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      1 /*
      2  * Copyright (C) 2010 Alex Milowski (alex (at) milowski.com). All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     14  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     15  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     16  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     17  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     18  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     19  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 
     27 #ifndef RenderMathMLSubSup_h
     28 #define RenderMathMLSubSup_h
     29 
     30 #if ENABLE(MATHML)
     31 
     32 #include "RenderMathMLBlock.h"
     33 #include "RenderTable.h"
     34 
     35 namespace WebCore {
     36 
     37 class RenderMathMLSubSup : public RenderMathMLBlock {
     38 public:
     39     RenderMathMLSubSup(Element* fraction);
     40     virtual void addChild(RenderObject* child, RenderObject* beforeChild = 0);
     41     virtual bool hasBase() const { return true; }
     42     virtual int nonOperatorHeight() const;
     43     virtual void stretchToHeight(int pixelHeight);
     44     virtual int baselinePosition(FontBaseline, bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const;
     45 
     46 protected:
     47     virtual void layout();
     48 
     49 private:
     50     enum SubSupType { Sub, Sup, SubSup };
     51     SubSupType m_kind;
     52     RenderBlock* m_scripts;
     53 };
     54 
     55 }
     56 
     57 #endif // ENABLE(MATHML)
     58 
     59 #endif // RenderMathMLSubSup_h
     60 
     61