1 /**************************************************************************** 2 * Copyright (c) 1998 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 * vidputs(newmode, outc) 36 * 37 * newmode is taken to be the logical 'or' of the symbols in curses.h 38 * representing graphic renditions. The terminal is set to be in all of 39 * the given modes, if possible. 40 * 41 * if the new attribute is normal 42 * if exit-alt-char-set exists 43 * emit it 44 * emit exit-attribute-mode 45 * else if set-attributes exists 46 * use it to set exactly what you want 47 * else 48 * if exit-attribute-mode exists 49 * turn off everything 50 * else 51 * turn off those which can be turned off and aren't in 52 * newmode. 53 * turn on each mode which should be on and isn't, one by one 54 * 55 * NOTE that this algorithm won't achieve the desired mix of attributes 56 * in some cases, but those are probably just those cases in which it is 57 * actually impossible, anyway, so... 58 * 59 * NOTE that we cannot assume that there's no interaction between color 60 * and other attribute resets. So each time we reset color (or other 61 * attributes) we'll have to be prepared to restore the other. 62 */ 63 64 #include <curses.priv.h> 65 #include <term.h> 66 67 MODULE_ID("$Id: lib_vidattr.c,v 1.23 1999/06/12 21:20:41 tom Exp $") 68 69 #define doPut(mode) TPUTS_TRACE(#mode); tputs(mode, 1, outc) 70 71 #define TurnOn(mask,mode) \ 72 if ((turn_on & mask) && mode) { doPut(mode); } 73 74 #define TurnOff(mask,mode) \ 75 if ((turn_off & mask) && mode) { doPut(mode); turn_off &= ~mask; } 76 77 /* if there is no current screen, assume we *can* do color */ 78 #define SetColorsIf(why,old_attr) \ 79 if ((!SP || SP->_coloron) && (why)) { \ 80 int old_pair = PAIR_NUMBER(old_attr); \ 81 T(("old pair = %d -- new pair = %d", old_pair, pair)); \ 82 if ((pair != old_pair) \ 83 || (reverse ^ ((old_attr & A_REVERSE) != 0))) { \ 84 _nc_do_color(pair, reverse, outc); \ 85 } \ 86 } 87 88 int vidputs(attr_t newmode, int (*outc)(int)) 89 { 90 static attr_t previous_attr = A_NORMAL; 91 attr_t turn_on, turn_off; 92 int pair; 93 bool reverse = FALSE; 94 bool used_ncv = FALSE; 95 96 T((T_CALLED("vidputs(%s)"), _traceattr(newmode))); 97 98 /* this allows us to go on whether or not newterm() has been called */ 99 if (SP) 100 previous_attr = SP->_current_attr; 101 102 T(("previous attribute was %s", _traceattr(previous_attr))); 103 104 #if !USE_XMC_SUPPORT 105 if ((SP != 0) 106 && (magic_cookie_glitch > 0)) 107 newmode &= ~(SP->_xmc_suppress); 108 #endif 109 110 /* 111 * If we have a terminal that cannot combine color with video 112 * attributes, use the colors in preference. 113 */ 114 if ((newmode & A_COLOR) 115 && (no_color_video > 0)) { 116 static const struct { 117 attr_t video; 118 unsigned bit; 119 } table[] = { 120 { A_STANDOUT, 1 }, 121 { A_UNDERLINE, 2 }, 122 { A_REVERSE, 4 }, 123 { A_BLINK, 8 }, 124 { A_DIM, 16 }, 125 { A_BOLD, 32 }, 126 { A_INVIS, 64 }, 127 { A_PROTECT, 128 }, 128 { A_ALTCHARSET, 256 }, 129 }; 130 size_t n; 131 for (n = 0; n < SIZEOF(table); n++) { 132 if ((table[n].bit & no_color_video) 133 && (table[n].video & newmode)) { 134 used_ncv = TRUE; 135 if (table[n].video == A_REVERSE) 136 reverse = TRUE; 137 else 138 newmode &= ~table[n].video; 139 } 140 } 141 } 142 143 if (newmode == previous_attr) 144 returnCode(OK); 145 146 pair = PAIR_NUMBER(newmode); 147 148 if (reverse) { 149 newmode &= ~A_REVERSE; 150 } 151 152 turn_off = (~newmode & previous_attr) & ALL_BUT_COLOR; 153 turn_on = (newmode & ~previous_attr) & ALL_BUT_COLOR; 154 155 SetColorsIf(pair == 0, previous_attr); 156 157 if (newmode == A_NORMAL) { 158 if((previous_attr & A_ALTCHARSET) && exit_alt_charset_mode) { 159 doPut(exit_alt_charset_mode); 160 previous_attr &= ~A_ALTCHARSET; 161 } 162 if (previous_attr) { 163 doPut(exit_attribute_mode); 164 previous_attr &= ~A_COLOR; 165 } 166 167 SetColorsIf(pair != 0, previous_attr); 168 } else if (set_attributes && !used_ncv) { 169 if (turn_on || turn_off) { 170 TPUTS_TRACE("set_attributes"); 171 tputs(tparm(set_attributes, 172 (newmode & A_STANDOUT) != 0, 173 (newmode & A_UNDERLINE) != 0, 174 (newmode & A_REVERSE) != 0, 175 (newmode & A_BLINK) != 0, 176 (newmode & A_DIM) != 0, 177 (newmode & A_BOLD) != 0, 178 (newmode & A_INVIS) != 0, 179 (newmode & A_PROTECT) != 0, 180 (newmode & A_ALTCHARSET) != 0), 1, outc); 181 previous_attr &= ~A_COLOR; 182 } 183 SetColorsIf(pair != 0, previous_attr); 184 } else { 185 186 T(("turning %s off", _traceattr(turn_off))); 187 188 TurnOff(A_ALTCHARSET, exit_alt_charset_mode); 189 190 if (!SP || SP->_use_rmul) { 191 TurnOff(A_UNDERLINE, exit_underline_mode); 192 } 193 194 if (!SP || SP->_use_rmso) { 195 TurnOff(A_STANDOUT, exit_standout_mode); 196 } 197 198 if (turn_off && exit_attribute_mode) { 199 doPut(exit_attribute_mode); 200 turn_on |= (newmode & (chtype)(~A_COLOR)); 201 previous_attr &= ~A_COLOR; 202 } 203 SetColorsIf(pair != 0, previous_attr); 204 205 T(("turning %s on", _traceattr(turn_on))); 206 207 TurnOn (A_ALTCHARSET, enter_alt_charset_mode); 208 TurnOn (A_BLINK, enter_blink_mode); 209 TurnOn (A_BOLD, enter_bold_mode); 210 TurnOn (A_DIM, enter_dim_mode); 211 TurnOn (A_REVERSE, enter_reverse_mode); 212 TurnOn (A_STANDOUT, enter_standout_mode); 213 TurnOn (A_PROTECT, enter_protected_mode); 214 TurnOn (A_INVIS, enter_secure_mode); 215 TurnOn (A_UNDERLINE, enter_underline_mode); 216 TurnOn (A_HORIZONTAL, enter_horizontal_hl_mode); 217 TurnOn (A_LEFT, enter_left_hl_mode); 218 TurnOn (A_LOW, enter_low_hl_mode); 219 TurnOn (A_RIGHT, enter_right_hl_mode); 220 TurnOn (A_TOP, enter_top_hl_mode); 221 TurnOn (A_VERTICAL, enter_vertical_hl_mode); 222 } 223 224 if (reverse) 225 newmode |= A_REVERSE; 226 227 if (SP) 228 SP->_current_attr = newmode; 229 else 230 previous_attr = newmode; 231 232 returnCode(OK); 233 } 234 235 int vidattr(attr_t newmode) 236 { 237 T((T_CALLED("vidattr(%s)"), _traceattr(newmode))); 238 239 returnCode(vidputs(newmode, _nc_outch)); 240 } 241 242 chtype termattrs(void) 243 { 244 chtype attrs = A_NORMAL; 245 246 if (enter_alt_charset_mode) 247 attrs |= A_ALTCHARSET; 248 249 if (enter_blink_mode) 250 attrs |= A_BLINK; 251 252 if (enter_bold_mode) 253 attrs |= A_BOLD; 254 255 if (enter_dim_mode) 256 attrs |= A_DIM; 257 258 if (enter_reverse_mode) 259 attrs |= A_REVERSE; 260 261 if (enter_standout_mode) 262 attrs |= A_STANDOUT; 263 264 if (enter_protected_mode) 265 attrs |= A_PROTECT; 266 267 if (enter_secure_mode) 268 attrs |= A_INVIS; 269 270 if (enter_underline_mode) 271 attrs |= A_UNDERLINE; 272 273 if (SP->_coloron) 274 attrs |= A_COLOR; 275 276 return(attrs); 277 } 278 279