Annotation of src/usr.bin/tmux/screen-write.c, Revision 1.152
1.152 ! nicm 1: /* $OpenBSD: screen-write.c,v 1.151 2019/04/18 11:07:28 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:
1.139 nicm 57: static void
58: screen_write_offset_timer(__unused int fd, __unused short events, void *data)
59: {
60: struct window *w = data;
61:
62: tty_update_window_offset(w);
63: }
64:
65: /* Set cursor position. */
66: static void
67: screen_write_set_cursor(struct screen_write_ctx *ctx, int cx, int cy)
68: {
69: struct window_pane *wp = ctx->wp;
70: struct window *w;
71: struct screen *s = ctx->s;
72: struct timeval tv = { .tv_usec = 10000 };
73:
74: if (cx != -1 && (u_int)cx == s->cx && cy != -1 && (u_int)cy == s->cy)
75: return;
76:
1.144 nicm 77: if (cx != -1) {
1.145 nicm 78: if ((u_int)cx > screen_size_x(s)) /* allow last column */
1.144 nicm 79: cx = screen_size_x(s) - 1;
1.139 nicm 80: s->cx = cx;
1.144 nicm 81: }
82: if (cy != -1) {
83: if ((u_int)cy > screen_size_y(s) - 1)
84: cy = screen_size_y(s) - 1;
1.139 nicm 85: s->cy = cy;
1.144 nicm 86: }
1.139 nicm 87:
88: if (wp == NULL)
89: return;
90: w = wp->window;
91:
92: if (!event_initialized(&w->offset_timer))
93: evtimer_set(&w->offset_timer, screen_write_offset_timer, w);
94: if (!evtimer_pending(&w->offset_timer, NULL))
95: evtimer_add(&w->offset_timer, &tv);
96: }
97:
1.92 nicm 98: /* Initialize writing with a window. */
1.1 nicm 99: void
1.71 nicm 100: screen_write_start(struct screen_write_ctx *ctx, struct window_pane *wp,
101: struct screen *s)
1.1 nicm 102: {
1.139 nicm 103: char tmp[32];
1.109 nicm 104: u_int y;
105:
106: memset(ctx, 0, sizeof *ctx);
1.92 nicm 107:
1.1 nicm 108: ctx->wp = wp;
109: if (wp != NULL && s == NULL)
110: ctx->s = wp->screen;
111: else
112: ctx->s = s;
1.92 nicm 113:
1.109 nicm 114: ctx->list = xcalloc(screen_size_y(ctx->s), sizeof *ctx->list);
115: for (y = 0; y < screen_size_y(ctx->s); y++)
116: TAILQ_INIT(&ctx->list[y].items);
117: ctx->item = xcalloc(1, sizeof *ctx->item);
1.92 nicm 118:
1.122 nicm 119: ctx->scrolled = 0;
120: ctx->bg = 8;
121:
1.139 nicm 122: if (wp != NULL) {
123: snprintf(tmp, sizeof tmp, "pane %%%u (at %u,%u)", wp->id,
124: wp->xoff, wp->yoff);
125: }
1.92 nicm 126: log_debug("%s: size %ux%u, %s", __func__, screen_size_x(ctx->s),
1.108 nicm 127: screen_size_y(ctx->s), wp == NULL ? "no pane" : tmp);
1.1 nicm 128: }
129:
130: /* Finish writing. */
131: void
1.92 nicm 132: screen_write_stop(struct screen_write_ctx *ctx)
133: {
1.109 nicm 134: screen_write_collect_end(ctx);
1.111 nicm 135: screen_write_collect_flush(ctx, 0);
1.92 nicm 136:
1.109 nicm 137: log_debug("%s: %u cells (%u written, %u skipped)", __func__,
138: ctx->cells, ctx->written, ctx->skipped);
1.92 nicm 139:
1.109 nicm 140: free(ctx->item);
141: free(ctx->list); /* flush will have emptied */
1.52 nicm 142: }
143:
144: /* Reset screen state. */
145: void
146: screen_write_reset(struct screen_write_ctx *ctx)
147: {
1.61 nicm 148: struct screen *s = ctx->s;
1.52 nicm 149:
1.61 nicm 150: screen_reset_tabs(s);
151: screen_write_scrollregion(ctx, 0, screen_size_y(s) - 1);
1.63 nicm 152:
1.141 nicm 153: s->mode = MODE_CURSOR | MODE_WRAP;
1.52 nicm 154:
1.99 nicm 155: screen_write_clearscreen(ctx, 8);
1.144 nicm 156: screen_write_set_cursor(ctx, 0, 0);
1.1 nicm 157: }
158:
159: /* Write character. */
160: void
1.86 nicm 161: screen_write_putc(struct screen_write_ctx *ctx, const struct grid_cell *gcp,
1.69 nicm 162: u_char ch)
1.1 nicm 163: {
1.86 nicm 164: struct grid_cell gc;
165:
166: memcpy(&gc, gcp, sizeof gc);
167:
168: utf8_set(&gc.data, ch);
169: screen_write_cell(ctx, &gc);
1.1 nicm 170: }
171:
1.2 nicm 172: /* Calculate string length. */
1.71 nicm 173: size_t
1.75 nicm 174: screen_write_strlen(const char *fmt, ...)
1.2 nicm 175: {
1.36 nicm 176: va_list ap;
177: char *msg;
1.76 nicm 178: struct utf8_data ud;
1.36 nicm 179: u_char *ptr;
180: size_t left, size = 0;
1.79 nicm 181: enum utf8_state more;
1.2 nicm 182:
183: va_start(ap, fmt);
184: xvasprintf(&msg, fmt, ap);
185: va_end(ap);
186:
187: ptr = msg;
188: while (*ptr != '\0') {
1.79 nicm 189: if (*ptr > 0x7f && utf8_open(&ud, *ptr) == UTF8_MORE) {
1.36 nicm 190: ptr++;
1.2 nicm 191:
192: left = strlen(ptr);
1.77 nicm 193: if (left < (size_t)ud.size - 1)
1.36 nicm 194: break;
1.79 nicm 195: while ((more = utf8_append(&ud, *ptr)) == UTF8_MORE)
1.2 nicm 196: ptr++;
1.36 nicm 197: ptr++;
198:
1.79 nicm 199: if (more == UTF8_DONE)
1.78 nicm 200: size += ud.width;
1.2 nicm 201: } else {
1.75 nicm 202: if (*ptr > 0x1f && *ptr < 0x7f)
203: size++;
1.2 nicm 204: ptr++;
205: }
1.7 ray 206: }
1.2 nicm 207:
1.56 nicm 208: free(msg);
1.2 nicm 209: return (size);
210: }
211:
1.3 nicm 212: /* Write simple string (no UTF-8 or maximum length). */
1.71 nicm 213: void
1.86 nicm 214: screen_write_puts(struct screen_write_ctx *ctx, const struct grid_cell *gcp,
1.71 nicm 215: const char *fmt, ...)
1.1 nicm 216: {
217: va_list ap;
218:
219: va_start(ap, fmt);
1.86 nicm 220: screen_write_vnputs(ctx, -1, gcp, fmt, ap);
1.2 nicm 221: va_end(ap);
222: }
223:
224: /* Write string with length limit (-1 for unlimited). */
1.71 nicm 225: void
226: screen_write_nputs(struct screen_write_ctx *ctx, ssize_t maxlen,
1.86 nicm 227: const struct grid_cell *gcp, const char *fmt, ...)
1.2 nicm 228: {
229: va_list ap;
230:
231: va_start(ap, fmt);
1.86 nicm 232: screen_write_vnputs(ctx, maxlen, gcp, fmt, ap);
1.2 nicm 233: va_end(ap);
234: }
235:
236: void
1.3 nicm 237: screen_write_vnputs(struct screen_write_ctx *ctx, ssize_t maxlen,
1.86 nicm 238: const struct grid_cell *gcp, const char *fmt, va_list ap)
1.2 nicm 239: {
1.86 nicm 240: struct grid_cell gc;
241: struct utf8_data *ud = &gc.data;
1.36 nicm 242: char *msg;
243: u_char *ptr;
244: size_t left, size = 0;
1.79 nicm 245: enum utf8_state more;
1.2 nicm 246:
1.86 nicm 247: memcpy(&gc, gcp, sizeof gc);
1.1 nicm 248: xvasprintf(&msg, fmt, ap);
249:
1.2 nicm 250: ptr = msg;
251: while (*ptr != '\0') {
1.86 nicm 252: if (*ptr > 0x7f && utf8_open(ud, *ptr) == UTF8_MORE) {
1.36 nicm 253: ptr++;
1.2 nicm 254:
255: left = strlen(ptr);
1.86 nicm 256: if (left < (size_t)ud->size - 1)
1.36 nicm 257: break;
1.86 nicm 258: while ((more = utf8_append(ud, *ptr)) == UTF8_MORE)
1.2 nicm 259: ptr++;
1.36 nicm 260: ptr++;
1.7 ray 261:
1.86 nicm 262: if (more != UTF8_DONE)
263: continue;
264: if (maxlen > 0 && size + ud->width > (size_t)maxlen) {
265: while (size < (size_t)maxlen) {
266: screen_write_putc(ctx, &gc, ' ');
267: size++;
1.2 nicm 268: }
1.86 nicm 269: break;
1.2 nicm 270: }
1.86 nicm 271: size += ud->width;
272: screen_write_cell(ctx, &gc);
1.2 nicm 273: } else {
1.86 nicm 274: if (maxlen > 0 && size + 1 > (size_t)maxlen)
1.2 nicm 275: break;
276:
1.57 nicm 277: if (*ptr == '\001')
1.86 nicm 278: gc.attr ^= GRID_ATTR_CHARSET;
1.75 nicm 279: else if (*ptr > 0x1f && *ptr < 0x7f) {
1.57 nicm 280: size++;
1.86 nicm 281: screen_write_putc(ctx, &gc, *ptr);
1.75 nicm 282: }
1.24 nicm 283: ptr++;
284: }
285: }
286:
1.56 nicm 287: free(msg);
1.1 nicm 288: }
289:
1.132 nicm 290: /* Copy from another screen. Assumes target region is big enough. */
1.1 nicm 291: void
1.95 nicm 292: screen_write_copy(struct screen_write_ctx *ctx, struct screen *src, u_int px,
1.132 nicm 293: u_int py, u_int nx, u_int ny, bitstr_t *mbs, const struct grid_cell *mgc)
1.1 nicm 294: {
295: struct screen *s = ctx->s;
296: struct grid *gd = src->grid;
1.77 nicm 297: struct grid_cell gc;
1.102 nicm 298: u_int xx, yy, cx, cy, b;
1.1 nicm 299:
1.125 nicm 300: if (nx == 0 || ny == 0)
301: return;
302:
1.1 nicm 303: cx = s->cx;
304: cy = s->cy;
1.96 nicm 305:
1.1 nicm 306: for (yy = py; yy < py + ny; yy++) {
1.96 nicm 307: for (xx = px; xx < px + nx; xx++) {
308: grid_get_cell(gd, xx, yy, &gc);
1.132 nicm 309: if (mbs != NULL) {
1.102 nicm 310: b = (yy * screen_size_x(src)) + xx;
1.132 nicm 311: if (bit_test(mbs, b)) {
312: gc.attr = mgc->attr;
313: gc.fg = mgc->fg;
314: gc.bg = mgc->bg;
1.102 nicm 315: }
316: }
1.135 nicm 317: if (xx + gc.data.width <= px + nx)
318: screen_write_cell(ctx, &gc);
1.96 nicm 319: }
1.132 nicm 320: cy++;
1.144 nicm 321: screen_write_set_cursor(ctx, cx, cy);
1.132 nicm 322: }
323: }
324:
325: /*
326: * Copy from another screen but without the selection stuff. Also assumes the
1.150 nicm 327: * target region is already big enough.
1.132 nicm 328: */
329: void
330: screen_write_fast_copy(struct screen_write_ctx *ctx, struct screen *src,
331: u_int px, u_int py, u_int nx, u_int ny)
332: {
333: struct screen *s = ctx->s;
334: struct grid *gd = src->grid;
335: struct grid_cell gc;
336: u_int xx, yy, cx, cy;
1.96 nicm 337:
1.132 nicm 338: if (nx == 0 || ny == 0)
339: return;
340:
341: cy = s->cy;
342: for (yy = py; yy < py + ny; yy++) {
1.134 nicm 343: if (yy >= gd->hsize + gd->sy)
344: break;
1.132 nicm 345: cx = s->cx;
346: for (xx = px; xx < px + nx; xx++) {
1.137 nicm 347: if (xx >= grid_get_line(gd, yy)->cellsize)
1.132 nicm 348: break;
349: grid_get_cell(gd, xx, yy, &gc);
1.135 nicm 350: if (xx + gc.data.width > px + nx)
351: break;
1.150 nicm 352: grid_view_set_cell(ctx->s->grid, cx, cy, &gc);
1.132 nicm 353: cx++;
354: }
1.1 nicm 355: cy++;
1.125 nicm 356: }
357: }
358:
1.129 nicm 359: /* Draw a horizontal line on screen. */
1.125 nicm 360: void
1.129 nicm 361: screen_write_hline(struct screen_write_ctx *ctx, u_int nx, int left, int right)
1.125 nicm 362: {
363: struct screen *s = ctx->s;
364: struct grid_cell gc;
365: u_int cx, cy, i;
366:
367: cx = s->cx;
368: cy = s->cy;
369:
370: memcpy(&gc, &grid_default_cell, sizeof gc);
371: gc.attr |= GRID_ATTR_CHARSET;
372:
373: screen_write_putc(ctx, &gc, left ? 't' : 'q');
374: for (i = 1; i < nx - 1; i++)
375: screen_write_putc(ctx, &gc, 'q');
376: screen_write_putc(ctx, &gc, right ? 'u' : 'q');
1.129 nicm 377:
1.144 nicm 378: screen_write_set_cursor(ctx, cx, cy);
1.129 nicm 379: }
380:
381: /* Draw a horizontal line on screen. */
382: void
1.130 nicm 383: screen_write_vline(struct screen_write_ctx *ctx, u_int ny, int top, int bottom)
1.129 nicm 384: {
385: struct screen *s = ctx->s;
386: struct grid_cell gc;
387: u_int cx, cy, i;
388:
389: cx = s->cx;
390: cy = s->cy;
391:
392: memcpy(&gc, &grid_default_cell, sizeof gc);
393: gc.attr |= GRID_ATTR_CHARSET;
394:
395: screen_write_putc(ctx, &gc, top ? 'w' : 'x');
396: for (i = 1; i < ny - 1; i++) {
1.144 nicm 397: screen_write_set_cursor(ctx, cx, cy + i);
1.129 nicm 398: screen_write_putc(ctx, &gc, 'x');
399: }
1.144 nicm 400: screen_write_set_cursor(ctx, cx, cy + ny - 1);
1.129 nicm 401: screen_write_putc(ctx, &gc, bottom ? 'v' : 'x');
1.152 ! nicm 402:
! 403: screen_write_set_cursor(ctx, cx, cy);
! 404: }
! 405:
! 406: /* Draw a menu on screen. */
! 407: void
! 408: screen_write_menu(struct screen_write_ctx *ctx, struct menu *menu, int choice)
! 409: {
! 410: struct screen *s = ctx->s;
! 411: struct grid_cell gc;
! 412: u_int cx, cy, i, j;
! 413:
! 414: cx = s->cx;
! 415: cy = s->cy;
! 416:
! 417: memcpy(&gc, &grid_default_cell, sizeof gc);
! 418:
! 419: screen_write_box(ctx, menu->width + 4, menu->count + 2);
! 420: screen_write_cursormove(ctx, cx + 2, cy, 0);
! 421: format_draw(ctx, &gc, menu->width, menu->title, NULL);
! 422:
! 423: for (i = 0; i < menu->count; i++) {
! 424: if (menu->items[i].name == NULL) {
! 425: screen_write_cursormove(ctx, cx, cy + 1 + i, 0);
! 426: screen_write_hline(ctx, menu->width + 4, 1, 1);
! 427: } else {
! 428: if (choice >= 0 && i == (u_int)choice)
! 429: gc.attr |= GRID_ATTR_REVERSE;
! 430: screen_write_cursormove(ctx, cx + 2, cy + 1 + i, 0);
! 431: for (j = 0; j < menu->width; j++)
! 432: screen_write_putc(ctx, &gc, ' ');
! 433: screen_write_cursormove(ctx, cx + 2, cy + 1 + i, 0);
! 434: format_draw(ctx, &gc, menu->width, menu->items[i].name,
! 435: NULL);
! 436: if (choice >= 0 && i == (u_int)choice)
! 437: gc.attr &= ~GRID_ATTR_REVERSE;
! 438: }
! 439: }
1.125 nicm 440:
1.144 nicm 441: screen_write_set_cursor(ctx, cx, cy);
1.125 nicm 442: }
443:
444: /* Draw a box on screen. */
445: void
446: screen_write_box(struct screen_write_ctx *ctx, u_int nx, u_int ny)
447: {
448: struct screen *s = ctx->s;
449: struct grid_cell gc;
450: u_int cx, cy, i;
451:
452: cx = s->cx;
453: cy = s->cy;
454:
455: memcpy(&gc, &grid_default_cell, sizeof gc);
456: gc.attr |= GRID_ATTR_CHARSET;
457:
458: screen_write_putc(ctx, &gc, 'l');
459: for (i = 1; i < nx - 1; i++)
460: screen_write_putc(ctx, &gc, 'q');
461: screen_write_putc(ctx, &gc, 'k');
462:
1.144 nicm 463: screen_write_set_cursor(ctx, cx, cy + ny - 1);
1.125 nicm 464: screen_write_putc(ctx, &gc, 'm');
465: for (i = 1; i < nx - 1; i++)
466: screen_write_putc(ctx, &gc, 'q');
467: screen_write_putc(ctx, &gc, 'j');
468:
469: for (i = 1; i < ny - 1; i++) {
1.144 nicm 470: screen_write_set_cursor(ctx, cx, cy + i);
1.125 nicm 471: screen_write_putc(ctx, &gc, 'x');
472: }
473: for (i = 1; i < ny - 1; i++) {
1.144 nicm 474: screen_write_set_cursor(ctx, cx + nx - 1, cy + i);
1.125 nicm 475: screen_write_putc(ctx, &gc, 'x');
476: }
477:
1.144 nicm 478: screen_write_set_cursor(ctx, cx, cy);
1.125 nicm 479: }
480:
1.132 nicm 481: /*
482: * Write a preview version of a window. Assumes target area is big enough and
483: * already cleared.
484: */
1.125 nicm 485: void
486: screen_write_preview(struct screen_write_ctx *ctx, struct screen *src, u_int nx,
487: u_int ny)
488: {
489: struct screen *s = ctx->s;
490: struct grid_cell gc;
491: u_int cx, cy, px, py;
492:
493: cx = s->cx;
494: cy = s->cy;
495:
496: /*
497: * If the cursor is on, pick the area around the cursor, otherwise use
498: * the top left.
499: */
500: if (src->mode & MODE_CURSOR) {
501: px = src->cx;
502: if (px < nx / 3)
503: px = 0;
504: else
505: px = px - nx / 3;
506: if (px + nx > screen_size_x(src)) {
507: if (nx > screen_size_x(src))
508: px = 0;
509: else
510: px = screen_size_x(src) - nx;
511: }
512: py = src->cy;
513: if (py < ny / 3)
514: py = 0;
515: else
516: py = py - ny / 3;
517: if (py + ny > screen_size_y(src)) {
518: if (ny > screen_size_y(src))
519: py = 0;
520: else
521: py = screen_size_y(src) - ny;
522: }
523: } else {
524: px = 0;
525: py = 0;
526: }
527:
1.132 nicm 528: screen_write_fast_copy(ctx, src, px, src->grid->hsize + py, nx, ny);
1.125 nicm 529:
530: if (src->mode & MODE_CURSOR) {
531: grid_view_get_cell(src->grid, src->cx, src->cy, &gc);
532: gc.attr |= GRID_ATTR_REVERSE;
1.144 nicm 533: screen_write_set_cursor(ctx, cx + (src->cx - px),
1.125 nicm 534: cy + (src->cy - py));
535: screen_write_cell(ctx, &gc);
1.1 nicm 536: }
537: }
538:
1.17 nicm 539: /* Set up context for TTY command. */
1.87 nicm 540: static void
541: screen_write_initctx(struct screen_write_ctx *ctx, struct tty_ctx *ttyctx)
1.1 nicm 542: {
1.87 nicm 543: struct screen *s = ctx->s;
1.123 nicm 544:
545: memset(ttyctx, 0, sizeof *ttyctx);
1.1 nicm 546:
1.17 nicm 547: ttyctx->wp = ctx->wp;
1.1 nicm 548:
1.17 nicm 549: ttyctx->ocx = s->cx;
550: ttyctx->ocy = s->cy;
551:
552: ttyctx->orlower = s->rlower;
553: ttyctx->orupper = s->rupper;
1.87 nicm 554: }
1.31 nicm 555:
1.61 nicm 556: /* Set a mode. */
557: void
558: screen_write_mode_set(struct screen_write_ctx *ctx, int mode)
559: {
560: struct screen *s = ctx->s;
561:
562: s->mode |= mode;
563: }
564:
565: /* Clear a mode. */
566: void
567: screen_write_mode_clear(struct screen_write_ctx *ctx, int mode)
568: {
569: struct screen *s = ctx->s;
570:
571: s->mode &= ~mode;
572: }
573:
1.1 nicm 574: /* Cursor up by ny. */
575: void
576: screen_write_cursorup(struct screen_write_ctx *ctx, u_int ny)
577: {
578: struct screen *s = ctx->s;
1.139 nicm 579: u_int cx = s->cx, cy = s->cy;
1.1 nicm 580:
581: if (ny == 0)
582: ny = 1;
583:
1.139 nicm 584: if (cy < s->rupper) {
1.12 nicm 585: /* Above region. */
1.139 nicm 586: if (ny > cy)
587: ny = cy;
1.12 nicm 588: } else {
589: /* Below region. */
1.139 nicm 590: if (ny > cy - s->rupper)
591: ny = cy - s->rupper;
1.12 nicm 592: }
1.139 nicm 593: if (cx == screen_size_x(s))
594: cx--;
595:
596: cy -= ny;
1.1 nicm 597:
1.139 nicm 598: screen_write_set_cursor(ctx, cx, cy);
1.1 nicm 599: }
600:
601: /* Cursor down by ny. */
602: void
603: screen_write_cursordown(struct screen_write_ctx *ctx, u_int ny)
604: {
605: struct screen *s = ctx->s;
1.139 nicm 606: u_int cx = s->cx, cy = s->cy;
1.1 nicm 607:
608: if (ny == 0)
609: ny = 1;
610:
1.139 nicm 611: if (cy > s->rlower) {
1.12 nicm 612: /* Below region. */
1.139 nicm 613: if (ny > screen_size_y(s) - 1 - cy)
614: ny = screen_size_y(s) - 1 - cy;
1.12 nicm 615: } else {
616: /* Above region. */
1.139 nicm 617: if (ny > s->rlower - cy)
618: ny = s->rlower - cy;
1.12 nicm 619: }
1.139 nicm 620: if (cx == screen_size_x(s))
621: cx--;
622: else if (ny == 0)
1.1 nicm 623: return;
624:
1.139 nicm 625: cy += ny;
626:
627: screen_write_set_cursor(ctx, cx, cy);
1.1 nicm 628: }
629:
1.101 nicm 630: /* Cursor right by nx. */
1.1 nicm 631: void
632: screen_write_cursorright(struct screen_write_ctx *ctx, u_int nx)
633: {
634: struct screen *s = ctx->s;
1.139 nicm 635: u_int cx = s->cx, cy = s->cy;
1.1 nicm 636:
637: if (nx == 0)
638: nx = 1;
639:
1.139 nicm 640: if (nx > screen_size_x(s) - 1 - cx)
641: nx = screen_size_x(s) - 1 - cx;
1.1 nicm 642: if (nx == 0)
643: return;
644:
1.139 nicm 645: cx += nx;
646:
647: screen_write_set_cursor(ctx, cx, cy);
1.1 nicm 648: }
649:
650: /* Cursor left by nx. */
651: void
652: screen_write_cursorleft(struct screen_write_ctx *ctx, u_int nx)
653: {
654: struct screen *s = ctx->s;
1.139 nicm 655: u_int cx = s->cx, cy = s->cy;
1.1 nicm 656:
657: if (nx == 0)
658: nx = 1;
659:
1.139 nicm 660: if (nx > cx)
661: nx = cx;
1.1 nicm 662: if (nx == 0)
663: return;
664:
1.139 nicm 665: cx -= nx;
666:
667: screen_write_set_cursor(ctx, cx, cy);
1.5 nicm 668: }
669:
1.29 nicm 670: /* Backspace; cursor left unless at start of wrapped line when can move up. */
671: void
672: screen_write_backspace(struct screen_write_ctx *ctx)
673: {
674: struct screen *s = ctx->s;
675: struct grid_line *gl;
1.139 nicm 676: u_int cx = s->cx, cy = s->cy;
1.29 nicm 677:
1.139 nicm 678: if (cx == 0) {
679: if (cy == 0)
1.29 nicm 680: return;
1.139 nicm 681: gl = grid_get_line(s->grid, s->grid->hsize + cy - 1);
1.29 nicm 682: if (gl->flags & GRID_LINE_WRAPPED) {
1.139 nicm 683: cy--;
684: cx = screen_size_x(s) - 1;
1.29 nicm 685: }
686: } else
1.139 nicm 687: cx--;
688:
689: screen_write_set_cursor(ctx, cx, cy);
1.29 nicm 690: }
691:
1.5 nicm 692: /* VT100 alignment test. */
693: void
694: screen_write_alignmenttest(struct screen_write_ctx *ctx)
695: {
696: struct screen *s = ctx->s;
1.17 nicm 697: struct tty_ctx ttyctx;
1.5 nicm 698: struct grid_cell gc;
699: u_int xx, yy;
700:
701: memcpy(&gc, &grid_default_cell, sizeof gc);
1.77 nicm 702: utf8_set(&gc.data, 'E');
1.7 ray 703:
1.5 nicm 704: for (yy = 0; yy < screen_size_y(s); yy++) {
705: for (xx = 0; xx < screen_size_x(s); xx++)
706: grid_view_set_cell(s->grid, xx, yy, &gc);
707: }
1.7 ray 708:
1.139 nicm 709: screen_write_set_cursor(ctx, 0, 0);
1.5 nicm 710:
711: s->rupper = 0;
712: s->rlower = screen_size_y(s) - 1;
1.143 nicm 713:
714: screen_write_initctx(ctx, &ttyctx);
1.5 nicm 715:
1.109 nicm 716: screen_write_collect_clear(ctx, 0, screen_size_y(s) - 1);
1.17 nicm 717: tty_write(tty_cmd_alignmenttest, &ttyctx);
1.1 nicm 718: }
719:
720: /* Insert nx characters. */
721: void
1.99 nicm 722: screen_write_insertcharacter(struct screen_write_ctx *ctx, u_int nx, u_int bg)
1.1 nicm 723: {
724: struct screen *s = ctx->s;
1.17 nicm 725: struct tty_ctx ttyctx;
1.1 nicm 726:
727: if (nx == 0)
728: nx = 1;
729:
1.9 nicm 730: if (nx > screen_size_x(s) - s->cx)
731: nx = screen_size_x(s) - s->cx;
1.1 nicm 732: if (nx == 0)
733: return;
734:
1.107 nicm 735: if (s->cx > screen_size_x(s) - 1)
736: return;
737:
1.87 nicm 738: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 739: ttyctx.bg = bg;
1.1 nicm 740:
1.107 nicm 741: grid_view_insert_cells(s->grid, s->cx, s->cy, nx, bg);
1.1 nicm 742:
1.111 nicm 743: screen_write_collect_flush(ctx, 0);
1.17 nicm 744: ttyctx.num = nx;
745: tty_write(tty_cmd_insertcharacter, &ttyctx);
1.1 nicm 746: }
747:
748: /* Delete nx characters. */
749: void
1.99 nicm 750: screen_write_deletecharacter(struct screen_write_ctx *ctx, u_int nx, u_int bg)
1.1 nicm 751: {
752: struct screen *s = ctx->s;
1.17 nicm 753: struct tty_ctx ttyctx;
1.1 nicm 754:
755: if (nx == 0)
756: nx = 1;
757:
1.9 nicm 758: if (nx > screen_size_x(s) - s->cx)
759: nx = screen_size_x(s) - s->cx;
1.1 nicm 760: if (nx == 0)
761: return;
762:
1.107 nicm 763: if (s->cx > screen_size_x(s) - 1)
764: return;
765:
1.87 nicm 766: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 767: ttyctx.bg = bg;
1.1 nicm 768:
1.107 nicm 769: grid_view_delete_cells(s->grid, s->cx, s->cy, nx, bg);
1.1 nicm 770:
1.111 nicm 771: screen_write_collect_flush(ctx, 0);
1.17 nicm 772: ttyctx.num = nx;
773: tty_write(tty_cmd_deletecharacter, &ttyctx);
1.59 nicm 774: }
775:
776: /* Clear nx characters. */
777: void
1.121 nicm 778: screen_write_clearcharacter(struct screen_write_ctx *ctx, u_int nx, u_int bg)
1.59 nicm 779: {
780: struct screen *s = ctx->s;
781: struct tty_ctx ttyctx;
782:
783: if (nx == 0)
784: nx = 1;
785:
786: if (nx > screen_size_x(s) - s->cx)
787: nx = screen_size_x(s) - s->cx;
788: if (nx == 0)
789: return;
790:
1.107 nicm 791: if (s->cx > screen_size_x(s) - 1)
792: return;
793:
1.87 nicm 794: screen_write_initctx(ctx, &ttyctx);
1.121 nicm 795: ttyctx.bg = bg;
1.59 nicm 796:
1.124 nicm 797: grid_view_clear(s->grid, s->cx, s->cy, nx, 1, bg);
1.59 nicm 798:
1.111 nicm 799: screen_write_collect_flush(ctx, 0);
1.59 nicm 800: ttyctx.num = nx;
801: tty_write(tty_cmd_clearcharacter, &ttyctx);
1.1 nicm 802: }
803:
804: /* Insert ny lines. */
805: void
1.99 nicm 806: screen_write_insertline(struct screen_write_ctx *ctx, u_int ny, u_int bg)
1.1 nicm 807: {
808: struct screen *s = ctx->s;
1.107 nicm 809: struct grid *gd = s->grid;
1.17 nicm 810: struct tty_ctx ttyctx;
1.1 nicm 811:
812: if (ny == 0)
813: ny = 1;
814:
1.11 nicm 815: if (s->cy < s->rupper || s->cy > s->rlower) {
816: if (ny > screen_size_y(s) - s->cy)
817: ny = screen_size_y(s) - s->cy;
818: if (ny == 0)
819: return;
820:
1.87 nicm 821: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 822: ttyctx.bg = bg;
1.11 nicm 823:
1.107 nicm 824: grid_view_insert_lines(gd, s->cy, ny, bg);
1.11 nicm 825:
1.111 nicm 826: screen_write_collect_flush(ctx, 0);
1.17 nicm 827: ttyctx.num = ny;
828: tty_write(tty_cmd_insertline, &ttyctx);
1.11 nicm 829: return;
830: }
831:
832: if (ny > s->rlower + 1 - s->cy)
833: ny = s->rlower + 1 - s->cy;
1.1 nicm 834: if (ny == 0)
835: return;
1.41 nicm 836:
1.87 nicm 837: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 838: ttyctx.bg = bg;
1.1 nicm 839:
840: if (s->cy < s->rupper || s->cy > s->rlower)
1.107 nicm 841: grid_view_insert_lines(gd, s->cy, ny, bg);
842: else
843: grid_view_insert_lines_region(gd, s->rlower, s->cy, ny, bg);
1.1 nicm 844:
1.111 nicm 845: screen_write_collect_flush(ctx, 0);
1.17 nicm 846: ttyctx.num = ny;
847: tty_write(tty_cmd_insertline, &ttyctx);
1.1 nicm 848: }
849:
850: /* Delete ny lines. */
851: void
1.99 nicm 852: screen_write_deleteline(struct screen_write_ctx *ctx, u_int ny, u_int bg)
1.1 nicm 853: {
854: struct screen *s = ctx->s;
1.107 nicm 855: struct grid *gd = s->grid;
1.17 nicm 856: struct tty_ctx ttyctx;
1.1 nicm 857:
858: if (ny == 0)
859: ny = 1;
860:
1.11 nicm 861: if (s->cy < s->rupper || s->cy > s->rlower) {
862: if (ny > screen_size_y(s) - s->cy)
863: ny = screen_size_y(s) - s->cy;
864: if (ny == 0)
865: return;
866:
1.87 nicm 867: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 868: ttyctx.bg = bg;
1.11 nicm 869:
1.107 nicm 870: grid_view_delete_lines(gd, s->cy, ny, bg);
1.11 nicm 871:
1.111 nicm 872: screen_write_collect_flush(ctx, 0);
1.17 nicm 873: ttyctx.num = ny;
874: tty_write(tty_cmd_deleteline, &ttyctx);
1.11 nicm 875: return;
876: }
1.41 nicm 877:
1.11 nicm 878: if (ny > s->rlower + 1 - s->cy)
879: ny = s->rlower + 1 - s->cy;
1.1 nicm 880: if (ny == 0)
881: return;
882:
1.87 nicm 883: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 884: ttyctx.bg = bg;
1.1 nicm 885:
886: if (s->cy < s->rupper || s->cy > s->rlower)
1.107 nicm 887: grid_view_delete_lines(gd, s->cy, ny, bg);
888: else
889: grid_view_delete_lines_region(gd, s->rlower, s->cy, ny, bg);
1.1 nicm 890:
1.111 nicm 891: screen_write_collect_flush(ctx, 0);
1.17 nicm 892: ttyctx.num = ny;
893: tty_write(tty_cmd_deleteline, &ttyctx);
1.1 nicm 894: }
895:
896: /* Clear line at cursor. */
897: void
1.99 nicm 898: screen_write_clearline(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 899: {
1.92 nicm 900: struct screen *s = ctx->s;
901: struct grid_line *gl;
902: struct tty_ctx ttyctx;
903: u_int sx = screen_size_x(s);
1.1 nicm 904:
1.137 nicm 905: gl = grid_get_line(s->grid, s->grid->hsize + s->cy);
1.140 nicm 906: if (gl->cellsize == 0 && COLOUR_DEFAULT(bg))
1.92 nicm 907: return;
1.1 nicm 908:
1.108 nicm 909: screen_write_initctx(ctx, &ttyctx);
910: ttyctx.bg = bg;
911:
1.99 nicm 912: grid_view_clear(s->grid, 0, s->cy, sx, 1, bg);
913:
1.109 nicm 914: screen_write_collect_clear(ctx, s->cy, 1);
1.114 nicm 915: screen_write_collect_flush(ctx, 0);
1.17 nicm 916: tty_write(tty_cmd_clearline, &ttyctx);
1.1 nicm 917: }
918:
919: /* Clear to end of line from cursor. */
920: void
1.99 nicm 921: screen_write_clearendofline(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 922: {
1.92 nicm 923: struct screen *s = ctx->s;
924: struct grid_line *gl;
925: struct tty_ctx ttyctx;
926: u_int sx = screen_size_x(s);
1.1 nicm 927:
1.137 nicm 928: gl = grid_get_line(s->grid, s->grid->hsize + s->cy);
1.140 nicm 929: if (s->cx > sx - 1 || (s->cx >= gl->cellsize && COLOUR_DEFAULT(bg)))
1.92 nicm 930: return;
1.108 nicm 931:
932: screen_write_initctx(ctx, &ttyctx);
933: ttyctx.bg = bg;
1.1 nicm 934:
1.99 nicm 935: grid_view_clear(s->grid, s->cx, s->cy, sx - s->cx, 1, bg);
936:
1.109 nicm 937: if (s->cx == 0)
938: screen_write_collect_clear(ctx, s->cy, 1);
1.114 nicm 939: screen_write_collect_flush(ctx, 0);
1.41 nicm 940: tty_write(tty_cmd_clearendofline, &ttyctx);
1.1 nicm 941: }
942:
943: /* Clear to start of line from cursor. */
944: void
1.99 nicm 945: screen_write_clearstartofline(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 946: {
947: struct screen *s = ctx->s;
1.17 nicm 948: struct tty_ctx ttyctx;
1.92 nicm 949: u_int sx = screen_size_x(s);
1.1 nicm 950:
1.87 nicm 951: screen_write_initctx(ctx, &ttyctx);
1.99 nicm 952: ttyctx.bg = bg;
1.1 nicm 953:
1.109 nicm 954: if (s->cx > sx - 1)
1.99 nicm 955: grid_view_clear(s->grid, 0, s->cy, sx, 1, bg);
1.109 nicm 956: else
1.99 nicm 957: grid_view_clear(s->grid, 0, s->cy, s->cx + 1, 1, bg);
1.1 nicm 958:
1.109 nicm 959: if (s->cx > sx - 1)
960: screen_write_collect_clear(ctx, s->cy, 1);
1.114 nicm 961: screen_write_collect_flush(ctx, 0);
1.17 nicm 962: tty_write(tty_cmd_clearstartofline, &ttyctx);
1.1 nicm 963: }
964:
1.101 nicm 965: /* Move cursor to px,py. */
1.1 nicm 966: void
1.147 nicm 967: screen_write_cursormove(struct screen_write_ctx *ctx, int px, int py,
968: int origin)
1.1 nicm 969: {
970: struct screen *s = ctx->s;
971:
1.147 nicm 972: if (origin && py != -1 && (s->mode & MODE_ORIGIN)) {
1.146 nicm 973: if ((u_int)py > s->rlower - s->rupper)
1.144 nicm 974: py = s->rlower;
975: else
976: py += s->rupper;
977: }
1.145 nicm 978:
1.146 nicm 979: if (px != -1 && (u_int)px > screen_size_x(s) - 1)
1.145 nicm 980: px = screen_size_x(s) - 1;
1.146 nicm 981: if (py != -1 && (u_int)py > screen_size_y(s) - 1)
1.145 nicm 982: py = screen_size_y(s) - 1;
1.1 nicm 983:
1.139 nicm 984: screen_write_set_cursor(ctx, px, py);
1.1 nicm 985: }
986:
1.101 nicm 987: /* Reverse index (up with scroll). */
1.1 nicm 988: void
1.122 nicm 989: screen_write_reverseindex(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 990: {
991: struct screen *s = ctx->s;
1.17 nicm 992: struct tty_ctx ttyctx;
1.1 nicm 993:
1.87 nicm 994: screen_write_initctx(ctx, &ttyctx);
1.122 nicm 995: ttyctx.bg = bg;
1.1 nicm 996:
1.109 nicm 997: if (s->cy == s->rupper)
1.122 nicm 998: grid_view_scroll_region_down(s->grid, s->rupper, s->rlower, bg);
1.109 nicm 999: else if (s->cy > 0)
1.139 nicm 1000: screen_write_set_cursor(ctx, -1, s->cy - 1);
1.1 nicm 1001:
1.111 nicm 1002: screen_write_collect_flush(ctx, 0);
1.17 nicm 1003: tty_write(tty_cmd_reverseindex, &ttyctx);
1.1 nicm 1004: }
1005:
1006: /* Set scroll region. */
1007: void
1.83 nicm 1008: screen_write_scrollregion(struct screen_write_ctx *ctx, u_int rupper,
1009: u_int rlower)
1.1 nicm 1010: {
1011: struct screen *s = ctx->s;
1012:
1013: if (rupper > screen_size_y(s) - 1)
1014: rupper = screen_size_y(s) - 1;
1015: if (rlower > screen_size_y(s) - 1)
1016: rlower = screen_size_y(s) - 1;
1.13 nicm 1017: if (rupper >= rlower) /* cannot be one line */
1.1 nicm 1018: return;
1019:
1.111 nicm 1020: screen_write_collect_flush(ctx, 0);
1.110 nicm 1021:
1.1 nicm 1022: /* Cursor moves to top-left. */
1.139 nicm 1023: screen_write_set_cursor(ctx, 0, 0);
1.1 nicm 1024:
1025: s->rupper = rupper;
1026: s->rlower = rlower;
1027: }
1028:
1.34 nicm 1029: /* Line feed. */
1.1 nicm 1030: void
1.122 nicm 1031: screen_write_linefeed(struct screen_write_ctx *ctx, int wrapped, u_int bg)
1.1 nicm 1032: {
1.20 nicm 1033: struct screen *s = ctx->s;
1.109 nicm 1034: struct grid *gd = s->grid;
1.20 nicm 1035: struct grid_line *gl;
1.1 nicm 1036:
1.137 nicm 1037: gl = grid_get_line(gd, gd->hsize + s->cy);
1.20 nicm 1038: if (wrapped)
1039: gl->flags |= GRID_LINE_WRAPPED;
1.73 nicm 1040: else
1041: gl->flags &= ~GRID_LINE_WRAPPED;
1.20 nicm 1042:
1.114 nicm 1043: log_debug("%s: at %u,%u (region %u-%u)", __func__, s->cx, s->cy,
1044: s->rupper, s->rlower);
1045:
1.122 nicm 1046: if (bg != ctx->bg) {
1047: screen_write_collect_flush(ctx, 1);
1048: ctx->bg = bg;
1049: }
1050:
1.92 nicm 1051: if (s->cy == s->rlower) {
1.122 nicm 1052: grid_view_scroll_region_up(gd, s->rupper, s->rlower, bg);
1.109 nicm 1053: screen_write_collect_scroll(ctx);
1.110 nicm 1054: ctx->scrolled++;
1.109 nicm 1055: } else if (s->cy < screen_size_y(s) - 1)
1.139 nicm 1056: screen_write_set_cursor(ctx, -1, s->cy + 1);
1.1 nicm 1057: }
1058:
1.110 nicm 1059: /* Scroll up. */
1060: void
1.122 nicm 1061: screen_write_scrollup(struct screen_write_ctx *ctx, u_int lines, u_int bg)
1.110 nicm 1062: {
1063: struct screen *s = ctx->s;
1064: struct grid *gd = s->grid;
1065: u_int i;
1066:
1067: if (lines == 0)
1068: lines = 1;
1069: else if (lines > s->rlower - s->rupper + 1)
1070: lines = s->rlower - s->rupper + 1;
1071:
1.122 nicm 1072: if (bg != ctx->bg) {
1073: screen_write_collect_flush(ctx, 1);
1074: ctx->bg = bg;
1075: }
1076:
1.110 nicm 1077: for (i = 0; i < lines; i++) {
1.122 nicm 1078: grid_view_scroll_region_up(gd, s->rupper, s->rlower, bg);
1.110 nicm 1079: screen_write_collect_scroll(ctx);
1080: }
1081: ctx->scrolled += lines;
1082: }
1083:
1.1 nicm 1084: /* Carriage return (cursor to start of line). */
1085: void
1086: screen_write_carriagereturn(struct screen_write_ctx *ctx)
1087: {
1.139 nicm 1088: screen_write_set_cursor(ctx, 0, -1);
1.1 nicm 1089: }
1090:
1091: /* Clear to end of screen from cursor. */
1092: void
1.99 nicm 1093: screen_write_clearendofscreen(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1094: {
1095: struct screen *s = ctx->s;
1.107 nicm 1096: struct grid *gd = s->grid;
1.17 nicm 1097: struct tty_ctx ttyctx;
1.92 nicm 1098: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.1 nicm 1099:
1.87 nicm 1100: screen_write_initctx(ctx, &ttyctx);
1.99 nicm 1101: ttyctx.bg = bg;
1.1 nicm 1102:
1.46 nicm 1103: /* Scroll into history if it is enabled and clearing entire screen. */
1.109 nicm 1104: if (s->cx == 0 && s->cy == 0 && (gd->flags & GRID_HISTORY))
1.107 nicm 1105: grid_view_clear_history(gd, bg);
1.109 nicm 1106: else {
1107: if (s->cx <= sx - 1)
1.107 nicm 1108: grid_view_clear(gd, s->cx, s->cy, sx - s->cx, 1, bg);
1109: grid_view_clear(gd, 0, s->cy + 1, sx, sy - (s->cy + 1), bg);
1.46 nicm 1110: }
1.1 nicm 1111:
1.109 nicm 1112: screen_write_collect_clear(ctx, s->cy + 1, sy - (s->cy + 1));
1.111 nicm 1113: screen_write_collect_flush(ctx, 0);
1.17 nicm 1114: tty_write(tty_cmd_clearendofscreen, &ttyctx);
1.1 nicm 1115: }
1116:
1117: /* Clear to start of screen. */
1118: void
1.105 nicm 1119: screen_write_clearstartofscreen(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1120: {
1121: struct screen *s = ctx->s;
1.17 nicm 1122: struct tty_ctx ttyctx;
1.92 nicm 1123: u_int sx = screen_size_x(s);
1.1 nicm 1124:
1.87 nicm 1125: screen_write_initctx(ctx, &ttyctx);
1.105 nicm 1126: ttyctx.bg = bg;
1.1 nicm 1127:
1.109 nicm 1128: if (s->cy > 0)
1.105 nicm 1129: grid_view_clear(s->grid, 0, 0, sx, s->cy, bg);
1.109 nicm 1130: if (s->cx > sx - 1)
1.120 nicm 1131: grid_view_clear(s->grid, 0, s->cy, sx, 1, bg);
1.109 nicm 1132: else
1.120 nicm 1133: grid_view_clear(s->grid, 0, s->cy, s->cx + 1, 1, bg);
1.1 nicm 1134:
1.109 nicm 1135: screen_write_collect_clear(ctx, 0, s->cy);
1.111 nicm 1136: screen_write_collect_flush(ctx, 0);
1.17 nicm 1137: tty_write(tty_cmd_clearstartofscreen, &ttyctx);
1.1 nicm 1138: }
1139:
1140: /* Clear entire screen. */
1141: void
1.99 nicm 1142: screen_write_clearscreen(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1143: {
1144: struct screen *s = ctx->s;
1.17 nicm 1145: struct tty_ctx ttyctx;
1.92 nicm 1146: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.1 nicm 1147:
1.87 nicm 1148: screen_write_initctx(ctx, &ttyctx);
1.99 nicm 1149: ttyctx.bg = bg;
1.1 nicm 1150:
1.46 nicm 1151: /* Scroll into history if it is enabled. */
1152: if (s->grid->flags & GRID_HISTORY)
1.99 nicm 1153: grid_view_clear_history(s->grid, bg);
1.83 nicm 1154: else
1.99 nicm 1155: grid_view_clear(s->grid, 0, 0, sx, sy, bg);
1.1 nicm 1156:
1.109 nicm 1157: screen_write_collect_clear(ctx, 0, sy);
1.17 nicm 1158: tty_write(tty_cmd_clearscreen, &ttyctx);
1.51 nicm 1159: }
1160:
1161: /* Clear entire history. */
1162: void
1163: screen_write_clearhistory(struct screen_write_ctx *ctx)
1164: {
1165: struct screen *s = ctx->s;
1166: struct grid *gd = s->grid;
1167:
1.99 nicm 1168: grid_move_lines(gd, 0, gd->hsize, gd->sy, 8);
1.93 nicm 1169: gd->hscrolled = gd->hsize = 0;
1.1 nicm 1170: }
1171:
1.109 nicm 1172: /* Clear a collected line. */
1173: static void
1174: screen_write_collect_clear(struct screen_write_ctx *ctx, u_int y, u_int n)
1175: {
1176: struct screen_write_collect_item *ci, *tmp;
1177: u_int i;
1178: size_t size;
1179:
1.151 nicm 1180: for (i = y; i < y + n; i++) {
1.109 nicm 1181: if (TAILQ_EMPTY(&ctx->list[i].items))
1182: continue;
1183: size = 0;
1184: TAILQ_FOREACH_SAFE(ci, &ctx->list[i].items, entry, tmp) {
1185: size += ci->used;
1186: TAILQ_REMOVE(&ctx->list[i].items, ci, entry);
1187: free(ci);
1188: }
1189: ctx->skipped += size;
1.114 nicm 1190: log_debug("%s: dropped %zu bytes (line %u)", __func__, size, i);
1.109 nicm 1191: }
1192: }
1193:
1194: /* Scroll collected lines up. */
1195: static void
1196: screen_write_collect_scroll(struct screen_write_ctx *ctx)
1197: {
1198: struct screen *s = ctx->s;
1199: struct screen_write_collect_line *cl;
1200: u_int y;
1201:
1.114 nicm 1202: log_debug("%s: at %u,%u (region %u-%u)", __func__, s->cx, s->cy,
1203: s->rupper, s->rlower);
1204:
1.109 nicm 1205: screen_write_collect_clear(ctx, s->rupper, 1);
1206: for (y = s->rupper; y < s->rlower; y++) {
1207: cl = &ctx->list[y + 1];
1208: TAILQ_CONCAT(&ctx->list[y].items, &cl->items, entry);
1209: TAILQ_INIT(&cl->items);
1210: }
1211: }
1212:
1213: /* Flush collected lines. */
1214: static void
1.111 nicm 1215: screen_write_collect_flush(struct screen_write_ctx *ctx, int scroll_only)
1.109 nicm 1216: {
1217: struct screen *s = ctx->s;
1218: struct screen_write_collect_item *ci, *tmp;
1.116 nicm 1219: u_int y, cx, cy, items = 0;
1.109 nicm 1220: struct tty_ctx ttyctx;
1.116 nicm 1221: size_t written = 0;
1.110 nicm 1222:
1223: if (ctx->scrolled != 0) {
1224: log_debug("%s: scrolled %u (region %u-%u)", __func__,
1225: ctx->scrolled, s->rupper, s->rlower);
1226: if (ctx->scrolled > s->rlower - s->rupper + 1)
1227: ctx->scrolled = s->rlower - s->rupper + 1;
1228:
1229: screen_write_initctx(ctx, &ttyctx);
1230: ttyctx.num = ctx->scrolled;
1.122 nicm 1231: ttyctx.bg = ctx->bg;
1.110 nicm 1232: tty_write(tty_cmd_scrollup, &ttyctx);
1233: }
1234: ctx->scrolled = 0;
1.122 nicm 1235: ctx->bg = 8;
1236:
1.111 nicm 1237: if (scroll_only)
1238: return;
1.109 nicm 1239:
1240: cx = s->cx; cy = s->cy;
1241: for (y = 0; y < screen_size_y(s); y++) {
1242: TAILQ_FOREACH_SAFE(ci, &ctx->list[y].items, entry, tmp) {
1.144 nicm 1243: screen_write_set_cursor(ctx, ci->x, y);
1.109 nicm 1244: screen_write_initctx(ctx, &ttyctx);
1245: ttyctx.cell = &ci->gc;
1.118 nicm 1246: ttyctx.wrapped = ci->wrapped;
1.109 nicm 1247: ttyctx.ptr = ci->data;
1248: ttyctx.num = ci->used;
1249: tty_write(tty_cmd_cells, &ttyctx);
1.116 nicm 1250:
1251: items++;
1252: written += ci->used;
1.109 nicm 1253:
1254: TAILQ_REMOVE(&ctx->list[y].items, ci, entry);
1255: free(ci);
1256: }
1257: }
1258: s->cx = cx; s->cy = cy;
1.116 nicm 1259:
1260: log_debug("%s: flushed %u items (%zu bytes)", __func__, items, written);
1261: ctx->written += written;
1.109 nicm 1262: }
1263:
1264: /* Finish and store collected cells. */
1265: void
1266: screen_write_collect_end(struct screen_write_ctx *ctx)
1267: {
1268: struct screen *s = ctx->s;
1269: struct screen_write_collect_item *ci = ctx->item;
1270: struct grid_cell gc;
1.131 nicm 1271: u_int xx;
1.109 nicm 1272:
1273: if (ci->used == 0)
1274: return;
1275: ci->data[ci->used] = '\0';
1276:
1277: ci->x = s->cx;
1278: TAILQ_INSERT_TAIL(&ctx->list[s->cy].items, ci, entry);
1279: ctx->item = xcalloc(1, sizeof *ctx->item);
1280:
1281: log_debug("%s: %u %s (at %u,%u)", __func__, ci->used, ci->data, s->cx,
1282: s->cy);
1283:
1.131 nicm 1284: if (s->cx != 0) {
1285: for (xx = s->cx; xx > 0; xx--) {
1286: grid_view_get_cell(s->grid, xx, s->cy, &gc);
1287: if (~gc.flags & GRID_FLAG_PADDING)
1288: break;
1.136 nicm 1289: grid_view_set_cell(s->grid, xx, s->cy,
1290: &grid_default_cell);
1.131 nicm 1291: }
1.139 nicm 1292: if (gc.data.width > 1) {
1.136 nicm 1293: grid_view_set_cell(s->grid, xx, s->cy,
1294: &grid_default_cell);
1.139 nicm 1295: }
1.131 nicm 1296: }
1297:
1.109 nicm 1298: memcpy(&gc, &ci->gc, sizeof gc);
1299: grid_view_set_cells(s->grid, s->cx, s->cy, &gc, ci->data, ci->used);
1.139 nicm 1300: screen_write_set_cursor(ctx, s->cx + ci->used, -1);
1.131 nicm 1301:
1302: for (xx = s->cx; xx < screen_size_x(s); xx++) {
1303: grid_view_get_cell(s->grid, xx, s->cy, &gc);
1304: if (~gc.flags & GRID_FLAG_PADDING)
1305: break;
1306: grid_view_set_cell(s->grid, xx, s->cy, &grid_default_cell);
1307: }
1.109 nicm 1308: }
1309:
1310: /* Write cell data, collecting if necessary. */
1311: void
1312: screen_write_collect_add(struct screen_write_ctx *ctx,
1313: const struct grid_cell *gc)
1314: {
1315: struct screen *s = ctx->s;
1316: struct screen_write_collect_item *ci;
1317: u_int sx = screen_size_x(s);
1318: int collect;
1319:
1320: /*
1321: * Don't need to check that the attributes and whatnot are still the
1.116 nicm 1322: * same - input_parse will end the collection when anything that isn't
1323: * a plain character is encountered. Also nothing should make it here
1324: * that isn't a single ASCII character.
1.109 nicm 1325: */
1326:
1327: collect = 1;
1.136 nicm 1328: if (gc->data.width != 1 || gc->data.size != 1 || *gc->data.data >= 0x7f)
1.109 nicm 1329: collect = 0;
1330: else if (gc->attr & GRID_ATTR_CHARSET)
1331: collect = 0;
1332: else if (~s->mode & MODE_WRAP)
1333: collect = 0;
1334: else if (s->mode & MODE_INSERT)
1335: collect = 0;
1.138 nicm 1336: else if (s->sel != NULL)
1.109 nicm 1337: collect = 0;
1338: if (!collect) {
1339: screen_write_collect_end(ctx);
1.116 nicm 1340: screen_write_collect_flush(ctx, 0);
1.109 nicm 1341: screen_write_cell(ctx, gc);
1342: return;
1343: }
1344: ctx->cells++;
1345:
1346: if (s->cx > sx - 1 || ctx->item->used > sx - 1 - s->cx)
1347: screen_write_collect_end(ctx);
1.118 nicm 1348: ci = ctx->item; /* may have changed */
1349:
1.109 nicm 1350: if (s->cx > sx - 1) {
1.114 nicm 1351: log_debug("%s: wrapped at %u,%u", __func__, s->cx, s->cy);
1.118 nicm 1352: ci->wrapped = 1;
1.122 nicm 1353: screen_write_linefeed(ctx, 1, 8);
1.139 nicm 1354: screen_write_set_cursor(ctx, 0, -1);
1.109 nicm 1355: }
1356:
1357: if (ci->used == 0)
1358: memcpy(&ci->gc, gc, sizeof ci->gc);
1359: ci->data[ci->used++] = gc->data.data[0];
1360: if (ci->used == (sizeof ci->data) - 1)
1361: screen_write_collect_end(ctx);
1362: }
1363:
1.1 nicm 1364: /* Write cell data. */
1365: void
1.60 nicm 1366: screen_write_cell(struct screen_write_ctx *ctx, const struct grid_cell *gc)
1.1 nicm 1367: {
1368: struct screen *s = ctx->s;
1369: struct grid *gd = s->grid;
1.109 nicm 1370: struct grid_line *gl;
1371: struct grid_cell_entry *gce;
1372: struct grid_cell tmp_gc, now_gc;
1.15 nicm 1373: struct tty_ctx ttyctx;
1.92 nicm 1374: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.115 nicm 1375: u_int width = gc->data.width, xx, last, cx, cy;
1.109 nicm 1376: int selected, skip = 1;
1.1 nicm 1377:
1.109 nicm 1378: /* Ignore padding cells. */
1.1 nicm 1379: if (gc->flags & GRID_FLAG_PADDING)
1380: return;
1.109 nicm 1381: ctx->cells++;
1.32 nicm 1382:
1.109 nicm 1383: /* If the width is zero, combine onto the previous character. */
1.1 nicm 1384: if (width == 0) {
1.112 nicm 1385: screen_write_collect_flush(ctx, 0);
1.104 nicm 1386: if ((gc = screen_write_combine(ctx, &gc->data, &xx)) != 0) {
1.115 nicm 1387: cx = s->cx; cy = s->cy;
1.144 nicm 1388: screen_write_set_cursor(ctx, xx, s->cy);
1.87 nicm 1389: screen_write_initctx(ctx, &ttyctx);
1.104 nicm 1390: ttyctx.cell = gc;
1391: tty_write(tty_cmd_cell, &ttyctx);
1.115 nicm 1392: s->cx = cx; s->cy = cy;
1.1 nicm 1393: }
1394: return;
1395: }
1.112 nicm 1396:
1397: /* Flush any existing scrolling. */
1398: screen_write_collect_flush(ctx, 1);
1.1 nicm 1399:
1.109 nicm 1400: /* If this character doesn't fit, ignore it. */
1401: if ((~s->mode & MODE_WRAP) &&
1402: width > 1 &&
1403: (width > sx || (s->cx != sx && s->cx > sx - width)))
1404: return;
1405:
1.6 nicm 1406: /* If in insert mode, make space for the cells. */
1.98 nicm 1407: if (s->mode & MODE_INSERT) {
1.109 nicm 1408: grid_view_insert_cells(s->grid, s->cx, s->cy, width, 8);
1409: skip = 0;
1410: }
1.6 nicm 1411:
1.20 nicm 1412: /* Check this will fit on the current line and wrap if not. */
1.92 nicm 1413: if ((s->mode & MODE_WRAP) && s->cx > sx - width) {
1.128 nicm 1414: log_debug("%s: wrapped at %u,%u", __func__, s->cx, s->cy);
1.122 nicm 1415: screen_write_linefeed(ctx, 1, 8);
1.139 nicm 1416: screen_write_set_cursor(ctx, 0, -1);
1.128 nicm 1417: screen_write_collect_flush(ctx, 1);
1.1 nicm 1418: }
1419:
1.64 nicm 1420: /* Sanity check cursor position. */
1.92 nicm 1421: if (s->cx > sx - width || s->cy > sy - 1)
1.1 nicm 1422: return;
1.106 nicm 1423: screen_write_initctx(ctx, &ttyctx);
1424:
1.1 nicm 1425: /* Handle overwriting of UTF-8 characters. */
1.137 nicm 1426: gl = grid_get_line(s->grid, s->grid->hsize + s->cy);
1.92 nicm 1427: if (gl->flags & GRID_LINE_EXTENDED) {
1428: grid_view_get_cell(gd, s->cx, s->cy, &now_gc);
1429: if (screen_write_overwrite(ctx, &now_gc, width))
1430: skip = 0;
1431: }
1.1 nicm 1432:
1433: /*
1434: * If the new character is UTF-8 wide, fill in padding cells. Have
1435: * already ensured there is enough room.
1436: */
1.89 nicm 1437: for (xx = s->cx + 1; xx < s->cx + width; xx++) {
1.131 nicm 1438: log_debug("%s: new padding at %u,%u", __func__, xx, s->cy);
1.88 nicm 1439: grid_view_set_cell(gd, xx, s->cy, &screen_write_pad_cell);
1.89 nicm 1440: skip = 0;
1441: }
1442:
1443: /* If no change, do not draw. */
1.92 nicm 1444: if (skip) {
1445: if (s->cx >= gl->cellsize)
1446: skip = grid_cells_equal(gc, &grid_default_cell);
1447: else {
1448: gce = &gl->celldata[s->cx];
1449: if (gce->flags & GRID_FLAG_EXTENDED)
1450: skip = 0;
1.95 nicm 1451: else if (gc->flags != gce->flags)
1.92 nicm 1452: skip = 0;
1453: else if (gc->attr != gce->data.attr)
1454: skip = 0;
1455: else if (gc->fg != gce->data.fg)
1456: skip = 0;
1457: else if (gc->bg != gce->data.bg)
1458: skip = 0;
1.95 nicm 1459: else if (gc->data.width != 1)
1460: skip = 0;
1.109 nicm 1461: else if (gc->data.size != 1)
1462: skip = 0;
1.95 nicm 1463: else if (gce->data.data != gc->data.data[0])
1.92 nicm 1464: skip = 0;
1465: }
1466: }
1.1 nicm 1467:
1.127 nicm 1468: /* Update the selected flag and set the cell. */
1.90 nicm 1469: selected = screen_check_selection(s, s->cx, s->cy);
1.109 nicm 1470: if (selected && (~gc->flags & GRID_FLAG_SELECTED)) {
1.90 nicm 1471: memcpy(&tmp_gc, gc, sizeof tmp_gc);
1472: tmp_gc.flags |= GRID_FLAG_SELECTED;
1473: grid_view_set_cell(gd, s->cx, s->cy, &tmp_gc);
1.109 nicm 1474: } else if (!selected && (gc->flags & GRID_FLAG_SELECTED)) {
1.90 nicm 1475: memcpy(&tmp_gc, gc, sizeof tmp_gc);
1476: tmp_gc.flags &= ~GRID_FLAG_SELECTED;
1477: grid_view_set_cell(gd, s->cx, s->cy, &tmp_gc);
1478: } else if (!skip)
1.89 nicm 1479: grid_view_set_cell(gd, s->cx, s->cy, gc);
1.109 nicm 1480: if (selected)
1481: skip = 0;
1.1 nicm 1482:
1.64 nicm 1483: /*
1484: * Move the cursor. If not wrapping, stick at the last character and
1485: * replace it.
1486: */
1.65 nicm 1487: last = !(s->mode & MODE_WRAP);
1.92 nicm 1488: if (s->cx <= sx - last - width)
1.139 nicm 1489: screen_write_set_cursor(ctx, s->cx + width, -1);
1.64 nicm 1490: else
1.139 nicm 1491: screen_write_set_cursor(ctx, sx - last, -1);
1.1 nicm 1492:
1.89 nicm 1493: /* Create space for character in insert mode. */
1.109 nicm 1494: if (s->mode & MODE_INSERT) {
1.113 nicm 1495: screen_write_collect_flush(ctx, 0);
1.17 nicm 1496: ttyctx.num = width;
1497: tty_write(tty_cmd_insertcharacter, &ttyctx);
1498: }
1.89 nicm 1499:
1500: /* Write to the screen. */
1.109 nicm 1501: if (!skip) {
1502: if (selected) {
1503: screen_select_cell(s, &tmp_gc, gc);
1504: ttyctx.cell = &tmp_gc;
1505: } else
1506: ttyctx.cell = gc;
1.16 nicm 1507: tty_write(tty_cmd_cell, &ttyctx);
1.92 nicm 1508: ctx->written++;
1509: } else
1510: ctx->skipped++;
1.35 nicm 1511: }
1512:
1513: /* Combine a UTF-8 zero-width character onto the previous. */
1.104 nicm 1514: static const struct grid_cell *
1515: screen_write_combine(struct screen_write_ctx *ctx, const struct utf8_data *ud,
1516: u_int *xx)
1.35 nicm 1517: {
1518: struct screen *s = ctx->s;
1519: struct grid *gd = s->grid;
1.104 nicm 1520: static struct grid_cell gc;
1521: u_int n;
1.35 nicm 1522:
1523: /* Can't combine if at 0. */
1524: if (s->cx == 0)
1.104 nicm 1525: return (NULL);
1.35 nicm 1526:
1.60 nicm 1527: /* Empty data is out. */
1528: if (ud->size == 0)
1.37 nicm 1529: fatalx("UTF-8 data empty");
1530:
1.60 nicm 1531: /* Retrieve the previous cell. */
1.119 nicm 1532: for (n = 1; n <= s->cx; n++) {
1.104 nicm 1533: grid_view_get_cell(gd, s->cx - n, s->cy, &gc);
1534: if (~gc.flags & GRID_FLAG_PADDING)
1535: break;
1536: }
1.119 nicm 1537: if (n > s->cx)
1.104 nicm 1538: return (NULL);
1539: *xx = s->cx - n;
1.35 nicm 1540:
1.60 nicm 1541: /* Check there is enough space. */
1.77 nicm 1542: if (gc.data.size + ud->size > sizeof gc.data.data)
1.104 nicm 1543: return (NULL);
1544:
1545: log_debug("%s: %.*s onto %.*s at %u,%u", __func__, (int)ud->size,
1546: ud->data, (int)gc.data.size, gc.data.data, *xx, s->cy);
1.35 nicm 1547:
1.77 nicm 1548: /* Append the data. */
1549: memcpy(gc.data.data + gc.data.size, ud->data, ud->size);
1550: gc.data.size += ud->size;
1551:
1552: /* Set the new cell. */
1.104 nicm 1553: grid_view_set_cell(gd, *xx, s->cy, &gc);
1.35 nicm 1554:
1.104 nicm 1555: return (&gc);
1.1 nicm 1556: }
1557:
1558: /*
1559: * UTF-8 wide characters are a bit of an annoyance. They take up more than one
1560: * cell on the screen, so following cells must not be drawn by marking them as
1561: * padding.
1562: *
1563: * So far, so good. The problem is, when overwriting a padding cell, or a UTF-8
1564: * character, it is necessary to also overwrite any other cells which covered
1565: * by the same character.
1566: */
1.89 nicm 1567: static int
1568: screen_write_overwrite(struct screen_write_ctx *ctx, struct grid_cell *gc,
1569: u_int width)
1.1 nicm 1570: {
1571: struct screen *s = ctx->s;
1572: struct grid *gd = s->grid;
1.89 nicm 1573: struct grid_cell tmp_gc;
1.1 nicm 1574: u_int xx;
1.89 nicm 1575: int done = 0;
1.1 nicm 1576:
1.89 nicm 1577: if (gc->flags & GRID_FLAG_PADDING) {
1.1 nicm 1578: /*
1579: * A padding cell, so clear any following and leading padding
1580: * cells back to the character. Don't overwrite the current
1581: * cell as that happens later anyway.
1582: */
1583: xx = s->cx + 1;
1584: while (--xx > 0) {
1.89 nicm 1585: grid_view_get_cell(gd, xx, s->cy, &tmp_gc);
1586: if (~tmp_gc.flags & GRID_FLAG_PADDING)
1.1 nicm 1587: break;
1.131 nicm 1588: log_debug("%s: padding at %u,%u", __func__, xx, s->cy);
1.1 nicm 1589: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
1590: }
1591:
1592: /* Overwrite the character at the start of this padding. */
1.131 nicm 1593: log_debug("%s: character at %u,%u", __func__, xx, s->cy);
1.1 nicm 1594: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
1.89 nicm 1595: done = 1;
1.43 nicm 1596: }
1.1 nicm 1597:
1.43 nicm 1598: /*
1.95 nicm 1599: * Overwrite any padding cells that belong to any UTF-8 characters
1600: * we'll be overwriting with the current character.
1.43 nicm 1601: */
1.95 nicm 1602: if (width != 1 ||
1603: gc->data.width != 1 ||
1604: gc->flags & GRID_FLAG_PADDING) {
1.89 nicm 1605: xx = s->cx + width - 1;
1606: while (++xx < screen_size_x(s)) {
1607: grid_view_get_cell(gd, xx, s->cy, &tmp_gc);
1608: if (~tmp_gc.flags & GRID_FLAG_PADDING)
1609: break;
1.131 nicm 1610: log_debug("%s: overwrite at %u,%u", __func__, xx, s->cy);
1.89 nicm 1611: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
1612: done = 1;
1613: }
1.1 nicm 1614: }
1.89 nicm 1615:
1616: return (done);
1.50 nicm 1617: }
1618:
1.107 nicm 1619: /* Set external clipboard. */
1.50 nicm 1620: void
1621: screen_write_setselection(struct screen_write_ctx *ctx, u_char *str, u_int len)
1622: {
1623: struct tty_ctx ttyctx;
1624:
1.87 nicm 1625: screen_write_initctx(ctx, &ttyctx);
1.50 nicm 1626: ttyctx.ptr = str;
1627: ttyctx.num = len;
1628:
1629: tty_write(tty_cmd_setselection, &ttyctx);
1.47 nicm 1630: }
1631:
1.107 nicm 1632: /* Write unmodified string. */
1.47 nicm 1633: void
1634: screen_write_rawstring(struct screen_write_ctx *ctx, u_char *str, u_int len)
1635: {
1.87 nicm 1636: struct tty_ctx ttyctx;
1.47 nicm 1637:
1.87 nicm 1638: screen_write_initctx(ctx, &ttyctx);
1.47 nicm 1639: ttyctx.ptr = str;
1640: ttyctx.num = len;
1641:
1642: tty_write(tty_cmd_rawstring, &ttyctx);
1.1 nicm 1643: }
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