cc/resources/transform_display_item.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/resources/transform_display_item.h"
   6
   7 #include "third_party/skia/include/core/SkCanvas.h"
   8
   9 namespace cc {
  10
  11 TransformDisplayItem::TransformDisplayItem(const gfx::Transform& transform)
  12     : transform_(transform) {
  13 }
  14
  15 TransformDisplayItem::~TransformDisplayItem() {
  16 }
  17
  18 void TransformDisplayItem::Raster(SkCanvas* canvas,
  19                                   SkDrawPictureCallback* callback) const {
  20   canvas->save();
  21   if (!transform_.IsIdentity())
  22     canvas->concat(transform_.matrix());
  23 }
  24
  25 bool TransformDisplayItem::IsSuitableForGpuRasterization() const {
  26   return true;
  27 }
  28
  29 int TransformDisplayItem::ApproximateOpCount() const {
  30   return 1;
  31 }
  32
  33 size_t TransformDisplayItem::PictureMemoryUsage() const {
  34   return sizeof(gfx::Transform);
  35 }
  36
  37 EndTransformDisplayItem::EndTransformDisplayItem() {
  38 }
  39
  40 EndTransformDisplayItem::~EndTransformDisplayItem() {
  41 }
  42
  43 void EndTransformDisplayItem::Raster(SkCanvas* canvas,
  44                                      SkDrawPictureCallback* callback) const {
  45   canvas->restore();
  46 }
  47
  48 bool EndTransformDisplayItem::IsSuitableForGpuRasterization() const {
  49   return true;
  50 }
  51
  52 int EndTransformDisplayItem::ApproximateOpCount() const {
  53   return 0;
  54 }
  55
  56 size_t EndTransformDisplayItem::PictureMemoryUsage() const {
  57   return 0;
  58 }
  59
  60 }  // namespace cc