Mercurial > vim
annotate src/move.c @ 18867:c9409f359583
Added tag v8.1.2419 for changeset a686560cf6c90b9917be2eb06cb57b592bfeb541
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Wed, 11 Dec 2019 19:15:05 +0100 |
| parents | 49b78d6465e5 |
| children | fb2d26bc8ca1 |
| 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; |
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193 int save_so = *so_ptr; |
| 7 | 194 |
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195 /* If there is no valid screen and when the window height is zero just use |
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196 * the cursor line. */ |
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197 if (!screen_valid(TRUE) || curwin->w_height == 0) |
| 6247 | 198 { |
| 199 curwin->w_topline = curwin->w_cursor.lnum; | |
| 200 curwin->w_botline = curwin->w_topline; | |
| 201 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 202 curwin->w_scbind_pos = 1; | |
| 203 return; | |
| 204 } | |
| 205 | |
| 7 | 206 check_cursor_moved(curwin); |
| 207 if (curwin->w_valid & VALID_TOPLINE) | |
| 208 return; | |
| 209 | |
| 210 /* When dragging with the mouse, don't scroll that quickly */ | |
| 1121 | 211 if (mouse_dragging > 0) |
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212 *so_ptr = mouse_dragging - 1; |
| 7 | 213 |
| 214 old_topline = curwin->w_topline; | |
| 215 #ifdef FEAT_DIFF | |
| 216 old_topfill = curwin->w_topfill; | |
| 217 #endif | |
| 218 | |
| 219 /* | |
| 220 * If the buffer is empty, always set topline to 1. | |
| 221 */ | |
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222 if (BUFEMPTY()) /* special case - file is empty */ |
| 7 | 223 { |
| 224 if (curwin->w_topline != 1) | |
| 225 redraw_later(NOT_VALID); | |
| 226 curwin->w_topline = 1; | |
| 227 curwin->w_botline = 2; | |
| 228 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 229 curwin->w_scbind_pos = 1; | |
| 230 } | |
| 231 | |
| 232 /* | |
| 233 * If the cursor is above or near the top of the window, scroll the window | |
| 234 * to show the line the cursor is in, with 'scrolloff' context. | |
| 235 */ | |
| 236 else | |
| 237 { | |
| 238 if (curwin->w_topline > 1) | |
| 239 { | |
| 240 /* If the cursor is above topline, scrolling is always needed. | |
| 241 * If the cursor is far below topline and there is no folding, | |
| 242 * scrolling down is never needed. */ | |
| 243 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 244 check_topline = TRUE; | |
| 245 else if (check_top_offset()) | |
| 246 check_topline = TRUE; | |
| 247 } | |
| 248 #ifdef FEAT_DIFF | |
| 249 /* Check if there are more filler lines than allowed. */ | |
| 250 if (!check_topline && curwin->w_topfill > diff_check_fill(curwin, | |
| 251 curwin->w_topline)) | |
| 252 check_topline = TRUE; | |
| 253 #endif | |
| 254 | |
| 255 if (check_topline) | |
| 256 { | |
| 257 halfheight = curwin->w_height / 2 - 1; | |
| 258 if (halfheight < 2) | |
| 259 halfheight = 2; | |
| 260 | |
| 261 #ifdef FEAT_FOLDING | |
| 262 if (hasAnyFolding(curwin)) | |
| 263 { | |
| 264 /* Count the number of logical lines between the cursor and | |
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265 * topline + scrolloff (approximation of how much will be |
| 7 | 266 * scrolled). */ |
| 267 n = 0; | |
| 268 for (lnum = curwin->w_cursor.lnum; | |
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269 lnum < curwin->w_topline + *so_ptr; ++lnum) |
| 7 | 270 { |
| 271 ++n; | |
| 272 /* stop at end of file or when we know we are far off */ | |
| 273 if (lnum >= curbuf->b_ml.ml_line_count || n >= halfheight) | |
| 274 break; | |
| 275 (void)hasFolding(lnum, NULL, &lnum); | |
| 276 } | |
| 277 } | |
| 278 else | |
| 279 #endif | |
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280 n = curwin->w_topline + *so_ptr - curwin->w_cursor.lnum; |
| 7 | 281 |
| 282 /* If we weren't very close to begin with, we scroll to put the | |
| 283 * cursor in the middle of the window. Otherwise put the cursor | |
| 284 * near the top of the window. */ | |
| 285 if (n >= halfheight) | |
| 286 scroll_cursor_halfway(FALSE); | |
| 287 else | |
| 288 { | |
| 532 | 289 scroll_cursor_top(scrolljump_value(), FALSE); |
| 7 | 290 check_botline = TRUE; |
| 291 } | |
| 292 } | |
| 293 | |
| 294 else | |
| 295 { | |
| 296 #ifdef FEAT_FOLDING | |
| 297 /* Make sure topline is the first line of a fold. */ | |
| 298 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 299 #endif | |
| 300 check_botline = TRUE; | |
| 301 } | |
| 302 } | |
| 303 | |
| 304 /* | |
| 305 * If the cursor is below the bottom of the window, scroll the window | |
| 306 * to put the cursor on the window. | |
| 307 * When w_botline is invalid, recompute it first, to avoid a redraw later. | |
| 308 * If w_botline was approximated, we might need a redraw later in a few | |
| 309 * cases, but we don't want to spend (a lot of) time recomputing w_botline | |
| 310 * for every small change. | |
| 311 */ | |
| 312 if (check_botline) | |
| 313 { | |
| 314 if (!(curwin->w_valid & VALID_BOTLINE_AP)) | |
| 315 validate_botline(); | |
| 316 | |
| 317 if (curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 318 { | |
| 1744 | 319 if (curwin->w_cursor.lnum < curwin->w_botline) |
| 320 { | |
| 321 if (((long)curwin->w_cursor.lnum | |
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322 >= (long)curwin->w_botline - *so_ptr |
| 7 | 323 #ifdef FEAT_FOLDING |
| 324 || hasAnyFolding(curwin) | |
| 325 #endif | |
| 326 )) | |
| 1744 | 327 { |
| 7 | 328 lineoff_T loff; |
| 329 | |
| 1744 | 330 /* Cursor is (a few lines) above botline, check if there are |
| 331 * 'scrolloff' window lines below the cursor. If not, need to | |
| 332 * scroll. */ | |
| 7 | 333 n = curwin->w_empty_rows; |
| 334 loff.lnum = curwin->w_cursor.lnum; | |
| 335 #ifdef FEAT_FOLDING | |
| 336 /* In a fold go to its last line. */ | |
| 337 (void)hasFolding(loff.lnum, NULL, &loff.lnum); | |
| 338 #endif | |
| 339 #ifdef FEAT_DIFF | |
| 340 loff.fill = 0; | |
| 341 n += curwin->w_filler_rows; | |
| 342 #endif | |
| 343 loff.height = 0; | |
| 344 while (loff.lnum < curwin->w_botline | |
| 345 #ifdef FEAT_DIFF | |
| 346 && (loff.lnum + 1 < curwin->w_botline || loff.fill == 0) | |
| 347 #endif | |
| 348 ) | |
| 349 { | |
| 350 n += loff.height; | |
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351 if (n >= *so_ptr) |
| 7 | 352 break; |
| 353 botline_forw(&loff); | |
| 354 } | |
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355 if (n >= *so_ptr) |
| 7 | 356 /* sufficient context, no need to scroll */ |
| 357 check_botline = FALSE; | |
| 1744 | 358 } |
| 359 else | |
| 360 /* sufficient context, no need to scroll */ | |
| 361 check_botline = FALSE; | |
| 7 | 362 } |
| 363 if (check_botline) | |
| 364 { | |
| 365 #ifdef FEAT_FOLDING | |
| 366 if (hasAnyFolding(curwin)) | |
| 367 { | |
| 368 /* Count the number of logical lines between the cursor and | |
|
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369 * botline - scrolloff (approximation of how much will be |
| 7 | 370 * scrolled). */ |
| 371 line_count = 0; | |
| 372 for (lnum = curwin->w_cursor.lnum; | |
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373 lnum >= curwin->w_botline - *so_ptr; --lnum) |
| 7 | 374 { |
| 375 ++line_count; | |
| 376 /* stop at end of file or when we know we are far off */ | |
| 377 if (lnum <= 0 || line_count > curwin->w_height + 1) | |
| 378 break; | |
| 379 (void)hasFolding(lnum, &lnum, NULL); | |
| 380 } | |
| 381 } | |
| 382 else | |
| 383 #endif | |
| 384 line_count = curwin->w_cursor.lnum - curwin->w_botline | |
|
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385 + 1 + *so_ptr; |
| 7 | 386 if (line_count <= curwin->w_height + 1) |
| 532 | 387 scroll_cursor_bot(scrolljump_value(), FALSE); |
| 7 | 388 else |
| 389 scroll_cursor_halfway(FALSE); | |
| 390 } | |
| 391 } | |
| 392 } | |
| 393 curwin->w_valid |= VALID_TOPLINE; | |
| 394 | |
| 395 /* | |
| 396 * Need to redraw when topline changed. | |
| 397 */ | |
| 398 if (curwin->w_topline != old_topline | |
| 399 #ifdef FEAT_DIFF | |
| 400 || curwin->w_topfill != old_topfill | |
| 401 #endif | |
| 402 ) | |
| 403 { | |
| 3318 | 404 dollar_vcol = -1; |
| 740 | 405 if (curwin->w_skipcol != 0) |
| 7 | 406 { |
| 407 curwin->w_skipcol = 0; | |
| 408 redraw_later(NOT_VALID); | |
| 409 } | |
| 410 else | |
| 411 redraw_later(VALID); | |
| 412 /* May need to set w_skipcol when cursor in w_topline. */ | |
| 413 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 414 validate_cursor(); | |
| 415 } | |
| 416 | |
|
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417 *so_ptr = save_so; |
| 7 | 418 } |
| 419 | |
| 420 /* | |
| 532 | 421 * Return the scrolljump value to use for the current window. |
| 422 * When 'scrolljump' is positive use it as-is. | |
| 423 * When 'scrolljump' is negative use it as a percentage of the window height. | |
| 424 */ | |
| 425 static int | |
|
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426 scrolljump_value(void) |
| 532 | 427 { |
| 428 if (p_sj >= 0) | |
| 429 return (int)p_sj; | |
| 430 return (curwin->w_height * -p_sj) / 100; | |
| 431 } | |
| 432 | |
| 433 /* | |
| 7 | 434 * Return TRUE when there are not 'scrolloff' lines above the cursor for the |
| 435 * current window. | |
| 436 */ | |
| 437 static int | |
|
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438 check_top_offset(void) |
| 7 | 439 { |
| 440 lineoff_T loff; | |
| 441 int n; | |
|
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442 long so = get_scrolloff_value(); |
| 7 | 443 |
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444 if (curwin->w_cursor.lnum < curwin->w_topline + so |
| 7 | 445 #ifdef FEAT_FOLDING |
| 446 || hasAnyFolding(curwin) | |
| 447 #endif | |
| 448 ) | |
| 449 { | |
| 450 loff.lnum = curwin->w_cursor.lnum; | |
| 451 #ifdef FEAT_DIFF | |
| 452 loff.fill = 0; | |
| 453 n = curwin->w_topfill; /* always have this context */ | |
| 454 #else | |
| 455 n = 0; | |
| 456 #endif | |
| 457 /* Count the visible screen lines above the cursor line. */ | |
|
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458 while (n < so) |
| 7 | 459 { |
| 460 topline_back(&loff); | |
| 461 /* Stop when included a line above the window. */ | |
| 462 if (loff.lnum < curwin->w_topline | |
| 463 #ifdef FEAT_DIFF | |
| 464 || (loff.lnum == curwin->w_topline && loff.fill > 0) | |
| 465 #endif | |
| 466 ) | |
| 467 break; | |
| 468 n += loff.height; | |
| 469 } | |
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470 if (n < so) |
| 7 | 471 return TRUE; |
| 472 } | |
| 473 return FALSE; | |
| 474 } | |
| 475 | |
| 476 void | |
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477 update_curswant(void) |
| 7 | 478 { |
| 479 if (curwin->w_set_curswant) | |
| 480 { | |
| 481 validate_virtcol(); | |
| 482 curwin->w_curswant = curwin->w_virtcol; | |
| 483 curwin->w_set_curswant = FALSE; | |
| 484 } | |
| 485 } | |
| 486 | |
| 487 /* | |
| 488 * Check if the cursor has moved. Set the w_valid flag accordingly. | |
| 489 */ | |
| 490 void | |
|
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491 check_cursor_moved(win_T *wp) |
| 7 | 492 { |
| 493 if (wp->w_cursor.lnum != wp->w_valid_cursor.lnum) | |
| 494 { | |
| 495 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 496 |VALID_CHEIGHT|VALID_CROW|VALID_TOPLINE); | |
| 497 wp->w_valid_cursor = wp->w_cursor; | |
| 498 wp->w_valid_leftcol = wp->w_leftcol; | |
| 499 } | |
| 500 else if (wp->w_cursor.col != wp->w_valid_cursor.col | |
| 501 || wp->w_leftcol != wp->w_valid_leftcol | |
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502 || wp->w_cursor.coladd != wp->w_valid_cursor.coladd) |
| 7 | 503 { |
| 504 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL); | |
| 505 wp->w_valid_cursor.col = wp->w_cursor.col; | |
| 506 wp->w_valid_leftcol = wp->w_leftcol; | |
| 507 wp->w_valid_cursor.coladd = wp->w_cursor.coladd; | |
| 508 } | |
| 509 } | |
| 510 | |
| 511 /* | |
| 512 * Call this function when some window settings have changed, which require | |
| 513 * the cursor position, botline and topline to be recomputed and the window to | |
| 514 * be redrawn. E.g, when changing the 'wrap' option or folding. | |
| 515 */ | |
| 516 void | |
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517 changed_window_setting(void) |
| 7 | 518 { |
| 519 changed_window_setting_win(curwin); | |
| 520 } | |
| 521 | |
| 522 void | |
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523 changed_window_setting_win(win_T *wp) |
| 7 | 524 { |
| 525 wp->w_lines_valid = 0; | |
| 526 changed_line_abv_curs_win(wp); | |
| 527 wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP|VALID_TOPLINE); | |
| 528 redraw_win_later(wp, NOT_VALID); | |
| 529 } | |
| 530 | |
| 531 /* | |
| 532 * Set wp->w_topline to a certain number. | |
| 533 */ | |
| 534 void | |
|
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535 set_topline(win_T *wp, linenr_T lnum) |
| 7 | 536 { |
| 537 #ifdef FEAT_FOLDING | |
| 538 /* go to first of folded lines */ | |
| 539 (void)hasFoldingWin(wp, lnum, &lnum, NULL, TRUE, NULL); | |
| 540 #endif | |
| 541 /* Approximate the value of w_botline */ | |
| 542 wp->w_botline += lnum - wp->w_topline; | |
| 543 wp->w_topline = lnum; | |
| 1744 | 544 wp->w_topline_was_set = TRUE; |
| 7 | 545 #ifdef FEAT_DIFF |
| 546 wp->w_topfill = 0; | |
| 547 #endif | |
| 548 wp->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_TOPLINE); | |
| 549 /* Don't set VALID_TOPLINE here, 'scrolloff' needs to be checked. */ | |
| 550 redraw_later(VALID); | |
| 551 } | |
| 552 | |
| 553 /* | |
| 554 * Call this function when the length of the cursor line (in screen | |
| 555 * characters) has changed, and the change is before the cursor. | |
| 556 * Need to take care of w_botline separately! | |
| 557 */ | |
| 558 void | |
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559 changed_cline_bef_curs(void) |
| 7 | 560 { |
| 561 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 562 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 563 } | |
| 564 | |
| 565 void | |
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566 changed_cline_bef_curs_win(win_T *wp) |
| 7 | 567 { |
| 568 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 569 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 570 } | |
| 571 | |
| 572 /* | |
| 573 * Call this function when the length of a line (in screen characters) above | |
| 574 * the cursor have changed. | |
| 575 * Need to take care of w_botline separately! | |
| 576 */ | |
| 577 void | |
|
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578 changed_line_abv_curs(void) |
| 7 | 579 { |
| 580 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
| 581 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 582 } | |
| 583 | |
| 584 void | |
|
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585 changed_line_abv_curs_win(win_T *wp) |
| 7 | 586 { |
| 587 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
| 588 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 589 } | |
| 590 | |
| 591 /* | |
| 592 * Make sure the value of curwin->w_botline is valid. | |
| 593 */ | |
| 594 void | |
|
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595 validate_botline(void) |
| 7 | 596 { |
| 597 if (!(curwin->w_valid & VALID_BOTLINE)) | |
| 598 comp_botline(curwin); | |
| 599 } | |
| 600 | |
| 601 /* | |
| 602 * Mark curwin->w_botline as invalid (because of some change in the buffer). | |
| 603 */ | |
| 604 void | |
|
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|
605 invalidate_botline(void) |
| 7 | 606 { |
| 607 curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 608 } | |
| 609 | |
| 610 void | |
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611 invalidate_botline_win(win_T *wp) |
| 7 | 612 { |
| 613 wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 614 } | |
| 615 | |
| 616 void | |
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617 approximate_botline_win( |
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618 win_T *wp) |
| 7 | 619 { |
| 620 wp->w_valid &= ~VALID_BOTLINE; | |
| 621 } | |
| 622 | |
| 623 /* | |
| 624 * Return TRUE if curwin->w_wrow and curwin->w_wcol are valid. | |
| 625 */ | |
| 626 int | |
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627 cursor_valid(void) |
| 7 | 628 { |
| 629 check_cursor_moved(curwin); | |
| 630 return ((curwin->w_valid & (VALID_WROW|VALID_WCOL)) == | |
| 631 (VALID_WROW|VALID_WCOL)); | |
| 632 } | |
| 633 | |
| 634 /* | |
| 635 * Validate cursor position. Makes sure w_wrow and w_wcol are valid. | |
| 636 * w_topline must be valid, you may need to call update_topline() first! | |
| 637 */ | |
| 638 void | |
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639 validate_cursor(void) |
| 7 | 640 { |
| 641 check_cursor_moved(curwin); | |
| 642 if ((curwin->w_valid & (VALID_WCOL|VALID_WROW)) != (VALID_WCOL|VALID_WROW)) | |
| 643 curs_columns(TRUE); | |
| 644 } | |
| 645 | |
| 646 #if defined(FEAT_GUI) || defined(PROTO) | |
| 647 /* | |
| 648 * validate w_cline_row. | |
| 649 */ | |
| 650 void | |
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651 validate_cline_row(void) |
| 7 | 652 { |
| 653 /* | |
| 654 * First make sure that w_topline is valid (after moving the cursor). | |
| 655 */ | |
| 656 update_topline(); | |
| 657 check_cursor_moved(curwin); | |
| 658 if (!(curwin->w_valid & VALID_CROW)) | |
| 6441 | 659 curs_rows(curwin); |
| 7 | 660 } |
| 661 #endif | |
| 662 | |
| 663 /* | |
| 664 * Compute wp->w_cline_row and wp->w_cline_height, based on the current value | |
|
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665 * of wp->w_topline. |
| 7 | 666 */ |
| 667 static void | |
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668 curs_rows(win_T *wp) |
| 7 | 669 { |
| 670 linenr_T lnum; | |
| 671 int i; | |
| 672 int all_invalid; | |
| 673 int valid; | |
| 674 #ifdef FEAT_FOLDING | |
| 675 long fold_count; | |
| 676 #endif | |
| 677 | |
| 678 /* Check if wp->w_lines[].wl_size is invalid */ | |
| 679 all_invalid = (!redrawing() | |
| 680 || wp->w_lines_valid == 0 | |
| 681 || wp->w_lines[0].wl_lnum > wp->w_topline); | |
| 682 i = 0; | |
| 683 wp->w_cline_row = 0; | |
| 684 for (lnum = wp->w_topline; lnum < wp->w_cursor.lnum; ++i) | |
| 685 { | |
| 686 valid = FALSE; | |
| 687 if (!all_invalid && i < wp->w_lines_valid) | |
| 688 { | |
| 689 if (wp->w_lines[i].wl_lnum < lnum || !wp->w_lines[i].wl_valid) | |
| 690 continue; /* skip changed or deleted lines */ | |
| 691 if (wp->w_lines[i].wl_lnum == lnum) | |
| 692 { | |
| 693 #ifdef FEAT_FOLDING | |
| 694 /* Check for newly inserted lines below this row, in which | |
| 695 * case we need to check for folded lines. */ | |
| 696 if (!wp->w_buffer->b_mod_set | |
| 697 || wp->w_lines[i].wl_lastlnum < wp->w_cursor.lnum | |
| 698 || wp->w_buffer->b_mod_top | |
| 699 > wp->w_lines[i].wl_lastlnum + 1) | |
| 700 #endif | |
| 701 valid = TRUE; | |
| 702 } | |
| 703 else if (wp->w_lines[i].wl_lnum > lnum) | |
| 704 --i; /* hold at inserted lines */ | |
| 705 } | |
| 706 if (valid | |
| 707 #ifdef FEAT_DIFF | |
| 708 && (lnum != wp->w_topline || !wp->w_p_diff) | |
| 709 #endif | |
| 710 ) | |
| 711 { | |
| 712 #ifdef FEAT_FOLDING | |
| 713 lnum = wp->w_lines[i].wl_lastlnum + 1; | |
| 714 /* Cursor inside folded lines, don't count this row */ | |
| 715 if (lnum > wp->w_cursor.lnum) | |
| 716 break; | |
| 717 #else | |
| 718 ++lnum; | |
| 719 #endif | |
| 720 wp->w_cline_row += wp->w_lines[i].wl_size; | |
| 721 } | |
| 722 else | |
| 723 { | |
| 724 #ifdef FEAT_FOLDING | |
| 725 fold_count = foldedCount(wp, lnum, NULL); | |
| 726 if (fold_count) | |
| 727 { | |
| 728 lnum += fold_count; | |
| 729 if (lnum > wp->w_cursor.lnum) | |
| 730 break; | |
| 731 ++wp->w_cline_row; | |
| 732 } | |
| 733 else | |
| 734 #endif | |
| 735 #ifdef FEAT_DIFF | |
| 736 if (lnum == wp->w_topline) | |
| 737 wp->w_cline_row += plines_win_nofill(wp, lnum++, TRUE) | |
| 738 + wp->w_topfill; | |
| 739 else | |
| 740 #endif | |
| 741 wp->w_cline_row += plines_win(wp, lnum++, TRUE); | |
| 742 } | |
| 743 } | |
| 744 | |
| 745 check_cursor_moved(wp); | |
| 746 if (!(wp->w_valid & VALID_CHEIGHT)) | |
| 747 { | |
| 748 if (all_invalid | |
| 749 || i == wp->w_lines_valid | |
| 750 || (i < wp->w_lines_valid | |
| 751 && (!wp->w_lines[i].wl_valid | |
| 752 || wp->w_lines[i].wl_lnum != wp->w_cursor.lnum))) | |
| 753 { | |
| 754 #ifdef FEAT_DIFF | |
| 755 if (wp->w_cursor.lnum == wp->w_topline) | |
| 756 wp->w_cline_height = plines_win_nofill(wp, wp->w_cursor.lnum, | |
| 757 TRUE) + wp->w_topfill; | |
| 758 else | |
| 759 #endif | |
| 760 wp->w_cline_height = plines_win(wp, wp->w_cursor.lnum, TRUE); | |
| 761 #ifdef FEAT_FOLDING | |
| 762 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
| 763 NULL, NULL, TRUE, NULL); | |
| 764 #endif | |
| 765 } | |
| 766 else if (i > wp->w_lines_valid) | |
| 767 { | |
| 768 /* a line that is too long to fit on the last screen line */ | |
| 769 wp->w_cline_height = 0; | |
| 770 #ifdef FEAT_FOLDING | |
| 771 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
| 772 NULL, NULL, TRUE, NULL); | |
| 773 #endif | |
| 774 } | |
| 775 else | |
| 776 { | |
| 777 wp->w_cline_height = wp->w_lines[i].wl_size; | |
| 778 #ifdef FEAT_FOLDING | |
| 779 wp->w_cline_folded = wp->w_lines[i].wl_folded; | |
| 780 #endif | |
| 781 } | |
| 782 } | |
| 783 | |
| 5764 | 784 redraw_for_cursorline(curwin); |
| 7 | 785 wp->w_valid |= VALID_CROW|VALID_CHEIGHT; |
| 786 | |
| 787 } | |
| 788 | |
| 789 /* | |
| 790 * Validate curwin->w_virtcol only. | |
| 791 */ | |
| 792 void | |
|
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793 validate_virtcol(void) |
| 7 | 794 { |
| 795 validate_virtcol_win(curwin); | |
| 796 } | |
| 797 | |
| 798 /* | |
| 799 * Validate wp->w_virtcol only. | |
| 800 */ | |
| 801 void | |
|
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802 validate_virtcol_win(win_T *wp) |
| 7 | 803 { |
| 804 check_cursor_moved(wp); | |
| 805 if (!(wp->w_valid & VALID_VIRTCOL)) | |
| 806 { | |
| 807 getvvcol(wp, &wp->w_cursor, NULL, &(wp->w_virtcol), NULL); | |
| 808 wp->w_valid |= VALID_VIRTCOL; | |
| 740 | 809 #ifdef FEAT_SYN_HL |
|
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810 if (wp->w_p_cuc && !pum_visible()) |
| 740 | 811 redraw_win_later(wp, SOME_VALID); |
| 812 #endif | |
| 7 | 813 } |
| 814 } | |
| 815 | |
| 816 /* | |
| 817 * Validate curwin->w_cline_height only. | |
| 818 */ | |
| 819 static void | |
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820 validate_cheight(void) |
| 7 | 821 { |
| 822 check_cursor_moved(curwin); | |
| 823 if (!(curwin->w_valid & VALID_CHEIGHT)) | |
| 824 { | |
| 825 #ifdef FEAT_DIFF | |
| 826 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 827 curwin->w_cline_height = plines_nofill(curwin->w_cursor.lnum) | |
| 828 + curwin->w_topfill; | |
| 829 else | |
| 830 #endif | |
| 831 curwin->w_cline_height = plines(curwin->w_cursor.lnum); | |
| 832 #ifdef FEAT_FOLDING | |
| 833 curwin->w_cline_folded = hasFolding(curwin->w_cursor.lnum, NULL, NULL); | |
| 834 #endif | |
| 835 curwin->w_valid |= VALID_CHEIGHT; | |
| 836 } | |
| 837 } | |
| 838 | |
| 839 /* | |
| 1668 | 840 * Validate w_wcol and w_virtcol only. |
| 7 | 841 */ |
| 842 void | |
|
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843 validate_cursor_col(void) |
| 7 | 844 { |
| 845 colnr_T off; | |
| 846 colnr_T col; | |
|
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847 int width; |
| 7 | 848 |
| 849 validate_virtcol(); | |
| 850 if (!(curwin->w_valid & VALID_WCOL)) | |
| 851 { | |
| 852 col = curwin->w_virtcol; | |
| 853 off = curwin_col_off(); | |
| 854 col += off; | |
|
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855 width = curwin->w_width - off + curwin_col_off2(); |
| 7 | 856 |
| 857 /* long line wrapping, adjust curwin->w_wrow */ | |
| 1668 | 858 if (curwin->w_p_wrap |
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859 && col >= (colnr_T)curwin->w_width |
|
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860 && width > 0) |
|
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861 /* use same formula as what is used in curs_columns() */ |
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862 col -= ((col - curwin->w_width) / width + 1) * width; |
| 1668 | 863 if (col > (int)curwin->w_leftcol) |
| 864 col -= curwin->w_leftcol; | |
| 865 else | |
| 866 col = 0; | |
| 7 | 867 curwin->w_wcol = col; |
| 1668 | 868 |
| 7 | 869 curwin->w_valid |= VALID_WCOL; |
| 870 } | |
| 871 } | |
| 872 | |
| 873 /* | |
|
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874 * Compute offset of a window, occupied by absolute or relative line number, |
|
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875 * fold column and sign column (these don't move when scrolling horizontally). |
| 7 | 876 */ |
| 877 int | |
|
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878 win_col_off(win_T *wp) |
| 7 | 879 { |
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880 return (((wp->w_p_nu || wp->w_p_rnu) ? number_width(wp) + 1 : 0) |
| 7 | 881 #ifdef FEAT_CMDWIN |
| 882 + (cmdwin_type == 0 || wp != curwin ? 0 : 1) | |
| 883 #endif | |
| 884 #ifdef FEAT_FOLDING | |
| 885 + wp->w_p_fdc | |
| 886 #endif | |
| 887 #ifdef FEAT_SIGNS | |
|
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888 + (signcolumn_on(wp) ? 2 : 0) |
| 7 | 889 #endif |
| 890 ); | |
| 891 } | |
| 892 | |
| 893 int | |
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894 curwin_col_off(void) |
| 7 | 895 { |
| 896 return win_col_off(curwin); | |
| 897 } | |
| 898 | |
| 899 /* | |
| 900 * Return the difference in column offset for the second screen line of a | |
|
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901 * wrapped line. It's 8 if 'number' or 'relativenumber' is on and 'n' is in |
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902 * 'cpoptions'. |
| 7 | 903 */ |
| 904 int | |
|
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905 win_col_off2(win_T *wp) |
| 7 | 906 { |
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907 if ((wp->w_p_nu || wp->w_p_rnu) && vim_strchr(p_cpo, CPO_NUMCOL) != NULL) |
| 13 | 908 return number_width(wp) + 1; |
| 7 | 909 return 0; |
| 910 } | |
| 911 | |
| 912 int | |
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913 curwin_col_off2(void) |
| 7 | 914 { |
| 915 return win_col_off2(curwin); | |
| 916 } | |
| 917 | |
| 918 /* | |
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919 * Compute curwin->w_wcol and curwin->w_virtcol. |
| 7 | 920 * Also updates curwin->w_wrow and curwin->w_cline_row. |
| 921 * Also updates curwin->w_leftcol. | |
| 922 */ | |
| 923 void | |
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924 curs_columns( |
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925 int may_scroll) /* when TRUE, may scroll horizontally */ |
| 7 | 926 { |
| 927 int diff; | |
| 928 int extra; /* offset for first screen line */ | |
| 929 int off_left, off_right; | |
| 930 int n; | |
| 931 int p_lines; | |
| 932 int width = 0; | |
| 933 int textwidth; | |
| 934 int new_leftcol; | |
| 935 colnr_T startcol; | |
| 936 colnr_T endcol; | |
| 937 colnr_T prev_skipcol; | |
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938 long so = get_scrolloff_value(); |
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939 long siso = get_sidescrolloff_value(); |
| 7 | 940 |
| 941 /* | |
| 942 * First make sure that w_topline is valid (after moving the cursor). | |
| 943 */ | |
| 944 update_topline(); | |
| 945 | |
| 946 /* | |
| 947 * Next make sure that w_cline_row is valid. | |
| 948 */ | |
| 949 if (!(curwin->w_valid & VALID_CROW)) | |
| 6441 | 950 curs_rows(curwin); |
| 7 | 951 |
| 952 /* | |
| 953 * Compute the number of virtual columns. | |
| 954 */ | |
| 955 #ifdef FEAT_FOLDING | |
| 956 if (curwin->w_cline_folded) | |
| 957 /* In a folded line the cursor is always in the first column */ | |
| 958 startcol = curwin->w_virtcol = endcol = curwin->w_leftcol; | |
| 959 else | |
| 960 #endif | |
| 961 getvvcol(curwin, &curwin->w_cursor, | |
| 962 &startcol, &(curwin->w_virtcol), &endcol); | |
| 963 | |
| 964 /* remove '$' from change command when cursor moves onto it */ | |
| 965 if (startcol > dollar_vcol) | |
| 3318 | 966 dollar_vcol = -1; |
| 7 | 967 |
| 968 extra = curwin_col_off(); | |
| 969 curwin->w_wcol = curwin->w_virtcol + extra; | |
| 970 endcol += extra; | |
| 971 | |
| 972 /* | |
| 973 * Now compute w_wrow, counting screen lines from w_cline_row. | |
| 974 */ | |
| 975 curwin->w_wrow = curwin->w_cline_row; | |
| 976 | |
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977 textwidth = curwin->w_width - extra; |
| 7 | 978 if (textwidth <= 0) |
| 979 { | |
| 980 /* No room for text, put cursor in last char of window. */ | |
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981 curwin->w_wcol = curwin->w_width - 1; |
| 7 | 982 curwin->w_wrow = curwin->w_height - 1; |
| 983 } | |
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984 else if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 985 { |
| 986 width = textwidth + curwin_col_off2(); | |
| 987 | |
| 988 /* long line wrapping, adjust curwin->w_wrow */ | |
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989 if (curwin->w_wcol >= curwin->w_width) |
| 7 | 990 { |
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991 #ifdef FEAT_LINEBREAK |
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992 char_u *sbr; |
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993 #endif |
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994 |
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995 /* this same formula is used in validate_cursor_col() */ |
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996 n = (curwin->w_wcol - curwin->w_width) / width + 1; |
| 7 | 997 curwin->w_wcol -= n * width; |
| 998 curwin->w_wrow += n; | |
| 999 | |
| 1000 #ifdef FEAT_LINEBREAK | |
| 1001 /* When cursor wraps to first char of next line in Insert | |
| 1002 * mode, the 'showbreak' string isn't shown, backup to first | |
| 1003 * column */ | |
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1004 sbr = get_showbreak_value(curwin); |
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1005 if (*sbr && *ml_get_cursor() == NUL |
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1006 && curwin->w_wcol == (int)vim_strsize(sbr)) |
| 7 | 1007 curwin->w_wcol = 0; |
| 1008 #endif | |
| 1009 } | |
| 1010 } | |
| 1011 | |
| 1012 /* No line wrapping: compute curwin->w_leftcol if scrolling is on and line | |
| 1013 * is not folded. | |
| 1014 * If scrolling is off, curwin->w_leftcol is assumed to be 0 */ | |
| 3263 | 1015 else if (may_scroll |
| 7 | 1016 #ifdef FEAT_FOLDING |
| 1017 && !curwin->w_cline_folded | |
| 1018 #endif | |
| 1019 ) | |
| 1020 { | |
| 1021 /* | |
| 1022 * If Cursor is left of the screen, scroll rightwards. | |
| 1023 * If Cursor is right of the screen, scroll leftwards | |
| 1024 * If we get closer to the edge than 'sidescrolloff', scroll a little | |
| 1025 * extra | |
| 1026 */ | |
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1027 off_left = (int)startcol - (int)curwin->w_leftcol - siso; |
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1028 off_right = (int)endcol - (int)(curwin->w_leftcol + curwin->w_width |
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1029 - siso) + 1; |
| 7 | 1030 if (off_left < 0 || off_right > 0) |
| 1031 { | |
| 1032 if (off_left < 0) | |
| 1033 diff = -off_left; | |
| 1034 else | |
| 1035 diff = off_right; | |
| 1036 | |
| 1037 /* When far off or not enough room on either side, put cursor in | |
| 1038 * middle of window. */ | |
| 1039 if (p_ss == 0 || diff >= textwidth / 2 || off_right >= off_left) | |
| 1040 new_leftcol = curwin->w_wcol - extra - textwidth / 2; | |
| 1041 else | |
| 1042 { | |
| 1043 if (diff < p_ss) | |
| 1044 diff = p_ss; | |
| 1045 if (off_left < 0) | |
| 1046 new_leftcol = curwin->w_leftcol - diff; | |
| 1047 else | |
| 1048 new_leftcol = curwin->w_leftcol + diff; | |
| 1049 } | |
| 1050 if (new_leftcol < 0) | |
| 1051 new_leftcol = 0; | |
| 1052 if (new_leftcol != (int)curwin->w_leftcol) | |
| 1053 { | |
| 1054 curwin->w_leftcol = new_leftcol; | |
| 1055 /* screen has to be redrawn with new curwin->w_leftcol */ | |
| 1056 redraw_later(NOT_VALID); | |
| 1057 } | |
| 1058 } | |
| 1059 curwin->w_wcol -= curwin->w_leftcol; | |
| 1060 } | |
| 1061 else if (curwin->w_wcol > (int)curwin->w_leftcol) | |
| 1062 curwin->w_wcol -= curwin->w_leftcol; | |
| 1063 else | |
| 1064 curwin->w_wcol = 0; | |
| 1065 | |
| 1066 #ifdef FEAT_DIFF | |
| 1067 /* Skip over filler lines. At the top use w_topfill, there | |
| 1068 * may be some filler lines above the window. */ | |
| 1069 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 1070 curwin->w_wrow += curwin->w_topfill; | |
| 1071 else | |
| 1072 curwin->w_wrow += diff_check_fill(curwin, curwin->w_cursor.lnum); | |
| 1073 #endif | |
| 1074 | |
| 1075 prev_skipcol = curwin->w_skipcol; | |
| 1076 | |
| 1077 p_lines = 0; | |
|
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|
1078 |
| 7 | 1079 if ((curwin->w_wrow >= curwin->w_height |
| 1080 || ((prev_skipcol > 0 | |
|
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|
1081 || curwin->w_wrow + so >= curwin->w_height) |
| 7 | 1082 && (p_lines = |
| 1083 #ifdef FEAT_DIFF | |
| 1084 plines_win_nofill | |
| 1085 #else | |
| 1086 plines_win | |
| 1087 #endif | |
| 1088 (curwin, curwin->w_cursor.lnum, FALSE)) | |
| 1089 - 1 >= curwin->w_height)) | |
| 1090 && curwin->w_height != 0 | |
| 1091 && curwin->w_cursor.lnum == curwin->w_topline | |
| 1092 && width > 0 | |
|
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Christian Brabandt <cb@256bit.org>
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|
1093 && curwin->w_width != 0) |
| 7 | 1094 { |
| 1095 /* Cursor past end of screen. Happens with a single line that does | |
| 1096 * not fit on screen. Find a skipcol to show the text around the | |
| 1097 * cursor. Avoid scrolling all the time. compute value of "extra": | |
|
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|
1098 * 1: Less than 'scrolloff' lines above |
|
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|
1099 * 2: Less than 'scrolloff' lines below |
| 7 | 1100 * 3: both of them */ |
| 1101 extra = 0; | |
|
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|
1102 if (curwin->w_skipcol + so * width > curwin->w_virtcol) |
| 7 | 1103 extra = 1; |
| 1104 /* Compute last display line of the buffer line that we want at the | |
| 1105 * bottom of the window. */ | |
| 1106 if (p_lines == 0) | |
| 1107 p_lines = plines_win(curwin, curwin->w_cursor.lnum, FALSE); | |
| 1108 --p_lines; | |
|
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|
1109 if (p_lines > curwin->w_wrow + so) |
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|
1110 n = curwin->w_wrow + so; |
| 7 | 1111 else |
| 1112 n = p_lines; | |
| 1113 if ((colnr_T)n >= curwin->w_height + curwin->w_skipcol / width) | |
| 1114 extra += 2; | |
| 1115 | |
|
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|
1116 if (extra == 3 || p_lines < so * 2) |
| 7 | 1117 { |
| 1118 /* not enough room for 'scrolloff', put cursor in the middle */ | |
| 1119 n = curwin->w_virtcol / width; | |
| 1120 if (n > curwin->w_height / 2) | |
| 1121 n -= curwin->w_height / 2; | |
| 1122 else | |
| 1123 n = 0; | |
| 1124 /* don't skip more than necessary */ | |
| 1125 if (n > p_lines - curwin->w_height + 1) | |
| 1126 n = p_lines - curwin->w_height + 1; | |
| 1127 curwin->w_skipcol = n * width; | |
| 1128 } | |
| 1129 else if (extra == 1) | |
| 1130 { | |
| 1131 /* less then 'scrolloff' lines above, decrease skipcol */ | |
|
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|
1132 extra = (curwin->w_skipcol + so * width - curwin->w_virtcol |
| 7 | 1133 + width - 1) / width; |
| 1134 if (extra > 0) | |
| 1135 { | |
| 1136 if ((colnr_T)(extra * width) > curwin->w_skipcol) | |
| 1137 extra = curwin->w_skipcol / width; | |
| 1138 curwin->w_skipcol -= extra * width; | |
| 1139 } | |
| 1140 } | |
| 1141 else if (extra == 2) | |
| 1142 { | |
| 1143 /* less then 'scrolloff' lines below, increase skipcol */ | |
| 1144 endcol = (n - curwin->w_height + 1) * width; | |
| 1145 while (endcol > curwin->w_virtcol) | |
| 1146 endcol -= width; | |
| 1147 if (endcol > curwin->w_skipcol) | |
| 1148 curwin->w_skipcol = endcol; | |
| 1149 } | |
| 1150 | |
| 1151 curwin->w_wrow -= curwin->w_skipcol / width; | |
| 1152 if (curwin->w_wrow >= curwin->w_height) | |
| 1153 { | |
| 1154 /* small window, make sure cursor is in it */ | |
| 1155 extra = curwin->w_wrow - curwin->w_height + 1; | |
| 1156 curwin->w_skipcol += extra * width; | |
| 1157 curwin->w_wrow -= extra; | |
| 1158 } | |
| 1159 | |
| 1160 extra = ((int)prev_skipcol - (int)curwin->w_skipcol) / width; | |
| 1161 if (extra > 0) | |
| 1162 win_ins_lines(curwin, 0, extra, FALSE, FALSE); | |
| 1163 else if (extra < 0) | |
|
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|
1164 win_del_lines(curwin, 0, -extra, FALSE, FALSE, 0); |
| 7 | 1165 } |
| 1166 else | |
| 1167 curwin->w_skipcol = 0; | |
| 1168 if (prev_skipcol != curwin->w_skipcol) | |
| 1169 redraw_later(NOT_VALID); | |
| 1170 | |
| 740 | 1171 #ifdef FEAT_SYN_HL |
| 5749 | 1172 /* Redraw when w_virtcol changes and 'cursorcolumn' is set */ |
| 1173 if (curwin->w_p_cuc && (curwin->w_valid & VALID_VIRTCOL) == 0 | |
|
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|
1174 && !pum_visible()) |
| 5749 | 1175 redraw_later(SOME_VALID); |
|
2178
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|
1176 #endif |
| 740 | 1177 |
|
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|
1178 // now w_leftcol is valid, avoid check_cursor_moved() thinking otherwise |
|
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|
1179 curwin->w_valid_leftcol = curwin->w_leftcol; |
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|
1180 |
| 7 | 1181 curwin->w_valid |= VALID_WCOL|VALID_WROW|VALID_VIRTCOL; |
| 1182 } | |
| 1183 | |
|
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|
1184 #if (defined(FEAT_EVAL) || defined(FEAT_PROP_POPUP)) || defined(PROTO) |
|
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1185 /* |
|
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1186 * Compute the screen position of text character at "pos" in window "wp" |
|
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1187 * The resulting values are one-based, zero when character is not visible. |
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1188 */ |
|
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|
1189 void |
|
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|
1190 textpos2screenpos( |
|
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|
1191 win_T *wp, |
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1192 pos_T *pos, |
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1193 int *rowp, // screen row |
|
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|
1194 int *scolp, // start screen column |
|
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|
1195 int *ccolp, // cursor screen column |
|
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|
1196 int *ecolp) // end screen column |
|
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1197 { |
|
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1198 colnr_T scol = 0, ccol = 0, ecol = 0; |
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|
1199 int row = 0; |
|
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|
1200 int rowoff = 0; |
|
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|
1201 colnr_T coloff = 0; |
|
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|
1202 |
|
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|
1203 if (pos->lnum >= wp->w_topline && pos->lnum < wp->w_botline) |
|
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1204 { |
|
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|
1205 colnr_T off; |
|
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|
1206 colnr_T col; |
|
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|
1207 int width; |
|
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1208 |
|
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|
1209 row = plines_m_win(wp, wp->w_topline, pos->lnum - 1) + 1; |
|
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|
1210 getvcol(wp, pos, &scol, &ccol, &ecol); |
|
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|
1211 |
|
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|
1212 // similar to what is done in validate_cursor_col() |
|
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|
1213 col = scol; |
|
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1214 off = win_col_off(wp); |
|
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1215 col += off; |
|
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|
1216 width = wp->w_width - off + win_col_off2(wp); |
|
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1217 |
|
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|
1218 // long line wrapping, adjust row |
|
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|
1219 if (wp->w_p_wrap |
|
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|
1220 && col >= (colnr_T)wp->w_width |
|
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1221 && width > 0) |
|
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|
1222 { |
|
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|
1223 // use same formula as what is used in curs_columns() |
|
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|
1224 rowoff = ((col - wp->w_width) / width + 1); |
|
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|
1225 col -= rowoff * width; |
|
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|
1226 } |
|
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|
1227 col -= wp->w_leftcol; |
|
18469
66964658cc3c
patch 8.1.2228: screenpos() returns wrong values when 'number' is set
Bram Moolenaar <Bram@vim.org>
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|
1228 if (col >= wp->w_width) |
|
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|
1229 col = -1; |
|
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|
1230 if (col >= 0) |
|
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1231 coloff = col - scol + wp->w_wincol + 1; |
|
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1232 else |
|
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1233 // character is left or right of the window |
|
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|
1234 row = scol = ccol = ecol = 0; |
|
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1235 } |
|
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1236 *rowp = wp->w_winrow + row + rowoff; |
|
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1237 *scolp = scol + coloff; |
|
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1238 *ccolp = ccol + coloff; |
|
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|
1239 *ecolp = ecol + coloff; |
|
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1240 } |
|
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|
1241 #endif |
|
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1242 |
|
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|
1243 #if defined(FEAT_EVAL) || defined(PROTO) |
|
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1244 /* |
|
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|
1245 * "screenpos({winid}, {lnum}, {col})" function |
|
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|
1246 */ |
|
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|
1247 void |
|
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1248 f_screenpos(typval_T *argvars UNUSED, typval_T *rettv) |
|
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1249 { |
|
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1250 dict_T *dict; |
|
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1251 win_T *wp; |
|
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1252 pos_T pos; |
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1253 int row = 0; |
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1254 int scol = 0, ccol = 0, ecol = 0; |
|
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1255 |
|
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1256 if (rettv_dict_alloc(rettv) != OK) |
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1257 return; |
|
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1258 dict = rettv->vval.v_dict; |
|
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1259 |
|
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1260 wp = find_win_by_nr_or_id(&argvars[0]); |
|
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1261 if (wp == NULL) |
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1262 return; |
|
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1263 |
|
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1264 pos.lnum = tv_get_number(&argvars[1]); |
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1265 pos.col = tv_get_number(&argvars[2]) - 1; |
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|
1266 pos.coladd = 0; |
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1267 textpos2screenpos(wp, &pos, &row, &scol, &ccol, &ecol); |
|
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1268 |
|
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1269 dict_add_number(dict, "row", row); |
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1270 dict_add_number(dict, "col", scol); |
|
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1271 dict_add_number(dict, "curscol", ccol); |
|
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1272 dict_add_number(dict, "endcol", ecol); |
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1273 } |
|
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1274 #endif |
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1275 |
| 7 | 1276 /* |
| 1277 * Scroll the current window down by "line_count" logical lines. "CTRL-Y" | |
| 1278 */ | |
| 1279 void | |
|
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1280 scrolldown( |
|
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1281 long line_count, |
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1282 int byfold UNUSED) /* TRUE: count a closed fold as one line */ |
| 7 | 1283 { |
| 1284 long done = 0; /* total # of physical lines done */ | |
| 1285 int wrow; | |
| 1286 int moved = FALSE; | |
| 1287 | |
| 1288 #ifdef FEAT_FOLDING | |
| 1289 linenr_T first; | |
| 1290 | |
| 1291 /* Make sure w_topline is at the first of a sequence of folded lines. */ | |
| 1292 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 1293 #endif | |
| 1294 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1295 while (line_count-- > 0) | |
| 1296 { | |
| 1297 #ifdef FEAT_DIFF | |
| 1980 | 1298 if (curwin->w_topfill < diff_check(curwin, curwin->w_topline) |
| 1299 && curwin->w_topfill < curwin->w_height - 1) | |
| 7 | 1300 { |
| 1301 ++curwin->w_topfill; | |
| 1302 ++done; | |
| 1303 } | |
| 1304 else | |
| 1305 #endif | |
| 1306 { | |
| 1307 if (curwin->w_topline == 1) | |
| 1308 break; | |
| 1309 --curwin->w_topline; | |
| 1310 #ifdef FEAT_DIFF | |
| 1311 curwin->w_topfill = 0; | |
| 1312 #endif | |
| 1313 #ifdef FEAT_FOLDING | |
| 1314 /* A sequence of folded lines only counts for one logical line */ | |
| 1315 if (hasFolding(curwin->w_topline, &first, NULL)) | |
| 1316 { | |
| 1317 ++done; | |
| 1318 if (!byfold) | |
| 1319 line_count -= curwin->w_topline - first - 1; | |
| 1320 curwin->w_botline -= curwin->w_topline - first; | |
| 1321 curwin->w_topline = first; | |
| 1322 } | |
| 1323 else | |
| 1324 #endif | |
|
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1325 done += PLINES_NOFILL(curwin->w_topline); |
| 7 | 1326 } |
| 1327 --curwin->w_botline; /* approximate w_botline */ | |
| 1328 invalidate_botline(); | |
| 1329 } | |
| 1330 curwin->w_wrow += done; /* keep w_wrow updated */ | |
| 1331 curwin->w_cline_row += done; /* keep w_cline_row updated */ | |
| 1332 | |
| 1333 #ifdef FEAT_DIFF | |
| 1334 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 1335 curwin->w_cline_row = 0; | |
| 1336 check_topfill(curwin, TRUE); | |
| 1337 #endif | |
| 1338 | |
| 1339 /* | |
| 1340 * Compute the row number of the last row of the cursor line | |
| 1341 * and move the cursor onto the displayed part of the window. | |
| 1342 */ | |
| 1343 wrow = curwin->w_wrow; | |
|
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1344 if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 1345 { |
| 1346 validate_virtcol(); | |
| 1347 validate_cheight(); | |
| 1348 wrow += curwin->w_cline_height - 1 - | |
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1349 curwin->w_virtcol / curwin->w_width; |
| 7 | 1350 } |
| 1351 while (wrow >= curwin->w_height && curwin->w_cursor.lnum > 1) | |
| 1352 { | |
| 1353 #ifdef FEAT_FOLDING | |
| 1354 if (hasFolding(curwin->w_cursor.lnum, &first, NULL)) | |
| 1355 { | |
| 1356 --wrow; | |
| 1357 if (first == 1) | |
| 1358 curwin->w_cursor.lnum = 1; | |
| 1359 else | |
| 1360 curwin->w_cursor.lnum = first - 1; | |
| 1361 } | |
| 1362 else | |
| 1363 #endif | |
| 1364 wrow -= plines(curwin->w_cursor.lnum--); | |
| 1365 curwin->w_valid &= | |
| 1366 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
| 1367 moved = TRUE; | |
| 1368 } | |
| 1369 if (moved) | |
| 1370 { | |
| 1371 #ifdef FEAT_FOLDING | |
| 1372 /* Move cursor to first line of closed fold. */ | |
| 1373 foldAdjustCursor(); | |
| 1374 #endif | |
| 1375 coladvance(curwin->w_curswant); | |
| 1376 } | |
| 1377 } | |
| 1378 | |
| 1379 /* | |
| 1380 * Scroll the current window up by "line_count" logical lines. "CTRL-E" | |
| 1381 */ | |
| 1382 void | |
|
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1383 scrollup( |
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1384 long line_count, |
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|
1385 int byfold UNUSED) /* TRUE: count a closed fold as one line */ |
| 7 | 1386 { |
| 1387 #if defined(FEAT_FOLDING) || defined(FEAT_DIFF) | |
| 1388 linenr_T lnum; | |
| 1389 | |
| 1390 if ( | |
| 1391 # ifdef FEAT_FOLDING | |
| 1392 (byfold && hasAnyFolding(curwin)) | |
| 1393 # ifdef FEAT_DIFF | |
| 1394 || | |
| 1395 # endif | |
| 1396 # endif | |
| 1397 # ifdef FEAT_DIFF | |
| 1398 curwin->w_p_diff | |
| 1399 # endif | |
| 1400 ) | |
| 1401 { | |
| 1402 /* count each sequence of folded lines as one logical line */ | |
| 1403 lnum = curwin->w_topline; | |
| 1404 while (line_count--) | |
| 1405 { | |
| 1406 # ifdef FEAT_DIFF | |
| 1407 if (curwin->w_topfill > 0) | |
| 1408 --curwin->w_topfill; | |
| 1409 else | |
| 1410 # endif | |
| 1411 { | |
| 1412 # ifdef FEAT_FOLDING | |
| 1413 if (byfold) | |
| 1414 (void)hasFolding(lnum, NULL, &lnum); | |
| 1415 # endif | |
| 1416 if (lnum >= curbuf->b_ml.ml_line_count) | |
| 1417 break; | |
| 1418 ++lnum; | |
| 1419 # ifdef FEAT_DIFF | |
| 1420 curwin->w_topfill = diff_check_fill(curwin, lnum); | |
| 1421 # endif | |
| 1422 } | |
| 1423 } | |
| 1424 /* approximate w_botline */ | |
| 1425 curwin->w_botline += lnum - curwin->w_topline; | |
| 1426 curwin->w_topline = lnum; | |
| 1427 } | |
| 1428 else | |
| 1429 #endif | |
| 1430 { | |
| 1431 curwin->w_topline += line_count; | |
| 1432 curwin->w_botline += line_count; /* approximate w_botline */ | |
| 1433 } | |
| 1434 | |
| 1435 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
| 1436 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
| 1437 if (curwin->w_botline > curbuf->b_ml.ml_line_count + 1) | |
| 1438 curwin->w_botline = curbuf->b_ml.ml_line_count + 1; | |
| 1439 | |
| 1440 #ifdef FEAT_DIFF | |
| 1441 check_topfill(curwin, FALSE); | |
| 1442 #endif | |
| 1443 | |
| 1444 #ifdef FEAT_FOLDING | |
| 1445 if (hasAnyFolding(curwin)) | |
| 1446 /* Make sure w_topline is at the first of a sequence of folded lines. */ | |
| 1447 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 1448 #endif | |
| 1449 | |
| 1450 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1451 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 1452 { | |
| 1453 curwin->w_cursor.lnum = curwin->w_topline; | |
| 1454 curwin->w_valid &= | |
| 1455 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
| 1456 coladvance(curwin->w_curswant); | |
| 1457 } | |
| 1458 } | |
| 1459 | |
| 1460 #ifdef FEAT_DIFF | |
| 1461 /* | |
| 1462 * Don't end up with too many filler lines in the window. | |
| 1463 */ | |
| 1464 void | |
|
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1465 check_topfill( |
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|
1466 win_T *wp, |
|
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|
1467 int down) /* when TRUE scroll down when not enough space */ |
| 7 | 1468 { |
| 1469 int n; | |
| 1470 | |
| 1471 if (wp->w_topfill > 0) | |
| 1472 { | |
| 1473 n = plines_win_nofill(wp, wp->w_topline, TRUE); | |
| 1474 if (wp->w_topfill + n > wp->w_height) | |
| 1475 { | |
| 1476 if (down && wp->w_topline > 1) | |
| 1477 { | |
| 1478 --wp->w_topline; | |
| 1479 wp->w_topfill = 0; | |
| 1480 } | |
| 1481 else | |
| 1482 { | |
| 1483 wp->w_topfill = wp->w_height - n; | |
| 1484 if (wp->w_topfill < 0) | |
| 1485 wp->w_topfill = 0; | |
| 1486 } | |
| 1487 } | |
| 1488 } | |
| 1489 } | |
| 1490 | |
| 1491 /* | |
| 1492 * Use as many filler lines as possible for w_topline. Make sure w_topline | |
| 1493 * is still visible. | |
| 1494 */ | |
| 1495 static void | |
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|
1496 max_topfill(void) |
| 7 | 1497 { |
| 1498 int n; | |
| 1499 | |
| 1500 n = plines_nofill(curwin->w_topline); | |
| 1501 if (n >= curwin->w_height) | |
| 1502 curwin->w_topfill = 0; | |
| 1503 else | |
| 1504 { | |
| 1505 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 1506 if (curwin->w_topfill + n > curwin->w_height) | |
| 1507 curwin->w_topfill = curwin->w_height - n; | |
| 1508 } | |
| 1509 } | |
| 1510 #endif | |
| 1511 | |
| 1512 /* | |
| 1513 * Scroll the screen one line down, but don't do it if it would move the | |
| 1514 * cursor off the screen. | |
| 1515 */ | |
| 1516 void | |
|
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|
1517 scrolldown_clamp(void) |
| 7 | 1518 { |
| 1519 int end_row; | |
| 1520 #ifdef FEAT_DIFF | |
| 1521 int can_fill = (curwin->w_topfill | |
| 1522 < diff_check_fill(curwin, curwin->w_topline)); | |
| 1523 #endif | |
| 1524 | |
| 1525 if (curwin->w_topline <= 1 | |
| 1526 #ifdef FEAT_DIFF | |
| 1527 && !can_fill | |
| 1528 #endif | |
| 1529 ) | |
| 1530 return; | |
| 1531 | |
| 1532 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1533 | |
| 1534 /* | |
| 1535 * Compute the row number of the last row of the cursor line | |
| 1536 * and make sure it doesn't go off the screen. Make sure the cursor | |
| 1537 * doesn't go past 'scrolloff' lines from the screen end. | |
| 1538 */ | |
| 1539 end_row = curwin->w_wrow; | |
| 1540 #ifdef FEAT_DIFF | |
| 1541 if (can_fill) | |
| 1542 ++end_row; | |
| 1543 else | |
| 1544 end_row += plines_nofill(curwin->w_topline - 1); | |
| 1545 #else | |
| 1546 end_row += plines(curwin->w_topline - 1); | |
| 1547 #endif | |
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1548 if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 1549 { |
| 1550 validate_cheight(); | |
| 1551 validate_virtcol(); | |
| 1552 end_row += curwin->w_cline_height - 1 - | |
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1553 curwin->w_virtcol / curwin->w_width; |
| 7 | 1554 } |
|
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1555 if (end_row < curwin->w_height - get_scrolloff_value()) |
| 7 | 1556 { |
| 1557 #ifdef FEAT_DIFF | |
| 1558 if (can_fill) | |
| 1559 { | |
| 1560 ++curwin->w_topfill; | |
| 1561 check_topfill(curwin, TRUE); | |
| 1562 } | |
| 1563 else | |
| 1564 { | |
| 1565 --curwin->w_topline; | |
| 1566 curwin->w_topfill = 0; | |
| 1567 } | |
| 1568 #else | |
| 1569 --curwin->w_topline; | |
| 1570 #endif | |
| 1571 #ifdef FEAT_FOLDING | |
| 7009 | 1572 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
| 7 | 1573 #endif |
| 1574 --curwin->w_botline; /* approximate w_botline */ | |
| 1575 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1576 } | |
| 1577 } | |
| 1578 | |
| 1579 /* | |
| 1580 * Scroll the screen one line up, but don't do it if it would move the cursor | |
| 1581 * off the screen. | |
| 1582 */ | |
| 1583 void | |
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1584 scrollup_clamp(void) |
| 7 | 1585 { |
| 1586 int start_row; | |
| 1587 | |
| 1588 if (curwin->w_topline == curbuf->b_ml.ml_line_count | |
| 1589 #ifdef FEAT_DIFF | |
| 1590 && curwin->w_topfill == 0 | |
| 1591 #endif | |
| 1592 ) | |
| 1593 return; | |
| 1594 | |
| 1595 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1596 | |
| 1597 /* | |
| 1598 * Compute the row number of the first row of the cursor line | |
| 1599 * and make sure it doesn't go off the screen. Make sure the cursor | |
| 1600 * doesn't go before 'scrolloff' lines from the screen start. | |
| 1601 */ | |
| 1602 #ifdef FEAT_DIFF | |
| 1603 start_row = curwin->w_wrow - plines_nofill(curwin->w_topline) | |
| 1604 - curwin->w_topfill; | |
| 1605 #else | |
| 1606 start_row = curwin->w_wrow - plines(curwin->w_topline); | |
| 1607 #endif | |
|
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1608 if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 1609 { |
| 1610 validate_virtcol(); | |
|
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1611 start_row -= curwin->w_virtcol / curwin->w_width; |
| 7 | 1612 } |
|
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changeset
|
1613 if (start_row >= get_scrolloff_value()) |
| 7 | 1614 { |
| 1615 #ifdef FEAT_DIFF | |
| 1616 if (curwin->w_topfill > 0) | |
| 1617 --curwin->w_topfill; | |
| 1618 else | |
| 1619 #endif | |
| 36 | 1620 { |
| 1621 #ifdef FEAT_FOLDING | |
| 1622 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
| 1623 #endif | |
| 7 | 1624 ++curwin->w_topline; |
| 36 | 1625 } |
| 7 | 1626 ++curwin->w_botline; /* approximate w_botline */ |
| 1627 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1628 } | |
| 1629 } | |
| 1630 | |
| 1631 /* | |
| 1632 * Add one line above "lp->lnum". This can be a filler line, a closed fold or | |
| 1633 * a (wrapped) text line. Uses and sets "lp->fill". | |
| 1634 * Returns the height of the added line in "lp->height". | |
|
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1635 * Lines above the first one are incredibly high: MAXCOL. |
| 7 | 1636 */ |
| 1637 static void | |
|
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|
1638 topline_back(lineoff_T *lp) |
| 7 | 1639 { |
| 1640 #ifdef FEAT_DIFF | |
| 1641 if (lp->fill < diff_check_fill(curwin, lp->lnum)) | |
| 1642 { | |
| 1643 /* Add a filler line. */ | |
| 1644 ++lp->fill; | |
| 1645 lp->height = 1; | |
| 1646 } | |
| 1647 else | |
| 1648 #endif | |
| 1649 { | |
| 1650 --lp->lnum; | |
| 1651 #ifdef FEAT_DIFF | |
| 1652 lp->fill = 0; | |
| 1653 #endif | |
| 1654 if (lp->lnum < 1) | |
| 1655 lp->height = MAXCOL; | |
| 1656 else | |
| 1657 #ifdef FEAT_FOLDING | |
| 1658 if (hasFolding(lp->lnum, &lp->lnum, NULL)) | |
| 1659 /* Add a closed fold */ | |
| 1660 lp->height = 1; | |
| 1661 else | |
| 1662 #endif | |
|
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|
1663 lp->height = PLINES_NOFILL(lp->lnum); |
| 7 | 1664 } |
| 1665 } | |
| 1666 | |
| 1667 /* | |
| 1668 * Add one line below "lp->lnum". This can be a filler line, a closed fold or | |
| 1669 * a (wrapped) text line. Uses and sets "lp->fill". | |
| 1670 * Returns the height of the added line in "lp->height". | |
| 1671 * Lines below the last one are incredibly high. | |
| 1672 */ | |
| 1673 static void | |
|
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1674 botline_forw(lineoff_T *lp) |
| 7 | 1675 { |
| 1676 #ifdef FEAT_DIFF | |
| 1677 if (lp->fill < diff_check_fill(curwin, lp->lnum + 1)) | |
| 1678 { | |
| 1679 /* Add a filler line. */ | |
| 1680 ++lp->fill; | |
| 1681 lp->height = 1; | |
| 1682 } | |
| 1683 else | |
| 1684 #endif | |
| 1685 { | |
| 1686 ++lp->lnum; | |
| 1687 #ifdef FEAT_DIFF | |
| 1688 lp->fill = 0; | |
| 1689 #endif | |
| 1690 if (lp->lnum > curbuf->b_ml.ml_line_count) | |
| 1691 lp->height = MAXCOL; | |
| 1692 else | |
| 1693 #ifdef FEAT_FOLDING | |
| 1694 if (hasFolding(lp->lnum, NULL, &lp->lnum)) | |
| 1695 /* Add a closed fold */ | |
| 1696 lp->height = 1; | |
| 1697 else | |
| 1698 #endif | |
|
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|
1699 lp->height = PLINES_NOFILL(lp->lnum); |
| 7 | 1700 } |
| 1701 } | |
| 1702 | |
| 1703 #ifdef FEAT_DIFF | |
| 1704 /* | |
| 1705 * Switch from including filler lines below lp->lnum to including filler | |
| 1706 * lines above loff.lnum + 1. This keeps pointing to the same line. | |
| 1707 * When there are no filler lines nothing changes. | |
| 1708 */ | |
| 1709 static void | |
|
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1710 botline_topline(lineoff_T *lp) |
| 7 | 1711 { |
| 1712 if (lp->fill > 0) | |
| 1713 { | |
| 1714 ++lp->lnum; | |
| 1715 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
| 1716 } | |
| 1717 } | |
| 1718 | |
| 1719 /* | |
| 1720 * Switch from including filler lines above lp->lnum to including filler | |
| 1721 * lines below loff.lnum - 1. This keeps pointing to the same line. | |
| 1722 * When there are no filler lines nothing changes. | |
| 1723 */ | |
| 1724 static void | |
|
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|
1725 topline_botline(lineoff_T *lp) |
| 7 | 1726 { |
| 1727 if (lp->fill > 0) | |
| 1728 { | |
| 1729 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
| 1730 --lp->lnum; | |
| 1731 } | |
| 1732 } | |
| 1733 #endif | |
| 1734 | |
| 1735 /* | |
| 1736 * Recompute topline to put the cursor at the top of the window. | |
| 1737 * Scroll at least "min_scroll" lines. | |
| 1738 * If "always" is TRUE, always set topline (for "zt"). | |
| 1739 */ | |
| 1740 void | |
|
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1741 scroll_cursor_top(int min_scroll, int always) |
| 7 | 1742 { |
| 1743 int scrolled = 0; | |
| 1744 int extra = 0; | |
| 1745 int used; | |
| 1746 int i; | |
| 1747 linenr_T top; /* just above displayed lines */ | |
| 1748 linenr_T bot; /* just below displayed lines */ | |
| 1749 linenr_T old_topline = curwin->w_topline; | |
| 1750 #ifdef FEAT_DIFF | |
| 1751 linenr_T old_topfill = curwin->w_topfill; | |
| 1752 #endif | |
| 1753 linenr_T new_topline; | |
|
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1754 int off = get_scrolloff_value(); |
| 7 | 1755 |
| 1756 if (mouse_dragging > 0) | |
| 1757 off = mouse_dragging - 1; | |
| 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) | |
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2007 && extra >= (mouse_dragging > 0 ? mouse_dragging - 1 : so)) |
| 7 | 2008 || boff.lnum + 1 > curbuf->b_ml.ml_line_count) |
| 2009 && loff.lnum <= curwin->w_botline | |
| 2010 #ifdef FEAT_DIFF | |
| 2011 && (loff.lnum < curwin->w_botline | |
| 2012 || loff.fill >= fill_below_window) | |
| 2013 #endif | |
| 2014 ) | |
| 2015 break; | |
| 2016 | |
| 2017 /* Add one line above */ | |
| 2018 topline_back(&loff); | |
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2019 if (loff.height == MAXCOL) |
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2020 used = MAXCOL; |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2021 else |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2022 used += loff.height; |
| 7 | 2023 if (used > curwin->w_height) |
| 2024 break; | |
| 2025 if (loff.lnum >= curwin->w_botline | |
| 2026 #ifdef FEAT_DIFF | |
| 2027 && (loff.lnum > curwin->w_botline | |
| 2028 || loff.fill <= fill_below_window) | |
| 2029 #endif | |
| 2030 ) | |
| 2031 { | |
| 2032 /* Count screen lines that are below the window. */ | |
| 2033 scrolled += loff.height; | |
| 2034 if (loff.lnum == curwin->w_botline | |
| 2035 #ifdef FEAT_DIFF | |
|
15064
7b2dcca9e0c1
patch 8.1.0543: Coverity warns for leaking memory and using wrong struct
Bram Moolenaar <Bram@vim.org>
parents:
14873
diff
changeset
|
2036 && loff.fill == 0 |
| 7 | 2037 #endif |
| 2038 ) | |
| 2039 scrolled -= curwin->w_empty_rows; | |
| 2040 } | |
| 2041 | |
| 2042 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
| 2043 { | |
| 2044 /* Add one line below */ | |
| 2045 botline_forw(&boff); | |
| 2046 used += boff.height; | |
| 2047 if (used > curwin->w_height) | |
| 2048 break; | |
|
18354
9f51d0cef8da
patch 8.1.2171: mouse support not always available
Bram Moolenaar <Bram@vim.org>
parents:
17863
diff
changeset
|
2049 if (extra < ( mouse_dragging > 0 ? mouse_dragging - 1 : so) |
|
9f51d0cef8da
patch 8.1.2171: mouse support not always available
Bram Moolenaar <Bram@vim.org>
parents:
17863
diff
changeset
|
2050 || scrolled < min_scroll) |
| 7 | 2051 { |
| 2052 extra += boff.height; | |
| 2053 if (boff.lnum >= curwin->w_botline | |
| 2054 #ifdef FEAT_DIFF | |
| 2055 || (boff.lnum + 1 == curwin->w_botline | |
| 2056 && boff.fill > curwin->w_filler_rows) | |
| 2057 #endif | |
| 2058 ) | |
| 2059 { | |
| 2060 /* Count screen lines that are below the window. */ | |
| 2061 scrolled += boff.height; | |
| 2062 if (boff.lnum == curwin->w_botline | |
| 2063 #ifdef FEAT_DIFF | |
| 2064 && boff.fill == 0 | |
| 2065 #endif | |
| 2066 ) | |
| 2067 scrolled -= curwin->w_empty_rows; | |
| 2068 } | |
| 2069 } | |
| 2070 } | |
| 2071 } | |
| 2072 | |
| 2073 /* curwin->w_empty_rows is larger, no need to scroll */ | |
| 2074 if (scrolled <= 0) | |
| 2075 line_count = 0; | |
| 2076 /* more than a screenfull, don't scroll but redraw */ | |
| 2077 else if (used > curwin->w_height) | |
| 2078 line_count = used; | |
| 2079 /* scroll minimal number of lines */ | |
| 2080 else | |
| 2081 { | |
| 2082 line_count = 0; | |
| 2083 #ifdef FEAT_DIFF | |
| 2084 boff.fill = curwin->w_topfill; | |
| 2085 #endif | |
| 2086 boff.lnum = curwin->w_topline - 1; | |
| 2087 for (i = 0; i < scrolled && boff.lnum < curwin->w_botline; ) | |
| 2088 { | |
| 2089 botline_forw(&boff); | |
| 2090 i += boff.height; | |
| 2091 ++line_count; | |
| 2092 } | |
| 2093 if (i < scrolled) /* below curwin->w_botline, don't scroll */ | |
| 2094 line_count = 9999; | |
| 2095 } | |
| 2096 | |
| 2097 /* | |
| 2098 * Scroll up if the cursor is off the bottom of the screen a bit. | |
| 2099 * Otherwise put it at 1/2 of the screen. | |
| 2100 */ | |
| 2101 if (line_count >= curwin->w_height && line_count > min_scroll) | |
| 2102 scroll_cursor_halfway(FALSE); | |
| 2103 else | |
| 2104 scrollup(line_count, TRUE); | |
| 2105 | |
| 2106 /* | |
| 2107 * If topline didn't change we need to restore w_botline and w_empty_rows | |
| 2108 * (we changed them). | |
| 2109 * If topline did change, update_screen() will set botline. | |
| 2110 */ | |
| 2111 if (curwin->w_topline == old_topline && set_topbot) | |
| 2112 { | |
| 2113 curwin->w_botline = old_botline; | |
| 2114 curwin->w_empty_rows = old_empty_rows; | |
| 2115 curwin->w_valid = old_valid; | |
| 2116 } | |
| 2117 curwin->w_valid |= VALID_TOPLINE; | |
| 2118 } | |
| 2119 | |
| 2120 /* | |
| 2121 * Recompute topline to put the cursor halfway the window | |
| 2122 * If "atend" is TRUE, also put it halfway at the end of the file. | |
| 2123 */ | |
| 2124 void | |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2125 scroll_cursor_halfway(int atend) |
| 7 | 2126 { |
| 2127 int above = 0; | |
| 2128 linenr_T topline; | |
| 2129 #ifdef FEAT_DIFF | |
| 2130 int topfill = 0; | |
| 2131 #endif | |
| 2132 int below = 0; | |
| 2133 int used; | |
| 2134 lineoff_T loff; | |
| 2135 lineoff_T boff; | |
| 5661 | 2136 #ifdef FEAT_DIFF |
| 5653 | 2137 linenr_T old_topline = curwin->w_topline; |
| 5661 | 2138 #endif |
| 7 | 2139 |
| 2140 loff.lnum = boff.lnum = curwin->w_cursor.lnum; | |
| 2141 #ifdef FEAT_FOLDING | |
| 2142 (void)hasFolding(loff.lnum, &loff.lnum, &boff.lnum); | |
| 2143 #endif | |
| 2144 #ifdef FEAT_DIFF | |
| 2145 used = plines_nofill(loff.lnum); | |
| 2146 loff.fill = 0; | |
| 2147 boff.fill = 0; | |
| 2148 #else | |
| 2149 used = plines(loff.lnum); | |
| 2150 #endif | |
| 2151 topline = loff.lnum; | |
| 2152 while (topline > 1) | |
| 2153 { | |
| 2154 if (below <= above) /* add a line below the cursor first */ | |
| 2155 { | |
| 2156 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
| 2157 { | |
| 2158 botline_forw(&boff); | |
| 2159 used += boff.height; | |
| 2160 if (used > curwin->w_height) | |
| 2161 break; | |
| 2162 below += boff.height; | |
| 2163 } | |
| 2164 else | |
| 2165 { | |
| 2166 ++below; /* count a "~" line */ | |
| 2167 if (atend) | |
| 2168 ++used; | |
| 2169 } | |
| 2170 } | |
| 2171 | |
| 2172 if (below > above) /* add a line above the cursor */ | |
| 2173 { | |
| 2174 topline_back(&loff); | |
|
2082
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2175 if (loff.height == MAXCOL) |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2176 used = MAXCOL; |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2177 else |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2178 used += loff.height; |
| 7 | 2179 if (used > curwin->w_height) |
| 2180 break; | |
| 2181 above += loff.height; | |
| 2182 topline = loff.lnum; | |
| 2183 #ifdef FEAT_DIFF | |
| 2184 topfill = loff.fill; | |
| 2185 #endif | |
| 2186 } | |
| 2187 } | |
| 2188 #ifdef FEAT_FOLDING | |
| 2189 if (!hasFolding(topline, &curwin->w_topline, NULL)) | |
| 2190 #endif | |
| 2191 curwin->w_topline = topline; | |
| 2192 #ifdef FEAT_DIFF | |
| 2193 curwin->w_topfill = topfill; | |
| 5653 | 2194 if (old_topline > curwin->w_topline + curwin->w_height) |
| 2195 curwin->w_botfill = FALSE; | |
| 7 | 2196 check_topfill(curwin, FALSE); |
| 2197 #endif | |
| 2198 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2199 curwin->w_valid |= VALID_TOPLINE; | |
| 2200 } | |
| 2201 | |
| 2202 /* | |
| 2203 * Correct the cursor position so that it is in a part of the screen at least | |
|
15713
ad8b2c109b22
patch 8.1.0864: cannot have a local value for 'scrolloff' and 'sidescrolloff'
Bram Moolenaar <Bram@vim.org>
parents:
15697
diff
changeset
|
2204 * 'scrolloff' lines from the top and bottom, if possible. |
| 7 | 2205 * If not possible, put it at the same position as scroll_cursor_halfway(). |
| 2206 * When called topline must be valid! | |
| 2207 */ | |
| 2208 void | |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2209 cursor_correct(void) |
| 7 | 2210 { |
| 2211 int above = 0; /* screen lines above topline */ | |
| 2212 linenr_T topline; | |
| 2213 int below = 0; /* screen lines below botline */ | |
| 2214 linenr_T botline; | |
| 2215 int above_wanted, below_wanted; | |
| 2216 linenr_T cln; /* Cursor Line Number */ | |
| 2217 int max_off; | |
|
15713
ad8b2c109b22
patch 8.1.0864: cannot have a local value for 'scrolloff' and 'sidescrolloff'
Bram Moolenaar <Bram@vim.org>
parents:
15697
diff
changeset
|
2218 long so = get_scrolloff_value(); |
| 7 | 2219 |
| 2220 /* | |
| 2221 * How many lines we would like to have above/below the cursor depends on | |
| 2222 * whether the first/last line of the file is on screen. | |
| 2223 */ | |
|
15713
ad8b2c109b22
patch 8.1.0864: cannot have a local value for 'scrolloff' and 'sidescrolloff'
Bram Moolenaar <Bram@vim.org>
parents:
15697
diff
changeset
|
2224 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
|
2225 below_wanted = so; |
| 1121 | 2226 if (mouse_dragging > 0) |
| 7 | 2227 { |
| 2228 above_wanted = mouse_dragging - 1; | |
| 2229 below_wanted = mouse_dragging - 1; | |
| 2230 } | |
| 2231 if (curwin->w_topline == 1) | |
| 2232 { | |
| 2233 above_wanted = 0; | |
| 2234 max_off = curwin->w_height / 2; | |
| 2235 if (below_wanted > max_off) | |
| 2236 below_wanted = max_off; | |
| 2237 } | |
| 2238 validate_botline(); | |
| 2239 if (curwin->w_botline == curbuf->b_ml.ml_line_count + 1 | |
|
18354
9f51d0cef8da
patch 8.1.2171: mouse support not always available
Bram Moolenaar <Bram@vim.org>
parents:
17863
diff
changeset
|
2240 && mouse_dragging == 0) |
| 7 | 2241 { |
| 2242 below_wanted = 0; | |
| 2243 max_off = (curwin->w_height - 1) / 2; | |
| 2244 if (above_wanted > max_off) | |
| 2245 above_wanted = max_off; | |
| 2246 } | |
| 2247 | |
| 2248 /* | |
| 2249 * If there are sufficient file-lines above and below the cursor, we can | |
| 2250 * return now. | |
| 2251 */ | |
| 2252 cln = curwin->w_cursor.lnum; | |
| 2253 if (cln >= curwin->w_topline + above_wanted | |
| 2254 && cln < curwin->w_botline - below_wanted | |
| 2255 #ifdef FEAT_FOLDING | |
| 2256 && !hasAnyFolding(curwin) | |
| 2257 #endif | |
| 2258 ) | |
| 2259 return; | |
| 2260 | |
| 2261 /* | |
| 2262 * Narrow down the area where the cursor can be put by taking lines from | |
| 2263 * the top and the bottom until: | |
| 2264 * - the desired context lines are found | |
| 2265 * - the lines from the top is past the lines from the bottom | |
| 2266 */ | |
| 2267 topline = curwin->w_topline; | |
| 2268 botline = curwin->w_botline - 1; | |
| 2269 #ifdef FEAT_DIFF | |
| 2270 /* count filler lines as context */ | |
| 2271 above = curwin->w_topfill; | |
| 2272 below = curwin->w_filler_rows; | |
| 2273 #endif | |
| 2274 while ((above < above_wanted || below < below_wanted) && topline < botline) | |
| 2275 { | |
| 2276 if (below < below_wanted && (below <= above || above >= above_wanted)) | |
| 2277 { | |
| 2278 #ifdef FEAT_FOLDING | |
| 2279 if (hasFolding(botline, &botline, NULL)) | |
| 2280 ++below; | |
| 2281 else | |
| 2282 #endif | |
| 2283 below += plines(botline); | |
| 2284 --botline; | |
| 2285 } | |
| 2286 if (above < above_wanted && (above < below || below >= below_wanted)) | |
| 2287 { | |
| 2288 #ifdef FEAT_FOLDING | |
| 2289 if (hasFolding(topline, NULL, &topline)) | |
| 2290 ++above; | |
| 2291 else | |
| 2292 #endif | |
|
7103
84d318257a45
commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2293 above += PLINES_NOFILL(topline); |
|
84d318257a45
commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2294 #ifdef FEAT_DIFF |
| 7 | 2295 /* Count filler lines below this line as context. */ |
| 2296 if (topline < botline) | |
| 2297 above += diff_check_fill(curwin, topline + 1); | |
| 2298 #endif | |
| 2299 ++topline; | |
| 2300 } | |
| 2301 } | |
| 2302 if (topline == botline || botline == 0) | |
| 2303 curwin->w_cursor.lnum = topline; | |
| 2304 else if (topline > botline) | |
| 2305 curwin->w_cursor.lnum = botline; | |
| 2306 else | |
| 2307 { | |
| 2308 if (cln < topline && curwin->w_topline > 1) | |
| 2309 { | |
| 2310 curwin->w_cursor.lnum = topline; | |
| 2311 curwin->w_valid &= | |
| 2312 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
| 2313 } | |
| 2314 if (cln > botline && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 2315 { | |
| 2316 curwin->w_cursor.lnum = botline; | |
| 2317 curwin->w_valid &= | |
| 2318 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
| 2319 } | |
| 2320 } | |
| 2321 curwin->w_valid |= VALID_TOPLINE; | |
| 2322 } | |
| 2323 | |
|
7803
37c929c4a073
commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
Christian Brabandt <cb@256bit.org>
parents:
7103
diff
changeset
|
2324 static void get_scroll_overlap(lineoff_T *lp, int dir); |
| 7 | 2325 |
| 2326 /* | |
| 2327 * move screen 'count' pages up or down and update screen | |
| 2328 * | |
| 2329 * return FAIL for failure, OK otherwise | |
| 2330 */ | |
| 2331 int | |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2332 onepage(int dir, long count) |
| 7 | 2333 { |
| 2334 long n; | |
| 2335 int retval = OK; | |
| 2336 lineoff_T loff; | |
| 2337 linenr_T old_topline = curwin->w_topline; | |
|
15713
ad8b2c109b22
patch 8.1.0864: cannot have a local value for 'scrolloff' and 'sidescrolloff'
Bram Moolenaar <Bram@vim.org>
parents:
15697
diff
changeset
|
2338 long so = get_scrolloff_value(); |
| 7 | 2339 |
| 2340 if (curbuf->b_ml.ml_line_count == 1) /* nothing to do */ | |
| 2341 { | |
| 2342 beep_flush(); | |
| 2343 return FAIL; | |
| 2344 } | |
| 2345 | |
| 2346 for ( ; count > 0; --count) | |
| 2347 { | |
| 2348 validate_botline(); | |
| 2349 /* | |
| 2350 * It's an error to move a page up when the first line is already on | |
| 2351 * the screen. It's an error to move a page down when the last line | |
| 2352 * is on the screen and the topline is 'scrolloff' lines from the | |
| 2353 * last line. | |
| 2354 */ | |
| 2355 if (dir == FORWARD | |
|
15713
ad8b2c109b22
patch 8.1.0864: cannot have a local value for 'scrolloff' and 'sidescrolloff'
Bram Moolenaar <Bram@vim.org>
parents:
15697
diff
changeset
|
2356 ? ((curwin->w_topline >= curbuf->b_ml.ml_line_count - so) |
| 7 | 2357 && curwin->w_botline > curbuf->b_ml.ml_line_count) |
| 2358 : (curwin->w_topline == 1 | |
| 2359 #ifdef FEAT_DIFF | |
| 2360 && curwin->w_topfill == | |
| 2361 diff_check_fill(curwin, curwin->w_topline) | |
| 2362 #endif | |
| 2363 )) | |
| 2364 { | |
| 2365 beep_flush(); | |
| 2366 retval = FAIL; | |
| 2367 break; | |
| 2368 } | |
| 2369 | |
| 2370 #ifdef FEAT_DIFF | |
| 2371 loff.fill = 0; | |
| 2372 #endif | |
| 2373 if (dir == FORWARD) | |
| 2374 { | |
|
10349
cf988222b150
commit https://github.com/vim/vim/commit/a1f4cb93ba50ea9e40cd4b1f5592b8a6d1398660
Christian Brabandt <cb@256bit.org>
parents:
10295
diff
changeset
|
2375 if (ONE_WINDOW && p_window > 0 && p_window < Rows - 1) |
| 7 | 2376 { |
| 164 | 2377 /* Vi compatible scrolling */ |
| 2378 if (p_window <= 2) | |
| 2379 ++curwin->w_topline; | |
| 2380 else | |
| 2381 curwin->w_topline += p_window - 2; | |
| 2382 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
| 2383 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
| 2384 curwin->w_cursor.lnum = curwin->w_topline; | |
| 2385 } | |
| 2386 else if (curwin->w_botline > curbuf->b_ml.ml_line_count) | |
| 2387 { | |
| 2388 /* at end of file */ | |
| 7 | 2389 curwin->w_topline = curbuf->b_ml.ml_line_count; |
| 2390 #ifdef FEAT_DIFF | |
| 2391 curwin->w_topfill = 0; | |
| 2392 #endif | |
| 2393 curwin->w_valid &= ~(VALID_WROW|VALID_CROW); | |
| 2394 } | |
| 2395 else | |
| 2396 { | |
| 2397 /* For the overlap, start with the line just below the window | |
| 2398 * and go upwards. */ | |
| 2399 loff.lnum = curwin->w_botline; | |
| 2400 #ifdef FEAT_DIFF | |
| 2401 loff.fill = diff_check_fill(curwin, loff.lnum) | |
| 2402 - curwin->w_filler_rows; | |
| 2403 #endif | |
| 2404 get_scroll_overlap(&loff, -1); | |
| 2405 curwin->w_topline = loff.lnum; | |
| 2406 #ifdef FEAT_DIFF | |
| 2407 curwin->w_topfill = loff.fill; | |
| 2408 check_topfill(curwin, FALSE); | |
| 2409 #endif | |
| 2410 curwin->w_cursor.lnum = curwin->w_topline; | |
| 2411 curwin->w_valid &= ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW| | |
| 2412 VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2413 } | |
| 2414 } | |
| 2415 else /* dir == BACKWARDS */ | |
| 2416 { | |
| 2417 #ifdef FEAT_DIFF | |
| 2418 if (curwin->w_topline == 1) | |
| 2419 { | |
| 2420 /* Include max number of filler lines */ | |
| 2421 max_topfill(); | |
| 2422 continue; | |
| 2423 } | |
| 2424 #endif | |
|
10349
cf988222b150
commit https://github.com/vim/vim/commit/a1f4cb93ba50ea9e40cd4b1f5592b8a6d1398660
Christian Brabandt <cb@256bit.org>
parents:
10295
diff
changeset
|
2425 if (ONE_WINDOW && p_window > 0 && p_window < Rows - 1) |
| 164 | 2426 { |
| 2427 /* Vi compatible scrolling (sort of) */ | |
| 2428 if (p_window <= 2) | |
| 2429 --curwin->w_topline; | |
| 2430 else | |
| 2431 curwin->w_topline -= p_window - 2; | |
| 2432 if (curwin->w_topline < 1) | |
| 2433 curwin->w_topline = 1; | |
| 2434 curwin->w_cursor.lnum = curwin->w_topline + p_window - 1; | |
| 2435 if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count) | |
| 2436 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; | |
| 2437 continue; | |
| 2438 } | |
| 2439 | |
| 7 | 2440 /* Find the line at the top of the window that is going to be the |
| 2441 * line at the bottom of the window. Make sure this results in | |
| 2442 * the same line as before doing CTRL-F. */ | |
| 2443 loff.lnum = curwin->w_topline - 1; | |
| 2444 #ifdef FEAT_DIFF | |
| 2445 loff.fill = diff_check_fill(curwin, loff.lnum + 1) | |
| 2446 - curwin->w_topfill; | |
| 2447 #endif | |
| 2448 get_scroll_overlap(&loff, 1); | |
| 2449 | |
| 2450 if (loff.lnum >= curbuf->b_ml.ml_line_count) | |
| 2451 { | |
| 2452 loff.lnum = curbuf->b_ml.ml_line_count; | |
| 2453 #ifdef FEAT_DIFF | |
| 2454 loff.fill = 0; | |
| 2455 } | |
| 2456 else | |
| 2457 { | |
| 2458 botline_topline(&loff); | |
| 2459 #endif | |
| 2460 } | |
| 2461 curwin->w_cursor.lnum = loff.lnum; | |
| 2462 | |
| 2463 /* Find the line just above the new topline to get the right line | |
| 2464 * at the bottom of the window. */ | |
| 2465 n = 0; | |
| 2466 while (n <= curwin->w_height && loff.lnum >= 1) | |
| 2467 { | |
| 2468 topline_back(&loff); | |
|
2082
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2469 if (loff.height == MAXCOL) |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2470 n = MAXCOL; |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2471 else |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2472 n += loff.height; |
| 7 | 2473 } |
|
2082
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2474 if (loff.lnum < 1) /* at begin of file */ |
| 7 | 2475 { |
| 2476 curwin->w_topline = 1; | |
| 2477 #ifdef FEAT_DIFF | |
| 2478 max_topfill(); | |
| 2479 #endif | |
| 2480 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 2481 } | |
| 2482 else | |
| 2483 { | |
| 2484 /* Go two lines forward again. */ | |
| 2485 #ifdef FEAT_DIFF | |
| 2486 topline_botline(&loff); | |
| 2487 #endif | |
| 2488 botline_forw(&loff); | |
| 2489 botline_forw(&loff); | |
| 2490 #ifdef FEAT_DIFF | |
| 2491 botline_topline(&loff); | |
| 2492 #endif | |
| 2493 #ifdef FEAT_FOLDING | |
| 2494 /* We're at the wrong end of a fold now. */ | |
| 2495 (void)hasFolding(loff.lnum, &loff.lnum, NULL); | |
| 2496 #endif | |
| 2497 | |
| 2498 /* Always scroll at least one line. Avoid getting stuck on | |
| 2499 * very long lines. */ | |
| 2500 if (loff.lnum >= curwin->w_topline | |
| 2501 #ifdef FEAT_DIFF | |
| 2502 && (loff.lnum > curwin->w_topline | |
| 2503 || loff.fill >= curwin->w_topfill) | |
| 2504 #endif | |
| 2505 ) | |
| 2506 { | |
| 2507 #ifdef FEAT_DIFF | |
| 2508 /* First try using the maximum number of filler lines. If | |
| 2509 * that's not enough, backup one line. */ | |
| 2510 loff.fill = curwin->w_topfill; | |
| 2511 if (curwin->w_topfill < diff_check_fill(curwin, | |
| 2512 curwin->w_topline)) | |
| 2513 max_topfill(); | |
| 2514 if (curwin->w_topfill == loff.fill) | |
| 2515 #endif | |
| 2516 { | |
| 2517 --curwin->w_topline; | |
| 2518 #ifdef FEAT_DIFF | |
| 2519 curwin->w_topfill = 0; | |
| 2520 #endif | |
| 2521 } | |
| 2522 comp_botline(curwin); | |
| 2523 curwin->w_cursor.lnum = curwin->w_botline - 1; | |
| 5764 | 2524 curwin->w_valid &= |
| 2525 ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW|VALID_CROW); | |
| 7 | 2526 } |
| 2527 else | |
| 2528 { | |
| 2529 curwin->w_topline = loff.lnum; | |
| 2530 #ifdef FEAT_DIFF | |
| 2531 curwin->w_topfill = loff.fill; | |
| 2532 check_topfill(curwin, FALSE); | |
| 2533 #endif | |
| 2534 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 2535 } | |
| 2536 } | |
| 2537 } | |
| 2538 } | |
| 2539 #ifdef FEAT_FOLDING | |
| 2540 foldAdjustCursor(); | |
| 2541 #endif | |
| 2542 cursor_correct(); | |
|
10102
b80ad55d62d8
commit https://github.com/vim/vim/commit/bc54f3f3fed4dc3556df8c46cee6739d211b0eb2
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
2543 check_cursor_col(); |
| 161 | 2544 if (retval == OK) |
| 2545 beginline(BL_SOL | BL_FIX); | |
| 7 | 2546 curwin->w_valid &= ~(VALID_WCOL|VALID_WROW|VALID_VIRTCOL); |
| 2547 | |
|
14317
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2548 if (retval == OK && dir == FORWARD) |
| 7 | 2549 { |
|
14317
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2550 // 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
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2551 // 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
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2552 // wrapping lines and non-wrapping line). |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2553 if (check_top_offset()) |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2554 { |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2555 scroll_cursor_top(1, FALSE); |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2556 if (curwin->w_topline <= old_topline |
| 7 | 2557 && old_topline < curbuf->b_ml.ml_line_count) |
|
14317
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2558 { |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2559 curwin->w_topline = old_topline + 1; |
| 7 | 2560 #ifdef FEAT_FOLDING |
|
14317
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2561 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2562 #endif |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2563 } |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2564 } |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2565 #ifdef FEAT_FOLDING |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2566 else if (curwin->w_botline > curbuf->b_ml.ml_line_count) |
| 7 | 2567 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
| 2568 #endif | |
| 2569 } | |
| 2570 | |
| 2571 redraw_later(VALID); | |
| 2572 return retval; | |
| 2573 } | |
| 2574 | |
| 2575 /* | |
| 2576 * Decide how much overlap to use for page-up or page-down scrolling. | |
| 2577 * This is symmetric, so that doing both keeps the same lines displayed. | |
| 2578 * Three lines are examined: | |
| 2579 * | |
| 2580 * before CTRL-F after CTRL-F / before CTRL-B | |
| 2581 * etc. l1 | |
| 2582 * l1 last but one line ------------ | |
| 2583 * l2 last text line l2 top text line | |
| 2584 * ------------- l3 second text line | |
| 2585 * l3 etc. | |
| 2586 */ | |
| 2587 static void | |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2588 get_scroll_overlap(lineoff_T *lp, int dir) |
| 7 | 2589 { |
| 2590 int h1, h2, h3, h4; | |
| 2591 int min_height = curwin->w_height - 2; | |
| 2592 lineoff_T loff0, loff1, loff2; | |
| 2593 | |
| 2594 #ifdef FEAT_DIFF | |
| 2595 if (lp->fill > 0) | |
| 2596 lp->height = 1; | |
| 2597 else | |
| 2598 lp->height = plines_nofill(lp->lnum); | |
| 2599 #else | |
| 2600 lp->height = plines(lp->lnum); | |
| 2601 #endif | |
| 2602 h1 = lp->height; | |
| 2603 if (h1 > min_height) | |
| 2604 return; /* no overlap */ | |
| 2605 | |
| 2606 loff0 = *lp; | |
| 2607 if (dir > 0) | |
| 2608 botline_forw(lp); | |
| 2609 else | |
| 2610 topline_back(lp); | |
| 2611 h2 = lp->height; | |
| 3968 | 2612 if (h2 == MAXCOL || h2 + h1 > min_height) |
| 7 | 2613 { |
| 2614 *lp = loff0; /* no overlap */ | |
| 2615 return; | |
| 2616 } | |
| 2617 | |
| 2618 loff1 = *lp; | |
| 2619 if (dir > 0) | |
| 2620 botline_forw(lp); | |
| 2621 else | |
| 2622 topline_back(lp); | |
| 2623 h3 = lp->height; | |
| 3968 | 2624 if (h3 == MAXCOL || h3 + h2 > min_height) |
| 7 | 2625 { |
| 2626 *lp = loff0; /* no overlap */ | |
| 2627 return; | |
| 2628 } | |
| 2629 | |
| 2630 loff2 = *lp; | |
| 2631 if (dir > 0) | |
| 2632 botline_forw(lp); | |
| 2633 else | |
| 2634 topline_back(lp); | |
| 2635 h4 = lp->height; | |
| 3968 | 2636 if (h4 == MAXCOL || h4 + h3 + h2 > min_height || h3 + h2 + h1 > min_height) |
| 7 | 2637 *lp = loff1; /* 1 line overlap */ |
| 2638 else | |
| 2639 *lp = loff2; /* 2 lines overlap */ | |
| 2640 return; | |
| 2641 } | |
| 2642 | |
| 2643 /* | |
| 2644 * Scroll 'scroll' lines up or down. | |
| 2645 */ | |
| 2646 void | |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2647 halfpage(int flag, linenr_T Prenum) |
| 7 | 2648 { |
| 2649 long scrolled = 0; | |
| 2650 int i; | |
| 2651 int n; | |
| 2652 int room; | |
| 2653 | |
| 2654 if (Prenum) | |
| 2655 curwin->w_p_scr = (Prenum > curwin->w_height) ? | |
| 2656 curwin->w_height : Prenum; | |
| 2657 n = (curwin->w_p_scr <= curwin->w_height) ? | |
| 2658 curwin->w_p_scr : curwin->w_height; | |
| 2659 | |
|
11258
84f71a8a5f2c
patch 8.0.0515: ml_get errors in silent Ex mode
Christian Brabandt <cb@256bit.org>
parents:
11121
diff
changeset
|
2660 update_topline(); |
| 7 | 2661 validate_botline(); |
| 2662 room = curwin->w_empty_rows; | |
| 2663 #ifdef FEAT_DIFF | |
| 2664 room += curwin->w_filler_rows; | |
| 2665 #endif | |
| 2666 if (flag) | |
| 2667 { | |
| 2668 /* | |
| 2669 * scroll the text up | |
| 2670 */ | |
| 2671 while (n > 0 && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 2672 { | |
| 2673 #ifdef FEAT_DIFF | |
| 2674 if (curwin->w_topfill > 0) | |
| 2675 { | |
| 2676 i = 1; | |
| 2677 if (--n < 0 && scrolled > 0) | |
| 2678 break; | |
| 2679 --curwin->w_topfill; | |
| 2680 } | |
| 2681 else | |
| 2682 #endif | |
| 2683 { | |
|
7103
84d318257a45
commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2684 i = PLINES_NOFILL(curwin->w_topline); |
| 7 | 2685 n -= i; |
| 2686 if (n < 0 && scrolled > 0) | |
| 2687 break; | |
| 2688 #ifdef FEAT_FOLDING | |
| 2689 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
| 2690 #endif | |
| 2691 ++curwin->w_topline; | |
| 2692 #ifdef FEAT_DIFF | |
| 2693 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 2694 #endif | |
| 2695 | |
| 2696 if (curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
| 2697 { | |
| 2698 ++curwin->w_cursor.lnum; | |
| 2699 curwin->w_valid &= | |
| 2700 ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
| 2701 } | |
| 2702 } | |
| 2703 curwin->w_valid &= ~(VALID_CROW|VALID_WROW); | |
| 2704 scrolled += i; | |
| 2705 | |
| 2706 /* | |
| 2707 * Correct w_botline for changed w_topline. | |
| 2708 * Won't work when there are filler lines. | |
| 2709 */ | |
| 2710 #ifdef FEAT_DIFF | |
| 2711 if (curwin->w_p_diff) | |
| 2712 curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2713 else | |
| 2714 #endif | |
| 2715 { | |
| 2716 room += i; | |
| 2717 do | |
| 2718 { | |
| 2719 i = plines(curwin->w_botline); | |
| 2720 if (i > room) | |
| 2721 break; | |
| 2722 #ifdef FEAT_FOLDING | |
| 2723 (void)hasFolding(curwin->w_botline, NULL, | |
| 2724 &curwin->w_botline); | |
| 2725 #endif | |
| 2726 ++curwin->w_botline; | |
| 2727 room -= i; | |
| 2728 } while (curwin->w_botline <= curbuf->b_ml.ml_line_count); | |
| 2729 } | |
| 2730 } | |
| 2731 | |
| 2732 /* | |
| 2733 * When hit bottom of the file: move cursor down. | |
| 2734 */ | |
| 2735 if (n > 0) | |
| 2736 { | |
| 2737 # ifdef FEAT_FOLDING | |
| 2738 if (hasAnyFolding(curwin)) | |
| 2739 { | |
| 2740 while (--n >= 0 | |
| 2741 && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
| 2742 { | |
| 2743 (void)hasFolding(curwin->w_cursor.lnum, NULL, | |
| 2744 &curwin->w_cursor.lnum); | |
| 2745 ++curwin->w_cursor.lnum; | |
| 2746 } | |
| 2747 } | |
| 2748 else | |
| 2749 # endif | |
| 2750 curwin->w_cursor.lnum += n; | |
| 2751 check_cursor_lnum(); | |
| 2752 } | |
| 2753 } | |
| 2754 else | |
| 2755 { | |
| 2756 /* | |
| 2757 * scroll the text down | |
| 2758 */ | |
| 2759 while (n > 0 && curwin->w_topline > 1) | |
| 2760 { | |
| 2761 #ifdef FEAT_DIFF | |
| 2762 if (curwin->w_topfill < diff_check_fill(curwin, curwin->w_topline)) | |
| 2763 { | |
| 2764 i = 1; | |
|
16042
7952be788a49
patch 8.1.1026: unused condition
Bram Moolenaar <Bram@vim.org>
parents:
15713
diff
changeset
|
2765 --n; |
| 7 | 2766 ++curwin->w_topfill; |
| 2767 } | |
| 2768 else | |
| 2769 #endif | |
| 2770 { | |
|
7103
84d318257a45
commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2771 i = PLINES_NOFILL(curwin->w_topline - 1); |
| 7 | 2772 n -= i; |
| 2773 if (n < 0 && scrolled > 0) | |
| 2774 break; | |
| 2775 --curwin->w_topline; | |
| 2776 #ifdef FEAT_FOLDING | |
| 2777 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 2778 #endif | |
| 2779 #ifdef FEAT_DIFF | |
| 2780 curwin->w_topfill = 0; | |
| 2781 #endif | |
| 2782 } | |
| 2783 curwin->w_valid &= ~(VALID_CROW|VALID_WROW| | |
| 2784 VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2785 scrolled += i; | |
| 2786 if (curwin->w_cursor.lnum > 1) | |
| 2787 { | |
| 2788 --curwin->w_cursor.lnum; | |
| 2789 curwin->w_valid &= ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
| 2790 } | |
| 2791 } | |
|
16042
7952be788a49
patch 8.1.1026: unused condition
Bram Moolenaar <Bram@vim.org>
parents:
15713
diff
changeset
|
2792 |
| 7 | 2793 /* |
| 2794 * When hit top of the file: move cursor up. | |
| 2795 */ | |
| 2796 if (n > 0) | |
| 2797 { | |
| 2798 if (curwin->w_cursor.lnum <= (linenr_T)n) | |
| 2799 curwin->w_cursor.lnum = 1; | |
| 2800 else | |
| 2801 # ifdef FEAT_FOLDING | |
| 2802 if (hasAnyFolding(curwin)) | |
| 2803 { | |
| 2804 while (--n >= 0 && curwin->w_cursor.lnum > 1) | |
| 2805 { | |
| 2806 --curwin->w_cursor.lnum; | |
| 2807 (void)hasFolding(curwin->w_cursor.lnum, | |
| 2808 &curwin->w_cursor.lnum, NULL); | |
| 2809 } | |
| 2810 } | |
| 2811 else | |
| 2812 # endif | |
| 2813 curwin->w_cursor.lnum -= n; | |
| 2814 } | |
| 2815 } | |
| 2816 # ifdef FEAT_FOLDING | |
| 2817 /* Move cursor to first line of closed fold. */ | |
| 2818 foldAdjustCursor(); | |
| 2819 # endif | |
| 2820 #ifdef FEAT_DIFF | |
| 2821 check_topfill(curwin, !flag); | |
| 2822 #endif | |
| 2823 cursor_correct(); | |
| 2824 beginline(BL_SOL | BL_FIX); | |
| 2825 redraw_later(VALID); | |
| 2826 } | |
|
2250
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2827 |
|
1bac28a53fae
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Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2828 void |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2829 do_check_cursorbind(void) |
|
2250
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2830 { |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2831 linenr_T line = curwin->w_cursor.lnum; |
| 3415 | 2832 colnr_T col = curwin->w_cursor.col; |
| 2833 colnr_T coladd = curwin->w_cursor.coladd; | |
| 3433 | 2834 colnr_T curswant = curwin->w_curswant; |
| 2835 int set_curswant = curwin->w_set_curswant; | |
|
2250
1bac28a53fae
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Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2836 win_T *old_curwin = curwin; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2837 buf_T *old_curbuf = curbuf; |
| 2693 | 2838 int restart_edit_save; |
|
2250
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2839 int old_VIsual_select = VIsual_select; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2840 int old_VIsual_active = VIsual_active; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
2210
diff
changeset
|
2841 |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
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2842 /* |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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diff
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2843 * loop through the cursorbound windows |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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changeset
|
2844 */ |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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parents:
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diff
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|
2845 VIsual_select = VIsual_active = 0; |
|
9649
fd9727ae3c49
commit https://github.com/vim/vim/commit/2932359000b2f918d5fade79ea4d124d5943cd07
Christian Brabandt <cb@256bit.org>
parents:
8643
diff
changeset
|
2846 FOR_ALL_WINDOWS(curwin) |
|
2250
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Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
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2847 { |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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diff
changeset
|
2848 curbuf = curwin->w_buffer; |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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parents:
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diff
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|
2849 /* skip original window and windows with 'noscrollbind' */ |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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parents:
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diff
changeset
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2850 if (curwin != old_curwin && curwin->w_p_crb) |
|
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Add the conceal patch from Vince Negri.
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parents:
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diff
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|
2851 { |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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parents:
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|
2852 # ifdef FEAT_DIFF |
|
1bac28a53fae
Add the conceal patch from Vince Negri.
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parents:
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diff
changeset
|
2853 if (curwin->w_p_diff) |
|
10295
d0b74b18e4b5
commit https://github.com/vim/vim/commit/025e3e0bafbc85cc4e365145af711edf99d0a90d
Christian Brabandt <cb@256bit.org>
parents:
10102
diff
changeset
|
2854 curwin->w_cursor.lnum = |
|
d0b74b18e4b5
commit https://github.com/vim/vim/commit/025e3e0bafbc85cc4e365145af711edf99d0a90d
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parents:
10102
diff
changeset
|
2855 diff_get_corresponding_line(old_curbuf, line); |
|
2250
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parents:
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|
2856 else |
|
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parents:
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|
2857 # endif |
|
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parents:
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2858 curwin->w_cursor.lnum = line; |
|
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2859 curwin->w_cursor.col = col; |
| 3415 | 2860 curwin->w_cursor.coladd = coladd; |
| 3433 | 2861 curwin->w_curswant = curswant; |
| 2862 curwin->w_set_curswant = set_curswant; | |
|
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2863 |
| 2693 | 2864 /* Make sure the cursor is in a valid position. Temporarily set |
| 2865 * "restart_edit" to allow the cursor to be beyond the EOL. */ | |
| 2866 restart_edit_save = restart_edit; | |
| 2867 restart_edit = TRUE; | |
|
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2868 check_cursor(); |
|
10607
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patch 8.0.0193: accidentally removed #ifdef
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|
2869 # ifdef FEAT_SYN_HL |
|
10597
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patch 8.0.0188: redrawing for 'cursorbind' is inefficient
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2870 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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|
2871 validate_cursor(); |
|
10607
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2872 # endif |
| 2693 | 2873 restart_edit = restart_edit_save; |
|
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2874 /* Correct cursor for multi-byte character. */ |
|
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2875 if (has_mbyte) |
|
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2876 mb_adjust_cursor(); |
|
10597
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patch 8.0.0188: redrawing for 'cursorbind' is inefficient
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|
2877 redraw_later(VALID); |
|
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2878 |
| 2688 | 2879 /* Only scroll when 'scrollbind' hasn't done this. */ |
| 2880 if (!curwin->w_p_scb) | |
| 2881 update_topline(); | |
|
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2882 curwin->w_redr_status = TRUE; |
|
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parents:
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2883 } |
|
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parents:
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2884 } |
|
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parents:
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|
2885 |
|
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parents:
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diff
changeset
|
2886 /* |
|
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parents:
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diff
changeset
|
2887 * reset current-window |
|
1bac28a53fae
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parents:
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|
2888 */ |
|
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parents:
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|
2889 VIsual_select = old_VIsual_select; |
|
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parents:
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2890 VIsual_active = old_VIsual_active; |
|
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Bram Moolenaar <bram@vim.org>
parents:
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changeset
|
2891 curwin = old_curwin; |
|
1bac28a53fae
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Bram Moolenaar <bram@vim.org>
parents:
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changeset
|
2892 curbuf = old_curbuf; |
|
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parents:
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2893 } |