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/* $OpenBSD: lib_vidattr.c,v 1.9 2010/01/12 23:22:07 nicm Exp $ */ |
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/**************************************************************************** |
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* Copyright (c) 1998-2006,2007 Free Software Foundation, Inc. * |
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* * |
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* Permission is hereby granted, free of charge, to any person obtaining a * |
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* copy of this software and associated documentation files (the * |
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* "Software"), to deal in the Software without restriction, including * |
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* without limitation the rights to use, copy, modify, merge, publish, * |
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* distribute, distribute with modifications, sublicense, and/or sell * |
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* copies of the Software, and to permit persons to whom the Software is * |
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* furnished to do so, subject to the following conditions: * |
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* * |
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* The above copyright notice and this permission notice shall be included * |
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* in all copies or substantial portions of the Software. * |
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* * |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * |
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * |
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * |
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * |
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * |
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. * |
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* * |
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* Except as contained in this notice, the name(s) of the above copyright * |
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* holders shall not be used in advertising or otherwise to promote the * |
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* sale, use or other dealings in this Software without prior written * |
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* authorization. * |
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****************************************************************************/ |
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/**************************************************************************** |
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* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * |
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* and: Eric S. Raymond <esr@snark.thyrsus.com> * |
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* and: Thomas E. Dickey 1996 on * |
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****************************************************************************/ |
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/* |
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* vidputs(newmode, outc) |
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* |
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* newmode is taken to be the logical 'or' of the symbols in curses.h |
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* representing graphic renditions. The terminal is set to be in all of |
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* the given modes, if possible. |
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* |
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* if the new attribute is normal |
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* if exit-alt-char-set exists |
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* emit it |
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* emit exit-attribute-mode |
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* else if set-attributes exists |
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* use it to set exactly what you want |
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* else |
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* if exit-attribute-mode exists |
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* turn off everything |
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* else |
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* turn off those which can be turned off and aren't in |
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* newmode. |
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* turn on each mode which should be on and isn't, one by one |
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* |
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* NOTE that this algorithm won't achieve the desired mix of attributes |
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* in some cases, but those are probably just those cases in which it is |
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* actually impossible, anyway, so... |
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* |
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* NOTE that we cannot assume that there's no interaction between color |
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* and other attribute resets. So each time we reset color (or other |
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* attributes) we'll have to be prepared to restore the other. |
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*/ |
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#include <curses.priv.h> |
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#include <term.h> |
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MODULE_ID("$Id: lib_vidattr.c,v 1.9 2010/01/12 23:22:07 nicm Exp $") |
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#define doPut(mode) TPUTS_TRACE(#mode); tputs(mode, 1, outc) |
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#define TurnOn(mask,mode) \ |
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if ((turn_on & mask) && mode) { doPut(mode); } |
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#define TurnOff(mask,mode) \ |
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if ((turn_off & mask) && mode) { doPut(mode); turn_off &= ~mask; } |
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/* if there is no current screen, assume we *can* do color */ |
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#define SetColorsIf(why,old_attr) \ |
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if (can_color && (why)) { \ |
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int old_pair = PAIR_NUMBER(old_attr); \ |
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TR(TRACE_ATTRS, ("old pair = %d -- new pair = %d", old_pair, pair)); \ |
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if ((pair != old_pair) \ |
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|| (fix_pair0 && (pair == 0)) \ |
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|| (reverse ^ ((old_attr & A_REVERSE) != 0))) { \ |
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_nc_do_color(old_pair, pair, reverse, outc); \ |
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} \ |
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} |
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#define PreviousAttr _nc_prescreen.previous_attr |
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NCURSES_EXPORT(int) |
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vidputs(chtype newmode, int (*outc) (int)) |
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{ |
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attr_t turn_on, turn_off; |
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int pair; |
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bool reverse = FALSE; |
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bool can_color = (SP == 0 || SP->_coloron); |
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#if NCURSES_EXT_FUNCS |
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bool fix_pair0 = (SP != 0 && SP->_coloron && !SP->_default_color); |
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#else |
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#define fix_pair0 FALSE |
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#endif |
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newmode &= A_ATTRIBUTES; |
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T((T_CALLED("vidputs(%s)"), _traceattr(newmode))); |
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/* this allows us to go on whether or not newterm() has been called */ |
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if (SP) |
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PreviousAttr = AttrOf(SCREEN_ATTRS(SP)); |
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TR(TRACE_ATTRS, ("previous attribute was %s", _traceattr(PreviousAttr))); |
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if ((SP != 0) |
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&& (magic_cookie_glitch > 0)) { |
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#if USE_XMC_SUPPORT |
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static const chtype table[] = |
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{ |
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A_STANDOUT, |
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A_UNDERLINE, |
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A_REVERSE, |
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A_BLINK, |
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A_DIM, |
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A_BOLD, |
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A_INVIS, |
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A_PROTECT, |
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}; |
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unsigned n; |
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int used = 0; |
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int limit = (max_attributes <= 0) ? 1 : max_attributes; |
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chtype retain = 0; |
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/* |
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* Limit the number of attribute bits set in the newmode according to |
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* the terminfo max_attributes value. |
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*/ |
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for (n = 0; n < SIZEOF(table); ++n) { |
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if ((table[n] & SP->_ok_attributes) == 0) { |
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newmode &= ~table[n]; |
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} else if ((table[n] & newmode) != 0) { |
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if (used++ >= limit) { |
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newmode &= ~table[n]; |
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if (newmode == retain) |
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break; |
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} else { |
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retain = newmode; |
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} |
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} |
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} |
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#else |
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newmode &= ~(SP->_xmc_suppress); |
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#endif |
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TR(TRACE_ATTRS, ("suppressed attribute is %s", _traceattr(newmode))); |
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} |
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/* |
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* If we have a terminal that cannot combine color with video |
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* attributes, use the colors in preference. |
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*/ |
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if (((newmode & A_COLOR) != 0 |
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|| fix_pair0) |
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&& (no_color_video > 0)) { |
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/* |
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* If we had chosen the A_xxx definitions to correspond to the |
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* no_color_video mask, we could simply shift it up and mask off the |
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* attributes. But we did not (actually copied Solaris' definitions). |
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* However, this is still simpler/faster than a lookup table. |
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* |
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* The 63 corresponds to A_STANDOUT, A_UNDERLINE, A_REVERSE, A_BLINK, |
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* A_DIM, A_BOLD which are 1:1 with no_color_video. The bits that |
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* correspond to A_INVIS, A_PROTECT (192) must be shifted up 1 and |
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* A_ALTCHARSET (256) down 2 to line up. We use the NCURSES_BITS |
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* macro so this will work properly for the wide-character layout. |
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*/ |
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unsigned value = no_color_video; |
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attr_t mask = NCURSES_BITS((value & 63) |
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| ((value & 192) << 1) |
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| ((value & 256) >> 2), 8); |
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if ((mask & A_REVERSE) != 0 |
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&& (newmode & A_REVERSE) != 0) { |
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reverse = TRUE; |
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mask &= ~A_REVERSE; |
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} |
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newmode &= ~mask; |
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} |
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if (newmode == PreviousAttr) |
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returnCode(OK); |
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pair = PAIR_NUMBER(newmode); |
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if (reverse) { |
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newmode &= ~A_REVERSE; |
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} |
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turn_off = (~newmode & PreviousAttr) & ALL_BUT_COLOR; |
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turn_on = (newmode & ~PreviousAttr) & ALL_BUT_COLOR; |
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SetColorsIf(((pair == 0) && !fix_pair0), PreviousAttr); |
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if (newmode == A_NORMAL) { |
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if ((PreviousAttr & A_ALTCHARSET) && exit_alt_charset_mode) { |
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doPut(exit_alt_charset_mode); |
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PreviousAttr &= ~A_ALTCHARSET; |
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} |
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if (PreviousAttr) { |
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if (exit_attribute_mode) { |
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doPut(exit_attribute_mode); |
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} else { |
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if (!SP || SP->_use_rmul) { |
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TurnOff(A_UNDERLINE, exit_underline_mode); |
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} |
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if (!SP || SP->_use_rmso) { |
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TurnOff(A_STANDOUT, exit_standout_mode); |
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} |
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} |
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PreviousAttr &= ALL_BUT_COLOR; |
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} |
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SetColorsIf((pair != 0) || fix_pair0, PreviousAttr); |
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} else if (set_attributes) { |
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if (turn_on || turn_off) { |
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TPUTS_TRACE("set_attributes"); |
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tputs(tparm(set_attributes, |
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(newmode & A_STANDOUT) != 0, |
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(newmode & A_UNDERLINE) != 0, |
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(newmode & A_REVERSE) != 0, |
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(newmode & A_BLINK) != 0, |
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(newmode & A_DIM) != 0, |
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(newmode & A_BOLD) != 0, |
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(newmode & A_INVIS) != 0, |
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(newmode & A_PROTECT) != 0, |
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(newmode & A_ALTCHARSET) != 0), 1, outc); |
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PreviousAttr &= ALL_BUT_COLOR; |
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} |
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SetColorsIf((pair != 0) || fix_pair0, PreviousAttr); |
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} else { |
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TR(TRACE_ATTRS, ("turning %s off", _traceattr(turn_off))); |
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TurnOff(A_ALTCHARSET, exit_alt_charset_mode); |
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if (!SP || SP->_use_rmul) { |
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TurnOff(A_UNDERLINE, exit_underline_mode); |
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} |
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if (!SP || SP->_use_rmso) { |
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TurnOff(A_STANDOUT, exit_standout_mode); |
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} |
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if (turn_off && exit_attribute_mode) { |
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doPut(exit_attribute_mode); |
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turn_on |= (newmode & ALL_BUT_COLOR); |
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PreviousAttr &= ALL_BUT_COLOR; |
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} |
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SetColorsIf((pair != 0) || fix_pair0, PreviousAttr); |
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TR(TRACE_ATTRS, ("turning %s on", _traceattr(turn_on))); |
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/* *INDENT-OFF* */ |
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TurnOn(A_ALTCHARSET, enter_alt_charset_mode); |
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TurnOn(A_BLINK, enter_blink_mode); |
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TurnOn(A_BOLD, enter_bold_mode); |
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TurnOn(A_DIM, enter_dim_mode); |
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TurnOn(A_REVERSE, enter_reverse_mode); |
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TurnOn(A_STANDOUT, enter_standout_mode); |
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TurnOn(A_PROTECT, enter_protected_mode); |
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TurnOn(A_INVIS, enter_secure_mode); |
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TurnOn(A_UNDERLINE, enter_underline_mode); |
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#if USE_WIDEC_SUPPORT |
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TurnOn(A_HORIZONTAL, enter_horizontal_hl_mode); |
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TurnOn(A_LEFT, enter_left_hl_mode); |
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TurnOn(A_LOW, enter_low_hl_mode); |
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TurnOn(A_RIGHT, enter_right_hl_mode); |
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TurnOn(A_TOP, enter_top_hl_mode); |
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TurnOn(A_VERTICAL, enter_vertical_hl_mode); |
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#endif |
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/* *INDENT-ON* */ |
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} |
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if (reverse) |
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newmode |= A_REVERSE; |
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if (SP) |
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SetAttr(SCREEN_ATTRS(SP), newmode); |
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else |
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PreviousAttr = newmode; |
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returnCode(OK); |
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} |
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NCURSES_EXPORT(int) |
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vidattr(chtype newmode) |
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{ |
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T((T_CALLED("vidattr(%s)"), _traceattr(newmode))); |
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returnCode(vidputs(newmode, _nc_outch)); |
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} |
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NCURSES_EXPORT(chtype) |
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termattrs(void) |
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{ |
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chtype attrs = A_NORMAL; |
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T((T_CALLED("termattrs()"))); |
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if (enter_alt_charset_mode) |
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attrs |= A_ALTCHARSET; |
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if (enter_blink_mode) |
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attrs |= A_BLINK; |
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if (enter_bold_mode) |
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attrs |= A_BOLD; |
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if (enter_dim_mode) |
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attrs |= A_DIM; |
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if (enter_reverse_mode) |
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attrs |= A_REVERSE; |
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if (enter_standout_mode) |
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attrs |= A_STANDOUT; |
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if (enter_protected_mode) |
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attrs |= A_PROTECT; |
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if (enter_secure_mode) |
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attrs |= A_INVIS; |
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if (enter_underline_mode) |
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attrs |= A_UNDERLINE; |
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if (SP->_coloron) |
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attrs |= A_COLOR; |
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returnChar(attrs); |
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} |