Added projection mode to touch HUD

ash/touch/touch_observer_hud.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 ASH_TOUCH_TOUCH_OBSERVER_HUD_H_
 #define ASH_TOUCH_TOUCH_OBSERVER_HUD_H_
 
 #include "ash/ash_export.h"
 #include "ash/display/display_controller.h"
 #include "ash/shell.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 #include "ui/base/events/event_handler.h"
 #include "ui/gfx/display_observer.h"
 #include "ui/gfx/point.h"
 #include "ui/views/widget/widget_observer.h"
 
 #if defined(OS_CHROMEOS)
 #include "chromeos/display/output_configurator.h"
 #endif  // defined(OS_CHROMEOS)
 
 namespace aura {
 class Window;
 }
 
 namespace gfx {
 class Display;
 }
 
 namespace views {
 class Label;
 class View;
 class Widget;
 }
 
 namespace ash {
 namespace internal {
 
 class TouchHudCanvas;
+class TouchLog;
 
 // An event filter which handles system level gesture events. Objects of this
 // class manage their own lifetime.
 class ASH_EXPORT TouchObserverHUD
     : public ui::EventHandler,
       public views::WidgetObserver,
       public gfx::DisplayObserver,
 #if defined(OS_CHROMEOS)
       public chromeos::OutputConfigurator::Observer,
 #endif  // defined(OS_CHROMEOS)
       public DisplayController::Observer {
  public:
+  enum Mode {
+    FULLSCREEN,
+    REDUCED_SCALE,
+    PROJECTION,
+    INVISIBLE,
+  };
+
   explicit TouchObserverHUD(aura::RootWindow* initial_root);
 
   // Returns the log of touch events as a dictionary mapping id of each display
   // to its touch log.
   static scoped_ptr<DictionaryValue> GetAllAsDictionary();
 
   // Changes the display mode (e.g. scale, visibility). Calling this repeatedly
   // cycles between a fixed number of display modes.
   void ChangeToNextMode();
 
   // Removes all existing touch points from the screen (only if the HUD is
   // visible).
   void Clear();
 
   // Returns log of touch events as a list value. Each item in the list is a
   // trace of one touch point.
   scoped_ptr<ListValue> GetLogAsList() const;
 
+  Mode mode() const { return mode_; }
+
  private:
   friend class TouchHudTest;
 
   virtual ~TouchObserverHUD();
 
+  void SetMode(Mode mode);
+
   void UpdateTouchPointLabel(int index);
 
   // Overriden from ui::EventHandler:
   virtual void OnTouchEvent(ui::TouchEvent* event) OVERRIDE;
 
   // Overridden from views::WidgetObserver:
   virtual void OnWidgetDestroying(views::Widget* widget) OVERRIDE;
 
   // Overridden from gfx::DisplayObserver:
   virtual void OnDisplayBoundsChanged(const gfx::Display& display) OVERRIDE;
   virtual void OnDisplayAdded(const gfx::Display& new_display) OVERRIDE;
   virtual void OnDisplayRemoved(const gfx::Display& old_display) OVERRIDE;
 
 #if defined(OS_CHROMEOS)
   // Overriden from chromeos::OutputConfigurator::Observer:
   virtual void OnDisplayModeChanged() OVERRIDE;
 #endif  // defined(OS_CHROMEOS)
 
   // Overriden form DisplayController::Observer:
   virtual void OnDisplayConfigurationChanging() OVERRIDE;
   virtual void OnDisplayConfigurationChanged() OVERRIDE;
 
   static const int kMaxTouchPoints = 32;
 
   const int64 display_id_;
   aura::RootWindow* root_window_;
 
+  Mode mode_;
+
+  scoped_ptr<TouchLog> touch_log_;
+
   views::Widget* widget_;
   TouchHudCanvas* canvas_;
   views::View* label_container_;
   views::Label* touch_labels_[kMaxTouchPoints];
-  gfx::Point touch_positions_[kMaxTouchPoints];
-  float touch_radius_[kMaxTouchPoints];
-  ui::EventType touch_status_[kMaxTouchPoints];
 
   DISALLOW_COPY_AND_ASSIGN(TouchObserverHUD);
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_TOUCH_TOUCH_OBSERVER_HUD_H_