GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcurses/widechar/lib_vid_attr.c Lines: 0 17 0.0 %
Date: 2017-11-13 Branches: 0 12 0.0 %

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/* $OpenBSD: lib_vid_attr.c,v 1.1 2010/09/06 17:26:17 nicm Exp $ */
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/****************************************************************************
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 * Copyright (c) 2002-2006,2007 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: Thomas E. Dickey                                                *
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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_vid_attr.c,v 1.1 2010/09/06 17:26:17 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, old_pair) \
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	if (can_color && (why)) { \
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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 set_color(mode, pair) mode &= ALL_BUT_COLOR; mode |= COLOR_PAIR(pair)
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NCURSES_EXPORT(int)
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vid_puts(attr_t newmode, short pair, void *opts GCC_UNUSED, int (*outc) (int))
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{
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#if NCURSES_EXT_COLORS
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    static attr_t previous_attr = A_NORMAL;
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    static int previous_pair = 0;
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    attr_t turn_on, turn_off;
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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("vid_puts(%s,%d)"), _traceattr(newmode), pair));
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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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	previous_attr = AttrOf(SCREEN_ATTRS(SP));
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	previous_pair = GetPair(SCREEN_ATTRS(SP));
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    }
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    TR(TRACE_ATTRS, ("previous attribute was %s, %d",
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		     _traceattr(previous_attr), previous_pair));
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#if !USE_XMC_SUPPORT
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    if ((SP != 0)
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	&& (magic_cookie_glitch > 0))
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	newmode &= ~(SP->_xmc_suppress);
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#endif
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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 ((pair != 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 == previous_attr
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	&& pair == previous_pair)
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	returnCode(OK);
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    if (reverse) {
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	newmode &= ~A_REVERSE;
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    }
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    turn_off = (~newmode & previous_attr) & ALL_BUT_COLOR;
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    turn_on = (newmode & ~previous_attr) & ALL_BUT_COLOR;
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    SetColorsIf(((pair == 0) && !fix_pair0), previous_attr, previous_pair);
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    if (newmode == A_NORMAL) {
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	if ((previous_attr & A_ALTCHARSET) && exit_alt_charset_mode) {
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	    doPut(exit_alt_charset_mode);
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	    previous_attr &= ~A_ALTCHARSET;
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	}
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	if (previous_attr) {
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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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	    previous_attr &= ALL_BUT_COLOR;
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	    previous_pair = 0;
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	}
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	SetColorsIf((pair != 0) || fix_pair0, previous_attr, previous_pair);
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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_9(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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	    previous_attr &= ALL_BUT_COLOR;
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	    previous_pair = 0;
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	}
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	SetColorsIf((pair != 0) || fix_pair0, previous_attr, previous_pair);
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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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	    previous_attr &= ALL_BUT_COLOR;
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	    previous_pair = 0;
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	}
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	SetColorsIf((pair != 0) || fix_pair0, previous_attr, previous_pair);
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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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	SetPair(SCREEN_ATTRS(SP), pair);
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    } else {
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	previous_attr = newmode;
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	previous_pair = pair;
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    }
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    returnCode(OK);
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#else
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    T((T_CALLED("vid_puts(%s,%d)"), _traceattr(newmode), pair));
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    set_color(newmode, pair);
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    returnCode(vidputs(newmode, outc));
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#endif
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}
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#undef vid_attr
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NCURSES_EXPORT(int)
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vid_attr(attr_t newmode, short pair, void *opts)
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{
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    T((T_CALLED("vid_attr(%s,%d)"), _traceattr(newmode), pair));
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    returnCode(vid_puts(newmode, pair, opts, _nc_outch));
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}
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/*
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 * This implementation uses the same mask values for A_xxx and WA_xxx, so
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 * we can use termattrs() for part of the logic.
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 */
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NCURSES_EXPORT(attr_t)
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term_attrs(void)
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{
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    attr_t attrs;
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    T((T_CALLED("term_attrs()")));
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    attrs = termattrs();
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    /* these are only supported for wide-character mode */
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    if (enter_horizontal_hl_mode)
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	attrs |= WA_HORIZONTAL;
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    if (enter_left_hl_mode)
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	attrs |= WA_LEFT;
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    if (enter_low_hl_mode)
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	attrs |= WA_LOW;
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    if (enter_right_hl_mode)
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	attrs |= WA_RIGHT;
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    if (enter_top_hl_mode)
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	attrs |= WA_TOP;
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    if (enter_vertical_hl_mode)
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	attrs |= WA_VERTICAL;
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    returnAttr(attrs);
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}