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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef GridResolvedPosition_h | |
| 6 #define GridResolvedPosition_h | |
| 7 | |
| 8 #include "core/layout/style/GridPosition.h" | |
| 9 | |
| 10 namespace blink { | |
| 11 | |
| 12 struct GridSpan; | |
| 13 class LayoutBox; | |
| 14 class ComputedStyle; | |
| 15 | |
| 16 enum GridPositionSide { | |
| 17 ColumnStartSide, | |
| 18 ColumnEndSide, | |
| 19 RowStartSide, | |
| 20 RowEndSide | |
| 21 }; | |
| 22 | |
| 23 enum GridTrackSizingDirection { | |
| 24 ForColumns, | |
| 25 ForRows | |
| 26 }; | |
| 27 | |
| 28 // This class represents an index into one of the dimensions of the grid array. | |
| 29 // Wraps a size_t integer just for the purpose of knowing what we manipulate in
the grid code. | |
| 30 class GridResolvedPosition { | |
| 31 public: | |
| 32 static GridResolvedPosition adjustGridPositionForAfterEndSide(size_t resolve
dPosition) | |
| 33 { | |
| 34 return resolvedPosition ? GridResolvedPosition(resolvedPosition - 1) : G
ridResolvedPosition(0); | |
| 35 } | |
| 36 | |
| 37 static GridResolvedPosition adjustGridPositionForSide(size_t resolvedPositio
n, GridPositionSide side) | |
| 38 { | |
| 39 // An item finishing on the N-th line belongs to the N-1-th cell. | |
| 40 if (side == ColumnEndSide || side == RowEndSide) | |
| 41 return adjustGridPositionForAfterEndSide(resolvedPosition); | |
| 42 | |
| 43 return GridResolvedPosition(resolvedPosition); | |
| 44 } | |
| 45 | |
| 46 static void initialAndFinalPositionsFromStyle(const ComputedStyle&, const La
youtBox&, GridTrackSizingDirection, GridPosition &initialPosition, GridPosition
&finalPosition); | |
| 47 static GridSpan resolveGridPositionsFromAutoPlacementPosition(const Computed
Style&, const LayoutBox&, GridTrackSizingDirection, const GridResolvedPosition&)
; | |
| 48 static PassOwnPtr<GridSpan> resolveGridPositionsFromStyle(const ComputedStyl
e&, const LayoutBox&, GridTrackSizingDirection); | |
| 49 static GridResolvedPosition resolveNamedGridLinePositionFromStyle(const Comp
utedStyle&, const GridPosition&, GridPositionSide); | |
| 50 static GridResolvedPosition resolveGridPositionFromStyle(const ComputedStyle
&, const GridPosition&, GridPositionSide); | |
| 51 static PassOwnPtr<GridSpan> resolveGridPositionAgainstOppositePosition(const
ComputedStyle&, const GridResolvedPosition& resolvedOppositePosition, const Gri
dPosition&, GridPositionSide); | |
| 52 static PassOwnPtr<GridSpan> resolveNamedGridLinePositionAgainstOppositePosit
ion(const ComputedStyle&, const GridResolvedPosition& resolvedOppositePosition,
const GridPosition&, GridPositionSide); | |
| 53 | |
| 54 GridResolvedPosition(size_t position) | |
| 55 : m_integerPosition(position) | |
| 56 { | |
| 57 } | |
| 58 | |
| 59 GridResolvedPosition(const GridPosition& position, GridPositionSide side) | |
| 60 { | |
| 61 ASSERT(position.integerPosition()); | |
| 62 size_t integerPosition = position.integerPosition() - 1; | |
| 63 | |
| 64 m_integerPosition = adjustGridPositionForSide(integerPosition, side).toI
nt(); | |
| 65 } | |
| 66 | |
| 67 GridResolvedPosition& operator*() | |
| 68 { | |
| 69 return *this; | |
| 70 } | |
| 71 | |
| 72 GridResolvedPosition& operator++() | |
| 73 { | |
| 74 m_integerPosition++; | |
| 75 return *this; | |
| 76 } | |
| 77 | |
| 78 bool operator==(const GridResolvedPosition& other) const | |
| 79 { | |
| 80 return m_integerPosition == other.m_integerPosition; | |
| 81 } | |
| 82 | |
| 83 bool operator!=(const GridResolvedPosition& other) const | |
| 84 { | |
| 85 return m_integerPosition != other.m_integerPosition; | |
| 86 } | |
| 87 | |
| 88 bool operator<(const GridResolvedPosition& other) const | |
| 89 { | |
| 90 return m_integerPosition < other.m_integerPosition; | |
| 91 } | |
| 92 | |
| 93 bool operator>(const GridResolvedPosition& other) const | |
| 94 { | |
| 95 return m_integerPosition > other.m_integerPosition; | |
| 96 } | |
| 97 | |
| 98 bool operator<=(const GridResolvedPosition& other) const | |
| 99 { | |
| 100 return m_integerPosition <= other.m_integerPosition; | |
| 101 } | |
| 102 | |
| 103 bool operator>=(const GridResolvedPosition& other) const | |
| 104 { | |
| 105 return m_integerPosition >= other.m_integerPosition; | |
| 106 } | |
| 107 | |
| 108 size_t toInt() const | |
| 109 { | |
| 110 return m_integerPosition; | |
| 111 } | |
| 112 | |
| 113 GridResolvedPosition next() const | |
| 114 { | |
| 115 return GridResolvedPosition(m_integerPosition + 1); | |
| 116 } | |
| 117 | |
| 118 static size_t explicitGridColumnCount(const ComputedStyle&); | |
| 119 static size_t explicitGridRowCount(const ComputedStyle&); | |
| 120 | |
| 121 private: | |
| 122 | |
| 123 static size_t explicitGridSizeForSide(const ComputedStyle&, GridPositionSide
); | |
| 124 | |
| 125 size_t m_integerPosition; | |
| 126 }; | |
| 127 | |
| 128 } // namespace blink | |
| 129 | |
| 130 #endif // GridResolvedPosition_h | |
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Chromium Code Reviews
Issue 1045723009:
Move core/layout/style to core/style (Closed)
Base URL: svn://svn.chromium.org/blink/trunk