diff options
Diffstat (limited to 'ncurses-5.3/menu/m_post.c')
-rw-r--r-- | ncurses-5.3/menu/m_post.c | 371 |
1 files changed, 371 insertions, 0 deletions
diff --git a/ncurses-5.3/menu/m_post.c b/ncurses-5.3/menu/m_post.c new file mode 100644 index 0000000..d4b69a0 --- /dev/null +++ b/ncurses-5.3/menu/m_post.c @@ -0,0 +1,371 @@ +/**************************************************************************** + * Copyright (c) 1998,2000 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 * + * Contact: http://www.familiepfeifer.de/Contact.aspx?Lang=en * + ****************************************************************************/ + +/*************************************************************************** +* Module m_post * +* Write or erase menus from associated subwindows * +***************************************************************************/ + +#include "menu.priv.h" + +MODULE_ID("$Id$") + +/*--------------------------------------------------------------------------- +| 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; + + 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;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_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 ++--------------------------------------------------------------------------*/ +NCURSES_EXPORT(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 ++--------------------------------------------------------------------------*/ +NCURSES_EXPORT(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 */ |