Mercurial > vim
annotate src/move.c @ 3905:40e1ee173ecc
Added tag v7-3-708 for changeset 64427849c158
| author | Bram Moolenaar <bram@vim.org> |
|---|---|
| date | Sun, 21 Oct 2012 22:18:21 +0200 |
| parents | 3229335d0c4e |
| children | e2d36f345a7f |
| rev | line source |
|---|---|
| 7 | 1 /* vi:set ts=8 sts=4 sw=4: |
| 2 * | |
| 3 * VIM - Vi IMproved by Bram Moolenaar | |
| 4 * | |
| 5 * Do ":help uganda" in Vim to read copying and usage conditions. | |
| 6 * Do ":help credits" in Vim to see a list of people who contributed. | |
| 7 * See README.txt for an overview of the Vim source code. | |
| 8 */ | |
| 9 /* | |
| 10 * move.c: Functions for moving the cursor and scrolling text. | |
| 11 * | |
| 12 * There are two ways to move the cursor: | |
| 13 * 1. Move the cursor directly, the text is scrolled to keep the cursor in the | |
| 14 * window. | |
| 15 * 2. Scroll the text, the cursor is moved into the text visible in the | |
| 16 * window. | |
| 17 * The 'scrolloff' option makes this a bit complicated. | |
| 18 */ | |
| 19 | |
| 20 #include "vim.h" | |
| 21 | |
| 22 static void comp_botline __ARGS((win_T *wp)); | |
| 532 | 23 static int scrolljump_value __ARGS((void)); |
| 7 | 24 static int check_top_offset __ARGS((void)); |
| 25 static void curs_rows __ARGS((win_T *wp, int do_botline)); | |
| 26 static void validate_botline_win __ARGS((win_T *wp)); | |
| 27 static void validate_cheight __ARGS((void)); | |
| 28 | |
| 29 typedef struct | |
| 30 { | |
| 31 linenr_T lnum; /* line number */ | |
| 32 #ifdef FEAT_DIFF | |
| 33 int fill; /* filler lines */ | |
| 34 #endif | |
| 35 int height; /* height of added line */ | |
| 36 } lineoff_T; | |
| 37 | |
| 38 static void topline_back __ARGS((lineoff_T *lp)); | |
| 39 static void botline_forw __ARGS((lineoff_T *lp)); | |
| 40 #ifdef FEAT_DIFF | |
| 41 static void botline_topline __ARGS((lineoff_T *lp)); | |
| 42 static void topline_botline __ARGS((lineoff_T *lp)); | |
| 43 static void max_topfill __ARGS((void)); | |
| 44 #endif | |
| 45 | |
| 46 /* | |
| 47 * Compute wp->w_botline for the current wp->w_topline. Can be called after | |
| 48 * wp->w_topline changed. | |
| 49 */ | |
| 50 static void | |
| 51 comp_botline(wp) | |
| 52 win_T *wp; | |
| 53 { | |
| 54 int n; | |
| 55 linenr_T lnum; | |
| 56 int done; | |
| 57 #ifdef FEAT_FOLDING | |
| 58 linenr_T last; | |
| 59 int folded; | |
| 60 #endif | |
| 61 | |
| 62 /* | |
| 63 * If w_cline_row is valid, start there. | |
| 64 * Otherwise have to start at w_topline. | |
| 65 */ | |
| 66 check_cursor_moved(wp); | |
| 67 if (wp->w_valid & VALID_CROW) | |
| 68 { | |
| 69 lnum = wp->w_cursor.lnum; | |
| 70 done = wp->w_cline_row; | |
| 71 } | |
| 72 else | |
| 73 { | |
| 74 lnum = wp->w_topline; | |
| 75 done = 0; | |
| 76 } | |
| 77 | |
| 78 for ( ; lnum <= wp->w_buffer->b_ml.ml_line_count; ++lnum) | |
| 79 { | |
| 80 #ifdef FEAT_FOLDING | |
| 81 last = lnum; | |
| 82 folded = FALSE; | |
| 83 if (hasFoldingWin(wp, lnum, NULL, &last, TRUE, NULL)) | |
| 84 { | |
| 85 n = 1; | |
| 86 folded = TRUE; | |
| 87 } | |
| 88 else | |
| 89 #endif | |
| 90 #ifdef FEAT_DIFF | |
| 91 if (lnum == wp->w_topline) | |
| 92 n = plines_win_nofill(wp, lnum, TRUE) + wp->w_topfill; | |
| 93 else | |
| 94 #endif | |
| 95 n = plines_win(wp, lnum, TRUE); | |
| 96 if ( | |
| 97 #ifdef FEAT_FOLDING | |
| 98 lnum <= wp->w_cursor.lnum && last >= wp->w_cursor.lnum | |
| 99 #else | |
| 100 lnum == wp->w_cursor.lnum | |
| 101 #endif | |
| 102 ) | |
| 103 { | |
| 104 wp->w_cline_row = done; | |
| 105 wp->w_cline_height = n; | |
| 106 #ifdef FEAT_FOLDING | |
| 107 wp->w_cline_folded = folded; | |
| 108 #endif | |
| 109 wp->w_valid |= (VALID_CROW|VALID_CHEIGHT); | |
| 110 } | |
| 111 if (done + n > wp->w_height) | |
| 112 break; | |
| 113 done += n; | |
| 114 #ifdef FEAT_FOLDING | |
| 115 lnum = last; | |
| 116 #endif | |
| 117 } | |
| 118 | |
| 119 /* wp->w_botline is the line that is just below the window */ | |
| 120 wp->w_botline = lnum; | |
| 121 wp->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 122 | |
| 123 set_empty_rows(wp, done); | |
| 124 } | |
| 125 | |
| 126 /* | |
| 127 * Update curwin->w_topline and redraw if necessary. | |
| 128 * Used to update the screen before printing a message. | |
| 129 */ | |
| 130 void | |
| 131 update_topline_redraw() | |
| 132 { | |
| 133 update_topline(); | |
| 134 if (must_redraw) | |
| 135 update_screen(0); | |
| 136 } | |
| 137 | |
| 138 /* | |
| 139 * Update curwin->w_topline to move the cursor onto the screen. | |
| 140 */ | |
| 141 void | |
| 142 update_topline() | |
| 143 { | |
| 144 long line_count; | |
| 145 int halfheight; | |
| 146 int n; | |
| 147 linenr_T old_topline; | |
| 148 #ifdef FEAT_DIFF | |
| 149 int old_topfill; | |
| 150 #endif | |
| 151 #ifdef FEAT_FOLDING | |
| 152 linenr_T lnum; | |
| 153 #endif | |
| 154 int check_topline = FALSE; | |
| 155 int check_botline = FALSE; | |
| 156 #ifdef FEAT_MOUSE | |
| 157 int save_so = p_so; | |
| 158 #endif | |
| 159 | |
| 160 if (!screen_valid(TRUE)) | |
| 161 return; | |
| 162 | |
| 163 check_cursor_moved(curwin); | |
| 164 if (curwin->w_valid & VALID_TOPLINE) | |
| 165 return; | |
| 166 | |
| 167 #ifdef FEAT_MOUSE | |
| 168 /* When dragging with the mouse, don't scroll that quickly */ | |
| 1121 | 169 if (mouse_dragging > 0) |
| 7 | 170 p_so = mouse_dragging - 1; |
| 171 #endif | |
| 172 | |
| 173 old_topline = curwin->w_topline; | |
| 174 #ifdef FEAT_DIFF | |
| 175 old_topfill = curwin->w_topfill; | |
| 176 #endif | |
| 177 | |
| 178 /* | |
| 179 * If the buffer is empty, always set topline to 1. | |
| 180 */ | |
| 181 if (bufempty()) /* special case - file is empty */ | |
| 182 { | |
| 183 if (curwin->w_topline != 1) | |
| 184 redraw_later(NOT_VALID); | |
| 185 curwin->w_topline = 1; | |
| 186 curwin->w_botline = 2; | |
| 187 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 188 #ifdef FEAT_SCROLLBIND | |
| 189 curwin->w_scbind_pos = 1; | |
| 190 #endif | |
| 191 } | |
| 192 | |
| 193 /* | |
| 194 * If the cursor is above or near the top of the window, scroll the window | |
| 195 * to show the line the cursor is in, with 'scrolloff' context. | |
| 196 */ | |
| 197 else | |
| 198 { | |
| 199 if (curwin->w_topline > 1) | |
| 200 { | |
| 201 /* If the cursor is above topline, scrolling is always needed. | |
| 202 * If the cursor is far below topline and there is no folding, | |
| 203 * scrolling down is never needed. */ | |
| 204 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 205 check_topline = TRUE; | |
| 206 else if (check_top_offset()) | |
| 207 check_topline = TRUE; | |
| 208 } | |
| 209 #ifdef FEAT_DIFF | |
| 210 /* Check if there are more filler lines than allowed. */ | |
| 211 if (!check_topline && curwin->w_topfill > diff_check_fill(curwin, | |
| 212 curwin->w_topline)) | |
| 213 check_topline = TRUE; | |
| 214 #endif | |
| 215 | |
| 216 if (check_topline) | |
| 217 { | |
| 218 halfheight = curwin->w_height / 2 - 1; | |
| 219 if (halfheight < 2) | |
| 220 halfheight = 2; | |
| 221 | |
| 222 #ifdef FEAT_FOLDING | |
| 223 if (hasAnyFolding(curwin)) | |
| 224 { | |
| 225 /* Count the number of logical lines between the cursor and | |
| 226 * topline + p_so (approximation of how much will be | |
| 227 * scrolled). */ | |
| 228 n = 0; | |
| 229 for (lnum = curwin->w_cursor.lnum; | |
| 230 lnum < curwin->w_topline + p_so; ++lnum) | |
| 231 { | |
| 232 ++n; | |
| 233 /* stop at end of file or when we know we are far off */ | |
| 234 if (lnum >= curbuf->b_ml.ml_line_count || n >= halfheight) | |
| 235 break; | |
| 236 (void)hasFolding(lnum, NULL, &lnum); | |
| 237 } | |
| 238 } | |
| 239 else | |
| 240 #endif | |
| 241 n = curwin->w_topline + p_so - curwin->w_cursor.lnum; | |
| 242 | |
| 243 /* If we weren't very close to begin with, we scroll to put the | |
| 244 * cursor in the middle of the window. Otherwise put the cursor | |
| 245 * near the top of the window. */ | |
| 246 if (n >= halfheight) | |
| 247 scroll_cursor_halfway(FALSE); | |
| 248 else | |
| 249 { | |
| 532 | 250 scroll_cursor_top(scrolljump_value(), FALSE); |
| 7 | 251 check_botline = TRUE; |
| 252 } | |
| 253 } | |
| 254 | |
| 255 else | |
| 256 { | |
| 257 #ifdef FEAT_FOLDING | |
| 258 /* Make sure topline is the first line of a fold. */ | |
| 259 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 260 #endif | |
| 261 check_botline = TRUE; | |
| 262 } | |
| 263 } | |
| 264 | |
| 265 /* | |
| 266 * If the cursor is below the bottom of the window, scroll the window | |
| 267 * to put the cursor on the window. | |
| 268 * When w_botline is invalid, recompute it first, to avoid a redraw later. | |
| 269 * If w_botline was approximated, we might need a redraw later in a few | |
| 270 * cases, but we don't want to spend (a lot of) time recomputing w_botline | |
| 271 * for every small change. | |
| 272 */ | |
| 273 if (check_botline) | |
| 274 { | |
| 275 if (!(curwin->w_valid & VALID_BOTLINE_AP)) | |
| 276 validate_botline(); | |
| 277 | |
| 278 if (curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 279 { | |
| 1744 | 280 if (curwin->w_cursor.lnum < curwin->w_botline) |
| 281 { | |
| 282 if (((long)curwin->w_cursor.lnum | |
| 7 | 283 >= (long)curwin->w_botline - p_so |
| 284 #ifdef FEAT_FOLDING | |
| 285 || hasAnyFolding(curwin) | |
| 286 #endif | |
| 287 )) | |
| 1744 | 288 { |
| 7 | 289 lineoff_T loff; |
| 290 | |
| 1744 | 291 /* Cursor is (a few lines) above botline, check if there are |
| 292 * 'scrolloff' window lines below the cursor. If not, need to | |
| 293 * scroll. */ | |
| 7 | 294 n = curwin->w_empty_rows; |
| 295 loff.lnum = curwin->w_cursor.lnum; | |
| 296 #ifdef FEAT_FOLDING | |
| 297 /* In a fold go to its last line. */ | |
| 298 (void)hasFolding(loff.lnum, NULL, &loff.lnum); | |
| 299 #endif | |
| 300 #ifdef FEAT_DIFF | |
| 301 loff.fill = 0; | |
| 302 n += curwin->w_filler_rows; | |
| 303 #endif | |
| 304 loff.height = 0; | |
| 305 while (loff.lnum < curwin->w_botline | |
| 306 #ifdef FEAT_DIFF | |
| 307 && (loff.lnum + 1 < curwin->w_botline || loff.fill == 0) | |
| 308 #endif | |
| 309 ) | |
| 310 { | |
| 311 n += loff.height; | |
| 312 if (n >= p_so) | |
| 313 break; | |
| 314 botline_forw(&loff); | |
| 315 } | |
| 316 if (n >= p_so) | |
| 317 /* sufficient context, no need to scroll */ | |
| 318 check_botline = FALSE; | |
| 1744 | 319 } |
| 320 else | |
| 321 /* sufficient context, no need to scroll */ | |
| 322 check_botline = FALSE; | |
| 7 | 323 } |
| 324 if (check_botline) | |
| 325 { | |
| 326 #ifdef FEAT_FOLDING | |
| 327 if (hasAnyFolding(curwin)) | |
| 328 { | |
| 329 /* Count the number of logical lines between the cursor and | |
| 330 * botline - p_so (approximation of how much will be | |
| 331 * scrolled). */ | |
| 332 line_count = 0; | |
| 333 for (lnum = curwin->w_cursor.lnum; | |
| 334 lnum >= curwin->w_botline - p_so; --lnum) | |
| 335 { | |
| 336 ++line_count; | |
| 337 /* stop at end of file or when we know we are far off */ | |
| 338 if (lnum <= 0 || line_count > curwin->w_height + 1) | |
| 339 break; | |
| 340 (void)hasFolding(lnum, &lnum, NULL); | |
| 341 } | |
| 342 } | |
| 343 else | |
| 344 #endif | |
| 345 line_count = curwin->w_cursor.lnum - curwin->w_botline | |
| 346 + 1 + p_so; | |
| 347 if (line_count <= curwin->w_height + 1) | |
| 532 | 348 scroll_cursor_bot(scrolljump_value(), FALSE); |
| 7 | 349 else |
| 350 scroll_cursor_halfway(FALSE); | |
| 351 } | |
| 352 } | |
| 353 } | |
| 354 curwin->w_valid |= VALID_TOPLINE; | |
| 355 | |
| 356 /* | |
| 357 * Need to redraw when topline changed. | |
| 358 */ | |
| 359 if (curwin->w_topline != old_topline | |
| 360 #ifdef FEAT_DIFF | |
| 361 || curwin->w_topfill != old_topfill | |
| 362 #endif | |
| 363 ) | |
| 364 { | |
| 3318 | 365 dollar_vcol = -1; |
| 740 | 366 if (curwin->w_skipcol != 0) |
| 7 | 367 { |
| 368 curwin->w_skipcol = 0; | |
| 369 redraw_later(NOT_VALID); | |
| 370 } | |
| 371 else | |
| 372 redraw_later(VALID); | |
| 373 /* May need to set w_skipcol when cursor in w_topline. */ | |
| 374 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 375 validate_cursor(); | |
| 376 } | |
| 377 | |
| 378 #ifdef FEAT_MOUSE | |
| 379 p_so = save_so; | |
| 380 #endif | |
| 381 } | |
| 382 | |
| 383 /* | |
| 532 | 384 * Return the scrolljump value to use for the current window. |
| 385 * When 'scrolljump' is positive use it as-is. | |
| 386 * When 'scrolljump' is negative use it as a percentage of the window height. | |
| 387 */ | |
| 388 static int | |
| 389 scrolljump_value() | |
| 390 { | |
| 391 if (p_sj >= 0) | |
| 392 return (int)p_sj; | |
| 393 return (curwin->w_height * -p_sj) / 100; | |
| 394 } | |
| 395 | |
| 396 /* | |
| 7 | 397 * Return TRUE when there are not 'scrolloff' lines above the cursor for the |
| 398 * current window. | |
| 399 */ | |
| 400 static int | |
| 401 check_top_offset() | |
| 402 { | |
| 403 lineoff_T loff; | |
| 404 int n; | |
| 405 | |
| 406 if (curwin->w_cursor.lnum < curwin->w_topline + p_so | |
| 407 #ifdef FEAT_FOLDING | |
| 408 || hasAnyFolding(curwin) | |
| 409 #endif | |
| 410 ) | |
| 411 { | |
| 412 loff.lnum = curwin->w_cursor.lnum; | |
| 413 #ifdef FEAT_DIFF | |
| 414 loff.fill = 0; | |
| 415 n = curwin->w_topfill; /* always have this context */ | |
| 416 #else | |
| 417 n = 0; | |
| 418 #endif | |
| 419 /* Count the visible screen lines above the cursor line. */ | |
| 420 while (n < p_so) | |
| 421 { | |
| 422 topline_back(&loff); | |
| 423 /* Stop when included a line above the window. */ | |
| 424 if (loff.lnum < curwin->w_topline | |
| 425 #ifdef FEAT_DIFF | |
| 426 || (loff.lnum == curwin->w_topline && loff.fill > 0) | |
| 427 #endif | |
| 428 ) | |
| 429 break; | |
| 430 n += loff.height; | |
| 431 } | |
| 432 if (n < p_so) | |
| 433 return TRUE; | |
| 434 } | |
| 435 return FALSE; | |
| 436 } | |
| 437 | |
| 438 void | |
| 439 update_curswant() | |
| 440 { | |
| 441 if (curwin->w_set_curswant) | |
| 442 { | |
| 443 validate_virtcol(); | |
| 444 curwin->w_curswant = curwin->w_virtcol; | |
| 445 curwin->w_set_curswant = FALSE; | |
| 446 } | |
| 447 } | |
| 448 | |
| 449 /* | |
| 450 * Check if the cursor has moved. Set the w_valid flag accordingly. | |
| 451 */ | |
| 452 void | |
| 453 check_cursor_moved(wp) | |
| 454 win_T *wp; | |
| 455 { | |
| 456 if (wp->w_cursor.lnum != wp->w_valid_cursor.lnum) | |
| 457 { | |
| 458 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 459 |VALID_CHEIGHT|VALID_CROW|VALID_TOPLINE); | |
| 460 wp->w_valid_cursor = wp->w_cursor; | |
| 461 wp->w_valid_leftcol = wp->w_leftcol; | |
| 462 } | |
| 463 else if (wp->w_cursor.col != wp->w_valid_cursor.col | |
| 464 || wp->w_leftcol != wp->w_valid_leftcol | |
| 465 #ifdef FEAT_VIRTUALEDIT | |
| 466 || wp->w_cursor.coladd != wp->w_valid_cursor.coladd | |
| 467 #endif | |
| 468 ) | |
| 469 { | |
| 470 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL); | |
| 471 wp->w_valid_cursor.col = wp->w_cursor.col; | |
| 472 wp->w_valid_leftcol = wp->w_leftcol; | |
| 473 #ifdef FEAT_VIRTUALEDIT | |
| 474 wp->w_valid_cursor.coladd = wp->w_cursor.coladd; | |
| 475 #endif | |
| 476 } | |
| 477 } | |
| 478 | |
| 479 /* | |
| 480 * Call this function when some window settings have changed, which require | |
| 481 * the cursor position, botline and topline to be recomputed and the window to | |
| 482 * be redrawn. E.g, when changing the 'wrap' option or folding. | |
| 483 */ | |
| 484 void | |
| 485 changed_window_setting() | |
| 486 { | |
| 487 changed_window_setting_win(curwin); | |
| 488 } | |
| 489 | |
| 490 void | |
| 491 changed_window_setting_win(wp) | |
| 492 win_T *wp; | |
| 493 { | |
| 494 wp->w_lines_valid = 0; | |
| 495 changed_line_abv_curs_win(wp); | |
| 496 wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP|VALID_TOPLINE); | |
| 497 redraw_win_later(wp, NOT_VALID); | |
| 498 } | |
| 499 | |
| 500 /* | |
| 501 * Set wp->w_topline to a certain number. | |
| 502 */ | |
| 503 void | |
| 504 set_topline(wp, lnum) | |
| 505 win_T *wp; | |
| 506 linenr_T lnum; | |
| 507 { | |
| 508 #ifdef FEAT_FOLDING | |
| 509 /* go to first of folded lines */ | |
| 510 (void)hasFoldingWin(wp, lnum, &lnum, NULL, TRUE, NULL); | |
| 511 #endif | |
| 512 /* Approximate the value of w_botline */ | |
| 513 wp->w_botline += lnum - wp->w_topline; | |
| 514 wp->w_topline = lnum; | |
| 1744 | 515 #ifdef FEAT_AUTOCMD |
| 516 wp->w_topline_was_set = TRUE; | |
| 517 #endif | |
| 7 | 518 #ifdef FEAT_DIFF |
| 519 wp->w_topfill = 0; | |
| 520 #endif | |
| 521 wp->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_TOPLINE); | |
| 522 /* Don't set VALID_TOPLINE here, 'scrolloff' needs to be checked. */ | |
| 523 redraw_later(VALID); | |
| 524 } | |
| 525 | |
| 526 /* | |
| 527 * Call this function when the length of the cursor line (in screen | |
| 528 * characters) has changed, and the change is before the cursor. | |
| 529 * Need to take care of w_botline separately! | |
| 530 */ | |
| 531 void | |
| 532 changed_cline_bef_curs() | |
| 533 { | |
| 534 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 535 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 536 } | |
| 537 | |
| 538 void | |
| 539 changed_cline_bef_curs_win(wp) | |
| 540 win_T *wp; | |
| 541 { | |
| 542 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 543 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 544 } | |
| 545 | |
| 546 /* | |
| 547 * Call this function when the length of a line (in screen characters) above | |
| 548 * the cursor have changed. | |
| 549 * Need to take care of w_botline separately! | |
| 550 */ | |
| 551 void | |
| 552 changed_line_abv_curs() | |
| 553 { | |
| 554 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
| 555 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 556 } | |
| 557 | |
| 558 void | |
| 559 changed_line_abv_curs_win(wp) | |
| 560 win_T *wp; | |
| 561 { | |
| 562 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
| 563 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 564 } | |
| 565 | |
| 566 /* | |
| 567 * Make sure the value of curwin->w_botline is valid. | |
| 568 */ | |
| 569 void | |
| 570 validate_botline() | |
| 571 { | |
| 572 if (!(curwin->w_valid & VALID_BOTLINE)) | |
| 573 comp_botline(curwin); | |
| 574 } | |
| 575 | |
| 576 /* | |
| 577 * Make sure the value of wp->w_botline is valid. | |
| 578 */ | |
| 579 static void | |
| 580 validate_botline_win(wp) | |
| 581 win_T *wp; | |
| 582 { | |
| 583 if (!(wp->w_valid & VALID_BOTLINE)) | |
| 584 comp_botline(wp); | |
| 585 } | |
| 586 | |
| 587 /* | |
| 588 * Mark curwin->w_botline as invalid (because of some change in the buffer). | |
| 589 */ | |
| 590 void | |
| 591 invalidate_botline() | |
| 592 { | |
| 593 curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 594 } | |
| 595 | |
| 596 void | |
| 597 invalidate_botline_win(wp) | |
| 598 win_T *wp; | |
| 599 { | |
| 600 wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 601 } | |
| 602 | |
| 603 void | |
| 604 approximate_botline_win(wp) | |
| 605 win_T *wp; | |
| 606 { | |
| 607 wp->w_valid &= ~VALID_BOTLINE; | |
| 608 } | |
| 609 | |
| 610 /* | |
| 611 * Return TRUE if curwin->w_wrow and curwin->w_wcol are valid. | |
| 612 */ | |
| 613 int | |
| 614 cursor_valid() | |
| 615 { | |
| 616 check_cursor_moved(curwin); | |
| 617 return ((curwin->w_valid & (VALID_WROW|VALID_WCOL)) == | |
| 618 (VALID_WROW|VALID_WCOL)); | |
| 619 } | |
| 620 | |
| 621 /* | |
| 622 * Validate cursor position. Makes sure w_wrow and w_wcol are valid. | |
| 623 * w_topline must be valid, you may need to call update_topline() first! | |
| 624 */ | |
| 625 void | |
| 626 validate_cursor() | |
| 627 { | |
| 628 check_cursor_moved(curwin); | |
| 629 if ((curwin->w_valid & (VALID_WCOL|VALID_WROW)) != (VALID_WCOL|VALID_WROW)) | |
| 630 curs_columns(TRUE); | |
| 631 } | |
| 632 | |
| 633 #if defined(FEAT_GUI) || defined(PROTO) | |
| 634 /* | |
| 635 * validate w_cline_row. | |
| 636 */ | |
| 637 void | |
| 638 validate_cline_row() | |
| 639 { | |
| 640 /* | |
| 641 * First make sure that w_topline is valid (after moving the cursor). | |
| 642 */ | |
| 643 update_topline(); | |
| 644 check_cursor_moved(curwin); | |
| 645 if (!(curwin->w_valid & VALID_CROW)) | |
| 646 curs_rows(curwin, FALSE); | |
| 647 } | |
| 648 #endif | |
| 649 | |
| 650 /* | |
| 651 * Compute wp->w_cline_row and wp->w_cline_height, based on the current value | |
|
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652 * of wp->w_topline. |
| 7 | 653 * |
| 654 * Returns OK when cursor is in the window, FAIL when it isn't. | |
| 655 */ | |
| 656 static void | |
| 657 curs_rows(wp, do_botline) | |
| 658 win_T *wp; | |
| 659 int do_botline; /* also compute w_botline */ | |
| 660 { | |
| 661 linenr_T lnum; | |
| 662 int i; | |
| 663 int all_invalid; | |
| 664 int valid; | |
| 665 #ifdef FEAT_FOLDING | |
| 666 long fold_count; | |
| 667 #endif | |
| 668 | |
| 669 /* Check if wp->w_lines[].wl_size is invalid */ | |
| 670 all_invalid = (!redrawing() | |
| 671 || wp->w_lines_valid == 0 | |
| 672 || wp->w_lines[0].wl_lnum > wp->w_topline); | |
| 673 i = 0; | |
| 674 wp->w_cline_row = 0; | |
| 675 for (lnum = wp->w_topline; lnum < wp->w_cursor.lnum; ++i) | |
| 676 { | |
| 677 valid = FALSE; | |
| 678 if (!all_invalid && i < wp->w_lines_valid) | |
| 679 { | |
| 680 if (wp->w_lines[i].wl_lnum < lnum || !wp->w_lines[i].wl_valid) | |
| 681 continue; /* skip changed or deleted lines */ | |
| 682 if (wp->w_lines[i].wl_lnum == lnum) | |
| 683 { | |
| 684 #ifdef FEAT_FOLDING | |
| 685 /* Check for newly inserted lines below this row, in which | |
| 686 * case we need to check for folded lines. */ | |
| 687 if (!wp->w_buffer->b_mod_set | |
| 688 || wp->w_lines[i].wl_lastlnum < wp->w_cursor.lnum | |
| 689 || wp->w_buffer->b_mod_top | |
| 690 > wp->w_lines[i].wl_lastlnum + 1) | |
| 691 #endif | |
| 692 valid = TRUE; | |
| 693 } | |
| 694 else if (wp->w_lines[i].wl_lnum > lnum) | |
| 695 --i; /* hold at inserted lines */ | |
| 696 } | |
| 697 if (valid | |
| 698 #ifdef FEAT_DIFF | |
| 699 && (lnum != wp->w_topline || !wp->w_p_diff) | |
| 700 #endif | |
| 701 ) | |
| 702 { | |
| 703 #ifdef FEAT_FOLDING | |
| 704 lnum = wp->w_lines[i].wl_lastlnum + 1; | |
| 705 /* Cursor inside folded lines, don't count this row */ | |
| 706 if (lnum > wp->w_cursor.lnum) | |
| 707 break; | |
| 708 #else | |
| 709 ++lnum; | |
| 710 #endif | |
| 711 wp->w_cline_row += wp->w_lines[i].wl_size; | |
| 712 } | |
| 713 else | |
| 714 { | |
| 715 #ifdef FEAT_FOLDING | |
| 716 fold_count = foldedCount(wp, lnum, NULL); | |
| 717 if (fold_count) | |
| 718 { | |
| 719 lnum += fold_count; | |
| 720 if (lnum > wp->w_cursor.lnum) | |
| 721 break; | |
| 722 ++wp->w_cline_row; | |
| 723 } | |
| 724 else | |
| 725 #endif | |
| 726 #ifdef FEAT_DIFF | |
| 727 if (lnum == wp->w_topline) | |
| 728 wp->w_cline_row += plines_win_nofill(wp, lnum++, TRUE) | |
| 729 + wp->w_topfill; | |
| 730 else | |
| 731 #endif | |
| 732 wp->w_cline_row += plines_win(wp, lnum++, TRUE); | |
| 733 } | |
| 734 } | |
| 735 | |
| 736 check_cursor_moved(wp); | |
| 737 if (!(wp->w_valid & VALID_CHEIGHT)) | |
| 738 { | |
| 739 if (all_invalid | |
| 740 || i == wp->w_lines_valid | |
| 741 || (i < wp->w_lines_valid | |
| 742 && (!wp->w_lines[i].wl_valid | |
| 743 || wp->w_lines[i].wl_lnum != wp->w_cursor.lnum))) | |
| 744 { | |
| 745 #ifdef FEAT_DIFF | |
| 746 if (wp->w_cursor.lnum == wp->w_topline) | |
| 747 wp->w_cline_height = plines_win_nofill(wp, wp->w_cursor.lnum, | |
| 748 TRUE) + wp->w_topfill; | |
| 749 else | |
| 750 #endif | |
| 751 wp->w_cline_height = plines_win(wp, wp->w_cursor.lnum, TRUE); | |
| 752 #ifdef FEAT_FOLDING | |
| 753 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
| 754 NULL, NULL, TRUE, NULL); | |
| 755 #endif | |
| 756 } | |
| 757 else if (i > wp->w_lines_valid) | |
| 758 { | |
| 759 /* a line that is too long to fit on the last screen line */ | |
| 760 wp->w_cline_height = 0; | |
| 761 #ifdef FEAT_FOLDING | |
| 762 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
| 763 NULL, NULL, TRUE, NULL); | |
| 764 #endif | |
| 765 } | |
| 766 else | |
| 767 { | |
| 768 wp->w_cline_height = wp->w_lines[i].wl_size; | |
| 769 #ifdef FEAT_FOLDING | |
| 770 wp->w_cline_folded = wp->w_lines[i].wl_folded; | |
| 771 #endif | |
| 772 } | |
| 773 } | |
| 774 | |
| 775 wp->w_valid |= VALID_CROW|VALID_CHEIGHT; | |
| 776 | |
| 777 /* validate botline too, if update_screen doesn't do it */ | |
| 778 if (do_botline && all_invalid) | |
| 779 validate_botline_win(wp); | |
| 780 } | |
| 781 | |
| 782 /* | |
| 783 * Validate curwin->w_virtcol only. | |
| 784 */ | |
| 785 void | |
| 786 validate_virtcol() | |
| 787 { | |
| 788 validate_virtcol_win(curwin); | |
| 789 } | |
| 790 | |
| 791 /* | |
| 792 * Validate wp->w_virtcol only. | |
| 793 */ | |
| 794 void | |
| 795 validate_virtcol_win(wp) | |
| 796 win_T *wp; | |
| 797 { | |
| 798 check_cursor_moved(wp); | |
| 799 if (!(wp->w_valid & VALID_VIRTCOL)) | |
| 800 { | |
| 801 getvvcol(wp, &wp->w_cursor, NULL, &(wp->w_virtcol), NULL); | |
| 802 wp->w_valid |= VALID_VIRTCOL; | |
| 740 | 803 #ifdef FEAT_SYN_HL |
| 752 | 804 if (wp->w_p_cuc |
| 805 # ifdef FEAT_INS_EXPAND | |
| 806 && !pum_visible() | |
| 807 # endif | |
| 808 ) | |
| 740 | 809 redraw_win_later(wp, SOME_VALID); |
| 810 #endif | |
| 7 | 811 } |
| 812 } | |
| 813 | |
| 814 /* | |
| 815 * Validate curwin->w_cline_height only. | |
| 816 */ | |
| 817 static void | |
| 818 validate_cheight() | |
| 819 { | |
| 820 check_cursor_moved(curwin); | |
| 821 if (!(curwin->w_valid & VALID_CHEIGHT)) | |
| 822 { | |
| 823 #ifdef FEAT_DIFF | |
| 824 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 825 curwin->w_cline_height = plines_nofill(curwin->w_cursor.lnum) | |
| 826 + curwin->w_topfill; | |
| 827 else | |
| 828 #endif | |
| 829 curwin->w_cline_height = plines(curwin->w_cursor.lnum); | |
| 830 #ifdef FEAT_FOLDING | |
| 831 curwin->w_cline_folded = hasFolding(curwin->w_cursor.lnum, NULL, NULL); | |
| 832 #endif | |
| 833 curwin->w_valid |= VALID_CHEIGHT; | |
| 834 } | |
| 835 } | |
| 836 | |
| 837 /* | |
| 1668 | 838 * Validate w_wcol and w_virtcol only. |
| 7 | 839 */ |
| 840 void | |
| 841 validate_cursor_col() | |
| 842 { | |
| 843 colnr_T off; | |
| 844 colnr_T col; | |
|
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|
845 int width; |
| 7 | 846 |
| 847 validate_virtcol(); | |
| 848 if (!(curwin->w_valid & VALID_WCOL)) | |
| 849 { | |
| 850 col = curwin->w_virtcol; | |
| 851 off = curwin_col_off(); | |
| 852 col += off; | |
|
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|
853 width = W_WIDTH(curwin) - off + curwin_col_off2(); |
| 7 | 854 |
| 855 /* long line wrapping, adjust curwin->w_wrow */ | |
| 1668 | 856 if (curwin->w_p_wrap |
| 857 && col >= (colnr_T)W_WIDTH(curwin) | |
|
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|
858 && width > 0) |
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|
859 /* use same formula as what is used in curs_columns() */ |
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|
860 col -= ((col - W_WIDTH(curwin)) / width + 1) * width; |
| 1668 | 861 if (col > (int)curwin->w_leftcol) |
| 862 col -= curwin->w_leftcol; | |
| 863 else | |
| 864 col = 0; | |
| 7 | 865 curwin->w_wcol = col; |
| 1668 | 866 |
| 7 | 867 curwin->w_valid |= VALID_WCOL; |
| 868 } | |
| 869 } | |
| 870 | |
| 871 /* | |
|
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872 * Compute offset of a window, occupied by absolute or relative line number, |
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873 * fold column and sign column (these don't move when scrolling horizontally). |
| 7 | 874 */ |
| 875 int | |
| 876 win_col_off(wp) | |
| 877 win_T *wp; | |
| 878 { | |
|
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|
879 return (((wp->w_p_nu || wp->w_p_rnu) ? number_width(wp) + 1 : 0) |
| 7 | 880 #ifdef FEAT_CMDWIN |
| 881 + (cmdwin_type == 0 || wp != curwin ? 0 : 1) | |
| 882 #endif | |
| 883 #ifdef FEAT_FOLDING | |
| 884 + wp->w_p_fdc | |
| 885 #endif | |
| 886 #ifdef FEAT_SIGNS | |
| 887 + ( | |
| 888 # ifdef FEAT_NETBEANS_INTG | |
| 2210 | 889 /* show glyph gutter in netbeans */ |
| 890 netbeans_active() || | |
| 7 | 891 # endif |
| 892 wp->w_buffer->b_signlist != NULL ? 2 : 0) | |
| 893 #endif | |
| 894 ); | |
| 895 } | |
| 896 | |
| 897 int | |
| 898 curwin_col_off() | |
| 899 { | |
| 900 return win_col_off(curwin); | |
| 901 } | |
| 902 | |
| 903 /* | |
| 904 * Return the difference in column offset for the second screen line of a | |
|
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905 * wrapped line. It's 8 if 'number' or 'relativenumber' is on and 'n' is in |
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|
906 * 'cpoptions'. |
| 7 | 907 */ |
| 908 int | |
| 909 win_col_off2(wp) | |
| 910 win_T *wp; | |
| 911 { | |
|
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|
912 if ((wp->w_p_nu || wp->w_p_rnu) && vim_strchr(p_cpo, CPO_NUMCOL) != NULL) |
| 13 | 913 return number_width(wp) + 1; |
| 7 | 914 return 0; |
| 915 } | |
| 916 | |
| 917 int | |
| 918 curwin_col_off2() | |
| 919 { | |
| 920 return win_col_off2(curwin); | |
| 921 } | |
| 922 | |
| 923 /* | |
| 924 * compute curwin->w_wcol and curwin->w_virtcol. | |
| 925 * Also updates curwin->w_wrow and curwin->w_cline_row. | |
| 926 * Also updates curwin->w_leftcol. | |
| 927 */ | |
| 928 void | |
| 3263 | 929 curs_columns(may_scroll) |
| 930 int may_scroll; /* when TRUE, may scroll horizontally */ | |
| 7 | 931 { |
| 932 int diff; | |
| 933 int extra; /* offset for first screen line */ | |
| 934 int off_left, off_right; | |
| 935 int n; | |
| 936 int p_lines; | |
| 937 int width = 0; | |
| 938 int textwidth; | |
| 939 int new_leftcol; | |
| 940 colnr_T startcol; | |
| 941 colnr_T endcol; | |
| 942 colnr_T prev_skipcol; | |
| 943 | |
| 944 /* | |
| 945 * First make sure that w_topline is valid (after moving the cursor). | |
| 946 */ | |
| 947 update_topline(); | |
| 948 | |
| 949 /* | |
| 950 * Next make sure that w_cline_row is valid. | |
| 951 */ | |
| 952 if (!(curwin->w_valid & VALID_CROW)) | |
| 953 curs_rows(curwin, FALSE); | |
| 954 | |
| 955 /* | |
| 956 * Compute the number of virtual columns. | |
| 957 */ | |
| 958 #ifdef FEAT_FOLDING | |
| 959 if (curwin->w_cline_folded) | |
| 960 /* In a folded line the cursor is always in the first column */ | |
| 961 startcol = curwin->w_virtcol = endcol = curwin->w_leftcol; | |
| 962 else | |
| 963 #endif | |
| 964 getvvcol(curwin, &curwin->w_cursor, | |
| 965 &startcol, &(curwin->w_virtcol), &endcol); | |
| 966 | |
| 967 /* remove '$' from change command when cursor moves onto it */ | |
| 968 if (startcol > dollar_vcol) | |
| 3318 | 969 dollar_vcol = -1; |
| 7 | 970 |
| 971 extra = curwin_col_off(); | |
| 972 curwin->w_wcol = curwin->w_virtcol + extra; | |
| 973 endcol += extra; | |
| 974 | |
| 975 /* | |
| 976 * Now compute w_wrow, counting screen lines from w_cline_row. | |
| 977 */ | |
| 978 curwin->w_wrow = curwin->w_cline_row; | |
| 979 | |
| 980 textwidth = W_WIDTH(curwin) - extra; | |
| 981 if (textwidth <= 0) | |
| 982 { | |
| 983 /* No room for text, put cursor in last char of window. */ | |
| 984 curwin->w_wcol = W_WIDTH(curwin) - 1; | |
| 985 curwin->w_wrow = curwin->w_height - 1; | |
| 986 } | |
| 987 else if (curwin->w_p_wrap | |
| 988 #ifdef FEAT_VERTSPLIT | |
| 989 && curwin->w_width != 0 | |
| 990 #endif | |
| 991 ) | |
| 992 { | |
| 993 width = textwidth + curwin_col_off2(); | |
| 994 | |
| 995 /* long line wrapping, adjust curwin->w_wrow */ | |
| 996 if (curwin->w_wcol >= W_WIDTH(curwin)) | |
| 997 { | |
|
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|
998 /* this same formula is used in validate_cursor_col() */ |
| 7 | 999 n = (curwin->w_wcol - W_WIDTH(curwin)) / width + 1; |
| 1000 curwin->w_wcol -= n * width; | |
| 1001 curwin->w_wrow += n; | |
| 1002 | |
| 1003 #ifdef FEAT_LINEBREAK | |
| 1004 /* When cursor wraps to first char of next line in Insert | |
| 1005 * mode, the 'showbreak' string isn't shown, backup to first | |
| 1006 * column */ | |
| 1007 if (*p_sbr && *ml_get_cursor() == NUL | |
| 1008 && curwin->w_wcol == (int)vim_strsize(p_sbr)) | |
| 1009 curwin->w_wcol = 0; | |
| 1010 #endif | |
| 1011 } | |
| 1012 } | |
| 1013 | |
| 1014 /* No line wrapping: compute curwin->w_leftcol if scrolling is on and line | |
| 1015 * is not folded. | |
| 1016 * If scrolling is off, curwin->w_leftcol is assumed to be 0 */ | |
| 3263 | 1017 else if (may_scroll |
| 7 | 1018 #ifdef FEAT_FOLDING |
| 1019 && !curwin->w_cline_folded | |
| 1020 #endif | |
| 1021 ) | |
| 1022 { | |
| 1023 /* | |
| 1024 * If Cursor is left of the screen, scroll rightwards. | |
| 1025 * If Cursor is right of the screen, scroll leftwards | |
| 1026 * If we get closer to the edge than 'sidescrolloff', scroll a little | |
| 1027 * extra | |
| 1028 */ | |
| 1029 off_left = (int)startcol - (int)curwin->w_leftcol - p_siso; | |
| 1030 off_right = (int)endcol - (int)(curwin->w_leftcol + W_WIDTH(curwin) | |
| 1031 - p_siso) + 1; | |
| 1032 if (off_left < 0 || off_right > 0) | |
| 1033 { | |
| 1034 if (off_left < 0) | |
| 1035 diff = -off_left; | |
| 1036 else | |
| 1037 diff = off_right; | |
| 1038 | |
| 1039 /* When far off or not enough room on either side, put cursor in | |
| 1040 * middle of window. */ | |
| 1041 if (p_ss == 0 || diff >= textwidth / 2 || off_right >= off_left) | |
| 1042 new_leftcol = curwin->w_wcol - extra - textwidth / 2; | |
| 1043 else | |
| 1044 { | |
| 1045 if (diff < p_ss) | |
| 1046 diff = p_ss; | |
| 1047 if (off_left < 0) | |
| 1048 new_leftcol = curwin->w_leftcol - diff; | |
| 1049 else | |
| 1050 new_leftcol = curwin->w_leftcol + diff; | |
| 1051 } | |
| 1052 if (new_leftcol < 0) | |
| 1053 new_leftcol = 0; | |
| 1054 if (new_leftcol != (int)curwin->w_leftcol) | |
| 1055 { | |
| 1056 curwin->w_leftcol = new_leftcol; | |
| 1057 /* screen has to be redrawn with new curwin->w_leftcol */ | |
| 1058 redraw_later(NOT_VALID); | |
| 1059 } | |
| 1060 } | |
| 1061 curwin->w_wcol -= curwin->w_leftcol; | |
| 1062 } | |
| 1063 else if (curwin->w_wcol > (int)curwin->w_leftcol) | |
| 1064 curwin->w_wcol -= curwin->w_leftcol; | |
| 1065 else | |
| 1066 curwin->w_wcol = 0; | |
| 1067 | |
| 1068 #ifdef FEAT_DIFF | |
| 1069 /* Skip over filler lines. At the top use w_topfill, there | |
| 1070 * may be some filler lines above the window. */ | |
| 1071 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 1072 curwin->w_wrow += curwin->w_topfill; | |
| 1073 else | |
| 1074 curwin->w_wrow += diff_check_fill(curwin, curwin->w_cursor.lnum); | |
| 1075 #endif | |
| 1076 | |
| 1077 prev_skipcol = curwin->w_skipcol; | |
| 1078 | |
| 1079 p_lines = 0; | |
| 1080 if ((curwin->w_wrow >= curwin->w_height | |
| 1081 || ((prev_skipcol > 0 | |
| 1082 || curwin->w_wrow + p_so >= curwin->w_height) | |
| 1083 && (p_lines = | |
| 1084 #ifdef FEAT_DIFF | |
| 1085 plines_win_nofill | |
| 1086 #else | |
| 1087 plines_win | |
| 1088 #endif | |
| 1089 (curwin, curwin->w_cursor.lnum, FALSE)) | |
| 1090 - 1 >= curwin->w_height)) | |
| 1091 && curwin->w_height != 0 | |
| 1092 && curwin->w_cursor.lnum == curwin->w_topline | |
| 1093 && width > 0 | |
| 1094 #ifdef FEAT_VERTSPLIT | |
| 1095 && curwin->w_width != 0 | |
| 1096 #endif | |
| 1097 ) | |
| 1098 { | |
| 1099 /* Cursor past end of screen. Happens with a single line that does | |
| 1100 * not fit on screen. Find a skipcol to show the text around the | |
| 1101 * cursor. Avoid scrolling all the time. compute value of "extra": | |
| 1102 * 1: Less than "p_so" lines above | |
| 1103 * 2: Less than "p_so" lines below | |
| 1104 * 3: both of them */ | |
| 1105 extra = 0; | |
| 1106 if (curwin->w_skipcol + p_so * width > curwin->w_virtcol) | |
| 1107 extra = 1; | |
| 1108 /* Compute last display line of the buffer line that we want at the | |
| 1109 * bottom of the window. */ | |
| 1110 if (p_lines == 0) | |
| 1111 p_lines = plines_win(curwin, curwin->w_cursor.lnum, FALSE); | |
| 1112 --p_lines; | |
| 1113 if (p_lines > curwin->w_wrow + p_so) | |
| 1114 n = curwin->w_wrow + p_so; | |
| 1115 else | |
| 1116 n = p_lines; | |
| 1117 if ((colnr_T)n >= curwin->w_height + curwin->w_skipcol / width) | |
| 1118 extra += 2; | |
| 1119 | |
| 1120 if (extra == 3 || p_lines < p_so * 2) | |
| 1121 { | |
| 1122 /* not enough room for 'scrolloff', put cursor in the middle */ | |
| 1123 n = curwin->w_virtcol / width; | |
| 1124 if (n > curwin->w_height / 2) | |
| 1125 n -= curwin->w_height / 2; | |
| 1126 else | |
| 1127 n = 0; | |
| 1128 /* don't skip more than necessary */ | |
| 1129 if (n > p_lines - curwin->w_height + 1) | |
| 1130 n = p_lines - curwin->w_height + 1; | |
| 1131 curwin->w_skipcol = n * width; | |
| 1132 } | |
| 1133 else if (extra == 1) | |
| 1134 { | |
| 1135 /* less then 'scrolloff' lines above, decrease skipcol */ | |
| 1136 extra = (curwin->w_skipcol + p_so * width - curwin->w_virtcol | |
| 1137 + width - 1) / width; | |
| 1138 if (extra > 0) | |
| 1139 { | |
| 1140 if ((colnr_T)(extra * width) > curwin->w_skipcol) | |
| 1141 extra = curwin->w_skipcol / width; | |
| 1142 curwin->w_skipcol -= extra * width; | |
| 1143 } | |
| 1144 } | |
| 1145 else if (extra == 2) | |
| 1146 { | |
| 1147 /* less then 'scrolloff' lines below, increase skipcol */ | |
| 1148 endcol = (n - curwin->w_height + 1) * width; | |
| 1149 while (endcol > curwin->w_virtcol) | |
| 1150 endcol -= width; | |
| 1151 if (endcol > curwin->w_skipcol) | |
| 1152 curwin->w_skipcol = endcol; | |
| 1153 } | |
| 1154 | |
| 1155 curwin->w_wrow -= curwin->w_skipcol / width; | |
| 1156 if (curwin->w_wrow >= curwin->w_height) | |
| 1157 { | |
| 1158 /* small window, make sure cursor is in it */ | |
| 1159 extra = curwin->w_wrow - curwin->w_height + 1; | |
| 1160 curwin->w_skipcol += extra * width; | |
| 1161 curwin->w_wrow -= extra; | |
| 1162 } | |
| 1163 | |
| 1164 extra = ((int)prev_skipcol - (int)curwin->w_skipcol) / width; | |
| 1165 if (extra > 0) | |
| 1166 win_ins_lines(curwin, 0, extra, FALSE, FALSE); | |
| 1167 else if (extra < 0) | |
| 1168 win_del_lines(curwin, 0, -extra, FALSE, FALSE); | |
| 1169 } | |
| 1170 else | |
| 1171 curwin->w_skipcol = 0; | |
| 1172 if (prev_skipcol != curwin->w_skipcol) | |
| 1173 redraw_later(NOT_VALID); | |
| 1174 | |
|
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1175 /* Redraw when w_row changes and 'relativenumber' is set */ |
|
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1176 if (((curwin->w_valid & VALID_WROW) == 0 && (curwin->w_p_rnu |
| 740 | 1177 #ifdef FEAT_SYN_HL |
|
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1178 /* or when w_row changes and 'cursorline' is set. */ |
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1179 || curwin->w_p_cul |
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1180 #endif |
|
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1181 )) |
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1182 #ifdef FEAT_SYN_HL |
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1183 /* or when w_virtcol changes and 'cursorcolumn' is set */ |
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1184 || (curwin->w_p_cuc && (curwin->w_valid & VALID_VIRTCOL) == 0) |
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1185 #endif |
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1186 ) |
| 752 | 1187 # ifdef FEAT_INS_EXPAND |
|
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1188 if (!pum_visible()) |
| 752 | 1189 # endif |
|
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|
1190 redraw_later(SOME_VALID); |
| 740 | 1191 |
| 7 | 1192 curwin->w_valid |= VALID_WCOL|VALID_WROW|VALID_VIRTCOL; |
| 1193 } | |
| 1194 | |
| 1195 /* | |
| 1196 * Scroll the current window down by "line_count" logical lines. "CTRL-Y" | |
| 1197 */ | |
| 1198 void | |
| 1199 scrolldown(line_count, byfold) | |
| 1200 long line_count; | |
| 1877 | 1201 int byfold UNUSED; /* TRUE: count a closed fold as one line */ |
| 7 | 1202 { |
| 1203 long done = 0; /* total # of physical lines done */ | |
| 1204 int wrow; | |
| 1205 int moved = FALSE; | |
| 1206 | |
| 1207 #ifdef FEAT_FOLDING | |
| 1208 linenr_T first; | |
| 1209 | |
| 1210 /* Make sure w_topline is at the first of a sequence of folded lines. */ | |
| 1211 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 1212 #endif | |
| 1213 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1214 while (line_count-- > 0) | |
| 1215 { | |
| 1216 #ifdef FEAT_DIFF | |
| 1980 | 1217 if (curwin->w_topfill < diff_check(curwin, curwin->w_topline) |
| 1218 && curwin->w_topfill < curwin->w_height - 1) | |
| 7 | 1219 { |
| 1220 ++curwin->w_topfill; | |
| 1221 ++done; | |
| 1222 } | |
| 1223 else | |
| 1224 #endif | |
| 1225 { | |
| 1226 if (curwin->w_topline == 1) | |
| 1227 break; | |
| 1228 --curwin->w_topline; | |
| 1229 #ifdef FEAT_DIFF | |
| 1230 curwin->w_topfill = 0; | |
| 1231 #endif | |
| 1232 #ifdef FEAT_FOLDING | |
| 1233 /* A sequence of folded lines only counts for one logical line */ | |
| 1234 if (hasFolding(curwin->w_topline, &first, NULL)) | |
| 1235 { | |
| 1236 ++done; | |
| 1237 if (!byfold) | |
| 1238 line_count -= curwin->w_topline - first - 1; | |
| 1239 curwin->w_botline -= curwin->w_topline - first; | |
| 1240 curwin->w_topline = first; | |
| 1241 } | |
| 1242 else | |
| 1243 #endif | |
| 1244 #ifdef FEAT_DIFF | |
| 1245 done += plines_nofill(curwin->w_topline); | |
| 1246 #else | |
| 1247 done += plines(curwin->w_topline); | |
| 1248 #endif | |
| 1249 } | |
| 1250 --curwin->w_botline; /* approximate w_botline */ | |
| 1251 invalidate_botline(); | |
| 1252 } | |
| 1253 curwin->w_wrow += done; /* keep w_wrow updated */ | |
| 1254 curwin->w_cline_row += done; /* keep w_cline_row updated */ | |
| 1255 | |
| 1256 #ifdef FEAT_DIFF | |
| 1257 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 1258 curwin->w_cline_row = 0; | |
| 1259 check_topfill(curwin, TRUE); | |
| 1260 #endif | |
| 1261 | |
| 1262 /* | |
| 1263 * Compute the row number of the last row of the cursor line | |
| 1264 * and move the cursor onto the displayed part of the window. | |
| 1265 */ | |
| 1266 wrow = curwin->w_wrow; | |
| 1267 if (curwin->w_p_wrap | |
| 1268 #ifdef FEAT_VERTSPLIT | |
| 1269 && curwin->w_width != 0 | |
| 1270 #endif | |
| 1271 ) | |
| 1272 { | |
| 1273 validate_virtcol(); | |
| 1274 validate_cheight(); | |
| 1275 wrow += curwin->w_cline_height - 1 - | |
| 1276 curwin->w_virtcol / W_WIDTH(curwin); | |
| 1277 } | |
| 1278 while (wrow >= curwin->w_height && curwin->w_cursor.lnum > 1) | |
| 1279 { | |
| 1280 #ifdef FEAT_FOLDING | |
| 1281 if (hasFolding(curwin->w_cursor.lnum, &first, NULL)) | |
| 1282 { | |
| 1283 --wrow; | |
| 1284 if (first == 1) | |
| 1285 curwin->w_cursor.lnum = 1; | |
| 1286 else | |
| 1287 curwin->w_cursor.lnum = first - 1; | |
| 1288 } | |
| 1289 else | |
| 1290 #endif | |
| 1291 wrow -= plines(curwin->w_cursor.lnum--); | |
| 1292 curwin->w_valid &= | |
| 1293 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
| 1294 moved = TRUE; | |
| 1295 } | |
| 1296 if (moved) | |
| 1297 { | |
| 1298 #ifdef FEAT_FOLDING | |
| 1299 /* Move cursor to first line of closed fold. */ | |
| 1300 foldAdjustCursor(); | |
| 1301 #endif | |
| 1302 coladvance(curwin->w_curswant); | |
| 1303 } | |
| 1304 } | |
| 1305 | |
| 1306 /* | |
| 1307 * Scroll the current window up by "line_count" logical lines. "CTRL-E" | |
| 1308 */ | |
| 1309 void | |
| 1310 scrollup(line_count, byfold) | |
| 1311 long line_count; | |
| 1877 | 1312 int byfold UNUSED; /* TRUE: count a closed fold as one line */ |
| 7 | 1313 { |
| 1314 #if defined(FEAT_FOLDING) || defined(FEAT_DIFF) | |
| 1315 linenr_T lnum; | |
| 1316 | |
| 1317 if ( | |
| 1318 # ifdef FEAT_FOLDING | |
| 1319 (byfold && hasAnyFolding(curwin)) | |
| 1320 # ifdef FEAT_DIFF | |
| 1321 || | |
| 1322 # endif | |
| 1323 # endif | |
| 1324 # ifdef FEAT_DIFF | |
| 1325 curwin->w_p_diff | |
| 1326 # endif | |
| 1327 ) | |
| 1328 { | |
| 1329 /* count each sequence of folded lines as one logical line */ | |
| 1330 lnum = curwin->w_topline; | |
| 1331 while (line_count--) | |
| 1332 { | |
| 1333 # ifdef FEAT_DIFF | |
| 1334 if (curwin->w_topfill > 0) | |
| 1335 --curwin->w_topfill; | |
| 1336 else | |
| 1337 # endif | |
| 1338 { | |
| 1339 # ifdef FEAT_FOLDING | |
| 1340 if (byfold) | |
| 1341 (void)hasFolding(lnum, NULL, &lnum); | |
| 1342 # endif | |
| 1343 if (lnum >= curbuf->b_ml.ml_line_count) | |
| 1344 break; | |
| 1345 ++lnum; | |
| 1346 # ifdef FEAT_DIFF | |
| 1347 curwin->w_topfill = diff_check_fill(curwin, lnum); | |
| 1348 # endif | |
| 1349 } | |
| 1350 } | |
| 1351 /* approximate w_botline */ | |
| 1352 curwin->w_botline += lnum - curwin->w_topline; | |
| 1353 curwin->w_topline = lnum; | |
| 1354 } | |
| 1355 else | |
| 1356 #endif | |
| 1357 { | |
| 1358 curwin->w_topline += line_count; | |
| 1359 curwin->w_botline += line_count; /* approximate w_botline */ | |
| 1360 } | |
| 1361 | |
| 1362 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
| 1363 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
| 1364 if (curwin->w_botline > curbuf->b_ml.ml_line_count + 1) | |
| 1365 curwin->w_botline = curbuf->b_ml.ml_line_count + 1; | |
| 1366 | |
| 1367 #ifdef FEAT_DIFF | |
| 1368 check_topfill(curwin, FALSE); | |
| 1369 #endif | |
| 1370 | |
| 1371 #ifdef FEAT_FOLDING | |
| 1372 if (hasAnyFolding(curwin)) | |
| 1373 /* Make sure w_topline is at the first of a sequence of folded lines. */ | |
| 1374 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 1375 #endif | |
| 1376 | |
| 1377 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1378 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 1379 { | |
| 1380 curwin->w_cursor.lnum = curwin->w_topline; | |
| 1381 curwin->w_valid &= | |
| 1382 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
| 1383 coladvance(curwin->w_curswant); | |
| 1384 } | |
| 1385 } | |
| 1386 | |
| 1387 #ifdef FEAT_DIFF | |
| 1388 /* | |
| 1389 * Don't end up with too many filler lines in the window. | |
| 1390 */ | |
| 1391 void | |
| 1392 check_topfill(wp, down) | |
| 1393 win_T *wp; | |
| 1394 int down; /* when TRUE scroll down when not enough space */ | |
| 1395 { | |
| 1396 int n; | |
| 1397 | |
| 1398 if (wp->w_topfill > 0) | |
| 1399 { | |
| 1400 n = plines_win_nofill(wp, wp->w_topline, TRUE); | |
| 1401 if (wp->w_topfill + n > wp->w_height) | |
| 1402 { | |
| 1403 if (down && wp->w_topline > 1) | |
| 1404 { | |
| 1405 --wp->w_topline; | |
| 1406 wp->w_topfill = 0; | |
| 1407 } | |
| 1408 else | |
| 1409 { | |
| 1410 wp->w_topfill = wp->w_height - n; | |
| 1411 if (wp->w_topfill < 0) | |
| 1412 wp->w_topfill = 0; | |
| 1413 } | |
| 1414 } | |
| 1415 } | |
| 1416 } | |
| 1417 | |
| 1418 /* | |
| 1419 * Use as many filler lines as possible for w_topline. Make sure w_topline | |
| 1420 * is still visible. | |
| 1421 */ | |
| 1422 static void | |
| 1423 max_topfill() | |
| 1424 { | |
| 1425 int n; | |
| 1426 | |
| 1427 n = plines_nofill(curwin->w_topline); | |
| 1428 if (n >= curwin->w_height) | |
| 1429 curwin->w_topfill = 0; | |
| 1430 else | |
| 1431 { | |
| 1432 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 1433 if (curwin->w_topfill + n > curwin->w_height) | |
| 1434 curwin->w_topfill = curwin->w_height - n; | |
| 1435 } | |
| 1436 } | |
| 1437 #endif | |
| 1438 | |
| 1439 #if defined(FEAT_INS_EXPAND) || defined(PROTO) | |
| 1440 /* | |
| 1441 * Scroll the screen one line down, but don't do it if it would move the | |
| 1442 * cursor off the screen. | |
| 1443 */ | |
| 1444 void | |
| 1445 scrolldown_clamp() | |
| 1446 { | |
| 1447 int end_row; | |
| 1448 #ifdef FEAT_DIFF | |
| 1449 int can_fill = (curwin->w_topfill | |
| 1450 < diff_check_fill(curwin, curwin->w_topline)); | |
| 1451 #endif | |
| 1452 | |
| 1453 if (curwin->w_topline <= 1 | |
| 1454 #ifdef FEAT_DIFF | |
| 1455 && !can_fill | |
| 1456 #endif | |
| 1457 ) | |
| 1458 return; | |
| 1459 | |
| 1460 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1461 | |
| 1462 /* | |
| 1463 * Compute the row number of the last row of the cursor line | |
| 1464 * and make sure it doesn't go off the screen. Make sure the cursor | |
| 1465 * doesn't go past 'scrolloff' lines from the screen end. | |
| 1466 */ | |
| 1467 end_row = curwin->w_wrow; | |
| 1468 #ifdef FEAT_DIFF | |
| 1469 if (can_fill) | |
| 1470 ++end_row; | |
| 1471 else | |
| 1472 end_row += plines_nofill(curwin->w_topline - 1); | |
| 1473 #else | |
| 1474 end_row += plines(curwin->w_topline - 1); | |
| 1475 #endif | |
| 1476 if (curwin->w_p_wrap | |
| 1477 #ifdef FEAT_VERTSPLIT | |
| 1478 && curwin->w_width != 0 | |
| 1479 #endif | |
| 1480 ) | |
| 1481 { | |
| 1482 validate_cheight(); | |
| 1483 validate_virtcol(); | |
| 1484 end_row += curwin->w_cline_height - 1 - | |
| 1485 curwin->w_virtcol / W_WIDTH(curwin); | |
| 1486 } | |
| 1487 if (end_row < curwin->w_height - p_so) | |
| 1488 { | |
| 1489 #ifdef FEAT_DIFF | |
| 1490 if (can_fill) | |
| 1491 { | |
| 1492 ++curwin->w_topfill; | |
| 1493 check_topfill(curwin, TRUE); | |
| 1494 } | |
| 1495 else | |
| 1496 { | |
| 1497 --curwin->w_topline; | |
| 1498 curwin->w_topfill = 0; | |
| 1499 } | |
| 1500 #else | |
| 1501 --curwin->w_topline; | |
| 1502 #endif | |
| 1503 #ifdef FEAT_FOLDING | |
| 1504 hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 1505 #endif | |
| 1506 --curwin->w_botline; /* approximate w_botline */ | |
| 1507 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1508 } | |
| 1509 } | |
| 1510 | |
| 1511 /* | |
| 1512 * Scroll the screen one line up, but don't do it if it would move the cursor | |
| 1513 * off the screen. | |
| 1514 */ | |
| 1515 void | |
| 1516 scrollup_clamp() | |
| 1517 { | |
| 1518 int start_row; | |
| 1519 | |
| 1520 if (curwin->w_topline == curbuf->b_ml.ml_line_count | |
| 1521 #ifdef FEAT_DIFF | |
| 1522 && curwin->w_topfill == 0 | |
| 1523 #endif | |
| 1524 ) | |
| 1525 return; | |
| 1526 | |
| 1527 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1528 | |
| 1529 /* | |
| 1530 * Compute the row number of the first row of the cursor line | |
| 1531 * and make sure it doesn't go off the screen. Make sure the cursor | |
| 1532 * doesn't go before 'scrolloff' lines from the screen start. | |
| 1533 */ | |
| 1534 #ifdef FEAT_DIFF | |
| 1535 start_row = curwin->w_wrow - plines_nofill(curwin->w_topline) | |
| 1536 - curwin->w_topfill; | |
| 1537 #else | |
| 1538 start_row = curwin->w_wrow - plines(curwin->w_topline); | |
| 1539 #endif | |
| 1540 if (curwin->w_p_wrap | |
| 1541 #ifdef FEAT_VERTSPLIT | |
| 1542 && curwin->w_width != 0 | |
| 1543 #endif | |
| 1544 ) | |
| 1545 { | |
| 1546 validate_virtcol(); | |
| 1547 start_row -= curwin->w_virtcol / W_WIDTH(curwin); | |
| 1548 } | |
| 1549 if (start_row >= p_so) | |
| 1550 { | |
| 1551 #ifdef FEAT_DIFF | |
| 1552 if (curwin->w_topfill > 0) | |
| 1553 --curwin->w_topfill; | |
| 1554 else | |
| 1555 #endif | |
| 36 | 1556 { |
| 1557 #ifdef FEAT_FOLDING | |
| 1558 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
| 1559 #endif | |
| 7 | 1560 ++curwin->w_topline; |
| 36 | 1561 } |
| 7 | 1562 ++curwin->w_botline; /* approximate w_botline */ |
| 1563 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1564 } | |
| 1565 } | |
| 1566 #endif /* FEAT_INS_EXPAND */ | |
| 1567 | |
| 1568 /* | |
| 1569 * Add one line above "lp->lnum". This can be a filler line, a closed fold or | |
| 1570 * a (wrapped) text line. Uses and sets "lp->fill". | |
| 1571 * Returns the height of the added line in "lp->height". | |
|
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diff
changeset
|
1572 * Lines above the first one are incredibly high: MAXCOL. |
| 7 | 1573 */ |
| 1574 static void | |
| 1575 topline_back(lp) | |
| 1576 lineoff_T *lp; | |
| 1577 { | |
| 1578 #ifdef FEAT_DIFF | |
| 1579 if (lp->fill < diff_check_fill(curwin, lp->lnum)) | |
| 1580 { | |
| 1581 /* Add a filler line. */ | |
| 1582 ++lp->fill; | |
| 1583 lp->height = 1; | |
| 1584 } | |
| 1585 else | |
| 1586 #endif | |
| 1587 { | |
| 1588 --lp->lnum; | |
| 1589 #ifdef FEAT_DIFF | |
| 1590 lp->fill = 0; | |
| 1591 #endif | |
| 1592 if (lp->lnum < 1) | |
| 1593 lp->height = MAXCOL; | |
| 1594 else | |
| 1595 #ifdef FEAT_FOLDING | |
| 1596 if (hasFolding(lp->lnum, &lp->lnum, NULL)) | |
| 1597 /* Add a closed fold */ | |
| 1598 lp->height = 1; | |
| 1599 else | |
| 1600 #endif | |
| 1601 { | |
| 1602 #ifdef FEAT_DIFF | |
| 1603 lp->height = plines_nofill(lp->lnum); | |
| 1604 #else | |
| 1605 lp->height = plines(lp->lnum); | |
| 1606 #endif | |
| 1607 } | |
| 1608 } | |
| 1609 } | |
| 1610 | |
| 1611 /* | |
| 1612 * Add one line below "lp->lnum". This can be a filler line, a closed fold or | |
| 1613 * a (wrapped) text line. Uses and sets "lp->fill". | |
| 1614 * Returns the height of the added line in "lp->height". | |
| 1615 * Lines below the last one are incredibly high. | |
| 1616 */ | |
| 1617 static void | |
| 1618 botline_forw(lp) | |
| 1619 lineoff_T *lp; | |
| 1620 { | |
| 1621 #ifdef FEAT_DIFF | |
| 1622 if (lp->fill < diff_check_fill(curwin, lp->lnum + 1)) | |
| 1623 { | |
| 1624 /* Add a filler line. */ | |
| 1625 ++lp->fill; | |
| 1626 lp->height = 1; | |
| 1627 } | |
| 1628 else | |
| 1629 #endif | |
| 1630 { | |
| 1631 ++lp->lnum; | |
| 1632 #ifdef FEAT_DIFF | |
| 1633 lp->fill = 0; | |
| 1634 #endif | |
| 1635 if (lp->lnum > curbuf->b_ml.ml_line_count) | |
| 1636 lp->height = MAXCOL; | |
| 1637 else | |
| 1638 #ifdef FEAT_FOLDING | |
| 1639 if (hasFolding(lp->lnum, NULL, &lp->lnum)) | |
| 1640 /* Add a closed fold */ | |
| 1641 lp->height = 1; | |
| 1642 else | |
| 1643 #endif | |
| 1644 { | |
| 1645 #ifdef FEAT_DIFF | |
| 1646 lp->height = plines_nofill(lp->lnum); | |
| 1647 #else | |
| 1648 lp->height = plines(lp->lnum); | |
| 1649 #endif | |
| 1650 } | |
| 1651 } | |
| 1652 } | |
| 1653 | |
| 1654 #ifdef FEAT_DIFF | |
| 1655 /* | |
| 1656 * Switch from including filler lines below lp->lnum to including filler | |
| 1657 * lines above loff.lnum + 1. This keeps pointing to the same line. | |
| 1658 * When there are no filler lines nothing changes. | |
| 1659 */ | |
| 1660 static void | |
| 1661 botline_topline(lp) | |
| 1662 lineoff_T *lp; | |
| 1663 { | |
| 1664 if (lp->fill > 0) | |
| 1665 { | |
| 1666 ++lp->lnum; | |
| 1667 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
| 1668 } | |
| 1669 } | |
| 1670 | |
| 1671 /* | |
| 1672 * Switch from including filler lines above lp->lnum to including filler | |
| 1673 * lines below loff.lnum - 1. This keeps pointing to the same line. | |
| 1674 * When there are no filler lines nothing changes. | |
| 1675 */ | |
| 1676 static void | |
| 1677 topline_botline(lp) | |
| 1678 lineoff_T *lp; | |
| 1679 { | |
| 1680 if (lp->fill > 0) | |
| 1681 { | |
| 1682 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
| 1683 --lp->lnum; | |
| 1684 } | |
| 1685 } | |
| 1686 #endif | |
| 1687 | |
| 1688 /* | |
| 1689 * Recompute topline to put the cursor at the top of the window. | |
| 1690 * Scroll at least "min_scroll" lines. | |
| 1691 * If "always" is TRUE, always set topline (for "zt"). | |
| 1692 */ | |
| 1693 void | |
| 1694 scroll_cursor_top(min_scroll, always) | |
| 1695 int min_scroll; | |
| 1696 int always; | |
| 1697 { | |
| 1698 int scrolled = 0; | |
| 1699 int extra = 0; | |
| 1700 int used; | |
| 1701 int i; | |
| 1702 linenr_T top; /* just above displayed lines */ | |
| 1703 linenr_T bot; /* just below displayed lines */ | |
| 1704 linenr_T old_topline = curwin->w_topline; | |
| 1705 #ifdef FEAT_DIFF | |
| 1706 linenr_T old_topfill = curwin->w_topfill; | |
| 1707 #endif | |
| 1708 linenr_T new_topline; | |
| 1709 int off = p_so; | |
| 1710 | |
| 1711 #ifdef FEAT_MOUSE | |
| 1712 if (mouse_dragging > 0) | |
| 1713 off = mouse_dragging - 1; | |
| 1714 #endif | |
| 1715 | |
| 1716 /* | |
| 1717 * Decrease topline until: | |
| 1718 * - it has become 1 | |
| 1719 * - (part of) the cursor line is moved off the screen or | |
| 1720 * - moved at least 'scrolljump' lines and | |
| 1721 * - at least 'scrolloff' lines above and below the cursor | |
| 1722 */ | |
| 1723 validate_cheight(); | |
| 1724 used = curwin->w_cline_height; | |
| 1725 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 1726 scrolled = used; | |
| 1727 | |
| 1728 #ifdef FEAT_FOLDING | |
| 1729 if (hasFolding(curwin->w_cursor.lnum, &top, &bot)) | |
| 1730 { | |
| 1731 --top; | |
| 1732 ++bot; | |
| 1733 } | |
| 1734 else | |
| 1735 #endif | |
| 1736 { | |
| 1737 top = curwin->w_cursor.lnum - 1; | |
| 1738 bot = curwin->w_cursor.lnum + 1; | |
| 1739 } | |
| 1740 new_topline = top + 1; | |
| 1741 | |
| 1742 #ifdef FEAT_DIFF | |
| 1743 /* count filler lines of the cursor window as context */ | |
| 1744 i = diff_check_fill(curwin, curwin->w_cursor.lnum); | |
| 1745 used += i; | |
| 1746 extra += i; | |
| 1747 #endif | |
| 1748 | |
| 1749 /* | |
| 1750 * Check if the lines from "top" to "bot" fit in the window. If they do, | |
| 1751 * set new_topline and advance "top" and "bot" to include more lines. | |
| 1752 */ | |
| 1753 while (top > 0) | |
| 1754 { | |
| 1755 #ifdef FEAT_FOLDING | |
| 1756 if (hasFolding(top, &top, NULL)) | |
| 1757 /* count one logical line for a sequence of folded lines */ | |
| 1758 i = 1; | |
| 1759 else | |
| 1760 #endif | |
| 1761 i = plines(top); | |
| 1762 used += i; | |
| 1763 if (extra + i <= off && bot < curbuf->b_ml.ml_line_count) | |
| 1764 { | |
| 1765 #ifdef FEAT_FOLDING | |
| 1766 if (hasFolding(bot, NULL, &bot)) | |
| 1767 /* count one logical line for a sequence of folded lines */ | |
| 1768 ++used; | |
| 1769 else | |
| 1770 #endif | |
| 1771 used += plines(bot); | |
| 1772 } | |
| 1773 if (used > curwin->w_height) | |
| 1774 break; | |
| 1775 if (top < curwin->w_topline) | |
| 1776 scrolled += i; | |
| 1777 | |
| 1778 /* | |
| 1779 * If scrolling is needed, scroll at least 'sj' lines. | |
| 1780 */ | |
| 1781 if ((new_topline >= curwin->w_topline || scrolled > min_scroll) | |
| 1782 && extra >= off) | |
| 1783 break; | |
| 1784 | |
| 1785 extra += i; | |
| 1786 new_topline = top; | |
| 1787 --top; | |
| 1788 ++bot; | |
| 1789 } | |
| 1790 | |
| 1791 /* | |
| 1792 * If we don't have enough space, put cursor in the middle. | |
| 1793 * This makes sure we get the same position when using "k" and "j" | |
| 1794 * in a small window. | |
| 1795 */ | |
| 1796 if (used > curwin->w_height) | |
| 1797 scroll_cursor_halfway(FALSE); | |
| 1798 else | |
| 1799 { | |
| 1800 /* | |
| 1801 * If "always" is FALSE, only adjust topline to a lower value, higher | |
| 1802 * value may happen with wrapping lines | |
| 1803 */ | |
| 1804 if (new_topline < curwin->w_topline || always) | |
| 1805 curwin->w_topline = new_topline; | |
| 1806 if (curwin->w_topline > curwin->w_cursor.lnum) | |
| 1807 curwin->w_topline = curwin->w_cursor.lnum; | |
| 1808 #ifdef FEAT_DIFF | |
| 1809 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 1810 if (curwin->w_topfill > 0 && extra > off) | |
| 1811 { | |
| 1812 curwin->w_topfill -= extra - off; | |
| 1813 if (curwin->w_topfill < 0) | |
| 1814 curwin->w_topfill = 0; | |
| 1815 } | |
| 1816 check_topfill(curwin, FALSE); | |
| 1817 #endif | |
| 1818 if (curwin->w_topline != old_topline | |
| 1819 #ifdef FEAT_DIFF | |
| 1820 || curwin->w_topfill != old_topfill | |
| 1821 #endif | |
| 1822 ) | |
| 1823 curwin->w_valid &= | |
| 1824 ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 1825 curwin->w_valid |= VALID_TOPLINE; | |
| 1826 } | |
| 1827 } | |
| 1828 | |
| 1829 /* | |
| 1830 * Set w_empty_rows and w_filler_rows for window "wp", having used up "used" | |
| 1831 * screen lines for text lines. | |
| 1832 */ | |
| 1833 void | |
| 1834 set_empty_rows(wp, used) | |
| 1835 win_T *wp; | |
| 1836 int used; | |
| 1837 { | |
| 1838 #ifdef FEAT_DIFF | |
| 1839 wp->w_filler_rows = 0; | |
| 1840 #endif | |
| 1841 if (used == 0) | |
| 1842 wp->w_empty_rows = 0; /* single line that doesn't fit */ | |
| 1843 else | |
| 1844 { | |
| 1845 wp->w_empty_rows = wp->w_height - used; | |
| 1846 #ifdef FEAT_DIFF | |
| 1847 if (wp->w_botline <= wp->w_buffer->b_ml.ml_line_count) | |
| 1848 { | |
| 1849 wp->w_filler_rows = diff_check_fill(wp, wp->w_botline); | |
| 1850 if (wp->w_empty_rows > wp->w_filler_rows) | |
| 1851 wp->w_empty_rows -= wp->w_filler_rows; | |
| 1852 else | |
| 1853 { | |
| 1854 wp->w_filler_rows = wp->w_empty_rows; | |
| 1855 wp->w_empty_rows = 0; | |
| 1856 } | |
| 1857 } | |
| 1858 #endif | |
| 1859 } | |
| 1860 } | |
| 1861 | |
| 1862 /* | |
| 1863 * Recompute topline to put the cursor at the bottom of the window. | |
| 1864 * Scroll at least "min_scroll" lines. | |
| 1865 * If "set_topbot" is TRUE, set topline and botline first (for "zb"). | |
| 1866 * This is messy stuff!!! | |
| 1867 */ | |
| 1868 void | |
| 1869 scroll_cursor_bot(min_scroll, set_topbot) | |
| 1870 int min_scroll; | |
| 1871 int set_topbot; | |
| 1872 { | |
| 1873 int used; | |
| 1874 int scrolled = 0; | |
| 1875 int extra = 0; | |
| 1876 int i; | |
| 1877 linenr_T line_count; | |
| 1878 linenr_T old_topline = curwin->w_topline; | |
| 1879 lineoff_T loff; | |
| 1880 lineoff_T boff; | |
| 1881 #ifdef FEAT_DIFF | |
| 1882 int old_topfill = curwin->w_topfill; | |
| 1883 int fill_below_window; | |
| 1884 #endif | |
| 1885 linenr_T old_botline = curwin->w_botline; | |
| 1886 linenr_T old_valid = curwin->w_valid; | |
| 1887 int old_empty_rows = curwin->w_empty_rows; | |
| 1888 linenr_T cln; /* Cursor Line Number */ | |
| 1889 | |
| 1890 cln = curwin->w_cursor.lnum; | |
| 1891 if (set_topbot) | |
| 1892 { | |
| 1893 used = 0; | |
| 1894 curwin->w_botline = cln + 1; | |
| 1895 #ifdef FEAT_DIFF | |
| 1896 loff.fill = 0; | |
| 1897 #endif | |
| 1898 for (curwin->w_topline = curwin->w_botline; | |
| 1899 curwin->w_topline > 1; | |
| 1900 curwin->w_topline = loff.lnum) | |
| 1901 { | |
| 1902 loff.lnum = curwin->w_topline; | |
| 1903 topline_back(&loff); | |
|
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1904 if (loff.height == MAXCOL || used + loff.height > curwin->w_height) |
| 7 | 1905 break; |
| 1906 used += loff.height; | |
| 1907 #ifdef FEAT_DIFF | |
| 1908 curwin->w_topfill = loff.fill; | |
| 1909 #endif | |
| 1910 } | |
| 1911 set_empty_rows(curwin, used); | |
| 1912 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 1913 if (curwin->w_topline != old_topline | |
| 1914 #ifdef FEAT_DIFF | |
| 1915 || curwin->w_topfill != old_topfill | |
| 1916 #endif | |
| 1917 ) | |
| 1918 curwin->w_valid &= ~(VALID_WROW|VALID_CROW); | |
| 1919 } | |
| 1920 else | |
| 1921 validate_botline(); | |
| 1922 | |
| 1923 /* The lines of the cursor line itself are always used. */ | |
| 1924 #ifdef FEAT_DIFF | |
| 1925 used = plines_nofill(cln); | |
| 1926 #else | |
| 1927 validate_cheight(); | |
| 1928 used = curwin->w_cline_height; | |
| 1929 #endif | |
| 1930 | |
| 1931 /* If the cursor is below botline, we will at least scroll by the height | |
| 1932 * of the cursor line. Correct for empty lines, which are really part of | |
| 1933 * botline. */ | |
| 1934 if (cln >= curwin->w_botline) | |
| 1935 { | |
| 1936 scrolled = used; | |
| 1937 if (cln == curwin->w_botline) | |
| 1938 scrolled -= curwin->w_empty_rows; | |
| 1939 } | |
| 1940 | |
| 1941 /* | |
| 1942 * Stop counting lines to scroll when | |
| 1943 * - hitting start of the file | |
| 1944 * - scrolled nothing or at least 'sj' lines | |
| 1945 * - at least 'so' lines below the cursor | |
| 1946 * - lines between botline and cursor have been counted | |
| 1947 */ | |
| 1948 #ifdef FEAT_FOLDING | |
| 1949 if (!hasFolding(curwin->w_cursor.lnum, &loff.lnum, &boff.lnum)) | |
| 1950 #endif | |
| 1951 { | |
| 1952 loff.lnum = cln; | |
| 1953 boff.lnum = cln; | |
| 1954 } | |
| 1955 #ifdef FEAT_DIFF | |
| 1956 loff.fill = 0; | |
| 1957 boff.fill = 0; | |
| 1958 fill_below_window = diff_check_fill(curwin, curwin->w_botline) | |
| 1959 - curwin->w_filler_rows; | |
| 1960 #endif | |
| 1961 | |
| 1962 while (loff.lnum > 1) | |
| 1963 { | |
| 1964 /* Stop when scrolled nothing or at least "min_scroll", found "extra" | |
| 1965 * context for 'scrolloff' and counted all lines below the window. */ | |
| 1966 if ((((scrolled <= 0 || scrolled >= min_scroll) | |
| 1967 && extra >= ( | |
| 1968 #ifdef FEAT_MOUSE | |
| 1121 | 1969 mouse_dragging > 0 ? mouse_dragging - 1 : |
| 7 | 1970 #endif |
| 1971 p_so)) | |
| 1972 || boff.lnum + 1 > curbuf->b_ml.ml_line_count) | |
| 1973 && loff.lnum <= curwin->w_botline | |
| 1974 #ifdef FEAT_DIFF | |
| 1975 && (loff.lnum < curwin->w_botline | |
| 1976 || loff.fill >= fill_below_window) | |
| 1977 #endif | |
| 1978 ) | |
| 1979 break; | |
| 1980 | |
| 1981 /* Add one line above */ | |
| 1982 topline_back(&loff); | |
|
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1983 if (loff.height == MAXCOL) |
|
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1984 used = MAXCOL; |
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1985 else |
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1986 used += loff.height; |
| 7 | 1987 if (used > curwin->w_height) |
| 1988 break; | |
| 1989 if (loff.lnum >= curwin->w_botline | |
| 1990 #ifdef FEAT_DIFF | |
| 1991 && (loff.lnum > curwin->w_botline | |
| 1992 || loff.fill <= fill_below_window) | |
| 1993 #endif | |
| 1994 ) | |
| 1995 { | |
| 1996 /* Count screen lines that are below the window. */ | |
| 1997 scrolled += loff.height; | |
| 1998 if (loff.lnum == curwin->w_botline | |
| 1999 #ifdef FEAT_DIFF | |
| 2000 && boff.fill == 0 | |
| 2001 #endif | |
| 2002 ) | |
| 2003 scrolled -= curwin->w_empty_rows; | |
| 2004 } | |
| 2005 | |
| 2006 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
| 2007 { | |
| 2008 /* Add one line below */ | |
| 2009 botline_forw(&boff); | |
| 2010 used += boff.height; | |
| 2011 if (used > curwin->w_height) | |
| 2012 break; | |
| 2013 if (extra < ( | |
| 2014 #ifdef FEAT_MOUSE | |
| 2015 mouse_dragging > 0 ? mouse_dragging - 1 : | |
| 2016 #endif | |
| 2017 p_so) || scrolled < min_scroll) | |
| 2018 { | |
| 2019 extra += boff.height; | |
| 2020 if (boff.lnum >= curwin->w_botline | |
| 2021 #ifdef FEAT_DIFF | |
| 2022 || (boff.lnum + 1 == curwin->w_botline | |
| 2023 && boff.fill > curwin->w_filler_rows) | |
| 2024 #endif | |
| 2025 ) | |
| 2026 { | |
| 2027 /* Count screen lines that are below the window. */ | |
| 2028 scrolled += boff.height; | |
| 2029 if (boff.lnum == curwin->w_botline | |
| 2030 #ifdef FEAT_DIFF | |
| 2031 && boff.fill == 0 | |
| 2032 #endif | |
| 2033 ) | |
| 2034 scrolled -= curwin->w_empty_rows; | |
| 2035 } | |
| 2036 } | |
| 2037 } | |
| 2038 } | |
| 2039 | |
| 2040 /* curwin->w_empty_rows is larger, no need to scroll */ | |
| 2041 if (scrolled <= 0) | |
| 2042 line_count = 0; | |
| 2043 /* more than a screenfull, don't scroll but redraw */ | |
| 2044 else if (used > curwin->w_height) | |
| 2045 line_count = used; | |
| 2046 /* scroll minimal number of lines */ | |
| 2047 else | |
| 2048 { | |
| 2049 line_count = 0; | |
| 2050 #ifdef FEAT_DIFF | |
| 2051 boff.fill = curwin->w_topfill; | |
| 2052 #endif | |
| 2053 boff.lnum = curwin->w_topline - 1; | |
| 2054 for (i = 0; i < scrolled && boff.lnum < curwin->w_botline; ) | |
| 2055 { | |
| 2056 botline_forw(&boff); | |
| 2057 i += boff.height; | |
| 2058 ++line_count; | |
| 2059 } | |
| 2060 if (i < scrolled) /* below curwin->w_botline, don't scroll */ | |
| 2061 line_count = 9999; | |
| 2062 } | |
| 2063 | |
| 2064 /* | |
| 2065 * Scroll up if the cursor is off the bottom of the screen a bit. | |
| 2066 * Otherwise put it at 1/2 of the screen. | |
| 2067 */ | |
| 2068 if (line_count >= curwin->w_height && line_count > min_scroll) | |
| 2069 scroll_cursor_halfway(FALSE); | |
| 2070 else | |
| 2071 scrollup(line_count, TRUE); | |
| 2072 | |
| 2073 /* | |
| 2074 * If topline didn't change we need to restore w_botline and w_empty_rows | |
| 2075 * (we changed them). | |
| 2076 * If topline did change, update_screen() will set botline. | |
| 2077 */ | |
| 2078 if (curwin->w_topline == old_topline && set_topbot) | |
| 2079 { | |
| 2080 curwin->w_botline = old_botline; | |
| 2081 curwin->w_empty_rows = old_empty_rows; | |
| 2082 curwin->w_valid = old_valid; | |
| 2083 } | |
| 2084 curwin->w_valid |= VALID_TOPLINE; | |
| 2085 } | |
| 2086 | |
| 2087 /* | |
| 2088 * Recompute topline to put the cursor halfway the window | |
| 2089 * If "atend" is TRUE, also put it halfway at the end of the file. | |
| 2090 */ | |
| 2091 void | |
| 2092 scroll_cursor_halfway(atend) | |
| 2093 int atend; | |
| 2094 { | |
| 2095 int above = 0; | |
| 2096 linenr_T topline; | |
| 2097 #ifdef FEAT_DIFF | |
| 2098 int topfill = 0; | |
| 2099 #endif | |
| 2100 int below = 0; | |
| 2101 int used; | |
| 2102 lineoff_T loff; | |
| 2103 lineoff_T boff; | |
| 2104 | |
| 2105 loff.lnum = boff.lnum = curwin->w_cursor.lnum; | |
| 2106 #ifdef FEAT_FOLDING | |
| 2107 (void)hasFolding(loff.lnum, &loff.lnum, &boff.lnum); | |
| 2108 #endif | |
| 2109 #ifdef FEAT_DIFF | |
| 2110 used = plines_nofill(loff.lnum); | |
| 2111 loff.fill = 0; | |
| 2112 boff.fill = 0; | |
| 2113 #else | |
| 2114 used = plines(loff.lnum); | |
| 2115 #endif | |
| 2116 topline = loff.lnum; | |
| 2117 while (topline > 1) | |
| 2118 { | |
| 2119 if (below <= above) /* add a line below the cursor first */ | |
| 2120 { | |
| 2121 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
| 2122 { | |
| 2123 botline_forw(&boff); | |
| 2124 used += boff.height; | |
| 2125 if (used > curwin->w_height) | |
| 2126 break; | |
| 2127 below += boff.height; | |
| 2128 } | |
| 2129 else | |
| 2130 { | |
| 2131 ++below; /* count a "~" line */ | |
| 2132 if (atend) | |
| 2133 ++used; | |
| 2134 } | |
| 2135 } | |
| 2136 | |
| 2137 if (below > above) /* add a line above the cursor */ | |
| 2138 { | |
| 2139 topline_back(&loff); | |
|
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2140 if (loff.height == MAXCOL) |
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2141 used = MAXCOL; |
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2142 else |
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2143 used += loff.height; |
| 7 | 2144 if (used > curwin->w_height) |
| 2145 break; | |
| 2146 above += loff.height; | |
| 2147 topline = loff.lnum; | |
| 2148 #ifdef FEAT_DIFF | |
| 2149 topfill = loff.fill; | |
| 2150 #endif | |
| 2151 } | |
| 2152 } | |
| 2153 #ifdef FEAT_FOLDING | |
| 2154 if (!hasFolding(topline, &curwin->w_topline, NULL)) | |
| 2155 #endif | |
| 2156 curwin->w_topline = topline; | |
| 2157 #ifdef FEAT_DIFF | |
| 2158 curwin->w_topfill = topfill; | |
| 2159 check_topfill(curwin, FALSE); | |
| 2160 #endif | |
| 2161 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2162 curwin->w_valid |= VALID_TOPLINE; | |
| 2163 } | |
| 2164 | |
| 2165 /* | |
| 2166 * Correct the cursor position so that it is in a part of the screen at least | |
| 2167 * 'so' lines from the top and bottom, if possible. | |
| 2168 * If not possible, put it at the same position as scroll_cursor_halfway(). | |
| 2169 * When called topline must be valid! | |
| 2170 */ | |
| 2171 void | |
| 2172 cursor_correct() | |
| 2173 { | |
| 2174 int above = 0; /* screen lines above topline */ | |
| 2175 linenr_T topline; | |
| 2176 int below = 0; /* screen lines below botline */ | |
| 2177 linenr_T botline; | |
| 2178 int above_wanted, below_wanted; | |
| 2179 linenr_T cln; /* Cursor Line Number */ | |
| 2180 int max_off; | |
| 2181 | |
| 2182 /* | |
| 2183 * How many lines we would like to have above/below the cursor depends on | |
| 2184 * whether the first/last line of the file is on screen. | |
| 2185 */ | |
| 2186 above_wanted = p_so; | |
| 2187 below_wanted = p_so; | |
| 2188 #ifdef FEAT_MOUSE | |
| 1121 | 2189 if (mouse_dragging > 0) |
| 7 | 2190 { |
| 2191 above_wanted = mouse_dragging - 1; | |
| 2192 below_wanted = mouse_dragging - 1; | |
| 2193 } | |
| 2194 #endif | |
| 2195 if (curwin->w_topline == 1) | |
| 2196 { | |
| 2197 above_wanted = 0; | |
| 2198 max_off = curwin->w_height / 2; | |
| 2199 if (below_wanted > max_off) | |
| 2200 below_wanted = max_off; | |
| 2201 } | |
| 2202 validate_botline(); | |
| 2203 if (curwin->w_botline == curbuf->b_ml.ml_line_count + 1 | |
| 2204 #ifdef FEAT_MOUSE | |
| 1121 | 2205 && mouse_dragging == 0 |
| 7 | 2206 #endif |
| 2207 ) | |
| 2208 { | |
| 2209 below_wanted = 0; | |
| 2210 max_off = (curwin->w_height - 1) / 2; | |
| 2211 if (above_wanted > max_off) | |
| 2212 above_wanted = max_off; | |
| 2213 } | |
| 2214 | |
| 2215 /* | |
| 2216 * If there are sufficient file-lines above and below the cursor, we can | |
| 2217 * return now. | |
| 2218 */ | |
| 2219 cln = curwin->w_cursor.lnum; | |
| 2220 if (cln >= curwin->w_topline + above_wanted | |
| 2221 && cln < curwin->w_botline - below_wanted | |
| 2222 #ifdef FEAT_FOLDING | |
| 2223 && !hasAnyFolding(curwin) | |
| 2224 #endif | |
| 2225 ) | |
| 2226 return; | |
| 2227 | |
| 2228 /* | |
| 2229 * Narrow down the area where the cursor can be put by taking lines from | |
| 2230 * the top and the bottom until: | |
| 2231 * - the desired context lines are found | |
| 2232 * - the lines from the top is past the lines from the bottom | |
| 2233 */ | |
| 2234 topline = curwin->w_topline; | |
| 2235 botline = curwin->w_botline - 1; | |
| 2236 #ifdef FEAT_DIFF | |
| 2237 /* count filler lines as context */ | |
| 2238 above = curwin->w_topfill; | |
| 2239 below = curwin->w_filler_rows; | |
| 2240 #endif | |
| 2241 while ((above < above_wanted || below < below_wanted) && topline < botline) | |
| 2242 { | |
| 2243 if (below < below_wanted && (below <= above || above >= above_wanted)) | |
| 2244 { | |
| 2245 #ifdef FEAT_FOLDING | |
| 2246 if (hasFolding(botline, &botline, NULL)) | |
| 2247 ++below; | |
| 2248 else | |
| 2249 #endif | |
| 2250 below += plines(botline); | |
| 2251 --botline; | |
| 2252 } | |
| 2253 if (above < above_wanted && (above < below || below >= below_wanted)) | |
| 2254 { | |
| 2255 #ifdef FEAT_FOLDING | |
| 2256 if (hasFolding(topline, NULL, &topline)) | |
| 2257 ++above; | |
| 2258 else | |
| 2259 #endif | |
| 2260 #ifndef FEAT_DIFF | |
| 2261 above += plines(topline); | |
| 2262 #else | |
| 2263 above += plines_nofill(topline); | |
| 2264 | |
| 2265 /* Count filler lines below this line as context. */ | |
| 2266 if (topline < botline) | |
| 2267 above += diff_check_fill(curwin, topline + 1); | |
| 2268 #endif | |
| 2269 ++topline; | |
| 2270 } | |
| 2271 } | |
| 2272 if (topline == botline || botline == 0) | |
| 2273 curwin->w_cursor.lnum = topline; | |
| 2274 else if (topline > botline) | |
| 2275 curwin->w_cursor.lnum = botline; | |
| 2276 else | |
| 2277 { | |
| 2278 if (cln < topline && curwin->w_topline > 1) | |
| 2279 { | |
| 2280 curwin->w_cursor.lnum = topline; | |
| 2281 curwin->w_valid &= | |
| 2282 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
| 2283 } | |
| 2284 if (cln > botline && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 2285 { | |
| 2286 curwin->w_cursor.lnum = botline; | |
| 2287 curwin->w_valid &= | |
| 2288 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
| 2289 } | |
| 2290 } | |
| 2291 curwin->w_valid |= VALID_TOPLINE; | |
| 2292 } | |
| 2293 | |
| 2294 static void get_scroll_overlap __ARGS((lineoff_T *lp, int dir)); | |
| 2295 | |
| 2296 /* | |
| 2297 * move screen 'count' pages up or down and update screen | |
| 2298 * | |
| 2299 * return FAIL for failure, OK otherwise | |
| 2300 */ | |
| 2301 int | |
| 2302 onepage(dir, count) | |
| 2303 int dir; | |
| 2304 long count; | |
| 2305 { | |
| 2306 long n; | |
| 2307 int retval = OK; | |
| 2308 lineoff_T loff; | |
| 2309 linenr_T old_topline = curwin->w_topline; | |
| 2310 | |
| 2311 if (curbuf->b_ml.ml_line_count == 1) /* nothing to do */ | |
| 2312 { | |
| 2313 beep_flush(); | |
| 2314 return FAIL; | |
| 2315 } | |
| 2316 | |
| 2317 for ( ; count > 0; --count) | |
| 2318 { | |
| 2319 validate_botline(); | |
| 2320 /* | |
| 2321 * It's an error to move a page up when the first line is already on | |
| 2322 * the screen. It's an error to move a page down when the last line | |
| 2323 * is on the screen and the topline is 'scrolloff' lines from the | |
| 2324 * last line. | |
| 2325 */ | |
| 2326 if (dir == FORWARD | |
| 2327 ? ((curwin->w_topline >= curbuf->b_ml.ml_line_count - p_so) | |
| 2328 && curwin->w_botline > curbuf->b_ml.ml_line_count) | |
| 2329 : (curwin->w_topline == 1 | |
| 2330 #ifdef FEAT_DIFF | |
| 2331 && curwin->w_topfill == | |
| 2332 diff_check_fill(curwin, curwin->w_topline) | |
| 2333 #endif | |
| 2334 )) | |
| 2335 { | |
| 2336 beep_flush(); | |
| 2337 retval = FAIL; | |
| 2338 break; | |
| 2339 } | |
| 2340 | |
| 2341 #ifdef FEAT_DIFF | |
| 2342 loff.fill = 0; | |
| 2343 #endif | |
| 2344 if (dir == FORWARD) | |
| 2345 { | |
| 164 | 2346 if (firstwin == lastwin && p_window > 0 && p_window < Rows - 1) |
| 7 | 2347 { |
| 164 | 2348 /* Vi compatible scrolling */ |
| 2349 if (p_window <= 2) | |
| 2350 ++curwin->w_topline; | |
| 2351 else | |
| 2352 curwin->w_topline += p_window - 2; | |
| 2353 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
| 2354 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
| 2355 curwin->w_cursor.lnum = curwin->w_topline; | |
| 2356 } | |
| 2357 else if (curwin->w_botline > curbuf->b_ml.ml_line_count) | |
| 2358 { | |
| 2359 /* at end of file */ | |
| 7 | 2360 curwin->w_topline = curbuf->b_ml.ml_line_count; |
| 2361 #ifdef FEAT_DIFF | |
| 2362 curwin->w_topfill = 0; | |
| 2363 #endif | |
| 2364 curwin->w_valid &= ~(VALID_WROW|VALID_CROW); | |
| 2365 } | |
| 2366 else | |
| 2367 { | |
| 2368 /* For the overlap, start with the line just below the window | |
| 2369 * and go upwards. */ | |
| 2370 loff.lnum = curwin->w_botline; | |
| 2371 #ifdef FEAT_DIFF | |
| 2372 loff.fill = diff_check_fill(curwin, loff.lnum) | |
| 2373 - curwin->w_filler_rows; | |
| 2374 #endif | |
| 2375 get_scroll_overlap(&loff, -1); | |
| 2376 curwin->w_topline = loff.lnum; | |
| 2377 #ifdef FEAT_DIFF | |
| 2378 curwin->w_topfill = loff.fill; | |
| 2379 check_topfill(curwin, FALSE); | |
| 2380 #endif | |
| 2381 curwin->w_cursor.lnum = curwin->w_topline; | |
| 2382 curwin->w_valid &= ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW| | |
| 2383 VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2384 } | |
| 2385 } | |
| 2386 else /* dir == BACKWARDS */ | |
| 2387 { | |
| 2388 #ifdef FEAT_DIFF | |
| 2389 if (curwin->w_topline == 1) | |
| 2390 { | |
| 2391 /* Include max number of filler lines */ | |
| 2392 max_topfill(); | |
| 2393 continue; | |
| 2394 } | |
| 2395 #endif | |
| 164 | 2396 if (firstwin == lastwin && p_window > 0 && p_window < Rows - 1) |
| 2397 { | |
| 2398 /* Vi compatible scrolling (sort of) */ | |
| 2399 if (p_window <= 2) | |
| 2400 --curwin->w_topline; | |
| 2401 else | |
| 2402 curwin->w_topline -= p_window - 2; | |
| 2403 if (curwin->w_topline < 1) | |
| 2404 curwin->w_topline = 1; | |
| 2405 curwin->w_cursor.lnum = curwin->w_topline + p_window - 1; | |
| 2406 if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count) | |
| 2407 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; | |
| 2408 continue; | |
| 2409 } | |
| 2410 | |
| 7 | 2411 /* Find the line at the top of the window that is going to be the |
| 2412 * line at the bottom of the window. Make sure this results in | |
| 2413 * the same line as before doing CTRL-F. */ | |
| 2414 loff.lnum = curwin->w_topline - 1; | |
| 2415 #ifdef FEAT_DIFF | |
| 2416 loff.fill = diff_check_fill(curwin, loff.lnum + 1) | |
| 2417 - curwin->w_topfill; | |
| 2418 #endif | |
| 2419 get_scroll_overlap(&loff, 1); | |
| 2420 | |
| 2421 if (loff.lnum >= curbuf->b_ml.ml_line_count) | |
| 2422 { | |
| 2423 loff.lnum = curbuf->b_ml.ml_line_count; | |
| 2424 #ifdef FEAT_DIFF | |
| 2425 loff.fill = 0; | |
| 2426 } | |
| 2427 else | |
| 2428 { | |
| 2429 botline_topline(&loff); | |
| 2430 #endif | |
| 2431 } | |
| 2432 curwin->w_cursor.lnum = loff.lnum; | |
| 2433 | |
| 2434 /* Find the line just above the new topline to get the right line | |
| 2435 * at the bottom of the window. */ | |
| 2436 n = 0; | |
| 2437 while (n <= curwin->w_height && loff.lnum >= 1) | |
| 2438 { | |
| 2439 topline_back(&loff); | |
|
2082
8ca3c9ad0bee
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parents:
2070
diff
changeset
|
2440 if (loff.height == MAXCOL) |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2441 n = MAXCOL; |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2442 else |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2443 n += loff.height; |
| 7 | 2444 } |
|
2082
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2445 if (loff.lnum < 1) /* at begin of file */ |
| 7 | 2446 { |
| 2447 curwin->w_topline = 1; | |
| 2448 #ifdef FEAT_DIFF | |
| 2449 max_topfill(); | |
| 2450 #endif | |
| 2451 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 2452 } | |
| 2453 else | |
| 2454 { | |
| 2455 /* Go two lines forward again. */ | |
| 2456 #ifdef FEAT_DIFF | |
| 2457 topline_botline(&loff); | |
| 2458 #endif | |
| 2459 botline_forw(&loff); | |
| 2460 botline_forw(&loff); | |
| 2461 #ifdef FEAT_DIFF | |
| 2462 botline_topline(&loff); | |
| 2463 #endif | |
| 2464 #ifdef FEAT_FOLDING | |
| 2465 /* We're at the wrong end of a fold now. */ | |
| 2466 (void)hasFolding(loff.lnum, &loff.lnum, NULL); | |
| 2467 #endif | |
| 2468 | |
| 2469 /* Always scroll at least one line. Avoid getting stuck on | |
| 2470 * very long lines. */ | |
| 2471 if (loff.lnum >= curwin->w_topline | |
| 2472 #ifdef FEAT_DIFF | |
| 2473 && (loff.lnum > curwin->w_topline | |
| 2474 || loff.fill >= curwin->w_topfill) | |
| 2475 #endif | |
| 2476 ) | |
| 2477 { | |
| 2478 #ifdef FEAT_DIFF | |
| 2479 /* First try using the maximum number of filler lines. If | |
| 2480 * that's not enough, backup one line. */ | |
| 2481 loff.fill = curwin->w_topfill; | |
| 2482 if (curwin->w_topfill < diff_check_fill(curwin, | |
| 2483 curwin->w_topline)) | |
| 2484 max_topfill(); | |
| 2485 if (curwin->w_topfill == loff.fill) | |
| 2486 #endif | |
| 2487 { | |
| 2488 --curwin->w_topline; | |
| 2489 #ifdef FEAT_DIFF | |
| 2490 curwin->w_topfill = 0; | |
| 2491 #endif | |
| 2492 } | |
| 2493 comp_botline(curwin); | |
| 2494 curwin->w_cursor.lnum = curwin->w_botline - 1; | |
| 2495 curwin->w_valid &= ~(VALID_WCOL|VALID_CHEIGHT| | |
| 2496 VALID_WROW|VALID_CROW); | |
| 2497 } | |
| 2498 else | |
| 2499 { | |
| 2500 curwin->w_topline = loff.lnum; | |
| 2501 #ifdef FEAT_DIFF | |
| 2502 curwin->w_topfill = loff.fill; | |
| 2503 check_topfill(curwin, FALSE); | |
| 2504 #endif | |
| 2505 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 2506 } | |
| 2507 } | |
| 2508 } | |
| 2509 } | |
| 2510 #ifdef FEAT_FOLDING | |
| 2511 foldAdjustCursor(); | |
| 2512 #endif | |
| 2513 cursor_correct(); | |
| 161 | 2514 if (retval == OK) |
| 2515 beginline(BL_SOL | BL_FIX); | |
| 7 | 2516 curwin->w_valid &= ~(VALID_WCOL|VALID_WROW|VALID_VIRTCOL); |
| 2517 | |
| 2518 /* | |
| 2519 * Avoid the screen jumping up and down when 'scrolloff' is non-zero. | |
| 2520 * But make sure we scroll at least one line (happens with mix of long | |
| 2521 * wrapping lines and non-wrapping line). | |
| 2522 */ | |
| 2523 if (retval == OK && dir == FORWARD && check_top_offset()) | |
| 2524 { | |
| 2525 scroll_cursor_top(1, FALSE); | |
| 2526 if (curwin->w_topline <= old_topline | |
| 2527 && old_topline < curbuf->b_ml.ml_line_count) | |
| 2528 { | |
| 2529 curwin->w_topline = old_topline + 1; | |
| 2530 #ifdef FEAT_FOLDING | |
| 2531 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 2532 #endif | |
| 2533 } | |
| 2534 } | |
| 2535 | |
| 2536 redraw_later(VALID); | |
| 2537 return retval; | |
| 2538 } | |
| 2539 | |
| 2540 /* | |
| 2541 * Decide how much overlap to use for page-up or page-down scrolling. | |
| 2542 * This is symmetric, so that doing both keeps the same lines displayed. | |
| 2543 * Three lines are examined: | |
| 2544 * | |
| 2545 * before CTRL-F after CTRL-F / before CTRL-B | |
| 2546 * etc. l1 | |
| 2547 * l1 last but one line ------------ | |
| 2548 * l2 last text line l2 top text line | |
| 2549 * ------------- l3 second text line | |
| 2550 * l3 etc. | |
| 2551 */ | |
| 2552 static void | |
| 2553 get_scroll_overlap(lp, dir) | |
| 2554 lineoff_T *lp; | |
| 2555 int dir; | |
| 2556 { | |
| 2557 int h1, h2, h3, h4; | |
| 2558 int min_height = curwin->w_height - 2; | |
| 2559 lineoff_T loff0, loff1, loff2; | |
| 2560 | |
| 2561 #ifdef FEAT_DIFF | |
| 2562 if (lp->fill > 0) | |
| 2563 lp->height = 1; | |
| 2564 else | |
| 2565 lp->height = plines_nofill(lp->lnum); | |
| 2566 #else | |
| 2567 lp->height = plines(lp->lnum); | |
| 2568 #endif | |
| 2569 h1 = lp->height; | |
| 2570 if (h1 > min_height) | |
| 2571 return; /* no overlap */ | |
| 2572 | |
| 2573 loff0 = *lp; | |
| 2574 if (dir > 0) | |
| 2575 botline_forw(lp); | |
| 2576 else | |
| 2577 topline_back(lp); | |
| 2578 h2 = lp->height; | |
| 2579 if (h2 + h1 > min_height) | |
| 2580 { | |
| 2581 *lp = loff0; /* no overlap */ | |
| 2582 return; | |
| 2583 } | |
| 2584 | |
| 2585 loff1 = *lp; | |
| 2586 if (dir > 0) | |
| 2587 botline_forw(lp); | |
| 2588 else | |
| 2589 topline_back(lp); | |
| 2590 h3 = lp->height; | |
| 2591 if (h3 + h2 > min_height) | |
| 2592 { | |
| 2593 *lp = loff0; /* no overlap */ | |
| 2594 return; | |
| 2595 } | |
| 2596 | |
| 2597 loff2 = *lp; | |
| 2598 if (dir > 0) | |
| 2599 botline_forw(lp); | |
| 2600 else | |
| 2601 topline_back(lp); | |
| 2602 h4 = lp->height; | |
| 2603 if (h4 + h3 + h2 > min_height || h3 + h2 + h1 > min_height) | |
| 2604 *lp = loff1; /* 1 line overlap */ | |
| 2605 else | |
| 2606 *lp = loff2; /* 2 lines overlap */ | |
| 2607 return; | |
| 2608 } | |
| 2609 | |
| 2610 /* #define KEEP_SCREEN_LINE */ | |
| 2611 /* | |
| 2612 * Scroll 'scroll' lines up or down. | |
| 2613 */ | |
| 2614 void | |
| 2615 halfpage(flag, Prenum) | |
| 2616 int flag; | |
| 2617 linenr_T Prenum; | |
| 2618 { | |
| 2619 long scrolled = 0; | |
| 2620 int i; | |
| 2621 int n; | |
| 2622 int room; | |
| 2623 | |
| 2624 if (Prenum) | |
| 2625 curwin->w_p_scr = (Prenum > curwin->w_height) ? | |
| 2626 curwin->w_height : Prenum; | |
| 2627 n = (curwin->w_p_scr <= curwin->w_height) ? | |
| 2628 curwin->w_p_scr : curwin->w_height; | |
| 2629 | |
| 2630 validate_botline(); | |
| 2631 room = curwin->w_empty_rows; | |
| 2632 #ifdef FEAT_DIFF | |
| 2633 room += curwin->w_filler_rows; | |
| 2634 #endif | |
| 2635 if (flag) | |
| 2636 { | |
| 2637 /* | |
| 2638 * scroll the text up | |
| 2639 */ | |
| 2640 while (n > 0 && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 2641 { | |
| 2642 #ifdef FEAT_DIFF | |
| 2643 if (curwin->w_topfill > 0) | |
| 2644 { | |
| 2645 i = 1; | |
| 2646 if (--n < 0 && scrolled > 0) | |
| 2647 break; | |
| 2648 --curwin->w_topfill; | |
| 2649 } | |
| 2650 else | |
| 2651 #endif | |
| 2652 { | |
| 2653 #ifdef FEAT_DIFF | |
| 2654 i = plines_nofill(curwin->w_topline); | |
| 2655 #else | |
| 2656 i = plines(curwin->w_topline); | |
| 2657 #endif | |
| 2658 n -= i; | |
| 2659 if (n < 0 && scrolled > 0) | |
| 2660 break; | |
| 2661 #ifdef FEAT_FOLDING | |
| 2662 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
| 2663 #endif | |
| 2664 ++curwin->w_topline; | |
| 2665 #ifdef FEAT_DIFF | |
| 2666 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 2667 #endif | |
| 2668 | |
| 2669 #ifndef KEEP_SCREEN_LINE | |
| 2670 if (curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
| 2671 { | |
| 2672 ++curwin->w_cursor.lnum; | |
| 2673 curwin->w_valid &= | |
| 2674 ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
| 2675 } | |
| 2676 #endif | |
| 2677 } | |
| 2678 curwin->w_valid &= ~(VALID_CROW|VALID_WROW); | |
| 2679 scrolled += i; | |
| 2680 | |
| 2681 /* | |
| 2682 * Correct w_botline for changed w_topline. | |
| 2683 * Won't work when there are filler lines. | |
| 2684 */ | |
| 2685 #ifdef FEAT_DIFF | |
| 2686 if (curwin->w_p_diff) | |
| 2687 curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2688 else | |
| 2689 #endif | |
| 2690 { | |
| 2691 room += i; | |
| 2692 do | |
| 2693 { | |
| 2694 i = plines(curwin->w_botline); | |
| 2695 if (i > room) | |
| 2696 break; | |
| 2697 #ifdef FEAT_FOLDING | |
| 2698 (void)hasFolding(curwin->w_botline, NULL, | |
| 2699 &curwin->w_botline); | |
| 2700 #endif | |
| 2701 ++curwin->w_botline; | |
| 2702 room -= i; | |
| 2703 } while (curwin->w_botline <= curbuf->b_ml.ml_line_count); | |
| 2704 } | |
| 2705 } | |
| 2706 | |
| 2707 #ifndef KEEP_SCREEN_LINE | |
| 2708 /* | |
| 2709 * When hit bottom of the file: move cursor down. | |
| 2710 */ | |
| 2711 if (n > 0) | |
| 2712 { | |
| 2713 # ifdef FEAT_FOLDING | |
| 2714 if (hasAnyFolding(curwin)) | |
| 2715 { | |
| 2716 while (--n >= 0 | |
| 2717 && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
| 2718 { | |
| 2719 (void)hasFolding(curwin->w_cursor.lnum, NULL, | |
| 2720 &curwin->w_cursor.lnum); | |
| 2721 ++curwin->w_cursor.lnum; | |
| 2722 } | |
| 2723 } | |
| 2724 else | |
| 2725 # endif | |
| 2726 curwin->w_cursor.lnum += n; | |
| 2727 check_cursor_lnum(); | |
| 2728 } | |
| 2729 #else | |
| 2730 /* try to put the cursor in the same screen line */ | |
| 2731 while ((curwin->w_cursor.lnum < curwin->w_topline || scrolled > 0) | |
| 2732 && curwin->w_cursor.lnum < curwin->w_botline - 1) | |
| 2733 { | |
| 2734 scrolled -= plines(curwin->w_cursor.lnum); | |
| 2735 if (scrolled < 0 && curwin->w_cursor.lnum >= curwin->w_topline) | |
| 2736 break; | |
| 2737 # ifdef FEAT_FOLDING | |
| 2738 (void)hasFolding(curwin->w_cursor.lnum, NULL, | |
| 2739 &curwin->w_cursor.lnum); | |
| 2740 # endif | |
| 2741 ++curwin->w_cursor.lnum; | |
| 2742 } | |
| 2743 #endif | |
| 2744 } | |
| 2745 else | |
| 2746 { | |
| 2747 /* | |
| 2748 * scroll the text down | |
| 2749 */ | |
| 2750 while (n > 0 && curwin->w_topline > 1) | |
| 2751 { | |
| 2752 #ifdef FEAT_DIFF | |
| 2753 if (curwin->w_topfill < diff_check_fill(curwin, curwin->w_topline)) | |
| 2754 { | |
| 2755 i = 1; | |
| 2756 if (--n < 0 && scrolled > 0) | |
| 2757 break; | |
| 2758 ++curwin->w_topfill; | |
| 2759 } | |
| 2760 else | |
| 2761 #endif | |
| 2762 { | |
| 2763 #ifdef FEAT_DIFF | |
| 2764 i = plines_nofill(curwin->w_topline - 1); | |
| 2765 #else | |
| 2766 i = plines(curwin->w_topline - 1); | |
| 2767 #endif | |
| 2768 n -= i; | |
| 2769 if (n < 0 && scrolled > 0) | |
| 2770 break; | |
| 2771 --curwin->w_topline; | |
| 2772 #ifdef FEAT_FOLDING | |
| 2773 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 2774 #endif | |
| 2775 #ifdef FEAT_DIFF | |
| 2776 curwin->w_topfill = 0; | |
| 2777 #endif | |
| 2778 } | |
| 2779 curwin->w_valid &= ~(VALID_CROW|VALID_WROW| | |
| 2780 VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2781 scrolled += i; | |
| 2782 #ifndef KEEP_SCREEN_LINE | |
| 2783 if (curwin->w_cursor.lnum > 1) | |
| 2784 { | |
| 2785 --curwin->w_cursor.lnum; | |
| 2786 curwin->w_valid &= ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
| 2787 } | |
| 2788 #endif | |
| 2789 } | |
| 2790 #ifndef KEEP_SCREEN_LINE | |
| 2791 /* | |
| 2792 * When hit top of the file: move cursor up. | |
| 2793 */ | |
| 2794 if (n > 0) | |
| 2795 { | |
| 2796 if (curwin->w_cursor.lnum <= (linenr_T)n) | |
| 2797 curwin->w_cursor.lnum = 1; | |
| 2798 else | |
| 2799 # ifdef FEAT_FOLDING | |
| 2800 if (hasAnyFolding(curwin)) | |
| 2801 { | |
| 2802 while (--n >= 0 && curwin->w_cursor.lnum > 1) | |
| 2803 { | |
| 2804 --curwin->w_cursor.lnum; | |
| 2805 (void)hasFolding(curwin->w_cursor.lnum, | |
| 2806 &curwin->w_cursor.lnum, NULL); | |
| 2807 } | |
| 2808 } | |
| 2809 else | |
| 2810 # endif | |
| 2811 curwin->w_cursor.lnum -= n; | |
| 2812 } | |
| 2813 #else | |
| 2814 /* try to put the cursor in the same screen line */ | |
| 2815 scrolled += n; /* move cursor when topline is 1 */ | |
| 2816 while (curwin->w_cursor.lnum > curwin->w_topline | |
| 2817 && (scrolled > 0 || curwin->w_cursor.lnum >= curwin->w_botline)) | |
| 2818 { | |
| 2819 scrolled -= plines(curwin->w_cursor.lnum - 1); | |
| 2820 if (scrolled < 0 && curwin->w_cursor.lnum < curwin->w_botline) | |
| 2821 break; | |
| 2822 --curwin->w_cursor.lnum; | |
| 2823 # ifdef FEAT_FOLDING | |
| 2824 foldAdjustCursor(); | |
| 2825 # endif | |
| 2826 } | |
| 2827 #endif | |
| 2828 } | |
| 2829 # ifdef FEAT_FOLDING | |
| 2830 /* Move cursor to first line of closed fold. */ | |
| 2831 foldAdjustCursor(); | |
| 2832 # endif | |
| 2833 #ifdef FEAT_DIFF | |
| 2834 check_topfill(curwin, !flag); | |
| 2835 #endif | |
| 2836 cursor_correct(); | |
| 2837 beginline(BL_SOL | BL_FIX); | |
| 2838 redraw_later(VALID); | |
| 2839 } | |
|
2250
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|
2840 |
|
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Add the conceal patch from Vince Negri.
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|
2841 #if defined(FEAT_CURSORBIND) || defined(PROTO) |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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|
2842 void |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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diff
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|
2843 do_check_cursorbind() |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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|
2844 { |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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parents:
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diff
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|
2845 linenr_T line = curwin->w_cursor.lnum; |
| 3415 | 2846 colnr_T col = curwin->w_cursor.col; |
| 2847 # ifdef FEAT_VIRTUALEDIT | |
| 2848 colnr_T coladd = curwin->w_cursor.coladd; | |
| 2849 # endif | |
| 3433 | 2850 colnr_T curswant = curwin->w_curswant; |
| 2851 int set_curswant = curwin->w_set_curswant; | |
|
2250
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Add the conceal patch from Vince Negri.
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|
2852 win_T *old_curwin = curwin; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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parents:
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diff
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|
2853 buf_T *old_curbuf = curbuf; |
| 2693 | 2854 int restart_edit_save; |
|
2250
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|
2855 # ifdef FEAT_VISUAL |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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|
2856 int old_VIsual_select = VIsual_select; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
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|
2857 int old_VIsual_active = VIsual_active; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
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|
2858 # endif |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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|
2859 |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
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diff
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|
2860 /* |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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parents:
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diff
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|
2861 * loop through the cursorbound windows |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
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diff
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|
2862 */ |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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changeset
|
2863 # ifdef FEAT_VISUAL |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
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|
2864 VIsual_select = VIsual_active = 0; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
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diff
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|
2865 # endif |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2866 for (curwin = firstwin; curwin; curwin = curwin->w_next) |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
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diff
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|
2867 { |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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parents:
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diff
changeset
|
2868 curbuf = curwin->w_buffer; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
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diff
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|
2869 /* skip original window and windows with 'noscrollbind' */ |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
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diff
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|
2870 if (curwin != old_curwin && curwin->w_p_crb) |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
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diff
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|
2871 { |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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parents:
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|
2872 # ifdef FEAT_DIFF |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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parents:
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|
2873 if (curwin->w_p_diff) |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
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diff
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|
2874 curwin->w_cursor.lnum |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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|
2875 = diff_get_corresponding_line(old_curbuf, |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
2876 line, |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2877 curbuf, |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2878 curwin->w_cursor.lnum); |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
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diff
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|
2879 else |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
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diff
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|
2880 # endif |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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parents:
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diff
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|
2881 curwin->w_cursor.lnum = line; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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parents:
2210
diff
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|
2882 curwin->w_cursor.col = col; |
| 3415 | 2883 # ifdef FEAT_VIRTUALEDIT |
| 2884 curwin->w_cursor.coladd = coladd; | |
| 2885 # endif | |
| 3433 | 2886 curwin->w_curswant = curswant; |
| 2887 curwin->w_set_curswant = set_curswant; | |
|
2250
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|
2888 |
| 2693 | 2889 /* Make sure the cursor is in a valid position. Temporarily set |
| 2890 * "restart_edit" to allow the cursor to be beyond the EOL. */ | |
| 2891 restart_edit_save = restart_edit; | |
| 2892 restart_edit = TRUE; | |
|
2250
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|
2893 check_cursor(); |
| 2693 | 2894 restart_edit = restart_edit_save; |
|
2250
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|
2895 # ifdef FEAT_MBYTE |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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|
2896 /* Correct cursor for multi-byte character. */ |
|
1bac28a53fae
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|
2897 if (has_mbyte) |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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|
2898 mb_adjust_cursor(); |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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|
2899 # endif |
| 2688 | 2900 redraw_later(VALID); |
|
2250
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|
2901 |
| 2688 | 2902 /* Only scroll when 'scrollbind' hasn't done this. */ |
| 2903 if (!curwin->w_p_scb) | |
| 2904 update_topline(); | |
|
2250
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|
2905 # ifdef FEAT_WINDOWS |
|
1bac28a53fae
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|
2906 curwin->w_redr_status = TRUE; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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parents:
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|
2907 # endif |
|
1bac28a53fae
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|
2908 } |
|
1bac28a53fae
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|
2909 } |
|
1bac28a53fae
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|
2910 |
|
1bac28a53fae
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|
2911 /* |
|
1bac28a53fae
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|
2912 * reset current-window |
|
1bac28a53fae
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|
2913 */ |
|
1bac28a53fae
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|
2914 # ifdef FEAT_VISUAL |
|
1bac28a53fae
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|
2915 VIsual_select = old_VIsual_select; |
|
1bac28a53fae
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|
2916 VIsual_active = old_VIsual_active; |
|
1bac28a53fae
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|
2917 # endif |
|
1bac28a53fae
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|
2918 curwin = old_curwin; |
|
1bac28a53fae
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|
2919 curbuf = old_curbuf; |
|
1bac28a53fae
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|
2920 } |
|
1bac28a53fae
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|
2921 #endif /* FEAT_CURSORBIND */ |