Mercurial > vim
annotate src/move.c @ 12477:68d7bc045dbe v8.0.1118
patch 8.0.1118: FEAT_WINDOWS adds a lot of #ifdefs
commit https://github.com/vim/vim/commit/4033c55eca575777718c0701e26635a0cc47d907
Author: Bram Moolenaar <Bram@vim.org>
Date: Sat Sep 16 20:54:51 2017 +0200
patch 8.0.1118: FEAT_WINDOWS adds a lot of #ifdefs
Problem: FEAT_WINDOWS adds a lot of #ifdefs while it is nearly always
enabled and only adds 7% to the binary size of the tiny build.
Solution: Graduate FEAT_WINDOWS.
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Sat, 16 Sep 2017 21:00:06 +0200 |
| parents | 69af108df70e |
| children | 972ea22c946f |
| rev | line source |
|---|---|
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commit https://github.com/vim/vim/commit/edf3f97ae2af024708ebb4ac614227327033ca47
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1 /* vi:set ts=8 sts=4 sw=4 noet: |
| 7 | 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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commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
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22 static void comp_botline(win_T *wp); |
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37c929c4a073
commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
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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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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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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 | |
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180 /* If there is no valid screen and when the window height is zero just use |
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181 * the cursor line. */ |
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182 if (!screen_valid(TRUE) || curwin->w_height == 0) |
| 6247 | 183 { |
| 184 curwin->w_topline = curwin->w_cursor.lnum; | |
| 185 curwin->w_botline = curwin->w_topline; | |
| 186 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 187 #ifdef FEAT_SCROLLBIND | |
| 188 curwin->w_scbind_pos = 1; | |
| 189 #endif | |
| 190 return; | |
| 191 } | |
| 192 | |
| 7 | 193 check_cursor_moved(curwin); |
| 194 if (curwin->w_valid & VALID_TOPLINE) | |
| 195 return; | |
| 196 | |
| 197 #ifdef FEAT_MOUSE | |
| 198 /* When dragging with the mouse, don't scroll that quickly */ | |
| 1121 | 199 if (mouse_dragging > 0) |
| 7 | 200 p_so = mouse_dragging - 1; |
| 201 #endif | |
| 202 | |
| 203 old_topline = curwin->w_topline; | |
| 204 #ifdef FEAT_DIFF | |
| 205 old_topfill = curwin->w_topfill; | |
| 206 #endif | |
| 207 | |
| 208 /* | |
| 209 * If the buffer is empty, always set topline to 1. | |
| 210 */ | |
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211 if (BUFEMPTY()) /* special case - file is empty */ |
| 7 | 212 { |
| 213 if (curwin->w_topline != 1) | |
| 214 redraw_later(NOT_VALID); | |
| 215 curwin->w_topline = 1; | |
| 216 curwin->w_botline = 2; | |
| 217 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 218 #ifdef FEAT_SCROLLBIND | |
| 219 curwin->w_scbind_pos = 1; | |
| 220 #endif | |
| 221 } | |
| 222 | |
| 223 /* | |
| 224 * If the cursor is above or near the top of the window, scroll the window | |
| 225 * to show the line the cursor is in, with 'scrolloff' context. | |
| 226 */ | |
| 227 else | |
| 228 { | |
| 229 if (curwin->w_topline > 1) | |
| 230 { | |
| 231 /* If the cursor is above topline, scrolling is always needed. | |
| 232 * If the cursor is far below topline and there is no folding, | |
| 233 * scrolling down is never needed. */ | |
| 234 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 235 check_topline = TRUE; | |
| 236 else if (check_top_offset()) | |
| 237 check_topline = TRUE; | |
| 238 } | |
| 239 #ifdef FEAT_DIFF | |
| 240 /* Check if there are more filler lines than allowed. */ | |
| 241 if (!check_topline && curwin->w_topfill > diff_check_fill(curwin, | |
| 242 curwin->w_topline)) | |
| 243 check_topline = TRUE; | |
| 244 #endif | |
| 245 | |
| 246 if (check_topline) | |
| 247 { | |
| 248 halfheight = curwin->w_height / 2 - 1; | |
| 249 if (halfheight < 2) | |
| 250 halfheight = 2; | |
| 251 | |
| 252 #ifdef FEAT_FOLDING | |
| 253 if (hasAnyFolding(curwin)) | |
| 254 { | |
| 255 /* Count the number of logical lines between the cursor and | |
| 256 * topline + p_so (approximation of how much will be | |
| 257 * scrolled). */ | |
| 258 n = 0; | |
| 259 for (lnum = curwin->w_cursor.lnum; | |
| 260 lnum < curwin->w_topline + p_so; ++lnum) | |
| 261 { | |
| 262 ++n; | |
| 263 /* stop at end of file or when we know we are far off */ | |
| 264 if (lnum >= curbuf->b_ml.ml_line_count || n >= halfheight) | |
| 265 break; | |
| 266 (void)hasFolding(lnum, NULL, &lnum); | |
| 267 } | |
| 268 } | |
| 269 else | |
| 270 #endif | |
| 271 n = curwin->w_topline + p_so - curwin->w_cursor.lnum; | |
| 272 | |
| 273 /* If we weren't very close to begin with, we scroll to put the | |
| 274 * cursor in the middle of the window. Otherwise put the cursor | |
| 275 * near the top of the window. */ | |
| 276 if (n >= halfheight) | |
| 277 scroll_cursor_halfway(FALSE); | |
| 278 else | |
| 279 { | |
| 532 | 280 scroll_cursor_top(scrolljump_value(), FALSE); |
| 7 | 281 check_botline = TRUE; |
| 282 } | |
| 283 } | |
| 284 | |
| 285 else | |
| 286 { | |
| 287 #ifdef FEAT_FOLDING | |
| 288 /* Make sure topline is the first line of a fold. */ | |
| 289 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 290 #endif | |
| 291 check_botline = TRUE; | |
| 292 } | |
| 293 } | |
| 294 | |
| 295 /* | |
| 296 * If the cursor is below the bottom of the window, scroll the window | |
| 297 * to put the cursor on the window. | |
| 298 * When w_botline is invalid, recompute it first, to avoid a redraw later. | |
| 299 * If w_botline was approximated, we might need a redraw later in a few | |
| 300 * cases, but we don't want to spend (a lot of) time recomputing w_botline | |
| 301 * for every small change. | |
| 302 */ | |
| 303 if (check_botline) | |
| 304 { | |
| 305 if (!(curwin->w_valid & VALID_BOTLINE_AP)) | |
| 306 validate_botline(); | |
| 307 | |
| 308 if (curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 309 { | |
| 1744 | 310 if (curwin->w_cursor.lnum < curwin->w_botline) |
| 311 { | |
| 312 if (((long)curwin->w_cursor.lnum | |
| 7 | 313 >= (long)curwin->w_botline - p_so |
| 314 #ifdef FEAT_FOLDING | |
| 315 || hasAnyFolding(curwin) | |
| 316 #endif | |
| 317 )) | |
| 1744 | 318 { |
| 7 | 319 lineoff_T loff; |
| 320 | |
| 1744 | 321 /* Cursor is (a few lines) above botline, check if there are |
| 322 * 'scrolloff' window lines below the cursor. If not, need to | |
| 323 * scroll. */ | |
| 7 | 324 n = curwin->w_empty_rows; |
| 325 loff.lnum = curwin->w_cursor.lnum; | |
| 326 #ifdef FEAT_FOLDING | |
| 327 /* In a fold go to its last line. */ | |
| 328 (void)hasFolding(loff.lnum, NULL, &loff.lnum); | |
| 329 #endif | |
| 330 #ifdef FEAT_DIFF | |
| 331 loff.fill = 0; | |
| 332 n += curwin->w_filler_rows; | |
| 333 #endif | |
| 334 loff.height = 0; | |
| 335 while (loff.lnum < curwin->w_botline | |
| 336 #ifdef FEAT_DIFF | |
| 337 && (loff.lnum + 1 < curwin->w_botline || loff.fill == 0) | |
| 338 #endif | |
| 339 ) | |
| 340 { | |
| 341 n += loff.height; | |
| 342 if (n >= p_so) | |
| 343 break; | |
| 344 botline_forw(&loff); | |
| 345 } | |
| 346 if (n >= p_so) | |
| 347 /* sufficient context, no need to scroll */ | |
| 348 check_botline = FALSE; | |
| 1744 | 349 } |
| 350 else | |
| 351 /* sufficient context, no need to scroll */ | |
| 352 check_botline = FALSE; | |
| 7 | 353 } |
| 354 if (check_botline) | |
| 355 { | |
| 356 #ifdef FEAT_FOLDING | |
| 357 if (hasAnyFolding(curwin)) | |
| 358 { | |
| 359 /* Count the number of logical lines between the cursor and | |
| 360 * botline - p_so (approximation of how much will be | |
| 361 * scrolled). */ | |
| 362 line_count = 0; | |
| 363 for (lnum = curwin->w_cursor.lnum; | |
| 364 lnum >= curwin->w_botline - p_so; --lnum) | |
| 365 { | |
| 366 ++line_count; | |
| 367 /* stop at end of file or when we know we are far off */ | |
| 368 if (lnum <= 0 || line_count > curwin->w_height + 1) | |
| 369 break; | |
| 370 (void)hasFolding(lnum, &lnum, NULL); | |
| 371 } | |
| 372 } | |
| 373 else | |
| 374 #endif | |
| 375 line_count = curwin->w_cursor.lnum - curwin->w_botline | |
| 376 + 1 + p_so; | |
| 377 if (line_count <= curwin->w_height + 1) | |
| 532 | 378 scroll_cursor_bot(scrolljump_value(), FALSE); |
| 7 | 379 else |
| 380 scroll_cursor_halfway(FALSE); | |
| 381 } | |
| 382 } | |
| 383 } | |
| 384 curwin->w_valid |= VALID_TOPLINE; | |
| 385 | |
| 386 /* | |
| 387 * Need to redraw when topline changed. | |
| 388 */ | |
| 389 if (curwin->w_topline != old_topline | |
| 390 #ifdef FEAT_DIFF | |
| 391 || curwin->w_topfill != old_topfill | |
| 392 #endif | |
| 393 ) | |
| 394 { | |
| 3318 | 395 dollar_vcol = -1; |
| 740 | 396 if (curwin->w_skipcol != 0) |
| 7 | 397 { |
| 398 curwin->w_skipcol = 0; | |
| 399 redraw_later(NOT_VALID); | |
| 400 } | |
| 401 else | |
| 402 redraw_later(VALID); | |
| 403 /* May need to set w_skipcol when cursor in w_topline. */ | |
| 404 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 405 validate_cursor(); | |
| 406 } | |
| 407 | |
| 408 #ifdef FEAT_MOUSE | |
| 409 p_so = save_so; | |
| 410 #endif | |
| 411 } | |
| 412 | |
| 413 /* | |
| 532 | 414 * Return the scrolljump value to use for the current window. |
| 415 * When 'scrolljump' is positive use it as-is. | |
| 416 * When 'scrolljump' is negative use it as a percentage of the window height. | |
| 417 */ | |
| 418 static int | |
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diff
changeset
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419 scrolljump_value(void) |
| 532 | 420 { |
| 421 if (p_sj >= 0) | |
| 422 return (int)p_sj; | |
| 423 return (curwin->w_height * -p_sj) / 100; | |
| 424 } | |
| 425 | |
| 426 /* | |
| 7 | 427 * Return TRUE when there are not 'scrolloff' lines above the cursor for the |
| 428 * current window. | |
| 429 */ | |
| 430 static int | |
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diff
changeset
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431 check_top_offset(void) |
| 7 | 432 { |
| 433 lineoff_T loff; | |
| 434 int n; | |
| 435 | |
| 436 if (curwin->w_cursor.lnum < curwin->w_topline + p_so | |
| 437 #ifdef FEAT_FOLDING | |
| 438 || hasAnyFolding(curwin) | |
| 439 #endif | |
| 440 ) | |
| 441 { | |
| 442 loff.lnum = curwin->w_cursor.lnum; | |
| 443 #ifdef FEAT_DIFF | |
| 444 loff.fill = 0; | |
| 445 n = curwin->w_topfill; /* always have this context */ | |
| 446 #else | |
| 447 n = 0; | |
| 448 #endif | |
| 449 /* Count the visible screen lines above the cursor line. */ | |
| 450 while (n < p_so) | |
| 451 { | |
| 452 topline_back(&loff); | |
| 453 /* Stop when included a line above the window. */ | |
| 454 if (loff.lnum < curwin->w_topline | |
| 455 #ifdef FEAT_DIFF | |
| 456 || (loff.lnum == curwin->w_topline && loff.fill > 0) | |
| 457 #endif | |
| 458 ) | |
| 459 break; | |
| 460 n += loff.height; | |
| 461 } | |
| 462 if (n < p_so) | |
| 463 return TRUE; | |
| 464 } | |
| 465 return FALSE; | |
| 466 } | |
| 467 | |
| 468 void | |
|
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diff
changeset
|
469 update_curswant(void) |
| 7 | 470 { |
| 471 if (curwin->w_set_curswant) | |
| 472 { | |
| 473 validate_virtcol(); | |
| 474 curwin->w_curswant = curwin->w_virtcol; | |
| 475 curwin->w_set_curswant = FALSE; | |
| 476 } | |
| 477 } | |
| 478 | |
| 479 /* | |
| 480 * Check if the cursor has moved. Set the w_valid flag accordingly. | |
| 481 */ | |
| 482 void | |
|
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483 check_cursor_moved(win_T *wp) |
| 7 | 484 { |
| 485 if (wp->w_cursor.lnum != wp->w_valid_cursor.lnum) | |
| 486 { | |
| 487 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 488 |VALID_CHEIGHT|VALID_CROW|VALID_TOPLINE); | |
| 489 wp->w_valid_cursor = wp->w_cursor; | |
| 490 wp->w_valid_leftcol = wp->w_leftcol; | |
| 491 } | |
| 492 else if (wp->w_cursor.col != wp->w_valid_cursor.col | |
| 493 || wp->w_leftcol != wp->w_valid_leftcol | |
| 494 #ifdef FEAT_VIRTUALEDIT | |
| 495 || wp->w_cursor.coladd != wp->w_valid_cursor.coladd | |
| 496 #endif | |
| 497 ) | |
| 498 { | |
| 499 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL); | |
| 500 wp->w_valid_cursor.col = wp->w_cursor.col; | |
| 501 wp->w_valid_leftcol = wp->w_leftcol; | |
| 502 #ifdef FEAT_VIRTUALEDIT | |
| 503 wp->w_valid_cursor.coladd = wp->w_cursor.coladd; | |
| 504 #endif | |
| 505 } | |
| 506 } | |
| 507 | |
| 508 /* | |
| 509 * Call this function when some window settings have changed, which require | |
| 510 * the cursor position, botline and topline to be recomputed and the window to | |
| 511 * be redrawn. E.g, when changing the 'wrap' option or folding. | |
| 512 */ | |
| 513 void | |
|
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|
514 changed_window_setting(void) |
| 7 | 515 { |
| 516 changed_window_setting_win(curwin); | |
| 517 } | |
| 518 | |
| 519 void | |
|
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520 changed_window_setting_win(win_T *wp) |
| 7 | 521 { |
| 522 wp->w_lines_valid = 0; | |
| 523 changed_line_abv_curs_win(wp); | |
| 524 wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP|VALID_TOPLINE); | |
| 525 redraw_win_later(wp, NOT_VALID); | |
| 526 } | |
| 527 | |
| 528 /* | |
| 529 * Set wp->w_topline to a certain number. | |
| 530 */ | |
| 531 void | |
|
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changeset
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532 set_topline(win_T *wp, linenr_T lnum) |
| 7 | 533 { |
| 534 #ifdef FEAT_FOLDING | |
| 535 /* go to first of folded lines */ | |
| 536 (void)hasFoldingWin(wp, lnum, &lnum, NULL, TRUE, NULL); | |
| 537 #endif | |
| 538 /* Approximate the value of w_botline */ | |
| 539 wp->w_botline += lnum - wp->w_topline; | |
| 540 wp->w_topline = lnum; | |
| 1744 | 541 #ifdef FEAT_AUTOCMD |
| 542 wp->w_topline_was_set = TRUE; | |
| 543 #endif | |
| 7 | 544 #ifdef FEAT_DIFF |
| 545 wp->w_topfill = 0; | |
| 546 #endif | |
| 547 wp->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_TOPLINE); | |
| 548 /* Don't set VALID_TOPLINE here, 'scrolloff' needs to be checked. */ | |
| 549 redraw_later(VALID); | |
| 550 } | |
| 551 | |
| 552 /* | |
| 553 * Call this function when the length of the cursor line (in screen | |
| 554 * characters) has changed, and the change is before the cursor. | |
| 555 * Need to take care of w_botline separately! | |
| 556 */ | |
| 557 void | |
|
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changeset
|
558 changed_cline_bef_curs(void) |
| 7 | 559 { |
| 560 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 561 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 562 } | |
| 563 | |
| 564 void | |
|
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changeset
|
565 changed_cline_bef_curs_win(win_T *wp) |
| 7 | 566 { |
| 567 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 568 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 569 } | |
| 570 | |
| 571 /* | |
| 572 * Call this function when the length of a line (in screen characters) above | |
| 573 * the cursor have changed. | |
| 574 * Need to take care of w_botline separately! | |
| 575 */ | |
| 576 void | |
|
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changeset
|
577 changed_line_abv_curs(void) |
| 7 | 578 { |
| 579 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
| 580 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 581 } | |
| 582 | |
| 583 void | |
|
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changeset
|
584 changed_line_abv_curs_win(win_T *wp) |
| 7 | 585 { |
| 586 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
| 587 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 588 } | |
| 589 | |
| 590 /* | |
| 591 * Make sure the value of curwin->w_botline is valid. | |
| 592 */ | |
| 593 void | |
|
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594 validate_botline(void) |
| 7 | 595 { |
| 596 if (!(curwin->w_valid & VALID_BOTLINE)) | |
| 597 comp_botline(curwin); | |
| 598 } | |
| 599 | |
| 600 /* | |
| 601 * Mark curwin->w_botline as invalid (because of some change in the buffer). | |
| 602 */ | |
| 603 void | |
|
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604 invalidate_botline(void) |
| 7 | 605 { |
| 606 curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 607 } | |
| 608 | |
| 609 void | |
|
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610 invalidate_botline_win(win_T *wp) |
| 7 | 611 { |
| 612 wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 613 } | |
| 614 | |
| 615 void | |
|
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616 approximate_botline_win( |
|
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|
617 win_T *wp) |
| 7 | 618 { |
| 619 wp->w_valid &= ~VALID_BOTLINE; | |
| 620 } | |
| 621 | |
| 622 /* | |
| 623 * Return TRUE if curwin->w_wrow and curwin->w_wcol are valid. | |
| 624 */ | |
| 625 int | |
|
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626 cursor_valid(void) |
| 7 | 627 { |
| 628 check_cursor_moved(curwin); | |
| 629 return ((curwin->w_valid & (VALID_WROW|VALID_WCOL)) == | |
| 630 (VALID_WROW|VALID_WCOL)); | |
| 631 } | |
| 632 | |
| 633 /* | |
| 634 * Validate cursor position. Makes sure w_wrow and w_wcol are valid. | |
| 635 * w_topline must be valid, you may need to call update_topline() first! | |
| 636 */ | |
| 637 void | |
|
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638 validate_cursor(void) |
| 7 | 639 { |
| 640 check_cursor_moved(curwin); | |
| 641 if ((curwin->w_valid & (VALID_WCOL|VALID_WROW)) != (VALID_WCOL|VALID_WROW)) | |
| 642 curs_columns(TRUE); | |
| 643 } | |
| 644 | |
| 645 #if defined(FEAT_GUI) || defined(PROTO) | |
| 646 /* | |
| 647 * validate w_cline_row. | |
| 648 */ | |
| 649 void | |
|
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650 validate_cline_row(void) |
| 7 | 651 { |
| 652 /* | |
| 653 * First make sure that w_topline is valid (after moving the cursor). | |
| 654 */ | |
| 655 update_topline(); | |
| 656 check_cursor_moved(curwin); | |
| 657 if (!(curwin->w_valid & VALID_CROW)) | |
| 6441 | 658 curs_rows(curwin); |
| 7 | 659 } |
| 660 #endif | |
| 661 | |
| 662 /* | |
| 663 * Compute wp->w_cline_row and wp->w_cline_height, based on the current value | |
|
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664 * of wp->w_topline. |
| 7 | 665 */ |
| 666 static void | |
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|
667 curs_rows(win_T *wp) |
| 7 | 668 { |
| 669 linenr_T lnum; | |
| 670 int i; | |
| 671 int all_invalid; | |
| 672 int valid; | |
| 673 #ifdef FEAT_FOLDING | |
| 674 long fold_count; | |
| 675 #endif | |
| 676 | |
| 677 /* Check if wp->w_lines[].wl_size is invalid */ | |
| 678 all_invalid = (!redrawing() | |
| 679 || wp->w_lines_valid == 0 | |
| 680 || wp->w_lines[0].wl_lnum > wp->w_topline); | |
| 681 i = 0; | |
| 682 wp->w_cline_row = 0; | |
| 683 for (lnum = wp->w_topline; lnum < wp->w_cursor.lnum; ++i) | |
| 684 { | |
| 685 valid = FALSE; | |
| 686 if (!all_invalid && i < wp->w_lines_valid) | |
| 687 { | |
| 688 if (wp->w_lines[i].wl_lnum < lnum || !wp->w_lines[i].wl_valid) | |
| 689 continue; /* skip changed or deleted lines */ | |
| 690 if (wp->w_lines[i].wl_lnum == lnum) | |
| 691 { | |
| 692 #ifdef FEAT_FOLDING | |
| 693 /* Check for newly inserted lines below this row, in which | |
| 694 * case we need to check for folded lines. */ | |
| 695 if (!wp->w_buffer->b_mod_set | |
| 696 || wp->w_lines[i].wl_lastlnum < wp->w_cursor.lnum | |
| 697 || wp->w_buffer->b_mod_top | |
| 698 > wp->w_lines[i].wl_lastlnum + 1) | |
| 699 #endif | |
| 700 valid = TRUE; | |
| 701 } | |
| 702 else if (wp->w_lines[i].wl_lnum > lnum) | |
| 703 --i; /* hold at inserted lines */ | |
| 704 } | |
| 705 if (valid | |
| 706 #ifdef FEAT_DIFF | |
| 707 && (lnum != wp->w_topline || !wp->w_p_diff) | |
| 708 #endif | |
| 709 ) | |
| 710 { | |
| 711 #ifdef FEAT_FOLDING | |
| 712 lnum = wp->w_lines[i].wl_lastlnum + 1; | |
| 713 /* Cursor inside folded lines, don't count this row */ | |
| 714 if (lnum > wp->w_cursor.lnum) | |
| 715 break; | |
| 716 #else | |
| 717 ++lnum; | |
| 718 #endif | |
| 719 wp->w_cline_row += wp->w_lines[i].wl_size; | |
| 720 } | |
| 721 else | |
| 722 { | |
| 723 #ifdef FEAT_FOLDING | |
| 724 fold_count = foldedCount(wp, lnum, NULL); | |
| 725 if (fold_count) | |
| 726 { | |
| 727 lnum += fold_count; | |
| 728 if (lnum > wp->w_cursor.lnum) | |
| 729 break; | |
| 730 ++wp->w_cline_row; | |
| 731 } | |
| 732 else | |
| 733 #endif | |
| 734 #ifdef FEAT_DIFF | |
| 735 if (lnum == wp->w_topline) | |
| 736 wp->w_cline_row += plines_win_nofill(wp, lnum++, TRUE) | |
| 737 + wp->w_topfill; | |
| 738 else | |
| 739 #endif | |
| 740 wp->w_cline_row += plines_win(wp, lnum++, TRUE); | |
| 741 } | |
| 742 } | |
| 743 | |
| 744 check_cursor_moved(wp); | |
| 745 if (!(wp->w_valid & VALID_CHEIGHT)) | |
| 746 { | |
| 747 if (all_invalid | |
| 748 || i == wp->w_lines_valid | |
| 749 || (i < wp->w_lines_valid | |
| 750 && (!wp->w_lines[i].wl_valid | |
| 751 || wp->w_lines[i].wl_lnum != wp->w_cursor.lnum))) | |
| 752 { | |
| 753 #ifdef FEAT_DIFF | |
| 754 if (wp->w_cursor.lnum == wp->w_topline) | |
| 755 wp->w_cline_height = plines_win_nofill(wp, wp->w_cursor.lnum, | |
| 756 TRUE) + wp->w_topfill; | |
| 757 else | |
| 758 #endif | |
| 759 wp->w_cline_height = plines_win(wp, wp->w_cursor.lnum, TRUE); | |
| 760 #ifdef FEAT_FOLDING | |
| 761 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
| 762 NULL, NULL, TRUE, NULL); | |
| 763 #endif | |
| 764 } | |
| 765 else if (i > wp->w_lines_valid) | |
| 766 { | |
| 767 /* a line that is too long to fit on the last screen line */ | |
| 768 wp->w_cline_height = 0; | |
| 769 #ifdef FEAT_FOLDING | |
| 770 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
| 771 NULL, NULL, TRUE, NULL); | |
| 772 #endif | |
| 773 } | |
| 774 else | |
| 775 { | |
| 776 wp->w_cline_height = wp->w_lines[i].wl_size; | |
| 777 #ifdef FEAT_FOLDING | |
| 778 wp->w_cline_folded = wp->w_lines[i].wl_folded; | |
| 779 #endif | |
| 780 } | |
| 781 } | |
| 782 | |
| 5764 | 783 redraw_for_cursorline(curwin); |
| 7 | 784 wp->w_valid |= VALID_CROW|VALID_CHEIGHT; |
| 785 | |
| 786 } | |
| 787 | |
| 788 /* | |
| 789 * Validate curwin->w_virtcol only. | |
| 790 */ | |
| 791 void | |
|
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diff
changeset
|
792 validate_virtcol(void) |
| 7 | 793 { |
| 794 validate_virtcol_win(curwin); | |
| 795 } | |
| 796 | |
| 797 /* | |
| 798 * Validate wp->w_virtcol only. | |
| 799 */ | |
| 800 void | |
|
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changeset
|
801 validate_virtcol_win(win_T *wp) |
| 7 | 802 { |
| 803 check_cursor_moved(wp); | |
| 804 if (!(wp->w_valid & VALID_VIRTCOL)) | |
| 805 { | |
| 806 getvvcol(wp, &wp->w_cursor, NULL, &(wp->w_virtcol), NULL); | |
| 807 wp->w_valid |= VALID_VIRTCOL; | |
| 740 | 808 #ifdef FEAT_SYN_HL |
| 752 | 809 if (wp->w_p_cuc |
| 810 # ifdef FEAT_INS_EXPAND | |
| 811 && !pum_visible() | |
| 812 # endif | |
| 813 ) | |
| 740 | 814 redraw_win_later(wp, SOME_VALID); |
| 815 #endif | |
| 7 | 816 } |
| 817 } | |
| 818 | |
| 819 /* | |
| 820 * Validate curwin->w_cline_height only. | |
| 821 */ | |
| 822 static void | |
|
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|
823 validate_cheight(void) |
| 7 | 824 { |
| 825 check_cursor_moved(curwin); | |
| 826 if (!(curwin->w_valid & VALID_CHEIGHT)) | |
| 827 { | |
| 828 #ifdef FEAT_DIFF | |
| 829 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 830 curwin->w_cline_height = plines_nofill(curwin->w_cursor.lnum) | |
| 831 + curwin->w_topfill; | |
| 832 else | |
| 833 #endif | |
| 834 curwin->w_cline_height = plines(curwin->w_cursor.lnum); | |
| 835 #ifdef FEAT_FOLDING | |
| 836 curwin->w_cline_folded = hasFolding(curwin->w_cursor.lnum, NULL, NULL); | |
| 837 #endif | |
| 838 curwin->w_valid |= VALID_CHEIGHT; | |
| 839 } | |
| 840 } | |
| 841 | |
| 842 /* | |
| 1668 | 843 * Validate w_wcol and w_virtcol only. |
| 7 | 844 */ |
| 845 void | |
|
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846 validate_cursor_col(void) |
| 7 | 847 { |
| 848 colnr_T off; | |
| 849 colnr_T col; | |
|
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850 int width; |
| 7 | 851 |
| 852 validate_virtcol(); | |
| 853 if (!(curwin->w_valid & VALID_WCOL)) | |
| 854 { | |
| 855 col = curwin->w_virtcol; | |
| 856 off = curwin_col_off(); | |
| 857 col += off; | |
|
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858 width = W_WIDTH(curwin) - off + curwin_col_off2(); |
| 7 | 859 |
| 860 /* long line wrapping, adjust curwin->w_wrow */ | |
| 1668 | 861 if (curwin->w_p_wrap |
| 862 && col >= (colnr_T)W_WIDTH(curwin) | |
|
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863 && width > 0) |
|
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864 /* use same formula as what is used in curs_columns() */ |
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865 col -= ((col - W_WIDTH(curwin)) / width + 1) * width; |
| 1668 | 866 if (col > (int)curwin->w_leftcol) |
| 867 col -= curwin->w_leftcol; | |
| 868 else | |
| 869 col = 0; | |
| 7 | 870 curwin->w_wcol = col; |
| 1668 | 871 |
| 7 | 872 curwin->w_valid |= VALID_WCOL; |
| 873 } | |
| 874 } | |
| 875 | |
| 876 /* | |
|
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877 * Compute offset of a window, occupied by absolute or relative line number, |
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878 * fold column and sign column (these don't move when scrolling horizontally). |
| 7 | 879 */ |
| 880 int | |
|
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881 win_col_off(win_T *wp) |
| 7 | 882 { |
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883 return (((wp->w_p_nu || wp->w_p_rnu) ? number_width(wp) + 1 : 0) |
| 7 | 884 #ifdef FEAT_CMDWIN |
| 885 + (cmdwin_type == 0 || wp != curwin ? 0 : 1) | |
| 886 #endif | |
| 887 #ifdef FEAT_FOLDING | |
| 888 + wp->w_p_fdc | |
| 889 #endif | |
| 890 #ifdef FEAT_SIGNS | |
|
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891 + (signcolumn_on(wp) ? 2 : 0) |
| 7 | 892 #endif |
| 893 ); | |
| 894 } | |
| 895 | |
| 896 int | |
|
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897 curwin_col_off(void) |
| 7 | 898 { |
| 899 return win_col_off(curwin); | |
| 900 } | |
| 901 | |
| 902 /* | |
| 903 * Return the difference in column offset for the second screen line of a | |
|
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904 * wrapped line. It's 8 if 'number' or 'relativenumber' is on and 'n' is in |
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905 * 'cpoptions'. |
| 7 | 906 */ |
| 907 int | |
|
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908 win_col_off2(win_T *wp) |
| 7 | 909 { |
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910 if ((wp->w_p_nu || wp->w_p_rnu) && vim_strchr(p_cpo, CPO_NUMCOL) != NULL) |
| 13 | 911 return number_width(wp) + 1; |
| 7 | 912 return 0; |
| 913 } | |
| 914 | |
| 915 int | |
|
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916 curwin_col_off2(void) |
| 7 | 917 { |
| 918 return win_col_off2(curwin); | |
| 919 } | |
| 920 | |
| 921 /* | |
| 922 * compute curwin->w_wcol and curwin->w_virtcol. | |
| 923 * Also updates curwin->w_wrow and curwin->w_cline_row. | |
| 924 * Also updates curwin->w_leftcol. | |
| 925 */ | |
| 926 void | |
|
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927 curs_columns( |
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928 int may_scroll) /* when TRUE, may scroll horizontally */ |
| 7 | 929 { |
| 930 int diff; | |
| 931 int extra; /* offset for first screen line */ | |
| 932 int off_left, off_right; | |
| 933 int n; | |
| 934 int p_lines; | |
| 935 int width = 0; | |
| 936 int textwidth; | |
| 937 int new_leftcol; | |
| 938 colnr_T startcol; | |
| 939 colnr_T endcol; | |
| 940 colnr_T prev_skipcol; | |
| 941 | |
| 942 /* | |
| 943 * First make sure that w_topline is valid (after moving the cursor). | |
| 944 */ | |
| 945 update_topline(); | |
| 946 | |
| 947 /* | |
| 948 * Next make sure that w_cline_row is valid. | |
| 949 */ | |
| 950 if (!(curwin->w_valid & VALID_CROW)) | |
| 6441 | 951 curs_rows(curwin); |
| 7 | 952 |
| 953 /* | |
| 954 * Compute the number of virtual columns. | |
| 955 */ | |
| 956 #ifdef FEAT_FOLDING | |
| 957 if (curwin->w_cline_folded) | |
| 958 /* In a folded line the cursor is always in the first column */ | |
| 959 startcol = curwin->w_virtcol = endcol = curwin->w_leftcol; | |
| 960 else | |
| 961 #endif | |
| 962 getvvcol(curwin, &curwin->w_cursor, | |
| 963 &startcol, &(curwin->w_virtcol), &endcol); | |
| 964 | |
| 965 /* remove '$' from change command when cursor moves onto it */ | |
| 966 if (startcol > dollar_vcol) | |
| 3318 | 967 dollar_vcol = -1; |
| 7 | 968 |
| 969 extra = curwin_col_off(); | |
| 970 curwin->w_wcol = curwin->w_virtcol + extra; | |
| 971 endcol += extra; | |
| 972 | |
| 973 /* | |
| 974 * Now compute w_wrow, counting screen lines from w_cline_row. | |
| 975 */ | |
| 976 curwin->w_wrow = curwin->w_cline_row; | |
| 977 | |
| 978 textwidth = W_WIDTH(curwin) - extra; | |
| 979 if (textwidth <= 0) | |
| 980 { | |
| 981 /* No room for text, put cursor in last char of window. */ | |
| 982 curwin->w_wcol = W_WIDTH(curwin) - 1; | |
| 983 curwin->w_wrow = curwin->w_height - 1; | |
| 984 } | |
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985 else if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 986 { |
| 987 width = textwidth + curwin_col_off2(); | |
| 988 | |
| 989 /* long line wrapping, adjust curwin->w_wrow */ | |
| 990 if (curwin->w_wcol >= W_WIDTH(curwin)) | |
| 991 { | |
|
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992 /* this same formula is used in validate_cursor_col() */ |
| 7 | 993 n = (curwin->w_wcol - W_WIDTH(curwin)) / width + 1; |
| 994 curwin->w_wcol -= n * width; | |
| 995 curwin->w_wrow += n; | |
| 996 | |
| 997 #ifdef FEAT_LINEBREAK | |
| 998 /* When cursor wraps to first char of next line in Insert | |
| 999 * mode, the 'showbreak' string isn't shown, backup to first | |
| 1000 * column */ | |
| 1001 if (*p_sbr && *ml_get_cursor() == NUL | |
| 1002 && curwin->w_wcol == (int)vim_strsize(p_sbr)) | |
| 1003 curwin->w_wcol = 0; | |
| 1004 #endif | |
| 1005 } | |
| 1006 } | |
| 1007 | |
| 1008 /* No line wrapping: compute curwin->w_leftcol if scrolling is on and line | |
| 1009 * is not folded. | |
| 1010 * If scrolling is off, curwin->w_leftcol is assumed to be 0 */ | |
| 3263 | 1011 else if (may_scroll |
| 7 | 1012 #ifdef FEAT_FOLDING |
| 1013 && !curwin->w_cline_folded | |
| 1014 #endif | |
| 1015 ) | |
| 1016 { | |
| 1017 /* | |
| 1018 * If Cursor is left of the screen, scroll rightwards. | |
| 1019 * If Cursor is right of the screen, scroll leftwards | |
| 1020 * If we get closer to the edge than 'sidescrolloff', scroll a little | |
| 1021 * extra | |
| 1022 */ | |
| 1023 off_left = (int)startcol - (int)curwin->w_leftcol - p_siso; | |
| 1024 off_right = (int)endcol - (int)(curwin->w_leftcol + W_WIDTH(curwin) | |
| 1025 - p_siso) + 1; | |
| 1026 if (off_left < 0 || off_right > 0) | |
| 1027 { | |
| 1028 if (off_left < 0) | |
| 1029 diff = -off_left; | |
| 1030 else | |
| 1031 diff = off_right; | |
| 1032 | |
| 1033 /* When far off or not enough room on either side, put cursor in | |
| 1034 * middle of window. */ | |
| 1035 if (p_ss == 0 || diff >= textwidth / 2 || off_right >= off_left) | |
| 1036 new_leftcol = curwin->w_wcol - extra - textwidth / 2; | |
| 1037 else | |
| 1038 { | |
| 1039 if (diff < p_ss) | |
| 1040 diff = p_ss; | |
| 1041 if (off_left < 0) | |
| 1042 new_leftcol = curwin->w_leftcol - diff; | |
| 1043 else | |
| 1044 new_leftcol = curwin->w_leftcol + diff; | |
| 1045 } | |
| 1046 if (new_leftcol < 0) | |
| 1047 new_leftcol = 0; | |
| 1048 if (new_leftcol != (int)curwin->w_leftcol) | |
| 1049 { | |
| 1050 curwin->w_leftcol = new_leftcol; | |
| 1051 /* screen has to be redrawn with new curwin->w_leftcol */ | |
| 1052 redraw_later(NOT_VALID); | |
| 1053 } | |
| 1054 } | |
| 1055 curwin->w_wcol -= curwin->w_leftcol; | |
| 1056 } | |
| 1057 else if (curwin->w_wcol > (int)curwin->w_leftcol) | |
| 1058 curwin->w_wcol -= curwin->w_leftcol; | |
| 1059 else | |
| 1060 curwin->w_wcol = 0; | |
| 1061 | |
| 1062 #ifdef FEAT_DIFF | |
| 1063 /* Skip over filler lines. At the top use w_topfill, there | |
| 1064 * may be some filler lines above the window. */ | |
| 1065 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 1066 curwin->w_wrow += curwin->w_topfill; | |
| 1067 else | |
| 1068 curwin->w_wrow += diff_check_fill(curwin, curwin->w_cursor.lnum); | |
| 1069 #endif | |
| 1070 | |
| 1071 prev_skipcol = curwin->w_skipcol; | |
| 1072 | |
| 1073 p_lines = 0; | |
| 1074 if ((curwin->w_wrow >= curwin->w_height | |
| 1075 || ((prev_skipcol > 0 | |
| 1076 || curwin->w_wrow + p_so >= curwin->w_height) | |
| 1077 && (p_lines = | |
| 1078 #ifdef FEAT_DIFF | |
| 1079 plines_win_nofill | |
| 1080 #else | |
| 1081 plines_win | |
| 1082 #endif | |
| 1083 (curwin, curwin->w_cursor.lnum, FALSE)) | |
| 1084 - 1 >= curwin->w_height)) | |
| 1085 && curwin->w_height != 0 | |
| 1086 && curwin->w_cursor.lnum == curwin->w_topline | |
| 1087 && width > 0 | |
|
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1088 && curwin->w_width != 0) |
| 7 | 1089 { |
| 1090 /* Cursor past end of screen. Happens with a single line that does | |
| 1091 * not fit on screen. Find a skipcol to show the text around the | |
| 1092 * cursor. Avoid scrolling all the time. compute value of "extra": | |
| 1093 * 1: Less than "p_so" lines above | |
| 1094 * 2: Less than "p_so" lines below | |
| 1095 * 3: both of them */ | |
| 1096 extra = 0; | |
| 1097 if (curwin->w_skipcol + p_so * width > curwin->w_virtcol) | |
| 1098 extra = 1; | |
| 1099 /* Compute last display line of the buffer line that we want at the | |
| 1100 * bottom of the window. */ | |
| 1101 if (p_lines == 0) | |
| 1102 p_lines = plines_win(curwin, curwin->w_cursor.lnum, FALSE); | |
| 1103 --p_lines; | |
| 1104 if (p_lines > curwin->w_wrow + p_so) | |
| 1105 n = curwin->w_wrow + p_so; | |
| 1106 else | |
| 1107 n = p_lines; | |
| 1108 if ((colnr_T)n >= curwin->w_height + curwin->w_skipcol / width) | |
| 1109 extra += 2; | |
| 1110 | |
| 1111 if (extra == 3 || p_lines < p_so * 2) | |
| 1112 { | |
| 1113 /* not enough room for 'scrolloff', put cursor in the middle */ | |
| 1114 n = curwin->w_virtcol / width; | |
| 1115 if (n > curwin->w_height / 2) | |
| 1116 n -= curwin->w_height / 2; | |
| 1117 else | |
| 1118 n = 0; | |
| 1119 /* don't skip more than necessary */ | |
| 1120 if (n > p_lines - curwin->w_height + 1) | |
| 1121 n = p_lines - curwin->w_height + 1; | |
| 1122 curwin->w_skipcol = n * width; | |
| 1123 } | |
| 1124 else if (extra == 1) | |
| 1125 { | |
| 1126 /* less then 'scrolloff' lines above, decrease skipcol */ | |
| 1127 extra = (curwin->w_skipcol + p_so * width - curwin->w_virtcol | |
| 1128 + width - 1) / width; | |
| 1129 if (extra > 0) | |
| 1130 { | |
| 1131 if ((colnr_T)(extra * width) > curwin->w_skipcol) | |
| 1132 extra = curwin->w_skipcol / width; | |
| 1133 curwin->w_skipcol -= extra * width; | |
| 1134 } | |
| 1135 } | |
| 1136 else if (extra == 2) | |
| 1137 { | |
| 1138 /* less then 'scrolloff' lines below, increase skipcol */ | |
| 1139 endcol = (n - curwin->w_height + 1) * width; | |
| 1140 while (endcol > curwin->w_virtcol) | |
| 1141 endcol -= width; | |
| 1142 if (endcol > curwin->w_skipcol) | |
| 1143 curwin->w_skipcol = endcol; | |
| 1144 } | |
| 1145 | |
| 1146 curwin->w_wrow -= curwin->w_skipcol / width; | |
| 1147 if (curwin->w_wrow >= curwin->w_height) | |
| 1148 { | |
| 1149 /* small window, make sure cursor is in it */ | |
| 1150 extra = curwin->w_wrow - curwin->w_height + 1; | |
| 1151 curwin->w_skipcol += extra * width; | |
| 1152 curwin->w_wrow -= extra; | |
| 1153 } | |
| 1154 | |
| 1155 extra = ((int)prev_skipcol - (int)curwin->w_skipcol) / width; | |
| 1156 if (extra > 0) | |
| 1157 win_ins_lines(curwin, 0, extra, FALSE, FALSE); | |
| 1158 else if (extra < 0) | |
|
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1159 win_del_lines(curwin, 0, -extra, FALSE, FALSE, 0); |
| 7 | 1160 } |
| 1161 else | |
| 1162 curwin->w_skipcol = 0; | |
| 1163 if (prev_skipcol != curwin->w_skipcol) | |
| 1164 redraw_later(NOT_VALID); | |
| 1165 | |
| 740 | 1166 #ifdef FEAT_SYN_HL |
| 5749 | 1167 /* Redraw when w_virtcol changes and 'cursorcolumn' is set */ |
| 1168 if (curwin->w_p_cuc && (curwin->w_valid & VALID_VIRTCOL) == 0 | |
| 1169 # ifdef FEAT_INS_EXPAND | |
| 1170 && !pum_visible() | |
| 1171 # endif | |
| 1172 ) | |
| 1173 redraw_later(SOME_VALID); | |
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1174 #endif |
| 740 | 1175 |
| 7 | 1176 curwin->w_valid |= VALID_WCOL|VALID_WROW|VALID_VIRTCOL; |
| 1177 } | |
| 1178 | |
| 1179 /* | |
| 1180 * Scroll the current window down by "line_count" logical lines. "CTRL-Y" | |
| 1181 */ | |
| 1182 void | |
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1183 scrolldown( |
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1184 long line_count, |
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1185 int byfold UNUSED) /* TRUE: count a closed fold as one line */ |
| 7 | 1186 { |
| 1187 long done = 0; /* total # of physical lines done */ | |
| 1188 int wrow; | |
| 1189 int moved = FALSE; | |
| 1190 | |
| 1191 #ifdef FEAT_FOLDING | |
| 1192 linenr_T first; | |
| 1193 | |
| 1194 /* Make sure w_topline is at the first of a sequence of folded lines. */ | |
| 1195 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 1196 #endif | |
| 1197 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1198 while (line_count-- > 0) | |
| 1199 { | |
| 1200 #ifdef FEAT_DIFF | |
| 1980 | 1201 if (curwin->w_topfill < diff_check(curwin, curwin->w_topline) |
| 1202 && curwin->w_topfill < curwin->w_height - 1) | |
| 7 | 1203 { |
| 1204 ++curwin->w_topfill; | |
| 1205 ++done; | |
| 1206 } | |
| 1207 else | |
| 1208 #endif | |
| 1209 { | |
| 1210 if (curwin->w_topline == 1) | |
| 1211 break; | |
| 1212 --curwin->w_topline; | |
| 1213 #ifdef FEAT_DIFF | |
| 1214 curwin->w_topfill = 0; | |
| 1215 #endif | |
| 1216 #ifdef FEAT_FOLDING | |
| 1217 /* A sequence of folded lines only counts for one logical line */ | |
| 1218 if (hasFolding(curwin->w_topline, &first, NULL)) | |
| 1219 { | |
| 1220 ++done; | |
| 1221 if (!byfold) | |
| 1222 line_count -= curwin->w_topline - first - 1; | |
| 1223 curwin->w_botline -= curwin->w_topline - first; | |
| 1224 curwin->w_topline = first; | |
| 1225 } | |
| 1226 else | |
| 1227 #endif | |
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1228 done += PLINES_NOFILL(curwin->w_topline); |
| 7 | 1229 } |
| 1230 --curwin->w_botline; /* approximate w_botline */ | |
| 1231 invalidate_botline(); | |
| 1232 } | |
| 1233 curwin->w_wrow += done; /* keep w_wrow updated */ | |
| 1234 curwin->w_cline_row += done; /* keep w_cline_row updated */ | |
| 1235 | |
| 1236 #ifdef FEAT_DIFF | |
| 1237 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 1238 curwin->w_cline_row = 0; | |
| 1239 check_topfill(curwin, TRUE); | |
| 1240 #endif | |
| 1241 | |
| 1242 /* | |
| 1243 * Compute the row number of the last row of the cursor line | |
| 1244 * and move the cursor onto the displayed part of the window. | |
| 1245 */ | |
| 1246 wrow = curwin->w_wrow; | |
|
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1247 if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 1248 { |
| 1249 validate_virtcol(); | |
| 1250 validate_cheight(); | |
| 1251 wrow += curwin->w_cline_height - 1 - | |
| 1252 curwin->w_virtcol / W_WIDTH(curwin); | |
| 1253 } | |
| 1254 while (wrow >= curwin->w_height && curwin->w_cursor.lnum > 1) | |
| 1255 { | |
| 1256 #ifdef FEAT_FOLDING | |
| 1257 if (hasFolding(curwin->w_cursor.lnum, &first, NULL)) | |
| 1258 { | |
| 1259 --wrow; | |
| 1260 if (first == 1) | |
| 1261 curwin->w_cursor.lnum = 1; | |
| 1262 else | |
| 1263 curwin->w_cursor.lnum = first - 1; | |
| 1264 } | |
| 1265 else | |
| 1266 #endif | |
| 1267 wrow -= plines(curwin->w_cursor.lnum--); | |
| 1268 curwin->w_valid &= | |
| 1269 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
| 1270 moved = TRUE; | |
| 1271 } | |
| 1272 if (moved) | |
| 1273 { | |
| 1274 #ifdef FEAT_FOLDING | |
| 1275 /* Move cursor to first line of closed fold. */ | |
| 1276 foldAdjustCursor(); | |
| 1277 #endif | |
| 1278 coladvance(curwin->w_curswant); | |
| 1279 } | |
| 1280 } | |
| 1281 | |
| 1282 /* | |
| 1283 * Scroll the current window up by "line_count" logical lines. "CTRL-E" | |
| 1284 */ | |
| 1285 void | |
|
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1286 scrollup( |
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commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
1287 long line_count, |
|
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
1288 int byfold UNUSED) /* TRUE: count a closed fold as one line */ |
| 7 | 1289 { |
| 1290 #if defined(FEAT_FOLDING) || defined(FEAT_DIFF) | |
| 1291 linenr_T lnum; | |
| 1292 | |
| 1293 if ( | |
| 1294 # ifdef FEAT_FOLDING | |
| 1295 (byfold && hasAnyFolding(curwin)) | |
| 1296 # ifdef FEAT_DIFF | |
| 1297 || | |
| 1298 # endif | |
| 1299 # endif | |
| 1300 # ifdef FEAT_DIFF | |
| 1301 curwin->w_p_diff | |
| 1302 # endif | |
| 1303 ) | |
| 1304 { | |
| 1305 /* count each sequence of folded lines as one logical line */ | |
| 1306 lnum = curwin->w_topline; | |
| 1307 while (line_count--) | |
| 1308 { | |
| 1309 # ifdef FEAT_DIFF | |
| 1310 if (curwin->w_topfill > 0) | |
| 1311 --curwin->w_topfill; | |
| 1312 else | |
| 1313 # endif | |
| 1314 { | |
| 1315 # ifdef FEAT_FOLDING | |
| 1316 if (byfold) | |
| 1317 (void)hasFolding(lnum, NULL, &lnum); | |
| 1318 # endif | |
| 1319 if (lnum >= curbuf->b_ml.ml_line_count) | |
| 1320 break; | |
| 1321 ++lnum; | |
| 1322 # ifdef FEAT_DIFF | |
| 1323 curwin->w_topfill = diff_check_fill(curwin, lnum); | |
| 1324 # endif | |
| 1325 } | |
| 1326 } | |
| 1327 /* approximate w_botline */ | |
| 1328 curwin->w_botline += lnum - curwin->w_topline; | |
| 1329 curwin->w_topline = lnum; | |
| 1330 } | |
| 1331 else | |
| 1332 #endif | |
| 1333 { | |
| 1334 curwin->w_topline += line_count; | |
| 1335 curwin->w_botline += line_count; /* approximate w_botline */ | |
| 1336 } | |
| 1337 | |
| 1338 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
| 1339 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
| 1340 if (curwin->w_botline > curbuf->b_ml.ml_line_count + 1) | |
| 1341 curwin->w_botline = curbuf->b_ml.ml_line_count + 1; | |
| 1342 | |
| 1343 #ifdef FEAT_DIFF | |
| 1344 check_topfill(curwin, FALSE); | |
| 1345 #endif | |
| 1346 | |
| 1347 #ifdef FEAT_FOLDING | |
| 1348 if (hasAnyFolding(curwin)) | |
| 1349 /* Make sure w_topline is at the first of a sequence of folded lines. */ | |
| 1350 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 1351 #endif | |
| 1352 | |
| 1353 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1354 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 1355 { | |
| 1356 curwin->w_cursor.lnum = curwin->w_topline; | |
| 1357 curwin->w_valid &= | |
| 1358 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
| 1359 coladvance(curwin->w_curswant); | |
| 1360 } | |
| 1361 } | |
| 1362 | |
| 1363 #ifdef FEAT_DIFF | |
| 1364 /* | |
| 1365 * Don't end up with too many filler lines in the window. | |
| 1366 */ | |
| 1367 void | |
|
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parents:
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diff
changeset
|
1368 check_topfill( |
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commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
1369 win_T *wp, |
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commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1370 int down) /* when TRUE scroll down when not enough space */ |
| 7 | 1371 { |
| 1372 int n; | |
| 1373 | |
| 1374 if (wp->w_topfill > 0) | |
| 1375 { | |
| 1376 n = plines_win_nofill(wp, wp->w_topline, TRUE); | |
| 1377 if (wp->w_topfill + n > wp->w_height) | |
| 1378 { | |
| 1379 if (down && wp->w_topline > 1) | |
| 1380 { | |
| 1381 --wp->w_topline; | |
| 1382 wp->w_topfill = 0; | |
| 1383 } | |
| 1384 else | |
| 1385 { | |
| 1386 wp->w_topfill = wp->w_height - n; | |
| 1387 if (wp->w_topfill < 0) | |
| 1388 wp->w_topfill = 0; | |
| 1389 } | |
| 1390 } | |
| 1391 } | |
| 1392 } | |
| 1393 | |
| 1394 /* | |
| 1395 * Use as many filler lines as possible for w_topline. Make sure w_topline | |
| 1396 * is still visible. | |
| 1397 */ | |
| 1398 static void | |
|
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Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1399 max_topfill(void) |
| 7 | 1400 { |
| 1401 int n; | |
| 1402 | |
| 1403 n = plines_nofill(curwin->w_topline); | |
| 1404 if (n >= curwin->w_height) | |
| 1405 curwin->w_topfill = 0; | |
| 1406 else | |
| 1407 { | |
| 1408 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 1409 if (curwin->w_topfill + n > curwin->w_height) | |
| 1410 curwin->w_topfill = curwin->w_height - n; | |
| 1411 } | |
| 1412 } | |
| 1413 #endif | |
| 1414 | |
| 1415 #if defined(FEAT_INS_EXPAND) || defined(PROTO) | |
| 1416 /* | |
| 1417 * Scroll the screen one line down, but don't do it if it would move the | |
| 1418 * cursor off the screen. | |
| 1419 */ | |
| 1420 void | |
|
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Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1421 scrolldown_clamp(void) |
| 7 | 1422 { |
| 1423 int end_row; | |
| 1424 #ifdef FEAT_DIFF | |
| 1425 int can_fill = (curwin->w_topfill | |
| 1426 < diff_check_fill(curwin, curwin->w_topline)); | |
| 1427 #endif | |
| 1428 | |
| 1429 if (curwin->w_topline <= 1 | |
| 1430 #ifdef FEAT_DIFF | |
| 1431 && !can_fill | |
| 1432 #endif | |
| 1433 ) | |
| 1434 return; | |
| 1435 | |
| 1436 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1437 | |
| 1438 /* | |
| 1439 * Compute the row number of the last row of the cursor line | |
| 1440 * and make sure it doesn't go off the screen. Make sure the cursor | |
| 1441 * doesn't go past 'scrolloff' lines from the screen end. | |
| 1442 */ | |
| 1443 end_row = curwin->w_wrow; | |
| 1444 #ifdef FEAT_DIFF | |
| 1445 if (can_fill) | |
| 1446 ++end_row; | |
| 1447 else | |
| 1448 end_row += plines_nofill(curwin->w_topline - 1); | |
| 1449 #else | |
| 1450 end_row += plines(curwin->w_topline - 1); | |
| 1451 #endif | |
|
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1452 if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 1453 { |
| 1454 validate_cheight(); | |
| 1455 validate_virtcol(); | |
| 1456 end_row += curwin->w_cline_height - 1 - | |
| 1457 curwin->w_virtcol / W_WIDTH(curwin); | |
| 1458 } | |
| 1459 if (end_row < curwin->w_height - p_so) | |
| 1460 { | |
| 1461 #ifdef FEAT_DIFF | |
| 1462 if (can_fill) | |
| 1463 { | |
| 1464 ++curwin->w_topfill; | |
| 1465 check_topfill(curwin, TRUE); | |
| 1466 } | |
| 1467 else | |
| 1468 { | |
| 1469 --curwin->w_topline; | |
| 1470 curwin->w_topfill = 0; | |
| 1471 } | |
| 1472 #else | |
| 1473 --curwin->w_topline; | |
| 1474 #endif | |
| 1475 #ifdef FEAT_FOLDING | |
| 7009 | 1476 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
| 7 | 1477 #endif |
| 1478 --curwin->w_botline; /* approximate w_botline */ | |
| 1479 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1480 } | |
| 1481 } | |
| 1482 | |
| 1483 /* | |
| 1484 * Scroll the screen one line up, but don't do it if it would move the cursor | |
| 1485 * off the screen. | |
| 1486 */ | |
| 1487 void | |
|
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diff
changeset
|
1488 scrollup_clamp(void) |
| 7 | 1489 { |
| 1490 int start_row; | |
| 1491 | |
| 1492 if (curwin->w_topline == curbuf->b_ml.ml_line_count | |
| 1493 #ifdef FEAT_DIFF | |
| 1494 && curwin->w_topfill == 0 | |
| 1495 #endif | |
| 1496 ) | |
| 1497 return; | |
| 1498 | |
| 1499 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1500 | |
| 1501 /* | |
| 1502 * Compute the row number of the first row of the cursor line | |
| 1503 * and make sure it doesn't go off the screen. Make sure the cursor | |
| 1504 * doesn't go before 'scrolloff' lines from the screen start. | |
| 1505 */ | |
| 1506 #ifdef FEAT_DIFF | |
| 1507 start_row = curwin->w_wrow - plines_nofill(curwin->w_topline) | |
| 1508 - curwin->w_topfill; | |
| 1509 #else | |
| 1510 start_row = curwin->w_wrow - plines(curwin->w_topline); | |
| 1511 #endif | |
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1512 if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 1513 { |
| 1514 validate_virtcol(); | |
| 1515 start_row -= curwin->w_virtcol / W_WIDTH(curwin); | |
| 1516 } | |
| 1517 if (start_row >= p_so) | |
| 1518 { | |
| 1519 #ifdef FEAT_DIFF | |
| 1520 if (curwin->w_topfill > 0) | |
| 1521 --curwin->w_topfill; | |
| 1522 else | |
| 1523 #endif | |
| 36 | 1524 { |
| 1525 #ifdef FEAT_FOLDING | |
| 1526 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
| 1527 #endif | |
| 7 | 1528 ++curwin->w_topline; |
| 36 | 1529 } |
| 7 | 1530 ++curwin->w_botline; /* approximate w_botline */ |
| 1531 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1532 } | |
| 1533 } | |
| 1534 #endif /* FEAT_INS_EXPAND */ | |
| 1535 | |
| 1536 /* | |
| 1537 * Add one line above "lp->lnum". This can be a filler line, a closed fold or | |
| 1538 * a (wrapped) text line. Uses and sets "lp->fill". | |
| 1539 * Returns the height of the added line in "lp->height". | |
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1540 * Lines above the first one are incredibly high: MAXCOL. |
| 7 | 1541 */ |
| 1542 static void | |
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parents:
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diff
changeset
|
1543 topline_back(lineoff_T *lp) |
| 7 | 1544 { |
| 1545 #ifdef FEAT_DIFF | |
| 1546 if (lp->fill < diff_check_fill(curwin, lp->lnum)) | |
| 1547 { | |
| 1548 /* Add a filler line. */ | |
| 1549 ++lp->fill; | |
| 1550 lp->height = 1; | |
| 1551 } | |
| 1552 else | |
| 1553 #endif | |
| 1554 { | |
| 1555 --lp->lnum; | |
| 1556 #ifdef FEAT_DIFF | |
| 1557 lp->fill = 0; | |
| 1558 #endif | |
| 1559 if (lp->lnum < 1) | |
| 1560 lp->height = MAXCOL; | |
| 1561 else | |
| 1562 #ifdef FEAT_FOLDING | |
| 1563 if (hasFolding(lp->lnum, &lp->lnum, NULL)) | |
| 1564 /* Add a closed fold */ | |
| 1565 lp->height = 1; | |
| 1566 else | |
| 1567 #endif | |
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diff
changeset
|
1568 lp->height = PLINES_NOFILL(lp->lnum); |
| 7 | 1569 } |
| 1570 } | |
| 1571 | |
| 1572 /* | |
| 1573 * Add one line below "lp->lnum". This can be a filler line, a closed fold or | |
| 1574 * a (wrapped) text line. Uses and sets "lp->fill". | |
| 1575 * Returns the height of the added line in "lp->height". | |
| 1576 * Lines below the last one are incredibly high. | |
| 1577 */ | |
| 1578 static void | |
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parents:
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diff
changeset
|
1579 botline_forw(lineoff_T *lp) |
| 7 | 1580 { |
| 1581 #ifdef FEAT_DIFF | |
| 1582 if (lp->fill < diff_check_fill(curwin, lp->lnum + 1)) | |
| 1583 { | |
| 1584 /* Add a filler line. */ | |
| 1585 ++lp->fill; | |
| 1586 lp->height = 1; | |
| 1587 } | |
| 1588 else | |
| 1589 #endif | |
| 1590 { | |
| 1591 ++lp->lnum; | |
| 1592 #ifdef FEAT_DIFF | |
| 1593 lp->fill = 0; | |
| 1594 #endif | |
| 1595 if (lp->lnum > curbuf->b_ml.ml_line_count) | |
| 1596 lp->height = MAXCOL; | |
| 1597 else | |
| 1598 #ifdef FEAT_FOLDING | |
| 1599 if (hasFolding(lp->lnum, NULL, &lp->lnum)) | |
| 1600 /* Add a closed fold */ | |
| 1601 lp->height = 1; | |
| 1602 else | |
| 1603 #endif | |
| 1604 { | |
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parents:
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diff
changeset
|
1605 lp->height = PLINES_NOFILL(lp->lnum); |
| 7 | 1606 } |
| 1607 } | |
| 1608 } | |
| 1609 | |
| 1610 #ifdef FEAT_DIFF | |
| 1611 /* | |
| 1612 * Switch from including filler lines below lp->lnum to including filler | |
| 1613 * lines above loff.lnum + 1. This keeps pointing to the same line. | |
| 1614 * When there are no filler lines nothing changes. | |
| 1615 */ | |
| 1616 static void | |
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parents:
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diff
changeset
|
1617 botline_topline(lineoff_T *lp) |
| 7 | 1618 { |
| 1619 if (lp->fill > 0) | |
| 1620 { | |
| 1621 ++lp->lnum; | |
| 1622 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
| 1623 } | |
| 1624 } | |
| 1625 | |
| 1626 /* | |
| 1627 * Switch from including filler lines above lp->lnum to including filler | |
| 1628 * lines below loff.lnum - 1. This keeps pointing to the same line. | |
| 1629 * When there are no filler lines nothing changes. | |
| 1630 */ | |
| 1631 static void | |
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parents:
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diff
changeset
|
1632 topline_botline(lineoff_T *lp) |
| 7 | 1633 { |
| 1634 if (lp->fill > 0) | |
| 1635 { | |
| 1636 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
| 1637 --lp->lnum; | |
| 1638 } | |
| 1639 } | |
| 1640 #endif | |
| 1641 | |
| 1642 /* | |
| 1643 * Recompute topline to put the cursor at the top of the window. | |
| 1644 * Scroll at least "min_scroll" lines. | |
| 1645 * If "always" is TRUE, always set topline (for "zt"). | |
| 1646 */ | |
| 1647 void | |
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diff
changeset
|
1648 scroll_cursor_top(int min_scroll, int always) |
| 7 | 1649 { |
| 1650 int scrolled = 0; | |
| 1651 int extra = 0; | |
| 1652 int used; | |
| 1653 int i; | |
| 1654 linenr_T top; /* just above displayed lines */ | |
| 1655 linenr_T bot; /* just below displayed lines */ | |
| 1656 linenr_T old_topline = curwin->w_topline; | |
| 1657 #ifdef FEAT_DIFF | |
| 1658 linenr_T old_topfill = curwin->w_topfill; | |
| 1659 #endif | |
| 1660 linenr_T new_topline; | |
| 1661 int off = p_so; | |
| 1662 | |
| 1663 #ifdef FEAT_MOUSE | |
| 1664 if (mouse_dragging > 0) | |
| 1665 off = mouse_dragging - 1; | |
| 1666 #endif | |
| 1667 | |
| 1668 /* | |
| 1669 * Decrease topline until: | |
| 1670 * - it has become 1 | |
| 1671 * - (part of) the cursor line is moved off the screen or | |
| 1672 * - moved at least 'scrolljump' lines and | |
| 1673 * - at least 'scrolloff' lines above and below the cursor | |
| 1674 */ | |
| 1675 validate_cheight(); | |
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diff
changeset
|
1676 used = curwin->w_cline_height; /* includes filler lines above */ |
| 7 | 1677 if (curwin->w_cursor.lnum < curwin->w_topline) |
| 1678 scrolled = used; | |
| 1679 | |
| 1680 #ifdef FEAT_FOLDING | |
| 1681 if (hasFolding(curwin->w_cursor.lnum, &top, &bot)) | |
| 1682 { | |
| 1683 --top; | |
| 1684 ++bot; | |
| 1685 } | |
| 1686 else | |
| 1687 #endif | |
| 1688 { | |
| 1689 top = curwin->w_cursor.lnum - 1; | |
| 1690 bot = curwin->w_cursor.lnum + 1; | |
| 1691 } | |
| 1692 new_topline = top + 1; | |
| 1693 | |
| 1694 #ifdef FEAT_DIFF | |
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1695 /* "used" already contains the number of filler lines above, don't add it |
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1696 * again. |
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1697 * Hide filler lines above cursor line by adding them to "extra". */ |
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changeset
|
1698 extra += diff_check_fill(curwin, curwin->w_cursor.lnum); |
| 7 | 1699 #endif |
| 1700 | |
| 1701 /* | |
| 1702 * Check if the lines from "top" to "bot" fit in the window. If they do, | |
| 1703 * set new_topline and advance "top" and "bot" to include more lines. | |
| 1704 */ | |
| 1705 while (top > 0) | |
| 1706 { | |
| 1707 #ifdef FEAT_FOLDING | |
| 1708 if (hasFolding(top, &top, NULL)) | |
| 1709 /* count one logical line for a sequence of folded lines */ | |
| 1710 i = 1; | |
| 1711 else | |
| 1712 #endif | |
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changeset
|
1713 i = PLINES_NOFILL(top); |
| 7 | 1714 used += i; |
| 1715 if (extra + i <= off && bot < curbuf->b_ml.ml_line_count) | |
| 1716 { | |
| 1717 #ifdef FEAT_FOLDING | |
| 1718 if (hasFolding(bot, NULL, &bot)) | |
| 1719 /* count one logical line for a sequence of folded lines */ | |
| 1720 ++used; | |
| 1721 else | |
| 1722 #endif | |
| 1723 used += plines(bot); | |
| 1724 } | |
| 1725 if (used > curwin->w_height) | |
| 1726 break; | |
| 1727 if (top < curwin->w_topline) | |
| 1728 scrolled += i; | |
| 1729 | |
| 1730 /* | |
| 1731 * If scrolling is needed, scroll at least 'sj' lines. | |
| 1732 */ | |
| 1733 if ((new_topline >= curwin->w_topline || scrolled > min_scroll) | |
| 1734 && extra >= off) | |
| 1735 break; | |
| 1736 | |
| 1737 extra += i; | |
| 1738 new_topline = top; | |
| 1739 --top; | |
| 1740 ++bot; | |
| 1741 } | |
| 1742 | |
| 1743 /* | |
| 1744 * If we don't have enough space, put cursor in the middle. | |
| 1745 * This makes sure we get the same position when using "k" and "j" | |
| 1746 * in a small window. | |
| 1747 */ | |
| 1748 if (used > curwin->w_height) | |
| 1749 scroll_cursor_halfway(FALSE); | |
| 1750 else | |
| 1751 { | |
| 1752 /* | |
| 1753 * If "always" is FALSE, only adjust topline to a lower value, higher | |
| 1754 * value may happen with wrapping lines | |
| 1755 */ | |
| 1756 if (new_topline < curwin->w_topline || always) | |
| 1757 curwin->w_topline = new_topline; | |
| 1758 if (curwin->w_topline > curwin->w_cursor.lnum) | |
| 1759 curwin->w_topline = curwin->w_cursor.lnum; | |
| 1760 #ifdef FEAT_DIFF | |
| 1761 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 1762 if (curwin->w_topfill > 0 && extra > off) | |
| 1763 { | |
| 1764 curwin->w_topfill -= extra - off; | |
| 1765 if (curwin->w_topfill < 0) | |
| 1766 curwin->w_topfill = 0; | |
| 1767 } | |
| 1768 check_topfill(curwin, FALSE); | |
| 1769 #endif | |
| 1770 if (curwin->w_topline != old_topline | |
| 1771 #ifdef FEAT_DIFF | |
| 1772 || curwin->w_topfill != old_topfill | |
| 1773 #endif | |
| 1774 ) | |
| 1775 curwin->w_valid &= | |
| 1776 ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 1777 curwin->w_valid |= VALID_TOPLINE; | |
| 1778 } | |
| 1779 } | |
| 1780 | |
| 1781 /* | |
| 1782 * Set w_empty_rows and w_filler_rows for window "wp", having used up "used" | |
| 1783 * screen lines for text lines. | |
| 1784 */ | |
| 1785 void | |
|
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1786 set_empty_rows(win_T *wp, int used) |
| 7 | 1787 { |
| 1788 #ifdef FEAT_DIFF | |
| 1789 wp->w_filler_rows = 0; | |
| 1790 #endif | |
| 1791 if (used == 0) | |
| 1792 wp->w_empty_rows = 0; /* single line that doesn't fit */ | |
| 1793 else | |
| 1794 { | |
| 1795 wp->w_empty_rows = wp->w_height - used; | |
| 1796 #ifdef FEAT_DIFF | |
| 1797 if (wp->w_botline <= wp->w_buffer->b_ml.ml_line_count) | |
| 1798 { | |
| 1799 wp->w_filler_rows = diff_check_fill(wp, wp->w_botline); | |
| 1800 if (wp->w_empty_rows > wp->w_filler_rows) | |
| 1801 wp->w_empty_rows -= wp->w_filler_rows; | |
| 1802 else | |
| 1803 { | |
| 1804 wp->w_filler_rows = wp->w_empty_rows; | |
| 1805 wp->w_empty_rows = 0; | |
| 1806 } | |
| 1807 } | |
| 1808 #endif | |
| 1809 } | |
| 1810 } | |
| 1811 | |
| 1812 /* | |
| 1813 * Recompute topline to put the cursor at the bottom of the window. | |
| 1814 * Scroll at least "min_scroll" lines. | |
| 1815 * If "set_topbot" is TRUE, set topline and botline first (for "zb"). | |
| 1816 * This is messy stuff!!! | |
| 1817 */ | |
| 1818 void | |
|
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1819 scroll_cursor_bot(int min_scroll, int set_topbot) |
| 7 | 1820 { |
| 1821 int used; | |
| 1822 int scrolled = 0; | |
| 1823 int extra = 0; | |
| 1824 int i; | |
| 1825 linenr_T line_count; | |
| 1826 linenr_T old_topline = curwin->w_topline; | |
| 1827 lineoff_T loff; | |
| 1828 lineoff_T boff; | |
| 1829 #ifdef FEAT_DIFF | |
| 1830 int old_topfill = curwin->w_topfill; | |
| 1831 int fill_below_window; | |
| 1832 #endif | |
| 1833 linenr_T old_botline = curwin->w_botline; | |
| 1834 linenr_T old_valid = curwin->w_valid; | |
| 1835 int old_empty_rows = curwin->w_empty_rows; | |
| 1836 linenr_T cln; /* Cursor Line Number */ | |
| 1837 | |
| 1838 cln = curwin->w_cursor.lnum; | |
| 1839 if (set_topbot) | |
| 1840 { | |
| 1841 used = 0; | |
| 1842 curwin->w_botline = cln + 1; | |
| 1843 #ifdef FEAT_DIFF | |
| 1844 loff.fill = 0; | |
| 1845 #endif | |
| 1846 for (curwin->w_topline = curwin->w_botline; | |
| 1847 curwin->w_topline > 1; | |
| 1848 curwin->w_topline = loff.lnum) | |
| 1849 { | |
| 1850 loff.lnum = curwin->w_topline; | |
| 1851 topline_back(&loff); | |
|
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1852 if (loff.height == MAXCOL || used + loff.height > curwin->w_height) |
| 7 | 1853 break; |
| 1854 used += loff.height; | |
| 1855 #ifdef FEAT_DIFF | |
| 1856 curwin->w_topfill = loff.fill; | |
| 1857 #endif | |
| 1858 } | |
| 1859 set_empty_rows(curwin, used); | |
| 1860 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 1861 if (curwin->w_topline != old_topline | |
| 1862 #ifdef FEAT_DIFF | |
| 1863 || curwin->w_topfill != old_topfill | |
| 1864 #endif | |
| 1865 ) | |
| 1866 curwin->w_valid &= ~(VALID_WROW|VALID_CROW); | |
| 1867 } | |
| 1868 else | |
| 1869 validate_botline(); | |
| 1870 | |
| 1871 /* The lines of the cursor line itself are always used. */ | |
| 1872 #ifdef FEAT_DIFF | |
| 1873 used = plines_nofill(cln); | |
| 1874 #else | |
| 1875 validate_cheight(); | |
| 1876 used = curwin->w_cline_height; | |
| 1877 #endif | |
| 1878 | |
| 1879 /* If the cursor is below botline, we will at least scroll by the height | |
| 1880 * of the cursor line. Correct for empty lines, which are really part of | |
| 1881 * botline. */ | |
| 1882 if (cln >= curwin->w_botline) | |
| 1883 { | |
| 1884 scrolled = used; | |
| 1885 if (cln == curwin->w_botline) | |
| 1886 scrolled -= curwin->w_empty_rows; | |
| 1887 } | |
| 1888 | |
| 1889 /* | |
| 1890 * Stop counting lines to scroll when | |
| 1891 * - hitting start of the file | |
| 1892 * - scrolled nothing or at least 'sj' lines | |
| 1893 * - at least 'so' lines below the cursor | |
| 1894 * - lines between botline and cursor have been counted | |
| 1895 */ | |
| 1896 #ifdef FEAT_FOLDING | |
| 1897 if (!hasFolding(curwin->w_cursor.lnum, &loff.lnum, &boff.lnum)) | |
| 1898 #endif | |
| 1899 { | |
| 1900 loff.lnum = cln; | |
| 1901 boff.lnum = cln; | |
| 1902 } | |
| 1903 #ifdef FEAT_DIFF | |
| 1904 loff.fill = 0; | |
| 1905 boff.fill = 0; | |
| 1906 fill_below_window = diff_check_fill(curwin, curwin->w_botline) | |
| 1907 - curwin->w_filler_rows; | |
| 1908 #endif | |
| 1909 | |
| 1910 while (loff.lnum > 1) | |
| 1911 { | |
| 1912 /* Stop when scrolled nothing or at least "min_scroll", found "extra" | |
| 1913 * context for 'scrolloff' and counted all lines below the window. */ | |
| 1914 if ((((scrolled <= 0 || scrolled >= min_scroll) | |
| 1915 && extra >= ( | |
| 1916 #ifdef FEAT_MOUSE | |
| 1121 | 1917 mouse_dragging > 0 ? mouse_dragging - 1 : |
| 7 | 1918 #endif |
| 1919 p_so)) | |
| 1920 || boff.lnum + 1 > curbuf->b_ml.ml_line_count) | |
| 1921 && loff.lnum <= curwin->w_botline | |
| 1922 #ifdef FEAT_DIFF | |
| 1923 && (loff.lnum < curwin->w_botline | |
| 1924 || loff.fill >= fill_below_window) | |
| 1925 #endif | |
| 1926 ) | |
| 1927 break; | |
| 1928 | |
| 1929 /* Add one line above */ | |
| 1930 topline_back(&loff); | |
|
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1931 if (loff.height == MAXCOL) |
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1932 used = MAXCOL; |
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1933 else |
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1934 used += loff.height; |
| 7 | 1935 if (used > curwin->w_height) |
| 1936 break; | |
| 1937 if (loff.lnum >= curwin->w_botline | |
| 1938 #ifdef FEAT_DIFF | |
| 1939 && (loff.lnum > curwin->w_botline | |
| 1940 || loff.fill <= fill_below_window) | |
| 1941 #endif | |
| 1942 ) | |
| 1943 { | |
| 1944 /* Count screen lines that are below the window. */ | |
| 1945 scrolled += loff.height; | |
| 1946 if (loff.lnum == curwin->w_botline | |
| 1947 #ifdef FEAT_DIFF | |
| 1948 && boff.fill == 0 | |
| 1949 #endif | |
| 1950 ) | |
| 1951 scrolled -= curwin->w_empty_rows; | |
| 1952 } | |
| 1953 | |
| 1954 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
| 1955 { | |
| 1956 /* Add one line below */ | |
| 1957 botline_forw(&boff); | |
| 1958 used += boff.height; | |
| 1959 if (used > curwin->w_height) | |
| 1960 break; | |
| 1961 if (extra < ( | |
| 1962 #ifdef FEAT_MOUSE | |
| 1963 mouse_dragging > 0 ? mouse_dragging - 1 : | |
| 1964 #endif | |
| 1965 p_so) || scrolled < min_scroll) | |
| 1966 { | |
| 1967 extra += boff.height; | |
| 1968 if (boff.lnum >= curwin->w_botline | |
| 1969 #ifdef FEAT_DIFF | |
| 1970 || (boff.lnum + 1 == curwin->w_botline | |
| 1971 && boff.fill > curwin->w_filler_rows) | |
| 1972 #endif | |
| 1973 ) | |
| 1974 { | |
| 1975 /* Count screen lines that are below the window. */ | |
| 1976 scrolled += boff.height; | |
| 1977 if (boff.lnum == curwin->w_botline | |
| 1978 #ifdef FEAT_DIFF | |
| 1979 && boff.fill == 0 | |
| 1980 #endif | |
| 1981 ) | |
| 1982 scrolled -= curwin->w_empty_rows; | |
| 1983 } | |
| 1984 } | |
| 1985 } | |
| 1986 } | |
| 1987 | |
| 1988 /* curwin->w_empty_rows is larger, no need to scroll */ | |
| 1989 if (scrolled <= 0) | |
| 1990 line_count = 0; | |
| 1991 /* more than a screenfull, don't scroll but redraw */ | |
| 1992 else if (used > curwin->w_height) | |
| 1993 line_count = used; | |
| 1994 /* scroll minimal number of lines */ | |
| 1995 else | |
| 1996 { | |
| 1997 line_count = 0; | |
| 1998 #ifdef FEAT_DIFF | |
| 1999 boff.fill = curwin->w_topfill; | |
| 2000 #endif | |
| 2001 boff.lnum = curwin->w_topline - 1; | |
| 2002 for (i = 0; i < scrolled && boff.lnum < curwin->w_botline; ) | |
| 2003 { | |
| 2004 botline_forw(&boff); | |
| 2005 i += boff.height; | |
| 2006 ++line_count; | |
| 2007 } | |
| 2008 if (i < scrolled) /* below curwin->w_botline, don't scroll */ | |
| 2009 line_count = 9999; | |
| 2010 } | |
| 2011 | |
| 2012 /* | |
| 2013 * Scroll up if the cursor is off the bottom of the screen a bit. | |
| 2014 * Otherwise put it at 1/2 of the screen. | |
| 2015 */ | |
| 2016 if (line_count >= curwin->w_height && line_count > min_scroll) | |
| 2017 scroll_cursor_halfway(FALSE); | |
| 2018 else | |
| 2019 scrollup(line_count, TRUE); | |
| 2020 | |
| 2021 /* | |
| 2022 * If topline didn't change we need to restore w_botline and w_empty_rows | |
| 2023 * (we changed them). | |
| 2024 * If topline did change, update_screen() will set botline. | |
| 2025 */ | |
| 2026 if (curwin->w_topline == old_topline && set_topbot) | |
| 2027 { | |
| 2028 curwin->w_botline = old_botline; | |
| 2029 curwin->w_empty_rows = old_empty_rows; | |
| 2030 curwin->w_valid = old_valid; | |
| 2031 } | |
| 2032 curwin->w_valid |= VALID_TOPLINE; | |
| 2033 } | |
| 2034 | |
| 2035 /* | |
| 2036 * Recompute topline to put the cursor halfway the window | |
| 2037 * If "atend" is TRUE, also put it halfway at the end of the file. | |
| 2038 */ | |
| 2039 void | |
|
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diff
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|
2040 scroll_cursor_halfway(int atend) |
| 7 | 2041 { |
| 2042 int above = 0; | |
| 2043 linenr_T topline; | |
| 2044 #ifdef FEAT_DIFF | |
| 2045 int topfill = 0; | |
| 2046 #endif | |
| 2047 int below = 0; | |
| 2048 int used; | |
| 2049 lineoff_T loff; | |
| 2050 lineoff_T boff; | |
| 5661 | 2051 #ifdef FEAT_DIFF |
| 5653 | 2052 linenr_T old_topline = curwin->w_topline; |
| 5661 | 2053 #endif |
| 7 | 2054 |
| 2055 loff.lnum = boff.lnum = curwin->w_cursor.lnum; | |
| 2056 #ifdef FEAT_FOLDING | |
| 2057 (void)hasFolding(loff.lnum, &loff.lnum, &boff.lnum); | |
| 2058 #endif | |
| 2059 #ifdef FEAT_DIFF | |
| 2060 used = plines_nofill(loff.lnum); | |
| 2061 loff.fill = 0; | |
| 2062 boff.fill = 0; | |
| 2063 #else | |
| 2064 used = plines(loff.lnum); | |
| 2065 #endif | |
| 2066 topline = loff.lnum; | |
| 2067 while (topline > 1) | |
| 2068 { | |
| 2069 if (below <= above) /* add a line below the cursor first */ | |
| 2070 { | |
| 2071 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
| 2072 { | |
| 2073 botline_forw(&boff); | |
| 2074 used += boff.height; | |
| 2075 if (used > curwin->w_height) | |
| 2076 break; | |
| 2077 below += boff.height; | |
| 2078 } | |
| 2079 else | |
| 2080 { | |
| 2081 ++below; /* count a "~" line */ | |
| 2082 if (atend) | |
| 2083 ++used; | |
| 2084 } | |
| 2085 } | |
| 2086 | |
| 2087 if (below > above) /* add a line above the cursor */ | |
| 2088 { | |
| 2089 topline_back(&loff); | |
|
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2090 if (loff.height == MAXCOL) |
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2091 used = MAXCOL; |
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2092 else |
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2093 used += loff.height; |
| 7 | 2094 if (used > curwin->w_height) |
| 2095 break; | |
| 2096 above += loff.height; | |
| 2097 topline = loff.lnum; | |
| 2098 #ifdef FEAT_DIFF | |
| 2099 topfill = loff.fill; | |
| 2100 #endif | |
| 2101 } | |
| 2102 } | |
| 2103 #ifdef FEAT_FOLDING | |
| 2104 if (!hasFolding(topline, &curwin->w_topline, NULL)) | |
| 2105 #endif | |
| 2106 curwin->w_topline = topline; | |
| 2107 #ifdef FEAT_DIFF | |
| 2108 curwin->w_topfill = topfill; | |
| 5653 | 2109 if (old_topline > curwin->w_topline + curwin->w_height) |
| 2110 curwin->w_botfill = FALSE; | |
| 7 | 2111 check_topfill(curwin, FALSE); |
| 2112 #endif | |
| 2113 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2114 curwin->w_valid |= VALID_TOPLINE; | |
| 2115 } | |
| 2116 | |
| 2117 /* | |
| 2118 * Correct the cursor position so that it is in a part of the screen at least | |
| 2119 * 'so' lines from the top and bottom, if possible. | |
| 2120 * If not possible, put it at the same position as scroll_cursor_halfway(). | |
| 2121 * When called topline must be valid! | |
| 2122 */ | |
| 2123 void | |
|
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2124 cursor_correct(void) |
| 7 | 2125 { |
| 2126 int above = 0; /* screen lines above topline */ | |
| 2127 linenr_T topline; | |
| 2128 int below = 0; /* screen lines below botline */ | |
| 2129 linenr_T botline; | |
| 2130 int above_wanted, below_wanted; | |
| 2131 linenr_T cln; /* Cursor Line Number */ | |
| 2132 int max_off; | |
| 2133 | |
| 2134 /* | |
| 2135 * How many lines we would like to have above/below the cursor depends on | |
| 2136 * whether the first/last line of the file is on screen. | |
| 2137 */ | |
| 2138 above_wanted = p_so; | |
| 2139 below_wanted = p_so; | |
| 2140 #ifdef FEAT_MOUSE | |
| 1121 | 2141 if (mouse_dragging > 0) |
| 7 | 2142 { |
| 2143 above_wanted = mouse_dragging - 1; | |
| 2144 below_wanted = mouse_dragging - 1; | |
| 2145 } | |
| 2146 #endif | |
| 2147 if (curwin->w_topline == 1) | |
| 2148 { | |
| 2149 above_wanted = 0; | |
| 2150 max_off = curwin->w_height / 2; | |
| 2151 if (below_wanted > max_off) | |
| 2152 below_wanted = max_off; | |
| 2153 } | |
| 2154 validate_botline(); | |
| 2155 if (curwin->w_botline == curbuf->b_ml.ml_line_count + 1 | |
| 2156 #ifdef FEAT_MOUSE | |
| 1121 | 2157 && mouse_dragging == 0 |
| 7 | 2158 #endif |
| 2159 ) | |
| 2160 { | |
| 2161 below_wanted = 0; | |
| 2162 max_off = (curwin->w_height - 1) / 2; | |
| 2163 if (above_wanted > max_off) | |
| 2164 above_wanted = max_off; | |
| 2165 } | |
| 2166 | |
| 2167 /* | |
| 2168 * If there are sufficient file-lines above and below the cursor, we can | |
| 2169 * return now. | |
| 2170 */ | |
| 2171 cln = curwin->w_cursor.lnum; | |
| 2172 if (cln >= curwin->w_topline + above_wanted | |
| 2173 && cln < curwin->w_botline - below_wanted | |
| 2174 #ifdef FEAT_FOLDING | |
| 2175 && !hasAnyFolding(curwin) | |
| 2176 #endif | |
| 2177 ) | |
| 2178 return; | |
| 2179 | |
| 2180 /* | |
| 2181 * Narrow down the area where the cursor can be put by taking lines from | |
| 2182 * the top and the bottom until: | |
| 2183 * - the desired context lines are found | |
| 2184 * - the lines from the top is past the lines from the bottom | |
| 2185 */ | |
| 2186 topline = curwin->w_topline; | |
| 2187 botline = curwin->w_botline - 1; | |
| 2188 #ifdef FEAT_DIFF | |
| 2189 /* count filler lines as context */ | |
| 2190 above = curwin->w_topfill; | |
| 2191 below = curwin->w_filler_rows; | |
| 2192 #endif | |
| 2193 while ((above < above_wanted || below < below_wanted) && topline < botline) | |
| 2194 { | |
| 2195 if (below < below_wanted && (below <= above || above >= above_wanted)) | |
| 2196 { | |
| 2197 #ifdef FEAT_FOLDING | |
| 2198 if (hasFolding(botline, &botline, NULL)) | |
| 2199 ++below; | |
| 2200 else | |
| 2201 #endif | |
| 2202 below += plines(botline); | |
| 2203 --botline; | |
| 2204 } | |
| 2205 if (above < above_wanted && (above < below || below >= below_wanted)) | |
| 2206 { | |
| 2207 #ifdef FEAT_FOLDING | |
| 2208 if (hasFolding(topline, NULL, &topline)) | |
| 2209 ++above; | |
| 2210 else | |
| 2211 #endif | |
|
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2212 above += PLINES_NOFILL(topline); |
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2213 #ifdef FEAT_DIFF |
| 7 | 2214 /* Count filler lines below this line as context. */ |
| 2215 if (topline < botline) | |
| 2216 above += diff_check_fill(curwin, topline + 1); | |
| 2217 #endif | |
| 2218 ++topline; | |
| 2219 } | |
| 2220 } | |
| 2221 if (topline == botline || botline == 0) | |
| 2222 curwin->w_cursor.lnum = topline; | |
| 2223 else if (topline > botline) | |
| 2224 curwin->w_cursor.lnum = botline; | |
| 2225 else | |
| 2226 { | |
| 2227 if (cln < topline && curwin->w_topline > 1) | |
| 2228 { | |
| 2229 curwin->w_cursor.lnum = topline; | |
| 2230 curwin->w_valid &= | |
| 2231 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
| 2232 } | |
| 2233 if (cln > botline && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 2234 { | |
| 2235 curwin->w_cursor.lnum = botline; | |
| 2236 curwin->w_valid &= | |
| 2237 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
| 2238 } | |
| 2239 } | |
| 2240 curwin->w_valid |= VALID_TOPLINE; | |
| 2241 } | |
| 2242 | |
|
7803
37c929c4a073
commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
Christian Brabandt <cb@256bit.org>
parents:
7103
diff
changeset
|
2243 static void get_scroll_overlap(lineoff_T *lp, int dir); |
| 7 | 2244 |
| 2245 /* | |
| 2246 * move screen 'count' pages up or down and update screen | |
| 2247 * | |
| 2248 * return FAIL for failure, OK otherwise | |
| 2249 */ | |
| 2250 int | |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2251 onepage(int dir, long count) |
| 7 | 2252 { |
| 2253 long n; | |
| 2254 int retval = OK; | |
| 2255 lineoff_T loff; | |
| 2256 linenr_T old_topline = curwin->w_topline; | |
| 2257 | |
| 2258 if (curbuf->b_ml.ml_line_count == 1) /* nothing to do */ | |
| 2259 { | |
| 2260 beep_flush(); | |
| 2261 return FAIL; | |
| 2262 } | |
| 2263 | |
| 2264 for ( ; count > 0; --count) | |
| 2265 { | |
| 2266 validate_botline(); | |
| 2267 /* | |
| 2268 * It's an error to move a page up when the first line is already on | |
| 2269 * the screen. It's an error to move a page down when the last line | |
| 2270 * is on the screen and the topline is 'scrolloff' lines from the | |
| 2271 * last line. | |
| 2272 */ | |
| 2273 if (dir == FORWARD | |
| 2274 ? ((curwin->w_topline >= curbuf->b_ml.ml_line_count - p_so) | |
| 2275 && curwin->w_botline > curbuf->b_ml.ml_line_count) | |
| 2276 : (curwin->w_topline == 1 | |
| 2277 #ifdef FEAT_DIFF | |
| 2278 && curwin->w_topfill == | |
| 2279 diff_check_fill(curwin, curwin->w_topline) | |
| 2280 #endif | |
| 2281 )) | |
| 2282 { | |
| 2283 beep_flush(); | |
| 2284 retval = FAIL; | |
| 2285 break; | |
| 2286 } | |
| 2287 | |
| 2288 #ifdef FEAT_DIFF | |
| 2289 loff.fill = 0; | |
| 2290 #endif | |
| 2291 if (dir == FORWARD) | |
| 2292 { | |
|
10349
cf988222b150
commit https://github.com/vim/vim/commit/a1f4cb93ba50ea9e40cd4b1f5592b8a6d1398660
Christian Brabandt <cb@256bit.org>
parents:
10295
diff
changeset
|
2293 if (ONE_WINDOW && p_window > 0 && p_window < Rows - 1) |
| 7 | 2294 { |
| 164 | 2295 /* Vi compatible scrolling */ |
| 2296 if (p_window <= 2) | |
| 2297 ++curwin->w_topline; | |
| 2298 else | |
| 2299 curwin->w_topline += p_window - 2; | |
| 2300 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
| 2301 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
| 2302 curwin->w_cursor.lnum = curwin->w_topline; | |
| 2303 } | |
| 2304 else if (curwin->w_botline > curbuf->b_ml.ml_line_count) | |
| 2305 { | |
| 2306 /* at end of file */ | |
| 7 | 2307 curwin->w_topline = curbuf->b_ml.ml_line_count; |
| 2308 #ifdef FEAT_DIFF | |
| 2309 curwin->w_topfill = 0; | |
| 2310 #endif | |
| 2311 curwin->w_valid &= ~(VALID_WROW|VALID_CROW); | |
| 2312 } | |
| 2313 else | |
| 2314 { | |
| 2315 /* For the overlap, start with the line just below the window | |
| 2316 * and go upwards. */ | |
| 2317 loff.lnum = curwin->w_botline; | |
| 2318 #ifdef FEAT_DIFF | |
| 2319 loff.fill = diff_check_fill(curwin, loff.lnum) | |
| 2320 - curwin->w_filler_rows; | |
| 2321 #endif | |
| 2322 get_scroll_overlap(&loff, -1); | |
| 2323 curwin->w_topline = loff.lnum; | |
| 2324 #ifdef FEAT_DIFF | |
| 2325 curwin->w_topfill = loff.fill; | |
| 2326 check_topfill(curwin, FALSE); | |
| 2327 #endif | |
| 2328 curwin->w_cursor.lnum = curwin->w_topline; | |
| 2329 curwin->w_valid &= ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW| | |
| 2330 VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2331 } | |
| 2332 } | |
| 2333 else /* dir == BACKWARDS */ | |
| 2334 { | |
| 2335 #ifdef FEAT_DIFF | |
| 2336 if (curwin->w_topline == 1) | |
| 2337 { | |
| 2338 /* Include max number of filler lines */ | |
| 2339 max_topfill(); | |
| 2340 continue; | |
| 2341 } | |
| 2342 #endif | |
|
10349
cf988222b150
commit https://github.com/vim/vim/commit/a1f4cb93ba50ea9e40cd4b1f5592b8a6d1398660
Christian Brabandt <cb@256bit.org>
parents:
10295
diff
changeset
|
2343 if (ONE_WINDOW && p_window > 0 && p_window < Rows - 1) |
| 164 | 2344 { |
| 2345 /* Vi compatible scrolling (sort of) */ | |
| 2346 if (p_window <= 2) | |
| 2347 --curwin->w_topline; | |
| 2348 else | |
| 2349 curwin->w_topline -= p_window - 2; | |
| 2350 if (curwin->w_topline < 1) | |
| 2351 curwin->w_topline = 1; | |
| 2352 curwin->w_cursor.lnum = curwin->w_topline + p_window - 1; | |
| 2353 if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count) | |
| 2354 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; | |
| 2355 continue; | |
| 2356 } | |
| 2357 | |
| 7 | 2358 /* Find the line at the top of the window that is going to be the |
| 2359 * line at the bottom of the window. Make sure this results in | |
| 2360 * the same line as before doing CTRL-F. */ | |
| 2361 loff.lnum = curwin->w_topline - 1; | |
| 2362 #ifdef FEAT_DIFF | |
| 2363 loff.fill = diff_check_fill(curwin, loff.lnum + 1) | |
| 2364 - curwin->w_topfill; | |
| 2365 #endif | |
| 2366 get_scroll_overlap(&loff, 1); | |
| 2367 | |
| 2368 if (loff.lnum >= curbuf->b_ml.ml_line_count) | |
| 2369 { | |
| 2370 loff.lnum = curbuf->b_ml.ml_line_count; | |
| 2371 #ifdef FEAT_DIFF | |
| 2372 loff.fill = 0; | |
| 2373 } | |
| 2374 else | |
| 2375 { | |
| 2376 botline_topline(&loff); | |
| 2377 #endif | |
| 2378 } | |
| 2379 curwin->w_cursor.lnum = loff.lnum; | |
| 2380 | |
| 2381 /* Find the line just above the new topline to get the right line | |
| 2382 * at the bottom of the window. */ | |
| 2383 n = 0; | |
| 2384 while (n <= curwin->w_height && loff.lnum >= 1) | |
| 2385 { | |
| 2386 topline_back(&loff); | |
|
2082
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2387 if (loff.height == MAXCOL) |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2388 n = MAXCOL; |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2389 else |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2390 n += loff.height; |
| 7 | 2391 } |
|
2082
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2392 if (loff.lnum < 1) /* at begin of file */ |
| 7 | 2393 { |
| 2394 curwin->w_topline = 1; | |
| 2395 #ifdef FEAT_DIFF | |
| 2396 max_topfill(); | |
| 2397 #endif | |
| 2398 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 2399 } | |
| 2400 else | |
| 2401 { | |
| 2402 /* Go two lines forward again. */ | |
| 2403 #ifdef FEAT_DIFF | |
| 2404 topline_botline(&loff); | |
| 2405 #endif | |
| 2406 botline_forw(&loff); | |
| 2407 botline_forw(&loff); | |
| 2408 #ifdef FEAT_DIFF | |
| 2409 botline_topline(&loff); | |
| 2410 #endif | |
| 2411 #ifdef FEAT_FOLDING | |
| 2412 /* We're at the wrong end of a fold now. */ | |
| 2413 (void)hasFolding(loff.lnum, &loff.lnum, NULL); | |
| 2414 #endif | |
| 2415 | |
| 2416 /* Always scroll at least one line. Avoid getting stuck on | |
| 2417 * very long lines. */ | |
| 2418 if (loff.lnum >= curwin->w_topline | |
| 2419 #ifdef FEAT_DIFF | |
| 2420 && (loff.lnum > curwin->w_topline | |
| 2421 || loff.fill >= curwin->w_topfill) | |
| 2422 #endif | |
| 2423 ) | |
| 2424 { | |
| 2425 #ifdef FEAT_DIFF | |
| 2426 /* First try using the maximum number of filler lines. If | |
| 2427 * that's not enough, backup one line. */ | |
| 2428 loff.fill = curwin->w_topfill; | |
| 2429 if (curwin->w_topfill < diff_check_fill(curwin, | |
| 2430 curwin->w_topline)) | |
| 2431 max_topfill(); | |
| 2432 if (curwin->w_topfill == loff.fill) | |
| 2433 #endif | |
| 2434 { | |
| 2435 --curwin->w_topline; | |
| 2436 #ifdef FEAT_DIFF | |
| 2437 curwin->w_topfill = 0; | |
| 2438 #endif | |
| 2439 } | |
| 2440 comp_botline(curwin); | |
| 2441 curwin->w_cursor.lnum = curwin->w_botline - 1; | |
| 5764 | 2442 curwin->w_valid &= |
| 2443 ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW|VALID_CROW); | |
| 7 | 2444 } |
| 2445 else | |
| 2446 { | |
| 2447 curwin->w_topline = loff.lnum; | |
| 2448 #ifdef FEAT_DIFF | |
| 2449 curwin->w_topfill = loff.fill; | |
| 2450 check_topfill(curwin, FALSE); | |
| 2451 #endif | |
| 2452 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 2453 } | |
| 2454 } | |
| 2455 } | |
| 2456 } | |
| 2457 #ifdef FEAT_FOLDING | |
| 2458 foldAdjustCursor(); | |
| 2459 #endif | |
| 2460 cursor_correct(); | |
|
10102
b80ad55d62d8
commit https://github.com/vim/vim/commit/bc54f3f3fed4dc3556df8c46cee6739d211b0eb2
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
2461 check_cursor_col(); |
| 161 | 2462 if (retval == OK) |
| 2463 beginline(BL_SOL | BL_FIX); | |
| 7 | 2464 curwin->w_valid &= ~(VALID_WCOL|VALID_WROW|VALID_VIRTCOL); |
| 2465 | |
| 2466 /* | |
| 2467 * Avoid the screen jumping up and down when 'scrolloff' is non-zero. | |
| 2468 * But make sure we scroll at least one line (happens with mix of long | |
| 2469 * wrapping lines and non-wrapping line). | |
| 2470 */ | |
| 2471 if (retval == OK && dir == FORWARD && check_top_offset()) | |
| 2472 { | |
| 2473 scroll_cursor_top(1, FALSE); | |
| 2474 if (curwin->w_topline <= old_topline | |
| 2475 && old_topline < curbuf->b_ml.ml_line_count) | |
| 2476 { | |
| 2477 curwin->w_topline = old_topline + 1; | |
| 2478 #ifdef FEAT_FOLDING | |
| 2479 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 2480 #endif | |
| 2481 } | |
| 2482 } | |
| 2483 | |
| 2484 redraw_later(VALID); | |
| 2485 return retval; | |
| 2486 } | |
| 2487 | |
| 2488 /* | |
| 2489 * Decide how much overlap to use for page-up or page-down scrolling. | |
| 2490 * This is symmetric, so that doing both keeps the same lines displayed. | |
| 2491 * Three lines are examined: | |
| 2492 * | |
| 2493 * before CTRL-F after CTRL-F / before CTRL-B | |
| 2494 * etc. l1 | |
| 2495 * l1 last but one line ------------ | |
| 2496 * l2 last text line l2 top text line | |
| 2497 * ------------- l3 second text line | |
| 2498 * l3 etc. | |
| 2499 */ | |
| 2500 static void | |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2501 get_scroll_overlap(lineoff_T *lp, int dir) |
| 7 | 2502 { |
| 2503 int h1, h2, h3, h4; | |
| 2504 int min_height = curwin->w_height - 2; | |
| 2505 lineoff_T loff0, loff1, loff2; | |
| 2506 | |
| 2507 #ifdef FEAT_DIFF | |
| 2508 if (lp->fill > 0) | |
| 2509 lp->height = 1; | |
| 2510 else | |
| 2511 lp->height = plines_nofill(lp->lnum); | |
| 2512 #else | |
| 2513 lp->height = plines(lp->lnum); | |
| 2514 #endif | |
| 2515 h1 = lp->height; | |
| 2516 if (h1 > min_height) | |
| 2517 return; /* no overlap */ | |
| 2518 | |
| 2519 loff0 = *lp; | |
| 2520 if (dir > 0) | |
| 2521 botline_forw(lp); | |
| 2522 else | |
| 2523 topline_back(lp); | |
| 2524 h2 = lp->height; | |
| 3968 | 2525 if (h2 == MAXCOL || h2 + h1 > min_height) |
| 7 | 2526 { |
| 2527 *lp = loff0; /* no overlap */ | |
| 2528 return; | |
| 2529 } | |
| 2530 | |
| 2531 loff1 = *lp; | |
| 2532 if (dir > 0) | |
| 2533 botline_forw(lp); | |
| 2534 else | |
| 2535 topline_back(lp); | |
| 2536 h3 = lp->height; | |
| 3968 | 2537 if (h3 == MAXCOL || h3 + h2 > min_height) |
| 7 | 2538 { |
| 2539 *lp = loff0; /* no overlap */ | |
| 2540 return; | |
| 2541 } | |
| 2542 | |
| 2543 loff2 = *lp; | |
| 2544 if (dir > 0) | |
| 2545 botline_forw(lp); | |
| 2546 else | |
| 2547 topline_back(lp); | |
| 2548 h4 = lp->height; | |
| 3968 | 2549 if (h4 == MAXCOL || h4 + h3 + h2 > min_height || h3 + h2 + h1 > min_height) |
| 7 | 2550 *lp = loff1; /* 1 line overlap */ |
| 2551 else | |
| 2552 *lp = loff2; /* 2 lines overlap */ | |
| 2553 return; | |
| 2554 } | |
| 2555 | |
| 2556 /* #define KEEP_SCREEN_LINE */ | |
| 2557 /* | |
| 2558 * Scroll 'scroll' lines up or down. | |
| 2559 */ | |
| 2560 void | |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2561 halfpage(int flag, linenr_T Prenum) |
| 7 | 2562 { |
| 2563 long scrolled = 0; | |
| 2564 int i; | |
| 2565 int n; | |
| 2566 int room; | |
| 2567 | |
| 2568 if (Prenum) | |
| 2569 curwin->w_p_scr = (Prenum > curwin->w_height) ? | |
| 2570 curwin->w_height : Prenum; | |
| 2571 n = (curwin->w_p_scr <= curwin->w_height) ? | |
| 2572 curwin->w_p_scr : curwin->w_height; | |
| 2573 | |
|
11258
84f71a8a5f2c
patch 8.0.0515: ml_get errors in silent Ex mode
Christian Brabandt <cb@256bit.org>
parents:
11121
diff
changeset
|
2574 update_topline(); |
| 7 | 2575 validate_botline(); |
| 2576 room = curwin->w_empty_rows; | |
| 2577 #ifdef FEAT_DIFF | |
| 2578 room += curwin->w_filler_rows; | |
| 2579 #endif | |
| 2580 if (flag) | |
| 2581 { | |
| 2582 /* | |
| 2583 * scroll the text up | |
| 2584 */ | |
| 2585 while (n > 0 && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 2586 { | |
| 2587 #ifdef FEAT_DIFF | |
| 2588 if (curwin->w_topfill > 0) | |
| 2589 { | |
| 2590 i = 1; | |
| 2591 if (--n < 0 && scrolled > 0) | |
| 2592 break; | |
| 2593 --curwin->w_topfill; | |
| 2594 } | |
| 2595 else | |
| 2596 #endif | |
| 2597 { | |
|
7103
84d318257a45
commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2598 i = PLINES_NOFILL(curwin->w_topline); |
| 7 | 2599 n -= i; |
| 2600 if (n < 0 && scrolled > 0) | |
| 2601 break; | |
| 2602 #ifdef FEAT_FOLDING | |
| 2603 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
| 2604 #endif | |
| 2605 ++curwin->w_topline; | |
| 2606 #ifdef FEAT_DIFF | |
| 2607 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 2608 #endif | |
| 2609 | |
| 2610 #ifndef KEEP_SCREEN_LINE | |
| 2611 if (curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
| 2612 { | |
| 2613 ++curwin->w_cursor.lnum; | |
| 2614 curwin->w_valid &= | |
| 2615 ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
| 2616 } | |
| 2617 #endif | |
| 2618 } | |
| 2619 curwin->w_valid &= ~(VALID_CROW|VALID_WROW); | |
| 2620 scrolled += i; | |
| 2621 | |
| 2622 /* | |
| 2623 * Correct w_botline for changed w_topline. | |
| 2624 * Won't work when there are filler lines. | |
| 2625 */ | |
| 2626 #ifdef FEAT_DIFF | |
| 2627 if (curwin->w_p_diff) | |
| 2628 curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2629 else | |
| 2630 #endif | |
| 2631 { | |
| 2632 room += i; | |
| 2633 do | |
| 2634 { | |
| 2635 i = plines(curwin->w_botline); | |
| 2636 if (i > room) | |
| 2637 break; | |
| 2638 #ifdef FEAT_FOLDING | |
| 2639 (void)hasFolding(curwin->w_botline, NULL, | |
| 2640 &curwin->w_botline); | |
| 2641 #endif | |
| 2642 ++curwin->w_botline; | |
| 2643 room -= i; | |
| 2644 } while (curwin->w_botline <= curbuf->b_ml.ml_line_count); | |
| 2645 } | |
| 2646 } | |
| 2647 | |
| 2648 #ifndef KEEP_SCREEN_LINE | |
| 2649 /* | |
| 2650 * When hit bottom of the file: move cursor down. | |
| 2651 */ | |
| 2652 if (n > 0) | |
| 2653 { | |
| 2654 # ifdef FEAT_FOLDING | |
| 2655 if (hasAnyFolding(curwin)) | |
| 2656 { | |
| 2657 while (--n >= 0 | |
| 2658 && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
| 2659 { | |
| 2660 (void)hasFolding(curwin->w_cursor.lnum, NULL, | |
| 2661 &curwin->w_cursor.lnum); | |
| 2662 ++curwin->w_cursor.lnum; | |
| 2663 } | |
| 2664 } | |
| 2665 else | |
| 2666 # endif | |
| 2667 curwin->w_cursor.lnum += n; | |
| 2668 check_cursor_lnum(); | |
| 2669 } | |
| 2670 #else | |
| 2671 /* try to put the cursor in the same screen line */ | |
| 2672 while ((curwin->w_cursor.lnum < curwin->w_topline || scrolled > 0) | |
| 2673 && curwin->w_cursor.lnum < curwin->w_botline - 1) | |
| 2674 { | |
| 2675 scrolled -= plines(curwin->w_cursor.lnum); | |
| 2676 if (scrolled < 0 && curwin->w_cursor.lnum >= curwin->w_topline) | |
| 2677 break; | |
| 2678 # ifdef FEAT_FOLDING | |
| 2679 (void)hasFolding(curwin->w_cursor.lnum, NULL, | |
| 2680 &curwin->w_cursor.lnum); | |
| 2681 # endif | |
| 2682 ++curwin->w_cursor.lnum; | |
| 2683 } | |
| 2684 #endif | |
| 2685 } | |
| 2686 else | |
| 2687 { | |
| 2688 /* | |
| 2689 * scroll the text down | |
| 2690 */ | |
| 2691 while (n > 0 && curwin->w_topline > 1) | |
| 2692 { | |
| 2693 #ifdef FEAT_DIFF | |
| 2694 if (curwin->w_topfill < diff_check_fill(curwin, curwin->w_topline)) | |
| 2695 { | |
| 2696 i = 1; | |
| 2697 if (--n < 0 && scrolled > 0) | |
| 2698 break; | |
| 2699 ++curwin->w_topfill; | |
| 2700 } | |
| 2701 else | |
| 2702 #endif | |
| 2703 { | |
|
7103
84d318257a45
commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2704 i = PLINES_NOFILL(curwin->w_topline - 1); |
| 7 | 2705 n -= i; |
| 2706 if (n < 0 && scrolled > 0) | |
| 2707 break; | |
| 2708 --curwin->w_topline; | |
| 2709 #ifdef FEAT_FOLDING | |
| 2710 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 2711 #endif | |
| 2712 #ifdef FEAT_DIFF | |
| 2713 curwin->w_topfill = 0; | |
| 2714 #endif | |
| 2715 } | |
| 2716 curwin->w_valid &= ~(VALID_CROW|VALID_WROW| | |
| 2717 VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2718 scrolled += i; | |
| 2719 #ifndef KEEP_SCREEN_LINE | |
| 2720 if (curwin->w_cursor.lnum > 1) | |
| 2721 { | |
| 2722 --curwin->w_cursor.lnum; | |
| 2723 curwin->w_valid &= ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
| 2724 } | |
| 2725 #endif | |
| 2726 } | |
| 2727 #ifndef KEEP_SCREEN_LINE | |
| 2728 /* | |
| 2729 * When hit top of the file: move cursor up. | |
| 2730 */ | |
| 2731 if (n > 0) | |
| 2732 { | |
| 2733 if (curwin->w_cursor.lnum <= (linenr_T)n) | |
| 2734 curwin->w_cursor.lnum = 1; | |
| 2735 else | |
| 2736 # ifdef FEAT_FOLDING | |
| 2737 if (hasAnyFolding(curwin)) | |
| 2738 { | |
| 2739 while (--n >= 0 && curwin->w_cursor.lnum > 1) | |
| 2740 { | |
| 2741 --curwin->w_cursor.lnum; | |
| 2742 (void)hasFolding(curwin->w_cursor.lnum, | |
| 2743 &curwin->w_cursor.lnum, NULL); | |
| 2744 } | |
| 2745 } | |
| 2746 else | |
| 2747 # endif | |
| 2748 curwin->w_cursor.lnum -= n; | |
| 2749 } | |
| 2750 #else | |
| 2751 /* try to put the cursor in the same screen line */ | |
| 2752 scrolled += n; /* move cursor when topline is 1 */ | |
| 2753 while (curwin->w_cursor.lnum > curwin->w_topline | |
| 2754 && (scrolled > 0 || curwin->w_cursor.lnum >= curwin->w_botline)) | |
| 2755 { | |
| 2756 scrolled -= plines(curwin->w_cursor.lnum - 1); | |
| 2757 if (scrolled < 0 && curwin->w_cursor.lnum < curwin->w_botline) | |
| 2758 break; | |
| 2759 --curwin->w_cursor.lnum; | |
| 2760 # ifdef FEAT_FOLDING | |
| 2761 foldAdjustCursor(); | |
| 2762 # endif | |
| 2763 } | |
| 2764 #endif | |
| 2765 } | |
| 2766 # ifdef FEAT_FOLDING | |
| 2767 /* Move cursor to first line of closed fold. */ | |
| 2768 foldAdjustCursor(); | |
| 2769 # endif | |
| 2770 #ifdef FEAT_DIFF | |
| 2771 check_topfill(curwin, !flag); | |
| 2772 #endif | |
| 2773 cursor_correct(); | |
| 2774 beginline(BL_SOL | BL_FIX); | |
| 2775 redraw_later(VALID); | |
| 2776 } | |
|
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2777 |
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2778 #if defined(FEAT_CURSORBIND) || defined(PROTO) |
|
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|
2779 void |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
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diff
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|
2780 do_check_cursorbind(void) |
|
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2781 { |
|
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2782 linenr_T line = curwin->w_cursor.lnum; |
| 3415 | 2783 colnr_T col = curwin->w_cursor.col; |
| 2784 # ifdef FEAT_VIRTUALEDIT | |
| 2785 colnr_T coladd = curwin->w_cursor.coladd; | |
| 2786 # endif | |
| 3433 | 2787 colnr_T curswant = curwin->w_curswant; |
| 2788 int set_curswant = curwin->w_set_curswant; | |
|
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|
2789 win_T *old_curwin = curwin; |
|
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2790 buf_T *old_curbuf = curbuf; |
| 2693 | 2791 int restart_edit_save; |
|
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2792 int old_VIsual_select = VIsual_select; |
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2793 int old_VIsual_active = VIsual_active; |
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2794 |
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2795 /* |
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2796 * loop through the cursorbound windows |
|
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2797 */ |
|
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2798 VIsual_select = VIsual_active = 0; |
|
9649
fd9727ae3c49
commit https://github.com/vim/vim/commit/2932359000b2f918d5fade79ea4d124d5943cd07
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parents:
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diff
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|
2799 FOR_ALL_WINDOWS(curwin) |
|
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2800 { |
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|
2801 curbuf = curwin->w_buffer; |
|
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2802 /* skip original window and windows with 'noscrollbind' */ |
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2803 if (curwin != old_curwin && curwin->w_p_crb) |
|
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2804 { |
|
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2805 # ifdef FEAT_DIFF |
|
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2806 if (curwin->w_p_diff) |
|
10295
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commit https://github.com/vim/vim/commit/025e3e0bafbc85cc4e365145af711edf99d0a90d
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diff
changeset
|
2807 curwin->w_cursor.lnum = |
|
d0b74b18e4b5
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|
2808 diff_get_corresponding_line(old_curbuf, line); |
|
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2809 else |
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2810 # endif |
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2811 curwin->w_cursor.lnum = line; |
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2812 curwin->w_cursor.col = col; |
| 3415 | 2813 # ifdef FEAT_VIRTUALEDIT |
| 2814 curwin->w_cursor.coladd = coladd; | |
| 2815 # endif | |
| 3433 | 2816 curwin->w_curswant = curswant; |
| 2817 curwin->w_set_curswant = set_curswant; | |
|
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2818 |
| 2693 | 2819 /* Make sure the cursor is in a valid position. Temporarily set |
| 2820 * "restart_edit" to allow the cursor to be beyond the EOL. */ | |
| 2821 restart_edit_save = restart_edit; | |
| 2822 restart_edit = TRUE; | |
|
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2823 check_cursor(); |
|
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2824 # ifdef FEAT_SYN_HL |
|
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2825 if (curwin->w_p_cul || curwin->w_p_cuc) |
|
10583
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2826 validate_cursor(); |
|
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2827 # endif |
| 2693 | 2828 restart_edit = restart_edit_save; |
|
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2829 # ifdef FEAT_MBYTE |
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2830 /* Correct cursor for multi-byte character. */ |
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2831 if (has_mbyte) |
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2832 mb_adjust_cursor(); |
|
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2833 # endif |
|
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2834 redraw_later(VALID); |
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2835 |
| 2688 | 2836 /* Only scroll when 'scrollbind' hasn't done this. */ |
| 2837 if (!curwin->w_p_scb) | |
| 2838 update_topline(); | |
|
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2839 curwin->w_redr_status = TRUE; |
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2840 } |
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2841 } |
|
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2842 |
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|
2843 /* |
|
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2844 * reset current-window |
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2845 */ |
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2846 VIsual_select = old_VIsual_select; |
|
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2847 VIsual_active = old_VIsual_active; |
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2848 curwin = old_curwin; |
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2849 curbuf = old_curbuf; |
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2850 } |
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|
2851 #endif /* FEAT_CURSORBIND */ |