1 /**************************************************************************** 2 * Copyright (c) 1998,1999,2000,2001 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 1.39 2001/08/26 00:40:46 Philippe.Blain 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 (can_color && (why)) { \ 80 int old_pair = PAIR_NUMBER(old_attr); \ 81 TR(TRACE_ATTRS, ("old pair = %d -- new pair = %d", old_pair, pair)); \ 82 if ((pair != old_pair) \ 83 || (fix_pair0 && (pair == 0)) \ 84 || (reverse ^ ((old_attr & A_REVERSE) != 0))) { \ 85 _nc_do_color(old_pair, pair, reverse, outc); \ 86 } \ 87 } 88 89 NCURSES_EXPORT(int) 90 vidputs 91 (chtype newmode, int (*outc) (int)) 92 { 93 static attr_t previous_attr = A_NORMAL; 94 attr_t turn_on, turn_off; 95 int pair; 96 bool reverse = FALSE; 97 bool can_color = (SP == 0 || SP->_coloron); 98 #if NCURSES_EXT_FUNCS 99 bool fix_pair0 = (SP != 0 && SP->_coloron && !SP->_default_color); 100 #else 101 #define fix_pair0 FALSE 102 #endif 103 104 T((T_CALLED("vidputs(%s)"), _traceattr(newmode))); 105 106 /* this allows us to go on whether or not newterm() has been called */ 107 if (SP) 108 previous_attr = SP->_current_attr; 109 110 TR(TRACE_ATTRS, ("previous attribute was %s", _traceattr(previous_attr))); 111 112 #if !USE_XMC_SUPPORT 113 if ((SP != 0) 114 && (magic_cookie_glitch > 0)) 115 newmode &= ~(SP->_xmc_suppress); 116 #endif 117 118 /* 119 * If we have a terminal that cannot combine color with video 120 * attributes, use the colors in preference. 121 */ 122 if (((newmode & A_COLOR) != 0 123 || fix_pair0) 124 && (no_color_video > 0)) { 125 /* 126 * If we had chosen the A_xxx definitions to correspond to the 127 * no_color_video mask, we could simply shift it up and mask off the 128 * attributes. But we did not (actually copied Solaris' definitions). 129 * However, this is still simpler/faster than a lookup table. 130 * 131 * The 63 corresponds to A_STANDOUT, A_UNDERLINE, A_REVERSE, A_BLINK, 132 * A_DIM, A_BOLD which are 1:1 with no_color_video. The bits that 133 * correspond to A_INVIS, A_PROTECT (192) must be shifted up 1 and 134 * A_ALTCHARSET (256) down 2 to line up. We use the NCURSES_BITS 135 * macro so this will work properly for the wide-character layout. 136 */ 137 unsigned value = no_color_video; 138 attr_t mask = NCURSES_BITS((value & 63) 139 | ((value & 192) << 1) 140 | ((value & 256) >> 2), 8); 141 142 if ((mask & A_REVERSE) != 0 143 && (newmode & A_REVERSE) != 0) { 144 reverse = TRUE; 145 mask &= ~A_REVERSE; 146 } 147 newmode &= ~mask; 148 } 149 150 if (newmode == previous_attr) 151 returnCode(OK); 152 153 pair = PAIR_NUMBER(newmode); 154 155 if (reverse) { 156 newmode &= ~A_REVERSE; 157 } 158 159 turn_off = (~newmode & previous_attr) & ALL_BUT_COLOR; 160 turn_on = (newmode & ~previous_attr) & ALL_BUT_COLOR; 161 162 SetColorsIf(((pair == 0) && !fix_pair0), previous_attr); 163 164 if (newmode == A_NORMAL) { 165 if ((previous_attr & A_ALTCHARSET) && exit_alt_charset_mode) { 166 doPut(exit_alt_charset_mode); 167 previous_attr &= ~A_ALTCHARSET; 168 } 169 if (previous_attr) { 170 if (exit_attribute_mode) { 171 doPut(exit_attribute_mode); 172 } else { 173 if (!SP || SP->_use_rmul) { 174 TurnOff(A_UNDERLINE, exit_underline_mode); 175 } 176 if (!SP || SP->_use_rmso) { 177 TurnOff(A_STANDOUT, exit_standout_mode); 178 } 179 } 180 previous_attr &= ~A_COLOR; 181 } 182 183 SetColorsIf((pair != 0) || fix_pair0, previous_attr); 184 } else if (set_attributes) { 185 if (turn_on || turn_off) { 186 TPUTS_TRACE("set_attributes"); 187 tputs(tparm(set_attributes, 188 (newmode & A_STANDOUT) != 0, 189 (newmode & A_UNDERLINE) != 0, 190 (newmode & A_REVERSE) != 0, 191 (newmode & A_BLINK) != 0, 192 (newmode & A_DIM) != 0, 193 (newmode & A_BOLD) != 0, 194 (newmode & A_INVIS) != 0, 195 (newmode & A_PROTECT) != 0, 196 (newmode & A_ALTCHARSET) != 0), 1, outc); 197 previous_attr &= ~A_COLOR; 198 } 199 SetColorsIf((pair != 0) || fix_pair0, previous_attr); 200 } else { 201 202 TR(TRACE_ATTRS, ("turning %s off", _traceattr(turn_off))); 203 204 TurnOff(A_ALTCHARSET, exit_alt_charset_mode); 205 206 if (!SP || SP->_use_rmul) { 207 TurnOff(A_UNDERLINE, exit_underline_mode); 208 } 209 210 if (!SP || SP->_use_rmso) { 211 TurnOff(A_STANDOUT, exit_standout_mode); 212 } 213 214 if (turn_off && exit_attribute_mode) { 215 doPut(exit_attribute_mode); 216 turn_on |= (newmode & (chtype) (~A_COLOR)); 217 previous_attr &= ~A_COLOR; 218 } 219 SetColorsIf((pair != 0) || fix_pair0, previous_attr); 220 221 TR(TRACE_ATTRS, ("turning %s on", _traceattr(turn_on))); 222 /* *INDENT-OFF* */ 223 TurnOn(A_ALTCHARSET, enter_alt_charset_mode); 224 TurnOn(A_BLINK, enter_blink_mode); 225 TurnOn(A_BOLD, enter_bold_mode); 226 TurnOn(A_DIM, enter_dim_mode); 227 TurnOn(A_REVERSE, enter_reverse_mode); 228 TurnOn(A_STANDOUT, enter_standout_mode); 229 TurnOn(A_PROTECT, enter_protected_mode); 230 TurnOn(A_INVIS, enter_secure_mode); 231 TurnOn(A_UNDERLINE, enter_underline_mode); 232 #ifdef enter_horizontal_hl_mode 233 TurnOn(A_HORIZONTAL, enter_horizontal_hl_mode); 234 #endif 235 #ifdef enter_left_hl_mode 236 TurnOn(A_LEFT, enter_left_hl_mode); 237 #endif 238 #ifdef enter_low_hl_mode 239 TurnOn(A_LOW, enter_low_hl_mode); 240 #endif 241 #ifdef enter_right_hl_mode 242 TurnOn(A_RIGHT, enter_right_hl_mode); 243 #endif 244 #ifdef enter_top_hl_mode 245 TurnOn(A_TOP, enter_top_hl_mode); 246 #endif 247 #ifdef enter_vertical_hl_mode 248 TurnOn(A_VERTICAL, enter_vertical_hl_mode); 249 #endif 250 /* *INDENT-ON* */ 251 252 } 253 254 if (reverse) 255 newmode |= A_REVERSE; 256 257 if (SP) 258 SP->_current_attr = newmode; 259 else 260 previous_attr = newmode; 261 262 returnCode(OK); 263 } 264 265 NCURSES_EXPORT(int) 266 vidattr(chtype newmode) 267 { 268 T((T_CALLED("vidattr(%s)"), _traceattr(newmode))); 269 270 returnCode(vidputs(newmode, _nc_outch)); 271 } 272 273 NCURSES_EXPORT(chtype) 274 termattrs(void) 275 { 276 chtype attrs = A_NORMAL; 277 278 T((T_CALLED("termattrs()"))); 279 if (enter_alt_charset_mode) 280 attrs |= A_ALTCHARSET; 281 282 if (enter_blink_mode) 283 attrs |= A_BLINK; 284 285 if (enter_bold_mode) 286 attrs |= A_BOLD; 287 288 if (enter_dim_mode) 289 attrs |= A_DIM; 290 291 if (enter_reverse_mode) 292 attrs |= A_REVERSE; 293 294 if (enter_standout_mode) 295 attrs |= A_STANDOUT; 296 297 if (enter_protected_mode) 298 attrs |= A_PROTECT; 299 300 if (enter_secure_mode) 301 attrs |= A_INVIS; 302 303 if (enter_underline_mode) 304 attrs |= A_UNDERLINE; 305 306 if (SP->_coloron) 307 attrs |= A_COLOR; 308 309 returnChar(attrs); 310 } 311