cc/resources/float_clip_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/float_clip_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 #include "ui/gfx/skia_util.h"
  11
  12 namespace cc {
  13
  14 FloatClipDisplayItem::FloatClipDisplayItem(gfx::RectF clip_rect)
  15     : clip_rect_(clip_rect) {
  16 }
  17
  18 FloatClipDisplayItem::~FloatClipDisplayItem() {
  19 }
  20
  21 void FloatClipDisplayItem::Raster(SkCanvas* canvas,
  22                                   SkDrawPictureCallback* callback) const {
  23   canvas->save();
  24   canvas->clipRect(gfx::RectFToSkRect(clip_rect_));
  25 }
  26
  27 bool FloatClipDisplayItem::IsSuitableForGpuRasterization() const {
  28   return true;
  29 }
  30
  31 int FloatClipDisplayItem::ApproximateOpCount() const {
  32   return 1;
  33 }
  34
  35 size_t FloatClipDisplayItem::PictureMemoryUsage() const {
  36   return sizeof(gfx::RectF);
  37 }
  38
  39 void FloatClipDisplayItem::AsValueInto(base::debug::TracedValue* array) const {
  40   array->AppendString(base::StringPrintf("FloatClipDisplayItem rect: [%s]",
  41                                          clip_rect_.ToString().c_str()));
  42 }
  43
  44 EndFloatClipDisplayItem::EndFloatClipDisplayItem() {
  45 }
  46
  47 EndFloatClipDisplayItem::~EndFloatClipDisplayItem() {
  48 }
  49
  50 void EndFloatClipDisplayItem::Raster(SkCanvas* canvas,
  51                                      SkDrawPictureCallback* callback) const {
  52   canvas->restore();
  53 }
  54
  55 bool EndFloatClipDisplayItem::IsSuitableForGpuRasterization() const {
  56   return true;
  57 }
  58
  59 int EndFloatClipDisplayItem::ApproximateOpCount() const {
  60   return 0;
  61 }
  62
  63 size_t EndFloatClipDisplayItem::PictureMemoryUsage() const {
  64   return 0;
  65 }
  66
  67 void EndFloatClipDisplayItem::AsValueInto(
  68     base::debug::TracedValue* array) const {
  69   array->AppendString("EndFloatClipDisplayItem");
  70 }
  71
  72 }  // namespace cc