components/mus/surfaces/surfaces_state.h

   1 // Copyright 2015 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_SURFACES_SURFACES_STATE_H_
   6 #define COMPONENTS_MUS_SURFACES_SURFACES_STATE_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "cc/surfaces/surface_hittest.h"
  11 #include "cc/surfaces/surface_manager.h"
  12 #include "components/mus/surfaces/surfaces_scheduler.h"
  13
  14 namespace cc {
  15 class SurfaceHittest;
  16 class SurfaceManager;
  17 }  // namespace cc
  18
  19 namespace mus {
  20
  21 // The SurfacesState object is an object global to the View Manager app that
  22 // holds the SurfaceManager, SurfacesScheduler and allocates new Surfaces
  23 // namespaces. This object lives on the main thread of the View Manager.
  24 // TODO(rjkroege, fsamuel): This object will need to change to support multiple
  25 // displays.
  26 class SurfacesState : public base::RefCounted<SurfacesState> {
  27  public:
  28   SurfacesState();
  29
  30   uint32_t next_id_namespace() { return next_id_namespace_++; }
  31
  32   cc::SurfaceManager* manager() { return &manager_; }
  33
  34   cc::SurfaceHittest* hit_tester() { return &hit_tester_; }
  35
  36   SurfacesScheduler* scheduler() { return &scheduler_; }
  37
  38  private:
  39   friend class base::RefCounted<SurfacesState>;
  40   ~SurfacesState();
  41
  42   // A Surface ID is an unsigned 64-bit int where the high 32-bits are generated
  43   // by the Surfaces service, and the low 32-bits are generated by the process
  44   // that requested the Surface.
  45   uint32_t next_id_namespace_;
  46   cc::SurfaceManager manager_;
  47   cc::SurfaceHittest hit_tester_;
  48   SurfacesScheduler scheduler_;
  49
  50   DISALLOW_COPY_AND_ASSIGN(SurfacesState);
  51 };
  52
  53 }  // namespace mus
  54
  55 #endif  //  COMPONENTS_MUS_SURFACES_SURFACES_STATE_H_