cc/blink/web_content_layer_impl.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "cc/blink/web_content_layer_impl.h"
   6
   7 #include "cc/blink/web_display_item_list_impl.h"
   8 #include "cc/layers/picture_layer.h"
   9 #include "cc/playback/display_item_list_settings.h"
  10 #include "third_party/WebKit/public/platform/WebContentLayerClient.h"
  11 #include "third_party/WebKit/public/platform/WebFloatPoint.h"
  12 #include "third_party/WebKit/public/platform/WebFloatRect.h"
  13 #include "third_party/WebKit/public/platform/WebRect.h"
  14 #include "third_party/WebKit/public/platform/WebSize.h"
  15 #include "third_party/skia/include/utils/SkMatrix44.h"
  16
  17 using cc::PictureLayer;
  18
  19 namespace cc_blink {
  20
  21 static blink::WebContentLayerClient::PaintingControlSetting
  22 PaintingControlToWeb(
  23     cc::ContentLayerClient::PaintingControlSetting painting_control) {
  24   switch (painting_control) {
  25     case cc::ContentLayerClient::PAINTING_BEHAVIOR_NORMAL:
  26       return blink::WebContentLayerClient::PaintDefaultBehavior;
  27     case cc::ContentLayerClient::DISPLAY_LIST_CONSTRUCTION_DISABLED:
  28       return blink::WebContentLayerClient::DisplayListConstructionDisabled;
  29     case cc::ContentLayerClient::DISPLAY_LIST_CACHING_DISABLED:
  30       return blink::WebContentLayerClient::DisplayListCachingDisabled;
  31     case cc::ContentLayerClient::DISPLAY_LIST_PAINTING_DISABLED:
  32       return blink::WebContentLayerClient::DisplayListPaintingDisabled;
  33   }
  34   NOTREACHED();
  35   return blink::WebContentLayerClient::PaintDefaultBehavior;
  36 }
  37
  38 WebContentLayerImpl::WebContentLayerImpl(blink::WebContentLayerClient* client)
  39     : client_(client) {
  40   layer_ = make_scoped_ptr(new WebLayerImpl(
  41       PictureLayer::Create(WebLayerImpl::LayerSettings(), this)));
  42   layer_->layer()->SetIsDrawable(true);
  43 }
  44
  45 WebContentLayerImpl::~WebContentLayerImpl() {
  46   static_cast<PictureLayer*>(layer_->layer())->ClearClient();
  47 }
  48
  49 blink::WebLayer* WebContentLayerImpl::layer() {
  50   return layer_.get();
  51 }
  52
  53 void WebContentLayerImpl::setDoubleSided(bool double_sided) {
  54   layer_->layer()->SetDoubleSided(double_sided);
  55 }
  56
  57 void WebContentLayerImpl::PaintContents(
  58     SkCanvas* canvas,
  59     const gfx::Rect& clip,
  60     cc::ContentLayerClient::PaintingControlSetting painting_control) {
  61   if (!client_)
  62     return;
  63
  64   client_->paintContents(canvas, clip, PaintingControlToWeb(painting_control));
  65 }
  66
  67 scoped_refptr<cc::DisplayItemList>
  68 WebContentLayerImpl::PaintContentsToDisplayList(
  69     const gfx::Rect& clip,
  70     cc::ContentLayerClient::PaintingControlSetting painting_control) {
  71   cc::DisplayItemListSettings settings;
  72   settings.use_cached_picture = true;
  73
  74   scoped_refptr<cc::DisplayItemList> display_list =
  75       cc::DisplayItemList::Create(clip, settings);
  76   if (client_) {
  77     WebDisplayItemListImpl list(display_list.get());
  78     client_->paintContents(&list, clip, PaintingControlToWeb(painting_control));
  79   }
  80   display_list->Finalize();
  81   return display_list;
  82 }
  83
  84 bool WebContentLayerImpl::FillsBoundsCompletely() const {
  85   return false;
  86 }
  87
  88 size_t WebContentLayerImpl::GetApproximateUnsharedMemoryUsage() const {
  89   return client_->approximateUnsharedMemoryUsage();
  90 }
  91
  92 }  // namespace cc_blink