rosapps/dflat32/menu.h

   1 /* ------------ menu.h ------------- */
   2
   3 #ifndef MENU_H
   4 #define MENU_H
   5
   6 #define DF_MAXPULLDOWNS 15
   7 #define DF_MAXSELECTIONS 20
   8 #define DF_MAXCASCADES 3  /* nesting level of cascaded menus */
   9
  10 /* ----------- popdown menu selection structure
  11        one for each selection on a popdown menu --------- */
  12 struct DfPopDown {
  13     char *SelectionTitle;  /* title of the selection */
  14     int ActionId;          /* the command executed        */
  15     int Accelerator;       /* the accelerator key         */
  16     int Attrib;  /* DF_INACTIVE | DF_CHECKED | DF_TOGGLE | DF_CASCADED*/
  17     char *help;            /* Help mnemonic               */
  18 };
  19
  20 /* ----------- popdown menu structure
  21        one for each popdown menu on the menu bar -------- */
  22 typedef struct DfMenu {
  23     char *Title;           /* title on the menu bar       */
  24     void (*PrepMenu)(void *, struct DfMenu *); /* function  */
  25         char *StatusText;      /* text for the status bar     */
  26         int CascadeId;   /* command id of cascading selection */
  27     int Selection;         /* most recent selection       */
  28     struct DfPopDown Selections[DF_MAXSELECTIONS+1];
  29 } DF_MENU;
  30
  31 /* ----- one for each menu bar ----- */
  32 typedef struct DfMenuBar {
  33         int ActiveSelection;
  34         DF_MENU PullDown[DF_MAXPULLDOWNS+1];
  35 } DF_MBAR;
  36
  37 /* --------- macros to define a menu bar with
  38                  popdowns and selections ------------- */
  39 #define DF_SEPCHAR "\xc4"
  40 #define DF_DEFMENU(m) DF_MBAR m = {-1,{
  41 #define DF_POPDOWN(ttl,func,stat)     {ttl,func,stat,-1,0,{
  42 #define DF_CASCADED_POPDOWN(id,func)  {NULL,func,NULL,id,0,{
  43 #define DF_SELECTION(stxt,acc,id,attr)   {stxt,acc,id,attr,#acc},
  44 #define DF_SEPARATOR                     {DF_SEPCHAR},
  45 #define DF_ENDPOPDOWN                    {NULL}}},
  46 #define DF_ENDMENU                {(void *)-1} }};
  47
  48 /* -------- menu selection attributes -------- */
  49 #define DF_INACTIVE    1
  50 #define DF_CHECKED     2
  51 #define DF_TOGGLE      4
  52 #define DF_CASCADED    8
  53
  54 /* --------- the standard menus ---------- */
  55 extern DF_MBAR DfMainMenu;
  56 extern DF_MBAR DfSystemMenu;
  57 extern DF_MBAR *DfActiveMenuBar;
  58
  59 int DfMenuHeight(struct DfPopDown *);
  60 int DfMenuWidth(struct DfPopDown *);
  61
  62 #endif
  63