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Merge branch 'obsd-master'
[tmux.git] / screen-redraw.c
blobce83bdff9f09ab058a049a2fde4f4f443903eca0
1 /* $OpenBSD$ */
2
3 /*
4 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
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
21 #include <stdlib.h>
22 #include <string.h>
23
24 #include "tmux.h"
25
26 static void screen_redraw_draw_borders(struct screen_redraw_ctx *);
27 static void screen_redraw_draw_panes(struct screen_redraw_ctx *);
28 static void screen_redraw_draw_status(struct screen_redraw_ctx *);
29 static void screen_redraw_draw_pane(struct screen_redraw_ctx *,
30 struct window_pane *);
31 static void screen_redraw_set_context(struct client *,
32 struct screen_redraw_ctx *);
33
34 #define START_ISOLATE "\342\201\246"
35 #define END_ISOLATE "\342\201\251"
36
37 /* Border in relation to a pane. */
38 enum screen_redraw_border_type {
39 SCREEN_REDRAW_OUTSIDE,
40 SCREEN_REDRAW_INSIDE,
41 SCREEN_REDRAW_BORDER_LEFT,
42 SCREEN_REDRAW_BORDER_RIGHT,
43 SCREEN_REDRAW_BORDER_TOP,
44 SCREEN_REDRAW_BORDER_BOTTOM
45 };
46 #define BORDER_MARKERS " +,.-"
47
48 /* Get cell border character. */
49 static void
50 screen_redraw_border_set(struct window *w, struct window_pane *wp,
51 enum pane_lines pane_lines, int cell_type, struct grid_cell *gc)
52 {
53 u_int idx;
54
55 if (cell_type == CELL_OUTSIDE && w->fill_character != NULL) {
56 utf8_copy(&gc->data, &w->fill_character[0]);
57 return;
58 }
59
60 switch (pane_lines) {
61 case PANE_LINES_NUMBER:
62 if (cell_type == CELL_OUTSIDE) {
63 gc->attr |= GRID_ATTR_CHARSET;
64 utf8_set(&gc->data, CELL_BORDERS[CELL_OUTSIDE]);
65 break;
66 }
67 gc->attr &= ~GRID_ATTR_CHARSET;
68 if (wp != NULL && window_pane_index(wp, &idx) == 0)
69 utf8_set(&gc->data, '0' + (idx % 10));
70 else
71 utf8_set(&gc->data, '*');
72 break;
73 case PANE_LINES_DOUBLE:
74 gc->attr &= ~GRID_ATTR_CHARSET;
75 utf8_copy(&gc->data, tty_acs_double_borders(cell_type));
76 break;
77 case PANE_LINES_HEAVY:
78 gc->attr &= ~GRID_ATTR_CHARSET;
79 utf8_copy(&gc->data, tty_acs_heavy_borders(cell_type));
80 break;
81 case PANE_LINES_SIMPLE:
82 gc->attr &= ~GRID_ATTR_CHARSET;
83 utf8_set(&gc->data, SIMPLE_BORDERS[cell_type]);
84 break;
85 default:
86 gc->attr |= GRID_ATTR_CHARSET;
87 utf8_set(&gc->data, CELL_BORDERS[cell_type]);
88 break;
89 }
90 }
91
92 /* Return if window has only two panes. */
93 static int
94 screen_redraw_two_panes(struct window *w, int direction)
95 {
96 struct window_pane *wp;
97
98 wp = TAILQ_NEXT(TAILQ_FIRST(&w->panes), entry);
99 if (wp == NULL)
100 return (0); /* one pane */
101 if (TAILQ_NEXT(wp, entry) != NULL)
102 return (0); /* more than two panes */
103 if (direction == 0 && wp->xoff == 0)
104 return (0);
105 if (direction == 1 && wp->yoff == 0)
106 return (0);
107 return (1);
108 }
109
110 /* Check if cell is on the border of a pane. */
111 static enum screen_redraw_border_type
112 screen_redraw_pane_border(struct screen_redraw_ctx *ctx, struct window_pane *wp,
113 u_int px, u_int py)
114 {
115 struct options *oo = wp->window->options;
116 int split = 0;
117 u_int ex = wp->xoff + wp->sx, ey = wp->yoff + wp->sy;
118 int pane_status = ctx->pane_status;
119
120 /* Inside pane. */
121 if (px >= wp->xoff && px < ex && py >= wp->yoff && py < ey)
122 return (SCREEN_REDRAW_INSIDE);
123
124 /* Get pane indicator. */
125 switch (options_get_number(oo, "pane-border-indicators")) {
126 case PANE_BORDER_COLOUR:
127 case PANE_BORDER_BOTH:
128 split = 1;
129 break;
130 }
131
132 /* Left/right borders. */
133 if (pane_status == PANE_STATUS_OFF) {
134 if (screen_redraw_two_panes(wp->window, 0) && split) {
135 if (wp->xoff == 0 && px == wp->sx && py <= wp->sy / 2)
136 return (SCREEN_REDRAW_BORDER_RIGHT);
137 if (wp->xoff != 0 &&
138 px == wp->xoff - 1 &&
139 py > wp->sy / 2)
140 return (SCREEN_REDRAW_BORDER_LEFT);
141 } else {
142 if ((wp->yoff == 0 || py >= wp->yoff - 1) && py <= ey) {
143 if (wp->xoff != 0 && px == wp->xoff - 1)
144 return (SCREEN_REDRAW_BORDER_LEFT);
145 if (px == ex)
146 return (SCREEN_REDRAW_BORDER_RIGHT);
147 }
148 }
149 } else {
150 if ((wp->yoff == 0 || py >= wp->yoff - 1) && py <= ey) {
151 if (wp->xoff != 0 && px == wp->xoff - 1)
152 return (SCREEN_REDRAW_BORDER_LEFT);
153 if (px == ex)
154 return (SCREEN_REDRAW_BORDER_RIGHT);
155 }
156 }
157
158 /* Top/bottom borders. */
159 if (pane_status == PANE_STATUS_OFF) {
160 if (screen_redraw_two_panes(wp->window, 1) && split) {
161 if (wp->yoff == 0 && py == wp->sy && px <= wp->sx / 2)
162 return (SCREEN_REDRAW_BORDER_BOTTOM);
163 if (wp->yoff != 0 &&
164 py == wp->yoff - 1 &&
165 px > wp->sx / 2)
166 return (SCREEN_REDRAW_BORDER_TOP);
167 } else {
168 if ((wp->xoff == 0 || px >= wp->xoff - 1) && px <= ex) {
169 if (wp->yoff != 0 && py == wp->yoff - 1)
170 return (SCREEN_REDRAW_BORDER_TOP);
171 if (py == ey)
172 return (SCREEN_REDRAW_BORDER_BOTTOM);
173 }
174 }
175 } else if (pane_status == PANE_STATUS_TOP) {
176 if ((wp->xoff == 0 || px >= wp->xoff - 1) && px <= ex) {
177 if (wp->yoff != 0 && py == wp->yoff - 1)
178 return (SCREEN_REDRAW_BORDER_TOP);
179 }
180 } else {
181 if ((wp->xoff == 0 || px >= wp->xoff - 1) && px <= ex) {
182 if (py == ey)
183 return (SCREEN_REDRAW_BORDER_BOTTOM);
184 }
185 }
186
187 /* Outside pane. */
188 return (SCREEN_REDRAW_OUTSIDE);
189 }
190
191 /* Check if a cell is on a border. */
192 static int
193 screen_redraw_cell_border(struct screen_redraw_ctx *ctx, u_int px, u_int py)
194 {
195 struct client *c = ctx->c;
196 struct window *w = c->session->curw->window;
197 struct window_pane *wp;
198
199 /* Outside the window? */
200 if (px > w->sx || py > w->sy)
201 return (0);
202
203 /* On the window border? */
204 if (px == w->sx || py == w->sy)
205 return (1);
206
207 /* Check all the panes. */
208 TAILQ_FOREACH(wp, &w->panes, entry) {
209 if (!window_pane_visible(wp))
210 continue;
211 switch (screen_redraw_pane_border(ctx, wp, px, py)) {
212 case SCREEN_REDRAW_INSIDE:
213 return (0);
214 case SCREEN_REDRAW_OUTSIDE:
215 break;
216 default:
217 return (1);
218 }
219 }
220
221 return (0);
222 }
223
224 /* Work out type of border cell from surrounding cells. */
225 static int
226 screen_redraw_type_of_cell(struct screen_redraw_ctx *ctx, u_int px, u_int py)
227 {
228 struct client *c = ctx->c;
229 int pane_status = ctx->pane_status;
230 struct window *w = c->session->curw->window;
231 u_int sx = w->sx, sy = w->sy;
232 int borders = 0;
233
234 /* Is this outside the window? */
235 if (px > sx || py > sy)
236 return (CELL_OUTSIDE);
237
238 /*
239 * Construct a bitmask of whether the cells to the left (bit 4), right,
240 * top, and bottom (bit 1) of this cell are borders.
241 */
242 if (px == 0 || screen_redraw_cell_border(ctx, px - 1, py))
243 borders |= 8;
244 if (px <= sx && screen_redraw_cell_border(ctx, px + 1, py))
245 borders |= 4;
246 if (pane_status == PANE_STATUS_TOP) {
247 if (py != 0 &&
248 screen_redraw_cell_border(ctx, px, py - 1))
249 borders |= 2;
250 if (screen_redraw_cell_border(ctx, px, py + 1))
251 borders |= 1;
252 } else if (pane_status == PANE_STATUS_BOTTOM) {
253 if (py == 0 ||
254 screen_redraw_cell_border(ctx, px, py - 1))
255 borders |= 2;
256 if (py != sy - 1 &&
257 screen_redraw_cell_border(ctx, px, py + 1))
258 borders |= 1;
259 } else {
260 if (py == 0 ||
261 screen_redraw_cell_border(ctx, px, py - 1))
262 borders |= 2;
263 if (screen_redraw_cell_border(ctx, px, py + 1))
264 borders |= 1;
265 }
266
267 /*
268 * Figure out what kind of border this cell is. Only one bit set
269 * doesn't make sense (can't have a border cell with no others
270 * connected).
271 */
272 switch (borders) {
273 case 15: /* 1111, left right top bottom */
274 return (CELL_JOIN);
275 case 14: /* 1110, left right top */
276 return (CELL_BOTTOMJOIN);
277 case 13: /* 1101, left right bottom */
278 return (CELL_TOPJOIN);
279 case 12: /* 1100, left right */
280 return (CELL_LEFTRIGHT);
281 case 11: /* 1011, left top bottom */
282 return (CELL_RIGHTJOIN);
283 case 10: /* 1010, left top */
284 return (CELL_BOTTOMRIGHT);
285 case 9: /* 1001, left bottom */
286 return (CELL_TOPRIGHT);
287 case 7: /* 0111, right top bottom */
288 return (CELL_LEFTJOIN);
289 case 6: /* 0110, right top */
290 return (CELL_BOTTOMLEFT);
291 case 5: /* 0101, right bottom */
292 return (CELL_TOPLEFT);
293 case 3: /* 0011, top bottom */
294 return (CELL_TOPBOTTOM);
295 }
296 return (CELL_OUTSIDE);
297 }
298
299 /* Check if cell inside a pane. */
300 static int
301 screen_redraw_check_cell(struct screen_redraw_ctx *ctx, u_int px, u_int py,
302 struct window_pane **wpp)
303 {
304 struct client *c = ctx->c;
305 struct window *w = c->session->curw->window;
306 struct window_pane *wp, *active;
307 int pane_status = ctx->pane_status;
308 int border;
309 u_int right, line;
310
311 *wpp = NULL;
312
313 if (px > w->sx || py > w->sy)
314 return (CELL_OUTSIDE);
315 if (px == w->sx || py == w->sy) /* window border */
316 return (screen_redraw_type_of_cell(ctx, px, py));
317
318 if (pane_status != PANE_STATUS_OFF) {
319 active = wp = server_client_get_pane(c);
320 do {
321 if (!window_pane_visible(wp))
322 goto next1;
323
324 if (pane_status == PANE_STATUS_TOP)
325 line = wp->yoff - 1;
326 else
327 line = wp->yoff + wp->sy;
328 right = wp->xoff + 2 + wp->status_size - 1;
329
330 if (py == line && px >= wp->xoff + 2 && px <= right)
331 return (CELL_INSIDE);
332
333 next1:
334 wp = TAILQ_NEXT(wp, entry);
335 if (wp == NULL)
336 wp = TAILQ_FIRST(&w->panes);
337 } while (wp != active);
338 }
339
340 active = wp = server_client_get_pane(c);
341 do {
342 if (!window_pane_visible(wp))
343 goto next2;
344 *wpp = wp;
345
346 /*
347 * If definitely inside, return. If not on border, skip.
348 * Otherwise work out the cell.
349 */
350 border = screen_redraw_pane_border(ctx, wp, px, py);
351 if (border == SCREEN_REDRAW_INSIDE)
352 return (CELL_INSIDE);
353 if (border == SCREEN_REDRAW_OUTSIDE)
354 goto next2;
355 return (screen_redraw_type_of_cell(ctx, px, py));
356
357 next2:
358 wp = TAILQ_NEXT(wp, entry);
359 if (wp == NULL)
360 wp = TAILQ_FIRST(&w->panes);
361 } while (wp != active);
362
363 return (CELL_OUTSIDE);
364 }
365
366 /* Check if the border of a particular pane. */
367 static int
368 screen_redraw_check_is(struct screen_redraw_ctx *ctx, u_int px, u_int py,
369 struct window_pane *wp)
370 {
371 enum screen_redraw_border_type border;
372
373 border = screen_redraw_pane_border(ctx, wp, px, py);
374 if (border != SCREEN_REDRAW_INSIDE && border != SCREEN_REDRAW_OUTSIDE)
375 return (1);
376 return (0);
377 }
378
379 /* Update pane status. */
380 static int
381 screen_redraw_make_pane_status(struct client *c, struct window_pane *wp,
382 struct screen_redraw_ctx *rctx, enum pane_lines pane_lines)
383 {
384 struct window *w = wp->window;
385 struct grid_cell gc;
386 const char *fmt;
387 struct format_tree *ft;
388 char *expanded;
389 int pane_status = rctx->pane_status;
390 u_int width, i, cell_type, px, py;
391 struct screen_write_ctx ctx;
392 struct screen old;
393
394 ft = format_create(c, NULL, FORMAT_PANE|wp->id, FORMAT_STATUS);
395 format_defaults(ft, c, c->session, c->session->curw, wp);
396
397 if (wp == server_client_get_pane(c))
398 style_apply(&gc, w->options, "pane-active-border-style", ft);
399 else
400 style_apply(&gc, w->options, "pane-border-style", ft);
401 fmt = options_get_string(wp->options, "pane-border-format");
402
403 expanded = format_expand_time(ft, fmt);
404 if (wp->sx < 4)
405 wp->status_size = width = 0;
406 else
407 wp->status_size = width = wp->sx - 4;
408
409 memcpy(&old, &wp->status_screen, sizeof old);
410 screen_init(&wp->status_screen, width, 1, 0);
411 wp->status_screen.mode = 0;
412
413 screen_write_start(&ctx, &wp->status_screen);
414
415 for (i = 0; i < width; i++) {
416 px = wp->xoff + 2 + i;
417 if (pane_status == PANE_STATUS_TOP)
418 py = wp->yoff - 1;
419 else
420 py = wp->yoff + wp->sy;
421 cell_type = screen_redraw_type_of_cell(rctx, px, py);
422 screen_redraw_border_set(w, wp, pane_lines, cell_type, &gc);
423 screen_write_cell(&ctx, &gc);
424 }
425 gc.attr &= ~GRID_ATTR_CHARSET;
426
427 screen_write_cursormove(&ctx, 0, 0, 0);
428 format_draw(&ctx, &gc, width, expanded, NULL, 0);
429 screen_write_stop(&ctx);
430
431 free(expanded);
432 format_free(ft);
433
434 if (grid_compare(wp->status_screen.grid, old.grid) == 0) {
435 screen_free(&old);
436 return (0);
437 }
438 screen_free(&old);
439 return (1);
440 }
441
442 /* Draw pane status. */
443 static void
444 screen_redraw_draw_pane_status(struct screen_redraw_ctx *ctx)
445 {
446 struct client *c = ctx->c;
447 struct window *w = c->session->curw->window;
448 struct tty *tty = &c->tty;
449 struct window_pane *wp;
450 struct screen *s;
451 u_int i, x, width, xoff, yoff, size;
452
453 log_debug("%s: %s @%u", __func__, c->name, w->id);
454
455 TAILQ_FOREACH(wp, &w->panes, entry) {
456 if (!window_pane_visible(wp))
457 continue;
458 s = &wp->status_screen;
459
460 size = wp->status_size;
461 if (ctx->pane_status == PANE_STATUS_TOP)
462 yoff = wp->yoff - 1;
463 else
464 yoff = wp->yoff + wp->sy;
465 xoff = wp->xoff + 2;
466
467 if (xoff + size <= ctx->ox ||
468 xoff >= ctx->ox + ctx->sx ||
469 yoff < ctx->oy ||
470 yoff >= ctx->oy + ctx->sy)
471 continue;
472
473 if (xoff >= ctx->ox && xoff + size <= ctx->ox + ctx->sx) {
474 /* All visible. */
475 i = 0;
476 x = xoff - ctx->ox;
477 width = size;
478 } else if (xoff < ctx->ox && xoff + size > ctx->ox + ctx->sx) {
479 /* Both left and right not visible. */
480 i = ctx->ox;
481 x = 0;
482 width = ctx->sx;
483 } else if (xoff < ctx->ox) {
484 /* Left not visible. */
485 i = ctx->ox - xoff;
486 x = 0;
487 width = size - i;
488 } else {
489 /* Right not visible. */
490 i = 0;
491 x = xoff - ctx->ox;
492 width = size - x;
493 }
494
495 if (ctx->statustop)
496 yoff += ctx->statuslines;
497 tty_draw_line(tty, s, i, 0, width, x, yoff - ctx->oy,
498 &grid_default_cell, NULL);
499 }
500 tty_cursor(tty, 0, 0);
501 }
502
503 /* Update status line and change flags if unchanged. */
504 static uint64_t
505 screen_redraw_update(struct client *c, uint64_t flags)
506 {
507 struct window *w = c->session->curw->window;
508 struct window_pane *wp;
509 struct options *wo = w->options;
510 int redraw;
511 enum pane_lines lines;
512 struct screen_redraw_ctx ctx;
513
514 if (c->message_string != NULL)
515 redraw = status_message_redraw(c);
516 else if (c->prompt_string != NULL)
517 redraw = status_prompt_redraw(c);
518 else
519 redraw = status_redraw(c);
520 if (!redraw && (~flags & CLIENT_REDRAWSTATUSALWAYS))
521 flags &= ~CLIENT_REDRAWSTATUS;
522
523 if (c->overlay_draw != NULL)
524 flags |= CLIENT_REDRAWOVERLAY;
525
526 if (options_get_number(wo, "pane-border-status") != PANE_STATUS_OFF) {
527 screen_redraw_set_context(c, &ctx);
528 lines = options_get_number(wo, "pane-border-lines");
529 redraw = 0;
530 TAILQ_FOREACH(wp, &w->panes, entry) {
531 if (screen_redraw_make_pane_status(c, wp, &ctx, lines))
532 redraw = 1;
533 }
534 if (redraw)
535 flags |= CLIENT_REDRAWBORDERS;
536 }
537 return (flags);
538 }
539
540 /* Set up redraw context. */
541 static void
542 screen_redraw_set_context(struct client *c, struct screen_redraw_ctx *ctx)
543 {
544 struct session *s = c->session;
545 struct options *oo = s->options;
546 struct window *w = s->curw->window;
547 struct options *wo = w->options;
548 u_int lines;
549
550 memset(ctx, 0, sizeof *ctx);
551 ctx->c = c;
552
553 lines = status_line_size(c);
554 if (c->message_string != NULL || c->prompt_string != NULL)
555 lines = (lines == 0) ? 1 : lines;
556 if (lines != 0 && options_get_number(oo, "status-position") == 0)
557 ctx->statustop = 1;
558 ctx->statuslines = lines;
559
560 ctx->pane_status = options_get_number(wo, "pane-border-status");
561 ctx->pane_lines = options_get_number(wo, "pane-border-lines");
562
563 tty_window_offset(&c->tty, &ctx->ox, &ctx->oy, &ctx->sx, &ctx->sy);
564
565 log_debug("%s: %s @%u ox=%u oy=%u sx=%u sy=%u %u/%d", __func__, c->name,
566 w->id, ctx->ox, ctx->oy, ctx->sx, ctx->sy, ctx->statuslines,
567 ctx->statustop);
568 }
569
570 /* Redraw entire screen. */
571 void
572 screen_redraw_screen(struct client *c)
573 {
574 struct screen_redraw_ctx ctx;
575 uint64_t flags;
576
577 if (c->flags & CLIENT_SUSPENDED)
578 return;
579
580 flags = screen_redraw_update(c, c->flags);
581 if ((flags & CLIENT_ALLREDRAWFLAGS) == 0)
582 return;
583
584 screen_redraw_set_context(c, &ctx);
585 tty_sync_start(&c->tty);
586 tty_update_mode(&c->tty, c->tty.mode, NULL);
587
588 if (flags & (CLIENT_REDRAWWINDOW|CLIENT_REDRAWBORDERS)) {
589 log_debug("%s: redrawing borders", c->name);
590 if (ctx.pane_status != PANE_STATUS_OFF)
591 screen_redraw_draw_pane_status(&ctx);
592 screen_redraw_draw_borders(&ctx);
593 }
594 if (flags & CLIENT_REDRAWWINDOW) {
595 log_debug("%s: redrawing panes", c->name);
596 screen_redraw_draw_panes(&ctx);
597 }
598 if (ctx.statuslines != 0 &&
599 (flags & (CLIENT_REDRAWSTATUS|CLIENT_REDRAWSTATUSALWAYS))) {
600 log_debug("%s: redrawing status", c->name);
601 screen_redraw_draw_status(&ctx);
602 }
603 if (c->overlay_draw != NULL && (flags & CLIENT_REDRAWOVERLAY)) {
604 log_debug("%s: redrawing overlay", c->name);
605 c->overlay_draw(c, c->overlay_data, &ctx);
606 }
607
608 tty_reset(&c->tty);
609 }
610
611 /* Redraw a single pane. */
612 void
613 screen_redraw_pane(struct client *c, struct window_pane *wp)
614 {
615 struct screen_redraw_ctx ctx;
616
617 if (!window_pane_visible(wp))
618 return;
619
620 screen_redraw_set_context(c, &ctx);
621 tty_sync_start(&c->tty);
622 tty_update_mode(&c->tty, c->tty.mode, NULL);
623
624 screen_redraw_draw_pane(&ctx, wp);
625
626 tty_reset(&c->tty);
627 }
628
629 /* Get border cell style. */
630 static const struct grid_cell *
631 screen_redraw_draw_borders_style(struct screen_redraw_ctx *ctx, u_int x,
632 u_int y, struct window_pane *wp)
633 {
634 struct client *c = ctx->c;
635 struct session *s = c->session;
636 struct window *w = s->curw->window;
637 struct window_pane *active = server_client_get_pane(c);
638 struct options *oo = w->options;
639 struct format_tree *ft;
640
641 if (wp->border_gc_set)
642 return (&wp->border_gc);
643 wp->border_gc_set = 1;
644
645 ft = format_create_defaults(NULL, c, s, s->curw, wp);
646 if (screen_redraw_check_is(ctx, x, y, active))
647 style_apply(&wp->border_gc, oo, "pane-active-border-style", ft);
648 else
649 style_apply(&wp->border_gc, oo, "pane-border-style", ft);
650 format_free(ft);
651
652 return (&wp->border_gc);
653 }
654
655 /* Draw a border cell. */
656 static void
657 screen_redraw_draw_borders_cell(struct screen_redraw_ctx *ctx, u_int i, u_int j)
658 {
659 struct client *c = ctx->c;
660 struct session *s = c->session;
661 struct window *w = s->curw->window;
662 struct options *oo = w->options;
663 struct tty *tty = &c->tty;
664 struct format_tree *ft;
665 struct window_pane *wp, *active = server_client_get_pane(c);
666 struct grid_cell gc;
667 const struct grid_cell *tmp;
668 struct overlay_ranges r;
669 u_int cell_type, x = ctx->ox + i, y = ctx->oy + j;
670 int arrows = 0, border;
671 int isolates;
672
673 if (c->overlay_check != NULL) {
674 c->overlay_check(c, c->overlay_data, x, y, 1, &r);
675 if (r.nx[0] + r.nx[1] == 0)
676 return;
677 }
678
679 cell_type = screen_redraw_check_cell(ctx, x, y, &wp);
680 if (cell_type == CELL_INSIDE)
681 return;
682
683 if (wp == NULL) {
684 if (!ctx->no_pane_gc_set) {
685 ft = format_create_defaults(NULL, c, s, s->curw, NULL);
686 memcpy(&ctx->no_pane_gc, &grid_default_cell, sizeof gc);
687 style_add(&ctx->no_pane_gc, oo, "pane-border-style",
688 ft);
689 format_free(ft);
690 ctx->no_pane_gc_set = 1;
691 }
692 memcpy(&gc, &ctx->no_pane_gc, sizeof gc);
693 } else {
694 tmp = screen_redraw_draw_borders_style(ctx, x, y, wp);
695 if (tmp == NULL)
696 return;
697 memcpy(&gc, tmp, sizeof gc);
698
699 if (server_is_marked(s, s->curw, marked_pane.wp) &&
700 screen_redraw_check_is(ctx, x, y, marked_pane.wp))
701 gc.attr ^= GRID_ATTR_REVERSE;
702 }
703 screen_redraw_border_set(w, wp, ctx->pane_lines, cell_type, &gc);
704
705 if (cell_type == CELL_TOPBOTTOM &&
706 (c->flags & CLIENT_UTF8) &&
707 tty_term_has(tty->term, TTYC_BIDI))
708 isolates = 1;
709 else
710 isolates = 0;
711
712 if (ctx->statustop)
713 tty_cursor(tty, i, ctx->statuslines + j);
714 else
715 tty_cursor(tty, i, j);
716 if (isolates)
717 tty_puts(tty, END_ISOLATE);
718
719 switch (options_get_number(oo, "pane-border-indicators")) {
720 case PANE_BORDER_ARROWS:
721 case PANE_BORDER_BOTH:
722 arrows = 1;
723 break;
724 }
725
726 if (wp != NULL && arrows) {
727 border = screen_redraw_pane_border(ctx, active, x, y);
728 if (((i == wp->xoff + 1 &&
729 (cell_type == CELL_LEFTRIGHT ||
730 (cell_type == CELL_TOPJOIN &&
731 border == SCREEN_REDRAW_BORDER_BOTTOM) ||
732 (cell_type == CELL_BOTTOMJOIN &&
733 border == SCREEN_REDRAW_BORDER_TOP))) ||
734 (j == wp->yoff + 1 &&
735 (cell_type == CELL_TOPBOTTOM ||
736 (cell_type == CELL_LEFTJOIN &&
737 border == SCREEN_REDRAW_BORDER_RIGHT) ||
738 (cell_type == CELL_RIGHTJOIN &&
739 border == SCREEN_REDRAW_BORDER_LEFT)))) &&
740 screen_redraw_check_is(ctx, x, y, active)) {
741 gc.attr |= GRID_ATTR_CHARSET;
742 utf8_set(&gc.data, BORDER_MARKERS[border]);
743 }
744 }
745
746 tty_cell(tty, &gc, &grid_default_cell, NULL, NULL);
747 if (isolates)
748 tty_puts(tty, START_ISOLATE);
749 }
750
751 /* Draw the borders. */
752 static void
753 screen_redraw_draw_borders(struct screen_redraw_ctx *ctx)
754 {
755 struct client *c = ctx->c;
756 struct session *s = c->session;
757 struct window *w = s->curw->window;
758 struct window_pane *wp;
759 u_int i, j;
760
761 log_debug("%s: %s @%u", __func__, c->name, w->id);
762
763 TAILQ_FOREACH(wp, &w->panes, entry)
764 wp->border_gc_set = 0;
765
766 for (j = 0; j < c->tty.sy - ctx->statuslines; j++) {
767 for (i = 0; i < c->tty.sx; i++)
768 screen_redraw_draw_borders_cell(ctx, i, j);
769 }
770 }
771
772 /* Draw the panes. */
773 static void
774 screen_redraw_draw_panes(struct screen_redraw_ctx *ctx)
775 {
776 struct client *c = ctx->c;
777 struct window *w = c->session->curw->window;
778 struct window_pane *wp;
779
780 log_debug("%s: %s @%u", __func__, c->name, w->id);
781
782 TAILQ_FOREACH(wp, &w->panes, entry) {
783 if (window_pane_visible(wp))
784 screen_redraw_draw_pane(ctx, wp);
785 }
786 }
787
788 /* Draw the status line. */
789 static void
790 screen_redraw_draw_status(struct screen_redraw_ctx *ctx)
791 {
792 struct client *c = ctx->c;
793 struct window *w = c->session->curw->window;
794 struct tty *tty = &c->tty;
795 struct screen *s = c->status.active;
796 u_int i, y;
797
798 log_debug("%s: %s @%u", __func__, c->name, w->id);
799
800 if (ctx->statustop)
801 y = 0;
802 else
803 y = c->tty.sy - ctx->statuslines;
804 for (i = 0; i < ctx->statuslines; i++) {
805 tty_draw_line(tty, s, 0, i, UINT_MAX, 0, y + i,
806 &grid_default_cell, NULL);
807 }
808 }
809
810 /* Draw one pane. */
811 static void
812 screen_redraw_draw_pane(struct screen_redraw_ctx *ctx, struct window_pane *wp)
813 {
814 struct client *c = ctx->c;
815 struct window *w = c->session->curw->window;
816 struct tty *tty = &c->tty;
817 struct screen *s = wp->screen;
818 struct colour_palette *palette = &wp->palette;
819 struct grid_cell defaults;
820 u_int i, j, top, x, y, width;
821
822 log_debug("%s: %s @%u %%%u", __func__, c->name, w->id, wp->id);
823
824 if (wp->xoff + wp->sx <= ctx->ox || wp->xoff >= ctx->ox + ctx->sx)
825 return;
826 if (ctx->statustop)
827 top = ctx->statuslines;
828 else
829 top = 0;
830 for (j = 0; j < wp->sy; j++) {
831 if (wp->yoff + j < ctx->oy || wp->yoff + j >= ctx->oy + ctx->sy)
832 continue;
833 y = top + wp->yoff + j - ctx->oy;
834
835 if (wp->xoff >= ctx->ox &&
836 wp->xoff + wp->sx <= ctx->ox + ctx->sx) {
837 /* All visible. */
838 i = 0;
839 x = wp->xoff - ctx->ox;
840 width = wp->sx;
841 } else if (wp->xoff < ctx->ox &&
842 wp->xoff + wp->sx > ctx->ox + ctx->sx) {
843 /* Both left and right not visible. */
844 i = ctx->ox;
845 x = 0;
846 width = ctx->sx;
847 } else if (wp->xoff < ctx->ox) {
848 /* Left not visible. */
849 i = ctx->ox - wp->xoff;
850 x = 0;
851 width = wp->sx - i;
852 } else {
853 /* Right not visible. */
854 i = 0;
855 x = wp->xoff - ctx->ox;
856 width = ctx->sx - x;
857 }
858 log_debug("%s: %s %%%u line %u,%u at %u,%u, width %u",
859 __func__, c->name, wp->id, i, j, x, y, width);
860
861 tty_default_colours(&defaults, wp);
862 tty_draw_line(tty, s, i, j, width, x, y, &defaults, palette);
863 }
864
865 #ifdef ENABLE_SIXEL
866 tty_draw_images(c, wp, s);
867 #endif
868 }
tmux -- terminal multiplexer similar to GNU Screen