1 files changed, 21 insertions, 5 deletions
diff --git a/src/3rdparty/webkit/WebCore/platform/Widget.h b/src/3rdparty/webkit/WebCore/platform/Widget.h
index b6c0054144..5fd18faf13 100644
--- a/src/3rdparty/webkit/WebCore/platform/Widget.h
+++ b/src/3rdparty/webkit/WebCore/platform/Widget.h
@@ -73,6 +73,8 @@ typedef wxWindow* PlatformWidget;
 #include "IntRect.h"
 #include "IntSize.h"
 
+#include <wtf/RefCounted.h>
+
 namespace WebCore {
 
 class Cursor;
@@ -81,7 +83,6 @@ class Font;
 class GraphicsContext;
 class PlatformMouseEvent;
 class ScrollView;
-class WidgetClient;
 class WidgetPrivate;
 
 // The Widget class serves as a base class for three kinds of objects:
@@ -99,11 +100,11 @@ class WidgetPrivate;
 // Scrollbar - Mac, Gtk
 // Plugin - Mac, Windows (windowed only), Qt (windowed only, widget is an HWND on windows), Gtk (windowed only)
 //
-class Widget {
+class Widget : public RefCounted<Widget> {
 public:
     Widget(PlatformWidget = 0);
     virtual ~Widget();
-    
+
     PlatformWidget platformWidget() const { return m_widget; }
     void setPlatformWidget(PlatformWidget widget)
     { 
@@ -164,9 +165,10 @@ public:
     // up with an inaccurate rect.  Always make sure to use the rect-based convertFromContainingWindow method
     // when converting window rects.
     IntRect convertToContainingWindow(const IntRect&) const;
-    IntPoint convertToContainingWindow(const IntPoint&) const;
-    IntPoint convertFromContainingWindow(const IntPoint&) const; // See comment above about when not to use this method.
     IntRect convertFromContainingWindow(const IntRect&) const;
+    
+    IntPoint convertToContainingWindow(const IntPoint&) const;
+    IntPoint convertFromContainingWindow(const IntPoint&) const;
 
     virtual void frameRectsChanged() {}
 
@@ -179,12 +181,26 @@ public:
     void removeFromSuperview();
 #endif
 
+    // Virtual methods to convert points to/from the containing ScrollView
+    virtual IntRect convertToContainingView(const IntRect&) const;
+    virtual IntRect convertFromContainingView(const IntRect&) const;
+    virtual IntPoint convertToContainingView(const IntPoint&) const;
+    virtual IntPoint convertFromContainingView(const IntPoint&) const;
+
 private:
     void init(PlatformWidget); // Must be called by all Widget constructors to initialize cross-platform data.
 
     void releasePlatformWidget();
     void retainPlatformWidget();
     
+    // These methods are used to convert from the root widget to the containing window,
+    // which has behavior that may differ between platforms (e.g. Mac uses flipped window coordinates).
+    static IntRect convertFromRootToContainingWindow(const Widget* rootWidget, const IntRect&);
+    static IntRect convertFromContainingWindowToRoot(const Widget* rootWidget, const IntRect&);
+    
+    static IntPoint convertFromRootToContainingWindow(const Widget* rootWidget, const IntPoint&);
+    static IntPoint convertFromContainingWindowToRoot(const Widget* rootWidget, const IntPoint&);
+
 private:
     ScrollView* m_parent;
     PlatformWidget m_widget;