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#ifndef RenderMathMLBlock_h
27#define RenderMathMLBlock_h
28
29#if ENABLE(MATHML)
30
31#include "RenderBlock.h"
32
33#define ENABLE_DEBUG_MATH_LAYOUT 0
34
35namespace WebCore {
36
37class RenderMathMLBlock : public RenderBlock {
38public:
39    RenderMathMLBlock(Node* container);
40    virtual bool isChildAllowed(RenderObject*, RenderStyle*) const;
41
42    virtual bool isRenderMathMLBlock() const { return true; }
43    virtual bool isRenderMathMLOperator() const { return false; }
44    virtual bool isRenderMathMLRow() const { return false; }
45    virtual bool isRenderMathMLMath() const { return false; }
46    virtual bool hasBase() const { return false; }
47    virtual int nonOperatorHeight() const;
48    virtual void stretchToHeight(int height);
49
50#if ENABLE(DEBUG_MATH_LAYOUT)
51    virtual void paint(PaintInfo&, int tx, int ty);
52#endif
53
54protected:
55    int getBoxModelObjectHeight(RenderObject* object)
56    {
57        if (object && object->isBoxModelObject()) {
58            RenderBoxModelObject* box = toRenderBoxModelObject(object);
59            return box->offsetHeight();
60        }
61
62        return 0;
63    }
64    int getBoxModelObjectHeight(const RenderObject* object)
65    {
66        if (object && object->isBoxModelObject()) {
67            const RenderBoxModelObject* box = toRenderBoxModelObject(object);
68            return box->offsetHeight();
69        }
70
71        return 0;
72    }
73    int getBoxModelObjectWidth(RenderObject* object)
74    {
75        if (object && object->isBoxModelObject()) {
76            RenderBoxModelObject* box = toRenderBoxModelObject(object);
77            return box->offsetWidth();
78        }
79
80        return 0;
81    }
82    int getBoxModelObjectWidth(const RenderObject* object)
83    {
84        if (object && object->isBoxModelObject()) {
85            const RenderBoxModelObject* box = toRenderBoxModelObject(object);
86            return box->offsetWidth();
87        }
88
89        return 0;
90    }
91    virtual PassRefPtr<RenderStyle> makeBlockStyle();
92
93};
94
95inline RenderMathMLBlock* toRenderMathMLBlock(RenderObject* object)
96{
97    ASSERT(!object || object->isRenderMathMLBlock());
98    return static_cast<RenderMathMLBlock*>(object);
99}
100
101inline const RenderMathMLBlock* toRenderMathMLBlock(const RenderObject* object)
102{
103    ASSERT(!object || object->isRenderMathMLBlock());
104    return static_cast<const RenderMathMLBlock*>(object);
105}
106
107}
108
109
110#endif // ENABLE(MATHML)
111#endif // RenderMathMLBlock_h
112