Mega Code Archive
GC example snippet
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/*******************************************************************************
* Copyright (c) 2000, 2004 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.snippets;
/*
* GC example snippet: create an icon (in memory)
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*/
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class IconInMemory {
public static void main(String[] args) {
Display display = new Display();
Color red = display.getSystemColor(SWT.COLOR_RED);
Color white = display.getSystemColor(SWT.COLOR_WHITE);
Color black = display.getSystemColor(SWT.COLOR_BLACK);
Image image = new Image(display, 20, 20);
GC gc = new GC(image);
gc.setBackground(red);
gc.fillRectangle(5, 5, 10, 10);
gc.dispose();
ImageData imageData = image.getImageData();
PaletteData palette = new PaletteData(
new RGB[] { new RGB(0, 0, 0), new RGB(0xFF, 0xFF, 0xFF), });
ImageData maskData = new ImageData(20, 20, 1, palette);
Image mask = new Image(display, maskData);
gc = new GC(mask);
gc.setBackground(black);
gc.fillRectangle(0, 0, 20, 20);
gc.setBackground(white);
gc.fillRectangle(5, 5, 10, 10);
gc.dispose();
maskData = mask.getImageData();
Image icon = new Image(display, imageData, maskData);
Shell shell = new Shell(display);
Button button = new Button(shell, SWT.PUSH);
button.setImage(icon);
button.setSize(60, 60);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
icon.dispose();
image.dispose();
mask.dispose();
display.dispose();
}
}
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