diff options
Diffstat (limited to 'ncurses-5.3/ncurses/base/lib_slk.c')
| -rw-r--r-- | ncurses-5.3/ncurses/base/lib_slk.c | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/ncurses-5.3/ncurses/base/lib_slk.c b/ncurses-5.3/ncurses/base/lib_slk.c new file mode 100644 index 0000000..e2fb0f5 --- /dev/null +++ b/ncurses-5.3/ncurses/base/lib_slk.c @@ -0,0 +1,201 @@ +/**************************************************************************** + * Copyright (c) 1998-2000,2002 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: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * + * and: Eric S. Raymond <esr@snark.thyrsus.com> * + ****************************************************************************/ + +/* + * lib_slk.c + * Soft key routines. + */ + +#include <curses.priv.h> + +#include <ctype.h> +#include <term.h> /* num_labels, label_*, plab_norm */ + +MODULE_ID("$Id$") + +/* + * We'd like to move these into the screen context structure, but cannot, + * because slk_init() is called before initscr()/newterm(). + */ +NCURSES_EXPORT_VAR(int) +_nc_slk_format = 0; /* one more than format specified in slk_init() */ + +/* + * Paint the info line for the PC style SLK emulation. + * + */ +static void +slk_paint_info(WINDOW *win) +{ + if (win && SP->slk_format == 4) { + int i; + + mvwhline(win, 0, 0, 0, getmaxx(win)); + wmove(win, 0, 0); + + for (i = 0; i < SP->_slk->maxlab; i++) { + mvwprintw(win, 0, SP->_slk->ent[i].x, "F%d", i + 1); + } + } +} + +/* + * Initialize soft labels. + * Called from newterm() + */ +NCURSES_EXPORT(int) +_nc_slk_initialize(WINDOW *stwin, int cols) +{ + int i, x; + int res = OK; + char *p; + unsigned max_length; + + T(("slk_initialize()")); + + if (SP->_slk) { /* we did this already, so simply return */ + return (OK); + } else if ((SP->_slk = typeCalloc(SLK, 1)) == 0) + return (ERR); + + SP->_slk->ent = NULL; + SP->_slk->buffer = NULL; + SP->_slk->attr = A_STANDOUT; + + SP->_slk->maxlab = ((num_labels > 0) + ? num_labels + : MAX_SKEY(_nc_slk_format)); + SP->_slk->maxlen = ((num_labels > 0) + ? label_width * label_height + : MAX_SKEY_LEN(_nc_slk_format)); + SP->_slk->labcnt = ((SP->_slk->maxlab < MAX_SKEY(_nc_slk_format)) + ? MAX_SKEY(_nc_slk_format) + : SP->_slk->maxlab); + + if (SP->_slk->maxlen <= 0 + || SP->_slk->labcnt <= 0 + || (SP->_slk->ent = typeCalloc(slk_ent, + (unsigned) SP->_slk->labcnt)) == NULL) + goto exception; + + max_length = SP->_slk->maxlen; + p = SP->_slk->buffer = (char *) calloc((unsigned) (2 * SP->_slk->labcnt), + (1 + max_length)); + if (SP->_slk->buffer == NULL) + goto exception; + + for (i = 0; i < SP->_slk->labcnt; i++) { + SP->_slk->ent[i].text = p; + p += (1 + max_length); + SP->_slk->ent[i].form_text = p; + p += (1 + max_length); + memset(SP->_slk->ent[i].form_text, ' ', max_length); + SP->_slk->ent[i].visible = (i < SP->_slk->maxlab); + } + if (_nc_slk_format >= 3) { /* PC style */ + int gap = (cols - 3 * (3 + 4 * max_length)) / 2; + + if (gap < 1) + gap = 1; + + for (i = x = 0; i < SP->_slk->maxlab; i++) { + SP->_slk->ent[i].x = x; + x += max_length; + x += (i == 3 || i == 7) ? gap : 1; + } + slk_paint_info(stwin); + } else { + if (_nc_slk_format == 2) { /* 4-4 */ + int gap = cols - (SP->_slk->maxlab * max_length) - 6; + + if (gap < 1) + gap = 1; + for (i = x = 0; i < SP->_slk->maxlab; i++) { + SP->_slk->ent[i].x = x; + x += max_length; + x += (i == 3) ? gap : 1; + } + } else { + if (_nc_slk_format == 1) { /* 1 -> 3-2-3 */ + int gap = (cols - (SP->_slk->maxlab * max_length) - 5) + / 2; + + if (gap < 1) + gap = 1; + for (i = x = 0; i < SP->_slk->maxlab; i++) { + SP->_slk->ent[i].x = x; + x += max_length; + x += (i == 2 || i == 4) ? gap : 1; + } + } else + goto exception; + } + } + SP->_slk->dirty = TRUE; + if ((SP->_slk->win = stwin) == NULL) { + exception: + if (SP->_slk) { + FreeIfNeeded(SP->_slk->buffer); + FreeIfNeeded(SP->_slk->ent); + free(SP->_slk); + SP->_slk = (SLK *) 0; + res = (ERR); + } + } + + /* We now reset the format so that the next newterm has again + * per default no SLK keys and may call slk_init again to + * define a new layout. (juergen 03-Mar-1999) + */ + SP->slk_format = _nc_slk_format; + _nc_slk_format = 0; + return (res); +} + +/* + * Restore the soft labels on the screen. + */ +NCURSES_EXPORT(int) +slk_restore(void) +{ + T((T_CALLED("slk_restore()"))); + + if (SP->_slk == NULL) + return (ERR); + SP->_slk->hidden = FALSE; + SP->_slk->dirty = TRUE; + /* we have to repaint info line eventually */ + slk_paint_info(SP->_slk->win); + + returnCode(slk_refresh()); +} |