fix layout for auto-hiding scrollbar (e.g. GTK)

If no modifier key is used the zoombar acts as a scroll bar. If ctrl is
used it modifies the zoom level, shift is a speed modifier

.launch/Build and deploy SCViewer.launch

@@ -12,7 +12,8 @@
     <booleanAttribute key="M2_UPDATE_SNAPSHOTS" value="false"/>
     <stringAttribute key="M2_USER_SETTINGS" value=""/>
     <booleanAttribute key="M2_WORKSPACE_RESOLUTION" value="true"/>
+    <booleanAttribute key="org.eclipse.jdt.launching.ATTR_ATTR_USE_ARGFILE" value="false"/>
+    <booleanAttribute key="org.eclipse.jdt.launching.ATTR_USE_CLASSPATH_ONLY_JAR" value="false"/>
     <booleanAttribute key="org.eclipse.jdt.launching.ATTR_USE_START_ON_FIRST_THREAD" value="true"/>
-    <stringAttribute key="org.eclipse.jdt.launching.JRE_CONTAINER" value="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.launching.macosx.MacOSXType/AdoptOpenJDK 8 [1.8.0_232]"/>
     <stringAttribute key="org.eclipse.jdt.launching.WORKING_DIRECTORY" value="${project_loc:com.minres.scviewer.parent}"/>
 </launchConfiguration>

README.md

@@ -18,14 +18,55 @@ The viewer has the following features
  - sqlite based 
  - visualization of transaction relations
 
-To build the plugins the Eclipse SDK or PDE can be used. In both cases the Groovy
+To build the plugins the Eclipse SDK or PDE can be used.
-eclipse plugin (http://groovy.codehaus.org/Eclipse+Plugin or Market) has to be
+
-installed.
+Key Shortcuts
+=============
+
+Legend:
+
+* Left Mouse Button: LMB
+* Middle Mouse Button: MMB
+* Mouse Scroll wheel: MScrl
+* Context any means Name List, Value List or Waveform
+
+| Input      | Modifier | Context  | Action                            |
+|------------|----------|----------|-----------------------------------|
+| LMB click  |          | any      | select                            |
+| LMB click  | Shift    | Waveform | move selected marker to position  |
+| LMB click  | Control  | Waveform | move cursor to position           |
+| LMB drag   |          | Waveform | zoom to range                     |
+| MMB click  |          | Waveform | move selected marker to position  |
+| MScrl      |          | any      | scroll window up/down             |
+| MScrl      | Shift    | any      | scroll window left/right          |
+| MScrl      | Control  | Waveform | zoom in/out                       |
+| Key left   |          | Waveform | scroll window to the left (slow)  |
+| Key right  |          | Waveform | scroll window to the right (slow) |
+| Key left   | Shift    | Waveform | scroll window to the left (fast)  |
+| Key right  | Shift    | Waveform | scroll window to the right (fast) |
+| Key up     |          | Waveform | move selection up                 |
+| Key down   |          | Waveform | move selection down               |
+| Key up     | Control  | Waveform | move selected track up            |
+| Key down   | Control  | Waveform | move selected track down          |
+| Key +      | Control  | Waveform | zoom in                           |
+| Key -      | Control  | Waveform | zoom out                          |
+| Key Pos1   |          | Waveform | jump to selected marker           |
+| Key End    |          | Waveform | jump to cursor                    |
+| Key Del    |          | any      | delete selected entries           |
+| LMB click  |          | ZoomBar  | increment/decrement 1 page        |
+| LMB drag   |          | ZoomBar  | drag both markers (pan)           |
+| LMB drag   | Control  | ZoomBar  | drag one marker (zoom)            |
+| MMB drag   |          | ZoomBar  | drag one marker (zoom)            |
+| xMB dclick |          | ZoomBar  | pan to position                   |
+| MScrl      |          | ZoomBar  | scroll window left/right          |
+| MScrl      | Shift    | ZoomBar  | scroll window left/right double speed |
+| MScrl      | Control  | ZoomBar  | zoom in/out                       |
+| Key left   |          | ZoomBar  | scroll window to the left (slow)  |
+| Key right  |          | ZoomBar  | scroll window to the right (slow) |
+| Key up     |          | ZoomBar  | scroll window to the left (slow)  |
+| Key down   |          | ZoomBar  | scroll window to the right (slow) |
+| Key PgUp   |          | ZoomBar  | scroll window to the left (fast)  |
+| Key PgDown |          | ZoomBar  | scroll window to the right (fast) |
+| Key Pos1   |          | ZoomBar  | scroll to begin                   |
+| Key End    |          | ZoomBar  | scroll to end                     |
 
-TODO
-====
-- add more tests
-- move to feature based product to allow automatic updates
-- improve graphics
-- catch-up e3 plugin to functionality of e4 product
-- add calculated traces

features/com.minres.scviewer.database.feature/feature.xml

@@ -27,12 +27,12 @@ http://www.eclipse.org/legal/epl-v10.html
    </url>
 
    <requires>
-      <import plugin="org.codehaus.groovy" version="2.5.8" match="greaterOrEqual"/>
       <import plugin="org.eclipse.osgi.services" version="3.4.0" match="greaterOrEqual"/>
       <import plugin="com.google.guava" version="15.0.0" match="greaterOrEqual"/>
       <import plugin="org.eclipse.osgi"/>
       <import plugin="com.minres.scviewer.database" version="1.0.0" match="greaterOrEqual"/>
       <import plugin="org.eclipse.core.runtime"/>
+      <import feature="org.eclipse.collections.feature" version="10.4.0.v20200820-2049"/>
    </requires>
 
    <plugin

features/com.minres.scviewer.database.feature/pom.xml

@@ -5,7 +5,7 @@
   <parent>
   	<groupId>com.minres.scviewer</groupId>
   	<artifactId>com.minres.scviewer.parent</artifactId>
-  	<version>2.12.2</version>
+  	<version>2.15.1</version>
 	<relativePath>../..</relativePath>
   </parent>
   <version>3.0.0-SNAPSHOT</version>

features/com.minres.scviewer.e4.feature/pom.xml

@@ -5,7 +5,7 @@
   <parent>
   	<groupId>com.minres.scviewer</groupId>
   	<artifactId>com.minres.scviewer.parent</artifactId>
-  	<version>2.12.2</version>
+  	<version>2.15.1</version>
 	<relativePath>../..</relativePath>
   </parent>
   <version>1.1.0-SNAPSHOT</version>

features/com.minres.scviewer.e4.platform.feature/feature.xml

@@ -29,6 +29,10 @@
          id="org.eclipse.emf.common"
          version="0.0.0"/>
 
+   <includes
+         id="org.eclipse.collections.feature"
+         version="0.0.0"/>
+
    <requires>
       <import plugin="org.eclipse.core.expressions" version="3.2.0" match="compatible"/>
       <import plugin="org.eclipse.core.filesystem" version="1.3.0" match="compatible"/>

features/com.minres.scviewer.e4.platform.feature/pom.xml

@@ -5,7 +5,7 @@
   <parent>
   	<groupId>com.minres.scviewer</groupId>
   	<artifactId>com.minres.scviewer.parent</artifactId>
-  	<version>2.12.2</version>
+  	<version>2.15.1</version>
 	<relativePath>../..</relativePath>
   </parent>
   <version>1.0.0-SNAPSHOT</version>

features/com.minres.scviewer.feature/pom.xml

@@ -5,7 +5,7 @@
   <parent>
   	<groupId>com.minres.scviewer</groupId>
   	<artifactId>com.minres.scviewer.parent</artifactId>
-  	<version>2.12.2</version>
+  	<version>2.15.1</version>
 	<relativePath>../..</relativePath>
   </parent>
   <version>1.1.0-SNAPSHOT</version>

features/com.minres.scviewer.ui.feature/pom.xml

@@ -5,7 +5,7 @@
   <parent>
   	<groupId>com.minres.scviewer</groupId>
   	<artifactId>com.minres.scviewer.parent</artifactId>
-  	<version>2.12.2</version>
+  	<version>2.15.1</version>
 	<relativePath>../..</relativePath>
   </parent>
   <version>1.1.0-SNAPSHOT</version>

plugins/com.minres.scviewer.database.sqlite/pom.xml

@@ -4,7 +4,7 @@
   <parent>
   	<groupId>com.minres.scviewer</groupId>
   	<artifactId>com.minres.scviewer.parent</artifactId>
-  	<version>2.12.2</version>
+  	<version>2.15.1</version>
 	<relativePath>../..</relativePath>
   </parent>
   <packaging>eclipse-plugin</packaging>

plugins/com.minres.scviewer.database.sqlite/src/com/minres/scviewer/database/sqlite/AbstractTxStream.java

@@ -14,12 +14,13 @@ import java.sql.SQLException;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
-import java.util.NavigableMap;
-import java.util.TreeMap;
 
+import com.minres.scviewer.database.EventEntry;
 import com.minres.scviewer.database.EventKind;
 import com.minres.scviewer.database.HierNode;
 import com.minres.scviewer.database.IEvent;
+import com.minres.scviewer.database.IEventList;
+import com.minres.scviewer.database.EventList;
 import com.minres.scviewer.database.IWaveform;
 import com.minres.scviewer.database.RelationType;
 import com.minres.scviewer.database.RelationTypeFactory;
@@ -35,7 +36,7 @@ abstract class AbstractTxStream extends HierNode implements IWaveform {
 	
 	private Integer maxConcurrency;
 
-	private TreeMap<Long, IEvent[]> events;
+	private IEventList events;
 
 	private List<RelationType> usedRelationsList;
 
@@ -71,9 +72,9 @@ abstract class AbstractTxStream extends HierNode implements IWaveform {
 	}
 
 	@Override
-	public  NavigableMap<Long, IEvent[]> getEvents(){
+	public  IEventList getEvents(){
 		if(events==null){
-			events=new TreeMap<>();
+			events=new EventList();
 			for(Entry<Integer, ITx> entry:getTransactions().entrySet()){
 				putEvent(new TxEvent(EventKind.BEGIN, entry.getValue()));
 				putEvent(new TxEvent(EventKind.END, entry.getValue()));
@@ -83,22 +84,13 @@ abstract class AbstractTxStream extends HierNode implements IWaveform {
 	}
 
 	private void putEvent(TxEvent ev){
-		Long time = ev.getTime();
+		events.put(ev.getTime(), ev);
-		if(events.containsKey(time)) {
-			IEvent[] oldV = events.get(time);
-			IEvent[] newV = new IEvent[oldV.length+1];
-			System.arraycopy(oldV, 0, newV, 0, oldV.length);
-			newV[oldV.length]=ev;
-			events.put(time, newV);
-		} else {
-			events.put(time, new IEvent[] {ev});
-		}
 	}
 
 	protected abstract Map<Integer, ITx> getTransactions();
 
 	@Override
-	public IEvent[] getEventsAtTime(Long time) {
+	public IEvent[] getEventsAtTime(long time) {
 		return getEvents().get(time);
 	}
 
@@ -113,12 +105,12 @@ abstract class AbstractTxStream extends HierNode implements IWaveform {
 	}
 
 	@Override
-	public IEvent[] getEventsBeforeTime(Long time) {
+	public IEvent[] getEventsBeforeTime(long time) {
-		Entry<Long, IEvent[]> e = events.floorEntry(time);
+		EventEntry e = events.floorEntry(time);
 		if(e==null)
 			return new IEvent[]{};
 		else
-			return  events.floorEntry(time).getValue();
+			return  events.floorEntry(time).events;
 	}
 
 	@Override

plugins/com.minres.scviewer.database.sqlite/src/com/minres/scviewer/database/sqlite/SQLiteDbLoader.java

@@ -48,7 +48,7 @@ public class SQLiteDbLoader implements IWaveformDbLoader {
 	protected PropertyChangeSupport pcs = new PropertyChangeSupport(this);
 
 	@Override
-	public Long getMaxTime() {
+	public long getMaxTime() {
 		SQLiteDatabaseSelectHandler<ScvTxEvent> handler = new SQLiteDatabaseSelectHandler<>(ScvTxEvent.class,
 				database, "time = (SELECT MAX(time) FROM ScvTxEvent)");
 		try {

plugins/com.minres.scviewer.database.sqlite/src/com/minres/scviewer/database/sqlite/Tx.java

@@ -37,8 +37,8 @@ public class Tx implements ITx {
 	private TxGenerator trGenerator;
 	private ScvTx scvTx;
 	private List<ITxAttribute> attributes;
-	private Long begin;
+	private long begin=-1;
-	private Long end;
+	private long end=-1;
 	private List<ITxRelation> incoming;
 	private List<ITxRelation> outgoing;
 	
@@ -50,7 +50,7 @@ public class Tx implements ITx {
 	}
 
 	@Override
-	public Long getId() {
+	public long getId() {
 		return (long) scvTx.getId();
 	}
 
@@ -69,8 +69,8 @@ public class Tx implements ITx {
 	}
 
 	@Override
-	public Long getBeginTime() {
+	public long getBeginTime() {
-		if(begin==null){
+		if(begin<0){
 		SQLiteDatabaseSelectHandler<ScvTxEvent> handler = new SQLiteDatabaseSelectHandler<>(ScvTxEvent.class,
 				database, "tx="+scvTx.getId()+" AND type="+ AssociationType.BEGIN.ordinal());
 		try {
@@ -85,8 +85,8 @@ public class Tx implements ITx {
 	}
 
 	@Override
-	public Long getEndTime() {
+	public long getEndTime() {
-		if(end==null){
+		if(end<0){
 		SQLiteDatabaseSelectHandler<ScvTxEvent> handler = new SQLiteDatabaseSelectHandler<>(ScvTxEvent.class,
 				database, "tx="+scvTx.getId()+" AND type="+ AssociationType.END.ordinal());
 		try {
@@ -178,11 +178,11 @@ public class Tx implements ITx {
 
 	@Override
 	public int compareTo(ITx o) {
-		int res = this.getBeginTime().compareTo(o.getBeginTime());
+		int res = Long.compare(this.getBeginTime(), o.getBeginTime());
 		if(res!=0)	
 			return res;
 		else
-			return this.getId().compareTo(o.getId());
+			return Long.compare(this.getId(), o.getId());
 	}
 
 	@Override

plugins/com.minres.scviewer.database.sqlite/src/com/minres/scviewer/database/sqlite/TxEvent.java

@@ -28,7 +28,7 @@ public class TxEvent implements ITxEvent {
 	}
 
 	@Override
-	public Long getTime() {
+	public long getTime() {
 		return type==EventKind.BEGIN?tx.getBeginTime():tx.getEndTime();
 	}
 

plugins/com.minres.scviewer.database.sqlite/src/com/minres/scviewer/database/sqlite/TxGenerator.java

@@ -39,7 +39,7 @@ public class TxGenerator extends AbstractTxStream {
 	}
 
 	@Override
-	public Long getId() {
+	public long getId() {
 		return (long) scvGenerator.getId();
 	}
 
@@ -50,7 +50,7 @@ public class TxGenerator extends AbstractTxStream {
 
 	@Override
 	public boolean isSame(IWaveform other) {
-		return(other instanceof TxGenerator && this.getId().equals(other.getId()));
+		return(other instanceof TxGenerator && this.getId() == other.getId());
 	}
 
 	@Override

plugins/com.minres.scviewer.database.sqlite/src/com/minres/scviewer/database/sqlite/TxStream.java

@@ -49,7 +49,7 @@ public class TxStream extends AbstractTxStream {
 	}
 
 	@Override
-	public Long getId() {
+	public long getId() {
 		return (long) scvStream.getId();
 	}
 
@@ -89,13 +89,13 @@ public class TxStream extends AbstractTxStream {
 	}
 
 	@Override
-	public IEvent[] getEventsAtTime(Long time) {
+	public IEvent[] getEventsAtTime(long time) {
 		return getEvents().get(time);
 	}
 
 	@Override
 	public boolean isSame(IWaveform other) {
-		return(other instanceof TxStream && this.getId().equals(other.getId()));
+		return(other instanceof TxStream && this.getId() == other.getId());
 	}
 
 	@Override

plugins/com.minres.scviewer.database.text/.classpath

@@ -2,12 +2,12 @@
 <classpath>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11"/>
 	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
+	<classpathentry kind="src" path="src/"/>
 	<classpathentry exported="true" kind="lib" path="lib/mapdb-3.0.7.jar" sourcepath="lib/mapdb-3.0.7-sources.jar">
 		<attributes>
 			<attribute name="javadoc_location" value="jar:platform:/resource/com.minres.scviewer.database.text/lib/mapdb-3.0.7-javadoc.jar!/"/>
 		</attributes>
 	</classpathentry>
-	<classpathentry kind="src" path="src"/>
 	<classpathentry exported="true" kind="lib" path="lib/kotlin-stdlib-1.2.42.jar"/>
 	<classpathentry exported="true" kind="lib" path="lib/lz4-1.3.0.jar"/>
 	<classpathentry exported="true" kind="lib" path="lib/elsa-3.0.0-M5.jar"/>

plugins/com.minres.scviewer.database.text/META-INF/MANIFEST.MF

@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: Textual transaction database
 Bundle-SymbolicName: com.minres.scviewer.database.text
-Bundle-Version: 3.0.0.qualifier
+Bundle-Version: 4.0.1.qualifier
 Bundle-Vendor: MINRES Technologies GmbH
 Bundle-RequiredExecutionEnvironment: JavaSE-11
 Import-Package: org.osgi.framework;version="1.3.0"

plugins/com.minres.scviewer.database.text/OSGI-INF/component.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<scr:component xmlns:scr="http://www.osgi.org/xmlns/scr/v1.1.0" name="TextDbLoader">
+<scr:component xmlns:scr="http://www.osgi.org/xmlns/scr/v1.1.0" name="TextDbLoaderFactory">
-   <implementation class="com.minres.scviewer.database.text.TextDbLoader"/>
+   <implementation class="com.minres.scviewer.database.text.TextDbLoaderFactory"/>
    <service>
-      <provide interface="com.minres.scviewer.database.IWaveformDbLoader"/>
+      <provide interface="com.minres.scviewer.database.IWaveformDbLoaderFactory"/>
    </service>
 </scr:component>

plugins/com.minres.scviewer.database.text/pom.xml

@@ -2,11 +2,11 @@
 	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>com.minres.scviewer.database.text</artifactId>
-	<version>3.0.0-SNAPSHOT</version>
+	<version>4.0.1-SNAPSHOT</version>
 	<parent>
 		<groupId>com.minres.scviewer</groupId>
 		<artifactId>com.minres.scviewer.parent</artifactId>
-		<version>2.12.2</version>
+		<version>2.15.1</version>
 		<relativePath>../..</relativePath>
 	</parent>
 	<packaging>eclipse-plugin</packaging>

plugins/com.minres.scviewer.database.text/src/com/minres/scviewer/database/text/AbstractTxStream.java

@@ -12,14 +12,13 @@
 package com.minres.scviewer.database.text;
 
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.HashMap;
-import java.util.Map.Entry;
-import java.util.NavigableMap;
-import java.util.TreeMap;
 
+import com.minres.scviewer.database.EventEntry;
+import com.minres.scviewer.database.EventList;
 import com.minres.scviewer.database.HierNode;
 import com.minres.scviewer.database.IEvent;
+import com.minres.scviewer.database.IEventList;
 import com.minres.scviewer.database.IWaveform;
 import com.minres.scviewer.database.WaveformType;
 import com.minres.scviewer.database.tx.ITx;
@@ -39,7 +38,7 @@ abstract class AbstractTxStream extends HierNode implements IWaveform {
 	protected TextDbLoader loader;
 
 	/** The events. */
-	TreeMap<Long, IEvent[]> events = new TreeMap<>();
+	IEventList events = new EventList();
 
 	/** The max concurrency. */
 	private int rowCount = -1;
@@ -73,14 +72,7 @@ abstract class AbstractTxStream extends HierNode implements IWaveform {
 	 * @param evt the evt
 	 */
 	public void addEvent(ITxEvent evt) {
-		if (!events.containsKey(evt.getTime()))
+		events.put(evt.getTime(), evt);
-			events.put(evt.getTime(), new IEvent[] { evt });
-		else {
-			IEvent[] evts = events.get(evt.getTime());
-			IEvent[] newEvts = Arrays.copyOf(evts, evts.length + 1);
-			newEvts[evts.length] = evt;
-			events.put(evt.getTime(), newEvts);
-		}
 	}
 
 	/**
@@ -89,7 +81,7 @@ abstract class AbstractTxStream extends HierNode implements IWaveform {
 	 * @return the events
 	 */
 	@Override
-	public NavigableMap<Long, IEvent[]> getEvents() {
+	public IEventList getEvents() {
 		return events;
 	}
 
@@ -100,7 +92,7 @@ abstract class AbstractTxStream extends HierNode implements IWaveform {
 	 * @return the events at time
 	 */
 	@Override
-	public IEvent[] getEventsAtTime(Long time) {
+	public IEvent[] getEventsAtTime(long time) {
 		return events.get(time);
 	}
 
@@ -111,12 +103,12 @@ abstract class AbstractTxStream extends HierNode implements IWaveform {
 	 * @return the events before time
 	 */
 	@Override
-	public IEvent[] getEventsBeforeTime(Long time) {
+	public IEvent[] getEventsBeforeTime(long time) {
-		Entry<Long, IEvent[]> e = events.floorEntry(time);
+		EventEntry e = events.floorEntry(time);
 		if (e == null)
 			return new IEvent[] {};
 		else
-			return events.floorEntry(time).getValue();
+			return events.floorEntry(time).events;
 	}
 
 	/**
@@ -135,7 +127,7 @@ abstract class AbstractTxStream extends HierNode implements IWaveform {
 	 * @return the id
 	 */
 	@Override
-	public Long getId() {
+	public long getId() {
 		return id;
 	}
 
@@ -159,8 +151,8 @@ abstract class AbstractTxStream extends HierNode implements IWaveform {
 			return;
 		ArrayList<Long> rowEndTime = new ArrayList<>();
 		HashMap<Long, Integer> rowByTxId = new HashMap<>();
-		for(Entry<Long, IEvent[]> entry: events.entrySet()) {
+		for(EventEntry entry: events) {
-			for(IEvent evt:entry.getValue()) {
+			for(IEvent evt:entry.events) {
 				TxEvent txEvt = (TxEvent) evt;
 				ITx tx = txEvt.getTransaction();
 				int rowIdx = 0;

plugins/com.minres.scviewer.database.text/src/com/minres/scviewer/database/text/TextDbLoader.java

@@ -131,7 +131,7 @@ public class TextDbLoader implements IWaveformDbLoader {
 	 * @return the max time
 	 */
 	@Override
-	public Long getMaxTime() {
+	public long getMaxTime() {
 		return maxTime;
 	}
 
@@ -167,7 +167,9 @@ public class TextDbLoader implements IWaveformDbLoader {
 	 */
 	@Override
 	public Collection<IWaveform> getAllWaves() {
-		return new ArrayList<>(txStreams.values());
+		ArrayList<IWaveform> ret =  new ArrayList<>(txStreams.values());
+		ret.addAll(txGenerators.values());
+		return ret;
 	}
 
 	/**
@@ -343,10 +345,10 @@ public class TextDbLoader implements IWaveformDbLoader {
 			String curLine = reader.readLine();
 			String nextLine = null;
 			while ((nextLine = reader.readLine()) != null && curLine != null) {
-				curLine = parseLine(curLine, nextLine);
+				curLine = parseLine(curLine, nextLine, false);
 			}
 			if (curLine != null)
-				parseLine(curLine, nextLine);
+				parseLine(curLine, nextLine, true);
 			for(Entry<Long, ScvTx> e: transactionById.entrySet()) {
 				ScvTx scvTx = e.getValue();
 				scvTx.endTime=loader.maxTime;
@@ -383,16 +385,16 @@ public class TextDbLoader implements IWaveformDbLoader {
 		 * @throws IOException Signals that an I/O exception has occurred.
 		 * @throws InputFormatException Signals that the input format is wrong
 		 */
-		private String parseLine(String curLine, String nextLine) throws IOException, InputFormatException {
+		private String parseLine(String curLine, String nextLine, boolean last) throws IOException, InputFormatException {
 			String[] tokens = curLine.split("\\s+");
-			if ("tx_record_attribute".equals(tokens[0])) {
+			if ("tx_record_attribute".equals(tokens[0]) && tokens.length>4) {
 				Long id = Long.parseLong(tokens[1]);
 				String name = tokens[2].substring(1, tokens[2].length()-1);
 				DataType type = DataType.valueOf(tokens[3]);
 				String remaining = tokens.length > 5 ? String.join(" ", Arrays.copyOfRange(tokens, 5, tokens.length)) : "";
 				TxAttributeType attrType = getAttrType(name, type, AssociationType.RECORD);
 				transactionById.get(id).attributes.add(new TxAttribute(attrType, getAttrString(attrType, remaining)));
-			} else if ("tx_begin".equals(tokens[0])) {
+			} else if ("tx_begin".equals(tokens[0]) && tokens.length>4) {
 				Long id = Long.parseLong(tokens[1]);
 				Long genId = Long.parseLong(tokens[2]);
 				TxGenerator gen = loader.txGenerators.get(genId);
@@ -411,7 +413,7 @@ public class TextDbLoader implements IWaveformDbLoader {
 					}
 				}
 				transactionById.put(id, scvTx);
-			} else if ("tx_end".equals(tokens[0])) {
+			} else if ("tx_end".equals(tokens[0]) && tokens.length>4) {
 				Long id = Long.parseLong(tokens[1]);
 				ScvTx scvTx = transactionById.get(id);
 				assert Long.parseLong(tokens[2]) == scvTx.generatorId;
@@ -441,7 +443,7 @@ public class TextDbLoader implements IWaveformDbLoader {
 				}
 				txSink.put(scvTx.getId(), scvTx);
 				transactionById.remove(id);
-			} else if ("tx_relation".equals(tokens[0])) {
+			} else if ("tx_relation".equals(tokens[0]) && tokens.length>3) {
 				Long tr2 = Long.parseLong(tokens[2]);
 				Long tr1 = Long.parseLong(tokens[3]);
 				String relType = tokens[1].substring(1, tokens[1].length() - 1);
@@ -481,7 +483,7 @@ public class TextDbLoader implements IWaveformDbLoader {
 				}
 			} else if (")".equals(tokens[0])) {
 				generator = null;
-			} else
+			} else if(!last)			
 				throw new InputFormatException("Don't know what to do with: '" + curLine + "'");
 			return nextLine;
 		}

plugins/com.minres.scviewer.database.text/src/com/minres/scviewer/database/text/TextDbLoaderFactory.java

@@ -0,0 +1,77 @@
+/*******************************************************************************
+ * Copyright (c) 2012 IT Just working.
+ * Copyright (c) 2020 MINRES Technologies GmbH
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IT Just working - initial API and implementation
+ *******************************************************************************/
+package com.minres.scviewer.database.text;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.zip.GZIPInputStream;
+
+import com.minres.scviewer.database.IWaveformDbLoader;
+import com.minres.scviewer.database.IWaveformDbLoaderFactory;
+
+/**
+ * The Class TextDbLoader.
+ */
+public class TextDbLoaderFactory implements IWaveformDbLoaderFactory {
+
+	/** The Constant x. */
+	static final byte[] x = "scv_tr_stream".getBytes();
+
+	/**
+	 * Checks if f is gzipped.
+	 *
+	 * @param f the f
+	 * @return true, if is gzipped
+	 */
+	private static boolean isGzipped(File f) {
+		try (InputStream is = new FileInputStream(f)) {
+			byte[] signature = new byte[2];
+			int nread = is.read(signature); // read the gzip signature
+			return nread == 2 && signature[0] == (byte) 0x1f && signature[1] == (byte) 0x8b;
+		} catch (IOException e) {
+			return false;
+		}
+	}
+
+	/**
+	 * Can load.
+	 *
+	 * @param inputFile the input file
+	 * @return true, if successful
+	 */
+	@Override
+	public boolean canLoad(File inputFile) {
+		if (!inputFile.isDirectory() && inputFile.exists()) {
+			boolean gzipped = isGzipped(inputFile);
+			try(InputStream stream = gzipped ? new GZIPInputStream(new FileInputStream(inputFile)) : new FileInputStream(inputFile)){
+				byte[] buffer = new byte[x.length];
+				int readCnt = stream.read(buffer, 0, x.length);
+				if (readCnt == x.length) {
+					for (int i = 0; i < x.length; i++)
+						if (buffer[i] != x[i])
+							return false;
+				}
+				return true;
+			} catch (Exception e) {
+				return false;
+			}
+		}
+		return false;
+	}
+
+	@Override
+	public IWaveformDbLoader getLoader() {
+		return new TextDbLoader();
+	}
+}

plugins/com.minres.scviewer.database.text/src/com/minres/scviewer/database/text/Tx.java

@@ -102,11 +102,11 @@ class Tx implements ITx {
 	 */
 	@Override
 	public int compareTo(ITx o) {
-		int res = getBeginTime().compareTo(o.getBeginTime());
+		int res = Long.compare(getBeginTime(), o.getBeginTime());
 		if (res != 0)
 			return res;
 		else
-			return getId().compareTo(o.getId());
+			return Long.compare(getId(), o.getId());
 	}
 
 	/**
@@ -150,7 +150,7 @@ class Tx implements ITx {
 	 * @return the id
 	 */
 	@Override
-	public Long getId() {
+	public long getId() {
 		return getScvTx().id;
 	}
 
@@ -180,7 +180,7 @@ class Tx implements ITx {
 	 * @return the begin time
 	 */
 	@Override
-	public Long getBeginTime() {
+	public long getBeginTime() {
 		if (beginTime < 0) {
 			ScvTx tx = scvTx==null?loader.getScvTx(id):getScvTx();
 			beginTime = tx.beginTime;
@@ -195,7 +195,7 @@ class Tx implements ITx {
 	 * @return the end time
 	 */
 	@Override
-	public Long getEndTime() {
+	public long getEndTime() {
 		if (endTime < 0) {
 			ScvTx tx = scvTx==null?loader.getScvTx(id):getScvTx();
 			beginTime = tx.beginTime;

plugins/com.minres.scviewer.database.text/src/com/minres/scviewer/database/text/TxEvent.java

@@ -95,7 +95,7 @@ class TxEvent implements ITxEvent {
 	 * @return the time
 	 */
 	@Override
-	public Long getTime() {
+	public long getTime() {
 		return time;
 	}
 

plugins/com.minres.scviewer.database.text/src/com/minres/scviewer/database/text/TxGenerator.java

@@ -52,7 +52,7 @@ class TxGenerator extends AbstractTxStream {
 	 */
 	@Override
 	public boolean isSame(IWaveform other) {
-		return (other instanceof TxGenerator && this.getId().equals(other.getId()));
+		return (other instanceof TxGenerator && this.getId()==other.getId());
 	}
 
 	/**
@@ -83,4 +83,14 @@ class TxGenerator extends AbstractTxStream {
 		return stream.getKind();
 	}
 	
+	/**
+	 * Gets the full hierarchical name.
+	 *
+	 * @return the full name
+	 */
+	@Override
+	public String getFullName() {
+		return  ((AbstractTxStream)parent).getFullName()+"."+name;
+	}
+
 }

plugins/com.minres.scviewer.database.text/src/com/minres/scviewer/database/text/TxStream.java

@@ -42,7 +42,7 @@ class TxStream extends AbstractTxStream {
 	 */
 	@Override
 	public boolean isSame(IWaveform other) {
-		return (other instanceof TxStream && this.getId().equals(other.getId()));
+		return (other instanceof TxStream && this.getId() == other.getId());
 	}
 
 	/**

plugins/com.minres.scviewer.database.ui.swt/META-INF/MANIFEST.MF

@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: SWT database widget
 Bundle-SymbolicName: com.minres.scviewer.database.ui.swt
-Bundle-Version: 3.0.0.qualifier
+Bundle-Version: 4.0.0.qualifier
 Bundle-Vendor: MINRES Technologies GmbH
 Bundle-RequiredExecutionEnvironment: JavaSE-11
 Require-Bundle: org.eclipse.swt;bundle-version="3.103.1",

plugins/com.minres.scviewer.database.ui.swt/pom.xml

@@ -5,8 +5,8 @@
   <parent>
   	<groupId>com.minres.scviewer</groupId>
   	<artifactId>com.minres.scviewer.parent</artifactId>
-  	<version>2.12.2</version>
+  	<version>2.15.1</version>
 	<relativePath>../..</relativePath>
   </parent>
-  <version>3.0.0-SNAPSHOT</version>
+  <version>4.0.0-SNAPSHOT</version>
 </project>

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/IWaveformView.java

@@ -27,9 +27,13 @@ import com.minres.scviewer.database.tx.ITx;
 
 public interface IWaveformView extends PropertyChangeListener, ISelectionProvider{
 
-	String CURSOR_PROPERTY = "cursor_time";
+	static final String CURSOR_PROPERTY = "cursor_time";
 	
-	String MARKER_PROPERTY = "marker_time";
+	static final String MARKER_PROPERTY = "marker_time";
+	
+	static final int CURSOR_POS = 0;
+	
+	static final int MARKER_POS = 1;
 
 	public static final RelationType NEXT_PREV_IN_STREAM = RelationTypeFactory.create("Prev/Next in stream"); 
 
@@ -75,23 +79,17 @@ public interface IWaveformView extends PropertyChangeListener, ISelectionProvide
 	
     public void setHighliteRelation(RelationType relationType);
 
-	public long getMaxTime();
-
 	public void setMaxTime(long maxTime);
 
-	public void setZoomLevel(int scale);
-
-	public int getZoomLevel();
-
 	public void setCursorTime(long time);
 
-	public void setMarkerTime(long time, int index);
+	public void setMarkerTime(int marker, long time);
 
 	public long getCursorTime();
 
-	public int getSelectedMarkerId();
+	public int getSelectedMarker();
 
-	public long getMarkerTime(int index);
+	public long getMarkerTime(int marker);
 
 	public void addPropertyChangeListener(PropertyChangeListener listener);
 
@@ -101,21 +99,18 @@ public interface IWaveformView extends PropertyChangeListener, ISelectionProvide
 
 	public void removePropertyChangeListener(String propertyName, PropertyChangeListener listener);
 
-	public String getScaledTime(long time);
-
-	public String[] getZoomLevels();
-
 	public List<ICursor> getCursorList();
 
-	public long getBaselineTime();
-
-	public void setBaselineTime(Long scale);
-	
 	public void scrollHorizontal(int percent);
 	
+	public void scrollTo(int pos);
+	
 	public void addDisposeListener( DisposeListener listener );
 
 	public void deleteSelectedTracks();
 
 	public TrackEntry addWaveform(IWaveform waveform, int pos);
+
+	public IWaveformZoom getWaveformZoom();
+	
 }

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/IWaveformZoom.java

@@ -0,0 +1,24 @@
+package com.minres.scviewer.database.ui;
+
+public interface IWaveformZoom {
+	
+	long getMaxVisibleTime();
+
+	long getMinVisibleTime();
+
+	void setMinVisibleTime(long scale);
+
+	long getMaxTime();
+
+	long getScale();
+
+	void setScale(long factor);
+
+	void setVisibleRange(long startTime, long endTime);
+	
+	void centerAt(long time);
+	
+	void zoom(ZoomKind kind);
+
+	String timeToString(long time);
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/ZoomKind.java

@@ -0,0 +1,3 @@
+package com.minres.scviewer.database.ui;
+
+public enum ZoomKind {IN, OUT, FIT, FULL}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/Constants.java

@@ -1,14 +1,49 @@
 package com.minres.scviewer.database.ui.swt;
 
+import java.text.DecimalFormat;
+
 public class Constants {
 
-	public static final String[] UNIT_STRING={"fs", "ps", "ns", "us", "ms"};//, "s"};
+	public static final String[] UNIT_STRING={"fs", "ps", "ns", "us", "ms", "s"};
+	public static final long[]   UNIT_MULTIPLIER={1l, 1000l, 1000l*1000, 1000l*1000*1000, 1000l*1000*1000*1000, 1000l*1000*1000*1000*1000 };
 
-    public static final int[] UNIT_MULTIPLIER={1, 3, 10, 30, 100, 300};
+    //public static final int[] UNIT_MULTIPLIER={1, 3, 10, 30, 100, 300};
+    public static final long[] SCALE_MULTIPLIER={1, 2, 5, 10, 20, 50, 100, 200, 500};
 
 	public static final String CONTENT_PROVIDER_TAG = "TOOLTIP_CONTENT_PROVIDER";
 	public static final String HELP_PROVIDER_TAG = "TOOLTIP_HELP_PROVIDER";
 	
+	public static final DecimalFormat TIME_FORMAT_FS  = new DecimalFormat("#"); 
+	public static final DecimalFormat TIME_FORMAT_PS  = new DecimalFormat("#"); 
+	public static final DecimalFormat TIME_FORMAT_NS  = new DecimalFormat("#.0##"); 
+	public static final DecimalFormat TIME_FORMAT_UMS = new DecimalFormat("#.0#####"); 
+	public static final long[] POWERS_OF_TEN = {
+			1L,
+			10L,
+			100L,
+			1_000L,
+			10_000L,
+			100_000L,
+			1_000_000L,
+			10_000_000L,
+			100_000_000L,
+			1_000_000_000L,
+			10_000_000_000L,
+			100_000_000_000L,
+			1_000_000_000_000L,
+			10_000_000_000_000L,
+			100_000_000_000_000L,
+			1_000_000_000_000_000L};
+
+	public static  DecimalFormat getTimeFormatForLevel(int idx) {
+		switch(idx) {
+		case 0:	return TIME_FORMAT_FS;
+		case 1:	return TIME_FORMAT_PS;
+		case 2:	return TIME_FORMAT_NS;
+		default:
+			return TIME_FORMAT_UMS;
+		}
+	}
 	private Constants() {}
 
 }

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/DatabaseUiPlugin.java

@@ -13,6 +13,7 @@ package com.minres.scviewer.database.ui.swt;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.Plugin;
 import org.eclipse.core.runtime.Status;
+import org.eclipse.wb.swt.SWTResourceManager;
 import org.osgi.framework.BundleContext;
 
 public class DatabaseUiPlugin extends Plugin {
@@ -24,6 +25,7 @@ public class DatabaseUiPlugin extends Plugin {
 
 	@Override
 	public void stop(BundleContext context) throws Exception {
+		SWTResourceManager.dispose();
 		getLog().log(new Status(IStatus.OK, "org.eclipse.e4.core", "Stopping org.eclipse.e4.core bundle..."));
 	}
 }

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/ArrowPainter.java

@@ -24,7 +24,6 @@ import org.eclipse.swt.graphics.Rectangle;
 import org.eclipse.swt.widgets.Display;
 
 import com.minres.scviewer.database.IEvent;
-import com.minres.scviewer.database.IHierNode;
 import com.minres.scviewer.database.IWaveform;
 import com.minres.scviewer.database.RelationType;
 import com.minres.scviewer.database.tx.ITx;
@@ -76,14 +75,14 @@ public class ArrowPainter implements IPainter {
 		this.tx = newTx;
 		iRect = new LinkedList<>();
 		oRect = new LinkedList<>();
-		scaleFactor = waveCanvas.getScaleFactor();
+		scaleFactor = waveCanvas.getScale();
 		if (tx != null) {
 			calculateGeometries();
 		}
 	}
 
 	private int getConcurrencyIndex(ITx tx) {
-		IEvent[] eventList = tx.getStream().getEvents().floorEntry(tx.getBeginTime()).getValue();
+		IEvent[] eventList = tx.getStream().getEventsBeforeTime(tx.getBeginTime());
 		Optional<Integer> res = Arrays.stream(eventList).map(e -> ((ITxEvent)e).getRowIndex()).findFirst();
 		return res.isPresent()? res.get():0;
 	}
@@ -110,46 +109,21 @@ public class ArrowPainter implements IPainter {
 	protected void deriveGeom(Collection<ITxRelation> relations, List<LinkEntry> res, boolean useTarget) {
 		for (ITxRelation iTxRelation : relations) {
 			ITx otherTx = useTarget ? iTxRelation.getTarget() : iTxRelation.getSource();
-			Rectangle bb = createLinkEntry(otherTx, otherTx.getStream());
+			for(IWaveform iWaveform: new IWaveform[]{otherTx.getStream(), otherTx.getGenerator()}) {
-			if(bb!=null){
-				res.add(new LinkEntry(bb, iTxRelation.getRelationType()));
-				return;
-			} else {
-				for(IHierNode gen:otherTx.getStream().getChildNodes()) {
-					if(gen instanceof IWaveform) {
-						bb = createLinkEntry(otherTx, (IWaveform) gen);
-						if(bb!=null){
-							res.add(new LinkEntry(bb, iTxRelation.getRelationType()));
-							return;
-						}
-					}
-				}
-			}
-		}
-	}
-
-	private Rectangle createLinkEntry(ITx otherTx, IWaveform iWaveform) {
 				if (waveCanvas.wave2painterMap.containsKey(iWaveform)) {
-			IWaveformPainter painter = waveCanvas.wave2painterMap.get(otherTx.getStream());
+					IWaveformPainter painter = waveCanvas.wave2painterMap.get(iWaveform);
-			if(painter==null) {
-				for(IHierNode gen:otherTx.getStream().getChildNodes()) {
-					if(gen instanceof IWaveform) {
-						 painter = waveCanvas.wave2painterMap.get(gen);
-						 if(painter!=null)
-							 break;
-					}
-				}
-			}
 					if(painter!=null) {
 						int height = waveCanvas.styleProvider.getTrackHeight();
-				return new Rectangle(
+						Rectangle bb = new Rectangle(
 								(int) (otherTx.getBeginTime() / scaleFactor),
 								waveCanvas.rulerHeight + painter.getVerticalOffset() + height * getConcurrencyIndex(otherTx),
 								(int) ((otherTx.getEndTime() - otherTx.getBeginTime()) / scaleFactor),
 								height);
+						res.add(new LinkEntry(bb, iTxRelation.getRelationType()));				
+					}
+				}
 			}
 		}
-		return null;
 	}
 
 	@Override
@@ -159,7 +133,7 @@ public class ArrowPainter implements IPainter {
 		Color highliteColor = waveCanvas.styleProvider.getColor(WaveformColors.REL_ARROW_HIGHLITE);
 
 		if(tx==null) return;
-		scaleFactor = waveCanvas.getScaleFactor();
+		scaleFactor = waveCanvas.getScale();
 		if(calculateGeometries())
 			return;
 		int correctionValue = (int)(selectionOffset);

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/CursorPainter.java

@@ -65,7 +65,7 @@ public class CursorPainter implements IPainter, ICursor {
 		Rectangle area = proj.unProject(clientRect);
 		if(!waveCanvas.painterList.isEmpty()){
 			
-			long scaleFactor=waveCanvas.getScaleFactor();
+			long scaleFactor=waveCanvas.getScale();
 			long beginPos = area.x;
 			
 			maxPosX = area.x + area.width;
@@ -83,8 +83,7 @@ public class CursorPainter implements IPainter, ICursor {
 				proj.drawLine(x, top, x, area.y+area.height);
 				proj.setBackground(drawColor);
 				proj.setForeground(textColor);
-				double dTime=time;
+				proj.drawText(waveCanvas.timeToString(time), x+1, top);
-				proj.drawText((dTime/waveCanvas.getScaleFactorPow10())+waveCanvas.getUnitStr(), x+1, top);
 			}
 		}
 	}	

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/RulerPainter.java

@@ -10,22 +10,21 @@
  *******************************************************************************/
 package com.minres.scviewer.database.ui.swt.internal;
 
-import java.text.DecimalFormat;
-
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.graphics.Color;
 import org.eclipse.swt.graphics.GC;
+import org.eclipse.swt.graphics.Point;
 import org.eclipse.swt.graphics.Rectangle;
 import org.eclipse.wb.swt.SWTResourceManager;
 
+import com.minres.scviewer.database.ui.swt.Constants;
+
 public class RulerPainter implements IPainter {
     protected final WaveformCanvas waveCanvas;
     
     static final int RULER_TICK_MINOR = 10;
     static final int RULER_TICK_MAJOR = 100;
        
-	static final DecimalFormat df = new DecimalFormat("#.00####"); 
-
     public RulerPainter(WaveformCanvas waveCanvas) {
         this.waveCanvas=waveCanvas;
     }
@@ -39,26 +38,26 @@ public class RulerPainter implements IPainter {
     	Color headerBgColor = waveCanvas.getDisplay().getSystemColor(SWT.COLOR_WIDGET_BACKGROUND);
     	if(headerBgColor.isDisposed())
     		headerBgColor=SWTResourceManager.getColor(255,255,255);
-        String unit=waveCanvas.getUnitStr();
-        int unitMultiplier=waveCanvas.getUnitMultiplier();
-        long scaleFactor=waveCanvas.getScaleFactor();
     	
-        long startPos=area.x*scaleFactor; 
+        long scaleFactor=waveCanvas.getScale();
-        long startVal=startPos - proj.getTranslation().x*scaleFactor;
+        long startTime=waveCanvas.getMinVisibleTime(); 
-        long endPos=startPos+area.width*scaleFactor;
+        long endTime=waveCanvas.getMaxVisibleTime();
-
-        long rulerTickMinor = RULER_TICK_MINOR*scaleFactor;
-        long rulerTickMajor = RULER_TICK_MAJOR*scaleFactor;
 
+        long multiplier = Constants.POWERS_OF_TEN[waveCanvas.getScaleMagnitude()];
+        long rulerTickMinor = RULER_TICK_MINOR*multiplier;
+        long rulerTickMajor = RULER_TICK_MAJOR*multiplier;
+        if((endTime-startTime)/rulerTickMinor>area.width/5) {
+        	rulerTickMinor*=10;
+        	rulerTickMajor*=10;
+        }
         int minorTickY = waveCanvas.rulerHeight-5;
         int majorTickY = waveCanvas.rulerHeight-15;
-        int textY=waveCanvas.rulerHeight-20;
+        int textY=waveCanvas.rulerHeight-30;
         int baselineY=waveCanvas.rulerHeight - 1;
         int bottom=waveCanvas.rulerHeight - 2;
 
-        long modulo = startVal % rulerTickMinor;
+        long startTickTime = startTime+rulerTickMinor-(startTime % rulerTickMinor);
-        long startMinorIncrPos = startPos+rulerTickMinor-modulo;
+        long majorTickDist = rulerTickMajor/scaleFactor;
-        long startMinorIncrVal = startVal+rulerTickMinor-modulo;
         
         gc.setBackground(waveCanvas.getDisplay().getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
         gc.fillRectangle(new Rectangle(area.x, area.y, area.width, waveCanvas.rulerHeight));
@@ -66,13 +65,22 @@ public class RulerPainter implements IPainter {
         gc.fillRectangle(new Rectangle(area.x, area.y, area.width, baselineY));
         gc.setForeground(headerFgColor);
         gc.drawLine(area.x, area.y+bottom, area.x+area.width, area.y+bottom);
-        
+        int maxTextLength=0;
-        for (long pos = startMinorIncrPos, tick = startMinorIncrVal; pos < endPos; pos+= rulerTickMinor, tick += rulerTickMinor) {
+        for (long tickTime = startTickTime; tickTime < endTime; tickTime+= rulerTickMinor) {
-            int x0Pos = (int) (pos/scaleFactor);
+            if ((tickTime % rulerTickMajor) == 0) {
-            long x0Val = tick/scaleFactor;
+            	Point textSize = gc.textExtent(waveCanvas.timeToString(tickTime));
-            if ((tick % rulerTickMajor) == 0) {
+            	maxTextLength=textSize.x>maxTextLength?textSize.x:maxTextLength;
-                gc.drawText(df.format(x0Val*unitMultiplier)+unit, x0Pos, area.y+textY);
+            }
+        }
+        boolean drawEvery = majorTickDist>maxTextLength;
+        boolean drawText=true;
+        for (long tickTime = startTickTime; tickTime < endTime; tickTime+= rulerTickMinor) {
+            int x0Pos = (int) (tickTime/scaleFactor) + proj.getTranslation().x;
+            if ((tickTime % rulerTickMajor) == 0) {
+            	if(drawEvery ||  drawText)
+            		gc.drawText(waveCanvas.timeToString(tickTime), x0Pos, area.y+textY);
                 gc.drawLine(x0Pos, area.y+majorTickY, x0Pos,area.y+ bottom);
+                drawText=!drawText;
             } else {
                 gc.drawLine(x0Pos, area.y+minorTickY, x0Pos, area.y+bottom);
             }

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/SignalPainter.java

@@ -12,8 +12,6 @@ package com.minres.scviewer.database.ui.swt.internal;
 
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.Map.Entry;
-import java.util.NavigableMap;
 
 import javax.swing.JPanel;
 
@@ -26,7 +24,9 @@ import org.eclipse.swt.graphics.Rectangle;
 
 import com.minres.scviewer.database.BitVector;
 import com.minres.scviewer.database.DoubleVal;
+import com.minres.scviewer.database.EventEntry;
 import com.minres.scviewer.database.IEvent;
+import com.minres.scviewer.database.IEventList;
 import com.minres.scviewer.database.IWaveform;
 import com.minres.scviewer.database.ui.TrackEntry;
 import com.minres.scviewer.database.ui.WaveformColors;
@@ -37,16 +37,16 @@ public class SignalPainter extends TrackPainter {
 		IEvent value;
 		boolean fromMap;
 
-		public SignalChange(Entry<Long, IEvent[]> entry) {
+		public SignalChange(EventEntry entry) {
-			time = entry.getKey();
+			time = entry.timestamp;
-			value = entry.getValue()[0];
+			value = entry.events[0];
 			fromMap = true;
 		}
 
-		public void set(Entry<Long, IEvent[]> entry, Long actTime) {
+		public void set(EventEntry entry, Long actTime) {
 			if (entry != null) {
-				time = entry.getKey();
+				time = entry.timestamp;
-				value = entry.getValue()[0];
+				value = entry.events[0];
 				fromMap = true;
 			} else {
 				time = actTime;
@@ -82,7 +82,7 @@ public class SignalPainter extends TrackPainter {
 	}
 
 	private int getXPosEnd(long time) {
-		long ltmp = time / this.waveCanvas.getScaleFactor();
+		long ltmp = time / this.waveCanvas.getScale();
 		return ltmp > maxPosX ? maxPosX : (int) ltmp;
 	}
 	
@@ -95,31 +95,26 @@ public class SignalPainter extends TrackPainter {
 		proj.setFillRule(SWT.FILL_EVEN_ODD);
 		proj.fillRectangle(area);
 
-		long scaleFactor = this.waveCanvas.getScaleFactor();
+		long scaleFactor = this.waveCanvas.getScale();
 		long beginPos = area.x;
 		long beginTime = beginPos*scaleFactor;
         long endTime = beginTime + area.width*scaleFactor;
 		
-		Entry<Long, IEvent[]> first = signal.getEvents().floorEntry(beginTime);
+		EventEntry first = signal.getEvents().floorEntry(beginTime);
-		Entry<Long, IEvent[]> last = signal.getEvents().floorEntry(endTime);
+		if (first == null)
-		if (first == null) {
-			if (last == null)
-				return;
 			first = signal.getEvents().firstEntry();
-		} else if (last == null) {
+		beginTime = first.timestamp;
-			last = signal.getEvents().lastEntry();
-		}
 		proj.setForeground(this.waveCanvas.styleProvider.getColor(WaveformColors.LINE));
 		proj.setLineStyle(SWT.LINE_SOLID);
 		proj.setLineWidth(1);
-		NavigableMap<Long, IEvent[]> entries = signal.getEvents().subMap(first.getKey(), false, last.getKey(), true);
+		IEventList entries = signal.getEvents().subMap(beginTime, true, endTime);
-		SignalChange left = new SignalChange(first);
+		SignalChange left = new SignalChange(entries.firstEntry());
-		SignalChange right = new SignalChange(entries.size() > 0 ? entries.firstEntry() : first);
+		SignalChange right = new SignalChange(entries.size() > 1 ? entries.higherEntry(left.time) : entries.firstEntry());
 		maxPosX = area.x + area.width;
 		yOffsetT = this.waveCanvas.styleProvider.getTrackHeight() / 5 + area.y;
 		yOffsetM = this.waveCanvas.styleProvider.getTrackHeight() / 2 + area.y;
 		yOffsetB = 4 * this.waveCanvas.styleProvider.getTrackHeight() / 5 + area.y;
-		int xSigChangeBeginVal = Math.max(area.x, (int) (left.time / this.waveCanvas.getScaleFactor()));
+		int xSigChangeBeginVal = Math.max(area.x, (int) (left.time / this.waveCanvas.getScale()));
 		int xSigChangeBeginPos = area.x;
 		int xSigChangeEndPos = Math.max(area.x, getXPosEnd(right.time));
 		
@@ -132,7 +127,7 @@ public class SignalPainter extends TrackPainter {
 				right.time = endTime;
 			} else {
 				multiple = true;
-				long eTime = (xSigChangeBeginVal + 1) * this.waveCanvas.getScaleFactor();
+				long eTime = (xSigChangeBeginVal + 1) * this.waveCanvas.getScale();
 				right.set(entries.floorEntry(eTime), endTime);
 				right.time = eTime;
 			}
@@ -152,16 +147,16 @@ public class SignalPainter extends TrackPainter {
 			multiple = false;
 			if (xSigChangeEndPos == xSigChangeBeginPos) {
 				multiple = true;
-				long eTime = (xSigChangeBeginPos + 1) * this.waveCanvas.getScaleFactor();
+				long eTime = (xSigChangeBeginPos + 1) * this.waveCanvas.getScale();
-				Entry<Long, IEvent[]> entry = entries.floorEntry(eTime);
+				EventEntry entry = entries.floorEntry(eTime);
-				if(entry!=null && entry.getKey()> right.time)
+				if(entry!=null && entry.timestamp> right.time)
 					right.set(entry, endTime);
 				xSigChangeEndPos = getXPosEnd(eTime);
 			}
 		} while (left.time < endTime);
 	}
 
-	private SignalStencil getStencil(GC gc, SignalChange left, NavigableMap<Long, IEvent[]> entries) {
+	private SignalStencil getStencil(GC gc, SignalChange left, IEventList entries) {
 		IEvent val = left.value;
 		if(val instanceof BitVector) {
 			BitVector bv = (BitVector) val;
@@ -253,15 +248,15 @@ public class SignalPainter extends TrackPainter {
 		private long maxVal;
 		private long minVal;
 		double yRange = (yOffsetB-yOffsetT);
-		public MultiBitStencilAnalog(NavigableMap<Long, IEvent[]> entries, Object left, boolean continous, boolean signed) {
+		public MultiBitStencilAnalog(IEventList entries, Object left, boolean continous, boolean signed) {
 			this.continous=continous;
 			this.signed=signed;
-			Collection<IEvent[]> values = entries.values();
+			Collection<EventEntry> ievents = entries.entrySet();
 			minVal=signed?((BitVector)left).toSignedValue():((BitVector)left).toUnsignedValue();
-			if(!values.isEmpty()) {
+			if(!ievents.isEmpty()) {
 				maxVal=minVal;
-				for (IEvent[] tp : entries.values())
+				for (EventEntry tp : ievents)
-					for(IEvent e: tp) {
+					for(IEvent e: tp.events) {
 						long v = signed?((BitVector)e).toSignedValue():((BitVector)e).toUnsignedValue();
 						maxVal=Math.max(maxVal, v);
 						minVal=Math.min(minVal, v);
@@ -358,15 +353,15 @@ public class SignalPainter extends TrackPainter {
 		
 		boolean continous=true;
 		
-		public RealStencil(NavigableMap<Long, IEvent[]> entries, Object left, boolean continous) {
+		public RealStencil(IEventList entries, Object left, boolean continous) {
 			this.continous=continous;
-			Collection<IEvent[]> values = entries.values();
+			Collection<EventEntry> values = entries.entrySet();
 			minVal=(Double) left;
 			range=2.0;
 			if(!values.isEmpty()) {
 				double maxVal=minVal;
-				for (IEvent[] val : entries.values())
+				for (EventEntry val : values)
-					for(IEvent e:val) {
+					for(IEvent e:val.events) {
 						double v = ((DoubleVal)e).value;
 						if(Double.isNaN(maxVal))
 							maxVal=v;

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/StreamPainter.java

@@ -10,8 +10,6 @@
  *******************************************************************************/
 package com.minres.scviewer.database.ui.swt.internal;
 
-import java.util.Map.Entry;
-import java.util.NavigableMap;
 import java.util.TreeMap;
 
 import org.eclipse.swt.SWT;
@@ -19,8 +17,10 @@ import org.eclipse.swt.graphics.Color;
 import org.eclipse.swt.graphics.Point;
 import org.eclipse.swt.graphics.Rectangle;
 
+import com.minres.scviewer.database.EventEntry;
 import com.minres.scviewer.database.EventKind;
 import com.minres.scviewer.database.IEvent;
+import com.minres.scviewer.database.IEventList;
 import com.minres.scviewer.database.IWaveform;
 import com.minres.scviewer.database.tx.ITx;
 import com.minres.scviewer.database.tx.ITxEvent;
@@ -36,6 +36,7 @@ public class StreamPainter extends TrackPainter{
 	private IWaveform stream;
 	private int txBase;
 	private int txHeight;
+	// TODO: remove TreeMap usage
 	private TreeMap<ITx, ITxEvent> seenTx;
 
 	public StreamPainter(WaveformCanvas waveCanvas, boolean even, TrackEntry trackEntry) {
@@ -66,15 +67,16 @@ public class StreamPainter extends TrackPainter{
 		proj.setFillRule(SWT.FILL_EVEN_ODD);
 		proj.fillRectangle(area);
 
-		long scaleFactor = this.waveCanvas.getScaleFactor();
+		long scaleFactor = this.waveCanvas.getScale();
 		long beginPos = area.x;
 		long beginTime = beginPos*scaleFactor;
 		long endTime = beginTime + area.width*scaleFactor;
 
-		Entry<Long,  IEvent[]> firstTx=stream.getEvents().floorEntry(beginTime);
+		IEventList events = stream.getEvents();
-		Entry<Long,  IEvent[]> lastTx=stream.getEvents().ceilingEntry(endTime);
+		EventEntry firstTx = events.floorEntry(beginTime);
-		if(firstTx==null) firstTx = stream.getEvents().firstEntry();
+		EventEntry lastTx = events.ceilingEntry(endTime);
-		if(lastTx==null) lastTx=stream.getEvents().lastEntry();
+		if(firstTx==null) firstTx = events.firstEntry();
+		if(lastTx==null) lastTx = events.lastEntry();
 		proj.setFillRule(SWT.FILL_EVEN_ODD);
 		proj.setLineStyle(SWT.LINE_SOLID);
 		proj.setLineWidth(1);
@@ -83,16 +85,15 @@ public class StreamPainter extends TrackPainter{
 		for( int y1=area.y+trackHeight/2; y1<area.y+trackEntry.height; y1+=trackHeight)
 			proj.drawLine(area.x, y1, area.x+area.width, y1);
 		if(firstTx==lastTx) {
-			for(IEvent txEvent: firstTx.getValue())
+			for(IEvent txEvent: firstTx.events)
 				drawTx(proj, area, ((ITxEvent)txEvent).getTransaction(), ((ITxEvent)txEvent).getRowIndex(), false);
 		}else{
 			seenTx.clear();
-			NavigableMap<Long, IEvent[]> entries = stream.getEvents().subMap(firstTx.getKey(), true, lastTx.getKey(), true);
 			ITxEvent highlighed=null;
 			proj.setForeground(this.waveCanvas.styleProvider.getColor(WaveformColors.LINE));
 			long selectedId=waveCanvas.currentSelection!=null? waveCanvas.currentSelection.getId():-1;
-			for(Entry<Long, IEvent[]> entry: entries.entrySet())
+			for(EventEntry entry: events.subMap(firstTx.timestamp, true, lastTx.timestamp))
-				for(IEvent e:entry.getValue()){
+				for(IEvent e:entry.events){
 					ITxEvent evt = (ITxEvent) e;
 					ITx tx = evt.getTransaction();
 					if(selectedId==tx.getId())
@@ -129,8 +130,8 @@ public class StreamPainter extends TrackPainter{
 
 		int offset = concurrencyIndex*this.waveCanvas.styleProvider.getTrackHeight();
 		Rectangle bb = new Rectangle(
-				(int)(tx.getBeginTime()/this.waveCanvas.getScaleFactor()), area.y+offset+txBase,
+				(int)(tx.getBeginTime()/this.waveCanvas.getScale()), area.y+offset+txBase,
-				(int)((tx.getEndTime()-tx.getBeginTime())/this.waveCanvas.getScaleFactor()), txHeight);
+				(int)((tx.getEndTime()-tx.getBeginTime())/this.waveCanvas.getScale()), txHeight);
 
 		if(bb.x+bb.width<area.x || bb.x>area.x+area.width) return;
 		if(bb.width==0){
@@ -154,12 +155,12 @@ public class StreamPainter extends TrackPainter{
 
 	public ITx getClicked(Point point) {
 		int lane=point.y/waveCanvas.styleProvider.getTrackHeight();
-		Entry<Long, IEvent[]> firstTx=stream.getEvents().floorEntry(point.x*waveCanvas.getScaleFactor());
+		EventEntry firstTx=stream.getEvents().floorEntry(point.x*waveCanvas.getScale());
 		if(firstTx!=null){
 			do {
-				ITx tx = getTxFromEntry(lane, point.x, firstTx);
+				ITx tx = getTxFromEntry(lane, point.x, firstTx.events);
 				if(tx!=null) return tx;
-				firstTx=stream.getEvents().lowerEntry(firstTx.getKey());
+				firstTx=stream.getEvents().lowerEntry(firstTx.timestamp);
 			}while(firstTx!=null);
 		}
 		return null;
@@ -173,11 +174,11 @@ public class StreamPainter extends TrackPainter{
 		this.stream = stream;
 	}
 
-	protected ITx getTxFromEntry(int lane, int offset, Entry<Long, IEvent[]> firstTx) {
+	protected ITx getTxFromEntry(int lane, int offset, IEvent[] firstTx) {
-		long timePoint=offset*waveCanvas.getScaleFactor();
+		long timePoint=offset*waveCanvas.getScale();
-		long timePointLow=(offset-5)*waveCanvas.getScaleFactor();
+		long timePointLow=(offset-5)*waveCanvas.getScale();
-		long timePointHigh=(offset+5)*waveCanvas.getScaleFactor();
+		long timePointHigh=(offset+5)*waveCanvas.getScale();
-		for(IEvent e:firstTx.getValue()){
+		for(IEvent e:firstTx){
 			if(e instanceof ITxEvent) {
 				ITxEvent evt = (ITxEvent) e;
 				ITx tx=evt.getTransaction();

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/TrackAreaPainter.java

@@ -43,6 +43,7 @@ public class TrackAreaPainter implements IPainter {
 			Integer firstKey=trackVerticalOffset.floorKey(area.y);
 			if(firstKey==null) firstKey=trackVerticalOffset.firstKey();
 			Integer lastKey = trackVerticalOffset.floorKey(area.y+area.height);
+			//if(lastKey==null) lastKey= trackVerticalOffset.lastKey();
 			Rectangle subArea = new Rectangle(area.x, 0, area.width, 0);
 			if(lastKey.equals(firstKey)){
 				subArea.y=firstKey;

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/WaveformCanvas.java

@@ -34,6 +34,7 @@ import org.eclipse.swt.widgets.Event;
 import org.eclipse.swt.widgets.ScrollBar;
 
 import com.google.common.collect.Lists;
+import com.minres.scviewer.database.EventEntry;
 import com.minres.scviewer.database.IEvent;
 import com.minres.scviewer.database.IWaveform;
 import com.minres.scviewer.database.RelationType;
@@ -41,20 +42,27 @@ import com.minres.scviewer.database.tx.ITx;
 import com.minres.scviewer.database.tx.ITxEvent;
 import com.minres.scviewer.database.ui.IWaveformStyleProvider;
 import com.minres.scviewer.database.ui.IWaveformView;
+import com.minres.scviewer.database.ui.IWaveformZoom;
 import com.minres.scviewer.database.ui.TrackEntry;
+import com.minres.scviewer.database.ui.ZoomKind;
 import com.minres.scviewer.database.ui.swt.Constants;
+import com.minres.scviewer.database.ui.swt.internal.slider.ZoomBar;
 
-public class WaveformCanvas extends Canvas {
+public class WaveformCanvas extends Canvas implements IWaveformZoom{
+
+	public static final long ZOOM_FIT = -2;
+
+	public static final long ZOOM_FULL = -1;
+
+	private static final int INITIAL_ZOOM_BAR_MAX = 1000;
 	
 	private boolean doubleBuffering = true;
 
 	IWaveformStyleProvider styleProvider;
 
-    private long scaleFactor = 1000000L; // 1ns
+	private int scaleMagnitude = 6;
 
-    String unit="ns";
+	private long scaleFactor = Constants.POWERS_OF_TEN[scaleMagnitude];
-    
-    private int level = 12;
 
 	private long maxTime;
 
@@ -76,22 +84,23 @@ public class WaveformCanvas extends Canvas {
 
 	private List<CursorPainter> cursorPainters;
 
+	private ZoomBar horizontal;
+
+	private int[] lastHorSelection;
+	
+	private long sliderScaleFactor = 1;
+	
+	private ScrollBar vertical;
+
 	HashMap<IWaveform, IWaveformPainter> wave2painterMap;
-    /**
+
-     * Constructor for ScrollableCanvas.
+	public WaveformCanvas(final Composite parent, int style, IWaveformStyleProvider styleProvider, ZoomBar.IProvider scrollbarProvider) {
-     * 
+		super(parent, (style & ~SWT.H_SCROLL) | SWT.DOUBLE_BUFFERED | SWT.NO_BACKGROUND | SWT.V_SCROLL );
-     * @param parent
-     *            the parent of this control.super(parent, style | SWT.DOUBLE_BUFFERED | SWT.NO_BACKGROUND | SWT.NO_REDRAW_RESIZE | SWT.V_SCROLL | SWT.H_SCROLL);
-     * @param style
-     *            the style of this control.
-     */
-    public WaveformCanvas(final Composite parent, int style, IWaveformStyleProvider styleProvider) {
-        super(parent, style | SWT.DOUBLE_BUFFERED | SWT.NO_BACKGROUND | SWT.V_SCROLL | SWT.H_SCROLL);
 		this.styleProvider=styleProvider;
 		addControlListener(new ControlAdapter() { /* resize listener. */
 			@Override
 			public void controlResized(ControlEvent event) {
-                syncScrollBars();
+				syncSb();
 			}
 		});
 		addPaintListener((final PaintEvent event) -> paint(event.gc));
@@ -101,6 +110,8 @@ public class WaveformCanvas extends Canvas {
 		cursorPainters= new ArrayList<>();
 		wave2painterMap=new HashMap<>();
 
+		horizontal = scrollbarProvider.getScrollBar();
+		vertical = getVerticalBar();
 		initScrollBars();
 		// order is important: it is bottom to top
 		trackAreaPainter=new TrackAreaPainter(this);
@@ -109,10 +120,10 @@ public class WaveformCanvas extends Canvas {
 		painterList.add(arrowPainter);
 		rulerPainter=new RulerPainter(this);
 		painterList.add(rulerPainter);
-		CursorPainter cp = new CursorPainter(this, scaleFactor * 10, cursorPainters.size()-1);
+		CursorPainter cp = new CursorPainter(this, getScale() * 10, cursorPainters.size()-1);
 		painterList.add(cp);
 		cursorPainters.add(cp);
-		CursorPainter marker = new CursorPainter(this, scaleFactor * 100, cursorPainters.size()-1);
+		CursorPainter marker = new CursorPainter(this, getScale() * 100, cursorPainters.size()-1);
 		painterList.add(marker);
 		cursorPainters.add(marker);
 		wave2painterMap=new HashMap<>();
@@ -144,89 +155,107 @@ public class WaveformCanvas extends Canvas {
 
 	public void setOrigin(int x, int y) {
 		checkWidget();
-        ScrollBar hBar = getHorizontalBar();
-        hBar.setSelection(-x);
-        x = -hBar.getSelection();
-        ScrollBar vBar = getVerticalBar();
-        vBar.setSelection(-y);
-        y = -vBar.getSelection();
 		origin.x = x;
 		origin.y = y;
-        syncScrollBars();
+		syncSb();
 	}
 
+	@Override
 	public long getMaxTime() {
 		return maxTime;
 	}
 
 	public void setMaxTime(long maxTime) {
 		this.maxTime = maxTime;
-        syncScrollBars();
+		if(maxTime>INITIAL_ZOOM_BAR_MAX) {
+			long maxBarTime = maxTime;
+			while(maxBarTime>Integer.MAX_VALUE)	maxBarTime/=1000;
+			horizontal.setMaximum((int) maxBarTime);
+		}
+		sliderScaleFactor = maxTime/horizontal.getMaximum();
+		syncSb();
 	}
 
-    public int getZoomLevel() {
+	@Override
-        return level;
+	public long getScale() {
+		return scaleFactor;
 	}
 
-    public int getMaxZoomLevel(){
+	@Override
-    	return Constants.UNIT_MULTIPLIER.length*Constants.UNIT_STRING.length-1;
+	public void setScale(long factor) {
+		setScalingFactor(factor, (getMaxVisibleTime()+getMinVisibleTime())/2);
 	}
 
-    public void setZoomLevel(int level) {
+	@Override
-		long tc=cursorPainters.get(0).getTime(); // cursor time
+	public void setVisibleRange(long startTime, long endTime) {
-		setZoomLevel(level, tc);
+		assert(startTime<endTime);
+		long time_diff = endTime-startTime;
+		long factor = (time_diff*11/10)/getClientArea().width;
+		setScalingFactor(factor, startTime+time_diff/2);
 	}
 
-    public void setZoomLevel(int level, long centerTime) {
+	//@Override
-    	//FIXME: keep center if zoom-out and cursor is not in view
+	public void setScalingFactor(long factor, long centerTime) {
-    	if(level<0) level = 0;
+		Rectangle clientArea = getClientArea();
-		long xc=centerTime/this.scaleFactor; // cursor total x-offset
+		long clientAreaWidth = clientArea.width;
-    	if(level<Constants.UNIT_MULTIPLIER.length*Constants.UNIT_STRING.length){
+		long maxFactor=maxTime/clientAreaWidth;
-    		this.scaleFactor = (long) Math.pow(10, level>>1);
+		if(factor<0) {
-    		if(level%2==1) this.scaleFactor*=3;
+			if(factor== ZOOM_FIT) {
+				long cTime = getCursorPainters().get(0).getTime();
+				long time_diff = centerTime>cTime?centerTime-cTime:cTime-centerTime;
+				centerTime = (centerTime>cTime?cTime:centerTime)+time_diff/2;
+				factor = (time_diff*11/10)/clientAreaWidth;
+			} else if(factor== ZOOM_FULL)
+				factor = maxFactor;
+		} 
+		if(factor==0)
+			factor=1;
+		else if(factor>maxFactor)
+			factor=maxFactor;
+		if(factor!=getScale() || (getMaxVisibleTime()+getMinVisibleTime()/2) != centerTime) {
+			updateScaleFactor(factor);
 			ITx tx = arrowPainter.getTx();
 			arrowPainter.setTx(null);
 			/*
 			 * xc = tc/oldScaleFactor
 			 * xoffs = xc+origin.x
 			 * xcn = tc/newScaleFactor
-    		 * t0n = (xcn-xoffs)*scaleFactor
+			 * t0n = (xcn-xoffs)*getScale()
 			 */
-			long xoffs=xc+origin.x; // cursor offset relative to left border
+			long xoffs = clientAreaWidth/2;
-			long xcn=centerTime/scaleFactor; // new total x-offset
+			long xcn=centerTime/getScale(); // new total x-offset
 			long originX=xcn-xoffs;
 			if(originX>0) {
 				origin.x=(int) -originX; // new cursor time offset relative to left border
 			}else {
 				origin.x=0;
 			}
-    		syncScrollBars();
+			syncSb();
 			arrowPainter.setTx(tx);    		
 			redraw();
-    		this.level = level;
 		}
 	}
 
-    public long getScaleFactor() {
+	private void updateScaleFactor(long factor) {
-        return scaleFactor;
+		scaleFactor = factor;
+		scaleMagnitude = 0;
+		for(int i=Constants.POWERS_OF_TEN.length-1; i>0; i--) {
+			if(scaleFactor>=Constants.POWERS_OF_TEN[i]) {
+				scaleMagnitude = i;
+				break;
+			}
+		}
 	}
 
-    public long getScaleFactorPow10() {
+	@Override
-    	int scale = level/Constants.UNIT_MULTIPLIER.length;
+	public String timeToString(long time) {
-    	double res = Math.pow(1000, scale);
+		int idx = scaleMagnitude/3;
-    	return (long) res;
+		double fTime = (double)time/Constants.UNIT_MULTIPLIER[idx];
-    }
+		return Constants.getTimeFormatForLevel(idx).format(fTime)+Constants.UNIT_STRING[idx];
-
-    public String getUnitStr(){
-        return Constants.UNIT_STRING[level/Constants.UNIT_MULTIPLIER.length];
-    }
-     
-    public int getUnitMultiplier(){
-        return Constants.UNIT_MULTIPLIER[level%Constants.UNIT_MULTIPLIER.length];
 	}
 
 	public long getTimeForOffset(int xOffset){
-        return (xOffset-origin.x) * scaleFactor;
+		return (xOffset-origin.x) * getScale();
 	}
 
 	public void addPainter(IPainter painter) {
@@ -246,7 +275,7 @@ public class WaveformCanvas extends Canvas {
 	void clearAllWaveformPainter(boolean update) {
 		trackAreaPainter.trackVerticalOffset.clear();
 		wave2painterMap.clear();
-        if(update) syncScrollBars();
+		if(update) syncSb();
 	}
 
 	public void addWaveformPainter(IWaveformPainter painter) {
@@ -256,7 +285,7 @@ public class WaveformCanvas extends Canvas {
 	void addWaveformPainter(IWaveformPainter painter, boolean update) {
 		trackAreaPainter.addTrackPainter(painter);
 		wave2painterMap.put(painter.getTrackEntry().waveform, painter);
-        if(update) syncScrollBars();
+		if(update) syncSb();
 	}
 
 	public List<CursorPainter> getCursorPainters() {
@@ -265,26 +294,41 @@ public class WaveformCanvas extends Canvas {
 
 	/* Initialize the scrollbar and register listeners. */
 	private void initScrollBars() {
-        ScrollBar horizontal = getHorizontalBar();
 		horizontal.setEnabled(false);
 		horizontal.setVisible(true);
 		horizontal.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent event) {
-                if (painterList.isEmpty())
+				if (!painterList.isEmpty()) {
-                    return;
+					int[] sel = horizontal.getSelection();
-                setOrigin(-((ScrollBar) event.widget).getSelection(), origin.y);
+					long lowerTime = sel[0]*sliderScaleFactor;
+					long upperTime = sel[1]*sliderScaleFactor;
+					if(sel[1]-sel[0] != lastHorSelection[1]-lastHorSelection[0]) {
+						long time_diff = upperTime-lowerTime;
+						long factor = time_diff/getClientArea().width;
+						setScalingFactor(factor, lowerTime+time_diff/2);
+					} else {
+						origin.x = -(int) (lowerTime/getScale());
+						WaveformCanvas.this.getDisplay().asyncExec(() -> {redraw();});
+					}
+					lastHorSelection=sel;
+				}
 			}
 		});
-        ScrollBar vertical = getVerticalBar();
+		horizontal.setMinimum(0);
+		horizontal.setMaximum(INITIAL_ZOOM_BAR_MAX);
+		lastHorSelection = horizontal.getSelection();
+		
 		vertical.setEnabled(false);
 		vertical.setVisible(true);
 		vertical.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent event) {
-                if (painterList.isEmpty())
+				if (!painterList.isEmpty()) {
-                    return;
+					origin.y=-vertical.getSelection();
-                setOrigin(origin.x, -((ScrollBar) event.widget).getSelection());
+					fireSelectionEvent();
+					WaveformCanvas.this.getDisplay().asyncExec(() -> {redraw();});
+				}
 			}
 		});
 	}
@@ -294,50 +338,48 @@ public class WaveformCanvas extends Canvas {
 	 * range, it will correct it. This function considers only following factors
 	 * :<b> transform, image size, client area</b>.
 	 */
-    public void syncScrollBars() {
+	public void syncSb() {
-        if (painterList.isEmpty()) {
+		if (!painterList.isEmpty()) {
+			syncHSb();
+			syncVSb();
+			fireSelectionEvent();
+		}
 		redraw();
-            return;
 	}
-        int height = trackAreaPainter.getHeight(); // incl. Ruler
-        long width = maxTime / scaleFactor;
-        Rectangle clientArea=getClientArea();
-        ScrollBar horizontal = getHorizontalBar();
-        horizontal.setIncrement(getClientArea().width / 100);
-        horizontal.setPageIncrement(getClientArea().width);
-        int clientWidthw = clientArea.width;
-        if (width > clientWidthw) { /* image is wider than client area */
-        	horizontal.setMinimum(0);
-            horizontal.setMaximum((int)width);
-            horizontal.setEnabled(true);
-            if (-origin.x > horizontal.getMaximum() - clientWidthw) {
-                origin.x = -horizontal.getMaximum() + clientWidthw;
-            }
-        } else { /* image is narrower than client area */
-            horizontal.setEnabled(false);
-        }
-        horizontal.setThumb(clientWidthw);
-        horizontal.setSelection(-origin.x);
 
-        ScrollBar vertical = getVerticalBar();
+	private void syncVSb() {
-        vertical.setIncrement(getClientArea().height / 100);
+		Rectangle clientArea=getClientArea();
-        vertical.setPageIncrement(getClientArea().height);
+		int height = trackAreaPainter.getHeight(); // incl. Ruler
-        int clientHeighth = clientArea.height;
+		int clientHeight = clientArea.height;
-        if (height > clientHeighth) { /* image is higher than client area */
+		vertical.setIncrement(clientHeight / 100);
+		vertical.setPageIncrement(clientHeight/2);
+		if (height > clientHeight) { /* image is higher than client area */
 			vertical.setMinimum(0);
 			vertical.setMaximum(height);
 			vertical.setEnabled(true);
-            if ( -origin.y > vertical.getMaximum() - clientHeighth) {
+			if ( -origin.y > vertical.getMaximum() - clientHeight) {
-                origin.y = -vertical.getMaximum() + clientHeighth;
+				origin.y = -vertical.getMaximum() + clientHeight;
 			}
 		} else { /* image is less higher than client area */
-            vertical.setMaximum(clientHeighth);
+			vertical.setMaximum(clientHeight);
 			vertical.setEnabled(false);
 		}
-        vertical.setThumb(clientHeighth);
+		vertical.setThumb(clientHeight);
 		vertical.setSelection(-origin.y);
-        redraw();
+	}
-        fireSelectionEvent();
+
+	private void syncHSb() {
+		horizontal.setEnabled(wave2painterMap.size()>0);
+		Rectangle clientArea=getClientArea();
+		int clientWidth = clientArea.width;
+		if(sliderScaleFactor>0) {
+			int lower = (int) ( (           -origin.x  * getScale()) / sliderScaleFactor);
+			int upper = (int) (((clientWidth-origin.x) * getScale()) / sliderScaleFactor);
+			lastHorSelection = new int[] {Math.max(lower,0), Math.min(upper, horizontal.getMaximum())};
+			horizontal.setSelection(lastHorSelection);
+		}
+		long width = maxTime / getScale();
+		horizontal.setButtonsEnabled(width > clientWidth);
 	}
 
 	/* Paint function */
@@ -387,7 +429,7 @@ public class WaveformCanvas extends Canvas {
 					result.add(entry.getValue().getTrackEntry());
 				}
 			} else if (p instanceof CursorPainter) {
-                if (Math.abs(point.x - origin.x - ((CursorPainter) p).getTime()/scaleFactor) < 2) {
+				if (Math.abs(point.x - origin.x - ((CursorPainter) p).getTime()/getScale()) < 2) {
 					result.add(p);
 				}
 			}
@@ -415,11 +457,11 @@ public class WaveformCanvas extends Canvas {
 	}
 
 	public void reveal(ITx tx) {
-        int lower = (int) (tx.getBeginTime() / scaleFactor);
+		int lower = (int) (tx.getBeginTime() / getScale());
-        int higher = (int) (tx.getEndTime() / scaleFactor);
+		int higher = (int) (tx.getEndTime() / getScale());
 		Point size = getSize();
-        size.x -= getVerticalBar().getSize().x + 2;
+		size.x -= vertical.getSize().x + 2;
-        size.y -= getHorizontalBar().getSize().y;
+		size.y -= horizontal.getSize().y;
 		if (lower < -origin.x) {
 			setOrigin(-lower, origin.y);
 		} else if (higher > (size.x - origin.x)) {
@@ -427,8 +469,8 @@ public class WaveformCanvas extends Canvas {
 		}
 		for (IWaveformPainter painter : wave2painterMap.values()) {
 			if (painter instanceof StreamPainter && ((StreamPainter) painter).getStream() == tx.getStream()) {
-            	Entry<Long, IEvent[]> entry = tx.getStream().getEvents().floorEntry(tx.getBeginTime());
+				EventEntry entry = tx.getStream().getEvents().floorEntry(tx.getBeginTime());
-            	Optional<IEvent> res = Arrays.stream(entry.getValue()).filter(e -> ((ITxEvent)e).getTransaction().equals(tx)).findFirst();
+				Optional<IEvent> res = Arrays.stream(entry.events).filter(e -> ((ITxEvent)e).getTransaction().equals(tx)).findFirst();
 				if(res.isPresent()) {
 					int top = painter.getVerticalOffset() + styleProvider.getTrackHeight() * ((ITxEvent)res.get()).getRowIndex();
 					int bottom = top + styleProvider.getTrackHeight();
@@ -448,9 +490,8 @@ public class WaveformCanvas extends Canvas {
 			if(te.waveform == waveform) {
 				Point size = getSize();
 				size.y -=+rulerHeight;
-                ScrollBar sb = getHorizontalBar();
+				if((horizontal.getStyle()&SWT.SCROLLBAR_OVERLAY)!=0 && horizontal.isVisible())
-                if((sb.getStyle()&SWT.SCROLLBAR_OVERLAY)!=0 && sb.isVisible())
+					size.y-=  horizontal.getSize().y;
-                	size.y-=  getHorizontalBar().getSize().y;
 				int top = te.vOffset;
 				int bottom = top + styleProvider.getTrackHeight();
 				if (top < -origin.y) {
@@ -463,10 +504,10 @@ public class WaveformCanvas extends Canvas {
 	}
 
 	public void reveal(long time) {
-        int scaledTime = (int) (time / scaleFactor);
+		int scaledTime = (int) (time / getScale());
 		Point size = getSize();
-        size.x -= getVerticalBar().getSize().x + 2;
+		size.x -= vertical.getSize().x + 2;
-        size.y -= getHorizontalBar().getSize().y;
+		size.y -= horizontal.getSize().y;
 		if (scaledTime < -origin.x) {
 			setOrigin(-scaledTime+10, origin.y);
 		} else if (scaledTime > (size.x - origin.x)) {
@@ -474,6 +515,13 @@ public class WaveformCanvas extends Canvas {
 		}
 	}
 
+	@Override
+	public void centerAt(long time) {
+		int scaledTime = (int) (time / getScale());
+		int newX = -scaledTime+getWidth()/2;
+		setOrigin(newX>0?0:newX, origin.y);
+	}
+
 	public int getRulerHeight() {
 		return rulerHeight;
 	}
@@ -506,16 +554,55 @@ public class WaveformCanvas extends Canvas {
 		}
 	}
 
-    long getMaxVisibleTime() {
+
-    	return (getClientArea().width+origin.x)*scaleFactor;
+	@Override
+	public long getMaxVisibleTime() {
+		return (getClientArea().width-origin.x)*getScale();
 	}
 
-    long getMinVisibleTime() {
+	@Override
-    	return origin.x * scaleFactor;
+	public long getMinVisibleTime() {
+		return -origin.x * getScale();
+	}
+
+	@Override
+	public void setMinVisibleTime(long time) {
+		long duration = getMaxVisibleTime()-getMinVisibleTime();
+		if(time>0) {
+			if((time+duration)<getMaxTime()) {
+				int scaledTime = (int) (time / getScale());
+				setOrigin(-scaledTime, origin.y);
+			}
+		} else {
+			setOrigin(0, origin.y);
+		}
+	}
+
+	@Override
+	public void zoom(ZoomKind kind) {
+		switch(kind) {
+		case IN:
+			setScale(getScale()/2);
+			break;
+		case OUT:
+			setScale(getScale()*2);			
+			break;
+		case FIT:
+			setScalingFactor(WaveformCanvas.ZOOM_FIT, cursorPainters.get(1).getTime());
+			break;
+		case FULL:
+			setScale(WaveformCanvas.ZOOM_FULL);
+			break;
+		}
 	}
 
 	public void setStyleProvider(IWaveformStyleProvider styleProvider) {
 		this.styleProvider=styleProvider;
 		redraw();
 	}
+
+	public int getScaleMagnitude() {
+		return scaleMagnitude;
+	}
+
 }

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/WaveformView.java

@@ -13,7 +13,6 @@ package com.minres.scviewer.database.ui.swt.internal;
 import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
 import java.beans.PropertyChangeSupport;
-import java.text.DecimalFormat;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
@@ -21,7 +20,6 @@ import java.util.Collections;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Map.Entry;
-import java.util.NavigableMap;
 import java.util.NoSuchElementException;
 import java.util.Optional;
 import java.util.TreeMap;
@@ -77,8 +75,10 @@ import org.eclipse.wb.swt.SWTResourceManager;
 import com.google.common.collect.Lists;
 import com.minres.scviewer.database.BitVector;
 import com.minres.scviewer.database.DoubleVal;
+import com.minres.scviewer.database.EventEntry;
 import com.minres.scviewer.database.EventKind;
 import com.minres.scviewer.database.IEvent;
+import com.minres.scviewer.database.IEventList;
 import com.minres.scviewer.database.IWaveform;
 import com.minres.scviewer.database.RelationType;
 import com.minres.scviewer.database.WaveformType;
@@ -89,8 +89,9 @@ import com.minres.scviewer.database.ui.GotoDirection;
 import com.minres.scviewer.database.ui.ICursor;
 import com.minres.scviewer.database.ui.IWaveformStyleProvider;
 import com.minres.scviewer.database.ui.IWaveformView;
+import com.minres.scviewer.database.ui.IWaveformZoom;
 import com.minres.scviewer.database.ui.TrackEntry;
-import com.minres.scviewer.database.ui.swt.Constants;
+import com.minres.scviewer.database.ui.swt.internal.slider.ZoomBar;
 
 public class WaveformView implements IWaveformView {
 
@@ -98,8 +99,6 @@ public class WaveformView implements IWaveformView {
 
 	private PropertyChangeSupport pcs;
 
-	static final DecimalFormat df = new DecimalFormat("#0.00####");
-
 	private ITx currentTxSelection;
 
 	private ArrayList<TrackEntry> currentWaveformSelection = new ArrayList<>();
@@ -114,6 +113,10 @@ public class WaveformView implements IWaveformView {
 
 	private final Canvas valueList;
 
+	private final Control nameFill;
+	
+	private final Control valueFill;
+
 	final WaveformCanvas waveformCanvas;
 
 	final ToolTipHandler toolTipHandler;
@@ -162,8 +165,7 @@ public class WaveformView implements IWaveformView {
 									: streams.subList(firstIdx, lastIdx + 1);
 							setSelection(new StructuredSelection(res), (e.stateMask & SWT.CTRL) != 0, false);
 						} else
-							setSelection(new StructuredSelection(entry.getValue()), (e.stateMask & SWT.CTRL) != 0,
+							setSelection(new StructuredSelection(entry.getValue()), (e.stateMask & SWT.CTRL) != 0, false);
-									false);
 					} else {
 						setSelection(new StructuredSelection(entry.getValue()), (e.stateMask & SWT.CTRL) != 0, false);
 					}
@@ -196,88 +198,69 @@ public class WaveformView implements IWaveformView {
 			down = false;
 			if (start == null)
 				return;
-			if ((e.stateMask & SWT.MODIFIER_MASK & ~SWT.SHIFT) != 0)
+			if ((e.stateMask & SWT.MODIFIER_MASK & ~(SWT.SHIFT | SWT.CTRL)) != 0)
-				return; // don't react on modifier except shift
+				return; // don't react on modifier except shift and control
-			if (e.button == 1 && Math.abs(e.x - start.x) > 3) {
+			boolean isCtrl = (e.stateMask & SWT.CTRL)!=0;
+			boolean isShift = (e.stateMask & SWT.SHIFT)!=0;
+			if (e.button == 1) {
+				if (Math.abs(e.x - start.x) > 3) { // was drag event
 					asyncUpdate(e.widget);
 					long startTime = waveformCanvas.getTimeForOffset(start.x);
 					long endTime = waveformCanvas.getTimeForOffset(end.x);
-				long targetTimeRange = endTime - startTime;
+					if(startTime<endTime) {
+						waveformCanvas.setVisibleRange(startTime, endTime);
+					} else if(start.x!=end.x){
+						long targetTimeRange = startTime-endTime;
 						long currentTimeRange = waveformCanvas.getMaxVisibleTime() - waveformCanvas.getMinVisibleTime();
-				if (targetTimeRange == 0)
+						long factor = currentTimeRange/targetTimeRange *waveformCanvas.getScale();
-					return;
+						waveformCanvas.setScalingFactor(factor, (startTime+endTime)/2);
-				long relation = currentTimeRange / targetTimeRange;
+												
-				long i = 1;
-				int level = 0;
-				do {
-					if (relation < 0) {
-						if (-relation < i) {
-							break;
 					}
-						level--;
+				} else if( isShift) { // set marker (button 1 and shift)
-						if (-relation < i * 3) {
+					setMarkerTime(selectedMarker, snapOffsetToEvent(start));
-							break;
+				} else if(isCtrl) {	// set cursor (button 1 and ctrl)
-						}
+					setCursorTime(snapOffsetToEvent(start));
-						level--;
+				} else { // set cursor (button 1 only)
-					} else {
+					if (Math.abs(e.y - start.y) < 3) {
-						if (relation < i) {
-							break;
-						}
-						level++;
-						if (relation < i * 3) {
-							break;
-						}
-						level++;
-					}
-					i = i * 10;
-				} while (i < 10000);
-				if (i < 10000) {
-					int curLevel = waveformCanvas.getZoomLevel();
-					waveformCanvas.setZoomLevel(curLevel - level, (startTime + endTime) / 2);
-				}
-			} else if (e.button == 1 && ((e.stateMask & SWT.SHIFT) == 0)) {
-				// set cursor (button 1 and no shift)
-				if (Math.abs(e.x - start.x) < 3 && Math.abs(e.y - start.y) < 3) {
 						// first set cursor time
 						setCursorTime(snapOffsetToEvent(start));
 						// then set selection and reveal
 						setSelection(new StructuredSelection(initialSelected));
-					asyncUpdate(e.widget);
 					}
-			} else if (e.button == 2 || (e.button == 1 && (e.stateMask & SWT.SHIFT) != 0)) {
-				// set marker (button 1 and shift)
-				setMarkerTime(snapOffsetToEvent(start), selectedMarker);
-				asyncUpdate(e.widget);
 				}
+			} else if (e.button == 2) { // set marker (button 2)
+				setMarkerTime(selectedMarker, snapOffsetToEvent(start));
+			}
+			asyncUpdate(e.widget);
 		}
 
 		protected long snapOffsetToEvent(Point p) {
 			long time = waveformCanvas.getTimeForOffset(p.x);
-			long scaling = 5 * waveformCanvas.getScaleFactor();
+			long scaling = 5 * waveformCanvas.getScale();
 			for (Object o : waveformCanvas.getElementsAt(p)) {
-				Entry<Long, IEvent[]> floorEntry = null;
+				EventEntry floorEntry = null;
-				Entry<Long, IEvent[]> ceilEntry = null;
+				EventEntry ceilEntry = null;
 				if (o instanceof TrackEntry) {
 					TrackEntry entry = (TrackEntry) o;
-					NavigableMap<Long, IEvent[]> map = entry.waveform.getEvents();
+					IEventList map = entry.waveform.getEvents();
 					floorEntry = map.floorEntry(time);
 					ceilEntry = map.ceilingEntry(time);
 				} else if (o instanceof ITx) {
-					NavigableMap<Long, IEvent[]> map = ((ITx) o).getStream().getEvents();
+					IEventList map = ((ITx) o).getStream().getEvents();
 					floorEntry = map.floorEntry(time);
 					ceilEntry = map.ceilingEntry(time);
 				}
-				if (floorEntry != null && time - floorEntry.getKey() > scaling)
+				if (floorEntry != null && time - floorEntry.timestamp > scaling)
 					floorEntry = null;
-				if (ceilEntry != null && ceilEntry.getKey() - time > scaling)
+				if (ceilEntry != null && ceilEntry.timestamp - time > scaling)
 					ceilEntry = null;
 				if (ceilEntry == null && floorEntry != null) {
-					time = floorEntry.getKey();
+					time = floorEntry.timestamp;
 				} else if (ceilEntry != null && floorEntry == null) {
-					time = ceilEntry.getKey();
+					time = ceilEntry.timestamp;
 				} else if (ceilEntry != null && floorEntry != null) {
-					time = time - floorEntry.getKey() < ceilEntry.getKey() - time ? floorEntry.getKey()
+					time = time - floorEntry.timestamp < ceilEntry.timestamp - time ? floorEntry.timestamp
-							: ceilEntry.getKey();
+							: ceilEntry.timestamp;
 				}
 			}
 			return time;
@@ -287,6 +270,25 @@ public class WaveformView implements IWaveformView {
 		public void handleEvent(Event e) {
 			switch (e.type) {
 			case SWT.MouseWheel:
+				if((e.stateMask & SWT.CTRL) != 0) {
+					if(e.count<0) // up scroll
+						waveformCanvas.setScale(waveformCanvas.getScale()*11/10);
+					else // down scroll
+						waveformCanvas.setScale(waveformCanvas.getScale()*10/11);
+					e.doit=false;
+				} else if((e.stateMask & SWT.SHIFT) != 0) {
+					long upper = waveformCanvas.getMaxVisibleTime();
+					long lower = waveformCanvas.getMinVisibleTime();
+					long duration = upper-lower;
+					if(e.count<0) { // up scroll
+						long newLower = Math.min(waveformCanvas.getMaxTime()-duration, lower+duration/10);
+						waveformCanvas.setMinVisibleTime(newLower);
+					} else {// down scroll
+						long newLower = Math.max(0, lower-duration/10);
+						waveformCanvas.setMinVisibleTime(newLower);
+					}
+					e.doit=false;
+				}
 				break;
 			case SWT.MouseDown:
 				start = new Point(e.x, e.y);
@@ -346,7 +348,25 @@ public class WaveformView implements IWaveformView {
 		rightSash.setBackground(SWTResourceManager.getColor(SWT.COLOR_GRAY));
 
 		Composite valuePane = new Composite(rightSash, SWT.NONE);
-		waveformCanvas = new WaveformCanvas(rightSash, SWT.NONE, styleProvider);
+		
+		Composite waveformPane = new Composite(rightSash, SWT.NONE);
+		GridLayout gl_waveformPane = new GridLayout(1, false);
+		gl_waveformPane.verticalSpacing = 0;
+		gl_waveformPane.marginWidth = 0;
+		gl_waveformPane.marginHeight = 0;
+		waveformPane.setLayout(gl_waveformPane);
+		
+		waveformCanvas = new WaveformCanvas(waveformPane, SWT.NONE | SWT.V_SCROLL /*| SWT.H_SCROLL*/, styleProvider, new ZoomBar.IProvider() {
+			
+			@Override
+			public ZoomBar getScrollBar() {
+				ZoomBar timeSliderPane = new ZoomBar(waveformPane, SWT.NONE);
+				GridData gd_timeSliderPane = new GridData(SWT.FILL, SWT.BOTTOM, false, false, 1, 1);
+				timeSliderPane.setLayoutData(gd_timeSliderPane);
+				return timeSliderPane;
+			}
+		});
+		waveformCanvas.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));
 		
 		// create the name pane
 		createTextPane(namePane, "Name");
@@ -363,7 +383,10 @@ public class WaveformView implements IWaveformView {
 			@Override
 			public void controlResized(ControlEvent e) {
 				nameListScrolled.getVerticalBar().setVisible(false);
-
+				if(nameListScrolled.getSize().y == nameList.getSize().y) {
+					((GridData)nameFill.getLayoutData()).heightHint=18;
+					namePane.layout();
+				}
 			}
 		});
 		nameList = new Canvas(nameListScrolled, SWT.NONE) {
@@ -382,6 +405,7 @@ public class WaveformView implements IWaveformView {
 		});
 		nameList.addMouseListener(nameValueMouseListener);
 		nameListScrolled.setContent(nameList);
+		nameFill = createFill(namePane);
 		
 		createTextPane(valuePane, "Value");
 
@@ -395,7 +419,10 @@ public class WaveformView implements IWaveformView {
 			@Override
 			public void controlResized(ControlEvent e) {
 				valueListScrolled.getVerticalBar().setVisible(false);
-
+				if(valueListScrolled.getSize().y == valueList.getSize().y) {
+					((GridData)valueFill.getLayoutData()).heightHint=18;
+					valuePane.layout();
+				}
 			}
 		});
 		valueList = new Canvas(valueListScrolled, SWT.NONE) {
@@ -414,6 +441,7 @@ public class WaveformView implements IWaveformView {
 		});
 		valueList.addMouseListener(nameValueMouseListener);
 		valueListScrolled.setContent(valueList);
+		valueFill = createFill(valuePane);
 
 		waveformCanvas.setMaxTime(1);
 		waveformCanvas.addPaintListener(waveformMouseListener);
@@ -460,6 +488,26 @@ public class WaveformView implements IWaveformView {
 
 		toolTipHandler = new ToolTipHandler(parent.getShell());
 		toolTipHandler.activateHoverHelp(waveformCanvas);
+	    // This is the filter that prevents the default handling of mouse wheel in waveformCanvas
+	    getControl().getDisplay().addFilter(SWT.MouseWheel, new Listener() {
+	        @Override
+	        public void handleEvent(Event e) {
+	            // Check if it's the correct widget
+	            if(e.widget.equals(waveformCanvas) && (e.stateMask & SWT.CTRL) != 0) {
+	            	waveformMouseListener.handleEvent(e);
+	                e.doit = false;
+	            }
+	        }
+	    });
+	}
+
+	private Control createFill(Composite pane) {
+		Label cLabel = new Label(pane, SWT.NONE);
+		cLabel.setBackground(SWTResourceManager.getColor(SWT.COLOR_WIDGET_BACKGROUND));
+		GridData gd_cLabel = new GridData(SWT.FILL, SWT.FILL, true, false, 1, 1);
+		gd_cLabel.heightHint = 0;
+		cLabel.setLayoutData(gd_cLabel);
+		return cLabel;
 	}
 
 	private void createTextPane(Composite namePane, String text) {
@@ -527,7 +575,7 @@ public class WaveformView implements IWaveformView {
 			tracksVerticalHeight += streamEntry.height;
 			even = !even;
 		}
-		waveformCanvas.syncScrollBars();
+		waveformCanvas.syncSb();
 		nameList.setSize(nameMaxWidth + 15, tracksVerticalHeight);
 		nameListScrolled.setMinSize(nameMaxWidth + 15, tracksVerticalHeight);
 		nameList.redraw();
@@ -580,10 +628,10 @@ public class WaveformView implements IWaveformView {
 				}
 			} else if (entry.waveform.getType() == WaveformType.TRANSACTION) {
 				ITx[] resultsList = new ITx[entry.waveform.getRowCount()];
-				Entry<Long, IEvent[]> firstTx = entry.waveform.getEvents().floorEntry(time);
+				EventEntry firstTx = entry.waveform.getEvents().floorEntry(time);
 				if (firstTx != null) {
 					do {
-						for (IEvent e : firstTx.getValue()) {
+						for (IEvent e : firstTx.events) {
 							if (e instanceof ITxEvent) {
 								ITxEvent evt = ((ITxEvent) e);
 								ITx tx = evt.getTransaction();
@@ -593,7 +641,7 @@ public class WaveformView implements IWaveformView {
 									resultsList[evt.getRowIndex()] = evt.getTransaction();
 							}
 						}
-						firstTx = entry.waveform.getEvents().lowerEntry(firstTx.getKey());
+						firstTx = entry.waveform.getEvents().lowerEntry(firstTx.timestamp);
 					} while (firstTx != null && !isArrayFull(resultsList));
 					boolean separator = false;
 					StringBuilder sb = new StringBuilder();
@@ -751,8 +799,9 @@ public class WaveformView implements IWaveformView {
 				if (!add)
 					currentWaveformSelection.clear();
 				List<?> selList = sel.toList();
-				if (selList.get(0) instanceof ITx) {
+				for(Object o: selList) {
-					ITx txSel = (ITx) selList.get(0);
+					if (o instanceof ITx) {
+						ITx txSel = (ITx) o;
 						TrackEntry trackEntry = selList.size() == 2 && selList.get(1) instanceof TrackEntry
 								? (TrackEntry) selList.get(1)
 										: null;
@@ -767,12 +816,14 @@ public class WaveformView implements IWaveformView {
 						currentWaveformSelection.clear();
 						currentWaveformSelection.add(trackEntry);
 						selectionChanged = true;
-				} else if (selList.size() == 1 && selList.get(0) instanceof TrackEntry) {
+					} else if (o instanceof TrackEntry) {
-					currentWaveformSelection.add((TrackEntry) selList.get(0));
+						TrackEntry e = (TrackEntry)o;
-					if (currentTxSelection != null)
+						if(!currentWaveformSelection.contains(e))
-						currentTxSelection = null;
+							currentWaveformSelection.add(e);
 						selectionChanged = true;
 					}
+					
+				}
 			}
 		} else {
 			if (currentTxSelection != null || !currentWaveformSelection.isEmpty())
@@ -854,11 +905,11 @@ public class WaveformView implements IWaveformView {
 						}
 					}
 					if (transaction == null) {
-						Entry<Long, IEvent[]> entry = selectedWaveform.waveform.getEvents()
+						EventEntry entry = selectedWaveform.waveform.getEvents()
 								.higherEntry(currentTxSelection.getBeginTime());
 						if (entry != null)
 							do {
-								for (IEvent evt : entry.getValue()) {
+								for (IEvent evt : entry.events) {
 									if (evt instanceof ITxEvent && (evt.getKind() == EventKind.BEGIN
 											|| evt.getKind() == EventKind.SINGLE)) {
 										transaction = ((ITxEvent) evt).getTransaction();
@@ -866,7 +917,7 @@ public class WaveformView implements IWaveformView {
 									}
 								}
 								if (transaction == null)
-									entry = selectedWaveform.waveform.getEvents().higherEntry(entry.getKey());
+									entry = selectedWaveform.waveform.getEvents().higherEntry(entry.timestamp);
 							} while (entry != null && transaction == null);
 					}
 				} else if (direction == GotoDirection.PREV) {
@@ -883,11 +934,11 @@ public class WaveformView implements IWaveformView {
 						}
 					}
 					if (transaction == null) {
-						Entry<Long, IEvent[]> entry = selectedWaveform.waveform.getEvents()
+						EventEntry entry = selectedWaveform.waveform.getEvents()
 								.lowerEntry(currentTxSelection.getBeginTime());
 						if (entry != null)
 							do {
-								for (IEvent evt : Lists.reverse(Arrays.asList(entry.getValue()))) {
+								for (IEvent evt : Lists.reverse(Arrays.asList(entry.events))) {
 									if (evt instanceof ITxEvent && (evt.getKind() == EventKind.BEGIN
 											|| evt.getKind() == EventKind.SINGLE)) {
 										transaction = ((ITxEvent) evt).getTransaction();
@@ -895,7 +946,7 @@ public class WaveformView implements IWaveformView {
 									}
 								}
 								if (transaction == null)
-									entry = selectedWaveform.waveform.getEvents().lowerEntry(entry.getKey());
+									entry = selectedWaveform.waveform.getEvents().lowerEntry(entry.timestamp);
 							} while (entry != null && transaction == null);
 					}
 				}
@@ -958,14 +1009,14 @@ public class WaveformView implements IWaveformView {
 			return;
 		TrackEntry sel = currentWaveformSelection.get(0);
 		long time = getCursorTime();
-		NavigableMap<Long, ?> map = null;
+		IEventList map = null;
 		if (sel.waveform.getType() == WaveformType.TRANSACTION || sel.waveform.getType() == WaveformType.SIGNAL) {
 			map = sel.waveform.getEvents();
 		}
 		if (map != null) {
-			Entry<Long, ?> entry = direction == GotoDirection.PREV ? map.lowerEntry(time) : map.higherEntry(time);
+			EventEntry entry = direction == GotoDirection.PREV ? map.lowerEntry(time) : map.higherEntry(time);
 			if (entry != null) {
-				time = entry.getKey();
+				time = entry.timestamp;
 				setCursorTime(time);
 				waveformCanvas.reveal(time);
 				waveformCanvas.redraw();
@@ -1114,16 +1165,6 @@ public class WaveformView implements IWaveformView {
 		this.waveformCanvas.setHighliteRelation(relationType);
 	}
 
-	/*
-	 * (non-Javadoc)
-	 * 
-	 * @see com.minres.scviewer.database.swt.IWaveformPanel#getMaxTime()
-	 */
-	@Override
-	public long getMaxTime() {
-		return waveformCanvas.getMaxTime();
-	}
-
 	/*
 	 * (non-Javadoc)
 	 * 
@@ -1134,27 +1175,6 @@ public class WaveformView implements IWaveformView {
 		this.waveformCanvas.setMaxTime(maxTime);
 	}
 
-	/*
-	 * (non-Javadoc)
-	 * 
-	 * @see com.minres.scviewer.database.swt.IWaveformPanel#setZoomLevel(int)
-	 */
-	@Override
-	public void setZoomLevel(int scale) {
-		waveformCanvas.setZoomLevel(scale);
-		waveformCanvas.reveal(getCursorTime());
-	}
-
-	/*
-	 * (non-Javadoc)
-	 * 
-	 * @see com.minres.scviewer.database.swt.IWaveformPanel#getZoomLevel()
-	 */
-	@Override
-	public int getZoomLevel() {
-		return waveformCanvas.getZoomLevel();
-	}
-
 	/*
 	 * (non-Javadoc)
 	 * 
@@ -1173,10 +1193,10 @@ public class WaveformView implements IWaveformView {
 	 * @see com.minres.scviewer.database.swt.IWaveformPanel#setMarkerTime(long, int)
 	 */
 	@Override
-	public void setMarkerTime(long time, int index) {
+	public void setMarkerTime(int marker, long time) {
-		if (waveformCanvas.getCursorPainters().size() > index + 1) {
+		if (waveformCanvas.getCursorPainters().size() > marker + 1) {
-			final Long oldVal = waveformCanvas.getCursorPainters().get(1 + index).getTime();
+			final Long oldVal = waveformCanvas.getCursorPainters().get(1 + marker).getTime();
-			waveformCanvas.getCursorPainters().get(1 + index).setTime(time);
+			waveformCanvas.getCursorPainters().get(1 + marker).setTime(time);
 			pcs.firePropertyChange(MARKER_PROPERTY, oldVal, time);
 		}
 	}
@@ -1197,7 +1217,7 @@ public class WaveformView implements IWaveformView {
 	 * @see com.minres.scviewer.database.swt.IWaveformPanel#getActMarkerTime()
 	 */
 	@Override
-	public int getSelectedMarkerId() {
+	public int getSelectedMarker() {
 		return selectedMarker;
 	}
 
@@ -1449,58 +1469,32 @@ public class WaveformView implements IWaveformView {
 		return this.pcs.hasListeners(propertyName);
 	}
 
-	/*
-	 * (non-Javadoc)
-	 * 
-	 * @see com.minres.scviewer.database.swt.IWaveformPanel#getScaledTime(long)
-	 */
-	@Override
-	public String getScaledTime(long time) {
-		StringBuilder sb = new StringBuilder();
-		double dTime = time;
-		double scaledTime = dTime / waveformCanvas.getScaleFactorPow10();
-		return sb.append(df.format(scaledTime)).append(waveformCanvas.getUnitStr()).toString();
-	}
-
-	/*
-	 * (non-Javadoc)
-	 * 
-	 * @see com.minres.scviewer.database.swt.IWaveformPanel#getZoomLevels()
-	 */
-	@Override
-	public String[] getZoomLevels() {
-		String[] res = new String[Constants.UNIT_MULTIPLIER.length * Constants.UNIT_STRING.length];
-		int index = 0;
-		for (String unit : Constants.UNIT_STRING) {
-			for (int factor : Constants.UNIT_MULTIPLIER) {
-				res[index++] = Integer.toString(factor) + unit;
-			}
-		}
-		return res;
-	}
-
-	@Override
-	public long getBaselineTime() {
-		return -waveformCanvas.getScaleFactorPow10() * waveformCanvas.getOrigin().x;
-	}
-
-	@Override
-	public void setBaselineTime(Long time) {
-		Point origin = waveformCanvas.getOrigin();
-		origin.x = (int) (-time / waveformCanvas.getScaleFactorPow10());
-		waveformCanvas.setOrigin(origin);
-	}
-
 	@Override
 	public void scrollHorizontal(int percent) {
 		if (percent < -100)
 			percent = -100;
 		if (percent > 100)
 			percent = 100;
-		int diff = (waveformCanvas.getWidth() * percent) / 100;
+		long minTime = waveformCanvas.getMinVisibleTime();
-		Point o = waveformCanvas.getOrigin();
+		long duration = waveformCanvas.getMaxVisibleTime()-minTime;
-		waveformCanvas.setOrigin(o.x - diff, o.y);
+		long diff = (duration * percent) / 100;
-		waveformCanvas.redraw();
+		waveformCanvas.setMinVisibleTime(minTime+diff);
+	}
+
+	@Override
+	public void scrollTo(int pos) {
+		long time = 0;
+		switch(pos) {
+		case IWaveformView.CURSOR_POS:
+			time = getCursorTime();
+			break;
+		case IWaveformView.MARKER_POS:
+			time = getMarkerTime(selectedMarker);
+			break;
+		default:
+			break;
+		}
+		waveformCanvas.centerAt(time);
 	}
 
 	public void asyncUpdate(Widget widget) {
@@ -1533,4 +1527,12 @@ public class WaveformView implements IWaveformView {
 		return e;
 	}
 	
+	public boolean waveformsContainsTx() {
+		return  streams.stream().filter(e -> e.waveform.getType() == WaveformType.TRANSACTION).findFirst().isPresent();
+	}
+
+	@Override
+	public IWaveformZoom getWaveformZoom() {
+		return waveformCanvas;
+	}
 }

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/slider/ActionTimer.java

@@ -0,0 +1,35 @@
+package com.minres.scviewer.database.ui.swt.internal.slider;
+
+import org.eclipse.swt.widgets.Display;
+
+public class ActionTimer implements Runnable {
+
+	public static final int INITIAL_DELAY = 300;
+	public static final int FAST_DELAY = 50;
+
+	private final Display display;
+	private final TimerAction timerAction;
+
+	public interface TimerAction extends Runnable {
+		boolean isEnabled();
+	}
+
+	public ActionTimer( TimerAction timerAction, Display display ) {
+		this.display = display;
+		this.timerAction = timerAction;
+	}
+
+	public void activate() {
+		if( timerAction.isEnabled() ) {
+			display.timerExec( INITIAL_DELAY, this );
+		}
+	}
+
+	@Override
+	public void run() {
+		if( timerAction.isEnabled() ) {
+			timerAction.run();
+			display.timerExec( FAST_DELAY, this );
+		}
+	}
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/slider/ImageButton.java

@@ -0,0 +1,192 @@
+package com.minres.scviewer.database.ui.swt.internal.slider;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.SWTException;
+import org.eclipse.swt.events.MouseAdapter;
+import org.eclipse.swt.events.MouseEvent;
+import org.eclipse.swt.events.MouseTrackAdapter;
+import org.eclipse.swt.events.SelectionListener;
+import org.eclipse.swt.graphics.GC;
+import org.eclipse.swt.graphics.Image;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Event;
+
+public class ImageButton extends Composite
+{
+	private Image   hoverImage;
+	private Image   normalImage;
+	private Image   pressedImage;
+	private Image   disabledImage;
+	private int     width;
+	private int     height;
+	private boolean hover;
+	private boolean pressed;
+	private boolean autoFire;
+	private ActionTimer actionTimer;
+	private ActionTimer.TimerAction timerAction;
+
+	public ImageButton(Composite parent, int style)	{
+		super(parent, style);		
+		timerAction = new ActionTimer.TimerAction() {
+			@Override
+			public void run() {
+				notifyListeners();
+			}
+			@Override
+			public boolean isEnabled() {
+				return pressed;
+			}
+		};
+		actionTimer = new ActionTimer(timerAction, this.getDisplay() );
+		addListener(SWT.Dispose, event ->  {
+			if (hoverImage != null)	hoverImage.dispose();
+			if (normalImage != null) normalImage.dispose();
+			if (pressedImage != null) pressedImage.dispose();
+			if (disabledImage != null) disabledImage.dispose();
+		});
+		addListener(SWT.Paint, event -> {
+			paintControl(event);
+		});
+		addMouseTrackListener(new MouseTrackAdapter() {
+			public void mouseEnter(MouseEvent arg0) {
+				if(isEnabled()) {
+					hover=true;
+					redraw();
+				}
+			}
+			public void mouseExit(MouseEvent arg0) {
+				if(isEnabled()) {
+					hover=false;
+					redraw();
+				}
+			}
+		});
+		addMouseListener(new MouseAdapter() {
+			@Override
+			public void mouseDown(MouseEvent e) {
+				if(isEnabled()) {
+					pressed=true;
+					notifyListeners();
+					if(autoFire) actionTimer.activate();
+					redraw();
+				}
+			}
+
+			@Override
+			public void mouseUp(MouseEvent e) {
+				pressed=false;
+				redraw();
+			}
+		});
+	}
+
+	private void paintControl(Event event) { 
+		GC gc = event.gc;
+		if (hoverImage != null)	{
+			if(pressed)
+				gc.drawImage(pressedImage, 1, 1);
+			else if(hover) {
+				gc.drawImage(hoverImage, 1, 1);
+			} else if(isEnabled()){
+				gc.drawImage(normalImage, 1, 1);
+			} else
+				gc.drawImage(disabledImage, 1, 1);
+		}
+	}
+
+	public void setImage(Image[] imgs) {
+		assert(imgs.length==3);
+		Display d = Display.getDefault();
+		normalImage =   new Image(d, imgs[0], SWT.IMAGE_COPY);
+		hoverImage =    new Image(d, imgs[1], SWT.IMAGE_COPY);
+		pressedImage =  new Image(d, imgs[2], SWT.IMAGE_COPY);
+		disabledImage = new Image(d, imgs[0], SWT.IMAGE_DISABLE);
+		width = imgs[0].getBounds().width;
+		height = imgs[0].getBounds().height;
+		redraw();
+	}
+
+	@Override
+	public Point computeSize(int wHint, int hHint, boolean changed) {
+		int overallWidth = width;
+		int overallHeight = height;
+		if (wHint != SWT.DEFAULT && wHint < overallWidth)
+			overallWidth = wHint;
+		if (hHint != SWT.DEFAULT && hHint < overallHeight)
+			overallHeight = hHint;
+		return new Point(overallWidth + 2, overallHeight + 2);
+	}
+	/**
+	 * Adds the listener to the collection of listeners who will be notified when
+	 * the user changes the receiver's value, by sending it one of the messages
+	 * defined in the <code>SelectionListener</code> interface.
+	 * <p>
+	 * <code>widgetSelected</code> is called when the user changes the receiver's
+	 * value. <code>widgetDefaultSelected</code> is not called.
+	 * </p>
+	 *
+	 * @param listener the listener which should be notified
+	 *
+	 * @exception IllegalArgumentException
+	 *                <ul>
+	 *                <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+	 *                </ul>
+	 * @exception SWTException
+	 *                <ul>
+	 *                <li>ERROR_WIDGET_DISPOSED - if the receiver has been
+	 *                disposed</li>
+	 *                <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
+	 *                thread that created the receiver</li>
+	 *                </ul>
+	 *
+	 * @see SelectionListener
+	 * @see #removeSelectionListener
+	 */
+	public void addSelectionListener(final SelectionListener listener) {
+		checkWidget();
+		SelectionListenerUtil.addSelectionListener(this, listener);
+	}
+
+	/**
+	 * Removes the listener from the collection of listeners who will be notified
+	 * when the user changes the receiver's value.
+	 *
+	 * @param listener the listener which should no longer be notified
+	 *
+	 * @exception IllegalArgumentException
+	 *                <ul>
+	 *                <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+	 *                </ul>
+	 * @exception SWTException
+	 *                <ul>
+	 *                <li>ERROR_WIDGET_DISPOSED - if the receiver has been
+	 *                disposed</li>
+	 *                <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
+	 *                thread that created the receiver</li>
+	 *                </ul>
+	 *
+	 * @see SelectionListener
+	 * @see #addSelectionListener
+	 */
+	public void removeSelectionListener(final SelectionListener listener) {
+		checkWidget();
+		SelectionListenerUtil.removeSelectionListener(this, listener);
+	}
+
+	private void notifyListeners() {
+		Event e = new Event();
+		e.widget=this;
+		e.type=SWT.Selection;
+		SelectionListenerUtil.fireSelectionListeners(this,e);
+	}
+
+	public boolean isAutoFire() {
+		return autoFire;
+	}
+
+	public void setAutoFire(boolean autoFire) {
+		this.autoFire = autoFire;
+	}
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/slider/RangeSlider.java

@@ -0,0 +1,631 @@
+package com.minres.scviewer.database.ui.swt.internal.slider;
+
+import java.text.Format;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.MouseEvent;
+import org.eclipse.swt.events.MouseTrackAdapter;
+import org.eclipse.swt.events.PaintEvent;
+import org.eclipse.swt.events.SelectionListener;
+import org.eclipse.swt.graphics.GC;
+import org.eclipse.swt.graphics.Image;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.graphics.Rectangle;
+import org.eclipse.swt.widgets.Canvas;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Event;
+import org.eclipse.wb.swt.SWTResourceManager;
+
+public class RangeSlider extends Canvas {
+
+	private static final int NONE = 0;
+	private static final int UPPER = 1 << 0;
+	private static final int LOWER = 1 << 1;
+	private static final int BOTH = UPPER | LOWER;
+
+	private final int minHeight;
+	private final int markerWidth;
+	private final int thumbWidth = 0;
+	private final Image[] slider, sliderHover, sliderDrag;
+	
+	private int minimum;
+	private int maximum;
+	private int lowerValue;
+	private int upperValue;
+	
+	private int increment;
+	private int pageIncrement;
+	private int selectedElement;
+	private boolean upperHover, lowerHover;
+	private int previousUpperValue, previousLowerValue;
+	private int startDragUpperValue, startDragLowerValue;
+	private Point startDragPoint;
+	private final boolean isFullSelection=false;
+	private final boolean isHighQuality;
+	private final boolean isOn;
+	private Format toolTipFormatter;
+	private String clientToolTipText;
+	private StringBuffer toolTip;
+	private Point coordUpper;
+	private Point coordLower;
+
+	public RangeSlider(final Composite parent, final int style) {
+		super(parent, SWT.DOUBLE_BUFFERED | ((style & SWT.BORDER) == SWT.BORDER ? SWT.BORDER : SWT.NONE));
+		slider = new Image[] {
+				SWTResourceManager.getImage(this.getClass(), "marker_l.png"),
+				SWTResourceManager.getImage(this.getClass(), "marker_r.png")};
+		sliderHover = new Image[] {
+				SWTResourceManager.getImage(this.getClass(), "marker_l_hover.png"),
+				SWTResourceManager.getImage(this.getClass(), "marker_r_hover.png")};
+		sliderDrag = new Image[] {
+				SWTResourceManager.getImage(this.getClass(), "marker_l_pressed.png"),
+				SWTResourceManager.getImage(this.getClass(), "marker_r_pressed.png")};
+		Rectangle imgSize = slider[0].getBounds();
+		minHeight =imgSize.height+2;
+		markerWidth = imgSize.width;
+		minimum = lowerValue = 0;
+		maximum = upperValue = 100;
+		increment = 1;
+		pageIncrement = 10;
+		isHighQuality = (style & SWT.HIGH) == SWT.HIGH;
+		isOn = (style & SWT.ON) == SWT.ON;
+		selectedElement = NONE;
+
+		addMouseListeners();
+		addListener(SWT.Resize, event -> {
+		});
+		addListener(SWT.KeyDown, event -> {
+			handleKeyDown(event);
+		});
+		addPaintListener(event -> {
+			drawWidget(event);
+		});
+	}
+
+	@Override
+	public int getStyle() {
+		return super.getStyle() | //
+				(isOn ? SWT.ON : SWT.NONE) | //
+				(isFullSelection ? SWT.CONTROL : SWT.NONE) | //
+				(isHighQuality ? SWT.HIGH : SWT.NONE);
+	}
+
+	private void addMouseListeners() {
+		addListener(SWT.MouseDown, e -> {
+			if (e.button == 1 || e.button == 2) {
+				selectKnobs(e);
+				selectedElement = (lowerHover ? LOWER : NONE) | (upperHover ? UPPER : NONE);
+				if (selectedElement!=NONE) {
+					if((e.stateMask & SWT.CTRL)==0 && e.button != 2)
+						selectedElement=BOTH;
+					startDragLowerValue = previousLowerValue = lowerValue;
+					startDragUpperValue = previousUpperValue = upperValue;
+					startDragPoint = new Point(e.x, e.y);
+				}
+			}
+		});
+
+		addListener(SWT.MouseUp, e -> {
+			if (selectedElement!=NONE) {
+				startDragPoint = null;
+				validateNewValues(e);
+				super.setToolTipText(clientToolTipText);
+				selectedElement=NONE;
+				redraw();
+			} else if (e.button == 1) {
+				if(e.x<coordLower.x) {
+					translateValues(-pageIncrement);
+					validateNewValues(e);
+					redraw();
+				} else if(e.x>coordUpper.x+markerWidth) {
+					translateValues(pageIncrement);
+					validateNewValues(e);
+					redraw();
+				}
+			}
+		});
+
+		addListener(SWT.MouseDoubleClick, event -> {
+			handleMouseDoubleClick(event);
+		});
+
+		addListener(SWT.MouseMove, event -> {
+			handleMouseMove(event);
+		});
+
+		addListener(SWT.MouseWheel, event -> {
+			handleMouseWheel(event);
+		});
+
+		addListener(SWT.MouseHover, event -> {
+			handleMouseHover(event);
+		});
+
+		addMouseTrackListener(new MouseTrackAdapter() {
+			public void mouseExit(MouseEvent event) {
+				lowerHover = upperHover = false;
+				redraw();
+			}
+		});
+
+	}
+
+	private void validateNewValues(final Event e) {
+		if (upperValue != previousUpperValue || lowerValue != previousLowerValue) {
+			if (!SelectionListenerUtil.fireSelectionListeners(this,e)) {
+				upperValue = previousUpperValue;
+				lowerValue = previousLowerValue;
+			}
+			previousUpperValue = upperValue;
+			previousLowerValue = lowerValue;
+			increment = Math.max(1,  (upperValue-lowerValue)/100);
+			pageIncrement = Math.max(1, (upperValue-lowerValue)/2);
+			redraw();
+		}
+	}
+
+	private boolean busy = false;
+	
+	private void handleMouseMove(final Event e) {
+		if (selectedElement==NONE) {
+			final boolean wasUpper = upperHover;
+			final boolean wasLower = lowerHover;
+			selectKnobs(e);
+			if (wasUpper != upperHover || wasLower != lowerHover) {
+				redraw();
+			}
+		} else { // dragInProgress
+			final int x = e.x;
+			if (selectedElement == BOTH) {
+				final int diff = (int) ((startDragPoint.x - x) / computePixelSizeForSlider()) + minimum;
+				int newUpper = startDragUpperValue - diff;
+				int newLower = startDragLowerValue - diff;
+				if (newUpper > maximum) {
+					newUpper = maximum;
+					newLower = maximum - (startDragUpperValue - startDragLowerValue);
+				} else if (newLower < minimum) {
+					newLower = minimum;
+					newUpper = minimum + startDragUpperValue - startDragLowerValue;
+				}
+				upperValue = newUpper;
+				lowerValue = newLower;
+				handleToolTip(lowerValue, upperValue);
+			} else if (selectedElement == UPPER) {
+				upperValue = (int) Math.round((double)(x - markerWidth) / computePixelSizeForSlider()) + minimum;
+				checkUpperValue();
+				handleToolTip(upperValue);
+			} else if (selectedElement == LOWER){
+				lowerValue = (int) Math.round((double)(x - markerWidth) / computePixelSizeForSlider()) + minimum;
+				checkLowerValue();
+				handleToolTip(lowerValue);
+			}
+			if (isOn && !busy) {
+				validateNewValues(e);
+				busy=true;
+				getDisplay().timerExec(50, ()->{busy=false;});
+			} else {
+				redraw();
+			}
+		}
+	}
+
+	private boolean isBetweenKnobs(int x, int y) {
+		return x < coordUpper.x && x > coordLower.x && y >= minHeight/3 && y <= minHeight/3 + getClientArea().height - 2*minHeight/3;
+	}
+
+	private void selectKnobs(final Event e) {
+		if (coordLower != null) {
+			final Rectangle imgBounds = slider[0].getBounds();
+			final int x = e.x, y = e.y;
+			lowerHover = x >= coordLower.x && x <= coordLower.x + imgBounds.width && y >= coordLower.y && y <= coordLower.y + imgBounds.height;
+			upperHover = ((e.stateMask & (SWT.CTRL | SWT.SHIFT)) != 0 || !lowerHover) && //
+					x >= coordUpper.x && x <= coordUpper.x + imgBounds.width && //
+					y >= coordUpper.y && y <= coordUpper.y + imgBounds.height;
+					lowerHover &= (e.stateMask & SWT.CTRL) != 0 || !upperHover;
+			if (!lowerHover && !upperHover && isBetweenKnobs(x, y)) {
+				lowerHover = upperHover = true;
+			}		
+		}
+	}
+
+	private int getCursorValue(int x, int y) {
+		int value = -1;
+		final Rectangle clientArea = getClientArea();
+		if (x < clientArea.width - 2*markerWidth && x >= markerWidth && y >= minHeight/3 && y <=  clientArea.height - minHeight/3) {
+			value = (int) Math.round((x - 9d) / computePixelSizeForSlider()) + minimum;
+		}
+		return value;
+	}
+
+	private void handleMouseDoubleClick(final Event e) {
+		final int value = getCursorValue(e.x, e.y);
+		if (value >= 0) {
+			if (value > upperValue) {
+				translateValues(value-upperValue);
+			} else if (value < lowerValue) {
+				translateValues(value-lowerValue);
+			}
+			validateNewValues(e);
+		}
+	}
+
+	private void handleToolTip(int... values) {
+		if (toolTipFormatter != null) {
+			try {
+				if (values.length == 1) {
+					toolTip.setLength(0);
+					toolTipFormatter.format(values[0], toolTip, null);
+					super.setToolTipText(toolTip.toString());
+				} else if (values.length == 2) {
+					toolTip.setLength(0);
+					toolTipFormatter.format(values[0], toolTip, null);
+					toolTip.append(" \u2194 "); // LEFT RIGHT ARROW
+					toolTipFormatter.format(values[1], toolTip, null);
+					super.setToolTipText(toolTip.toString());
+				}
+			} catch (final IllegalArgumentException ex) {
+				super.setToolTipText(clientToolTipText);
+			}
+		}
+	}
+
+	private void handleMouseHover(final Event e) {
+		if (selectedElement!=NONE && toolTipFormatter != null) {
+			final int value = getCursorValue(e.x, e.y);
+			if (value >= 0) {
+				try {
+					toolTip.setLength(0);
+					toolTipFormatter.format(value, toolTip, null);
+					super.setToolTipText(toolTip.toString());
+				} catch (final IllegalArgumentException ex) {
+					super.setToolTipText(clientToolTipText);
+				}
+			} else {
+				super.setToolTipText(clientToolTipText);
+			}
+		}
+	}
+
+	public void setToolTipFormatter(Format formatter) {
+		toolTip = formatter != null ? new StringBuffer() : null;
+		toolTipFormatter = formatter;
+	}
+
+	@Override
+	public void setToolTipText(String string) {
+		super.setToolTipText(clientToolTipText = string);
+	}
+
+	private void handleMouseWheel(final Event e) {
+		previousLowerValue = lowerValue;
+		previousUpperValue = upperValue;
+		final int amount = Math.max(1, ((e.stateMask & SWT.SHIFT) != 0 ? (upperValue-lowerValue)/6 : (upperValue-lowerValue)/15));
+		if ((e.stateMask&SWT.CTRL)==0) {
+			int newLower = lowerValue + e.count * amount;
+			int newUpper = upperValue + e.count * amount;
+			if (newUpper > maximum) {
+				newUpper = maximum;
+				newLower = maximum - (upperValue - lowerValue);
+			} else if (newLower < minimum) {
+				newLower = minimum;
+				newUpper = minimum + upperValue - lowerValue;
+			}
+			upperValue = newUpper;
+			lowerValue = newLower;
+		} else {
+			int newLower = lowerValue + e.count * amount/2;
+			int newUpper = upperValue - e.count * amount/2;
+			int dist = newUpper - newLower;
+			if (newUpper > maximum) {
+				newUpper = maximum;
+				newLower = maximum - dist;
+			} else if (newLower < minimum) {
+				newLower = minimum;
+				newUpper = minimum + dist;
+			}
+			if(newUpper<=newLower) {
+				newLower=lowerValue + (upperValue - lowerValue)/2;
+				newUpper=newLower+1;
+			}
+			upperValue = newUpper;
+			lowerValue = newLower;
+		}
+		validateNewValues(e);
+		e.doit = false; // we are consuming this event
+	}
+
+	private void checkLowerValue() {
+		if (lowerValue < minimum) {
+			lowerValue = minimum;
+		} else if (lowerValue > (upperValue-thumbWidth)) {
+			lowerValue = (upperValue-thumbWidth);
+		}
+	}
+
+	private void checkUpperValue() {
+		if (upperValue > maximum) {
+			upperValue = maximum;
+		} else if (upperValue < (lowerValue+thumbWidth)) {
+			upperValue = lowerValue+thumbWidth;
+		}
+	}
+
+	private float computePixelSizeForSlider() {
+		return (getClientArea().width - 2.0f*markerWidth) / (maximum - minimum);
+	}
+
+	private void drawWidget(final PaintEvent e) {
+		final Rectangle rect = getClientArea();
+		if (rect.width == 0 || rect.height == 0) {
+			return;
+		}
+		e.gc.setAdvanced(true);
+		e.gc.setAntialias(SWT.ON);
+		drawBackground(e.gc);
+		if (lowerHover || (selectedElement & LOWER) != 0) {
+			coordUpper = drawMarker(e.gc, upperValue, true);
+			coordLower = drawMarker(e.gc, lowerValue, false);
+		} else {
+			coordLower = drawMarker(e.gc, lowerValue, false);
+			coordUpper = drawMarker(e.gc, upperValue, true);
+		}
+	}
+
+	private void drawBackground(final GC gc) {
+		final Rectangle clientArea = getClientArea();
+		gc.setBackground(getBackground());
+		gc.fillRectangle(clientArea);
+		if (isEnabled()) {
+			gc.setForeground(getForeground());
+		} else {
+			gc.setForeground(getDisplay().getSystemColor(SWT.COLOR_GRAY));
+		}
+		gc.drawRoundRectangle(markerWidth, minHeight/3, clientArea.width - 2*markerWidth, clientArea.height -  2*minHeight/3, 3, 3);
+
+		final float pixelSize = computePixelSizeForSlider();
+		final int startX = (int) (pixelSize * lowerValue);
+		final int endX = (int) (pixelSize * upperValue);
+		if (isEnabled()) {
+			gc.setBackground(getForeground());
+		} else {
+			gc.setBackground(getDisplay().getSystemColor(SWT.COLOR_GRAY));
+		}
+		gc.fillRectangle(markerWidth+startX, minHeight/3, endX - startX, clientArea.height - 2*minHeight/3);
+
+	}
+
+	private Point drawMarker(final GC gc, final int value, final boolean upper) {
+		final float pixelSize = computePixelSizeForSlider();
+		int x = (int) (pixelSize * value);
+		final int idx = upper?1:0;
+		Image image;
+		if (upper) {
+			if (upperHover) {
+				image = (selectedElement & UPPER) != 0 ? sliderDrag[idx] : sliderHover[idx];
+			} else {
+				image = slider[idx];
+			}
+		} else {
+			if (lowerHover) {
+				image = (selectedElement & LOWER) != 0 ? sliderDrag[idx] : sliderHover[idx];
+			} else {
+				image = slider[idx];
+			}
+		}
+		if(upper)
+			x+=slider[idx].getBounds().width;
+		if (isEnabled()) {
+			gc.drawImage(image, x, getClientArea().height / 2 - slider[idx].getBounds().height / 2);
+		} else {
+			final Image temp = new Image(getDisplay(), image, SWT.IMAGE_DISABLE);
+			gc.drawImage(temp, x, getClientArea().height / 2 - slider[idx].getBounds().height / 2);
+			temp.dispose();
+		}
+		return new Point(x, getClientArea().height / 2 - slider[idx].getBounds().height / 2);
+	}
+
+	private void moveCursorPosition(int xDelta, int yDelta) {
+		final Point cursorPosition = getDisplay().getCursorLocation();
+		cursorPosition.x += xDelta;
+		cursorPosition.y += yDelta;
+		getDisplay().setCursorLocation(cursorPosition);
+	}
+
+	private void handleKeyDown(final Event event) {
+		int accelerator = (event.stateMask & SWT.SHIFT) != 0 ? 10 : (event.stateMask & SWT.CTRL) != 0 ? 2 : 1;
+		if (selectedElement != NONE) {
+			switch (event.keyCode) {
+			case SWT.ESC:
+				startDragPoint = null;
+				upperValue = startDragUpperValue;
+				lowerValue = startDragLowerValue;
+				validateNewValues(event);
+				selectedElement = NONE;
+				if (!isOn) {
+					redraw();
+				}
+				event.doit = false;
+				break;
+			case SWT.ARROW_UP:
+				accelerator = -accelerator;
+			case SWT.ARROW_LEFT:
+				moveCursorPosition(-accelerator, 0);
+				event.doit = false;
+				break;
+			case SWT.ARROW_DOWN:
+				accelerator = -accelerator;
+			case SWT.ARROW_RIGHT:
+				moveCursorPosition(accelerator, 0);
+				event.doit = false;
+				break;
+			}
+			return;
+		}
+		previousLowerValue = lowerValue;
+		previousUpperValue = upperValue;
+
+		switch (event.keyCode) {
+		case SWT.HOME:
+			if ((event.stateMask & (SWT.SHIFT| SWT.CTRL)) == 0) {
+				upperValue = minimum + upperValue - lowerValue;
+				lowerValue = minimum;
+			}
+			break;
+		case SWT.END:
+			if ((event.stateMask & (SWT.SHIFT| SWT.CTRL)) == 0) {
+				lowerValue = maximum - (upperValue - lowerValue);
+				upperValue = maximum;
+			}
+			break;
+		case SWT.PAGE_UP:
+			translateValues(-accelerator * pageIncrement);
+			break;
+		case SWT.PAGE_DOWN:
+			translateValues( accelerator * pageIncrement);
+			break;
+		case SWT.ARROW_DOWN:
+		case SWT.ARROW_RIGHT:
+			translateValues( accelerator * increment);
+			break;
+		case SWT.ARROW_UP:
+		case SWT.ARROW_LEFT:
+			translateValues(-accelerator * increment);
+			break;
+		}
+		if (previousLowerValue != lowerValue || previousUpperValue != upperValue) {
+			checkLowerValue();
+			checkUpperValue();
+			validateNewValues(event);
+		}
+	}
+
+	private void translateValues(int amount) {
+		int newLower = lowerValue + amount;
+		int newUpper = upperValue + amount;
+		if (newUpper > maximum) {
+			newUpper = maximum;
+			newLower = maximum - (upperValue - lowerValue);
+		} else if (newLower < minimum) {
+			newLower = minimum;
+			newUpper = minimum + upperValue - lowerValue;
+		}
+		upperValue = newUpper;
+		lowerValue = newLower;
+	}
+
+	public void addSelectionListener(final SelectionListener listener) {
+		checkWidget();
+		SelectionListenerUtil.addSelectionListener(this, listener);
+	}
+
+	public void removeSelectionListener(final SelectionListener listener) {
+		checkWidget();
+		SelectionListenerUtil.removeSelectionListener(this, listener);
+	}
+
+	@Override
+	public Point computeSize(final int wHint, final int hHint, final boolean changed) {
+		checkWidget();
+		final int width = Math.max(2*markerWidth+100, wHint);
+		final int height = Math.max(minHeight, hHint);
+		return new Point(width, height);
+	}
+
+	public int[] getSelection() {
+		checkWidget();
+		return new int[] {lowerValue, upperValue};
+	}
+
+	public int getIncrement() {
+		checkWidget();
+		return increment;
+	}
+
+	public int getMaximum() {
+		checkWidget();
+		return maximum;
+	}
+
+	public int getMinimum() {
+		checkWidget();
+		return minimum;
+	}
+
+	public int getPageIncrement() {
+		checkWidget();
+		return pageIncrement;
+	}
+
+	public void setMaximum(final int value) {
+		setLimits(minimum, value);
+	}
+
+	public void setMinimum(final int value) {
+		setLimits(value, maximum);
+	}
+
+	public void setLimits(final int min, final int max) {
+		checkWidget();
+		if (min >= 0 && min < max && (min != minimum || max != maximum)) {
+			minimum = min;
+			maximum = max;
+			if (lowerValue < minimum) {
+				lowerValue = minimum;
+			} else if (lowerValue > maximum) {
+				lowerValue = maximum;
+			}
+			if (upperValue < minimum) {
+				upperValue = minimum;
+			} else if (upperValue > maximum) {
+				upperValue = maximum;
+			}
+			redraw();
+		}
+	}
+
+	public int getUpperValue() {
+		checkWidget();
+		return upperValue;
+	}
+
+	public void setUpperValue(final int value) {
+		setValues(lowerValue, value);
+	}
+
+	public int getLowerValue() {
+		checkWidget();
+		return lowerValue;
+	}
+
+	public void setLowerValue(final int value) {
+		setValues(value, upperValue);
+	}
+
+	public void setValues(final int[] values) {
+		if (values.length == 2) {
+			setValues(values[0], values[1]);
+		}
+	}
+
+	public void setValues(final int lowerValue, final int upperValue) {
+		setValues(lowerValue, upperValue, false);
+	}
+
+	public void setValues(final int lowerValue, final int upperValue, boolean update) {
+		checkWidget();
+		if (lowerValue <= upperValue && lowerValue >= minimum && upperValue <= maximum && (this.lowerValue != lowerValue || this.upperValue != upperValue)) {
+			this.lowerValue = lowerValue;
+			this.upperValue = upperValue;
+			if(update) {
+				Event e = new Event();
+				e.type=SWT.Selection;
+				e.doit=true;
+				validateNewValues(e);			
+			} else {
+				increment = Math.max(1,  (upperValue-lowerValue)/100);
+				pageIncrement = Math.max(1, (upperValue-lowerValue)/2);
+			}
+			redraw();
+		}
+	}
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/slider/ReflectionUtils.java

@@ -0,0 +1,48 @@
+package com.minres.scviewer.database.ui.swt.internal.slider;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+public class ReflectionUtils {
+	/**
+	 * Call a method using introspection (so ones can call a private or protected method)
+	 * @param object object on which the method will be called
+	 * @param methodName method name
+	 * @param args arguments of this method (can be null)
+	 * @return the value returned by this method (if this method returns a value)
+	 */
+	public static Object callMethod(final Object object, final String methodName, final Object... args) {
+		if (object == null) {
+			return null;
+		}
+		final Class<?>[] array = new Class<?>[args == null ? 0 : args.length];
+		int index = 0;
+		if (args != null) {
+			for (final Object o : args) {
+				array[index++] = o == null ? Object.class : o.getClass();
+			}
+		}
+
+		return callMethodWithClassType(object, methodName, array, args);
+	}
+
+	private static Object callMethodWithClassType(final Object object, final String methodName, final Class<?>[] array, final Object... args) {
+		Class<?> currentClass = object.getClass();
+		Method method = null;
+		while (currentClass != null) {
+			try {
+				method = currentClass.getDeclaredMethod(methodName, array);
+				break;
+			} catch (final NoSuchMethodException nsme) {
+				currentClass = currentClass.getSuperclass();
+			}
+		}
+
+		try {
+			method.setAccessible(true);
+			return method.invoke(object, args);
+		} catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
+			e.printStackTrace();
+			return null;
+		}
+	}
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/slider/SelectionListenerUtil.java

@@ -0,0 +1,74 @@
+package com.minres.scviewer.database.ui.swt.internal.slider;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.SelectionListener;
+import org.eclipse.swt.widgets.Control;
+import org.eclipse.swt.widgets.Event;
+import org.eclipse.swt.widgets.Listener;
+import org.eclipse.swt.widgets.TypedListener;
+
+public class SelectionListenerUtil {
+	/**
+	 * Add a <code>SelectionListener</code> to a given Control
+	 * 
+	 * @param control control on which the selection listener is added
+	 * @param listener listener to add
+	 */
+	public static void addSelectionListener(final Control control, final SelectionListener listener) {
+		if (listener == null) {
+			SWT.error(SWT.ERROR_NULL_ARGUMENT);
+		}
+		TypedListener typedListener = new TypedListener(listener);
+		control.addListener(SWT.Selection, typedListener);
+	}
+
+	/**
+	 * Remove a <code>SelectionListener</code> of a given Control
+	 * 
+	 * @param control control on which the selection listener is removed
+	 * @param listener listener to remove
+	 */
+	public static void removeSelectionListener(final Control control, final SelectionListener listener) {
+		if (listener == null) {
+			SWT.error(SWT.ERROR_NULL_ARGUMENT);
+		}
+		final Listener[] listeners = control.getListeners(SWT.Selection);
+		for (Listener l : listeners) {
+			if (l instanceof TypedListener) {
+				TypedListener typedListener = (TypedListener) l;
+				if (typedListener.getEventListener() == listener) {
+					ReflectionUtils.callMethod(control, "removeListener", SWT.Selection, ((TypedListener) l).getEventListener());
+					return;
+				}
+			}
+		}
+	}
+
+	/**
+	 * Fire the selection listeners of a given control
+	 *
+	 * @param control the control that fires the event
+	 * @param sourceEvent mouse event
+	 * @return true if the selection could be changed, false otherwise
+	 */
+	public static boolean fireSelectionListeners(final Control control, final Event sourceEvent) {
+		for (final Listener listener : control.getListeners(SWT.Selection)) {
+			final Event event = new Event();
+
+			event.button = sourceEvent==null?1:sourceEvent.button;
+			event.display = control.getDisplay();
+			event.item = null;
+			event.widget = control;
+			event.data = sourceEvent == null ? null : sourceEvent.data;
+			event.time = sourceEvent == null ? 0 : sourceEvent.time;
+			event.x = sourceEvent == null ? 0 : sourceEvent.x;
+			event.y = sourceEvent == null ? 0 : sourceEvent.y;
+			event.type = SWT.Selection;
+
+			listener.handleEvent(event);
+			if (!event.doit) {
+				return false;
+			}
+		}
+		return true;
+	}
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/internal/slider/ZoomBar.java

@@ -0,0 +1,127 @@
+package com.minres.scviewer.database.ui.swt.internal.slider;
+
+import java.text.Format;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.SelectionAdapter;
+import org.eclipse.swt.events.SelectionEvent;
+import org.eclipse.swt.events.SelectionListener;
+import org.eclipse.swt.graphics.Image;
+import org.eclipse.swt.layout.GridData;
+import org.eclipse.swt.layout.GridLayout;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.wb.swt.SWTResourceManager;
+
+public class ZoomBar extends Composite {
+	
+	static public interface IProvider {
+		ZoomBar getScrollBar();
+	}
+
+	final RangeSlider timeSlider;
+	final ImageButton leftButton;
+	final ImageButton rightButton;
+	/**
+	 * Create the composite.
+	 * @param parent
+	 * @param style
+	 */
+	public ZoomBar(Composite parent, int style) {
+		super(parent, SWT.NO_FOCUS);
+		GridLayout gridLayout = new GridLayout(3, false);
+		gridLayout.horizontalSpacing = 0;
+		gridLayout.verticalSpacing = 0;
+		gridLayout.marginWidth = 0;
+		gridLayout.marginHeight = 0;
+		setLayout(gridLayout);
+
+		leftButton = new ImageButton(this, SWT.NONE);
+		GridData gd_leftButton = new GridData(SWT.LEFT, SWT.CENTER, false, false, 1, 1);
+		gd_leftButton.widthHint=14;
+		gd_leftButton.heightHint=18;
+		leftButton.setLayoutData(gd_leftButton);
+		leftButton.setImage(new Image[] {
+				SWTResourceManager.getImage(this.getClass(), "arrow_left.png"),
+				SWTResourceManager.getImage(this.getClass(), "arrow_left_hover.png"),
+				SWTResourceManager.getImage(this.getClass(), "arrow_left_pressed.png")});
+		leftButton.setAutoFire(true);
+		
+		timeSlider = new RangeSlider(this, SWT.ON|SWT.HIGH|SWT.SMOOTH|SWT.CONTROL);
+		timeSlider.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
+
+		rightButton = new ImageButton(this, SWT.NONE);
+		GridData gd_rightButton = new GridData(SWT.LEFT, SWT.CENTER, false, false, 1, 1);
+		gd_rightButton.widthHint=18;
+		gd_rightButton.heightHint=18;
+		rightButton.setLayoutData(gd_rightButton);
+		rightButton.setImage(new Image[] {
+				SWTResourceManager.getImage(this.getClass(), "arrow_right.png"),
+				SWTResourceManager.getImage(this.getClass(), "arrow_right_hover.png"),
+				SWTResourceManager.getImage(this.getClass(), "arrow_right_pressed.png")});
+		rightButton.setAutoFire(true);
+		
+		leftButton.addSelectionListener(new SelectionAdapter() {
+			@Override
+			public void widgetSelected(SelectionEvent e) {
+				int[] value = timeSlider.getSelection();
+				int incr=timeSlider.getIncrement();
+				int lower = Math.max(timeSlider.getMinimum(), value[0]-incr);
+				timeSlider.setValues(lower, lower + (value[1]-value[0]), true);
+			}
+		});
+		rightButton.addSelectionListener(new SelectionAdapter() {
+			@Override
+			public void widgetSelected(SelectionEvent e) {
+				int[] value = timeSlider.getSelection();
+				int incr=timeSlider.getIncrement();
+				int upper = Math.min(timeSlider.getMaximum(), value[1]+incr);
+				timeSlider.setValues(upper - (value[1]-value[0]), upper, true);
+			}
+		});
+
+	}
+	@Override
+	public void setEnabled (boolean enabled) {
+		timeSlider.setEnabled(enabled);
+		leftButton.setEnabled(enabled);
+		rightButton.setEnabled(enabled);
+		super.setEnabled(enabled);
+		redraw();
+	}
+	public void setButtonsEnabled (boolean enabled) {
+		leftButton.setEnabled(enabled);
+		rightButton.setEnabled(enabled);
+		redraw();
+	}
+	public void setToolTipFormatter(Format formatter){
+		timeSlider.setToolTipFormatter(formatter);
+	}
+	public void setToolTipText(String string) {
+		timeSlider.setToolTipText(string);
+	}
+	public void setSelection(int sel) {
+		timeSlider.setLowerValue(sel);
+	}
+	public void setSelection(int[] sel) {
+		assert(sel.length==2);
+		timeSlider.setValues(sel[0], sel[1]);
+	}
+	public int[] getSelection() {
+		return timeSlider.getSelection();
+	}
+	public void addSelectionListener(SelectionListener selectionListener) {
+		timeSlider.addSelectionListener(selectionListener);	
+	}
+	public void setMinimum(int value) {
+		timeSlider.setMinimum(value);	
+	}
+	public void setMaximum(int value) {
+		timeSlider.setMaximum(value);	
+	}
+	public int getMaximum() {
+		return timeSlider.getMaximum();
+	}
+	public int getMinimum() {
+		return timeSlider.getMinimum();
+	}
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/sb/ActionScheduler.java

@@ -0,0 +1,18 @@
+package com.minres.scviewer.database.ui.swt.sb;
+
+import org.eclipse.swt.widgets.Display;
+
+public class ActionScheduler {
+
+  private final Display display;
+  private final Runnable action;
+
+  public ActionScheduler( Display display, Runnable action ) {
+    this.display = display;
+    this.action = action;
+  }
+
+  public void schedule( int delay ) {
+    display.timerExec( delay, action );
+  }
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/sb/ButtonClick.java

@@ -0,0 +1,45 @@
+package com.minres.scviewer.database.ui.swt.sb;
+
+import org.eclipse.swt.events.MouseEvent;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.widgets.Control;
+
+public class ButtonClick {
+
+  public static final int LEFT_BUTTON = 1;
+
+  private boolean armed;
+
+  public boolean isArmed() {
+    return armed;
+  }
+
+  public void arm( MouseEvent event ) {
+    if( event.button == LEFT_BUTTON ) {
+      armed = true;
+    }
+  }
+
+  public void disarm() {
+    armed = false;
+  }
+
+  public void trigger( MouseEvent event, Runnable action ) {
+    try {
+      doTrigger( event, action );
+    } finally {
+      disarm();
+    }
+  }
+
+  private void doTrigger( MouseEvent event, Runnable action ) {
+    if( armed && inRange( event ) ) {
+      action.run();
+    }
+  }
+
+  private static boolean inRange( MouseEvent event ) {
+    Point size = ( ( Control )event.widget ).getSize();
+    return event.x >= 0 && event.x <= size.x && event.y >= 0 && event.y <= size.y;
+  }
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/sb/ClickControl.java

@@ -0,0 +1,98 @@
+package com.minres.scviewer.database.ui.swt.sb;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.ControlAdapter;
+import org.eclipse.swt.events.ControlEvent;
+import org.eclipse.swt.events.MouseEvent;
+import org.eclipse.swt.events.MouseListener;
+import org.eclipse.swt.events.MouseTrackListener;
+import org.eclipse.swt.graphics.Color;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Label;
+
+
+class ClickControl extends ControlAdapter implements ViewComponent, MouseDownActionTimer.TimerAction, MouseListener, MouseTrackListener {
+
+  private final MouseDownActionTimer mouseDownActionTimer;
+  private final ClickAction clickAction;
+  private final ButtonClick buttonClick;
+  private final Label control;
+  private final ImageUpdate imageUpdate;
+
+  public interface ClickAction extends Runnable {
+    void setCoordinates( int x, int y );
+  }
+
+  ClickControl( Composite parent, ClickAction clickAction, int maxExtension  ) {
+    this.control = new Label( parent, SWT.NONE );
+    this.imageUpdate = new ImageUpdate( control, maxExtension );
+    this.buttonClick = new ButtonClick();
+    this.mouseDownActionTimer = new MouseDownActionTimer( this, buttonClick, control.getDisplay() );
+    this.clickAction = clickAction;
+    this.control.addMouseTrackListener( this );
+    this.control.addMouseListener( this );
+    this.control.addControlListener( this );
+  }
+
+  @Override
+  public void controlResized( ControlEvent event ) {
+    imageUpdate.update();
+  }
+
+  @Override
+  public Label getControl() {
+    return control;
+  }
+
+  @Override
+  public void mouseDown( MouseEvent event ) {
+    buttonClick.arm( event );
+    clickAction.setCoordinates( event.x, event.y );
+    mouseDownActionTimer.activate();
+  }
+
+  @Override
+  public void mouseUp( MouseEvent event ) {
+    buttonClick.trigger( event, clickAction );
+  }
+
+  @Override
+  public void run() {
+    clickAction.run();
+  }
+
+  @Override
+  public boolean isEnabled() {
+    return true;
+  }
+
+  @Override
+  public void mouseExit( MouseEvent event ) {
+    buttonClick.disarm();
+  }
+
+  void setForeground( Color color ) {
+    imageUpdate.setForeground( color );
+  }
+
+  Color getForeground() {
+    return imageUpdate.getForeground();
+  }
+
+  void setBackground( Color color ) {
+    imageUpdate.setBackground( color );
+  }
+
+  Color getBackground() {
+    return imageUpdate.getBackground();
+  }
+
+  @Override
+  public void mouseEnter( MouseEvent event ) {}
+
+  @Override
+  public void mouseHover( MouseEvent event ) {}
+
+  @Override
+  public void mouseDoubleClick( MouseEvent event ) {}
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/sb/ComponentDistribution.java

@@ -0,0 +1,105 @@
+package com.minres.scviewer.database.ui.swt.sb;
+
+import static java.lang.Math.max;
+
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+
+class ComponentDistribution {
+
+  private static final int MIN_DRAG_LENGTH = 17;
+
+  final int upFastLength;
+  final int dragStart;
+  final int dragLength;
+  final int downFastStart;
+  final int downFastLength;
+  final int downStart;
+  final int buttonLen;
+
+  ComponentDistribution( int buttonLen, int len, int range, int pos, int thumb ) {
+    int slideLen = slideLen( buttonLen, len );
+    int relDragLen = relDragLen( slideLen, range, thumb );
+    int minDragLength = max( MIN_DRAG_LENGTH, buttonLen );
+    int interval = interval( range, relDragLen, minDragLength );
+    this.dragLength = dragLen( minDragLength, relDragLen );
+    this.upFastLength = upFastLen( minDragLength, interval, pos, slideLen, relDragLen, dragLength );
+    this.downStart = downStart( buttonLen, len );
+    this.downFastStart = downFastStart( buttonLen, upFastLength, dragLength );
+    this.dragStart = dragStart( buttonLen, upFastLength );
+    this.downFastLength = downFastLen( minDragLength, interval, pos, slideLen, relDragLen, dragLength, upFastLength );
+    this.buttonLen = buttonLen;
+  }
+
+  private static int slideLen( int buttonLen, int len ) {
+    return len - buttonLen * 2;
+  }
+
+  private static int relDragLen( int slideLen, int range, int thumb ) {
+    return divide( slideLen * thumb, range );
+  }
+
+  private static int interval( int range, int relDragLen, int minDragLength ) {
+    int result = range;
+    if( useMinDragLen( minDragLength, relDragLen ) ) {
+      result += minDragLength - relDragLen / 2;
+    }
+    return result;
+  }
+
+  private static int dragLen( int buttonLen, int relDragLen   ) {
+    return max( relDragLen, buttonLen );
+  }
+
+  private static int upFastLen( int buttonLen, int range, int pos, int slideLen, int relDragLen, int dragLen ) {
+    int result = slideLen * pos / range;
+    if( useMinDragLen( buttonLen, relDragLen ) ) {
+      result -= divide( ( dragLen - relDragLen ) * pos, range );
+    }
+    return result;
+  }
+
+  private static int downStart( int buttonLen, int len ) {
+    return len - buttonLen;
+  }
+
+  private static int downFastStart( int buttonLen, int upFastLength, int dragLength ) {
+    return buttonLen + upFastLength + dragLength;
+  }
+
+  private static int dragStart( int buttonLen, int upFastLen ) {
+    return buttonLen + upFastLen;
+  }
+
+  private static int downFastLen(
+    int buttonLen, int range, int pos, int slideLen, int relDragLen, int dragLen, int upFastLen )
+  {
+    int result = divide( slideLen * ( range - pos ), range ) - dragLen;
+    if( useMinDragLen( buttonLen, relDragLen ) ) {
+      result += divide( ( dragLen - relDragLen ) * pos, range );
+    }
+    return adjustDownFastLen( result, slideLen, dragLen, upFastLen );
+  }
+
+  private static boolean useMinDragLen( int buttonLen, int relDragLen ) {
+    return relDragLen < buttonLen;
+  }
+
+  static int divide( int dividend, int divisor ) {
+    BigDecimal bigDividend = new BigDecimal( dividend );
+    BigDecimal bigDivisor = new BigDecimal( divisor );
+    return bigDividend .divide( bigDivisor, 0, RoundingMode.HALF_EVEN ) .intValue();
+  }
+
+  private static int adjustDownFastLen( int tentative, int slideLen, int dragLen, int upFastLen ) {
+    // TODO [fappel]: Without this there is a flickering of the downFast label of one pixel.
+    //                Check whether this can be resolved by better rounding or whatsoever.
+    int result = tentative;
+    if( slideLen < upFastLen + dragLen + result ) {
+      result--;
+    } else if( slideLen > upFastLen + dragLen + result ) {
+      result++;
+    }
+    return result;
+  }
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/sb/Decrementer.java

@@ -0,0 +1,24 @@
+package com.minres.scviewer.database.ui.swt.sb;
+
+import org.eclipse.swt.SWT;
+
+import com.minres.scviewer.database.ui.swt.sb.ClickControl.ClickAction;
+
+class Decrementer implements ClickAction {
+
+  private final FlatScrollBar scrollBar;
+
+  Decrementer( FlatScrollBar scrollBar ) {
+    this.scrollBar = scrollBar;
+  }
+
+  @Override
+  public void run() {
+    int selection = scrollBar.getSelection() - scrollBar.getIncrement();
+    scrollBar.setSelectionInternal( selection, SWT.ARROW_UP );
+  }
+
+  @Override
+  public void setCoordinates( int x, int y ) {
+  }
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/sb/Direction.java

@@ -0,0 +1,203 @@
+package com.minres.scviewer.database.ui.swt.sb;
+
+import static com.minres.scviewer.database.ui.swt.sb.FlatScrollBar.BAR_BREADTH;
+import static java.lang.Math.max;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.graphics.Rectangle;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
+
+enum Direction {
+
+  HORIZONTAL( SWT.HORIZONTAL ) {
+
+    @Override
+    protected void layout( FlatScrollBar scrollBar, int buttonLength  ) {
+      ComponentDistribution distribution = calculateComponentDistribution( scrollBar, buttonLength );
+      Rectangle[] componentBounds = calculateComponentBounds( distribution, scrollBar );
+      applyComponentBounds( scrollBar, componentBounds );
+    }
+
+    private ComponentDistribution calculateComponentDistribution( FlatScrollBar scrollBar, int buttonLength  ) {
+      return calculateComponentDistribution( scrollBar, buttonLength, getControlBounds( scrollBar ).width );
+    }
+
+    private Rectangle[] calculateComponentBounds( ComponentDistribution distribution, FlatScrollBar scrollBar ) {
+      int width = getControlBounds( scrollBar ).width;
+      int height = getControlBounds( scrollBar ).height - FlatScrollBar.BAR_BREADTH + 1;
+      int balance = getRoundingBalance( distribution, scrollBar );
+      return new Rectangle[] {
+        calcButtons( distribution, width, $( 0, CLEARANCE, distribution.buttonLen, height ) ),
+        $( distribution.buttonLen, CLEARANCE, distribution.upFastLength, height ),
+        calcDrag( distribution, $( distribution.dragStart, CLEARANCE, distribution.dragLength + balance, height ) ),
+        $( distribution.downFastStart, CLEARANCE, distribution.downFastLength - balance, height ),
+        calcButtons( distribution, width, $( distribution.downStart, CLEARANCE, distribution.buttonLen, height ) )
+      };
+    }
+
+    private Rectangle calcButtons( ComponentDistribution distribution, int length, Rectangle bounds ) {
+      Rectangle result = bounds;
+      if( length <= distribution.buttonLen* 2 ) {
+        int downStart = calcDownStartForSmallLength( bounds.x, length );
+        result = $( downStart, CLEARANCE, length / 2, bounds.height );
+      }
+      return result;
+    }
+
+    @Override
+    protected void setDefaultSize( Control control ) {
+      Point size = control.getSize();
+      control.setSize( size.x, FlatScrollBar.BAR_BREADTH );
+    }
+
+    @Override
+    protected Point computeSize( Composite composite, int wHint, int hHint, boolean changed ) {
+      int x = wHint == SWT.DEFAULT ? composite.getParent().getClientArea().width : wHint;
+      return new Point( x, FlatScrollBar.BAR_BREADTH );
+    }
+
+    @Override
+    protected void expand( Control control, int maxExpansion ) {
+      Rectangle bounds = control.getBounds();
+      int expand = expand( bounds.height, maxExpansion );
+      control.setBounds( bounds.x, bounds.y - expand, bounds.width, bounds.height + expand );
+    }
+  },
+
+  VERTICAL( SWT.VERTICAL ) {
+
+    @Override
+    protected void layout( FlatScrollBar scrollBar, int buttonLength ) {
+      ComponentDistribution calculation = calculateComponentDistribution( scrollBar, buttonLength );
+      applyComponentBounds( scrollBar, calculateComponentBounds( calculation, scrollBar ) );
+    }
+
+    private ComponentDistribution calculateComponentDistribution( FlatScrollBar scrollBar, int buttonLength ) {
+      return calculateComponentDistribution( scrollBar, buttonLength, getControlBounds( scrollBar ).height );
+    }
+
+    private Rectangle[] calculateComponentBounds( ComponentDistribution distribution, FlatScrollBar scrollBar ) {
+      int width = getControlBounds( scrollBar ).width - FlatScrollBar.BAR_BREADTH + 1;
+      int height = getControlBounds( scrollBar ).height;
+      int balance = getRoundingBalance( distribution, scrollBar );
+      return new Rectangle[] {
+        calculateButtons( distribution, height, $( CLEARANCE, 0, width, distribution.buttonLen ) ),
+        $( CLEARANCE, distribution.buttonLen, width, distribution.upFastLength ),
+        calcDrag( distribution, $( CLEARANCE, distribution.dragStart, width, distribution.dragLength + balance ) ),
+        $( CLEARANCE, distribution.downFastStart, width, distribution.downFastLength - balance ),
+        calculateButtons( distribution, height, $( CLEARANCE, distribution.downStart, width, distribution.buttonLen ) )
+      };
+    }
+
+    private Rectangle calculateButtons( ComponentDistribution distribution, int length, Rectangle bounds ) {
+      Rectangle result = bounds;
+      if( length <= distribution.buttonLen * 2 ) {
+        int downStart = calcDownStartForSmallLength( bounds.y, length );
+        result = $( CLEARANCE, downStart, bounds.width, length / 2 );
+      }
+      return result;
+    }
+
+    @Override
+    protected void setDefaultSize( Control control ) {
+      Point size = control.getSize();
+      control.setSize( FlatScrollBar.BAR_BREADTH, size.y );
+    }
+
+    @Override
+    protected Point computeSize( Composite composite, int wHint, int hHint, boolean changed ) {
+      int y = hHint == SWT.DEFAULT ? composite.getParent().getClientArea().height : hHint;
+      return new Point( FlatScrollBar.BAR_BREADTH, y );
+    }
+
+    @Override
+    protected void expand( Control control, int maxExpansion ) {
+      Rectangle bounds = control.getBounds();
+      int expand = expand( bounds.width, maxExpansion );
+      control.setBounds( bounds.x - expand, bounds.y, bounds.width + expand, bounds.height );
+    }
+  };
+
+  static final Rectangle EMPTY_RECTANGLE = $( 0, 0, 0, 0 );
+  static final int CLEARANCE = BAR_BREADTH - 2;
+
+  private final int value;
+
+  protected abstract void layout( FlatScrollBar scrollBar, int buttonLength );
+  protected abstract void setDefaultSize( Control control );
+  protected abstract Point computeSize( Composite comp, int wHint, int hHint, boolean changed );
+  protected abstract void expand( Control control, int maxExpansion  );
+
+  Direction( int value ) {
+    this.value = value;
+  }
+
+  public int value() {
+    return value;
+  }
+
+  private static ComponentDistribution calculateComponentDistribution(
+    FlatScrollBar scrollBar , int buttonLength , int length  )
+  {
+    int range = scrollBar.getMaximum() - scrollBar.getMinimum();
+    int position = scrollBar.getSelection() - scrollBar.getMinimum();
+    int thumb = scrollBar.getThumb();
+    return new ComponentDistribution( buttonLength, length, range, position, thumb );
+  }
+
+  private static Rectangle getControlBounds( FlatScrollBar scrollBar ) {
+    return scrollBar.getClientArea();
+  }
+
+  private static void applyComponentBounds( FlatScrollBar scrollBar, Rectangle[] bounds ) {
+    scrollBar.up.getControl().setBounds( bounds[ 0 ] );
+    scrollBar.upFast.getControl().setBounds( bounds[ 1 ] );
+    scrollBar.drag.getControl().setBounds( bounds[ 2 ] );
+    scrollBar.downFast.getControl().setBounds( bounds[ 3 ] );
+    scrollBar.down.getControl().setBounds( bounds[ 4 ] );
+  }
+
+  // TODO [fappel]: There is a 1 pixel rounding problem at the seam of drag/downFast with down.
+  //                Seems to work but I would prefer a better solution if possible
+  private static int getRoundingBalance( ComponentDistribution calculation, FlatScrollBar scrollBar ) {
+    int result = 0;
+    int maximumSelection = scrollBar.getMaximum() - scrollBar.getThumb();
+    if( scrollBar.getSelection() == maximumSelection && 0 != calculation.downFastLength ) {
+      result = 1;
+    }
+    return result;
+  }
+
+  private static int expand( int toExpand, int maxExpansion ) {
+    return max( 0, FlatScrollBar.BAR_BREADTH + maxExpansion - max( FlatScrollBar.BAR_BREADTH, toExpand ) );
+  }
+
+  private static Rectangle calcDrag( ComponentDistribution distribution, Rectangle bounds ) {
+    Rectangle result = bounds;
+    if( isUndercutOfDragVisibility( distribution ) ) {
+      result = EMPTY_RECTANGLE;
+    }
+    return result;
+  }
+
+  private static boolean isUndercutOfDragVisibility( ComponentDistribution distribution ) {
+    return distribution.dragLength + distribution.buttonLen >= distribution.downStart;
+  }
+
+  private static int calcDownStartForSmallLength( int position, int length ) {
+    int result = position;
+    if( isDownStartPosition( position ) ) {
+      result = length / 2;
+    }
+    return result;
+  }
+  private static boolean isDownStartPosition( int position ) {
+    return position > 0 || position < 0;
+  }
+
+  private static Rectangle $( int x, int y, int width, int height ) {
+    return new Rectangle( x, y , width , height );
+  }
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/sb/DragControl.java

@@ -0,0 +1,105 @@
+package com.minres.scviewer.database.ui.swt.sb;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.ControlAdapter;
+import org.eclipse.swt.events.ControlEvent;
+import org.eclipse.swt.events.DragDetectEvent;
+import org.eclipse.swt.events.DragDetectListener;
+import org.eclipse.swt.events.MouseEvent;
+import org.eclipse.swt.events.MouseListener;
+import org.eclipse.swt.events.MouseMoveListener;
+import org.eclipse.swt.graphics.Color;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Label;
+
+
+class DragControl
+  extends ControlAdapter
+  implements ViewComponent, DragDetectListener, MouseListener, MouseMoveListener
+{
+
+  private final DragDetector dragDetector;
+  private final ImageUpdate imageUpdate;
+  private final DragAction dragAction;
+  private final Label control;
+
+  private Point startingPosition;
+
+  public interface DragAction {
+    void start();
+    void run( int startX, int startY, int currentX, int currentY );
+    void end();
+  }
+
+  DragControl( Composite parent, DragAction dragAction, int maxExpansion ) {
+    this.control = new Label( parent, SWT.NONE );
+    this.imageUpdate = new ImageUpdate( control, maxExpansion );
+    this.dragDetector = new DragDetector( control, 0 );
+    this.dragAction = dragAction;
+    initializeControl();
+  }
+
+  @Override
+  public Label getControl() {
+    return control;
+  }
+
+  @Override
+  public void dragDetected( DragDetectEvent event ) {
+    if( startingPosition != null ) {
+      dragAction.run( startingPosition.x, startingPosition.y, event.x, event.y );
+    }
+    dragDetector.dragHandled();
+  }
+
+  @Override
+  public void mouseDown( MouseEvent event ) {
+    startingPosition = new Point( event.x, event.y );
+    dragAction.start();
+  }
+
+  @Override
+  public void mouseUp( MouseEvent event ) {
+    if( startingPosition != null ) {
+      dragAction.end();
+    }
+    startingPosition = null;
+  }
+
+  @Override
+  public void mouseMove( MouseEvent event ) {
+    dragDetector.mouseMove( event );
+  }
+
+  @Override
+  public void controlResized( ControlEvent event ) {
+    imageUpdate.update();
+  }
+
+  void setForeground( Color color ) {
+    imageUpdate.setForeground( color );
+  }
+
+  Color getForeground() {
+    return imageUpdate.getForeground();
+  }
+
+  Color getBackground() {
+    return imageUpdate.getBackground();
+  }
+
+  void setBackground( Color color ) {
+    imageUpdate.setBackground( color );
+  }
+
+  private void initializeControl( ) {
+    control.addMouseListener( this );
+    control.addMouseMoveListener( this );
+    control.addControlListener( this );
+    control.addDragDetectListener( this );
+  }
+
+  @Override
+  public void mouseDoubleClick( MouseEvent event ) {}
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/sb/DragDetector.java

@@ -0,0 +1,60 @@
+package com.minres.scviewer.database.ui.swt.sb;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.MouseEvent;
+import org.eclipse.swt.widgets.Control;
+import org.eclipse.swt.widgets.Event;
+
+// TODO [fappel]: This is a workaround for a problem described here:
+// http://stackoverflow.com/questions/3908290/mousedown-events-are-not-delivered-until-mouseup-when-a-drag-source-is-present
+// This seems to be related to https://bugs.eclipse.org/bugs/show_bug.cgi?id=328396
+// which is resolved. As it did not work on my setup I adapted the workaround of the last
+// stackoverflow answer.
+
+public class DragDetector {
+
+  int lastMouseX;
+  int lastMouseY;
+  boolean dragEventGenerated;
+
+  private final Control control;
+  private final int sensibility;
+
+  public DragDetector( Control control, int sensibility ) {
+    this.control = control;
+    this.sensibility = sensibility;
+    this.control.setDragDetect( false );
+  }
+
+  public void mouseMove( MouseEvent e ) {
+    if( ( e.stateMask & SWT.BUTTON1 ) > 0 ) {
+      int deltaX = lastMouseX - e.x;
+      int deltaY = lastMouseY - e.y;
+      int dragDistance = deltaX * deltaX + deltaY * deltaY;
+      if( !dragEventGenerated && dragDistance > sensibility ) {
+        dragEventGenerated = true;
+        Event event = createDragEvent( e );
+        control.notifyListeners( SWT.DragDetect, event );
+      }
+      lastMouseX = e.x;
+      lastMouseY = e.y;
+    }
+  }
+
+  public void dragHandled() {
+    dragEventGenerated = false;
+  }
+
+  private Event createDragEvent( MouseEvent e ) {
+    Event event = new Event();
+    event.type = SWT.DragDetect;
+    event.display = control.getDisplay();
+    event.widget = control;
+    event.button = e.button;
+    event.stateMask = e.stateMask;
+    event.time = e.time;
+    event.x = e.x;
+    event.y = e.y;
+    return event;
+  }
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/sb/DragShifter.java

@@ -0,0 +1,59 @@
+package com.minres.scviewer.database.ui.swt.sb;
+
+import static com.minres.scviewer.database.ui.swt.sb.Direction.HORIZONTAL;
+import static com.minres.scviewer.database.ui.swt.sb.ShiftData.calculateSelectionRange;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.graphics.Point;
+
+import com.minres.scviewer.database.ui.swt.sb.DragControl.DragAction;
+
+final class DragShifter implements DragAction {
+
+  private final FlatScrollBar scrollBar;
+  private final int buttonLength;
+
+  public DragShifter( FlatScrollBar scrollBar, int buttonLength ) {
+    this.scrollBar = scrollBar;
+    this.buttonLength = buttonLength;
+  }
+
+  @Override
+  public void start() {
+    scrollBar.notifyListeners( SWT.DRAG );
+  }
+
+  @Override
+  public void run( int startX, int startY, int currentX, int currentY ) {
+    ShiftData shiftData = newShiftData( startX, startY, currentX, currentY );
+    if( shiftData.canShift() ) {
+      int selectionRange = calculateSelectionRange( scrollBar );
+      int selectionDelta = shiftData.calculateSelectionDelta( selectionRange );
+      int selection = scrollBar.getSelection() + selectionDelta;
+      scrollBar.setSelectionInternal( selection, SWT.DRAG );
+    }
+  }
+
+  @Override
+  public void end() {
+    scrollBar.notifyListeners( SWT.NONE );
+  }
+
+  private ShiftData newShiftData( int startX, int startY, int currentX, int currentY ) {
+    ShiftData result;
+    if( scrollBar.direction == HORIZONTAL ) {
+      result = new ShiftData( buttonLength, getScrollBarSize().x, getDragSize().x, currentX - startX );
+    } else {
+      result = new ShiftData( buttonLength, getScrollBarSize().y, getDragSize().y, currentY - startY );
+    }
+    return result;
+  }
+
+  private Point getScrollBarSize() {
+    return scrollBar.getSize();
+  }
+
+  private Point getDragSize() {
+    return scrollBar.drag.getControl().getSize();
+  }
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/sb/FastDecrementer.java

@@ -0,0 +1,49 @@
+package com.minres.scviewer.database.ui.swt.sb;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.graphics.Rectangle;
+import org.eclipse.swt.widgets.Display;
+
+import com.minres.scviewer.database.ui.swt.sb.ClickControl.ClickAction;
+
+class FastDecrementer implements ClickAction {
+
+  private final FlatScrollBar scrollBar;
+
+  private int x;
+  private int y;
+
+  FastDecrementer( FlatScrollBar scrollBar ) {
+    this.scrollBar = scrollBar;
+  }
+
+  @Override
+  public void run() {
+    Rectangle drag = getDragBounds();
+    Point mouse = getMouseLocation();
+    if( mouse.x <= drag.x || mouse.y <= drag.y ) {
+      int selection = scrollBar.getSelection() - scrollBar.getPageIncrement();
+      scrollBar.setSelectionInternal( selection, SWT.PAGE_UP );
+    }
+  }
+
+  @Override
+  public void setCoordinates( int x, int y ) {
+    this.x = x;
+    this.y = y;
+  }
+
+  private Point getMouseLocation() {
+    return getDisplay().map( scrollBar.upFast.getControl(), null, x, y );
+  }
+
+  private Rectangle getDragBounds() {
+    Rectangle dragBounds = scrollBar.drag.getControl().getBounds();
+    return getDisplay().map( scrollBar, null, dragBounds );
+  }
+
+  private Display getDisplay() {
+    return scrollBar.getDisplay();
+  }
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/sb/FastIncrementer.java

@@ -0,0 +1,42 @@
+package com.minres.scviewer.database.ui.swt.sb;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.graphics.Rectangle;
+import org.eclipse.swt.widgets.Display;
+
+import com.minres.scviewer.database.ui.swt.sb.ClickControl.ClickAction;
+
+class FastIncrementer implements ClickAction {
+
+  private final FlatScrollBar scrollBar;
+
+  private Point mouse;
+
+  FastIncrementer( FlatScrollBar scrollBar ) {
+    this.scrollBar = scrollBar;
+  }
+
+  @Override
+  public void run() {
+    Rectangle drag = getDragBounds();
+    if( mouse.x > drag.x + drag.width || mouse.y > drag.y + drag.height ) {
+      int selection = scrollBar.getSelection() + scrollBar.getPageIncrement();
+      scrollBar.setSelectionInternal( selection, SWT.PAGE_DOWN );
+    }
+  }
+
+  @Override
+  public void setCoordinates( int x, int y ) {
+    mouse = getMouseLocation( x, y );
+  }
+
+  private Point getMouseLocation(int x, int y) {
+    return Display.getCurrent().map( scrollBar.downFast.getControl(), null, x, y );
+  }
+
+  private Rectangle getDragBounds() {
+    Rectangle dragBounds = scrollBar.drag.getControl().getBounds();
+    return Display.getCurrent().map( scrollBar, null, dragBounds );
+  }
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/sb/FlatScrollBar.java

@@ -0,0 +1,295 @@
+package com.minres.scviewer.database.ui.swt.sb;
+
+import static com.minres.scviewer.database.ui.swt.sb.UntypedSelectionAdapter.lookup;
+
+import java.util.Collection;
+import java.util.HashSet;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.SelectionEvent;
+import org.eclipse.swt.events.SelectionListener;
+import org.eclipse.swt.graphics.Color;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Event;
+import org.eclipse.swt.widgets.Layout;
+import org.eclipse.swt.widgets.Listener;
+
+public class FlatScrollBar extends Composite {
+
+  public static final int BAR_BREADTH = 6;
+
+  static final int DEFAULT_MINIMUM = 0;
+  static final int DEFAULT_MAXIMUM = 100;
+  static final int DEFAULT_INCREMENT = 1;
+  static final int DEFAULT_THUMB = 10;
+  static final int DEFAULT_PAGE_INCREMENT = DEFAULT_THUMB;
+  static final int DEFAULT_SELECTION = 0;
+  static final int DEFAULT_BUTTON_LENGTH = 0;
+  static final int DEFAULT_MAX_EXPANSION = Direction.CLEARANCE + 2;
+
+  final ClickControl up;
+  final ClickControl upFast;
+  final DragControl drag;
+  final ClickControl downFast;
+  final ClickControl down;
+  final Direction direction;
+  final MouseWheelShifter mouseWheelHandler;
+  final Collection<SelectionListener> listeners;
+
+  private int minimum;
+  private int maximum;
+  private int increment;
+  private int pageIncrement;
+  private int thumb;
+  private int selection;
+  private boolean onDrag;
+  private int buttonLength;
+
+  public FlatScrollBar( final Composite parent, int style ) {
+    this( parent, style, DEFAULT_BUTTON_LENGTH, DEFAULT_MAX_EXPANSION );
+  }
+
+  FlatScrollBar( Composite parent, int style, int buttonLength, int maxExpansion ) {
+    super( parent, SWT.NONE );
+    super.setLayout( new FlatScrollBarLayout( getDirection( style ) ) );
+    this.minimum = DEFAULT_MINIMUM;
+    this.maximum = DEFAULT_MAXIMUM;
+    this.increment = DEFAULT_INCREMENT;
+    this.pageIncrement = DEFAULT_PAGE_INCREMENT;
+    this.thumb = DEFAULT_THUMB;
+    this.selection = DEFAULT_SELECTION;
+    this.buttonLength = buttonLength;
+    this.direction = getDirection( style );
+    this.direction.setDefaultSize( this );
+    this.up = new ClickControl( this, new Decrementer( this ), maxExpansion );
+    this.upFast = new ClickControl( this, new FastDecrementer( this ), maxExpansion );
+    this.drag = new DragControl( this, new DragShifter( this, buttonLength ), maxExpansion );
+    this.downFast = new ClickControl( this, new FastIncrementer( this ), maxExpansion );
+    this.down = new ClickControl( this, new Incrementer( this ), maxExpansion );
+    this.mouseWheelHandler = new MouseWheelShifter( this, parent, buttonLength );
+    this.listeners = new HashSet<SelectionListener>();
+    addMouseTrackListener( new MouseTracker( this, maxExpansion ) );
+    addControlListener( new ResizeObserver( this ) );
+    setDefaultColorScheme();
+  }
+
+  @Override
+  public void setLayout( Layout layout ) {
+    throw new UnsupportedOperationException( FlatScrollBar.class.getName() + " does not allow to change layout." );
+  };
+
+  @Override
+  public int getStyle() {
+    return direction != null ? super.getStyle() | direction.value() : super.getStyle();
+  };
+
+  Direction getDirection() {
+    return direction;
+  }
+
+  public void setMinimum( int minimum ) {
+    if( this.minimum != minimum && minimum >= 0 && minimum < maximum ) {
+      this.minimum = minimum;
+      adjustThumb();
+      adjustSelection();
+      layout();
+    }
+  }
+
+  public int getMinimum() {
+    return minimum;
+  }
+
+  public void setMaximum( int maximum ) {
+    if( this.maximum != maximum && maximum >= 0 && maximum > minimum ) {
+      this.maximum = maximum;
+      adjustThumb();
+      adjustSelection();
+      layout();
+    }
+  }
+
+  public int getMaximum() {
+    return maximum;
+  }
+
+  public void setThumb( int thumb ) {
+    if( this.thumb != thumb && thumb >= 1 ) {
+      this.thumb = thumb;
+      adjustThumb();
+      adjustSelection();
+      layout();
+    }
+  }
+
+  public int getThumb() {
+    return thumb;
+  }
+
+  public void setIncrement( int increment ) {
+    if( this.increment != increment ) {
+      this.increment = increment;
+      layout();
+    }
+  }
+
+  public int getIncrement() {
+    return increment;
+  }
+
+  public void setPageIncrement( int pageIncrement ) {
+    this.pageIncrement = pageIncrement;
+  }
+
+  public int getPageIncrement() {
+    return pageIncrement;
+  }
+
+  public void setSelection( int selection ) {
+    if( !onDrag ) {
+      updateSelection( selection );
+    }
+  }
+
+  public int getSelection() {
+    return selection;
+  }
+
+  public void addSelectionListener( SelectionListener selectionListener ) {
+    listeners.add( selectionListener );
+  }
+
+  public void removeSelectionListener( SelectionListener selectionListener ) {
+    listeners.remove( selectionListener );
+  }
+
+  @Override
+  public void addListener( int eventType, final Listener listener ) {
+    if( eventType == SWT.Selection ) {
+      addSelectionListener( new UntypedSelectionAdapter( listener ) );
+    } else {
+      super.addListener( eventType, listener );
+    }
+  }
+
+  @Override
+  public void removeListener( int eventType, Listener listener ) {
+    if( eventType == SWT.Selection ) {
+      removeSelectionListener( lookup( listeners, listener ) );
+    } else {
+      super.removeListener( eventType, listener );
+    }
+  }
+
+  @Override
+  public void layout() {
+    direction.layout( this, buttonLength );
+    update();
+  }
+
+  public void setIncrementButtonLength( int length ) {
+    this.buttonLength = length;
+    layout();
+  }
+
+  public int getIncrementButtonLength() {
+    return buttonLength;
+  }
+
+  public void setIncrementColor( Color color ) {
+    up.setForeground( color );
+    down.setForeground( color );
+  }
+
+  public Color getIncrementColor() {
+    return up.getForeground();
+  }
+
+  public void setPageIncrementColor( Color color ) {
+    upFast.setForeground( color );
+    downFast.setForeground( color );
+  }
+
+  public Color getPageIncrementColor() {
+    return upFast.getForeground();
+  }
+
+  public void setThumbColor( Color color ) {
+    drag.setForeground( color );
+  }
+
+  public Color getThumbColor() {
+    return drag.getForeground();
+  }
+
+  @Override
+  public void setBackground( Color color ) {
+    up.setBackground( color );
+    upFast.setBackground( color );
+    drag.setBackground( color );
+    downFast.setBackground( color );
+    down.setBackground( color );
+    super.setBackground( color );
+  }
+
+  protected void setSelectionInternal( int selection, int detail ) {
+    int oldSelection = this.selection;
+    updateSelection( selection );
+    if( oldSelection != this.selection ) {
+      notifyListeners( detail );
+    }
+  }
+
+  private void updateSelection( int selection ) {
+    if( this.selection != selection ) {
+      this.selection = selection;
+      adjustSelection();
+      layout();
+    }
+  }
+
+  public void notifyListeners( int detail ) {
+    updateOnDrag( detail );
+    SelectionEvent selectionEvent = createEvent( detail );
+    for( SelectionListener listener : listeners ) {
+      listener.widgetSelected( selectionEvent );
+    }
+  }
+
+  private void updateOnDrag( int detail ) {
+    onDrag = ( onDrag || ( SWT.DRAG & detail ) > 0 ) && ( SWT.NONE != detail );
+  }
+
+  private SelectionEvent createEvent( int detail ) {
+    Event event = new Event();
+    event.widget = this;
+    event.detail = detail;
+    return new SelectionEvent( event );
+  }
+
+  private void adjustThumb() {
+    if( thumb > maximum - minimum ) {
+      thumb = Math.min( maximum - minimum, thumb );
+      thumb = Math.max( 1, thumb );
+    }
+  }
+
+  private void adjustSelection() {
+    selection = Math.min( selection, maximum - thumb );
+    selection = Math.max( selection, minimum );
+  }
+
+  private static Direction getDirection( int style ) {
+    return ( style & SWT.HORIZONTAL ) > 0 ? Direction.HORIZONTAL : Direction.VERTICAL;
+  }
+
+  private void setDefaultColorScheme() {
+    up.setForeground( Display.getCurrent().getSystemColor( SWT.COLOR_WIDGET_NORMAL_SHADOW ) );
+    upFast.setForeground( Display.getCurrent().getSystemColor( SWT.COLOR_WIDGET_BACKGROUND ) );
+    drag.setForeground( Display.getCurrent().getSystemColor( SWT.COLOR_WIDGET_FOREGROUND ) );
+    downFast.setForeground( Display.getCurrent().getSystemColor( SWT.COLOR_WIDGET_BACKGROUND ) );
+    down.setForeground( Display.getCurrent().getSystemColor( SWT.COLOR_WIDGET_NORMAL_SHADOW ) );
+    setBackground( getBackground() );
+  }
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/sb/FlatScrollBarLayout.java

@@ -0,0 +1,23 @@
+package com.minres.scviewer.database.ui.swt.sb;
+
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Layout;
+
+class FlatScrollBarLayout extends Layout {
+
+  private final Direction direction;
+
+  public FlatScrollBarLayout( Direction orientation ) {
+    this.direction = orientation;
+  }
+
+  @Override
+  protected void layout( Composite composite, boolean flushCache ) {
+  }
+
+  @Override
+  protected Point computeSize( Composite composite, int wHint, int hHint, boolean flushCache ) {
+    return direction.computeSize( composite, wHint, hHint, flushCache );
+  }
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/sb/ImageDrawer.java

@@ -0,0 +1,109 @@
+package com.minres.scviewer.database.ui.swt.sb;
+
+import static java.lang.Math.min;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.graphics.Color;
+import org.eclipse.swt.graphics.GC;
+import org.eclipse.swt.graphics.Image;
+import org.eclipse.swt.widgets.Display;
+
+class ImageDrawer {
+
+  static final String IMAGE_DRAWER_IS_DISPOSED = "ImageDrawer is disposed.";
+
+  private final int maxExpansion;
+
+  private Color background;
+  private Color foreground;
+
+  ImageDrawer( int expansion  ) {
+    this( expansion, getSystemColor( SWT.COLOR_WIDGET_DARK_SHADOW ), getSystemColor( SWT.COLOR_LIST_BACKGROUND ) );
+  }
+
+  ImageDrawer( int expansion, Color background, Color foreground ) {
+    this.maxExpansion = expansion;
+    this.foreground = defensiveCopy( background );
+    this.background = defensiveCopy( foreground );
+  }
+
+  void setForeground( Color foreground ) {
+    checkDisposed();
+    if( foreground != null ) {
+      this.foreground = prepareColorAttribute( this.foreground, foreground );
+    }
+  }
+
+  Color getForeground() {
+    checkDisposed();
+    return foreground;
+  }
+
+  void setBackground( Color background ) {
+    checkDisposed();
+    if( background != null ) {
+      this.background = prepareColorAttribute( this.background, background );
+    }
+  }
+
+  Color getBackground() {
+    checkDisposed();
+    return background;
+  }
+
+  Image draw( int width, int height ) {
+    checkDisposed();
+    Image result = new Image( getDisplay(), width, height );
+    GC gc = new GC( result );
+    try {
+      draw( gc, width, height );
+    } finally {
+      gc.dispose();
+    }
+    return result;
+  }
+
+  boolean isDisposed() {
+    return background.isDisposed();
+  }
+
+  void dispose() {
+    if( !isDisposed() ) {
+      this.background.dispose();
+      this.foreground.dispose();
+    }
+  }
+
+  private void draw( GC gc, int width, int height ) {
+    gc.setBackground( background );
+    gc.fillRectangle( 0, 0, width, height );
+    gc.setBackground( foreground );
+    gc.setAdvanced( true );
+    gc.setAntialias( SWT.ON );
+    int arc = min( width, height ) == 1 ? 1 : maxExpansion + 2;
+    gc.fillRoundRectangle( 0, 0, width, height, arc, arc );
+  }
+
+  private void checkDisposed() {
+    if( isDisposed() ) {
+      throw new IllegalStateException( IMAGE_DRAWER_IS_DISPOSED );
+    }
+  }
+
+  private static Color getSystemColor( int colorCode ) {
+    return getDisplay().getSystemColor( colorCode );
+  }
+
+  private static Color prepareColorAttribute( Color oldColor, Color newColor ) {
+    oldColor.dispose();
+    return defensiveCopy( newColor );
+  }
+
+  private static Color defensiveCopy( Color background ) {
+    return new Color( getDisplay(), background.getRGB() );
+  }
+
+  private static Display getDisplay() {
+    return Display.getCurrent();
+  }
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/sb/ImageUpdate.java

@@ -0,0 +1,46 @@
+package com.minres.scviewer.database.ui.swt.sb;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.graphics.Color;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.widgets.Label;
+
+class ImageUpdate {
+
+  private final ImageDrawer imageDrawer;
+  private final Label control;
+
+  ImageUpdate( Label control, int maxExpansion ) {
+    this.imageDrawer = new ImageDrawer( maxExpansion );
+    this.control = control;
+    this.control.addListener( SWT.Dispose, evt -> imageDrawer.dispose() );
+  }
+
+  void setForeground( Color color ) {
+    imageDrawer.setForeground( color );
+  }
+
+  Color getForeground() {
+    return imageDrawer.getForeground();
+  }
+
+  void setBackground( Color color ) {
+    imageDrawer.setBackground( color );
+  }
+
+  Color getBackground() {
+    return imageDrawer.getBackground();
+  }
+
+  void update() {
+    if( !control.isDisposed() ) {
+      if( control.getImage() != null ) {
+        control.getImage().dispose();
+      }
+      Point size = control.getSize();
+      if( size.x > 0 && size.y > 0 ) {
+        control.setImage( imageDrawer.draw( size.x, size.y ) );
+      }
+    }
+  }
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/sb/Incrementer.java

@@ -0,0 +1,24 @@
+package com.minres.scviewer.database.ui.swt.sb;
+
+import org.eclipse.swt.SWT;
+
+import com.minres.scviewer.database.ui.swt.sb.ClickControl.ClickAction;
+
+class Incrementer implements ClickAction {
+
+  private final FlatScrollBar scrollBar;
+
+  Incrementer( FlatScrollBar scrollBar ) {
+    this.scrollBar = scrollBar;
+  }
+
+  @Override
+  public void run() {
+    int selection = scrollBar.getSelection() + scrollBar.getIncrement();
+    scrollBar.setSelectionInternal( selection, SWT.ARROW_DOWN );
+  }
+
+  @Override
+  public void setCoordinates( int x, int y ) {
+  }
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/sb/MouseDownActionTimer.java

@@ -0,0 +1,37 @@
+package com.minres.scviewer.database.ui.swt.sb;
+
+import org.eclipse.swt.widgets.Display;
+
+public class MouseDownActionTimer implements Runnable {
+
+  public static final int INITIAL_DELAY = 300;
+  public static final int FAST_DELAY = 50;
+
+  private final ActionScheduler scheduler;
+  private final TimerAction timerAction;
+  private final ButtonClick mouseClick;
+
+  public interface TimerAction extends Runnable {
+    boolean isEnabled();
+  }
+
+  public MouseDownActionTimer( TimerAction timerAction, ButtonClick mouseClick, Display display ) {
+    this.scheduler = new ActionScheduler( display, this );
+    this.timerAction = timerAction;
+    this.mouseClick = mouseClick;
+  }
+
+  public void activate() {
+    if( timerAction.isEnabled() ) {
+      scheduler.schedule( INITIAL_DELAY );
+    }
+  }
+
+  @Override
+  public void run() {
+    if( mouseClick.isArmed() && timerAction.isEnabled() ) {
+      timerAction.run();
+      scheduler.schedule( FAST_DELAY );
+    }
+  }
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/sb/MouseTracker.java

@@ -0,0 +1,66 @@
+package com.minres.scviewer.database.ui.swt.sb;
+
+import org.eclipse.swt.events.DisposeEvent;
+import org.eclipse.swt.events.DisposeListener;
+import org.eclipse.swt.events.MouseEvent;
+import org.eclipse.swt.events.MouseTrackAdapter;
+import org.eclipse.swt.graphics.Rectangle;
+import org.eclipse.swt.widgets.Display;
+
+class MouseTracker extends MouseTrackAdapter implements Runnable, DisposeListener {
+
+  static final int DELAY = 500;
+
+  private final FlatScrollBar scrollBar;
+  private final int maxExpansion;
+
+  private Rectangle expandedBounds;
+  private Rectangle originBounds;
+  private boolean mouseOver;
+  private boolean disposed;
+
+  MouseTracker( FlatScrollBar scrollBar, int maxExpansion  ) {
+    this.scrollBar = scrollBar;
+    this.maxExpansion = maxExpansion;
+    this.scrollBar.addDisposeListener( this );
+    this.scrollBar.up.getControl().addMouseTrackListener( this );
+    this.scrollBar.upFast.getControl().addMouseTrackListener( this );
+    this.scrollBar.drag.getControl().addMouseTrackListener( this );
+    this.scrollBar.downFast.getControl().addMouseTrackListener( this );
+    this.scrollBar.down.getControl().addMouseTrackListener( this );
+  }
+
+  @Override
+  public void mouseEnter( MouseEvent event ) {
+    mouseOver = true;
+    if( !disposed && originBounds == null ) {
+      originBounds = scrollBar.getBounds();
+      scrollBar.getDirection().expand( scrollBar, maxExpansion );
+      expandedBounds = scrollBar.getBounds();
+    }
+  }
+
+  @Override
+  public void mouseExit( MouseEvent event ) {
+    mouseOver = false;
+    if( !disposed ) {
+      Display.getCurrent().timerExec( DELAY, this );
+    }
+  }
+
+  @Override
+  public void run() {
+    if( !disposed && !mouseOver ) {
+      if( scrollBar.getBounds().equals( expandedBounds ) ) {
+        scrollBar.setBounds( originBounds );
+      }
+      originBounds = null;
+      expandedBounds = null;
+    }
+  }
+
+  @Override
+  public void widgetDisposed( DisposeEvent e ) {
+    disposed = true;
+  }
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/sb/MouseWheelShifter.java

@@ -0,0 +1,69 @@
+package com.minres.scviewer.database.ui.swt.sb;
+
+import static com.minres.scviewer.database.ui.swt.sb.Direction.HORIZONTAL;
+import static com.minres.scviewer.database.ui.swt.sb.ShiftData.calculateSelectionRange;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.DisposeEvent;
+import org.eclipse.swt.events.DisposeListener;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Event;
+import org.eclipse.swt.widgets.Listener;
+
+public class MouseWheelShifter implements Listener, DisposeListener {
+
+  private final FlatScrollBar scrollBar;
+  private final Composite parent;
+  private final int buttonLength;
+
+  MouseWheelShifter( FlatScrollBar scrollBar, Composite parent, int buttonLength ) {
+    this.scrollBar = scrollBar;
+    this.parent = parent;
+    this.buttonLength = buttonLength;
+    parent.addListener( getListenerType(), this );
+    scrollBar.addDisposeListener( this );
+  }
+
+  @Override
+  public void handleEvent( Event event ) {
+    handleMouseWheelScroll( event );
+  }
+
+  @Override
+  public void widgetDisposed( DisposeEvent e ) {
+    parent.removeListener( getListenerType(), this );
+  }
+
+  private void handleMouseWheelScroll( Event event ) {
+    ShiftData shiftData = newShiftData( event.count );
+    if( shiftData.canShift() ) {
+      int selectionRange = calculateSelectionRange( scrollBar );
+      int selectionDelta = shiftData.calculateSelectionDelta( selectionRange );
+      int selection = scrollBar.getSelection() - selectionDelta;
+      scrollBar.setSelectionInternal( selection, scrollBar.direction.value() );
+    }
+  }
+
+  private ShiftData newShiftData( int delta ) {
+    ShiftData result;
+    if( scrollBar.direction == Direction.HORIZONTAL ) {
+      result = new ShiftData( buttonLength, getScrollBarSize().x, getDragSize().x, delta );
+    } else {
+      result = new ShiftData( buttonLength, getScrollBarSize().y, getDragSize().y, delta );
+    }
+    return result;
+  }
+
+  private Point getScrollBarSize() {
+    return scrollBar.getSize();
+  }
+
+  private Point getDragSize() {
+    return scrollBar.drag.getControl().getSize();
+  }
+
+  private int getListenerType() {
+    return scrollBar.direction == HORIZONTAL ? SWT.MouseHorizontalWheel: SWT.MouseVerticalWheel;
+  }
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/sb/ResizeObserver.java

@@ -0,0 +1,19 @@
+package com.minres.scviewer.database.ui.swt.sb;
+
+import org.eclipse.swt.events.ControlAdapter;
+import org.eclipse.swt.events.ControlEvent;
+
+class ResizeObserver extends ControlAdapter {
+
+  private final FlatScrollBar flatScrollBar;
+
+  public ResizeObserver( FlatScrollBar flatScrollBar ) {
+    this.flatScrollBar = flatScrollBar;
+  }
+
+  @Override
+  public void controlResized( ControlEvent event ) {
+    flatScrollBar.layout();
+    flatScrollBar.moveAbove( null );
+  }
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/sb/ShiftData.java

@@ -0,0 +1,32 @@
+package com.minres.scviewer.database.ui.swt.sb;
+
+import static com.minres.scviewer.database.ui.swt.sb.ComponentDistribution.divide;
+
+class ShiftData {
+
+  private final int slidePixels;
+  private final int movedPixels;
+  private final int buttonLength;
+
+  ShiftData( int buttonLength, int scrollBarPixels, int dragPixels, int movedPixels ) {
+    this.buttonLength = buttonLength;
+    this.slidePixels = calculateSlidePixels( scrollBarPixels, dragPixels );
+    this.movedPixels = movedPixels;
+  }
+
+  boolean canShift( ) {
+    return slidePixels > 0;
+  }
+
+  int calculateSelectionDelta( int selectionRange ) {
+    return divide( movedPixels * selectionRange, slidePixels );
+  }
+
+  static int calculateSelectionRange( FlatScrollBar scrollBar ) {
+    return scrollBar.getMaximum() - scrollBar.getMinimum() - scrollBar.getThumb();
+  }
+
+  private int calculateSlidePixels( int scrollBarPixels, int dragPixels ) {
+    return scrollBarPixels - 2 * buttonLength - dragPixels;
+  }
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/sb/UntypedSelectionAdapter.java

@@ -0,0 +1,43 @@
+package com.minres.scviewer.database.ui.swt.sb;
+
+import java.util.Collection;
+
+import org.eclipse.swt.events.SelectionAdapter;
+import org.eclipse.swt.events.SelectionEvent;
+import org.eclipse.swt.events.SelectionListener;
+import org.eclipse.swt.widgets.Event;
+import org.eclipse.swt.widgets.Listener;
+
+class UntypedSelectionAdapter extends SelectionAdapter {
+
+  final Listener listener;
+
+  UntypedSelectionAdapter( Listener listener ) {
+    this.listener = listener;
+  }
+
+  @Override
+  public void widgetSelected( SelectionEvent selectionEvent ) {
+    Event event = new Event();
+    event.widget = selectionEvent.widget;
+    event.detail = selectionEvent.detail;
+    listener.handleEvent( event );
+  }
+
+  static SelectionListener lookup( Collection<SelectionListener> listeners, Listener untypedListener ) {
+    for( SelectionListener listener : listeners ) {
+      if( isAdapterType( listener ) && matches( untypedListener, listener ) ) {
+        return listener;
+      }
+    }
+    return null;
+  }
+
+  private static boolean isAdapterType( SelectionListener listener ) {
+    return listener instanceof UntypedSelectionAdapter;
+  }
+
+  private static boolean matches( Listener untypedListener, SelectionListener listener ) {
+    return ( ( UntypedSelectionAdapter )listener ).listener == untypedListener;
+  }
+}

plugins/com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/ui/swt/sb/ViewComponent.java

@@ -0,0 +1,7 @@
+package com.minres.scviewer.database.ui.swt.sb;
+
+import org.eclipse.swt.widgets.Control;
+
+public interface ViewComponent {
+  Control getControl();
+}

plugins/com.minres.scviewer.database.ui.swt/src/org/eclipse/wb/swt/SWTResourceManager.java

@@ -29,17 +29,14 @@ import org.eclipse.swt.graphics.Rectangle;
 import org.eclipse.swt.widgets.Display;
 
 /**
- * Utility class for managing OS resources associated with SWT controls such as
+ * Utility class for managing OS resources associated with SWT controls such as colors, fonts, images, etc.
- * colors, fonts, images, etc.
  * <p>
- * !!! IMPORTANT !!! Application code must explicitly invoke the
+ * !!! IMPORTANT !!! Application code must explicitly invoke the <code>dispose()</code> method to release the
- * <code>dispose()</code> method to release the operating system resources
+ * operating system resources managed by cached objects when those objects and OS resources are no longer
- * managed by cached objects when those objects and OS resources are no longer
  * needed (e.g. on application shutdown)
  * <p>
  * This class may be freely distributed as part of any application or plugin.
  * <p>
- * 
  * @author scheglov_ke
  * @author Dan Rubel
  */
@@ -49,54 +46,57 @@ public class SWTResourceManager {
 	// Color
 	//
 	////////////////////////////////////////////////////////////////////////////
-	private static Map<RGB, Color> colorMap = new HashMap<>();
+	private static Map<RGB, Color> m_colorMap = new HashMap<RGB, Color>();
-
-	private SWTResourceManager() {}
-	
 	/**
 	 * Returns the system {@link Color} matching the specific ID.
 	 * 
-	 * @param systemColorID the ID value for the color
+	 * @param systemColorID
+	 *            the ID value for the color
 	 * @return the system {@link Color} matching the specific ID
 	 */
 	public static Color getColor(int systemColorID) {
 		Display display = Display.getCurrent();
 		return display.getSystemColor(systemColorID);
 	}
-
 	/**
 	 * Returns a {@link Color} given its red, green and blue component values.
 	 * 
-	 * @param r the red component of the color
+	 * @param r
-	 * @param g the green component of the color
+	 *            the red component of the color
-	 * @param b the blue component of the color
+	 * @param g
-	 * @return the {@link Color} matching the given red, green and blue component
+	 *            the green component of the color
-	 *         values
+	 * @param b
+	 *            the blue component of the color
+	 * @return the {@link Color} matching the given red, green and blue component values
 	 */
 	public static Color getColor(int r, int g, int b) {
 		return getColor(new RGB(r, g, b));
 	}
-
 	/**
 	 * Returns a {@link Color} given its RGB value.
 	 * 
-	 * @param rgb the {@link RGB} value of the color
+	 * @param rgb
+	 *            the {@link RGB} value of the color
 	 * @return the {@link Color} matching the RGB value
 	 */
 	public static Color getColor(RGB rgb) {
-		return colorMap.computeIfAbsent(rgb, k -> new Color(Display.getCurrent(), rgb));
+		Color color = m_colorMap.get(rgb);
+		if (color == null) {
+			Display display = Display.getCurrent();
+			color = new Color(display, rgb);
+			m_colorMap.put(rgb, color);
+		}
+		return color;
 	}
-
 	/**
 	 * Dispose of all the cached {@link Color}'s.
 	 */
 	public static void disposeColors() {
-		for (Color color : colorMap.values()) {
+		for (Color color : m_colorMap.values()) {
 			color.dispose();
 		}
-		colorMap.clear();
+		m_colorMap.clear();
 	}
-
 	////////////////////////////////////////////////////////////////////////////
 	//
 	// Image
@@ -105,12 +105,12 @@ public class SWTResourceManager {
 	/**
 	 * Maps image paths to images.
 	 */
-	private static Map<String, Image> imageMap = new HashMap<>();
+	private static Map<String, Image> m_imageMap = new HashMap<String, Image>();
-
 	/**
 	 * Returns an {@link Image} encoded by the specified {@link InputStream}.
 	 * 
-	 * @param stream the {@link InputStream} encoding the image data
+	 * @param stream
+	 *            the {@link InputStream} encoding the image data
 	 * @return the {@link Image} encoded by the specified input stream
 	 */
 	protected static Image getImage(InputStream stream) throws IOException {
@@ -125,55 +125,52 @@ public class SWTResourceManager {
 			stream.close();
 		}
 	}
-
 	/**
 	 * Returns an {@link Image} stored in the file at the specified path.
 	 * 
-	 * @param path the path to the image file
+	 * @param path
+	 *            the path to the image file
 	 * @return the {@link Image} stored in the file at the specified path
 	 */
 	public static Image getImage(String path) {
-		Image image = imageMap.get(path);
+		Image image = m_imageMap.get(path);
 		if (image == null) {
 			try {
 				image = getImage(new FileInputStream(path));
-				imageMap.put(path, image);
+				m_imageMap.put(path, image);
 			} catch (Exception e) {
 				image = getMissingImage();
-				imageMap.put(path, image);
+				m_imageMap.put(path, image);
 			}
 		}
 		return image;
 	}
-
 	/**
-	 * Returns an {@link Image} stored in the file at the specified path relative to
+	 * Returns an {@link Image} stored in the file at the specified path relative to the specified class.
-	 * the specified class.
 	 * 
-	 * @param clazz the {@link Class} relative to which to find the image
+	 * @param clazz
-	 * @param path  the path to the image file, if starts with <code>'/'</code>
+	 *            the {@link Class} relative to which to find the image
+	 * @param path
+	 *            the path to the image file, if starts with <code>'/'</code>
 	 * @return the {@link Image} stored in the file at the specified path
 	 */
 	public static Image getImage(Class<?> clazz, String path) {
 		String key = clazz.getName() + '|' + path;
-		Image image = imageMap.get(key);
+		Image image = m_imageMap.get(key);
 		if (image == null) {
 			try {
 				image = getImage(clazz.getResourceAsStream(path));
-				imageMap.put(key, image);
+				m_imageMap.put(key, image);
 			} catch (Exception e) {
 				image = getMissingImage();
-				imageMap.put(key, image);
+				m_imageMap.put(key, image);
 			}
 		}
 		return image;
 	}
-
 	private static final int MISSING_IMAGE_SIZE = 10;
-
 	/**
-	 * @return the small {@link Image} that can be used as placeholder for missing
+	 * @return the small {@link Image} that can be used as placeholder for missing image.
-	 *         image.
 	 */
 	private static Image getMissingImage() {
 		Image image = new Image(Display.getCurrent(), MISSING_IMAGE_SIZE, MISSING_IMAGE_SIZE);
@@ -185,7 +182,6 @@ public class SWTResourceManager {
 		//
 		return image;
 	}
-
 	/**
 	 * Style constant for placing decorator image in top left corner of base image.
 	 */
@@ -195,13 +191,11 @@ public class SWTResourceManager {
 	 */
 	public static final int TOP_RIGHT = 2;
 	/**
-	 * Style constant for placing decorator image in bottom left corner of base
+	 * Style constant for placing decorator image in bottom left corner of base image.
-	 * image.
 	 */
 	public static final int BOTTOM_LEFT = 3;
 	/**
-	 * Style constant for placing decorator image in bottom right corner of base
+	 * Style constant for placing decorator image in bottom right corner of base image.
-	 * image.
 	 */
 	public static final int BOTTOM_RIGHT = 4;
 	/**
@@ -212,77 +206,83 @@ public class SWTResourceManager {
 	 * Maps images to decorated images.
 	 */
 	@SuppressWarnings("unchecked")
-	private static Map<Image, Map<Image, Image>>[] decoratedImageMap = new Map[LAST_CORNER_KEY];
+	private static Map<Image, Map<Image, Image>>[] m_decoratedImageMap = new Map[LAST_CORNER_KEY];
-
 	/**
 	 * Returns an {@link Image} composed of a base image decorated by another image.
 	 * 
-	 * @param baseImage the base {@link Image} that should be decorated
+	 * @param baseImage
-	 * @param decorator the {@link Image} to decorate the base image
+	 *            the base {@link Image} that should be decorated
+	 * @param decorator
+	 *            the {@link Image} to decorate the base image
 	 * @return {@link Image} The resulting decorated image
 	 */
 	public static Image decorateImage(Image baseImage, Image decorator) {
 		return decorateImage(baseImage, decorator, BOTTOM_RIGHT);
 	}
-
 	/**
 	 * Returns an {@link Image} composed of a base image decorated by another image.
 	 * 
-	 * @param baseImage the base {@link Image} that should be decorated
+	 * @param baseImage
-	 * @param decorator the {@link Image} to decorate the base image
+	 *            the base {@link Image} that should be decorated
-	 * @param corner    the corner to place decorator image
+	 * @param decorator
+	 *            the {@link Image} to decorate the base image
+	 * @param corner
+	 *            the corner to place decorator image
 	 * @return the resulting decorated {@link Image}
 	 */
 	public static Image decorateImage(final Image baseImage, final Image decorator, final int corner) {
 		if (corner <= 0 || corner >= LAST_CORNER_KEY) {
 			throw new IllegalArgumentException("Wrong decorate corner");
 		}
-		Map<Image, Map<Image, Image>> cornerDecoratedImageMap = decoratedImageMap[corner];
+		Map<Image, Map<Image, Image>> cornerDecoratedImageMap = m_decoratedImageMap[corner];
 		if (cornerDecoratedImageMap == null) {
-			cornerDecoratedImageMap = new HashMap<>();
+			cornerDecoratedImageMap = new HashMap<Image, Map<Image, Image>>();
-			decoratedImageMap[corner] = cornerDecoratedImageMap;
+			m_decoratedImageMap[corner] = cornerDecoratedImageMap;
 		}
-		Map<Image, Image> decoratedMap = cornerDecoratedImageMap.computeIfAbsent(baseImage,
+		Map<Image, Image> decoratedMap = cornerDecoratedImageMap.get(baseImage);
-				k -> new HashMap<Image, Image>());
+		if (decoratedMap == null) {
-		return decoratedMap.computeIfAbsent(decorator, k -> {
+			decoratedMap = new HashMap<Image, Image>();
+			cornerDecoratedImageMap.put(baseImage, decoratedMap);
+		}
+		//
+		Image result = decoratedMap.get(decorator);
+		if (result == null) {
 			Rectangle bib = baseImage.getBounds();
 			Rectangle dib = decorator.getBounds();
-			Image result = new Image(Display.getCurrent(), bib.width, bib.height);
+			//
+			result = new Image(Display.getCurrent(), bib.width, bib.height);
+			//
 			GC gc = new GC(result);
 			gc.drawImage(baseImage, 0, 0);
-			switch (corner) {
+			if (corner == TOP_LEFT) {
-			case TOP_LEFT:
 				gc.drawImage(decorator, 0, 0);
-				break;
+			} else if (corner == TOP_RIGHT) {
-			case TOP_RIGHT:
 				gc.drawImage(decorator, bib.width - dib.width, 0);
-				break;
+			} else if (corner == BOTTOM_LEFT) {
-			case BOTTOM_LEFT:
 				gc.drawImage(decorator, 0, bib.height - dib.height);
-				break;
+			} else if (corner == BOTTOM_RIGHT) {
-			case BOTTOM_RIGHT:
 				gc.drawImage(decorator, bib.width - dib.width, bib.height - dib.height);
-				break;
-			default:
-				// do nothing
 			}
 			gc.dispose();
-			return result;
+			//
-		});
+			decoratedMap.put(decorator, result);
+		}
+		return result;
 	}
-
 	/**
 	 * Dispose all of the cached {@link Image}'s.
 	 */
 	public static void disposeImages() {
 		// dispose loaded images
-		for (Image image : imageMap.values()) {
+		{
+			for (Image image : m_imageMap.values()) {
 				image.dispose();
 			}
-		imageMap.clear();
+			m_imageMap.clear();
+		}
 		// dispose decorated images
-		for (int i = 0; i < decoratedImageMap.length; i++) {
+		for (int i = 0; i < m_decoratedImageMap.length; i++) {
-			Map<Image, Map<Image, Image>> cornerDecoratedImageMap = decoratedImageMap[i];
+			Map<Image, Map<Image, Image>> cornerDecoratedImageMap = m_decoratedImageMap[i];
 			if (cornerDecoratedImageMap != null) {
 				for (Map<Image, Image> decoratedMap : cornerDecoratedImageMap.values()) {
 					for (Image image : decoratedMap.values()) {
@@ -294,7 +294,6 @@ public class SWTResourceManager {
 			}
 		}
 	}
-
 	////////////////////////////////////////////////////////////////////////////
 	//
 	// Font
@@ -303,39 +302,45 @@ public class SWTResourceManager {
 	/**
 	 * Maps font names to fonts.
 	 */
-	private static Map<String, Font> fontMap = new HashMap<>();
+	private static Map<String, Font> m_fontMap = new HashMap<String, Font>();
 	/**
 	 * Maps fonts to their bold versions.
 	 */
-	private static Map<Font, Font> fontToBoldFontMap = new HashMap<>();
+	private static Map<Font, Font> m_fontToBoldFontMap = new HashMap<Font, Font>();
-
 	/**
 	 * Returns a {@link Font} based on its name, height and style.
 	 * 
-	 * @param name   the name of the font
+	 * @param name
-	 * @param height the height of the font
+	 *            the name of the font
-	 * @param style  the style of the font
+	 * @param height
+	 *            the height of the font
+	 * @param style
+	 *            the style of the font
 	 * @return {@link Font} The font matching the name, height and style
 	 */
 	public static Font getFont(String name, int height, int style) {
 		return getFont(name, height, style, false, false);
 	}
-
 	/**
-	 * Returns a {@link Font} based on its name, height and style. Windows-specific
+	 * Returns a {@link Font} based on its name, height and style. Windows-specific strikeout and underline
-	 * strikeout and underline flags are also supported.
+	 * flags are also supported.
 	 * 
-	 * @param name      the name of the font
+	 * @param name
-	 * @param size      the size of the font
+	 *            the name of the font
-	 * @param style     the style of the font
+	 * @param size
-	 * @param strikeout the strikeout flag (warning: Windows only)
+	 *            the size of the font
-	 * @param underline the underline flag (warning: Windows only)
+	 * @param style
-	 * @return {@link Font} The font matching the name, height, style, strikeout and
+	 *            the style of the font
-	 *         underline
+	 * @param strikeout
+	 *            the strikeout flag (warning: Windows only)
+	 * @param underline
+	 *            the underline flag (warning: Windows only)
+	 * @return {@link Font} The font matching the name, height, style, strikeout and underline
 	 */
 	public static Font getFont(String name, int size, int style, boolean strikeout, boolean underline) {
 		String fontName = name + '|' + size + '|' + style + '|' + strikeout + '|' + underline;
-		return fontMap.computeIfAbsent(fontName, k -> {
+		Font font = m_fontMap.get(fontName);
+		if (font == null) {
 			FontData fontData = new FontData(name, size, style);
 			if (strikeout || underline) {
 				try {
@@ -349,45 +354,47 @@ public class SWTResourceManager {
 							logFontClass.getField("lfUnderline").set(logFont, Byte.valueOf((byte) 1)); //$NON-NLS-1$
 						}
 					}
-				} catch (Exception e) {
+				} catch (Throwable e) {
+					System.err.println("Unable to set underline or strikeout" + " (probably on a non-Windows platform). " + e); //$NON-NLS-1$ //$NON-NLS-2$
 				}
 			}
-			return new Font(Display.getCurrent(), fontData);
+			font = new Font(Display.getCurrent(), fontData);
-
+			m_fontMap.put(fontName, font);
-		});
+		}
-
+		return font;
 	}
-
 	/**
 	 * Returns a bold version of the given {@link Font}.
 	 * 
-	 * @param baseFont the {@link Font} for which a bold version is desired
+	 * @param baseFont
+	 *            the {@link Font} for which a bold version is desired
 	 * @return the bold version of the given {@link Font}
 	 */
 	public static Font getBoldFont(Font baseFont) {
-		return fontToBoldFontMap.computeIfAbsent(baseFont, k -> {
+		Font font = m_fontToBoldFontMap.get(baseFont);
-			FontData[] fontDatas = baseFont.getFontData();
+		if (font == null) {
+			FontData fontDatas[] = baseFont.getFontData();
 			FontData data = fontDatas[0];
-			return new Font(Display.getCurrent(), data.getName(), data.getHeight(), SWT.BOLD);
+			font = new Font(Display.getCurrent(), data.getName(), data.getHeight(), SWT.BOLD);
-		});
+			m_fontToBoldFontMap.put(baseFont, font);
+		}
+		return font;
 	}
-
 	/**
 	 * Dispose all of the cached {@link Font}'s.
 	 */
 	public static void disposeFonts() {
 		// clear fonts
-		for (Font font : fontMap.values()) {
+		for (Font font : m_fontMap.values()) {
 			font.dispose();
 		}
-		fontMap.clear();
+		m_fontMap.clear();
 		// clear bold fonts
-		for (Font font : fontToBoldFontMap.values()) {
+		for (Font font : m_fontToBoldFontMap.values()) {
 			font.dispose();
 		}
-		fontToBoldFontMap.clear();
+		m_fontToBoldFontMap.clear();
 	}
-
 	////////////////////////////////////////////////////////////////////////////
 	//
 	// Cursor
@@ -396,38 +403,40 @@ public class SWTResourceManager {
 	/**
 	 * Maps IDs to cursors.
 	 */
-	private static Map<Integer, Cursor> idToCursorMap = new HashMap<>();
+	private static Map<Integer, Cursor> m_idToCursorMap = new HashMap<Integer, Cursor>();
-
 	/**
 	 * Returns the system cursor matching the specific ID.
 	 * 
-	 * @param id int The ID value for the cursor
+	 * @param id
+	 *            int The ID value for the cursor
 	 * @return Cursor The system cursor matching the specific ID
 	 */
 	public static Cursor getCursor(int id) {
 		Integer key = Integer.valueOf(id);
-		return idToCursorMap.computeIfAbsent(key, k -> new Cursor(Display.getDefault(), id));
+		Cursor cursor = m_idToCursorMap.get(key);
+		if (cursor == null) {
+			cursor = new Cursor(Display.getDefault(), id);
+			m_idToCursorMap.put(key, cursor);
+		}
+		return cursor;
 	}
-
 	/**
 	 * Dispose all of the cached cursors.
 	 */
 	public static void disposeCursors() {
-		for (Cursor cursor : idToCursorMap.values()) {
+		for (Cursor cursor : m_idToCursorMap.values()) {
 			cursor.dispose();
 		}
-		idToCursorMap.clear();
+		m_idToCursorMap.clear();
 	}
-
 	////////////////////////////////////////////////////////////////////////////
 	//
 	// General
 	//
 	////////////////////////////////////////////////////////////////////////////
 	/**
-	 * Dispose of cached objects and their underlying OS resources. This should only
+	 * Dispose of cached objects and their underlying OS resources. This should only be called when the cached
-	 * be called when the cached objects are no longer needed (e.g. on application
+	 * objects are no longer needed (e.g. on application shutdown).
-	 * shutdown).
 	 */
 	public static void dispose() {
 		disposeColors();

plugins/com.minres.scviewer.database.vcd/META-INF/MANIFEST.MF

@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: VCD signal database
 Bundle-SymbolicName: com.minres.scviewer.database.vcd
-Bundle-Version: 2.2.0.qualifier
+Bundle-Version: 4.0.0.qualifier
 Bundle-Vendor: MINRES Technologies GmbH
 Bundle-RequiredExecutionEnvironment: JavaSE-11
 Require-Bundle: com.minres.scviewer.database;bundle-version="1.0.0",

plugins/com.minres.scviewer.database.vcd/OSGI-INF/component.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<scr:component xmlns:scr="http://www.osgi.org/xmlns/scr/v1.1.0" name="VCDDbLoader">
+<scr:component xmlns:scr="http://www.osgi.org/xmlns/scr/v1.1.0" name="VCDDbLoaderFactory">
-   <implementation class="com.minres.scviewer.database.vcd.VCDDbLoader"/>
+   <implementation class="com.minres.scviewer.database.vcd.VCDDbLoaderFactory"/>
    <service>
-      <provide interface="com.minres.scviewer.database.IWaveformDbLoader"/>
+      <provide interface="com.minres.scviewer.database.IWaveformDbLoaderFactory"/>
    </service>
 </scr:component>

plugins/com.minres.scviewer.database.vcd/pom.xml

@@ -1,11 +1,11 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <artifactId>com.minres.scviewer.database.vcd</artifactId>
-  <version>2.2.0-SNAPSHOT</version>
+  <version>4.0.0-SNAPSHOT</version>
   <parent>
   	<groupId>com.minres.scviewer</groupId>
   	<artifactId>com.minres.scviewer.parent</artifactId>
-  	<version>2.12.2</version>
+  	<version>2.15.1</version>
 	<relativePath>../..</relativePath>
   </parent>
   <packaging>eclipse-plugin</packaging>

plugins/com.minres.scviewer.database.vcd/src/com/minres/scviewer/database/vcd/VCDDbLoader.java

@@ -20,15 +20,13 @@ import java.util.ArrayDeque;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.List;
-import java.util.NavigableMap;
-import java.util.TreeMap;
 import java.util.Vector;
 import java.util.zip.GZIPInputStream;
 
 import com.google.common.collect.Iterables;
 import com.minres.scviewer.database.BitVector;
 import com.minres.scviewer.database.DoubleVal;
-import com.minres.scviewer.database.IEvent;
+import com.minres.scviewer.database.IEventList;
 import com.minres.scviewer.database.IWaveform;
 import com.minres.scviewer.database.IWaveformDb;
 import com.minres.scviewer.database.IWaveformDbLoader;
@@ -115,19 +113,20 @@ public class VCDDbLoader implements IWaveformDbLoader, IVCDDatabaseBuilder {
 			moduleStack=null;
 			throw new InputFormatException(e.toString());
 		}
-		if(!res) throw new InputFormatException("Could not parse VCD file");
+		if(!res) 
+			throw new InputFormatException("Could not parse VCD file");
 		// calculate max time of this database
 		for(IWaveform waveform:signals) {
-			NavigableMap<Long, IEvent[]> events =waveform.getEvents();
+			IEventList events =waveform.getEvents();
 			if(!events.isEmpty())
 				maxTime= Math.max(maxTime, events.lastKey());
 		}
 		// extend signals to have a last value set at max time
 		for(IWaveform s:signals){
 			if(s instanceof VCDSignal<?>) {
-				TreeMap<Long,?> events = (TreeMap<Long, ?>) ((VCDSignal<?>)s).getEvents();
+				IEventList events = ((VCDSignal<?>)s).getEvents();
 				if(events.size()>0 && events.lastKey()<maxTime){
-					Object val = events.lastEntry().getValue();
+					Object val = events.lastEntry().events[0];
 					if(val instanceof BitVector) {
 						((VCDSignal<BitVector>)s).addSignalChange(maxTime, (BitVector) val);
 					} else if(val instanceof DoubleVal)
@@ -147,7 +146,7 @@ public class VCDDbLoader implements IWaveformDbLoader, IVCDDatabaseBuilder {
 	 * @see com.minres.scviewer.database.ITrDb#getMaxTime()
 	 */
 	@Override
-	public Long getMaxTime() {
+	public long getMaxTime() {
 		return maxTime;
 	}
 
@@ -165,7 +164,8 @@ public class VCDDbLoader implements IWaveformDbLoader, IVCDDatabaseBuilder {
 	@Override
 	public void enterModule(String tokenString) {
 		if(moduleStack.isEmpty()) {
-			if("SystemC".compareTo(tokenString)!=0) moduleStack.push(tokenString);
+			if("SystemC".compareTo(tokenString)!=0)
+				moduleStack.push(tokenString);
 		} else
 			moduleStack.push(moduleStack.peek()+"."+tokenString);
 

plugins/com.minres.scviewer.database.vcd/src/com/minres/scviewer/database/vcd/VCDDbLoaderFactory.java

@@ -0,0 +1,77 @@
+/*******************************************************************************
+ * Copyright (c) 2015-2021 MINRES Technologies GmbH and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     MINRES Technologies GmbH - initial API and implementation
+ *******************************************************************************/
+package com.minres.scviewer.database.vcd;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.zip.GZIPInputStream;
+
+import com.minres.scviewer.database.IWaveformDbLoader;
+import com.minres.scviewer.database.IWaveformDbLoaderFactory;
+
+/**
+ * The Class VCDDb.
+ */
+public class VCDDbLoaderFactory implements IWaveformDbLoaderFactory {
+	/**
+	 * Checks if is gzipped.
+	 *
+	 * @param f the f
+	 * @return true, if is gzipped
+	 */
+	private static boolean isGzipped(File f) {
+		try (InputStream is = new FileInputStream(f)) {
+			byte [] signature = new byte[2];
+			int nread = is.read( signature ); //read the gzip signature
+			return nread == 2 && signature[ 0 ] == (byte) 0x1f && signature[ 1 ] == (byte) 0x8b;
+		}
+		catch (IOException e) {
+			return false;
+		}
+	}
+
+
+	/**
+	 * Can load.
+	 *
+	 * @param inputFile the input file
+	 * @return true, if successful
+	 */
+	@Override
+	public boolean canLoad(File inputFile) {
+		if(!inputFile.isDirectory() || inputFile.exists()) {
+			String name = inputFile.getName();
+			if(!(name.endsWith(".vcd") ||
+					name.endsWith(".vcdz") ||
+					name.endsWith(".vcdgz")  ||
+					name.endsWith(".vcd.gz")) )
+				return false;
+			boolean gzipped = isGzipped(inputFile);
+			try(InputStream stream = gzipped ? new GZIPInputStream(new FileInputStream(inputFile)) : new FileInputStream(inputFile)){
+				byte[] buffer = new byte[8];
+				if (stream.read(buffer, 0, buffer.length) == buffer.length) {
+					return buffer[0]=='$';
+				}
+			} catch (Exception e) {
+				return false;
+			}
+		}
+		return false;
+	}
+
+
+	@Override
+	public IWaveformDbLoader getLoader() {
+		return new VCDDbLoader();
+	}
+}

plugins/com.minres.scviewer.database.vcd/src/com/minres/scviewer/database/vcd/VCDSignal.java

@@ -10,12 +10,11 @@
  *******************************************************************************/
 package com.minres.scviewer.database.vcd;
 
-import java.util.Map.Entry;
+import com.minres.scviewer.database.EventEntry;
-import java.util.NavigableMap;
+import com.minres.scviewer.database.EventList;
-import java.util.TreeMap;
-
 import com.minres.scviewer.database.HierNode;
 import com.minres.scviewer.database.IEvent;
+import com.minres.scviewer.database.IEventList;
 import com.minres.scviewer.database.IWaveform;
 import com.minres.scviewer.database.WaveformType;
 
@@ -27,7 +26,7 @@ public class VCDSignal<T extends IEvent> extends HierNode implements IWaveform {
 
 	private final int width;
 
-	private NavigableMap<Long, IEvent[]> values;
+	private IEventList values;
 	
 	public VCDSignal(String name) {
 		this(0, name, 1);
@@ -42,7 +41,7 @@ public class VCDSignal<T extends IEvent> extends HierNode implements IWaveform {
 		fullName=name;
 		this.id=id;
 		this.width=width;
-		this.values=new TreeMap<>();
+		this.values=new EventList();
 	}
 
 	public VCDSignal(VCDSignal<T> o, int id, String name) {
@@ -63,44 +62,36 @@ public class VCDSignal<T extends IEvent> extends HierNode implements IWaveform {
 	}
 
 	@Override
-	public Long getId() {
+	public long getId() {
 		return id;
 	}
 
 	public void addSignalChange(Long time, T value){
-		if(values.containsKey(time)) {
+		values.put(time, value);
-			IEvent[] oldV = values.get(time);
-			IEvent[] newV = new IEvent[oldV.length+1];
-			System.arraycopy(oldV, 0, newV, 0, oldV.length);
-			newV[oldV.length]=value;
-			values.put(time, newV);
-		} else {
-			values.put(time, new IEvent[] {value});
-		}
 	}
 	
 	@Override
-	public NavigableMap<Long, IEvent[]> getEvents() {
+	public IEventList getEvents() {
 		return values;
 	}
 
 	@Override
-	public IEvent[] getEventsAtTime(Long time) {
+	public IEvent[] getEventsAtTime(long time) {
 		return values.get(time);
 	}
 
     @Override
-    public IEvent[] getEventsBeforeTime(Long time) {
+    public IEvent[] getEventsBeforeTime(long time) {
-    	Entry<Long, IEvent[]> e = values.floorEntry(time);
+    	EventEntry e = values.floorEntry(time);
     	if(e==null)
     		return new IEvent[] {};
     	else
-    		return values.floorEntry(time).getValue();
+    		return values.floorEntry(time).events;
     }
 
 	@Override
 	public boolean isSame(IWaveform other) {
-		return( other instanceof VCDSignal<?> && this.getId().equals(other.getId()));
+		return( other instanceof VCDSignal<?> && this.getId() == other.getId());
 	}
 
 	@Override

plugins/com.minres.scviewer.database/.settings/org.eclipse.jdt.core.prefs

@@ -12,5 +12,5 @@ org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
 org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
 org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning
 org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
-org.eclipse.jdt.core.compiler.release=disabled
+org.eclipse.jdt.core.compiler.release=enabled
 org.eclipse.jdt.core.compiler.source=11

plugins/com.minres.scviewer.database/META-INF/MANIFEST.MF

@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: Waveform database
 Bundle-SymbolicName: com.minres.scviewer.database
-Bundle-Version: 3.0.0.qualifier
+Bundle-Version: 4.0.0.qualifier
 Bundle-Vendor: MINRES Technologies GmbH
 Bundle-RequiredExecutionEnvironment: JavaSE-11
 Export-Package: com.minres.scviewer.database,

plugins/com.minres.scviewer.database/OSGI-INF/component.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <scr:component xmlns:scr="http://www.osgi.org/xmlns/scr/v1.1.0" name="com.minres.scviewer.database.loader">
    <implementation class="com.minres.scviewer.database.internal.WaveformDb"/>
-   <reference bind="bind" cardinality="1..n" interface="com.minres.scviewer.database.IWaveformDbLoader" name="IWaveformDbLoader" policy="dynamic" unbind="unbind"/>
+   <reference bind="bind" cardinality="1..n" interface="com.minres.scviewer.database.IWaveformDbLoaderFactory" name="IWaveformDbLoaderFactory" policy="dynamic" unbind="unbind"/>
 </scr:component>

plugins/com.minres.scviewer.database/pom.xml

@@ -4,9 +4,9 @@
   <parent>
   	<groupId>com.minres.scviewer</groupId>
   	<artifactId>com.minres.scviewer.parent</artifactId>
-  	<version>2.12.2</version>
+  	<version>2.15.1</version>
 	<relativePath>../..</relativePath>
   </parent>
   <packaging>eclipse-plugin</packaging>
-  <version>3.0.0-SNAPSHOT</version>
+  <version>4.0.0-SNAPSHOT</version>
 </project>

plugins/com.minres.scviewer.database/src/com/minres/scviewer/database/EventEntry.java

@@ -0,0 +1,41 @@
+package com.minres.scviewer.database;
+
+import java.util.Arrays;
+
+public class EventEntry implements Comparable<EventEntry>{
+	public long timestamp; // unsigned
+	public IEvent[] events = null;
+	
+	
+	public EventEntry(long timestamp) {
+		this.timestamp = timestamp;
+	}
+
+
+	public EventEntry(long timestamp, IEvent[] events) {
+		this.timestamp = timestamp;
+		this.events = events;
+	}
+
+
+	@Override
+	public int compareTo(EventEntry o) {
+		return Long.compareUnsigned(timestamp, o.timestamp);
+	}
+	
+	@Override
+	public String toString() {
+		return String.format("e.%d@%d", events.length,timestamp);
+	}
+
+
+	public void append(IEvent value) {
+		if(events.length==0)
+			events = new IEvent[] {value};
+		else {
+			int idx = events.length;
+			events = Arrays.copyOf(events, idx+1);
+			events[idx]=value;
+		}
+	}
+}

plugins/com.minres.scviewer.database/src/com/minres/scviewer/database/EventList.java

@@ -0,0 +1,195 @@
+package com.minres.scviewer.database;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+
+public class EventList  implements IEventList {
+
+	ArrayList<EventEntry> store = new ArrayList<>();
+	int start = 0;
+	int end = store.size();
+	boolean unmodifiable = false;
+			
+	public class Iterator implements java.util.Iterator<EventEntry> {
+		
+		EventList list;
+		
+		private int pos;
+		
+		public Iterator(EventList list) {
+			this.list=list;
+			this.pos=-1;
+		}
+
+		@Override
+		public boolean hasNext() {
+			return pos<(list.end-1);
+		}
+
+		@Override
+		public EventEntry next() {
+			if(hasNext()) {
+				pos++;
+				return list.store.get(pos);
+			} else
+				return null;
+		}
+
+		@Override
+		public void remove() {
+			list.store.remove(pos);
+		}
+		
+	}
+	
+	public EventList() {
+	}
+
+	private EventList(ArrayList<EventEntry> store , int start, int end) {
+		this.store=store;
+		this.start=start;
+		this.end=end;
+		this.unmodifiable=true;
+	}
+
+	@Override
+	public IEventList subMap(long from, boolean includeFrom, long to) {
+		//the index of the first element greater than the key, or list.size()
+		int beginIndex = Collections.binarySearch(store, new EventEntry(from));
+		int startIndex = beginIndex < 0? -(beginIndex + 1): beginIndex;
+		int endIndex = Collections.binarySearch(store, new EventEntry(to));
+		endIndex = endIndex < 0? -(endIndex + 1): endIndex+1;
+		if(beginIndex>0 && !includeFrom)
+			return new EventList(store, startIndex+1, endIndex);
+		else
+			return new EventList(store, startIndex, endIndex);
+	}
+	
+	@Override
+	public int size() {
+		return end-start;
+	}
+
+	@Override
+	public boolean containsKey(long key) {
+		int index = Collections.binarySearch(store, new EventEntry(key));
+		return index>=0 && index>=start && index<end;
+	}
+
+	@Override
+	public IEvent[] get(long key) {
+		int index = Collections.binarySearch(store, new EventEntry(key));
+		if(index<0) return null;
+		return index>=start && index<end? store.get(index).events: null;
+	}
+
+	@Override
+	public void put(long key, IEvent value) {
+		if(unmodifiable) throw new UnsupportedOperationException();
+		if(store.size()==0 || store.get(store.size()-1).timestamp < key) {
+			store.add(new EventEntry(key, new IEvent[] {value}));
+		} else {
+			int index = Collections.binarySearch(store, new EventEntry(key));
+	        // < 0 if element is not in the list, see Collections.binarySearch
+	        if (index < 0) {
+	    		EventEntry e = new EventEntry(key, new IEvent[] {value});
+	        	index = -(index + 1);
+		        store.add(index, e);
+	        } else { 
+	            // Insertion index is index of existing element, to add new element behind it increase index
+	        	store.get(index).append(value);
+	        }
+		}
+		end=store.size();
+	}
+
+	@Override
+	public Collection<EventEntry> entrySet() {
+		if(start != 0 || end != store.size())
+			return Collections.unmodifiableList(store.subList(start, end));
+		else
+			return Collections.unmodifiableList(store);
+	}
+
+	@Override
+	public boolean isEmpty() {
+		return start==end || store.isEmpty();
+	}
+
+	@Override
+	public long firstKey() {
+		return store.get(start).timestamp;
+	}
+
+	@Override
+	public long lastKey() {
+		return store.get(end-1).timestamp;
+	}
+
+	// Navigable map functions
+	@Override
+	public EventEntry firstEntry() {
+		return  store.get(start);
+	}
+
+	@Override
+	public EventEntry lastEntry() {
+		return store.get(end-1);
+	}
+
+	@Override
+	public EventEntry floorEntry(long key) {
+		int index = Collections.binarySearch(store, new EventEntry(key));
+    	if(index==-1) return null;
+        // < 0 if element is not in the list, see Collections.binarySearch
+        if (index < 0) {
+        	index = -(index + 2);
+        }
+        if(index>=end)
+        	return store.get(end-1);
+		return index<start? null: store.get(index);
+	}
+
+	@Override
+	public EventEntry ceilingEntry(long key) {
+		int index = Collections.binarySearch(store, new EventEntry(key));
+        // < 0 if element is not in the list, see Collections.binarySearch
+        if (index < 0) 
+        	index = -(index + 1);
+        if(index<start)
+        	return store.get(start);
+		return index>=end? null: store.get(index);
+	}
+
+	@Override
+	public EventEntry lowerEntry(long key) {
+		int index = Collections.binarySearch(store, new EventEntry(key));
+        // < 0 if element is not in the list, see Collections.binarySearch
+        if (index < 0) 
+        	index = -(index + 1);
+    	index--;
+        if(index>=end)
+        	return store.get(end-1);
+		return index>=end || index<start ?null:store.get(index);
+	}
+
+	@Override
+	public EventEntry higherEntry(long key) {
+		int index = Collections.binarySearch(store, new EventEntry(key));
+        // < 0 if element is not in the list, see Collections.binarySearch
+        if (index < 0) 
+        	index = -(index + 1);
+        else
+        	index++;
+        if(index<start)
+        	return store.get(start);
+		return index>=end || index<start ?null:store.get(index);
+	}
+
+	@Override
+	public java.util.Iterator<EventEntry> iterator() {
+		return new Iterator(this);
+	}
+
+}

plugins/com.minres.scviewer.database/src/com/minres/scviewer/database/IEventList.java

@@ -0,0 +1,84 @@
+package com.minres.scviewer.database;
+
+import java.util.Collection;
+
+public interface IEventList extends Iterable<EventEntry> {
+
+	int size();
+
+	Collection<EventEntry> entrySet();
+
+	boolean containsKey(long key);
+
+	IEvent[] get(long key);
+
+	void put(long key, IEvent value);
+
+	long firstKey();
+
+	long lastKey();
+
+	boolean isEmpty();
+	/**
+	 * Returns a key-value mapping associated with the greatest key less 
+	 * than or equal to the given key, or null if there is no such key.
+	 * 
+	 * @param key
+	 * @return
+	 */
+	EventEntry floorEntry(long key);
+	/**
+	 * Returns a key-value mapping associated with the least key greater 
+	 * than or equal to the given key, or null if there is no such key.
+	 * 
+	 * @param key
+	 * @return
+	 */
+	EventEntry ceilingEntry(long key);
+	/**
+	 * Returns a key-value mapping associated with the least key in this map,
+	 * or null if the map is empty.
+	 * 
+	 * @return
+	 */
+	EventEntry firstEntry();
+	/**
+	 * Returns a key-value mapping associated with the least key in this map,
+	 * or null if the map is empty.
+	 * 
+	 * @return
+	 */
+	EventEntry lastEntry();
+	/**
+	 * Returns a key-value mapping associated with the least key strictly greater
+	 * than the given key, or null if there is no such key.
+	 * 
+	 * @param key
+	 * @return
+	 */
+	EventEntry higherEntry(long key);
+	/**
+	 * Returns a key-value mapping associated with the greatest key strictly less 
+	 * than the given key, or null if there is no such key.
+	 * 
+	 * @param key
+	 * @return
+	 */
+	EventEntry lowerEntry(long key);
+    /**
+     * Returns a view of the portion of this map whose keys range from
+     * {@code fromKey} to {@code toKey}.  If {@code fromKey} and
+     * {@code toKey} are equal, the returned map is empty unless
+     * {@code fromInclusive} is true.  The
+     * returned map is backed by this map, so changes in the returned map are
+     * reflected in this map, and vice-versa.  The returned map supports all
+     * optional map operations that this map supports.
+     *
+     * @param fromKey low endpoint of the keys in the returned map
+     * @param fromInclusive {@code true} if the low endpoint
+     *        is to be included in the returned view
+     * @param toKey high endpoint of the keys in the returned map (inclusive)
+     */
+	IEventList subMap(long key, boolean b, long key2);
+	
+}

plugins/com.minres.scviewer.database/src/com/minres/scviewer/database/IWaveform.java

@@ -10,7 +10,6 @@
  *******************************************************************************/
 package com.minres.scviewer.database;
 
-import java.util.NavigableMap;
 
 // TODO: Auto-generated Javadoc
 /**
@@ -25,7 +24,7 @@ public interface IWaveform extends IHierNode {
 	 *
 	 * @return the id
 	 */
-	public Long getId();
+	public long getId();
 
 	/**
 	 * Checks if is same.
@@ -40,7 +39,7 @@ public interface IWaveform extends IHierNode {
 	 *
 	 * @return the events
 	 */
-	public NavigableMap<Long, IEvent[]> getEvents();
+	public IEventList getEvents();
 
 	/**
 	 * Gets the events at time.
@@ -48,7 +47,7 @@ public interface IWaveform extends IHierNode {
 	 * @param time the time
 	 * @return the events at time
 	 */
-	public IEvent[] getEventsAtTime(Long time);
+	public IEvent[] getEventsAtTime(long time);
 
 	/**
 	 * Gets the events before time.
@@ -56,7 +55,7 @@ public interface IWaveform extends IHierNode {
 	 * @param time the time
 	 * @return the events before time
 	 */
-	public IEvent[] getEventsBeforeTime(Long time);
+	public IEvent[] getEventsBeforeTime(long time);
 
 	/**
 	 * Gets the type.

plugins/com.minres.scviewer.database/src/com/minres/scviewer/database/IWaveformDb.java

@@ -23,7 +23,7 @@ public interface IWaveformDb extends IHierNode {
 	 *
 	 * @return the max time
 	 */
-	public Long getMaxTime();
+	public long getMaxTime();
 
 	/**
 	 * Gets the stream by name.
@@ -62,9 +62,4 @@ public interface IWaveformDb extends IHierNode {
 	 */
 	public boolean isLoaded();
 
-	/**
-	 * Clear.
-	 */
-	public void clear();
-
 }