Improve switch between gestures and touch mode when kEnableTouchEvents

content/browser/renderer_host/render_widget_host_view_win.h

 // Copyright (c) 2012 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 CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_WIN_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_WIN_H_
 #pragma once
 
 #include <atlbase.h>
 #include <atlapp.h>
@@ skipping 179 matching lines @@
       const gfx::Rect& scroll_rect, int scroll_dx, int scroll_dy,
       const std::vector<gfx::Rect>& copy_rects) OVERRIDE;
   virtual void RenderViewGone(base::TerminationStatus status,
                               int error_code) OVERRIDE;
   // called by TabContents before DestroyWindow
   virtual void WillWmDestroy() OVERRIDE;
   virtual void Destroy() OVERRIDE;
   virtual void SetTooltipText(const string16& tooltip_text) OVERRIDE;
   virtual BackingStore* AllocBackingStore(const gfx::Size& size) OVERRIDE;
   virtual void OnAcceleratedCompositingStateChange() OVERRIDE;
-  virtual void ProcessTouchAck(bool processed) OVERRIDE;
+  virtual void ProcessTouchAck(WebKit::WebInputEvent::Type type,
+                               bool processed) OVERRIDE;
   virtual void SetHasHorizontalScrollbar(
       bool has_horizontal_scrollbar) OVERRIDE;
   virtual void SetScrollOffsetPinning(
       bool is_pinned_to_left, bool is_pinned_to_right) OVERRIDE;
   virtual gfx::GLSurfaceHandle GetCompositingSurface() OVERRIDE;
   virtual void AcceleratedSurfaceBuffersSwapped(
       const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params,
       int gpu_host_id) OVERRIDE;
   virtual void AcceleratedSurfacePostSubBuffer(
       const GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params& params,
@@ skipping 150 matching lines @@
   LRESULT OnDocumentFeed(RECONVERTSTRING* reconv);
   LRESULT OnReconvertString(RECONVERTSTRING* reconv);
 
   // Displays the on screen keyboard for editable fields.
   void DisplayOnScreenKeyboardIfNeeded();
 
   // Invoked in a delayed task to reset the fact that we are in the context of
   // a WM_POINTERDOWN message.
   void ResetPointerDownContext();
 
+  // Switches between raw-touches mode and gesture mode. Currently touch mode
+  // will only take effect when kEnableTouchEvents is in effect.
+  void UpdateDesiredTouchMode(bool touch);
+
+  // Set window to receive gestures.
+  void SetToGestureMode();
+
+  // Set window to raw touch events. Returns whether registering was successful.
+  bool SetToTouchMode();
+
   // The associated Model.  While |this| is being Destroyed,
   // |render_widget_host_| is NULL and the Windows message loop is run one last
   // time. Message handlers must check for a NULL |render_widget_host_|.
   RenderWidgetHostImpl* render_widget_host_;
 
   // When we are doing accelerated compositing
   HWND compositor_host_window_;
 
   // Presents a texture received from another process to the compositing
   // window.
@@ skipping 158 matching lines @@
 
   // Set to true if the focus is currently on an editable field on the page.
   bool focus_on_editable_field_;
 
   // Set to true if we received a focus change after a WM_POINTERDOWN message.
   bool received_focus_change_after_pointer_down_;
 
   // Region in which the view will be transparent to clicks.
   gfx::ScopedSkRegion transparent_region_;
 
+  // Are touch events currently enabled?
+  bool touch_events_enabled_;
+
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewWin);
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_WIN_H_