xref: /freebsd/contrib/ncurses/menu/m_attribs.c (revision 41466b50c1d5bfd1cf6adaae547a579a75d7c04e)
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28 
29 /****************************************************************************
30  *   Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 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 1.9 2000/12/10 02:16:48 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    if (!(attr==A_NORMAL || (attr & A_ATTRIBUTES)==attr))\
55       RETURN(E_BAD_ARGUMENT);\
56    if (menu && ( menu -> name != attr))\
57      {\
58        (menu -> name) = attr;\
59        Refresh_Menu(menu);\
60      }\
61    Normalize_Menu( menu ) -> name = attr;\
62    RETURN(E_OK);\
63 }
64 
65 /* "Template" macro to generate a function to get a menus attribute */
66 #define GEN_MENU_ATTR_GET_FCT( name ) \
67 NCURSES_IMPEXP chtype NCURSES_API menu_ ## name (const MENU * menu)\
68 {\
69    return (Normalize_Menu( menu ) -> name);\
70 }
71 
72 /*---------------------------------------------------------------------------
73 |   Facility      :  libnmenu
74 |   Function      :  int set_menu_fore(MENU *menu, chtype attr)
75 |
76 |   Description   :  Set the attribute for selectable items. In single-
77 |                    valued menus thiis is used to highlight the current
78 |                    item ((i.e. where the cursor is), in multi-valued
79 |                    menus this is used to highlight the selected items.
80 |
81 |   Return Values :  E_OK              - success
82 |                    E_BAD_ARGUMENT    - an invalid value has been passed
83 +--------------------------------------------------------------------------*/
84 GEN_MENU_ATTR_SET_FCT( fore )
85 
86 /*---------------------------------------------------------------------------
87 |   Facility      :  libnmenu
88 |   Function      :  chtype menu_fore(const MENU* menu)
89 |
90 |   Description   :  Return the attribute used for selectable items that
91 |                    are current (single-valued menu) or selected (multi-
92 |                    valued menu).
93 |
94 |   Return Values :  Attribute value
95 +--------------------------------------------------------------------------*/
96 GEN_MENU_ATTR_GET_FCT( fore )
97 
98 /*---------------------------------------------------------------------------
99 |   Facility      :  libnmenu
100 |   Function      :  int set_menu_back(MENU *menu, chtype attr)
101 |
102 |   Description   :  Set the attribute for selectable but not yet selected
103 |                    items.
104 |
105 |   Return Values :  E_OK             - success
106 |                    E_BAD_ARGUMENT   - an invalid value has been passed
107 +--------------------------------------------------------------------------*/
108 GEN_MENU_ATTR_SET_FCT( back )
109 
110 /*---------------------------------------------------------------------------
111 |   Facility      :  libnmenu
112 |   Function      :  chtype menu_back(const MENU *menu)
113 |
114 |   Description   :  Return the attribute used for selectable but not yet
115 |                    selected items.
116 |
117 |   Return Values :  Attribute value
118 +--------------------------------------------------------------------------*/
119 GEN_MENU_ATTR_GET_FCT( back )
120 
121 /*---------------------------------------------------------------------------
122 |   Facility      :  libnmenu
123 |   Function      :  int set_menu_grey(MENU *menu, chtype attr)
124 |
125 |   Description   :  Set the attribute for unselectable items.
126 |
127 |   Return Values :  E_OK             - success
128 |                    E_BAD_ARGUMENT   - an invalid value has been passed
129 +--------------------------------------------------------------------------*/
130 GEN_MENU_ATTR_SET_FCT( grey )
131 
132 /*---------------------------------------------------------------------------
133 |   Facility      :  libnmenu
134 |   Function      :  chtype menu_grey(const MENU *menu)
135 |
136 |   Description   :  Return the attribute used for non-selectable items
137 |
138 |   Return Values :  Attribute value
139 +--------------------------------------------------------------------------*/
140 GEN_MENU_ATTR_GET_FCT( grey )
141 /* m_attribs.c ends here */
142