Mercurial > vim
annotate src/move.c @ 15556:83498c37ab4b
Added tag v8.1.0785 for changeset d89c5b339c2ad8aae5460f7c3c767539bc2cc91f
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Sun, 20 Jan 2019 15:45:08 +0100 |
| parents | d7432dcb6b7c |
| children | 536dd2bc5ac9 |
| 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 void |
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121 reset_cursorline(void) |
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122 { |
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123 curwin->w_last_cursorline = 0; |
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124 } |
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125 #endif |
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126 |
| 7 | 127 /* |
| 5764 | 128 * Redraw when w_cline_row changes and 'relativenumber' or 'cursorline' is |
| 129 * set. | |
| 130 */ | |
| 131 static void | |
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132 redraw_for_cursorline(win_T *wp) |
| 5764 | 133 { |
| 134 if ((wp->w_p_rnu | |
| 135 #ifdef FEAT_SYN_HL | |
| 136 || wp->w_p_cul | |
| 137 #endif | |
| 138 ) | |
| 139 && (wp->w_valid & VALID_CROW) == 0 | |
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140 #ifdef FEAT_INS_EXPAND |
| 5764 | 141 && !pum_visible() |
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142 #endif |
| 5764 | 143 ) |
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144 { |
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145 if (wp->w_p_rnu) |
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146 // win_line() will redraw the number column only. |
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147 redraw_win_later(wp, VALID); |
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148 #ifdef FEAT_SYN_HL |
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149 if (wp->w_p_cul) |
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150 { |
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151 if (wp->w_redr_type <= VALID && wp->w_last_cursorline != 0) |
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152 { |
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153 // "w_last_cursorline" may be outdated, worst case we redraw |
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154 // too much. This is optimized for moving the cursor around in |
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155 // the current window. |
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156 redrawWinline(wp, wp->w_last_cursorline); |
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157 redrawWinline(wp, wp->w_cursor.lnum); |
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158 } |
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159 else |
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160 redraw_win_later(wp, SOME_VALID); |
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161 wp->w_last_cursorline = wp->w_cursor.lnum; |
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162 } |
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163 #endif |
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164 } |
| 5764 | 165 } |
| 166 | |
| 167 /* | |
| 7 | 168 * Update curwin->w_topline and redraw if necessary. |
| 169 * Used to update the screen before printing a message. | |
| 170 */ | |
| 171 void | |
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172 update_topline_redraw(void) |
| 7 | 173 { |
| 174 update_topline(); | |
| 175 if (must_redraw) | |
| 176 update_screen(0); | |
| 177 } | |
| 178 | |
| 179 /* | |
| 180 * Update curwin->w_topline to move the cursor onto the screen. | |
| 181 */ | |
| 182 void | |
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183 update_topline(void) |
| 7 | 184 { |
| 185 long line_count; | |
| 186 int halfheight; | |
| 187 int n; | |
| 188 linenr_T old_topline; | |
| 189 #ifdef FEAT_DIFF | |
| 190 int old_topfill; | |
| 191 #endif | |
| 192 #ifdef FEAT_FOLDING | |
| 193 linenr_T lnum; | |
| 194 #endif | |
| 195 int check_topline = FALSE; | |
| 196 int check_botline = FALSE; | |
| 197 #ifdef FEAT_MOUSE | |
| 198 int save_so = p_so; | |
| 199 #endif | |
| 200 | |
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201 /* If there is no valid screen and when the window height is zero just use |
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202 * the cursor line. */ |
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203 if (!screen_valid(TRUE) || curwin->w_height == 0) |
| 6247 | 204 { |
| 205 curwin->w_topline = curwin->w_cursor.lnum; | |
| 206 curwin->w_botline = curwin->w_topline; | |
| 207 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 208 curwin->w_scbind_pos = 1; | |
| 209 return; | |
| 210 } | |
| 211 | |
| 7 | 212 check_cursor_moved(curwin); |
| 213 if (curwin->w_valid & VALID_TOPLINE) | |
| 214 return; | |
| 215 | |
| 216 #ifdef FEAT_MOUSE | |
| 217 /* When dragging with the mouse, don't scroll that quickly */ | |
| 1121 | 218 if (mouse_dragging > 0) |
| 7 | 219 p_so = mouse_dragging - 1; |
| 220 #endif | |
| 221 | |
| 222 old_topline = curwin->w_topline; | |
| 223 #ifdef FEAT_DIFF | |
| 224 old_topfill = curwin->w_topfill; | |
| 225 #endif | |
| 226 | |
| 227 /* | |
| 228 * If the buffer is empty, always set topline to 1. | |
| 229 */ | |
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230 if (BUFEMPTY()) /* special case - file is empty */ |
| 7 | 231 { |
| 232 if (curwin->w_topline != 1) | |
| 233 redraw_later(NOT_VALID); | |
| 234 curwin->w_topline = 1; | |
| 235 curwin->w_botline = 2; | |
| 236 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 237 curwin->w_scbind_pos = 1; | |
| 238 } | |
| 239 | |
| 240 /* | |
| 241 * If the cursor is above or near the top of the window, scroll the window | |
| 242 * to show the line the cursor is in, with 'scrolloff' context. | |
| 243 */ | |
| 244 else | |
| 245 { | |
| 246 if (curwin->w_topline > 1) | |
| 247 { | |
| 248 /* If the cursor is above topline, scrolling is always needed. | |
| 249 * If the cursor is far below topline and there is no folding, | |
| 250 * scrolling down is never needed. */ | |
| 251 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 252 check_topline = TRUE; | |
| 253 else if (check_top_offset()) | |
| 254 check_topline = TRUE; | |
| 255 } | |
| 256 #ifdef FEAT_DIFF | |
| 257 /* Check if there are more filler lines than allowed. */ | |
| 258 if (!check_topline && curwin->w_topfill > diff_check_fill(curwin, | |
| 259 curwin->w_topline)) | |
| 260 check_topline = TRUE; | |
| 261 #endif | |
| 262 | |
| 263 if (check_topline) | |
| 264 { | |
| 265 halfheight = curwin->w_height / 2 - 1; | |
| 266 if (halfheight < 2) | |
| 267 halfheight = 2; | |
| 268 | |
| 269 #ifdef FEAT_FOLDING | |
| 270 if (hasAnyFolding(curwin)) | |
| 271 { | |
| 272 /* Count the number of logical lines between the cursor and | |
| 273 * topline + p_so (approximation of how much will be | |
| 274 * scrolled). */ | |
| 275 n = 0; | |
| 276 for (lnum = curwin->w_cursor.lnum; | |
| 277 lnum < curwin->w_topline + p_so; ++lnum) | |
| 278 { | |
| 279 ++n; | |
| 280 /* stop at end of file or when we know we are far off */ | |
| 281 if (lnum >= curbuf->b_ml.ml_line_count || n >= halfheight) | |
| 282 break; | |
| 283 (void)hasFolding(lnum, NULL, &lnum); | |
| 284 } | |
| 285 } | |
| 286 else | |
| 287 #endif | |
| 288 n = curwin->w_topline + p_so - curwin->w_cursor.lnum; | |
| 289 | |
| 290 /* If we weren't very close to begin with, we scroll to put the | |
| 291 * cursor in the middle of the window. Otherwise put the cursor | |
| 292 * near the top of the window. */ | |
| 293 if (n >= halfheight) | |
| 294 scroll_cursor_halfway(FALSE); | |
| 295 else | |
| 296 { | |
| 532 | 297 scroll_cursor_top(scrolljump_value(), FALSE); |
| 7 | 298 check_botline = TRUE; |
| 299 } | |
| 300 } | |
| 301 | |
| 302 else | |
| 303 { | |
| 304 #ifdef FEAT_FOLDING | |
| 305 /* Make sure topline is the first line of a fold. */ | |
| 306 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 307 #endif | |
| 308 check_botline = TRUE; | |
| 309 } | |
| 310 } | |
| 311 | |
| 312 /* | |
| 313 * If the cursor is below the bottom of the window, scroll the window | |
| 314 * to put the cursor on the window. | |
| 315 * When w_botline is invalid, recompute it first, to avoid a redraw later. | |
| 316 * If w_botline was approximated, we might need a redraw later in a few | |
| 317 * cases, but we don't want to spend (a lot of) time recomputing w_botline | |
| 318 * for every small change. | |
| 319 */ | |
| 320 if (check_botline) | |
| 321 { | |
| 322 if (!(curwin->w_valid & VALID_BOTLINE_AP)) | |
| 323 validate_botline(); | |
| 324 | |
| 325 if (curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 326 { | |
| 1744 | 327 if (curwin->w_cursor.lnum < curwin->w_botline) |
| 328 { | |
| 329 if (((long)curwin->w_cursor.lnum | |
| 7 | 330 >= (long)curwin->w_botline - p_so |
| 331 #ifdef FEAT_FOLDING | |
| 332 || hasAnyFolding(curwin) | |
| 333 #endif | |
| 334 )) | |
| 1744 | 335 { |
| 7 | 336 lineoff_T loff; |
| 337 | |
| 1744 | 338 /* Cursor is (a few lines) above botline, check if there are |
| 339 * 'scrolloff' window lines below the cursor. If not, need to | |
| 340 * scroll. */ | |
| 7 | 341 n = curwin->w_empty_rows; |
| 342 loff.lnum = curwin->w_cursor.lnum; | |
| 343 #ifdef FEAT_FOLDING | |
| 344 /* In a fold go to its last line. */ | |
| 345 (void)hasFolding(loff.lnum, NULL, &loff.lnum); | |
| 346 #endif | |
| 347 #ifdef FEAT_DIFF | |
| 348 loff.fill = 0; | |
| 349 n += curwin->w_filler_rows; | |
| 350 #endif | |
| 351 loff.height = 0; | |
| 352 while (loff.lnum < curwin->w_botline | |
| 353 #ifdef FEAT_DIFF | |
| 354 && (loff.lnum + 1 < curwin->w_botline || loff.fill == 0) | |
| 355 #endif | |
| 356 ) | |
| 357 { | |
| 358 n += loff.height; | |
| 359 if (n >= p_so) | |
| 360 break; | |
| 361 botline_forw(&loff); | |
| 362 } | |
| 363 if (n >= p_so) | |
| 364 /* sufficient context, no need to scroll */ | |
| 365 check_botline = FALSE; | |
| 1744 | 366 } |
| 367 else | |
| 368 /* sufficient context, no need to scroll */ | |
| 369 check_botline = FALSE; | |
| 7 | 370 } |
| 371 if (check_botline) | |
| 372 { | |
| 373 #ifdef FEAT_FOLDING | |
| 374 if (hasAnyFolding(curwin)) | |
| 375 { | |
| 376 /* Count the number of logical lines between the cursor and | |
| 377 * botline - p_so (approximation of how much will be | |
| 378 * scrolled). */ | |
| 379 line_count = 0; | |
| 380 for (lnum = curwin->w_cursor.lnum; | |
| 381 lnum >= curwin->w_botline - p_so; --lnum) | |
| 382 { | |
| 383 ++line_count; | |
| 384 /* stop at end of file or when we know we are far off */ | |
| 385 if (lnum <= 0 || line_count > curwin->w_height + 1) | |
| 386 break; | |
| 387 (void)hasFolding(lnum, &lnum, NULL); | |
| 388 } | |
| 389 } | |
| 390 else | |
| 391 #endif | |
| 392 line_count = curwin->w_cursor.lnum - curwin->w_botline | |
| 393 + 1 + p_so; | |
| 394 if (line_count <= curwin->w_height + 1) | |
| 532 | 395 scroll_cursor_bot(scrolljump_value(), FALSE); |
| 7 | 396 else |
| 397 scroll_cursor_halfway(FALSE); | |
| 398 } | |
| 399 } | |
| 400 } | |
| 401 curwin->w_valid |= VALID_TOPLINE; | |
| 402 | |
| 403 /* | |
| 404 * Need to redraw when topline changed. | |
| 405 */ | |
| 406 if (curwin->w_topline != old_topline | |
| 407 #ifdef FEAT_DIFF | |
| 408 || curwin->w_topfill != old_topfill | |
| 409 #endif | |
| 410 ) | |
| 411 { | |
| 3318 | 412 dollar_vcol = -1; |
| 740 | 413 if (curwin->w_skipcol != 0) |
| 7 | 414 { |
| 415 curwin->w_skipcol = 0; | |
| 416 redraw_later(NOT_VALID); | |
| 417 } | |
| 418 else | |
| 419 redraw_later(VALID); | |
| 420 /* May need to set w_skipcol when cursor in w_topline. */ | |
| 421 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 422 validate_cursor(); | |
| 423 } | |
| 424 | |
| 425 #ifdef FEAT_MOUSE | |
| 426 p_so = save_so; | |
| 427 #endif | |
| 428 } | |
| 429 | |
| 430 /* | |
| 532 | 431 * Return the scrolljump value to use for the current window. |
| 432 * When 'scrolljump' is positive use it as-is. | |
| 433 * When 'scrolljump' is negative use it as a percentage of the window height. | |
| 434 */ | |
| 435 static int | |
|
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diff
changeset
|
436 scrolljump_value(void) |
| 532 | 437 { |
| 438 if (p_sj >= 0) | |
| 439 return (int)p_sj; | |
| 440 return (curwin->w_height * -p_sj) / 100; | |
| 441 } | |
| 442 | |
| 443 /* | |
| 7 | 444 * Return TRUE when there are not 'scrolloff' lines above the cursor for the |
| 445 * current window. | |
| 446 */ | |
| 447 static int | |
|
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|
448 check_top_offset(void) |
| 7 | 449 { |
| 450 lineoff_T loff; | |
| 451 int n; | |
| 452 | |
| 453 if (curwin->w_cursor.lnum < curwin->w_topline + p_so | |
| 454 #ifdef FEAT_FOLDING | |
| 455 || hasAnyFolding(curwin) | |
| 456 #endif | |
| 457 ) | |
| 458 { | |
| 459 loff.lnum = curwin->w_cursor.lnum; | |
| 460 #ifdef FEAT_DIFF | |
| 461 loff.fill = 0; | |
| 462 n = curwin->w_topfill; /* always have this context */ | |
| 463 #else | |
| 464 n = 0; | |
| 465 #endif | |
| 466 /* Count the visible screen lines above the cursor line. */ | |
| 467 while (n < p_so) | |
| 468 { | |
| 469 topline_back(&loff); | |
| 470 /* Stop when included a line above the window. */ | |
| 471 if (loff.lnum < curwin->w_topline | |
| 472 #ifdef FEAT_DIFF | |
| 473 || (loff.lnum == curwin->w_topline && loff.fill > 0) | |
| 474 #endif | |
| 475 ) | |
| 476 break; | |
| 477 n += loff.height; | |
| 478 } | |
| 479 if (n < p_so) | |
| 480 return TRUE; | |
| 481 } | |
| 482 return FALSE; | |
| 483 } | |
| 484 | |
| 485 void | |
|
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changeset
|
486 update_curswant(void) |
| 7 | 487 { |
| 488 if (curwin->w_set_curswant) | |
| 489 { | |
| 490 validate_virtcol(); | |
| 491 curwin->w_curswant = curwin->w_virtcol; | |
| 492 curwin->w_set_curswant = FALSE; | |
| 493 } | |
| 494 } | |
| 495 | |
| 496 /* | |
| 497 * Check if the cursor has moved. Set the w_valid flag accordingly. | |
| 498 */ | |
| 499 void | |
|
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changeset
|
500 check_cursor_moved(win_T *wp) |
| 7 | 501 { |
| 502 if (wp->w_cursor.lnum != wp->w_valid_cursor.lnum) | |
| 503 { | |
| 504 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 505 |VALID_CHEIGHT|VALID_CROW|VALID_TOPLINE); | |
| 506 wp->w_valid_cursor = wp->w_cursor; | |
| 507 wp->w_valid_leftcol = wp->w_leftcol; | |
| 508 } | |
| 509 else if (wp->w_cursor.col != wp->w_valid_cursor.col | |
| 510 || wp->w_leftcol != wp->w_valid_leftcol | |
| 511 #ifdef FEAT_VIRTUALEDIT | |
| 512 || wp->w_cursor.coladd != wp->w_valid_cursor.coladd | |
| 513 #endif | |
| 514 ) | |
| 515 { | |
| 516 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL); | |
| 517 wp->w_valid_cursor.col = wp->w_cursor.col; | |
| 518 wp->w_valid_leftcol = wp->w_leftcol; | |
| 519 #ifdef FEAT_VIRTUALEDIT | |
| 520 wp->w_valid_cursor.coladd = wp->w_cursor.coladd; | |
| 521 #endif | |
| 522 } | |
| 523 } | |
| 524 | |
| 525 /* | |
| 526 * Call this function when some window settings have changed, which require | |
| 527 * the cursor position, botline and topline to be recomputed and the window to | |
| 528 * be redrawn. E.g, when changing the 'wrap' option or folding. | |
| 529 */ | |
| 530 void | |
|
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|
531 changed_window_setting(void) |
| 7 | 532 { |
| 533 changed_window_setting_win(curwin); | |
| 534 } | |
| 535 | |
| 536 void | |
|
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|
537 changed_window_setting_win(win_T *wp) |
| 7 | 538 { |
| 539 wp->w_lines_valid = 0; | |
| 540 changed_line_abv_curs_win(wp); | |
| 541 wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP|VALID_TOPLINE); | |
| 542 redraw_win_later(wp, NOT_VALID); | |
| 543 } | |
| 544 | |
| 545 /* | |
| 546 * Set wp->w_topline to a certain number. | |
| 547 */ | |
| 548 void | |
|
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|
549 set_topline(win_T *wp, linenr_T lnum) |
| 7 | 550 { |
| 551 #ifdef FEAT_FOLDING | |
| 552 /* go to first of folded lines */ | |
| 553 (void)hasFoldingWin(wp, lnum, &lnum, NULL, TRUE, NULL); | |
| 554 #endif | |
| 555 /* Approximate the value of w_botline */ | |
| 556 wp->w_botline += lnum - wp->w_topline; | |
| 557 wp->w_topline = lnum; | |
| 1744 | 558 wp->w_topline_was_set = TRUE; |
| 7 | 559 #ifdef FEAT_DIFF |
| 560 wp->w_topfill = 0; | |
| 561 #endif | |
| 562 wp->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_TOPLINE); | |
| 563 /* Don't set VALID_TOPLINE here, 'scrolloff' needs to be checked. */ | |
| 564 redraw_later(VALID); | |
| 565 } | |
| 566 | |
| 567 /* | |
| 568 * Call this function when the length of the cursor line (in screen | |
| 569 * characters) has changed, and the change is before the cursor. | |
| 570 * Need to take care of w_botline separately! | |
| 571 */ | |
| 572 void | |
|
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573 changed_cline_bef_curs(void) |
| 7 | 574 { |
| 575 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 576 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 577 } | |
| 578 | |
| 579 void | |
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580 changed_cline_bef_curs_win(win_T *wp) |
| 7 | 581 { |
| 582 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 583 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 584 } | |
| 585 | |
| 586 /* | |
| 587 * Call this function when the length of a line (in screen characters) above | |
| 588 * the cursor have changed. | |
| 589 * Need to take care of w_botline separately! | |
| 590 */ | |
| 591 void | |
|
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592 changed_line_abv_curs(void) |
| 7 | 593 { |
| 594 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
| 595 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 596 } | |
| 597 | |
| 598 void | |
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|
599 changed_line_abv_curs_win(win_T *wp) |
| 7 | 600 { |
| 601 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
| 602 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 603 } | |
| 604 | |
| 605 /* | |
| 606 * Make sure the value of curwin->w_botline is valid. | |
| 607 */ | |
| 608 void | |
|
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609 validate_botline(void) |
| 7 | 610 { |
| 611 if (!(curwin->w_valid & VALID_BOTLINE)) | |
| 612 comp_botline(curwin); | |
| 613 } | |
| 614 | |
| 615 /* | |
| 616 * Mark curwin->w_botline as invalid (because of some change in the buffer). | |
| 617 */ | |
| 618 void | |
|
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619 invalidate_botline(void) |
| 7 | 620 { |
| 621 curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 622 } | |
| 623 | |
| 624 void | |
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625 invalidate_botline_win(win_T *wp) |
| 7 | 626 { |
| 627 wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 628 } | |
| 629 | |
| 630 void | |
|
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631 approximate_botline_win( |
|
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|
632 win_T *wp) |
| 7 | 633 { |
| 634 wp->w_valid &= ~VALID_BOTLINE; | |
| 635 } | |
| 636 | |
| 637 /* | |
| 638 * Return TRUE if curwin->w_wrow and curwin->w_wcol are valid. | |
| 639 */ | |
| 640 int | |
|
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641 cursor_valid(void) |
| 7 | 642 { |
| 643 check_cursor_moved(curwin); | |
| 644 return ((curwin->w_valid & (VALID_WROW|VALID_WCOL)) == | |
| 645 (VALID_WROW|VALID_WCOL)); | |
| 646 } | |
| 647 | |
| 648 /* | |
| 649 * Validate cursor position. Makes sure w_wrow and w_wcol are valid. | |
| 650 * w_topline must be valid, you may need to call update_topline() first! | |
| 651 */ | |
| 652 void | |
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653 validate_cursor(void) |
| 7 | 654 { |
| 655 check_cursor_moved(curwin); | |
| 656 if ((curwin->w_valid & (VALID_WCOL|VALID_WROW)) != (VALID_WCOL|VALID_WROW)) | |
| 657 curs_columns(TRUE); | |
| 658 } | |
| 659 | |
| 660 #if defined(FEAT_GUI) || defined(PROTO) | |
| 661 /* | |
| 662 * validate w_cline_row. | |
| 663 */ | |
| 664 void | |
|
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665 validate_cline_row(void) |
| 7 | 666 { |
| 667 /* | |
| 668 * First make sure that w_topline is valid (after moving the cursor). | |
| 669 */ | |
| 670 update_topline(); | |
| 671 check_cursor_moved(curwin); | |
| 672 if (!(curwin->w_valid & VALID_CROW)) | |
| 6441 | 673 curs_rows(curwin); |
| 7 | 674 } |
| 675 #endif | |
| 676 | |
| 677 /* | |
| 678 * Compute wp->w_cline_row and wp->w_cline_height, based on the current value | |
|
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679 * of wp->w_topline. |
| 7 | 680 */ |
| 681 static void | |
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changeset
|
682 curs_rows(win_T *wp) |
| 7 | 683 { |
| 684 linenr_T lnum; | |
| 685 int i; | |
| 686 int all_invalid; | |
| 687 int valid; | |
| 688 #ifdef FEAT_FOLDING | |
| 689 long fold_count; | |
| 690 #endif | |
| 691 | |
| 692 /* Check if wp->w_lines[].wl_size is invalid */ | |
| 693 all_invalid = (!redrawing() | |
| 694 || wp->w_lines_valid == 0 | |
| 695 || wp->w_lines[0].wl_lnum > wp->w_topline); | |
| 696 i = 0; | |
| 697 wp->w_cline_row = 0; | |
| 698 for (lnum = wp->w_topline; lnum < wp->w_cursor.lnum; ++i) | |
| 699 { | |
| 700 valid = FALSE; | |
| 701 if (!all_invalid && i < wp->w_lines_valid) | |
| 702 { | |
| 703 if (wp->w_lines[i].wl_lnum < lnum || !wp->w_lines[i].wl_valid) | |
| 704 continue; /* skip changed or deleted lines */ | |
| 705 if (wp->w_lines[i].wl_lnum == lnum) | |
| 706 { | |
| 707 #ifdef FEAT_FOLDING | |
| 708 /* Check for newly inserted lines below this row, in which | |
| 709 * case we need to check for folded lines. */ | |
| 710 if (!wp->w_buffer->b_mod_set | |
| 711 || wp->w_lines[i].wl_lastlnum < wp->w_cursor.lnum | |
| 712 || wp->w_buffer->b_mod_top | |
| 713 > wp->w_lines[i].wl_lastlnum + 1) | |
| 714 #endif | |
| 715 valid = TRUE; | |
| 716 } | |
| 717 else if (wp->w_lines[i].wl_lnum > lnum) | |
| 718 --i; /* hold at inserted lines */ | |
| 719 } | |
| 720 if (valid | |
| 721 #ifdef FEAT_DIFF | |
| 722 && (lnum != wp->w_topline || !wp->w_p_diff) | |
| 723 #endif | |
| 724 ) | |
| 725 { | |
| 726 #ifdef FEAT_FOLDING | |
| 727 lnum = wp->w_lines[i].wl_lastlnum + 1; | |
| 728 /* Cursor inside folded lines, don't count this row */ | |
| 729 if (lnum > wp->w_cursor.lnum) | |
| 730 break; | |
| 731 #else | |
| 732 ++lnum; | |
| 733 #endif | |
| 734 wp->w_cline_row += wp->w_lines[i].wl_size; | |
| 735 } | |
| 736 else | |
| 737 { | |
| 738 #ifdef FEAT_FOLDING | |
| 739 fold_count = foldedCount(wp, lnum, NULL); | |
| 740 if (fold_count) | |
| 741 { | |
| 742 lnum += fold_count; | |
| 743 if (lnum > wp->w_cursor.lnum) | |
| 744 break; | |
| 745 ++wp->w_cline_row; | |
| 746 } | |
| 747 else | |
| 748 #endif | |
| 749 #ifdef FEAT_DIFF | |
| 750 if (lnum == wp->w_topline) | |
| 751 wp->w_cline_row += plines_win_nofill(wp, lnum++, TRUE) | |
| 752 + wp->w_topfill; | |
| 753 else | |
| 754 #endif | |
| 755 wp->w_cline_row += plines_win(wp, lnum++, TRUE); | |
| 756 } | |
| 757 } | |
| 758 | |
| 759 check_cursor_moved(wp); | |
| 760 if (!(wp->w_valid & VALID_CHEIGHT)) | |
| 761 { | |
| 762 if (all_invalid | |
| 763 || i == wp->w_lines_valid | |
| 764 || (i < wp->w_lines_valid | |
| 765 && (!wp->w_lines[i].wl_valid | |
| 766 || wp->w_lines[i].wl_lnum != wp->w_cursor.lnum))) | |
| 767 { | |
| 768 #ifdef FEAT_DIFF | |
| 769 if (wp->w_cursor.lnum == wp->w_topline) | |
| 770 wp->w_cline_height = plines_win_nofill(wp, wp->w_cursor.lnum, | |
| 771 TRUE) + wp->w_topfill; | |
| 772 else | |
| 773 #endif | |
| 774 wp->w_cline_height = plines_win(wp, wp->w_cursor.lnum, TRUE); | |
| 775 #ifdef FEAT_FOLDING | |
| 776 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
| 777 NULL, NULL, TRUE, NULL); | |
| 778 #endif | |
| 779 } | |
| 780 else if (i > wp->w_lines_valid) | |
| 781 { | |
| 782 /* a line that is too long to fit on the last screen line */ | |
| 783 wp->w_cline_height = 0; | |
| 784 #ifdef FEAT_FOLDING | |
| 785 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
| 786 NULL, NULL, TRUE, NULL); | |
| 787 #endif | |
| 788 } | |
| 789 else | |
| 790 { | |
| 791 wp->w_cline_height = wp->w_lines[i].wl_size; | |
| 792 #ifdef FEAT_FOLDING | |
| 793 wp->w_cline_folded = wp->w_lines[i].wl_folded; | |
| 794 #endif | |
| 795 } | |
| 796 } | |
| 797 | |
| 5764 | 798 redraw_for_cursorline(curwin); |
| 7 | 799 wp->w_valid |= VALID_CROW|VALID_CHEIGHT; |
| 800 | |
| 801 } | |
| 802 | |
| 803 /* | |
| 804 * Validate curwin->w_virtcol only. | |
| 805 */ | |
| 806 void | |
|
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|
807 validate_virtcol(void) |
| 7 | 808 { |
| 809 validate_virtcol_win(curwin); | |
| 810 } | |
| 811 | |
| 812 /* | |
| 813 * Validate wp->w_virtcol only. | |
| 814 */ | |
| 815 void | |
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816 validate_virtcol_win(win_T *wp) |
| 7 | 817 { |
| 818 check_cursor_moved(wp); | |
| 819 if (!(wp->w_valid & VALID_VIRTCOL)) | |
| 820 { | |
| 821 getvvcol(wp, &wp->w_cursor, NULL, &(wp->w_virtcol), NULL); | |
| 822 wp->w_valid |= VALID_VIRTCOL; | |
| 740 | 823 #ifdef FEAT_SYN_HL |
| 752 | 824 if (wp->w_p_cuc |
| 825 # ifdef FEAT_INS_EXPAND | |
| 826 && !pum_visible() | |
| 827 # endif | |
| 828 ) | |
| 740 | 829 redraw_win_later(wp, SOME_VALID); |
| 830 #endif | |
| 7 | 831 } |
| 832 } | |
| 833 | |
| 834 /* | |
| 835 * Validate curwin->w_cline_height only. | |
| 836 */ | |
| 837 static void | |
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838 validate_cheight(void) |
| 7 | 839 { |
| 840 check_cursor_moved(curwin); | |
| 841 if (!(curwin->w_valid & VALID_CHEIGHT)) | |
| 842 { | |
| 843 #ifdef FEAT_DIFF | |
| 844 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 845 curwin->w_cline_height = plines_nofill(curwin->w_cursor.lnum) | |
| 846 + curwin->w_topfill; | |
| 847 else | |
| 848 #endif | |
| 849 curwin->w_cline_height = plines(curwin->w_cursor.lnum); | |
| 850 #ifdef FEAT_FOLDING | |
| 851 curwin->w_cline_folded = hasFolding(curwin->w_cursor.lnum, NULL, NULL); | |
| 852 #endif | |
| 853 curwin->w_valid |= VALID_CHEIGHT; | |
| 854 } | |
| 855 } | |
| 856 | |
| 857 /* | |
| 1668 | 858 * Validate w_wcol and w_virtcol only. |
| 7 | 859 */ |
| 860 void | |
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861 validate_cursor_col(void) |
| 7 | 862 { |
| 863 colnr_T off; | |
| 864 colnr_T col; | |
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865 int width; |
| 7 | 866 |
| 867 validate_virtcol(); | |
| 868 if (!(curwin->w_valid & VALID_WCOL)) | |
| 869 { | |
| 870 col = curwin->w_virtcol; | |
| 871 off = curwin_col_off(); | |
| 872 col += off; | |
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873 width = curwin->w_width - off + curwin_col_off2(); |
| 7 | 874 |
| 875 /* long line wrapping, adjust curwin->w_wrow */ | |
| 1668 | 876 if (curwin->w_p_wrap |
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877 && col >= (colnr_T)curwin->w_width |
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878 && width > 0) |
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879 /* use same formula as what is used in curs_columns() */ |
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880 col -= ((col - curwin->w_width) / width + 1) * width; |
| 1668 | 881 if (col > (int)curwin->w_leftcol) |
| 882 col -= curwin->w_leftcol; | |
| 883 else | |
| 884 col = 0; | |
| 7 | 885 curwin->w_wcol = col; |
| 1668 | 886 |
| 7 | 887 curwin->w_valid |= VALID_WCOL; |
| 888 } | |
| 889 } | |
| 890 | |
| 891 /* | |
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892 * Compute offset of a window, occupied by absolute or relative line number, |
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893 * fold column and sign column (these don't move when scrolling horizontally). |
| 7 | 894 */ |
| 895 int | |
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896 win_col_off(win_T *wp) |
| 7 | 897 { |
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898 return (((wp->w_p_nu || wp->w_p_rnu) ? number_width(wp) + 1 : 0) |
| 7 | 899 #ifdef FEAT_CMDWIN |
| 900 + (cmdwin_type == 0 || wp != curwin ? 0 : 1) | |
| 901 #endif | |
| 902 #ifdef FEAT_FOLDING | |
| 903 + wp->w_p_fdc | |
| 904 #endif | |
| 905 #ifdef FEAT_SIGNS | |
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906 + (signcolumn_on(wp) ? 2 : 0) |
| 7 | 907 #endif |
| 908 ); | |
| 909 } | |
| 910 | |
| 911 int | |
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912 curwin_col_off(void) |
| 7 | 913 { |
| 914 return win_col_off(curwin); | |
| 915 } | |
| 916 | |
| 917 /* | |
| 918 * Return the difference in column offset for the second screen line of a | |
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919 * wrapped line. It's 8 if 'number' or 'relativenumber' is on and 'n' is in |
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920 * 'cpoptions'. |
| 7 | 921 */ |
| 922 int | |
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923 win_col_off2(win_T *wp) |
| 7 | 924 { |
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925 if ((wp->w_p_nu || wp->w_p_rnu) && vim_strchr(p_cpo, CPO_NUMCOL) != NULL) |
| 13 | 926 return number_width(wp) + 1; |
| 7 | 927 return 0; |
| 928 } | |
| 929 | |
| 930 int | |
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931 curwin_col_off2(void) |
| 7 | 932 { |
| 933 return win_col_off2(curwin); | |
| 934 } | |
| 935 | |
| 936 /* | |
| 937 * compute curwin->w_wcol and curwin->w_virtcol. | |
| 938 * Also updates curwin->w_wrow and curwin->w_cline_row. | |
| 939 * Also updates curwin->w_leftcol. | |
| 940 */ | |
| 941 void | |
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942 curs_columns( |
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943 int may_scroll) /* when TRUE, may scroll horizontally */ |
| 7 | 944 { |
| 945 int diff; | |
| 946 int extra; /* offset for first screen line */ | |
| 947 int off_left, off_right; | |
| 948 int n; | |
| 949 int p_lines; | |
| 950 int width = 0; | |
| 951 int textwidth; | |
| 952 int new_leftcol; | |
| 953 colnr_T startcol; | |
| 954 colnr_T endcol; | |
| 955 colnr_T prev_skipcol; | |
| 956 | |
| 957 /* | |
| 958 * First make sure that w_topline is valid (after moving the cursor). | |
| 959 */ | |
| 960 update_topline(); | |
| 961 | |
| 962 /* | |
| 963 * Next make sure that w_cline_row is valid. | |
| 964 */ | |
| 965 if (!(curwin->w_valid & VALID_CROW)) | |
| 6441 | 966 curs_rows(curwin); |
| 7 | 967 |
| 968 /* | |
| 969 * Compute the number of virtual columns. | |
| 970 */ | |
| 971 #ifdef FEAT_FOLDING | |
| 972 if (curwin->w_cline_folded) | |
| 973 /* In a folded line the cursor is always in the first column */ | |
| 974 startcol = curwin->w_virtcol = endcol = curwin->w_leftcol; | |
| 975 else | |
| 976 #endif | |
| 977 getvvcol(curwin, &curwin->w_cursor, | |
| 978 &startcol, &(curwin->w_virtcol), &endcol); | |
| 979 | |
| 980 /* remove '$' from change command when cursor moves onto it */ | |
| 981 if (startcol > dollar_vcol) | |
| 3318 | 982 dollar_vcol = -1; |
| 7 | 983 |
| 984 extra = curwin_col_off(); | |
| 985 curwin->w_wcol = curwin->w_virtcol + extra; | |
| 986 endcol += extra; | |
| 987 | |
| 988 /* | |
| 989 * Now compute w_wrow, counting screen lines from w_cline_row. | |
| 990 */ | |
| 991 curwin->w_wrow = curwin->w_cline_row; | |
| 992 | |
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993 textwidth = curwin->w_width - extra; |
| 7 | 994 if (textwidth <= 0) |
| 995 { | |
| 996 /* No room for text, put cursor in last char of window. */ | |
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997 curwin->w_wcol = curwin->w_width - 1; |
| 7 | 998 curwin->w_wrow = curwin->w_height - 1; |
| 999 } | |
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1000 else if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 1001 { |
| 1002 width = textwidth + curwin_col_off2(); | |
| 1003 | |
| 1004 /* long line wrapping, adjust curwin->w_wrow */ | |
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1005 if (curwin->w_wcol >= curwin->w_width) |
| 7 | 1006 { |
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1007 /* this same formula is used in validate_cursor_col() */ |
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1008 n = (curwin->w_wcol - curwin->w_width) / width + 1; |
| 7 | 1009 curwin->w_wcol -= n * width; |
| 1010 curwin->w_wrow += n; | |
| 1011 | |
| 1012 #ifdef FEAT_LINEBREAK | |
| 1013 /* When cursor wraps to first char of next line in Insert | |
| 1014 * mode, the 'showbreak' string isn't shown, backup to first | |
| 1015 * column */ | |
| 1016 if (*p_sbr && *ml_get_cursor() == NUL | |
| 1017 && curwin->w_wcol == (int)vim_strsize(p_sbr)) | |
| 1018 curwin->w_wcol = 0; | |
| 1019 #endif | |
| 1020 } | |
| 1021 } | |
| 1022 | |
| 1023 /* No line wrapping: compute curwin->w_leftcol if scrolling is on and line | |
| 1024 * is not folded. | |
| 1025 * If scrolling is off, curwin->w_leftcol is assumed to be 0 */ | |
| 3263 | 1026 else if (may_scroll |
| 7 | 1027 #ifdef FEAT_FOLDING |
| 1028 && !curwin->w_cline_folded | |
| 1029 #endif | |
| 1030 ) | |
| 1031 { | |
| 1032 /* | |
| 1033 * If Cursor is left of the screen, scroll rightwards. | |
| 1034 * If Cursor is right of the screen, scroll leftwards | |
| 1035 * If we get closer to the edge than 'sidescrolloff', scroll a little | |
| 1036 * extra | |
| 1037 */ | |
| 1038 off_left = (int)startcol - (int)curwin->w_leftcol - p_siso; | |
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1039 off_right = (int)endcol - (int)(curwin->w_leftcol + curwin->w_width |
| 7 | 1040 - p_siso) + 1; |
| 1041 if (off_left < 0 || off_right > 0) | |
| 1042 { | |
| 1043 if (off_left < 0) | |
| 1044 diff = -off_left; | |
| 1045 else | |
| 1046 diff = off_right; | |
| 1047 | |
| 1048 /* When far off or not enough room on either side, put cursor in | |
| 1049 * middle of window. */ | |
| 1050 if (p_ss == 0 || diff >= textwidth / 2 || off_right >= off_left) | |
| 1051 new_leftcol = curwin->w_wcol - extra - textwidth / 2; | |
| 1052 else | |
| 1053 { | |
| 1054 if (diff < p_ss) | |
| 1055 diff = p_ss; | |
| 1056 if (off_left < 0) | |
| 1057 new_leftcol = curwin->w_leftcol - diff; | |
| 1058 else | |
| 1059 new_leftcol = curwin->w_leftcol + diff; | |
| 1060 } | |
| 1061 if (new_leftcol < 0) | |
| 1062 new_leftcol = 0; | |
| 1063 if (new_leftcol != (int)curwin->w_leftcol) | |
| 1064 { | |
| 1065 curwin->w_leftcol = new_leftcol; | |
| 1066 /* screen has to be redrawn with new curwin->w_leftcol */ | |
| 1067 redraw_later(NOT_VALID); | |
| 1068 } | |
| 1069 } | |
| 1070 curwin->w_wcol -= curwin->w_leftcol; | |
| 1071 } | |
| 1072 else if (curwin->w_wcol > (int)curwin->w_leftcol) | |
| 1073 curwin->w_wcol -= curwin->w_leftcol; | |
| 1074 else | |
| 1075 curwin->w_wcol = 0; | |
| 1076 | |
| 1077 #ifdef FEAT_DIFF | |
| 1078 /* Skip over filler lines. At the top use w_topfill, there | |
| 1079 * may be some filler lines above the window. */ | |
| 1080 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 1081 curwin->w_wrow += curwin->w_topfill; | |
| 1082 else | |
| 1083 curwin->w_wrow += diff_check_fill(curwin, curwin->w_cursor.lnum); | |
| 1084 #endif | |
| 1085 | |
| 1086 prev_skipcol = curwin->w_skipcol; | |
| 1087 | |
| 1088 p_lines = 0; | |
| 1089 if ((curwin->w_wrow >= curwin->w_height | |
| 1090 || ((prev_skipcol > 0 | |
| 1091 || curwin->w_wrow + p_so >= curwin->w_height) | |
| 1092 && (p_lines = | |
| 1093 #ifdef FEAT_DIFF | |
| 1094 plines_win_nofill | |
| 1095 #else | |
| 1096 plines_win | |
| 1097 #endif | |
| 1098 (curwin, curwin->w_cursor.lnum, FALSE)) | |
| 1099 - 1 >= curwin->w_height)) | |
| 1100 && curwin->w_height != 0 | |
| 1101 && curwin->w_cursor.lnum == curwin->w_topline | |
| 1102 && width > 0 | |
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1103 && curwin->w_width != 0) |
| 7 | 1104 { |
| 1105 /* Cursor past end of screen. Happens with a single line that does | |
| 1106 * not fit on screen. Find a skipcol to show the text around the | |
| 1107 * cursor. Avoid scrolling all the time. compute value of "extra": | |
| 1108 * 1: Less than "p_so" lines above | |
| 1109 * 2: Less than "p_so" lines below | |
| 1110 * 3: both of them */ | |
| 1111 extra = 0; | |
| 1112 if (curwin->w_skipcol + p_so * width > curwin->w_virtcol) | |
| 1113 extra = 1; | |
| 1114 /* Compute last display line of the buffer line that we want at the | |
| 1115 * bottom of the window. */ | |
| 1116 if (p_lines == 0) | |
| 1117 p_lines = plines_win(curwin, curwin->w_cursor.lnum, FALSE); | |
| 1118 --p_lines; | |
| 1119 if (p_lines > curwin->w_wrow + p_so) | |
| 1120 n = curwin->w_wrow + p_so; | |
| 1121 else | |
| 1122 n = p_lines; | |
| 1123 if ((colnr_T)n >= curwin->w_height + curwin->w_skipcol / width) | |
| 1124 extra += 2; | |
| 1125 | |
| 1126 if (extra == 3 || p_lines < p_so * 2) | |
| 1127 { | |
| 1128 /* not enough room for 'scrolloff', put cursor in the middle */ | |
| 1129 n = curwin->w_virtcol / width; | |
| 1130 if (n > curwin->w_height / 2) | |
| 1131 n -= curwin->w_height / 2; | |
| 1132 else | |
| 1133 n = 0; | |
| 1134 /* don't skip more than necessary */ | |
| 1135 if (n > p_lines - curwin->w_height + 1) | |
| 1136 n = p_lines - curwin->w_height + 1; | |
| 1137 curwin->w_skipcol = n * width; | |
| 1138 } | |
| 1139 else if (extra == 1) | |
| 1140 { | |
| 1141 /* less then 'scrolloff' lines above, decrease skipcol */ | |
| 1142 extra = (curwin->w_skipcol + p_so * width - curwin->w_virtcol | |
| 1143 + width - 1) / width; | |
| 1144 if (extra > 0) | |
| 1145 { | |
| 1146 if ((colnr_T)(extra * width) > curwin->w_skipcol) | |
| 1147 extra = curwin->w_skipcol / width; | |
| 1148 curwin->w_skipcol -= extra * width; | |
| 1149 } | |
| 1150 } | |
| 1151 else if (extra == 2) | |
| 1152 { | |
| 1153 /* less then 'scrolloff' lines below, increase skipcol */ | |
| 1154 endcol = (n - curwin->w_height + 1) * width; | |
| 1155 while (endcol > curwin->w_virtcol) | |
| 1156 endcol -= width; | |
| 1157 if (endcol > curwin->w_skipcol) | |
| 1158 curwin->w_skipcol = endcol; | |
| 1159 } | |
| 1160 | |
| 1161 curwin->w_wrow -= curwin->w_skipcol / width; | |
| 1162 if (curwin->w_wrow >= curwin->w_height) | |
| 1163 { | |
| 1164 /* small window, make sure cursor is in it */ | |
| 1165 extra = curwin->w_wrow - curwin->w_height + 1; | |
| 1166 curwin->w_skipcol += extra * width; | |
| 1167 curwin->w_wrow -= extra; | |
| 1168 } | |
| 1169 | |
| 1170 extra = ((int)prev_skipcol - (int)curwin->w_skipcol) / width; | |
| 1171 if (extra > 0) | |
| 1172 win_ins_lines(curwin, 0, extra, FALSE, FALSE); | |
| 1173 else if (extra < 0) | |
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1174 win_del_lines(curwin, 0, -extra, FALSE, FALSE, 0); |
| 7 | 1175 } |
| 1176 else | |
| 1177 curwin->w_skipcol = 0; | |
| 1178 if (prev_skipcol != curwin->w_skipcol) | |
| 1179 redraw_later(NOT_VALID); | |
| 1180 | |
| 740 | 1181 #ifdef FEAT_SYN_HL |
| 5749 | 1182 /* Redraw when w_virtcol changes and 'cursorcolumn' is set */ |
| 1183 if (curwin->w_p_cuc && (curwin->w_valid & VALID_VIRTCOL) == 0 | |
| 1184 # ifdef FEAT_INS_EXPAND | |
| 1185 && !pum_visible() | |
| 1186 # endif | |
| 1187 ) | |
| 1188 redraw_later(SOME_VALID); | |
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1189 #endif |
| 740 | 1190 |
| 7 | 1191 curwin->w_valid |= VALID_WCOL|VALID_WROW|VALID_VIRTCOL; |
| 1192 } | |
| 1193 | |
| 1194 /* | |
| 1195 * Scroll the current window down by "line_count" logical lines. "CTRL-Y" | |
| 1196 */ | |
| 1197 void | |
|
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1198 scrolldown( |
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1199 long line_count, |
|
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1200 int byfold UNUSED) /* TRUE: count a closed fold as one line */ |
| 7 | 1201 { |
| 1202 long done = 0; /* total # of physical lines done */ | |
| 1203 int wrow; | |
| 1204 int moved = FALSE; | |
| 1205 | |
| 1206 #ifdef FEAT_FOLDING | |
| 1207 linenr_T first; | |
| 1208 | |
| 1209 /* Make sure w_topline is at the first of a sequence of folded lines. */ | |
| 1210 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 1211 #endif | |
| 1212 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1213 while (line_count-- > 0) | |
| 1214 { | |
| 1215 #ifdef FEAT_DIFF | |
| 1980 | 1216 if (curwin->w_topfill < diff_check(curwin, curwin->w_topline) |
| 1217 && curwin->w_topfill < curwin->w_height - 1) | |
| 7 | 1218 { |
| 1219 ++curwin->w_topfill; | |
| 1220 ++done; | |
| 1221 } | |
| 1222 else | |
| 1223 #endif | |
| 1224 { | |
| 1225 if (curwin->w_topline == 1) | |
| 1226 break; | |
| 1227 --curwin->w_topline; | |
| 1228 #ifdef FEAT_DIFF | |
| 1229 curwin->w_topfill = 0; | |
| 1230 #endif | |
| 1231 #ifdef FEAT_FOLDING | |
| 1232 /* A sequence of folded lines only counts for one logical line */ | |
| 1233 if (hasFolding(curwin->w_topline, &first, NULL)) | |
| 1234 { | |
| 1235 ++done; | |
| 1236 if (!byfold) | |
| 1237 line_count -= curwin->w_topline - first - 1; | |
| 1238 curwin->w_botline -= curwin->w_topline - first; | |
| 1239 curwin->w_topline = first; | |
| 1240 } | |
| 1241 else | |
| 1242 #endif | |
|
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1243 done += PLINES_NOFILL(curwin->w_topline); |
| 7 | 1244 } |
| 1245 --curwin->w_botline; /* approximate w_botline */ | |
| 1246 invalidate_botline(); | |
| 1247 } | |
| 1248 curwin->w_wrow += done; /* keep w_wrow updated */ | |
| 1249 curwin->w_cline_row += done; /* keep w_cline_row updated */ | |
| 1250 | |
| 1251 #ifdef FEAT_DIFF | |
| 1252 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 1253 curwin->w_cline_row = 0; | |
| 1254 check_topfill(curwin, TRUE); | |
| 1255 #endif | |
| 1256 | |
| 1257 /* | |
| 1258 * Compute the row number of the last row of the cursor line | |
| 1259 * and move the cursor onto the displayed part of the window. | |
| 1260 */ | |
| 1261 wrow = curwin->w_wrow; | |
|
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1262 if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 1263 { |
| 1264 validate_virtcol(); | |
| 1265 validate_cheight(); | |
| 1266 wrow += curwin->w_cline_height - 1 - | |
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1267 curwin->w_virtcol / curwin->w_width; |
| 7 | 1268 } |
| 1269 while (wrow >= curwin->w_height && curwin->w_cursor.lnum > 1) | |
| 1270 { | |
| 1271 #ifdef FEAT_FOLDING | |
| 1272 if (hasFolding(curwin->w_cursor.lnum, &first, NULL)) | |
| 1273 { | |
| 1274 --wrow; | |
| 1275 if (first == 1) | |
| 1276 curwin->w_cursor.lnum = 1; | |
| 1277 else | |
| 1278 curwin->w_cursor.lnum = first - 1; | |
| 1279 } | |
| 1280 else | |
| 1281 #endif | |
| 1282 wrow -= plines(curwin->w_cursor.lnum--); | |
| 1283 curwin->w_valid &= | |
| 1284 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
| 1285 moved = TRUE; | |
| 1286 } | |
| 1287 if (moved) | |
| 1288 { | |
| 1289 #ifdef FEAT_FOLDING | |
| 1290 /* Move cursor to first line of closed fold. */ | |
| 1291 foldAdjustCursor(); | |
| 1292 #endif | |
| 1293 coladvance(curwin->w_curswant); | |
| 1294 } | |
| 1295 } | |
| 1296 | |
| 1297 /* | |
| 1298 * Scroll the current window up by "line_count" logical lines. "CTRL-E" | |
| 1299 */ | |
| 1300 void | |
|
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1301 scrollup( |
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1302 long line_count, |
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1303 int byfold UNUSED) /* TRUE: count a closed fold as one line */ |
| 7 | 1304 { |
| 1305 #if defined(FEAT_FOLDING) || defined(FEAT_DIFF) | |
| 1306 linenr_T lnum; | |
| 1307 | |
| 1308 if ( | |
| 1309 # ifdef FEAT_FOLDING | |
| 1310 (byfold && hasAnyFolding(curwin)) | |
| 1311 # ifdef FEAT_DIFF | |
| 1312 || | |
| 1313 # endif | |
| 1314 # endif | |
| 1315 # ifdef FEAT_DIFF | |
| 1316 curwin->w_p_diff | |
| 1317 # endif | |
| 1318 ) | |
| 1319 { | |
| 1320 /* count each sequence of folded lines as one logical line */ | |
| 1321 lnum = curwin->w_topline; | |
| 1322 while (line_count--) | |
| 1323 { | |
| 1324 # ifdef FEAT_DIFF | |
| 1325 if (curwin->w_topfill > 0) | |
| 1326 --curwin->w_topfill; | |
| 1327 else | |
| 1328 # endif | |
| 1329 { | |
| 1330 # ifdef FEAT_FOLDING | |
| 1331 if (byfold) | |
| 1332 (void)hasFolding(lnum, NULL, &lnum); | |
| 1333 # endif | |
| 1334 if (lnum >= curbuf->b_ml.ml_line_count) | |
| 1335 break; | |
| 1336 ++lnum; | |
| 1337 # ifdef FEAT_DIFF | |
| 1338 curwin->w_topfill = diff_check_fill(curwin, lnum); | |
| 1339 # endif | |
| 1340 } | |
| 1341 } | |
| 1342 /* approximate w_botline */ | |
| 1343 curwin->w_botline += lnum - curwin->w_topline; | |
| 1344 curwin->w_topline = lnum; | |
| 1345 } | |
| 1346 else | |
| 1347 #endif | |
| 1348 { | |
| 1349 curwin->w_topline += line_count; | |
| 1350 curwin->w_botline += line_count; /* approximate w_botline */ | |
| 1351 } | |
| 1352 | |
| 1353 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
| 1354 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
| 1355 if (curwin->w_botline > curbuf->b_ml.ml_line_count + 1) | |
| 1356 curwin->w_botline = curbuf->b_ml.ml_line_count + 1; | |
| 1357 | |
| 1358 #ifdef FEAT_DIFF | |
| 1359 check_topfill(curwin, FALSE); | |
| 1360 #endif | |
| 1361 | |
| 1362 #ifdef FEAT_FOLDING | |
| 1363 if (hasAnyFolding(curwin)) | |
| 1364 /* Make sure w_topline is at the first of a sequence of folded lines. */ | |
| 1365 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 1366 #endif | |
| 1367 | |
| 1368 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1369 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 1370 { | |
| 1371 curwin->w_cursor.lnum = curwin->w_topline; | |
| 1372 curwin->w_valid &= | |
| 1373 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
| 1374 coladvance(curwin->w_curswant); | |
| 1375 } | |
| 1376 } | |
| 1377 | |
| 1378 #ifdef FEAT_DIFF | |
| 1379 /* | |
| 1380 * Don't end up with too many filler lines in the window. | |
| 1381 */ | |
| 1382 void | |
|
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1383 check_topfill( |
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1384 win_T *wp, |
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1385 int down) /* when TRUE scroll down when not enough space */ |
| 7 | 1386 { |
| 1387 int n; | |
| 1388 | |
| 1389 if (wp->w_topfill > 0) | |
| 1390 { | |
| 1391 n = plines_win_nofill(wp, wp->w_topline, TRUE); | |
| 1392 if (wp->w_topfill + n > wp->w_height) | |
| 1393 { | |
| 1394 if (down && wp->w_topline > 1) | |
| 1395 { | |
| 1396 --wp->w_topline; | |
| 1397 wp->w_topfill = 0; | |
| 1398 } | |
| 1399 else | |
| 1400 { | |
| 1401 wp->w_topfill = wp->w_height - n; | |
| 1402 if (wp->w_topfill < 0) | |
| 1403 wp->w_topfill = 0; | |
| 1404 } | |
| 1405 } | |
| 1406 } | |
| 1407 } | |
| 1408 | |
| 1409 /* | |
| 1410 * Use as many filler lines as possible for w_topline. Make sure w_topline | |
| 1411 * is still visible. | |
| 1412 */ | |
| 1413 static void | |
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1414 max_topfill(void) |
| 7 | 1415 { |
| 1416 int n; | |
| 1417 | |
| 1418 n = plines_nofill(curwin->w_topline); | |
| 1419 if (n >= curwin->w_height) | |
| 1420 curwin->w_topfill = 0; | |
| 1421 else | |
| 1422 { | |
| 1423 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 1424 if (curwin->w_topfill + n > curwin->w_height) | |
| 1425 curwin->w_topfill = curwin->w_height - n; | |
| 1426 } | |
| 1427 } | |
| 1428 #endif | |
| 1429 | |
| 1430 #if defined(FEAT_INS_EXPAND) || defined(PROTO) | |
| 1431 /* | |
| 1432 * Scroll the screen one line down, but don't do it if it would move the | |
| 1433 * cursor off the screen. | |
| 1434 */ | |
| 1435 void | |
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1436 scrolldown_clamp(void) |
| 7 | 1437 { |
| 1438 int end_row; | |
| 1439 #ifdef FEAT_DIFF | |
| 1440 int can_fill = (curwin->w_topfill | |
| 1441 < diff_check_fill(curwin, curwin->w_topline)); | |
| 1442 #endif | |
| 1443 | |
| 1444 if (curwin->w_topline <= 1 | |
| 1445 #ifdef FEAT_DIFF | |
| 1446 && !can_fill | |
| 1447 #endif | |
| 1448 ) | |
| 1449 return; | |
| 1450 | |
| 1451 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1452 | |
| 1453 /* | |
| 1454 * Compute the row number of the last row of the cursor line | |
| 1455 * and make sure it doesn't go off the screen. Make sure the cursor | |
| 1456 * doesn't go past 'scrolloff' lines from the screen end. | |
| 1457 */ | |
| 1458 end_row = curwin->w_wrow; | |
| 1459 #ifdef FEAT_DIFF | |
| 1460 if (can_fill) | |
| 1461 ++end_row; | |
| 1462 else | |
| 1463 end_row += plines_nofill(curwin->w_topline - 1); | |
| 1464 #else | |
| 1465 end_row += plines(curwin->w_topline - 1); | |
| 1466 #endif | |
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1467 if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 1468 { |
| 1469 validate_cheight(); | |
| 1470 validate_virtcol(); | |
| 1471 end_row += curwin->w_cline_height - 1 - | |
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1472 curwin->w_virtcol / curwin->w_width; |
| 7 | 1473 } |
| 1474 if (end_row < curwin->w_height - p_so) | |
| 1475 { | |
| 1476 #ifdef FEAT_DIFF | |
| 1477 if (can_fill) | |
| 1478 { | |
| 1479 ++curwin->w_topfill; | |
| 1480 check_topfill(curwin, TRUE); | |
| 1481 } | |
| 1482 else | |
| 1483 { | |
| 1484 --curwin->w_topline; | |
| 1485 curwin->w_topfill = 0; | |
| 1486 } | |
| 1487 #else | |
| 1488 --curwin->w_topline; | |
| 1489 #endif | |
| 1490 #ifdef FEAT_FOLDING | |
| 7009 | 1491 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
| 7 | 1492 #endif |
| 1493 --curwin->w_botline; /* approximate w_botline */ | |
| 1494 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1495 } | |
| 1496 } | |
| 1497 | |
| 1498 /* | |
| 1499 * Scroll the screen one line up, but don't do it if it would move the cursor | |
| 1500 * off the screen. | |
| 1501 */ | |
| 1502 void | |
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1503 scrollup_clamp(void) |
| 7 | 1504 { |
| 1505 int start_row; | |
| 1506 | |
| 1507 if (curwin->w_topline == curbuf->b_ml.ml_line_count | |
| 1508 #ifdef FEAT_DIFF | |
| 1509 && curwin->w_topfill == 0 | |
| 1510 #endif | |
| 1511 ) | |
| 1512 return; | |
| 1513 | |
| 1514 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1515 | |
| 1516 /* | |
| 1517 * Compute the row number of the first row of the cursor line | |
| 1518 * and make sure it doesn't go off the screen. Make sure the cursor | |
| 1519 * doesn't go before 'scrolloff' lines from the screen start. | |
| 1520 */ | |
| 1521 #ifdef FEAT_DIFF | |
| 1522 start_row = curwin->w_wrow - plines_nofill(curwin->w_topline) | |
| 1523 - curwin->w_topfill; | |
| 1524 #else | |
| 1525 start_row = curwin->w_wrow - plines(curwin->w_topline); | |
| 1526 #endif | |
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1527 if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 1528 { |
| 1529 validate_virtcol(); | |
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1530 start_row -= curwin->w_virtcol / curwin->w_width; |
| 7 | 1531 } |
| 1532 if (start_row >= p_so) | |
| 1533 { | |
| 1534 #ifdef FEAT_DIFF | |
| 1535 if (curwin->w_topfill > 0) | |
| 1536 --curwin->w_topfill; | |
| 1537 else | |
| 1538 #endif | |
| 36 | 1539 { |
| 1540 #ifdef FEAT_FOLDING | |
| 1541 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
| 1542 #endif | |
| 7 | 1543 ++curwin->w_topline; |
| 36 | 1544 } |
| 7 | 1545 ++curwin->w_botline; /* approximate w_botline */ |
| 1546 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1547 } | |
| 1548 } | |
| 1549 #endif /* FEAT_INS_EXPAND */ | |
| 1550 | |
| 1551 /* | |
| 1552 * Add one line above "lp->lnum". This can be a filler line, a closed fold or | |
| 1553 * a (wrapped) text line. Uses and sets "lp->fill". | |
| 1554 * Returns the height of the added line in "lp->height". | |
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1555 * Lines above the first one are incredibly high: MAXCOL. |
| 7 | 1556 */ |
| 1557 static void | |
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1558 topline_back(lineoff_T *lp) |
| 7 | 1559 { |
| 1560 #ifdef FEAT_DIFF | |
| 1561 if (lp->fill < diff_check_fill(curwin, lp->lnum)) | |
| 1562 { | |
| 1563 /* Add a filler line. */ | |
| 1564 ++lp->fill; | |
| 1565 lp->height = 1; | |
| 1566 } | |
| 1567 else | |
| 1568 #endif | |
| 1569 { | |
| 1570 --lp->lnum; | |
| 1571 #ifdef FEAT_DIFF | |
| 1572 lp->fill = 0; | |
| 1573 #endif | |
| 1574 if (lp->lnum < 1) | |
| 1575 lp->height = MAXCOL; | |
| 1576 else | |
| 1577 #ifdef FEAT_FOLDING | |
| 1578 if (hasFolding(lp->lnum, &lp->lnum, NULL)) | |
| 1579 /* Add a closed fold */ | |
| 1580 lp->height = 1; | |
| 1581 else | |
| 1582 #endif | |
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1583 lp->height = PLINES_NOFILL(lp->lnum); |
| 7 | 1584 } |
| 1585 } | |
| 1586 | |
| 1587 /* | |
| 1588 * Add one line below "lp->lnum". This can be a filler line, a closed fold or | |
| 1589 * a (wrapped) text line. Uses and sets "lp->fill". | |
| 1590 * Returns the height of the added line in "lp->height". | |
| 1591 * Lines below the last one are incredibly high. | |
| 1592 */ | |
| 1593 static void | |
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1594 botline_forw(lineoff_T *lp) |
| 7 | 1595 { |
| 1596 #ifdef FEAT_DIFF | |
| 1597 if (lp->fill < diff_check_fill(curwin, lp->lnum + 1)) | |
| 1598 { | |
| 1599 /* Add a filler line. */ | |
| 1600 ++lp->fill; | |
| 1601 lp->height = 1; | |
| 1602 } | |
| 1603 else | |
| 1604 #endif | |
| 1605 { | |
| 1606 ++lp->lnum; | |
| 1607 #ifdef FEAT_DIFF | |
| 1608 lp->fill = 0; | |
| 1609 #endif | |
| 1610 if (lp->lnum > curbuf->b_ml.ml_line_count) | |
| 1611 lp->height = MAXCOL; | |
| 1612 else | |
| 1613 #ifdef FEAT_FOLDING | |
| 1614 if (hasFolding(lp->lnum, NULL, &lp->lnum)) | |
| 1615 /* Add a closed fold */ | |
| 1616 lp->height = 1; | |
| 1617 else | |
| 1618 #endif | |
| 1619 { | |
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1620 lp->height = PLINES_NOFILL(lp->lnum); |
| 7 | 1621 } |
| 1622 } | |
| 1623 } | |
| 1624 | |
| 1625 #ifdef FEAT_DIFF | |
| 1626 /* | |
| 1627 * Switch from including filler lines below lp->lnum to including filler | |
| 1628 * lines above loff.lnum + 1. This keeps pointing to the same line. | |
| 1629 * When there are no filler lines nothing changes. | |
| 1630 */ | |
| 1631 static void | |
|
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1632 botline_topline(lineoff_T *lp) |
| 7 | 1633 { |
| 1634 if (lp->fill > 0) | |
| 1635 { | |
| 1636 ++lp->lnum; | |
| 1637 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
| 1638 } | |
| 1639 } | |
| 1640 | |
| 1641 /* | |
| 1642 * Switch from including filler lines above lp->lnum to including filler | |
| 1643 * lines below loff.lnum - 1. This keeps pointing to the same line. | |
| 1644 * When there are no filler lines nothing changes. | |
| 1645 */ | |
| 1646 static void | |
|
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1647 topline_botline(lineoff_T *lp) |
| 7 | 1648 { |
| 1649 if (lp->fill > 0) | |
| 1650 { | |
| 1651 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
| 1652 --lp->lnum; | |
| 1653 } | |
| 1654 } | |
| 1655 #endif | |
| 1656 | |
| 1657 /* | |
| 1658 * Recompute topline to put the cursor at the top of the window. | |
| 1659 * Scroll at least "min_scroll" lines. | |
| 1660 * If "always" is TRUE, always set topline (for "zt"). | |
| 1661 */ | |
| 1662 void | |
|
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1663 scroll_cursor_top(int min_scroll, int always) |
| 7 | 1664 { |
| 1665 int scrolled = 0; | |
| 1666 int extra = 0; | |
| 1667 int used; | |
| 1668 int i; | |
| 1669 linenr_T top; /* just above displayed lines */ | |
| 1670 linenr_T bot; /* just below displayed lines */ | |
| 1671 linenr_T old_topline = curwin->w_topline; | |
| 1672 #ifdef FEAT_DIFF | |
| 1673 linenr_T old_topfill = curwin->w_topfill; | |
| 1674 #endif | |
| 1675 linenr_T new_topline; | |
| 1676 int off = p_so; | |
| 1677 | |
| 1678 #ifdef FEAT_MOUSE | |
| 1679 if (mouse_dragging > 0) | |
| 1680 off = mouse_dragging - 1; | |
| 1681 #endif | |
| 1682 | |
| 1683 /* | |
| 1684 * Decrease topline until: | |
| 1685 * - it has become 1 | |
| 1686 * - (part of) the cursor line is moved off the screen or | |
| 1687 * - moved at least 'scrolljump' lines and | |
| 1688 * - at least 'scrolloff' lines above and below the cursor | |
| 1689 */ | |
| 1690 validate_cheight(); | |
|
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1691 used = curwin->w_cline_height; /* includes filler lines above */ |
| 7 | 1692 if (curwin->w_cursor.lnum < curwin->w_topline) |
| 1693 scrolled = used; | |
| 1694 | |
| 1695 #ifdef FEAT_FOLDING | |
| 1696 if (hasFolding(curwin->w_cursor.lnum, &top, &bot)) | |
| 1697 { | |
| 1698 --top; | |
| 1699 ++bot; | |
| 1700 } | |
| 1701 else | |
| 1702 #endif | |
| 1703 { | |
| 1704 top = curwin->w_cursor.lnum - 1; | |
| 1705 bot = curwin->w_cursor.lnum + 1; | |
| 1706 } | |
| 1707 new_topline = top + 1; | |
| 1708 | |
| 1709 #ifdef FEAT_DIFF | |
|
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1710 /* "used" already contains the number of filler lines above, don't add it |
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1711 * again. |
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1712 * Hide filler lines above cursor line by adding them to "extra". */ |
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1713 extra += diff_check_fill(curwin, curwin->w_cursor.lnum); |
| 7 | 1714 #endif |
| 1715 | |
| 1716 /* | |
| 1717 * Check if the lines from "top" to "bot" fit in the window. If they do, | |
| 1718 * set new_topline and advance "top" and "bot" to include more lines. | |
| 1719 */ | |
| 1720 while (top > 0) | |
| 1721 { | |
| 1722 #ifdef FEAT_FOLDING | |
| 1723 if (hasFolding(top, &top, NULL)) | |
| 1724 /* count one logical line for a sequence of folded lines */ | |
| 1725 i = 1; | |
| 1726 else | |
| 1727 #endif | |
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1728 i = PLINES_NOFILL(top); |
| 7 | 1729 used += i; |
| 1730 if (extra + i <= off && bot < curbuf->b_ml.ml_line_count) | |
| 1731 { | |
| 1732 #ifdef FEAT_FOLDING | |
| 1733 if (hasFolding(bot, NULL, &bot)) | |
| 1734 /* count one logical line for a sequence of folded lines */ | |
| 1735 ++used; | |
| 1736 else | |
| 1737 #endif | |
| 1738 used += plines(bot); | |
| 1739 } | |
| 1740 if (used > curwin->w_height) | |
| 1741 break; | |
| 1742 if (top < curwin->w_topline) | |
| 1743 scrolled += i; | |
| 1744 | |
| 1745 /* | |
| 1746 * If scrolling is needed, scroll at least 'sj' lines. | |
| 1747 */ | |
| 1748 if ((new_topline >= curwin->w_topline || scrolled > min_scroll) | |
| 1749 && extra >= off) | |
| 1750 break; | |
| 1751 | |
| 1752 extra += i; | |
| 1753 new_topline = top; | |
| 1754 --top; | |
| 1755 ++bot; | |
| 1756 } | |
| 1757 | |
| 1758 /* | |
| 1759 * If we don't have enough space, put cursor in the middle. | |
| 1760 * This makes sure we get the same position when using "k" and "j" | |
| 1761 * in a small window. | |
| 1762 */ | |
| 1763 if (used > curwin->w_height) | |
| 1764 scroll_cursor_halfway(FALSE); | |
| 1765 else | |
| 1766 { | |
| 1767 /* | |
| 1768 * If "always" is FALSE, only adjust topline to a lower value, higher | |
| 1769 * value may happen with wrapping lines | |
| 1770 */ | |
| 1771 if (new_topline < curwin->w_topline || always) | |
| 1772 curwin->w_topline = new_topline; | |
| 1773 if (curwin->w_topline > curwin->w_cursor.lnum) | |
| 1774 curwin->w_topline = curwin->w_cursor.lnum; | |
| 1775 #ifdef FEAT_DIFF | |
| 1776 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 1777 if (curwin->w_topfill > 0 && extra > off) | |
| 1778 { | |
| 1779 curwin->w_topfill -= extra - off; | |
| 1780 if (curwin->w_topfill < 0) | |
| 1781 curwin->w_topfill = 0; | |
| 1782 } | |
| 1783 check_topfill(curwin, FALSE); | |
| 1784 #endif | |
| 1785 if (curwin->w_topline != old_topline | |
| 1786 #ifdef FEAT_DIFF | |
| 1787 || curwin->w_topfill != old_topfill | |
| 1788 #endif | |
| 1789 ) | |
| 1790 curwin->w_valid &= | |
| 1791 ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 1792 curwin->w_valid |= VALID_TOPLINE; | |
| 1793 } | |
| 1794 } | |
| 1795 | |
| 1796 /* | |
| 1797 * Set w_empty_rows and w_filler_rows for window "wp", having used up "used" | |
| 1798 * screen lines for text lines. | |
| 1799 */ | |
| 1800 void | |
|
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1801 set_empty_rows(win_T *wp, int used) |
| 7 | 1802 { |
| 1803 #ifdef FEAT_DIFF | |
| 1804 wp->w_filler_rows = 0; | |
| 1805 #endif | |
| 1806 if (used == 0) | |
| 1807 wp->w_empty_rows = 0; /* single line that doesn't fit */ | |
| 1808 else | |
| 1809 { | |
| 1810 wp->w_empty_rows = wp->w_height - used; | |
| 1811 #ifdef FEAT_DIFF | |
| 1812 if (wp->w_botline <= wp->w_buffer->b_ml.ml_line_count) | |
| 1813 { | |
| 1814 wp->w_filler_rows = diff_check_fill(wp, wp->w_botline); | |
| 1815 if (wp->w_empty_rows > wp->w_filler_rows) | |
| 1816 wp->w_empty_rows -= wp->w_filler_rows; | |
| 1817 else | |
| 1818 { | |
| 1819 wp->w_filler_rows = wp->w_empty_rows; | |
| 1820 wp->w_empty_rows = 0; | |
| 1821 } | |
| 1822 } | |
| 1823 #endif | |
| 1824 } | |
| 1825 } | |
| 1826 | |
| 1827 /* | |
| 1828 * Recompute topline to put the cursor at the bottom of the window. | |
| 1829 * Scroll at least "min_scroll" lines. | |
| 1830 * If "set_topbot" is TRUE, set topline and botline first (for "zb"). | |
| 1831 * This is messy stuff!!! | |
| 1832 */ | |
| 1833 void | |
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1834 scroll_cursor_bot(int min_scroll, int set_topbot) |
| 7 | 1835 { |
| 1836 int used; | |
| 1837 int scrolled = 0; | |
| 1838 int extra = 0; | |
| 1839 int i; | |
| 1840 linenr_T line_count; | |
| 1841 linenr_T old_topline = curwin->w_topline; | |
| 1842 lineoff_T loff; | |
| 1843 lineoff_T boff; | |
| 1844 #ifdef FEAT_DIFF | |
| 1845 int old_topfill = curwin->w_topfill; | |
| 1846 int fill_below_window; | |
| 1847 #endif | |
| 1848 linenr_T old_botline = curwin->w_botline; | |
| 1849 linenr_T old_valid = curwin->w_valid; | |
| 1850 int old_empty_rows = curwin->w_empty_rows; | |
| 1851 linenr_T cln; /* Cursor Line Number */ | |
| 1852 | |
| 1853 cln = curwin->w_cursor.lnum; | |
| 1854 if (set_topbot) | |
| 1855 { | |
| 1856 used = 0; | |
| 1857 curwin->w_botline = cln + 1; | |
| 1858 #ifdef FEAT_DIFF | |
| 1859 loff.fill = 0; | |
| 1860 #endif | |
| 1861 for (curwin->w_topline = curwin->w_botline; | |
| 1862 curwin->w_topline > 1; | |
| 1863 curwin->w_topline = loff.lnum) | |
| 1864 { | |
| 1865 loff.lnum = curwin->w_topline; | |
| 1866 topline_back(&loff); | |
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1867 if (loff.height == MAXCOL || used + loff.height > curwin->w_height) |
| 7 | 1868 break; |
| 1869 used += loff.height; | |
| 1870 #ifdef FEAT_DIFF | |
| 1871 curwin->w_topfill = loff.fill; | |
| 1872 #endif | |
| 1873 } | |
| 1874 set_empty_rows(curwin, used); | |
| 1875 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 1876 if (curwin->w_topline != old_topline | |
| 1877 #ifdef FEAT_DIFF | |
| 1878 || curwin->w_topfill != old_topfill | |
| 1879 #endif | |
| 1880 ) | |
| 1881 curwin->w_valid &= ~(VALID_WROW|VALID_CROW); | |
| 1882 } | |
| 1883 else | |
| 1884 validate_botline(); | |
| 1885 | |
| 1886 /* The lines of the cursor line itself are always used. */ | |
| 1887 #ifdef FEAT_DIFF | |
| 1888 used = plines_nofill(cln); | |
| 1889 #else | |
| 1890 validate_cheight(); | |
| 1891 used = curwin->w_cline_height; | |
| 1892 #endif | |
| 1893 | |
| 1894 /* If the cursor is below botline, we will at least scroll by the height | |
| 1895 * of the cursor line. Correct for empty lines, which are really part of | |
| 1896 * botline. */ | |
| 1897 if (cln >= curwin->w_botline) | |
| 1898 { | |
| 1899 scrolled = used; | |
| 1900 if (cln == curwin->w_botline) | |
| 1901 scrolled -= curwin->w_empty_rows; | |
| 1902 } | |
| 1903 | |
| 1904 /* | |
| 1905 * Stop counting lines to scroll when | |
| 1906 * - hitting start of the file | |
| 1907 * - scrolled nothing or at least 'sj' lines | |
| 1908 * - at least 'so' lines below the cursor | |
| 1909 * - lines between botline and cursor have been counted | |
| 1910 */ | |
| 1911 #ifdef FEAT_FOLDING | |
| 1912 if (!hasFolding(curwin->w_cursor.lnum, &loff.lnum, &boff.lnum)) | |
| 1913 #endif | |
| 1914 { | |
| 1915 loff.lnum = cln; | |
| 1916 boff.lnum = cln; | |
| 1917 } | |
| 1918 #ifdef FEAT_DIFF | |
| 1919 loff.fill = 0; | |
| 1920 boff.fill = 0; | |
| 1921 fill_below_window = diff_check_fill(curwin, curwin->w_botline) | |
| 1922 - curwin->w_filler_rows; | |
| 1923 #endif | |
| 1924 | |
| 1925 while (loff.lnum > 1) | |
| 1926 { | |
| 1927 /* Stop when scrolled nothing or at least "min_scroll", found "extra" | |
| 1928 * context for 'scrolloff' and counted all lines below the window. */ | |
| 1929 if ((((scrolled <= 0 || scrolled >= min_scroll) | |
| 1930 && extra >= ( | |
| 1931 #ifdef FEAT_MOUSE | |
| 1121 | 1932 mouse_dragging > 0 ? mouse_dragging - 1 : |
| 7 | 1933 #endif |
| 1934 p_so)) | |
| 1935 || boff.lnum + 1 > curbuf->b_ml.ml_line_count) | |
| 1936 && loff.lnum <= curwin->w_botline | |
| 1937 #ifdef FEAT_DIFF | |
| 1938 && (loff.lnum < curwin->w_botline | |
| 1939 || loff.fill >= fill_below_window) | |
| 1940 #endif | |
| 1941 ) | |
| 1942 break; | |
| 1943 | |
| 1944 /* Add one line above */ | |
| 1945 topline_back(&loff); | |
|
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1946 if (loff.height == MAXCOL) |
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1947 used = MAXCOL; |
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1948 else |
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1949 used += loff.height; |
| 7 | 1950 if (used > curwin->w_height) |
| 1951 break; | |
| 1952 if (loff.lnum >= curwin->w_botline | |
| 1953 #ifdef FEAT_DIFF | |
| 1954 && (loff.lnum > curwin->w_botline | |
| 1955 || loff.fill <= fill_below_window) | |
| 1956 #endif | |
| 1957 ) | |
| 1958 { | |
| 1959 /* Count screen lines that are below the window. */ | |
| 1960 scrolled += loff.height; | |
| 1961 if (loff.lnum == curwin->w_botline | |
| 1962 #ifdef FEAT_DIFF | |
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1963 && loff.fill == 0 |
| 7 | 1964 #endif |
| 1965 ) | |
| 1966 scrolled -= curwin->w_empty_rows; | |
| 1967 } | |
| 1968 | |
| 1969 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
| 1970 { | |
| 1971 /* Add one line below */ | |
| 1972 botline_forw(&boff); | |
| 1973 used += boff.height; | |
| 1974 if (used > curwin->w_height) | |
| 1975 break; | |
| 1976 if (extra < ( | |
| 1977 #ifdef FEAT_MOUSE | |
| 1978 mouse_dragging > 0 ? mouse_dragging - 1 : | |
| 1979 #endif | |
| 1980 p_so) || scrolled < min_scroll) | |
| 1981 { | |
| 1982 extra += boff.height; | |
| 1983 if (boff.lnum >= curwin->w_botline | |
| 1984 #ifdef FEAT_DIFF | |
| 1985 || (boff.lnum + 1 == curwin->w_botline | |
| 1986 && boff.fill > curwin->w_filler_rows) | |
| 1987 #endif | |
| 1988 ) | |
| 1989 { | |
| 1990 /* Count screen lines that are below the window. */ | |
| 1991 scrolled += boff.height; | |
| 1992 if (boff.lnum == curwin->w_botline | |
| 1993 #ifdef FEAT_DIFF | |
| 1994 && boff.fill == 0 | |
| 1995 #endif | |
| 1996 ) | |
| 1997 scrolled -= curwin->w_empty_rows; | |
| 1998 } | |
| 1999 } | |
| 2000 } | |
| 2001 } | |
| 2002 | |
| 2003 /* curwin->w_empty_rows is larger, no need to scroll */ | |
| 2004 if (scrolled <= 0) | |
| 2005 line_count = 0; | |
| 2006 /* more than a screenfull, don't scroll but redraw */ | |
| 2007 else if (used > curwin->w_height) | |
| 2008 line_count = used; | |
| 2009 /* scroll minimal number of lines */ | |
| 2010 else | |
| 2011 { | |
| 2012 line_count = 0; | |
| 2013 #ifdef FEAT_DIFF | |
| 2014 boff.fill = curwin->w_topfill; | |
| 2015 #endif | |
| 2016 boff.lnum = curwin->w_topline - 1; | |
| 2017 for (i = 0; i < scrolled && boff.lnum < curwin->w_botline; ) | |
| 2018 { | |
| 2019 botline_forw(&boff); | |
| 2020 i += boff.height; | |
| 2021 ++line_count; | |
| 2022 } | |
| 2023 if (i < scrolled) /* below curwin->w_botline, don't scroll */ | |
| 2024 line_count = 9999; | |
| 2025 } | |
| 2026 | |
| 2027 /* | |
| 2028 * Scroll up if the cursor is off the bottom of the screen a bit. | |
| 2029 * Otherwise put it at 1/2 of the screen. | |
| 2030 */ | |
| 2031 if (line_count >= curwin->w_height && line_count > min_scroll) | |
| 2032 scroll_cursor_halfway(FALSE); | |
| 2033 else | |
| 2034 scrollup(line_count, TRUE); | |
| 2035 | |
| 2036 /* | |
| 2037 * If topline didn't change we need to restore w_botline and w_empty_rows | |
| 2038 * (we changed them). | |
| 2039 * If topline did change, update_screen() will set botline. | |
| 2040 */ | |
| 2041 if (curwin->w_topline == old_topline && set_topbot) | |
| 2042 { | |
| 2043 curwin->w_botline = old_botline; | |
| 2044 curwin->w_empty_rows = old_empty_rows; | |
| 2045 curwin->w_valid = old_valid; | |
| 2046 } | |
| 2047 curwin->w_valid |= VALID_TOPLINE; | |
| 2048 } | |
| 2049 | |
| 2050 /* | |
| 2051 * Recompute topline to put the cursor halfway the window | |
| 2052 * If "atend" is TRUE, also put it halfway at the end of the file. | |
| 2053 */ | |
| 2054 void | |
|
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diff
changeset
|
2055 scroll_cursor_halfway(int atend) |
| 7 | 2056 { |
| 2057 int above = 0; | |
| 2058 linenr_T topline; | |
| 2059 #ifdef FEAT_DIFF | |
| 2060 int topfill = 0; | |
| 2061 #endif | |
| 2062 int below = 0; | |
| 2063 int used; | |
| 2064 lineoff_T loff; | |
| 2065 lineoff_T boff; | |
| 5661 | 2066 #ifdef FEAT_DIFF |
| 5653 | 2067 linenr_T old_topline = curwin->w_topline; |
| 5661 | 2068 #endif |
| 7 | 2069 |
| 2070 loff.lnum = boff.lnum = curwin->w_cursor.lnum; | |
| 2071 #ifdef FEAT_FOLDING | |
| 2072 (void)hasFolding(loff.lnum, &loff.lnum, &boff.lnum); | |
| 2073 #endif | |
| 2074 #ifdef FEAT_DIFF | |
| 2075 used = plines_nofill(loff.lnum); | |
| 2076 loff.fill = 0; | |
| 2077 boff.fill = 0; | |
| 2078 #else | |
| 2079 used = plines(loff.lnum); | |
| 2080 #endif | |
| 2081 topline = loff.lnum; | |
| 2082 while (topline > 1) | |
| 2083 { | |
| 2084 if (below <= above) /* add a line below the cursor first */ | |
| 2085 { | |
| 2086 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
| 2087 { | |
| 2088 botline_forw(&boff); | |
| 2089 used += boff.height; | |
| 2090 if (used > curwin->w_height) | |
| 2091 break; | |
| 2092 below += boff.height; | |
| 2093 } | |
| 2094 else | |
| 2095 { | |
| 2096 ++below; /* count a "~" line */ | |
| 2097 if (atend) | |
| 2098 ++used; | |
| 2099 } | |
| 2100 } | |
| 2101 | |
| 2102 if (below > above) /* add a line above the cursor */ | |
| 2103 { | |
| 2104 topline_back(&loff); | |
|
2082
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updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2105 if (loff.height == MAXCOL) |
|
8ca3c9ad0bee
updated for version 7.2.366
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parents:
2070
diff
changeset
|
2106 used = MAXCOL; |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2107 else |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2108 used += loff.height; |
| 7 | 2109 if (used > curwin->w_height) |
| 2110 break; | |
| 2111 above += loff.height; | |
| 2112 topline = loff.lnum; | |
| 2113 #ifdef FEAT_DIFF | |
| 2114 topfill = loff.fill; | |
| 2115 #endif | |
| 2116 } | |
| 2117 } | |
| 2118 #ifdef FEAT_FOLDING | |
| 2119 if (!hasFolding(topline, &curwin->w_topline, NULL)) | |
| 2120 #endif | |
| 2121 curwin->w_topline = topline; | |
| 2122 #ifdef FEAT_DIFF | |
| 2123 curwin->w_topfill = topfill; | |
| 5653 | 2124 if (old_topline > curwin->w_topline + curwin->w_height) |
| 2125 curwin->w_botfill = FALSE; | |
| 7 | 2126 check_topfill(curwin, FALSE); |
| 2127 #endif | |
| 2128 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2129 curwin->w_valid |= VALID_TOPLINE; | |
| 2130 } | |
| 2131 | |
| 2132 /* | |
| 2133 * Correct the cursor position so that it is in a part of the screen at least | |
| 2134 * 'so' lines from the top and bottom, if possible. | |
| 2135 * If not possible, put it at the same position as scroll_cursor_halfway(). | |
| 2136 * When called topline must be valid! | |
| 2137 */ | |
| 2138 void | |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2139 cursor_correct(void) |
| 7 | 2140 { |
| 2141 int above = 0; /* screen lines above topline */ | |
| 2142 linenr_T topline; | |
| 2143 int below = 0; /* screen lines below botline */ | |
| 2144 linenr_T botline; | |
| 2145 int above_wanted, below_wanted; | |
| 2146 linenr_T cln; /* Cursor Line Number */ | |
| 2147 int max_off; | |
| 2148 | |
| 2149 /* | |
| 2150 * How many lines we would like to have above/below the cursor depends on | |
| 2151 * whether the first/last line of the file is on screen. | |
| 2152 */ | |
| 2153 above_wanted = p_so; | |
| 2154 below_wanted = p_so; | |
| 2155 #ifdef FEAT_MOUSE | |
| 1121 | 2156 if (mouse_dragging > 0) |
| 7 | 2157 { |
| 2158 above_wanted = mouse_dragging - 1; | |
| 2159 below_wanted = mouse_dragging - 1; | |
| 2160 } | |
| 2161 #endif | |
| 2162 if (curwin->w_topline == 1) | |
| 2163 { | |
| 2164 above_wanted = 0; | |
| 2165 max_off = curwin->w_height / 2; | |
| 2166 if (below_wanted > max_off) | |
| 2167 below_wanted = max_off; | |
| 2168 } | |
| 2169 validate_botline(); | |
| 2170 if (curwin->w_botline == curbuf->b_ml.ml_line_count + 1 | |
| 2171 #ifdef FEAT_MOUSE | |
| 1121 | 2172 && mouse_dragging == 0 |
| 7 | 2173 #endif |
| 2174 ) | |
| 2175 { | |
| 2176 below_wanted = 0; | |
| 2177 max_off = (curwin->w_height - 1) / 2; | |
| 2178 if (above_wanted > max_off) | |
| 2179 above_wanted = max_off; | |
| 2180 } | |
| 2181 | |
| 2182 /* | |
| 2183 * If there are sufficient file-lines above and below the cursor, we can | |
| 2184 * return now. | |
| 2185 */ | |
| 2186 cln = curwin->w_cursor.lnum; | |
| 2187 if (cln >= curwin->w_topline + above_wanted | |
| 2188 && cln < curwin->w_botline - below_wanted | |
| 2189 #ifdef FEAT_FOLDING | |
| 2190 && !hasAnyFolding(curwin) | |
| 2191 #endif | |
| 2192 ) | |
| 2193 return; | |
| 2194 | |
| 2195 /* | |
| 2196 * Narrow down the area where the cursor can be put by taking lines from | |
| 2197 * the top and the bottom until: | |
| 2198 * - the desired context lines are found | |
| 2199 * - the lines from the top is past the lines from the bottom | |
| 2200 */ | |
| 2201 topline = curwin->w_topline; | |
| 2202 botline = curwin->w_botline - 1; | |
| 2203 #ifdef FEAT_DIFF | |
| 2204 /* count filler lines as context */ | |
| 2205 above = curwin->w_topfill; | |
| 2206 below = curwin->w_filler_rows; | |
| 2207 #endif | |
| 2208 while ((above < above_wanted || below < below_wanted) && topline < botline) | |
| 2209 { | |
| 2210 if (below < below_wanted && (below <= above || above >= above_wanted)) | |
| 2211 { | |
| 2212 #ifdef FEAT_FOLDING | |
| 2213 if (hasFolding(botline, &botline, NULL)) | |
| 2214 ++below; | |
| 2215 else | |
| 2216 #endif | |
| 2217 below += plines(botline); | |
| 2218 --botline; | |
| 2219 } | |
| 2220 if (above < above_wanted && (above < below || below >= below_wanted)) | |
| 2221 { | |
| 2222 #ifdef FEAT_FOLDING | |
| 2223 if (hasFolding(topline, NULL, &topline)) | |
| 2224 ++above; | |
| 2225 else | |
| 2226 #endif | |
|
7103
84d318257a45
commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2227 above += PLINES_NOFILL(topline); |
|
84d318257a45
commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2228 #ifdef FEAT_DIFF |
| 7 | 2229 /* Count filler lines below this line as context. */ |
| 2230 if (topline < botline) | |
| 2231 above += diff_check_fill(curwin, topline + 1); | |
| 2232 #endif | |
| 2233 ++topline; | |
| 2234 } | |
| 2235 } | |
| 2236 if (topline == botline || botline == 0) | |
| 2237 curwin->w_cursor.lnum = topline; | |
| 2238 else if (topline > botline) | |
| 2239 curwin->w_cursor.lnum = botline; | |
| 2240 else | |
| 2241 { | |
| 2242 if (cln < topline && curwin->w_topline > 1) | |
| 2243 { | |
| 2244 curwin->w_cursor.lnum = topline; | |
| 2245 curwin->w_valid &= | |
| 2246 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
| 2247 } | |
| 2248 if (cln > botline && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 2249 { | |
| 2250 curwin->w_cursor.lnum = botline; | |
| 2251 curwin->w_valid &= | |
| 2252 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
| 2253 } | |
| 2254 } | |
| 2255 curwin->w_valid |= VALID_TOPLINE; | |
| 2256 } | |
| 2257 | |
|
7803
37c929c4a073
commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
Christian Brabandt <cb@256bit.org>
parents:
7103
diff
changeset
|
2258 static void get_scroll_overlap(lineoff_T *lp, int dir); |
| 7 | 2259 |
| 2260 /* | |
| 2261 * move screen 'count' pages up or down and update screen | |
| 2262 * | |
| 2263 * return FAIL for failure, OK otherwise | |
| 2264 */ | |
| 2265 int | |
|
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2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2266 onepage(int dir, long count) |
| 7 | 2267 { |
| 2268 long n; | |
| 2269 int retval = OK; | |
| 2270 lineoff_T loff; | |
| 2271 linenr_T old_topline = curwin->w_topline; | |
| 2272 | |
| 2273 if (curbuf->b_ml.ml_line_count == 1) /* nothing to do */ | |
| 2274 { | |
| 2275 beep_flush(); | |
| 2276 return FAIL; | |
| 2277 } | |
| 2278 | |
| 2279 for ( ; count > 0; --count) | |
| 2280 { | |
| 2281 validate_botline(); | |
| 2282 /* | |
| 2283 * It's an error to move a page up when the first line is already on | |
| 2284 * the screen. It's an error to move a page down when the last line | |
| 2285 * is on the screen and the topline is 'scrolloff' lines from the | |
| 2286 * last line. | |
| 2287 */ | |
| 2288 if (dir == FORWARD | |
| 2289 ? ((curwin->w_topline >= curbuf->b_ml.ml_line_count - p_so) | |
| 2290 && curwin->w_botline > curbuf->b_ml.ml_line_count) | |
| 2291 : (curwin->w_topline == 1 | |
| 2292 #ifdef FEAT_DIFF | |
| 2293 && curwin->w_topfill == | |
| 2294 diff_check_fill(curwin, curwin->w_topline) | |
| 2295 #endif | |
| 2296 )) | |
| 2297 { | |
| 2298 beep_flush(); | |
| 2299 retval = FAIL; | |
| 2300 break; | |
| 2301 } | |
| 2302 | |
| 2303 #ifdef FEAT_DIFF | |
| 2304 loff.fill = 0; | |
| 2305 #endif | |
| 2306 if (dir == FORWARD) | |
| 2307 { | |
|
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commit https://github.com/vim/vim/commit/a1f4cb93ba50ea9e40cd4b1f5592b8a6d1398660
Christian Brabandt <cb@256bit.org>
parents:
10295
diff
changeset
|
2308 if (ONE_WINDOW && p_window > 0 && p_window < Rows - 1) |
| 7 | 2309 { |
| 164 | 2310 /* Vi compatible scrolling */ |
| 2311 if (p_window <= 2) | |
| 2312 ++curwin->w_topline; | |
| 2313 else | |
| 2314 curwin->w_topline += p_window - 2; | |
| 2315 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
| 2316 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
| 2317 curwin->w_cursor.lnum = curwin->w_topline; | |
| 2318 } | |
| 2319 else if (curwin->w_botline > curbuf->b_ml.ml_line_count) | |
| 2320 { | |
| 2321 /* at end of file */ | |
| 7 | 2322 curwin->w_topline = curbuf->b_ml.ml_line_count; |
| 2323 #ifdef FEAT_DIFF | |
| 2324 curwin->w_topfill = 0; | |
| 2325 #endif | |
| 2326 curwin->w_valid &= ~(VALID_WROW|VALID_CROW); | |
| 2327 } | |
| 2328 else | |
| 2329 { | |
| 2330 /* For the overlap, start with the line just below the window | |
| 2331 * and go upwards. */ | |
| 2332 loff.lnum = curwin->w_botline; | |
| 2333 #ifdef FEAT_DIFF | |
| 2334 loff.fill = diff_check_fill(curwin, loff.lnum) | |
| 2335 - curwin->w_filler_rows; | |
| 2336 #endif | |
| 2337 get_scroll_overlap(&loff, -1); | |
| 2338 curwin->w_topline = loff.lnum; | |
| 2339 #ifdef FEAT_DIFF | |
| 2340 curwin->w_topfill = loff.fill; | |
| 2341 check_topfill(curwin, FALSE); | |
| 2342 #endif | |
| 2343 curwin->w_cursor.lnum = curwin->w_topline; | |
| 2344 curwin->w_valid &= ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW| | |
| 2345 VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2346 } | |
| 2347 } | |
| 2348 else /* dir == BACKWARDS */ | |
| 2349 { | |
| 2350 #ifdef FEAT_DIFF | |
| 2351 if (curwin->w_topline == 1) | |
| 2352 { | |
| 2353 /* Include max number of filler lines */ | |
| 2354 max_topfill(); | |
| 2355 continue; | |
| 2356 } | |
| 2357 #endif | |
|
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commit https://github.com/vim/vim/commit/a1f4cb93ba50ea9e40cd4b1f5592b8a6d1398660
Christian Brabandt <cb@256bit.org>
parents:
10295
diff
changeset
|
2358 if (ONE_WINDOW && p_window > 0 && p_window < Rows - 1) |
| 164 | 2359 { |
| 2360 /* Vi compatible scrolling (sort of) */ | |
| 2361 if (p_window <= 2) | |
| 2362 --curwin->w_topline; | |
| 2363 else | |
| 2364 curwin->w_topline -= p_window - 2; | |
| 2365 if (curwin->w_topline < 1) | |
| 2366 curwin->w_topline = 1; | |
| 2367 curwin->w_cursor.lnum = curwin->w_topline + p_window - 1; | |
| 2368 if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count) | |
| 2369 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; | |
| 2370 continue; | |
| 2371 } | |
| 2372 | |
| 7 | 2373 /* Find the line at the top of the window that is going to be the |
| 2374 * line at the bottom of the window. Make sure this results in | |
| 2375 * the same line as before doing CTRL-F. */ | |
| 2376 loff.lnum = curwin->w_topline - 1; | |
| 2377 #ifdef FEAT_DIFF | |
| 2378 loff.fill = diff_check_fill(curwin, loff.lnum + 1) | |
| 2379 - curwin->w_topfill; | |
| 2380 #endif | |
| 2381 get_scroll_overlap(&loff, 1); | |
| 2382 | |
| 2383 if (loff.lnum >= curbuf->b_ml.ml_line_count) | |
| 2384 { | |
| 2385 loff.lnum = curbuf->b_ml.ml_line_count; | |
| 2386 #ifdef FEAT_DIFF | |
| 2387 loff.fill = 0; | |
| 2388 } | |
| 2389 else | |
| 2390 { | |
| 2391 botline_topline(&loff); | |
| 2392 #endif | |
| 2393 } | |
| 2394 curwin->w_cursor.lnum = loff.lnum; | |
| 2395 | |
| 2396 /* Find the line just above the new topline to get the right line | |
| 2397 * at the bottom of the window. */ | |
| 2398 n = 0; | |
| 2399 while (n <= curwin->w_height && loff.lnum >= 1) | |
| 2400 { | |
| 2401 topline_back(&loff); | |
|
2082
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parents:
2070
diff
changeset
|
2402 if (loff.height == MAXCOL) |
|
8ca3c9ad0bee
updated for version 7.2.366
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parents:
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diff
changeset
|
2403 n = MAXCOL; |
|
8ca3c9ad0bee
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parents:
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diff
changeset
|
2404 else |
|
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updated for version 7.2.366
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parents:
2070
diff
changeset
|
2405 n += loff.height; |
| 7 | 2406 } |
|
2082
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parents:
2070
diff
changeset
|
2407 if (loff.lnum < 1) /* at begin of file */ |
| 7 | 2408 { |
| 2409 curwin->w_topline = 1; | |
| 2410 #ifdef FEAT_DIFF | |
| 2411 max_topfill(); | |
| 2412 #endif | |
| 2413 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 2414 } | |
| 2415 else | |
| 2416 { | |
| 2417 /* Go two lines forward again. */ | |
| 2418 #ifdef FEAT_DIFF | |
| 2419 topline_botline(&loff); | |
| 2420 #endif | |
| 2421 botline_forw(&loff); | |
| 2422 botline_forw(&loff); | |
| 2423 #ifdef FEAT_DIFF | |
| 2424 botline_topline(&loff); | |
| 2425 #endif | |
| 2426 #ifdef FEAT_FOLDING | |
| 2427 /* We're at the wrong end of a fold now. */ | |
| 2428 (void)hasFolding(loff.lnum, &loff.lnum, NULL); | |
| 2429 #endif | |
| 2430 | |
| 2431 /* Always scroll at least one line. Avoid getting stuck on | |
| 2432 * very long lines. */ | |
| 2433 if (loff.lnum >= curwin->w_topline | |
| 2434 #ifdef FEAT_DIFF | |
| 2435 && (loff.lnum > curwin->w_topline | |
| 2436 || loff.fill >= curwin->w_topfill) | |
| 2437 #endif | |
| 2438 ) | |
| 2439 { | |
| 2440 #ifdef FEAT_DIFF | |
| 2441 /* First try using the maximum number of filler lines. If | |
| 2442 * that's not enough, backup one line. */ | |
| 2443 loff.fill = curwin->w_topfill; | |
| 2444 if (curwin->w_topfill < diff_check_fill(curwin, | |
| 2445 curwin->w_topline)) | |
| 2446 max_topfill(); | |
| 2447 if (curwin->w_topfill == loff.fill) | |
| 2448 #endif | |
| 2449 { | |
| 2450 --curwin->w_topline; | |
| 2451 #ifdef FEAT_DIFF | |
| 2452 curwin->w_topfill = 0; | |
| 2453 #endif | |
| 2454 } | |
| 2455 comp_botline(curwin); | |
| 2456 curwin->w_cursor.lnum = curwin->w_botline - 1; | |
| 5764 | 2457 curwin->w_valid &= |
| 2458 ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW|VALID_CROW); | |
| 7 | 2459 } |
| 2460 else | |
| 2461 { | |
| 2462 curwin->w_topline = loff.lnum; | |
| 2463 #ifdef FEAT_DIFF | |
| 2464 curwin->w_topfill = loff.fill; | |
| 2465 check_topfill(curwin, FALSE); | |
| 2466 #endif | |
| 2467 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 2468 } | |
| 2469 } | |
| 2470 } | |
| 2471 } | |
| 2472 #ifdef FEAT_FOLDING | |
| 2473 foldAdjustCursor(); | |
| 2474 #endif | |
| 2475 cursor_correct(); | |
|
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Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
2476 check_cursor_col(); |
| 161 | 2477 if (retval == OK) |
| 2478 beginline(BL_SOL | BL_FIX); | |
| 7 | 2479 curwin->w_valid &= ~(VALID_WCOL|VALID_WROW|VALID_VIRTCOL); |
| 2480 | |
|
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|
2481 if (retval == OK && dir == FORWARD) |
| 7 | 2482 { |
|
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diff
changeset
|
2483 // Avoid the screen jumping up and down when 'scrolloff' is non-zero. |
|
1bc96dbb5498
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diff
changeset
|
2484 // 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
|
2485 // wrapping lines and non-wrapping line). |
|
1bc96dbb5498
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changeset
|
2486 if (check_top_offset()) |
|
1bc96dbb5498
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diff
changeset
|
2487 { |
|
1bc96dbb5498
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diff
changeset
|
2488 scroll_cursor_top(1, FALSE); |
|
1bc96dbb5498
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changeset
|
2489 if (curwin->w_topline <= old_topline |
| 7 | 2490 && old_topline < curbuf->b_ml.ml_line_count) |
|
14317
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diff
changeset
|
2491 { |
|
1bc96dbb5498
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parents:
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changeset
|
2492 curwin->w_topline = old_topline + 1; |
| 7 | 2493 #ifdef FEAT_FOLDING |
|
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diff
changeset
|
2494 (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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parents:
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diff
changeset
|
2495 #endif |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
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diff
changeset
|
2496 } |
|
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
|
2497 } |
|
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changeset
|
2498 #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
|
2499 else if (curwin->w_botline > curbuf->b_ml.ml_line_count) |
| 7 | 2500 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
| 2501 #endif | |
| 2502 } | |
| 2503 | |
| 2504 redraw_later(VALID); | |
| 2505 return retval; | |
| 2506 } | |
| 2507 | |
| 2508 /* | |
| 2509 * Decide how much overlap to use for page-up or page-down scrolling. | |
| 2510 * This is symmetric, so that doing both keeps the same lines displayed. | |
| 2511 * Three lines are examined: | |
| 2512 * | |
| 2513 * before CTRL-F after CTRL-F / before CTRL-B | |
| 2514 * etc. l1 | |
| 2515 * l1 last but one line ------------ | |
| 2516 * l2 last text line l2 top text line | |
| 2517 * ------------- l3 second text line | |
| 2518 * l3 etc. | |
| 2519 */ | |
| 2520 static void | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2521 get_scroll_overlap(lineoff_T *lp, int dir) |
| 7 | 2522 { |
| 2523 int h1, h2, h3, h4; | |
| 2524 int min_height = curwin->w_height - 2; | |
| 2525 lineoff_T loff0, loff1, loff2; | |
| 2526 | |
| 2527 #ifdef FEAT_DIFF | |
| 2528 if (lp->fill > 0) | |
| 2529 lp->height = 1; | |
| 2530 else | |
| 2531 lp->height = plines_nofill(lp->lnum); | |
| 2532 #else | |
| 2533 lp->height = plines(lp->lnum); | |
| 2534 #endif | |
| 2535 h1 = lp->height; | |
| 2536 if (h1 > min_height) | |
| 2537 return; /* no overlap */ | |
| 2538 | |
| 2539 loff0 = *lp; | |
| 2540 if (dir > 0) | |
| 2541 botline_forw(lp); | |
| 2542 else | |
| 2543 topline_back(lp); | |
| 2544 h2 = lp->height; | |
| 3968 | 2545 if (h2 == MAXCOL || h2 + h1 > min_height) |
| 7 | 2546 { |
| 2547 *lp = loff0; /* no overlap */ | |
| 2548 return; | |
| 2549 } | |
| 2550 | |
| 2551 loff1 = *lp; | |
| 2552 if (dir > 0) | |
| 2553 botline_forw(lp); | |
| 2554 else | |
| 2555 topline_back(lp); | |
| 2556 h3 = lp->height; | |
| 3968 | 2557 if (h3 == MAXCOL || h3 + h2 > min_height) |
| 7 | 2558 { |
| 2559 *lp = loff0; /* no overlap */ | |
| 2560 return; | |
| 2561 } | |
| 2562 | |
| 2563 loff2 = *lp; | |
| 2564 if (dir > 0) | |
| 2565 botline_forw(lp); | |
| 2566 else | |
| 2567 topline_back(lp); | |
| 2568 h4 = lp->height; | |
| 3968 | 2569 if (h4 == MAXCOL || h4 + h3 + h2 > min_height || h3 + h2 + h1 > min_height) |
| 7 | 2570 *lp = loff1; /* 1 line overlap */ |
| 2571 else | |
| 2572 *lp = loff2; /* 2 lines overlap */ | |
| 2573 return; | |
| 2574 } | |
| 2575 | |
| 2576 /* #define KEEP_SCREEN_LINE */ | |
| 2577 /* | |
| 2578 * Scroll 'scroll' lines up or down. | |
| 2579 */ | |
| 2580 void | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2581 halfpage(int flag, linenr_T Prenum) |
| 7 | 2582 { |
| 2583 long scrolled = 0; | |
| 2584 int i; | |
| 2585 int n; | |
| 2586 int room; | |
| 2587 | |
| 2588 if (Prenum) | |
| 2589 curwin->w_p_scr = (Prenum > curwin->w_height) ? | |
| 2590 curwin->w_height : Prenum; | |
| 2591 n = (curwin->w_p_scr <= curwin->w_height) ? | |
| 2592 curwin->w_p_scr : curwin->w_height; | |
| 2593 | |
|
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Christian Brabandt <cb@256bit.org>
parents:
11121
diff
changeset
|
2594 update_topline(); |
| 7 | 2595 validate_botline(); |
| 2596 room = curwin->w_empty_rows; | |
| 2597 #ifdef FEAT_DIFF | |
| 2598 room += curwin->w_filler_rows; | |
| 2599 #endif | |
| 2600 if (flag) | |
| 2601 { | |
| 2602 /* | |
| 2603 * scroll the text up | |
| 2604 */ | |
| 2605 while (n > 0 && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 2606 { | |
| 2607 #ifdef FEAT_DIFF | |
| 2608 if (curwin->w_topfill > 0) | |
| 2609 { | |
| 2610 i = 1; | |
| 2611 if (--n < 0 && scrolled > 0) | |
| 2612 break; | |
| 2613 --curwin->w_topfill; | |
| 2614 } | |
| 2615 else | |
| 2616 #endif | |
| 2617 { | |
|
7103
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commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2618 i = PLINES_NOFILL(curwin->w_topline); |
| 7 | 2619 n -= i; |
| 2620 if (n < 0 && scrolled > 0) | |
| 2621 break; | |
| 2622 #ifdef FEAT_FOLDING | |
| 2623 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
| 2624 #endif | |
| 2625 ++curwin->w_topline; | |
| 2626 #ifdef FEAT_DIFF | |
| 2627 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 2628 #endif | |
| 2629 | |
| 2630 #ifndef KEEP_SCREEN_LINE | |
| 2631 if (curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
| 2632 { | |
| 2633 ++curwin->w_cursor.lnum; | |
| 2634 curwin->w_valid &= | |
| 2635 ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
| 2636 } | |
| 2637 #endif | |
| 2638 } | |
| 2639 curwin->w_valid &= ~(VALID_CROW|VALID_WROW); | |
| 2640 scrolled += i; | |
| 2641 | |
| 2642 /* | |
| 2643 * Correct w_botline for changed w_topline. | |
| 2644 * Won't work when there are filler lines. | |
| 2645 */ | |
| 2646 #ifdef FEAT_DIFF | |
| 2647 if (curwin->w_p_diff) | |
| 2648 curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2649 else | |
| 2650 #endif | |
| 2651 { | |
| 2652 room += i; | |
| 2653 do | |
| 2654 { | |
| 2655 i = plines(curwin->w_botline); | |
| 2656 if (i > room) | |
| 2657 break; | |
| 2658 #ifdef FEAT_FOLDING | |
| 2659 (void)hasFolding(curwin->w_botline, NULL, | |
| 2660 &curwin->w_botline); | |
| 2661 #endif | |
| 2662 ++curwin->w_botline; | |
| 2663 room -= i; | |
| 2664 } while (curwin->w_botline <= curbuf->b_ml.ml_line_count); | |
| 2665 } | |
| 2666 } | |
| 2667 | |
| 2668 #ifndef KEEP_SCREEN_LINE | |
| 2669 /* | |
| 2670 * When hit bottom of the file: move cursor down. | |
| 2671 */ | |
| 2672 if (n > 0) | |
| 2673 { | |
| 2674 # ifdef FEAT_FOLDING | |
| 2675 if (hasAnyFolding(curwin)) | |
| 2676 { | |
| 2677 while (--n >= 0 | |
| 2678 && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
| 2679 { | |
| 2680 (void)hasFolding(curwin->w_cursor.lnum, NULL, | |
| 2681 &curwin->w_cursor.lnum); | |
| 2682 ++curwin->w_cursor.lnum; | |
| 2683 } | |
| 2684 } | |
| 2685 else | |
| 2686 # endif | |
| 2687 curwin->w_cursor.lnum += n; | |
| 2688 check_cursor_lnum(); | |
| 2689 } | |
| 2690 #else | |
| 2691 /* try to put the cursor in the same screen line */ | |
| 2692 while ((curwin->w_cursor.lnum < curwin->w_topline || scrolled > 0) | |
| 2693 && curwin->w_cursor.lnum < curwin->w_botline - 1) | |
| 2694 { | |
| 2695 scrolled -= plines(curwin->w_cursor.lnum); | |
| 2696 if (scrolled < 0 && curwin->w_cursor.lnum >= curwin->w_topline) | |
| 2697 break; | |
| 2698 # ifdef FEAT_FOLDING | |
| 2699 (void)hasFolding(curwin->w_cursor.lnum, NULL, | |
| 2700 &curwin->w_cursor.lnum); | |
| 2701 # endif | |
| 2702 ++curwin->w_cursor.lnum; | |
| 2703 } | |
| 2704 #endif | |
| 2705 } | |
| 2706 else | |
| 2707 { | |
| 2708 /* | |
| 2709 * scroll the text down | |
| 2710 */ | |
| 2711 while (n > 0 && curwin->w_topline > 1) | |
| 2712 { | |
| 2713 #ifdef FEAT_DIFF | |
| 2714 if (curwin->w_topfill < diff_check_fill(curwin, curwin->w_topline)) | |
| 2715 { | |
| 2716 i = 1; | |
| 2717 if (--n < 0 && scrolled > 0) | |
| 2718 break; | |
| 2719 ++curwin->w_topfill; | |
| 2720 } | |
| 2721 else | |
| 2722 #endif | |
| 2723 { | |
|
7103
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parents:
7088
diff
changeset
|
2724 i = PLINES_NOFILL(curwin->w_topline - 1); |
| 7 | 2725 n -= i; |
| 2726 if (n < 0 && scrolled > 0) | |
| 2727 break; | |
| 2728 --curwin->w_topline; | |
| 2729 #ifdef FEAT_FOLDING | |
| 2730 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 2731 #endif | |
| 2732 #ifdef FEAT_DIFF | |
| 2733 curwin->w_topfill = 0; | |
| 2734 #endif | |
| 2735 } | |
| 2736 curwin->w_valid &= ~(VALID_CROW|VALID_WROW| | |
| 2737 VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2738 scrolled += i; | |
| 2739 #ifndef KEEP_SCREEN_LINE | |
| 2740 if (curwin->w_cursor.lnum > 1) | |
| 2741 { | |
| 2742 --curwin->w_cursor.lnum; | |
| 2743 curwin->w_valid &= ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
| 2744 } | |
| 2745 #endif | |
| 2746 } | |
| 2747 #ifndef KEEP_SCREEN_LINE | |
| 2748 /* | |
| 2749 * When hit top of the file: move cursor up. | |
| 2750 */ | |
| 2751 if (n > 0) | |
| 2752 { | |
| 2753 if (curwin->w_cursor.lnum <= (linenr_T)n) | |
| 2754 curwin->w_cursor.lnum = 1; | |
| 2755 else | |
| 2756 # ifdef FEAT_FOLDING | |
| 2757 if (hasAnyFolding(curwin)) | |
| 2758 { | |
| 2759 while (--n >= 0 && curwin->w_cursor.lnum > 1) | |
| 2760 { | |
| 2761 --curwin->w_cursor.lnum; | |
| 2762 (void)hasFolding(curwin->w_cursor.lnum, | |
| 2763 &curwin->w_cursor.lnum, NULL); | |
| 2764 } | |
| 2765 } | |
| 2766 else | |
| 2767 # endif | |
| 2768 curwin->w_cursor.lnum -= n; | |
| 2769 } | |
| 2770 #else | |
| 2771 /* try to put the cursor in the same screen line */ | |
| 2772 scrolled += n; /* move cursor when topline is 1 */ | |
| 2773 while (curwin->w_cursor.lnum > curwin->w_topline | |
| 2774 && (scrolled > 0 || curwin->w_cursor.lnum >= curwin->w_botline)) | |
| 2775 { | |
| 2776 scrolled -= plines(curwin->w_cursor.lnum - 1); | |
| 2777 if (scrolled < 0 && curwin->w_cursor.lnum < curwin->w_botline) | |
| 2778 break; | |
| 2779 --curwin->w_cursor.lnum; | |
| 2780 # ifdef FEAT_FOLDING | |
| 2781 foldAdjustCursor(); | |
| 2782 # endif | |
| 2783 } | |
| 2784 #endif | |
| 2785 } | |
| 2786 # ifdef FEAT_FOLDING | |
| 2787 /* Move cursor to first line of closed fold. */ | |
| 2788 foldAdjustCursor(); | |
| 2789 # endif | |
| 2790 #ifdef FEAT_DIFF | |
| 2791 check_topfill(curwin, !flag); | |
| 2792 #endif | |
| 2793 cursor_correct(); | |
| 2794 beginline(BL_SOL | BL_FIX); | |
| 2795 redraw_later(VALID); | |
| 2796 } | |
|
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2797 |
|
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|
2798 void |
|
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diff
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|
2799 do_check_cursorbind(void) |
|
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2800 { |
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|
2801 linenr_T line = curwin->w_cursor.lnum; |
| 3415 | 2802 colnr_T col = curwin->w_cursor.col; |
| 2803 # ifdef FEAT_VIRTUALEDIT | |
| 2804 colnr_T coladd = curwin->w_cursor.coladd; | |
| 2805 # endif | |
| 3433 | 2806 colnr_T curswant = curwin->w_curswant; |
| 2807 int set_curswant = curwin->w_set_curswant; | |
|
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|
2808 win_T *old_curwin = curwin; |
|
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|
2809 buf_T *old_curbuf = curbuf; |
| 2693 | 2810 int restart_edit_save; |
|
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2811 int old_VIsual_select = VIsual_select; |
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2812 int old_VIsual_active = VIsual_active; |
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2813 |
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2814 /* |
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2815 * loop through the cursorbound windows |
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2816 */ |
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|
2817 VIsual_select = VIsual_active = 0; |
|
9649
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diff
changeset
|
2818 FOR_ALL_WINDOWS(curwin) |
|
2250
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2819 { |
|
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|
2820 curbuf = curwin->w_buffer; |
|
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2821 /* skip original window and windows with 'noscrollbind' */ |
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2822 if (curwin != old_curwin && curwin->w_p_crb) |
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2823 { |
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2824 # ifdef FEAT_DIFF |
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2825 if (curwin->w_p_diff) |
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2826 curwin->w_cursor.lnum = |
|
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2827 diff_get_corresponding_line(old_curbuf, line); |
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2828 else |
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2829 # endif |
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2830 curwin->w_cursor.lnum = line; |
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|
2831 curwin->w_cursor.col = col; |
| 3415 | 2832 # ifdef FEAT_VIRTUALEDIT |
| 2833 curwin->w_cursor.coladd = coladd; | |
| 2834 # endif | |
| 3433 | 2835 curwin->w_curswant = curswant; |
| 2836 curwin->w_set_curswant = set_curswant; | |
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2837 |
| 2693 | 2838 /* Make sure the cursor is in a valid position. Temporarily set |
| 2839 * "restart_edit" to allow the cursor to be beyond the EOL. */ | |
| 2840 restart_edit_save = restart_edit; | |
| 2841 restart_edit = TRUE; | |
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2842 check_cursor(); |
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2843 # ifdef FEAT_SYN_HL |
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2844 if (curwin->w_p_cul || curwin->w_p_cuc) |
|
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changeset
|
2845 validate_cursor(); |
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2846 # endif |
| 2693 | 2847 restart_edit = restart_edit_save; |
|
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2848 # ifdef FEAT_MBYTE |
|
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2849 /* Correct cursor for multi-byte character. */ |
|
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2850 if (has_mbyte) |
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2851 mb_adjust_cursor(); |
|
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|
2852 # endif |
|
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patch 8.0.0188: redrawing for 'cursorbind' is inefficient
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parents:
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changeset
|
2853 redraw_later(VALID); |
|
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changeset
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2854 |
| 2688 | 2855 /* Only scroll when 'scrollbind' hasn't done this. */ |
| 2856 if (!curwin->w_p_scb) | |
| 2857 update_topline(); | |
|
2250
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2858 curwin->w_redr_status = TRUE; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2859 } |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2860 } |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2861 |
|
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 * reset current-window |
|
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 VIsual_select = old_VIsual_select; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2866 VIsual_active = old_VIsual_active; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2867 curwin = old_curwin; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2868 curbuf = old_curbuf; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2869 } |