CaptureWidgetImageGC.java Source code

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Here is the source code for CaptureWidgetImageGC.java

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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: capture a widget image with a GC
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableItem;

public class CaptureWidgetImageGC {

    public static void main(String[] args) {
        final Display display = new Display();
        final Shell shell = new Shell(display);
        shell.setText("Widget");

        final Table table = new Table(shell, SWT.MULTI);
        table.setLinesVisible(true);
        table.setBounds(10, 10, 100, 100);
        for (int i = 0; i < 9; i++) {
            new TableItem(table, SWT.NONE).setText("item" + i);
        }

        Button button = new Button(shell, SWT.PUSH);
        button.setText("Capture");
        button.pack();
        button.setLocation(10, 140);
        button.addListener(SWT.Selection, new Listener() {
            public void handleEvent(Event event) {
                Point tableSize = table.getSize();
                GC gc = new GC(table);
                final Image image = new Image(display, tableSize.x, tableSize.y);
                gc.copyArea(image, 0, 0);
                gc.dispose();

                Shell popup = new Shell(shell);
                popup.setText("Image");
                popup.addListener(SWT.Close, new Listener() {
                    public void handleEvent(Event e) {
                        image.dispose();
                    }
                });

                Canvas canvas = new Canvas(popup, SWT.NONE);
                canvas.setBounds(10, 10, tableSize.x + 10, tableSize.y + 10);
                canvas.addPaintListener(new PaintListener() {
                    public void paintControl(PaintEvent e) {
                        e.gc.drawImage(image, 0, 0);
                    }
                });
                popup.pack();
                popup.open();
            }
        });
        shell.pack();
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        display.dispose();
    }
}