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== 17. Capture a widget image with a GC ==



<source lang="java">
/*******************************************************************************
* 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();
}
}</source>



== 17. Full Screen Capture ==



<source lang="java">
/*******************************************************************************
* 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: take a screen shot 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.custom.ScrolledComposite;
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.layout.FillLayout;
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;
public class ScreenShotWithGC {
public static void main(String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
Button button = new Button(shell, SWT.PUSH);
button.setText("Capture");
button.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event event) {
/* Take the screen shot */
GC gc = new GC(display);
final Image image = new Image(display, display.getBounds());
gc.copyArea(image, 0, 0);
gc.dispose();
Shell popup = new Shell(shell, SWT.SHELL_TRIM);
popup.setLayout(new FillLayout());
popup.setText("Image");
popup.setBounds(50, 50, 200, 200);
popup.addListener(SWT.Close, new Listener() {
public void handleEvent(Event e) {
image.dispose();
}
});
ScrolledComposite sc = new ScrolledComposite(popup, SWT.V_SCROLL | SWT.H_SCROLL);
Canvas canvas = new Canvas(sc, SWT.NONE);
sc.setContent(canvas);
canvas.setBounds(display.getBounds());
canvas.addPaintListener(new PaintListener() {
public void paintControl(PaintEvent e) {
e.gc.drawImage(image, 0, 0);
}
});
popup.open();
}
});
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}</source>



== 17. Screenshot(screen capture) by GC ==



<source lang="java">
/*******************************************************************************
* 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.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;
public class ScreenshotCaptureGC {
public static void main(String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display);
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) {
GC gc = new GC(display);
final Image image = new Image(display, 400,400);
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, 400 + 10, 400 + 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();
}
}</source>

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