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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.
#include "cc/layers/surface_layer.h"
#include <stdint.h>
#include "base/macros.h"
#include "base/memory/ptr_util.h"
#include "base/trace_event/trace_event.h"
#include "cc/layers/surface_layer_impl.h"
#include "cc/output/swap_promise.h"
#include "cc/surfaces/surface_sequence_generator.h"
#include "cc/trees/layer_tree_host.h"
#include "cc/trees/swap_promise_manager.h"
#include "cc/trees/task_runner_provider.h"
namespace cc {
class SatisfySwapPromise : public SwapPromise {
public:
SatisfySwapPromise(
base::Closure reference_returner,
scoped_refptr<base::SingleThreadTaskRunner> main_task_runner)
: reference_returner_(reference_returner),
main_task_runner_(std::move(main_task_runner)) {}
~SatisfySwapPromise() override {}
private:
void DidActivate() override {}
void WillSwap(CompositorFrameMetadata* metadata) override {}
void DidSwap() override {
main_task_runner_->PostTask(FROM_HERE, reference_returner_);
}
DidNotSwapAction DidNotSwap(DidNotSwapReason reason) override {
main_task_runner_->PostTask(FROM_HERE, reference_returner_);
return DidNotSwapAction::BREAK_PROMISE;
}
int64_t TraceId() const override { return 0; }
base::Closure reference_returner_;
scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_;
DISALLOW_COPY_AND_ASSIGN(SatisfySwapPromise);
};
scoped_refptr<SurfaceLayer> SurfaceLayer::Create(
scoped_refptr<SurfaceReferenceFactory> ref_factory) {
return make_scoped_refptr(new SurfaceLayer(std::move(ref_factory)));
}
SurfaceLayer::SurfaceLayer(scoped_refptr<SurfaceReferenceFactory> ref_factory)
: ref_factory_(std::move(ref_factory)) {}
SurfaceLayer::~SurfaceLayer() {
DCHECK(!layer_tree_host());
}
void SurfaceLayer::SetPrimarySurfaceInfo(const SurfaceInfo& surface_info) {
RemoveReference(std::move(primary_reference_returner_));
primary_surface_info_ = surface_info;
if (layer_tree_host()) {
primary_reference_returner_ = ref_factory_->CreateReference(
layer_tree_host(), primary_surface_info_.id());
}
UpdateDrawsContent(HasDrawableContent());
SetNeedsCommitNoRebuild();
}
void SurfaceLayer::SetFallbackSurfaceInfo(const SurfaceInfo& surface_info) {
RemoveReference(std::move(fallback_reference_returner_));
fallback_surface_info_ = surface_info;
if (layer_tree_host()) {
fallback_reference_returner_ = ref_factory_->CreateReference(
layer_tree_host(), fallback_surface_info_.id());
}
SetNeedsCommitNoRebuild();
}
void SurfaceLayer::SetStretchContentToFillBounds(
bool stretch_content_to_fill_bounds) {
stretch_content_to_fill_bounds_ = stretch_content_to_fill_bounds;
SetNeedsPushProperties();
}
std::unique_ptr<LayerImpl> SurfaceLayer::CreateLayerImpl(
LayerTreeImpl* tree_impl) {
return SurfaceLayerImpl::Create(tree_impl, id());
}
bool SurfaceLayer::HasDrawableContent() const {
return primary_surface_info_.is_valid() && Layer::HasDrawableContent();
}
void SurfaceLayer::SetLayerTreeHost(LayerTreeHost* host) {
if (layer_tree_host() == host) {
Layer::SetLayerTreeHost(host);
return;
}
RemoveReference(std::move(primary_reference_returner_));
RemoveReference(std::move(fallback_reference_returner_));
Layer::SetLayerTreeHost(host);
if (layer_tree_host()) {
if (primary_surface_info_.is_valid()) {
primary_reference_returner_ = ref_factory_->CreateReference(
layer_tree_host(), primary_surface_info_.id());
}
if (fallback_surface_info_.is_valid()) {
fallback_reference_returner_ = ref_factory_->CreateReference(
layer_tree_host(), fallback_surface_info_.id());
}
}
}
void SurfaceLayer::PushPropertiesTo(LayerImpl* layer) {
Layer::PushPropertiesTo(layer);
TRACE_EVENT0("cc", "SurfaceLayer::PushPropertiesTo");
SurfaceLayerImpl* layer_impl = static_cast<SurfaceLayerImpl*>(layer);
layer_impl->SetPrimarySurfaceInfo(primary_surface_info_);
layer_impl->SetFallbackSurfaceInfo(fallback_surface_info_);
layer_impl->SetStretchContentToFillBounds(stretch_content_to_fill_bounds_);
}
void SurfaceLayer::RemoveReference(base::Closure reference_returner) {
if (!reference_returner)
return;
auto swap_promise = base::MakeUnique<SatisfySwapPromise>(
std::move(reference_returner),
layer_tree_host()->GetTaskRunnerProvider()->MainThreadTaskRunner());
layer_tree_host()->GetSwapPromiseManager()->QueueSwapPromise(
std::move(swap_promise));
}
} // namespace cc
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