522 lines
18 KiB
Java
522 lines
18 KiB
Java
/*******************************************************************************
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* Copyright (c) 2015-2021 MINRES Technologies GmbH and others.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*
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* Contributors:
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* MINRES Technologies GmbH - initial API and implementation
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*******************************************************************************/
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package com.minres.scviewer.database.ui.swt.internal;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Map.Entry;
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import java.util.Optional;
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import org.eclipse.swt.SWT;
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import org.eclipse.swt.events.ControlAdapter;
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import org.eclipse.swt.events.ControlEvent;
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import org.eclipse.swt.events.PaintEvent;
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import org.eclipse.swt.events.SelectionAdapter;
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import org.eclipse.swt.events.SelectionEvent;
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import org.eclipse.swt.graphics.GC;
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import org.eclipse.swt.graphics.Image;
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import org.eclipse.swt.graphics.Point;
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import org.eclipse.swt.graphics.Rectangle;
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import org.eclipse.swt.widgets.Canvas;
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import org.eclipse.swt.widgets.Composite;
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import org.eclipse.swt.widgets.Event;
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import org.eclipse.swt.widgets.ScrollBar;
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import com.google.common.collect.Lists;
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import com.minres.scviewer.database.IEvent;
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import com.minres.scviewer.database.IWaveform;
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import com.minres.scviewer.database.RelationType;
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import com.minres.scviewer.database.tx.ITx;
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import com.minres.scviewer.database.tx.ITxEvent;
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import com.minres.scviewer.database.ui.IWaveformStyleProvider;
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import com.minres.scviewer.database.ui.IWaveformView;
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import com.minres.scviewer.database.ui.TrackEntry;
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import com.minres.scviewer.database.ui.swt.Constants;
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public class WaveformCanvas extends Canvas {
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private boolean doubleBuffering = true;
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IWaveformStyleProvider styleProvider;
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private long scaleFactor = 1000000L; // 1ns
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String unit="ns";
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private int level = 12;
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private long maxTime;
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protected Point origin; /* original size */
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protected int rulerHeight=40;
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protected List<IPainter> painterList;
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ITx currentSelection;
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private List<SelectionAdapter> selectionListeners;
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private RulerPainter rulerPainter;
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private TrackAreaPainter trackAreaPainter;
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private ArrowPainter arrowPainter;
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private List<CursorPainter> cursorPainters;
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HashMap<IWaveform, IWaveformPainter> wave2painterMap;
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/**
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* Constructor for ScrollableCanvas.
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*
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* @param parent
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* the parent of this control.super(parent, style | SWT.DOUBLE_BUFFERED | SWT.NO_BACKGROUND | SWT.NO_REDRAW_RESIZE | SWT.V_SCROLL | SWT.H_SCROLL);
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* @param style
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* the style of this control.
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*/
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public WaveformCanvas(final Composite parent, int style, IWaveformStyleProvider styleProvider) {
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super(parent, style | SWT.DOUBLE_BUFFERED | SWT.NO_BACKGROUND | SWT.V_SCROLL | SWT.H_SCROLL);
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this.styleProvider=styleProvider;
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addControlListener(new ControlAdapter() { /* resize listener. */
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@Override
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public void controlResized(ControlEvent event) {
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syncScrollBars();
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}
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});
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addPaintListener((final PaintEvent event) -> paint(event.gc));
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painterList = new LinkedList<>();
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origin = new Point(0, 0);
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selectionListeners = new LinkedList<>();
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cursorPainters= new ArrayList<>();
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wave2painterMap=new HashMap<>();
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initScrollBars();
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// order is important: it is bottom to top
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trackAreaPainter=new TrackAreaPainter(this);
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painterList.add(trackAreaPainter);
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arrowPainter=new ArrowPainter(this, IWaveformView.NEXT_PREV_IN_STREAM);
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painterList.add(arrowPainter);
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rulerPainter=new RulerPainter(this);
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painterList.add(rulerPainter);
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CursorPainter cp = new CursorPainter(this, scaleFactor * 10, cursorPainters.size()-1);
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painterList.add(cp);
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cursorPainters.add(cp);
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CursorPainter marker = new CursorPainter(this, scaleFactor * 100, cursorPainters.size()-1);
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painterList.add(marker);
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cursorPainters.add(marker);
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wave2painterMap=new HashMap<>();
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}
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public void addCursoPainter(CursorPainter cursorPainter){
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painterList.add(cursorPainter);
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cursorPainters.add(cursorPainter);
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}
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public void setHighliteRelation(RelationType relationType){
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if(arrowPainter!=null){
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boolean redraw = arrowPainter.getHighlightType()!=relationType;
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arrowPainter.setHighlightType(relationType);
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if(redraw) redraw();
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}
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}
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public Point getOrigin() {
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return origin;
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}
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public int getWidth() {
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return getClientArea().width;
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}
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public void setOrigin(Point origin) {
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setOrigin(origin.x, origin.y);
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}
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public void setOrigin(int x, int y) {
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checkWidget();
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ScrollBar hBar = getHorizontalBar();
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hBar.setSelection(-x);
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x = -hBar.getSelection();
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ScrollBar vBar = getVerticalBar();
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vBar.setSelection(-y);
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y = -vBar.getSelection();
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origin.x = x;
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origin.y = y;
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syncScrollBars();
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}
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public long getMaxTime() {
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return maxTime;
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}
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public void setMaxTime(long maxTime) {
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this.maxTime = maxTime;
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syncScrollBars();
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}
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public int getZoomLevel() {
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return level;
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}
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public int getMaxZoomLevel(){
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return Constants.UNIT_MULTIPLIER.length*Constants.UNIT_STRING.length-1;
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}
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public void setZoomLevel(int level) {
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long tc=cursorPainters.get(0).getTime(); // cursor time
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setZoomLevel(level, tc);
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}
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public void setZoomLevel(int level, long centerTime) {
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//FIXME: keep center if zoom-out and cursor is not in view
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if(level<0) level = 0;
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long xc=centerTime/this.scaleFactor; // cursor total x-offset
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if(level<Constants.UNIT_MULTIPLIER.length*Constants.UNIT_STRING.length){
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this.scaleFactor = (long) Math.pow(10, level>>1);
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if(level%2==1) this.scaleFactor*=3;
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ITx tx = arrowPainter.getTx();
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arrowPainter.setTx(null);
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/*
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* xc = tc/oldScaleFactor
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* xoffs = xc+origin.x
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* xcn = tc/newScaleFactor
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* t0n = (xcn-xoffs)*scaleFactor
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*/
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long xoffs=xc+origin.x; // cursor offset relative to left border
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long xcn=centerTime/scaleFactor; // new total x-offset
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long originX=xcn-xoffs;
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if(originX>0) {
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origin.x=(int) -originX; // new cursor time offset relative to left border
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}else {
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origin.x=0;
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}
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syncScrollBars();
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arrowPainter.setTx(tx);
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redraw();
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this.level = level;
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}
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}
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public long getScaleFactor() {
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return scaleFactor;
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}
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public long getScaleFactorPow10() {
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int scale = level/Constants.UNIT_MULTIPLIER.length;
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double res = Math.pow(1000, scale);
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return (long) res;
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}
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public String getUnitStr(){
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return Constants.UNIT_STRING[level/Constants.UNIT_MULTIPLIER.length];
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}
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public int getUnitMultiplier(){
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return Constants.UNIT_MULTIPLIER[level%Constants.UNIT_MULTIPLIER.length];
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}
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public long getTimeForOffset(int xOffset){
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return (xOffset-origin.x) * scaleFactor;
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}
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public void addPainter(IPainter painter) {
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painterList.add(painter);
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redraw();
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}
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public void removePainter(IPainter painter) {
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painterList.remove(painter);
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redraw();
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}
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public void clearAllWaveformPainter() {
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clearAllWaveformPainter(true);
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}
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void clearAllWaveformPainter(boolean update) {
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trackAreaPainter.trackVerticalOffset.clear();
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wave2painterMap.clear();
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if(update) syncScrollBars();
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}
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public void addWaveformPainter(IWaveformPainter painter) {
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addWaveformPainter(painter, true);
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}
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void addWaveformPainter(IWaveformPainter painter, boolean update) {
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trackAreaPainter.addTrackPainter(painter);
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wave2painterMap.put(painter.getTrackEntry().waveform, painter);
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if(update) syncScrollBars();
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}
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public List<CursorPainter> getCursorPainters() {
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return cursorPainters;
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}
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/* Initialize the scrollbar and register listeners. */
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private void initScrollBars() {
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ScrollBar horizontal = getHorizontalBar();
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horizontal.setEnabled(false);
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horizontal.setVisible(true);
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horizontal.addSelectionListener(new SelectionAdapter() {
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@Override
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public void widgetSelected(SelectionEvent event) {
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if (painterList.isEmpty())
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return;
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setOrigin(-((ScrollBar) event.widget).getSelection(), origin.y);
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}
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});
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ScrollBar vertical = getVerticalBar();
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vertical.setEnabled(false);
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vertical.setVisible(true);
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vertical.addSelectionListener(new SelectionAdapter() {
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@Override
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public void widgetSelected(SelectionEvent event) {
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if (painterList.isEmpty())
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return;
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setOrigin(origin.x, -((ScrollBar) event.widget).getSelection());
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}
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});
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}
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/**
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* Synchronize the scrollbar with the image. If the transform is out of
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* range, it will correct it. This function considers only following factors
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* :<b> transform, image size, client area</b>.
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*/
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public void syncScrollBars() {
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if (painterList.isEmpty()) {
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redraw();
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return;
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}
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int height = trackAreaPainter.getHeight(); // incl. Ruler
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long width = maxTime / scaleFactor;
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Rectangle clientArea=getClientArea();
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ScrollBar horizontal = getHorizontalBar();
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horizontal.setIncrement(getClientArea().width / 100);
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horizontal.setPageIncrement(getClientArea().width);
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int clientWidthw = clientArea.width;
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if (width > clientWidthw) { /* image is wider than client area */
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horizontal.setMinimum(0);
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horizontal.setMaximum((int)width);
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horizontal.setEnabled(true);
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if (-origin.x > horizontal.getMaximum() - clientWidthw) {
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origin.x = -horizontal.getMaximum() + clientWidthw;
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}
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} else { /* image is narrower than client area */
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horizontal.setEnabled(false);
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}
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horizontal.setThumb(clientWidthw);
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horizontal.setSelection(-origin.x);
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ScrollBar vertical = getVerticalBar();
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vertical.setIncrement(getClientArea().height / 100);
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vertical.setPageIncrement(getClientArea().height);
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int clientHeighth = clientArea.height;
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if (height > clientHeighth) { /* image is higher than client area */
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vertical.setMinimum(0);
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vertical.setMaximum(height);
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vertical.setEnabled(true);
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if ( -origin.y > vertical.getMaximum() - clientHeighth) {
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origin.y = -vertical.getMaximum() + clientHeighth;
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}
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} else { /* image is less higher than client area */
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vertical.setMaximum(clientHeighth);
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vertical.setEnabled(false);
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}
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vertical.setThumb(clientHeighth);
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vertical.setSelection(-origin.y);
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redraw();
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fireSelectionEvent();
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}
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/* Paint function */
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private void paint(GC gc) {
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Point pt = getSize();
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if(pt.x==0 || pt.y==0) return;
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Rectangle clientRect = getClientArea(); /* Canvas' painting area */
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GC thisGc = gc;
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Image dBackingImg = null;
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if(doubleBuffering) {
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dBackingImg = new Image(getDisplay(), pt.x, pt.y);
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thisGc = new GC(dBackingImg);
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thisGc.setBackground(gc.getBackground());
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thisGc.setForeground(gc.getForeground());
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thisGc.setFont(gc.getFont());
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}
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Projection p = new Projection(thisGc);
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p.setTranslation(origin);
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if (!painterList.isEmpty() ) {
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for (IPainter painter : painterList)
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painter.paintArea(p, clientRect);
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} else {
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gc.fillRectangle(clientRect);
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initScrollBars();
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}
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if(doubleBuffering) {
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gc.drawImage(dBackingImg, 0, 0);
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if(dBackingImg!=null) dBackingImg.dispose();
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thisGc.dispose();
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}
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}
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public List<Object> getElementsAt(Point point) {
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LinkedList<Object> result=new LinkedList<>();
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for (IPainter p : Lists.reverse(painterList)) {
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if (p instanceof TrackAreaPainter) {
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int y = point.y - origin.y;
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int x = point.x - origin.x;
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Entry<Integer, IWaveformPainter> entry = trackAreaPainter.trackVerticalOffset.floorEntry(y);
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if (entry != null) {
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if (entry.getValue() instanceof StreamPainter) {
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ITx tx = ((StreamPainter) entry.getValue()).getClicked(new Point(x, y - entry.getKey()));
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if(tx!=null)
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result.add(tx);
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}
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result.add(entry.getValue().getTrackEntry());
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}
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} else if (p instanceof CursorPainter) {
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if (Math.abs(point.x - origin.x - ((CursorPainter) p).getTime()/scaleFactor) < 2) {
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result.add(p);
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}
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}
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}
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return result;
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}
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public List<Object> getEntriesAtPosition(IWaveform iWaveform, int i) {
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LinkedList<Object> result=new LinkedList<>();
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int x = i - origin.x;
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for(IWaveformPainter p: wave2painterMap.values()){
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if (p instanceof StreamPainter && ((StreamPainter)p).getStream()==iWaveform) {
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result.add(((StreamPainter) p).getClicked(new Point(x, styleProvider.getTrackHeight()/2)));
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}
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}
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return result;
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}
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public void setSelected(ITx currentSelection) {
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this.currentSelection = currentSelection;
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if (currentSelection != null)
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reveal(currentSelection);
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arrowPainter.setTx(currentSelection);
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redraw();
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}
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public void reveal(ITx tx) {
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int lower = (int) (tx.getBeginTime() / scaleFactor);
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int higher = (int) (tx.getEndTime() / scaleFactor);
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Point size = getSize();
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size.x -= getVerticalBar().getSize().x + 2;
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size.y -= getHorizontalBar().getSize().y;
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if (lower < -origin.x) {
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setOrigin(-lower, origin.y);
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} else if (higher > (size.x - origin.x)) {
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setOrigin(size.x - higher, origin.y);
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}
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for (IWaveformPainter painter : wave2painterMap.values()) {
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if (painter instanceof StreamPainter && ((StreamPainter) painter).getStream() == tx.getStream()) {
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Entry<Long, IEvent[]> entry = tx.getStream().getEvents().floorEntry(tx.getBeginTime());
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Optional<IEvent> res = Arrays.stream(entry.getValue()).filter(e -> ((ITxEvent)e).getTransaction().equals(tx)).findFirst();
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if(res.isPresent()) {
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int top = painter.getVerticalOffset() + styleProvider.getTrackHeight() * ((ITxEvent)res.get()).getRowIndex();
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int bottom = top + styleProvider.getTrackHeight();
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if (top < -origin.y) {
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setOrigin(origin.x, -(top-styleProvider.getTrackHeight()));
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} else if (bottom > (size.y - origin.y)) {
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setOrigin(origin.x, size.y - bottom);
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}
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}
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}
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}
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}
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public void reveal(IWaveform waveform) {
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for (IWaveformPainter painter : wave2painterMap.values()) {
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TrackEntry te = painter.getTrackEntry();
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if(te.waveform == waveform) {
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Point size = getSize();
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size.y -=+rulerHeight;
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ScrollBar sb = getHorizontalBar();
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if((sb.getStyle()&SWT.SCROLLBAR_OVERLAY)!=0 && sb.isVisible())
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size.y-= getHorizontalBar().getSize().y;
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int top = te.vOffset;
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int bottom = top + styleProvider.getTrackHeight();
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if (top < -origin.y) {
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setOrigin(origin.x, -(top-styleProvider.getTrackHeight()));
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} else if (bottom > (size.y - origin.y)) {
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setOrigin(origin.x, size.y - bottom);
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}
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}
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}
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}
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public void reveal(long time) {
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int scaledTime = (int) (time / scaleFactor);
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Point size = getSize();
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size.x -= getVerticalBar().getSize().x + 2;
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size.y -= getHorizontalBar().getSize().y;
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if (scaledTime < -origin.x) {
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setOrigin(-scaledTime+10, origin.y);
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} else if (scaledTime > (size.x - origin.x)) {
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setOrigin(size.x - scaledTime-30, origin.y);
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}
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}
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public int getRulerHeight() {
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return rulerHeight;
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}
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public void setRulerHeight(int rulerHeight) {
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this.rulerHeight = rulerHeight;
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}
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public void addSelectionListener(SelectionAdapter selectionAdapter) {
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selectionListeners.add(selectionAdapter);
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}
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public void removeSelectionListener(SelectionAdapter selectionAdapter) {
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selectionListeners.remove(selectionAdapter);
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}
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/**
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*
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*/
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protected void fireSelectionEvent() {
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Event e = new Event();
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e.widget = this;
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e.detail=SWT.SELECTED;
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e.type=SWT.Selection;
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SelectionEvent ev = new SelectionEvent(e);
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ev.x = origin.x;
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ev.y = origin.y;
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for (SelectionAdapter a : selectionListeners) {
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a.widgetSelected(ev);
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}
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}
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long getMaxVisibleTime() {
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return (getClientArea().width+origin.x)*scaleFactor;
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}
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long getMinVisibleTime() {
|
|
return origin.x * scaleFactor;
|
|
}
|
|
|
|
public void setStyleProvider(IWaveformStyleProvider styleProvider) {
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|
this.styleProvider=styleProvider;
|
|
redraw();
|
|
}
|
|
}
|