org.eclipse.swt.snippets.Snippet92.java Source code

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Here is the source code for org.eclipse.swt.snippets.Snippet92.java

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/*******************************************************************************
 * Copyright (c) 2000, 2016 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.snippets;

/*
 * Cursor example snippet: create a cursor from a source and a mask
 *
 * 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 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(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(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);
        shell.setText("Snippet 92");
        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(e -> {
            GC gc = e.gc;
            gc.drawString("source: ", 10, 10);
            gc.drawImage(source, 0, 0, 20, 20, 60, 10, 20, 20);
            gc.drawString("mask: ", 10, 40);
            gc.drawImage(mask, 0, 0, 20, 20, 60, 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();
    }
}