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/****************************************************************************
* Copyright (c) 1998-2004,2005 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. *
****************************************************************************/
/****************************************************************************
* Authors: *
* Gerhard Fuernkranz 1993 (original) *
* Zeyd M. Ben-Halim 1992,1995 (sic) *
* Eric S. Raymond *
* Juergen Pfeifer 1996-on *
* Thomas E. Dickey *
****************************************************************************/
/*
* lib_slk.c
* Soft key routines.
*/
#include <curses.priv.h>
#include <ctype.h>
#include <term.h> /* num_labels, label_*, plab_norm */
MODULE_ID("$Id: lib_slk.c,v 1.30 2005/01/08 21:56:36 tom Exp $")
/*
* 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].ent_x, "F%d", i + 1);
}
}
}
/*
* Free any memory related to soft labels, return an error.
*/
static int
slk_failed(void)
{
if (SP->_slk) {
FreeIfNeeded(SP->_slk->ent);
free(SP->_slk);
SP->_slk = (SLK *) 0;
}
return ERR;
}
/*
* Initialize soft labels.
* Called from newterm()
*/
NCURSES_EXPORT(int)
_nc_slk_initialize(WINDOW *stwin, int cols)
{
int i, x;
int res = OK;
unsigned max_length;
T((T_CALLED("_nc_slk_initialize()")));
if (SP->_slk) { /* we did this already, so simply return */
returnCode(OK);
} else if ((SP->_slk = typeCalloc(SLK, 1)) == 0)
returnCode(ERR);
SP->_slk->ent = NULL;
/*
* If we use colors, vidputs() will suppress video attributes that conflict
* with colors. In that case, we're still guaranteed that "reverse" would
* work.
*/
if ((no_color_video & 1) == 0)
SetAttr(SP->_slk->attr, A_STANDOUT);
else
SetAttr(SP->_slk->attr, A_REVERSE);
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)
returnCode(slk_failed());
max_length = SP->_slk->maxlen;
for (i = 0; i < SP->_slk->labcnt; i++) {
size_t used = max_length + 1;
if ((SP->_slk->ent[i].ent_text = (char *) _nc_doalloc(0, used)) == 0)
returnCode(slk_failed());
memset(SP->_slk->ent[i].ent_text, 0, used);
if ((SP->_slk->ent[i].form_text = (char *) _nc_doalloc(0, used)) == 0)
returnCode(slk_failed());
memset(SP->_slk->ent[i].form_text, 0, used);
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].ent_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].ent_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].ent_x = x;
x += max_length;
x += (i == 2 || i == 4) ? gap : 1;
}
} else
returnCode(slk_failed());
}
}
SP->_slk->dirty = TRUE;
if ((SP->_slk->win = stwin) == NULL) {
returnCode(slk_failed());
}
/* 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;
returnCode(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());
}
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