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/resources/skpicture_content_layer_updater.h" 6 7 #include "base/debug/trace_event.h" 8 #include "cc/debug/rendering_stats_instrumentation.h" 9 #include "cc/resources/layer_painter.h" 10 #include "cc/resources/prioritized_resource.h" 11 #include "cc/resources/resource_update_queue.h" 12 #include "third_party/skia/include/core/SkCanvas.h" 13 #include "third_party/skia/include/core/SkPictureRecorder.h" 14 15 namespace cc { 16 17 SkPictureContentLayerUpdater::SkPictureContentLayerUpdater( 18 scoped_ptr<LayerPainter> painter, 19 RenderingStatsInstrumentation* stats_instrumentation, 20 int layer_id) 21 : ContentLayerUpdater(painter.Pass(), stats_instrumentation, layer_id) {} 22 23 SkPictureContentLayerUpdater::~SkPictureContentLayerUpdater() {} 24 25 void SkPictureContentLayerUpdater::PrepareToUpdate( 26 const gfx::Rect& content_rect, 27 const gfx::Size&, 28 float contents_width_scale, 29 float contents_height_scale, 30 gfx::Rect* resulting_opaque_rect) { 31 SkPictureRecorder recorder; 32 SkCanvas* canvas = recorder.beginRecording( 33 content_rect.width(), content_rect.height(), NULL, 0); 34 DCHECK_EQ(content_rect.width(), canvas->getBaseLayerSize().width()); 35 DCHECK_EQ(content_rect.height(), canvas->getBaseLayerSize().height()); 36 base::TimeTicks start_time = 37 rendering_stats_instrumentation_->StartRecording(); 38 PaintContents(canvas, 39 content_rect, 40 contents_width_scale, 41 contents_height_scale, 42 resulting_opaque_rect); 43 base::TimeDelta duration = 44 rendering_stats_instrumentation_->EndRecording(start_time); 45 rendering_stats_instrumentation_->AddRecord( 46 duration, content_rect.width() * content_rect.height()); 47 picture_ = skia::AdoptRef(recorder.endRecording()); 48 } 49 50 void SkPictureContentLayerUpdater::DrawPicture(SkCanvas* canvas) { 51 TRACE_EVENT0("cc", "SkPictureContentLayerUpdater::DrawPicture"); 52 if (picture_) 53 canvas->drawPicture(picture_.get()); 54 } 55 56 } // namespace cc 57
