43 lines
1.3 KiB
Java
43 lines
1.3 KiB
Java
package com.minres.scviewer.ui.swt;
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import java.util.Map.Entry;
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import org.eclipse.swt.SWT;
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import org.eclipse.swt.graphics.GC;
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import org.eclipse.swt.graphics.Rectangle;
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class TrackPainter implements IPainter {
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/**
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*
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*/
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private final WaveformCanvas waveCanvas;
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/**
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* @param txDisplay
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*/
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TrackPainter(WaveformCanvas waveCanvas) {
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this.waveCanvas = waveCanvas;
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}
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public void paintArea(GC gc, Rectangle area) {
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if(this.waveCanvas.streams.size()>0){
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Integer firstKey=this.waveCanvas.trackVerticalOffset.floorKey(area.y);
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if(firstKey==null) firstKey=this.waveCanvas.trackVerticalOffset.firstKey();
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Integer lastKey = this.waveCanvas.trackVerticalOffset.floorKey(area.y+area.height);
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Rectangle subArea = new Rectangle(area.x, 0, area.width, 0);
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if(lastKey==firstKey){
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subArea.y=firstKey;
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IWaveformPainter p = this.waveCanvas.trackVerticalOffset.get(firstKey);
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subArea.height=p.getMinHeight();
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p.paintArea(gc, subArea);
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}else{
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for(Entry<Integer, IWaveformPainter> entry : this.waveCanvas.trackVerticalOffset.subMap(firstKey, true, lastKey, true).entrySet()){
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subArea.y=entry.getKey();
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subArea.height=entry.getValue().getMinHeight();
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entry.getValue().paintArea(gc, subArea);
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}
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}
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}
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}
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} |