cc/blink/web_display_item_list_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_display_item_list_impl.h"
   6
   7 #include <vector>
   8
   9 #include "cc/blink/web_filter_operations_impl.h"
  10 #include "cc/resources/clip_display_item.h"
  11 #include "cc/resources/clip_path_display_item.h"
  12 #include "cc/resources/compositing_display_item.h"
  13 #include "cc/resources/drawing_display_item.h"
  14 #include "cc/resources/filter_display_item.h"
  15 #include "cc/resources/float_clip_display_item.h"
  16 #include "cc/resources/transform_display_item.h"
  17 #include "skia/ext/refptr.h"
  18 #include "third_party/WebKit/public/platform/WebFloatRect.h"
  19 #include "third_party/WebKit/public/platform/WebRect.h"
  20 #include "third_party/skia/include/core/SkColorFilter.h"
  21 #include "third_party/skia/include/core/SkPicture.h"
  22 #include "third_party/skia/include/utils/SkMatrix44.h"
  23 #include "ui/gfx/geometry/safe_integer_conversions.h"
  24 #include "ui/gfx/transform.h"
  25
  26 namespace cc_blink {
  27
  28 WebDisplayItemListImpl::WebDisplayItemListImpl(
  29     cc::DisplayItemList* display_list)
  30     : display_item_list_(display_list) {
  31 }
  32
  33 void WebDisplayItemListImpl::appendDrawingItem(const SkPicture* picture) {
  34   display_item_list_->AppendItem(cc::DrawingDisplayItem::Create(
  35       skia::SharePtr(const_cast<SkPicture*>(picture))));
  36 }
  37
  38 void WebDisplayItemListImpl::appendClipItem(
  39     const blink::WebRect& clip_rect,
  40     const blink::WebVector<SkRRect>& rounded_clip_rects) {
  41   std::vector<SkRRect> rounded_rects;
  42   for (size_t i = 0; i < rounded_clip_rects.size(); ++i) {
  43     rounded_rects.push_back(rounded_clip_rects[i]);
  44   }
  45   display_item_list_->AppendItem(
  46       cc::ClipDisplayItem::Create(clip_rect, rounded_rects));
  47 }
  48
  49 void WebDisplayItemListImpl::appendEndClipItem() {
  50   display_item_list_->AppendItem(cc::EndClipDisplayItem::Create());
  51 }
  52
  53 void WebDisplayItemListImpl::appendClipPathItem(const SkPath& clip_path,
  54                                                 SkRegion::Op clip_op,
  55                                                 bool antialias) {
  56   display_item_list_->AppendItem(
  57       cc::ClipPathDisplayItem::Create(clip_path, clip_op, antialias));
  58 }
  59
  60 void WebDisplayItemListImpl::appendEndClipPathItem() {
  61   display_item_list_->AppendItem(cc::EndClipPathDisplayItem::Create());
  62 }
  63
  64 void WebDisplayItemListImpl::appendFloatClipItem(
  65     const blink::WebFloatRect& clip_rect) {
  66   display_item_list_->AppendItem(cc::FloatClipDisplayItem::Create(clip_rect));
  67 }
  68
  69 void WebDisplayItemListImpl::appendEndFloatClipItem() {
  70   display_item_list_->AppendItem(cc::EndFloatClipDisplayItem::Create());
  71 }
  72
  73 void WebDisplayItemListImpl::appendTransformItem(const SkMatrix44& matrix) {
  74   gfx::Transform transform;
  75   transform.matrix() = matrix;
  76   display_item_list_->AppendItem(cc::TransformDisplayItem::Create(transform));
  77 }
  78
  79 void WebDisplayItemListImpl::appendEndTransformItem() {
  80   display_item_list_->AppendItem(cc::EndTransformDisplayItem::Create());
  81 }
  82
  83 void WebDisplayItemListImpl::appendCompositingItem(
  84     float opacity,
  85     SkXfermode::Mode xfermode,
  86     SkRect* bounds,
  87     SkColorFilter* color_filter) {
  88   DCHECK_GE(opacity, 0.f);
  89   DCHECK_LE(opacity, 1.f);
  90   // TODO(ajuma): This should really be rounding instead of flooring the alpha
  91   // value, but that breaks slimming paint reftests.
  92   display_item_list_->AppendItem(cc::CompositingDisplayItem::Create(
  93       static_cast<uint8_t>(gfx::ToFlooredInt(255 * opacity)), xfermode, bounds,
  94       skia::SharePtr(color_filter)));
  95 }
  96
  97 void WebDisplayItemListImpl::appendEndCompositingItem() {
  98   display_item_list_->AppendItem(cc::EndCompositingDisplayItem::Create());
  99 }
 100
 101 void WebDisplayItemListImpl::appendFilterItem(
 102     const blink::WebFilterOperations& filters,
 103     const blink::WebFloatRect& bounds) {
 104   const WebFilterOperationsImpl& filters_impl =
 105       static_cast<const WebFilterOperationsImpl&>(filters);
 106   display_item_list_->AppendItem(
 107       cc::FilterDisplayItem::Create(filters_impl.AsFilterOperations(), bounds));
 108 }
 109
 110 void WebDisplayItemListImpl::appendEndFilterItem() {
 111   display_item_list_->AppendItem(cc::EndFilterDisplayItem::Create());
 112 }
 113
 114 void WebDisplayItemListImpl::appendScrollItem(
 115     const blink::WebSize& scrollOffset,
 116     ScrollContainerId) {
 117   SkMatrix44 matrix;
 118   matrix.setTranslate(-scrollOffset.width, -scrollOffset.height, 0);
 119   appendTransformItem(matrix);
 120 }
 121
 122 void WebDisplayItemListImpl::appendEndScrollItem() {
 123   appendEndTransformItem();
 124 }
 125
 126 WebDisplayItemListImpl::~WebDisplayItemListImpl() {
 127 }
 128
 129 }  // namespace cc_blink