Annotation of src/usr.bin/tmux/screen-write.c, Revision 1.203
1.203 ! nicm 1: /* $OpenBSD: screen-write.c,v 1.202 2021/10/20 09:50:40 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:
1.193 nicm 26: static struct screen_write_citem *screen_write_collect_trim(
27: struct screen_write_ctx *, u_int, u_int, u_int, int *);
1.109 nicm 28: static void screen_write_collect_clear(struct screen_write_ctx *, u_int,
29: u_int);
1.193 nicm 30: static void screen_write_collect_scroll(struct screen_write_ctx *, u_int);
1.164 nicm 31: static void screen_write_collect_flush(struct screen_write_ctx *, int,
32: const char *);
1.87 nicm 33:
1.89 nicm 34: static int screen_write_overwrite(struct screen_write_ctx *,
35: struct grid_cell *, u_int);
1.104 nicm 36: static const struct grid_cell *screen_write_combine(struct screen_write_ctx *,
37: const struct utf8_data *, u_int *);
1.1 nicm 38:
1.193 nicm 39: struct screen_write_citem {
40: u_int x;
41: int wrapped;
42:
43: enum { TEXT, CLEAR } type;
44: u_int used;
45: u_int bg;
1.109 nicm 46:
1.193 nicm 47: struct grid_cell gc;
1.109 nicm 48:
1.193 nicm 49: TAILQ_ENTRY(screen_write_citem) entry;
1.109 nicm 50: };
1.193 nicm 51: struct screen_write_cline {
52: char *data;
53: TAILQ_HEAD(, screen_write_citem) items;
1.109 nicm 54: };
1.193 nicm 55: TAILQ_HEAD(, screen_write_citem) screen_write_citem_freelist =
56: TAILQ_HEAD_INITIALIZER(screen_write_citem_freelist);
57:
58: static struct screen_write_citem *
59: screen_write_get_citem(void)
60: {
61: struct screen_write_citem *ci;
62:
63: ci = TAILQ_FIRST(&screen_write_citem_freelist);
64: if (ci != NULL) {
65: TAILQ_REMOVE(&screen_write_citem_freelist, ci, entry);
66: memset(ci, 0, sizeof *ci);
67: return (ci);
68: }
69: return (xcalloc(1, sizeof *ci));
70: }
71:
72: static void
73: screen_write_free_citem(struct screen_write_citem *ci)
74: {
75: TAILQ_INSERT_TAIL(&screen_write_citem_freelist, ci, entry);
76: }
1.92 nicm 77:
1.139 nicm 78: static void
79: screen_write_offset_timer(__unused int fd, __unused short events, void *data)
80: {
81: struct window *w = data;
82:
83: tty_update_window_offset(w);
84: }
85:
86: /* Set cursor position. */
87: static void
88: screen_write_set_cursor(struct screen_write_ctx *ctx, int cx, int cy)
89: {
90: struct window_pane *wp = ctx->wp;
91: struct window *w;
92: struct screen *s = ctx->s;
93: struct timeval tv = { .tv_usec = 10000 };
94:
95: if (cx != -1 && (u_int)cx == s->cx && cy != -1 && (u_int)cy == s->cy)
96: return;
97:
1.144 nicm 98: if (cx != -1) {
1.145 nicm 99: if ((u_int)cx > screen_size_x(s)) /* allow last column */
1.144 nicm 100: cx = screen_size_x(s) - 1;
1.139 nicm 101: s->cx = cx;
1.144 nicm 102: }
103: if (cy != -1) {
104: if ((u_int)cy > screen_size_y(s) - 1)
105: cy = screen_size_y(s) - 1;
1.139 nicm 106: s->cy = cy;
1.144 nicm 107: }
1.139 nicm 108:
109: if (wp == NULL)
110: return;
111: w = wp->window;
112:
113: if (!event_initialized(&w->offset_timer))
114: evtimer_set(&w->offset_timer, screen_write_offset_timer, w);
115: if (!evtimer_pending(&w->offset_timer, NULL))
116: evtimer_add(&w->offset_timer, &tv);
117: }
118:
1.178 nicm 119: /* Do a full redraw. */
120: static void
121: screen_write_redraw_cb(const struct tty_ctx *ttyctx)
122: {
123: struct window_pane *wp = ttyctx->arg;
124:
1.185 nicm 125: if (wp != NULL)
126: wp->flags |= PANE_REDRAW;
1.178 nicm 127: }
128:
129: /* Update context for client. */
130: static int
131: screen_write_set_client_cb(struct tty_ctx *ttyctx, struct client *c)
132: {
133: struct window_pane *wp = ttyctx->arg;
134:
135: if (c->session->curw->window != wp->window)
136: return (0);
137: if (wp->layout_cell == NULL)
138: return (0);
139:
140: if (wp->flags & (PANE_REDRAW|PANE_DROP))
141: return (-1);
142: if (c->flags & CLIENT_REDRAWPANES) {
143: /*
144: * Redraw is already deferred to redraw another pane - redraw
145: * this one also when that happens.
146: */
1.193 nicm 147: log_debug("%s: adding %%%u to deferred redraw", __func__,
148: wp->id);
1.178 nicm 149: wp->flags |= PANE_REDRAW;
150: return (-1);
151: }
152:
153: ttyctx->bigger = tty_window_offset(&c->tty, &ttyctx->wox, &ttyctx->woy,
154: &ttyctx->wsx, &ttyctx->wsy);
155:
156: ttyctx->xoff = ttyctx->rxoff = wp->xoff;
157: ttyctx->yoff = ttyctx->ryoff = wp->yoff;
158:
159: if (status_at_line(c) == 0)
160: ttyctx->yoff += status_line_size(c);
161:
162: return (1);
163: }
164:
1.163 nicm 165: /* Set up context for TTY command. */
166: static void
167: screen_write_initctx(struct screen_write_ctx *ctx, struct tty_ctx *ttyctx,
168: int sync)
169: {
170: struct screen *s = ctx->s;
171:
172: memset(ttyctx, 0, sizeof *ttyctx);
173:
1.178 nicm 174: ttyctx->s = s;
1.177 nicm 175: ttyctx->sx = screen_size_x(s);
176: ttyctx->sy = screen_size_y(s);
1.163 nicm 177:
178: ttyctx->ocx = s->cx;
179: ttyctx->ocy = s->cy;
180: ttyctx->orlower = s->rlower;
181: ttyctx->orupper = s->rupper;
182:
1.197 nicm 183: memcpy(&ttyctx->defaults, &grid_default_cell, sizeof ttyctx->defaults);
184: if (ctx->init_ctx_cb != NULL) {
1.178 nicm 185: ctx->init_ctx_cb(ctx, ttyctx);
1.197 nicm 186: if (ttyctx->palette != NULL) {
1.203 ! nicm 187: if (COLOUR_DEFAULT(ttyctx->defaults.fg))
! 188: ttyctx->defaults.fg = ttyctx->palette->fg;
! 189: if (COLOUR_DEFAULT(ttyctx->defaults.bg))
! 190: ttyctx->defaults.bg = ttyctx->palette->bg;
1.197 nicm 191: }
192: } else {
1.178 nicm 193: ttyctx->redraw_cb = screen_write_redraw_cb;
1.197 nicm 194: if (ctx->wp != NULL) {
195: tty_default_colours(&ttyctx->defaults, ctx->wp);
196: ttyctx->palette = &ctx->wp->palette;
1.178 nicm 197: ttyctx->set_client_cb = screen_write_set_client_cb;
1.197 nicm 198: ttyctx->arg = ctx->wp;
199: }
1.178 nicm 200: }
201:
1.199 nicm 202: if (~ctx->flags & SCREEN_WRITE_SYNC) {
203: /*
204: * For the active pane or for an overlay (no pane), we want to
205: * only use synchronized updates if requested (commands that
206: * move the cursor); for other panes, always use it, since the
207: * cursor will have to move.
208: */
209: if (ctx->wp != NULL) {
210: if (ctx->wp != ctx->wp->window->active)
211: ttyctx->num = 1;
212: else
213: ttyctx->num = sync;
214: } else
215: ttyctx->num = 0x10|sync;
1.163 nicm 216: tty_write(tty_cmd_syncstart, ttyctx);
1.180 nicm 217: ctx->flags |= SCREEN_WRITE_SYNC;
1.163 nicm 218: }
219: }
220:
1.170 nicm 221: /* Make write list. */
222: void
223: screen_write_make_list(struct screen *s)
224: {
225: u_int y;
226:
227: s->write_list = xcalloc(screen_size_y(s), sizeof *s->write_list);
228: for (y = 0; y < screen_size_y(s); y++)
229: TAILQ_INIT(&s->write_list[y].items);
230: }
231:
232: /* Free write list. */
233: void
234: screen_write_free_list(struct screen *s)
235: {
236: u_int y;
237:
238: for (y = 0; y < screen_size_y(s); y++)
239: free(s->write_list[y].data);
240: free(s->write_list);
241: }
242:
1.178 nicm 243: /* Set up for writing. */
244: static void
245: screen_write_init(struct screen_write_ctx *ctx, struct screen *s)
1.1 nicm 246: {
1.109 nicm 247: memset(ctx, 0, sizeof *ctx);
1.92 nicm 248:
1.178 nicm 249: ctx->s = s;
1.92 nicm 250:
1.170 nicm 251: if (ctx->s->write_list == NULL)
252: screen_write_make_list(ctx->s);
1.193 nicm 253: ctx->item = screen_write_get_citem();
1.92 nicm 254:
1.122 nicm 255: ctx->scrolled = 0;
256: ctx->bg = 8;
1.178 nicm 257: }
258:
259: /* Initialize writing with a pane. */
260: void
261: screen_write_start_pane(struct screen_write_ctx *ctx, struct window_pane *wp,
262: struct screen *s)
263: {
264: if (s == NULL)
265: s = wp->screen;
266: screen_write_init(ctx, s);
267: ctx->wp = wp;
268:
269: if (log_get_level() != 0) {
270: log_debug("%s: size %ux%u, pane %%%u (at %u,%u)",
271: __func__, screen_size_x(ctx->s), screen_size_y(ctx->s),
272: wp->id, wp->xoff, wp->yoff);
273: }
274: }
275:
276: /* Initialize writing with a callback. */
277: void
278: screen_write_start_callback(struct screen_write_ctx *ctx, struct screen *s,
279: screen_write_init_ctx_cb cb, void *arg)
280: {
281: screen_write_init(ctx, s);
282:
283: ctx->init_ctx_cb = cb;
284: ctx->arg = arg;
285:
286: if (log_get_level() != 0) {
287: log_debug("%s: size %ux%u, with callback", __func__,
288: screen_size_x(ctx->s), screen_size_y(ctx->s));
289: }
290: }
291:
292: /* Initialize writing. */
293: void
294: screen_write_start(struct screen_write_ctx *ctx, struct screen *s)
295: {
296: screen_write_init(ctx, s);
1.122 nicm 297:
1.158 nicm 298: if (log_get_level() != 0) {
1.178 nicm 299: log_debug("%s: size %ux%u, no pane", __func__,
300: screen_size_x(ctx->s), screen_size_y(ctx->s));
1.139 nicm 301: }
1.1 nicm 302: }
303:
304: /* Finish writing. */
305: void
1.92 nicm 306: screen_write_stop(struct screen_write_ctx *ctx)
307: {
1.109 nicm 308: screen_write_collect_end(ctx);
1.164 nicm 309: screen_write_collect_flush(ctx, 0, __func__);
1.92 nicm 310:
1.193 nicm 311: screen_write_free_citem(ctx->item);
1.52 nicm 312: }
313:
314: /* Reset screen state. */
315: void
316: screen_write_reset(struct screen_write_ctx *ctx)
317: {
1.61 nicm 318: struct screen *s = ctx->s;
1.52 nicm 319:
1.61 nicm 320: screen_reset_tabs(s);
321: screen_write_scrollregion(ctx, 0, screen_size_y(s) - 1);
1.63 nicm 322:
1.141 nicm 323: s->mode = MODE_CURSOR | MODE_WRAP;
1.52 nicm 324:
1.99 nicm 325: screen_write_clearscreen(ctx, 8);
1.144 nicm 326: screen_write_set_cursor(ctx, 0, 0);
1.1 nicm 327: }
328:
329: /* Write character. */
330: void
1.86 nicm 331: screen_write_putc(struct screen_write_ctx *ctx, const struct grid_cell *gcp,
1.69 nicm 332: u_char ch)
1.1 nicm 333: {
1.86 nicm 334: struct grid_cell gc;
335:
336: memcpy(&gc, gcp, sizeof gc);
337:
338: utf8_set(&gc.data, ch);
339: screen_write_cell(ctx, &gc);
1.1 nicm 340: }
341:
1.2 nicm 342: /* Calculate string length. */
1.71 nicm 343: size_t
1.75 nicm 344: screen_write_strlen(const char *fmt, ...)
1.2 nicm 345: {
1.36 nicm 346: va_list ap;
347: char *msg;
1.76 nicm 348: struct utf8_data ud;
1.36 nicm 349: u_char *ptr;
350: size_t left, size = 0;
1.79 nicm 351: enum utf8_state more;
1.2 nicm 352:
353: va_start(ap, fmt);
354: xvasprintf(&msg, fmt, ap);
355: va_end(ap);
356:
357: ptr = msg;
358: while (*ptr != '\0') {
1.79 nicm 359: if (*ptr > 0x7f && utf8_open(&ud, *ptr) == UTF8_MORE) {
1.36 nicm 360: ptr++;
1.2 nicm 361:
362: left = strlen(ptr);
1.77 nicm 363: if (left < (size_t)ud.size - 1)
1.36 nicm 364: break;
1.79 nicm 365: while ((more = utf8_append(&ud, *ptr)) == UTF8_MORE)
1.2 nicm 366: ptr++;
1.36 nicm 367: ptr++;
368:
1.79 nicm 369: if (more == UTF8_DONE)
1.78 nicm 370: size += ud.width;
1.2 nicm 371: } else {
1.75 nicm 372: if (*ptr > 0x1f && *ptr < 0x7f)
373: size++;
1.2 nicm 374: ptr++;
375: }
1.7 ray 376: }
1.2 nicm 377:
1.56 nicm 378: free(msg);
1.2 nicm 379: return (size);
380: }
381:
1.179 nicm 382: /* Write string wrapped over lines. */
383: int
384: screen_write_text(struct screen_write_ctx *ctx, u_int cx, u_int width,
385: u_int lines, int more, const struct grid_cell *gcp, const char *fmt, ...)
386: {
387: struct screen *s = ctx->s;
388: va_list ap;
389: char *tmp;
390: u_int cy = s->cy, i, end, next, idx = 0, at, left;
391: struct utf8_data *text;
392: struct grid_cell gc;
393:
394: memcpy(&gc, gcp, sizeof gc);
395:
396: va_start(ap, fmt);
397: xvasprintf(&tmp, fmt, ap);
398: va_end(ap);
399:
400: text = utf8_fromcstr(tmp);
401: free(tmp);
402:
403: left = (cx + width) - s->cx;
404: for (;;) {
405: /* Find the end of what can fit on the line. */
406: at = 0;
407: for (end = idx; text[end].size != 0; end++) {
408: if (text[end].size == 1 && text[end].data[0] == '\n')
409: break;
410: if (at + text[end].width > left)
411: break;
412: at += text[end].width;
413: }
414:
415: /*
416: * If we're on a space, that's the end. If not, walk back to
417: * try and find one.
418: */
419: if (text[end].size == 0)
420: next = end;
421: else if (text[end].size == 1 && text[end].data[0] == '\n')
422: next = end + 1;
423: else if (text[end].size == 1 && text[end].data[0] == ' ')
424: next = end + 1;
425: else {
426: for (i = end; i > idx; i--) {
427: if (text[i].size == 1 && text[i].data[0] == ' ')
428: break;
429: }
430: if (i != idx) {
431: next = i + 1;
432: end = i;
433: } else
434: next = end;
435: }
436:
437: /* Print the line. */
438: for (i = idx; i < end; i++) {
439: utf8_copy(&gc.data, &text[i]);
440: screen_write_cell(ctx, &gc);
441: }
442:
443: /* If at the bottom, stop. */
444: idx = next;
445: if (s->cy == cy + lines - 1 || text[idx].size == 0)
446: break;
447:
448: screen_write_cursormove(ctx, cx, s->cy + 1, 0);
449: left = width;
450: }
451:
452: /*
453: * Fail if on the last line and there is more to come or at the end, or
454: * if the text was not entirely consumed.
455: */
456: if ((s->cy == cy + lines - 1 && (!more || s->cx == cx + width)) ||
457: text[idx].size != 0) {
458: free(text);
459: return (0);
460: }
461: free(text);
462:
463: /*
464: * If no more to come, move to the next line. Otherwise, leave on
465: * the same line (except if at the end).
466: */
467: if (!more || s->cx == cx + width)
468: screen_write_cursormove(ctx, cx, s->cy + 1, 0);
469: return (1);
470: }
471:
472: /* Write simple string (no maximum length). */
1.71 nicm 473: void
1.86 nicm 474: screen_write_puts(struct screen_write_ctx *ctx, const struct grid_cell *gcp,
1.71 nicm 475: const char *fmt, ...)
1.1 nicm 476: {
477: va_list ap;
478:
479: va_start(ap, fmt);
1.86 nicm 480: screen_write_vnputs(ctx, -1, gcp, fmt, ap);
1.2 nicm 481: va_end(ap);
482: }
483:
484: /* Write string with length limit (-1 for unlimited). */
1.71 nicm 485: void
486: screen_write_nputs(struct screen_write_ctx *ctx, ssize_t maxlen,
1.86 nicm 487: const struct grid_cell *gcp, const char *fmt, ...)
1.2 nicm 488: {
489: va_list ap;
490:
491: va_start(ap, fmt);
1.86 nicm 492: screen_write_vnputs(ctx, maxlen, gcp, fmt, ap);
1.2 nicm 493: va_end(ap);
494: }
495:
496: void
1.3 nicm 497: screen_write_vnputs(struct screen_write_ctx *ctx, ssize_t maxlen,
1.86 nicm 498: const struct grid_cell *gcp, const char *fmt, va_list ap)
1.2 nicm 499: {
1.86 nicm 500: struct grid_cell gc;
501: struct utf8_data *ud = &gc.data;
1.36 nicm 502: char *msg;
503: u_char *ptr;
504: size_t left, size = 0;
1.79 nicm 505: enum utf8_state more;
1.2 nicm 506:
1.86 nicm 507: memcpy(&gc, gcp, sizeof gc);
1.1 nicm 508: xvasprintf(&msg, fmt, ap);
509:
1.2 nicm 510: ptr = msg;
511: while (*ptr != '\0') {
1.86 nicm 512: if (*ptr > 0x7f && utf8_open(ud, *ptr) == UTF8_MORE) {
1.36 nicm 513: ptr++;
1.2 nicm 514:
515: left = strlen(ptr);
1.86 nicm 516: if (left < (size_t)ud->size - 1)
1.36 nicm 517: break;
1.86 nicm 518: while ((more = utf8_append(ud, *ptr)) == UTF8_MORE)
1.2 nicm 519: ptr++;
1.36 nicm 520: ptr++;
1.7 ray 521:
1.86 nicm 522: if (more != UTF8_DONE)
523: continue;
524: if (maxlen > 0 && size + ud->width > (size_t)maxlen) {
525: while (size < (size_t)maxlen) {
526: screen_write_putc(ctx, &gc, ' ');
527: size++;
1.2 nicm 528: }
1.86 nicm 529: break;
1.2 nicm 530: }
1.86 nicm 531: size += ud->width;
532: screen_write_cell(ctx, &gc);
1.2 nicm 533: } else {
1.86 nicm 534: if (maxlen > 0 && size + 1 > (size_t)maxlen)
1.2 nicm 535: break;
536:
1.57 nicm 537: if (*ptr == '\001')
1.86 nicm 538: gc.attr ^= GRID_ATTR_CHARSET;
1.187 nicm 539: else if (*ptr == '\n') {
540: screen_write_linefeed(ctx, 0, 8);
541: screen_write_carriagereturn(ctx);
542: } else if (*ptr > 0x1f && *ptr < 0x7f) {
1.57 nicm 543: size++;
1.86 nicm 544: screen_write_putc(ctx, &gc, *ptr);
1.75 nicm 545: }
1.24 nicm 546: ptr++;
547: }
548: }
549:
1.56 nicm 550: free(msg);
1.1 nicm 551: }
552:
1.132 nicm 553: /*
1.176 nicm 554: * Copy from another screen but without the selection stuff. Assumes the target
555: * region is already big enough.
1.132 nicm 556: */
557: void
558: screen_write_fast_copy(struct screen_write_ctx *ctx, struct screen *src,
559: u_int px, u_int py, u_int nx, u_int ny)
560: {
561: struct screen *s = ctx->s;
562: struct grid *gd = src->grid;
563: struct grid_cell gc;
564: u_int xx, yy, cx, cy;
1.96 nicm 565:
1.132 nicm 566: if (nx == 0 || ny == 0)
567: return;
568:
569: cy = s->cy;
570: for (yy = py; yy < py + ny; yy++) {
1.134 nicm 571: if (yy >= gd->hsize + gd->sy)
572: break;
1.132 nicm 573: cx = s->cx;
574: for (xx = px; xx < px + nx; xx++) {
1.137 nicm 575: if (xx >= grid_get_line(gd, yy)->cellsize)
1.132 nicm 576: break;
577: grid_get_cell(gd, xx, yy, &gc);
1.135 nicm 578: if (xx + gc.data.width > px + nx)
579: break;
1.150 nicm 580: grid_view_set_cell(ctx->s->grid, cx, cy, &gc);
1.132 nicm 581: cx++;
582: }
1.1 nicm 583: cy++;
1.125 nicm 584: }
585: }
586:
1.129 nicm 587: /* Draw a horizontal line on screen. */
1.125 nicm 588: void
1.129 nicm 589: screen_write_hline(struct screen_write_ctx *ctx, u_int nx, int left, int right)
1.125 nicm 590: {
591: struct screen *s = ctx->s;
592: struct grid_cell gc;
593: u_int cx, cy, i;
594:
595: cx = s->cx;
596: cy = s->cy;
597:
598: memcpy(&gc, &grid_default_cell, sizeof gc);
599: gc.attr |= GRID_ATTR_CHARSET;
600:
601: screen_write_putc(ctx, &gc, left ? 't' : 'q');
602: for (i = 1; i < nx - 1; i++)
603: screen_write_putc(ctx, &gc, 'q');
604: screen_write_putc(ctx, &gc, right ? 'u' : 'q');
1.129 nicm 605:
1.144 nicm 606: screen_write_set_cursor(ctx, cx, cy);
1.129 nicm 607: }
608:
1.195 nicm 609: /* Draw a vertical line on screen. */
1.129 nicm 610: void
1.130 nicm 611: screen_write_vline(struct screen_write_ctx *ctx, u_int ny, int top, int bottom)
1.129 nicm 612: {
613: struct screen *s = ctx->s;
614: struct grid_cell gc;
615: u_int cx, cy, i;
616:
617: cx = s->cx;
618: cy = s->cy;
619:
620: memcpy(&gc, &grid_default_cell, sizeof gc);
621: gc.attr |= GRID_ATTR_CHARSET;
622:
623: screen_write_putc(ctx, &gc, top ? 'w' : 'x');
624: for (i = 1; i < ny - 1; i++) {
1.144 nicm 625: screen_write_set_cursor(ctx, cx, cy + i);
1.129 nicm 626: screen_write_putc(ctx, &gc, 'x');
627: }
1.144 nicm 628: screen_write_set_cursor(ctx, cx, cy + ny - 1);
1.129 nicm 629: screen_write_putc(ctx, &gc, bottom ? 'v' : 'x');
1.152 nicm 630:
631: screen_write_set_cursor(ctx, cx, cy);
632: }
633:
634: /* Draw a menu on screen. */
635: void
1.161 nicm 636: screen_write_menu(struct screen_write_ctx *ctx, struct menu *menu,
637: int choice, const struct grid_cell *choice_gc)
1.152 nicm 638: {
639: struct screen *s = ctx->s;
1.161 nicm 640: struct grid_cell default_gc;
641: const struct grid_cell *gc = &default_gc;
1.152 nicm 642: u_int cx, cy, i, j;
1.153 nicm 643: const char *name;
1.152 nicm 644:
645: cx = s->cx;
646: cy = s->cy;
647:
1.161 nicm 648: memcpy(&default_gc, &grid_default_cell, sizeof default_gc);
1.152 nicm 649:
1.201 nicm 650: screen_write_box(ctx, menu->width + 4, menu->count + 2,
1.202 nicm 651: BOX_LINES_DEFAULT, &default_gc, menu->title);
1.152 nicm 652:
653: for (i = 0; i < menu->count; i++) {
1.153 nicm 654: name = menu->items[i].name;
655: if (name == NULL) {
1.152 nicm 656: screen_write_cursormove(ctx, cx, cy + 1 + i, 0);
657: screen_write_hline(ctx, menu->width + 4, 1, 1);
658: } else {
1.153 nicm 659: if (choice >= 0 && i == (u_int)choice && *name != '-')
1.161 nicm 660: gc = choice_gc;
1.152 nicm 661: screen_write_cursormove(ctx, cx + 2, cy + 1 + i, 0);
662: for (j = 0; j < menu->width; j++)
1.161 nicm 663: screen_write_putc(ctx, gc, ' ');
1.152 nicm 664: screen_write_cursormove(ctx, cx + 2, cy + 1 + i, 0);
1.153 nicm 665: if (*name == '-') {
666: name++;
1.161 nicm 667: default_gc.attr |= GRID_ATTR_DIM;
668: format_draw(ctx, gc, menu->width, name, NULL);
669: default_gc.attr &= ~GRID_ATTR_DIM;
1.153 nicm 670: } else
1.161 nicm 671: format_draw(ctx, gc, menu->width, name, NULL);
672: gc = &default_gc;
1.152 nicm 673: }
674: }
1.125 nicm 675:
1.144 nicm 676: screen_write_set_cursor(ctx, cx, cy);
1.125 nicm 677: }
678:
1.201 nicm 679: static void
680: screen_write_box_border_set(enum box_lines box_lines, int cell_type,
681: struct grid_cell *gc)
682: {
683: switch (box_lines) {
684: case BOX_LINES_NONE:
685: break;
686: case BOX_LINES_DOUBLE:
687: gc->attr &= ~GRID_ATTR_CHARSET;
688: utf8_copy(&gc->data, tty_acs_double_borders(cell_type));
689: break;
690: case BOX_LINES_HEAVY:
691: gc->attr &= ~GRID_ATTR_CHARSET;
692: utf8_copy(&gc->data, tty_acs_heavy_borders(cell_type));
693: break;
694: case BOX_LINES_ROUNDED:
695: gc->attr &= ~GRID_ATTR_CHARSET;
696: utf8_copy(&gc->data, tty_acs_rounded_borders(cell_type));
697: break;
698: case BOX_LINES_SIMPLE:
699: gc->attr &= ~GRID_ATTR_CHARSET;
700: utf8_set(&gc->data, SIMPLE_BORDERS[cell_type]);
701: break;
702: case BOX_LINES_PADDED:
703: gc->attr &= ~GRID_ATTR_CHARSET;
704: utf8_set(&gc->data, PADDED_BORDERS[cell_type]);
705: break;
706: case BOX_LINES_SINGLE:
707: case BOX_LINES_DEFAULT:
708: gc->attr |= GRID_ATTR_CHARSET;
709: utf8_set(&gc->data, CELL_BORDERS[cell_type]);
710: break;
711: }
712: }
713:
1.125 nicm 714: /* Draw a box on screen. */
715: void
1.200 nicm 716: screen_write_box(struct screen_write_ctx *ctx, u_int nx, u_int ny,
1.202 nicm 717: enum box_lines lines, const struct grid_cell *gcp, const char *title)
1.125 nicm 718: {
719: struct screen *s = ctx->s;
1.200 nicm 720: struct grid_cell gc;
1.125 nicm 721: u_int cx, cy, i;
722:
723: cx = s->cx;
724: cy = s->cy;
725:
1.200 nicm 726: if (gcp != NULL)
727: memcpy(&gc, gcp, sizeof gc);
728: else
729: memcpy(&gc, &grid_default_cell, sizeof gc);
1.202 nicm 730:
1.125 nicm 731: gc.attr |= GRID_ATTR_CHARSET;
1.197 nicm 732: gc.flags |= GRID_FLAG_NOPALETTE;
1.125 nicm 733:
1.201 nicm 734: /* Draw top border */
1.202 nicm 735: screen_write_box_border_set(lines, CELL_TOPLEFT, &gc);
1.201 nicm 736: screen_write_cell(ctx, &gc);
1.202 nicm 737: screen_write_box_border_set(lines, CELL_LEFTRIGHT, &gc);
1.125 nicm 738: for (i = 1; i < nx - 1; i++)
1.201 nicm 739: screen_write_cell(ctx, &gc);
1.202 nicm 740: screen_write_box_border_set(lines, CELL_TOPRIGHT, &gc);
1.201 nicm 741: screen_write_cell(ctx, &gc);
1.125 nicm 742:
1.201 nicm 743: /* Draw bottom border */
1.144 nicm 744: screen_write_set_cursor(ctx, cx, cy + ny - 1);
1.202 nicm 745: screen_write_box_border_set(lines, CELL_BOTTOMLEFT, &gc);
1.201 nicm 746: screen_write_cell(ctx, &gc);
1.202 nicm 747: screen_write_box_border_set(lines, CELL_LEFTRIGHT, &gc);
1.125 nicm 748: for (i = 1; i < nx - 1; i++)
1.201 nicm 749: screen_write_cell(ctx, &gc);
1.202 nicm 750: screen_write_box_border_set(lines, CELL_BOTTOMRIGHT, &gc);
1.201 nicm 751: screen_write_cell(ctx, &gc);
1.125 nicm 752:
1.201 nicm 753: /* Draw sides */
1.202 nicm 754: screen_write_box_border_set(lines, CELL_TOPBOTTOM, &gc);
1.125 nicm 755: for (i = 1; i < ny - 1; i++) {
1.201 nicm 756: /* left side */
1.144 nicm 757: screen_write_set_cursor(ctx, cx, cy + i);
1.201 nicm 758: screen_write_cell(ctx, &gc);
759: /* right side */
1.144 nicm 760: screen_write_set_cursor(ctx, cx + nx - 1, cy + i);
1.201 nicm 761: screen_write_cell(ctx, &gc);
1.202 nicm 762: }
763:
764: if (title != NULL) {
765: gc.attr &= ~GRID_ATTR_CHARSET;
766: screen_write_cursormove(ctx, cx + 2, cy, 0);
767: format_draw(ctx, &gc, nx - 4, title, NULL);
1.125 nicm 768: }
769:
1.144 nicm 770: screen_write_set_cursor(ctx, cx, cy);
1.125 nicm 771: }
772:
1.132 nicm 773: /*
774: * Write a preview version of a window. Assumes target area is big enough and
775: * already cleared.
776: */
1.125 nicm 777: void
778: screen_write_preview(struct screen_write_ctx *ctx, struct screen *src, u_int nx,
779: u_int ny)
780: {
781: struct screen *s = ctx->s;
782: struct grid_cell gc;
783: u_int cx, cy, px, py;
784:
785: cx = s->cx;
786: cy = s->cy;
787:
788: /*
789: * If the cursor is on, pick the area around the cursor, otherwise use
790: * the top left.
791: */
792: if (src->mode & MODE_CURSOR) {
793: px = src->cx;
794: if (px < nx / 3)
795: px = 0;
796: else
797: px = px - nx / 3;
798: if (px + nx > screen_size_x(src)) {
799: if (nx > screen_size_x(src))
800: px = 0;
801: else
802: px = screen_size_x(src) - nx;
803: }
804: py = src->cy;
805: if (py < ny / 3)
806: py = 0;
807: else
808: py = py - ny / 3;
809: if (py + ny > screen_size_y(src)) {
810: if (ny > screen_size_y(src))
811: py = 0;
812: else
813: py = screen_size_y(src) - ny;
814: }
815: } else {
816: px = 0;
817: py = 0;
818: }
819:
1.132 nicm 820: screen_write_fast_copy(ctx, src, px, src->grid->hsize + py, nx, ny);
1.125 nicm 821:
822: if (src->mode & MODE_CURSOR) {
823: grid_view_get_cell(src->grid, src->cx, src->cy, &gc);
824: gc.attr |= GRID_ATTR_REVERSE;
1.144 nicm 825: screen_write_set_cursor(ctx, cx + (src->cx - px),
1.125 nicm 826: cy + (src->cy - py));
827: screen_write_cell(ctx, &gc);
1.1 nicm 828: }
829: }
830:
1.61 nicm 831: /* Set a mode. */
832: void
833: screen_write_mode_set(struct screen_write_ctx *ctx, int mode)
834: {
835: struct screen *s = ctx->s;
836:
837: s->mode |= mode;
1.194 nicm 838:
839: if (log_get_level() != 0)
840: log_debug("%s: %s", __func__, screen_mode_to_string(mode));
1.61 nicm 841: }
842:
843: /* Clear a mode. */
844: void
845: screen_write_mode_clear(struct screen_write_ctx *ctx, int mode)
846: {
847: struct screen *s = ctx->s;
848:
849: s->mode &= ~mode;
1.194 nicm 850:
851: if (log_get_level() != 0)
852: log_debug("%s: %s", __func__, screen_mode_to_string(mode));
1.61 nicm 853: }
854:
1.1 nicm 855: /* Cursor up by ny. */
856: void
857: screen_write_cursorup(struct screen_write_ctx *ctx, u_int ny)
858: {
859: struct screen *s = ctx->s;
1.139 nicm 860: u_int cx = s->cx, cy = s->cy;
1.1 nicm 861:
862: if (ny == 0)
863: ny = 1;
864:
1.139 nicm 865: if (cy < s->rupper) {
1.12 nicm 866: /* Above region. */
1.139 nicm 867: if (ny > cy)
868: ny = cy;
1.12 nicm 869: } else {
870: /* Below region. */
1.139 nicm 871: if (ny > cy - s->rupper)
872: ny = cy - s->rupper;
1.12 nicm 873: }
1.139 nicm 874: if (cx == screen_size_x(s))
875: cx--;
876:
877: cy -= ny;
1.1 nicm 878:
1.139 nicm 879: screen_write_set_cursor(ctx, cx, cy);
1.1 nicm 880: }
881:
882: /* Cursor down by ny. */
883: void
884: screen_write_cursordown(struct screen_write_ctx *ctx, u_int ny)
885: {
886: struct screen *s = ctx->s;
1.139 nicm 887: u_int cx = s->cx, cy = s->cy;
1.1 nicm 888:
889: if (ny == 0)
890: ny = 1;
891:
1.139 nicm 892: if (cy > s->rlower) {
1.12 nicm 893: /* Below region. */
1.139 nicm 894: if (ny > screen_size_y(s) - 1 - cy)
895: ny = screen_size_y(s) - 1 - cy;
1.12 nicm 896: } else {
897: /* Above region. */
1.139 nicm 898: if (ny > s->rlower - cy)
899: ny = s->rlower - cy;
1.12 nicm 900: }
1.139 nicm 901: if (cx == screen_size_x(s))
902: cx--;
903: else if (ny == 0)
1.1 nicm 904: return;
905:
1.139 nicm 906: cy += ny;
907:
908: screen_write_set_cursor(ctx, cx, cy);
1.1 nicm 909: }
910:
1.101 nicm 911: /* Cursor right by nx. */
1.1 nicm 912: void
913: screen_write_cursorright(struct screen_write_ctx *ctx, u_int nx)
914: {
915: struct screen *s = ctx->s;
1.139 nicm 916: u_int cx = s->cx, cy = s->cy;
1.1 nicm 917:
918: if (nx == 0)
919: nx = 1;
920:
1.139 nicm 921: if (nx > screen_size_x(s) - 1 - cx)
922: nx = screen_size_x(s) - 1 - cx;
1.1 nicm 923: if (nx == 0)
924: return;
925:
1.139 nicm 926: cx += nx;
927:
928: screen_write_set_cursor(ctx, cx, cy);
1.1 nicm 929: }
930:
931: /* Cursor left by nx. */
932: void
933: screen_write_cursorleft(struct screen_write_ctx *ctx, u_int nx)
934: {
935: struct screen *s = ctx->s;
1.139 nicm 936: u_int cx = s->cx, cy = s->cy;
1.1 nicm 937:
938: if (nx == 0)
939: nx = 1;
940:
1.139 nicm 941: if (nx > cx)
942: nx = cx;
1.1 nicm 943: if (nx == 0)
944: return;
945:
1.139 nicm 946: cx -= nx;
947:
948: screen_write_set_cursor(ctx, cx, cy);
1.5 nicm 949: }
950:
1.29 nicm 951: /* Backspace; cursor left unless at start of wrapped line when can move up. */
952: void
953: screen_write_backspace(struct screen_write_ctx *ctx)
954: {
955: struct screen *s = ctx->s;
956: struct grid_line *gl;
1.139 nicm 957: u_int cx = s->cx, cy = s->cy;
1.29 nicm 958:
1.139 nicm 959: if (cx == 0) {
960: if (cy == 0)
1.29 nicm 961: return;
1.139 nicm 962: gl = grid_get_line(s->grid, s->grid->hsize + cy - 1);
1.29 nicm 963: if (gl->flags & GRID_LINE_WRAPPED) {
1.139 nicm 964: cy--;
965: cx = screen_size_x(s) - 1;
1.29 nicm 966: }
967: } else
1.139 nicm 968: cx--;
969:
970: screen_write_set_cursor(ctx, cx, cy);
1.29 nicm 971: }
972:
1.5 nicm 973: /* VT100 alignment test. */
974: void
975: screen_write_alignmenttest(struct screen_write_ctx *ctx)
976: {
977: struct screen *s = ctx->s;
1.17 nicm 978: struct tty_ctx ttyctx;
1.5 nicm 979: struct grid_cell gc;
980: u_int xx, yy;
981:
982: memcpy(&gc, &grid_default_cell, sizeof gc);
1.77 nicm 983: utf8_set(&gc.data, 'E');
1.7 ray 984:
1.5 nicm 985: for (yy = 0; yy < screen_size_y(s); yy++) {
986: for (xx = 0; xx < screen_size_x(s); xx++)
987: grid_view_set_cell(s->grid, xx, yy, &gc);
988: }
1.7 ray 989:
1.139 nicm 990: screen_write_set_cursor(ctx, 0, 0);
1.5 nicm 991:
992: s->rupper = 0;
993: s->rlower = screen_size_y(s) - 1;
1.143 nicm 994:
1.163 nicm 995: screen_write_initctx(ctx, &ttyctx, 1);
1.5 nicm 996:
1.109 nicm 997: screen_write_collect_clear(ctx, 0, screen_size_y(s) - 1);
1.17 nicm 998: tty_write(tty_cmd_alignmenttest, &ttyctx);
1.1 nicm 999: }
1000:
1001: /* Insert nx characters. */
1002: void
1.99 nicm 1003: screen_write_insertcharacter(struct screen_write_ctx *ctx, u_int nx, u_int bg)
1.1 nicm 1004: {
1005: struct screen *s = ctx->s;
1.17 nicm 1006: struct tty_ctx ttyctx;
1.1 nicm 1007:
1008: if (nx == 0)
1009: nx = 1;
1010:
1.9 nicm 1011: if (nx > screen_size_x(s) - s->cx)
1012: nx = screen_size_x(s) - s->cx;
1.1 nicm 1013: if (nx == 0)
1014: return;
1015:
1.107 nicm 1016: if (s->cx > screen_size_x(s) - 1)
1017: return;
1018:
1.163 nicm 1019: screen_write_initctx(ctx, &ttyctx, 0);
1.107 nicm 1020: ttyctx.bg = bg;
1.1 nicm 1021:
1.107 nicm 1022: grid_view_insert_cells(s->grid, s->cx, s->cy, nx, bg);
1.1 nicm 1023:
1.164 nicm 1024: screen_write_collect_flush(ctx, 0, __func__);
1.17 nicm 1025: ttyctx.num = nx;
1026: tty_write(tty_cmd_insertcharacter, &ttyctx);
1.1 nicm 1027: }
1028:
1029: /* Delete nx characters. */
1030: void
1.99 nicm 1031: screen_write_deletecharacter(struct screen_write_ctx *ctx, u_int nx, u_int bg)
1.1 nicm 1032: {
1033: struct screen *s = ctx->s;
1.17 nicm 1034: struct tty_ctx ttyctx;
1.1 nicm 1035:
1036: if (nx == 0)
1037: nx = 1;
1038:
1.9 nicm 1039: if (nx > screen_size_x(s) - s->cx)
1040: nx = screen_size_x(s) - s->cx;
1.1 nicm 1041: if (nx == 0)
1042: return;
1043:
1.107 nicm 1044: if (s->cx > screen_size_x(s) - 1)
1045: return;
1046:
1.163 nicm 1047: screen_write_initctx(ctx, &ttyctx, 0);
1.107 nicm 1048: ttyctx.bg = bg;
1.1 nicm 1049:
1.107 nicm 1050: grid_view_delete_cells(s->grid, s->cx, s->cy, nx, bg);
1.1 nicm 1051:
1.164 nicm 1052: screen_write_collect_flush(ctx, 0, __func__);
1.17 nicm 1053: ttyctx.num = nx;
1054: tty_write(tty_cmd_deletecharacter, &ttyctx);
1.59 nicm 1055: }
1056:
1057: /* Clear nx characters. */
1058: void
1.121 nicm 1059: screen_write_clearcharacter(struct screen_write_ctx *ctx, u_int nx, u_int bg)
1.59 nicm 1060: {
1061: struct screen *s = ctx->s;
1062: struct tty_ctx ttyctx;
1063:
1064: if (nx == 0)
1065: nx = 1;
1066:
1067: if (nx > screen_size_x(s) - s->cx)
1068: nx = screen_size_x(s) - s->cx;
1069: if (nx == 0)
1070: return;
1071:
1.107 nicm 1072: if (s->cx > screen_size_x(s) - 1)
1073: return;
1074:
1.163 nicm 1075: screen_write_initctx(ctx, &ttyctx, 0);
1.121 nicm 1076: ttyctx.bg = bg;
1.59 nicm 1077:
1.124 nicm 1078: grid_view_clear(s->grid, s->cx, s->cy, nx, 1, bg);
1.59 nicm 1079:
1.164 nicm 1080: screen_write_collect_flush(ctx, 0, __func__);
1.59 nicm 1081: ttyctx.num = nx;
1082: tty_write(tty_cmd_clearcharacter, &ttyctx);
1.1 nicm 1083: }
1084:
1085: /* Insert ny lines. */
1086: void
1.99 nicm 1087: screen_write_insertline(struct screen_write_ctx *ctx, u_int ny, u_int bg)
1.1 nicm 1088: {
1089: struct screen *s = ctx->s;
1.107 nicm 1090: struct grid *gd = s->grid;
1.17 nicm 1091: struct tty_ctx ttyctx;
1.1 nicm 1092:
1093: if (ny == 0)
1094: ny = 1;
1095:
1.11 nicm 1096: if (s->cy < s->rupper || s->cy > s->rlower) {
1097: if (ny > screen_size_y(s) - s->cy)
1098: ny = screen_size_y(s) - s->cy;
1099: if (ny == 0)
1100: return;
1101:
1.163 nicm 1102: screen_write_initctx(ctx, &ttyctx, 1);
1.107 nicm 1103: ttyctx.bg = bg;
1.11 nicm 1104:
1.107 nicm 1105: grid_view_insert_lines(gd, s->cy, ny, bg);
1.11 nicm 1106:
1.164 nicm 1107: screen_write_collect_flush(ctx, 0, __func__);
1.17 nicm 1108: ttyctx.num = ny;
1109: tty_write(tty_cmd_insertline, &ttyctx);
1.11 nicm 1110: return;
1111: }
1112:
1113: if (ny > s->rlower + 1 - s->cy)
1114: ny = s->rlower + 1 - s->cy;
1.1 nicm 1115: if (ny == 0)
1116: return;
1.41 nicm 1117:
1.163 nicm 1118: screen_write_initctx(ctx, &ttyctx, 1);
1.107 nicm 1119: ttyctx.bg = bg;
1.1 nicm 1120:
1121: if (s->cy < s->rupper || s->cy > s->rlower)
1.107 nicm 1122: grid_view_insert_lines(gd, s->cy, ny, bg);
1123: else
1124: grid_view_insert_lines_region(gd, s->rlower, s->cy, ny, bg);
1.1 nicm 1125:
1.164 nicm 1126: screen_write_collect_flush(ctx, 0, __func__);
1127:
1.17 nicm 1128: ttyctx.num = ny;
1129: tty_write(tty_cmd_insertline, &ttyctx);
1.1 nicm 1130: }
1131:
1132: /* Delete ny lines. */
1133: void
1.99 nicm 1134: screen_write_deleteline(struct screen_write_ctx *ctx, u_int ny, u_int bg)
1.1 nicm 1135: {
1136: struct screen *s = ctx->s;
1.107 nicm 1137: struct grid *gd = s->grid;
1.17 nicm 1138: struct tty_ctx ttyctx;
1.1 nicm 1139:
1140: if (ny == 0)
1141: ny = 1;
1142:
1.11 nicm 1143: if (s->cy < s->rupper || s->cy > s->rlower) {
1144: if (ny > screen_size_y(s) - s->cy)
1145: ny = screen_size_y(s) - s->cy;
1146: if (ny == 0)
1147: return;
1148:
1.163 nicm 1149: screen_write_initctx(ctx, &ttyctx, 1);
1.107 nicm 1150: ttyctx.bg = bg;
1.11 nicm 1151:
1.107 nicm 1152: grid_view_delete_lines(gd, s->cy, ny, bg);
1.11 nicm 1153:
1.164 nicm 1154: screen_write_collect_flush(ctx, 0, __func__);
1.17 nicm 1155: ttyctx.num = ny;
1156: tty_write(tty_cmd_deleteline, &ttyctx);
1.11 nicm 1157: return;
1158: }
1.41 nicm 1159:
1.11 nicm 1160: if (ny > s->rlower + 1 - s->cy)
1161: ny = s->rlower + 1 - s->cy;
1.1 nicm 1162: if (ny == 0)
1163: return;
1164:
1.163 nicm 1165: screen_write_initctx(ctx, &ttyctx, 1);
1.107 nicm 1166: ttyctx.bg = bg;
1.1 nicm 1167:
1168: if (s->cy < s->rupper || s->cy > s->rlower)
1.107 nicm 1169: grid_view_delete_lines(gd, s->cy, ny, bg);
1170: else
1171: grid_view_delete_lines_region(gd, s->rlower, s->cy, ny, bg);
1.1 nicm 1172:
1.164 nicm 1173: screen_write_collect_flush(ctx, 0, __func__);
1.17 nicm 1174: ttyctx.num = ny;
1175: tty_write(tty_cmd_deleteline, &ttyctx);
1.1 nicm 1176: }
1177:
1178: /* Clear line at cursor. */
1179: void
1.99 nicm 1180: screen_write_clearline(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1181: {
1.193 nicm 1182: struct screen *s = ctx->s;
1183: struct grid_line *gl;
1184: u_int sx = screen_size_x(s);
1185: struct screen_write_citem *ci = ctx->item;
1.1 nicm 1186:
1.137 nicm 1187: gl = grid_get_line(s->grid, s->grid->hsize + s->cy);
1.140 nicm 1188: if (gl->cellsize == 0 && COLOUR_DEFAULT(bg))
1.92 nicm 1189: return;
1.1 nicm 1190:
1.99 nicm 1191: grid_view_clear(s->grid, 0, s->cy, sx, 1, bg);
1192:
1.109 nicm 1193: screen_write_collect_clear(ctx, s->cy, 1);
1.193 nicm 1194: ci->x = 0;
1195: ci->used = sx;
1196: ci->type = CLEAR;
1197: ci->bg = bg;
1198: TAILQ_INSERT_TAIL(&ctx->s->write_list[s->cy].items, ci, entry);
1199: ctx->item = screen_write_get_citem();
1.1 nicm 1200: }
1201:
1202: /* Clear to end of line from cursor. */
1203: void
1.99 nicm 1204: screen_write_clearendofline(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1205: {
1.193 nicm 1206: struct screen *s = ctx->s;
1207: struct grid_line *gl;
1208: u_int sx = screen_size_x(s);
1209: struct screen_write_citem *ci = ctx->item, *before;
1.165 nicm 1210:
1211: if (s->cx == 0) {
1212: screen_write_clearline(ctx, bg);
1213: return;
1214: }
1.1 nicm 1215:
1.137 nicm 1216: gl = grid_get_line(s->grid, s->grid->hsize + s->cy);
1.140 nicm 1217: if (s->cx > sx - 1 || (s->cx >= gl->cellsize && COLOUR_DEFAULT(bg)))
1.92 nicm 1218: return;
1.108 nicm 1219:
1.99 nicm 1220: grid_view_clear(s->grid, s->cx, s->cy, sx - s->cx, 1, bg);
1221:
1.193 nicm 1222: before = screen_write_collect_trim(ctx, s->cy, s->cx, sx - s->cx, NULL);
1.186 nicm 1223: ci->x = s->cx;
1.193 nicm 1224: ci->used = sx - s->cx;
1225: ci->type = CLEAR;
1.186 nicm 1226: ci->bg = bg;
1.193 nicm 1227: if (before == NULL)
1228: TAILQ_INSERT_TAIL(&ctx->s->write_list[s->cy].items, ci, entry);
1229: else
1230: TAILQ_INSERT_BEFORE(before, ci, entry);
1231: ctx->item = screen_write_get_citem();
1.1 nicm 1232: }
1233:
1234: /* Clear to start of line from cursor. */
1235: void
1.99 nicm 1236: screen_write_clearstartofline(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1237: {
1.165 nicm 1238: struct screen *s = ctx->s;
1.193 nicm 1239: u_int sx = screen_size_x(s);
1240: struct screen_write_citem *ci = ctx->item, *before;
1.165 nicm 1241:
1242: if (s->cx >= sx - 1) {
1243: screen_write_clearline(ctx, bg);
1244: return;
1245: }
1.1 nicm 1246:
1.109 nicm 1247: if (s->cx > sx - 1)
1.99 nicm 1248: grid_view_clear(s->grid, 0, s->cy, sx, 1, bg);
1.109 nicm 1249: else
1.99 nicm 1250: grid_view_clear(s->grid, 0, s->cy, s->cx + 1, 1, bg);
1.1 nicm 1251:
1.193 nicm 1252: before = screen_write_collect_trim(ctx, s->cy, 0, s->cx + 1, NULL);
1253: ci->x = 0;
1254: ci->used = s->cx + 1;
1255: ci->type = CLEAR;
1.186 nicm 1256: ci->bg = bg;
1.193 nicm 1257: if (before == NULL)
1258: TAILQ_INSERT_TAIL(&ctx->s->write_list[s->cy].items, ci, entry);
1259: else
1260: TAILQ_INSERT_BEFORE(before, ci, entry);
1261: ctx->item = screen_write_get_citem();
1.1 nicm 1262: }
1263:
1.101 nicm 1264: /* Move cursor to px,py. */
1.1 nicm 1265: void
1.147 nicm 1266: screen_write_cursormove(struct screen_write_ctx *ctx, int px, int py,
1267: int origin)
1.1 nicm 1268: {
1269: struct screen *s = ctx->s;
1270:
1.147 nicm 1271: if (origin && py != -1 && (s->mode & MODE_ORIGIN)) {
1.146 nicm 1272: if ((u_int)py > s->rlower - s->rupper)
1.144 nicm 1273: py = s->rlower;
1274: else
1275: py += s->rupper;
1276: }
1.145 nicm 1277:
1.146 nicm 1278: if (px != -1 && (u_int)px > screen_size_x(s) - 1)
1.145 nicm 1279: px = screen_size_x(s) - 1;
1.146 nicm 1280: if (py != -1 && (u_int)py > screen_size_y(s) - 1)
1.145 nicm 1281: py = screen_size_y(s) - 1;
1.1 nicm 1282:
1.193 nicm 1283: log_debug("%s: from %u,%u to %u,%u", __func__, s->cx, s->cy, px, py);
1.139 nicm 1284: screen_write_set_cursor(ctx, px, py);
1.1 nicm 1285: }
1286:
1.101 nicm 1287: /* Reverse index (up with scroll). */
1.1 nicm 1288: void
1.122 nicm 1289: screen_write_reverseindex(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1290: {
1291: struct screen *s = ctx->s;
1.17 nicm 1292: struct tty_ctx ttyctx;
1.1 nicm 1293:
1.165 nicm 1294: if (s->cy == s->rupper) {
1295: grid_view_scroll_region_down(s->grid, s->rupper, s->rlower, bg);
1296: screen_write_collect_flush(ctx, 0, __func__);
1297:
1298: screen_write_initctx(ctx, &ttyctx, 1);
1299: ttyctx.bg = bg;
1.1 nicm 1300:
1.165 nicm 1301: tty_write(tty_cmd_reverseindex, &ttyctx);
1302: } else if (s->cy > 0)
1.139 nicm 1303: screen_write_set_cursor(ctx, -1, s->cy - 1);
1.1 nicm 1304:
1305: }
1306:
1307: /* Set scroll region. */
1308: void
1.83 nicm 1309: screen_write_scrollregion(struct screen_write_ctx *ctx, u_int rupper,
1310: u_int rlower)
1.1 nicm 1311: {
1312: struct screen *s = ctx->s;
1313:
1314: if (rupper > screen_size_y(s) - 1)
1315: rupper = screen_size_y(s) - 1;
1316: if (rlower > screen_size_y(s) - 1)
1317: rlower = screen_size_y(s) - 1;
1.13 nicm 1318: if (rupper >= rlower) /* cannot be one line */
1.1 nicm 1319: return;
1320:
1.164 nicm 1321: screen_write_collect_flush(ctx, 0, __func__);
1.110 nicm 1322:
1.1 nicm 1323: /* Cursor moves to top-left. */
1.139 nicm 1324: screen_write_set_cursor(ctx, 0, 0);
1.1 nicm 1325:
1326: s->rupper = rupper;
1327: s->rlower = rlower;
1328: }
1329:
1.34 nicm 1330: /* Line feed. */
1.1 nicm 1331: void
1.122 nicm 1332: screen_write_linefeed(struct screen_write_ctx *ctx, int wrapped, u_int bg)
1.1 nicm 1333: {
1.20 nicm 1334: struct screen *s = ctx->s;
1.109 nicm 1335: struct grid *gd = s->grid;
1.20 nicm 1336: struct grid_line *gl;
1.1 nicm 1337:
1.137 nicm 1338: gl = grid_get_line(gd, gd->hsize + s->cy);
1.20 nicm 1339: if (wrapped)
1340: gl->flags |= GRID_LINE_WRAPPED;
1341:
1.114 nicm 1342: log_debug("%s: at %u,%u (region %u-%u)", __func__, s->cx, s->cy,
1343: s->rupper, s->rlower);
1344:
1.122 nicm 1345: if (bg != ctx->bg) {
1.164 nicm 1346: screen_write_collect_flush(ctx, 1, __func__);
1.122 nicm 1347: ctx->bg = bg;
1348: }
1349:
1.92 nicm 1350: if (s->cy == s->rlower) {
1.122 nicm 1351: grid_view_scroll_region_up(gd, s->rupper, s->rlower, bg);
1.193 nicm 1352: screen_write_collect_scroll(ctx, bg);
1.110 nicm 1353: ctx->scrolled++;
1.109 nicm 1354: } else if (s->cy < screen_size_y(s) - 1)
1.139 nicm 1355: screen_write_set_cursor(ctx, -1, s->cy + 1);
1.1 nicm 1356: }
1357:
1.110 nicm 1358: /* Scroll up. */
1359: void
1.122 nicm 1360: screen_write_scrollup(struct screen_write_ctx *ctx, u_int lines, u_int bg)
1.110 nicm 1361: {
1362: struct screen *s = ctx->s;
1363: struct grid *gd = s->grid;
1364: u_int i;
1365:
1366: if (lines == 0)
1367: lines = 1;
1368: else if (lines > s->rlower - s->rupper + 1)
1369: lines = s->rlower - s->rupper + 1;
1370:
1.122 nicm 1371: if (bg != ctx->bg) {
1.164 nicm 1372: screen_write_collect_flush(ctx, 1, __func__);
1.122 nicm 1373: ctx->bg = bg;
1374: }
1375:
1.110 nicm 1376: for (i = 0; i < lines; i++) {
1.122 nicm 1377: grid_view_scroll_region_up(gd, s->rupper, s->rlower, bg);
1.193 nicm 1378: screen_write_collect_scroll(ctx, bg);
1.110 nicm 1379: }
1380: ctx->scrolled += lines;
1.157 nicm 1381: }
1382:
1383: /* Scroll down. */
1384: void
1385: screen_write_scrolldown(struct screen_write_ctx *ctx, u_int lines, u_int bg)
1386: {
1387: struct screen *s = ctx->s;
1388: struct grid *gd = s->grid;
1389: struct tty_ctx ttyctx;
1390: u_int i;
1391:
1.163 nicm 1392: screen_write_initctx(ctx, &ttyctx, 1);
1.157 nicm 1393: ttyctx.bg = bg;
1394:
1395: if (lines == 0)
1396: lines = 1;
1397: else if (lines > s->rlower - s->rupper + 1)
1398: lines = s->rlower - s->rupper + 1;
1399:
1400: for (i = 0; i < lines; i++)
1401: grid_view_scroll_region_down(gd, s->rupper, s->rlower, bg);
1402:
1.164 nicm 1403: screen_write_collect_flush(ctx, 0, __func__);
1.157 nicm 1404: ttyctx.num = lines;
1405: tty_write(tty_cmd_scrolldown, &ttyctx);
1.110 nicm 1406: }
1407:
1.1 nicm 1408: /* Carriage return (cursor to start of line). */
1409: void
1410: screen_write_carriagereturn(struct screen_write_ctx *ctx)
1411: {
1.139 nicm 1412: screen_write_set_cursor(ctx, 0, -1);
1.1 nicm 1413: }
1414:
1415: /* Clear to end of screen from cursor. */
1416: void
1.99 nicm 1417: screen_write_clearendofscreen(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1418: {
1419: struct screen *s = ctx->s;
1.107 nicm 1420: struct grid *gd = s->grid;
1.17 nicm 1421: struct tty_ctx ttyctx;
1.92 nicm 1422: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.1 nicm 1423:
1.163 nicm 1424: screen_write_initctx(ctx, &ttyctx, 1);
1.99 nicm 1425: ttyctx.bg = bg;
1.1 nicm 1426:
1.46 nicm 1427: /* Scroll into history if it is enabled and clearing entire screen. */
1.109 nicm 1428: if (s->cx == 0 && s->cy == 0 && (gd->flags & GRID_HISTORY))
1.107 nicm 1429: grid_view_clear_history(gd, bg);
1.109 nicm 1430: else {
1431: if (s->cx <= sx - 1)
1.107 nicm 1432: grid_view_clear(gd, s->cx, s->cy, sx - s->cx, 1, bg);
1433: grid_view_clear(gd, 0, s->cy + 1, sx, sy - (s->cy + 1), bg);
1.46 nicm 1434: }
1.1 nicm 1435:
1.109 nicm 1436: screen_write_collect_clear(ctx, s->cy + 1, sy - (s->cy + 1));
1.164 nicm 1437: screen_write_collect_flush(ctx, 0, __func__);
1.17 nicm 1438: tty_write(tty_cmd_clearendofscreen, &ttyctx);
1.1 nicm 1439: }
1440:
1441: /* Clear to start of screen. */
1442: void
1.105 nicm 1443: screen_write_clearstartofscreen(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1444: {
1445: struct screen *s = ctx->s;
1.17 nicm 1446: struct tty_ctx ttyctx;
1.92 nicm 1447: u_int sx = screen_size_x(s);
1.1 nicm 1448:
1.163 nicm 1449: screen_write_initctx(ctx, &ttyctx, 1);
1.105 nicm 1450: ttyctx.bg = bg;
1.1 nicm 1451:
1.109 nicm 1452: if (s->cy > 0)
1.105 nicm 1453: grid_view_clear(s->grid, 0, 0, sx, s->cy, bg);
1.109 nicm 1454: if (s->cx > sx - 1)
1.120 nicm 1455: grid_view_clear(s->grid, 0, s->cy, sx, 1, bg);
1.109 nicm 1456: else
1.120 nicm 1457: grid_view_clear(s->grid, 0, s->cy, s->cx + 1, 1, bg);
1.1 nicm 1458:
1.109 nicm 1459: screen_write_collect_clear(ctx, 0, s->cy);
1.164 nicm 1460: screen_write_collect_flush(ctx, 0, __func__);
1.17 nicm 1461: tty_write(tty_cmd_clearstartofscreen, &ttyctx);
1.1 nicm 1462: }
1463:
1464: /* Clear entire screen. */
1465: void
1.99 nicm 1466: screen_write_clearscreen(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1467: {
1468: struct screen *s = ctx->s;
1.17 nicm 1469: struct tty_ctx ttyctx;
1.92 nicm 1470: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.1 nicm 1471:
1.163 nicm 1472: screen_write_initctx(ctx, &ttyctx, 1);
1.99 nicm 1473: ttyctx.bg = bg;
1.1 nicm 1474:
1.46 nicm 1475: /* Scroll into history if it is enabled. */
1476: if (s->grid->flags & GRID_HISTORY)
1.99 nicm 1477: grid_view_clear_history(s->grid, bg);
1.83 nicm 1478: else
1.99 nicm 1479: grid_view_clear(s->grid, 0, 0, sx, sy, bg);
1.1 nicm 1480:
1.109 nicm 1481: screen_write_collect_clear(ctx, 0, sy);
1.17 nicm 1482: tty_write(tty_cmd_clearscreen, &ttyctx);
1.51 nicm 1483: }
1484:
1485: /* Clear entire history. */
1486: void
1487: screen_write_clearhistory(struct screen_write_ctx *ctx)
1488: {
1.156 nicm 1489: grid_clear_history(ctx->s->grid);
1.197 nicm 1490: }
1491:
1492: /* Force a full redraw. */
1493: void
1494: screen_write_fullredraw(struct screen_write_ctx *ctx)
1495: {
1496: struct tty_ctx ttyctx;
1497:
1498: screen_write_collect_flush(ctx, 0, __func__);
1499:
1500: screen_write_initctx(ctx, &ttyctx, 1);
1501: ttyctx.redraw_cb(&ttyctx);
1.1 nicm 1502: }
1503:
1.193 nicm 1504: /* Trim collected items. */
1505: static struct screen_write_citem *
1506: screen_write_collect_trim(struct screen_write_ctx *ctx, u_int y, u_int x,
1507: u_int used, int *wrapped)
1508: {
1509: struct screen_write_cline *cl = &ctx->s->write_list[y];
1510: struct screen_write_citem *ci, *ci2, *tmp, *before = NULL;
1511: u_int sx = x, ex = x + used - 1;
1512: u_int csx, cex;
1513:
1514: if (TAILQ_EMPTY(&cl->items))
1515: return (NULL);
1516: TAILQ_FOREACH_SAFE(ci, &cl->items, entry, tmp) {
1517: csx = ci->x;
1518: cex = ci->x + ci->used - 1;
1519:
1520: /* Item is entirely before. */
1521: if (cex < sx) {
1522: log_debug("%s: %p %u-%u before %u-%u", __func__, ci,
1523: csx, cex, sx, ex);
1524: continue;
1525: }
1.165 nicm 1526:
1.193 nicm 1527: /* Item is entirely after. */
1528: if (csx > ex) {
1529: log_debug("%s: %p %u-%u after %u-%u", __func__, ci,
1530: csx, cex, sx, ex);
1531: before = ci;
1.165 nicm 1532: break;
1.193 nicm 1533: }
1534:
1535: /* Item is entirely inside. */
1536: if (csx >= sx && cex <= ex) {
1537: log_debug("%s: %p %u-%u inside %u-%u", __func__, ci,
1538: csx, cex, sx, ex);
1539: TAILQ_REMOVE(&cl->items, ci, entry);
1540: screen_write_free_citem(ci);
1541: if (csx == 0 && ci->wrapped && wrapped != NULL)
1542: *wrapped = 1;
1.165 nicm 1543: continue;
1544: }
1545:
1.193 nicm 1546: /* Item under the start. */
1547: if (csx < sx && cex >= sx && cex <= ex) {
1548: log_debug("%s: %p %u-%u start %u-%u", __func__, ci,
1549: csx, cex, sx, ex);
1550: ci->used = sx - csx;
1551: log_debug("%s: %p now %u-%u", __func__, ci, ci->x,
1552: ci->x + ci->used + 1);
1.165 nicm 1553: continue;
1.193 nicm 1554: }
1555:
1556: /* Item covers the end. */
1557: if (cex > ex && csx >= sx && csx <= ex) {
1558: log_debug("%s: %p %u-%u end %u-%u", __func__, ci,
1559: csx, cex, sx, ex);
1560: ci->x = ex + 1;
1561: ci->used = cex - ex;
1562: log_debug("%s: %p now %u-%u", __func__, ci, ci->x,
1563: ci->x + ci->used + 1);
1564: before = ci;
1.165 nicm 1565: break;
1566: }
1.193 nicm 1567:
1568: /* Item must cover both sides. */
1569: log_debug("%s: %p %u-%u under %u-%u", __func__, ci,
1570: csx, cex, sx, ex);
1571: ci2 = screen_write_get_citem();
1572: ci2->type = ci->type;
1573: ci2->bg = ci->bg;
1574: memcpy(&ci2->gc, &ci->gc, sizeof ci2->gc);
1575: TAILQ_INSERT_AFTER(&cl->items, ci, ci2, entry);
1576:
1577: ci->used = sx - csx;
1578: ci2->x = ex + 1;
1579: ci2->used = cex - ex;
1580:
1581: log_debug("%s: %p now %u-%u (%p) and %u-%u (%p)", __func__, ci,
1582: ci->x, ci->x + ci->used - 1, ci, ci2->x,
1583: ci2->x + ci2->used - 1, ci2);
1584: before = ci2;
1585: break;
1586: }
1587: return (before);
1.165 nicm 1588: }
1589:
1.170 nicm 1590: /* Clear collected lines. */
1.109 nicm 1591: static void
1592: screen_write_collect_clear(struct screen_write_ctx *ctx, u_int y, u_int n)
1593: {
1.193 nicm 1594: struct screen_write_cline *cl;
1595: u_int i;
1.109 nicm 1596:
1.151 nicm 1597: for (i = y; i < y + n; i++) {
1.172 nicm 1598: cl = &ctx->s->write_list[i];
1.193 nicm 1599: TAILQ_CONCAT(&screen_write_citem_freelist, &cl->items, entry);
1.109 nicm 1600: }
1601: }
1602:
1603: /* Scroll collected lines up. */
1604: static void
1.193 nicm 1605: screen_write_collect_scroll(struct screen_write_ctx *ctx, u_int bg)
1.109 nicm 1606: {
1.193 nicm 1607: struct screen *s = ctx->s;
1608: struct screen_write_cline *cl;
1609: u_int y;
1610: char *saved;
1611: struct screen_write_citem *ci;
1.109 nicm 1612:
1.114 nicm 1613: log_debug("%s: at %u,%u (region %u-%u)", __func__, s->cx, s->cy,
1614: s->rupper, s->rlower);
1615:
1.109 nicm 1616: screen_write_collect_clear(ctx, s->rupper, 1);
1.172 nicm 1617: saved = ctx->s->write_list[s->rupper].data;
1.109 nicm 1618: for (y = s->rupper; y < s->rlower; y++) {
1.172 nicm 1619: cl = &ctx->s->write_list[y + 1];
1620: TAILQ_CONCAT(&ctx->s->write_list[y].items, &cl->items, entry);
1621: ctx->s->write_list[y].data = cl->data;
1.109 nicm 1622: }
1.172 nicm 1623: ctx->s->write_list[s->rlower].data = saved;
1.193 nicm 1624:
1625: ci = screen_write_get_citem();
1626: ci->x = 0;
1627: ci->used = screen_size_x(s);
1628: ci->type = CLEAR;
1629: ci->bg = bg;
1630: TAILQ_INSERT_TAIL(&ctx->s->write_list[s->rlower].items, ci, entry);
1.109 nicm 1631: }
1632:
1633: /* Flush collected lines. */
1634: static void
1.164 nicm 1635: screen_write_collect_flush(struct screen_write_ctx *ctx, int scroll_only,
1636: const char *from)
1.109 nicm 1637: {
1.193 nicm 1638: struct screen *s = ctx->s;
1639: struct screen_write_citem *ci, *tmp;
1640: struct screen_write_cline *cl;
1641: u_int y, cx, cy, last, items = 0;
1642: struct tty_ctx ttyctx;
1.110 nicm 1643:
1644: if (ctx->scrolled != 0) {
1645: log_debug("%s: scrolled %u (region %u-%u)", __func__,
1646: ctx->scrolled, s->rupper, s->rlower);
1647: if (ctx->scrolled > s->rlower - s->rupper + 1)
1648: ctx->scrolled = s->rlower - s->rupper + 1;
1649:
1.163 nicm 1650: screen_write_initctx(ctx, &ttyctx, 1);
1.110 nicm 1651: ttyctx.num = ctx->scrolled;
1.122 nicm 1652: ttyctx.bg = ctx->bg;
1.110 nicm 1653: tty_write(tty_cmd_scrollup, &ttyctx);
1654: }
1655: ctx->scrolled = 0;
1.122 nicm 1656: ctx->bg = 8;
1657:
1.111 nicm 1658: if (scroll_only)
1659: return;
1.109 nicm 1660:
1661: cx = s->cx; cy = s->cy;
1662: for (y = 0; y < screen_size_y(s); y++) {
1.172 nicm 1663: cl = &ctx->s->write_list[y];
1.193 nicm 1664: last = UINT_MAX;
1.172 nicm 1665: TAILQ_FOREACH_SAFE(ci, &cl->items, entry, tmp) {
1.193 nicm 1666: if (last != UINT_MAX && ci->x <= last) {
1667: fatalx("collect list not in order: %u <= %u",
1668: ci->x, last);
1669: }
1.144 nicm 1670: screen_write_set_cursor(ctx, ci->x, y);
1.193 nicm 1671: if (ci->type == CLEAR) {
1.167 nicm 1672: screen_write_initctx(ctx, &ttyctx, 1);
1.165 nicm 1673: ttyctx.bg = ci->bg;
1.193 nicm 1674: ttyctx.num = ci->used;
1675: tty_write(tty_cmd_clearcharacter, &ttyctx);
1.165 nicm 1676: } else {
1.167 nicm 1677: screen_write_initctx(ctx, &ttyctx, 0);
1.165 nicm 1678: ttyctx.cell = &ci->gc;
1679: ttyctx.wrapped = ci->wrapped;
1.172 nicm 1680: ttyctx.ptr = cl->data + ci->x;
1.165 nicm 1681: ttyctx.num = ci->used;
1682: tty_write(tty_cmd_cells, &ttyctx);
1683: }
1.116 nicm 1684: items++;
1.109 nicm 1685:
1.172 nicm 1686: TAILQ_REMOVE(&cl->items, ci, entry);
1.193 nicm 1687: screen_write_free_citem(ci);
1688: last = ci->x;
1.109 nicm 1689: }
1690: }
1691: s->cx = cx; s->cy = cy;
1.116 nicm 1692:
1.193 nicm 1693: log_debug("%s: flushed %u items (%s)", __func__, items, from);
1.109 nicm 1694: }
1695:
1696: /* Finish and store collected cells. */
1697: void
1698: screen_write_collect_end(struct screen_write_ctx *ctx)
1699: {
1.193 nicm 1700: struct screen *s = ctx->s;
1701: struct screen_write_citem *ci = ctx->item, *before;
1702: struct screen_write_cline *cl = &s->write_list[s->cy];
1703: struct grid_cell gc;
1704: u_int xx;
1705: int wrapped = ci->wrapped;
1.109 nicm 1706:
1707: if (ci->used == 0)
1708: return;
1709:
1.193 nicm 1710: before = screen_write_collect_trim(ctx, s->cy, s->cx, ci->used,
1711: &wrapped);
1.109 nicm 1712: ci->x = s->cx;
1.193 nicm 1713: ci->wrapped = wrapped;
1714: if (before == NULL)
1715: TAILQ_INSERT_TAIL(&cl->items, ci, entry);
1716: else
1717: TAILQ_INSERT_BEFORE(before, ci, entry);
1718: ctx->item = screen_write_get_citem();
1.109 nicm 1719:
1.170 nicm 1720: log_debug("%s: %u %.*s (at %u,%u)", __func__, ci->used,
1.172 nicm 1721: (int)ci->used, cl->data + ci->x, s->cx, s->cy);
1.109 nicm 1722:
1.131 nicm 1723: if (s->cx != 0) {
1724: for (xx = s->cx; xx > 0; xx--) {
1725: grid_view_get_cell(s->grid, xx, s->cy, &gc);
1726: if (~gc.flags & GRID_FLAG_PADDING)
1727: break;
1.136 nicm 1728: grid_view_set_cell(s->grid, xx, s->cy,
1729: &grid_default_cell);
1.131 nicm 1730: }
1.139 nicm 1731: if (gc.data.width > 1) {
1.136 nicm 1732: grid_view_set_cell(s->grid, xx, s->cy,
1733: &grid_default_cell);
1.139 nicm 1734: }
1.131 nicm 1735: }
1736:
1.172 nicm 1737: grid_view_set_cells(s->grid, s->cx, s->cy, &ci->gc, cl->data + ci->x,
1738: ci->used);
1.139 nicm 1739: screen_write_set_cursor(ctx, s->cx + ci->used, -1);
1.131 nicm 1740:
1741: for (xx = s->cx; xx < screen_size_x(s); xx++) {
1742: grid_view_get_cell(s->grid, xx, s->cy, &gc);
1743: if (~gc.flags & GRID_FLAG_PADDING)
1744: break;
1745: grid_view_set_cell(s->grid, xx, s->cy, &grid_default_cell);
1746: }
1.109 nicm 1747: }
1748:
1749: /* Write cell data, collecting if necessary. */
1750: void
1751: screen_write_collect_add(struct screen_write_ctx *ctx,
1752: const struct grid_cell *gc)
1753: {
1.193 nicm 1754: struct screen *s = ctx->s;
1755: struct screen_write_citem *ci;
1756: u_int sx = screen_size_x(s);
1757: int collect;
1.109 nicm 1758:
1759: /*
1760: * Don't need to check that the attributes and whatnot are still the
1.116 nicm 1761: * same - input_parse will end the collection when anything that isn't
1.159 nicm 1762: * a plain character is encountered.
1.109 nicm 1763: */
1764:
1765: collect = 1;
1.136 nicm 1766: if (gc->data.width != 1 || gc->data.size != 1 || *gc->data.data >= 0x7f)
1.109 nicm 1767: collect = 0;
1768: else if (gc->attr & GRID_ATTR_CHARSET)
1769: collect = 0;
1770: else if (~s->mode & MODE_WRAP)
1771: collect = 0;
1772: else if (s->mode & MODE_INSERT)
1773: collect = 0;
1.138 nicm 1774: else if (s->sel != NULL)
1.109 nicm 1775: collect = 0;
1776: if (!collect) {
1777: screen_write_collect_end(ctx);
1.164 nicm 1778: screen_write_collect_flush(ctx, 0, __func__);
1.109 nicm 1779: screen_write_cell(ctx, gc);
1780: return;
1781: }
1782:
1783: if (s->cx > sx - 1 || ctx->item->used > sx - 1 - s->cx)
1784: screen_write_collect_end(ctx);
1.118 nicm 1785: ci = ctx->item; /* may have changed */
1786:
1.109 nicm 1787: if (s->cx > sx - 1) {
1.114 nicm 1788: log_debug("%s: wrapped at %u,%u", __func__, s->cx, s->cy);
1.118 nicm 1789: ci->wrapped = 1;
1.122 nicm 1790: screen_write_linefeed(ctx, 1, 8);
1.139 nicm 1791: screen_write_set_cursor(ctx, 0, -1);
1.109 nicm 1792: }
1793:
1794: if (ci->used == 0)
1795: memcpy(&ci->gc, gc, sizeof ci->gc);
1.172 nicm 1796: if (ctx->s->write_list[s->cy].data == NULL)
1797: ctx->s->write_list[s->cy].data = xmalloc(screen_size_x(ctx->s));
1798: ctx->s->write_list[s->cy].data[s->cx + ci->used++] = gc->data.data[0];
1.109 nicm 1799: }
1800:
1.1 nicm 1801: /* Write cell data. */
1802: void
1.60 nicm 1803: screen_write_cell(struct screen_write_ctx *ctx, const struct grid_cell *gc)
1.1 nicm 1804: {
1805: struct screen *s = ctx->s;
1806: struct grid *gd = s->grid;
1.196 nicm 1807: const struct utf8_data *ud = &gc->data;
1808: const struct utf8_data zwj = { "\342\200\215", 0, 3, 0 };
1.109 nicm 1809: struct grid_line *gl;
1810: struct grid_cell_entry *gce;
1811: struct grid_cell tmp_gc, now_gc;
1.15 nicm 1812: struct tty_ctx ttyctx;
1.92 nicm 1813: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.115 nicm 1814: u_int width = gc->data.width, xx, last, cx, cy;
1.109 nicm 1815: int selected, skip = 1;
1.1 nicm 1816:
1.109 nicm 1817: /* Ignore padding cells. */
1.1 nicm 1818: if (gc->flags & GRID_FLAG_PADDING)
1819: return;
1.32 nicm 1820:
1.196 nicm 1821: /*
1822: * If this is a zero width joiner, set the flag so the next character
1823: * will be treated as zero width and appended. Note that we assume a
1824: * ZWJ will not change the width - the width of the first character is
1825: * used.
1826: */
1827: if (ud->size == 3 && memcmp(ud->data, "\342\200\215", 3) == 0) {
1828: log_debug("zero width joiner at %u,%u", s->cx, s->cy);
1829: ctx->flags |= SCREEN_WRITE_ZWJ;
1830: return;
1831: }
1832:
1833: /*
1834: * If the width is zero, combine onto the previous character. We always
1835: * combine with the cell to the left of the cursor position. In theory,
1836: * the application could have moved the cursor somewhere else, but if
1837: * they are silly enough to do that, who cares?
1838: */
1839: if (ctx->flags & SCREEN_WRITE_ZWJ) {
1840: screen_write_collect_flush(ctx, 0, __func__);
1841: screen_write_combine(ctx, &zwj, &xx);
1842: }
1843: if (width == 0 || (ctx->flags & SCREEN_WRITE_ZWJ)) {
1844: ctx->flags &= ~SCREEN_WRITE_ZWJ;
1.164 nicm 1845: screen_write_collect_flush(ctx, 0, __func__);
1.198 nicm 1846: if ((gc = screen_write_combine(ctx, ud, &xx)) != NULL) {
1.115 nicm 1847: cx = s->cx; cy = s->cy;
1.144 nicm 1848: screen_write_set_cursor(ctx, xx, s->cy);
1.163 nicm 1849: screen_write_initctx(ctx, &ttyctx, 0);
1.104 nicm 1850: ttyctx.cell = gc;
1851: tty_write(tty_cmd_cell, &ttyctx);
1.198 nicm 1852: s->cx = cx; s->cy = cy;
1.1 nicm 1853: }
1854: return;
1855: }
1.112 nicm 1856:
1857: /* Flush any existing scrolling. */
1.164 nicm 1858: screen_write_collect_flush(ctx, 1, __func__);
1.1 nicm 1859:
1.109 nicm 1860: /* If this character doesn't fit, ignore it. */
1861: if ((~s->mode & MODE_WRAP) &&
1862: width > 1 &&
1863: (width > sx || (s->cx != sx && s->cx > sx - width)))
1864: return;
1865:
1.6 nicm 1866: /* If in insert mode, make space for the cells. */
1.98 nicm 1867: if (s->mode & MODE_INSERT) {
1.109 nicm 1868: grid_view_insert_cells(s->grid, s->cx, s->cy, width, 8);
1869: skip = 0;
1870: }
1.6 nicm 1871:
1.20 nicm 1872: /* Check this will fit on the current line and wrap if not. */
1.92 nicm 1873: if ((s->mode & MODE_WRAP) && s->cx > sx - width) {
1.128 nicm 1874: log_debug("%s: wrapped at %u,%u", __func__, s->cx, s->cy);
1.122 nicm 1875: screen_write_linefeed(ctx, 1, 8);
1.139 nicm 1876: screen_write_set_cursor(ctx, 0, -1);
1.164 nicm 1877: screen_write_collect_flush(ctx, 1, __func__);
1.1 nicm 1878: }
1879:
1.64 nicm 1880: /* Sanity check cursor position. */
1.92 nicm 1881: if (s->cx > sx - width || s->cy > sy - 1)
1.1 nicm 1882: return;
1.163 nicm 1883: screen_write_initctx(ctx, &ttyctx, 0);
1.106 nicm 1884:
1.1 nicm 1885: /* Handle overwriting of UTF-8 characters. */
1.137 nicm 1886: gl = grid_get_line(s->grid, s->grid->hsize + s->cy);
1.92 nicm 1887: if (gl->flags & GRID_LINE_EXTENDED) {
1888: grid_view_get_cell(gd, s->cx, s->cy, &now_gc);
1889: if (screen_write_overwrite(ctx, &now_gc, width))
1890: skip = 0;
1891: }
1.1 nicm 1892:
1893: /*
1894: * If the new character is UTF-8 wide, fill in padding cells. Have
1895: * already ensured there is enough room.
1896: */
1.89 nicm 1897: for (xx = s->cx + 1; xx < s->cx + width; xx++) {
1.131 nicm 1898: log_debug("%s: new padding at %u,%u", __func__, xx, s->cy);
1.184 nicm 1899: grid_view_set_padding(gd, xx, s->cy);
1.89 nicm 1900: skip = 0;
1901: }
1902:
1903: /* If no change, do not draw. */
1.92 nicm 1904: if (skip) {
1905: if (s->cx >= gl->cellsize)
1906: skip = grid_cells_equal(gc, &grid_default_cell);
1907: else {
1908: gce = &gl->celldata[s->cx];
1909: if (gce->flags & GRID_FLAG_EXTENDED)
1910: skip = 0;
1.95 nicm 1911: else if (gc->flags != gce->flags)
1.92 nicm 1912: skip = 0;
1913: else if (gc->attr != gce->data.attr)
1914: skip = 0;
1915: else if (gc->fg != gce->data.fg)
1916: skip = 0;
1917: else if (gc->bg != gce->data.bg)
1918: skip = 0;
1.95 nicm 1919: else if (gc->data.width != 1)
1920: skip = 0;
1.109 nicm 1921: else if (gc->data.size != 1)
1922: skip = 0;
1.95 nicm 1923: else if (gce->data.data != gc->data.data[0])
1.92 nicm 1924: skip = 0;
1925: }
1926: }
1.1 nicm 1927:
1.127 nicm 1928: /* Update the selected flag and set the cell. */
1.90 nicm 1929: selected = screen_check_selection(s, s->cx, s->cy);
1.109 nicm 1930: if (selected && (~gc->flags & GRID_FLAG_SELECTED)) {
1.90 nicm 1931: memcpy(&tmp_gc, gc, sizeof tmp_gc);
1932: tmp_gc.flags |= GRID_FLAG_SELECTED;
1933: grid_view_set_cell(gd, s->cx, s->cy, &tmp_gc);
1.109 nicm 1934: } else if (!selected && (gc->flags & GRID_FLAG_SELECTED)) {
1.90 nicm 1935: memcpy(&tmp_gc, gc, sizeof tmp_gc);
1936: tmp_gc.flags &= ~GRID_FLAG_SELECTED;
1937: grid_view_set_cell(gd, s->cx, s->cy, &tmp_gc);
1938: } else if (!skip)
1.89 nicm 1939: grid_view_set_cell(gd, s->cx, s->cy, gc);
1.109 nicm 1940: if (selected)
1941: skip = 0;
1.1 nicm 1942:
1.64 nicm 1943: /*
1944: * Move the cursor. If not wrapping, stick at the last character and
1945: * replace it.
1946: */
1.65 nicm 1947: last = !(s->mode & MODE_WRAP);
1.92 nicm 1948: if (s->cx <= sx - last - width)
1.139 nicm 1949: screen_write_set_cursor(ctx, s->cx + width, -1);
1.64 nicm 1950: else
1.139 nicm 1951: screen_write_set_cursor(ctx, sx - last, -1);
1.1 nicm 1952:
1.89 nicm 1953: /* Create space for character in insert mode. */
1.109 nicm 1954: if (s->mode & MODE_INSERT) {
1.164 nicm 1955: screen_write_collect_flush(ctx, 0, __func__);
1.17 nicm 1956: ttyctx.num = width;
1957: tty_write(tty_cmd_insertcharacter, &ttyctx);
1958: }
1.89 nicm 1959:
1960: /* Write to the screen. */
1.109 nicm 1961: if (!skip) {
1962: if (selected) {
1963: screen_select_cell(s, &tmp_gc, gc);
1964: ttyctx.cell = &tmp_gc;
1965: } else
1966: ttyctx.cell = gc;
1.16 nicm 1967: tty_write(tty_cmd_cell, &ttyctx);
1.193 nicm 1968: }
1.35 nicm 1969: }
1970:
1971: /* Combine a UTF-8 zero-width character onto the previous. */
1.104 nicm 1972: static const struct grid_cell *
1973: screen_write_combine(struct screen_write_ctx *ctx, const struct utf8_data *ud,
1974: u_int *xx)
1.35 nicm 1975: {
1976: struct screen *s = ctx->s;
1977: struct grid *gd = s->grid;
1.104 nicm 1978: static struct grid_cell gc;
1979: u_int n;
1.35 nicm 1980:
1981: /* Can't combine if at 0. */
1982: if (s->cx == 0)
1.104 nicm 1983: return (NULL);
1.35 nicm 1984:
1.60 nicm 1985: /* Empty data is out. */
1986: if (ud->size == 0)
1.37 nicm 1987: fatalx("UTF-8 data empty");
1988:
1.60 nicm 1989: /* Retrieve the previous cell. */
1.119 nicm 1990: for (n = 1; n <= s->cx; n++) {
1.104 nicm 1991: grid_view_get_cell(gd, s->cx - n, s->cy, &gc);
1992: if (~gc.flags & GRID_FLAG_PADDING)
1993: break;
1994: }
1.119 nicm 1995: if (n > s->cx)
1.104 nicm 1996: return (NULL);
1997: *xx = s->cx - n;
1.35 nicm 1998:
1.60 nicm 1999: /* Check there is enough space. */
1.77 nicm 2000: if (gc.data.size + ud->size > sizeof gc.data.data)
1.104 nicm 2001: return (NULL);
2002:
2003: log_debug("%s: %.*s onto %.*s at %u,%u", __func__, (int)ud->size,
2004: ud->data, (int)gc.data.size, gc.data.data, *xx, s->cy);
1.35 nicm 2005:
1.77 nicm 2006: /* Append the data. */
2007: memcpy(gc.data.data + gc.data.size, ud->data, ud->size);
2008: gc.data.size += ud->size;
2009:
2010: /* Set the new cell. */
1.104 nicm 2011: grid_view_set_cell(gd, *xx, s->cy, &gc);
1.35 nicm 2012:
1.104 nicm 2013: return (&gc);
1.1 nicm 2014: }
2015:
2016: /*
2017: * UTF-8 wide characters are a bit of an annoyance. They take up more than one
2018: * cell on the screen, so following cells must not be drawn by marking them as
2019: * padding.
2020: *
2021: * So far, so good. The problem is, when overwriting a padding cell, or a UTF-8
2022: * character, it is necessary to also overwrite any other cells which covered
2023: * by the same character.
2024: */
1.89 nicm 2025: static int
2026: screen_write_overwrite(struct screen_write_ctx *ctx, struct grid_cell *gc,
2027: u_int width)
1.1 nicm 2028: {
2029: struct screen *s = ctx->s;
2030: struct grid *gd = s->grid;
1.89 nicm 2031: struct grid_cell tmp_gc;
1.1 nicm 2032: u_int xx;
1.89 nicm 2033: int done = 0;
1.1 nicm 2034:
1.89 nicm 2035: if (gc->flags & GRID_FLAG_PADDING) {
1.1 nicm 2036: /*
2037: * A padding cell, so clear any following and leading padding
2038: * cells back to the character. Don't overwrite the current
2039: * cell as that happens later anyway.
2040: */
2041: xx = s->cx + 1;
2042: while (--xx > 0) {
1.89 nicm 2043: grid_view_get_cell(gd, xx, s->cy, &tmp_gc);
2044: if (~tmp_gc.flags & GRID_FLAG_PADDING)
1.1 nicm 2045: break;
1.131 nicm 2046: log_debug("%s: padding at %u,%u", __func__, xx, s->cy);
1.1 nicm 2047: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
2048: }
2049:
2050: /* Overwrite the character at the start of this padding. */
1.131 nicm 2051: log_debug("%s: character at %u,%u", __func__, xx, s->cy);
1.1 nicm 2052: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
1.89 nicm 2053: done = 1;
1.43 nicm 2054: }
1.1 nicm 2055:
1.43 nicm 2056: /*
1.95 nicm 2057: * Overwrite any padding cells that belong to any UTF-8 characters
2058: * we'll be overwriting with the current character.
1.43 nicm 2059: */
1.95 nicm 2060: if (width != 1 ||
2061: gc->data.width != 1 ||
2062: gc->flags & GRID_FLAG_PADDING) {
1.89 nicm 2063: xx = s->cx + width - 1;
2064: while (++xx < screen_size_x(s)) {
2065: grid_view_get_cell(gd, xx, s->cy, &tmp_gc);
2066: if (~tmp_gc.flags & GRID_FLAG_PADDING)
2067: break;
1.160 nicm 2068: log_debug("%s: overwrite at %u,%u", __func__, xx,
2069: s->cy);
1.89 nicm 2070: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
2071: done = 1;
2072: }
1.1 nicm 2073: }
1.89 nicm 2074:
2075: return (done);
1.50 nicm 2076: }
2077:
1.107 nicm 2078: /* Set external clipboard. */
1.50 nicm 2079: void
2080: screen_write_setselection(struct screen_write_ctx *ctx, u_char *str, u_int len)
2081: {
2082: struct tty_ctx ttyctx;
2083:
1.163 nicm 2084: screen_write_initctx(ctx, &ttyctx, 0);
1.50 nicm 2085: ttyctx.ptr = str;
2086: ttyctx.num = len;
2087:
2088: tty_write(tty_cmd_setselection, &ttyctx);
1.47 nicm 2089: }
2090:
1.107 nicm 2091: /* Write unmodified string. */
1.47 nicm 2092: void
2093: screen_write_rawstring(struct screen_write_ctx *ctx, u_char *str, u_int len)
2094: {
1.87 nicm 2095: struct tty_ctx ttyctx;
1.47 nicm 2096:
1.163 nicm 2097: screen_write_initctx(ctx, &ttyctx, 0);
1.47 nicm 2098: ttyctx.ptr = str;
2099: ttyctx.num = len;
2100:
2101: tty_write(tty_cmd_rawstring, &ttyctx);
1.178 nicm 2102: }
2103:
2104: /* Turn alternate screen on. */
2105: void
2106: screen_write_alternateon(struct screen_write_ctx *ctx, struct grid_cell *gc,
2107: int cursor)
2108: {
2109: struct tty_ctx ttyctx;
2110: struct window_pane *wp = ctx->wp;
2111:
2112: if (wp != NULL && !options_get_number(wp->options, "alternate-screen"))
2113: return;
1.192 nicm 2114:
2115: screen_write_collect_flush(ctx, 0, __func__);
1.178 nicm 2116: screen_alternate_on(ctx->s, gc, cursor);
2117:
2118: screen_write_initctx(ctx, &ttyctx, 1);
2119: ttyctx.redraw_cb(&ttyctx);
2120: }
2121:
2122: /* Turn alternate screen off. */
2123: void
2124: screen_write_alternateoff(struct screen_write_ctx *ctx, struct grid_cell *gc,
2125: int cursor)
2126: {
2127: struct tty_ctx ttyctx;
2128: struct window_pane *wp = ctx->wp;
2129:
2130: if (wp != NULL && !options_get_number(wp->options, "alternate-screen"))
2131: return;
1.192 nicm 2132:
2133: screen_write_collect_flush(ctx, 0, __func__);
1.178 nicm 2134: screen_alternate_off(ctx->s, gc, cursor);
2135:
2136: screen_write_initctx(ctx, &ttyctx, 1);
2137: ttyctx.redraw_cb(&ttyctx);
1.1 nicm 2138: }
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