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33 #include "core/rendering/style/BasicShapes.h"
34 #include "core/rendering/style/StyleImage.h"
35 #include "platform/geometry/LayoutRect.h"
36 #include "platform/geometry/RoundedRect.h"
37 #include "platform/graphics/Path.h"
38 #include "platform/text/WritingMode.h"
39 #include "wtf/PassOwnPtr.h"
40 #include "wtf/Vector.h"
45 LineSegment(float logicalLeft, float logicalRight)
46 : logicalLeft(logicalLeft)
47 , logicalRight(logicalRight)
55 typedef Vector<LineSegment> SegmentList;
58 // A representation of a BasicShape that enables layout code to determine how to break a line up into segments
59 // that will fit within or around a shape. The line is defined by a pair of logical Y coordinates and the
60 // computed segments are returned as pairs of logical X coordinates. The BasicShape itself is defined in
61 // physical coordinates.
69 static PassOwnPtr<Shape> createShape(const BasicShape*, const LayoutSize& logicalBoxSize, WritingMode, float margin);
70 static PassOwnPtr<Shape> createRasterShape(Image*, float threshold, const LayoutRect& imageRect, const LayoutRect& marginRect, WritingMode, float margin);
71 static PassOwnPtr<Shape> createLayoutBoxShape(const RoundedRect&, WritingMode, float margin);
75 virtual LayoutRect shapeMarginLogicalBoundingBox() const = 0;
76 virtual bool isEmpty() const = 0;
77 virtual void getExcludedIntervals(LayoutUnit logicalTop, LayoutUnit logicalHeight, SegmentList&) const = 0;
79 bool lineOverlapsShapeMarginBounds(LayoutUnit lineTop, LayoutUnit lineHeight) const { return lineOverlapsBoundingBox(lineTop, lineHeight, shapeMarginLogicalBoundingBox()); }
80 virtual void buildDisplayPaths(DisplayPaths&) const = 0;
83 float shapeMargin() const { return m_margin; }
86 bool lineOverlapsBoundingBox(LayoutUnit lineTop, LayoutUnit lineHeight, const LayoutRect& rect) const
90 return (lineTop < rect.maxY() && lineTop + lineHeight > rect.y()) || (!lineHeight && lineTop == rect.y());
93 WritingMode m_writingMode;
97 } // namespace WebCore