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 CollapsedBorderValue_h
26#define CollapsedBorderValue_h
27
28#include "core/rendering/style/BorderValue.h"
29
30namespace blink {
31
32class CollapsedBorderValue {
33public:
34    CollapsedBorderValue()
35        : m_color(0)
36        , m_colorIsCurrentColor(true)
37        , m_width(0)
38        , m_style(BNONE)
39        , m_precedence(BOFF)
40        , m_transparent(false)
41    {
42    }
43
44    CollapsedBorderValue(const BorderValue& border, const StyleColor& color, EBorderPrecedence precedence)
45        : m_color(color.resolve(Color()))
46        , m_colorIsCurrentColor(color.isCurrentColor())
47        , m_width(border.nonZero() ? border.width() : 0)
48        , m_style(border.style())
49        , m_precedence(precedence)
50        , m_transparent(border.isTransparent())
51    {
52    }
53
54    unsigned width() const { return m_style > BHIDDEN ? m_width : 0; }
55    EBorderStyle style() const { return static_cast<EBorderStyle>(m_style); }
56    bool exists() const { return m_precedence != BOFF; }
57    StyleColor color() const { return m_colorIsCurrentColor ? StyleColor::currentColor() : StyleColor(m_color); }
58    bool isTransparent() const { return m_transparent; }
59    EBorderPrecedence precedence() const { return static_cast<EBorderPrecedence>(m_precedence); }
60
61    bool isSameIgnoringColor(const CollapsedBorderValue& o) const
62    {
63        return width() == o.width() && style() == o.style() && precedence() == o.precedence();
64    }
65
66private:
67    Color m_color;
68    unsigned m_colorIsCurrentColor : 1;
69    unsigned m_width : 23;
70    unsigned m_style : 4; // EBorderStyle
71    unsigned m_precedence : 3; // EBorderPrecedence
72    unsigned m_transparent : 1;
73};
74
75} // namespace blink
76
77#endif // CollapsedBorderValue_h
78