1 /* $OpenBSD: screen-redraw.c,v 1.103 2024/11/15 13:12:20 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 static void screen_redraw_draw_pane_scrollbars(struct screen_redraw_ctx *); 34 static void screen_redraw_draw_scrollbar(struct screen_redraw_ctx *, 35 struct window_pane *, int, int, int, u_int, u_int, u_int); 36 static void screen_redraw_draw_pane_scrollbar(struct screen_redraw_ctx *, 37 struct window_pane *); 38 39 #define START_ISOLATE "\342\201\246" 40 #define END_ISOLATE "\342\201\251" 41 42 /* Border in relation to a pane. */ 43 enum screen_redraw_border_type { 44 SCREEN_REDRAW_OUTSIDE, 45 SCREEN_REDRAW_INSIDE, 46 SCREEN_REDRAW_BORDER_LEFT, 47 SCREEN_REDRAW_BORDER_RIGHT, 48 SCREEN_REDRAW_BORDER_TOP, 49 SCREEN_REDRAW_BORDER_BOTTOM 50 }; 51 #define BORDER_MARKERS " +,.-" 52 53 /* Get cell border character. */ 54 static void 55 screen_redraw_border_set(struct window *w, struct window_pane *wp, 56 enum pane_lines pane_lines, int cell_type, struct grid_cell *gc) 57 { 58 u_int idx; 59 60 if (cell_type == CELL_OUTSIDE && w->fill_character != NULL) { 61 utf8_copy(&gc->data, &w->fill_character[0]); 62 return; 63 } 64 65 switch (pane_lines) { 66 case PANE_LINES_NUMBER: 67 if (cell_type == CELL_OUTSIDE) { 68 gc->attr |= GRID_ATTR_CHARSET; 69 utf8_set(&gc->data, CELL_BORDERS[CELL_OUTSIDE]); 70 break; 71 } 72 gc->attr &= ~GRID_ATTR_CHARSET; 73 if (wp != NULL && window_pane_index(wp, &idx) == 0) 74 utf8_set(&gc->data, '0' + (idx % 10)); 75 else 76 utf8_set(&gc->data, '*'); 77 break; 78 case PANE_LINES_DOUBLE: 79 gc->attr &= ~GRID_ATTR_CHARSET; 80 utf8_copy(&gc->data, tty_acs_double_borders(cell_type)); 81 break; 82 case PANE_LINES_HEAVY: 83 gc->attr &= ~GRID_ATTR_CHARSET; 84 utf8_copy(&gc->data, tty_acs_heavy_borders(cell_type)); 85 break; 86 case PANE_LINES_SIMPLE: 87 gc->attr &= ~GRID_ATTR_CHARSET; 88 utf8_set(&gc->data, SIMPLE_BORDERS[cell_type]); 89 break; 90 default: 91 gc->attr |= GRID_ATTR_CHARSET; 92 utf8_set(&gc->data, CELL_BORDERS[cell_type]); 93 break; 94 } 95 } 96 97 /* Return if window has only two panes. */ 98 static int 99 screen_redraw_two_panes(struct window *w, int direction) 100 { 101 struct window_pane *wp; 102 103 wp = TAILQ_NEXT(TAILQ_FIRST(&w->panes), entry); 104 if (wp == NULL) 105 return (0); /* one pane */ 106 if (TAILQ_NEXT(wp, entry) != NULL) 107 return (0); /* more than two panes */ 108 if (direction == 0 && wp->xoff == 0) 109 return (0); 110 if (direction == 1 && wp->yoff == 0) 111 return (0); 112 return (1); 113 } 114 115 /* Check if cell is on the border of a pane. */ 116 static enum screen_redraw_border_type 117 screen_redraw_pane_border(struct screen_redraw_ctx *ctx, struct window_pane *wp, 118 u_int px, u_int py) 119 { 120 struct options *oo = wp->window->options; 121 u_int ex = wp->xoff + wp->sx, ey = wp->yoff + wp->sy; 122 int hsplit = 0, vsplit = 0, pane_status = ctx->pane_status; 123 int pane_scrollbars = ctx->pane_scrollbars, sb_w = 0; 124 int sb_pos = ctx->pane_scrollbars_pos; 125 126 /* Inside pane. */ 127 if (px >= wp->xoff && px < ex && py >= wp->yoff && py < ey) 128 return (SCREEN_REDRAW_INSIDE); 129 130 /* Get pane indicator. */ 131 switch (options_get_number(oo, "pane-border-indicators")) { 132 case PANE_BORDER_COLOUR: 133 case PANE_BORDER_BOTH: 134 hsplit = screen_redraw_two_panes(wp->window, 0); 135 vsplit = screen_redraw_two_panes(wp->window, 1); 136 break; 137 } 138 139 /* Are scrollbars enabled? */ 140 if (window_pane_show_scrollbar(wp, pane_scrollbars)) 141 sb_w = wp->scrollbar_style.width + wp->scrollbar_style.pad; 142 143 /* 144 * Left/right borders. The wp->sy / 2 test is to colour only half the 145 * active window's border when there are two panes. 146 */ 147 if ((wp->yoff == 0 || py >= wp->yoff - 1) && py <= ey) { 148 if (sb_pos == PANE_SCROLLBARS_LEFT) { 149 if (wp->xoff - sb_w == 0 && px == wp->sx + sb_w) 150 if (!hsplit || (hsplit && py <= wp->sy / 2)) 151 return (SCREEN_REDRAW_BORDER_RIGHT); 152 if (wp->xoff - sb_w != 0 && px == wp->xoff - sb_w - 1) 153 if (!hsplit || (hsplit && py > wp->sy / 2)) 154 return (SCREEN_REDRAW_BORDER_LEFT); 155 } else { /* sb_pos == PANE_SCROLLBARS_RIGHT */ 156 if (wp->xoff == 0 && px == wp->sx + sb_w) 157 if (!hsplit || (hsplit && py <= wp->sy / 2)) 158 return (SCREEN_REDRAW_BORDER_RIGHT); 159 if (wp->xoff != 0 && px == wp->xoff - 1) 160 if (!hsplit || (hsplit && py > wp->sy / 2)) 161 return (SCREEN_REDRAW_BORDER_LEFT); 162 } 163 } 164 165 /* Top/bottom borders. */ 166 if (vsplit && pane_status == PANE_STATUS_OFF && sb_w == 0) { 167 if (wp->yoff == 0 && py == wp->sy && px <= wp->sx / 2) 168 return (SCREEN_REDRAW_BORDER_BOTTOM); 169 if (wp->yoff != 0 && py == wp->yoff - 1 && px > wp->sx / 2) 170 return (SCREEN_REDRAW_BORDER_TOP); 171 } else { 172 if (sb_pos == PANE_SCROLLBARS_LEFT) { 173 if ((wp->xoff - sb_w == 0 || px >= wp->xoff - sb_w) && 174 (px <= ex || (sb_w != 0 && px < ex + sb_w))) { 175 if (wp->yoff != 0 && py == wp->yoff - 1) 176 return (SCREEN_REDRAW_BORDER_TOP); 177 if (py == ey) 178 return (SCREEN_REDRAW_BORDER_BOTTOM); 179 } 180 } else { /* sb_pos == PANE_SCROLLBARS_RIGHT */ 181 if ((wp->xoff == 0 || px >= wp->xoff) && 182 (px <= ex || (sb_w != 0 && px < ex + sb_w))) { 183 if (wp->yoff != 0 && py == wp->yoff - 1) 184 return (SCREEN_REDRAW_BORDER_TOP); 185 if (py == ey) 186 return (SCREEN_REDRAW_BORDER_BOTTOM); 187 } 188 } 189 } 190 191 /* Outside pane. */ 192 return (SCREEN_REDRAW_OUTSIDE); 193 } 194 195 /* Check if a cell is on a border. */ 196 static int 197 screen_redraw_cell_border(struct screen_redraw_ctx *ctx, u_int px, u_int py) 198 { 199 struct client *c = ctx->c; 200 struct window *w = c->session->curw->window; 201 struct window_pane *wp; 202 u_int sy = w->sy; 203 204 if (ctx->pane_status == PANE_STATUS_BOTTOM) 205 sy--; 206 207 /* Outside the window? */ 208 if (px > w->sx || py > sy) 209 return (0); 210 211 /* On the window border? */ 212 if (px == w->sx || py == sy) 213 return (1); 214 215 /* Check all the panes. */ 216 TAILQ_FOREACH(wp, &w->panes, entry) { 217 if (!window_pane_visible(wp)) 218 continue; 219 switch (screen_redraw_pane_border(ctx, wp, px, py)) { 220 case SCREEN_REDRAW_INSIDE: 221 return (0); 222 case SCREEN_REDRAW_OUTSIDE: 223 break; 224 default: 225 return (1); 226 } 227 } 228 229 return (0); 230 } 231 232 /* Work out type of border cell from surrounding cells. */ 233 static int 234 screen_redraw_type_of_cell(struct screen_redraw_ctx *ctx, u_int px, u_int py) 235 { 236 struct client *c = ctx->c; 237 int pane_status = ctx->pane_status; 238 struct window *w = c->session->curw->window; 239 u_int sx = w->sx, sy = w->sy; 240 int borders = 0; 241 242 if (pane_status == PANE_STATUS_BOTTOM) 243 sy--; 244 245 /* Is this outside the window? */ 246 if (px > sx || py > sy) 247 return (CELL_OUTSIDE); 248 249 /* 250 * Construct a bitmask of whether the cells to the left (bit 8), right, 251 * top, and bottom (bit 1) of this cell are borders. 252 * 253 * bits 8 4 2 1: 2 254 * 8 + 4 255 * 1 256 */ 257 if (px == 0 || screen_redraw_cell_border(ctx, px - 1, py)) 258 borders |= 8; 259 if (px <= sx && screen_redraw_cell_border(ctx, px + 1, py)) 260 borders |= 4; 261 if (pane_status == PANE_STATUS_TOP) { 262 if (py != 0 && 263 screen_redraw_cell_border(ctx, px, py - 1)) 264 borders |= 2; 265 if (screen_redraw_cell_border(ctx, px, py + 1)) 266 borders |= 1; 267 } else if (pane_status == PANE_STATUS_BOTTOM) { 268 if (py == 0 || 269 screen_redraw_cell_border(ctx, px, py - 1)) 270 borders |= 2; 271 if (py != sy && 272 screen_redraw_cell_border(ctx, px, py + 1)) 273 borders |= 1; 274 } else { 275 if (py == 0 || 276 screen_redraw_cell_border(ctx, px, py - 1)) 277 borders |= 2; 278 if (screen_redraw_cell_border(ctx, px, py + 1)) 279 borders |= 1; 280 } 281 282 /* 283 * Figure out what kind of border this cell is. Only one bit set 284 * doesn't make sense (can't have a border cell with no others 285 * connected). 286 */ 287 switch (borders) { 288 case 15: /* 1111, left right top bottom */ 289 return (CELL_JOIN); 290 case 14: /* 1110, left right top */ 291 return (CELL_BOTTOMJOIN); 292 case 13: /* 1101, left right bottom */ 293 return (CELL_TOPJOIN); 294 case 12: /* 1100, left right */ 295 return (CELL_LEFTRIGHT); 296 case 11: /* 1011, left top bottom */ 297 return (CELL_RIGHTJOIN); 298 case 10: /* 1010, left top */ 299 return (CELL_BOTTOMRIGHT); 300 case 9: /* 1001, left bottom */ 301 return (CELL_TOPRIGHT); 302 case 7: /* 0111, right top bottom */ 303 return (CELL_LEFTJOIN); 304 case 6: /* 0110, right top */ 305 return (CELL_BOTTOMLEFT); 306 case 5: /* 0101, right bottom */ 307 return (CELL_TOPLEFT); 308 case 3: /* 0011, top bottom */ 309 return (CELL_TOPBOTTOM); 310 } 311 return (CELL_OUTSIDE); 312 } 313 314 /* Check if cell inside a pane. */ 315 static int 316 screen_redraw_check_cell(struct screen_redraw_ctx *ctx, u_int px, u_int py, 317 struct window_pane **wpp) 318 { 319 struct client *c = ctx->c; 320 struct window *w = c->session->curw->window; 321 struct window_pane *wp, *active; 322 int pane_status = ctx->pane_status; 323 u_int sx = w->sx, sy = w->sy; 324 int border, pane_scrollbars = ctx->pane_scrollbars; 325 u_int right, line; 326 int sb_pos = ctx->pane_scrollbars_pos; 327 int sb_w; 328 329 *wpp = NULL; 330 331 if (px > sx || py > sy) 332 return (CELL_OUTSIDE); 333 if (px == sx || py == sy) /* window border */ 334 return (screen_redraw_type_of_cell(ctx, px, py)); 335 336 if (pane_status != PANE_STATUS_OFF) { 337 active = wp = server_client_get_pane(c); 338 do { 339 if (!window_pane_visible(wp)) 340 goto next1; 341 342 if (pane_status == PANE_STATUS_TOP) 343 line = wp->yoff - 1; 344 else 345 line = wp->yoff + sy; 346 right = wp->xoff + 2 + wp->status_size - 1; 347 348 if (py == line && px >= wp->xoff + 2 && px <= right) 349 return (CELL_INSIDE); 350 351 next1: 352 wp = TAILQ_NEXT(wp, entry); 353 if (wp == NULL) 354 wp = TAILQ_FIRST(&w->panes); 355 } while (wp != active); 356 } 357 358 active = wp = server_client_get_pane(c); 359 do { 360 if (!window_pane_visible(wp)) 361 goto next2; 362 *wpp = wp; 363 364 /* Check if CELL_SCROLLBAR */ 365 if (window_pane_show_scrollbar(wp, pane_scrollbars)) { 366 367 if (pane_status == PANE_STATUS_TOP) 368 line = wp->yoff - 1; 369 else 370 line = wp->yoff + wp->sy; 371 372 /* 373 * Check if py could lie within a scrollbar. If the 374 * pane is at the top then py == 0 to sy; if the pane 375 * is not at the top, then yoff to yoff + sy. 376 */ 377 sb_w = wp->scrollbar_style.width + 378 wp->scrollbar_style.pad; 379 if ((pane_status && py != line) || 380 (wp->yoff == 0 && py < wp->sy) || 381 (py >= wp->yoff && py < wp->yoff + wp->sy)) { 382 /* Check if px lies within a scrollbar. */ 383 if ((sb_pos == PANE_SCROLLBARS_RIGHT && 384 (px >= wp->xoff + wp->sx && 385 px < wp->xoff + wp->sx + sb_w)) || 386 (sb_pos == PANE_SCROLLBARS_LEFT && 387 (px >= wp->xoff - sb_w && 388 px < wp->xoff))) 389 return (CELL_SCROLLBAR); 390 } 391 } 392 393 /* 394 * If definitely inside, return. If not on border, skip. 395 * Otherwise work out the cell. 396 */ 397 border = screen_redraw_pane_border(ctx, wp, px, py); 398 if (border == SCREEN_REDRAW_INSIDE) 399 return (CELL_INSIDE); 400 if (border == SCREEN_REDRAW_OUTSIDE) 401 goto next2; 402 return (screen_redraw_type_of_cell(ctx, px, py)); 403 404 next2: 405 wp = TAILQ_NEXT(wp, entry); 406 if (wp == NULL) 407 wp = TAILQ_FIRST(&w->panes); 408 } while (wp != active); 409 410 return (CELL_OUTSIDE); 411 } 412 413 /* Check if the border of a particular pane. */ 414 static int 415 screen_redraw_check_is(struct screen_redraw_ctx *ctx, u_int px, u_int py, 416 struct window_pane *wp) 417 { 418 enum screen_redraw_border_type border; 419 420 border = screen_redraw_pane_border(ctx, wp, px, py); 421 if (border != SCREEN_REDRAW_INSIDE && border != SCREEN_REDRAW_OUTSIDE) 422 return (1); 423 return (0); 424 } 425 426 /* Update pane status. */ 427 static int 428 screen_redraw_make_pane_status(struct client *c, struct window_pane *wp, 429 struct screen_redraw_ctx *rctx, enum pane_lines pane_lines) 430 { 431 struct window *w = wp->window; 432 struct grid_cell gc; 433 const char *fmt; 434 struct format_tree *ft; 435 char *expanded; 436 int pane_status = rctx->pane_status; 437 u_int width, i, cell_type, px, py; 438 struct screen_write_ctx ctx; 439 struct screen old; 440 441 ft = format_create(c, NULL, FORMAT_PANE|wp->id, FORMAT_STATUS); 442 format_defaults(ft, c, c->session, c->session->curw, wp); 443 444 if (wp == server_client_get_pane(c)) 445 style_apply(&gc, w->options, "pane-active-border-style", ft); 446 else 447 style_apply(&gc, w->options, "pane-border-style", ft); 448 fmt = options_get_string(wp->options, "pane-border-format"); 449 450 expanded = format_expand_time(ft, fmt); 451 if (wp->sx < 4) 452 wp->status_size = width = 0; 453 else 454 wp->status_size = width = wp->sx - 4; 455 456 memcpy(&old, &wp->status_screen, sizeof old); 457 screen_init(&wp->status_screen, width, 1, 0); 458 wp->status_screen.mode = 0; 459 460 screen_write_start(&ctx, &wp->status_screen); 461 462 for (i = 0; i < width; i++) { 463 px = wp->xoff + 2 + i; 464 if (pane_status == PANE_STATUS_TOP) 465 py = wp->yoff - 1; 466 else 467 py = wp->yoff + wp->sy; 468 cell_type = screen_redraw_type_of_cell(rctx, px, py); 469 screen_redraw_border_set(w, wp, pane_lines, cell_type, &gc); 470 screen_write_cell(&ctx, &gc); 471 } 472 gc.attr &= ~GRID_ATTR_CHARSET; 473 474 screen_write_cursormove(&ctx, 0, 0, 0); 475 format_draw(&ctx, &gc, width, expanded, NULL, 0); 476 screen_write_stop(&ctx); 477 478 free(expanded); 479 format_free(ft); 480 481 if (grid_compare(wp->status_screen.grid, old.grid) == 0) { 482 screen_free(&old); 483 return (0); 484 } 485 screen_free(&old); 486 return (1); 487 } 488 489 /* Draw pane status. */ 490 static void 491 screen_redraw_draw_pane_status(struct screen_redraw_ctx *ctx) 492 { 493 struct client *c = ctx->c; 494 struct window *w = c->session->curw->window; 495 struct tty *tty = &c->tty; 496 struct window_pane *wp; 497 struct screen *s; 498 u_int i, x, width, xoff, yoff, size; 499 500 log_debug("%s: %s @%u", __func__, c->name, w->id); 501 502 TAILQ_FOREACH(wp, &w->panes, entry) { 503 if (!window_pane_visible(wp)) 504 continue; 505 s = &wp->status_screen; 506 507 size = wp->status_size; 508 if (ctx->pane_status == PANE_STATUS_TOP) 509 yoff = wp->yoff - 1; 510 else 511 yoff = wp->yoff + wp->sy; 512 xoff = wp->xoff + 2; 513 514 if (xoff + size <= ctx->ox || 515 xoff >= ctx->ox + ctx->sx || 516 yoff < ctx->oy || 517 yoff >= ctx->oy + ctx->sy) 518 continue; 519 520 if (xoff >= ctx->ox && xoff + size <= ctx->ox + ctx->sx) { 521 /* All visible. */ 522 i = 0; 523 x = xoff - ctx->ox; 524 width = size; 525 } else if (xoff < ctx->ox && xoff + size > ctx->ox + ctx->sx) { 526 /* Both left and right not visible. */ 527 i = ctx->ox; 528 x = 0; 529 width = ctx->sx; 530 } else if (xoff < ctx->ox) { 531 /* Left not visible. */ 532 i = ctx->ox - xoff; 533 x = 0; 534 width = size - i; 535 } else { 536 /* Right not visible. */ 537 i = 0; 538 x = xoff - ctx->ox; 539 width = size - x; 540 } 541 542 if (ctx->statustop) 543 yoff += ctx->statuslines; 544 tty_draw_line(tty, s, i, 0, width, x, yoff - ctx->oy, 545 &grid_default_cell, NULL); 546 } 547 tty_cursor(tty, 0, 0); 548 } 549 550 /* Update status line and change flags if unchanged. */ 551 static uint64_t 552 screen_redraw_update(struct screen_redraw_ctx *ctx, uint64_t flags) 553 { 554 struct client *c = ctx->c; 555 struct window *w = c->session->curw->window; 556 struct window_pane *wp; 557 int redraw; 558 enum pane_lines lines; 559 560 if (c->message_string != NULL) 561 redraw = status_message_redraw(c); 562 else if (c->prompt_string != NULL) 563 redraw = status_prompt_redraw(c); 564 else 565 redraw = status_redraw(c); 566 if (!redraw && (~flags & CLIENT_REDRAWSTATUSALWAYS)) 567 flags &= ~CLIENT_REDRAWSTATUS; 568 569 if (c->overlay_draw != NULL) 570 flags |= CLIENT_REDRAWOVERLAY; 571 572 if (ctx->pane_status != PANE_STATUS_OFF) { 573 lines = ctx->pane_lines; 574 redraw = 0; 575 TAILQ_FOREACH(wp, &w->panes, entry) { 576 if (screen_redraw_make_pane_status(c, wp, ctx, lines)) 577 redraw = 1; 578 } 579 if (redraw) 580 flags |= CLIENT_REDRAWBORDERS; 581 } 582 583 return (flags); 584 } 585 586 /* Set up redraw context. */ 587 static void 588 screen_redraw_set_context(struct client *c, struct screen_redraw_ctx *ctx) 589 { 590 struct session *s = c->session; 591 struct options *oo = s->options; 592 struct window *w = s->curw->window; 593 struct options *wo = w->options; 594 u_int lines; 595 596 memset(ctx, 0, sizeof *ctx); 597 ctx->c = c; 598 599 lines = status_line_size(c); 600 if (c->message_string != NULL || c->prompt_string != NULL) 601 lines = (lines == 0) ? 1 : lines; 602 if (lines != 0 && options_get_number(oo, "status-position") == 0) 603 ctx->statustop = 1; 604 ctx->statuslines = lines; 605 606 ctx->pane_status = options_get_number(wo, "pane-border-status"); 607 ctx->pane_lines = options_get_number(wo, "pane-border-lines"); 608 609 ctx->pane_scrollbars = options_get_number(wo, "pane-scrollbars"); 610 ctx->pane_scrollbars_pos = options_get_number(wo, 611 "pane-scrollbars-position"); 612 613 tty_window_offset(&c->tty, &ctx->ox, &ctx->oy, &ctx->sx, &ctx->sy); 614 615 log_debug("%s: %s @%u ox=%u oy=%u sx=%u sy=%u %u/%d", __func__, c->name, 616 w->id, ctx->ox, ctx->oy, ctx->sx, ctx->sy, ctx->statuslines, 617 ctx->statustop); 618 } 619 620 /* Redraw entire screen. */ 621 void 622 screen_redraw_screen(struct client *c) 623 { 624 struct screen_redraw_ctx ctx; 625 uint64_t flags; 626 627 if (c->flags & CLIENT_SUSPENDED) 628 return; 629 630 screen_redraw_set_context(c, &ctx); 631 632 flags = screen_redraw_update(&ctx, c->flags); 633 if ((flags & CLIENT_ALLREDRAWFLAGS) == 0) 634 return; 635 636 tty_sync_start(&c->tty); 637 tty_update_mode(&c->tty, c->tty.mode, NULL); 638 639 if (flags & (CLIENT_REDRAWWINDOW|CLIENT_REDRAWBORDERS)) { 640 log_debug("%s: redrawing borders", c->name); 641 screen_redraw_draw_borders(&ctx); 642 if (ctx.pane_status != PANE_STATUS_OFF) 643 screen_redraw_draw_pane_status(&ctx); 644 screen_redraw_draw_pane_scrollbars(&ctx); 645 } 646 if (flags & CLIENT_REDRAWWINDOW) { 647 log_debug("%s: redrawing panes", c->name); 648 screen_redraw_draw_panes(&ctx); 649 screen_redraw_draw_pane_scrollbars(&ctx); 650 } 651 if (ctx.statuslines != 0 && 652 (flags & (CLIENT_REDRAWSTATUS|CLIENT_REDRAWSTATUSALWAYS))) { 653 log_debug("%s: redrawing status", c->name); 654 screen_redraw_draw_status(&ctx); 655 } 656 if (c->overlay_draw != NULL && (flags & CLIENT_REDRAWOVERLAY)) { 657 log_debug("%s: redrawing overlay", c->name); 658 c->overlay_draw(c, c->overlay_data, &ctx); 659 } 660 661 tty_reset(&c->tty); 662 } 663 664 /* Redraw a single pane and its scrollbar. */ 665 void 666 screen_redraw_pane(struct client *c, struct window_pane *wp, 667 int redraw_scrollbar_only) 668 { 669 struct screen_redraw_ctx ctx; 670 671 if (!window_pane_visible(wp)) 672 return; 673 674 screen_redraw_set_context(c, &ctx); 675 tty_sync_start(&c->tty); 676 tty_update_mode(&c->tty, c->tty.mode, NULL); 677 678 if (!redraw_scrollbar_only) 679 screen_redraw_draw_pane(&ctx, wp); 680 681 if (window_pane_show_scrollbar(wp, ctx.pane_scrollbars)) 682 screen_redraw_draw_pane_scrollbar(&ctx, wp); 683 684 tty_reset(&c->tty); 685 } 686 687 /* Get border cell style. */ 688 static const struct grid_cell * 689 screen_redraw_draw_borders_style(struct screen_redraw_ctx *ctx, u_int x, 690 u_int y, struct window_pane *wp) 691 { 692 struct client *c = ctx->c; 693 struct session *s = c->session; 694 struct window *w = s->curw->window; 695 struct window_pane *active = server_client_get_pane(c); 696 struct options *oo = w->options; 697 struct format_tree *ft; 698 699 if (wp->border_gc_set) 700 return (&wp->border_gc); 701 wp->border_gc_set = 1; 702 703 ft = format_create_defaults(NULL, c, s, s->curw, wp); 704 if (screen_redraw_check_is(ctx, x, y, active)) 705 style_apply(&wp->border_gc, oo, "pane-active-border-style", ft); 706 else 707 style_apply(&wp->border_gc, oo, "pane-border-style", ft); 708 format_free(ft); 709 710 return (&wp->border_gc); 711 } 712 713 /* Draw a border cell. */ 714 static void 715 screen_redraw_draw_borders_cell(struct screen_redraw_ctx *ctx, u_int i, u_int j) 716 { 717 struct client *c = ctx->c; 718 struct session *s = c->session; 719 struct window *w = s->curw->window; 720 struct options *oo = w->options; 721 struct tty *tty = &c->tty; 722 struct format_tree *ft; 723 struct window_pane *wp, *active = server_client_get_pane(c); 724 struct grid_cell gc; 725 const struct grid_cell *tmp; 726 struct overlay_ranges r; 727 u_int cell_type, x = ctx->ox + i, y = ctx->oy + j; 728 int arrows = 0, border, isolates; 729 730 if (c->overlay_check != NULL) { 731 c->overlay_check(c, c->overlay_data, x, y, 1, &r); 732 if (r.nx[0] + r.nx[1] == 0) 733 return; 734 } 735 736 cell_type = screen_redraw_check_cell(ctx, x, y, &wp); 737 if (cell_type == CELL_INSIDE || cell_type == CELL_SCROLLBAR) 738 return; 739 740 if (wp == NULL) { 741 if (!ctx->no_pane_gc_set) { 742 ft = format_create_defaults(NULL, c, s, s->curw, NULL); 743 memcpy(&ctx->no_pane_gc, &grid_default_cell, sizeof gc); 744 style_add(&ctx->no_pane_gc, oo, "pane-border-style", 745 ft); 746 format_free(ft); 747 ctx->no_pane_gc_set = 1; 748 } 749 memcpy(&gc, &ctx->no_pane_gc, sizeof gc); 750 } else { 751 tmp = screen_redraw_draw_borders_style(ctx, x, y, wp); 752 if (tmp == NULL) 753 return; 754 memcpy(&gc, tmp, sizeof gc); 755 756 if (server_is_marked(s, s->curw, marked_pane.wp) && 757 screen_redraw_check_is(ctx, x, y, marked_pane.wp)) 758 gc.attr ^= GRID_ATTR_REVERSE; 759 } 760 screen_redraw_border_set(w, wp, ctx->pane_lines, cell_type, &gc); 761 762 if (cell_type == CELL_TOPBOTTOM && 763 (c->flags & CLIENT_UTF8) && 764 tty_term_has(tty->term, TTYC_BIDI)) 765 isolates = 1; 766 else 767 isolates = 0; 768 769 if (ctx->statustop) 770 tty_cursor(tty, i, ctx->statuslines + j); 771 else 772 tty_cursor(tty, i, j); 773 if (isolates) 774 tty_puts(tty, END_ISOLATE); 775 776 switch (options_get_number(oo, "pane-border-indicators")) { 777 case PANE_BORDER_ARROWS: 778 case PANE_BORDER_BOTH: 779 arrows = 1; 780 break; 781 } 782 783 if (wp != NULL && arrows) { 784 border = screen_redraw_pane_border(ctx, active, x, y); 785 if (((i == wp->xoff + 1 && 786 (cell_type == CELL_LEFTRIGHT || 787 (cell_type == CELL_TOPJOIN && 788 border == SCREEN_REDRAW_BORDER_BOTTOM) || 789 (cell_type == CELL_BOTTOMJOIN && 790 border == SCREEN_REDRAW_BORDER_TOP))) || 791 (j == wp->yoff + 1 && 792 (cell_type == CELL_TOPBOTTOM || 793 (cell_type == CELL_LEFTJOIN && 794 border == SCREEN_REDRAW_BORDER_RIGHT) || 795 (cell_type == CELL_RIGHTJOIN && 796 border == SCREEN_REDRAW_BORDER_LEFT)))) && 797 screen_redraw_check_is(ctx, x, y, active)) { 798 gc.attr |= GRID_ATTR_CHARSET; 799 utf8_set(&gc.data, BORDER_MARKERS[border]); 800 } 801 } 802 803 tty_cell(tty, &gc, &grid_default_cell, NULL, NULL); 804 if (isolates) 805 tty_puts(tty, START_ISOLATE); 806 } 807 808 /* Draw the borders. */ 809 static void 810 screen_redraw_draw_borders(struct screen_redraw_ctx *ctx) 811 { 812 struct client *c = ctx->c; 813 struct session *s = c->session; 814 struct window *w = s->curw->window; 815 struct window_pane *wp; 816 u_int i, j; 817 818 log_debug("%s: %s @%u", __func__, c->name, w->id); 819 820 TAILQ_FOREACH(wp, &w->panes, entry) 821 wp->border_gc_set = 0; 822 823 for (j = 0; j < c->tty.sy - ctx->statuslines; j++) { 824 for (i = 0; i < c->tty.sx; i++) 825 screen_redraw_draw_borders_cell(ctx, i, j); 826 } 827 } 828 829 /* Draw the panes. */ 830 static void 831 screen_redraw_draw_panes(struct screen_redraw_ctx *ctx) 832 { 833 struct client *c = ctx->c; 834 struct window *w = c->session->curw->window; 835 struct window_pane *wp; 836 837 log_debug("%s: %s @%u", __func__, c->name, w->id); 838 839 TAILQ_FOREACH(wp, &w->panes, entry) { 840 if (window_pane_visible(wp)) 841 screen_redraw_draw_pane(ctx, wp); 842 } 843 } 844 845 /* Draw the status line. */ 846 static void 847 screen_redraw_draw_status(struct screen_redraw_ctx *ctx) 848 { 849 struct client *c = ctx->c; 850 struct window *w = c->session->curw->window; 851 struct tty *tty = &c->tty; 852 struct screen *s = c->status.active; 853 u_int i, y; 854 855 log_debug("%s: %s @%u", __func__, c->name, w->id); 856 857 if (ctx->statustop) 858 y = 0; 859 else 860 y = c->tty.sy - ctx->statuslines; 861 for (i = 0; i < ctx->statuslines; i++) { 862 tty_draw_line(tty, s, 0, i, UINT_MAX, 0, y + i, 863 &grid_default_cell, NULL); 864 } 865 } 866 867 /* Draw one pane. */ 868 static void 869 screen_redraw_draw_pane(struct screen_redraw_ctx *ctx, struct window_pane *wp) 870 { 871 struct client *c = ctx->c; 872 struct window *w = c->session->curw->window; 873 struct tty *tty = &c->tty; 874 struct screen *s = wp->screen; 875 struct colour_palette *palette = &wp->palette; 876 struct grid_cell defaults; 877 u_int i, j, top, x, y, width; 878 879 log_debug("%s: %s @%u %%%u", __func__, c->name, w->id, wp->id); 880 881 if (wp->xoff + wp->sx <= ctx->ox || wp->xoff >= ctx->ox + ctx->sx) 882 return; 883 if (ctx->statustop) 884 top = ctx->statuslines; 885 else 886 top = 0; 887 for (j = 0; j < wp->sy; j++) { 888 if (wp->yoff + j < ctx->oy || wp->yoff + j >= ctx->oy + ctx->sy) 889 continue; 890 y = top + wp->yoff + j - ctx->oy; 891 892 if (wp->xoff >= ctx->ox && 893 wp->xoff + wp->sx <= ctx->ox + ctx->sx) { 894 /* All visible. */ 895 i = 0; 896 x = wp->xoff - ctx->ox; 897 width = wp->sx; 898 } else if (wp->xoff < ctx->ox && 899 wp->xoff + wp->sx > ctx->ox + ctx->sx) { 900 /* Both left and right not visible. */ 901 i = ctx->ox; 902 x = 0; 903 width = ctx->sx; 904 } else if (wp->xoff < ctx->ox) { 905 /* Left not visible. */ 906 i = ctx->ox - wp->xoff; 907 x = 0; 908 width = wp->sx - i; 909 } else { 910 /* Right not visible. */ 911 i = 0; 912 x = wp->xoff - ctx->ox; 913 width = ctx->sx - x; 914 } 915 log_debug("%s: %s %%%u line %u,%u at %u,%u, width %u", 916 __func__, c->name, wp->id, i, j, x, y, width); 917 918 tty_default_colours(&defaults, wp); 919 tty_draw_line(tty, s, i, j, width, x, y, &defaults, palette); 920 } 921 } 922 923 /* Draw the panes scrollbars */ 924 static void 925 screen_redraw_draw_pane_scrollbars(struct screen_redraw_ctx *ctx) 926 { 927 struct client *c = ctx->c; 928 struct window *w = c->session->curw->window; 929 struct window_pane *wp; 930 931 log_debug("%s: %s @%u", __func__, c->name, w->id); 932 933 TAILQ_FOREACH(wp, &w->panes, entry) { 934 if (window_pane_show_scrollbar(wp, ctx->pane_scrollbars) && 935 window_pane_visible(wp)) 936 screen_redraw_draw_pane_scrollbar(ctx, wp); 937 } 938 } 939 940 /* Draw pane scrollbar. */ 941 void 942 screen_redraw_draw_pane_scrollbar(struct screen_redraw_ctx *ctx, 943 struct window_pane *wp) 944 { 945 struct screen *s = wp->screen; 946 double percent_view; 947 u_int sb = ctx->pane_scrollbars, total_height, sb_h = wp->sy; 948 u_int sb_pos = ctx->pane_scrollbars_pos, slider_h, slider_y; 949 int sb_w = wp->scrollbar_style.width; 950 int sb_pad = wp->scrollbar_style.pad; 951 int cm_y, cm_size, xoff = wp->xoff, ox = ctx->ox; 952 int sb_x, sb_y = (int)(wp->yoff - ctx->oy); /* sb top */ 953 954 if (window_pane_mode(wp) == WINDOW_PANE_NO_MODE) { 955 if (sb == PANE_SCROLLBARS_MODAL) 956 return; 957 /* Show slider at the bottom of the scrollbar. */ 958 total_height = screen_size_y(s) + screen_hsize(s); 959 percent_view = (double)sb_h / total_height; 960 slider_h = (double)sb_h * percent_view; 961 slider_y = sb_h - slider_h; 962 } else { 963 if (TAILQ_FIRST(&wp->modes) == NULL) 964 return; 965 if (window_copy_get_current_offset(wp, &cm_y, &cm_size) == 0) 966 return; 967 total_height = cm_size + sb_h; 968 percent_view = (double)sb_h / (cm_size + sb_h); 969 slider_h = (double)sb_h * percent_view; 970 slider_y = (sb_h + 1) * ((double)cm_y / total_height); 971 } 972 973 if (sb_pos == PANE_SCROLLBARS_LEFT) 974 sb_x = xoff - sb_w - sb_pad - ox; 975 else 976 sb_x = xoff + wp->sx - ox; 977 978 if (slider_h < 1) 979 slider_h = 1; 980 if (slider_y >= sb_h) 981 slider_y = sb_h - 1; 982 983 screen_redraw_draw_scrollbar(ctx, wp, sb_pos, sb_x, sb_y, sb_h, 984 slider_h, slider_y); 985 986 /* Store current position and height of the slider */ 987 wp->sb_slider_y = slider_y; /* top of slider y pos in scrollbar */ 988 wp->sb_slider_h = slider_h; /* height of slider */ 989 } 990 991 static void 992 screen_redraw_draw_scrollbar(struct screen_redraw_ctx *ctx, 993 struct window_pane *wp, int sb_pos, int sb_x, int sb_y, u_int sb_h, 994 u_int slider_h, u_int slider_y) 995 { 996 struct client *c = ctx->c; 997 struct tty *tty = &c->tty; 998 struct grid_cell gc, slgc, *gcp; 999 struct style *sb_style = &wp->scrollbar_style; 1000 u_int i, j, imax, jmax; 1001 u_int sb_w = sb_style->width, sb_pad = sb_style->pad; 1002 int px, py, ox = ctx->ox, oy = ctx->oy; 1003 int sx = ctx->sx, sy = ctx->sy, xoff = wp->xoff; 1004 int yoff = wp->yoff; 1005 1006 /* Set up style for slider. */ 1007 gc = sb_style->gc; 1008 memcpy(&slgc, &gc, sizeof slgc); 1009 slgc.fg = gc.bg; 1010 slgc.bg = gc.fg; 1011 1012 imax = sb_w + sb_pad; 1013 if ((int)imax + sb_x > sx) 1014 imax = sx - sb_x; 1015 jmax = sb_h; 1016 if ((int)jmax + sb_y > sy) 1017 jmax = sy - sb_y; 1018 1019 for (j = 0; j < jmax; j++) { 1020 py = sb_y + j; 1021 for (i = 0; i < imax; i++) { 1022 px = sb_x + i; 1023 if (px < xoff - ox - (int)sb_w - (int)sb_pad || 1024 px >= sx || px < 0 || 1025 py < yoff - oy - 1 || 1026 py >= sy || py < 0) 1027 continue; 1028 tty_cursor(tty, px, py); 1029 if ((sb_pos == PANE_SCROLLBARS_LEFT && 1030 i >= sb_w && i < sb_w + sb_pad) || 1031 (sb_pos == PANE_SCROLLBARS_RIGHT && 1032 i < sb_pad)) { 1033 tty_cell(tty, &grid_default_cell, 1034 &grid_default_cell, NULL, NULL); 1035 } else { 1036 if (j >= slider_y && j < slider_y + slider_h) 1037 gcp = &slgc; 1038 else 1039 gcp = &gc; 1040 tty_cell(tty, gcp, &grid_default_cell, NULL, 1041 NULL); 1042 } 1043 } 1044 } 1045 } 1046