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/* $OpenBSD: lib_slk.c,v 1.5 2010/01/12 23:22:06 nicm Exp $ */ |
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/**************************************************************************** |
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* Copyright (c) 1998-2005,2008 Free Software Foundation, Inc. * |
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* * |
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* Permission is hereby granted, free of charge, to any person obtaining a * |
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* copy of this software and associated documentation files (the * |
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* "Software"), to deal in the Software without restriction, including * |
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* without limitation the rights to use, copy, modify, merge, publish, * |
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* distribute, distribute with modifications, sublicense, and/or sell * |
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* copies of the Software, and to permit persons to whom the Software is * |
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* furnished to do so, subject to the following conditions: * |
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* * |
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* The above copyright notice and this permission notice shall be included * |
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* in all copies or substantial portions of the Software. * |
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* * |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * |
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * |
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * |
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * |
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * |
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. * |
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* * |
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* Except as contained in this notice, the name(s) of the above copyright * |
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* holders shall not be used in advertising or otherwise to promote the * |
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* sale, use or other dealings in this Software without prior written * |
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* authorization. * |
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****************************************************************************/ |
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/**************************************************************************** |
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* Authors: * |
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* Gerhard Fuernkranz 1993 (original) * |
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* Zeyd M. Ben-Halim 1992,1995 (sic) * |
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* Eric S. Raymond * |
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* Juergen Pfeifer 1996-on * |
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* Thomas E. Dickey * |
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****************************************************************************/ |
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/* |
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* lib_slk.c |
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* Soft key routines. |
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*/ |
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#include <curses.priv.h> |
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#include <ctype.h> |
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#include <term.h> /* num_labels, label_*, plab_norm */ |
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MODULE_ID("$Id: lib_slk.c,v 1.5 2010/01/12 23:22:06 nicm Exp $") |
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/* |
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* Free any memory related to soft labels, return an error. |
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*/ |
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static int |
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slk_failed(void) |
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{ |
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if (SP->_slk) { |
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FreeIfNeeded(SP->_slk->ent); |
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free(SP->_slk); |
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SP->_slk = (SLK *) 0; |
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} |
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return ERR; |
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} |
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/* |
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* Initialize soft labels. |
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* Called from newterm() |
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*/ |
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NCURSES_EXPORT(int) |
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_nc_slk_initialize(WINDOW *stwin, int cols) |
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{ |
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int i, x; |
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int res = OK; |
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unsigned max_length; |
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T((T_CALLED("_nc_slk_initialize()"))); |
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if (SP->_slk) { /* we did this already, so simply return */ |
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returnCode(OK); |
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} else if ((SP->_slk = typeCalloc(SLK, 1)) == 0) |
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returnCode(ERR); |
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SP->_slk->ent = NULL; |
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/* |
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* If we use colors, vidputs() will suppress video attributes that conflict |
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* with colors. In that case, we're still guaranteed that "reverse" would |
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* work. |
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*/ |
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if ((no_color_video & 1) == 0) |
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SetAttr(SP->_slk->attr, A_STANDOUT); |
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else |
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SetAttr(SP->_slk->attr, A_REVERSE); |
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SP->_slk->maxlab = ((num_labels > 0) |
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? num_labels |
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: MAX_SKEY(_nc_globals.slk_format)); |
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SP->_slk->maxlen = ((num_labels > 0) |
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? label_width * label_height |
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: MAX_SKEY_LEN(_nc_globals.slk_format)); |
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SP->_slk->labcnt = ((SP->_slk->maxlab < MAX_SKEY(_nc_globals.slk_format)) |
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? MAX_SKEY(_nc_globals.slk_format) |
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: SP->_slk->maxlab); |
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if (SP->_slk->maxlen <= 0 |
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|| SP->_slk->labcnt <= 0 |
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|| (SP->_slk->ent = typeCalloc(slk_ent, |
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(unsigned) SP->_slk->labcnt)) == NULL) |
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returnCode(slk_failed()); |
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max_length = SP->_slk->maxlen; |
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for (i = 0; i < SP->_slk->labcnt; i++) { |
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size_t used = max_length + 1; |
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if ((SP->_slk->ent[i].ent_text = (char *) _nc_doalloc(0, used)) == 0) |
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returnCode(slk_failed()); |
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memset(SP->_slk->ent[i].ent_text, 0, used); |
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if ((SP->_slk->ent[i].form_text = (char *) _nc_doalloc(0, used)) == 0) |
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returnCode(slk_failed()); |
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memset(SP->_slk->ent[i].form_text, 0, used); |
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memset(SP->_slk->ent[i].form_text, ' ', max_length); |
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SP->_slk->ent[i].visible = (char) (i < SP->_slk->maxlab); |
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} |
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if (_nc_globals.slk_format >= 3) { /* PC style */ |
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int gap = (cols - 3 * (3 + 4 * max_length)) / 2; |
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if (gap < 1) |
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gap = 1; |
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for (i = x = 0; i < SP->_slk->maxlab; i++) { |
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SP->_slk->ent[i].ent_x = x; |
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x += max_length; |
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x += (i == 3 || i == 7) ? gap : 1; |
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} |
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} else { |
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if (_nc_globals.slk_format == 2) { /* 4-4 */ |
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int gap = cols - (SP->_slk->maxlab * max_length) - 6; |
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if (gap < 1) |
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gap = 1; |
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for (i = x = 0; i < SP->_slk->maxlab; i++) { |
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SP->_slk->ent[i].ent_x = x; |
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x += max_length; |
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x += (i == 3) ? gap : 1; |
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} |
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} else { |
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if (_nc_globals.slk_format == 1) { /* 1 -> 3-2-3 */ |
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int gap = (cols - (SP->_slk->maxlab * max_length) - 5) |
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/ 2; |
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if (gap < 1) |
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gap = 1; |
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for (i = x = 0; i < SP->_slk->maxlab; i++) { |
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SP->_slk->ent[i].ent_x = x; |
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x += max_length; |
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x += (i == 2 || i == 4) ? gap : 1; |
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} |
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} else |
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returnCode(slk_failed()); |
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} |
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} |
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SP->_slk->dirty = TRUE; |
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if ((SP->_slk->win = stwin) == NULL) { |
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returnCode(slk_failed()); |
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} |
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/* We now reset the format so that the next newterm has again |
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* per default no SLK keys and may call slk_init again to |
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* define a new layout. (juergen 03-Mar-1999) |
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*/ |
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SP->slk_format = _nc_globals.slk_format; |
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_nc_globals.slk_format = 0; |
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returnCode(res); |
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} |
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/* |
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* Restore the soft labels on the screen. |
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*/ |
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NCURSES_EXPORT(int) |
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slk_restore(void) |
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{ |
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T((T_CALLED("slk_restore()"))); |
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if (SP->_slk == NULL) |
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return (ERR); |
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SP->_slk->hidden = FALSE; |
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SP->_slk->dirty = TRUE; |
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returnCode(slk_refresh()); |
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} |