Annotation of src/usr.bin/tmux/screen-write.c, Revision 1.150
1.150 ! nicm 1: /* $OpenBSD: screen-write.c,v 1.149 2019/03/18 20:53:33 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');
1.125 nicm 402:
1.144 nicm 403: screen_write_set_cursor(ctx, cx, cy);
1.125 nicm 404: }
405:
406: /* Draw a box on screen. */
407: void
408: screen_write_box(struct screen_write_ctx *ctx, u_int nx, u_int ny)
409: {
410: struct screen *s = ctx->s;
411: struct grid_cell gc;
412: u_int cx, cy, i;
413:
414: cx = s->cx;
415: cy = s->cy;
416:
417: memcpy(&gc, &grid_default_cell, sizeof gc);
418: gc.attr |= GRID_ATTR_CHARSET;
419:
420: screen_write_putc(ctx, &gc, 'l');
421: for (i = 1; i < nx - 1; i++)
422: screen_write_putc(ctx, &gc, 'q');
423: screen_write_putc(ctx, &gc, 'k');
424:
1.144 nicm 425: screen_write_set_cursor(ctx, cx, cy + ny - 1);
1.125 nicm 426: screen_write_putc(ctx, &gc, 'm');
427: for (i = 1; i < nx - 1; i++)
428: screen_write_putc(ctx, &gc, 'q');
429: screen_write_putc(ctx, &gc, 'j');
430:
431: for (i = 1; i < ny - 1; i++) {
1.144 nicm 432: screen_write_set_cursor(ctx, cx, cy + i);
1.125 nicm 433: screen_write_putc(ctx, &gc, 'x');
434: }
435: for (i = 1; i < ny - 1; i++) {
1.144 nicm 436: screen_write_set_cursor(ctx, cx + nx - 1, cy + i);
1.125 nicm 437: screen_write_putc(ctx, &gc, 'x');
438: }
439:
1.144 nicm 440: screen_write_set_cursor(ctx, cx, cy);
1.125 nicm 441: }
442:
1.132 nicm 443: /*
444: * Write a preview version of a window. Assumes target area is big enough and
445: * already cleared.
446: */
1.125 nicm 447: void
448: screen_write_preview(struct screen_write_ctx *ctx, struct screen *src, u_int nx,
449: u_int ny)
450: {
451: struct screen *s = ctx->s;
452: struct grid_cell gc;
453: u_int cx, cy, px, py;
454:
455: cx = s->cx;
456: cy = s->cy;
457:
458: /*
459: * If the cursor is on, pick the area around the cursor, otherwise use
460: * the top left.
461: */
462: if (src->mode & MODE_CURSOR) {
463: px = src->cx;
464: if (px < nx / 3)
465: px = 0;
466: else
467: px = px - nx / 3;
468: if (px + nx > screen_size_x(src)) {
469: if (nx > screen_size_x(src))
470: px = 0;
471: else
472: px = screen_size_x(src) - nx;
473: }
474: py = src->cy;
475: if (py < ny / 3)
476: py = 0;
477: else
478: py = py - ny / 3;
479: if (py + ny > screen_size_y(src)) {
480: if (ny > screen_size_y(src))
481: py = 0;
482: else
483: py = screen_size_y(src) - ny;
484: }
485: } else {
486: px = 0;
487: py = 0;
488: }
489:
1.132 nicm 490: screen_write_fast_copy(ctx, src, px, src->grid->hsize + py, nx, ny);
1.125 nicm 491:
492: if (src->mode & MODE_CURSOR) {
493: grid_view_get_cell(src->grid, src->cx, src->cy, &gc);
494: gc.attr |= GRID_ATTR_REVERSE;
1.144 nicm 495: screen_write_set_cursor(ctx, cx + (src->cx - px),
1.125 nicm 496: cy + (src->cy - py));
497: screen_write_cell(ctx, &gc);
1.1 nicm 498: }
499: }
500:
1.17 nicm 501: /* Set up context for TTY command. */
1.87 nicm 502: static void
503: screen_write_initctx(struct screen_write_ctx *ctx, struct tty_ctx *ttyctx)
1.1 nicm 504: {
1.87 nicm 505: struct screen *s = ctx->s;
1.123 nicm 506:
507: memset(ttyctx, 0, sizeof *ttyctx);
1.1 nicm 508:
1.17 nicm 509: ttyctx->wp = ctx->wp;
1.1 nicm 510:
1.17 nicm 511: ttyctx->ocx = s->cx;
512: ttyctx->ocy = s->cy;
513:
514: ttyctx->orlower = s->rlower;
515: ttyctx->orupper = s->rupper;
1.87 nicm 516: }
1.31 nicm 517:
1.61 nicm 518: /* Set a mode. */
519: void
520: screen_write_mode_set(struct screen_write_ctx *ctx, int mode)
521: {
522: struct screen *s = ctx->s;
523:
524: s->mode |= mode;
525: }
526:
527: /* Clear a mode. */
528: void
529: screen_write_mode_clear(struct screen_write_ctx *ctx, int mode)
530: {
531: struct screen *s = ctx->s;
532:
533: s->mode &= ~mode;
534: }
535:
1.1 nicm 536: /* Cursor up by ny. */
537: void
538: screen_write_cursorup(struct screen_write_ctx *ctx, u_int ny)
539: {
540: struct screen *s = ctx->s;
1.139 nicm 541: u_int cx = s->cx, cy = s->cy;
1.1 nicm 542:
543: if (ny == 0)
544: ny = 1;
545:
1.139 nicm 546: if (cy < s->rupper) {
1.12 nicm 547: /* Above region. */
1.139 nicm 548: if (ny > cy)
549: ny = cy;
1.12 nicm 550: } else {
551: /* Below region. */
1.139 nicm 552: if (ny > cy - s->rupper)
553: ny = cy - s->rupper;
1.12 nicm 554: }
1.139 nicm 555: if (cx == screen_size_x(s))
556: cx--;
557:
558: cy -= ny;
1.1 nicm 559:
1.139 nicm 560: screen_write_set_cursor(ctx, cx, cy);
1.1 nicm 561: }
562:
563: /* Cursor down by ny. */
564: void
565: screen_write_cursordown(struct screen_write_ctx *ctx, u_int ny)
566: {
567: struct screen *s = ctx->s;
1.139 nicm 568: u_int cx = s->cx, cy = s->cy;
1.1 nicm 569:
570: if (ny == 0)
571: ny = 1;
572:
1.139 nicm 573: if (cy > s->rlower) {
1.12 nicm 574: /* Below region. */
1.139 nicm 575: if (ny > screen_size_y(s) - 1 - cy)
576: ny = screen_size_y(s) - 1 - cy;
1.12 nicm 577: } else {
578: /* Above region. */
1.139 nicm 579: if (ny > s->rlower - cy)
580: ny = s->rlower - cy;
1.12 nicm 581: }
1.139 nicm 582: if (cx == screen_size_x(s))
583: cx--;
584: else if (ny == 0)
1.1 nicm 585: return;
586:
1.139 nicm 587: cy += ny;
588:
589: screen_write_set_cursor(ctx, cx, cy);
1.1 nicm 590: }
591:
1.101 nicm 592: /* Cursor right by nx. */
1.1 nicm 593: void
594: screen_write_cursorright(struct screen_write_ctx *ctx, u_int nx)
595: {
596: struct screen *s = ctx->s;
1.139 nicm 597: u_int cx = s->cx, cy = s->cy;
1.1 nicm 598:
599: if (nx == 0)
600: nx = 1;
601:
1.139 nicm 602: if (nx > screen_size_x(s) - 1 - cx)
603: nx = screen_size_x(s) - 1 - cx;
1.1 nicm 604: if (nx == 0)
605: return;
606:
1.139 nicm 607: cx += nx;
608:
609: screen_write_set_cursor(ctx, cx, cy);
1.1 nicm 610: }
611:
612: /* Cursor left by nx. */
613: void
614: screen_write_cursorleft(struct screen_write_ctx *ctx, u_int nx)
615: {
616: struct screen *s = ctx->s;
1.139 nicm 617: u_int cx = s->cx, cy = s->cy;
1.1 nicm 618:
619: if (nx == 0)
620: nx = 1;
621:
1.139 nicm 622: if (nx > cx)
623: nx = cx;
1.1 nicm 624: if (nx == 0)
625: return;
626:
1.139 nicm 627: cx -= nx;
628:
629: screen_write_set_cursor(ctx, cx, cy);
1.5 nicm 630: }
631:
1.29 nicm 632: /* Backspace; cursor left unless at start of wrapped line when can move up. */
633: void
634: screen_write_backspace(struct screen_write_ctx *ctx)
635: {
636: struct screen *s = ctx->s;
637: struct grid_line *gl;
1.139 nicm 638: u_int cx = s->cx, cy = s->cy;
1.29 nicm 639:
1.139 nicm 640: if (cx == 0) {
641: if (cy == 0)
1.29 nicm 642: return;
1.139 nicm 643: gl = grid_get_line(s->grid, s->grid->hsize + cy - 1);
1.29 nicm 644: if (gl->flags & GRID_LINE_WRAPPED) {
1.139 nicm 645: cy--;
646: cx = screen_size_x(s) - 1;
1.29 nicm 647: }
648: } else
1.139 nicm 649: cx--;
650:
651: screen_write_set_cursor(ctx, cx, cy);
1.29 nicm 652: }
653:
1.5 nicm 654: /* VT100 alignment test. */
655: void
656: screen_write_alignmenttest(struct screen_write_ctx *ctx)
657: {
658: struct screen *s = ctx->s;
1.17 nicm 659: struct tty_ctx ttyctx;
1.5 nicm 660: struct grid_cell gc;
661: u_int xx, yy;
662:
663: memcpy(&gc, &grid_default_cell, sizeof gc);
1.77 nicm 664: utf8_set(&gc.data, 'E');
1.7 ray 665:
1.5 nicm 666: for (yy = 0; yy < screen_size_y(s); yy++) {
667: for (xx = 0; xx < screen_size_x(s); xx++)
668: grid_view_set_cell(s->grid, xx, yy, &gc);
669: }
1.7 ray 670:
1.139 nicm 671: screen_write_set_cursor(ctx, 0, 0);
1.5 nicm 672:
673: s->rupper = 0;
674: s->rlower = screen_size_y(s) - 1;
1.143 nicm 675:
676: screen_write_initctx(ctx, &ttyctx);
1.5 nicm 677:
1.109 nicm 678: screen_write_collect_clear(ctx, 0, screen_size_y(s) - 1);
1.17 nicm 679: tty_write(tty_cmd_alignmenttest, &ttyctx);
1.1 nicm 680: }
681:
682: /* Insert nx characters. */
683: void
1.99 nicm 684: screen_write_insertcharacter(struct screen_write_ctx *ctx, u_int nx, u_int bg)
1.1 nicm 685: {
686: struct screen *s = ctx->s;
1.17 nicm 687: struct tty_ctx ttyctx;
1.1 nicm 688:
689: if (nx == 0)
690: nx = 1;
691:
1.9 nicm 692: if (nx > screen_size_x(s) - s->cx)
693: nx = screen_size_x(s) - s->cx;
1.1 nicm 694: if (nx == 0)
695: return;
696:
1.107 nicm 697: if (s->cx > screen_size_x(s) - 1)
698: return;
699:
1.87 nicm 700: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 701: ttyctx.bg = bg;
1.1 nicm 702:
1.107 nicm 703: grid_view_insert_cells(s->grid, s->cx, s->cy, nx, bg);
1.1 nicm 704:
1.111 nicm 705: screen_write_collect_flush(ctx, 0);
1.17 nicm 706: ttyctx.num = nx;
707: tty_write(tty_cmd_insertcharacter, &ttyctx);
1.1 nicm 708: }
709:
710: /* Delete nx characters. */
711: void
1.99 nicm 712: screen_write_deletecharacter(struct screen_write_ctx *ctx, u_int nx, u_int bg)
1.1 nicm 713: {
714: struct screen *s = ctx->s;
1.17 nicm 715: struct tty_ctx ttyctx;
1.1 nicm 716:
717: if (nx == 0)
718: nx = 1;
719:
1.9 nicm 720: if (nx > screen_size_x(s) - s->cx)
721: nx = screen_size_x(s) - s->cx;
1.1 nicm 722: if (nx == 0)
723: return;
724:
1.107 nicm 725: if (s->cx > screen_size_x(s) - 1)
726: return;
727:
1.87 nicm 728: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 729: ttyctx.bg = bg;
1.1 nicm 730:
1.107 nicm 731: grid_view_delete_cells(s->grid, s->cx, s->cy, nx, bg);
1.1 nicm 732:
1.111 nicm 733: screen_write_collect_flush(ctx, 0);
1.17 nicm 734: ttyctx.num = nx;
735: tty_write(tty_cmd_deletecharacter, &ttyctx);
1.59 nicm 736: }
737:
738: /* Clear nx characters. */
739: void
1.121 nicm 740: screen_write_clearcharacter(struct screen_write_ctx *ctx, u_int nx, u_int bg)
1.59 nicm 741: {
742: struct screen *s = ctx->s;
743: struct tty_ctx ttyctx;
744:
745: if (nx == 0)
746: nx = 1;
747:
748: if (nx > screen_size_x(s) - s->cx)
749: nx = screen_size_x(s) - s->cx;
750: if (nx == 0)
751: return;
752:
1.107 nicm 753: if (s->cx > screen_size_x(s) - 1)
754: return;
755:
1.87 nicm 756: screen_write_initctx(ctx, &ttyctx);
1.121 nicm 757: ttyctx.bg = bg;
1.59 nicm 758:
1.124 nicm 759: grid_view_clear(s->grid, s->cx, s->cy, nx, 1, bg);
1.59 nicm 760:
1.111 nicm 761: screen_write_collect_flush(ctx, 0);
1.59 nicm 762: ttyctx.num = nx;
763: tty_write(tty_cmd_clearcharacter, &ttyctx);
1.1 nicm 764: }
765:
766: /* Insert ny lines. */
767: void
1.99 nicm 768: screen_write_insertline(struct screen_write_ctx *ctx, u_int ny, u_int bg)
1.1 nicm 769: {
770: struct screen *s = ctx->s;
1.107 nicm 771: struct grid *gd = s->grid;
1.17 nicm 772: struct tty_ctx ttyctx;
1.1 nicm 773:
774: if (ny == 0)
775: ny = 1;
776:
1.11 nicm 777: if (s->cy < s->rupper || s->cy > s->rlower) {
778: if (ny > screen_size_y(s) - s->cy)
779: ny = screen_size_y(s) - s->cy;
780: if (ny == 0)
781: return;
782:
1.87 nicm 783: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 784: ttyctx.bg = bg;
1.11 nicm 785:
1.107 nicm 786: grid_view_insert_lines(gd, s->cy, ny, bg);
1.11 nicm 787:
1.111 nicm 788: screen_write_collect_flush(ctx, 0);
1.17 nicm 789: ttyctx.num = ny;
790: tty_write(tty_cmd_insertline, &ttyctx);
1.11 nicm 791: return;
792: }
793:
794: if (ny > s->rlower + 1 - s->cy)
795: ny = s->rlower + 1 - s->cy;
1.1 nicm 796: if (ny == 0)
797: return;
1.41 nicm 798:
1.87 nicm 799: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 800: ttyctx.bg = bg;
1.1 nicm 801:
802: if (s->cy < s->rupper || s->cy > s->rlower)
1.107 nicm 803: grid_view_insert_lines(gd, s->cy, ny, bg);
804: else
805: grid_view_insert_lines_region(gd, s->rlower, s->cy, ny, bg);
1.1 nicm 806:
1.111 nicm 807: screen_write_collect_flush(ctx, 0);
1.17 nicm 808: ttyctx.num = ny;
809: tty_write(tty_cmd_insertline, &ttyctx);
1.1 nicm 810: }
811:
812: /* Delete ny lines. */
813: void
1.99 nicm 814: screen_write_deleteline(struct screen_write_ctx *ctx, u_int ny, u_int bg)
1.1 nicm 815: {
816: struct screen *s = ctx->s;
1.107 nicm 817: struct grid *gd = s->grid;
1.17 nicm 818: struct tty_ctx ttyctx;
1.1 nicm 819:
820: if (ny == 0)
821: ny = 1;
822:
1.11 nicm 823: if (s->cy < s->rupper || s->cy > s->rlower) {
824: if (ny > screen_size_y(s) - s->cy)
825: ny = screen_size_y(s) - s->cy;
826: if (ny == 0)
827: return;
828:
1.87 nicm 829: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 830: ttyctx.bg = bg;
1.11 nicm 831:
1.107 nicm 832: grid_view_delete_lines(gd, s->cy, ny, bg);
1.11 nicm 833:
1.111 nicm 834: screen_write_collect_flush(ctx, 0);
1.17 nicm 835: ttyctx.num = ny;
836: tty_write(tty_cmd_deleteline, &ttyctx);
1.11 nicm 837: return;
838: }
1.41 nicm 839:
1.11 nicm 840: if (ny > s->rlower + 1 - s->cy)
841: ny = s->rlower + 1 - s->cy;
1.1 nicm 842: if (ny == 0)
843: return;
844:
1.87 nicm 845: screen_write_initctx(ctx, &ttyctx);
1.107 nicm 846: ttyctx.bg = bg;
1.1 nicm 847:
848: if (s->cy < s->rupper || s->cy > s->rlower)
1.107 nicm 849: grid_view_delete_lines(gd, s->cy, ny, bg);
850: else
851: grid_view_delete_lines_region(gd, s->rlower, s->cy, ny, bg);
1.1 nicm 852:
1.111 nicm 853: screen_write_collect_flush(ctx, 0);
1.17 nicm 854: ttyctx.num = ny;
855: tty_write(tty_cmd_deleteline, &ttyctx);
1.1 nicm 856: }
857:
858: /* Clear line at cursor. */
859: void
1.99 nicm 860: screen_write_clearline(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 861: {
1.92 nicm 862: struct screen *s = ctx->s;
863: struct grid_line *gl;
864: struct tty_ctx ttyctx;
865: u_int sx = screen_size_x(s);
1.1 nicm 866:
1.137 nicm 867: gl = grid_get_line(s->grid, s->grid->hsize + s->cy);
1.140 nicm 868: if (gl->cellsize == 0 && COLOUR_DEFAULT(bg))
1.92 nicm 869: return;
1.1 nicm 870:
1.108 nicm 871: screen_write_initctx(ctx, &ttyctx);
872: ttyctx.bg = bg;
873:
1.99 nicm 874: grid_view_clear(s->grid, 0, s->cy, sx, 1, bg);
875:
1.109 nicm 876: screen_write_collect_clear(ctx, s->cy, 1);
1.114 nicm 877: screen_write_collect_flush(ctx, 0);
1.17 nicm 878: tty_write(tty_cmd_clearline, &ttyctx);
1.1 nicm 879: }
880:
881: /* Clear to end of line from cursor. */
882: void
1.99 nicm 883: screen_write_clearendofline(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 884: {
1.92 nicm 885: struct screen *s = ctx->s;
886: struct grid_line *gl;
887: struct tty_ctx ttyctx;
888: u_int sx = screen_size_x(s);
1.1 nicm 889:
1.137 nicm 890: gl = grid_get_line(s->grid, s->grid->hsize + s->cy);
1.140 nicm 891: if (s->cx > sx - 1 || (s->cx >= gl->cellsize && COLOUR_DEFAULT(bg)))
1.92 nicm 892: return;
1.108 nicm 893:
894: screen_write_initctx(ctx, &ttyctx);
895: ttyctx.bg = bg;
1.1 nicm 896:
1.99 nicm 897: grid_view_clear(s->grid, s->cx, s->cy, sx - s->cx, 1, bg);
898:
1.109 nicm 899: if (s->cx == 0)
900: screen_write_collect_clear(ctx, s->cy, 1);
1.114 nicm 901: screen_write_collect_flush(ctx, 0);
1.41 nicm 902: tty_write(tty_cmd_clearendofline, &ttyctx);
1.1 nicm 903: }
904:
905: /* Clear to start of line from cursor. */
906: void
1.99 nicm 907: screen_write_clearstartofline(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 908: {
909: struct screen *s = ctx->s;
1.17 nicm 910: struct tty_ctx ttyctx;
1.92 nicm 911: u_int sx = screen_size_x(s);
1.1 nicm 912:
1.87 nicm 913: screen_write_initctx(ctx, &ttyctx);
1.99 nicm 914: ttyctx.bg = bg;
1.1 nicm 915:
1.109 nicm 916: if (s->cx > sx - 1)
1.99 nicm 917: grid_view_clear(s->grid, 0, s->cy, sx, 1, bg);
1.109 nicm 918: else
1.99 nicm 919: grid_view_clear(s->grid, 0, s->cy, s->cx + 1, 1, bg);
1.1 nicm 920:
1.109 nicm 921: if (s->cx > sx - 1)
922: screen_write_collect_clear(ctx, s->cy, 1);
1.114 nicm 923: screen_write_collect_flush(ctx, 0);
1.17 nicm 924: tty_write(tty_cmd_clearstartofline, &ttyctx);
1.1 nicm 925: }
926:
1.101 nicm 927: /* Move cursor to px,py. */
1.1 nicm 928: void
1.147 nicm 929: screen_write_cursormove(struct screen_write_ctx *ctx, int px, int py,
930: int origin)
1.1 nicm 931: {
932: struct screen *s = ctx->s;
933:
1.147 nicm 934: if (origin && py != -1 && (s->mode & MODE_ORIGIN)) {
1.146 nicm 935: if ((u_int)py > s->rlower - s->rupper)
1.144 nicm 936: py = s->rlower;
937: else
938: py += s->rupper;
939: }
1.145 nicm 940:
1.146 nicm 941: if (px != -1 && (u_int)px > screen_size_x(s) - 1)
1.145 nicm 942: px = screen_size_x(s) - 1;
1.146 nicm 943: if (py != -1 && (u_int)py > screen_size_y(s) - 1)
1.145 nicm 944: py = screen_size_y(s) - 1;
1.1 nicm 945:
1.139 nicm 946: screen_write_set_cursor(ctx, px, py);
1.1 nicm 947: }
948:
1.101 nicm 949: /* Reverse index (up with scroll). */
1.1 nicm 950: void
1.122 nicm 951: screen_write_reverseindex(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 952: {
953: struct screen *s = ctx->s;
1.17 nicm 954: struct tty_ctx ttyctx;
1.1 nicm 955:
1.87 nicm 956: screen_write_initctx(ctx, &ttyctx);
1.122 nicm 957: ttyctx.bg = bg;
1.1 nicm 958:
1.109 nicm 959: if (s->cy == s->rupper)
1.122 nicm 960: grid_view_scroll_region_down(s->grid, s->rupper, s->rlower, bg);
1.109 nicm 961: else if (s->cy > 0)
1.139 nicm 962: screen_write_set_cursor(ctx, -1, s->cy - 1);
1.1 nicm 963:
1.111 nicm 964: screen_write_collect_flush(ctx, 0);
1.17 nicm 965: tty_write(tty_cmd_reverseindex, &ttyctx);
1.1 nicm 966: }
967:
968: /* Set scroll region. */
969: void
1.83 nicm 970: screen_write_scrollregion(struct screen_write_ctx *ctx, u_int rupper,
971: u_int rlower)
1.1 nicm 972: {
973: struct screen *s = ctx->s;
974:
975: if (rupper > screen_size_y(s) - 1)
976: rupper = screen_size_y(s) - 1;
977: if (rlower > screen_size_y(s) - 1)
978: rlower = screen_size_y(s) - 1;
1.13 nicm 979: if (rupper >= rlower) /* cannot be one line */
1.1 nicm 980: return;
981:
1.111 nicm 982: screen_write_collect_flush(ctx, 0);
1.110 nicm 983:
1.1 nicm 984: /* Cursor moves to top-left. */
1.139 nicm 985: screen_write_set_cursor(ctx, 0, 0);
1.1 nicm 986:
987: s->rupper = rupper;
988: s->rlower = rlower;
989: }
990:
1.34 nicm 991: /* Line feed. */
1.1 nicm 992: void
1.122 nicm 993: screen_write_linefeed(struct screen_write_ctx *ctx, int wrapped, u_int bg)
1.1 nicm 994: {
1.20 nicm 995: struct screen *s = ctx->s;
1.109 nicm 996: struct grid *gd = s->grid;
1.20 nicm 997: struct grid_line *gl;
1.1 nicm 998:
1.137 nicm 999: gl = grid_get_line(gd, gd->hsize + s->cy);
1.20 nicm 1000: if (wrapped)
1001: gl->flags |= GRID_LINE_WRAPPED;
1.73 nicm 1002: else
1003: gl->flags &= ~GRID_LINE_WRAPPED;
1.20 nicm 1004:
1.114 nicm 1005: log_debug("%s: at %u,%u (region %u-%u)", __func__, s->cx, s->cy,
1006: s->rupper, s->rlower);
1007:
1.122 nicm 1008: if (bg != ctx->bg) {
1009: screen_write_collect_flush(ctx, 1);
1010: ctx->bg = bg;
1011: }
1012:
1.92 nicm 1013: if (s->cy == s->rlower) {
1.122 nicm 1014: grid_view_scroll_region_up(gd, s->rupper, s->rlower, bg);
1.109 nicm 1015: screen_write_collect_scroll(ctx);
1.110 nicm 1016: ctx->scrolled++;
1.109 nicm 1017: } else if (s->cy < screen_size_y(s) - 1)
1.139 nicm 1018: screen_write_set_cursor(ctx, -1, s->cy + 1);
1.1 nicm 1019: }
1020:
1.110 nicm 1021: /* Scroll up. */
1022: void
1.122 nicm 1023: screen_write_scrollup(struct screen_write_ctx *ctx, u_int lines, u_int bg)
1.110 nicm 1024: {
1025: struct screen *s = ctx->s;
1026: struct grid *gd = s->grid;
1027: u_int i;
1028:
1029: if (lines == 0)
1030: lines = 1;
1031: else if (lines > s->rlower - s->rupper + 1)
1032: lines = s->rlower - s->rupper + 1;
1033:
1.122 nicm 1034: if (bg != ctx->bg) {
1035: screen_write_collect_flush(ctx, 1);
1036: ctx->bg = bg;
1037: }
1038:
1.110 nicm 1039: for (i = 0; i < lines; i++) {
1.122 nicm 1040: grid_view_scroll_region_up(gd, s->rupper, s->rlower, bg);
1.110 nicm 1041: screen_write_collect_scroll(ctx);
1042: }
1043: ctx->scrolled += lines;
1044: }
1045:
1.1 nicm 1046: /* Carriage return (cursor to start of line). */
1047: void
1048: screen_write_carriagereturn(struct screen_write_ctx *ctx)
1049: {
1.139 nicm 1050: screen_write_set_cursor(ctx, 0, -1);
1.1 nicm 1051: }
1052:
1053: /* Clear to end of screen from cursor. */
1054: void
1.99 nicm 1055: screen_write_clearendofscreen(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1056: {
1057: struct screen *s = ctx->s;
1.107 nicm 1058: struct grid *gd = s->grid;
1.17 nicm 1059: struct tty_ctx ttyctx;
1.92 nicm 1060: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.1 nicm 1061:
1.87 nicm 1062: screen_write_initctx(ctx, &ttyctx);
1.99 nicm 1063: ttyctx.bg = bg;
1.1 nicm 1064:
1.46 nicm 1065: /* Scroll into history if it is enabled and clearing entire screen. */
1.109 nicm 1066: if (s->cx == 0 && s->cy == 0 && (gd->flags & GRID_HISTORY))
1.107 nicm 1067: grid_view_clear_history(gd, bg);
1.109 nicm 1068: else {
1069: if (s->cx <= sx - 1)
1.107 nicm 1070: grid_view_clear(gd, s->cx, s->cy, sx - s->cx, 1, bg);
1071: grid_view_clear(gd, 0, s->cy + 1, sx, sy - (s->cy + 1), bg);
1.46 nicm 1072: }
1.1 nicm 1073:
1.109 nicm 1074: screen_write_collect_clear(ctx, s->cy + 1, sy - (s->cy + 1));
1.111 nicm 1075: screen_write_collect_flush(ctx, 0);
1.17 nicm 1076: tty_write(tty_cmd_clearendofscreen, &ttyctx);
1.1 nicm 1077: }
1078:
1079: /* Clear to start of screen. */
1080: void
1.105 nicm 1081: screen_write_clearstartofscreen(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1082: {
1083: struct screen *s = ctx->s;
1.17 nicm 1084: struct tty_ctx ttyctx;
1.92 nicm 1085: u_int sx = screen_size_x(s);
1.1 nicm 1086:
1.87 nicm 1087: screen_write_initctx(ctx, &ttyctx);
1.105 nicm 1088: ttyctx.bg = bg;
1.1 nicm 1089:
1.109 nicm 1090: if (s->cy > 0)
1.105 nicm 1091: grid_view_clear(s->grid, 0, 0, sx, s->cy, bg);
1.109 nicm 1092: if (s->cx > sx - 1)
1.120 nicm 1093: grid_view_clear(s->grid, 0, s->cy, sx, 1, bg);
1.109 nicm 1094: else
1.120 nicm 1095: grid_view_clear(s->grid, 0, s->cy, s->cx + 1, 1, bg);
1.1 nicm 1096:
1.109 nicm 1097: screen_write_collect_clear(ctx, 0, s->cy);
1.111 nicm 1098: screen_write_collect_flush(ctx, 0);
1.17 nicm 1099: tty_write(tty_cmd_clearstartofscreen, &ttyctx);
1.1 nicm 1100: }
1101:
1102: /* Clear entire screen. */
1103: void
1.99 nicm 1104: screen_write_clearscreen(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1105: {
1106: struct screen *s = ctx->s;
1.17 nicm 1107: struct tty_ctx ttyctx;
1.92 nicm 1108: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.1 nicm 1109:
1.87 nicm 1110: screen_write_initctx(ctx, &ttyctx);
1.99 nicm 1111: ttyctx.bg = bg;
1.1 nicm 1112:
1.46 nicm 1113: /* Scroll into history if it is enabled. */
1114: if (s->grid->flags & GRID_HISTORY)
1.99 nicm 1115: grid_view_clear_history(s->grid, bg);
1.83 nicm 1116: else
1.99 nicm 1117: grid_view_clear(s->grid, 0, 0, sx, sy, bg);
1.1 nicm 1118:
1.109 nicm 1119: screen_write_collect_clear(ctx, 0, sy);
1.17 nicm 1120: tty_write(tty_cmd_clearscreen, &ttyctx);
1.51 nicm 1121: }
1122:
1123: /* Clear entire history. */
1124: void
1125: screen_write_clearhistory(struct screen_write_ctx *ctx)
1126: {
1127: struct screen *s = ctx->s;
1128: struct grid *gd = s->grid;
1129:
1.99 nicm 1130: grid_move_lines(gd, 0, gd->hsize, gd->sy, 8);
1.93 nicm 1131: gd->hscrolled = gd->hsize = 0;
1.1 nicm 1132: }
1133:
1.109 nicm 1134: /* Clear a collected line. */
1135: static void
1136: screen_write_collect_clear(struct screen_write_ctx *ctx, u_int y, u_int n)
1137: {
1138: struct screen_write_collect_item *ci, *tmp;
1139: u_int i;
1140: size_t size;
1141:
1142: for (i = y ; i < y + n; i++) {
1143: if (TAILQ_EMPTY(&ctx->list[i].items))
1144: continue;
1145: size = 0;
1146: TAILQ_FOREACH_SAFE(ci, &ctx->list[i].items, entry, tmp) {
1147: size += ci->used;
1148: TAILQ_REMOVE(&ctx->list[i].items, ci, entry);
1149: free(ci);
1150: }
1151: ctx->skipped += size;
1.114 nicm 1152: log_debug("%s: dropped %zu bytes (line %u)", __func__, size, i);
1.109 nicm 1153: }
1154: }
1155:
1156: /* Scroll collected lines up. */
1157: static void
1158: screen_write_collect_scroll(struct screen_write_ctx *ctx)
1159: {
1160: struct screen *s = ctx->s;
1161: struct screen_write_collect_line *cl;
1162: u_int y;
1163:
1.114 nicm 1164: log_debug("%s: at %u,%u (region %u-%u)", __func__, s->cx, s->cy,
1165: s->rupper, s->rlower);
1166:
1.109 nicm 1167: screen_write_collect_clear(ctx, s->rupper, 1);
1168: for (y = s->rupper; y < s->rlower; y++) {
1169: cl = &ctx->list[y + 1];
1170: TAILQ_CONCAT(&ctx->list[y].items, &cl->items, entry);
1171: TAILQ_INIT(&cl->items);
1172: }
1173: }
1174:
1175: /* Flush collected lines. */
1176: static void
1.111 nicm 1177: screen_write_collect_flush(struct screen_write_ctx *ctx, int scroll_only)
1.109 nicm 1178: {
1179: struct screen *s = ctx->s;
1180: struct screen_write_collect_item *ci, *tmp;
1.116 nicm 1181: u_int y, cx, cy, items = 0;
1.109 nicm 1182: struct tty_ctx ttyctx;
1.116 nicm 1183: size_t written = 0;
1.110 nicm 1184:
1185: if (ctx->scrolled != 0) {
1186: log_debug("%s: scrolled %u (region %u-%u)", __func__,
1187: ctx->scrolled, s->rupper, s->rlower);
1188: if (ctx->scrolled > s->rlower - s->rupper + 1)
1189: ctx->scrolled = s->rlower - s->rupper + 1;
1190:
1191: screen_write_initctx(ctx, &ttyctx);
1192: ttyctx.num = ctx->scrolled;
1.122 nicm 1193: ttyctx.bg = ctx->bg;
1.110 nicm 1194: tty_write(tty_cmd_scrollup, &ttyctx);
1195: }
1196: ctx->scrolled = 0;
1.122 nicm 1197: ctx->bg = 8;
1198:
1.111 nicm 1199: if (scroll_only)
1200: return;
1.109 nicm 1201:
1202: cx = s->cx; cy = s->cy;
1203: for (y = 0; y < screen_size_y(s); y++) {
1204: TAILQ_FOREACH_SAFE(ci, &ctx->list[y].items, entry, tmp) {
1.144 nicm 1205: screen_write_set_cursor(ctx, ci->x, y);
1.109 nicm 1206: screen_write_initctx(ctx, &ttyctx);
1207: ttyctx.cell = &ci->gc;
1.118 nicm 1208: ttyctx.wrapped = ci->wrapped;
1.109 nicm 1209: ttyctx.ptr = ci->data;
1210: ttyctx.num = ci->used;
1211: tty_write(tty_cmd_cells, &ttyctx);
1.116 nicm 1212:
1213: items++;
1214: written += ci->used;
1.109 nicm 1215:
1216: TAILQ_REMOVE(&ctx->list[y].items, ci, entry);
1217: free(ci);
1218: }
1219: }
1220: s->cx = cx; s->cy = cy;
1.116 nicm 1221:
1222: log_debug("%s: flushed %u items (%zu bytes)", __func__, items, written);
1223: ctx->written += written;
1.109 nicm 1224: }
1225:
1226: /* Finish and store collected cells. */
1227: void
1228: screen_write_collect_end(struct screen_write_ctx *ctx)
1229: {
1230: struct screen *s = ctx->s;
1231: struct screen_write_collect_item *ci = ctx->item;
1232: struct grid_cell gc;
1.131 nicm 1233: u_int xx;
1.109 nicm 1234:
1235: if (ci->used == 0)
1236: return;
1237: ci->data[ci->used] = '\0';
1238:
1239: ci->x = s->cx;
1240: TAILQ_INSERT_TAIL(&ctx->list[s->cy].items, ci, entry);
1241: ctx->item = xcalloc(1, sizeof *ctx->item);
1242:
1243: log_debug("%s: %u %s (at %u,%u)", __func__, ci->used, ci->data, s->cx,
1244: s->cy);
1245:
1.131 nicm 1246: if (s->cx != 0) {
1247: for (xx = s->cx; xx > 0; xx--) {
1248: grid_view_get_cell(s->grid, xx, s->cy, &gc);
1249: if (~gc.flags & GRID_FLAG_PADDING)
1250: break;
1.136 nicm 1251: grid_view_set_cell(s->grid, xx, s->cy,
1252: &grid_default_cell);
1.131 nicm 1253: }
1.139 nicm 1254: if (gc.data.width > 1) {
1.136 nicm 1255: grid_view_set_cell(s->grid, xx, s->cy,
1256: &grid_default_cell);
1.139 nicm 1257: }
1.131 nicm 1258: }
1259:
1.109 nicm 1260: memcpy(&gc, &ci->gc, sizeof gc);
1261: grid_view_set_cells(s->grid, s->cx, s->cy, &gc, ci->data, ci->used);
1.139 nicm 1262: screen_write_set_cursor(ctx, s->cx + ci->used, -1);
1.131 nicm 1263:
1264: for (xx = s->cx; xx < screen_size_x(s); xx++) {
1265: grid_view_get_cell(s->grid, xx, s->cy, &gc);
1266: if (~gc.flags & GRID_FLAG_PADDING)
1267: break;
1268: grid_view_set_cell(s->grid, xx, s->cy, &grid_default_cell);
1269: }
1.109 nicm 1270: }
1271:
1272: /* Write cell data, collecting if necessary. */
1273: void
1274: screen_write_collect_add(struct screen_write_ctx *ctx,
1275: const struct grid_cell *gc)
1276: {
1277: struct screen *s = ctx->s;
1278: struct screen_write_collect_item *ci;
1279: u_int sx = screen_size_x(s);
1280: int collect;
1281:
1282: /*
1283: * Don't need to check that the attributes and whatnot are still the
1.116 nicm 1284: * same - input_parse will end the collection when anything that isn't
1285: * a plain character is encountered. Also nothing should make it here
1286: * that isn't a single ASCII character.
1.109 nicm 1287: */
1288:
1289: collect = 1;
1.136 nicm 1290: if (gc->data.width != 1 || gc->data.size != 1 || *gc->data.data >= 0x7f)
1.109 nicm 1291: collect = 0;
1292: else if (gc->attr & GRID_ATTR_CHARSET)
1293: collect = 0;
1294: else if (~s->mode & MODE_WRAP)
1295: collect = 0;
1296: else if (s->mode & MODE_INSERT)
1297: collect = 0;
1.138 nicm 1298: else if (s->sel != NULL)
1.109 nicm 1299: collect = 0;
1300: if (!collect) {
1301: screen_write_collect_end(ctx);
1.116 nicm 1302: screen_write_collect_flush(ctx, 0);
1.109 nicm 1303: screen_write_cell(ctx, gc);
1304: return;
1305: }
1306: ctx->cells++;
1307:
1308: if (s->cx > sx - 1 || ctx->item->used > sx - 1 - s->cx)
1309: screen_write_collect_end(ctx);
1.118 nicm 1310: ci = ctx->item; /* may have changed */
1311:
1.109 nicm 1312: if (s->cx > sx - 1) {
1.114 nicm 1313: log_debug("%s: wrapped at %u,%u", __func__, s->cx, s->cy);
1.118 nicm 1314: ci->wrapped = 1;
1.122 nicm 1315: screen_write_linefeed(ctx, 1, 8);
1.139 nicm 1316: screen_write_set_cursor(ctx, 0, -1);
1.109 nicm 1317: }
1318:
1319: if (ci->used == 0)
1320: memcpy(&ci->gc, gc, sizeof ci->gc);
1321: ci->data[ci->used++] = gc->data.data[0];
1322: if (ci->used == (sizeof ci->data) - 1)
1323: screen_write_collect_end(ctx);
1324: }
1325:
1.1 nicm 1326: /* Write cell data. */
1327: void
1.60 nicm 1328: screen_write_cell(struct screen_write_ctx *ctx, const struct grid_cell *gc)
1.1 nicm 1329: {
1330: struct screen *s = ctx->s;
1331: struct grid *gd = s->grid;
1.109 nicm 1332: struct grid_line *gl;
1333: struct grid_cell_entry *gce;
1334: struct grid_cell tmp_gc, now_gc;
1.15 nicm 1335: struct tty_ctx ttyctx;
1.92 nicm 1336: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.115 nicm 1337: u_int width = gc->data.width, xx, last, cx, cy;
1.109 nicm 1338: int selected, skip = 1;
1.1 nicm 1339:
1.109 nicm 1340: /* Ignore padding cells. */
1.1 nicm 1341: if (gc->flags & GRID_FLAG_PADDING)
1342: return;
1.109 nicm 1343: ctx->cells++;
1.32 nicm 1344:
1.109 nicm 1345: /* If the width is zero, combine onto the previous character. */
1.1 nicm 1346: if (width == 0) {
1.112 nicm 1347: screen_write_collect_flush(ctx, 0);
1.104 nicm 1348: if ((gc = screen_write_combine(ctx, &gc->data, &xx)) != 0) {
1.115 nicm 1349: cx = s->cx; cy = s->cy;
1.144 nicm 1350: screen_write_set_cursor(ctx, xx, s->cy);
1.87 nicm 1351: screen_write_initctx(ctx, &ttyctx);
1.104 nicm 1352: ttyctx.cell = gc;
1353: tty_write(tty_cmd_cell, &ttyctx);
1.115 nicm 1354: s->cx = cx; s->cy = cy;
1.1 nicm 1355: }
1356: return;
1357: }
1.112 nicm 1358:
1359: /* Flush any existing scrolling. */
1360: screen_write_collect_flush(ctx, 1);
1.1 nicm 1361:
1.109 nicm 1362: /* If this character doesn't fit, ignore it. */
1363: if ((~s->mode & MODE_WRAP) &&
1364: width > 1 &&
1365: (width > sx || (s->cx != sx && s->cx > sx - width)))
1366: return;
1367:
1.6 nicm 1368: /* If in insert mode, make space for the cells. */
1.98 nicm 1369: if (s->mode & MODE_INSERT) {
1.109 nicm 1370: grid_view_insert_cells(s->grid, s->cx, s->cy, width, 8);
1371: skip = 0;
1372: }
1.6 nicm 1373:
1.20 nicm 1374: /* Check this will fit on the current line and wrap if not. */
1.92 nicm 1375: if ((s->mode & MODE_WRAP) && s->cx > sx - width) {
1.128 nicm 1376: log_debug("%s: wrapped at %u,%u", __func__, s->cx, s->cy);
1.122 nicm 1377: screen_write_linefeed(ctx, 1, 8);
1.139 nicm 1378: screen_write_set_cursor(ctx, 0, -1);
1.128 nicm 1379: screen_write_collect_flush(ctx, 1);
1.1 nicm 1380: }
1381:
1.64 nicm 1382: /* Sanity check cursor position. */
1.92 nicm 1383: if (s->cx > sx - width || s->cy > sy - 1)
1.1 nicm 1384: return;
1.106 nicm 1385: screen_write_initctx(ctx, &ttyctx);
1386:
1.1 nicm 1387: /* Handle overwriting of UTF-8 characters. */
1.137 nicm 1388: gl = grid_get_line(s->grid, s->grid->hsize + s->cy);
1.92 nicm 1389: if (gl->flags & GRID_LINE_EXTENDED) {
1390: grid_view_get_cell(gd, s->cx, s->cy, &now_gc);
1391: if (screen_write_overwrite(ctx, &now_gc, width))
1392: skip = 0;
1393: }
1.1 nicm 1394:
1395: /*
1396: * If the new character is UTF-8 wide, fill in padding cells. Have
1397: * already ensured there is enough room.
1398: */
1.89 nicm 1399: for (xx = s->cx + 1; xx < s->cx + width; xx++) {
1.131 nicm 1400: log_debug("%s: new padding at %u,%u", __func__, xx, s->cy);
1.88 nicm 1401: grid_view_set_cell(gd, xx, s->cy, &screen_write_pad_cell);
1.89 nicm 1402: skip = 0;
1403: }
1404:
1405: /* If no change, do not draw. */
1.92 nicm 1406: if (skip) {
1407: if (s->cx >= gl->cellsize)
1408: skip = grid_cells_equal(gc, &grid_default_cell);
1409: else {
1410: gce = &gl->celldata[s->cx];
1411: if (gce->flags & GRID_FLAG_EXTENDED)
1412: skip = 0;
1.95 nicm 1413: else if (gc->flags != gce->flags)
1.92 nicm 1414: skip = 0;
1415: else if (gc->attr != gce->data.attr)
1416: skip = 0;
1417: else if (gc->fg != gce->data.fg)
1418: skip = 0;
1419: else if (gc->bg != gce->data.bg)
1420: skip = 0;
1.95 nicm 1421: else if (gc->data.width != 1)
1422: skip = 0;
1.109 nicm 1423: else if (gc->data.size != 1)
1424: skip = 0;
1.95 nicm 1425: else if (gce->data.data != gc->data.data[0])
1.92 nicm 1426: skip = 0;
1427: }
1428: }
1.1 nicm 1429:
1.127 nicm 1430: /* Update the selected flag and set the cell. */
1.90 nicm 1431: selected = screen_check_selection(s, s->cx, s->cy);
1.109 nicm 1432: if (selected && (~gc->flags & GRID_FLAG_SELECTED)) {
1.90 nicm 1433: memcpy(&tmp_gc, gc, sizeof tmp_gc);
1434: tmp_gc.flags |= GRID_FLAG_SELECTED;
1435: grid_view_set_cell(gd, s->cx, s->cy, &tmp_gc);
1.109 nicm 1436: } else if (!selected && (gc->flags & GRID_FLAG_SELECTED)) {
1.90 nicm 1437: memcpy(&tmp_gc, gc, sizeof tmp_gc);
1438: tmp_gc.flags &= ~GRID_FLAG_SELECTED;
1439: grid_view_set_cell(gd, s->cx, s->cy, &tmp_gc);
1440: } else if (!skip)
1.89 nicm 1441: grid_view_set_cell(gd, s->cx, s->cy, gc);
1.109 nicm 1442: if (selected)
1443: skip = 0;
1.1 nicm 1444:
1.64 nicm 1445: /*
1446: * Move the cursor. If not wrapping, stick at the last character and
1447: * replace it.
1448: */
1.65 nicm 1449: last = !(s->mode & MODE_WRAP);
1.92 nicm 1450: if (s->cx <= sx - last - width)
1.139 nicm 1451: screen_write_set_cursor(ctx, s->cx + width, -1);
1.64 nicm 1452: else
1.139 nicm 1453: screen_write_set_cursor(ctx, sx - last, -1);
1.1 nicm 1454:
1.89 nicm 1455: /* Create space for character in insert mode. */
1.109 nicm 1456: if (s->mode & MODE_INSERT) {
1.113 nicm 1457: screen_write_collect_flush(ctx, 0);
1.17 nicm 1458: ttyctx.num = width;
1459: tty_write(tty_cmd_insertcharacter, &ttyctx);
1460: }
1.89 nicm 1461:
1462: /* Write to the screen. */
1.109 nicm 1463: if (!skip) {
1464: if (selected) {
1465: screen_select_cell(s, &tmp_gc, gc);
1466: ttyctx.cell = &tmp_gc;
1467: } else
1468: ttyctx.cell = gc;
1.16 nicm 1469: tty_write(tty_cmd_cell, &ttyctx);
1.92 nicm 1470: ctx->written++;
1471: } else
1472: ctx->skipped++;
1.35 nicm 1473: }
1474:
1475: /* Combine a UTF-8 zero-width character onto the previous. */
1.104 nicm 1476: static const struct grid_cell *
1477: screen_write_combine(struct screen_write_ctx *ctx, const struct utf8_data *ud,
1478: u_int *xx)
1.35 nicm 1479: {
1480: struct screen *s = ctx->s;
1481: struct grid *gd = s->grid;
1.104 nicm 1482: static struct grid_cell gc;
1483: u_int n;
1.35 nicm 1484:
1485: /* Can't combine if at 0. */
1486: if (s->cx == 0)
1.104 nicm 1487: return (NULL);
1.35 nicm 1488:
1.60 nicm 1489: /* Empty data is out. */
1490: if (ud->size == 0)
1.37 nicm 1491: fatalx("UTF-8 data empty");
1492:
1.60 nicm 1493: /* Retrieve the previous cell. */
1.119 nicm 1494: for (n = 1; n <= s->cx; n++) {
1.104 nicm 1495: grid_view_get_cell(gd, s->cx - n, s->cy, &gc);
1496: if (~gc.flags & GRID_FLAG_PADDING)
1497: break;
1498: }
1.119 nicm 1499: if (n > s->cx)
1.104 nicm 1500: return (NULL);
1501: *xx = s->cx - n;
1.35 nicm 1502:
1.60 nicm 1503: /* Check there is enough space. */
1.77 nicm 1504: if (gc.data.size + ud->size > sizeof gc.data.data)
1.104 nicm 1505: return (NULL);
1506:
1507: log_debug("%s: %.*s onto %.*s at %u,%u", __func__, (int)ud->size,
1508: ud->data, (int)gc.data.size, gc.data.data, *xx, s->cy);
1.35 nicm 1509:
1.77 nicm 1510: /* Append the data. */
1511: memcpy(gc.data.data + gc.data.size, ud->data, ud->size);
1512: gc.data.size += ud->size;
1513:
1514: /* Set the new cell. */
1.104 nicm 1515: grid_view_set_cell(gd, *xx, s->cy, &gc);
1.35 nicm 1516:
1.104 nicm 1517: return (&gc);
1.1 nicm 1518: }
1519:
1520: /*
1521: * UTF-8 wide characters are a bit of an annoyance. They take up more than one
1522: * cell on the screen, so following cells must not be drawn by marking them as
1523: * padding.
1524: *
1525: * So far, so good. The problem is, when overwriting a padding cell, or a UTF-8
1526: * character, it is necessary to also overwrite any other cells which covered
1527: * by the same character.
1528: */
1.89 nicm 1529: static int
1530: screen_write_overwrite(struct screen_write_ctx *ctx, struct grid_cell *gc,
1531: u_int width)
1.1 nicm 1532: {
1533: struct screen *s = ctx->s;
1534: struct grid *gd = s->grid;
1.89 nicm 1535: struct grid_cell tmp_gc;
1.1 nicm 1536: u_int xx;
1.89 nicm 1537: int done = 0;
1.1 nicm 1538:
1.89 nicm 1539: if (gc->flags & GRID_FLAG_PADDING) {
1.1 nicm 1540: /*
1541: * A padding cell, so clear any following and leading padding
1542: * cells back to the character. Don't overwrite the current
1543: * cell as that happens later anyway.
1544: */
1545: xx = s->cx + 1;
1546: while (--xx > 0) {
1.89 nicm 1547: grid_view_get_cell(gd, xx, s->cy, &tmp_gc);
1548: if (~tmp_gc.flags & GRID_FLAG_PADDING)
1.1 nicm 1549: break;
1.131 nicm 1550: log_debug("%s: padding at %u,%u", __func__, xx, s->cy);
1.1 nicm 1551: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
1552: }
1553:
1554: /* Overwrite the character at the start of this padding. */
1.131 nicm 1555: log_debug("%s: character at %u,%u", __func__, xx, s->cy);
1.1 nicm 1556: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
1.89 nicm 1557: done = 1;
1.43 nicm 1558: }
1.1 nicm 1559:
1.43 nicm 1560: /*
1.95 nicm 1561: * Overwrite any padding cells that belong to any UTF-8 characters
1562: * we'll be overwriting with the current character.
1.43 nicm 1563: */
1.95 nicm 1564: if (width != 1 ||
1565: gc->data.width != 1 ||
1566: gc->flags & GRID_FLAG_PADDING) {
1.89 nicm 1567: xx = s->cx + width - 1;
1568: while (++xx < screen_size_x(s)) {
1569: grid_view_get_cell(gd, xx, s->cy, &tmp_gc);
1570: if (~tmp_gc.flags & GRID_FLAG_PADDING)
1571: break;
1.131 nicm 1572: log_debug("%s: overwrite at %u,%u", __func__, xx, s->cy);
1.89 nicm 1573: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
1574: done = 1;
1575: }
1.1 nicm 1576: }
1.89 nicm 1577:
1578: return (done);
1.50 nicm 1579: }
1580:
1.107 nicm 1581: /* Set external clipboard. */
1.50 nicm 1582: void
1583: screen_write_setselection(struct screen_write_ctx *ctx, u_char *str, u_int len)
1584: {
1585: struct tty_ctx ttyctx;
1586:
1.87 nicm 1587: screen_write_initctx(ctx, &ttyctx);
1.50 nicm 1588: ttyctx.ptr = str;
1589: ttyctx.num = len;
1590:
1591: tty_write(tty_cmd_setselection, &ttyctx);
1.47 nicm 1592: }
1593:
1.107 nicm 1594: /* Write unmodified string. */
1.47 nicm 1595: void
1596: screen_write_rawstring(struct screen_write_ctx *ctx, u_char *str, u_int len)
1597: {
1.87 nicm 1598: struct tty_ctx ttyctx;
1.47 nicm 1599:
1.87 nicm 1600: screen_write_initctx(ctx, &ttyctx);
1.47 nicm 1601: ttyctx.ptr = str;
1602: ttyctx.num = len;
1603:
1604: tty_write(tty_cmd_rawstring, &ttyctx);
1.1 nicm 1605: }
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