1 /****************************************************************************
2 * Copyright 2020-2021,2022 Thomas E. Dickey *
3 * Copyright 1998-2010,2012 Free Software Foundation, Inc. *
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6 * copy of this software and associated documentation files (the *
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28 ****************************************************************************/
30 /****************************************************************************
31 * Author: Juergen Pfeifer, 1995,1997 *
32 ****************************************************************************/
34 /***************************************************************************
36 * Write or erase menus from associated subwindows *
37 ***************************************************************************/
39 #include "menu.priv.h"
41 MODULE_ID("$Id: m_post.c,v 1.38 2022/09/24 09:38:44 tom Exp $")
43 /*---------------------------------------------------------------------------
45 | Function : void _nc_Post_Item(MENU *menu, ITEM *item)
47 | Description : Draw the item in the menus window at the current
51 +--------------------------------------------------------------------------*/
53 _nc_Post_Item(const MENU *menu, const ITEM *item)
59 bool isfore = FALSE, isback = FALSE, isgrey = FALSE;
64 getyx(menu->win, item_y, item_x);
66 /* We need a marker iff
67 - it is a onevalued menu and it is the current item
68 - or it has a selection value
70 wattron(menu->win, (int)menu->back);
71 if (item->value || (item == menu->curitem))
75 /* In a multi selection menu we use the fore attribute
76 for a selected marker that is not the current one.
77 This improves visualization of the menu, because now
78 always the 'normal' marker denotes the current
80 if (!(menu->opt & O_ONEVALUE) && item->value && item != menu->curitem)
82 wattron(menu->win, (int)menu->fore);
85 waddstr(menu->win, menu->mark);
88 wattron(menu->win, (int)menu->fore);
93 else /* otherwise we have to wipe out the marker area */
94 for (ch = ' ', i = menu->marklen; i > 0; i--)
95 waddch(menu->win, ch);
96 wattroff(menu->win, (int)menu->back);
97 count += menu->marklen;
99 /* First we have to calculate the attribute depending on selectability
102 if (!(item->opt & O_SELECTABLE))
104 wattron(menu->win, (int)menu->grey);
109 if (item->value || item == menu->curitem)
111 wattron(menu->win, (int)menu->fore);
116 wattron(menu->win, (int)menu->back);
121 waddnstr(menu->win, item->name.str, item->name.length);
122 name_len = _nc_Calculate_Text_Width(&(item->name));
123 for (ch = ' ', i = menu->namelen - name_len; i > 0; i--)
125 waddch(menu->win, ch);
127 count += menu->namelen;
129 /* Show description if required and available */
130 if ((menu->opt & O_SHOWDESC) && menu->desclen > 0)
132 int m = menu->spc_desc / 2;
133 int cy = -1, cx = -1;
136 for (ch = ' ', i = 0; i < menu->spc_desc; i++)
140 waddch(menu->win, menu->pad);
141 getyx(menu->win, cy, cx);
144 waddch(menu->win, ch);
146 if (item->description.length)
147 waddnstr(menu->win, item->description.str, item->description.length);
148 desc_len = _nc_Calculate_Text_Width(&(item->description));
149 for (ch = ' ', i = menu->desclen - desc_len; i > 0; i--)
151 waddch(menu->win, ch);
153 count += menu->desclen + menu->spc_desc;
155 if (menu->spc_rows > 1)
159 assert(cx >= 0 && cy >= 0);
160 getyx(menu->win, ncy, ncx);
162 wattroff(menu->win, (int)menu->grey);
164 wattroff(menu->win, (int)menu->fore);
165 wattron(menu->win, (int)menu->back);
166 for (j = 1; j < menu->spc_rows; j++)
168 if ((item_y + j) < getmaxy(menu->win))
170 wmove(menu->win, item_y + j, item_x);
171 for (k = 0; k < count; k++)
172 waddch(menu->win, ' ');
174 if ((cy + j) < getmaxy(menu->win))
175 (void)mvwaddch(menu->win, cy + j, cx - 1, menu->pad);
177 wmove(menu->win, ncy, ncx);
179 wattroff(menu->win, (int)menu->back);
183 /* Remove attributes */
185 wattroff(menu->win, (int)menu->fore);
187 wattroff(menu->win, (int)menu->back);
189 wattroff(menu->win, (int)menu->grey);
192 /*---------------------------------------------------------------------------
193 | Facility : libnmenu
194 | Function : void _nc_Draw_Menu(const MENU *)
196 | Description : Display the menu in its windows
199 +--------------------------------------------------------------------------*/
201 _nc_Draw_Menu(const MENU *menu)
203 ITEM *item = menu->items[0];
208 assert(item && menu->win);
210 s_bkgd = getbkgd(menu->win);
211 wbkgdset(menu->win, menu->back);
213 wbkgdset(menu->win, s_bkgd);
215 lastvert = (menu->opt & O_NONCYCLIC) ? (ITEM *)0 : item;
225 wmove(menu->win, y, 0);
228 lasthor = (menu->opt & O_NONCYCLIC) ? (ITEM *)0 : hitem;
232 _nc_Post_Item(menu, hitem);
234 wattron(menu->win, (int)menu->back);
235 if (((hitem = hitem->right) != lasthor) && hitem)
240 getyx(menu->win, cy, cx);
241 for (j = 0; j < menu->spc_rows; j++)
243 wmove(menu->win, cy + j, cx);
244 for (i = 0; i < menu->spc_cols; i++)
246 waddch(menu->win, ch);
249 wmove(menu->win, cy, cx + menu->spc_cols);
252 while (hitem && (hitem != lasthor));
253 wattroff(menu->win, (int)menu->back);
259 while (item && (item != lastvert));
263 /*---------------------------------------------------------------------------
264 | Facility : libnmenu
265 | Function : int post_menu(MENU* menu)
267 | Description : Post a menu to the screen. This makes it visible.
269 | Return Values : E_OK - success
270 | E_BAD_ARGUMENT - not a valid menu pointer
271 | E_SYSTEM_ERROR - error in lower layers
272 | E_NOT_CONNECTED - No items connected to menu
273 | E_BAD_STATE - Menu in userexit routine
274 | E_POSTED - Menu already posted
275 +--------------------------------------------------------------------------*/
277 post_menu(MENU *menu)
279 T((T_CALLED("post_menu(%p)"), (void *)menu));
282 RETURN(E_BAD_ARGUMENT);
284 if (menu->status & _IN_DRIVER)
287 if (menu->status & _POSTED)
290 if (menu->items && *(menu->items))
292 int h = 1 + menu->spc_rows * (menu->rows - 1);
294 WINDOW *win = Get_Menu_Window(menu);
295 int maxy = getmaxy(win);
297 if ((menu->win = newpad(h, menu->width)))
299 int y = (maxy >= h) ? h : maxy;
301 if (y >= menu->height)
303 if (!(menu->sub = subpad(menu->win, y, menu->width, 0, 0)))
304 RETURN(E_SYSTEM_ERROR);
307 RETURN(E_SYSTEM_ERROR);
309 if (menu->status & _LINK_NEEDED)
310 _nc_Link_Items(menu);
313 RETURN(E_NOT_CONNECTED);
315 SetStatus(menu, _POSTED);
317 if (!(menu->opt & O_ONEVALUE))
321 for (items = menu->items; *items; items++)
323 (*items)->value = FALSE;
329 Call_Hook(menu, menuinit);
330 Call_Hook(menu, iteminit);
337 /*---------------------------------------------------------------------------
338 | Facility : libnmenu
339 | Function : int unpost_menu(MENU*)
341 | Description : Detach menu from screen
343 | Return Values : E_OK - success
344 | E_BAD_ARGUMENT - not a valid menu pointer
345 | E_BAD_STATE - menu in userexit routine
346 | E_NOT_POSTED - menu is not posted
347 +--------------------------------------------------------------------------*/
349 unpost_menu(MENU *menu)
353 T((T_CALLED("unpost_menu(%p)"), (void *)menu));
356 RETURN(E_BAD_ARGUMENT);
358 if (menu->status & _IN_DRIVER)
361 if (!(menu->status & _POSTED))
362 RETURN(E_NOT_POSTED);
364 Call_Hook(menu, itemterm);
365 Call_Hook(menu, menuterm);
367 win = Get_Menu_Window(menu);
373 menu->sub = (WINDOW *)0;
377 menu->win = (WINDOW *)0;
379 ClrStatus(menu, _POSTED);
384 /* m_post.c ends here */