components/view_manager/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_VIEW_MANAGER_DISPLAY_MANAGER_H_
   6 #define COMPONENTS_VIEW_MANAGER_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/view_manager/public/interfaces/display.mojom.h"
  15 #include "components/view_manager/public/interfaces/native_viewport.mojom.h"
  16 #include "components/view_manager/public/interfaces/view_manager.mojom.h"
  17 #include "third_party/mojo/src/mojo/public/cpp/bindings/callback.h"
  18 #include "ui/gfx/geometry/rect.h"
  19
  20 namespace cc {
  21 class SurfaceIdAllocator;
  22 }
  23
  24 namespace mojo {
  25 class ApplicationImpl;
  26 }
  27
  28 namespace view_manager {
  29
  30 class ConnectionManager;
  31 class ServerView;
  32
  33 // DisplayManager is used to connect the root ServerView to a display.
  34 class DisplayManager {
  35  public:
  36   virtual ~DisplayManager() {}
  37
  38   virtual void Init(
  39       ConnectionManager* connection_manager,
  40       mojo::NativeViewportEventDispatcherPtr event_dispatcher) = 0;
  41
  42   // Schedules a paint for the specified region in the coordinates of |view|.
  43   virtual void SchedulePaint(const ServerView* view,
  44                              const gfx::Rect& bounds) = 0;
  45
  46   virtual void SetViewportSize(const gfx::Size& size) = 0;
  47
  48   virtual const mojo::ViewportMetrics& GetViewportMetrics() = 0;
  49 };
  50
  51 // DisplayManager implementation that connects to the services necessary to
  52 // actually display.
  53 class DefaultDisplayManager : public DisplayManager,
  54                               public mojo::ErrorHandler {
  55  public:
  56   DefaultDisplayManager(
  57       mojo::ApplicationImpl* app_impl,
  58       const mojo::Callback<void()>& native_viewport_closed_callback);
  59   ~DefaultDisplayManager() override;
  60
  61   // DisplayManager:
  62   void Init(ConnectionManager* connection_manager,
  63             mojo::NativeViewportEventDispatcherPtr event_dispatcher) override;
  64   void SchedulePaint(const ServerView* view, const gfx::Rect& bounds) override;
  65   void SetViewportSize(const gfx::Size& size) override;
  66   const mojo::ViewportMetrics& GetViewportMetrics() override;
  67
  68  private:
  69   void WantToDraw();
  70   void Draw();
  71   void DidDraw();
  72
  73   void OnMetricsChanged(mojo::ViewportMetricsPtr metrics);
  74
  75   // ErrorHandler:
  76   void OnConnectionError() override;
  77
  78   mojo::ApplicationImpl* app_impl_;
  79   ConnectionManager* connection_manager_;
  80
  81   mojo::ViewportMetrics metrics_;
  82   gfx::Rect dirty_rect_;
  83   base::Timer draw_timer_;
  84   bool frame_pending_;
  85
  86   mojo::DisplayPtr display_;
  87   mojo::NativeViewportPtr native_viewport_;
  88   mojo::Callback<void()> native_viewport_closed_callback_;
  89   base::WeakPtrFactory<DefaultDisplayManager> weak_factory_;
  90
  91   DISALLOW_COPY_AND_ASSIGN(DefaultDisplayManager);
  92 };
  93
  94 }  // namespace view_manager
  95
  96 #endif  // COMPONENTS_VIEW_MANAGER_DISPLAY_MANAGER_H_