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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 "cc/layers/surface_layer_impl.h"
#include "cc/output/swap_promise.h"
#include "cc/trees/layer_tree_host.h"
namespace cc {
class SatisfySwapPromise : public SwapPromise {
public:
SatisfySwapPromise(SurfaceSequence sequence,
const SurfaceLayer::SatisfyCallback& satisfy_callback)
: sequence_(sequence), satisfy_callback_(satisfy_callback) {}
~SatisfySwapPromise() override {}
private:
void DidSwap(CompositorFrameMetadata* metadata) override {
metadata->satisfies_sequences.push_back(sequence_.sequence);
}
void DidNotSwap(DidNotSwapReason reason) override {
satisfy_callback_.Run(sequence_);
}
int64 TraceId() const override { return 0; }
SurfaceSequence sequence_;
SurfaceLayer::SatisfyCallback satisfy_callback_;
DISALLOW_COPY_AND_ASSIGN(SatisfySwapPromise);
};
scoped_refptr<SurfaceLayer> SurfaceLayer::Create(
const SatisfyCallback& satisfy_callback,
const RequireCallback& require_callback) {
return make_scoped_refptr(
new SurfaceLayer(satisfy_callback, require_callback));
}
SurfaceLayer::SurfaceLayer(const SatisfyCallback& satisfy_callback,
const RequireCallback& require_callback)
: Layer(),
surface_scale_(1.f),
satisfy_callback_(satisfy_callback),
require_callback_(require_callback) {
}
SurfaceLayer::~SurfaceLayer() {
DCHECK(!layer_tree_host());
DCHECK(destroy_sequence_.is_null());
}
void SurfaceLayer::SetSurfaceId(SurfaceId surface_id,
float scale,
const gfx::Size& size) {
SatisfyDestroySequence();
surface_id_ = surface_id;
surface_size_ = size;
surface_scale_ = scale;
CreateNewDestroySequence();
UpdateDrawsContent(HasDrawableContent());
SetNeedsPushProperties();
}
scoped_ptr<LayerImpl> SurfaceLayer::CreateLayerImpl(LayerTreeImpl* tree_impl) {
return SurfaceLayerImpl::Create(tree_impl, id());
}
bool SurfaceLayer::HasDrawableContent() const {
return !surface_id_.is_null() && Layer::HasDrawableContent();
}
void SurfaceLayer::SetLayerTreeHost(LayerTreeHost* host) {
if (layer_tree_host() == host) {
Layer::SetLayerTreeHost(host);
return;
}
SatisfyDestroySequence();
Layer::SetLayerTreeHost(host);
CreateNewDestroySequence();
}
void SurfaceLayer::PushPropertiesTo(LayerImpl* layer) {
Layer::PushPropertiesTo(layer);
SurfaceLayerImpl* layer_impl = static_cast<SurfaceLayerImpl*>(layer);
layer_impl->SetSurfaceId(surface_id_);
}
void SurfaceLayer::CalculateContentsScale(float ideal_contents_scale,
float* contents_scale_x,
float* contents_scale_y,
gfx::Size* content_bounds) {
*content_bounds = surface_size_;
*contents_scale_x = surface_scale_;
*contents_scale_y = surface_scale_;
}
void SurfaceLayer::CreateNewDestroySequence() {
DCHECK(destroy_sequence_.is_null());
if (layer_tree_host()) {
destroy_sequence_ = layer_tree_host()->CreateSurfaceSequence();
require_callback_.Run(surface_id_, destroy_sequence_);
}
}
void SurfaceLayer::SatisfyDestroySequence() {
if (!layer_tree_host())
return;
DCHECK(!destroy_sequence_.is_null());
scoped_ptr<SatisfySwapPromise> satisfy(
new SatisfySwapPromise(destroy_sequence_, satisfy_callback_));
layer_tree_host()->QueueSwapPromise(satisfy.Pass());
destroy_sequence_ = SurfaceSequence();
}
} // namespace cc
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