blob: 4ac11e70dcb3918d2610412d7ab89548c94fe420 [file] [log] [blame]
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef GridResolvedPosition_h
#define GridResolvedPosition_h
#include "core/style/GridPosition.h"
#include "wtf/Allocator.h"
namespace blink {
struct GridSpan;
class LayoutBox;
class ComputedStyle;
enum GridPositionSide {
ColumnStartSide,
ColumnEndSide,
RowStartSide,
RowEndSide
};
enum GridTrackSizingDirection {
ForColumns,
ForRows
};
// This class represents a line index into one of the dimensions of the grid array.
// Wraps a size_t integer just for the purpose of knowing what we manipulate in the grid code.
class GridResolvedPosition {
DISALLOW_NEW();
public:
static bool isValidNamedLineOrArea(const String& lineName, const ComputedStyle&, GridPositionSide);
static GridPositionSide initialPositionSide(GridTrackSizingDirection);
static GridPositionSide finalPositionSide(GridTrackSizingDirection);
static void initialAndFinalPositionsFromStyle(const ComputedStyle&, const LayoutBox&, GridTrackSizingDirection, GridPosition &initialPosition, GridPosition &finalPosition);
static GridSpan resolveGridPositionsFromAutoPlacementPosition(const ComputedStyle&, const LayoutBox&, GridTrackSizingDirection, const GridResolvedPosition&);
static PassOwnPtr<GridSpan> resolveGridPositionsFromStyle(const ComputedStyle&, const LayoutBox&, GridTrackSizingDirection);
static GridResolvedPosition resolveNamedGridLinePositionFromStyle(const ComputedStyle&, const GridPosition&, GridPositionSide);
static GridResolvedPosition resolveGridPositionFromStyle(const ComputedStyle&, const GridPosition&, GridPositionSide);
static PassOwnPtr<GridSpan> resolveGridPositionAgainstOppositePosition(const ComputedStyle&, const GridResolvedPosition& resolvedOppositePosition, const GridPosition&, GridPositionSide);
static PassOwnPtr<GridSpan> resolveNamedGridLinePositionAgainstOppositePosition(const ComputedStyle&, const GridResolvedPosition& resolvedOppositePosition, const GridPosition&, GridPositionSide);
GridResolvedPosition(size_t position)
: m_integerPosition(position)
{
}
GridResolvedPosition& operator*()
{
return *this;
}
GridResolvedPosition& operator++()
{
m_integerPosition++;
return *this;
}
bool operator==(const GridResolvedPosition& other) const
{
return m_integerPosition == other.m_integerPosition;
}
bool operator!=(const GridResolvedPosition& other) const
{
return m_integerPosition != other.m_integerPosition;
}
bool operator<(const GridResolvedPosition& other) const
{
return m_integerPosition < other.m_integerPosition;
}
bool operator>(const GridResolvedPosition& other) const
{
return m_integerPosition > other.m_integerPosition;
}
bool operator<=(const GridResolvedPosition& other) const
{
return m_integerPosition <= other.m_integerPosition;
}
bool operator>=(const GridResolvedPosition& other) const
{
return m_integerPosition >= other.m_integerPosition;
}
size_t toInt() const
{
return m_integerPosition;
}
GridResolvedPosition next() const
{
return GridResolvedPosition(m_integerPosition + 1);
}
GridResolvedPosition prev() const
{
return GridResolvedPosition(m_integerPosition > 0 ? m_integerPosition - 1 : 0);
}
static size_t explicitGridColumnCount(const ComputedStyle&);
static size_t explicitGridRowCount(const ComputedStyle&);
private:
static size_t explicitGridSizeForSide(const ComputedStyle&, GridPositionSide);
size_t m_integerPosition;
};
} // namespace blink
#endif // GridResolvedPosition_h