/**
* Copyright (C) 2006 Aelitis, All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* AELITIS, SAS au capital de 63.529,40 euros
* 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
*
*/
package com.aelitis.azureus.ui.swt.test;
import org.eclipse.swt.SWT;
import org.eclipse.swt.browser.Browser;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.*;
/**
* Eclipse Bug 164512:
* seizure inducing flicker on resize in Browser w/parent having paint listener
* https://bugs.eclipse.org/bugs/show_bug.cgi?id=164512
*
* @author TuxPaper
* @created Nov 13, 2006
*
*/
public class BrowserFlicker
{
final static int INDENT = 10;
public static void main(String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display, SWT.SHELL_TRIM);
FormData fd;
shell.setLayout(new FormLayout());
final Composite right = new Composite(shell, SWT.NONE);
right.setLayout(new FormLayout());
final Browser b = new Browser(right, SWT.BORDER);
fd = new FormData();
fd.top = new FormAttachment(0, INDENT);
fd.left = new FormAttachment(0, INDENT);
fd.right = new FormAttachment(100, -INDENT);
fd.bottom = new FormAttachment(100, -INDENT);
b.setLayoutData(fd);
// black so we can see the flicker better
b.setText("<html><body BGCOLOR=black></body></html>");
fd = new FormData();
fd.top = new FormAttachment(0);
fd.left = new FormAttachment(50);
fd.bottom = new FormAttachment(100);
fd.right = new FormAttachment(100);
right.setLayoutData(fd);
shell.addListener(SWT.Resize, new Listener() {
public void handleEvent(Event event) {
// code here to resulting in a need to re-layout
right.getParent().layout();
}
});
Listener l = new Listener() {
public void handleEvent(Event event) {
Point size = ((Control) event.widget).getSize();
event.gc.setBackground(display.getSystemColor(SWT.COLOR_BLUE));
event.gc.fillOval(0, 0, INDENT, INDENT);
event.gc.fillOval(size.x - INDENT, 0, INDENT, INDENT);
event.gc.fillOval(size.x - INDENT, size.y - INDENT, INDENT, INDENT);
event.gc.fillOval(0, size.y - INDENT, INDENT, INDENT);
// mimic other work
try {
Thread.sleep(10);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
};
right.addListener(SWT.Paint, l);
shell.setSize(200, 200);
shell.open();
while (!shell.isDisposed()) {
if (display.readAndDispatch()) {
display.sleep();
}
}
}
}
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