Microline/XmL/GridUtil.c

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  16  * The Original Code is the Microline Widget Library, originally made available under the NPL by Neuron Data <http://www.neurondata.com>.
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  48
  49 /*----------------------------------------------------------------------*/
  50 /*                                                                                                                                              */
  51 /* Name:                <XmL/GridUtil.c>                                                                                */
  52 /*                                                                                                                                              */
  53 /* Description: XmLGrid misc utilities.  They are here in order not to  */
  54 /*                  continue bloating Grid.c beyond hope.                                       */
  55 /*                                                                                                                                              */
  56 /* Author:              Ramiro Estrugo <ramiro@netscape.com>                                    */
  57 /*                                                                                                                                              */
  58 /* Created:     Thu May 28 21:55:45 PDT 1998                                                    */
  59 /*                                                                                                                                              */
  60 /*----------------------------------------------------------------------*/
  61
  62 #include "GridP.h"
  63
  64 #include <assert.h>
  65
  66 /*----------------------------------------------------------------------*/
  67 /* extern */ int
  68 XmLGridGetRowCount(Widget w)
  69 {
  70         XmLGridWidget g = (XmLGridWidget) w;
  71
  72         assert( g != NULL );
  73
  74 #ifdef DEBUG_ramiro
  75         {
  76                 int rows = 0;
  77
  78                 XtVaGetValues(w,XmNrows,&rows,NULL);
  79
  80                 assert( rows == g->grid.rowCount );
  81         }
  82 #endif
  83
  84         return g->grid.rowCount;
  85 }
  86 /*----------------------------------------------------------------------*/
  87 /* extern */ int
  88 XmLGridGetColumnCount(Widget w)
  89 {
  90         XmLGridWidget g = (XmLGridWidget) w;
  91
  92         assert( g != NULL );
  93
  94 #ifdef DEBUG_ramiro
  95         {
  96                 int columns = 0;
  97
  98                 XtVaGetValues(w,XmNcolumns,&columns,NULL);
  99
 100                 assert( columns == g->grid.colCount );
 101         }
 102 #endif
 103
 104         return g->grid.colCount;
 105 }
 106 /*----------------------------------------------------------------------*/
 107 /* extern */ void
 108 XmLGridXYToCellTracking(Widget                  widget,
 109                                                 int                             x, /* input only args. */
 110                                                 int                             y, /* input only args. */
 111                                                 Boolean *               m_inGrid, /* input/output args. */
 112                                                 int *                   m_lastRow, /* input/output args. */
 113                                                 int *                   m_lastCol, /* input/output args. */
 114                                                 unsigned char * m_lastRowtype, /* input/output args. */
 115                                                 unsigned char * m_lastColtype,/* input/output args. */
 116                                                 int *                   outRow, /* output only args. */
 117                                                 int *                   outCol, /* output only args. */
 118                                                 Boolean *               enter, /* output only args. */
 119                                                 Boolean *               leave) /* output only args. */
 120 {
 121         int                             m_totalLines = 0;
 122         int                             m_numcolumns = 0;
 123         int                             row = 0;
 124         int                             column = 0;
 125         unsigned char   rowtype = XmCONTENT;
 126         unsigned char   coltype = XmCONTENT;
 127
 128         if (0 > XmLGridXYToRowColumn(widget,
 129                                                                  x,
 130                                                                  y,
 131                                                                  &rowtype,
 132                                                                  &row,
 133                                                                  &coltype,
 134                                                                  &column))
 135         {
 136                 /* In grid; but, not in any cells
 137                  */
 138                 /* treat it as a leave
 139                  */
 140                 *enter = FALSE;
 141                 *leave = TRUE;
 142                 return;
 143         }/* if */
 144
 145         m_totalLines = XmLGridGetRowCount(widget);
 146         m_numcolumns = XmLGridGetColumnCount(widget);
 147
 148         if ((row < m_totalLines) &&
 149                 (column < m_numcolumns) &&
 150                 ((*m_lastRow != row)||
 151                  (*m_lastCol != column) ||
 152                  (*m_lastRowtype != rowtype)||
 153                  (*m_lastColtype != coltype)))
 154         {
 155                 *outRow = (rowtype == XmHEADING)?-1:row;
 156                 *outCol = column;
 157
 158                 if (*m_inGrid == False)
 159                 {
 160                         *m_inGrid = True;
 161
 162                         /* enter a cell
 163                          */
 164                         *enter = TRUE;
 165                         *leave = FALSE;
 166
 167                 }/* if */
 168                 else
 169                 {
 170                         /* Cruising among cells
 171                          */
 172                         *enter = TRUE;
 173                         *leave = TRUE;
 174                 }/* else */
 175                 *m_lastRow = row;
 176                 *m_lastCol = column;
 177                 *m_lastRowtype = rowtype ;
 178                 *m_lastColtype  = coltype ;
 179         }/* row /col in grid */
 180 }
 181 /*----------------------------------------------------------------------*/