| /**************************************************************************** |
| * 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 */ |
