1 /* 2 * Copyright (C) 2013 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef GridCoordinate_h 32 #define GridCoordinate_h 33 34 #include "wtf/HashMap.h" 35 #include "wtf/PassOwnPtr.h" 36 #include "wtf/text/WTFString.h" 37 38 namespace WebCore { 39 40 // A span in a single direction (either rows or columns). Note that |initialPositionIndex| 41 // and |finalPositionIndex| are grid areas' indexes, NOT grid lines'. Iterating over the 42 // span should include both |initialPositionIndex| and |finalPositionIndex| to be correct. 43 struct GridSpan { 44 static PassOwnPtr<GridSpan> create(size_t initialPosition, size_t finalPosition) 45 { 46 return adoptPtr(new GridSpan(initialPosition, finalPosition)); 47 } 48 49 GridSpan(size_t initialPosition, size_t finalPosition) 50 : initialPositionIndex(initialPosition) 51 , finalPositionIndex(finalPosition) 52 { 53 ASSERT(initialPositionIndex <= finalPositionIndex); 54 } 55 56 bool operator==(const GridSpan& o) const 57 { 58 return initialPositionIndex == o.initialPositionIndex && finalPositionIndex == o.finalPositionIndex; 59 } 60 61 size_t initialPositionIndex; 62 size_t finalPositionIndex; 63 }; 64 65 // This represents a grid area that spans in both rows' and columns' direction. 66 struct GridCoordinate { 67 // HashMap requires a default constuctor. 68 GridCoordinate() 69 : columns(0, 0) 70 , rows(0, 0) 71 { 72 } 73 74 GridCoordinate(const GridSpan& r, const GridSpan& c) 75 : columns(c) 76 , rows(r) 77 { 78 } 79 80 bool operator==(const GridCoordinate& o) const 81 { 82 return columns == o.columns && rows == o.rows; 83 } 84 85 bool operator!=(const GridCoordinate& o) const 86 { 87 return !(*this == o); 88 } 89 90 GridSpan columns; 91 GridSpan rows; 92 }; 93 94 typedef HashMap<String, GridCoordinate> NamedGridAreaMap; 95 96 } // namespace WebCore 97 98 #endif // GridCoordinate_h 99