Annotation of src/usr.bin/tmux/screen-write.c, Revision 1.98
1.98 ! nicm 1: /* $OpenBSD: screen-write.c,v 1.97 2016/10/12 13:24:07 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;
1.98 ! nicm 106: log_debug("%s: dirty %u", __func__, ctx->dirty);
1.92 nicm 107:
108: cx = s->cx;
109: cy = s->cy;
110:
111: offset = 0;
112: for (y = 0; y < screen_size_y(s); y++) {
113: for (x = 0; x < screen_size_x(s); x++) {
114: offset++;
115: if (!bit_test(s->dirty, offset - 1))
116: continue;
117: bit_clear(s->dirty, offset - 1);
118:
119: screen_write_cursormove(ctx, x, y);
120: grid_view_get_cell(s->grid, x, y, &gc);
121:
122: screen_write_initctx(ctx, &ttyctx);
123: ttyctx.cell = &gc;
124: tty_write(tty_cmd_cell, &ttyctx);
125: ctx->written++;
126:
127: if (++dirty == ctx->dirty)
128: break;
129: }
130: if (dirty == ctx->dirty)
131: break;
132: }
133:
134: s->cx = cx;
135: s->cy = cy;
1.52 nicm 136: }
137:
138: /* Reset screen state. */
139: void
140: screen_write_reset(struct screen_write_ctx *ctx)
141: {
1.61 nicm 142: struct screen *s = ctx->s;
1.52 nicm 143:
1.61 nicm 144: screen_reset_tabs(s);
145: screen_write_scrollregion(ctx, 0, screen_size_y(s) - 1);
1.63 nicm 146:
1.67 nicm 147: s->mode &= ~(MODE_INSERT|MODE_KCURSOR|MODE_KKEYPAD|MODE_FOCUSON);
1.82 nicm 148: s->mode &= ~(ALL_MOUSE_MODES|MODE_MOUSE_UTF8|MODE_MOUSE_SGR);
1.52 nicm 149:
150: screen_write_clearscreen(ctx);
151: screen_write_cursormove(ctx, 0, 0);
1.1 nicm 152: }
153:
154: /* Write character. */
155: void
1.86 nicm 156: screen_write_putc(struct screen_write_ctx *ctx, const struct grid_cell *gcp,
1.69 nicm 157: u_char ch)
1.1 nicm 158: {
1.86 nicm 159: struct grid_cell gc;
160:
161: memcpy(&gc, gcp, sizeof gc);
162:
163: utf8_set(&gc.data, ch);
164: screen_write_cell(ctx, &gc);
1.1 nicm 165: }
166:
1.24 nicm 167: /* Calculate string length, with embedded formatting. */
1.71 nicm 168: size_t
1.75 nicm 169: screen_write_cstrlen(const char *fmt, ...)
1.24 nicm 170: {
171: va_list ap;
172: char *msg, *msg2, *ptr, *ptr2;
173: size_t size;
174:
175: va_start(ap, fmt);
176: xvasprintf(&msg, fmt, ap);
177: va_end(ap);
178: msg2 = xmalloc(strlen(msg) + 1);
179:
180: ptr = msg;
181: ptr2 = msg2;
182: while (*ptr != '\0') {
183: if (ptr[0] == '#' && ptr[1] == '[') {
184: while (*ptr != ']' && *ptr != '\0')
185: ptr++;
186: if (*ptr == ']')
187: ptr++;
188: continue;
189: }
190: *ptr2++ = *ptr++;
191: }
192: *ptr2 = '\0';
193:
1.75 nicm 194: size = screen_write_strlen("%s", msg2);
1.24 nicm 195:
1.56 nicm 196: free(msg);
197: free(msg2);
1.24 nicm 198:
199: return (size);
200: }
201:
1.2 nicm 202: /* Calculate string length. */
1.71 nicm 203: size_t
1.75 nicm 204: screen_write_strlen(const char *fmt, ...)
1.2 nicm 205: {
1.36 nicm 206: va_list ap;
207: char *msg;
1.76 nicm 208: struct utf8_data ud;
1.36 nicm 209: u_char *ptr;
210: size_t left, size = 0;
1.79 nicm 211: enum utf8_state more;
1.2 nicm 212:
213: va_start(ap, fmt);
214: xvasprintf(&msg, fmt, ap);
215: va_end(ap);
216:
217: ptr = msg;
218: while (*ptr != '\0') {
1.79 nicm 219: if (*ptr > 0x7f && utf8_open(&ud, *ptr) == UTF8_MORE) {
1.36 nicm 220: ptr++;
1.2 nicm 221:
222: left = strlen(ptr);
1.77 nicm 223: if (left < (size_t)ud.size - 1)
1.36 nicm 224: break;
1.79 nicm 225: while ((more = utf8_append(&ud, *ptr)) == UTF8_MORE)
1.2 nicm 226: ptr++;
1.36 nicm 227: ptr++;
228:
1.79 nicm 229: if (more == UTF8_DONE)
1.78 nicm 230: size += ud.width;
1.2 nicm 231: } else {
1.75 nicm 232: if (*ptr > 0x1f && *ptr < 0x7f)
233: size++;
1.2 nicm 234: ptr++;
235: }
1.7 ray 236: }
1.2 nicm 237:
1.56 nicm 238: free(msg);
1.2 nicm 239: return (size);
240: }
241:
1.3 nicm 242: /* Write simple string (no UTF-8 or maximum length). */
1.71 nicm 243: void
1.86 nicm 244: screen_write_puts(struct screen_write_ctx *ctx, const struct grid_cell *gcp,
1.71 nicm 245: const char *fmt, ...)
1.1 nicm 246: {
247: va_list ap;
248:
249: va_start(ap, fmt);
1.86 nicm 250: screen_write_vnputs(ctx, -1, gcp, fmt, ap);
1.2 nicm 251: va_end(ap);
252: }
253:
254: /* Write string with length limit (-1 for unlimited). */
1.71 nicm 255: void
256: screen_write_nputs(struct screen_write_ctx *ctx, ssize_t maxlen,
1.86 nicm 257: const struct grid_cell *gcp, const char *fmt, ...)
1.2 nicm 258: {
259: va_list ap;
260:
261: va_start(ap, fmt);
1.86 nicm 262: screen_write_vnputs(ctx, maxlen, gcp, fmt, ap);
1.2 nicm 263: va_end(ap);
264: }
265:
266: void
1.3 nicm 267: screen_write_vnputs(struct screen_write_ctx *ctx, ssize_t maxlen,
1.86 nicm 268: const struct grid_cell *gcp, const char *fmt, va_list ap)
1.2 nicm 269: {
1.86 nicm 270: struct grid_cell gc;
271: struct utf8_data *ud = &gc.data;
1.36 nicm 272: char *msg;
273: u_char *ptr;
274: size_t left, size = 0;
1.79 nicm 275: enum utf8_state more;
1.2 nicm 276:
1.86 nicm 277: memcpy(&gc, gcp, sizeof gc);
1.1 nicm 278: xvasprintf(&msg, fmt, ap);
279:
1.2 nicm 280: ptr = msg;
281: while (*ptr != '\0') {
1.86 nicm 282: if (*ptr > 0x7f && utf8_open(ud, *ptr) == UTF8_MORE) {
1.36 nicm 283: ptr++;
1.2 nicm 284:
285: left = strlen(ptr);
1.86 nicm 286: if (left < (size_t)ud->size - 1)
1.36 nicm 287: break;
1.86 nicm 288: while ((more = utf8_append(ud, *ptr)) == UTF8_MORE)
1.2 nicm 289: ptr++;
1.36 nicm 290: ptr++;
1.7 ray 291:
1.86 nicm 292: if (more != UTF8_DONE)
293: continue;
294: if (maxlen > 0 && size + ud->width > (size_t)maxlen) {
295: while (size < (size_t)maxlen) {
296: screen_write_putc(ctx, &gc, ' ');
297: size++;
1.2 nicm 298: }
1.86 nicm 299: break;
1.2 nicm 300: }
1.86 nicm 301: size += ud->width;
302: screen_write_cell(ctx, &gc);
1.2 nicm 303: } else {
1.86 nicm 304: if (maxlen > 0 && size + 1 > (size_t)maxlen)
1.2 nicm 305: break;
306:
1.57 nicm 307: if (*ptr == '\001')
1.86 nicm 308: gc.attr ^= GRID_ATTR_CHARSET;
1.75 nicm 309: else if (*ptr > 0x1f && *ptr < 0x7f) {
1.57 nicm 310: size++;
1.86 nicm 311: screen_write_putc(ctx, &gc, *ptr);
1.57 nicm 312: }
1.2 nicm 313: ptr++;
314: }
315: }
1.1 nicm 316:
1.56 nicm 317: free(msg);
1.24 nicm 318: }
319:
320: /* Write string, similar to nputs, but with embedded formatting (#[]). */
1.71 nicm 321: void
1.75 nicm 322: screen_write_cnputs(struct screen_write_ctx *ctx, ssize_t maxlen,
1.86 nicm 323: const struct grid_cell *gcp, const char *fmt, ...)
1.24 nicm 324: {
1.86 nicm 325: struct grid_cell gc;
326: struct utf8_data *ud = &gc.data;
1.24 nicm 327: va_list ap;
328: char *msg;
1.36 nicm 329: u_char *ptr, *last;
1.24 nicm 330: size_t left, size = 0;
1.79 nicm 331: enum utf8_state more;
1.24 nicm 332:
1.86 nicm 333: memcpy(&gc, gcp, sizeof gc);
334:
1.24 nicm 335: va_start(ap, fmt);
336: xvasprintf(&msg, fmt, ap);
337: va_end(ap);
338:
339: ptr = msg;
340: while (*ptr != '\0') {
341: if (ptr[0] == '#' && ptr[1] == '[') {
342: ptr += 2;
343: last = ptr + strcspn(ptr, "]");
344: if (*last == '\0') {
345: /* No ]. Not much point in doing anything. */
346: break;
347: }
348: *last = '\0';
349:
1.86 nicm 350: style_parse(gcp, &gc, ptr);
1.24 nicm 351: ptr = last + 1;
352: continue;
353: }
354:
1.86 nicm 355: if (*ptr > 0x7f && utf8_open(ud, *ptr) == UTF8_MORE) {
1.36 nicm 356: ptr++;
1.24 nicm 357:
358: left = strlen(ptr);
1.86 nicm 359: if (left < (size_t)ud->size - 1)
1.36 nicm 360: break;
1.86 nicm 361: while ((more = utf8_append(ud, *ptr)) == UTF8_MORE)
1.24 nicm 362: ptr++;
1.36 nicm 363: ptr++;
1.24 nicm 364:
1.86 nicm 365: if (more != UTF8_DONE)
366: continue;
367: if (maxlen > 0 && size + ud->width > (size_t)maxlen) {
368: while (size < (size_t)maxlen) {
369: screen_write_putc(ctx, &gc, ' ');
370: size++;
1.24 nicm 371: }
1.86 nicm 372: break;
1.24 nicm 373: }
1.86 nicm 374: size += ud->width;
375: screen_write_cell(ctx, &gc);
1.24 nicm 376: } else {
1.86 nicm 377: if (maxlen > 0 && size + 1 > (size_t)maxlen)
1.24 nicm 378: break;
379:
1.75 nicm 380: if (*ptr > 0x1f && *ptr < 0x7f) {
381: size++;
1.86 nicm 382: screen_write_putc(ctx, &gc, *ptr);
1.75 nicm 383: }
1.24 nicm 384: ptr++;
385: }
386: }
387:
1.56 nicm 388: free(msg);
1.1 nicm 389: }
390:
391: /* Copy from another screen. */
392: void
1.95 nicm 393: screen_write_copy(struct screen_write_ctx *ctx, struct screen *src, u_int px,
394: u_int py, u_int nx, u_int ny)
1.1 nicm 395: {
396: struct screen *s = ctx->s;
397: struct grid *gd = src->grid;
1.77 nicm 398: struct grid_cell gc;
1.96 nicm 399: u_int xx, yy, cx, cy;
1.1 nicm 400:
401: cx = s->cx;
402: cy = s->cy;
1.96 nicm 403:
1.1 nicm 404: for (yy = py; yy < py + ny; yy++) {
1.96 nicm 405: for (xx = px; xx < px + nx; xx++) {
406: grid_get_cell(gd, xx, yy, &gc);
407: screen_write_cell(ctx, &gc);
408: }
409:
1.1 nicm 410: cy++;
411: screen_write_cursormove(ctx, cx, cy);
412: }
413: }
414:
1.17 nicm 415: /* Set up context for TTY command. */
1.87 nicm 416: static void
417: screen_write_initctx(struct screen_write_ctx *ctx, struct tty_ctx *ttyctx)
1.1 nicm 418: {
1.87 nicm 419: struct screen *s = ctx->s;
1.1 nicm 420:
1.17 nicm 421: ttyctx->wp = ctx->wp;
1.1 nicm 422:
1.17 nicm 423: ttyctx->ocx = s->cx;
424: ttyctx->ocy = s->cy;
425:
426: ttyctx->orlower = s->rlower;
427: ttyctx->orupper = s->rupper;
1.87 nicm 428: }
1.31 nicm 429:
1.87 nicm 430: /* Save last cell on screen. */
431: static void
432: screen_write_save_last(struct screen_write_ctx *ctx, struct tty_ctx *ttyctx)
433: {
434: struct screen *s = ctx->s;
435: struct grid *gd = s->grid;
436: struct grid_cell gc;
437: u_int xx;
1.31 nicm 438:
1.77 nicm 439: memcpy(&gc, &grid_default_cell, sizeof gc);
1.38 nicm 440: for (xx = 1; xx <= screen_size_x(s); xx++) {
1.77 nicm 441: grid_view_get_cell(gd, screen_size_x(s) - xx, s->cy, &gc);
442: if (~gc.flags & GRID_FLAG_PADDING)
1.31 nicm 443: break;
444: }
1.77 nicm 445: memcpy(&ttyctx->last_cell, &gc, sizeof ttyctx->last_cell);
1.1 nicm 446: }
447:
1.61 nicm 448: /* Set a mode. */
449: void
450: screen_write_mode_set(struct screen_write_ctx *ctx, int mode)
451: {
452: struct screen *s = ctx->s;
453:
454: s->mode |= mode;
455: }
456:
457: /* Clear a mode. */
458: void
459: screen_write_mode_clear(struct screen_write_ctx *ctx, int mode)
460: {
461: struct screen *s = ctx->s;
462:
463: s->mode &= ~mode;
464: }
465:
1.1 nicm 466: /* Cursor up by ny. */
467: void
468: screen_write_cursorup(struct screen_write_ctx *ctx, u_int ny)
469: {
470: struct screen *s = ctx->s;
471:
472: if (ny == 0)
473: ny = 1;
474:
1.12 nicm 475: if (s->cy < s->rupper) {
476: /* Above region. */
477: if (ny > s->cy)
478: ny = s->cy;
479: } else {
480: /* Below region. */
481: if (ny > s->cy - s->rupper)
482: ny = s->cy - s->rupper;
483: }
1.66 nicm 484: if (s->cx == screen_size_x(s))
485: s->cx--;
1.1 nicm 486: if (ny == 0)
487: return;
488:
489: s->cy -= ny;
490: }
491:
492: /* Cursor down by ny. */
493: void
494: screen_write_cursordown(struct screen_write_ctx *ctx, u_int ny)
495: {
496: struct screen *s = ctx->s;
497:
498: if (ny == 0)
499: ny = 1;
500:
1.12 nicm 501: if (s->cy > s->rlower) {
502: /* Below region. */
503: if (ny > screen_size_y(s) - 1 - s->cy)
504: ny = screen_size_y(s) - 1 - s->cy;
505: } else {
506: /* Above region. */
507: if (ny > s->rlower - s->cy)
508: ny = s->rlower - s->cy;
509: }
1.66 nicm 510: if (s->cx == screen_size_x(s))
511: s->cx--;
1.1 nicm 512: if (ny == 0)
513: return;
514:
515: s->cy += ny;
516: }
517:
518: /* Cursor right by nx. */
519: void
520: screen_write_cursorright(struct screen_write_ctx *ctx, u_int nx)
521: {
522: struct screen *s = ctx->s;
523:
524: if (nx == 0)
525: nx = 1;
526:
527: if (nx > screen_size_x(s) - 1 - s->cx)
528: nx = screen_size_x(s) - 1 - s->cx;
529: if (nx == 0)
530: return;
531:
532: s->cx += nx;
533: }
534:
535: /* Cursor left by nx. */
536: void
537: screen_write_cursorleft(struct screen_write_ctx *ctx, u_int nx)
538: {
539: struct screen *s = ctx->s;
540:
541: if (nx == 0)
542: nx = 1;
543:
544: if (nx > s->cx)
545: nx = s->cx;
546: if (nx == 0)
547: return;
548:
549: s->cx -= nx;
1.5 nicm 550: }
551:
1.29 nicm 552: /* Backspace; cursor left unless at start of wrapped line when can move up. */
553: void
554: screen_write_backspace(struct screen_write_ctx *ctx)
555: {
556: struct screen *s = ctx->s;
557: struct grid_line *gl;
558:
559: if (s->cx == 0) {
560: if (s->cy == 0)
561: return;
562: gl = &s->grid->linedata[s->grid->hsize + s->cy - 1];
563: if (gl->flags & GRID_LINE_WRAPPED) {
564: s->cy--;
565: s->cx = screen_size_x(s) - 1;
566: }
567: } else
568: s->cx--;
569: }
570:
1.5 nicm 571: /* VT100 alignment test. */
572: void
573: screen_write_alignmenttest(struct screen_write_ctx *ctx)
574: {
575: struct screen *s = ctx->s;
1.17 nicm 576: struct tty_ctx ttyctx;
1.5 nicm 577: struct grid_cell gc;
578: u_int xx, yy;
1.92 nicm 579: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.5 nicm 580:
1.87 nicm 581: screen_write_initctx(ctx, &ttyctx);
1.17 nicm 582:
1.92 nicm 583: screen_dirty_clear(s, 0, 0, sx - 1, sy - 1);
584:
1.5 nicm 585: memcpy(&gc, &grid_default_cell, sizeof gc);
1.77 nicm 586: utf8_set(&gc.data, 'E');
1.7 ray 587:
1.5 nicm 588: for (yy = 0; yy < screen_size_y(s); yy++) {
589: for (xx = 0; xx < screen_size_x(s); xx++)
590: grid_view_set_cell(s->grid, xx, yy, &gc);
591: }
1.7 ray 592:
1.5 nicm 593: s->cx = 0;
594: s->cy = 0;
595:
596: s->rupper = 0;
597: s->rlower = screen_size_y(s) - 1;
598:
1.17 nicm 599: tty_write(tty_cmd_alignmenttest, &ttyctx);
1.1 nicm 600: }
601:
602: /* Insert nx characters. */
603: void
604: screen_write_insertcharacter(struct screen_write_ctx *ctx, u_int nx)
605: {
606: struct screen *s = ctx->s;
1.17 nicm 607: struct tty_ctx ttyctx;
1.1 nicm 608:
609: if (nx == 0)
610: nx = 1;
611:
1.9 nicm 612: if (nx > screen_size_x(s) - s->cx)
613: nx = screen_size_x(s) - s->cx;
1.1 nicm 614: if (nx == 0)
615: return;
616:
1.92 nicm 617: screen_write_flush(ctx);
1.87 nicm 618: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 619:
620: if (s->cx <= screen_size_x(s) - 1)
621: grid_view_insert_cells(s->grid, s->cx, s->cy, nx);
622:
1.17 nicm 623: ttyctx.num = nx;
624: tty_write(tty_cmd_insertcharacter, &ttyctx);
1.1 nicm 625: }
626:
627: /* Delete nx characters. */
628: void
629: screen_write_deletecharacter(struct screen_write_ctx *ctx, u_int nx)
630: {
631: struct screen *s = ctx->s;
1.17 nicm 632: struct tty_ctx ttyctx;
1.1 nicm 633:
634: if (nx == 0)
635: nx = 1;
636:
1.9 nicm 637: if (nx > screen_size_x(s) - s->cx)
638: nx = screen_size_x(s) - s->cx;
1.1 nicm 639: if (nx == 0)
640: return;
641:
1.92 nicm 642: screen_write_flush(ctx);
1.87 nicm 643: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 644:
645: if (s->cx <= screen_size_x(s) - 1)
646: grid_view_delete_cells(s->grid, s->cx, s->cy, nx);
647:
1.17 nicm 648: ttyctx.num = nx;
649: tty_write(tty_cmd_deletecharacter, &ttyctx);
1.59 nicm 650: }
651:
652: /* Clear nx characters. */
653: void
654: screen_write_clearcharacter(struct screen_write_ctx *ctx, u_int nx)
655: {
656: struct screen *s = ctx->s;
657: struct tty_ctx ttyctx;
658:
659: if (nx == 0)
660: nx = 1;
661:
662: if (nx > screen_size_x(s) - s->cx)
663: nx = screen_size_x(s) - s->cx;
664: if (nx == 0)
665: return;
666:
1.87 nicm 667: screen_write_initctx(ctx, &ttyctx);
1.59 nicm 668:
1.92 nicm 669: if (s->cx <= screen_size_x(s) - 1) {
670: screen_dirty_clear(s, s->cx, s->cy, s->cx + nx - 1, s->cy);
1.59 nicm 671: grid_view_clear(s->grid, s->cx, s->cy, nx, 1);
1.92 nicm 672: } else
673: return;
1.59 nicm 674:
675: ttyctx.num = nx;
676: tty_write(tty_cmd_clearcharacter, &ttyctx);
1.1 nicm 677: }
678:
679: /* Insert ny lines. */
680: void
681: screen_write_insertline(struct screen_write_ctx *ctx, u_int ny)
682: {
683: struct screen *s = ctx->s;
1.17 nicm 684: struct tty_ctx ttyctx;
1.1 nicm 685:
686: if (ny == 0)
687: ny = 1;
688:
1.11 nicm 689: if (s->cy < s->rupper || s->cy > s->rlower) {
690: if (ny > screen_size_y(s) - s->cy)
691: ny = screen_size_y(s) - s->cy;
692: if (ny == 0)
693: return;
694:
1.92 nicm 695: screen_write_flush(ctx);
1.87 nicm 696: screen_write_initctx(ctx, &ttyctx);
1.11 nicm 697:
698: grid_view_insert_lines(s->grid, s->cy, ny);
699:
1.17 nicm 700: ttyctx.num = ny;
701: tty_write(tty_cmd_insertline, &ttyctx);
1.11 nicm 702: return;
703: }
704:
705: if (ny > s->rlower + 1 - s->cy)
706: ny = s->rlower + 1 - s->cy;
1.1 nicm 707: if (ny == 0)
708: return;
1.41 nicm 709:
1.92 nicm 710: screen_write_flush(ctx);
1.87 nicm 711: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 712:
713: if (s->cy < s->rupper || s->cy > s->rlower)
714: grid_view_insert_lines(s->grid, s->cy, ny);
1.10 nicm 715: else
716: grid_view_insert_lines_region(s->grid, s->rlower, s->cy, ny);
1.1 nicm 717:
1.17 nicm 718: ttyctx.num = ny;
719: tty_write(tty_cmd_insertline, &ttyctx);
1.1 nicm 720: }
721:
722: /* Delete ny lines. */
723: void
724: screen_write_deleteline(struct screen_write_ctx *ctx, u_int ny)
725: {
726: struct screen *s = ctx->s;
1.17 nicm 727: struct tty_ctx ttyctx;
1.1 nicm 728:
729: if (ny == 0)
730: ny = 1;
731:
1.11 nicm 732: if (s->cy < s->rupper || s->cy > s->rlower) {
733: if (ny > screen_size_y(s) - s->cy)
734: ny = screen_size_y(s) - s->cy;
735: if (ny == 0)
736: return;
737:
1.92 nicm 738: screen_write_flush(ctx);
1.87 nicm 739: screen_write_initctx(ctx, &ttyctx);
1.11 nicm 740:
741: grid_view_delete_lines(s->grid, s->cy, ny);
742:
1.17 nicm 743: ttyctx.num = ny;
744: tty_write(tty_cmd_deleteline, &ttyctx);
1.11 nicm 745: return;
746: }
1.41 nicm 747:
1.11 nicm 748: if (ny > s->rlower + 1 - s->cy)
749: ny = s->rlower + 1 - s->cy;
1.1 nicm 750: if (ny == 0)
751: return;
752:
1.92 nicm 753: screen_write_flush(ctx);
1.87 nicm 754: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 755:
756: if (s->cy < s->rupper || s->cy > s->rlower)
757: grid_view_delete_lines(s->grid, s->cy, ny);
1.10 nicm 758: else
759: grid_view_delete_lines_region(s->grid, s->rlower, s->cy, ny);
1.1 nicm 760:
1.17 nicm 761: ttyctx.num = ny;
762: tty_write(tty_cmd_deleteline, &ttyctx);
1.1 nicm 763: }
764:
765: /* Clear line at cursor. */
766: void
767: screen_write_clearline(struct screen_write_ctx *ctx)
768: {
1.92 nicm 769: struct screen *s = ctx->s;
770: struct grid_line *gl;
771: struct tty_ctx ttyctx;
772: u_int sx = screen_size_x(s);
1.1 nicm 773:
1.87 nicm 774: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 775:
1.92 nicm 776: gl = &s->grid->linedata[s->grid->hsize + s->cy];
777: if (gl->cellsize != 0) {
778: screen_dirty_clear(s, 0, s->cy, sx - 1, s->cy);
779: grid_view_clear(s->grid, 0, s->cy, sx, 1);
780: } else
781: return;
1.1 nicm 782:
1.17 nicm 783: tty_write(tty_cmd_clearline, &ttyctx);
1.1 nicm 784: }
785:
786: /* Clear to end of line from cursor. */
787: void
788: screen_write_clearendofline(struct screen_write_ctx *ctx)
789: {
1.92 nicm 790: struct screen *s = ctx->s;
791: struct grid_line *gl;
792: struct tty_ctx ttyctx;
793: u_int sx = screen_size_x(s);
1.1 nicm 794:
1.87 nicm 795: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 796:
1.92 nicm 797: gl = &s->grid->linedata[s->grid->hsize + s->cy];
798: if (s->cx <= sx - 1 && s->cx < gl->cellsize) {
799: screen_dirty_clear(s, s->cx, s->cy, sx - 1, s->cy);
1.1 nicm 800: grid_view_clear(s->grid, s->cx, s->cy, sx - s->cx, 1);
1.92 nicm 801: } else
802: return;
1.1 nicm 803:
1.41 nicm 804: tty_write(tty_cmd_clearendofline, &ttyctx);
1.1 nicm 805: }
806:
807: /* Clear to start of line from cursor. */
808: void
809: screen_write_clearstartofline(struct screen_write_ctx *ctx)
810: {
811: struct screen *s = ctx->s;
1.17 nicm 812: struct tty_ctx ttyctx;
1.92 nicm 813: u_int sx = screen_size_x(s);
1.1 nicm 814:
1.87 nicm 815: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 816:
1.92 nicm 817: if (s->cx > sx - 1) {
818: screen_dirty_clear(s, 0, s->cy, sx - 1, s->cy);
1.1 nicm 819: grid_view_clear(s->grid, 0, s->cy, sx, 1);
1.92 nicm 820: } else {
821: screen_dirty_clear(s, 0, s->cy, s->cx, s->cy);
1.1 nicm 822: grid_view_clear(s->grid, 0, s->cy, s->cx + 1, 1);
1.92 nicm 823: }
1.1 nicm 824:
1.17 nicm 825: tty_write(tty_cmd_clearstartofline, &ttyctx);
1.1 nicm 826: }
827:
828: /* Move cursor to px,py. */
829: void
830: screen_write_cursormove(struct screen_write_ctx *ctx, u_int px, u_int py)
831: {
832: struct screen *s = ctx->s;
833:
834: if (px > screen_size_x(s) - 1)
835: px = screen_size_x(s) - 1;
836: if (py > screen_size_y(s) - 1)
837: py = screen_size_y(s) - 1;
838:
839: s->cx = px;
840: s->cy = py;
841: }
842:
843: /* Reverse index (up with scroll). */
844: void
845: screen_write_reverseindex(struct screen_write_ctx *ctx)
846: {
847: struct screen *s = ctx->s;
1.17 nicm 848: struct tty_ctx ttyctx;
1.1 nicm 849:
1.87 nicm 850: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 851:
1.92 nicm 852: if (s->cy == s->rupper) {
853: screen_write_flush(ctx);
1.1 nicm 854: grid_view_scroll_region_down(s->grid, s->rupper, s->rlower);
1.92 nicm 855: } else if (s->cy > 0)
1.1 nicm 856: s->cy--;
857:
1.17 nicm 858: tty_write(tty_cmd_reverseindex, &ttyctx);
1.1 nicm 859: }
860:
861: /* Set scroll region. */
862: void
1.83 nicm 863: screen_write_scrollregion(struct screen_write_ctx *ctx, u_int rupper,
864: u_int rlower)
1.1 nicm 865: {
866: struct screen *s = ctx->s;
867:
868: if (rupper > screen_size_y(s) - 1)
869: rupper = screen_size_y(s) - 1;
870: if (rlower > screen_size_y(s) - 1)
871: rlower = screen_size_y(s) - 1;
1.13 nicm 872: if (rupper >= rlower) /* cannot be one line */
1.1 nicm 873: return;
874:
875: /* Cursor moves to top-left. */
876: s->cx = 0;
877: s->cy = 0;
878:
879: s->rupper = rupper;
880: s->rlower = rlower;
881: }
882:
1.34 nicm 883: /* Line feed. */
1.1 nicm 884: void
1.34 nicm 885: screen_write_linefeed(struct screen_write_ctx *ctx, int wrapped)
1.1 nicm 886: {
1.20 nicm 887: struct screen *s = ctx->s;
888: struct grid_line *gl;
1.34 nicm 889: struct tty_ctx ttyctx;
1.92 nicm 890: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.34 nicm 891:
1.87 nicm 892: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 893:
1.20 nicm 894: gl = &s->grid->linedata[s->grid->hsize + s->cy];
895: if (wrapped)
896: gl->flags |= GRID_LINE_WRAPPED;
1.73 nicm 897: else
898: gl->flags &= ~GRID_LINE_WRAPPED;
1.20 nicm 899:
1.92 nicm 900: if (s->cy == s->rlower) {
901: screen_dirty_clear(s, 0, s->rupper, sx - 1, s->rupper);
902: screen_write_flush(ctx);
1.1 nicm 903: grid_view_scroll_region_up(s->grid, s->rupper, s->rlower);
1.92 nicm 904: } else if (s->cy < sy - 1)
1.1 nicm 905: s->cy++;
906:
1.34 nicm 907: ttyctx.num = wrapped;
1.41 nicm 908: tty_write(tty_cmd_linefeed, &ttyctx);
1.1 nicm 909: }
910:
911: /* Carriage return (cursor to start of line). */
912: void
913: screen_write_carriagereturn(struct screen_write_ctx *ctx)
914: {
915: struct screen *s = ctx->s;
916:
917: s->cx = 0;
918: }
919:
920: /* Clear to end of screen from cursor. */
921: void
922: screen_write_clearendofscreen(struct screen_write_ctx *ctx)
923: {
924: struct screen *s = ctx->s;
1.17 nicm 925: struct tty_ctx ttyctx;
1.92 nicm 926: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.1 nicm 927:
1.87 nicm 928: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 929:
1.46 nicm 930: /* Scroll into history if it is enabled and clearing entire screen. */
1.92 nicm 931: if (s->cy == 0 && s->grid->flags & GRID_HISTORY) {
932: screen_dirty_clear(s, 0, 0, sx - 1, sy - 1);
1.46 nicm 933: grid_view_clear_history(s->grid);
1.92 nicm 934: } else {
935: if (s->cx <= sx - 1) {
936: screen_dirty_clear(s, s->cx, s->cy, sx - 1, s->cy);
1.46 nicm 937: grid_view_clear(s->grid, s->cx, s->cy, sx - s->cx, 1);
1.92 nicm 938: }
939: screen_dirty_clear(s, 0, s->cy + 1, sx - 1, sy - 1);
1.46 nicm 940: grid_view_clear(s->grid, 0, s->cy + 1, sx, sy - (s->cy + 1));
941: }
1.1 nicm 942:
1.17 nicm 943: tty_write(tty_cmd_clearendofscreen, &ttyctx);
1.1 nicm 944: }
945:
946: /* Clear to start of screen. */
947: void
948: screen_write_clearstartofscreen(struct screen_write_ctx *ctx)
949: {
950: struct screen *s = ctx->s;
1.17 nicm 951: struct tty_ctx ttyctx;
1.92 nicm 952: u_int sx = screen_size_x(s);
1.1 nicm 953:
1.87 nicm 954: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 955:
1.92 nicm 956: if (s->cy > 0) {
957: screen_dirty_clear(s, 0, 0, sx - 1, s->cy);
1.4 nicm 958: grid_view_clear(s->grid, 0, 0, sx, s->cy);
1.92 nicm 959: }
960: if (s->cx > sx - 1) {
961: screen_dirty_clear(s, 0, s->cy, sx - 1, s->cy);
1.1 nicm 962: grid_view_clear(s->grid, 0, s->cy, sx, 1);
1.92 nicm 963: } else {
964: screen_dirty_clear(s, 0, s->cy, s->cx, s->cy);
1.4 nicm 965: grid_view_clear(s->grid, 0, s->cy, s->cx + 1, 1);
1.92 nicm 966: }
1.1 nicm 967:
1.17 nicm 968: tty_write(tty_cmd_clearstartofscreen, &ttyctx);
1.1 nicm 969: }
970:
971: /* Clear entire screen. */
972: void
973: screen_write_clearscreen(struct screen_write_ctx *ctx)
974: {
975: struct screen *s = ctx->s;
1.17 nicm 976: struct tty_ctx ttyctx;
1.92 nicm 977: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.1 nicm 978:
1.87 nicm 979: screen_write_initctx(ctx, &ttyctx);
1.1 nicm 980:
1.92 nicm 981: screen_dirty_clear(s, 0, 0, sx - 1, sy - 1);
982:
1.46 nicm 983: /* Scroll into history if it is enabled. */
984: if (s->grid->flags & GRID_HISTORY)
985: grid_view_clear_history(s->grid);
1.83 nicm 986: else
987: grid_view_clear(s->grid, 0, 0, sx, sy);
1.1 nicm 988:
1.17 nicm 989: tty_write(tty_cmd_clearscreen, &ttyctx);
1.51 nicm 990: }
991:
992: /* Clear entire history. */
993: void
994: screen_write_clearhistory(struct screen_write_ctx *ctx)
995: {
996: struct screen *s = ctx->s;
997: struct grid *gd = s->grid;
998:
999: grid_move_lines(gd, 0, gd->hsize, gd->sy);
1.93 nicm 1000: gd->hscrolled = gd->hsize = 0;
1.1 nicm 1001: }
1002:
1003: /* Write cell data. */
1004: void
1.60 nicm 1005: screen_write_cell(struct screen_write_ctx *ctx, const struct grid_cell *gc)
1.1 nicm 1006: {
1007: struct screen *s = ctx->s;
1008: struct grid *gd = s->grid;
1.15 nicm 1009: struct tty_ctx ttyctx;
1.64 nicm 1010: u_int width, xx, last;
1.92 nicm 1011: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1012: struct grid_line *gl;
1.89 nicm 1013: struct grid_cell tmp_gc, now_gc;
1.92 nicm 1014: struct grid_cell_entry *gce;
1015: int insert, skip, selected, wrapped = 0;
1016:
1017: ctx->cells++;
1.1 nicm 1018:
1019: /* Ignore padding. */
1020: if (gc->flags & GRID_FLAG_PADDING)
1021: return;
1.77 nicm 1022: width = gc->data.width;
1.1 nicm 1023:
1.32 nicm 1024: /*
1025: * If this is a wide character and there is no room on the screen, for
1026: * the entire character, don't print it.
1027: */
1.92 nicm 1028: if (!(s->mode & MODE_WRAP) && (width > 1 &&
1029: (width > sx || (s->cx != sx && s->cx > sx - width))))
1.32 nicm 1030: return;
1031:
1.35 nicm 1032: /*
1033: * If the width is zero, combine onto the previous character, if
1.41 nicm 1034: * there is space.
1.35 nicm 1035: */
1.1 nicm 1036: if (width == 0) {
1.77 nicm 1037: if (screen_write_combine(ctx, &gc->data) == 0) {
1.87 nicm 1038: screen_write_initctx(ctx, &ttyctx);
1.35 nicm 1039: tty_write(tty_cmd_utf8character, &ttyctx);
1.1 nicm 1040: }
1041: return;
1042: }
1043:
1.89 nicm 1044: /* Initialise the redraw context. */
1.87 nicm 1045: screen_write_initctx(ctx, &ttyctx);
1.55 nicm 1046:
1.6 nicm 1047: /* If in insert mode, make space for the cells. */
1.98 ! nicm 1048: if (s->mode & MODE_INSERT) {
! 1049: if (s->cx <= sx - width) {
! 1050: screen_write_flush(ctx);
! 1051: xx = sx - s->cx - width;
! 1052: grid_view_insert_cells(s->grid, s->cx, s->cy, xx);
! 1053: }
1.6 nicm 1054: insert = 1;
1.64 nicm 1055: } else
1056: insert = 0;
1.89 nicm 1057: skip = !insert;
1.6 nicm 1058:
1.20 nicm 1059: /* Check this will fit on the current line and wrap if not. */
1.92 nicm 1060: if ((s->mode & MODE_WRAP) && s->cx > sx - width) {
1061: screen_write_flush(ctx);
1062: screen_write_save_last(ctx, &ttyctx);
1.34 nicm 1063: screen_write_linefeed(ctx, 1);
1.30 nicm 1064: s->cx = 0; /* carriage return */
1.89 nicm 1065: skip = 0;
1.92 nicm 1066: wrapped = 1;
1.1 nicm 1067: }
1068:
1.64 nicm 1069: /* Sanity check cursor position. */
1.92 nicm 1070: if (s->cx > sx - width || s->cy > sy - 1)
1.1 nicm 1071: return;
1072:
1073: /* Handle overwriting of UTF-8 characters. */
1.92 nicm 1074: gl = &s->grid->linedata[s->grid->hsize + s->cy];
1075: if (gl->flags & GRID_LINE_EXTENDED) {
1076: grid_view_get_cell(gd, s->cx, s->cy, &now_gc);
1077: if (screen_write_overwrite(ctx, &now_gc, width))
1078: skip = 0;
1079: }
1.1 nicm 1080:
1081: /*
1082: * If the new character is UTF-8 wide, fill in padding cells. Have
1083: * already ensured there is enough room.
1084: */
1.89 nicm 1085: for (xx = s->cx + 1; xx < s->cx + width; xx++) {
1.88 nicm 1086: grid_view_set_cell(gd, xx, s->cy, &screen_write_pad_cell);
1.89 nicm 1087: skip = 0;
1088: }
1089:
1090: /* If no change, do not draw. */
1.92 nicm 1091: if (skip) {
1092: if (s->cx >= gl->cellsize)
1093: skip = grid_cells_equal(gc, &grid_default_cell);
1094: else {
1095: gce = &gl->celldata[s->cx];
1096: if (gce->flags & GRID_FLAG_EXTENDED)
1097: skip = 0;
1.95 nicm 1098: else if (gc->flags != gce->flags)
1.92 nicm 1099: skip = 0;
1100: else if (gc->attr != gce->data.attr)
1101: skip = 0;
1102: else if (gc->fg != gce->data.fg)
1103: skip = 0;
1104: else if (gc->bg != gce->data.bg)
1105: skip = 0;
1.95 nicm 1106: else if (gc->data.width != 1)
1107: skip = 0;
1108: else if (gce->data.data != gc->data.data[0])
1.92 nicm 1109: skip = 0;
1110: }
1111: }
1.1 nicm 1112:
1.90 nicm 1113: /* Update the selection the flag and set the cell. */
1114: selected = screen_check_selection(s, s->cx, s->cy);
1115: if (selected && ~gc->flags & GRID_FLAG_SELECTED) {
1116: skip = 0;
1117: memcpy(&tmp_gc, gc, sizeof tmp_gc);
1118: tmp_gc.flags |= GRID_FLAG_SELECTED;
1119: grid_view_set_cell(gd, s->cx, s->cy, &tmp_gc);
1120: } else if (!selected && gc->flags & GRID_FLAG_SELECTED) {
1121: skip = 0;
1122: memcpy(&tmp_gc, gc, sizeof tmp_gc);
1123: tmp_gc.flags &= ~GRID_FLAG_SELECTED;
1124: grid_view_set_cell(gd, s->cx, s->cy, &tmp_gc);
1125: } else if (!skip)
1.89 nicm 1126: grid_view_set_cell(gd, s->cx, s->cy, gc);
1.1 nicm 1127:
1.64 nicm 1128: /*
1129: * Move the cursor. If not wrapping, stick at the last character and
1130: * replace it.
1131: */
1.65 nicm 1132: last = !(s->mode & MODE_WRAP);
1.92 nicm 1133: if (s->cx <= sx - last - width)
1.64 nicm 1134: s->cx += width;
1135: else
1.92 nicm 1136: s->cx = sx - last;
1.1 nicm 1137:
1.89 nicm 1138: /* Create space for character in insert mode. */
1.17 nicm 1139: if (insert) {
1140: ttyctx.num = width;
1141: tty_write(tty_cmd_insertcharacter, &ttyctx);
1142: }
1.89 nicm 1143:
1144: /* Write to the screen. */
1145: if (selected) {
1.92 nicm 1146: screen_write_flush(ctx);
1.97 nicm 1147: screen_select_cell(s, &tmp_gc, gc);
1.33 nicm 1148: ttyctx.cell = &tmp_gc;
1.16 nicm 1149: tty_write(tty_cmd_cell, &ttyctx);
1.92 nicm 1150: ctx->written++;
1.89 nicm 1151: } else if (!skip) {
1.92 nicm 1152: if (wrapped) {
1153: ttyctx.cell = gc;
1154: tty_write(tty_cmd_cell, &ttyctx);
1155: ctx->written++;
1156: } else {
1157: /*
1158: * If wp is NULL, we are not updating the terminal and
1159: * don't care about actually writing the cells
1160: * (tty_write will just return). So don't even bother
1161: * allocating the dirty array.
1162: */
1163: if (ctx->wp != NULL && s->dirty == NULL) {
1164: log_debug("%s: allocating %u bits", __func__,
1165: s->dirtysize);
1166: s->dirty = bit_alloc(s->dirtysize);
1167: }
1168: if (s->dirty != NULL) {
1169: bit_set(s->dirty, screen_dirty_bit(s,
1170: ttyctx.ocx, ttyctx.ocy));
1171: ctx->dirty++;
1172: }
1173: }
1174: } else
1175: ctx->skipped++;
1.35 nicm 1176: }
1177:
1178: /* Combine a UTF-8 zero-width character onto the previous. */
1.87 nicm 1179: static int
1.60 nicm 1180: screen_write_combine(struct screen_write_ctx *ctx, const struct utf8_data *ud)
1.35 nicm 1181: {
1182: struct screen *s = ctx->s;
1183: struct grid *gd = s->grid;
1.77 nicm 1184: struct grid_cell gc;
1.35 nicm 1185:
1186: /* Can't combine if at 0. */
1187: if (s->cx == 0)
1188: return (-1);
1189:
1.60 nicm 1190: /* Empty data is out. */
1191: if (ud->size == 0)
1.37 nicm 1192: fatalx("UTF-8 data empty");
1193:
1.60 nicm 1194: /* Retrieve the previous cell. */
1.77 nicm 1195: grid_view_get_cell(gd, s->cx - 1, s->cy, &gc);
1.35 nicm 1196:
1.60 nicm 1197: /* Check there is enough space. */
1.77 nicm 1198: if (gc.data.size + ud->size > sizeof gc.data.data)
1.60 nicm 1199: return (-1);
1.35 nicm 1200:
1.77 nicm 1201: /* Append the data. */
1202: memcpy(gc.data.data + gc.data.size, ud->data, ud->size);
1203: gc.data.size += ud->size;
1204:
1205: /* Set the new cell. */
1206: grid_view_set_cell(gd, s->cx - 1, s->cy, &gc);
1.35 nicm 1207:
1208: return (0);
1.1 nicm 1209: }
1210:
1211: /*
1212: * UTF-8 wide characters are a bit of an annoyance. They take up more than one
1213: * cell on the screen, so following cells must not be drawn by marking them as
1214: * padding.
1215: *
1216: * So far, so good. The problem is, when overwriting a padding cell, or a UTF-8
1217: * character, it is necessary to also overwrite any other cells which covered
1218: * by the same character.
1219: */
1.89 nicm 1220: static int
1221: screen_write_overwrite(struct screen_write_ctx *ctx, struct grid_cell *gc,
1222: u_int width)
1.1 nicm 1223: {
1224: struct screen *s = ctx->s;
1225: struct grid *gd = s->grid;
1.89 nicm 1226: struct grid_cell tmp_gc;
1.1 nicm 1227: u_int xx;
1.89 nicm 1228: int done = 0;
1.1 nicm 1229:
1.89 nicm 1230: if (gc->flags & GRID_FLAG_PADDING) {
1.1 nicm 1231: /*
1232: * A padding cell, so clear any following and leading padding
1233: * cells back to the character. Don't overwrite the current
1234: * cell as that happens later anyway.
1235: */
1236: xx = s->cx + 1;
1237: while (--xx > 0) {
1.89 nicm 1238: grid_view_get_cell(gd, xx, s->cy, &tmp_gc);
1239: if (~tmp_gc.flags & GRID_FLAG_PADDING)
1.1 nicm 1240: break;
1241: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
1242: }
1243:
1244: /* Overwrite the character at the start of this padding. */
1245: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
1.89 nicm 1246: done = 1;
1.43 nicm 1247: }
1.1 nicm 1248:
1.43 nicm 1249: /*
1.95 nicm 1250: * Overwrite any padding cells that belong to any UTF-8 characters
1251: * we'll be overwriting with the current character.
1.43 nicm 1252: */
1.95 nicm 1253: if (width != 1 ||
1254: gc->data.width != 1 ||
1255: gc->flags & GRID_FLAG_PADDING) {
1.89 nicm 1256: xx = s->cx + width - 1;
1257: while (++xx < screen_size_x(s)) {
1258: grid_view_get_cell(gd, xx, s->cy, &tmp_gc);
1259: if (~tmp_gc.flags & GRID_FLAG_PADDING)
1260: break;
1261: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
1262: done = 1;
1263: }
1.1 nicm 1264: }
1.89 nicm 1265:
1266: return (done);
1.50 nicm 1267: }
1268:
1269: void
1270: screen_write_setselection(struct screen_write_ctx *ctx, u_char *str, u_int len)
1271: {
1272: struct tty_ctx ttyctx;
1273:
1.87 nicm 1274: screen_write_initctx(ctx, &ttyctx);
1.50 nicm 1275: ttyctx.ptr = str;
1276: ttyctx.num = len;
1277:
1278: tty_write(tty_cmd_setselection, &ttyctx);
1.47 nicm 1279: }
1280:
1281: void
1282: screen_write_rawstring(struct screen_write_ctx *ctx, u_char *str, u_int len)
1283: {
1.87 nicm 1284: struct tty_ctx ttyctx;
1.47 nicm 1285:
1.87 nicm 1286: screen_write_initctx(ctx, &ttyctx);
1.47 nicm 1287: ttyctx.ptr = str;
1288: ttyctx.num = len;
1289:
1290: tty_write(tty_cmd_rawstring, &ttyctx);
1.1 nicm 1291: }
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