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/*
* Copyright (C) 2000 Lars Knoll (knoll@kde.org)
* (C) 2000 Antti Koivisto (koivisto@kde.org)
* (C) 2000 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
* Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#pragma once
#include "BorderValue.h"
#include "LayoutUnit.h"
namespace WebCore {
class CollapsedBorderValue {
public:
CollapsedBorderValue()
: m_style(static_cast<unsigned>(BorderStyle::None))
, m_precedence(static_cast<unsigned>(BorderPrecedence::Off))
, m_transparent(false)
{
}
CollapsedBorderValue(const BorderValue& border, const Color& color, BorderPrecedence precedence)
: m_width(LayoutUnit(border.nonZero() ? border.width() : 0))
, m_color(color)
, m_style(static_cast<unsigned>(border.style()))
, m_precedence(static_cast<unsigned>(precedence))
, m_transparent(border.isTransparent())
{
}
LayoutUnit width() const { return style() > BorderStyle::Hidden ? m_width : 0_lu; }
BorderStyle style() const { return static_cast<BorderStyle>(m_style); }
bool exists() const { return precedence() != BorderPrecedence::Off; }
const Color& color() const { return m_color; }
bool isTransparent() const { return m_transparent; }
BorderPrecedence precedence() const { return static_cast<BorderPrecedence>(m_precedence); }
bool isSameIgnoringColor(const CollapsedBorderValue& o) const
{
return width() == o.width() && style() == o.style() && precedence() == o.precedence();
}
static LayoutUnit adjustedCollapsedBorderWidth(float borderWidth, float deviceScaleFactor, bool roundUp);
private:
LayoutUnit m_width;
Color m_color;
unsigned m_style : 4; // BorderStyle
unsigned m_precedence : 3; // BorderPrecedence
unsigned m_transparent : 1;
};
inline LayoutUnit CollapsedBorderValue::adjustedCollapsedBorderWidth(float borderWidth, float deviceScaleFactor, bool roundUp)
{
float halfCollapsedBorderWidth = (borderWidth + (roundUp ? (1 / deviceScaleFactor) : 0)) / 2;
return LayoutUnit(floorToDevicePixel(halfCollapsedBorderWidth, deviceScaleFactor));
}
} // namespace WebCore
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