src/content/browser/compositor/onscreen_display_client.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 CONTENT_BROWSER_COMPOSITOR_ONSCREEN_DISPLAY_CLIENT_H_
   6 #define CONTENT_BROWSER_COMPOSITOR_ONSCREEN_DISPLAY_CLIENT_H_
   7
   8 #include "cc/surfaces/display_client.h"
   9
  10 #include "base/memory/ref_counted.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/single_thread_task_runner.h"
  13 #include "cc/surfaces/display.h"
  14
  15 namespace cc {
  16 class ContextProvider;
  17 class SurfaceManager;
  18 }
  19
  20 namespace content {
  21 class SurfaceDisplayOutputSurface;
  22
  23 // This class provides a DisplayClient implementation for drawing directly to an
  24 // onscreen context.
  25 class OnscreenDisplayClient : cc::DisplayClient {
  26  public:
  27   OnscreenDisplayClient(
  28       scoped_ptr<cc::OutputSurface> output_surface,
  29       cc::SurfaceManager* manager,
  30       scoped_refptr<base::SingleThreadTaskRunner> task_runner);
  31   virtual ~OnscreenDisplayClient();
  32
  33   cc::Display* display() { return display_.get(); }
  34   void set_surface_output_surface(SurfaceDisplayOutputSurface* surface) {
  35     surface_display_output_surface_ = surface;
  36   }
  37
  38   // cc::DisplayClient implementation.
  39   virtual scoped_ptr<cc::OutputSurface> CreateOutputSurface() OVERRIDE;
  40   virtual void DisplayDamaged() OVERRIDE;
  41   virtual void DidSwapBuffers() OVERRIDE;
  42   virtual void DidSwapBuffersComplete() OVERRIDE;
  43   virtual void CommitVSyncParameters(base::TimeTicks timebase,
  44                                      base::TimeDelta interval) OVERRIDE;
  45
  46  private:
  47   void ScheduleDraw();
  48   void Draw();
  49
  50   scoped_ptr<cc::OutputSurface> output_surface_;
  51   scoped_ptr<cc::Display> display_;
  52   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
  53   SurfaceDisplayOutputSurface* surface_display_output_surface_;
  54   bool scheduled_draw_;
  55   // True if a draw should be scheduled, but it's hit the limit on max frames
  56   // pending.
  57   bool deferred_draw_;
  58   int pending_frames_;
  59
  60   base::WeakPtrFactory<OnscreenDisplayClient> weak_ptr_factory_;
  61
  62   DISALLOW_COPY_AND_ASSIGN(OnscreenDisplayClient);
  63 };
  64
  65 }  // namespace content
  66
  67 #endif  // CONTENT_BROWSER_COMPOSITOR_ONSCREEN_DISPLAY_CLIENT_H_