Mercurial > vim
annotate src/move.c @ 8939:36cb3aff8c1c v7.4.1755
commit https://github.com/vim/vim/commit/517ffbee0d5b7b46320726faaa330b61f54e867c
Author: Bram Moolenaar <Bram@vim.org>
Date: Wed Apr 20 14:59:29 2016 +0200
patch 7.4.1755
Problem: When using getreg() on a non-existing register a NULL list is
returned. (Bjorn Linse)
Solution: Allocate an empty list. Add a test.
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Wed, 20 Apr 2016 15:00:06 +0200 |
| parents | 24b43dd167eb |
| children | fd9727ae3c49 |
| 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 | |
|
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22 static void comp_botline(win_T *wp); |
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37c929c4a073
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23 static void redraw_for_cursorline(win_T *wp); |
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24 static int scrolljump_value(void); |
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commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
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25 static int check_top_offset(void); |
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26 static void curs_rows(win_T *wp); |
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27 static void validate_cheight(void); |
| 7 | 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 | |
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38 static void topline_back(lineoff_T *lp); |
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39 static void botline_forw(lineoff_T *lp); |
| 7 | 40 #ifdef FEAT_DIFF |
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41 static void botline_topline(lineoff_T *lp); |
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commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
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42 static void topline_botline(lineoff_T *lp); |
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43 static void max_topfill(void); |
| 7 | 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 | |
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51 comp_botline(win_T *wp) |
| 7 | 52 { |
| 53 int n; | |
| 54 linenr_T lnum; | |
| 55 int done; | |
| 56 #ifdef FEAT_FOLDING | |
| 57 linenr_T last; | |
| 58 int folded; | |
| 59 #endif | |
| 60 | |
| 61 /* | |
| 62 * If w_cline_row is valid, start there. | |
| 63 * Otherwise have to start at w_topline. | |
| 64 */ | |
| 65 check_cursor_moved(wp); | |
| 66 if (wp->w_valid & VALID_CROW) | |
| 67 { | |
| 68 lnum = wp->w_cursor.lnum; | |
| 69 done = wp->w_cline_row; | |
| 70 } | |
| 71 else | |
| 72 { | |
| 73 lnum = wp->w_topline; | |
| 74 done = 0; | |
| 75 } | |
| 76 | |
| 77 for ( ; lnum <= wp->w_buffer->b_ml.ml_line_count; ++lnum) | |
| 78 { | |
| 79 #ifdef FEAT_FOLDING | |
| 80 last = lnum; | |
| 81 folded = FALSE; | |
| 82 if (hasFoldingWin(wp, lnum, NULL, &last, TRUE, NULL)) | |
| 83 { | |
| 84 n = 1; | |
| 85 folded = TRUE; | |
| 86 } | |
| 87 else | |
| 88 #endif | |
| 89 #ifdef FEAT_DIFF | |
| 90 if (lnum == wp->w_topline) | |
| 91 n = plines_win_nofill(wp, lnum, TRUE) + wp->w_topfill; | |
| 92 else | |
| 93 #endif | |
| 94 n = plines_win(wp, lnum, TRUE); | |
| 95 if ( | |
| 96 #ifdef FEAT_FOLDING | |
| 97 lnum <= wp->w_cursor.lnum && last >= wp->w_cursor.lnum | |
| 98 #else | |
| 99 lnum == wp->w_cursor.lnum | |
| 100 #endif | |
| 101 ) | |
| 102 { | |
| 103 wp->w_cline_row = done; | |
| 104 wp->w_cline_height = n; | |
| 105 #ifdef FEAT_FOLDING | |
| 106 wp->w_cline_folded = folded; | |
| 107 #endif | |
| 5764 | 108 redraw_for_cursorline(wp); |
| 7 | 109 wp->w_valid |= (VALID_CROW|VALID_CHEIGHT); |
| 110 } | |
| 111 if (done + n > wp->w_height) | |
| 112 break; | |
| 113 done += n; | |
| 114 #ifdef FEAT_FOLDING | |
| 115 lnum = last; | |
| 116 #endif | |
| 117 } | |
| 118 | |
| 119 /* wp->w_botline is the line that is just below the window */ | |
| 120 wp->w_botline = lnum; | |
| 121 wp->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 122 | |
| 123 set_empty_rows(wp, done); | |
| 124 } | |
| 125 | |
| 126 /* | |
| 5764 | 127 * Redraw when w_cline_row changes and 'relativenumber' or 'cursorline' is |
| 128 * set. | |
| 129 */ | |
| 130 static void | |
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131 redraw_for_cursorline(win_T *wp) |
| 5764 | 132 { |
| 133 if ((wp->w_p_rnu | |
| 134 #ifdef FEAT_SYN_HL | |
| 135 || wp->w_p_cul | |
| 136 #endif | |
| 137 ) | |
| 138 && (wp->w_valid & VALID_CROW) == 0 | |
| 139 # ifdef FEAT_INS_EXPAND | |
| 140 && !pum_visible() | |
| 141 # endif | |
| 142 ) | |
| 143 redraw_win_later(wp, SOME_VALID); | |
| 144 } | |
| 145 | |
| 146 /* | |
| 7 | 147 * Update curwin->w_topline and redraw if necessary. |
| 148 * Used to update the screen before printing a message. | |
| 149 */ | |
| 150 void | |
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151 update_topline_redraw(void) |
| 7 | 152 { |
| 153 update_topline(); | |
| 154 if (must_redraw) | |
| 155 update_screen(0); | |
| 156 } | |
| 157 | |
| 158 /* | |
| 159 * Update curwin->w_topline to move the cursor onto the screen. | |
| 160 */ | |
| 161 void | |
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changeset
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162 update_topline(void) |
| 7 | 163 { |
| 164 long line_count; | |
| 165 int halfheight; | |
| 166 int n; | |
| 167 linenr_T old_topline; | |
| 168 #ifdef FEAT_DIFF | |
| 169 int old_topfill; | |
| 170 #endif | |
| 171 #ifdef FEAT_FOLDING | |
| 172 linenr_T lnum; | |
| 173 #endif | |
| 174 int check_topline = FALSE; | |
| 175 int check_botline = FALSE; | |
| 176 #ifdef FEAT_MOUSE | |
| 177 int save_so = p_so; | |
| 178 #endif | |
| 179 | |
| 180 if (!screen_valid(TRUE)) | |
| 181 return; | |
| 182 | |
| 6247 | 183 /* If the window height is zero just use the cursor line. */ |
| 184 if (curwin->w_height == 0) | |
| 185 { | |
| 186 curwin->w_topline = curwin->w_cursor.lnum; | |
| 187 curwin->w_botline = curwin->w_topline; | |
| 188 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 189 #ifdef FEAT_SCROLLBIND | |
| 190 curwin->w_scbind_pos = 1; | |
| 191 #endif | |
| 192 return; | |
| 193 } | |
| 194 | |
| 7 | 195 check_cursor_moved(curwin); |
| 196 if (curwin->w_valid & VALID_TOPLINE) | |
| 197 return; | |
| 198 | |
| 199 #ifdef FEAT_MOUSE | |
| 200 /* When dragging with the mouse, don't scroll that quickly */ | |
| 1121 | 201 if (mouse_dragging > 0) |
| 7 | 202 p_so = mouse_dragging - 1; |
| 203 #endif | |
| 204 | |
| 205 old_topline = curwin->w_topline; | |
| 206 #ifdef FEAT_DIFF | |
| 207 old_topfill = curwin->w_topfill; | |
| 208 #endif | |
| 209 | |
| 210 /* | |
| 211 * If the buffer is empty, always set topline to 1. | |
| 212 */ | |
| 213 if (bufempty()) /* special case - file is empty */ | |
| 214 { | |
| 215 if (curwin->w_topline != 1) | |
| 216 redraw_later(NOT_VALID); | |
| 217 curwin->w_topline = 1; | |
| 218 curwin->w_botline = 2; | |
| 219 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 220 #ifdef FEAT_SCROLLBIND | |
| 221 curwin->w_scbind_pos = 1; | |
| 222 #endif | |
| 223 } | |
| 224 | |
| 225 /* | |
| 226 * If the cursor is above or near the top of the window, scroll the window | |
| 227 * to show the line the cursor is in, with 'scrolloff' context. | |
| 228 */ | |
| 229 else | |
| 230 { | |
| 231 if (curwin->w_topline > 1) | |
| 232 { | |
| 233 /* If the cursor is above topline, scrolling is always needed. | |
| 234 * If the cursor is far below topline and there is no folding, | |
| 235 * scrolling down is never needed. */ | |
| 236 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 237 check_topline = TRUE; | |
| 238 else if (check_top_offset()) | |
| 239 check_topline = TRUE; | |
| 240 } | |
| 241 #ifdef FEAT_DIFF | |
| 242 /* Check if there are more filler lines than allowed. */ | |
| 243 if (!check_topline && curwin->w_topfill > diff_check_fill(curwin, | |
| 244 curwin->w_topline)) | |
| 245 check_topline = TRUE; | |
| 246 #endif | |
| 247 | |
| 248 if (check_topline) | |
| 249 { | |
| 250 halfheight = curwin->w_height / 2 - 1; | |
| 251 if (halfheight < 2) | |
| 252 halfheight = 2; | |
| 253 | |
| 254 #ifdef FEAT_FOLDING | |
| 255 if (hasAnyFolding(curwin)) | |
| 256 { | |
| 257 /* Count the number of logical lines between the cursor and | |
| 258 * topline + p_so (approximation of how much will be | |
| 259 * scrolled). */ | |
| 260 n = 0; | |
| 261 for (lnum = curwin->w_cursor.lnum; | |
| 262 lnum < curwin->w_topline + p_so; ++lnum) | |
| 263 { | |
| 264 ++n; | |
| 265 /* stop at end of file or when we know we are far off */ | |
| 266 if (lnum >= curbuf->b_ml.ml_line_count || n >= halfheight) | |
| 267 break; | |
| 268 (void)hasFolding(lnum, NULL, &lnum); | |
| 269 } | |
| 270 } | |
| 271 else | |
| 272 #endif | |
| 273 n = curwin->w_topline + p_so - curwin->w_cursor.lnum; | |
| 274 | |
| 275 /* If we weren't very close to begin with, we scroll to put the | |
| 276 * cursor in the middle of the window. Otherwise put the cursor | |
| 277 * near the top of the window. */ | |
| 278 if (n >= halfheight) | |
| 279 scroll_cursor_halfway(FALSE); | |
| 280 else | |
| 281 { | |
| 532 | 282 scroll_cursor_top(scrolljump_value(), FALSE); |
| 7 | 283 check_botline = TRUE; |
| 284 } | |
| 285 } | |
| 286 | |
| 287 else | |
| 288 { | |
| 289 #ifdef FEAT_FOLDING | |
| 290 /* Make sure topline is the first line of a fold. */ | |
| 291 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 292 #endif | |
| 293 check_botline = TRUE; | |
| 294 } | |
| 295 } | |
| 296 | |
| 297 /* | |
| 298 * If the cursor is below the bottom of the window, scroll the window | |
| 299 * to put the cursor on the window. | |
| 300 * When w_botline is invalid, recompute it first, to avoid a redraw later. | |
| 301 * If w_botline was approximated, we might need a redraw later in a few | |
| 302 * cases, but we don't want to spend (a lot of) time recomputing w_botline | |
| 303 * for every small change. | |
| 304 */ | |
| 305 if (check_botline) | |
| 306 { | |
| 307 if (!(curwin->w_valid & VALID_BOTLINE_AP)) | |
| 308 validate_botline(); | |
| 309 | |
| 310 if (curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 311 { | |
| 1744 | 312 if (curwin->w_cursor.lnum < curwin->w_botline) |
| 313 { | |
| 314 if (((long)curwin->w_cursor.lnum | |
| 7 | 315 >= (long)curwin->w_botline - p_so |
| 316 #ifdef FEAT_FOLDING | |
| 317 || hasAnyFolding(curwin) | |
| 318 #endif | |
| 319 )) | |
| 1744 | 320 { |
| 7 | 321 lineoff_T loff; |
| 322 | |
| 1744 | 323 /* Cursor is (a few lines) above botline, check if there are |
| 324 * 'scrolloff' window lines below the cursor. If not, need to | |
| 325 * scroll. */ | |
| 7 | 326 n = curwin->w_empty_rows; |
| 327 loff.lnum = curwin->w_cursor.lnum; | |
| 328 #ifdef FEAT_FOLDING | |
| 329 /* In a fold go to its last line. */ | |
| 330 (void)hasFolding(loff.lnum, NULL, &loff.lnum); | |
| 331 #endif | |
| 332 #ifdef FEAT_DIFF | |
| 333 loff.fill = 0; | |
| 334 n += curwin->w_filler_rows; | |
| 335 #endif | |
| 336 loff.height = 0; | |
| 337 while (loff.lnum < curwin->w_botline | |
| 338 #ifdef FEAT_DIFF | |
| 339 && (loff.lnum + 1 < curwin->w_botline || loff.fill == 0) | |
| 340 #endif | |
| 341 ) | |
| 342 { | |
| 343 n += loff.height; | |
| 344 if (n >= p_so) | |
| 345 break; | |
| 346 botline_forw(&loff); | |
| 347 } | |
| 348 if (n >= p_so) | |
| 349 /* sufficient context, no need to scroll */ | |
| 350 check_botline = FALSE; | |
| 1744 | 351 } |
| 352 else | |
| 353 /* sufficient context, no need to scroll */ | |
| 354 check_botline = FALSE; | |
| 7 | 355 } |
| 356 if (check_botline) | |
| 357 { | |
| 358 #ifdef FEAT_FOLDING | |
| 359 if (hasAnyFolding(curwin)) | |
| 360 { | |
| 361 /* Count the number of logical lines between the cursor and | |
| 362 * botline - p_so (approximation of how much will be | |
| 363 * scrolled). */ | |
| 364 line_count = 0; | |
| 365 for (lnum = curwin->w_cursor.lnum; | |
| 366 lnum >= curwin->w_botline - p_so; --lnum) | |
| 367 { | |
| 368 ++line_count; | |
| 369 /* stop at end of file or when we know we are far off */ | |
| 370 if (lnum <= 0 || line_count > curwin->w_height + 1) | |
| 371 break; | |
| 372 (void)hasFolding(lnum, &lnum, NULL); | |
| 373 } | |
| 374 } | |
| 375 else | |
| 376 #endif | |
| 377 line_count = curwin->w_cursor.lnum - curwin->w_botline | |
| 378 + 1 + p_so; | |
| 379 if (line_count <= curwin->w_height + 1) | |
| 532 | 380 scroll_cursor_bot(scrolljump_value(), FALSE); |
| 7 | 381 else |
| 382 scroll_cursor_halfway(FALSE); | |
| 383 } | |
| 384 } | |
| 385 } | |
| 386 curwin->w_valid |= VALID_TOPLINE; | |
| 387 | |
| 388 /* | |
| 389 * Need to redraw when topline changed. | |
| 390 */ | |
| 391 if (curwin->w_topline != old_topline | |
| 392 #ifdef FEAT_DIFF | |
| 393 || curwin->w_topfill != old_topfill | |
| 394 #endif | |
| 395 ) | |
| 396 { | |
| 3318 | 397 dollar_vcol = -1; |
| 740 | 398 if (curwin->w_skipcol != 0) |
| 7 | 399 { |
| 400 curwin->w_skipcol = 0; | |
| 401 redraw_later(NOT_VALID); | |
| 402 } | |
| 403 else | |
| 404 redraw_later(VALID); | |
| 405 /* May need to set w_skipcol when cursor in w_topline. */ | |
| 406 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 407 validate_cursor(); | |
| 408 } | |
| 409 | |
| 410 #ifdef FEAT_MOUSE | |
| 411 p_so = save_so; | |
| 412 #endif | |
| 413 } | |
| 414 | |
| 415 /* | |
| 532 | 416 * Return the scrolljump value to use for the current window. |
| 417 * When 'scrolljump' is positive use it as-is. | |
| 418 * When 'scrolljump' is negative use it as a percentage of the window height. | |
| 419 */ | |
| 420 static int | |
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parents:
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diff
changeset
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421 scrolljump_value(void) |
| 532 | 422 { |
| 423 if (p_sj >= 0) | |
| 424 return (int)p_sj; | |
| 425 return (curwin->w_height * -p_sj) / 100; | |
| 426 } | |
| 427 | |
| 428 /* | |
| 7 | 429 * Return TRUE when there are not 'scrolloff' lines above the cursor for the |
| 430 * current window. | |
| 431 */ | |
| 432 static int | |
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parents:
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diff
changeset
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433 check_top_offset(void) |
| 7 | 434 { |
| 435 lineoff_T loff; | |
| 436 int n; | |
| 437 | |
| 438 if (curwin->w_cursor.lnum < curwin->w_topline + p_so | |
| 439 #ifdef FEAT_FOLDING | |
| 440 || hasAnyFolding(curwin) | |
| 441 #endif | |
| 442 ) | |
| 443 { | |
| 444 loff.lnum = curwin->w_cursor.lnum; | |
| 445 #ifdef FEAT_DIFF | |
| 446 loff.fill = 0; | |
| 447 n = curwin->w_topfill; /* always have this context */ | |
| 448 #else | |
| 449 n = 0; | |
| 450 #endif | |
| 451 /* Count the visible screen lines above the cursor line. */ | |
| 452 while (n < p_so) | |
| 453 { | |
| 454 topline_back(&loff); | |
| 455 /* Stop when included a line above the window. */ | |
| 456 if (loff.lnum < curwin->w_topline | |
| 457 #ifdef FEAT_DIFF | |
| 458 || (loff.lnum == curwin->w_topline && loff.fill > 0) | |
| 459 #endif | |
| 460 ) | |
| 461 break; | |
| 462 n += loff.height; | |
| 463 } | |
| 464 if (n < p_so) | |
| 465 return TRUE; | |
| 466 } | |
| 467 return FALSE; | |
| 468 } | |
| 469 | |
| 470 void | |
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parents:
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diff
changeset
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471 update_curswant(void) |
| 7 | 472 { |
| 473 if (curwin->w_set_curswant) | |
| 474 { | |
| 475 validate_virtcol(); | |
| 476 curwin->w_curswant = curwin->w_virtcol; | |
| 477 curwin->w_set_curswant = FALSE; | |
| 478 } | |
| 479 } | |
| 480 | |
| 481 /* | |
| 482 * Check if the cursor has moved. Set the w_valid flag accordingly. | |
| 483 */ | |
| 484 void | |
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commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
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parents:
7803
diff
changeset
|
485 check_cursor_moved(win_T *wp) |
| 7 | 486 { |
| 487 if (wp->w_cursor.lnum != wp->w_valid_cursor.lnum) | |
| 488 { | |
| 489 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 490 |VALID_CHEIGHT|VALID_CROW|VALID_TOPLINE); | |
| 491 wp->w_valid_cursor = wp->w_cursor; | |
| 492 wp->w_valid_leftcol = wp->w_leftcol; | |
| 493 } | |
| 494 else if (wp->w_cursor.col != wp->w_valid_cursor.col | |
| 495 || wp->w_leftcol != wp->w_valid_leftcol | |
| 496 #ifdef FEAT_VIRTUALEDIT | |
| 497 || wp->w_cursor.coladd != wp->w_valid_cursor.coladd | |
| 498 #endif | |
| 499 ) | |
| 500 { | |
| 501 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL); | |
| 502 wp->w_valid_cursor.col = wp->w_cursor.col; | |
| 503 wp->w_valid_leftcol = wp->w_leftcol; | |
| 504 #ifdef FEAT_VIRTUALEDIT | |
| 505 wp->w_valid_cursor.coladd = wp->w_cursor.coladd; | |
| 506 #endif | |
| 507 } | |
| 508 } | |
| 509 | |
| 510 /* | |
| 511 * Call this function when some window settings have changed, which require | |
| 512 * the cursor position, botline and topline to be recomputed and the window to | |
| 513 * be redrawn. E.g, when changing the 'wrap' option or folding. | |
| 514 */ | |
| 515 void | |
|
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516 changed_window_setting(void) |
| 7 | 517 { |
| 518 changed_window_setting_win(curwin); | |
| 519 } | |
| 520 | |
| 521 void | |
|
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522 changed_window_setting_win(win_T *wp) |
| 7 | 523 { |
| 524 wp->w_lines_valid = 0; | |
| 525 changed_line_abv_curs_win(wp); | |
| 526 wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP|VALID_TOPLINE); | |
| 527 redraw_win_later(wp, NOT_VALID); | |
| 528 } | |
| 529 | |
| 530 /* | |
| 531 * Set wp->w_topline to a certain number. | |
| 532 */ | |
| 533 void | |
|
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534 set_topline(win_T *wp, linenr_T lnum) |
| 7 | 535 { |
| 536 #ifdef FEAT_FOLDING | |
| 537 /* go to first of folded lines */ | |
| 538 (void)hasFoldingWin(wp, lnum, &lnum, NULL, TRUE, NULL); | |
| 539 #endif | |
| 540 /* Approximate the value of w_botline */ | |
| 541 wp->w_botline += lnum - wp->w_topline; | |
| 542 wp->w_topline = lnum; | |
| 1744 | 543 #ifdef FEAT_AUTOCMD |
| 544 wp->w_topline_was_set = TRUE; | |
| 545 #endif | |
| 7 | 546 #ifdef FEAT_DIFF |
| 547 wp->w_topfill = 0; | |
| 548 #endif | |
| 549 wp->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_TOPLINE); | |
| 550 /* Don't set VALID_TOPLINE here, 'scrolloff' needs to be checked. */ | |
| 551 redraw_later(VALID); | |
| 552 } | |
| 553 | |
| 554 /* | |
| 555 * Call this function when the length of the cursor line (in screen | |
| 556 * characters) has changed, and the change is before the cursor. | |
| 557 * Need to take care of w_botline separately! | |
| 558 */ | |
| 559 void | |
|
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560 changed_cline_bef_curs(void) |
| 7 | 561 { |
| 562 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 563 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 564 } | |
| 565 | |
| 566 void | |
|
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|
567 changed_cline_bef_curs_win(win_T *wp) |
| 7 | 568 { |
| 569 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 570 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 571 } | |
| 572 | |
| 573 /* | |
| 574 * Call this function when the length of a line (in screen characters) above | |
| 575 * the cursor have changed. | |
| 576 * Need to take care of w_botline separately! | |
| 577 */ | |
| 578 void | |
|
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579 changed_line_abv_curs(void) |
| 7 | 580 { |
| 581 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
| 582 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 583 } | |
| 584 | |
| 585 void | |
|
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|
586 changed_line_abv_curs_win(win_T *wp) |
| 7 | 587 { |
| 588 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
| 589 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 590 } | |
| 591 | |
| 592 /* | |
| 593 * Make sure the value of curwin->w_botline is valid. | |
| 594 */ | |
| 595 void | |
|
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596 validate_botline(void) |
| 7 | 597 { |
| 598 if (!(curwin->w_valid & VALID_BOTLINE)) | |
| 599 comp_botline(curwin); | |
| 600 } | |
| 601 | |
| 602 /* | |
| 603 * Mark curwin->w_botline as invalid (because of some change in the buffer). | |
| 604 */ | |
| 605 void | |
|
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606 invalidate_botline(void) |
| 7 | 607 { |
| 608 curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 609 } | |
| 610 | |
| 611 void | |
|
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612 invalidate_botline_win(win_T *wp) |
| 7 | 613 { |
| 614 wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 615 } | |
| 616 | |
| 617 void | |
|
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618 approximate_botline_win( |
|
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619 win_T *wp) |
| 7 | 620 { |
| 621 wp->w_valid &= ~VALID_BOTLINE; | |
| 622 } | |
| 623 | |
| 624 /* | |
| 625 * Return TRUE if curwin->w_wrow and curwin->w_wcol are valid. | |
| 626 */ | |
| 627 int | |
|
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628 cursor_valid(void) |
| 7 | 629 { |
| 630 check_cursor_moved(curwin); | |
| 631 return ((curwin->w_valid & (VALID_WROW|VALID_WCOL)) == | |
| 632 (VALID_WROW|VALID_WCOL)); | |
| 633 } | |
| 634 | |
| 635 /* | |
| 636 * Validate cursor position. Makes sure w_wrow and w_wcol are valid. | |
| 637 * w_topline must be valid, you may need to call update_topline() first! | |
| 638 */ | |
| 639 void | |
|
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640 validate_cursor(void) |
| 7 | 641 { |
| 642 check_cursor_moved(curwin); | |
| 643 if ((curwin->w_valid & (VALID_WCOL|VALID_WROW)) != (VALID_WCOL|VALID_WROW)) | |
| 644 curs_columns(TRUE); | |
| 645 } | |
| 646 | |
| 647 #if defined(FEAT_GUI) || defined(PROTO) | |
| 648 /* | |
| 649 * validate w_cline_row. | |
| 650 */ | |
| 651 void | |
|
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652 validate_cline_row(void) |
| 7 | 653 { |
| 654 /* | |
| 655 * First make sure that w_topline is valid (after moving the cursor). | |
| 656 */ | |
| 657 update_topline(); | |
| 658 check_cursor_moved(curwin); | |
| 659 if (!(curwin->w_valid & VALID_CROW)) | |
| 6441 | 660 curs_rows(curwin); |
| 7 | 661 } |
| 662 #endif | |
| 663 | |
| 664 /* | |
| 665 * Compute wp->w_cline_row and wp->w_cline_height, based on the current value | |
|
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666 * of wp->w_topline. |
| 7 | 667 */ |
| 668 static void | |
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|
669 curs_rows(win_T *wp) |
| 7 | 670 { |
| 671 linenr_T lnum; | |
| 672 int i; | |
| 673 int all_invalid; | |
| 674 int valid; | |
| 675 #ifdef FEAT_FOLDING | |
| 676 long fold_count; | |
| 677 #endif | |
| 678 | |
| 679 /* Check if wp->w_lines[].wl_size is invalid */ | |
| 680 all_invalid = (!redrawing() | |
| 681 || wp->w_lines_valid == 0 | |
| 682 || wp->w_lines[0].wl_lnum > wp->w_topline); | |
| 683 i = 0; | |
| 684 wp->w_cline_row = 0; | |
| 685 for (lnum = wp->w_topline; lnum < wp->w_cursor.lnum; ++i) | |
| 686 { | |
| 687 valid = FALSE; | |
| 688 if (!all_invalid && i < wp->w_lines_valid) | |
| 689 { | |
| 690 if (wp->w_lines[i].wl_lnum < lnum || !wp->w_lines[i].wl_valid) | |
| 691 continue; /* skip changed or deleted lines */ | |
| 692 if (wp->w_lines[i].wl_lnum == lnum) | |
| 693 { | |
| 694 #ifdef FEAT_FOLDING | |
| 695 /* Check for newly inserted lines below this row, in which | |
| 696 * case we need to check for folded lines. */ | |
| 697 if (!wp->w_buffer->b_mod_set | |
| 698 || wp->w_lines[i].wl_lastlnum < wp->w_cursor.lnum | |
| 699 || wp->w_buffer->b_mod_top | |
| 700 > wp->w_lines[i].wl_lastlnum + 1) | |
| 701 #endif | |
| 702 valid = TRUE; | |
| 703 } | |
| 704 else if (wp->w_lines[i].wl_lnum > lnum) | |
| 705 --i; /* hold at inserted lines */ | |
| 706 } | |
| 707 if (valid | |
| 708 #ifdef FEAT_DIFF | |
| 709 && (lnum != wp->w_topline || !wp->w_p_diff) | |
| 710 #endif | |
| 711 ) | |
| 712 { | |
| 713 #ifdef FEAT_FOLDING | |
| 714 lnum = wp->w_lines[i].wl_lastlnum + 1; | |
| 715 /* Cursor inside folded lines, don't count this row */ | |
| 716 if (lnum > wp->w_cursor.lnum) | |
| 717 break; | |
| 718 #else | |
| 719 ++lnum; | |
| 720 #endif | |
| 721 wp->w_cline_row += wp->w_lines[i].wl_size; | |
| 722 } | |
| 723 else | |
| 724 { | |
| 725 #ifdef FEAT_FOLDING | |
| 726 fold_count = foldedCount(wp, lnum, NULL); | |
| 727 if (fold_count) | |
| 728 { | |
| 729 lnum += fold_count; | |
| 730 if (lnum > wp->w_cursor.lnum) | |
| 731 break; | |
| 732 ++wp->w_cline_row; | |
| 733 } | |
| 734 else | |
| 735 #endif | |
| 736 #ifdef FEAT_DIFF | |
| 737 if (lnum == wp->w_topline) | |
| 738 wp->w_cline_row += plines_win_nofill(wp, lnum++, TRUE) | |
| 739 + wp->w_topfill; | |
| 740 else | |
| 741 #endif | |
| 742 wp->w_cline_row += plines_win(wp, lnum++, TRUE); | |
| 743 } | |
| 744 } | |
| 745 | |
| 746 check_cursor_moved(wp); | |
| 747 if (!(wp->w_valid & VALID_CHEIGHT)) | |
| 748 { | |
| 749 if (all_invalid | |
| 750 || i == wp->w_lines_valid | |
| 751 || (i < wp->w_lines_valid | |
| 752 && (!wp->w_lines[i].wl_valid | |
| 753 || wp->w_lines[i].wl_lnum != wp->w_cursor.lnum))) | |
| 754 { | |
| 755 #ifdef FEAT_DIFF | |
| 756 if (wp->w_cursor.lnum == wp->w_topline) | |
| 757 wp->w_cline_height = plines_win_nofill(wp, wp->w_cursor.lnum, | |
| 758 TRUE) + wp->w_topfill; | |
| 759 else | |
| 760 #endif | |
| 761 wp->w_cline_height = plines_win(wp, wp->w_cursor.lnum, TRUE); | |
| 762 #ifdef FEAT_FOLDING | |
| 763 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
| 764 NULL, NULL, TRUE, NULL); | |
| 765 #endif | |
| 766 } | |
| 767 else if (i > wp->w_lines_valid) | |
| 768 { | |
| 769 /* a line that is too long to fit on the last screen line */ | |
| 770 wp->w_cline_height = 0; | |
| 771 #ifdef FEAT_FOLDING | |
| 772 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
| 773 NULL, NULL, TRUE, NULL); | |
| 774 #endif | |
| 775 } | |
| 776 else | |
| 777 { | |
| 778 wp->w_cline_height = wp->w_lines[i].wl_size; | |
| 779 #ifdef FEAT_FOLDING | |
| 780 wp->w_cline_folded = wp->w_lines[i].wl_folded; | |
| 781 #endif | |
| 782 } | |
| 783 } | |
| 784 | |
| 5764 | 785 redraw_for_cursorline(curwin); |
| 7 | 786 wp->w_valid |= VALID_CROW|VALID_CHEIGHT; |
| 787 | |
| 788 } | |
| 789 | |
| 790 /* | |
| 791 * Validate curwin->w_virtcol only. | |
| 792 */ | |
| 793 void | |
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794 validate_virtcol(void) |
| 7 | 795 { |
| 796 validate_virtcol_win(curwin); | |
| 797 } | |
| 798 | |
| 799 /* | |
| 800 * Validate wp->w_virtcol only. | |
| 801 */ | |
| 802 void | |
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803 validate_virtcol_win(win_T *wp) |
| 7 | 804 { |
| 805 check_cursor_moved(wp); | |
| 806 if (!(wp->w_valid & VALID_VIRTCOL)) | |
| 807 { | |
| 808 getvvcol(wp, &wp->w_cursor, NULL, &(wp->w_virtcol), NULL); | |
| 809 wp->w_valid |= VALID_VIRTCOL; | |
| 740 | 810 #ifdef FEAT_SYN_HL |
| 752 | 811 if (wp->w_p_cuc |
| 812 # ifdef FEAT_INS_EXPAND | |
| 813 && !pum_visible() | |
| 814 # endif | |
| 815 ) | |
| 740 | 816 redraw_win_later(wp, SOME_VALID); |
| 817 #endif | |
| 7 | 818 } |
| 819 } | |
| 820 | |
| 821 /* | |
| 822 * Validate curwin->w_cline_height only. | |
| 823 */ | |
| 824 static void | |
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825 validate_cheight(void) |
| 7 | 826 { |
| 827 check_cursor_moved(curwin); | |
| 828 if (!(curwin->w_valid & VALID_CHEIGHT)) | |
| 829 { | |
| 830 #ifdef FEAT_DIFF | |
| 831 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 832 curwin->w_cline_height = plines_nofill(curwin->w_cursor.lnum) | |
| 833 + curwin->w_topfill; | |
| 834 else | |
| 835 #endif | |
| 836 curwin->w_cline_height = plines(curwin->w_cursor.lnum); | |
| 837 #ifdef FEAT_FOLDING | |
| 838 curwin->w_cline_folded = hasFolding(curwin->w_cursor.lnum, NULL, NULL); | |
| 839 #endif | |
| 840 curwin->w_valid |= VALID_CHEIGHT; | |
| 841 } | |
| 842 } | |
| 843 | |
| 844 /* | |
| 1668 | 845 * Validate w_wcol and w_virtcol only. |
| 7 | 846 */ |
| 847 void | |
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848 validate_cursor_col(void) |
| 7 | 849 { |
| 850 colnr_T off; | |
| 851 colnr_T col; | |
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852 int width; |
| 7 | 853 |
| 854 validate_virtcol(); | |
| 855 if (!(curwin->w_valid & VALID_WCOL)) | |
| 856 { | |
| 857 col = curwin->w_virtcol; | |
| 858 off = curwin_col_off(); | |
| 859 col += off; | |
|
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860 width = W_WIDTH(curwin) - off + curwin_col_off2(); |
| 7 | 861 |
| 862 /* long line wrapping, adjust curwin->w_wrow */ | |
| 1668 | 863 if (curwin->w_p_wrap |
| 864 && col >= (colnr_T)W_WIDTH(curwin) | |
|
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865 && width > 0) |
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866 /* use same formula as what is used in curs_columns() */ |
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867 col -= ((col - W_WIDTH(curwin)) / width + 1) * width; |
| 1668 | 868 if (col > (int)curwin->w_leftcol) |
| 869 col -= curwin->w_leftcol; | |
| 870 else | |
| 871 col = 0; | |
| 7 | 872 curwin->w_wcol = col; |
| 1668 | 873 |
| 7 | 874 curwin->w_valid |= VALID_WCOL; |
| 875 } | |
| 876 } | |
| 877 | |
| 878 /* | |
|
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879 * Compute offset of a window, occupied by absolute or relative line number, |
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880 * fold column and sign column (these don't move when scrolling horizontally). |
| 7 | 881 */ |
| 882 int | |
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883 win_col_off(win_T *wp) |
| 7 | 884 { |
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885 return (((wp->w_p_nu || wp->w_p_rnu) ? number_width(wp) + 1 : 0) |
| 7 | 886 #ifdef FEAT_CMDWIN |
| 887 + (cmdwin_type == 0 || wp != curwin ? 0 : 1) | |
| 888 #endif | |
| 889 #ifdef FEAT_FOLDING | |
| 890 + wp->w_p_fdc | |
| 891 #endif | |
| 892 #ifdef FEAT_SIGNS | |
| 893 + ( | |
| 894 # ifdef FEAT_NETBEANS_INTG | |
| 2210 | 895 /* show glyph gutter in netbeans */ |
| 6689 | 896 wp->w_buffer->b_has_sign_column || |
| 7 | 897 # endif |
| 898 wp->w_buffer->b_signlist != NULL ? 2 : 0) | |
| 899 #endif | |
| 900 ); | |
| 901 } | |
| 902 | |
| 903 int | |
|
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904 curwin_col_off(void) |
| 7 | 905 { |
| 906 return win_col_off(curwin); | |
| 907 } | |
| 908 | |
| 909 /* | |
| 910 * Return the difference in column offset for the second screen line of a | |
|
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911 * wrapped line. It's 8 if 'number' or 'relativenumber' is on and 'n' is in |
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912 * 'cpoptions'. |
| 7 | 913 */ |
| 914 int | |
|
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915 win_col_off2(win_T *wp) |
| 7 | 916 { |
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917 if ((wp->w_p_nu || wp->w_p_rnu) && vim_strchr(p_cpo, CPO_NUMCOL) != NULL) |
| 13 | 918 return number_width(wp) + 1; |
| 7 | 919 return 0; |
| 920 } | |
| 921 | |
| 922 int | |
|
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923 curwin_col_off2(void) |
| 7 | 924 { |
| 925 return win_col_off2(curwin); | |
| 926 } | |
| 927 | |
| 928 /* | |
| 929 * compute curwin->w_wcol and curwin->w_virtcol. | |
| 930 * Also updates curwin->w_wrow and curwin->w_cline_row. | |
| 931 * Also updates curwin->w_leftcol. | |
| 932 */ | |
| 933 void | |
|
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934 curs_columns( |
|
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935 int may_scroll) /* when TRUE, may scroll horizontally */ |
| 7 | 936 { |
| 937 int diff; | |
| 938 int extra; /* offset for first screen line */ | |
| 939 int off_left, off_right; | |
| 940 int n; | |
| 941 int p_lines; | |
| 942 int width = 0; | |
| 943 int textwidth; | |
| 944 int new_leftcol; | |
| 945 colnr_T startcol; | |
| 946 colnr_T endcol; | |
| 947 colnr_T prev_skipcol; | |
| 948 | |
| 949 /* | |
| 950 * First make sure that w_topline is valid (after moving the cursor). | |
| 951 */ | |
| 952 update_topline(); | |
| 953 | |
| 954 /* | |
| 955 * Next make sure that w_cline_row is valid. | |
| 956 */ | |
| 957 if (!(curwin->w_valid & VALID_CROW)) | |
| 6441 | 958 curs_rows(curwin); |
| 7 | 959 |
| 960 /* | |
| 961 * Compute the number of virtual columns. | |
| 962 */ | |
| 963 #ifdef FEAT_FOLDING | |
| 964 if (curwin->w_cline_folded) | |
| 965 /* In a folded line the cursor is always in the first column */ | |
| 966 startcol = curwin->w_virtcol = endcol = curwin->w_leftcol; | |
| 967 else | |
| 968 #endif | |
| 969 getvvcol(curwin, &curwin->w_cursor, | |
| 970 &startcol, &(curwin->w_virtcol), &endcol); | |
| 971 | |
| 972 /* remove '$' from change command when cursor moves onto it */ | |
| 973 if (startcol > dollar_vcol) | |
| 3318 | 974 dollar_vcol = -1; |
| 7 | 975 |
| 976 extra = curwin_col_off(); | |
| 977 curwin->w_wcol = curwin->w_virtcol + extra; | |
| 978 endcol += extra; | |
| 979 | |
| 980 /* | |
| 981 * Now compute w_wrow, counting screen lines from w_cline_row. | |
| 982 */ | |
| 983 curwin->w_wrow = curwin->w_cline_row; | |
| 984 | |
| 985 textwidth = W_WIDTH(curwin) - extra; | |
| 986 if (textwidth <= 0) | |
| 987 { | |
| 988 /* No room for text, put cursor in last char of window. */ | |
| 989 curwin->w_wcol = W_WIDTH(curwin) - 1; | |
| 990 curwin->w_wrow = curwin->w_height - 1; | |
| 991 } | |
| 992 else if (curwin->w_p_wrap | |
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993 #ifdef FEAT_WINDOWS |
| 7 | 994 && curwin->w_width != 0 |
| 995 #endif | |
| 996 ) | |
| 997 { | |
| 998 width = textwidth + curwin_col_off2(); | |
| 999 | |
| 1000 /* long line wrapping, adjust curwin->w_wrow */ | |
| 1001 if (curwin->w_wcol >= W_WIDTH(curwin)) | |
| 1002 { | |
|
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1003 /* this same formula is used in validate_cursor_col() */ |
| 7 | 1004 n = (curwin->w_wcol - W_WIDTH(curwin)) / width + 1; |
| 1005 curwin->w_wcol -= n * width; | |
| 1006 curwin->w_wrow += n; | |
| 1007 | |
| 1008 #ifdef FEAT_LINEBREAK | |
| 1009 /* When cursor wraps to first char of next line in Insert | |
| 1010 * mode, the 'showbreak' string isn't shown, backup to first | |
| 1011 * column */ | |
| 1012 if (*p_sbr && *ml_get_cursor() == NUL | |
| 1013 && curwin->w_wcol == (int)vim_strsize(p_sbr)) | |
| 1014 curwin->w_wcol = 0; | |
| 1015 #endif | |
| 1016 } | |
| 1017 } | |
| 1018 | |
| 1019 /* No line wrapping: compute curwin->w_leftcol if scrolling is on and line | |
| 1020 * is not folded. | |
| 1021 * If scrolling is off, curwin->w_leftcol is assumed to be 0 */ | |
| 3263 | 1022 else if (may_scroll |
| 7 | 1023 #ifdef FEAT_FOLDING |
| 1024 && !curwin->w_cline_folded | |
| 1025 #endif | |
| 1026 ) | |
| 1027 { | |
| 1028 /* | |
| 1029 * If Cursor is left of the screen, scroll rightwards. | |
| 1030 * If Cursor is right of the screen, scroll leftwards | |
| 1031 * If we get closer to the edge than 'sidescrolloff', scroll a little | |
| 1032 * extra | |
| 1033 */ | |
| 1034 off_left = (int)startcol - (int)curwin->w_leftcol - p_siso; | |
| 1035 off_right = (int)endcol - (int)(curwin->w_leftcol + W_WIDTH(curwin) | |
| 1036 - p_siso) + 1; | |
| 1037 if (off_left < 0 || off_right > 0) | |
| 1038 { | |
| 1039 if (off_left < 0) | |
| 1040 diff = -off_left; | |
| 1041 else | |
| 1042 diff = off_right; | |
| 1043 | |
| 1044 /* When far off or not enough room on either side, put cursor in | |
| 1045 * middle of window. */ | |
| 1046 if (p_ss == 0 || diff >= textwidth / 2 || off_right >= off_left) | |
| 1047 new_leftcol = curwin->w_wcol - extra - textwidth / 2; | |
| 1048 else | |
| 1049 { | |
| 1050 if (diff < p_ss) | |
| 1051 diff = p_ss; | |
| 1052 if (off_left < 0) | |
| 1053 new_leftcol = curwin->w_leftcol - diff; | |
| 1054 else | |
| 1055 new_leftcol = curwin->w_leftcol + diff; | |
| 1056 } | |
| 1057 if (new_leftcol < 0) | |
| 1058 new_leftcol = 0; | |
| 1059 if (new_leftcol != (int)curwin->w_leftcol) | |
| 1060 { | |
| 1061 curwin->w_leftcol = new_leftcol; | |
| 1062 /* screen has to be redrawn with new curwin->w_leftcol */ | |
| 1063 redraw_later(NOT_VALID); | |
| 1064 } | |
| 1065 } | |
| 1066 curwin->w_wcol -= curwin->w_leftcol; | |
| 1067 } | |
| 1068 else if (curwin->w_wcol > (int)curwin->w_leftcol) | |
| 1069 curwin->w_wcol -= curwin->w_leftcol; | |
| 1070 else | |
| 1071 curwin->w_wcol = 0; | |
| 1072 | |
| 1073 #ifdef FEAT_DIFF | |
| 1074 /* Skip over filler lines. At the top use w_topfill, there | |
| 1075 * may be some filler lines above the window. */ | |
| 1076 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 1077 curwin->w_wrow += curwin->w_topfill; | |
| 1078 else | |
| 1079 curwin->w_wrow += diff_check_fill(curwin, curwin->w_cursor.lnum); | |
| 1080 #endif | |
| 1081 | |
| 1082 prev_skipcol = curwin->w_skipcol; | |
| 1083 | |
| 1084 p_lines = 0; | |
| 1085 if ((curwin->w_wrow >= curwin->w_height | |
| 1086 || ((prev_skipcol > 0 | |
| 1087 || curwin->w_wrow + p_so >= curwin->w_height) | |
| 1088 && (p_lines = | |
| 1089 #ifdef FEAT_DIFF | |
| 1090 plines_win_nofill | |
| 1091 #else | |
| 1092 plines_win | |
| 1093 #endif | |
| 1094 (curwin, curwin->w_cursor.lnum, FALSE)) | |
| 1095 - 1 >= curwin->w_height)) | |
| 1096 && curwin->w_height != 0 | |
| 1097 && curwin->w_cursor.lnum == curwin->w_topline | |
| 1098 && width > 0 | |
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1099 #ifdef FEAT_WINDOWS |
| 7 | 1100 && curwin->w_width != 0 |
| 1101 #endif | |
| 1102 ) | |
| 1103 { | |
| 1104 /* Cursor past end of screen. Happens with a single line that does | |
| 1105 * not fit on screen. Find a skipcol to show the text around the | |
| 1106 * cursor. Avoid scrolling all the time. compute value of "extra": | |
| 1107 * 1: Less than "p_so" lines above | |
| 1108 * 2: Less than "p_so" lines below | |
| 1109 * 3: both of them */ | |
| 1110 extra = 0; | |
| 1111 if (curwin->w_skipcol + p_so * width > curwin->w_virtcol) | |
| 1112 extra = 1; | |
| 1113 /* Compute last display line of the buffer line that we want at the | |
| 1114 * bottom of the window. */ | |
| 1115 if (p_lines == 0) | |
| 1116 p_lines = plines_win(curwin, curwin->w_cursor.lnum, FALSE); | |
| 1117 --p_lines; | |
| 1118 if (p_lines > curwin->w_wrow + p_so) | |
| 1119 n = curwin->w_wrow + p_so; | |
| 1120 else | |
| 1121 n = p_lines; | |
| 1122 if ((colnr_T)n >= curwin->w_height + curwin->w_skipcol / width) | |
| 1123 extra += 2; | |
| 1124 | |
| 1125 if (extra == 3 || p_lines < p_so * 2) | |
| 1126 { | |
| 1127 /* not enough room for 'scrolloff', put cursor in the middle */ | |
| 1128 n = curwin->w_virtcol / width; | |
| 1129 if (n > curwin->w_height / 2) | |
| 1130 n -= curwin->w_height / 2; | |
| 1131 else | |
| 1132 n = 0; | |
| 1133 /* don't skip more than necessary */ | |
| 1134 if (n > p_lines - curwin->w_height + 1) | |
| 1135 n = p_lines - curwin->w_height + 1; | |
| 1136 curwin->w_skipcol = n * width; | |
| 1137 } | |
| 1138 else if (extra == 1) | |
| 1139 { | |
| 1140 /* less then 'scrolloff' lines above, decrease skipcol */ | |
| 1141 extra = (curwin->w_skipcol + p_so * width - curwin->w_virtcol | |
| 1142 + width - 1) / width; | |
| 1143 if (extra > 0) | |
| 1144 { | |
| 1145 if ((colnr_T)(extra * width) > curwin->w_skipcol) | |
| 1146 extra = curwin->w_skipcol / width; | |
| 1147 curwin->w_skipcol -= extra * width; | |
| 1148 } | |
| 1149 } | |
| 1150 else if (extra == 2) | |
| 1151 { | |
| 1152 /* less then 'scrolloff' lines below, increase skipcol */ | |
| 1153 endcol = (n - curwin->w_height + 1) * width; | |
| 1154 while (endcol > curwin->w_virtcol) | |
| 1155 endcol -= width; | |
| 1156 if (endcol > curwin->w_skipcol) | |
| 1157 curwin->w_skipcol = endcol; | |
| 1158 } | |
| 1159 | |
| 1160 curwin->w_wrow -= curwin->w_skipcol / width; | |
| 1161 if (curwin->w_wrow >= curwin->w_height) | |
| 1162 { | |
| 1163 /* small window, make sure cursor is in it */ | |
| 1164 extra = curwin->w_wrow - curwin->w_height + 1; | |
| 1165 curwin->w_skipcol += extra * width; | |
| 1166 curwin->w_wrow -= extra; | |
| 1167 } | |
| 1168 | |
| 1169 extra = ((int)prev_skipcol - (int)curwin->w_skipcol) / width; | |
| 1170 if (extra > 0) | |
| 1171 win_ins_lines(curwin, 0, extra, FALSE, FALSE); | |
| 1172 else if (extra < 0) | |
| 1173 win_del_lines(curwin, 0, -extra, FALSE, FALSE); | |
| 1174 } | |
| 1175 else | |
| 1176 curwin->w_skipcol = 0; | |
| 1177 if (prev_skipcol != curwin->w_skipcol) | |
| 1178 redraw_later(NOT_VALID); | |
| 1179 | |
| 740 | 1180 #ifdef FEAT_SYN_HL |
| 5749 | 1181 /* Redraw when w_virtcol changes and 'cursorcolumn' is set */ |
| 1182 if (curwin->w_p_cuc && (curwin->w_valid & VALID_VIRTCOL) == 0 | |
| 1183 # ifdef FEAT_INS_EXPAND | |
| 1184 && !pum_visible() | |
| 1185 # endif | |
| 1186 ) | |
| 1187 redraw_later(SOME_VALID); | |
|
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1188 #endif |
| 740 | 1189 |
| 7 | 1190 curwin->w_valid |= VALID_WCOL|VALID_WROW|VALID_VIRTCOL; |
| 1191 } | |
| 1192 | |
| 1193 /* | |
| 1194 * Scroll the current window down by "line_count" logical lines. "CTRL-Y" | |
| 1195 */ | |
| 1196 void | |
|
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1197 scrolldown( |
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1198 long line_count, |
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1199 int byfold UNUSED) /* TRUE: count a closed fold as one line */ |
| 7 | 1200 { |
| 1201 long done = 0; /* total # of physical lines done */ | |
| 1202 int wrow; | |
| 1203 int moved = FALSE; | |
| 1204 | |
| 1205 #ifdef FEAT_FOLDING | |
| 1206 linenr_T first; | |
| 1207 | |
| 1208 /* Make sure w_topline is at the first of a sequence of folded lines. */ | |
| 1209 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 1210 #endif | |
| 1211 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1212 while (line_count-- > 0) | |
| 1213 { | |
| 1214 #ifdef FEAT_DIFF | |
| 1980 | 1215 if (curwin->w_topfill < diff_check(curwin, curwin->w_topline) |
| 1216 && curwin->w_topfill < curwin->w_height - 1) | |
| 7 | 1217 { |
| 1218 ++curwin->w_topfill; | |
| 1219 ++done; | |
| 1220 } | |
| 1221 else | |
| 1222 #endif | |
| 1223 { | |
| 1224 if (curwin->w_topline == 1) | |
| 1225 break; | |
| 1226 --curwin->w_topline; | |
| 1227 #ifdef FEAT_DIFF | |
| 1228 curwin->w_topfill = 0; | |
| 1229 #endif | |
| 1230 #ifdef FEAT_FOLDING | |
| 1231 /* A sequence of folded lines only counts for one logical line */ | |
| 1232 if (hasFolding(curwin->w_topline, &first, NULL)) | |
| 1233 { | |
| 1234 ++done; | |
| 1235 if (!byfold) | |
| 1236 line_count -= curwin->w_topline - first - 1; | |
| 1237 curwin->w_botline -= curwin->w_topline - first; | |
| 1238 curwin->w_topline = first; | |
| 1239 } | |
| 1240 else | |
| 1241 #endif | |
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1242 done += PLINES_NOFILL(curwin->w_topline); |
| 7 | 1243 } |
| 1244 --curwin->w_botline; /* approximate w_botline */ | |
| 1245 invalidate_botline(); | |
| 1246 } | |
| 1247 curwin->w_wrow += done; /* keep w_wrow updated */ | |
| 1248 curwin->w_cline_row += done; /* keep w_cline_row updated */ | |
| 1249 | |
| 1250 #ifdef FEAT_DIFF | |
| 1251 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 1252 curwin->w_cline_row = 0; | |
| 1253 check_topfill(curwin, TRUE); | |
| 1254 #endif | |
| 1255 | |
| 1256 /* | |
| 1257 * Compute the row number of the last row of the cursor line | |
| 1258 * and move the cursor onto the displayed part of the window. | |
| 1259 */ | |
| 1260 wrow = curwin->w_wrow; | |
| 1261 if (curwin->w_p_wrap | |
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1262 #ifdef FEAT_WINDOWS |
| 7 | 1263 && curwin->w_width != 0 |
| 1264 #endif | |
| 1265 ) | |
| 1266 { | |
| 1267 validate_virtcol(); | |
| 1268 validate_cheight(); | |
| 1269 wrow += curwin->w_cline_height - 1 - | |
| 1270 curwin->w_virtcol / W_WIDTH(curwin); | |
| 1271 } | |
| 1272 while (wrow >= curwin->w_height && curwin->w_cursor.lnum > 1) | |
| 1273 { | |
| 1274 #ifdef FEAT_FOLDING | |
| 1275 if (hasFolding(curwin->w_cursor.lnum, &first, NULL)) | |
| 1276 { | |
| 1277 --wrow; | |
| 1278 if (first == 1) | |
| 1279 curwin->w_cursor.lnum = 1; | |
| 1280 else | |
| 1281 curwin->w_cursor.lnum = first - 1; | |
| 1282 } | |
| 1283 else | |
| 1284 #endif | |
| 1285 wrow -= plines(curwin->w_cursor.lnum--); | |
| 1286 curwin->w_valid &= | |
| 1287 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
| 1288 moved = TRUE; | |
| 1289 } | |
| 1290 if (moved) | |
| 1291 { | |
| 1292 #ifdef FEAT_FOLDING | |
| 1293 /* Move cursor to first line of closed fold. */ | |
| 1294 foldAdjustCursor(); | |
| 1295 #endif | |
| 1296 coladvance(curwin->w_curswant); | |
| 1297 } | |
| 1298 } | |
| 1299 | |
| 1300 /* | |
| 1301 * Scroll the current window up by "line_count" logical lines. "CTRL-E" | |
| 1302 */ | |
| 1303 void | |
|
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1304 scrollup( |
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1305 long line_count, |
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1306 int byfold UNUSED) /* TRUE: count a closed fold as one line */ |
| 7 | 1307 { |
| 1308 #if defined(FEAT_FOLDING) || defined(FEAT_DIFF) | |
| 1309 linenr_T lnum; | |
| 1310 | |
| 1311 if ( | |
| 1312 # ifdef FEAT_FOLDING | |
| 1313 (byfold && hasAnyFolding(curwin)) | |
| 1314 # ifdef FEAT_DIFF | |
| 1315 || | |
| 1316 # endif | |
| 1317 # endif | |
| 1318 # ifdef FEAT_DIFF | |
| 1319 curwin->w_p_diff | |
| 1320 # endif | |
| 1321 ) | |
| 1322 { | |
| 1323 /* count each sequence of folded lines as one logical line */ | |
| 1324 lnum = curwin->w_topline; | |
| 1325 while (line_count--) | |
| 1326 { | |
| 1327 # ifdef FEAT_DIFF | |
| 1328 if (curwin->w_topfill > 0) | |
| 1329 --curwin->w_topfill; | |
| 1330 else | |
| 1331 # endif | |
| 1332 { | |
| 1333 # ifdef FEAT_FOLDING | |
| 1334 if (byfold) | |
| 1335 (void)hasFolding(lnum, NULL, &lnum); | |
| 1336 # endif | |
| 1337 if (lnum >= curbuf->b_ml.ml_line_count) | |
| 1338 break; | |
| 1339 ++lnum; | |
| 1340 # ifdef FEAT_DIFF | |
| 1341 curwin->w_topfill = diff_check_fill(curwin, lnum); | |
| 1342 # endif | |
| 1343 } | |
| 1344 } | |
| 1345 /* approximate w_botline */ | |
| 1346 curwin->w_botline += lnum - curwin->w_topline; | |
| 1347 curwin->w_topline = lnum; | |
| 1348 } | |
| 1349 else | |
| 1350 #endif | |
| 1351 { | |
| 1352 curwin->w_topline += line_count; | |
| 1353 curwin->w_botline += line_count; /* approximate w_botline */ | |
| 1354 } | |
| 1355 | |
| 1356 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
| 1357 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
| 1358 if (curwin->w_botline > curbuf->b_ml.ml_line_count + 1) | |
| 1359 curwin->w_botline = curbuf->b_ml.ml_line_count + 1; | |
| 1360 | |
| 1361 #ifdef FEAT_DIFF | |
| 1362 check_topfill(curwin, FALSE); | |
| 1363 #endif | |
| 1364 | |
| 1365 #ifdef FEAT_FOLDING | |
| 1366 if (hasAnyFolding(curwin)) | |
| 1367 /* Make sure w_topline is at the first of a sequence of folded lines. */ | |
| 1368 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 1369 #endif | |
| 1370 | |
| 1371 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1372 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 1373 { | |
| 1374 curwin->w_cursor.lnum = curwin->w_topline; | |
| 1375 curwin->w_valid &= | |
| 1376 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
| 1377 coladvance(curwin->w_curswant); | |
| 1378 } | |
| 1379 } | |
| 1380 | |
| 1381 #ifdef FEAT_DIFF | |
| 1382 /* | |
| 1383 * Don't end up with too many filler lines in the window. | |
| 1384 */ | |
| 1385 void | |
|
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diff
changeset
|
1386 check_topfill( |
|
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diff
changeset
|
1387 win_T *wp, |
|
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diff
changeset
|
1388 int down) /* when TRUE scroll down when not enough space */ |
| 7 | 1389 { |
| 1390 int n; | |
| 1391 | |
| 1392 if (wp->w_topfill > 0) | |
| 1393 { | |
| 1394 n = plines_win_nofill(wp, wp->w_topline, TRUE); | |
| 1395 if (wp->w_topfill + n > wp->w_height) | |
| 1396 { | |
| 1397 if (down && wp->w_topline > 1) | |
| 1398 { | |
| 1399 --wp->w_topline; | |
| 1400 wp->w_topfill = 0; | |
| 1401 } | |
| 1402 else | |
| 1403 { | |
| 1404 wp->w_topfill = wp->w_height - n; | |
| 1405 if (wp->w_topfill < 0) | |
| 1406 wp->w_topfill = 0; | |
| 1407 } | |
| 1408 } | |
| 1409 } | |
| 1410 } | |
| 1411 | |
| 1412 /* | |
| 1413 * Use as many filler lines as possible for w_topline. Make sure w_topline | |
| 1414 * is still visible. | |
| 1415 */ | |
| 1416 static void | |
|
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changeset
|
1417 max_topfill(void) |
| 7 | 1418 { |
| 1419 int n; | |
| 1420 | |
| 1421 n = plines_nofill(curwin->w_topline); | |
| 1422 if (n >= curwin->w_height) | |
| 1423 curwin->w_topfill = 0; | |
| 1424 else | |
| 1425 { | |
| 1426 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 1427 if (curwin->w_topfill + n > curwin->w_height) | |
| 1428 curwin->w_topfill = curwin->w_height - n; | |
| 1429 } | |
| 1430 } | |
| 1431 #endif | |
| 1432 | |
| 1433 #if defined(FEAT_INS_EXPAND) || defined(PROTO) | |
| 1434 /* | |
| 1435 * Scroll the screen one line down, but don't do it if it would move the | |
| 1436 * cursor off the screen. | |
| 1437 */ | |
| 1438 void | |
|
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diff
changeset
|
1439 scrolldown_clamp(void) |
| 7 | 1440 { |
| 1441 int end_row; | |
| 1442 #ifdef FEAT_DIFF | |
| 1443 int can_fill = (curwin->w_topfill | |
| 1444 < diff_check_fill(curwin, curwin->w_topline)); | |
| 1445 #endif | |
| 1446 | |
| 1447 if (curwin->w_topline <= 1 | |
| 1448 #ifdef FEAT_DIFF | |
| 1449 && !can_fill | |
| 1450 #endif | |
| 1451 ) | |
| 1452 return; | |
| 1453 | |
| 1454 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1455 | |
| 1456 /* | |
| 1457 * Compute the row number of the last row of the cursor line | |
| 1458 * and make sure it doesn't go off the screen. Make sure the cursor | |
| 1459 * doesn't go past 'scrolloff' lines from the screen end. | |
| 1460 */ | |
| 1461 end_row = curwin->w_wrow; | |
| 1462 #ifdef FEAT_DIFF | |
| 1463 if (can_fill) | |
| 1464 ++end_row; | |
| 1465 else | |
| 1466 end_row += plines_nofill(curwin->w_topline - 1); | |
| 1467 #else | |
| 1468 end_row += plines(curwin->w_topline - 1); | |
| 1469 #endif | |
| 1470 if (curwin->w_p_wrap | |
|
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changeset
|
1471 #ifdef FEAT_WINDOWS |
| 7 | 1472 && curwin->w_width != 0 |
| 1473 #endif | |
| 1474 ) | |
| 1475 { | |
| 1476 validate_cheight(); | |
| 1477 validate_virtcol(); | |
| 1478 end_row += curwin->w_cline_height - 1 - | |
| 1479 curwin->w_virtcol / W_WIDTH(curwin); | |
| 1480 } | |
| 1481 if (end_row < curwin->w_height - p_so) | |
| 1482 { | |
| 1483 #ifdef FEAT_DIFF | |
| 1484 if (can_fill) | |
| 1485 { | |
| 1486 ++curwin->w_topfill; | |
| 1487 check_topfill(curwin, TRUE); | |
| 1488 } | |
| 1489 else | |
| 1490 { | |
| 1491 --curwin->w_topline; | |
| 1492 curwin->w_topfill = 0; | |
| 1493 } | |
| 1494 #else | |
| 1495 --curwin->w_topline; | |
| 1496 #endif | |
| 1497 #ifdef FEAT_FOLDING | |
| 7009 | 1498 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
| 7 | 1499 #endif |
| 1500 --curwin->w_botline; /* approximate w_botline */ | |
| 1501 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1502 } | |
| 1503 } | |
| 1504 | |
| 1505 /* | |
| 1506 * Scroll the screen one line up, but don't do it if it would move the cursor | |
| 1507 * off the screen. | |
| 1508 */ | |
| 1509 void | |
|
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diff
changeset
|
1510 scrollup_clamp(void) |
| 7 | 1511 { |
| 1512 int start_row; | |
| 1513 | |
| 1514 if (curwin->w_topline == curbuf->b_ml.ml_line_count | |
| 1515 #ifdef FEAT_DIFF | |
| 1516 && curwin->w_topfill == 0 | |
| 1517 #endif | |
| 1518 ) | |
| 1519 return; | |
| 1520 | |
| 1521 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1522 | |
| 1523 /* | |
| 1524 * Compute the row number of the first row of the cursor line | |
| 1525 * and make sure it doesn't go off the screen. Make sure the cursor | |
| 1526 * doesn't go before 'scrolloff' lines from the screen start. | |
| 1527 */ | |
| 1528 #ifdef FEAT_DIFF | |
| 1529 start_row = curwin->w_wrow - plines_nofill(curwin->w_topline) | |
| 1530 - curwin->w_topfill; | |
| 1531 #else | |
| 1532 start_row = curwin->w_wrow - plines(curwin->w_topline); | |
| 1533 #endif | |
| 1534 if (curwin->w_p_wrap | |
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changeset
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1535 #ifdef FEAT_WINDOWS |
| 7 | 1536 && curwin->w_width != 0 |
| 1537 #endif | |
| 1538 ) | |
| 1539 { | |
| 1540 validate_virtcol(); | |
| 1541 start_row -= curwin->w_virtcol / W_WIDTH(curwin); | |
| 1542 } | |
| 1543 if (start_row >= p_so) | |
| 1544 { | |
| 1545 #ifdef FEAT_DIFF | |
| 1546 if (curwin->w_topfill > 0) | |
| 1547 --curwin->w_topfill; | |
| 1548 else | |
| 1549 #endif | |
| 36 | 1550 { |
| 1551 #ifdef FEAT_FOLDING | |
| 1552 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
| 1553 #endif | |
| 7 | 1554 ++curwin->w_topline; |
| 36 | 1555 } |
| 7 | 1556 ++curwin->w_botline; /* approximate w_botline */ |
| 1557 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1558 } | |
| 1559 } | |
| 1560 #endif /* FEAT_INS_EXPAND */ | |
| 1561 | |
| 1562 /* | |
| 1563 * Add one line above "lp->lnum". This can be a filler line, a closed fold or | |
| 1564 * a (wrapped) text line. Uses and sets "lp->fill". | |
| 1565 * Returns the height of the added line in "lp->height". | |
|
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1566 * Lines above the first one are incredibly high: MAXCOL. |
| 7 | 1567 */ |
| 1568 static void | |
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diff
changeset
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1569 topline_back(lineoff_T *lp) |
| 7 | 1570 { |
| 1571 #ifdef FEAT_DIFF | |
| 1572 if (lp->fill < diff_check_fill(curwin, lp->lnum)) | |
| 1573 { | |
| 1574 /* Add a filler line. */ | |
| 1575 ++lp->fill; | |
| 1576 lp->height = 1; | |
| 1577 } | |
| 1578 else | |
| 1579 #endif | |
| 1580 { | |
| 1581 --lp->lnum; | |
| 1582 #ifdef FEAT_DIFF | |
| 1583 lp->fill = 0; | |
| 1584 #endif | |
| 1585 if (lp->lnum < 1) | |
| 1586 lp->height = MAXCOL; | |
| 1587 else | |
| 1588 #ifdef FEAT_FOLDING | |
| 1589 if (hasFolding(lp->lnum, &lp->lnum, NULL)) | |
| 1590 /* Add a closed fold */ | |
| 1591 lp->height = 1; | |
| 1592 else | |
| 1593 #endif | |
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1594 lp->height = PLINES_NOFILL(lp->lnum); |
| 7 | 1595 } |
| 1596 } | |
| 1597 | |
| 1598 /* | |
| 1599 * Add one line below "lp->lnum". This can be a filler line, a closed fold or | |
| 1600 * a (wrapped) text line. Uses and sets "lp->fill". | |
| 1601 * Returns the height of the added line in "lp->height". | |
| 1602 * Lines below the last one are incredibly high. | |
| 1603 */ | |
| 1604 static void | |
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diff
changeset
|
1605 botline_forw(lineoff_T *lp) |
| 7 | 1606 { |
| 1607 #ifdef FEAT_DIFF | |
| 1608 if (lp->fill < diff_check_fill(curwin, lp->lnum + 1)) | |
| 1609 { | |
| 1610 /* Add a filler line. */ | |
| 1611 ++lp->fill; | |
| 1612 lp->height = 1; | |
| 1613 } | |
| 1614 else | |
| 1615 #endif | |
| 1616 { | |
| 1617 ++lp->lnum; | |
| 1618 #ifdef FEAT_DIFF | |
| 1619 lp->fill = 0; | |
| 1620 #endif | |
| 1621 if (lp->lnum > curbuf->b_ml.ml_line_count) | |
| 1622 lp->height = MAXCOL; | |
| 1623 else | |
| 1624 #ifdef FEAT_FOLDING | |
| 1625 if (hasFolding(lp->lnum, NULL, &lp->lnum)) | |
| 1626 /* Add a closed fold */ | |
| 1627 lp->height = 1; | |
| 1628 else | |
| 1629 #endif | |
| 1630 { | |
|
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diff
changeset
|
1631 lp->height = PLINES_NOFILL(lp->lnum); |
| 7 | 1632 } |
| 1633 } | |
| 1634 } | |
| 1635 | |
| 1636 #ifdef FEAT_DIFF | |
| 1637 /* | |
| 1638 * Switch from including filler lines below lp->lnum to including filler | |
| 1639 * lines above loff.lnum + 1. This keeps pointing to the same line. | |
| 1640 * When there are no filler lines nothing changes. | |
| 1641 */ | |
| 1642 static void | |
|
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diff
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|
1643 botline_topline(lineoff_T *lp) |
| 7 | 1644 { |
| 1645 if (lp->fill > 0) | |
| 1646 { | |
| 1647 ++lp->lnum; | |
| 1648 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
| 1649 } | |
| 1650 } | |
| 1651 | |
| 1652 /* | |
| 1653 * Switch from including filler lines above lp->lnum to including filler | |
| 1654 * lines below loff.lnum - 1. This keeps pointing to the same line. | |
| 1655 * When there are no filler lines nothing changes. | |
| 1656 */ | |
| 1657 static void | |
|
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diff
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1658 topline_botline(lineoff_T *lp) |
| 7 | 1659 { |
| 1660 if (lp->fill > 0) | |
| 1661 { | |
| 1662 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
| 1663 --lp->lnum; | |
| 1664 } | |
| 1665 } | |
| 1666 #endif | |
| 1667 | |
| 1668 /* | |
| 1669 * Recompute topline to put the cursor at the top of the window. | |
| 1670 * Scroll at least "min_scroll" lines. | |
| 1671 * If "always" is TRUE, always set topline (for "zt"). | |
| 1672 */ | |
| 1673 void | |
|
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diff
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|
1674 scroll_cursor_top(int min_scroll, int always) |
| 7 | 1675 { |
| 1676 int scrolled = 0; | |
| 1677 int extra = 0; | |
| 1678 int used; | |
| 1679 int i; | |
| 1680 linenr_T top; /* just above displayed lines */ | |
| 1681 linenr_T bot; /* just below displayed lines */ | |
| 1682 linenr_T old_topline = curwin->w_topline; | |
| 1683 #ifdef FEAT_DIFF | |
| 1684 linenr_T old_topfill = curwin->w_topfill; | |
| 1685 #endif | |
| 1686 linenr_T new_topline; | |
| 1687 int off = p_so; | |
| 1688 | |
| 1689 #ifdef FEAT_MOUSE | |
| 1690 if (mouse_dragging > 0) | |
| 1691 off = mouse_dragging - 1; | |
| 1692 #endif | |
| 1693 | |
| 1694 /* | |
| 1695 * Decrease topline until: | |
| 1696 * - it has become 1 | |
| 1697 * - (part of) the cursor line is moved off the screen or | |
| 1698 * - moved at least 'scrolljump' lines and | |
| 1699 * - at least 'scrolloff' lines above and below the cursor | |
| 1700 */ | |
| 1701 validate_cheight(); | |
|
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diff
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1702 used = curwin->w_cline_height; /* includes filler lines above */ |
| 7 | 1703 if (curwin->w_cursor.lnum < curwin->w_topline) |
| 1704 scrolled = used; | |
| 1705 | |
| 1706 #ifdef FEAT_FOLDING | |
| 1707 if (hasFolding(curwin->w_cursor.lnum, &top, &bot)) | |
| 1708 { | |
| 1709 --top; | |
| 1710 ++bot; | |
| 1711 } | |
| 1712 else | |
| 1713 #endif | |
| 1714 { | |
| 1715 top = curwin->w_cursor.lnum - 1; | |
| 1716 bot = curwin->w_cursor.lnum + 1; | |
| 1717 } | |
| 1718 new_topline = top + 1; | |
| 1719 | |
| 1720 #ifdef FEAT_DIFF | |
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1721 /* "used" already contains the number of filler lines above, don't add it |
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1722 * again. |
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1723 * Hide filler lines above cursor line by adding them to "extra". */ |
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1724 extra += diff_check_fill(curwin, curwin->w_cursor.lnum); |
| 7 | 1725 #endif |
| 1726 | |
| 1727 /* | |
| 1728 * Check if the lines from "top" to "bot" fit in the window. If they do, | |
| 1729 * set new_topline and advance "top" and "bot" to include more lines. | |
| 1730 */ | |
| 1731 while (top > 0) | |
| 1732 { | |
| 1733 #ifdef FEAT_FOLDING | |
| 1734 if (hasFolding(top, &top, NULL)) | |
| 1735 /* count one logical line for a sequence of folded lines */ | |
| 1736 i = 1; | |
| 1737 else | |
| 1738 #endif | |
|
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|
1739 i = PLINES_NOFILL(top); |
| 7 | 1740 used += i; |
| 1741 if (extra + i <= off && bot < curbuf->b_ml.ml_line_count) | |
| 1742 { | |
| 1743 #ifdef FEAT_FOLDING | |
| 1744 if (hasFolding(bot, NULL, &bot)) | |
| 1745 /* count one logical line for a sequence of folded lines */ | |
| 1746 ++used; | |
| 1747 else | |
| 1748 #endif | |
| 1749 used += plines(bot); | |
| 1750 } | |
| 1751 if (used > curwin->w_height) | |
| 1752 break; | |
| 1753 if (top < curwin->w_topline) | |
| 1754 scrolled += i; | |
| 1755 | |
| 1756 /* | |
| 1757 * If scrolling is needed, scroll at least 'sj' lines. | |
| 1758 */ | |
| 1759 if ((new_topline >= curwin->w_topline || scrolled > min_scroll) | |
| 1760 && extra >= off) | |
| 1761 break; | |
| 1762 | |
| 1763 extra += i; | |
| 1764 new_topline = top; | |
| 1765 --top; | |
| 1766 ++bot; | |
| 1767 } | |
| 1768 | |
| 1769 /* | |
| 1770 * If we don't have enough space, put cursor in the middle. | |
| 1771 * This makes sure we get the same position when using "k" and "j" | |
| 1772 * in a small window. | |
| 1773 */ | |
| 1774 if (used > curwin->w_height) | |
| 1775 scroll_cursor_halfway(FALSE); | |
| 1776 else | |
| 1777 { | |
| 1778 /* | |
| 1779 * If "always" is FALSE, only adjust topline to a lower value, higher | |
| 1780 * value may happen with wrapping lines | |
| 1781 */ | |
| 1782 if (new_topline < curwin->w_topline || always) | |
| 1783 curwin->w_topline = new_topline; | |
| 1784 if (curwin->w_topline > curwin->w_cursor.lnum) | |
| 1785 curwin->w_topline = curwin->w_cursor.lnum; | |
| 1786 #ifdef FEAT_DIFF | |
| 1787 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 1788 if (curwin->w_topfill > 0 && extra > off) | |
| 1789 { | |
| 1790 curwin->w_topfill -= extra - off; | |
| 1791 if (curwin->w_topfill < 0) | |
| 1792 curwin->w_topfill = 0; | |
| 1793 } | |
| 1794 check_topfill(curwin, FALSE); | |
| 1795 #endif | |
| 1796 if (curwin->w_topline != old_topline | |
| 1797 #ifdef FEAT_DIFF | |
| 1798 || curwin->w_topfill != old_topfill | |
| 1799 #endif | |
| 1800 ) | |
| 1801 curwin->w_valid &= | |
| 1802 ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 1803 curwin->w_valid |= VALID_TOPLINE; | |
| 1804 } | |
| 1805 } | |
| 1806 | |
| 1807 /* | |
| 1808 * Set w_empty_rows and w_filler_rows for window "wp", having used up "used" | |
| 1809 * screen lines for text lines. | |
| 1810 */ | |
| 1811 void | |
|
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|
1812 set_empty_rows(win_T *wp, int used) |
| 7 | 1813 { |
| 1814 #ifdef FEAT_DIFF | |
| 1815 wp->w_filler_rows = 0; | |
| 1816 #endif | |
| 1817 if (used == 0) | |
| 1818 wp->w_empty_rows = 0; /* single line that doesn't fit */ | |
| 1819 else | |
| 1820 { | |
| 1821 wp->w_empty_rows = wp->w_height - used; | |
| 1822 #ifdef FEAT_DIFF | |
| 1823 if (wp->w_botline <= wp->w_buffer->b_ml.ml_line_count) | |
| 1824 { | |
| 1825 wp->w_filler_rows = diff_check_fill(wp, wp->w_botline); | |
| 1826 if (wp->w_empty_rows > wp->w_filler_rows) | |
| 1827 wp->w_empty_rows -= wp->w_filler_rows; | |
| 1828 else | |
| 1829 { | |
| 1830 wp->w_filler_rows = wp->w_empty_rows; | |
| 1831 wp->w_empty_rows = 0; | |
| 1832 } | |
| 1833 } | |
| 1834 #endif | |
| 1835 } | |
| 1836 } | |
| 1837 | |
| 1838 /* | |
| 1839 * Recompute topline to put the cursor at the bottom of the window. | |
| 1840 * Scroll at least "min_scroll" lines. | |
| 1841 * If "set_topbot" is TRUE, set topline and botline first (for "zb"). | |
| 1842 * This is messy stuff!!! | |
| 1843 */ | |
| 1844 void | |
|
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1845 scroll_cursor_bot(int min_scroll, int set_topbot) |
| 7 | 1846 { |
| 1847 int used; | |
| 1848 int scrolled = 0; | |
| 1849 int extra = 0; | |
| 1850 int i; | |
| 1851 linenr_T line_count; | |
| 1852 linenr_T old_topline = curwin->w_topline; | |
| 1853 lineoff_T loff; | |
| 1854 lineoff_T boff; | |
| 1855 #ifdef FEAT_DIFF | |
| 1856 int old_topfill = curwin->w_topfill; | |
| 1857 int fill_below_window; | |
| 1858 #endif | |
| 1859 linenr_T old_botline = curwin->w_botline; | |
| 1860 linenr_T old_valid = curwin->w_valid; | |
| 1861 int old_empty_rows = curwin->w_empty_rows; | |
| 1862 linenr_T cln; /* Cursor Line Number */ | |
| 1863 | |
| 1864 cln = curwin->w_cursor.lnum; | |
| 1865 if (set_topbot) | |
| 1866 { | |
| 1867 used = 0; | |
| 1868 curwin->w_botline = cln + 1; | |
| 1869 #ifdef FEAT_DIFF | |
| 1870 loff.fill = 0; | |
| 1871 #endif | |
| 1872 for (curwin->w_topline = curwin->w_botline; | |
| 1873 curwin->w_topline > 1; | |
| 1874 curwin->w_topline = loff.lnum) | |
| 1875 { | |
| 1876 loff.lnum = curwin->w_topline; | |
| 1877 topline_back(&loff); | |
|
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1878 if (loff.height == MAXCOL || used + loff.height > curwin->w_height) |
| 7 | 1879 break; |
| 1880 used += loff.height; | |
| 1881 #ifdef FEAT_DIFF | |
| 1882 curwin->w_topfill = loff.fill; | |
| 1883 #endif | |
| 1884 } | |
| 1885 set_empty_rows(curwin, used); | |
| 1886 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 1887 if (curwin->w_topline != old_topline | |
| 1888 #ifdef FEAT_DIFF | |
| 1889 || curwin->w_topfill != old_topfill | |
| 1890 #endif | |
| 1891 ) | |
| 1892 curwin->w_valid &= ~(VALID_WROW|VALID_CROW); | |
| 1893 } | |
| 1894 else | |
| 1895 validate_botline(); | |
| 1896 | |
| 1897 /* The lines of the cursor line itself are always used. */ | |
| 1898 #ifdef FEAT_DIFF | |
| 1899 used = plines_nofill(cln); | |
| 1900 #else | |
| 1901 validate_cheight(); | |
| 1902 used = curwin->w_cline_height; | |
| 1903 #endif | |
| 1904 | |
| 1905 /* If the cursor is below botline, we will at least scroll by the height | |
| 1906 * of the cursor line. Correct for empty lines, which are really part of | |
| 1907 * botline. */ | |
| 1908 if (cln >= curwin->w_botline) | |
| 1909 { | |
| 1910 scrolled = used; | |
| 1911 if (cln == curwin->w_botline) | |
| 1912 scrolled -= curwin->w_empty_rows; | |
| 1913 } | |
| 1914 | |
| 1915 /* | |
| 1916 * Stop counting lines to scroll when | |
| 1917 * - hitting start of the file | |
| 1918 * - scrolled nothing or at least 'sj' lines | |
| 1919 * - at least 'so' lines below the cursor | |
| 1920 * - lines between botline and cursor have been counted | |
| 1921 */ | |
| 1922 #ifdef FEAT_FOLDING | |
| 1923 if (!hasFolding(curwin->w_cursor.lnum, &loff.lnum, &boff.lnum)) | |
| 1924 #endif | |
| 1925 { | |
| 1926 loff.lnum = cln; | |
| 1927 boff.lnum = cln; | |
| 1928 } | |
| 1929 #ifdef FEAT_DIFF | |
| 1930 loff.fill = 0; | |
| 1931 boff.fill = 0; | |
| 1932 fill_below_window = diff_check_fill(curwin, curwin->w_botline) | |
| 1933 - curwin->w_filler_rows; | |
| 1934 #endif | |
| 1935 | |
| 1936 while (loff.lnum > 1) | |
| 1937 { | |
| 1938 /* Stop when scrolled nothing or at least "min_scroll", found "extra" | |
| 1939 * context for 'scrolloff' and counted all lines below the window. */ | |
| 1940 if ((((scrolled <= 0 || scrolled >= min_scroll) | |
| 1941 && extra >= ( | |
| 1942 #ifdef FEAT_MOUSE | |
| 1121 | 1943 mouse_dragging > 0 ? mouse_dragging - 1 : |
| 7 | 1944 #endif |
| 1945 p_so)) | |
| 1946 || boff.lnum + 1 > curbuf->b_ml.ml_line_count) | |
| 1947 && loff.lnum <= curwin->w_botline | |
| 1948 #ifdef FEAT_DIFF | |
| 1949 && (loff.lnum < curwin->w_botline | |
| 1950 || loff.fill >= fill_below_window) | |
| 1951 #endif | |
| 1952 ) | |
| 1953 break; | |
| 1954 | |
| 1955 /* Add one line above */ | |
| 1956 topline_back(&loff); | |
|
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1957 if (loff.height == MAXCOL) |
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1958 used = MAXCOL; |
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1959 else |
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1960 used += loff.height; |
| 7 | 1961 if (used > curwin->w_height) |
| 1962 break; | |
| 1963 if (loff.lnum >= curwin->w_botline | |
| 1964 #ifdef FEAT_DIFF | |
| 1965 && (loff.lnum > curwin->w_botline | |
| 1966 || loff.fill <= fill_below_window) | |
| 1967 #endif | |
| 1968 ) | |
| 1969 { | |
| 1970 /* Count screen lines that are below the window. */ | |
| 1971 scrolled += loff.height; | |
| 1972 if (loff.lnum == curwin->w_botline | |
| 1973 #ifdef FEAT_DIFF | |
| 1974 && boff.fill == 0 | |
| 1975 #endif | |
| 1976 ) | |
| 1977 scrolled -= curwin->w_empty_rows; | |
| 1978 } | |
| 1979 | |
| 1980 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
| 1981 { | |
| 1982 /* Add one line below */ | |
| 1983 botline_forw(&boff); | |
| 1984 used += boff.height; | |
| 1985 if (used > curwin->w_height) | |
| 1986 break; | |
| 1987 if (extra < ( | |
| 1988 #ifdef FEAT_MOUSE | |
| 1989 mouse_dragging > 0 ? mouse_dragging - 1 : | |
| 1990 #endif | |
| 1991 p_so) || scrolled < min_scroll) | |
| 1992 { | |
| 1993 extra += boff.height; | |
| 1994 if (boff.lnum >= curwin->w_botline | |
| 1995 #ifdef FEAT_DIFF | |
| 1996 || (boff.lnum + 1 == curwin->w_botline | |
| 1997 && boff.fill > curwin->w_filler_rows) | |
| 1998 #endif | |
| 1999 ) | |
| 2000 { | |
| 2001 /* Count screen lines that are below the window. */ | |
| 2002 scrolled += boff.height; | |
| 2003 if (boff.lnum == curwin->w_botline | |
| 2004 #ifdef FEAT_DIFF | |
| 2005 && boff.fill == 0 | |
| 2006 #endif | |
| 2007 ) | |
| 2008 scrolled -= curwin->w_empty_rows; | |
| 2009 } | |
| 2010 } | |
| 2011 } | |
| 2012 } | |
| 2013 | |
| 2014 /* curwin->w_empty_rows is larger, no need to scroll */ | |
| 2015 if (scrolled <= 0) | |
| 2016 line_count = 0; | |
| 2017 /* more than a screenfull, don't scroll but redraw */ | |
| 2018 else if (used > curwin->w_height) | |
| 2019 line_count = used; | |
| 2020 /* scroll minimal number of lines */ | |
| 2021 else | |
| 2022 { | |
| 2023 line_count = 0; | |
| 2024 #ifdef FEAT_DIFF | |
| 2025 boff.fill = curwin->w_topfill; | |
| 2026 #endif | |
| 2027 boff.lnum = curwin->w_topline - 1; | |
| 2028 for (i = 0; i < scrolled && boff.lnum < curwin->w_botline; ) | |
| 2029 { | |
| 2030 botline_forw(&boff); | |
| 2031 i += boff.height; | |
| 2032 ++line_count; | |
| 2033 } | |
| 2034 if (i < scrolled) /* below curwin->w_botline, don't scroll */ | |
| 2035 line_count = 9999; | |
| 2036 } | |
| 2037 | |
| 2038 /* | |
| 2039 * Scroll up if the cursor is off the bottom of the screen a bit. | |
| 2040 * Otherwise put it at 1/2 of the screen. | |
| 2041 */ | |
| 2042 if (line_count >= curwin->w_height && line_count > min_scroll) | |
| 2043 scroll_cursor_halfway(FALSE); | |
| 2044 else | |
| 2045 scrollup(line_count, TRUE); | |
| 2046 | |
| 2047 /* | |
| 2048 * If topline didn't change we need to restore w_botline and w_empty_rows | |
| 2049 * (we changed them). | |
| 2050 * If topline did change, update_screen() will set botline. | |
| 2051 */ | |
| 2052 if (curwin->w_topline == old_topline && set_topbot) | |
| 2053 { | |
| 2054 curwin->w_botline = old_botline; | |
| 2055 curwin->w_empty_rows = old_empty_rows; | |
| 2056 curwin->w_valid = old_valid; | |
| 2057 } | |
| 2058 curwin->w_valid |= VALID_TOPLINE; | |
| 2059 } | |
| 2060 | |
| 2061 /* | |
| 2062 * Recompute topline to put the cursor halfway the window | |
| 2063 * If "atend" is TRUE, also put it halfway at the end of the file. | |
| 2064 */ | |
| 2065 void | |
|
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diff
changeset
|
2066 scroll_cursor_halfway(int atend) |
| 7 | 2067 { |
| 2068 int above = 0; | |
| 2069 linenr_T topline; | |
| 2070 #ifdef FEAT_DIFF | |
| 2071 int topfill = 0; | |
| 2072 #endif | |
| 2073 int below = 0; | |
| 2074 int used; | |
| 2075 lineoff_T loff; | |
| 2076 lineoff_T boff; | |
| 5661 | 2077 #ifdef FEAT_DIFF |
| 5653 | 2078 linenr_T old_topline = curwin->w_topline; |
| 5661 | 2079 #endif |
| 7 | 2080 |
| 2081 loff.lnum = boff.lnum = curwin->w_cursor.lnum; | |
| 2082 #ifdef FEAT_FOLDING | |
| 2083 (void)hasFolding(loff.lnum, &loff.lnum, &boff.lnum); | |
| 2084 #endif | |
| 2085 #ifdef FEAT_DIFF | |
| 2086 used = plines_nofill(loff.lnum); | |
| 2087 loff.fill = 0; | |
| 2088 boff.fill = 0; | |
| 2089 #else | |
| 2090 used = plines(loff.lnum); | |
| 2091 #endif | |
| 2092 topline = loff.lnum; | |
| 2093 while (topline > 1) | |
| 2094 { | |
| 2095 if (below <= above) /* add a line below the cursor first */ | |
| 2096 { | |
| 2097 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
| 2098 { | |
| 2099 botline_forw(&boff); | |
| 2100 used += boff.height; | |
| 2101 if (used > curwin->w_height) | |
| 2102 break; | |
| 2103 below += boff.height; | |
| 2104 } | |
| 2105 else | |
| 2106 { | |
| 2107 ++below; /* count a "~" line */ | |
| 2108 if (atend) | |
| 2109 ++used; | |
| 2110 } | |
| 2111 } | |
| 2112 | |
| 2113 if (below > above) /* add a line above the cursor */ | |
| 2114 { | |
| 2115 topline_back(&loff); | |
|
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2116 if (loff.height == MAXCOL) |
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2117 used = MAXCOL; |
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2118 else |
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|
2119 used += loff.height; |
| 7 | 2120 if (used > curwin->w_height) |
| 2121 break; | |
| 2122 above += loff.height; | |
| 2123 topline = loff.lnum; | |
| 2124 #ifdef FEAT_DIFF | |
| 2125 topfill = loff.fill; | |
| 2126 #endif | |
| 2127 } | |
| 2128 } | |
| 2129 #ifdef FEAT_FOLDING | |
| 2130 if (!hasFolding(topline, &curwin->w_topline, NULL)) | |
| 2131 #endif | |
| 2132 curwin->w_topline = topline; | |
| 2133 #ifdef FEAT_DIFF | |
| 2134 curwin->w_topfill = topfill; | |
| 5653 | 2135 if (old_topline > curwin->w_topline + curwin->w_height) |
| 2136 curwin->w_botfill = FALSE; | |
| 7 | 2137 check_topfill(curwin, FALSE); |
| 2138 #endif | |
| 2139 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2140 curwin->w_valid |= VALID_TOPLINE; | |
| 2141 } | |
| 2142 | |
| 2143 /* | |
| 2144 * Correct the cursor position so that it is in a part of the screen at least | |
| 2145 * 'so' lines from the top and bottom, if possible. | |
| 2146 * If not possible, put it at the same position as scroll_cursor_halfway(). | |
| 2147 * When called topline must be valid! | |
| 2148 */ | |
| 2149 void | |
|
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|
2150 cursor_correct(void) |
| 7 | 2151 { |
| 2152 int above = 0; /* screen lines above topline */ | |
| 2153 linenr_T topline; | |
| 2154 int below = 0; /* screen lines below botline */ | |
| 2155 linenr_T botline; | |
| 2156 int above_wanted, below_wanted; | |
| 2157 linenr_T cln; /* Cursor Line Number */ | |
| 2158 int max_off; | |
| 2159 | |
| 2160 /* | |
| 2161 * How many lines we would like to have above/below the cursor depends on | |
| 2162 * whether the first/last line of the file is on screen. | |
| 2163 */ | |
| 2164 above_wanted = p_so; | |
| 2165 below_wanted = p_so; | |
| 2166 #ifdef FEAT_MOUSE | |
| 1121 | 2167 if (mouse_dragging > 0) |
| 7 | 2168 { |
| 2169 above_wanted = mouse_dragging - 1; | |
| 2170 below_wanted = mouse_dragging - 1; | |
| 2171 } | |
| 2172 #endif | |
| 2173 if (curwin->w_topline == 1) | |
| 2174 { | |
| 2175 above_wanted = 0; | |
| 2176 max_off = curwin->w_height / 2; | |
| 2177 if (below_wanted > max_off) | |
| 2178 below_wanted = max_off; | |
| 2179 } | |
| 2180 validate_botline(); | |
| 2181 if (curwin->w_botline == curbuf->b_ml.ml_line_count + 1 | |
| 2182 #ifdef FEAT_MOUSE | |
| 1121 | 2183 && mouse_dragging == 0 |
| 7 | 2184 #endif |
| 2185 ) | |
| 2186 { | |
| 2187 below_wanted = 0; | |
| 2188 max_off = (curwin->w_height - 1) / 2; | |
| 2189 if (above_wanted > max_off) | |
| 2190 above_wanted = max_off; | |
| 2191 } | |
| 2192 | |
| 2193 /* | |
| 2194 * If there are sufficient file-lines above and below the cursor, we can | |
| 2195 * return now. | |
| 2196 */ | |
| 2197 cln = curwin->w_cursor.lnum; | |
| 2198 if (cln >= curwin->w_topline + above_wanted | |
| 2199 && cln < curwin->w_botline - below_wanted | |
| 2200 #ifdef FEAT_FOLDING | |
| 2201 && !hasAnyFolding(curwin) | |
| 2202 #endif | |
| 2203 ) | |
| 2204 return; | |
| 2205 | |
| 2206 /* | |
| 2207 * Narrow down the area where the cursor can be put by taking lines from | |
| 2208 * the top and the bottom until: | |
| 2209 * - the desired context lines are found | |
| 2210 * - the lines from the top is past the lines from the bottom | |
| 2211 */ | |
| 2212 topline = curwin->w_topline; | |
| 2213 botline = curwin->w_botline - 1; | |
| 2214 #ifdef FEAT_DIFF | |
| 2215 /* count filler lines as context */ | |
| 2216 above = curwin->w_topfill; | |
| 2217 below = curwin->w_filler_rows; | |
| 2218 #endif | |
| 2219 while ((above < above_wanted || below < below_wanted) && topline < botline) | |
| 2220 { | |
| 2221 if (below < below_wanted && (below <= above || above >= above_wanted)) | |
| 2222 { | |
| 2223 #ifdef FEAT_FOLDING | |
| 2224 if (hasFolding(botline, &botline, NULL)) | |
| 2225 ++below; | |
| 2226 else | |
| 2227 #endif | |
| 2228 below += plines(botline); | |
| 2229 --botline; | |
| 2230 } | |
| 2231 if (above < above_wanted && (above < below || below >= below_wanted)) | |
| 2232 { | |
| 2233 #ifdef FEAT_FOLDING | |
| 2234 if (hasFolding(topline, NULL, &topline)) | |
| 2235 ++above; | |
| 2236 else | |
| 2237 #endif | |
|
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2238 above += PLINES_NOFILL(topline); |
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2239 #ifdef FEAT_DIFF |
| 7 | 2240 /* Count filler lines below this line as context. */ |
| 2241 if (topline < botline) | |
| 2242 above += diff_check_fill(curwin, topline + 1); | |
| 2243 #endif | |
| 2244 ++topline; | |
| 2245 } | |
| 2246 } | |
| 2247 if (topline == botline || botline == 0) | |
| 2248 curwin->w_cursor.lnum = topline; | |
| 2249 else if (topline > botline) | |
| 2250 curwin->w_cursor.lnum = botline; | |
| 2251 else | |
| 2252 { | |
| 2253 if (cln < topline && curwin->w_topline > 1) | |
| 2254 { | |
| 2255 curwin->w_cursor.lnum = topline; | |
| 2256 curwin->w_valid &= | |
| 2257 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
| 2258 } | |
| 2259 if (cln > botline && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 2260 { | |
| 2261 curwin->w_cursor.lnum = botline; | |
| 2262 curwin->w_valid &= | |
| 2263 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
| 2264 } | |
| 2265 } | |
| 2266 curwin->w_valid |= VALID_TOPLINE; | |
| 2267 } | |
| 2268 | |
|
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commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
Christian Brabandt <cb@256bit.org>
parents:
7103
diff
changeset
|
2269 static void get_scroll_overlap(lineoff_T *lp, int dir); |
| 7 | 2270 |
| 2271 /* | |
| 2272 * move screen 'count' pages up or down and update screen | |
| 2273 * | |
| 2274 * return FAIL for failure, OK otherwise | |
| 2275 */ | |
| 2276 int | |
|
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commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2277 onepage(int dir, long count) |
| 7 | 2278 { |
| 2279 long n; | |
| 2280 int retval = OK; | |
| 2281 lineoff_T loff; | |
| 2282 linenr_T old_topline = curwin->w_topline; | |
| 2283 | |
| 2284 if (curbuf->b_ml.ml_line_count == 1) /* nothing to do */ | |
| 2285 { | |
| 2286 beep_flush(); | |
| 2287 return FAIL; | |
| 2288 } | |
| 2289 | |
| 2290 for ( ; count > 0; --count) | |
| 2291 { | |
| 2292 validate_botline(); | |
| 2293 /* | |
| 2294 * It's an error to move a page up when the first line is already on | |
| 2295 * the screen. It's an error to move a page down when the last line | |
| 2296 * is on the screen and the topline is 'scrolloff' lines from the | |
| 2297 * last line. | |
| 2298 */ | |
| 2299 if (dir == FORWARD | |
| 2300 ? ((curwin->w_topline >= curbuf->b_ml.ml_line_count - p_so) | |
| 2301 && curwin->w_botline > curbuf->b_ml.ml_line_count) | |
| 2302 : (curwin->w_topline == 1 | |
| 2303 #ifdef FEAT_DIFF | |
| 2304 && curwin->w_topfill == | |
| 2305 diff_check_fill(curwin, curwin->w_topline) | |
| 2306 #endif | |
| 2307 )) | |
| 2308 { | |
| 2309 beep_flush(); | |
| 2310 retval = FAIL; | |
| 2311 break; | |
| 2312 } | |
| 2313 | |
| 2314 #ifdef FEAT_DIFF | |
| 2315 loff.fill = 0; | |
| 2316 #endif | |
| 2317 if (dir == FORWARD) | |
| 2318 { | |
| 164 | 2319 if (firstwin == lastwin && p_window > 0 && p_window < Rows - 1) |
| 7 | 2320 { |
| 164 | 2321 /* Vi compatible scrolling */ |
| 2322 if (p_window <= 2) | |
| 2323 ++curwin->w_topline; | |
| 2324 else | |
| 2325 curwin->w_topline += p_window - 2; | |
| 2326 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
| 2327 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
| 2328 curwin->w_cursor.lnum = curwin->w_topline; | |
| 2329 } | |
| 2330 else if (curwin->w_botline > curbuf->b_ml.ml_line_count) | |
| 2331 { | |
| 2332 /* at end of file */ | |
| 7 | 2333 curwin->w_topline = curbuf->b_ml.ml_line_count; |
| 2334 #ifdef FEAT_DIFF | |
| 2335 curwin->w_topfill = 0; | |
| 2336 #endif | |
| 2337 curwin->w_valid &= ~(VALID_WROW|VALID_CROW); | |
| 2338 } | |
| 2339 else | |
| 2340 { | |
| 2341 /* For the overlap, start with the line just below the window | |
| 2342 * and go upwards. */ | |
| 2343 loff.lnum = curwin->w_botline; | |
| 2344 #ifdef FEAT_DIFF | |
| 2345 loff.fill = diff_check_fill(curwin, loff.lnum) | |
| 2346 - curwin->w_filler_rows; | |
| 2347 #endif | |
| 2348 get_scroll_overlap(&loff, -1); | |
| 2349 curwin->w_topline = loff.lnum; | |
| 2350 #ifdef FEAT_DIFF | |
| 2351 curwin->w_topfill = loff.fill; | |
| 2352 check_topfill(curwin, FALSE); | |
| 2353 #endif | |
| 2354 curwin->w_cursor.lnum = curwin->w_topline; | |
| 2355 curwin->w_valid &= ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW| | |
| 2356 VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2357 } | |
| 2358 } | |
| 2359 else /* dir == BACKWARDS */ | |
| 2360 { | |
| 2361 #ifdef FEAT_DIFF | |
| 2362 if (curwin->w_topline == 1) | |
| 2363 { | |
| 2364 /* Include max number of filler lines */ | |
| 2365 max_topfill(); | |
| 2366 continue; | |
| 2367 } | |
| 2368 #endif | |
| 164 | 2369 if (firstwin == lastwin && p_window > 0 && p_window < Rows - 1) |
| 2370 { | |
| 2371 /* Vi compatible scrolling (sort of) */ | |
| 2372 if (p_window <= 2) | |
| 2373 --curwin->w_topline; | |
| 2374 else | |
| 2375 curwin->w_topline -= p_window - 2; | |
| 2376 if (curwin->w_topline < 1) | |
| 2377 curwin->w_topline = 1; | |
| 2378 curwin->w_cursor.lnum = curwin->w_topline + p_window - 1; | |
| 2379 if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count) | |
| 2380 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; | |
| 2381 continue; | |
| 2382 } | |
| 2383 | |
| 7 | 2384 /* Find the line at the top of the window that is going to be the |
| 2385 * line at the bottom of the window. Make sure this results in | |
| 2386 * the same line as before doing CTRL-F. */ | |
| 2387 loff.lnum = curwin->w_topline - 1; | |
| 2388 #ifdef FEAT_DIFF | |
| 2389 loff.fill = diff_check_fill(curwin, loff.lnum + 1) | |
| 2390 - curwin->w_topfill; | |
| 2391 #endif | |
| 2392 get_scroll_overlap(&loff, 1); | |
| 2393 | |
| 2394 if (loff.lnum >= curbuf->b_ml.ml_line_count) | |
| 2395 { | |
| 2396 loff.lnum = curbuf->b_ml.ml_line_count; | |
| 2397 #ifdef FEAT_DIFF | |
| 2398 loff.fill = 0; | |
| 2399 } | |
| 2400 else | |
| 2401 { | |
| 2402 botline_topline(&loff); | |
| 2403 #endif | |
| 2404 } | |
| 2405 curwin->w_cursor.lnum = loff.lnum; | |
| 2406 | |
| 2407 /* Find the line just above the new topline to get the right line | |
| 2408 * at the bottom of the window. */ | |
| 2409 n = 0; | |
| 2410 while (n <= curwin->w_height && loff.lnum >= 1) | |
| 2411 { | |
| 2412 topline_back(&loff); | |
|
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diff
changeset
|
2413 if (loff.height == MAXCOL) |
|
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parents:
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diff
changeset
|
2414 n = MAXCOL; |
|
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parents:
2070
diff
changeset
|
2415 else |
|
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parents:
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diff
changeset
|
2416 n += loff.height; |
| 7 | 2417 } |
|
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parents:
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diff
changeset
|
2418 if (loff.lnum < 1) /* at begin of file */ |
| 7 | 2419 { |
| 2420 curwin->w_topline = 1; | |
| 2421 #ifdef FEAT_DIFF | |
| 2422 max_topfill(); | |
| 2423 #endif | |
| 2424 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 2425 } | |
| 2426 else | |
| 2427 { | |
| 2428 /* Go two lines forward again. */ | |
| 2429 #ifdef FEAT_DIFF | |
| 2430 topline_botline(&loff); | |
| 2431 #endif | |
| 2432 botline_forw(&loff); | |
| 2433 botline_forw(&loff); | |
| 2434 #ifdef FEAT_DIFF | |
| 2435 botline_topline(&loff); | |
| 2436 #endif | |
| 2437 #ifdef FEAT_FOLDING | |
| 2438 /* We're at the wrong end of a fold now. */ | |
| 2439 (void)hasFolding(loff.lnum, &loff.lnum, NULL); | |
| 2440 #endif | |
| 2441 | |
| 2442 /* Always scroll at least one line. Avoid getting stuck on | |
| 2443 * very long lines. */ | |
| 2444 if (loff.lnum >= curwin->w_topline | |
| 2445 #ifdef FEAT_DIFF | |
| 2446 && (loff.lnum > curwin->w_topline | |
| 2447 || loff.fill >= curwin->w_topfill) | |
| 2448 #endif | |
| 2449 ) | |
| 2450 { | |
| 2451 #ifdef FEAT_DIFF | |
| 2452 /* First try using the maximum number of filler lines. If | |
| 2453 * that's not enough, backup one line. */ | |
| 2454 loff.fill = curwin->w_topfill; | |
| 2455 if (curwin->w_topfill < diff_check_fill(curwin, | |
| 2456 curwin->w_topline)) | |
| 2457 max_topfill(); | |
| 2458 if (curwin->w_topfill == loff.fill) | |
| 2459 #endif | |
| 2460 { | |
| 2461 --curwin->w_topline; | |
| 2462 #ifdef FEAT_DIFF | |
| 2463 curwin->w_topfill = 0; | |
| 2464 #endif | |
| 2465 } | |
| 2466 comp_botline(curwin); | |
| 2467 curwin->w_cursor.lnum = curwin->w_botline - 1; | |
| 5764 | 2468 curwin->w_valid &= |
| 2469 ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW|VALID_CROW); | |
| 7 | 2470 } |
| 2471 else | |
| 2472 { | |
| 2473 curwin->w_topline = loff.lnum; | |
| 2474 #ifdef FEAT_DIFF | |
| 2475 curwin->w_topfill = loff.fill; | |
| 2476 check_topfill(curwin, FALSE); | |
| 2477 #endif | |
| 2478 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 2479 } | |
| 2480 } | |
| 2481 } | |
| 2482 } | |
| 2483 #ifdef FEAT_FOLDING | |
| 2484 foldAdjustCursor(); | |
| 2485 #endif | |
| 2486 cursor_correct(); | |
| 161 | 2487 if (retval == OK) |
| 2488 beginline(BL_SOL | BL_FIX); | |
| 7 | 2489 curwin->w_valid &= ~(VALID_WCOL|VALID_WROW|VALID_VIRTCOL); |
| 2490 | |
| 2491 /* | |
| 2492 * Avoid the screen jumping up and down when 'scrolloff' is non-zero. | |
| 2493 * But make sure we scroll at least one line (happens with mix of long | |
| 2494 * wrapping lines and non-wrapping line). | |
| 2495 */ | |
| 2496 if (retval == OK && dir == FORWARD && check_top_offset()) | |
| 2497 { | |
| 2498 scroll_cursor_top(1, FALSE); | |
| 2499 if (curwin->w_topline <= old_topline | |
| 2500 && old_topline < curbuf->b_ml.ml_line_count) | |
| 2501 { | |
| 2502 curwin->w_topline = old_topline + 1; | |
| 2503 #ifdef FEAT_FOLDING | |
| 2504 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 2505 #endif | |
| 2506 } | |
| 2507 } | |
| 2508 | |
| 2509 redraw_later(VALID); | |
| 2510 return retval; | |
| 2511 } | |
| 2512 | |
| 2513 /* | |
| 2514 * Decide how much overlap to use for page-up or page-down scrolling. | |
| 2515 * This is symmetric, so that doing both keeps the same lines displayed. | |
| 2516 * Three lines are examined: | |
| 2517 * | |
| 2518 * before CTRL-F after CTRL-F / before CTRL-B | |
| 2519 * etc. l1 | |
| 2520 * l1 last but one line ------------ | |
| 2521 * l2 last text line l2 top text line | |
| 2522 * ------------- l3 second text line | |
| 2523 * l3 etc. | |
| 2524 */ | |
| 2525 static void | |
|
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commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2526 get_scroll_overlap(lineoff_T *lp, int dir) |
| 7 | 2527 { |
| 2528 int h1, h2, h3, h4; | |
| 2529 int min_height = curwin->w_height - 2; | |
| 2530 lineoff_T loff0, loff1, loff2; | |
| 2531 | |
| 2532 #ifdef FEAT_DIFF | |
| 2533 if (lp->fill > 0) | |
| 2534 lp->height = 1; | |
| 2535 else | |
| 2536 lp->height = plines_nofill(lp->lnum); | |
| 2537 #else | |
| 2538 lp->height = plines(lp->lnum); | |
| 2539 #endif | |
| 2540 h1 = lp->height; | |
| 2541 if (h1 > min_height) | |
| 2542 return; /* no overlap */ | |
| 2543 | |
| 2544 loff0 = *lp; | |
| 2545 if (dir > 0) | |
| 2546 botline_forw(lp); | |
| 2547 else | |
| 2548 topline_back(lp); | |
| 2549 h2 = lp->height; | |
| 3968 | 2550 if (h2 == MAXCOL || h2 + h1 > min_height) |
| 7 | 2551 { |
| 2552 *lp = loff0; /* no overlap */ | |
| 2553 return; | |
| 2554 } | |
| 2555 | |
| 2556 loff1 = *lp; | |
| 2557 if (dir > 0) | |
| 2558 botline_forw(lp); | |
| 2559 else | |
| 2560 topline_back(lp); | |
| 2561 h3 = lp->height; | |
| 3968 | 2562 if (h3 == MAXCOL || h3 + h2 > min_height) |
| 7 | 2563 { |
| 2564 *lp = loff0; /* no overlap */ | |
| 2565 return; | |
| 2566 } | |
| 2567 | |
| 2568 loff2 = *lp; | |
| 2569 if (dir > 0) | |
| 2570 botline_forw(lp); | |
| 2571 else | |
| 2572 topline_back(lp); | |
| 2573 h4 = lp->height; | |
| 3968 | 2574 if (h4 == MAXCOL || h4 + h3 + h2 > min_height || h3 + h2 + h1 > min_height) |
| 7 | 2575 *lp = loff1; /* 1 line overlap */ |
| 2576 else | |
| 2577 *lp = loff2; /* 2 lines overlap */ | |
| 2578 return; | |
| 2579 } | |
| 2580 | |
| 2581 /* #define KEEP_SCREEN_LINE */ | |
| 2582 /* | |
| 2583 * Scroll 'scroll' lines up or down. | |
| 2584 */ | |
| 2585 void | |
|
7829
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commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2586 halfpage(int flag, linenr_T Prenum) |
| 7 | 2587 { |
| 2588 long scrolled = 0; | |
| 2589 int i; | |
| 2590 int n; | |
| 2591 int room; | |
| 2592 | |
| 2593 if (Prenum) | |
| 2594 curwin->w_p_scr = (Prenum > curwin->w_height) ? | |
| 2595 curwin->w_height : Prenum; | |
| 2596 n = (curwin->w_p_scr <= curwin->w_height) ? | |
| 2597 curwin->w_p_scr : curwin->w_height; | |
| 2598 | |
| 2599 validate_botline(); | |
| 2600 room = curwin->w_empty_rows; | |
| 2601 #ifdef FEAT_DIFF | |
| 2602 room += curwin->w_filler_rows; | |
| 2603 #endif | |
| 2604 if (flag) | |
| 2605 { | |
| 2606 /* | |
| 2607 * scroll the text up | |
| 2608 */ | |
| 2609 while (n > 0 && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 2610 { | |
| 2611 #ifdef FEAT_DIFF | |
| 2612 if (curwin->w_topfill > 0) | |
| 2613 { | |
| 2614 i = 1; | |
| 2615 if (--n < 0 && scrolled > 0) | |
| 2616 break; | |
| 2617 --curwin->w_topfill; | |
| 2618 } | |
| 2619 else | |
| 2620 #endif | |
| 2621 { | |
|
7103
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commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2622 i = PLINES_NOFILL(curwin->w_topline); |
| 7 | 2623 n -= i; |
| 2624 if (n < 0 && scrolled > 0) | |
| 2625 break; | |
| 2626 #ifdef FEAT_FOLDING | |
| 2627 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
| 2628 #endif | |
| 2629 ++curwin->w_topline; | |
| 2630 #ifdef FEAT_DIFF | |
| 2631 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 2632 #endif | |
| 2633 | |
| 2634 #ifndef KEEP_SCREEN_LINE | |
| 2635 if (curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
| 2636 { | |
| 2637 ++curwin->w_cursor.lnum; | |
| 2638 curwin->w_valid &= | |
| 2639 ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
| 2640 } | |
| 2641 #endif | |
| 2642 } | |
| 2643 curwin->w_valid &= ~(VALID_CROW|VALID_WROW); | |
| 2644 scrolled += i; | |
| 2645 | |
| 2646 /* | |
| 2647 * Correct w_botline for changed w_topline. | |
| 2648 * Won't work when there are filler lines. | |
| 2649 */ | |
| 2650 #ifdef FEAT_DIFF | |
| 2651 if (curwin->w_p_diff) | |
| 2652 curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2653 else | |
| 2654 #endif | |
| 2655 { | |
| 2656 room += i; | |
| 2657 do | |
| 2658 { | |
| 2659 i = plines(curwin->w_botline); | |
| 2660 if (i > room) | |
| 2661 break; | |
| 2662 #ifdef FEAT_FOLDING | |
| 2663 (void)hasFolding(curwin->w_botline, NULL, | |
| 2664 &curwin->w_botline); | |
| 2665 #endif | |
| 2666 ++curwin->w_botline; | |
| 2667 room -= i; | |
| 2668 } while (curwin->w_botline <= curbuf->b_ml.ml_line_count); | |
| 2669 } | |
| 2670 } | |
| 2671 | |
| 2672 #ifndef KEEP_SCREEN_LINE | |
| 2673 /* | |
| 2674 * When hit bottom of the file: move cursor down. | |
| 2675 */ | |
| 2676 if (n > 0) | |
| 2677 { | |
| 2678 # ifdef FEAT_FOLDING | |
| 2679 if (hasAnyFolding(curwin)) | |
| 2680 { | |
| 2681 while (--n >= 0 | |
| 2682 && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
| 2683 { | |
| 2684 (void)hasFolding(curwin->w_cursor.lnum, NULL, | |
| 2685 &curwin->w_cursor.lnum); | |
| 2686 ++curwin->w_cursor.lnum; | |
| 2687 } | |
| 2688 } | |
| 2689 else | |
| 2690 # endif | |
| 2691 curwin->w_cursor.lnum += n; | |
| 2692 check_cursor_lnum(); | |
| 2693 } | |
| 2694 #else | |
| 2695 /* try to put the cursor in the same screen line */ | |
| 2696 while ((curwin->w_cursor.lnum < curwin->w_topline || scrolled > 0) | |
| 2697 && curwin->w_cursor.lnum < curwin->w_botline - 1) | |
| 2698 { | |
| 2699 scrolled -= plines(curwin->w_cursor.lnum); | |
| 2700 if (scrolled < 0 && curwin->w_cursor.lnum >= curwin->w_topline) | |
| 2701 break; | |
| 2702 # ifdef FEAT_FOLDING | |
| 2703 (void)hasFolding(curwin->w_cursor.lnum, NULL, | |
| 2704 &curwin->w_cursor.lnum); | |
| 2705 # endif | |
| 2706 ++curwin->w_cursor.lnum; | |
| 2707 } | |
| 2708 #endif | |
| 2709 } | |
| 2710 else | |
| 2711 { | |
| 2712 /* | |
| 2713 * scroll the text down | |
| 2714 */ | |
| 2715 while (n > 0 && curwin->w_topline > 1) | |
| 2716 { | |
| 2717 #ifdef FEAT_DIFF | |
| 2718 if (curwin->w_topfill < diff_check_fill(curwin, curwin->w_topline)) | |
| 2719 { | |
| 2720 i = 1; | |
| 2721 if (--n < 0 && scrolled > 0) | |
| 2722 break; | |
| 2723 ++curwin->w_topfill; | |
| 2724 } | |
| 2725 else | |
| 2726 #endif | |
| 2727 { | |
|
7103
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commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2728 i = PLINES_NOFILL(curwin->w_topline - 1); |
| 7 | 2729 n -= i; |
| 2730 if (n < 0 && scrolled > 0) | |
| 2731 break; | |
| 2732 --curwin->w_topline; | |
| 2733 #ifdef FEAT_FOLDING | |
| 2734 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 2735 #endif | |
| 2736 #ifdef FEAT_DIFF | |
| 2737 curwin->w_topfill = 0; | |
| 2738 #endif | |
| 2739 } | |
| 2740 curwin->w_valid &= ~(VALID_CROW|VALID_WROW| | |
| 2741 VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2742 scrolled += i; | |
| 2743 #ifndef KEEP_SCREEN_LINE | |
| 2744 if (curwin->w_cursor.lnum > 1) | |
| 2745 { | |
| 2746 --curwin->w_cursor.lnum; | |
| 2747 curwin->w_valid &= ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
| 2748 } | |
| 2749 #endif | |
| 2750 } | |
| 2751 #ifndef KEEP_SCREEN_LINE | |
| 2752 /* | |
| 2753 * When hit top of the file: move cursor up. | |
| 2754 */ | |
| 2755 if (n > 0) | |
| 2756 { | |
| 2757 if (curwin->w_cursor.lnum <= (linenr_T)n) | |
| 2758 curwin->w_cursor.lnum = 1; | |
| 2759 else | |
| 2760 # ifdef FEAT_FOLDING | |
| 2761 if (hasAnyFolding(curwin)) | |
| 2762 { | |
| 2763 while (--n >= 0 && curwin->w_cursor.lnum > 1) | |
| 2764 { | |
| 2765 --curwin->w_cursor.lnum; | |
| 2766 (void)hasFolding(curwin->w_cursor.lnum, | |
| 2767 &curwin->w_cursor.lnum, NULL); | |
| 2768 } | |
| 2769 } | |
| 2770 else | |
| 2771 # endif | |
| 2772 curwin->w_cursor.lnum -= n; | |
| 2773 } | |
| 2774 #else | |
| 2775 /* try to put the cursor in the same screen line */ | |
| 2776 scrolled += n; /* move cursor when topline is 1 */ | |
| 2777 while (curwin->w_cursor.lnum > curwin->w_topline | |
| 2778 && (scrolled > 0 || curwin->w_cursor.lnum >= curwin->w_botline)) | |
| 2779 { | |
| 2780 scrolled -= plines(curwin->w_cursor.lnum - 1); | |
| 2781 if (scrolled < 0 && curwin->w_cursor.lnum < curwin->w_botline) | |
| 2782 break; | |
| 2783 --curwin->w_cursor.lnum; | |
| 2784 # ifdef FEAT_FOLDING | |
| 2785 foldAdjustCursor(); | |
| 2786 # endif | |
| 2787 } | |
| 2788 #endif | |
| 2789 } | |
| 2790 # ifdef FEAT_FOLDING | |
| 2791 /* Move cursor to first line of closed fold. */ | |
| 2792 foldAdjustCursor(); | |
| 2793 # endif | |
| 2794 #ifdef FEAT_DIFF | |
| 2795 check_topfill(curwin, !flag); | |
| 2796 #endif | |
| 2797 cursor_correct(); | |
| 2798 beginline(BL_SOL | BL_FIX); | |
| 2799 redraw_later(VALID); | |
| 2800 } | |
|
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2801 |
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2802 #if defined(FEAT_CURSORBIND) || defined(PROTO) |
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2803 void |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
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|
2804 do_check_cursorbind(void) |
|
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2805 { |
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|
2806 linenr_T line = curwin->w_cursor.lnum; |
| 3415 | 2807 colnr_T col = curwin->w_cursor.col; |
| 2808 # ifdef FEAT_VIRTUALEDIT | |
| 2809 colnr_T coladd = curwin->w_cursor.coladd; | |
| 2810 # endif | |
| 3433 | 2811 colnr_T curswant = curwin->w_curswant; |
| 2812 int set_curswant = curwin->w_set_curswant; | |
|
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2813 win_T *old_curwin = curwin; |
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2814 buf_T *old_curbuf = curbuf; |
| 2693 | 2815 int restart_edit_save; |
|
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2816 int old_VIsual_select = VIsual_select; |
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2817 int old_VIsual_active = VIsual_active; |
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2818 |
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2819 /* |
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2820 * loop through the cursorbound windows |
|
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2821 */ |
|
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|
2822 VIsual_select = VIsual_active = 0; |
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|
2823 for (curwin = firstwin; curwin; curwin = curwin->w_next) |
|
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2824 { |
|
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|
2825 curbuf = curwin->w_buffer; |
|
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2826 /* skip original window and windows with 'noscrollbind' */ |
|
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2827 if (curwin != old_curwin && curwin->w_p_crb) |
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2828 { |
|
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2829 # ifdef FEAT_DIFF |
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2830 if (curwin->w_p_diff) |
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|
2831 curwin->w_cursor.lnum |
|
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|
2832 = diff_get_corresponding_line(old_curbuf, |
|
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|
2833 line, |
|
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|
2834 curbuf, |
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|
2835 curwin->w_cursor.lnum); |
|
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|
2836 else |
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|
2837 # endif |
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2838 curwin->w_cursor.lnum = line; |
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2839 curwin->w_cursor.col = col; |
| 3415 | 2840 # ifdef FEAT_VIRTUALEDIT |
| 2841 curwin->w_cursor.coladd = coladd; | |
| 2842 # endif | |
| 3433 | 2843 curwin->w_curswant = curswant; |
| 2844 curwin->w_set_curswant = set_curswant; | |
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2845 |
| 2693 | 2846 /* Make sure the cursor is in a valid position. Temporarily set |
| 2847 * "restart_edit" to allow the cursor to be beyond the EOL. */ | |
| 2848 restart_edit_save = restart_edit; | |
| 2849 restart_edit = TRUE; | |
|
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2850 check_cursor(); |
| 2693 | 2851 restart_edit = restart_edit_save; |
|
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2852 # ifdef FEAT_MBYTE |
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2853 /* Correct cursor for multi-byte character. */ |
|
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2854 if (has_mbyte) |
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2855 mb_adjust_cursor(); |
|
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2856 # endif |
| 2688 | 2857 redraw_later(VALID); |
|
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2858 |
| 2688 | 2859 /* Only scroll when 'scrollbind' hasn't done this. */ |
| 2860 if (!curwin->w_p_scb) | |
| 2861 update_topline(); | |
|
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2862 # ifdef FEAT_WINDOWS |
|
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2863 curwin->w_redr_status = TRUE; |
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2864 # endif |
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2865 } |
|
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2866 } |
|
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2867 |
|
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2868 /* |
|
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2869 * reset current-window |
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2870 */ |
|
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2871 VIsual_select = old_VIsual_select; |
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2872 VIsual_active = old_VIsual_active; |
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2873 curwin = old_curwin; |
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2874 curbuf = old_curbuf; |
|
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2875 } |
|
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2876 #endif /* FEAT_CURSORBIND */ |