/****************************************************************************
* Copyright (c) 1998-2010,2011 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>
#ifndef CUR
#define CUR SP_TERMTYPE
#endif
MODULE_ID("$Id: lib_slk.c,v 1.48 2011/03/05 21:21:52 tom Exp $")
#ifdef USE_TERM_DRIVER
#define NumLabels InfoOf(SP_PARM).numlabels
#define NoColorVideo InfoOf(SP_PARM).nocolorvideo
#define LabelWidth InfoOf(SP_PARM).labelwidth
#define LabelHeight InfoOf(SP_PARM).labelheight
#else
#define NumLabels num_labels
#define NoColorVideo no_color_video
#define LabelWidth label_width
#define LabelHeight label_height
#endif
/*
* Free any memory related to soft labels, return an error.
*/
static int
slk_failed(NCURSES_SP_DCL0)
{
if ((0 != SP_PARM) && SP_PARM->_slk) {
FreeIfNeeded(SP_PARM->_slk->ent);
free(SP_PARM->_slk);
SP_PARM->_slk = (SLK *) 0;
}
return ERR;
}
NCURSES_EXPORT(int)
_nc_format_slks(NCURSES_SP_DCLx int cols)
{
int gap, i, x;
int max_length;
if (!SP_PARM || !SP_PARM->_slk)
return ERR;
max_length = SP_PARM->_slk->maxlen;
if (SP_PARM->slk_format >= 3) { /* PC style */
gap = (cols - 3 * (3 + 4 * max_length)) / 2;
if (gap < 1)
gap = 1;
for (i = x = 0; i < SP_PARM->_slk->maxlab; i++) {
SP_PARM->_slk->ent[i].ent_x = x;
x += max_length;
x += (i == 3 || i == 7) ? gap : 1;
}
} else {
if (SP_PARM->slk_format == 2) { /* 4-4 */
gap = cols - (int) (SP_PARM->_slk->maxlab * max_length) - 6;
if (gap < 1)
gap = 1;
for (i = x = 0; i < SP_PARM->_slk->maxlab; i++) {
SP_PARM->_slk->ent[i].ent_x = x;
x += max_length;
x += (i == 3) ? gap : 1;
}
} else {
if (SP_PARM->slk_format == 1) { /* 1 -> 3-2-3 */
gap = (cols - (SP_PARM->_slk->maxlab * max_length) - 5)
/ 2;
if (gap < 1)
gap = 1;
for (i = x = 0; i < SP_PARM->_slk->maxlab; i++) {
SP_PARM->_slk->ent[i].ent_x = x;
x += max_length;
x += (i == 2 || i == 4) ? gap : 1;
}
} else {
return slk_failed(NCURSES_SP_ARG);
}
}
}
SP_PARM->_slk->dirty = TRUE;
return OK;
}
/*
* Initialize soft labels.
* Called from newterm()
*/
NCURSES_EXPORT(int)
_nc_slk_initialize(WINDOW *stwin, int cols)
{
int i;
int res = OK;
size_t max_length;
SCREEN *sp;
int numlab;
T((T_CALLED("_nc_slk_initialize()")));
assert(stwin);
sp = _nc_screen_of(stwin);
if (0 == sp)
returnCode(ERR);
assert(TerminalOf(SP_PARM));
numlab = NumLabels;
if (SP_PARM->_slk) { /* we did this already, so simply return */
returnCode(OK);
} else if ((SP_PARM->_slk = typeCalloc(SLK, 1)) == 0)
returnCode(ERR);
if (!SP_PARM->slk_format)
SP_PARM->slk_format = _nc_globals.slk_format;
/*
* 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 ((NoColorVideo & 1) == 0)
SetAttr(SP_PARM->_slk->attr, A_STANDOUT);
else
SetAttr(SP_PARM->_slk->attr, A_REVERSE);
SP_PARM->_slk->maxlab = (short) ((numlab > 0)
? numlab
: MAX_SKEY(SP_PARM->slk_format));
SP_PARM->_slk->maxlen = (short) ((numlab > 0)
? LabelWidth * LabelHeight
: MAX_SKEY_LEN(SP_PARM->slk_format));
SP_PARM->_slk->labcnt = (short) ((SP_PARM->_slk->maxlab < MAX_SKEY(SP_PARM->slk_format))
? MAX_SKEY(SP_PARM->slk_format)
: SP_PARM->_slk->maxlab);
if (SP_PARM->_slk->maxlen <= 0
|| SP_PARM->_slk->labcnt <= 0
|| (SP_PARM->_slk->ent = typeCalloc(slk_ent,
(size_t) SP_PARM->_slk->labcnt))
== NULL)
returnCode(slk_failed(NCURSES_SP_ARG));
max_length = (size_t) SP_PARM->_slk->maxlen;
for (i = 0; i < SP_PARM->_slk->labcnt; i++) {
size_t used = max_length + 1;
SP_PARM->_slk->ent[i].ent_text = (char *) _nc_doalloc(0, used);
if (SP_PARM->_slk->ent[i].ent_text == 0)
returnCode(slk_failed(NCURSES_SP_ARG));
memset(SP_PARM->_slk->ent[i].ent_text, 0, used);
SP_PARM->_slk->ent[i].form_text = (char *) _nc_doalloc(0, used);
if (SP_PARM->_slk->ent[i].form_text == 0)
returnCode(slk_failed(NCURSES_SP_ARG));
if (used > 1) {
memset(SP_PARM->_slk->ent[i].form_text, ' ', used - 1);
}
SP_PARM->_slk->ent[i].form_text[used - 1] = '\0';
SP_PARM->_slk->ent[i].visible = (char) (i < SP_PARM->_slk->maxlab);
}
res = _nc_format_slks(NCURSES_SP_ARGx cols);
if ((SP_PARM->_slk->win = stwin) == NULL) {
returnCode(slk_failed(NCURSES_SP_ARG));
}
/* 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)
*/
_nc_globals.slk_format = 0;
returnCode(res);
}
/*
* Restore the soft labels on the screen.
*/
NCURSES_EXPORT(int)
NCURSES_SP_NAME(slk_restore) (NCURSES_SP_DCL0)
{
T((T_CALLED("slk_restore(%p)"), (void *) SP_PARM));
if (0 == SP_PARM)
returnCode(ERR);
if (SP_PARM->_slk == NULL)
returnCode(ERR);
SP_PARM->_slk->hidden = FALSE;
SP_PARM->_slk->dirty = TRUE;
returnCode(NCURSES_SP_NAME(slk_refresh) (NCURSES_SP_ARG));
}
#if NCURSES_SP_FUNCS
NCURSES_EXPORT(int)
slk_restore(void)
{
return NCURSES_SP_NAME(slk_restore) (CURRENT_SCREEN);
}
#endif
