contrib/ncurses/menu/m_attribs.c

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  28
  29 /****************************************************************************
  30  *   Author:  Juergen Pfeifer, 1995,1997                                    *
  31  ****************************************************************************/
  32
  33 /***************************************************************************
  34 * Module m_attribs                                                         *
  35 * Control menus display attributes                                         *
  36 ***************************************************************************/
  37
  38 #include "menu.priv.h"
  39
  40 MODULE_ID("$Id: m_attribs.c,v 1.14 2004/12/11 23:29:12 tom Exp $")
  41
  42 /* Macro to redraw menu if it is posted and changed */
  43 #define Refresh_Menu(menu) \
  44    if ( (menu) && ((menu)->status & _POSTED) )\
  45    {\
  46       _nc_Draw_Menu( menu );\
  47       _nc_Show_Menu( menu );\
  48    }
  49
  50 /* "Template" macro to generate a function to set a menus attribute */
  51 #define GEN_MENU_ATTR_SET_FCT( name ) \
  52 NCURSES_IMPEXP int NCURSES_API set_menu_ ## name (MENU * menu, chtype attr)\
  53 {\
  54    T((T_CALLED("set_menu_" #name "(%p,%s)"), menu, _traceattr(attr)));\
  55    if (!(attr==A_NORMAL || (attr & A_ATTRIBUTES)==attr))\
  56       RETURN(E_BAD_ARGUMENT);\
  57    if (menu && ( menu -> name != attr))\
  58      {\
  59        (menu -> name) = attr;\
  60        Refresh_Menu(menu);\
  61      }\
  62    Normalize_Menu( menu ) -> name = attr;\
  63    RETURN(E_OK);\
  64 }
  65
  66 /* "Template" macro to generate a function to get a menu's attribute */
  67 #define GEN_MENU_ATTR_GET_FCT( name ) \
  68 NCURSES_IMPEXP chtype NCURSES_API menu_ ## name (const MENU * menu)\
  69 {\
  70    T((T_CALLED("menu_" #name "(%p)"), menu));\
  71    returnAttr(Normalize_Menu( menu ) -> name);\
  72 }
  73
  74 /*---------------------------------------------------------------------------
  75 |   Facility      :  libnmenu
  76 |   Function      :  int set_menu_fore(MENU *menu, chtype attr)
  77 |
  78 |   Description   :  Set the attribute for selectable items. In single-
  79 |                    valued menus this is used to highlight the current
  80 |                    item ((i.e. where the cursor is), in multi-valued
  81 |                    menus this is used to highlight the selected items.
  82 |
  83 |   Return Values :  E_OK              - success
  84 |                    E_BAD_ARGUMENT    - an invalid value has been passed
  85 +--------------------------------------------------------------------------*/
  86 GEN_MENU_ATTR_SET_FCT(fore)
  87
  88 /*---------------------------------------------------------------------------
  89 |   Facility      :  libnmenu
  90 |   Function      :  chtype menu_fore(const MENU* menu)
  91 |
  92 |   Description   :  Return the attribute used for selectable items that
  93 |                    are current (single-valued menu) or selected (multi-
  94 |                    valued menu).
  95 |
  96 |   Return Values :  Attribute value
  97 +--------------------------------------------------------------------------*/
  98 GEN_MENU_ATTR_GET_FCT(fore)
  99
 100 /*---------------------------------------------------------------------------
 101 |   Facility      :  libnmenu
 102 |   Function      :  int set_menu_back(MENU *menu, chtype attr)
 103 |
 104 |   Description   :  Set the attribute for selectable but not yet selected
 105 |                    items.
 106 |
 107 |   Return Values :  E_OK             - success
 108 |                    E_BAD_ARGUMENT   - an invalid value has been passed
 109 +--------------------------------------------------------------------------*/
 110 GEN_MENU_ATTR_SET_FCT(back)
 111
 112 /*---------------------------------------------------------------------------
 113 |   Facility      :  libnmenu
 114 |   Function      :  chtype menu_back(const MENU *menu)
 115 |
 116 |   Description   :  Return the attribute used for selectable but not yet
 117 |                    selected items.
 118 |
 119 |   Return Values :  Attribute value
 120 +--------------------------------------------------------------------------*/
 121 GEN_MENU_ATTR_GET_FCT(back)
 122
 123 /*---------------------------------------------------------------------------
 124 |   Facility      :  libnmenu
 125 |   Function      :  int set_menu_grey(MENU *menu, chtype attr)
 126 |
 127 |   Description   :  Set the attribute for unselectable items.
 128 |
 129 |   Return Values :  E_OK             - success
 130 |                    E_BAD_ARGUMENT   - an invalid value has been passed
 131 +--------------------------------------------------------------------------*/
 132 GEN_MENU_ATTR_SET_FCT(grey)
 133
 134 /*---------------------------------------------------------------------------
 135 |   Facility      :  libnmenu
 136 |   Function      :  chtype menu_grey(const MENU *menu)
 137 |
 138 |   Description   :  Return the attribute used for non-selectable items
 139 |
 140 |   Return Values :  Attribute value
 141 +--------------------------------------------------------------------------*/
 142 GEN_MENU_ATTR_GET_FCT(grey)
 143 /* m_attribs.c ends here */