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cosmopolitan/third_party/ncurses/lib_vid_attr.c
Justine Tunney 0ed7309fdb
Add ncurses 6.4
2023-12-10 07:33:37 -08:00

367 lines
11 KiB
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/****************************************************************************
* Copyright 2018-2019,2020 Thomas E. Dickey *
* Copyright 2002-2014,2017 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: Thomas E. Dickey *
****************************************************************************/
#include "curses.priv.h"
#ifndef CUR
#define CUR SP_TERMTYPE
#endif
MODULE_ID("$Id: lib_vid_attr.c,v 1.30 2020/05/27 23:54:31 tom Exp $")
#define doPut(mode) \
TPUTS_TRACE(#mode); \
NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx mode, 1, outc)
#define TurnOn(mask, mode) \
if ((turn_on & mask) && mode) { \
TPUTS_TRACE(#mode); \
NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx mode, 1, outc); \
}
#define TurnOff(mask, mode) \
if ((turn_off & mask) && mode) { \
TPUTS_TRACE(#mode); \
NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx mode, 1, outc); \
turn_off &= ~mask; \
}
/* if there is no current screen, assume we *can* do color */
#define SetColorsIf(why, old_attr, old_pair) \
if (can_color && (why)) { \
TR(TRACE_ATTRS, ("old pair = %d -- new pair = %d", old_pair, color_pair)); \
if ((color_pair != old_pair) \
|| (fix_pair0 && (color_pair == 0)) \
|| (reverse ^ ((old_attr & A_REVERSE) != 0))) { \
NCURSES_SP_NAME(_nc_do_color) (NCURSES_SP_ARGx \
old_pair, color_pair, \
reverse, outc); \
} \
}
#define set_color(mode, pair) \
mode &= ALL_BUT_COLOR; \
mode |= (attr_t) ColorPair(pair)
NCURSES_EXPORT(int)
NCURSES_SP_NAME(vid_puts) (NCURSES_SP_DCLx
attr_t newmode,
NCURSES_PAIRS_T pair_arg,
void *opts OPTIONAL_PAIR,
NCURSES_SP_OUTC outc)
{
int color_pair = pair_arg;
#if NCURSES_EXT_COLORS
static attr_t previous_attr = A_NORMAL;
static int previous_pair = 0;
attr_t turn_on, turn_off;
bool reverse = FALSE;
bool can_color = (SP_PARM == 0 || SP_PARM->_coloron);
#if NCURSES_EXT_FUNCS
bool fix_pair0 = (SP_PARM != 0 && SP_PARM->_coloron && !SP_PARM->_default_color);
#else
#define fix_pair0 FALSE
#endif
if (!IsValidTIScreen(SP_PARM))
returnCode(ERR);
newmode &= A_ATTRIBUTES;
set_extended_pair(opts, color_pair);
T((T_CALLED("vid_puts(%s,%d)"), _traceattr(newmode), color_pair));
/* this allows us to go on whether or not newterm() has been called */
if (SP_PARM) {
previous_attr = AttrOf(SCREEN_ATTRS(SP_PARM));
previous_pair = GetPair(SCREEN_ATTRS(SP_PARM));
}
TR(TRACE_ATTRS, ("previous attribute was %s, %d",
_traceattr(previous_attr), previous_pair));
#if !USE_XMC_SUPPORT
if ((SP_PARM != 0)
&& (magic_cookie_glitch > 0))
newmode &= ~(SP_PARM->_xmc_suppress);
#endif
/*
* If we have a terminal that cannot combine color with video
* attributes, use the colors in preference.
*/
if ((color_pair != 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 = (unsigned) 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
&& color_pair == previous_pair)
returnCode(OK);
if (reverse) {
newmode &= ~A_REVERSE;
}
turn_off = (~newmode & previous_attr) & ALL_BUT_COLOR;
turn_on = (newmode & ~(previous_attr & TPARM_ATTR)) & ALL_BUT_COLOR;
SetColorsIf(((color_pair == 0) && !fix_pair0), previous_attr, previous_pair);
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_PARM || SP_PARM->_use_rmul) {
TurnOff(A_UNDERLINE, exit_underline_mode);
}
if (!SP_PARM || SP_PARM->_use_rmso) {
TurnOff(A_STANDOUT, exit_standout_mode);
}
#if USE_ITALIC
if (!SP_PARM || SP_PARM->_use_ritm) {
TurnOff(A_ITALIC, exit_italics_mode);
}
#endif
}
previous_attr &= ALL_BUT_COLOR;
previous_pair = 0;
}
SetColorsIf((color_pair != 0) || fix_pair0, previous_attr, previous_pair);
} else if (set_attributes) {
if (turn_on || turn_off) {
TPUTS_TRACE("set_attributes");
NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx
TIPARM_9(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 &= ALL_BUT_COLOR;
previous_pair = 0;
}
#if USE_ITALIC
if (!SP_PARM || SP_PARM->_use_ritm) {
if (turn_on & A_ITALIC) {
TurnOn(A_ITALIC, enter_italics_mode);
} else if (turn_off & A_ITALIC) {
TurnOff(A_ITALIC, exit_italics_mode);
}
}
#endif
SetColorsIf((color_pair != 0) || fix_pair0, previous_attr, previous_pair);
} else {
TR(TRACE_ATTRS, ("turning %s off", _traceattr(turn_off)));
TurnOff(A_ALTCHARSET, exit_alt_charset_mode);
if (!SP_PARM || SP_PARM->_use_rmul) {
TurnOff(A_UNDERLINE, exit_underline_mode);
}
if (!SP_PARM || SP_PARM->_use_rmso) {
TurnOff(A_STANDOUT, exit_standout_mode);
}
#if USE_ITALIC
if (!SP_PARM || SP_PARM->_use_ritm) {
TurnOff(A_ITALIC, exit_italics_mode);
}
#endif
if (turn_off && exit_attribute_mode) {
doPut(exit_attribute_mode);
turn_on |= (newmode & ALL_BUT_COLOR);
previous_attr &= ALL_BUT_COLOR;
previous_pair = 0;
}
SetColorsIf((color_pair != 0) || fix_pair0, previous_attr, previous_pair);
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);
#if USE_ITALIC
TurnOn(A_ITALIC, enter_italics_mode);
#endif
#if USE_WIDEC_SUPPORT && defined(enter_horizontal_hl_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);
#endif
/* *INDENT-ON* */
}
if (reverse)
newmode |= A_REVERSE;
if (SP_PARM) {
SetAttr(SCREEN_ATTRS(SP_PARM), newmode);
SetPair(SCREEN_ATTRS(SP_PARM), color_pair);
} else {
previous_attr = newmode;
previous_pair = color_pair;
}
returnCode(OK);
#else
T((T_CALLED("vid_puts(%s,%d)"), _traceattr(newmode), color_pair));
(void) opts;
set_color(newmode, color_pair);
returnCode(NCURSES_SP_NAME(vidputs) (NCURSES_SP_ARGx newmode, outc));
#endif
}
#if NCURSES_SP_FUNCS
NCURSES_EXPORT(int)
vid_puts(attr_t newmode,
NCURSES_PAIRS_T pair_arg,
void *opts GCC_UNUSED,
NCURSES_OUTC outc)
{
SetSafeOutcWrapper(outc);
return NCURSES_SP_NAME(vid_puts) (CURRENT_SCREEN,
newmode,
pair_arg,
opts,
_nc_outc_wrapper);
}
#endif
#undef vid_attr
NCURSES_EXPORT(int)
NCURSES_SP_NAME(vid_attr) (NCURSES_SP_DCLx
attr_t newmode,
NCURSES_PAIRS_T pair_arg,
void *opts)
{
T((T_CALLED("vid_attr(%s,%d)"), _traceattr(newmode), (int) pair_arg));
returnCode(NCURSES_SP_NAME(vid_puts) (NCURSES_SP_ARGx
newmode,
pair_arg,
opts,
NCURSES_SP_NAME(_nc_putchar)));
}
#if NCURSES_SP_FUNCS
NCURSES_EXPORT(int)
vid_attr(attr_t newmode, NCURSES_PAIRS_T pair_arg, void *opts)
{
return NCURSES_SP_NAME(vid_attr) (CURRENT_SCREEN, newmode, pair_arg, opts);
}
#endif
/*
* This implementation uses the same mask values for A_xxx and WA_xxx, so
* we can use termattrs() for part of the logic.
*/
NCURSES_EXPORT(attr_t)
NCURSES_SP_NAME(term_attrs) (NCURSES_SP_DCL0)
{
attr_t attrs = 0;
T((T_CALLED("term_attrs()")));
if (SP_PARM) {
attrs = NCURSES_SP_NAME(termattrs) (NCURSES_SP_ARG);
#if USE_WIDEC_SUPPORT && defined(enter_horizontal_hl_mode)
/* these are only supported for wide-character mode */
if (enter_horizontal_hl_mode)
attrs |= WA_HORIZONTAL;
if (enter_left_hl_mode)
attrs |= WA_LEFT;
if (enter_low_hl_mode)
attrs |= WA_LOW;
if (enter_right_hl_mode)
attrs |= WA_RIGHT;
if (enter_top_hl_mode)
attrs |= WA_TOP;
if (enter_vertical_hl_mode)
attrs |= WA_VERTICAL;
#endif
}
returnAttr(attrs);
}
#if NCURSES_SP_FUNCS
NCURSES_EXPORT(attr_t)
term_attrs(void)
{
return NCURSES_SP_NAME(term_attrs) (CURRENT_SCREEN);
}
#endif
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