/* $OpenBSD: lib_vidattr.c,v 1.3 1997/12/03 05:21:39 millert Exp $ */ /*************************************************************************** * COPYRIGHT NOTICE * **************************************************************************** * ncurses is copyright (C) 1992-1995 * * Zeyd M. Ben-Halim * * zmbenhal@netcom.com * * Eric S. Raymond * * esr@snark.thyrsus.com * * * * Permission is hereby granted to reproduce and distribute ncurses * * by any means and for any fee, whether alone or as part of a * * larger distribution, in source or in binary form, PROVIDED * * this notice is included with any such distribution, and is not * * removed from any of its header files. Mention of ncurses in any * * applications linked with it is highly appreciated. * * * * ncurses comes AS IS with no warranty, implied or expressed. * * * ***************************************************************************/ /* * 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("Id: lib_vidattr.c,v 1.17 1997/09/28 00:23:21 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; } int vidputs(attr_t newmode, int (*outc)(int)) { static attr_t previous_attr = A_NORMAL; attr_t turn_on, turn_off; int pair, current_pair; 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 (newmode == previous_attr) returnCode(OK); turn_off = (~newmode & previous_attr) & ALL_BUT_COLOR; turn_on = (newmode & ~previous_attr) & ALL_BUT_COLOR; pair = PAIR_NUMBER(newmode); current_pair = PAIR_NUMBER(previous_attr); /* if there is no current screen, assume we *can* do color */ if ((!SP || SP->_coloron) && pair == 0) { T(("old pair = %d -- new pair = %d", current_pair, pair)); if (pair != current_pair) { _nc_do_color(pair, outc); previous_attr &= ~A_COLOR; } } 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; } } else if (set_attributes) { 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; } } 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; } 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 there is no current screen, assume we *can* do color */ if ((!SP || SP->_coloron) && pair != 0) { current_pair = PAIR_NUMBER(previous_attr); T(("old pair = %d -- new pair = %d", current_pair, pair)); if (pair != current_pair) { _nc_do_color(pair, outc); } } if (SP) SP->_current_attr = newmode; else previous_attr = newmode; returnCode(OK); } #ifdef EXTERN_TERMINFO #undef vidattr #endif 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); }