1 /* $OpenBSD: screen-redraw.c,v 1.79 2020/06/23 14:10:43 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 { 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 } 282 283 /* 284 * Figure out what kind of border this cell is. Only one bit set 285 * doesn't make sense (can't have a border cell with no others 286 * connected). 287 */ 288 switch (borders) { 289 case 15: /* 1111, left right top bottom */ 290 return (CELL_JOIN); 291 case 14: /* 1110, left right top */ 292 return (CELL_BOTTOMJOIN); 293 case 13: /* 1101, left right bottom */ 294 return (CELL_TOPJOIN); 295 case 12: /* 1100, left right */ 296 return (CELL_TOPBOTTOM); 297 case 11: /* 1011, left top bottom */ 298 return (CELL_RIGHTJOIN); 299 case 10: /* 1010, left top */ 300 return (CELL_BOTTOMRIGHT); 301 case 9: /* 1001, left bottom */ 302 return (CELL_TOPRIGHT); 303 case 7: /* 0111, right top bottom */ 304 return (CELL_LEFTJOIN); 305 case 6: /* 0110, right top */ 306 return (CELL_BOTTOMLEFT); 307 case 5: /* 0101, right bottom */ 308 return (CELL_TOPLEFT); 309 case 3: /* 0011, top bottom */ 310 return (CELL_LEFTRIGHT); 311 } 312 return (CELL_OUTSIDE); 313 } 314 315 /* Check if cell inside a pane. */ 316 static int 317 screen_redraw_check_cell(struct client *c, u_int px, u_int py, int pane_status, 318 struct window_pane **wpp) 319 { 320 struct window *w = c->session->curw->window; 321 struct window_pane *wp, *active; 322 int border; 323 u_int right, line; 324 325 *wpp = NULL; 326 327 if (px >= w->sx || py >= w->sy) 328 return (CELL_OUTSIDE); 329 if (px == w->sx || py == w->sy) /* window border */ 330 return (screen_redraw_type_of_cell(c, px, py, pane_status)); 331 332 if (pane_status != PANE_STATUS_OFF) { 333 active = wp = server_client_get_pane(c); 334 do { 335 if (!window_pane_visible(wp)) 336 goto next1; 337 338 if (pane_status == PANE_STATUS_TOP) 339 line = wp->yoff - 1; 340 else 341 line = wp->yoff + wp->sy; 342 right = wp->xoff + 2 + wp->status_size - 1; 343 344 if (py == line && px >= wp->xoff + 2 && px <= right) 345 return (CELL_INSIDE); 346 347 next1: 348 wp = TAILQ_NEXT(wp, entry); 349 if (wp == NULL) 350 wp = TAILQ_FIRST(&w->panes); 351 } while (wp != active); 352 } 353 354 active = wp = server_client_get_pane(c); 355 do { 356 if (!window_pane_visible(wp)) 357 goto next2; 358 *wpp = wp; 359 360 /* 361 * If definitely inside, return. If not on border, skip. 362 * Otherwise work out the cell. 363 */ 364 border = screen_redraw_pane_border(wp, px, py, pane_status); 365 if (border == SCREEN_REDRAW_INSIDE) 366 return (CELL_INSIDE); 367 if (border == SCREEN_REDRAW_OUTSIDE) 368 goto next2; 369 return (screen_redraw_type_of_cell(c, px, py, pane_status)); 370 371 next2: 372 wp = TAILQ_NEXT(wp, entry); 373 if (wp == NULL) 374 wp = TAILQ_FIRST(&w->panes); 375 } while (wp != active); 376 377 return (CELL_OUTSIDE); 378 } 379 380 /* Check if the border of a particular pane. */ 381 static int 382 screen_redraw_check_is(u_int px, u_int py, int pane_status, 383 struct window_pane *wp) 384 { 385 enum screen_redraw_border_type border; 386 387 border = screen_redraw_pane_border(wp, px, py, pane_status); 388 if (border == SCREEN_REDRAW_BORDER) 389 return (1); 390 return (0); 391 } 392 393 /* Update pane status. */ 394 static int 395 screen_redraw_make_pane_status(struct client *c, struct window_pane *wp, 396 struct screen_redraw_ctx *rctx, int pane_lines) 397 { 398 struct window *w = wp->window; 399 struct grid_cell gc; 400 const char *fmt; 401 struct format_tree *ft; 402 char *expanded; 403 int pane_status = rctx->pane_status; 404 u_int width, i, cell_type, top, px, py; 405 struct screen_write_ctx ctx; 406 struct screen old; 407 408 ft = format_create(c, NULL, FORMAT_PANE|wp->id, FORMAT_STATUS); 409 format_defaults(ft, c, c->session, c->session->curw, wp); 410 411 if (wp == server_client_get_pane(c)) 412 style_apply(&gc, w->options, "pane-active-border-style", ft); 413 else 414 style_apply(&gc, w->options, "pane-border-style", ft); 415 fmt = options_get_string(w->options, "pane-border-format"); 416 417 expanded = format_expand_time(ft, fmt); 418 if (wp->sx < 4) 419 wp->status_size = width = 0; 420 else 421 wp->status_size = width = wp->sx - 4; 422 423 memcpy(&old, &wp->status_screen, sizeof old); 424 screen_init(&wp->status_screen, width, 1, 0); 425 wp->status_screen.mode = 0; 426 427 screen_write_start(&ctx, &wp->status_screen); 428 429 if (rctx->statustop) 430 top = rctx->statuslines; 431 else 432 top = 0; 433 for (i = 0; i < width; i++) { 434 px = wp->xoff + 2 + i; 435 if (rctx->pane_status == PANE_STATUS_TOP) 436 py = top + wp->yoff - 1; 437 else 438 py = top + wp->yoff + wp->sy; 439 cell_type = screen_redraw_type_of_cell(c, px, py, pane_status); 440 screen_redraw_border_set(wp, pane_lines, cell_type, &gc); 441 screen_write_cell(&ctx, &gc); 442 } 443 gc.attr &= ~GRID_ATTR_CHARSET; 444 445 screen_write_cursormove(&ctx, 0, 0, 0); 446 format_draw(&ctx, &gc, width, expanded, NULL); 447 screen_write_stop(&ctx); 448 449 free(expanded); 450 format_free(ft); 451 452 if (grid_compare(wp->status_screen.grid, old.grid) == 0) { 453 screen_free(&old); 454 return (0); 455 } 456 screen_free(&old); 457 return (1); 458 } 459 460 /* Draw pane status. */ 461 static void 462 screen_redraw_draw_pane_status(struct screen_redraw_ctx *ctx) 463 { 464 struct client *c = ctx->c; 465 struct window *w = c->session->curw->window; 466 struct tty *tty = &c->tty; 467 struct window_pane *wp; 468 struct screen *s; 469 u_int i, x, width, xoff, yoff, size; 470 471 log_debug("%s: %s @%u", __func__, c->name, w->id); 472 473 TAILQ_FOREACH(wp, &w->panes, entry) { 474 if (!window_pane_visible(wp)) 475 continue; 476 s = &wp->status_screen; 477 478 size = wp->status_size; 479 if (ctx->pane_status == PANE_STATUS_TOP) 480 yoff = wp->yoff - 1; 481 else 482 yoff = wp->yoff + wp->sy; 483 xoff = wp->xoff + 2; 484 485 if (xoff + size <= ctx->ox || 486 xoff >= ctx->ox + ctx->sx || 487 yoff < ctx->oy || 488 yoff >= ctx->oy + ctx->sy) 489 continue; 490 491 if (xoff >= ctx->ox && xoff + size <= ctx->ox + ctx->sx) { 492 /* All visible. */ 493 i = 0; 494 x = xoff - ctx->ox; 495 width = size; 496 } else if (xoff < ctx->ox && xoff + size > ctx->ox + ctx->sx) { 497 /* Both left and right not visible. */ 498 i = ctx->ox; 499 x = 0; 500 width = ctx->sx; 501 } else if (xoff < ctx->ox) { 502 /* Left not visible. */ 503 i = ctx->ox - xoff; 504 x = 0; 505 width = size - i; 506 } else { 507 /* Right not visible. */ 508 i = 0; 509 x = xoff - ctx->ox; 510 width = size - x; 511 } 512 513 if (ctx->statustop) 514 yoff += ctx->statuslines; 515 tty_draw_line(tty, s, i, 0, width, x, yoff - ctx->oy, 516 &grid_default_cell, NULL); 517 } 518 tty_cursor(tty, 0, 0); 519 } 520 521 /* Update status line and change flags if unchanged. */ 522 static int 523 screen_redraw_update(struct client *c, int flags) 524 { 525 struct window *w = c->session->curw->window; 526 struct window_pane *wp; 527 struct options *wo = w->options; 528 int redraw, lines; 529 struct screen_redraw_ctx ctx; 530 531 if (c->message_string != NULL) 532 redraw = status_message_redraw(c); 533 else if (c->prompt_string != NULL) 534 redraw = status_prompt_redraw(c); 535 else 536 redraw = status_redraw(c); 537 if (!redraw && (~flags & CLIENT_REDRAWSTATUSALWAYS)) 538 flags &= ~CLIENT_REDRAWSTATUS; 539 540 if (c->overlay_draw != NULL) 541 flags |= CLIENT_REDRAWOVERLAY; 542 543 if (options_get_number(wo, "pane-border-status") != PANE_STATUS_OFF) { 544 screen_redraw_set_context(c, &ctx); 545 lines = options_get_number(wo, "pane-border-lines"); 546 redraw = 0; 547 TAILQ_FOREACH(wp, &w->panes, entry) { 548 if (screen_redraw_make_pane_status(c, wp, &ctx, lines)) 549 redraw = 1; 550 } 551 if (redraw) 552 flags |= CLIENT_REDRAWBORDERS; 553 } 554 return (flags); 555 } 556 557 /* Set up redraw context. */ 558 static void 559 screen_redraw_set_context(struct client *c, struct screen_redraw_ctx *ctx) 560 { 561 struct session *s = c->session; 562 struct options *oo = s->options; 563 struct window *w = s->curw->window; 564 struct options *wo = w->options; 565 u_int lines; 566 567 memset(ctx, 0, sizeof *ctx); 568 ctx->c = c; 569 570 lines = status_line_size(c); 571 if (c->message_string != NULL || c->prompt_string != NULL) 572 lines = (lines == 0) ? 1 : lines; 573 if (lines != 0 && options_get_number(oo, "status-position") == 0) 574 ctx->statustop = 1; 575 ctx->statuslines = lines; 576 577 ctx->pane_status = options_get_number(wo, "pane-border-status"); 578 ctx->pane_lines = options_get_number(wo, "pane-border-lines"); 579 580 tty_window_offset(&c->tty, &ctx->ox, &ctx->oy, &ctx->sx, &ctx->sy); 581 582 log_debug("%s: %s @%u ox=%u oy=%u sx=%u sy=%u %u/%d", __func__, c->name, 583 w->id, ctx->ox, ctx->oy, ctx->sx, ctx->sy, ctx->statuslines, 584 ctx->statustop); 585 } 586 587 /* Redraw entire screen. */ 588 void 589 screen_redraw_screen(struct client *c) 590 { 591 struct screen_redraw_ctx ctx; 592 int flags; 593 594 if (c->flags & CLIENT_SUSPENDED) 595 return; 596 597 flags = screen_redraw_update(c, c->flags); 598 if ((flags & CLIENT_ALLREDRAWFLAGS) == 0) 599 return; 600 601 screen_redraw_set_context(c, &ctx); 602 tty_update_mode(&c->tty, c->tty.mode, NULL); 603 tty_sync_start(&c->tty); 604 605 if (flags & (CLIENT_REDRAWWINDOW|CLIENT_REDRAWBORDERS)) { 606 log_debug("%s: redrawing borders", c->name); 607 if (ctx.pane_status != PANE_STATUS_OFF) 608 screen_redraw_draw_pane_status(&ctx); 609 screen_redraw_draw_borders(&ctx); 610 } 611 if (flags & CLIENT_REDRAWWINDOW) { 612 log_debug("%s: redrawing panes", c->name); 613 screen_redraw_draw_panes(&ctx); 614 } 615 if (ctx.statuslines != 0 && 616 (flags & (CLIENT_REDRAWSTATUS|CLIENT_REDRAWSTATUSALWAYS))) { 617 log_debug("%s: redrawing status", c->name); 618 screen_redraw_draw_status(&ctx); 619 } 620 if (c->overlay_draw != NULL && (flags & CLIENT_REDRAWOVERLAY)) { 621 log_debug("%s: redrawing overlay", c->name); 622 c->overlay_draw(c, &ctx); 623 } 624 625 tty_reset(&c->tty); 626 } 627 628 /* Redraw a single pane. */ 629 void 630 screen_redraw_pane(struct client *c, struct window_pane *wp) 631 { 632 struct screen_redraw_ctx ctx; 633 634 if (c->overlay_draw != NULL || !window_pane_visible(wp)) 635 return; 636 637 screen_redraw_set_context(c, &ctx); 638 tty_update_mode(&c->tty, c->tty.mode, NULL); 639 tty_sync_start(&c->tty); 640 641 screen_redraw_draw_pane(&ctx, wp); 642 643 tty_reset(&c->tty); 644 } 645 646 /* Get border cell style. */ 647 static const struct grid_cell * 648 screen_redraw_draw_borders_style(struct screen_redraw_ctx *ctx, u_int x, 649 u_int y, struct window_pane *wp) 650 { 651 struct client *c = ctx->c; 652 struct session *s = c->session; 653 struct window *w = s->curw->window; 654 struct window_pane *active = server_client_get_pane(c); 655 struct options *oo = w->options; 656 struct format_tree *ft; 657 658 if (wp->border_gc_set) 659 return (&wp->border_gc); 660 wp->border_gc_set = 1; 661 662 ft = format_create_defaults(NULL, c, s, s->curw, wp); 663 if (screen_redraw_check_is(x, y, ctx->pane_status, active)) 664 style_apply(&wp->border_gc, oo, "pane-active-border-style", ft); 665 else 666 style_apply(&wp->border_gc, oo, "pane-border-style", ft); 667 format_free(ft); 668 669 return (&wp->border_gc); 670 } 671 672 /* Draw a border cell. */ 673 static void 674 screen_redraw_draw_borders_cell(struct screen_redraw_ctx *ctx, u_int i, u_int j) 675 { 676 struct client *c = ctx->c; 677 struct session *s = c->session; 678 struct tty *tty = &c->tty; 679 struct window_pane *wp; 680 u_int cell_type, x = ctx->ox + i, y = ctx->oy + j; 681 int pane_status = ctx->pane_status; 682 struct grid_cell gc; 683 const struct grid_cell *tmp; 684 685 if (c->overlay_check != NULL && !c->overlay_check(c, x, y)) 686 return; 687 688 cell_type = screen_redraw_check_cell(c, x, y, pane_status, &wp); 689 if (cell_type == CELL_INSIDE) 690 return; 691 692 if (wp == NULL) 693 memcpy(&gc, &grid_default_cell, sizeof gc); 694 else { 695 tmp = screen_redraw_draw_borders_style(ctx, x, y, wp); 696 if (tmp == NULL) 697 return; 698 memcpy(&gc, tmp, sizeof gc); 699 700 if (server_is_marked(s, s->curw, marked_pane.wp) && 701 screen_redraw_check_is(x, y, pane_status, marked_pane.wp)) 702 gc.attr ^= GRID_ATTR_REVERSE; 703 } 704 screen_redraw_border_set(wp, ctx->pane_lines, cell_type, &gc); 705 706 if (ctx->statustop) 707 tty_cursor(tty, i, ctx->statuslines + j); 708 else 709 tty_cursor(tty, i, j); 710 tty_cell(tty, &gc, &grid_default_cell, NULL); 711 } 712 713 /* Draw the borders. */ 714 static void 715 screen_redraw_draw_borders(struct screen_redraw_ctx *ctx) 716 { 717 struct client *c = ctx->c; 718 struct session *s = c->session; 719 struct window *w = s->curw->window; 720 struct window_pane *wp; 721 u_int i, j; 722 723 log_debug("%s: %s @%u", __func__, c->name, w->id); 724 725 TAILQ_FOREACH(wp, &w->panes, entry) 726 wp->border_gc_set = 0; 727 728 for (j = 0; j < c->tty.sy - ctx->statuslines; j++) { 729 for (i = 0; i < c->tty.sx; i++) 730 screen_redraw_draw_borders_cell(ctx, i, j); 731 } 732 } 733 734 /* Draw the panes. */ 735 static void 736 screen_redraw_draw_panes(struct screen_redraw_ctx *ctx) 737 { 738 struct client *c = ctx->c; 739 struct window *w = c->session->curw->window; 740 struct window_pane *wp; 741 742 log_debug("%s: %s @%u", __func__, c->name, w->id); 743 744 TAILQ_FOREACH(wp, &w->panes, entry) { 745 if (window_pane_visible(wp)) 746 screen_redraw_draw_pane(ctx, wp); 747 } 748 } 749 750 /* Draw the status line. */ 751 static void 752 screen_redraw_draw_status(struct screen_redraw_ctx *ctx) 753 { 754 struct client *c = ctx->c; 755 struct window *w = c->session->curw->window; 756 struct tty *tty = &c->tty; 757 struct screen *s = c->status.active; 758 u_int i, y; 759 760 log_debug("%s: %s @%u", __func__, c->name, w->id); 761 762 if (ctx->statustop) 763 y = 0; 764 else 765 y = c->tty.sy - ctx->statuslines; 766 for (i = 0; i < ctx->statuslines; i++) { 767 tty_draw_line(tty, s, 0, i, UINT_MAX, 0, y + i, 768 &grid_default_cell, NULL); 769 } 770 } 771 772 /* Draw one pane. */ 773 static void 774 screen_redraw_draw_pane(struct screen_redraw_ctx *ctx, struct window_pane *wp) 775 { 776 struct client *c = ctx->c; 777 struct window *w = c->session->curw->window; 778 struct tty *tty = &c->tty; 779 struct screen *s; 780 struct grid_cell defaults; 781 u_int i, j, top, x, y, width; 782 783 log_debug("%s: %s @%u %%%u", __func__, c->name, w->id, wp->id); 784 785 if (wp->xoff + wp->sx <= ctx->ox || wp->xoff >= ctx->ox + ctx->sx) 786 return; 787 if (ctx->statustop) 788 top = ctx->statuslines; 789 else 790 top = 0; 791 792 s = wp->screen; 793 for (j = 0; j < wp->sy; j++) { 794 if (wp->yoff + j < ctx->oy || wp->yoff + j >= ctx->oy + ctx->sy) 795 continue; 796 y = top + wp->yoff + j - ctx->oy; 797 798 if (wp->xoff >= ctx->ox && 799 wp->xoff + wp->sx <= ctx->ox + ctx->sx) { 800 /* All visible. */ 801 i = 0; 802 x = wp->xoff - ctx->ox; 803 width = wp->sx; 804 } else if (wp->xoff < ctx->ox && 805 wp->xoff + wp->sx > ctx->ox + ctx->sx) { 806 /* Both left and right not visible. */ 807 i = ctx->ox; 808 x = 0; 809 width = ctx->sx; 810 } else if (wp->xoff < ctx->ox) { 811 /* Left not visible. */ 812 i = ctx->ox - wp->xoff; 813 x = 0; 814 width = wp->sx - i; 815 } else { 816 /* Right not visible. */ 817 i = 0; 818 x = wp->xoff - ctx->ox; 819 width = ctx->sx - x; 820 } 821 log_debug("%s: %s %%%u line %u,%u at %u,%u, width %u", 822 __func__, c->name, wp->id, i, j, x, y, width); 823 824 tty_default_colours(&defaults, wp); 825 tty_draw_line(tty, s, i, j, width, x, y, &defaults, 826 wp->palette); 827 } 828 } 829