cc/bitmap_skpicture_content_layer_updater.cc

   1 // Copyright 2011 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/bitmap_skpicture_content_layer_updater.h"
   6
   7 #include "base/time.h"
   8 #include "cc/layer_painter.h"
   9 #include "cc/rendering_stats.h"
  10 #include "cc/resource_update_queue.h"
  11 #include "third_party/skia/include/core/SkCanvas.h"
  12 #include "third_party/skia/include/core/SkDevice.h"
  13
  14 namespace cc {
  15
  16 BitmapSkPictureContentLayerUpdater::Resource::Resource(BitmapSkPictureContentLayerUpdater* updater, scoped_ptr<PrioritizedResource> texture)
  17     : ContentLayerUpdater::Resource(texture.Pass())
  18     , m_updater(updater)
  19 {
  20 }
  21
  22 void BitmapSkPictureContentLayerUpdater::Resource::update(ResourceUpdateQueue& queue, const gfx::Rect& sourceRect, const gfx::Vector2d& destOffset, bool partialUpdate, RenderingStats& stats)
  23 {
  24     m_bitmap.setConfig(SkBitmap::kARGB_8888_Config, sourceRect.width(), sourceRect.height());
  25     m_bitmap.allocPixels();
  26     m_bitmap.setIsOpaque(m_updater->layerIsOpaque());
  27     SkDevice device(m_bitmap);
  28     SkCanvas canvas(&device);
  29     base::TimeTicks paintBeginTime = base::TimeTicks::Now();
  30     updater()->paintContentsRect(&canvas, sourceRect, stats);
  31     stats.totalPaintTimeInSeconds += (base::TimeTicks::Now() - paintBeginTime).InSecondsF();
  32
  33     ResourceUpdate upload = ResourceUpdate::Create(
  34         texture(), &m_bitmap, sourceRect, sourceRect, destOffset);
  35     if (partialUpdate)
  36         queue.appendPartialUpload(upload);
  37     else
  38         queue.appendFullUpload(upload);
  39 }
  40
  41 scoped_refptr<BitmapSkPictureContentLayerUpdater> BitmapSkPictureContentLayerUpdater::create(scoped_ptr<LayerPainter> painter)
  42 {
  43     return make_scoped_refptr(new BitmapSkPictureContentLayerUpdater(painter.Pass()));
  44 }
  45
  46 BitmapSkPictureContentLayerUpdater::BitmapSkPictureContentLayerUpdater(scoped_ptr<LayerPainter> painter)
  47     : SkPictureContentLayerUpdater(painter.Pass())
  48 {
  49 }
  50
  51 BitmapSkPictureContentLayerUpdater::~BitmapSkPictureContentLayerUpdater()
  52 {
  53 }
  54
  55 scoped_ptr<LayerUpdater::Resource> BitmapSkPictureContentLayerUpdater::createResource(PrioritizedResourceManager* manager)
  56 {
  57     return scoped_ptr<LayerUpdater::Resource>(new Resource(this, PrioritizedResource::create(manager)));
  58 }
  59
  60 void BitmapSkPictureContentLayerUpdater::paintContentsRect(SkCanvas* canvas, const gfx::Rect& sourceRect, RenderingStats& stats)
  61 {
  62     // Translate the origin of contentRect to that of sourceRect.
  63     canvas->translate(contentRect().x() - sourceRect.x(),
  64                       contentRect().y() - sourceRect.y());
  65     base::TimeTicks rasterizeBeginTime = base::TimeTicks::Now();
  66     drawPicture(canvas);
  67     stats.totalRasterizeTimeInSeconds += (base::TimeTicks::Now() - rasterizeBeginTime).InSecondsF();
  68     stats.totalPixelsRasterized += sourceRect.width() * sourceRect.height();
  69 }
  70
  71 }  // namespace cc