/* * Copyright (C) 2012 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. * 2. Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef Shape_h #define Shape_h #include "BasicShapes.h" #include "LayoutRect.h" #include "WritingMode.h" #include <wtf/PassOwnPtr.h> #include <wtf/Vector.h> namespace WebCore { struct LineSegment { LineSegment(float logicalLeft, float logicalRight) : logicalLeft(logicalLeft) , logicalRight(logicalRight) { } LayoutUnit logicalLeft; LayoutUnit logicalRight; }; typedef Vector<LineSegment> SegmentList; // A representation of a BasicShape that enables layout code to determine how to break a line up into segments // that will fit within or around a shape. The line is defined by a pair of logical Y coordinates and the // computed segments are returned as pairs of logical X coordinates. The BasicShape itself is defined in // physical coordinates. class Shape { public: static PassOwnPtr<Shape> createShape(const BasicShape*, const LayoutSize& logicalBoxSize, WritingMode, Length margin, Length padding); virtual ~Shape() { } virtual LayoutRect shapeMarginLogicalBoundingBox() const = 0; virtual LayoutRect shapePaddingLogicalBoundingBox() const = 0; virtual bool isEmpty() const = 0; virtual void getIncludedIntervals(LayoutUnit logicalTop, LayoutUnit logicalHeight, SegmentList&) const = 0; virtual void getExcludedIntervals(LayoutUnit logicalTop, LayoutUnit logicalHeight, SegmentList&) const = 0; virtual bool firstIncludedIntervalLogicalTop(LayoutUnit minLogicalIntervalTop, const LayoutSize& minLogicalIntervalSize, LayoutUnit& result) const = 0; protected: float shapeMargin() const { return m_margin; } float shapePadding() const { return m_padding; } private: WritingMode m_writingMode; float m_margin; float m_padding; }; } // namespace WebCore #endif // Shape_h