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/*******************************************************************************
* Copyright (c) 2000, 2006 IBM 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
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.examples.graphics;
/*
* Drawing with transformations, paths and alpha blending
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*/
import java.io.IOException;
import java.io.InputStream;
import java.util.ResourceBundle;
import org.eclipse.swt.SWT;
import org.eclipse.swt.SWTException;
import org.eclipse.swt.graphics.Device;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Path;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.graphics.Transform;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.MessageBox;
import org.eclipse.swt.widgets.Shell;
public class AdvancedGraphics {
private static final ResourceBundle RESOURCE_BUNDLE = ResourceBundle.getBundle("examples_graphics");
static Image loadImage (Device device, Class<AdvancedGraphics> clazz, String string) {
InputStream stream = clazz.getResourceAsStream (string);
if (stream == null) return null;
Image image = null;
try {
image = new Image (device, stream);
} catch (SWTException ex) {
} finally {
try {
stream.close ();
} catch (IOException ex) {}
}
return image;
}
public Shell open(final Display display) {
final Shell shell = new Shell(display);
shell.setText(RESOURCE_BUNDLE.getString("AdvancedGraphics")); //$NON-NLS-1$
try {
Path path = new Path(display);
path.dispose();
} catch (SWTException e) {
MessageBox dialog = new MessageBox(shell, SWT.ICON_WARNING | SWT.OK);
dialog.setText(RESOURCE_BUNDLE.getString("Warning")); //$NON-NLS-1$
dialog.setMessage(RESOURCE_BUNDLE.getString("LibNotFound")); //$NON-NLS-1$
dialog.open();
shell.dispose();
return null;
}
FontData fd = shell.getFont().getFontData()[0];
final Font font = new Font(display, fd.getName(), 96, SWT.BOLD | SWT.ITALIC);
final Image image = loadImage(display, AdvancedGraphics.class, "irmaos.jpg");
final Rectangle rect = image.getBounds();
shell.addListener(SWT.Paint, new Listener() {
@Override
public void handleEvent(Event event) {
GC gc = event.gc;
Transform tr = new Transform(display);
tr.translate(rect.width / 4, rect.height / 2);
tr.rotate(-30);
if (image != null) {
gc.drawImage(image, 0, 0, rect.width, rect.height, 0, 0, rect.width, rect.height);
}
gc.setAlpha(100);
gc.setTransform(tr);
Path path = new Path(display);
path.addString("SWT", 0, 0, font);
gc.setBackground(display.getSystemColor(SWT.COLOR_GREEN));
gc.setForeground(display.getSystemColor(SWT.COLOR_BLUE));
gc.fillPath(path);
gc.drawPath(path);
tr.dispose();
path.dispose();
}
});
shell.setSize(shell.computeSize(rect.width, rect.height));
shell.open();
shell.addListener(SWT.Dispose, new Listener() {
@Override
public void handleEvent(Event event) {
if (image != null) image.dispose();
font.dispose();
}
});
return shell;
}
public static void main(String[] args) {
Display display = new Display();
Shell shell = new AdvancedGraphics().open(display);
while (shell != null && !shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}
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