diff options
Diffstat (limited to 'ncurses-5.3/ncurses/tty/lib_vidattr.c')
| -rw-r--r-- | ncurses-5.3/ncurses/tty/lib_vidattr.c | 310 |
1 files changed, 310 insertions, 0 deletions
diff --git a/ncurses-5.3/ncurses/tty/lib_vidattr.c b/ncurses-5.3/ncurses/tty/lib_vidattr.c new file mode 100644 index 0000000..27f7a14 --- /dev/null +++ b/ncurses-5.3/ncurses/tty/lib_vidattr.c @@ -0,0 +1,310 @@ +/**************************************************************************** + * Copyright (c) 1998,1999,2000,2001 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 <zmbenhal@netcom.com> 1992,1995 * + * and: Eric S. Raymond <esr@snark.thyrsus.com> * + ****************************************************************************/ + +/* + * 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 <curses.priv.h> +#include <term.h> + +MODULE_ID("$Id$") + +#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 (can_color && (why)) { \ + int old_pair = PAIR_NUMBER(old_attr); \ + TR(TRACE_ATTRS, ("old pair = %d -- new pair = %d", old_pair, pair)); \ + if ((pair != old_pair) \ + || (fix_pair0 && (pair == 0)) \ + || (reverse ^ ((old_attr & A_REVERSE) != 0))) { \ + _nc_do_color(old_pair, pair, reverse, outc); \ + } \ + } + +NCURSES_EXPORT(int) +vidputs +(chtype newmode, int (*outc) (int)) +{ + static attr_t previous_attr = A_NORMAL; + attr_t turn_on, turn_off; + int pair; + bool reverse = FALSE; + bool can_color = (SP == 0 || SP->_coloron); +#if NCURSES_EXT_FUNCS + bool fix_pair0 = (SP != 0 && SP->_coloron && !SP->_default_color); +#else +#define fix_pair0 FALSE +#endif + + 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; + + TR(TRACE_ATTRS, ("previous attribute was %s", _traceattr(previous_attr))); + +#if !USE_XMC_SUPPORT + if ((SP != 0) + && (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) != 0 + || fix_pair0) + && (no_color_video > 0)) { + /* + * If we had chosen the A_xxx definitions to correspond to the + * no_color_video mask, we could simply shift it up and mask off the + * attributes. But we did not (actually copied Solaris' definitions). + * However, this is still simpler/faster than a lookup table. + * + * The 63 corresponds to A_STANDOUT, A_UNDERLINE, A_REVERSE, A_BLINK, + * A_DIM, A_BOLD which are 1:1 with no_color_video. The bits that + * correspond to A_INVIS, A_PROTECT (192) must be shifted up 1 and + * A_ALTCHARSET (256) down 2 to line up. We use the NCURSES_BITS + * macro so this will work properly for the wide-character layout. + */ + unsigned value = no_color_video; + attr_t mask = NCURSES_BITS((value & 63) + | ((value & 192) << 1) + | ((value & 256) >> 2), 8); + + if ((mask & A_REVERSE) != 0 + && (newmode & A_REVERSE) != 0) { + reverse = TRUE; + mask &= ~A_REVERSE; + } + newmode &= ~mask; + } + + 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) && !fix_pair0), 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) { + if (exit_attribute_mode) { + doPut(exit_attribute_mode); + } else { + if (!SP || SP->_use_rmul) { + TurnOff(A_UNDERLINE, exit_underline_mode); + } + if (!SP || SP->_use_rmso) { + TurnOff(A_STANDOUT, exit_standout_mode); + } + } + previous_attr &= ~A_COLOR; + } + + SetColorsIf((pair != 0) || fix_pair0, previous_attr); + } 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; + } + SetColorsIf((pair != 0) || fix_pair0, previous_attr); + } else { + + TR(TRACE_ATTRS, ("turning %s off", _traceattr(turn_off))); + + TurnOff(A_ALTCHARSET, exit_alt_charset_mode); + + if (!SP || SP->_use_rmul) { + TurnOff(A_UNDERLINE, exit_underline_mode); + } + + if (!SP || SP->_use_rmso) { + 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) || fix_pair0, previous_attr); + + TR(TRACE_ATTRS, ("turning %s on", _traceattr(turn_on))); + /* *INDENT-OFF* */ + 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); +#ifdef enter_horizontal_hl_mode + TurnOn(A_HORIZONTAL, enter_horizontal_hl_mode); +#endif +#ifdef enter_left_hl_mode + TurnOn(A_LEFT, enter_left_hl_mode); +#endif +#ifdef enter_low_hl_mode + TurnOn(A_LOW, enter_low_hl_mode); +#endif +#ifdef enter_right_hl_mode + TurnOn(A_RIGHT, enter_right_hl_mode); +#endif +#ifdef enter_top_hl_mode + TurnOn(A_TOP, enter_top_hl_mode); +#endif +#ifdef enter_vertical_hl_mode + TurnOn(A_VERTICAL, enter_vertical_hl_mode); +#endif + /* *INDENT-ON* */ + + } + + if (reverse) + newmode |= A_REVERSE; + + if (SP) + SP->_current_attr = newmode; + else + previous_attr = newmode; + + returnCode(OK); +} + +NCURSES_EXPORT(int) +vidattr(chtype newmode) +{ + T((T_CALLED("vidattr(%s)"), _traceattr(newmode))); + + returnCode(vidputs(newmode, _nc_outch)); +} + +NCURSES_EXPORT(chtype) +termattrs(void) +{ + chtype attrs = A_NORMAL; + + T((T_CALLED("termattrs()"))); + 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; + + returnChar(attrs); +} |