Home | History | Annotate | Download | only in compositor 
      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_
     68