Annotation of src/usr.bin/tmux/screen-redraw.c, Revision 1.29
1.29 ! nicm 1: /* $OpenBSD: screen-redraw.c,v 1.28 2014/11/14 02:19:47 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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:
1.15 nicm 25: int screen_redraw_cell_border1(struct window_pane *, u_int, u_int);
1.7 nicm 26: int screen_redraw_cell_border(struct client *, u_int, u_int);
1.24 nicm 27: int screen_redraw_check_cell(struct client *, u_int, u_int,
28: struct window_pane **);
29: int screen_redraw_check_active(u_int, u_int, int, struct window *,
30: struct window_pane *);
31:
1.26 nicm 32: void screen_redraw_draw_borders(struct client *, int, u_int);
33: void screen_redraw_draw_panes(struct client *, u_int);
34: void screen_redraw_draw_status(struct client *, u_int);
1.10 nicm 35: void screen_redraw_draw_number(struct client *, struct window_pane *);
1.1 nicm 36:
1.6 nicm 37: #define CELL_INSIDE 0
1.7 nicm 38: #define CELL_LEFTRIGHT 1
39: #define CELL_TOPBOTTOM 2
40: #define CELL_TOPLEFT 3
41: #define CELL_TOPRIGHT 4
42: #define CELL_BOTTOMLEFT 5
43: #define CELL_BOTTOMRIGHT 6
44: #define CELL_TOPJOIN 7
45: #define CELL_BOTTOMJOIN 8
46: #define CELL_LEFTJOIN 9
47: #define CELL_RIGHTJOIN 10
48: #define CELL_JOIN 11
49: #define CELL_OUTSIDE 12
1.6 nicm 50:
1.17 nicm 51: #define CELL_BORDERS " xqlkmjwvtun~"
52:
1.15 nicm 53: /* Check if cell is on the border of a particular pane. */
54: int
55: screen_redraw_cell_border1(struct window_pane *wp, u_int px, u_int py)
56: {
57: /* Inside pane. */
58: if (px >= wp->xoff && px < wp->xoff + wp->sx &&
59: py >= wp->yoff && py < wp->yoff + wp->sy)
60: return (0);
61:
62: /* Left/right borders. */
63: if ((wp->yoff == 0 || py >= wp->yoff - 1) && py <= wp->yoff + wp->sy) {
64: if (wp->xoff != 0 && px == wp->xoff - 1)
65: return (1);
66: if (px == wp->xoff + wp->sx)
67: return (1);
68: }
69:
70: /* Top/bottom borders. */
71: if ((wp->xoff == 0 || px >= wp->xoff - 1) && px <= wp->xoff + wp->sx) {
72: if (wp->yoff != 0 && py == wp->yoff - 1)
73: return (1);
74: if (py == wp->yoff + wp->sy)
75: return (1);
76: }
77:
78: /* Outside pane. */
79: return (-1);
80: }
81:
1.7 nicm 82: /* Check if a cell is on the pane border. */
1.1 nicm 83: int
1.7 nicm 84: screen_redraw_cell_border(struct client *c, u_int px, u_int py)
1.1 nicm 85: {
86: struct window *w = c->session->curw->window;
87: struct window_pane *wp;
1.15 nicm 88: int retval;
1.1 nicm 89:
1.7 nicm 90: /* Check all the panes. */
1.1 nicm 91: TAILQ_FOREACH(wp, &w->panes, entry) {
1.3 nicm 92: if (!window_pane_visible(wp))
93: continue;
1.15 nicm 94: if ((retval = screen_redraw_cell_border1(wp, px, py)) != -1)
95: return (retval);
1.7 nicm 96: }
97:
98: return (0);
99: }
100:
101: /* Check if cell inside a pane. */
102: int
1.24 nicm 103: screen_redraw_check_cell(struct client *c, u_int px, u_int py,
104: struct window_pane **wpp)
1.7 nicm 105: {
106: struct window *w = c->session->curw->window;
107: struct window_pane *wp;
108: int borders;
109:
110: if (px > w->sx || py > w->sy)
111: return (CELL_OUTSIDE);
112:
113: TAILQ_FOREACH(wp, &w->panes, entry) {
114: if (!window_pane_visible(wp))
115: continue;
1.24 nicm 116: *wpp = wp;
1.7 nicm 117:
118: /* If outside the pane and its border, skip it. */
119: if ((wp->xoff != 0 && px < wp->xoff - 1) ||
120: px > wp->xoff + wp->sx ||
121: (wp->yoff != 0 && py < wp->yoff - 1) ||
122: py > wp->yoff + wp->sy)
123: continue;
124:
125: /* If definitely inside, return so. */
126: if (!screen_redraw_cell_border(c, px, py))
127: return (CELL_INSIDE);
128:
1.14 nicm 129: /*
1.7 nicm 130: * Construct a bitmask of whether the cells to the left (bit
131: * 4), right, top, and bottom (bit 1) of this cell are borders.
132: */
133: borders = 0;
134: if (px == 0 || screen_redraw_cell_border(c, px - 1, py))
135: borders |= 8;
136: if (px <= w->sx && screen_redraw_cell_border(c, px + 1, py))
137: borders |= 4;
138: if (py == 0 || screen_redraw_cell_border(c, px, py - 1))
139: borders |= 2;
140: if (py <= w->sy && screen_redraw_cell_border(c, px, py + 1))
141: borders |= 1;
142:
1.14 nicm 143: /*
1.7 nicm 144: * Figure out what kind of border this cell is. Only one bit
145: * set doesn't make sense (can't have a border cell with no
146: * others connected).
147: */
148: switch (borders) {
149: case 15: /* 1111, left right top bottom */
150: return (CELL_JOIN);
151: case 14: /* 1110, left right top */
152: return (CELL_BOTTOMJOIN);
153: case 13: /* 1101, left right bottom */
154: return (CELL_TOPJOIN);
155: case 12: /* 1100, left right */
156: return (CELL_TOPBOTTOM);
157: case 11: /* 1011, left top bottom */
158: return (CELL_RIGHTJOIN);
159: case 10: /* 1010, left top */
160: return (CELL_BOTTOMRIGHT);
161: case 9: /* 1001, left bottom */
162: return (CELL_TOPRIGHT);
163: case 7: /* 0111, right top bottom */
164: return (CELL_LEFTJOIN);
165: case 6: /* 0110, right top */
166: return (CELL_BOTTOMLEFT);
167: case 5: /* 0101, right bottom */
168: return (CELL_TOPLEFT);
169: case 3: /* 0011, top bottom */
170: return (CELL_LEFTRIGHT);
1.1 nicm 171: }
172: }
173:
1.24 nicm 174: *wpp = NULL;
1.6 nicm 175: return (CELL_OUTSIDE);
1.1 nicm 176: }
177:
1.24 nicm 178: /* Check active pane indicator. */
179: int
180: screen_redraw_check_active(u_int px, u_int py, int type, struct window *w,
181: struct window_pane *wp)
182: {
183: /* Is this off the active pane border? */
184: if (screen_redraw_cell_border1(w->active, px, py) != 1)
185: return (0);
186:
187: /* If there are more than two panes, that's enough. */
188: if (window_count_panes(w) != 2)
189: return (1);
190:
191: /* Else if the cell is not a border cell, forget it. */
192: if (wp == NULL || (type == CELL_OUTSIDE || type == CELL_INSIDE))
193: return (1);
194:
195: /* Check if the pane covers the whole width. */
196: if (wp->xoff == 0 && wp->sx == w->sx) {
197: /* This can either be the top pane or the bottom pane. */
198: if (wp->yoff == 0) { /* top pane */
199: if (wp == w->active)
200: return (px <= wp->sx / 2);
201: return (px > wp->sx / 2);
202: }
203: return (0);
204: }
205:
206: /* Check if the pane covers the whole height. */
207: if (wp->yoff == 0 && wp->sy == w->sy) {
208: /* This can either be the left pane or the right pane. */
209: if (wp->xoff == 0) { /* left pane */
210: if (wp == w->active)
211: return (py <= wp->sy / 2);
212: return (py > wp->sy / 2);
213: }
214: return (0);
215: }
216:
217: return (type);
218: }
219:
1.4 nicm 220: /* Redraw entire screen. */
1.1 nicm 221: void
1.26 nicm 222: screen_redraw_screen(struct client *c, int draw_panes, int draw_status,
223: int draw_borders)
1.1 nicm 224: {
1.26 nicm 225: struct options *oo = &c->session->options;
226: struct tty *tty = &c->tty;
227: u_int top;
228: int status, spos;
1.18 nicm 229:
230: /* Suspended clients should not be updated. */
231: if (c->flags & CLIENT_SUSPENDED)
232: return;
1.1 nicm 233:
234: /* Get status line, er, status. */
1.21 nicm 235: spos = options_get_number(oo, "status-position");
1.4 nicm 236: if (c->message_string != NULL || c->prompt_string != NULL)
237: status = 1;
238: else
1.21 nicm 239: status = options_get_number(oo, "status");
240: top = 0;
241: if (status && spos == 0)
242: top = 1;
1.26 nicm 243: if (!status)
244: draw_status = 0;
245:
246: if (draw_borders)
247: screen_redraw_draw_borders(c, status, top);
248: if (draw_panes)
249: screen_redraw_draw_panes(c, top);
250: if (draw_status)
251: screen_redraw_draw_status(c, top);
252: tty_reset(tty);
253: }
1.4 nicm 254:
1.26 nicm 255: /* Draw a single pane. */
256: void
257: screen_redraw_pane(struct client *c, struct window_pane *wp)
258: {
259: u_int i, yoff;
260:
261: if (!window_pane_visible(wp))
1.4 nicm 262: return;
1.1 nicm 263:
1.26 nicm 264: yoff = wp->yoff;
265: if (status_at_line(c) == 0)
266: yoff++;
267:
268: for (i = 0; i < wp->sy; i++)
269: tty_draw_line(&c->tty, wp->screen, i, wp->xoff, yoff);
270: tty_reset(&c->tty);
271: }
272:
273: /* Draw the borders. */
274: void
275: screen_redraw_draw_borders(struct client *c, int status, u_int top)
276: {
277: struct window *w = c->session->curw->window;
1.29 ! nicm 278: struct options *oo = &w->options;
1.26 nicm 279: struct tty *tty = &c->tty;
280: struct window_pane *wp;
1.28 nicm 281: struct grid_cell active_gc, other_gc, msg_gc;
282: u_int i, j, type, msgx = 0, msgy = 0;
283: int small, flags;
284: char msg[256];
285: const char *tmp;
286: size_t msglen = 0;
287:
288: small = (tty->sy - status + top > w->sy) || (tty->sx > w->sx);
289: if (small) {
290: flags = w->flags & (WINDOW_FORCEWIDTH|WINDOW_FORCEHEIGHT);
291: if (flags == (WINDOW_FORCEWIDTH|WINDOW_FORCEHEIGHT))
292: tmp = "force-width, force-height";
293: else if (flags == WINDOW_FORCEWIDTH)
294: tmp = "force-width";
295: else if (flags == WINDOW_FORCEHEIGHT)
296: tmp = "force-height";
297: else
298: tmp = "a smaller client";
299: xsnprintf(msg, sizeof msg, "(size %ux%u from %s)",
300: w->sx, w->sy, tmp);
301: msglen = strlen(msg);
302:
303: if (tty->sy - 1 - status + top > w->sy && tty->sx >= msglen) {
304: msgx = tty->sx - msglen;
305: msgy = tty->sy - 1 - status + top;
306: } else if (tty->sx - w->sx > msglen) {
307: msgx = tty->sx - msglen;
308: msgy = tty->sy - 1 - status + top;
309: } else
310: small = 0;
311: }
1.26 nicm 312:
1.25 nicm 313: style_apply(&other_gc, oo, "pane-border-style");
314: style_apply(&active_gc, oo, "pane-active-border-style");
1.26 nicm 315: active_gc.attr = other_gc.attr = GRID_ATTR_CHARSET;
1.15 nicm 316:
1.1 nicm 317: for (j = 0; j < tty->sy - status; j++) {
318: for (i = 0; i < tty->sx; i++) {
1.24 nicm 319: type = screen_redraw_check_cell(c, i, j, &wp);
1.15 nicm 320: if (type == CELL_INSIDE)
321: continue;
1.28 nicm 322: if (type == CELL_OUTSIDE &&
323: small && i > msgx && j == msgy)
324: continue;
1.24 nicm 325: if (screen_redraw_check_active(i, j, type, w, wp))
1.15 nicm 326: tty_attributes(tty, &active_gc);
327: else
328: tty_attributes(tty, &other_gc);
1.21 nicm 329: tty_cursor(tty, i, top + j);
1.17 nicm 330: tty_putc(tty, CELL_BORDERS[type]);
1.1 nicm 331: }
1.28 nicm 332: }
333:
334: if (small) {
335: memcpy(&msg_gc, &grid_default_cell, sizeof msg_gc);
336: tty_attributes(tty, &msg_gc);
337: tty_cursor(tty, msgx, msgy);
338: tty_puts(tty, msg);
1.1 nicm 339: }
1.26 nicm 340: }
1.1 nicm 341:
1.26 nicm 342: /* Draw the panes. */
343: void
344: screen_redraw_draw_panes(struct client *c, u_int top)
345: {
346: struct window *w = c->session->curw->window;
347: struct tty *tty = &c->tty;
348: struct window_pane *wp;
349: struct screen *s;
350: u_int i;
1.15 nicm 351:
1.1 nicm 352: TAILQ_FOREACH(wp, &w->panes, entry) {
1.3 nicm 353: if (!window_pane_visible(wp))
1.1 nicm 354: continue;
1.26 nicm 355: s = wp->screen;
356: for (i = 0; i < wp->sy; i++)
357: tty_draw_line(tty, s, i, wp->xoff, top + wp->yoff);
1.10 nicm 358: if (c->flags & CLIENT_IDENTIFY)
359: screen_redraw_draw_number(c, wp);
1.1 nicm 360: }
361: }
362:
1.26 nicm 363: /* Draw the status line. */
1.1 nicm 364: void
1.26 nicm 365: screen_redraw_draw_status(struct client *c, u_int top)
1.1 nicm 366: {
1.26 nicm 367: struct tty *tty = &c->tty;
1.23 nicm 368:
1.26 nicm 369: if (top)
370: tty_draw_line(tty, &c->status, 0, 0, 0);
371: else
372: tty_draw_line(tty, &c->status, 0, 0, tty->sy - 1);
1.10 nicm 373: }
374:
375: /* Draw number on a pane. */
376: void
377: screen_redraw_draw_number(struct client *c, struct window_pane *wp)
378: {
379: struct tty *tty = &c->tty;
380: struct session *s = c->session;
1.19 nicm 381: struct options *oo = &s->options;
1.16 nicm 382: struct window *w = wp->window;
1.10 nicm 383: struct grid_cell gc;
1.12 nicm 384: u_int idx, px, py, i, j, xoff, yoff;
1.16 nicm 385: int colour, active_colour;
1.10 nicm 386: char buf[16], *ptr;
387: size_t len;
388:
1.19 nicm 389: if (window_pane_index(wp, &idx) != 0)
390: fatalx("index not found");
1.10 nicm 391: len = xsnprintf(buf, sizeof buf, "%u", idx);
392:
393: if (wp->sx < len)
394: return;
1.16 nicm 395: colour = options_get_number(oo, "display-panes-colour");
396: active_colour = options_get_number(oo, "display-panes-active-colour");
1.10 nicm 397:
1.12 nicm 398: px = wp->sx / 2; py = wp->sy / 2;
399: xoff = wp->xoff; yoff = wp->yoff;
400:
1.10 nicm 401: if (wp->sx < len * 6 || wp->sy < 5) {
1.12 nicm 402: tty_cursor(tty, xoff + px - len / 2, yoff + py);
1.20 nicm 403: goto draw_text;
1.10 nicm 404: }
1.14 nicm 405:
1.10 nicm 406: px -= len * 3;
407: py -= 2;
408:
1.25 nicm 409: memcpy(&gc, &grid_default_cell, sizeof gc);
1.16 nicm 410: if (w->active == wp)
411: colour_set_bg(&gc, active_colour);
412: else
413: colour_set_bg(&gc, colour);
1.10 nicm 414: tty_attributes(tty, &gc);
415: for (ptr = buf; *ptr != '\0'; ptr++) {
416: if (*ptr < '0' || *ptr > '9')
417: continue;
418: idx = *ptr - '0';
1.14 nicm 419:
1.10 nicm 420: for (j = 0; j < 5; j++) {
421: for (i = px; i < px + 5; i++) {
1.12 nicm 422: tty_cursor(tty, xoff + i, yoff + py + j);
1.27 nicm 423: if (window_clock_table[idx][j][i - px])
1.11 nicm 424: tty_putc(tty, ' ');
1.10 nicm 425: }
426: }
427: px += 6;
428: }
1.20 nicm 429:
430: len = xsnprintf(buf, sizeof buf, "%ux%u", wp->sx, wp->sy);
431: if (wp->sx < len || wp->sy < 6)
432: return;
433: tty_cursor(tty, xoff + wp->sx - len, yoff);
434:
435: draw_text:
1.25 nicm 436: memcpy(&gc, &grid_default_cell, sizeof gc);
1.20 nicm 437: if (w->active == wp)
438: colour_set_fg(&gc, active_colour);
439: else
440: colour_set_fg(&gc, colour);
441: tty_attributes(tty, &gc);
442: tty_puts(tty, buf);
443:
444: tty_cursor(tty, 0, 0);
1.1 nicm 445: }
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