378 lines
11 KiB
C
378 lines
11 KiB
C
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/****************************************************************************
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* Copyright (c) 1998-2009,2010 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/****************************************************************************
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* Author: Juergen Pfeifer, 1995,1997 *
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****************************************************************************/
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/***************************************************************************
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* Module m_post *
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* Write or erase menus from associated subwindows *
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***************************************************************************/
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#include "menu.priv.h"
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MODULE_ID("$Id: m_post.c,v 1.29 2010/05/01 19:18:27 tom Exp $")
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/*---------------------------------------------------------------------------
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| Facility : libnmenu
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| Function : void _nc_Post_Item(MENU *menu, ITEM *item)
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| Description : Draw the item in the menus window at the current
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| window position
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| Return Values : -
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+--------------------------------------------------------------------------*/
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NCURSES_EXPORT(void)
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_nc_Post_Item(const MENU * menu, const ITEM * item)
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{
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int i;
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chtype ch;
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int item_x, item_y;
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int count = 0;
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bool isfore = FALSE, isback = FALSE, isgrey = FALSE;
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int name_len;
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int desc_len;
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assert(menu->win);
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getyx(menu->win, item_y, item_x);
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/* We need a marker iff
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- it is a onevalued menu and it is the current item
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- or it has a selection value
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*/
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wattron(menu->win, menu->back);
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if (item->value || (item == menu->curitem))
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{
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if (menu->marklen)
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{
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/* In a multi selection menu we use the fore attribute
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for a selected marker that is not the current one.
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This improves visualization of the menu, because now
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always the 'normal' marker denotes the current
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item. */
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if (!(menu->opt & O_ONEVALUE) && item->value && item != menu->curitem)
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{
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wattron(menu->win, menu->fore);
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isfore = TRUE;
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}
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waddstr(menu->win, menu->mark);
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if (isfore)
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{
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wattron(menu->win, menu->fore);
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isfore = FALSE;
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}
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}
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}
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else /* otherwise we have to wipe out the marker area */
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for (ch = ' ', i = menu->marklen; i > 0; i--)
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waddch(menu->win, ch);
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wattroff(menu->win, menu->back);
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count += menu->marklen;
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/* First we have to calculate the attribute depending on selectability
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and selection status
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*/
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if (!(item->opt & O_SELECTABLE))
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{
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wattron(menu->win, menu->grey);
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isgrey = TRUE;
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}
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else
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{
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if (item->value || item == menu->curitem)
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{
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wattron(menu->win, menu->fore);
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isfore = TRUE;
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}
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else
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{
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wattron(menu->win, menu->back);
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isback = TRUE;
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}
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}
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waddnstr(menu->win, item->name.str, item->name.length);
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name_len = _nc_Calculate_Text_Width(&(item->name));
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for (ch = ' ', i = menu->namelen - name_len; i > 0; i--)
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{
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waddch(menu->win, ch);
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}
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count += menu->namelen;
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/* Show description if required and available */
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if ((menu->opt & O_SHOWDESC) && menu->desclen > 0)
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{
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int m = menu->spc_desc / 2;
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int cy = -1, cx = -1;
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for (ch = ' ', i = 0; i < menu->spc_desc; i++)
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{
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if (i == m)
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{
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waddch(menu->win, menu->pad);
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getyx(menu->win, cy, cx);
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}
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else
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waddch(menu->win, ch);
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}
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if (item->description.length)
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waddnstr(menu->win, item->description.str, item->description.length);
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desc_len = _nc_Calculate_Text_Width(&(item->description));
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for (ch = ' ', i = menu->desclen - desc_len; i > 0; i--)
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{
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waddch(menu->win, ch);
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}
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count += menu->desclen + menu->spc_desc;
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if (menu->spc_rows > 1)
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{
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int j, k, ncy, ncx;
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assert(cx >= 0 && cy >= 0);
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getyx(menu->win, ncy, ncx);
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if (isgrey)
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wattroff(menu->win, menu->grey);
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else if (isfore)
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wattroff(menu->win, menu->fore);
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wattron(menu->win, menu->back);
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for (j = 1; j < menu->spc_rows; j++)
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{
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if ((item_y + j) < getmaxy(menu->win))
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{
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wmove(menu->win, item_y + j, item_x);
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for (k = 0; k < count; k++)
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waddch(menu->win, ' ');
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}
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if ((cy + j) < getmaxy(menu->win))
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(void)mvwaddch(menu->win, cy + j, cx - 1, menu->pad);
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}
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wmove(menu->win, ncy, ncx);
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if (!isback)
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wattroff(menu->win, menu->back);
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}
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}
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/* Remove attributes */
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if (isfore)
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wattroff(menu->win, menu->fore);
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if (isback)
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wattroff(menu->win, menu->back);
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if (isgrey)
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wattroff(menu->win, menu->grey);
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}
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/*---------------------------------------------------------------------------
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| Facility : libnmenu
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| Function : void _nc_Draw_Menu(const MENU *)
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| Description : Display the menu in its windows
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| Return Values : -
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+--------------------------------------------------------------------------*/
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NCURSES_EXPORT(void)
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_nc_Draw_Menu(const MENU * menu)
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{
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ITEM *item = menu->items[0];
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ITEM *lasthor, *lastvert;
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ITEM *hitem;
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int y = 0;
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chtype s_bkgd;
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assert(item && menu->win);
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s_bkgd = getbkgd(menu->win);
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wbkgdset(menu->win, menu->back);
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werase(menu->win);
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wbkgdset(menu->win, s_bkgd);
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lastvert = (menu->opt & O_NONCYCLIC) ? (ITEM *) 0 : item;
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do
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{
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wmove(menu->win, y, 0);
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hitem = item;
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lasthor = (menu->opt & O_NONCYCLIC) ? (ITEM *) 0 : hitem;
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do
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{
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_nc_Post_Item(menu, hitem);
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wattron(menu->win, menu->back);
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if (((hitem = hitem->right) != lasthor) && hitem)
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{
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int i, j, cy, cx;
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chtype ch = ' ';
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getyx(menu->win, cy, cx);
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for (j = 0; j < menu->spc_rows; j++)
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{
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wmove(menu->win, cy + j, cx);
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for (i = 0; i < menu->spc_cols; i++)
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{
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waddch(menu->win, ch);
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}
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}
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wmove(menu->win, cy, cx + menu->spc_cols);
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}
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}
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while (hitem && (hitem != lasthor));
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wattroff(menu->win, menu->back);
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item = item->down;
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y += menu->spc_rows;
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}
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while (item && (item != lastvert));
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}
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/*---------------------------------------------------------------------------
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| Facility : libnmenu
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| Function : int post_menu(MENU* menu)
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| Description : Post a menu to the screen. This makes it visible.
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| Return Values : E_OK - success
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| E_BAD_ARGUMENT - not a valid menu pointer
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| E_SYSTEM_ERROR - error in lower layers
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| E_NOT_CONNECTED - No items connected to menu
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| E_BAD_STATE - Menu in userexit routine
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| E_POSTED - Menu already posted
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+--------------------------------------------------------------------------*/
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NCURSES_EXPORT(int)
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post_menu(MENU * menu)
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{
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T((T_CALLED("post_menu(%p)"), (void *)menu));
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if (!menu)
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RETURN(E_BAD_ARGUMENT);
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if (menu->status & _IN_DRIVER)
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RETURN(E_BAD_STATE);
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if (menu->status & _POSTED)
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RETURN(E_POSTED);
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if (menu->items && *(menu->items))
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{
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int y;
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int h = 1 + menu->spc_rows * (menu->rows - 1);
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WINDOW *win = Get_Menu_Window(menu);
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int maxy = getmaxy(win);
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if ((menu->win = newpad(h+2, menu->width+2)))
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{
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y = (maxy >= h) ? h : maxy;
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if (y >= menu->height)
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y = menu->height;
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if (!(menu->sub = subpad(menu->win, y, menu->width, 0, 0)))
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RETURN(E_SYSTEM_ERROR);
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}
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else
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RETURN(E_SYSTEM_ERROR);
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if (menu->status & _LINK_NEEDED)
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_nc_Link_Items(menu);
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}
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else
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RETURN(E_NOT_CONNECTED);
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menu->status |= _POSTED;
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if (!(menu->opt & O_ONEVALUE))
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{
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ITEM **items;
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for (items = menu->items; *items; items++)
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{
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(*items)->value = FALSE;
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}
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}
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_nc_Draw_Menu(menu);
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Call_Hook(menu, menuinit);
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Call_Hook(menu, iteminit);
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_nc_Show_Menu(menu);
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RETURN(E_OK);
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}
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/*---------------------------------------------------------------------------
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| Facility : libnmenu
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| Function : int unpost_menu(MENU*)
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| Description : Detach menu from screen
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| Return Values : E_OK - success
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| E_BAD_ARGUMENT - not a valid menu pointer
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| E_BAD_STATE - menu in userexit routine
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| E_NOT_POSTED - menu is not posted
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+--------------------------------------------------------------------------*/
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NCURSES_EXPORT(int)
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unpost_menu(MENU * menu)
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{
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WINDOW *win;
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T((T_CALLED("unpost_menu(%p)"), (void *)menu));
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if (!menu)
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RETURN(E_BAD_ARGUMENT);
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if (menu->status & _IN_DRIVER)
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RETURN(E_BAD_STATE);
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if (!(menu->status & _POSTED))
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RETURN(E_NOT_POSTED);
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Call_Hook(menu, itemterm);
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Call_Hook(menu, menuterm);
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win = Get_Menu_Window(menu);
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werase(win);
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wsyncup(win);
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assert(menu->sub);
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delwin(menu->sub);
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menu->sub = (WINDOW *)0;
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assert(menu->win);
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delwin(menu->win);
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menu->win = (WINDOW *)0;
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menu->status &= ~_POSTED;
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RETURN(E_OK);
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}
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/* m_post.c ends here */
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