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56a4365bde
It is quite inconvenient that if an application for xterm uses 256 color mode, text suddenly starts to blink (because of ;5; in the middle). We'd better just implement 256 color mode and add a conversion routine from 256 to 8 color mode, which doesn't seem to be too bad in practice. Remapping colors is done quite simple. If one of the channels is most actively represented, primary colors are used. If two channels are most actively represented, secondary colors are used. If all three channels are equal (gray), it picks between black and white. Reported by: Paul B. Mahol <onemda gmail com>
113 lines
3.2 KiB
C
113 lines
3.2 KiB
C
/*-
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* Copyright (c) 2008-2009 Ed Schouten <ed@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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static void
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teken_subr_cons25_set_cursor_type(teken_t *t, unsigned int type)
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{
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teken_funcs_param(t, TP_SHOWCURSOR, type != 1);
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}
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static const teken_color_t cons25_colors[8] = { TC_BLACK, TC_BLUE,
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TC_GREEN, TC_CYAN, TC_RED, TC_MAGENTA, TC_BROWN, TC_WHITE };
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static void
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teken_subr_cons25_set_adapter_background(teken_t *t, unsigned int c)
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{
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t->t_defattr.ta_bgcolor = cons25_colors[c % 8];
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t->t_curattr.ta_bgcolor = cons25_colors[c % 8];
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}
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static void
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teken_subr_cons25_set_adapter_foreground(teken_t *t, unsigned int c)
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{
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t->t_defattr.ta_fgcolor = cons25_colors[c % 8];
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t->t_curattr.ta_fgcolor = cons25_colors[c % 8];
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if (c >= 8) {
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t->t_defattr.ta_format |= TF_BOLD;
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t->t_curattr.ta_format |= TF_BOLD;
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} else {
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t->t_defattr.ta_format &= ~TF_BOLD;
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t->t_curattr.ta_format &= ~TF_BOLD;
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}
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}
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static const teken_color_t cons25_revcolors[8] = { 0, 4, 2, 6, 1, 5, 3, 7 };
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void
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teken_get_defattr_cons25(teken_t *t, int *fg, int *bg)
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{
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*fg = cons25_revcolors[teken_256to8(t->t_defattr.ta_fgcolor)];
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if (t->t_defattr.ta_format & TF_BOLD)
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*fg += 8;
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*bg = cons25_revcolors[teken_256to8(t->t_defattr.ta_bgcolor)];
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}
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static void
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teken_subr_cons25_switch_virtual_terminal(teken_t *t, unsigned int vt)
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{
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teken_funcs_param(t, TP_SWITCHVT, vt);
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}
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static void
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teken_subr_cons25_set_bell_pitch_duration(teken_t *t, unsigned int pitch,
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unsigned int duration)
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{
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teken_funcs_param(t, TP_SETBELLPD, (pitch << 16) |
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(duration & 0xffff));
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}
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static void
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teken_subr_cons25_set_terminal_mode(teken_t *t, unsigned int mode)
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{
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switch (mode) {
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case 0: /* Switch terminal to xterm. */
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t->t_stateflags &= ~TS_CONS25;
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break;
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case 1: /* Switch terminal to cons25. */
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t->t_stateflags |= TS_CONS25;
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break;
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}
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}
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#if 0
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static void
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teken_subr_vt52_decid(teken_t *t)
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{
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const char response[] = "\x1B/Z";
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teken_funcs_respond(t, response, sizeof response - 1);
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}
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#endif
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