implement GetScreenBounds. fixes gtk version of bug 5998. r:pavlov@netscape.com

widget/src/gtk/nsWindow.cpp

@@ -186,6 +186,8 @@ NS_IMETHODIMP nsWindow::WidgetToScreen(const nsRect& aOldRect, nsRect& aNewRect)
   gint x;
   gint y;
 
+  aNewRect.width = aOldRect.width;
+  aNewRect.height = aOldRect.height;
   if (mIsToplevel && mShell)
   {
     if (mMozArea->window)
@@ -2185,6 +2187,12 @@ NS_IMETHODIMP nsWindow::EndResizingChildren(void)
   return NS_OK;
 }
 
+NS_IMETHODIMP nsWindow::GetScreenBounds(nsRect &aRect)
+{
+  WidgetToScreen(mBounds, aRect);
+  return NS_OK;
+}
+
 PRBool nsWindow::OnKey(nsKeyEvent &aEvent)
 {
 

widget/src/gtk/nsWindow.h

@@ -77,6 +77,8 @@ public:
   NS_IMETHOD           BeginResizingChildren(void);
   NS_IMETHOD           EndResizingChildren(void);
 
+  NS_IMETHOD           GetScreenBounds(nsRect &aRect);
+
   NS_IMETHOD           CaptureRollupEvents(nsIRollupListener * aListener,
                                            PRBool aDoCapture,
                                            PRBool aConsumeRollupEvent);