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+/****************************************************************************
+ * Copyright (c) 1998-2003,2004 Free Software Foundation, Inc. *
+ * *
+ * Permission is hereby granted, free of charge, to any person obtaining a *
+ * copy of this software and associated documentation files (the *
+ * "Software"), to deal in the Software without restriction, including *
+ * without limitation the rights to use, copy, modify, merge, publish, *
+ * distribute, distribute with modifications, sublicense, and/or sell *
+ * copies of the Software, and to permit persons to whom the Software is *
+ * furnished to do so, subject to the following conditions: *
+ * *
+ * The above copyright notice and this permission notice shall be included *
+ * in all copies or substantial portions of the Software. *
+ * *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
+ * *
+ * Except as contained in this notice, the name(s) of the above copyright *
+ * holders shall not be used in advertising or otherwise to promote the *
+ * sale, use or other dealings in this Software without prior written *
+ * authorization. *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Author: Juergen Pfeifer, 1995,1997 *
+ ****************************************************************************/
+
+/***************************************************************************
+* Module m_post *
+* Write or erase menus from associated subwindows *
+***************************************************************************/
+
+#include "menu.priv.h"
+
+MODULE_ID("$Id: m_post.c,v 1.26 2004/12/25 23:57:04 tom Exp $")
+
+/*---------------------------------------------------------------------------
+| Facility : libnmenu
+| Function : void _nc_Post_Item(MENU *menu, ITEM *item)
+|
+| Description : Draw the item in the menus window at the current
+| window position
+|
+| Return Values : -
++--------------------------------------------------------------------------*/
+NCURSES_EXPORT(void)
+_nc_Post_Item(const MENU * menu, const ITEM * item)
+{
+ int i;
+ chtype ch;
+ int item_x, item_y;
+ int count = 0;
+ bool isfore = FALSE, isback = FALSE, isgrey = FALSE;
+ int name_len;
+ int desc_len;
+
+ assert(menu->win);
+
+ getyx(menu->win, item_y, item_x);
+
+ /* We need a marker iff
+ - it is a onevalued menu and it is the current item
+ - or it has a selection value
+ */
+ wattron(menu->win, menu->back);
+ if (item->value || (item == menu->curitem))
+ {
+ if (menu->marklen)
+ {
+ /* In a multi selection menu we use the fore attribute
+ for a selected marker that is not the current one.
+ This improves visualization of the menu, because now
+ always the 'normal' marker denotes the current
+ item. */
+ if (!(menu->opt & O_ONEVALUE) && item->value && item != menu->curitem)
+ {
+ wattron(menu->win, menu->fore);
+ isfore = TRUE;
+ }
+ waddstr(menu->win, menu->mark);
+ if (isfore)
+ {
+ wattron(menu->win, menu->fore);
+ isfore = FALSE;
+ }
+ }
+ }
+ else /* otherwise we have to wipe out the marker area */
+ for (ch = ' ', i = menu->marklen; i > 0; i--)
+ waddch(menu->win, ch);
+ wattroff(menu->win, menu->back);
+ count += menu->marklen;
+
+ /* First we have to calculate the attribute depending on selectability
+ and selection status
+ */
+ if (!(item->opt & O_SELECTABLE))
+ {
+ wattron(menu->win, menu->grey);
+ isgrey = TRUE;
+ }
+ else
+ {
+ if (item->value || item == menu->curitem)
+ {
+ wattron(menu->win, menu->fore);
+ isfore = TRUE;
+ }
+ else
+ {
+ wattron(menu->win, menu->back);
+ isback = TRUE;
+ }
+ }
+
+ waddnstr(menu->win, item->name.str, item->name.length);
+ name_len = _nc_Calculate_Text_Width(&(item->name));
+ for (ch = ' ', i = menu->namelen - name_len; i > 0; i--)
+ {
+ waddch(menu->win, ch);
+ }
+ count += menu->namelen;
+
+ /* Show description if required and available */
+ if ((menu->opt & O_SHOWDESC) && menu->desclen > 0)
+ {
+ int m = menu->spc_desc / 2;
+ int cy = -1, cx = -1;
+
+ for (ch = ' ', i = 0; i < menu->spc_desc; i++)
+ {
+ if (i == m)
+ {
+ waddch(menu->win, menu->pad);
+ getyx(menu->win, cy, cx);
+ }
+ else
+ waddch(menu->win, ch);
+ }
+ if (item->description.length)
+ waddnstr(menu->win, item->description.str, item->description.length);
+ desc_len = _nc_Calculate_Text_Width(&(item->description));
+ for (ch = ' ', i = menu->desclen - desc_len; i > 0; i--)
+ {
+ waddch(menu->win, ch);
+ }
+ count += menu->desclen + menu->spc_desc;
+
+ if (menu->spc_rows > 1)
+ {
+ int j, k, ncy, ncx;
+
+ assert(cx >= 0 && cy >= 0);
+ getyx(menu->win, ncy, ncx);
+ if (isgrey)
+ wattroff(menu->win, menu->grey);
+ else if (isfore)
+ wattroff(menu->win, menu->fore);
+ wattron(menu->win, menu->back);
+ for (j = 1; j < menu->spc_rows; j++)
+ {
+ if ((item_y + j) < getmaxy(menu->win))
+ {
+ wmove(menu->win, item_y + j, item_x);
+ for (k = 0; k < count; k++)
+ waddch(menu->win, ' ');
+ }
+ if ((cy + j) < getmaxy(menu->win))
+ mvwaddch(menu->win, cy + j, cx - 1, menu->pad);
+ }
+ wmove(menu->win, ncy, ncx);
+ if (!isback)
+ wattroff(menu->win, menu->back);
+ }
+ }
+
+ /* Remove attributes */
+ if (isfore)
+ wattroff(menu->win, menu->fore);
+ if (isback)
+ wattroff(menu->win, menu->back);
+ if (isgrey)
+ wattroff(menu->win, menu->grey);
+}
+
+/*---------------------------------------------------------------------------
+| Facility : libnmenu
+| Function : void _nc_Draw_Menu(const MENU *)
+|
+| Description : Display the menu in its windows
+|
+| Return Values : -
++--------------------------------------------------------------------------*/
+NCURSES_EXPORT(void)
+_nc_Draw_Menu(const MENU * menu)
+{
+ ITEM *item = menu->items[0];
+ ITEM *lasthor, *lastvert;
+ ITEM *hitem;
+ int y = 0;
+ chtype s_bkgd;
+
+ assert(item && menu->win);
+
+ s_bkgd = getbkgd(menu->win);
+ wbkgdset(menu->win, menu->back);
+ werase(menu->win);
+ wbkgdset(menu->win, s_bkgd);
+
+ lastvert = (menu->opt & O_NONCYCLIC) ? (ITEM *) 0 : item;
+
+ do
+ {
+ wmove(menu->win, y, 0);
+
+ hitem = item;
+ lasthor = (menu->opt & O_NONCYCLIC) ? (ITEM *) 0 : hitem;
+
+ do
+ {
+ _nc_Post_Item(menu, hitem);
+
+ wattron(menu->win, menu->back);
+ if (((hitem = hitem->right) != lasthor) && hitem)
+ {
+ int i, j, cy, cx;
+ chtype ch = ' ';
+
+ getyx(menu->win, cy, cx);
+ for (j = 0; j < menu->spc_rows; j++)
+ {
+ wmove(menu->win, cy + j, cx);
+ for (i = 0; i < menu->spc_cols; i++)
+ {
+ waddch(menu->win, ch);
+ }
+ }
+ wmove(menu->win, cy, cx + menu->spc_cols);
+ }
+ }
+ while (hitem && (hitem != lasthor));
+ wattroff(menu->win, menu->back);
+
+ item = item->down;
+ y += menu->spc_rows;
+
+ }
+ while (item && (item != lastvert));
+}
+
+/*---------------------------------------------------------------------------
+| Facility : libnmenu
+| Function : int post_menu(MENU *)
+|
+| Description : Post a menu to the screen. This makes it visible.
+|
+| Return Values : E_OK - success
+| E_BAD_ARGUMENT - not a valid menu pointer
+| E_SYSTEM_ERROR - error in lower layers
+| E_NOT_CONNECTED - No items connected to menu
+| E_BAD_STATE - Menu in userexit routine
+| E_POSTED - Menu already posted
++--------------------------------------------------------------------------*/
+NCURSES_EXPORT(int)
+post_menu(MENU * menu)
+{
+ T((T_CALLED("post_menu(%p)"), menu));
+
+ if (!menu)
+ RETURN(E_BAD_ARGUMENT);
+
+ if (menu->status & _IN_DRIVER)
+ RETURN(E_BAD_STATE);
+
+ if (menu->status & _POSTED)
+ RETURN(E_POSTED);
+
+ if (menu->items && *(menu->items))
+ {
+ int y;
+ int h = 1 + menu->spc_rows * (menu->rows - 1);
+
+ WINDOW *win = Get_Menu_Window(menu);
+ int maxy = getmaxy(win);
+
+ if ((menu->win = newpad(h, menu->width)))
+ {
+ y = (maxy >= h) ? h : maxy;
+ if (y >= menu->height)
+ y = menu->height;
+ if (!(menu->sub = subpad(menu->win, y, menu->width, 0, 0)))
+ RETURN(E_SYSTEM_ERROR);
+ }
+ else
+ RETURN(E_SYSTEM_ERROR);
+
+ if (menu->status & _LINK_NEEDED)
+ _nc_Link_Items(menu);
+ }
+ else
+ RETURN(E_NOT_CONNECTED);
+
+ menu->status |= _POSTED;
+
+ if (!(menu->opt & O_ONEVALUE))
+ {
+ ITEM **items;
+
+ for (items = menu->items; *items; items++)
+ {
+ (*items)->value = FALSE;
+ }
+ }
+
+ _nc_Draw_Menu(menu);
+
+ Call_Hook(menu, menuinit);
+ Call_Hook(menu, iteminit);
+
+ _nc_Show_Menu(menu);
+
+ RETURN(E_OK);
+}
+
+/*---------------------------------------------------------------------------
+| Facility : libnmenu
+| Function : int unpost_menu(MENU *)
+|
+| Description : Detach menu from screen
+|
+| Return Values : E_OK - success
+| E_BAD_ARGUMENT - not a valid menu pointer
+| E_BAD_STATE - menu in userexit routine
+| E_NOT_POSTED - menu is not posted
++--------------------------------------------------------------------------*/
+NCURSES_EXPORT(int)
+unpost_menu(MENU * menu)
+{
+ WINDOW *win;
+
+ T((T_CALLED("unpost_menu(%p)"), menu));
+
+ if (!menu)
+ RETURN(E_BAD_ARGUMENT);
+
+ if (menu->status & _IN_DRIVER)
+ RETURN(E_BAD_STATE);
+
+ if (!(menu->status & _POSTED))
+ RETURN(E_NOT_POSTED);
+
+ Call_Hook(menu, itemterm);
+ Call_Hook(menu, menuterm);
+
+ win = Get_Menu_Window(menu);
+ werase(win);
+ wsyncup(win);
+
+ assert(menu->sub);
+ delwin(menu->sub);
+ menu->sub = (WINDOW *)0;
+
+ assert(menu->win);
+ delwin(menu->win);
+ menu->win = (WINDOW *)0;
+
+ menu->status &= ~_POSTED;
+
+ RETURN(E_OK);
+}
+
+/* m_post.c ends here */