Mercurial > vim
annotate src/move.c @ 6973:7b35ee02b3c5 v7.4.804
patch 7.4.804
Problem: Xxd doesn't have a license notice.
Solution: Add license as indicated by Juergen.
| author | Bram Moolenaar <bram@vim.org> |
|---|---|
| date | Tue, 04 Aug 2015 17:29:07 +0200 |
| parents | 97cc4ee3e095 |
| children | 286fd54c7ae3 |
| 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)); |
| 6441 | 26 static void curs_rows __ARGS((win_T *wp)); |
| 7 | 27 static void validate_cheight __ARGS((void)); |
| 28 | |
| 29 typedef struct | |
| 30 { | |
| 31 linenr_T lnum; /* line number */ | |
| 32 #ifdef FEAT_DIFF | |
| 33 int fill; /* filler lines */ | |
| 34 #endif | |
| 35 int height; /* height of added line */ | |
| 36 } lineoff_T; | |
| 37 | |
| 38 static void topline_back __ARGS((lineoff_T *lp)); | |
| 39 static void botline_forw __ARGS((lineoff_T *lp)); | |
| 40 #ifdef FEAT_DIFF | |
| 41 static void botline_topline __ARGS((lineoff_T *lp)); | |
| 42 static void topline_botline __ARGS((lineoff_T *lp)); | |
| 43 static void max_topfill __ARGS((void)); | |
| 44 #endif | |
| 45 | |
| 46 /* | |
| 47 * Compute wp->w_botline for the current wp->w_topline. Can be called after | |
| 48 * wp->w_topline changed. | |
| 49 */ | |
| 50 static void | |
| 51 comp_botline(wp) | |
| 52 win_T *wp; | |
| 53 { | |
| 54 int n; | |
| 55 linenr_T lnum; | |
| 56 int done; | |
| 57 #ifdef FEAT_FOLDING | |
| 58 linenr_T last; | |
| 59 int folded; | |
| 60 #endif | |
| 61 | |
| 62 /* | |
| 63 * If w_cline_row is valid, start there. | |
| 64 * Otherwise have to start at w_topline. | |
| 65 */ | |
| 66 check_cursor_moved(wp); | |
| 67 if (wp->w_valid & VALID_CROW) | |
| 68 { | |
| 69 lnum = wp->w_cursor.lnum; | |
| 70 done = wp->w_cline_row; | |
| 71 } | |
| 72 else | |
| 73 { | |
| 74 lnum = wp->w_topline; | |
| 75 done = 0; | |
| 76 } | |
| 77 | |
| 78 for ( ; lnum <= wp->w_buffer->b_ml.ml_line_count; ++lnum) | |
| 79 { | |
| 80 #ifdef FEAT_FOLDING | |
| 81 last = lnum; | |
| 82 folded = FALSE; | |
| 83 if (hasFoldingWin(wp, lnum, NULL, &last, TRUE, NULL)) | |
| 84 { | |
| 85 n = 1; | |
| 86 folded = TRUE; | |
| 87 } | |
| 88 else | |
| 89 #endif | |
| 90 #ifdef FEAT_DIFF | |
| 91 if (lnum == wp->w_topline) | |
| 92 n = plines_win_nofill(wp, lnum, TRUE) + wp->w_topfill; | |
| 93 else | |
| 94 #endif | |
| 95 n = plines_win(wp, lnum, TRUE); | |
| 96 if ( | |
| 97 #ifdef FEAT_FOLDING | |
| 98 lnum <= wp->w_cursor.lnum && last >= wp->w_cursor.lnum | |
| 99 #else | |
| 100 lnum == wp->w_cursor.lnum | |
| 101 #endif | |
| 102 ) | |
| 103 { | |
| 104 wp->w_cline_row = done; | |
| 105 wp->w_cline_height = n; | |
| 106 #ifdef FEAT_FOLDING | |
| 107 wp->w_cline_folded = folded; | |
| 108 #endif | |
| 5764 | 109 redraw_for_cursorline(wp); |
| 7 | 110 wp->w_valid |= (VALID_CROW|VALID_CHEIGHT); |
| 111 } | |
| 112 if (done + n > wp->w_height) | |
| 113 break; | |
| 114 done += n; | |
| 115 #ifdef FEAT_FOLDING | |
| 116 lnum = last; | |
| 117 #endif | |
| 118 } | |
| 119 | |
| 120 /* wp->w_botline is the line that is just below the window */ | |
| 121 wp->w_botline = lnum; | |
| 122 wp->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 123 | |
| 124 set_empty_rows(wp, done); | |
| 125 } | |
| 126 | |
| 127 /* | |
| 5764 | 128 * Redraw when w_cline_row changes and 'relativenumber' or 'cursorline' is |
| 129 * set. | |
| 130 */ | |
| 131 static void | |
| 132 redraw_for_cursorline(wp) | |
| 133 win_T *wp; | |
| 134 { | |
| 135 if ((wp->w_p_rnu | |
| 136 #ifdef FEAT_SYN_HL | |
| 137 || wp->w_p_cul | |
| 138 #endif | |
| 139 ) | |
| 140 && (wp->w_valid & VALID_CROW) == 0 | |
| 141 # ifdef FEAT_INS_EXPAND | |
| 142 && !pum_visible() | |
| 143 # endif | |
| 144 ) | |
| 145 redraw_win_later(wp, SOME_VALID); | |
| 146 } | |
| 147 | |
| 148 /* | |
| 7 | 149 * Update curwin->w_topline and redraw if necessary. |
| 150 * Used to update the screen before printing a message. | |
| 151 */ | |
| 152 void | |
| 153 update_topline_redraw() | |
| 154 { | |
| 155 update_topline(); | |
| 156 if (must_redraw) | |
| 157 update_screen(0); | |
| 158 } | |
| 159 | |
| 160 /* | |
| 161 * Update curwin->w_topline to move the cursor onto the screen. | |
| 162 */ | |
| 163 void | |
| 164 update_topline() | |
| 165 { | |
| 166 long line_count; | |
| 167 int halfheight; | |
| 168 int n; | |
| 169 linenr_T old_topline; | |
| 170 #ifdef FEAT_DIFF | |
| 171 int old_topfill; | |
| 172 #endif | |
| 173 #ifdef FEAT_FOLDING | |
| 174 linenr_T lnum; | |
| 175 #endif | |
| 176 int check_topline = FALSE; | |
| 177 int check_botline = FALSE; | |
| 178 #ifdef FEAT_MOUSE | |
| 179 int save_so = p_so; | |
| 180 #endif | |
| 181 | |
| 182 if (!screen_valid(TRUE)) | |
| 183 return; | |
| 184 | |
| 6247 | 185 /* If the window height is zero just use the cursor line. */ |
| 186 if (curwin->w_height == 0) | |
| 187 { | |
| 188 curwin->w_topline = curwin->w_cursor.lnum; | |
| 189 curwin->w_botline = curwin->w_topline; | |
| 190 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 191 #ifdef FEAT_SCROLLBIND | |
| 192 curwin->w_scbind_pos = 1; | |
| 193 #endif | |
| 194 return; | |
| 195 } | |
| 196 | |
| 7 | 197 check_cursor_moved(curwin); |
| 198 if (curwin->w_valid & VALID_TOPLINE) | |
| 199 return; | |
| 200 | |
| 201 #ifdef FEAT_MOUSE | |
| 202 /* When dragging with the mouse, don't scroll that quickly */ | |
| 1121 | 203 if (mouse_dragging > 0) |
| 7 | 204 p_so = mouse_dragging - 1; |
| 205 #endif | |
| 206 | |
| 207 old_topline = curwin->w_topline; | |
| 208 #ifdef FEAT_DIFF | |
| 209 old_topfill = curwin->w_topfill; | |
| 210 #endif | |
| 211 | |
| 212 /* | |
| 213 * If the buffer is empty, always set topline to 1. | |
| 214 */ | |
| 215 if (bufempty()) /* special case - file is empty */ | |
| 216 { | |
| 217 if (curwin->w_topline != 1) | |
| 218 redraw_later(NOT_VALID); | |
| 219 curwin->w_topline = 1; | |
| 220 curwin->w_botline = 2; | |
| 221 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 222 #ifdef FEAT_SCROLLBIND | |
| 223 curwin->w_scbind_pos = 1; | |
| 224 #endif | |
| 225 } | |
| 226 | |
| 227 /* | |
| 228 * If the cursor is above or near the top of the window, scroll the window | |
| 229 * to show the line the cursor is in, with 'scrolloff' context. | |
| 230 */ | |
| 231 else | |
| 232 { | |
| 233 if (curwin->w_topline > 1) | |
| 234 { | |
| 235 /* If the cursor is above topline, scrolling is always needed. | |
| 236 * If the cursor is far below topline and there is no folding, | |
| 237 * scrolling down is never needed. */ | |
| 238 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 239 check_topline = TRUE; | |
| 240 else if (check_top_offset()) | |
| 241 check_topline = TRUE; | |
| 242 } | |
| 243 #ifdef FEAT_DIFF | |
| 244 /* Check if there are more filler lines than allowed. */ | |
| 245 if (!check_topline && curwin->w_topfill > diff_check_fill(curwin, | |
| 246 curwin->w_topline)) | |
| 247 check_topline = TRUE; | |
| 248 #endif | |
| 249 | |
| 250 if (check_topline) | |
| 251 { | |
| 252 halfheight = curwin->w_height / 2 - 1; | |
| 253 if (halfheight < 2) | |
| 254 halfheight = 2; | |
| 255 | |
| 256 #ifdef FEAT_FOLDING | |
| 257 if (hasAnyFolding(curwin)) | |
| 258 { | |
| 259 /* Count the number of logical lines between the cursor and | |
| 260 * topline + p_so (approximation of how much will be | |
| 261 * scrolled). */ | |
| 262 n = 0; | |
| 263 for (lnum = curwin->w_cursor.lnum; | |
| 264 lnum < curwin->w_topline + p_so; ++lnum) | |
| 265 { | |
| 266 ++n; | |
| 267 /* stop at end of file or when we know we are far off */ | |
| 268 if (lnum >= curbuf->b_ml.ml_line_count || n >= halfheight) | |
| 269 break; | |
| 270 (void)hasFolding(lnum, NULL, &lnum); | |
| 271 } | |
| 272 } | |
| 273 else | |
| 274 #endif | |
| 275 n = curwin->w_topline + p_so - curwin->w_cursor.lnum; | |
| 276 | |
| 277 /* If we weren't very close to begin with, we scroll to put the | |
| 278 * cursor in the middle of the window. Otherwise put the cursor | |
| 279 * near the top of the window. */ | |
| 280 if (n >= halfheight) | |
| 281 scroll_cursor_halfway(FALSE); | |
| 282 else | |
| 283 { | |
| 532 | 284 scroll_cursor_top(scrolljump_value(), FALSE); |
| 7 | 285 check_botline = TRUE; |
| 286 } | |
| 287 } | |
| 288 | |
| 289 else | |
| 290 { | |
| 291 #ifdef FEAT_FOLDING | |
| 292 /* Make sure topline is the first line of a fold. */ | |
| 293 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 294 #endif | |
| 295 check_botline = TRUE; | |
| 296 } | |
| 297 } | |
| 298 | |
| 299 /* | |
| 300 * If the cursor is below the bottom of the window, scroll the window | |
| 301 * to put the cursor on the window. | |
| 302 * When w_botline is invalid, recompute it first, to avoid a redraw later. | |
| 303 * If w_botline was approximated, we might need a redraw later in a few | |
| 304 * cases, but we don't want to spend (a lot of) time recomputing w_botline | |
| 305 * for every small change. | |
| 306 */ | |
| 307 if (check_botline) | |
| 308 { | |
| 309 if (!(curwin->w_valid & VALID_BOTLINE_AP)) | |
| 310 validate_botline(); | |
| 311 | |
| 312 if (curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 313 { | |
| 1744 | 314 if (curwin->w_cursor.lnum < curwin->w_botline) |
| 315 { | |
| 316 if (((long)curwin->w_cursor.lnum | |
| 7 | 317 >= (long)curwin->w_botline - p_so |
| 318 #ifdef FEAT_FOLDING | |
| 319 || hasAnyFolding(curwin) | |
| 320 #endif | |
| 321 )) | |
| 1744 | 322 { |
| 7 | 323 lineoff_T loff; |
| 324 | |
| 1744 | 325 /* Cursor is (a few lines) above botline, check if there are |
| 326 * 'scrolloff' window lines below the cursor. If not, need to | |
| 327 * scroll. */ | |
| 7 | 328 n = curwin->w_empty_rows; |
| 329 loff.lnum = curwin->w_cursor.lnum; | |
| 330 #ifdef FEAT_FOLDING | |
| 331 /* In a fold go to its last line. */ | |
| 332 (void)hasFolding(loff.lnum, NULL, &loff.lnum); | |
| 333 #endif | |
| 334 #ifdef FEAT_DIFF | |
| 335 loff.fill = 0; | |
| 336 n += curwin->w_filler_rows; | |
| 337 #endif | |
| 338 loff.height = 0; | |
| 339 while (loff.lnum < curwin->w_botline | |
| 340 #ifdef FEAT_DIFF | |
| 341 && (loff.lnum + 1 < curwin->w_botline || loff.fill == 0) | |
| 342 #endif | |
| 343 ) | |
| 344 { | |
| 345 n += loff.height; | |
| 346 if (n >= p_so) | |
| 347 break; | |
| 348 botline_forw(&loff); | |
| 349 } | |
| 350 if (n >= p_so) | |
| 351 /* sufficient context, no need to scroll */ | |
| 352 check_botline = FALSE; | |
| 1744 | 353 } |
| 354 else | |
| 355 /* sufficient context, no need to scroll */ | |
| 356 check_botline = FALSE; | |
| 7 | 357 } |
| 358 if (check_botline) | |
| 359 { | |
| 360 #ifdef FEAT_FOLDING | |
| 361 if (hasAnyFolding(curwin)) | |
| 362 { | |
| 363 /* Count the number of logical lines between the cursor and | |
| 364 * botline - p_so (approximation of how much will be | |
| 365 * scrolled). */ | |
| 366 line_count = 0; | |
| 367 for (lnum = curwin->w_cursor.lnum; | |
| 368 lnum >= curwin->w_botline - p_so; --lnum) | |
| 369 { | |
| 370 ++line_count; | |
| 371 /* stop at end of file or when we know we are far off */ | |
| 372 if (lnum <= 0 || line_count > curwin->w_height + 1) | |
| 373 break; | |
| 374 (void)hasFolding(lnum, &lnum, NULL); | |
| 375 } | |
| 376 } | |
| 377 else | |
| 378 #endif | |
| 379 line_count = curwin->w_cursor.lnum - curwin->w_botline | |
| 380 + 1 + p_so; | |
| 381 if (line_count <= curwin->w_height + 1) | |
| 532 | 382 scroll_cursor_bot(scrolljump_value(), FALSE); |
| 7 | 383 else |
| 384 scroll_cursor_halfway(FALSE); | |
| 385 } | |
| 386 } | |
| 387 } | |
| 388 curwin->w_valid |= VALID_TOPLINE; | |
| 389 | |
| 390 /* | |
| 391 * Need to redraw when topline changed. | |
| 392 */ | |
| 393 if (curwin->w_topline != old_topline | |
| 394 #ifdef FEAT_DIFF | |
| 395 || curwin->w_topfill != old_topfill | |
| 396 #endif | |
| 397 ) | |
| 398 { | |
| 3318 | 399 dollar_vcol = -1; |
| 740 | 400 if (curwin->w_skipcol != 0) |
| 7 | 401 { |
| 402 curwin->w_skipcol = 0; | |
| 403 redraw_later(NOT_VALID); | |
| 404 } | |
| 405 else | |
| 406 redraw_later(VALID); | |
| 407 /* May need to set w_skipcol when cursor in w_topline. */ | |
| 408 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 409 validate_cursor(); | |
| 410 } | |
| 411 | |
| 412 #ifdef FEAT_MOUSE | |
| 413 p_so = save_so; | |
| 414 #endif | |
| 415 } | |
| 416 | |
| 417 /* | |
| 532 | 418 * Return the scrolljump value to use for the current window. |
| 419 * When 'scrolljump' is positive use it as-is. | |
| 420 * When 'scrolljump' is negative use it as a percentage of the window height. | |
| 421 */ | |
| 422 static int | |
| 423 scrolljump_value() | |
| 424 { | |
| 425 if (p_sj >= 0) | |
| 426 return (int)p_sj; | |
| 427 return (curwin->w_height * -p_sj) / 100; | |
| 428 } | |
| 429 | |
| 430 /* | |
| 7 | 431 * Return TRUE when there are not 'scrolloff' lines above the cursor for the |
| 432 * current window. | |
| 433 */ | |
| 434 static int | |
| 435 check_top_offset() | |
| 436 { | |
| 437 lineoff_T loff; | |
| 438 int n; | |
| 439 | |
| 440 if (curwin->w_cursor.lnum < curwin->w_topline + p_so | |
| 441 #ifdef FEAT_FOLDING | |
| 442 || hasAnyFolding(curwin) | |
| 443 #endif | |
| 444 ) | |
| 445 { | |
| 446 loff.lnum = curwin->w_cursor.lnum; | |
| 447 #ifdef FEAT_DIFF | |
| 448 loff.fill = 0; | |
| 449 n = curwin->w_topfill; /* always have this context */ | |
| 450 #else | |
| 451 n = 0; | |
| 452 #endif | |
| 453 /* Count the visible screen lines above the cursor line. */ | |
| 454 while (n < p_so) | |
| 455 { | |
| 456 topline_back(&loff); | |
| 457 /* Stop when included a line above the window. */ | |
| 458 if (loff.lnum < curwin->w_topline | |
| 459 #ifdef FEAT_DIFF | |
| 460 || (loff.lnum == curwin->w_topline && loff.fill > 0) | |
| 461 #endif | |
| 462 ) | |
| 463 break; | |
| 464 n += loff.height; | |
| 465 } | |
| 466 if (n < p_so) | |
| 467 return TRUE; | |
| 468 } | |
| 469 return FALSE; | |
| 470 } | |
| 471 | |
| 472 void | |
| 473 update_curswant() | |
| 474 { | |
| 475 if (curwin->w_set_curswant) | |
| 476 { | |
| 477 validate_virtcol(); | |
| 478 curwin->w_curswant = curwin->w_virtcol; | |
| 479 curwin->w_set_curswant = FALSE; | |
| 480 } | |
| 481 } | |
| 482 | |
| 483 /* | |
| 484 * Check if the cursor has moved. Set the w_valid flag accordingly. | |
| 485 */ | |
| 486 void | |
| 487 check_cursor_moved(wp) | |
| 488 win_T *wp; | |
| 489 { | |
| 490 if (wp->w_cursor.lnum != wp->w_valid_cursor.lnum) | |
| 491 { | |
| 492 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 493 |VALID_CHEIGHT|VALID_CROW|VALID_TOPLINE); | |
| 494 wp->w_valid_cursor = wp->w_cursor; | |
| 495 wp->w_valid_leftcol = wp->w_leftcol; | |
| 496 } | |
| 497 else if (wp->w_cursor.col != wp->w_valid_cursor.col | |
| 498 || wp->w_leftcol != wp->w_valid_leftcol | |
| 499 #ifdef FEAT_VIRTUALEDIT | |
| 500 || wp->w_cursor.coladd != wp->w_valid_cursor.coladd | |
| 501 #endif | |
| 502 ) | |
| 503 { | |
| 504 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL); | |
| 505 wp->w_valid_cursor.col = wp->w_cursor.col; | |
| 506 wp->w_valid_leftcol = wp->w_leftcol; | |
| 507 #ifdef FEAT_VIRTUALEDIT | |
| 508 wp->w_valid_cursor.coladd = wp->w_cursor.coladd; | |
| 509 #endif | |
| 510 } | |
| 511 } | |
| 512 | |
| 513 /* | |
| 514 * Call this function when some window settings have changed, which require | |
| 515 * the cursor position, botline and topline to be recomputed and the window to | |
| 516 * be redrawn. E.g, when changing the 'wrap' option or folding. | |
| 517 */ | |
| 518 void | |
| 519 changed_window_setting() | |
| 520 { | |
| 521 changed_window_setting_win(curwin); | |
| 522 } | |
| 523 | |
| 524 void | |
| 525 changed_window_setting_win(wp) | |
| 526 win_T *wp; | |
| 527 { | |
| 528 wp->w_lines_valid = 0; | |
| 529 changed_line_abv_curs_win(wp); | |
| 530 wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP|VALID_TOPLINE); | |
| 531 redraw_win_later(wp, NOT_VALID); | |
| 532 } | |
| 533 | |
| 534 /* | |
| 535 * Set wp->w_topline to a certain number. | |
| 536 */ | |
| 537 void | |
| 538 set_topline(wp, lnum) | |
| 539 win_T *wp; | |
| 540 linenr_T lnum; | |
| 541 { | |
| 542 #ifdef FEAT_FOLDING | |
| 543 /* go to first of folded lines */ | |
| 544 (void)hasFoldingWin(wp, lnum, &lnum, NULL, TRUE, NULL); | |
| 545 #endif | |
| 546 /* Approximate the value of w_botline */ | |
| 547 wp->w_botline += lnum - wp->w_topline; | |
| 548 wp->w_topline = lnum; | |
| 1744 | 549 #ifdef FEAT_AUTOCMD |
| 550 wp->w_topline_was_set = TRUE; | |
| 551 #endif | |
| 7 | 552 #ifdef FEAT_DIFF |
| 553 wp->w_topfill = 0; | |
| 554 #endif | |
| 555 wp->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_TOPLINE); | |
| 556 /* Don't set VALID_TOPLINE here, 'scrolloff' needs to be checked. */ | |
| 557 redraw_later(VALID); | |
| 558 } | |
| 559 | |
| 560 /* | |
| 561 * Call this function when the length of the cursor line (in screen | |
| 562 * characters) has changed, and the change is before the cursor. | |
| 563 * Need to take care of w_botline separately! | |
| 564 */ | |
| 565 void | |
| 566 changed_cline_bef_curs() | |
| 567 { | |
| 568 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 569 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 570 } | |
| 571 | |
| 572 void | |
| 573 changed_cline_bef_curs_win(wp) | |
| 574 win_T *wp; | |
| 575 { | |
| 576 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 577 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 578 } | |
| 579 | |
| 580 /* | |
| 581 * Call this function when the length of a line (in screen characters) above | |
| 582 * the cursor have changed. | |
| 583 * Need to take care of w_botline separately! | |
| 584 */ | |
| 585 void | |
| 586 changed_line_abv_curs() | |
| 587 { | |
| 588 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
| 589 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 590 } | |
| 591 | |
| 592 void | |
| 593 changed_line_abv_curs_win(wp) | |
| 594 win_T *wp; | |
| 595 { | |
| 596 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
| 597 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 598 } | |
| 599 | |
| 600 /* | |
| 601 * Make sure the value of curwin->w_botline is valid. | |
| 602 */ | |
| 603 void | |
| 604 validate_botline() | |
| 605 { | |
| 606 if (!(curwin->w_valid & VALID_BOTLINE)) | |
| 607 comp_botline(curwin); | |
| 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)) | |
| 6441 | 669 curs_rows(curwin); |
| 7 | 670 } |
| 671 #endif | |
| 672 | |
| 673 /* | |
| 674 * Compute wp->w_cline_row and wp->w_cline_height, based on the current value | |
|
2154
7c8c7c95a865
First step in the Vim 7.3 branch. Changed version numbers.
Bram Moolenaar <bram@zimbu.org>
parents:
2082
diff
changeset
|
675 * of wp->w_topline. |
| 7 | 676 */ |
| 677 static void | |
| 6441 | 678 curs_rows(wp) |
| 7 | 679 win_T *wp; |
| 680 { | |
| 681 linenr_T lnum; | |
| 682 int i; | |
| 683 int all_invalid; | |
| 684 int valid; | |
| 685 #ifdef FEAT_FOLDING | |
| 686 long fold_count; | |
| 687 #endif | |
| 688 | |
| 689 /* Check if wp->w_lines[].wl_size is invalid */ | |
| 690 all_invalid = (!redrawing() | |
| 691 || wp->w_lines_valid == 0 | |
| 692 || wp->w_lines[0].wl_lnum > wp->w_topline); | |
| 693 i = 0; | |
| 694 wp->w_cline_row = 0; | |
| 695 for (lnum = wp->w_topline; lnum < wp->w_cursor.lnum; ++i) | |
| 696 { | |
| 697 valid = FALSE; | |
| 698 if (!all_invalid && i < wp->w_lines_valid) | |
| 699 { | |
| 700 if (wp->w_lines[i].wl_lnum < lnum || !wp->w_lines[i].wl_valid) | |
| 701 continue; /* skip changed or deleted lines */ | |
| 702 if (wp->w_lines[i].wl_lnum == lnum) | |
| 703 { | |
| 704 #ifdef FEAT_FOLDING | |
| 705 /* Check for newly inserted lines below this row, in which | |
| 706 * case we need to check for folded lines. */ | |
| 707 if (!wp->w_buffer->b_mod_set | |
| 708 || wp->w_lines[i].wl_lastlnum < wp->w_cursor.lnum | |
| 709 || wp->w_buffer->b_mod_top | |
| 710 > wp->w_lines[i].wl_lastlnum + 1) | |
| 711 #endif | |
| 712 valid = TRUE; | |
| 713 } | |
| 714 else if (wp->w_lines[i].wl_lnum > lnum) | |
| 715 --i; /* hold at inserted lines */ | |
| 716 } | |
| 717 if (valid | |
| 718 #ifdef FEAT_DIFF | |
| 719 && (lnum != wp->w_topline || !wp->w_p_diff) | |
| 720 #endif | |
| 721 ) | |
| 722 { | |
| 723 #ifdef FEAT_FOLDING | |
| 724 lnum = wp->w_lines[i].wl_lastlnum + 1; | |
| 725 /* Cursor inside folded lines, don't count this row */ | |
| 726 if (lnum > wp->w_cursor.lnum) | |
| 727 break; | |
| 728 #else | |
| 729 ++lnum; | |
| 730 #endif | |
| 731 wp->w_cline_row += wp->w_lines[i].wl_size; | |
| 732 } | |
| 733 else | |
| 734 { | |
| 735 #ifdef FEAT_FOLDING | |
| 736 fold_count = foldedCount(wp, lnum, NULL); | |
| 737 if (fold_count) | |
| 738 { | |
| 739 lnum += fold_count; | |
| 740 if (lnum > wp->w_cursor.lnum) | |
| 741 break; | |
| 742 ++wp->w_cline_row; | |
| 743 } | |
| 744 else | |
| 745 #endif | |
| 746 #ifdef FEAT_DIFF | |
| 747 if (lnum == wp->w_topline) | |
| 748 wp->w_cline_row += plines_win_nofill(wp, lnum++, TRUE) | |
| 749 + wp->w_topfill; | |
| 750 else | |
| 751 #endif | |
| 752 wp->w_cline_row += plines_win(wp, lnum++, TRUE); | |
| 753 } | |
| 754 } | |
| 755 | |
| 756 check_cursor_moved(wp); | |
| 757 if (!(wp->w_valid & VALID_CHEIGHT)) | |
| 758 { | |
| 759 if (all_invalid | |
| 760 || i == wp->w_lines_valid | |
| 761 || (i < wp->w_lines_valid | |
| 762 && (!wp->w_lines[i].wl_valid | |
| 763 || wp->w_lines[i].wl_lnum != wp->w_cursor.lnum))) | |
| 764 { | |
| 765 #ifdef FEAT_DIFF | |
| 766 if (wp->w_cursor.lnum == wp->w_topline) | |
| 767 wp->w_cline_height = plines_win_nofill(wp, wp->w_cursor.lnum, | |
| 768 TRUE) + wp->w_topfill; | |
| 769 else | |
| 770 #endif | |
| 771 wp->w_cline_height = plines_win(wp, wp->w_cursor.lnum, TRUE); | |
| 772 #ifdef FEAT_FOLDING | |
| 773 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
| 774 NULL, NULL, TRUE, NULL); | |
| 775 #endif | |
| 776 } | |
| 777 else if (i > wp->w_lines_valid) | |
| 778 { | |
| 779 /* a line that is too long to fit on the last screen line */ | |
| 780 wp->w_cline_height = 0; | |
| 781 #ifdef FEAT_FOLDING | |
| 782 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
| 783 NULL, NULL, TRUE, NULL); | |
| 784 #endif | |
| 785 } | |
| 786 else | |
| 787 { | |
| 788 wp->w_cline_height = wp->w_lines[i].wl_size; | |
| 789 #ifdef FEAT_FOLDING | |
| 790 wp->w_cline_folded = wp->w_lines[i].wl_folded; | |
| 791 #endif | |
| 792 } | |
| 793 } | |
| 794 | |
| 5764 | 795 redraw_for_cursorline(curwin); |
| 7 | 796 wp->w_valid |= VALID_CROW|VALID_CHEIGHT; |
| 797 | |
| 798 } | |
| 799 | |
| 800 /* | |
| 801 * Validate curwin->w_virtcol only. | |
| 802 */ | |
| 803 void | |
| 804 validate_virtcol() | |
| 805 { | |
| 806 validate_virtcol_win(curwin); | |
| 807 } | |
| 808 | |
| 809 /* | |
| 810 * Validate wp->w_virtcol only. | |
| 811 */ | |
| 812 void | |
| 813 validate_virtcol_win(wp) | |
| 814 win_T *wp; | |
| 815 { | |
| 816 check_cursor_moved(wp); | |
| 817 if (!(wp->w_valid & VALID_VIRTCOL)) | |
| 818 { | |
| 819 getvvcol(wp, &wp->w_cursor, NULL, &(wp->w_virtcol), NULL); | |
| 820 wp->w_valid |= VALID_VIRTCOL; | |
| 740 | 821 #ifdef FEAT_SYN_HL |
| 752 | 822 if (wp->w_p_cuc |
| 823 # ifdef FEAT_INS_EXPAND | |
| 824 && !pum_visible() | |
| 825 # endif | |
| 826 ) | |
| 740 | 827 redraw_win_later(wp, SOME_VALID); |
| 828 #endif | |
| 7 | 829 } |
| 830 } | |
| 831 | |
| 832 /* | |
| 833 * Validate curwin->w_cline_height only. | |
| 834 */ | |
| 835 static void | |
| 836 validate_cheight() | |
| 837 { | |
| 838 check_cursor_moved(curwin); | |
| 839 if (!(curwin->w_valid & VALID_CHEIGHT)) | |
| 840 { | |
| 841 #ifdef FEAT_DIFF | |
| 842 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 843 curwin->w_cline_height = plines_nofill(curwin->w_cursor.lnum) | |
| 844 + curwin->w_topfill; | |
| 845 else | |
| 846 #endif | |
| 847 curwin->w_cline_height = plines(curwin->w_cursor.lnum); | |
| 848 #ifdef FEAT_FOLDING | |
| 849 curwin->w_cline_folded = hasFolding(curwin->w_cursor.lnum, NULL, NULL); | |
| 850 #endif | |
| 851 curwin->w_valid |= VALID_CHEIGHT; | |
| 852 } | |
| 853 } | |
| 854 | |
| 855 /* | |
| 1668 | 856 * Validate w_wcol and w_virtcol only. |
| 7 | 857 */ |
| 858 void | |
| 859 validate_cursor_col() | |
| 860 { | |
| 861 colnr_T off; | |
| 862 colnr_T col; | |
|
2070
4483ee552619
updated for version 7.2.355
Bram Moolenaar <bram@zimbu.org>
parents:
1980
diff
changeset
|
863 int width; |
| 7 | 864 |
| 865 validate_virtcol(); | |
| 866 if (!(curwin->w_valid & VALID_WCOL)) | |
| 867 { | |
| 868 col = curwin->w_virtcol; | |
| 869 off = curwin_col_off(); | |
| 870 col += off; | |
|
2070
4483ee552619
updated for version 7.2.355
Bram Moolenaar <bram@zimbu.org>
parents:
1980
diff
changeset
|
871 width = W_WIDTH(curwin) - off + curwin_col_off2(); |
| 7 | 872 |
| 873 /* long line wrapping, adjust curwin->w_wrow */ | |
| 1668 | 874 if (curwin->w_p_wrap |
| 875 && col >= (colnr_T)W_WIDTH(curwin) | |
|
2070
4483ee552619
updated for version 7.2.355
Bram Moolenaar <bram@zimbu.org>
parents:
1980
diff
changeset
|
876 && width > 0) |
|
4483ee552619
updated for version 7.2.355
Bram Moolenaar <bram@zimbu.org>
parents:
1980
diff
changeset
|
877 /* use same formula as what is used in curs_columns() */ |
|
4483ee552619
updated for version 7.2.355
Bram Moolenaar <bram@zimbu.org>
parents:
1980
diff
changeset
|
878 col -= ((col - W_WIDTH(curwin)) / width + 1) * width; |
| 1668 | 879 if (col > (int)curwin->w_leftcol) |
| 880 col -= curwin->w_leftcol; | |
| 881 else | |
| 882 col = 0; | |
| 7 | 883 curwin->w_wcol = col; |
| 1668 | 884 |
| 7 | 885 curwin->w_valid |= VALID_WCOL; |
| 886 } | |
| 887 } | |
| 888 | |
| 889 /* | |
|
2178
c6f1aa1e9f32
Add 'relativenumber' patch from Markus Heidelberg.
Bram Moolenaar <bram@vim.org>
parents:
2154
diff
changeset
|
890 * Compute offset of a window, occupied by absolute or relative line number, |
|
c6f1aa1e9f32
Add 'relativenumber' patch from Markus Heidelberg.
Bram Moolenaar <bram@vim.org>
parents:
2154
diff
changeset
|
891 * fold column and sign column (these don't move when scrolling horizontally). |
| 7 | 892 */ |
| 893 int | |
| 894 win_col_off(wp) | |
| 895 win_T *wp; | |
| 896 { | |
|
2178
c6f1aa1e9f32
Add 'relativenumber' patch from Markus Heidelberg.
Bram Moolenaar <bram@vim.org>
parents:
2154
diff
changeset
|
897 return (((wp->w_p_nu || wp->w_p_rnu) ? number_width(wp) + 1 : 0) |
| 7 | 898 #ifdef FEAT_CMDWIN |
| 899 + (cmdwin_type == 0 || wp != curwin ? 0 : 1) | |
| 900 #endif | |
| 901 #ifdef FEAT_FOLDING | |
| 902 + wp->w_p_fdc | |
| 903 #endif | |
| 904 #ifdef FEAT_SIGNS | |
| 905 + ( | |
| 906 # ifdef FEAT_NETBEANS_INTG | |
| 2210 | 907 /* show glyph gutter in netbeans */ |
| 6689 | 908 wp->w_buffer->b_has_sign_column || |
| 7 | 909 # endif |
| 910 wp->w_buffer->b_signlist != NULL ? 2 : 0) | |
| 911 #endif | |
| 912 ); | |
| 913 } | |
| 914 | |
| 915 int | |
| 916 curwin_col_off() | |
| 917 { | |
| 918 return win_col_off(curwin); | |
| 919 } | |
| 920 | |
| 921 /* | |
| 922 * Return the difference in column offset for the second screen line of a | |
|
2178
c6f1aa1e9f32
Add 'relativenumber' patch from Markus Heidelberg.
Bram Moolenaar <bram@vim.org>
parents:
2154
diff
changeset
|
923 * wrapped line. It's 8 if 'number' or 'relativenumber' is on and 'n' is in |
|
c6f1aa1e9f32
Add 'relativenumber' patch from Markus Heidelberg.
Bram Moolenaar <bram@vim.org>
parents:
2154
diff
changeset
|
924 * 'cpoptions'. |
| 7 | 925 */ |
| 926 int | |
| 927 win_col_off2(wp) | |
| 928 win_T *wp; | |
| 929 { | |
|
2178
c6f1aa1e9f32
Add 'relativenumber' patch from Markus Heidelberg.
Bram Moolenaar <bram@vim.org>
parents:
2154
diff
changeset
|
930 if ((wp->w_p_nu || wp->w_p_rnu) && vim_strchr(p_cpo, CPO_NUMCOL) != NULL) |
| 13 | 931 return number_width(wp) + 1; |
| 7 | 932 return 0; |
| 933 } | |
| 934 | |
| 935 int | |
| 936 curwin_col_off2() | |
| 937 { | |
| 938 return win_col_off2(curwin); | |
| 939 } | |
| 940 | |
| 941 /* | |
| 942 * compute curwin->w_wcol and curwin->w_virtcol. | |
| 943 * Also updates curwin->w_wrow and curwin->w_cline_row. | |
| 944 * Also updates curwin->w_leftcol. | |
| 945 */ | |
| 946 void | |
| 3263 | 947 curs_columns(may_scroll) |
| 948 int may_scroll; /* when TRUE, may scroll horizontally */ | |
| 7 | 949 { |
| 950 int diff; | |
| 951 int extra; /* offset for first screen line */ | |
| 952 int off_left, off_right; | |
| 953 int n; | |
| 954 int p_lines; | |
| 955 int width = 0; | |
| 956 int textwidth; | |
| 957 int new_leftcol; | |
| 958 colnr_T startcol; | |
| 959 colnr_T endcol; | |
| 960 colnr_T prev_skipcol; | |
| 961 | |
| 962 /* | |
| 963 * First make sure that w_topline is valid (after moving the cursor). | |
| 964 */ | |
| 965 update_topline(); | |
| 966 | |
| 967 /* | |
| 968 * Next make sure that w_cline_row is valid. | |
| 969 */ | |
| 970 if (!(curwin->w_valid & VALID_CROW)) | |
| 6441 | 971 curs_rows(curwin); |
| 7 | 972 |
| 973 /* | |
| 974 * Compute the number of virtual columns. | |
| 975 */ | |
| 976 #ifdef FEAT_FOLDING | |
| 977 if (curwin->w_cline_folded) | |
| 978 /* In a folded line the cursor is always in the first column */ | |
| 979 startcol = curwin->w_virtcol = endcol = curwin->w_leftcol; | |
| 980 else | |
| 981 #endif | |
| 982 getvvcol(curwin, &curwin->w_cursor, | |
| 983 &startcol, &(curwin->w_virtcol), &endcol); | |
| 984 | |
| 985 /* remove '$' from change command when cursor moves onto it */ | |
| 986 if (startcol > dollar_vcol) | |
| 3318 | 987 dollar_vcol = -1; |
| 7 | 988 |
| 989 extra = curwin_col_off(); | |
| 990 curwin->w_wcol = curwin->w_virtcol + extra; | |
| 991 endcol += extra; | |
| 992 | |
| 993 /* | |
| 994 * Now compute w_wrow, counting screen lines from w_cline_row. | |
| 995 */ | |
| 996 curwin->w_wrow = curwin->w_cline_row; | |
| 997 | |
| 998 textwidth = W_WIDTH(curwin) - extra; | |
| 999 if (textwidth <= 0) | |
| 1000 { | |
| 1001 /* No room for text, put cursor in last char of window. */ | |
| 1002 curwin->w_wcol = W_WIDTH(curwin) - 1; | |
| 1003 curwin->w_wrow = curwin->w_height - 1; | |
| 1004 } | |
| 1005 else if (curwin->w_p_wrap | |
| 1006 #ifdef FEAT_VERTSPLIT | |
| 1007 && curwin->w_width != 0 | |
| 1008 #endif | |
| 1009 ) | |
| 1010 { | |
| 1011 width = textwidth + curwin_col_off2(); | |
| 1012 | |
| 1013 /* long line wrapping, adjust curwin->w_wrow */ | |
| 1014 if (curwin->w_wcol >= W_WIDTH(curwin)) | |
| 1015 { | |
|
2070
4483ee552619
updated for version 7.2.355
Bram Moolenaar <bram@zimbu.org>
parents:
1980
diff
changeset
|
1016 /* this same formula is used in validate_cursor_col() */ |
| 7 | 1017 n = (curwin->w_wcol - W_WIDTH(curwin)) / width + 1; |
| 1018 curwin->w_wcol -= n * width; | |
| 1019 curwin->w_wrow += n; | |
| 1020 | |
| 1021 #ifdef FEAT_LINEBREAK | |
| 1022 /* When cursor wraps to first char of next line in Insert | |
| 1023 * mode, the 'showbreak' string isn't shown, backup to first | |
| 1024 * column */ | |
| 1025 if (*p_sbr && *ml_get_cursor() == NUL | |
| 1026 && curwin->w_wcol == (int)vim_strsize(p_sbr)) | |
| 1027 curwin->w_wcol = 0; | |
| 1028 #endif | |
| 1029 } | |
| 1030 } | |
| 1031 | |
| 1032 /* No line wrapping: compute curwin->w_leftcol if scrolling is on and line | |
| 1033 * is not folded. | |
| 1034 * If scrolling is off, curwin->w_leftcol is assumed to be 0 */ | |
| 3263 | 1035 else if (may_scroll |
| 7 | 1036 #ifdef FEAT_FOLDING |
| 1037 && !curwin->w_cline_folded | |
| 1038 #endif | |
| 1039 ) | |
| 1040 { | |
| 1041 /* | |
| 1042 * If Cursor is left of the screen, scroll rightwards. | |
| 1043 * If Cursor is right of the screen, scroll leftwards | |
| 1044 * If we get closer to the edge than 'sidescrolloff', scroll a little | |
| 1045 * extra | |
| 1046 */ | |
| 1047 off_left = (int)startcol - (int)curwin->w_leftcol - p_siso; | |
| 1048 off_right = (int)endcol - (int)(curwin->w_leftcol + W_WIDTH(curwin) | |
| 1049 - p_siso) + 1; | |
| 1050 if (off_left < 0 || off_right > 0) | |
| 1051 { | |
| 1052 if (off_left < 0) | |
| 1053 diff = -off_left; | |
| 1054 else | |
| 1055 diff = off_right; | |
| 1056 | |
| 1057 /* When far off or not enough room on either side, put cursor in | |
| 1058 * middle of window. */ | |
| 1059 if (p_ss == 0 || diff >= textwidth / 2 || off_right >= off_left) | |
| 1060 new_leftcol = curwin->w_wcol - extra - textwidth / 2; | |
| 1061 else | |
| 1062 { | |
| 1063 if (diff < p_ss) | |
| 1064 diff = p_ss; | |
| 1065 if (off_left < 0) | |
| 1066 new_leftcol = curwin->w_leftcol - diff; | |
| 1067 else | |
| 1068 new_leftcol = curwin->w_leftcol + diff; | |
| 1069 } | |
| 1070 if (new_leftcol < 0) | |
| 1071 new_leftcol = 0; | |
| 1072 if (new_leftcol != (int)curwin->w_leftcol) | |
| 1073 { | |
| 1074 curwin->w_leftcol = new_leftcol; | |
| 1075 /* screen has to be redrawn with new curwin->w_leftcol */ | |
| 1076 redraw_later(NOT_VALID); | |
| 1077 } | |
| 1078 } | |
| 1079 curwin->w_wcol -= curwin->w_leftcol; | |
| 1080 } | |
| 1081 else if (curwin->w_wcol > (int)curwin->w_leftcol) | |
| 1082 curwin->w_wcol -= curwin->w_leftcol; | |
| 1083 else | |
| 1084 curwin->w_wcol = 0; | |
| 1085 | |
| 1086 #ifdef FEAT_DIFF | |
| 1087 /* Skip over filler lines. At the top use w_topfill, there | |
| 1088 * may be some filler lines above the window. */ | |
| 1089 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 1090 curwin->w_wrow += curwin->w_topfill; | |
| 1091 else | |
| 1092 curwin->w_wrow += diff_check_fill(curwin, curwin->w_cursor.lnum); | |
| 1093 #endif | |
| 1094 | |
| 1095 prev_skipcol = curwin->w_skipcol; | |
| 1096 | |
| 1097 p_lines = 0; | |
| 1098 if ((curwin->w_wrow >= curwin->w_height | |
| 1099 || ((prev_skipcol > 0 | |
| 1100 || curwin->w_wrow + p_so >= curwin->w_height) | |
| 1101 && (p_lines = | |
| 1102 #ifdef FEAT_DIFF | |
| 1103 plines_win_nofill | |
| 1104 #else | |
| 1105 plines_win | |
| 1106 #endif | |
| 1107 (curwin, curwin->w_cursor.lnum, FALSE)) | |
| 1108 - 1 >= curwin->w_height)) | |
| 1109 && curwin->w_height != 0 | |
| 1110 && curwin->w_cursor.lnum == curwin->w_topline | |
| 1111 && width > 0 | |
| 1112 #ifdef FEAT_VERTSPLIT | |
| 1113 && curwin->w_width != 0 | |
| 1114 #endif | |
| 1115 ) | |
| 1116 { | |
| 1117 /* Cursor past end of screen. Happens with a single line that does | |
| 1118 * not fit on screen. Find a skipcol to show the text around the | |
| 1119 * cursor. Avoid scrolling all the time. compute value of "extra": | |
| 1120 * 1: Less than "p_so" lines above | |
| 1121 * 2: Less than "p_so" lines below | |
| 1122 * 3: both of them */ | |
| 1123 extra = 0; | |
| 1124 if (curwin->w_skipcol + p_so * width > curwin->w_virtcol) | |
| 1125 extra = 1; | |
| 1126 /* Compute last display line of the buffer line that we want at the | |
| 1127 * bottom of the window. */ | |
| 1128 if (p_lines == 0) | |
| 1129 p_lines = plines_win(curwin, curwin->w_cursor.lnum, FALSE); | |
| 1130 --p_lines; | |
| 1131 if (p_lines > curwin->w_wrow + p_so) | |
| 1132 n = curwin->w_wrow + p_so; | |
| 1133 else | |
| 1134 n = p_lines; | |
| 1135 if ((colnr_T)n >= curwin->w_height + curwin->w_skipcol / width) | |
| 1136 extra += 2; | |
| 1137 | |
| 1138 if (extra == 3 || p_lines < p_so * 2) | |
| 1139 { | |
| 1140 /* not enough room for 'scrolloff', put cursor in the middle */ | |
| 1141 n = curwin->w_virtcol / width; | |
| 1142 if (n > curwin->w_height / 2) | |
| 1143 n -= curwin->w_height / 2; | |
| 1144 else | |
| 1145 n = 0; | |
| 1146 /* don't skip more than necessary */ | |
| 1147 if (n > p_lines - curwin->w_height + 1) | |
| 1148 n = p_lines - curwin->w_height + 1; | |
| 1149 curwin->w_skipcol = n * width; | |
| 1150 } | |
| 1151 else if (extra == 1) | |
| 1152 { | |
| 1153 /* less then 'scrolloff' lines above, decrease skipcol */ | |
| 1154 extra = (curwin->w_skipcol + p_so * width - curwin->w_virtcol | |
| 1155 + width - 1) / width; | |
| 1156 if (extra > 0) | |
| 1157 { | |
| 1158 if ((colnr_T)(extra * width) > curwin->w_skipcol) | |
| 1159 extra = curwin->w_skipcol / width; | |
| 1160 curwin->w_skipcol -= extra * width; | |
| 1161 } | |
| 1162 } | |
| 1163 else if (extra == 2) | |
| 1164 { | |
| 1165 /* less then 'scrolloff' lines below, increase skipcol */ | |
| 1166 endcol = (n - curwin->w_height + 1) * width; | |
| 1167 while (endcol > curwin->w_virtcol) | |
| 1168 endcol -= width; | |
| 1169 if (endcol > curwin->w_skipcol) | |
| 1170 curwin->w_skipcol = endcol; | |
| 1171 } | |
| 1172 | |
| 1173 curwin->w_wrow -= curwin->w_skipcol / width; | |
| 1174 if (curwin->w_wrow >= curwin->w_height) | |
| 1175 { | |
| 1176 /* small window, make sure cursor is in it */ | |
| 1177 extra = curwin->w_wrow - curwin->w_height + 1; | |
| 1178 curwin->w_skipcol += extra * width; | |
| 1179 curwin->w_wrow -= extra; | |
| 1180 } | |
| 1181 | |
| 1182 extra = ((int)prev_skipcol - (int)curwin->w_skipcol) / width; | |
| 1183 if (extra > 0) | |
| 1184 win_ins_lines(curwin, 0, extra, FALSE, FALSE); | |
| 1185 else if (extra < 0) | |
| 1186 win_del_lines(curwin, 0, -extra, FALSE, FALSE); | |
| 1187 } | |
| 1188 else | |
| 1189 curwin->w_skipcol = 0; | |
| 1190 if (prev_skipcol != curwin->w_skipcol) | |
| 1191 redraw_later(NOT_VALID); | |
| 1192 | |
| 740 | 1193 #ifdef FEAT_SYN_HL |
| 5749 | 1194 /* Redraw when w_virtcol changes and 'cursorcolumn' is set */ |
| 1195 if (curwin->w_p_cuc && (curwin->w_valid & VALID_VIRTCOL) == 0 | |
| 1196 # ifdef FEAT_INS_EXPAND | |
| 1197 && !pum_visible() | |
| 1198 # endif | |
| 1199 ) | |
| 1200 redraw_later(SOME_VALID); | |
|
2178
c6f1aa1e9f32
Add 'relativenumber' patch from Markus Heidelberg.
Bram Moolenaar <bram@vim.org>
parents:
2154
diff
changeset
|
1201 #endif |
| 740 | 1202 |
| 7 | 1203 curwin->w_valid |= VALID_WCOL|VALID_WROW|VALID_VIRTCOL; |
| 1204 } | |
| 1205 | |
| 1206 /* | |
| 1207 * Scroll the current window down by "line_count" logical lines. "CTRL-Y" | |
| 1208 */ | |
| 1209 void | |
| 1210 scrolldown(line_count, byfold) | |
| 1211 long line_count; | |
| 1877 | 1212 int byfold UNUSED; /* TRUE: count a closed fold as one line */ |
| 7 | 1213 { |
| 1214 long done = 0; /* total # of physical lines done */ | |
| 1215 int wrow; | |
| 1216 int moved = FALSE; | |
| 1217 | |
| 1218 #ifdef FEAT_FOLDING | |
| 1219 linenr_T first; | |
| 1220 | |
| 1221 /* Make sure w_topline is at the first of a sequence of folded lines. */ | |
| 1222 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 1223 #endif | |
| 1224 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1225 while (line_count-- > 0) | |
| 1226 { | |
| 1227 #ifdef FEAT_DIFF | |
| 1980 | 1228 if (curwin->w_topfill < diff_check(curwin, curwin->w_topline) |
| 1229 && curwin->w_topfill < curwin->w_height - 1) | |
| 7 | 1230 { |
| 1231 ++curwin->w_topfill; | |
| 1232 ++done; | |
| 1233 } | |
| 1234 else | |
| 1235 #endif | |
| 1236 { | |
| 1237 if (curwin->w_topline == 1) | |
| 1238 break; | |
| 1239 --curwin->w_topline; | |
| 1240 #ifdef FEAT_DIFF | |
| 1241 curwin->w_topfill = 0; | |
| 1242 #endif | |
| 1243 #ifdef FEAT_FOLDING | |
| 1244 /* A sequence of folded lines only counts for one logical line */ | |
| 1245 if (hasFolding(curwin->w_topline, &first, NULL)) | |
| 1246 { | |
| 1247 ++done; | |
| 1248 if (!byfold) | |
| 1249 line_count -= curwin->w_topline - first - 1; | |
| 1250 curwin->w_botline -= curwin->w_topline - first; | |
| 1251 curwin->w_topline = first; | |
| 1252 } | |
| 1253 else | |
| 1254 #endif | |
| 1255 #ifdef FEAT_DIFF | |
| 1256 done += plines_nofill(curwin->w_topline); | |
| 1257 #else | |
| 1258 done += plines(curwin->w_topline); | |
| 1259 #endif | |
| 1260 } | |
| 1261 --curwin->w_botline; /* approximate w_botline */ | |
| 1262 invalidate_botline(); | |
| 1263 } | |
| 1264 curwin->w_wrow += done; /* keep w_wrow updated */ | |
| 1265 curwin->w_cline_row += done; /* keep w_cline_row updated */ | |
| 1266 | |
| 1267 #ifdef FEAT_DIFF | |
| 1268 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 1269 curwin->w_cline_row = 0; | |
| 1270 check_topfill(curwin, TRUE); | |
| 1271 #endif | |
| 1272 | |
| 1273 /* | |
| 1274 * Compute the row number of the last row of the cursor line | |
| 1275 * and move the cursor onto the displayed part of the window. | |
| 1276 */ | |
| 1277 wrow = curwin->w_wrow; | |
| 1278 if (curwin->w_p_wrap | |
| 1279 #ifdef FEAT_VERTSPLIT | |
| 1280 && curwin->w_width != 0 | |
| 1281 #endif | |
| 1282 ) | |
| 1283 { | |
| 1284 validate_virtcol(); | |
| 1285 validate_cheight(); | |
| 1286 wrow += curwin->w_cline_height - 1 - | |
| 1287 curwin->w_virtcol / W_WIDTH(curwin); | |
| 1288 } | |
| 1289 while (wrow >= curwin->w_height && curwin->w_cursor.lnum > 1) | |
| 1290 { | |
| 1291 #ifdef FEAT_FOLDING | |
| 1292 if (hasFolding(curwin->w_cursor.lnum, &first, NULL)) | |
| 1293 { | |
| 1294 --wrow; | |
| 1295 if (first == 1) | |
| 1296 curwin->w_cursor.lnum = 1; | |
| 1297 else | |
| 1298 curwin->w_cursor.lnum = first - 1; | |
| 1299 } | |
| 1300 else | |
| 1301 #endif | |
| 1302 wrow -= plines(curwin->w_cursor.lnum--); | |
| 1303 curwin->w_valid &= | |
| 1304 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
| 1305 moved = TRUE; | |
| 1306 } | |
| 1307 if (moved) | |
| 1308 { | |
| 1309 #ifdef FEAT_FOLDING | |
| 1310 /* Move cursor to first line of closed fold. */ | |
| 1311 foldAdjustCursor(); | |
| 1312 #endif | |
| 1313 coladvance(curwin->w_curswant); | |
| 1314 } | |
| 1315 } | |
| 1316 | |
| 1317 /* | |
| 1318 * Scroll the current window up by "line_count" logical lines. "CTRL-E" | |
| 1319 */ | |
| 1320 void | |
| 1321 scrollup(line_count, byfold) | |
| 1322 long line_count; | |
| 1877 | 1323 int byfold UNUSED; /* TRUE: count a closed fold as one line */ |
| 7 | 1324 { |
| 1325 #if defined(FEAT_FOLDING) || defined(FEAT_DIFF) | |
| 1326 linenr_T lnum; | |
| 1327 | |
| 1328 if ( | |
| 1329 # ifdef FEAT_FOLDING | |
| 1330 (byfold && hasAnyFolding(curwin)) | |
| 1331 # ifdef FEAT_DIFF | |
| 1332 || | |
| 1333 # endif | |
| 1334 # endif | |
| 1335 # ifdef FEAT_DIFF | |
| 1336 curwin->w_p_diff | |
| 1337 # endif | |
| 1338 ) | |
| 1339 { | |
| 1340 /* count each sequence of folded lines as one logical line */ | |
| 1341 lnum = curwin->w_topline; | |
| 1342 while (line_count--) | |
| 1343 { | |
| 1344 # ifdef FEAT_DIFF | |
| 1345 if (curwin->w_topfill > 0) | |
| 1346 --curwin->w_topfill; | |
| 1347 else | |
| 1348 # endif | |
| 1349 { | |
| 1350 # ifdef FEAT_FOLDING | |
| 1351 if (byfold) | |
| 1352 (void)hasFolding(lnum, NULL, &lnum); | |
| 1353 # endif | |
| 1354 if (lnum >= curbuf->b_ml.ml_line_count) | |
| 1355 break; | |
| 1356 ++lnum; | |
| 1357 # ifdef FEAT_DIFF | |
| 1358 curwin->w_topfill = diff_check_fill(curwin, lnum); | |
| 1359 # endif | |
| 1360 } | |
| 1361 } | |
| 1362 /* approximate w_botline */ | |
| 1363 curwin->w_botline += lnum - curwin->w_topline; | |
| 1364 curwin->w_topline = lnum; | |
| 1365 } | |
| 1366 else | |
| 1367 #endif | |
| 1368 { | |
| 1369 curwin->w_topline += line_count; | |
| 1370 curwin->w_botline += line_count; /* approximate w_botline */ | |
| 1371 } | |
| 1372 | |
| 1373 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
| 1374 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
| 1375 if (curwin->w_botline > curbuf->b_ml.ml_line_count + 1) | |
| 1376 curwin->w_botline = curbuf->b_ml.ml_line_count + 1; | |
| 1377 | |
| 1378 #ifdef FEAT_DIFF | |
| 1379 check_topfill(curwin, FALSE); | |
| 1380 #endif | |
| 1381 | |
| 1382 #ifdef FEAT_FOLDING | |
| 1383 if (hasAnyFolding(curwin)) | |
| 1384 /* Make sure w_topline is at the first of a sequence of folded lines. */ | |
| 1385 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 1386 #endif | |
| 1387 | |
| 1388 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1389 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 1390 { | |
| 1391 curwin->w_cursor.lnum = curwin->w_topline; | |
| 1392 curwin->w_valid &= | |
| 1393 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
| 1394 coladvance(curwin->w_curswant); | |
| 1395 } | |
| 1396 } | |
| 1397 | |
| 1398 #ifdef FEAT_DIFF | |
| 1399 /* | |
| 1400 * Don't end up with too many filler lines in the window. | |
| 1401 */ | |
| 1402 void | |
| 1403 check_topfill(wp, down) | |
| 1404 win_T *wp; | |
| 1405 int down; /* when TRUE scroll down when not enough space */ | |
| 1406 { | |
| 1407 int n; | |
| 1408 | |
| 1409 if (wp->w_topfill > 0) | |
| 1410 { | |
| 1411 n = plines_win_nofill(wp, wp->w_topline, TRUE); | |
| 1412 if (wp->w_topfill + n > wp->w_height) | |
| 1413 { | |
| 1414 if (down && wp->w_topline > 1) | |
| 1415 { | |
| 1416 --wp->w_topline; | |
| 1417 wp->w_topfill = 0; | |
| 1418 } | |
| 1419 else | |
| 1420 { | |
| 1421 wp->w_topfill = wp->w_height - n; | |
| 1422 if (wp->w_topfill < 0) | |
| 1423 wp->w_topfill = 0; | |
| 1424 } | |
| 1425 } | |
| 1426 } | |
| 1427 } | |
| 1428 | |
| 1429 /* | |
| 1430 * Use as many filler lines as possible for w_topline. Make sure w_topline | |
| 1431 * is still visible. | |
| 1432 */ | |
| 1433 static void | |
| 1434 max_topfill() | |
| 1435 { | |
| 1436 int n; | |
| 1437 | |
| 1438 n = plines_nofill(curwin->w_topline); | |
| 1439 if (n >= curwin->w_height) | |
| 1440 curwin->w_topfill = 0; | |
| 1441 else | |
| 1442 { | |
| 1443 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 1444 if (curwin->w_topfill + n > curwin->w_height) | |
| 1445 curwin->w_topfill = curwin->w_height - n; | |
| 1446 } | |
| 1447 } | |
| 1448 #endif | |
| 1449 | |
| 1450 #if defined(FEAT_INS_EXPAND) || defined(PROTO) | |
| 1451 /* | |
| 1452 * Scroll the screen one line down, but don't do it if it would move the | |
| 1453 * cursor off the screen. | |
| 1454 */ | |
| 1455 void | |
| 1456 scrolldown_clamp() | |
| 1457 { | |
| 1458 int end_row; | |
| 1459 #ifdef FEAT_DIFF | |
| 1460 int can_fill = (curwin->w_topfill | |
| 1461 < diff_check_fill(curwin, curwin->w_topline)); | |
| 1462 #endif | |
| 1463 | |
| 1464 if (curwin->w_topline <= 1 | |
| 1465 #ifdef FEAT_DIFF | |
| 1466 && !can_fill | |
| 1467 #endif | |
| 1468 ) | |
| 1469 return; | |
| 1470 | |
| 1471 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1472 | |
| 1473 /* | |
| 1474 * Compute the row number of the last row of the cursor line | |
| 1475 * and make sure it doesn't go off the screen. Make sure the cursor | |
| 1476 * doesn't go past 'scrolloff' lines from the screen end. | |
| 1477 */ | |
| 1478 end_row = curwin->w_wrow; | |
| 1479 #ifdef FEAT_DIFF | |
| 1480 if (can_fill) | |
| 1481 ++end_row; | |
| 1482 else | |
| 1483 end_row += plines_nofill(curwin->w_topline - 1); | |
| 1484 #else | |
| 1485 end_row += plines(curwin->w_topline - 1); | |
| 1486 #endif | |
| 1487 if (curwin->w_p_wrap | |
| 1488 #ifdef FEAT_VERTSPLIT | |
| 1489 && curwin->w_width != 0 | |
| 1490 #endif | |
| 1491 ) | |
| 1492 { | |
| 1493 validate_cheight(); | |
| 1494 validate_virtcol(); | |
| 1495 end_row += curwin->w_cline_height - 1 - | |
| 1496 curwin->w_virtcol / W_WIDTH(curwin); | |
| 1497 } | |
| 1498 if (end_row < curwin->w_height - p_so) | |
| 1499 { | |
| 1500 #ifdef FEAT_DIFF | |
| 1501 if (can_fill) | |
| 1502 { | |
| 1503 ++curwin->w_topfill; | |
| 1504 check_topfill(curwin, TRUE); | |
| 1505 } | |
| 1506 else | |
| 1507 { | |
| 1508 --curwin->w_topline; | |
| 1509 curwin->w_topfill = 0; | |
| 1510 } | |
| 1511 #else | |
| 1512 --curwin->w_topline; | |
| 1513 #endif | |
| 1514 #ifdef FEAT_FOLDING | |
| 1515 hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 1516 #endif | |
| 1517 --curwin->w_botline; /* approximate w_botline */ | |
| 1518 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1519 } | |
| 1520 } | |
| 1521 | |
| 1522 /* | |
| 1523 * Scroll the screen one line up, but don't do it if it would move the cursor | |
| 1524 * off the screen. | |
| 1525 */ | |
| 1526 void | |
| 1527 scrollup_clamp() | |
| 1528 { | |
| 1529 int start_row; | |
| 1530 | |
| 1531 if (curwin->w_topline == curbuf->b_ml.ml_line_count | |
| 1532 #ifdef FEAT_DIFF | |
| 1533 && curwin->w_topfill == 0 | |
| 1534 #endif | |
| 1535 ) | |
| 1536 return; | |
| 1537 | |
| 1538 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1539 | |
| 1540 /* | |
| 1541 * Compute the row number of the first row of the cursor line | |
| 1542 * and make sure it doesn't go off the screen. Make sure the cursor | |
| 1543 * doesn't go before 'scrolloff' lines from the screen start. | |
| 1544 */ | |
| 1545 #ifdef FEAT_DIFF | |
| 1546 start_row = curwin->w_wrow - plines_nofill(curwin->w_topline) | |
| 1547 - curwin->w_topfill; | |
| 1548 #else | |
| 1549 start_row = curwin->w_wrow - plines(curwin->w_topline); | |
| 1550 #endif | |
| 1551 if (curwin->w_p_wrap | |
| 1552 #ifdef FEAT_VERTSPLIT | |
| 1553 && curwin->w_width != 0 | |
| 1554 #endif | |
| 1555 ) | |
| 1556 { | |
| 1557 validate_virtcol(); | |
| 1558 start_row -= curwin->w_virtcol / W_WIDTH(curwin); | |
| 1559 } | |
| 1560 if (start_row >= p_so) | |
| 1561 { | |
| 1562 #ifdef FEAT_DIFF | |
| 1563 if (curwin->w_topfill > 0) | |
| 1564 --curwin->w_topfill; | |
| 1565 else | |
| 1566 #endif | |
| 36 | 1567 { |
| 1568 #ifdef FEAT_FOLDING | |
| 1569 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
| 1570 #endif | |
| 7 | 1571 ++curwin->w_topline; |
| 36 | 1572 } |
| 7 | 1573 ++curwin->w_botline; /* approximate w_botline */ |
| 1574 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1575 } | |
| 1576 } | |
| 1577 #endif /* FEAT_INS_EXPAND */ | |
| 1578 | |
| 1579 /* | |
| 1580 * Add one line above "lp->lnum". This can be a filler line, a closed fold or | |
| 1581 * a (wrapped) text line. Uses and sets "lp->fill". | |
| 1582 * 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
|
1583 * Lines above the first one are incredibly high: MAXCOL. |
| 7 | 1584 */ |
| 1585 static void | |
| 1586 topline_back(lp) | |
| 1587 lineoff_T *lp; | |
| 1588 { | |
| 1589 #ifdef FEAT_DIFF | |
| 1590 if (lp->fill < diff_check_fill(curwin, lp->lnum)) | |
| 1591 { | |
| 1592 /* Add a filler line. */ | |
| 1593 ++lp->fill; | |
| 1594 lp->height = 1; | |
| 1595 } | |
| 1596 else | |
| 1597 #endif | |
| 1598 { | |
| 1599 --lp->lnum; | |
| 1600 #ifdef FEAT_DIFF | |
| 1601 lp->fill = 0; | |
| 1602 #endif | |
| 1603 if (lp->lnum < 1) | |
| 1604 lp->height = MAXCOL; | |
| 1605 else | |
| 1606 #ifdef FEAT_FOLDING | |
| 1607 if (hasFolding(lp->lnum, &lp->lnum, NULL)) | |
| 1608 /* Add a closed fold */ | |
| 1609 lp->height = 1; | |
| 1610 else | |
| 1611 #endif | |
| 1612 { | |
| 1613 #ifdef FEAT_DIFF | |
| 1614 lp->height = plines_nofill(lp->lnum); | |
| 1615 #else | |
| 1616 lp->height = plines(lp->lnum); | |
| 1617 #endif | |
| 1618 } | |
| 1619 } | |
| 1620 } | |
| 1621 | |
| 1622 /* | |
| 1623 * Add one line below "lp->lnum". This can be a filler line, a closed fold or | |
| 1624 * a (wrapped) text line. Uses and sets "lp->fill". | |
| 1625 * Returns the height of the added line in "lp->height". | |
| 1626 * Lines below the last one are incredibly high. | |
| 1627 */ | |
| 1628 static void | |
| 1629 botline_forw(lp) | |
| 1630 lineoff_T *lp; | |
| 1631 { | |
| 1632 #ifdef FEAT_DIFF | |
| 1633 if (lp->fill < diff_check_fill(curwin, lp->lnum + 1)) | |
| 1634 { | |
| 1635 /* Add a filler line. */ | |
| 1636 ++lp->fill; | |
| 1637 lp->height = 1; | |
| 1638 } | |
| 1639 else | |
| 1640 #endif | |
| 1641 { | |
| 1642 ++lp->lnum; | |
| 1643 #ifdef FEAT_DIFF | |
| 1644 lp->fill = 0; | |
| 1645 #endif | |
| 1646 if (lp->lnum > curbuf->b_ml.ml_line_count) | |
| 1647 lp->height = MAXCOL; | |
| 1648 else | |
| 1649 #ifdef FEAT_FOLDING | |
| 1650 if (hasFolding(lp->lnum, NULL, &lp->lnum)) | |
| 1651 /* Add a closed fold */ | |
| 1652 lp->height = 1; | |
| 1653 else | |
| 1654 #endif | |
| 1655 { | |
| 1656 #ifdef FEAT_DIFF | |
| 1657 lp->height = plines_nofill(lp->lnum); | |
| 1658 #else | |
| 1659 lp->height = plines(lp->lnum); | |
| 1660 #endif | |
| 1661 } | |
| 1662 } | |
| 1663 } | |
| 1664 | |
| 1665 #ifdef FEAT_DIFF | |
| 1666 /* | |
| 1667 * Switch from including filler lines below lp->lnum to including filler | |
| 1668 * lines above loff.lnum + 1. This keeps pointing to the same line. | |
| 1669 * When there are no filler lines nothing changes. | |
| 1670 */ | |
| 1671 static void | |
| 1672 botline_topline(lp) | |
| 1673 lineoff_T *lp; | |
| 1674 { | |
| 1675 if (lp->fill > 0) | |
| 1676 { | |
| 1677 ++lp->lnum; | |
| 1678 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
| 1679 } | |
| 1680 } | |
| 1681 | |
| 1682 /* | |
| 1683 * Switch from including filler lines above lp->lnum to including filler | |
| 1684 * lines below loff.lnum - 1. This keeps pointing to the same line. | |
| 1685 * When there are no filler lines nothing changes. | |
| 1686 */ | |
| 1687 static void | |
| 1688 topline_botline(lp) | |
| 1689 lineoff_T *lp; | |
| 1690 { | |
| 1691 if (lp->fill > 0) | |
| 1692 { | |
| 1693 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
| 1694 --lp->lnum; | |
| 1695 } | |
| 1696 } | |
| 1697 #endif | |
| 1698 | |
| 1699 /* | |
| 1700 * Recompute topline to put the cursor at the top of the window. | |
| 1701 * Scroll at least "min_scroll" lines. | |
| 1702 * If "always" is TRUE, always set topline (for "zt"). | |
| 1703 */ | |
| 1704 void | |
| 1705 scroll_cursor_top(min_scroll, always) | |
| 1706 int min_scroll; | |
| 1707 int always; | |
| 1708 { | |
| 1709 int scrolled = 0; | |
| 1710 int extra = 0; | |
| 1711 int used; | |
| 1712 int i; | |
| 1713 linenr_T top; /* just above displayed lines */ | |
| 1714 linenr_T bot; /* just below displayed lines */ | |
| 1715 linenr_T old_topline = curwin->w_topline; | |
| 1716 #ifdef FEAT_DIFF | |
| 1717 linenr_T old_topfill = curwin->w_topfill; | |
| 1718 #endif | |
| 1719 linenr_T new_topline; | |
| 1720 int off = p_so; | |
| 1721 | |
| 1722 #ifdef FEAT_MOUSE | |
| 1723 if (mouse_dragging > 0) | |
| 1724 off = mouse_dragging - 1; | |
| 1725 #endif | |
| 1726 | |
| 1727 /* | |
| 1728 * Decrease topline until: | |
| 1729 * - it has become 1 | |
| 1730 * - (part of) the cursor line is moved off the screen or | |
| 1731 * - moved at least 'scrolljump' lines and | |
| 1732 * - at least 'scrolloff' lines above and below the cursor | |
| 1733 */ | |
| 1734 validate_cheight(); | |
| 1735 used = curwin->w_cline_height; | |
| 1736 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 1737 scrolled = used; | |
| 1738 | |
| 1739 #ifdef FEAT_FOLDING | |
| 1740 if (hasFolding(curwin->w_cursor.lnum, &top, &bot)) | |
| 1741 { | |
| 1742 --top; | |
| 1743 ++bot; | |
| 1744 } | |
| 1745 else | |
| 1746 #endif | |
| 1747 { | |
| 1748 top = curwin->w_cursor.lnum - 1; | |
| 1749 bot = curwin->w_cursor.lnum + 1; | |
| 1750 } | |
| 1751 new_topline = top + 1; | |
| 1752 | |
| 1753 #ifdef FEAT_DIFF | |
| 1754 /* count filler lines of the cursor window as context */ | |
| 1755 i = diff_check_fill(curwin, curwin->w_cursor.lnum); | |
| 1756 used += i; | |
| 1757 extra += i; | |
| 1758 #endif | |
| 1759 | |
| 1760 /* | |
| 1761 * Check if the lines from "top" to "bot" fit in the window. If they do, | |
| 1762 * set new_topline and advance "top" and "bot" to include more lines. | |
| 1763 */ | |
| 1764 while (top > 0) | |
| 1765 { | |
| 1766 #ifdef FEAT_FOLDING | |
| 1767 if (hasFolding(top, &top, NULL)) | |
| 1768 /* count one logical line for a sequence of folded lines */ | |
| 1769 i = 1; | |
| 1770 else | |
| 1771 #endif | |
| 1772 i = plines(top); | |
| 1773 used += i; | |
| 1774 if (extra + i <= off && bot < curbuf->b_ml.ml_line_count) | |
| 1775 { | |
| 1776 #ifdef FEAT_FOLDING | |
| 1777 if (hasFolding(bot, NULL, &bot)) | |
| 1778 /* count one logical line for a sequence of folded lines */ | |
| 1779 ++used; | |
| 1780 else | |
| 1781 #endif | |
| 1782 used += plines(bot); | |
| 1783 } | |
| 1784 if (used > curwin->w_height) | |
| 1785 break; | |
| 1786 if (top < curwin->w_topline) | |
| 1787 scrolled += i; | |
| 1788 | |
| 1789 /* | |
| 1790 * If scrolling is needed, scroll at least 'sj' lines. | |
| 1791 */ | |
| 1792 if ((new_topline >= curwin->w_topline || scrolled > min_scroll) | |
| 1793 && extra >= off) | |
| 1794 break; | |
| 1795 | |
| 1796 extra += i; | |
| 1797 new_topline = top; | |
| 1798 --top; | |
| 1799 ++bot; | |
| 1800 } | |
| 1801 | |
| 1802 /* | |
| 1803 * If we don't have enough space, put cursor in the middle. | |
| 1804 * This makes sure we get the same position when using "k" and "j" | |
| 1805 * in a small window. | |
| 1806 */ | |
| 1807 if (used > curwin->w_height) | |
| 1808 scroll_cursor_halfway(FALSE); | |
| 1809 else | |
| 1810 { | |
| 1811 /* | |
| 1812 * If "always" is FALSE, only adjust topline to a lower value, higher | |
| 1813 * value may happen with wrapping lines | |
| 1814 */ | |
| 1815 if (new_topline < curwin->w_topline || always) | |
| 1816 curwin->w_topline = new_topline; | |
| 1817 if (curwin->w_topline > curwin->w_cursor.lnum) | |
| 1818 curwin->w_topline = curwin->w_cursor.lnum; | |
| 1819 #ifdef FEAT_DIFF | |
| 1820 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 1821 if (curwin->w_topfill > 0 && extra > off) | |
| 1822 { | |
| 1823 curwin->w_topfill -= extra - off; | |
| 1824 if (curwin->w_topfill < 0) | |
| 1825 curwin->w_topfill = 0; | |
| 1826 } | |
| 1827 check_topfill(curwin, FALSE); | |
| 1828 #endif | |
| 1829 if (curwin->w_topline != old_topline | |
| 1830 #ifdef FEAT_DIFF | |
| 1831 || curwin->w_topfill != old_topfill | |
| 1832 #endif | |
| 1833 ) | |
| 1834 curwin->w_valid &= | |
| 1835 ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 1836 curwin->w_valid |= VALID_TOPLINE; | |
| 1837 } | |
| 1838 } | |
| 1839 | |
| 1840 /* | |
| 1841 * Set w_empty_rows and w_filler_rows for window "wp", having used up "used" | |
| 1842 * screen lines for text lines. | |
| 1843 */ | |
| 1844 void | |
| 1845 set_empty_rows(wp, used) | |
| 1846 win_T *wp; | |
| 1847 int used; | |
| 1848 { | |
| 1849 #ifdef FEAT_DIFF | |
| 1850 wp->w_filler_rows = 0; | |
| 1851 #endif | |
| 1852 if (used == 0) | |
| 1853 wp->w_empty_rows = 0; /* single line that doesn't fit */ | |
| 1854 else | |
| 1855 { | |
| 1856 wp->w_empty_rows = wp->w_height - used; | |
| 1857 #ifdef FEAT_DIFF | |
| 1858 if (wp->w_botline <= wp->w_buffer->b_ml.ml_line_count) | |
| 1859 { | |
| 1860 wp->w_filler_rows = diff_check_fill(wp, wp->w_botline); | |
| 1861 if (wp->w_empty_rows > wp->w_filler_rows) | |
| 1862 wp->w_empty_rows -= wp->w_filler_rows; | |
| 1863 else | |
| 1864 { | |
| 1865 wp->w_filler_rows = wp->w_empty_rows; | |
| 1866 wp->w_empty_rows = 0; | |
| 1867 } | |
| 1868 } | |
| 1869 #endif | |
| 1870 } | |
| 1871 } | |
| 1872 | |
| 1873 /* | |
| 1874 * Recompute topline to put the cursor at the bottom of the window. | |
| 1875 * Scroll at least "min_scroll" lines. | |
| 1876 * If "set_topbot" is TRUE, set topline and botline first (for "zb"). | |
| 1877 * This is messy stuff!!! | |
| 1878 */ | |
| 1879 void | |
| 1880 scroll_cursor_bot(min_scroll, set_topbot) | |
| 1881 int min_scroll; | |
| 1882 int set_topbot; | |
| 1883 { | |
| 1884 int used; | |
| 1885 int scrolled = 0; | |
| 1886 int extra = 0; | |
| 1887 int i; | |
| 1888 linenr_T line_count; | |
| 1889 linenr_T old_topline = curwin->w_topline; | |
| 1890 lineoff_T loff; | |
| 1891 lineoff_T boff; | |
| 1892 #ifdef FEAT_DIFF | |
| 1893 int old_topfill = curwin->w_topfill; | |
| 1894 int fill_below_window; | |
| 1895 #endif | |
| 1896 linenr_T old_botline = curwin->w_botline; | |
| 1897 linenr_T old_valid = curwin->w_valid; | |
| 1898 int old_empty_rows = curwin->w_empty_rows; | |
| 1899 linenr_T cln; /* Cursor Line Number */ | |
| 1900 | |
| 1901 cln = curwin->w_cursor.lnum; | |
| 1902 if (set_topbot) | |
| 1903 { | |
| 1904 used = 0; | |
| 1905 curwin->w_botline = cln + 1; | |
| 1906 #ifdef FEAT_DIFF | |
| 1907 loff.fill = 0; | |
| 1908 #endif | |
| 1909 for (curwin->w_topline = curwin->w_botline; | |
| 1910 curwin->w_topline > 1; | |
| 1911 curwin->w_topline = loff.lnum) | |
| 1912 { | |
| 1913 loff.lnum = curwin->w_topline; | |
| 1914 topline_back(&loff); | |
|
2082
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
1915 if (loff.height == MAXCOL || used + loff.height > curwin->w_height) |
| 7 | 1916 break; |
| 1917 used += loff.height; | |
| 1918 #ifdef FEAT_DIFF | |
| 1919 curwin->w_topfill = loff.fill; | |
| 1920 #endif | |
| 1921 } | |
| 1922 set_empty_rows(curwin, used); | |
| 1923 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 1924 if (curwin->w_topline != old_topline | |
| 1925 #ifdef FEAT_DIFF | |
| 1926 || curwin->w_topfill != old_topfill | |
| 1927 #endif | |
| 1928 ) | |
| 1929 curwin->w_valid &= ~(VALID_WROW|VALID_CROW); | |
| 1930 } | |
| 1931 else | |
| 1932 validate_botline(); | |
| 1933 | |
| 1934 /* The lines of the cursor line itself are always used. */ | |
| 1935 #ifdef FEAT_DIFF | |
| 1936 used = plines_nofill(cln); | |
| 1937 #else | |
| 1938 validate_cheight(); | |
| 1939 used = curwin->w_cline_height; | |
| 1940 #endif | |
| 1941 | |
| 1942 /* If the cursor is below botline, we will at least scroll by the height | |
| 1943 * of the cursor line. Correct for empty lines, which are really part of | |
| 1944 * botline. */ | |
| 1945 if (cln >= curwin->w_botline) | |
| 1946 { | |
| 1947 scrolled = used; | |
| 1948 if (cln == curwin->w_botline) | |
| 1949 scrolled -= curwin->w_empty_rows; | |
| 1950 } | |
| 1951 | |
| 1952 /* | |
| 1953 * Stop counting lines to scroll when | |
| 1954 * - hitting start of the file | |
| 1955 * - scrolled nothing or at least 'sj' lines | |
| 1956 * - at least 'so' lines below the cursor | |
| 1957 * - lines between botline and cursor have been counted | |
| 1958 */ | |
| 1959 #ifdef FEAT_FOLDING | |
| 1960 if (!hasFolding(curwin->w_cursor.lnum, &loff.lnum, &boff.lnum)) | |
| 1961 #endif | |
| 1962 { | |
| 1963 loff.lnum = cln; | |
| 1964 boff.lnum = cln; | |
| 1965 } | |
| 1966 #ifdef FEAT_DIFF | |
| 1967 loff.fill = 0; | |
| 1968 boff.fill = 0; | |
| 1969 fill_below_window = diff_check_fill(curwin, curwin->w_botline) | |
| 1970 - curwin->w_filler_rows; | |
| 1971 #endif | |
| 1972 | |
| 1973 while (loff.lnum > 1) | |
| 1974 { | |
| 1975 /* Stop when scrolled nothing or at least "min_scroll", found "extra" | |
| 1976 * context for 'scrolloff' and counted all lines below the window. */ | |
| 1977 if ((((scrolled <= 0 || scrolled >= min_scroll) | |
| 1978 && extra >= ( | |
| 1979 #ifdef FEAT_MOUSE | |
| 1121 | 1980 mouse_dragging > 0 ? mouse_dragging - 1 : |
| 7 | 1981 #endif |
| 1982 p_so)) | |
| 1983 || boff.lnum + 1 > curbuf->b_ml.ml_line_count) | |
| 1984 && loff.lnum <= curwin->w_botline | |
| 1985 #ifdef FEAT_DIFF | |
| 1986 && (loff.lnum < curwin->w_botline | |
| 1987 || loff.fill >= fill_below_window) | |
| 1988 #endif | |
| 1989 ) | |
| 1990 break; | |
| 1991 | |
| 1992 /* Add one line above */ | |
| 1993 topline_back(&loff); | |
|
2082
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
1994 if (loff.height == MAXCOL) |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
1995 used = MAXCOL; |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
1996 else |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
1997 used += loff.height; |
| 7 | 1998 if (used > curwin->w_height) |
| 1999 break; | |
| 2000 if (loff.lnum >= curwin->w_botline | |
| 2001 #ifdef FEAT_DIFF | |
| 2002 && (loff.lnum > curwin->w_botline | |
| 2003 || loff.fill <= fill_below_window) | |
| 2004 #endif | |
| 2005 ) | |
| 2006 { | |
| 2007 /* Count screen lines that are below the window. */ | |
| 2008 scrolled += loff.height; | |
| 2009 if (loff.lnum == curwin->w_botline | |
| 2010 #ifdef FEAT_DIFF | |
| 2011 && boff.fill == 0 | |
| 2012 #endif | |
| 2013 ) | |
| 2014 scrolled -= curwin->w_empty_rows; | |
| 2015 } | |
| 2016 | |
| 2017 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
| 2018 { | |
| 2019 /* Add one line below */ | |
| 2020 botline_forw(&boff); | |
| 2021 used += boff.height; | |
| 2022 if (used > curwin->w_height) | |
| 2023 break; | |
| 2024 if (extra < ( | |
| 2025 #ifdef FEAT_MOUSE | |
| 2026 mouse_dragging > 0 ? mouse_dragging - 1 : | |
| 2027 #endif | |
| 2028 p_so) || scrolled < min_scroll) | |
| 2029 { | |
| 2030 extra += boff.height; | |
| 2031 if (boff.lnum >= curwin->w_botline | |
| 2032 #ifdef FEAT_DIFF | |
| 2033 || (boff.lnum + 1 == curwin->w_botline | |
| 2034 && boff.fill > curwin->w_filler_rows) | |
| 2035 #endif | |
| 2036 ) | |
| 2037 { | |
| 2038 /* Count screen lines that are below the window. */ | |
| 2039 scrolled += boff.height; | |
| 2040 if (boff.lnum == curwin->w_botline | |
| 2041 #ifdef FEAT_DIFF | |
| 2042 && boff.fill == 0 | |
| 2043 #endif | |
| 2044 ) | |
| 2045 scrolled -= curwin->w_empty_rows; | |
| 2046 } | |
| 2047 } | |
| 2048 } | |
| 2049 } | |
| 2050 | |
| 2051 /* curwin->w_empty_rows is larger, no need to scroll */ | |
| 2052 if (scrolled <= 0) | |
| 2053 line_count = 0; | |
| 2054 /* more than a screenfull, don't scroll but redraw */ | |
| 2055 else if (used > curwin->w_height) | |
| 2056 line_count = used; | |
| 2057 /* scroll minimal number of lines */ | |
| 2058 else | |
| 2059 { | |
| 2060 line_count = 0; | |
| 2061 #ifdef FEAT_DIFF | |
| 2062 boff.fill = curwin->w_topfill; | |
| 2063 #endif | |
| 2064 boff.lnum = curwin->w_topline - 1; | |
| 2065 for (i = 0; i < scrolled && boff.lnum < curwin->w_botline; ) | |
| 2066 { | |
| 2067 botline_forw(&boff); | |
| 2068 i += boff.height; | |
| 2069 ++line_count; | |
| 2070 } | |
| 2071 if (i < scrolled) /* below curwin->w_botline, don't scroll */ | |
| 2072 line_count = 9999; | |
| 2073 } | |
| 2074 | |
| 2075 /* | |
| 2076 * Scroll up if the cursor is off the bottom of the screen a bit. | |
| 2077 * Otherwise put it at 1/2 of the screen. | |
| 2078 */ | |
| 2079 if (line_count >= curwin->w_height && line_count > min_scroll) | |
| 2080 scroll_cursor_halfway(FALSE); | |
| 2081 else | |
| 2082 scrollup(line_count, TRUE); | |
| 2083 | |
| 2084 /* | |
| 2085 * If topline didn't change we need to restore w_botline and w_empty_rows | |
| 2086 * (we changed them). | |
| 2087 * If topline did change, update_screen() will set botline. | |
| 2088 */ | |
| 2089 if (curwin->w_topline == old_topline && set_topbot) | |
| 2090 { | |
| 2091 curwin->w_botline = old_botline; | |
| 2092 curwin->w_empty_rows = old_empty_rows; | |
| 2093 curwin->w_valid = old_valid; | |
| 2094 } | |
| 2095 curwin->w_valid |= VALID_TOPLINE; | |
| 2096 } | |
| 2097 | |
| 2098 /* | |
| 2099 * Recompute topline to put the cursor halfway the window | |
| 2100 * If "atend" is TRUE, also put it halfway at the end of the file. | |
| 2101 */ | |
| 2102 void | |
| 2103 scroll_cursor_halfway(atend) | |
| 2104 int atend; | |
| 2105 { | |
| 2106 int above = 0; | |
| 2107 linenr_T topline; | |
| 2108 #ifdef FEAT_DIFF | |
| 2109 int topfill = 0; | |
| 2110 #endif | |
| 2111 int below = 0; | |
| 2112 int used; | |
| 2113 lineoff_T loff; | |
| 2114 lineoff_T boff; | |
| 5661 | 2115 #ifdef FEAT_DIFF |
| 5653 | 2116 linenr_T old_topline = curwin->w_topline; |
| 5661 | 2117 #endif |
| 7 | 2118 |
| 2119 loff.lnum = boff.lnum = curwin->w_cursor.lnum; | |
| 2120 #ifdef FEAT_FOLDING | |
| 2121 (void)hasFolding(loff.lnum, &loff.lnum, &boff.lnum); | |
| 2122 #endif | |
| 2123 #ifdef FEAT_DIFF | |
| 2124 used = plines_nofill(loff.lnum); | |
| 2125 loff.fill = 0; | |
| 2126 boff.fill = 0; | |
| 2127 #else | |
| 2128 used = plines(loff.lnum); | |
| 2129 #endif | |
| 2130 topline = loff.lnum; | |
| 2131 while (topline > 1) | |
| 2132 { | |
| 2133 if (below <= above) /* add a line below the cursor first */ | |
| 2134 { | |
| 2135 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
| 2136 { | |
| 2137 botline_forw(&boff); | |
| 2138 used += boff.height; | |
| 2139 if (used > curwin->w_height) | |
| 2140 break; | |
| 2141 below += boff.height; | |
| 2142 } | |
| 2143 else | |
| 2144 { | |
| 2145 ++below; /* count a "~" line */ | |
| 2146 if (atend) | |
| 2147 ++used; | |
| 2148 } | |
| 2149 } | |
| 2150 | |
| 2151 if (below > above) /* add a line above the cursor */ | |
| 2152 { | |
| 2153 topline_back(&loff); | |
|
2082
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2154 if (loff.height == MAXCOL) |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2155 used = MAXCOL; |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2156 else |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2157 used += loff.height; |
| 7 | 2158 if (used > curwin->w_height) |
| 2159 break; | |
| 2160 above += loff.height; | |
| 2161 topline = loff.lnum; | |
| 2162 #ifdef FEAT_DIFF | |
| 2163 topfill = loff.fill; | |
| 2164 #endif | |
| 2165 } | |
| 2166 } | |
| 2167 #ifdef FEAT_FOLDING | |
| 2168 if (!hasFolding(topline, &curwin->w_topline, NULL)) | |
| 2169 #endif | |
| 2170 curwin->w_topline = topline; | |
| 2171 #ifdef FEAT_DIFF | |
| 2172 curwin->w_topfill = topfill; | |
| 5653 | 2173 if (old_topline > curwin->w_topline + curwin->w_height) |
| 2174 curwin->w_botfill = FALSE; | |
| 7 | 2175 check_topfill(curwin, FALSE); |
| 2176 #endif | |
| 2177 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2178 curwin->w_valid |= VALID_TOPLINE; | |
| 2179 } | |
| 2180 | |
| 2181 /* | |
| 2182 * Correct the cursor position so that it is in a part of the screen at least | |
| 2183 * 'so' lines from the top and bottom, if possible. | |
| 2184 * If not possible, put it at the same position as scroll_cursor_halfway(). | |
| 2185 * When called topline must be valid! | |
| 2186 */ | |
| 2187 void | |
| 2188 cursor_correct() | |
| 2189 { | |
| 2190 int above = 0; /* screen lines above topline */ | |
| 2191 linenr_T topline; | |
| 2192 int below = 0; /* screen lines below botline */ | |
| 2193 linenr_T botline; | |
| 2194 int above_wanted, below_wanted; | |
| 2195 linenr_T cln; /* Cursor Line Number */ | |
| 2196 int max_off; | |
| 2197 | |
| 2198 /* | |
| 2199 * How many lines we would like to have above/below the cursor depends on | |
| 2200 * whether the first/last line of the file is on screen. | |
| 2201 */ | |
| 2202 above_wanted = p_so; | |
| 2203 below_wanted = p_so; | |
| 2204 #ifdef FEAT_MOUSE | |
| 1121 | 2205 if (mouse_dragging > 0) |
| 7 | 2206 { |
| 2207 above_wanted = mouse_dragging - 1; | |
| 2208 below_wanted = mouse_dragging - 1; | |
| 2209 } | |
| 2210 #endif | |
| 2211 if (curwin->w_topline == 1) | |
| 2212 { | |
| 2213 above_wanted = 0; | |
| 2214 max_off = curwin->w_height / 2; | |
| 2215 if (below_wanted > max_off) | |
| 2216 below_wanted = max_off; | |
| 2217 } | |
| 2218 validate_botline(); | |
| 2219 if (curwin->w_botline == curbuf->b_ml.ml_line_count + 1 | |
| 2220 #ifdef FEAT_MOUSE | |
| 1121 | 2221 && mouse_dragging == 0 |
| 7 | 2222 #endif |
| 2223 ) | |
| 2224 { | |
| 2225 below_wanted = 0; | |
| 2226 max_off = (curwin->w_height - 1) / 2; | |
| 2227 if (above_wanted > max_off) | |
| 2228 above_wanted = max_off; | |
| 2229 } | |
| 2230 | |
| 2231 /* | |
| 2232 * If there are sufficient file-lines above and below the cursor, we can | |
| 2233 * return now. | |
| 2234 */ | |
| 2235 cln = curwin->w_cursor.lnum; | |
| 2236 if (cln >= curwin->w_topline + above_wanted | |
| 2237 && cln < curwin->w_botline - below_wanted | |
| 2238 #ifdef FEAT_FOLDING | |
| 2239 && !hasAnyFolding(curwin) | |
| 2240 #endif | |
| 2241 ) | |
| 2242 return; | |
| 2243 | |
| 2244 /* | |
| 2245 * Narrow down the area where the cursor can be put by taking lines from | |
| 2246 * the top and the bottom until: | |
| 2247 * - the desired context lines are found | |
| 2248 * - the lines from the top is past the lines from the bottom | |
| 2249 */ | |
| 2250 topline = curwin->w_topline; | |
| 2251 botline = curwin->w_botline - 1; | |
| 2252 #ifdef FEAT_DIFF | |
| 2253 /* count filler lines as context */ | |
| 2254 above = curwin->w_topfill; | |
| 2255 below = curwin->w_filler_rows; | |
| 2256 #endif | |
| 2257 while ((above < above_wanted || below < below_wanted) && topline < botline) | |
| 2258 { | |
| 2259 if (below < below_wanted && (below <= above || above >= above_wanted)) | |
| 2260 { | |
| 2261 #ifdef FEAT_FOLDING | |
| 2262 if (hasFolding(botline, &botline, NULL)) | |
| 2263 ++below; | |
| 2264 else | |
| 2265 #endif | |
| 2266 below += plines(botline); | |
| 2267 --botline; | |
| 2268 } | |
| 2269 if (above < above_wanted && (above < below || below >= below_wanted)) | |
| 2270 { | |
| 2271 #ifdef FEAT_FOLDING | |
| 2272 if (hasFolding(topline, NULL, &topline)) | |
| 2273 ++above; | |
| 2274 else | |
| 2275 #endif | |
| 2276 #ifndef FEAT_DIFF | |
| 2277 above += plines(topline); | |
| 2278 #else | |
| 2279 above += plines_nofill(topline); | |
| 2280 | |
| 2281 /* Count filler lines below this line as context. */ | |
| 2282 if (topline < botline) | |
| 2283 above += diff_check_fill(curwin, topline + 1); | |
| 2284 #endif | |
| 2285 ++topline; | |
| 2286 } | |
| 2287 } | |
| 2288 if (topline == botline || botline == 0) | |
| 2289 curwin->w_cursor.lnum = topline; | |
| 2290 else if (topline > botline) | |
| 2291 curwin->w_cursor.lnum = botline; | |
| 2292 else | |
| 2293 { | |
| 2294 if (cln < topline && curwin->w_topline > 1) | |
| 2295 { | |
| 2296 curwin->w_cursor.lnum = topline; | |
| 2297 curwin->w_valid &= | |
| 2298 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
| 2299 } | |
| 2300 if (cln > botline && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 2301 { | |
| 2302 curwin->w_cursor.lnum = botline; | |
| 2303 curwin->w_valid &= | |
| 2304 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
| 2305 } | |
| 2306 } | |
| 2307 curwin->w_valid |= VALID_TOPLINE; | |
| 2308 } | |
| 2309 | |
| 2310 static void get_scroll_overlap __ARGS((lineoff_T *lp, int dir)); | |
| 2311 | |
| 2312 /* | |
| 2313 * move screen 'count' pages up or down and update screen | |
| 2314 * | |
| 2315 * return FAIL for failure, OK otherwise | |
| 2316 */ | |
| 2317 int | |
| 2318 onepage(dir, count) | |
| 2319 int dir; | |
| 2320 long count; | |
| 2321 { | |
| 2322 long n; | |
| 2323 int retval = OK; | |
| 2324 lineoff_T loff; | |
| 2325 linenr_T old_topline = curwin->w_topline; | |
| 2326 | |
| 2327 if (curbuf->b_ml.ml_line_count == 1) /* nothing to do */ | |
| 2328 { | |
| 2329 beep_flush(); | |
| 2330 return FAIL; | |
| 2331 } | |
| 2332 | |
| 2333 for ( ; count > 0; --count) | |
| 2334 { | |
| 2335 validate_botline(); | |
| 2336 /* | |
| 2337 * It's an error to move a page up when the first line is already on | |
| 2338 * the screen. It's an error to move a page down when the last line | |
| 2339 * is on the screen and the topline is 'scrolloff' lines from the | |
| 2340 * last line. | |
| 2341 */ | |
| 2342 if (dir == FORWARD | |
| 2343 ? ((curwin->w_topline >= curbuf->b_ml.ml_line_count - p_so) | |
| 2344 && curwin->w_botline > curbuf->b_ml.ml_line_count) | |
| 2345 : (curwin->w_topline == 1 | |
| 2346 #ifdef FEAT_DIFF | |
| 2347 && curwin->w_topfill == | |
| 2348 diff_check_fill(curwin, curwin->w_topline) | |
| 2349 #endif | |
| 2350 )) | |
| 2351 { | |
| 2352 beep_flush(); | |
| 2353 retval = FAIL; | |
| 2354 break; | |
| 2355 } | |
| 2356 | |
| 2357 #ifdef FEAT_DIFF | |
| 2358 loff.fill = 0; | |
| 2359 #endif | |
| 2360 if (dir == FORWARD) | |
| 2361 { | |
| 164 | 2362 if (firstwin == lastwin && p_window > 0 && p_window < Rows - 1) |
| 7 | 2363 { |
| 164 | 2364 /* Vi compatible scrolling */ |
| 2365 if (p_window <= 2) | |
| 2366 ++curwin->w_topline; | |
| 2367 else | |
| 2368 curwin->w_topline += p_window - 2; | |
| 2369 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
| 2370 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
| 2371 curwin->w_cursor.lnum = curwin->w_topline; | |
| 2372 } | |
| 2373 else if (curwin->w_botline > curbuf->b_ml.ml_line_count) | |
| 2374 { | |
| 2375 /* at end of file */ | |
| 7 | 2376 curwin->w_topline = curbuf->b_ml.ml_line_count; |
| 2377 #ifdef FEAT_DIFF | |
| 2378 curwin->w_topfill = 0; | |
| 2379 #endif | |
| 2380 curwin->w_valid &= ~(VALID_WROW|VALID_CROW); | |
| 2381 } | |
| 2382 else | |
| 2383 { | |
| 2384 /* For the overlap, start with the line just below the window | |
| 2385 * and go upwards. */ | |
| 2386 loff.lnum = curwin->w_botline; | |
| 2387 #ifdef FEAT_DIFF | |
| 2388 loff.fill = diff_check_fill(curwin, loff.lnum) | |
| 2389 - curwin->w_filler_rows; | |
| 2390 #endif | |
| 2391 get_scroll_overlap(&loff, -1); | |
| 2392 curwin->w_topline = loff.lnum; | |
| 2393 #ifdef FEAT_DIFF | |
| 2394 curwin->w_topfill = loff.fill; | |
| 2395 check_topfill(curwin, FALSE); | |
| 2396 #endif | |
| 2397 curwin->w_cursor.lnum = curwin->w_topline; | |
| 2398 curwin->w_valid &= ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW| | |
| 2399 VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2400 } | |
| 2401 } | |
| 2402 else /* dir == BACKWARDS */ | |
| 2403 { | |
| 2404 #ifdef FEAT_DIFF | |
| 2405 if (curwin->w_topline == 1) | |
| 2406 { | |
| 2407 /* Include max number of filler lines */ | |
| 2408 max_topfill(); | |
| 2409 continue; | |
| 2410 } | |
| 2411 #endif | |
| 164 | 2412 if (firstwin == lastwin && p_window > 0 && p_window < Rows - 1) |
| 2413 { | |
| 2414 /* Vi compatible scrolling (sort of) */ | |
| 2415 if (p_window <= 2) | |
| 2416 --curwin->w_topline; | |
| 2417 else | |
| 2418 curwin->w_topline -= p_window - 2; | |
| 2419 if (curwin->w_topline < 1) | |
| 2420 curwin->w_topline = 1; | |
| 2421 curwin->w_cursor.lnum = curwin->w_topline + p_window - 1; | |
| 2422 if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count) | |
| 2423 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; | |
| 2424 continue; | |
| 2425 } | |
| 2426 | |
| 7 | 2427 /* Find the line at the top of the window that is going to be the |
| 2428 * line at the bottom of the window. Make sure this results in | |
| 2429 * the same line as before doing CTRL-F. */ | |
| 2430 loff.lnum = curwin->w_topline - 1; | |
| 2431 #ifdef FEAT_DIFF | |
| 2432 loff.fill = diff_check_fill(curwin, loff.lnum + 1) | |
| 2433 - curwin->w_topfill; | |
| 2434 #endif | |
| 2435 get_scroll_overlap(&loff, 1); | |
| 2436 | |
| 2437 if (loff.lnum >= curbuf->b_ml.ml_line_count) | |
| 2438 { | |
| 2439 loff.lnum = curbuf->b_ml.ml_line_count; | |
| 2440 #ifdef FEAT_DIFF | |
| 2441 loff.fill = 0; | |
| 2442 } | |
| 2443 else | |
| 2444 { | |
| 2445 botline_topline(&loff); | |
| 2446 #endif | |
| 2447 } | |
| 2448 curwin->w_cursor.lnum = loff.lnum; | |
| 2449 | |
| 2450 /* Find the line just above the new topline to get the right line | |
| 2451 * at the bottom of the window. */ | |
| 2452 n = 0; | |
| 2453 while (n <= curwin->w_height && loff.lnum >= 1) | |
| 2454 { | |
| 2455 topline_back(&loff); | |
|
2082
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2456 if (loff.height == MAXCOL) |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2457 n = MAXCOL; |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2458 else |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2459 n += loff.height; |
| 7 | 2460 } |
|
2082
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2461 if (loff.lnum < 1) /* at begin of file */ |
| 7 | 2462 { |
| 2463 curwin->w_topline = 1; | |
| 2464 #ifdef FEAT_DIFF | |
| 2465 max_topfill(); | |
| 2466 #endif | |
| 2467 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 2468 } | |
| 2469 else | |
| 2470 { | |
| 2471 /* Go two lines forward again. */ | |
| 2472 #ifdef FEAT_DIFF | |
| 2473 topline_botline(&loff); | |
| 2474 #endif | |
| 2475 botline_forw(&loff); | |
| 2476 botline_forw(&loff); | |
| 2477 #ifdef FEAT_DIFF | |
| 2478 botline_topline(&loff); | |
| 2479 #endif | |
| 2480 #ifdef FEAT_FOLDING | |
| 2481 /* We're at the wrong end of a fold now. */ | |
| 2482 (void)hasFolding(loff.lnum, &loff.lnum, NULL); | |
| 2483 #endif | |
| 2484 | |
| 2485 /* Always scroll at least one line. Avoid getting stuck on | |
| 2486 * very long lines. */ | |
| 2487 if (loff.lnum >= curwin->w_topline | |
| 2488 #ifdef FEAT_DIFF | |
| 2489 && (loff.lnum > curwin->w_topline | |
| 2490 || loff.fill >= curwin->w_topfill) | |
| 2491 #endif | |
| 2492 ) | |
| 2493 { | |
| 2494 #ifdef FEAT_DIFF | |
| 2495 /* First try using the maximum number of filler lines. If | |
| 2496 * that's not enough, backup one line. */ | |
| 2497 loff.fill = curwin->w_topfill; | |
| 2498 if (curwin->w_topfill < diff_check_fill(curwin, | |
| 2499 curwin->w_topline)) | |
| 2500 max_topfill(); | |
| 2501 if (curwin->w_topfill == loff.fill) | |
| 2502 #endif | |
| 2503 { | |
| 2504 --curwin->w_topline; | |
| 2505 #ifdef FEAT_DIFF | |
| 2506 curwin->w_topfill = 0; | |
| 2507 #endif | |
| 2508 } | |
| 2509 comp_botline(curwin); | |
| 2510 curwin->w_cursor.lnum = curwin->w_botline - 1; | |
| 5764 | 2511 curwin->w_valid &= |
| 2512 ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW|VALID_CROW); | |
| 7 | 2513 } |
| 2514 else | |
| 2515 { | |
| 2516 curwin->w_topline = loff.lnum; | |
| 2517 #ifdef FEAT_DIFF | |
| 2518 curwin->w_topfill = loff.fill; | |
| 2519 check_topfill(curwin, FALSE); | |
| 2520 #endif | |
| 2521 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 2522 } | |
| 2523 } | |
| 2524 } | |
| 2525 } | |
| 2526 #ifdef FEAT_FOLDING | |
| 2527 foldAdjustCursor(); | |
| 2528 #endif | |
| 2529 cursor_correct(); | |
| 161 | 2530 if (retval == OK) |
| 2531 beginline(BL_SOL | BL_FIX); | |
| 7 | 2532 curwin->w_valid &= ~(VALID_WCOL|VALID_WROW|VALID_VIRTCOL); |
| 2533 | |
| 2534 /* | |
| 2535 * Avoid the screen jumping up and down when 'scrolloff' is non-zero. | |
| 2536 * But make sure we scroll at least one line (happens with mix of long | |
| 2537 * wrapping lines and non-wrapping line). | |
| 2538 */ | |
| 2539 if (retval == OK && dir == FORWARD && check_top_offset()) | |
| 2540 { | |
| 2541 scroll_cursor_top(1, FALSE); | |
| 2542 if (curwin->w_topline <= old_topline | |
| 2543 && old_topline < curbuf->b_ml.ml_line_count) | |
| 2544 { | |
| 2545 curwin->w_topline = old_topline + 1; | |
| 2546 #ifdef FEAT_FOLDING | |
| 2547 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 2548 #endif | |
| 2549 } | |
| 2550 } | |
| 2551 | |
| 2552 redraw_later(VALID); | |
| 2553 return retval; | |
| 2554 } | |
| 2555 | |
| 2556 /* | |
| 2557 * Decide how much overlap to use for page-up or page-down scrolling. | |
| 2558 * This is symmetric, so that doing both keeps the same lines displayed. | |
| 2559 * Three lines are examined: | |
| 2560 * | |
| 2561 * before CTRL-F after CTRL-F / before CTRL-B | |
| 2562 * etc. l1 | |
| 2563 * l1 last but one line ------------ | |
| 2564 * l2 last text line l2 top text line | |
| 2565 * ------------- l3 second text line | |
| 2566 * l3 etc. | |
| 2567 */ | |
| 2568 static void | |
| 2569 get_scroll_overlap(lp, dir) | |
| 2570 lineoff_T *lp; | |
| 2571 int dir; | |
| 2572 { | |
| 2573 int h1, h2, h3, h4; | |
| 2574 int min_height = curwin->w_height - 2; | |
| 2575 lineoff_T loff0, loff1, loff2; | |
| 2576 | |
| 2577 #ifdef FEAT_DIFF | |
| 2578 if (lp->fill > 0) | |
| 2579 lp->height = 1; | |
| 2580 else | |
| 2581 lp->height = plines_nofill(lp->lnum); | |
| 2582 #else | |
| 2583 lp->height = plines(lp->lnum); | |
| 2584 #endif | |
| 2585 h1 = lp->height; | |
| 2586 if (h1 > min_height) | |
| 2587 return; /* no overlap */ | |
| 2588 | |
| 2589 loff0 = *lp; | |
| 2590 if (dir > 0) | |
| 2591 botline_forw(lp); | |
| 2592 else | |
| 2593 topline_back(lp); | |
| 2594 h2 = lp->height; | |
| 3968 | 2595 if (h2 == MAXCOL || h2 + h1 > min_height) |
| 7 | 2596 { |
| 2597 *lp = loff0; /* no overlap */ | |
| 2598 return; | |
| 2599 } | |
| 2600 | |
| 2601 loff1 = *lp; | |
| 2602 if (dir > 0) | |
| 2603 botline_forw(lp); | |
| 2604 else | |
| 2605 topline_back(lp); | |
| 2606 h3 = lp->height; | |
| 3968 | 2607 if (h3 == MAXCOL || h3 + h2 > min_height) |
| 7 | 2608 { |
| 2609 *lp = loff0; /* no overlap */ | |
| 2610 return; | |
| 2611 } | |
| 2612 | |
| 2613 loff2 = *lp; | |
| 2614 if (dir > 0) | |
| 2615 botline_forw(lp); | |
| 2616 else | |
| 2617 topline_back(lp); | |
| 2618 h4 = lp->height; | |
| 3968 | 2619 if (h4 == MAXCOL || h4 + h3 + h2 > min_height || h3 + h2 + h1 > min_height) |
| 7 | 2620 *lp = loff1; /* 1 line overlap */ |
| 2621 else | |
| 2622 *lp = loff2; /* 2 lines overlap */ | |
| 2623 return; | |
| 2624 } | |
| 2625 | |
| 2626 /* #define KEEP_SCREEN_LINE */ | |
| 2627 /* | |
| 2628 * Scroll 'scroll' lines up or down. | |
| 2629 */ | |
| 2630 void | |
| 2631 halfpage(flag, Prenum) | |
| 2632 int flag; | |
| 2633 linenr_T Prenum; | |
| 2634 { | |
| 2635 long scrolled = 0; | |
| 2636 int i; | |
| 2637 int n; | |
| 2638 int room; | |
| 2639 | |
| 2640 if (Prenum) | |
| 2641 curwin->w_p_scr = (Prenum > curwin->w_height) ? | |
| 2642 curwin->w_height : Prenum; | |
| 2643 n = (curwin->w_p_scr <= curwin->w_height) ? | |
| 2644 curwin->w_p_scr : curwin->w_height; | |
| 2645 | |
| 2646 validate_botline(); | |
| 2647 room = curwin->w_empty_rows; | |
| 2648 #ifdef FEAT_DIFF | |
| 2649 room += curwin->w_filler_rows; | |
| 2650 #endif | |
| 2651 if (flag) | |
| 2652 { | |
| 2653 /* | |
| 2654 * scroll the text up | |
| 2655 */ | |
| 2656 while (n > 0 && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 2657 { | |
| 2658 #ifdef FEAT_DIFF | |
| 2659 if (curwin->w_topfill > 0) | |
| 2660 { | |
| 2661 i = 1; | |
| 2662 if (--n < 0 && scrolled > 0) | |
| 2663 break; | |
| 2664 --curwin->w_topfill; | |
| 2665 } | |
| 2666 else | |
| 2667 #endif | |
| 2668 { | |
| 2669 #ifdef FEAT_DIFF | |
| 2670 i = plines_nofill(curwin->w_topline); | |
| 2671 #else | |
| 2672 i = plines(curwin->w_topline); | |
| 2673 #endif | |
| 2674 n -= i; | |
| 2675 if (n < 0 && scrolled > 0) | |
| 2676 break; | |
| 2677 #ifdef FEAT_FOLDING | |
| 2678 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
| 2679 #endif | |
| 2680 ++curwin->w_topline; | |
| 2681 #ifdef FEAT_DIFF | |
| 2682 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 2683 #endif | |
| 2684 | |
| 2685 #ifndef KEEP_SCREEN_LINE | |
| 2686 if (curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
| 2687 { | |
| 2688 ++curwin->w_cursor.lnum; | |
| 2689 curwin->w_valid &= | |
| 2690 ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
| 2691 } | |
| 2692 #endif | |
| 2693 } | |
| 2694 curwin->w_valid &= ~(VALID_CROW|VALID_WROW); | |
| 2695 scrolled += i; | |
| 2696 | |
| 2697 /* | |
| 2698 * Correct w_botline for changed w_topline. | |
| 2699 * Won't work when there are filler lines. | |
| 2700 */ | |
| 2701 #ifdef FEAT_DIFF | |
| 2702 if (curwin->w_p_diff) | |
| 2703 curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2704 else | |
| 2705 #endif | |
| 2706 { | |
| 2707 room += i; | |
| 2708 do | |
| 2709 { | |
| 2710 i = plines(curwin->w_botline); | |
| 2711 if (i > room) | |
| 2712 break; | |
| 2713 #ifdef FEAT_FOLDING | |
| 2714 (void)hasFolding(curwin->w_botline, NULL, | |
| 2715 &curwin->w_botline); | |
| 2716 #endif | |
| 2717 ++curwin->w_botline; | |
| 2718 room -= i; | |
| 2719 } while (curwin->w_botline <= curbuf->b_ml.ml_line_count); | |
| 2720 } | |
| 2721 } | |
| 2722 | |
| 2723 #ifndef KEEP_SCREEN_LINE | |
| 2724 /* | |
| 2725 * When hit bottom of the file: move cursor down. | |
| 2726 */ | |
| 2727 if (n > 0) | |
| 2728 { | |
| 2729 # ifdef FEAT_FOLDING | |
| 2730 if (hasAnyFolding(curwin)) | |
| 2731 { | |
| 2732 while (--n >= 0 | |
| 2733 && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
| 2734 { | |
| 2735 (void)hasFolding(curwin->w_cursor.lnum, NULL, | |
| 2736 &curwin->w_cursor.lnum); | |
| 2737 ++curwin->w_cursor.lnum; | |
| 2738 } | |
| 2739 } | |
| 2740 else | |
| 2741 # endif | |
| 2742 curwin->w_cursor.lnum += n; | |
| 2743 check_cursor_lnum(); | |
| 2744 } | |
| 2745 #else | |
| 2746 /* try to put the cursor in the same screen line */ | |
| 2747 while ((curwin->w_cursor.lnum < curwin->w_topline || scrolled > 0) | |
| 2748 && curwin->w_cursor.lnum < curwin->w_botline - 1) | |
| 2749 { | |
| 2750 scrolled -= plines(curwin->w_cursor.lnum); | |
| 2751 if (scrolled < 0 && curwin->w_cursor.lnum >= curwin->w_topline) | |
| 2752 break; | |
| 2753 # ifdef FEAT_FOLDING | |
| 2754 (void)hasFolding(curwin->w_cursor.lnum, NULL, | |
| 2755 &curwin->w_cursor.lnum); | |
| 2756 # endif | |
| 2757 ++curwin->w_cursor.lnum; | |
| 2758 } | |
| 2759 #endif | |
| 2760 } | |
| 2761 else | |
| 2762 { | |
| 2763 /* | |
| 2764 * scroll the text down | |
| 2765 */ | |
| 2766 while (n > 0 && curwin->w_topline > 1) | |
| 2767 { | |
| 2768 #ifdef FEAT_DIFF | |
| 2769 if (curwin->w_topfill < diff_check_fill(curwin, curwin->w_topline)) | |
| 2770 { | |
| 2771 i = 1; | |
| 2772 if (--n < 0 && scrolled > 0) | |
| 2773 break; | |
| 2774 ++curwin->w_topfill; | |
| 2775 } | |
| 2776 else | |
| 2777 #endif | |
| 2778 { | |
| 2779 #ifdef FEAT_DIFF | |
| 2780 i = plines_nofill(curwin->w_topline - 1); | |
| 2781 #else | |
| 2782 i = plines(curwin->w_topline - 1); | |
| 2783 #endif | |
| 2784 n -= i; | |
| 2785 if (n < 0 && scrolled > 0) | |
| 2786 break; | |
| 2787 --curwin->w_topline; | |
| 2788 #ifdef FEAT_FOLDING | |
| 2789 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 2790 #endif | |
| 2791 #ifdef FEAT_DIFF | |
| 2792 curwin->w_topfill = 0; | |
| 2793 #endif | |
| 2794 } | |
| 2795 curwin->w_valid &= ~(VALID_CROW|VALID_WROW| | |
| 2796 VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2797 scrolled += i; | |
| 2798 #ifndef KEEP_SCREEN_LINE | |
| 2799 if (curwin->w_cursor.lnum > 1) | |
| 2800 { | |
| 2801 --curwin->w_cursor.lnum; | |
| 2802 curwin->w_valid &= ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
| 2803 } | |
| 2804 #endif | |
| 2805 } | |
| 2806 #ifndef KEEP_SCREEN_LINE | |
| 2807 /* | |
| 2808 * When hit top of the file: move cursor up. | |
| 2809 */ | |
| 2810 if (n > 0) | |
| 2811 { | |
| 2812 if (curwin->w_cursor.lnum <= (linenr_T)n) | |
| 2813 curwin->w_cursor.lnum = 1; | |
| 2814 else | |
| 2815 # ifdef FEAT_FOLDING | |
| 2816 if (hasAnyFolding(curwin)) | |
| 2817 { | |
| 2818 while (--n >= 0 && curwin->w_cursor.lnum > 1) | |
| 2819 { | |
| 2820 --curwin->w_cursor.lnum; | |
| 2821 (void)hasFolding(curwin->w_cursor.lnum, | |
| 2822 &curwin->w_cursor.lnum, NULL); | |
| 2823 } | |
| 2824 } | |
| 2825 else | |
| 2826 # endif | |
| 2827 curwin->w_cursor.lnum -= n; | |
| 2828 } | |
| 2829 #else | |
| 2830 /* try to put the cursor in the same screen line */ | |
| 2831 scrolled += n; /* move cursor when topline is 1 */ | |
| 2832 while (curwin->w_cursor.lnum > curwin->w_topline | |
| 2833 && (scrolled > 0 || curwin->w_cursor.lnum >= curwin->w_botline)) | |
| 2834 { | |
| 2835 scrolled -= plines(curwin->w_cursor.lnum - 1); | |
| 2836 if (scrolled < 0 && curwin->w_cursor.lnum < curwin->w_botline) | |
| 2837 break; | |
| 2838 --curwin->w_cursor.lnum; | |
| 2839 # ifdef FEAT_FOLDING | |
| 2840 foldAdjustCursor(); | |
| 2841 # endif | |
| 2842 } | |
| 2843 #endif | |
| 2844 } | |
| 2845 # ifdef FEAT_FOLDING | |
| 2846 /* Move cursor to first line of closed fold. */ | |
| 2847 foldAdjustCursor(); | |
| 2848 # endif | |
| 2849 #ifdef FEAT_DIFF | |
| 2850 check_topfill(curwin, !flag); | |
| 2851 #endif | |
| 2852 cursor_correct(); | |
| 2853 beginline(BL_SOL | BL_FIX); | |
| 2854 redraw_later(VALID); | |
| 2855 } | |
|
2250
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2856 |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2857 #if defined(FEAT_CURSORBIND) || defined(PROTO) |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2858 void |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2859 do_check_cursorbind() |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2860 { |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2861 linenr_T line = curwin->w_cursor.lnum; |
| 3415 | 2862 colnr_T col = curwin->w_cursor.col; |
| 2863 # ifdef FEAT_VIRTUALEDIT | |
| 2864 colnr_T coladd = curwin->w_cursor.coladd; | |
| 2865 # endif | |
| 3433 | 2866 colnr_T curswant = curwin->w_curswant; |
| 2867 int set_curswant = curwin->w_set_curswant; | |
|
2250
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2868 win_T *old_curwin = curwin; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2869 buf_T *old_curbuf = curbuf; |
| 2693 | 2870 int restart_edit_save; |
|
2250
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2871 int old_VIsual_select = VIsual_select; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2872 int old_VIsual_active = VIsual_active; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2873 |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2874 /* |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2875 * loop through the cursorbound windows |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2876 */ |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2877 VIsual_select = VIsual_active = 0; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2878 for (curwin = firstwin; curwin; curwin = curwin->w_next) |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2879 { |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2880 curbuf = curwin->w_buffer; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2881 /* skip original window and windows with 'noscrollbind' */ |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2882 if (curwin != old_curwin && curwin->w_p_crb) |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2883 { |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2884 # ifdef FEAT_DIFF |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2885 if (curwin->w_p_diff) |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2886 curwin->w_cursor.lnum |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2887 = diff_get_corresponding_line(old_curbuf, |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2888 line, |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2889 curbuf, |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2890 curwin->w_cursor.lnum); |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2891 else |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2892 # endif |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2893 curwin->w_cursor.lnum = line; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2894 curwin->w_cursor.col = col; |
| 3415 | 2895 # ifdef FEAT_VIRTUALEDIT |
| 2896 curwin->w_cursor.coladd = coladd; | |
| 2897 # endif | |
| 3433 | 2898 curwin->w_curswant = curswant; |
| 2899 curwin->w_set_curswant = set_curswant; | |
|
2250
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2900 |
| 2693 | 2901 /* Make sure the cursor is in a valid position. Temporarily set |
| 2902 * "restart_edit" to allow the cursor to be beyond the EOL. */ | |
| 2903 restart_edit_save = restart_edit; | |
| 2904 restart_edit = TRUE; | |
|
2250
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2905 check_cursor(); |
| 2693 | 2906 restart_edit = restart_edit_save; |
|
2250
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2907 # ifdef FEAT_MBYTE |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2908 /* Correct cursor for multi-byte character. */ |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2909 if (has_mbyte) |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2910 mb_adjust_cursor(); |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2911 # endif |
| 2688 | 2912 redraw_later(VALID); |
|
2250
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2913 |
| 2688 | 2914 /* Only scroll when 'scrollbind' hasn't done this. */ |
| 2915 if (!curwin->w_p_scb) | |
| 2916 update_topline(); | |
|
2250
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2917 # ifdef FEAT_WINDOWS |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2918 curwin->w_redr_status = TRUE; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2919 # endif |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2920 } |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2921 } |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2922 |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2923 /* |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2924 * reset current-window |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2925 */ |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2926 VIsual_select = old_VIsual_select; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2927 VIsual_active = old_VIsual_active; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2928 curwin = old_curwin; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2929 curbuf = old_curbuf; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2930 } |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2931 #endif /* FEAT_CURSORBIND */ |