src/common/radiocmn.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/radiocmn.cpp
   3 // Purpose:     wxRadioBox methods common to all ports
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     03.06.01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // License:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "radioboxbase.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_RADIOBOX
  32
  33 #ifndef WX_PRECOMP
  34     #include "wx/radiobox.h"
  35 #endif //WX_PRECOMP
  36
  37 // ============================================================================
  38 // implementation
  39 // ============================================================================
  40
  41 int wxRadioBoxBase::FindString(const wxString& s) const
  42 {
  43     int count = GetCount();
  44     for ( int n = 0; n < count; n++ )
  45     {
  46         if ( GetString(n) == s )
  47             return n;
  48     }
  49
  50     return wxNOT_FOUND;
  51 }
  52
  53 int wxRadioBoxBase::GetNextItem(int item, wxDirection dir, long style) const
  54 {
  55     int count = GetCount(),
  56         numCols = GetColumnCount(),
  57         numRows = GetRowCount();
  58
  59     bool horz = (style & wxRA_SPECIFY_COLS) != 0;
  60
  61     switch ( dir )
  62     {
  63         case wxUP:
  64             if ( horz )
  65             {
  66                 item -= numCols;
  67             }
  68             else // vertical layout
  69             {
  70                 if ( !item-- )
  71                     item = count - 1;
  72             }
  73             break;
  74
  75         case wxLEFT:
  76             if ( horz )
  77             {
  78                 if ( !item-- )
  79                     item = count - 1;
  80             }
  81             else // vertical layout
  82             {
  83                 item -= numRows;
  84             }
  85             break;
  86
  87         case wxDOWN:
  88             if ( horz )
  89             {
  90                 item += numCols;
  91             }
  92             else // vertical layout
  93             {
  94                 if ( ++item == count )
  95                     item = 0;
  96             }
  97             break;
  98
  99         case wxRIGHT:
 100             if ( horz )
 101             {
 102                 if ( ++item == count )
 103                     item = 0;
 104             }
 105             else // vertical layout
 106             {
 107                 item += numRows;
 108             }
 109             break;
 110
 111         default:
 112             wxFAIL_MSG( _T("unexpected wxDirection value") );
 113             return wxNOT_FOUND;
 114     }
 115
 116     // ensure that the item is in range [0..count)
 117     if ( item < 0 )
 118     {
 119         // first map the item to the one in the same column but in the last row
 120         item += count;
 121
 122         // now there are 2 cases: either it is the first item of the last row
 123         // in which case we need to wrap again and get to the last item or we
 124         // can just go to the previous item
 125         if ( item % (horz ? numCols : numRows) )
 126             item--;
 127         else
 128             item = count - 1;
 129     }
 130     else if ( item >= count )
 131     {
 132         // same logic as above
 133         item -= count;
 134
 135         // ... except that we need to check if this is not the last item, not
 136         // the first one
 137         if ( (item + 1) % (horz ? numCols : numRows) )
 138             item++;
 139         else
 140             item = 0;
 141     }
 142
 143     wxASSERT_MSG( item < count && item >= 0,
 144                   _T("logic error in wxRadioBox::GetNextItem()") );
 145
 146     return item;
 147 }
 148
 149 #if WXWIN_COMPATIBILITY_2_4
 150
 151 // these functions are deprecated and don't do anything
 152 int wxRadioBoxBase::GetNumberOfRowsOrCols() const
 153 {
 154     return 1;
 155 }
 156
 157 void wxRadioBoxBase::SetNumberOfRowsOrCols(int WXUNUSED(n))
 158 {
 159 }
 160
 161 #endif // WXWIN_COMPATIBILITY_2_4
 162
 163 #if WXWIN_COMPATIBILITY_2_2
 164
 165 int wxRadioBoxBase::Number() const
 166 {
 167     return GetCount();
 168 }
 169
 170 wxString wxRadioBoxBase::GetLabel(int n) const
 171 {
 172     return GetString(n);
 173 }
 174
 175 void wxRadioBoxBase::SetLabel(int n, const wxString& label)
 176 {
 177     SetString(n, label);
 178 }
 179
 180 #endif // WXWIN_COMPATIBILITY_2_2
 181
 182 #endif // wxUSE_RADIOBOX
 183