Organize internal properties of cc/ layer types

cc/layer_impl.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_LAYER_IMPL_H_
 #define CC_LAYER_IMPL_H_
 
 #include <public/WebFilterOperations.h>
 #include <string>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "cc/cc_export.h"
+#include "cc/draw_properties.h"
 #include "cc/input_handler.h"
 #include "cc/layer_animation_controller.h"
 #include "cc/region.h"
 #include "cc/render_pass.h"
 #include "cc/render_surface_impl.h"
 #include "cc/resource_provider.h"
 #include "cc/scoped_ptr_vector.h"
 #include "cc/shared_quad_state.h"
 #include "skia/ext/refptr.h"
 #include "third_party/skia/include/core/SkColor.h"
@@ skipping 129 matching lines @@
 
     void setSublayerTransform(const gfx::Transform&);
     const gfx::Transform& sublayerTransform() const { return m_sublayerTransform; }
 
     // Debug layer name.
     void setDebugName(const std::string& debugName) { m_debugName = debugName; }
     std::string debugName() const { return m_debugName; }
 
     bool showDebugBorders() const;
 
-    RenderSurfaceImpl* renderSurface() const { return m_renderSurface.get(); }
     void createRenderSurface();
-    void clearRenderSurface() { m_renderSurface.reset(); }
+    void clearRenderSurface() { m_drawProperties.render_surface.reset(); }
 
-    float drawOpacity() const { return m_drawOpacity; }
-    void setDrawOpacity(float opacity) { m_drawOpacity = opacity; }
+    DrawProperties<LayerImpl, RenderSurfaceImpl>& drawProperties() { return m_drawProperties; }
+    const DrawProperties<LayerImpl, RenderSurfaceImpl>& drawProperties() const { return m_drawProperties; }
 
-    bool drawOpacityIsAnimating() const { return m_drawOpacityIsAnimating; }
-    void setDrawOpacityIsAnimating(bool drawOpacityIsAnimating) { m_drawOpacityIsAnimating = drawOpacityIsAnimating; }
-
-    void setRenderTarget(LayerImpl* target) { m_renderTarget = target; }
-    LayerImpl* renderTarget() { DCHECK(!m_renderTarget || m_renderTarget->renderSurface()); return m_renderTarget; }
-    const LayerImpl* renderTarget() const { DCHECK(!m_renderTarget || m_renderTarget->renderSurface()); return m_renderTarget; }
+    // The following are shortcut accessors to get various information from m_drawProperties
+    const gfx::Transform& drawTransform() const { return m_drawProperties.target_space_transform; }
+    const gfx::Transform& screenSpaceTransform() const { return m_drawProperties.screen_space_transform; }
+    float drawOpacity() const { return m_drawProperties.opacity; }
+    bool drawOpacityIsAnimating() const { return m_drawProperties.opacity_is_animating; }
+    bool drawTransformIsAnimating() const { return m_drawProperties.target_space_transform_is_animating; }
+    bool screenSpaceTransformIsAnimating() const { return m_drawProperties.screen_space_transform_is_animating; }
+    bool isClipped() const { return m_drawProperties.is_clipped; }
+    const gfx::Rect& clipRect() const { return m_drawProperties.clip_rect; }
+    const gfx::Rect& drawableContentRect() const { return m_drawProperties.drawable_content_rect; }
+    const gfx::Rect& visibleContentRect() const { return m_drawProperties.visible_content_rect; }
+    LayerImpl* renderTarget() { DCHECK(!m_drawProperties.render_target || m_drawProperties.render_target->renderSurface()); return m_drawProperties.render_target; }
+    const LayerImpl* renderTarget() const { DCHECK(!m_drawProperties.render_target || m_drawProperties.render_target->renderSurface()); return m_drawProperties.render_target; }
+    RenderSurfaceImpl* renderSurface() const { return m_drawProperties.render_surface.get(); }
 
     // The client should be responsible for setting bounds, contentBounds and
     // contentsScale to appropriate values. LayerImpl doesn't calculate any of
     // them from the other values.
 
     void setBounds(const gfx::Size&);
     const gfx::Size& bounds() const { return m_bounds; }
 
     // ContentBounds may be [0, 1) pixels larger than bounds * contentsScale.
     // Don't calculate scale from it. Use contentsScale instead for accuracy.
@@ skipping 35 matching lines @@
     void setNonFastScrollableRegion(const Region& region) { m_nonFastScrollableRegion = region; }
 
     const Region& touchEventHandlerRegion() const { return m_touchEventHandlerRegion; }
     void setTouchEventHandlerRegion(const Region& region) { m_touchEventHandlerRegion = region; }
 
     void setDrawCheckerboardForMissingTiles(bool checkerboard) { m_drawCheckerboardForMissingTiles = checkerboard; }
     bool drawCheckerboardForMissingTiles() const;
 
     InputHandlerClient::ScrollStatus tryScroll(const gfx::PointF& screenSpacePoint, InputHandlerClient::ScrollInputType) const;
 
-    const gfx::Rect& visibleContentRect() const { return m_visibleContentRect; }
-    void setVisibleContentRect(const gfx::Rect& visibleContentRect) { m_visibleContentRect = visibleContentRect; }
-
     bool doubleSided() const { return m_doubleSided; }
     void setDoubleSided(bool);
 
     void setTransform(const gfx::Transform&);
     bool transformIsAnimating() const;
 
-    const gfx::Transform& drawTransform() const { return m_drawTransform; }
-    void setDrawTransform(const gfx::Transform& matrix) { m_drawTransform = matrix; }
-    const gfx::Transform& screenSpaceTransform() const { return m_screenSpaceTransform; }
-    void setScreenSpaceTransform(const gfx::Transform& matrix) { m_screenSpaceTransform = matrix; }
-
-    bool drawTransformIsAnimating() const { return m_drawTransformIsAnimating; }
-    void setDrawTransformIsAnimating(bool animating) { m_drawTransformIsAnimating = animating; }
-    bool screenSpaceTransformIsAnimating() const { return m_screenSpaceTransformIsAnimating; }
-    void setScreenSpaceTransformIsAnimating(bool animating) { m_screenSpaceTransformIsAnimating = animating; }
-
-    bool isClipped() const { return m_isClipped; }
-    void setIsClipped(bool isClipped) { m_isClipped = isClipped; }
-
-    const gfx::Rect& clipRect() const { return m_clipRect; }
-    void setClipRect(const gfx::Rect& clipRect) { m_clipRect = clipRect; }
-
-    const gfx::Rect& drawableContentRect() const { return m_drawableContentRect; }
-    void setDrawableContentRect(const gfx::Rect& rect) { m_drawableContentRect = rect; }
-
     const gfx::RectF& updateRect() const { return m_updateRect; }
     void setUpdateRect(const gfx::RectF& updateRect) { m_updateRect = updateRect; }
 
     std::string layerTreeAsText() const;
 
     void setStackingOrderChanged(bool);
 
     bool layerPropertyChanged() const { return m_layerPropertyChanged || layerIsAlwaysDamaged(); }
     bool layerSurfacePropertyChanged() const;
 
@@ skipping 80 matching lines @@
 
     // Tracks if drawing-related properties have changed since last redraw.
     bool m_layerPropertyChanged;
 
     // Indicates that a property has changed on this layer that would not
     // affect the pixels on its target surface, but would require redrawing
     // but would require redrawing the targetSurface onto its ancestor targetSurface.
     // For layers that do not own a surface this flag acts as m_layerPropertyChanged.
     bool m_layerSurfacePropertyChanged;
 
-    // Uses layer's content space.
-    gfx::Rect m_visibleContentRect;
     bool m_masksToBounds;
     bool m_contentsOpaque;
     float m_opacity;
     gfx::PointF m_position;
     bool m_preserves3D;
     bool m_useParentBackfaceVisibility;
     bool m_drawCheckerboardForMissingTiles;
     gfx::Transform m_sublayerTransform;
     gfx::Transform m_transform;
     bool m_useLCDText;
 
     bool m_drawsContent;
     bool m_forceRenderSurface;
 
     // Set for the layer that other layers are fixed to.
     bool m_isContainerForFixedPositionLayers;
     // This is true if the layer should be fixed to the closest ancestor container.
     bool m_fixedToContainerLayer;
 
     gfx::Vector2dF m_scrollDelta;
     gfx::Vector2d m_sentScrollDelta;
     gfx::Vector2d m_maxScrollOffset;
     gfx::Transform m_implTransform;
 
-    // The layer whose coordinate space this layer draws into. This can be
-    // either the same layer (m_renderTarget == this) or an ancestor of this
-    // layer.
-    LayerImpl* m_renderTarget;
-
     // The global depth value of the center of the layer. This value is used
     // to sort layers from back to front.
     float m_drawDepth;
-    float m_drawOpacity;
-    bool m_drawOpacityIsAnimating;
 
     // Debug layer name.
     std::string m_debugName;
 
     WebKit::WebFilterOperations m_filters;
     WebKit::WebFilterOperations m_backgroundFilters;
     skia::RefPtr<SkImageFilter> m_filter;
 
-    gfx::Transform m_drawTransform;
-    gfx::Transform m_screenSpaceTransform;
-    bool m_drawTransformIsAnimating;
-    bool m_screenSpaceTransformIsAnimating;
-
 #ifndef NDEBUG
     bool m_betweenWillDrawAndDidDraw;
 #endif
 
-    // Render surface associated with this layer. The layer and its descendants
-    // will render to this surface.
-    scoped_ptr<RenderSurfaceImpl> m_renderSurface;
-
-    // Uses target surface's space.
-    gfx::Rect m_drawableContentRect;
-    gfx::Rect m_clipRect;
-
-    // True if the layer is clipped by m_clipRect.
-    bool m_isClipped;
-
     // Rect indicating what was repainted/updated during update.
     // Note that plugin layers bypass this and leave it empty.
     // Uses layer's content space.
     gfx::RectF m_updateRect;
 
     // Manages animations for this layer.
     scoped_ptr<LayerAnimationController> m_layerAnimationController;
 
     // Manages scrollbars for this layer
     scoped_ptr<ScrollbarAnimationController> m_scrollbarAnimationController;
 
+    // Group of properties that need to be computed based on the layer tree
+    // hierarchy before layers can be drawn.
+    DrawProperties<LayerImpl, RenderSurfaceImpl> m_drawProperties;
+
     DISALLOW_COPY_AND_ASSIGN(LayerImpl);
 };
 
 void sortLayers(std::vector<LayerImpl*>::iterator first, std::vector<LayerImpl*>::iterator end, LayerSorter*);
 
 }
 
 #endif  // CC_LAYER_IMPL_H_