Mercurial > vim
annotate src/move.c @ 14862:27b9a84395b5 v8.1.0443
patch 8.1.0443: unnecessary static function prototypes
commit https://github.com/vim/vim/commit/6dff58f15cede9139b2fcfc64c9064326ea3d3b0
Author: Bram Moolenaar <Bram@vim.org>
Date: Sun Sep 30 21:43:26 2018 +0200
patch 8.1.0443: unnecessary static function prototypes
Problem: Unnecessary static function prototypes.
Solution: Remove unnecessary prototypes.
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Sun, 30 Sep 2018 21:45:07 +0200 |
| parents | 10107703b9b2 |
| children | a8ed1cb85859 |
| rev | line source |
|---|---|
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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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22 static void redraw_for_cursorline(win_T *wp); |
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23 static int scrolljump_value(void); |
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24 static int check_top_offset(void); |
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25 static void curs_rows(win_T *wp); |
| 7 | 26 |
| 27 typedef struct | |
| 28 { | |
| 29 linenr_T lnum; /* line number */ | |
| 30 #ifdef FEAT_DIFF | |
| 31 int fill; /* filler lines */ | |
| 32 #endif | |
| 33 int height; /* height of added line */ | |
| 34 } lineoff_T; | |
| 35 | |
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36 static void topline_back(lineoff_T *lp); |
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37 static void botline_forw(lineoff_T *lp); |
| 7 | 38 |
| 39 /* | |
| 40 * Compute wp->w_botline for the current wp->w_topline. Can be called after | |
| 41 * wp->w_topline changed. | |
| 42 */ | |
| 43 static void | |
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44 comp_botline(win_T *wp) |
| 7 | 45 { |
| 46 int n; | |
| 47 linenr_T lnum; | |
| 48 int done; | |
| 49 #ifdef FEAT_FOLDING | |
| 50 linenr_T last; | |
| 51 int folded; | |
| 52 #endif | |
| 53 | |
| 54 /* | |
| 55 * If w_cline_row is valid, start there. | |
| 56 * Otherwise have to start at w_topline. | |
| 57 */ | |
| 58 check_cursor_moved(wp); | |
| 59 if (wp->w_valid & VALID_CROW) | |
| 60 { | |
| 61 lnum = wp->w_cursor.lnum; | |
| 62 done = wp->w_cline_row; | |
| 63 } | |
| 64 else | |
| 65 { | |
| 66 lnum = wp->w_topline; | |
| 67 done = 0; | |
| 68 } | |
| 69 | |
| 70 for ( ; lnum <= wp->w_buffer->b_ml.ml_line_count; ++lnum) | |
| 71 { | |
| 72 #ifdef FEAT_FOLDING | |
| 73 last = lnum; | |
| 74 folded = FALSE; | |
| 75 if (hasFoldingWin(wp, lnum, NULL, &last, TRUE, NULL)) | |
| 76 { | |
| 77 n = 1; | |
| 78 folded = TRUE; | |
| 79 } | |
| 80 else | |
| 81 #endif | |
| 82 #ifdef FEAT_DIFF | |
| 83 if (lnum == wp->w_topline) | |
| 84 n = plines_win_nofill(wp, lnum, TRUE) + wp->w_topfill; | |
| 85 else | |
| 86 #endif | |
| 87 n = plines_win(wp, lnum, TRUE); | |
| 88 if ( | |
| 89 #ifdef FEAT_FOLDING | |
| 90 lnum <= wp->w_cursor.lnum && last >= wp->w_cursor.lnum | |
| 91 #else | |
| 92 lnum == wp->w_cursor.lnum | |
| 93 #endif | |
| 94 ) | |
| 95 { | |
| 96 wp->w_cline_row = done; | |
| 97 wp->w_cline_height = n; | |
| 98 #ifdef FEAT_FOLDING | |
| 99 wp->w_cline_folded = folded; | |
| 100 #endif | |
| 5764 | 101 redraw_for_cursorline(wp); |
| 7 | 102 wp->w_valid |= (VALID_CROW|VALID_CHEIGHT); |
| 103 } | |
| 104 if (done + n > wp->w_height) | |
| 105 break; | |
| 106 done += n; | |
| 107 #ifdef FEAT_FOLDING | |
| 108 lnum = last; | |
| 109 #endif | |
| 110 } | |
| 111 | |
| 112 /* wp->w_botline is the line that is just below the window */ | |
| 113 wp->w_botline = lnum; | |
| 114 wp->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 115 | |
| 116 set_empty_rows(wp, done); | |
| 117 } | |
| 118 | |
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119 #ifdef FEAT_SYN_HL |
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120 static linenr_T last_cursorline = 0; |
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121 |
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122 void |
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123 reset_cursorline(void) |
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124 { |
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125 last_cursorline = 0; |
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126 } |
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127 #endif |
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128 |
| 7 | 129 /* |
| 5764 | 130 * Redraw when w_cline_row changes and 'relativenumber' or 'cursorline' is |
| 131 * set. | |
| 132 */ | |
| 133 static void | |
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134 redraw_for_cursorline(win_T *wp) |
| 5764 | 135 { |
| 136 if ((wp->w_p_rnu | |
| 137 #ifdef FEAT_SYN_HL | |
| 138 || wp->w_p_cul | |
| 139 #endif | |
| 140 ) | |
| 141 && (wp->w_valid & VALID_CROW) == 0 | |
| 142 # ifdef FEAT_INS_EXPAND | |
| 143 && !pum_visible() | |
| 144 # endif | |
| 145 ) | |
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146 { |
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147 if (wp->w_p_rnu) |
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148 // win_line() will redraw the number column only. |
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149 redraw_win_later(wp, VALID); |
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150 #ifdef FEAT_SYN_HL |
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151 if (wp->w_p_cul) |
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152 { |
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153 if (wp->w_redr_type <= VALID && last_cursorline != 0) |
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154 { |
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155 // "last_cursorline" may be set for another window, worst case |
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156 // we redraw too much. This is optimized for moving the cursor |
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157 // around in the same window. |
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158 redrawWinline(wp, last_cursorline, FALSE); |
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159 redrawWinline(wp, wp->w_cursor.lnum, FALSE); |
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160 redraw_win_later(wp, VALID); |
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161 } |
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162 else |
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163 redraw_win_later(wp, SOME_VALID); |
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164 last_cursorline = wp->w_cursor.lnum; |
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165 } |
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166 #endif |
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167 } |
| 5764 | 168 } |
| 169 | |
| 170 /* | |
| 7 | 171 * Update curwin->w_topline and redraw if necessary. |
| 172 * Used to update the screen before printing a message. | |
| 173 */ | |
| 174 void | |
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175 update_topline_redraw(void) |
| 7 | 176 { |
| 177 update_topline(); | |
| 178 if (must_redraw) | |
| 179 update_screen(0); | |
| 180 } | |
| 181 | |
| 182 /* | |
| 183 * Update curwin->w_topline to move the cursor onto the screen. | |
| 184 */ | |
| 185 void | |
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186 update_topline(void) |
| 7 | 187 { |
| 188 long line_count; | |
| 189 int halfheight; | |
| 190 int n; | |
| 191 linenr_T old_topline; | |
| 192 #ifdef FEAT_DIFF | |
| 193 int old_topfill; | |
| 194 #endif | |
| 195 #ifdef FEAT_FOLDING | |
| 196 linenr_T lnum; | |
| 197 #endif | |
| 198 int check_topline = FALSE; | |
| 199 int check_botline = FALSE; | |
| 200 #ifdef FEAT_MOUSE | |
| 201 int save_so = p_so; | |
| 202 #endif | |
| 203 | |
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204 /* If there is no valid screen and when the window height is zero just use |
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205 * the cursor line. */ |
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206 if (!screen_valid(TRUE) || curwin->w_height == 0) |
| 6247 | 207 { |
| 208 curwin->w_topline = curwin->w_cursor.lnum; | |
| 209 curwin->w_botline = curwin->w_topline; | |
| 210 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 211 curwin->w_scbind_pos = 1; | |
| 212 return; | |
| 213 } | |
| 214 | |
| 7 | 215 check_cursor_moved(curwin); |
| 216 if (curwin->w_valid & VALID_TOPLINE) | |
| 217 return; | |
| 218 | |
| 219 #ifdef FEAT_MOUSE | |
| 220 /* When dragging with the mouse, don't scroll that quickly */ | |
| 1121 | 221 if (mouse_dragging > 0) |
| 7 | 222 p_so = mouse_dragging - 1; |
| 223 #endif | |
| 224 | |
| 225 old_topline = curwin->w_topline; | |
| 226 #ifdef FEAT_DIFF | |
| 227 old_topfill = curwin->w_topfill; | |
| 228 #endif | |
| 229 | |
| 230 /* | |
| 231 * If the buffer is empty, always set topline to 1. | |
| 232 */ | |
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233 if (BUFEMPTY()) /* special case - file is empty */ |
| 7 | 234 { |
| 235 if (curwin->w_topline != 1) | |
| 236 redraw_later(NOT_VALID); | |
| 237 curwin->w_topline = 1; | |
| 238 curwin->w_botline = 2; | |
| 239 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 240 curwin->w_scbind_pos = 1; | |
| 241 } | |
| 242 | |
| 243 /* | |
| 244 * If the cursor is above or near the top of the window, scroll the window | |
| 245 * to show the line the cursor is in, with 'scrolloff' context. | |
| 246 */ | |
| 247 else | |
| 248 { | |
| 249 if (curwin->w_topline > 1) | |
| 250 { | |
| 251 /* If the cursor is above topline, scrolling is always needed. | |
| 252 * If the cursor is far below topline and there is no folding, | |
| 253 * scrolling down is never needed. */ | |
| 254 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 255 check_topline = TRUE; | |
| 256 else if (check_top_offset()) | |
| 257 check_topline = TRUE; | |
| 258 } | |
| 259 #ifdef FEAT_DIFF | |
| 260 /* Check if there are more filler lines than allowed. */ | |
| 261 if (!check_topline && curwin->w_topfill > diff_check_fill(curwin, | |
| 262 curwin->w_topline)) | |
| 263 check_topline = TRUE; | |
| 264 #endif | |
| 265 | |
| 266 if (check_topline) | |
| 267 { | |
| 268 halfheight = curwin->w_height / 2 - 1; | |
| 269 if (halfheight < 2) | |
| 270 halfheight = 2; | |
| 271 | |
| 272 #ifdef FEAT_FOLDING | |
| 273 if (hasAnyFolding(curwin)) | |
| 274 { | |
| 275 /* Count the number of logical lines between the cursor and | |
| 276 * topline + p_so (approximation of how much will be | |
| 277 * scrolled). */ | |
| 278 n = 0; | |
| 279 for (lnum = curwin->w_cursor.lnum; | |
| 280 lnum < curwin->w_topline + p_so; ++lnum) | |
| 281 { | |
| 282 ++n; | |
| 283 /* stop at end of file or when we know we are far off */ | |
| 284 if (lnum >= curbuf->b_ml.ml_line_count || n >= halfheight) | |
| 285 break; | |
| 286 (void)hasFolding(lnum, NULL, &lnum); | |
| 287 } | |
| 288 } | |
| 289 else | |
| 290 #endif | |
| 291 n = curwin->w_topline + p_so - curwin->w_cursor.lnum; | |
| 292 | |
| 293 /* If we weren't very close to begin with, we scroll to put the | |
| 294 * cursor in the middle of the window. Otherwise put the cursor | |
| 295 * near the top of the window. */ | |
| 296 if (n >= halfheight) | |
| 297 scroll_cursor_halfway(FALSE); | |
| 298 else | |
| 299 { | |
| 532 | 300 scroll_cursor_top(scrolljump_value(), FALSE); |
| 7 | 301 check_botline = TRUE; |
| 302 } | |
| 303 } | |
| 304 | |
| 305 else | |
| 306 { | |
| 307 #ifdef FEAT_FOLDING | |
| 308 /* Make sure topline is the first line of a fold. */ | |
| 309 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 310 #endif | |
| 311 check_botline = TRUE; | |
| 312 } | |
| 313 } | |
| 314 | |
| 315 /* | |
| 316 * If the cursor is below the bottom of the window, scroll the window | |
| 317 * to put the cursor on the window. | |
| 318 * When w_botline is invalid, recompute it first, to avoid a redraw later. | |
| 319 * If w_botline was approximated, we might need a redraw later in a few | |
| 320 * cases, but we don't want to spend (a lot of) time recomputing w_botline | |
| 321 * for every small change. | |
| 322 */ | |
| 323 if (check_botline) | |
| 324 { | |
| 325 if (!(curwin->w_valid & VALID_BOTLINE_AP)) | |
| 326 validate_botline(); | |
| 327 | |
| 328 if (curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 329 { | |
| 1744 | 330 if (curwin->w_cursor.lnum < curwin->w_botline) |
| 331 { | |
| 332 if (((long)curwin->w_cursor.lnum | |
| 7 | 333 >= (long)curwin->w_botline - p_so |
| 334 #ifdef FEAT_FOLDING | |
| 335 || hasAnyFolding(curwin) | |
| 336 #endif | |
| 337 )) | |
| 1744 | 338 { |
| 7 | 339 lineoff_T loff; |
| 340 | |
| 1744 | 341 /* Cursor is (a few lines) above botline, check if there are |
| 342 * 'scrolloff' window lines below the cursor. If not, need to | |
| 343 * scroll. */ | |
| 7 | 344 n = curwin->w_empty_rows; |
| 345 loff.lnum = curwin->w_cursor.lnum; | |
| 346 #ifdef FEAT_FOLDING | |
| 347 /* In a fold go to its last line. */ | |
| 348 (void)hasFolding(loff.lnum, NULL, &loff.lnum); | |
| 349 #endif | |
| 350 #ifdef FEAT_DIFF | |
| 351 loff.fill = 0; | |
| 352 n += curwin->w_filler_rows; | |
| 353 #endif | |
| 354 loff.height = 0; | |
| 355 while (loff.lnum < curwin->w_botline | |
| 356 #ifdef FEAT_DIFF | |
| 357 && (loff.lnum + 1 < curwin->w_botline || loff.fill == 0) | |
| 358 #endif | |
| 359 ) | |
| 360 { | |
| 361 n += loff.height; | |
| 362 if (n >= p_so) | |
| 363 break; | |
| 364 botline_forw(&loff); | |
| 365 } | |
| 366 if (n >= p_so) | |
| 367 /* sufficient context, no need to scroll */ | |
| 368 check_botline = FALSE; | |
| 1744 | 369 } |
| 370 else | |
| 371 /* sufficient context, no need to scroll */ | |
| 372 check_botline = FALSE; | |
| 7 | 373 } |
| 374 if (check_botline) | |
| 375 { | |
| 376 #ifdef FEAT_FOLDING | |
| 377 if (hasAnyFolding(curwin)) | |
| 378 { | |
| 379 /* Count the number of logical lines between the cursor and | |
| 380 * botline - p_so (approximation of how much will be | |
| 381 * scrolled). */ | |
| 382 line_count = 0; | |
| 383 for (lnum = curwin->w_cursor.lnum; | |
| 384 lnum >= curwin->w_botline - p_so; --lnum) | |
| 385 { | |
| 386 ++line_count; | |
| 387 /* stop at end of file or when we know we are far off */ | |
| 388 if (lnum <= 0 || line_count > curwin->w_height + 1) | |
| 389 break; | |
| 390 (void)hasFolding(lnum, &lnum, NULL); | |
| 391 } | |
| 392 } | |
| 393 else | |
| 394 #endif | |
| 395 line_count = curwin->w_cursor.lnum - curwin->w_botline | |
| 396 + 1 + p_so; | |
| 397 if (line_count <= curwin->w_height + 1) | |
| 532 | 398 scroll_cursor_bot(scrolljump_value(), FALSE); |
| 7 | 399 else |
| 400 scroll_cursor_halfway(FALSE); | |
| 401 } | |
| 402 } | |
| 403 } | |
| 404 curwin->w_valid |= VALID_TOPLINE; | |
| 405 | |
| 406 /* | |
| 407 * Need to redraw when topline changed. | |
| 408 */ | |
| 409 if (curwin->w_topline != old_topline | |
| 410 #ifdef FEAT_DIFF | |
| 411 || curwin->w_topfill != old_topfill | |
| 412 #endif | |
| 413 ) | |
| 414 { | |
| 3318 | 415 dollar_vcol = -1; |
| 740 | 416 if (curwin->w_skipcol != 0) |
| 7 | 417 { |
| 418 curwin->w_skipcol = 0; | |
| 419 redraw_later(NOT_VALID); | |
| 420 } | |
| 421 else | |
| 422 redraw_later(VALID); | |
| 423 /* May need to set w_skipcol when cursor in w_topline. */ | |
| 424 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 425 validate_cursor(); | |
| 426 } | |
| 427 | |
| 428 #ifdef FEAT_MOUSE | |
| 429 p_so = save_so; | |
| 430 #endif | |
| 431 } | |
| 432 | |
| 433 /* | |
| 532 | 434 * Return the scrolljump value to use for the current window. |
| 435 * When 'scrolljump' is positive use it as-is. | |
| 436 * When 'scrolljump' is negative use it as a percentage of the window height. | |
| 437 */ | |
| 438 static int | |
|
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changeset
|
439 scrolljump_value(void) |
| 532 | 440 { |
| 441 if (p_sj >= 0) | |
| 442 return (int)p_sj; | |
| 443 return (curwin->w_height * -p_sj) / 100; | |
| 444 } | |
| 445 | |
| 446 /* | |
| 7 | 447 * Return TRUE when there are not 'scrolloff' lines above the cursor for the |
| 448 * current window. | |
| 449 */ | |
| 450 static int | |
|
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451 check_top_offset(void) |
| 7 | 452 { |
| 453 lineoff_T loff; | |
| 454 int n; | |
| 455 | |
| 456 if (curwin->w_cursor.lnum < curwin->w_topline + p_so | |
| 457 #ifdef FEAT_FOLDING | |
| 458 || hasAnyFolding(curwin) | |
| 459 #endif | |
| 460 ) | |
| 461 { | |
| 462 loff.lnum = curwin->w_cursor.lnum; | |
| 463 #ifdef FEAT_DIFF | |
| 464 loff.fill = 0; | |
| 465 n = curwin->w_topfill; /* always have this context */ | |
| 466 #else | |
| 467 n = 0; | |
| 468 #endif | |
| 469 /* Count the visible screen lines above the cursor line. */ | |
| 470 while (n < p_so) | |
| 471 { | |
| 472 topline_back(&loff); | |
| 473 /* Stop when included a line above the window. */ | |
| 474 if (loff.lnum < curwin->w_topline | |
| 475 #ifdef FEAT_DIFF | |
| 476 || (loff.lnum == curwin->w_topline && loff.fill > 0) | |
| 477 #endif | |
| 478 ) | |
| 479 break; | |
| 480 n += loff.height; | |
| 481 } | |
| 482 if (n < p_so) | |
| 483 return TRUE; | |
| 484 } | |
| 485 return FALSE; | |
| 486 } | |
| 487 | |
| 488 void | |
|
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changeset
|
489 update_curswant(void) |
| 7 | 490 { |
| 491 if (curwin->w_set_curswant) | |
| 492 { | |
| 493 validate_virtcol(); | |
| 494 curwin->w_curswant = curwin->w_virtcol; | |
| 495 curwin->w_set_curswant = FALSE; | |
| 496 } | |
| 497 } | |
| 498 | |
| 499 /* | |
| 500 * Check if the cursor has moved. Set the w_valid flag accordingly. | |
| 501 */ | |
| 502 void | |
|
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503 check_cursor_moved(win_T *wp) |
| 7 | 504 { |
| 505 if (wp->w_cursor.lnum != wp->w_valid_cursor.lnum) | |
| 506 { | |
| 507 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 508 |VALID_CHEIGHT|VALID_CROW|VALID_TOPLINE); | |
| 509 wp->w_valid_cursor = wp->w_cursor; | |
| 510 wp->w_valid_leftcol = wp->w_leftcol; | |
| 511 } | |
| 512 else if (wp->w_cursor.col != wp->w_valid_cursor.col | |
| 513 || wp->w_leftcol != wp->w_valid_leftcol | |
| 514 #ifdef FEAT_VIRTUALEDIT | |
| 515 || wp->w_cursor.coladd != wp->w_valid_cursor.coladd | |
| 516 #endif | |
| 517 ) | |
| 518 { | |
| 519 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL); | |
| 520 wp->w_valid_cursor.col = wp->w_cursor.col; | |
| 521 wp->w_valid_leftcol = wp->w_leftcol; | |
| 522 #ifdef FEAT_VIRTUALEDIT | |
| 523 wp->w_valid_cursor.coladd = wp->w_cursor.coladd; | |
| 524 #endif | |
| 525 } | |
| 526 } | |
| 527 | |
| 528 /* | |
| 529 * Call this function when some window settings have changed, which require | |
| 530 * the cursor position, botline and topline to be recomputed and the window to | |
| 531 * be redrawn. E.g, when changing the 'wrap' option or folding. | |
| 532 */ | |
| 533 void | |
|
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534 changed_window_setting(void) |
| 7 | 535 { |
| 536 changed_window_setting_win(curwin); | |
| 537 } | |
| 538 | |
| 539 void | |
|
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540 changed_window_setting_win(win_T *wp) |
| 7 | 541 { |
| 542 wp->w_lines_valid = 0; | |
| 543 changed_line_abv_curs_win(wp); | |
| 544 wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP|VALID_TOPLINE); | |
| 545 redraw_win_later(wp, NOT_VALID); | |
| 546 } | |
| 547 | |
| 548 /* | |
| 549 * Set wp->w_topline to a certain number. | |
| 550 */ | |
| 551 void | |
|
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552 set_topline(win_T *wp, linenr_T lnum) |
| 7 | 553 { |
| 554 #ifdef FEAT_FOLDING | |
| 555 /* go to first of folded lines */ | |
| 556 (void)hasFoldingWin(wp, lnum, &lnum, NULL, TRUE, NULL); | |
| 557 #endif | |
| 558 /* Approximate the value of w_botline */ | |
| 559 wp->w_botline += lnum - wp->w_topline; | |
| 560 wp->w_topline = lnum; | |
| 1744 | 561 wp->w_topline_was_set = TRUE; |
| 7 | 562 #ifdef FEAT_DIFF |
| 563 wp->w_topfill = 0; | |
| 564 #endif | |
| 565 wp->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_TOPLINE); | |
| 566 /* Don't set VALID_TOPLINE here, 'scrolloff' needs to be checked. */ | |
| 567 redraw_later(VALID); | |
| 568 } | |
| 569 | |
| 570 /* | |
| 571 * Call this function when the length of the cursor line (in screen | |
| 572 * characters) has changed, and the change is before the cursor. | |
| 573 * Need to take care of w_botline separately! | |
| 574 */ | |
| 575 void | |
|
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576 changed_cline_bef_curs(void) |
| 7 | 577 { |
| 578 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 579 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 580 } | |
| 581 | |
| 582 void | |
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583 changed_cline_bef_curs_win(win_T *wp) |
| 7 | 584 { |
| 585 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 586 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 587 } | |
| 588 | |
| 589 /* | |
| 590 * Call this function when the length of a line (in screen characters) above | |
| 591 * the cursor have changed. | |
| 592 * Need to take care of w_botline separately! | |
| 593 */ | |
| 594 void | |
|
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595 changed_line_abv_curs(void) |
| 7 | 596 { |
| 597 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
| 598 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 599 } | |
| 600 | |
| 601 void | |
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602 changed_line_abv_curs_win(win_T *wp) |
| 7 | 603 { |
| 604 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
| 605 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 606 } | |
| 607 | |
| 608 /* | |
| 609 * Make sure the value of curwin->w_botline is valid. | |
| 610 */ | |
| 611 void | |
|
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612 validate_botline(void) |
| 7 | 613 { |
| 614 if (!(curwin->w_valid & VALID_BOTLINE)) | |
| 615 comp_botline(curwin); | |
| 616 } | |
| 617 | |
| 618 /* | |
| 619 * Mark curwin->w_botline as invalid (because of some change in the buffer). | |
| 620 */ | |
| 621 void | |
|
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622 invalidate_botline(void) |
| 7 | 623 { |
| 624 curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 625 } | |
| 626 | |
| 627 void | |
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628 invalidate_botline_win(win_T *wp) |
| 7 | 629 { |
| 630 wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 631 } | |
| 632 | |
| 633 void | |
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634 approximate_botline_win( |
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635 win_T *wp) |
| 7 | 636 { |
| 637 wp->w_valid &= ~VALID_BOTLINE; | |
| 638 } | |
| 639 | |
| 640 /* | |
| 641 * Return TRUE if curwin->w_wrow and curwin->w_wcol are valid. | |
| 642 */ | |
| 643 int | |
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644 cursor_valid(void) |
| 7 | 645 { |
| 646 check_cursor_moved(curwin); | |
| 647 return ((curwin->w_valid & (VALID_WROW|VALID_WCOL)) == | |
| 648 (VALID_WROW|VALID_WCOL)); | |
| 649 } | |
| 650 | |
| 651 /* | |
| 652 * Validate cursor position. Makes sure w_wrow and w_wcol are valid. | |
| 653 * w_topline must be valid, you may need to call update_topline() first! | |
| 654 */ | |
| 655 void | |
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656 validate_cursor(void) |
| 7 | 657 { |
| 658 check_cursor_moved(curwin); | |
| 659 if ((curwin->w_valid & (VALID_WCOL|VALID_WROW)) != (VALID_WCOL|VALID_WROW)) | |
| 660 curs_columns(TRUE); | |
| 661 } | |
| 662 | |
| 663 #if defined(FEAT_GUI) || defined(PROTO) | |
| 664 /* | |
| 665 * validate w_cline_row. | |
| 666 */ | |
| 667 void | |
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668 validate_cline_row(void) |
| 7 | 669 { |
| 670 /* | |
| 671 * First make sure that w_topline is valid (after moving the cursor). | |
| 672 */ | |
| 673 update_topline(); | |
| 674 check_cursor_moved(curwin); | |
| 675 if (!(curwin->w_valid & VALID_CROW)) | |
| 6441 | 676 curs_rows(curwin); |
| 7 | 677 } |
| 678 #endif | |
| 679 | |
| 680 /* | |
| 681 * Compute wp->w_cline_row and wp->w_cline_height, based on the current value | |
|
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682 * of wp->w_topline. |
| 7 | 683 */ |
| 684 static void | |
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|
685 curs_rows(win_T *wp) |
| 7 | 686 { |
| 687 linenr_T lnum; | |
| 688 int i; | |
| 689 int all_invalid; | |
| 690 int valid; | |
| 691 #ifdef FEAT_FOLDING | |
| 692 long fold_count; | |
| 693 #endif | |
| 694 | |
| 695 /* Check if wp->w_lines[].wl_size is invalid */ | |
| 696 all_invalid = (!redrawing() | |
| 697 || wp->w_lines_valid == 0 | |
| 698 || wp->w_lines[0].wl_lnum > wp->w_topline); | |
| 699 i = 0; | |
| 700 wp->w_cline_row = 0; | |
| 701 for (lnum = wp->w_topline; lnum < wp->w_cursor.lnum; ++i) | |
| 702 { | |
| 703 valid = FALSE; | |
| 704 if (!all_invalid && i < wp->w_lines_valid) | |
| 705 { | |
| 706 if (wp->w_lines[i].wl_lnum < lnum || !wp->w_lines[i].wl_valid) | |
| 707 continue; /* skip changed or deleted lines */ | |
| 708 if (wp->w_lines[i].wl_lnum == lnum) | |
| 709 { | |
| 710 #ifdef FEAT_FOLDING | |
| 711 /* Check for newly inserted lines below this row, in which | |
| 712 * case we need to check for folded lines. */ | |
| 713 if (!wp->w_buffer->b_mod_set | |
| 714 || wp->w_lines[i].wl_lastlnum < wp->w_cursor.lnum | |
| 715 || wp->w_buffer->b_mod_top | |
| 716 > wp->w_lines[i].wl_lastlnum + 1) | |
| 717 #endif | |
| 718 valid = TRUE; | |
| 719 } | |
| 720 else if (wp->w_lines[i].wl_lnum > lnum) | |
| 721 --i; /* hold at inserted lines */ | |
| 722 } | |
| 723 if (valid | |
| 724 #ifdef FEAT_DIFF | |
| 725 && (lnum != wp->w_topline || !wp->w_p_diff) | |
| 726 #endif | |
| 727 ) | |
| 728 { | |
| 729 #ifdef FEAT_FOLDING | |
| 730 lnum = wp->w_lines[i].wl_lastlnum + 1; | |
| 731 /* Cursor inside folded lines, don't count this row */ | |
| 732 if (lnum > wp->w_cursor.lnum) | |
| 733 break; | |
| 734 #else | |
| 735 ++lnum; | |
| 736 #endif | |
| 737 wp->w_cline_row += wp->w_lines[i].wl_size; | |
| 738 } | |
| 739 else | |
| 740 { | |
| 741 #ifdef FEAT_FOLDING | |
| 742 fold_count = foldedCount(wp, lnum, NULL); | |
| 743 if (fold_count) | |
| 744 { | |
| 745 lnum += fold_count; | |
| 746 if (lnum > wp->w_cursor.lnum) | |
| 747 break; | |
| 748 ++wp->w_cline_row; | |
| 749 } | |
| 750 else | |
| 751 #endif | |
| 752 #ifdef FEAT_DIFF | |
| 753 if (lnum == wp->w_topline) | |
| 754 wp->w_cline_row += plines_win_nofill(wp, lnum++, TRUE) | |
| 755 + wp->w_topfill; | |
| 756 else | |
| 757 #endif | |
| 758 wp->w_cline_row += plines_win(wp, lnum++, TRUE); | |
| 759 } | |
| 760 } | |
| 761 | |
| 762 check_cursor_moved(wp); | |
| 763 if (!(wp->w_valid & VALID_CHEIGHT)) | |
| 764 { | |
| 765 if (all_invalid | |
| 766 || i == wp->w_lines_valid | |
| 767 || (i < wp->w_lines_valid | |
| 768 && (!wp->w_lines[i].wl_valid | |
| 769 || wp->w_lines[i].wl_lnum != wp->w_cursor.lnum))) | |
| 770 { | |
| 771 #ifdef FEAT_DIFF | |
| 772 if (wp->w_cursor.lnum == wp->w_topline) | |
| 773 wp->w_cline_height = plines_win_nofill(wp, wp->w_cursor.lnum, | |
| 774 TRUE) + wp->w_topfill; | |
| 775 else | |
| 776 #endif | |
| 777 wp->w_cline_height = plines_win(wp, wp->w_cursor.lnum, TRUE); | |
| 778 #ifdef FEAT_FOLDING | |
| 779 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
| 780 NULL, NULL, TRUE, NULL); | |
| 781 #endif | |
| 782 } | |
| 783 else if (i > wp->w_lines_valid) | |
| 784 { | |
| 785 /* a line that is too long to fit on the last screen line */ | |
| 786 wp->w_cline_height = 0; | |
| 787 #ifdef FEAT_FOLDING | |
| 788 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
| 789 NULL, NULL, TRUE, NULL); | |
| 790 #endif | |
| 791 } | |
| 792 else | |
| 793 { | |
| 794 wp->w_cline_height = wp->w_lines[i].wl_size; | |
| 795 #ifdef FEAT_FOLDING | |
| 796 wp->w_cline_folded = wp->w_lines[i].wl_folded; | |
| 797 #endif | |
| 798 } | |
| 799 } | |
| 800 | |
| 5764 | 801 redraw_for_cursorline(curwin); |
| 7 | 802 wp->w_valid |= VALID_CROW|VALID_CHEIGHT; |
| 803 | |
| 804 } | |
| 805 | |
| 806 /* | |
| 807 * Validate curwin->w_virtcol only. | |
| 808 */ | |
| 809 void | |
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810 validate_virtcol(void) |
| 7 | 811 { |
| 812 validate_virtcol_win(curwin); | |
| 813 } | |
| 814 | |
| 815 /* | |
| 816 * Validate wp->w_virtcol only. | |
| 817 */ | |
| 818 void | |
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819 validate_virtcol_win(win_T *wp) |
| 7 | 820 { |
| 821 check_cursor_moved(wp); | |
| 822 if (!(wp->w_valid & VALID_VIRTCOL)) | |
| 823 { | |
| 824 getvvcol(wp, &wp->w_cursor, NULL, &(wp->w_virtcol), NULL); | |
| 825 wp->w_valid |= VALID_VIRTCOL; | |
| 740 | 826 #ifdef FEAT_SYN_HL |
| 752 | 827 if (wp->w_p_cuc |
| 828 # ifdef FEAT_INS_EXPAND | |
| 829 && !pum_visible() | |
| 830 # endif | |
| 831 ) | |
| 740 | 832 redraw_win_later(wp, SOME_VALID); |
| 833 #endif | |
| 7 | 834 } |
| 835 } | |
| 836 | |
| 837 /* | |
| 838 * Validate curwin->w_cline_height only. | |
| 839 */ | |
| 840 static void | |
|
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841 validate_cheight(void) |
| 7 | 842 { |
| 843 check_cursor_moved(curwin); | |
| 844 if (!(curwin->w_valid & VALID_CHEIGHT)) | |
| 845 { | |
| 846 #ifdef FEAT_DIFF | |
| 847 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 848 curwin->w_cline_height = plines_nofill(curwin->w_cursor.lnum) | |
| 849 + curwin->w_topfill; | |
| 850 else | |
| 851 #endif | |
| 852 curwin->w_cline_height = plines(curwin->w_cursor.lnum); | |
| 853 #ifdef FEAT_FOLDING | |
| 854 curwin->w_cline_folded = hasFolding(curwin->w_cursor.lnum, NULL, NULL); | |
| 855 #endif | |
| 856 curwin->w_valid |= VALID_CHEIGHT; | |
| 857 } | |
| 858 } | |
| 859 | |
| 860 /* | |
| 1668 | 861 * Validate w_wcol and w_virtcol only. |
| 7 | 862 */ |
| 863 void | |
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864 validate_cursor_col(void) |
| 7 | 865 { |
| 866 colnr_T off; | |
| 867 colnr_T col; | |
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868 int width; |
| 7 | 869 |
| 870 validate_virtcol(); | |
| 871 if (!(curwin->w_valid & VALID_WCOL)) | |
| 872 { | |
| 873 col = curwin->w_virtcol; | |
| 874 off = curwin_col_off(); | |
| 875 col += off; | |
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876 width = curwin->w_width - off + curwin_col_off2(); |
| 7 | 877 |
| 878 /* long line wrapping, adjust curwin->w_wrow */ | |
| 1668 | 879 if (curwin->w_p_wrap |
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880 && col >= (colnr_T)curwin->w_width |
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881 && width > 0) |
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882 /* use same formula as what is used in curs_columns() */ |
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883 col -= ((col - curwin->w_width) / width + 1) * width; |
| 1668 | 884 if (col > (int)curwin->w_leftcol) |
| 885 col -= curwin->w_leftcol; | |
| 886 else | |
| 887 col = 0; | |
| 7 | 888 curwin->w_wcol = col; |
| 1668 | 889 |
| 7 | 890 curwin->w_valid |= VALID_WCOL; |
| 891 } | |
| 892 } | |
| 893 | |
| 894 /* | |
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895 * Compute offset of a window, occupied by absolute or relative line number, |
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896 * fold column and sign column (these don't move when scrolling horizontally). |
| 7 | 897 */ |
| 898 int | |
|
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899 win_col_off(win_T *wp) |
| 7 | 900 { |
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901 return (((wp->w_p_nu || wp->w_p_rnu) ? number_width(wp) + 1 : 0) |
| 7 | 902 #ifdef FEAT_CMDWIN |
| 903 + (cmdwin_type == 0 || wp != curwin ? 0 : 1) | |
| 904 #endif | |
| 905 #ifdef FEAT_FOLDING | |
| 906 + wp->w_p_fdc | |
| 907 #endif | |
| 908 #ifdef FEAT_SIGNS | |
|
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909 + (signcolumn_on(wp) ? 2 : 0) |
| 7 | 910 #endif |
| 911 ); | |
| 912 } | |
| 913 | |
| 914 int | |
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915 curwin_col_off(void) |
| 7 | 916 { |
| 917 return win_col_off(curwin); | |
| 918 } | |
| 919 | |
| 920 /* | |
| 921 * Return the difference in column offset for the second screen line of a | |
|
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922 * wrapped line. It's 8 if 'number' or 'relativenumber' is on and 'n' is in |
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923 * 'cpoptions'. |
| 7 | 924 */ |
| 925 int | |
|
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926 win_col_off2(win_T *wp) |
| 7 | 927 { |
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928 if ((wp->w_p_nu || wp->w_p_rnu) && vim_strchr(p_cpo, CPO_NUMCOL) != NULL) |
| 13 | 929 return number_width(wp) + 1; |
| 7 | 930 return 0; |
| 931 } | |
| 932 | |
| 933 int | |
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934 curwin_col_off2(void) |
| 7 | 935 { |
| 936 return win_col_off2(curwin); | |
| 937 } | |
| 938 | |
| 939 /* | |
| 940 * compute curwin->w_wcol and curwin->w_virtcol. | |
| 941 * Also updates curwin->w_wrow and curwin->w_cline_row. | |
| 942 * Also updates curwin->w_leftcol. | |
| 943 */ | |
| 944 void | |
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945 curs_columns( |
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946 int may_scroll) /* when TRUE, may scroll horizontally */ |
| 7 | 947 { |
| 948 int diff; | |
| 949 int extra; /* offset for first screen line */ | |
| 950 int off_left, off_right; | |
| 951 int n; | |
| 952 int p_lines; | |
| 953 int width = 0; | |
| 954 int textwidth; | |
| 955 int new_leftcol; | |
| 956 colnr_T startcol; | |
| 957 colnr_T endcol; | |
| 958 colnr_T prev_skipcol; | |
| 959 | |
| 960 /* | |
| 961 * First make sure that w_topline is valid (after moving the cursor). | |
| 962 */ | |
| 963 update_topline(); | |
| 964 | |
| 965 /* | |
| 966 * Next make sure that w_cline_row is valid. | |
| 967 */ | |
| 968 if (!(curwin->w_valid & VALID_CROW)) | |
| 6441 | 969 curs_rows(curwin); |
| 7 | 970 |
| 971 /* | |
| 972 * Compute the number of virtual columns. | |
| 973 */ | |
| 974 #ifdef FEAT_FOLDING | |
| 975 if (curwin->w_cline_folded) | |
| 976 /* In a folded line the cursor is always in the first column */ | |
| 977 startcol = curwin->w_virtcol = endcol = curwin->w_leftcol; | |
| 978 else | |
| 979 #endif | |
| 980 getvvcol(curwin, &curwin->w_cursor, | |
| 981 &startcol, &(curwin->w_virtcol), &endcol); | |
| 982 | |
| 983 /* remove '$' from change command when cursor moves onto it */ | |
| 984 if (startcol > dollar_vcol) | |
| 3318 | 985 dollar_vcol = -1; |
| 7 | 986 |
| 987 extra = curwin_col_off(); | |
| 988 curwin->w_wcol = curwin->w_virtcol + extra; | |
| 989 endcol += extra; | |
| 990 | |
| 991 /* | |
| 992 * Now compute w_wrow, counting screen lines from w_cline_row. | |
| 993 */ | |
| 994 curwin->w_wrow = curwin->w_cline_row; | |
| 995 | |
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996 textwidth = curwin->w_width - extra; |
| 7 | 997 if (textwidth <= 0) |
| 998 { | |
| 999 /* No room for text, put cursor in last char of window. */ | |
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1000 curwin->w_wcol = curwin->w_width - 1; |
| 7 | 1001 curwin->w_wrow = curwin->w_height - 1; |
| 1002 } | |
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1003 else if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 1004 { |
| 1005 width = textwidth + curwin_col_off2(); | |
| 1006 | |
| 1007 /* long line wrapping, adjust curwin->w_wrow */ | |
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1008 if (curwin->w_wcol >= curwin->w_width) |
| 7 | 1009 { |
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1010 /* this same formula is used in validate_cursor_col() */ |
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1011 n = (curwin->w_wcol - curwin->w_width) / width + 1; |
| 7 | 1012 curwin->w_wcol -= n * width; |
| 1013 curwin->w_wrow += n; | |
| 1014 | |
| 1015 #ifdef FEAT_LINEBREAK | |
| 1016 /* When cursor wraps to first char of next line in Insert | |
| 1017 * mode, the 'showbreak' string isn't shown, backup to first | |
| 1018 * column */ | |
| 1019 if (*p_sbr && *ml_get_cursor() == NUL | |
| 1020 && curwin->w_wcol == (int)vim_strsize(p_sbr)) | |
| 1021 curwin->w_wcol = 0; | |
| 1022 #endif | |
| 1023 } | |
| 1024 } | |
| 1025 | |
| 1026 /* No line wrapping: compute curwin->w_leftcol if scrolling is on and line | |
| 1027 * is not folded. | |
| 1028 * If scrolling is off, curwin->w_leftcol is assumed to be 0 */ | |
| 3263 | 1029 else if (may_scroll |
| 7 | 1030 #ifdef FEAT_FOLDING |
| 1031 && !curwin->w_cline_folded | |
| 1032 #endif | |
| 1033 ) | |
| 1034 { | |
| 1035 /* | |
| 1036 * If Cursor is left of the screen, scroll rightwards. | |
| 1037 * If Cursor is right of the screen, scroll leftwards | |
| 1038 * If we get closer to the edge than 'sidescrolloff', scroll a little | |
| 1039 * extra | |
| 1040 */ | |
| 1041 off_left = (int)startcol - (int)curwin->w_leftcol - p_siso; | |
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1042 off_right = (int)endcol - (int)(curwin->w_leftcol + curwin->w_width |
| 7 | 1043 - p_siso) + 1; |
| 1044 if (off_left < 0 || off_right > 0) | |
| 1045 { | |
| 1046 if (off_left < 0) | |
| 1047 diff = -off_left; | |
| 1048 else | |
| 1049 diff = off_right; | |
| 1050 | |
| 1051 /* When far off or not enough room on either side, put cursor in | |
| 1052 * middle of window. */ | |
| 1053 if (p_ss == 0 || diff >= textwidth / 2 || off_right >= off_left) | |
| 1054 new_leftcol = curwin->w_wcol - extra - textwidth / 2; | |
| 1055 else | |
| 1056 { | |
| 1057 if (diff < p_ss) | |
| 1058 diff = p_ss; | |
| 1059 if (off_left < 0) | |
| 1060 new_leftcol = curwin->w_leftcol - diff; | |
| 1061 else | |
| 1062 new_leftcol = curwin->w_leftcol + diff; | |
| 1063 } | |
| 1064 if (new_leftcol < 0) | |
| 1065 new_leftcol = 0; | |
| 1066 if (new_leftcol != (int)curwin->w_leftcol) | |
| 1067 { | |
| 1068 curwin->w_leftcol = new_leftcol; | |
| 1069 /* screen has to be redrawn with new curwin->w_leftcol */ | |
| 1070 redraw_later(NOT_VALID); | |
| 1071 } | |
| 1072 } | |
| 1073 curwin->w_wcol -= curwin->w_leftcol; | |
| 1074 } | |
| 1075 else if (curwin->w_wcol > (int)curwin->w_leftcol) | |
| 1076 curwin->w_wcol -= curwin->w_leftcol; | |
| 1077 else | |
| 1078 curwin->w_wcol = 0; | |
| 1079 | |
| 1080 #ifdef FEAT_DIFF | |
| 1081 /* Skip over filler lines. At the top use w_topfill, there | |
| 1082 * may be some filler lines above the window. */ | |
| 1083 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 1084 curwin->w_wrow += curwin->w_topfill; | |
| 1085 else | |
| 1086 curwin->w_wrow += diff_check_fill(curwin, curwin->w_cursor.lnum); | |
| 1087 #endif | |
| 1088 | |
| 1089 prev_skipcol = curwin->w_skipcol; | |
| 1090 | |
| 1091 p_lines = 0; | |
| 1092 if ((curwin->w_wrow >= curwin->w_height | |
| 1093 || ((prev_skipcol > 0 | |
| 1094 || curwin->w_wrow + p_so >= curwin->w_height) | |
| 1095 && (p_lines = | |
| 1096 #ifdef FEAT_DIFF | |
| 1097 plines_win_nofill | |
| 1098 #else | |
| 1099 plines_win | |
| 1100 #endif | |
| 1101 (curwin, curwin->w_cursor.lnum, FALSE)) | |
| 1102 - 1 >= curwin->w_height)) | |
| 1103 && curwin->w_height != 0 | |
| 1104 && curwin->w_cursor.lnum == curwin->w_topline | |
| 1105 && width > 0 | |
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1106 && curwin->w_width != 0) |
| 7 | 1107 { |
| 1108 /* Cursor past end of screen. Happens with a single line that does | |
| 1109 * not fit on screen. Find a skipcol to show the text around the | |
| 1110 * cursor. Avoid scrolling all the time. compute value of "extra": | |
| 1111 * 1: Less than "p_so" lines above | |
| 1112 * 2: Less than "p_so" lines below | |
| 1113 * 3: both of them */ | |
| 1114 extra = 0; | |
| 1115 if (curwin->w_skipcol + p_so * width > curwin->w_virtcol) | |
| 1116 extra = 1; | |
| 1117 /* Compute last display line of the buffer line that we want at the | |
| 1118 * bottom of the window. */ | |
| 1119 if (p_lines == 0) | |
| 1120 p_lines = plines_win(curwin, curwin->w_cursor.lnum, FALSE); | |
| 1121 --p_lines; | |
| 1122 if (p_lines > curwin->w_wrow + p_so) | |
| 1123 n = curwin->w_wrow + p_so; | |
| 1124 else | |
| 1125 n = p_lines; | |
| 1126 if ((colnr_T)n >= curwin->w_height + curwin->w_skipcol / width) | |
| 1127 extra += 2; | |
| 1128 | |
| 1129 if (extra == 3 || p_lines < p_so * 2) | |
| 1130 { | |
| 1131 /* not enough room for 'scrolloff', put cursor in the middle */ | |
| 1132 n = curwin->w_virtcol / width; | |
| 1133 if (n > curwin->w_height / 2) | |
| 1134 n -= curwin->w_height / 2; | |
| 1135 else | |
| 1136 n = 0; | |
| 1137 /* don't skip more than necessary */ | |
| 1138 if (n > p_lines - curwin->w_height + 1) | |
| 1139 n = p_lines - curwin->w_height + 1; | |
| 1140 curwin->w_skipcol = n * width; | |
| 1141 } | |
| 1142 else if (extra == 1) | |
| 1143 { | |
| 1144 /* less then 'scrolloff' lines above, decrease skipcol */ | |
| 1145 extra = (curwin->w_skipcol + p_so * width - curwin->w_virtcol | |
| 1146 + width - 1) / width; | |
| 1147 if (extra > 0) | |
| 1148 { | |
| 1149 if ((colnr_T)(extra * width) > curwin->w_skipcol) | |
| 1150 extra = curwin->w_skipcol / width; | |
| 1151 curwin->w_skipcol -= extra * width; | |
| 1152 } | |
| 1153 } | |
| 1154 else if (extra == 2) | |
| 1155 { | |
| 1156 /* less then 'scrolloff' lines below, increase skipcol */ | |
| 1157 endcol = (n - curwin->w_height + 1) * width; | |
| 1158 while (endcol > curwin->w_virtcol) | |
| 1159 endcol -= width; | |
| 1160 if (endcol > curwin->w_skipcol) | |
| 1161 curwin->w_skipcol = endcol; | |
| 1162 } | |
| 1163 | |
| 1164 curwin->w_wrow -= curwin->w_skipcol / width; | |
| 1165 if (curwin->w_wrow >= curwin->w_height) | |
| 1166 { | |
| 1167 /* small window, make sure cursor is in it */ | |
| 1168 extra = curwin->w_wrow - curwin->w_height + 1; | |
| 1169 curwin->w_skipcol += extra * width; | |
| 1170 curwin->w_wrow -= extra; | |
| 1171 } | |
| 1172 | |
| 1173 extra = ((int)prev_skipcol - (int)curwin->w_skipcol) / width; | |
| 1174 if (extra > 0) | |
| 1175 win_ins_lines(curwin, 0, extra, FALSE, FALSE); | |
| 1176 else if (extra < 0) | |
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1177 win_del_lines(curwin, 0, -extra, FALSE, FALSE, 0); |
| 7 | 1178 } |
| 1179 else | |
| 1180 curwin->w_skipcol = 0; | |
| 1181 if (prev_skipcol != curwin->w_skipcol) | |
| 1182 redraw_later(NOT_VALID); | |
| 1183 | |
| 740 | 1184 #ifdef FEAT_SYN_HL |
| 5749 | 1185 /* Redraw when w_virtcol changes and 'cursorcolumn' is set */ |
| 1186 if (curwin->w_p_cuc && (curwin->w_valid & VALID_VIRTCOL) == 0 | |
| 1187 # ifdef FEAT_INS_EXPAND | |
| 1188 && !pum_visible() | |
| 1189 # endif | |
| 1190 ) | |
| 1191 redraw_later(SOME_VALID); | |
|
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1192 #endif |
| 740 | 1193 |
| 7 | 1194 curwin->w_valid |= VALID_WCOL|VALID_WROW|VALID_VIRTCOL; |
| 1195 } | |
| 1196 | |
| 1197 /* | |
| 1198 * Scroll the current window down by "line_count" logical lines. "CTRL-Y" | |
| 1199 */ | |
| 1200 void | |
|
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changeset
|
1201 scrolldown( |
|
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Christian Brabandt <cb@256bit.org>
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diff
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|
1202 long line_count, |
|
2a8d6b2dd925
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diff
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|
1203 int byfold UNUSED) /* TRUE: count a closed fold as one line */ |
| 7 | 1204 { |
| 1205 long done = 0; /* total # of physical lines done */ | |
| 1206 int wrow; | |
| 1207 int moved = FALSE; | |
| 1208 | |
| 1209 #ifdef FEAT_FOLDING | |
| 1210 linenr_T first; | |
| 1211 | |
| 1212 /* Make sure w_topline is at the first of a sequence of folded lines. */ | |
| 1213 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 1214 #endif | |
| 1215 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1216 while (line_count-- > 0) | |
| 1217 { | |
| 1218 #ifdef FEAT_DIFF | |
| 1980 | 1219 if (curwin->w_topfill < diff_check(curwin, curwin->w_topline) |
| 1220 && curwin->w_topfill < curwin->w_height - 1) | |
| 7 | 1221 { |
| 1222 ++curwin->w_topfill; | |
| 1223 ++done; | |
| 1224 } | |
| 1225 else | |
| 1226 #endif | |
| 1227 { | |
| 1228 if (curwin->w_topline == 1) | |
| 1229 break; | |
| 1230 --curwin->w_topline; | |
| 1231 #ifdef FEAT_DIFF | |
| 1232 curwin->w_topfill = 0; | |
| 1233 #endif | |
| 1234 #ifdef FEAT_FOLDING | |
| 1235 /* A sequence of folded lines only counts for one logical line */ | |
| 1236 if (hasFolding(curwin->w_topline, &first, NULL)) | |
| 1237 { | |
| 1238 ++done; | |
| 1239 if (!byfold) | |
| 1240 line_count -= curwin->w_topline - first - 1; | |
| 1241 curwin->w_botline -= curwin->w_topline - first; | |
| 1242 curwin->w_topline = first; | |
| 1243 } | |
| 1244 else | |
| 1245 #endif | |
|
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|
1246 done += PLINES_NOFILL(curwin->w_topline); |
| 7 | 1247 } |
| 1248 --curwin->w_botline; /* approximate w_botline */ | |
| 1249 invalidate_botline(); | |
| 1250 } | |
| 1251 curwin->w_wrow += done; /* keep w_wrow updated */ | |
| 1252 curwin->w_cline_row += done; /* keep w_cline_row updated */ | |
| 1253 | |
| 1254 #ifdef FEAT_DIFF | |
| 1255 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 1256 curwin->w_cline_row = 0; | |
| 1257 check_topfill(curwin, TRUE); | |
| 1258 #endif | |
| 1259 | |
| 1260 /* | |
| 1261 * Compute the row number of the last row of the cursor line | |
| 1262 * and move the cursor onto the displayed part of the window. | |
| 1263 */ | |
| 1264 wrow = curwin->w_wrow; | |
|
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1265 if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 1266 { |
| 1267 validate_virtcol(); | |
| 1268 validate_cheight(); | |
| 1269 wrow += curwin->w_cline_height - 1 - | |
|
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1270 curwin->w_virtcol / curwin->w_width; |
| 7 | 1271 } |
| 1272 while (wrow >= curwin->w_height && curwin->w_cursor.lnum > 1) | |
| 1273 { | |
| 1274 #ifdef FEAT_FOLDING | |
| 1275 if (hasFolding(curwin->w_cursor.lnum, &first, NULL)) | |
| 1276 { | |
| 1277 --wrow; | |
| 1278 if (first == 1) | |
| 1279 curwin->w_cursor.lnum = 1; | |
| 1280 else | |
| 1281 curwin->w_cursor.lnum = first - 1; | |
| 1282 } | |
| 1283 else | |
| 1284 #endif | |
| 1285 wrow -= plines(curwin->w_cursor.lnum--); | |
| 1286 curwin->w_valid &= | |
| 1287 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
| 1288 moved = TRUE; | |
| 1289 } | |
| 1290 if (moved) | |
| 1291 { | |
| 1292 #ifdef FEAT_FOLDING | |
| 1293 /* Move cursor to first line of closed fold. */ | |
| 1294 foldAdjustCursor(); | |
| 1295 #endif | |
| 1296 coladvance(curwin->w_curswant); | |
| 1297 } | |
| 1298 } | |
| 1299 | |
| 1300 /* | |
| 1301 * Scroll the current window up by "line_count" logical lines. "CTRL-E" | |
| 1302 */ | |
| 1303 void | |
|
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1304 scrollup( |
|
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|
1305 long line_count, |
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2a8d6b2dd925
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|
1306 int byfold UNUSED) /* TRUE: count a closed fold as one line */ |
| 7 | 1307 { |
| 1308 #if defined(FEAT_FOLDING) || defined(FEAT_DIFF) | |
| 1309 linenr_T lnum; | |
| 1310 | |
| 1311 if ( | |
| 1312 # ifdef FEAT_FOLDING | |
| 1313 (byfold && hasAnyFolding(curwin)) | |
| 1314 # ifdef FEAT_DIFF | |
| 1315 || | |
| 1316 # endif | |
| 1317 # endif | |
| 1318 # ifdef FEAT_DIFF | |
| 1319 curwin->w_p_diff | |
| 1320 # endif | |
| 1321 ) | |
| 1322 { | |
| 1323 /* count each sequence of folded lines as one logical line */ | |
| 1324 lnum = curwin->w_topline; | |
| 1325 while (line_count--) | |
| 1326 { | |
| 1327 # ifdef FEAT_DIFF | |
| 1328 if (curwin->w_topfill > 0) | |
| 1329 --curwin->w_topfill; | |
| 1330 else | |
| 1331 # endif | |
| 1332 { | |
| 1333 # ifdef FEAT_FOLDING | |
| 1334 if (byfold) | |
| 1335 (void)hasFolding(lnum, NULL, &lnum); | |
| 1336 # endif | |
| 1337 if (lnum >= curbuf->b_ml.ml_line_count) | |
| 1338 break; | |
| 1339 ++lnum; | |
| 1340 # ifdef FEAT_DIFF | |
| 1341 curwin->w_topfill = diff_check_fill(curwin, lnum); | |
| 1342 # endif | |
| 1343 } | |
| 1344 } | |
| 1345 /* approximate w_botline */ | |
| 1346 curwin->w_botline += lnum - curwin->w_topline; | |
| 1347 curwin->w_topline = lnum; | |
| 1348 } | |
| 1349 else | |
| 1350 #endif | |
| 1351 { | |
| 1352 curwin->w_topline += line_count; | |
| 1353 curwin->w_botline += line_count; /* approximate w_botline */ | |
| 1354 } | |
| 1355 | |
| 1356 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
| 1357 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
| 1358 if (curwin->w_botline > curbuf->b_ml.ml_line_count + 1) | |
| 1359 curwin->w_botline = curbuf->b_ml.ml_line_count + 1; | |
| 1360 | |
| 1361 #ifdef FEAT_DIFF | |
| 1362 check_topfill(curwin, FALSE); | |
| 1363 #endif | |
| 1364 | |
| 1365 #ifdef FEAT_FOLDING | |
| 1366 if (hasAnyFolding(curwin)) | |
| 1367 /* Make sure w_topline is at the first of a sequence of folded lines. */ | |
| 1368 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 1369 #endif | |
| 1370 | |
| 1371 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1372 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 1373 { | |
| 1374 curwin->w_cursor.lnum = curwin->w_topline; | |
| 1375 curwin->w_valid &= | |
| 1376 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
| 1377 coladvance(curwin->w_curswant); | |
| 1378 } | |
| 1379 } | |
| 1380 | |
| 1381 #ifdef FEAT_DIFF | |
| 1382 /* | |
| 1383 * Don't end up with too many filler lines in the window. | |
| 1384 */ | |
| 1385 void | |
|
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1386 check_topfill( |
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|
1387 win_T *wp, |
|
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|
1388 int down) /* when TRUE scroll down when not enough space */ |
| 7 | 1389 { |
| 1390 int n; | |
| 1391 | |
| 1392 if (wp->w_topfill > 0) | |
| 1393 { | |
| 1394 n = plines_win_nofill(wp, wp->w_topline, TRUE); | |
| 1395 if (wp->w_topfill + n > wp->w_height) | |
| 1396 { | |
| 1397 if (down && wp->w_topline > 1) | |
| 1398 { | |
| 1399 --wp->w_topline; | |
| 1400 wp->w_topfill = 0; | |
| 1401 } | |
| 1402 else | |
| 1403 { | |
| 1404 wp->w_topfill = wp->w_height - n; | |
| 1405 if (wp->w_topfill < 0) | |
| 1406 wp->w_topfill = 0; | |
| 1407 } | |
| 1408 } | |
| 1409 } | |
| 1410 } | |
| 1411 | |
| 1412 /* | |
| 1413 * Use as many filler lines as possible for w_topline. Make sure w_topline | |
| 1414 * is still visible. | |
| 1415 */ | |
| 1416 static void | |
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|
1417 max_topfill(void) |
| 7 | 1418 { |
| 1419 int n; | |
| 1420 | |
| 1421 n = plines_nofill(curwin->w_topline); | |
| 1422 if (n >= curwin->w_height) | |
| 1423 curwin->w_topfill = 0; | |
| 1424 else | |
| 1425 { | |
| 1426 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 1427 if (curwin->w_topfill + n > curwin->w_height) | |
| 1428 curwin->w_topfill = curwin->w_height - n; | |
| 1429 } | |
| 1430 } | |
| 1431 #endif | |
| 1432 | |
| 1433 #if defined(FEAT_INS_EXPAND) || defined(PROTO) | |
| 1434 /* | |
| 1435 * Scroll the screen one line down, but don't do it if it would move the | |
| 1436 * cursor off the screen. | |
| 1437 */ | |
| 1438 void | |
|
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1439 scrolldown_clamp(void) |
| 7 | 1440 { |
| 1441 int end_row; | |
| 1442 #ifdef FEAT_DIFF | |
| 1443 int can_fill = (curwin->w_topfill | |
| 1444 < diff_check_fill(curwin, curwin->w_topline)); | |
| 1445 #endif | |
| 1446 | |
| 1447 if (curwin->w_topline <= 1 | |
| 1448 #ifdef FEAT_DIFF | |
| 1449 && !can_fill | |
| 1450 #endif | |
| 1451 ) | |
| 1452 return; | |
| 1453 | |
| 1454 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1455 | |
| 1456 /* | |
| 1457 * Compute the row number of the last row of the cursor line | |
| 1458 * and make sure it doesn't go off the screen. Make sure the cursor | |
| 1459 * doesn't go past 'scrolloff' lines from the screen end. | |
| 1460 */ | |
| 1461 end_row = curwin->w_wrow; | |
| 1462 #ifdef FEAT_DIFF | |
| 1463 if (can_fill) | |
| 1464 ++end_row; | |
| 1465 else | |
| 1466 end_row += plines_nofill(curwin->w_topline - 1); | |
| 1467 #else | |
| 1468 end_row += plines(curwin->w_topline - 1); | |
| 1469 #endif | |
|
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1470 if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 1471 { |
| 1472 validate_cheight(); | |
| 1473 validate_virtcol(); | |
| 1474 end_row += curwin->w_cline_height - 1 - | |
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1475 curwin->w_virtcol / curwin->w_width; |
| 7 | 1476 } |
| 1477 if (end_row < curwin->w_height - p_so) | |
| 1478 { | |
| 1479 #ifdef FEAT_DIFF | |
| 1480 if (can_fill) | |
| 1481 { | |
| 1482 ++curwin->w_topfill; | |
| 1483 check_topfill(curwin, TRUE); | |
| 1484 } | |
| 1485 else | |
| 1486 { | |
| 1487 --curwin->w_topline; | |
| 1488 curwin->w_topfill = 0; | |
| 1489 } | |
| 1490 #else | |
| 1491 --curwin->w_topline; | |
| 1492 #endif | |
| 1493 #ifdef FEAT_FOLDING | |
| 7009 | 1494 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
| 7 | 1495 #endif |
| 1496 --curwin->w_botline; /* approximate w_botline */ | |
| 1497 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1498 } | |
| 1499 } | |
| 1500 | |
| 1501 /* | |
| 1502 * Scroll the screen one line up, but don't do it if it would move the cursor | |
| 1503 * off the screen. | |
| 1504 */ | |
| 1505 void | |
|
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changeset
|
1506 scrollup_clamp(void) |
| 7 | 1507 { |
| 1508 int start_row; | |
| 1509 | |
| 1510 if (curwin->w_topline == curbuf->b_ml.ml_line_count | |
| 1511 #ifdef FEAT_DIFF | |
| 1512 && curwin->w_topfill == 0 | |
| 1513 #endif | |
| 1514 ) | |
| 1515 return; | |
| 1516 | |
| 1517 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1518 | |
| 1519 /* | |
| 1520 * Compute the row number of the first row of the cursor line | |
| 1521 * and make sure it doesn't go off the screen. Make sure the cursor | |
| 1522 * doesn't go before 'scrolloff' lines from the screen start. | |
| 1523 */ | |
| 1524 #ifdef FEAT_DIFF | |
| 1525 start_row = curwin->w_wrow - plines_nofill(curwin->w_topline) | |
| 1526 - curwin->w_topfill; | |
| 1527 #else | |
| 1528 start_row = curwin->w_wrow - plines(curwin->w_topline); | |
| 1529 #endif | |
|
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1530 if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 1531 { |
| 1532 validate_virtcol(); | |
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1533 start_row -= curwin->w_virtcol / curwin->w_width; |
| 7 | 1534 } |
| 1535 if (start_row >= p_so) | |
| 1536 { | |
| 1537 #ifdef FEAT_DIFF | |
| 1538 if (curwin->w_topfill > 0) | |
| 1539 --curwin->w_topfill; | |
| 1540 else | |
| 1541 #endif | |
| 36 | 1542 { |
| 1543 #ifdef FEAT_FOLDING | |
| 1544 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
| 1545 #endif | |
| 7 | 1546 ++curwin->w_topline; |
| 36 | 1547 } |
| 7 | 1548 ++curwin->w_botline; /* approximate w_botline */ |
| 1549 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1550 } | |
| 1551 } | |
| 1552 #endif /* FEAT_INS_EXPAND */ | |
| 1553 | |
| 1554 /* | |
| 1555 * Add one line above "lp->lnum". This can be a filler line, a closed fold or | |
| 1556 * a (wrapped) text line. Uses and sets "lp->fill". | |
| 1557 * Returns the height of the added line in "lp->height". | |
|
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1558 * Lines above the first one are incredibly high: MAXCOL. |
| 7 | 1559 */ |
| 1560 static void | |
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1561 topline_back(lineoff_T *lp) |
| 7 | 1562 { |
| 1563 #ifdef FEAT_DIFF | |
| 1564 if (lp->fill < diff_check_fill(curwin, lp->lnum)) | |
| 1565 { | |
| 1566 /* Add a filler line. */ | |
| 1567 ++lp->fill; | |
| 1568 lp->height = 1; | |
| 1569 } | |
| 1570 else | |
| 1571 #endif | |
| 1572 { | |
| 1573 --lp->lnum; | |
| 1574 #ifdef FEAT_DIFF | |
| 1575 lp->fill = 0; | |
| 1576 #endif | |
| 1577 if (lp->lnum < 1) | |
| 1578 lp->height = MAXCOL; | |
| 1579 else | |
| 1580 #ifdef FEAT_FOLDING | |
| 1581 if (hasFolding(lp->lnum, &lp->lnum, NULL)) | |
| 1582 /* Add a closed fold */ | |
| 1583 lp->height = 1; | |
| 1584 else | |
| 1585 #endif | |
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1586 lp->height = PLINES_NOFILL(lp->lnum); |
| 7 | 1587 } |
| 1588 } | |
| 1589 | |
| 1590 /* | |
| 1591 * Add one line below "lp->lnum". This can be a filler line, a closed fold or | |
| 1592 * a (wrapped) text line. Uses and sets "lp->fill". | |
| 1593 * Returns the height of the added line in "lp->height". | |
| 1594 * Lines below the last one are incredibly high. | |
| 1595 */ | |
| 1596 static void | |
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1597 botline_forw(lineoff_T *lp) |
| 7 | 1598 { |
| 1599 #ifdef FEAT_DIFF | |
| 1600 if (lp->fill < diff_check_fill(curwin, lp->lnum + 1)) | |
| 1601 { | |
| 1602 /* Add a filler line. */ | |
| 1603 ++lp->fill; | |
| 1604 lp->height = 1; | |
| 1605 } | |
| 1606 else | |
| 1607 #endif | |
| 1608 { | |
| 1609 ++lp->lnum; | |
| 1610 #ifdef FEAT_DIFF | |
| 1611 lp->fill = 0; | |
| 1612 #endif | |
| 1613 if (lp->lnum > curbuf->b_ml.ml_line_count) | |
| 1614 lp->height = MAXCOL; | |
| 1615 else | |
| 1616 #ifdef FEAT_FOLDING | |
| 1617 if (hasFolding(lp->lnum, NULL, &lp->lnum)) | |
| 1618 /* Add a closed fold */ | |
| 1619 lp->height = 1; | |
| 1620 else | |
| 1621 #endif | |
| 1622 { | |
|
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|
1623 lp->height = PLINES_NOFILL(lp->lnum); |
| 7 | 1624 } |
| 1625 } | |
| 1626 } | |
| 1627 | |
| 1628 #ifdef FEAT_DIFF | |
| 1629 /* | |
| 1630 * Switch from including filler lines below lp->lnum to including filler | |
| 1631 * lines above loff.lnum + 1. This keeps pointing to the same line. | |
| 1632 * When there are no filler lines nothing changes. | |
| 1633 */ | |
| 1634 static void | |
|
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1635 botline_topline(lineoff_T *lp) |
| 7 | 1636 { |
| 1637 if (lp->fill > 0) | |
| 1638 { | |
| 1639 ++lp->lnum; | |
| 1640 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
| 1641 } | |
| 1642 } | |
| 1643 | |
| 1644 /* | |
| 1645 * Switch from including filler lines above lp->lnum to including filler | |
| 1646 * lines below loff.lnum - 1. This keeps pointing to the same line. | |
| 1647 * When there are no filler lines nothing changes. | |
| 1648 */ | |
| 1649 static void | |
|
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1650 topline_botline(lineoff_T *lp) |
| 7 | 1651 { |
| 1652 if (lp->fill > 0) | |
| 1653 { | |
| 1654 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
| 1655 --lp->lnum; | |
| 1656 } | |
| 1657 } | |
| 1658 #endif | |
| 1659 | |
| 1660 /* | |
| 1661 * Recompute topline to put the cursor at the top of the window. | |
| 1662 * Scroll at least "min_scroll" lines. | |
| 1663 * If "always" is TRUE, always set topline (for "zt"). | |
| 1664 */ | |
| 1665 void | |
|
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1666 scroll_cursor_top(int min_scroll, int always) |
| 7 | 1667 { |
| 1668 int scrolled = 0; | |
| 1669 int extra = 0; | |
| 1670 int used; | |
| 1671 int i; | |
| 1672 linenr_T top; /* just above displayed lines */ | |
| 1673 linenr_T bot; /* just below displayed lines */ | |
| 1674 linenr_T old_topline = curwin->w_topline; | |
| 1675 #ifdef FEAT_DIFF | |
| 1676 linenr_T old_topfill = curwin->w_topfill; | |
| 1677 #endif | |
| 1678 linenr_T new_topline; | |
| 1679 int off = p_so; | |
| 1680 | |
| 1681 #ifdef FEAT_MOUSE | |
| 1682 if (mouse_dragging > 0) | |
| 1683 off = mouse_dragging - 1; | |
| 1684 #endif | |
| 1685 | |
| 1686 /* | |
| 1687 * Decrease topline until: | |
| 1688 * - it has become 1 | |
| 1689 * - (part of) the cursor line is moved off the screen or | |
| 1690 * - moved at least 'scrolljump' lines and | |
| 1691 * - at least 'scrolloff' lines above and below the cursor | |
| 1692 */ | |
| 1693 validate_cheight(); | |
|
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1694 used = curwin->w_cline_height; /* includes filler lines above */ |
| 7 | 1695 if (curwin->w_cursor.lnum < curwin->w_topline) |
| 1696 scrolled = used; | |
| 1697 | |
| 1698 #ifdef FEAT_FOLDING | |
| 1699 if (hasFolding(curwin->w_cursor.lnum, &top, &bot)) | |
| 1700 { | |
| 1701 --top; | |
| 1702 ++bot; | |
| 1703 } | |
| 1704 else | |
| 1705 #endif | |
| 1706 { | |
| 1707 top = curwin->w_cursor.lnum - 1; | |
| 1708 bot = curwin->w_cursor.lnum + 1; | |
| 1709 } | |
| 1710 new_topline = top + 1; | |
| 1711 | |
| 1712 #ifdef FEAT_DIFF | |
|
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1713 /* "used" already contains the number of filler lines above, don't add it |
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1714 * again. |
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1715 * Hide filler lines above cursor line by adding them to "extra". */ |
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1716 extra += diff_check_fill(curwin, curwin->w_cursor.lnum); |
| 7 | 1717 #endif |
| 1718 | |
| 1719 /* | |
| 1720 * Check if the lines from "top" to "bot" fit in the window. If they do, | |
| 1721 * set new_topline and advance "top" and "bot" to include more lines. | |
| 1722 */ | |
| 1723 while (top > 0) | |
| 1724 { | |
| 1725 #ifdef FEAT_FOLDING | |
| 1726 if (hasFolding(top, &top, NULL)) | |
| 1727 /* count one logical line for a sequence of folded lines */ | |
| 1728 i = 1; | |
| 1729 else | |
| 1730 #endif | |
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|
1731 i = PLINES_NOFILL(top); |
| 7 | 1732 used += i; |
| 1733 if (extra + i <= off && bot < curbuf->b_ml.ml_line_count) | |
| 1734 { | |
| 1735 #ifdef FEAT_FOLDING | |
| 1736 if (hasFolding(bot, NULL, &bot)) | |
| 1737 /* count one logical line for a sequence of folded lines */ | |
| 1738 ++used; | |
| 1739 else | |
| 1740 #endif | |
| 1741 used += plines(bot); | |
| 1742 } | |
| 1743 if (used > curwin->w_height) | |
| 1744 break; | |
| 1745 if (top < curwin->w_topline) | |
| 1746 scrolled += i; | |
| 1747 | |
| 1748 /* | |
| 1749 * If scrolling is needed, scroll at least 'sj' lines. | |
| 1750 */ | |
| 1751 if ((new_topline >= curwin->w_topline || scrolled > min_scroll) | |
| 1752 && extra >= off) | |
| 1753 break; | |
| 1754 | |
| 1755 extra += i; | |
| 1756 new_topline = top; | |
| 1757 --top; | |
| 1758 ++bot; | |
| 1759 } | |
| 1760 | |
| 1761 /* | |
| 1762 * If we don't have enough space, put cursor in the middle. | |
| 1763 * This makes sure we get the same position when using "k" and "j" | |
| 1764 * in a small window. | |
| 1765 */ | |
| 1766 if (used > curwin->w_height) | |
| 1767 scroll_cursor_halfway(FALSE); | |
| 1768 else | |
| 1769 { | |
| 1770 /* | |
| 1771 * If "always" is FALSE, only adjust topline to a lower value, higher | |
| 1772 * value may happen with wrapping lines | |
| 1773 */ | |
| 1774 if (new_topline < curwin->w_topline || always) | |
| 1775 curwin->w_topline = new_topline; | |
| 1776 if (curwin->w_topline > curwin->w_cursor.lnum) | |
| 1777 curwin->w_topline = curwin->w_cursor.lnum; | |
| 1778 #ifdef FEAT_DIFF | |
| 1779 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 1780 if (curwin->w_topfill > 0 && extra > off) | |
| 1781 { | |
| 1782 curwin->w_topfill -= extra - off; | |
| 1783 if (curwin->w_topfill < 0) | |
| 1784 curwin->w_topfill = 0; | |
| 1785 } | |
| 1786 check_topfill(curwin, FALSE); | |
| 1787 #endif | |
| 1788 if (curwin->w_topline != old_topline | |
| 1789 #ifdef FEAT_DIFF | |
| 1790 || curwin->w_topfill != old_topfill | |
| 1791 #endif | |
| 1792 ) | |
| 1793 curwin->w_valid &= | |
| 1794 ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 1795 curwin->w_valid |= VALID_TOPLINE; | |
| 1796 } | |
| 1797 } | |
| 1798 | |
| 1799 /* | |
| 1800 * Set w_empty_rows and w_filler_rows for window "wp", having used up "used" | |
| 1801 * screen lines for text lines. | |
| 1802 */ | |
| 1803 void | |
|
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1804 set_empty_rows(win_T *wp, int used) |
| 7 | 1805 { |
| 1806 #ifdef FEAT_DIFF | |
| 1807 wp->w_filler_rows = 0; | |
| 1808 #endif | |
| 1809 if (used == 0) | |
| 1810 wp->w_empty_rows = 0; /* single line that doesn't fit */ | |
| 1811 else | |
| 1812 { | |
| 1813 wp->w_empty_rows = wp->w_height - used; | |
| 1814 #ifdef FEAT_DIFF | |
| 1815 if (wp->w_botline <= wp->w_buffer->b_ml.ml_line_count) | |
| 1816 { | |
| 1817 wp->w_filler_rows = diff_check_fill(wp, wp->w_botline); | |
| 1818 if (wp->w_empty_rows > wp->w_filler_rows) | |
| 1819 wp->w_empty_rows -= wp->w_filler_rows; | |
| 1820 else | |
| 1821 { | |
| 1822 wp->w_filler_rows = wp->w_empty_rows; | |
| 1823 wp->w_empty_rows = 0; | |
| 1824 } | |
| 1825 } | |
| 1826 #endif | |
| 1827 } | |
| 1828 } | |
| 1829 | |
| 1830 /* | |
| 1831 * Recompute topline to put the cursor at the bottom of the window. | |
| 1832 * Scroll at least "min_scroll" lines. | |
| 1833 * If "set_topbot" is TRUE, set topline and botline first (for "zb"). | |
| 1834 * This is messy stuff!!! | |
| 1835 */ | |
| 1836 void | |
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1837 scroll_cursor_bot(int min_scroll, int set_topbot) |
| 7 | 1838 { |
| 1839 int used; | |
| 1840 int scrolled = 0; | |
| 1841 int extra = 0; | |
| 1842 int i; | |
| 1843 linenr_T line_count; | |
| 1844 linenr_T old_topline = curwin->w_topline; | |
| 1845 lineoff_T loff; | |
| 1846 lineoff_T boff; | |
| 1847 #ifdef FEAT_DIFF | |
| 1848 int old_topfill = curwin->w_topfill; | |
| 1849 int fill_below_window; | |
| 1850 #endif | |
| 1851 linenr_T old_botline = curwin->w_botline; | |
| 1852 linenr_T old_valid = curwin->w_valid; | |
| 1853 int old_empty_rows = curwin->w_empty_rows; | |
| 1854 linenr_T cln; /* Cursor Line Number */ | |
| 1855 | |
| 1856 cln = curwin->w_cursor.lnum; | |
| 1857 if (set_topbot) | |
| 1858 { | |
| 1859 used = 0; | |
| 1860 curwin->w_botline = cln + 1; | |
| 1861 #ifdef FEAT_DIFF | |
| 1862 loff.fill = 0; | |
| 1863 #endif | |
| 1864 for (curwin->w_topline = curwin->w_botline; | |
| 1865 curwin->w_topline > 1; | |
| 1866 curwin->w_topline = loff.lnum) | |
| 1867 { | |
| 1868 loff.lnum = curwin->w_topline; | |
| 1869 topline_back(&loff); | |
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1870 if (loff.height == MAXCOL || used + loff.height > curwin->w_height) |
| 7 | 1871 break; |
| 1872 used += loff.height; | |
| 1873 #ifdef FEAT_DIFF | |
| 1874 curwin->w_topfill = loff.fill; | |
| 1875 #endif | |
| 1876 } | |
| 1877 set_empty_rows(curwin, used); | |
| 1878 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 1879 if (curwin->w_topline != old_topline | |
| 1880 #ifdef FEAT_DIFF | |
| 1881 || curwin->w_topfill != old_topfill | |
| 1882 #endif | |
| 1883 ) | |
| 1884 curwin->w_valid &= ~(VALID_WROW|VALID_CROW); | |
| 1885 } | |
| 1886 else | |
| 1887 validate_botline(); | |
| 1888 | |
| 1889 /* The lines of the cursor line itself are always used. */ | |
| 1890 #ifdef FEAT_DIFF | |
| 1891 used = plines_nofill(cln); | |
| 1892 #else | |
| 1893 validate_cheight(); | |
| 1894 used = curwin->w_cline_height; | |
| 1895 #endif | |
| 1896 | |
| 1897 /* If the cursor is below botline, we will at least scroll by the height | |
| 1898 * of the cursor line. Correct for empty lines, which are really part of | |
| 1899 * botline. */ | |
| 1900 if (cln >= curwin->w_botline) | |
| 1901 { | |
| 1902 scrolled = used; | |
| 1903 if (cln == curwin->w_botline) | |
| 1904 scrolled -= curwin->w_empty_rows; | |
| 1905 } | |
| 1906 | |
| 1907 /* | |
| 1908 * Stop counting lines to scroll when | |
| 1909 * - hitting start of the file | |
| 1910 * - scrolled nothing or at least 'sj' lines | |
| 1911 * - at least 'so' lines below the cursor | |
| 1912 * - lines between botline and cursor have been counted | |
| 1913 */ | |
| 1914 #ifdef FEAT_FOLDING | |
| 1915 if (!hasFolding(curwin->w_cursor.lnum, &loff.lnum, &boff.lnum)) | |
| 1916 #endif | |
| 1917 { | |
| 1918 loff.lnum = cln; | |
| 1919 boff.lnum = cln; | |
| 1920 } | |
| 1921 #ifdef FEAT_DIFF | |
| 1922 loff.fill = 0; | |
| 1923 boff.fill = 0; | |
| 1924 fill_below_window = diff_check_fill(curwin, curwin->w_botline) | |
| 1925 - curwin->w_filler_rows; | |
| 1926 #endif | |
| 1927 | |
| 1928 while (loff.lnum > 1) | |
| 1929 { | |
| 1930 /* Stop when scrolled nothing or at least "min_scroll", found "extra" | |
| 1931 * context for 'scrolloff' and counted all lines below the window. */ | |
| 1932 if ((((scrolled <= 0 || scrolled >= min_scroll) | |
| 1933 && extra >= ( | |
| 1934 #ifdef FEAT_MOUSE | |
| 1121 | 1935 mouse_dragging > 0 ? mouse_dragging - 1 : |
| 7 | 1936 #endif |
| 1937 p_so)) | |
| 1938 || boff.lnum + 1 > curbuf->b_ml.ml_line_count) | |
| 1939 && loff.lnum <= curwin->w_botline | |
| 1940 #ifdef FEAT_DIFF | |
| 1941 && (loff.lnum < curwin->w_botline | |
| 1942 || loff.fill >= fill_below_window) | |
| 1943 #endif | |
| 1944 ) | |
| 1945 break; | |
| 1946 | |
| 1947 /* Add one line above */ | |
| 1948 topline_back(&loff); | |
|
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1949 if (loff.height == MAXCOL) |
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1950 used = MAXCOL; |
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1951 else |
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1952 used += loff.height; |
| 7 | 1953 if (used > curwin->w_height) |
| 1954 break; | |
| 1955 if (loff.lnum >= curwin->w_botline | |
| 1956 #ifdef FEAT_DIFF | |
| 1957 && (loff.lnum > curwin->w_botline | |
| 1958 || loff.fill <= fill_below_window) | |
| 1959 #endif | |
| 1960 ) | |
| 1961 { | |
| 1962 /* Count screen lines that are below the window. */ | |
| 1963 scrolled += loff.height; | |
| 1964 if (loff.lnum == curwin->w_botline | |
| 1965 #ifdef FEAT_DIFF | |
| 1966 && boff.fill == 0 | |
| 1967 #endif | |
| 1968 ) | |
| 1969 scrolled -= curwin->w_empty_rows; | |
| 1970 } | |
| 1971 | |
| 1972 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
| 1973 { | |
| 1974 /* Add one line below */ | |
| 1975 botline_forw(&boff); | |
| 1976 used += boff.height; | |
| 1977 if (used > curwin->w_height) | |
| 1978 break; | |
| 1979 if (extra < ( | |
| 1980 #ifdef FEAT_MOUSE | |
| 1981 mouse_dragging > 0 ? mouse_dragging - 1 : | |
| 1982 #endif | |
| 1983 p_so) || scrolled < min_scroll) | |
| 1984 { | |
| 1985 extra += boff.height; | |
| 1986 if (boff.lnum >= curwin->w_botline | |
| 1987 #ifdef FEAT_DIFF | |
| 1988 || (boff.lnum + 1 == curwin->w_botline | |
| 1989 && boff.fill > curwin->w_filler_rows) | |
| 1990 #endif | |
| 1991 ) | |
| 1992 { | |
| 1993 /* Count screen lines that are below the window. */ | |
| 1994 scrolled += boff.height; | |
| 1995 if (boff.lnum == curwin->w_botline | |
| 1996 #ifdef FEAT_DIFF | |
| 1997 && boff.fill == 0 | |
| 1998 #endif | |
| 1999 ) | |
| 2000 scrolled -= curwin->w_empty_rows; | |
| 2001 } | |
| 2002 } | |
| 2003 } | |
| 2004 } | |
| 2005 | |
| 2006 /* curwin->w_empty_rows is larger, no need to scroll */ | |
| 2007 if (scrolled <= 0) | |
| 2008 line_count = 0; | |
| 2009 /* more than a screenfull, don't scroll but redraw */ | |
| 2010 else if (used > curwin->w_height) | |
| 2011 line_count = used; | |
| 2012 /* scroll minimal number of lines */ | |
| 2013 else | |
| 2014 { | |
| 2015 line_count = 0; | |
| 2016 #ifdef FEAT_DIFF | |
| 2017 boff.fill = curwin->w_topfill; | |
| 2018 #endif | |
| 2019 boff.lnum = curwin->w_topline - 1; | |
| 2020 for (i = 0; i < scrolled && boff.lnum < curwin->w_botline; ) | |
| 2021 { | |
| 2022 botline_forw(&boff); | |
| 2023 i += boff.height; | |
| 2024 ++line_count; | |
| 2025 } | |
| 2026 if (i < scrolled) /* below curwin->w_botline, don't scroll */ | |
| 2027 line_count = 9999; | |
| 2028 } | |
| 2029 | |
| 2030 /* | |
| 2031 * Scroll up if the cursor is off the bottom of the screen a bit. | |
| 2032 * Otherwise put it at 1/2 of the screen. | |
| 2033 */ | |
| 2034 if (line_count >= curwin->w_height && line_count > min_scroll) | |
| 2035 scroll_cursor_halfway(FALSE); | |
| 2036 else | |
| 2037 scrollup(line_count, TRUE); | |
| 2038 | |
| 2039 /* | |
| 2040 * If topline didn't change we need to restore w_botline and w_empty_rows | |
| 2041 * (we changed them). | |
| 2042 * If topline did change, update_screen() will set botline. | |
| 2043 */ | |
| 2044 if (curwin->w_topline == old_topline && set_topbot) | |
| 2045 { | |
| 2046 curwin->w_botline = old_botline; | |
| 2047 curwin->w_empty_rows = old_empty_rows; | |
| 2048 curwin->w_valid = old_valid; | |
| 2049 } | |
| 2050 curwin->w_valid |= VALID_TOPLINE; | |
| 2051 } | |
| 2052 | |
| 2053 /* | |
| 2054 * Recompute topline to put the cursor halfway the window | |
| 2055 * If "atend" is TRUE, also put it halfway at the end of the file. | |
| 2056 */ | |
| 2057 void | |
|
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diff
changeset
|
2058 scroll_cursor_halfway(int atend) |
| 7 | 2059 { |
| 2060 int above = 0; | |
| 2061 linenr_T topline; | |
| 2062 #ifdef FEAT_DIFF | |
| 2063 int topfill = 0; | |
| 2064 #endif | |
| 2065 int below = 0; | |
| 2066 int used; | |
| 2067 lineoff_T loff; | |
| 2068 lineoff_T boff; | |
| 5661 | 2069 #ifdef FEAT_DIFF |
| 5653 | 2070 linenr_T old_topline = curwin->w_topline; |
| 5661 | 2071 #endif |
| 7 | 2072 |
| 2073 loff.lnum = boff.lnum = curwin->w_cursor.lnum; | |
| 2074 #ifdef FEAT_FOLDING | |
| 2075 (void)hasFolding(loff.lnum, &loff.lnum, &boff.lnum); | |
| 2076 #endif | |
| 2077 #ifdef FEAT_DIFF | |
| 2078 used = plines_nofill(loff.lnum); | |
| 2079 loff.fill = 0; | |
| 2080 boff.fill = 0; | |
| 2081 #else | |
| 2082 used = plines(loff.lnum); | |
| 2083 #endif | |
| 2084 topline = loff.lnum; | |
| 2085 while (topline > 1) | |
| 2086 { | |
| 2087 if (below <= above) /* add a line below the cursor first */ | |
| 2088 { | |
| 2089 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
| 2090 { | |
| 2091 botline_forw(&boff); | |
| 2092 used += boff.height; | |
| 2093 if (used > curwin->w_height) | |
| 2094 break; | |
| 2095 below += boff.height; | |
| 2096 } | |
| 2097 else | |
| 2098 { | |
| 2099 ++below; /* count a "~" line */ | |
| 2100 if (atend) | |
| 2101 ++used; | |
| 2102 } | |
| 2103 } | |
| 2104 | |
| 2105 if (below > above) /* add a line above the cursor */ | |
| 2106 { | |
| 2107 topline_back(&loff); | |
|
2082
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2108 if (loff.height == MAXCOL) |
|
8ca3c9ad0bee
updated for version 7.2.366
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parents:
2070
diff
changeset
|
2109 used = MAXCOL; |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2110 else |
|
8ca3c9ad0bee
updated for version 7.2.366
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parents:
2070
diff
changeset
|
2111 used += loff.height; |
| 7 | 2112 if (used > curwin->w_height) |
| 2113 break; | |
| 2114 above += loff.height; | |
| 2115 topline = loff.lnum; | |
| 2116 #ifdef FEAT_DIFF | |
| 2117 topfill = loff.fill; | |
| 2118 #endif | |
| 2119 } | |
| 2120 } | |
| 2121 #ifdef FEAT_FOLDING | |
| 2122 if (!hasFolding(topline, &curwin->w_topline, NULL)) | |
| 2123 #endif | |
| 2124 curwin->w_topline = topline; | |
| 2125 #ifdef FEAT_DIFF | |
| 2126 curwin->w_topfill = topfill; | |
| 5653 | 2127 if (old_topline > curwin->w_topline + curwin->w_height) |
| 2128 curwin->w_botfill = FALSE; | |
| 7 | 2129 check_topfill(curwin, FALSE); |
| 2130 #endif | |
| 2131 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2132 curwin->w_valid |= VALID_TOPLINE; | |
| 2133 } | |
| 2134 | |
| 2135 /* | |
| 2136 * Correct the cursor position so that it is in a part of the screen at least | |
| 2137 * 'so' lines from the top and bottom, if possible. | |
| 2138 * If not possible, put it at the same position as scroll_cursor_halfway(). | |
| 2139 * When called topline must be valid! | |
| 2140 */ | |
| 2141 void | |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2142 cursor_correct(void) |
| 7 | 2143 { |
| 2144 int above = 0; /* screen lines above topline */ | |
| 2145 linenr_T topline; | |
| 2146 int below = 0; /* screen lines below botline */ | |
| 2147 linenr_T botline; | |
| 2148 int above_wanted, below_wanted; | |
| 2149 linenr_T cln; /* Cursor Line Number */ | |
| 2150 int max_off; | |
| 2151 | |
| 2152 /* | |
| 2153 * How many lines we would like to have above/below the cursor depends on | |
| 2154 * whether the first/last line of the file is on screen. | |
| 2155 */ | |
| 2156 above_wanted = p_so; | |
| 2157 below_wanted = p_so; | |
| 2158 #ifdef FEAT_MOUSE | |
| 1121 | 2159 if (mouse_dragging > 0) |
| 7 | 2160 { |
| 2161 above_wanted = mouse_dragging - 1; | |
| 2162 below_wanted = mouse_dragging - 1; | |
| 2163 } | |
| 2164 #endif | |
| 2165 if (curwin->w_topline == 1) | |
| 2166 { | |
| 2167 above_wanted = 0; | |
| 2168 max_off = curwin->w_height / 2; | |
| 2169 if (below_wanted > max_off) | |
| 2170 below_wanted = max_off; | |
| 2171 } | |
| 2172 validate_botline(); | |
| 2173 if (curwin->w_botline == curbuf->b_ml.ml_line_count + 1 | |
| 2174 #ifdef FEAT_MOUSE | |
| 1121 | 2175 && mouse_dragging == 0 |
| 7 | 2176 #endif |
| 2177 ) | |
| 2178 { | |
| 2179 below_wanted = 0; | |
| 2180 max_off = (curwin->w_height - 1) / 2; | |
| 2181 if (above_wanted > max_off) | |
| 2182 above_wanted = max_off; | |
| 2183 } | |
| 2184 | |
| 2185 /* | |
| 2186 * If there are sufficient file-lines above and below the cursor, we can | |
| 2187 * return now. | |
| 2188 */ | |
| 2189 cln = curwin->w_cursor.lnum; | |
| 2190 if (cln >= curwin->w_topline + above_wanted | |
| 2191 && cln < curwin->w_botline - below_wanted | |
| 2192 #ifdef FEAT_FOLDING | |
| 2193 && !hasAnyFolding(curwin) | |
| 2194 #endif | |
| 2195 ) | |
| 2196 return; | |
| 2197 | |
| 2198 /* | |
| 2199 * Narrow down the area where the cursor can be put by taking lines from | |
| 2200 * the top and the bottom until: | |
| 2201 * - the desired context lines are found | |
| 2202 * - the lines from the top is past the lines from the bottom | |
| 2203 */ | |
| 2204 topline = curwin->w_topline; | |
| 2205 botline = curwin->w_botline - 1; | |
| 2206 #ifdef FEAT_DIFF | |
| 2207 /* count filler lines as context */ | |
| 2208 above = curwin->w_topfill; | |
| 2209 below = curwin->w_filler_rows; | |
| 2210 #endif | |
| 2211 while ((above < above_wanted || below < below_wanted) && topline < botline) | |
| 2212 { | |
| 2213 if (below < below_wanted && (below <= above || above >= above_wanted)) | |
| 2214 { | |
| 2215 #ifdef FEAT_FOLDING | |
| 2216 if (hasFolding(botline, &botline, NULL)) | |
| 2217 ++below; | |
| 2218 else | |
| 2219 #endif | |
| 2220 below += plines(botline); | |
| 2221 --botline; | |
| 2222 } | |
| 2223 if (above < above_wanted && (above < below || below >= below_wanted)) | |
| 2224 { | |
| 2225 #ifdef FEAT_FOLDING | |
| 2226 if (hasFolding(topline, NULL, &topline)) | |
| 2227 ++above; | |
| 2228 else | |
| 2229 #endif | |
|
7103
84d318257a45
commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2230 above += PLINES_NOFILL(topline); |
|
84d318257a45
commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2231 #ifdef FEAT_DIFF |
| 7 | 2232 /* Count filler lines below this line as context. */ |
| 2233 if (topline < botline) | |
| 2234 above += diff_check_fill(curwin, topline + 1); | |
| 2235 #endif | |
| 2236 ++topline; | |
| 2237 } | |
| 2238 } | |
| 2239 if (topline == botline || botline == 0) | |
| 2240 curwin->w_cursor.lnum = topline; | |
| 2241 else if (topline > botline) | |
| 2242 curwin->w_cursor.lnum = botline; | |
| 2243 else | |
| 2244 { | |
| 2245 if (cln < topline && curwin->w_topline > 1) | |
| 2246 { | |
| 2247 curwin->w_cursor.lnum = topline; | |
| 2248 curwin->w_valid &= | |
| 2249 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
| 2250 } | |
| 2251 if (cln > botline && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 2252 { | |
| 2253 curwin->w_cursor.lnum = botline; | |
| 2254 curwin->w_valid &= | |
| 2255 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
| 2256 } | |
| 2257 } | |
| 2258 curwin->w_valid |= VALID_TOPLINE; | |
| 2259 } | |
| 2260 | |
|
7803
37c929c4a073
commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
Christian Brabandt <cb@256bit.org>
parents:
7103
diff
changeset
|
2261 static void get_scroll_overlap(lineoff_T *lp, int dir); |
| 7 | 2262 |
| 2263 /* | |
| 2264 * move screen 'count' pages up or down and update screen | |
| 2265 * | |
| 2266 * return FAIL for failure, OK otherwise | |
| 2267 */ | |
| 2268 int | |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2269 onepage(int dir, long count) |
| 7 | 2270 { |
| 2271 long n; | |
| 2272 int retval = OK; | |
| 2273 lineoff_T loff; | |
| 2274 linenr_T old_topline = curwin->w_topline; | |
| 2275 | |
| 2276 if (curbuf->b_ml.ml_line_count == 1) /* nothing to do */ | |
| 2277 { | |
| 2278 beep_flush(); | |
| 2279 return FAIL; | |
| 2280 } | |
| 2281 | |
| 2282 for ( ; count > 0; --count) | |
| 2283 { | |
| 2284 validate_botline(); | |
| 2285 /* | |
| 2286 * It's an error to move a page up when the first line is already on | |
| 2287 * the screen. It's an error to move a page down when the last line | |
| 2288 * is on the screen and the topline is 'scrolloff' lines from the | |
| 2289 * last line. | |
| 2290 */ | |
| 2291 if (dir == FORWARD | |
| 2292 ? ((curwin->w_topline >= curbuf->b_ml.ml_line_count - p_so) | |
| 2293 && curwin->w_botline > curbuf->b_ml.ml_line_count) | |
| 2294 : (curwin->w_topline == 1 | |
| 2295 #ifdef FEAT_DIFF | |
| 2296 && curwin->w_topfill == | |
| 2297 diff_check_fill(curwin, curwin->w_topline) | |
| 2298 #endif | |
| 2299 )) | |
| 2300 { | |
| 2301 beep_flush(); | |
| 2302 retval = FAIL; | |
| 2303 break; | |
| 2304 } | |
| 2305 | |
| 2306 #ifdef FEAT_DIFF | |
| 2307 loff.fill = 0; | |
| 2308 #endif | |
| 2309 if (dir == FORWARD) | |
| 2310 { | |
|
10349
cf988222b150
commit https://github.com/vim/vim/commit/a1f4cb93ba50ea9e40cd4b1f5592b8a6d1398660
Christian Brabandt <cb@256bit.org>
parents:
10295
diff
changeset
|
2311 if (ONE_WINDOW && p_window > 0 && p_window < Rows - 1) |
| 7 | 2312 { |
| 164 | 2313 /* Vi compatible scrolling */ |
| 2314 if (p_window <= 2) | |
| 2315 ++curwin->w_topline; | |
| 2316 else | |
| 2317 curwin->w_topline += p_window - 2; | |
| 2318 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
| 2319 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
| 2320 curwin->w_cursor.lnum = curwin->w_topline; | |
| 2321 } | |
| 2322 else if (curwin->w_botline > curbuf->b_ml.ml_line_count) | |
| 2323 { | |
| 2324 /* at end of file */ | |
| 7 | 2325 curwin->w_topline = curbuf->b_ml.ml_line_count; |
| 2326 #ifdef FEAT_DIFF | |
| 2327 curwin->w_topfill = 0; | |
| 2328 #endif | |
| 2329 curwin->w_valid &= ~(VALID_WROW|VALID_CROW); | |
| 2330 } | |
| 2331 else | |
| 2332 { | |
| 2333 /* For the overlap, start with the line just below the window | |
| 2334 * and go upwards. */ | |
| 2335 loff.lnum = curwin->w_botline; | |
| 2336 #ifdef FEAT_DIFF | |
| 2337 loff.fill = diff_check_fill(curwin, loff.lnum) | |
| 2338 - curwin->w_filler_rows; | |
| 2339 #endif | |
| 2340 get_scroll_overlap(&loff, -1); | |
| 2341 curwin->w_topline = loff.lnum; | |
| 2342 #ifdef FEAT_DIFF | |
| 2343 curwin->w_topfill = loff.fill; | |
| 2344 check_topfill(curwin, FALSE); | |
| 2345 #endif | |
| 2346 curwin->w_cursor.lnum = curwin->w_topline; | |
| 2347 curwin->w_valid &= ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW| | |
| 2348 VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2349 } | |
| 2350 } | |
| 2351 else /* dir == BACKWARDS */ | |
| 2352 { | |
| 2353 #ifdef FEAT_DIFF | |
| 2354 if (curwin->w_topline == 1) | |
| 2355 { | |
| 2356 /* Include max number of filler lines */ | |
| 2357 max_topfill(); | |
| 2358 continue; | |
| 2359 } | |
| 2360 #endif | |
|
10349
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commit https://github.com/vim/vim/commit/a1f4cb93ba50ea9e40cd4b1f5592b8a6d1398660
Christian Brabandt <cb@256bit.org>
parents:
10295
diff
changeset
|
2361 if (ONE_WINDOW && p_window > 0 && p_window < Rows - 1) |
| 164 | 2362 { |
| 2363 /* Vi compatible scrolling (sort of) */ | |
| 2364 if (p_window <= 2) | |
| 2365 --curwin->w_topline; | |
| 2366 else | |
| 2367 curwin->w_topline -= p_window - 2; | |
| 2368 if (curwin->w_topline < 1) | |
| 2369 curwin->w_topline = 1; | |
| 2370 curwin->w_cursor.lnum = curwin->w_topline + p_window - 1; | |
| 2371 if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count) | |
| 2372 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; | |
| 2373 continue; | |
| 2374 } | |
| 2375 | |
| 7 | 2376 /* Find the line at the top of the window that is going to be the |
| 2377 * line at the bottom of the window. Make sure this results in | |
| 2378 * the same line as before doing CTRL-F. */ | |
| 2379 loff.lnum = curwin->w_topline - 1; | |
| 2380 #ifdef FEAT_DIFF | |
| 2381 loff.fill = diff_check_fill(curwin, loff.lnum + 1) | |
| 2382 - curwin->w_topfill; | |
| 2383 #endif | |
| 2384 get_scroll_overlap(&loff, 1); | |
| 2385 | |
| 2386 if (loff.lnum >= curbuf->b_ml.ml_line_count) | |
| 2387 { | |
| 2388 loff.lnum = curbuf->b_ml.ml_line_count; | |
| 2389 #ifdef FEAT_DIFF | |
| 2390 loff.fill = 0; | |
| 2391 } | |
| 2392 else | |
| 2393 { | |
| 2394 botline_topline(&loff); | |
| 2395 #endif | |
| 2396 } | |
| 2397 curwin->w_cursor.lnum = loff.lnum; | |
| 2398 | |
| 2399 /* Find the line just above the new topline to get the right line | |
| 2400 * at the bottom of the window. */ | |
| 2401 n = 0; | |
| 2402 while (n <= curwin->w_height && loff.lnum >= 1) | |
| 2403 { | |
| 2404 topline_back(&loff); | |
|
2082
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parents:
2070
diff
changeset
|
2405 if (loff.height == MAXCOL) |
|
8ca3c9ad0bee
updated for version 7.2.366
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parents:
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diff
changeset
|
2406 n = MAXCOL; |
|
8ca3c9ad0bee
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parents:
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diff
changeset
|
2407 else |
|
8ca3c9ad0bee
updated for version 7.2.366
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parents:
2070
diff
changeset
|
2408 n += loff.height; |
| 7 | 2409 } |
|
2082
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parents:
2070
diff
changeset
|
2410 if (loff.lnum < 1) /* at begin of file */ |
| 7 | 2411 { |
| 2412 curwin->w_topline = 1; | |
| 2413 #ifdef FEAT_DIFF | |
| 2414 max_topfill(); | |
| 2415 #endif | |
| 2416 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 2417 } | |
| 2418 else | |
| 2419 { | |
| 2420 /* Go two lines forward again. */ | |
| 2421 #ifdef FEAT_DIFF | |
| 2422 topline_botline(&loff); | |
| 2423 #endif | |
| 2424 botline_forw(&loff); | |
| 2425 botline_forw(&loff); | |
| 2426 #ifdef FEAT_DIFF | |
| 2427 botline_topline(&loff); | |
| 2428 #endif | |
| 2429 #ifdef FEAT_FOLDING | |
| 2430 /* We're at the wrong end of a fold now. */ | |
| 2431 (void)hasFolding(loff.lnum, &loff.lnum, NULL); | |
| 2432 #endif | |
| 2433 | |
| 2434 /* Always scroll at least one line. Avoid getting stuck on | |
| 2435 * very long lines. */ | |
| 2436 if (loff.lnum >= curwin->w_topline | |
| 2437 #ifdef FEAT_DIFF | |
| 2438 && (loff.lnum > curwin->w_topline | |
| 2439 || loff.fill >= curwin->w_topfill) | |
| 2440 #endif | |
| 2441 ) | |
| 2442 { | |
| 2443 #ifdef FEAT_DIFF | |
| 2444 /* First try using the maximum number of filler lines. If | |
| 2445 * that's not enough, backup one line. */ | |
| 2446 loff.fill = curwin->w_topfill; | |
| 2447 if (curwin->w_topfill < diff_check_fill(curwin, | |
| 2448 curwin->w_topline)) | |
| 2449 max_topfill(); | |
| 2450 if (curwin->w_topfill == loff.fill) | |
| 2451 #endif | |
| 2452 { | |
| 2453 --curwin->w_topline; | |
| 2454 #ifdef FEAT_DIFF | |
| 2455 curwin->w_topfill = 0; | |
| 2456 #endif | |
| 2457 } | |
| 2458 comp_botline(curwin); | |
| 2459 curwin->w_cursor.lnum = curwin->w_botline - 1; | |
| 5764 | 2460 curwin->w_valid &= |
| 2461 ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW|VALID_CROW); | |
| 7 | 2462 } |
| 2463 else | |
| 2464 { | |
| 2465 curwin->w_topline = loff.lnum; | |
| 2466 #ifdef FEAT_DIFF | |
| 2467 curwin->w_topfill = loff.fill; | |
| 2468 check_topfill(curwin, FALSE); | |
| 2469 #endif | |
| 2470 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 2471 } | |
| 2472 } | |
| 2473 } | |
| 2474 } | |
| 2475 #ifdef FEAT_FOLDING | |
| 2476 foldAdjustCursor(); | |
| 2477 #endif | |
| 2478 cursor_correct(); | |
|
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commit https://github.com/vim/vim/commit/bc54f3f3fed4dc3556df8c46cee6739d211b0eb2
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
2479 check_cursor_col(); |
| 161 | 2480 if (retval == OK) |
| 2481 beginline(BL_SOL | BL_FIX); | |
| 7 | 2482 curwin->w_valid &= ~(VALID_WCOL|VALID_WROW|VALID_VIRTCOL); |
| 2483 | |
|
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diff
changeset
|
2484 if (retval == OK && dir == FORWARD) |
| 7 | 2485 { |
|
14317
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parents:
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diff
changeset
|
2486 // Avoid the screen jumping up and down when 'scrolloff' is non-zero. |
|
1bc96dbb5498
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parents:
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diff
changeset
|
2487 // But make sure we scroll at least one line (happens with mix of long |
|
1bc96dbb5498
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parents:
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diff
changeset
|
2488 // wrapping lines and non-wrapping line). |
|
1bc96dbb5498
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changeset
|
2489 if (check_top_offset()) |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
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diff
changeset
|
2490 { |
|
1bc96dbb5498
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diff
changeset
|
2491 scroll_cursor_top(1, FALSE); |
|
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parents:
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diff
changeset
|
2492 if (curwin->w_topline <= old_topline |
| 7 | 2493 && old_topline < curbuf->b_ml.ml_line_count) |
|
14317
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diff
changeset
|
2494 { |
|
1bc96dbb5498
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parents:
13384
diff
changeset
|
2495 curwin->w_topline = old_topline + 1; |
| 7 | 2496 #ifdef FEAT_FOLDING |
|
14317
1bc96dbb5498
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parents:
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diff
changeset
|
2497 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
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diff
changeset
|
2498 #endif |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
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parents:
13384
diff
changeset
|
2499 } |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
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parents:
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diff
changeset
|
2500 } |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2501 #ifdef FEAT_FOLDING |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2502 else if (curwin->w_botline > curbuf->b_ml.ml_line_count) |
| 7 | 2503 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
| 2504 #endif | |
| 2505 } | |
| 2506 | |
| 2507 redraw_later(VALID); | |
| 2508 return retval; | |
| 2509 } | |
| 2510 | |
| 2511 /* | |
| 2512 * Decide how much overlap to use for page-up or page-down scrolling. | |
| 2513 * This is symmetric, so that doing both keeps the same lines displayed. | |
| 2514 * Three lines are examined: | |
| 2515 * | |
| 2516 * before CTRL-F after CTRL-F / before CTRL-B | |
| 2517 * etc. l1 | |
| 2518 * l1 last but one line ------------ | |
| 2519 * l2 last text line l2 top text line | |
| 2520 * ------------- l3 second text line | |
| 2521 * l3 etc. | |
| 2522 */ | |
| 2523 static void | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2524 get_scroll_overlap(lineoff_T *lp, int dir) |
| 7 | 2525 { |
| 2526 int h1, h2, h3, h4; | |
| 2527 int min_height = curwin->w_height - 2; | |
| 2528 lineoff_T loff0, loff1, loff2; | |
| 2529 | |
| 2530 #ifdef FEAT_DIFF | |
| 2531 if (lp->fill > 0) | |
| 2532 lp->height = 1; | |
| 2533 else | |
| 2534 lp->height = plines_nofill(lp->lnum); | |
| 2535 #else | |
| 2536 lp->height = plines(lp->lnum); | |
| 2537 #endif | |
| 2538 h1 = lp->height; | |
| 2539 if (h1 > min_height) | |
| 2540 return; /* no overlap */ | |
| 2541 | |
| 2542 loff0 = *lp; | |
| 2543 if (dir > 0) | |
| 2544 botline_forw(lp); | |
| 2545 else | |
| 2546 topline_back(lp); | |
| 2547 h2 = lp->height; | |
| 3968 | 2548 if (h2 == MAXCOL || h2 + h1 > min_height) |
| 7 | 2549 { |
| 2550 *lp = loff0; /* no overlap */ | |
| 2551 return; | |
| 2552 } | |
| 2553 | |
| 2554 loff1 = *lp; | |
| 2555 if (dir > 0) | |
| 2556 botline_forw(lp); | |
| 2557 else | |
| 2558 topline_back(lp); | |
| 2559 h3 = lp->height; | |
| 3968 | 2560 if (h3 == MAXCOL || h3 + h2 > min_height) |
| 7 | 2561 { |
| 2562 *lp = loff0; /* no overlap */ | |
| 2563 return; | |
| 2564 } | |
| 2565 | |
| 2566 loff2 = *lp; | |
| 2567 if (dir > 0) | |
| 2568 botline_forw(lp); | |
| 2569 else | |
| 2570 topline_back(lp); | |
| 2571 h4 = lp->height; | |
| 3968 | 2572 if (h4 == MAXCOL || h4 + h3 + h2 > min_height || h3 + h2 + h1 > min_height) |
| 7 | 2573 *lp = loff1; /* 1 line overlap */ |
| 2574 else | |
| 2575 *lp = loff2; /* 2 lines overlap */ | |
| 2576 return; | |
| 2577 } | |
| 2578 | |
| 2579 /* #define KEEP_SCREEN_LINE */ | |
| 2580 /* | |
| 2581 * Scroll 'scroll' lines up or down. | |
| 2582 */ | |
| 2583 void | |
|
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commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2584 halfpage(int flag, linenr_T Prenum) |
| 7 | 2585 { |
| 2586 long scrolled = 0; | |
| 2587 int i; | |
| 2588 int n; | |
| 2589 int room; | |
| 2590 | |
| 2591 if (Prenum) | |
| 2592 curwin->w_p_scr = (Prenum > curwin->w_height) ? | |
| 2593 curwin->w_height : Prenum; | |
| 2594 n = (curwin->w_p_scr <= curwin->w_height) ? | |
| 2595 curwin->w_p_scr : curwin->w_height; | |
| 2596 | |
|
11258
84f71a8a5f2c
patch 8.0.0515: ml_get errors in silent Ex mode
Christian Brabandt <cb@256bit.org>
parents:
11121
diff
changeset
|
2597 update_topline(); |
| 7 | 2598 validate_botline(); |
| 2599 room = curwin->w_empty_rows; | |
| 2600 #ifdef FEAT_DIFF | |
| 2601 room += curwin->w_filler_rows; | |
| 2602 #endif | |
| 2603 if (flag) | |
| 2604 { | |
| 2605 /* | |
| 2606 * scroll the text up | |
| 2607 */ | |
| 2608 while (n > 0 && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 2609 { | |
| 2610 #ifdef FEAT_DIFF | |
| 2611 if (curwin->w_topfill > 0) | |
| 2612 { | |
| 2613 i = 1; | |
| 2614 if (--n < 0 && scrolled > 0) | |
| 2615 break; | |
| 2616 --curwin->w_topfill; | |
| 2617 } | |
| 2618 else | |
| 2619 #endif | |
| 2620 { | |
|
7103
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commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2621 i = PLINES_NOFILL(curwin->w_topline); |
| 7 | 2622 n -= i; |
| 2623 if (n < 0 && scrolled > 0) | |
| 2624 break; | |
| 2625 #ifdef FEAT_FOLDING | |
| 2626 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
| 2627 #endif | |
| 2628 ++curwin->w_topline; | |
| 2629 #ifdef FEAT_DIFF | |
| 2630 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 2631 #endif | |
| 2632 | |
| 2633 #ifndef KEEP_SCREEN_LINE | |
| 2634 if (curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
| 2635 { | |
| 2636 ++curwin->w_cursor.lnum; | |
| 2637 curwin->w_valid &= | |
| 2638 ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
| 2639 } | |
| 2640 #endif | |
| 2641 } | |
| 2642 curwin->w_valid &= ~(VALID_CROW|VALID_WROW); | |
| 2643 scrolled += i; | |
| 2644 | |
| 2645 /* | |
| 2646 * Correct w_botline for changed w_topline. | |
| 2647 * Won't work when there are filler lines. | |
| 2648 */ | |
| 2649 #ifdef FEAT_DIFF | |
| 2650 if (curwin->w_p_diff) | |
| 2651 curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2652 else | |
| 2653 #endif | |
| 2654 { | |
| 2655 room += i; | |
| 2656 do | |
| 2657 { | |
| 2658 i = plines(curwin->w_botline); | |
| 2659 if (i > room) | |
| 2660 break; | |
| 2661 #ifdef FEAT_FOLDING | |
| 2662 (void)hasFolding(curwin->w_botline, NULL, | |
| 2663 &curwin->w_botline); | |
| 2664 #endif | |
| 2665 ++curwin->w_botline; | |
| 2666 room -= i; | |
| 2667 } while (curwin->w_botline <= curbuf->b_ml.ml_line_count); | |
| 2668 } | |
| 2669 } | |
| 2670 | |
| 2671 #ifndef KEEP_SCREEN_LINE | |
| 2672 /* | |
| 2673 * When hit bottom of the file: move cursor down. | |
| 2674 */ | |
| 2675 if (n > 0) | |
| 2676 { | |
| 2677 # ifdef FEAT_FOLDING | |
| 2678 if (hasAnyFolding(curwin)) | |
| 2679 { | |
| 2680 while (--n >= 0 | |
| 2681 && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
| 2682 { | |
| 2683 (void)hasFolding(curwin->w_cursor.lnum, NULL, | |
| 2684 &curwin->w_cursor.lnum); | |
| 2685 ++curwin->w_cursor.lnum; | |
| 2686 } | |
| 2687 } | |
| 2688 else | |
| 2689 # endif | |
| 2690 curwin->w_cursor.lnum += n; | |
| 2691 check_cursor_lnum(); | |
| 2692 } | |
| 2693 #else | |
| 2694 /* try to put the cursor in the same screen line */ | |
| 2695 while ((curwin->w_cursor.lnum < curwin->w_topline || scrolled > 0) | |
| 2696 && curwin->w_cursor.lnum < curwin->w_botline - 1) | |
| 2697 { | |
| 2698 scrolled -= plines(curwin->w_cursor.lnum); | |
| 2699 if (scrolled < 0 && curwin->w_cursor.lnum >= curwin->w_topline) | |
| 2700 break; | |
| 2701 # ifdef FEAT_FOLDING | |
| 2702 (void)hasFolding(curwin->w_cursor.lnum, NULL, | |
| 2703 &curwin->w_cursor.lnum); | |
| 2704 # endif | |
| 2705 ++curwin->w_cursor.lnum; | |
| 2706 } | |
| 2707 #endif | |
| 2708 } | |
| 2709 else | |
| 2710 { | |
| 2711 /* | |
| 2712 * scroll the text down | |
| 2713 */ | |
| 2714 while (n > 0 && curwin->w_topline > 1) | |
| 2715 { | |
| 2716 #ifdef FEAT_DIFF | |
| 2717 if (curwin->w_topfill < diff_check_fill(curwin, curwin->w_topline)) | |
| 2718 { | |
| 2719 i = 1; | |
| 2720 if (--n < 0 && scrolled > 0) | |
| 2721 break; | |
| 2722 ++curwin->w_topfill; | |
| 2723 } | |
| 2724 else | |
| 2725 #endif | |
| 2726 { | |
|
7103
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Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2727 i = PLINES_NOFILL(curwin->w_topline - 1); |
| 7 | 2728 n -= i; |
| 2729 if (n < 0 && scrolled > 0) | |
| 2730 break; | |
| 2731 --curwin->w_topline; | |
| 2732 #ifdef FEAT_FOLDING | |
| 2733 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 2734 #endif | |
| 2735 #ifdef FEAT_DIFF | |
| 2736 curwin->w_topfill = 0; | |
| 2737 #endif | |
| 2738 } | |
| 2739 curwin->w_valid &= ~(VALID_CROW|VALID_WROW| | |
| 2740 VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2741 scrolled += i; | |
| 2742 #ifndef KEEP_SCREEN_LINE | |
| 2743 if (curwin->w_cursor.lnum > 1) | |
| 2744 { | |
| 2745 --curwin->w_cursor.lnum; | |
| 2746 curwin->w_valid &= ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
| 2747 } | |
| 2748 #endif | |
| 2749 } | |
| 2750 #ifndef KEEP_SCREEN_LINE | |
| 2751 /* | |
| 2752 * When hit top of the file: move cursor up. | |
| 2753 */ | |
| 2754 if (n > 0) | |
| 2755 { | |
| 2756 if (curwin->w_cursor.lnum <= (linenr_T)n) | |
| 2757 curwin->w_cursor.lnum = 1; | |
| 2758 else | |
| 2759 # ifdef FEAT_FOLDING | |
| 2760 if (hasAnyFolding(curwin)) | |
| 2761 { | |
| 2762 while (--n >= 0 && curwin->w_cursor.lnum > 1) | |
| 2763 { | |
| 2764 --curwin->w_cursor.lnum; | |
| 2765 (void)hasFolding(curwin->w_cursor.lnum, | |
| 2766 &curwin->w_cursor.lnum, NULL); | |
| 2767 } | |
| 2768 } | |
| 2769 else | |
| 2770 # endif | |
| 2771 curwin->w_cursor.lnum -= n; | |
| 2772 } | |
| 2773 #else | |
| 2774 /* try to put the cursor in the same screen line */ | |
| 2775 scrolled += n; /* move cursor when topline is 1 */ | |
| 2776 while (curwin->w_cursor.lnum > curwin->w_topline | |
| 2777 && (scrolled > 0 || curwin->w_cursor.lnum >= curwin->w_botline)) | |
| 2778 { | |
| 2779 scrolled -= plines(curwin->w_cursor.lnum - 1); | |
| 2780 if (scrolled < 0 && curwin->w_cursor.lnum < curwin->w_botline) | |
| 2781 break; | |
| 2782 --curwin->w_cursor.lnum; | |
| 2783 # ifdef FEAT_FOLDING | |
| 2784 foldAdjustCursor(); | |
| 2785 # endif | |
| 2786 } | |
| 2787 #endif | |
| 2788 } | |
| 2789 # ifdef FEAT_FOLDING | |
| 2790 /* Move cursor to first line of closed fold. */ | |
| 2791 foldAdjustCursor(); | |
| 2792 # endif | |
| 2793 #ifdef FEAT_DIFF | |
| 2794 check_topfill(curwin, !flag); | |
| 2795 #endif | |
| 2796 cursor_correct(); | |
| 2797 beginline(BL_SOL | BL_FIX); | |
| 2798 redraw_later(VALID); | |
| 2799 } | |
|
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2800 |
|
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|
2801 void |
|
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Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
2802 do_check_cursorbind(void) |
|
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2803 { |
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|
2804 linenr_T line = curwin->w_cursor.lnum; |
| 3415 | 2805 colnr_T col = curwin->w_cursor.col; |
| 2806 # ifdef FEAT_VIRTUALEDIT | |
| 2807 colnr_T coladd = curwin->w_cursor.coladd; | |
| 2808 # endif | |
| 3433 | 2809 colnr_T curswant = curwin->w_curswant; |
| 2810 int set_curswant = curwin->w_set_curswant; | |
|
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diff
changeset
|
2811 win_T *old_curwin = curwin; |
|
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|
2812 buf_T *old_curbuf = curbuf; |
| 2693 | 2813 int restart_edit_save; |
|
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|
2814 int old_VIsual_select = VIsual_select; |
|
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2815 int old_VIsual_active = VIsual_active; |
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2816 |
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2817 /* |
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2818 * loop through the cursorbound windows |
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2819 */ |
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|
2820 VIsual_select = VIsual_active = 0; |
|
9649
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Christian Brabandt <cb@256bit.org>
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8643
diff
changeset
|
2821 FOR_ALL_WINDOWS(curwin) |
|
2250
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2822 { |
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2823 curbuf = curwin->w_buffer; |
|
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2824 /* skip original window and windows with 'noscrollbind' */ |
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2825 if (curwin != old_curwin && curwin->w_p_crb) |
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2826 { |
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2827 # ifdef FEAT_DIFF |
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2828 if (curwin->w_p_diff) |
|
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2829 curwin->w_cursor.lnum = |
|
d0b74b18e4b5
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|
2830 diff_get_corresponding_line(old_curbuf, line); |
|
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2831 else |
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2832 # endif |
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2833 curwin->w_cursor.lnum = line; |
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changeset
|
2834 curwin->w_cursor.col = col; |
| 3415 | 2835 # ifdef FEAT_VIRTUALEDIT |
| 2836 curwin->w_cursor.coladd = coladd; | |
| 2837 # endif | |
| 3433 | 2838 curwin->w_curswant = curswant; |
| 2839 curwin->w_set_curswant = set_curswant; | |
|
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|
2840 |
| 2693 | 2841 /* Make sure the cursor is in a valid position. Temporarily set |
| 2842 * "restart_edit" to allow the cursor to be beyond the EOL. */ | |
| 2843 restart_edit_save = restart_edit; | |
| 2844 restart_edit = TRUE; | |
|
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2845 check_cursor(); |
|
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2846 # ifdef FEAT_SYN_HL |
|
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patch 8.0.0188: redrawing for 'cursorbind' is inefficient
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parents:
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2847 if (curwin->w_p_cul || curwin->w_p_cuc) |
|
10583
f91c0376f2c6
patch 8.0.0181: with cursorbind set cursor column highlighting is off
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parents:
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diff
changeset
|
2848 validate_cursor(); |
|
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|
2849 # endif |
| 2693 | 2850 restart_edit = restart_edit_save; |
|
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2851 # ifdef FEAT_MBYTE |
|
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|
2852 /* Correct cursor for multi-byte character. */ |
|
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parents:
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|
2853 if (has_mbyte) |
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changeset
|
2854 mb_adjust_cursor(); |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2855 # endif |
|
10597
472bff31a20a
patch 8.0.0188: redrawing for 'cursorbind' is inefficient
Christian Brabandt <cb@256bit.org>
parents:
10585
diff
changeset
|
2856 redraw_later(VALID); |
|
2250
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2857 |
| 2688 | 2858 /* Only scroll when 'scrollbind' hasn't done this. */ |
| 2859 if (!curwin->w_p_scb) | |
| 2860 update_topline(); | |
|
2250
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2861 curwin->w_redr_status = TRUE; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2862 } |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2863 } |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2864 |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2865 /* |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2866 * reset current-window |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2867 */ |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2868 VIsual_select = old_VIsual_select; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2869 VIsual_active = old_VIsual_active; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2870 curwin = old_curwin; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2871 curbuf = old_curbuf; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2872 } |