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GridPosition.cpp
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123 lines (106 loc) · 3.83 KB
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/*
* Copyright (C) 2017 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,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "GridPosition.h"
#include <wtf/text/TextStream.h>
namespace WebCore {
std::optional<int> GridPosition::gMaxPositionForTesting;
static const int kGridMaxPosition = 1000000;
void GridPosition::setExplicitPosition(int position, const String& namedGridLine)
{
m_type = ExplicitPosition;
setIntegerPosition(position);
m_namedGridLine = namedGridLine;
}
void GridPosition::setAutoPosition()
{
m_type = AutoPosition;
m_integerPosition = 0;
}
// 'span' values cannot be negative, yet we reuse the <integer> position which can
// be. This means that we have to convert the span position to an integer, losing
// some precision here. It shouldn't be an issue in practice though.
void GridPosition::setSpanPosition(int position, const String& namedGridLine)
{
m_type = SpanPosition;
setIntegerPosition(position);
m_namedGridLine = namedGridLine;
}
void GridPosition::setNamedGridArea(const String& namedGridArea)
{
m_type = NamedGridAreaPosition;
m_namedGridLine = namedGridArea;
}
int GridPosition::integerPosition() const
{
ASSERT(type() == ExplicitPosition);
return m_integerPosition;
}
String GridPosition::namedGridLine() const
{
ASSERT(type() == ExplicitPosition || type() == SpanPosition || type() == NamedGridAreaPosition);
return m_namedGridLine;
}
int GridPosition::spanPosition() const
{
ASSERT(type() == SpanPosition);
return m_integerPosition;
}
int GridPosition::max()
{
return gMaxPositionForTesting.value_or(kGridMaxPosition);
}
int GridPosition::min()
{
return -max();
}
bool GridPosition::operator==(const GridPosition& other) const
{
return m_type == other.m_type && m_integerPosition == other.m_integerPosition && m_namedGridLine == other.m_namedGridLine;
}
void GridPosition::setMaxPositionForTesting(unsigned maxPosition)
{
gMaxPositionForTesting = static_cast<int>(maxPosition);
}
TextStream& operator<<(TextStream& ts, const GridPosition& o)
{
switch (o.type()) {
case AutoPosition:
return ts << "auto";
case ExplicitPosition:
return ts << o.namedGridLine() << " " << o.integerPosition();
case SpanPosition:
return ts << "span" << " " << o.namedGridLine() << " " << o.integerPosition();
case NamedGridAreaPosition:
return ts << o.namedGridLine();
}
return ts;
}
} // namespace WebCore