Annotation of src/usr.bin/tmux/screen-redraw.c, Revision 1.8
1.8 ! nicm 1: /* $OpenBSD: screen-redraw.c,v 1.7 2009/07/24 19:14:38 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:
1.7 nicm 25: int screen_redraw_cell_border(struct client *, u_int, u_int);
1.1 nicm 26: int screen_redraw_check_cell(struct client *, u_int, u_int);
27:
1.6 nicm 28: #define CELL_INSIDE 0
1.7 nicm 29: #define CELL_LEFTRIGHT 1
30: #define CELL_TOPBOTTOM 2
31: #define CELL_TOPLEFT 3
32: #define CELL_TOPRIGHT 4
33: #define CELL_BOTTOMLEFT 5
34: #define CELL_BOTTOMRIGHT 6
35: #define CELL_TOPJOIN 7
36: #define CELL_BOTTOMJOIN 8
37: #define CELL_LEFTJOIN 9
38: #define CELL_RIGHTJOIN 10
39: #define CELL_JOIN 11
40: #define CELL_OUTSIDE 12
1.6 nicm 41:
1.7 nicm 42: /* Check if a cell is on the pane border. */
1.1 nicm 43: int
1.7 nicm 44: screen_redraw_cell_border(struct client *c, u_int px, u_int py)
1.1 nicm 45: {
46: struct window *w = c->session->curw->window;
47: struct window_pane *wp;
48:
1.7 nicm 49: /* Check all the panes. */
1.1 nicm 50: TAILQ_FOREACH(wp, &w->panes, entry) {
1.3 nicm 51: if (!window_pane_visible(wp))
52: continue;
53:
1.1 nicm 54: /* Inside pane. */
55: if (px >= wp->xoff && px < wp->xoff + wp->sx &&
56: py >= wp->yoff && py < wp->yoff + wp->sy)
1.7 nicm 57: return (0);
1.1 nicm 58:
59: /* Left/right borders. */
1.7 nicm 60: if ((wp->yoff == 0 || py >= wp->yoff - 1) &&
61: py <= wp->yoff + wp->sy) {
1.1 nicm 62: if (wp->xoff != 0 && px == wp->xoff - 1)
1.7 nicm 63: return (1);
1.1 nicm 64: if (px == wp->xoff + wp->sx)
1.7 nicm 65: return (1);
1.1 nicm 66: }
67:
68: /* Top/bottom borders. */
1.7 nicm 69: if ((wp->xoff == 0 || px >= wp->xoff - 1) &&
70: px <= wp->xoff + wp->sx) {
1.1 nicm 71: if (wp->yoff != 0 && py == wp->yoff - 1)
1.7 nicm 72: return (1);
1.1 nicm 73: if (py == wp->yoff + wp->sy)
1.7 nicm 74: return (1);
75: }
76: }
77:
78: return (0);
79: }
80:
81: /* Check if cell inside a pane. */
82: int
83: screen_redraw_check_cell(struct client *c, u_int px, u_int py)
84: {
85: struct window *w = c->session->curw->window;
86: struct window_pane *wp;
87: int borders;
88:
89: if (px > w->sx || py > w->sy)
90: return (CELL_OUTSIDE);
91:
92: TAILQ_FOREACH(wp, &w->panes, entry) {
93: if (!window_pane_visible(wp))
94: continue;
95:
96: /* If outside the pane and its border, skip it. */
97: if ((wp->xoff != 0 && px < wp->xoff - 1) ||
98: px > wp->xoff + wp->sx ||
99: (wp->yoff != 0 && py < wp->yoff - 1) ||
100: py > wp->yoff + wp->sy)
101: continue;
102:
103: /* If definitely inside, return so. */
104: if (!screen_redraw_cell_border(c, px, py))
105: return (CELL_INSIDE);
106:
107: /*
108: * Construct a bitmask of whether the cells to the left (bit
109: * 4), right, top, and bottom (bit 1) of this cell are borders.
110: */
111: borders = 0;
112: if (px == 0 || screen_redraw_cell_border(c, px - 1, py))
113: borders |= 8;
114: if (px <= w->sx && screen_redraw_cell_border(c, px + 1, py))
115: borders |= 4;
116: if (py == 0 || screen_redraw_cell_border(c, px, py - 1))
117: borders |= 2;
118: if (py <= w->sy && screen_redraw_cell_border(c, px, py + 1))
119: borders |= 1;
120:
121: /*
122: * Figure out what kind of border this cell is. Only one bit
123: * set doesn't make sense (can't have a border cell with no
124: * others connected).
125: */
126: switch (borders) {
127: case 15: /* 1111, left right top bottom */
128: return (CELL_JOIN);
129: case 14: /* 1110, left right top */
130: return (CELL_BOTTOMJOIN);
131: case 13: /* 1101, left right bottom */
132: return (CELL_TOPJOIN);
133: case 12: /* 1100, left right */
134: return (CELL_TOPBOTTOM);
135: case 11: /* 1011, left top bottom */
136: return (CELL_RIGHTJOIN);
137: case 10: /* 1010, left top */
138: return (CELL_BOTTOMRIGHT);
139: case 9: /* 1001, left bottom */
140: return (CELL_TOPRIGHT);
141: case 7: /* 0111, right top bottom */
142: return (CELL_LEFTJOIN);
143: case 6: /* 0110, right top */
144: return (CELL_BOTTOMLEFT);
145: case 5: /* 0101, right bottom */
146: return (CELL_TOPLEFT);
147: case 3: /* 0011, top bottom */
148: return (CELL_LEFTRIGHT);
1.1 nicm 149: }
150: }
151:
1.6 nicm 152: return (CELL_OUTSIDE);
1.1 nicm 153: }
154:
1.4 nicm 155: /* Redraw entire screen. */
1.1 nicm 156: void
1.4 nicm 157: screen_redraw_screen(struct client *c, int status_only)
1.1 nicm 158: {
159: struct window *w = c->session->curw->window;
160: struct tty *tty = &c->tty;
161: struct window_pane *wp;
1.6 nicm 162: u_int i, j, type;
163: int status;
1.8 ! nicm 164: const u_char *base, *ptr;
! 165: u_char ch, border[20];
1.1 nicm 166:
167: /* Get status line, er, status. */
1.4 nicm 168: if (c->message_string != NULL || c->prompt_string != NULL)
169: status = 1;
170: else
171: status = options_get_number(&c->session->options, "status");
172:
173: /* If only drawing status and it is present, don't need the rest. */
174: if (status_only && status) {
175: tty_draw_line(tty, &c->status, 0, 0, tty->sy - 1);
176: return;
177: }
1.1 nicm 178:
1.6 nicm 179: /* Draw background and borders. */
180: tty_reset(tty);
1.8 ! nicm 181: strlcpy(border, " |-....--||+.", sizeof border);
1.1 nicm 182: if (tty_term_has(tty->term, TTYC_ACSC)) {
1.8 ! nicm 183: base = " xqlkmjwvtun~";
! 184: for (ptr = base; *ptr != '\0'; ptr++) {
! 185: if ((ch = tty_get_acs(tty, *ptr)) != '\0')
! 186: border[ptr - base] = ch;
! 187: }
1.1 nicm 188: tty_putcode(tty, TTYC_SMACS);
1.8 ! nicm 189: }
1.1 nicm 190: for (j = 0; j < tty->sy - status; j++) {
1.4 nicm 191: if (status_only && j != tty->sy - 1)
192: continue;
1.1 nicm 193: for (i = 0; i < tty->sx; i++) {
1.6 nicm 194: type = screen_redraw_check_cell(c, i, j);
195: if (type != CELL_INSIDE) {
1.1 nicm 196: tty_cursor(tty, i, j, 0, 0);
1.6 nicm 197: tty_putc(tty, border[type]);
1.1 nicm 198: }
199: }
200: }
1.6 nicm 201: tty_putcode(tty, TTYC_RMACS);
1.1 nicm 202:
203: /* Draw the panes. */
204: TAILQ_FOREACH(wp, &w->panes, entry) {
1.3 nicm 205: if (!window_pane_visible(wp))
1.1 nicm 206: continue;
1.4 nicm 207: for (i = 0; i < wp->sy; i++) {
1.5 nicm 208: if (status_only && wp->yoff + i != tty->sy - 1)
1.4 nicm 209: continue;
210: tty_draw_line(tty, wp->screen, i, wp->xoff, wp->yoff);
211: }
1.1 nicm 212: }
213:
214: /* Draw the status line. */
1.4 nicm 215: if (status)
216: tty_draw_line(tty, &c->status, 0, 0, tty->sy - 1);
1.1 nicm 217: }
218:
219: /* Draw a single pane. */
220: void
221: screen_redraw_pane(struct client *c, struct window_pane *wp)
222: {
223: u_int i;
224:
225: for (i = 0; i < wp->sy; i++)
226: tty_draw_line(&c->tty, wp->screen, i, wp->xoff, wp->yoff);
227: }
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