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/*******************************************************************************
* Copyright (c) 2000, 2005 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;
/*
* Write an animated GIF to a file.
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*/
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;
public class Snippet194 {
Display display;
Color white, red, green, blue;
PaletteData palette;
Font font;
public static void main(String[] args) {
new Snippet194().run();
}
public void run() {
display = new Display();
RGB whiteRGB = new RGB(0xff, 0xff, 0xff);
RGB redRGB = new RGB(0xff, 0, 0);
RGB greenRGB = new RGB(0, 0xff, 0);
RGB blueRGB = new RGB(0, 0, 0xff);
palette = new PaletteData(new RGB[] {
whiteRGB, // 0
redRGB, // 1
greenRGB, // 2
blueRGB }); // 3
white = new Color(display, whiteRGB);
red = new Color(display, redRGB);
green = new Color(display, greenRGB);
blue = new Color(display, blueRGB);
font = new Font(display, "Comic Sans MS", 24, SWT.BOLD);
ImageData[] data = new ImageData[4];
data[0] = newFrame("", white, false, 0, 0, 101, 55, SWT.DM_FILL_NONE, 40);
data[1] = newFrame("S", red, true, 0, 0, 30, 55, SWT.DM_FILL_NONE, 40);
data[2] = newFrame("W", green, true, 28, 0, 39, 55, SWT.DM_FILL_NONE, 40);
data[3] = newFrame("T", blue, true, 69, 0, 32, 55, SWT.DM_FILL_BACKGROUND, 200);
ImageLoader loader = new ImageLoader();
loader.data = data;
loader.backgroundPixel = 0;
loader.logicalScreenHeight = data[0].height;
loader.logicalScreenWidth = data[0].width;
loader.repeatCount = 0; // run forever
loader.save("swt.gif", SWT.IMAGE_GIF);
white.dispose();
red.dispose();
green.dispose();
blue.dispose();
font.dispose();
display.dispose();
}
ImageData newFrame(String letter, Color color, boolean transparent, int x, int y, int width, int height, int disposalMethod, int delayTime) {
ImageData temp = new ImageData(width, height, 2, palette); // 4-color palette has depth 2
Image image = new Image(display, temp);
GC gc = new GC(image);
gc.setBackground(white);
gc.fillRectangle(0, 0, width, height);
gc.setForeground(color);
gc.setFont(font);
gc.drawString(letter, 5, 5);
gc.dispose();
ImageData frame = image.getImageData();
if (transparent) frame.transparentPixel = 0; // white
image.dispose();
frame.x = x;
frame.y = y;
frame.disposalMethod = disposalMethod;
frame.delayTime = delayTime;
return frame;
}
}
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