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/*******************************************************************************
* Copyright (c) 2006 IBM Corporation.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - Jeff Briggs, Henry Hughes, Ryan Morse
*******************************************************************************/
package org.eclipse.linuxtools.systemtap.ui.graphingapi.ui.graphs;
import org.eclipse.linuxtools.systemtap.ui.graphingapi.nonui.IGraphColorConstants;
import org.eclipse.linuxtools.systemtap.ui.graphingapi.nonui.adapters.ScrollAdapter;
import org.eclipse.linuxtools.systemtap.ui.graphingapi.nonui.structures.DataPoint;
import org.eclipse.linuxtools.systemtap.ui.graphingapi.nonui.structures.NumberType;
import org.eclipse.linuxtools.systemtap.ui.graphingapi.ui.widgets.GraphComposite;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.GC;
/**
* A line graph implementation for the graphing system.
* @author Ryan Morse
* @author Henry Hughes
*/
public class LineGraph extends AGraph implements IScrollGraph {
/**
* Default constructor for LineGraph. Simply invokes the constructor from <code>ScatterGraph</code>
* and fires the Update Event when its done, causing the graph to draw itself.
*/
public LineGraph(GraphComposite parent, int style, String title, ScrollAdapter adapter) {
super(parent, style, title, adapter);
this.adapter = adapter;
handleUpdateEvent();
}
@SuppressWarnings("unchecked")
public void paintElementList(GC gc) {
DataPoint[] points = new DataPoint[0];
Color temp = gc.getForeground();
Color c;
double xSize = super.getSize().x - (super.getXPadding()<<1);
xSize /= (super.getLocalWidth());
double ySize = super.getSize().y - (super.getYPadding()<<1);
ySize /= (super.getLocalHeight());
double px, py;
double px2, py2;
for(int j=0; j<elementList.length; j++) {
points = (DataPoint[])elementList[j].toArray(points);
c = new Color(getDisplay(), IGraphColorConstants.COLORS[j]);
gc.setForeground(c);
px2 = 0;
py2 = super.getSize().y - super.getYPadding();
for(int i=0; i<points.length; i++) {
px = (points[i].x-super.getLocalXMin());
px *= xSize;
px += super.getXPadding();
py = super.getLocalYMax() - points[i].y;
py *= ySize;
py += super.getYPadding();
gc.drawLine((int)px, (int)py, (int)px2, (int)py2);
px2 = px;
py2 = py;
}
}
gc.setForeground(temp);
}
public boolean isMultiGraph() {
return adapter.getSeriesCount() > 0;
}
/**
* Updates the graph when the <code>DataSet</code> has more data, adding the new samples to the graph.
*/
public void handleUpdateEvent() {
if(null == adapter) return;
this.getDisplay().syncExec(new Runnable() {
@SuppressWarnings("unchecked")
public void run() {
Object[][] data = adapter.getData(removedItems, adapter.getRecordCount());
if(normalize) {
double max;
for(int j,i=0; i<adapter.getSeriesCount(); i++) {
elementList[i].clear(); //TODO: Only temparary
max = adapter.getYSeriesMax(i, removedItems, adapter.getRecordCount()).doubleValue() / 100;
for(j=0; j<data.length; j++) {
elementList[i].add(new DataPoint(NumberType.obj2num(data[j][0]).doubleValue(),
NumberType.obj2num(data[j][i+1]).doubleValue() / max));
}
}
} else {
for(int j,i=0; i<adapter.getSeriesCount(); i++) {
elementList[i].clear(); //TODO: Only temparary
for(j=0; j<data.length; j++) {
elementList[i].add(new DataPoint(NumberType.obj2num(data[j][0]).doubleValue(),
NumberType.obj2num(data[j][i+1]).doubleValue()));
}
}
}
}
});
this.repaint();
}
private ScrollAdapter adapter;
public static final String ID = "org.eclipse.linuxtools.systemtap.ui.graphingapi.ui.graphs.linegraph";
}
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