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 <string.h>
22:
23: #include "tmux.h"
24:
25: static int screen_redraw_cell_border1(struct window_pane *, u_int, u_int);
26: static int screen_redraw_cell_border(struct client *, u_int, u_int);
27: static int screen_redraw_check_cell(struct client *, u_int, u_int, int,
28: struct window_pane **);
29: static int screen_redraw_check_is(u_int, u_int, int, int, struct window *,
30: struct window_pane *, struct window_pane *);
31:
32: static int screen_redraw_make_pane_status(struct client *, struct window *,
33: struct window_pane *);
34: static void screen_redraw_draw_pane_status(struct client *, int);
35:
36: static void screen_redraw_draw_borders(struct client *, int, int, u_int);
37: static void screen_redraw_draw_panes(struct client *, u_int);
38: static void screen_redraw_draw_status(struct client *, u_int);
39: static void screen_redraw_draw_number(struct client *, struct window_pane *,
40: u_int);
41:
42: #define CELL_INSIDE 0
43: #define CELL_LEFTRIGHT 1
44: #define CELL_TOPBOTTOM 2
45: #define CELL_TOPLEFT 3
46: #define CELL_TOPRIGHT 4
47: #define CELL_BOTTOMLEFT 5
48: #define CELL_BOTTOMRIGHT 6
49: #define CELL_TOPJOIN 7
50: #define CELL_BOTTOMJOIN 8
51: #define CELL_LEFTJOIN 9
52: #define CELL_RIGHTJOIN 10
53: #define CELL_JOIN 11
54: #define CELL_OUTSIDE 12
55:
56: #define CELL_BORDERS " xqlkmjwvtun~"
57:
58: #define CELL_STATUS_OFF 0
59: #define CELL_STATUS_TOP 1
60: #define CELL_STATUS_BOTTOM 2
61:
62: /* Check if cell is on the border of a particular pane. */
63: static int
64: screen_redraw_cell_border1(struct window_pane *wp, u_int px, u_int py)
65: {
66: /* Inside pane. */
67: if (px >= wp->xoff && px < wp->xoff + wp->sx &&
68: py >= wp->yoff && py < wp->yoff + wp->sy)
69: return (0);
70:
71: /* Left/right borders. */
72: if ((wp->yoff == 0 || py >= wp->yoff - 1) && py <= wp->yoff + wp->sy) {
73: if (wp->xoff != 0 && px == wp->xoff - 1)
74: return (1);
75: if (px == wp->xoff + wp->sx)
76: return (2);
77: }
78:
79: /* Top/bottom borders. */
80: if ((wp->xoff == 0 || px >= wp->xoff - 1) && px <= wp->xoff + wp->sx) {
81: if (wp->yoff != 0 && py == wp->yoff - 1)
82: return (3);
83: if (py == wp->yoff + wp->sy)
84: return (4);
85: }
86:
87: /* Outside pane. */
88: return (-1);
89: }
90:
91: /* Check if a cell is on the pane border. */
92: static int
93: screen_redraw_cell_border(struct client *c, u_int px, u_int py)
94: {
95: struct window *w = c->session->curw->window;
96: struct window_pane *wp;
97: int retval;
98:
99: /* Check all the panes. */
100: TAILQ_FOREACH(wp, &w->panes, entry) {
101: if (!window_pane_visible(wp))
102: continue;
103: if ((retval = screen_redraw_cell_border1(wp, px, py)) != -1)
104: return (!!retval);
105: }
106:
107: return (0);
108: }
109:
110: /* Check if cell inside a pane. */
111: static int
112: screen_redraw_check_cell(struct client *c, u_int px, u_int py, int pane_status,
113: struct window_pane **wpp)
114: {
115: struct window *w = c->session->curw->window;
116: struct window_pane *wp;
117: int borders;
118: u_int right, line;
119:
120: *wpp = NULL;
121:
122: if (px > w->sx || py > w->sy)
123: return (CELL_OUTSIDE);
124:
125: if (pane_status != CELL_STATUS_OFF) {
126: TAILQ_FOREACH(wp, &w->panes, entry) {
127: if (!window_pane_visible(wp))
128: continue;
129:
130: if (pane_status == CELL_STATUS_TOP)
131: line = wp->yoff - 1;
132: else
133: line = wp->yoff + wp->sy;
134: right = wp->xoff + 2 + wp->status_size - 1;
135:
136: if (py == line && px >= wp->xoff + 2 && px <= right)
137: return (CELL_INSIDE);
138: }
139: }
140:
141: TAILQ_FOREACH(wp, &w->panes, entry) {
142: if (!window_pane_visible(wp))
143: continue;
144: *wpp = wp;
145:
146: /* If outside the pane and its border, skip it. */
147: if ((wp->xoff != 0 && px < wp->xoff - 1) ||
148: px > wp->xoff + wp->sx ||
149: (wp->yoff != 0 && py < wp->yoff - 1) ||
150: py > wp->yoff + wp->sy)
151: continue;
152:
153: /* If definitely inside, return so. */
154: if (!screen_redraw_cell_border(c, px, py))
155: return (CELL_INSIDE);
156:
157: /*
158: * Construct a bitmask of whether the cells to the left (bit
159: * 4), right, top, and bottom (bit 1) of this cell are borders.
160: */
161: borders = 0;
162: if (px == 0 || screen_redraw_cell_border(c, px - 1, py))
163: borders |= 8;
164: if (px <= w->sx && screen_redraw_cell_border(c, px + 1, py))
165: borders |= 4;
166: if (pane_status == CELL_STATUS_TOP) {
167: if (py != 0 && screen_redraw_cell_border(c, px, py - 1))
168: borders |= 2;
169: } else {
170: if (py == 0 || screen_redraw_cell_border(c, px, py - 1))
171: borders |= 2;
172: }
173: if (py <= w->sy && screen_redraw_cell_border(c, px, py + 1))
174: borders |= 1;
175:
176: /*
177: * Figure out what kind of border this cell is. Only one bit
178: * set doesn't make sense (can't have a border cell with no
179: * others connected).
180: */
181: switch (borders) {
182: case 15: /* 1111, left right top bottom */
183: return (CELL_JOIN);
184: case 14: /* 1110, left right top */
185: return (CELL_BOTTOMJOIN);
186: case 13: /* 1101, left right bottom */
187: return (CELL_TOPJOIN);
188: case 12: /* 1100, left right */
189: return (CELL_TOPBOTTOM);
190: case 11: /* 1011, left top bottom */
191: return (CELL_RIGHTJOIN);
192: case 10: /* 1010, left top */
193: return (CELL_BOTTOMRIGHT);
194: case 9: /* 1001, left bottom */
195: return (CELL_TOPRIGHT);
196: case 7: /* 0111, right top bottom */
197: return (CELL_LEFTJOIN);
198: case 6: /* 0110, right top */
199: return (CELL_BOTTOMLEFT);
200: case 5: /* 0101, right bottom */
201: return (CELL_TOPLEFT);
202: case 3: /* 0011, top bottom */
203: return (CELL_LEFTRIGHT);
204: }
205: }
206:
207: return (CELL_OUTSIDE);
208: }
209:
210: /* Check if the border of a particular pane. */
211: static int
212: screen_redraw_check_is(u_int px, u_int py, int type, int pane_status,
213: struct window *w, struct window_pane *wantwp, struct window_pane *wp)
214: {
215: int border;
216:
217: /* Is this off the active pane border? */
218: border = screen_redraw_cell_border1(wantwp, px, py);
219: if (border == 0 || border == -1)
220: return (0);
221: if (pane_status == CELL_STATUS_TOP && border == 4)
222: return (0);
223: if (pane_status == CELL_STATUS_BOTTOM && border == 3)
224: return (0);
225:
226: /* If there are more than two panes, that's enough. */
227: if (window_count_panes(w) != 2)
228: return (1);
229:
230: /* Else if the cell is not a border cell, forget it. */
231: if (wp == NULL || (type == CELL_OUTSIDE || type == CELL_INSIDE))
232: return (1);
233:
234: /* With status lines mark the entire line. */
235: if (pane_status != CELL_STATUS_OFF)
236: return (1);
237:
238: /* Check if the pane covers the whole width. */
239: if (wp->xoff == 0 && wp->sx == w->sx) {
240: /* This can either be the top pane or the bottom pane. */
241: if (wp->yoff == 0) { /* top pane */
242: if (wp == wantwp)
243: return (px <= wp->sx / 2);
244: return (px > wp->sx / 2);
245: }
246: return (0);
247: }
248:
249: /* Check if the pane covers the whole height. */
250: if (wp->yoff == 0 && wp->sy == w->sy) {
251: /* This can either be the left pane or the right pane. */
252: if (wp->xoff == 0) { /* left pane */
253: if (wp == wantwp)
254: return (py <= wp->sy / 2);
255: return (py > wp->sy / 2);
256: }
257: return (0);
258: }
259:
260: return (1);
261: }
262:
263: /* Update pane status. */
264: static int
265: screen_redraw_make_pane_status(struct client *c, struct window *w,
266: struct window_pane *wp)
267: {
268: struct grid_cell gc;
269: const char *fmt;
270: struct format_tree *ft;
271: char *out;
272: size_t outlen;
273: struct screen_write_ctx ctx;
274: struct screen old;
275:
276: if (wp == w->active)
277: style_apply(&gc, w->options, "pane-active-border-style");
278: else
279: style_apply(&gc, w->options, "pane-border-style");
280:
281: fmt = options_get_string(w->options, "pane-border-format");
282:
283: ft = format_create(NULL, FORMAT_PANE|wp->id, 0);
284: format_defaults(ft, c, NULL, NULL, wp);
285:
286: memcpy(&old, &wp->status_screen, sizeof old);
287: screen_init(&wp->status_screen, wp->sx, 1, 0);
288: wp->status_screen.mode = 0;
289:
290: out = format_expand(ft, fmt);
291: outlen = screen_write_cstrlen("%s", out);
292: if (outlen > wp->sx - 4)
293: outlen = wp->sx - 4;
294: screen_resize(&wp->status_screen, outlen, 1, 0);
295:
296: screen_write_start(&ctx, NULL, &wp->status_screen);
297: screen_write_cursormove(&ctx, 0, 0);
298: screen_write_clearline(&ctx, 8);
299: screen_write_cnputs(&ctx, outlen, &gc, "%s", out);
300: screen_write_stop(&ctx);
301:
302: format_free(ft);
303:
304: wp->status_size = outlen;
305:
306: if (grid_compare(wp->status_screen.grid, old.grid) == 0) {
307: screen_free(&old);
308: return (0);
309: }
310: screen_free(&old);
311: return (1);
312: }
313:
314: /* Draw pane status. */
315: static void
316: screen_redraw_draw_pane_status(struct client *c, int pane_status)
317: {
318: struct window *w = c->session->curw->window;
319: struct options *oo = c->session->options;
320: struct tty *tty = &c->tty;
321: struct window_pane *wp;
322: int spos;
323: u_int yoff;
324:
325: spos = options_get_number(oo, "status-position");
326: TAILQ_FOREACH(wp, &w->panes, entry) {
327: if (!window_pane_visible(wp))
328: continue;
329: if (pane_status == CELL_STATUS_TOP)
330: yoff = wp->yoff - 1;
331: else
332: yoff = wp->yoff + wp->sy;
333: if (spos == 0)
334: yoff += 1;
335:
336: tty_draw_line(tty, NULL, &wp->status_screen, 0, wp->xoff + 2,
337: yoff);
338: }
339: tty_cursor(tty, 0, 0);
340: }
341:
342: /* Update status line and change flags if unchanged. */
343: void
344: screen_redraw_update(struct client *c)
345: {
346: struct window *w = c->session->curw->window;
347: struct window_pane *wp;
348: struct options *wo = w->options;
349: int redraw;
350:
351: if (c->message_string != NULL)
352: redraw = status_message_redraw(c);
353: else if (c->prompt_string != NULL)
354: redraw = status_prompt_redraw(c);
355: else
356: redraw = status_redraw(c);
357: if (!redraw)
358: c->flags &= ~CLIENT_STATUS;
359:
360: if (options_get_number(wo, "pane-border-status") != CELL_STATUS_OFF) {
361: redraw = 0;
362: TAILQ_FOREACH(wp, &w->panes, entry) {
363: if (screen_redraw_make_pane_status(c, w, wp))
364: redraw = 1;
365: }
366: if (redraw)
367: c->flags |= CLIENT_BORDERS;
368: }
369: }
370:
371: /* Redraw entire screen. */
372: void
373: screen_redraw_screen(struct client *c, int draw_panes, int draw_status,
374: int draw_borders)
375: {
376: struct options *oo = c->session->options;
377: struct tty *tty = &c->tty;
378: struct window *w = c->session->curw->window;
379: struct options *wo = w->options;
380: u_int top;
381: int status, pane_status, spos;
382:
383: /* Suspended clients should not be updated. */
384: if (c->flags & CLIENT_SUSPENDED)
385: return;
386:
387: /* Get status line, er, status. */
388: spos = options_get_number(oo, "status-position");
389: if (c->message_string != NULL || c->prompt_string != NULL)
390: status = 1;
391: else
392: status = options_get_number(oo, "status");
393: top = 0;
394: if (status && spos == 0)
395: top = 1;
396: if (!status)
397: draw_status = 0;
398:
399: /* Draw the elements. */
400: if (draw_borders) {
401: pane_status = options_get_number(wo, "pane-border-status");
402: screen_redraw_draw_borders(c, status, pane_status, top);
403: if (pane_status != CELL_STATUS_OFF)
404: screen_redraw_draw_pane_status(c, pane_status);
405: }
406: if (draw_panes)
407: screen_redraw_draw_panes(c, top);
408: if (draw_status)
409: screen_redraw_draw_status(c, top);
410: tty_reset(tty);
411: }
412:
413: /* Draw a single pane. */
414: void
415: screen_redraw_pane(struct client *c, struct window_pane *wp)
416: {
417: u_int i, yoff;
418:
419: if (!window_pane_visible(wp))
420: return;
421:
422: yoff = wp->yoff;
423: if (status_at_line(c) == 0)
424: yoff++;
425:
426: log_debug("%s: redraw pane %%%u (at %u,%u)", c->name, wp->id,
427: wp->xoff, yoff);
428:
429: for (i = 0; i < wp->sy; i++)
430: tty_draw_pane(&c->tty, wp, i, wp->xoff, yoff);
431: tty_reset(&c->tty);
432: }
433:
434: /* Draw the borders. */
435: static void
436: screen_redraw_draw_borders(struct client *c, int status, int pane_status,
437: u_int top)
438: {
439: struct session *s = c->session;
440: struct window *w = s->curw->window;
441: struct options *oo = w->options;
442: struct tty *tty = &c->tty;
443: struct window_pane *wp;
444: struct grid_cell m_active_gc, active_gc, m_other_gc, other_gc;
445: struct grid_cell msg_gc;
446: u_int i, j, type, msgx = 0, msgy = 0;
447: int active, small, flags;
448: char msg[256];
449: const char *tmp;
450: size_t msglen = 0;
451:
452: small = (tty->sy - status + top > w->sy) || (tty->sx > w->sx);
453: if (small) {
454: flags = w->flags & (WINDOW_FORCEWIDTH|WINDOW_FORCEHEIGHT);
455: if (flags == (WINDOW_FORCEWIDTH|WINDOW_FORCEHEIGHT))
456: tmp = "force-width, force-height";
457: else if (flags == WINDOW_FORCEWIDTH)
458: tmp = "force-width";
459: else if (flags == WINDOW_FORCEHEIGHT)
460: tmp = "force-height";
461: else
462: tmp = "a smaller client";
463: xsnprintf(msg, sizeof msg, "(size %ux%u from %s)",
464: w->sx, w->sy, tmp);
465: msglen = strlen(msg);
466:
467: if (tty->sy - 1 - status + top > w->sy && tty->sx >= msglen) {
468: msgx = tty->sx - msglen;
469: msgy = tty->sy - 1 - status + top;
470: } else if (tty->sx - w->sx > msglen) {
471: msgx = tty->sx - msglen;
472: msgy = tty->sy - 1 - status + top;
473: } else
474: small = 0;
475: }
476:
477: style_apply(&other_gc, oo, "pane-border-style");
478: style_apply(&active_gc, oo, "pane-active-border-style");
479: active_gc.attr = other_gc.attr = GRID_ATTR_CHARSET;
480:
481: memcpy(&m_other_gc, &other_gc, sizeof m_other_gc);
482: m_other_gc.attr ^= GRID_ATTR_REVERSE;
483: memcpy(&m_active_gc, &active_gc, sizeof m_active_gc);
484: m_active_gc.attr ^= GRID_ATTR_REVERSE;
485:
486: for (j = 0; j < tty->sy - status; j++) {
487: for (i = 0; i < tty->sx; i++) {
488: type = screen_redraw_check_cell(c, i, j, pane_status,
489: &wp);
490: if (type == CELL_INSIDE)
491: continue;
492: if (type == CELL_OUTSIDE && small &&
493: i > msgx && j == msgy)
494: continue;
495: active = screen_redraw_check_is(i, j, type, pane_status,
496: w, w->active, wp);
497: if (server_is_marked(s, s->curw, marked_pane.wp) &&
498: screen_redraw_check_is(i, j, type, pane_status, w,
499: marked_pane.wp, wp)) {
500: if (active)
501: tty_attributes(tty, &m_active_gc, NULL);
502: else
503: tty_attributes(tty, &m_other_gc, NULL);
504: } else if (active)
505: tty_attributes(tty, &active_gc, NULL);
506: else
507: tty_attributes(tty, &other_gc, NULL);
508: tty_cursor(tty, i, top + j);
509: tty_putc(tty, CELL_BORDERS[type]);
510: }
511: }
512:
513: if (small) {
514: memcpy(&msg_gc, &grid_default_cell, sizeof msg_gc);
515: tty_attributes(tty, &msg_gc, NULL);
516: tty_cursor(tty, msgx, msgy);
517: tty_puts(tty, msg);
518: }
519: }
520:
521: /* Draw the panes. */
522: static void
523: screen_redraw_draw_panes(struct client *c, u_int top)
524: {
525: struct window *w = c->session->curw->window;
526: struct tty *tty = &c->tty;
527: struct window_pane *wp;
528: u_int i;
529:
530: TAILQ_FOREACH(wp, &w->panes, entry) {
531: if (!window_pane_visible(wp))
532: continue;
533: for (i = 0; i < wp->sy; i++)
534: tty_draw_pane(tty, wp, i, wp->xoff, top + wp->yoff);
535: if (c->flags & CLIENT_IDENTIFY)
536: screen_redraw_draw_number(c, wp, top);
537: }
538: }
539:
540: /* Draw the status line. */
541: static void
542: screen_redraw_draw_status(struct client *c, u_int top)
543: {
544: struct tty *tty = &c->tty;
545:
546: if (top)
547: tty_draw_line(tty, NULL, &c->status, 0, 0, 0);
548: else
549: tty_draw_line(tty, NULL, &c->status, 0, 0, tty->sy - 1);
550: }
551:
552: /* Draw number on a pane. */
553: static void
554: screen_redraw_draw_number(struct client *c, struct window_pane *wp, u_int top)
555: {
556: struct tty *tty = &c->tty;
557: struct session *s = c->session;
558: struct options *oo = s->options;
559: struct window *w = wp->window;
560: struct grid_cell gc;
561: u_int idx, px, py, i, j, xoff, yoff;
562: int colour, active_colour;
563: char buf[16], *ptr;
564: size_t len;
565:
566: if (window_pane_index(wp, &idx) != 0)
567: fatalx("index not found");
568: len = xsnprintf(buf, sizeof buf, "%u", idx);
569:
570: if (wp->sx < len)
571: return;
572: colour = options_get_number(oo, "display-panes-colour");
573: active_colour = options_get_number(oo, "display-panes-active-colour");
574:
575: px = wp->sx / 2; py = wp->sy / 2;
576: xoff = wp->xoff; yoff = wp->yoff;
577:
578: if (top)
579: yoff++;
580:
581: if (wp->sx < len * 6 || wp->sy < 5) {
582: tty_cursor(tty, xoff + px - len / 2, yoff + py);
583: goto draw_text;
584: }
585:
586: px -= len * 3;
587: py -= 2;
588:
589: memcpy(&gc, &grid_default_cell, sizeof gc);
590: if (w->active == wp)
591: gc.bg = active_colour;
592: else
593: gc.bg = colour;
594: gc.flags |= GRID_FLAG_NOPALETTE;
595:
596: tty_attributes(tty, &gc, wp);
597: for (ptr = buf; *ptr != '\0'; ptr++) {
598: if (*ptr < '0' || *ptr > '9')
599: continue;
600: idx = *ptr - '0';
601:
602: for (j = 0; j < 5; j++) {
603: for (i = px; i < px + 5; i++) {
604: tty_cursor(tty, xoff + i, yoff + py + j);
605: if (window_clock_table[idx][j][i - px])
606: tty_putc(tty, ' ');
607: }
608: }
609: px += 6;
610: }
611:
612: len = xsnprintf(buf, sizeof buf, "%ux%u", wp->sx, wp->sy);
613: if (wp->sx < len || wp->sy < 6)
614: return;
615: tty_cursor(tty, xoff + wp->sx - len, yoff);
616:
617: draw_text:
618: memcpy(&gc, &grid_default_cell, sizeof gc);
619: if (w->active == wp)
620: gc.fg = active_colour;
621: else
622: gc.fg = colour;
623: gc.flags |= GRID_FLAG_NOPALETTE;
624:
625: tty_attributes(tty, &gc, wp);
626: tty_puts(tty, buf);
627:
628: tty_cursor(tty, 0, 0);
629: }
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