Annotation of src/usr.bin/tmux/screen-write.c, Revision 1.96
1.96 ! nicm 1: /* $OpenBSD: screen-write.c,v 1.95 2016/10/05 12:36:36 nicm Exp $ */
1.1 nicm 2:
3: /*
1.84 nicm 4: * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1 nicm 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20:
1.56 nicm 21: #include <stdlib.h>
1.1 nicm 22: #include <string.h>
23:
24: #include "tmux.h"
25:
1.87 nicm 26: static void screen_write_initctx(struct screen_write_ctx *,
27: struct tty_ctx *);
28: static void screen_write_save_last(struct screen_write_ctx *,
29: struct tty_ctx *);
1.92 nicm 30: static void screen_write_flush(struct screen_write_ctx *);
1.87 nicm 31:
1.89 nicm 32: static int screen_write_overwrite(struct screen_write_ctx *,
33: struct grid_cell *, u_int);
1.87 nicm 34: static int screen_write_combine(struct screen_write_ctx *,
35: const struct utf8_data *);
1.1 nicm 36:
1.88 nicm 37: static const struct grid_cell screen_write_pad_cell = {
1.91 nicm 38: GRID_FLAG_PADDING, 0, 8, 8, { { 0 }, 0, 0, 0 }
1.88 nicm 39: };
40:
1.92 nicm 41: #define screen_dirty_bit(s, x, y) (((y) * screen_size_x(s)) + (x))
42: #define screen_dirty_clear(s, sx, sy, ex, ey) \
43: do { \
44: if (s->dirty != NULL) { \
45: bit_nclear(s->dirty, \
46: screen_dirty_bit(s, sx, sy), \
47: screen_dirty_bit(s, ex, ey)); \
48: } \
49: } while (0)
50:
51: /* Initialize writing with a window. */
1.1 nicm 52: void
1.71 nicm 53: screen_write_start(struct screen_write_ctx *ctx, struct window_pane *wp,
54: struct screen *s)
1.1 nicm 55: {
1.92 nicm 56: u_int size;
57: char tmp[16];
58: const char *cp = tmp;
59:
1.1 nicm 60: ctx->wp = wp;
61: if (wp != NULL && s == NULL)
62: ctx->s = wp->screen;
63: else
64: ctx->s = s;
1.92 nicm 65:
66: size = screen_size_x(ctx->s) * screen_size_y(ctx->s);
67: if (ctx->s->dirtysize != size) {
68: free(ctx->s->dirty);
69: ctx->s->dirty = NULL;
70: ctx->s->dirtysize = size;
71: }
72: ctx->dirty = 0;
73:
74: ctx->cells = ctx->written = ctx->skipped = 0;
75:
76: if (wp == NULL)
77: cp = "no pane";
78: else
79: snprintf(tmp, sizeof tmp, "pane %%%u", wp->id);
80: log_debug("%s: size %ux%u, %s", __func__, screen_size_x(ctx->s),
81: screen_size_y(ctx->s), cp);
1.1 nicm 82: }
83:
84: /* Finish writing. */
85: void
1.92 nicm 86: screen_write_stop(struct screen_write_ctx *ctx)
87: {
88: screen_write_flush(ctx);
89:
90: log_debug("%s: %u of %u written (dirty %u, skipped %u)", __func__,
91: ctx->written, ctx->cells, ctx->cells - ctx->written, ctx->skipped);
92: }
93:
94: /* Flush outstanding cell writes. */
95: static void
96: screen_write_flush(struct screen_write_ctx *ctx)
1.1 nicm 97: {
1.92 nicm 98: struct screen *s = ctx->s;
99: struct tty_ctx ttyctx;
100: u_int x, y, offset, cx, cy, dirty;
101: struct grid_cell gc;
102:
103: if (ctx->dirty == 0)
104: return;
105: dirty = 0;
106:
107: cx = s->cx;
108: cy = s->cy;
109:
110: offset = 0;
111: for (y = 0; y < screen_size_y(s); y++) {
112: for (x = 0; x < screen_size_x(s); x++) {
113: offset++;
114: if (!bit_test(s->dirty, offset - 1))
115: continue;
116: bit_clear(s->dirty, offset - 1);
117:
118: screen_write_cursormove(ctx, x, y);
119: grid_view_get_cell(s->grid, x, y, &gc);
120:
121: screen_write_initctx(ctx, &ttyctx);
122: ttyctx.cell = &gc;
123: tty_write(tty_cmd_cell, &ttyctx);
124: ctx->written++;
125:
126: if (++dirty == ctx->dirty)
127: break;
128: }
129: if (dirty == ctx->dirty)
130: break;
131: }
132:
133: s->cx = cx;
134: s->cy = cy;
1.52 nicm 135: }
136:
137: /* Reset screen state. */
138: void
139: screen_write_reset(struct screen_write_ctx *ctx)
140: {
1.61 nicm 141: struct screen *s = ctx->s;
1.52 nicm 142:
1.61 nicm 143: screen_reset_tabs(s);
144: screen_write_scrollregion(ctx, 0, screen_size_y(s) - 1);
1.63 nicm 145:
1.67 nicm 146: s->mode &= ~(MODE_INSERT|MODE_KCURSOR|MODE_KKEYPAD|MODE_FOCUSON);
1.82 nicm 147: s->mode &= ~(ALL_MOUSE_MODES|MODE_MOUSE_UTF8|MODE_MOUSE_SGR);
1.52 nicm 148:
149: screen_write_clearscreen(ctx);
150: screen_write_cursormove(ctx, 0, 0);
1.1 nicm 151: }
152:
153: /* Write character. */
154: void
1.86 nicm 155: screen_write_putc(struct screen_write_ctx *ctx, const struct grid_cell *gcp,
1.69 nicm 156: u_char ch)
1.1 nicm 157: {
1.86 nicm 158: struct grid_cell gc;
159:
160: memcpy(&gc, gcp, sizeof gc);
161:
162: utf8_set(&gc.data, ch);
163: screen_write_cell(ctx, &gc);
1.1 nicm 164: }
165:
1.24 nicm 166: /* Calculate string length, with embedded formatting. */
1.71 nicm 167: size_t
1.75 nicm 168: screen_write_cstrlen(const char *fmt, ...)
1.24 nicm 169: {
170: va_list ap;
171: char *msg, *msg2, *ptr, *ptr2;
172: size_t size;
173:
174: va_start(ap, fmt);
175: xvasprintf(&msg, fmt, ap);
176: va_end(ap);
177: msg2 = xmalloc(strlen(msg) + 1);
178:
179: ptr = msg;
180: ptr2 = msg2;
181: while (*ptr != '\0') {
182: if (ptr[0] == '#' && ptr[1] == '[') {
183: while (*ptr != ']' && *ptr != '\0')
184: ptr++;
185: if (*ptr == ']')
186: ptr++;
187: continue;
188: }
189: *ptr2++ = *ptr++;
190: }
191: *ptr2 = '\0';
192:
1.75 nicm 193: size = screen_write_strlen("%s", msg2);
1.24 nicm 194:
1.56 nicm 195: free(msg);
196: free(msg2);
1.24 nicm 197:
198: return (size);
199: }
200:
1.2 nicm 201: /* Calculate string length. */
1.71 nicm 202: size_t
1.75 nicm 203: screen_write_strlen(const char *fmt, ...)
1.2 nicm 204: {
1.36 nicm 205: va_list ap;
206: char *msg;
1.76 nicm 207: struct utf8_data ud;
1.36 nicm 208: u_char *ptr;
209: size_t left, size = 0;
1.79 nicm 210: enum utf8_state more;
1.2 nicm 211:
212: va_start(ap, fmt);
213: xvasprintf(&msg, fmt, ap);
214: va_end(ap);
215:
216: ptr = msg;
217: while (*ptr != '\0') {
1.79 nicm 218: if (*ptr > 0x7f && utf8_open(&ud, *ptr) == UTF8_MORE) {
1.36 nicm 219: ptr++;
1.2 nicm 220:
221: left = strlen(ptr);
1.77 nicm 222: if (left < (size_t)ud.size - 1)
1.36 nicm 223: break;
1.79 nicm 224: while ((more = utf8_append(&ud, *ptr)) == UTF8_MORE)
1.2 nicm 225: ptr++;
1.36 nicm 226: ptr++;
227:
1.79 nicm 228: if (more == UTF8_DONE)
1.78 nicm 229: size += ud.width;
1.2 nicm 230: } else {
1.75 nicm 231: if (*ptr > 0x1f && *ptr < 0x7f)
232: size++;
1.2 nicm 233: ptr++;
234: }
1.7 ray 235: }
1.2 nicm 236:
1.56 nicm 237: free(msg);
1.2 nicm 238: return (size);
239: }
240:
1.3 nicm 241: /* Write simple string (no UTF-8 or maximum length). */
1.71 nicm 242: void
1.86 nicm 243: screen_write_puts(struct screen_write_ctx *ctx, const struct grid_cell *gcp,
1.71 nicm 244: const char *fmt, ...)
1.1 nicm 245: {
246: va_list ap;
247:
248: va_start(ap, fmt);
1.86 nicm 249: screen_write_vnputs(ctx, -1, gcp, fmt, ap);
1.2 nicm 250: va_end(ap);
251: }
252:
253: /* Write string with length limit (-1 for unlimited). */
1.71 nicm 254: void
255: screen_write_nputs(struct screen_write_ctx *ctx, ssize_t maxlen,
1.86 nicm 256: const struct grid_cell *gcp, const char *fmt, ...)
1.2 nicm 257: {
258: va_list ap;
259:
260: va_start(ap, fmt);
1.86 nicm 261: screen_write_vnputs(ctx, maxlen, gcp, fmt, ap);
1.2 nicm 262: va_end(ap);
263: }
264:
265: void
1.3 nicm 266: screen_write_vnputs(struct screen_write_ctx *ctx, ssize_t maxlen,
1.86 nicm 267: const struct grid_cell *gcp, const char *fmt, va_list ap)
1.2 nicm 268: {
1.86 nicm 269: struct grid_cell gc;
270: struct utf8_data *ud = &gc.data;
1.36 nicm 271: char *msg;
272: u_char *ptr;
273: size_t left, size = 0;
1.79 nicm 274: enum utf8_state more;
1.2 nicm 275:
1.86 nicm 276: memcpy(&gc, gcp, sizeof gc);
1.1 nicm 277: xvasprintf(&msg, fmt, ap);
278:
1.2 nicm 279: ptr = msg;
280: while (*ptr != '\0') {
1.86 nicm 281: if (*ptr > 0x7f && utf8_open(ud, *ptr) == UTF8_MORE) {
1.36 nicm 282: ptr++;
1.2 nicm 283:
284: left = strlen(ptr);
1.86 nicm 285: if (left < (size_t)ud->size - 1)
1.36 nicm 286: break;
1.86 nicm 287: while ((more = utf8_append(ud, *ptr)) == UTF8_MORE)
1.2 nicm 288: ptr++;
1.36 nicm 289: ptr++;
1.7 ray 290:
1.86 nicm 291: if (more != UTF8_DONE)
292: continue;
293: if (maxlen > 0 && size + ud->width > (size_t)maxlen) {
294: while (size < (size_t)maxlen) {
295: screen_write_putc(ctx, &gc, ' ');
296: size++;
1.2 nicm 297: }
1.86 nicm 298: break;
1.2 nicm 299: }
1.86 nicm 300: size += ud->width;
301: screen_write_cell(ctx, &gc);
1.2 nicm 302: } else {
1.86 nicm 303: if (maxlen > 0 && size + 1 > (size_t)maxlen)
1.2 nicm 304: break;
305:
1.57 nicm 306: if (*ptr == '\001')
1.86 nicm 307: gc.attr ^= GRID_ATTR_CHARSET;
1.75 nicm 308: else if (*ptr > 0x1f && *ptr < 0x7f) {
1.57 nicm 309: size++;
1.86 nicm 310: screen_write_putc(ctx, &gc, *ptr);
1.57 nicm 311: }
1.2 nicm 312: ptr++;
313: }
314: }
1.1 nicm 315:
1.56 nicm 316: free(msg);
1.24 nicm 317: }
318:
319: /* Write string, similar to nputs, but with embedded formatting (#[]). */
1.71 nicm 320: void
1.75 nicm 321: screen_write_cnputs(struct screen_write_ctx *ctx, ssize_t maxlen,
1.86 nicm 322: const struct grid_cell *gcp, const char *fmt, ...)
1.24 nicm 323: {
1.86 nicm 324: struct grid_cell gc;
325: struct utf8_data *ud = &gc.data;
1.24 nicm 326: va_list ap;
327: char *msg;
1.36 nicm 328: u_char *ptr, *last;
1.24 nicm 329: size_t left, size = 0;
1.79 nicm 330: enum utf8_state more;
1.24 nicm 331:
1.86 nicm 332: memcpy(&gc, gcp, sizeof gc);
333:
1.24 nicm 334: va_start(ap, fmt);
335: xvasprintf(&msg, fmt, ap);
336: va_end(ap);
337:
338: ptr = msg;
339: while (*ptr != '\0') {
340: if (ptr[0] == '#' && ptr[1] == '[') {
341: ptr += 2;
342: last = ptr + strcspn(ptr, "]");
343: if (*last == '\0') {
344: /* No ]. Not much point in doing anything. */
345: break;
346: }
347: *last = '\0';
348:
1.86 nicm 349: style_parse(gcp, &gc, ptr);
1.24 nicm 350: ptr = last + 1;
351: continue;
352: }
353:
1.86 nicm 354: if (*ptr > 0x7f && utf8_open(ud, *ptr) == UTF8_MORE) {
1.36 nicm 355: ptr++;
1.24 nicm 356:
357: left = strlen(ptr);
1.86 nicm 358: if (left < (size_t)ud->size - 1)
1.36 nicm 359: break;
1.86 nicm 360: while ((more = utf8_append(ud, *ptr)) == UTF8_MORE)
1.24 nicm 361: ptr++;
1.36 nicm 362: ptr++;
1.24 nicm 363:
1.86 nicm 364: if (more != UTF8_DONE)
365: continue;
366: if (maxlen > 0 && size + ud->width > (size_t)maxlen) {
367: while (size < (size_t)maxlen) {
368: screen_write_putc(ctx, &gc, ' ');
369: size++;
1.24 nicm 370: }
1.86 nicm 371: break;
1.24 nicm 372: }
1.86 nicm 373: size += ud->width;
374: screen_write_cell(ctx, &gc);
1.24 nicm 375: } else {
1.86 nicm 376: if (maxlen > 0 && size + 1 > (size_t)maxlen)
1.24 nicm 377: break;
378:
1.75 nicm 379: if (*ptr > 0x1f && *ptr < 0x7f) {
380: size++;
1.86 nicm 381: screen_write_putc(ctx, &gc, *ptr);
1.75 nicm 382: }
1.24 nicm 383: ptr++;
384: }
385: }
386:
1.56 nicm 387: free(msg);
1.1 nicm 388: }
389:
390: /* Copy from another screen. */
391: void
1.95 nicm 392: screen_write_copy(struct screen_write_ctx *ctx, struct screen *src, u_int px,
393: u_int py, u_int nx, u_int ny)
1.1 nicm 394: {
395: struct screen *s = ctx->s;
396: struct grid *gd = src->grid;
1.77 nicm 397: struct grid_cell gc;
1.96 ! nicm 398: u_int xx, yy, cx, cy;
1.1 nicm 399:
400: cx = s->cx;
401: cy = s->cy;
1.96 ! nicm 402:
1.1 nicm 403: for (yy = py; yy < py + ny; yy++) {
1.96 ! nicm 404: for (xx = px; xx < px + nx; xx++) {
! 405: grid_get_cell(gd, xx, yy, &gc);
! 406: screen_write_cell(ctx, &gc);
! 407: }
! 408:
1.1 nicm 409: cy++;
410: screen_write_cursormove(ctx, cx, cy);
411: }
412: }
413:
1.17 nicm 414: /* Set up context for TTY command. */
1.87 nicm 415: static void
416: screen_write_initctx(struct screen_write_ctx *ctx, struct tty_ctx *ttyctx)
1.1 nicm 417: {
1.87 nicm 418: struct screen *s = ctx->s;
1.1 nicm 419:
1.17 nicm 420: ttyctx->wp = ctx->wp;
1.1 nicm 421:
1.17 nicm 422: ttyctx->ocx = s->cx;
423: ttyctx->ocy = s->cy;
424:
425: ttyctx->orlower = s->rlower;
426: ttyctx->orupper = s->rupper;
1.87 nicm 427: }
1.31 nicm 428:
1.87 nicm 429: /* Save last cell on screen. */
430: static void
431: screen_write_save_last(struct screen_write_ctx *ctx, struct tty_ctx *ttyctx)
432: {
433: struct screen *s = ctx->s;
434: struct grid *gd = s->grid;
435: struct grid_cell gc;
436: u_int xx;
1.31 nicm 437:
1.77 nicm 438: memcpy(&gc, &grid_default_cell, sizeof gc);
1.38 nicm 439: for (xx = 1; xx <= screen_size_x(s); xx++) {
1.77 nicm 440: grid_view_get_cell(gd, screen_size_x(s) - xx, s->cy, &gc);
441: if (~gc.flags & GRID_FLAG_PADDING)
1.31 nicm 442: break;
443: }
1.77 nicm 444: memcpy(&ttyctx->last_cell, &gc, sizeof ttyctx->last_cell);
1.1 nicm 445: }
446:
1.61 nicm 447: /* Set a mode. */
448: void
449: screen_write_mode_set(struct screen_write_ctx *ctx, int mode)
450: {
451: struct screen *s = ctx->s;
452:
453: s->mode |= mode;
454: }
455:
456: /* Clear a mode. */
457: void
458: screen_write_mode_clear(struct screen_write_ctx *ctx, int mode)
459: {
460: struct screen *s = ctx->s;
461:
462: s->mode &= ~mode;
463: }
464:
1.1 nicm 465: /* Cursor up by ny. */
466: void
467: screen_write_cursorup(struct screen_write_ctx *ctx, u_int ny)
468: {
469: struct screen *s = ctx->s;
470:
471: if (ny == 0)
472: ny = 1;
473:
1.12 nicm 474: if (s->cy < s->rupper) {
475: /* Above region. */
476: if (ny > s->cy)
477: ny = s->cy;
478: } else {
479: /* Below region. */
480: if (ny > s->cy - s->rupper)
481: ny = s->cy - s->rupper;
482: }
1.66 nicm 483: if (s->cx == screen_size_x(s))
484: s->cx--;
1.1 nicm 485: if (ny == 0)
486: return;
487:
488: s->cy -= ny;
489: }
490:
491: /* Cursor down by ny. */
492: void
493: screen_write_cursordown(struct screen_write_ctx *ctx, u_int ny)
494: {
495: struct screen *s = ctx->s;
496:
497: if (ny == 0)
498: ny = 1;
499:
1.12 nicm 500: if (s->cy > s->rlower) {
501: /* Below region. */
502: if (ny > screen_size_y(s) - 1 - s->cy)
503: ny = screen_size_y(s) - 1 - s->cy;
504: } else {
505: /* Above region. */
506: if (ny > s->rlower - s->cy)
507: ny = s->rlower - s->cy;
508: }
1.66 nicm 509: if (s->cx == screen_size_x(s))
510: s->cx--;
1.1 nicm 511: if (ny == 0)
512: return;
513:
514: s->cy += ny;
515: }
516:
517: /* Cursor right by nx. */
518: void
519: screen_write_cursorright(struct screen_write_ctx *ctx, u_int nx)
520: {
521: struct screen *s = ctx->s;
522:
523: if (nx == 0)
524: nx = 1;
525:
526: if (nx > screen_size_x(s) - 1 - s->cx)
527: nx = screen_size_x(s) - 1 - s->cx;
528: if (nx == 0)
529: return;
530:
531: s->cx += nx;
532: }
533:
534: /* Cursor left by nx. */
535: void
536: screen_write_cursorleft(struct screen_write_ctx *ctx, u_int nx)
537: {
538: struct screen *s = ctx->s;
539:
540: if (nx == 0)
541: nx = 1;
542:
543: if (nx > s->cx)
544: nx = s->cx;
545: if (nx == 0)
546: return;
547:
548: s->cx -= nx;
1.5 nicm 549: }
550:
1.29 nicm 551: /* Backspace; cursor left unless at start of wrapped line when can move up. */
552: void
553: screen_write_backspace(struct screen_write_ctx *ctx)
554: {
555: struct screen *s = ctx->s;
556: struct grid_line *gl;
557:
558: if (s->cx == 0) {
559: if (s->cy == 0)
560: return;
561: gl = &s->grid->linedata[s->grid->hsize + s->cy - 1];
562: if (gl->flags & GRID_LINE_WRAPPED) {
563: s->cy--;
564: s->cx = screen_size_x(s) - 1;
565: }
566: } else
567: s->cx--;
568: }
569:
1.5 nicm 570: /* VT100 alignment test. */
571: void
572: screen_write_alignmenttest(struct screen_write_ctx *ctx)
573: {
574: struct screen *s = ctx->s;
1.17 nicm 575: struct tty_ctx ttyctx;
1.5 nicm 576: struct grid_cell gc;
577: u_int xx, yy;
1.92 nicm 578: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.5 nicm 579:
1.87 nicm 580: screen_write_initctx(ctx, &ttyctx);
1.17 nicm 581:
1.92 nicm 582: screen_dirty_clear(s, 0, 0, sx - 1, sy - 1);
583:
1.5 nicm 584: memcpy(&gc, &grid_default_cell, sizeof gc);
1.77 nicm 585: utf8_set(&gc.data, 'E');
1.7 ray 586:
1.5 nicm 587: for (yy = 0; yy < screen_size_y(s); yy++) {
588: for (xx = 0; xx < screen_size_x(s); xx++)
589: grid_view_set_cell(s->grid, xx, yy, &gc);
590: }
1.7 ray 591:
1.5 nicm 592: s->cx = 0;
593: s->cy = 0;
594:
595: s->rupper = 0;
596: s->rlower = screen_size_y(s) - 1;
597:
1.17 nicm 598: tty_write(tty_cmd_alignmenttest, &ttyctx);
1.1 nicm 599: }
600:
601: /* Insert nx characters. */
602: void
603: screen_write_insertcharacter(struct screen_write_ctx *ctx, u_int nx)
604: {
605: struct screen *s = ctx->s;
1.17 nicm 606: struct tty_ctx ttyctx;
1.1 nicm 607:
608: if (nx == 0)
609: nx = 1;
610:
1.9 nicm 611: if (nx > screen_size_x(s) - s->cx)
612: nx = screen_size_x(s) - s->cx;
1.1 nicm 613: if (nx == 0)
614: return;
615:
1.92 nicm 616: screen_write_flush(ctx);
1.87 nicm 617: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 618:
619: if (s->cx <= screen_size_x(s) - 1)
620: grid_view_insert_cells(s->grid, s->cx, s->cy, nx);
621:
1.17 nicm 622: ttyctx.num = nx;
623: tty_write(tty_cmd_insertcharacter, &ttyctx);
1.1 nicm 624: }
625:
626: /* Delete nx characters. */
627: void
628: screen_write_deletecharacter(struct screen_write_ctx *ctx, u_int nx)
629: {
630: struct screen *s = ctx->s;
1.17 nicm 631: struct tty_ctx ttyctx;
1.1 nicm 632:
633: if (nx == 0)
634: nx = 1;
635:
1.9 nicm 636: if (nx > screen_size_x(s) - s->cx)
637: nx = screen_size_x(s) - s->cx;
1.1 nicm 638: if (nx == 0)
639: return;
640:
1.92 nicm 641: screen_write_flush(ctx);
1.87 nicm 642: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 643:
644: if (s->cx <= screen_size_x(s) - 1)
645: grid_view_delete_cells(s->grid, s->cx, s->cy, nx);
646:
1.17 nicm 647: ttyctx.num = nx;
648: tty_write(tty_cmd_deletecharacter, &ttyctx);
1.59 nicm 649: }
650:
651: /* Clear nx characters. */
652: void
653: screen_write_clearcharacter(struct screen_write_ctx *ctx, u_int nx)
654: {
655: struct screen *s = ctx->s;
656: struct tty_ctx ttyctx;
657:
658: if (nx == 0)
659: nx = 1;
660:
661: if (nx > screen_size_x(s) - s->cx)
662: nx = screen_size_x(s) - s->cx;
663: if (nx == 0)
664: return;
665:
1.87 nicm 666: screen_write_initctx(ctx, &ttyctx);
1.59 nicm 667:
1.92 nicm 668: if (s->cx <= screen_size_x(s) - 1) {
669: screen_dirty_clear(s, s->cx, s->cy, s->cx + nx - 1, s->cy);
1.59 nicm 670: grid_view_clear(s->grid, s->cx, s->cy, nx, 1);
1.92 nicm 671: } else
672: return;
1.59 nicm 673:
674: ttyctx.num = nx;
675: tty_write(tty_cmd_clearcharacter, &ttyctx);
1.1 nicm 676: }
677:
678: /* Insert ny lines. */
679: void
680: screen_write_insertline(struct screen_write_ctx *ctx, u_int ny)
681: {
682: struct screen *s = ctx->s;
1.17 nicm 683: struct tty_ctx ttyctx;
1.1 nicm 684:
685: if (ny == 0)
686: ny = 1;
687:
1.11 nicm 688: if (s->cy < s->rupper || s->cy > s->rlower) {
689: if (ny > screen_size_y(s) - s->cy)
690: ny = screen_size_y(s) - s->cy;
691: if (ny == 0)
692: return;
693:
1.92 nicm 694: screen_write_flush(ctx);
1.87 nicm 695: screen_write_initctx(ctx, &ttyctx);
1.11 nicm 696:
697: grid_view_insert_lines(s->grid, s->cy, ny);
698:
1.17 nicm 699: ttyctx.num = ny;
700: tty_write(tty_cmd_insertline, &ttyctx);
1.11 nicm 701: return;
702: }
703:
704: if (ny > s->rlower + 1 - s->cy)
705: ny = s->rlower + 1 - s->cy;
1.1 nicm 706: if (ny == 0)
707: return;
1.41 nicm 708:
1.92 nicm 709: screen_write_flush(ctx);
1.87 nicm 710: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 711:
712: if (s->cy < s->rupper || s->cy > s->rlower)
713: grid_view_insert_lines(s->grid, s->cy, ny);
1.10 nicm 714: else
715: grid_view_insert_lines_region(s->grid, s->rlower, s->cy, ny);
1.1 nicm 716:
1.17 nicm 717: ttyctx.num = ny;
718: tty_write(tty_cmd_insertline, &ttyctx);
1.1 nicm 719: }
720:
721: /* Delete ny lines. */
722: void
723: screen_write_deleteline(struct screen_write_ctx *ctx, u_int ny)
724: {
725: struct screen *s = ctx->s;
1.17 nicm 726: struct tty_ctx ttyctx;
1.1 nicm 727:
728: if (ny == 0)
729: ny = 1;
730:
1.11 nicm 731: if (s->cy < s->rupper || s->cy > s->rlower) {
732: if (ny > screen_size_y(s) - s->cy)
733: ny = screen_size_y(s) - s->cy;
734: if (ny == 0)
735: return;
736:
1.92 nicm 737: screen_write_flush(ctx);
1.87 nicm 738: screen_write_initctx(ctx, &ttyctx);
1.11 nicm 739:
740: grid_view_delete_lines(s->grid, s->cy, ny);
741:
1.17 nicm 742: ttyctx.num = ny;
743: tty_write(tty_cmd_deleteline, &ttyctx);
1.11 nicm 744: return;
745: }
1.41 nicm 746:
1.11 nicm 747: if (ny > s->rlower + 1 - s->cy)
748: ny = s->rlower + 1 - s->cy;
1.1 nicm 749: if (ny == 0)
750: return;
751:
1.92 nicm 752: screen_write_flush(ctx);
1.87 nicm 753: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 754:
755: if (s->cy < s->rupper || s->cy > s->rlower)
756: grid_view_delete_lines(s->grid, s->cy, ny);
1.10 nicm 757: else
758: grid_view_delete_lines_region(s->grid, s->rlower, s->cy, ny);
1.1 nicm 759:
1.17 nicm 760: ttyctx.num = ny;
761: tty_write(tty_cmd_deleteline, &ttyctx);
1.1 nicm 762: }
763:
764: /* Clear line at cursor. */
765: void
766: screen_write_clearline(struct screen_write_ctx *ctx)
767: {
1.92 nicm 768: struct screen *s = ctx->s;
769: struct grid_line *gl;
770: struct tty_ctx ttyctx;
771: u_int sx = screen_size_x(s);
1.1 nicm 772:
1.87 nicm 773: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 774:
1.92 nicm 775: gl = &s->grid->linedata[s->grid->hsize + s->cy];
776: if (gl->cellsize != 0) {
777: screen_dirty_clear(s, 0, s->cy, sx - 1, s->cy);
778: grid_view_clear(s->grid, 0, s->cy, sx, 1);
779: } else
780: return;
1.1 nicm 781:
1.17 nicm 782: tty_write(tty_cmd_clearline, &ttyctx);
1.1 nicm 783: }
784:
785: /* Clear to end of line from cursor. */
786: void
787: screen_write_clearendofline(struct screen_write_ctx *ctx)
788: {
1.92 nicm 789: struct screen *s = ctx->s;
790: struct grid_line *gl;
791: struct tty_ctx ttyctx;
792: u_int sx = screen_size_x(s);
1.1 nicm 793:
1.87 nicm 794: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 795:
1.92 nicm 796: gl = &s->grid->linedata[s->grid->hsize + s->cy];
797: if (s->cx <= sx - 1 && s->cx < gl->cellsize) {
798: screen_dirty_clear(s, s->cx, s->cy, sx - 1, s->cy);
1.1 nicm 799: grid_view_clear(s->grid, s->cx, s->cy, sx - s->cx, 1);
1.92 nicm 800: } else
801: return;
1.1 nicm 802:
1.41 nicm 803: tty_write(tty_cmd_clearendofline, &ttyctx);
1.1 nicm 804: }
805:
806: /* Clear to start of line from cursor. */
807: void
808: screen_write_clearstartofline(struct screen_write_ctx *ctx)
809: {
810: struct screen *s = ctx->s;
1.17 nicm 811: struct tty_ctx ttyctx;
1.92 nicm 812: u_int sx = screen_size_x(s);
1.1 nicm 813:
1.87 nicm 814: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 815:
1.92 nicm 816: if (s->cx > sx - 1) {
817: screen_dirty_clear(s, 0, s->cy, sx - 1, s->cy);
1.1 nicm 818: grid_view_clear(s->grid, 0, s->cy, sx, 1);
1.92 nicm 819: } else {
820: screen_dirty_clear(s, 0, s->cy, s->cx, s->cy);
1.1 nicm 821: grid_view_clear(s->grid, 0, s->cy, s->cx + 1, 1);
1.92 nicm 822: }
1.1 nicm 823:
1.17 nicm 824: tty_write(tty_cmd_clearstartofline, &ttyctx);
1.1 nicm 825: }
826:
827: /* Move cursor to px,py. */
828: void
829: screen_write_cursormove(struct screen_write_ctx *ctx, u_int px, u_int py)
830: {
831: struct screen *s = ctx->s;
832:
833: if (px > screen_size_x(s) - 1)
834: px = screen_size_x(s) - 1;
835: if (py > screen_size_y(s) - 1)
836: py = screen_size_y(s) - 1;
837:
838: s->cx = px;
839: s->cy = py;
840: }
841:
842: /* Reverse index (up with scroll). */
843: void
844: screen_write_reverseindex(struct screen_write_ctx *ctx)
845: {
846: struct screen *s = ctx->s;
1.17 nicm 847: struct tty_ctx ttyctx;
1.1 nicm 848:
1.87 nicm 849: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 850:
1.92 nicm 851: if (s->cy == s->rupper) {
852: screen_write_flush(ctx);
1.1 nicm 853: grid_view_scroll_region_down(s->grid, s->rupper, s->rlower);
1.92 nicm 854: } else if (s->cy > 0)
1.1 nicm 855: s->cy--;
856:
1.17 nicm 857: tty_write(tty_cmd_reverseindex, &ttyctx);
1.1 nicm 858: }
859:
860: /* Set scroll region. */
861: void
1.83 nicm 862: screen_write_scrollregion(struct screen_write_ctx *ctx, u_int rupper,
863: u_int rlower)
1.1 nicm 864: {
865: struct screen *s = ctx->s;
866:
867: if (rupper > screen_size_y(s) - 1)
868: rupper = screen_size_y(s) - 1;
869: if (rlower > screen_size_y(s) - 1)
870: rlower = screen_size_y(s) - 1;
1.13 nicm 871: if (rupper >= rlower) /* cannot be one line */
1.1 nicm 872: return;
873:
874: /* Cursor moves to top-left. */
875: s->cx = 0;
876: s->cy = 0;
877:
878: s->rupper = rupper;
879: s->rlower = rlower;
880: }
881:
1.34 nicm 882: /* Line feed. */
1.1 nicm 883: void
1.34 nicm 884: screen_write_linefeed(struct screen_write_ctx *ctx, int wrapped)
1.1 nicm 885: {
1.20 nicm 886: struct screen *s = ctx->s;
887: struct grid_line *gl;
1.34 nicm 888: struct tty_ctx ttyctx;
1.92 nicm 889: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.34 nicm 890:
1.87 nicm 891: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 892:
1.20 nicm 893: gl = &s->grid->linedata[s->grid->hsize + s->cy];
894: if (wrapped)
895: gl->flags |= GRID_LINE_WRAPPED;
1.73 nicm 896: else
897: gl->flags &= ~GRID_LINE_WRAPPED;
1.20 nicm 898:
1.92 nicm 899: if (s->cy == s->rlower) {
900: screen_dirty_clear(s, 0, s->rupper, sx - 1, s->rupper);
901: screen_write_flush(ctx);
1.1 nicm 902: grid_view_scroll_region_up(s->grid, s->rupper, s->rlower);
1.92 nicm 903: } else if (s->cy < sy - 1)
1.1 nicm 904: s->cy++;
905:
1.34 nicm 906: ttyctx.num = wrapped;
1.41 nicm 907: tty_write(tty_cmd_linefeed, &ttyctx);
1.1 nicm 908: }
909:
910: /* Carriage return (cursor to start of line). */
911: void
912: screen_write_carriagereturn(struct screen_write_ctx *ctx)
913: {
914: struct screen *s = ctx->s;
915:
916: s->cx = 0;
917: }
918:
919: /* Clear to end of screen from cursor. */
920: void
921: screen_write_clearendofscreen(struct screen_write_ctx *ctx)
922: {
923: struct screen *s = ctx->s;
1.17 nicm 924: struct tty_ctx ttyctx;
1.92 nicm 925: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.1 nicm 926:
1.87 nicm 927: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 928:
1.46 nicm 929: /* Scroll into history if it is enabled and clearing entire screen. */
1.92 nicm 930: if (s->cy == 0 && s->grid->flags & GRID_HISTORY) {
931: screen_dirty_clear(s, 0, 0, sx - 1, sy - 1);
1.46 nicm 932: grid_view_clear_history(s->grid);
1.92 nicm 933: } else {
934: if (s->cx <= sx - 1) {
935: screen_dirty_clear(s, s->cx, s->cy, sx - 1, s->cy);
1.46 nicm 936: grid_view_clear(s->grid, s->cx, s->cy, sx - s->cx, 1);
1.92 nicm 937: }
938: screen_dirty_clear(s, 0, s->cy + 1, sx - 1, sy - 1);
1.46 nicm 939: grid_view_clear(s->grid, 0, s->cy + 1, sx, sy - (s->cy + 1));
940: }
1.1 nicm 941:
1.17 nicm 942: tty_write(tty_cmd_clearendofscreen, &ttyctx);
1.1 nicm 943: }
944:
945: /* Clear to start of screen. */
946: void
947: screen_write_clearstartofscreen(struct screen_write_ctx *ctx)
948: {
949: struct screen *s = ctx->s;
1.17 nicm 950: struct tty_ctx ttyctx;
1.92 nicm 951: u_int sx = screen_size_x(s);
1.1 nicm 952:
1.87 nicm 953: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 954:
1.92 nicm 955: if (s->cy > 0) {
956: screen_dirty_clear(s, 0, 0, sx - 1, s->cy);
1.4 nicm 957: grid_view_clear(s->grid, 0, 0, sx, s->cy);
1.92 nicm 958: }
959: if (s->cx > sx - 1) {
960: screen_dirty_clear(s, 0, s->cy, sx - 1, s->cy);
1.1 nicm 961: grid_view_clear(s->grid, 0, s->cy, sx, 1);
1.92 nicm 962: } else {
963: screen_dirty_clear(s, 0, s->cy, s->cx, s->cy);
1.4 nicm 964: grid_view_clear(s->grid, 0, s->cy, s->cx + 1, 1);
1.92 nicm 965: }
1.1 nicm 966:
1.17 nicm 967: tty_write(tty_cmd_clearstartofscreen, &ttyctx);
1.1 nicm 968: }
969:
970: /* Clear entire screen. */
971: void
972: screen_write_clearscreen(struct screen_write_ctx *ctx)
973: {
974: struct screen *s = ctx->s;
1.17 nicm 975: struct tty_ctx ttyctx;
1.92 nicm 976: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.1 nicm 977:
1.87 nicm 978: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 979:
1.92 nicm 980: screen_dirty_clear(s, 0, 0, sx - 1, sy - 1);
981:
1.46 nicm 982: /* Scroll into history if it is enabled. */
983: if (s->grid->flags & GRID_HISTORY)
984: grid_view_clear_history(s->grid);
1.83 nicm 985: else
986: grid_view_clear(s->grid, 0, 0, sx, sy);
1.1 nicm 987:
1.17 nicm 988: tty_write(tty_cmd_clearscreen, &ttyctx);
1.51 nicm 989: }
990:
991: /* Clear entire history. */
992: void
993: screen_write_clearhistory(struct screen_write_ctx *ctx)
994: {
995: struct screen *s = ctx->s;
996: struct grid *gd = s->grid;
997:
998: grid_move_lines(gd, 0, gd->hsize, gd->sy);
1.93 nicm 999: gd->hscrolled = gd->hsize = 0;
1.1 nicm 1000: }
1001:
1002: /* Write cell data. */
1003: void
1.60 nicm 1004: screen_write_cell(struct screen_write_ctx *ctx, const struct grid_cell *gc)
1.1 nicm 1005: {
1006: struct screen *s = ctx->s;
1007: struct grid *gd = s->grid;
1.15 nicm 1008: struct tty_ctx ttyctx;
1.64 nicm 1009: u_int width, xx, last;
1.92 nicm 1010: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1011: struct grid_line *gl;
1.89 nicm 1012: struct grid_cell tmp_gc, now_gc;
1.92 nicm 1013: struct grid_cell_entry *gce;
1014: int insert, skip, selected, wrapped = 0;
1015:
1016: ctx->cells++;
1.1 nicm 1017:
1018: /* Ignore padding. */
1019: if (gc->flags & GRID_FLAG_PADDING)
1020: return;
1.77 nicm 1021: width = gc->data.width;
1.1 nicm 1022:
1.32 nicm 1023: /*
1024: * If this is a wide character and there is no room on the screen, for
1025: * the entire character, don't print it.
1026: */
1.92 nicm 1027: if (!(s->mode & MODE_WRAP) && (width > 1 &&
1028: (width > sx || (s->cx != sx && s->cx > sx - width))))
1.32 nicm 1029: return;
1030:
1.35 nicm 1031: /*
1032: * If the width is zero, combine onto the previous character, if
1.41 nicm 1033: * there is space.
1.35 nicm 1034: */
1.1 nicm 1035: if (width == 0) {
1.77 nicm 1036: if (screen_write_combine(ctx, &gc->data) == 0) {
1.87 nicm 1037: screen_write_initctx(ctx, &ttyctx);
1.35 nicm 1038: tty_write(tty_cmd_utf8character, &ttyctx);
1.1 nicm 1039: }
1040: return;
1041: }
1042:
1.89 nicm 1043: /* Initialise the redraw context. */
1.87 nicm 1044: screen_write_initctx(ctx, &ttyctx);
1.55 nicm 1045:
1.6 nicm 1046: /* If in insert mode, make space for the cells. */
1.92 nicm 1047: if ((s->mode & MODE_INSERT) && s->cx <= sx - width) {
1048: xx = sx - s->cx - width;
1.6 nicm 1049: grid_move_cells(s->grid, s->cx + width, s->cx, s->cy, xx);
1050: insert = 1;
1.64 nicm 1051: } else
1052: insert = 0;
1.89 nicm 1053: skip = !insert;
1.6 nicm 1054:
1.20 nicm 1055: /* Check this will fit on the current line and wrap if not. */
1.92 nicm 1056: if ((s->mode & MODE_WRAP) && s->cx > sx - width) {
1057: screen_write_flush(ctx);
1058: screen_write_save_last(ctx, &ttyctx);
1.34 nicm 1059: screen_write_linefeed(ctx, 1);
1.30 nicm 1060: s->cx = 0; /* carriage return */
1.89 nicm 1061: skip = 0;
1.92 nicm 1062: wrapped = 1;
1.1 nicm 1063: }
1064:
1.64 nicm 1065: /* Sanity check cursor position. */
1.92 nicm 1066: if (s->cx > sx - width || s->cy > sy - 1)
1.1 nicm 1067: return;
1068:
1069: /* Handle overwriting of UTF-8 characters. */
1.92 nicm 1070: gl = &s->grid->linedata[s->grid->hsize + s->cy];
1071: if (gl->flags & GRID_LINE_EXTENDED) {
1072: grid_view_get_cell(gd, s->cx, s->cy, &now_gc);
1073: if (screen_write_overwrite(ctx, &now_gc, width))
1074: skip = 0;
1075: }
1.1 nicm 1076:
1077: /*
1078: * If the new character is UTF-8 wide, fill in padding cells. Have
1079: * already ensured there is enough room.
1080: */
1.89 nicm 1081: for (xx = s->cx + 1; xx < s->cx + width; xx++) {
1.88 nicm 1082: grid_view_set_cell(gd, xx, s->cy, &screen_write_pad_cell);
1.89 nicm 1083: skip = 0;
1084: }
1085:
1086: /* If no change, do not draw. */
1.92 nicm 1087: if (skip) {
1088: if (s->cx >= gl->cellsize)
1089: skip = grid_cells_equal(gc, &grid_default_cell);
1090: else {
1091: gce = &gl->celldata[s->cx];
1092: if (gce->flags & GRID_FLAG_EXTENDED)
1093: skip = 0;
1.95 nicm 1094: else if (gc->flags != gce->flags)
1.92 nicm 1095: skip = 0;
1096: else if (gc->attr != gce->data.attr)
1097: skip = 0;
1098: else if (gc->fg != gce->data.fg)
1099: skip = 0;
1100: else if (gc->bg != gce->data.bg)
1101: skip = 0;
1.95 nicm 1102: else if (gc->data.width != 1)
1103: skip = 0;
1104: else if (gce->data.data != gc->data.data[0])
1.92 nicm 1105: skip = 0;
1106: }
1107: }
1.1 nicm 1108:
1.90 nicm 1109: /* Update the selection the flag and set the cell. */
1110: selected = screen_check_selection(s, s->cx, s->cy);
1111: if (selected && ~gc->flags & GRID_FLAG_SELECTED) {
1112: skip = 0;
1113: memcpy(&tmp_gc, gc, sizeof tmp_gc);
1114: tmp_gc.flags |= GRID_FLAG_SELECTED;
1115: grid_view_set_cell(gd, s->cx, s->cy, &tmp_gc);
1116: } else if (!selected && gc->flags & GRID_FLAG_SELECTED) {
1117: skip = 0;
1118: memcpy(&tmp_gc, gc, sizeof tmp_gc);
1119: tmp_gc.flags &= ~GRID_FLAG_SELECTED;
1120: grid_view_set_cell(gd, s->cx, s->cy, &tmp_gc);
1121: } else if (!skip)
1.89 nicm 1122: grid_view_set_cell(gd, s->cx, s->cy, gc);
1.1 nicm 1123:
1.64 nicm 1124: /*
1125: * Move the cursor. If not wrapping, stick at the last character and
1126: * replace it.
1127: */
1.65 nicm 1128: last = !(s->mode & MODE_WRAP);
1.92 nicm 1129: if (s->cx <= sx - last - width)
1.64 nicm 1130: s->cx += width;
1131: else
1.92 nicm 1132: s->cx = sx - last;
1.1 nicm 1133:
1.89 nicm 1134: /* Create space for character in insert mode. */
1.17 nicm 1135: if (insert) {
1.92 nicm 1136: if (!wrapped)
1137: screen_write_flush(ctx);
1.17 nicm 1138: ttyctx.num = width;
1139: tty_write(tty_cmd_insertcharacter, &ttyctx);
1140: }
1.89 nicm 1141:
1142: /* Write to the screen. */
1143: if (selected) {
1.33 nicm 1144: memcpy(&tmp_gc, &s->sel.cell, sizeof tmp_gc);
1.77 nicm 1145: utf8_copy(&tmp_gc.data, &gc->data);
1.70 nicm 1146: tmp_gc.attr = tmp_gc.attr & ~GRID_ATTR_CHARSET;
1147: tmp_gc.attr |= gc->attr & GRID_ATTR_CHARSET;
1.85 nicm 1148: tmp_gc.flags = gc->flags;
1.92 nicm 1149: screen_write_flush(ctx);
1.33 nicm 1150: ttyctx.cell = &tmp_gc;
1.16 nicm 1151: tty_write(tty_cmd_cell, &ttyctx);
1.92 nicm 1152: ctx->written++;
1.89 nicm 1153: } else if (!skip) {
1.92 nicm 1154: if (wrapped) {
1155: ttyctx.cell = gc;
1156: tty_write(tty_cmd_cell, &ttyctx);
1157: ctx->written++;
1158: } else {
1159: /*
1160: * If wp is NULL, we are not updating the terminal and
1161: * don't care about actually writing the cells
1162: * (tty_write will just return). So don't even bother
1163: * allocating the dirty array.
1164: */
1165: if (ctx->wp != NULL && s->dirty == NULL) {
1166: log_debug("%s: allocating %u bits", __func__,
1167: s->dirtysize);
1168: s->dirty = bit_alloc(s->dirtysize);
1169: }
1170: if (s->dirty != NULL) {
1171: bit_set(s->dirty, screen_dirty_bit(s,
1172: ttyctx.ocx, ttyctx.ocy));
1173: ctx->dirty++;
1174: }
1175: }
1176: } else
1177: ctx->skipped++;
1.35 nicm 1178: }
1179:
1180: /* Combine a UTF-8 zero-width character onto the previous. */
1.87 nicm 1181: static int
1.60 nicm 1182: screen_write_combine(struct screen_write_ctx *ctx, const struct utf8_data *ud)
1.35 nicm 1183: {
1184: struct screen *s = ctx->s;
1185: struct grid *gd = s->grid;
1.77 nicm 1186: struct grid_cell gc;
1.35 nicm 1187:
1188: /* Can't combine if at 0. */
1189: if (s->cx == 0)
1190: return (-1);
1191:
1.60 nicm 1192: /* Empty data is out. */
1193: if (ud->size == 0)
1.37 nicm 1194: fatalx("UTF-8 data empty");
1195:
1.60 nicm 1196: /* Retrieve the previous cell. */
1.77 nicm 1197: grid_view_get_cell(gd, s->cx - 1, s->cy, &gc);
1.35 nicm 1198:
1.60 nicm 1199: /* Check there is enough space. */
1.77 nicm 1200: if (gc.data.size + ud->size > sizeof gc.data.data)
1.60 nicm 1201: return (-1);
1.35 nicm 1202:
1.77 nicm 1203: /* Append the data. */
1204: memcpy(gc.data.data + gc.data.size, ud->data, ud->size);
1205: gc.data.size += ud->size;
1206:
1207: /* Set the new cell. */
1208: grid_view_set_cell(gd, s->cx - 1, s->cy, &gc);
1.35 nicm 1209:
1210: return (0);
1.1 nicm 1211: }
1212:
1213: /*
1214: * UTF-8 wide characters are a bit of an annoyance. They take up more than one
1215: * cell on the screen, so following cells must not be drawn by marking them as
1216: * padding.
1217: *
1218: * So far, so good. The problem is, when overwriting a padding cell, or a UTF-8
1219: * character, it is necessary to also overwrite any other cells which covered
1220: * by the same character.
1221: */
1.89 nicm 1222: static int
1223: screen_write_overwrite(struct screen_write_ctx *ctx, struct grid_cell *gc,
1224: u_int width)
1.1 nicm 1225: {
1226: struct screen *s = ctx->s;
1227: struct grid *gd = s->grid;
1.89 nicm 1228: struct grid_cell tmp_gc;
1.1 nicm 1229: u_int xx;
1.89 nicm 1230: int done = 0;
1.1 nicm 1231:
1.89 nicm 1232: if (gc->flags & GRID_FLAG_PADDING) {
1.1 nicm 1233: /*
1234: * A padding cell, so clear any following and leading padding
1235: * cells back to the character. Don't overwrite the current
1236: * cell as that happens later anyway.
1237: */
1238: xx = s->cx + 1;
1239: while (--xx > 0) {
1.89 nicm 1240: grid_view_get_cell(gd, xx, s->cy, &tmp_gc);
1241: if (~tmp_gc.flags & GRID_FLAG_PADDING)
1.1 nicm 1242: break;
1243: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
1244: }
1245:
1246: /* Overwrite the character at the start of this padding. */
1247: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
1.89 nicm 1248: done = 1;
1.43 nicm 1249: }
1.1 nicm 1250:
1.43 nicm 1251: /*
1.95 nicm 1252: * Overwrite any padding cells that belong to any UTF-8 characters
1253: * we'll be overwriting with the current character.
1.43 nicm 1254: */
1.95 nicm 1255: if (width != 1 ||
1256: gc->data.width != 1 ||
1257: gc->flags & GRID_FLAG_PADDING) {
1.89 nicm 1258: xx = s->cx + width - 1;
1259: while (++xx < screen_size_x(s)) {
1260: grid_view_get_cell(gd, xx, s->cy, &tmp_gc);
1261: if (~tmp_gc.flags & GRID_FLAG_PADDING)
1262: break;
1263: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
1264: done = 1;
1265: }
1.1 nicm 1266: }
1.89 nicm 1267:
1268: return (done);
1.50 nicm 1269: }
1270:
1271: void
1272: screen_write_setselection(struct screen_write_ctx *ctx, u_char *str, u_int len)
1273: {
1274: struct tty_ctx ttyctx;
1275:
1.87 nicm 1276: screen_write_initctx(ctx, &ttyctx);
1.50 nicm 1277: ttyctx.ptr = str;
1278: ttyctx.num = len;
1279:
1280: tty_write(tty_cmd_setselection, &ttyctx);
1.47 nicm 1281: }
1282:
1283: void
1284: screen_write_rawstring(struct screen_write_ctx *ctx, u_char *str, u_int len)
1285: {
1.87 nicm 1286: struct tty_ctx ttyctx;
1.47 nicm 1287:
1.87 nicm 1288: screen_write_initctx(ctx, &ttyctx);
1.47 nicm 1289: ttyctx.ptr = str;
1290: ttyctx.num = len;
1291:
1292: tty_write(tty_cmd_rawstring, &ttyctx);
1.1 nicm 1293: }
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