Initial views touchui GestureRecognizer support

views/widget/root_view.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_ROOT_VIEW_H_
 #define VIEWS_WIDGET_ROOT_VIEW_H_
 #pragma once
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "views/focus/focus_manager.h"
 #include "views/focus/focus_search.h"
+#include "views/touchui/gesture_recognizer.h"
 #include "views/view.h"
 
 namespace ui {
 enum TouchStatus;
 }
 
 namespace views {
 
 class Widget;
 class GestureManager;
@@ skipping 82 matching lines @@
   virtual bool OnMouseDragged(const MouseEvent& event) OVERRIDE;
   virtual void OnMouseReleased(const MouseEvent& event) OVERRIDE;
   virtual void OnMouseCaptureLost() OVERRIDE;
   virtual void OnMouseMoved(const MouseEvent& event) OVERRIDE;
   virtual void OnMouseExited(const MouseEvent& event) OVERRIDE;
   virtual bool OnMouseWheel(const MouseWheelEvent& event) OVERRIDE;
   virtual ui::TouchStatus OnTouchEvent(const TouchEvent& event) OVERRIDE;
   virtual void SetMouseHandler(View* new_mouse_handler) OVERRIDE;
   virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE;
 
+  // GestureManager invokes for recognized GestureEvents.
+  // Identify gesture handler view and passes the gesture events, returns true
+  // if gesture handler consumes else false.
+  bool ForwardGestureEvents(GestureRecognizer::Gestures* gestures);
+
  protected:
   // Overridden from View:
   virtual void ViewHierarchyChanged(bool is_add, View* parent,
                                     View* child) OVERRIDE;
   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
   virtual void CalculateOffsetToAncestorWithLayer(
       gfx::Point* offset,
       ui::Layer** layer_parent) OVERRIDE;
 
  private:
@@ skipping 45 matching lines @@
   int last_mouse_event_flags_;
   int last_mouse_event_x_;
   int last_mouse_event_y_;
 
   // The gesture_manager_ for this.
   GestureManager* gesture_manager_;
 
   // The view currently handling touch events.
   View* touch_pressed_handler_;
 
+  // The view currently handling gesture events.
+  View* gesture_handler_;

[rjkroege, 2011/11/01 18:42:22]

I'd call this "gesture_handling_view_" to align the name with the comment. Or
adjust the comment.

[Gajen, 2011/11/02 12:59:35]

Agreed, will incorporate in.

[Gajen, 2011/11/08 08:11:44]

Done.

+
   // Focus ---------------------------------------------------------------------
 
   // The focus search algorithm.
   FocusSearch focus_search_;
 
   // Whether this root view belongs to the current active window.
   // bool activated_;
 
   // The parent FocusTraversable, used for focus traversal.
   FocusTraversable* focus_traversable_parent_;
 
   // The View that contains this RootView. This is used when we have RootView
   // wrapped inside native components, and is used for the focus traversal.
   View* focus_traversable_parent_view_;
 
   // Drag and drop -------------------------------------------------------------
 
   // Tracks drag state for a view.
   View::DragInfo drag_info;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(RootView);
 };
 
 }  // namespace internal
 }  // namespace views
 
 #endif  // VIEWS_WIDGET_ROOT_VIEW_H_