cc/playback/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/playback/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() {
  14 }
  15
  16 ClipPathDisplayItem::~ClipPathDisplayItem() {
  17 }
  18
  19 void ClipPathDisplayItem::SetNew(const SkPath& clip_path,
  20                                  SkRegion::Op clip_op,
  21                                  bool antialias) {
  22   clip_path_ = clip_path;
  23   clip_op_ = clip_op;
  24   antialias_ = antialias;
  25
  26   // The size of SkPath's external storage is not currently accounted for (and
  27   // may well be shared anyway).
  28   DisplayItem::SetNew(true /* suitable_for_gpu_raster */, 1 /* op_count */,
  29                       0 /* external_memory_usage */);
  30 }
  31
  32 void ClipPathDisplayItem::Raster(SkCanvas* canvas,
  33                                  const gfx::Rect& canvas_target_playback_rect,
  34                                  SkPicture::AbortCallback* callback) const {
  35   canvas->save();
  36   canvas->clipPath(clip_path_, clip_op_, antialias_);
  37 }
  38
  39 void ClipPathDisplayItem::AsValueInto(
  40     base::trace_event::TracedValue* array) const {
  41   array->AppendString(base::StringPrintf("ClipPathDisplayItem length: %d",
  42                                          clip_path_.countPoints()));
  43 }
  44
  45 EndClipPathDisplayItem::EndClipPathDisplayItem() {
  46   DisplayItem::SetNew(true /* suitable_for_gpu_raster */, 0 /* op_count */,
  47                       0 /* external_memory_usage */);
  48 }
  49
  50 EndClipPathDisplayItem::~EndClipPathDisplayItem() {
  51 }
  52
  53 void EndClipPathDisplayItem::Raster(
  54     SkCanvas* canvas,
  55     const gfx::Rect& canvas_target_playback_rect,
  56     SkPicture::AbortCallback* callback) const {
  57   canvas->restore();
  58 }
  59
  60 void EndClipPathDisplayItem::AsValueInto(
  61     base::trace_event::TracedValue* array) const {
  62   array->AppendString("EndClipPathDisplayItem");
  63 }
  64
  65 }  // namespace cc