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/***************************************************************************
* 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 teminal 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...
*/
#include "curses.priv.h"
#include <string.h>
#include "term.h"
int vidputs(attr_t newmode, int (*outc)(int))
{
static attr_t previous_attr;
attr_t turn_on, turn_off;
T(("vidputs(%lx) called %s", newmode, _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)));
turn_off = (~newmode & previous_attr) & (chtype)(~A_COLOR);
turn_on = (newmode & ~previous_attr) & (chtype)(~A_COLOR);
if (newmode == previous_attr)
return OK;
if (newmode == A_NORMAL) {
if((previous_attr & A_ALTCHARSET) && exit_alt_charset_mode) {
TPUTS_TRACE("exit_alt_charset_mode");
tputs(exit_alt_charset_mode, 1, outc);
previous_attr &= ~A_ALTCHARSET;
}
if (previous_attr & A_COLOR) {
TPUTS_TRACE("orig_pair");
tputs(orig_pair, 1, outc);
}
if (previous_attr) {
TPUTS_TRACE("exit_attribute_mode");
tputs(exit_attribute_mode, 1, outc);
}
} 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);
/*
* Setting attributes in this way tends to unset the
* ones (such as color) that weren't specified.
*/
turn_off |= A_COLOR;
}
} else {
T(("turning %s off", _traceattr(turn_off)));
if ((turn_off & A_ALTCHARSET) && exit_alt_charset_mode) {
TPUTS_TRACE("exit_alt_charset_mode");
tputs(exit_alt_charset_mode, 1, outc);
turn_off &= ~A_ALTCHARSET;
}
if ((turn_off & A_UNDERLINE) && exit_underline_mode) {
TPUTS_TRACE("exit_underline_mode");
tputs(exit_underline_mode, 1, outc);
turn_off &= ~A_UNDERLINE;
}
if ((turn_off & A_STANDOUT) && exit_standout_mode) {
TPUTS_TRACE("exit_standout_mode");
tputs(exit_standout_mode, 1, outc);
turn_off &= ~A_STANDOUT;
}
if (turn_off && exit_attribute_mode) {
TPUTS_TRACE("exit_attribute_mode");
tputs(exit_attribute_mode, 1, outc);
turn_on |= (newmode & (chtype)(~A_COLOR));
turn_off |= A_COLOR;
}
T(("turning %s on", _traceattr(turn_on)));
if ((turn_on & A_ALTCHARSET) && enter_alt_charset_mode) {
TPUTS_TRACE("enter_alt_charset_mode");
tputs(enter_alt_charset_mode, 1, outc);
}
if ((turn_on & A_BLINK) && enter_blink_mode) {
TPUTS_TRACE("enter_blink_mode");
tputs(enter_blink_mode, 1, outc);
}
if ((turn_on & A_BOLD) && enter_bold_mode) {
TPUTS_TRACE("enter_bold_mode");
tputs(enter_bold_mode, 1, outc);
}
if ((turn_on & A_DIM) && enter_dim_mode) {
TPUTS_TRACE("enter_dim_mode");
tputs(enter_dim_mode, 1, outc);
}
if ((turn_on & A_REVERSE) && enter_reverse_mode) {
TPUTS_TRACE("enter_reverse_mode");
tputs(enter_reverse_mode, 1, outc);
}
if ((turn_on & A_STANDOUT) && enter_standout_mode) {
TPUTS_TRACE("enter_standout_mode");
tputs(enter_standout_mode, 1, outc);
}
if ((turn_on & A_PROTECT) && enter_protected_mode) {
TPUTS_TRACE("enter_protected_mode");
tputs(enter_protected_mode, 1, outc);
}
if ((turn_on & A_INVIS) && enter_secure_mode) {
TPUTS_TRACE("enter_secure_mode");
tputs(enter_secure_mode, 1, outc);
}
if ((turn_on & A_UNDERLINE) && enter_underline_mode) {
TPUTS_TRACE("enter_underline_mode");
tputs(enter_underline_mode, 1, outc);
}
if ((turn_on & A_HORIZONTAL) && enter_horizontal_hl_mode) {
TPUTS_TRACE("enter_horizontal_hl_mode");
tputs(enter_horizontal_hl_mode, 1, outc);
}
if ((turn_on & A_LEFT) && enter_left_hl_mode) {
TPUTS_TRACE("enter_left_hl_mode");
tputs(enter_left_hl_mode, 1, outc);
}
if ((turn_on & A_LOW) && enter_low_hl_mode) {
TPUTS_TRACE("enter_low_hl_mode");
tputs(enter_low_hl_mode, 1, outc);
}
if ((turn_on & A_RIGHT) && enter_right_hl_mode) {
TPUTS_TRACE("enter_right_hl_mode");
tputs(enter_right_hl_mode, 1, outc);
}
if ((turn_on & A_TOP) && enter_top_hl_mode) {
TPUTS_TRACE("enter_top_hl_mode");
tputs(enter_top_hl_mode, 1, outc);
}
if ((turn_on & A_VERTICAL) && enter_vertical_hl_mode) {
TPUTS_TRACE("enter_vertical_hl_mode");
tputs(enter_vertical_hl_mode, 1, outc);
}
}
/* if there is no crrent screen, assume we *can* do color */
if (!SP || SP->_coloron) {
int pair = PAIR_NUMBER(newmode);
int current_pair = PAIR_NUMBER(previous_attr);
T(("old pair = %d -- new pair = %d", current_pair, pair));
if (pair != current_pair || (turn_off && pair)) {
_nc_do_color(pair, outc);
}
}
if (SP)
SP->_current_attr = newmode;
T(("vidputs finished"));
return OK;
}
int vidattr(attr_t newmode)
{
T(("vidattr(%lx) called", newmode));
return(vidputs(newmode, _nc_outch));
}
attr_t termattrs(void)
{
int 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);
}
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