Implements core logic for Pixel Canvas

cc/layers/recording_source.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/layers/recording_source.h"
 
 #include <stdint.h>
 
 #include <algorithm>
 
@@ skipping 20 matching lines @@
 }  // namespace
 
 namespace cc {
 
 RecordingSource::RecordingSource()
     : slow_down_raster_scale_factor_for_debug_(0),
       requires_clear_(false),
       is_solid_color_(false),
       clear_canvas_with_debug_color_(kDefaultClearCanvasSetting),
       solid_color_(SK_ColorTRANSPARENT),
-      background_color_(SK_ColorTRANSPARENT) {}
+      background_color_(SK_ColorTRANSPARENT),
+      recording_scale_factor_(1.f) {}
 
 RecordingSource::~RecordingSource() {}
 
 void RecordingSource::UpdateInvalidationForNewViewport(
     const gfx::Rect& old_recorded_viewport,
     const gfx::Rect& new_recorded_viewport,
     Region* invalidation) {
   // Invalidate newly-exposed and no-longer-exposed areas.
   Region newly_exposed_region(new_recorded_viewport);
   newly_exposed_region.Subtract(old_recorded_viewport);
@@ skipping 81 matching lines @@
 }
 
 const DisplayItemList* RecordingSource::GetDisplayItemList() {
   return display_list_.get();
 }
 
 scoped_refptr<RasterSource> RecordingSource::CreateRasterSource() const {
   return scoped_refptr<RasterSource>(new RasterSource(this));
 }
 
+void RecordingSource::SetRecordingScaleFactor(float recording_scale_factor) {
+  recording_scale_factor_ = recording_scale_factor;
+}
+
 void RecordingSource::DetermineIfSolidColor() {
   DCHECK(display_list_);
   is_solid_color_ = false;
   solid_color_ = SK_ColorTRANSPARENT;
 
   if (display_list_->op_count() > kMaxOpsToAnalyzeForLayer)
     return;
 
   TRACE_EVENT1("cc", "RecordingSource::DetermineIfSolidColor", "opcount",
                display_list_->op_count());
   is_solid_color_ = display_list_->GetColorIfSolidInRect(
       gfx::Rect(GetSize()), &solid_color_, kMaxOpsToAnalyzeForLayer);
 }
 
 }  // namespace cc