1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86
|
// Copyright 2020 The Chromium Authors
// 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_COMPOSITING_WIDGET_COMPOSITOR_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_WIDGET_COMPOSITING_WIDGET_COMPOSITOR_H_
#include "base/task/single_thread_task_runner.h"
#include "base/types/pass_key.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "third_party/blink/public/mojom/widget/platform_widget.mojom-blink.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/platform/widget/compositing/widget_swap_queue.h"
#include "third_party/blink/renderer/platform/wtf/thread_safe_ref_counted.h"
namespace cc {
class LayerTreeHost;
}
namespace blink {
class WidgetBase;
class WidgetCompositorPassKeyProvider {
public:
using PassKey = base::PassKey<WidgetCompositorPassKeyProvider>;
private:
static PassKey GetPassKey() { return PassKey(); }
friend class FakeWidgetCompositor;
friend class WidgetCompositor;
};
class PLATFORM_EXPORT WidgetCompositor
: public ThreadSafeRefCounted<WidgetCompositor>,
public mojom::blink::WidgetCompositor {
public:
static scoped_refptr<WidgetCompositor> Create(
base::WeakPtr<WidgetBase> widget_base,
scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
scoped_refptr<base::SingleThreadTaskRunner> compositor_task_runner,
mojo::PendingReceiver<mojom::blink::WidgetCompositor> receiver);
WidgetCompositor(
base::PassKey<WidgetCompositorPassKeyProvider>,
base::WeakPtr<WidgetBase> widget_base,
scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
scoped_refptr<base::SingleThreadTaskRunner> compositor_task_runner);
WidgetCompositor(const WidgetCompositor&) = delete;
WidgetCompositor& operator=(const WidgetCompositor&) = delete;
void Shutdown();
// mojom::WidgetCompositor:
void VisualStateRequest(VisualStateRequestCallback callback) override;
virtual cc::LayerTreeHost* LayerTreeHost() const;
protected:
friend ThreadSafeRefCounted<WidgetCompositor>;
~WidgetCompositor() override = default;
void BindOnThread(
mojo::PendingReceiver<mojom::blink::WidgetCompositor> receiver);
private:
void ResetOnThread();
void CreateQueueSwapPromise(base::OnceCallback<void(int)> drain_callback,
base::OnceClosure swap_callback,
VisualStateRequestCallback callback);
void VisualStateResponse();
void DrainQueue(int source_frame_number);
bool CalledOnValidCompositorThread();
// Note that |widget_base_| is safe to be accessed on the main thread.
base::WeakPtr<WidgetBase> widget_base_;
scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_;
scoped_refptr<base::SingleThreadTaskRunner> compositor_task_runner_;
mojo::Receiver<mojom::blink::WidgetCompositor> receiver_{this};
std::unique_ptr<WidgetSwapQueue> swap_queue_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_WIDGET_COMPOSITING_WIDGET_COMPOSITOR_H_
|