cc/resources/clip_path_display_item.cc

   1 // Copyright 2015 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/resources/clip_path_display_item.h"
   6
   7 #include "base/strings/stringprintf.h"
   8 #include "base/trace_event/trace_event_argument.h"
   9 #include "third_party/skia/include/core/SkCanvas.h"
  10
  11 namespace cc {
  12
  13 ClipPathDisplayItem::ClipPathDisplayItem(const SkPath& clip_path,
  14                                          SkRegion::Op clip_op,
  15                                          bool antialias)
  16     : clip_path_(clip_path), clip_op_(clip_op), antialias_(antialias) {
  17 }
  18
  19 ClipPathDisplayItem::~ClipPathDisplayItem() {
  20 }
  21
  22 void ClipPathDisplayItem::Raster(SkCanvas* canvas,
  23                                  SkDrawPictureCallback* callback) const {
  24   canvas->save();
  25   canvas->clipPath(clip_path_, clip_op_, antialias_);
  26 }
  27
  28 bool ClipPathDisplayItem::IsSuitableForGpuRasterization() const {
  29   return true;
  30 }
  31
  32 int ClipPathDisplayItem::ApproximateOpCount() const {
  33   return 1;
  34 }
  35
  36 size_t ClipPathDisplayItem::PictureMemoryUsage() const {
  37   size_t total_size = sizeof(SkPath) + sizeof(SkRegion::Op) + sizeof(bool);
  38   return total_size;
  39 }
  40
  41 void ClipPathDisplayItem::AsValueInto(
  42     base::trace_event::TracedValue* array) const {
  43   array->AppendString(base::StringPrintf("ClipPathDisplayItem length: %d",
  44                                          clip_path_.countPoints()));
  45 }
  46
  47 EndClipPathDisplayItem::EndClipPathDisplayItem() {
  48 }
  49
  50 EndClipPathDisplayItem::~EndClipPathDisplayItem() {
  51 }
  52
  53 void EndClipPathDisplayItem::Raster(SkCanvas* canvas,
  54                                     SkDrawPictureCallback* callback) const {
  55   canvas->restore();
  56 }
  57
  58 bool EndClipPathDisplayItem::IsSuitableForGpuRasterization() const {
  59   return true;
  60 }
  61
  62 int EndClipPathDisplayItem::ApproximateOpCount() const {
  63   return 0;
  64 }
  65
  66 size_t EndClipPathDisplayItem::PictureMemoryUsage() const {
  67   return 0;
  68 }
  69
  70 void EndClipPathDisplayItem::AsValueInto(
  71     base::trace_event::TracedValue* array) const {
  72   array->AppendString("EndClipPathDisplayItem");
  73 }
  74
  75 }  // namespace cc