[Qt/Win] Flash in QGraphicsWebView does not process hover correctly.

Reviewed by Simon Hausmann.

Mouse hover does not work as expected with the flash in some sites.
    - http://www.bbc.co.uk/ Hover over the map
    - http://www.barbie.com/ Hover over the menu items (Games, Videos)
The problem appears to be that Flash queries NPNVnetscapeWindow on every
mouse hover. I do not how flash uses this value but returning 0 when flash
is in windowless mode solves the problem (When using QGraphicsWebView we
inject wmode opaque, thereby putting the plugin in windowless mode).

https://bugs.webkit.org/show_bug.cgi?id=33591

Canonical link: https://commits.webkit.org/44731@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@53327 268f45cc-cd09-0410-ab3c-d52691b4dbfc

WebCore/ChangeLog

@@ -1,3 +1,22 @@
+2010-01-13  Girish Ramakrishnan  <girish@forwardbias.in>
+
+        Reviewed by Simon Hausmann.
+
+        [Qt/Win] Flash in QGraphicsWebView does not process hover correctly.
+
+        https://bugs.webkit.org/show_bug.cgi?id=33591
+
+        Mouse hover does not work as expected with the flash in some sites.
+        - http://www.bbc.co.uk/ Hover over the map
+        - http://www.barbie.com/ Hover over the menu items (Games, Videos)
+        The problem appears to be that Flash queries NPNVnetscapeWindow on every
+        mouse hover. I do not how flash uses this value but returning 0 when flash
+        is in windowless mode solves the problem (When using QGraphicsWebView we
+        inject wmode opaque, thereby putting the plugin in windowless mode).
+
+        * plugins/win/PluginViewWin.cpp:
+        (windowHandleForPageClient):
+
 2010-01-15  Zoltan Horvath  <zoltan@webkit.org>
 
         Reviewed by Darin Adler.

WebCore/plugins/win/PluginViewWin.cpp

@@ -98,7 +98,9 @@ static inline HWND windowHandleForPageClient(PlatformPageClient client)
 #if PLATFORM(QT)
     if (!client)
         return 0;
-    return client->ownerWidget()->winId();
+    if (QWidget* pluginParent = qobject_cast<QWidget*>(client->pluginParent()))
+        return pluginParent->winId();
+    return 0;
 #elif PLATFORM(WX)
     if (!client)
         return 0;