1/*
2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
3 *           (C) 2000 Antti Koivisto (koivisto@kde.org)
4 *           (C) 2000 Dirk Mueller (mueller@kde.org)
5 * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
6 * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16 * Library General Public License for more details.
17 *
18 * You should have received a copy of the GNU Library General Public License
19 * along with this library; see the file COPYING.LIB.  If not, write to
20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 * Boston, MA 02110-1301, USA.
22 *
23 */
24
25#ifndef BorderValue_h
26#define BorderValue_h
27
28#include "Color.h"
29#include "RenderStyleConstants.h"
30
31namespace WebCore {
32
33class BorderValue {
34friend class RenderStyle;
35public:
36    BorderValue()
37        : m_width(3)
38        , m_style(BNONE)
39    {
40    }
41
42    bool nonZero(bool checkStyle = true) const
43    {
44        return width() && (!checkStyle || m_style != BNONE);
45    }
46
47    bool isTransparent() const
48    {
49        return m_color.isValid() && !m_color.alpha();
50    }
51
52    bool isVisible(bool checkStyle = true) const
53    {
54        return nonZero(checkStyle) && !isTransparent() && (!checkStyle || m_style != BHIDDEN);
55    }
56
57    bool operator==(const BorderValue& o) const
58    {
59        return m_width == o.m_width && m_style == o.m_style && m_color == o.m_color;
60    }
61
62    bool operator!=(const BorderValue& o) const
63    {
64        return !(*this == o);
65    }
66
67    const Color& color() const { return m_color; }
68    unsigned short width() const { return m_width; }
69    EBorderStyle style() const { return static_cast<EBorderStyle>(m_style); }
70
71protected:
72    Color m_color;
73    unsigned m_width : 12;
74    unsigned m_style : 4; // EBorderStyle
75};
76
77} // namespace WebCore
78
79#endif // BorderValue_h
80