Implements core logic for Pixel Canvas

cc/trees/layer_tree_host.h

 // Copyright 2011 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.
 
 #ifndef CC_TREES_LAYER_TREE_HOST_H_
 #define CC_TREES_LAYER_TREE_HOST_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 301 matching lines @@
 
   void StartPageScaleAnimation(const gfx::Vector2d& target_offset,
                                bool use_anchor,
                                float scale,
                                base::TimeDelta duration);
   bool HasPendingPageScaleAnimation() const;
 
   void SetDeviceScaleFactor(float device_scale_factor);
   float device_scale_factor() const { return device_scale_factor_; }
 
+  void SetRecordingScaleFactor(float recording_scale_factor);
+
   void SetPaintedDeviceScaleFactor(float painted_device_scale_factor);
   float painted_device_scale_factor() const {
     return painted_device_scale_factor_;
   }
 
   void SetContentSourceId(uint32_t);
   uint32_t content_source_id() const { return content_source_id_; }
 
   // If this LayerTreeHost needs a valid viz::LocalSurfaceId then commits will
   // be deferred until a valid viz::LocalSurfaceId is provided.
@@ skipping 156 matching lines @@
 
   void ScrollOffsetAnimationFinished() override {}
   gfx::ScrollOffset GetScrollOffsetForAnimation(
       ElementId element_id) const override;
 
   void QueueImageDecode(const PaintImage& image,
                         const base::Callback<void(bool)>& callback);
 
   void RequestBeginMainFrameNotExpected(bool new_state);
 
+  float recording_scale_factor() const { return recording_scale_factor_; }
+
  protected:
   LayerTreeHost(InitParams* params, CompositorMode mode);
 
   void InitializeThreaded(
       scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
       scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner);
   void InitializeSingleThreaded(
       LayerTreeHostSingleThreadClient* single_thread_client,
       scoped_refptr<base::SingleThreadTaskRunner> main_task_runner);
   void InitializeForTesting(
@@ skipping 87 matching lines @@
   ViewportLayers viewport_layers_;
 
   float top_controls_height_ = 0.f;
   float top_controls_shown_ratio_ = 0.f;
   bool browser_controls_shrink_blink_size_ = false;
 
   float bottom_controls_height_ = 0.f;
 
   float device_scale_factor_ = 1.f;
   float painted_device_scale_factor_ = 1.f;
+  float recording_scale_factor_ = 1.f;
   float page_scale_factor_ = 1.f;
   float min_page_scale_factor_ = 1.f;
   float max_page_scale_factor_ = 1.f;
   gfx::ColorSpace raster_color_space_;
 
   uint32_t content_source_id_;
   viz::LocalSurfaceId local_surface_id_;
   bool defer_commits_ = false;
 
   SkColor background_color_ = SK_ColorWHITE;
@@ skipping 42 matching lines @@
 
   std::vector<std::pair<PaintImage, base::Callback<void(bool)>>>
       queued_image_decodes_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHost);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_H_