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Copyright (C) 1999 Lars Knoll (
Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
Copyright (c) 2012, Google Inc. All rights reserved.
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
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.
#ifndef LengthBox_h
#define LengthBox_h
#include "platform/Length.h"
#include "platform/PlatformExport.h"
#include "platform/text/TextDirection.h"
#include "platform/text/WritingMode.h"
namespace blink {
class PLATFORM_EXPORT LengthBox {
LengthBox(LengthType t)
: m_left(t)
, m_right(t)
, m_top(t)
, m_bottom(t)
LengthBox(int v)
: m_left(Length(v, Fixed))
, m_right(Length(v, Fixed))
, m_top(Length(v, Fixed))
, m_bottom(Length(v, Fixed))
LengthBox(const Length& t, const Length& r, const Length& b, const Length& l)
: m_left(l)
, m_right(r)
, m_top(t)
, m_bottom(b)
LengthBox(int t, int r, int b, int l)
: m_left(Length(l, Fixed))
, m_right(Length(r, Fixed))
, m_top(Length(t, Fixed))
, m_bottom(Length(b, Fixed))
const Length& left() const { return m_left; }
const Length& right() const { return m_right; }
const Length& top() const { return m_top; }
const Length& bottom() const { return m_bottom; }
const Length& logicalLeft(WritingMode) const;
const Length& logicalRight(WritingMode) const;
const Length& before(WritingMode) const;
const Length& after(WritingMode) const;
const Length& start(WritingMode, TextDirection) const;
const Length& end(WritingMode, TextDirection) const;
bool operator==(const LengthBox& o) const
return m_left == o.m_left && m_right == o.m_right && m_top == o.m_top && m_bottom == o.m_bottom;
bool operator!=(const LengthBox& o) const
return !(*this == o);
bool nonZero() const
return !(m_left.isZero() && m_right.isZero() && m_top.isZero() && m_bottom.isZero());
// Must be public for SET_VAR in RenderStyle.h
Length m_left;
Length m_right;
Length m_top;
Length m_bottom;
} // namespace blink
#endif // LengthBox_h