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 10namespace cc { 11 12scoped_refptr<PictureImageLayer> PictureImageLayer::Create() { 13 return make_scoped_refptr(new PictureImageLayer()); 14} 15 16PictureImageLayer::PictureImageLayer() : PictureLayer(this) {} 17 18PictureImageLayer::~PictureImageLayer() { 19 ClearClient(); 20} 21 22scoped_ptr<LayerImpl> PictureImageLayer::CreateLayerImpl( 23 LayerTreeImpl* tree_impl) { 24 return PictureImageLayerImpl::Create(tree_impl, id()).PassAs<LayerImpl>(); 25} 26 27bool PictureImageLayer::HasDrawableContent() const { 28 return !bitmap_.isNull() && PictureLayer::HasDrawableContent(); 29} 30 31void 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 UpdateDrawsContent(HasDrawableContent()); 41 SetNeedsDisplay(); 42} 43 44void PictureImageLayer::PaintContents( 45 SkCanvas* canvas, 46 const gfx::Rect& clip, 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 63bool PictureImageLayer::FillsBoundsCompletely() const { 64 return false; 65} 66 67} // namespace cc 68