[CSS Shapes] Simplify RasterShape implementation

Source/core/rendering/shapes/RasterShape.h

 /*
  * Copyright (C) 2013 Adobe Systems Incorporated. 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.
@@ skipping 25 matching lines @@
 #include "wtf/Assertions.h"
 #include "wtf/Vector.h"
 
 namespace WebCore {
 
 class RasterShapeIntervals {
 public:
     RasterShapeIntervals(unsigned size, int offset = 0)
         : m_offset(offset)
     {
-        m_intervalLists.resize(size);
+        m_intervals.resize(size);
     }
 
+    void initializeBounds();
     const IntRect& bounds() const { return m_bounds; }
     bool isEmpty() const { return m_bounds.isEmpty(); }
-    void appendInterval(int y, int x1, int x2);
 
-    void getExcludedIntervals(int y1, int y2, IntShapeIntervals& result) const;
+    IntShapeInterval& intervalAt(int y)
+    {
+        ASSERT(y + m_offset >= 0 && static_cast<unsigned>(y + m_offset) < m_intervals.size());
+        return m_intervals[y + m_offset];
+    }
+
+    const IntShapeInterval& intervalAt(int y) const
+    {
+        ASSERT(y + m_offset >= 0 && static_cast<unsigned>(y + m_offset) < m_intervals.size());
+        return m_intervals[y + m_offset];
+    }
 
     PassOwnPtr<RasterShapeIntervals> computeShapeMarginIntervals(int shapeMargin) const;
 
     void buildBoundsPath(Path&) const;
 
 private:
-    int size() const { return m_intervalLists.size(); }
+    int size() const { return m_intervals.size(); }
     int offset() const { return m_offset; }
     int minY() const { return -m_offset; }
-    int maxY() const { return -m_offset + m_intervalLists.size(); }
+    int maxY() const { return -m_offset + m_intervals.size(); }
 
-    IntShapeIntervals& intervalsAt(int y)
-    {
-        ASSERT(y + m_offset >= 0 && static_cast<unsigned>(y + m_offset) < m_intervalLists.size());
-        return m_intervalLists[y + m_offset];
-    }
-
-    const IntShapeIntervals& intervalsAt(int y) const
-    {
-        ASSERT(y + m_offset >= 0 && static_cast<unsigned>(y + m_offset) < m_intervalLists.size());
-        return m_intervalLists[y + m_offset];
-    }
-
-    IntShapeInterval limitIntervalAt(int y) const
-    {
-        const IntShapeIntervals& intervals = intervalsAt(y);
-        return intervals.size() ? IntShapeInterval(intervals[0].x1(), intervals.last().x2()) : IntShapeInterval();
-    }
-
-    bool contains(const IntRect&) const;
-    bool getIntervalX1Values(int minY, int maxY, int minIntervalWidth, Vector<int>& result) const;
-    void uniteMarginInterval(int y, const IntShapeInterval&);
     IntRect m_bounds;
-    Vector<IntShapeIntervals> m_intervalLists;
+    Vector<IntShapeInterval> m_intervals;
     int m_offset;
 };
 
 class RasterShape FINAL : public Shape {
     WTF_MAKE_NONCOPYABLE(RasterShape);
 public:
     RasterShape(PassOwnPtr<RasterShapeIntervals> intervals, const IntSize& marginRectSize)
         : m_intervals(intervals)
         , m_marginRectSize(marginRectSize)
     {
+        m_intervals->initializeBounds();
     }
 
     virtual LayoutRect shapeMarginLogicalBoundingBox() const OVERRIDE { return static_cast<LayoutRect>(marginIntervals().bounds()); }
     virtual bool isEmpty() const OVERRIDE { return m_intervals->isEmpty(); }
     virtual void getExcludedIntervals(LayoutUnit logicalTop, LayoutUnit logicalHeight, SegmentList&) const OVERRIDE;
 
 private:
     const RasterShapeIntervals& marginIntervals() const;
 
     OwnPtr<RasterShapeIntervals> m_intervals;
     mutable OwnPtr<RasterShapeIntervals> m_marginIntervals;
     IntSize m_marginRectSize;
 };
 
 } // namespace WebCore
 
 #endif // RasterShape_h