third_party/WebKit/Source/platform/graphics/PicturePattern.cpp

   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 "config.h"
   6 #include "platform/graphics/PicturePattern.h"
   7
   8 #include "platform/graphics/skia/SkiaUtils.h"
   9 #include "third_party/skia/include/core/SkPicture.h"
  10 #include "third_party/skia/include/core/SkShader.h"
  11
  12 namespace blink {
  13
  14 PassRefPtr<PicturePattern> PicturePattern::create(PassRefPtr<const SkPicture> picture,
  15     RepeatMode repeatMode)
  16 {
  17     return adoptRef(new PicturePattern(picture, repeatMode));
  18 }
  19
  20 PicturePattern::PicturePattern(PassRefPtr<const SkPicture> picture, RepeatMode mode)
  21     : Pattern(mode)
  22     , m_tilePicture(picture)
  23 {
  24     // All current clients use RepeatModeXY, so we only support this mode for now.
  25     ASSERT(isRepeatXY());
  26
  27     // FIXME: we don't have a good way to account for DL memory utilization.
  28 }
  29
  30 PicturePattern::~PicturePattern()
  31 {
  32 }
  33
  34 PassRefPtr<SkShader> PicturePattern::createShader()
  35 {
  36     SkMatrix localMatrix = affineTransformToSkMatrix(m_patternSpaceTransformation);
  37     SkRect tileBounds = m_tilePicture->cullRect();
  38
  39     return adoptRef(SkShader::CreatePictureShader(m_tilePicture.get(),
  40         SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, &localMatrix, &tileBounds));
  41 }
  42
  43 } // namespace