The Tor Browser / file comparison
comparison: layout/xul/grid/nsGrid.h
layout/xul/grid/nsGrid.h
- branch
- TOR_BUG_3246
- changeset 6
- 8bccb770b82d
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| -1:000000000000 | 0:a770db48c3e8 |
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #ifndef nsGrid_h___ | |
| 8 #define nsGrid_h___ | |
| 9 | |
| 10 #include "nsStackLayout.h" | |
| 11 #include "nsIGridPart.h" | |
| 12 #include "nsCOMPtr.h" | |
| 13 | |
| 14 class nsGridRowGroupLayout; | |
| 15 class nsGridRowLayout; | |
| 16 class nsBoxLayoutState; | |
| 17 class nsGridCell; | |
| 18 | |
| 19 //#define DEBUG_grid 1 | |
| 20 | |
| 21 /** | |
| 22 * The grid data structure, i.e., the grid cellmap. | |
| 23 */ | |
| 24 class nsGrid | |
| 25 { | |
| 26 public: | |
| 27 nsGrid(); | |
| 28 ~nsGrid(); | |
| 29 | |
| 30 nsGridRow* GetColumnAt(int32_t aIndex, bool aIsHorizontal = true); | |
| 31 nsGridRow* GetRowAt(int32_t aIndex, bool aIsHorizontal = true); | |
| 32 nsGridCell* GetCellAt(int32_t aX, int32_t aY); | |
| 33 | |
| 34 void NeedsRebuild(nsBoxLayoutState& aBoxLayoutState); | |
| 35 void RebuildIfNeeded(); | |
| 36 | |
| 37 // For all the methods taking an aIsHorizontal parameter: | |
| 38 // * When aIsHorizontal is true, the words "rows" and (for | |
| 39 // GetColumnCount) "columns" refer to their normal meanings. | |
| 40 // * When aIsHorizontal is false, the meanings are flipped. | |
| 41 // FIXME: Maybe eliminate GetColumnCount and change aIsHorizontal to | |
| 42 // aIsRows? (Calling it horizontal doesn't really make sense because | |
| 43 // row groups and columns have vertical orientation, whereas column | |
| 44 // groups and rows are horizontal.) | |
| 45 | |
| 46 nsSize GetPrefRowSize(nsBoxLayoutState& aBoxLayoutState, int32_t aRowIndex, bool aIsHorizontal = true); | |
| 47 nsSize GetMinRowSize(nsBoxLayoutState& aBoxLayoutState, int32_t aRowIndex, bool aIsHorizontal = true); | |
| 48 nsSize GetMaxRowSize(nsBoxLayoutState& aBoxLayoutState, int32_t aRowIndex, bool aIsHorizontal = true); | |
| 49 nscoord GetRowFlex(nsBoxLayoutState& aBoxLayoutState, int32_t aRowIndex, bool aIsHorizontal = true); | |
| 50 | |
| 51 nscoord GetPrefRowHeight(nsBoxLayoutState& aBoxLayoutState, int32_t aRowIndex, bool aIsHorizontal = true); | |
| 52 nscoord GetMinRowHeight(nsBoxLayoutState& aBoxLayoutState, int32_t aRowIndex, bool aIsHorizontal = true); | |
| 53 nscoord GetMaxRowHeight(nsBoxLayoutState& aBoxLayoutState, int32_t aRowIndex, bool aIsHorizontal = true); | |
| 54 void GetRowOffsets(nsBoxLayoutState& aState, int32_t aIndex, nscoord& aTop, nscoord& aBottom, bool aIsHorizontal = true); | |
| 55 | |
| 56 void RowAddedOrRemoved(nsBoxLayoutState& aBoxLayoutState, int32_t aIndex, bool aIsHorizontal = true); | |
| 57 void CellAddedOrRemoved(nsBoxLayoutState& aBoxLayoutState, int32_t aIndex, bool aIsHorizontal = true); | |
| 58 void DirtyRows(nsIFrame* aRowBox, nsBoxLayoutState& aState); | |
| 59 #ifdef DEBUG_grid | |
| 60 void PrintCellMap(); | |
| 61 #endif | |
| 62 int32_t GetExtraColumnCount(bool aIsHorizontal = true); | |
| 63 int32_t GetExtraRowCount(bool aIsHorizontal = true); | |
| 64 | |
| 65 // accessors | |
| 66 void SetBox(nsIFrame* aBox) { mBox = aBox; } | |
| 67 nsIFrame* GetBox() { return mBox; } | |
| 68 nsIFrame* GetRowsBox() { return mRowsBox; } | |
| 69 nsIFrame* GetColumnsBox() { return mColumnsBox; } | |
| 70 int32_t GetRowCount(int32_t aIsHorizontal = true); | |
| 71 int32_t GetColumnCount(int32_t aIsHorizontal = true); | |
| 72 | |
| 73 static nsIFrame* GetScrolledBox(nsIFrame* aChild); | |
| 74 static nsIFrame* GetScrollBox(nsIFrame* aChild); | |
| 75 static nsIGridPart* GetPartFromBox(nsIFrame* aBox); | |
| 76 void GetFirstAndLastRow(nsBoxLayoutState& aState, | |
| 77 int32_t& aFirstIndex, | |
| 78 int32_t& aLastIndex, | |
| 79 nsGridRow*& aFirstRow, | |
| 80 nsGridRow*& aLastRow, | |
| 81 bool aIsHorizontal); | |
| 82 | |
| 83 private: | |
| 84 | |
| 85 nsMargin GetBoxTotalMargin(nsIFrame* aBox, bool aIsHorizontal = true); | |
| 86 | |
| 87 void FreeMap(); | |
| 88 void FindRowsAndColumns(nsIFrame** aRows, nsIFrame** aColumns); | |
| 89 void BuildRows(nsIFrame* aBox, int32_t aSize, nsGridRow** aColumnsRows, bool aIsHorizontal = true); | |
| 90 nsGridCell* BuildCellMap(int32_t aRows, int32_t aColumns); | |
| 91 void PopulateCellMap(nsGridRow* aRows, nsGridRow* aColumns, int32_t aRowCount, int32_t aColumnCount, bool aIsHorizontal = true); | |
| 92 void CountRowsColumns(nsIFrame* aBox, int32_t& aRowCount, int32_t& aComputedColumnCount); | |
| 93 void SetLargestSize(nsSize& aSize, nscoord aHeight, bool aIsHorizontal = true); | |
| 94 void SetSmallestSize(nsSize& aSize, nscoord aHeight, bool aIsHorizontal = true); | |
| 95 bool IsGrid(nsIFrame* aBox); | |
| 96 | |
| 97 // the box that implement the <grid> tag | |
| 98 nsIFrame* mBox; | |
| 99 | |
| 100 // an array of row object | |
| 101 nsGridRow* mRows; | |
| 102 | |
| 103 // an array of columns objects. | |
| 104 nsGridRow* mColumns; | |
| 105 | |
| 106 // the first in the <grid> that implements the <rows> tag. | |
| 107 nsIFrame* mRowsBox; | |
| 108 | |
| 109 // the first in the <grid> that implements the <columns> tag. | |
| 110 nsIFrame* mColumnsBox; | |
| 111 | |
| 112 // a flag that is false tells us to rebuild the who grid | |
| 113 bool mNeedsRebuild; | |
| 114 | |
| 115 // number of rows and columns as defined by the XUL | |
| 116 int32_t mRowCount; | |
| 117 int32_t mColumnCount; | |
| 118 | |
| 119 // number of rows and columns that are implied but not | |
| 120 // explicitly defined int he XUL | |
| 121 int32_t mExtraRowCount; | |
| 122 int32_t mExtraColumnCount; | |
| 123 | |
| 124 // x,y array of cells in the rows and columns | |
| 125 nsGridCell* mCellMap; | |
| 126 | |
| 127 // a flag that when true suppresses all other MarkDirties. This | |
| 128 // prevents lots of extra work being done. | |
| 129 bool mMarkingDirty; | |
| 130 }; | |
| 131 | |
| 132 #endif | |
| 133 |
