scterm-teken.c revision 331722 
1/*-
2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
3 * All rights reserved.
4 *
5 * Copyright (c) 2008-2009 Ed Schouten <ed@FreeBSD.org>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer as
13 *    the first lines of this file unmodified.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD: stable/11/sys/dev/syscons/scterm-teken.c 331722 2018-03-29 02:50:57Z eadler $");
32
33#include "opt_syscons.h"
34#include "opt_teken.h"
35
36#include <sys/param.h>
37#include <sys/systm.h>
38#include <sys/kernel.h>
39#include <sys/module.h>
40#include <sys/consio.h>
41#include <sys/kbio.h>
42
43#if defined(__arm__) || defined(__mips__) || \
44	defined(__powerpc__) || defined(__sparc64__)
45#include <machine/sc_machdep.h>
46#else
47#include <machine/pc/display.h>
48#endif
49
50#include <dev/syscons/syscons.h>
51
52#include <teken/teken.h>
53
54static void scteken_sc_to_te_attr(unsigned char, teken_attr_t *);
55static int scteken_te_to_sc_attr(const teken_attr_t *);
56
57static sc_term_init_t		scteken_init;
58static sc_term_term_t		scteken_term;
59static sc_term_puts_t		scteken_puts;
60static sc_term_ioctl_t		scteken_ioctl;
61static sc_term_default_attr_t	scteken_default_attr;
62static sc_term_clear_t		scteken_clear;
63static sc_term_input_t		scteken_input;
64static sc_term_fkeystr_t	scteken_fkeystr;
65static sc_term_sync_t		scteken_sync;
66static void			scteken_nop(void);
67
68typedef struct {
69	teken_t		ts_teken;
70	int		ts_busy;
71} teken_stat;
72
73static teken_stat	reserved_teken_stat;
74
75static void scteken_sync_internal(scr_stat *, teken_stat *);
76
77static sc_term_sw_t sc_term_scteken = {
78	{ NULL, NULL },
79	"scteken",			/* emulator name */
80	"teken terminal",		/* description */
81	"*",				/* matching renderer */
82	sizeof(teken_stat),		/* softc size */
83	0,
84	scteken_init,
85	scteken_term,
86	scteken_puts,
87	scteken_ioctl,
88	(sc_term_reset_t *)scteken_nop,
89	scteken_default_attr,
90	scteken_clear,
91	(sc_term_notify_t *)scteken_nop,
92	scteken_input,
93	scteken_fkeystr,
94	scteken_sync,
95};
96
97SCTERM_MODULE(scteken, sc_term_scteken);
98
99static tf_bell_t	scteken_bell;
100static tf_cursor_t	scteken_cursor;
101static tf_putchar_t	scteken_putchar;
102static tf_fill_t	scteken_fill;
103static tf_copy_t	scteken_copy;
104static tf_param_t	scteken_param;
105static tf_respond_t	scteken_respond;
106
107static const teken_funcs_t scteken_funcs = {
108	.tf_bell	= scteken_bell,
109	.tf_cursor	= scteken_cursor,
110	.tf_putchar	= scteken_putchar,
111	.tf_fill	= scteken_fill,
112	.tf_copy	= scteken_copy,
113	.tf_param	= scteken_param,
114	.tf_respond	= scteken_respond,
115};
116
117static int
118scteken_init(scr_stat *scp, void **softc, int code)
119{
120	teken_stat *ts;
121	teken_attr_t ta;
122
123	if (*softc == NULL) {
124		if (reserved_teken_stat.ts_busy)
125			return (EINVAL);
126		*softc = &reserved_teken_stat;
127	}
128	ts = *softc;
129
130	switch (code) {
131	case SC_TE_COLD_INIT:
132		++sc_term_scteken.te_refcount;
133		ts->ts_busy = 1;
134		/* FALLTHROUGH */
135	case SC_TE_WARM_INIT:
136		ta = *teken_get_defattr(&ts->ts_teken);
137		teken_init(&ts->ts_teken, &scteken_funcs, scp);
138		teken_set_defattr(&ts->ts_teken, &ta);
139#ifndef TEKEN_UTF8
140		teken_set_8bit(&ts->ts_teken);
141#endif /* !TEKEN_UTF8 */
142#ifdef TEKEN_CONS25
143		teken_set_cons25(&ts->ts_teken);
144#endif /* TEKEN_CONS25 */
145		scteken_sync_internal(scp, ts);
146		break;
147	}
148
149	return (0);
150}
151
152static int
153scteken_term(scr_stat *scp, void **softc)
154{
155
156	if (*softc == &reserved_teken_stat) {
157		*softc = NULL;
158		reserved_teken_stat.ts_busy = 0;
159	}
160	--sc_term_scteken.te_refcount;
161
162	return (0);
163}
164
165static void
166scteken_puts(scr_stat *scp, u_char *buf, int len)
167{
168	teken_stat *ts = scp->ts;
169
170	scp->sc->write_in_progress++;
171	teken_input(&ts->ts_teken, buf, len);
172	scp->sc->write_in_progress--;
173}
174
175static int
176scteken_ioctl(scr_stat *scp, struct tty *tp, u_long cmd, caddr_t data,
177	     struct thread *td)
178{
179	teken_stat *ts = scp->ts;
180	vid_info_t *vi;
181	int attr;
182
183	switch (cmd) {
184	case GIO_ATTR:      	/* get current attributes */
185		*(int*)data =
186		    scteken_te_to_sc_attr(teken_get_curattr(&ts->ts_teken));
187		return (0);
188	case CONS_GETINFO:  	/* get current (virtual) console info */
189		vi = (vid_info_t *)data;
190		if (vi->size != sizeof(struct vid_info))
191			return EINVAL;
192
193		attr = scteken_te_to_sc_attr(teken_get_defattr(&ts->ts_teken));
194		vi->mv_norm.fore = attr & 0x0f;
195		vi->mv_norm.back = (attr >> 4) & 0x0f;
196		vi->mv_rev.fore = vi->mv_norm.back;
197		vi->mv_rev.back = vi->mv_norm.fore;
198		/*
199		 * The other fields are filled by the upper routine. XXX
200		 */
201		return (ENOIOCTL);
202	}
203
204	return (ENOIOCTL);
205}
206
207static void
208scteken_default_attr(scr_stat *scp, int color, int rev_color)
209{
210	teken_stat *ts = scp->ts;
211	teken_attr_t ta;
212
213	scteken_sc_to_te_attr(color, &ta);
214	teken_set_defattr(&ts->ts_teken, &ta);
215}
216
217static void
218scteken_clear(scr_stat *scp)
219{
220	teken_stat *ts = scp->ts;
221
222	sc_move_cursor(scp, 0, 0);
223	scteken_sync_internal(scp, ts);
224	sc_vtb_clear(&scp->vtb, scp->sc->scr_map[0x20],
225		     scteken_te_to_sc_attr(teken_get_curattr(&ts->ts_teken))
226		     << 8);
227	mark_all(scp);
228}
229
230static int
231scteken_input(scr_stat *scp, int c, struct tty *tp)
232{
233
234	return FALSE;
235}
236
237static const char *
238scteken_fkeystr(scr_stat *scp, int c)
239{
240	teken_stat *ts = scp->ts;
241	unsigned int k;
242
243	switch (c) {
244	case FKEY | F(1):  case FKEY | F(2):  case FKEY | F(3):
245	case FKEY | F(4):  case FKEY | F(5):  case FKEY | F(6):
246	case FKEY | F(7):  case FKEY | F(8):  case FKEY | F(9):
247	case FKEY | F(10): case FKEY | F(11): case FKEY | F(12):
248		k = TKEY_F1 + c - (FKEY | F(1));
249		break;
250	case FKEY | F(49):
251		k = TKEY_HOME;
252		break;
253	case FKEY | F(50):
254		k = TKEY_UP;
255		break;
256	case FKEY | F(51):
257		k = TKEY_PAGE_UP;
258		break;
259	case FKEY | F(53):
260		k = TKEY_LEFT;
261		break;
262	case FKEY | F(55):
263		k = TKEY_RIGHT;
264		break;
265	case FKEY | F(57):
266		k = TKEY_END;
267		break;
268	case FKEY | F(58):
269		k = TKEY_DOWN;
270		break;
271	case FKEY | F(59):
272		k = TKEY_PAGE_DOWN;
273		break;
274	case FKEY | F(60):
275		k = TKEY_INSERT;
276		break;
277	case FKEY | F(61):
278		k = TKEY_DELETE;
279		break;
280	default:
281		return (NULL);
282	}
283
284	return (teken_get_sequence(&ts->ts_teken, k));
285}
286
287static void
288scteken_sync_internal(scr_stat *scp, teken_stat *ts)
289{
290	teken_pos_t tp;
291
292	tp.tp_col = scp->xsize;
293	tp.tp_row = scp->ysize;
294	teken_set_winsize_noreset(&ts->ts_teken, &tp);
295	tp.tp_col = scp->xpos;
296	tp.tp_row = scp->ypos;
297	teken_set_cursor(&ts->ts_teken, &tp);
298}
299
300static void
301scteken_sync(scr_stat *scp)
302{
303	scteken_sync_internal(scp, scp->ts);
304}
305
306static void
307scteken_nop(void)
308{
309
310}
311
312/*
313 * libteken routines.
314 */
315
316static const teken_color_t sc_to_te_color[] = {
317	TC_BLACK,     TC_BLUE,         TC_GREEN,     TC_CYAN,
318	TC_RED,       TC_MAGENTA,      TC_BROWN,     TC_WHITE,
319};
320
321static const unsigned char te_to_sc_color[] = {
322	FG_BLACK,     FG_RED,          FG_GREEN,     FG_BROWN,
323	FG_BLUE,      FG_MAGENTA,      FG_CYAN,      FG_LIGHTGREY,
324};
325
326static void
327scteken_sc_to_te_attr(unsigned char color, teken_attr_t *a)
328{
329
330	/*
331	 * Conversions of attrs are not reversible.  Since sc attrs are
332	 * pure colors in the simplest mode (16-color graphics) and the
333	 * API is too deficient to tell us the mode, always convert to
334	 * pure colors.  The conversion is essentially the identity except
335	 * for reordering the non-brightness bits in the 2 color numbers.
336	 */
337	a->ta_format = 0;
338	a->ta_fgcolor = sc_to_te_color[color & 7] | (color & 8);
339	a->ta_bgcolor = sc_to_te_color[(color >> 4) & 7] | ((color >> 4) & 8);
340}
341
342static int
343scteken_te_to_sc_attr(const teken_attr_t *a)
344{
345	int attr;
346	teken_color_t fg, bg;
347
348	if (a->ta_format & TF_REVERSE) {
349		fg = a->ta_bgcolor;
350		bg = a->ta_fgcolor;
351	} else {
352		fg = a->ta_fgcolor;
353		bg = a->ta_bgcolor;
354	}
355	if (fg >= 16)
356		fg = teken_256to16(fg);
357	if (bg >= 16)
358		bg = teken_256to16(bg);
359	attr = te_to_sc_color[fg & 7] | (fg & 8) |
360	    ((te_to_sc_color[bg & 7] | (bg & 8)) << 4);
361
362	/* XXX: underline mapping for Hercules adapter can be better. */
363	if (a->ta_format & (TF_BOLD | TF_UNDERLINE))
364		attr ^= 8;
365	if (a->ta_format & TF_BLINK)
366		attr ^= 0x80;
367
368	return (attr);
369}
370
371static void
372scteken_bell(void *arg)
373{
374	scr_stat *scp = arg;
375
376	sc_bell(scp, scp->bell_pitch, scp->bell_duration);
377}
378
379static void
380scteken_cursor(void *arg, const teken_pos_t *p)
381{
382	scr_stat *scp = arg;
383
384	sc_move_cursor(scp, p->tp_col, p->tp_row);
385}
386
387#ifdef TEKEN_UTF8
388struct unicp437 {
389	uint16_t	unicode_base;
390	uint8_t		cp437_base;
391	uint8_t		length;
392};
393
394static const struct unicp437 cp437table[] = {
395	{ 0x0020, 0x20, 0x5e }, { 0x00a0, 0x20, 0x00 },
396	{ 0x00a1, 0xad, 0x00 }, { 0x00a2, 0x9b, 0x00 },
397	{ 0x00a3, 0x9c, 0x00 }, { 0x00a5, 0x9d, 0x00 },
398	{ 0x00a7, 0x15, 0x00 }, { 0x00aa, 0xa6, 0x00 },
399	{ 0x00ab, 0xae, 0x00 }, { 0x00ac, 0xaa, 0x00 },
400	{ 0x00b0, 0xf8, 0x00 }, { 0x00b1, 0xf1, 0x00 },
401	{ 0x00b2, 0xfd, 0x00 }, { 0x00b5, 0xe6, 0x00 },
402	{ 0x00b6, 0x14, 0x00 }, { 0x00b7, 0xfa, 0x00 },
403	{ 0x00ba, 0xa7, 0x00 }, { 0x00bb, 0xaf, 0x00 },
404	{ 0x00bc, 0xac, 0x00 }, { 0x00bd, 0xab, 0x00 },
405	{ 0x00bf, 0xa8, 0x00 }, { 0x00c0, 0x41, 0x00 },
406	{ 0x00c1, 0x41, 0x00 }, { 0x00c2, 0x41, 0x00 },
407	{ 0x00c4, 0x8e, 0x01 }, { 0x00c6, 0x92, 0x00 },
408	{ 0x00c7, 0x80, 0x00 }, { 0x00c8, 0x45, 0x00 },
409	{ 0x00c9, 0x90, 0x00 }, { 0x00ca, 0x45, 0x00 },
410	{ 0x00cb, 0x45, 0x00 }, { 0x00cc, 0x49, 0x00 },
411	{ 0x00cd, 0x49, 0x00 }, { 0x00ce, 0x49, 0x00 },
412	{ 0x00cf, 0x49, 0x00 }, { 0x00d1, 0xa5, 0x00 },
413	{ 0x00d2, 0x4f, 0x00 }, { 0x00d3, 0x4f, 0x00 },
414	{ 0x00d4, 0x4f, 0x00 }, { 0x00d6, 0x99, 0x00 },
415	{ 0x00d9, 0x55, 0x00 }, { 0x00da, 0x55, 0x00 },
416	{ 0x00db, 0x55, 0x00 }, { 0x00dc, 0x9a, 0x00 },
417	{ 0x00df, 0xe1, 0x00 }, { 0x00e0, 0x85, 0x00 },
418	{ 0x00e1, 0xa0, 0x00 }, { 0x00e2, 0x83, 0x00 },
419	{ 0x00e4, 0x84, 0x00 }, { 0x00e5, 0x86, 0x00 },
420	{ 0x00e6, 0x91, 0x00 }, { 0x00e7, 0x87, 0x00 },
421	{ 0x00e8, 0x8a, 0x00 }, { 0x00e9, 0x82, 0x00 },
422	{ 0x00ea, 0x88, 0x01 }, { 0x00ec, 0x8d, 0x00 },
423	{ 0x00ed, 0xa1, 0x00 }, { 0x00ee, 0x8c, 0x00 },
424	{ 0x00ef, 0x8b, 0x00 }, { 0x00f0, 0xeb, 0x00 },
425	{ 0x00f1, 0xa4, 0x00 }, { 0x00f2, 0x95, 0x00 },
426	{ 0x00f3, 0xa2, 0x00 }, { 0x00f4, 0x93, 0x00 },
427	{ 0x00f6, 0x94, 0x00 }, { 0x00f7, 0xf6, 0x00 },
428	{ 0x00f8, 0xed, 0x00 }, { 0x00f9, 0x97, 0x00 },
429	{ 0x00fa, 0xa3, 0x00 }, { 0x00fb, 0x96, 0x00 },
430	{ 0x00fc, 0x81, 0x00 }, { 0x00ff, 0x98, 0x00 },
431	{ 0x013f, 0x4c, 0x00 }, { 0x0140, 0x6c, 0x00 },
432	{ 0x0192, 0x9f, 0x00 }, { 0x0393, 0xe2, 0x00 },
433	{ 0x0398, 0xe9, 0x00 }, { 0x03a3, 0xe4, 0x00 },
434	{ 0x03a6, 0xe8, 0x00 }, { 0x03a9, 0xea, 0x00 },
435	{ 0x03b1, 0xe0, 0x01 }, { 0x03b4, 0xeb, 0x00 },
436	{ 0x03b5, 0xee, 0x00 }, { 0x03bc, 0xe6, 0x00 },
437	{ 0x03c0, 0xe3, 0x00 }, { 0x03c3, 0xe5, 0x00 },
438	{ 0x03c4, 0xe7, 0x00 }, { 0x03c6, 0xed, 0x00 },
439	{ 0x03d5, 0xed, 0x00 }, { 0x2010, 0x2d, 0x00 },
440	{ 0x2014, 0x2d, 0x00 }, { 0x2018, 0x60, 0x00 },
441	{ 0x2019, 0x27, 0x00 }, { 0x201c, 0x22, 0x00 },
442	{ 0x201d, 0x22, 0x00 }, { 0x2022, 0x07, 0x00 },
443	{ 0x203c, 0x13, 0x00 }, { 0x207f, 0xfc, 0x00 },
444	{ 0x20a7, 0x9e, 0x00 }, { 0x20ac, 0xee, 0x00 },
445	{ 0x2126, 0xea, 0x00 }, { 0x2190, 0x1b, 0x00 },
446	{ 0x2191, 0x18, 0x00 }, { 0x2192, 0x1a, 0x00 },
447	{ 0x2193, 0x19, 0x00 }, { 0x2194, 0x1d, 0x00 },
448	{ 0x2195, 0x12, 0x00 }, { 0x21a8, 0x17, 0x00 },
449	{ 0x2202, 0xeb, 0x00 }, { 0x2208, 0xee, 0x00 },
450	{ 0x2211, 0xe4, 0x00 }, { 0x2212, 0x2d, 0x00 },
451	{ 0x2219, 0xf9, 0x00 }, { 0x221a, 0xfb, 0x00 },
452	{ 0x221e, 0xec, 0x00 }, { 0x221f, 0x1c, 0x00 },
453	{ 0x2229, 0xef, 0x00 }, { 0x2248, 0xf7, 0x00 },
454	{ 0x2261, 0xf0, 0x00 }, { 0x2264, 0xf3, 0x00 },
455	{ 0x2265, 0xf2, 0x00 }, { 0x2302, 0x7f, 0x00 },
456	{ 0x2310, 0xa9, 0x00 }, { 0x2320, 0xf4, 0x00 },
457	{ 0x2321, 0xf5, 0x00 }, { 0x2500, 0xc4, 0x00 },
458	{ 0x2502, 0xb3, 0x00 }, { 0x250c, 0xda, 0x00 },
459	{ 0x2510, 0xbf, 0x00 }, { 0x2514, 0xc0, 0x00 },
460	{ 0x2518, 0xd9, 0x00 }, { 0x251c, 0xc3, 0x00 },
461	{ 0x2524, 0xb4, 0x00 }, { 0x252c, 0xc2, 0x00 },
462	{ 0x2534, 0xc1, 0x00 }, { 0x253c, 0xc5, 0x00 },
463	{ 0x2550, 0xcd, 0x00 }, { 0x2551, 0xba, 0x00 },
464	{ 0x2552, 0xd5, 0x00 }, { 0x2553, 0xd6, 0x00 },
465	{ 0x2554, 0xc9, 0x00 }, { 0x2555, 0xb8, 0x00 },
466	{ 0x2556, 0xb7, 0x00 }, { 0x2557, 0xbb, 0x00 },
467	{ 0x2558, 0xd4, 0x00 }, { 0x2559, 0xd3, 0x00 },
468	{ 0x255a, 0xc8, 0x00 }, { 0x255b, 0xbe, 0x00 },
469	{ 0x255c, 0xbd, 0x00 }, { 0x255d, 0xbc, 0x00 },
470	{ 0x255e, 0xc6, 0x01 }, { 0x2560, 0xcc, 0x00 },
471	{ 0x2561, 0xb5, 0x00 }, { 0x2562, 0xb6, 0x00 },
472	{ 0x2563, 0xb9, 0x00 }, { 0x2564, 0xd1, 0x01 },
473	{ 0x2566, 0xcb, 0x00 }, { 0x2567, 0xcf, 0x00 },
474	{ 0x2568, 0xd0, 0x00 }, { 0x2569, 0xca, 0x00 },
475	{ 0x256a, 0xd8, 0x00 }, { 0x256b, 0xd7, 0x00 },
476	{ 0x256c, 0xce, 0x00 }, { 0x2580, 0xdf, 0x00 },
477	{ 0x2584, 0xdc, 0x00 }, { 0x2588, 0xdb, 0x00 },
478	{ 0x258c, 0xdd, 0x00 }, { 0x2590, 0xde, 0x00 },
479	{ 0x2591, 0xb0, 0x02 }, { 0x25a0, 0xfe, 0x00 },
480	{ 0x25ac, 0x16, 0x00 },
481	{ 0x25ae, 0xdb, 0x00 }, { 0x25b2, 0x1e, 0x00 },
482	{ 0x25ba, 0x10, 0x00 }, { 0x25bc, 0x1f, 0x00 },
483	{ 0x25c4, 0x11, 0x00 }, { 0x25cb, 0x09, 0x00 },
484	{ 0x25d8, 0x08, 0x00 }, { 0x25d9, 0x0a, 0x00 },
485	{ 0x263a, 0x01, 0x01 }, { 0x263c, 0x0f, 0x00 },
486	{ 0x2640, 0x0c, 0x00 }, { 0x2642, 0x0b, 0x00 },
487	{ 0x2660, 0x06, 0x00 }, { 0x2663, 0x05, 0x00 },
488	{ 0x2665, 0x03, 0x01 }, { 0x266a, 0x0d, 0x01 },
489};
490
491static void
492scteken_get_cp437(teken_char_t *c, int *attr)
493{
494	int min, mid, max;
495
496	min = 0;
497	max = (sizeof(cp437table) / sizeof(struct unicp437)) - 1;
498
499	if (*c < cp437table[0].unicode_base ||
500	    *c > cp437table[max].unicode_base + cp437table[max].length)
501		goto bad;
502
503	while (max >= min) {
504		mid = (min + max) / 2;
505		if (*c < cp437table[mid].unicode_base) {
506			max = mid - 1;
507		} else if (*c > cp437table[mid].unicode_base +
508		    cp437table[mid].length) {
509			min = mid + 1;
510		} else {
511			*c -= cp437table[mid].unicode_base;
512			*c += cp437table[mid].cp437_base;
513			return;
514		}
515	}
516bad:
517	/* Character not present in CP437. */
518	*attr = (FG_RED|BG_BLACK) << 8;
519	*c = '?';
520}
521#endif /* TEKEN_UTF8 */
522
523static void
524scteken_putchar(void *arg, const teken_pos_t *tp, teken_char_t c,
525    const teken_attr_t *a)
526{
527	scr_stat *scp = arg;
528	u_char *map;
529	u_char ch;
530	vm_offset_t p;
531	int cursor, attr;
532
533	/*
534	 * No support for printing right hand sides for CJK fullwidth
535	 * characters. Simply print a space and assume that the left
536	 * hand side describes the entire character.
537	 */
538	attr = scteken_te_to_sc_attr(a) << 8;
539	if (a->ta_format & TF_CJK_RIGHT)
540		c = ' ';
541#ifdef TEKEN_UTF8
542	scteken_get_cp437(&c, &attr);
543#endif /* TEKEN_UTF8 */
544	ch = c;
545
546	map = scp->sc->scr_map;
547
548	cursor = tp->tp_row * scp->xsize + tp->tp_col;
549	p = sc_vtb_pointer(&scp->vtb, cursor);
550	sc_vtb_putchar(&scp->vtb, p, map[ch], attr);
551
552	mark_for_update(scp, cursor);
553	/*
554	 * XXX: Why do we need this? Only marking `cursor' should be
555	 * enough. Without this line, we get artifacts.
556	 */
557	mark_for_update(scp, imin(cursor + 1, scp->xsize * scp->ysize - 1));
558}
559
560static void
561scteken_fill(void *arg, const teken_rect_t *r, teken_char_t c,
562    const teken_attr_t *a)
563{
564	scr_stat *scp = arg;
565	u_char *map;
566	u_char ch;
567	unsigned int width;
568	int attr, row;
569
570	attr = scteken_te_to_sc_attr(a) << 8;
571#ifdef TEKEN_UTF8
572	scteken_get_cp437(&c, &attr);
573#endif /* TEKEN_UTF8 */
574	ch = c;
575
576	map = scp->sc->scr_map;
577
578	if (r->tr_begin.tp_col == 0 && r->tr_end.tp_col == scp->xsize) {
579		/* Single contiguous region to fill. */
580		sc_vtb_erase(&scp->vtb, r->tr_begin.tp_row * scp->xsize,
581		    (r->tr_end.tp_row - r->tr_begin.tp_row) * scp->xsize,
582		    map[ch], attr);
583	} else {
584		/* Fill display line by line. */
585		width = r->tr_end.tp_col - r->tr_begin.tp_col;
586
587		for (row = r->tr_begin.tp_row; row < r->tr_end.tp_row; row++) {
588			sc_vtb_erase(&scp->vtb, r->tr_begin.tp_row *
589			    scp->xsize + r->tr_begin.tp_col,
590			    width, map[ch], attr);
591		}
592	}
593
594	/* Mark begin and end positions to be refreshed. */
595	mark_for_update(scp,
596	    r->tr_begin.tp_row * scp->xsize + r->tr_begin.tp_col);
597	mark_for_update(scp,
598	    (r->tr_end.tp_row - 1) * scp->xsize + (r->tr_end.tp_col - 1));
599	sc_remove_cutmarking(scp);
600}
601
602static void
603scteken_copy(void *arg, const teken_rect_t *r, const teken_pos_t *p)
604{
605	scr_stat *scp = arg;
606	unsigned int width;
607	int src, dst, end;
608
609#ifndef SC_NO_HISTORY
610	/*
611	 * We count a line of input as history if we perform a copy of
612	 * one whole line upward. In other words: if a line of text gets
613	 * overwritten by a rectangle that's right below it.
614	 */
615	if (scp->history != NULL &&
616	    r->tr_begin.tp_col == 0 && r->tr_end.tp_col == scp->xsize &&
617	    r->tr_begin.tp_row == p->tp_row + 1) {
618		sc_hist_save_one_line(scp, p->tp_row);
619	}
620#endif
621
622	if (r->tr_begin.tp_col == 0 && r->tr_end.tp_col == scp->xsize) {
623		/* Single contiguous region to copy. */
624		sc_vtb_move(&scp->vtb, r->tr_begin.tp_row * scp->xsize,
625		    p->tp_row * scp->xsize,
626		    (r->tr_end.tp_row - r->tr_begin.tp_row) * scp->xsize);
627	} else {
628		/* Copy line by line. */
629		width = r->tr_end.tp_col - r->tr_begin.tp_col;
630
631		if (p->tp_row < r->tr_begin.tp_row) {
632			/* Copy from top to bottom. */
633			src = r->tr_begin.tp_row * scp->xsize +
634			    r->tr_begin.tp_col;
635			end = r->tr_end.tp_row * scp->xsize +
636			    r->tr_end.tp_col;
637			dst = p->tp_row * scp->xsize + p->tp_col;
638
639			while (src < end) {
640				sc_vtb_move(&scp->vtb, src, dst, width);
641
642				src += scp->xsize;
643				dst += scp->xsize;
644			}
645		} else {
646			/* Copy from bottom to top. */
647			src = (r->tr_end.tp_row - 1) * scp->xsize +
648			    r->tr_begin.tp_col;
649			end = r->tr_begin.tp_row * scp->xsize +
650			    r->tr_begin.tp_col;
651			dst = (p->tp_row + r->tr_end.tp_row -
652			    r->tr_begin.tp_row - 1) * scp->xsize + p->tp_col;
653
654			while (src >= end) {
655				sc_vtb_move(&scp->vtb, src, dst, width);
656
657				src -= scp->xsize;
658				dst -= scp->xsize;
659			}
660		}
661	}
662
663	/* Mark begin and end positions to be refreshed. */
664	mark_for_update(scp,
665	    p->tp_row * scp->xsize + p->tp_col);
666	mark_for_update(scp,
667	    (p->tp_row + r->tr_end.tp_row - r->tr_begin.tp_row - 1) *
668	    scp->xsize +
669	    (p->tp_col + r->tr_end.tp_col - r->tr_begin.tp_col - 1));
670	sc_remove_cutmarking(scp);
671}
672
673static void
674scteken_param(void *arg, int cmd, unsigned int value)
675{
676	scr_stat *scp = arg;
677
678	switch (cmd) {
679	case TP_SHOWCURSOR:
680		if (value) {
681			sc_change_cursor_shape(scp,
682			    CONS_RESET_CURSOR|CONS_LOCAL_CURSOR, -1, -1);
683		} else {
684			sc_change_cursor_shape(scp,
685			    CONS_HIDDEN_CURSOR|CONS_LOCAL_CURSOR, -1, -1);
686		}
687		break;
688	case TP_SWITCHVT:
689		sc_switch_scr(scp->sc, value);
690		break;
691	case TP_SETBELLPD:
692		scp->bell_pitch = TP_SETBELLPD_PITCH(value);
693		scp->bell_duration = TP_SETBELLPD_DURATION(value);
694		break;
695	case TP_MOUSE:
696		scp->mouse_level = value;
697		break;
698	}
699}
700
701static void
702scteken_respond(void *arg, const void *buf, size_t len)
703{
704	scr_stat *scp = arg;
705
706	sc_respond(scp, buf, len, 0);
707}
708