diff options
Diffstat (limited to 'ncurses-5.9/ncurses/base/lib_slk.c')
| -rw-r--r-- | ncurses-5.9/ncurses/base/lib_slk.c | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/ncurses-5.9/ncurses/base/lib_slk.c b/ncurses-5.9/ncurses/base/lib_slk.c new file mode 100644 index 0000000..1876f17 --- /dev/null +++ b/ncurses-5.9/ncurses/base/lib_slk.c @@ -0,0 +1,251 @@ +/**************************************************************************** + * 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("$Id$") + +#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 |