ash/display/mirror_window_controller.h

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef ASH_DISPLAY_MIRROR_WINDOW_CONTROLLER_H_
   6 #define ASH_DISPLAY_MIRROR_WINDOW_CONTROLLER_H_
   7
   8 #include "ash/ash_export.h"
   9 #include "base/compiler_specific.h"
  10 #include "base/memory/ref_counted.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "ui/aura/window_tree_host_observer.h"
  13 #include "ui/gfx/geometry/size.h"
  14 #include "ui/gfx/native_widget_types.h"
  15
  16 namespace aura {
  17 class Window;
  18 }
  19
  20 namespace ui {
  21 class Reflector;
  22 }
  23
  24 namespace ash {
  25 class AshWindowTreeHost;
  26 class DisplayInfo;
  27 class RootWindowTransformer;
  28
  29 namespace test{
  30 class MirrorWindowTestApi;
  31 }
  32
  33 // An object that copies the content of the primary root window to a
  34 // mirror window. This also draws a mouse cursor as the mouse cursor
  35 // is typically drawn by the window system.
  36 class ASH_EXPORT MirrorWindowController : public aura::WindowTreeHostObserver {
  37  public:
  38   MirrorWindowController();
  39   ~MirrorWindowController() override;
  40
  41   // Updates the root window's bounds using |display_info|.
  42   // Creates the new root window if one doesn't exist.
  43   void UpdateWindow(const DisplayInfo& display_info);
  44
  45   // Same as above, but using existing display info
  46   // for the mirrored display.
  47   void UpdateWindow();
  48
  49   // Close the mirror window.
  50   void Close();
  51
  52   // aura::WindowTreeHostObserver overrides:
  53   void OnHostResized(const aura::WindowTreeHost* host) override;
  54
  55   // Return the root window used to mirror the content. NULL if the
  56   // display is not mirrored by the compositor path.
  57   aura::Window* GetWindow();
  58
  59  private:
  60   friend class test::MirrorWindowTestApi;
  61
  62   // Creates a RootWindowTransformer for current display
  63   // configuration.
  64   scoped_ptr<RootWindowTransformer> CreateRootWindowTransformer() const;
  65
  66   scoped_ptr<AshWindowTreeHost> ash_host_;
  67   gfx::Size mirror_window_host_size_;
  68   scoped_refptr<ui::Reflector> reflector_;
  69
  70   DISALLOW_COPY_AND_ASSIGN(MirrorWindowController);
  71 };
  72
  73 }  // namespace ash
  74
  75 #endif  // ASH_DISPLAY_MIRROR_WINDOW_CONTROLLER_H_