package com.tagtraum.perf.gcviewer.renderer;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.RenderingHints;
import java.util.Iterator;
import com.tagtraum.perf.gcviewer.ChartRenderer;
import com.tagtraum.perf.gcviewer.ModelChartImpl;
import com.tagtraum.perf.gcviewer.model.ConcurrentGCEvent;
/**
* ConcurrentGcStardEndRenderer draws lines for every begin and end of a concurrent GC event. Start
* is cyan, end is pink.
*
* @author <a href="mailto:jwu@gmx.ch">Joerg Wuethrich</a>
* <p>created on: 30.10.2011</p>
*/
public class ConcurrentGcBegionEndRenderer extends ChartRenderer {
public static final Paint CONCURRENT_COLLECTION_BEGIN = Color.CYAN;
public static final Paint CONCURRENT_COLLECTION_END = Color.PINK;
public ConcurrentGcBegionEndRenderer(ModelChartImpl modelChart) {
super(modelChart);
setLinePaint(CONCURRENT_COLLECTION_BEGIN);
}
public void paintComponent(Graphics2D g2d) {
// make sure that we ignore the AntiAliasing flag as it does not make sense for vertical lines
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);
final double scaleFactor = getModelChart().getScaleFactor();
final int height = getHeight();
int lastScaledTimestampBegin = Integer.MIN_VALUE;
int lastScaledTimestampEnd = Integer.MIN_VALUE;
for (Iterator<ConcurrentGCEvent> i = getModelChart().getModel().getConcurrentGCEvents(); i.hasNext();) {
final ConcurrentGCEvent event = i.next();
if (event.isConcurrentCollectionStart()) {
final int scaledTimestamp = (int) (scaleFactor * (event.getTimestamp() - getModelChart().getModel().getFirstPauseTimeStamp()));
if (scaledTimestamp != lastScaledTimestampBegin) {
g2d.setPaint(CONCURRENT_COLLECTION_BEGIN);
g2d.drawLine(scaledTimestamp, 0, scaledTimestamp, height);
lastScaledTimestampBegin = scaledTimestamp;
}
}
else if (event.isConcurrentCollectionEnd()) {
final int scaledTimestamp = (int) (scaleFactor * (event.getTimestamp() - getModelChart().getModel().getFirstPauseTimeStamp()));
if (scaledTimestamp != lastScaledTimestampEnd) {
g2d.setPaint(CONCURRENT_COLLECTION_END);
g2d.drawLine(scaledTimestamp, 0, scaledTimestamp, height);
lastScaledTimestampEnd = scaledTimestamp;
}
}
}
}
}