New InputMethod api for Views.

views/widget/widget.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef VIEWS_WIDGET_WIDGET_H_
 #define VIEWS_WIDGET_WIDGET_H_
 #pragma once
 
 #include <vector>
 
@@ skipping 73 matching lines @@
   Widget();
   virtual ~Widget();
 
   // Creates a Widget instance suitable for use as a transient popup.
   static Widget* CreatePopupWidget(const CreateParams& params);
 
   // Enumerates all windows pertaining to us and notifies their
   // view hierarchies that the locale has changed.
   static void NotifyLocaleChanged();
 
+  // Converts a rectangle from one Widget's coordinate system to another's.
+  // Returns false if the conversion couldn't be made, because either these two
+  // Widgets do not have a common ancestor or they are not on the screen yet.
+  // The value of |*rect| won't be changed when false is returned.
+  static bool ConvertRect(const Widget* source,
+                          const Widget* target,
+                          gfx::Rect* rect);
+
   // Unconverted methods -------------------------------------------------------
 
   // TODO(beng):
   // Widget subclasses are still implementing these methods by overriding from
   // here rather than by implementing NativeWidget.
 
   // Initialize the Widget with a parent and an initial desired size.
   // |contents_view| is the view that will be the single child of RootView
   // within this Widget. As contents_view is inserted into RootView's tree,
   // RootView assumes ownership of this view and cleaning it up. If you remove
@@ skipping 226 matching lines @@
 
   // The compositor for accelerated drawing.
   scoped_refptr<ui::Compositor> compositor_;
 
   DISALLOW_COPY_AND_ASSIGN(Widget);
 };
 
 }  // namespace views
 
 #endif // VIEWS_WIDGET_WIDGET_H_