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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,
* 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.
*/
#ifndef GridCoordinate_h
#define GridCoordinate_h
#if ENABLE(CSS_GRID_LAYOUT)
#include "GridResolvedPosition.h"
#include <wtf/HashMap.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
// A span in a single direction (either rows or columns). Note that |resolvedInitialPosition|
// and |resolvedFinalPosition| are grid areas' indexes, NOT grid lines'. Iterating over the
// span should include both |resolvedInitialPosition| and |resolvedFinalPosition| to be correct.
class GridSpan {
public:
GridSpan(const GridResolvedPosition& resolvedInitialPosition, const GridResolvedPosition& resolvedFinalPosition)
: resolvedInitialPosition(resolvedInitialPosition)
, resolvedFinalPosition(resolvedFinalPosition)
{
ASSERT(resolvedInitialPosition <= resolvedFinalPosition);
}
bool operator==(const GridSpan& o) const
{
return resolvedInitialPosition == o.resolvedInitialPosition && resolvedFinalPosition == o.resolvedFinalPosition;
}
size_t integerSpan() const
{
return resolvedFinalPosition.toInt() - resolvedInitialPosition.toInt() + 1;
}
GridResolvedPosition resolvedInitialPosition;
GridResolvedPosition resolvedFinalPosition;
typedef GridResolvedPosition iterator;
iterator begin() const
{
return resolvedInitialPosition;
}
iterator end() const
{
return resolvedFinalPosition.next();
}
};
// This represents a grid area that spans in both rows' and columns' direction.
class GridCoordinate {
public:
// HashMap requires a default constuctor.
GridCoordinate()
: columns(0, 0)
, rows(0, 0)
{
}
GridCoordinate(const GridSpan& r, const GridSpan& c)
: columns(c)
, rows(r)
{
}
bool operator==(const GridCoordinate& o) const
{
return columns == o.columns && rows == o.rows;
}
bool operator!=(const GridCoordinate& o) const
{
return !(*this == o);
}
GridSpan columns;
GridSpan rows;
};
typedef HashMap<String, GridCoordinate> NamedGridAreaMap;
} // namespace WebCore
#endif /* ENABLE(CSS_GRID_LAYOUT) */
#endif // GridCoordinate_h
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