1 /**************************************************************************** 2 * Copyright (c) 1998-2009,2010 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 1.61 2010/06/05 22:22:04 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 }; 143 unsigned n; 144 int used = 0; 145 int limit = (max_attributes <= 0) ? 1 : max_attributes; 146 chtype retain = 0; 147 148 /* 149 * Limit the number of attribute bits set in the newmode according to 150 * the terminfo max_attributes value. 151 */ 152 for (n = 0; n < SIZEOF(table); ++n) { 153 if ((table[n] & SP_PARM->_ok_attributes) == 0) { 154 newmode &= ~table[n]; 155 } else if ((table[n] & newmode) != 0) { 156 if (used++ >= limit) { 157 newmode &= ~table[n]; 158 if (newmode == retain) 159 break; 160 } else { 161 retain = newmode; 162 } 163 } 164 } 165 #else 166 newmode &= ~(SP_PARM->_xmc_suppress); 167 #endif 168 TR(TRACE_ATTRS, ("suppressed attribute is %s", _traceattr(newmode))); 169 } 170 171 /* 172 * If we have a terminal that cannot combine color with video 173 * attributes, use the colors in preference. 174 */ 175 if (((newmode & A_COLOR) != 0 176 || fix_pair0) 177 && (no_color_video > 0)) { 178 /* 179 * If we had chosen the A_xxx definitions to correspond to the 180 * no_color_video mask, we could simply shift it up and mask off the 181 * attributes. But we did not (actually copied Solaris' definitions). 182 * However, this is still simpler/faster than a lookup table. 183 * 184 * The 63 corresponds to A_STANDOUT, A_UNDERLINE, A_REVERSE, A_BLINK, 185 * A_DIM, A_BOLD which are 1:1 with no_color_video. The bits that 186 * correspond to A_INVIS, A_PROTECT (192) must be shifted up 1 and 187 * A_ALTCHARSET (256) down 2 to line up. We use the NCURSES_BITS 188 * macro so this will work properly for the wide-character layout. 189 */ 190 unsigned value = (unsigned) no_color_video; 191 attr_t mask = NCURSES_BITS((value & 63) 192 | ((value & 192) << 1) 193 | ((value & 256) >> 2), 8); 194 195 if ((mask & A_REVERSE) != 0 196 && (newmode & A_REVERSE) != 0) { 197 reverse = TRUE; 198 mask &= ~A_REVERSE; 199 } 200 newmode &= ~mask; 201 } 202 203 if (newmode == PreviousAttr) 204 returnCode(OK); 205 206 pair = PairNumber(newmode); 207 208 if (reverse) { 209 newmode &= ~A_REVERSE; 210 } 211 212 turn_off = (~newmode & PreviousAttr) & ALL_BUT_COLOR; 213 turn_on = (newmode & ~PreviousAttr) & ALL_BUT_COLOR; 214 215 SetColorsIf(((pair == 0) && !fix_pair0), PreviousAttr); 216 217 if (newmode == A_NORMAL) { 218 if ((PreviousAttr & A_ALTCHARSET) && exit_alt_charset_mode) { 219 doPut(exit_alt_charset_mode); 220 PreviousAttr &= ~A_ALTCHARSET; 221 } 222 if (PreviousAttr) { 223 if (exit_attribute_mode) { 224 doPut(exit_attribute_mode); 225 } else { 226 if (!SP_PARM || SP_PARM->_use_rmul) { 227 TurnOff(A_UNDERLINE, exit_underline_mode); 228 } 229 if (!SP_PARM || SP_PARM->_use_rmso) { 230 TurnOff(A_STANDOUT, exit_standout_mode); 231 } 232 } 233 PreviousAttr &= ALL_BUT_COLOR; 234 } 235 236 SetColorsIf((pair != 0) || fix_pair0, PreviousAttr); 237 } else if (set_attributes) { 238 if (turn_on || turn_off) { 239 TPUTS_TRACE("set_attributes"); 240 NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx 241 tparm(set_attributes, 242 (newmode & A_STANDOUT) != 0, 243 (newmode & A_UNDERLINE) != 0, 244 (newmode & A_REVERSE) != 0, 245 (newmode & A_BLINK) != 0, 246 (newmode & A_DIM) != 0, 247 (newmode & A_BOLD) != 0, 248 (newmode & A_INVIS) != 0, 249 (newmode & A_PROTECT) != 0, 250 (newmode & A_ALTCHARSET) != 0), 251 1, outc); 252 PreviousAttr &= ALL_BUT_COLOR; 253 } 254 SetColorsIf((pair != 0) || fix_pair0, PreviousAttr); 255 } else { 256 257 TR(TRACE_ATTRS, ("turning %s off", _traceattr(turn_off))); 258 259 TurnOff(A_ALTCHARSET, exit_alt_charset_mode); 260 261 if (!SP_PARM || SP_PARM->_use_rmul) { 262 TurnOff(A_UNDERLINE, exit_underline_mode); 263 } 264 265 if (!SP_PARM || SP_PARM->_use_rmso) { 266 TurnOff(A_STANDOUT, exit_standout_mode); 267 } 268 269 if (turn_off && exit_attribute_mode) { 270 doPut(exit_attribute_mode); 271 turn_on |= (newmode & ALL_BUT_COLOR); 272 PreviousAttr &= ALL_BUT_COLOR; 273 } 274 SetColorsIf((pair != 0) || fix_pair0, PreviousAttr); 275 276 TR(TRACE_ATTRS, ("turning %s on", _traceattr(turn_on))); 277 /* *INDENT-OFF* */ 278 TurnOn(A_ALTCHARSET, enter_alt_charset_mode); 279 TurnOn(A_BLINK, enter_blink_mode); 280 TurnOn(A_BOLD, enter_bold_mode); 281 TurnOn(A_DIM, enter_dim_mode); 282 TurnOn(A_REVERSE, enter_reverse_mode); 283 TurnOn(A_STANDOUT, enter_standout_mode); 284 TurnOn(A_PROTECT, enter_protected_mode); 285 TurnOn(A_INVIS, enter_secure_mode); 286 TurnOn(A_UNDERLINE, enter_underline_mode); 287 #if USE_WIDEC_SUPPORT 288 TurnOn(A_HORIZONTAL, enter_horizontal_hl_mode); 289 TurnOn(A_LEFT, enter_left_hl_mode); 290 TurnOn(A_LOW, enter_low_hl_mode); 291 TurnOn(A_RIGHT, enter_right_hl_mode); 292 TurnOn(A_TOP, enter_top_hl_mode); 293 TurnOn(A_VERTICAL, enter_vertical_hl_mode); 294 #endif 295 /* *INDENT-ON* */ 296 297 } 298 299 if (reverse) 300 newmode |= A_REVERSE; 301 302 if (SP_PARM) 303 SetAttr(SCREEN_ATTRS(SP_PARM), newmode); 304 else 305 PreviousAttr = newmode; 306 307 returnCode(OK); 308 } 309 310 #if NCURSES_SP_FUNCS 311 NCURSES_EXPORT(int) 312 vidputs(chtype newmode, NCURSES_OUTC outc) 313 { 314 SetSafeOutcWrapper(outc); 315 return NCURSES_SP_NAME(vidputs) (CURRENT_SCREEN, 316 newmode, 317 _nc_outc_wrapper); 318 } 319 #endif 320 321 NCURSES_EXPORT(int) 322 NCURSES_SP_NAME(vidattr) (NCURSES_SP_DCLx chtype newmode) 323 { 324 T((T_CALLED("vidattr(%p,%s)"), (void *) SP_PARM, _traceattr(newmode))); 325 returnCode(NCURSES_SP_NAME(vidputs) (NCURSES_SP_ARGx 326 newmode, 327 NCURSES_SP_NAME(_nc_outch))); 328 } 329 330 #if NCURSES_SP_FUNCS 331 NCURSES_EXPORT(int) 332 vidattr(chtype newmode) 333 { 334 return NCURSES_SP_NAME(vidattr) (CURRENT_SCREEN, newmode); 335 } 336 #endif 337 338 NCURSES_EXPORT(chtype) 339 NCURSES_SP_NAME(termattrs) (NCURSES_SP_DCL0) 340 { 341 chtype attrs = A_NORMAL; 342 343 T((T_CALLED("termattrs(%p)"), (void *) SP_PARM)); 344 #ifdef USE_TERM_DRIVER 345 if (HasTerminal(SP_PARM)) 346 attrs = CallDriver(SP_PARM, conattr); 347 #else 348 349 if (enter_alt_charset_mode) 350 attrs |= A_ALTCHARSET; 351 352 if (enter_blink_mode) 353 attrs |= A_BLINK; 354 355 if (enter_bold_mode) 356 attrs |= A_BOLD; 357 358 if (enter_dim_mode) 359 attrs |= A_DIM; 360 361 if (enter_reverse_mode) 362 attrs |= A_REVERSE; 363 364 if (enter_standout_mode) 365 attrs |= A_STANDOUT; 366 367 if (enter_protected_mode) 368 attrs |= A_PROTECT; 369 370 if (enter_secure_mode) 371 attrs |= A_INVIS; 372 373 if (enter_underline_mode) 374 attrs |= A_UNDERLINE; 375 376 if (SP_PARM->_coloron) 377 attrs |= A_COLOR; 378 379 #endif 380 returnChtype(attrs); 381 } 382 383 #if NCURSES_SP_FUNCS 384 NCURSES_EXPORT(chtype) 385 termattrs(void) 386 { 387 return NCURSES_SP_NAME(termattrs) (CURRENT_SCREEN); 388 } 389 #endif 390