LCOV - code coverage report
Current view: directory - layout/xul/base/src/grid - nsGrid.h (source / functions) Found Hit Coverage
Test: app.info Lines: 3 0 0.0 %
Date: 2012-06-02 Functions: 3 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : 
       3                 : /* ***** BEGIN LICENSE BLOCK *****
       4                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       5                 :  *
       6                 :  * The contents of this file are subject to the Mozilla Public License Version
       7                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       8                 :  * the License. You may obtain a copy of the License at
       9                 :  * http://www.mozilla.org/MPL/
      10                 :  *
      11                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      12                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      13                 :  * for the specific language governing rights and limitations under the
      14                 :  * License.
      15                 :  *
      16                 :  * The Original Code is Mozilla Communicator client code.
      17                 :  *
      18                 :  * The Initial Developer of the Original Code is 
      19                 :  * Netscape Communications Corporation.
      20                 :  * Portions created by the Initial Developer are Copyright (C) 1998
      21                 :  * the Initial Developer. All Rights Reserved.
      22                 :  *
      23                 :  * Contributor(s):
      24                 :  *   Eric D Vaughan (original author)
      25                 :  *
      26                 :  * Alternatively, the contents of this file may be used under the terms of
      27                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      28                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      29                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      30                 :  * of those above. If you wish to allow use of your version of this file only
      31                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      32                 :  * use your version of this file under the terms of the MPL, indicate your
      33                 :  * decision by deleting the provisions above and replace them with the notice
      34                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      35                 :  * the provisions above, a recipient may use your version of this file under
      36                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      37                 :  *
      38                 :  * ***** END LICENSE BLOCK ***** */
      39                 : 
      40                 : #ifndef nsGrid_h___
      41                 : #define nsGrid_h___
      42                 : 
      43                 : #include "nsStackLayout.h"
      44                 : #include "nsIGridPart.h"
      45                 : #include "nsCOMPtr.h"
      46                 : #include "nsIFrame.h"
      47                 : 
      48                 : class nsGridRowGroupLayout;
      49                 : class nsGridRowLayout;
      50                 : class nsBoxLayoutState;
      51                 : class nsGridCell;
      52                 : 
      53                 : //#define DEBUG_grid 1
      54                 : 
      55                 : /**
      56                 :  * The grid data structure, i.e., the grid cellmap.
      57                 :  */
      58                 : class nsGrid
      59                 : {
      60                 : public:
      61                 :   nsGrid();
      62                 :   ~nsGrid();
      63                 : 
      64                 :   nsGridRow* GetColumnAt(PRInt32 aIndex, bool aIsHorizontal = true);
      65                 :   nsGridRow* GetRowAt(PRInt32 aIndex, bool aIsHorizontal = true);
      66                 :   nsGridCell* GetCellAt(PRInt32 aX, PRInt32 aY);
      67                 : 
      68                 :   void NeedsRebuild(nsBoxLayoutState& aBoxLayoutState);
      69                 :   void RebuildIfNeeded();
      70                 : 
      71                 :   // For all the methods taking an aIsHorizontal parameter:
      72                 :   // * When aIsHorizontal is true, the words "rows" and (for
      73                 :   //   GetColumnCount) "columns" refer to their normal meanings.
      74                 :   // * When aIsHorizontal is false, the meanings are flipped.
      75                 :   // FIXME:  Maybe eliminate GetColumnCount and change aIsHorizontal to
      76                 :   // aIsRows?  (Calling it horizontal doesn't really make sense because
      77                 :   // row groups and columns have vertical orientation, whereas column
      78                 :   // groups and rows are horizontal.)
      79                 : 
      80                 :   nsSize GetPrefRowSize(nsBoxLayoutState& aBoxLayoutState, PRInt32 aRowIndex, bool aIsHorizontal = true);
      81                 :   nsSize GetMinRowSize(nsBoxLayoutState& aBoxLayoutState, PRInt32 aRowIndex, bool aIsHorizontal = true);
      82                 :   nsSize GetMaxRowSize(nsBoxLayoutState& aBoxLayoutState, PRInt32 aRowIndex, bool aIsHorizontal = true);
      83                 :   nscoord GetRowFlex(nsBoxLayoutState& aBoxLayoutState, PRInt32 aRowIndex, bool aIsHorizontal = true);
      84                 : 
      85                 :   nscoord GetPrefRowHeight(nsBoxLayoutState& aBoxLayoutState, PRInt32 aRowIndex, bool aIsHorizontal = true);
      86                 :   nscoord GetMinRowHeight(nsBoxLayoutState& aBoxLayoutState, PRInt32 aRowIndex, bool aIsHorizontal = true);
      87                 :   nscoord GetMaxRowHeight(nsBoxLayoutState& aBoxLayoutState, PRInt32 aRowIndex, bool aIsHorizontal = true);
      88                 :   void GetRowOffsets(nsBoxLayoutState& aState, PRInt32 aIndex, nscoord& aTop, nscoord& aBottom, bool aIsHorizontal = true);
      89                 : 
      90                 :   void RowAddedOrRemoved(nsBoxLayoutState& aBoxLayoutState, PRInt32 aIndex, bool aIsHorizontal = true);
      91                 :   void CellAddedOrRemoved(nsBoxLayoutState& aBoxLayoutState, PRInt32 aIndex, bool aIsHorizontal = true);
      92                 :   void DirtyRows(nsIBox* aRowBox, nsBoxLayoutState& aState);
      93                 : #ifdef DEBUG_grid
      94                 :   void PrintCellMap();
      95                 : #endif
      96                 :   PRInt32 GetExtraColumnCount(bool aIsHorizontal = true);
      97                 :   PRInt32 GetExtraRowCount(bool aIsHorizontal = true);
      98                 : 
      99                 : // accessors
     100               0 :   void SetBox(nsIBox* aBox) { mBox = aBox; }
     101                 :   nsIBox* GetBox() { return mBox; }
     102               0 :   nsIBox* GetRowsBox() { return mRowsBox; }
     103               0 :   nsIBox* GetColumnsBox() { return mColumnsBox; }
     104                 :   PRInt32 GetRowCount(PRInt32 aIsHorizontal = true);
     105                 :   PRInt32 GetColumnCount(PRInt32 aIsHorizontal = true);
     106                 : 
     107                 :   static nsIBox* GetScrolledBox(nsIBox* aChild);
     108                 :   static nsIBox* GetScrollBox(nsIBox* aChild);
     109                 :   static nsIGridPart* GetPartFromBox(nsIBox* aBox);
     110                 :   void GetFirstAndLastRow(nsBoxLayoutState& aState, 
     111                 :                           PRInt32& aFirstIndex, 
     112                 :                           PRInt32& aLastIndex, 
     113                 :                           nsGridRow*& aFirstRow,
     114                 :                           nsGridRow*& aLastRow,
     115                 :                           bool aIsHorizontal);
     116                 : 
     117                 : private:
     118                 : 
     119                 :   nsMargin GetBoxTotalMargin(nsIBox* aBox, bool aIsHorizontal = true);
     120                 : 
     121                 :   void FreeMap();
     122                 :   void FindRowsAndColumns(nsIBox** aRows, nsIBox** aColumns);
     123                 :   void BuildRows(nsIBox* aBox, PRInt32 aSize, nsGridRow** aColumnsRows, bool aIsHorizontal = true);
     124                 :   nsGridCell* BuildCellMap(PRInt32 aRows, PRInt32 aColumns);
     125                 :   void PopulateCellMap(nsGridRow* aRows, nsGridRow* aColumns, PRInt32 aRowCount, PRInt32 aColumnCount, bool aIsHorizontal = true);
     126                 :   void CountRowsColumns(nsIBox* aBox, PRInt32& aRowCount, PRInt32& aComputedColumnCount);
     127                 :   void SetLargestSize(nsSize& aSize, nscoord aHeight, bool aIsHorizontal = true);
     128                 :   void SetSmallestSize(nsSize& aSize, nscoord aHeight, bool aIsHorizontal = true);
     129                 :   bool IsGrid(nsIBox* aBox);
     130                 : 
     131                 :   // the box that implement the <grid> tag
     132                 :   nsIBox* mBox;
     133                 : 
     134                 :   // an array of row object
     135                 :   nsGridRow* mRows;
     136                 : 
     137                 :   // an array of columns objects.
     138                 :   nsGridRow* mColumns;
     139                 : 
     140                 :   // the first in the <grid> that implements the <rows> tag.
     141                 :   nsIBox* mRowsBox;
     142                 : 
     143                 :   // the first in the <grid> that implements the <columns> tag.
     144                 :   nsIBox* mColumnsBox;
     145                 : 
     146                 :   // a flag that is false tells us to rebuild the who grid
     147                 :   bool mNeedsRebuild;
     148                 : 
     149                 :   // number of rows and columns as defined by the XUL
     150                 :   PRInt32 mRowCount;
     151                 :   PRInt32 mColumnCount;
     152                 : 
     153                 :   // number of rows and columns that are implied but not 
     154                 :   // explicitly defined int he XUL
     155                 :   PRInt32 mExtraRowCount;
     156                 :   PRInt32 mExtraColumnCount;
     157                 : 
     158                 :   // x,y array of cells in the rows and columns
     159                 :   nsGridCell* mCellMap;
     160                 : 
     161                 :   // a flag that when true suppresses all other MarkDirties. This
     162                 :   // prevents lots of extra work being done.
     163                 :   bool mMarkingDirty;
     164                 : };
     165                 : 
     166                 : #endif
     167                 : 

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