Mercurial > vim
annotate src/move.c @ 18342:fedab77fee7b
Added tag v8.1.2165 for changeset a9d518b1271b9f9d104a50f21fdccca8b2fcdda0
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Wed, 16 Oct 2019 22:30:05 +0200 |
| parents | 08f1dd29550e |
| children | 9f51d0cef8da |
| 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 int scrolljump_value(void); |
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23 static int check_top_offset(void); |
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24 static void curs_rows(win_T *wp); |
| 7 | 25 |
| 26 typedef struct | |
| 27 { | |
| 28 linenr_T lnum; /* line number */ | |
| 29 #ifdef FEAT_DIFF | |
| 30 int fill; /* filler lines */ | |
| 31 #endif | |
| 32 int height; /* height of added line */ | |
| 33 } lineoff_T; | |
| 34 | |
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35 static void topline_back(lineoff_T *lp); |
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36 static void botline_forw(lineoff_T *lp); |
| 7 | 37 |
| 38 /* | |
| 39 * Compute wp->w_botline for the current wp->w_topline. Can be called after | |
| 40 * wp->w_topline changed. | |
| 41 */ | |
| 42 static void | |
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43 comp_botline(win_T *wp) |
| 7 | 44 { |
| 45 int n; | |
| 46 linenr_T lnum; | |
| 47 int done; | |
| 48 #ifdef FEAT_FOLDING | |
| 49 linenr_T last; | |
| 50 int folded; | |
| 51 #endif | |
| 52 | |
| 53 /* | |
| 54 * If w_cline_row is valid, start there. | |
| 55 * Otherwise have to start at w_topline. | |
| 56 */ | |
| 57 check_cursor_moved(wp); | |
| 58 if (wp->w_valid & VALID_CROW) | |
| 59 { | |
| 60 lnum = wp->w_cursor.lnum; | |
| 61 done = wp->w_cline_row; | |
| 62 } | |
| 63 else | |
| 64 { | |
| 65 lnum = wp->w_topline; | |
| 66 done = 0; | |
| 67 } | |
| 68 | |
| 69 for ( ; lnum <= wp->w_buffer->b_ml.ml_line_count; ++lnum) | |
| 70 { | |
| 71 #ifdef FEAT_FOLDING | |
| 72 last = lnum; | |
| 73 folded = FALSE; | |
| 74 if (hasFoldingWin(wp, lnum, NULL, &last, TRUE, NULL)) | |
| 75 { | |
| 76 n = 1; | |
| 77 folded = TRUE; | |
| 78 } | |
| 79 else | |
| 80 #endif | |
| 81 #ifdef FEAT_DIFF | |
| 82 if (lnum == wp->w_topline) | |
| 83 n = plines_win_nofill(wp, lnum, TRUE) + wp->w_topfill; | |
| 84 else | |
| 85 #endif | |
| 86 n = plines_win(wp, lnum, TRUE); | |
| 87 if ( | |
| 88 #ifdef FEAT_FOLDING | |
| 89 lnum <= wp->w_cursor.lnum && last >= wp->w_cursor.lnum | |
| 90 #else | |
| 91 lnum == wp->w_cursor.lnum | |
| 92 #endif | |
| 93 ) | |
| 94 { | |
| 95 wp->w_cline_row = done; | |
| 96 wp->w_cline_height = n; | |
| 97 #ifdef FEAT_FOLDING | |
| 98 wp->w_cline_folded = folded; | |
| 99 #endif | |
| 5764 | 100 redraw_for_cursorline(wp); |
| 7 | 101 wp->w_valid |= (VALID_CROW|VALID_CHEIGHT); |
| 102 } | |
| 103 if (done + n > wp->w_height) | |
| 104 break; | |
| 105 done += n; | |
| 106 #ifdef FEAT_FOLDING | |
| 107 lnum = last; | |
| 108 #endif | |
| 109 } | |
| 110 | |
| 111 /* wp->w_botline is the line that is just below the window */ | |
| 112 wp->w_botline = lnum; | |
| 113 wp->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 114 | |
| 115 set_empty_rows(wp, done); | |
| 116 } | |
| 117 | |
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118 #ifdef FEAT_SYN_HL |
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119 void |
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120 reset_cursorline(void) |
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121 { |
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122 curwin->w_last_cursorline = 0; |
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123 } |
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124 #endif |
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125 |
| 7 | 126 /* |
| 5764 | 127 * Redraw when w_cline_row changes and 'relativenumber' or 'cursorline' is |
| 128 * set. | |
| 129 */ | |
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130 void |
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131 redraw_for_cursorline(win_T *wp) |
| 5764 | 132 { |
| 133 if ((wp->w_p_rnu | |
| 134 #ifdef FEAT_SYN_HL | |
| 135 || wp->w_p_cul | |
| 136 #endif | |
| 137 ) | |
| 138 && (wp->w_valid & VALID_CROW) == 0 | |
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139 && !pum_visible()) |
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140 { |
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141 if (wp->w_p_rnu) |
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142 // win_line() will redraw the number column only. |
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143 redraw_win_later(wp, VALID); |
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144 #ifdef FEAT_SYN_HL |
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145 if (wp->w_p_cul) |
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146 { |
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147 if (wp->w_redr_type <= VALID && wp->w_last_cursorline != 0) |
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148 { |
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149 // "w_last_cursorline" may be outdated, worst case we redraw |
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150 // too much. This is optimized for moving the cursor around in |
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151 // the current window. |
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152 redrawWinline(wp, wp->w_last_cursorline); |
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153 redrawWinline(wp, wp->w_cursor.lnum); |
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154 } |
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155 else |
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156 redraw_win_later(wp, SOME_VALID); |
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157 } |
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158 #endif |
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159 } |
| 5764 | 160 } |
| 161 | |
| 162 /* | |
| 7 | 163 * Update curwin->w_topline and redraw if necessary. |
| 164 * Used to update the screen before printing a message. | |
| 165 */ | |
| 166 void | |
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167 update_topline_redraw(void) |
| 7 | 168 { |
| 169 update_topline(); | |
| 170 if (must_redraw) | |
| 171 update_screen(0); | |
| 172 } | |
| 173 | |
| 174 /* | |
| 175 * Update curwin->w_topline to move the cursor onto the screen. | |
| 176 */ | |
| 177 void | |
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178 update_topline(void) |
| 7 | 179 { |
| 180 long line_count; | |
| 181 int halfheight; | |
| 182 int n; | |
| 183 linenr_T old_topline; | |
| 184 #ifdef FEAT_DIFF | |
| 185 int old_topfill; | |
| 186 #endif | |
| 187 #ifdef FEAT_FOLDING | |
| 188 linenr_T lnum; | |
| 189 #endif | |
| 190 int check_topline = FALSE; | |
| 191 int check_botline = FALSE; | |
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192 long *so_ptr = curwin->w_p_so >= 0 ? &curwin->w_p_so : &p_so; |
| 7 | 193 #ifdef FEAT_MOUSE |
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194 int save_so = *so_ptr; |
| 7 | 195 #endif |
| 196 | |
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197 /* If there is no valid screen and when the window height is zero just use |
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198 * the cursor line. */ |
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199 if (!screen_valid(TRUE) || curwin->w_height == 0) |
| 6247 | 200 { |
| 201 curwin->w_topline = curwin->w_cursor.lnum; | |
| 202 curwin->w_botline = curwin->w_topline; | |
| 203 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 204 curwin->w_scbind_pos = 1; | |
| 205 return; | |
| 206 } | |
| 207 | |
| 7 | 208 check_cursor_moved(curwin); |
| 209 if (curwin->w_valid & VALID_TOPLINE) | |
| 210 return; | |
| 211 | |
| 212 #ifdef FEAT_MOUSE | |
| 213 /* When dragging with the mouse, don't scroll that quickly */ | |
| 1121 | 214 if (mouse_dragging > 0) |
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215 *so_ptr = mouse_dragging - 1; |
| 7 | 216 #endif |
| 217 | |
| 218 old_topline = curwin->w_topline; | |
| 219 #ifdef FEAT_DIFF | |
| 220 old_topfill = curwin->w_topfill; | |
| 221 #endif | |
| 222 | |
| 223 /* | |
| 224 * If the buffer is empty, always set topline to 1. | |
| 225 */ | |
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226 if (BUFEMPTY()) /* special case - file is empty */ |
| 7 | 227 { |
| 228 if (curwin->w_topline != 1) | |
| 229 redraw_later(NOT_VALID); | |
| 230 curwin->w_topline = 1; | |
| 231 curwin->w_botline = 2; | |
| 232 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 233 curwin->w_scbind_pos = 1; | |
| 234 } | |
| 235 | |
| 236 /* | |
| 237 * If the cursor is above or near the top of the window, scroll the window | |
| 238 * to show the line the cursor is in, with 'scrolloff' context. | |
| 239 */ | |
| 240 else | |
| 241 { | |
| 242 if (curwin->w_topline > 1) | |
| 243 { | |
| 244 /* If the cursor is above topline, scrolling is always needed. | |
| 245 * If the cursor is far below topline and there is no folding, | |
| 246 * scrolling down is never needed. */ | |
| 247 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 248 check_topline = TRUE; | |
| 249 else if (check_top_offset()) | |
| 250 check_topline = TRUE; | |
| 251 } | |
| 252 #ifdef FEAT_DIFF | |
| 253 /* Check if there are more filler lines than allowed. */ | |
| 254 if (!check_topline && curwin->w_topfill > diff_check_fill(curwin, | |
| 255 curwin->w_topline)) | |
| 256 check_topline = TRUE; | |
| 257 #endif | |
| 258 | |
| 259 if (check_topline) | |
| 260 { | |
| 261 halfheight = curwin->w_height / 2 - 1; | |
| 262 if (halfheight < 2) | |
| 263 halfheight = 2; | |
| 264 | |
| 265 #ifdef FEAT_FOLDING | |
| 266 if (hasAnyFolding(curwin)) | |
| 267 { | |
| 268 /* Count the number of logical lines between the cursor and | |
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269 * topline + scrolloff (approximation of how much will be |
| 7 | 270 * scrolled). */ |
| 271 n = 0; | |
| 272 for (lnum = curwin->w_cursor.lnum; | |
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273 lnum < curwin->w_topline + *so_ptr; ++lnum) |
| 7 | 274 { |
| 275 ++n; | |
| 276 /* stop at end of file or when we know we are far off */ | |
| 277 if (lnum >= curbuf->b_ml.ml_line_count || n >= halfheight) | |
| 278 break; | |
| 279 (void)hasFolding(lnum, NULL, &lnum); | |
| 280 } | |
| 281 } | |
| 282 else | |
| 283 #endif | |
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284 n = curwin->w_topline + *so_ptr - curwin->w_cursor.lnum; |
| 7 | 285 |
| 286 /* If we weren't very close to begin with, we scroll to put the | |
| 287 * cursor in the middle of the window. Otherwise put the cursor | |
| 288 * near the top of the window. */ | |
| 289 if (n >= halfheight) | |
| 290 scroll_cursor_halfway(FALSE); | |
| 291 else | |
| 292 { | |
| 532 | 293 scroll_cursor_top(scrolljump_value(), FALSE); |
| 7 | 294 check_botline = TRUE; |
| 295 } | |
| 296 } | |
| 297 | |
| 298 else | |
| 299 { | |
| 300 #ifdef FEAT_FOLDING | |
| 301 /* Make sure topline is the first line of a fold. */ | |
| 302 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 303 #endif | |
| 304 check_botline = TRUE; | |
| 305 } | |
| 306 } | |
| 307 | |
| 308 /* | |
| 309 * If the cursor is below the bottom of the window, scroll the window | |
| 310 * to put the cursor on the window. | |
| 311 * When w_botline is invalid, recompute it first, to avoid a redraw later. | |
| 312 * If w_botline was approximated, we might need a redraw later in a few | |
| 313 * cases, but we don't want to spend (a lot of) time recomputing w_botline | |
| 314 * for every small change. | |
| 315 */ | |
| 316 if (check_botline) | |
| 317 { | |
| 318 if (!(curwin->w_valid & VALID_BOTLINE_AP)) | |
| 319 validate_botline(); | |
| 320 | |
| 321 if (curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 322 { | |
| 1744 | 323 if (curwin->w_cursor.lnum < curwin->w_botline) |
| 324 { | |
| 325 if (((long)curwin->w_cursor.lnum | |
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326 >= (long)curwin->w_botline - *so_ptr |
| 7 | 327 #ifdef FEAT_FOLDING |
| 328 || hasAnyFolding(curwin) | |
| 329 #endif | |
| 330 )) | |
| 1744 | 331 { |
| 7 | 332 lineoff_T loff; |
| 333 | |
| 1744 | 334 /* Cursor is (a few lines) above botline, check if there are |
| 335 * 'scrolloff' window lines below the cursor. If not, need to | |
| 336 * scroll. */ | |
| 7 | 337 n = curwin->w_empty_rows; |
| 338 loff.lnum = curwin->w_cursor.lnum; | |
| 339 #ifdef FEAT_FOLDING | |
| 340 /* In a fold go to its last line. */ | |
| 341 (void)hasFolding(loff.lnum, NULL, &loff.lnum); | |
| 342 #endif | |
| 343 #ifdef FEAT_DIFF | |
| 344 loff.fill = 0; | |
| 345 n += curwin->w_filler_rows; | |
| 346 #endif | |
| 347 loff.height = 0; | |
| 348 while (loff.lnum < curwin->w_botline | |
| 349 #ifdef FEAT_DIFF | |
| 350 && (loff.lnum + 1 < curwin->w_botline || loff.fill == 0) | |
| 351 #endif | |
| 352 ) | |
| 353 { | |
| 354 n += loff.height; | |
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355 if (n >= *so_ptr) |
| 7 | 356 break; |
| 357 botline_forw(&loff); | |
| 358 } | |
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359 if (n >= *so_ptr) |
| 7 | 360 /* sufficient context, no need to scroll */ |
| 361 check_botline = FALSE; | |
| 1744 | 362 } |
| 363 else | |
| 364 /* sufficient context, no need to scroll */ | |
| 365 check_botline = FALSE; | |
| 7 | 366 } |
| 367 if (check_botline) | |
| 368 { | |
| 369 #ifdef FEAT_FOLDING | |
| 370 if (hasAnyFolding(curwin)) | |
| 371 { | |
| 372 /* Count the number of logical lines between the cursor and | |
|
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373 * botline - scrolloff (approximation of how much will be |
| 7 | 374 * scrolled). */ |
| 375 line_count = 0; | |
| 376 for (lnum = curwin->w_cursor.lnum; | |
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377 lnum >= curwin->w_botline - *so_ptr; --lnum) |
| 7 | 378 { |
| 379 ++line_count; | |
| 380 /* stop at end of file or when we know we are far off */ | |
| 381 if (lnum <= 0 || line_count > curwin->w_height + 1) | |
| 382 break; | |
| 383 (void)hasFolding(lnum, &lnum, NULL); | |
| 384 } | |
| 385 } | |
| 386 else | |
| 387 #endif | |
| 388 line_count = curwin->w_cursor.lnum - curwin->w_botline | |
|
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389 + 1 + *so_ptr; |
| 7 | 390 if (line_count <= curwin->w_height + 1) |
| 532 | 391 scroll_cursor_bot(scrolljump_value(), FALSE); |
| 7 | 392 else |
| 393 scroll_cursor_halfway(FALSE); | |
| 394 } | |
| 395 } | |
| 396 } | |
| 397 curwin->w_valid |= VALID_TOPLINE; | |
| 398 | |
| 399 /* | |
| 400 * Need to redraw when topline changed. | |
| 401 */ | |
| 402 if (curwin->w_topline != old_topline | |
| 403 #ifdef FEAT_DIFF | |
| 404 || curwin->w_topfill != old_topfill | |
| 405 #endif | |
| 406 ) | |
| 407 { | |
| 3318 | 408 dollar_vcol = -1; |
| 740 | 409 if (curwin->w_skipcol != 0) |
| 7 | 410 { |
| 411 curwin->w_skipcol = 0; | |
| 412 redraw_later(NOT_VALID); | |
| 413 } | |
| 414 else | |
| 415 redraw_later(VALID); | |
| 416 /* May need to set w_skipcol when cursor in w_topline. */ | |
| 417 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 418 validate_cursor(); | |
| 419 } | |
| 420 | |
| 421 #ifdef FEAT_MOUSE | |
|
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422 *so_ptr = save_so; |
| 7 | 423 #endif |
| 424 } | |
| 425 | |
| 426 /* | |
| 532 | 427 * Return the scrolljump value to use for the current window. |
| 428 * When 'scrolljump' is positive use it as-is. | |
| 429 * When 'scrolljump' is negative use it as a percentage of the window height. | |
| 430 */ | |
| 431 static int | |
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432 scrolljump_value(void) |
| 532 | 433 { |
| 434 if (p_sj >= 0) | |
| 435 return (int)p_sj; | |
| 436 return (curwin->w_height * -p_sj) / 100; | |
| 437 } | |
| 438 | |
| 439 /* | |
| 7 | 440 * Return TRUE when there are not 'scrolloff' lines above the cursor for the |
| 441 * current window. | |
| 442 */ | |
| 443 static int | |
|
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444 check_top_offset(void) |
| 7 | 445 { |
| 446 lineoff_T loff; | |
| 447 int n; | |
|
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448 long so = get_scrolloff_value(); |
| 7 | 449 |
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450 if (curwin->w_cursor.lnum < curwin->w_topline + so |
| 7 | 451 #ifdef FEAT_FOLDING |
| 452 || hasAnyFolding(curwin) | |
| 453 #endif | |
| 454 ) | |
| 455 { | |
| 456 loff.lnum = curwin->w_cursor.lnum; | |
| 457 #ifdef FEAT_DIFF | |
| 458 loff.fill = 0; | |
| 459 n = curwin->w_topfill; /* always have this context */ | |
| 460 #else | |
| 461 n = 0; | |
| 462 #endif | |
| 463 /* Count the visible screen lines above the cursor line. */ | |
|
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464 while (n < so) |
| 7 | 465 { |
| 466 topline_back(&loff); | |
| 467 /* Stop when included a line above the window. */ | |
| 468 if (loff.lnum < curwin->w_topline | |
| 469 #ifdef FEAT_DIFF | |
| 470 || (loff.lnum == curwin->w_topline && loff.fill > 0) | |
| 471 #endif | |
| 472 ) | |
| 473 break; | |
| 474 n += loff.height; | |
| 475 } | |
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476 if (n < so) |
| 7 | 477 return TRUE; |
| 478 } | |
| 479 return FALSE; | |
| 480 } | |
| 481 | |
| 482 void | |
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483 update_curswant(void) |
| 7 | 484 { |
| 485 if (curwin->w_set_curswant) | |
| 486 { | |
| 487 validate_virtcol(); | |
| 488 curwin->w_curswant = curwin->w_virtcol; | |
| 489 curwin->w_set_curswant = FALSE; | |
| 490 } | |
| 491 } | |
| 492 | |
| 493 /* | |
| 494 * Check if the cursor has moved. Set the w_valid flag accordingly. | |
| 495 */ | |
| 496 void | |
|
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497 check_cursor_moved(win_T *wp) |
| 7 | 498 { |
| 499 if (wp->w_cursor.lnum != wp->w_valid_cursor.lnum) | |
| 500 { | |
| 501 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 502 |VALID_CHEIGHT|VALID_CROW|VALID_TOPLINE); | |
| 503 wp->w_valid_cursor = wp->w_cursor; | |
| 504 wp->w_valid_leftcol = wp->w_leftcol; | |
| 505 } | |
| 506 else if (wp->w_cursor.col != wp->w_valid_cursor.col | |
| 507 || wp->w_leftcol != wp->w_valid_leftcol | |
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508 || wp->w_cursor.coladd != wp->w_valid_cursor.coladd) |
| 7 | 509 { |
| 510 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL); | |
| 511 wp->w_valid_cursor.col = wp->w_cursor.col; | |
| 512 wp->w_valid_leftcol = wp->w_leftcol; | |
| 513 wp->w_valid_cursor.coladd = wp->w_cursor.coladd; | |
| 514 } | |
| 515 } | |
| 516 | |
| 517 /* | |
| 518 * Call this function when some window settings have changed, which require | |
| 519 * the cursor position, botline and topline to be recomputed and the window to | |
| 520 * be redrawn. E.g, when changing the 'wrap' option or folding. | |
| 521 */ | |
| 522 void | |
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523 changed_window_setting(void) |
| 7 | 524 { |
| 525 changed_window_setting_win(curwin); | |
| 526 } | |
| 527 | |
| 528 void | |
|
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529 changed_window_setting_win(win_T *wp) |
| 7 | 530 { |
| 531 wp->w_lines_valid = 0; | |
| 532 changed_line_abv_curs_win(wp); | |
| 533 wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP|VALID_TOPLINE); | |
| 534 redraw_win_later(wp, NOT_VALID); | |
| 535 } | |
| 536 | |
| 537 /* | |
| 538 * Set wp->w_topline to a certain number. | |
| 539 */ | |
| 540 void | |
|
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541 set_topline(win_T *wp, linenr_T lnum) |
| 7 | 542 { |
| 543 #ifdef FEAT_FOLDING | |
| 544 /* go to first of folded lines */ | |
| 545 (void)hasFoldingWin(wp, lnum, &lnum, NULL, TRUE, NULL); | |
| 546 #endif | |
| 547 /* Approximate the value of w_botline */ | |
| 548 wp->w_botline += lnum - wp->w_topline; | |
| 549 wp->w_topline = lnum; | |
| 1744 | 550 wp->w_topline_was_set = TRUE; |
| 7 | 551 #ifdef FEAT_DIFF |
| 552 wp->w_topfill = 0; | |
| 553 #endif | |
| 554 wp->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_TOPLINE); | |
| 555 /* Don't set VALID_TOPLINE here, 'scrolloff' needs to be checked. */ | |
| 556 redraw_later(VALID); | |
| 557 } | |
| 558 | |
| 559 /* | |
| 560 * Call this function when the length of the cursor line (in screen | |
| 561 * characters) has changed, and the change is before the cursor. | |
| 562 * Need to take care of w_botline separately! | |
| 563 */ | |
| 564 void | |
|
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565 changed_cline_bef_curs(void) |
| 7 | 566 { |
| 567 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 568 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 569 } | |
| 570 | |
| 571 void | |
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572 changed_cline_bef_curs_win(win_T *wp) |
| 7 | 573 { |
| 574 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 575 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 576 } | |
| 577 | |
| 578 /* | |
| 579 * Call this function when the length of a line (in screen characters) above | |
| 580 * the cursor have changed. | |
| 581 * Need to take care of w_botline separately! | |
| 582 */ | |
| 583 void | |
|
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584 changed_line_abv_curs(void) |
| 7 | 585 { |
| 586 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
| 587 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 588 } | |
| 589 | |
| 590 void | |
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591 changed_line_abv_curs_win(win_T *wp) |
| 7 | 592 { |
| 593 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
| 594 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 595 } | |
| 596 | |
| 597 /* | |
| 598 * Make sure the value of curwin->w_botline is valid. | |
| 599 */ | |
| 600 void | |
|
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601 validate_botline(void) |
| 7 | 602 { |
| 603 if (!(curwin->w_valid & VALID_BOTLINE)) | |
| 604 comp_botline(curwin); | |
| 605 } | |
| 606 | |
| 607 /* | |
| 608 * Mark curwin->w_botline as invalid (because of some change in the buffer). | |
| 609 */ | |
| 610 void | |
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611 invalidate_botline(void) |
| 7 | 612 { |
| 613 curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 614 } | |
| 615 | |
| 616 void | |
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617 invalidate_botline_win(win_T *wp) |
| 7 | 618 { |
| 619 wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 620 } | |
| 621 | |
| 622 void | |
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623 approximate_botline_win( |
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624 win_T *wp) |
| 7 | 625 { |
| 626 wp->w_valid &= ~VALID_BOTLINE; | |
| 627 } | |
| 628 | |
| 629 /* | |
| 630 * Return TRUE if curwin->w_wrow and curwin->w_wcol are valid. | |
| 631 */ | |
| 632 int | |
|
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633 cursor_valid(void) |
| 7 | 634 { |
| 635 check_cursor_moved(curwin); | |
| 636 return ((curwin->w_valid & (VALID_WROW|VALID_WCOL)) == | |
| 637 (VALID_WROW|VALID_WCOL)); | |
| 638 } | |
| 639 | |
| 640 /* | |
| 641 * Validate cursor position. Makes sure w_wrow and w_wcol are valid. | |
| 642 * w_topline must be valid, you may need to call update_topline() first! | |
| 643 */ | |
| 644 void | |
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645 validate_cursor(void) |
| 7 | 646 { |
| 647 check_cursor_moved(curwin); | |
| 648 if ((curwin->w_valid & (VALID_WCOL|VALID_WROW)) != (VALID_WCOL|VALID_WROW)) | |
| 649 curs_columns(TRUE); | |
| 650 } | |
| 651 | |
| 652 #if defined(FEAT_GUI) || defined(PROTO) | |
| 653 /* | |
| 654 * validate w_cline_row. | |
| 655 */ | |
| 656 void | |
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657 validate_cline_row(void) |
| 7 | 658 { |
| 659 /* | |
| 660 * First make sure that w_topline is valid (after moving the cursor). | |
| 661 */ | |
| 662 update_topline(); | |
| 663 check_cursor_moved(curwin); | |
| 664 if (!(curwin->w_valid & VALID_CROW)) | |
| 6441 | 665 curs_rows(curwin); |
| 7 | 666 } |
| 667 #endif | |
| 668 | |
| 669 /* | |
| 670 * Compute wp->w_cline_row and wp->w_cline_height, based on the current value | |
|
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671 * of wp->w_topline. |
| 7 | 672 */ |
| 673 static void | |
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674 curs_rows(win_T *wp) |
| 7 | 675 { |
| 676 linenr_T lnum; | |
| 677 int i; | |
| 678 int all_invalid; | |
| 679 int valid; | |
| 680 #ifdef FEAT_FOLDING | |
| 681 long fold_count; | |
| 682 #endif | |
| 683 | |
| 684 /* Check if wp->w_lines[].wl_size is invalid */ | |
| 685 all_invalid = (!redrawing() | |
| 686 || wp->w_lines_valid == 0 | |
| 687 || wp->w_lines[0].wl_lnum > wp->w_topline); | |
| 688 i = 0; | |
| 689 wp->w_cline_row = 0; | |
| 690 for (lnum = wp->w_topline; lnum < wp->w_cursor.lnum; ++i) | |
| 691 { | |
| 692 valid = FALSE; | |
| 693 if (!all_invalid && i < wp->w_lines_valid) | |
| 694 { | |
| 695 if (wp->w_lines[i].wl_lnum < lnum || !wp->w_lines[i].wl_valid) | |
| 696 continue; /* skip changed or deleted lines */ | |
| 697 if (wp->w_lines[i].wl_lnum == lnum) | |
| 698 { | |
| 699 #ifdef FEAT_FOLDING | |
| 700 /* Check for newly inserted lines below this row, in which | |
| 701 * case we need to check for folded lines. */ | |
| 702 if (!wp->w_buffer->b_mod_set | |
| 703 || wp->w_lines[i].wl_lastlnum < wp->w_cursor.lnum | |
| 704 || wp->w_buffer->b_mod_top | |
| 705 > wp->w_lines[i].wl_lastlnum + 1) | |
| 706 #endif | |
| 707 valid = TRUE; | |
| 708 } | |
| 709 else if (wp->w_lines[i].wl_lnum > lnum) | |
| 710 --i; /* hold at inserted lines */ | |
| 711 } | |
| 712 if (valid | |
| 713 #ifdef FEAT_DIFF | |
| 714 && (lnum != wp->w_topline || !wp->w_p_diff) | |
| 715 #endif | |
| 716 ) | |
| 717 { | |
| 718 #ifdef FEAT_FOLDING | |
| 719 lnum = wp->w_lines[i].wl_lastlnum + 1; | |
| 720 /* Cursor inside folded lines, don't count this row */ | |
| 721 if (lnum > wp->w_cursor.lnum) | |
| 722 break; | |
| 723 #else | |
| 724 ++lnum; | |
| 725 #endif | |
| 726 wp->w_cline_row += wp->w_lines[i].wl_size; | |
| 727 } | |
| 728 else | |
| 729 { | |
| 730 #ifdef FEAT_FOLDING | |
| 731 fold_count = foldedCount(wp, lnum, NULL); | |
| 732 if (fold_count) | |
| 733 { | |
| 734 lnum += fold_count; | |
| 735 if (lnum > wp->w_cursor.lnum) | |
| 736 break; | |
| 737 ++wp->w_cline_row; | |
| 738 } | |
| 739 else | |
| 740 #endif | |
| 741 #ifdef FEAT_DIFF | |
| 742 if (lnum == wp->w_topline) | |
| 743 wp->w_cline_row += plines_win_nofill(wp, lnum++, TRUE) | |
| 744 + wp->w_topfill; | |
| 745 else | |
| 746 #endif | |
| 747 wp->w_cline_row += plines_win(wp, lnum++, TRUE); | |
| 748 } | |
| 749 } | |
| 750 | |
| 751 check_cursor_moved(wp); | |
| 752 if (!(wp->w_valid & VALID_CHEIGHT)) | |
| 753 { | |
| 754 if (all_invalid | |
| 755 || i == wp->w_lines_valid | |
| 756 || (i < wp->w_lines_valid | |
| 757 && (!wp->w_lines[i].wl_valid | |
| 758 || wp->w_lines[i].wl_lnum != wp->w_cursor.lnum))) | |
| 759 { | |
| 760 #ifdef FEAT_DIFF | |
| 761 if (wp->w_cursor.lnum == wp->w_topline) | |
| 762 wp->w_cline_height = plines_win_nofill(wp, wp->w_cursor.lnum, | |
| 763 TRUE) + wp->w_topfill; | |
| 764 else | |
| 765 #endif | |
| 766 wp->w_cline_height = plines_win(wp, wp->w_cursor.lnum, TRUE); | |
| 767 #ifdef FEAT_FOLDING | |
| 768 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
| 769 NULL, NULL, TRUE, NULL); | |
| 770 #endif | |
| 771 } | |
| 772 else if (i > wp->w_lines_valid) | |
| 773 { | |
| 774 /* a line that is too long to fit on the last screen line */ | |
| 775 wp->w_cline_height = 0; | |
| 776 #ifdef FEAT_FOLDING | |
| 777 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
| 778 NULL, NULL, TRUE, NULL); | |
| 779 #endif | |
| 780 } | |
| 781 else | |
| 782 { | |
| 783 wp->w_cline_height = wp->w_lines[i].wl_size; | |
| 784 #ifdef FEAT_FOLDING | |
| 785 wp->w_cline_folded = wp->w_lines[i].wl_folded; | |
| 786 #endif | |
| 787 } | |
| 788 } | |
| 789 | |
| 5764 | 790 redraw_for_cursorline(curwin); |
| 7 | 791 wp->w_valid |= VALID_CROW|VALID_CHEIGHT; |
| 792 | |
| 793 } | |
| 794 | |
| 795 /* | |
| 796 * Validate curwin->w_virtcol only. | |
| 797 */ | |
| 798 void | |
|
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799 validate_virtcol(void) |
| 7 | 800 { |
| 801 validate_virtcol_win(curwin); | |
| 802 } | |
| 803 | |
| 804 /* | |
| 805 * Validate wp->w_virtcol only. | |
| 806 */ | |
| 807 void | |
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808 validate_virtcol_win(win_T *wp) |
| 7 | 809 { |
| 810 check_cursor_moved(wp); | |
| 811 if (!(wp->w_valid & VALID_VIRTCOL)) | |
| 812 { | |
| 813 getvvcol(wp, &wp->w_cursor, NULL, &(wp->w_virtcol), NULL); | |
| 814 wp->w_valid |= VALID_VIRTCOL; | |
| 740 | 815 #ifdef FEAT_SYN_HL |
|
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816 if (wp->w_p_cuc && !pum_visible()) |
| 740 | 817 redraw_win_later(wp, SOME_VALID); |
| 818 #endif | |
| 7 | 819 } |
| 820 } | |
| 821 | |
| 822 /* | |
| 823 * Validate curwin->w_cline_height only. | |
| 824 */ | |
| 825 static void | |
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826 validate_cheight(void) |
| 7 | 827 { |
| 828 check_cursor_moved(curwin); | |
| 829 if (!(curwin->w_valid & VALID_CHEIGHT)) | |
| 830 { | |
| 831 #ifdef FEAT_DIFF | |
| 832 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 833 curwin->w_cline_height = plines_nofill(curwin->w_cursor.lnum) | |
| 834 + curwin->w_topfill; | |
| 835 else | |
| 836 #endif | |
| 837 curwin->w_cline_height = plines(curwin->w_cursor.lnum); | |
| 838 #ifdef FEAT_FOLDING | |
| 839 curwin->w_cline_folded = hasFolding(curwin->w_cursor.lnum, NULL, NULL); | |
| 840 #endif | |
| 841 curwin->w_valid |= VALID_CHEIGHT; | |
| 842 } | |
| 843 } | |
| 844 | |
| 845 /* | |
| 1668 | 846 * Validate w_wcol and w_virtcol only. |
| 7 | 847 */ |
| 848 void | |
|
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849 validate_cursor_col(void) |
| 7 | 850 { |
| 851 colnr_T off; | |
| 852 colnr_T col; | |
|
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853 int width; |
| 7 | 854 |
| 855 validate_virtcol(); | |
| 856 if (!(curwin->w_valid & VALID_WCOL)) | |
| 857 { | |
| 858 col = curwin->w_virtcol; | |
| 859 off = curwin_col_off(); | |
| 860 col += off; | |
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861 width = curwin->w_width - off + curwin_col_off2(); |
| 7 | 862 |
| 863 /* long line wrapping, adjust curwin->w_wrow */ | |
| 1668 | 864 if (curwin->w_p_wrap |
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865 && col >= (colnr_T)curwin->w_width |
|
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866 && width > 0) |
|
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867 /* use same formula as what is used in curs_columns() */ |
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868 col -= ((col - curwin->w_width) / width + 1) * width; |
| 1668 | 869 if (col > (int)curwin->w_leftcol) |
| 870 col -= curwin->w_leftcol; | |
| 871 else | |
| 872 col = 0; | |
| 7 | 873 curwin->w_wcol = col; |
| 1668 | 874 |
| 7 | 875 curwin->w_valid |= VALID_WCOL; |
| 876 } | |
| 877 } | |
| 878 | |
| 879 /* | |
|
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880 * Compute offset of a window, occupied by absolute or relative line number, |
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881 * fold column and sign column (these don't move when scrolling horizontally). |
| 7 | 882 */ |
| 883 int | |
|
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884 win_col_off(win_T *wp) |
| 7 | 885 { |
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886 return (((wp->w_p_nu || wp->w_p_rnu) ? number_width(wp) + 1 : 0) |
| 7 | 887 #ifdef FEAT_CMDWIN |
| 888 + (cmdwin_type == 0 || wp != curwin ? 0 : 1) | |
| 889 #endif | |
| 890 #ifdef FEAT_FOLDING | |
| 891 + wp->w_p_fdc | |
| 892 #endif | |
| 893 #ifdef FEAT_SIGNS | |
|
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894 + (signcolumn_on(wp) ? 2 : 0) |
| 7 | 895 #endif |
| 896 ); | |
| 897 } | |
| 898 | |
| 899 int | |
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900 curwin_col_off(void) |
| 7 | 901 { |
| 902 return win_col_off(curwin); | |
| 903 } | |
| 904 | |
| 905 /* | |
| 906 * Return the difference in column offset for the second screen line of a | |
|
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907 * wrapped line. It's 8 if 'number' or 'relativenumber' is on and 'n' is in |
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908 * 'cpoptions'. |
| 7 | 909 */ |
| 910 int | |
|
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911 win_col_off2(win_T *wp) |
| 7 | 912 { |
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913 if ((wp->w_p_nu || wp->w_p_rnu) && vim_strchr(p_cpo, CPO_NUMCOL) != NULL) |
| 13 | 914 return number_width(wp) + 1; |
| 7 | 915 return 0; |
| 916 } | |
| 917 | |
| 918 int | |
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919 curwin_col_off2(void) |
| 7 | 920 { |
| 921 return win_col_off2(curwin); | |
| 922 } | |
| 923 | |
| 924 /* | |
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925 * Compute curwin->w_wcol and curwin->w_virtcol. |
| 7 | 926 * Also updates curwin->w_wrow and curwin->w_cline_row. |
| 927 * Also updates curwin->w_leftcol. | |
| 928 */ | |
| 929 void | |
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930 curs_columns( |
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931 int may_scroll) /* when TRUE, may scroll horizontally */ |
| 7 | 932 { |
| 933 int diff; | |
| 934 int extra; /* offset for first screen line */ | |
| 935 int off_left, off_right; | |
| 936 int n; | |
| 937 int p_lines; | |
| 938 int width = 0; | |
| 939 int textwidth; | |
| 940 int new_leftcol; | |
| 941 colnr_T startcol; | |
| 942 colnr_T endcol; | |
| 943 colnr_T prev_skipcol; | |
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944 long so = get_scrolloff_value(); |
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945 long siso = get_sidescrolloff_value(); |
| 7 | 946 |
| 947 /* | |
| 948 * First make sure that w_topline is valid (after moving the cursor). | |
| 949 */ | |
| 950 update_topline(); | |
| 951 | |
| 952 /* | |
| 953 * Next make sure that w_cline_row is valid. | |
| 954 */ | |
| 955 if (!(curwin->w_valid & VALID_CROW)) | |
| 6441 | 956 curs_rows(curwin); |
| 7 | 957 |
| 958 /* | |
| 959 * Compute the number of virtual columns. | |
| 960 */ | |
| 961 #ifdef FEAT_FOLDING | |
| 962 if (curwin->w_cline_folded) | |
| 963 /* In a folded line the cursor is always in the first column */ | |
| 964 startcol = curwin->w_virtcol = endcol = curwin->w_leftcol; | |
| 965 else | |
| 966 #endif | |
| 967 getvvcol(curwin, &curwin->w_cursor, | |
| 968 &startcol, &(curwin->w_virtcol), &endcol); | |
| 969 | |
| 970 /* remove '$' from change command when cursor moves onto it */ | |
| 971 if (startcol > dollar_vcol) | |
| 3318 | 972 dollar_vcol = -1; |
| 7 | 973 |
| 974 extra = curwin_col_off(); | |
| 975 curwin->w_wcol = curwin->w_virtcol + extra; | |
| 976 endcol += extra; | |
| 977 | |
| 978 /* | |
| 979 * Now compute w_wrow, counting screen lines from w_cline_row. | |
| 980 */ | |
| 981 curwin->w_wrow = curwin->w_cline_row; | |
| 982 | |
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983 textwidth = curwin->w_width - extra; |
| 7 | 984 if (textwidth <= 0) |
| 985 { | |
| 986 /* No room for text, put cursor in last char of window. */ | |
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987 curwin->w_wcol = curwin->w_width - 1; |
| 7 | 988 curwin->w_wrow = curwin->w_height - 1; |
| 989 } | |
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990 else if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 991 { |
| 992 width = textwidth + curwin_col_off2(); | |
| 993 | |
| 994 /* long line wrapping, adjust curwin->w_wrow */ | |
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995 if (curwin->w_wcol >= curwin->w_width) |
| 7 | 996 { |
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997 /* this same formula is used in validate_cursor_col() */ |
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998 n = (curwin->w_wcol - curwin->w_width) / width + 1; |
| 7 | 999 curwin->w_wcol -= n * width; |
| 1000 curwin->w_wrow += n; | |
| 1001 | |
| 1002 #ifdef FEAT_LINEBREAK | |
| 1003 /* When cursor wraps to first char of next line in Insert | |
| 1004 * mode, the 'showbreak' string isn't shown, backup to first | |
| 1005 * column */ | |
| 1006 if (*p_sbr && *ml_get_cursor() == NUL | |
| 1007 && curwin->w_wcol == (int)vim_strsize(p_sbr)) | |
| 1008 curwin->w_wcol = 0; | |
| 1009 #endif | |
| 1010 } | |
| 1011 } | |
| 1012 | |
| 1013 /* No line wrapping: compute curwin->w_leftcol if scrolling is on and line | |
| 1014 * is not folded. | |
| 1015 * If scrolling is off, curwin->w_leftcol is assumed to be 0 */ | |
| 3263 | 1016 else if (may_scroll |
| 7 | 1017 #ifdef FEAT_FOLDING |
| 1018 && !curwin->w_cline_folded | |
| 1019 #endif | |
| 1020 ) | |
| 1021 { | |
| 1022 /* | |
| 1023 * If Cursor is left of the screen, scroll rightwards. | |
| 1024 * If Cursor is right of the screen, scroll leftwards | |
| 1025 * If we get closer to the edge than 'sidescrolloff', scroll a little | |
| 1026 * extra | |
| 1027 */ | |
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1028 off_left = (int)startcol - (int)curwin->w_leftcol - siso; |
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1029 off_right = (int)endcol - (int)(curwin->w_leftcol + curwin->w_width |
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1030 - siso) + 1; |
| 7 | 1031 if (off_left < 0 || off_right > 0) |
| 1032 { | |
| 1033 if (off_left < 0) | |
| 1034 diff = -off_left; | |
| 1035 else | |
| 1036 diff = off_right; | |
| 1037 | |
| 1038 /* When far off or not enough room on either side, put cursor in | |
| 1039 * middle of window. */ | |
| 1040 if (p_ss == 0 || diff >= textwidth / 2 || off_right >= off_left) | |
| 1041 new_leftcol = curwin->w_wcol - extra - textwidth / 2; | |
| 1042 else | |
| 1043 { | |
| 1044 if (diff < p_ss) | |
| 1045 diff = p_ss; | |
| 1046 if (off_left < 0) | |
| 1047 new_leftcol = curwin->w_leftcol - diff; | |
| 1048 else | |
| 1049 new_leftcol = curwin->w_leftcol + diff; | |
| 1050 } | |
| 1051 if (new_leftcol < 0) | |
| 1052 new_leftcol = 0; | |
| 1053 if (new_leftcol != (int)curwin->w_leftcol) | |
| 1054 { | |
| 1055 curwin->w_leftcol = new_leftcol; | |
| 1056 /* screen has to be redrawn with new curwin->w_leftcol */ | |
| 1057 redraw_later(NOT_VALID); | |
| 1058 } | |
| 1059 } | |
| 1060 curwin->w_wcol -= curwin->w_leftcol; | |
| 1061 } | |
| 1062 else if (curwin->w_wcol > (int)curwin->w_leftcol) | |
| 1063 curwin->w_wcol -= curwin->w_leftcol; | |
| 1064 else | |
| 1065 curwin->w_wcol = 0; | |
| 1066 | |
| 1067 #ifdef FEAT_DIFF | |
| 1068 /* Skip over filler lines. At the top use w_topfill, there | |
| 1069 * may be some filler lines above the window. */ | |
| 1070 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 1071 curwin->w_wrow += curwin->w_topfill; | |
| 1072 else | |
| 1073 curwin->w_wrow += diff_check_fill(curwin, curwin->w_cursor.lnum); | |
| 1074 #endif | |
| 1075 | |
| 1076 prev_skipcol = curwin->w_skipcol; | |
| 1077 | |
| 1078 p_lines = 0; | |
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1079 |
| 7 | 1080 if ((curwin->w_wrow >= curwin->w_height |
| 1081 || ((prev_skipcol > 0 | |
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1082 || curwin->w_wrow + so >= curwin->w_height) |
| 7 | 1083 && (p_lines = |
| 1084 #ifdef FEAT_DIFF | |
| 1085 plines_win_nofill | |
| 1086 #else | |
| 1087 plines_win | |
| 1088 #endif | |
| 1089 (curwin, curwin->w_cursor.lnum, FALSE)) | |
| 1090 - 1 >= curwin->w_height)) | |
| 1091 && curwin->w_height != 0 | |
| 1092 && curwin->w_cursor.lnum == curwin->w_topline | |
| 1093 && width > 0 | |
|
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|
1094 && curwin->w_width != 0) |
| 7 | 1095 { |
| 1096 /* Cursor past end of screen. Happens with a single line that does | |
| 1097 * not fit on screen. Find a skipcol to show the text around the | |
| 1098 * cursor. Avoid scrolling all the time. compute value of "extra": | |
|
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|
1099 * 1: Less than 'scrolloff' lines above |
|
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|
1100 * 2: Less than 'scrolloff' lines below |
| 7 | 1101 * 3: both of them */ |
| 1102 extra = 0; | |
|
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|
1103 if (curwin->w_skipcol + so * width > curwin->w_virtcol) |
| 7 | 1104 extra = 1; |
| 1105 /* Compute last display line of the buffer line that we want at the | |
| 1106 * bottom of the window. */ | |
| 1107 if (p_lines == 0) | |
| 1108 p_lines = plines_win(curwin, curwin->w_cursor.lnum, FALSE); | |
| 1109 --p_lines; | |
|
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|
1110 if (p_lines > curwin->w_wrow + so) |
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|
1111 n = curwin->w_wrow + so; |
| 7 | 1112 else |
| 1113 n = p_lines; | |
| 1114 if ((colnr_T)n >= curwin->w_height + curwin->w_skipcol / width) | |
| 1115 extra += 2; | |
| 1116 | |
|
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|
1117 if (extra == 3 || p_lines < so * 2) |
| 7 | 1118 { |
| 1119 /* not enough room for 'scrolloff', put cursor in the middle */ | |
| 1120 n = curwin->w_virtcol / width; | |
| 1121 if (n > curwin->w_height / 2) | |
| 1122 n -= curwin->w_height / 2; | |
| 1123 else | |
| 1124 n = 0; | |
| 1125 /* don't skip more than necessary */ | |
| 1126 if (n > p_lines - curwin->w_height + 1) | |
| 1127 n = p_lines - curwin->w_height + 1; | |
| 1128 curwin->w_skipcol = n * width; | |
| 1129 } | |
| 1130 else if (extra == 1) | |
| 1131 { | |
| 1132 /* less then 'scrolloff' lines above, decrease skipcol */ | |
|
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|
1133 extra = (curwin->w_skipcol + so * width - curwin->w_virtcol |
| 7 | 1134 + width - 1) / width; |
| 1135 if (extra > 0) | |
| 1136 { | |
| 1137 if ((colnr_T)(extra * width) > curwin->w_skipcol) | |
| 1138 extra = curwin->w_skipcol / width; | |
| 1139 curwin->w_skipcol -= extra * width; | |
| 1140 } | |
| 1141 } | |
| 1142 else if (extra == 2) | |
| 1143 { | |
| 1144 /* less then 'scrolloff' lines below, increase skipcol */ | |
| 1145 endcol = (n - curwin->w_height + 1) * width; | |
| 1146 while (endcol > curwin->w_virtcol) | |
| 1147 endcol -= width; | |
| 1148 if (endcol > curwin->w_skipcol) | |
| 1149 curwin->w_skipcol = endcol; | |
| 1150 } | |
| 1151 | |
| 1152 curwin->w_wrow -= curwin->w_skipcol / width; | |
| 1153 if (curwin->w_wrow >= curwin->w_height) | |
| 1154 { | |
| 1155 /* small window, make sure cursor is in it */ | |
| 1156 extra = curwin->w_wrow - curwin->w_height + 1; | |
| 1157 curwin->w_skipcol += extra * width; | |
| 1158 curwin->w_wrow -= extra; | |
| 1159 } | |
| 1160 | |
| 1161 extra = ((int)prev_skipcol - (int)curwin->w_skipcol) / width; | |
| 1162 if (extra > 0) | |
| 1163 win_ins_lines(curwin, 0, extra, FALSE, FALSE); | |
| 1164 else if (extra < 0) | |
|
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|
1165 win_del_lines(curwin, 0, -extra, FALSE, FALSE, 0); |
| 7 | 1166 } |
| 1167 else | |
| 1168 curwin->w_skipcol = 0; | |
| 1169 if (prev_skipcol != curwin->w_skipcol) | |
| 1170 redraw_later(NOT_VALID); | |
| 1171 | |
| 740 | 1172 #ifdef FEAT_SYN_HL |
| 5749 | 1173 /* Redraw when w_virtcol changes and 'cursorcolumn' is set */ |
| 1174 if (curwin->w_p_cuc && (curwin->w_valid & VALID_VIRTCOL) == 0 | |
|
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|
1175 && !pum_visible()) |
| 5749 | 1176 redraw_later(SOME_VALID); |
|
2178
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|
1177 #endif |
| 740 | 1178 |
| 7 | 1179 curwin->w_valid |= VALID_WCOL|VALID_WROW|VALID_VIRTCOL; |
| 1180 } | |
| 1181 | |
|
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|
1182 #if (defined(FEAT_EVAL) || defined(FEAT_TEXT_PROP)) || defined(PROTO) |
|
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1183 /* |
|
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1184 * Compute the screen position of text character at "pos" in window "wp" |
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1185 * The resulting values are one-based, zero when character is not visible. |
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1186 */ |
|
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|
1187 void |
|
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|
1188 textpos2screenpos( |
|
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|
1189 win_T *wp, |
|
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|
1190 pos_T *pos, |
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1191 int *rowp, // screen row |
|
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|
1192 int *scolp, // start screen column |
|
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|
1193 int *ccolp, // cursor screen column |
|
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|
1194 int *ecolp) // end screen column |
|
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1195 { |
|
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1196 colnr_T scol = 0, ccol = 0, ecol = 0; |
|
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1197 int row = 0; |
|
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|
1198 int rowoff = 0; |
|
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|
1199 colnr_T coloff = 0; |
|
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|
1200 |
|
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1201 if (pos->lnum >= wp->w_topline && pos->lnum < wp->w_botline) |
|
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1202 { |
|
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|
1203 colnr_T off; |
|
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|
1204 colnr_T col; |
|
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|
1205 int width; |
|
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1206 |
|
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1207 row = plines_m_win(wp, wp->w_topline, pos->lnum - 1) + 1; |
|
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|
1208 getvcol(wp, pos, &scol, &ccol, &ecol); |
|
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|
1209 |
|
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|
1210 // similar to what is done in validate_cursor_col() |
|
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|
1211 col = scol; |
|
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|
1212 off = win_col_off(wp); |
|
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|
1213 col += off; |
|
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|
1214 width = wp->w_width - off + win_col_off2(wp); |
|
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1215 |
|
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|
1216 // long line wrapping, adjust row |
|
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|
1217 if (wp->w_p_wrap |
|
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|
1218 && col >= (colnr_T)wp->w_width |
|
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1219 && width > 0) |
|
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|
1220 { |
|
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|
1221 // use same formula as what is used in curs_columns() |
|
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|
1222 rowoff = ((col - wp->w_width) / width + 1); |
|
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|
1223 col -= rowoff * width; |
|
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1224 } |
|
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|
1225 col -= wp->w_leftcol; |
|
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|
1226 if (col >= width) |
|
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|
1227 col = -1; |
|
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|
1228 if (col >= 0) |
|
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1229 coloff = col - scol + wp->w_wincol + 1; |
|
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1230 else |
|
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1231 // character is left or right of the window |
|
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|
1232 row = scol = ccol = ecol = 0; |
|
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|
1233 } |
|
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1234 *rowp = wp->w_winrow + row + rowoff; |
|
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1235 *scolp = scol + coloff; |
|
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1236 *ccolp = ccol + coloff; |
|
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1237 *ecolp = ecol + coloff; |
|
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|
1238 } |
|
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|
1239 #endif |
|
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|
1240 |
|
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|
1241 #if defined(FEAT_EVAL) || defined(PROTO) |
|
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|
1242 /* |
|
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|
1243 * "screenpos({winid}, {lnum}, {col})" function |
|
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|
1244 */ |
|
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|
1245 void |
|
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|
1246 f_screenpos(typval_T *argvars UNUSED, typval_T *rettv) |
|
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|
1247 { |
|
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|
1248 dict_T *dict; |
|
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|
1249 win_T *wp; |
|
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|
1250 pos_T pos; |
|
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|
1251 int row = 0; |
|
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|
1252 int scol = 0, ccol = 0, ecol = 0; |
|
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|
1253 |
|
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|
1254 if (rettv_dict_alloc(rettv) != OK) |
|
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|
1255 return; |
|
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1256 dict = rettv->vval.v_dict; |
|
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1257 |
|
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1258 wp = find_win_by_nr_or_id(&argvars[0]); |
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1259 if (wp == NULL) |
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1260 return; |
|
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1261 |
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1262 pos.lnum = tv_get_number(&argvars[1]); |
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1263 pos.col = tv_get_number(&argvars[2]) - 1; |
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1264 pos.coladd = 0; |
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1265 textpos2screenpos(wp, &pos, &row, &scol, &ccol, &ecol); |
|
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1266 |
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1267 dict_add_number(dict, "row", row); |
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1268 dict_add_number(dict, "col", scol); |
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1269 dict_add_number(dict, "curscol", ccol); |
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1270 dict_add_number(dict, "endcol", ecol); |
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1271 } |
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1272 #endif |
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1273 |
| 7 | 1274 /* |
| 1275 * Scroll the current window down by "line_count" logical lines. "CTRL-Y" | |
| 1276 */ | |
| 1277 void | |
|
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1278 scrolldown( |
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1279 long line_count, |
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1280 int byfold UNUSED) /* TRUE: count a closed fold as one line */ |
| 7 | 1281 { |
| 1282 long done = 0; /* total # of physical lines done */ | |
| 1283 int wrow; | |
| 1284 int moved = FALSE; | |
| 1285 | |
| 1286 #ifdef FEAT_FOLDING | |
| 1287 linenr_T first; | |
| 1288 | |
| 1289 /* Make sure w_topline is at the first of a sequence of folded lines. */ | |
| 1290 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 1291 #endif | |
| 1292 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1293 while (line_count-- > 0) | |
| 1294 { | |
| 1295 #ifdef FEAT_DIFF | |
| 1980 | 1296 if (curwin->w_topfill < diff_check(curwin, curwin->w_topline) |
| 1297 && curwin->w_topfill < curwin->w_height - 1) | |
| 7 | 1298 { |
| 1299 ++curwin->w_topfill; | |
| 1300 ++done; | |
| 1301 } | |
| 1302 else | |
| 1303 #endif | |
| 1304 { | |
| 1305 if (curwin->w_topline == 1) | |
| 1306 break; | |
| 1307 --curwin->w_topline; | |
| 1308 #ifdef FEAT_DIFF | |
| 1309 curwin->w_topfill = 0; | |
| 1310 #endif | |
| 1311 #ifdef FEAT_FOLDING | |
| 1312 /* A sequence of folded lines only counts for one logical line */ | |
| 1313 if (hasFolding(curwin->w_topline, &first, NULL)) | |
| 1314 { | |
| 1315 ++done; | |
| 1316 if (!byfold) | |
| 1317 line_count -= curwin->w_topline - first - 1; | |
| 1318 curwin->w_botline -= curwin->w_topline - first; | |
| 1319 curwin->w_topline = first; | |
| 1320 } | |
| 1321 else | |
| 1322 #endif | |
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1323 done += PLINES_NOFILL(curwin->w_topline); |
| 7 | 1324 } |
| 1325 --curwin->w_botline; /* approximate w_botline */ | |
| 1326 invalidate_botline(); | |
| 1327 } | |
| 1328 curwin->w_wrow += done; /* keep w_wrow updated */ | |
| 1329 curwin->w_cline_row += done; /* keep w_cline_row updated */ | |
| 1330 | |
| 1331 #ifdef FEAT_DIFF | |
| 1332 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 1333 curwin->w_cline_row = 0; | |
| 1334 check_topfill(curwin, TRUE); | |
| 1335 #endif | |
| 1336 | |
| 1337 /* | |
| 1338 * Compute the row number of the last row of the cursor line | |
| 1339 * and move the cursor onto the displayed part of the window. | |
| 1340 */ | |
| 1341 wrow = curwin->w_wrow; | |
|
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1342 if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 1343 { |
| 1344 validate_virtcol(); | |
| 1345 validate_cheight(); | |
| 1346 wrow += curwin->w_cline_height - 1 - | |
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1347 curwin->w_virtcol / curwin->w_width; |
| 7 | 1348 } |
| 1349 while (wrow >= curwin->w_height && curwin->w_cursor.lnum > 1) | |
| 1350 { | |
| 1351 #ifdef FEAT_FOLDING | |
| 1352 if (hasFolding(curwin->w_cursor.lnum, &first, NULL)) | |
| 1353 { | |
| 1354 --wrow; | |
| 1355 if (first == 1) | |
| 1356 curwin->w_cursor.lnum = 1; | |
| 1357 else | |
| 1358 curwin->w_cursor.lnum = first - 1; | |
| 1359 } | |
| 1360 else | |
| 1361 #endif | |
| 1362 wrow -= plines(curwin->w_cursor.lnum--); | |
| 1363 curwin->w_valid &= | |
| 1364 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
| 1365 moved = TRUE; | |
| 1366 } | |
| 1367 if (moved) | |
| 1368 { | |
| 1369 #ifdef FEAT_FOLDING | |
| 1370 /* Move cursor to first line of closed fold. */ | |
| 1371 foldAdjustCursor(); | |
| 1372 #endif | |
| 1373 coladvance(curwin->w_curswant); | |
| 1374 } | |
| 1375 } | |
| 1376 | |
| 1377 /* | |
| 1378 * Scroll the current window up by "line_count" logical lines. "CTRL-E" | |
| 1379 */ | |
| 1380 void | |
|
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1381 scrollup( |
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1382 long line_count, |
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1383 int byfold UNUSED) /* TRUE: count a closed fold as one line */ |
| 7 | 1384 { |
| 1385 #if defined(FEAT_FOLDING) || defined(FEAT_DIFF) | |
| 1386 linenr_T lnum; | |
| 1387 | |
| 1388 if ( | |
| 1389 # ifdef FEAT_FOLDING | |
| 1390 (byfold && hasAnyFolding(curwin)) | |
| 1391 # ifdef FEAT_DIFF | |
| 1392 || | |
| 1393 # endif | |
| 1394 # endif | |
| 1395 # ifdef FEAT_DIFF | |
| 1396 curwin->w_p_diff | |
| 1397 # endif | |
| 1398 ) | |
| 1399 { | |
| 1400 /* count each sequence of folded lines as one logical line */ | |
| 1401 lnum = curwin->w_topline; | |
| 1402 while (line_count--) | |
| 1403 { | |
| 1404 # ifdef FEAT_DIFF | |
| 1405 if (curwin->w_topfill > 0) | |
| 1406 --curwin->w_topfill; | |
| 1407 else | |
| 1408 # endif | |
| 1409 { | |
| 1410 # ifdef FEAT_FOLDING | |
| 1411 if (byfold) | |
| 1412 (void)hasFolding(lnum, NULL, &lnum); | |
| 1413 # endif | |
| 1414 if (lnum >= curbuf->b_ml.ml_line_count) | |
| 1415 break; | |
| 1416 ++lnum; | |
| 1417 # ifdef FEAT_DIFF | |
| 1418 curwin->w_topfill = diff_check_fill(curwin, lnum); | |
| 1419 # endif | |
| 1420 } | |
| 1421 } | |
| 1422 /* approximate w_botline */ | |
| 1423 curwin->w_botline += lnum - curwin->w_topline; | |
| 1424 curwin->w_topline = lnum; | |
| 1425 } | |
| 1426 else | |
| 1427 #endif | |
| 1428 { | |
| 1429 curwin->w_topline += line_count; | |
| 1430 curwin->w_botline += line_count; /* approximate w_botline */ | |
| 1431 } | |
| 1432 | |
| 1433 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
| 1434 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
| 1435 if (curwin->w_botline > curbuf->b_ml.ml_line_count + 1) | |
| 1436 curwin->w_botline = curbuf->b_ml.ml_line_count + 1; | |
| 1437 | |
| 1438 #ifdef FEAT_DIFF | |
| 1439 check_topfill(curwin, FALSE); | |
| 1440 #endif | |
| 1441 | |
| 1442 #ifdef FEAT_FOLDING | |
| 1443 if (hasAnyFolding(curwin)) | |
| 1444 /* Make sure w_topline is at the first of a sequence of folded lines. */ | |
| 1445 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 1446 #endif | |
| 1447 | |
| 1448 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1449 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 1450 { | |
| 1451 curwin->w_cursor.lnum = curwin->w_topline; | |
| 1452 curwin->w_valid &= | |
| 1453 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
| 1454 coladvance(curwin->w_curswant); | |
| 1455 } | |
| 1456 } | |
| 1457 | |
| 1458 #ifdef FEAT_DIFF | |
| 1459 /* | |
| 1460 * Don't end up with too many filler lines in the window. | |
| 1461 */ | |
| 1462 void | |
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1463 check_topfill( |
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1464 win_T *wp, |
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1465 int down) /* when TRUE scroll down when not enough space */ |
| 7 | 1466 { |
| 1467 int n; | |
| 1468 | |
| 1469 if (wp->w_topfill > 0) | |
| 1470 { | |
| 1471 n = plines_win_nofill(wp, wp->w_topline, TRUE); | |
| 1472 if (wp->w_topfill + n > wp->w_height) | |
| 1473 { | |
| 1474 if (down && wp->w_topline > 1) | |
| 1475 { | |
| 1476 --wp->w_topline; | |
| 1477 wp->w_topfill = 0; | |
| 1478 } | |
| 1479 else | |
| 1480 { | |
| 1481 wp->w_topfill = wp->w_height - n; | |
| 1482 if (wp->w_topfill < 0) | |
| 1483 wp->w_topfill = 0; | |
| 1484 } | |
| 1485 } | |
| 1486 } | |
| 1487 } | |
| 1488 | |
| 1489 /* | |
| 1490 * Use as many filler lines as possible for w_topline. Make sure w_topline | |
| 1491 * is still visible. | |
| 1492 */ | |
| 1493 static void | |
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|
1494 max_topfill(void) |
| 7 | 1495 { |
| 1496 int n; | |
| 1497 | |
| 1498 n = plines_nofill(curwin->w_topline); | |
| 1499 if (n >= curwin->w_height) | |
| 1500 curwin->w_topfill = 0; | |
| 1501 else | |
| 1502 { | |
| 1503 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 1504 if (curwin->w_topfill + n > curwin->w_height) | |
| 1505 curwin->w_topfill = curwin->w_height - n; | |
| 1506 } | |
| 1507 } | |
| 1508 #endif | |
| 1509 | |
| 1510 /* | |
| 1511 * Scroll the screen one line down, but don't do it if it would move the | |
| 1512 * cursor off the screen. | |
| 1513 */ | |
| 1514 void | |
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|
1515 scrolldown_clamp(void) |
| 7 | 1516 { |
| 1517 int end_row; | |
| 1518 #ifdef FEAT_DIFF | |
| 1519 int can_fill = (curwin->w_topfill | |
| 1520 < diff_check_fill(curwin, curwin->w_topline)); | |
| 1521 #endif | |
| 1522 | |
| 1523 if (curwin->w_topline <= 1 | |
| 1524 #ifdef FEAT_DIFF | |
| 1525 && !can_fill | |
| 1526 #endif | |
| 1527 ) | |
| 1528 return; | |
| 1529 | |
| 1530 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1531 | |
| 1532 /* | |
| 1533 * Compute the row number of the last row of the cursor line | |
| 1534 * and make sure it doesn't go off the screen. Make sure the cursor | |
| 1535 * doesn't go past 'scrolloff' lines from the screen end. | |
| 1536 */ | |
| 1537 end_row = curwin->w_wrow; | |
| 1538 #ifdef FEAT_DIFF | |
| 1539 if (can_fill) | |
| 1540 ++end_row; | |
| 1541 else | |
| 1542 end_row += plines_nofill(curwin->w_topline - 1); | |
| 1543 #else | |
| 1544 end_row += plines(curwin->w_topline - 1); | |
| 1545 #endif | |
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1546 if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 1547 { |
| 1548 validate_cheight(); | |
| 1549 validate_virtcol(); | |
| 1550 end_row += curwin->w_cline_height - 1 - | |
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1551 curwin->w_virtcol / curwin->w_width; |
| 7 | 1552 } |
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1553 if (end_row < curwin->w_height - get_scrolloff_value()) |
| 7 | 1554 { |
| 1555 #ifdef FEAT_DIFF | |
| 1556 if (can_fill) | |
| 1557 { | |
| 1558 ++curwin->w_topfill; | |
| 1559 check_topfill(curwin, TRUE); | |
| 1560 } | |
| 1561 else | |
| 1562 { | |
| 1563 --curwin->w_topline; | |
| 1564 curwin->w_topfill = 0; | |
| 1565 } | |
| 1566 #else | |
| 1567 --curwin->w_topline; | |
| 1568 #endif | |
| 1569 #ifdef FEAT_FOLDING | |
| 7009 | 1570 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
| 7 | 1571 #endif |
| 1572 --curwin->w_botline; /* approximate w_botline */ | |
| 1573 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1574 } | |
| 1575 } | |
| 1576 | |
| 1577 /* | |
| 1578 * Scroll the screen one line up, but don't do it if it would move the cursor | |
| 1579 * off the screen. | |
| 1580 */ | |
| 1581 void | |
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1582 scrollup_clamp(void) |
| 7 | 1583 { |
| 1584 int start_row; | |
| 1585 | |
| 1586 if (curwin->w_topline == curbuf->b_ml.ml_line_count | |
| 1587 #ifdef FEAT_DIFF | |
| 1588 && curwin->w_topfill == 0 | |
| 1589 #endif | |
| 1590 ) | |
| 1591 return; | |
| 1592 | |
| 1593 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1594 | |
| 1595 /* | |
| 1596 * Compute the row number of the first row of the cursor line | |
| 1597 * and make sure it doesn't go off the screen. Make sure the cursor | |
| 1598 * doesn't go before 'scrolloff' lines from the screen start. | |
| 1599 */ | |
| 1600 #ifdef FEAT_DIFF | |
| 1601 start_row = curwin->w_wrow - plines_nofill(curwin->w_topline) | |
| 1602 - curwin->w_topfill; | |
| 1603 #else | |
| 1604 start_row = curwin->w_wrow - plines(curwin->w_topline); | |
| 1605 #endif | |
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1606 if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 1607 { |
| 1608 validate_virtcol(); | |
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1609 start_row -= curwin->w_virtcol / curwin->w_width; |
| 7 | 1610 } |
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1611 if (start_row >= get_scrolloff_value()) |
| 7 | 1612 { |
| 1613 #ifdef FEAT_DIFF | |
| 1614 if (curwin->w_topfill > 0) | |
| 1615 --curwin->w_topfill; | |
| 1616 else | |
| 1617 #endif | |
| 36 | 1618 { |
| 1619 #ifdef FEAT_FOLDING | |
| 1620 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
| 1621 #endif | |
| 7 | 1622 ++curwin->w_topline; |
| 36 | 1623 } |
| 7 | 1624 ++curwin->w_botline; /* approximate w_botline */ |
| 1625 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1626 } | |
| 1627 } | |
| 1628 | |
| 1629 /* | |
| 1630 * Add one line above "lp->lnum". This can be a filler line, a closed fold or | |
| 1631 * a (wrapped) text line. Uses and sets "lp->fill". | |
| 1632 * Returns the height of the added line in "lp->height". | |
|
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1633 * Lines above the first one are incredibly high: MAXCOL. |
| 7 | 1634 */ |
| 1635 static void | |
|
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|
1636 topline_back(lineoff_T *lp) |
| 7 | 1637 { |
| 1638 #ifdef FEAT_DIFF | |
| 1639 if (lp->fill < diff_check_fill(curwin, lp->lnum)) | |
| 1640 { | |
| 1641 /* Add a filler line. */ | |
| 1642 ++lp->fill; | |
| 1643 lp->height = 1; | |
| 1644 } | |
| 1645 else | |
| 1646 #endif | |
| 1647 { | |
| 1648 --lp->lnum; | |
| 1649 #ifdef FEAT_DIFF | |
| 1650 lp->fill = 0; | |
| 1651 #endif | |
| 1652 if (lp->lnum < 1) | |
| 1653 lp->height = MAXCOL; | |
| 1654 else | |
| 1655 #ifdef FEAT_FOLDING | |
| 1656 if (hasFolding(lp->lnum, &lp->lnum, NULL)) | |
| 1657 /* Add a closed fold */ | |
| 1658 lp->height = 1; | |
| 1659 else | |
| 1660 #endif | |
|
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|
1661 lp->height = PLINES_NOFILL(lp->lnum); |
| 7 | 1662 } |
| 1663 } | |
| 1664 | |
| 1665 /* | |
| 1666 * Add one line below "lp->lnum". This can be a filler line, a closed fold or | |
| 1667 * a (wrapped) text line. Uses and sets "lp->fill". | |
| 1668 * Returns the height of the added line in "lp->height". | |
| 1669 * Lines below the last one are incredibly high. | |
| 1670 */ | |
| 1671 static void | |
|
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1672 botline_forw(lineoff_T *lp) |
| 7 | 1673 { |
| 1674 #ifdef FEAT_DIFF | |
| 1675 if (lp->fill < diff_check_fill(curwin, lp->lnum + 1)) | |
| 1676 { | |
| 1677 /* Add a filler line. */ | |
| 1678 ++lp->fill; | |
| 1679 lp->height = 1; | |
| 1680 } | |
| 1681 else | |
| 1682 #endif | |
| 1683 { | |
| 1684 ++lp->lnum; | |
| 1685 #ifdef FEAT_DIFF | |
| 1686 lp->fill = 0; | |
| 1687 #endif | |
| 1688 if (lp->lnum > curbuf->b_ml.ml_line_count) | |
| 1689 lp->height = MAXCOL; | |
| 1690 else | |
| 1691 #ifdef FEAT_FOLDING | |
| 1692 if (hasFolding(lp->lnum, NULL, &lp->lnum)) | |
| 1693 /* Add a closed fold */ | |
| 1694 lp->height = 1; | |
| 1695 else | |
| 1696 #endif | |
|
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1697 lp->height = PLINES_NOFILL(lp->lnum); |
| 7 | 1698 } |
| 1699 } | |
| 1700 | |
| 1701 #ifdef FEAT_DIFF | |
| 1702 /* | |
| 1703 * Switch from including filler lines below lp->lnum to including filler | |
| 1704 * lines above loff.lnum + 1. This keeps pointing to the same line. | |
| 1705 * When there are no filler lines nothing changes. | |
| 1706 */ | |
| 1707 static void | |
|
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1708 botline_topline(lineoff_T *lp) |
| 7 | 1709 { |
| 1710 if (lp->fill > 0) | |
| 1711 { | |
| 1712 ++lp->lnum; | |
| 1713 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
| 1714 } | |
| 1715 } | |
| 1716 | |
| 1717 /* | |
| 1718 * Switch from including filler lines above lp->lnum to including filler | |
| 1719 * lines below loff.lnum - 1. This keeps pointing to the same line. | |
| 1720 * When there are no filler lines nothing changes. | |
| 1721 */ | |
| 1722 static void | |
|
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1723 topline_botline(lineoff_T *lp) |
| 7 | 1724 { |
| 1725 if (lp->fill > 0) | |
| 1726 { | |
| 1727 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
| 1728 --lp->lnum; | |
| 1729 } | |
| 1730 } | |
| 1731 #endif | |
| 1732 | |
| 1733 /* | |
| 1734 * Recompute topline to put the cursor at the top of the window. | |
| 1735 * Scroll at least "min_scroll" lines. | |
| 1736 * If "always" is TRUE, always set topline (for "zt"). | |
| 1737 */ | |
| 1738 void | |
|
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1739 scroll_cursor_top(int min_scroll, int always) |
| 7 | 1740 { |
| 1741 int scrolled = 0; | |
| 1742 int extra = 0; | |
| 1743 int used; | |
| 1744 int i; | |
| 1745 linenr_T top; /* just above displayed lines */ | |
| 1746 linenr_T bot; /* just below displayed lines */ | |
| 1747 linenr_T old_topline = curwin->w_topline; | |
| 1748 #ifdef FEAT_DIFF | |
| 1749 linenr_T old_topfill = curwin->w_topfill; | |
| 1750 #endif | |
| 1751 linenr_T new_topline; | |
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1752 int off = get_scrolloff_value(); |
| 7 | 1753 |
| 1754 #ifdef FEAT_MOUSE | |
| 1755 if (mouse_dragging > 0) | |
| 1756 off = mouse_dragging - 1; | |
| 1757 #endif | |
| 1758 | |
| 1759 /* | |
| 1760 * Decrease topline until: | |
| 1761 * - it has become 1 | |
| 1762 * - (part of) the cursor line is moved off the screen or | |
| 1763 * - moved at least 'scrolljump' lines and | |
| 1764 * - at least 'scrolloff' lines above and below the cursor | |
| 1765 */ | |
| 1766 validate_cheight(); | |
|
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1767 used = curwin->w_cline_height; /* includes filler lines above */ |
| 7 | 1768 if (curwin->w_cursor.lnum < curwin->w_topline) |
| 1769 scrolled = used; | |
| 1770 | |
| 1771 #ifdef FEAT_FOLDING | |
| 1772 if (hasFolding(curwin->w_cursor.lnum, &top, &bot)) | |
| 1773 { | |
| 1774 --top; | |
| 1775 ++bot; | |
| 1776 } | |
| 1777 else | |
| 1778 #endif | |
| 1779 { | |
| 1780 top = curwin->w_cursor.lnum - 1; | |
| 1781 bot = curwin->w_cursor.lnum + 1; | |
| 1782 } | |
| 1783 new_topline = top + 1; | |
| 1784 | |
| 1785 #ifdef FEAT_DIFF | |
|
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1786 /* "used" already contains the number of filler lines above, don't add it |
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1787 * again. |
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1788 * Hide filler lines above cursor line by adding them to "extra". */ |
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1789 extra += diff_check_fill(curwin, curwin->w_cursor.lnum); |
| 7 | 1790 #endif |
| 1791 | |
| 1792 /* | |
| 1793 * Check if the lines from "top" to "bot" fit in the window. If they do, | |
| 1794 * set new_topline and advance "top" and "bot" to include more lines. | |
| 1795 */ | |
| 1796 while (top > 0) | |
| 1797 { | |
| 1798 #ifdef FEAT_FOLDING | |
| 1799 if (hasFolding(top, &top, NULL)) | |
| 1800 /* count one logical line for a sequence of folded lines */ | |
| 1801 i = 1; | |
| 1802 else | |
| 1803 #endif | |
|
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1804 i = PLINES_NOFILL(top); |
| 7 | 1805 used += i; |
| 1806 if (extra + i <= off && bot < curbuf->b_ml.ml_line_count) | |
| 1807 { | |
| 1808 #ifdef FEAT_FOLDING | |
| 1809 if (hasFolding(bot, NULL, &bot)) | |
| 1810 /* count one logical line for a sequence of folded lines */ | |
| 1811 ++used; | |
| 1812 else | |
| 1813 #endif | |
| 1814 used += plines(bot); | |
| 1815 } | |
| 1816 if (used > curwin->w_height) | |
| 1817 break; | |
| 1818 if (top < curwin->w_topline) | |
| 1819 scrolled += i; | |
| 1820 | |
| 1821 /* | |
| 1822 * If scrolling is needed, scroll at least 'sj' lines. | |
| 1823 */ | |
| 1824 if ((new_topline >= curwin->w_topline || scrolled > min_scroll) | |
| 1825 && extra >= off) | |
| 1826 break; | |
| 1827 | |
| 1828 extra += i; | |
| 1829 new_topline = top; | |
| 1830 --top; | |
| 1831 ++bot; | |
| 1832 } | |
| 1833 | |
| 1834 /* | |
| 1835 * If we don't have enough space, put cursor in the middle. | |
| 1836 * This makes sure we get the same position when using "k" and "j" | |
| 1837 * in a small window. | |
| 1838 */ | |
| 1839 if (used > curwin->w_height) | |
| 1840 scroll_cursor_halfway(FALSE); | |
| 1841 else | |
| 1842 { | |
| 1843 /* | |
| 1844 * If "always" is FALSE, only adjust topline to a lower value, higher | |
| 1845 * value may happen with wrapping lines | |
| 1846 */ | |
| 1847 if (new_topline < curwin->w_topline || always) | |
| 1848 curwin->w_topline = new_topline; | |
| 1849 if (curwin->w_topline > curwin->w_cursor.lnum) | |
| 1850 curwin->w_topline = curwin->w_cursor.lnum; | |
| 1851 #ifdef FEAT_DIFF | |
| 1852 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 1853 if (curwin->w_topfill > 0 && extra > off) | |
| 1854 { | |
| 1855 curwin->w_topfill -= extra - off; | |
| 1856 if (curwin->w_topfill < 0) | |
| 1857 curwin->w_topfill = 0; | |
| 1858 } | |
| 1859 check_topfill(curwin, FALSE); | |
| 1860 #endif | |
| 1861 if (curwin->w_topline != old_topline | |
| 1862 #ifdef FEAT_DIFF | |
| 1863 || curwin->w_topfill != old_topfill | |
| 1864 #endif | |
| 1865 ) | |
| 1866 curwin->w_valid &= | |
| 1867 ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 1868 curwin->w_valid |= VALID_TOPLINE; | |
| 1869 } | |
| 1870 } | |
| 1871 | |
| 1872 /* | |
| 1873 * Set w_empty_rows and w_filler_rows for window "wp", having used up "used" | |
| 1874 * screen lines for text lines. | |
| 1875 */ | |
| 1876 void | |
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1877 set_empty_rows(win_T *wp, int used) |
| 7 | 1878 { |
| 1879 #ifdef FEAT_DIFF | |
| 1880 wp->w_filler_rows = 0; | |
| 1881 #endif | |
| 1882 if (used == 0) | |
| 1883 wp->w_empty_rows = 0; /* single line that doesn't fit */ | |
| 1884 else | |
| 1885 { | |
| 1886 wp->w_empty_rows = wp->w_height - used; | |
| 1887 #ifdef FEAT_DIFF | |
| 1888 if (wp->w_botline <= wp->w_buffer->b_ml.ml_line_count) | |
| 1889 { | |
| 1890 wp->w_filler_rows = diff_check_fill(wp, wp->w_botline); | |
| 1891 if (wp->w_empty_rows > wp->w_filler_rows) | |
| 1892 wp->w_empty_rows -= wp->w_filler_rows; | |
| 1893 else | |
| 1894 { | |
| 1895 wp->w_filler_rows = wp->w_empty_rows; | |
| 1896 wp->w_empty_rows = 0; | |
| 1897 } | |
| 1898 } | |
| 1899 #endif | |
| 1900 } | |
| 1901 } | |
| 1902 | |
| 1903 /* | |
| 1904 * Recompute topline to put the cursor at the bottom of the window. | |
| 1905 * Scroll at least "min_scroll" lines. | |
| 1906 * If "set_topbot" is TRUE, set topline and botline first (for "zb"). | |
| 1907 * This is messy stuff!!! | |
| 1908 */ | |
| 1909 void | |
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1910 scroll_cursor_bot(int min_scroll, int set_topbot) |
| 7 | 1911 { |
| 1912 int used; | |
| 1913 int scrolled = 0; | |
| 1914 int extra = 0; | |
| 1915 int i; | |
| 1916 linenr_T line_count; | |
| 1917 linenr_T old_topline = curwin->w_topline; | |
| 1918 lineoff_T loff; | |
| 1919 lineoff_T boff; | |
| 1920 #ifdef FEAT_DIFF | |
| 1921 int old_topfill = curwin->w_topfill; | |
| 1922 int fill_below_window; | |
| 1923 #endif | |
| 1924 linenr_T old_botline = curwin->w_botline; | |
| 1925 linenr_T old_valid = curwin->w_valid; | |
| 1926 int old_empty_rows = curwin->w_empty_rows; | |
| 1927 linenr_T cln; /* Cursor Line Number */ | |
|
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1928 long so = get_scrolloff_value(); |
| 7 | 1929 |
| 1930 cln = curwin->w_cursor.lnum; | |
| 1931 if (set_topbot) | |
| 1932 { | |
| 1933 used = 0; | |
| 1934 curwin->w_botline = cln + 1; | |
| 1935 #ifdef FEAT_DIFF | |
| 1936 loff.fill = 0; | |
| 1937 #endif | |
| 1938 for (curwin->w_topline = curwin->w_botline; | |
| 1939 curwin->w_topline > 1; | |
| 1940 curwin->w_topline = loff.lnum) | |
| 1941 { | |
| 1942 loff.lnum = curwin->w_topline; | |
| 1943 topline_back(&loff); | |
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1944 if (loff.height == MAXCOL || used + loff.height > curwin->w_height) |
| 7 | 1945 break; |
| 1946 used += loff.height; | |
| 1947 #ifdef FEAT_DIFF | |
| 1948 curwin->w_topfill = loff.fill; | |
| 1949 #endif | |
| 1950 } | |
| 1951 set_empty_rows(curwin, used); | |
| 1952 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 1953 if (curwin->w_topline != old_topline | |
| 1954 #ifdef FEAT_DIFF | |
| 1955 || curwin->w_topfill != old_topfill | |
| 1956 #endif | |
| 1957 ) | |
| 1958 curwin->w_valid &= ~(VALID_WROW|VALID_CROW); | |
| 1959 } | |
| 1960 else | |
| 1961 validate_botline(); | |
| 1962 | |
| 1963 /* The lines of the cursor line itself are always used. */ | |
| 1964 #ifdef FEAT_DIFF | |
| 1965 used = plines_nofill(cln); | |
| 1966 #else | |
| 1967 validate_cheight(); | |
| 1968 used = curwin->w_cline_height; | |
| 1969 #endif | |
| 1970 | |
| 1971 /* If the cursor is below botline, we will at least scroll by the height | |
| 1972 * of the cursor line. Correct for empty lines, which are really part of | |
| 1973 * botline. */ | |
| 1974 if (cln >= curwin->w_botline) | |
| 1975 { | |
| 1976 scrolled = used; | |
| 1977 if (cln == curwin->w_botline) | |
| 1978 scrolled -= curwin->w_empty_rows; | |
| 1979 } | |
| 1980 | |
| 1981 /* | |
| 1982 * Stop counting lines to scroll when | |
| 1983 * - hitting start of the file | |
| 1984 * - scrolled nothing or at least 'sj' lines | |
|
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1985 * - at least 'scrolloff' lines below the cursor |
| 7 | 1986 * - lines between botline and cursor have been counted |
| 1987 */ | |
| 1988 #ifdef FEAT_FOLDING | |
| 1989 if (!hasFolding(curwin->w_cursor.lnum, &loff.lnum, &boff.lnum)) | |
| 1990 #endif | |
| 1991 { | |
| 1992 loff.lnum = cln; | |
| 1993 boff.lnum = cln; | |
| 1994 } | |
| 1995 #ifdef FEAT_DIFF | |
| 1996 loff.fill = 0; | |
| 1997 boff.fill = 0; | |
| 1998 fill_below_window = diff_check_fill(curwin, curwin->w_botline) | |
| 1999 - curwin->w_filler_rows; | |
| 2000 #endif | |
| 2001 | |
| 2002 while (loff.lnum > 1) | |
| 2003 { | |
| 2004 /* Stop when scrolled nothing or at least "min_scroll", found "extra" | |
| 2005 * context for 'scrolloff' and counted all lines below the window. */ | |
| 2006 if ((((scrolled <= 0 || scrolled >= min_scroll) | |
| 2007 && extra >= ( | |
| 2008 #ifdef FEAT_MOUSE | |
| 1121 | 2009 mouse_dragging > 0 ? mouse_dragging - 1 : |
| 7 | 2010 #endif |
|
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|
2011 so)) |
| 7 | 2012 || boff.lnum + 1 > curbuf->b_ml.ml_line_count) |
| 2013 && loff.lnum <= curwin->w_botline | |
| 2014 #ifdef FEAT_DIFF | |
| 2015 && (loff.lnum < curwin->w_botline | |
| 2016 || loff.fill >= fill_below_window) | |
| 2017 #endif | |
| 2018 ) | |
| 2019 break; | |
| 2020 | |
| 2021 /* Add one line above */ | |
| 2022 topline_back(&loff); | |
|
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2023 if (loff.height == MAXCOL) |
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2024 used = MAXCOL; |
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2025 else |
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2026 used += loff.height; |
| 7 | 2027 if (used > curwin->w_height) |
| 2028 break; | |
| 2029 if (loff.lnum >= curwin->w_botline | |
| 2030 #ifdef FEAT_DIFF | |
| 2031 && (loff.lnum > curwin->w_botline | |
| 2032 || loff.fill <= fill_below_window) | |
| 2033 #endif | |
| 2034 ) | |
| 2035 { | |
| 2036 /* Count screen lines that are below the window. */ | |
| 2037 scrolled += loff.height; | |
| 2038 if (loff.lnum == curwin->w_botline | |
| 2039 #ifdef FEAT_DIFF | |
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2040 && loff.fill == 0 |
| 7 | 2041 #endif |
| 2042 ) | |
| 2043 scrolled -= curwin->w_empty_rows; | |
| 2044 } | |
| 2045 | |
| 2046 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
| 2047 { | |
| 2048 /* Add one line below */ | |
| 2049 botline_forw(&boff); | |
| 2050 used += boff.height; | |
| 2051 if (used > curwin->w_height) | |
| 2052 break; | |
| 2053 if (extra < ( | |
| 2054 #ifdef FEAT_MOUSE | |
| 2055 mouse_dragging > 0 ? mouse_dragging - 1 : | |
| 2056 #endif | |
|
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parents:
15697
diff
changeset
|
2057 so) || scrolled < min_scroll) |
| 7 | 2058 { |
| 2059 extra += boff.height; | |
| 2060 if (boff.lnum >= curwin->w_botline | |
| 2061 #ifdef FEAT_DIFF | |
| 2062 || (boff.lnum + 1 == curwin->w_botline | |
| 2063 && boff.fill > curwin->w_filler_rows) | |
| 2064 #endif | |
| 2065 ) | |
| 2066 { | |
| 2067 /* Count screen lines that are below the window. */ | |
| 2068 scrolled += boff.height; | |
| 2069 if (boff.lnum == curwin->w_botline | |
| 2070 #ifdef FEAT_DIFF | |
| 2071 && boff.fill == 0 | |
| 2072 #endif | |
| 2073 ) | |
| 2074 scrolled -= curwin->w_empty_rows; | |
| 2075 } | |
| 2076 } | |
| 2077 } | |
| 2078 } | |
| 2079 | |
| 2080 /* curwin->w_empty_rows is larger, no need to scroll */ | |
| 2081 if (scrolled <= 0) | |
| 2082 line_count = 0; | |
| 2083 /* more than a screenfull, don't scroll but redraw */ | |
| 2084 else if (used > curwin->w_height) | |
| 2085 line_count = used; | |
| 2086 /* scroll minimal number of lines */ | |
| 2087 else | |
| 2088 { | |
| 2089 line_count = 0; | |
| 2090 #ifdef FEAT_DIFF | |
| 2091 boff.fill = curwin->w_topfill; | |
| 2092 #endif | |
| 2093 boff.lnum = curwin->w_topline - 1; | |
| 2094 for (i = 0; i < scrolled && boff.lnum < curwin->w_botline; ) | |
| 2095 { | |
| 2096 botline_forw(&boff); | |
| 2097 i += boff.height; | |
| 2098 ++line_count; | |
| 2099 } | |
| 2100 if (i < scrolled) /* below curwin->w_botline, don't scroll */ | |
| 2101 line_count = 9999; | |
| 2102 } | |
| 2103 | |
| 2104 /* | |
| 2105 * Scroll up if the cursor is off the bottom of the screen a bit. | |
| 2106 * Otherwise put it at 1/2 of the screen. | |
| 2107 */ | |
| 2108 if (line_count >= curwin->w_height && line_count > min_scroll) | |
| 2109 scroll_cursor_halfway(FALSE); | |
| 2110 else | |
| 2111 scrollup(line_count, TRUE); | |
| 2112 | |
| 2113 /* | |
| 2114 * If topline didn't change we need to restore w_botline and w_empty_rows | |
| 2115 * (we changed them). | |
| 2116 * If topline did change, update_screen() will set botline. | |
| 2117 */ | |
| 2118 if (curwin->w_topline == old_topline && set_topbot) | |
| 2119 { | |
| 2120 curwin->w_botline = old_botline; | |
| 2121 curwin->w_empty_rows = old_empty_rows; | |
| 2122 curwin->w_valid = old_valid; | |
| 2123 } | |
| 2124 curwin->w_valid |= VALID_TOPLINE; | |
| 2125 } | |
| 2126 | |
| 2127 /* | |
| 2128 * Recompute topline to put the cursor halfway the window | |
| 2129 * If "atend" is TRUE, also put it halfway at the end of the file. | |
| 2130 */ | |
| 2131 void | |
|
7829
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commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2132 scroll_cursor_halfway(int atend) |
| 7 | 2133 { |
| 2134 int above = 0; | |
| 2135 linenr_T topline; | |
| 2136 #ifdef FEAT_DIFF | |
| 2137 int topfill = 0; | |
| 2138 #endif | |
| 2139 int below = 0; | |
| 2140 int used; | |
| 2141 lineoff_T loff; | |
| 2142 lineoff_T boff; | |
| 5661 | 2143 #ifdef FEAT_DIFF |
| 5653 | 2144 linenr_T old_topline = curwin->w_topline; |
| 5661 | 2145 #endif |
| 7 | 2146 |
| 2147 loff.lnum = boff.lnum = curwin->w_cursor.lnum; | |
| 2148 #ifdef FEAT_FOLDING | |
| 2149 (void)hasFolding(loff.lnum, &loff.lnum, &boff.lnum); | |
| 2150 #endif | |
| 2151 #ifdef FEAT_DIFF | |
| 2152 used = plines_nofill(loff.lnum); | |
| 2153 loff.fill = 0; | |
| 2154 boff.fill = 0; | |
| 2155 #else | |
| 2156 used = plines(loff.lnum); | |
| 2157 #endif | |
| 2158 topline = loff.lnum; | |
| 2159 while (topline > 1) | |
| 2160 { | |
| 2161 if (below <= above) /* add a line below the cursor first */ | |
| 2162 { | |
| 2163 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
| 2164 { | |
| 2165 botline_forw(&boff); | |
| 2166 used += boff.height; | |
| 2167 if (used > curwin->w_height) | |
| 2168 break; | |
| 2169 below += boff.height; | |
| 2170 } | |
| 2171 else | |
| 2172 { | |
| 2173 ++below; /* count a "~" line */ | |
| 2174 if (atend) | |
| 2175 ++used; | |
| 2176 } | |
| 2177 } | |
| 2178 | |
| 2179 if (below > above) /* add a line above the cursor */ | |
| 2180 { | |
| 2181 topline_back(&loff); | |
|
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diff
changeset
|
2182 if (loff.height == MAXCOL) |
|
8ca3c9ad0bee
updated for version 7.2.366
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parents:
2070
diff
changeset
|
2183 used = MAXCOL; |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2184 else |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2185 used += loff.height; |
| 7 | 2186 if (used > curwin->w_height) |
| 2187 break; | |
| 2188 above += loff.height; | |
| 2189 topline = loff.lnum; | |
| 2190 #ifdef FEAT_DIFF | |
| 2191 topfill = loff.fill; | |
| 2192 #endif | |
| 2193 } | |
| 2194 } | |
| 2195 #ifdef FEAT_FOLDING | |
| 2196 if (!hasFolding(topline, &curwin->w_topline, NULL)) | |
| 2197 #endif | |
| 2198 curwin->w_topline = topline; | |
| 2199 #ifdef FEAT_DIFF | |
| 2200 curwin->w_topfill = topfill; | |
| 5653 | 2201 if (old_topline > curwin->w_topline + curwin->w_height) |
| 2202 curwin->w_botfill = FALSE; | |
| 7 | 2203 check_topfill(curwin, FALSE); |
| 2204 #endif | |
| 2205 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2206 curwin->w_valid |= VALID_TOPLINE; | |
| 2207 } | |
| 2208 | |
| 2209 /* | |
| 2210 * Correct the cursor position so that it is in a part of the screen at least | |
|
15713
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Bram Moolenaar <Bram@vim.org>
parents:
15697
diff
changeset
|
2211 * 'scrolloff' lines from the top and bottom, if possible. |
| 7 | 2212 * If not possible, put it at the same position as scroll_cursor_halfway(). |
| 2213 * When called topline must be valid! | |
| 2214 */ | |
| 2215 void | |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2216 cursor_correct(void) |
| 7 | 2217 { |
| 2218 int above = 0; /* screen lines above topline */ | |
| 2219 linenr_T topline; | |
| 2220 int below = 0; /* screen lines below botline */ | |
| 2221 linenr_T botline; | |
| 2222 int above_wanted, below_wanted; | |
| 2223 linenr_T cln; /* Cursor Line Number */ | |
| 2224 int max_off; | |
|
15713
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patch 8.1.0864: cannot have a local value for 'scrolloff' and 'sidescrolloff'
Bram Moolenaar <Bram@vim.org>
parents:
15697
diff
changeset
|
2225 long so = get_scrolloff_value(); |
| 7 | 2226 |
| 2227 /* | |
| 2228 * How many lines we would like to have above/below the cursor depends on | |
| 2229 * whether the first/last line of the file is on screen. | |
| 2230 */ | |
|
15713
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patch 8.1.0864: cannot have a local value for 'scrolloff' and 'sidescrolloff'
Bram Moolenaar <Bram@vim.org>
parents:
15697
diff
changeset
|
2231 above_wanted = so; |
|
ad8b2c109b22
patch 8.1.0864: cannot have a local value for 'scrolloff' and 'sidescrolloff'
Bram Moolenaar <Bram@vim.org>
parents:
15697
diff
changeset
|
2232 below_wanted = so; |
| 7 | 2233 #ifdef FEAT_MOUSE |
| 1121 | 2234 if (mouse_dragging > 0) |
| 7 | 2235 { |
| 2236 above_wanted = mouse_dragging - 1; | |
| 2237 below_wanted = mouse_dragging - 1; | |
| 2238 } | |
| 2239 #endif | |
| 2240 if (curwin->w_topline == 1) | |
| 2241 { | |
| 2242 above_wanted = 0; | |
| 2243 max_off = curwin->w_height / 2; | |
| 2244 if (below_wanted > max_off) | |
| 2245 below_wanted = max_off; | |
| 2246 } | |
| 2247 validate_botline(); | |
| 2248 if (curwin->w_botline == curbuf->b_ml.ml_line_count + 1 | |
| 2249 #ifdef FEAT_MOUSE | |
| 1121 | 2250 && mouse_dragging == 0 |
| 7 | 2251 #endif |
| 2252 ) | |
| 2253 { | |
| 2254 below_wanted = 0; | |
| 2255 max_off = (curwin->w_height - 1) / 2; | |
| 2256 if (above_wanted > max_off) | |
| 2257 above_wanted = max_off; | |
| 2258 } | |
| 2259 | |
| 2260 /* | |
| 2261 * If there are sufficient file-lines above and below the cursor, we can | |
| 2262 * return now. | |
| 2263 */ | |
| 2264 cln = curwin->w_cursor.lnum; | |
| 2265 if (cln >= curwin->w_topline + above_wanted | |
| 2266 && cln < curwin->w_botline - below_wanted | |
| 2267 #ifdef FEAT_FOLDING | |
| 2268 && !hasAnyFolding(curwin) | |
| 2269 #endif | |
| 2270 ) | |
| 2271 return; | |
| 2272 | |
| 2273 /* | |
| 2274 * Narrow down the area where the cursor can be put by taking lines from | |
| 2275 * the top and the bottom until: | |
| 2276 * - the desired context lines are found | |
| 2277 * - the lines from the top is past the lines from the bottom | |
| 2278 */ | |
| 2279 topline = curwin->w_topline; | |
| 2280 botline = curwin->w_botline - 1; | |
| 2281 #ifdef FEAT_DIFF | |
| 2282 /* count filler lines as context */ | |
| 2283 above = curwin->w_topfill; | |
| 2284 below = curwin->w_filler_rows; | |
| 2285 #endif | |
| 2286 while ((above < above_wanted || below < below_wanted) && topline < botline) | |
| 2287 { | |
| 2288 if (below < below_wanted && (below <= above || above >= above_wanted)) | |
| 2289 { | |
| 2290 #ifdef FEAT_FOLDING | |
| 2291 if (hasFolding(botline, &botline, NULL)) | |
| 2292 ++below; | |
| 2293 else | |
| 2294 #endif | |
| 2295 below += plines(botline); | |
| 2296 --botline; | |
| 2297 } | |
| 2298 if (above < above_wanted && (above < below || below >= below_wanted)) | |
| 2299 { | |
| 2300 #ifdef FEAT_FOLDING | |
| 2301 if (hasFolding(topline, NULL, &topline)) | |
| 2302 ++above; | |
| 2303 else | |
| 2304 #endif | |
|
7103
84d318257a45
commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2305 above += PLINES_NOFILL(topline); |
|
84d318257a45
commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2306 #ifdef FEAT_DIFF |
| 7 | 2307 /* Count filler lines below this line as context. */ |
| 2308 if (topline < botline) | |
| 2309 above += diff_check_fill(curwin, topline + 1); | |
| 2310 #endif | |
| 2311 ++topline; | |
| 2312 } | |
| 2313 } | |
| 2314 if (topline == botline || botline == 0) | |
| 2315 curwin->w_cursor.lnum = topline; | |
| 2316 else if (topline > botline) | |
| 2317 curwin->w_cursor.lnum = botline; | |
| 2318 else | |
| 2319 { | |
| 2320 if (cln < topline && curwin->w_topline > 1) | |
| 2321 { | |
| 2322 curwin->w_cursor.lnum = topline; | |
| 2323 curwin->w_valid &= | |
| 2324 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
| 2325 } | |
| 2326 if (cln > botline && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 2327 { | |
| 2328 curwin->w_cursor.lnum = botline; | |
| 2329 curwin->w_valid &= | |
| 2330 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
| 2331 } | |
| 2332 } | |
| 2333 curwin->w_valid |= VALID_TOPLINE; | |
| 2334 } | |
| 2335 | |
|
7803
37c929c4a073
commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
Christian Brabandt <cb@256bit.org>
parents:
7103
diff
changeset
|
2336 static void get_scroll_overlap(lineoff_T *lp, int dir); |
| 7 | 2337 |
| 2338 /* | |
| 2339 * move screen 'count' pages up or down and update screen | |
| 2340 * | |
| 2341 * return FAIL for failure, OK otherwise | |
| 2342 */ | |
| 2343 int | |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2344 onepage(int dir, long count) |
| 7 | 2345 { |
| 2346 long n; | |
| 2347 int retval = OK; | |
| 2348 lineoff_T loff; | |
| 2349 linenr_T old_topline = curwin->w_topline; | |
|
15713
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patch 8.1.0864: cannot have a local value for 'scrolloff' and 'sidescrolloff'
Bram Moolenaar <Bram@vim.org>
parents:
15697
diff
changeset
|
2350 long so = get_scrolloff_value(); |
| 7 | 2351 |
| 2352 if (curbuf->b_ml.ml_line_count == 1) /* nothing to do */ | |
| 2353 { | |
| 2354 beep_flush(); | |
| 2355 return FAIL; | |
| 2356 } | |
| 2357 | |
| 2358 for ( ; count > 0; --count) | |
| 2359 { | |
| 2360 validate_botline(); | |
| 2361 /* | |
| 2362 * It's an error to move a page up when the first line is already on | |
| 2363 * the screen. It's an error to move a page down when the last line | |
| 2364 * is on the screen and the topline is 'scrolloff' lines from the | |
| 2365 * last line. | |
| 2366 */ | |
| 2367 if (dir == FORWARD | |
|
15713
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Bram Moolenaar <Bram@vim.org>
parents:
15697
diff
changeset
|
2368 ? ((curwin->w_topline >= curbuf->b_ml.ml_line_count - so) |
| 7 | 2369 && curwin->w_botline > curbuf->b_ml.ml_line_count) |
| 2370 : (curwin->w_topline == 1 | |
| 2371 #ifdef FEAT_DIFF | |
| 2372 && curwin->w_topfill == | |
| 2373 diff_check_fill(curwin, curwin->w_topline) | |
| 2374 #endif | |
| 2375 )) | |
| 2376 { | |
| 2377 beep_flush(); | |
| 2378 retval = FAIL; | |
| 2379 break; | |
| 2380 } | |
| 2381 | |
| 2382 #ifdef FEAT_DIFF | |
| 2383 loff.fill = 0; | |
| 2384 #endif | |
| 2385 if (dir == FORWARD) | |
| 2386 { | |
|
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cf988222b150
commit https://github.com/vim/vim/commit/a1f4cb93ba50ea9e40cd4b1f5592b8a6d1398660
Christian Brabandt <cb@256bit.org>
parents:
10295
diff
changeset
|
2387 if (ONE_WINDOW && p_window > 0 && p_window < Rows - 1) |
| 7 | 2388 { |
| 164 | 2389 /* Vi compatible scrolling */ |
| 2390 if (p_window <= 2) | |
| 2391 ++curwin->w_topline; | |
| 2392 else | |
| 2393 curwin->w_topline += p_window - 2; | |
| 2394 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
| 2395 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
| 2396 curwin->w_cursor.lnum = curwin->w_topline; | |
| 2397 } | |
| 2398 else if (curwin->w_botline > curbuf->b_ml.ml_line_count) | |
| 2399 { | |
| 2400 /* at end of file */ | |
| 7 | 2401 curwin->w_topline = curbuf->b_ml.ml_line_count; |
| 2402 #ifdef FEAT_DIFF | |
| 2403 curwin->w_topfill = 0; | |
| 2404 #endif | |
| 2405 curwin->w_valid &= ~(VALID_WROW|VALID_CROW); | |
| 2406 } | |
| 2407 else | |
| 2408 { | |
| 2409 /* For the overlap, start with the line just below the window | |
| 2410 * and go upwards. */ | |
| 2411 loff.lnum = curwin->w_botline; | |
| 2412 #ifdef FEAT_DIFF | |
| 2413 loff.fill = diff_check_fill(curwin, loff.lnum) | |
| 2414 - curwin->w_filler_rows; | |
| 2415 #endif | |
| 2416 get_scroll_overlap(&loff, -1); | |
| 2417 curwin->w_topline = loff.lnum; | |
| 2418 #ifdef FEAT_DIFF | |
| 2419 curwin->w_topfill = loff.fill; | |
| 2420 check_topfill(curwin, FALSE); | |
| 2421 #endif | |
| 2422 curwin->w_cursor.lnum = curwin->w_topline; | |
| 2423 curwin->w_valid &= ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW| | |
| 2424 VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2425 } | |
| 2426 } | |
| 2427 else /* dir == BACKWARDS */ | |
| 2428 { | |
| 2429 #ifdef FEAT_DIFF | |
| 2430 if (curwin->w_topline == 1) | |
| 2431 { | |
| 2432 /* Include max number of filler lines */ | |
| 2433 max_topfill(); | |
| 2434 continue; | |
| 2435 } | |
| 2436 #endif | |
|
10349
cf988222b150
commit https://github.com/vim/vim/commit/a1f4cb93ba50ea9e40cd4b1f5592b8a6d1398660
Christian Brabandt <cb@256bit.org>
parents:
10295
diff
changeset
|
2437 if (ONE_WINDOW && p_window > 0 && p_window < Rows - 1) |
| 164 | 2438 { |
| 2439 /* Vi compatible scrolling (sort of) */ | |
| 2440 if (p_window <= 2) | |
| 2441 --curwin->w_topline; | |
| 2442 else | |
| 2443 curwin->w_topline -= p_window - 2; | |
| 2444 if (curwin->w_topline < 1) | |
| 2445 curwin->w_topline = 1; | |
| 2446 curwin->w_cursor.lnum = curwin->w_topline + p_window - 1; | |
| 2447 if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count) | |
| 2448 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; | |
| 2449 continue; | |
| 2450 } | |
| 2451 | |
| 7 | 2452 /* Find the line at the top of the window that is going to be the |
| 2453 * line at the bottom of the window. Make sure this results in | |
| 2454 * the same line as before doing CTRL-F. */ | |
| 2455 loff.lnum = curwin->w_topline - 1; | |
| 2456 #ifdef FEAT_DIFF | |
| 2457 loff.fill = diff_check_fill(curwin, loff.lnum + 1) | |
| 2458 - curwin->w_topfill; | |
| 2459 #endif | |
| 2460 get_scroll_overlap(&loff, 1); | |
| 2461 | |
| 2462 if (loff.lnum >= curbuf->b_ml.ml_line_count) | |
| 2463 { | |
| 2464 loff.lnum = curbuf->b_ml.ml_line_count; | |
| 2465 #ifdef FEAT_DIFF | |
| 2466 loff.fill = 0; | |
| 2467 } | |
| 2468 else | |
| 2469 { | |
| 2470 botline_topline(&loff); | |
| 2471 #endif | |
| 2472 } | |
| 2473 curwin->w_cursor.lnum = loff.lnum; | |
| 2474 | |
| 2475 /* Find the line just above the new topline to get the right line | |
| 2476 * at the bottom of the window. */ | |
| 2477 n = 0; | |
| 2478 while (n <= curwin->w_height && loff.lnum >= 1) | |
| 2479 { | |
| 2480 topline_back(&loff); | |
|
2082
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parents:
2070
diff
changeset
|
2481 if (loff.height == MAXCOL) |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2482 n = MAXCOL; |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2483 else |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2484 n += loff.height; |
| 7 | 2485 } |
|
2082
8ca3c9ad0bee
updated for version 7.2.366
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parents:
2070
diff
changeset
|
2486 if (loff.lnum < 1) /* at begin of file */ |
| 7 | 2487 { |
| 2488 curwin->w_topline = 1; | |
| 2489 #ifdef FEAT_DIFF | |
| 2490 max_topfill(); | |
| 2491 #endif | |
| 2492 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 2493 } | |
| 2494 else | |
| 2495 { | |
| 2496 /* Go two lines forward again. */ | |
| 2497 #ifdef FEAT_DIFF | |
| 2498 topline_botline(&loff); | |
| 2499 #endif | |
| 2500 botline_forw(&loff); | |
| 2501 botline_forw(&loff); | |
| 2502 #ifdef FEAT_DIFF | |
| 2503 botline_topline(&loff); | |
| 2504 #endif | |
| 2505 #ifdef FEAT_FOLDING | |
| 2506 /* We're at the wrong end of a fold now. */ | |
| 2507 (void)hasFolding(loff.lnum, &loff.lnum, NULL); | |
| 2508 #endif | |
| 2509 | |
| 2510 /* Always scroll at least one line. Avoid getting stuck on | |
| 2511 * very long lines. */ | |
| 2512 if (loff.lnum >= curwin->w_topline | |
| 2513 #ifdef FEAT_DIFF | |
| 2514 && (loff.lnum > curwin->w_topline | |
| 2515 || loff.fill >= curwin->w_topfill) | |
| 2516 #endif | |
| 2517 ) | |
| 2518 { | |
| 2519 #ifdef FEAT_DIFF | |
| 2520 /* First try using the maximum number of filler lines. If | |
| 2521 * that's not enough, backup one line. */ | |
| 2522 loff.fill = curwin->w_topfill; | |
| 2523 if (curwin->w_topfill < diff_check_fill(curwin, | |
| 2524 curwin->w_topline)) | |
| 2525 max_topfill(); | |
| 2526 if (curwin->w_topfill == loff.fill) | |
| 2527 #endif | |
| 2528 { | |
| 2529 --curwin->w_topline; | |
| 2530 #ifdef FEAT_DIFF | |
| 2531 curwin->w_topfill = 0; | |
| 2532 #endif | |
| 2533 } | |
| 2534 comp_botline(curwin); | |
| 2535 curwin->w_cursor.lnum = curwin->w_botline - 1; | |
| 5764 | 2536 curwin->w_valid &= |
| 2537 ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW|VALID_CROW); | |
| 7 | 2538 } |
| 2539 else | |
| 2540 { | |
| 2541 curwin->w_topline = loff.lnum; | |
| 2542 #ifdef FEAT_DIFF | |
| 2543 curwin->w_topfill = loff.fill; | |
| 2544 check_topfill(curwin, FALSE); | |
| 2545 #endif | |
| 2546 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 2547 } | |
| 2548 } | |
| 2549 } | |
| 2550 } | |
| 2551 #ifdef FEAT_FOLDING | |
| 2552 foldAdjustCursor(); | |
| 2553 #endif | |
| 2554 cursor_correct(); | |
|
10102
b80ad55d62d8
commit https://github.com/vim/vim/commit/bc54f3f3fed4dc3556df8c46cee6739d211b0eb2
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
2555 check_cursor_col(); |
| 161 | 2556 if (retval == OK) |
| 2557 beginline(BL_SOL | BL_FIX); | |
| 7 | 2558 curwin->w_valid &= ~(VALID_WCOL|VALID_WROW|VALID_VIRTCOL); |
| 2559 | |
|
14317
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2560 if (retval == OK && dir == FORWARD) |
| 7 | 2561 { |
|
14317
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
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parents:
13384
diff
changeset
|
2562 // Avoid the screen jumping up and down when 'scrolloff' is non-zero. |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
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parents:
13384
diff
changeset
|
2563 // But make sure we scroll at least one line (happens with mix of long |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
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parents:
13384
diff
changeset
|
2564 // wrapping lines and non-wrapping line). |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
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parents:
13384
diff
changeset
|
2565 if (check_top_offset()) |
|
1bc96dbb5498
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parents:
13384
diff
changeset
|
2566 { |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
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parents:
13384
diff
changeset
|
2567 scroll_cursor_top(1, FALSE); |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
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parents:
13384
diff
changeset
|
2568 if (curwin->w_topline <= old_topline |
| 7 | 2569 && old_topline < curbuf->b_ml.ml_line_count) |
|
14317
1bc96dbb5498
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Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2570 { |
|
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
|
2571 curwin->w_topline = old_topline + 1; |
| 7 | 2572 #ifdef FEAT_FOLDING |
|
14317
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parents:
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diff
changeset
|
2573 (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
|
2574 #endif |
|
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
|
2575 } |
|
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
|
2576 } |
|
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
|
2577 #ifdef FEAT_FOLDING |
|
1bc96dbb5498
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parents:
13384
diff
changeset
|
2578 else if (curwin->w_botline > curbuf->b_ml.ml_line_count) |
| 7 | 2579 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
| 2580 #endif | |
| 2581 } | |
| 2582 | |
| 2583 redraw_later(VALID); | |
| 2584 return retval; | |
| 2585 } | |
| 2586 | |
| 2587 /* | |
| 2588 * Decide how much overlap to use for page-up or page-down scrolling. | |
| 2589 * This is symmetric, so that doing both keeps the same lines displayed. | |
| 2590 * Three lines are examined: | |
| 2591 * | |
| 2592 * before CTRL-F after CTRL-F / before CTRL-B | |
| 2593 * etc. l1 | |
| 2594 * l1 last but one line ------------ | |
| 2595 * l2 last text line l2 top text line | |
| 2596 * ------------- l3 second text line | |
| 2597 * l3 etc. | |
| 2598 */ | |
| 2599 static void | |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2600 get_scroll_overlap(lineoff_T *lp, int dir) |
| 7 | 2601 { |
| 2602 int h1, h2, h3, h4; | |
| 2603 int min_height = curwin->w_height - 2; | |
| 2604 lineoff_T loff0, loff1, loff2; | |
| 2605 | |
| 2606 #ifdef FEAT_DIFF | |
| 2607 if (lp->fill > 0) | |
| 2608 lp->height = 1; | |
| 2609 else | |
| 2610 lp->height = plines_nofill(lp->lnum); | |
| 2611 #else | |
| 2612 lp->height = plines(lp->lnum); | |
| 2613 #endif | |
| 2614 h1 = lp->height; | |
| 2615 if (h1 > min_height) | |
| 2616 return; /* no overlap */ | |
| 2617 | |
| 2618 loff0 = *lp; | |
| 2619 if (dir > 0) | |
| 2620 botline_forw(lp); | |
| 2621 else | |
| 2622 topline_back(lp); | |
| 2623 h2 = lp->height; | |
| 3968 | 2624 if (h2 == MAXCOL || h2 + h1 > min_height) |
| 7 | 2625 { |
| 2626 *lp = loff0; /* no overlap */ | |
| 2627 return; | |
| 2628 } | |
| 2629 | |
| 2630 loff1 = *lp; | |
| 2631 if (dir > 0) | |
| 2632 botline_forw(lp); | |
| 2633 else | |
| 2634 topline_back(lp); | |
| 2635 h3 = lp->height; | |
| 3968 | 2636 if (h3 == MAXCOL || h3 + h2 > min_height) |
| 7 | 2637 { |
| 2638 *lp = loff0; /* no overlap */ | |
| 2639 return; | |
| 2640 } | |
| 2641 | |
| 2642 loff2 = *lp; | |
| 2643 if (dir > 0) | |
| 2644 botline_forw(lp); | |
| 2645 else | |
| 2646 topline_back(lp); | |
| 2647 h4 = lp->height; | |
| 3968 | 2648 if (h4 == MAXCOL || h4 + h3 + h2 > min_height || h3 + h2 + h1 > min_height) |
| 7 | 2649 *lp = loff1; /* 1 line overlap */ |
| 2650 else | |
| 2651 *lp = loff2; /* 2 lines overlap */ | |
| 2652 return; | |
| 2653 } | |
| 2654 | |
| 2655 /* | |
| 2656 * Scroll 'scroll' lines up or down. | |
| 2657 */ | |
| 2658 void | |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2659 halfpage(int flag, linenr_T Prenum) |
| 7 | 2660 { |
| 2661 long scrolled = 0; | |
| 2662 int i; | |
| 2663 int n; | |
| 2664 int room; | |
| 2665 | |
| 2666 if (Prenum) | |
| 2667 curwin->w_p_scr = (Prenum > curwin->w_height) ? | |
| 2668 curwin->w_height : Prenum; | |
| 2669 n = (curwin->w_p_scr <= curwin->w_height) ? | |
| 2670 curwin->w_p_scr : curwin->w_height; | |
| 2671 | |
|
11258
84f71a8a5f2c
patch 8.0.0515: ml_get errors in silent Ex mode
Christian Brabandt <cb@256bit.org>
parents:
11121
diff
changeset
|
2672 update_topline(); |
| 7 | 2673 validate_botline(); |
| 2674 room = curwin->w_empty_rows; | |
| 2675 #ifdef FEAT_DIFF | |
| 2676 room += curwin->w_filler_rows; | |
| 2677 #endif | |
| 2678 if (flag) | |
| 2679 { | |
| 2680 /* | |
| 2681 * scroll the text up | |
| 2682 */ | |
| 2683 while (n > 0 && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 2684 { | |
| 2685 #ifdef FEAT_DIFF | |
| 2686 if (curwin->w_topfill > 0) | |
| 2687 { | |
| 2688 i = 1; | |
| 2689 if (--n < 0 && scrolled > 0) | |
| 2690 break; | |
| 2691 --curwin->w_topfill; | |
| 2692 } | |
| 2693 else | |
| 2694 #endif | |
| 2695 { | |
|
7103
84d318257a45
commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2696 i = PLINES_NOFILL(curwin->w_topline); |
| 7 | 2697 n -= i; |
| 2698 if (n < 0 && scrolled > 0) | |
| 2699 break; | |
| 2700 #ifdef FEAT_FOLDING | |
| 2701 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
| 2702 #endif | |
| 2703 ++curwin->w_topline; | |
| 2704 #ifdef FEAT_DIFF | |
| 2705 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 2706 #endif | |
| 2707 | |
| 2708 if (curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
| 2709 { | |
| 2710 ++curwin->w_cursor.lnum; | |
| 2711 curwin->w_valid &= | |
| 2712 ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
| 2713 } | |
| 2714 } | |
| 2715 curwin->w_valid &= ~(VALID_CROW|VALID_WROW); | |
| 2716 scrolled += i; | |
| 2717 | |
| 2718 /* | |
| 2719 * Correct w_botline for changed w_topline. | |
| 2720 * Won't work when there are filler lines. | |
| 2721 */ | |
| 2722 #ifdef FEAT_DIFF | |
| 2723 if (curwin->w_p_diff) | |
| 2724 curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2725 else | |
| 2726 #endif | |
| 2727 { | |
| 2728 room += i; | |
| 2729 do | |
| 2730 { | |
| 2731 i = plines(curwin->w_botline); | |
| 2732 if (i > room) | |
| 2733 break; | |
| 2734 #ifdef FEAT_FOLDING | |
| 2735 (void)hasFolding(curwin->w_botline, NULL, | |
| 2736 &curwin->w_botline); | |
| 2737 #endif | |
| 2738 ++curwin->w_botline; | |
| 2739 room -= i; | |
| 2740 } while (curwin->w_botline <= curbuf->b_ml.ml_line_count); | |
| 2741 } | |
| 2742 } | |
| 2743 | |
| 2744 /* | |
| 2745 * When hit bottom of the file: move cursor down. | |
| 2746 */ | |
| 2747 if (n > 0) | |
| 2748 { | |
| 2749 # ifdef FEAT_FOLDING | |
| 2750 if (hasAnyFolding(curwin)) | |
| 2751 { | |
| 2752 while (--n >= 0 | |
| 2753 && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
| 2754 { | |
| 2755 (void)hasFolding(curwin->w_cursor.lnum, NULL, | |
| 2756 &curwin->w_cursor.lnum); | |
| 2757 ++curwin->w_cursor.lnum; | |
| 2758 } | |
| 2759 } | |
| 2760 else | |
| 2761 # endif | |
| 2762 curwin->w_cursor.lnum += n; | |
| 2763 check_cursor_lnum(); | |
| 2764 } | |
| 2765 } | |
| 2766 else | |
| 2767 { | |
| 2768 /* | |
| 2769 * scroll the text down | |
| 2770 */ | |
| 2771 while (n > 0 && curwin->w_topline > 1) | |
| 2772 { | |
| 2773 #ifdef FEAT_DIFF | |
| 2774 if (curwin->w_topfill < diff_check_fill(curwin, curwin->w_topline)) | |
| 2775 { | |
| 2776 i = 1; | |
|
16042
7952be788a49
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Bram Moolenaar <Bram@vim.org>
parents:
15713
diff
changeset
|
2777 --n; |
| 7 | 2778 ++curwin->w_topfill; |
| 2779 } | |
| 2780 else | |
| 2781 #endif | |
| 2782 { | |
|
7103
84d318257a45
commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2783 i = PLINES_NOFILL(curwin->w_topline - 1); |
| 7 | 2784 n -= i; |
| 2785 if (n < 0 && scrolled > 0) | |
| 2786 break; | |
| 2787 --curwin->w_topline; | |
| 2788 #ifdef FEAT_FOLDING | |
| 2789 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 2790 #endif | |
| 2791 #ifdef FEAT_DIFF | |
| 2792 curwin->w_topfill = 0; | |
| 2793 #endif | |
| 2794 } | |
| 2795 curwin->w_valid &= ~(VALID_CROW|VALID_WROW| | |
| 2796 VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2797 scrolled += i; | |
| 2798 if (curwin->w_cursor.lnum > 1) | |
| 2799 { | |
| 2800 --curwin->w_cursor.lnum; | |
| 2801 curwin->w_valid &= ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
| 2802 } | |
| 2803 } | |
|
16042
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Bram Moolenaar <Bram@vim.org>
parents:
15713
diff
changeset
|
2804 |
| 7 | 2805 /* |
| 2806 * When hit top of the file: move cursor up. | |
| 2807 */ | |
| 2808 if (n > 0) | |
| 2809 { | |
| 2810 if (curwin->w_cursor.lnum <= (linenr_T)n) | |
| 2811 curwin->w_cursor.lnum = 1; | |
| 2812 else | |
| 2813 # ifdef FEAT_FOLDING | |
| 2814 if (hasAnyFolding(curwin)) | |
| 2815 { | |
| 2816 while (--n >= 0 && curwin->w_cursor.lnum > 1) | |
| 2817 { | |
| 2818 --curwin->w_cursor.lnum; | |
| 2819 (void)hasFolding(curwin->w_cursor.lnum, | |
| 2820 &curwin->w_cursor.lnum, NULL); | |
| 2821 } | |
| 2822 } | |
| 2823 else | |
| 2824 # endif | |
| 2825 curwin->w_cursor.lnum -= n; | |
| 2826 } | |
| 2827 } | |
| 2828 # ifdef FEAT_FOLDING | |
| 2829 /* Move cursor to first line of closed fold. */ | |
| 2830 foldAdjustCursor(); | |
| 2831 # endif | |
| 2832 #ifdef FEAT_DIFF | |
| 2833 check_topfill(curwin, !flag); | |
| 2834 #endif | |
| 2835 cursor_correct(); | |
| 2836 beginline(BL_SOL | BL_FIX); | |
| 2837 redraw_later(VALID); | |
| 2838 } | |
|
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parents:
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diff
changeset
|
2839 |
|
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changeset
|
2840 void |
|
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2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2841 do_check_cursorbind(void) |
|
2250
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parents:
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diff
changeset
|
2842 { |
|
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parents:
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diff
changeset
|
2843 linenr_T line = curwin->w_cursor.lnum; |
| 3415 | 2844 colnr_T col = curwin->w_cursor.col; |
| 2845 colnr_T coladd = curwin->w_cursor.coladd; | |
| 3433 | 2846 colnr_T curswant = curwin->w_curswant; |
| 2847 int set_curswant = curwin->w_set_curswant; | |
|
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parents:
2210
diff
changeset
|
2848 win_T *old_curwin = curwin; |
|
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diff
changeset
|
2849 buf_T *old_curbuf = curbuf; |
| 2693 | 2850 int restart_edit_save; |
|
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diff
changeset
|
2851 int old_VIsual_select = VIsual_select; |
|
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changeset
|
2852 int old_VIsual_active = VIsual_active; |
|
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changeset
|
2853 |
|
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parents:
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diff
changeset
|
2854 /* |
|
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parents:
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diff
changeset
|
2855 * loop through the cursorbound windows |
|
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parents:
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diff
changeset
|
2856 */ |
|
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parents:
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changeset
|
2857 VIsual_select = VIsual_active = 0; |
|
9649
fd9727ae3c49
commit https://github.com/vim/vim/commit/2932359000b2f918d5fade79ea4d124d5943cd07
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parents:
8643
diff
changeset
|
2858 FOR_ALL_WINDOWS(curwin) |
|
2250
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|
2859 { |
|
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changeset
|
2860 curbuf = curwin->w_buffer; |
|
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changeset
|
2861 /* skip original window and windows with 'noscrollbind' */ |
|
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changeset
|
2862 if (curwin != old_curwin && curwin->w_p_crb) |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
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|
2863 { |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
2864 # ifdef FEAT_DIFF |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2865 if (curwin->w_p_diff) |
|
10295
d0b74b18e4b5
commit https://github.com/vim/vim/commit/025e3e0bafbc85cc4e365145af711edf99d0a90d
Christian Brabandt <cb@256bit.org>
parents:
10102
diff
changeset
|
2866 curwin->w_cursor.lnum = |
|
d0b74b18e4b5
commit https://github.com/vim/vim/commit/025e3e0bafbc85cc4e365145af711edf99d0a90d
Christian Brabandt <cb@256bit.org>
parents:
10102
diff
changeset
|
2867 diff_get_corresponding_line(old_curbuf, line); |
|
2250
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2868 else |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2869 # endif |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2870 curwin->w_cursor.lnum = line; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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parents:
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diff
changeset
|
2871 curwin->w_cursor.col = col; |
| 3415 | 2872 curwin->w_cursor.coladd = coladd; |
| 3433 | 2873 curwin->w_curswant = curswant; |
| 2874 curwin->w_set_curswant = set_curswant; | |
|
2250
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parents:
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diff
changeset
|
2875 |
| 2693 | 2876 /* Make sure the cursor is in a valid position. Temporarily set |
| 2877 * "restart_edit" to allow the cursor to be beyond the EOL. */ | |
| 2878 restart_edit_save = restart_edit; | |
| 2879 restart_edit = TRUE; | |
|
2250
1bac28a53fae
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parents:
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2880 check_cursor(); |
|
10607
e39300d3d2cf
patch 8.0.0193: accidentally removed #ifdef
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parents:
10597
diff
changeset
|
2881 # ifdef FEAT_SYN_HL |
|
10597
472bff31a20a
patch 8.0.0188: redrawing for 'cursorbind' is inefficient
Christian Brabandt <cb@256bit.org>
parents:
10585
diff
changeset
|
2882 if (curwin->w_p_cul || curwin->w_p_cuc) |
|
10583
f91c0376f2c6
patch 8.0.0181: with cursorbind set cursor column highlighting is off
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parents:
10349
diff
changeset
|
2883 validate_cursor(); |
|
10607
e39300d3d2cf
patch 8.0.0193: accidentally removed #ifdef
Christian Brabandt <cb@256bit.org>
parents:
10597
diff
changeset
|
2884 # endif |
| 2693 | 2885 restart_edit = restart_edit_save; |
|
2250
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Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
2886 /* Correct cursor for multi-byte character. */ |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
2887 if (has_mbyte) |
|
1bac28a53fae
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Bram Moolenaar <bram@vim.org>
parents:
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diff
changeset
|
2888 mb_adjust_cursor(); |
|
10597
472bff31a20a
patch 8.0.0188: redrawing for 'cursorbind' is inefficient
Christian Brabandt <cb@256bit.org>
parents:
10585
diff
changeset
|
2889 redraw_later(VALID); |
|
2250
1bac28a53fae
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Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2890 |
| 2688 | 2891 /* Only scroll when 'scrollbind' hasn't done this. */ |
| 2892 if (!curwin->w_p_scb) | |
| 2893 update_topline(); | |
|
2250
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Bram Moolenaar <bram@vim.org>
parents:
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diff
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|
2894 curwin->w_redr_status = TRUE; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2895 } |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2896 } |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2897 |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2898 /* |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2899 * reset current-window |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2900 */ |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2901 VIsual_select = old_VIsual_select; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2902 VIsual_active = old_VIsual_active; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2903 curwin = old_curwin; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2904 curbuf = old_curbuf; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2905 } |