Index: components/mus/surfaces/display_compositor.h |
diff --git a/components/mus/surfaces/display_compositor.h b/components/mus/surfaces/display_compositor.h |
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+// Copyright 2016 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef COMPONENTS_MUS_SURFACES_DISPLAY_COMPOSITOR_H_ |
+#define COMPONENTS_MUS_SURFACES_DISPLAY_COMPOSITOR_H_ |
+ |
+#include "cc/surfaces/surface.h" |
+#include "cc/surfaces/surface_factory.h" |
+#include "cc/surfaces/surface_factory_client.h" |
+#include "cc/surfaces/surface_id_allocator.h" |
+#include "components/mus/gles2/gpu_state.h" |
+#include "components/mus/surfaces/surfaces_state.h" |
+#include "ui/gfx/native_widget_types.h" |
+ |
+namespace mus { |
+ |
+class TopLevelDisplayClient; |
+ |
+// TODO(fsamuel): This should become a mojo interface for the mus-gpu split. |
+// TODO(fsamuel): This should not be a SurfaceFactoryClient. |
+// The DisplayCompositor receives CompositorFrames from all sources, |
+// creates a top-level CompositorFrame once per tick, and generates graphical |
+// output. |
+class DisplayCompositor : public cc::SurfaceFactoryClient { |
+ public: |
+ DisplayCompositor(scoped_refptr<base::SingleThreadTaskRunner> task_runner, |
+ gfx::AcceleratedWidget widget, |
+ const scoped_refptr<GpuState>& gpu_state, |
+ const scoped_refptr<SurfacesState>& surfaces_state); |
+ ~DisplayCompositor() override; |
+ |
+ // DisplayCompositor embedders submit a CompositorFrame when content on the |
+ // display should be changed. A well-behaving embedder should only submit |
+ // a CompositorFrame once per BeginFrame tick. The callback is called the |
+ // first time this frame is used to draw, or if the frame is discarded. |
+ void SubmitCompositorFrame( |
+ std::unique_ptr<cc::CompositorFrame> frame, |
+ const base::Callback<void(cc::SurfaceDrawStatus)>& callback); |
+ |
+ // TODO(fsamuel): This is used for surface hittesting and should not be |
+ // exposed outside of DisplayCompositor. |
+ const cc::SurfaceId& surface_id() const { return surface_id_; } |
+ |
+ // This requests the display CompositorFrame be rendered and given to the |
+ // callback within CopyOutputRequest. |
+ void RequestCopyOfOutput( |
+ std::unique_ptr<cc::CopyOutputRequest> output_request); |
+ |
+ // TODO(fsamuel): Invent an async way to create a SurfaceNamespace |
+ // A SurfaceNamespace can create CompositorFrameSinks where the client can |
+ // make up the ID. |
+ |
+ private: |
+ // SurfaceFactoryClient implementation. |
+ void ReturnResources(const cc::ReturnedResourceArray& resources) override; |
+ void SetBeginFrameSource(cc::BeginFrameSource* begin_frame_source) override; |
+ |
+ scoped_refptr<base::SingleThreadTaskRunner> task_runner_; |
+ scoped_refptr<SurfacesState> surfaces_state_; |
+ cc::SurfaceFactory factory_; |
+ cc::SurfaceIdAllocator allocator_; |
+ cc::SurfaceId surface_id_; |
+ |
+ gfx::Size display_size_; |
+ std::unique_ptr<TopLevelDisplayClient> display_client_; |
+ DISALLOW_COPY_AND_ASSIGN(DisplayCompositor); |
+}; |
+ |
+} // namespace mus |
+ |
+#endif // COMPONENTS_MUS_SURFACES_DISPLAY_COMPOSITOR_H_ |