1 /* $OpenBSD: screen-redraw.c,v 1.82 2020/12/07 09:46:58 nicm Exp $ */ 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 CELL_INSIDE 0 35 #define CELL_LEFTRIGHT 1 36 #define CELL_TOPBOTTOM 2 37 #define CELL_TOPLEFT 3 38 #define CELL_TOPRIGHT 4 39 #define CELL_BOTTOMLEFT 5 40 #define CELL_BOTTOMRIGHT 6 41 #define CELL_TOPJOIN 7 42 #define CELL_BOTTOMJOIN 8 43 #define CELL_LEFTJOIN 9 44 #define CELL_RIGHTJOIN 10 45 #define CELL_JOIN 11 46 #define CELL_OUTSIDE 12 47 48 #define CELL_BORDERS " xqlkmjwvtun~" 49 50 static const struct utf8_data screen_redraw_double_borders[] = { 51 { "", 0, 0, 0 }, 52 { "\342\225\221", 0, 3, 1 }, /* U+2551 */ 53 { "\342\225\220", 0, 3, 1 }, /* U+2550 */ 54 { "\342\225\224", 0, 3, 1 }, /* U+2554 */ 55 { "\342\225\227", 0, 3, 1 }, /* U+2557 */ 56 { "\342\225\232", 0, 3, 1 }, /* U+255A */ 57 { "\342\225\235", 0, 3, 1 }, /* U+255D */ 58 { "\342\225\246", 0, 3, 1 }, /* U+2566 */ 59 { "\342\225\251", 0, 3, 1 }, /* U+2569 */ 60 { "\342\225\240", 0, 3, 1 }, /* U+2560 */ 61 { "\342\225\243", 0, 3, 1 }, /* U+2563 */ 62 { "\342\225\254", 0, 3, 1 }, /* U+256C */ 63 { "\302\267", 0, 2, 1 } /* U+00B7 */ 64 }; 65 66 static const struct utf8_data screen_redraw_heavy_borders[] = { 67 { "", 0, 0, 0 }, 68 { "\342\224\203", 0, 3, 1 }, /* U+2503 */ 69 { "\342\224\201", 0, 3, 1 }, /* U+2501 */ 70 { "\342\224\223", 0, 3, 1 }, /* U+2513 */ 71 { "\342\224\217", 0, 3, 1 }, /* U+250F */ 72 { "\342\224\227", 0, 3, 1 }, /* U+2517 */ 73 { "\342\224\233", 0, 3, 1 }, /* U+251B */ 74 { "\342\224\263", 0, 3, 1 }, /* U+2533 */ 75 { "\342\224\273", 0, 3, 1 }, /* U+253B */ 76 { "\342\224\243", 0, 3, 1 }, /* U+2523 */ 77 { "\342\224\253", 0, 3, 1 }, /* U+252B */ 78 { "\342\225\213", 0, 3, 1 }, /* U+254B */ 79 { "\302\267", 0, 2, 1 } /* U+00B7 */ 80 }; 81 82 enum screen_redraw_border_type { 83 SCREEN_REDRAW_OUTSIDE, 84 SCREEN_REDRAW_INSIDE, 85 SCREEN_REDRAW_BORDER 86 }; 87 88 /* Get cell border character. */ 89 static void 90 screen_redraw_border_set(struct window_pane *wp, int pane_lines, int cell_type, 91 struct grid_cell *gc) 92 { 93 u_int idx; 94 95 switch (pane_lines) { 96 case PANE_LINES_NUMBER: 97 if (cell_type == CELL_OUTSIDE) { 98 gc->attr |= GRID_ATTR_CHARSET; 99 utf8_set(&gc->data, CELL_BORDERS[CELL_OUTSIDE]); 100 break; 101 } 102 gc->attr &= ~GRID_ATTR_CHARSET; 103 if (wp != NULL && window_pane_index(wp, &idx) == 0) 104 utf8_set(&gc->data, '0' + (idx % 10)); 105 else 106 utf8_set(&gc->data, '*'); 107 break; 108 case PANE_LINES_DOUBLE: 109 gc->attr &= ~GRID_ATTR_CHARSET; 110 utf8_copy(&gc->data, &screen_redraw_double_borders[cell_type]); 111 break; 112 case PANE_LINES_HEAVY: 113 gc->attr &= ~GRID_ATTR_CHARSET; 114 utf8_copy(&gc->data, &screen_redraw_heavy_borders[cell_type]); 115 break; 116 case PANE_LINES_SIMPLE: 117 gc->attr &= ~GRID_ATTR_CHARSET; 118 utf8_set(&gc->data, " |-+++++++++."[cell_type]); 119 break; 120 default: 121 gc->attr |= GRID_ATTR_CHARSET; 122 utf8_set(&gc->data, CELL_BORDERS[cell_type]); 123 break; 124 } 125 } 126 127 /* Return if window has only two panes. */ 128 static int 129 screen_redraw_two_panes(struct window *w, int direction) 130 { 131 struct window_pane *wp; 132 133 wp = TAILQ_NEXT(TAILQ_FIRST(&w->panes), entry); 134 if (wp == NULL) 135 return (0); /* one pane */ 136 if (TAILQ_NEXT(wp, entry) != NULL) 137 return (0); /* more than two panes */ 138 if (direction == 0 && wp->xoff == 0) 139 return (0); 140 if (direction == 1 && wp->yoff == 0) 141 return (0); 142 return (1); 143 } 144 145 /* Check if cell is on the border of a pane. */ 146 static enum screen_redraw_border_type 147 screen_redraw_pane_border(struct window_pane *wp, u_int px, u_int py, 148 int pane_status) 149 { 150 u_int ex = wp->xoff + wp->sx, ey = wp->yoff + wp->sy; 151 152 /* Inside pane. */ 153 if (px >= wp->xoff && px < ex && py >= wp->yoff && py < ey) 154 return (SCREEN_REDRAW_INSIDE); 155 156 /* Left/right borders. */ 157 if (pane_status == PANE_STATUS_OFF) { 158 if (screen_redraw_two_panes(wp->window, 0)) { 159 if (wp->xoff == 0 && px == wp->sx && py <= wp->sy / 2) 160 return (SCREEN_REDRAW_BORDER); 161 if (wp->xoff != 0 && 162 px == wp->xoff - 1 && 163 py > wp->sy / 2) 164 return (SCREEN_REDRAW_BORDER); 165 } else { 166 if ((wp->yoff == 0 || py >= wp->yoff - 1) && py <= ey) { 167 if (wp->xoff != 0 && px == wp->xoff - 1) 168 return (SCREEN_REDRAW_BORDER); 169 if (px == ex) 170 return (SCREEN_REDRAW_BORDER); 171 } 172 } 173 } else { 174 if ((wp->yoff == 0 || py >= wp->yoff - 1) && py <= ey) { 175 if (wp->xoff != 0 && px == wp->xoff - 1) 176 return (SCREEN_REDRAW_BORDER); 177 if (px == ex) 178 return (SCREEN_REDRAW_BORDER); 179 } 180 } 181 182 /* Top/bottom borders. */ 183 if (pane_status == PANE_STATUS_OFF) { 184 if (screen_redraw_two_panes(wp->window, 1)) { 185 if (wp->yoff == 0 && py == wp->sy && px <= wp->sx / 2) 186 return (SCREEN_REDRAW_BORDER); 187 if (wp->yoff != 0 && 188 py == wp->yoff - 1 && 189 px > wp->sx / 2) 190 return (SCREEN_REDRAW_BORDER); 191 } else { 192 if ((wp->xoff == 0 || px >= wp->xoff - 1) && px <= ex) { 193 if (wp->yoff != 0 && py == wp->yoff - 1) 194 return (SCREEN_REDRAW_BORDER); 195 if (py == ey) 196 return (SCREEN_REDRAW_BORDER); 197 } 198 } 199 } else if (pane_status == PANE_STATUS_TOP) { 200 if ((wp->xoff == 0 || px >= wp->xoff - 1) && px <= ex) { 201 if (wp->yoff != 0 && py == wp->yoff - 1) 202 return (SCREEN_REDRAW_BORDER); 203 } 204 } else { 205 if ((wp->xoff == 0 || px >= wp->xoff - 1) && px <= ex) { 206 if (py == ey) 207 return (SCREEN_REDRAW_BORDER); 208 } 209 } 210 211 /* Outside pane. */ 212 return (SCREEN_REDRAW_OUTSIDE); 213 } 214 215 /* Check if a cell is on a border. */ 216 static int 217 screen_redraw_cell_border(struct client *c, u_int px, u_int py, int pane_status) 218 { 219 struct window *w = c->session->curw->window; 220 struct window_pane *wp; 221 222 /* Outside the window? */ 223 if (px > w->sx || py > w->sy) 224 return (0); 225 226 /* On the window border? */ 227 if (px == w->sx || py == w->sy) 228 return (1); 229 230 /* Check all the panes. */ 231 TAILQ_FOREACH(wp, &w->panes, entry) { 232 if (!window_pane_visible(wp)) 233 continue; 234 switch (screen_redraw_pane_border(wp, px, py, pane_status)) { 235 case SCREEN_REDRAW_INSIDE: 236 return (0); 237 case SCREEN_REDRAW_BORDER: 238 return (1); 239 case SCREEN_REDRAW_OUTSIDE: 240 break; 241 } 242 } 243 244 return (0); 245 } 246 247 /* Work out type of border cell from surrounding cells. */ 248 static int 249 screen_redraw_type_of_cell(struct client *c, u_int px, u_int py, 250 int pane_status) 251 { 252 struct window *w = c->session->curw->window; 253 u_int sx = w->sx, sy = w->sy; 254 int borders = 0; 255 256 /* Is this outside the window? */ 257 if (px > sx || py > sy) 258 return (CELL_OUTSIDE); 259 260 /* 261 * Construct a bitmask of whether the cells to the left (bit 4), right, 262 * top, and bottom (bit 1) of this cell are borders. 263 */ 264 if (px == 0 || screen_redraw_cell_border(c, px - 1, py, pane_status)) 265 borders |= 8; 266 if (px <= sx && screen_redraw_cell_border(c, px + 1, py, pane_status)) 267 borders |= 4; 268 if (pane_status == PANE_STATUS_TOP) { 269 if (py != 0 && 270 screen_redraw_cell_border(c, px, py - 1, pane_status)) 271 borders |= 2; 272 if (screen_redraw_cell_border(c, px, py + 1, pane_status)) 273 borders |= 1; 274 } else if (pane_status == PANE_STATUS_BOTTOM) { 275 if (py == 0 || 276 screen_redraw_cell_border(c, px, py - 1, pane_status)) 277 borders |= 2; 278 if (py != sy - 1 && 279 screen_redraw_cell_border(c, px, py + 1, pane_status)) 280 borders |= 1; 281 } else { 282 if (py == 0 || 283 screen_redraw_cell_border(c, px, py - 1, pane_status)) 284 borders |= 2; 285 if (screen_redraw_cell_border(c, px, py + 1, pane_status)) 286 borders |= 1; 287 } 288 289 /* 290 * Figure out what kind of border this cell is. Only one bit set 291 * doesn't make sense (can't have a border cell with no others 292 * connected). 293 */ 294 switch (borders) { 295 case 15: /* 1111, left right top bottom */ 296 return (CELL_JOIN); 297 case 14: /* 1110, left right top */ 298 return (CELL_BOTTOMJOIN); 299 case 13: /* 1101, left right bottom */ 300 return (CELL_TOPJOIN); 301 case 12: /* 1100, left right */ 302 return (CELL_TOPBOTTOM); 303 case 11: /* 1011, left top bottom */ 304 return (CELL_RIGHTJOIN); 305 case 10: /* 1010, left top */ 306 return (CELL_BOTTOMRIGHT); 307 case 9: /* 1001, left bottom */ 308 return (CELL_TOPRIGHT); 309 case 7: /* 0111, right top bottom */ 310 return (CELL_LEFTJOIN); 311 case 6: /* 0110, right top */ 312 return (CELL_BOTTOMLEFT); 313 case 5: /* 0101, right bottom */ 314 return (CELL_TOPLEFT); 315 case 3: /* 0011, top bottom */ 316 return (CELL_LEFTRIGHT); 317 } 318 return (CELL_OUTSIDE); 319 } 320 321 /* Check if cell inside a pane. */ 322 static int 323 screen_redraw_check_cell(struct client *c, u_int px, u_int py, int pane_status, 324 struct window_pane **wpp) 325 { 326 struct window *w = c->session->curw->window; 327 struct window_pane *wp, *active; 328 int border; 329 u_int right, line; 330 331 *wpp = NULL; 332 333 if (px > w->sx || py > w->sy) 334 return (CELL_OUTSIDE); 335 if (px == w->sx || py == w->sy) /* window border */ 336 return (screen_redraw_type_of_cell(c, px, py, pane_status)); 337 338 if (pane_status != PANE_STATUS_OFF) { 339 active = wp = server_client_get_pane(c); 340 do { 341 if (!window_pane_visible(wp)) 342 goto next1; 343 344 if (pane_status == PANE_STATUS_TOP) 345 line = wp->yoff - 1; 346 else 347 line = wp->yoff + wp->sy; 348 right = wp->xoff + 2 + wp->status_size - 1; 349 350 if (py == line && px >= wp->xoff + 2 && px <= right) 351 return (CELL_INSIDE); 352 353 next1: 354 wp = TAILQ_NEXT(wp, entry); 355 if (wp == NULL) 356 wp = TAILQ_FIRST(&w->panes); 357 } while (wp != active); 358 } 359 360 active = wp = server_client_get_pane(c); 361 do { 362 if (!window_pane_visible(wp)) 363 goto next2; 364 *wpp = wp; 365 366 /* 367 * If definitely inside, return. If not on border, skip. 368 * Otherwise work out the cell. 369 */ 370 border = screen_redraw_pane_border(wp, px, py, pane_status); 371 if (border == SCREEN_REDRAW_INSIDE) 372 return (CELL_INSIDE); 373 if (border == SCREEN_REDRAW_OUTSIDE) 374 goto next2; 375 return (screen_redraw_type_of_cell(c, px, py, pane_status)); 376 377 next2: 378 wp = TAILQ_NEXT(wp, entry); 379 if (wp == NULL) 380 wp = TAILQ_FIRST(&w->panes); 381 } while (wp != active); 382 383 return (CELL_OUTSIDE); 384 } 385 386 /* Check if the border of a particular pane. */ 387 static int 388 screen_redraw_check_is(u_int px, u_int py, int pane_status, 389 struct window_pane *wp) 390 { 391 enum screen_redraw_border_type border; 392 393 border = screen_redraw_pane_border(wp, px, py, pane_status); 394 if (border == SCREEN_REDRAW_BORDER) 395 return (1); 396 return (0); 397 } 398 399 /* Update pane status. */ 400 static int 401 screen_redraw_make_pane_status(struct client *c, struct window_pane *wp, 402 struct screen_redraw_ctx *rctx, int pane_lines) 403 { 404 struct window *w = wp->window; 405 struct grid_cell gc; 406 const char *fmt; 407 struct format_tree *ft; 408 char *expanded; 409 int pane_status = rctx->pane_status; 410 u_int width, i, cell_type, px, py; 411 struct screen_write_ctx ctx; 412 struct screen old; 413 414 ft = format_create(c, NULL, FORMAT_PANE|wp->id, FORMAT_STATUS); 415 format_defaults(ft, c, c->session, c->session->curw, wp); 416 417 if (wp == server_client_get_pane(c)) 418 style_apply(&gc, w->options, "pane-active-border-style", ft); 419 else 420 style_apply(&gc, w->options, "pane-border-style", ft); 421 fmt = options_get_string(w->options, "pane-border-format"); 422 423 expanded = format_expand_time(ft, fmt); 424 if (wp->sx < 4) 425 wp->status_size = width = 0; 426 else 427 wp->status_size = width = wp->sx - 4; 428 429 memcpy(&old, &wp->status_screen, sizeof old); 430 screen_init(&wp->status_screen, width, 1, 0); 431 wp->status_screen.mode = 0; 432 433 screen_write_start(&ctx, &wp->status_screen); 434 435 for (i = 0; i < width; i++) { 436 px = wp->xoff + 2 + i; 437 if (rctx->pane_status == PANE_STATUS_TOP) 438 py = wp->yoff - 1; 439 else 440 py = wp->yoff + wp->sy; 441 cell_type = screen_redraw_type_of_cell(c, px, py, pane_status); 442 screen_redraw_border_set(wp, pane_lines, cell_type, &gc); 443 screen_write_cell(&ctx, &gc); 444 } 445 gc.attr &= ~GRID_ATTR_CHARSET; 446 447 screen_write_cursormove(&ctx, 0, 0, 0); 448 format_draw(&ctx, &gc, width, expanded, NULL); 449 screen_write_stop(&ctx); 450 451 free(expanded); 452 format_free(ft); 453 454 if (grid_compare(wp->status_screen.grid, old.grid) == 0) { 455 screen_free(&old); 456 return (0); 457 } 458 screen_free(&old); 459 return (1); 460 } 461 462 /* Draw pane status. */ 463 static void 464 screen_redraw_draw_pane_status(struct screen_redraw_ctx *ctx) 465 { 466 struct client *c = ctx->c; 467 struct window *w = c->session->curw->window; 468 struct tty *tty = &c->tty; 469 struct window_pane *wp; 470 struct screen *s; 471 u_int i, x, width, xoff, yoff, size; 472 473 log_debug("%s: %s @%u", __func__, c->name, w->id); 474 475 TAILQ_FOREACH(wp, &w->panes, entry) { 476 if (!window_pane_visible(wp)) 477 continue; 478 s = &wp->status_screen; 479 480 size = wp->status_size; 481 if (ctx->pane_status == PANE_STATUS_TOP) 482 yoff = wp->yoff - 1; 483 else 484 yoff = wp->yoff + wp->sy; 485 xoff = wp->xoff + 2; 486 487 if (xoff + size <= ctx->ox || 488 xoff >= ctx->ox + ctx->sx || 489 yoff < ctx->oy || 490 yoff >= ctx->oy + ctx->sy) 491 continue; 492 493 if (xoff >= ctx->ox && xoff + size <= ctx->ox + ctx->sx) { 494 /* All visible. */ 495 i = 0; 496 x = xoff - ctx->ox; 497 width = size; 498 } else if (xoff < ctx->ox && xoff + size > ctx->ox + ctx->sx) { 499 /* Both left and right not visible. */ 500 i = ctx->ox; 501 x = 0; 502 width = ctx->sx; 503 } else if (xoff < ctx->ox) { 504 /* Left not visible. */ 505 i = ctx->ox - xoff; 506 x = 0; 507 width = size - i; 508 } else { 509 /* Right not visible. */ 510 i = 0; 511 x = xoff - ctx->ox; 512 width = size - x; 513 } 514 515 if (ctx->statustop) 516 yoff += ctx->statuslines; 517 tty_draw_line(tty, s, i, 0, width, x, yoff - ctx->oy, 518 &grid_default_cell, NULL); 519 } 520 tty_cursor(tty, 0, 0); 521 } 522 523 /* Update status line and change flags if unchanged. */ 524 static int 525 screen_redraw_update(struct client *c, int flags) 526 { 527 struct window *w = c->session->curw->window; 528 struct window_pane *wp; 529 struct options *wo = w->options; 530 int redraw, lines; 531 struct screen_redraw_ctx ctx; 532 533 if (c->message_string != NULL) 534 redraw = status_message_redraw(c); 535 else if (c->prompt_string != NULL) 536 redraw = status_prompt_redraw(c); 537 else 538 redraw = status_redraw(c); 539 if (!redraw && (~flags & CLIENT_REDRAWSTATUSALWAYS)) 540 flags &= ~CLIENT_REDRAWSTATUS; 541 542 if (c->overlay_draw != NULL) 543 flags |= CLIENT_REDRAWOVERLAY; 544 545 if (options_get_number(wo, "pane-border-status") != PANE_STATUS_OFF) { 546 screen_redraw_set_context(c, &ctx); 547 lines = options_get_number(wo, "pane-border-lines"); 548 redraw = 0; 549 TAILQ_FOREACH(wp, &w->panes, entry) { 550 if (screen_redraw_make_pane_status(c, wp, &ctx, lines)) 551 redraw = 1; 552 } 553 if (redraw) 554 flags |= CLIENT_REDRAWBORDERS; 555 } 556 return (flags); 557 } 558 559 /* Set up redraw context. */ 560 static void 561 screen_redraw_set_context(struct client *c, struct screen_redraw_ctx *ctx) 562 { 563 struct session *s = c->session; 564 struct options *oo = s->options; 565 struct window *w = s->curw->window; 566 struct options *wo = w->options; 567 u_int lines; 568 569 memset(ctx, 0, sizeof *ctx); 570 ctx->c = c; 571 572 lines = status_line_size(c); 573 if (c->message_string != NULL || c->prompt_string != NULL) 574 lines = (lines == 0) ? 1 : lines; 575 if (lines != 0 && options_get_number(oo, "status-position") == 0) 576 ctx->statustop = 1; 577 ctx->statuslines = lines; 578 579 ctx->pane_status = options_get_number(wo, "pane-border-status"); 580 ctx->pane_lines = options_get_number(wo, "pane-border-lines"); 581 582 tty_window_offset(&c->tty, &ctx->ox, &ctx->oy, &ctx->sx, &ctx->sy); 583 584 log_debug("%s: %s @%u ox=%u oy=%u sx=%u sy=%u %u/%d", __func__, c->name, 585 w->id, ctx->ox, ctx->oy, ctx->sx, ctx->sy, ctx->statuslines, 586 ctx->statustop); 587 } 588 589 /* Redraw entire screen. */ 590 void 591 screen_redraw_screen(struct client *c) 592 { 593 struct screen_redraw_ctx ctx; 594 int flags; 595 596 if (c->flags & CLIENT_SUSPENDED) 597 return; 598 599 flags = screen_redraw_update(c, c->flags); 600 if ((flags & CLIENT_ALLREDRAWFLAGS) == 0) 601 return; 602 603 screen_redraw_set_context(c, &ctx); 604 tty_update_mode(&c->tty, c->tty.mode, NULL); 605 tty_sync_start(&c->tty); 606 607 if (flags & (CLIENT_REDRAWWINDOW|CLIENT_REDRAWBORDERS)) { 608 log_debug("%s: redrawing borders", c->name); 609 if (ctx.pane_status != PANE_STATUS_OFF) 610 screen_redraw_draw_pane_status(&ctx); 611 screen_redraw_draw_borders(&ctx); 612 } 613 if (flags & CLIENT_REDRAWWINDOW) { 614 log_debug("%s: redrawing panes", c->name); 615 screen_redraw_draw_panes(&ctx); 616 } 617 if (ctx.statuslines != 0 && 618 (flags & (CLIENT_REDRAWSTATUS|CLIENT_REDRAWSTATUSALWAYS))) { 619 log_debug("%s: redrawing status", c->name); 620 screen_redraw_draw_status(&ctx); 621 } 622 if (c->overlay_draw != NULL && (flags & CLIENT_REDRAWOVERLAY)) { 623 log_debug("%s: redrawing overlay", c->name); 624 c->overlay_draw(c, &ctx); 625 } 626 627 tty_reset(&c->tty); 628 } 629 630 /* Redraw a single pane. */ 631 void 632 screen_redraw_pane(struct client *c, struct window_pane *wp) 633 { 634 struct screen_redraw_ctx ctx; 635 636 if (c->overlay_draw != NULL || !window_pane_visible(wp)) 637 return; 638 639 screen_redraw_set_context(c, &ctx); 640 tty_update_mode(&c->tty, c->tty.mode, NULL); 641 tty_sync_start(&c->tty); 642 643 screen_redraw_draw_pane(&ctx, wp); 644 645 tty_reset(&c->tty); 646 } 647 648 /* Get border cell style. */ 649 static const struct grid_cell * 650 screen_redraw_draw_borders_style(struct screen_redraw_ctx *ctx, u_int x, 651 u_int y, struct window_pane *wp) 652 { 653 struct client *c = ctx->c; 654 struct session *s = c->session; 655 struct window *w = s->curw->window; 656 struct window_pane *active = server_client_get_pane(c); 657 struct options *oo = w->options; 658 struct format_tree *ft; 659 660 if (wp->border_gc_set) 661 return (&wp->border_gc); 662 wp->border_gc_set = 1; 663 664 ft = format_create_defaults(NULL, c, s, s->curw, wp); 665 if (screen_redraw_check_is(x, y, ctx->pane_status, active)) 666 style_apply(&wp->border_gc, oo, "pane-active-border-style", ft); 667 else 668 style_apply(&wp->border_gc, oo, "pane-border-style", ft); 669 format_free(ft); 670 671 return (&wp->border_gc); 672 } 673 674 /* Draw a border cell. */ 675 static void 676 screen_redraw_draw_borders_cell(struct screen_redraw_ctx *ctx, u_int i, u_int j) 677 { 678 struct client *c = ctx->c; 679 struct session *s = c->session; 680 struct tty *tty = &c->tty; 681 struct window_pane *wp; 682 u_int cell_type, x = ctx->ox + i, y = ctx->oy + j; 683 int pane_status = ctx->pane_status; 684 struct grid_cell gc; 685 const struct grid_cell *tmp; 686 687 if (c->overlay_check != NULL && !c->overlay_check(c, x, y)) 688 return; 689 690 cell_type = screen_redraw_check_cell(c, x, y, pane_status, &wp); 691 if (cell_type == CELL_INSIDE) 692 return; 693 694 if (wp == NULL) 695 memcpy(&gc, &grid_default_cell, sizeof gc); 696 else { 697 tmp = screen_redraw_draw_borders_style(ctx, x, y, wp); 698 if (tmp == NULL) 699 return; 700 memcpy(&gc, tmp, sizeof gc); 701 702 if (server_is_marked(s, s->curw, marked_pane.wp) && 703 screen_redraw_check_is(x, y, pane_status, marked_pane.wp)) 704 gc.attr ^= GRID_ATTR_REVERSE; 705 } 706 screen_redraw_border_set(wp, ctx->pane_lines, cell_type, &gc); 707 708 if (ctx->statustop) 709 tty_cursor(tty, i, ctx->statuslines + j); 710 else 711 tty_cursor(tty, i, j); 712 tty_cell(tty, &gc, &grid_default_cell, NULL); 713 } 714 715 /* Draw the borders. */ 716 static void 717 screen_redraw_draw_borders(struct screen_redraw_ctx *ctx) 718 { 719 struct client *c = ctx->c; 720 struct session *s = c->session; 721 struct window *w = s->curw->window; 722 struct window_pane *wp; 723 u_int i, j; 724 725 log_debug("%s: %s @%u", __func__, c->name, w->id); 726 727 TAILQ_FOREACH(wp, &w->panes, entry) 728 wp->border_gc_set = 0; 729 730 for (j = 0; j < c->tty.sy - ctx->statuslines; j++) { 731 for (i = 0; i < c->tty.sx; i++) 732 screen_redraw_draw_borders_cell(ctx, i, j); 733 } 734 } 735 736 /* Draw the panes. */ 737 static void 738 screen_redraw_draw_panes(struct screen_redraw_ctx *ctx) 739 { 740 struct client *c = ctx->c; 741 struct window *w = c->session->curw->window; 742 struct window_pane *wp; 743 744 log_debug("%s: %s @%u", __func__, c->name, w->id); 745 746 TAILQ_FOREACH(wp, &w->panes, entry) { 747 if (window_pane_visible(wp)) 748 screen_redraw_draw_pane(ctx, wp); 749 } 750 } 751 752 /* Draw the status line. */ 753 static void 754 screen_redraw_draw_status(struct screen_redraw_ctx *ctx) 755 { 756 struct client *c = ctx->c; 757 struct window *w = c->session->curw->window; 758 struct tty *tty = &c->tty; 759 struct screen *s = c->status.active; 760 u_int i, y; 761 762 log_debug("%s: %s @%u", __func__, c->name, w->id); 763 764 if (ctx->statustop) 765 y = 0; 766 else 767 y = c->tty.sy - ctx->statuslines; 768 for (i = 0; i < ctx->statuslines; i++) { 769 tty_draw_line(tty, s, 0, i, UINT_MAX, 0, y + i, 770 &grid_default_cell, NULL); 771 } 772 } 773 774 /* Draw one pane. */ 775 static void 776 screen_redraw_draw_pane(struct screen_redraw_ctx *ctx, struct window_pane *wp) 777 { 778 struct client *c = ctx->c; 779 struct window *w = c->session->curw->window; 780 struct tty *tty = &c->tty; 781 struct screen *s; 782 struct grid_cell defaults; 783 u_int i, j, top, x, y, width; 784 785 log_debug("%s: %s @%u %%%u", __func__, c->name, w->id, wp->id); 786 787 if (wp->xoff + wp->sx <= ctx->ox || wp->xoff >= ctx->ox + ctx->sx) 788 return; 789 if (ctx->statustop) 790 top = ctx->statuslines; 791 else 792 top = 0; 793 794 s = wp->screen; 795 for (j = 0; j < wp->sy; j++) { 796 if (wp->yoff + j < ctx->oy || wp->yoff + j >= ctx->oy + ctx->sy) 797 continue; 798 y = top + wp->yoff + j - ctx->oy; 799 800 if (wp->xoff >= ctx->ox && 801 wp->xoff + wp->sx <= ctx->ox + ctx->sx) { 802 /* All visible. */ 803 i = 0; 804 x = wp->xoff - ctx->ox; 805 width = wp->sx; 806 } else if (wp->xoff < ctx->ox && 807 wp->xoff + wp->sx > ctx->ox + ctx->sx) { 808 /* Both left and right not visible. */ 809 i = ctx->ox; 810 x = 0; 811 width = ctx->sx; 812 } else if (wp->xoff < ctx->ox) { 813 /* Left not visible. */ 814 i = ctx->ox - wp->xoff; 815 x = 0; 816 width = wp->sx - i; 817 } else { 818 /* Right not visible. */ 819 i = 0; 820 x = wp->xoff - ctx->ox; 821 width = ctx->sx - x; 822 } 823 log_debug("%s: %s %%%u line %u,%u at %u,%u, width %u", 824 __func__, c->name, wp->id, i, j, x, y, width); 825 826 tty_default_colours(&defaults, wp); 827 tty_draw_line(tty, s, i, j, width, x, y, &defaults, 828 wp->palette); 829 } 830 } 831