1 /*
2  * Copyright (C) 2010 Alex Milowski (alex@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);
hasBase()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