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// Copyright 2018 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 "third_party/blink/renderer/platform/testing/viewport_layers_setup.h"
#include <memory>
#include "cc/layers/picture_layer.h"
#include "cc/trees/layer_tree_host.h"
#include "third_party/blink/renderer/platform/graphics/graphics_layer.h"
#include "third_party/blink/renderer/platform/graphics/paint/property_tree_state.h"
#include "third_party/blink/renderer/platform/testing/fake_graphics_layer.h"
#include "third_party/blink/renderer/platform/testing/fake_graphics_layer_client.h"
#include "third_party/blink/renderer/platform/testing/layer_tree_host_embedder.h"
namespace blink {
ViewportLayersSetup::ViewportLayersSetup() {
clip_layer_ = std::make_unique<FakeGraphicsLayer>(client_);
scroll_elasticity_layer_ = std::make_unique<FakeGraphicsLayer>(client_);
page_scale_layer_ = std::make_unique<FakeGraphicsLayer>(client_);
graphics_layer_ = std::make_unique<FakeGraphicsLayer>(client_);
graphics_layer_->SetDrawsContent(true);
clip_layer_->AddChild(scroll_elasticity_layer_.get());
scroll_elasticity_layer_->AddChild(page_scale_layer_.get());
page_scale_layer_->AddChild(graphics_layer_.get());
graphics_layer_->CcLayer()->SetScrollable(clip_layer_->CcLayer()->bounds());
layer_tree_ = std::make_unique<LayerTreeHostEmbedder>();
layer_tree_->layer_tree_host()->SetRootLayer(clip_layer_->CcLayer());
scroll_elasticity_layer_->SetElementId(cc::LayerIdToElementIdForTesting(
scroll_elasticity_layer_->CcLayer()->id()));
cc::LayerTreeHost::ViewportLayers viewport_layers;
viewport_layers.overscroll_elasticity_element_id =
scroll_elasticity_layer_->GetElementId();
viewport_layers.page_scale = page_scale_layer_->CcLayer();
viewport_layers.inner_viewport_container = clip_layer_->CcLayer();
viewport_layers.inner_viewport_scroll = graphics_layer_->CcLayer();
layer_tree_->layer_tree_host()->RegisterViewportLayers(viewport_layers);
layer_tree_->layer_tree_host()->SetViewportSizeAndScale(
gfx::Size(1, 1), /*device_scale_factor=*/1.f, viz::LocalSurfaceId());
graphics_layer_->SetLayerState(PropertyTreeState(PropertyTreeState::Root()),
IntPoint());
}
ViewportLayersSetup::~ViewportLayersSetup() = default;
cc::LayerTreeHost* ViewportLayersSetup::layer_tree_host() {
return layer_tree_->layer_tree_host();
}
cc::AnimationHost* ViewportLayersSetup::animation_host() {
return layer_tree_->animation_host();
}
} // namespace blink
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