[Easy Unlock] Port the BluetoothThrottler class to native code.
[chromium-blink-merge.git] / cc / layers / surface_layer.h
blob381369f5c615457831b7ae8014352d68e916bd3a
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.
5 #ifndef CC_LAYERS_SURFACE_LAYER_H_
6 #define CC_LAYERS_SURFACE_LAYER_H_
8 #include "cc/base/cc_export.h"
9 #include "cc/layers/layer.h"
10 #include "cc/surfaces/surface_id.h"
11 #include "cc/surfaces/surface_sequence.h"
12 #include "ui/gfx/geometry/size.h"
14 namespace cc {
16 // A layer that renders a surface referencing the output of another compositor
17 // instance or client.
18 class CC_EXPORT SurfaceLayer : public Layer {
19 public:
20 // This callback is run when a SurfaceSequence needs to be satisfied, but
21 // the parent compositor is unable to. It can be called on either the main
22 // or impl threads.
23 using SatisfyCallback = base::Callback<void(SurfaceSequence)>;
25 // This callback is run to require that a specific SurfaceSequence is
26 // received before a SurfaceId is destroyed.
27 using RequireCallback = base::Callback<void(SurfaceId, SurfaceSequence)>;
29 static scoped_refptr<SurfaceLayer> Create(
30 const SatisfyCallback& satisfy_callback,
31 const RequireCallback& require_callback);
33 void SetSurfaceId(SurfaceId surface_id, float scale, const gfx::Size& size);
35 // Layer overrides.
36 scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
37 void SetLayerTreeHost(LayerTreeHost* host) override;
38 void PushPropertiesTo(LayerImpl* layer) override;
39 void CalculateContentsScale(float ideal_contents_scale,
40 float* contents_scale_x,
41 float* contents_scale_y,
42 gfx::Size* content_bounds) override;
44 protected:
45 SurfaceLayer(const SatisfyCallback& satisfy_callback,
46 const RequireCallback& require_callback);
47 bool HasDrawableContent() const override;
49 private:
50 ~SurfaceLayer() override;
51 void CreateNewDestroySequence();
52 void SatisfyDestroySequence();
54 SurfaceId surface_id_;
55 gfx::Size surface_size_;
56 float surface_scale_;
57 SurfaceSequence destroy_sequence_;
58 SatisfyCallback satisfy_callback_;
59 RequireCallback require_callback_;
61 DISALLOW_COPY_AND_ASSIGN(SurfaceLayer);
64 } // namespace cc
66 #endif // CC_LAYERS_SURFACE_LAYER_H_