1 /****************************************************************************
2 * Copyright 2020 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 1.33 2020/05/24 01:40:20 anonymous.maarten 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;
65 getyx(menu->win, item_y, item_x);
67 /* We need a marker iff
68 - it is a onevalued menu and it is the current item
69 - or it has a selection value
71 wattron(menu->win, (int)menu->back);
72 if (item->value || (item == menu->curitem))
76 /* In a multi selection menu we use the fore attribute
77 for a selected marker that is not the current one.
78 This improves visualization of the menu, because now
79 always the 'normal' marker denotes the current
81 if (!(menu->opt & O_ONEVALUE) && item->value && item != menu->curitem)
83 wattron(menu->win, (int)menu->fore);
86 waddstr(menu->win, menu->mark);
89 wattron(menu->win, (int)menu->fore);
94 else /* otherwise we have to wipe out the marker area */
95 for (ch = ' ', i = menu->marklen; i > 0; i--)
96 waddch(menu->win, ch);
97 wattroff(menu->win, (int)menu->back);
98 count += menu->marklen;
100 /* First we have to calculate the attribute depending on selectability
103 if (!(item->opt & O_SELECTABLE))
105 wattron(menu->win, (int)menu->grey);
110 if (item->value || item == menu->curitem)
112 wattron(menu->win, (int)menu->fore);
117 wattron(menu->win, (int)menu->back);
122 waddnstr(menu->win, item->name.str, item->name.length);
123 name_len = _nc_Calculate_Text_Width(&(item->name));
124 for (ch = ' ', i = menu->namelen - name_len; i > 0; i--)
126 waddch(menu->win, ch);
128 count += menu->namelen;
130 /* Show description if required and available */
131 if ((menu->opt & O_SHOWDESC) && menu->desclen > 0)
133 int m = menu->spc_desc / 2;
134 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];
204 ITEM *lasthor, *lastvert;
209 assert(item && menu->win);
211 s_bkgd = getbkgd(menu->win);
212 wbkgdset(menu->win, menu->back);
214 wbkgdset(menu->win, s_bkgd);
216 lastvert = (menu->opt & O_NONCYCLIC) ? (ITEM *) 0 : item;
220 wmove(menu->win, y, 0);
223 lasthor = (menu->opt & O_NONCYCLIC) ? (ITEM *) 0 : hitem;
227 _nc_Post_Item(menu, hitem);
229 wattron(menu->win, (int)menu->back);
230 if (((hitem = hitem->right) != lasthor) && hitem)
235 getyx(menu->win, cy, cx);
236 for (j = 0; j < menu->spc_rows; j++)
238 wmove(menu->win, cy + j, cx);
239 for (i = 0; i < menu->spc_cols; i++)
241 waddch(menu->win, ch);
244 wmove(menu->win, cy, cx + menu->spc_cols);
247 while (hitem && (hitem != lasthor));
248 wattroff(menu->win, (int)menu->back);
254 while (item && (item != lastvert));
257 /*---------------------------------------------------------------------------
258 | Facility : libnmenu
259 | Function : int post_menu(MENU* menu)
261 | Description : Post a menu to the screen. This makes it visible.
263 | Return Values : E_OK - success
264 | E_BAD_ARGUMENT - not a valid menu pointer
265 | E_SYSTEM_ERROR - error in lower layers
266 | E_NOT_CONNECTED - No items connected to menu
267 | E_BAD_STATE - Menu in userexit routine
268 | E_POSTED - Menu already posted
269 +--------------------------------------------------------------------------*/
271 post_menu(MENU * menu)
273 T((T_CALLED("post_menu(%p)"), (void *)menu));
276 RETURN(E_BAD_ARGUMENT);
278 if (menu->status & _IN_DRIVER)
281 if (menu->status & _POSTED)
284 if (menu->items && *(menu->items))
287 int h = 1 + menu->spc_rows * (menu->rows - 1);
289 WINDOW *win = Get_Menu_Window(menu);
290 int maxy = getmaxy(win);
292 if ((menu->win = newpad(h, menu->width)))
294 y = (maxy >= h) ? h : maxy;
295 if (y >= menu->height)
297 if (!(menu->sub = subpad(menu->win, y, menu->width, 0, 0)))
298 RETURN(E_SYSTEM_ERROR);
301 RETURN(E_SYSTEM_ERROR);
303 if (menu->status & _LINK_NEEDED)
304 _nc_Link_Items(menu);
307 RETURN(E_NOT_CONNECTED);
309 SetStatus(menu, _POSTED);
311 if (!(menu->opt & O_ONEVALUE))
315 for (items = menu->items; *items; items++)
317 (*items)->value = FALSE;
323 Call_Hook(menu, menuinit);
324 Call_Hook(menu, iteminit);
331 /*---------------------------------------------------------------------------
332 | Facility : libnmenu
333 | Function : int unpost_menu(MENU*)
335 | Description : Detach menu from screen
337 | Return Values : E_OK - success
338 | E_BAD_ARGUMENT - not a valid menu pointer
339 | E_BAD_STATE - menu in userexit routine
340 | E_NOT_POSTED - menu is not posted
341 +--------------------------------------------------------------------------*/
343 unpost_menu(MENU * menu)
347 T((T_CALLED("unpost_menu(%p)"), (void *)menu));
350 RETURN(E_BAD_ARGUMENT);
352 if (menu->status & _IN_DRIVER)
355 if (!(menu->status & _POSTED))
356 RETURN(E_NOT_POSTED);
358 Call_Hook(menu, itemterm);
359 Call_Hook(menu, menuterm);
361 win = Get_Menu_Window(menu);
367 menu->sub = (WINDOW *)0;
371 menu->win = (WINDOW *)0;
373 ClrStatus(menu, _POSTED);
378 /* m_post.c ends here */