1 /* $Id: screen-redraw.c,v 1.1.1.2 2011/08/17 18:40:05 jmmv Exp $ */ 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 25 int screen_redraw_cell_border1(struct window_pane *, u_int, u_int); 26 int screen_redraw_cell_border(struct client *, u_int, u_int); 27 int screen_redraw_check_cell(struct client *, u_int, u_int); 28 void screen_redraw_draw_number(struct client *, struct window_pane *); 29 30 #define CELL_INSIDE 0 31 #define CELL_LEFTRIGHT 1 32 #define CELL_TOPBOTTOM 2 33 #define CELL_TOPLEFT 3 34 #define CELL_TOPRIGHT 4 35 #define CELL_BOTTOMLEFT 5 36 #define CELL_BOTTOMRIGHT 6 37 #define CELL_TOPJOIN 7 38 #define CELL_BOTTOMJOIN 8 39 #define CELL_LEFTJOIN 9 40 #define CELL_RIGHTJOIN 10 41 #define CELL_JOIN 11 42 #define CELL_OUTSIDE 12 43 44 #define CELL_BORDERS " xqlkmjwvtun~" 45 46 /* Check if cell is on the border of a particular pane. */ 47 int 48 screen_redraw_cell_border1(struct window_pane *wp, u_int px, u_int py) 49 { 50 /* Inside pane. */ 51 if (px >= wp->xoff && px < wp->xoff + wp->sx && 52 py >= wp->yoff && py < wp->yoff + wp->sy) 53 return (0); 54 55 /* Left/right borders. */ 56 if ((wp->yoff == 0 || py >= wp->yoff - 1) && py <= wp->yoff + wp->sy) { 57 if (wp->xoff != 0 && px == wp->xoff - 1) 58 return (1); 59 if (px == wp->xoff + wp->sx) 60 return (1); 61 } 62 63 /* Top/bottom borders. */ 64 if ((wp->xoff == 0 || px >= wp->xoff - 1) && px <= wp->xoff + wp->sx) { 65 if (wp->yoff != 0 && py == wp->yoff - 1) 66 return (1); 67 if (py == wp->yoff + wp->sy) 68 return (1); 69 } 70 71 /* Outside pane. */ 72 return (-1); 73 } 74 75 /* Check if a cell is on the pane border. */ 76 int 77 screen_redraw_cell_border(struct client *c, u_int px, u_int py) 78 { 79 struct window *w = c->session->curw->window; 80 struct window_pane *wp; 81 int retval; 82 83 /* Check all the panes. */ 84 TAILQ_FOREACH(wp, &w->panes, entry) { 85 if (!window_pane_visible(wp)) 86 continue; 87 if ((retval = screen_redraw_cell_border1(wp, px, py)) != -1) 88 return (retval); 89 } 90 91 return (0); 92 } 93 94 /* Check if cell inside a pane. */ 95 int 96 screen_redraw_check_cell(struct client *c, u_int px, u_int py) 97 { 98 struct window *w = c->session->curw->window; 99 struct window_pane *wp; 100 int borders; 101 102 if (px > w->sx || py > w->sy) 103 return (CELL_OUTSIDE); 104 105 TAILQ_FOREACH(wp, &w->panes, entry) { 106 if (!window_pane_visible(wp)) 107 continue; 108 109 /* If outside the pane and its border, skip it. */ 110 if ((wp->xoff != 0 && px < wp->xoff - 1) || 111 px > wp->xoff + wp->sx || 112 (wp->yoff != 0 && py < wp->yoff - 1) || 113 py > wp->yoff + wp->sy) 114 continue; 115 116 /* If definitely inside, return so. */ 117 if (!screen_redraw_cell_border(c, px, py)) 118 return (CELL_INSIDE); 119 120 /* 121 * Construct a bitmask of whether the cells to the left (bit 122 * 4), right, top, and bottom (bit 1) of this cell are borders. 123 */ 124 borders = 0; 125 if (px == 0 || screen_redraw_cell_border(c, px - 1, py)) 126 borders |= 8; 127 if (px <= w->sx && screen_redraw_cell_border(c, px + 1, py)) 128 borders |= 4; 129 if (py == 0 || screen_redraw_cell_border(c, px, py - 1)) 130 borders |= 2; 131 if (py <= w->sy && screen_redraw_cell_border(c, px, py + 1)) 132 borders |= 1; 133 134 /* 135 * Figure out what kind of border this cell is. Only one bit 136 * set doesn't make sense (can't have a border cell with no 137 * others connected). 138 */ 139 switch (borders) { 140 case 15: /* 1111, left right top bottom */ 141 return (CELL_JOIN); 142 case 14: /* 1110, left right top */ 143 return (CELL_BOTTOMJOIN); 144 case 13: /* 1101, left right bottom */ 145 return (CELL_TOPJOIN); 146 case 12: /* 1100, left right */ 147 return (CELL_TOPBOTTOM); 148 case 11: /* 1011, left top bottom */ 149 return (CELL_RIGHTJOIN); 150 case 10: /* 1010, left top */ 151 return (CELL_BOTTOMRIGHT); 152 case 9: /* 1001, left bottom */ 153 return (CELL_TOPRIGHT); 154 case 7: /* 0111, right top bottom */ 155 return (CELL_LEFTJOIN); 156 case 6: /* 0110, right top */ 157 return (CELL_BOTTOMLEFT); 158 case 5: /* 0101, right bottom */ 159 return (CELL_TOPLEFT); 160 case 3: /* 0011, top bottom */ 161 return (CELL_LEFTRIGHT); 162 } 163 } 164 165 return (CELL_OUTSIDE); 166 } 167 168 /* Redraw entire screen. */ 169 void 170 screen_redraw_screen(struct client *c, int status_only, int borders_only) 171 { 172 struct window *w = c->session->curw->window; 173 struct tty *tty = &c->tty; 174 struct window_pane *wp; 175 struct grid_cell active_gc, other_gc; 176 u_int i, j, type; 177 int status, fg, bg; 178 179 /* Suspended clients should not be updated. */ 180 if (c->flags & CLIENT_SUSPENDED) 181 return; 182 183 /* Get status line, er, status. */ 184 if (c->message_string != NULL || c->prompt_string != NULL) 185 status = 1; 186 else 187 status = options_get_number(&c->session->options, "status"); 188 189 /* If only drawing status and it is present, don't need the rest. */ 190 if (status_only && status) { 191 tty_draw_line(tty, &c->status, 0, 0, tty->sy - 1); 192 tty_reset(tty); 193 return; 194 } 195 196 /* Set up pane border attributes. */ 197 memcpy(&other_gc, &grid_default_cell, sizeof other_gc); 198 memcpy(&active_gc, &grid_default_cell, sizeof active_gc); 199 active_gc.data = other_gc.data = 'x'; /* not space */ 200 active_gc.attr = other_gc.attr = GRID_ATTR_CHARSET; 201 fg = options_get_number(&c->session->options, "pane-border-fg"); 202 colour_set_fg(&other_gc, fg); 203 bg = options_get_number(&c->session->options, "pane-border-bg"); 204 colour_set_bg(&other_gc, bg); 205 fg = options_get_number(&c->session->options, "pane-active-border-fg"); 206 colour_set_fg(&active_gc, fg); 207 bg = options_get_number(&c->session->options, "pane-active-border-bg"); 208 colour_set_bg(&active_gc, bg); 209 210 /* Draw background and borders. */ 211 for (j = 0; j < tty->sy - status; j++) { 212 if (status_only && j != tty->sy - 1) 213 continue; 214 for (i = 0; i < tty->sx; i++) { 215 type = screen_redraw_check_cell(c, i, j); 216 if (type == CELL_INSIDE) 217 continue; 218 if (screen_redraw_cell_border1(w->active, i, j) == 1) 219 tty_attributes(tty, &active_gc); 220 else 221 tty_attributes(tty, &other_gc); 222 tty_cursor(tty, i, j); 223 tty_putc(tty, CELL_BORDERS[type]); 224 } 225 } 226 227 /* If only drawing borders, that's it. */ 228 if (borders_only) 229 return; 230 231 /* Draw the panes, if necessary. */ 232 TAILQ_FOREACH(wp, &w->panes, entry) { 233 if (!window_pane_visible(wp)) 234 continue; 235 for (i = 0; i < wp->sy; i++) { 236 if (status_only && wp->yoff + i != tty->sy - 1) 237 continue; 238 tty_draw_line(tty, wp->screen, i, wp->xoff, wp->yoff); 239 } 240 if (c->flags & CLIENT_IDENTIFY) 241 screen_redraw_draw_number(c, wp); 242 } 243 244 /* Draw the status line. */ 245 if (status) 246 tty_draw_line(tty, &c->status, 0, 0, tty->sy - 1); 247 tty_reset(tty); 248 } 249 250 /* Draw a single pane. */ 251 void 252 screen_redraw_pane(struct client *c, struct window_pane *wp) 253 { 254 u_int i; 255 256 for (i = 0; i < wp->sy; i++) 257 tty_draw_line(&c->tty, wp->screen, i, wp->xoff, wp->yoff); 258 tty_reset(&c->tty); 259 } 260 261 /* Draw number on a pane. */ 262 void 263 screen_redraw_draw_number(struct client *c, struct window_pane *wp) 264 { 265 struct tty *tty = &c->tty; 266 struct session *s = c->session; 267 struct options *oo = &s->options; 268 struct window *w = wp->window; 269 struct grid_cell gc; 270 u_int idx, px, py, i, j, xoff, yoff; 271 int colour, active_colour; 272 char buf[16], *ptr; 273 size_t len; 274 275 idx = window_pane_index(w, wp); 276 len = xsnprintf(buf, sizeof buf, "%u", idx); 277 278 if (wp->sx < len) 279 return; 280 colour = options_get_number(oo, "display-panes-colour"); 281 active_colour = options_get_number(oo, "display-panes-active-colour"); 282 283 px = wp->sx / 2; py = wp->sy / 2; 284 xoff = wp->xoff; yoff = wp->yoff; 285 286 if (wp->sx < len * 6 || wp->sy < 5) { 287 tty_cursor(tty, xoff + px - len / 2, yoff + py); 288 memcpy(&gc, &grid_default_cell, sizeof gc); 289 gc.data = '_'; /* not space */ 290 if (w->active == wp) 291 colour_set_fg(&gc, active_colour); 292 else 293 colour_set_fg(&gc, colour); 294 tty_attributes(tty, &gc); 295 tty_puts(tty, buf); 296 return; 297 } 298 299 px -= len * 3; 300 py -= 2; 301 302 memcpy(&gc, &grid_default_cell, sizeof gc); 303 gc.data = '_'; /* not space */ 304 if (w->active == wp) 305 colour_set_bg(&gc, active_colour); 306 else 307 colour_set_bg(&gc, colour); 308 tty_attributes(tty, &gc); 309 for (ptr = buf; *ptr != '\0'; ptr++) { 310 if (*ptr < '0' || *ptr > '9') 311 continue; 312 idx = *ptr - '0'; 313 314 for (j = 0; j < 5; j++) { 315 for (i = px; i < px + 5; i++) { 316 tty_cursor(tty, xoff + i, yoff + py + j); 317 if (clock_table[idx][j][i - px]) 318 tty_putc(tty, ' '); 319 } 320 } 321 px += 6; 322 } 323 } 324