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Code Issues Wiki Activity

Bug 458671 - [visualizer] add an example of using an image on graphic

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Change-Id: Idf604db4d0138b489d9ceda81d5848a5e4698dbb
This commit is contained in:
Marc Dumais 2015-01-28 14:22:27 -05:00
parent 4d22e11d4b
commit da922a8b01
2 changed files with 51 additions and 3 deletions
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visualizer/org.eclipse.cdt.visualizer.examples/images/sgv-banner.png Normal file
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54
visualizer/org.eclipse.cdt.visualizer.examples/src/org/eclipse/cdt/visualizer/examples/sourcegraph/SourceGraphControl.java
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@ -1,5 +1,5 @@
/*******************************************************************************
* Copyright (c) 2012 Tilera Corporation and others.
* Copyright (c) 2012, 2015 Tilera Corporation and others.
* 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
@ -7,20 +7,31 @@
*
* Contributors:
* William R. Swanson (Tilera Corporation)
* Marc Dumais (Ericsson) - Bug 458671
*******************************************************************************/
package org.eclipse.cdt.visualizer.examples.sourcegraph;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Hashtable;
import org.eclipse.cdt.visualizer.examples.VisualizerExamplesPlugin;
import org.eclipse.cdt.visualizer.ui.canvas.BufferedCanvas;
import org.eclipse.cdt.visualizer.ui.canvas.GraphicObject;
import org.eclipse.cdt.visualizer.ui.util.Colors;
import org.eclipse.core.runtime.FileLocator;
import org.eclipse.core.runtime.Platform;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Composite;
import org.osgi.framework.Bundle;
// ---------------------------------------------------------------------------
// SourceGraphControl
@ -37,11 +48,17 @@ public class SourceGraphControl extends BufferedCanvas
/** Line height used in drawing graph and computing control height. */
public static final int LINE_HEIGHT = 20;
/** Path for the banner image, relative to plug-in root path */
protected static final String BANNER_FILE = "images/sgv-banner.png"; //$NON-NLS-1$
protected static final int BANNER_HEIGHT = 50;
// --- members ---
/** Text we're currently displaying. */
protected String m_sourceText = ""; //$NON-NLS-1$
protected GraphicObject m_banner;
/** Data structure used to hold character stats. */
class CharStat
implements Comparable<CharStat>
@ -72,6 +89,7 @@ public class SourceGraphControl extends BufferedCanvas
public SourceGraphControl(Composite parent) {
super(parent);
m_characters = new ArrayList<CharStat>();
m_banner = new GraphicObject();
}
/** Dispose method. */
@ -139,6 +157,10 @@ public class SourceGraphControl extends BufferedCanvas
Rectangle bounds = getBounds();
int height = MARGIN * 2 + m_characters.size() * LINE_HEIGHT;
// reserve space for banner at the top
height = height + BANNER_HEIGHT;
bounds.height = height;
setBounds(bounds);
@ -162,11 +184,22 @@ public class SourceGraphControl extends BufferedCanvas
int lh = LINE_HEIGHT;
int x = margin;
int y = margin;
// skip banner space
int y = BANNER_HEIGHT + margin;
Rectangle area = getClientArea();
int w = area.width - margin*2 - tw;
// position and size banner container object
m_banner.setBounds(new Rectangle(x - margin, margin, area.width, BANNER_HEIGHT - margin));
// draw banner
try {
m_banner.drawImage(gc, getAbsFilePath(BANNER_FILE), GraphicObject.ImageSizeAndPosition.MAXSIZE);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
int maxcount = 0;
for (CharStat cs : m_characters)
{
@ -210,4 +243,19 @@ public class SourceGraphControl extends BufferedCanvas
public void resized(Rectangle bounds) {
refresh();
}
/** Get the absolute path of a file, from the path relative to plugin root. */
private String getAbsFilePath(String relPath) {
Bundle bundle = Platform.getBundle(VisualizerExamplesPlugin.PLUGIN_ID);
URL fileURL = bundle.getEntry(relPath);
File file = null;
try {
file = new File(FileLocator.resolve(fileURL).toURI());
} catch (URISyntaxException | IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return file.getAbsolutePath();
}
}