1 /* $OpenBSD: lib_slk.c,v 1.5 2010/01/12 23:22:06 nicm Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 1998-2005,2008 Free Software Foundation, Inc. * 5 * * 6 * Permission is hereby granted, free of charge, to any person obtaining a * 7 * copy of this software and associated documentation files (the * 8 * "Software"), to deal in the Software without restriction, including * 9 * without limitation the rights to use, copy, modify, merge, publish, * 10 * distribute, distribute with modifications, sublicense, and/or sell * 11 * copies of the Software, and to permit persons to whom the Software is * 12 * furnished to do so, subject to the following conditions: * 13 * * 14 * The above copyright notice and this permission notice shall be included * 15 * in all copies or substantial portions of the Software. * 16 * * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 24 * * 25 * Except as contained in this notice, the name(s) of the above copyright * 26 * holders shall not be used in advertising or otherwise to promote the * 27 * sale, use or other dealings in this Software without prior written * 28 * authorization. * 29 ****************************************************************************/ 30 31 /**************************************************************************** 32 * Authors: * 33 * Gerhard Fuernkranz 1993 (original) * 34 * Zeyd M. Ben-Halim 1992,1995 (sic) * 35 * Eric S. Raymond * 36 * Juergen Pfeifer 1996-on * 37 * Thomas E. Dickey * 38 ****************************************************************************/ 39 40 /* 41 * lib_slk.c 42 * Soft key routines. 43 */ 44 45 #include <curses.priv.h> 46 47 #include <ctype.h> 48 #include <term.h> /* num_labels, label_*, plab_norm */ 49 50 MODULE_ID("$Id: lib_slk.c,v 1.5 2010/01/12 23:22:06 nicm Exp $") 51 52 /* 53 * Free any memory related to soft labels, return an error. 54 */ 55 static int 56 slk_failed(void) 57 { 58 if (SP->_slk) { 59 FreeIfNeeded(SP->_slk->ent); 60 free(SP->_slk); 61 SP->_slk = (SLK *) 0; 62 } 63 return ERR; 64 } 65 66 /* 67 * Initialize soft labels. 68 * Called from newterm() 69 */ 70 NCURSES_EXPORT(int) 71 _nc_slk_initialize(WINDOW *stwin, int cols) 72 { 73 int i, x; 74 int res = OK; 75 unsigned max_length; 76 77 T((T_CALLED("_nc_slk_initialize()"))); 78 79 if (SP->_slk) { /* we did this already, so simply return */ 80 returnCode(OK); 81 } else if ((SP->_slk = typeCalloc(SLK, 1)) == 0) 82 returnCode(ERR); 83 84 SP->_slk->ent = NULL; 85 86 /* 87 * If we use colors, vidputs() will suppress video attributes that conflict 88 * with colors. In that case, we're still guaranteed that "reverse" would 89 * work. 90 */ 91 if ((no_color_video & 1) == 0) 92 SetAttr(SP->_slk->attr, A_STANDOUT); 93 else 94 SetAttr(SP->_slk->attr, A_REVERSE); 95 96 SP->_slk->maxlab = ((num_labels > 0) 97 ? num_labels 98 : MAX_SKEY(_nc_globals.slk_format)); 99 SP->_slk->maxlen = ((num_labels > 0) 100 ? label_width * label_height 101 : MAX_SKEY_LEN(_nc_globals.slk_format)); 102 SP->_slk->labcnt = ((SP->_slk->maxlab < MAX_SKEY(_nc_globals.slk_format)) 103 ? MAX_SKEY(_nc_globals.slk_format) 104 : SP->_slk->maxlab); 105 106 if (SP->_slk->maxlen <= 0 107 || SP->_slk->labcnt <= 0 108 || (SP->_slk->ent = typeCalloc(slk_ent, 109 (unsigned) SP->_slk->labcnt)) == NULL) 110 returnCode(slk_failed()); 111 112 max_length = SP->_slk->maxlen; 113 for (i = 0; i < SP->_slk->labcnt; i++) { 114 size_t used = max_length + 1; 115 116 if ((SP->_slk->ent[i].ent_text = (char *) _nc_doalloc(0, used)) == 0) 117 returnCode(slk_failed()); 118 memset(SP->_slk->ent[i].ent_text, 0, used); 119 120 if ((SP->_slk->ent[i].form_text = (char *) _nc_doalloc(0, used)) == 0) 121 returnCode(slk_failed()); 122 memset(SP->_slk->ent[i].form_text, 0, used); 123 124 memset(SP->_slk->ent[i].form_text, ' ', max_length); 125 SP->_slk->ent[i].visible = (char) (i < SP->_slk->maxlab); 126 } 127 if (_nc_globals.slk_format >= 3) { /* PC style */ 128 int gap = (cols - 3 * (3 + 4 * max_length)) / 2; 129 130 if (gap < 1) 131 gap = 1; 132 133 for (i = x = 0; i < SP->_slk->maxlab; i++) { 134 SP->_slk->ent[i].ent_x = x; 135 x += max_length; 136 x += (i == 3 || i == 7) ? gap : 1; 137 } 138 } else { 139 if (_nc_globals.slk_format == 2) { /* 4-4 */ 140 int gap = cols - (SP->_slk->maxlab * max_length) - 6; 141 142 if (gap < 1) 143 gap = 1; 144 for (i = x = 0; i < SP->_slk->maxlab; i++) { 145 SP->_slk->ent[i].ent_x = x; 146 x += max_length; 147 x += (i == 3) ? gap : 1; 148 } 149 } else { 150 if (_nc_globals.slk_format == 1) { /* 1 -> 3-2-3 */ 151 int gap = (cols - (SP->_slk->maxlab * max_length) - 5) 152 / 2; 153 154 if (gap < 1) 155 gap = 1; 156 for (i = x = 0; i < SP->_slk->maxlab; i++) { 157 SP->_slk->ent[i].ent_x = x; 158 x += max_length; 159 x += (i == 2 || i == 4) ? gap : 1; 160 } 161 } else 162 returnCode(slk_failed()); 163 } 164 } 165 SP->_slk->dirty = TRUE; 166 if ((SP->_slk->win = stwin) == NULL) { 167 returnCode(slk_failed()); 168 } 169 170 /* We now reset the format so that the next newterm has again 171 * per default no SLK keys and may call slk_init again to 172 * define a new layout. (juergen 03-Mar-1999) 173 */ 174 SP->slk_format = _nc_globals.slk_format; 175 _nc_globals.slk_format = 0; 176 returnCode(res); 177 } 178 179 /* 180 * Restore the soft labels on the screen. 181 */ 182 NCURSES_EXPORT(int) 183 slk_restore(void) 184 { 185 T((T_CALLED("slk_restore()"))); 186 187 if (SP->_slk == NULL) 188 return (ERR); 189 SP->_slk->hidden = FALSE; 190 SP->_slk->dirty = TRUE; 191 192 returnCode(slk_refresh()); 193 } 194