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// Copyright 2014 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_HTML_VIEWER_WEB_LAYER_TREE_VIEW_IMPL_H_
#define COMPONENTS_HTML_VIEWER_WEB_LAYER_TREE_VIEW_IMPL_H_
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/single_thread_task_runner.h"
#include "cc/trees/layer_tree_host_client.h"
#include "components/gpu/public/interfaces/gpu.mojom.h"
#include "components/surfaces/public/interfaces/surfaces.mojom.h"
#include "mojo/cc/output_surface_mojo.h"
#include "third_party/WebKit/public/platform/WebLayerTreeView.h"
namespace base {
class MessageLoopProxy;
}
namespace blink {
class WebWidget;
}
namespace cc {
class LayerTreeHost;
}
namespace mojo {
class View;
}
namespace html_viewer {
class WebLayerTreeViewImpl : public blink::WebLayerTreeView,
public cc::LayerTreeHostClient,
public mojo::OutputSurfaceMojoClient {
public:
WebLayerTreeViewImpl(
scoped_refptr<base::MessageLoopProxy> compositor_message_loop_proxy,
mojo::SurfacePtr surface,
mojo::GpuPtr gpu_service);
~WebLayerTreeViewImpl() override;
void set_widget(blink::WebWidget* widget) { widget_ = widget; }
void set_view(mojo::View* view) { view_ = view; }
// cc::LayerTreeHostClient implementation.
void WillBeginMainFrame() override;
void DidBeginMainFrame() override;
void BeginMainFrame(const cc::BeginFrameArgs& args) override;
void BeginMainFrameNotExpectedSoon() override;
void Layout() override;
void ApplyViewportDeltas(const gfx::Vector2dF& inner_delta,
const gfx::Vector2dF& outer_delta,
const gfx::Vector2dF& elastic_overscroll_delta,
float page_scale,
float top_controls_delta) override;
void ApplyViewportDeltas(const gfx::Vector2d& scroll_delta,
float page_scale,
float top_controls_delta) override;
void RequestNewOutputSurface() override;
void DidFailToInitializeOutputSurface() override;
void DidInitializeOutputSurface() override;
void WillCommit() override;
void DidCommit() override;
void DidCommitAndDrawFrame() override;
void DidCompleteSwapBuffers() override;
void DidCompletePageScaleAnimation() override {}
void RateLimitSharedMainThreadContext() override {}
// blink::WebLayerTreeView implementation.
virtual void setRootLayer(const blink::WebLayer& layer);
virtual void clearRootLayer();
virtual void setViewportSize(const blink::WebSize& device_viewport_size);
virtual blink::WebSize deviceViewportSize() const;
virtual void setDeviceScaleFactor(float);
virtual float deviceScaleFactor() const;
virtual void setBackgroundColor(blink::WebColor color);
virtual void setHasTransparentBackground(bool has_transparent_background);
virtual void setVisible(bool visible);
virtual void setPageScaleFactorAndLimits(float page_scale_factor,
float minimum,
float maximum);
virtual void startPageScaleAnimation(const blink::WebPoint& destination,
bool use_anchor,
float new_page_scale,
double duration_sec);
virtual void heuristicsForGpuRasterizationUpdated(bool matches_heuristic) {}
virtual void setNeedsAnimate();
virtual bool commitRequested() const;
virtual void didStopFlinging() {}
virtual void compositeAndReadbackAsync(
blink::WebCompositeAndReadbackAsyncCallback* callback) {}
virtual void finishAllRendering();
virtual void setDeferCommits(bool defer_commits) {}
virtual void registerForAnimations(blink::WebLayer* layer);
virtual void registerViewportLayers(
const blink::WebLayer* overscrollElasticityLayer,
const blink::WebLayer* pageScaleLayerLayer,
const blink::WebLayer* innerViewportScrollLayer,
const blink::WebLayer* outerViewportScrollLayer);
virtual void clearViewportLayers();
virtual void registerSelection(const blink::WebSelection& selection) {}
virtual void clearSelection() {}
virtual void setShowFPSCounter(bool) {}
virtual void setShowPaintRects(bool) {}
virtual void setShowDebugBorders(bool) {}
virtual void setContinuousPaintingEnabled(bool) {}
virtual void setShowScrollBottleneckRects(bool) {}
// OutputSurfaceMojoClient implementation.
void DidCreateSurface(cc::SurfaceId id) override;
private:
void DidCreateSurfaceOnMainThread(cc::SurfaceId id);
// widget_ and view_ will outlive us.
blink::WebWidget* widget_;
mojo::View* view_;
scoped_ptr<cc::LayerTreeHost> layer_tree_host_;
scoped_ptr<cc::OutputSurface> output_surface_;
scoped_refptr<base::SingleThreadTaskRunner>
main_thread_compositor_task_runner_;
base::WeakPtr<WebLayerTreeViewImpl> main_thread_bound_weak_ptr_;
base::WeakPtrFactory<WebLayerTreeViewImpl> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(WebLayerTreeViewImpl);
};
} // namespace html_viewer
#endif // COMPONENTS_HTML_VIEWER_WEB_LAYER_TREE_VIEW_IMPL_H_
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