Capture a widget image with a GC
/*
* GC example snippet: capture a widget image with a GC
*
* 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.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 Snippet95 {
public static void main(String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display);
shell.setText("Widget");
shell.setBounds(10, 10, 200, 200);
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.setBounds(10, 140, 50, 20);
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.setBounds(50, 50, 200, 200);
popup.addListener(SWT.Close, new Listener() {
public void handleEvent(Event e) {
image.dispose();
}
});
Canvas canvas = new Canvas(popup, SWT.NONE);
canvas.setBounds(10, 10, 150, 150);
canvas.addPaintListener(new PaintListener() {
public void paintControl(PaintEvent e) {
e.gc.drawImage(image, 0, 0);
}
});
popup.open();
}
});
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}
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