1 // Copyright 2012 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/image_layer_updater.h" 6 #include "cc/resources/prioritized_resource.h" 7 #include "cc/resources/resource_update_queue.h" 8 9 namespace cc { 10 11 ImageLayerUpdater::Resource::Resource(ImageLayerUpdater* updater, 12 scoped_ptr<PrioritizedResource> texture) 13 : LayerUpdater::Resource(texture.Pass()), updater_(updater) {} 14 15 ImageLayerUpdater::Resource::~Resource() {} 16 17 void ImageLayerUpdater::Resource::Update(ResourceUpdateQueue* queue, 18 const gfx::Rect& source_rect, 19 const gfx::Vector2d& dest_offset, 20 bool partial_update) { 21 updater_->UpdateTexture( 22 queue, texture(), source_rect, dest_offset, partial_update); 23 } 24 25 // static 26 scoped_refptr<ImageLayerUpdater> ImageLayerUpdater::Create() { 27 return make_scoped_refptr(new ImageLayerUpdater()); 28 } 29 30 scoped_ptr<LayerUpdater::Resource> ImageLayerUpdater::CreateResource( 31 PrioritizedResourceManager* manager) { 32 return scoped_ptr<LayerUpdater::Resource>( 33 new Resource(this, PrioritizedResource::Create(manager))); 34 } 35 36 void ImageLayerUpdater::UpdateTexture(ResourceUpdateQueue* queue, 37 PrioritizedResource* texture, 38 const gfx::Rect& source_rect, 39 const gfx::Vector2d& dest_offset, 40 bool partial_update) { 41 // Source rect should never go outside the image pixels, even if this 42 // is requested because the texture extends outside the image. 43 gfx::Rect clipped_source_rect = source_rect; 44 gfx::Rect image_rect = gfx::Rect(0, 0, bitmap_.width(), bitmap_.height()); 45 clipped_source_rect.Intersect(image_rect); 46 47 gfx::Vector2d clipped_dest_offset = 48 dest_offset + 49 gfx::Vector2d(clipped_source_rect.origin() - source_rect.origin()); 50 51 ResourceUpdate upload = ResourceUpdate::Create( 52 texture, &bitmap_, image_rect, clipped_source_rect, clipped_dest_offset); 53 if (partial_update) 54 queue->AppendPartialUpload(upload); 55 else 56 queue->AppendFullUpload(upload); 57 } 58 59 void ImageLayerUpdater::SetBitmap(const SkBitmap& bitmap) { 60 DCHECK(bitmap.pixelRef()); 61 bitmap_ = bitmap; 62 } 63 64 bool ImageLayerUpdater::UsingBitmap(const SkBitmap& bitmap) const { 65 return bitmap.pixelRef() == bitmap_.pixelRef(); 66 } 67 68 } // namespace cc 69
