Annotation of src/usr.bin/tmux/screen-write.c, Revision 1.136
1.136 ! nicm 1: /* $OpenBSD: screen-write.c,v 1.135 2017/11/15 19:21:24 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:
1.132 nicm 354: /* Copy from another screen. Assumes target region is big enough. */
1.1 nicm 355: void
1.95 nicm 356: screen_write_copy(struct screen_write_ctx *ctx, struct screen *src, u_int px,
1.132 nicm 357: u_int py, u_int nx, u_int ny, bitstr_t *mbs, const struct grid_cell *mgc)
1.1 nicm 358: {
359: struct screen *s = ctx->s;
360: struct grid *gd = src->grid;
1.77 nicm 361: struct grid_cell gc;
1.102 nicm 362: u_int xx, yy, cx, cy, b;
1.1 nicm 363:
1.125 nicm 364: if (nx == 0 || ny == 0)
365: return;
366:
1.1 nicm 367: cx = s->cx;
368: cy = s->cy;
1.96 nicm 369:
1.1 nicm 370: for (yy = py; yy < py + ny; yy++) {
1.96 nicm 371: for (xx = px; xx < px + nx; xx++) {
372: grid_get_cell(gd, xx, yy, &gc);
1.132 nicm 373: if (mbs != NULL) {
1.102 nicm 374: b = (yy * screen_size_x(src)) + xx;
1.132 nicm 375: if (bit_test(mbs, b)) {
376: gc.attr = mgc->attr;
377: gc.fg = mgc->fg;
378: gc.bg = mgc->bg;
1.102 nicm 379: }
380: }
1.135 nicm 381: if (xx + gc.data.width <= px + nx)
382: screen_write_cell(ctx, &gc);
1.96 nicm 383: }
1.132 nicm 384: cy++;
385: screen_write_cursormove(ctx, cx, cy);
386: }
387: }
388:
389: /*
390: * Copy from another screen but without the selection stuff. Also assumes the
391: * target region is already big enough and already cleared.
392: */
393: void
394: screen_write_fast_copy(struct screen_write_ctx *ctx, struct screen *src,
395: u_int px, u_int py, u_int nx, u_int ny)
396: {
397: struct screen *s = ctx->s;
398: struct grid *gd = src->grid;
399: struct grid_cell gc;
400: u_int xx, yy, cx, cy;
1.96 nicm 401:
1.132 nicm 402: if (nx == 0 || ny == 0)
403: return;
404:
405: cy = s->cy;
406: for (yy = py; yy < py + ny; yy++) {
1.134 nicm 407: if (yy >= gd->hsize + gd->sy)
408: break;
1.132 nicm 409: cx = s->cx;
410: for (xx = px; xx < px + nx; xx++) {
411: if (xx >= gd->linedata[yy].cellsize)
412: break;
413: grid_get_cell(gd, xx, yy, &gc);
1.135 nicm 414: if (xx + gc.data.width > px + nx)
415: break;
1.132 nicm 416: if (!grid_cells_equal(&gc, &grid_default_cell))
417: grid_view_set_cell(ctx->s->grid, cx, cy, &gc);
418: cx++;
419: }
1.1 nicm 420: cy++;
1.125 nicm 421: }
422: }
423:
1.129 nicm 424: /* Draw a horizontal line on screen. */
1.125 nicm 425: void
1.129 nicm 426: screen_write_hline(struct screen_write_ctx *ctx, u_int nx, int left, int right)
1.125 nicm 427: {
428: struct screen *s = ctx->s;
429: struct grid_cell gc;
430: u_int cx, cy, i;
431:
432: cx = s->cx;
433: cy = s->cy;
434:
435: memcpy(&gc, &grid_default_cell, sizeof gc);
436: gc.attr |= GRID_ATTR_CHARSET;
437:
438: screen_write_putc(ctx, &gc, left ? 't' : 'q');
439: for (i = 1; i < nx - 1; i++)
440: screen_write_putc(ctx, &gc, 'q');
441: screen_write_putc(ctx, &gc, right ? 'u' : 'q');
1.129 nicm 442:
443: screen_write_cursormove(ctx, cx, cy);
444: }
445:
446: /* Draw a horizontal line on screen. */
447: void
1.130 nicm 448: screen_write_vline(struct screen_write_ctx *ctx, u_int ny, int top, int bottom)
1.129 nicm 449: {
450: struct screen *s = ctx->s;
451: struct grid_cell gc;
452: u_int cx, cy, i;
453:
454: cx = s->cx;
455: cy = s->cy;
456:
457: memcpy(&gc, &grid_default_cell, sizeof gc);
458: gc.attr |= GRID_ATTR_CHARSET;
459:
460: screen_write_putc(ctx, &gc, top ? 'w' : 'x');
461: for (i = 1; i < ny - 1; i++) {
462: screen_write_cursormove(ctx, cx, cy + i);
463: screen_write_putc(ctx, &gc, 'x');
464: }
1.133 nicm 465: screen_write_cursormove(ctx, cx, cy + ny - 1);
1.129 nicm 466: screen_write_putc(ctx, &gc, bottom ? 'v' : 'x');
1.125 nicm 467:
468: screen_write_cursormove(ctx, cx, cy);
469: }
470:
471: /* Draw a box on screen. */
472: void
473: screen_write_box(struct screen_write_ctx *ctx, u_int nx, u_int ny)
474: {
475: struct screen *s = ctx->s;
476: struct grid_cell gc;
477: u_int cx, cy, i;
478:
479: cx = s->cx;
480: cy = s->cy;
481:
482: memcpy(&gc, &grid_default_cell, sizeof gc);
483: gc.attr |= GRID_ATTR_CHARSET;
484:
485: screen_write_putc(ctx, &gc, 'l');
486: for (i = 1; i < nx - 1; i++)
487: screen_write_putc(ctx, &gc, 'q');
488: screen_write_putc(ctx, &gc, 'k');
489:
490: screen_write_cursormove(ctx, cx, cy + ny - 1);
491: screen_write_putc(ctx, &gc, 'm');
492: for (i = 1; i < nx - 1; i++)
493: screen_write_putc(ctx, &gc, 'q');
494: screen_write_putc(ctx, &gc, 'j');
495:
496: for (i = 1; i < ny - 1; i++) {
497: screen_write_cursormove(ctx, cx, cy + i);
498: screen_write_putc(ctx, &gc, 'x');
499: }
500: for (i = 1; i < ny - 1; i++) {
501: screen_write_cursormove(ctx, cx + nx - 1, cy + i);
502: screen_write_putc(ctx, &gc, 'x');
503: }
504:
505: screen_write_cursormove(ctx, cx, cy);
506: }
507:
1.132 nicm 508: /*
509: * Write a preview version of a window. Assumes target area is big enough and
510: * already cleared.
511: */
1.125 nicm 512: void
513: screen_write_preview(struct screen_write_ctx *ctx, struct screen *src, u_int nx,
514: u_int ny)
515: {
516: struct screen *s = ctx->s;
517: struct grid_cell gc;
518: u_int cx, cy, px, py;
519:
520: cx = s->cx;
521: cy = s->cy;
522:
523: /*
524: * If the cursor is on, pick the area around the cursor, otherwise use
525: * the top left.
526: */
527: if (src->mode & MODE_CURSOR) {
528: px = src->cx;
529: if (px < nx / 3)
530: px = 0;
531: else
532: px = px - nx / 3;
533: if (px + nx > screen_size_x(src)) {
534: if (nx > screen_size_x(src))
535: px = 0;
536: else
537: px = screen_size_x(src) - nx;
538: }
539: py = src->cy;
540: if (py < ny / 3)
541: py = 0;
542: else
543: py = py - ny / 3;
544: if (py + ny > screen_size_y(src)) {
545: if (ny > screen_size_y(src))
546: py = 0;
547: else
548: py = screen_size_y(src) - ny;
549: }
550: } else {
551: px = 0;
552: py = 0;
553: }
554:
1.132 nicm 555: screen_write_fast_copy(ctx, src, px, src->grid->hsize + py, nx, ny);
1.125 nicm 556:
557: if (src->mode & MODE_CURSOR) {
558: grid_view_get_cell(src->grid, src->cx, src->cy, &gc);
559: gc.attr |= GRID_ATTR_REVERSE;
560: screen_write_cursormove(ctx, cx + (src->cx - px),
561: cy + (src->cy - py));
562: screen_write_cell(ctx, &gc);
1.1 nicm 563: }
564: }
565:
1.17 nicm 566: /* Set up context for TTY command. */
1.87 nicm 567: static void
568: screen_write_initctx(struct screen_write_ctx *ctx, struct tty_ctx *ttyctx)
1.1 nicm 569: {
1.87 nicm 570: struct screen *s = ctx->s;
1.123 nicm 571:
572: memset(ttyctx, 0, sizeof *ttyctx);
1.1 nicm 573:
1.17 nicm 574: ttyctx->wp = ctx->wp;
1.1 nicm 575:
1.17 nicm 576: ttyctx->ocx = s->cx;
577: ttyctx->ocy = s->cy;
578:
579: ttyctx->orlower = s->rlower;
580: ttyctx->orupper = s->rupper;
1.87 nicm 581: }
1.31 nicm 582:
1.61 nicm 583: /* Set a mode. */
584: void
585: screen_write_mode_set(struct screen_write_ctx *ctx, int mode)
586: {
587: struct screen *s = ctx->s;
588:
589: s->mode |= mode;
590: }
591:
592: /* Clear a mode. */
593: void
594: screen_write_mode_clear(struct screen_write_ctx *ctx, int mode)
595: {
596: struct screen *s = ctx->s;
597:
598: s->mode &= ~mode;
599: }
600:
1.1 nicm 601: /* Cursor up by ny. */
602: void
603: screen_write_cursorup(struct screen_write_ctx *ctx, u_int ny)
604: {
605: struct screen *s = ctx->s;
606:
607: if (ny == 0)
608: ny = 1;
609:
1.12 nicm 610: if (s->cy < s->rupper) {
611: /* Above region. */
612: if (ny > s->cy)
613: ny = s->cy;
614: } else {
615: /* Below region. */
616: if (ny > s->cy - s->rupper)
617: ny = s->cy - s->rupper;
618: }
1.66 nicm 619: if (s->cx == screen_size_x(s))
620: s->cx--;
1.1 nicm 621: if (ny == 0)
622: return;
623:
624: s->cy -= ny;
625: }
626:
627: /* Cursor down by ny. */
628: void
629: screen_write_cursordown(struct screen_write_ctx *ctx, u_int ny)
630: {
631: struct screen *s = ctx->s;
632:
633: if (ny == 0)
634: ny = 1;
635:
1.12 nicm 636: if (s->cy > s->rlower) {
637: /* Below region. */
638: if (ny > screen_size_y(s) - 1 - s->cy)
639: ny = screen_size_y(s) - 1 - s->cy;
640: } else {
641: /* Above region. */
642: if (ny > s->rlower - s->cy)
643: ny = s->rlower - s->cy;
644: }
1.66 nicm 645: if (s->cx == screen_size_x(s))
646: s->cx--;
1.1 nicm 647: if (ny == 0)
648: return;
649:
650: s->cy += ny;
651: }
652:
1.101 nicm 653: /* Cursor right by nx. */
1.1 nicm 654: void
655: screen_write_cursorright(struct screen_write_ctx *ctx, u_int nx)
656: {
657: struct screen *s = ctx->s;
658:
659: if (nx == 0)
660: nx = 1;
661:
662: if (nx > screen_size_x(s) - 1 - s->cx)
663: nx = screen_size_x(s) - 1 - s->cx;
664: if (nx == 0)
665: return;
666:
667: s->cx += nx;
668: }
669:
670: /* Cursor left by nx. */
671: void
672: screen_write_cursorleft(struct screen_write_ctx *ctx, u_int nx)
673: {
674: struct screen *s = ctx->s;
675:
676: if (nx == 0)
677: nx = 1;
678:
679: if (nx > s->cx)
680: nx = s->cx;
681: if (nx == 0)
682: return;
683:
684: s->cx -= nx;
1.5 nicm 685: }
686:
1.29 nicm 687: /* Backspace; cursor left unless at start of wrapped line when can move up. */
688: void
689: screen_write_backspace(struct screen_write_ctx *ctx)
690: {
691: struct screen *s = ctx->s;
692: struct grid_line *gl;
693:
694: if (s->cx == 0) {
695: if (s->cy == 0)
696: return;
697: gl = &s->grid->linedata[s->grid->hsize + s->cy - 1];
698: if (gl->flags & GRID_LINE_WRAPPED) {
699: s->cy--;
700: s->cx = screen_size_x(s) - 1;
701: }
702: } else
703: s->cx--;
704: }
705:
1.5 nicm 706: /* VT100 alignment test. */
707: void
708: screen_write_alignmenttest(struct screen_write_ctx *ctx)
709: {
710: struct screen *s = ctx->s;
1.17 nicm 711: struct tty_ctx ttyctx;
1.5 nicm 712: struct grid_cell gc;
713: u_int xx, yy;
714:
1.87 nicm 715: screen_write_initctx(ctx, &ttyctx);
1.17 nicm 716:
1.5 nicm 717: memcpy(&gc, &grid_default_cell, sizeof gc);
1.77 nicm 718: utf8_set(&gc.data, 'E');
1.7 ray 719:
1.5 nicm 720: for (yy = 0; yy < screen_size_y(s); yy++) {
721: for (xx = 0; xx < screen_size_x(s); xx++)
722: grid_view_set_cell(s->grid, xx, yy, &gc);
723: }
1.7 ray 724:
1.5 nicm 725: s->cx = 0;
726: s->cy = 0;
727:
728: s->rupper = 0;
729: s->rlower = screen_size_y(s) - 1;
730:
1.109 nicm 731: screen_write_collect_clear(ctx, 0, screen_size_y(s) - 1);
1.17 nicm 732: tty_write(tty_cmd_alignmenttest, &ttyctx);
1.1 nicm 733: }
734:
735: /* Insert nx characters. */
736: void
1.99 nicm 737: screen_write_insertcharacter(struct screen_write_ctx *ctx, u_int nx, u_int bg)
1.1 nicm 738: {
739: struct screen *s = ctx->s;
1.17 nicm 740: struct tty_ctx ttyctx;
1.1 nicm 741:
742: if (nx == 0)
743: nx = 1;
744:
1.9 nicm 745: if (nx > screen_size_x(s) - s->cx)
746: nx = screen_size_x(s) - s->cx;
1.1 nicm 747: if (nx == 0)
748: return;
749:
1.107 nicm 750: if (s->cx > screen_size_x(s) - 1)
751: return;
752:
1.87 nicm 753: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 754: ttyctx.bg = bg;
1.1 nicm 755:
1.107 nicm 756: grid_view_insert_cells(s->grid, s->cx, s->cy, nx, bg);
1.1 nicm 757:
1.111 nicm 758: screen_write_collect_flush(ctx, 0);
1.17 nicm 759: ttyctx.num = nx;
760: tty_write(tty_cmd_insertcharacter, &ttyctx);
1.1 nicm 761: }
762:
763: /* Delete nx characters. */
764: void
1.99 nicm 765: screen_write_deletecharacter(struct screen_write_ctx *ctx, u_int nx, u_int bg)
1.1 nicm 766: {
767: struct screen *s = ctx->s;
1.17 nicm 768: struct tty_ctx ttyctx;
1.1 nicm 769:
770: if (nx == 0)
771: nx = 1;
772:
1.9 nicm 773: if (nx > screen_size_x(s) - s->cx)
774: nx = screen_size_x(s) - s->cx;
1.1 nicm 775: if (nx == 0)
776: return;
777:
1.107 nicm 778: if (s->cx > screen_size_x(s) - 1)
779: return;
780:
1.87 nicm 781: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 782: ttyctx.bg = bg;
1.1 nicm 783:
1.107 nicm 784: grid_view_delete_cells(s->grid, s->cx, s->cy, nx, bg);
1.1 nicm 785:
1.111 nicm 786: screen_write_collect_flush(ctx, 0);
1.17 nicm 787: ttyctx.num = nx;
788: tty_write(tty_cmd_deletecharacter, &ttyctx);
1.59 nicm 789: }
790:
791: /* Clear nx characters. */
792: void
1.121 nicm 793: screen_write_clearcharacter(struct screen_write_ctx *ctx, u_int nx, u_int bg)
1.59 nicm 794: {
795: struct screen *s = ctx->s;
796: struct tty_ctx ttyctx;
797:
798: if (nx == 0)
799: nx = 1;
800:
801: if (nx > screen_size_x(s) - s->cx)
802: nx = screen_size_x(s) - s->cx;
803: if (nx == 0)
804: return;
805:
1.107 nicm 806: if (s->cx > screen_size_x(s) - 1)
807: return;
808:
1.87 nicm 809: screen_write_initctx(ctx, &ttyctx);
1.121 nicm 810: ttyctx.bg = bg;
1.59 nicm 811:
1.124 nicm 812: grid_view_clear(s->grid, s->cx, s->cy, nx, 1, bg);
1.59 nicm 813:
1.111 nicm 814: screen_write_collect_flush(ctx, 0);
1.59 nicm 815: ttyctx.num = nx;
816: tty_write(tty_cmd_clearcharacter, &ttyctx);
1.1 nicm 817: }
818:
819: /* Insert ny lines. */
820: void
1.99 nicm 821: screen_write_insertline(struct screen_write_ctx *ctx, u_int ny, u_int bg)
1.1 nicm 822: {
823: struct screen *s = ctx->s;
1.107 nicm 824: struct grid *gd = s->grid;
1.17 nicm 825: struct tty_ctx ttyctx;
1.1 nicm 826:
827: if (ny == 0)
828: ny = 1;
829:
1.11 nicm 830: if (s->cy < s->rupper || s->cy > s->rlower) {
831: if (ny > screen_size_y(s) - s->cy)
832: ny = screen_size_y(s) - s->cy;
833: if (ny == 0)
834: return;
835:
1.87 nicm 836: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 837: ttyctx.bg = bg;
1.11 nicm 838:
1.107 nicm 839: grid_view_insert_lines(gd, s->cy, ny, bg);
1.11 nicm 840:
1.111 nicm 841: screen_write_collect_flush(ctx, 0);
1.17 nicm 842: ttyctx.num = ny;
843: tty_write(tty_cmd_insertline, &ttyctx);
1.11 nicm 844: return;
845: }
846:
847: if (ny > s->rlower + 1 - s->cy)
848: ny = s->rlower + 1 - s->cy;
1.1 nicm 849: if (ny == 0)
850: return;
1.41 nicm 851:
1.87 nicm 852: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 853: ttyctx.bg = bg;
1.1 nicm 854:
855: if (s->cy < s->rupper || s->cy > s->rlower)
1.107 nicm 856: grid_view_insert_lines(gd, s->cy, ny, bg);
857: else
858: grid_view_insert_lines_region(gd, s->rlower, s->cy, ny, bg);
1.1 nicm 859:
1.111 nicm 860: screen_write_collect_flush(ctx, 0);
1.17 nicm 861: ttyctx.num = ny;
862: tty_write(tty_cmd_insertline, &ttyctx);
1.1 nicm 863: }
864:
865: /* Delete ny lines. */
866: void
1.99 nicm 867: screen_write_deleteline(struct screen_write_ctx *ctx, u_int ny, u_int bg)
1.1 nicm 868: {
869: struct screen *s = ctx->s;
1.107 nicm 870: struct grid *gd = s->grid;
1.17 nicm 871: struct tty_ctx ttyctx;
1.1 nicm 872:
873: if (ny == 0)
874: ny = 1;
875:
1.11 nicm 876: if (s->cy < s->rupper || s->cy > s->rlower) {
877: if (ny > screen_size_y(s) - s->cy)
878: ny = screen_size_y(s) - s->cy;
879: if (ny == 0)
880: return;
881:
1.87 nicm 882: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 883: ttyctx.bg = bg;
1.11 nicm 884:
1.107 nicm 885: grid_view_delete_lines(gd, s->cy, ny, bg);
1.11 nicm 886:
1.111 nicm 887: screen_write_collect_flush(ctx, 0);
1.17 nicm 888: ttyctx.num = ny;
889: tty_write(tty_cmd_deleteline, &ttyctx);
1.11 nicm 890: return;
891: }
1.41 nicm 892:
1.11 nicm 893: if (ny > s->rlower + 1 - s->cy)
894: ny = s->rlower + 1 - s->cy;
1.1 nicm 895: if (ny == 0)
896: return;
897:
1.87 nicm 898: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 899: ttyctx.bg = bg;
1.1 nicm 900:
901: if (s->cy < s->rupper || s->cy > s->rlower)
1.107 nicm 902: grid_view_delete_lines(gd, s->cy, ny, bg);
903: else
904: grid_view_delete_lines_region(gd, s->rlower, s->cy, ny, bg);
1.1 nicm 905:
1.111 nicm 906: screen_write_collect_flush(ctx, 0);
1.17 nicm 907: ttyctx.num = ny;
908: tty_write(tty_cmd_deleteline, &ttyctx);
1.1 nicm 909: }
910:
911: /* Clear line at cursor. */
912: void
1.99 nicm 913: screen_write_clearline(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 914: {
1.92 nicm 915: struct screen *s = ctx->s;
916: struct grid_line *gl;
917: struct tty_ctx ttyctx;
918: u_int sx = screen_size_x(s);
1.1 nicm 919:
1.92 nicm 920: gl = &s->grid->linedata[s->grid->hsize + s->cy];
1.99 nicm 921: if (gl->cellsize == 0 && bg == 8)
1.92 nicm 922: return;
1.1 nicm 923:
1.108 nicm 924: screen_write_initctx(ctx, &ttyctx);
925: ttyctx.bg = bg;
926:
1.99 nicm 927: grid_view_clear(s->grid, 0, s->cy, sx, 1, bg);
928:
1.109 nicm 929: screen_write_collect_clear(ctx, s->cy, 1);
1.114 nicm 930: screen_write_collect_flush(ctx, 0);
1.17 nicm 931: tty_write(tty_cmd_clearline, &ttyctx);
1.1 nicm 932: }
933:
934: /* Clear to end of line from cursor. */
935: void
1.99 nicm 936: screen_write_clearendofline(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 937: {
1.92 nicm 938: struct screen *s = ctx->s;
939: struct grid_line *gl;
940: struct tty_ctx ttyctx;
941: u_int sx = screen_size_x(s);
1.1 nicm 942:
1.92 nicm 943: gl = &s->grid->linedata[s->grid->hsize + s->cy];
1.99 nicm 944: if (s->cx > sx - 1 || (s->cx >= gl->cellsize && bg == 8))
1.92 nicm 945: return;
1.108 nicm 946:
947: screen_write_initctx(ctx, &ttyctx);
948: ttyctx.bg = bg;
1.1 nicm 949:
1.99 nicm 950: grid_view_clear(s->grid, s->cx, s->cy, sx - s->cx, 1, bg);
951:
1.109 nicm 952: if (s->cx == 0)
953: screen_write_collect_clear(ctx, s->cy, 1);
1.114 nicm 954: screen_write_collect_flush(ctx, 0);
1.41 nicm 955: tty_write(tty_cmd_clearendofline, &ttyctx);
1.1 nicm 956: }
957:
958: /* Clear to start of line from cursor. */
959: void
1.99 nicm 960: screen_write_clearstartofline(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 961: {
962: struct screen *s = ctx->s;
1.17 nicm 963: struct tty_ctx ttyctx;
1.92 nicm 964: u_int sx = screen_size_x(s);
1.1 nicm 965:
1.87 nicm 966: screen_write_initctx(ctx, &ttyctx);
1.99 nicm 967: ttyctx.bg = bg;
1.1 nicm 968:
1.109 nicm 969: if (s->cx > sx - 1)
1.99 nicm 970: grid_view_clear(s->grid, 0, s->cy, sx, 1, bg);
1.109 nicm 971: else
1.99 nicm 972: grid_view_clear(s->grid, 0, s->cy, s->cx + 1, 1, bg);
1.1 nicm 973:
1.109 nicm 974: if (s->cx > sx - 1)
975: screen_write_collect_clear(ctx, s->cy, 1);
1.114 nicm 976: screen_write_collect_flush(ctx, 0);
1.17 nicm 977: tty_write(tty_cmd_clearstartofline, &ttyctx);
1.1 nicm 978: }
979:
1.101 nicm 980: /* Move cursor to px,py. */
1.1 nicm 981: void
982: screen_write_cursormove(struct screen_write_ctx *ctx, u_int px, u_int py)
983: {
984: struct screen *s = ctx->s;
985:
986: if (px > screen_size_x(s) - 1)
987: px = screen_size_x(s) - 1;
988: if (py > screen_size_y(s) - 1)
989: py = screen_size_y(s) - 1;
990:
991: s->cx = px;
992: s->cy = py;
993: }
994:
1.101 nicm 995: /* Reverse index (up with scroll). */
1.1 nicm 996: void
1.122 nicm 997: screen_write_reverseindex(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 998: {
999: struct screen *s = ctx->s;
1.17 nicm 1000: struct tty_ctx ttyctx;
1.1 nicm 1001:
1.87 nicm 1002: screen_write_initctx(ctx, &ttyctx);
1.122 nicm 1003: ttyctx.bg = bg;
1.1 nicm 1004:
1.109 nicm 1005: if (s->cy == s->rupper)
1.122 nicm 1006: grid_view_scroll_region_down(s->grid, s->rupper, s->rlower, bg);
1.109 nicm 1007: else if (s->cy > 0)
1.1 nicm 1008: s->cy--;
1009:
1.111 nicm 1010: screen_write_collect_flush(ctx, 0);
1.17 nicm 1011: tty_write(tty_cmd_reverseindex, &ttyctx);
1.1 nicm 1012: }
1013:
1014: /* Set scroll region. */
1015: void
1.83 nicm 1016: screen_write_scrollregion(struct screen_write_ctx *ctx, u_int rupper,
1017: u_int rlower)
1.1 nicm 1018: {
1019: struct screen *s = ctx->s;
1020:
1021: if (rupper > screen_size_y(s) - 1)
1022: rupper = screen_size_y(s) - 1;
1023: if (rlower > screen_size_y(s) - 1)
1024: rlower = screen_size_y(s) - 1;
1.13 nicm 1025: if (rupper >= rlower) /* cannot be one line */
1.1 nicm 1026: return;
1027:
1.111 nicm 1028: screen_write_collect_flush(ctx, 0);
1.110 nicm 1029:
1.1 nicm 1030: /* Cursor moves to top-left. */
1031: s->cx = 0;
1032: s->cy = 0;
1033:
1034: s->rupper = rupper;
1035: s->rlower = rlower;
1036: }
1037:
1.34 nicm 1038: /* Line feed. */
1.1 nicm 1039: void
1.122 nicm 1040: screen_write_linefeed(struct screen_write_ctx *ctx, int wrapped, u_int bg)
1.1 nicm 1041: {
1.20 nicm 1042: struct screen *s = ctx->s;
1.109 nicm 1043: struct grid *gd = s->grid;
1.20 nicm 1044: struct grid_line *gl;
1.1 nicm 1045:
1.109 nicm 1046: gl = &gd->linedata[gd->hsize + s->cy];
1.20 nicm 1047: if (wrapped)
1048: gl->flags |= GRID_LINE_WRAPPED;
1.73 nicm 1049: else
1050: gl->flags &= ~GRID_LINE_WRAPPED;
1.20 nicm 1051:
1.114 nicm 1052: log_debug("%s: at %u,%u (region %u-%u)", __func__, s->cx, s->cy,
1053: s->rupper, s->rlower);
1054:
1.122 nicm 1055: if (bg != ctx->bg) {
1056: screen_write_collect_flush(ctx, 1);
1057: ctx->bg = bg;
1058: }
1059:
1.92 nicm 1060: if (s->cy == s->rlower) {
1.122 nicm 1061: grid_view_scroll_region_up(gd, s->rupper, s->rlower, bg);
1.109 nicm 1062: screen_write_collect_scroll(ctx);
1.110 nicm 1063: ctx->scrolled++;
1.109 nicm 1064: } else if (s->cy < screen_size_y(s) - 1)
1.1 nicm 1065: s->cy++;
1066: }
1067:
1.110 nicm 1068: /* Scroll up. */
1069: void
1.122 nicm 1070: screen_write_scrollup(struct screen_write_ctx *ctx, u_int lines, u_int bg)
1.110 nicm 1071: {
1072: struct screen *s = ctx->s;
1073: struct grid *gd = s->grid;
1074: u_int i;
1075:
1076: if (lines == 0)
1077: lines = 1;
1078: else if (lines > s->rlower - s->rupper + 1)
1079: lines = s->rlower - s->rupper + 1;
1080:
1.122 nicm 1081: if (bg != ctx->bg) {
1082: screen_write_collect_flush(ctx, 1);
1083: ctx->bg = bg;
1084: }
1085:
1.110 nicm 1086: for (i = 0; i < lines; i++) {
1.122 nicm 1087: grid_view_scroll_region_up(gd, s->rupper, s->rlower, bg);
1.110 nicm 1088: screen_write_collect_scroll(ctx);
1089: }
1090: ctx->scrolled += lines;
1091: }
1092:
1.1 nicm 1093: /* Carriage return (cursor to start of line). */
1094: void
1095: screen_write_carriagereturn(struct screen_write_ctx *ctx)
1096: {
1097: struct screen *s = ctx->s;
1098:
1099: s->cx = 0;
1100: }
1101:
1102: /* Clear to end of screen from cursor. */
1103: void
1.99 nicm 1104: screen_write_clearendofscreen(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1105: {
1106: struct screen *s = ctx->s;
1.107 nicm 1107: struct grid *gd = s->grid;
1.17 nicm 1108: struct tty_ctx ttyctx;
1.92 nicm 1109: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.1 nicm 1110:
1.87 nicm 1111: screen_write_initctx(ctx, &ttyctx);
1.99 nicm 1112: ttyctx.bg = bg;
1.1 nicm 1113:
1.46 nicm 1114: /* Scroll into history if it is enabled and clearing entire screen. */
1.109 nicm 1115: if (s->cx == 0 && s->cy == 0 && (gd->flags & GRID_HISTORY))
1.107 nicm 1116: grid_view_clear_history(gd, bg);
1.109 nicm 1117: else {
1118: if (s->cx <= sx - 1)
1.107 nicm 1119: grid_view_clear(gd, s->cx, s->cy, sx - s->cx, 1, bg);
1120: grid_view_clear(gd, 0, s->cy + 1, sx, sy - (s->cy + 1), bg);
1.46 nicm 1121: }
1.1 nicm 1122:
1.109 nicm 1123: screen_write_collect_clear(ctx, s->cy + 1, sy - (s->cy + 1));
1.111 nicm 1124: screen_write_collect_flush(ctx, 0);
1.17 nicm 1125: tty_write(tty_cmd_clearendofscreen, &ttyctx);
1.1 nicm 1126: }
1127:
1128: /* Clear to start of screen. */
1129: void
1.105 nicm 1130: screen_write_clearstartofscreen(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1131: {
1132: struct screen *s = ctx->s;
1.17 nicm 1133: struct tty_ctx ttyctx;
1.92 nicm 1134: u_int sx = screen_size_x(s);
1.1 nicm 1135:
1.87 nicm 1136: screen_write_initctx(ctx, &ttyctx);
1.105 nicm 1137: ttyctx.bg = bg;
1.1 nicm 1138:
1.109 nicm 1139: if (s->cy > 0)
1.105 nicm 1140: grid_view_clear(s->grid, 0, 0, sx, s->cy, bg);
1.109 nicm 1141: if (s->cx > sx - 1)
1.120 nicm 1142: grid_view_clear(s->grid, 0, s->cy, sx, 1, bg);
1.109 nicm 1143: else
1.120 nicm 1144: grid_view_clear(s->grid, 0, s->cy, s->cx + 1, 1, bg);
1.1 nicm 1145:
1.109 nicm 1146: screen_write_collect_clear(ctx, 0, s->cy);
1.111 nicm 1147: screen_write_collect_flush(ctx, 0);
1.17 nicm 1148: tty_write(tty_cmd_clearstartofscreen, &ttyctx);
1.1 nicm 1149: }
1150:
1151: /* Clear entire screen. */
1152: void
1.99 nicm 1153: screen_write_clearscreen(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1154: {
1155: struct screen *s = ctx->s;
1.17 nicm 1156: struct tty_ctx ttyctx;
1.92 nicm 1157: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.1 nicm 1158:
1.87 nicm 1159: screen_write_initctx(ctx, &ttyctx);
1.99 nicm 1160: ttyctx.bg = bg;
1.1 nicm 1161:
1.46 nicm 1162: /* Scroll into history if it is enabled. */
1163: if (s->grid->flags & GRID_HISTORY)
1.99 nicm 1164: grid_view_clear_history(s->grid, bg);
1.83 nicm 1165: else
1.99 nicm 1166: grid_view_clear(s->grid, 0, 0, sx, sy, bg);
1.1 nicm 1167:
1.109 nicm 1168: screen_write_collect_clear(ctx, 0, sy);
1.17 nicm 1169: tty_write(tty_cmd_clearscreen, &ttyctx);
1.51 nicm 1170: }
1171:
1172: /* Clear entire history. */
1173: void
1174: screen_write_clearhistory(struct screen_write_ctx *ctx)
1175: {
1176: struct screen *s = ctx->s;
1177: struct grid *gd = s->grid;
1178:
1.99 nicm 1179: grid_move_lines(gd, 0, gd->hsize, gd->sy, 8);
1.93 nicm 1180: gd->hscrolled = gd->hsize = 0;
1.1 nicm 1181: }
1182:
1.109 nicm 1183: /* Clear a collected line. */
1184: static void
1185: screen_write_collect_clear(struct screen_write_ctx *ctx, u_int y, u_int n)
1186: {
1187: struct screen_write_collect_item *ci, *tmp;
1188: u_int i;
1189: size_t size;
1190:
1191: for (i = y ; i < y + n; i++) {
1192: if (TAILQ_EMPTY(&ctx->list[i].items))
1193: continue;
1194: size = 0;
1195: TAILQ_FOREACH_SAFE(ci, &ctx->list[i].items, entry, tmp) {
1196: size += ci->used;
1197: TAILQ_REMOVE(&ctx->list[i].items, ci, entry);
1198: free(ci);
1199: }
1200: ctx->skipped += size;
1.114 nicm 1201: log_debug("%s: dropped %zu bytes (line %u)", __func__, size, i);
1.109 nicm 1202: }
1203: }
1204:
1205: /* Scroll collected lines up. */
1206: static void
1207: screen_write_collect_scroll(struct screen_write_ctx *ctx)
1208: {
1209: struct screen *s = ctx->s;
1210: struct screen_write_collect_line *cl;
1211: u_int y;
1212:
1.114 nicm 1213: log_debug("%s: at %u,%u (region %u-%u)", __func__, s->cx, s->cy,
1214: s->rupper, s->rlower);
1215:
1.109 nicm 1216: screen_write_collect_clear(ctx, s->rupper, 1);
1217: for (y = s->rupper; y < s->rlower; y++) {
1218: cl = &ctx->list[y + 1];
1219: TAILQ_CONCAT(&ctx->list[y].items, &cl->items, entry);
1220: TAILQ_INIT(&cl->items);
1221: }
1222: }
1223:
1224: /* Flush collected lines. */
1225: static void
1.111 nicm 1226: screen_write_collect_flush(struct screen_write_ctx *ctx, int scroll_only)
1.109 nicm 1227: {
1228: struct screen *s = ctx->s;
1229: struct screen_write_collect_item *ci, *tmp;
1.116 nicm 1230: u_int y, cx, cy, items = 0;
1.109 nicm 1231: struct tty_ctx ttyctx;
1.116 nicm 1232: size_t written = 0;
1.110 nicm 1233:
1234: if (ctx->scrolled != 0) {
1235: log_debug("%s: scrolled %u (region %u-%u)", __func__,
1236: ctx->scrolled, s->rupper, s->rlower);
1237: if (ctx->scrolled > s->rlower - s->rupper + 1)
1238: ctx->scrolled = s->rlower - s->rupper + 1;
1239:
1240: screen_write_initctx(ctx, &ttyctx);
1241: ttyctx.num = ctx->scrolled;
1.122 nicm 1242: ttyctx.bg = ctx->bg;
1.110 nicm 1243: tty_write(tty_cmd_scrollup, &ttyctx);
1244: }
1245: ctx->scrolled = 0;
1.122 nicm 1246: ctx->bg = 8;
1247:
1.111 nicm 1248: if (scroll_only)
1249: return;
1.109 nicm 1250:
1251: cx = s->cx; cy = s->cy;
1252: for (y = 0; y < screen_size_y(s); y++) {
1253: TAILQ_FOREACH_SAFE(ci, &ctx->list[y].items, entry, tmp) {
1254: screen_write_cursormove(ctx, ci->x, y);
1255: screen_write_initctx(ctx, &ttyctx);
1256: ttyctx.cell = &ci->gc;
1.118 nicm 1257: ttyctx.wrapped = ci->wrapped;
1.109 nicm 1258: ttyctx.ptr = ci->data;
1259: ttyctx.num = ci->used;
1260: tty_write(tty_cmd_cells, &ttyctx);
1.116 nicm 1261:
1262: items++;
1263: written += ci->used;
1.109 nicm 1264:
1265: TAILQ_REMOVE(&ctx->list[y].items, ci, entry);
1266: free(ci);
1267: }
1268: }
1269: s->cx = cx; s->cy = cy;
1.116 nicm 1270:
1271: log_debug("%s: flushed %u items (%zu bytes)", __func__, items, written);
1272: ctx->written += written;
1.109 nicm 1273: }
1274:
1275: /* Finish and store collected cells. */
1276: void
1277: screen_write_collect_end(struct screen_write_ctx *ctx)
1278: {
1279: struct screen *s = ctx->s;
1280: struct screen_write_collect_item *ci = ctx->item;
1281: struct grid_cell gc;
1.131 nicm 1282: u_int xx;
1.109 nicm 1283:
1284: if (ci->used == 0)
1285: return;
1286: ci->data[ci->used] = '\0';
1287:
1288: ci->x = s->cx;
1289: TAILQ_INSERT_TAIL(&ctx->list[s->cy].items, ci, entry);
1290: ctx->item = xcalloc(1, sizeof *ctx->item);
1291:
1292: log_debug("%s: %u %s (at %u,%u)", __func__, ci->used, ci->data, s->cx,
1293: s->cy);
1294:
1.131 nicm 1295: if (s->cx != 0) {
1296: for (xx = s->cx; xx > 0; xx--) {
1297: grid_view_get_cell(s->grid, xx, s->cy, &gc);
1298: if (~gc.flags & GRID_FLAG_PADDING)
1299: break;
1.136 ! nicm 1300: grid_view_set_cell(s->grid, xx, s->cy,
! 1301: &grid_default_cell);
1.131 nicm 1302: }
1303: if (gc.data.width > 1)
1.136 ! nicm 1304: grid_view_set_cell(s->grid, xx, s->cy,
! 1305: &grid_default_cell);
1.131 nicm 1306: }
1307:
1.109 nicm 1308: memcpy(&gc, &ci->gc, sizeof gc);
1309: grid_view_set_cells(s->grid, s->cx, s->cy, &gc, ci->data, ci->used);
1310: s->cx += ci->used;
1.131 nicm 1311:
1312: for (xx = s->cx; xx < screen_size_x(s); xx++) {
1313: grid_view_get_cell(s->grid, xx, s->cy, &gc);
1314: if (~gc.flags & GRID_FLAG_PADDING)
1315: break;
1316: grid_view_set_cell(s->grid, xx, s->cy, &grid_default_cell);
1317: }
1.109 nicm 1318: }
1319:
1320: /* Write cell data, collecting if necessary. */
1321: void
1322: screen_write_collect_add(struct screen_write_ctx *ctx,
1323: const struct grid_cell *gc)
1324: {
1325: struct screen *s = ctx->s;
1326: struct screen_write_collect_item *ci;
1327: u_int sx = screen_size_x(s);
1328: int collect;
1329:
1330: /*
1331: * Don't need to check that the attributes and whatnot are still the
1.116 nicm 1332: * same - input_parse will end the collection when anything that isn't
1333: * a plain character is encountered. Also nothing should make it here
1334: * that isn't a single ASCII character.
1.109 nicm 1335: */
1336:
1337: collect = 1;
1.136 ! nicm 1338: if (gc->data.width != 1 || gc->data.size != 1 || *gc->data.data >= 0x7f)
1.109 nicm 1339: collect = 0;
1340: else if (gc->attr & GRID_ATTR_CHARSET)
1341: collect = 0;
1342: else if (~s->mode & MODE_WRAP)
1343: collect = 0;
1344: else if (s->mode & MODE_INSERT)
1345: collect = 0;
1346: else if (s->sel.flag)
1347: collect = 0;
1348: if (!collect) {
1349: screen_write_collect_end(ctx);
1.116 nicm 1350: screen_write_collect_flush(ctx, 0);
1.109 nicm 1351: screen_write_cell(ctx, gc);
1352: return;
1353: }
1354: ctx->cells++;
1355:
1356: if (s->cx > sx - 1 || ctx->item->used > sx - 1 - s->cx)
1357: screen_write_collect_end(ctx);
1.118 nicm 1358: ci = ctx->item; /* may have changed */
1359:
1.109 nicm 1360: if (s->cx > sx - 1) {
1.114 nicm 1361: log_debug("%s: wrapped at %u,%u", __func__, s->cx, s->cy);
1.118 nicm 1362: ci->wrapped = 1;
1.122 nicm 1363: screen_write_linefeed(ctx, 1, 8);
1.109 nicm 1364: s->cx = 0;
1365: }
1366:
1367: if (ci->used == 0)
1368: memcpy(&ci->gc, gc, sizeof ci->gc);
1369: ci->data[ci->used++] = gc->data.data[0];
1370: if (ci->used == (sizeof ci->data) - 1)
1371: screen_write_collect_end(ctx);
1372: }
1373:
1.1 nicm 1374: /* Write cell data. */
1375: void
1.60 nicm 1376: screen_write_cell(struct screen_write_ctx *ctx, const struct grid_cell *gc)
1.1 nicm 1377: {
1378: struct screen *s = ctx->s;
1379: struct grid *gd = s->grid;
1.109 nicm 1380: struct grid_line *gl;
1381: struct grid_cell_entry *gce;
1382: struct grid_cell tmp_gc, now_gc;
1.15 nicm 1383: struct tty_ctx ttyctx;
1.92 nicm 1384: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.115 nicm 1385: u_int width = gc->data.width, xx, last, cx, cy;
1.109 nicm 1386: int selected, skip = 1;
1.1 nicm 1387:
1.109 nicm 1388: /* Ignore padding cells. */
1.1 nicm 1389: if (gc->flags & GRID_FLAG_PADDING)
1390: return;
1.109 nicm 1391: ctx->cells++;
1.32 nicm 1392:
1.109 nicm 1393: /* If the width is zero, combine onto the previous character. */
1.1 nicm 1394: if (width == 0) {
1.112 nicm 1395: screen_write_collect_flush(ctx, 0);
1.104 nicm 1396: if ((gc = screen_write_combine(ctx, &gc->data, &xx)) != 0) {
1.115 nicm 1397: cx = s->cx; cy = s->cy;
1.104 nicm 1398: screen_write_cursormove(ctx, xx, s->cy);
1.87 nicm 1399: screen_write_initctx(ctx, &ttyctx);
1.104 nicm 1400: ttyctx.cell = gc;
1401: tty_write(tty_cmd_cell, &ttyctx);
1.115 nicm 1402: s->cx = cx; s->cy = cy;
1.1 nicm 1403: }
1404: return;
1405: }
1.112 nicm 1406:
1407: /* Flush any existing scrolling. */
1408: screen_write_collect_flush(ctx, 1);
1.1 nicm 1409:
1.109 nicm 1410: /* If this character doesn't fit, ignore it. */
1411: if ((~s->mode & MODE_WRAP) &&
1412: width > 1 &&
1413: (width > sx || (s->cx != sx && s->cx > sx - width)))
1414: return;
1415:
1.6 nicm 1416: /* If in insert mode, make space for the cells. */
1.98 nicm 1417: if (s->mode & MODE_INSERT) {
1.109 nicm 1418: grid_view_insert_cells(s->grid, s->cx, s->cy, width, 8);
1419: skip = 0;
1420: }
1.6 nicm 1421:
1.20 nicm 1422: /* Check this will fit on the current line and wrap if not. */
1.92 nicm 1423: if ((s->mode & MODE_WRAP) && s->cx > sx - width) {
1.128 nicm 1424: log_debug("%s: wrapped at %u,%u", __func__, s->cx, s->cy);
1.122 nicm 1425: screen_write_linefeed(ctx, 1, 8);
1.109 nicm 1426: s->cx = 0;
1.128 nicm 1427: screen_write_collect_flush(ctx, 1);
1.1 nicm 1428: }
1429:
1.64 nicm 1430: /* Sanity check cursor position. */
1.92 nicm 1431: if (s->cx > sx - width || s->cy > sy - 1)
1.1 nicm 1432: return;
1.106 nicm 1433: screen_write_initctx(ctx, &ttyctx);
1434:
1.1 nicm 1435: /* Handle overwriting of UTF-8 characters. */
1.92 nicm 1436: gl = &s->grid->linedata[s->grid->hsize + s->cy];
1437: if (gl->flags & GRID_LINE_EXTENDED) {
1438: grid_view_get_cell(gd, s->cx, s->cy, &now_gc);
1439: if (screen_write_overwrite(ctx, &now_gc, width))
1440: skip = 0;
1441: }
1.1 nicm 1442:
1443: /*
1444: * If the new character is UTF-8 wide, fill in padding cells. Have
1445: * already ensured there is enough room.
1446: */
1.89 nicm 1447: for (xx = s->cx + 1; xx < s->cx + width; xx++) {
1.131 nicm 1448: log_debug("%s: new padding at %u,%u", __func__, xx, s->cy);
1.88 nicm 1449: grid_view_set_cell(gd, xx, s->cy, &screen_write_pad_cell);
1.89 nicm 1450: skip = 0;
1451: }
1452:
1453: /* If no change, do not draw. */
1.92 nicm 1454: if (skip) {
1455: if (s->cx >= gl->cellsize)
1456: skip = grid_cells_equal(gc, &grid_default_cell);
1457: else {
1458: gce = &gl->celldata[s->cx];
1459: if (gce->flags & GRID_FLAG_EXTENDED)
1460: skip = 0;
1.95 nicm 1461: else if (gc->flags != gce->flags)
1.92 nicm 1462: skip = 0;
1463: else if (gc->attr != gce->data.attr)
1464: skip = 0;
1465: else if (gc->fg != gce->data.fg)
1466: skip = 0;
1467: else if (gc->bg != gce->data.bg)
1468: skip = 0;
1.95 nicm 1469: else if (gc->data.width != 1)
1470: skip = 0;
1.109 nicm 1471: else if (gc->data.size != 1)
1472: skip = 0;
1.95 nicm 1473: else if (gce->data.data != gc->data.data[0])
1.92 nicm 1474: skip = 0;
1475: }
1476: }
1.1 nicm 1477:
1.127 nicm 1478: /* Update the selected flag and set the cell. */
1.90 nicm 1479: selected = screen_check_selection(s, s->cx, s->cy);
1.109 nicm 1480: if (selected && (~gc->flags & GRID_FLAG_SELECTED)) {
1.90 nicm 1481: memcpy(&tmp_gc, gc, sizeof tmp_gc);
1482: tmp_gc.flags |= GRID_FLAG_SELECTED;
1483: grid_view_set_cell(gd, s->cx, s->cy, &tmp_gc);
1.109 nicm 1484: } else if (!selected && (gc->flags & GRID_FLAG_SELECTED)) {
1.90 nicm 1485: memcpy(&tmp_gc, gc, sizeof tmp_gc);
1486: tmp_gc.flags &= ~GRID_FLAG_SELECTED;
1487: grid_view_set_cell(gd, s->cx, s->cy, &tmp_gc);
1488: } else if (!skip)
1.89 nicm 1489: grid_view_set_cell(gd, s->cx, s->cy, gc);
1.109 nicm 1490: if (selected)
1491: skip = 0;
1.1 nicm 1492:
1.64 nicm 1493: /*
1494: * Move the cursor. If not wrapping, stick at the last character and
1495: * replace it.
1496: */
1.65 nicm 1497: last = !(s->mode & MODE_WRAP);
1.92 nicm 1498: if (s->cx <= sx - last - width)
1.64 nicm 1499: s->cx += width;
1500: else
1.92 nicm 1501: s->cx = sx - last;
1.1 nicm 1502:
1.89 nicm 1503: /* Create space for character in insert mode. */
1.109 nicm 1504: if (s->mode & MODE_INSERT) {
1.113 nicm 1505: screen_write_collect_flush(ctx, 0);
1.17 nicm 1506: ttyctx.num = width;
1507: tty_write(tty_cmd_insertcharacter, &ttyctx);
1508: }
1.89 nicm 1509:
1510: /* Write to the screen. */
1.109 nicm 1511: if (!skip) {
1512: if (selected) {
1513: screen_select_cell(s, &tmp_gc, gc);
1514: ttyctx.cell = &tmp_gc;
1515: } else
1516: ttyctx.cell = gc;
1.16 nicm 1517: tty_write(tty_cmd_cell, &ttyctx);
1.92 nicm 1518: ctx->written++;
1519: } else
1520: ctx->skipped++;
1.35 nicm 1521: }
1522:
1523: /* Combine a UTF-8 zero-width character onto the previous. */
1.104 nicm 1524: static const struct grid_cell *
1525: screen_write_combine(struct screen_write_ctx *ctx, const struct utf8_data *ud,
1526: u_int *xx)
1.35 nicm 1527: {
1528: struct screen *s = ctx->s;
1529: struct grid *gd = s->grid;
1.104 nicm 1530: static struct grid_cell gc;
1531: u_int n;
1.35 nicm 1532:
1533: /* Can't combine if at 0. */
1534: if (s->cx == 0)
1.104 nicm 1535: return (NULL);
1.35 nicm 1536:
1.60 nicm 1537: /* Empty data is out. */
1538: if (ud->size == 0)
1.37 nicm 1539: fatalx("UTF-8 data empty");
1540:
1.60 nicm 1541: /* Retrieve the previous cell. */
1.119 nicm 1542: for (n = 1; n <= s->cx; n++) {
1.104 nicm 1543: grid_view_get_cell(gd, s->cx - n, s->cy, &gc);
1544: if (~gc.flags & GRID_FLAG_PADDING)
1545: break;
1546: }
1.119 nicm 1547: if (n > s->cx)
1.104 nicm 1548: return (NULL);
1549: *xx = s->cx - n;
1.35 nicm 1550:
1.60 nicm 1551: /* Check there is enough space. */
1.77 nicm 1552: if (gc.data.size + ud->size > sizeof gc.data.data)
1.104 nicm 1553: return (NULL);
1554:
1555: log_debug("%s: %.*s onto %.*s at %u,%u", __func__, (int)ud->size,
1556: ud->data, (int)gc.data.size, gc.data.data, *xx, s->cy);
1.35 nicm 1557:
1.77 nicm 1558: /* Append the data. */
1559: memcpy(gc.data.data + gc.data.size, ud->data, ud->size);
1560: gc.data.size += ud->size;
1561:
1562: /* Set the new cell. */
1.104 nicm 1563: grid_view_set_cell(gd, *xx, s->cy, &gc);
1.35 nicm 1564:
1.104 nicm 1565: return (&gc);
1.1 nicm 1566: }
1567:
1568: /*
1569: * UTF-8 wide characters are a bit of an annoyance. They take up more than one
1570: * cell on the screen, so following cells must not be drawn by marking them as
1571: * padding.
1572: *
1573: * So far, so good. The problem is, when overwriting a padding cell, or a UTF-8
1574: * character, it is necessary to also overwrite any other cells which covered
1575: * by the same character.
1576: */
1.89 nicm 1577: static int
1578: screen_write_overwrite(struct screen_write_ctx *ctx, struct grid_cell *gc,
1579: u_int width)
1.1 nicm 1580: {
1581: struct screen *s = ctx->s;
1582: struct grid *gd = s->grid;
1.89 nicm 1583: struct grid_cell tmp_gc;
1.1 nicm 1584: u_int xx;
1.89 nicm 1585: int done = 0;
1.1 nicm 1586:
1.89 nicm 1587: if (gc->flags & GRID_FLAG_PADDING) {
1.1 nicm 1588: /*
1589: * A padding cell, so clear any following and leading padding
1590: * cells back to the character. Don't overwrite the current
1591: * cell as that happens later anyway.
1592: */
1593: xx = s->cx + 1;
1594: while (--xx > 0) {
1.89 nicm 1595: grid_view_get_cell(gd, xx, s->cy, &tmp_gc);
1596: if (~tmp_gc.flags & GRID_FLAG_PADDING)
1.1 nicm 1597: break;
1.131 nicm 1598: log_debug("%s: padding at %u,%u", __func__, xx, s->cy);
1.1 nicm 1599: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
1600: }
1601:
1602: /* Overwrite the character at the start of this padding. */
1.131 nicm 1603: log_debug("%s: character at %u,%u", __func__, xx, s->cy);
1.1 nicm 1604: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
1.89 nicm 1605: done = 1;
1.43 nicm 1606: }
1.1 nicm 1607:
1.43 nicm 1608: /*
1.95 nicm 1609: * Overwrite any padding cells that belong to any UTF-8 characters
1610: * we'll be overwriting with the current character.
1.43 nicm 1611: */
1.95 nicm 1612: if (width != 1 ||
1613: gc->data.width != 1 ||
1614: gc->flags & GRID_FLAG_PADDING) {
1.89 nicm 1615: xx = s->cx + width - 1;
1616: while (++xx < screen_size_x(s)) {
1617: grid_view_get_cell(gd, xx, s->cy, &tmp_gc);
1618: if (~tmp_gc.flags & GRID_FLAG_PADDING)
1619: break;
1.131 nicm 1620: log_debug("%s: overwrite at %u,%u", __func__, xx, s->cy);
1.89 nicm 1621: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
1622: done = 1;
1623: }
1.1 nicm 1624: }
1.89 nicm 1625:
1626: return (done);
1.50 nicm 1627: }
1628:
1.107 nicm 1629: /* Set external clipboard. */
1.50 nicm 1630: void
1631: screen_write_setselection(struct screen_write_ctx *ctx, u_char *str, u_int len)
1632: {
1633: struct tty_ctx ttyctx;
1634:
1.87 nicm 1635: screen_write_initctx(ctx, &ttyctx);
1.50 nicm 1636: ttyctx.ptr = str;
1637: ttyctx.num = len;
1638:
1639: tty_write(tty_cmd_setselection, &ttyctx);
1.47 nicm 1640: }
1641:
1.107 nicm 1642: /* Write unmodified string. */
1.47 nicm 1643: void
1644: screen_write_rawstring(struct screen_write_ctx *ctx, u_char *str, u_int len)
1645: {
1.87 nicm 1646: struct tty_ctx ttyctx;
1.47 nicm 1647:
1.87 nicm 1648: screen_write_initctx(ctx, &ttyctx);
1.47 nicm 1649: ttyctx.ptr = str;
1650: ttyctx.num = len;
1651:
1652: tty_write(tty_cmd_rawstring, &ttyctx);
1.1 nicm 1653: }
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