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/*
* Copyright (C) 2013 Google Inc. All rights reserved.
* Copyright (C) 2013, 2014 Igalia S.L.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "Length.h"
namespace WebCore {
// This class wraps the <track-breadth> which can be either a <percentage>, <length>, min-content, max-content
// or <flex>. This class avoids spreading the knowledge of <flex> throughout the rendering directory by adding
// an new unit to Length.h.
class GridLength {
public:
GridLength(const Length& length)
: m_length(length)
, m_flex(0)
, m_type(LengthType)
{
ASSERT(!length.isUndefined());
}
explicit GridLength(double flex)
: m_flex(flex)
, m_type(FlexType)
{
}
bool isLength() const { return m_type == LengthType; }
bool isFlex() const { return m_type == FlexType; }
const Length& length() const { ASSERT(isLength()); return m_length; }
double flex() const { ASSERT(isFlex()); return m_flex; }
bool isPercentage() const { return m_type == LengthType && m_length.isPercentOrCalculated(); }
bool operator==(const GridLength& o) const
{
return m_type == o.m_type && m_flex == o.m_flex && m_length == o.m_length;
}
bool isContentSized() const { return m_type == LengthType && (m_length.isAuto() || m_length.isMinContent() || m_length.isMaxContent()); }
bool isAuto() const { return m_type == LengthType && m_length.isAuto(); }
private:
// Ideally we would put the 2 following fields in a union, but Length has a constructor,
// a destructor and a copy assignment which isn't allowed.
Length m_length;
double m_flex;
enum GridLengthType {
LengthType,
FlexType
};
GridLengthType m_type;
};
} // namespace WebCore