Cursor: create a cursor from a source and a mask
/*
* Cursor example snippet: create a cursor from a source and a mask
*
* For a list of all SWT example snippets see
* http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
*/
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Cursor;
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.Display;
import org.eclipse.swt.widgets.Shell;
public class Snippet92 {
public static void main (String [] args) {
Display display = new Display();
Color white = display.getSystemColor (SWT.COLOR_WHITE);
Color black = display.getSystemColor (SWT.COLOR_BLACK);
//Create a source ImageData of depth 1 (monochrome)
PaletteData palette = new PaletteData (new RGB [] {white.getRGB(), black.getRGB(),});
ImageData sourceData = new ImageData (20, 20, 1, palette);
for (int i = 0; i < 10; i ++) {
for (int j = 0; j < 20; j++) {
sourceData.setPixel(i, j, 1);
}
}
//Create a mask ImageData of depth 1 (monochrome)
palette = new PaletteData (new RGB [] {white.getRGB(), black.getRGB(),});
ImageData maskData = new ImageData (20, 20, 1, palette);
for (int i = 0; i < 20; i ++) {
for (int j = 0; j < 10; j++) {
maskData.setPixel(i, j, 1);
}
}
//Create cursor
Cursor cursor = new Cursor(display, sourceData, maskData, 10, 10);
Shell shell = new Shell(display);
final Image source = new Image (display,sourceData);
final Image mask = new Image (display, maskData);
//Draw source and mask just to show what they look like
shell.addPaintListener(new PaintListener() {
public void paintControl(PaintEvent e) {
GC gc = e.gc;
gc.drawString("source: ", 10, 10);
gc.drawImage(source, 0, 0, 20, 20, 50, 10, 20, 20);
gc.drawString("mask: ",10, 40);
gc.drawImage(mask, 0, 0, 20, 20, 50, 40, 20, 20);
}
});
shell.setSize(150, 150);
shell.open();
shell.setCursor(cursor);
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
cursor.dispose();
source.dispose();
mask.dispose();
display.dispose();
}
}
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