First Implementation of Snapped Points

third_party/WebKit/Source/platform/graphics/GraphicsLayer.h

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Intel Corporation. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 32 matching lines @@
 #include "platform/graphics/ImageOrientation.h"
 #include "platform/graphics/PaintInvalidationReason.h"
 #include "platform/graphics/paint/DisplayItemClient.h"
 #include "platform/graphics/paint/PaintController.h"
 #include "platform/heap/Handle.h"
 #include "platform/transforms/TransformationMatrix.h"
 #include "platform/wtf/Vector.h"
 #include "public/platform/WebContentLayer.h"
 #include "public/platform/WebImageLayer.h"
 #include "public/platform/WebLayerStickyPositionConstraint.h"
+#include "public/platform/WebSnapPointList.h"
 #include "third_party/skia/include/core/SkFilterQuality.h"
 #include "third_party/skia/include/core/SkRefCnt.h"
 
 namespace blink {
 
 class CompositorFilterOperations;
 class Image;
 class JSONObject;
 class LinkHighlight;
 class PaintController;
@@ skipping 207 matching lines @@
   ContentLayerDelegate* ContentLayerDelegateForTesting() const {
     return content_layer_delegate_.get();
   }
 
   // DisplayItemClient methods
   String DebugName() const final { return client_->DebugName(this); }
   LayoutRect VisualRect() const override;
 
   void SetHasWillChangeTransformHint(bool);
 
+  void SetSnapOffsets(const WebSnapPointList&);
+
  protected:
   String DebugName(cc::Layer*) const;
   bool ShouldFlattenTransform() const { return should_flatten_transform_; }
 
   explicit GraphicsLayer(GraphicsLayerClient*);
   // for testing
   friend class CompositedLayerMappingTest;
   friend class PaintControllerPaintTestBase;
 
  private:
@@ skipping 86 matching lines @@
   WebLayer* contents_layer_;
   // We don't have ownership of m_contentsLayer, but we do want to know if a
   // given layer is the same as our current layer in setContentsTo(). Since
   // |m_contentsLayer| may be deleted at this point, we stash an ID away when we
   // know |m_contentsLayer| is alive and use that for comparisons from that
   // point on.
   int contents_layer_id_;
 
   Vector<LinkHighlight*> link_highlights_;
 
+  Vector<double> m_snapOffsetsH;
+  Vector<double> m_snapOffsetsV;
+
   std::unique_ptr<ContentLayerDelegate> content_layer_delegate_;
 
   WeakPersistent<ScrollableArea> scrollable_area_;
   GraphicsLayerDebugInfo debug_info_;
   int rendering_context3d_;
 
   std::unique_ptr<PaintController> paint_controller_;
 
   IntRect previous_interest_rect_;
 };
 
 }  // namespace blink
 
 #ifndef NDEBUG
 // Outside the blink namespace for ease of invocation from gdb.
 void PLATFORM_EXPORT showGraphicsLayerTree(const blink::GraphicsLayer*);
 void PLATFORM_EXPORT showGraphicsLayers(const blink::GraphicsLayer*);
 #endif
 
 #endif  // GraphicsLayer_h