Bug 144590 [Accessibility] BIRT custom controls should support active accessibility
Description: BIRT custom controls should support active accessibility. There are some custom controls in BIRT GUI. In Eclipse, when implementing a custom control you should also implement some or all of (as they apply to your control) org.eclipse.swt.accessibility.AccessibleListener, org.eclipse.swt.accessibility.AccessibleControlListener and org.eclipse.swt.accessibility.AccessibleTextListener. Also, the custom control can notify Active Accessibility of changes within the control using org.eclipse.swt.accessibility.Accessible methods such as setFocus(), selectionChanged(), textCaretMoved(), textChanged() and textSelectionChanged().
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/util/graphics/ImageCanvas.java
}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.swt.widgets.Widget#dispose()
	 */
	public void dispose( )
	{
		if ( sourceImage != null && !sourceImage.isDisposed( ) )
		{
			sourceImage.dispose( );
		}
		if ( screenImage != null && !screenImage.isDisposed( ) )
		{
			screenImage.dispose( );
		}
	}
	private void paint( GC gc )
	{
		Rectangle clientRect = getClientArea( );
		if ( sourceImage != null )
		{
			Rectangle imageRect = TransformUtil.inverseTransformRect( transform,
					clientRect );
			int gap = 2;
			imageRect.x -= gap;
			imageRect.y -= gap;
			imageRect.width += 2 * gap;
			imageRect.height += 2 * gap;
			Rectangle imageBound = sourceImage.getBounds( );