Mercurial > vim
annotate src/move.c @ 5976:d18c63fd0c48
Added tag v7-4-328 for changeset 01d9ffdd6e6f
| author | Bram Moolenaar <bram@vim.org> |
|---|---|
| date | Tue, 17 Jun 2014 13:50:13 +0200 |
| parents | b650f2db8f96 |
| children | fe1827921d50 |
| 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)); | |
| 5764 | 23 static void redraw_for_cursorline __ARGS((win_T *wp)); |
| 532 | 24 static int scrolljump_value __ARGS((void)); |
| 7 | 25 static int check_top_offset __ARGS((void)); |
| 26 static void curs_rows __ARGS((win_T *wp, int do_botline)); | |
| 27 static void validate_botline_win __ARGS((win_T *wp)); | |
| 28 static void validate_cheight __ARGS((void)); | |
| 29 | |
| 30 typedef struct | |
| 31 { | |
| 32 linenr_T lnum; /* line number */ | |
| 33 #ifdef FEAT_DIFF | |
| 34 int fill; /* filler lines */ | |
| 35 #endif | |
| 36 int height; /* height of added line */ | |
| 37 } lineoff_T; | |
| 38 | |
| 39 static void topline_back __ARGS((lineoff_T *lp)); | |
| 40 static void botline_forw __ARGS((lineoff_T *lp)); | |
| 41 #ifdef FEAT_DIFF | |
| 42 static void botline_topline __ARGS((lineoff_T *lp)); | |
| 43 static void topline_botline __ARGS((lineoff_T *lp)); | |
| 44 static void max_topfill __ARGS((void)); | |
| 45 #endif | |
| 46 | |
| 47 /* | |
| 48 * Compute wp->w_botline for the current wp->w_topline. Can be called after | |
| 49 * wp->w_topline changed. | |
| 50 */ | |
| 51 static void | |
| 52 comp_botline(wp) | |
| 53 win_T *wp; | |
| 54 { | |
| 55 int n; | |
| 56 linenr_T lnum; | |
| 57 int done; | |
| 58 #ifdef FEAT_FOLDING | |
| 59 linenr_T last; | |
| 60 int folded; | |
| 61 #endif | |
| 62 | |
| 63 /* | |
| 64 * If w_cline_row is valid, start there. | |
| 65 * Otherwise have to start at w_topline. | |
| 66 */ | |
| 67 check_cursor_moved(wp); | |
| 68 if (wp->w_valid & VALID_CROW) | |
| 69 { | |
| 70 lnum = wp->w_cursor.lnum; | |
| 71 done = wp->w_cline_row; | |
| 72 } | |
| 73 else | |
| 74 { | |
| 75 lnum = wp->w_topline; | |
| 76 done = 0; | |
| 77 } | |
| 78 | |
| 79 for ( ; lnum <= wp->w_buffer->b_ml.ml_line_count; ++lnum) | |
| 80 { | |
| 81 #ifdef FEAT_FOLDING | |
| 82 last = lnum; | |
| 83 folded = FALSE; | |
| 84 if (hasFoldingWin(wp, lnum, NULL, &last, TRUE, NULL)) | |
| 85 { | |
| 86 n = 1; | |
| 87 folded = TRUE; | |
| 88 } | |
| 89 else | |
| 90 #endif | |
| 91 #ifdef FEAT_DIFF | |
| 92 if (lnum == wp->w_topline) | |
| 93 n = plines_win_nofill(wp, lnum, TRUE) + wp->w_topfill; | |
| 94 else | |
| 95 #endif | |
| 96 n = plines_win(wp, lnum, TRUE); | |
| 97 if ( | |
| 98 #ifdef FEAT_FOLDING | |
| 99 lnum <= wp->w_cursor.lnum && last >= wp->w_cursor.lnum | |
| 100 #else | |
| 101 lnum == wp->w_cursor.lnum | |
| 102 #endif | |
| 103 ) | |
| 104 { | |
| 105 wp->w_cline_row = done; | |
| 106 wp->w_cline_height = n; | |
| 107 #ifdef FEAT_FOLDING | |
| 108 wp->w_cline_folded = folded; | |
| 109 #endif | |
| 5764 | 110 redraw_for_cursorline(wp); |
| 7 | 111 wp->w_valid |= (VALID_CROW|VALID_CHEIGHT); |
| 112 } | |
| 113 if (done + n > wp->w_height) | |
| 114 break; | |
| 115 done += n; | |
| 116 #ifdef FEAT_FOLDING | |
| 117 lnum = last; | |
| 118 #endif | |
| 119 } | |
| 120 | |
| 121 /* wp->w_botline is the line that is just below the window */ | |
| 122 wp->w_botline = lnum; | |
| 123 wp->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 124 | |
| 125 set_empty_rows(wp, done); | |
| 126 } | |
| 127 | |
| 128 /* | |
| 5764 | 129 * Redraw when w_cline_row changes and 'relativenumber' or 'cursorline' is |
| 130 * set. | |
| 131 */ | |
| 132 static void | |
| 133 redraw_for_cursorline(wp) | |
| 134 win_T *wp; | |
| 135 { | |
| 136 if ((wp->w_p_rnu | |
| 137 #ifdef FEAT_SYN_HL | |
| 138 || wp->w_p_cul | |
| 139 #endif | |
| 140 ) | |
| 141 && (wp->w_valid & VALID_CROW) == 0 | |
| 142 # ifdef FEAT_INS_EXPAND | |
| 143 && !pum_visible() | |
| 144 # endif | |
| 145 ) | |
| 146 redraw_win_later(wp, SOME_VALID); | |
| 147 } | |
| 148 | |
| 149 /* | |
| 7 | 150 * Update curwin->w_topline and redraw if necessary. |
| 151 * Used to update the screen before printing a message. | |
| 152 */ | |
| 153 void | |
| 154 update_topline_redraw() | |
| 155 { | |
| 156 update_topline(); | |
| 157 if (must_redraw) | |
| 158 update_screen(0); | |
| 159 } | |
| 160 | |
| 161 /* | |
| 162 * Update curwin->w_topline to move the cursor onto the screen. | |
| 163 */ | |
| 164 void | |
| 165 update_topline() | |
| 166 { | |
| 167 long line_count; | |
| 168 int halfheight; | |
| 169 int n; | |
| 170 linenr_T old_topline; | |
| 171 #ifdef FEAT_DIFF | |
| 172 int old_topfill; | |
| 173 #endif | |
| 174 #ifdef FEAT_FOLDING | |
| 175 linenr_T lnum; | |
| 176 #endif | |
| 177 int check_topline = FALSE; | |
| 178 int check_botline = FALSE; | |
| 179 #ifdef FEAT_MOUSE | |
| 180 int save_so = p_so; | |
| 181 #endif | |
| 182 | |
| 183 if (!screen_valid(TRUE)) | |
| 184 return; | |
| 185 | |
| 186 check_cursor_moved(curwin); | |
| 187 if (curwin->w_valid & VALID_TOPLINE) | |
| 188 return; | |
| 189 | |
| 190 #ifdef FEAT_MOUSE | |
| 191 /* When dragging with the mouse, don't scroll that quickly */ | |
| 1121 | 192 if (mouse_dragging > 0) |
| 7 | 193 p_so = mouse_dragging - 1; |
| 194 #endif | |
| 195 | |
| 196 old_topline = curwin->w_topline; | |
| 197 #ifdef FEAT_DIFF | |
| 198 old_topfill = curwin->w_topfill; | |
| 199 #endif | |
| 200 | |
| 201 /* | |
| 202 * If the buffer is empty, always set topline to 1. | |
| 203 */ | |
| 204 if (bufempty()) /* special case - file is empty */ | |
| 205 { | |
| 206 if (curwin->w_topline != 1) | |
| 207 redraw_later(NOT_VALID); | |
| 208 curwin->w_topline = 1; | |
| 209 curwin->w_botline = 2; | |
| 210 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 211 #ifdef FEAT_SCROLLBIND | |
| 212 curwin->w_scbind_pos = 1; | |
| 213 #endif | |
| 214 } | |
| 215 | |
| 216 /* | |
| 217 * If the cursor is above or near the top of the window, scroll the window | |
| 218 * to show the line the cursor is in, with 'scrolloff' context. | |
| 219 */ | |
| 220 else | |
| 221 { | |
| 222 if (curwin->w_topline > 1) | |
| 223 { | |
| 224 /* If the cursor is above topline, scrolling is always needed. | |
| 225 * If the cursor is far below topline and there is no folding, | |
| 226 * scrolling down is never needed. */ | |
| 227 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 228 check_topline = TRUE; | |
| 229 else if (check_top_offset()) | |
| 230 check_topline = TRUE; | |
| 231 } | |
| 232 #ifdef FEAT_DIFF | |
| 233 /* Check if there are more filler lines than allowed. */ | |
| 234 if (!check_topline && curwin->w_topfill > diff_check_fill(curwin, | |
| 235 curwin->w_topline)) | |
| 236 check_topline = TRUE; | |
| 237 #endif | |
| 238 | |
| 239 if (check_topline) | |
| 240 { | |
| 241 halfheight = curwin->w_height / 2 - 1; | |
| 242 if (halfheight < 2) | |
| 243 halfheight = 2; | |
| 244 | |
| 245 #ifdef FEAT_FOLDING | |
| 246 if (hasAnyFolding(curwin)) | |
| 247 { | |
| 248 /* Count the number of logical lines between the cursor and | |
| 249 * topline + p_so (approximation of how much will be | |
| 250 * scrolled). */ | |
| 251 n = 0; | |
| 252 for (lnum = curwin->w_cursor.lnum; | |
| 253 lnum < curwin->w_topline + p_so; ++lnum) | |
| 254 { | |
| 255 ++n; | |
| 256 /* stop at end of file or when we know we are far off */ | |
| 257 if (lnum >= curbuf->b_ml.ml_line_count || n >= halfheight) | |
| 258 break; | |
| 259 (void)hasFolding(lnum, NULL, &lnum); | |
| 260 } | |
| 261 } | |
| 262 else | |
| 263 #endif | |
| 264 n = curwin->w_topline + p_so - curwin->w_cursor.lnum; | |
| 265 | |
| 266 /* If we weren't very close to begin with, we scroll to put the | |
| 267 * cursor in the middle of the window. Otherwise put the cursor | |
| 268 * near the top of the window. */ | |
| 269 if (n >= halfheight) | |
| 270 scroll_cursor_halfway(FALSE); | |
| 271 else | |
| 272 { | |
| 532 | 273 scroll_cursor_top(scrolljump_value(), FALSE); |
| 7 | 274 check_botline = TRUE; |
| 275 } | |
| 276 } | |
| 277 | |
| 278 else | |
| 279 { | |
| 280 #ifdef FEAT_FOLDING | |
| 281 /* Make sure topline is the first line of a fold. */ | |
| 282 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 283 #endif | |
| 284 check_botline = TRUE; | |
| 285 } | |
| 286 } | |
| 287 | |
| 288 /* | |
| 289 * If the cursor is below the bottom of the window, scroll the window | |
| 290 * to put the cursor on the window. | |
| 291 * When w_botline is invalid, recompute it first, to avoid a redraw later. | |
| 292 * If w_botline was approximated, we might need a redraw later in a few | |
| 293 * cases, but we don't want to spend (a lot of) time recomputing w_botline | |
| 294 * for every small change. | |
| 295 */ | |
| 296 if (check_botline) | |
| 297 { | |
| 298 if (!(curwin->w_valid & VALID_BOTLINE_AP)) | |
| 299 validate_botline(); | |
| 300 | |
| 301 if (curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 302 { | |
| 1744 | 303 if (curwin->w_cursor.lnum < curwin->w_botline) |
| 304 { | |
| 305 if (((long)curwin->w_cursor.lnum | |
| 7 | 306 >= (long)curwin->w_botline - p_so |
| 307 #ifdef FEAT_FOLDING | |
| 308 || hasAnyFolding(curwin) | |
| 309 #endif | |
| 310 )) | |
| 1744 | 311 { |
| 7 | 312 lineoff_T loff; |
| 313 | |
| 1744 | 314 /* Cursor is (a few lines) above botline, check if there are |
| 315 * 'scrolloff' window lines below the cursor. If not, need to | |
| 316 * scroll. */ | |
| 7 | 317 n = curwin->w_empty_rows; |
| 318 loff.lnum = curwin->w_cursor.lnum; | |
| 319 #ifdef FEAT_FOLDING | |
| 320 /* In a fold go to its last line. */ | |
| 321 (void)hasFolding(loff.lnum, NULL, &loff.lnum); | |
| 322 #endif | |
| 323 #ifdef FEAT_DIFF | |
| 324 loff.fill = 0; | |
| 325 n += curwin->w_filler_rows; | |
| 326 #endif | |
| 327 loff.height = 0; | |
| 328 while (loff.lnum < curwin->w_botline | |
| 329 #ifdef FEAT_DIFF | |
| 330 && (loff.lnum + 1 < curwin->w_botline || loff.fill == 0) | |
| 331 #endif | |
| 332 ) | |
| 333 { | |
| 334 n += loff.height; | |
| 335 if (n >= p_so) | |
| 336 break; | |
| 337 botline_forw(&loff); | |
| 338 } | |
| 339 if (n >= p_so) | |
| 340 /* sufficient context, no need to scroll */ | |
| 341 check_botline = FALSE; | |
| 1744 | 342 } |
| 343 else | |
| 344 /* sufficient context, no need to scroll */ | |
| 345 check_botline = FALSE; | |
| 7 | 346 } |
| 347 if (check_botline) | |
| 348 { | |
| 349 #ifdef FEAT_FOLDING | |
| 350 if (hasAnyFolding(curwin)) | |
| 351 { | |
| 352 /* Count the number of logical lines between the cursor and | |
| 353 * botline - p_so (approximation of how much will be | |
| 354 * scrolled). */ | |
| 355 line_count = 0; | |
| 356 for (lnum = curwin->w_cursor.lnum; | |
| 357 lnum >= curwin->w_botline - p_so; --lnum) | |
| 358 { | |
| 359 ++line_count; | |
| 360 /* stop at end of file or when we know we are far off */ | |
| 361 if (lnum <= 0 || line_count > curwin->w_height + 1) | |
| 362 break; | |
| 363 (void)hasFolding(lnum, &lnum, NULL); | |
| 364 } | |
| 365 } | |
| 366 else | |
| 367 #endif | |
| 368 line_count = curwin->w_cursor.lnum - curwin->w_botline | |
| 369 + 1 + p_so; | |
| 370 if (line_count <= curwin->w_height + 1) | |
| 532 | 371 scroll_cursor_bot(scrolljump_value(), FALSE); |
| 7 | 372 else |
| 373 scroll_cursor_halfway(FALSE); | |
| 374 } | |
| 375 } | |
| 376 } | |
| 377 curwin->w_valid |= VALID_TOPLINE; | |
| 378 | |
| 379 /* | |
| 380 * Need to redraw when topline changed. | |
| 381 */ | |
| 382 if (curwin->w_topline != old_topline | |
| 383 #ifdef FEAT_DIFF | |
| 384 || curwin->w_topfill != old_topfill | |
| 385 #endif | |
| 386 ) | |
| 387 { | |
| 3318 | 388 dollar_vcol = -1; |
| 740 | 389 if (curwin->w_skipcol != 0) |
| 7 | 390 { |
| 391 curwin->w_skipcol = 0; | |
| 392 redraw_later(NOT_VALID); | |
| 393 } | |
| 394 else | |
| 395 redraw_later(VALID); | |
| 396 /* May need to set w_skipcol when cursor in w_topline. */ | |
| 397 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 398 validate_cursor(); | |
| 399 } | |
| 400 | |
| 401 #ifdef FEAT_MOUSE | |
| 402 p_so = save_so; | |
| 403 #endif | |
| 404 } | |
| 405 | |
| 406 /* | |
| 532 | 407 * Return the scrolljump value to use for the current window. |
| 408 * When 'scrolljump' is positive use it as-is. | |
| 409 * When 'scrolljump' is negative use it as a percentage of the window height. | |
| 410 */ | |
| 411 static int | |
| 412 scrolljump_value() | |
| 413 { | |
| 414 if (p_sj >= 0) | |
| 415 return (int)p_sj; | |
| 416 return (curwin->w_height * -p_sj) / 100; | |
| 417 } | |
| 418 | |
| 419 /* | |
| 7 | 420 * Return TRUE when there are not 'scrolloff' lines above the cursor for the |
| 421 * current window. | |
| 422 */ | |
| 423 static int | |
| 424 check_top_offset() | |
| 425 { | |
| 426 lineoff_T loff; | |
| 427 int n; | |
| 428 | |
| 429 if (curwin->w_cursor.lnum < curwin->w_topline + p_so | |
| 430 #ifdef FEAT_FOLDING | |
| 431 || hasAnyFolding(curwin) | |
| 432 #endif | |
| 433 ) | |
| 434 { | |
| 435 loff.lnum = curwin->w_cursor.lnum; | |
| 436 #ifdef FEAT_DIFF | |
| 437 loff.fill = 0; | |
| 438 n = curwin->w_topfill; /* always have this context */ | |
| 439 #else | |
| 440 n = 0; | |
| 441 #endif | |
| 442 /* Count the visible screen lines above the cursor line. */ | |
| 443 while (n < p_so) | |
| 444 { | |
| 445 topline_back(&loff); | |
| 446 /* Stop when included a line above the window. */ | |
| 447 if (loff.lnum < curwin->w_topline | |
| 448 #ifdef FEAT_DIFF | |
| 449 || (loff.lnum == curwin->w_topline && loff.fill > 0) | |
| 450 #endif | |
| 451 ) | |
| 452 break; | |
| 453 n += loff.height; | |
| 454 } | |
| 455 if (n < p_so) | |
| 456 return TRUE; | |
| 457 } | |
| 458 return FALSE; | |
| 459 } | |
| 460 | |
| 461 void | |
| 462 update_curswant() | |
| 463 { | |
| 464 if (curwin->w_set_curswant) | |
| 465 { | |
| 466 validate_virtcol(); | |
| 467 curwin->w_curswant = curwin->w_virtcol; | |
| 468 curwin->w_set_curswant = FALSE; | |
| 469 } | |
| 470 } | |
| 471 | |
| 472 /* | |
| 473 * Check if the cursor has moved. Set the w_valid flag accordingly. | |
| 474 */ | |
| 475 void | |
| 476 check_cursor_moved(wp) | |
| 477 win_T *wp; | |
| 478 { | |
| 479 if (wp->w_cursor.lnum != wp->w_valid_cursor.lnum) | |
| 480 { | |
| 481 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 482 |VALID_CHEIGHT|VALID_CROW|VALID_TOPLINE); | |
| 483 wp->w_valid_cursor = wp->w_cursor; | |
| 484 wp->w_valid_leftcol = wp->w_leftcol; | |
| 485 } | |
| 486 else if (wp->w_cursor.col != wp->w_valid_cursor.col | |
| 487 || wp->w_leftcol != wp->w_valid_leftcol | |
| 488 #ifdef FEAT_VIRTUALEDIT | |
| 489 || wp->w_cursor.coladd != wp->w_valid_cursor.coladd | |
| 490 #endif | |
| 491 ) | |
| 492 { | |
| 493 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL); | |
| 494 wp->w_valid_cursor.col = wp->w_cursor.col; | |
| 495 wp->w_valid_leftcol = wp->w_leftcol; | |
| 496 #ifdef FEAT_VIRTUALEDIT | |
| 497 wp->w_valid_cursor.coladd = wp->w_cursor.coladd; | |
| 498 #endif | |
| 499 } | |
| 500 } | |
| 501 | |
| 502 /* | |
| 503 * Call this function when some window settings have changed, which require | |
| 504 * the cursor position, botline and topline to be recomputed and the window to | |
| 505 * be redrawn. E.g, when changing the 'wrap' option or folding. | |
| 506 */ | |
| 507 void | |
| 508 changed_window_setting() | |
| 509 { | |
| 510 changed_window_setting_win(curwin); | |
| 511 } | |
| 512 | |
| 513 void | |
| 514 changed_window_setting_win(wp) | |
| 515 win_T *wp; | |
| 516 { | |
| 517 wp->w_lines_valid = 0; | |
| 518 changed_line_abv_curs_win(wp); | |
| 519 wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP|VALID_TOPLINE); | |
| 520 redraw_win_later(wp, NOT_VALID); | |
| 521 } | |
| 522 | |
| 523 /* | |
| 524 * Set wp->w_topline to a certain number. | |
| 525 */ | |
| 526 void | |
| 527 set_topline(wp, lnum) | |
| 528 win_T *wp; | |
| 529 linenr_T lnum; | |
| 530 { | |
| 531 #ifdef FEAT_FOLDING | |
| 532 /* go to first of folded lines */ | |
| 533 (void)hasFoldingWin(wp, lnum, &lnum, NULL, TRUE, NULL); | |
| 534 #endif | |
| 535 /* Approximate the value of w_botline */ | |
| 536 wp->w_botline += lnum - wp->w_topline; | |
| 537 wp->w_topline = lnum; | |
| 1744 | 538 #ifdef FEAT_AUTOCMD |
| 539 wp->w_topline_was_set = TRUE; | |
| 540 #endif | |
| 7 | 541 #ifdef FEAT_DIFF |
| 542 wp->w_topfill = 0; | |
| 543 #endif | |
| 544 wp->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_TOPLINE); | |
| 545 /* Don't set VALID_TOPLINE here, 'scrolloff' needs to be checked. */ | |
| 546 redraw_later(VALID); | |
| 547 } | |
| 548 | |
| 549 /* | |
| 550 * Call this function when the length of the cursor line (in screen | |
| 551 * characters) has changed, and the change is before the cursor. | |
| 552 * Need to take care of w_botline separately! | |
| 553 */ | |
| 554 void | |
| 555 changed_cline_bef_curs() | |
| 556 { | |
| 557 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 558 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 559 } | |
| 560 | |
| 561 void | |
| 562 changed_cline_bef_curs_win(wp) | |
| 563 win_T *wp; | |
| 564 { | |
| 565 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 566 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 567 } | |
| 568 | |
| 569 /* | |
| 570 * Call this function when the length of a line (in screen characters) above | |
| 571 * the cursor have changed. | |
| 572 * Need to take care of w_botline separately! | |
| 573 */ | |
| 574 void | |
| 575 changed_line_abv_curs() | |
| 576 { | |
| 577 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
| 578 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 579 } | |
| 580 | |
| 581 void | |
| 582 changed_line_abv_curs_win(wp) | |
| 583 win_T *wp; | |
| 584 { | |
| 585 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
| 586 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 587 } | |
| 588 | |
| 589 /* | |
| 590 * Make sure the value of curwin->w_botline is valid. | |
| 591 */ | |
| 592 void | |
| 593 validate_botline() | |
| 594 { | |
| 595 if (!(curwin->w_valid & VALID_BOTLINE)) | |
| 596 comp_botline(curwin); | |
| 597 } | |
| 598 | |
| 599 /* | |
| 600 * Make sure the value of wp->w_botline is valid. | |
| 601 */ | |
| 602 static void | |
| 603 validate_botline_win(wp) | |
| 604 win_T *wp; | |
| 605 { | |
| 606 if (!(wp->w_valid & VALID_BOTLINE)) | |
| 607 comp_botline(wp); | |
| 608 } | |
| 609 | |
| 610 /* | |
| 611 * Mark curwin->w_botline as invalid (because of some change in the buffer). | |
| 612 */ | |
| 613 void | |
| 614 invalidate_botline() | |
| 615 { | |
| 616 curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 617 } | |
| 618 | |
| 619 void | |
| 620 invalidate_botline_win(wp) | |
| 621 win_T *wp; | |
| 622 { | |
| 623 wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 624 } | |
| 625 | |
| 626 void | |
| 627 approximate_botline_win(wp) | |
| 628 win_T *wp; | |
| 629 { | |
| 630 wp->w_valid &= ~VALID_BOTLINE; | |
| 631 } | |
| 632 | |
| 633 /* | |
| 634 * Return TRUE if curwin->w_wrow and curwin->w_wcol are valid. | |
| 635 */ | |
| 636 int | |
| 637 cursor_valid() | |
| 638 { | |
| 639 check_cursor_moved(curwin); | |
| 640 return ((curwin->w_valid & (VALID_WROW|VALID_WCOL)) == | |
| 641 (VALID_WROW|VALID_WCOL)); | |
| 642 } | |
| 643 | |
| 644 /* | |
| 645 * Validate cursor position. Makes sure w_wrow and w_wcol are valid. | |
| 646 * w_topline must be valid, you may need to call update_topline() first! | |
| 647 */ | |
| 648 void | |
| 649 validate_cursor() | |
| 650 { | |
| 651 check_cursor_moved(curwin); | |
| 652 if ((curwin->w_valid & (VALID_WCOL|VALID_WROW)) != (VALID_WCOL|VALID_WROW)) | |
| 653 curs_columns(TRUE); | |
| 654 } | |
| 655 | |
| 656 #if defined(FEAT_GUI) || defined(PROTO) | |
| 657 /* | |
| 658 * validate w_cline_row. | |
| 659 */ | |
| 660 void | |
| 661 validate_cline_row() | |
| 662 { | |
| 663 /* | |
| 664 * First make sure that w_topline is valid (after moving the cursor). | |
| 665 */ | |
| 666 update_topline(); | |
| 667 check_cursor_moved(curwin); | |
| 668 if (!(curwin->w_valid & VALID_CROW)) | |
| 669 curs_rows(curwin, FALSE); | |
| 670 } | |
| 671 #endif | |
| 672 | |
| 673 /* | |
| 674 * Compute wp->w_cline_row and wp->w_cline_height, based on the current value | |
|
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675 * of wp->w_topline. |
| 7 | 676 * |
| 677 * Returns OK when cursor is in the window, FAIL when it isn't. | |
| 678 */ | |
| 679 static void | |
| 680 curs_rows(wp, do_botline) | |
| 681 win_T *wp; | |
| 682 int do_botline; /* also compute w_botline */ | |
| 683 { | |
| 684 linenr_T lnum; | |
| 685 int i; | |
| 686 int all_invalid; | |
| 687 int valid; | |
| 688 #ifdef FEAT_FOLDING | |
| 689 long fold_count; | |
| 690 #endif | |
| 691 | |
| 692 /* Check if wp->w_lines[].wl_size is invalid */ | |
| 693 all_invalid = (!redrawing() | |
| 694 || wp->w_lines_valid == 0 | |
| 695 || wp->w_lines[0].wl_lnum > wp->w_topline); | |
| 696 i = 0; | |
| 697 wp->w_cline_row = 0; | |
| 698 for (lnum = wp->w_topline; lnum < wp->w_cursor.lnum; ++i) | |
| 699 { | |
| 700 valid = FALSE; | |
| 701 if (!all_invalid && i < wp->w_lines_valid) | |
| 702 { | |
| 703 if (wp->w_lines[i].wl_lnum < lnum || !wp->w_lines[i].wl_valid) | |
| 704 continue; /* skip changed or deleted lines */ | |
| 705 if (wp->w_lines[i].wl_lnum == lnum) | |
| 706 { | |
| 707 #ifdef FEAT_FOLDING | |
| 708 /* Check for newly inserted lines below this row, in which | |
| 709 * case we need to check for folded lines. */ | |
| 710 if (!wp->w_buffer->b_mod_set | |
| 711 || wp->w_lines[i].wl_lastlnum < wp->w_cursor.lnum | |
| 712 || wp->w_buffer->b_mod_top | |
| 713 > wp->w_lines[i].wl_lastlnum + 1) | |
| 714 #endif | |
| 715 valid = TRUE; | |
| 716 } | |
| 717 else if (wp->w_lines[i].wl_lnum > lnum) | |
| 718 --i; /* hold at inserted lines */ | |
| 719 } | |
| 720 if (valid | |
| 721 #ifdef FEAT_DIFF | |
| 722 && (lnum != wp->w_topline || !wp->w_p_diff) | |
| 723 #endif | |
| 724 ) | |
| 725 { | |
| 726 #ifdef FEAT_FOLDING | |
| 727 lnum = wp->w_lines[i].wl_lastlnum + 1; | |
| 728 /* Cursor inside folded lines, don't count this row */ | |
| 729 if (lnum > wp->w_cursor.lnum) | |
| 730 break; | |
| 731 #else | |
| 732 ++lnum; | |
| 733 #endif | |
| 734 wp->w_cline_row += wp->w_lines[i].wl_size; | |
| 735 } | |
| 736 else | |
| 737 { | |
| 738 #ifdef FEAT_FOLDING | |
| 739 fold_count = foldedCount(wp, lnum, NULL); | |
| 740 if (fold_count) | |
| 741 { | |
| 742 lnum += fold_count; | |
| 743 if (lnum > wp->w_cursor.lnum) | |
| 744 break; | |
| 745 ++wp->w_cline_row; | |
| 746 } | |
| 747 else | |
| 748 #endif | |
| 749 #ifdef FEAT_DIFF | |
| 750 if (lnum == wp->w_topline) | |
| 751 wp->w_cline_row += plines_win_nofill(wp, lnum++, TRUE) | |
| 752 + wp->w_topfill; | |
| 753 else | |
| 754 #endif | |
| 755 wp->w_cline_row += plines_win(wp, lnum++, TRUE); | |
| 756 } | |
| 757 } | |
| 758 | |
| 759 check_cursor_moved(wp); | |
| 760 if (!(wp->w_valid & VALID_CHEIGHT)) | |
| 761 { | |
| 762 if (all_invalid | |
| 763 || i == wp->w_lines_valid | |
| 764 || (i < wp->w_lines_valid | |
| 765 && (!wp->w_lines[i].wl_valid | |
| 766 || wp->w_lines[i].wl_lnum != wp->w_cursor.lnum))) | |
| 767 { | |
| 768 #ifdef FEAT_DIFF | |
| 769 if (wp->w_cursor.lnum == wp->w_topline) | |
| 770 wp->w_cline_height = plines_win_nofill(wp, wp->w_cursor.lnum, | |
| 771 TRUE) + wp->w_topfill; | |
| 772 else | |
| 773 #endif | |
| 774 wp->w_cline_height = plines_win(wp, wp->w_cursor.lnum, TRUE); | |
| 775 #ifdef FEAT_FOLDING | |
| 776 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
| 777 NULL, NULL, TRUE, NULL); | |
| 778 #endif | |
| 779 } | |
| 780 else if (i > wp->w_lines_valid) | |
| 781 { | |
| 782 /* a line that is too long to fit on the last screen line */ | |
| 783 wp->w_cline_height = 0; | |
| 784 #ifdef FEAT_FOLDING | |
| 785 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
| 786 NULL, NULL, TRUE, NULL); | |
| 787 #endif | |
| 788 } | |
| 789 else | |
| 790 { | |
| 791 wp->w_cline_height = wp->w_lines[i].wl_size; | |
| 792 #ifdef FEAT_FOLDING | |
| 793 wp->w_cline_folded = wp->w_lines[i].wl_folded; | |
| 794 #endif | |
| 795 } | |
| 796 } | |
| 797 | |
| 5764 | 798 redraw_for_cursorline(curwin); |
| 7 | 799 wp->w_valid |= VALID_CROW|VALID_CHEIGHT; |
| 800 | |
| 801 /* validate botline too, if update_screen doesn't do it */ | |
| 802 if (do_botline && all_invalid) | |
| 803 validate_botline_win(wp); | |
| 804 } | |
| 805 | |
| 806 /* | |
| 807 * Validate curwin->w_virtcol only. | |
| 808 */ | |
| 809 void | |
| 810 validate_virtcol() | |
| 811 { | |
| 812 validate_virtcol_win(curwin); | |
| 813 } | |
| 814 | |
| 815 /* | |
| 816 * Validate wp->w_virtcol only. | |
| 817 */ | |
| 818 void | |
| 819 validate_virtcol_win(wp) | |
| 820 win_T *wp; | |
| 821 { | |
| 822 check_cursor_moved(wp); | |
| 823 if (!(wp->w_valid & VALID_VIRTCOL)) | |
| 824 { | |
| 825 getvvcol(wp, &wp->w_cursor, NULL, &(wp->w_virtcol), NULL); | |
| 826 wp->w_valid |= VALID_VIRTCOL; | |
| 740 | 827 #ifdef FEAT_SYN_HL |
| 752 | 828 if (wp->w_p_cuc |
| 829 # ifdef FEAT_INS_EXPAND | |
| 830 && !pum_visible() | |
| 831 # endif | |
| 832 ) | |
| 740 | 833 redraw_win_later(wp, SOME_VALID); |
| 834 #endif | |
| 7 | 835 } |
| 836 } | |
| 837 | |
| 838 /* | |
| 839 * Validate curwin->w_cline_height only. | |
| 840 */ | |
| 841 static void | |
| 842 validate_cheight() | |
| 843 { | |
| 844 check_cursor_moved(curwin); | |
| 845 if (!(curwin->w_valid & VALID_CHEIGHT)) | |
| 846 { | |
| 847 #ifdef FEAT_DIFF | |
| 848 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 849 curwin->w_cline_height = plines_nofill(curwin->w_cursor.lnum) | |
| 850 + curwin->w_topfill; | |
| 851 else | |
| 852 #endif | |
| 853 curwin->w_cline_height = plines(curwin->w_cursor.lnum); | |
| 854 #ifdef FEAT_FOLDING | |
| 855 curwin->w_cline_folded = hasFolding(curwin->w_cursor.lnum, NULL, NULL); | |
| 856 #endif | |
| 857 curwin->w_valid |= VALID_CHEIGHT; | |
| 858 } | |
| 859 } | |
| 860 | |
| 861 /* | |
| 1668 | 862 * Validate w_wcol and w_virtcol only. |
| 7 | 863 */ |
| 864 void | |
| 865 validate_cursor_col() | |
| 866 { | |
| 867 colnr_T off; | |
| 868 colnr_T col; | |
|
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diff
changeset
|
869 int width; |
| 7 | 870 |
| 871 validate_virtcol(); | |
| 872 if (!(curwin->w_valid & VALID_WCOL)) | |
| 873 { | |
| 874 col = curwin->w_virtcol; | |
| 875 off = curwin_col_off(); | |
| 876 col += off; | |
|
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diff
changeset
|
877 width = W_WIDTH(curwin) - off + curwin_col_off2(); |
| 7 | 878 |
| 879 /* long line wrapping, adjust curwin->w_wrow */ | |
| 1668 | 880 if (curwin->w_p_wrap |
| 881 && col >= (colnr_T)W_WIDTH(curwin) | |
|
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|
882 && width > 0) |
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diff
changeset
|
883 /* use same formula as what is used in curs_columns() */ |
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diff
changeset
|
884 col -= ((col - W_WIDTH(curwin)) / width + 1) * width; |
| 1668 | 885 if (col > (int)curwin->w_leftcol) |
| 886 col -= curwin->w_leftcol; | |
| 887 else | |
| 888 col = 0; | |
| 7 | 889 curwin->w_wcol = col; |
| 1668 | 890 |
| 7 | 891 curwin->w_valid |= VALID_WCOL; |
| 892 } | |
| 893 } | |
| 894 | |
| 895 /* | |
|
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|
896 * Compute offset of a window, occupied by absolute or relative line number, |
|
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|
897 * fold column and sign column (these don't move when scrolling horizontally). |
| 7 | 898 */ |
| 899 int | |
| 900 win_col_off(wp) | |
| 901 win_T *wp; | |
| 902 { | |
|
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|
903 return (((wp->w_p_nu || wp->w_p_rnu) ? number_width(wp) + 1 : 0) |
| 7 | 904 #ifdef FEAT_CMDWIN |
| 905 + (cmdwin_type == 0 || wp != curwin ? 0 : 1) | |
| 906 #endif | |
| 907 #ifdef FEAT_FOLDING | |
| 908 + wp->w_p_fdc | |
| 909 #endif | |
| 910 #ifdef FEAT_SIGNS | |
| 911 + ( | |
| 912 # ifdef FEAT_NETBEANS_INTG | |
| 2210 | 913 /* show glyph gutter in netbeans */ |
| 914 netbeans_active() || | |
| 7 | 915 # endif |
| 916 wp->w_buffer->b_signlist != NULL ? 2 : 0) | |
| 917 #endif | |
| 918 ); | |
| 919 } | |
| 920 | |
| 921 int | |
| 922 curwin_col_off() | |
| 923 { | |
| 924 return win_col_off(curwin); | |
| 925 } | |
| 926 | |
| 927 /* | |
| 928 * Return the difference in column offset for the second screen line of a | |
|
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|
929 * wrapped line. It's 8 if 'number' or 'relativenumber' is on and 'n' is in |
|
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|
930 * 'cpoptions'. |
| 7 | 931 */ |
| 932 int | |
| 933 win_col_off2(wp) | |
| 934 win_T *wp; | |
| 935 { | |
|
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|
936 if ((wp->w_p_nu || wp->w_p_rnu) && vim_strchr(p_cpo, CPO_NUMCOL) != NULL) |
| 13 | 937 return number_width(wp) + 1; |
| 7 | 938 return 0; |
| 939 } | |
| 940 | |
| 941 int | |
| 942 curwin_col_off2() | |
| 943 { | |
| 944 return win_col_off2(curwin); | |
| 945 } | |
| 946 | |
| 947 /* | |
| 948 * compute curwin->w_wcol and curwin->w_virtcol. | |
| 949 * Also updates curwin->w_wrow and curwin->w_cline_row. | |
| 950 * Also updates curwin->w_leftcol. | |
| 951 */ | |
| 952 void | |
| 3263 | 953 curs_columns(may_scroll) |
| 954 int may_scroll; /* when TRUE, may scroll horizontally */ | |
| 7 | 955 { |
| 956 int diff; | |
| 957 int extra; /* offset for first screen line */ | |
| 958 int off_left, off_right; | |
| 959 int n; | |
| 960 int p_lines; | |
| 961 int width = 0; | |
| 962 int textwidth; | |
| 963 int new_leftcol; | |
| 964 colnr_T startcol; | |
| 965 colnr_T endcol; | |
| 966 colnr_T prev_skipcol; | |
| 967 | |
| 968 /* | |
| 969 * First make sure that w_topline is valid (after moving the cursor). | |
| 970 */ | |
| 971 update_topline(); | |
| 972 | |
| 973 /* | |
| 974 * Next make sure that w_cline_row is valid. | |
| 975 */ | |
| 976 if (!(curwin->w_valid & VALID_CROW)) | |
| 977 curs_rows(curwin, FALSE); | |
| 978 | |
| 979 /* | |
| 980 * Compute the number of virtual columns. | |
| 981 */ | |
| 982 #ifdef FEAT_FOLDING | |
| 983 if (curwin->w_cline_folded) | |
| 984 /* In a folded line the cursor is always in the first column */ | |
| 985 startcol = curwin->w_virtcol = endcol = curwin->w_leftcol; | |
| 986 else | |
| 987 #endif | |
| 988 getvvcol(curwin, &curwin->w_cursor, | |
| 989 &startcol, &(curwin->w_virtcol), &endcol); | |
| 990 | |
| 991 /* remove '$' from change command when cursor moves onto it */ | |
| 992 if (startcol > dollar_vcol) | |
| 3318 | 993 dollar_vcol = -1; |
| 7 | 994 |
| 995 extra = curwin_col_off(); | |
| 996 curwin->w_wcol = curwin->w_virtcol + extra; | |
| 997 endcol += extra; | |
| 998 | |
| 999 /* | |
| 1000 * Now compute w_wrow, counting screen lines from w_cline_row. | |
| 1001 */ | |
| 1002 curwin->w_wrow = curwin->w_cline_row; | |
| 1003 | |
| 1004 textwidth = W_WIDTH(curwin) - extra; | |
| 1005 if (textwidth <= 0) | |
| 1006 { | |
| 1007 /* No room for text, put cursor in last char of window. */ | |
| 1008 curwin->w_wcol = W_WIDTH(curwin) - 1; | |
| 1009 curwin->w_wrow = curwin->w_height - 1; | |
| 1010 } | |
| 1011 else if (curwin->w_p_wrap | |
| 1012 #ifdef FEAT_VERTSPLIT | |
| 1013 && curwin->w_width != 0 | |
| 1014 #endif | |
| 1015 ) | |
| 1016 { | |
| 1017 width = textwidth + curwin_col_off2(); | |
| 1018 | |
| 1019 /* long line wrapping, adjust curwin->w_wrow */ | |
| 1020 if (curwin->w_wcol >= W_WIDTH(curwin)) | |
| 1021 { | |
|
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diff
changeset
|
1022 /* this same formula is used in validate_cursor_col() */ |
| 7 | 1023 n = (curwin->w_wcol - W_WIDTH(curwin)) / width + 1; |
| 1024 curwin->w_wcol -= n * width; | |
| 1025 curwin->w_wrow += n; | |
| 1026 | |
| 1027 #ifdef FEAT_LINEBREAK | |
| 1028 /* When cursor wraps to first char of next line in Insert | |
| 1029 * mode, the 'showbreak' string isn't shown, backup to first | |
| 1030 * column */ | |
| 1031 if (*p_sbr && *ml_get_cursor() == NUL | |
| 1032 && curwin->w_wcol == (int)vim_strsize(p_sbr)) | |
| 1033 curwin->w_wcol = 0; | |
| 1034 #endif | |
| 1035 } | |
| 1036 } | |
| 1037 | |
| 1038 /* No line wrapping: compute curwin->w_leftcol if scrolling is on and line | |
| 1039 * is not folded. | |
| 1040 * If scrolling is off, curwin->w_leftcol is assumed to be 0 */ | |
| 3263 | 1041 else if (may_scroll |
| 7 | 1042 #ifdef FEAT_FOLDING |
| 1043 && !curwin->w_cline_folded | |
| 1044 #endif | |
| 1045 ) | |
| 1046 { | |
| 1047 /* | |
| 1048 * If Cursor is left of the screen, scroll rightwards. | |
| 1049 * If Cursor is right of the screen, scroll leftwards | |
| 1050 * If we get closer to the edge than 'sidescrolloff', scroll a little | |
| 1051 * extra | |
| 1052 */ | |
| 1053 off_left = (int)startcol - (int)curwin->w_leftcol - p_siso; | |
| 1054 off_right = (int)endcol - (int)(curwin->w_leftcol + W_WIDTH(curwin) | |
| 1055 - p_siso) + 1; | |
| 1056 if (off_left < 0 || off_right > 0) | |
| 1057 { | |
| 1058 if (off_left < 0) | |
| 1059 diff = -off_left; | |
| 1060 else | |
| 1061 diff = off_right; | |
| 1062 | |
| 1063 /* When far off or not enough room on either side, put cursor in | |
| 1064 * middle of window. */ | |
| 1065 if (p_ss == 0 || diff >= textwidth / 2 || off_right >= off_left) | |
| 1066 new_leftcol = curwin->w_wcol - extra - textwidth / 2; | |
| 1067 else | |
| 1068 { | |
| 1069 if (diff < p_ss) | |
| 1070 diff = p_ss; | |
| 1071 if (off_left < 0) | |
| 1072 new_leftcol = curwin->w_leftcol - diff; | |
| 1073 else | |
| 1074 new_leftcol = curwin->w_leftcol + diff; | |
| 1075 } | |
| 1076 if (new_leftcol < 0) | |
| 1077 new_leftcol = 0; | |
| 1078 if (new_leftcol != (int)curwin->w_leftcol) | |
| 1079 { | |
| 1080 curwin->w_leftcol = new_leftcol; | |
| 1081 /* screen has to be redrawn with new curwin->w_leftcol */ | |
| 1082 redraw_later(NOT_VALID); | |
| 1083 } | |
| 1084 } | |
| 1085 curwin->w_wcol -= curwin->w_leftcol; | |
| 1086 } | |
| 1087 else if (curwin->w_wcol > (int)curwin->w_leftcol) | |
| 1088 curwin->w_wcol -= curwin->w_leftcol; | |
| 1089 else | |
| 1090 curwin->w_wcol = 0; | |
| 1091 | |
| 1092 #ifdef FEAT_DIFF | |
| 1093 /* Skip over filler lines. At the top use w_topfill, there | |
| 1094 * may be some filler lines above the window. */ | |
| 1095 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 1096 curwin->w_wrow += curwin->w_topfill; | |
| 1097 else | |
| 1098 curwin->w_wrow += diff_check_fill(curwin, curwin->w_cursor.lnum); | |
| 1099 #endif | |
| 1100 | |
| 1101 prev_skipcol = curwin->w_skipcol; | |
| 1102 | |
| 1103 p_lines = 0; | |
| 1104 if ((curwin->w_wrow >= curwin->w_height | |
| 1105 || ((prev_skipcol > 0 | |
| 1106 || curwin->w_wrow + p_so >= curwin->w_height) | |
| 1107 && (p_lines = | |
| 1108 #ifdef FEAT_DIFF | |
| 1109 plines_win_nofill | |
| 1110 #else | |
| 1111 plines_win | |
| 1112 #endif | |
| 1113 (curwin, curwin->w_cursor.lnum, FALSE)) | |
| 1114 - 1 >= curwin->w_height)) | |
| 1115 && curwin->w_height != 0 | |
| 1116 && curwin->w_cursor.lnum == curwin->w_topline | |
| 1117 && width > 0 | |
| 1118 #ifdef FEAT_VERTSPLIT | |
| 1119 && curwin->w_width != 0 | |
| 1120 #endif | |
| 1121 ) | |
| 1122 { | |
| 1123 /* Cursor past end of screen. Happens with a single line that does | |
| 1124 * not fit on screen. Find a skipcol to show the text around the | |
| 1125 * cursor. Avoid scrolling all the time. compute value of "extra": | |
| 1126 * 1: Less than "p_so" lines above | |
| 1127 * 2: Less than "p_so" lines below | |
| 1128 * 3: both of them */ | |
| 1129 extra = 0; | |
| 1130 if (curwin->w_skipcol + p_so * width > curwin->w_virtcol) | |
| 1131 extra = 1; | |
| 1132 /* Compute last display line of the buffer line that we want at the | |
| 1133 * bottom of the window. */ | |
| 1134 if (p_lines == 0) | |
| 1135 p_lines = plines_win(curwin, curwin->w_cursor.lnum, FALSE); | |
| 1136 --p_lines; | |
| 1137 if (p_lines > curwin->w_wrow + p_so) | |
| 1138 n = curwin->w_wrow + p_so; | |
| 1139 else | |
| 1140 n = p_lines; | |
| 1141 if ((colnr_T)n >= curwin->w_height + curwin->w_skipcol / width) | |
| 1142 extra += 2; | |
| 1143 | |
| 1144 if (extra == 3 || p_lines < p_so * 2) | |
| 1145 { | |
| 1146 /* not enough room for 'scrolloff', put cursor in the middle */ | |
| 1147 n = curwin->w_virtcol / width; | |
| 1148 if (n > curwin->w_height / 2) | |
| 1149 n -= curwin->w_height / 2; | |
| 1150 else | |
| 1151 n = 0; | |
| 1152 /* don't skip more than necessary */ | |
| 1153 if (n > p_lines - curwin->w_height + 1) | |
| 1154 n = p_lines - curwin->w_height + 1; | |
| 1155 curwin->w_skipcol = n * width; | |
| 1156 } | |
| 1157 else if (extra == 1) | |
| 1158 { | |
| 1159 /* less then 'scrolloff' lines above, decrease skipcol */ | |
| 1160 extra = (curwin->w_skipcol + p_so * width - curwin->w_virtcol | |
| 1161 + width - 1) / width; | |
| 1162 if (extra > 0) | |
| 1163 { | |
| 1164 if ((colnr_T)(extra * width) > curwin->w_skipcol) | |
| 1165 extra = curwin->w_skipcol / width; | |
| 1166 curwin->w_skipcol -= extra * width; | |
| 1167 } | |
| 1168 } | |
| 1169 else if (extra == 2) | |
| 1170 { | |
| 1171 /* less then 'scrolloff' lines below, increase skipcol */ | |
| 1172 endcol = (n - curwin->w_height + 1) * width; | |
| 1173 while (endcol > curwin->w_virtcol) | |
| 1174 endcol -= width; | |
| 1175 if (endcol > curwin->w_skipcol) | |
| 1176 curwin->w_skipcol = endcol; | |
| 1177 } | |
| 1178 | |
| 1179 curwin->w_wrow -= curwin->w_skipcol / width; | |
| 1180 if (curwin->w_wrow >= curwin->w_height) | |
| 1181 { | |
| 1182 /* small window, make sure cursor is in it */ | |
| 1183 extra = curwin->w_wrow - curwin->w_height + 1; | |
| 1184 curwin->w_skipcol += extra * width; | |
| 1185 curwin->w_wrow -= extra; | |
| 1186 } | |
| 1187 | |
| 1188 extra = ((int)prev_skipcol - (int)curwin->w_skipcol) / width; | |
| 1189 if (extra > 0) | |
| 1190 win_ins_lines(curwin, 0, extra, FALSE, FALSE); | |
| 1191 else if (extra < 0) | |
| 1192 win_del_lines(curwin, 0, -extra, FALSE, FALSE); | |
| 1193 } | |
| 1194 else | |
| 1195 curwin->w_skipcol = 0; | |
| 1196 if (prev_skipcol != curwin->w_skipcol) | |
| 1197 redraw_later(NOT_VALID); | |
| 1198 | |
| 740 | 1199 #ifdef FEAT_SYN_HL |
| 5749 | 1200 /* Redraw when w_virtcol changes and 'cursorcolumn' is set */ |
| 1201 if (curwin->w_p_cuc && (curwin->w_valid & VALID_VIRTCOL) == 0 | |
| 1202 # ifdef FEAT_INS_EXPAND | |
| 1203 && !pum_visible() | |
| 1204 # endif | |
| 1205 ) | |
| 1206 redraw_later(SOME_VALID); | |
|
2178
c6f1aa1e9f32
Add 'relativenumber' patch from Markus Heidelberg.
Bram Moolenaar <bram@vim.org>
parents:
2154
diff
changeset
|
1207 #endif |
| 740 | 1208 |
| 7 | 1209 curwin->w_valid |= VALID_WCOL|VALID_WROW|VALID_VIRTCOL; |
| 1210 } | |
| 1211 | |
| 1212 /* | |
| 1213 * Scroll the current window down by "line_count" logical lines. "CTRL-Y" | |
| 1214 */ | |
| 1215 void | |
| 1216 scrolldown(line_count, byfold) | |
| 1217 long line_count; | |
| 1877 | 1218 int byfold UNUSED; /* TRUE: count a closed fold as one line */ |
| 7 | 1219 { |
| 1220 long done = 0; /* total # of physical lines done */ | |
| 1221 int wrow; | |
| 1222 int moved = FALSE; | |
| 1223 | |
| 1224 #ifdef FEAT_FOLDING | |
| 1225 linenr_T first; | |
| 1226 | |
| 1227 /* Make sure w_topline is at the first of a sequence of folded lines. */ | |
| 1228 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 1229 #endif | |
| 1230 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1231 while (line_count-- > 0) | |
| 1232 { | |
| 1233 #ifdef FEAT_DIFF | |
| 1980 | 1234 if (curwin->w_topfill < diff_check(curwin, curwin->w_topline) |
| 1235 && curwin->w_topfill < curwin->w_height - 1) | |
| 7 | 1236 { |
| 1237 ++curwin->w_topfill; | |
| 1238 ++done; | |
| 1239 } | |
| 1240 else | |
| 1241 #endif | |
| 1242 { | |
| 1243 if (curwin->w_topline == 1) | |
| 1244 break; | |
| 1245 --curwin->w_topline; | |
| 1246 #ifdef FEAT_DIFF | |
| 1247 curwin->w_topfill = 0; | |
| 1248 #endif | |
| 1249 #ifdef FEAT_FOLDING | |
| 1250 /* A sequence of folded lines only counts for one logical line */ | |
| 1251 if (hasFolding(curwin->w_topline, &first, NULL)) | |
| 1252 { | |
| 1253 ++done; | |
| 1254 if (!byfold) | |
| 1255 line_count -= curwin->w_topline - first - 1; | |
| 1256 curwin->w_botline -= curwin->w_topline - first; | |
| 1257 curwin->w_topline = first; | |
| 1258 } | |
| 1259 else | |
| 1260 #endif | |
| 1261 #ifdef FEAT_DIFF | |
| 1262 done += plines_nofill(curwin->w_topline); | |
| 1263 #else | |
| 1264 done += plines(curwin->w_topline); | |
| 1265 #endif | |
| 1266 } | |
| 1267 --curwin->w_botline; /* approximate w_botline */ | |
| 1268 invalidate_botline(); | |
| 1269 } | |
| 1270 curwin->w_wrow += done; /* keep w_wrow updated */ | |
| 1271 curwin->w_cline_row += done; /* keep w_cline_row updated */ | |
| 1272 | |
| 1273 #ifdef FEAT_DIFF | |
| 1274 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 1275 curwin->w_cline_row = 0; | |
| 1276 check_topfill(curwin, TRUE); | |
| 1277 #endif | |
| 1278 | |
| 1279 /* | |
| 1280 * Compute the row number of the last row of the cursor line | |
| 1281 * and move the cursor onto the displayed part of the window. | |
| 1282 */ | |
| 1283 wrow = curwin->w_wrow; | |
| 1284 if (curwin->w_p_wrap | |
| 1285 #ifdef FEAT_VERTSPLIT | |
| 1286 && curwin->w_width != 0 | |
| 1287 #endif | |
| 1288 ) | |
| 1289 { | |
| 1290 validate_virtcol(); | |
| 1291 validate_cheight(); | |
| 1292 wrow += curwin->w_cline_height - 1 - | |
| 1293 curwin->w_virtcol / W_WIDTH(curwin); | |
| 1294 } | |
| 1295 while (wrow >= curwin->w_height && curwin->w_cursor.lnum > 1) | |
| 1296 { | |
| 1297 #ifdef FEAT_FOLDING | |
| 1298 if (hasFolding(curwin->w_cursor.lnum, &first, NULL)) | |
| 1299 { | |
| 1300 --wrow; | |
| 1301 if (first == 1) | |
| 1302 curwin->w_cursor.lnum = 1; | |
| 1303 else | |
| 1304 curwin->w_cursor.lnum = first - 1; | |
| 1305 } | |
| 1306 else | |
| 1307 #endif | |
| 1308 wrow -= plines(curwin->w_cursor.lnum--); | |
| 1309 curwin->w_valid &= | |
| 1310 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
| 1311 moved = TRUE; | |
| 1312 } | |
| 1313 if (moved) | |
| 1314 { | |
| 1315 #ifdef FEAT_FOLDING | |
| 1316 /* Move cursor to first line of closed fold. */ | |
| 1317 foldAdjustCursor(); | |
| 1318 #endif | |
| 1319 coladvance(curwin->w_curswant); | |
| 1320 } | |
| 1321 } | |
| 1322 | |
| 1323 /* | |
| 1324 * Scroll the current window up by "line_count" logical lines. "CTRL-E" | |
| 1325 */ | |
| 1326 void | |
| 1327 scrollup(line_count, byfold) | |
| 1328 long line_count; | |
| 1877 | 1329 int byfold UNUSED; /* TRUE: count a closed fold as one line */ |
| 7 | 1330 { |
| 1331 #if defined(FEAT_FOLDING) || defined(FEAT_DIFF) | |
| 1332 linenr_T lnum; | |
| 1333 | |
| 1334 if ( | |
| 1335 # ifdef FEAT_FOLDING | |
| 1336 (byfold && hasAnyFolding(curwin)) | |
| 1337 # ifdef FEAT_DIFF | |
| 1338 || | |
| 1339 # endif | |
| 1340 # endif | |
| 1341 # ifdef FEAT_DIFF | |
| 1342 curwin->w_p_diff | |
| 1343 # endif | |
| 1344 ) | |
| 1345 { | |
| 1346 /* count each sequence of folded lines as one logical line */ | |
| 1347 lnum = curwin->w_topline; | |
| 1348 while (line_count--) | |
| 1349 { | |
| 1350 # ifdef FEAT_DIFF | |
| 1351 if (curwin->w_topfill > 0) | |
| 1352 --curwin->w_topfill; | |
| 1353 else | |
| 1354 # endif | |
| 1355 { | |
| 1356 # ifdef FEAT_FOLDING | |
| 1357 if (byfold) | |
| 1358 (void)hasFolding(lnum, NULL, &lnum); | |
| 1359 # endif | |
| 1360 if (lnum >= curbuf->b_ml.ml_line_count) | |
| 1361 break; | |
| 1362 ++lnum; | |
| 1363 # ifdef FEAT_DIFF | |
| 1364 curwin->w_topfill = diff_check_fill(curwin, lnum); | |
| 1365 # endif | |
| 1366 } | |
| 1367 } | |
| 1368 /* approximate w_botline */ | |
| 1369 curwin->w_botline += lnum - curwin->w_topline; | |
| 1370 curwin->w_topline = lnum; | |
| 1371 } | |
| 1372 else | |
| 1373 #endif | |
| 1374 { | |
| 1375 curwin->w_topline += line_count; | |
| 1376 curwin->w_botline += line_count; /* approximate w_botline */ | |
| 1377 } | |
| 1378 | |
| 1379 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
| 1380 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
| 1381 if (curwin->w_botline > curbuf->b_ml.ml_line_count + 1) | |
| 1382 curwin->w_botline = curbuf->b_ml.ml_line_count + 1; | |
| 1383 | |
| 1384 #ifdef FEAT_DIFF | |
| 1385 check_topfill(curwin, FALSE); | |
| 1386 #endif | |
| 1387 | |
| 1388 #ifdef FEAT_FOLDING | |
| 1389 if (hasAnyFolding(curwin)) | |
| 1390 /* Make sure w_topline is at the first of a sequence of folded lines. */ | |
| 1391 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 1392 #endif | |
| 1393 | |
| 1394 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1395 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 1396 { | |
| 1397 curwin->w_cursor.lnum = curwin->w_topline; | |
| 1398 curwin->w_valid &= | |
| 1399 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
| 1400 coladvance(curwin->w_curswant); | |
| 1401 } | |
| 1402 } | |
| 1403 | |
| 1404 #ifdef FEAT_DIFF | |
| 1405 /* | |
| 1406 * Don't end up with too many filler lines in the window. | |
| 1407 */ | |
| 1408 void | |
| 1409 check_topfill(wp, down) | |
| 1410 win_T *wp; | |
| 1411 int down; /* when TRUE scroll down when not enough space */ | |
| 1412 { | |
| 1413 int n; | |
| 1414 | |
| 1415 if (wp->w_topfill > 0) | |
| 1416 { | |
| 1417 n = plines_win_nofill(wp, wp->w_topline, TRUE); | |
| 1418 if (wp->w_topfill + n > wp->w_height) | |
| 1419 { | |
| 1420 if (down && wp->w_topline > 1) | |
| 1421 { | |
| 1422 --wp->w_topline; | |
| 1423 wp->w_topfill = 0; | |
| 1424 } | |
| 1425 else | |
| 1426 { | |
| 1427 wp->w_topfill = wp->w_height - n; | |
| 1428 if (wp->w_topfill < 0) | |
| 1429 wp->w_topfill = 0; | |
| 1430 } | |
| 1431 } | |
| 1432 } | |
| 1433 } | |
| 1434 | |
| 1435 /* | |
| 1436 * Use as many filler lines as possible for w_topline. Make sure w_topline | |
| 1437 * is still visible. | |
| 1438 */ | |
| 1439 static void | |
| 1440 max_topfill() | |
| 1441 { | |
| 1442 int n; | |
| 1443 | |
| 1444 n = plines_nofill(curwin->w_topline); | |
| 1445 if (n >= curwin->w_height) | |
| 1446 curwin->w_topfill = 0; | |
| 1447 else | |
| 1448 { | |
| 1449 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 1450 if (curwin->w_topfill + n > curwin->w_height) | |
| 1451 curwin->w_topfill = curwin->w_height - n; | |
| 1452 } | |
| 1453 } | |
| 1454 #endif | |
| 1455 | |
| 1456 #if defined(FEAT_INS_EXPAND) || defined(PROTO) | |
| 1457 /* | |
| 1458 * Scroll the screen one line down, but don't do it if it would move the | |
| 1459 * cursor off the screen. | |
| 1460 */ | |
| 1461 void | |
| 1462 scrolldown_clamp() | |
| 1463 { | |
| 1464 int end_row; | |
| 1465 #ifdef FEAT_DIFF | |
| 1466 int can_fill = (curwin->w_topfill | |
| 1467 < diff_check_fill(curwin, curwin->w_topline)); | |
| 1468 #endif | |
| 1469 | |
| 1470 if (curwin->w_topline <= 1 | |
| 1471 #ifdef FEAT_DIFF | |
| 1472 && !can_fill | |
| 1473 #endif | |
| 1474 ) | |
| 1475 return; | |
| 1476 | |
| 1477 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1478 | |
| 1479 /* | |
| 1480 * Compute the row number of the last row of the cursor line | |
| 1481 * and make sure it doesn't go off the screen. Make sure the cursor | |
| 1482 * doesn't go past 'scrolloff' lines from the screen end. | |
| 1483 */ | |
| 1484 end_row = curwin->w_wrow; | |
| 1485 #ifdef FEAT_DIFF | |
| 1486 if (can_fill) | |
| 1487 ++end_row; | |
| 1488 else | |
| 1489 end_row += plines_nofill(curwin->w_topline - 1); | |
| 1490 #else | |
| 1491 end_row += plines(curwin->w_topline - 1); | |
| 1492 #endif | |
| 1493 if (curwin->w_p_wrap | |
| 1494 #ifdef FEAT_VERTSPLIT | |
| 1495 && curwin->w_width != 0 | |
| 1496 #endif | |
| 1497 ) | |
| 1498 { | |
| 1499 validate_cheight(); | |
| 1500 validate_virtcol(); | |
| 1501 end_row += curwin->w_cline_height - 1 - | |
| 1502 curwin->w_virtcol / W_WIDTH(curwin); | |
| 1503 } | |
| 1504 if (end_row < curwin->w_height - p_so) | |
| 1505 { | |
| 1506 #ifdef FEAT_DIFF | |
| 1507 if (can_fill) | |
| 1508 { | |
| 1509 ++curwin->w_topfill; | |
| 1510 check_topfill(curwin, TRUE); | |
| 1511 } | |
| 1512 else | |
| 1513 { | |
| 1514 --curwin->w_topline; | |
| 1515 curwin->w_topfill = 0; | |
| 1516 } | |
| 1517 #else | |
| 1518 --curwin->w_topline; | |
| 1519 #endif | |
| 1520 #ifdef FEAT_FOLDING | |
| 1521 hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 1522 #endif | |
| 1523 --curwin->w_botline; /* approximate w_botline */ | |
| 1524 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1525 } | |
| 1526 } | |
| 1527 | |
| 1528 /* | |
| 1529 * Scroll the screen one line up, but don't do it if it would move the cursor | |
| 1530 * off the screen. | |
| 1531 */ | |
| 1532 void | |
| 1533 scrollup_clamp() | |
| 1534 { | |
| 1535 int start_row; | |
| 1536 | |
| 1537 if (curwin->w_topline == curbuf->b_ml.ml_line_count | |
| 1538 #ifdef FEAT_DIFF | |
| 1539 && curwin->w_topfill == 0 | |
| 1540 #endif | |
| 1541 ) | |
| 1542 return; | |
| 1543 | |
| 1544 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1545 | |
| 1546 /* | |
| 1547 * Compute the row number of the first row of the cursor line | |
| 1548 * and make sure it doesn't go off the screen. Make sure the cursor | |
| 1549 * doesn't go before 'scrolloff' lines from the screen start. | |
| 1550 */ | |
| 1551 #ifdef FEAT_DIFF | |
| 1552 start_row = curwin->w_wrow - plines_nofill(curwin->w_topline) | |
| 1553 - curwin->w_topfill; | |
| 1554 #else | |
| 1555 start_row = curwin->w_wrow - plines(curwin->w_topline); | |
| 1556 #endif | |
| 1557 if (curwin->w_p_wrap | |
| 1558 #ifdef FEAT_VERTSPLIT | |
| 1559 && curwin->w_width != 0 | |
| 1560 #endif | |
| 1561 ) | |
| 1562 { | |
| 1563 validate_virtcol(); | |
| 1564 start_row -= curwin->w_virtcol / W_WIDTH(curwin); | |
| 1565 } | |
| 1566 if (start_row >= p_so) | |
| 1567 { | |
| 1568 #ifdef FEAT_DIFF | |
| 1569 if (curwin->w_topfill > 0) | |
| 1570 --curwin->w_topfill; | |
| 1571 else | |
| 1572 #endif | |
| 36 | 1573 { |
| 1574 #ifdef FEAT_FOLDING | |
| 1575 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
| 1576 #endif | |
| 7 | 1577 ++curwin->w_topline; |
| 36 | 1578 } |
| 7 | 1579 ++curwin->w_botline; /* approximate w_botline */ |
| 1580 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1581 } | |
| 1582 } | |
| 1583 #endif /* FEAT_INS_EXPAND */ | |
| 1584 | |
| 1585 /* | |
| 1586 * Add one line above "lp->lnum". This can be a filler line, a closed fold or | |
| 1587 * a (wrapped) text line. Uses and sets "lp->fill". | |
| 1588 * Returns the height of the added line in "lp->height". | |
|
2082
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
1589 * Lines above the first one are incredibly high: MAXCOL. |
| 7 | 1590 */ |
| 1591 static void | |
| 1592 topline_back(lp) | |
| 1593 lineoff_T *lp; | |
| 1594 { | |
| 1595 #ifdef FEAT_DIFF | |
| 1596 if (lp->fill < diff_check_fill(curwin, lp->lnum)) | |
| 1597 { | |
| 1598 /* Add a filler line. */ | |
| 1599 ++lp->fill; | |
| 1600 lp->height = 1; | |
| 1601 } | |
| 1602 else | |
| 1603 #endif | |
| 1604 { | |
| 1605 --lp->lnum; | |
| 1606 #ifdef FEAT_DIFF | |
| 1607 lp->fill = 0; | |
| 1608 #endif | |
| 1609 if (lp->lnum < 1) | |
| 1610 lp->height = MAXCOL; | |
| 1611 else | |
| 1612 #ifdef FEAT_FOLDING | |
| 1613 if (hasFolding(lp->lnum, &lp->lnum, NULL)) | |
| 1614 /* Add a closed fold */ | |
| 1615 lp->height = 1; | |
| 1616 else | |
| 1617 #endif | |
| 1618 { | |
| 1619 #ifdef FEAT_DIFF | |
| 1620 lp->height = plines_nofill(lp->lnum); | |
| 1621 #else | |
| 1622 lp->height = plines(lp->lnum); | |
| 1623 #endif | |
| 1624 } | |
| 1625 } | |
| 1626 } | |
| 1627 | |
| 1628 /* | |
| 1629 * Add one line below "lp->lnum". This can be a filler line, a closed fold or | |
| 1630 * a (wrapped) text line. Uses and sets "lp->fill". | |
| 1631 * Returns the height of the added line in "lp->height". | |
| 1632 * Lines below the last one are incredibly high. | |
| 1633 */ | |
| 1634 static void | |
| 1635 botline_forw(lp) | |
| 1636 lineoff_T *lp; | |
| 1637 { | |
| 1638 #ifdef FEAT_DIFF | |
| 1639 if (lp->fill < diff_check_fill(curwin, lp->lnum + 1)) | |
| 1640 { | |
| 1641 /* Add a filler line. */ | |
| 1642 ++lp->fill; | |
| 1643 lp->height = 1; | |
| 1644 } | |
| 1645 else | |
| 1646 #endif | |
| 1647 { | |
| 1648 ++lp->lnum; | |
| 1649 #ifdef FEAT_DIFF | |
| 1650 lp->fill = 0; | |
| 1651 #endif | |
| 1652 if (lp->lnum > curbuf->b_ml.ml_line_count) | |
| 1653 lp->height = MAXCOL; | |
| 1654 else | |
| 1655 #ifdef FEAT_FOLDING | |
| 1656 if (hasFolding(lp->lnum, NULL, &lp->lnum)) | |
| 1657 /* Add a closed fold */ | |
| 1658 lp->height = 1; | |
| 1659 else | |
| 1660 #endif | |
| 1661 { | |
| 1662 #ifdef FEAT_DIFF | |
| 1663 lp->height = plines_nofill(lp->lnum); | |
| 1664 #else | |
| 1665 lp->height = plines(lp->lnum); | |
| 1666 #endif | |
| 1667 } | |
| 1668 } | |
| 1669 } | |
| 1670 | |
| 1671 #ifdef FEAT_DIFF | |
| 1672 /* | |
| 1673 * Switch from including filler lines below lp->lnum to including filler | |
| 1674 * lines above loff.lnum + 1. This keeps pointing to the same line. | |
| 1675 * When there are no filler lines nothing changes. | |
| 1676 */ | |
| 1677 static void | |
| 1678 botline_topline(lp) | |
| 1679 lineoff_T *lp; | |
| 1680 { | |
| 1681 if (lp->fill > 0) | |
| 1682 { | |
| 1683 ++lp->lnum; | |
| 1684 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
| 1685 } | |
| 1686 } | |
| 1687 | |
| 1688 /* | |
| 1689 * Switch from including filler lines above lp->lnum to including filler | |
| 1690 * lines below loff.lnum - 1. This keeps pointing to the same line. | |
| 1691 * When there are no filler lines nothing changes. | |
| 1692 */ | |
| 1693 static void | |
| 1694 topline_botline(lp) | |
| 1695 lineoff_T *lp; | |
| 1696 { | |
| 1697 if (lp->fill > 0) | |
| 1698 { | |
| 1699 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
| 1700 --lp->lnum; | |
| 1701 } | |
| 1702 } | |
| 1703 #endif | |
| 1704 | |
| 1705 /* | |
| 1706 * Recompute topline to put the cursor at the top of the window. | |
| 1707 * Scroll at least "min_scroll" lines. | |
| 1708 * If "always" is TRUE, always set topline (for "zt"). | |
| 1709 */ | |
| 1710 void | |
| 1711 scroll_cursor_top(min_scroll, always) | |
| 1712 int min_scroll; | |
| 1713 int always; | |
| 1714 { | |
| 1715 int scrolled = 0; | |
| 1716 int extra = 0; | |
| 1717 int used; | |
| 1718 int i; | |
| 1719 linenr_T top; /* just above displayed lines */ | |
| 1720 linenr_T bot; /* just below displayed lines */ | |
| 1721 linenr_T old_topline = curwin->w_topline; | |
| 1722 #ifdef FEAT_DIFF | |
| 1723 linenr_T old_topfill = curwin->w_topfill; | |
| 1724 #endif | |
| 1725 linenr_T new_topline; | |
| 1726 int off = p_so; | |
| 1727 | |
| 1728 #ifdef FEAT_MOUSE | |
| 1729 if (mouse_dragging > 0) | |
| 1730 off = mouse_dragging - 1; | |
| 1731 #endif | |
| 1732 | |
| 1733 /* | |
| 1734 * Decrease topline until: | |
| 1735 * - it has become 1 | |
| 1736 * - (part of) the cursor line is moved off the screen or | |
| 1737 * - moved at least 'scrolljump' lines and | |
| 1738 * - at least 'scrolloff' lines above and below the cursor | |
| 1739 */ | |
| 1740 validate_cheight(); | |
| 1741 used = curwin->w_cline_height; | |
| 1742 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 1743 scrolled = used; | |
| 1744 | |
| 1745 #ifdef FEAT_FOLDING | |
| 1746 if (hasFolding(curwin->w_cursor.lnum, &top, &bot)) | |
| 1747 { | |
| 1748 --top; | |
| 1749 ++bot; | |
| 1750 } | |
| 1751 else | |
| 1752 #endif | |
| 1753 { | |
| 1754 top = curwin->w_cursor.lnum - 1; | |
| 1755 bot = curwin->w_cursor.lnum + 1; | |
| 1756 } | |
| 1757 new_topline = top + 1; | |
| 1758 | |
| 1759 #ifdef FEAT_DIFF | |
| 1760 /* count filler lines of the cursor window as context */ | |
| 1761 i = diff_check_fill(curwin, curwin->w_cursor.lnum); | |
| 1762 used += i; | |
| 1763 extra += i; | |
| 1764 #endif | |
| 1765 | |
| 1766 /* | |
| 1767 * Check if the lines from "top" to "bot" fit in the window. If they do, | |
| 1768 * set new_topline and advance "top" and "bot" to include more lines. | |
| 1769 */ | |
| 1770 while (top > 0) | |
| 1771 { | |
| 1772 #ifdef FEAT_FOLDING | |
| 1773 if (hasFolding(top, &top, NULL)) | |
| 1774 /* count one logical line for a sequence of folded lines */ | |
| 1775 i = 1; | |
| 1776 else | |
| 1777 #endif | |
| 1778 i = plines(top); | |
| 1779 used += i; | |
| 1780 if (extra + i <= off && bot < curbuf->b_ml.ml_line_count) | |
| 1781 { | |
| 1782 #ifdef FEAT_FOLDING | |
| 1783 if (hasFolding(bot, NULL, &bot)) | |
| 1784 /* count one logical line for a sequence of folded lines */ | |
| 1785 ++used; | |
| 1786 else | |
| 1787 #endif | |
| 1788 used += plines(bot); | |
| 1789 } | |
| 1790 if (used > curwin->w_height) | |
| 1791 break; | |
| 1792 if (top < curwin->w_topline) | |
| 1793 scrolled += i; | |
| 1794 | |
| 1795 /* | |
| 1796 * If scrolling is needed, scroll at least 'sj' lines. | |
| 1797 */ | |
| 1798 if ((new_topline >= curwin->w_topline || scrolled > min_scroll) | |
| 1799 && extra >= off) | |
| 1800 break; | |
| 1801 | |
| 1802 extra += i; | |
| 1803 new_topline = top; | |
| 1804 --top; | |
| 1805 ++bot; | |
| 1806 } | |
| 1807 | |
| 1808 /* | |
| 1809 * If we don't have enough space, put cursor in the middle. | |
| 1810 * This makes sure we get the same position when using "k" and "j" | |
| 1811 * in a small window. | |
| 1812 */ | |
| 1813 if (used > curwin->w_height) | |
| 1814 scroll_cursor_halfway(FALSE); | |
| 1815 else | |
| 1816 { | |
| 1817 /* | |
| 1818 * If "always" is FALSE, only adjust topline to a lower value, higher | |
| 1819 * value may happen with wrapping lines | |
| 1820 */ | |
| 1821 if (new_topline < curwin->w_topline || always) | |
| 1822 curwin->w_topline = new_topline; | |
| 1823 if (curwin->w_topline > curwin->w_cursor.lnum) | |
| 1824 curwin->w_topline = curwin->w_cursor.lnum; | |
| 1825 #ifdef FEAT_DIFF | |
| 1826 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 1827 if (curwin->w_topfill > 0 && extra > off) | |
| 1828 { | |
| 1829 curwin->w_topfill -= extra - off; | |
| 1830 if (curwin->w_topfill < 0) | |
| 1831 curwin->w_topfill = 0; | |
| 1832 } | |
| 1833 check_topfill(curwin, FALSE); | |
| 1834 #endif | |
| 1835 if (curwin->w_topline != old_topline | |
| 1836 #ifdef FEAT_DIFF | |
| 1837 || curwin->w_topfill != old_topfill | |
| 1838 #endif | |
| 1839 ) | |
| 1840 curwin->w_valid &= | |
| 1841 ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 1842 curwin->w_valid |= VALID_TOPLINE; | |
| 1843 } | |
| 1844 } | |
| 1845 | |
| 1846 /* | |
| 1847 * Set w_empty_rows and w_filler_rows for window "wp", having used up "used" | |
| 1848 * screen lines for text lines. | |
| 1849 */ | |
| 1850 void | |
| 1851 set_empty_rows(wp, used) | |
| 1852 win_T *wp; | |
| 1853 int used; | |
| 1854 { | |
| 1855 #ifdef FEAT_DIFF | |
| 1856 wp->w_filler_rows = 0; | |
| 1857 #endif | |
| 1858 if (used == 0) | |
| 1859 wp->w_empty_rows = 0; /* single line that doesn't fit */ | |
| 1860 else | |
| 1861 { | |
| 1862 wp->w_empty_rows = wp->w_height - used; | |
| 1863 #ifdef FEAT_DIFF | |
| 1864 if (wp->w_botline <= wp->w_buffer->b_ml.ml_line_count) | |
| 1865 { | |
| 1866 wp->w_filler_rows = diff_check_fill(wp, wp->w_botline); | |
| 1867 if (wp->w_empty_rows > wp->w_filler_rows) | |
| 1868 wp->w_empty_rows -= wp->w_filler_rows; | |
| 1869 else | |
| 1870 { | |
| 1871 wp->w_filler_rows = wp->w_empty_rows; | |
| 1872 wp->w_empty_rows = 0; | |
| 1873 } | |
| 1874 } | |
| 1875 #endif | |
| 1876 } | |
| 1877 } | |
| 1878 | |
| 1879 /* | |
| 1880 * Recompute topline to put the cursor at the bottom of the window. | |
| 1881 * Scroll at least "min_scroll" lines. | |
| 1882 * If "set_topbot" is TRUE, set topline and botline first (for "zb"). | |
| 1883 * This is messy stuff!!! | |
| 1884 */ | |
| 1885 void | |
| 1886 scroll_cursor_bot(min_scroll, set_topbot) | |
| 1887 int min_scroll; | |
| 1888 int set_topbot; | |
| 1889 { | |
| 1890 int used; | |
| 1891 int scrolled = 0; | |
| 1892 int extra = 0; | |
| 1893 int i; | |
| 1894 linenr_T line_count; | |
| 1895 linenr_T old_topline = curwin->w_topline; | |
| 1896 lineoff_T loff; | |
| 1897 lineoff_T boff; | |
| 1898 #ifdef FEAT_DIFF | |
| 1899 int old_topfill = curwin->w_topfill; | |
| 1900 int fill_below_window; | |
| 1901 #endif | |
| 1902 linenr_T old_botline = curwin->w_botline; | |
| 1903 linenr_T old_valid = curwin->w_valid; | |
| 1904 int old_empty_rows = curwin->w_empty_rows; | |
| 1905 linenr_T cln; /* Cursor Line Number */ | |
| 1906 | |
| 1907 cln = curwin->w_cursor.lnum; | |
| 1908 if (set_topbot) | |
| 1909 { | |
| 1910 used = 0; | |
| 1911 curwin->w_botline = cln + 1; | |
| 1912 #ifdef FEAT_DIFF | |
| 1913 loff.fill = 0; | |
| 1914 #endif | |
| 1915 for (curwin->w_topline = curwin->w_botline; | |
| 1916 curwin->w_topline > 1; | |
| 1917 curwin->w_topline = loff.lnum) | |
| 1918 { | |
| 1919 loff.lnum = curwin->w_topline; | |
| 1920 topline_back(&loff); | |
|
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1921 if (loff.height == MAXCOL || used + loff.height > curwin->w_height) |
| 7 | 1922 break; |
| 1923 used += loff.height; | |
| 1924 #ifdef FEAT_DIFF | |
| 1925 curwin->w_topfill = loff.fill; | |
| 1926 #endif | |
| 1927 } | |
| 1928 set_empty_rows(curwin, used); | |
| 1929 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 1930 if (curwin->w_topline != old_topline | |
| 1931 #ifdef FEAT_DIFF | |
| 1932 || curwin->w_topfill != old_topfill | |
| 1933 #endif | |
| 1934 ) | |
| 1935 curwin->w_valid &= ~(VALID_WROW|VALID_CROW); | |
| 1936 } | |
| 1937 else | |
| 1938 validate_botline(); | |
| 1939 | |
| 1940 /* The lines of the cursor line itself are always used. */ | |
| 1941 #ifdef FEAT_DIFF | |
| 1942 used = plines_nofill(cln); | |
| 1943 #else | |
| 1944 validate_cheight(); | |
| 1945 used = curwin->w_cline_height; | |
| 1946 #endif | |
| 1947 | |
| 1948 /* If the cursor is below botline, we will at least scroll by the height | |
| 1949 * of the cursor line. Correct for empty lines, which are really part of | |
| 1950 * botline. */ | |
| 1951 if (cln >= curwin->w_botline) | |
| 1952 { | |
| 1953 scrolled = used; | |
| 1954 if (cln == curwin->w_botline) | |
| 1955 scrolled -= curwin->w_empty_rows; | |
| 1956 } | |
| 1957 | |
| 1958 /* | |
| 1959 * Stop counting lines to scroll when | |
| 1960 * - hitting start of the file | |
| 1961 * - scrolled nothing or at least 'sj' lines | |
| 1962 * - at least 'so' lines below the cursor | |
| 1963 * - lines between botline and cursor have been counted | |
| 1964 */ | |
| 1965 #ifdef FEAT_FOLDING | |
| 1966 if (!hasFolding(curwin->w_cursor.lnum, &loff.lnum, &boff.lnum)) | |
| 1967 #endif | |
| 1968 { | |
| 1969 loff.lnum = cln; | |
| 1970 boff.lnum = cln; | |
| 1971 } | |
| 1972 #ifdef FEAT_DIFF | |
| 1973 loff.fill = 0; | |
| 1974 boff.fill = 0; | |
| 1975 fill_below_window = diff_check_fill(curwin, curwin->w_botline) | |
| 1976 - curwin->w_filler_rows; | |
| 1977 #endif | |
| 1978 | |
| 1979 while (loff.lnum > 1) | |
| 1980 { | |
| 1981 /* Stop when scrolled nothing or at least "min_scroll", found "extra" | |
| 1982 * context for 'scrolloff' and counted all lines below the window. */ | |
| 1983 if ((((scrolled <= 0 || scrolled >= min_scroll) | |
| 1984 && extra >= ( | |
| 1985 #ifdef FEAT_MOUSE | |
| 1121 | 1986 mouse_dragging > 0 ? mouse_dragging - 1 : |
| 7 | 1987 #endif |
| 1988 p_so)) | |
| 1989 || boff.lnum + 1 > curbuf->b_ml.ml_line_count) | |
| 1990 && loff.lnum <= curwin->w_botline | |
| 1991 #ifdef FEAT_DIFF | |
| 1992 && (loff.lnum < curwin->w_botline | |
| 1993 || loff.fill >= fill_below_window) | |
| 1994 #endif | |
| 1995 ) | |
| 1996 break; | |
| 1997 | |
| 1998 /* Add one line above */ | |
| 1999 topline_back(&loff); | |
|
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2000 if (loff.height == MAXCOL) |
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2001 used = MAXCOL; |
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2002 else |
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2003 used += loff.height; |
| 7 | 2004 if (used > curwin->w_height) |
| 2005 break; | |
| 2006 if (loff.lnum >= curwin->w_botline | |
| 2007 #ifdef FEAT_DIFF | |
| 2008 && (loff.lnum > curwin->w_botline | |
| 2009 || loff.fill <= fill_below_window) | |
| 2010 #endif | |
| 2011 ) | |
| 2012 { | |
| 2013 /* Count screen lines that are below the window. */ | |
| 2014 scrolled += loff.height; | |
| 2015 if (loff.lnum == curwin->w_botline | |
| 2016 #ifdef FEAT_DIFF | |
| 2017 && boff.fill == 0 | |
| 2018 #endif | |
| 2019 ) | |
| 2020 scrolled -= curwin->w_empty_rows; | |
| 2021 } | |
| 2022 | |
| 2023 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
| 2024 { | |
| 2025 /* Add one line below */ | |
| 2026 botline_forw(&boff); | |
| 2027 used += boff.height; | |
| 2028 if (used > curwin->w_height) | |
| 2029 break; | |
| 2030 if (extra < ( | |
| 2031 #ifdef FEAT_MOUSE | |
| 2032 mouse_dragging > 0 ? mouse_dragging - 1 : | |
| 2033 #endif | |
| 2034 p_so) || scrolled < min_scroll) | |
| 2035 { | |
| 2036 extra += boff.height; | |
| 2037 if (boff.lnum >= curwin->w_botline | |
| 2038 #ifdef FEAT_DIFF | |
| 2039 || (boff.lnum + 1 == curwin->w_botline | |
| 2040 && boff.fill > curwin->w_filler_rows) | |
| 2041 #endif | |
| 2042 ) | |
| 2043 { | |
| 2044 /* Count screen lines that are below the window. */ | |
| 2045 scrolled += boff.height; | |
| 2046 if (boff.lnum == curwin->w_botline | |
| 2047 #ifdef FEAT_DIFF | |
| 2048 && boff.fill == 0 | |
| 2049 #endif | |
| 2050 ) | |
| 2051 scrolled -= curwin->w_empty_rows; | |
| 2052 } | |
| 2053 } | |
| 2054 } | |
| 2055 } | |
| 2056 | |
| 2057 /* curwin->w_empty_rows is larger, no need to scroll */ | |
| 2058 if (scrolled <= 0) | |
| 2059 line_count = 0; | |
| 2060 /* more than a screenfull, don't scroll but redraw */ | |
| 2061 else if (used > curwin->w_height) | |
| 2062 line_count = used; | |
| 2063 /* scroll minimal number of lines */ | |
| 2064 else | |
| 2065 { | |
| 2066 line_count = 0; | |
| 2067 #ifdef FEAT_DIFF | |
| 2068 boff.fill = curwin->w_topfill; | |
| 2069 #endif | |
| 2070 boff.lnum = curwin->w_topline - 1; | |
| 2071 for (i = 0; i < scrolled && boff.lnum < curwin->w_botline; ) | |
| 2072 { | |
| 2073 botline_forw(&boff); | |
| 2074 i += boff.height; | |
| 2075 ++line_count; | |
| 2076 } | |
| 2077 if (i < scrolled) /* below curwin->w_botline, don't scroll */ | |
| 2078 line_count = 9999; | |
| 2079 } | |
| 2080 | |
| 2081 /* | |
| 2082 * Scroll up if the cursor is off the bottom of the screen a bit. | |
| 2083 * Otherwise put it at 1/2 of the screen. | |
| 2084 */ | |
| 2085 if (line_count >= curwin->w_height && line_count > min_scroll) | |
| 2086 scroll_cursor_halfway(FALSE); | |
| 2087 else | |
| 2088 scrollup(line_count, TRUE); | |
| 2089 | |
| 2090 /* | |
| 2091 * If topline didn't change we need to restore w_botline and w_empty_rows | |
| 2092 * (we changed them). | |
| 2093 * If topline did change, update_screen() will set botline. | |
| 2094 */ | |
| 2095 if (curwin->w_topline == old_topline && set_topbot) | |
| 2096 { | |
| 2097 curwin->w_botline = old_botline; | |
| 2098 curwin->w_empty_rows = old_empty_rows; | |
| 2099 curwin->w_valid = old_valid; | |
| 2100 } | |
| 2101 curwin->w_valid |= VALID_TOPLINE; | |
| 2102 } | |
| 2103 | |
| 2104 /* | |
| 2105 * Recompute topline to put the cursor halfway the window | |
| 2106 * If "atend" is TRUE, also put it halfway at the end of the file. | |
| 2107 */ | |
| 2108 void | |
| 2109 scroll_cursor_halfway(atend) | |
| 2110 int atend; | |
| 2111 { | |
| 2112 int above = 0; | |
| 2113 linenr_T topline; | |
| 2114 #ifdef FEAT_DIFF | |
| 2115 int topfill = 0; | |
| 2116 #endif | |
| 2117 int below = 0; | |
| 2118 int used; | |
| 2119 lineoff_T loff; | |
| 2120 lineoff_T boff; | |
| 5661 | 2121 #ifdef FEAT_DIFF |
| 5653 | 2122 linenr_T old_topline = curwin->w_topline; |
| 5661 | 2123 #endif |
| 7 | 2124 |
| 2125 loff.lnum = boff.lnum = curwin->w_cursor.lnum; | |
| 2126 #ifdef FEAT_FOLDING | |
| 2127 (void)hasFolding(loff.lnum, &loff.lnum, &boff.lnum); | |
| 2128 #endif | |
| 2129 #ifdef FEAT_DIFF | |
| 2130 used = plines_nofill(loff.lnum); | |
| 2131 loff.fill = 0; | |
| 2132 boff.fill = 0; | |
| 2133 #else | |
| 2134 used = plines(loff.lnum); | |
| 2135 #endif | |
| 2136 topline = loff.lnum; | |
| 2137 while (topline > 1) | |
| 2138 { | |
| 2139 if (below <= above) /* add a line below the cursor first */ | |
| 2140 { | |
| 2141 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
| 2142 { | |
| 2143 botline_forw(&boff); | |
| 2144 used += boff.height; | |
| 2145 if (used > curwin->w_height) | |
| 2146 break; | |
| 2147 below += boff.height; | |
| 2148 } | |
| 2149 else | |
| 2150 { | |
| 2151 ++below; /* count a "~" line */ | |
| 2152 if (atend) | |
| 2153 ++used; | |
| 2154 } | |
| 2155 } | |
| 2156 | |
| 2157 if (below > above) /* add a line above the cursor */ | |
| 2158 { | |
| 2159 topline_back(&loff); | |
|
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2160 if (loff.height == MAXCOL) |
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2161 used = MAXCOL; |
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2162 else |
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2163 used += loff.height; |
| 7 | 2164 if (used > curwin->w_height) |
| 2165 break; | |
| 2166 above += loff.height; | |
| 2167 topline = loff.lnum; | |
| 2168 #ifdef FEAT_DIFF | |
| 2169 topfill = loff.fill; | |
| 2170 #endif | |
| 2171 } | |
| 2172 } | |
| 2173 #ifdef FEAT_FOLDING | |
| 2174 if (!hasFolding(topline, &curwin->w_topline, NULL)) | |
| 2175 #endif | |
| 2176 curwin->w_topline = topline; | |
| 2177 #ifdef FEAT_DIFF | |
| 2178 curwin->w_topfill = topfill; | |
| 5653 | 2179 if (old_topline > curwin->w_topline + curwin->w_height) |
| 2180 curwin->w_botfill = FALSE; | |
| 7 | 2181 check_topfill(curwin, FALSE); |
| 2182 #endif | |
| 2183 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2184 curwin->w_valid |= VALID_TOPLINE; | |
| 2185 } | |
| 2186 | |
| 2187 /* | |
| 2188 * Correct the cursor position so that it is in a part of the screen at least | |
| 2189 * 'so' lines from the top and bottom, if possible. | |
| 2190 * If not possible, put it at the same position as scroll_cursor_halfway(). | |
| 2191 * When called topline must be valid! | |
| 2192 */ | |
| 2193 void | |
| 2194 cursor_correct() | |
| 2195 { | |
| 2196 int above = 0; /* screen lines above topline */ | |
| 2197 linenr_T topline; | |
| 2198 int below = 0; /* screen lines below botline */ | |
| 2199 linenr_T botline; | |
| 2200 int above_wanted, below_wanted; | |
| 2201 linenr_T cln; /* Cursor Line Number */ | |
| 2202 int max_off; | |
| 2203 | |
| 2204 /* | |
| 2205 * How many lines we would like to have above/below the cursor depends on | |
| 2206 * whether the first/last line of the file is on screen. | |
| 2207 */ | |
| 2208 above_wanted = p_so; | |
| 2209 below_wanted = p_so; | |
| 2210 #ifdef FEAT_MOUSE | |
| 1121 | 2211 if (mouse_dragging > 0) |
| 7 | 2212 { |
| 2213 above_wanted = mouse_dragging - 1; | |
| 2214 below_wanted = mouse_dragging - 1; | |
| 2215 } | |
| 2216 #endif | |
| 2217 if (curwin->w_topline == 1) | |
| 2218 { | |
| 2219 above_wanted = 0; | |
| 2220 max_off = curwin->w_height / 2; | |
| 2221 if (below_wanted > max_off) | |
| 2222 below_wanted = max_off; | |
| 2223 } | |
| 2224 validate_botline(); | |
| 2225 if (curwin->w_botline == curbuf->b_ml.ml_line_count + 1 | |
| 2226 #ifdef FEAT_MOUSE | |
| 1121 | 2227 && mouse_dragging == 0 |
| 7 | 2228 #endif |
| 2229 ) | |
| 2230 { | |
| 2231 below_wanted = 0; | |
| 2232 max_off = (curwin->w_height - 1) / 2; | |
| 2233 if (above_wanted > max_off) | |
| 2234 above_wanted = max_off; | |
| 2235 } | |
| 2236 | |
| 2237 /* | |
| 2238 * If there are sufficient file-lines above and below the cursor, we can | |
| 2239 * return now. | |
| 2240 */ | |
| 2241 cln = curwin->w_cursor.lnum; | |
| 2242 if (cln >= curwin->w_topline + above_wanted | |
| 2243 && cln < curwin->w_botline - below_wanted | |
| 2244 #ifdef FEAT_FOLDING | |
| 2245 && !hasAnyFolding(curwin) | |
| 2246 #endif | |
| 2247 ) | |
| 2248 return; | |
| 2249 | |
| 2250 /* | |
| 2251 * Narrow down the area where the cursor can be put by taking lines from | |
| 2252 * the top and the bottom until: | |
| 2253 * - the desired context lines are found | |
| 2254 * - the lines from the top is past the lines from the bottom | |
| 2255 */ | |
| 2256 topline = curwin->w_topline; | |
| 2257 botline = curwin->w_botline - 1; | |
| 2258 #ifdef FEAT_DIFF | |
| 2259 /* count filler lines as context */ | |
| 2260 above = curwin->w_topfill; | |
| 2261 below = curwin->w_filler_rows; | |
| 2262 #endif | |
| 2263 while ((above < above_wanted || below < below_wanted) && topline < botline) | |
| 2264 { | |
| 2265 if (below < below_wanted && (below <= above || above >= above_wanted)) | |
| 2266 { | |
| 2267 #ifdef FEAT_FOLDING | |
| 2268 if (hasFolding(botline, &botline, NULL)) | |
| 2269 ++below; | |
| 2270 else | |
| 2271 #endif | |
| 2272 below += plines(botline); | |
| 2273 --botline; | |
| 2274 } | |
| 2275 if (above < above_wanted && (above < below || below >= below_wanted)) | |
| 2276 { | |
| 2277 #ifdef FEAT_FOLDING | |
| 2278 if (hasFolding(topline, NULL, &topline)) | |
| 2279 ++above; | |
| 2280 else | |
| 2281 #endif | |
| 2282 #ifndef FEAT_DIFF | |
| 2283 above += plines(topline); | |
| 2284 #else | |
| 2285 above += plines_nofill(topline); | |
| 2286 | |
| 2287 /* Count filler lines below this line as context. */ | |
| 2288 if (topline < botline) | |
| 2289 above += diff_check_fill(curwin, topline + 1); | |
| 2290 #endif | |
| 2291 ++topline; | |
| 2292 } | |
| 2293 } | |
| 2294 if (topline == botline || botline == 0) | |
| 2295 curwin->w_cursor.lnum = topline; | |
| 2296 else if (topline > botline) | |
| 2297 curwin->w_cursor.lnum = botline; | |
| 2298 else | |
| 2299 { | |
| 2300 if (cln < topline && curwin->w_topline > 1) | |
| 2301 { | |
| 2302 curwin->w_cursor.lnum = topline; | |
| 2303 curwin->w_valid &= | |
| 2304 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
| 2305 } | |
| 2306 if (cln > botline && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 2307 { | |
| 2308 curwin->w_cursor.lnum = botline; | |
| 2309 curwin->w_valid &= | |
| 2310 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
| 2311 } | |
| 2312 } | |
| 2313 curwin->w_valid |= VALID_TOPLINE; | |
| 2314 } | |
| 2315 | |
| 2316 static void get_scroll_overlap __ARGS((lineoff_T *lp, int dir)); | |
| 2317 | |
| 2318 /* | |
| 2319 * move screen 'count' pages up or down and update screen | |
| 2320 * | |
| 2321 * return FAIL for failure, OK otherwise | |
| 2322 */ | |
| 2323 int | |
| 2324 onepage(dir, count) | |
| 2325 int dir; | |
| 2326 long count; | |
| 2327 { | |
| 2328 long n; | |
| 2329 int retval = OK; | |
| 2330 lineoff_T loff; | |
| 2331 linenr_T old_topline = curwin->w_topline; | |
| 2332 | |
| 2333 if (curbuf->b_ml.ml_line_count == 1) /* nothing to do */ | |
| 2334 { | |
| 2335 beep_flush(); | |
| 2336 return FAIL; | |
| 2337 } | |
| 2338 | |
| 2339 for ( ; count > 0; --count) | |
| 2340 { | |
| 2341 validate_botline(); | |
| 2342 /* | |
| 2343 * It's an error to move a page up when the first line is already on | |
| 2344 * the screen. It's an error to move a page down when the last line | |
| 2345 * is on the screen and the topline is 'scrolloff' lines from the | |
| 2346 * last line. | |
| 2347 */ | |
| 2348 if (dir == FORWARD | |
| 2349 ? ((curwin->w_topline >= curbuf->b_ml.ml_line_count - p_so) | |
| 2350 && curwin->w_botline > curbuf->b_ml.ml_line_count) | |
| 2351 : (curwin->w_topline == 1 | |
| 2352 #ifdef FEAT_DIFF | |
| 2353 && curwin->w_topfill == | |
| 2354 diff_check_fill(curwin, curwin->w_topline) | |
| 2355 #endif | |
| 2356 )) | |
| 2357 { | |
| 2358 beep_flush(); | |
| 2359 retval = FAIL; | |
| 2360 break; | |
| 2361 } | |
| 2362 | |
| 2363 #ifdef FEAT_DIFF | |
| 2364 loff.fill = 0; | |
| 2365 #endif | |
| 2366 if (dir == FORWARD) | |
| 2367 { | |
| 164 | 2368 if (firstwin == lastwin && p_window > 0 && p_window < Rows - 1) |
| 7 | 2369 { |
| 164 | 2370 /* Vi compatible scrolling */ |
| 2371 if (p_window <= 2) | |
| 2372 ++curwin->w_topline; | |
| 2373 else | |
| 2374 curwin->w_topline += p_window - 2; | |
| 2375 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
| 2376 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
| 2377 curwin->w_cursor.lnum = curwin->w_topline; | |
| 2378 } | |
| 2379 else if (curwin->w_botline > curbuf->b_ml.ml_line_count) | |
| 2380 { | |
| 2381 /* at end of file */ | |
| 7 | 2382 curwin->w_topline = curbuf->b_ml.ml_line_count; |
| 2383 #ifdef FEAT_DIFF | |
| 2384 curwin->w_topfill = 0; | |
| 2385 #endif | |
| 2386 curwin->w_valid &= ~(VALID_WROW|VALID_CROW); | |
| 2387 } | |
| 2388 else | |
| 2389 { | |
| 2390 /* For the overlap, start with the line just below the window | |
| 2391 * and go upwards. */ | |
| 2392 loff.lnum = curwin->w_botline; | |
| 2393 #ifdef FEAT_DIFF | |
| 2394 loff.fill = diff_check_fill(curwin, loff.lnum) | |
| 2395 - curwin->w_filler_rows; | |
| 2396 #endif | |
| 2397 get_scroll_overlap(&loff, -1); | |
| 2398 curwin->w_topline = loff.lnum; | |
| 2399 #ifdef FEAT_DIFF | |
| 2400 curwin->w_topfill = loff.fill; | |
| 2401 check_topfill(curwin, FALSE); | |
| 2402 #endif | |
| 2403 curwin->w_cursor.lnum = curwin->w_topline; | |
| 2404 curwin->w_valid &= ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW| | |
| 2405 VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2406 } | |
| 2407 } | |
| 2408 else /* dir == BACKWARDS */ | |
| 2409 { | |
| 2410 #ifdef FEAT_DIFF | |
| 2411 if (curwin->w_topline == 1) | |
| 2412 { | |
| 2413 /* Include max number of filler lines */ | |
| 2414 max_topfill(); | |
| 2415 continue; | |
| 2416 } | |
| 2417 #endif | |
| 164 | 2418 if (firstwin == lastwin && p_window > 0 && p_window < Rows - 1) |
| 2419 { | |
| 2420 /* Vi compatible scrolling (sort of) */ | |
| 2421 if (p_window <= 2) | |
| 2422 --curwin->w_topline; | |
| 2423 else | |
| 2424 curwin->w_topline -= p_window - 2; | |
| 2425 if (curwin->w_topline < 1) | |
| 2426 curwin->w_topline = 1; | |
| 2427 curwin->w_cursor.lnum = curwin->w_topline + p_window - 1; | |
| 2428 if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count) | |
| 2429 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; | |
| 2430 continue; | |
| 2431 } | |
| 2432 | |
| 7 | 2433 /* Find the line at the top of the window that is going to be the |
| 2434 * line at the bottom of the window. Make sure this results in | |
| 2435 * the same line as before doing CTRL-F. */ | |
| 2436 loff.lnum = curwin->w_topline - 1; | |
| 2437 #ifdef FEAT_DIFF | |
| 2438 loff.fill = diff_check_fill(curwin, loff.lnum + 1) | |
| 2439 - curwin->w_topfill; | |
| 2440 #endif | |
| 2441 get_scroll_overlap(&loff, 1); | |
| 2442 | |
| 2443 if (loff.lnum >= curbuf->b_ml.ml_line_count) | |
| 2444 { | |
| 2445 loff.lnum = curbuf->b_ml.ml_line_count; | |
| 2446 #ifdef FEAT_DIFF | |
| 2447 loff.fill = 0; | |
| 2448 } | |
| 2449 else | |
| 2450 { | |
| 2451 botline_topline(&loff); | |
| 2452 #endif | |
| 2453 } | |
| 2454 curwin->w_cursor.lnum = loff.lnum; | |
| 2455 | |
| 2456 /* Find the line just above the new topline to get the right line | |
| 2457 * at the bottom of the window. */ | |
| 2458 n = 0; | |
| 2459 while (n <= curwin->w_height && loff.lnum >= 1) | |
| 2460 { | |
| 2461 topline_back(&loff); | |
|
2082
8ca3c9ad0bee
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parents:
2070
diff
changeset
|
2462 if (loff.height == MAXCOL) |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2463 n = MAXCOL; |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2464 else |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2465 n += loff.height; |
| 7 | 2466 } |
|
2082
8ca3c9ad0bee
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parents:
2070
diff
changeset
|
2467 if (loff.lnum < 1) /* at begin of file */ |
| 7 | 2468 { |
| 2469 curwin->w_topline = 1; | |
| 2470 #ifdef FEAT_DIFF | |
| 2471 max_topfill(); | |
| 2472 #endif | |
| 2473 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 2474 } | |
| 2475 else | |
| 2476 { | |
| 2477 /* Go two lines forward again. */ | |
| 2478 #ifdef FEAT_DIFF | |
| 2479 topline_botline(&loff); | |
| 2480 #endif | |
| 2481 botline_forw(&loff); | |
| 2482 botline_forw(&loff); | |
| 2483 #ifdef FEAT_DIFF | |
| 2484 botline_topline(&loff); | |
| 2485 #endif | |
| 2486 #ifdef FEAT_FOLDING | |
| 2487 /* We're at the wrong end of a fold now. */ | |
| 2488 (void)hasFolding(loff.lnum, &loff.lnum, NULL); | |
| 2489 #endif | |
| 2490 | |
| 2491 /* Always scroll at least one line. Avoid getting stuck on | |
| 2492 * very long lines. */ | |
| 2493 if (loff.lnum >= curwin->w_topline | |
| 2494 #ifdef FEAT_DIFF | |
| 2495 && (loff.lnum > curwin->w_topline | |
| 2496 || loff.fill >= curwin->w_topfill) | |
| 2497 #endif | |
| 2498 ) | |
| 2499 { | |
| 2500 #ifdef FEAT_DIFF | |
| 2501 /* First try using the maximum number of filler lines. If | |
| 2502 * that's not enough, backup one line. */ | |
| 2503 loff.fill = curwin->w_topfill; | |
| 2504 if (curwin->w_topfill < diff_check_fill(curwin, | |
| 2505 curwin->w_topline)) | |
| 2506 max_topfill(); | |
| 2507 if (curwin->w_topfill == loff.fill) | |
| 2508 #endif | |
| 2509 { | |
| 2510 --curwin->w_topline; | |
| 2511 #ifdef FEAT_DIFF | |
| 2512 curwin->w_topfill = 0; | |
| 2513 #endif | |
| 2514 } | |
| 2515 comp_botline(curwin); | |
| 2516 curwin->w_cursor.lnum = curwin->w_botline - 1; | |
| 5764 | 2517 curwin->w_valid &= |
| 2518 ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW|VALID_CROW); | |
| 7 | 2519 } |
| 2520 else | |
| 2521 { | |
| 2522 curwin->w_topline = loff.lnum; | |
| 2523 #ifdef FEAT_DIFF | |
| 2524 curwin->w_topfill = loff.fill; | |
| 2525 check_topfill(curwin, FALSE); | |
| 2526 #endif | |
| 2527 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 2528 } | |
| 2529 } | |
| 2530 } | |
| 2531 } | |
| 2532 #ifdef FEAT_FOLDING | |
| 2533 foldAdjustCursor(); | |
| 2534 #endif | |
| 2535 cursor_correct(); | |
| 161 | 2536 if (retval == OK) |
| 2537 beginline(BL_SOL | BL_FIX); | |
| 7 | 2538 curwin->w_valid &= ~(VALID_WCOL|VALID_WROW|VALID_VIRTCOL); |
| 2539 | |
| 2540 /* | |
| 2541 * Avoid the screen jumping up and down when 'scrolloff' is non-zero. | |
| 2542 * But make sure we scroll at least one line (happens with mix of long | |
| 2543 * wrapping lines and non-wrapping line). | |
| 2544 */ | |
| 2545 if (retval == OK && dir == FORWARD && check_top_offset()) | |
| 2546 { | |
| 2547 scroll_cursor_top(1, FALSE); | |
| 2548 if (curwin->w_topline <= old_topline | |
| 2549 && old_topline < curbuf->b_ml.ml_line_count) | |
| 2550 { | |
| 2551 curwin->w_topline = old_topline + 1; | |
| 2552 #ifdef FEAT_FOLDING | |
| 2553 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 2554 #endif | |
| 2555 } | |
| 2556 } | |
| 2557 | |
| 2558 redraw_later(VALID); | |
| 2559 return retval; | |
| 2560 } | |
| 2561 | |
| 2562 /* | |
| 2563 * Decide how much overlap to use for page-up or page-down scrolling. | |
| 2564 * This is symmetric, so that doing both keeps the same lines displayed. | |
| 2565 * Three lines are examined: | |
| 2566 * | |
| 2567 * before CTRL-F after CTRL-F / before CTRL-B | |
| 2568 * etc. l1 | |
| 2569 * l1 last but one line ------------ | |
| 2570 * l2 last text line l2 top text line | |
| 2571 * ------------- l3 second text line | |
| 2572 * l3 etc. | |
| 2573 */ | |
| 2574 static void | |
| 2575 get_scroll_overlap(lp, dir) | |
| 2576 lineoff_T *lp; | |
| 2577 int dir; | |
| 2578 { | |
| 2579 int h1, h2, h3, h4; | |
| 2580 int min_height = curwin->w_height - 2; | |
| 2581 lineoff_T loff0, loff1, loff2; | |
| 2582 | |
| 2583 #ifdef FEAT_DIFF | |
| 2584 if (lp->fill > 0) | |
| 2585 lp->height = 1; | |
| 2586 else | |
| 2587 lp->height = plines_nofill(lp->lnum); | |
| 2588 #else | |
| 2589 lp->height = plines(lp->lnum); | |
| 2590 #endif | |
| 2591 h1 = lp->height; | |
| 2592 if (h1 > min_height) | |
| 2593 return; /* no overlap */ | |
| 2594 | |
| 2595 loff0 = *lp; | |
| 2596 if (dir > 0) | |
| 2597 botline_forw(lp); | |
| 2598 else | |
| 2599 topline_back(lp); | |
| 2600 h2 = lp->height; | |
| 3968 | 2601 if (h2 == MAXCOL || h2 + h1 > min_height) |
| 7 | 2602 { |
| 2603 *lp = loff0; /* no overlap */ | |
| 2604 return; | |
| 2605 } | |
| 2606 | |
| 2607 loff1 = *lp; | |
| 2608 if (dir > 0) | |
| 2609 botline_forw(lp); | |
| 2610 else | |
| 2611 topline_back(lp); | |
| 2612 h3 = lp->height; | |
| 3968 | 2613 if (h3 == MAXCOL || h3 + h2 > min_height) |
| 7 | 2614 { |
| 2615 *lp = loff0; /* no overlap */ | |
| 2616 return; | |
| 2617 } | |
| 2618 | |
| 2619 loff2 = *lp; | |
| 2620 if (dir > 0) | |
| 2621 botline_forw(lp); | |
| 2622 else | |
| 2623 topline_back(lp); | |
| 2624 h4 = lp->height; | |
| 3968 | 2625 if (h4 == MAXCOL || h4 + h3 + h2 > min_height || h3 + h2 + h1 > min_height) |
| 7 | 2626 *lp = loff1; /* 1 line overlap */ |
| 2627 else | |
| 2628 *lp = loff2; /* 2 lines overlap */ | |
| 2629 return; | |
| 2630 } | |
| 2631 | |
| 2632 /* #define KEEP_SCREEN_LINE */ | |
| 2633 /* | |
| 2634 * Scroll 'scroll' lines up or down. | |
| 2635 */ | |
| 2636 void | |
| 2637 halfpage(flag, Prenum) | |
| 2638 int flag; | |
| 2639 linenr_T Prenum; | |
| 2640 { | |
| 2641 long scrolled = 0; | |
| 2642 int i; | |
| 2643 int n; | |
| 2644 int room; | |
| 2645 | |
| 2646 if (Prenum) | |
| 2647 curwin->w_p_scr = (Prenum > curwin->w_height) ? | |
| 2648 curwin->w_height : Prenum; | |
| 2649 n = (curwin->w_p_scr <= curwin->w_height) ? | |
| 2650 curwin->w_p_scr : curwin->w_height; | |
| 2651 | |
| 2652 validate_botline(); | |
| 2653 room = curwin->w_empty_rows; | |
| 2654 #ifdef FEAT_DIFF | |
| 2655 room += curwin->w_filler_rows; | |
| 2656 #endif | |
| 2657 if (flag) | |
| 2658 { | |
| 2659 /* | |
| 2660 * scroll the text up | |
| 2661 */ | |
| 2662 while (n > 0 && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 2663 { | |
| 2664 #ifdef FEAT_DIFF | |
| 2665 if (curwin->w_topfill > 0) | |
| 2666 { | |
| 2667 i = 1; | |
| 2668 if (--n < 0 && scrolled > 0) | |
| 2669 break; | |
| 2670 --curwin->w_topfill; | |
| 2671 } | |
| 2672 else | |
| 2673 #endif | |
| 2674 { | |
| 2675 #ifdef FEAT_DIFF | |
| 2676 i = plines_nofill(curwin->w_topline); | |
| 2677 #else | |
| 2678 i = plines(curwin->w_topline); | |
| 2679 #endif | |
| 2680 n -= i; | |
| 2681 if (n < 0 && scrolled > 0) | |
| 2682 break; | |
| 2683 #ifdef FEAT_FOLDING | |
| 2684 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
| 2685 #endif | |
| 2686 ++curwin->w_topline; | |
| 2687 #ifdef FEAT_DIFF | |
| 2688 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 2689 #endif | |
| 2690 | |
| 2691 #ifndef KEEP_SCREEN_LINE | |
| 2692 if (curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
| 2693 { | |
| 2694 ++curwin->w_cursor.lnum; | |
| 2695 curwin->w_valid &= | |
| 2696 ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
| 2697 } | |
| 2698 #endif | |
| 2699 } | |
| 2700 curwin->w_valid &= ~(VALID_CROW|VALID_WROW); | |
| 2701 scrolled += i; | |
| 2702 | |
| 2703 /* | |
| 2704 * Correct w_botline for changed w_topline. | |
| 2705 * Won't work when there are filler lines. | |
| 2706 */ | |
| 2707 #ifdef FEAT_DIFF | |
| 2708 if (curwin->w_p_diff) | |
| 2709 curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2710 else | |
| 2711 #endif | |
| 2712 { | |
| 2713 room += i; | |
| 2714 do | |
| 2715 { | |
| 2716 i = plines(curwin->w_botline); | |
| 2717 if (i > room) | |
| 2718 break; | |
| 2719 #ifdef FEAT_FOLDING | |
| 2720 (void)hasFolding(curwin->w_botline, NULL, | |
| 2721 &curwin->w_botline); | |
| 2722 #endif | |
| 2723 ++curwin->w_botline; | |
| 2724 room -= i; | |
| 2725 } while (curwin->w_botline <= curbuf->b_ml.ml_line_count); | |
| 2726 } | |
| 2727 } | |
| 2728 | |
| 2729 #ifndef KEEP_SCREEN_LINE | |
| 2730 /* | |
| 2731 * When hit bottom of the file: move cursor down. | |
| 2732 */ | |
| 2733 if (n > 0) | |
| 2734 { | |
| 2735 # ifdef FEAT_FOLDING | |
| 2736 if (hasAnyFolding(curwin)) | |
| 2737 { | |
| 2738 while (--n >= 0 | |
| 2739 && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
| 2740 { | |
| 2741 (void)hasFolding(curwin->w_cursor.lnum, NULL, | |
| 2742 &curwin->w_cursor.lnum); | |
| 2743 ++curwin->w_cursor.lnum; | |
| 2744 } | |
| 2745 } | |
| 2746 else | |
| 2747 # endif | |
| 2748 curwin->w_cursor.lnum += n; | |
| 2749 check_cursor_lnum(); | |
| 2750 } | |
| 2751 #else | |
| 2752 /* try to put the cursor in the same screen line */ | |
| 2753 while ((curwin->w_cursor.lnum < curwin->w_topline || scrolled > 0) | |
| 2754 && curwin->w_cursor.lnum < curwin->w_botline - 1) | |
| 2755 { | |
| 2756 scrolled -= plines(curwin->w_cursor.lnum); | |
| 2757 if (scrolled < 0 && curwin->w_cursor.lnum >= curwin->w_topline) | |
| 2758 break; | |
| 2759 # ifdef FEAT_FOLDING | |
| 2760 (void)hasFolding(curwin->w_cursor.lnum, NULL, | |
| 2761 &curwin->w_cursor.lnum); | |
| 2762 # endif | |
| 2763 ++curwin->w_cursor.lnum; | |
| 2764 } | |
| 2765 #endif | |
| 2766 } | |
| 2767 else | |
| 2768 { | |
| 2769 /* | |
| 2770 * scroll the text down | |
| 2771 */ | |
| 2772 while (n > 0 && curwin->w_topline > 1) | |
| 2773 { | |
| 2774 #ifdef FEAT_DIFF | |
| 2775 if (curwin->w_topfill < diff_check_fill(curwin, curwin->w_topline)) | |
| 2776 { | |
| 2777 i = 1; | |
| 2778 if (--n < 0 && scrolled > 0) | |
| 2779 break; | |
| 2780 ++curwin->w_topfill; | |
| 2781 } | |
| 2782 else | |
| 2783 #endif | |
| 2784 { | |
| 2785 #ifdef FEAT_DIFF | |
| 2786 i = plines_nofill(curwin->w_topline - 1); | |
| 2787 #else | |
| 2788 i = plines(curwin->w_topline - 1); | |
| 2789 #endif | |
| 2790 n -= i; | |
| 2791 if (n < 0 && scrolled > 0) | |
| 2792 break; | |
| 2793 --curwin->w_topline; | |
| 2794 #ifdef FEAT_FOLDING | |
| 2795 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 2796 #endif | |
| 2797 #ifdef FEAT_DIFF | |
| 2798 curwin->w_topfill = 0; | |
| 2799 #endif | |
| 2800 } | |
| 2801 curwin->w_valid &= ~(VALID_CROW|VALID_WROW| | |
| 2802 VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2803 scrolled += i; | |
| 2804 #ifndef KEEP_SCREEN_LINE | |
| 2805 if (curwin->w_cursor.lnum > 1) | |
| 2806 { | |
| 2807 --curwin->w_cursor.lnum; | |
| 2808 curwin->w_valid &= ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
| 2809 } | |
| 2810 #endif | |
| 2811 } | |
| 2812 #ifndef KEEP_SCREEN_LINE | |
| 2813 /* | |
| 2814 * When hit top of the file: move cursor up. | |
| 2815 */ | |
| 2816 if (n > 0) | |
| 2817 { | |
| 2818 if (curwin->w_cursor.lnum <= (linenr_T)n) | |
| 2819 curwin->w_cursor.lnum = 1; | |
| 2820 else | |
| 2821 # ifdef FEAT_FOLDING | |
| 2822 if (hasAnyFolding(curwin)) | |
| 2823 { | |
| 2824 while (--n >= 0 && curwin->w_cursor.lnum > 1) | |
| 2825 { | |
| 2826 --curwin->w_cursor.lnum; | |
| 2827 (void)hasFolding(curwin->w_cursor.lnum, | |
| 2828 &curwin->w_cursor.lnum, NULL); | |
| 2829 } | |
| 2830 } | |
| 2831 else | |
| 2832 # endif | |
| 2833 curwin->w_cursor.lnum -= n; | |
| 2834 } | |
| 2835 #else | |
| 2836 /* try to put the cursor in the same screen line */ | |
| 2837 scrolled += n; /* move cursor when topline is 1 */ | |
| 2838 while (curwin->w_cursor.lnum > curwin->w_topline | |
| 2839 && (scrolled > 0 || curwin->w_cursor.lnum >= curwin->w_botline)) | |
| 2840 { | |
| 2841 scrolled -= plines(curwin->w_cursor.lnum - 1); | |
| 2842 if (scrolled < 0 && curwin->w_cursor.lnum < curwin->w_botline) | |
| 2843 break; | |
| 2844 --curwin->w_cursor.lnum; | |
| 2845 # ifdef FEAT_FOLDING | |
| 2846 foldAdjustCursor(); | |
| 2847 # endif | |
| 2848 } | |
| 2849 #endif | |
| 2850 } | |
| 2851 # ifdef FEAT_FOLDING | |
| 2852 /* Move cursor to first line of closed fold. */ | |
| 2853 foldAdjustCursor(); | |
| 2854 # endif | |
| 2855 #ifdef FEAT_DIFF | |
| 2856 check_topfill(curwin, !flag); | |
| 2857 #endif | |
| 2858 cursor_correct(); | |
| 2859 beginline(BL_SOL | BL_FIX); | |
| 2860 redraw_later(VALID); | |
| 2861 } | |
|
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|
2862 |
|
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|
2863 #if defined(FEAT_CURSORBIND) || defined(PROTO) |
|
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Add the conceal patch from Vince Negri.
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|
2864 void |
|
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Add the conceal patch from Vince Negri.
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|
2865 do_check_cursorbind() |
|
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Add the conceal patch from Vince Negri.
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|
2866 { |
|
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|
2867 linenr_T line = curwin->w_cursor.lnum; |
| 3415 | 2868 colnr_T col = curwin->w_cursor.col; |
| 2869 # ifdef FEAT_VIRTUALEDIT | |
| 2870 colnr_T coladd = curwin->w_cursor.coladd; | |
| 2871 # endif | |
| 3433 | 2872 colnr_T curswant = curwin->w_curswant; |
| 2873 int set_curswant = curwin->w_set_curswant; | |
|
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|
2874 win_T *old_curwin = curwin; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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|
2875 buf_T *old_curbuf = curbuf; |
| 2693 | 2876 int restart_edit_save; |
|
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|
2877 int old_VIsual_select = VIsual_select; |
|
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Add the conceal patch from Vince Negri.
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|
2878 int old_VIsual_active = VIsual_active; |
|
1bac28a53fae
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|
2879 |
|
1bac28a53fae
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|
2880 /* |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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|
2881 * loop through the cursorbound windows |
|
1bac28a53fae
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|
2882 */ |
|
1bac28a53fae
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|
2883 VIsual_select = VIsual_active = 0; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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|
2884 for (curwin = firstwin; curwin; curwin = curwin->w_next) |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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|
2885 { |
|
1bac28a53fae
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|
2886 curbuf = curwin->w_buffer; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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|
2887 /* skip original window and windows with 'noscrollbind' */ |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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|
2888 if (curwin != old_curwin && curwin->w_p_crb) |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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|
2889 { |
|
1bac28a53fae
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|
2890 # ifdef FEAT_DIFF |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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|
2891 if (curwin->w_p_diff) |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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|
2892 curwin->w_cursor.lnum |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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|
2893 = diff_get_corresponding_line(old_curbuf, |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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|
2894 line, |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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|
2895 curbuf, |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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|
2896 curwin->w_cursor.lnum); |
|
1bac28a53fae
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|
2897 else |
|
1bac28a53fae
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|
2898 # endif |
|
1bac28a53fae
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|
2899 curwin->w_cursor.lnum = line; |
|
1bac28a53fae
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|
2900 curwin->w_cursor.col = col; |
| 3415 | 2901 # ifdef FEAT_VIRTUALEDIT |
| 2902 curwin->w_cursor.coladd = coladd; | |
| 2903 # endif | |
| 3433 | 2904 curwin->w_curswant = curswant; |
| 2905 curwin->w_set_curswant = set_curswant; | |
|
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|
2906 |
| 2693 | 2907 /* Make sure the cursor is in a valid position. Temporarily set |
| 2908 * "restart_edit" to allow the cursor to be beyond the EOL. */ | |
| 2909 restart_edit_save = restart_edit; | |
| 2910 restart_edit = TRUE; | |
|
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|
2911 check_cursor(); |
| 2693 | 2912 restart_edit = restart_edit_save; |
|
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|
2913 # ifdef FEAT_MBYTE |
|
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|
2914 /* Correct cursor for multi-byte character. */ |
|
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|
2915 if (has_mbyte) |
|
1bac28a53fae
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|
2916 mb_adjust_cursor(); |
|
1bac28a53fae
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|
2917 # endif |
| 2688 | 2918 redraw_later(VALID); |
|
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|
2919 |
| 2688 | 2920 /* Only scroll when 'scrollbind' hasn't done this. */ |
| 2921 if (!curwin->w_p_scb) | |
| 2922 update_topline(); | |
|
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|
2923 # ifdef FEAT_WINDOWS |
|
1bac28a53fae
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2924 curwin->w_redr_status = TRUE; |
|
1bac28a53fae
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|
2925 # endif |
|
1bac28a53fae
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|
2926 } |
|
1bac28a53fae
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|
2927 } |
|
1bac28a53fae
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|
2928 |
|
1bac28a53fae
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|
2929 /* |
|
1bac28a53fae
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|
2930 * reset current-window |
|
1bac28a53fae
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|
2931 */ |
|
1bac28a53fae
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|
2932 VIsual_select = old_VIsual_select; |
|
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2933 VIsual_active = old_VIsual_active; |
|
1bac28a53fae
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|
2934 curwin = old_curwin; |
|
1bac28a53fae
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|
2935 curbuf = old_curbuf; |
|
1bac28a53fae
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|
2936 } |
|
1bac28a53fae
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|
2937 #endif /* FEAT_CURSORBIND */ |