IncLineRenderer.java :  » Profiler » gcviewer » com » tagtraum » perf » gcviewer » renderer » Java Open Source

package com.tagtraum.perf.gcviewer.renderer;

import com.tagtraum.perf.gcviewer.ChartRenderer;
import com.tagtraum.perf.gcviewer.GCEvent;
import com.tagtraum.perf.gcviewer.ModelChartImpl;

import java.awt.*;
import java.util.Iterator;

/**
 * IncLineRenderer.
 *
 * Date: Jun 2, 2005
 * Time: 3:31:21 PM
 * @author <a href="mailto:hs@tagtraum.com">Hendrik Schreiber</a>
 */
public class IncLineRenderer extends ChartRenderer {
    public static final Paint DEFAULT_LINEPAINT = Color.CYAN;

    public IncLineRenderer(ModelChartImpl modelChart) {
        super(modelChart);
        setLinePaint(DEFAULT_LINEPAINT);
    }

    public void paintComponent(Graphics2D g2d) {
        final double scaleFactor = getModelChart().getScaleFactor();
        final int height = getHeight();
        int lastScaledTimestamp = Integer.MIN_VALUE;
        for (Iterator i = getModelChart().getModel().getGCEvents(); i.hasNext();) {
            final Object o = i.next();
            if (o instanceof GCEvent) {
                GCEvent event = (GCEvent) o;
                if (event.isInc()) {
                    final int scaledTimestamp = (int) (scaleFactor * event.getTimestamp());
                    if (scaledTimestamp != lastScaledTimestamp) {
                        g2d.drawLine(scaledTimestamp, 0, scaledTimestamp, height);
                        lastScaledTimestamp = scaledTimestamp;
                    }
                }
            }
        }
    }

}