Mercurial > vim
annotate src/move.c @ 24919:6349b9bc8db5
Added tag v8.2.2996 for changeset f11779c1d123ff1d6fe99f8e064343955f3fb88b
author | Bram Moolenaar <Bram@vim.org> |
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date | Mon, 14 Jun 2021 20:45:04 +0200 |
parents | 68f506771741 |
children | 406ab8d0bc0f |
rev | line source |
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commit https://github.com/vim/vim/commit/edf3f97ae2af024708ebb4ac614227327033ca47
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1 /* vi:set ts=8 sts=4 sw=4 noet: |
7 | 2 * |
3 * VIM - Vi IMproved by Bram Moolenaar | |
4 * | |
5 * Do ":help uganda" in Vim to read copying and usage conditions. | |
6 * Do ":help credits" in Vim to see a list of people who contributed. | |
7 * See README.txt for an overview of the Vim source code. | |
8 */ | |
9 /* | |
10 * move.c: Functions for moving the cursor and scrolling text. | |
11 * | |
12 * There are two ways to move the cursor: | |
13 * 1. Move the cursor directly, the text is scrolled to keep the cursor in the | |
14 * window. | |
15 * 2. Scroll the text, the cursor is moved into the text visible in the | |
16 * window. | |
17 * The 'scrolloff' option makes this a bit complicated. | |
18 */ | |
19 | |
20 #include "vim.h" | |
21 | |
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22 static int scrolljump_value(void); |
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23 static int check_top_offset(void); |
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24 static void curs_rows(win_T *wp); |
7 | 25 |
26 typedef struct | |
27 { | |
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28 linenr_T lnum; // line number |
7 | 29 #ifdef FEAT_DIFF |
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30 int fill; // filler lines |
7 | 31 #endif |
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32 int height; // height of added line |
7 | 33 } lineoff_T; |
34 | |
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35 static void topline_back(lineoff_T *lp); |
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36 static void botline_forw(lineoff_T *lp); |
7 | 37 |
38 /* | |
39 * Compute wp->w_botline for the current wp->w_topline. Can be called after | |
40 * wp->w_topline changed. | |
41 */ | |
42 static void | |
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43 comp_botline(win_T *wp) |
7 | 44 { |
45 int n; | |
46 linenr_T lnum; | |
47 int done; | |
48 #ifdef FEAT_FOLDING | |
49 linenr_T last; | |
50 int folded; | |
51 #endif | |
52 | |
53 /* | |
54 * If w_cline_row is valid, start there. | |
55 * Otherwise have to start at w_topline. | |
56 */ | |
57 check_cursor_moved(wp); | |
58 if (wp->w_valid & VALID_CROW) | |
59 { | |
60 lnum = wp->w_cursor.lnum; | |
61 done = wp->w_cline_row; | |
62 } | |
63 else | |
64 { | |
65 lnum = wp->w_topline; | |
66 done = 0; | |
67 } | |
68 | |
69 for ( ; lnum <= wp->w_buffer->b_ml.ml_line_count; ++lnum) | |
70 { | |
71 #ifdef FEAT_FOLDING | |
72 last = lnum; | |
73 folded = FALSE; | |
74 if (hasFoldingWin(wp, lnum, NULL, &last, TRUE, NULL)) | |
75 { | |
76 n = 1; | |
77 folded = TRUE; | |
78 } | |
79 else | |
80 #endif | |
81 #ifdef FEAT_DIFF | |
82 if (lnum == wp->w_topline) | |
83 n = plines_win_nofill(wp, lnum, TRUE) + wp->w_topfill; | |
84 else | |
85 #endif | |
86 n = plines_win(wp, lnum, TRUE); | |
87 if ( | |
88 #ifdef FEAT_FOLDING | |
89 lnum <= wp->w_cursor.lnum && last >= wp->w_cursor.lnum | |
90 #else | |
91 lnum == wp->w_cursor.lnum | |
92 #endif | |
93 ) | |
94 { | |
95 wp->w_cline_row = done; | |
96 wp->w_cline_height = n; | |
97 #ifdef FEAT_FOLDING | |
98 wp->w_cline_folded = folded; | |
99 #endif | |
5764 | 100 redraw_for_cursorline(wp); |
7 | 101 wp->w_valid |= (VALID_CROW|VALID_CHEIGHT); |
102 } | |
103 if (done + n > wp->w_height) | |
104 break; | |
105 done += n; | |
106 #ifdef FEAT_FOLDING | |
107 lnum = last; | |
108 #endif | |
109 } | |
110 | |
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111 // wp->w_botline is the line that is just below the window |
7 | 112 wp->w_botline = lnum; |
113 wp->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
114 | |
115 set_empty_rows(wp, done); | |
116 } | |
117 | |
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118 #ifdef FEAT_SYN_HL |
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119 void |
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120 reset_cursorline(void) |
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121 { |
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122 curwin->w_last_cursorline = 0; |
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123 } |
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124 #endif |
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125 |
7 | 126 /* |
5764 | 127 * Redraw when w_cline_row changes and 'relativenumber' or 'cursorline' is |
128 * set. | |
129 */ | |
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130 void |
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131 redraw_for_cursorline(win_T *wp) |
5764 | 132 { |
133 if ((wp->w_p_rnu | |
134 #ifdef FEAT_SYN_HL | |
135 || wp->w_p_cul | |
136 #endif | |
137 ) | |
138 && (wp->w_valid & VALID_CROW) == 0 | |
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139 && !pum_visible()) |
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140 { |
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141 if (wp->w_p_rnu) |
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142 // win_line() will redraw the number column only. |
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143 redraw_win_later(wp, VALID); |
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144 #ifdef FEAT_SYN_HL |
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145 if (wp->w_p_cul) |
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146 { |
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147 if (wp->w_redr_type <= VALID && wp->w_last_cursorline != 0) |
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148 { |
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149 // "w_last_cursorline" may be outdated, worst case we redraw |
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150 // too much. This is optimized for moving the cursor around in |
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151 // the current window. |
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152 redrawWinline(wp, wp->w_last_cursorline); |
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153 redrawWinline(wp, wp->w_cursor.lnum); |
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154 } |
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155 else |
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156 redraw_win_later(wp, SOME_VALID); |
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157 } |
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158 #endif |
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159 } |
5764 | 160 } |
161 | |
162 /* | |
7 | 163 * Update curwin->w_topline and redraw if necessary. |
164 * Used to update the screen before printing a message. | |
165 */ | |
166 void | |
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167 update_topline_redraw(void) |
7 | 168 { |
169 update_topline(); | |
170 if (must_redraw) | |
171 update_screen(0); | |
172 } | |
173 | |
174 /* | |
175 * Update curwin->w_topline to move the cursor onto the screen. | |
176 */ | |
177 void | |
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178 update_topline(void) |
7 | 179 { |
180 long line_count; | |
181 int halfheight; | |
182 int n; | |
183 linenr_T old_topline; | |
184 #ifdef FEAT_DIFF | |
185 int old_topfill; | |
186 #endif | |
187 #ifdef FEAT_FOLDING | |
188 linenr_T lnum; | |
189 #endif | |
190 int check_topline = FALSE; | |
191 int check_botline = FALSE; | |
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192 long *so_ptr = curwin->w_p_so >= 0 ? &curwin->w_p_so : &p_so; |
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193 int save_so = *so_ptr; |
7 | 194 |
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195 // If there is no valid screen and when the window height is zero just use |
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196 // the cursor line. |
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197 if (!screen_valid(TRUE) || curwin->w_height == 0) |
6247 | 198 { |
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199 check_cursor_lnum(); |
6247 | 200 curwin->w_topline = curwin->w_cursor.lnum; |
201 curwin->w_botline = curwin->w_topline; | |
202 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
203 curwin->w_scbind_pos = 1; | |
204 return; | |
205 } | |
206 | |
7 | 207 check_cursor_moved(curwin); |
208 if (curwin->w_valid & VALID_TOPLINE) | |
209 return; | |
210 | |
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211 // When dragging with the mouse, don't scroll that quickly |
1121 | 212 if (mouse_dragging > 0) |
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213 *so_ptr = mouse_dragging - 1; |
7 | 214 |
215 old_topline = curwin->w_topline; | |
216 #ifdef FEAT_DIFF | |
217 old_topfill = curwin->w_topfill; | |
218 #endif | |
219 | |
220 /* | |
221 * If the buffer is empty, always set topline to 1. | |
222 */ | |
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223 if (BUFEMPTY()) // special case - file is empty |
7 | 224 { |
225 if (curwin->w_topline != 1) | |
226 redraw_later(NOT_VALID); | |
227 curwin->w_topline = 1; | |
228 curwin->w_botline = 2; | |
229 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
230 curwin->w_scbind_pos = 1; | |
231 } | |
232 | |
233 /* | |
234 * If the cursor is above or near the top of the window, scroll the window | |
235 * to show the line the cursor is in, with 'scrolloff' context. | |
236 */ | |
237 else | |
238 { | |
239 if (curwin->w_topline > 1) | |
240 { | |
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241 // If the cursor is above topline, scrolling is always needed. |
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242 // If the cursor is far below topline and there is no folding, |
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243 // scrolling down is never needed. |
7 | 244 if (curwin->w_cursor.lnum < curwin->w_topline) |
245 check_topline = TRUE; | |
246 else if (check_top_offset()) | |
247 check_topline = TRUE; | |
248 } | |
249 #ifdef FEAT_DIFF | |
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250 // Check if there are more filler lines than allowed. |
7 | 251 if (!check_topline && curwin->w_topfill > diff_check_fill(curwin, |
252 curwin->w_topline)) | |
253 check_topline = TRUE; | |
254 #endif | |
255 | |
256 if (check_topline) | |
257 { | |
258 halfheight = curwin->w_height / 2 - 1; | |
259 if (halfheight < 2) | |
260 halfheight = 2; | |
261 | |
262 #ifdef FEAT_FOLDING | |
263 if (hasAnyFolding(curwin)) | |
264 { | |
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265 // Count the number of logical lines between the cursor and |
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266 // topline + scrolloff (approximation of how much will be |
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267 // scrolled). |
7 | 268 n = 0; |
269 for (lnum = curwin->w_cursor.lnum; | |
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270 lnum < curwin->w_topline + *so_ptr; ++lnum) |
7 | 271 { |
272 ++n; | |
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273 // stop at end of file or when we know we are far off |
7 | 274 if (lnum >= curbuf->b_ml.ml_line_count || n >= halfheight) |
275 break; | |
276 (void)hasFolding(lnum, NULL, &lnum); | |
277 } | |
278 } | |
279 else | |
280 #endif | |
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281 n = curwin->w_topline + *so_ptr - curwin->w_cursor.lnum; |
7 | 282 |
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283 // If we weren't very close to begin with, we scroll to put the |
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284 // cursor in the middle of the window. Otherwise put the cursor |
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285 // near the top of the window. |
7 | 286 if (n >= halfheight) |
287 scroll_cursor_halfway(FALSE); | |
288 else | |
289 { | |
532 | 290 scroll_cursor_top(scrolljump_value(), FALSE); |
7 | 291 check_botline = TRUE; |
292 } | |
293 } | |
294 | |
295 else | |
296 { | |
297 #ifdef FEAT_FOLDING | |
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298 // Make sure topline is the first line of a fold. |
7 | 299 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
300 #endif | |
301 check_botline = TRUE; | |
302 } | |
303 } | |
304 | |
305 /* | |
306 * If the cursor is below the bottom of the window, scroll the window | |
307 * to put the cursor on the window. | |
308 * When w_botline is invalid, recompute it first, to avoid a redraw later. | |
309 * If w_botline was approximated, we might need a redraw later in a few | |
310 * cases, but we don't want to spend (a lot of) time recomputing w_botline | |
311 * for every small change. | |
312 */ | |
313 if (check_botline) | |
314 { | |
315 if (!(curwin->w_valid & VALID_BOTLINE_AP)) | |
316 validate_botline(); | |
317 | |
318 if (curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
319 { | |
1744 | 320 if (curwin->w_cursor.lnum < curwin->w_botline) |
321 { | |
322 if (((long)curwin->w_cursor.lnum | |
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323 >= (long)curwin->w_botline - *so_ptr |
7 | 324 #ifdef FEAT_FOLDING |
325 || hasAnyFolding(curwin) | |
326 #endif | |
327 )) | |
1744 | 328 { |
7 | 329 lineoff_T loff; |
330 | |
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331 // Cursor is (a few lines) above botline, check if there are |
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332 // 'scrolloff' window lines below the cursor. If not, need to |
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333 // scroll. |
7 | 334 n = curwin->w_empty_rows; |
335 loff.lnum = curwin->w_cursor.lnum; | |
336 #ifdef FEAT_FOLDING | |
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337 // In a fold go to its last line. |
7 | 338 (void)hasFolding(loff.lnum, NULL, &loff.lnum); |
339 #endif | |
340 #ifdef FEAT_DIFF | |
341 loff.fill = 0; | |
342 n += curwin->w_filler_rows; | |
343 #endif | |
344 loff.height = 0; | |
345 while (loff.lnum < curwin->w_botline | |
346 #ifdef FEAT_DIFF | |
347 && (loff.lnum + 1 < curwin->w_botline || loff.fill == 0) | |
348 #endif | |
349 ) | |
350 { | |
351 n += loff.height; | |
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352 if (n >= *so_ptr) |
7 | 353 break; |
354 botline_forw(&loff); | |
355 } | |
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356 if (n >= *so_ptr) |
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357 // sufficient context, no need to scroll |
7 | 358 check_botline = FALSE; |
1744 | 359 } |
360 else | |
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361 // sufficient context, no need to scroll |
1744 | 362 check_botline = FALSE; |
7 | 363 } |
364 if (check_botline) | |
365 { | |
366 #ifdef FEAT_FOLDING | |
367 if (hasAnyFolding(curwin)) | |
368 { | |
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369 // Count the number of logical lines between the cursor and |
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370 // botline - scrolloff (approximation of how much will be |
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371 // scrolled). |
7 | 372 line_count = 0; |
373 for (lnum = curwin->w_cursor.lnum; | |
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374 lnum >= curwin->w_botline - *so_ptr; --lnum) |
7 | 375 { |
376 ++line_count; | |
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377 // stop at end of file or when we know we are far off |
7 | 378 if (lnum <= 0 || line_count > curwin->w_height + 1) |
379 break; | |
380 (void)hasFolding(lnum, &lnum, NULL); | |
381 } | |
382 } | |
383 else | |
384 #endif | |
385 line_count = curwin->w_cursor.lnum - curwin->w_botline | |
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386 + 1 + *so_ptr; |
7 | 387 if (line_count <= curwin->w_height + 1) |
532 | 388 scroll_cursor_bot(scrolljump_value(), FALSE); |
7 | 389 else |
390 scroll_cursor_halfway(FALSE); | |
391 } | |
392 } | |
393 } | |
394 curwin->w_valid |= VALID_TOPLINE; | |
395 | |
396 /* | |
397 * Need to redraw when topline changed. | |
398 */ | |
399 if (curwin->w_topline != old_topline | |
400 #ifdef FEAT_DIFF | |
401 || curwin->w_topfill != old_topfill | |
402 #endif | |
403 ) | |
404 { | |
3318 | 405 dollar_vcol = -1; |
740 | 406 if (curwin->w_skipcol != 0) |
7 | 407 { |
408 curwin->w_skipcol = 0; | |
409 redraw_later(NOT_VALID); | |
410 } | |
411 else | |
412 redraw_later(VALID); | |
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413 // May need to set w_skipcol when cursor in w_topline. |
7 | 414 if (curwin->w_cursor.lnum == curwin->w_topline) |
415 validate_cursor(); | |
416 } | |
417 | |
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418 *so_ptr = save_so; |
7 | 419 } |
420 | |
421 /* | |
532 | 422 * Return the scrolljump value to use for the current window. |
423 * When 'scrolljump' is positive use it as-is. | |
424 * When 'scrolljump' is negative use it as a percentage of the window height. | |
425 */ | |
426 static int | |
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427 scrolljump_value(void) |
532 | 428 { |
429 if (p_sj >= 0) | |
430 return (int)p_sj; | |
431 return (curwin->w_height * -p_sj) / 100; | |
432 } | |
433 | |
434 /* | |
7 | 435 * Return TRUE when there are not 'scrolloff' lines above the cursor for the |
436 * current window. | |
437 */ | |
438 static int | |
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439 check_top_offset(void) |
7 | 440 { |
441 lineoff_T loff; | |
442 int n; | |
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443 long so = get_scrolloff_value(); |
7 | 444 |
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445 if (curwin->w_cursor.lnum < curwin->w_topline + so |
7 | 446 #ifdef FEAT_FOLDING |
447 || hasAnyFolding(curwin) | |
448 #endif | |
449 ) | |
450 { | |
451 loff.lnum = curwin->w_cursor.lnum; | |
452 #ifdef FEAT_DIFF | |
453 loff.fill = 0; | |
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454 n = curwin->w_topfill; // always have this context |
7 | 455 #else |
456 n = 0; | |
457 #endif | |
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458 // Count the visible screen lines above the cursor line. |
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459 while (n < so) |
7 | 460 { |
461 topline_back(&loff); | |
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462 // Stop when included a line above the window. |
7 | 463 if (loff.lnum < curwin->w_topline |
464 #ifdef FEAT_DIFF | |
465 || (loff.lnum == curwin->w_topline && loff.fill > 0) | |
466 #endif | |
467 ) | |
468 break; | |
469 n += loff.height; | |
470 } | |
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471 if (n < so) |
7 | 472 return TRUE; |
473 } | |
474 return FALSE; | |
475 } | |
476 | |
477 void | |
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478 update_curswant(void) |
7 | 479 { |
480 if (curwin->w_set_curswant) | |
481 { | |
482 validate_virtcol(); | |
483 curwin->w_curswant = curwin->w_virtcol; | |
484 curwin->w_set_curswant = FALSE; | |
485 } | |
486 } | |
487 | |
488 /* | |
489 * Check if the cursor has moved. Set the w_valid flag accordingly. | |
490 */ | |
491 void | |
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492 check_cursor_moved(win_T *wp) |
7 | 493 { |
494 if (wp->w_cursor.lnum != wp->w_valid_cursor.lnum) | |
495 { | |
496 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
497 |VALID_CHEIGHT|VALID_CROW|VALID_TOPLINE); | |
498 wp->w_valid_cursor = wp->w_cursor; | |
499 wp->w_valid_leftcol = wp->w_leftcol; | |
500 } | |
501 else if (wp->w_cursor.col != wp->w_valid_cursor.col | |
502 || wp->w_leftcol != wp->w_valid_leftcol | |
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503 || wp->w_cursor.coladd != wp->w_valid_cursor.coladd) |
7 | 504 { |
505 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL); | |
506 wp->w_valid_cursor.col = wp->w_cursor.col; | |
507 wp->w_valid_leftcol = wp->w_leftcol; | |
508 wp->w_valid_cursor.coladd = wp->w_cursor.coladd; | |
509 } | |
510 } | |
511 | |
512 /* | |
513 * Call this function when some window settings have changed, which require | |
514 * the cursor position, botline and topline to be recomputed and the window to | |
515 * be redrawn. E.g, when changing the 'wrap' option or folding. | |
516 */ | |
517 void | |
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518 changed_window_setting(void) |
7 | 519 { |
520 changed_window_setting_win(curwin); | |
521 } | |
522 | |
523 void | |
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524 changed_window_setting_win(win_T *wp) |
7 | 525 { |
526 wp->w_lines_valid = 0; | |
527 changed_line_abv_curs_win(wp); | |
528 wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP|VALID_TOPLINE); | |
529 redraw_win_later(wp, NOT_VALID); | |
530 } | |
531 | |
532 /* | |
533 * Set wp->w_topline to a certain number. | |
534 */ | |
535 void | |
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536 set_topline(win_T *wp, linenr_T lnum) |
7 | 537 { |
538 #ifdef FEAT_FOLDING | |
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539 // go to first of folded lines |
7 | 540 (void)hasFoldingWin(wp, lnum, &lnum, NULL, TRUE, NULL); |
541 #endif | |
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542 // Approximate the value of w_botline |
7 | 543 wp->w_botline += lnum - wp->w_topline; |
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544 if (wp->w_botline > wp->w_buffer->b_ml.ml_line_count + 1) |
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545 wp->w_botline = wp->w_buffer->b_ml.ml_line_count + 1; |
7 | 546 wp->w_topline = lnum; |
1744 | 547 wp->w_topline_was_set = TRUE; |
7 | 548 #ifdef FEAT_DIFF |
549 wp->w_topfill = 0; | |
550 #endif | |
551 wp->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_TOPLINE); | |
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552 // Don't set VALID_TOPLINE here, 'scrolloff' needs to be checked. |
7 | 553 redraw_later(VALID); |
554 } | |
555 | |
556 /* | |
557 * Call this function when the length of the cursor line (in screen | |
558 * characters) has changed, and the change is before the cursor. | |
559 * Need to take care of w_botline separately! | |
560 */ | |
561 void | |
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562 changed_cline_bef_curs(void) |
7 | 563 { |
564 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
565 |VALID_CHEIGHT|VALID_TOPLINE); | |
566 } | |
567 | |
568 void | |
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569 changed_cline_bef_curs_win(win_T *wp) |
7 | 570 { |
571 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
572 |VALID_CHEIGHT|VALID_TOPLINE); | |
573 } | |
574 | |
575 /* | |
576 * Call this function when the length of a line (in screen characters) above | |
577 * the cursor have changed. | |
578 * Need to take care of w_botline separately! | |
579 */ | |
580 void | |
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581 changed_line_abv_curs(void) |
7 | 582 { |
583 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
584 |VALID_CHEIGHT|VALID_TOPLINE); | |
585 } | |
586 | |
587 void | |
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588 changed_line_abv_curs_win(win_T *wp) |
7 | 589 { |
590 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
591 |VALID_CHEIGHT|VALID_TOPLINE); | |
592 } | |
593 | |
594 /* | |
595 * Make sure the value of curwin->w_botline is valid. | |
596 */ | |
597 void | |
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598 validate_botline(void) |
7 | 599 { |
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600 validate_botline_win(curwin); |
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601 } |
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602 |
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603 /* |
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604 * Make sure the value of wp->w_botline is valid. |
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605 */ |
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606 void |
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607 validate_botline_win(win_T *wp) |
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608 { |
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609 if (!(wp->w_valid & VALID_BOTLINE)) |
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610 comp_botline(wp); |
7 | 611 } |
612 | |
613 /* | |
614 * Mark curwin->w_botline as invalid (because of some change in the buffer). | |
615 */ | |
616 void | |
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617 invalidate_botline(void) |
7 | 618 { |
619 curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
620 } | |
621 | |
622 void | |
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623 invalidate_botline_win(win_T *wp) |
7 | 624 { |
625 wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
626 } | |
627 | |
628 void | |
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629 approximate_botline_win( |
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630 win_T *wp) |
7 | 631 { |
632 wp->w_valid &= ~VALID_BOTLINE; | |
633 } | |
634 | |
635 /* | |
636 * Return TRUE if curwin->w_wrow and curwin->w_wcol are valid. | |
637 */ | |
638 int | |
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639 cursor_valid(void) |
7 | 640 { |
641 check_cursor_moved(curwin); | |
642 return ((curwin->w_valid & (VALID_WROW|VALID_WCOL)) == | |
643 (VALID_WROW|VALID_WCOL)); | |
644 } | |
645 | |
646 /* | |
647 * Validate cursor position. Makes sure w_wrow and w_wcol are valid. | |
648 * w_topline must be valid, you may need to call update_topline() first! | |
649 */ | |
650 void | |
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651 validate_cursor(void) |
7 | 652 { |
653 check_cursor_moved(curwin); | |
654 if ((curwin->w_valid & (VALID_WCOL|VALID_WROW)) != (VALID_WCOL|VALID_WROW)) | |
655 curs_columns(TRUE); | |
656 } | |
657 | |
658 #if defined(FEAT_GUI) || defined(PROTO) | |
659 /* | |
660 * validate w_cline_row. | |
661 */ | |
662 void | |
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663 validate_cline_row(void) |
7 | 664 { |
665 /* | |
666 * First make sure that w_topline is valid (after moving the cursor). | |
667 */ | |
668 update_topline(); | |
669 check_cursor_moved(curwin); | |
670 if (!(curwin->w_valid & VALID_CROW)) | |
6441 | 671 curs_rows(curwin); |
7 | 672 } |
673 #endif | |
674 | |
675 /* | |
676 * Compute wp->w_cline_row and wp->w_cline_height, based on the current value | |
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677 * of wp->w_topline. |
7 | 678 */ |
679 static void | |
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680 curs_rows(win_T *wp) |
7 | 681 { |
682 linenr_T lnum; | |
683 int i; | |
684 int all_invalid; | |
685 int valid; | |
686 #ifdef FEAT_FOLDING | |
687 long fold_count; | |
688 #endif | |
689 | |
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690 // Check if wp->w_lines[].wl_size is invalid |
7 | 691 all_invalid = (!redrawing() |
692 || wp->w_lines_valid == 0 | |
693 || wp->w_lines[0].wl_lnum > wp->w_topline); | |
694 i = 0; | |
695 wp->w_cline_row = 0; | |
696 for (lnum = wp->w_topline; lnum < wp->w_cursor.lnum; ++i) | |
697 { | |
698 valid = FALSE; | |
699 if (!all_invalid && i < wp->w_lines_valid) | |
700 { | |
701 if (wp->w_lines[i].wl_lnum < lnum || !wp->w_lines[i].wl_valid) | |
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702 continue; // skip changed or deleted lines |
7 | 703 if (wp->w_lines[i].wl_lnum == lnum) |
704 { | |
705 #ifdef FEAT_FOLDING | |
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706 // Check for newly inserted lines below this row, in which |
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707 // case we need to check for folded lines. |
7 | 708 if (!wp->w_buffer->b_mod_set |
709 || wp->w_lines[i].wl_lastlnum < wp->w_cursor.lnum | |
710 || wp->w_buffer->b_mod_top | |
711 > wp->w_lines[i].wl_lastlnum + 1) | |
712 #endif | |
713 valid = TRUE; | |
714 } | |
715 else if (wp->w_lines[i].wl_lnum > lnum) | |
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716 --i; // hold at inserted lines |
7 | 717 } |
718 if (valid | |
719 #ifdef FEAT_DIFF | |
720 && (lnum != wp->w_topline || !wp->w_p_diff) | |
721 #endif | |
722 ) | |
723 { | |
724 #ifdef FEAT_FOLDING | |
725 lnum = wp->w_lines[i].wl_lastlnum + 1; | |
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726 // Cursor inside folded lines, don't count this row |
7 | 727 if (lnum > wp->w_cursor.lnum) |
728 break; | |
729 #else | |
730 ++lnum; | |
731 #endif | |
732 wp->w_cline_row += wp->w_lines[i].wl_size; | |
733 } | |
734 else | |
735 { | |
736 #ifdef FEAT_FOLDING | |
737 fold_count = foldedCount(wp, lnum, NULL); | |
738 if (fold_count) | |
739 { | |
740 lnum += fold_count; | |
741 if (lnum > wp->w_cursor.lnum) | |
742 break; | |
743 ++wp->w_cline_row; | |
744 } | |
745 else | |
746 #endif | |
747 #ifdef FEAT_DIFF | |
748 if (lnum == wp->w_topline) | |
749 wp->w_cline_row += plines_win_nofill(wp, lnum++, TRUE) | |
750 + wp->w_topfill; | |
751 else | |
752 #endif | |
753 wp->w_cline_row += plines_win(wp, lnum++, TRUE); | |
754 } | |
755 } | |
756 | |
757 check_cursor_moved(wp); | |
758 if (!(wp->w_valid & VALID_CHEIGHT)) | |
759 { | |
760 if (all_invalid | |
761 || i == wp->w_lines_valid | |
762 || (i < wp->w_lines_valid | |
763 && (!wp->w_lines[i].wl_valid | |
764 || wp->w_lines[i].wl_lnum != wp->w_cursor.lnum))) | |
765 { | |
766 #ifdef FEAT_DIFF | |
767 if (wp->w_cursor.lnum == wp->w_topline) | |
768 wp->w_cline_height = plines_win_nofill(wp, wp->w_cursor.lnum, | |
769 TRUE) + wp->w_topfill; | |
770 else | |
771 #endif | |
772 wp->w_cline_height = plines_win(wp, wp->w_cursor.lnum, TRUE); | |
773 #ifdef FEAT_FOLDING | |
774 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
775 NULL, NULL, TRUE, NULL); | |
776 #endif | |
777 } | |
778 else if (i > wp->w_lines_valid) | |
779 { | |
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780 // a line that is too long to fit on the last screen line |
7 | 781 wp->w_cline_height = 0; |
782 #ifdef FEAT_FOLDING | |
783 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
784 NULL, NULL, TRUE, NULL); | |
785 #endif | |
786 } | |
787 else | |
788 { | |
789 wp->w_cline_height = wp->w_lines[i].wl_size; | |
790 #ifdef FEAT_FOLDING | |
791 wp->w_cline_folded = wp->w_lines[i].wl_folded; | |
792 #endif | |
793 } | |
794 } | |
795 | |
5764 | 796 redraw_for_cursorline(curwin); |
7 | 797 wp->w_valid |= VALID_CROW|VALID_CHEIGHT; |
798 | |
799 } | |
800 | |
801 /* | |
802 * Validate curwin->w_virtcol only. | |
803 */ | |
804 void | |
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805 validate_virtcol(void) |
7 | 806 { |
807 validate_virtcol_win(curwin); | |
808 } | |
809 | |
810 /* | |
811 * Validate wp->w_virtcol only. | |
812 */ | |
813 void | |
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814 validate_virtcol_win(win_T *wp) |
7 | 815 { |
816 check_cursor_moved(wp); | |
817 if (!(wp->w_valid & VALID_VIRTCOL)) | |
818 { | |
819 getvvcol(wp, &wp->w_cursor, NULL, &(wp->w_virtcol), NULL); | |
820 wp->w_valid |= VALID_VIRTCOL; | |
740 | 821 #ifdef FEAT_SYN_HL |
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822 if (wp->w_p_cuc && !pum_visible()) |
740 | 823 redraw_win_later(wp, SOME_VALID); |
824 #endif | |
7 | 825 } |
826 } | |
827 | |
828 /* | |
829 * Validate curwin->w_cline_height only. | |
830 */ | |
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831 void |
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832 validate_cheight(void) |
7 | 833 { |
834 check_cursor_moved(curwin); | |
835 if (!(curwin->w_valid & VALID_CHEIGHT)) | |
836 { | |
837 #ifdef FEAT_DIFF | |
838 if (curwin->w_cursor.lnum == curwin->w_topline) | |
839 curwin->w_cline_height = plines_nofill(curwin->w_cursor.lnum) | |
840 + curwin->w_topfill; | |
841 else | |
842 #endif | |
843 curwin->w_cline_height = plines(curwin->w_cursor.lnum); | |
844 #ifdef FEAT_FOLDING | |
845 curwin->w_cline_folded = hasFolding(curwin->w_cursor.lnum, NULL, NULL); | |
846 #endif | |
847 curwin->w_valid |= VALID_CHEIGHT; | |
848 } | |
849 } | |
850 | |
851 /* | |
1668 | 852 * Validate w_wcol and w_virtcol only. |
7 | 853 */ |
854 void | |
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855 validate_cursor_col(void) |
7 | 856 { |
857 colnr_T off; | |
858 colnr_T col; | |
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859 int width; |
7 | 860 |
861 validate_virtcol(); | |
862 if (!(curwin->w_valid & VALID_WCOL)) | |
863 { | |
864 col = curwin->w_virtcol; | |
865 off = curwin_col_off(); | |
866 col += off; | |
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867 width = curwin->w_width - off + curwin_col_off2(); |
7 | 868 |
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869 // long line wrapping, adjust curwin->w_wrow |
1668 | 870 if (curwin->w_p_wrap |
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871 && col >= (colnr_T)curwin->w_width |
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872 && width > 0) |
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873 // use same formula as what is used in curs_columns() |
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874 col -= ((col - curwin->w_width) / width + 1) * width; |
1668 | 875 if (col > (int)curwin->w_leftcol) |
876 col -= curwin->w_leftcol; | |
877 else | |
878 col = 0; | |
7 | 879 curwin->w_wcol = col; |
1668 | 880 |
7 | 881 curwin->w_valid |= VALID_WCOL; |
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882 #ifdef FEAT_PROP_POPUP |
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883 curwin->w_flags &= ~WFLAG_WCOL_OFF_ADDED; |
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884 #endif |
7 | 885 } |
886 } | |
887 | |
888 /* | |
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889 * Compute offset of a window, occupied by absolute or relative line number, |
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890 * fold column and sign column (these don't move when scrolling horizontally). |
7 | 891 */ |
892 int | |
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893 win_col_off(win_T *wp) |
7 | 894 { |
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895 return (((wp->w_p_nu || wp->w_p_rnu) ? number_width(wp) + 1 : 0) |
7 | 896 #ifdef FEAT_CMDWIN |
897 + (cmdwin_type == 0 || wp != curwin ? 0 : 1) | |
898 #endif | |
899 #ifdef FEAT_FOLDING | |
900 + wp->w_p_fdc | |
901 #endif | |
902 #ifdef FEAT_SIGNS | |
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903 + (signcolumn_on(wp) ? 2 : 0) |
7 | 904 #endif |
905 ); | |
906 } | |
907 | |
908 int | |
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909 curwin_col_off(void) |
7 | 910 { |
911 return win_col_off(curwin); | |
912 } | |
913 | |
914 /* | |
915 * Return the difference in column offset for the second screen line of a | |
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916 * wrapped line. It's 8 if 'number' or 'relativenumber' is on and 'n' is in |
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917 * 'cpoptions'. |
7 | 918 */ |
919 int | |
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920 win_col_off2(win_T *wp) |
7 | 921 { |
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922 if ((wp->w_p_nu || wp->w_p_rnu) && vim_strchr(p_cpo, CPO_NUMCOL) != NULL) |
13 | 923 return number_width(wp) + 1; |
7 | 924 return 0; |
925 } | |
926 | |
927 int | |
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928 curwin_col_off2(void) |
7 | 929 { |
930 return win_col_off2(curwin); | |
931 } | |
932 | |
933 /* | |
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934 * Compute curwin->w_wcol and curwin->w_virtcol. |
7 | 935 * Also updates curwin->w_wrow and curwin->w_cline_row. |
936 * Also updates curwin->w_leftcol. | |
937 */ | |
938 void | |
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939 curs_columns( |
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940 int may_scroll) // when TRUE, may scroll horizontally |
7 | 941 { |
942 int diff; | |
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943 int extra; // offset for first screen line |
7 | 944 int off_left, off_right; |
945 int n; | |
946 int p_lines; | |
947 int width = 0; | |
948 int textwidth; | |
949 int new_leftcol; | |
950 colnr_T startcol; | |
951 colnr_T endcol; | |
952 colnr_T prev_skipcol; | |
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953 long so = get_scrolloff_value(); |
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954 long siso = get_sidescrolloff_value(); |
7 | 955 |
956 /* | |
957 * First make sure that w_topline is valid (after moving the cursor). | |
958 */ | |
959 update_topline(); | |
960 | |
961 /* | |
962 * Next make sure that w_cline_row is valid. | |
963 */ | |
964 if (!(curwin->w_valid & VALID_CROW)) | |
6441 | 965 curs_rows(curwin); |
7 | 966 |
967 /* | |
968 * Compute the number of virtual columns. | |
969 */ | |
970 #ifdef FEAT_FOLDING | |
971 if (curwin->w_cline_folded) | |
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972 // In a folded line the cursor is always in the first column |
7 | 973 startcol = curwin->w_virtcol = endcol = curwin->w_leftcol; |
974 else | |
975 #endif | |
976 getvvcol(curwin, &curwin->w_cursor, | |
977 &startcol, &(curwin->w_virtcol), &endcol); | |
978 | |
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979 // remove '$' from change command when cursor moves onto it |
7 | 980 if (startcol > dollar_vcol) |
3318 | 981 dollar_vcol = -1; |
7 | 982 |
983 extra = curwin_col_off(); | |
984 curwin->w_wcol = curwin->w_virtcol + extra; | |
985 endcol += extra; | |
986 | |
987 /* | |
988 * Now compute w_wrow, counting screen lines from w_cline_row. | |
989 */ | |
990 curwin->w_wrow = curwin->w_cline_row; | |
991 | |
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992 textwidth = curwin->w_width - extra; |
7 | 993 if (textwidth <= 0) |
994 { | |
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995 // No room for text, put cursor in last char of window. |
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996 curwin->w_wcol = curwin->w_width - 1; |
7 | 997 curwin->w_wrow = curwin->w_height - 1; |
998 } | |
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999 else if (curwin->w_p_wrap && curwin->w_width != 0) |
7 | 1000 { |
1001 width = textwidth + curwin_col_off2(); | |
1002 | |
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1003 // long line wrapping, adjust curwin->w_wrow |
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1004 if (curwin->w_wcol >= curwin->w_width) |
7 | 1005 { |
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patch 8.1.2284: compiler warning for unused variable
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|
1006 #ifdef FEAT_LINEBREAK |
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1007 char_u *sbr; |
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1008 #endif |
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1009 |
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|
1010 // this same formula is used in validate_cursor_col() |
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1011 n = (curwin->w_wcol - curwin->w_width) / width + 1; |
7 | 1012 curwin->w_wcol -= n * width; |
1013 curwin->w_wrow += n; | |
1014 | |
1015 #ifdef FEAT_LINEBREAK | |
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|
1016 // When cursor wraps to first char of next line in Insert |
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parents:
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|
1017 // mode, the 'showbreak' string isn't shown, backup to first |
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|
1018 // column |
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1019 sbr = get_showbreak_value(curwin); |
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1020 if (*sbr && *ml_get_cursor() == NUL |
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1021 && curwin->w_wcol == (int)vim_strsize(sbr)) |
7 | 1022 curwin->w_wcol = 0; |
1023 #endif | |
1024 } | |
1025 } | |
1026 | |
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1027 // No line wrapping: compute curwin->w_leftcol if scrolling is on and line |
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1028 // is not folded. |
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parents:
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changeset
|
1029 // If scrolling is off, curwin->w_leftcol is assumed to be 0 |
3263 | 1030 else if (may_scroll |
7 | 1031 #ifdef FEAT_FOLDING |
1032 && !curwin->w_cline_folded | |
1033 #endif | |
1034 ) | |
1035 { | |
1036 /* | |
1037 * If Cursor is left of the screen, scroll rightwards. | |
1038 * If Cursor is right of the screen, scroll leftwards | |
1039 * If we get closer to the edge than 'sidescrolloff', scroll a little | |
1040 * extra | |
1041 */ | |
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patch 8.1.0864: cannot have a local value for 'scrolloff' and 'sidescrolloff'
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|
1042 off_left = (int)startcol - (int)curwin->w_leftcol - siso; |
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1043 off_right = (int)endcol - (int)(curwin->w_leftcol + curwin->w_width |
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|
1044 - siso) + 1; |
7 | 1045 if (off_left < 0 || off_right > 0) |
1046 { | |
1047 if (off_left < 0) | |
1048 diff = -off_left; | |
1049 else | |
1050 diff = off_right; | |
1051 | |
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1052 // When far off or not enough room on either side, put cursor in |
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1053 // middle of window. |
7 | 1054 if (p_ss == 0 || diff >= textwidth / 2 || off_right >= off_left) |
1055 new_leftcol = curwin->w_wcol - extra - textwidth / 2; | |
1056 else | |
1057 { | |
1058 if (diff < p_ss) | |
1059 diff = p_ss; | |
1060 if (off_left < 0) | |
1061 new_leftcol = curwin->w_leftcol - diff; | |
1062 else | |
1063 new_leftcol = curwin->w_leftcol + diff; | |
1064 } | |
1065 if (new_leftcol < 0) | |
1066 new_leftcol = 0; | |
1067 if (new_leftcol != (int)curwin->w_leftcol) | |
1068 { | |
1069 curwin->w_leftcol = new_leftcol; | |
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|
1070 // screen has to be redrawn with new curwin->w_leftcol |
7 | 1071 redraw_later(NOT_VALID); |
1072 } | |
1073 } | |
1074 curwin->w_wcol -= curwin->w_leftcol; | |
1075 } | |
1076 else if (curwin->w_wcol > (int)curwin->w_leftcol) | |
1077 curwin->w_wcol -= curwin->w_leftcol; | |
1078 else | |
1079 curwin->w_wcol = 0; | |
1080 | |
1081 #ifdef FEAT_DIFF | |
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1082 // Skip over filler lines. At the top use w_topfill, there |
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|
1083 // may be some filler lines above the window. |
7 | 1084 if (curwin->w_cursor.lnum == curwin->w_topline) |
1085 curwin->w_wrow += curwin->w_topfill; | |
1086 else | |
1087 curwin->w_wrow += diff_check_fill(curwin, curwin->w_cursor.lnum); | |
1088 #endif | |
1089 | |
1090 prev_skipcol = curwin->w_skipcol; | |
1091 | |
1092 p_lines = 0; | |
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1093 |
7 | 1094 if ((curwin->w_wrow >= curwin->w_height |
1095 || ((prev_skipcol > 0 | |
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1096 || curwin->w_wrow + so >= curwin->w_height) |
7 | 1097 && (p_lines = |
1098 #ifdef FEAT_DIFF | |
1099 plines_win_nofill | |
1100 #else | |
1101 plines_win | |
1102 #endif | |
1103 (curwin, curwin->w_cursor.lnum, FALSE)) | |
1104 - 1 >= curwin->w_height)) | |
1105 && curwin->w_height != 0 | |
1106 && curwin->w_cursor.lnum == curwin->w_topline | |
1107 && width > 0 | |
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1108 && curwin->w_width != 0) |
7 | 1109 { |
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1110 // Cursor past end of screen. Happens with a single line that does |
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1111 // not fit on screen. Find a skipcol to show the text around the |
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1112 // cursor. Avoid scrolling all the time. compute value of "extra": |
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1113 // 1: Less than 'scrolloff' lines above |
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1114 // 2: Less than 'scrolloff' lines below |
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1115 // 3: both of them |
7 | 1116 extra = 0; |
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1117 if (curwin->w_skipcol + so * width > curwin->w_virtcol) |
7 | 1118 extra = 1; |
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1119 // Compute last display line of the buffer line that we want at the |
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|
1120 // bottom of the window. |
7 | 1121 if (p_lines == 0) |
1122 p_lines = plines_win(curwin, curwin->w_cursor.lnum, FALSE); | |
1123 --p_lines; | |
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1124 if (p_lines > curwin->w_wrow + so) |
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|
1125 n = curwin->w_wrow + so; |
7 | 1126 else |
1127 n = p_lines; | |
23905
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patch 8.2.2495: text jumps up and down when moving the cursor
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changeset
|
1128 if ((colnr_T)n >= curwin->w_height + curwin->w_skipcol / width - so) |
7 | 1129 extra += 2; |
1130 | |
23905
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patch 8.2.2495: text jumps up and down when moving the cursor
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|
1131 if (extra == 3 || p_lines <= so * 2) |
7 | 1132 { |
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|
1133 // not enough room for 'scrolloff', put cursor in the middle |
7 | 1134 n = curwin->w_virtcol / width; |
1135 if (n > curwin->w_height / 2) | |
1136 n -= curwin->w_height / 2; | |
1137 else | |
1138 n = 0; | |
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|
1139 // don't skip more than necessary |
7 | 1140 if (n > p_lines - curwin->w_height + 1) |
1141 n = p_lines - curwin->w_height + 1; | |
1142 curwin->w_skipcol = n * width; | |
1143 } | |
1144 else if (extra == 1) | |
1145 { | |
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|
1146 // less then 'scrolloff' lines above, decrease skipcol |
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changeset
|
1147 extra = (curwin->w_skipcol + so * width - curwin->w_virtcol |
7 | 1148 + width - 1) / width; |
1149 if (extra > 0) | |
1150 { | |
1151 if ((colnr_T)(extra * width) > curwin->w_skipcol) | |
1152 extra = curwin->w_skipcol / width; | |
1153 curwin->w_skipcol -= extra * width; | |
1154 } | |
1155 } | |
1156 else if (extra == 2) | |
1157 { | |
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|
1158 // less then 'scrolloff' lines below, increase skipcol |
7 | 1159 endcol = (n - curwin->w_height + 1) * width; |
1160 while (endcol > curwin->w_virtcol) | |
1161 endcol -= width; | |
1162 if (endcol > curwin->w_skipcol) | |
1163 curwin->w_skipcol = endcol; | |
1164 } | |
1165 | |
1166 curwin->w_wrow -= curwin->w_skipcol / width; | |
1167 if (curwin->w_wrow >= curwin->w_height) | |
1168 { | |
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1169 // small window, make sure cursor is in it |
7 | 1170 extra = curwin->w_wrow - curwin->w_height + 1; |
1171 curwin->w_skipcol += extra * width; | |
1172 curwin->w_wrow -= extra; | |
1173 } | |
1174 | |
1175 extra = ((int)prev_skipcol - (int)curwin->w_skipcol) / width; | |
1176 if (extra > 0) | |
1177 win_ins_lines(curwin, 0, extra, FALSE, FALSE); | |
1178 else if (extra < 0) | |
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changeset
|
1179 win_del_lines(curwin, 0, -extra, FALSE, FALSE, 0); |
7 | 1180 } |
1181 else | |
1182 curwin->w_skipcol = 0; | |
1183 if (prev_skipcol != curwin->w_skipcol) | |
1184 redraw_later(NOT_VALID); | |
1185 | |
740 | 1186 #ifdef FEAT_SYN_HL |
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1187 // Redraw when w_virtcol changes and 'cursorcolumn' is set |
5749 | 1188 if (curwin->w_p_cuc && (curwin->w_valid & VALID_VIRTCOL) == 0 |
17809
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patch 8.1.1901: the +insert_expand feature is not always available
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|
1189 && !pum_visible()) |
5749 | 1190 redraw_later(SOME_VALID); |
2178
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1191 #endif |
19542
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1192 #if defined(FEAT_PROP_POPUP) && defined(FEAT_TERMINAL) |
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1193 if (popup_is_popup(curwin) && curbuf->b_term != NULL) |
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1194 { |
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1195 curwin->w_wrow += popup_top_extra(curwin); |
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1196 curwin->w_wcol += popup_left_extra(curwin); |
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1197 curwin->w_flags |= WFLAG_WCOL_OFF_ADDED + WFLAG_WROW_OFF_ADDED; |
19542
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1198 } |
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1199 else |
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1200 curwin->w_flags &= ~(WFLAG_WCOL_OFF_ADDED + WFLAG_WROW_OFF_ADDED); |
19542
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1201 #endif |
740 | 1202 |
18621
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1203 // now w_leftcol is valid, avoid check_cursor_moved() thinking otherwise |
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1204 curwin->w_valid_leftcol = curwin->w_leftcol; |
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1205 |
7 | 1206 curwin->w_valid |= VALID_WCOL|VALID_WROW|VALID_VIRTCOL; |
1207 } | |
1208 | |
18763
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|
1209 #if (defined(FEAT_EVAL) || defined(FEAT_PROP_POPUP)) || defined(PROTO) |
17292
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|
1210 /* |
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1211 * Compute the screen position of text character at "pos" in window "wp" |
8a095d343c59
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1212 * The resulting values are one-based, zero when character is not visible. |
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1213 */ |
17863
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patch 8.1.1928: popup windows don't move with the text when making changes
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1214 void |
17292
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1215 textpos2screenpos( |
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1216 win_T *wp, |
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1217 pos_T *pos, |
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1218 int *rowp, // screen row |
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1219 int *scolp, // start screen column |
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1220 int *ccolp, // cursor screen column |
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1221 int *ecolp) // end screen column |
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1222 { |
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1223 colnr_T scol = 0, ccol = 0, ecol = 0; |
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1224 int row = 0; |
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1225 int rowoff = 0; |
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1226 colnr_T coloff = 0; |
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1227 |
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1228 if (pos->lnum >= wp->w_topline && pos->lnum < wp->w_botline) |
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1229 { |
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1230 colnr_T off; |
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1231 colnr_T col; |
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1232 int width; |
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1233 |
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1234 row = plines_m_win(wp, wp->w_topline, pos->lnum - 1) + 1; |
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1235 getvcol(wp, pos, &scol, &ccol, &ecol); |
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1236 |
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1237 // similar to what is done in validate_cursor_col() |
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1238 col = scol; |
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1239 off = win_col_off(wp); |
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1240 col += off; |
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1241 width = wp->w_width - off + win_col_off2(wp); |
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1242 |
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1243 // long line wrapping, adjust row |
17292
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1244 if (wp->w_p_wrap |
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1245 && col >= (colnr_T)wp->w_width |
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1246 && width > 0) |
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1247 { |
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1248 // use same formula as what is used in curs_columns() |
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1249 rowoff = ((col - wp->w_width) / width + 1); |
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1250 col -= rowoff * width; |
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1251 } |
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1252 col -= wp->w_leftcol; |
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|
1253 if (col >= wp->w_width) |
17292
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1254 col = -1; |
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1255 if (col >= 0) |
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1256 coloff = col - scol + wp->w_wincol + 1; |
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1257 else |
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1258 // character is left or right of the window |
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1259 row = scol = ccol = ecol = 0; |
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1260 } |
23213
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|
1261 *rowp = W_WINROW(wp) + row + rowoff; |
17292
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1262 *scolp = scol + coloff; |
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1263 *ccolp = ccol + coloff; |
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1264 *ecolp = ecol + coloff; |
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1265 } |
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|
1266 #endif |
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1267 |
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1268 #if defined(FEAT_EVAL) || defined(PROTO) |
17292
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1269 /* |
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1270 * "screenpos({winid}, {lnum}, {col})" function |
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1271 */ |
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1272 void |
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|
1273 f_screenpos(typval_T *argvars UNUSED, typval_T *rettv) |
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1274 { |
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1275 dict_T *dict; |
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1276 win_T *wp; |
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|
1277 pos_T pos; |
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|
1278 int row = 0; |
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|
1279 int scol = 0, ccol = 0, ecol = 0; |
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|
1280 |
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|
1281 if (rettv_dict_alloc(rettv) != OK) |
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|
1282 return; |
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|
1283 dict = rettv->vval.v_dict; |
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|
1284 |
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|
1285 wp = find_win_by_nr_or_id(&argvars[0]); |
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1286 if (wp == NULL) |
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|
1287 return; |
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|
1288 |
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|
1289 pos.lnum = tv_get_number(&argvars[1]); |
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1290 pos.col = tv_get_number(&argvars[2]) - 1; |
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1291 pos.coladd = 0; |
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1292 textpos2screenpos(wp, &pos, &row, &scol, &ccol, &ecol); |
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1293 |
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|
1294 dict_add_number(dict, "row", row); |
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1295 dict_add_number(dict, "col", scol); |
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1296 dict_add_number(dict, "curscol", ccol); |
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1297 dict_add_number(dict, "endcol", ecol); |
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1298 } |
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1299 #endif |
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1300 |
7 | 1301 /* |
1302 * Scroll the current window down by "line_count" logical lines. "CTRL-Y" | |
1303 */ | |
1304 void | |
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1305 scrolldown( |
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1306 long line_count, |
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1307 int byfold UNUSED) // TRUE: count a closed fold as one line |
7 | 1308 { |
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1309 long done = 0; // total # of physical lines done |
7 | 1310 int wrow; |
1311 int moved = FALSE; | |
1312 | |
1313 #ifdef FEAT_FOLDING | |
1314 linenr_T first; | |
1315 | |
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1316 // Make sure w_topline is at the first of a sequence of folded lines. |
7 | 1317 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
1318 #endif | |
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1319 validate_cursor(); // w_wrow needs to be valid |
7 | 1320 while (line_count-- > 0) |
1321 { | |
1322 #ifdef FEAT_DIFF | |
1980 | 1323 if (curwin->w_topfill < diff_check(curwin, curwin->w_topline) |
1324 && curwin->w_topfill < curwin->w_height - 1) | |
7 | 1325 { |
1326 ++curwin->w_topfill; | |
1327 ++done; | |
1328 } | |
1329 else | |
1330 #endif | |
1331 { | |
1332 if (curwin->w_topline == 1) | |
1333 break; | |
1334 --curwin->w_topline; | |
1335 #ifdef FEAT_DIFF | |
1336 curwin->w_topfill = 0; | |
1337 #endif | |
1338 #ifdef FEAT_FOLDING | |
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1339 // A sequence of folded lines only counts for one logical line |
7 | 1340 if (hasFolding(curwin->w_topline, &first, NULL)) |
1341 { | |
1342 ++done; | |
1343 if (!byfold) | |
1344 line_count -= curwin->w_topline - first - 1; | |
1345 curwin->w_botline -= curwin->w_topline - first; | |
1346 curwin->w_topline = first; | |
1347 } | |
1348 else | |
1349 #endif | |
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1350 done += PLINES_NOFILL(curwin->w_topline); |
7 | 1351 } |
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|
1352 --curwin->w_botline; // approximate w_botline |
7 | 1353 invalidate_botline(); |
1354 } | |
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1355 curwin->w_wrow += done; // keep w_wrow updated |
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1356 curwin->w_cline_row += done; // keep w_cline_row updated |
7 | 1357 |
1358 #ifdef FEAT_DIFF | |
1359 if (curwin->w_cursor.lnum == curwin->w_topline) | |
1360 curwin->w_cline_row = 0; | |
1361 check_topfill(curwin, TRUE); | |
1362 #endif | |
1363 | |
1364 /* | |
1365 * Compute the row number of the last row of the cursor line | |
1366 * and move the cursor onto the displayed part of the window. | |
1367 */ | |
1368 wrow = curwin->w_wrow; | |
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1369 if (curwin->w_p_wrap && curwin->w_width != 0) |
7 | 1370 { |
1371 validate_virtcol(); | |
1372 validate_cheight(); | |
1373 wrow += curwin->w_cline_height - 1 - | |
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1374 curwin->w_virtcol / curwin->w_width; |
7 | 1375 } |
1376 while (wrow >= curwin->w_height && curwin->w_cursor.lnum > 1) | |
1377 { | |
1378 #ifdef FEAT_FOLDING | |
1379 if (hasFolding(curwin->w_cursor.lnum, &first, NULL)) | |
1380 { | |
1381 --wrow; | |
1382 if (first == 1) | |
1383 curwin->w_cursor.lnum = 1; | |
1384 else | |
1385 curwin->w_cursor.lnum = first - 1; | |
1386 } | |
1387 else | |
1388 #endif | |
1389 wrow -= plines(curwin->w_cursor.lnum--); | |
1390 curwin->w_valid &= | |
1391 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
1392 moved = TRUE; | |
1393 } | |
1394 if (moved) | |
1395 { | |
1396 #ifdef FEAT_FOLDING | |
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1397 // Move cursor to first line of closed fold. |
7 | 1398 foldAdjustCursor(); |
1399 #endif | |
1400 coladvance(curwin->w_curswant); | |
1401 } | |
1402 } | |
1403 | |
1404 /* | |
1405 * Scroll the current window up by "line_count" logical lines. "CTRL-E" | |
1406 */ | |
1407 void | |
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|
1408 scrollup( |
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1409 long line_count, |
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1410 int byfold UNUSED) // TRUE: count a closed fold as one line |
7 | 1411 { |
1412 #if defined(FEAT_FOLDING) || defined(FEAT_DIFF) | |
1413 linenr_T lnum; | |
1414 | |
1415 if ( | |
1416 # ifdef FEAT_FOLDING | |
1417 (byfold && hasAnyFolding(curwin)) | |
1418 # ifdef FEAT_DIFF | |
1419 || | |
1420 # endif | |
1421 # endif | |
1422 # ifdef FEAT_DIFF | |
1423 curwin->w_p_diff | |
1424 # endif | |
1425 ) | |
1426 { | |
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1427 // count each sequence of folded lines as one logical line |
7 | 1428 lnum = curwin->w_topline; |
1429 while (line_count--) | |
1430 { | |
1431 # ifdef FEAT_DIFF | |
1432 if (curwin->w_topfill > 0) | |
1433 --curwin->w_topfill; | |
1434 else | |
1435 # endif | |
1436 { | |
1437 # ifdef FEAT_FOLDING | |
1438 if (byfold) | |
1439 (void)hasFolding(lnum, NULL, &lnum); | |
1440 # endif | |
1441 if (lnum >= curbuf->b_ml.ml_line_count) | |
1442 break; | |
1443 ++lnum; | |
1444 # ifdef FEAT_DIFF | |
1445 curwin->w_topfill = diff_check_fill(curwin, lnum); | |
1446 # endif | |
1447 } | |
1448 } | |
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1449 // approximate w_botline |
7 | 1450 curwin->w_botline += lnum - curwin->w_topline; |
1451 curwin->w_topline = lnum; | |
1452 } | |
1453 else | |
1454 #endif | |
1455 { | |
1456 curwin->w_topline += line_count; | |
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1457 curwin->w_botline += line_count; // approximate w_botline |
7 | 1458 } |
1459 | |
1460 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
1461 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
1462 if (curwin->w_botline > curbuf->b_ml.ml_line_count + 1) | |
1463 curwin->w_botline = curbuf->b_ml.ml_line_count + 1; | |
1464 | |
1465 #ifdef FEAT_DIFF | |
1466 check_topfill(curwin, FALSE); | |
1467 #endif | |
1468 | |
1469 #ifdef FEAT_FOLDING | |
1470 if (hasAnyFolding(curwin)) | |
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1471 // Make sure w_topline is at the first of a sequence of folded lines. |
7 | 1472 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
1473 #endif | |
1474 | |
1475 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
1476 if (curwin->w_cursor.lnum < curwin->w_topline) | |
1477 { | |
1478 curwin->w_cursor.lnum = curwin->w_topline; | |
1479 curwin->w_valid &= | |
1480 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
1481 coladvance(curwin->w_curswant); | |
1482 } | |
1483 } | |
1484 | |
1485 #ifdef FEAT_DIFF | |
1486 /* | |
1487 * Don't end up with too many filler lines in the window. | |
1488 */ | |
1489 void | |
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|
1490 check_topfill( |
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1491 win_T *wp, |
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|
1492 int down) // when TRUE scroll down when not enough space |
7 | 1493 { |
1494 int n; | |
1495 | |
1496 if (wp->w_topfill > 0) | |
1497 { | |
1498 n = plines_win_nofill(wp, wp->w_topline, TRUE); | |
1499 if (wp->w_topfill + n > wp->w_height) | |
1500 { | |
1501 if (down && wp->w_topline > 1) | |
1502 { | |
1503 --wp->w_topline; | |
1504 wp->w_topfill = 0; | |
1505 } | |
1506 else | |
1507 { | |
1508 wp->w_topfill = wp->w_height - n; | |
1509 if (wp->w_topfill < 0) | |
1510 wp->w_topfill = 0; | |
1511 } | |
1512 } | |
1513 } | |
1514 } | |
1515 | |
1516 /* | |
1517 * Use as many filler lines as possible for w_topline. Make sure w_topline | |
1518 * is still visible. | |
1519 */ | |
1520 static void | |
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|
1521 max_topfill(void) |
7 | 1522 { |
1523 int n; | |
1524 | |
1525 n = plines_nofill(curwin->w_topline); | |
1526 if (n >= curwin->w_height) | |
1527 curwin->w_topfill = 0; | |
1528 else | |
1529 { | |
1530 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
1531 if (curwin->w_topfill + n > curwin->w_height) | |
1532 curwin->w_topfill = curwin->w_height - n; | |
1533 } | |
1534 } | |
1535 #endif | |
1536 | |
1537 /* | |
1538 * Scroll the screen one line down, but don't do it if it would move the | |
1539 * cursor off the screen. | |
1540 */ | |
1541 void | |
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changeset
|
1542 scrolldown_clamp(void) |
7 | 1543 { |
1544 int end_row; | |
1545 #ifdef FEAT_DIFF | |
1546 int can_fill = (curwin->w_topfill | |
1547 < diff_check_fill(curwin, curwin->w_topline)); | |
1548 #endif | |
1549 | |
1550 if (curwin->w_topline <= 1 | |
1551 #ifdef FEAT_DIFF | |
1552 && !can_fill | |
1553 #endif | |
1554 ) | |
1555 return; | |
1556 | |
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|
1557 validate_cursor(); // w_wrow needs to be valid |
7 | 1558 |
1559 /* | |
1560 * Compute the row number of the last row of the cursor line | |
1561 * and make sure it doesn't go off the screen. Make sure the cursor | |
1562 * doesn't go past 'scrolloff' lines from the screen end. | |
1563 */ | |
1564 end_row = curwin->w_wrow; | |
1565 #ifdef FEAT_DIFF | |
1566 if (can_fill) | |
1567 ++end_row; | |
1568 else | |
1569 end_row += plines_nofill(curwin->w_topline - 1); | |
1570 #else | |
1571 end_row += plines(curwin->w_topline - 1); | |
1572 #endif | |
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1573 if (curwin->w_p_wrap && curwin->w_width != 0) |
7 | 1574 { |
1575 validate_cheight(); | |
1576 validate_virtcol(); | |
1577 end_row += curwin->w_cline_height - 1 - | |
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|
1578 curwin->w_virtcol / curwin->w_width; |
7 | 1579 } |
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|
1580 if (end_row < curwin->w_height - get_scrolloff_value()) |
7 | 1581 { |
1582 #ifdef FEAT_DIFF | |
1583 if (can_fill) | |
1584 { | |
1585 ++curwin->w_topfill; | |
1586 check_topfill(curwin, TRUE); | |
1587 } | |
1588 else | |
1589 { | |
1590 --curwin->w_topline; | |
1591 curwin->w_topfill = 0; | |
1592 } | |
1593 #else | |
1594 --curwin->w_topline; | |
1595 #endif | |
1596 #ifdef FEAT_FOLDING | |
7009 | 1597 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
7 | 1598 #endif |
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|
1599 --curwin->w_botline; // approximate w_botline |
7 | 1600 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); |
1601 } | |
1602 } | |
1603 | |
1604 /* | |
1605 * Scroll the screen one line up, but don't do it if it would move the cursor | |
1606 * off the screen. | |
1607 */ | |
1608 void | |
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changeset
|
1609 scrollup_clamp(void) |
7 | 1610 { |
1611 int start_row; | |
1612 | |
1613 if (curwin->w_topline == curbuf->b_ml.ml_line_count | |
1614 #ifdef FEAT_DIFF | |
1615 && curwin->w_topfill == 0 | |
1616 #endif | |
1617 ) | |
1618 return; | |
1619 | |
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changeset
|
1620 validate_cursor(); // w_wrow needs to be valid |
7 | 1621 |
1622 /* | |
1623 * Compute the row number of the first row of the cursor line | |
1624 * and make sure it doesn't go off the screen. Make sure the cursor | |
1625 * doesn't go before 'scrolloff' lines from the screen start. | |
1626 */ | |
1627 #ifdef FEAT_DIFF | |
1628 start_row = curwin->w_wrow - plines_nofill(curwin->w_topline) | |
1629 - curwin->w_topfill; | |
1630 #else | |
1631 start_row = curwin->w_wrow - plines(curwin->w_topline); | |
1632 #endif | |
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|
1633 if (curwin->w_p_wrap && curwin->w_width != 0) |
7 | 1634 { |
1635 validate_virtcol(); | |
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1636 start_row -= curwin->w_virtcol / curwin->w_width; |
7 | 1637 } |
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changeset
|
1638 if (start_row >= get_scrolloff_value()) |
7 | 1639 { |
1640 #ifdef FEAT_DIFF | |
1641 if (curwin->w_topfill > 0) | |
1642 --curwin->w_topfill; | |
1643 else | |
1644 #endif | |
36 | 1645 { |
1646 #ifdef FEAT_FOLDING | |
1647 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
1648 #endif | |
7 | 1649 ++curwin->w_topline; |
36 | 1650 } |
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|
1651 ++curwin->w_botline; // approximate w_botline |
7 | 1652 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); |
1653 } | |
1654 } | |
1655 | |
1656 /* | |
1657 * Add one line above "lp->lnum". This can be a filler line, a closed fold or | |
1658 * a (wrapped) text line. Uses and sets "lp->fill". | |
1659 * Returns the height of the added line in "lp->height". | |
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1660 * Lines above the first one are incredibly high: MAXCOL. |
7 | 1661 */ |
1662 static void | |
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diff
changeset
|
1663 topline_back(lineoff_T *lp) |
7 | 1664 { |
1665 #ifdef FEAT_DIFF | |
1666 if (lp->fill < diff_check_fill(curwin, lp->lnum)) | |
1667 { | |
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changeset
|
1668 // Add a filler line. |
7 | 1669 ++lp->fill; |
1670 lp->height = 1; | |
1671 } | |
1672 else | |
1673 #endif | |
1674 { | |
1675 --lp->lnum; | |
1676 #ifdef FEAT_DIFF | |
1677 lp->fill = 0; | |
1678 #endif | |
1679 if (lp->lnum < 1) | |
1680 lp->height = MAXCOL; | |
1681 else | |
1682 #ifdef FEAT_FOLDING | |
1683 if (hasFolding(lp->lnum, &lp->lnum, NULL)) | |
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|
1684 // Add a closed fold |
7 | 1685 lp->height = 1; |
1686 else | |
1687 #endif | |
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diff
changeset
|
1688 lp->height = PLINES_NOFILL(lp->lnum); |
7 | 1689 } |
1690 } | |
1691 | |
1692 /* | |
1693 * Add one line below "lp->lnum". This can be a filler line, a closed fold or | |
1694 * a (wrapped) text line. Uses and sets "lp->fill". | |
1695 * Returns the height of the added line in "lp->height". | |
1696 * Lines below the last one are incredibly high. | |
1697 */ | |
1698 static void | |
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diff
changeset
|
1699 botline_forw(lineoff_T *lp) |
7 | 1700 { |
1701 #ifdef FEAT_DIFF | |
1702 if (lp->fill < diff_check_fill(curwin, lp->lnum + 1)) | |
1703 { | |
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changeset
|
1704 // Add a filler line. |
7 | 1705 ++lp->fill; |
1706 lp->height = 1; | |
1707 } | |
1708 else | |
1709 #endif | |
1710 { | |
1711 ++lp->lnum; | |
1712 #ifdef FEAT_DIFF | |
1713 lp->fill = 0; | |
1714 #endif | |
1715 if (lp->lnum > curbuf->b_ml.ml_line_count) | |
1716 lp->height = MAXCOL; | |
1717 else | |
1718 #ifdef FEAT_FOLDING | |
1719 if (hasFolding(lp->lnum, NULL, &lp->lnum)) | |
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1720 // Add a closed fold |
7 | 1721 lp->height = 1; |
1722 else | |
1723 #endif | |
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diff
changeset
|
1724 lp->height = PLINES_NOFILL(lp->lnum); |
7 | 1725 } |
1726 } | |
1727 | |
1728 #ifdef FEAT_DIFF | |
1729 /* | |
1730 * Switch from including filler lines below lp->lnum to including filler | |
1731 * lines above loff.lnum + 1. This keeps pointing to the same line. | |
1732 * When there are no filler lines nothing changes. | |
1733 */ | |
1734 static void | |
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diff
changeset
|
1735 botline_topline(lineoff_T *lp) |
7 | 1736 { |
1737 if (lp->fill > 0) | |
1738 { | |
1739 ++lp->lnum; | |
1740 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
1741 } | |
1742 } | |
1743 | |
1744 /* | |
1745 * Switch from including filler lines above lp->lnum to including filler | |
1746 * lines below loff.lnum - 1. This keeps pointing to the same line. | |
1747 * When there are no filler lines nothing changes. | |
1748 */ | |
1749 static void | |
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diff
changeset
|
1750 topline_botline(lineoff_T *lp) |
7 | 1751 { |
1752 if (lp->fill > 0) | |
1753 { | |
1754 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
1755 --lp->lnum; | |
1756 } | |
1757 } | |
1758 #endif | |
1759 | |
1760 /* | |
1761 * Recompute topline to put the cursor at the top of the window. | |
1762 * Scroll at least "min_scroll" lines. | |
1763 * If "always" is TRUE, always set topline (for "zt"). | |
1764 */ | |
1765 void | |
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diff
changeset
|
1766 scroll_cursor_top(int min_scroll, int always) |
7 | 1767 { |
1768 int scrolled = 0; | |
1769 int extra = 0; | |
1770 int used; | |
1771 int i; | |
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|
1772 linenr_T top; // just above displayed lines |
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changeset
|
1773 linenr_T bot; // just below displayed lines |
7 | 1774 linenr_T old_topline = curwin->w_topline; |
1775 #ifdef FEAT_DIFF | |
1776 linenr_T old_topfill = curwin->w_topfill; | |
1777 #endif | |
1778 linenr_T new_topline; | |
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|
1779 int off = get_scrolloff_value(); |
7 | 1780 |
1781 if (mouse_dragging > 0) | |
1782 off = mouse_dragging - 1; | |
1783 | |
1784 /* | |
1785 * Decrease topline until: | |
1786 * - it has become 1 | |
1787 * - (part of) the cursor line is moved off the screen or | |
1788 * - moved at least 'scrolljump' lines and | |
1789 * - at least 'scrolloff' lines above and below the cursor | |
1790 */ | |
1791 validate_cheight(); | |
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1792 used = curwin->w_cline_height; // includes filler lines above |
7 | 1793 if (curwin->w_cursor.lnum < curwin->w_topline) |
1794 scrolled = used; | |
1795 | |
1796 #ifdef FEAT_FOLDING | |
1797 if (hasFolding(curwin->w_cursor.lnum, &top, &bot)) | |
1798 { | |
1799 --top; | |
1800 ++bot; | |
1801 } | |
1802 else | |
1803 #endif | |
1804 { | |
1805 top = curwin->w_cursor.lnum - 1; | |
1806 bot = curwin->w_cursor.lnum + 1; | |
1807 } | |
1808 new_topline = top + 1; | |
1809 | |
1810 #ifdef FEAT_DIFF | |
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|
1811 // "used" already contains the number of filler lines above, don't add it |
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|
1812 // again. |
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|
1813 // Hide filler lines above cursor line by adding them to "extra". |
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diff
changeset
|
1814 extra += diff_check_fill(curwin, curwin->w_cursor.lnum); |
7 | 1815 #endif |
1816 | |
1817 /* | |
1818 * Check if the lines from "top" to "bot" fit in the window. If they do, | |
1819 * set new_topline and advance "top" and "bot" to include more lines. | |
1820 */ | |
1821 while (top > 0) | |
1822 { | |
1823 #ifdef FEAT_FOLDING | |
1824 if (hasFolding(top, &top, NULL)) | |
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|
1825 // count one logical line for a sequence of folded lines |
7 | 1826 i = 1; |
1827 else | |
1828 #endif | |
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diff
changeset
|
1829 i = PLINES_NOFILL(top); |
7 | 1830 used += i; |
1831 if (extra + i <= off && bot < curbuf->b_ml.ml_line_count) | |
1832 { | |
1833 #ifdef FEAT_FOLDING | |
1834 if (hasFolding(bot, NULL, &bot)) | |
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|
1835 // count one logical line for a sequence of folded lines |
7 | 1836 ++used; |
1837 else | |
1838 #endif | |
1839 used += plines(bot); | |
1840 } | |
1841 if (used > curwin->w_height) | |
1842 break; | |
1843 if (top < curwin->w_topline) | |
1844 scrolled += i; | |
1845 | |
1846 /* | |
1847 * If scrolling is needed, scroll at least 'sj' lines. | |
1848 */ | |
1849 if ((new_topline >= curwin->w_topline || scrolled > min_scroll) | |
1850 && extra >= off) | |
1851 break; | |
1852 | |
1853 extra += i; | |
1854 new_topline = top; | |
1855 --top; | |
1856 ++bot; | |
1857 } | |
1858 | |
1859 /* | |
1860 * If we don't have enough space, put cursor in the middle. | |
1861 * This makes sure we get the same position when using "k" and "j" | |
1862 * in a small window. | |
1863 */ | |
1864 if (used > curwin->w_height) | |
1865 scroll_cursor_halfway(FALSE); | |
1866 else | |
1867 { | |
1868 /* | |
1869 * If "always" is FALSE, only adjust topline to a lower value, higher | |
1870 * value may happen with wrapping lines | |
1871 */ | |
1872 if (new_topline < curwin->w_topline || always) | |
1873 curwin->w_topline = new_topline; | |
1874 if (curwin->w_topline > curwin->w_cursor.lnum) | |
1875 curwin->w_topline = curwin->w_cursor.lnum; | |
1876 #ifdef FEAT_DIFF | |
1877 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
1878 if (curwin->w_topfill > 0 && extra > off) | |
1879 { | |
1880 curwin->w_topfill -= extra - off; | |
1881 if (curwin->w_topfill < 0) | |
1882 curwin->w_topfill = 0; | |
1883 } | |
1884 check_topfill(curwin, FALSE); | |
1885 #endif | |
1886 if (curwin->w_topline != old_topline | |
1887 #ifdef FEAT_DIFF | |
1888 || curwin->w_topfill != old_topfill | |
1889 #endif | |
1890 ) | |
1891 curwin->w_valid &= | |
1892 ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
1893 curwin->w_valid |= VALID_TOPLINE; | |
1894 } | |
1895 } | |
1896 | |
1897 /* | |
1898 * Set w_empty_rows and w_filler_rows for window "wp", having used up "used" | |
1899 * screen lines for text lines. | |
1900 */ | |
1901 void | |
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changeset
|
1902 set_empty_rows(win_T *wp, int used) |
7 | 1903 { |
1904 #ifdef FEAT_DIFF | |
1905 wp->w_filler_rows = 0; | |
1906 #endif | |
1907 if (used == 0) | |
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1908 wp->w_empty_rows = 0; // single line that doesn't fit |
7 | 1909 else |
1910 { | |
1911 wp->w_empty_rows = wp->w_height - used; | |
1912 #ifdef FEAT_DIFF | |
1913 if (wp->w_botline <= wp->w_buffer->b_ml.ml_line_count) | |
1914 { | |
1915 wp->w_filler_rows = diff_check_fill(wp, wp->w_botline); | |
1916 if (wp->w_empty_rows > wp->w_filler_rows) | |
1917 wp->w_empty_rows -= wp->w_filler_rows; | |
1918 else | |
1919 { | |
1920 wp->w_filler_rows = wp->w_empty_rows; | |
1921 wp->w_empty_rows = 0; | |
1922 } | |
1923 } | |
1924 #endif | |
1925 } | |
1926 } | |
1927 | |
1928 /* | |
1929 * Recompute topline to put the cursor at the bottom of the window. | |
1930 * Scroll at least "min_scroll" lines. | |
1931 * If "set_topbot" is TRUE, set topline and botline first (for "zb"). | |
1932 * This is messy stuff!!! | |
1933 */ | |
1934 void | |
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changeset
|
1935 scroll_cursor_bot(int min_scroll, int set_topbot) |
7 | 1936 { |
1937 int used; | |
1938 int scrolled = 0; | |
1939 int extra = 0; | |
1940 int i; | |
1941 linenr_T line_count; | |
1942 linenr_T old_topline = curwin->w_topline; | |
1943 lineoff_T loff; | |
1944 lineoff_T boff; | |
1945 #ifdef FEAT_DIFF | |
1946 int old_topfill = curwin->w_topfill; | |
1947 int fill_below_window; | |
1948 #endif | |
1949 linenr_T old_botline = curwin->w_botline; | |
1950 linenr_T old_valid = curwin->w_valid; | |
1951 int old_empty_rows = curwin->w_empty_rows; | |
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1952 linenr_T cln; // Cursor Line Number |
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|
1953 long so = get_scrolloff_value(); |
7 | 1954 |
1955 cln = curwin->w_cursor.lnum; | |
1956 if (set_topbot) | |
1957 { | |
1958 used = 0; | |
1959 curwin->w_botline = cln + 1; | |
1960 #ifdef FEAT_DIFF | |
1961 loff.fill = 0; | |
1962 #endif | |
1963 for (curwin->w_topline = curwin->w_botline; | |
1964 curwin->w_topline > 1; | |
1965 curwin->w_topline = loff.lnum) | |
1966 { | |
1967 loff.lnum = curwin->w_topline; | |
1968 topline_back(&loff); | |
2082
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1969 if (loff.height == MAXCOL || used + loff.height > curwin->w_height) |
7 | 1970 break; |
1971 used += loff.height; | |
1972 #ifdef FEAT_DIFF | |
1973 curwin->w_topfill = loff.fill; | |
1974 #endif | |
1975 } | |
1976 set_empty_rows(curwin, used); | |
1977 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
1978 if (curwin->w_topline != old_topline | |
1979 #ifdef FEAT_DIFF | |
1980 || curwin->w_topfill != old_topfill | |
1981 #endif | |
1982 ) | |
1983 curwin->w_valid &= ~(VALID_WROW|VALID_CROW); | |
1984 } | |
1985 else | |
1986 validate_botline(); | |
1987 | |
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1988 // The lines of the cursor line itself are always used. |
7 | 1989 #ifdef FEAT_DIFF |
1990 used = plines_nofill(cln); | |
1991 #else | |
1992 validate_cheight(); | |
1993 used = curwin->w_cline_height; | |
1994 #endif | |
1995 | |
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|
1996 // If the cursor is below botline, we will at least scroll by the height |
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|
1997 // of the cursor line. Correct for empty lines, which are really part of |
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changeset
|
1998 // botline. |
7 | 1999 if (cln >= curwin->w_botline) |
2000 { | |
2001 scrolled = used; | |
2002 if (cln == curwin->w_botline) | |
2003 scrolled -= curwin->w_empty_rows; | |
2004 } | |
2005 | |
2006 /* | |
2007 * Stop counting lines to scroll when | |
2008 * - hitting start of the file | |
2009 * - scrolled nothing or at least 'sj' lines | |
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changeset
|
2010 * - at least 'scrolloff' lines below the cursor |
7 | 2011 * - lines between botline and cursor have been counted |
2012 */ | |
2013 #ifdef FEAT_FOLDING | |
2014 if (!hasFolding(curwin->w_cursor.lnum, &loff.lnum, &boff.lnum)) | |
2015 #endif | |
2016 { | |
2017 loff.lnum = cln; | |
2018 boff.lnum = cln; | |
2019 } | |
2020 #ifdef FEAT_DIFF | |
2021 loff.fill = 0; | |
2022 boff.fill = 0; | |
2023 fill_below_window = diff_check_fill(curwin, curwin->w_botline) | |
2024 - curwin->w_filler_rows; | |
2025 #endif | |
2026 | |
2027 while (loff.lnum > 1) | |
2028 { | |
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|
2029 // Stop when scrolled nothing or at least "min_scroll", found "extra" |
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changeset
|
2030 // context for 'scrolloff' and counted all lines below the window. |
7 | 2031 if ((((scrolled <= 0 || scrolled >= min_scroll) |
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changeset
|
2032 && extra >= (mouse_dragging > 0 ? mouse_dragging - 1 : so)) |
7 | 2033 || boff.lnum + 1 > curbuf->b_ml.ml_line_count) |
2034 && loff.lnum <= curwin->w_botline | |
2035 #ifdef FEAT_DIFF | |
2036 && (loff.lnum < curwin->w_botline | |
2037 || loff.fill >= fill_below_window) | |
2038 #endif | |
2039 ) | |
2040 break; | |
2041 | |
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|
2042 // Add one line above |
7 | 2043 topline_back(&loff); |
2082
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|
2044 if (loff.height == MAXCOL) |
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|
2045 used = MAXCOL; |
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|
2046 else |
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|
2047 used += loff.height; |
7 | 2048 if (used > curwin->w_height) |
2049 break; | |
2050 if (loff.lnum >= curwin->w_botline | |
2051 #ifdef FEAT_DIFF | |
2052 && (loff.lnum > curwin->w_botline | |
2053 || loff.fill <= fill_below_window) | |
2054 #endif | |
2055 ) | |
2056 { | |
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|
2057 // Count screen lines that are below the window. |
7 | 2058 scrolled += loff.height; |
2059 if (loff.lnum == curwin->w_botline | |
2060 #ifdef FEAT_DIFF | |
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|
2061 && loff.fill == 0 |
7 | 2062 #endif |
2063 ) | |
2064 scrolled -= curwin->w_empty_rows; | |
2065 } | |
2066 | |
2067 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
2068 { | |
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changeset
|
2069 // Add one line below |
7 | 2070 botline_forw(&boff); |
2071 used += boff.height; | |
2072 if (used > curwin->w_height) | |
2073 break; | |
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2074 if (extra < ( mouse_dragging > 0 ? mouse_dragging - 1 : so) |
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changeset
|
2075 || scrolled < min_scroll) |
7 | 2076 { |
2077 extra += boff.height; | |
2078 if (boff.lnum >= curwin->w_botline | |
2079 #ifdef FEAT_DIFF | |
2080 || (boff.lnum + 1 == curwin->w_botline | |
2081 && boff.fill > curwin->w_filler_rows) | |
2082 #endif | |
2083 ) | |
2084 { | |
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|
2085 // Count screen lines that are below the window. |
7 | 2086 scrolled += boff.height; |
2087 if (boff.lnum == curwin->w_botline | |
2088 #ifdef FEAT_DIFF | |
2089 && boff.fill == 0 | |
2090 #endif | |
2091 ) | |
2092 scrolled -= curwin->w_empty_rows; | |
2093 } | |
2094 } | |
2095 } | |
2096 } | |
2097 | |
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2098 // curwin->w_empty_rows is larger, no need to scroll |
7 | 2099 if (scrolled <= 0) |
2100 line_count = 0; | |
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|
2101 // more than a screenfull, don't scroll but redraw |
7 | 2102 else if (used > curwin->w_height) |
2103 line_count = used; | |
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|
2104 // scroll minimal number of lines |
7 | 2105 else |
2106 { | |
2107 line_count = 0; | |
2108 #ifdef FEAT_DIFF | |
2109 boff.fill = curwin->w_topfill; | |
2110 #endif | |
2111 boff.lnum = curwin->w_topline - 1; | |
2112 for (i = 0; i < scrolled && boff.lnum < curwin->w_botline; ) | |
2113 { | |
2114 botline_forw(&boff); | |
2115 i += boff.height; | |
2116 ++line_count; | |
2117 } | |
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|
2118 if (i < scrolled) // below curwin->w_botline, don't scroll |
7 | 2119 line_count = 9999; |
2120 } | |
2121 | |
2122 /* | |
2123 * Scroll up if the cursor is off the bottom of the screen a bit. | |
2124 * Otherwise put it at 1/2 of the screen. | |
2125 */ | |
2126 if (line_count >= curwin->w_height && line_count > min_scroll) | |
2127 scroll_cursor_halfway(FALSE); | |
2128 else | |
2129 scrollup(line_count, TRUE); | |
2130 | |
2131 /* | |
2132 * If topline didn't change we need to restore w_botline and w_empty_rows | |
2133 * (we changed them). | |
2134 * If topline did change, update_screen() will set botline. | |
2135 */ | |
2136 if (curwin->w_topline == old_topline && set_topbot) | |
2137 { | |
2138 curwin->w_botline = old_botline; | |
2139 curwin->w_empty_rows = old_empty_rows; | |
2140 curwin->w_valid = old_valid; | |
2141 } | |
2142 curwin->w_valid |= VALID_TOPLINE; | |
2143 } | |
2144 | |
2145 /* | |
2146 * Recompute topline to put the cursor halfway the window | |
2147 * If "atend" is TRUE, also put it halfway at the end of the file. | |
2148 */ | |
2149 void | |
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diff
changeset
|
2150 scroll_cursor_halfway(int atend) |
7 | 2151 { |
2152 int above = 0; | |
2153 linenr_T topline; | |
2154 #ifdef FEAT_DIFF | |
2155 int topfill = 0; | |
2156 #endif | |
2157 int below = 0; | |
2158 int used; | |
2159 lineoff_T loff; | |
2160 lineoff_T boff; | |
5661 | 2161 #ifdef FEAT_DIFF |
5653 | 2162 linenr_T old_topline = curwin->w_topline; |
5661 | 2163 #endif |
7 | 2164 |
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|
2165 #ifdef FEAT_PROP_POPUP |
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|
2166 // if the width changed this needs to be updated first |
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|
2167 may_update_popup_position(); |
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|
2168 #endif |
7 | 2169 loff.lnum = boff.lnum = curwin->w_cursor.lnum; |
2170 #ifdef FEAT_FOLDING | |
2171 (void)hasFolding(loff.lnum, &loff.lnum, &boff.lnum); | |
2172 #endif | |
2173 #ifdef FEAT_DIFF | |
2174 used = plines_nofill(loff.lnum); | |
2175 loff.fill = 0; | |
2176 boff.fill = 0; | |
2177 #else | |
2178 used = plines(loff.lnum); | |
2179 #endif | |
2180 topline = loff.lnum; | |
2181 while (topline > 1) | |
2182 { | |
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diff
changeset
|
2183 if (below <= above) // add a line below the cursor first |
7 | 2184 { |
2185 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
2186 { | |
2187 botline_forw(&boff); | |
2188 used += boff.height; | |
2189 if (used > curwin->w_height) | |
2190 break; | |
2191 below += boff.height; | |
2192 } | |
2193 else | |
2194 { | |
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diff
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|
2195 ++below; // count a "~" line |
7 | 2196 if (atend) |
2197 ++used; | |
2198 } | |
2199 } | |
2200 | |
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changeset
|
2201 if (below > above) // add a line above the cursor |
7 | 2202 { |
2203 topline_back(&loff); | |
2082
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|
2204 if (loff.height == MAXCOL) |
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|
2205 used = MAXCOL; |
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|
2206 else |
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|
2207 used += loff.height; |
7 | 2208 if (used > curwin->w_height) |
2209 break; | |
2210 above += loff.height; | |
2211 topline = loff.lnum; | |
2212 #ifdef FEAT_DIFF | |
2213 topfill = loff.fill; | |
2214 #endif | |
2215 } | |
2216 } | |
2217 #ifdef FEAT_FOLDING | |
2218 if (!hasFolding(topline, &curwin->w_topline, NULL)) | |
2219 #endif | |
2220 curwin->w_topline = topline; | |
2221 #ifdef FEAT_DIFF | |
2222 curwin->w_topfill = topfill; | |
5653 | 2223 if (old_topline > curwin->w_topline + curwin->w_height) |
2224 curwin->w_botfill = FALSE; | |
7 | 2225 check_topfill(curwin, FALSE); |
2226 #endif | |
2227 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
2228 curwin->w_valid |= VALID_TOPLINE; | |
2229 } | |
2230 | |
2231 /* | |
2232 * Correct the cursor position so that it is in a part of the screen at least | |
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changeset
|
2233 * 'scrolloff' lines from the top and bottom, if possible. |
7 | 2234 * If not possible, put it at the same position as scroll_cursor_halfway(). |
2235 * When called topline must be valid! | |
2236 */ | |
2237 void | |
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Christian Brabandt <cb@256bit.org>
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7803
diff
changeset
|
2238 cursor_correct(void) |
7 | 2239 { |
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|
2240 int above = 0; // screen lines above topline |
7 | 2241 linenr_T topline; |
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|
2242 int below = 0; // screen lines below botline |
7 | 2243 linenr_T botline; |
2244 int above_wanted, below_wanted; | |
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|
2245 linenr_T cln; // Cursor Line Number |
7 | 2246 int max_off; |
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changeset
|
2247 long so = get_scrolloff_value(); |
7 | 2248 |
2249 /* | |
2250 * How many lines we would like to have above/below the cursor depends on | |
2251 * whether the first/last line of the file is on screen. | |
2252 */ | |
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|
2253 above_wanted = so; |
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|
2254 below_wanted = so; |
1121 | 2255 if (mouse_dragging > 0) |
7 | 2256 { |
2257 above_wanted = mouse_dragging - 1; | |
2258 below_wanted = mouse_dragging - 1; | |
2259 } | |
2260 if (curwin->w_topline == 1) | |
2261 { | |
2262 above_wanted = 0; | |
2263 max_off = curwin->w_height / 2; | |
2264 if (below_wanted > max_off) | |
2265 below_wanted = max_off; | |
2266 } | |
2267 validate_botline(); | |
2268 if (curwin->w_botline == curbuf->b_ml.ml_line_count + 1 | |
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diff
changeset
|
2269 && mouse_dragging == 0) |
7 | 2270 { |
2271 below_wanted = 0; | |
2272 max_off = (curwin->w_height - 1) / 2; | |
2273 if (above_wanted > max_off) | |
2274 above_wanted = max_off; | |
2275 } | |
2276 | |
2277 /* | |
2278 * If there are sufficient file-lines above and below the cursor, we can | |
2279 * return now. | |
2280 */ | |
2281 cln = curwin->w_cursor.lnum; | |
2282 if (cln >= curwin->w_topline + above_wanted | |
2283 && cln < curwin->w_botline - below_wanted | |
2284 #ifdef FEAT_FOLDING | |
2285 && !hasAnyFolding(curwin) | |
2286 #endif | |
2287 ) | |
2288 return; | |
2289 | |
2290 /* | |
2291 * Narrow down the area where the cursor can be put by taking lines from | |
2292 * the top and the bottom until: | |
2293 * - the desired context lines are found | |
2294 * - the lines from the top is past the lines from the bottom | |
2295 */ | |
2296 topline = curwin->w_topline; | |
2297 botline = curwin->w_botline - 1; | |
2298 #ifdef FEAT_DIFF | |
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changeset
|
2299 // count filler lines as context |
7 | 2300 above = curwin->w_topfill; |
2301 below = curwin->w_filler_rows; | |
2302 #endif | |
2303 while ((above < above_wanted || below < below_wanted) && topline < botline) | |
2304 { | |
2305 if (below < below_wanted && (below <= above || above >= above_wanted)) | |
2306 { | |
2307 #ifdef FEAT_FOLDING | |
2308 if (hasFolding(botline, &botline, NULL)) | |
2309 ++below; | |
2310 else | |
2311 #endif | |
2312 below += plines(botline); | |
2313 --botline; | |
2314 } | |
2315 if (above < above_wanted && (above < below || below >= below_wanted)) | |
2316 { | |
2317 #ifdef FEAT_FOLDING | |
2318 if (hasFolding(topline, NULL, &topline)) | |
2319 ++above; | |
2320 else | |
2321 #endif | |
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commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
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parents:
7088
diff
changeset
|
2322 above += PLINES_NOFILL(topline); |
84d318257a45
commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
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diff
changeset
|
2323 #ifdef FEAT_DIFF |
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|
2324 // Count filler lines below this line as context. |
7 | 2325 if (topline < botline) |
2326 above += diff_check_fill(curwin, topline + 1); | |
2327 #endif | |
2328 ++topline; | |
2329 } | |
2330 } | |
2331 if (topline == botline || botline == 0) | |
2332 curwin->w_cursor.lnum = topline; | |
2333 else if (topline > botline) | |
2334 curwin->w_cursor.lnum = botline; | |
2335 else | |
2336 { | |
2337 if (cln < topline && curwin->w_topline > 1) | |
2338 { | |
2339 curwin->w_cursor.lnum = topline; | |
2340 curwin->w_valid &= | |
2341 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
2342 } | |
2343 if (cln > botline && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
2344 { | |
2345 curwin->w_cursor.lnum = botline; | |
2346 curwin->w_valid &= | |
2347 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
2348 } | |
2349 } | |
2350 curwin->w_valid |= VALID_TOPLINE; | |
2351 } | |
2352 | |
7803
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commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
Christian Brabandt <cb@256bit.org>
parents:
7103
diff
changeset
|
2353 static void get_scroll_overlap(lineoff_T *lp, int dir); |
7 | 2354 |
2355 /* | |
2356 * move screen 'count' pages up or down and update screen | |
2357 * | |
2358 * return FAIL for failure, OK otherwise | |
2359 */ | |
2360 int | |
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7803
diff
changeset
|
2361 onepage(int dir, long count) |
7 | 2362 { |
2363 long n; | |
2364 int retval = OK; | |
2365 lineoff_T loff; | |
2366 linenr_T old_topline = curwin->w_topline; | |
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|
2367 long so = get_scrolloff_value(); |
7 | 2368 |
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changeset
|
2369 if (curbuf->b_ml.ml_line_count == 1) // nothing to do |
7 | 2370 { |
2371 beep_flush(); | |
2372 return FAIL; | |
2373 } | |
2374 | |
2375 for ( ; count > 0; --count) | |
2376 { | |
2377 validate_botline(); | |
2378 /* | |
2379 * It's an error to move a page up when the first line is already on | |
2380 * the screen. It's an error to move a page down when the last line | |
2381 * is on the screen and the topline is 'scrolloff' lines from the | |
2382 * last line. | |
2383 */ | |
2384 if (dir == FORWARD | |
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|
2385 ? ((curwin->w_topline >= curbuf->b_ml.ml_line_count - so) |
7 | 2386 && curwin->w_botline > curbuf->b_ml.ml_line_count) |
2387 : (curwin->w_topline == 1 | |
2388 #ifdef FEAT_DIFF | |
2389 && curwin->w_topfill == | |
2390 diff_check_fill(curwin, curwin->w_topline) | |
2391 #endif | |
2392 )) | |
2393 { | |
2394 beep_flush(); | |
2395 retval = FAIL; | |
2396 break; | |
2397 } | |
2398 | |
2399 #ifdef FEAT_DIFF | |
2400 loff.fill = 0; | |
2401 #endif | |
2402 if (dir == FORWARD) | |
2403 { | |
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Christian Brabandt <cb@256bit.org>
parents:
10295
diff
changeset
|
2404 if (ONE_WINDOW && p_window > 0 && p_window < Rows - 1) |
7 | 2405 { |
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changeset
|
2406 // Vi compatible scrolling |
164 | 2407 if (p_window <= 2) |
2408 ++curwin->w_topline; | |
2409 else | |
2410 curwin->w_topline += p_window - 2; | |
2411 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
2412 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
2413 curwin->w_cursor.lnum = curwin->w_topline; | |
2414 } | |
2415 else if (curwin->w_botline > curbuf->b_ml.ml_line_count) | |
2416 { | |
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|
2417 // at end of file |
7 | 2418 curwin->w_topline = curbuf->b_ml.ml_line_count; |
2419 #ifdef FEAT_DIFF | |
2420 curwin->w_topfill = 0; | |
2421 #endif | |
2422 curwin->w_valid &= ~(VALID_WROW|VALID_CROW); | |
2423 } | |
2424 else | |
2425 { | |
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changeset
|
2426 // For the overlap, start with the line just below the window |
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changeset
|
2427 // and go upwards. |
7 | 2428 loff.lnum = curwin->w_botline; |
2429 #ifdef FEAT_DIFF | |
2430 loff.fill = diff_check_fill(curwin, loff.lnum) | |
2431 - curwin->w_filler_rows; | |
2432 #endif | |
2433 get_scroll_overlap(&loff, -1); | |
2434 curwin->w_topline = loff.lnum; | |
2435 #ifdef FEAT_DIFF | |
2436 curwin->w_topfill = loff.fill; | |
2437 check_topfill(curwin, FALSE); | |
2438 #endif | |
2439 curwin->w_cursor.lnum = curwin->w_topline; | |
2440 curwin->w_valid &= ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW| | |
2441 VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
2442 } | |
2443 } | |
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|
2444 else // dir == BACKWARDS |
7 | 2445 { |
2446 #ifdef FEAT_DIFF | |
2447 if (curwin->w_topline == 1) | |
2448 { | |
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changeset
|
2449 // Include max number of filler lines |
7 | 2450 max_topfill(); |
2451 continue; | |
2452 } | |
2453 #endif | |
10349
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commit https://github.com/vim/vim/commit/a1f4cb93ba50ea9e40cd4b1f5592b8a6d1398660
Christian Brabandt <cb@256bit.org>
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diff
changeset
|
2454 if (ONE_WINDOW && p_window > 0 && p_window < Rows - 1) |
164 | 2455 { |
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changeset
|
2456 // Vi compatible scrolling (sort of) |
164 | 2457 if (p_window <= 2) |
2458 --curwin->w_topline; | |
2459 else | |
2460 curwin->w_topline -= p_window - 2; | |
2461 if (curwin->w_topline < 1) | |
2462 curwin->w_topline = 1; | |
2463 curwin->w_cursor.lnum = curwin->w_topline + p_window - 1; | |
2464 if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count) | |
2465 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; | |
2466 continue; | |
2467 } | |
2468 | |
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|
2469 // Find the line at the top of the window that is going to be the |
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changeset
|
2470 // line at the bottom of the window. Make sure this results in |
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changeset
|
2471 // the same line as before doing CTRL-F. |
7 | 2472 loff.lnum = curwin->w_topline - 1; |
2473 #ifdef FEAT_DIFF | |
2474 loff.fill = diff_check_fill(curwin, loff.lnum + 1) | |
2475 - curwin->w_topfill; | |
2476 #endif | |
2477 get_scroll_overlap(&loff, 1); | |
2478 | |
2479 if (loff.lnum >= curbuf->b_ml.ml_line_count) | |
2480 { | |
2481 loff.lnum = curbuf->b_ml.ml_line_count; | |
2482 #ifdef FEAT_DIFF | |
2483 loff.fill = 0; | |
2484 } | |
2485 else | |
2486 { | |
2487 botline_topline(&loff); | |
2488 #endif | |
2489 } | |
2490 curwin->w_cursor.lnum = loff.lnum; | |
2491 | |
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2492 // Find the line just above the new topline to get the right line |
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|
2493 // at the bottom of the window. |
7 | 2494 n = 0; |
2495 while (n <= curwin->w_height && loff.lnum >= 1) | |
2496 { | |
2497 topline_back(&loff); | |
2082
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2498 if (loff.height == MAXCOL) |
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|
2499 n = MAXCOL; |
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2500 else |
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|
2501 n += loff.height; |
7 | 2502 } |
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changeset
|
2503 if (loff.lnum < 1) // at begin of file |
7 | 2504 { |
2505 curwin->w_topline = 1; | |
2506 #ifdef FEAT_DIFF | |
2507 max_topfill(); | |
2508 #endif | |
2509 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
2510 } | |
2511 else | |
2512 { | |
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changeset
|
2513 // Go two lines forward again. |
7 | 2514 #ifdef FEAT_DIFF |
2515 topline_botline(&loff); | |
2516 #endif | |
2517 botline_forw(&loff); | |
2518 botline_forw(&loff); | |
2519 #ifdef FEAT_DIFF | |
2520 botline_topline(&loff); | |
2521 #endif | |
2522 #ifdef FEAT_FOLDING | |
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|
2523 // We're at the wrong end of a fold now. |
7 | 2524 (void)hasFolding(loff.lnum, &loff.lnum, NULL); |
2525 #endif | |
2526 | |
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|
2527 // Always scroll at least one line. Avoid getting stuck on |
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changeset
|
2528 // very long lines. |
7 | 2529 if (loff.lnum >= curwin->w_topline |
2530 #ifdef FEAT_DIFF | |
2531 && (loff.lnum > curwin->w_topline | |
2532 || loff.fill >= curwin->w_topfill) | |
2533 #endif | |
2534 ) | |
2535 { | |
2536 #ifdef FEAT_DIFF | |
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parents:
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diff
changeset
|
2537 // First try using the maximum number of filler lines. If |
80b40bd5ec1a
patch 8.2.0026: still some /* */ comments
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parents:
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diff
changeset
|
2538 // that's not enough, backup one line. |
7 | 2539 loff.fill = curwin->w_topfill; |
2540 if (curwin->w_topfill < diff_check_fill(curwin, | |
2541 curwin->w_topline)) | |
2542 max_topfill(); | |
2543 if (curwin->w_topfill == loff.fill) | |
2544 #endif | |
2545 { | |
2546 --curwin->w_topline; | |
2547 #ifdef FEAT_DIFF | |
2548 curwin->w_topfill = 0; | |
2549 #endif | |
2550 } | |
2551 comp_botline(curwin); | |
2552 curwin->w_cursor.lnum = curwin->w_botline - 1; | |
5764 | 2553 curwin->w_valid &= |
2554 ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW|VALID_CROW); | |
7 | 2555 } |
2556 else | |
2557 { | |
2558 curwin->w_topline = loff.lnum; | |
2559 #ifdef FEAT_DIFF | |
2560 curwin->w_topfill = loff.fill; | |
2561 check_topfill(curwin, FALSE); | |
2562 #endif | |
2563 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
2564 } | |
2565 } | |
2566 } | |
2567 } | |
2568 #ifdef FEAT_FOLDING | |
2569 foldAdjustCursor(); | |
2570 #endif | |
2571 cursor_correct(); | |
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b80ad55d62d8
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Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
2572 check_cursor_col(); |
161 | 2573 if (retval == OK) |
2574 beginline(BL_SOL | BL_FIX); | |
7 | 2575 curwin->w_valid &= ~(VALID_WCOL|VALID_WROW|VALID_VIRTCOL); |
2576 | |
14317
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parents:
13384
diff
changeset
|
2577 if (retval == OK && dir == FORWARD) |
7 | 2578 { |
14317
1bc96dbb5498
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parents:
13384
diff
changeset
|
2579 // Avoid the screen jumping up and down when 'scrolloff' is non-zero. |
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
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parents:
13384
diff
changeset
|
2580 // But make sure we scroll at least one line (happens with mix of long |
1bc96dbb5498
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parents:
13384
diff
changeset
|
2581 // wrapping lines and non-wrapping line). |
1bc96dbb5498
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parents:
13384
diff
changeset
|
2582 if (check_top_offset()) |
1bc96dbb5498
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parents:
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diff
changeset
|
2583 { |
1bc96dbb5498
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parents:
13384
diff
changeset
|
2584 scroll_cursor_top(1, FALSE); |
1bc96dbb5498
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parents:
13384
diff
changeset
|
2585 if (curwin->w_topline <= old_topline |
7 | 2586 && old_topline < curbuf->b_ml.ml_line_count) |
14317
1bc96dbb5498
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parents:
13384
diff
changeset
|
2587 { |
1bc96dbb5498
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parents:
13384
diff
changeset
|
2588 curwin->w_topline = old_topline + 1; |
7 | 2589 #ifdef FEAT_FOLDING |
14317
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2590 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
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parents:
13384
diff
changeset
|
2591 #endif |
1bc96dbb5498
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parents:
13384
diff
changeset
|
2592 } |
1bc96dbb5498
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parents:
13384
diff
changeset
|
2593 } |
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parents:
13384
diff
changeset
|
2594 #ifdef FEAT_FOLDING |
1bc96dbb5498
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13384
diff
changeset
|
2595 else if (curwin->w_botline > curbuf->b_ml.ml_line_count) |
7 | 2596 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
2597 #endif | |
2598 } | |
2599 | |
2600 redraw_later(VALID); | |
2601 return retval; | |
2602 } | |
2603 | |
2604 /* | |
2605 * Decide how much overlap to use for page-up or page-down scrolling. | |
2606 * This is symmetric, so that doing both keeps the same lines displayed. | |
2607 * Three lines are examined: | |
2608 * | |
2609 * before CTRL-F after CTRL-F / before CTRL-B | |
2610 * etc. l1 | |
2611 * l1 last but one line ------------ | |
2612 * l2 last text line l2 top text line | |
2613 * ------------- l3 second text line | |
2614 * l3 etc. | |
2615 */ | |
2616 static void | |
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2617 get_scroll_overlap(lineoff_T *lp, int dir) |
7 | 2618 { |
2619 int h1, h2, h3, h4; | |
2620 int min_height = curwin->w_height - 2; | |
2621 lineoff_T loff0, loff1, loff2; | |
2622 | |
2623 #ifdef FEAT_DIFF | |
2624 if (lp->fill > 0) | |
2625 lp->height = 1; | |
2626 else | |
2627 lp->height = plines_nofill(lp->lnum); | |
2628 #else | |
2629 lp->height = plines(lp->lnum); | |
2630 #endif | |
2631 h1 = lp->height; | |
2632 if (h1 > min_height) | |
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parents:
18892
diff
changeset
|
2633 return; // no overlap |
7 | 2634 |
2635 loff0 = *lp; | |
2636 if (dir > 0) | |
2637 botline_forw(lp); | |
2638 else | |
2639 topline_back(lp); | |
2640 h2 = lp->height; | |
3968 | 2641 if (h2 == MAXCOL || h2 + h1 > min_height) |
7 | 2642 { |
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parents:
18892
diff
changeset
|
2643 *lp = loff0; // no overlap |
7 | 2644 return; |
2645 } | |
2646 | |
2647 loff1 = *lp; | |
2648 if (dir > 0) | |
2649 botline_forw(lp); | |
2650 else | |
2651 topline_back(lp); | |
2652 h3 = lp->height; | |
3968 | 2653 if (h3 == MAXCOL || h3 + h2 > min_height) |
7 | 2654 { |
18931
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Bram Moolenaar <Bram@vim.org>
parents:
18892
diff
changeset
|
2655 *lp = loff0; // no overlap |
7 | 2656 return; |
2657 } | |
2658 | |
2659 loff2 = *lp; | |
2660 if (dir > 0) | |
2661 botline_forw(lp); | |
2662 else | |
2663 topline_back(lp); | |
2664 h4 = lp->height; | |
3968 | 2665 if (h4 == MAXCOL || h4 + h3 + h2 > min_height || h3 + h2 + h1 > min_height) |
18931
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parents:
18892
diff
changeset
|
2666 *lp = loff1; // 1 line overlap |
7 | 2667 else |
18931
80b40bd5ec1a
patch 8.2.0026: still some /* */ comments
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parents:
18892
diff
changeset
|
2668 *lp = loff2; // 2 lines overlap |
7 | 2669 return; |
2670 } | |
2671 | |
2672 /* | |
2673 * Scroll 'scroll' lines up or down. | |
2674 */ | |
2675 void | |
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2676 halfpage(int flag, linenr_T Prenum) |
7 | 2677 { |
2678 long scrolled = 0; | |
2679 int i; | |
2680 int n; | |
2681 int room; | |
2682 | |
2683 if (Prenum) | |
2684 curwin->w_p_scr = (Prenum > curwin->w_height) ? | |
2685 curwin->w_height : Prenum; | |
2686 n = (curwin->w_p_scr <= curwin->w_height) ? | |
2687 curwin->w_p_scr : curwin->w_height; | |
2688 | |
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patch 8.0.0515: ml_get errors in silent Ex mode
Christian Brabandt <cb@256bit.org>
parents:
11121
diff
changeset
|
2689 update_topline(); |
7 | 2690 validate_botline(); |
2691 room = curwin->w_empty_rows; | |
2692 #ifdef FEAT_DIFF | |
2693 room += curwin->w_filler_rows; | |
2694 #endif | |
2695 if (flag) | |
2696 { | |
2697 /* | |
2698 * scroll the text up | |
2699 */ | |
2700 while (n > 0 && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
2701 { | |
2702 #ifdef FEAT_DIFF | |
2703 if (curwin->w_topfill > 0) | |
2704 { | |
2705 i = 1; | |
21321
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Bram Moolenaar <Bram@vim.org>
parents:
21134
diff
changeset
|
2706 --n; |
7 | 2707 --curwin->w_topfill; |
2708 } | |
2709 else | |
2710 #endif | |
2711 { | |
7103
84d318257a45
commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2712 i = PLINES_NOFILL(curwin->w_topline); |
7 | 2713 n -= i; |
2714 if (n < 0 && scrolled > 0) | |
2715 break; | |
2716 #ifdef FEAT_FOLDING | |
2717 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
2718 #endif | |
2719 ++curwin->w_topline; | |
2720 #ifdef FEAT_DIFF | |
2721 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
2722 #endif | |
2723 | |
2724 if (curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
2725 { | |
2726 ++curwin->w_cursor.lnum; | |
2727 curwin->w_valid &= | |
2728 ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
2729 } | |
2730 } | |
2731 curwin->w_valid &= ~(VALID_CROW|VALID_WROW); | |
2732 scrolled += i; | |
2733 | |
2734 /* | |
2735 * Correct w_botline for changed w_topline. | |
2736 * Won't work when there are filler lines. | |
2737 */ | |
2738 #ifdef FEAT_DIFF | |
2739 if (curwin->w_p_diff) | |
2740 curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
2741 else | |
2742 #endif | |
2743 { | |
2744 room += i; | |
2745 do | |
2746 { | |
2747 i = plines(curwin->w_botline); | |
2748 if (i > room) | |
2749 break; | |
2750 #ifdef FEAT_FOLDING | |
2751 (void)hasFolding(curwin->w_botline, NULL, | |
2752 &curwin->w_botline); | |
2753 #endif | |
2754 ++curwin->w_botline; | |
2755 room -= i; | |
2756 } while (curwin->w_botline <= curbuf->b_ml.ml_line_count); | |
2757 } | |
2758 } | |
2759 | |
2760 /* | |
2761 * When hit bottom of the file: move cursor down. | |
2762 */ | |
2763 if (n > 0) | |
2764 { | |
2765 # ifdef FEAT_FOLDING | |
2766 if (hasAnyFolding(curwin)) | |
2767 { | |
2768 while (--n >= 0 | |
2769 && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
2770 { | |
2771 (void)hasFolding(curwin->w_cursor.lnum, NULL, | |
2772 &curwin->w_cursor.lnum); | |
2773 ++curwin->w_cursor.lnum; | |
2774 } | |
2775 } | |
2776 else | |
2777 # endif | |
2778 curwin->w_cursor.lnum += n; | |
2779 check_cursor_lnum(); | |
2780 } | |
2781 } | |
2782 else | |
2783 { | |
2784 /* | |
2785 * scroll the text down | |
2786 */ | |
2787 while (n > 0 && curwin->w_topline > 1) | |
2788 { | |
2789 #ifdef FEAT_DIFF | |
2790 if (curwin->w_topfill < diff_check_fill(curwin, curwin->w_topline)) | |
2791 { | |
2792 i = 1; | |
16042
7952be788a49
patch 8.1.1026: unused condition
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parents:
15713
diff
changeset
|
2793 --n; |
7 | 2794 ++curwin->w_topfill; |
2795 } | |
2796 else | |
2797 #endif | |
2798 { | |
7103
84d318257a45
commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2799 i = PLINES_NOFILL(curwin->w_topline - 1); |
7 | 2800 n -= i; |
2801 if (n < 0 && scrolled > 0) | |
2802 break; | |
2803 --curwin->w_topline; | |
2804 #ifdef FEAT_FOLDING | |
2805 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
2806 #endif | |
2807 #ifdef FEAT_DIFF | |
2808 curwin->w_topfill = 0; | |
2809 #endif | |
2810 } | |
2811 curwin->w_valid &= ~(VALID_CROW|VALID_WROW| | |
2812 VALID_BOTLINE|VALID_BOTLINE_AP); | |
2813 scrolled += i; | |
2814 if (curwin->w_cursor.lnum > 1) | |
2815 { | |
2816 --curwin->w_cursor.lnum; | |
2817 curwin->w_valid &= ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
2818 } | |
2819 } | |
16042
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parents:
15713
diff
changeset
|
2820 |
7 | 2821 /* |
2822 * When hit top of the file: move cursor up. | |
2823 */ | |
2824 if (n > 0) | |
2825 { | |
2826 if (curwin->w_cursor.lnum <= (linenr_T)n) | |
2827 curwin->w_cursor.lnum = 1; | |
2828 else | |
2829 # ifdef FEAT_FOLDING | |
2830 if (hasAnyFolding(curwin)) | |
2831 { | |
2832 while (--n >= 0 && curwin->w_cursor.lnum > 1) | |
2833 { | |
2834 --curwin->w_cursor.lnum; | |
2835 (void)hasFolding(curwin->w_cursor.lnum, | |
2836 &curwin->w_cursor.lnum, NULL); | |
2837 } | |
2838 } | |
2839 else | |
2840 # endif | |
2841 curwin->w_cursor.lnum -= n; | |
2842 } | |
2843 } | |
2844 # ifdef FEAT_FOLDING | |
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parents:
18892
diff
changeset
|
2845 // Move cursor to first line of closed fold. |
7 | 2846 foldAdjustCursor(); |
2847 # endif | |
2848 #ifdef FEAT_DIFF | |
2849 check_topfill(curwin, !flag); | |
2850 #endif | |
2851 cursor_correct(); | |
2852 beginline(BL_SOL | BL_FIX); | |
2853 redraw_later(VALID); | |
2854 } | |
2250
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diff
changeset
|
2855 |
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diff
changeset
|
2856 void |
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2857 do_check_cursorbind(void) |
2250
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|
2858 { |
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parents:
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diff
changeset
|
2859 linenr_T line = curwin->w_cursor.lnum; |
3415 | 2860 colnr_T col = curwin->w_cursor.col; |
2861 colnr_T coladd = curwin->w_cursor.coladd; | |
3433 | 2862 colnr_T curswant = curwin->w_curswant; |
2863 int set_curswant = curwin->w_set_curswant; | |
2250
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|
2864 win_T *old_curwin = curwin; |
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diff
changeset
|
2865 buf_T *old_curbuf = curbuf; |
2693 | 2866 int restart_edit_save; |
2250
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2867 int old_VIsual_select = VIsual_select; |
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|
2868 int old_VIsual_active = VIsual_active; |
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2869 |
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2870 /* |
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changeset
|
2871 * loop through the cursorbound windows |
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changeset
|
2872 */ |
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changeset
|
2873 VIsual_select = VIsual_active = 0; |
9649
fd9727ae3c49
commit https://github.com/vim/vim/commit/2932359000b2f918d5fade79ea4d124d5943cd07
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parents:
8643
diff
changeset
|
2874 FOR_ALL_WINDOWS(curwin) |
2250
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2875 { |
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changeset
|
2876 curbuf = curwin->w_buffer; |
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diff
changeset
|
2877 // skip original window and windows with 'noscrollbind' |
2250
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|
2878 if (curwin != old_curwin && curwin->w_p_crb) |
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2879 { |
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2880 # ifdef FEAT_DIFF |
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2881 if (curwin->w_p_diff) |
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commit https://github.com/vim/vim/commit/025e3e0bafbc85cc4e365145af711edf99d0a90d
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parents:
10102
diff
changeset
|
2882 curwin->w_cursor.lnum = |
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commit https://github.com/vim/vim/commit/025e3e0bafbc85cc4e365145af711edf99d0a90d
Christian Brabandt <cb@256bit.org>
parents:
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2883 diff_get_corresponding_line(old_curbuf, line); |
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Add the conceal patch from Vince Negri.
Bram Moolenaar <bram@vim.org>
parents:
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diff
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2884 else |
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parents:
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2885 # endif |
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parents:
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2886 curwin->w_cursor.lnum = line; |
1bac28a53fae
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Bram Moolenaar <bram@vim.org>
parents:
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2887 curwin->w_cursor.col = col; |
3415 | 2888 curwin->w_cursor.coladd = coladd; |
3433 | 2889 curwin->w_curswant = curswant; |
2890 curwin->w_set_curswant = set_curswant; | |
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Bram Moolenaar <bram@vim.org>
parents:
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2891 |
18931
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patch 8.2.0026: still some /* */ comments
Bram Moolenaar <Bram@vim.org>
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2892 // Make sure the cursor is in a valid position. Temporarily set |
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patch 8.2.0026: still some /* */ comments
Bram Moolenaar <Bram@vim.org>
parents:
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2893 // "restart_edit" to allow the cursor to be beyond the EOL. |
2693 | 2894 restart_edit_save = restart_edit; |
2895 restart_edit = TRUE; | |
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parents:
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2896 check_cursor(); |
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2897 # ifdef FEAT_SYN_HL |
10597
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patch 8.0.0188: redrawing for 'cursorbind' is inefficient
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2898 if (curwin->w_p_cul || curwin->w_p_cuc) |
10583
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patch 8.0.0181: with cursorbind set cursor column highlighting is off
Christian Brabandt <cb@256bit.org>
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2899 validate_cursor(); |
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2900 # endif |
2693 | 2901 restart_edit = restart_edit_save; |
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parents:
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2902 // Correct cursor for multi-byte character. |
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parents:
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2903 if (has_mbyte) |
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Bram Moolenaar <bram@vim.org>
parents:
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2904 mb_adjust_cursor(); |
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Christian Brabandt <cb@256bit.org>
parents:
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2905 redraw_later(VALID); |
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Bram Moolenaar <bram@vim.org>
parents:
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2906 |
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Bram Moolenaar <Bram@vim.org>
parents:
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2907 // Only scroll when 'scrollbind' hasn't done this. |
2688 | 2908 if (!curwin->w_p_scb) |
2909 update_topline(); | |
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parents:
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2910 curwin->w_redr_status = TRUE; |
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parents:
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2911 } |
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Bram Moolenaar <bram@vim.org>
parents:
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2912 } |
1bac28a53fae
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Bram Moolenaar <bram@vim.org>
parents:
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2913 |
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parents:
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2914 /* |
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parents:
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2915 * reset current-window |
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Bram Moolenaar <bram@vim.org>
parents:
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2916 */ |
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parents:
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2917 VIsual_select = old_VIsual_select; |
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Bram Moolenaar <bram@vim.org>
parents:
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2918 VIsual_active = old_VIsual_active; |
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Bram Moolenaar <bram@vim.org>
parents:
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2919 curwin = old_curwin; |
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Bram Moolenaar <bram@vim.org>
parents:
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2920 curbuf = old_curbuf; |
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parents:
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2921 } |