Annotation of src/usr.bin/tmux/screen-write.c, Revision 1.206
1.206 ! nicm 1: /* $OpenBSD: screen-write.c,v 1.205 2021/10/26 12:22:23 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) {
1.204 nicm 187: if (ttyctx->defaults.fg == 8)
1.203 nicm 188: ttyctx->defaults.fg = ttyctx->palette->fg;
1.204 nicm 189: if (ttyctx->defaults.bg == 8)
1.203 nicm 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;
1.205 nicm 668: format_draw(ctx, gc, menu->width, name, NULL,
669: 0);
1.161 nicm 670: default_gc.attr &= ~GRID_ATTR_DIM;
1.153 nicm 671: } else
1.205 nicm 672: format_draw(ctx, gc, menu->width, name, NULL,
673: gc == choice_gc);
1.161 nicm 674: gc = &default_gc;
1.152 nicm 675: }
676: }
1.125 nicm 677:
1.144 nicm 678: screen_write_set_cursor(ctx, cx, cy);
1.125 nicm 679: }
680:
1.201 nicm 681: static void
682: screen_write_box_border_set(enum box_lines box_lines, int cell_type,
683: struct grid_cell *gc)
684: {
685: switch (box_lines) {
686: case BOX_LINES_NONE:
687: break;
688: case BOX_LINES_DOUBLE:
689: gc->attr &= ~GRID_ATTR_CHARSET;
690: utf8_copy(&gc->data, tty_acs_double_borders(cell_type));
691: break;
692: case BOX_LINES_HEAVY:
693: gc->attr &= ~GRID_ATTR_CHARSET;
694: utf8_copy(&gc->data, tty_acs_heavy_borders(cell_type));
695: break;
696: case BOX_LINES_ROUNDED:
697: gc->attr &= ~GRID_ATTR_CHARSET;
698: utf8_copy(&gc->data, tty_acs_rounded_borders(cell_type));
699: break;
700: case BOX_LINES_SIMPLE:
701: gc->attr &= ~GRID_ATTR_CHARSET;
702: utf8_set(&gc->data, SIMPLE_BORDERS[cell_type]);
703: break;
704: case BOX_LINES_PADDED:
705: gc->attr &= ~GRID_ATTR_CHARSET;
706: utf8_set(&gc->data, PADDED_BORDERS[cell_type]);
707: break;
708: case BOX_LINES_SINGLE:
709: case BOX_LINES_DEFAULT:
710: gc->attr |= GRID_ATTR_CHARSET;
711: utf8_set(&gc->data, CELL_BORDERS[cell_type]);
712: break;
713: }
714: }
715:
1.125 nicm 716: /* Draw a box on screen. */
717: void
1.200 nicm 718: screen_write_box(struct screen_write_ctx *ctx, u_int nx, u_int ny,
1.202 nicm 719: enum box_lines lines, const struct grid_cell *gcp, const char *title)
1.125 nicm 720: {
721: struct screen *s = ctx->s;
1.200 nicm 722: struct grid_cell gc;
1.125 nicm 723: u_int cx, cy, i;
724:
725: cx = s->cx;
726: cy = s->cy;
727:
1.200 nicm 728: if (gcp != NULL)
729: memcpy(&gc, gcp, sizeof gc);
730: else
731: memcpy(&gc, &grid_default_cell, sizeof gc);
1.202 nicm 732:
1.125 nicm 733: gc.attr |= GRID_ATTR_CHARSET;
1.197 nicm 734: gc.flags |= GRID_FLAG_NOPALETTE;
1.125 nicm 735:
1.201 nicm 736: /* Draw top border */
1.202 nicm 737: screen_write_box_border_set(lines, CELL_TOPLEFT, &gc);
1.201 nicm 738: screen_write_cell(ctx, &gc);
1.202 nicm 739: screen_write_box_border_set(lines, CELL_LEFTRIGHT, &gc);
1.125 nicm 740: for (i = 1; i < nx - 1; i++)
1.201 nicm 741: screen_write_cell(ctx, &gc);
1.202 nicm 742: screen_write_box_border_set(lines, CELL_TOPRIGHT, &gc);
1.201 nicm 743: screen_write_cell(ctx, &gc);
1.125 nicm 744:
1.201 nicm 745: /* Draw bottom border */
1.144 nicm 746: screen_write_set_cursor(ctx, cx, cy + ny - 1);
1.202 nicm 747: screen_write_box_border_set(lines, CELL_BOTTOMLEFT, &gc);
1.201 nicm 748: screen_write_cell(ctx, &gc);
1.202 nicm 749: screen_write_box_border_set(lines, CELL_LEFTRIGHT, &gc);
1.125 nicm 750: for (i = 1; i < nx - 1; i++)
1.201 nicm 751: screen_write_cell(ctx, &gc);
1.202 nicm 752: screen_write_box_border_set(lines, CELL_BOTTOMRIGHT, &gc);
1.201 nicm 753: screen_write_cell(ctx, &gc);
1.125 nicm 754:
1.201 nicm 755: /* Draw sides */
1.202 nicm 756: screen_write_box_border_set(lines, CELL_TOPBOTTOM, &gc);
1.125 nicm 757: for (i = 1; i < ny - 1; i++) {
1.201 nicm 758: /* left side */
1.144 nicm 759: screen_write_set_cursor(ctx, cx, cy + i);
1.201 nicm 760: screen_write_cell(ctx, &gc);
761: /* right side */
1.144 nicm 762: screen_write_set_cursor(ctx, cx + nx - 1, cy + i);
1.201 nicm 763: screen_write_cell(ctx, &gc);
1.202 nicm 764: }
765:
766: if (title != NULL) {
767: gc.attr &= ~GRID_ATTR_CHARSET;
768: screen_write_cursormove(ctx, cx + 2, cy, 0);
1.205 nicm 769: format_draw(ctx, &gc, nx - 4, title, NULL, 0);
1.125 nicm 770: }
771:
1.144 nicm 772: screen_write_set_cursor(ctx, cx, cy);
1.125 nicm 773: }
774:
1.132 nicm 775: /*
776: * Write a preview version of a window. Assumes target area is big enough and
777: * already cleared.
778: */
1.125 nicm 779: void
780: screen_write_preview(struct screen_write_ctx *ctx, struct screen *src, u_int nx,
781: u_int ny)
782: {
783: struct screen *s = ctx->s;
784: struct grid_cell gc;
785: u_int cx, cy, px, py;
786:
787: cx = s->cx;
788: cy = s->cy;
789:
790: /*
791: * If the cursor is on, pick the area around the cursor, otherwise use
792: * the top left.
793: */
794: if (src->mode & MODE_CURSOR) {
795: px = src->cx;
796: if (px < nx / 3)
797: px = 0;
798: else
799: px = px - nx / 3;
800: if (px + nx > screen_size_x(src)) {
801: if (nx > screen_size_x(src))
802: px = 0;
803: else
804: px = screen_size_x(src) - nx;
805: }
806: py = src->cy;
807: if (py < ny / 3)
808: py = 0;
809: else
810: py = py - ny / 3;
811: if (py + ny > screen_size_y(src)) {
812: if (ny > screen_size_y(src))
813: py = 0;
814: else
815: py = screen_size_y(src) - ny;
816: }
817: } else {
818: px = 0;
819: py = 0;
820: }
821:
1.132 nicm 822: screen_write_fast_copy(ctx, src, px, src->grid->hsize + py, nx, ny);
1.125 nicm 823:
824: if (src->mode & MODE_CURSOR) {
825: grid_view_get_cell(src->grid, src->cx, src->cy, &gc);
826: gc.attr |= GRID_ATTR_REVERSE;
1.144 nicm 827: screen_write_set_cursor(ctx, cx + (src->cx - px),
1.125 nicm 828: cy + (src->cy - py));
829: screen_write_cell(ctx, &gc);
1.1 nicm 830: }
831: }
832:
1.61 nicm 833: /* Set a mode. */
834: void
835: screen_write_mode_set(struct screen_write_ctx *ctx, int mode)
836: {
837: struct screen *s = ctx->s;
838:
839: s->mode |= mode;
1.194 nicm 840:
841: if (log_get_level() != 0)
842: log_debug("%s: %s", __func__, screen_mode_to_string(mode));
1.61 nicm 843: }
844:
845: /* Clear a mode. */
846: void
847: screen_write_mode_clear(struct screen_write_ctx *ctx, int mode)
848: {
849: struct screen *s = ctx->s;
850:
851: s->mode &= ~mode;
1.194 nicm 852:
853: if (log_get_level() != 0)
854: log_debug("%s: %s", __func__, screen_mode_to_string(mode));
1.61 nicm 855: }
856:
1.1 nicm 857: /* Cursor up by ny. */
858: void
859: screen_write_cursorup(struct screen_write_ctx *ctx, u_int ny)
860: {
861: struct screen *s = ctx->s;
1.139 nicm 862: u_int cx = s->cx, cy = s->cy;
1.1 nicm 863:
864: if (ny == 0)
865: ny = 1;
866:
1.139 nicm 867: if (cy < s->rupper) {
1.12 nicm 868: /* Above region. */
1.139 nicm 869: if (ny > cy)
870: ny = cy;
1.12 nicm 871: } else {
872: /* Below region. */
1.139 nicm 873: if (ny > cy - s->rupper)
874: ny = cy - s->rupper;
1.12 nicm 875: }
1.139 nicm 876: if (cx == screen_size_x(s))
877: cx--;
878:
879: cy -= ny;
1.1 nicm 880:
1.139 nicm 881: screen_write_set_cursor(ctx, cx, cy);
1.1 nicm 882: }
883:
884: /* Cursor down by ny. */
885: void
886: screen_write_cursordown(struct screen_write_ctx *ctx, u_int ny)
887: {
888: struct screen *s = ctx->s;
1.139 nicm 889: u_int cx = s->cx, cy = s->cy;
1.1 nicm 890:
891: if (ny == 0)
892: ny = 1;
893:
1.139 nicm 894: if (cy > s->rlower) {
1.12 nicm 895: /* Below region. */
1.139 nicm 896: if (ny > screen_size_y(s) - 1 - cy)
897: ny = screen_size_y(s) - 1 - cy;
1.12 nicm 898: } else {
899: /* Above region. */
1.139 nicm 900: if (ny > s->rlower - cy)
901: ny = s->rlower - cy;
1.12 nicm 902: }
1.139 nicm 903: if (cx == screen_size_x(s))
904: cx--;
905: else if (ny == 0)
1.1 nicm 906: return;
907:
1.139 nicm 908: cy += ny;
909:
910: screen_write_set_cursor(ctx, cx, cy);
1.1 nicm 911: }
912:
1.101 nicm 913: /* Cursor right by nx. */
1.1 nicm 914: void
915: screen_write_cursorright(struct screen_write_ctx *ctx, u_int nx)
916: {
917: struct screen *s = ctx->s;
1.139 nicm 918: u_int cx = s->cx, cy = s->cy;
1.1 nicm 919:
920: if (nx == 0)
921: nx = 1;
922:
1.139 nicm 923: if (nx > screen_size_x(s) - 1 - cx)
924: nx = screen_size_x(s) - 1 - cx;
1.1 nicm 925: if (nx == 0)
926: return;
927:
1.139 nicm 928: cx += nx;
929:
930: screen_write_set_cursor(ctx, cx, cy);
1.1 nicm 931: }
932:
933: /* Cursor left by nx. */
934: void
935: screen_write_cursorleft(struct screen_write_ctx *ctx, u_int nx)
936: {
937: struct screen *s = ctx->s;
1.139 nicm 938: u_int cx = s->cx, cy = s->cy;
1.1 nicm 939:
940: if (nx == 0)
941: nx = 1;
942:
1.139 nicm 943: if (nx > cx)
944: nx = cx;
1.1 nicm 945: if (nx == 0)
946: return;
947:
1.139 nicm 948: cx -= nx;
949:
950: screen_write_set_cursor(ctx, cx, cy);
1.5 nicm 951: }
952:
1.29 nicm 953: /* Backspace; cursor left unless at start of wrapped line when can move up. */
954: void
955: screen_write_backspace(struct screen_write_ctx *ctx)
956: {
957: struct screen *s = ctx->s;
958: struct grid_line *gl;
1.139 nicm 959: u_int cx = s->cx, cy = s->cy;
1.29 nicm 960:
1.139 nicm 961: if (cx == 0) {
962: if (cy == 0)
1.29 nicm 963: return;
1.139 nicm 964: gl = grid_get_line(s->grid, s->grid->hsize + cy - 1);
1.29 nicm 965: if (gl->flags & GRID_LINE_WRAPPED) {
1.139 nicm 966: cy--;
967: cx = screen_size_x(s) - 1;
1.29 nicm 968: }
969: } else
1.139 nicm 970: cx--;
971:
972: screen_write_set_cursor(ctx, cx, cy);
1.29 nicm 973: }
974:
1.5 nicm 975: /* VT100 alignment test. */
976: void
977: screen_write_alignmenttest(struct screen_write_ctx *ctx)
978: {
979: struct screen *s = ctx->s;
1.17 nicm 980: struct tty_ctx ttyctx;
1.5 nicm 981: struct grid_cell gc;
982: u_int xx, yy;
983:
984: memcpy(&gc, &grid_default_cell, sizeof gc);
1.77 nicm 985: utf8_set(&gc.data, 'E');
1.7 ray 986:
1.5 nicm 987: for (yy = 0; yy < screen_size_y(s); yy++) {
988: for (xx = 0; xx < screen_size_x(s); xx++)
989: grid_view_set_cell(s->grid, xx, yy, &gc);
990: }
1.7 ray 991:
1.139 nicm 992: screen_write_set_cursor(ctx, 0, 0);
1.5 nicm 993:
994: s->rupper = 0;
995: s->rlower = screen_size_y(s) - 1;
1.143 nicm 996:
1.163 nicm 997: screen_write_initctx(ctx, &ttyctx, 1);
1.5 nicm 998:
1.109 nicm 999: screen_write_collect_clear(ctx, 0, screen_size_y(s) - 1);
1.17 nicm 1000: tty_write(tty_cmd_alignmenttest, &ttyctx);
1.1 nicm 1001: }
1002:
1003: /* Insert nx characters. */
1004: void
1.99 nicm 1005: screen_write_insertcharacter(struct screen_write_ctx *ctx, u_int nx, u_int bg)
1.1 nicm 1006: {
1007: struct screen *s = ctx->s;
1.17 nicm 1008: struct tty_ctx ttyctx;
1.1 nicm 1009:
1010: if (nx == 0)
1011: nx = 1;
1012:
1.9 nicm 1013: if (nx > screen_size_x(s) - s->cx)
1014: nx = screen_size_x(s) - s->cx;
1.1 nicm 1015: if (nx == 0)
1016: return;
1017:
1.107 nicm 1018: if (s->cx > screen_size_x(s) - 1)
1019: return;
1020:
1.163 nicm 1021: screen_write_initctx(ctx, &ttyctx, 0);
1.107 nicm 1022: ttyctx.bg = bg;
1.1 nicm 1023:
1.107 nicm 1024: grid_view_insert_cells(s->grid, s->cx, s->cy, nx, bg);
1.1 nicm 1025:
1.164 nicm 1026: screen_write_collect_flush(ctx, 0, __func__);
1.17 nicm 1027: ttyctx.num = nx;
1028: tty_write(tty_cmd_insertcharacter, &ttyctx);
1.1 nicm 1029: }
1030:
1031: /* Delete nx characters. */
1032: void
1.99 nicm 1033: screen_write_deletecharacter(struct screen_write_ctx *ctx, u_int nx, u_int bg)
1.1 nicm 1034: {
1035: struct screen *s = ctx->s;
1.17 nicm 1036: struct tty_ctx ttyctx;
1.1 nicm 1037:
1038: if (nx == 0)
1039: nx = 1;
1040:
1.9 nicm 1041: if (nx > screen_size_x(s) - s->cx)
1042: nx = screen_size_x(s) - s->cx;
1.1 nicm 1043: if (nx == 0)
1044: return;
1045:
1.107 nicm 1046: if (s->cx > screen_size_x(s) - 1)
1047: return;
1048:
1.163 nicm 1049: screen_write_initctx(ctx, &ttyctx, 0);
1.107 nicm 1050: ttyctx.bg = bg;
1.1 nicm 1051:
1.107 nicm 1052: grid_view_delete_cells(s->grid, s->cx, s->cy, nx, bg);
1.1 nicm 1053:
1.164 nicm 1054: screen_write_collect_flush(ctx, 0, __func__);
1.17 nicm 1055: ttyctx.num = nx;
1056: tty_write(tty_cmd_deletecharacter, &ttyctx);
1.59 nicm 1057: }
1058:
1059: /* Clear nx characters. */
1060: void
1.121 nicm 1061: screen_write_clearcharacter(struct screen_write_ctx *ctx, u_int nx, u_int bg)
1.59 nicm 1062: {
1063: struct screen *s = ctx->s;
1064: struct tty_ctx ttyctx;
1065:
1066: if (nx == 0)
1067: nx = 1;
1068:
1069: if (nx > screen_size_x(s) - s->cx)
1070: nx = screen_size_x(s) - s->cx;
1071: if (nx == 0)
1072: return;
1073:
1.107 nicm 1074: if (s->cx > screen_size_x(s) - 1)
1075: return;
1076:
1.163 nicm 1077: screen_write_initctx(ctx, &ttyctx, 0);
1.121 nicm 1078: ttyctx.bg = bg;
1.59 nicm 1079:
1.124 nicm 1080: grid_view_clear(s->grid, s->cx, s->cy, nx, 1, bg);
1.59 nicm 1081:
1.164 nicm 1082: screen_write_collect_flush(ctx, 0, __func__);
1.59 nicm 1083: ttyctx.num = nx;
1084: tty_write(tty_cmd_clearcharacter, &ttyctx);
1.1 nicm 1085: }
1086:
1087: /* Insert ny lines. */
1088: void
1.99 nicm 1089: screen_write_insertline(struct screen_write_ctx *ctx, u_int ny, u_int bg)
1.1 nicm 1090: {
1091: struct screen *s = ctx->s;
1.107 nicm 1092: struct grid *gd = s->grid;
1.17 nicm 1093: struct tty_ctx ttyctx;
1.1 nicm 1094:
1095: if (ny == 0)
1096: ny = 1;
1097:
1.11 nicm 1098: if (s->cy < s->rupper || s->cy > s->rlower) {
1099: if (ny > screen_size_y(s) - s->cy)
1100: ny = screen_size_y(s) - s->cy;
1101: if (ny == 0)
1102: return;
1103:
1.163 nicm 1104: screen_write_initctx(ctx, &ttyctx, 1);
1.107 nicm 1105: ttyctx.bg = bg;
1.11 nicm 1106:
1.107 nicm 1107: grid_view_insert_lines(gd, s->cy, ny, bg);
1.11 nicm 1108:
1.164 nicm 1109: screen_write_collect_flush(ctx, 0, __func__);
1.17 nicm 1110: ttyctx.num = ny;
1111: tty_write(tty_cmd_insertline, &ttyctx);
1.11 nicm 1112: return;
1113: }
1114:
1115: if (ny > s->rlower + 1 - s->cy)
1116: ny = s->rlower + 1 - s->cy;
1.1 nicm 1117: if (ny == 0)
1118: return;
1.41 nicm 1119:
1.163 nicm 1120: screen_write_initctx(ctx, &ttyctx, 1);
1.107 nicm 1121: ttyctx.bg = bg;
1.1 nicm 1122:
1123: if (s->cy < s->rupper || s->cy > s->rlower)
1.107 nicm 1124: grid_view_insert_lines(gd, s->cy, ny, bg);
1125: else
1126: grid_view_insert_lines_region(gd, s->rlower, s->cy, ny, bg);
1.1 nicm 1127:
1.164 nicm 1128: screen_write_collect_flush(ctx, 0, __func__);
1129:
1.17 nicm 1130: ttyctx.num = ny;
1131: tty_write(tty_cmd_insertline, &ttyctx);
1.1 nicm 1132: }
1133:
1134: /* Delete ny lines. */
1135: void
1.99 nicm 1136: screen_write_deleteline(struct screen_write_ctx *ctx, u_int ny, u_int bg)
1.1 nicm 1137: {
1138: struct screen *s = ctx->s;
1.107 nicm 1139: struct grid *gd = s->grid;
1.17 nicm 1140: struct tty_ctx ttyctx;
1.1 nicm 1141:
1142: if (ny == 0)
1143: ny = 1;
1144:
1.11 nicm 1145: if (s->cy < s->rupper || s->cy > s->rlower) {
1146: if (ny > screen_size_y(s) - s->cy)
1147: ny = screen_size_y(s) - s->cy;
1148: if (ny == 0)
1149: return;
1150:
1.163 nicm 1151: screen_write_initctx(ctx, &ttyctx, 1);
1.107 nicm 1152: ttyctx.bg = bg;
1.11 nicm 1153:
1.107 nicm 1154: grid_view_delete_lines(gd, s->cy, ny, bg);
1.11 nicm 1155:
1.164 nicm 1156: screen_write_collect_flush(ctx, 0, __func__);
1.17 nicm 1157: ttyctx.num = ny;
1158: tty_write(tty_cmd_deleteline, &ttyctx);
1.11 nicm 1159: return;
1160: }
1.41 nicm 1161:
1.11 nicm 1162: if (ny > s->rlower + 1 - s->cy)
1163: ny = s->rlower + 1 - s->cy;
1.1 nicm 1164: if (ny == 0)
1165: return;
1166:
1.163 nicm 1167: screen_write_initctx(ctx, &ttyctx, 1);
1.107 nicm 1168: ttyctx.bg = bg;
1.1 nicm 1169:
1170: if (s->cy < s->rupper || s->cy > s->rlower)
1.107 nicm 1171: grid_view_delete_lines(gd, s->cy, ny, bg);
1172: else
1173: grid_view_delete_lines_region(gd, s->rlower, s->cy, ny, bg);
1.1 nicm 1174:
1.164 nicm 1175: screen_write_collect_flush(ctx, 0, __func__);
1.17 nicm 1176: ttyctx.num = ny;
1177: tty_write(tty_cmd_deleteline, &ttyctx);
1.1 nicm 1178: }
1179:
1180: /* Clear line at cursor. */
1181: void
1.99 nicm 1182: screen_write_clearline(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1183: {
1.193 nicm 1184: struct screen *s = ctx->s;
1185: struct grid_line *gl;
1186: u_int sx = screen_size_x(s);
1187: struct screen_write_citem *ci = ctx->item;
1.1 nicm 1188:
1.137 nicm 1189: gl = grid_get_line(s->grid, s->grid->hsize + s->cy);
1.140 nicm 1190: if (gl->cellsize == 0 && COLOUR_DEFAULT(bg))
1.92 nicm 1191: return;
1.1 nicm 1192:
1.99 nicm 1193: grid_view_clear(s->grid, 0, s->cy, sx, 1, bg);
1194:
1.109 nicm 1195: screen_write_collect_clear(ctx, s->cy, 1);
1.193 nicm 1196: ci->x = 0;
1197: ci->used = sx;
1198: ci->type = CLEAR;
1199: ci->bg = bg;
1200: TAILQ_INSERT_TAIL(&ctx->s->write_list[s->cy].items, ci, entry);
1201: ctx->item = screen_write_get_citem();
1.1 nicm 1202: }
1203:
1204: /* Clear to end of line from cursor. */
1205: void
1.99 nicm 1206: screen_write_clearendofline(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1207: {
1.193 nicm 1208: struct screen *s = ctx->s;
1209: struct grid_line *gl;
1210: u_int sx = screen_size_x(s);
1211: struct screen_write_citem *ci = ctx->item, *before;
1.165 nicm 1212:
1213: if (s->cx == 0) {
1214: screen_write_clearline(ctx, bg);
1215: return;
1216: }
1.1 nicm 1217:
1.137 nicm 1218: gl = grid_get_line(s->grid, s->grid->hsize + s->cy);
1.140 nicm 1219: if (s->cx > sx - 1 || (s->cx >= gl->cellsize && COLOUR_DEFAULT(bg)))
1.92 nicm 1220: return;
1.108 nicm 1221:
1.99 nicm 1222: grid_view_clear(s->grid, s->cx, s->cy, sx - s->cx, 1, bg);
1223:
1.193 nicm 1224: before = screen_write_collect_trim(ctx, s->cy, s->cx, sx - s->cx, NULL);
1.186 nicm 1225: ci->x = s->cx;
1.193 nicm 1226: ci->used = sx - s->cx;
1227: ci->type = CLEAR;
1.186 nicm 1228: ci->bg = bg;
1.193 nicm 1229: if (before == NULL)
1230: TAILQ_INSERT_TAIL(&ctx->s->write_list[s->cy].items, ci, entry);
1231: else
1232: TAILQ_INSERT_BEFORE(before, ci, entry);
1233: ctx->item = screen_write_get_citem();
1.1 nicm 1234: }
1235:
1236: /* Clear to start of line from cursor. */
1237: void
1.99 nicm 1238: screen_write_clearstartofline(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1239: {
1.165 nicm 1240: struct screen *s = ctx->s;
1.193 nicm 1241: u_int sx = screen_size_x(s);
1242: struct screen_write_citem *ci = ctx->item, *before;
1.165 nicm 1243:
1244: if (s->cx >= sx - 1) {
1245: screen_write_clearline(ctx, bg);
1246: return;
1247: }
1.1 nicm 1248:
1.109 nicm 1249: if (s->cx > sx - 1)
1.99 nicm 1250: grid_view_clear(s->grid, 0, s->cy, sx, 1, bg);
1.109 nicm 1251: else
1.99 nicm 1252: grid_view_clear(s->grid, 0, s->cy, s->cx + 1, 1, bg);
1.1 nicm 1253:
1.193 nicm 1254: before = screen_write_collect_trim(ctx, s->cy, 0, s->cx + 1, NULL);
1255: ci->x = 0;
1256: ci->used = s->cx + 1;
1257: ci->type = CLEAR;
1.186 nicm 1258: ci->bg = bg;
1.193 nicm 1259: if (before == NULL)
1260: TAILQ_INSERT_TAIL(&ctx->s->write_list[s->cy].items, ci, entry);
1261: else
1262: TAILQ_INSERT_BEFORE(before, ci, entry);
1263: ctx->item = screen_write_get_citem();
1.1 nicm 1264: }
1265:
1.101 nicm 1266: /* Move cursor to px,py. */
1.1 nicm 1267: void
1.147 nicm 1268: screen_write_cursormove(struct screen_write_ctx *ctx, int px, int py,
1269: int origin)
1.1 nicm 1270: {
1271: struct screen *s = ctx->s;
1272:
1.147 nicm 1273: if (origin && py != -1 && (s->mode & MODE_ORIGIN)) {
1.146 nicm 1274: if ((u_int)py > s->rlower - s->rupper)
1.144 nicm 1275: py = s->rlower;
1276: else
1277: py += s->rupper;
1278: }
1.145 nicm 1279:
1.146 nicm 1280: if (px != -1 && (u_int)px > screen_size_x(s) - 1)
1.145 nicm 1281: px = screen_size_x(s) - 1;
1.146 nicm 1282: if (py != -1 && (u_int)py > screen_size_y(s) - 1)
1.145 nicm 1283: py = screen_size_y(s) - 1;
1.1 nicm 1284:
1.193 nicm 1285: log_debug("%s: from %u,%u to %u,%u", __func__, s->cx, s->cy, px, py);
1.139 nicm 1286: screen_write_set_cursor(ctx, px, py);
1.1 nicm 1287: }
1288:
1.101 nicm 1289: /* Reverse index (up with scroll). */
1.1 nicm 1290: void
1.122 nicm 1291: screen_write_reverseindex(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1292: {
1293: struct screen *s = ctx->s;
1.17 nicm 1294: struct tty_ctx ttyctx;
1.1 nicm 1295:
1.165 nicm 1296: if (s->cy == s->rupper) {
1297: grid_view_scroll_region_down(s->grid, s->rupper, s->rlower, bg);
1298: screen_write_collect_flush(ctx, 0, __func__);
1299:
1300: screen_write_initctx(ctx, &ttyctx, 1);
1301: ttyctx.bg = bg;
1.1 nicm 1302:
1.165 nicm 1303: tty_write(tty_cmd_reverseindex, &ttyctx);
1304: } else if (s->cy > 0)
1.139 nicm 1305: screen_write_set_cursor(ctx, -1, s->cy - 1);
1.1 nicm 1306:
1307: }
1308:
1309: /* Set scroll region. */
1310: void
1.83 nicm 1311: screen_write_scrollregion(struct screen_write_ctx *ctx, u_int rupper,
1312: u_int rlower)
1.1 nicm 1313: {
1314: struct screen *s = ctx->s;
1315:
1316: if (rupper > screen_size_y(s) - 1)
1317: rupper = screen_size_y(s) - 1;
1318: if (rlower > screen_size_y(s) - 1)
1319: rlower = screen_size_y(s) - 1;
1.13 nicm 1320: if (rupper >= rlower) /* cannot be one line */
1.1 nicm 1321: return;
1322:
1.164 nicm 1323: screen_write_collect_flush(ctx, 0, __func__);
1.110 nicm 1324:
1.1 nicm 1325: /* Cursor moves to top-left. */
1.139 nicm 1326: screen_write_set_cursor(ctx, 0, 0);
1.1 nicm 1327:
1328: s->rupper = rupper;
1329: s->rlower = rlower;
1330: }
1331:
1.34 nicm 1332: /* Line feed. */
1.1 nicm 1333: void
1.122 nicm 1334: screen_write_linefeed(struct screen_write_ctx *ctx, int wrapped, u_int bg)
1.1 nicm 1335: {
1.20 nicm 1336: struct screen *s = ctx->s;
1.109 nicm 1337: struct grid *gd = s->grid;
1.20 nicm 1338: struct grid_line *gl;
1.1 nicm 1339:
1.137 nicm 1340: gl = grid_get_line(gd, gd->hsize + s->cy);
1.20 nicm 1341: if (wrapped)
1342: gl->flags |= GRID_LINE_WRAPPED;
1343:
1.114 nicm 1344: log_debug("%s: at %u,%u (region %u-%u)", __func__, s->cx, s->cy,
1345: s->rupper, s->rlower);
1346:
1.122 nicm 1347: if (bg != ctx->bg) {
1.164 nicm 1348: screen_write_collect_flush(ctx, 1, __func__);
1.122 nicm 1349: ctx->bg = bg;
1350: }
1351:
1.92 nicm 1352: if (s->cy == s->rlower) {
1.122 nicm 1353: grid_view_scroll_region_up(gd, s->rupper, s->rlower, bg);
1.193 nicm 1354: screen_write_collect_scroll(ctx, bg);
1.110 nicm 1355: ctx->scrolled++;
1.109 nicm 1356: } else if (s->cy < screen_size_y(s) - 1)
1.139 nicm 1357: screen_write_set_cursor(ctx, -1, s->cy + 1);
1.1 nicm 1358: }
1359:
1.110 nicm 1360: /* Scroll up. */
1361: void
1.122 nicm 1362: screen_write_scrollup(struct screen_write_ctx *ctx, u_int lines, u_int bg)
1.110 nicm 1363: {
1364: struct screen *s = ctx->s;
1365: struct grid *gd = s->grid;
1366: u_int i;
1367:
1368: if (lines == 0)
1369: lines = 1;
1370: else if (lines > s->rlower - s->rupper + 1)
1371: lines = s->rlower - s->rupper + 1;
1372:
1.122 nicm 1373: if (bg != ctx->bg) {
1.164 nicm 1374: screen_write_collect_flush(ctx, 1, __func__);
1.122 nicm 1375: ctx->bg = bg;
1376: }
1377:
1.110 nicm 1378: for (i = 0; i < lines; i++) {
1.122 nicm 1379: grid_view_scroll_region_up(gd, s->rupper, s->rlower, bg);
1.193 nicm 1380: screen_write_collect_scroll(ctx, bg);
1.110 nicm 1381: }
1382: ctx->scrolled += lines;
1.157 nicm 1383: }
1384:
1385: /* Scroll down. */
1386: void
1387: screen_write_scrolldown(struct screen_write_ctx *ctx, u_int lines, u_int bg)
1388: {
1389: struct screen *s = ctx->s;
1390: struct grid *gd = s->grid;
1391: struct tty_ctx ttyctx;
1392: u_int i;
1393:
1.163 nicm 1394: screen_write_initctx(ctx, &ttyctx, 1);
1.157 nicm 1395: ttyctx.bg = bg;
1396:
1397: if (lines == 0)
1398: lines = 1;
1399: else if (lines > s->rlower - s->rupper + 1)
1400: lines = s->rlower - s->rupper + 1;
1401:
1402: for (i = 0; i < lines; i++)
1403: grid_view_scroll_region_down(gd, s->rupper, s->rlower, bg);
1404:
1.164 nicm 1405: screen_write_collect_flush(ctx, 0, __func__);
1.157 nicm 1406: ttyctx.num = lines;
1407: tty_write(tty_cmd_scrolldown, &ttyctx);
1.110 nicm 1408: }
1409:
1.1 nicm 1410: /* Carriage return (cursor to start of line). */
1411: void
1412: screen_write_carriagereturn(struct screen_write_ctx *ctx)
1413: {
1.139 nicm 1414: screen_write_set_cursor(ctx, 0, -1);
1.1 nicm 1415: }
1416:
1417: /* Clear to end of screen from cursor. */
1418: void
1.99 nicm 1419: screen_write_clearendofscreen(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1420: {
1421: struct screen *s = ctx->s;
1.107 nicm 1422: struct grid *gd = s->grid;
1.17 nicm 1423: struct tty_ctx ttyctx;
1.92 nicm 1424: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.1 nicm 1425:
1.163 nicm 1426: screen_write_initctx(ctx, &ttyctx, 1);
1.99 nicm 1427: ttyctx.bg = bg;
1.1 nicm 1428:
1.46 nicm 1429: /* Scroll into history if it is enabled and clearing entire screen. */
1.206 ! nicm 1430: if (s->cx == 0 &&
! 1431: s->cy == 0 &&
! 1432: (gd->flags & GRID_HISTORY) &&
! 1433: ctx->wp != NULL &&
! 1434: options_get_number(ctx->wp->options, "scroll-on-clear"))
1.107 nicm 1435: grid_view_clear_history(gd, bg);
1.109 nicm 1436: else {
1437: if (s->cx <= sx - 1)
1.107 nicm 1438: grid_view_clear(gd, s->cx, s->cy, sx - s->cx, 1, bg);
1439: grid_view_clear(gd, 0, s->cy + 1, sx, sy - (s->cy + 1), bg);
1.46 nicm 1440: }
1.1 nicm 1441:
1.109 nicm 1442: screen_write_collect_clear(ctx, s->cy + 1, sy - (s->cy + 1));
1.164 nicm 1443: screen_write_collect_flush(ctx, 0, __func__);
1.17 nicm 1444: tty_write(tty_cmd_clearendofscreen, &ttyctx);
1.1 nicm 1445: }
1446:
1447: /* Clear to start of screen. */
1448: void
1.105 nicm 1449: screen_write_clearstartofscreen(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1450: {
1451: struct screen *s = ctx->s;
1.17 nicm 1452: struct tty_ctx ttyctx;
1.92 nicm 1453: u_int sx = screen_size_x(s);
1.1 nicm 1454:
1.163 nicm 1455: screen_write_initctx(ctx, &ttyctx, 1);
1.105 nicm 1456: ttyctx.bg = bg;
1.1 nicm 1457:
1.109 nicm 1458: if (s->cy > 0)
1.105 nicm 1459: grid_view_clear(s->grid, 0, 0, sx, s->cy, bg);
1.109 nicm 1460: if (s->cx > sx - 1)
1.120 nicm 1461: grid_view_clear(s->grid, 0, s->cy, sx, 1, bg);
1.109 nicm 1462: else
1.120 nicm 1463: grid_view_clear(s->grid, 0, s->cy, s->cx + 1, 1, bg);
1.1 nicm 1464:
1.109 nicm 1465: screen_write_collect_clear(ctx, 0, s->cy);
1.164 nicm 1466: screen_write_collect_flush(ctx, 0, __func__);
1.17 nicm 1467: tty_write(tty_cmd_clearstartofscreen, &ttyctx);
1.1 nicm 1468: }
1469:
1470: /* Clear entire screen. */
1471: void
1.99 nicm 1472: screen_write_clearscreen(struct screen_write_ctx *ctx, u_int bg)
1.1 nicm 1473: {
1474: struct screen *s = ctx->s;
1.17 nicm 1475: struct tty_ctx ttyctx;
1.92 nicm 1476: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.1 nicm 1477:
1.163 nicm 1478: screen_write_initctx(ctx, &ttyctx, 1);
1.99 nicm 1479: ttyctx.bg = bg;
1.1 nicm 1480:
1.46 nicm 1481: /* Scroll into history if it is enabled. */
1482: if (s->grid->flags & GRID_HISTORY)
1.99 nicm 1483: grid_view_clear_history(s->grid, bg);
1.83 nicm 1484: else
1.99 nicm 1485: grid_view_clear(s->grid, 0, 0, sx, sy, bg);
1.1 nicm 1486:
1.109 nicm 1487: screen_write_collect_clear(ctx, 0, sy);
1.17 nicm 1488: tty_write(tty_cmd_clearscreen, &ttyctx);
1.51 nicm 1489: }
1490:
1491: /* Clear entire history. */
1492: void
1493: screen_write_clearhistory(struct screen_write_ctx *ctx)
1494: {
1.156 nicm 1495: grid_clear_history(ctx->s->grid);
1.197 nicm 1496: }
1497:
1498: /* Force a full redraw. */
1499: void
1500: screen_write_fullredraw(struct screen_write_ctx *ctx)
1501: {
1502: struct tty_ctx ttyctx;
1503:
1504: screen_write_collect_flush(ctx, 0, __func__);
1505:
1506: screen_write_initctx(ctx, &ttyctx, 1);
1507: ttyctx.redraw_cb(&ttyctx);
1.1 nicm 1508: }
1509:
1.193 nicm 1510: /* Trim collected items. */
1511: static struct screen_write_citem *
1512: screen_write_collect_trim(struct screen_write_ctx *ctx, u_int y, u_int x,
1513: u_int used, int *wrapped)
1514: {
1515: struct screen_write_cline *cl = &ctx->s->write_list[y];
1516: struct screen_write_citem *ci, *ci2, *tmp, *before = NULL;
1517: u_int sx = x, ex = x + used - 1;
1518: u_int csx, cex;
1519:
1520: if (TAILQ_EMPTY(&cl->items))
1521: return (NULL);
1522: TAILQ_FOREACH_SAFE(ci, &cl->items, entry, tmp) {
1523: csx = ci->x;
1524: cex = ci->x + ci->used - 1;
1525:
1526: /* Item is entirely before. */
1527: if (cex < sx) {
1528: log_debug("%s: %p %u-%u before %u-%u", __func__, ci,
1529: csx, cex, sx, ex);
1530: continue;
1531: }
1.165 nicm 1532:
1.193 nicm 1533: /* Item is entirely after. */
1534: if (csx > ex) {
1535: log_debug("%s: %p %u-%u after %u-%u", __func__, ci,
1536: csx, cex, sx, ex);
1537: before = ci;
1.165 nicm 1538: break;
1.193 nicm 1539: }
1540:
1541: /* Item is entirely inside. */
1542: if (csx >= sx && cex <= ex) {
1543: log_debug("%s: %p %u-%u inside %u-%u", __func__, ci,
1544: csx, cex, sx, ex);
1545: TAILQ_REMOVE(&cl->items, ci, entry);
1546: screen_write_free_citem(ci);
1547: if (csx == 0 && ci->wrapped && wrapped != NULL)
1548: *wrapped = 1;
1.165 nicm 1549: continue;
1550: }
1551:
1.193 nicm 1552: /* Item under the start. */
1553: if (csx < sx && cex >= sx && cex <= ex) {
1554: log_debug("%s: %p %u-%u start %u-%u", __func__, ci,
1555: csx, cex, sx, ex);
1556: ci->used = sx - csx;
1557: log_debug("%s: %p now %u-%u", __func__, ci, ci->x,
1558: ci->x + ci->used + 1);
1.165 nicm 1559: continue;
1.193 nicm 1560: }
1561:
1562: /* Item covers the end. */
1563: if (cex > ex && csx >= sx && csx <= ex) {
1564: log_debug("%s: %p %u-%u end %u-%u", __func__, ci,
1565: csx, cex, sx, ex);
1566: ci->x = ex + 1;
1567: ci->used = cex - ex;
1568: log_debug("%s: %p now %u-%u", __func__, ci, ci->x,
1569: ci->x + ci->used + 1);
1570: before = ci;
1.165 nicm 1571: break;
1572: }
1.193 nicm 1573:
1574: /* Item must cover both sides. */
1575: log_debug("%s: %p %u-%u under %u-%u", __func__, ci,
1576: csx, cex, sx, ex);
1577: ci2 = screen_write_get_citem();
1578: ci2->type = ci->type;
1579: ci2->bg = ci->bg;
1580: memcpy(&ci2->gc, &ci->gc, sizeof ci2->gc);
1581: TAILQ_INSERT_AFTER(&cl->items, ci, ci2, entry);
1582:
1583: ci->used = sx - csx;
1584: ci2->x = ex + 1;
1585: ci2->used = cex - ex;
1586:
1587: log_debug("%s: %p now %u-%u (%p) and %u-%u (%p)", __func__, ci,
1588: ci->x, ci->x + ci->used - 1, ci, ci2->x,
1589: ci2->x + ci2->used - 1, ci2);
1590: before = ci2;
1591: break;
1592: }
1593: return (before);
1.165 nicm 1594: }
1595:
1.170 nicm 1596: /* Clear collected lines. */
1.109 nicm 1597: static void
1598: screen_write_collect_clear(struct screen_write_ctx *ctx, u_int y, u_int n)
1599: {
1.193 nicm 1600: struct screen_write_cline *cl;
1601: u_int i;
1.109 nicm 1602:
1.151 nicm 1603: for (i = y; i < y + n; i++) {
1.172 nicm 1604: cl = &ctx->s->write_list[i];
1.193 nicm 1605: TAILQ_CONCAT(&screen_write_citem_freelist, &cl->items, entry);
1.109 nicm 1606: }
1607: }
1608:
1609: /* Scroll collected lines up. */
1610: static void
1.193 nicm 1611: screen_write_collect_scroll(struct screen_write_ctx *ctx, u_int bg)
1.109 nicm 1612: {
1.193 nicm 1613: struct screen *s = ctx->s;
1614: struct screen_write_cline *cl;
1615: u_int y;
1616: char *saved;
1617: struct screen_write_citem *ci;
1.109 nicm 1618:
1.114 nicm 1619: log_debug("%s: at %u,%u (region %u-%u)", __func__, s->cx, s->cy,
1620: s->rupper, s->rlower);
1621:
1.109 nicm 1622: screen_write_collect_clear(ctx, s->rupper, 1);
1.172 nicm 1623: saved = ctx->s->write_list[s->rupper].data;
1.109 nicm 1624: for (y = s->rupper; y < s->rlower; y++) {
1.172 nicm 1625: cl = &ctx->s->write_list[y + 1];
1626: TAILQ_CONCAT(&ctx->s->write_list[y].items, &cl->items, entry);
1627: ctx->s->write_list[y].data = cl->data;
1.109 nicm 1628: }
1.172 nicm 1629: ctx->s->write_list[s->rlower].data = saved;
1.193 nicm 1630:
1631: ci = screen_write_get_citem();
1632: ci->x = 0;
1633: ci->used = screen_size_x(s);
1634: ci->type = CLEAR;
1635: ci->bg = bg;
1636: TAILQ_INSERT_TAIL(&ctx->s->write_list[s->rlower].items, ci, entry);
1.109 nicm 1637: }
1638:
1639: /* Flush collected lines. */
1640: static void
1.164 nicm 1641: screen_write_collect_flush(struct screen_write_ctx *ctx, int scroll_only,
1642: const char *from)
1.109 nicm 1643: {
1.193 nicm 1644: struct screen *s = ctx->s;
1645: struct screen_write_citem *ci, *tmp;
1646: struct screen_write_cline *cl;
1647: u_int y, cx, cy, last, items = 0;
1648: struct tty_ctx ttyctx;
1.110 nicm 1649:
1650: if (ctx->scrolled != 0) {
1651: log_debug("%s: scrolled %u (region %u-%u)", __func__,
1652: ctx->scrolled, s->rupper, s->rlower);
1653: if (ctx->scrolled > s->rlower - s->rupper + 1)
1654: ctx->scrolled = s->rlower - s->rupper + 1;
1655:
1.163 nicm 1656: screen_write_initctx(ctx, &ttyctx, 1);
1.110 nicm 1657: ttyctx.num = ctx->scrolled;
1.122 nicm 1658: ttyctx.bg = ctx->bg;
1.110 nicm 1659: tty_write(tty_cmd_scrollup, &ttyctx);
1660: }
1661: ctx->scrolled = 0;
1.122 nicm 1662: ctx->bg = 8;
1663:
1.111 nicm 1664: if (scroll_only)
1665: return;
1.109 nicm 1666:
1667: cx = s->cx; cy = s->cy;
1668: for (y = 0; y < screen_size_y(s); y++) {
1.172 nicm 1669: cl = &ctx->s->write_list[y];
1.193 nicm 1670: last = UINT_MAX;
1.172 nicm 1671: TAILQ_FOREACH_SAFE(ci, &cl->items, entry, tmp) {
1.193 nicm 1672: if (last != UINT_MAX && ci->x <= last) {
1673: fatalx("collect list not in order: %u <= %u",
1674: ci->x, last);
1675: }
1.144 nicm 1676: screen_write_set_cursor(ctx, ci->x, y);
1.193 nicm 1677: if (ci->type == CLEAR) {
1.167 nicm 1678: screen_write_initctx(ctx, &ttyctx, 1);
1.165 nicm 1679: ttyctx.bg = ci->bg;
1.193 nicm 1680: ttyctx.num = ci->used;
1681: tty_write(tty_cmd_clearcharacter, &ttyctx);
1.165 nicm 1682: } else {
1.167 nicm 1683: screen_write_initctx(ctx, &ttyctx, 0);
1.165 nicm 1684: ttyctx.cell = &ci->gc;
1685: ttyctx.wrapped = ci->wrapped;
1.172 nicm 1686: ttyctx.ptr = cl->data + ci->x;
1.165 nicm 1687: ttyctx.num = ci->used;
1688: tty_write(tty_cmd_cells, &ttyctx);
1689: }
1.116 nicm 1690: items++;
1.109 nicm 1691:
1.172 nicm 1692: TAILQ_REMOVE(&cl->items, ci, entry);
1.193 nicm 1693: screen_write_free_citem(ci);
1694: last = ci->x;
1.109 nicm 1695: }
1696: }
1697: s->cx = cx; s->cy = cy;
1.116 nicm 1698:
1.193 nicm 1699: log_debug("%s: flushed %u items (%s)", __func__, items, from);
1.109 nicm 1700: }
1701:
1702: /* Finish and store collected cells. */
1703: void
1704: screen_write_collect_end(struct screen_write_ctx *ctx)
1705: {
1.193 nicm 1706: struct screen *s = ctx->s;
1707: struct screen_write_citem *ci = ctx->item, *before;
1708: struct screen_write_cline *cl = &s->write_list[s->cy];
1709: struct grid_cell gc;
1710: u_int xx;
1711: int wrapped = ci->wrapped;
1.109 nicm 1712:
1713: if (ci->used == 0)
1714: return;
1715:
1.193 nicm 1716: before = screen_write_collect_trim(ctx, s->cy, s->cx, ci->used,
1717: &wrapped);
1.109 nicm 1718: ci->x = s->cx;
1.193 nicm 1719: ci->wrapped = wrapped;
1720: if (before == NULL)
1721: TAILQ_INSERT_TAIL(&cl->items, ci, entry);
1722: else
1723: TAILQ_INSERT_BEFORE(before, ci, entry);
1724: ctx->item = screen_write_get_citem();
1.109 nicm 1725:
1.170 nicm 1726: log_debug("%s: %u %.*s (at %u,%u)", __func__, ci->used,
1.172 nicm 1727: (int)ci->used, cl->data + ci->x, s->cx, s->cy);
1.109 nicm 1728:
1.131 nicm 1729: if (s->cx != 0) {
1730: for (xx = s->cx; xx > 0; xx--) {
1731: grid_view_get_cell(s->grid, xx, s->cy, &gc);
1732: if (~gc.flags & GRID_FLAG_PADDING)
1733: break;
1.136 nicm 1734: grid_view_set_cell(s->grid, xx, s->cy,
1735: &grid_default_cell);
1.131 nicm 1736: }
1.139 nicm 1737: if (gc.data.width > 1) {
1.136 nicm 1738: grid_view_set_cell(s->grid, xx, s->cy,
1739: &grid_default_cell);
1.139 nicm 1740: }
1.131 nicm 1741: }
1742:
1.172 nicm 1743: grid_view_set_cells(s->grid, s->cx, s->cy, &ci->gc, cl->data + ci->x,
1744: ci->used);
1.139 nicm 1745: screen_write_set_cursor(ctx, s->cx + ci->used, -1);
1.131 nicm 1746:
1747: for (xx = s->cx; xx < screen_size_x(s); xx++) {
1748: grid_view_get_cell(s->grid, xx, s->cy, &gc);
1749: if (~gc.flags & GRID_FLAG_PADDING)
1750: break;
1751: grid_view_set_cell(s->grid, xx, s->cy, &grid_default_cell);
1752: }
1.109 nicm 1753: }
1754:
1755: /* Write cell data, collecting if necessary. */
1756: void
1757: screen_write_collect_add(struct screen_write_ctx *ctx,
1758: const struct grid_cell *gc)
1759: {
1.193 nicm 1760: struct screen *s = ctx->s;
1761: struct screen_write_citem *ci;
1762: u_int sx = screen_size_x(s);
1763: int collect;
1.109 nicm 1764:
1765: /*
1766: * Don't need to check that the attributes and whatnot are still the
1.116 nicm 1767: * same - input_parse will end the collection when anything that isn't
1.159 nicm 1768: * a plain character is encountered.
1.109 nicm 1769: */
1770:
1771: collect = 1;
1.136 nicm 1772: if (gc->data.width != 1 || gc->data.size != 1 || *gc->data.data >= 0x7f)
1.109 nicm 1773: collect = 0;
1774: else if (gc->attr & GRID_ATTR_CHARSET)
1775: collect = 0;
1776: else if (~s->mode & MODE_WRAP)
1777: collect = 0;
1778: else if (s->mode & MODE_INSERT)
1779: collect = 0;
1.138 nicm 1780: else if (s->sel != NULL)
1.109 nicm 1781: collect = 0;
1782: if (!collect) {
1783: screen_write_collect_end(ctx);
1.164 nicm 1784: screen_write_collect_flush(ctx, 0, __func__);
1.109 nicm 1785: screen_write_cell(ctx, gc);
1786: return;
1787: }
1788:
1789: if (s->cx > sx - 1 || ctx->item->used > sx - 1 - s->cx)
1790: screen_write_collect_end(ctx);
1.118 nicm 1791: ci = ctx->item; /* may have changed */
1792:
1.109 nicm 1793: if (s->cx > sx - 1) {
1.114 nicm 1794: log_debug("%s: wrapped at %u,%u", __func__, s->cx, s->cy);
1.118 nicm 1795: ci->wrapped = 1;
1.122 nicm 1796: screen_write_linefeed(ctx, 1, 8);
1.139 nicm 1797: screen_write_set_cursor(ctx, 0, -1);
1.109 nicm 1798: }
1799:
1800: if (ci->used == 0)
1801: memcpy(&ci->gc, gc, sizeof ci->gc);
1.172 nicm 1802: if (ctx->s->write_list[s->cy].data == NULL)
1803: ctx->s->write_list[s->cy].data = xmalloc(screen_size_x(ctx->s));
1804: ctx->s->write_list[s->cy].data[s->cx + ci->used++] = gc->data.data[0];
1.109 nicm 1805: }
1806:
1.1 nicm 1807: /* Write cell data. */
1808: void
1.60 nicm 1809: screen_write_cell(struct screen_write_ctx *ctx, const struct grid_cell *gc)
1.1 nicm 1810: {
1811: struct screen *s = ctx->s;
1812: struct grid *gd = s->grid;
1.196 nicm 1813: const struct utf8_data *ud = &gc->data;
1814: const struct utf8_data zwj = { "\342\200\215", 0, 3, 0 };
1.109 nicm 1815: struct grid_line *gl;
1816: struct grid_cell_entry *gce;
1817: struct grid_cell tmp_gc, now_gc;
1.15 nicm 1818: struct tty_ctx ttyctx;
1.92 nicm 1819: u_int sx = screen_size_x(s), sy = screen_size_y(s);
1.115 nicm 1820: u_int width = gc->data.width, xx, last, cx, cy;
1.109 nicm 1821: int selected, skip = 1;
1.1 nicm 1822:
1.109 nicm 1823: /* Ignore padding cells. */
1.1 nicm 1824: if (gc->flags & GRID_FLAG_PADDING)
1825: return;
1.32 nicm 1826:
1.196 nicm 1827: /*
1828: * If this is a zero width joiner, set the flag so the next character
1829: * will be treated as zero width and appended. Note that we assume a
1830: * ZWJ will not change the width - the width of the first character is
1831: * used.
1832: */
1833: if (ud->size == 3 && memcmp(ud->data, "\342\200\215", 3) == 0) {
1834: log_debug("zero width joiner at %u,%u", s->cx, s->cy);
1835: ctx->flags |= SCREEN_WRITE_ZWJ;
1836: return;
1837: }
1838:
1839: /*
1840: * If the width is zero, combine onto the previous character. We always
1841: * combine with the cell to the left of the cursor position. In theory,
1842: * the application could have moved the cursor somewhere else, but if
1843: * they are silly enough to do that, who cares?
1844: */
1845: if (ctx->flags & SCREEN_WRITE_ZWJ) {
1846: screen_write_collect_flush(ctx, 0, __func__);
1847: screen_write_combine(ctx, &zwj, &xx);
1848: }
1849: if (width == 0 || (ctx->flags & SCREEN_WRITE_ZWJ)) {
1850: ctx->flags &= ~SCREEN_WRITE_ZWJ;
1.164 nicm 1851: screen_write_collect_flush(ctx, 0, __func__);
1.198 nicm 1852: if ((gc = screen_write_combine(ctx, ud, &xx)) != NULL) {
1.115 nicm 1853: cx = s->cx; cy = s->cy;
1.144 nicm 1854: screen_write_set_cursor(ctx, xx, s->cy);
1.163 nicm 1855: screen_write_initctx(ctx, &ttyctx, 0);
1.104 nicm 1856: ttyctx.cell = gc;
1857: tty_write(tty_cmd_cell, &ttyctx);
1.198 nicm 1858: s->cx = cx; s->cy = cy;
1.1 nicm 1859: }
1860: return;
1861: }
1.112 nicm 1862:
1863: /* Flush any existing scrolling. */
1.164 nicm 1864: screen_write_collect_flush(ctx, 1, __func__);
1.1 nicm 1865:
1.109 nicm 1866: /* If this character doesn't fit, ignore it. */
1867: if ((~s->mode & MODE_WRAP) &&
1868: width > 1 &&
1869: (width > sx || (s->cx != sx && s->cx > sx - width)))
1870: return;
1871:
1.6 nicm 1872: /* If in insert mode, make space for the cells. */
1.98 nicm 1873: if (s->mode & MODE_INSERT) {
1.109 nicm 1874: grid_view_insert_cells(s->grid, s->cx, s->cy, width, 8);
1875: skip = 0;
1876: }
1.6 nicm 1877:
1.20 nicm 1878: /* Check this will fit on the current line and wrap if not. */
1.92 nicm 1879: if ((s->mode & MODE_WRAP) && s->cx > sx - width) {
1.128 nicm 1880: log_debug("%s: wrapped at %u,%u", __func__, s->cx, s->cy);
1.122 nicm 1881: screen_write_linefeed(ctx, 1, 8);
1.139 nicm 1882: screen_write_set_cursor(ctx, 0, -1);
1.164 nicm 1883: screen_write_collect_flush(ctx, 1, __func__);
1.1 nicm 1884: }
1885:
1.64 nicm 1886: /* Sanity check cursor position. */
1.92 nicm 1887: if (s->cx > sx - width || s->cy > sy - 1)
1.1 nicm 1888: return;
1.163 nicm 1889: screen_write_initctx(ctx, &ttyctx, 0);
1.106 nicm 1890:
1.1 nicm 1891: /* Handle overwriting of UTF-8 characters. */
1.137 nicm 1892: gl = grid_get_line(s->grid, s->grid->hsize + s->cy);
1.92 nicm 1893: if (gl->flags & GRID_LINE_EXTENDED) {
1894: grid_view_get_cell(gd, s->cx, s->cy, &now_gc);
1895: if (screen_write_overwrite(ctx, &now_gc, width))
1896: skip = 0;
1897: }
1.1 nicm 1898:
1899: /*
1900: * If the new character is UTF-8 wide, fill in padding cells. Have
1901: * already ensured there is enough room.
1902: */
1.89 nicm 1903: for (xx = s->cx + 1; xx < s->cx + width; xx++) {
1.131 nicm 1904: log_debug("%s: new padding at %u,%u", __func__, xx, s->cy);
1.184 nicm 1905: grid_view_set_padding(gd, xx, s->cy);
1.89 nicm 1906: skip = 0;
1907: }
1908:
1909: /* If no change, do not draw. */
1.92 nicm 1910: if (skip) {
1911: if (s->cx >= gl->cellsize)
1912: skip = grid_cells_equal(gc, &grid_default_cell);
1913: else {
1914: gce = &gl->celldata[s->cx];
1915: if (gce->flags & GRID_FLAG_EXTENDED)
1916: skip = 0;
1.95 nicm 1917: else if (gc->flags != gce->flags)
1.92 nicm 1918: skip = 0;
1919: else if (gc->attr != gce->data.attr)
1920: skip = 0;
1921: else if (gc->fg != gce->data.fg)
1922: skip = 0;
1923: else if (gc->bg != gce->data.bg)
1924: skip = 0;
1.95 nicm 1925: else if (gc->data.width != 1)
1926: skip = 0;
1.109 nicm 1927: else if (gc->data.size != 1)
1928: skip = 0;
1.95 nicm 1929: else if (gce->data.data != gc->data.data[0])
1.92 nicm 1930: skip = 0;
1931: }
1932: }
1.1 nicm 1933:
1.127 nicm 1934: /* Update the selected flag and set the cell. */
1.90 nicm 1935: selected = screen_check_selection(s, s->cx, s->cy);
1.109 nicm 1936: if (selected && (~gc->flags & GRID_FLAG_SELECTED)) {
1.90 nicm 1937: memcpy(&tmp_gc, gc, sizeof tmp_gc);
1938: tmp_gc.flags |= GRID_FLAG_SELECTED;
1939: grid_view_set_cell(gd, s->cx, s->cy, &tmp_gc);
1.109 nicm 1940: } else if (!selected && (gc->flags & GRID_FLAG_SELECTED)) {
1.90 nicm 1941: memcpy(&tmp_gc, gc, sizeof tmp_gc);
1942: tmp_gc.flags &= ~GRID_FLAG_SELECTED;
1943: grid_view_set_cell(gd, s->cx, s->cy, &tmp_gc);
1944: } else if (!skip)
1.89 nicm 1945: grid_view_set_cell(gd, s->cx, s->cy, gc);
1.109 nicm 1946: if (selected)
1947: skip = 0;
1.1 nicm 1948:
1.64 nicm 1949: /*
1950: * Move the cursor. If not wrapping, stick at the last character and
1951: * replace it.
1952: */
1.65 nicm 1953: last = !(s->mode & MODE_WRAP);
1.92 nicm 1954: if (s->cx <= sx - last - width)
1.139 nicm 1955: screen_write_set_cursor(ctx, s->cx + width, -1);
1.64 nicm 1956: else
1.139 nicm 1957: screen_write_set_cursor(ctx, sx - last, -1);
1.1 nicm 1958:
1.89 nicm 1959: /* Create space for character in insert mode. */
1.109 nicm 1960: if (s->mode & MODE_INSERT) {
1.164 nicm 1961: screen_write_collect_flush(ctx, 0, __func__);
1.17 nicm 1962: ttyctx.num = width;
1963: tty_write(tty_cmd_insertcharacter, &ttyctx);
1964: }
1.89 nicm 1965:
1966: /* Write to the screen. */
1.109 nicm 1967: if (!skip) {
1968: if (selected) {
1969: screen_select_cell(s, &tmp_gc, gc);
1970: ttyctx.cell = &tmp_gc;
1971: } else
1972: ttyctx.cell = gc;
1.16 nicm 1973: tty_write(tty_cmd_cell, &ttyctx);
1.193 nicm 1974: }
1.35 nicm 1975: }
1976:
1977: /* Combine a UTF-8 zero-width character onto the previous. */
1.104 nicm 1978: static const struct grid_cell *
1979: screen_write_combine(struct screen_write_ctx *ctx, const struct utf8_data *ud,
1980: u_int *xx)
1.35 nicm 1981: {
1982: struct screen *s = ctx->s;
1983: struct grid *gd = s->grid;
1.104 nicm 1984: static struct grid_cell gc;
1985: u_int n;
1.35 nicm 1986:
1987: /* Can't combine if at 0. */
1988: if (s->cx == 0)
1.104 nicm 1989: return (NULL);
1.35 nicm 1990:
1.60 nicm 1991: /* Empty data is out. */
1992: if (ud->size == 0)
1.37 nicm 1993: fatalx("UTF-8 data empty");
1994:
1.60 nicm 1995: /* Retrieve the previous cell. */
1.119 nicm 1996: for (n = 1; n <= s->cx; n++) {
1.104 nicm 1997: grid_view_get_cell(gd, s->cx - n, s->cy, &gc);
1998: if (~gc.flags & GRID_FLAG_PADDING)
1999: break;
2000: }
1.119 nicm 2001: if (n > s->cx)
1.104 nicm 2002: return (NULL);
2003: *xx = s->cx - n;
1.35 nicm 2004:
1.60 nicm 2005: /* Check there is enough space. */
1.77 nicm 2006: if (gc.data.size + ud->size > sizeof gc.data.data)
1.104 nicm 2007: return (NULL);
2008:
2009: log_debug("%s: %.*s onto %.*s at %u,%u", __func__, (int)ud->size,
2010: ud->data, (int)gc.data.size, gc.data.data, *xx, s->cy);
1.35 nicm 2011:
1.77 nicm 2012: /* Append the data. */
2013: memcpy(gc.data.data + gc.data.size, ud->data, ud->size);
2014: gc.data.size += ud->size;
2015:
2016: /* Set the new cell. */
1.104 nicm 2017: grid_view_set_cell(gd, *xx, s->cy, &gc);
1.35 nicm 2018:
1.104 nicm 2019: return (&gc);
1.1 nicm 2020: }
2021:
2022: /*
2023: * UTF-8 wide characters are a bit of an annoyance. They take up more than one
2024: * cell on the screen, so following cells must not be drawn by marking them as
2025: * padding.
2026: *
2027: * So far, so good. The problem is, when overwriting a padding cell, or a UTF-8
2028: * character, it is necessary to also overwrite any other cells which covered
2029: * by the same character.
2030: */
1.89 nicm 2031: static int
2032: screen_write_overwrite(struct screen_write_ctx *ctx, struct grid_cell *gc,
2033: u_int width)
1.1 nicm 2034: {
2035: struct screen *s = ctx->s;
2036: struct grid *gd = s->grid;
1.89 nicm 2037: struct grid_cell tmp_gc;
1.1 nicm 2038: u_int xx;
1.89 nicm 2039: int done = 0;
1.1 nicm 2040:
1.89 nicm 2041: if (gc->flags & GRID_FLAG_PADDING) {
1.1 nicm 2042: /*
2043: * A padding cell, so clear any following and leading padding
2044: * cells back to the character. Don't overwrite the current
2045: * cell as that happens later anyway.
2046: */
2047: xx = s->cx + 1;
2048: while (--xx > 0) {
1.89 nicm 2049: grid_view_get_cell(gd, xx, s->cy, &tmp_gc);
2050: if (~tmp_gc.flags & GRID_FLAG_PADDING)
1.1 nicm 2051: break;
1.131 nicm 2052: log_debug("%s: padding at %u,%u", __func__, xx, s->cy);
1.1 nicm 2053: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
2054: }
2055:
2056: /* Overwrite the character at the start of this padding. */
1.131 nicm 2057: log_debug("%s: character at %u,%u", __func__, xx, s->cy);
1.1 nicm 2058: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
1.89 nicm 2059: done = 1;
1.43 nicm 2060: }
1.1 nicm 2061:
1.43 nicm 2062: /*
1.95 nicm 2063: * Overwrite any padding cells that belong to any UTF-8 characters
2064: * we'll be overwriting with the current character.
1.43 nicm 2065: */
1.95 nicm 2066: if (width != 1 ||
2067: gc->data.width != 1 ||
2068: gc->flags & GRID_FLAG_PADDING) {
1.89 nicm 2069: xx = s->cx + width - 1;
2070: while (++xx < screen_size_x(s)) {
2071: grid_view_get_cell(gd, xx, s->cy, &tmp_gc);
2072: if (~tmp_gc.flags & GRID_FLAG_PADDING)
2073: break;
1.160 nicm 2074: log_debug("%s: overwrite at %u,%u", __func__, xx,
2075: s->cy);
1.89 nicm 2076: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
2077: done = 1;
2078: }
1.1 nicm 2079: }
1.89 nicm 2080:
2081: return (done);
1.50 nicm 2082: }
2083:
1.107 nicm 2084: /* Set external clipboard. */
1.50 nicm 2085: void
2086: screen_write_setselection(struct screen_write_ctx *ctx, u_char *str, u_int len)
2087: {
2088: struct tty_ctx ttyctx;
2089:
1.163 nicm 2090: screen_write_initctx(ctx, &ttyctx, 0);
1.50 nicm 2091: ttyctx.ptr = str;
2092: ttyctx.num = len;
2093:
2094: tty_write(tty_cmd_setselection, &ttyctx);
1.47 nicm 2095: }
2096:
1.107 nicm 2097: /* Write unmodified string. */
1.47 nicm 2098: void
2099: screen_write_rawstring(struct screen_write_ctx *ctx, u_char *str, u_int len)
2100: {
1.87 nicm 2101: struct tty_ctx ttyctx;
1.47 nicm 2102:
1.163 nicm 2103: screen_write_initctx(ctx, &ttyctx, 0);
1.47 nicm 2104: ttyctx.ptr = str;
2105: ttyctx.num = len;
2106:
2107: tty_write(tty_cmd_rawstring, &ttyctx);
1.178 nicm 2108: }
2109:
2110: /* Turn alternate screen on. */
2111: void
2112: screen_write_alternateon(struct screen_write_ctx *ctx, struct grid_cell *gc,
2113: int cursor)
2114: {
2115: struct tty_ctx ttyctx;
2116: struct window_pane *wp = ctx->wp;
2117:
2118: if (wp != NULL && !options_get_number(wp->options, "alternate-screen"))
2119: return;
1.192 nicm 2120:
2121: screen_write_collect_flush(ctx, 0, __func__);
1.178 nicm 2122: screen_alternate_on(ctx->s, gc, cursor);
2123:
2124: screen_write_initctx(ctx, &ttyctx, 1);
2125: ttyctx.redraw_cb(&ttyctx);
2126: }
2127:
2128: /* Turn alternate screen off. */
2129: void
2130: screen_write_alternateoff(struct screen_write_ctx *ctx, struct grid_cell *gc,
2131: int cursor)
2132: {
2133: struct tty_ctx ttyctx;
2134: struct window_pane *wp = ctx->wp;
2135:
2136: if (wp != NULL && !options_get_number(wp->options, "alternate-screen"))
2137: return;
1.192 nicm 2138:
2139: screen_write_collect_flush(ctx, 0, __func__);
1.178 nicm 2140: screen_alternate_off(ctx->s, gc, cursor);
2141:
2142: screen_write_initctx(ctx, &ttyctx, 1);
2143: ttyctx.redraw_cb(&ttyctx);
1.1 nicm 2144: }
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