xref: /freebsd/sys/dev/syscons/scterm-teken.c (revision 830940567b49bb0c08dfaed40418999e76616909) 
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("$FreeBSD$");
32 
33 #include "opt_syscons.h"
34 
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
38 #include <sys/module.h>
39 #include <sys/consio.h>
40 
41 #if defined(__sparc64__) || defined(__powerpc__)
42 #include <machine/sc_machdep.h>
43 #else
44 #include <machine/pc/display.h>
45 #endif
46 
47 #include <dev/syscons/syscons.h>
48 
49 #include <dev/syscons/teken/teken.h>
50 
51 static void scteken_revattr(unsigned char, teken_attr_t *);
52 static unsigned int scteken_attr(const teken_attr_t *);
53 
54 static sc_term_init_t	scteken_init;
55 static sc_term_term_t	scteken_term;
56 static sc_term_puts_t	scteken_puts;
57 static sc_term_ioctl_t	scteken_ioctl;
58 static sc_term_default_attr_t scteken_default_attr;
59 static sc_term_clear_t	scteken_clear;
60 static sc_term_input_t	scteken_input;
61 static void		scteken_nop(void);
62 
63 typedef struct {
64 	teken_t		ts_teken;
65 	int		ts_busy;
66 } teken_stat;
67 
68 static teken_stat	reserved_teken_stat;
69 
70 static sc_term_sw_t sc_term_scteken = {
71 	{ NULL, NULL },
72 	"scteken",			/* emulator name */
73 	"teken terminal",		/* description */
74 	"*",				/* matching renderer */
75 	sizeof(teken_stat),		/* softc size */
76 	0,
77 	scteken_init,
78 	scteken_term,
79 	scteken_puts,
80 	scteken_ioctl,
81 	(sc_term_reset_t *)scteken_nop,
82 	scteken_default_attr,
83 	scteken_clear,
84 	(sc_term_notify_t *)scteken_nop,
85 	scteken_input,
86 };
87 
88 SCTERM_MODULE(scteken, sc_term_scteken);
89 
90 static tf_bell_t	scteken_bell;
91 static tf_cursor_t	scteken_cursor;
92 static tf_putchar_t	scteken_putchar;
93 static tf_fill_t	scteken_fill;
94 static tf_copy_t	scteken_copy;
95 static tf_param_t	scteken_param;
96 static tf_respond_t	scteken_respond;
97 
98 static const teken_funcs_t scteken_funcs = {
99 	.tf_bell	= scteken_bell,
100 	.tf_cursor	= scteken_cursor,
101 	.tf_putchar	= scteken_putchar,
102 	.tf_fill	= scteken_fill,
103 	.tf_copy	= scteken_copy,
104 	.tf_param	= scteken_param,
105 	.tf_respond	= scteken_respond,
106 };
107 
108 static int
109 scteken_init(scr_stat *scp, void **softc, int code)
110 {
111 	teken_stat *ts;
112 	teken_pos_t tp;
113 
114 	if (*softc == NULL) {
115 		if (reserved_teken_stat.ts_busy)
116 			return (EINVAL);
117 		*softc = &reserved_teken_stat;
118 	}
119 	ts = *softc;
120 
121 	switch (code) {
122 	case SC_TE_COLD_INIT:
123 		++sc_term_scteken.te_refcount;
124 		ts->ts_busy = 1;
125 		/* FALLTHROUGH */
126 	case SC_TE_WARM_INIT:
127 		teken_init(&ts->ts_teken, &scteken_funcs, scp);
128 
129 		tp.tp_row = scp->ysize;
130 		tp.tp_col = scp->xsize;
131 		teken_set_winsize(&ts->ts_teken, &tp);
132 
133 		tp.tp_row = scp->cursor_pos / scp->xsize;
134 		tp.tp_col = scp->cursor_pos % scp->xsize;
135 		teken_set_cursor(&ts->ts_teken, &tp);
136 		break;
137 	}
138 
139 	return (0);
140 }
141 
142 static int
143 scteken_term(scr_stat *scp, void **softc)
144 {
145 
146 	if (*softc == &reserved_teken_stat) {
147 		*softc = NULL;
148 		reserved_teken_stat.ts_busy = 0;
149 	}
150 	--sc_term_scteken.te_refcount;
151 
152 	return (0);
153 }
154 
155 static void
156 scteken_puts(scr_stat *scp, u_char *buf, int len, int kernel)
157 {
158 	teken_stat *ts = scp->ts;
159 	teken_attr_t backup, kattr;
160 
161 	scp->sc->write_in_progress++;
162 	if (kernel) {
163 		/* Use special colors for kernel messages. */
164 		backup = *teken_get_curattr(&ts->ts_teken);
165 		scteken_revattr(SC_KERNEL_CONS_ATTR, &kattr);
166 		teken_set_curattr(&ts->ts_teken, &kattr);
167 		teken_input(&ts->ts_teken, buf, len);
168 		teken_set_curattr(&ts->ts_teken, &backup);
169 	} else {
170 		/* Print user messages with regular colors. */
171 		teken_input(&ts->ts_teken, buf, len);
172 	}
173 	scp->sc->write_in_progress--;
174 }
175 
176 static int
177 scteken_ioctl(scr_stat *scp, struct tty *tp, u_long cmd, caddr_t data,
178 	     struct thread *td)
179 {
180 	teken_stat *ts = scp->ts;
181 	vid_info_t *vi;
182 	unsigned int attr;
183 
184 	switch (cmd) {
185 	case GIO_ATTR:      	/* get current attributes */
186 		*(int*)data =
187 		    scteken_attr(teken_get_curattr(&ts->ts_teken));
188 		return (0);
189 	case CONS_GETINFO:  	/* get current (virtual) console info */
190 		vi = (vid_info_t *)data;
191 		if (vi->size != sizeof(struct vid_info))
192 			return EINVAL;
193 
194 		attr = scteken_attr(teken_get_defattr(&ts->ts_teken));
195 		vi->mv_norm.fore = attr & 0x0f;
196 		vi->mv_norm.back = (attr >> 4) & 0x0f;
197 		vi->mv_rev.fore = vi->mv_norm.back;
198 		vi->mv_rev.back = vi->mv_norm.fore;
199 		/*
200 		 * The other fields are filled by the upper routine. XXX
201 		 */
202 		return (ENOIOCTL);
203 	}
204 
205 	return (ENOIOCTL);
206 }
207 
208 static void
209 scteken_default_attr(scr_stat *scp, int color, int rev_color)
210 {
211 	teken_stat *ts = scp->ts;
212 	teken_attr_t ta;
213 
214 	scteken_revattr(color, &ta);
215 	teken_set_defattr(&ts->ts_teken, &ta);
216 }
217 
218 static void
219 scteken_clear(scr_stat *scp)
220 {
221 
222 	sc_move_cursor(scp, 0, 0);
223 	sc_vtb_clear(&scp->vtb, scp->sc->scr_map[0x20], SC_NORM_ATTR << 8);
224 	mark_all(scp);
225 }
226 
227 static int
228 scteken_input(scr_stat *scp, int c, struct tty *tp)
229 {
230 
231 	return FALSE;
232 }
233 
234 static void
235 scteken_nop(void)
236 {
237 
238 }
239 
240 /*
241  * libteken routines.
242  */
243 
244 static const unsigned char fgcolors_normal[TC_NCOLORS] = {
245 	FG_BLACK,     FG_RED,          FG_GREEN,      FG_BROWN,
246 	FG_BLUE,      FG_MAGENTA,      FG_CYAN,       FG_LIGHTGREY,
247 };
248 
249 static const unsigned char fgcolors_bold[TC_NCOLORS] = {
250 	FG_DARKGREY,  FG_LIGHTRED,     FG_LIGHTGREEN, FG_YELLOW,
251 	FG_LIGHTBLUE, FG_LIGHTMAGENTA, FG_LIGHTCYAN,  FG_WHITE,
252 };
253 
254 static const unsigned char bgcolors[TC_NCOLORS] = {
255 	BG_BLACK,     BG_RED,          BG_GREEN,      BG_BROWN,
256 	BG_BLUE,      BG_MAGENTA,      BG_CYAN,       BG_LIGHTGREY,
257 };
258 
259 static void
260 scteken_revattr(unsigned char color, teken_attr_t *a)
261 {
262 	teken_color_t fg, bg;
263 
264 	/*
265 	 * XXX: Reverse conversion of syscons to teken attributes. Not
266 	 * realiable. Maybe we should turn it into a 1:1 mapping one of
267 	 * these days?
268 	 */
269 
270 	a->ta_format = 0;
271 	a->ta_fgcolor = TC_WHITE;
272 	a->ta_bgcolor = TC_BLACK;
273 
274 #ifdef FG_BLINK
275 	if (color & FG_BLINK) {
276 		a->ta_format |= TF_BLINK;
277 		color &= ~FG_BLINK;
278 	}
279 #endif /* FG_BLINK */
280 
281 	for (fg = 0; fg < TC_NCOLORS; fg++) {
282 		for (bg = 0; bg < TC_NCOLORS; bg++) {
283 			if ((fgcolors_normal[fg] | bgcolors[bg]) == color) {
284 				a->ta_fgcolor = fg;
285 				a->ta_bgcolor = bg;
286 				return;
287 			}
288 
289 			if ((fgcolors_bold[fg] | bgcolors[bg]) == color) {
290 				a->ta_fgcolor = fg;
291 				a->ta_bgcolor = bg;
292 				a->ta_format |= TF_BOLD;
293 				return;
294 			}
295 		}
296 	}
297 }
298 
299 static unsigned int
300 scteken_attr(const teken_attr_t *a)
301 {
302 	unsigned int attr = 0;
303 
304 	if (a->ta_format & TF_BOLD)
305 		attr |= fgcolors_bold[a->ta_fgcolor];
306 	else
307 		attr |= fgcolors_normal[a->ta_fgcolor];
308 	attr |= bgcolors[a->ta_bgcolor];
309 
310 #ifdef FG_UNDERLINE
311 	if (a->ta_format & TF_UNDERLINE)
312 		attr |= FG_UNDERLINE;
313 #endif /* FG_UNDERLINE */
314 #ifdef FG_BLINK
315 	if (a->ta_format & TF_BLINK)
316 		attr |= FG_BLINK;
317 #endif /* FG_BLINK */
318 
319 	return (attr);
320 }
321 
322 static void
323 scteken_bell(void *arg)
324 {
325 	scr_stat *scp = arg;
326 
327 	sc_bell(scp, scp->bell_pitch, scp->bell_duration);
328 }
329 
330 static void
331 scteken_cursor(void *arg, const teken_pos_t *p)
332 {
333 	scr_stat *scp = arg;
334 
335 	sc_move_cursor(scp, p->tp_col, p->tp_row);
336 }
337 
338 #ifdef TEKEN_UTF8
339 struct unicp437 {
340 	uint16_t	unicode_base;
341 	uint8_t		cp437_base;
342 	uint8_t		length;
343 };
344 
345 static const struct unicp437 cp437table[] = {
346 	{ 0x0020, 0x20, 0x5e }, { 0x00a0, 0x20, 0x00 },
347 	{ 0x00a1, 0xad, 0x00 }, { 0x00a2, 0x9b, 0x00 },
348 	{ 0x00a3, 0x9c, 0x00 }, { 0x00a5, 0x9d, 0x00 },
349 	{ 0x00a7, 0x15, 0x00 }, { 0x00aa, 0xa6, 0x00 },
350 	{ 0x00ab, 0xae, 0x00 }, { 0x00ac, 0xaa, 0x00 },
351 	{ 0x00b0, 0xf8, 0x00 }, { 0x00b1, 0xf1, 0x00 },
352 	{ 0x00b2, 0xfd, 0x00 }, { 0x00b5, 0xe6, 0x00 },
353 	{ 0x00b6, 0x14, 0x00 }, { 0x00b7, 0xfa, 0x00 },
354 	{ 0x00ba, 0xa7, 0x00 }, { 0x00bb, 0xaf, 0x00 },
355 	{ 0x00bc, 0xac, 0x00 }, { 0x00bd, 0xab, 0x00 },
356 	{ 0x00bf, 0xa8, 0x00 }, { 0x00c4, 0x8e, 0x01 },
357 	{ 0x00c6, 0x92, 0x00 }, { 0x00c7, 0x80, 0x00 },
358 	{ 0x00c9, 0x90, 0x00 }, { 0x00d1, 0xa5, 0x00 },
359 	{ 0x00d6, 0x99, 0x00 }, { 0x00dc, 0x9a, 0x00 },
360 	{ 0x00df, 0xe1, 0x00 }, { 0x00e0, 0x85, 0x00 },
361 	{ 0x00e1, 0xa0, 0x00 }, { 0x00e2, 0x83, 0x00 },
362 	{ 0x00e4, 0x84, 0x00 }, { 0x00e5, 0x86, 0x00 },
363 	{ 0x00e6, 0x91, 0x00 }, { 0x00e7, 0x87, 0x00 },
364 	{ 0x00e8, 0x8a, 0x00 }, { 0x00e9, 0x82, 0x00 },
365 	{ 0x00ea, 0x88, 0x01 }, { 0x00ec, 0x8d, 0x00 },
366 	{ 0x00ed, 0xa1, 0x00 }, { 0x00ee, 0x8c, 0x00 },
367 	{ 0x00ef, 0x8b, 0x00 }, { 0x00f0, 0xeb, 0x00 },
368 	{ 0x00f1, 0xa4, 0x00 }, { 0x00f2, 0x95, 0x00 },
369 	{ 0x00f3, 0xa2, 0x00 }, { 0x00f4, 0x93, 0x00 },
370 	{ 0x00f6, 0x94, 0x00 }, { 0x00f7, 0xf6, 0x00 },
371 	{ 0x00f8, 0xed, 0x00 }, { 0x00f9, 0x97, 0x00 },
372 	{ 0x00fa, 0xa3, 0x00 }, { 0x00fb, 0x96, 0x00 },
373 	{ 0x00fc, 0x81, 0x00 }, { 0x00ff, 0x98, 0x00 },
374 	{ 0x0192, 0x9f, 0x00 }, { 0x0393, 0xe2, 0x00 },
375 	{ 0x0398, 0xe9, 0x00 }, { 0x03a3, 0xe4, 0x00 },
376 	{ 0x03a6, 0xe8, 0x00 }, { 0x03a9, 0xea, 0x00 },
377 	{ 0x03b1, 0xe0, 0x01 }, { 0x03b4, 0xeb, 0x00 },
378 	{ 0x03b5, 0xee, 0x00 }, { 0x03bc, 0xe6, 0x00 },
379 	{ 0x03c0, 0xe3, 0x00 }, { 0x03c3, 0xe5, 0x00 },
380 	{ 0x03c4, 0xe7, 0x00 }, { 0x03c6, 0xed, 0x00 },
381 	{ 0x03d5, 0xed, 0x00 }, { 0x2010, 0x2d, 0x00 },
382 	{ 0x2014, 0x2d, 0x00 }, { 0x2018, 0x60, 0x00 },
383 	{ 0x2019, 0x27, 0x00 }, { 0x201c, 0x22, 0x00 },
384 	{ 0x201d, 0x22, 0x00 }, { 0x2022, 0x07, 0x00 },
385 	{ 0x203c, 0x13, 0x00 }, { 0x207f, 0xfc, 0x00 },
386 	{ 0x20a7, 0x9e, 0x00 }, { 0x20ac, 0xee, 0x00 },
387 	{ 0x2126, 0xea, 0x00 }, { 0x2190, 0x1b, 0x00 },
388 	{ 0x2191, 0x18, 0x00 }, { 0x2192, 0x1a, 0x00 },
389 	{ 0x2193, 0x19, 0x00 }, { 0x2194, 0x1d, 0x00 },
390 	{ 0x2195, 0x12, 0x00 }, { 0x21a8, 0x17, 0x00 },
391 	{ 0x2202, 0xeb, 0x00 }, { 0x2208, 0xee, 0x00 },
392 	{ 0x2211, 0xe4, 0x00 }, { 0x2212, 0x2d, 0x00 },
393 	{ 0x2219, 0xf9, 0x00 }, { 0x221a, 0xfb, 0x00 },
394 	{ 0x221e, 0xec, 0x00 }, { 0x221f, 0x1c, 0x00 },
395 	{ 0x2229, 0xef, 0x00 }, { 0x2248, 0xf7, 0x00 },
396 	{ 0x2261, 0xf0, 0x00 }, { 0x2264, 0xf3, 0x00 },
397 	{ 0x2265, 0xf2, 0x00 }, { 0x2302, 0x7f, 0x00 },
398 	{ 0x2310, 0xa9, 0x00 }, { 0x2320, 0xf4, 0x00 },
399 	{ 0x2321, 0xf5, 0x00 }, { 0x2500, 0xc4, 0x00 },
400 	{ 0x2502, 0xb3, 0x00 }, { 0x250c, 0xda, 0x00 },
401 	{ 0x2510, 0xbf, 0x00 }, { 0x2514, 0xc0, 0x00 },
402 	{ 0x2518, 0xd9, 0x00 }, { 0x251c, 0xc3, 0x00 },
403 	{ 0x2524, 0xb4, 0x00 }, { 0x252c, 0xc2, 0x00 },
404 	{ 0x2534, 0xc1, 0x00 }, { 0x253c, 0xc5, 0x00 },
405 	{ 0x2550, 0xcd, 0x00 }, { 0x2551, 0xba, 0x00 },
406 	{ 0x2552, 0xd5, 0x00 }, { 0x2553, 0xd6, 0x00 },
407 	{ 0x2554, 0xc9, 0x00 }, { 0x2555, 0xb8, 0x00 },
408 	{ 0x2556, 0xb7, 0x00 }, { 0x2557, 0xbb, 0x00 },
409 	{ 0x2558, 0xd4, 0x00 }, { 0x2559, 0xd3, 0x00 },
410 	{ 0x255a, 0xc8, 0x00 }, { 0x255b, 0xbe, 0x00 },
411 	{ 0x255c, 0xbd, 0x00 }, { 0x255d, 0xbc, 0x00 },
412 	{ 0x255e, 0xc6, 0x01 }, { 0x2560, 0xcc, 0x00 },
413 	{ 0x2561, 0xb5, 0x00 }, { 0x2562, 0xb6, 0x00 },
414 	{ 0x2563, 0xb9, 0x00 }, { 0x2564, 0xd1, 0x01 },
415 	{ 0x2566, 0xcb, 0x00 }, { 0x2567, 0xcf, 0x00 },
416 	{ 0x2568, 0xd0, 0x00 }, { 0x2569, 0xca, 0x00 },
417 	{ 0x256a, 0xd8, 0x00 }, { 0x256b, 0xd7, 0x00 },
418 	{ 0x256c, 0xce, 0x00 }, { 0x2580, 0xdf, 0x00 },
419 	{ 0x2584, 0xdc, 0x00 }, { 0x2588, 0xdb, 0x00 },
420 	{ 0x258c, 0xdd, 0x00 }, { 0x2590, 0xde, 0x00 },
421 	{ 0x2591, 0xb0, 0x02 }, { 0x25a0, 0xfe, 0x00 },
422 	{ 0x25ac, 0x16, 0x00 }, { 0x25b2, 0x1e, 0x00 },
423 	{ 0x25ba, 0x10, 0x00 }, { 0x25bc, 0x1f, 0x00 },
424 	{ 0x25c4, 0x11, 0x00 }, { 0x25cb, 0x09, 0x00 },
425 	{ 0x25d8, 0x08, 0x00 }, { 0x25d9, 0x0a, 0x00 },
426 	{ 0x263a, 0x01, 0x01 }, { 0x263c, 0x0f, 0x00 },
427 	{ 0x2640, 0x0c, 0x00 }, { 0x2642, 0x0b, 0x00 },
428 	{ 0x2660, 0x06, 0x00 }, { 0x2663, 0x05, 0x00 },
429 	{ 0x2665, 0x03, 0x01 }, { 0x266a, 0x0d, 0x01 },
430 };
431 
432 static void
433 scteken_get_cp437(teken_char_t *c, int *attr)
434 {
435 	int min, mid, max;
436 
437 	min = 0;
438 	max = (sizeof(cp437table) / sizeof(struct unicp437)) - 1;
439 
440 	if (*c < cp437table[0].unicode_base ||
441 	    *c > cp437table[max].unicode_base + cp437table[max].length)
442 		goto bad;
443 
444 	while (max >= min) {
445 		mid = (min + max) / 2;
446 		if (*c < cp437table[mid].unicode_base) {
447 			max = mid - 1;
448 		} else if (*c > cp437table[mid].unicode_base +
449 		    cp437table[mid].length) {
450 			min = mid + 1;
451 		} else {
452 			*c -= cp437table[mid].unicode_base;
453 			*c += cp437table[mid].cp437_base;
454 			return;
455 		}
456 	}
457 bad:
458 	/* Character not present in CP437. */
459 	*attr = (FG_RED|BG_BLACK) << 8;
460 	*c = '?';
461 }
462 #endif /* TEKEN_UTF8 */
463 
464 static void
465 scteken_putchar(void *arg, const teken_pos_t *tp, teken_char_t c,
466     const teken_attr_t *a)
467 {
468 	scr_stat *scp = arg;
469 	u_char *map;
470 	u_char ch;
471 	vm_offset_t p;
472 	int cursor, attr;
473 
474 	attr = scteken_attr(a) << 8;
475 #ifdef TEKEN_UTF8
476 	scteken_get_cp437(&c, &attr);
477 #endif /* TEKEN_UTF8 */
478 	ch = c;
479 
480 	map = scp->sc->scr_map;
481 
482 	cursor = tp->tp_row * scp->xsize + tp->tp_col;
483 	p = sc_vtb_pointer(&scp->vtb, cursor);
484 	sc_vtb_putchar(&scp->vtb, p, map[ch], attr);
485 
486 	mark_for_update(scp, cursor);
487 	/*
488 	 * XXX: Why do we need this? Only marking `cursor' should be
489 	 * enough. Without this line, we get artifacts.
490 	 */
491 	mark_for_update(scp, imin(cursor + 1, scp->xsize * scp->ysize - 1));
492 }
493 
494 static void
495 scteken_fill(void *arg, const teken_rect_t *r, teken_char_t c,
496     const teken_attr_t *a)
497 {
498 	scr_stat *scp = arg;
499 	u_char *map;
500 	u_char ch;
501 	unsigned int width;
502 	int attr, row;
503 
504 	attr = scteken_attr(a) << 8;
505 #ifdef TEKEN_UTF8
506 	scteken_get_cp437(&c, &attr);
507 #endif /* TEKEN_UTF8 */
508 	ch = c;
509 
510 	map = scp->sc->scr_map;
511 
512 	if (r->tr_begin.tp_col == 0 && r->tr_end.tp_col == scp->xsize) {
513 		/* Single contiguous region to fill. */
514 		sc_vtb_erase(&scp->vtb, r->tr_begin.tp_row * scp->xsize,
515 		    (r->tr_end.tp_row - r->tr_begin.tp_row) * scp->xsize,
516 		    map[ch], attr);
517 	} else {
518 		/* Fill display line by line. */
519 		width = r->tr_end.tp_col - r->tr_begin.tp_col;
520 
521 		for (row = r->tr_begin.tp_row; row < r->tr_end.tp_row; row++) {
522 			sc_vtb_erase(&scp->vtb, r->tr_begin.tp_row *
523 			    scp->xsize + r->tr_begin.tp_col,
524 			    width, map[ch], attr);
525 		}
526 	}
527 
528 	/* Mark begin and end positions to be refreshed. */
529 	mark_for_update(scp,
530 	    r->tr_begin.tp_row * scp->xsize + r->tr_begin.tp_col);
531 	mark_for_update(scp,
532 	    (r->tr_end.tp_row - 1) * scp->xsize + (r->tr_end.tp_col - 1));
533 	sc_remove_cutmarking(scp);
534 }
535 
536 static void
537 scteken_copy(void *arg, const teken_rect_t *r, const teken_pos_t *p)
538 {
539 	scr_stat *scp = arg;
540 	unsigned int width;
541 	int src, dst, end;
542 
543 #ifndef SC_NO_HISTORY
544 	/*
545 	 * We count a line of input as history if we perform a copy of
546 	 * one whole line upward. In other words: if a line of text gets
547 	 * overwritten by a rectangle that's right below it.
548 	 */
549 	if (scp->history != NULL &&
550 	    r->tr_begin.tp_col == 0 && r->tr_end.tp_col == scp->xsize &&
551 	    r->tr_begin.tp_row == p->tp_row + 1) {
552 		sc_hist_save_one_line(scp, p->tp_row);
553 	}
554 #endif
555 
556 	if (r->tr_begin.tp_col == 0 && r->tr_end.tp_col == scp->xsize) {
557 		/* Single contiguous region to copy. */
558 		sc_vtb_move(&scp->vtb, r->tr_begin.tp_row * scp->xsize,
559 		    p->tp_row * scp->xsize,
560 		    (r->tr_end.tp_row - r->tr_begin.tp_row) * scp->xsize);
561 	} else {
562 		/* Copy line by line. */
563 		width = r->tr_end.tp_col - r->tr_begin.tp_col;
564 
565 		if (p->tp_row < r->tr_begin.tp_row) {
566 			/* Copy from top to bottom. */
567 			src = r->tr_begin.tp_row * scp->xsize +
568 			    r->tr_begin.tp_col;
569 			end = r->tr_end.tp_row * scp->xsize +
570 			    r->tr_end.tp_col;
571 			dst = p->tp_row * scp->xsize + p->tp_col;
572 
573 			while (src < end) {
574 				sc_vtb_move(&scp->vtb, src, dst, width);
575 
576 				src += scp->xsize;
577 				dst += scp->xsize;
578 			}
579 		} else {
580 			/* Copy from bottom to top. */
581 			src = (r->tr_end.tp_row - 1) * scp->xsize +
582 			    r->tr_begin.tp_col;
583 			end = r->tr_begin.tp_row * scp->xsize +
584 			    r->tr_begin.tp_col;
585 			dst = (p->tp_row + r->tr_end.tp_row -
586 			    r->tr_begin.tp_row - 1) * scp->xsize + p->tp_col;
587 
588 			while (src >= end) {
589 				sc_vtb_move(&scp->vtb, src, dst, width);
590 
591 				src -= scp->xsize;
592 				dst -= scp->xsize;
593 			}
594 		}
595 	}
596 
597 	/* Mark begin and end positions to be refreshed. */
598 	mark_for_update(scp,
599 	    p->tp_row * scp->xsize + p->tp_col);
600 	mark_for_update(scp,
601 	    (p->tp_row + r->tr_end.tp_row - r->tr_begin.tp_row - 1) *
602 	    scp->xsize +
603 	    (p->tp_col + r->tr_end.tp_col - r->tr_begin.tp_col - 1));
604 	sc_remove_cutmarking(scp);
605 }
606 
607 static void
608 scteken_param(void *arg, int cmd, unsigned int value)
609 {
610 	scr_stat *scp = arg;
611 
612 	switch (cmd) {
613 	case TP_SHOWCURSOR:
614 		if (value) {
615 			sc_change_cursor_shape(scp,
616 			    CONS_RESET_CURSOR|CONS_LOCAL_CURSOR, -1, -1);
617 		} else {
618 			sc_change_cursor_shape(scp,
619 			    CONS_HIDDEN_CURSOR|CONS_LOCAL_CURSOR, -1, -1);
620 		}
621 		break;
622 	case TP_SWITCHVT:
623 		sc_switch_scr(scp->sc, value);
624 		break;
625 	case TP_SETBELLPD:
626 		scp->bell_pitch = TP_SETBELLPD_PITCH(value);
627 		scp->bell_duration = TP_SETBELLPD_DURATION(value);
628 		break;
629 	}
630 }
631 
632 static void
633 scteken_respond(void *arg, const void *buf, size_t len)
634 {
635 	scr_stat *scp = arg;
636 
637 	sc_respond(scp, buf, len);
638 }
639