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"
16 // A layer that renders a surface referencing the output of another compositor
17 // instance or client.
18 class CC_EXPORT SurfaceLayer
: public Layer
{
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
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 LayerSettings
& settings
,
31 const SatisfyCallback
& satisfy_callback
,
32 const RequireCallback
& require_callback
);
34 void SetSurfaceId(SurfaceId surface_id
, float scale
, const gfx::Size
& size
);
37 scoped_ptr
<LayerImpl
> CreateLayerImpl(LayerTreeImpl
* tree_impl
) override
;
38 void SetLayerTreeHost(LayerTreeHost
* host
) override
;
39 void PushPropertiesTo(LayerImpl
* layer
) override
;
40 void CalculateContentsScale(float ideal_contents_scale
,
41 float* contents_scale_x
,
42 float* contents_scale_y
,
43 gfx::Size
* content_bounds
) override
;
46 SurfaceLayer(const LayerSettings
& settings
,
47 const SatisfyCallback
& satisfy_callback
,
48 const RequireCallback
& require_callback
);
49 bool HasDrawableContent() const override
;
52 ~SurfaceLayer() override
;
53 void CreateNewDestroySequence();
54 void SatisfyDestroySequence();
56 SurfaceId surface_id_
;
57 gfx::Size surface_size_
;
59 SurfaceSequence destroy_sequence_
;
60 SatisfyCallback satisfy_callback_
;
61 RequireCallback require_callback_
;
63 DISALLOW_COPY_AND_ASSIGN(SurfaceLayer
);
68 #endif // CC_LAYERS_SURFACE_LAYER_H_