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add drag area to wavefrom view

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This commit is contained in:
Eyck Jentzsch
2020-03-13 19:51:07 +01:00
parent 18f2a110f0
commit 2b7c9a240f
2 changed files with 48 additions and 25 deletions
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52
com.minres.scviewer.database.ui.swt/src/com/minres/scviewer/database/swt/internal/WaveformViewer.java
View File

@ -40,6 +40,7 @@ import org.eclipse.swt.dnd.DND;
import org.eclipse.swt.dnd.DragSource;
import org.eclipse.swt.dnd.DragSourceAdapter;
import org.eclipse.swt.dnd.DragSourceEvent;
import org.eclipse.swt.dnd.DragSourceListener;
import org.eclipse.swt.dnd.DropTarget;
import org.eclipse.swt.dnd.DropTargetAdapter;
import org.eclipse.swt.dnd.DropTargetEvent;
@ -50,6 +51,9 @@ import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.events.MouseAdapter;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseListener;
import org.eclipse.swt.events.MouseMoveListener;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Font;
@ -139,14 +143,21 @@ public class WaveformViewer implements IWaveformViewer {
}
}
};
protected MouseListener waveformMouseListener = new MouseAdapter(){
Point start;
class WaveformMouseListener implements MouseMoveListener, MouseListener, PaintListener {
Point start, end;
List<Object> initialSelected;
boolean down=false;
@Override
public void mouseDoubleClick(MouseEvent e) {
}
@Override
public void mouseDown(MouseEvent e) {
start=new Point(e.x, e.y);
end=new Point(e.x, e.y);
down=true;
if((e.stateMask&SWT.MODIFIER_MASK)!=0) return; //don't react on modifier
if (e.button == 1) {
initialSelected = waveformCanvas.getClicked(start);
@ -156,11 +167,35 @@ public class WaveformViewer implements IWaveformViewer {
}
}
@Override
public void mouseMove(MouseEvent e) {
if(down) {
end=new Point(e.x, e.y);
asyncUpdate(e.widget);
}
}
@Override
public void paintControl(PaintEvent e) {
if(down) {
GC gc = e.gc;
gc.setAlpha(128);
int minX = Math.min(start.x, end.x);
int maxX = Math.max(start.x, end.x);
int width = maxX - minX;
gc.fillRectangle(minX, 0, width, e.height);
}
}
@Override
public void mouseUp(MouseEvent e) {
down=false;
if(start==null) return;
if((e.stateMask&SWT.MODIFIER_MASK&~SWT.SHIFT)!=0) return; //don't react on modifier
if (e.button == 1 && ((e.stateMask&SWT.SHIFT)==0)) {
if((e.stateMask&SWT.MODIFIER_MASK&~SWT.SHIFT)!=0) return; //don't react on modifier except shift
if(!start.equals(end)){
asyncUpdate(e.widget);
} 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(e));
@ -169,11 +204,12 @@ public class WaveformViewer implements IWaveformViewer {
asyncUpdate(e.widget);
}
}else if (e.button == 2 ||(e.button==1 && (e.stateMask&SWT.SHIFT)!=0)) {
// set marker (button 1 and shift)
setMarkerTime(snapOffsetToEvent(e), selectedMarker);
asyncUpdate(e.widget);
}
}
protected long snapOffsetToEvent(MouseEvent e) {
long time= waveformCanvas.getTimeForOffset(e.x);
long scaling=5*waveformCanvas.getScaleFactor();
@ -209,7 +245,9 @@ public class WaveformViewer implements IWaveformViewer {
}
return time;
}
};
protected WaveformMouseListener waveformMouseListener = new WaveformMouseListener();
public WaveformViewer(Composite parent) {
pcs=new PropertyChangeSupport(this);
@ -309,6 +347,8 @@ public class WaveformViewer implements IWaveformViewer {
waveformCanvas.setMaxTime(1);
waveformCanvas.addMouseListener(waveformMouseListener);
waveformCanvas.addMouseMoveListener(waveformMouseListener);
waveformCanvas.addPaintListener(waveformMouseListener);
nameListScrolled.getVerticalBar().addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {