1 /**************************************************************************** 2 * Copyright (c) 1998-2013,2014 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 * and: Thomas E. Dickey 1996-on * 33 * and: Juergen Pfeifer 2009 * 34 ****************************************************************************/ 35 36 /* 37 * vidputs(newmode, outc) 38 * 39 * newmode is taken to be the logical 'or' of the symbols in curses.h 40 * representing graphic renditions. The terminal is set to be in all of 41 * the given modes, if possible. 42 * 43 * if the new attribute is normal 44 * if exit-alt-char-set exists 45 * emit it 46 * emit exit-attribute-mode 47 * else if set-attributes exists 48 * use it to set exactly what you want 49 * else 50 * if exit-attribute-mode exists 51 * turn off everything 52 * else 53 * turn off those which can be turned off and aren't in 54 * newmode. 55 * turn on each mode which should be on and isn't, one by one 56 * 57 * NOTE that this algorithm won't achieve the desired mix of attributes 58 * in some cases, but those are probably just those cases in which it is 59 * actually impossible, anyway, so... 60 * 61 * NOTE that we cannot assume that there's no interaction between color 62 * and other attribute resets. So each time we reset color (or other 63 * attributes) we'll have to be prepared to restore the other. 64 */ 65 66 #include <curses.priv.h> 67 68 #ifndef CUR 69 #define CUR SP_TERMTYPE 70 #endif 71 72 MODULE_ID("$Id: lib_vidattr.c,v 1.71 2014/09/04 22:01:27 tom Exp $") 73 74 #define doPut(mode) \ 75 TPUTS_TRACE(#mode); \ 76 NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx mode, 1, outc) 77 78 #define TurnOn(mask, mode) \ 79 if ((turn_on & mask) && mode) { doPut(mode); } 80 81 #define TurnOff(mask, mode) \ 82 if ((turn_off & mask) && mode) { doPut(mode); turn_off &= ~mask; } 83 84 /* if there is no current screen, assume we *can* do color */ 85 #define SetColorsIf(why, old_attr) \ 86 if (can_color && (why)) { \ 87 int old_pair = PairNumber(old_attr); \ 88 TR(TRACE_ATTRS, ("old pair = %d -- new pair = %d", old_pair, pair)); \ 89 if ((pair != old_pair) \ 90 || (fix_pair0 && (pair == 0)) \ 91 || (reverse ^ ((old_attr & A_REVERSE) != 0))) { \ 92 NCURSES_SP_NAME(_nc_do_color) (NCURSES_SP_ARGx \ 93 (short) old_pair, \ 94 (short) pair, \ 95 reverse, outc); \ 96 } \ 97 } 98 99 #define PreviousAttr _nc_prescreen.previous_attr 100 101 NCURSES_EXPORT(int) 102 NCURSES_SP_NAME(vidputs) (NCURSES_SP_DCLx 103 chtype newmode, 104 NCURSES_SP_OUTC outc) 105 { 106 attr_t turn_on, turn_off; 107 int pair; 108 bool reverse = FALSE; 109 bool can_color = (SP_PARM == 0 || SP_PARM->_coloron); 110 #if NCURSES_EXT_FUNCS 111 bool fix_pair0 = (SP_PARM != 0 && SP_PARM->_coloron && !SP_PARM->_default_color); 112 #else 113 #define fix_pair0 FALSE 114 #endif 115 116 newmode &= A_ATTRIBUTES; 117 118 T((T_CALLED("vidputs(%p,%s)"), (void *) SP_PARM, _traceattr(newmode))); 119 120 if (!IsTermInfo(SP_PARM)) 121 returnCode(ERR); 122 123 /* this allows us to go on whether or not newterm() has been called */ 124 if (SP_PARM) 125 PreviousAttr = AttrOf(SCREEN_ATTRS(SP_PARM)); 126 127 TR(TRACE_ATTRS, ("previous attribute was %s", _traceattr(PreviousAttr))); 128 129 if ((SP_PARM != 0) 130 && (magic_cookie_glitch > 0)) { 131 #if USE_XMC_SUPPORT 132 static const chtype table[] = 133 { 134 A_STANDOUT, 135 A_UNDERLINE, 136 A_REVERSE, 137 A_BLINK, 138 A_DIM, 139 A_BOLD, 140 A_INVIS, 141 A_PROTECT, 142 #if USE_ITALIC 143 A_ITALIC, 144 #endif 145 }; 146 unsigned n; 147 int used = 0; 148 int limit = (max_attributes <= 0) ? 1 : max_attributes; 149 chtype retain = 0; 150 151 /* 152 * Limit the number of attribute bits set in the newmode according to 153 * the terminfo max_attributes value. 154 */ 155 for (n = 0; n < SIZEOF(table); ++n) { 156 if ((table[n] & SP_PARM->_ok_attributes) == 0) { 157 newmode &= ~table[n]; 158 } else if ((table[n] & newmode) != 0) { 159 if (used++ >= limit) { 160 newmode &= ~table[n]; 161 if (newmode == retain) 162 break; 163 } else { 164 retain = newmode; 165 } 166 } 167 } 168 #else 169 newmode &= ~(SP_PARM->_xmc_suppress); 170 #endif 171 TR(TRACE_ATTRS, ("suppressed attribute is %s", _traceattr(newmode))); 172 } 173 174 /* 175 * If we have a terminal that cannot combine color with video 176 * attributes, use the colors in preference. 177 */ 178 if (((newmode & A_COLOR) != 0 179 || fix_pair0) 180 && (no_color_video > 0)) { 181 /* 182 * If we had chosen the A_xxx definitions to correspond to the 183 * no_color_video mask, we could simply shift it up and mask off the 184 * attributes. But we did not (actually copied Solaris' definitions). 185 * However, this is still simpler/faster than a lookup table. 186 * 187 * The 63 corresponds to A_STANDOUT, A_UNDERLINE, A_REVERSE, A_BLINK, 188 * A_DIM, A_BOLD which are 1:1 with no_color_video. The bits that 189 * correspond to A_INVIS, A_PROTECT (192) must be shifted up 1 and 190 * A_ALTCHARSET (256) down 2 to line up. We use the NCURSES_BITS 191 * macro so this will work properly for the wide-character layout. 192 */ 193 unsigned value = (unsigned) no_color_video; 194 attr_t mask = NCURSES_BITS((value & 63) 195 | ((value & 192) << 1) 196 | ((value & 256) >> 2), 8); 197 198 if ((mask & A_REVERSE) != 0 199 && (newmode & A_REVERSE) != 0) { 200 reverse = TRUE; 201 mask &= ~A_REVERSE; 202 } 203 newmode &= ~mask; 204 } 205 206 if (newmode == PreviousAttr) 207 returnCode(OK); 208 209 pair = PairNumber(newmode); 210 211 if (reverse) { 212 newmode &= ~A_REVERSE; 213 } 214 215 turn_off = (~newmode & PreviousAttr) & ALL_BUT_COLOR; 216 turn_on = (newmode & ~(PreviousAttr & TPARM_ATTR)) & ALL_BUT_COLOR; 217 218 SetColorsIf(((pair == 0) && !fix_pair0), PreviousAttr); 219 220 if (newmode == A_NORMAL) { 221 if ((PreviousAttr & A_ALTCHARSET) && exit_alt_charset_mode) { 222 doPut(exit_alt_charset_mode); 223 PreviousAttr &= ~A_ALTCHARSET; 224 } 225 if (PreviousAttr) { 226 if (exit_attribute_mode) { 227 doPut(exit_attribute_mode); 228 } else { 229 if (!SP_PARM || SP_PARM->_use_rmul) { 230 TurnOff(A_UNDERLINE, exit_underline_mode); 231 } 232 if (!SP_PARM || SP_PARM->_use_rmso) { 233 TurnOff(A_STANDOUT, exit_standout_mode); 234 } 235 #if USE_ITALIC 236 if (!SP_PARM || SP_PARM->_use_ritm) { 237 TurnOff(A_ITALIC, exit_italics_mode); 238 } 239 #endif 240 } 241 PreviousAttr &= ALL_BUT_COLOR; 242 } 243 244 SetColorsIf((pair != 0) || fix_pair0, PreviousAttr); 245 } else if (set_attributes) { 246 if (turn_on || turn_off) { 247 TPUTS_TRACE("set_attributes"); 248 NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx 249 tparm(set_attributes, 250 (newmode & A_STANDOUT) != 0, 251 (newmode & A_UNDERLINE) != 0, 252 (newmode & A_REVERSE) != 0, 253 (newmode & A_BLINK) != 0, 254 (newmode & A_DIM) != 0, 255 (newmode & A_BOLD) != 0, 256 (newmode & A_INVIS) != 0, 257 (newmode & A_PROTECT) != 0, 258 (newmode & A_ALTCHARSET) != 0), 259 1, outc); 260 PreviousAttr &= ALL_BUT_COLOR; 261 } 262 #if USE_ITALIC 263 if (!SP_PARM || SP_PARM->_use_ritm) { 264 if (turn_on & A_ITALIC) { 265 TurnOn(A_ITALIC, enter_italics_mode); 266 } else if (turn_off & A_ITALIC) { 267 TurnOff(A_ITALIC, exit_italics_mode); 268 } 269 } 270 #endif 271 SetColorsIf((pair != 0) || fix_pair0, PreviousAttr); 272 } else { 273 274 TR(TRACE_ATTRS, ("turning %s off", _traceattr(turn_off))); 275 276 TurnOff(A_ALTCHARSET, exit_alt_charset_mode); 277 278 if (!SP_PARM || SP_PARM->_use_rmul) { 279 TurnOff(A_UNDERLINE, exit_underline_mode); 280 } 281 282 if (!SP_PARM || SP_PARM->_use_rmso) { 283 TurnOff(A_STANDOUT, exit_standout_mode); 284 } 285 #if USE_ITALIC 286 if (!SP_PARM || SP_PARM->_use_ritm) { 287 TurnOff(A_ITALIC, exit_italics_mode); 288 } 289 #endif 290 if (turn_off && exit_attribute_mode) { 291 doPut(exit_attribute_mode); 292 turn_on |= (newmode & ALL_BUT_COLOR); 293 PreviousAttr &= ALL_BUT_COLOR; 294 } 295 SetColorsIf((pair != 0) || fix_pair0, PreviousAttr); 296 297 TR(TRACE_ATTRS, ("turning %s on", _traceattr(turn_on))); 298 /* *INDENT-OFF* */ 299 TurnOn(A_ALTCHARSET, enter_alt_charset_mode); 300 TurnOn(A_BLINK, enter_blink_mode); 301 TurnOn(A_BOLD, enter_bold_mode); 302 TurnOn(A_DIM, enter_dim_mode); 303 TurnOn(A_REVERSE, enter_reverse_mode); 304 TurnOn(A_STANDOUT, enter_standout_mode); 305 TurnOn(A_PROTECT, enter_protected_mode); 306 TurnOn(A_INVIS, enter_secure_mode); 307 TurnOn(A_UNDERLINE, enter_underline_mode); 308 #if USE_ITALIC 309 TurnOn(A_ITALIC, enter_italics_mode); 310 #endif 311 #if USE_WIDEC_SUPPORT 312 TurnOn(A_HORIZONTAL, enter_horizontal_hl_mode); 313 TurnOn(A_LEFT, enter_left_hl_mode); 314 TurnOn(A_LOW, enter_low_hl_mode); 315 TurnOn(A_RIGHT, enter_right_hl_mode); 316 TurnOn(A_TOP, enter_top_hl_mode); 317 TurnOn(A_VERTICAL, enter_vertical_hl_mode); 318 #endif 319 /* *INDENT-ON* */ 320 321 } 322 323 if (reverse) 324 newmode |= A_REVERSE; 325 326 if (SP_PARM) 327 SetAttr(SCREEN_ATTRS(SP_PARM), newmode); 328 else 329 PreviousAttr = newmode; 330 331 returnCode(OK); 332 } 333 334 #if NCURSES_SP_FUNCS 335 NCURSES_EXPORT(int) 336 vidputs(chtype newmode, NCURSES_OUTC outc) 337 { 338 SetSafeOutcWrapper(outc); 339 return NCURSES_SP_NAME(vidputs) (CURRENT_SCREEN, 340 newmode, 341 _nc_outc_wrapper); 342 } 343 #endif 344 345 NCURSES_EXPORT(int) 346 NCURSES_SP_NAME(vidattr) (NCURSES_SP_DCLx chtype newmode) 347 { 348 T((T_CALLED("vidattr(%p,%s)"), (void *) SP_PARM, _traceattr(newmode))); 349 returnCode(NCURSES_SP_NAME(vidputs) (NCURSES_SP_ARGx 350 newmode, 351 NCURSES_SP_NAME(_nc_putchar))); 352 } 353 354 #if NCURSES_SP_FUNCS 355 NCURSES_EXPORT(int) 356 vidattr(chtype newmode) 357 { 358 return NCURSES_SP_NAME(vidattr) (CURRENT_SCREEN, newmode); 359 } 360 #endif 361 362 NCURSES_EXPORT(chtype) 363 NCURSES_SP_NAME(termattrs) (NCURSES_SP_DCL0) 364 { 365 chtype attrs = A_NORMAL; 366 367 T((T_CALLED("termattrs(%p)"), (void *) SP_PARM)); 368 369 if (HasTerminal(SP_PARM)) { 370 #ifdef USE_TERM_DRIVER 371 attrs = CallDriver(SP_PARM, td_conattr); 372 #else /* ! USE_TERM_DRIVER */ 373 374 if (enter_alt_charset_mode) 375 attrs |= A_ALTCHARSET; 376 377 if (enter_blink_mode) 378 attrs |= A_BLINK; 379 380 if (enter_bold_mode) 381 attrs |= A_BOLD; 382 383 if (enter_dim_mode) 384 attrs |= A_DIM; 385 386 if (enter_reverse_mode) 387 attrs |= A_REVERSE; 388 389 if (enter_standout_mode) 390 attrs |= A_STANDOUT; 391 392 if (enter_protected_mode) 393 attrs |= A_PROTECT; 394 395 if (enter_secure_mode) 396 attrs |= A_INVIS; 397 398 if (enter_underline_mode) 399 attrs |= A_UNDERLINE; 400 401 if (SP_PARM->_coloron) 402 attrs |= A_COLOR; 403 404 #if USE_ITALIC 405 if (enter_italics_mode) 406 attrs |= A_ITALIC; 407 #endif 408 409 #endif /* USE_TERM_DRIVER */ 410 } 411 returnChtype(attrs); 412 } 413 414 #if NCURSES_SP_FUNCS 415 NCURSES_EXPORT(chtype) 416 termattrs(void) 417 { 418 return NCURSES_SP_NAME(termattrs) (CURRENT_SCREEN); 419 } 420 #endif 421