projects / wxWidgets.git / blame
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|---|---|---|
| e421922f VZ |
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> | |
| 65571936 | 9 | // License: wxWindows licence |
| e421922f VZ |
10 | /////////////////////////////////////////////////////////////////////////////// |
| 11 | ||
| 12 | // ============================================================================ | |
| 13 | // declarations | |
| 14 | // ============================================================================ | |
| 15 | ||
| 16 | // ---------------------------------------------------------------------------- | |
| 17 | // headers | |
| 18 | // ---------------------------------------------------------------------------- | |
| 19 | ||
| 14f355c2 | 20 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) |
| e421922f VZ |
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::GetNextItem(int item, wxDirection dir, long style) const | |
| 42 | { | |
| 43 | int count = GetCount(), | |
| 44 | numCols = GetColumnCount(), | |
| 45 | numRows = GetRowCount(); | |
| 46 | ||
| 47 | bool horz = (style & wxRA_SPECIFY_COLS) != 0; | |
| 48 | ||
| 49 | switch ( dir ) | |
| 50 | { | |
| 51 | case wxUP: | |
| 52 | if ( horz ) | |
| 53 | { | |
| 54 | item -= numCols; | |
| 55 | } | |
| 56 | else // vertical layout | |
| 57 | { | |
| 58 | if ( !item-- ) | |
| 59 | item = count - 1; | |
| 60 | } | |
| 61 | break; | |
| 62 | ||
| 63 | case wxLEFT: | |
| 64 | if ( horz ) | |
| 65 | { | |
| 66 | if ( !item-- ) | |
| 67 | item = count - 1; | |
| 68 | } | |
| 69 | else // vertical layout | |
| 70 | { | |
| 71 | item -= numRows; | |
| 72 | } | |
| 73 | break; | |
| 74 | ||
| 75 | case wxDOWN: | |
| 76 | if ( horz ) | |
| 77 | { | |
| 78 | item += numCols; | |
| 79 | } | |
| 80 | else // vertical layout | |
| 81 | { | |
| 82 | if ( ++item == count ) | |
| 83 | item = 0; | |
| 84 | } | |
| 85 | break; | |
| 86 | ||
| 87 | case wxRIGHT: | |
| 88 | if ( horz ) | |
| 89 | { | |
| 90 | if ( ++item == count ) | |
| 91 | item = 0; | |
| 92 | } | |
| 93 | else // vertical layout | |
| 94 | { | |
| 95 | item += numRows; | |
| 96 | } | |
| 97 | break; | |
| 98 | ||
| 99 | default: | |
| 100 | wxFAIL_MSG( _T("unexpected wxDirection value") ); | |
| 701a0b47 | 101 | return wxNOT_FOUND; |
| e421922f VZ |
102 | } |
| 103 | ||
| 104 | // ensure that the item is in range [0..count) | |
| 105 | if ( item < 0 ) | |
| 106 | { | |
| 107 | // first map the item to the one in the same column but in the last row | |
| 108 | item += count; | |
| 109 | ||
| 110 | // now there are 2 cases: either it is the first item of the last row | |
| 111 | // in which case we need to wrap again and get to the last item or we | |
| 112 | // can just go to the previous item | |
| 113 | if ( item % (horz ? numCols : numRows) ) | |
| 114 | item--; | |
| 115 | else | |
| 116 | item = count - 1; | |
| 117 | } | |
| 118 | else if ( item >= count ) | |
| 119 | { | |
| 120 | // same logic as above | |
| 121 | item -= count; | |
| 122 | ||
| 123 | // ... except that we need to check if this is not the last item, not | |
| 124 | // the first one | |
| 125 | if ( (item + 1) % (horz ? numCols : numRows) ) | |
| 126 | item++; | |
| 127 | else | |
| 128 | item = 0; | |
| 129 | } | |
| 130 | ||
| 131 | wxASSERT_MSG( item < count && item >= 0, | |
| 132 | _T("logic error in wxRadioBox::GetNextItem()") ); | |
| 133 | ||
| 134 | return item; | |
| 135 | } | |
| 136 | ||
| 137 | #endif // wxUSE_RADIOBOX | |
| 138 |