components/mus/display_manager.h

   1 // Copyright 2014 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 COMPONENTS_MUS_DISPLAY_MANAGER_H_
   6 #define COMPONENTS_MUS_DISPLAY_MANAGER_H_
   7
   8 #include <map>
   9
  10 #include "base/basictypes.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/memory/weak_ptr.h"
  13 #include "base/timer/timer.h"
  14 #include "components/mus/display_manager_delegate.h"
  15 #include "components/mus/public/interfaces/view_tree.mojom.h"
  16 #include "components/mus/surfaces/top_level_display_client.h"
  17 #include "third_party/mojo/src/mojo/public/cpp/bindings/callback.h"
  18 #include "ui/gfx/geometry/rect.h"
  19 #include "ui/platform_window/platform_window_delegate.h"
  20
  21 namespace cc {
  22 class SurfaceIdAllocator;
  23 class SurfaceManager;
  24 }  // namespace cc
  25
  26 namespace gles2 {
  27 class GpuState;
  28 }  // namespace gles2
  29
  30 namespace mojo {
  31 class ApplicationImpl;
  32 }  // namespace mojo
  33
  34 namespace ui {
  35 class PlatformWindow;
  36 struct TextInputState;
  37 }  // namespace ui
  38
  39 namespace mus {
  40
  41 class DisplayManagerFactory;
  42 class EventDispatcher;
  43 class ServerView;
  44 class SurfacesScheduler;
  45 class SurfacesState;
  46
  47 // DisplayManager is used to connect the root ServerView to a display.
  48 class DisplayManager {
  49  public:
  50   virtual ~DisplayManager() {}
  51
  52   static DisplayManager* Create(
  53       bool is_headless,
  54       mojo::ApplicationImpl* app_impl,
  55       const scoped_refptr<GpuState>& gpu_state,
  56       const scoped_refptr<SurfacesState>& surfaces_state);
  57
  58   virtual void Init(DisplayManagerDelegate* delegate) = 0;
  59
  60   // Schedules a paint for the specified region in the coordinates of |view|.
  61   virtual void SchedulePaint(const ServerView* view,
  62                              const gfx::Rect& bounds) = 0;
  63
  64   virtual void SetViewportSize(const gfx::Size& size) = 0;
  65
  66   virtual void SetTitle(const base::string16& title) = 0;
  67
  68   virtual const mojo::ViewportMetrics& GetViewportMetrics() = 0;
  69
  70   virtual void UpdateTextInputState(const ui::TextInputState& state) = 0;
  71   virtual void SetImeVisibility(bool visible) = 0;
  72
  73   // Overrides factory for testing. Default (NULL) value indicates regular
  74   // (non-test) environment.
  75   static void set_factory_for_testing(DisplayManagerFactory* factory) {
  76     DisplayManager::factory_ = factory;
  77   }
  78
  79  private:
  80   // Static factory instance (always NULL for non-test).
  81   static DisplayManagerFactory* factory_;
  82 };
  83
  84 // DisplayManager implementation that connects to the services necessary to
  85 // actually display.
  86 class DefaultDisplayManager : public DisplayManager,
  87                               public ui::PlatformWindowDelegate {
  88  public:
  89   DefaultDisplayManager(bool is_headless,
  90                         mojo::ApplicationImpl* app_impl,
  91                         const scoped_refptr<GpuState>& gpu_state,
  92                         const scoped_refptr<SurfacesState>& surfaces_state);
  93   ~DefaultDisplayManager() override;
  94
  95   // DisplayManager:
  96   void Init(DisplayManagerDelegate* delegate) override;
  97   void SchedulePaint(const ServerView* view, const gfx::Rect& bounds) override;
  98   void SetViewportSize(const gfx::Size& size) override;
  99   void SetTitle(const base::string16& title) override;
 100   const mojo::ViewportMetrics& GetViewportMetrics() override;
 101   void UpdateTextInputState(const ui::TextInputState& state) override;
 102   void SetImeVisibility(bool visible) override;
 103
 104  private:
 105   void WantToDraw();
 106
 107   // This method initiates a top level redraw of the display.
 108   // TODO(fsamuel): This should use vblank as a signal rather than a timer
 109   // http://crbug.com/533042
 110   void Draw();
 111
 112   // This is called after cc::Display has completed generating a new frame
 113   // for the display. TODO(fsamuel): Idle time processing should happen here
 114   // if there is budget for it.
 115   void DidDraw();
 116   void UpdateMetrics(const gfx::Size& size, float device_pixel_ratio);
 117   scoped_ptr<cc::CompositorFrame> GenerateCompositorFrame();
 118   const cc::CompositorFrame* GetLastCompositorFrame() const;
 119
 120   // ui::PlatformWindowDelegate:
 121   void OnBoundsChanged(const gfx::Rect& new_bounds) override;
 122   void OnDamageRect(const gfx::Rect& damaged_region) override;
 123   void DispatchEvent(ui::Event* event) override;
 124   void OnCloseRequest() override;
 125   void OnClosed() override;
 126   void OnWindowStateChanged(ui::PlatformWindowState new_state) override;
 127   void OnLostCapture() override;
 128   void OnAcceleratedWidgetAvailable(gfx::AcceleratedWidget widget,
 129                                     float device_pixel_ratio) override;
 130   void OnActivationChanged(bool active) override;
 131
 132   bool is_headless_;
 133   mojo::ApplicationImpl* app_impl_;
 134   scoped_refptr<GpuState> gpu_state_;
 135   scoped_refptr<SurfacesState> surfaces_state_;
 136   DisplayManagerDelegate* delegate_;
 137
 138   mojo::ViewportMetrics metrics_;
 139   gfx::Rect dirty_rect_;
 140   base::Timer draw_timer_;
 141   bool frame_pending_;
 142
 143   scoped_ptr<TopLevelDisplayClient> top_level_display_client_;
 144   scoped_ptr<ui::PlatformWindow> platform_window_;
 145
 146   base::WeakPtrFactory<DefaultDisplayManager> weak_factory_;
 147
 148   DISALLOW_COPY_AND_ASSIGN(DefaultDisplayManager);
 149 };
 150
 151 }  // namespace mus
 152
 153 #endif  // COMPONENTS_MUS_DISPLAY_MANAGER_H_