1 // Copyright 2010 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/layers/picture_image_layer.h" 6 7 #include "cc/layers/picture_image_layer_impl.h" 8 #include "third_party/skia/include/core/SkCanvas.h" 9 10 namespace cc { 11 12 scoped_refptr<PictureImageLayer> PictureImageLayer::Create() { 13 return make_scoped_refptr(new PictureImageLayer()); 14 } 15 16 PictureImageLayer::PictureImageLayer() : PictureLayer(this) {} 17 18 PictureImageLayer::~PictureImageLayer() { 19 ClearClient(); 20 } 21 22 scoped_ptr<LayerImpl> PictureImageLayer::CreateLayerImpl( 23 LayerTreeImpl* tree_impl) { 24 return PictureImageLayerImpl::Create(tree_impl, id()).PassAs<LayerImpl>(); 25 } 26 27 bool PictureImageLayer::DrawsContent() const { 28 return !bitmap_.isNull() && PictureLayer::DrawsContent(); 29 } 30 31 void PictureImageLayer::SetBitmap(const SkBitmap& bitmap) { 32 // SetBitmap() currently gets called whenever there is any 33 // style change that affects the layer even if that change doesn't 34 // affect the actual contents of the image (e.g. a CSS animation). 35 // With this check in place we avoid unecessary texture uploads. 36 if (bitmap.pixelRef() && bitmap.pixelRef() == bitmap_.pixelRef()) 37 return; 38 39 bitmap_ = bitmap; 40 SetNeedsDisplay(); 41 } 42 43 void PictureImageLayer::PaintContents( 44 SkCanvas* canvas, 45 const gfx::Rect& clip, 46 gfx::RectF* opaque, 47 ContentLayerClient::GraphicsContextStatus gc_status) { 48 if (!bitmap_.width() || !bitmap_.height()) 49 return; 50 51 SkScalar content_to_layer_scale_x = 52 SkFloatToScalar(static_cast<float>(bounds().width()) / bitmap_.width()); 53 SkScalar content_to_layer_scale_y = 54 SkFloatToScalar(static_cast<float>(bounds().height()) / bitmap_.height()); 55 canvas->scale(content_to_layer_scale_x, content_to_layer_scale_y); 56 57 // Because Android WebView resourceless software draw mode rasters directly 58 // to the root canvas, this draw must use the kSrcOver_Mode so that 59 // transparent images blend correctly. 60 canvas->drawBitmap(bitmap_, 0, 0); 61 } 62 63 bool PictureImageLayer::FillsBoundsCompletely() const { 64 return false; 65 } 66 67 } // namespace cc 68
