1/*
2 * Copyright (c) 2012, Google Inc. 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 are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifndef LayoutBoxExtent_h
32#define LayoutBoxExtent_h
33
34#include "LayoutUnit.h"
35#include "TextDirection.h"
36#include "WritingMode.h"
37
38namespace WebCore {
39
40class LayoutBoxExtent {
41public:
42    LayoutBoxExtent() : m_top(0), m_right(0), m_bottom(0), m_left(0) { }
43    LayoutBoxExtent(LayoutUnit top, LayoutUnit right, LayoutUnit bottom, LayoutUnit left)
44        : m_top(top), m_right(right), m_bottom(bottom), m_left(left) { }
45
46    inline LayoutUnit top() const { return m_top; }
47    inline LayoutUnit right() const { return m_right; }
48    inline LayoutUnit bottom() const { return m_bottom; }
49    inline LayoutUnit left() const { return m_left; }
50
51    inline void setTop(LayoutUnit value) { m_top = value; }
52    inline void setRight(LayoutUnit value) { m_right = value; }
53    inline void setBottom(LayoutUnit value) { m_bottom = value; }
54    inline void setLeft(LayoutUnit value) { m_left = value; }
55
56    LayoutUnit logicalTop(WritingMode) const;
57    LayoutUnit logicalBottom(WritingMode) const;
58    LayoutUnit logicalLeft(WritingMode) const;
59    LayoutUnit logicalRight(WritingMode) const;
60
61    LayoutUnit before(WritingMode) const;
62    LayoutUnit after(WritingMode) const;
63    LayoutUnit start(WritingMode, TextDirection) const;
64    LayoutUnit end(WritingMode, TextDirection) const;
65
66    void setBefore(WritingMode, LayoutUnit);
67    void setAfter(WritingMode, LayoutUnit);
68    void setStart(WritingMode, TextDirection, LayoutUnit);
69    void setEnd(WritingMode, TextDirection, LayoutUnit);
70
71    LayoutUnit& mutableLogicalLeft(WritingMode);
72    LayoutUnit& mutableLogicalRight(WritingMode);
73
74    LayoutUnit& mutableBefore(WritingMode);
75    LayoutUnit& mutableAfter(WritingMode);
76
77private:
78    LayoutUnit m_top;
79    LayoutUnit m_right;
80    LayoutUnit m_bottom;
81    LayoutUnit m_left;
82};
83
84} // namespace WebCore
85
86#endif // LayoutBoxExtent_h
87