1 /**************************************************************************** 2 * Copyright (c) 1998,1999 Free Software Foundation, Inc. * 3 * * 4 * Permission is hereby granted, free of charge, to any person obtaining a * 5 * copy of this software and associated documentation files (the * 6 * "Software"), to deal in the Software without restriction, including * 7 * without limitation the rights to use, copy, modify, merge, publish, * 8 * distribute, distribute with modifications, sublicense, and/or sell * 9 * copies of the Software, and to permit persons to whom the Software is * 10 * furnished to do so, subject to the following conditions: * 11 * * 12 * The above copyright notice and this permission notice shall be included * 13 * in all copies or substantial portions of the Software. * 14 * * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 22 * * 23 * Except as contained in this notice, the name(s) of the above copyright * 24 * holders shall not be used in advertising or otherwise to promote the * 25 * sale, use or other dealings in this Software without prior written * 26 * authorization. * 27 ****************************************************************************/ 28 29 /**************************************************************************** 30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * 31 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 32 ****************************************************************************/ 33 34 /* 35 * lib_slk.c 36 * Soft key routines. 37 */ 38 39 #include <curses.priv.h> 40 41 #include <ctype.h> 42 #include <term.h> /* num_labels, label_*, plab_norm */ 43 44 MODULE_ID("$Id: lib_slk.c,v 1.17 1999/10/30 23:00:16 tom Exp $") 45 46 /* 47 * We'd like to move these into the screen context structure, but cannot, 48 * because slk_init() is called before initscr()/newterm(). 49 */ 50 int _nc_slk_format = 0; /* one more than format specified in slk_init() */ 51 52 /* 53 * Paint the info line for the PC style SLK emulation. 54 * 55 */ 56 static void 57 slk_paint_info(WINDOW *win) 58 { 59 if (win && SP->slk_format==4) 60 { 61 int i; 62 63 mvwhline (win,0,0,0,getmaxx(win)); 64 wmove (win,0,0); 65 66 for (i = 0; i < SP->_slk->maxlab; i++) { 67 if (win && SP->slk_format==4) 68 { 69 mvwaddch(win,0,SP->_slk->ent[i].x,'F'); 70 if (i<9) 71 waddch(win,'1'+i); 72 else 73 { 74 waddch(win,'1'); 75 waddch(win,'0' + (i-9)); 76 } 77 } 78 } 79 } 80 } 81 82 /* 83 * Initialize soft labels. 84 * Called from newterm() 85 */ 86 int 87 _nc_slk_initialize(WINDOW *stwin, int cols) 88 { 89 int i, x; 90 int res = OK; 91 char *p; 92 93 T(("slk_initialize()")); 94 95 if (SP->_slk) 96 { /* we did this already, so simply return */ 97 return(OK); 98 } 99 else 100 if ((SP->_slk = typeCalloc(SLK, 1)) == 0) 101 return(ERR); 102 103 SP->_slk->ent = NULL; 104 SP->_slk->buffer = NULL; 105 SP->_slk->attr = A_STANDOUT; 106 107 SP->_slk->maxlab = (num_labels > 0) ? 108 num_labels : MAX_SKEY(_nc_slk_format); 109 SP->_slk->maxlen = (num_labels > 0) ? 110 label_width * label_height : MAX_SKEY_LEN(_nc_slk_format); 111 SP->_slk->labcnt = (SP->_slk->maxlab < MAX_SKEY(_nc_slk_format)) ? 112 MAX_SKEY(_nc_slk_format) : SP->_slk->maxlab; 113 114 SP->_slk->ent = typeCalloc(slk_ent, SP->_slk->labcnt); 115 if (SP->_slk->ent == NULL) 116 goto exception; 117 118 p = SP->_slk->buffer = (char*) calloc(2*SP->_slk->labcnt,(1+SP->_slk->maxlen)); 119 if (SP->_slk->buffer == NULL) 120 goto exception; 121 122 for (i = 0; i < SP->_slk->labcnt; i++) { 123 SP->_slk->ent[i].text = p; 124 p += (1 + SP->_slk->maxlen); 125 SP->_slk->ent[i].form_text = p; 126 p += (1 + SP->_slk->maxlen); 127 memset(SP->_slk->ent[i].form_text, ' ', (unsigned)(SP->_slk->maxlen)); 128 SP->_slk->ent[i].visible = (i < SP->_slk->maxlab); 129 } 130 if (_nc_slk_format >= 3) /* PC style */ 131 { 132 int gap = (cols - 3 * (3 + 4*SP->_slk->maxlen))/2; 133 134 if (gap < 1) 135 gap = 1; 136 137 for (i = x = 0; i < SP->_slk->maxlab; i++) { 138 SP->_slk->ent[i].x = x; 139 x += SP->_slk->maxlen; 140 x += (i==3 || i==7) ? gap : 1; 141 } 142 if (_nc_slk_format == 4) 143 slk_paint_info (stwin); 144 } 145 else { 146 if (_nc_slk_format == 2) { /* 4-4 */ 147 int gap = cols - (SP->_slk->maxlab * SP->_slk->maxlen) - 6; 148 149 if (gap < 1) 150 gap = 1; 151 for (i = x = 0; i < SP->_slk->maxlab; i++) { 152 SP->_slk->ent[i].x = x; 153 x += SP->_slk->maxlen; 154 x += (i == 3) ? gap : 1; 155 } 156 } 157 else 158 { 159 if (_nc_slk_format == 1) { /* 1 -> 3-2-3 */ 160 int gap = (cols - (SP->_slk->maxlab * SP->_slk->maxlen) - 5) / 2; 161 162 if (gap < 1) 163 gap = 1; 164 for (i = x = 0; i < SP->_slk->maxlab; i++) { 165 SP->_slk->ent[i].x = x; 166 x += SP->_slk->maxlen; 167 x += (i == 2 || i == 4) ? gap : 1; 168 } 169 } 170 else 171 goto exception; 172 } 173 } 174 SP->_slk->dirty = TRUE; 175 if ((SP->_slk->win = stwin) == NULL) 176 { 177 exception: 178 if (SP->_slk) 179 { 180 FreeIfNeeded(SP->_slk->buffer); 181 FreeIfNeeded(SP->_slk->ent); 182 free(SP->_slk); 183 SP->_slk = (SLK*)0; 184 res = (ERR); 185 } 186 } 187 188 /* We now reset the format so that the next newterm has again 189 * per default no SLK keys and may call slk_init again to 190 * define a new layout. (juergen 03-Mar-1999) 191 */ 192 SP->slk_format = _nc_slk_format; 193 _nc_slk_format = 0; 194 return(res); 195 } 196 197 198 /* 199 * Restore the soft labels on the screen. 200 */ 201 int 202 slk_restore(void) 203 { 204 T((T_CALLED("slk_restore()"))); 205 206 if (SP->_slk == NULL) 207 return(ERR); 208 SP->_slk->hidden = FALSE; 209 SP->_slk->dirty = TRUE; 210 /* we have to repaint info line eventually */ 211 slk_paint_info(SP->_slk->win); 212 213 returnCode(slk_refresh()); 214 } 215