LCOV - code coverage report
Current view: directory - layout/xul/base/src/grid - nsGridRowGroupLayout.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 104 0 0.0 %
Date: 2012-06-02 Functions: 13 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is Mozilla Communicator client code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Netscape Communications Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1998
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      26                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : 
      38                 : //
      39                 : // Eric Vaughan
      40                 : // Netscape Communications
      41                 : //
      42                 : // See documentation in associated header file
      43                 : //
      44                 : 
      45                 : 
      46                 : /*
      47                 :  * The nsGridRowGroupLayout implements the <rows> or <columns> tag in a grid. 
      48                 :  */
      49                 : 
      50                 : #include "nsGridRowGroupLayout.h"
      51                 : #include "nsCOMPtr.h"
      52                 : #include "nsIScrollableFrame.h"
      53                 : #include "nsBoxLayoutState.h"
      54                 : #include "nsGridLayout2.h"
      55                 : #include "nsGridRow.h"
      56                 : 
      57               0 : already_AddRefed<nsBoxLayout> NS_NewGridRowGroupLayout()
      58                 : {
      59               0 :   nsBoxLayout* layout = new nsGridRowGroupLayout();
      60               0 :   NS_IF_ADDREF(layout);
      61               0 :   return layout;
      62                 : } 
      63                 : 
      64               0 : nsGridRowGroupLayout::nsGridRowGroupLayout():nsGridRowLayout(), mRowCount(0)
      65                 : {
      66               0 : }
      67                 : 
      68               0 : nsGridRowGroupLayout::~nsGridRowGroupLayout()
      69                 : {
      70               0 : }
      71                 : 
      72                 : void
      73               0 : nsGridRowGroupLayout::ChildAddedOrRemoved(nsIBox* aBox, nsBoxLayoutState& aState)
      74                 : {
      75               0 :   PRInt32 index = 0;
      76               0 :   nsGrid* grid = GetGrid(aBox, &index);
      77               0 :   bool isHorizontal = IsHorizontal(aBox);
      78                 : 
      79               0 :   if (grid)
      80               0 :     grid->RowAddedOrRemoved(aState, index, isHorizontal);
      81               0 : }
      82                 : 
      83                 : void
      84               0 : nsGridRowGroupLayout::AddWidth(nsSize& aSize, nscoord aSize2, bool aIsHorizontal)
      85                 : {
      86               0 :   nscoord& size = GET_WIDTH(aSize, aIsHorizontal);
      87                 : 
      88               0 :   if (size == NS_INTRINSICSIZE || aSize2 == NS_INTRINSICSIZE)
      89               0 :     size = NS_INTRINSICSIZE;
      90                 :   else
      91               0 :     size += aSize2;
      92               0 : }
      93                 : 
      94                 : nsSize
      95               0 : nsGridRowGroupLayout::GetPrefSize(nsIBox* aBox, nsBoxLayoutState& aState)
      96                 : { 
      97               0 :   nsSize vpref = nsGridRowLayout::GetPrefSize(aBox, aState); 
      98                 : 
      99                 : 
     100                 :  /* It is possible that we could have some extra columns. This is when less columns in XUL were 
     101                 :   * defined that needed. And example might be a grid with 3 defined columns but a row with 4 cells in 
     102                 :   * it. We would need an extra column to make the grid work. But because that extra column does not 
     103                 :   * have a box associated with it we must add its size in manually. Remember we could have extra rows
     104                 :   * as well.
     105                 :   */
     106                 : 
     107               0 :   PRInt32 index = 0;
     108               0 :   nsGrid* grid = GetGrid(aBox, &index);
     109                 : 
     110               0 :   if (grid) 
     111                 :   {
     112                 :     // make sure we add in extra columns sizes as well
     113               0 :     bool isHorizontal = IsHorizontal(aBox);
     114               0 :     PRInt32 extraColumns = grid->GetExtraColumnCount(isHorizontal);
     115               0 :     PRInt32 start = grid->GetColumnCount(isHorizontal) - grid->GetExtraColumnCount(isHorizontal);
     116               0 :     for (PRInt32 i=0; i < extraColumns; i++)
     117                 :     {
     118                 :       nscoord pref =
     119               0 :         grid->GetPrefRowHeight(aState, i+start, !isHorizontal); // GetPrefColumnWidth
     120                 : 
     121               0 :       AddWidth(vpref, pref, isHorizontal);
     122                 :     }
     123                 :   }
     124                 : 
     125                 :   return vpref;
     126                 : }
     127                 : 
     128                 : nsSize
     129               0 : nsGridRowGroupLayout::GetMaxSize(nsIBox* aBox, nsBoxLayoutState& aState)
     130                 : {
     131               0 :  nsSize maxSize = nsGridRowLayout::GetMaxSize(aBox, aState); 
     132                 : 
     133               0 :   PRInt32 index = 0;
     134               0 :   nsGrid* grid = GetGrid(aBox, &index);
     135                 : 
     136               0 :   if (grid) 
     137                 :   {
     138                 :     // make sure we add in extra columns sizes as well
     139               0 :     bool isHorizontal = IsHorizontal(aBox);
     140               0 :     PRInt32 extraColumns = grid->GetExtraColumnCount(isHorizontal);
     141               0 :     PRInt32 start = grid->GetColumnCount(isHorizontal) - grid->GetExtraColumnCount(isHorizontal);
     142               0 :     for (PRInt32 i=0; i < extraColumns; i++)
     143                 :     {
     144                 :       nscoord max =
     145               0 :         grid->GetMaxRowHeight(aState, i+start, !isHorizontal); // GetMaxColumnWidth
     146                 : 
     147               0 :       AddWidth(maxSize, max, isHorizontal);
     148                 :     }
     149                 :   }
     150                 : 
     151                 :   return maxSize;
     152                 : }
     153                 : 
     154                 : nsSize
     155               0 : nsGridRowGroupLayout::GetMinSize(nsIBox* aBox, nsBoxLayoutState& aState)
     156                 : {
     157               0 :   nsSize minSize = nsGridRowLayout::GetMinSize(aBox, aState); 
     158                 : 
     159               0 :   PRInt32 index = 0;
     160               0 :   nsGrid* grid = GetGrid(aBox, &index);
     161                 : 
     162               0 :   if (grid) 
     163                 :   {
     164                 :     // make sure we add in extra columns sizes as well
     165               0 :     bool isHorizontal = IsHorizontal(aBox);
     166               0 :     PRInt32 extraColumns = grid->GetExtraColumnCount(isHorizontal);
     167               0 :     PRInt32 start = grid->GetColumnCount(isHorizontal) - grid->GetExtraColumnCount(isHorizontal);
     168               0 :     for (PRInt32 i=0; i < extraColumns; i++)
     169                 :     {
     170                 :       nscoord min = 
     171               0 :         grid->GetMinRowHeight(aState, i+start, !isHorizontal); // GetMinColumnWidth
     172               0 :       AddWidth(minSize, min, isHorizontal);
     173                 :     }
     174                 :   }
     175                 : 
     176                 :   return minSize;
     177                 : }
     178                 : 
     179                 : /*
     180                 :  * Run down through our children dirtying them recursively.
     181                 :  */
     182                 : void
     183               0 : nsGridRowGroupLayout::DirtyRows(nsIBox* aBox, nsBoxLayoutState& aState)
     184                 : {
     185               0 :   if (aBox) {
     186                 :     // mark us dirty
     187                 :     // XXXldb We probably don't want to walk up the ancestor chain
     188                 :     // calling MarkIntrinsicWidthsDirty for every row group.
     189               0 :     aState.PresShell()->FrameNeedsReflow(aBox, nsIPresShell::eTreeChange,
     190               0 :                                          NS_FRAME_IS_DIRTY);
     191               0 :     nsIBox* child = aBox->GetChildBox();
     192                 : 
     193               0 :     while(child) {
     194                 : 
     195                 :       // walk into scrollframes
     196               0 :       nsIBox* deepChild = nsGrid::GetScrolledBox(child);
     197                 : 
     198                 :       // walk into other monuments
     199               0 :       nsIGridPart* monument = nsGrid::GetPartFromBox(deepChild);
     200               0 :       if (monument) 
     201               0 :         monument->DirtyRows(deepChild, aState);
     202                 : 
     203               0 :       child = child->GetNextBox();
     204                 :     }
     205                 :   }
     206               0 : }
     207                 : 
     208                 : 
     209                 : void
     210               0 : nsGridRowGroupLayout::CountRowsColumns(nsIBox* aBox, PRInt32& aRowCount, PRInt32& aComputedColumnCount)
     211                 : {
     212               0 :   if (aBox) {
     213               0 :     PRInt32 startCount = aRowCount;
     214                 : 
     215               0 :     nsIBox* child = aBox->GetChildBox();
     216                 : 
     217               0 :     while(child) {
     218                 :       
     219                 :       // first see if it is a scrollframe. If so walk down into it and get the scrolled child
     220               0 :       nsIBox* deepChild = nsGrid::GetScrolledBox(child);
     221                 : 
     222               0 :       nsIGridPart* monument = nsGrid::GetPartFromBox(deepChild);
     223               0 :       if (monument) {
     224               0 :         monument->CountRowsColumns(deepChild, aRowCount, aComputedColumnCount);
     225               0 :         child = child->GetNextBox();
     226               0 :         deepChild = child;
     227               0 :         continue;
     228                 :       }
     229                 : 
     230               0 :       child = child->GetNextBox();
     231                 : 
     232                 :       // if not a monument. Then count it. It will be a bogus row
     233               0 :       aRowCount++;
     234                 :     }
     235                 : 
     236               0 :     mRowCount = aRowCount - startCount;
     237                 :   }
     238               0 : }
     239                 : 
     240                 : 
     241                 : /**
     242                 :  * Fill out the given row structure recursively
     243                 :  */
     244                 : PRInt32 
     245               0 : nsGridRowGroupLayout::BuildRows(nsIBox* aBox, nsGridRow* aRows)
     246                 : { 
     247               0 :   PRInt32 rowCount = 0;
     248                 : 
     249               0 :   if (aBox) {
     250               0 :     nsIBox* child = aBox->GetChildBox();
     251                 : 
     252               0 :     while(child) {
     253                 :       
     254                 :       // first see if it is a scrollframe. If so walk down into it and get the scrolled child
     255               0 :       nsIBox* deepChild = nsGrid::GetScrolledBox(child);
     256                 : 
     257               0 :       nsIGridPart* monument = nsGrid::GetPartFromBox(deepChild);
     258               0 :       if (monument) {
     259               0 :         rowCount += monument->BuildRows(deepChild, &aRows[rowCount]);
     260               0 :         child = child->GetNextBox();
     261               0 :         deepChild = child;
     262               0 :         continue;
     263                 :       }
     264                 : 
     265               0 :       aRows[rowCount].Init(child, true);
     266                 : 
     267               0 :       child = child->GetNextBox();
     268                 : 
     269                 :       // if not a monument. Then count it. It will be a bogus row
     270               0 :       rowCount++;
     271                 :     }
     272                 :   }
     273                 : 
     274               0 :   return rowCount;
     275                 : }
     276                 : 
     277                 : nsMargin
     278               0 : nsGridRowGroupLayout::GetTotalMargin(nsIBox* aBox, bool aIsHorizontal)
     279                 : {
     280                 :   // group have border and padding added to the total margin
     281                 : 
     282               0 :   nsMargin margin = nsGridRowLayout::GetTotalMargin(aBox, aIsHorizontal);
     283                 :   
     284                 :   // make sure we have the scrollframe on the outside if it has one.
     285                 :   // that's where the border is.
     286               0 :   aBox = nsGrid::GetScrollBox(aBox);
     287                 : 
     288                 :   // add our border/padding to it
     289               0 :   nsMargin borderPadding(0,0,0,0);
     290               0 :   aBox->GetBorderAndPadding(borderPadding);
     291               0 :   margin += borderPadding;
     292                 : 
     293                 :   return margin;
     294                 : }
     295                 : 
     296                 : 

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