org.eclipse.swt.snippets.Snippet10.java Source code

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Here is the source code for org.eclipse.swt.snippets.Snippet10.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;

/*
 * Draw using transformations, paths and alpha blending
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 *
 * @since 3.1
 */
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;

public class Snippet10 {
    public static void main(String[] args) {
        final Display display = new Display();
        final Shell shell = new Shell(display);
        shell.setText("Advanced Graphics");
        FontData fd = shell.getFont().getFontData()[0];
        final Font font = new Font(display, fd.getName(), 60, SWT.BOLD | SWT.ITALIC);
        final Image image = new Image(display, 640, 480);
        final Rectangle rect = image.getBounds();
        GC gc = new GC(image);
        gc.setBackground(display.getSystemColor(SWT.COLOR_RED));
        gc.fillOval(rect.x, rect.y, rect.width, rect.height);
        gc.dispose();
        shell.addListener(SWT.Paint, event -> {
            GC gc1 = event.gc;
            Transform tr = new Transform(display);
            tr.translate(50, 120);
            tr.rotate(-30);
            gc1.drawImage(image, 0, 0, rect.width, rect.height, 0, 0, rect.width / 2, rect.height / 2);
            gc1.setAlpha(100);
            gc1.setTransform(tr);
            Path path = new Path(display);
            path.addString("SWT", 0, 0, font);
            gc1.setBackground(display.getSystemColor(SWT.COLOR_GREEN));
            gc1.setForeground(display.getSystemColor(SWT.COLOR_BLUE));
            gc1.fillPath(path);
            gc1.drawPath(path);
            tr.dispose();
            path.dispose();
        });
        shell.setSize(shell.computeSize(rect.width / 2, rect.height / 2));
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        image.dispose();
        font.dispose();
        display.dispose();
    }
}