/*-----------------------------------------------------------------------------+ | The ncurses menu library is Copyright (C) 1995-1997 | | by Juergen Pfeifer | | All Rights Reserved. | | | | Permission to use, copy, modify, and distribute this software and its | | documentation for any purpose and without fee is hereby granted, provided | | that the above copyright notice appear in all copies and that both that | | copyright notice and this permission notice appear in supporting | | documentation, and that the name of the above listed copyright holder(s) not | | be used in advertising or publicity pertaining to distribution of the | | software without specific, written prior permission. | | | | THE ABOVE LISTED COPYRIGHT HOLDER(S) DISCLAIM ALL WARRANTIES WITH REGARD TO | | THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT- | | NESS, IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR | | ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RE- | | SULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, | | NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH | | THE USE OR PERFORMANCE OF THIS SOFTWARE. | +-----------------------------------------------------------------------------*/ /*************************************************************************** * Module menu_post * * Write or erase menus from associated subwindows * ***************************************************************************/ #include "menu.priv.h" MODULE_ID("$Id: m_post.c,v 1.12 1997/05/01 16:47:26 juergen 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 : - +--------------------------------------------------------------------------*/ 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; 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); for(ch=' ',i=menu->namelen-item->name.length;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); for(ch=' ',i=menu->desclen-item->description.length; 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;kwin,' '); } 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 : - +--------------------------------------------------------------------------*/ 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;jspc_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_NO_ROOM - Menu to large for screen | E_NOT_CONNECTED - No items connected to menu | E_BAD_STATE - Menu in userexit routine | E_POSTED - Menu already posted +--------------------------------------------------------------------------*/ int post_menu(MENU * 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); int maxx = getmaxx(win); if (maxx < menu->width || maxy < menu->height) RETURN(E_NO_ROOM); 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 +--------------------------------------------------------------------------*/ int unpost_menu(MENU * menu) { WINDOW *win; 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 */