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// Copyright 2020 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 THIRD_PARTY_BLINK_RENDERER_PLATFORM_WIDGET_WIDGET_BASE_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_WIDGET_WIDGET_BASE_H_
#include "base/time/time.h"
#include "cc/paint/element_id.h"
#include "mojo/public/cpp/bindings/associated_receiver.h"
#include "mojo/public/cpp/bindings/associated_remote.h"
#include "third_party/blink/public/common/metrics/document_update_reason.h"
#include "third_party/blink/public/mojom/page/widget.mojom-blink.h"
#include "third_party/blink/public/platform/cross_variant_mojo_util.h"
#include "third_party/blink/public/web/web_widget.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/platform/weborigin/kurl.h"
#include "third_party/blink/renderer/platform/widget/compositing/layer_tree_view_delegate.h"
namespace cc {
class AnimationHost;
class LayerTreeHost;
class LayerTreeSettings;
class TaskGraphRunner;
class UkmRecorderFactory;
} // namespace cc
namespace ui {
class Cursor;
}
namespace blink {
class LayerTreeView;
class WidgetBaseClient;
namespace scheduler {
class WebRenderWidgetSchedulingState;
}
// This class is the foundational class for all widgets that blink creates.
// (WebPagePopupImpl, WebFrameWidgetBase) will contain an instance of this
// class. For simplicity purposes this class will be a member of those classes.
// It will eventually host compositing, input and emulation. See design doc:
// https://docs.google.com/document/d/10uBnSWBaitGsaROOYO155Wb83rjOPtrgrGTrQ_pcssY/edit?ts=5e3b26f7
class PLATFORM_EXPORT WidgetBase : public mojom::blink::Widget,
public LayerTreeViewDelegate {
public:
WidgetBase(
WidgetBaseClient* client,
CrossVariantMojoAssociatedRemote<mojom::WidgetHostInterfaceBase>
widget_host,
CrossVariantMojoAssociatedReceiver<mojom::WidgetInterfaceBase> widget);
~WidgetBase() override;
// Initialize the compositor.
void InitializeCompositing(
cc::TaskGraphRunner* task_graph_runner,
const cc::LayerTreeSettings& settings,
std::unique_ptr<cc::UkmRecorderFactory> ukm_recorder_factory);
// Shutdown the compositor.
void Shutdown(scoped_refptr<base::SingleThreadTaskRunner> cleanup_runner,
base::OnceCallback<void()> cleanup_task);
// Set the compositor as visible. If |visible| is true, then the compositor
// will request a new layer frame sink, begin producing frames from the
// compositor scheduler, and in turn will update the document lifecycle.
void SetCompositorVisible(bool visible);
void AddPresentationCallback(
uint32_t frame_token,
base::OnceCallback<void(base::TimeTicks)> callback);
// LayerTreeDelegate overrides:
// Applies viewport related properties during a commit from the compositor
// thread.
void ApplyViewportChanges(const cc::ApplyViewportChangesArgs& args) override;
void RecordManipulationTypeCounts(cc::ManipulationInfo info) override;
void SendOverscrollEventFromImplSide(
const gfx::Vector2dF& overscroll_delta,
cc::ElementId scroll_latched_element_id) override;
void SendScrollEndEventFromImplSide(
cc::ElementId scroll_latched_element_id) override;
void BeginMainFrame(base::TimeTicks frame_time) override;
void OnDeferMainFrameUpdatesChanged(bool) override;
void OnDeferCommitsChanged(bool) override;
void DidBeginMainFrame() override;
void RequestNewLayerTreeFrameSink(
LayerTreeFrameSinkCallback callback) override;
void DidCommitAndDrawCompositorFrame() override;
void WillCommitCompositorFrame() override;
void DidCommitCompositorFrame(base::TimeTicks commit_start_time) override;
void DidCompletePageScaleAnimation() override;
void RecordStartOfFrameMetrics() override;
void RecordEndOfFrameMetrics(
base::TimeTicks frame_begin_time,
cc::ActiveFrameSequenceTrackers trackers) override;
std::unique_ptr<cc::BeginMainFrameMetrics> GetBeginMainFrameMetrics()
override;
void BeginUpdateLayers() override;
void EndUpdateLayers() override;
void UpdateVisualState() override;
void WillBeginMainFrame() override;
cc::AnimationHost* AnimationHost() const;
cc::LayerTreeHost* LayerTreeHost() const;
scheduler::WebRenderWidgetSchedulingState* RendererWidgetSchedulingState()
const;
// Returns if we should gather begin main frame metrics. If there is no
// compositor thread this returns false.
static bool ShouldRecordBeginMainFrameMetrics();
void SetCursor(const ui::Cursor& cursor);
private:
std::unique_ptr<LayerTreeView> layer_tree_view_;
WidgetBaseClient* client_;
mojo::AssociatedRemote<mojom::blink::WidgetHost> widget_host_;
mojo::AssociatedReceiver<mojom::blink::Widget> receiver_;
std::unique_ptr<scheduler::WebRenderWidgetSchedulingState>
render_widget_scheduling_state_;
bool first_update_visual_state_after_hidden_ = false;
base::TimeTicks was_shown_time_ = base::TimeTicks::Now();
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_WIDGET_WIDGET_BASE_H_
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