/* $OpenBSD: lib_vidattr.c,v 1.5 1998/08/03 17:02:46 millert Exp $ */ /**************************************************************************** * Copyright (c) 1998 Free Software Foundation, Inc. * * * * Permission is hereby granted, free of charge, to any person obtaining a * * copy of this software and associated documentation files (the * * "Software"), to deal in the Software without restriction, including * * without limitation the rights to use, copy, modify, merge, publish, * * distribute, distribute with modifications, sublicense, and/or sell * * copies of the Software, and to permit persons to whom the Software is * * furnished to do so, subject to the following conditions: * * * * The above copyright notice and this permission notice shall be included * * in all copies or substantial portions of the Software. * * * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * * * * Except as contained in this notice, the name(s) of the above copyright * * holders shall not be used in advertising or otherwise to promote the * * sale, use or other dealings in this Software without prior written * * authorization. * ****************************************************************************/ /**************************************************************************** * Author: Zeyd M. Ben-Halim 1992,1995 * * and: Eric S. Raymond * ****************************************************************************/ /* * vidputs(newmode, outc) * * newmode is taken to be the logical 'or' of the symbols in curses.h * representing graphic renditions. The terminal is set to be in all of * the given modes, if possible. * * if the new attribute is normal * if exit-alt-char-set exists * emit it * emit exit-attribute-mode * else if set-attributes exists * use it to set exactly what you want * else * if exit-attribute-mode exists * turn off everything * else * turn off those which can be turned off and aren't in * newmode. * turn on each mode which should be on and isn't, one by one * * NOTE that this algorithm won't achieve the desired mix of attributes * in some cases, but those are probably just those cases in which it is * actually impossible, anyway, so... * * NOTE that we cannot assume that there's no interaction between color * and other attribute resets. So each time we reset color (or other * attributes) we'll have to be prepared to restore the other. */ #include #include MODULE_ID("$From: lib_vidattr.c,v 1.21 1998/08/01 22:21:19 tom Exp $") #define doPut(mode) TPUTS_TRACE(#mode); tputs(mode, 1, outc) #define TurnOn(mask,mode) \ if ((turn_on & mask) && mode) { doPut(mode); } #define TurnOff(mask,mode) \ if ((turn_off & mask) && mode) { doPut(mode); turn_off &= ~mask; } /* if there is no current screen, assume we *can* do color */ #define SetColorsIf(why,old_attr) \ if ((!SP || SP->_coloron) && (why)) { \ int old_pair = PAIR_NUMBER(old_attr); \ T(("old pair = %d -- new pair = %d", old_pair, pair)); \ if ((pair != old_pair) \ || (reverse ^ ((old_attr & A_REVERSE) != 0))) { \ _nc_do_color(pair, reverse, outc); \ } \ } int vidputs(attr_t newmode, int (*outc)(int)) { static attr_t previous_attr = A_NORMAL; attr_t turn_on, turn_off; int pair; bool reverse = FALSE; bool used_ncv = FALSE; T((T_CALLED("vidputs(%s)"), _traceattr(newmode))); /* this allows us to go on whether or not newterm() has been called */ if (SP) previous_attr = SP->_current_attr; T(("previous attribute was %s", _traceattr(previous_attr))); #if !USE_XMC_SUPPORT if (magic_cookie_glitch > 0) newmode &= ~(SP->_xmc_suppress); #endif /* * If we have a terminal that cannot combine color with video * attributes, use the colors in preference. */ if ((newmode & A_COLOR) && (no_color_video > 0)) { static const struct { attr_t video; unsigned bit; } table[] = { { A_STANDOUT, 1 }, { A_UNDERLINE, 2 }, { A_REVERSE, 4 }, { A_BLINK, 8 }, { A_DIM, 16 }, { A_BOLD, 32 }, { A_INVIS, 64 }, { A_PROTECT, 128 }, { A_ALTCHARSET, 256 }, }; size_t n; for (n = 0; n < SIZEOF(table); n++) { if ((table[n].bit & no_color_video) && (table[n].video & newmode)) { used_ncv = TRUE; if (table[n].video == A_REVERSE) reverse = TRUE; else newmode &= ~table[n].video; } } } if (newmode == previous_attr) returnCode(OK); pair = PAIR_NUMBER(newmode); if (reverse) { newmode &= ~A_REVERSE; } turn_off = (~newmode & previous_attr) & ALL_BUT_COLOR; turn_on = (newmode & ~previous_attr) & ALL_BUT_COLOR; SetColorsIf(pair == 0, previous_attr); if (newmode == A_NORMAL) { if((previous_attr & A_ALTCHARSET) && exit_alt_charset_mode) { doPut(exit_alt_charset_mode); previous_attr &= ~A_ALTCHARSET; } if (previous_attr) { doPut(exit_attribute_mode); previous_attr &= ~A_COLOR; } SetColorsIf(pair != 0, previous_attr); } else if (set_attributes && !used_ncv) { if (turn_on || turn_off) { TPUTS_TRACE("set_attributes"); tputs(tparm(set_attributes, (newmode & A_STANDOUT) != 0, (newmode & A_UNDERLINE) != 0, (newmode & A_REVERSE) != 0, (newmode & A_BLINK) != 0, (newmode & A_DIM) != 0, (newmode & A_BOLD) != 0, (newmode & A_INVIS) != 0, (newmode & A_PROTECT) != 0, (newmode & A_ALTCHARSET) != 0), 1, outc); previous_attr &= ~A_COLOR; } SetColorsIf(pair != 0, previous_attr); } else { T(("turning %s off", _traceattr(turn_off))); TurnOff(A_ALTCHARSET, exit_alt_charset_mode); TurnOff(A_UNDERLINE, exit_underline_mode); TurnOff(A_STANDOUT, exit_standout_mode); if (turn_off && exit_attribute_mode) { doPut(exit_attribute_mode); turn_on |= (newmode & (chtype)(~A_COLOR)); previous_attr &= ~A_COLOR; } SetColorsIf(pair != 0, previous_attr); T(("turning %s on", _traceattr(turn_on))); TurnOn (A_ALTCHARSET, enter_alt_charset_mode); TurnOn (A_BLINK, enter_blink_mode); TurnOn (A_BOLD, enter_bold_mode); TurnOn (A_DIM, enter_dim_mode); TurnOn (A_REVERSE, enter_reverse_mode); TurnOn (A_STANDOUT, enter_standout_mode); TurnOn (A_PROTECT, enter_protected_mode); TurnOn (A_INVIS, enter_secure_mode); TurnOn (A_UNDERLINE, enter_underline_mode); TurnOn (A_HORIZONTAL, enter_horizontal_hl_mode); TurnOn (A_LEFT, enter_left_hl_mode); TurnOn (A_LOW, enter_low_hl_mode); TurnOn (A_RIGHT, enter_right_hl_mode); TurnOn (A_TOP, enter_top_hl_mode); TurnOn (A_VERTICAL, enter_vertical_hl_mode); } if (reverse) newmode |= A_REVERSE; if (SP) SP->_current_attr = newmode; else previous_attr = newmode; returnCode(OK); } int vidattr(attr_t newmode) { T((T_CALLED("vidattr(%s)"), _traceattr(newmode))); returnCode(vidputs(newmode, _nc_outch)); } chtype termattrs(void) { chtype attrs = A_NORMAL; if (enter_alt_charset_mode) attrs |= A_ALTCHARSET; if (enter_blink_mode) attrs |= A_BLINK; if (enter_bold_mode) attrs |= A_BOLD; if (enter_dim_mode) attrs |= A_DIM; if (enter_reverse_mode) attrs |= A_REVERSE; if (enter_standout_mode) attrs |= A_STANDOUT; if (enter_protected_mode) attrs |= A_PROTECT; if (enter_secure_mode) attrs |= A_INVIS; if (enter_underline_mode) attrs |= A_UNDERLINE; if (SP->_coloron) attrs |= A_COLOR; return(attrs); }