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freebsd-dev/menu/m_post.c
Ed Schouten 0294a182a1 Import a stock copy of ncurses 5.8 into the vendor space. 
It seems both local changes we made to 5.7 have already been fixed
upstream properly, so there is no need to preserve the changes. Also,
with SVN we import full source trees. Unlike CVS, where we removed
unneeded cruft.
2011-04-30 10:55:14 +00:00

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/****************************************************************************
* Copyright (c) 1998-2009,2010 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 1.29 2010/05/01 19:18:27 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))
(void)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* 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)"), (void *)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)"), (void *)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 */
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