1 /**************************************************************************** 2 * Copyright 2018-2019,2020 Thomas E. Dickey * 3 * Copyright 1998-2014,2017 Free Software Foundation, Inc. * 4 * * 5 * Permission is hereby granted, free of charge, to any person obtaining a * 6 * copy of this software and associated documentation files (the * 7 * "Software"), to deal in the Software without restriction, including * 8 * without limitation the rights to use, copy, modify, merge, publish, * 9 * distribute, distribute with modifications, sublicense, and/or sell * 10 * copies of the Software, and to permit persons to whom the Software is * 11 * furnished to do so, subject to the following conditions: * 12 * * 13 * The above copyright notice and this permission notice shall be included * 14 * in all copies or substantial portions of the Software. * 15 * * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 23 * * 24 * Except as contained in this notice, the name(s) of the above copyright * 25 * holders shall not be used in advertising or otherwise to promote the * 26 * sale, use or other dealings in this Software without prior written * 27 * authorization. * 28 ****************************************************************************/ 29 30 /**************************************************************************** 31 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * 32 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 33 * and: Thomas E. Dickey 1996-on * 34 * and: Juergen Pfeifer 2009 * 35 ****************************************************************************/ 36 37 /* 38 * vidputs(newmode, outc) 39 * 40 * newmode is taken to be the logical 'or' of the symbols in curses.h 41 * representing graphic renditions. The terminal is set to be in all of 42 * the given modes, if possible. 43 * 44 * if the new attribute is normal 45 * if exit-alt-char-set exists 46 * emit it 47 * emit exit-attribute-mode 48 * else if set-attributes exists 49 * use it to set exactly what you want 50 * else 51 * if exit-attribute-mode exists 52 * turn off everything 53 * else 54 * turn off those which can be turned off and aren't in 55 * newmode. 56 * turn on each mode which should be on and isn't, one by one 57 * 58 * NOTE that this algorithm won't achieve the desired mix of attributes 59 * in some cases, but those are probably just those cases in which it is 60 * actually impossible, anyway, so... 61 * 62 * NOTE that we cannot assume that there's no interaction between color 63 * and other attribute resets. So each time we reset color (or other 64 * attributes) we'll have to be prepared to restore the other. 65 */ 66 67 #include <curses.priv.h> 68 69 #ifndef CUR 70 #define CUR SP_TERMTYPE 71 #endif 72 73 MODULE_ID("$Id: lib_vidattr.c,v 1.76 2020/02/02 23:34:34 tom Exp $") 74 75 #define doPut(mode) \ 76 TPUTS_TRACE(#mode); \ 77 NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx mode, 1, outc) 78 79 #define TurnOn(mask, mode) \ 80 if ((turn_on & mask) && mode) { \ 81 TPUTS_TRACE(#mode); \ 82 NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx mode, 1, outc); \ 83 } 84 85 #define TurnOff(mask, mode) \ 86 if ((turn_off & mask) && mode) { \ 87 TPUTS_TRACE(#mode); \ 88 NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx mode, 1, outc); \ 89 turn_off &= ~mask; \ 90 } 91 92 /* if there is no current screen, assume we *can* do color */ 93 #define SetColorsIf(why, old_attr) \ 94 if (can_color && (why)) { \ 95 int old_pair = PairNumber(old_attr); \ 96 TR(TRACE_ATTRS, ("old pair = %d -- new pair = %d", old_pair, pair)); \ 97 if ((pair != old_pair) \ 98 || (fix_pair0 && (pair == 0)) \ 99 || (reverse ^ ((old_attr & A_REVERSE) != 0))) { \ 100 NCURSES_SP_NAME(_nc_do_color) (NCURSES_SP_ARGx \ 101 (short) old_pair, \ 102 (short) pair, \ 103 reverse, outc); \ 104 } \ 105 } 106 107 #define PreviousAttr _nc_prescreen.previous_attr 108 109 NCURSES_EXPORT(int) 110 NCURSES_SP_NAME(vidputs) (NCURSES_SP_DCLx 111 chtype newmode, 112 NCURSES_SP_OUTC outc) 113 { 114 attr_t turn_on, turn_off; 115 int pair; 116 bool reverse = FALSE; 117 bool can_color = (SP_PARM == 0 || SP_PARM->_coloron); 118 #if NCURSES_EXT_FUNCS 119 bool fix_pair0 = (SP_PARM != 0 && SP_PARM->_coloron && !SP_PARM->_default_color); 120 #else 121 #define fix_pair0 FALSE 122 #endif 123 124 newmode &= A_ATTRIBUTES; 125 126 T((T_CALLED("vidputs(%p,%s)"), (void *) SP_PARM, _traceattr(newmode))); 127 128 if (!IsValidTIScreen(SP_PARM)) 129 returnCode(ERR); 130 131 /* this allows us to go on whether or not newterm() has been called */ 132 if (SP_PARM) 133 PreviousAttr = AttrOf(SCREEN_ATTRS(SP_PARM)); 134 135 TR(TRACE_ATTRS, ("previous attribute was %s", _traceattr(PreviousAttr))); 136 137 if ((SP_PARM != 0) 138 && (magic_cookie_glitch > 0)) { 139 #if USE_XMC_SUPPORT 140 static const chtype table[] = 141 { 142 A_STANDOUT, 143 A_UNDERLINE, 144 A_REVERSE, 145 A_BLINK, 146 A_DIM, 147 A_BOLD, 148 A_INVIS, 149 A_PROTECT, 150 #if USE_ITALIC 151 A_ITALIC, 152 #endif 153 }; 154 unsigned n; 155 int used = 0; 156 #ifdef max_attributes /* not in U/Win */ 157 int limit = (max_attributes <= 0) ? 1 : max_attributes; 158 #else 159 int limit = 1; 160 #endif 161 chtype retain = 0; 162 163 /* 164 * Limit the number of attribute bits set in the newmode according to 165 * the terminfo max_attributes value. 166 */ 167 for (n = 0; n < SIZEOF(table); ++n) { 168 if ((table[n] & SP_PARM->_ok_attributes) == 0) { 169 newmode &= ~table[n]; 170 } else if ((table[n] & newmode) != 0) { 171 if (used++ >= limit) { 172 newmode &= ~table[n]; 173 if (newmode == retain) 174 break; 175 } else { 176 retain = newmode; 177 } 178 } 179 } 180 #else 181 newmode &= ~(SP_PARM->_xmc_suppress); 182 #endif 183 TR(TRACE_ATTRS, ("suppressed attribute is %s", _traceattr(newmode))); 184 } 185 186 /* 187 * If we have a terminal that cannot combine color with video 188 * attributes, use the colors in preference. 189 */ 190 if (((newmode & A_COLOR) != 0 191 || fix_pair0) 192 && (no_color_video > 0)) { 193 /* 194 * If we had chosen the A_xxx definitions to correspond to the 195 * no_color_video mask, we could simply shift it up and mask off the 196 * attributes. But we did not (actually copied Solaris' definitions). 197 * However, this is still simpler/faster than a lookup table. 198 * 199 * The 63 corresponds to A_STANDOUT, A_UNDERLINE, A_REVERSE, A_BLINK, 200 * A_DIM, A_BOLD which are 1:1 with no_color_video. The bits that 201 * correspond to A_INVIS, A_PROTECT (192) must be shifted up 1 and 202 * A_ALTCHARSET (256) down 2 to line up. We use the NCURSES_BITS 203 * macro so this will work properly for the wide-character layout. 204 */ 205 unsigned value = (unsigned) no_color_video; 206 attr_t mask = NCURSES_BITS((value & 63) 207 | ((value & 192) << 1) 208 | ((value & 256) >> 2), 8); 209 210 if ((mask & A_REVERSE) != 0 211 && (newmode & A_REVERSE) != 0) { 212 reverse = TRUE; 213 mask &= ~A_REVERSE; 214 } 215 newmode &= ~mask; 216 } 217 218 if (newmode == PreviousAttr) 219 returnCode(OK); 220 221 pair = PairNumber(newmode); 222 223 if (reverse) { 224 newmode &= ~A_REVERSE; 225 } 226 227 turn_off = (~newmode & PreviousAttr) & ALL_BUT_COLOR; 228 turn_on = (newmode & ~(PreviousAttr & TPARM_ATTR)) & ALL_BUT_COLOR; 229 230 SetColorsIf(((pair == 0) && !fix_pair0), PreviousAttr); 231 232 if (newmode == A_NORMAL) { 233 if ((PreviousAttr & A_ALTCHARSET) && exit_alt_charset_mode) { 234 doPut(exit_alt_charset_mode); 235 PreviousAttr &= ~A_ALTCHARSET; 236 } 237 if (PreviousAttr) { 238 if (exit_attribute_mode) { 239 doPut(exit_attribute_mode); 240 } else { 241 if (!SP_PARM || SP_PARM->_use_rmul) { 242 TurnOff(A_UNDERLINE, exit_underline_mode); 243 } 244 if (!SP_PARM || SP_PARM->_use_rmso) { 245 TurnOff(A_STANDOUT, exit_standout_mode); 246 } 247 #if USE_ITALIC 248 if (!SP_PARM || SP_PARM->_use_ritm) { 249 TurnOff(A_ITALIC, exit_italics_mode); 250 } 251 #endif 252 } 253 PreviousAttr &= ALL_BUT_COLOR; 254 } 255 256 SetColorsIf((pair != 0) || fix_pair0, PreviousAttr); 257 } else if (set_attributes) { 258 if (turn_on || turn_off) { 259 TPUTS_TRACE("set_attributes"); 260 NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx 261 tparm(set_attributes, 262 (newmode & A_STANDOUT) != 0, 263 (newmode & A_UNDERLINE) != 0, 264 (newmode & A_REVERSE) != 0, 265 (newmode & A_BLINK) != 0, 266 (newmode & A_DIM) != 0, 267 (newmode & A_BOLD) != 0, 268 (newmode & A_INVIS) != 0, 269 (newmode & A_PROTECT) != 0, 270 (newmode & A_ALTCHARSET) != 0), 271 1, outc); 272 PreviousAttr &= ALL_BUT_COLOR; 273 } 274 #if USE_ITALIC 275 if (!SP_PARM || SP_PARM->_use_ritm) { 276 if (turn_on & A_ITALIC) { 277 TurnOn(A_ITALIC, enter_italics_mode); 278 } else if (turn_off & A_ITALIC) { 279 TurnOff(A_ITALIC, exit_italics_mode); 280 } 281 } 282 #endif 283 SetColorsIf((pair != 0) || fix_pair0, PreviousAttr); 284 } else { 285 286 TR(TRACE_ATTRS, ("turning %s off", _traceattr(turn_off))); 287 288 TurnOff(A_ALTCHARSET, exit_alt_charset_mode); 289 290 if (!SP_PARM || SP_PARM->_use_rmul) { 291 TurnOff(A_UNDERLINE, exit_underline_mode); 292 } 293 294 if (!SP_PARM || SP_PARM->_use_rmso) { 295 TurnOff(A_STANDOUT, exit_standout_mode); 296 } 297 #if USE_ITALIC 298 if (!SP_PARM || SP_PARM->_use_ritm) { 299 TurnOff(A_ITALIC, exit_italics_mode); 300 } 301 #endif 302 if (turn_off && exit_attribute_mode) { 303 doPut(exit_attribute_mode); 304 turn_on |= (newmode & ALL_BUT_COLOR); 305 PreviousAttr &= ALL_BUT_COLOR; 306 } 307 SetColorsIf((pair != 0) || fix_pair0, PreviousAttr); 308 309 TR(TRACE_ATTRS, ("turning %s on", _traceattr(turn_on))); 310 /* *INDENT-OFF* */ 311 TurnOn(A_ALTCHARSET, enter_alt_charset_mode); 312 TurnOn(A_BLINK, enter_blink_mode); 313 TurnOn(A_BOLD, enter_bold_mode); 314 TurnOn(A_DIM, enter_dim_mode); 315 TurnOn(A_REVERSE, enter_reverse_mode); 316 TurnOn(A_STANDOUT, enter_standout_mode); 317 TurnOn(A_PROTECT, enter_protected_mode); 318 TurnOn(A_INVIS, enter_secure_mode); 319 TurnOn(A_UNDERLINE, enter_underline_mode); 320 #if USE_ITALIC 321 TurnOn(A_ITALIC, enter_italics_mode); 322 #endif 323 #if USE_WIDEC_SUPPORT && defined(enter_horizontal_hl_mode) 324 TurnOn(A_HORIZONTAL, enter_horizontal_hl_mode); 325 TurnOn(A_LEFT, enter_left_hl_mode); 326 TurnOn(A_LOW, enter_low_hl_mode); 327 TurnOn(A_RIGHT, enter_right_hl_mode); 328 TurnOn(A_TOP, enter_top_hl_mode); 329 TurnOn(A_VERTICAL, enter_vertical_hl_mode); 330 #endif 331 /* *INDENT-ON* */ 332 } 333 334 if (reverse) 335 newmode |= A_REVERSE; 336 337 if (SP_PARM) 338 SetAttr(SCREEN_ATTRS(SP_PARM), newmode); 339 else 340 PreviousAttr = newmode; 341 342 returnCode(OK); 343 } 344 345 #if NCURSES_SP_FUNCS 346 NCURSES_EXPORT(int) 347 vidputs(chtype newmode, NCURSES_OUTC outc) 348 { 349 SetSafeOutcWrapper(outc); 350 return NCURSES_SP_NAME(vidputs) (CURRENT_SCREEN, 351 newmode, 352 _nc_outc_wrapper); 353 } 354 #endif 355 356 NCURSES_EXPORT(int) 357 NCURSES_SP_NAME(vidattr) (NCURSES_SP_DCLx chtype newmode) 358 { 359 T((T_CALLED("vidattr(%p,%s)"), (void *) SP_PARM, _traceattr(newmode))); 360 returnCode(NCURSES_SP_NAME(vidputs) (NCURSES_SP_ARGx 361 newmode, 362 NCURSES_SP_NAME(_nc_putchar))); 363 } 364 365 #if NCURSES_SP_FUNCS 366 NCURSES_EXPORT(int) 367 vidattr(chtype newmode) 368 { 369 return NCURSES_SP_NAME(vidattr) (CURRENT_SCREEN, newmode); 370 } 371 #endif 372 373 NCURSES_EXPORT(chtype) 374 NCURSES_SP_NAME(termattrs) (NCURSES_SP_DCL0) 375 { 376 chtype attrs = A_NORMAL; 377 378 T((T_CALLED("termattrs(%p)"), (void *) SP_PARM)); 379 380 if (HasTerminal(SP_PARM)) { 381 #ifdef USE_TERM_DRIVER 382 attrs = CallDriver(SP_PARM, td_conattr); 383 #else /* ! USE_TERM_DRIVER */ 384 385 if (enter_alt_charset_mode) 386 attrs |= A_ALTCHARSET; 387 388 if (enter_blink_mode) 389 attrs |= A_BLINK; 390 391 if (enter_bold_mode) 392 attrs |= A_BOLD; 393 394 if (enter_dim_mode) 395 attrs |= A_DIM; 396 397 if (enter_reverse_mode) 398 attrs |= A_REVERSE; 399 400 if (enter_standout_mode) 401 attrs |= A_STANDOUT; 402 403 if (enter_protected_mode) 404 attrs |= A_PROTECT; 405 406 if (enter_secure_mode) 407 attrs |= A_INVIS; 408 409 if (enter_underline_mode) 410 attrs |= A_UNDERLINE; 411 412 if (SP_PARM->_coloron) 413 attrs |= A_COLOR; 414 415 #if USE_ITALIC 416 if (enter_italics_mode) 417 attrs |= A_ITALIC; 418 #endif 419 420 #endif /* USE_TERM_DRIVER */ 421 } 422 returnChtype(attrs); 423 } 424 425 #if NCURSES_SP_FUNCS 426 NCURSES_EXPORT(chtype) 427 termattrs(void) 428 { 429 return NCURSES_SP_NAME(termattrs) (CURRENT_SCREEN); 430 } 431 #endif 432