Annotation of src/usr.bin/tmux/screen-write.c, Revision 1.131
1.131 ! nicm 1: /* $OpenBSD: screen-write.c,v 1.130 2017/08/09 11:43:45 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 *);
1.109 nicm 28: static void screen_write_collect_clear(struct screen_write_ctx *, u_int,
29: u_int);
30: static void screen_write_collect_scroll(struct screen_write_ctx *);
1.111 nicm 31: static void screen_write_collect_flush(struct screen_write_ctx *, int);
1.87 nicm 32:
1.89 nicm 33: static int screen_write_overwrite(struct screen_write_ctx *,
34: struct grid_cell *, u_int);
1.104 nicm 35: static const struct grid_cell *screen_write_combine(struct screen_write_ctx *,
36: const struct utf8_data *, u_int *);
1.1 nicm 37:
1.88 nicm 38: static const struct grid_cell screen_write_pad_cell = {
1.91 nicm 39: GRID_FLAG_PADDING, 0, 8, 8, { { 0 }, 0, 0, 0 }
1.88 nicm 40: };
41:
1.109 nicm 42: struct screen_write_collect_item {
43: u_int x;
1.118 nicm 44: int wrapped;
1.109 nicm 45:
46: u_int used;
47: char data[256];
48:
49: struct grid_cell gc;
50:
1.126 nicm 51: TAILQ_ENTRY(screen_write_collect_item) entry;
1.109 nicm 52: };
53: struct screen_write_collect_line {
54: TAILQ_HEAD(, screen_write_collect_item) items;
55: };
1.92 nicm 56:
57: /* Initialize writing with a window. */
1.1 nicm 58: void
1.71 nicm 59: screen_write_start(struct screen_write_ctx *ctx, struct window_pane *wp,
60: struct screen *s)
1.1 nicm 61: {
1.108 nicm 62: char tmp[16];
1.109 nicm 63: u_int y;
64:
65: memset(ctx, 0, sizeof *ctx);
1.92 nicm 66:
1.1 nicm 67: ctx->wp = wp;
68: if (wp != NULL && s == NULL)
69: ctx->s = wp->screen;
70: else
71: ctx->s = s;
1.92 nicm 72:
1.109 nicm 73: ctx->list = xcalloc(screen_size_y(ctx->s), sizeof *ctx->list);
74: for (y = 0; y < screen_size_y(ctx->s); y++)
75: TAILQ_INIT(&ctx->list[y].items);
76: ctx->item = xcalloc(1, sizeof *ctx->item);
1.92 nicm 77:
1.122 nicm 78: ctx->scrolled = 0;
79: ctx->bg = 8;
80:
1.108 nicm 81: if (wp != NULL)
1.92 nicm 82: snprintf(tmp, sizeof tmp, "pane %%%u", wp->id);
83: log_debug("%s: size %ux%u, %s", __func__, screen_size_x(ctx->s),
1.108 nicm 84: screen_size_y(ctx->s), wp == NULL ? "no pane" : tmp);
1.1 nicm 85: }
86:
87: /* Finish writing. */
88: void
1.92 nicm 89: screen_write_stop(struct screen_write_ctx *ctx)
90: {
1.109 nicm 91: screen_write_collect_end(ctx);
1.111 nicm 92: screen_write_collect_flush(ctx, 0);
1.92 nicm 93:
1.109 nicm 94: log_debug("%s: %u cells (%u written, %u skipped)", __func__,
95: ctx->cells, ctx->written, ctx->skipped);
1.92 nicm 96:
1.109 nicm 97: free(ctx->item);
98: free(ctx->list); /* flush will have emptied */
1.52 nicm 99: }
100:
101: /* Reset screen state. */
102: void
103: screen_write_reset(struct screen_write_ctx *ctx)
104: {
1.61 nicm 105: struct screen *s = ctx->s;
1.52 nicm 106:
1.61 nicm 107: screen_reset_tabs(s);
108: screen_write_scrollregion(ctx, 0, screen_size_y(s) - 1);
1.63 nicm 109:
1.67 nicm 110: s->mode &= ~(MODE_INSERT|MODE_KCURSOR|MODE_KKEYPAD|MODE_FOCUSON);
1.82 nicm 111: s->mode &= ~(ALL_MOUSE_MODES|MODE_MOUSE_UTF8|MODE_MOUSE_SGR);
1.52 nicm 112:
1.99 nicm 113: screen_write_clearscreen(ctx, 8);
1.52 nicm 114: screen_write_cursormove(ctx, 0, 0);
1.1 nicm 115: }
116:
117: /* Write character. */
118: void
1.86 nicm 119: screen_write_putc(struct screen_write_ctx *ctx, const struct grid_cell *gcp,
1.69 nicm 120: u_char ch)
1.1 nicm 121: {
1.86 nicm 122: struct grid_cell gc;
123:
124: memcpy(&gc, gcp, sizeof gc);
125:
126: utf8_set(&gc.data, ch);
127: screen_write_cell(ctx, &gc);
1.1 nicm 128: }
129:
1.24 nicm 130: /* Calculate string length, with embedded formatting. */
1.71 nicm 131: size_t
1.75 nicm 132: screen_write_cstrlen(const char *fmt, ...)
1.24 nicm 133: {
134: va_list ap;
135: char *msg, *msg2, *ptr, *ptr2;
136: size_t size;
137:
138: va_start(ap, fmt);
139: xvasprintf(&msg, fmt, ap);
140: va_end(ap);
141: msg2 = xmalloc(strlen(msg) + 1);
142:
143: ptr = msg;
144: ptr2 = msg2;
145: while (*ptr != '\0') {
146: if (ptr[0] == '#' && ptr[1] == '[') {
147: while (*ptr != ']' && *ptr != '\0')
148: ptr++;
149: if (*ptr == ']')
150: ptr++;
151: continue;
152: }
153: *ptr2++ = *ptr++;
154: }
155: *ptr2 = '\0';
156:
1.75 nicm 157: size = screen_write_strlen("%s", msg2);
1.24 nicm 158:
1.56 nicm 159: free(msg);
160: free(msg2);
1.24 nicm 161:
162: return (size);
163: }
164:
1.2 nicm 165: /* Calculate string length. */
1.71 nicm 166: size_t
1.75 nicm 167: screen_write_strlen(const char *fmt, ...)
1.2 nicm 168: {
1.36 nicm 169: va_list ap;
170: char *msg;
1.76 nicm 171: struct utf8_data ud;
1.36 nicm 172: u_char *ptr;
173: size_t left, size = 0;
1.79 nicm 174: enum utf8_state more;
1.2 nicm 175:
176: va_start(ap, fmt);
177: xvasprintf(&msg, fmt, ap);
178: va_end(ap);
179:
180: ptr = msg;
181: while (*ptr != '\0') {
1.79 nicm 182: if (*ptr > 0x7f && utf8_open(&ud, *ptr) == UTF8_MORE) {
1.36 nicm 183: ptr++;
1.2 nicm 184:
185: left = strlen(ptr);
1.77 nicm 186: if (left < (size_t)ud.size - 1)
1.36 nicm 187: break;
1.79 nicm 188: while ((more = utf8_append(&ud, *ptr)) == UTF8_MORE)
1.2 nicm 189: ptr++;
1.36 nicm 190: ptr++;
191:
1.79 nicm 192: if (more == UTF8_DONE)
1.78 nicm 193: size += ud.width;
1.2 nicm 194: } else {
1.75 nicm 195: if (*ptr > 0x1f && *ptr < 0x7f)
196: size++;
1.2 nicm 197: ptr++;
198: }
1.7 ray 199: }
1.2 nicm 200:
1.56 nicm 201: free(msg);
1.2 nicm 202: return (size);
203: }
204:
1.3 nicm 205: /* Write simple string (no UTF-8 or maximum length). */
1.71 nicm 206: void
1.86 nicm 207: screen_write_puts(struct screen_write_ctx *ctx, const struct grid_cell *gcp,
1.71 nicm 208: const char *fmt, ...)
1.1 nicm 209: {
210: va_list ap;
211:
212: va_start(ap, fmt);
1.86 nicm 213: screen_write_vnputs(ctx, -1, gcp, fmt, ap);
1.2 nicm 214: va_end(ap);
215: }
216:
217: /* Write string with length limit (-1 for unlimited). */
1.71 nicm 218: void
219: screen_write_nputs(struct screen_write_ctx *ctx, ssize_t maxlen,
1.86 nicm 220: const struct grid_cell *gcp, const char *fmt, ...)
1.2 nicm 221: {
222: va_list ap;
223:
224: va_start(ap, fmt);
1.86 nicm 225: screen_write_vnputs(ctx, maxlen, gcp, fmt, ap);
1.2 nicm 226: va_end(ap);
227: }
228:
229: void
1.3 nicm 230: screen_write_vnputs(struct screen_write_ctx *ctx, ssize_t maxlen,
1.86 nicm 231: const struct grid_cell *gcp, const char *fmt, va_list ap)
1.2 nicm 232: {
1.86 nicm 233: struct grid_cell gc;
234: struct utf8_data *ud = &gc.data;
1.36 nicm 235: char *msg;
236: u_char *ptr;
237: size_t left, size = 0;
1.79 nicm 238: enum utf8_state more;
1.2 nicm 239:
1.86 nicm 240: memcpy(&gc, gcp, sizeof gc);
1.1 nicm 241: xvasprintf(&msg, fmt, ap);
242:
1.2 nicm 243: ptr = msg;
244: while (*ptr != '\0') {
1.86 nicm 245: if (*ptr > 0x7f && utf8_open(ud, *ptr) == UTF8_MORE) {
1.36 nicm 246: ptr++;
1.2 nicm 247:
248: left = strlen(ptr);
1.86 nicm 249: if (left < (size_t)ud->size - 1)
1.36 nicm 250: break;
1.86 nicm 251: while ((more = utf8_append(ud, *ptr)) == UTF8_MORE)
1.2 nicm 252: ptr++;
1.36 nicm 253: ptr++;
1.7 ray 254:
1.86 nicm 255: if (more != UTF8_DONE)
256: continue;
257: if (maxlen > 0 && size + ud->width > (size_t)maxlen) {
258: while (size < (size_t)maxlen) {
259: screen_write_putc(ctx, &gc, ' ');
260: size++;
1.2 nicm 261: }
1.86 nicm 262: break;
1.2 nicm 263: }
1.86 nicm 264: size += ud->width;
265: screen_write_cell(ctx, &gc);
1.2 nicm 266: } else {
1.86 nicm 267: if (maxlen > 0 && size + 1 > (size_t)maxlen)
1.2 nicm 268: break;
269:
1.57 nicm 270: if (*ptr == '\001')
1.86 nicm 271: gc.attr ^= GRID_ATTR_CHARSET;
1.75 nicm 272: else if (*ptr > 0x1f && *ptr < 0x7f) {
1.57 nicm 273: size++;
1.86 nicm 274: screen_write_putc(ctx, &gc, *ptr);
1.57 nicm 275: }
1.2 nicm 276: ptr++;
277: }
278: }
1.1 nicm 279:
1.56 nicm 280: free(msg);
1.24 nicm 281: }
282:
283: /* Write string, similar to nputs, but with embedded formatting (#[]). */
1.71 nicm 284: void
1.75 nicm 285: screen_write_cnputs(struct screen_write_ctx *ctx, ssize_t maxlen,
1.86 nicm 286: const struct grid_cell *gcp, const char *fmt, ...)
1.24 nicm 287: {
1.86 nicm 288: struct grid_cell gc;
289: struct utf8_data *ud = &gc.data;
1.24 nicm 290: va_list ap;
291: char *msg;
1.36 nicm 292: u_char *ptr, *last;
1.24 nicm 293: size_t left, size = 0;
1.79 nicm 294: enum utf8_state more;
1.24 nicm 295:
1.86 nicm 296: memcpy(&gc, gcp, sizeof gc);
297:
1.24 nicm 298: va_start(ap, fmt);
299: xvasprintf(&msg, fmt, ap);
300: va_end(ap);
301:
302: ptr = msg;
303: while (*ptr != '\0') {
304: if (ptr[0] == '#' && ptr[1] == '[') {
305: ptr += 2;
306: last = ptr + strcspn(ptr, "]");
307: if (*last == '\0') {
308: /* No ]. Not much point in doing anything. */
309: break;
310: }
311: *last = '\0';
312:
1.86 nicm 313: style_parse(gcp, &gc, ptr);
1.24 nicm 314: ptr = last + 1;
315: continue;
316: }
317:
1.86 nicm 318: if (*ptr > 0x7f && utf8_open(ud, *ptr) == UTF8_MORE) {
1.36 nicm 319: ptr++;
1.24 nicm 320:
321: left = strlen(ptr);
1.86 nicm 322: if (left < (size_t)ud->size - 1)
1.36 nicm 323: break;
1.86 nicm 324: while ((more = utf8_append(ud, *ptr)) == UTF8_MORE)
1.24 nicm 325: ptr++;
1.36 nicm 326: ptr++;
1.24 nicm 327:
1.86 nicm 328: if (more != UTF8_DONE)
329: continue;
330: if (maxlen > 0 && size + ud->width > (size_t)maxlen) {
331: while (size < (size_t)maxlen) {
332: screen_write_putc(ctx, &gc, ' ');
333: size++;
1.24 nicm 334: }
1.86 nicm 335: break;
1.24 nicm 336: }
1.86 nicm 337: size += ud->width;
338: screen_write_cell(ctx, &gc);
1.24 nicm 339: } else {
1.86 nicm 340: if (maxlen > 0 && size + 1 > (size_t)maxlen)
1.24 nicm 341: break;
342:
1.75 nicm 343: if (*ptr > 0x1f && *ptr < 0x7f) {
344: size++;
1.86 nicm 345: screen_write_putc(ctx, &gc, *ptr);
1.75 nicm 346: }
1.24 nicm 347: ptr++;
348: }
349: }
350:
1.56 nicm 351: free(msg);
1.1 nicm 352: }
353:
354: /* Copy from another screen. */
355: void
1.95 nicm 356: screen_write_copy(struct screen_write_ctx *ctx, struct screen *src, u_int px,
1.102 nicm 357: u_int py, u_int nx, u_int ny, bitstr_t *markbs,
358: const struct grid_cell *markgc)
1.1 nicm 359: {
360: struct screen *s = ctx->s;
361: struct grid *gd = src->grid;
1.77 nicm 362: struct grid_cell gc;
1.102 nicm 363: u_int xx, yy, cx, cy, b;
1.1 nicm 364:
1.125 nicm 365: if (nx == 0 || ny == 0)
366: return;
367:
1.1 nicm 368: cx = s->cx;
369: cy = s->cy;
1.96 nicm 370:
1.1 nicm 371: for (yy = py; yy < py + ny; yy++) {
1.96 nicm 372: for (xx = px; xx < px + nx; xx++) {
373: grid_get_cell(gd, xx, yy, &gc);
1.102 nicm 374: if (markbs != NULL) {
375: b = (yy * screen_size_x(src)) + xx;
376: if (bit_test(markbs, b)) {
377: gc.attr = markgc->attr;
378: gc.fg = markgc->fg;
379: gc.bg = markgc->bg;
380: }
381: }
1.96 nicm 382: screen_write_cell(ctx, &gc);
383: }
384:
1.1 nicm 385: cy++;
386: screen_write_cursormove(ctx, cx, cy);
1.125 nicm 387: }
388: }
389:
1.129 nicm 390: /* Draw a horizontal line on screen. */
1.125 nicm 391: void
1.129 nicm 392: screen_write_hline(struct screen_write_ctx *ctx, u_int nx, int left, int right)
1.125 nicm 393: {
394: struct screen *s = ctx->s;
395: struct grid_cell gc;
396: u_int cx, cy, i;
397:
398: cx = s->cx;
399: cy = s->cy;
400:
401: memcpy(&gc, &grid_default_cell, sizeof gc);
402: gc.attr |= GRID_ATTR_CHARSET;
403:
404: screen_write_putc(ctx, &gc, left ? 't' : 'q');
405: for (i = 1; i < nx - 1; i++)
406: screen_write_putc(ctx, &gc, 'q');
407: screen_write_putc(ctx, &gc, right ? 'u' : 'q');
1.129 nicm 408:
409: screen_write_cursormove(ctx, cx, cy);
410: }
411:
412: /* Draw a horizontal line on screen. */
413: void
1.130 nicm 414: screen_write_vline(struct screen_write_ctx *ctx, u_int ny, int top, int bottom)
1.129 nicm 415: {
416: struct screen *s = ctx->s;
417: struct grid_cell gc;
418: u_int cx, cy, i;
419:
420: cx = s->cx;
421: cy = s->cy;
422:
423: memcpy(&gc, &grid_default_cell, sizeof gc);
424: gc.attr |= GRID_ATTR_CHARSET;
425:
426: screen_write_putc(ctx, &gc, top ? 'w' : 'x');
427: for (i = 1; i < ny - 1; i++) {
428: screen_write_cursormove(ctx, cx, cy + i);
429: screen_write_putc(ctx, &gc, 'x');
430: }
431: screen_write_cursormove(ctx, cx, cy + ny);
432: screen_write_putc(ctx, &gc, bottom ? 'v' : 'x');
1.125 nicm 433:
434: screen_write_cursormove(ctx, cx, cy);
435: }
436:
437: /* Draw a box on screen. */
438: void
439: screen_write_box(struct screen_write_ctx *ctx, u_int nx, u_int ny)
440: {
441: struct screen *s = ctx->s;
442: struct grid_cell gc;
443: u_int cx, cy, i;
444:
445: cx = s->cx;
446: cy = s->cy;
447:
448: memcpy(&gc, &grid_default_cell, sizeof gc);
449: gc.attr |= GRID_ATTR_CHARSET;
450:
451: screen_write_putc(ctx, &gc, 'l');
452: for (i = 1; i < nx - 1; i++)
453: screen_write_putc(ctx, &gc, 'q');
454: screen_write_putc(ctx, &gc, 'k');
455:
456: screen_write_cursormove(ctx, cx, cy + ny - 1);
457: screen_write_putc(ctx, &gc, 'm');
458: for (i = 1; i < nx - 1; i++)
459: screen_write_putc(ctx, &gc, 'q');
460: screen_write_putc(ctx, &gc, 'j');
461:
462: for (i = 1; i < ny - 1; i++) {
463: screen_write_cursormove(ctx, cx, cy + i);
464: screen_write_putc(ctx, &gc, 'x');
465: }
466: for (i = 1; i < ny - 1; i++) {
467: screen_write_cursormove(ctx, cx + nx - 1, cy + i);
468: screen_write_putc(ctx, &gc, 'x');
469: }
470:
471: screen_write_cursormove(ctx, cx, cy);
472: }
473:
474: /* Write a preview version of a window. */
475: void
476: screen_write_preview(struct screen_write_ctx *ctx, struct screen *src, u_int nx,
477: u_int ny)
478: {
479: struct screen *s = ctx->s;
480: struct grid_cell gc;
481: u_int cx, cy, px, py;
482:
483: cx = s->cx;
484: cy = s->cy;
485:
486: /*
487: * If the cursor is on, pick the area around the cursor, otherwise use
488: * the top left.
489: */
490: if (src->mode & MODE_CURSOR) {
491: px = src->cx;
492: if (px < nx / 3)
493: px = 0;
494: else
495: px = px - nx / 3;
496: if (px + nx > screen_size_x(src)) {
497: if (nx > screen_size_x(src))
498: px = 0;
499: else
500: px = screen_size_x(src) - nx;
501: }
502: py = src->cy;
503: if (py < ny / 3)
504: py = 0;
505: else
506: py = py - ny / 3;
507: if (py + ny > screen_size_y(src)) {
508: if (ny > screen_size_y(src))
509: py = 0;
510: else
511: py = screen_size_y(src) - ny;
512: }
513: } else {
514: px = 0;
515: py = 0;
516: }
517:
518: screen_write_copy(ctx, src, px, src->grid->hsize + py, nx, ny, NULL,
519: NULL);
520:
521: if (src->mode & MODE_CURSOR) {
522: grid_view_get_cell(src->grid, src->cx, src->cy, &gc);
523: gc.attr |= GRID_ATTR_REVERSE;
524: screen_write_cursormove(ctx, cx + (src->cx - px),
525: cy + (src->cy - py));
526: screen_write_cell(ctx, &gc);
1.1 nicm 527: }
528: }
529:
1.17 nicm 530: /* Set up context for TTY command. */
1.87 nicm 531: static void
532: screen_write_initctx(struct screen_write_ctx *ctx, struct tty_ctx *ttyctx)
1.1 nicm 533: {
1.87 nicm 534: struct screen *s = ctx->s;
1.123 nicm 535:
536: memset(ttyctx, 0, sizeof *ttyctx);
1.1 nicm 537:
1.17 nicm 538: ttyctx->wp = ctx->wp;
1.1 nicm 539:
1.17 nicm 540: ttyctx->ocx = s->cx;
541: ttyctx->ocy = s->cy;
542:
543: ttyctx->orlower = s->rlower;
544: ttyctx->orupper = s->rupper;
1.87 nicm 545: }
1.31 nicm 546:
1.61 nicm 547: /* Set a mode. */
548: void
549: screen_write_mode_set(struct screen_write_ctx *ctx, int mode)
550: {
551: struct screen *s = ctx->s;
552:
553: s->mode |= mode;
554: }
555:
556: /* Clear a mode. */
557: void
558: screen_write_mode_clear(struct screen_write_ctx *ctx, int mode)
559: {
560: struct screen *s = ctx->s;
561:
562: s->mode &= ~mode;
563: }
564:
1.1 nicm 565: /* Cursor up by ny. */
566: void
567: screen_write_cursorup(struct screen_write_ctx *ctx, u_int ny)
568: {
569: struct screen *s = ctx->s;
570:
571: if (ny == 0)
572: ny = 1;
573:
1.12 nicm 574: if (s->cy < s->rupper) {
575: /* Above region. */
576: if (ny > s->cy)
577: ny = s->cy;
578: } else {
579: /* Below region. */
580: if (ny > s->cy - s->rupper)
581: ny = s->cy - s->rupper;
582: }
1.66 nicm 583: if (s->cx == screen_size_x(s))
584: s->cx--;
1.1 nicm 585: if (ny == 0)
586: return;
587:
588: s->cy -= ny;
589: }
590:
591: /* Cursor down by ny. */
592: void
593: screen_write_cursordown(struct screen_write_ctx *ctx, u_int ny)
594: {
595: struct screen *s = ctx->s;
596:
597: if (ny == 0)
598: ny = 1;
599:
1.12 nicm 600: if (s->cy > s->rlower) {
601: /* Below region. */
602: if (ny > screen_size_y(s) - 1 - s->cy)
603: ny = screen_size_y(s) - 1 - s->cy;
604: } else {
605: /* Above region. */
606: if (ny > s->rlower - s->cy)
607: ny = s->rlower - s->cy;
608: }
1.66 nicm 609: if (s->cx == screen_size_x(s))
610: s->cx--;
1.1 nicm 611: if (ny == 0)
612: return;
613:
614: s->cy += ny;
615: }
616:
1.101 nicm 617: /* Cursor right by nx. */
1.1 nicm 618: void
619: screen_write_cursorright(struct screen_write_ctx *ctx, u_int nx)
620: {
621: struct screen *s = ctx->s;
622:
623: if (nx == 0)
624: nx = 1;
625:
626: if (nx > screen_size_x(s) - 1 - s->cx)
627: nx = screen_size_x(s) - 1 - s->cx;
628: if (nx == 0)
629: return;
630:
631: s->cx += nx;
632: }
633:
634: /* Cursor left by nx. */
635: void
636: screen_write_cursorleft(struct screen_write_ctx *ctx, u_int nx)
637: {
638: struct screen *s = ctx->s;
639:
640: if (nx == 0)
641: nx = 1;
642:
643: if (nx > s->cx)
644: nx = s->cx;
645: if (nx == 0)
646: return;
647:
648: s->cx -= nx;
1.5 nicm 649: }
650:
1.29 nicm 651: /* Backspace; cursor left unless at start of wrapped line when can move up. */
652: void
653: screen_write_backspace(struct screen_write_ctx *ctx)
654: {
655: struct screen *s = ctx->s;
656: struct grid_line *gl;
657:
658: if (s->cx == 0) {
659: if (s->cy == 0)
660: return;
661: gl = &s->grid->linedata[s->grid->hsize + s->cy - 1];
662: if (gl->flags & GRID_LINE_WRAPPED) {
663: s->cy--;
664: s->cx = screen_size_x(s) - 1;
665: }
666: } else
667: s->cx--;
668: }
669:
1.5 nicm 670: /* VT100 alignment test. */
671: void
672: screen_write_alignmenttest(struct screen_write_ctx *ctx)
673: {
674: struct screen *s = ctx->s;
1.17 nicm 675: struct tty_ctx ttyctx;
1.5 nicm 676: struct grid_cell gc;
677: u_int xx, yy;
678:
1.87 nicm 679: screen_write_initctx(ctx, &ttyctx);
1.17 nicm 680:
1.5 nicm 681: memcpy(&gc, &grid_default_cell, sizeof gc);
1.77 nicm 682: utf8_set(&gc.data, 'E');
1.7 ray 683:
1.5 nicm 684: for (yy = 0; yy < screen_size_y(s); yy++) {
685: for (xx = 0; xx < screen_size_x(s); xx++)
686: grid_view_set_cell(s->grid, xx, yy, &gc);
687: }
1.7 ray 688:
1.5 nicm 689: s->cx = 0;
690: s->cy = 0;
691:
692: s->rupper = 0;
693: s->rlower = screen_size_y(s) - 1;
694:
1.109 nicm 695: screen_write_collect_clear(ctx, 0, screen_size_y(s) - 1);
1.17 nicm 696: tty_write(tty_cmd_alignmenttest, &ttyctx);
1.1 nicm 697: }
698:
699: /* Insert nx characters. */
700: void
1.99 nicm 701: screen_write_insertcharacter(struct screen_write_ctx *ctx, u_int nx, u_int bg)
1.1 nicm 702: {
703: struct screen *s = ctx->s;
1.17 nicm 704: struct tty_ctx ttyctx;
1.1 nicm 705:
706: if (nx == 0)
707: nx = 1;
708:
1.9 nicm 709: if (nx > screen_size_x(s) - s->cx)
710: nx = screen_size_x(s) - s->cx;
1.1 nicm 711: if (nx == 0)
712: return;
713:
1.107 nicm 714: if (s->cx > screen_size_x(s) - 1)
715: return;
716:
1.87 nicm 717: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 718: ttyctx.bg = bg;
1.1 nicm 719:
1.107 nicm 720: grid_view_insert_cells(s->grid, s->cx, s->cy, nx, bg);
1.1 nicm 721:
1.111 nicm 722: screen_write_collect_flush(ctx, 0);
1.17 nicm 723: ttyctx.num = nx;
724: tty_write(tty_cmd_insertcharacter, &ttyctx);
1.1 nicm 725: }
726:
727: /* Delete nx characters. */
728: void
1.99 nicm 729: screen_write_deletecharacter(struct screen_write_ctx *ctx, u_int nx, u_int bg)
1.1 nicm 730: {
731: struct screen *s = ctx->s;
1.17 nicm 732: struct tty_ctx ttyctx;
1.1 nicm 733:
734: if (nx == 0)
735: nx = 1;
736:
1.9 nicm 737: if (nx > screen_size_x(s) - s->cx)
738: nx = screen_size_x(s) - s->cx;
1.1 nicm 739: if (nx == 0)
740: return;
741:
1.107 nicm 742: if (s->cx > screen_size_x(s) - 1)
743: return;
744:
1.87 nicm 745: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 746: ttyctx.bg = bg;
1.1 nicm 747:
1.107 nicm 748: grid_view_delete_cells(s->grid, s->cx, s->cy, nx, bg);
1.1 nicm 749:
1.111 nicm 750: screen_write_collect_flush(ctx, 0);
1.17 nicm 751: ttyctx.num = nx;
752: tty_write(tty_cmd_deletecharacter, &ttyctx);
1.59 nicm 753: }
754:
755: /* Clear nx characters. */
756: void
1.121 nicm 757: screen_write_clearcharacter(struct screen_write_ctx *ctx, u_int nx, u_int bg)
1.59 nicm 758: {
759: struct screen *s = ctx->s;
760: struct tty_ctx ttyctx;
761:
762: if (nx == 0)
763: nx = 1;
764:
765: if (nx > screen_size_x(s) - s->cx)
766: nx = screen_size_x(s) - s->cx;
767: if (nx == 0)
768: return;
769:
1.107 nicm 770: if (s->cx > screen_size_x(s) - 1)
771: return;
772:
1.87 nicm 773: screen_write_initctx(ctx, &ttyctx);
1.121 nicm 774: ttyctx.bg = bg;
1.59 nicm 775:
1.124 nicm 776: grid_view_clear(s->grid, s->cx, s->cy, nx, 1, bg);
1.59 nicm 777:
1.111 nicm 778: screen_write_collect_flush(ctx, 0);
1.59 nicm 779: ttyctx.num = nx;
780: tty_write(tty_cmd_clearcharacter, &ttyctx);
1.1 nicm 781: }
782:
783: /* Insert ny lines. */
784: void
1.99 nicm 785: screen_write_insertline(struct screen_write_ctx *ctx, u_int ny, u_int bg)
1.1 nicm 786: {
787: struct screen *s = ctx->s;
1.107 nicm 788: struct grid *gd = s->grid;
1.17 nicm 789: struct tty_ctx ttyctx;
1.1 nicm 790:
791: if (ny == 0)
792: ny = 1;
793:
1.11 nicm 794: if (s->cy < s->rupper || s->cy > s->rlower) {
795: if (ny > screen_size_y(s) - s->cy)
796: ny = screen_size_y(s) - s->cy;
797: if (ny == 0)
798: return;
799:
1.87 nicm 800: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 801: ttyctx.bg = bg;
1.11 nicm 802:
1.107 nicm 803: grid_view_insert_lines(gd, s->cy, ny, bg);
1.11 nicm 804:
1.111 nicm 805: screen_write_collect_flush(ctx, 0);
1.17 nicm 806: ttyctx.num = ny;
807: tty_write(tty_cmd_insertline, &ttyctx);
1.11 nicm 808: return;
809: }
810:
811: if (ny > s->rlower + 1 - s->cy)
812: ny = s->rlower + 1 - s->cy;
1.1 nicm 813: if (ny == 0)
814: return;
1.41 nicm 815:
1.87 nicm 816: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 817: ttyctx.bg = bg;
1.1 nicm 818:
819: if (s->cy < s->rupper || s->cy > s->rlower)
1.107 nicm 820: grid_view_insert_lines(gd, s->cy, ny, bg);
821: else
822: grid_view_insert_lines_region(gd, s->rlower, s->cy, ny, bg);
1.1 nicm 823:
1.111 nicm 824: screen_write_collect_flush(ctx, 0);
1.17 nicm 825: ttyctx.num = ny;
826: tty_write(tty_cmd_insertline, &ttyctx);
1.1 nicm 827: }
828:
829: /* Delete ny lines. */
830: void
1.99 nicm 831: screen_write_deleteline(struct screen_write_ctx *ctx, u_int ny, u_int bg)
1.1 nicm 832: {
833: struct screen *s = ctx->s;
1.107 nicm 834: struct grid *gd = s->grid;
1.17 nicm 835: struct tty_ctx ttyctx;
1.1 nicm 836:
837: if (ny == 0)
838: ny = 1;
839:
1.11 nicm 840: if (s->cy < s->rupper || s->cy > s->rlower) {
841: if (ny > screen_size_y(s) - s->cy)
842: ny = screen_size_y(s) - s->cy;
843: if (ny == 0)
844: return;
845:
1.87 nicm 846: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 847: ttyctx.bg = bg;
1.11 nicm 848:
1.107 nicm 849: grid_view_delete_lines(gd, s->cy, ny, bg);
1.11 nicm 850:
1.111 nicm 851: screen_write_collect_flush(ctx, 0);
1.17 nicm 852: ttyctx.num = ny;
853: tty_write(tty_cmd_deleteline, &ttyctx);
1.11 nicm 854: return;
855: }
1.41 nicm 856:
1.11 nicm 857: if (ny > s->rlower + 1 - s->cy)
858: ny = s->rlower + 1 - s->cy;
1.1 nicm 859: if (ny == 0)
860: return;
861:
1.87 nicm 862: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 863: ttyctx.bg = bg;
1.1 nicm 864:
865: if (s->cy < s->rupper || s->cy > s->rlower)
1.107 nicm 866: grid_view_delete_lines(gd, s->cy, ny, bg);
867: else
868: grid_view_delete_lines_region(gd, s->rlower, s->cy, ny, bg);
1.1 nicm 869:
1.111 nicm 870: screen_write_collect_flush(ctx, 0);
1.17 nicm 871: ttyctx.num = ny;
872: tty_write(tty_cmd_deleteline, &ttyctx);
1.1 nicm 873: }
874:
875: /* Clear line at cursor. */
876: void
1.99 nicm 877: screen_write_clearline(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 878: {
1.92 nicm 879: struct screen *s = ctx->s;
880: struct grid_line *gl;
881: struct tty_ctx ttyctx;
882: u_int sx = screen_size_x(s);
1.1 nicm 883:
1.92 nicm 884: gl = &s->grid->linedata[s->grid->hsize + s->cy];
1.99 nicm 885: if (gl->cellsize == 0 && bg == 8)
1.92 nicm 886: return;
1.1 nicm 887:
1.108 nicm 888: screen_write_initctx(ctx, &ttyctx);
889: ttyctx.bg = bg;
890:
1.99 nicm 891: grid_view_clear(s->grid, 0, s->cy, sx, 1, bg);
892:
1.109 nicm 893: screen_write_collect_clear(ctx, s->cy, 1);
1.114 nicm 894: screen_write_collect_flush(ctx, 0);
1.17 nicm 895: tty_write(tty_cmd_clearline, &ttyctx);
1.1 nicm 896: }
897:
898: /* Clear to end of line from cursor. */
899: void
1.99 nicm 900: screen_write_clearendofline(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 901: {
1.92 nicm 902: struct screen *s = ctx->s;
903: struct grid_line *gl;
904: struct tty_ctx ttyctx;
905: u_int sx = screen_size_x(s);
1.1 nicm 906:
1.92 nicm 907: gl = &s->grid->linedata[s->grid->hsize + s->cy];
1.99 nicm 908: if (s->cx > sx - 1 || (s->cx >= gl->cellsize && bg == 8))
1.92 nicm 909: return;
1.108 nicm 910:
911: screen_write_initctx(ctx, &ttyctx);
912: ttyctx.bg = bg;
1.1 nicm 913:
1.99 nicm 914: grid_view_clear(s->grid, s->cx, s->cy, sx - s->cx, 1, bg);
915:
1.109 nicm 916: if (s->cx == 0)
917: screen_write_collect_clear(ctx, s->cy, 1);
1.114 nicm 918: screen_write_collect_flush(ctx, 0);
1.41 nicm 919: tty_write(tty_cmd_clearendofline, &ttyctx);
1.1 nicm 920: }
921:
922: /* Clear to start of line from cursor. */
923: void
1.99 nicm 924: screen_write_clearstartofline(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 925: {
926: struct screen *s = ctx->s;
1.17 nicm 927: struct tty_ctx ttyctx;
1.92 nicm 928: u_int sx = screen_size_x(s);
1.1 nicm 929:
1.87 nicm 930: screen_write_initctx(ctx, &ttyctx);
1.99 nicm 931: ttyctx.bg = bg;
1.1 nicm 932:
1.109 nicm 933: if (s->cx > sx - 1)
1.99 nicm 934: grid_view_clear(s->grid, 0, s->cy, sx, 1, bg);
1.109 nicm 935: else
1.99 nicm 936: grid_view_clear(s->grid, 0, s->cy, s->cx + 1, 1, bg);
1.1 nicm 937:
1.109 nicm 938: if (s->cx > sx - 1)
939: screen_write_collect_clear(ctx, s->cy, 1);
1.114 nicm 940: screen_write_collect_flush(ctx, 0);
1.17 nicm 941: tty_write(tty_cmd_clearstartofline, &ttyctx);
1.1 nicm 942: }
943:
1.101 nicm 944: /* Move cursor to px,py. */
1.1 nicm 945: void
946: screen_write_cursormove(struct screen_write_ctx *ctx, u_int px, u_int py)
947: {
948: struct screen *s = ctx->s;
949:
950: if (px > screen_size_x(s) - 1)
951: px = screen_size_x(s) - 1;
952: if (py > screen_size_y(s) - 1)
953: py = screen_size_y(s) - 1;
954:
955: s->cx = px;
956: s->cy = py;
957: }
958:
1.101 nicm 959: /* Reverse index (up with scroll). */
1.1 nicm 960: void
1.122 nicm 961: screen_write_reverseindex(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 962: {
963: struct screen *s = ctx->s;
1.17 nicm 964: struct tty_ctx ttyctx;
1.1 nicm 965:
1.87 nicm 966: screen_write_initctx(ctx, &ttyctx);
1.122 nicm 967: ttyctx.bg = bg;
1.1 nicm 968:
1.109 nicm 969: if (s->cy == s->rupper)
1.122 nicm 970: grid_view_scroll_region_down(s->grid, s->rupper, s->rlower, bg);
1.109 nicm 971: else if (s->cy > 0)
1.1 nicm 972: s->cy--;
973:
1.111 nicm 974: screen_write_collect_flush(ctx, 0);
1.17 nicm 975: tty_write(tty_cmd_reverseindex, &ttyctx);
1.1 nicm 976: }
977:
978: /* Set scroll region. */
979: void
1.83 nicm 980: screen_write_scrollregion(struct screen_write_ctx *ctx, u_int rupper,
981: u_int rlower)
1.1 nicm 982: {
983: struct screen *s = ctx->s;
984:
985: if (rupper > screen_size_y(s) - 1)
986: rupper = screen_size_y(s) - 1;
987: if (rlower > screen_size_y(s) - 1)
988: rlower = screen_size_y(s) - 1;
1.13 nicm 989: if (rupper >= rlower) /* cannot be one line */
1.1 nicm 990: return;
991:
1.111 nicm 992: screen_write_collect_flush(ctx, 0);
1.110 nicm 993:
1.1 nicm 994: /* Cursor moves to top-left. */
995: s->cx = 0;
996: s->cy = 0;
997:
998: s->rupper = rupper;
999: s->rlower = rlower;
1000: }
1001:
1.34 nicm 1002: /* Line feed. */
1.1 nicm 1003: void
1.122 nicm 1004: screen_write_linefeed(struct screen_write_ctx *ctx, int wrapped, u_int bg)
1.1 nicm 1005: {
1.20 nicm 1006: struct screen *s = ctx->s;
1.109 nicm 1007: struct grid *gd = s->grid;
1.20 nicm 1008: struct grid_line *gl;
1.1 nicm 1009:
1.109 nicm 1010: gl = &gd->linedata[gd->hsize + s->cy];
1.20 nicm 1011: if (wrapped)
1012: gl->flags |= GRID_LINE_WRAPPED;
1.73 nicm 1013: else
1014: gl->flags &= ~GRID_LINE_WRAPPED;
1.20 nicm 1015:
1.114 nicm 1016: log_debug("%s: at %u,%u (region %u-%u)", __func__, s->cx, s->cy,
1017: s->rupper, s->rlower);
1018:
1.122 nicm 1019: if (bg != ctx->bg) {
1020: screen_write_collect_flush(ctx, 1);
1021: ctx->bg = bg;
1022: }
1023:
1.92 nicm 1024: if (s->cy == s->rlower) {
1.122 nicm 1025: grid_view_scroll_region_up(gd, s->rupper, s->rlower, bg);
1.109 nicm 1026: screen_write_collect_scroll(ctx);
1.110 nicm 1027: ctx->scrolled++;
1.109 nicm 1028: } else if (s->cy < screen_size_y(s) - 1)
1.1 nicm 1029: s->cy++;
1030: }
1031:
1.110 nicm 1032: /* Scroll up. */
1033: void
1.122 nicm 1034: screen_write_scrollup(struct screen_write_ctx *ctx, u_int lines, u_int bg)
1.110 nicm 1035: {
1036: struct screen *s = ctx->s;
1037: struct grid *gd = s->grid;
1038: u_int i;
1039:
1040: if (lines == 0)
1041: lines = 1;
1042: else if (lines > s->rlower - s->rupper + 1)
1043: lines = s->rlower - s->rupper + 1;
1044:
1.122 nicm 1045: if (bg != ctx->bg) {
1046: screen_write_collect_flush(ctx, 1);
1047: ctx->bg = bg;
1048: }
1049:
1.110 nicm 1050: for (i = 0; i < lines; i++) {
1.122 nicm 1051: grid_view_scroll_region_up(gd, s->rupper, s->rlower, bg);
1.110 nicm 1052: screen_write_collect_scroll(ctx);
1053: }
1054: ctx->scrolled += lines;
1055: }
1056:
1.1 nicm 1057: /* Carriage return (cursor to start of line). */
1058: void
1059: screen_write_carriagereturn(struct screen_write_ctx *ctx)
1060: {
1061: struct screen *s = ctx->s;
1062:
1063: s->cx = 0;
1064: }
1065:
1066: /* Clear to end of screen from cursor. */
1067: void
1.99 nicm 1068: screen_write_clearendofscreen(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1069: {
1070: struct screen *s = ctx->s;
1.107 nicm 1071: struct grid *gd = s->grid;
1.17 nicm 1072: struct tty_ctx ttyctx;
1.92 nicm 1073: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.1 nicm 1074:
1.87 nicm 1075: screen_write_initctx(ctx, &ttyctx);
1.99 nicm 1076: ttyctx.bg = bg;
1.1 nicm 1077:
1.46 nicm 1078: /* Scroll into history if it is enabled and clearing entire screen. */
1.109 nicm 1079: if (s->cx == 0 && s->cy == 0 && (gd->flags & GRID_HISTORY))
1.107 nicm 1080: grid_view_clear_history(gd, bg);
1.109 nicm 1081: else {
1082: if (s->cx <= sx - 1)
1.107 nicm 1083: grid_view_clear(gd, s->cx, s->cy, sx - s->cx, 1, bg);
1084: grid_view_clear(gd, 0, s->cy + 1, sx, sy - (s->cy + 1), bg);
1.46 nicm 1085: }
1.1 nicm 1086:
1.109 nicm 1087: screen_write_collect_clear(ctx, s->cy + 1, sy - (s->cy + 1));
1.111 nicm 1088: screen_write_collect_flush(ctx, 0);
1.17 nicm 1089: tty_write(tty_cmd_clearendofscreen, &ttyctx);
1.1 nicm 1090: }
1091:
1092: /* Clear to start of screen. */
1093: void
1.105 nicm 1094: screen_write_clearstartofscreen(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1095: {
1096: struct screen *s = ctx->s;
1.17 nicm 1097: struct tty_ctx ttyctx;
1.92 nicm 1098: u_int sx = screen_size_x(s);
1.1 nicm 1099:
1.87 nicm 1100: screen_write_initctx(ctx, &ttyctx);
1.105 nicm 1101: ttyctx.bg = bg;
1.1 nicm 1102:
1.109 nicm 1103: if (s->cy > 0)
1.105 nicm 1104: grid_view_clear(s->grid, 0, 0, sx, s->cy, bg);
1.109 nicm 1105: if (s->cx > sx - 1)
1.120 nicm 1106: grid_view_clear(s->grid, 0, s->cy, sx, 1, bg);
1.109 nicm 1107: else
1.120 nicm 1108: grid_view_clear(s->grid, 0, s->cy, s->cx + 1, 1, bg);
1.1 nicm 1109:
1.109 nicm 1110: screen_write_collect_clear(ctx, 0, s->cy);
1.111 nicm 1111: screen_write_collect_flush(ctx, 0);
1.17 nicm 1112: tty_write(tty_cmd_clearstartofscreen, &ttyctx);
1.1 nicm 1113: }
1114:
1115: /* Clear entire screen. */
1116: void
1.99 nicm 1117: screen_write_clearscreen(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1118: {
1119: struct screen *s = ctx->s;
1.17 nicm 1120: struct tty_ctx ttyctx;
1.92 nicm 1121: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.1 nicm 1122:
1.87 nicm 1123: screen_write_initctx(ctx, &ttyctx);
1.99 nicm 1124: ttyctx.bg = bg;
1.1 nicm 1125:
1.46 nicm 1126: /* Scroll into history if it is enabled. */
1127: if (s->grid->flags & GRID_HISTORY)
1.99 nicm 1128: grid_view_clear_history(s->grid, bg);
1.83 nicm 1129: else
1.99 nicm 1130: grid_view_clear(s->grid, 0, 0, sx, sy, bg);
1.1 nicm 1131:
1.109 nicm 1132: screen_write_collect_clear(ctx, 0, sy);
1.17 nicm 1133: tty_write(tty_cmd_clearscreen, &ttyctx);
1.51 nicm 1134: }
1135:
1136: /* Clear entire history. */
1137: void
1138: screen_write_clearhistory(struct screen_write_ctx *ctx)
1139: {
1140: struct screen *s = ctx->s;
1141: struct grid *gd = s->grid;
1142:
1.99 nicm 1143: grid_move_lines(gd, 0, gd->hsize, gd->sy, 8);
1.93 nicm 1144: gd->hscrolled = gd->hsize = 0;
1.1 nicm 1145: }
1146:
1.109 nicm 1147: /* Clear a collected line. */
1148: static void
1149: screen_write_collect_clear(struct screen_write_ctx *ctx, u_int y, u_int n)
1150: {
1151: struct screen_write_collect_item *ci, *tmp;
1152: u_int i;
1153: size_t size;
1154:
1155: for (i = y ; i < y + n; i++) {
1156: if (TAILQ_EMPTY(&ctx->list[i].items))
1157: continue;
1158: size = 0;
1159: TAILQ_FOREACH_SAFE(ci, &ctx->list[i].items, entry, tmp) {
1160: size += ci->used;
1161: TAILQ_REMOVE(&ctx->list[i].items, ci, entry);
1162: free(ci);
1163: }
1164: ctx->skipped += size;
1.114 nicm 1165: log_debug("%s: dropped %zu bytes (line %u)", __func__, size, i);
1.109 nicm 1166: }
1167: }
1168:
1169: /* Scroll collected lines up. */
1170: static void
1171: screen_write_collect_scroll(struct screen_write_ctx *ctx)
1172: {
1173: struct screen *s = ctx->s;
1174: struct screen_write_collect_line *cl;
1175: u_int y;
1176:
1.114 nicm 1177: log_debug("%s: at %u,%u (region %u-%u)", __func__, s->cx, s->cy,
1178: s->rupper, s->rlower);
1179:
1.109 nicm 1180: screen_write_collect_clear(ctx, s->rupper, 1);
1181: for (y = s->rupper; y < s->rlower; y++) {
1182: cl = &ctx->list[y + 1];
1183: TAILQ_CONCAT(&ctx->list[y].items, &cl->items, entry);
1184: TAILQ_INIT(&cl->items);
1185: }
1186: }
1187:
1188: /* Flush collected lines. */
1189: static void
1.111 nicm 1190: screen_write_collect_flush(struct screen_write_ctx *ctx, int scroll_only)
1.109 nicm 1191: {
1192: struct screen *s = ctx->s;
1193: struct screen_write_collect_item *ci, *tmp;
1.116 nicm 1194: u_int y, cx, cy, items = 0;
1.109 nicm 1195: struct tty_ctx ttyctx;
1.116 nicm 1196: size_t written = 0;
1.110 nicm 1197:
1198: if (ctx->scrolled != 0) {
1199: log_debug("%s: scrolled %u (region %u-%u)", __func__,
1200: ctx->scrolled, s->rupper, s->rlower);
1201: if (ctx->scrolled > s->rlower - s->rupper + 1)
1202: ctx->scrolled = s->rlower - s->rupper + 1;
1203:
1204: screen_write_initctx(ctx, &ttyctx);
1205: ttyctx.num = ctx->scrolled;
1.122 nicm 1206: ttyctx.bg = ctx->bg;
1.110 nicm 1207: tty_write(tty_cmd_scrollup, &ttyctx);
1208: }
1209: ctx->scrolled = 0;
1.122 nicm 1210: ctx->bg = 8;
1211:
1.111 nicm 1212: if (scroll_only)
1213: return;
1.109 nicm 1214:
1215: cx = s->cx; cy = s->cy;
1216: for (y = 0; y < screen_size_y(s); y++) {
1217: TAILQ_FOREACH_SAFE(ci, &ctx->list[y].items, entry, tmp) {
1218: screen_write_cursormove(ctx, ci->x, y);
1219: screen_write_initctx(ctx, &ttyctx);
1220: ttyctx.cell = &ci->gc;
1.118 nicm 1221: ttyctx.wrapped = ci->wrapped;
1.109 nicm 1222: ttyctx.ptr = ci->data;
1223: ttyctx.num = ci->used;
1224: tty_write(tty_cmd_cells, &ttyctx);
1.116 nicm 1225:
1226: items++;
1227: written += ci->used;
1.109 nicm 1228:
1229: TAILQ_REMOVE(&ctx->list[y].items, ci, entry);
1230: free(ci);
1231: }
1232: }
1233: s->cx = cx; s->cy = cy;
1.116 nicm 1234:
1235: log_debug("%s: flushed %u items (%zu bytes)", __func__, items, written);
1236: ctx->written += written;
1.109 nicm 1237: }
1238:
1239: /* Finish and store collected cells. */
1240: void
1241: screen_write_collect_end(struct screen_write_ctx *ctx)
1242: {
1243: struct screen *s = ctx->s;
1244: struct screen_write_collect_item *ci = ctx->item;
1245: struct grid_cell gc;
1.131 ! nicm 1246: u_int xx;
1.109 nicm 1247:
1248: if (ci->used == 0)
1249: return;
1250: ci->data[ci->used] = '\0';
1251:
1252: ci->x = s->cx;
1253: TAILQ_INSERT_TAIL(&ctx->list[s->cy].items, ci, entry);
1254: ctx->item = xcalloc(1, sizeof *ctx->item);
1255:
1256: log_debug("%s: %u %s (at %u,%u)", __func__, ci->used, ci->data, s->cx,
1257: s->cy);
1258:
1.131 ! nicm 1259: if (s->cx != 0) {
! 1260: for (xx = s->cx; xx > 0; xx--) {
! 1261: grid_view_get_cell(s->grid, xx, s->cy, &gc);
! 1262: if (~gc.flags & GRID_FLAG_PADDING)
! 1263: break;
! 1264: grid_view_set_cell(s->grid, xx, s->cy, &grid_default_cell);
! 1265: }
! 1266: if (gc.data.width > 1)
! 1267: grid_view_set_cell(s->grid, xx, s->cy, &grid_default_cell);
! 1268: }
! 1269:
1.109 nicm 1270: memcpy(&gc, &ci->gc, sizeof gc);
1271: grid_view_set_cells(s->grid, s->cx, s->cy, &gc, ci->data, ci->used);
1272: s->cx += ci->used;
1.131 ! nicm 1273:
! 1274: for (xx = s->cx; xx < screen_size_x(s); xx++) {
! 1275: grid_view_get_cell(s->grid, xx, s->cy, &gc);
! 1276: if (~gc.flags & GRID_FLAG_PADDING)
! 1277: break;
! 1278: grid_view_set_cell(s->grid, xx, s->cy, &grid_default_cell);
! 1279: }
1.109 nicm 1280: }
1281:
1282: /* Write cell data, collecting if necessary. */
1283: void
1284: screen_write_collect_add(struct screen_write_ctx *ctx,
1285: const struct grid_cell *gc)
1286: {
1287: struct screen *s = ctx->s;
1288: struct screen_write_collect_item *ci;
1289: u_int sx = screen_size_x(s);
1290: int collect;
1291:
1292: /*
1293: * Don't need to check that the attributes and whatnot are still the
1.116 nicm 1294: * same - input_parse will end the collection when anything that isn't
1295: * a plain character is encountered. Also nothing should make it here
1296: * that isn't a single ASCII character.
1.109 nicm 1297: */
1298:
1299: collect = 1;
1.117 nicm 1300: if (gc->data.width != 1 || gc->data.size != 1)
1.109 nicm 1301: collect = 0;
1302: else if (gc->attr & GRID_ATTR_CHARSET)
1303: collect = 0;
1304: else if (~s->mode & MODE_WRAP)
1305: collect = 0;
1306: else if (s->mode & MODE_INSERT)
1307: collect = 0;
1308: else if (s->sel.flag)
1309: collect = 0;
1310: if (!collect) {
1311: screen_write_collect_end(ctx);
1.116 nicm 1312: screen_write_collect_flush(ctx, 0);
1.109 nicm 1313: screen_write_cell(ctx, gc);
1314: return;
1315: }
1316: ctx->cells++;
1317:
1318: if (s->cx > sx - 1 || ctx->item->used > sx - 1 - s->cx)
1319: screen_write_collect_end(ctx);
1.118 nicm 1320: ci = ctx->item; /* may have changed */
1321:
1.109 nicm 1322: if (s->cx > sx - 1) {
1.114 nicm 1323: log_debug("%s: wrapped at %u,%u", __func__, s->cx, s->cy);
1.118 nicm 1324: ci->wrapped = 1;
1.122 nicm 1325: screen_write_linefeed(ctx, 1, 8);
1.109 nicm 1326: s->cx = 0;
1327: }
1328:
1329: if (ci->used == 0)
1330: memcpy(&ci->gc, gc, sizeof ci->gc);
1331: ci->data[ci->used++] = gc->data.data[0];
1332: if (ci->used == (sizeof ci->data) - 1)
1333: screen_write_collect_end(ctx);
1334: }
1335:
1.1 nicm 1336: /* Write cell data. */
1337: void
1.60 nicm 1338: screen_write_cell(struct screen_write_ctx *ctx, const struct grid_cell *gc)
1.1 nicm 1339: {
1340: struct screen *s = ctx->s;
1341: struct grid *gd = s->grid;
1.109 nicm 1342: struct grid_line *gl;
1343: struct grid_cell_entry *gce;
1344: struct grid_cell tmp_gc, now_gc;
1.15 nicm 1345: struct tty_ctx ttyctx;
1.92 nicm 1346: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.115 nicm 1347: u_int width = gc->data.width, xx, last, cx, cy;
1.109 nicm 1348: int selected, skip = 1;
1.1 nicm 1349:
1.109 nicm 1350: /* Ignore padding cells. */
1.1 nicm 1351: if (gc->flags & GRID_FLAG_PADDING)
1352: return;
1.109 nicm 1353: ctx->cells++;
1.32 nicm 1354:
1.109 nicm 1355: /* If the width is zero, combine onto the previous character. */
1.1 nicm 1356: if (width == 0) {
1.112 nicm 1357: screen_write_collect_flush(ctx, 0);
1.104 nicm 1358: if ((gc = screen_write_combine(ctx, &gc->data, &xx)) != 0) {
1.115 nicm 1359: cx = s->cx; cy = s->cy;
1.104 nicm 1360: screen_write_cursormove(ctx, xx, s->cy);
1.87 nicm 1361: screen_write_initctx(ctx, &ttyctx);
1.104 nicm 1362: ttyctx.cell = gc;
1363: tty_write(tty_cmd_cell, &ttyctx);
1.115 nicm 1364: s->cx = cx; s->cy = cy;
1.1 nicm 1365: }
1366: return;
1367: }
1.112 nicm 1368:
1369: /* Flush any existing scrolling. */
1370: screen_write_collect_flush(ctx, 1);
1.1 nicm 1371:
1.109 nicm 1372: /* If this character doesn't fit, ignore it. */
1373: if ((~s->mode & MODE_WRAP) &&
1374: width > 1 &&
1375: (width > sx || (s->cx != sx && s->cx > sx - width)))
1376: return;
1377:
1.6 nicm 1378: /* If in insert mode, make space for the cells. */
1.98 nicm 1379: if (s->mode & MODE_INSERT) {
1.109 nicm 1380: grid_view_insert_cells(s->grid, s->cx, s->cy, width, 8);
1381: skip = 0;
1382: }
1.6 nicm 1383:
1.20 nicm 1384: /* Check this will fit on the current line and wrap if not. */
1.92 nicm 1385: if ((s->mode & MODE_WRAP) && s->cx > sx - width) {
1.128 nicm 1386: log_debug("%s: wrapped at %u,%u", __func__, s->cx, s->cy);
1.122 nicm 1387: screen_write_linefeed(ctx, 1, 8);
1.109 nicm 1388: s->cx = 0;
1.128 nicm 1389: screen_write_collect_flush(ctx, 1);
1.1 nicm 1390: }
1391:
1.64 nicm 1392: /* Sanity check cursor position. */
1.92 nicm 1393: if (s->cx > sx - width || s->cy > sy - 1)
1.1 nicm 1394: return;
1.106 nicm 1395: screen_write_initctx(ctx, &ttyctx);
1396:
1.1 nicm 1397: /* Handle overwriting of UTF-8 characters. */
1.92 nicm 1398: gl = &s->grid->linedata[s->grid->hsize + s->cy];
1399: if (gl->flags & GRID_LINE_EXTENDED) {
1400: grid_view_get_cell(gd, s->cx, s->cy, &now_gc);
1401: if (screen_write_overwrite(ctx, &now_gc, width))
1402: skip = 0;
1403: }
1.1 nicm 1404:
1405: /*
1406: * If the new character is UTF-8 wide, fill in padding cells. Have
1407: * already ensured there is enough room.
1408: */
1.89 nicm 1409: for (xx = s->cx + 1; xx < s->cx + width; xx++) {
1.131 ! nicm 1410: log_debug("%s: new padding at %u,%u", __func__, xx, s->cy);
1.88 nicm 1411: grid_view_set_cell(gd, xx, s->cy, &screen_write_pad_cell);
1.89 nicm 1412: skip = 0;
1413: }
1414:
1415: /* If no change, do not draw. */
1.92 nicm 1416: if (skip) {
1417: if (s->cx >= gl->cellsize)
1418: skip = grid_cells_equal(gc, &grid_default_cell);
1419: else {
1420: gce = &gl->celldata[s->cx];
1421: if (gce->flags & GRID_FLAG_EXTENDED)
1422: skip = 0;
1.95 nicm 1423: else if (gc->flags != gce->flags)
1.92 nicm 1424: skip = 0;
1425: else if (gc->attr != gce->data.attr)
1426: skip = 0;
1427: else if (gc->fg != gce->data.fg)
1428: skip = 0;
1429: else if (gc->bg != gce->data.bg)
1430: skip = 0;
1.95 nicm 1431: else if (gc->data.width != 1)
1432: skip = 0;
1.109 nicm 1433: else if (gc->data.size != 1)
1434: skip = 0;
1.95 nicm 1435: else if (gce->data.data != gc->data.data[0])
1.92 nicm 1436: skip = 0;
1437: }
1438: }
1.1 nicm 1439:
1.127 nicm 1440: /* Update the selected flag and set the cell. */
1.90 nicm 1441: selected = screen_check_selection(s, s->cx, s->cy);
1.109 nicm 1442: if (selected && (~gc->flags & GRID_FLAG_SELECTED)) {
1.90 nicm 1443: memcpy(&tmp_gc, gc, sizeof tmp_gc);
1444: tmp_gc.flags |= GRID_FLAG_SELECTED;
1445: grid_view_set_cell(gd, s->cx, s->cy, &tmp_gc);
1.109 nicm 1446: } else if (!selected && (gc->flags & GRID_FLAG_SELECTED)) {
1.90 nicm 1447: memcpy(&tmp_gc, gc, sizeof tmp_gc);
1448: tmp_gc.flags &= ~GRID_FLAG_SELECTED;
1449: grid_view_set_cell(gd, s->cx, s->cy, &tmp_gc);
1450: } else if (!skip)
1.89 nicm 1451: grid_view_set_cell(gd, s->cx, s->cy, gc);
1.109 nicm 1452: if (selected)
1453: skip = 0;
1.1 nicm 1454:
1.64 nicm 1455: /*
1456: * Move the cursor. If not wrapping, stick at the last character and
1457: * replace it.
1458: */
1.65 nicm 1459: last = !(s->mode & MODE_WRAP);
1.92 nicm 1460: if (s->cx <= sx - last - width)
1.64 nicm 1461: s->cx += width;
1462: else
1.92 nicm 1463: s->cx = sx - last;
1.1 nicm 1464:
1.89 nicm 1465: /* Create space for character in insert mode. */
1.109 nicm 1466: if (s->mode & MODE_INSERT) {
1.113 nicm 1467: screen_write_collect_flush(ctx, 0);
1.17 nicm 1468: ttyctx.num = width;
1469: tty_write(tty_cmd_insertcharacter, &ttyctx);
1470: }
1.89 nicm 1471:
1472: /* Write to the screen. */
1.109 nicm 1473: if (!skip) {
1474: if (selected) {
1475: screen_select_cell(s, &tmp_gc, gc);
1476: ttyctx.cell = &tmp_gc;
1477: } else
1478: ttyctx.cell = gc;
1.16 nicm 1479: tty_write(tty_cmd_cell, &ttyctx);
1.92 nicm 1480: ctx->written++;
1481: } else
1482: ctx->skipped++;
1.35 nicm 1483: }
1484:
1485: /* Combine a UTF-8 zero-width character onto the previous. */
1.104 nicm 1486: static const struct grid_cell *
1487: screen_write_combine(struct screen_write_ctx *ctx, const struct utf8_data *ud,
1488: u_int *xx)
1.35 nicm 1489: {
1490: struct screen *s = ctx->s;
1491: struct grid *gd = s->grid;
1.104 nicm 1492: static struct grid_cell gc;
1493: u_int n;
1.35 nicm 1494:
1495: /* Can't combine if at 0. */
1496: if (s->cx == 0)
1.104 nicm 1497: return (NULL);
1.35 nicm 1498:
1.60 nicm 1499: /* Empty data is out. */
1500: if (ud->size == 0)
1.37 nicm 1501: fatalx("UTF-8 data empty");
1502:
1.60 nicm 1503: /* Retrieve the previous cell. */
1.119 nicm 1504: for (n = 1; n <= s->cx; n++) {
1.104 nicm 1505: grid_view_get_cell(gd, s->cx - n, s->cy, &gc);
1506: if (~gc.flags & GRID_FLAG_PADDING)
1507: break;
1508: }
1.119 nicm 1509: if (n > s->cx)
1.104 nicm 1510: return (NULL);
1511: *xx = s->cx - n;
1.35 nicm 1512:
1.60 nicm 1513: /* Check there is enough space. */
1.77 nicm 1514: if (gc.data.size + ud->size > sizeof gc.data.data)
1.104 nicm 1515: return (NULL);
1516:
1517: log_debug("%s: %.*s onto %.*s at %u,%u", __func__, (int)ud->size,
1518: ud->data, (int)gc.data.size, gc.data.data, *xx, s->cy);
1.35 nicm 1519:
1.77 nicm 1520: /* Append the data. */
1521: memcpy(gc.data.data + gc.data.size, ud->data, ud->size);
1522: gc.data.size += ud->size;
1523:
1524: /* Set the new cell. */
1.104 nicm 1525: grid_view_set_cell(gd, *xx, s->cy, &gc);
1.35 nicm 1526:
1.104 nicm 1527: return (&gc);
1.1 nicm 1528: }
1529:
1530: /*
1531: * UTF-8 wide characters are a bit of an annoyance. They take up more than one
1532: * cell on the screen, so following cells must not be drawn by marking them as
1533: * padding.
1534: *
1535: * So far, so good. The problem is, when overwriting a padding cell, or a UTF-8
1536: * character, it is necessary to also overwrite any other cells which covered
1537: * by the same character.
1538: */
1.89 nicm 1539: static int
1540: screen_write_overwrite(struct screen_write_ctx *ctx, struct grid_cell *gc,
1541: u_int width)
1.1 nicm 1542: {
1543: struct screen *s = ctx->s;
1544: struct grid *gd = s->grid;
1.89 nicm 1545: struct grid_cell tmp_gc;
1.1 nicm 1546: u_int xx;
1.89 nicm 1547: int done = 0;
1.1 nicm 1548:
1.89 nicm 1549: if (gc->flags & GRID_FLAG_PADDING) {
1.1 nicm 1550: /*
1551: * A padding cell, so clear any following and leading padding
1552: * cells back to the character. Don't overwrite the current
1553: * cell as that happens later anyway.
1554: */
1555: xx = s->cx + 1;
1556: while (--xx > 0) {
1.89 nicm 1557: grid_view_get_cell(gd, xx, s->cy, &tmp_gc);
1558: if (~tmp_gc.flags & GRID_FLAG_PADDING)
1.1 nicm 1559: break;
1.131 ! nicm 1560: log_debug("%s: padding at %u,%u", __func__, xx, s->cy);
1.1 nicm 1561: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
1562: }
1563:
1564: /* Overwrite the character at the start of this padding. */
1.131 ! nicm 1565: log_debug("%s: character at %u,%u", __func__, xx, s->cy);
1.1 nicm 1566: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
1.89 nicm 1567: done = 1;
1.43 nicm 1568: }
1.1 nicm 1569:
1.43 nicm 1570: /*
1.95 nicm 1571: * Overwrite any padding cells that belong to any UTF-8 characters
1572: * we'll be overwriting with the current character.
1.43 nicm 1573: */
1.95 nicm 1574: if (width != 1 ||
1575: gc->data.width != 1 ||
1576: gc->flags & GRID_FLAG_PADDING) {
1.89 nicm 1577: xx = s->cx + width - 1;
1578: while (++xx < screen_size_x(s)) {
1579: grid_view_get_cell(gd, xx, s->cy, &tmp_gc);
1580: if (~tmp_gc.flags & GRID_FLAG_PADDING)
1581: break;
1.131 ! nicm 1582: log_debug("%s: overwrite at %u,%u", __func__, xx, s->cy);
1.89 nicm 1583: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
1584: done = 1;
1585: }
1.1 nicm 1586: }
1.89 nicm 1587:
1588: return (done);
1.50 nicm 1589: }
1590:
1.107 nicm 1591: /* Set external clipboard. */
1.50 nicm 1592: void
1593: screen_write_setselection(struct screen_write_ctx *ctx, u_char *str, u_int len)
1594: {
1595: struct tty_ctx ttyctx;
1596:
1.87 nicm 1597: screen_write_initctx(ctx, &ttyctx);
1.50 nicm 1598: ttyctx.ptr = str;
1599: ttyctx.num = len;
1600:
1601: tty_write(tty_cmd_setselection, &ttyctx);
1.47 nicm 1602: }
1603:
1.107 nicm 1604: /* Write unmodified string. */
1.47 nicm 1605: void
1606: screen_write_rawstring(struct screen_write_ctx *ctx, u_char *str, u_int len)
1607: {
1.87 nicm 1608: struct tty_ctx ttyctx;
1.47 nicm 1609:
1.87 nicm 1610: screen_write_initctx(ctx, &ttyctx);
1.47 nicm 1611: ttyctx.ptr = str;
1612: ttyctx.num = len;
1613:
1614: tty_write(tty_cmd_rawstring, &ttyctx);
1.1 nicm 1615: }
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