text: // 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/blink/web_content_layer_impl.h"
  
  #include <stddef.h>
  
  #include "base/command_line.h"
  #include "base/memory/ptr_util.h"
  #include "cc/base/switches.h"
  #include "cc/blink/web_display_item_list_impl.h"
  #include "cc/layers/picture_layer.h"
  #include "third_party/WebKit/public/platform/WebContentLayerClient.h"
  #include "third_party/WebKit/public/platform/WebFloatPoint.h"
  #include "third_party/WebKit/public/platform/WebFloatRect.h"
  #include "third_party/WebKit/public/platform/WebRect.h"
  #include "third_party/WebKit/public/platform/WebSize.h"
  #include "third_party/skia/include/core/SkMatrix44.h"
  
  using cc::PictureLayer;
  
  namespace cc_blink {
  
  static blink::WebContentLayerClient::PaintingControlSetting
  PaintingControlToWeb(
      cc::ContentLayerClient::PaintingControlSetting painting_control) {
    switch (painting_control) {
      case cc::ContentLayerClient::PAINTING_BEHAVIOR_NORMAL:
        return blink::WebContentLayerClient::kPaintDefaultBehavior;
      case cc::ContentLayerClient::PAINTING_BEHAVIOR_NORMAL_FOR_TEST:
        return blink::WebContentLayerClient::kPaintDefaultBehaviorForTest;
      case cc::ContentLayerClient::DISPLAY_LIST_CONSTRUCTION_DISABLED:
        return blink::WebContentLayerClient::kDisplayListConstructionDisabled;
      case cc::ContentLayerClient::DISPLAY_LIST_CACHING_DISABLED:
        return blink::WebContentLayerClient::kDisplayListCachingDisabled;
      case cc::ContentLayerClient::DISPLAY_LIST_PAINTING_DISABLED:
        return blink::WebContentLayerClient::kDisplayListPaintingDisabled;
      case cc::ContentLayerClient::SUBSEQUENCE_CACHING_DISABLED:
        return blink::WebContentLayerClient::kSubsequenceCachingDisabled;
      case cc::ContentLayerClient::PARTIAL_INVALIDATION:
        return blink::WebContentLayerClient::kPartialInvalidation;
    }
    NOTREACHED();
    return blink::WebContentLayerClient::kPaintDefaultBehavior;
  }
  
  WebContentLayerImpl::WebContentLayerImpl(blink::WebContentLayerClient* client)
      : client_(client) {
    layer_ = base::MakeUnique<WebLayerImpl>(PictureLayer::Create(this));
    layer_->layer()->SetIsDrawable(true);
  }
  
  WebContentLayerImpl::~WebContentLayerImpl() {
    static_cast<PictureLayer*>(layer_->layer())->ClearClient();
  }
  
  blink::WebLayer* WebContentLayerImpl::Layer() {
    return layer_.get();
  }
  
  void WebContentLayerImpl::SetTransformedRasterizationAllowed(bool allowed) {
    static_cast<PictureLayer*>(layer_->layer())
        ->SetTransformedRasterizationAllowed(allowed);
  }
  
  bool WebContentLayerImpl::TransformedRasterizationAllowed() const {
    return static_cast<PictureLayer*>(layer_->layer())
        ->transformed_rasterization_allowed();
  }
  
  gfx::Rect WebContentLayerImpl::PaintableRegion() {
    return client_->PaintableRegion();
  }
  
  scoped_refptr<cc::DisplayItemList>
  WebContentLayerImpl::PaintContentsToDisplayList(
      cc::ContentLayerClient::PaintingControlSetting painting_control) {
    auto display_list = make_scoped_refptr(new cc::DisplayItemList);
    if (client_) {
      WebDisplayItemListImpl list(display_list.get());
      client_->PaintContents(&list, PaintingControlToWeb(painting_control));
    }
    display_list->Finalize();
    return display_list;
  }
  
  bool WebContentLayerImpl::FillsBoundsCompletely() const {
    return false;
  }
  
  size_t WebContentLayerImpl::GetApproximateUnsharedMemoryUsage() const {
    return client_->ApproximateUnsharedMemoryUsage();
  }
  
  }  // namespace cc_blink
  