[Night Light] Backend ui::Layer work

ui/compositor/layer.h

 // Copyright (c) 2012 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 UI_COMPOSITOR_LAYER_H_
 #define UI_COMPOSITOR_LAYER_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 168 matching lines @@
 
   // The opacity of the layer. The opacity is applied to each pixel of the
   // texture (resulting alpha = opacity * alpha).
   float opacity() const;
   void SetOpacity(float opacity);
 
   // Returns the actual opacity, which the opacity of this layer multipled by
   // the combined opacity of the parent.
   float GetCombinedOpacity() const;
 
+  // The layer temperature value between 0.0f and 1.0f, where a value of 0.0f
+  // is least warm (which is the default), and a value of 1.0f is most warm.
+  float layer_temperature() const { return layer_temperature_; }
+  void SetLayerTemperature(float value);
+
   // Blur pixels by this amount in anything below the layer and visible through
   // the layer.
   int background_blur() const { return background_blur_radius_; }
   void SetBackgroundBlur(int blur_radius);
 
   // Saturate all pixels of this layer by this amount.
   // This effect will get "combined" with the inverted,
   // brightness and grayscale setting.
   float layer_saturation() const { return layer_saturation_; }
   void SetLayerSaturation(float saturation);
@@ skipping 215 matching lines @@
   bool ConvertPointFromAncestor(const Layer* ancestor, gfx::Point* point) const;
 
   // Implementation of LayerAnimatorDelegate
   void SetBoundsFromAnimation(const gfx::Rect& bounds) override;
   void SetTransformFromAnimation(const gfx::Transform& transform) override;
   void SetOpacityFromAnimation(float opacity) override;
   void SetVisibilityFromAnimation(bool visibility) override;
   void SetBrightnessFromAnimation(float brightness) override;
   void SetGrayscaleFromAnimation(float grayscale) override;
   void SetColorFromAnimation(SkColor color) override;
+  void SetTemperatureFromAnimation(float temperature) override;
   void ScheduleDrawForAnimation() override;
   const gfx::Rect& GetBoundsForAnimation() const override;
   gfx::Transform GetTransformForAnimation() const override;
   float GetOpacityForAnimation() const override;
   bool GetVisibilityForAnimation() const override;
   float GetBrightnessForAnimation() const override;
   float GetGrayscaleForAnimation() const override;
   SkColor GetColorForAnimation() const override;
+  float GetTemperatureFromAnimation() const override;
   float GetDeviceScaleFactor() const override;
   cc::Layer* GetCcLayer() const override;
   LayerThreadedAnimationDelegate* GetThreadedAnimationDelegate() override;
   LayerAnimatorCollection* GetLayerAnimatorCollection() override;
   int GetFrameNumber() const override;
   float GetRefreshRate() const override;
 
   // Creates a corresponding composited layer for |type_|.
   void CreateCcLayer();
 
@@ skipping 50 matching lines @@
 
   int background_blur_radius_;
 
   // Several variables which will change the visible representation of
   // the layer.
   float layer_saturation_;
   float layer_brightness_;
   float layer_grayscale_;
   bool layer_inverted_;
 
+  // The global color temperature value (0.0f ~ 1.0f). Used to calculate the
+  // layer blue and green colors scales. 0.0f is least warm (default), and 1.0f
+  // is most warm.
+  float layer_temperature_;
+  // The calculated layer blue and green color scales (0.0f ~ 1.0f).
+  float layer_blue_scale_;
+  float layer_green_scale_;
+
   // The associated mask layer with this layer.
   Layer* layer_mask_;
   // The back link from the mask layer to it's associated masked layer.
   // We keep this reference for the case that if the mask layer gets deleted
   // while attached to the main layer before the main layer is deleted.
   Layer* layer_mask_back_link_;
 
   // The zoom factor to scale the layer by.  Zooming is disabled when this is
   // set to 1.
   float zoom_;
@@ skipping 41 matching lines @@
   // The size of the frame or texture in DIP, set when SetShowDelegatedContent
   // or SetTextureMailbox was called.
   gfx::Size frame_size_in_dip_;
 
   DISALLOW_COPY_AND_ASSIGN(Layer);
 };
 
 }  // namespace ui
 
 #endif  // UI_COMPOSITOR_LAYER_H_