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| 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/image_layer.h" | |
| 6 | |
| 7 #include "base/compiler_specific.h" | |
| 8 #include "cc/resources/image_layer_updater.h" | |
| 9 #include "cc/resources/layer_updater.h" | |
| 10 #include "cc/resources/prioritized_resource.h" | |
| 11 #include "cc/resources/resource_update_queue.h" | |
| 12 #include "cc/trees/layer_tree_host.h" | |
| 13 | |
| 14 namespace cc { | |
| 15 | |
| 16 scoped_refptr<ImageLayer> ImageLayer::Create() { | |
| 17 return make_scoped_refptr(new ImageLayer()); | |
| 18 } | |
| 19 | |
| 20 ImageLayer::ImageLayer() : TiledLayer() {} | |
| 21 | |
| 22 ImageLayer::~ImageLayer() {} | |
| 23 | |
| 24 void ImageLayer::SetBitmap(const SkBitmap& bitmap) { | |
| 25 // SetBitmap() currently gets called whenever there is any | |
| 26 // style change that affects the layer even if that change doesn't | |
| 27 // affect the actual contents of the image (e.g. a CSS animation). | |
| 28 // With this check in place we avoid unecessary texture uploads. | |
| 29 if (bitmap.pixelRef() && bitmap.pixelRef() == bitmap_.pixelRef()) | |
| 30 return; | |
| 31 | |
| 32 bitmap_ = bitmap; | |
| 33 UpdateDrawsContent(HasDrawableContent()); | |
| 34 SetNeedsDisplay(); | |
| 35 } | |
| 36 | |
| 37 bool ImageLayer::HasDrawableContent() const { | |
| 38 return !bitmap_.isNull() && TiledLayer::HasDrawableContent(); | |
| 39 } | |
| 40 | |
| 41 void ImageLayer::SetTexturePriorities(const PriorityCalculator& priority_calc) { | |
| 42 // Update the tile data before creating all the layer's tiles. | |
| 43 UpdateTileSizeAndTilingOption(); | |
| 44 | |
| 45 TiledLayer::SetTexturePriorities(priority_calc); | |
| 46 } | |
| 47 | |
| 48 bool ImageLayer::Update(ResourceUpdateQueue* queue, | |
| 49 const OcclusionTracker<Layer>* occlusion) { | |
| 50 CreateUpdaterIfNeeded(); | |
| 51 if (!updater_->UsingBitmap(bitmap_)) { | |
| 52 updater_->SetBitmap(bitmap_); | |
| 53 UpdateTileSizeAndTilingOption(); | |
| 54 InvalidateContentRect(gfx::Rect(content_bounds())); | |
| 55 } | |
| 56 return TiledLayer::Update(queue, occlusion); | |
| 57 } | |
| 58 | |
| 59 void ImageLayer::CreateUpdaterIfNeeded() { | |
| 60 if (updater_.get()) | |
| 61 return; | |
| 62 | |
| 63 updater_ = ImageLayerUpdater::Create(); | |
| 64 SetTextureFormat( | |
| 65 layer_tree_host()->GetRendererCapabilities().best_texture_format); | |
| 66 } | |
| 67 | |
| 68 LayerUpdater* ImageLayer::Updater() const { | |
| 69 return updater_.get(); | |
| 70 } | |
| 71 | |
| 72 void ImageLayer::CalculateContentsScale(float ideal_contents_scale, | |
| 73 float* contents_scale_x, | |
| 74 float* contents_scale_y, | |
| 75 gfx::Size* content_bounds) { | |
| 76 *contents_scale_x = ImageContentsScaleX(); | |
| 77 *contents_scale_y = ImageContentsScaleY(); | |
| 78 *content_bounds = gfx::Size(bitmap_.width(), bitmap_.height()); | |
| 79 } | |
| 80 | |
| 81 void ImageLayer::OnOutputSurfaceCreated() { | |
| 82 SetTextureFormat( | |
| 83 layer_tree_host()->GetRendererCapabilities().best_texture_format); | |
| 84 TiledLayer::OnOutputSurfaceCreated(); | |
| 85 } | |
| 86 | |
| 87 float ImageLayer::ImageContentsScaleX() const { | |
| 88 if (bounds().IsEmpty() || bitmap_.width() == 0) | |
| 89 return 1; | |
| 90 return static_cast<float>(bitmap_.width()) / bounds().width(); | |
| 91 } | |
| 92 | |
| 93 float ImageLayer::ImageContentsScaleY() const { | |
| 94 if (bounds().IsEmpty() || bitmap_.height() == 0) | |
| 95 return 1; | |
| 96 return static_cast<float>(bitmap_.height()) / bounds().height(); | |
| 97 } | |
| 98 | |
| 99 } // namespace cc | |
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Chromium Code Reviews
Issue 1057283003:
Remove parts of //cc we aren't using (Closed)
Base URL: git@github.com:domokit/mojo.git@master