Mercurial > vim
annotate src/move.c @ 10607:e39300d3d2cf v8.0.0193
patch 8.0.0193: accidentally removed #ifdef
commit https://github.com/vim/vim/commit/1b9750d8054ce4a5a6f84af9f10654330bbf869b
Author: Bram Moolenaar <Bram@vim.org>
Date: Sun Jan 15 20:51:37 2017 +0100
patch 8.0.0193: accidentally removed #ifdef
Problem: Accidentally removed #ifdef.
Solution: Put it back. (Masanori Misono)
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Sun, 15 Jan 2017 21:00:04 +0100 |
| parents | 472bff31a20a |
| children | 778c10516955 |
| rev | line source |
|---|---|
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commit https://github.com/vim/vim/commit/edf3f97ae2af024708ebb4ac614227327033ca47
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
1 /* vi:set ts=8 sts=4 sw=4 noet: |
| 7 | 2 * |
| 3 * VIM - Vi IMproved by Bram Moolenaar | |
| 4 * | |
| 5 * Do ":help uganda" in Vim to read copying and usage conditions. | |
| 6 * Do ":help credits" in Vim to see a list of people who contributed. | |
| 7 * See README.txt for an overview of the Vim source code. | |
| 8 */ | |
| 9 /* | |
| 10 * move.c: Functions for moving the cursor and scrolling text. | |
| 11 * | |
| 12 * There are two ways to move the cursor: | |
| 13 * 1. Move the cursor directly, the text is scrolled to keep the cursor in the | |
| 14 * window. | |
| 15 * 2. Scroll the text, the cursor is moved into the text visible in the | |
| 16 * window. | |
| 17 * The 'scrolloff' option makes this a bit complicated. | |
| 18 */ | |
| 19 | |
| 20 #include "vim.h" | |
| 21 | |
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commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
Christian Brabandt <cb@256bit.org>
parents:
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22 static void comp_botline(win_T *wp); |
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37c929c4a073
commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
Christian Brabandt <cb@256bit.org>
parents:
7103
diff
changeset
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23 static void redraw_for_cursorline(win_T *wp); |
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37c929c4a073
commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
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24 static int scrolljump_value(void); |
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37c929c4a073
commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
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25 static int check_top_offset(void); |
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37c929c4a073
commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
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26 static void curs_rows(win_T *wp); |
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37c929c4a073
commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
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parents:
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27 static void validate_cheight(void); |
| 7 | 28 |
| 29 typedef struct | |
| 30 { | |
| 31 linenr_T lnum; /* line number */ | |
| 32 #ifdef FEAT_DIFF | |
| 33 int fill; /* filler lines */ | |
| 34 #endif | |
| 35 int height; /* height of added line */ | |
| 36 } lineoff_T; | |
| 37 | |
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commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
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parents:
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38 static void topline_back(lineoff_T *lp); |
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37c929c4a073
commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
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39 static void botline_forw(lineoff_T *lp); |
| 7 | 40 #ifdef FEAT_DIFF |
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commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
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parents:
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41 static void botline_topline(lineoff_T *lp); |
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37c929c4a073
commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
Christian Brabandt <cb@256bit.org>
parents:
7103
diff
changeset
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42 static void topline_botline(lineoff_T *lp); |
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37c929c4a073
commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
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43 static void max_topfill(void); |
| 7 | 44 #endif |
| 45 | |
| 46 /* | |
| 47 * Compute wp->w_botline for the current wp->w_topline. Can be called after | |
| 48 * wp->w_topline changed. | |
| 49 */ | |
| 50 static void | |
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commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
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51 comp_botline(win_T *wp) |
| 7 | 52 { |
| 53 int n; | |
| 54 linenr_T lnum; | |
| 55 int done; | |
| 56 #ifdef FEAT_FOLDING | |
| 57 linenr_T last; | |
| 58 int folded; | |
| 59 #endif | |
| 60 | |
| 61 /* | |
| 62 * If w_cline_row is valid, start there. | |
| 63 * Otherwise have to start at w_topline. | |
| 64 */ | |
| 65 check_cursor_moved(wp); | |
| 66 if (wp->w_valid & VALID_CROW) | |
| 67 { | |
| 68 lnum = wp->w_cursor.lnum; | |
| 69 done = wp->w_cline_row; | |
| 70 } | |
| 71 else | |
| 72 { | |
| 73 lnum = wp->w_topline; | |
| 74 done = 0; | |
| 75 } | |
| 76 | |
| 77 for ( ; lnum <= wp->w_buffer->b_ml.ml_line_count; ++lnum) | |
| 78 { | |
| 79 #ifdef FEAT_FOLDING | |
| 80 last = lnum; | |
| 81 folded = FALSE; | |
| 82 if (hasFoldingWin(wp, lnum, NULL, &last, TRUE, NULL)) | |
| 83 { | |
| 84 n = 1; | |
| 85 folded = TRUE; | |
| 86 } | |
| 87 else | |
| 88 #endif | |
| 89 #ifdef FEAT_DIFF | |
| 90 if (lnum == wp->w_topline) | |
| 91 n = plines_win_nofill(wp, lnum, TRUE) + wp->w_topfill; | |
| 92 else | |
| 93 #endif | |
| 94 n = plines_win(wp, lnum, TRUE); | |
| 95 if ( | |
| 96 #ifdef FEAT_FOLDING | |
| 97 lnum <= wp->w_cursor.lnum && last >= wp->w_cursor.lnum | |
| 98 #else | |
| 99 lnum == wp->w_cursor.lnum | |
| 100 #endif | |
| 101 ) | |
| 102 { | |
| 103 wp->w_cline_row = done; | |
| 104 wp->w_cline_height = n; | |
| 105 #ifdef FEAT_FOLDING | |
| 106 wp->w_cline_folded = folded; | |
| 107 #endif | |
| 5764 | 108 redraw_for_cursorline(wp); |
| 7 | 109 wp->w_valid |= (VALID_CROW|VALID_CHEIGHT); |
| 110 } | |
| 111 if (done + n > wp->w_height) | |
| 112 break; | |
| 113 done += n; | |
| 114 #ifdef FEAT_FOLDING | |
| 115 lnum = last; | |
| 116 #endif | |
| 117 } | |
| 118 | |
| 119 /* wp->w_botline is the line that is just below the window */ | |
| 120 wp->w_botline = lnum; | |
| 121 wp->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 122 | |
| 123 set_empty_rows(wp, done); | |
| 124 } | |
| 125 | |
| 126 /* | |
| 5764 | 127 * Redraw when w_cline_row changes and 'relativenumber' or 'cursorline' is |
| 128 * set. | |
| 129 */ | |
| 130 static void | |
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parents:
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diff
changeset
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131 redraw_for_cursorline(win_T *wp) |
| 5764 | 132 { |
| 133 if ((wp->w_p_rnu | |
| 134 #ifdef FEAT_SYN_HL | |
| 135 || wp->w_p_cul | |
| 136 #endif | |
| 137 ) | |
| 138 && (wp->w_valid & VALID_CROW) == 0 | |
| 139 # ifdef FEAT_INS_EXPAND | |
| 140 && !pum_visible() | |
| 141 # endif | |
| 142 ) | |
| 143 redraw_win_later(wp, SOME_VALID); | |
| 144 } | |
| 145 | |
| 146 /* | |
| 7 | 147 * Update curwin->w_topline and redraw if necessary. |
| 148 * Used to update the screen before printing a message. | |
| 149 */ | |
| 150 void | |
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commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
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parents:
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diff
changeset
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151 update_topline_redraw(void) |
| 7 | 152 { |
| 153 update_topline(); | |
| 154 if (must_redraw) | |
| 155 update_screen(0); | |
| 156 } | |
| 157 | |
| 158 /* | |
| 159 * Update curwin->w_topline to move the cursor onto the screen. | |
| 160 */ | |
| 161 void | |
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commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
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162 update_topline(void) |
| 7 | 163 { |
| 164 long line_count; | |
| 165 int halfheight; | |
| 166 int n; | |
| 167 linenr_T old_topline; | |
| 168 #ifdef FEAT_DIFF | |
| 169 int old_topfill; | |
| 170 #endif | |
| 171 #ifdef FEAT_FOLDING | |
| 172 linenr_T lnum; | |
| 173 #endif | |
| 174 int check_topline = FALSE; | |
| 175 int check_botline = FALSE; | |
| 176 #ifdef FEAT_MOUSE | |
| 177 int save_so = p_so; | |
| 178 #endif | |
| 179 | |
| 180 if (!screen_valid(TRUE)) | |
| 181 return; | |
| 182 | |
| 6247 | 183 /* If the window height is zero just use the cursor line. */ |
| 184 if (curwin->w_height == 0) | |
| 185 { | |
| 186 curwin->w_topline = curwin->w_cursor.lnum; | |
| 187 curwin->w_botline = curwin->w_topline; | |
| 188 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 189 #ifdef FEAT_SCROLLBIND | |
| 190 curwin->w_scbind_pos = 1; | |
| 191 #endif | |
| 192 return; | |
| 193 } | |
| 194 | |
| 7 | 195 check_cursor_moved(curwin); |
| 196 if (curwin->w_valid & VALID_TOPLINE) | |
| 197 return; | |
| 198 | |
| 199 #ifdef FEAT_MOUSE | |
| 200 /* When dragging with the mouse, don't scroll that quickly */ | |
| 1121 | 201 if (mouse_dragging > 0) |
| 7 | 202 p_so = mouse_dragging - 1; |
| 203 #endif | |
| 204 | |
| 205 old_topline = curwin->w_topline; | |
| 206 #ifdef FEAT_DIFF | |
| 207 old_topfill = curwin->w_topfill; | |
| 208 #endif | |
| 209 | |
| 210 /* | |
| 211 * If the buffer is empty, always set topline to 1. | |
| 212 */ | |
| 213 if (bufempty()) /* special case - file is empty */ | |
| 214 { | |
| 215 if (curwin->w_topline != 1) | |
| 216 redraw_later(NOT_VALID); | |
| 217 curwin->w_topline = 1; | |
| 218 curwin->w_botline = 2; | |
| 219 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 220 #ifdef FEAT_SCROLLBIND | |
| 221 curwin->w_scbind_pos = 1; | |
| 222 #endif | |
| 223 } | |
| 224 | |
| 225 /* | |
| 226 * If the cursor is above or near the top of the window, scroll the window | |
| 227 * to show the line the cursor is in, with 'scrolloff' context. | |
| 228 */ | |
| 229 else | |
| 230 { | |
| 231 if (curwin->w_topline > 1) | |
| 232 { | |
| 233 /* If the cursor is above topline, scrolling is always needed. | |
| 234 * If the cursor is far below topline and there is no folding, | |
| 235 * scrolling down is never needed. */ | |
| 236 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 237 check_topline = TRUE; | |
| 238 else if (check_top_offset()) | |
| 239 check_topline = TRUE; | |
| 240 } | |
| 241 #ifdef FEAT_DIFF | |
| 242 /* Check if there are more filler lines than allowed. */ | |
| 243 if (!check_topline && curwin->w_topfill > diff_check_fill(curwin, | |
| 244 curwin->w_topline)) | |
| 245 check_topline = TRUE; | |
| 246 #endif | |
| 247 | |
| 248 if (check_topline) | |
| 249 { | |
| 250 halfheight = curwin->w_height / 2 - 1; | |
| 251 if (halfheight < 2) | |
| 252 halfheight = 2; | |
| 253 | |
| 254 #ifdef FEAT_FOLDING | |
| 255 if (hasAnyFolding(curwin)) | |
| 256 { | |
| 257 /* Count the number of logical lines between the cursor and | |
| 258 * topline + p_so (approximation of how much will be | |
| 259 * scrolled). */ | |
| 260 n = 0; | |
| 261 for (lnum = curwin->w_cursor.lnum; | |
| 262 lnum < curwin->w_topline + p_so; ++lnum) | |
| 263 { | |
| 264 ++n; | |
| 265 /* stop at end of file or when we know we are far off */ | |
| 266 if (lnum >= curbuf->b_ml.ml_line_count || n >= halfheight) | |
| 267 break; | |
| 268 (void)hasFolding(lnum, NULL, &lnum); | |
| 269 } | |
| 270 } | |
| 271 else | |
| 272 #endif | |
| 273 n = curwin->w_topline + p_so - curwin->w_cursor.lnum; | |
| 274 | |
| 275 /* If we weren't very close to begin with, we scroll to put the | |
| 276 * cursor in the middle of the window. Otherwise put the cursor | |
| 277 * near the top of the window. */ | |
| 278 if (n >= halfheight) | |
| 279 scroll_cursor_halfway(FALSE); | |
| 280 else | |
| 281 { | |
| 532 | 282 scroll_cursor_top(scrolljump_value(), FALSE); |
| 7 | 283 check_botline = TRUE; |
| 284 } | |
| 285 } | |
| 286 | |
| 287 else | |
| 288 { | |
| 289 #ifdef FEAT_FOLDING | |
| 290 /* Make sure topline is the first line of a fold. */ | |
| 291 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 292 #endif | |
| 293 check_botline = TRUE; | |
| 294 } | |
| 295 } | |
| 296 | |
| 297 /* | |
| 298 * If the cursor is below the bottom of the window, scroll the window | |
| 299 * to put the cursor on the window. | |
| 300 * When w_botline is invalid, recompute it first, to avoid a redraw later. | |
| 301 * If w_botline was approximated, we might need a redraw later in a few | |
| 302 * cases, but we don't want to spend (a lot of) time recomputing w_botline | |
| 303 * for every small change. | |
| 304 */ | |
| 305 if (check_botline) | |
| 306 { | |
| 307 if (!(curwin->w_valid & VALID_BOTLINE_AP)) | |
| 308 validate_botline(); | |
| 309 | |
| 310 if (curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 311 { | |
| 1744 | 312 if (curwin->w_cursor.lnum < curwin->w_botline) |
| 313 { | |
| 314 if (((long)curwin->w_cursor.lnum | |
| 7 | 315 >= (long)curwin->w_botline - p_so |
| 316 #ifdef FEAT_FOLDING | |
| 317 || hasAnyFolding(curwin) | |
| 318 #endif | |
| 319 )) | |
| 1744 | 320 { |
| 7 | 321 lineoff_T loff; |
| 322 | |
| 1744 | 323 /* Cursor is (a few lines) above botline, check if there are |
| 324 * 'scrolloff' window lines below the cursor. If not, need to | |
| 325 * scroll. */ | |
| 7 | 326 n = curwin->w_empty_rows; |
| 327 loff.lnum = curwin->w_cursor.lnum; | |
| 328 #ifdef FEAT_FOLDING | |
| 329 /* In a fold go to its last line. */ | |
| 330 (void)hasFolding(loff.lnum, NULL, &loff.lnum); | |
| 331 #endif | |
| 332 #ifdef FEAT_DIFF | |
| 333 loff.fill = 0; | |
| 334 n += curwin->w_filler_rows; | |
| 335 #endif | |
| 336 loff.height = 0; | |
| 337 while (loff.lnum < curwin->w_botline | |
| 338 #ifdef FEAT_DIFF | |
| 339 && (loff.lnum + 1 < curwin->w_botline || loff.fill == 0) | |
| 340 #endif | |
| 341 ) | |
| 342 { | |
| 343 n += loff.height; | |
| 344 if (n >= p_so) | |
| 345 break; | |
| 346 botline_forw(&loff); | |
| 347 } | |
| 348 if (n >= p_so) | |
| 349 /* sufficient context, no need to scroll */ | |
| 350 check_botline = FALSE; | |
| 1744 | 351 } |
| 352 else | |
| 353 /* sufficient context, no need to scroll */ | |
| 354 check_botline = FALSE; | |
| 7 | 355 } |
| 356 if (check_botline) | |
| 357 { | |
| 358 #ifdef FEAT_FOLDING | |
| 359 if (hasAnyFolding(curwin)) | |
| 360 { | |
| 361 /* Count the number of logical lines between the cursor and | |
| 362 * botline - p_so (approximation of how much will be | |
| 363 * scrolled). */ | |
| 364 line_count = 0; | |
| 365 for (lnum = curwin->w_cursor.lnum; | |
| 366 lnum >= curwin->w_botline - p_so; --lnum) | |
| 367 { | |
| 368 ++line_count; | |
| 369 /* stop at end of file or when we know we are far off */ | |
| 370 if (lnum <= 0 || line_count > curwin->w_height + 1) | |
| 371 break; | |
| 372 (void)hasFolding(lnum, &lnum, NULL); | |
| 373 } | |
| 374 } | |
| 375 else | |
| 376 #endif | |
| 377 line_count = curwin->w_cursor.lnum - curwin->w_botline | |
| 378 + 1 + p_so; | |
| 379 if (line_count <= curwin->w_height + 1) | |
| 532 | 380 scroll_cursor_bot(scrolljump_value(), FALSE); |
| 7 | 381 else |
| 382 scroll_cursor_halfway(FALSE); | |
| 383 } | |
| 384 } | |
| 385 } | |
| 386 curwin->w_valid |= VALID_TOPLINE; | |
| 387 | |
| 388 /* | |
| 389 * Need to redraw when topline changed. | |
| 390 */ | |
| 391 if (curwin->w_topline != old_topline | |
| 392 #ifdef FEAT_DIFF | |
| 393 || curwin->w_topfill != old_topfill | |
| 394 #endif | |
| 395 ) | |
| 396 { | |
| 3318 | 397 dollar_vcol = -1; |
| 740 | 398 if (curwin->w_skipcol != 0) |
| 7 | 399 { |
| 400 curwin->w_skipcol = 0; | |
| 401 redraw_later(NOT_VALID); | |
| 402 } | |
| 403 else | |
| 404 redraw_later(VALID); | |
| 405 /* May need to set w_skipcol when cursor in w_topline. */ | |
| 406 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 407 validate_cursor(); | |
| 408 } | |
| 409 | |
| 410 #ifdef FEAT_MOUSE | |
| 411 p_so = save_so; | |
| 412 #endif | |
| 413 } | |
| 414 | |
| 415 /* | |
| 532 | 416 * Return the scrolljump value to use for the current window. |
| 417 * When 'scrolljump' is positive use it as-is. | |
| 418 * When 'scrolljump' is negative use it as a percentage of the window height. | |
| 419 */ | |
| 420 static int | |
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commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
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parents:
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diff
changeset
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421 scrolljump_value(void) |
| 532 | 422 { |
| 423 if (p_sj >= 0) | |
| 424 return (int)p_sj; | |
| 425 return (curwin->w_height * -p_sj) / 100; | |
| 426 } | |
| 427 | |
| 428 /* | |
| 7 | 429 * Return TRUE when there are not 'scrolloff' lines above the cursor for the |
| 430 * current window. | |
| 431 */ | |
| 432 static int | |
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commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
433 check_top_offset(void) |
| 7 | 434 { |
| 435 lineoff_T loff; | |
| 436 int n; | |
| 437 | |
| 438 if (curwin->w_cursor.lnum < curwin->w_topline + p_so | |
| 439 #ifdef FEAT_FOLDING | |
| 440 || hasAnyFolding(curwin) | |
| 441 #endif | |
| 442 ) | |
| 443 { | |
| 444 loff.lnum = curwin->w_cursor.lnum; | |
| 445 #ifdef FEAT_DIFF | |
| 446 loff.fill = 0; | |
| 447 n = curwin->w_topfill; /* always have this context */ | |
| 448 #else | |
| 449 n = 0; | |
| 450 #endif | |
| 451 /* Count the visible screen lines above the cursor line. */ | |
| 452 while (n < p_so) | |
| 453 { | |
| 454 topline_back(&loff); | |
| 455 /* Stop when included a line above the window. */ | |
| 456 if (loff.lnum < curwin->w_topline | |
| 457 #ifdef FEAT_DIFF | |
| 458 || (loff.lnum == curwin->w_topline && loff.fill > 0) | |
| 459 #endif | |
| 460 ) | |
| 461 break; | |
| 462 n += loff.height; | |
| 463 } | |
| 464 if (n < p_so) | |
| 465 return TRUE; | |
| 466 } | |
| 467 return FALSE; | |
| 468 } | |
| 469 | |
| 470 void | |
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commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
471 update_curswant(void) |
| 7 | 472 { |
| 473 if (curwin->w_set_curswant) | |
| 474 { | |
| 475 validate_virtcol(); | |
| 476 curwin->w_curswant = curwin->w_virtcol; | |
| 477 curwin->w_set_curswant = FALSE; | |
| 478 } | |
| 479 } | |
| 480 | |
| 481 /* | |
| 482 * Check if the cursor has moved. Set the w_valid flag accordingly. | |
| 483 */ | |
| 484 void | |
|
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485 check_cursor_moved(win_T *wp) |
| 7 | 486 { |
| 487 if (wp->w_cursor.lnum != wp->w_valid_cursor.lnum) | |
| 488 { | |
| 489 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 490 |VALID_CHEIGHT|VALID_CROW|VALID_TOPLINE); | |
| 491 wp->w_valid_cursor = wp->w_cursor; | |
| 492 wp->w_valid_leftcol = wp->w_leftcol; | |
| 493 } | |
| 494 else if (wp->w_cursor.col != wp->w_valid_cursor.col | |
| 495 || wp->w_leftcol != wp->w_valid_leftcol | |
| 496 #ifdef FEAT_VIRTUALEDIT | |
| 497 || wp->w_cursor.coladd != wp->w_valid_cursor.coladd | |
| 498 #endif | |
| 499 ) | |
| 500 { | |
| 501 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL); | |
| 502 wp->w_valid_cursor.col = wp->w_cursor.col; | |
| 503 wp->w_valid_leftcol = wp->w_leftcol; | |
| 504 #ifdef FEAT_VIRTUALEDIT | |
| 505 wp->w_valid_cursor.coladd = wp->w_cursor.coladd; | |
| 506 #endif | |
| 507 } | |
| 508 } | |
| 509 | |
| 510 /* | |
| 511 * Call this function when some window settings have changed, which require | |
| 512 * the cursor position, botline and topline to be recomputed and the window to | |
| 513 * be redrawn. E.g, when changing the 'wrap' option or folding. | |
| 514 */ | |
| 515 void | |
|
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516 changed_window_setting(void) |
| 7 | 517 { |
| 518 changed_window_setting_win(curwin); | |
| 519 } | |
| 520 | |
| 521 void | |
|
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522 changed_window_setting_win(win_T *wp) |
| 7 | 523 { |
| 524 wp->w_lines_valid = 0; | |
| 525 changed_line_abv_curs_win(wp); | |
| 526 wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP|VALID_TOPLINE); | |
| 527 redraw_win_later(wp, NOT_VALID); | |
| 528 } | |
| 529 | |
| 530 /* | |
| 531 * Set wp->w_topline to a certain number. | |
| 532 */ | |
| 533 void | |
|
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534 set_topline(win_T *wp, linenr_T lnum) |
| 7 | 535 { |
| 536 #ifdef FEAT_FOLDING | |
| 537 /* go to first of folded lines */ | |
| 538 (void)hasFoldingWin(wp, lnum, &lnum, NULL, TRUE, NULL); | |
| 539 #endif | |
| 540 /* Approximate the value of w_botline */ | |
| 541 wp->w_botline += lnum - wp->w_topline; | |
| 542 wp->w_topline = lnum; | |
| 1744 | 543 #ifdef FEAT_AUTOCMD |
| 544 wp->w_topline_was_set = TRUE; | |
| 545 #endif | |
| 7 | 546 #ifdef FEAT_DIFF |
| 547 wp->w_topfill = 0; | |
| 548 #endif | |
| 549 wp->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_TOPLINE); | |
| 550 /* Don't set VALID_TOPLINE here, 'scrolloff' needs to be checked. */ | |
| 551 redraw_later(VALID); | |
| 552 } | |
| 553 | |
| 554 /* | |
| 555 * Call this function when the length of the cursor line (in screen | |
| 556 * characters) has changed, and the change is before the cursor. | |
| 557 * Need to take care of w_botline separately! | |
| 558 */ | |
| 559 void | |
|
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changeset
|
560 changed_cline_bef_curs(void) |
| 7 | 561 { |
| 562 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 563 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 564 } | |
| 565 | |
| 566 void | |
|
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changeset
|
567 changed_cline_bef_curs_win(win_T *wp) |
| 7 | 568 { |
| 569 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 570 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 571 } | |
| 572 | |
| 573 /* | |
| 574 * Call this function when the length of a line (in screen characters) above | |
| 575 * the cursor have changed. | |
| 576 * Need to take care of w_botline separately! | |
| 577 */ | |
| 578 void | |
|
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|
579 changed_line_abv_curs(void) |
| 7 | 580 { |
| 581 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
| 582 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 583 } | |
| 584 | |
| 585 void | |
|
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changeset
|
586 changed_line_abv_curs_win(win_T *wp) |
| 7 | 587 { |
| 588 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
| 589 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 590 } | |
| 591 | |
| 592 /* | |
| 593 * Make sure the value of curwin->w_botline is valid. | |
| 594 */ | |
| 595 void | |
|
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596 validate_botline(void) |
| 7 | 597 { |
| 598 if (!(curwin->w_valid & VALID_BOTLINE)) | |
| 599 comp_botline(curwin); | |
| 600 } | |
| 601 | |
| 602 /* | |
| 603 * Mark curwin->w_botline as invalid (because of some change in the buffer). | |
| 604 */ | |
| 605 void | |
|
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606 invalidate_botline(void) |
| 7 | 607 { |
| 608 curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 609 } | |
| 610 | |
| 611 void | |
|
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612 invalidate_botline_win(win_T *wp) |
| 7 | 613 { |
| 614 wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 615 } | |
| 616 | |
| 617 void | |
|
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618 approximate_botline_win( |
|
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|
619 win_T *wp) |
| 7 | 620 { |
| 621 wp->w_valid &= ~VALID_BOTLINE; | |
| 622 } | |
| 623 | |
| 624 /* | |
| 625 * Return TRUE if curwin->w_wrow and curwin->w_wcol are valid. | |
| 626 */ | |
| 627 int | |
|
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|
628 cursor_valid(void) |
| 7 | 629 { |
| 630 check_cursor_moved(curwin); | |
| 631 return ((curwin->w_valid & (VALID_WROW|VALID_WCOL)) == | |
| 632 (VALID_WROW|VALID_WCOL)); | |
| 633 } | |
| 634 | |
| 635 /* | |
| 636 * Validate cursor position. Makes sure w_wrow and w_wcol are valid. | |
| 637 * w_topline must be valid, you may need to call update_topline() first! | |
| 638 */ | |
| 639 void | |
|
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640 validate_cursor(void) |
| 7 | 641 { |
| 642 check_cursor_moved(curwin); | |
| 643 if ((curwin->w_valid & (VALID_WCOL|VALID_WROW)) != (VALID_WCOL|VALID_WROW)) | |
| 644 curs_columns(TRUE); | |
| 645 } | |
| 646 | |
| 647 #if defined(FEAT_GUI) || defined(PROTO) | |
| 648 /* | |
| 649 * validate w_cline_row. | |
| 650 */ | |
| 651 void | |
|
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652 validate_cline_row(void) |
| 7 | 653 { |
| 654 /* | |
| 655 * First make sure that w_topline is valid (after moving the cursor). | |
| 656 */ | |
| 657 update_topline(); | |
| 658 check_cursor_moved(curwin); | |
| 659 if (!(curwin->w_valid & VALID_CROW)) | |
| 6441 | 660 curs_rows(curwin); |
| 7 | 661 } |
| 662 #endif | |
| 663 | |
| 664 /* | |
| 665 * Compute wp->w_cline_row and wp->w_cline_height, based on the current value | |
|
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666 * of wp->w_topline. |
| 7 | 667 */ |
| 668 static void | |
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|
669 curs_rows(win_T *wp) |
| 7 | 670 { |
| 671 linenr_T lnum; | |
| 672 int i; | |
| 673 int all_invalid; | |
| 674 int valid; | |
| 675 #ifdef FEAT_FOLDING | |
| 676 long fold_count; | |
| 677 #endif | |
| 678 | |
| 679 /* Check if wp->w_lines[].wl_size is invalid */ | |
| 680 all_invalid = (!redrawing() | |
| 681 || wp->w_lines_valid == 0 | |
| 682 || wp->w_lines[0].wl_lnum > wp->w_topline); | |
| 683 i = 0; | |
| 684 wp->w_cline_row = 0; | |
| 685 for (lnum = wp->w_topline; lnum < wp->w_cursor.lnum; ++i) | |
| 686 { | |
| 687 valid = FALSE; | |
| 688 if (!all_invalid && i < wp->w_lines_valid) | |
| 689 { | |
| 690 if (wp->w_lines[i].wl_lnum < lnum || !wp->w_lines[i].wl_valid) | |
| 691 continue; /* skip changed or deleted lines */ | |
| 692 if (wp->w_lines[i].wl_lnum == lnum) | |
| 693 { | |
| 694 #ifdef FEAT_FOLDING | |
| 695 /* Check for newly inserted lines below this row, in which | |
| 696 * case we need to check for folded lines. */ | |
| 697 if (!wp->w_buffer->b_mod_set | |
| 698 || wp->w_lines[i].wl_lastlnum < wp->w_cursor.lnum | |
| 699 || wp->w_buffer->b_mod_top | |
| 700 > wp->w_lines[i].wl_lastlnum + 1) | |
| 701 #endif | |
| 702 valid = TRUE; | |
| 703 } | |
| 704 else if (wp->w_lines[i].wl_lnum > lnum) | |
| 705 --i; /* hold at inserted lines */ | |
| 706 } | |
| 707 if (valid | |
| 708 #ifdef FEAT_DIFF | |
| 709 && (lnum != wp->w_topline || !wp->w_p_diff) | |
| 710 #endif | |
| 711 ) | |
| 712 { | |
| 713 #ifdef FEAT_FOLDING | |
| 714 lnum = wp->w_lines[i].wl_lastlnum + 1; | |
| 715 /* Cursor inside folded lines, don't count this row */ | |
| 716 if (lnum > wp->w_cursor.lnum) | |
| 717 break; | |
| 718 #else | |
| 719 ++lnum; | |
| 720 #endif | |
| 721 wp->w_cline_row += wp->w_lines[i].wl_size; | |
| 722 } | |
| 723 else | |
| 724 { | |
| 725 #ifdef FEAT_FOLDING | |
| 726 fold_count = foldedCount(wp, lnum, NULL); | |
| 727 if (fold_count) | |
| 728 { | |
| 729 lnum += fold_count; | |
| 730 if (lnum > wp->w_cursor.lnum) | |
| 731 break; | |
| 732 ++wp->w_cline_row; | |
| 733 } | |
| 734 else | |
| 735 #endif | |
| 736 #ifdef FEAT_DIFF | |
| 737 if (lnum == wp->w_topline) | |
| 738 wp->w_cline_row += plines_win_nofill(wp, lnum++, TRUE) | |
| 739 + wp->w_topfill; | |
| 740 else | |
| 741 #endif | |
| 742 wp->w_cline_row += plines_win(wp, lnum++, TRUE); | |
| 743 } | |
| 744 } | |
| 745 | |
| 746 check_cursor_moved(wp); | |
| 747 if (!(wp->w_valid & VALID_CHEIGHT)) | |
| 748 { | |
| 749 if (all_invalid | |
| 750 || i == wp->w_lines_valid | |
| 751 || (i < wp->w_lines_valid | |
| 752 && (!wp->w_lines[i].wl_valid | |
| 753 || wp->w_lines[i].wl_lnum != wp->w_cursor.lnum))) | |
| 754 { | |
| 755 #ifdef FEAT_DIFF | |
| 756 if (wp->w_cursor.lnum == wp->w_topline) | |
| 757 wp->w_cline_height = plines_win_nofill(wp, wp->w_cursor.lnum, | |
| 758 TRUE) + wp->w_topfill; | |
| 759 else | |
| 760 #endif | |
| 761 wp->w_cline_height = plines_win(wp, wp->w_cursor.lnum, TRUE); | |
| 762 #ifdef FEAT_FOLDING | |
| 763 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
| 764 NULL, NULL, TRUE, NULL); | |
| 765 #endif | |
| 766 } | |
| 767 else if (i > wp->w_lines_valid) | |
| 768 { | |
| 769 /* a line that is too long to fit on the last screen line */ | |
| 770 wp->w_cline_height = 0; | |
| 771 #ifdef FEAT_FOLDING | |
| 772 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
| 773 NULL, NULL, TRUE, NULL); | |
| 774 #endif | |
| 775 } | |
| 776 else | |
| 777 { | |
| 778 wp->w_cline_height = wp->w_lines[i].wl_size; | |
| 779 #ifdef FEAT_FOLDING | |
| 780 wp->w_cline_folded = wp->w_lines[i].wl_folded; | |
| 781 #endif | |
| 782 } | |
| 783 } | |
| 784 | |
| 5764 | 785 redraw_for_cursorline(curwin); |
| 7 | 786 wp->w_valid |= VALID_CROW|VALID_CHEIGHT; |
| 787 | |
| 788 } | |
| 789 | |
| 790 /* | |
| 791 * Validate curwin->w_virtcol only. | |
| 792 */ | |
| 793 void | |
|
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changeset
|
794 validate_virtcol(void) |
| 7 | 795 { |
| 796 validate_virtcol_win(curwin); | |
| 797 } | |
| 798 | |
| 799 /* | |
| 800 * Validate wp->w_virtcol only. | |
| 801 */ | |
| 802 void | |
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803 validate_virtcol_win(win_T *wp) |
| 7 | 804 { |
| 805 check_cursor_moved(wp); | |
| 806 if (!(wp->w_valid & VALID_VIRTCOL)) | |
| 807 { | |
| 808 getvvcol(wp, &wp->w_cursor, NULL, &(wp->w_virtcol), NULL); | |
| 809 wp->w_valid |= VALID_VIRTCOL; | |
| 740 | 810 #ifdef FEAT_SYN_HL |
| 752 | 811 if (wp->w_p_cuc |
| 812 # ifdef FEAT_INS_EXPAND | |
| 813 && !pum_visible() | |
| 814 # endif | |
| 815 ) | |
| 740 | 816 redraw_win_later(wp, SOME_VALID); |
| 817 #endif | |
| 7 | 818 } |
| 819 } | |
| 820 | |
| 821 /* | |
| 822 * Validate curwin->w_cline_height only. | |
| 823 */ | |
| 824 static void | |
|
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825 validate_cheight(void) |
| 7 | 826 { |
| 827 check_cursor_moved(curwin); | |
| 828 if (!(curwin->w_valid & VALID_CHEIGHT)) | |
| 829 { | |
| 830 #ifdef FEAT_DIFF | |
| 831 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 832 curwin->w_cline_height = plines_nofill(curwin->w_cursor.lnum) | |
| 833 + curwin->w_topfill; | |
| 834 else | |
| 835 #endif | |
| 836 curwin->w_cline_height = plines(curwin->w_cursor.lnum); | |
| 837 #ifdef FEAT_FOLDING | |
| 838 curwin->w_cline_folded = hasFolding(curwin->w_cursor.lnum, NULL, NULL); | |
| 839 #endif | |
| 840 curwin->w_valid |= VALID_CHEIGHT; | |
| 841 } | |
| 842 } | |
| 843 | |
| 844 /* | |
| 1668 | 845 * Validate w_wcol and w_virtcol only. |
| 7 | 846 */ |
| 847 void | |
|
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848 validate_cursor_col(void) |
| 7 | 849 { |
| 850 colnr_T off; | |
| 851 colnr_T col; | |
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852 int width; |
| 7 | 853 |
| 854 validate_virtcol(); | |
| 855 if (!(curwin->w_valid & VALID_WCOL)) | |
| 856 { | |
| 857 col = curwin->w_virtcol; | |
| 858 off = curwin_col_off(); | |
| 859 col += off; | |
|
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860 width = W_WIDTH(curwin) - off + curwin_col_off2(); |
| 7 | 861 |
| 862 /* long line wrapping, adjust curwin->w_wrow */ | |
| 1668 | 863 if (curwin->w_p_wrap |
| 864 && col >= (colnr_T)W_WIDTH(curwin) | |
|
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865 && width > 0) |
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866 /* use same formula as what is used in curs_columns() */ |
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867 col -= ((col - W_WIDTH(curwin)) / width + 1) * width; |
| 1668 | 868 if (col > (int)curwin->w_leftcol) |
| 869 col -= curwin->w_leftcol; | |
| 870 else | |
| 871 col = 0; | |
| 7 | 872 curwin->w_wcol = col; |
| 1668 | 873 |
| 7 | 874 curwin->w_valid |= VALID_WCOL; |
| 875 } | |
| 876 } | |
| 877 | |
| 878 /* | |
|
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879 * Compute offset of a window, occupied by absolute or relative line number, |
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880 * fold column and sign column (these don't move when scrolling horizontally). |
| 7 | 881 */ |
| 882 int | |
|
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883 win_col_off(win_T *wp) |
| 7 | 884 { |
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885 return (((wp->w_p_nu || wp->w_p_rnu) ? number_width(wp) + 1 : 0) |
| 7 | 886 #ifdef FEAT_CMDWIN |
| 887 + (cmdwin_type == 0 || wp != curwin ? 0 : 1) | |
| 888 #endif | |
| 889 #ifdef FEAT_FOLDING | |
| 890 + wp->w_p_fdc | |
| 891 #endif | |
| 892 #ifdef FEAT_SIGNS | |
|
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893 + (signcolumn_on(wp) ? 2 : 0) |
| 7 | 894 #endif |
| 895 ); | |
| 896 } | |
| 897 | |
| 898 int | |
|
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899 curwin_col_off(void) |
| 7 | 900 { |
| 901 return win_col_off(curwin); | |
| 902 } | |
| 903 | |
| 904 /* | |
| 905 * Return the difference in column offset for the second screen line of a | |
|
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906 * wrapped line. It's 8 if 'number' or 'relativenumber' is on and 'n' is in |
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907 * 'cpoptions'. |
| 7 | 908 */ |
| 909 int | |
|
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910 win_col_off2(win_T *wp) |
| 7 | 911 { |
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912 if ((wp->w_p_nu || wp->w_p_rnu) && vim_strchr(p_cpo, CPO_NUMCOL) != NULL) |
| 13 | 913 return number_width(wp) + 1; |
| 7 | 914 return 0; |
| 915 } | |
| 916 | |
| 917 int | |
|
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918 curwin_col_off2(void) |
| 7 | 919 { |
| 920 return win_col_off2(curwin); | |
| 921 } | |
| 922 | |
| 923 /* | |
| 924 * compute curwin->w_wcol and curwin->w_virtcol. | |
| 925 * Also updates curwin->w_wrow and curwin->w_cline_row. | |
| 926 * Also updates curwin->w_leftcol. | |
| 927 */ | |
| 928 void | |
|
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929 curs_columns( |
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930 int may_scroll) /* when TRUE, may scroll horizontally */ |
| 7 | 931 { |
| 932 int diff; | |
| 933 int extra; /* offset for first screen line */ | |
| 934 int off_left, off_right; | |
| 935 int n; | |
| 936 int p_lines; | |
| 937 int width = 0; | |
| 938 int textwidth; | |
| 939 int new_leftcol; | |
| 940 colnr_T startcol; | |
| 941 colnr_T endcol; | |
| 942 colnr_T prev_skipcol; | |
| 943 | |
| 944 /* | |
| 945 * First make sure that w_topline is valid (after moving the cursor). | |
| 946 */ | |
| 947 update_topline(); | |
| 948 | |
| 949 /* | |
| 950 * Next make sure that w_cline_row is valid. | |
| 951 */ | |
| 952 if (!(curwin->w_valid & VALID_CROW)) | |
| 6441 | 953 curs_rows(curwin); |
| 7 | 954 |
| 955 /* | |
| 956 * Compute the number of virtual columns. | |
| 957 */ | |
| 958 #ifdef FEAT_FOLDING | |
| 959 if (curwin->w_cline_folded) | |
| 960 /* In a folded line the cursor is always in the first column */ | |
| 961 startcol = curwin->w_virtcol = endcol = curwin->w_leftcol; | |
| 962 else | |
| 963 #endif | |
| 964 getvvcol(curwin, &curwin->w_cursor, | |
| 965 &startcol, &(curwin->w_virtcol), &endcol); | |
| 966 | |
| 967 /* remove '$' from change command when cursor moves onto it */ | |
| 968 if (startcol > dollar_vcol) | |
| 3318 | 969 dollar_vcol = -1; |
| 7 | 970 |
| 971 extra = curwin_col_off(); | |
| 972 curwin->w_wcol = curwin->w_virtcol + extra; | |
| 973 endcol += extra; | |
| 974 | |
| 975 /* | |
| 976 * Now compute w_wrow, counting screen lines from w_cline_row. | |
| 977 */ | |
| 978 curwin->w_wrow = curwin->w_cline_row; | |
| 979 | |
| 980 textwidth = W_WIDTH(curwin) - extra; | |
| 981 if (textwidth <= 0) | |
| 982 { | |
| 983 /* No room for text, put cursor in last char of window. */ | |
| 984 curwin->w_wcol = W_WIDTH(curwin) - 1; | |
| 985 curwin->w_wrow = curwin->w_height - 1; | |
| 986 } | |
| 987 else if (curwin->w_p_wrap | |
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988 #ifdef FEAT_WINDOWS |
| 7 | 989 && curwin->w_width != 0 |
| 990 #endif | |
| 991 ) | |
| 992 { | |
| 993 width = textwidth + curwin_col_off2(); | |
| 994 | |
| 995 /* long line wrapping, adjust curwin->w_wrow */ | |
| 996 if (curwin->w_wcol >= W_WIDTH(curwin)) | |
| 997 { | |
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998 /* this same formula is used in validate_cursor_col() */ |
| 7 | 999 n = (curwin->w_wcol - W_WIDTH(curwin)) / width + 1; |
| 1000 curwin->w_wcol -= n * width; | |
| 1001 curwin->w_wrow += n; | |
| 1002 | |
| 1003 #ifdef FEAT_LINEBREAK | |
| 1004 /* When cursor wraps to first char of next line in Insert | |
| 1005 * mode, the 'showbreak' string isn't shown, backup to first | |
| 1006 * column */ | |
| 1007 if (*p_sbr && *ml_get_cursor() == NUL | |
| 1008 && curwin->w_wcol == (int)vim_strsize(p_sbr)) | |
| 1009 curwin->w_wcol = 0; | |
| 1010 #endif | |
| 1011 } | |
| 1012 } | |
| 1013 | |
| 1014 /* No line wrapping: compute curwin->w_leftcol if scrolling is on and line | |
| 1015 * is not folded. | |
| 1016 * If scrolling is off, curwin->w_leftcol is assumed to be 0 */ | |
| 3263 | 1017 else if (may_scroll |
| 7 | 1018 #ifdef FEAT_FOLDING |
| 1019 && !curwin->w_cline_folded | |
| 1020 #endif | |
| 1021 ) | |
| 1022 { | |
| 1023 /* | |
| 1024 * If Cursor is left of the screen, scroll rightwards. | |
| 1025 * If Cursor is right of the screen, scroll leftwards | |
| 1026 * If we get closer to the edge than 'sidescrolloff', scroll a little | |
| 1027 * extra | |
| 1028 */ | |
| 1029 off_left = (int)startcol - (int)curwin->w_leftcol - p_siso; | |
| 1030 off_right = (int)endcol - (int)(curwin->w_leftcol + W_WIDTH(curwin) | |
| 1031 - p_siso) + 1; | |
| 1032 if (off_left < 0 || off_right > 0) | |
| 1033 { | |
| 1034 if (off_left < 0) | |
| 1035 diff = -off_left; | |
| 1036 else | |
| 1037 diff = off_right; | |
| 1038 | |
| 1039 /* When far off or not enough room on either side, put cursor in | |
| 1040 * middle of window. */ | |
| 1041 if (p_ss == 0 || diff >= textwidth / 2 || off_right >= off_left) | |
| 1042 new_leftcol = curwin->w_wcol - extra - textwidth / 2; | |
| 1043 else | |
| 1044 { | |
| 1045 if (diff < p_ss) | |
| 1046 diff = p_ss; | |
| 1047 if (off_left < 0) | |
| 1048 new_leftcol = curwin->w_leftcol - diff; | |
| 1049 else | |
| 1050 new_leftcol = curwin->w_leftcol + diff; | |
| 1051 } | |
| 1052 if (new_leftcol < 0) | |
| 1053 new_leftcol = 0; | |
| 1054 if (new_leftcol != (int)curwin->w_leftcol) | |
| 1055 { | |
| 1056 curwin->w_leftcol = new_leftcol; | |
| 1057 /* screen has to be redrawn with new curwin->w_leftcol */ | |
| 1058 redraw_later(NOT_VALID); | |
| 1059 } | |
| 1060 } | |
| 1061 curwin->w_wcol -= curwin->w_leftcol; | |
| 1062 } | |
| 1063 else if (curwin->w_wcol > (int)curwin->w_leftcol) | |
| 1064 curwin->w_wcol -= curwin->w_leftcol; | |
| 1065 else | |
| 1066 curwin->w_wcol = 0; | |
| 1067 | |
| 1068 #ifdef FEAT_DIFF | |
| 1069 /* Skip over filler lines. At the top use w_topfill, there | |
| 1070 * may be some filler lines above the window. */ | |
| 1071 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 1072 curwin->w_wrow += curwin->w_topfill; | |
| 1073 else | |
| 1074 curwin->w_wrow += diff_check_fill(curwin, curwin->w_cursor.lnum); | |
| 1075 #endif | |
| 1076 | |
| 1077 prev_skipcol = curwin->w_skipcol; | |
| 1078 | |
| 1079 p_lines = 0; | |
| 1080 if ((curwin->w_wrow >= curwin->w_height | |
| 1081 || ((prev_skipcol > 0 | |
| 1082 || curwin->w_wrow + p_so >= curwin->w_height) | |
| 1083 && (p_lines = | |
| 1084 #ifdef FEAT_DIFF | |
| 1085 plines_win_nofill | |
| 1086 #else | |
| 1087 plines_win | |
| 1088 #endif | |
| 1089 (curwin, curwin->w_cursor.lnum, FALSE)) | |
| 1090 - 1 >= curwin->w_height)) | |
| 1091 && curwin->w_height != 0 | |
| 1092 && curwin->w_cursor.lnum == curwin->w_topline | |
| 1093 && width > 0 | |
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1094 #ifdef FEAT_WINDOWS |
| 7 | 1095 && curwin->w_width != 0 |
| 1096 #endif | |
| 1097 ) | |
| 1098 { | |
| 1099 /* Cursor past end of screen. Happens with a single line that does | |
| 1100 * not fit on screen. Find a skipcol to show the text around the | |
| 1101 * cursor. Avoid scrolling all the time. compute value of "extra": | |
| 1102 * 1: Less than "p_so" lines above | |
| 1103 * 2: Less than "p_so" lines below | |
| 1104 * 3: both of them */ | |
| 1105 extra = 0; | |
| 1106 if (curwin->w_skipcol + p_so * width > curwin->w_virtcol) | |
| 1107 extra = 1; | |
| 1108 /* Compute last display line of the buffer line that we want at the | |
| 1109 * bottom of the window. */ | |
| 1110 if (p_lines == 0) | |
| 1111 p_lines = plines_win(curwin, curwin->w_cursor.lnum, FALSE); | |
| 1112 --p_lines; | |
| 1113 if (p_lines > curwin->w_wrow + p_so) | |
| 1114 n = curwin->w_wrow + p_so; | |
| 1115 else | |
| 1116 n = p_lines; | |
| 1117 if ((colnr_T)n >= curwin->w_height + curwin->w_skipcol / width) | |
| 1118 extra += 2; | |
| 1119 | |
| 1120 if (extra == 3 || p_lines < p_so * 2) | |
| 1121 { | |
| 1122 /* not enough room for 'scrolloff', put cursor in the middle */ | |
| 1123 n = curwin->w_virtcol / width; | |
| 1124 if (n > curwin->w_height / 2) | |
| 1125 n -= curwin->w_height / 2; | |
| 1126 else | |
| 1127 n = 0; | |
| 1128 /* don't skip more than necessary */ | |
| 1129 if (n > p_lines - curwin->w_height + 1) | |
| 1130 n = p_lines - curwin->w_height + 1; | |
| 1131 curwin->w_skipcol = n * width; | |
| 1132 } | |
| 1133 else if (extra == 1) | |
| 1134 { | |
| 1135 /* less then 'scrolloff' lines above, decrease skipcol */ | |
| 1136 extra = (curwin->w_skipcol + p_so * width - curwin->w_virtcol | |
| 1137 + width - 1) / width; | |
| 1138 if (extra > 0) | |
| 1139 { | |
| 1140 if ((colnr_T)(extra * width) > curwin->w_skipcol) | |
| 1141 extra = curwin->w_skipcol / width; | |
| 1142 curwin->w_skipcol -= extra * width; | |
| 1143 } | |
| 1144 } | |
| 1145 else if (extra == 2) | |
| 1146 { | |
| 1147 /* less then 'scrolloff' lines below, increase skipcol */ | |
| 1148 endcol = (n - curwin->w_height + 1) * width; | |
| 1149 while (endcol > curwin->w_virtcol) | |
| 1150 endcol -= width; | |
| 1151 if (endcol > curwin->w_skipcol) | |
| 1152 curwin->w_skipcol = endcol; | |
| 1153 } | |
| 1154 | |
| 1155 curwin->w_wrow -= curwin->w_skipcol / width; | |
| 1156 if (curwin->w_wrow >= curwin->w_height) | |
| 1157 { | |
| 1158 /* small window, make sure cursor is in it */ | |
| 1159 extra = curwin->w_wrow - curwin->w_height + 1; | |
| 1160 curwin->w_skipcol += extra * width; | |
| 1161 curwin->w_wrow -= extra; | |
| 1162 } | |
| 1163 | |
| 1164 extra = ((int)prev_skipcol - (int)curwin->w_skipcol) / width; | |
| 1165 if (extra > 0) | |
| 1166 win_ins_lines(curwin, 0, extra, FALSE, FALSE); | |
| 1167 else if (extra < 0) | |
| 1168 win_del_lines(curwin, 0, -extra, FALSE, FALSE); | |
| 1169 } | |
| 1170 else | |
| 1171 curwin->w_skipcol = 0; | |
| 1172 if (prev_skipcol != curwin->w_skipcol) | |
| 1173 redraw_later(NOT_VALID); | |
| 1174 | |
| 740 | 1175 #ifdef FEAT_SYN_HL |
| 5749 | 1176 /* Redraw when w_virtcol changes and 'cursorcolumn' is set */ |
| 1177 if (curwin->w_p_cuc && (curwin->w_valid & VALID_VIRTCOL) == 0 | |
| 1178 # ifdef FEAT_INS_EXPAND | |
| 1179 && !pum_visible() | |
| 1180 # endif | |
| 1181 ) | |
| 1182 redraw_later(SOME_VALID); | |
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1183 #endif |
| 740 | 1184 |
| 7 | 1185 curwin->w_valid |= VALID_WCOL|VALID_WROW|VALID_VIRTCOL; |
| 1186 } | |
| 1187 | |
| 1188 /* | |
| 1189 * Scroll the current window down by "line_count" logical lines. "CTRL-Y" | |
| 1190 */ | |
| 1191 void | |
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1192 scrolldown( |
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1193 long line_count, |
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1194 int byfold UNUSED) /* TRUE: count a closed fold as one line */ |
| 7 | 1195 { |
| 1196 long done = 0; /* total # of physical lines done */ | |
| 1197 int wrow; | |
| 1198 int moved = FALSE; | |
| 1199 | |
| 1200 #ifdef FEAT_FOLDING | |
| 1201 linenr_T first; | |
| 1202 | |
| 1203 /* Make sure w_topline is at the first of a sequence of folded lines. */ | |
| 1204 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 1205 #endif | |
| 1206 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1207 while (line_count-- > 0) | |
| 1208 { | |
| 1209 #ifdef FEAT_DIFF | |
| 1980 | 1210 if (curwin->w_topfill < diff_check(curwin, curwin->w_topline) |
| 1211 && curwin->w_topfill < curwin->w_height - 1) | |
| 7 | 1212 { |
| 1213 ++curwin->w_topfill; | |
| 1214 ++done; | |
| 1215 } | |
| 1216 else | |
| 1217 #endif | |
| 1218 { | |
| 1219 if (curwin->w_topline == 1) | |
| 1220 break; | |
| 1221 --curwin->w_topline; | |
| 1222 #ifdef FEAT_DIFF | |
| 1223 curwin->w_topfill = 0; | |
| 1224 #endif | |
| 1225 #ifdef FEAT_FOLDING | |
| 1226 /* A sequence of folded lines only counts for one logical line */ | |
| 1227 if (hasFolding(curwin->w_topline, &first, NULL)) | |
| 1228 { | |
| 1229 ++done; | |
| 1230 if (!byfold) | |
| 1231 line_count -= curwin->w_topline - first - 1; | |
| 1232 curwin->w_botline -= curwin->w_topline - first; | |
| 1233 curwin->w_topline = first; | |
| 1234 } | |
| 1235 else | |
| 1236 #endif | |
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1237 done += PLINES_NOFILL(curwin->w_topline); |
| 7 | 1238 } |
| 1239 --curwin->w_botline; /* approximate w_botline */ | |
| 1240 invalidate_botline(); | |
| 1241 } | |
| 1242 curwin->w_wrow += done; /* keep w_wrow updated */ | |
| 1243 curwin->w_cline_row += done; /* keep w_cline_row updated */ | |
| 1244 | |
| 1245 #ifdef FEAT_DIFF | |
| 1246 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 1247 curwin->w_cline_row = 0; | |
| 1248 check_topfill(curwin, TRUE); | |
| 1249 #endif | |
| 1250 | |
| 1251 /* | |
| 1252 * Compute the row number of the last row of the cursor line | |
| 1253 * and move the cursor onto the displayed part of the window. | |
| 1254 */ | |
| 1255 wrow = curwin->w_wrow; | |
| 1256 if (curwin->w_p_wrap | |
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1257 #ifdef FEAT_WINDOWS |
| 7 | 1258 && curwin->w_width != 0 |
| 1259 #endif | |
| 1260 ) | |
| 1261 { | |
| 1262 validate_virtcol(); | |
| 1263 validate_cheight(); | |
| 1264 wrow += curwin->w_cline_height - 1 - | |
| 1265 curwin->w_virtcol / W_WIDTH(curwin); | |
| 1266 } | |
| 1267 while (wrow >= curwin->w_height && curwin->w_cursor.lnum > 1) | |
| 1268 { | |
| 1269 #ifdef FEAT_FOLDING | |
| 1270 if (hasFolding(curwin->w_cursor.lnum, &first, NULL)) | |
| 1271 { | |
| 1272 --wrow; | |
| 1273 if (first == 1) | |
| 1274 curwin->w_cursor.lnum = 1; | |
| 1275 else | |
| 1276 curwin->w_cursor.lnum = first - 1; | |
| 1277 } | |
| 1278 else | |
| 1279 #endif | |
| 1280 wrow -= plines(curwin->w_cursor.lnum--); | |
| 1281 curwin->w_valid &= | |
| 1282 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
| 1283 moved = TRUE; | |
| 1284 } | |
| 1285 if (moved) | |
| 1286 { | |
| 1287 #ifdef FEAT_FOLDING | |
| 1288 /* Move cursor to first line of closed fold. */ | |
| 1289 foldAdjustCursor(); | |
| 1290 #endif | |
| 1291 coladvance(curwin->w_curswant); | |
| 1292 } | |
| 1293 } | |
| 1294 | |
| 1295 /* | |
| 1296 * Scroll the current window up by "line_count" logical lines. "CTRL-E" | |
| 1297 */ | |
| 1298 void | |
|
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1299 scrollup( |
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1300 long line_count, |
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1301 int byfold UNUSED) /* TRUE: count a closed fold as one line */ |
| 7 | 1302 { |
| 1303 #if defined(FEAT_FOLDING) || defined(FEAT_DIFF) | |
| 1304 linenr_T lnum; | |
| 1305 | |
| 1306 if ( | |
| 1307 # ifdef FEAT_FOLDING | |
| 1308 (byfold && hasAnyFolding(curwin)) | |
| 1309 # ifdef FEAT_DIFF | |
| 1310 || | |
| 1311 # endif | |
| 1312 # endif | |
| 1313 # ifdef FEAT_DIFF | |
| 1314 curwin->w_p_diff | |
| 1315 # endif | |
| 1316 ) | |
| 1317 { | |
| 1318 /* count each sequence of folded lines as one logical line */ | |
| 1319 lnum = curwin->w_topline; | |
| 1320 while (line_count--) | |
| 1321 { | |
| 1322 # ifdef FEAT_DIFF | |
| 1323 if (curwin->w_topfill > 0) | |
| 1324 --curwin->w_topfill; | |
| 1325 else | |
| 1326 # endif | |
| 1327 { | |
| 1328 # ifdef FEAT_FOLDING | |
| 1329 if (byfold) | |
| 1330 (void)hasFolding(lnum, NULL, &lnum); | |
| 1331 # endif | |
| 1332 if (lnum >= curbuf->b_ml.ml_line_count) | |
| 1333 break; | |
| 1334 ++lnum; | |
| 1335 # ifdef FEAT_DIFF | |
| 1336 curwin->w_topfill = diff_check_fill(curwin, lnum); | |
| 1337 # endif | |
| 1338 } | |
| 1339 } | |
| 1340 /* approximate w_botline */ | |
| 1341 curwin->w_botline += lnum - curwin->w_topline; | |
| 1342 curwin->w_topline = lnum; | |
| 1343 } | |
| 1344 else | |
| 1345 #endif | |
| 1346 { | |
| 1347 curwin->w_topline += line_count; | |
| 1348 curwin->w_botline += line_count; /* approximate w_botline */ | |
| 1349 } | |
| 1350 | |
| 1351 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
| 1352 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
| 1353 if (curwin->w_botline > curbuf->b_ml.ml_line_count + 1) | |
| 1354 curwin->w_botline = curbuf->b_ml.ml_line_count + 1; | |
| 1355 | |
| 1356 #ifdef FEAT_DIFF | |
| 1357 check_topfill(curwin, FALSE); | |
| 1358 #endif | |
| 1359 | |
| 1360 #ifdef FEAT_FOLDING | |
| 1361 if (hasAnyFolding(curwin)) | |
| 1362 /* Make sure w_topline is at the first of a sequence of folded lines. */ | |
| 1363 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 1364 #endif | |
| 1365 | |
| 1366 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1367 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 1368 { | |
| 1369 curwin->w_cursor.lnum = curwin->w_topline; | |
| 1370 curwin->w_valid &= | |
| 1371 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
| 1372 coladvance(curwin->w_curswant); | |
| 1373 } | |
| 1374 } | |
| 1375 | |
| 1376 #ifdef FEAT_DIFF | |
| 1377 /* | |
| 1378 * Don't end up with too many filler lines in the window. | |
| 1379 */ | |
| 1380 void | |
|
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1381 check_topfill( |
|
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1382 win_T *wp, |
|
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|
1383 int down) /* when TRUE scroll down when not enough space */ |
| 7 | 1384 { |
| 1385 int n; | |
| 1386 | |
| 1387 if (wp->w_topfill > 0) | |
| 1388 { | |
| 1389 n = plines_win_nofill(wp, wp->w_topline, TRUE); | |
| 1390 if (wp->w_topfill + n > wp->w_height) | |
| 1391 { | |
| 1392 if (down && wp->w_topline > 1) | |
| 1393 { | |
| 1394 --wp->w_topline; | |
| 1395 wp->w_topfill = 0; | |
| 1396 } | |
| 1397 else | |
| 1398 { | |
| 1399 wp->w_topfill = wp->w_height - n; | |
| 1400 if (wp->w_topfill < 0) | |
| 1401 wp->w_topfill = 0; | |
| 1402 } | |
| 1403 } | |
| 1404 } | |
| 1405 } | |
| 1406 | |
| 1407 /* | |
| 1408 * Use as many filler lines as possible for w_topline. Make sure w_topline | |
| 1409 * is still visible. | |
| 1410 */ | |
| 1411 static void | |
|
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|
1412 max_topfill(void) |
| 7 | 1413 { |
| 1414 int n; | |
| 1415 | |
| 1416 n = plines_nofill(curwin->w_topline); | |
| 1417 if (n >= curwin->w_height) | |
| 1418 curwin->w_topfill = 0; | |
| 1419 else | |
| 1420 { | |
| 1421 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 1422 if (curwin->w_topfill + n > curwin->w_height) | |
| 1423 curwin->w_topfill = curwin->w_height - n; | |
| 1424 } | |
| 1425 } | |
| 1426 #endif | |
| 1427 | |
| 1428 #if defined(FEAT_INS_EXPAND) || defined(PROTO) | |
| 1429 /* | |
| 1430 * Scroll the screen one line down, but don't do it if it would move the | |
| 1431 * cursor off the screen. | |
| 1432 */ | |
| 1433 void | |
|
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|
1434 scrolldown_clamp(void) |
| 7 | 1435 { |
| 1436 int end_row; | |
| 1437 #ifdef FEAT_DIFF | |
| 1438 int can_fill = (curwin->w_topfill | |
| 1439 < diff_check_fill(curwin, curwin->w_topline)); | |
| 1440 #endif | |
| 1441 | |
| 1442 if (curwin->w_topline <= 1 | |
| 1443 #ifdef FEAT_DIFF | |
| 1444 && !can_fill | |
| 1445 #endif | |
| 1446 ) | |
| 1447 return; | |
| 1448 | |
| 1449 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1450 | |
| 1451 /* | |
| 1452 * Compute the row number of the last row of the cursor line | |
| 1453 * and make sure it doesn't go off the screen. Make sure the cursor | |
| 1454 * doesn't go past 'scrolloff' lines from the screen end. | |
| 1455 */ | |
| 1456 end_row = curwin->w_wrow; | |
| 1457 #ifdef FEAT_DIFF | |
| 1458 if (can_fill) | |
| 1459 ++end_row; | |
| 1460 else | |
| 1461 end_row += plines_nofill(curwin->w_topline - 1); | |
| 1462 #else | |
| 1463 end_row += plines(curwin->w_topline - 1); | |
| 1464 #endif | |
| 1465 if (curwin->w_p_wrap | |
|
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1466 #ifdef FEAT_WINDOWS |
| 7 | 1467 && curwin->w_width != 0 |
| 1468 #endif | |
| 1469 ) | |
| 1470 { | |
| 1471 validate_cheight(); | |
| 1472 validate_virtcol(); | |
| 1473 end_row += curwin->w_cline_height - 1 - | |
| 1474 curwin->w_virtcol / W_WIDTH(curwin); | |
| 1475 } | |
| 1476 if (end_row < curwin->w_height - p_so) | |
| 1477 { | |
| 1478 #ifdef FEAT_DIFF | |
| 1479 if (can_fill) | |
| 1480 { | |
| 1481 ++curwin->w_topfill; | |
| 1482 check_topfill(curwin, TRUE); | |
| 1483 } | |
| 1484 else | |
| 1485 { | |
| 1486 --curwin->w_topline; | |
| 1487 curwin->w_topfill = 0; | |
| 1488 } | |
| 1489 #else | |
| 1490 --curwin->w_topline; | |
| 1491 #endif | |
| 1492 #ifdef FEAT_FOLDING | |
| 7009 | 1493 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
| 7 | 1494 #endif |
| 1495 --curwin->w_botline; /* approximate w_botline */ | |
| 1496 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1497 } | |
| 1498 } | |
| 1499 | |
| 1500 /* | |
| 1501 * Scroll the screen one line up, but don't do it if it would move the cursor | |
| 1502 * off the screen. | |
| 1503 */ | |
| 1504 void | |
|
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changeset
|
1505 scrollup_clamp(void) |
| 7 | 1506 { |
| 1507 int start_row; | |
| 1508 | |
| 1509 if (curwin->w_topline == curbuf->b_ml.ml_line_count | |
| 1510 #ifdef FEAT_DIFF | |
| 1511 && curwin->w_topfill == 0 | |
| 1512 #endif | |
| 1513 ) | |
| 1514 return; | |
| 1515 | |
| 1516 validate_cursor(); /* w_wrow needs to be valid */ | |
| 1517 | |
| 1518 /* | |
| 1519 * Compute the row number of the first row of the cursor line | |
| 1520 * and make sure it doesn't go off the screen. Make sure the cursor | |
| 1521 * doesn't go before 'scrolloff' lines from the screen start. | |
| 1522 */ | |
| 1523 #ifdef FEAT_DIFF | |
| 1524 start_row = curwin->w_wrow - plines_nofill(curwin->w_topline) | |
| 1525 - curwin->w_topfill; | |
| 1526 #else | |
| 1527 start_row = curwin->w_wrow - plines(curwin->w_topline); | |
| 1528 #endif | |
| 1529 if (curwin->w_p_wrap | |
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1530 #ifdef FEAT_WINDOWS |
| 7 | 1531 && curwin->w_width != 0 |
| 1532 #endif | |
| 1533 ) | |
| 1534 { | |
| 1535 validate_virtcol(); | |
| 1536 start_row -= curwin->w_virtcol / W_WIDTH(curwin); | |
| 1537 } | |
| 1538 if (start_row >= p_so) | |
| 1539 { | |
| 1540 #ifdef FEAT_DIFF | |
| 1541 if (curwin->w_topfill > 0) | |
| 1542 --curwin->w_topfill; | |
| 1543 else | |
| 1544 #endif | |
| 36 | 1545 { |
| 1546 #ifdef FEAT_FOLDING | |
| 1547 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
| 1548 #endif | |
| 7 | 1549 ++curwin->w_topline; |
| 36 | 1550 } |
| 7 | 1551 ++curwin->w_botline; /* approximate w_botline */ |
| 1552 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1553 } | |
| 1554 } | |
| 1555 #endif /* FEAT_INS_EXPAND */ | |
| 1556 | |
| 1557 /* | |
| 1558 * Add one line above "lp->lnum". This can be a filler line, a closed fold or | |
| 1559 * a (wrapped) text line. Uses and sets "lp->fill". | |
| 1560 * Returns the height of the added line in "lp->height". | |
|
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1561 * Lines above the first one are incredibly high: MAXCOL. |
| 7 | 1562 */ |
| 1563 static void | |
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1564 topline_back(lineoff_T *lp) |
| 7 | 1565 { |
| 1566 #ifdef FEAT_DIFF | |
| 1567 if (lp->fill < diff_check_fill(curwin, lp->lnum)) | |
| 1568 { | |
| 1569 /* Add a filler line. */ | |
| 1570 ++lp->fill; | |
| 1571 lp->height = 1; | |
| 1572 } | |
| 1573 else | |
| 1574 #endif | |
| 1575 { | |
| 1576 --lp->lnum; | |
| 1577 #ifdef FEAT_DIFF | |
| 1578 lp->fill = 0; | |
| 1579 #endif | |
| 1580 if (lp->lnum < 1) | |
| 1581 lp->height = MAXCOL; | |
| 1582 else | |
| 1583 #ifdef FEAT_FOLDING | |
| 1584 if (hasFolding(lp->lnum, &lp->lnum, NULL)) | |
| 1585 /* Add a closed fold */ | |
| 1586 lp->height = 1; | |
| 1587 else | |
| 1588 #endif | |
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1589 lp->height = PLINES_NOFILL(lp->lnum); |
| 7 | 1590 } |
| 1591 } | |
| 1592 | |
| 1593 /* | |
| 1594 * Add one line below "lp->lnum". This can be a filler line, a closed fold or | |
| 1595 * a (wrapped) text line. Uses and sets "lp->fill". | |
| 1596 * Returns the height of the added line in "lp->height". | |
| 1597 * Lines below the last one are incredibly high. | |
| 1598 */ | |
| 1599 static void | |
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diff
changeset
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1600 botline_forw(lineoff_T *lp) |
| 7 | 1601 { |
| 1602 #ifdef FEAT_DIFF | |
| 1603 if (lp->fill < diff_check_fill(curwin, lp->lnum + 1)) | |
| 1604 { | |
| 1605 /* Add a filler line. */ | |
| 1606 ++lp->fill; | |
| 1607 lp->height = 1; | |
| 1608 } | |
| 1609 else | |
| 1610 #endif | |
| 1611 { | |
| 1612 ++lp->lnum; | |
| 1613 #ifdef FEAT_DIFF | |
| 1614 lp->fill = 0; | |
| 1615 #endif | |
| 1616 if (lp->lnum > curbuf->b_ml.ml_line_count) | |
| 1617 lp->height = MAXCOL; | |
| 1618 else | |
| 1619 #ifdef FEAT_FOLDING | |
| 1620 if (hasFolding(lp->lnum, NULL, &lp->lnum)) | |
| 1621 /* Add a closed fold */ | |
| 1622 lp->height = 1; | |
| 1623 else | |
| 1624 #endif | |
| 1625 { | |
|
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diff
changeset
|
1626 lp->height = PLINES_NOFILL(lp->lnum); |
| 7 | 1627 } |
| 1628 } | |
| 1629 } | |
| 1630 | |
| 1631 #ifdef FEAT_DIFF | |
| 1632 /* | |
| 1633 * Switch from including filler lines below lp->lnum to including filler | |
| 1634 * lines above loff.lnum + 1. This keeps pointing to the same line. | |
| 1635 * When there are no filler lines nothing changes. | |
| 1636 */ | |
| 1637 static void | |
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diff
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1638 botline_topline(lineoff_T *lp) |
| 7 | 1639 { |
| 1640 if (lp->fill > 0) | |
| 1641 { | |
| 1642 ++lp->lnum; | |
| 1643 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
| 1644 } | |
| 1645 } | |
| 1646 | |
| 1647 /* | |
| 1648 * Switch from including filler lines above lp->lnum to including filler | |
| 1649 * lines below loff.lnum - 1. This keeps pointing to the same line. | |
| 1650 * When there are no filler lines nothing changes. | |
| 1651 */ | |
| 1652 static void | |
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1653 topline_botline(lineoff_T *lp) |
| 7 | 1654 { |
| 1655 if (lp->fill > 0) | |
| 1656 { | |
| 1657 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
| 1658 --lp->lnum; | |
| 1659 } | |
| 1660 } | |
| 1661 #endif | |
| 1662 | |
| 1663 /* | |
| 1664 * Recompute topline to put the cursor at the top of the window. | |
| 1665 * Scroll at least "min_scroll" lines. | |
| 1666 * If "always" is TRUE, always set topline (for "zt"). | |
| 1667 */ | |
| 1668 void | |
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1669 scroll_cursor_top(int min_scroll, int always) |
| 7 | 1670 { |
| 1671 int scrolled = 0; | |
| 1672 int extra = 0; | |
| 1673 int used; | |
| 1674 int i; | |
| 1675 linenr_T top; /* just above displayed lines */ | |
| 1676 linenr_T bot; /* just below displayed lines */ | |
| 1677 linenr_T old_topline = curwin->w_topline; | |
| 1678 #ifdef FEAT_DIFF | |
| 1679 linenr_T old_topfill = curwin->w_topfill; | |
| 1680 #endif | |
| 1681 linenr_T new_topline; | |
| 1682 int off = p_so; | |
| 1683 | |
| 1684 #ifdef FEAT_MOUSE | |
| 1685 if (mouse_dragging > 0) | |
| 1686 off = mouse_dragging - 1; | |
| 1687 #endif | |
| 1688 | |
| 1689 /* | |
| 1690 * Decrease topline until: | |
| 1691 * - it has become 1 | |
| 1692 * - (part of) the cursor line is moved off the screen or | |
| 1693 * - moved at least 'scrolljump' lines and | |
| 1694 * - at least 'scrolloff' lines above and below the cursor | |
| 1695 */ | |
| 1696 validate_cheight(); | |
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1697 used = curwin->w_cline_height; /* includes filler lines above */ |
| 7 | 1698 if (curwin->w_cursor.lnum < curwin->w_topline) |
| 1699 scrolled = used; | |
| 1700 | |
| 1701 #ifdef FEAT_FOLDING | |
| 1702 if (hasFolding(curwin->w_cursor.lnum, &top, &bot)) | |
| 1703 { | |
| 1704 --top; | |
| 1705 ++bot; | |
| 1706 } | |
| 1707 else | |
| 1708 #endif | |
| 1709 { | |
| 1710 top = curwin->w_cursor.lnum - 1; | |
| 1711 bot = curwin->w_cursor.lnum + 1; | |
| 1712 } | |
| 1713 new_topline = top + 1; | |
| 1714 | |
| 1715 #ifdef FEAT_DIFF | |
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1716 /* "used" already contains the number of filler lines above, don't add it |
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1717 * again. |
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1718 * Hide filler lines above cursor line by adding them to "extra". */ |
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1719 extra += diff_check_fill(curwin, curwin->w_cursor.lnum); |
| 7 | 1720 #endif |
| 1721 | |
| 1722 /* | |
| 1723 * Check if the lines from "top" to "bot" fit in the window. If they do, | |
| 1724 * set new_topline and advance "top" and "bot" to include more lines. | |
| 1725 */ | |
| 1726 while (top > 0) | |
| 1727 { | |
| 1728 #ifdef FEAT_FOLDING | |
| 1729 if (hasFolding(top, &top, NULL)) | |
| 1730 /* count one logical line for a sequence of folded lines */ | |
| 1731 i = 1; | |
| 1732 else | |
| 1733 #endif | |
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1734 i = PLINES_NOFILL(top); |
| 7 | 1735 used += i; |
| 1736 if (extra + i <= off && bot < curbuf->b_ml.ml_line_count) | |
| 1737 { | |
| 1738 #ifdef FEAT_FOLDING | |
| 1739 if (hasFolding(bot, NULL, &bot)) | |
| 1740 /* count one logical line for a sequence of folded lines */ | |
| 1741 ++used; | |
| 1742 else | |
| 1743 #endif | |
| 1744 used += plines(bot); | |
| 1745 } | |
| 1746 if (used > curwin->w_height) | |
| 1747 break; | |
| 1748 if (top < curwin->w_topline) | |
| 1749 scrolled += i; | |
| 1750 | |
| 1751 /* | |
| 1752 * If scrolling is needed, scroll at least 'sj' lines. | |
| 1753 */ | |
| 1754 if ((new_topline >= curwin->w_topline || scrolled > min_scroll) | |
| 1755 && extra >= off) | |
| 1756 break; | |
| 1757 | |
| 1758 extra += i; | |
| 1759 new_topline = top; | |
| 1760 --top; | |
| 1761 ++bot; | |
| 1762 } | |
| 1763 | |
| 1764 /* | |
| 1765 * If we don't have enough space, put cursor in the middle. | |
| 1766 * This makes sure we get the same position when using "k" and "j" | |
| 1767 * in a small window. | |
| 1768 */ | |
| 1769 if (used > curwin->w_height) | |
| 1770 scroll_cursor_halfway(FALSE); | |
| 1771 else | |
| 1772 { | |
| 1773 /* | |
| 1774 * If "always" is FALSE, only adjust topline to a lower value, higher | |
| 1775 * value may happen with wrapping lines | |
| 1776 */ | |
| 1777 if (new_topline < curwin->w_topline || always) | |
| 1778 curwin->w_topline = new_topline; | |
| 1779 if (curwin->w_topline > curwin->w_cursor.lnum) | |
| 1780 curwin->w_topline = curwin->w_cursor.lnum; | |
| 1781 #ifdef FEAT_DIFF | |
| 1782 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 1783 if (curwin->w_topfill > 0 && extra > off) | |
| 1784 { | |
| 1785 curwin->w_topfill -= extra - off; | |
| 1786 if (curwin->w_topfill < 0) | |
| 1787 curwin->w_topfill = 0; | |
| 1788 } | |
| 1789 check_topfill(curwin, FALSE); | |
| 1790 #endif | |
| 1791 if (curwin->w_topline != old_topline | |
| 1792 #ifdef FEAT_DIFF | |
| 1793 || curwin->w_topfill != old_topfill | |
| 1794 #endif | |
| 1795 ) | |
| 1796 curwin->w_valid &= | |
| 1797 ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 1798 curwin->w_valid |= VALID_TOPLINE; | |
| 1799 } | |
| 1800 } | |
| 1801 | |
| 1802 /* | |
| 1803 * Set w_empty_rows and w_filler_rows for window "wp", having used up "used" | |
| 1804 * screen lines for text lines. | |
| 1805 */ | |
| 1806 void | |
|
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|
1807 set_empty_rows(win_T *wp, int used) |
| 7 | 1808 { |
| 1809 #ifdef FEAT_DIFF | |
| 1810 wp->w_filler_rows = 0; | |
| 1811 #endif | |
| 1812 if (used == 0) | |
| 1813 wp->w_empty_rows = 0; /* single line that doesn't fit */ | |
| 1814 else | |
| 1815 { | |
| 1816 wp->w_empty_rows = wp->w_height - used; | |
| 1817 #ifdef FEAT_DIFF | |
| 1818 if (wp->w_botline <= wp->w_buffer->b_ml.ml_line_count) | |
| 1819 { | |
| 1820 wp->w_filler_rows = diff_check_fill(wp, wp->w_botline); | |
| 1821 if (wp->w_empty_rows > wp->w_filler_rows) | |
| 1822 wp->w_empty_rows -= wp->w_filler_rows; | |
| 1823 else | |
| 1824 { | |
| 1825 wp->w_filler_rows = wp->w_empty_rows; | |
| 1826 wp->w_empty_rows = 0; | |
| 1827 } | |
| 1828 } | |
| 1829 #endif | |
| 1830 } | |
| 1831 } | |
| 1832 | |
| 1833 /* | |
| 1834 * Recompute topline to put the cursor at the bottom of the window. | |
| 1835 * Scroll at least "min_scroll" lines. | |
| 1836 * If "set_topbot" is TRUE, set topline and botline first (for "zb"). | |
| 1837 * This is messy stuff!!! | |
| 1838 */ | |
| 1839 void | |
|
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|
1840 scroll_cursor_bot(int min_scroll, int set_topbot) |
| 7 | 1841 { |
| 1842 int used; | |
| 1843 int scrolled = 0; | |
| 1844 int extra = 0; | |
| 1845 int i; | |
| 1846 linenr_T line_count; | |
| 1847 linenr_T old_topline = curwin->w_topline; | |
| 1848 lineoff_T loff; | |
| 1849 lineoff_T boff; | |
| 1850 #ifdef FEAT_DIFF | |
| 1851 int old_topfill = curwin->w_topfill; | |
| 1852 int fill_below_window; | |
| 1853 #endif | |
| 1854 linenr_T old_botline = curwin->w_botline; | |
| 1855 linenr_T old_valid = curwin->w_valid; | |
| 1856 int old_empty_rows = curwin->w_empty_rows; | |
| 1857 linenr_T cln; /* Cursor Line Number */ | |
| 1858 | |
| 1859 cln = curwin->w_cursor.lnum; | |
| 1860 if (set_topbot) | |
| 1861 { | |
| 1862 used = 0; | |
| 1863 curwin->w_botline = cln + 1; | |
| 1864 #ifdef FEAT_DIFF | |
| 1865 loff.fill = 0; | |
| 1866 #endif | |
| 1867 for (curwin->w_topline = curwin->w_botline; | |
| 1868 curwin->w_topline > 1; | |
| 1869 curwin->w_topline = loff.lnum) | |
| 1870 { | |
| 1871 loff.lnum = curwin->w_topline; | |
| 1872 topline_back(&loff); | |
|
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1873 if (loff.height == MAXCOL || used + loff.height > curwin->w_height) |
| 7 | 1874 break; |
| 1875 used += loff.height; | |
| 1876 #ifdef FEAT_DIFF | |
| 1877 curwin->w_topfill = loff.fill; | |
| 1878 #endif | |
| 1879 } | |
| 1880 set_empty_rows(curwin, used); | |
| 1881 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 1882 if (curwin->w_topline != old_topline | |
| 1883 #ifdef FEAT_DIFF | |
| 1884 || curwin->w_topfill != old_topfill | |
| 1885 #endif | |
| 1886 ) | |
| 1887 curwin->w_valid &= ~(VALID_WROW|VALID_CROW); | |
| 1888 } | |
| 1889 else | |
| 1890 validate_botline(); | |
| 1891 | |
| 1892 /* The lines of the cursor line itself are always used. */ | |
| 1893 #ifdef FEAT_DIFF | |
| 1894 used = plines_nofill(cln); | |
| 1895 #else | |
| 1896 validate_cheight(); | |
| 1897 used = curwin->w_cline_height; | |
| 1898 #endif | |
| 1899 | |
| 1900 /* If the cursor is below botline, we will at least scroll by the height | |
| 1901 * of the cursor line. Correct for empty lines, which are really part of | |
| 1902 * botline. */ | |
| 1903 if (cln >= curwin->w_botline) | |
| 1904 { | |
| 1905 scrolled = used; | |
| 1906 if (cln == curwin->w_botline) | |
| 1907 scrolled -= curwin->w_empty_rows; | |
| 1908 } | |
| 1909 | |
| 1910 /* | |
| 1911 * Stop counting lines to scroll when | |
| 1912 * - hitting start of the file | |
| 1913 * - scrolled nothing or at least 'sj' lines | |
| 1914 * - at least 'so' lines below the cursor | |
| 1915 * - lines between botline and cursor have been counted | |
| 1916 */ | |
| 1917 #ifdef FEAT_FOLDING | |
| 1918 if (!hasFolding(curwin->w_cursor.lnum, &loff.lnum, &boff.lnum)) | |
| 1919 #endif | |
| 1920 { | |
| 1921 loff.lnum = cln; | |
| 1922 boff.lnum = cln; | |
| 1923 } | |
| 1924 #ifdef FEAT_DIFF | |
| 1925 loff.fill = 0; | |
| 1926 boff.fill = 0; | |
| 1927 fill_below_window = diff_check_fill(curwin, curwin->w_botline) | |
| 1928 - curwin->w_filler_rows; | |
| 1929 #endif | |
| 1930 | |
| 1931 while (loff.lnum > 1) | |
| 1932 { | |
| 1933 /* Stop when scrolled nothing or at least "min_scroll", found "extra" | |
| 1934 * context for 'scrolloff' and counted all lines below the window. */ | |
| 1935 if ((((scrolled <= 0 || scrolled >= min_scroll) | |
| 1936 && extra >= ( | |
| 1937 #ifdef FEAT_MOUSE | |
| 1121 | 1938 mouse_dragging > 0 ? mouse_dragging - 1 : |
| 7 | 1939 #endif |
| 1940 p_so)) | |
| 1941 || boff.lnum + 1 > curbuf->b_ml.ml_line_count) | |
| 1942 && loff.lnum <= curwin->w_botline | |
| 1943 #ifdef FEAT_DIFF | |
| 1944 && (loff.lnum < curwin->w_botline | |
| 1945 || loff.fill >= fill_below_window) | |
| 1946 #endif | |
| 1947 ) | |
| 1948 break; | |
| 1949 | |
| 1950 /* Add one line above */ | |
| 1951 topline_back(&loff); | |
|
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1952 if (loff.height == MAXCOL) |
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1953 used = MAXCOL; |
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1954 else |
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1955 used += loff.height; |
| 7 | 1956 if (used > curwin->w_height) |
| 1957 break; | |
| 1958 if (loff.lnum >= curwin->w_botline | |
| 1959 #ifdef FEAT_DIFF | |
| 1960 && (loff.lnum > curwin->w_botline | |
| 1961 || loff.fill <= fill_below_window) | |
| 1962 #endif | |
| 1963 ) | |
| 1964 { | |
| 1965 /* Count screen lines that are below the window. */ | |
| 1966 scrolled += loff.height; | |
| 1967 if (loff.lnum == curwin->w_botline | |
| 1968 #ifdef FEAT_DIFF | |
| 1969 && boff.fill == 0 | |
| 1970 #endif | |
| 1971 ) | |
| 1972 scrolled -= curwin->w_empty_rows; | |
| 1973 } | |
| 1974 | |
| 1975 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
| 1976 { | |
| 1977 /* Add one line below */ | |
| 1978 botline_forw(&boff); | |
| 1979 used += boff.height; | |
| 1980 if (used > curwin->w_height) | |
| 1981 break; | |
| 1982 if (extra < ( | |
| 1983 #ifdef FEAT_MOUSE | |
| 1984 mouse_dragging > 0 ? mouse_dragging - 1 : | |
| 1985 #endif | |
| 1986 p_so) || scrolled < min_scroll) | |
| 1987 { | |
| 1988 extra += boff.height; | |
| 1989 if (boff.lnum >= curwin->w_botline | |
| 1990 #ifdef FEAT_DIFF | |
| 1991 || (boff.lnum + 1 == curwin->w_botline | |
| 1992 && boff.fill > curwin->w_filler_rows) | |
| 1993 #endif | |
| 1994 ) | |
| 1995 { | |
| 1996 /* Count screen lines that are below the window. */ | |
| 1997 scrolled += boff.height; | |
| 1998 if (boff.lnum == curwin->w_botline | |
| 1999 #ifdef FEAT_DIFF | |
| 2000 && boff.fill == 0 | |
| 2001 #endif | |
| 2002 ) | |
| 2003 scrolled -= curwin->w_empty_rows; | |
| 2004 } | |
| 2005 } | |
| 2006 } | |
| 2007 } | |
| 2008 | |
| 2009 /* curwin->w_empty_rows is larger, no need to scroll */ | |
| 2010 if (scrolled <= 0) | |
| 2011 line_count = 0; | |
| 2012 /* more than a screenfull, don't scroll but redraw */ | |
| 2013 else if (used > curwin->w_height) | |
| 2014 line_count = used; | |
| 2015 /* scroll minimal number of lines */ | |
| 2016 else | |
| 2017 { | |
| 2018 line_count = 0; | |
| 2019 #ifdef FEAT_DIFF | |
| 2020 boff.fill = curwin->w_topfill; | |
| 2021 #endif | |
| 2022 boff.lnum = curwin->w_topline - 1; | |
| 2023 for (i = 0; i < scrolled && boff.lnum < curwin->w_botline; ) | |
| 2024 { | |
| 2025 botline_forw(&boff); | |
| 2026 i += boff.height; | |
| 2027 ++line_count; | |
| 2028 } | |
| 2029 if (i < scrolled) /* below curwin->w_botline, don't scroll */ | |
| 2030 line_count = 9999; | |
| 2031 } | |
| 2032 | |
| 2033 /* | |
| 2034 * Scroll up if the cursor is off the bottom of the screen a bit. | |
| 2035 * Otherwise put it at 1/2 of the screen. | |
| 2036 */ | |
| 2037 if (line_count >= curwin->w_height && line_count > min_scroll) | |
| 2038 scroll_cursor_halfway(FALSE); | |
| 2039 else | |
| 2040 scrollup(line_count, TRUE); | |
| 2041 | |
| 2042 /* | |
| 2043 * If topline didn't change we need to restore w_botline and w_empty_rows | |
| 2044 * (we changed them). | |
| 2045 * If topline did change, update_screen() will set botline. | |
| 2046 */ | |
| 2047 if (curwin->w_topline == old_topline && set_topbot) | |
| 2048 { | |
| 2049 curwin->w_botline = old_botline; | |
| 2050 curwin->w_empty_rows = old_empty_rows; | |
| 2051 curwin->w_valid = old_valid; | |
| 2052 } | |
| 2053 curwin->w_valid |= VALID_TOPLINE; | |
| 2054 } | |
| 2055 | |
| 2056 /* | |
| 2057 * Recompute topline to put the cursor halfway the window | |
| 2058 * If "atend" is TRUE, also put it halfway at the end of the file. | |
| 2059 */ | |
| 2060 void | |
|
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diff
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|
2061 scroll_cursor_halfway(int atend) |
| 7 | 2062 { |
| 2063 int above = 0; | |
| 2064 linenr_T topline; | |
| 2065 #ifdef FEAT_DIFF | |
| 2066 int topfill = 0; | |
| 2067 #endif | |
| 2068 int below = 0; | |
| 2069 int used; | |
| 2070 lineoff_T loff; | |
| 2071 lineoff_T boff; | |
| 5661 | 2072 #ifdef FEAT_DIFF |
| 5653 | 2073 linenr_T old_topline = curwin->w_topline; |
| 5661 | 2074 #endif |
| 7 | 2075 |
| 2076 loff.lnum = boff.lnum = curwin->w_cursor.lnum; | |
| 2077 #ifdef FEAT_FOLDING | |
| 2078 (void)hasFolding(loff.lnum, &loff.lnum, &boff.lnum); | |
| 2079 #endif | |
| 2080 #ifdef FEAT_DIFF | |
| 2081 used = plines_nofill(loff.lnum); | |
| 2082 loff.fill = 0; | |
| 2083 boff.fill = 0; | |
| 2084 #else | |
| 2085 used = plines(loff.lnum); | |
| 2086 #endif | |
| 2087 topline = loff.lnum; | |
| 2088 while (topline > 1) | |
| 2089 { | |
| 2090 if (below <= above) /* add a line below the cursor first */ | |
| 2091 { | |
| 2092 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
| 2093 { | |
| 2094 botline_forw(&boff); | |
| 2095 used += boff.height; | |
| 2096 if (used > curwin->w_height) | |
| 2097 break; | |
| 2098 below += boff.height; | |
| 2099 } | |
| 2100 else | |
| 2101 { | |
| 2102 ++below; /* count a "~" line */ | |
| 2103 if (atend) | |
| 2104 ++used; | |
| 2105 } | |
| 2106 } | |
| 2107 | |
| 2108 if (below > above) /* add a line above the cursor */ | |
| 2109 { | |
| 2110 topline_back(&loff); | |
|
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2111 if (loff.height == MAXCOL) |
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2112 used = MAXCOL; |
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2113 else |
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|
2114 used += loff.height; |
| 7 | 2115 if (used > curwin->w_height) |
| 2116 break; | |
| 2117 above += loff.height; | |
| 2118 topline = loff.lnum; | |
| 2119 #ifdef FEAT_DIFF | |
| 2120 topfill = loff.fill; | |
| 2121 #endif | |
| 2122 } | |
| 2123 } | |
| 2124 #ifdef FEAT_FOLDING | |
| 2125 if (!hasFolding(topline, &curwin->w_topline, NULL)) | |
| 2126 #endif | |
| 2127 curwin->w_topline = topline; | |
| 2128 #ifdef FEAT_DIFF | |
| 2129 curwin->w_topfill = topfill; | |
| 5653 | 2130 if (old_topline > curwin->w_topline + curwin->w_height) |
| 2131 curwin->w_botfill = FALSE; | |
| 7 | 2132 check_topfill(curwin, FALSE); |
| 2133 #endif | |
| 2134 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2135 curwin->w_valid |= VALID_TOPLINE; | |
| 2136 } | |
| 2137 | |
| 2138 /* | |
| 2139 * Correct the cursor position so that it is in a part of the screen at least | |
| 2140 * 'so' lines from the top and bottom, if possible. | |
| 2141 * If not possible, put it at the same position as scroll_cursor_halfway(). | |
| 2142 * When called topline must be valid! | |
| 2143 */ | |
| 2144 void | |
|
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|
2145 cursor_correct(void) |
| 7 | 2146 { |
| 2147 int above = 0; /* screen lines above topline */ | |
| 2148 linenr_T topline; | |
| 2149 int below = 0; /* screen lines below botline */ | |
| 2150 linenr_T botline; | |
| 2151 int above_wanted, below_wanted; | |
| 2152 linenr_T cln; /* Cursor Line Number */ | |
| 2153 int max_off; | |
| 2154 | |
| 2155 /* | |
| 2156 * How many lines we would like to have above/below the cursor depends on | |
| 2157 * whether the first/last line of the file is on screen. | |
| 2158 */ | |
| 2159 above_wanted = p_so; | |
| 2160 below_wanted = p_so; | |
| 2161 #ifdef FEAT_MOUSE | |
| 1121 | 2162 if (mouse_dragging > 0) |
| 7 | 2163 { |
| 2164 above_wanted = mouse_dragging - 1; | |
| 2165 below_wanted = mouse_dragging - 1; | |
| 2166 } | |
| 2167 #endif | |
| 2168 if (curwin->w_topline == 1) | |
| 2169 { | |
| 2170 above_wanted = 0; | |
| 2171 max_off = curwin->w_height / 2; | |
| 2172 if (below_wanted > max_off) | |
| 2173 below_wanted = max_off; | |
| 2174 } | |
| 2175 validate_botline(); | |
| 2176 if (curwin->w_botline == curbuf->b_ml.ml_line_count + 1 | |
| 2177 #ifdef FEAT_MOUSE | |
| 1121 | 2178 && mouse_dragging == 0 |
| 7 | 2179 #endif |
| 2180 ) | |
| 2181 { | |
| 2182 below_wanted = 0; | |
| 2183 max_off = (curwin->w_height - 1) / 2; | |
| 2184 if (above_wanted > max_off) | |
| 2185 above_wanted = max_off; | |
| 2186 } | |
| 2187 | |
| 2188 /* | |
| 2189 * If there are sufficient file-lines above and below the cursor, we can | |
| 2190 * return now. | |
| 2191 */ | |
| 2192 cln = curwin->w_cursor.lnum; | |
| 2193 if (cln >= curwin->w_topline + above_wanted | |
| 2194 && cln < curwin->w_botline - below_wanted | |
| 2195 #ifdef FEAT_FOLDING | |
| 2196 && !hasAnyFolding(curwin) | |
| 2197 #endif | |
| 2198 ) | |
| 2199 return; | |
| 2200 | |
| 2201 /* | |
| 2202 * Narrow down the area where the cursor can be put by taking lines from | |
| 2203 * the top and the bottom until: | |
| 2204 * - the desired context lines are found | |
| 2205 * - the lines from the top is past the lines from the bottom | |
| 2206 */ | |
| 2207 topline = curwin->w_topline; | |
| 2208 botline = curwin->w_botline - 1; | |
| 2209 #ifdef FEAT_DIFF | |
| 2210 /* count filler lines as context */ | |
| 2211 above = curwin->w_topfill; | |
| 2212 below = curwin->w_filler_rows; | |
| 2213 #endif | |
| 2214 while ((above < above_wanted || below < below_wanted) && topline < botline) | |
| 2215 { | |
| 2216 if (below < below_wanted && (below <= above || above >= above_wanted)) | |
| 2217 { | |
| 2218 #ifdef FEAT_FOLDING | |
| 2219 if (hasFolding(botline, &botline, NULL)) | |
| 2220 ++below; | |
| 2221 else | |
| 2222 #endif | |
| 2223 below += plines(botline); | |
| 2224 --botline; | |
| 2225 } | |
| 2226 if (above < above_wanted && (above < below || below >= below_wanted)) | |
| 2227 { | |
| 2228 #ifdef FEAT_FOLDING | |
| 2229 if (hasFolding(topline, NULL, &topline)) | |
| 2230 ++above; | |
| 2231 else | |
| 2232 #endif | |
|
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2233 above += PLINES_NOFILL(topline); |
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2234 #ifdef FEAT_DIFF |
| 7 | 2235 /* Count filler lines below this line as context. */ |
| 2236 if (topline < botline) | |
| 2237 above += diff_check_fill(curwin, topline + 1); | |
| 2238 #endif | |
| 2239 ++topline; | |
| 2240 } | |
| 2241 } | |
| 2242 if (topline == botline || botline == 0) | |
| 2243 curwin->w_cursor.lnum = topline; | |
| 2244 else if (topline > botline) | |
| 2245 curwin->w_cursor.lnum = botline; | |
| 2246 else | |
| 2247 { | |
| 2248 if (cln < topline && curwin->w_topline > 1) | |
| 2249 { | |
| 2250 curwin->w_cursor.lnum = topline; | |
| 2251 curwin->w_valid &= | |
| 2252 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
| 2253 } | |
| 2254 if (cln > botline && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 2255 { | |
| 2256 curwin->w_cursor.lnum = botline; | |
| 2257 curwin->w_valid &= | |
| 2258 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
| 2259 } | |
| 2260 } | |
| 2261 curwin->w_valid |= VALID_TOPLINE; | |
| 2262 } | |
| 2263 | |
|
7803
37c929c4a073
commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
Christian Brabandt <cb@256bit.org>
parents:
7103
diff
changeset
|
2264 static void get_scroll_overlap(lineoff_T *lp, int dir); |
| 7 | 2265 |
| 2266 /* | |
| 2267 * move screen 'count' pages up or down and update screen | |
| 2268 * | |
| 2269 * return FAIL for failure, OK otherwise | |
| 2270 */ | |
| 2271 int | |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2272 onepage(int dir, long count) |
| 7 | 2273 { |
| 2274 long n; | |
| 2275 int retval = OK; | |
| 2276 lineoff_T loff; | |
| 2277 linenr_T old_topline = curwin->w_topline; | |
| 2278 | |
| 2279 if (curbuf->b_ml.ml_line_count == 1) /* nothing to do */ | |
| 2280 { | |
| 2281 beep_flush(); | |
| 2282 return FAIL; | |
| 2283 } | |
| 2284 | |
| 2285 for ( ; count > 0; --count) | |
| 2286 { | |
| 2287 validate_botline(); | |
| 2288 /* | |
| 2289 * It's an error to move a page up when the first line is already on | |
| 2290 * the screen. It's an error to move a page down when the last line | |
| 2291 * is on the screen and the topline is 'scrolloff' lines from the | |
| 2292 * last line. | |
| 2293 */ | |
| 2294 if (dir == FORWARD | |
| 2295 ? ((curwin->w_topline >= curbuf->b_ml.ml_line_count - p_so) | |
| 2296 && curwin->w_botline > curbuf->b_ml.ml_line_count) | |
| 2297 : (curwin->w_topline == 1 | |
| 2298 #ifdef FEAT_DIFF | |
| 2299 && curwin->w_topfill == | |
| 2300 diff_check_fill(curwin, curwin->w_topline) | |
| 2301 #endif | |
| 2302 )) | |
| 2303 { | |
| 2304 beep_flush(); | |
| 2305 retval = FAIL; | |
| 2306 break; | |
| 2307 } | |
| 2308 | |
| 2309 #ifdef FEAT_DIFF | |
| 2310 loff.fill = 0; | |
| 2311 #endif | |
| 2312 if (dir == FORWARD) | |
| 2313 { | |
|
10349
cf988222b150
commit https://github.com/vim/vim/commit/a1f4cb93ba50ea9e40cd4b1f5592b8a6d1398660
Christian Brabandt <cb@256bit.org>
parents:
10295
diff
changeset
|
2314 if (ONE_WINDOW && p_window > 0 && p_window < Rows - 1) |
| 7 | 2315 { |
| 164 | 2316 /* Vi compatible scrolling */ |
| 2317 if (p_window <= 2) | |
| 2318 ++curwin->w_topline; | |
| 2319 else | |
| 2320 curwin->w_topline += p_window - 2; | |
| 2321 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
| 2322 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
| 2323 curwin->w_cursor.lnum = curwin->w_topline; | |
| 2324 } | |
| 2325 else if (curwin->w_botline > curbuf->b_ml.ml_line_count) | |
| 2326 { | |
| 2327 /* at end of file */ | |
| 7 | 2328 curwin->w_topline = curbuf->b_ml.ml_line_count; |
| 2329 #ifdef FEAT_DIFF | |
| 2330 curwin->w_topfill = 0; | |
| 2331 #endif | |
| 2332 curwin->w_valid &= ~(VALID_WROW|VALID_CROW); | |
| 2333 } | |
| 2334 else | |
| 2335 { | |
| 2336 /* For the overlap, start with the line just below the window | |
| 2337 * and go upwards. */ | |
| 2338 loff.lnum = curwin->w_botline; | |
| 2339 #ifdef FEAT_DIFF | |
| 2340 loff.fill = diff_check_fill(curwin, loff.lnum) | |
| 2341 - curwin->w_filler_rows; | |
| 2342 #endif | |
| 2343 get_scroll_overlap(&loff, -1); | |
| 2344 curwin->w_topline = loff.lnum; | |
| 2345 #ifdef FEAT_DIFF | |
| 2346 curwin->w_topfill = loff.fill; | |
| 2347 check_topfill(curwin, FALSE); | |
| 2348 #endif | |
| 2349 curwin->w_cursor.lnum = curwin->w_topline; | |
| 2350 curwin->w_valid &= ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW| | |
| 2351 VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2352 } | |
| 2353 } | |
| 2354 else /* dir == BACKWARDS */ | |
| 2355 { | |
| 2356 #ifdef FEAT_DIFF | |
| 2357 if (curwin->w_topline == 1) | |
| 2358 { | |
| 2359 /* Include max number of filler lines */ | |
| 2360 max_topfill(); | |
| 2361 continue; | |
| 2362 } | |
| 2363 #endif | |
|
10349
cf988222b150
commit https://github.com/vim/vim/commit/a1f4cb93ba50ea9e40cd4b1f5592b8a6d1398660
Christian Brabandt <cb@256bit.org>
parents:
10295
diff
changeset
|
2364 if (ONE_WINDOW && p_window > 0 && p_window < Rows - 1) |
| 164 | 2365 { |
| 2366 /* Vi compatible scrolling (sort of) */ | |
| 2367 if (p_window <= 2) | |
| 2368 --curwin->w_topline; | |
| 2369 else | |
| 2370 curwin->w_topline -= p_window - 2; | |
| 2371 if (curwin->w_topline < 1) | |
| 2372 curwin->w_topline = 1; | |
| 2373 curwin->w_cursor.lnum = curwin->w_topline + p_window - 1; | |
| 2374 if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count) | |
| 2375 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; | |
| 2376 continue; | |
| 2377 } | |
| 2378 | |
| 7 | 2379 /* Find the line at the top of the window that is going to be the |
| 2380 * line at the bottom of the window. Make sure this results in | |
| 2381 * the same line as before doing CTRL-F. */ | |
| 2382 loff.lnum = curwin->w_topline - 1; | |
| 2383 #ifdef FEAT_DIFF | |
| 2384 loff.fill = diff_check_fill(curwin, loff.lnum + 1) | |
| 2385 - curwin->w_topfill; | |
| 2386 #endif | |
| 2387 get_scroll_overlap(&loff, 1); | |
| 2388 | |
| 2389 if (loff.lnum >= curbuf->b_ml.ml_line_count) | |
| 2390 { | |
| 2391 loff.lnum = curbuf->b_ml.ml_line_count; | |
| 2392 #ifdef FEAT_DIFF | |
| 2393 loff.fill = 0; | |
| 2394 } | |
| 2395 else | |
| 2396 { | |
| 2397 botline_topline(&loff); | |
| 2398 #endif | |
| 2399 } | |
| 2400 curwin->w_cursor.lnum = loff.lnum; | |
| 2401 | |
| 2402 /* Find the line just above the new topline to get the right line | |
| 2403 * at the bottom of the window. */ | |
| 2404 n = 0; | |
| 2405 while (n <= curwin->w_height && loff.lnum >= 1) | |
| 2406 { | |
| 2407 topline_back(&loff); | |
|
2082
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2408 if (loff.height == MAXCOL) |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2409 n = MAXCOL; |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2410 else |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2411 n += loff.height; |
| 7 | 2412 } |
|
2082
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2413 if (loff.lnum < 1) /* at begin of file */ |
| 7 | 2414 { |
| 2415 curwin->w_topline = 1; | |
| 2416 #ifdef FEAT_DIFF | |
| 2417 max_topfill(); | |
| 2418 #endif | |
| 2419 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 2420 } | |
| 2421 else | |
| 2422 { | |
| 2423 /* Go two lines forward again. */ | |
| 2424 #ifdef FEAT_DIFF | |
| 2425 topline_botline(&loff); | |
| 2426 #endif | |
| 2427 botline_forw(&loff); | |
| 2428 botline_forw(&loff); | |
| 2429 #ifdef FEAT_DIFF | |
| 2430 botline_topline(&loff); | |
| 2431 #endif | |
| 2432 #ifdef FEAT_FOLDING | |
| 2433 /* We're at the wrong end of a fold now. */ | |
| 2434 (void)hasFolding(loff.lnum, &loff.lnum, NULL); | |
| 2435 #endif | |
| 2436 | |
| 2437 /* Always scroll at least one line. Avoid getting stuck on | |
| 2438 * very long lines. */ | |
| 2439 if (loff.lnum >= curwin->w_topline | |
| 2440 #ifdef FEAT_DIFF | |
| 2441 && (loff.lnum > curwin->w_topline | |
| 2442 || loff.fill >= curwin->w_topfill) | |
| 2443 #endif | |
| 2444 ) | |
| 2445 { | |
| 2446 #ifdef FEAT_DIFF | |
| 2447 /* First try using the maximum number of filler lines. If | |
| 2448 * that's not enough, backup one line. */ | |
| 2449 loff.fill = curwin->w_topfill; | |
| 2450 if (curwin->w_topfill < diff_check_fill(curwin, | |
| 2451 curwin->w_topline)) | |
| 2452 max_topfill(); | |
| 2453 if (curwin->w_topfill == loff.fill) | |
| 2454 #endif | |
| 2455 { | |
| 2456 --curwin->w_topline; | |
| 2457 #ifdef FEAT_DIFF | |
| 2458 curwin->w_topfill = 0; | |
| 2459 #endif | |
| 2460 } | |
| 2461 comp_botline(curwin); | |
| 2462 curwin->w_cursor.lnum = curwin->w_botline - 1; | |
| 5764 | 2463 curwin->w_valid &= |
| 2464 ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW|VALID_CROW); | |
| 7 | 2465 } |
| 2466 else | |
| 2467 { | |
| 2468 curwin->w_topline = loff.lnum; | |
| 2469 #ifdef FEAT_DIFF | |
| 2470 curwin->w_topfill = loff.fill; | |
| 2471 check_topfill(curwin, FALSE); | |
| 2472 #endif | |
| 2473 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 2474 } | |
| 2475 } | |
| 2476 } | |
| 2477 } | |
| 2478 #ifdef FEAT_FOLDING | |
| 2479 foldAdjustCursor(); | |
| 2480 #endif | |
| 2481 cursor_correct(); | |
|
10102
b80ad55d62d8
commit https://github.com/vim/vim/commit/bc54f3f3fed4dc3556df8c46cee6739d211b0eb2
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
2482 check_cursor_col(); |
| 161 | 2483 if (retval == OK) |
| 2484 beginline(BL_SOL | BL_FIX); | |
| 7 | 2485 curwin->w_valid &= ~(VALID_WCOL|VALID_WROW|VALID_VIRTCOL); |
| 2486 | |
| 2487 /* | |
| 2488 * Avoid the screen jumping up and down when 'scrolloff' is non-zero. | |
| 2489 * But make sure we scroll at least one line (happens with mix of long | |
| 2490 * wrapping lines and non-wrapping line). | |
| 2491 */ | |
| 2492 if (retval == OK && dir == FORWARD && check_top_offset()) | |
| 2493 { | |
| 2494 scroll_cursor_top(1, FALSE); | |
| 2495 if (curwin->w_topline <= old_topline | |
| 2496 && old_topline < curbuf->b_ml.ml_line_count) | |
| 2497 { | |
| 2498 curwin->w_topline = old_topline + 1; | |
| 2499 #ifdef FEAT_FOLDING | |
| 2500 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 2501 #endif | |
| 2502 } | |
| 2503 } | |
| 2504 | |
| 2505 redraw_later(VALID); | |
| 2506 return retval; | |
| 2507 } | |
| 2508 | |
| 2509 /* | |
| 2510 * Decide how much overlap to use for page-up or page-down scrolling. | |
| 2511 * This is symmetric, so that doing both keeps the same lines displayed. | |
| 2512 * Three lines are examined: | |
| 2513 * | |
| 2514 * before CTRL-F after CTRL-F / before CTRL-B | |
| 2515 * etc. l1 | |
| 2516 * l1 last but one line ------------ | |
| 2517 * l2 last text line l2 top text line | |
| 2518 * ------------- l3 second text line | |
| 2519 * l3 etc. | |
| 2520 */ | |
| 2521 static void | |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2522 get_scroll_overlap(lineoff_T *lp, int dir) |
| 7 | 2523 { |
| 2524 int h1, h2, h3, h4; | |
| 2525 int min_height = curwin->w_height - 2; | |
| 2526 lineoff_T loff0, loff1, loff2; | |
| 2527 | |
| 2528 #ifdef FEAT_DIFF | |
| 2529 if (lp->fill > 0) | |
| 2530 lp->height = 1; | |
| 2531 else | |
| 2532 lp->height = plines_nofill(lp->lnum); | |
| 2533 #else | |
| 2534 lp->height = plines(lp->lnum); | |
| 2535 #endif | |
| 2536 h1 = lp->height; | |
| 2537 if (h1 > min_height) | |
| 2538 return; /* no overlap */ | |
| 2539 | |
| 2540 loff0 = *lp; | |
| 2541 if (dir > 0) | |
| 2542 botline_forw(lp); | |
| 2543 else | |
| 2544 topline_back(lp); | |
| 2545 h2 = lp->height; | |
| 3968 | 2546 if (h2 == MAXCOL || h2 + h1 > min_height) |
| 7 | 2547 { |
| 2548 *lp = loff0; /* no overlap */ | |
| 2549 return; | |
| 2550 } | |
| 2551 | |
| 2552 loff1 = *lp; | |
| 2553 if (dir > 0) | |
| 2554 botline_forw(lp); | |
| 2555 else | |
| 2556 topline_back(lp); | |
| 2557 h3 = lp->height; | |
| 3968 | 2558 if (h3 == MAXCOL || h3 + h2 > min_height) |
| 7 | 2559 { |
| 2560 *lp = loff0; /* no overlap */ | |
| 2561 return; | |
| 2562 } | |
| 2563 | |
| 2564 loff2 = *lp; | |
| 2565 if (dir > 0) | |
| 2566 botline_forw(lp); | |
| 2567 else | |
| 2568 topline_back(lp); | |
| 2569 h4 = lp->height; | |
| 3968 | 2570 if (h4 == MAXCOL || h4 + h3 + h2 > min_height || h3 + h2 + h1 > min_height) |
| 7 | 2571 *lp = loff1; /* 1 line overlap */ |
| 2572 else | |
| 2573 *lp = loff2; /* 2 lines overlap */ | |
| 2574 return; | |
| 2575 } | |
| 2576 | |
| 2577 /* #define KEEP_SCREEN_LINE */ | |
| 2578 /* | |
| 2579 * Scroll 'scroll' lines up or down. | |
| 2580 */ | |
| 2581 void | |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2582 halfpage(int flag, linenr_T Prenum) |
| 7 | 2583 { |
| 2584 long scrolled = 0; | |
| 2585 int i; | |
| 2586 int n; | |
| 2587 int room; | |
| 2588 | |
| 2589 if (Prenum) | |
| 2590 curwin->w_p_scr = (Prenum > curwin->w_height) ? | |
| 2591 curwin->w_height : Prenum; | |
| 2592 n = (curwin->w_p_scr <= curwin->w_height) ? | |
| 2593 curwin->w_p_scr : curwin->w_height; | |
| 2594 | |
| 2595 validate_botline(); | |
| 2596 room = curwin->w_empty_rows; | |
| 2597 #ifdef FEAT_DIFF | |
| 2598 room += curwin->w_filler_rows; | |
| 2599 #endif | |
| 2600 if (flag) | |
| 2601 { | |
| 2602 /* | |
| 2603 * scroll the text up | |
| 2604 */ | |
| 2605 while (n > 0 && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 2606 { | |
| 2607 #ifdef FEAT_DIFF | |
| 2608 if (curwin->w_topfill > 0) | |
| 2609 { | |
| 2610 i = 1; | |
| 2611 if (--n < 0 && scrolled > 0) | |
| 2612 break; | |
| 2613 --curwin->w_topfill; | |
| 2614 } | |
| 2615 else | |
| 2616 #endif | |
| 2617 { | |
|
7103
84d318257a45
commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2618 i = PLINES_NOFILL(curwin->w_topline); |
| 7 | 2619 n -= i; |
| 2620 if (n < 0 && scrolled > 0) | |
| 2621 break; | |
| 2622 #ifdef FEAT_FOLDING | |
| 2623 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
| 2624 #endif | |
| 2625 ++curwin->w_topline; | |
| 2626 #ifdef FEAT_DIFF | |
| 2627 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 2628 #endif | |
| 2629 | |
| 2630 #ifndef KEEP_SCREEN_LINE | |
| 2631 if (curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
| 2632 { | |
| 2633 ++curwin->w_cursor.lnum; | |
| 2634 curwin->w_valid &= | |
| 2635 ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
| 2636 } | |
| 2637 #endif | |
| 2638 } | |
| 2639 curwin->w_valid &= ~(VALID_CROW|VALID_WROW); | |
| 2640 scrolled += i; | |
| 2641 | |
| 2642 /* | |
| 2643 * Correct w_botline for changed w_topline. | |
| 2644 * Won't work when there are filler lines. | |
| 2645 */ | |
| 2646 #ifdef FEAT_DIFF | |
| 2647 if (curwin->w_p_diff) | |
| 2648 curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2649 else | |
| 2650 #endif | |
| 2651 { | |
| 2652 room += i; | |
| 2653 do | |
| 2654 { | |
| 2655 i = plines(curwin->w_botline); | |
| 2656 if (i > room) | |
| 2657 break; | |
| 2658 #ifdef FEAT_FOLDING | |
| 2659 (void)hasFolding(curwin->w_botline, NULL, | |
| 2660 &curwin->w_botline); | |
| 2661 #endif | |
| 2662 ++curwin->w_botline; | |
| 2663 room -= i; | |
| 2664 } while (curwin->w_botline <= curbuf->b_ml.ml_line_count); | |
| 2665 } | |
| 2666 } | |
| 2667 | |
| 2668 #ifndef KEEP_SCREEN_LINE | |
| 2669 /* | |
| 2670 * When hit bottom of the file: move cursor down. | |
| 2671 */ | |
| 2672 if (n > 0) | |
| 2673 { | |
| 2674 # ifdef FEAT_FOLDING | |
| 2675 if (hasAnyFolding(curwin)) | |
| 2676 { | |
| 2677 while (--n >= 0 | |
| 2678 && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
| 2679 { | |
| 2680 (void)hasFolding(curwin->w_cursor.lnum, NULL, | |
| 2681 &curwin->w_cursor.lnum); | |
| 2682 ++curwin->w_cursor.lnum; | |
| 2683 } | |
| 2684 } | |
| 2685 else | |
| 2686 # endif | |
| 2687 curwin->w_cursor.lnum += n; | |
| 2688 check_cursor_lnum(); | |
| 2689 } | |
| 2690 #else | |
| 2691 /* try to put the cursor in the same screen line */ | |
| 2692 while ((curwin->w_cursor.lnum < curwin->w_topline || scrolled > 0) | |
| 2693 && curwin->w_cursor.lnum < curwin->w_botline - 1) | |
| 2694 { | |
| 2695 scrolled -= plines(curwin->w_cursor.lnum); | |
| 2696 if (scrolled < 0 && curwin->w_cursor.lnum >= curwin->w_topline) | |
| 2697 break; | |
| 2698 # ifdef FEAT_FOLDING | |
| 2699 (void)hasFolding(curwin->w_cursor.lnum, NULL, | |
| 2700 &curwin->w_cursor.lnum); | |
| 2701 # endif | |
| 2702 ++curwin->w_cursor.lnum; | |
| 2703 } | |
| 2704 #endif | |
| 2705 } | |
| 2706 else | |
| 2707 { | |
| 2708 /* | |
| 2709 * scroll the text down | |
| 2710 */ | |
| 2711 while (n > 0 && curwin->w_topline > 1) | |
| 2712 { | |
| 2713 #ifdef FEAT_DIFF | |
| 2714 if (curwin->w_topfill < diff_check_fill(curwin, curwin->w_topline)) | |
| 2715 { | |
| 2716 i = 1; | |
| 2717 if (--n < 0 && scrolled > 0) | |
| 2718 break; | |
| 2719 ++curwin->w_topfill; | |
| 2720 } | |
| 2721 else | |
| 2722 #endif | |
| 2723 { | |
|
7103
84d318257a45
commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2724 i = PLINES_NOFILL(curwin->w_topline - 1); |
| 7 | 2725 n -= i; |
| 2726 if (n < 0 && scrolled > 0) | |
| 2727 break; | |
| 2728 --curwin->w_topline; | |
| 2729 #ifdef FEAT_FOLDING | |
| 2730 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 2731 #endif | |
| 2732 #ifdef FEAT_DIFF | |
| 2733 curwin->w_topfill = 0; | |
| 2734 #endif | |
| 2735 } | |
| 2736 curwin->w_valid &= ~(VALID_CROW|VALID_WROW| | |
| 2737 VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2738 scrolled += i; | |
| 2739 #ifndef KEEP_SCREEN_LINE | |
| 2740 if (curwin->w_cursor.lnum > 1) | |
| 2741 { | |
| 2742 --curwin->w_cursor.lnum; | |
| 2743 curwin->w_valid &= ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
| 2744 } | |
| 2745 #endif | |
| 2746 } | |
| 2747 #ifndef KEEP_SCREEN_LINE | |
| 2748 /* | |
| 2749 * When hit top of the file: move cursor up. | |
| 2750 */ | |
| 2751 if (n > 0) | |
| 2752 { | |
| 2753 if (curwin->w_cursor.lnum <= (linenr_T)n) | |
| 2754 curwin->w_cursor.lnum = 1; | |
| 2755 else | |
| 2756 # ifdef FEAT_FOLDING | |
| 2757 if (hasAnyFolding(curwin)) | |
| 2758 { | |
| 2759 while (--n >= 0 && curwin->w_cursor.lnum > 1) | |
| 2760 { | |
| 2761 --curwin->w_cursor.lnum; | |
| 2762 (void)hasFolding(curwin->w_cursor.lnum, | |
| 2763 &curwin->w_cursor.lnum, NULL); | |
| 2764 } | |
| 2765 } | |
| 2766 else | |
| 2767 # endif | |
| 2768 curwin->w_cursor.lnum -= n; | |
| 2769 } | |
| 2770 #else | |
| 2771 /* try to put the cursor in the same screen line */ | |
| 2772 scrolled += n; /* move cursor when topline is 1 */ | |
| 2773 while (curwin->w_cursor.lnum > curwin->w_topline | |
| 2774 && (scrolled > 0 || curwin->w_cursor.lnum >= curwin->w_botline)) | |
| 2775 { | |
| 2776 scrolled -= plines(curwin->w_cursor.lnum - 1); | |
| 2777 if (scrolled < 0 && curwin->w_cursor.lnum < curwin->w_botline) | |
| 2778 break; | |
| 2779 --curwin->w_cursor.lnum; | |
| 2780 # ifdef FEAT_FOLDING | |
| 2781 foldAdjustCursor(); | |
| 2782 # endif | |
| 2783 } | |
| 2784 #endif | |
| 2785 } | |
| 2786 # ifdef FEAT_FOLDING | |
| 2787 /* Move cursor to first line of closed fold. */ | |
| 2788 foldAdjustCursor(); | |
| 2789 # endif | |
| 2790 #ifdef FEAT_DIFF | |
| 2791 check_topfill(curwin, !flag); | |
| 2792 #endif | |
| 2793 cursor_correct(); | |
| 2794 beginline(BL_SOL | BL_FIX); | |
| 2795 redraw_later(VALID); | |
| 2796 } | |
|
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2797 |
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2798 #if defined(FEAT_CURSORBIND) || defined(PROTO) |
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2799 void |
|
7829
2a8d6b2dd925
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2800 do_check_cursorbind(void) |
|
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2801 { |
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|
2802 linenr_T line = curwin->w_cursor.lnum; |
| 3415 | 2803 colnr_T col = curwin->w_cursor.col; |
| 2804 # ifdef FEAT_VIRTUALEDIT | |
| 2805 colnr_T coladd = curwin->w_cursor.coladd; | |
| 2806 # endif | |
| 3433 | 2807 colnr_T curswant = curwin->w_curswant; |
| 2808 int set_curswant = curwin->w_set_curswant; | |
|
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2809 win_T *old_curwin = curwin; |
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2810 buf_T *old_curbuf = curbuf; |
| 2693 | 2811 int restart_edit_save; |
|
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2812 int old_VIsual_select = VIsual_select; |
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2813 int old_VIsual_active = VIsual_active; |
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2814 |
|
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2815 /* |
|
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2816 * loop through the cursorbound windows |
|
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2817 */ |
|
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|
2818 VIsual_select = VIsual_active = 0; |
|
9649
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2819 FOR_ALL_WINDOWS(curwin) |
|
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2820 { |
|
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|
2821 curbuf = curwin->w_buffer; |
|
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2822 /* skip original window and windows with 'noscrollbind' */ |
|
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2823 if (curwin != old_curwin && curwin->w_p_crb) |
|
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2824 { |
|
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|
2825 # ifdef FEAT_DIFF |
|
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2826 if (curwin->w_p_diff) |
|
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2827 curwin->w_cursor.lnum = |
|
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|
2828 diff_get_corresponding_line(old_curbuf, line); |
|
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2829 else |
|
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|
2830 # endif |
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|
2831 curwin->w_cursor.lnum = line; |
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|
2832 curwin->w_cursor.col = col; |
| 3415 | 2833 # ifdef FEAT_VIRTUALEDIT |
| 2834 curwin->w_cursor.coladd = coladd; | |
| 2835 # endif | |
| 3433 | 2836 curwin->w_curswant = curswant; |
| 2837 curwin->w_set_curswant = set_curswant; | |
|
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2838 |
| 2693 | 2839 /* Make sure the cursor is in a valid position. Temporarily set |
| 2840 * "restart_edit" to allow the cursor to be beyond the EOL. */ | |
| 2841 restart_edit_save = restart_edit; | |
| 2842 restart_edit = TRUE; | |
|
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2843 check_cursor(); |
|
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2844 # ifdef FEAT_SYN_HL |
|
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2845 if (curwin->w_p_cul || curwin->w_p_cuc) |
|
10583
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|
2846 validate_cursor(); |
|
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2847 # endif |
| 2693 | 2848 restart_edit = restart_edit_save; |
|
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2849 # ifdef FEAT_MBYTE |
|
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2850 /* Correct cursor for multi-byte character. */ |
|
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2851 if (has_mbyte) |
|
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2852 mb_adjust_cursor(); |
|
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2853 # endif |
|
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2854 redraw_later(VALID); |
|
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2855 |
| 2688 | 2856 /* Only scroll when 'scrollbind' hasn't done this. */ |
| 2857 if (!curwin->w_p_scb) | |
| 2858 update_topline(); | |
|
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2859 # ifdef FEAT_WINDOWS |
|
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2860 curwin->w_redr_status = TRUE; |
|
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2861 # endif |
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2862 } |
|
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2863 } |
|
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2864 |
|
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|
2865 /* |
|
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2866 * reset current-window |
|
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2867 */ |
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2868 VIsual_select = old_VIsual_select; |
|
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2869 VIsual_active = old_VIsual_active; |
|
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2870 curwin = old_curwin; |
|
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2871 curbuf = old_curbuf; |
|
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2872 } |
|
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2873 #endif /* FEAT_CURSORBIND */ |