Bram Moolenaar | edf3f97 | 2016-08-29 22:49:24 +0200 | [diff] [blame] | 1 | /* vi:set ts=8 sts=4 sw=4 noet: |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 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 | |
Bram Moolenaar | 92b8b2d | 2016-01-29 22:36:45 +0100 | [diff] [blame] | 22 | static int scrolljump_value(void); |
| 23 | static int check_top_offset(void); |
| 24 | static void curs_rows(win_T *wp); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 25 | |
| 26 | typedef struct |
| 27 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 28 | linenr_T lnum; // line number |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 29 | #ifdef FEAT_DIFF |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 30 | int fill; // filler lines |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 31 | #endif |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 32 | int height; // height of added line |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 33 | } lineoff_T; |
| 34 | |
Bram Moolenaar | 92b8b2d | 2016-01-29 22:36:45 +0100 | [diff] [blame] | 35 | static void topline_back(lineoff_T *lp); |
| 36 | static void botline_forw(lineoff_T *lp); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 37 | |
| 38 | /* |
Bram Moolenaar | f6196f4 | 2022-10-02 21:29:55 +0100 | [diff] [blame] | 39 | * Reduce "n" for the screen lines skipped with "wp->w_skipcol". |
| 40 | */ |
| 41 | static int |
| 42 | adjust_plines_for_skipcol(win_T *wp, int n) |
| 43 | { |
| 44 | if (wp->w_skipcol == 0) |
| 45 | return n; |
| 46 | |
| 47 | int off = 0; |
| 48 | int width = wp->w_width - win_col_off(wp); |
| 49 | if (wp->w_skipcol >= width) |
| 50 | { |
| 51 | ++off; |
| 52 | int skip = wp->w_skipcol - width; |
Bram Moolenaar | b6aab8f | 2022-10-03 20:01:16 +0100 | [diff] [blame] | 53 | width += win_col_off2(wp); |
Bram Moolenaar | f6196f4 | 2022-10-02 21:29:55 +0100 | [diff] [blame] | 54 | while (skip >= width) |
| 55 | { |
| 56 | ++off; |
| 57 | skip -= width; |
| 58 | } |
| 59 | } |
| 60 | wp->w_valid &= ~VALID_WROW; |
| 61 | return n - off; |
| 62 | } |
| 63 | |
| 64 | /* |
Bram Moolenaar | d5337ef | 2022-10-20 20:15:47 +0100 | [diff] [blame] | 65 | * Return how many lines "lnum" will take on the screen, taking into account |
| 66 | * whether it is the first line, whether w_skipcol is non-zero and limiting to |
| 67 | * the window height. |
| 68 | */ |
| 69 | static int |
| 70 | plines_correct_topline(win_T *wp, linenr_T lnum) |
| 71 | { |
| 72 | int n; |
| 73 | #ifdef FEAT_DIFF |
| 74 | if (lnum == wp->w_topline) |
| 75 | n = plines_win_nofill(wp, lnum, FALSE) + wp->w_topfill; |
| 76 | else |
| 77 | #endif |
| 78 | n = plines_win(wp, lnum, FALSE); |
| 79 | if (lnum == wp->w_topline) |
| 80 | n = adjust_plines_for_skipcol(wp, n); |
| 81 | if (n > wp->w_height) |
| 82 | n = wp->w_height; |
| 83 | return n; |
| 84 | } |
| 85 | |
| 86 | /* |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 87 | * Compute wp->w_botline for the current wp->w_topline. Can be called after |
| 88 | * wp->w_topline changed. |
| 89 | */ |
| 90 | static void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 91 | comp_botline(win_T *wp) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 92 | { |
| 93 | int n; |
| 94 | linenr_T lnum; |
| 95 | int done; |
| 96 | #ifdef FEAT_FOLDING |
| 97 | linenr_T last; |
| 98 | int folded; |
| 99 | #endif |
| 100 | |
| 101 | /* |
| 102 | * If w_cline_row is valid, start there. |
| 103 | * Otherwise have to start at w_topline. |
| 104 | */ |
| 105 | check_cursor_moved(wp); |
| 106 | if (wp->w_valid & VALID_CROW) |
| 107 | { |
| 108 | lnum = wp->w_cursor.lnum; |
| 109 | done = wp->w_cline_row; |
| 110 | } |
| 111 | else |
| 112 | { |
| 113 | lnum = wp->w_topline; |
| 114 | done = 0; |
| 115 | } |
| 116 | |
| 117 | for ( ; lnum <= wp->w_buffer->b_ml.ml_line_count; ++lnum) |
| 118 | { |
| 119 | #ifdef FEAT_FOLDING |
| 120 | last = lnum; |
| 121 | folded = FALSE; |
| 122 | if (hasFoldingWin(wp, lnum, NULL, &last, TRUE, NULL)) |
| 123 | { |
| 124 | n = 1; |
| 125 | folded = TRUE; |
| 126 | } |
| 127 | else |
| 128 | #endif |
Bram Moolenaar | f6196f4 | 2022-10-02 21:29:55 +0100 | [diff] [blame] | 129 | { |
Bram Moolenaar | d5337ef | 2022-10-20 20:15:47 +0100 | [diff] [blame] | 130 | n = plines_correct_topline(wp, lnum); |
Bram Moolenaar | f6196f4 | 2022-10-02 21:29:55 +0100 | [diff] [blame] | 131 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 132 | if ( |
| 133 | #ifdef FEAT_FOLDING |
| 134 | lnum <= wp->w_cursor.lnum && last >= wp->w_cursor.lnum |
| 135 | #else |
| 136 | lnum == wp->w_cursor.lnum |
| 137 | #endif |
| 138 | ) |
| 139 | { |
| 140 | wp->w_cline_row = done; |
| 141 | wp->w_cline_height = n; |
| 142 | #ifdef FEAT_FOLDING |
| 143 | wp->w_cline_folded = folded; |
| 144 | #endif |
Bram Moolenaar | 3d6db14 | 2014-03-28 21:49:32 +0100 | [diff] [blame] | 145 | redraw_for_cursorline(wp); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 146 | wp->w_valid |= (VALID_CROW|VALID_CHEIGHT); |
| 147 | } |
| 148 | if (done + n > wp->w_height) |
| 149 | break; |
| 150 | done += n; |
| 151 | #ifdef FEAT_FOLDING |
| 152 | lnum = last; |
| 153 | #endif |
| 154 | } |
| 155 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 156 | // wp->w_botline is the line that is just below the window |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 157 | wp->w_botline = lnum; |
| 158 | wp->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; |
| 159 | |
| 160 | set_empty_rows(wp, done); |
| 161 | } |
| 162 | |
| 163 | /* |
Bram Moolenaar | 3d6db14 | 2014-03-28 21:49:32 +0100 | [diff] [blame] | 164 | * Redraw when w_cline_row changes and 'relativenumber' or 'cursorline' is |
| 165 | * set. |
| 166 | */ |
Bram Moolenaar | bbb5f8d | 2019-01-31 13:22:32 +0100 | [diff] [blame] | 167 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 168 | redraw_for_cursorline(win_T *wp) |
Bram Moolenaar | 3d6db14 | 2014-03-28 21:49:32 +0100 | [diff] [blame] | 169 | { |
| 170 | if ((wp->w_p_rnu |
| 171 | #ifdef FEAT_SYN_HL |
| 172 | || wp->w_p_cul |
| 173 | #endif |
| 174 | ) |
| 175 | && (wp->w_valid & VALID_CROW) == 0 |
Bram Moolenaar | e2c453d | 2019-08-21 14:37:09 +0200 | [diff] [blame] | 176 | && !pum_visible()) |
Bram Moolenaar | 90a9979 | 2018-09-12 21:52:18 +0200 | [diff] [blame] | 177 | { |
zeertzjq | c20e46a | 2022-03-23 14:55:23 +0000 | [diff] [blame] | 178 | // win_line() will redraw the number column and cursorline only. |
Bram Moolenaar | a4d158b | 2022-08-14 14:17:45 +0100 | [diff] [blame] | 179 | redraw_win_later(wp, UPD_VALID); |
Bram Moolenaar | 90a9979 | 2018-09-12 21:52:18 +0200 | [diff] [blame] | 180 | } |
Bram Moolenaar | 3d6db14 | 2014-03-28 21:49:32 +0100 | [diff] [blame] | 181 | } |
| 182 | |
zeertzjq | 3e559cd | 2022-03-27 19:26:55 +0100 | [diff] [blame] | 183 | #ifdef FEAT_SYN_HL |
| 184 | /* |
| 185 | * Redraw when w_virtcol changes and 'cursorcolumn' is set or 'cursorlineopt' |
| 186 | * contains "screenline". |
| 187 | */ |
| 188 | static void |
| 189 | redraw_for_cursorcolumn(win_T *wp) |
| 190 | { |
| 191 | if ((wp->w_valid & VALID_VIRTCOL) == 0 && !pum_visible()) |
| 192 | { |
Bram Moolenaar | a4d158b | 2022-08-14 14:17:45 +0100 | [diff] [blame] | 193 | // When 'cursorcolumn' is set need to redraw with UPD_SOME_VALID. |
zeertzjq | 3e559cd | 2022-03-27 19:26:55 +0100 | [diff] [blame] | 194 | if (wp->w_p_cuc) |
Bram Moolenaar | a4d158b | 2022-08-14 14:17:45 +0100 | [diff] [blame] | 195 | redraw_win_later(wp, UPD_SOME_VALID); |
| 196 | // When 'cursorlineopt' contains "screenline" need to redraw with |
| 197 | // UPD_VALID. |
zeertzjq | 3e559cd | 2022-03-27 19:26:55 +0100 | [diff] [blame] | 198 | else if (wp->w_p_cul && (wp->w_p_culopt_flags & CULOPT_SCRLINE)) |
Bram Moolenaar | a4d158b | 2022-08-14 14:17:45 +0100 | [diff] [blame] | 199 | redraw_win_later(wp, UPD_VALID); |
zeertzjq | 3e559cd | 2022-03-27 19:26:55 +0100 | [diff] [blame] | 200 | } |
| 201 | } |
| 202 | #endif |
| 203 | |
Bram Moolenaar | 3d6db14 | 2014-03-28 21:49:32 +0100 | [diff] [blame] | 204 | /* |
Yee Cheng Chin | 81ba26e | 2022-11-18 12:52:50 +0000 | [diff] [blame] | 205 | * Calculates how much overlap the smoothscroll marker "<<<" overlaps with |
| 206 | * buffer text for curwin. |
| 207 | * Parameter "extra2" should be the padding on the 2nd line, not the first |
| 208 | * line. |
| 209 | * Returns the number of columns of overlap with buffer text, excluding the |
| 210 | * extra padding on the ledge. |
| 211 | */ |
| 212 | static int |
| 213 | smoothscroll_marker_overlap(int extra2) |
| 214 | { |
| 215 | #if defined(FEAT_LINEBREAK) |
| 216 | // We don't draw the <<< marker when in showbreak mode, thus no need to |
| 217 | // account for it. See wlv_screen_line(). |
| 218 | if (*get_showbreak_value(curwin) != NUL) |
| 219 | return 0; |
| 220 | #endif |
| 221 | return extra2 > 3 ? 0 : 3 - extra2; |
| 222 | } |
| 223 | |
| 224 | /* |
Bram Moolenaar | f32fb93 | 2022-11-17 11:34:38 +0000 | [diff] [blame] | 225 | * Set curwin->s_skipcol to zero and redraw later if needed. |
| 226 | */ |
| 227 | static void |
| 228 | reset_skipcol(void) |
| 229 | { |
| 230 | if (curwin->w_skipcol != 0) |
| 231 | { |
| 232 | curwin->w_skipcol = 0; |
| 233 | |
| 234 | // Should use the least expensive way that displays all that changed. |
| 235 | // UPD_NOT_VALID is too expensive, UPD_REDRAW_TOP does not redraw |
| 236 | // enough when the top line gets another screen line. |
| 237 | redraw_later(UPD_SOME_VALID); |
| 238 | } |
| 239 | } |
| 240 | |
| 241 | /* |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 242 | * Update curwin->w_topline and redraw if necessary. |
| 243 | * Used to update the screen before printing a message. |
| 244 | */ |
| 245 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 246 | update_topline_redraw(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 247 | { |
| 248 | update_topline(); |
| 249 | if (must_redraw) |
| 250 | update_screen(0); |
| 251 | } |
| 252 | |
| 253 | /* |
| 254 | * Update curwin->w_topline to move the cursor onto the screen. |
| 255 | */ |
| 256 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 257 | update_topline(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 258 | { |
| 259 | long line_count; |
| 260 | int halfheight; |
| 261 | int n; |
| 262 | linenr_T old_topline; |
| 263 | #ifdef FEAT_DIFF |
| 264 | int old_topfill; |
| 265 | #endif |
| 266 | #ifdef FEAT_FOLDING |
| 267 | linenr_T lnum; |
| 268 | #endif |
| 269 | int check_topline = FALSE; |
| 270 | int check_botline = FALSE; |
Bram Moolenaar | 6ed545e | 2022-05-09 20:09:23 +0100 | [diff] [blame] | 271 | long *so_ptr = curwin->w_p_so >= 0 ? &curwin->w_p_so : &p_so; |
Bram Moolenaar | 375e339 | 2019-01-31 18:26:10 +0100 | [diff] [blame] | 272 | int save_so = *so_ptr; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 273 | |
Luuk van Baal | 13ece2a | 2022-10-03 15:28:08 +0100 | [diff] [blame] | 274 | // Cursor is updated instead when this is TRUE for 'splitkeep'. |
| 275 | if (skip_update_topline) |
| 276 | return; |
| 277 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 278 | // If there is no valid screen and when the window height is zero just use |
| 279 | // the cursor line. |
Bram Moolenaar | d5d3753 | 2017-03-27 23:02:07 +0200 | [diff] [blame] | 280 | if (!screen_valid(TRUE) || curwin->w_height == 0) |
Bram Moolenaar | cfc216e | 2014-09-23 18:37:56 +0200 | [diff] [blame] | 281 | { |
Bram Moolenaar | 3b6d57f | 2020-11-01 21:56:40 +0100 | [diff] [blame] | 282 | check_cursor_lnum(); |
Bram Moolenaar | cfc216e | 2014-09-23 18:37:56 +0200 | [diff] [blame] | 283 | curwin->w_topline = curwin->w_cursor.lnum; |
| 284 | curwin->w_botline = curwin->w_topline; |
Bram Moolenaar | cfc216e | 2014-09-23 18:37:56 +0200 | [diff] [blame] | 285 | curwin->w_scbind_pos = 1; |
Bram Moolenaar | cfc216e | 2014-09-23 18:37:56 +0200 | [diff] [blame] | 286 | return; |
| 287 | } |
| 288 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 289 | check_cursor_moved(curwin); |
| 290 | if (curwin->w_valid & VALID_TOPLINE) |
| 291 | return; |
| 292 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 293 | // When dragging with the mouse, don't scroll that quickly |
Bram Moolenaar | 9964e46 | 2007-05-05 17:54:07 +0000 | [diff] [blame] | 294 | if (mouse_dragging > 0) |
Bram Moolenaar | 375e339 | 2019-01-31 18:26:10 +0100 | [diff] [blame] | 295 | *so_ptr = mouse_dragging - 1; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 296 | |
| 297 | old_topline = curwin->w_topline; |
| 298 | #ifdef FEAT_DIFF |
| 299 | old_topfill = curwin->w_topfill; |
| 300 | #endif |
| 301 | |
| 302 | /* |
| 303 | * If the buffer is empty, always set topline to 1. |
| 304 | */ |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 305 | if (BUFEMPTY()) // special case - file is empty |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 306 | { |
| 307 | if (curwin->w_topline != 1) |
Bram Moolenaar | a4d158b | 2022-08-14 14:17:45 +0100 | [diff] [blame] | 308 | redraw_later(UPD_NOT_VALID); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 309 | curwin->w_topline = 1; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 310 | curwin->w_botline = 2; |
| 311 | curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 312 | curwin->w_scbind_pos = 1; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 313 | } |
| 314 | |
| 315 | /* |
| 316 | * If the cursor is above or near the top of the window, scroll the window |
| 317 | * to show the line the cursor is in, with 'scrolloff' context. |
| 318 | */ |
| 319 | else |
| 320 | { |
Bram Moolenaar | 46b5474 | 2022-10-06 15:46:49 +0100 | [diff] [blame] | 321 | if (curwin->w_topline > 1 || curwin->w_skipcol > 0) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 322 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 323 | // If the cursor is above topline, scrolling is always needed. |
| 324 | // If the cursor is far below topline and there is no folding, |
| 325 | // scrolling down is never needed. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 326 | if (curwin->w_cursor.lnum < curwin->w_topline) |
| 327 | check_topline = TRUE; |
| 328 | else if (check_top_offset()) |
| 329 | check_topline = TRUE; |
Bram Moolenaar | 46b5474 | 2022-10-06 15:46:49 +0100 | [diff] [blame] | 330 | else if (curwin->w_cursor.lnum == curwin->w_topline) |
| 331 | { |
| 332 | colnr_T vcol; |
| 333 | |
Yee Cheng Chin | 81ba26e | 2022-11-18 12:52:50 +0000 | [diff] [blame] | 334 | // Check that the cursor position is visible. Add columns for |
| 335 | // the smoothscroll marker "<<<" displayed in the top-left if |
| 336 | // needed. |
Bram Moolenaar | 46b5474 | 2022-10-06 15:46:49 +0100 | [diff] [blame] | 337 | getvvcol(curwin, &curwin->w_cursor, &vcol, NULL, NULL); |
Yee Cheng Chin | 81ba26e | 2022-11-18 12:52:50 +0000 | [diff] [blame] | 338 | int smoothscroll_overlap = smoothscroll_marker_overlap( |
| 339 | curwin_col_off() - curwin_col_off2()); |
| 340 | if (curwin->w_skipcol + smoothscroll_overlap > vcol) |
Bram Moolenaar | 46b5474 | 2022-10-06 15:46:49 +0100 | [diff] [blame] | 341 | check_topline = TRUE; |
| 342 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 343 | } |
| 344 | #ifdef FEAT_DIFF |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 345 | // Check if there are more filler lines than allowed. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 346 | if (!check_topline && curwin->w_topfill > diff_check_fill(curwin, |
| 347 | curwin->w_topline)) |
| 348 | check_topline = TRUE; |
| 349 | #endif |
| 350 | |
| 351 | if (check_topline) |
| 352 | { |
| 353 | halfheight = curwin->w_height / 2 - 1; |
| 354 | if (halfheight < 2) |
| 355 | halfheight = 2; |
| 356 | |
| 357 | #ifdef FEAT_FOLDING |
| 358 | if (hasAnyFolding(curwin)) |
| 359 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 360 | // Count the number of logical lines between the cursor and |
| 361 | // topline + scrolloff (approximation of how much will be |
| 362 | // scrolled). |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 363 | n = 0; |
| 364 | for (lnum = curwin->w_cursor.lnum; |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 365 | lnum < curwin->w_topline + *so_ptr; ++lnum) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 366 | { |
| 367 | ++n; |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 368 | // stop at end of file or when we know we are far off |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 369 | if (lnum >= curbuf->b_ml.ml_line_count || n >= halfheight) |
| 370 | break; |
| 371 | (void)hasFolding(lnum, NULL, &lnum); |
| 372 | } |
| 373 | } |
| 374 | else |
| 375 | #endif |
Bram Moolenaar | 375e339 | 2019-01-31 18:26:10 +0100 | [diff] [blame] | 376 | n = curwin->w_topline + *so_ptr - curwin->w_cursor.lnum; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 377 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 378 | // If we weren't very close to begin with, we scroll to put the |
| 379 | // cursor in the middle of the window. Otherwise put the cursor |
| 380 | // near the top of the window. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 381 | if (n >= halfheight) |
| 382 | scroll_cursor_halfway(FALSE); |
| 383 | else |
| 384 | { |
Bram Moolenaar | 1e01546 | 2005-09-25 22:16:38 +0000 | [diff] [blame] | 385 | scroll_cursor_top(scrolljump_value(), FALSE); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 386 | check_botline = TRUE; |
| 387 | } |
| 388 | } |
| 389 | |
| 390 | else |
| 391 | { |
| 392 | #ifdef FEAT_FOLDING |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 393 | // Make sure topline is the first line of a fold. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 394 | (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
| 395 | #endif |
| 396 | check_botline = TRUE; |
| 397 | } |
| 398 | } |
| 399 | |
| 400 | /* |
| 401 | * If the cursor is below the bottom of the window, scroll the window |
| 402 | * to put the cursor on the window. |
| 403 | * When w_botline is invalid, recompute it first, to avoid a redraw later. |
| 404 | * If w_botline was approximated, we might need a redraw later in a few |
| 405 | * cases, but we don't want to spend (a lot of) time recomputing w_botline |
| 406 | * for every small change. |
| 407 | */ |
| 408 | if (check_botline) |
| 409 | { |
| 410 | if (!(curwin->w_valid & VALID_BOTLINE_AP)) |
| 411 | validate_botline(); |
| 412 | |
| 413 | if (curwin->w_botline <= curbuf->b_ml.ml_line_count) |
| 414 | { |
Bram Moolenaar | d4153d4 | 2008-11-15 15:06:17 +0000 | [diff] [blame] | 415 | if (curwin->w_cursor.lnum < curwin->w_botline) |
| 416 | { |
| 417 | if (((long)curwin->w_cursor.lnum |
Bram Moolenaar | 8088ae9 | 2022-06-20 11:38:17 +0100 | [diff] [blame] | 418 | >= (long)curwin->w_botline - *so_ptr |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 419 | #ifdef FEAT_FOLDING |
| 420 | || hasAnyFolding(curwin) |
| 421 | #endif |
| 422 | )) |
Bram Moolenaar | d4153d4 | 2008-11-15 15:06:17 +0000 | [diff] [blame] | 423 | { |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 424 | lineoff_T loff; |
| 425 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 426 | // Cursor is (a few lines) above botline, check if there are |
| 427 | // 'scrolloff' window lines below the cursor. If not, need to |
| 428 | // scroll. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 429 | n = curwin->w_empty_rows; |
| 430 | loff.lnum = curwin->w_cursor.lnum; |
| 431 | #ifdef FEAT_FOLDING |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 432 | // In a fold go to its last line. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 433 | (void)hasFolding(loff.lnum, NULL, &loff.lnum); |
| 434 | #endif |
| 435 | #ifdef FEAT_DIFF |
| 436 | loff.fill = 0; |
| 437 | n += curwin->w_filler_rows; |
| 438 | #endif |
| 439 | loff.height = 0; |
| 440 | while (loff.lnum < curwin->w_botline |
| 441 | #ifdef FEAT_DIFF |
| 442 | && (loff.lnum + 1 < curwin->w_botline || loff.fill == 0) |
| 443 | #endif |
| 444 | ) |
| 445 | { |
| 446 | n += loff.height; |
Bram Moolenaar | 375e339 | 2019-01-31 18:26:10 +0100 | [diff] [blame] | 447 | if (n >= *so_ptr) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 448 | break; |
| 449 | botline_forw(&loff); |
| 450 | } |
Bram Moolenaar | 375e339 | 2019-01-31 18:26:10 +0100 | [diff] [blame] | 451 | if (n >= *so_ptr) |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 452 | // sufficient context, no need to scroll |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 453 | check_botline = FALSE; |
Bram Moolenaar | d4153d4 | 2008-11-15 15:06:17 +0000 | [diff] [blame] | 454 | } |
| 455 | else |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 456 | // sufficient context, no need to scroll |
Bram Moolenaar | d4153d4 | 2008-11-15 15:06:17 +0000 | [diff] [blame] | 457 | check_botline = FALSE; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 458 | } |
| 459 | if (check_botline) |
| 460 | { |
| 461 | #ifdef FEAT_FOLDING |
| 462 | if (hasAnyFolding(curwin)) |
| 463 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 464 | // Count the number of logical lines between the cursor and |
| 465 | // botline - scrolloff (approximation of how much will be |
| 466 | // scrolled). |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 467 | line_count = 0; |
| 468 | for (lnum = curwin->w_cursor.lnum; |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 469 | lnum >= curwin->w_botline - *so_ptr; --lnum) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 470 | { |
| 471 | ++line_count; |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 472 | // stop at end of file or when we know we are far off |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 473 | if (lnum <= 0 || line_count > curwin->w_height + 1) |
| 474 | break; |
| 475 | (void)hasFolding(lnum, &lnum, NULL); |
| 476 | } |
| 477 | } |
| 478 | else |
| 479 | #endif |
| 480 | line_count = curwin->w_cursor.lnum - curwin->w_botline |
Bram Moolenaar | 8088ae9 | 2022-06-20 11:38:17 +0100 | [diff] [blame] | 481 | + 1 + *so_ptr; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 482 | if (line_count <= curwin->w_height + 1) |
Bram Moolenaar | 1e01546 | 2005-09-25 22:16:38 +0000 | [diff] [blame] | 483 | scroll_cursor_bot(scrolljump_value(), FALSE); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 484 | else |
| 485 | scroll_cursor_halfway(FALSE); |
| 486 | } |
| 487 | } |
| 488 | } |
| 489 | curwin->w_valid |= VALID_TOPLINE; |
| 490 | |
| 491 | /* |
| 492 | * Need to redraw when topline changed. |
| 493 | */ |
| 494 | if (curwin->w_topline != old_topline |
| 495 | #ifdef FEAT_DIFF |
| 496 | || curwin->w_topfill != old_topfill |
| 497 | #endif |
| 498 | ) |
| 499 | { |
Bram Moolenaar | 76b9b36 | 2012-02-04 23:35:00 +0100 | [diff] [blame] | 500 | dollar_vcol = -1; |
Bram Moolenaar | f32fb93 | 2022-11-17 11:34:38 +0000 | [diff] [blame] | 501 | redraw_later(UPD_VALID); |
| 502 | reset_skipcol(); |
| 503 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 504 | // May need to set w_skipcol when cursor in w_topline. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 505 | if (curwin->w_cursor.lnum == curwin->w_topline) |
| 506 | validate_cursor(); |
| 507 | } |
| 508 | |
Bram Moolenaar | 375e339 | 2019-01-31 18:26:10 +0100 | [diff] [blame] | 509 | *so_ptr = save_so; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 510 | } |
| 511 | |
| 512 | /* |
Bram Moolenaar | 1e01546 | 2005-09-25 22:16:38 +0000 | [diff] [blame] | 513 | * Return the scrolljump value to use for the current window. |
| 514 | * When 'scrolljump' is positive use it as-is. |
| 515 | * When 'scrolljump' is negative use it as a percentage of the window height. |
| 516 | */ |
| 517 | static int |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 518 | scrolljump_value(void) |
Bram Moolenaar | 1e01546 | 2005-09-25 22:16:38 +0000 | [diff] [blame] | 519 | { |
| 520 | if (p_sj >= 0) |
| 521 | return (int)p_sj; |
| 522 | return (curwin->w_height * -p_sj) / 100; |
| 523 | } |
| 524 | |
| 525 | /* |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 526 | * Return TRUE when there are not 'scrolloff' lines above the cursor for the |
| 527 | * current window. |
| 528 | */ |
| 529 | static int |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 530 | check_top_offset(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 531 | { |
| 532 | lineoff_T loff; |
| 533 | int n; |
Bram Moolenaar | 6ed545e | 2022-05-09 20:09:23 +0100 | [diff] [blame] | 534 | long so = get_scrolloff_value(); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 535 | |
Bram Moolenaar | 375e339 | 2019-01-31 18:26:10 +0100 | [diff] [blame] | 536 | if (curwin->w_cursor.lnum < curwin->w_topline + so |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 537 | #ifdef FEAT_FOLDING |
| 538 | || hasAnyFolding(curwin) |
| 539 | #endif |
| 540 | ) |
| 541 | { |
| 542 | loff.lnum = curwin->w_cursor.lnum; |
| 543 | #ifdef FEAT_DIFF |
| 544 | loff.fill = 0; |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 545 | n = curwin->w_topfill; // always have this context |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 546 | #else |
| 547 | n = 0; |
| 548 | #endif |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 549 | // Count the visible screen lines above the cursor line. |
Bram Moolenaar | 375e339 | 2019-01-31 18:26:10 +0100 | [diff] [blame] | 550 | while (n < so) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 551 | { |
| 552 | topline_back(&loff); |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 553 | // Stop when included a line above the window. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 554 | if (loff.lnum < curwin->w_topline |
| 555 | #ifdef FEAT_DIFF |
| 556 | || (loff.lnum == curwin->w_topline && loff.fill > 0) |
| 557 | #endif |
| 558 | ) |
| 559 | break; |
| 560 | n += loff.height; |
| 561 | } |
Bram Moolenaar | 375e339 | 2019-01-31 18:26:10 +0100 | [diff] [blame] | 562 | if (n < so) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 563 | return TRUE; |
| 564 | } |
| 565 | return FALSE; |
| 566 | } |
| 567 | |
Bram Moolenaar | e24b4ab | 2022-09-16 20:51:14 +0100 | [diff] [blame] | 568 | /* |
| 569 | * Update w_curswant. |
| 570 | */ |
| 571 | void |
| 572 | update_curswant_force(void) |
| 573 | { |
| 574 | validate_virtcol(); |
| 575 | curwin->w_curswant = curwin->w_virtcol |
| 576 | #ifdef FEAT_PROP_POPUP |
| 577 | - curwin->w_virtcol_first_char |
| 578 | #endif |
| 579 | ; |
| 580 | curwin->w_set_curswant = FALSE; |
| 581 | } |
| 582 | |
| 583 | /* |
| 584 | * Update w_curswant if w_set_curswant is set. |
| 585 | */ |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 586 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 587 | update_curswant(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 588 | { |
| 589 | if (curwin->w_set_curswant) |
Bram Moolenaar | e24b4ab | 2022-09-16 20:51:14 +0100 | [diff] [blame] | 590 | update_curswant_force(); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 591 | } |
| 592 | |
| 593 | /* |
| 594 | * Check if the cursor has moved. Set the w_valid flag accordingly. |
| 595 | */ |
| 596 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 597 | check_cursor_moved(win_T *wp) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 598 | { |
| 599 | if (wp->w_cursor.lnum != wp->w_valid_cursor.lnum) |
| 600 | { |
| 601 | wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL |
Bram Moolenaar | a91cb98 | 2022-05-08 19:39:31 +0100 | [diff] [blame] | 602 | |VALID_CHEIGHT|VALID_CROW|VALID_TOPLINE |
| 603 | |VALID_BOTLINE|VALID_BOTLINE_AP); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 604 | wp->w_valid_cursor = wp->w_cursor; |
| 605 | wp->w_valid_leftcol = wp->w_leftcol; |
Bram Moolenaar | 2fbabd2 | 2022-10-12 19:53:38 +0100 | [diff] [blame] | 606 | wp->w_valid_skipcol = wp->w_skipcol; |
| 607 | } |
| 608 | else if (wp->w_skipcol != wp->w_valid_skipcol) |
| 609 | { |
| 610 | wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL |
| 611 | |VALID_CHEIGHT|VALID_CROW |
| 612 | |VALID_BOTLINE|VALID_BOTLINE_AP); |
| 613 | wp->w_valid_cursor = wp->w_cursor; |
| 614 | wp->w_valid_leftcol = wp->w_leftcol; |
| 615 | wp->w_valid_skipcol = wp->w_skipcol; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 616 | } |
| 617 | else if (wp->w_cursor.col != wp->w_valid_cursor.col |
| 618 | || wp->w_leftcol != wp->w_valid_leftcol |
Bram Moolenaar | 29ddebe | 2019-01-26 17:28:26 +0100 | [diff] [blame] | 619 | || wp->w_cursor.coladd != wp->w_valid_cursor.coladd) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 620 | { |
| 621 | wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL); |
| 622 | wp->w_valid_cursor.col = wp->w_cursor.col; |
| 623 | wp->w_valid_leftcol = wp->w_leftcol; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 624 | wp->w_valid_cursor.coladd = wp->w_cursor.coladd; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 625 | } |
| 626 | } |
| 627 | |
| 628 | /* |
| 629 | * Call this function when some window settings have changed, which require |
| 630 | * the cursor position, botline and topline to be recomputed and the window to |
| 631 | * be redrawn. E.g, when changing the 'wrap' option or folding. |
| 632 | */ |
| 633 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 634 | changed_window_setting(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 635 | { |
| 636 | changed_window_setting_win(curwin); |
| 637 | } |
| 638 | |
| 639 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 640 | changed_window_setting_win(win_T *wp) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 641 | { |
| 642 | wp->w_lines_valid = 0; |
| 643 | changed_line_abv_curs_win(wp); |
| 644 | wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP|VALID_TOPLINE); |
Bram Moolenaar | a4d158b | 2022-08-14 14:17:45 +0100 | [diff] [blame] | 645 | redraw_win_later(wp, UPD_NOT_VALID); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 646 | } |
| 647 | |
| 648 | /* |
Bram Moolenaar | 89469d1 | 2022-12-02 20:46:26 +0000 | [diff] [blame] | 649 | * Call changed_window_setting_win() for every window containing "buf". |
| 650 | */ |
| 651 | void |
| 652 | changed_window_setting_buf(buf_T *buf) |
| 653 | { |
| 654 | tabpage_T *tp; |
| 655 | win_T *wp; |
| 656 | |
| 657 | FOR_ALL_TAB_WINDOWS(tp, wp) |
| 658 | if (wp->w_buffer == buf) |
| 659 | changed_window_setting_win(wp); |
| 660 | } |
| 661 | |
| 662 | /* |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 663 | * Set wp->w_topline to a certain number. |
| 664 | */ |
| 665 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 666 | set_topline(win_T *wp, linenr_T lnum) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 667 | { |
Bram Moolenaar | 04626c2 | 2021-09-01 16:02:07 +0200 | [diff] [blame] | 668 | #ifdef FEAT_DIFF |
| 669 | linenr_T prev_topline = wp->w_topline; |
| 670 | #endif |
| 671 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 672 | #ifdef FEAT_FOLDING |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 673 | // go to first of folded lines |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 674 | (void)hasFoldingWin(wp, lnum, &lnum, NULL, TRUE, NULL); |
| 675 | #endif |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 676 | // Approximate the value of w_botline |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 677 | wp->w_botline += lnum - wp->w_topline; |
Bram Moolenaar | 23999d7 | 2020-12-23 14:36:00 +0100 | [diff] [blame] | 678 | if (wp->w_botline > wp->w_buffer->b_ml.ml_line_count + 1) |
| 679 | wp->w_botline = wp->w_buffer->b_ml.ml_line_count + 1; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 680 | wp->w_topline = lnum; |
Bram Moolenaar | d4153d4 | 2008-11-15 15:06:17 +0000 | [diff] [blame] | 681 | wp->w_topline_was_set = TRUE; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 682 | #ifdef FEAT_DIFF |
Bram Moolenaar | 04626c2 | 2021-09-01 16:02:07 +0200 | [diff] [blame] | 683 | if (lnum != prev_topline) |
| 684 | // Keep the filler lines when the topline didn't change. |
| 685 | wp->w_topfill = 0; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 686 | #endif |
| 687 | wp->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_TOPLINE); |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 688 | // Don't set VALID_TOPLINE here, 'scrolloff' needs to be checked. |
Bram Moolenaar | a4d158b | 2022-08-14 14:17:45 +0100 | [diff] [blame] | 689 | redraw_later(UPD_VALID); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 690 | } |
| 691 | |
| 692 | /* |
| 693 | * Call this function when the length of the cursor line (in screen |
| 694 | * characters) has changed, and the change is before the cursor. |
| 695 | * Need to take care of w_botline separately! |
| 696 | */ |
| 697 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 698 | changed_cline_bef_curs(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 699 | { |
| 700 | curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL |
| 701 | |VALID_CHEIGHT|VALID_TOPLINE); |
| 702 | } |
| 703 | |
| 704 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 705 | changed_cline_bef_curs_win(win_T *wp) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 706 | { |
| 707 | wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL |
| 708 | |VALID_CHEIGHT|VALID_TOPLINE); |
| 709 | } |
| 710 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 711 | /* |
| 712 | * Call this function when the length of a line (in screen characters) above |
| 713 | * the cursor have changed. |
| 714 | * Need to take care of w_botline separately! |
| 715 | */ |
| 716 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 717 | changed_line_abv_curs(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 718 | { |
| 719 | curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW |
| 720 | |VALID_CHEIGHT|VALID_TOPLINE); |
| 721 | } |
| 722 | |
| 723 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 724 | changed_line_abv_curs_win(win_T *wp) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 725 | { |
| 726 | wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW |
| 727 | |VALID_CHEIGHT|VALID_TOPLINE); |
| 728 | } |
| 729 | |
| 730 | /* |
Bram Moolenaar | 326c5d3 | 2022-08-12 13:05:49 +0100 | [diff] [blame] | 731 | * Display of line has changed for "buf", invalidate cursor position and |
| 732 | * w_botline. |
| 733 | */ |
| 734 | void |
| 735 | changed_line_display_buf(buf_T *buf) |
| 736 | { |
| 737 | win_T *wp; |
| 738 | |
| 739 | FOR_ALL_WINDOWS(wp) |
| 740 | if (wp->w_buffer == buf) |
| 741 | wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL |
| 742 | |VALID_CROW|VALID_CHEIGHT |
| 743 | |VALID_TOPLINE|VALID_BOTLINE|VALID_BOTLINE_AP); |
| 744 | } |
| 745 | |
| 746 | /* |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 747 | * Make sure the value of curwin->w_botline is valid. |
| 748 | */ |
| 749 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 750 | validate_botline(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 751 | { |
Bram Moolenaar | 23999d7 | 2020-12-23 14:36:00 +0100 | [diff] [blame] | 752 | validate_botline_win(curwin); |
| 753 | } |
| 754 | |
| 755 | /* |
| 756 | * Make sure the value of wp->w_botline is valid. |
| 757 | */ |
| 758 | void |
| 759 | validate_botline_win(win_T *wp) |
| 760 | { |
| 761 | if (!(wp->w_valid & VALID_BOTLINE)) |
| 762 | comp_botline(wp); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 763 | } |
| 764 | |
| 765 | /* |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 766 | * Mark curwin->w_botline as invalid (because of some change in the buffer). |
| 767 | */ |
| 768 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 769 | invalidate_botline(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 770 | { |
| 771 | curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); |
| 772 | } |
| 773 | |
| 774 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 775 | invalidate_botline_win(win_T *wp) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 776 | { |
| 777 | wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); |
| 778 | } |
| 779 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 780 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 781 | approximate_botline_win( |
| 782 | win_T *wp) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 783 | { |
| 784 | wp->w_valid &= ~VALID_BOTLINE; |
| 785 | } |
| 786 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 787 | /* |
| 788 | * Return TRUE if curwin->w_wrow and curwin->w_wcol are valid. |
| 789 | */ |
| 790 | int |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 791 | cursor_valid(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 792 | { |
| 793 | check_cursor_moved(curwin); |
| 794 | return ((curwin->w_valid & (VALID_WROW|VALID_WCOL)) == |
| 795 | (VALID_WROW|VALID_WCOL)); |
| 796 | } |
| 797 | |
| 798 | /* |
| 799 | * Validate cursor position. Makes sure w_wrow and w_wcol are valid. |
| 800 | * w_topline must be valid, you may need to call update_topline() first! |
| 801 | */ |
| 802 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 803 | validate_cursor(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 804 | { |
Bram Moolenaar | d4566c1 | 2022-09-24 21:06:39 +0100 | [diff] [blame] | 805 | check_cursor_lnum(); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 806 | check_cursor_moved(curwin); |
| 807 | if ((curwin->w_valid & (VALID_WCOL|VALID_WROW)) != (VALID_WCOL|VALID_WROW)) |
| 808 | curs_columns(TRUE); |
| 809 | } |
| 810 | |
| 811 | #if defined(FEAT_GUI) || defined(PROTO) |
| 812 | /* |
| 813 | * validate w_cline_row. |
| 814 | */ |
| 815 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 816 | validate_cline_row(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 817 | { |
| 818 | /* |
| 819 | * First make sure that w_topline is valid (after moving the cursor). |
| 820 | */ |
| 821 | update_topline(); |
| 822 | check_cursor_moved(curwin); |
| 823 | if (!(curwin->w_valid & VALID_CROW)) |
Bram Moolenaar | 3f9be97 | 2014-12-13 21:09:57 +0100 | [diff] [blame] | 824 | curs_rows(curwin); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 825 | } |
| 826 | #endif |
| 827 | |
| 828 | /* |
| 829 | * Compute wp->w_cline_row and wp->w_cline_height, based on the current value |
Bram Moolenaar | fff2bee | 2010-05-15 13:56:02 +0200 | [diff] [blame] | 830 | * of wp->w_topline. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 831 | */ |
| 832 | static void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 833 | curs_rows(win_T *wp) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 834 | { |
| 835 | linenr_T lnum; |
| 836 | int i; |
| 837 | int all_invalid; |
| 838 | int valid; |
| 839 | #ifdef FEAT_FOLDING |
| 840 | long fold_count; |
| 841 | #endif |
| 842 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 843 | // Check if wp->w_lines[].wl_size is invalid |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 844 | all_invalid = (!redrawing() |
| 845 | || wp->w_lines_valid == 0 |
| 846 | || wp->w_lines[0].wl_lnum > wp->w_topline); |
| 847 | i = 0; |
| 848 | wp->w_cline_row = 0; |
| 849 | for (lnum = wp->w_topline; lnum < wp->w_cursor.lnum; ++i) |
| 850 | { |
| 851 | valid = FALSE; |
| 852 | if (!all_invalid && i < wp->w_lines_valid) |
| 853 | { |
| 854 | if (wp->w_lines[i].wl_lnum < lnum || !wp->w_lines[i].wl_valid) |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 855 | continue; // skip changed or deleted lines |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 856 | if (wp->w_lines[i].wl_lnum == lnum) |
| 857 | { |
| 858 | #ifdef FEAT_FOLDING |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 859 | // Check for newly inserted lines below this row, in which |
| 860 | // case we need to check for folded lines. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 861 | if (!wp->w_buffer->b_mod_set |
| 862 | || wp->w_lines[i].wl_lastlnum < wp->w_cursor.lnum |
| 863 | || wp->w_buffer->b_mod_top |
| 864 | > wp->w_lines[i].wl_lastlnum + 1) |
| 865 | #endif |
| 866 | valid = TRUE; |
| 867 | } |
| 868 | else if (wp->w_lines[i].wl_lnum > lnum) |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 869 | --i; // hold at inserted lines |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 870 | } |
| 871 | if (valid |
| 872 | #ifdef FEAT_DIFF |
| 873 | && (lnum != wp->w_topline || !wp->w_p_diff) |
| 874 | #endif |
| 875 | ) |
| 876 | { |
| 877 | #ifdef FEAT_FOLDING |
| 878 | lnum = wp->w_lines[i].wl_lastlnum + 1; |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 879 | // Cursor inside folded lines, don't count this row |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 880 | if (lnum > wp->w_cursor.lnum) |
| 881 | break; |
| 882 | #else |
| 883 | ++lnum; |
| 884 | #endif |
| 885 | wp->w_cline_row += wp->w_lines[i].wl_size; |
| 886 | } |
| 887 | else |
| 888 | { |
| 889 | #ifdef FEAT_FOLDING |
| 890 | fold_count = foldedCount(wp, lnum, NULL); |
| 891 | if (fold_count) |
| 892 | { |
| 893 | lnum += fold_count; |
| 894 | if (lnum > wp->w_cursor.lnum) |
| 895 | break; |
| 896 | ++wp->w_cline_row; |
| 897 | } |
| 898 | else |
| 899 | #endif |
Bram Moolenaar | f6196f4 | 2022-10-02 21:29:55 +0100 | [diff] [blame] | 900 | { |
Bram Moolenaar | d5337ef | 2022-10-20 20:15:47 +0100 | [diff] [blame] | 901 | wp->w_cline_row += plines_correct_topline(wp, lnum); |
| 902 | ++lnum; |
Bram Moolenaar | f6196f4 | 2022-10-02 21:29:55 +0100 | [diff] [blame] | 903 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 904 | } |
| 905 | } |
| 906 | |
| 907 | check_cursor_moved(wp); |
| 908 | if (!(wp->w_valid & VALID_CHEIGHT)) |
| 909 | { |
| 910 | if (all_invalid |
| 911 | || i == wp->w_lines_valid |
| 912 | || (i < wp->w_lines_valid |
| 913 | && (!wp->w_lines[i].wl_valid |
| 914 | || wp->w_lines[i].wl_lnum != wp->w_cursor.lnum))) |
| 915 | { |
| 916 | #ifdef FEAT_DIFF |
| 917 | if (wp->w_cursor.lnum == wp->w_topline) |
| 918 | wp->w_cline_height = plines_win_nofill(wp, wp->w_cursor.lnum, |
| 919 | TRUE) + wp->w_topfill; |
| 920 | else |
| 921 | #endif |
| 922 | wp->w_cline_height = plines_win(wp, wp->w_cursor.lnum, TRUE); |
| 923 | #ifdef FEAT_FOLDING |
| 924 | wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, |
| 925 | NULL, NULL, TRUE, NULL); |
| 926 | #endif |
| 927 | } |
| 928 | else if (i > wp->w_lines_valid) |
| 929 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 930 | // a line that is too long to fit on the last screen line |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 931 | wp->w_cline_height = 0; |
| 932 | #ifdef FEAT_FOLDING |
| 933 | wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, |
| 934 | NULL, NULL, TRUE, NULL); |
| 935 | #endif |
| 936 | } |
| 937 | else |
| 938 | { |
| 939 | wp->w_cline_height = wp->w_lines[i].wl_size; |
| 940 | #ifdef FEAT_FOLDING |
| 941 | wp->w_cline_folded = wp->w_lines[i].wl_folded; |
| 942 | #endif |
| 943 | } |
| 944 | } |
| 945 | |
Bram Moolenaar | 3d6db14 | 2014-03-28 21:49:32 +0100 | [diff] [blame] | 946 | redraw_for_cursorline(curwin); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 947 | wp->w_valid |= VALID_CROW|VALID_CHEIGHT; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 948 | } |
| 949 | |
| 950 | /* |
| 951 | * Validate curwin->w_virtcol only. |
| 952 | */ |
| 953 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 954 | validate_virtcol(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 955 | { |
| 956 | validate_virtcol_win(curwin); |
| 957 | } |
| 958 | |
| 959 | /* |
| 960 | * Validate wp->w_virtcol only. |
| 961 | */ |
| 962 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 963 | validate_virtcol_win(win_T *wp) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 964 | { |
| 965 | check_cursor_moved(wp); |
| 966 | if (!(wp->w_valid & VALID_VIRTCOL)) |
| 967 | { |
Bram Moolenaar | 04e0ed1 | 2022-09-10 20:00:56 +0100 | [diff] [blame] | 968 | #ifdef FEAT_PROP_POPUP |
| 969 | wp->w_virtcol_first_char = 0; |
| 970 | #endif |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 971 | getvvcol(wp, &wp->w_cursor, NULL, &(wp->w_virtcol), NULL); |
Bram Moolenaar | 2b48ad5 | 2006-03-12 21:56:11 +0000 | [diff] [blame] | 972 | #ifdef FEAT_SYN_HL |
zeertzjq | 3e559cd | 2022-03-27 19:26:55 +0100 | [diff] [blame] | 973 | redraw_for_cursorcolumn(wp); |
Bram Moolenaar | 2b48ad5 | 2006-03-12 21:56:11 +0000 | [diff] [blame] | 974 | #endif |
zeertzjq | 3e559cd | 2022-03-27 19:26:55 +0100 | [diff] [blame] | 975 | wp->w_valid |= VALID_VIRTCOL; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 976 | } |
| 977 | } |
| 978 | |
| 979 | /* |
| 980 | * Validate curwin->w_cline_height only. |
| 981 | */ |
Bram Moolenaar | 09dd2bb | 2019-12-14 18:42:15 +0100 | [diff] [blame] | 982 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 983 | validate_cheight(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 984 | { |
| 985 | check_cursor_moved(curwin); |
| 986 | if (!(curwin->w_valid & VALID_CHEIGHT)) |
| 987 | { |
| 988 | #ifdef FEAT_DIFF |
| 989 | if (curwin->w_cursor.lnum == curwin->w_topline) |
| 990 | curwin->w_cline_height = plines_nofill(curwin->w_cursor.lnum) |
| 991 | + curwin->w_topfill; |
| 992 | else |
| 993 | #endif |
| 994 | curwin->w_cline_height = plines(curwin->w_cursor.lnum); |
| 995 | #ifdef FEAT_FOLDING |
| 996 | curwin->w_cline_folded = hasFolding(curwin->w_cursor.lnum, NULL, NULL); |
| 997 | #endif |
| 998 | curwin->w_valid |= VALID_CHEIGHT; |
| 999 | } |
| 1000 | } |
| 1001 | |
| 1002 | /* |
Bram Moolenaar | c236c16 | 2008-07-13 17:41:49 +0000 | [diff] [blame] | 1003 | * Validate w_wcol and w_virtcol only. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1004 | */ |
| 1005 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 1006 | validate_cursor_col(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1007 | { |
| 1008 | colnr_T off; |
| 1009 | colnr_T col; |
Bram Moolenaar | 6427c60 | 2010-02-03 17:43:07 +0100 | [diff] [blame] | 1010 | int width; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1011 | |
| 1012 | validate_virtcol(); |
| 1013 | if (!(curwin->w_valid & VALID_WCOL)) |
| 1014 | { |
| 1015 | col = curwin->w_virtcol; |
| 1016 | off = curwin_col_off(); |
| 1017 | col += off; |
Bram Moolenaar | 0263146 | 2017-09-22 15:20:32 +0200 | [diff] [blame] | 1018 | width = curwin->w_width - off + curwin_col_off2(); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1019 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1020 | // long line wrapping, adjust curwin->w_wrow |
Bram Moolenaar | c236c16 | 2008-07-13 17:41:49 +0000 | [diff] [blame] | 1021 | if (curwin->w_p_wrap |
Bram Moolenaar | 0263146 | 2017-09-22 15:20:32 +0200 | [diff] [blame] | 1022 | && col >= (colnr_T)curwin->w_width |
Bram Moolenaar | 6427c60 | 2010-02-03 17:43:07 +0100 | [diff] [blame] | 1023 | && width > 0) |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1024 | // use same formula as what is used in curs_columns() |
Bram Moolenaar | 0263146 | 2017-09-22 15:20:32 +0200 | [diff] [blame] | 1025 | col -= ((col - curwin->w_width) / width + 1) * width; |
Bram Moolenaar | c236c16 | 2008-07-13 17:41:49 +0000 | [diff] [blame] | 1026 | if (col > (int)curwin->w_leftcol) |
| 1027 | col -= curwin->w_leftcol; |
| 1028 | else |
| 1029 | col = 0; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1030 | curwin->w_wcol = col; |
Bram Moolenaar | c236c16 | 2008-07-13 17:41:49 +0000 | [diff] [blame] | 1031 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1032 | curwin->w_valid |= VALID_WCOL; |
Bram Moolenaar | 4792a67 | 2020-11-15 21:11:18 +0100 | [diff] [blame] | 1033 | #ifdef FEAT_PROP_POPUP |
Bram Moolenaar | 6a07644 | 2020-11-15 20:32:58 +0100 | [diff] [blame] | 1034 | curwin->w_flags &= ~WFLAG_WCOL_OFF_ADDED; |
Bram Moolenaar | 4792a67 | 2020-11-15 21:11:18 +0100 | [diff] [blame] | 1035 | #endif |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1036 | } |
| 1037 | } |
| 1038 | |
| 1039 | /* |
Bram Moolenaar | 6448667 | 2010-05-16 15:46:46 +0200 | [diff] [blame] | 1040 | * Compute offset of a window, occupied by absolute or relative line number, |
| 1041 | * fold column and sign column (these don't move when scrolling horizontally). |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1042 | */ |
| 1043 | int |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 1044 | win_col_off(win_T *wp) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1045 | { |
Bram Moolenaar | 6448667 | 2010-05-16 15:46:46 +0200 | [diff] [blame] | 1046 | return (((wp->w_p_nu || wp->w_p_rnu) ? number_width(wp) + 1 : 0) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1047 | + (cmdwin_type == 0 || wp != curwin ? 0 : 1) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1048 | #ifdef FEAT_FOLDING |
| 1049 | + wp->w_p_fdc |
| 1050 | #endif |
| 1051 | #ifdef FEAT_SIGNS |
Bram Moolenaar | 95ec9d6 | 2016-08-12 18:29:59 +0200 | [diff] [blame] | 1052 | + (signcolumn_on(wp) ? 2 : 0) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1053 | #endif |
| 1054 | ); |
| 1055 | } |
| 1056 | |
| 1057 | int |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 1058 | curwin_col_off(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1059 | { |
| 1060 | return win_col_off(curwin); |
| 1061 | } |
| 1062 | |
| 1063 | /* |
| 1064 | * Return the difference in column offset for the second screen line of a |
Bram Moolenaar | 6b2d4ff | 2022-10-03 14:06:02 +0100 | [diff] [blame] | 1065 | * wrapped line. It's positive if 'number' or 'relativenumber' is on and 'n' |
| 1066 | * is in 'cpoptions'. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1067 | */ |
| 1068 | int |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 1069 | win_col_off2(win_T *wp) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1070 | { |
Bram Moolenaar | 6448667 | 2010-05-16 15:46:46 +0200 | [diff] [blame] | 1071 | if ((wp->w_p_nu || wp->w_p_rnu) && vim_strchr(p_cpo, CPO_NUMCOL) != NULL) |
Bram Moolenaar | 592e0a2 | 2004-07-03 16:05:59 +0000 | [diff] [blame] | 1072 | return number_width(wp) + 1; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1073 | return 0; |
| 1074 | } |
| 1075 | |
| 1076 | int |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 1077 | curwin_col_off2(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1078 | { |
| 1079 | return win_col_off2(curwin); |
| 1080 | } |
| 1081 | |
| 1082 | /* |
Bram Moolenaar | fc3abf4 | 2019-01-24 15:54:21 +0100 | [diff] [blame] | 1083 | * Compute curwin->w_wcol and curwin->w_virtcol. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1084 | * Also updates curwin->w_wrow and curwin->w_cline_row. |
| 1085 | * Also updates curwin->w_leftcol. |
| 1086 | */ |
| 1087 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 1088 | curs_columns( |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1089 | int may_scroll) // when TRUE, may scroll horizontally |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1090 | { |
| 1091 | int diff; |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1092 | int extra; // offset for first screen line |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1093 | int off_left, off_right; |
| 1094 | int n; |
| 1095 | int p_lines; |
Bram Moolenaar | 856c5d2 | 2022-10-13 21:54:28 +0100 | [diff] [blame] | 1096 | int width1; // text width for first screen line |
| 1097 | int width2 = 0; // text width for second and later screen line |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1098 | int new_leftcol; |
| 1099 | colnr_T startcol; |
| 1100 | colnr_T endcol; |
| 1101 | colnr_T prev_skipcol; |
Bram Moolenaar | 6ed545e | 2022-05-09 20:09:23 +0100 | [diff] [blame] | 1102 | long so = get_scrolloff_value(); |
| 1103 | long siso = get_sidescrolloff_value(); |
Bram Moolenaar | 4b6172e | 2022-10-13 20:23:28 +0100 | [diff] [blame] | 1104 | int did_sub_skipcol = FALSE; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1105 | |
| 1106 | /* |
| 1107 | * First make sure that w_topline is valid (after moving the cursor). |
| 1108 | */ |
Luuk van Baal | 13ece2a | 2022-10-03 15:28:08 +0100 | [diff] [blame] | 1109 | update_topline(); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1110 | |
| 1111 | /* |
| 1112 | * Next make sure that w_cline_row is valid. |
| 1113 | */ |
| 1114 | if (!(curwin->w_valid & VALID_CROW)) |
Bram Moolenaar | 3f9be97 | 2014-12-13 21:09:57 +0100 | [diff] [blame] | 1115 | curs_rows(curwin); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1116 | |
Bram Moolenaar | 04e0ed1 | 2022-09-10 20:00:56 +0100 | [diff] [blame] | 1117 | #ifdef FEAT_PROP_POPUP |
| 1118 | // will be set by getvvcol() but not reset |
| 1119 | curwin->w_virtcol_first_char = 0; |
| 1120 | #endif |
| 1121 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1122 | /* |
| 1123 | * Compute the number of virtual columns. |
| 1124 | */ |
| 1125 | #ifdef FEAT_FOLDING |
| 1126 | if (curwin->w_cline_folded) |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1127 | // In a folded line the cursor is always in the first column |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1128 | startcol = curwin->w_virtcol = endcol = curwin->w_leftcol; |
| 1129 | else |
| 1130 | #endif |
| 1131 | getvvcol(curwin, &curwin->w_cursor, |
| 1132 | &startcol, &(curwin->w_virtcol), &endcol); |
| 1133 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1134 | // remove '$' from change command when cursor moves onto it |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1135 | if (startcol > dollar_vcol) |
Bram Moolenaar | 76b9b36 | 2012-02-04 23:35:00 +0100 | [diff] [blame] | 1136 | dollar_vcol = -1; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1137 | |
| 1138 | extra = curwin_col_off(); |
| 1139 | curwin->w_wcol = curwin->w_virtcol + extra; |
| 1140 | endcol += extra; |
| 1141 | |
| 1142 | /* |
| 1143 | * Now compute w_wrow, counting screen lines from w_cline_row. |
| 1144 | */ |
| 1145 | curwin->w_wrow = curwin->w_cline_row; |
| 1146 | |
Bram Moolenaar | 856c5d2 | 2022-10-13 21:54:28 +0100 | [diff] [blame] | 1147 | width1 = curwin->w_width - extra; |
| 1148 | if (width1 <= 0) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1149 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1150 | // No room for text, put cursor in last char of window. |
Bram Moolenaar | 30441bb | 2021-07-08 13:19:31 +0200 | [diff] [blame] | 1151 | // If not wrapping, the last non-empty line. |
Bram Moolenaar | 0263146 | 2017-09-22 15:20:32 +0200 | [diff] [blame] | 1152 | curwin->w_wcol = curwin->w_width - 1; |
Bram Moolenaar | 30441bb | 2021-07-08 13:19:31 +0200 | [diff] [blame] | 1153 | if (curwin->w_p_wrap) |
| 1154 | curwin->w_wrow = curwin->w_height - 1; |
| 1155 | else |
| 1156 | curwin->w_wrow = curwin->w_height - 1 - curwin->w_empty_rows; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1157 | } |
Bram Moolenaar | 4033c55 | 2017-09-16 20:54:51 +0200 | [diff] [blame] | 1158 | else if (curwin->w_p_wrap && curwin->w_width != 0) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1159 | { |
Bram Moolenaar | 856c5d2 | 2022-10-13 21:54:28 +0100 | [diff] [blame] | 1160 | width2 = width1 + curwin_col_off2(); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1161 | |
Bram Moolenaar | 2fbabd2 | 2022-10-12 19:53:38 +0100 | [diff] [blame] | 1162 | // skip columns that are not visible |
| 1163 | if (curwin->w_cursor.lnum == curwin->w_topline |
Bram Moolenaar | 856c5d2 | 2022-10-13 21:54:28 +0100 | [diff] [blame] | 1164 | && curwin->w_skipcol > 0 |
Bram Moolenaar | 2fbabd2 | 2022-10-12 19:53:38 +0100 | [diff] [blame] | 1165 | && curwin->w_wcol >= curwin->w_skipcol) |
Bram Moolenaar | 4b6172e | 2022-10-13 20:23:28 +0100 | [diff] [blame] | 1166 | { |
Yee Cheng Chin | 01ee52b | 2022-11-17 12:41:42 +0000 | [diff] [blame] | 1167 | // Deduct by multiples of width2. This allows the long line |
| 1168 | // wrapping formula below to correctly calculate the w_wcol value |
| 1169 | // when wrapping. |
Bram Moolenaar | 856c5d2 | 2022-10-13 21:54:28 +0100 | [diff] [blame] | 1170 | if (curwin->w_skipcol <= width1) |
Yee Cheng Chin | 01ee52b | 2022-11-17 12:41:42 +0000 | [diff] [blame] | 1171 | curwin->w_wcol -= width2; |
Bram Moolenaar | 856c5d2 | 2022-10-13 21:54:28 +0100 | [diff] [blame] | 1172 | else |
Yee Cheng Chin | 01ee52b | 2022-11-17 12:41:42 +0000 | [diff] [blame] | 1173 | curwin->w_wcol -= width2 |
Bram Moolenaar | 856c5d2 | 2022-10-13 21:54:28 +0100 | [diff] [blame] | 1174 | * (((curwin->w_skipcol - width1) / width2) + 1); |
Yee Cheng Chin | 01ee52b | 2022-11-17 12:41:42 +0000 | [diff] [blame] | 1175 | |
Bram Moolenaar | 4b6172e | 2022-10-13 20:23:28 +0100 | [diff] [blame] | 1176 | did_sub_skipcol = TRUE; |
| 1177 | } |
Bram Moolenaar | 2fbabd2 | 2022-10-12 19:53:38 +0100 | [diff] [blame] | 1178 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1179 | // long line wrapping, adjust curwin->w_wrow |
Bram Moolenaar | 0263146 | 2017-09-22 15:20:32 +0200 | [diff] [blame] | 1180 | if (curwin->w_wcol >= curwin->w_width) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1181 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1182 | // this same formula is used in validate_cursor_col() |
Bram Moolenaar | 856c5d2 | 2022-10-13 21:54:28 +0100 | [diff] [blame] | 1183 | n = (curwin->w_wcol - curwin->w_width) / width2 + 1; |
| 1184 | curwin->w_wcol -= n * width2; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1185 | curwin->w_wrow += n; |
| 1186 | |
| 1187 | #ifdef FEAT_LINEBREAK |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1188 | // When cursor wraps to first char of next line in Insert |
| 1189 | // mode, the 'showbreak' string isn't shown, backup to first |
| 1190 | // column |
Bram Moolenaar | 4b6172e | 2022-10-13 20:23:28 +0100 | [diff] [blame] | 1191 | char_u *sbr = get_showbreak_value(curwin); |
Bram Moolenaar | ee85702 | 2019-11-09 23:26:40 +0100 | [diff] [blame] | 1192 | if (*sbr && *ml_get_cursor() == NUL |
=?UTF-8?q?Dundar=20G=C3=B6c?= | dfa5e46 | 2021-10-02 11:26:51 +0100 | [diff] [blame] | 1193 | && curwin->w_wcol == vim_strsize(sbr)) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1194 | curwin->w_wcol = 0; |
| 1195 | #endif |
| 1196 | } |
| 1197 | } |
| 1198 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1199 | // No line wrapping: compute curwin->w_leftcol if scrolling is on and line |
| 1200 | // is not folded. |
| 1201 | // If scrolling is off, curwin->w_leftcol is assumed to be 0 |
Bram Moolenaar | 70b2a56 | 2012-01-10 22:26:17 +0100 | [diff] [blame] | 1202 | else if (may_scroll |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1203 | #ifdef FEAT_FOLDING |
| 1204 | && !curwin->w_cline_folded |
| 1205 | #endif |
| 1206 | ) |
| 1207 | { |
Bram Moolenaar | c9dc03f | 2022-09-12 17:51:07 +0100 | [diff] [blame] | 1208 | #ifdef FEAT_PROP_POPUP |
| 1209 | if (curwin->w_virtcol_first_char > 0) |
| 1210 | { |
| 1211 | int cols = (curwin->w_width - extra); |
| 1212 | int rows = cols > 0 ? curwin->w_virtcol_first_char / cols : 1; |
| 1213 | |
| 1214 | // each "above" text prop shifts the text one row down |
| 1215 | curwin->w_wrow += rows; |
| 1216 | curwin->w_wcol -= rows * cols; |
| 1217 | endcol -= rows * cols; |
| 1218 | curwin->w_cline_height = rows + 1; |
| 1219 | } |
| 1220 | #endif |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1221 | /* |
| 1222 | * If Cursor is left of the screen, scroll rightwards. |
| 1223 | * If Cursor is right of the screen, scroll leftwards |
| 1224 | * If we get closer to the edge than 'sidescrolloff', scroll a little |
| 1225 | * extra |
| 1226 | */ |
Bram Moolenaar | 375e339 | 2019-01-31 18:26:10 +0100 | [diff] [blame] | 1227 | off_left = (int)startcol - (int)curwin->w_leftcol - siso; |
Bram Moolenaar | 0263146 | 2017-09-22 15:20:32 +0200 | [diff] [blame] | 1228 | off_right = (int)endcol - (int)(curwin->w_leftcol + curwin->w_width |
Bram Moolenaar | 375e339 | 2019-01-31 18:26:10 +0100 | [diff] [blame] | 1229 | - siso) + 1; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1230 | if (off_left < 0 || off_right > 0) |
| 1231 | { |
| 1232 | if (off_left < 0) |
| 1233 | diff = -off_left; |
| 1234 | else |
| 1235 | diff = off_right; |
| 1236 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1237 | // When far off or not enough room on either side, put cursor in |
| 1238 | // middle of window. |
Bram Moolenaar | 856c5d2 | 2022-10-13 21:54:28 +0100 | [diff] [blame] | 1239 | if (p_ss == 0 || diff >= width1 / 2 || off_right >= off_left) |
| 1240 | new_leftcol = curwin->w_wcol - extra - width1 / 2; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1241 | else |
| 1242 | { |
| 1243 | if (diff < p_ss) |
| 1244 | diff = p_ss; |
| 1245 | if (off_left < 0) |
| 1246 | new_leftcol = curwin->w_leftcol - diff; |
| 1247 | else |
| 1248 | new_leftcol = curwin->w_leftcol + diff; |
| 1249 | } |
| 1250 | if (new_leftcol < 0) |
| 1251 | new_leftcol = 0; |
| 1252 | if (new_leftcol != (int)curwin->w_leftcol) |
| 1253 | { |
| 1254 | curwin->w_leftcol = new_leftcol; |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1255 | // screen has to be redrawn with new curwin->w_leftcol |
Bram Moolenaar | a4d158b | 2022-08-14 14:17:45 +0100 | [diff] [blame] | 1256 | redraw_later(UPD_NOT_VALID); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1257 | } |
| 1258 | } |
| 1259 | curwin->w_wcol -= curwin->w_leftcol; |
| 1260 | } |
| 1261 | else if (curwin->w_wcol > (int)curwin->w_leftcol) |
| 1262 | curwin->w_wcol -= curwin->w_leftcol; |
| 1263 | else |
| 1264 | curwin->w_wcol = 0; |
| 1265 | |
| 1266 | #ifdef FEAT_DIFF |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1267 | // Skip over filler lines. At the top use w_topfill, there |
| 1268 | // may be some filler lines above the window. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1269 | if (curwin->w_cursor.lnum == curwin->w_topline) |
| 1270 | curwin->w_wrow += curwin->w_topfill; |
| 1271 | else |
| 1272 | curwin->w_wrow += diff_check_fill(curwin, curwin->w_cursor.lnum); |
| 1273 | #endif |
| 1274 | |
| 1275 | prev_skipcol = curwin->w_skipcol; |
| 1276 | |
| 1277 | p_lines = 0; |
Bram Moolenaar | 375e339 | 2019-01-31 18:26:10 +0100 | [diff] [blame] | 1278 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1279 | if ((curwin->w_wrow >= curwin->w_height |
| 1280 | || ((prev_skipcol > 0 |
Bram Moolenaar | 375e339 | 2019-01-31 18:26:10 +0100 | [diff] [blame] | 1281 | || curwin->w_wrow + so >= curwin->w_height) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1282 | && (p_lines = |
| 1283 | #ifdef FEAT_DIFF |
| 1284 | plines_win_nofill |
| 1285 | #else |
| 1286 | plines_win |
| 1287 | #endif |
| 1288 | (curwin, curwin->w_cursor.lnum, FALSE)) |
| 1289 | - 1 >= curwin->w_height)) |
| 1290 | && curwin->w_height != 0 |
| 1291 | && curwin->w_cursor.lnum == curwin->w_topline |
Bram Moolenaar | 856c5d2 | 2022-10-13 21:54:28 +0100 | [diff] [blame] | 1292 | && width2 > 0 |
Bram Moolenaar | 4033c55 | 2017-09-16 20:54:51 +0200 | [diff] [blame] | 1293 | && curwin->w_width != 0) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1294 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1295 | // Cursor past end of screen. Happens with a single line that does |
| 1296 | // not fit on screen. Find a skipcol to show the text around the |
| 1297 | // cursor. Avoid scrolling all the time. compute value of "extra": |
| 1298 | // 1: Less than 'scrolloff' lines above |
| 1299 | // 2: Less than 'scrolloff' lines below |
| 1300 | // 3: both of them |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1301 | extra = 0; |
Bram Moolenaar | 856c5d2 | 2022-10-13 21:54:28 +0100 | [diff] [blame] | 1302 | if (curwin->w_skipcol + so * width2 > curwin->w_virtcol) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1303 | extra = 1; |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1304 | // Compute last display line of the buffer line that we want at the |
| 1305 | // bottom of the window. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1306 | if (p_lines == 0) |
| 1307 | p_lines = plines_win(curwin, curwin->w_cursor.lnum, FALSE); |
| 1308 | --p_lines; |
Bram Moolenaar | 375e339 | 2019-01-31 18:26:10 +0100 | [diff] [blame] | 1309 | if (p_lines > curwin->w_wrow + so) |
| 1310 | n = curwin->w_wrow + so; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1311 | else |
| 1312 | n = p_lines; |
Bram Moolenaar | 856c5d2 | 2022-10-13 21:54:28 +0100 | [diff] [blame] | 1313 | if ((colnr_T)n >= curwin->w_height + curwin->w_skipcol / width2 - so) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1314 | extra += 2; |
| 1315 | |
Bram Moolenaar | 4b6172e | 2022-10-13 20:23:28 +0100 | [diff] [blame] | 1316 | if (extra == 3 || curwin->w_height <= so * 2) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1317 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1318 | // not enough room for 'scrolloff', put cursor in the middle |
Bram Moolenaar | 856c5d2 | 2022-10-13 21:54:28 +0100 | [diff] [blame] | 1319 | n = curwin->w_virtcol / width2; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1320 | if (n > curwin->w_height / 2) |
| 1321 | n -= curwin->w_height / 2; |
| 1322 | else |
| 1323 | n = 0; |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1324 | // don't skip more than necessary |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1325 | if (n > p_lines - curwin->w_height + 1) |
| 1326 | n = p_lines - curwin->w_height + 1; |
Bram Moolenaar | 856c5d2 | 2022-10-13 21:54:28 +0100 | [diff] [blame] | 1327 | curwin->w_skipcol = n * width2; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1328 | } |
| 1329 | else if (extra == 1) |
| 1330 | { |
Dominique Pelle | af4a61a | 2021-12-27 17:21:41 +0000 | [diff] [blame] | 1331 | // less than 'scrolloff' lines above, decrease skipcol |
Bram Moolenaar | 856c5d2 | 2022-10-13 21:54:28 +0100 | [diff] [blame] | 1332 | extra = (curwin->w_skipcol + so * width2 - curwin->w_virtcol |
| 1333 | + width2 - 1) / width2; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1334 | if (extra > 0) |
| 1335 | { |
Bram Moolenaar | 856c5d2 | 2022-10-13 21:54:28 +0100 | [diff] [blame] | 1336 | if ((colnr_T)(extra * width2) > curwin->w_skipcol) |
| 1337 | extra = curwin->w_skipcol / width2; |
| 1338 | curwin->w_skipcol -= extra * width2; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1339 | } |
| 1340 | } |
| 1341 | else if (extra == 2) |
| 1342 | { |
Dominique Pelle | af4a61a | 2021-12-27 17:21:41 +0000 | [diff] [blame] | 1343 | // less than 'scrolloff' lines below, increase skipcol |
Bram Moolenaar | 856c5d2 | 2022-10-13 21:54:28 +0100 | [diff] [blame] | 1344 | endcol = (n - curwin->w_height + 1) * width2; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1345 | while (endcol > curwin->w_virtcol) |
Bram Moolenaar | 856c5d2 | 2022-10-13 21:54:28 +0100 | [diff] [blame] | 1346 | endcol -= width2; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1347 | if (endcol > curwin->w_skipcol) |
| 1348 | curwin->w_skipcol = endcol; |
| 1349 | } |
| 1350 | |
Bram Moolenaar | 4b6172e | 2022-10-13 20:23:28 +0100 | [diff] [blame] | 1351 | // adjust w_wrow for the changed w_skipcol |
| 1352 | if (did_sub_skipcol) |
Bram Moolenaar | 856c5d2 | 2022-10-13 21:54:28 +0100 | [diff] [blame] | 1353 | curwin->w_wrow -= (curwin->w_skipcol - prev_skipcol) / width2; |
Bram Moolenaar | 4b6172e | 2022-10-13 20:23:28 +0100 | [diff] [blame] | 1354 | else |
Bram Moolenaar | 856c5d2 | 2022-10-13 21:54:28 +0100 | [diff] [blame] | 1355 | curwin->w_wrow -= curwin->w_skipcol / width2; |
Bram Moolenaar | 4b6172e | 2022-10-13 20:23:28 +0100 | [diff] [blame] | 1356 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1357 | if (curwin->w_wrow >= curwin->w_height) |
| 1358 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1359 | // small window, make sure cursor is in it |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1360 | extra = curwin->w_wrow - curwin->w_height + 1; |
Bram Moolenaar | 856c5d2 | 2022-10-13 21:54:28 +0100 | [diff] [blame] | 1361 | curwin->w_skipcol += extra * width2; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1362 | curwin->w_wrow -= extra; |
| 1363 | } |
| 1364 | |
Bram Moolenaar | 856c5d2 | 2022-10-13 21:54:28 +0100 | [diff] [blame] | 1365 | extra = ((int)prev_skipcol - (int)curwin->w_skipcol) / width2; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1366 | if (extra > 0) |
| 1367 | win_ins_lines(curwin, 0, extra, FALSE, FALSE); |
| 1368 | else if (extra < 0) |
Bram Moolenaar | cfce717 | 2017-08-17 20:31:48 +0200 | [diff] [blame] | 1369 | win_del_lines(curwin, 0, -extra, FALSE, FALSE, 0); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1370 | } |
Bram Moolenaar | f6196f4 | 2022-10-02 21:29:55 +0100 | [diff] [blame] | 1371 | else if (!curwin->w_p_sms) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1372 | curwin->w_skipcol = 0; |
| 1373 | if (prev_skipcol != curwin->w_skipcol) |
Bram Moolenaar | f32fb93 | 2022-11-17 11:34:38 +0000 | [diff] [blame] | 1374 | redraw_later(UPD_SOME_VALID); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1375 | |
Bram Moolenaar | 2b48ad5 | 2006-03-12 21:56:11 +0000 | [diff] [blame] | 1376 | #ifdef FEAT_SYN_HL |
zeertzjq | 3e559cd | 2022-03-27 19:26:55 +0100 | [diff] [blame] | 1377 | redraw_for_cursorcolumn(curwin); |
Bram Moolenaar | b679875 | 2014-03-27 12:11:48 +0100 | [diff] [blame] | 1378 | #endif |
Bram Moolenaar | e52e0c8 | 2020-02-28 22:20:10 +0100 | [diff] [blame] | 1379 | #if defined(FEAT_PROP_POPUP) && defined(FEAT_TERMINAL) |
| 1380 | if (popup_is_popup(curwin) && curbuf->b_term != NULL) |
| 1381 | { |
| 1382 | curwin->w_wrow += popup_top_extra(curwin); |
| 1383 | curwin->w_wcol += popup_left_extra(curwin); |
Bram Moolenaar | 6a07644 | 2020-11-15 20:32:58 +0100 | [diff] [blame] | 1384 | curwin->w_flags |= WFLAG_WCOL_OFF_ADDED + WFLAG_WROW_OFF_ADDED; |
Bram Moolenaar | e52e0c8 | 2020-02-28 22:20:10 +0100 | [diff] [blame] | 1385 | } |
Bram Moolenaar | 6a07644 | 2020-11-15 20:32:58 +0100 | [diff] [blame] | 1386 | else |
| 1387 | curwin->w_flags &= ~(WFLAG_WCOL_OFF_ADDED + WFLAG_WROW_OFF_ADDED); |
Bram Moolenaar | e52e0c8 | 2020-02-28 22:20:10 +0100 | [diff] [blame] | 1388 | #endif |
Bram Moolenaar | 2b48ad5 | 2006-03-12 21:56:11 +0000 | [diff] [blame] | 1389 | |
Bram Moolenaar | 2fbabd2 | 2022-10-12 19:53:38 +0100 | [diff] [blame] | 1390 | // now w_leftcol and w_skipcol are valid, avoid check_cursor_moved() |
| 1391 | // thinking otherwise |
Bram Moolenaar | 08f2363 | 2019-11-16 14:19:33 +0100 | [diff] [blame] | 1392 | curwin->w_valid_leftcol = curwin->w_leftcol; |
Bram Moolenaar | 2fbabd2 | 2022-10-12 19:53:38 +0100 | [diff] [blame] | 1393 | curwin->w_valid_skipcol = curwin->w_skipcol; |
Bram Moolenaar | 08f2363 | 2019-11-16 14:19:33 +0100 | [diff] [blame] | 1394 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1395 | curwin->w_valid |= VALID_WCOL|VALID_WROW|VALID_VIRTCOL; |
| 1396 | } |
| 1397 | |
Bram Moolenaar | 05ad5ff | 2019-11-30 22:48:27 +0100 | [diff] [blame] | 1398 | #if (defined(FEAT_EVAL) || defined(FEAT_PROP_POPUP)) || defined(PROTO) |
Bram Moolenaar | b3d17a2 | 2019-07-07 18:28:14 +0200 | [diff] [blame] | 1399 | /* |
| 1400 | * Compute the screen position of text character at "pos" in window "wp" |
| 1401 | * The resulting values are one-based, zero when character is not visible. |
| 1402 | */ |
Bram Moolenaar | 12034e2 | 2019-08-25 22:25:02 +0200 | [diff] [blame] | 1403 | void |
Bram Moolenaar | b3d17a2 | 2019-07-07 18:28:14 +0200 | [diff] [blame] | 1404 | textpos2screenpos( |
| 1405 | win_T *wp, |
| 1406 | pos_T *pos, |
| 1407 | int *rowp, // screen row |
| 1408 | int *scolp, // start screen column |
| 1409 | int *ccolp, // cursor screen column |
| 1410 | int *ecolp) // end screen column |
| 1411 | { |
| 1412 | colnr_T scol = 0, ccol = 0, ecol = 0; |
| 1413 | int row = 0; |
| 1414 | int rowoff = 0; |
| 1415 | colnr_T coloff = 0; |
| 1416 | |
Bram Moolenaar | 189663b | 2021-07-21 18:04:56 +0200 | [diff] [blame] | 1417 | if (pos->lnum >= wp->w_topline && pos->lnum <= wp->w_botline) |
Bram Moolenaar | b3d17a2 | 2019-07-07 18:28:14 +0200 | [diff] [blame] | 1418 | { |
Bram Moolenaar | 4556a2e | 2022-02-15 13:40:17 +0000 | [diff] [blame] | 1419 | colnr_T off; |
| 1420 | colnr_T col; |
| 1421 | int width; |
| 1422 | linenr_T lnum = pos->lnum; |
| 1423 | #ifdef FEAT_FOLDING |
| 1424 | int is_folded; |
Bram Moolenaar | b3d17a2 | 2019-07-07 18:28:14 +0200 | [diff] [blame] | 1425 | |
Bram Moolenaar | 4556a2e | 2022-02-15 13:40:17 +0000 | [diff] [blame] | 1426 | is_folded = hasFoldingWin(wp, lnum, &lnum, NULL, TRUE, NULL); |
| 1427 | #endif |
| 1428 | row = plines_m_win(wp, wp->w_topline, lnum - 1) + 1; |
| 1429 | #ifdef FEAT_FOLDING |
| 1430 | if (is_folded) |
Bram Moolenaar | b3d17a2 | 2019-07-07 18:28:14 +0200 | [diff] [blame] | 1431 | { |
Bram Moolenaar | 7924a17 | 2022-01-24 16:15:15 +0000 | [diff] [blame] | 1432 | row += W_WINROW(wp); |
Bram Moolenaar | 4556a2e | 2022-02-15 13:40:17 +0000 | [diff] [blame] | 1433 | coloff = wp->w_wincol + 1; |
Bram Moolenaar | 7924a17 | 2022-01-24 16:15:15 +0000 | [diff] [blame] | 1434 | } |
Bram Moolenaar | b3d17a2 | 2019-07-07 18:28:14 +0200 | [diff] [blame] | 1435 | else |
Bram Moolenaar | 4556a2e | 2022-02-15 13:40:17 +0000 | [diff] [blame] | 1436 | #endif |
| 1437 | { |
| 1438 | getvcol(wp, pos, &scol, &ccol, &ecol); |
| 1439 | |
| 1440 | // similar to what is done in validate_cursor_col() |
| 1441 | col = scol; |
| 1442 | off = win_col_off(wp); |
| 1443 | col += off; |
| 1444 | width = wp->w_width - off + win_col_off2(wp); |
| 1445 | |
| 1446 | // long line wrapping, adjust row |
| 1447 | if (wp->w_p_wrap |
| 1448 | && col >= (colnr_T)wp->w_width |
| 1449 | && width > 0) |
| 1450 | { |
| 1451 | // use same formula as what is used in curs_columns() |
| 1452 | rowoff = ((col - wp->w_width) / width + 1); |
| 1453 | col -= rowoff * width; |
| 1454 | } |
| 1455 | col -= wp->w_leftcol; |
| 1456 | if (col >= wp->w_width) |
| 1457 | col = -1; |
| 1458 | if (col >= 0 && row + rowoff <= wp->w_height) |
| 1459 | { |
| 1460 | coloff = col - scol + wp->w_wincol + 1; |
| 1461 | row += W_WINROW(wp); |
| 1462 | } |
| 1463 | else |
| 1464 | // character is left, right or below of the window |
| 1465 | row = rowoff = scol = ccol = ecol = 0; |
| 1466 | } |
Bram Moolenaar | b3d17a2 | 2019-07-07 18:28:14 +0200 | [diff] [blame] | 1467 | } |
Bram Moolenaar | 7924a17 | 2022-01-24 16:15:15 +0000 | [diff] [blame] | 1468 | *rowp = row + rowoff; |
Bram Moolenaar | b3d17a2 | 2019-07-07 18:28:14 +0200 | [diff] [blame] | 1469 | *scolp = scol + coloff; |
| 1470 | *ccolp = ccol + coloff; |
| 1471 | *ecolp = ecol + coloff; |
| 1472 | } |
Bram Moolenaar | 12034e2 | 2019-08-25 22:25:02 +0200 | [diff] [blame] | 1473 | #endif |
Bram Moolenaar | b3d17a2 | 2019-07-07 18:28:14 +0200 | [diff] [blame] | 1474 | |
Bram Moolenaar | 12034e2 | 2019-08-25 22:25:02 +0200 | [diff] [blame] | 1475 | #if defined(FEAT_EVAL) || defined(PROTO) |
Bram Moolenaar | b3d17a2 | 2019-07-07 18:28:14 +0200 | [diff] [blame] | 1476 | /* |
| 1477 | * "screenpos({winid}, {lnum}, {col})" function |
| 1478 | */ |
| 1479 | void |
| 1480 | f_screenpos(typval_T *argvars UNUSED, typval_T *rettv) |
| 1481 | { |
| 1482 | dict_T *dict; |
| 1483 | win_T *wp; |
| 1484 | pos_T pos; |
| 1485 | int row = 0; |
| 1486 | int scol = 0, ccol = 0, ecol = 0; |
| 1487 | |
Bram Moolenaar | 93a1096 | 2022-06-16 11:42:09 +0100 | [diff] [blame] | 1488 | if (rettv_dict_alloc(rettv) == FAIL) |
Bram Moolenaar | b3d17a2 | 2019-07-07 18:28:14 +0200 | [diff] [blame] | 1489 | return; |
| 1490 | dict = rettv->vval.v_dict; |
| 1491 | |
Yegappan Lakshmanan | 4490ec4 | 2021-07-27 22:00:44 +0200 | [diff] [blame] | 1492 | if (in_vim9script() |
| 1493 | && (check_for_number_arg(argvars, 0) == FAIL |
| 1494 | || check_for_number_arg(argvars, 1) == FAIL |
| 1495 | || check_for_number_arg(argvars, 2) == FAIL)) |
| 1496 | return; |
| 1497 | |
Bram Moolenaar | b3d17a2 | 2019-07-07 18:28:14 +0200 | [diff] [blame] | 1498 | wp = find_win_by_nr_or_id(&argvars[0]); |
| 1499 | if (wp == NULL) |
| 1500 | return; |
| 1501 | |
| 1502 | pos.lnum = tv_get_number(&argvars[1]); |
Bram Moolenaar | 99d1943 | 2022-12-05 16:23:24 +0000 | [diff] [blame] | 1503 | if (pos.lnum > wp->w_buffer->b_ml.ml_line_count) |
| 1504 | { |
| 1505 | semsg(_(e_invalid_line_number_nr), pos.lnum); |
| 1506 | return; |
| 1507 | } |
Bram Moolenaar | b3d17a2 | 2019-07-07 18:28:14 +0200 | [diff] [blame] | 1508 | pos.col = tv_get_number(&argvars[2]) - 1; |
| 1509 | pos.coladd = 0; |
| 1510 | textpos2screenpos(wp, &pos, &row, &scol, &ccol, &ecol); |
| 1511 | |
| 1512 | dict_add_number(dict, "row", row); |
| 1513 | dict_add_number(dict, "col", scol); |
| 1514 | dict_add_number(dict, "curscol", ccol); |
| 1515 | dict_add_number(dict, "endcol", ecol); |
| 1516 | } |
Bram Moolenaar | 5a6ec10 | 2022-05-27 21:58:00 +0100 | [diff] [blame] | 1517 | |
| 1518 | /* |
| 1519 | * "virtcol2col({winid}, {lnum}, {col})" function |
| 1520 | */ |
| 1521 | void |
| 1522 | f_virtcol2col(typval_T *argvars UNUSED, typval_T *rettv) |
| 1523 | { |
| 1524 | win_T *wp; |
| 1525 | linenr_T lnum; |
| 1526 | int screencol; |
| 1527 | int error = FALSE; |
| 1528 | |
| 1529 | rettv->vval.v_number = -1; |
| 1530 | |
| 1531 | if (check_for_number_arg(argvars, 0) == FAIL |
| 1532 | || check_for_number_arg(argvars, 1) == FAIL |
| 1533 | || check_for_number_arg(argvars, 2) == FAIL) |
| 1534 | return; |
| 1535 | |
| 1536 | wp = find_win_by_nr_or_id(&argvars[0]); |
| 1537 | if (wp == NULL) |
| 1538 | return; |
| 1539 | |
| 1540 | lnum = tv_get_number_chk(&argvars[1], &error); |
| 1541 | if (error || lnum < 0 || lnum > wp->w_buffer->b_ml.ml_line_count) |
| 1542 | return; |
| 1543 | |
| 1544 | screencol = tv_get_number_chk(&argvars[2], &error); |
| 1545 | if (error || screencol < 0) |
| 1546 | return; |
| 1547 | |
| 1548 | rettv->vval.v_number = vcol2col(wp, lnum, screencol); |
| 1549 | } |
Bram Moolenaar | b3d17a2 | 2019-07-07 18:28:14 +0200 | [diff] [blame] | 1550 | #endif |
| 1551 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1552 | /* |
| 1553 | * Scroll the current window down by "line_count" logical lines. "CTRL-Y" |
| 1554 | */ |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1555 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 1556 | scrolldown( |
| 1557 | long line_count, |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1558 | int byfold UNUSED) // TRUE: count a closed fold as one line |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1559 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1560 | long done = 0; // total # of physical lines done |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1561 | int wrow; |
| 1562 | int moved = FALSE; |
Bram Moolenaar | 1a58e1d | 2022-10-06 13:09:17 +0100 | [diff] [blame] | 1563 | int do_sms = curwin->w_p_wrap && curwin->w_p_sms; |
Bram Moolenaar | f6196f4 | 2022-10-02 21:29:55 +0100 | [diff] [blame] | 1564 | int width1 = 0; |
| 1565 | int width2 = 0; |
| 1566 | |
Bram Moolenaar | 1a58e1d | 2022-10-06 13:09:17 +0100 | [diff] [blame] | 1567 | if (do_sms) |
Bram Moolenaar | f6196f4 | 2022-10-02 21:29:55 +0100 | [diff] [blame] | 1568 | { |
| 1569 | width1 = curwin->w_width - curwin_col_off(); |
Bram Moolenaar | 6b2d4ff | 2022-10-03 14:06:02 +0100 | [diff] [blame] | 1570 | width2 = width1 + curwin_col_off2(); |
Bram Moolenaar | f6196f4 | 2022-10-02 21:29:55 +0100 | [diff] [blame] | 1571 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1572 | |
| 1573 | #ifdef FEAT_FOLDING |
| 1574 | linenr_T first; |
| 1575 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1576 | // Make sure w_topline is at the first of a sequence of folded lines. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1577 | (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
| 1578 | #endif |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1579 | validate_cursor(); // w_wrow needs to be valid |
Bram Moolenaar | 1a58e1d | 2022-10-06 13:09:17 +0100 | [diff] [blame] | 1580 | for (int todo = line_count; todo > 0; --todo) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1581 | { |
| 1582 | #ifdef FEAT_DIFF |
Bram Moolenaar | fa316dd | 2009-11-03 15:23:14 +0000 | [diff] [blame] | 1583 | if (curwin->w_topfill < diff_check(curwin, curwin->w_topline) |
| 1584 | && curwin->w_topfill < curwin->w_height - 1) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1585 | { |
| 1586 | ++curwin->w_topfill; |
| 1587 | ++done; |
| 1588 | } |
| 1589 | else |
| 1590 | #endif |
| 1591 | { |
Bram Moolenaar | 8df9748 | 2022-10-03 12:11:13 +0100 | [diff] [blame] | 1592 | // break when at the very top |
| 1593 | if (curwin->w_topline == 1 |
Bram Moolenaar | 1a58e1d | 2022-10-06 13:09:17 +0100 | [diff] [blame] | 1594 | && (!do_sms || curwin->w_skipcol < width1)) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1595 | break; |
Bram Moolenaar | 1a58e1d | 2022-10-06 13:09:17 +0100 | [diff] [blame] | 1596 | if (do_sms && curwin->w_skipcol >= width1) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1597 | { |
Bram Moolenaar | 8df9748 | 2022-10-03 12:11:13 +0100 | [diff] [blame] | 1598 | // scroll a screen line down |
Bram Moolenaar | f6196f4 | 2022-10-02 21:29:55 +0100 | [diff] [blame] | 1599 | if (curwin->w_skipcol >= width1 + width2) |
| 1600 | curwin->w_skipcol -= width2; |
| 1601 | else |
| 1602 | curwin->w_skipcol -= width1; |
| 1603 | redraw_later(UPD_NOT_VALID); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1604 | ++done; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1605 | } |
| 1606 | else |
Bram Moolenaar | f6196f4 | 2022-10-02 21:29:55 +0100 | [diff] [blame] | 1607 | { |
Bram Moolenaar | 8df9748 | 2022-10-03 12:11:13 +0100 | [diff] [blame] | 1608 | // scroll a text line down |
Bram Moolenaar | f6196f4 | 2022-10-02 21:29:55 +0100 | [diff] [blame] | 1609 | --curwin->w_topline; |
| 1610 | curwin->w_skipcol = 0; |
| 1611 | #ifdef FEAT_DIFF |
| 1612 | curwin->w_topfill = 0; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1613 | #endif |
Bram Moolenaar | f6196f4 | 2022-10-02 21:29:55 +0100 | [diff] [blame] | 1614 | #ifdef FEAT_FOLDING |
| 1615 | // A sequence of folded lines only counts for one logical line |
| 1616 | if (hasFolding(curwin->w_topline, &first, NULL)) |
| 1617 | { |
| 1618 | ++done; |
| 1619 | if (!byfold) |
Bram Moolenaar | 1a58e1d | 2022-10-06 13:09:17 +0100 | [diff] [blame] | 1620 | todo -= curwin->w_topline - first - 1; |
Bram Moolenaar | f6196f4 | 2022-10-02 21:29:55 +0100 | [diff] [blame] | 1621 | curwin->w_botline -= curwin->w_topline - first; |
| 1622 | curwin->w_topline = first; |
| 1623 | } |
| 1624 | else |
| 1625 | #endif |
Bram Moolenaar | 1a58e1d | 2022-10-06 13:09:17 +0100 | [diff] [blame] | 1626 | if (do_sms) |
Bram Moolenaar | f6196f4 | 2022-10-02 21:29:55 +0100 | [diff] [blame] | 1627 | { |
| 1628 | int size = win_linetabsize(curwin, curwin->w_topline, |
| 1629 | ml_get(curwin->w_topline), (colnr_T)MAXCOL); |
| 1630 | if (size > width1) |
| 1631 | { |
| 1632 | curwin->w_skipcol = width1; |
| 1633 | size -= width1; |
| 1634 | redraw_later(UPD_NOT_VALID); |
| 1635 | } |
| 1636 | while (size > width2) |
| 1637 | { |
| 1638 | curwin->w_skipcol += width2; |
| 1639 | size -= width2; |
| 1640 | } |
| 1641 | ++done; |
| 1642 | } |
| 1643 | else |
| 1644 | done += PLINES_NOFILL(curwin->w_topline); |
| 1645 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1646 | } |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1647 | --curwin->w_botline; // approximate w_botline |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1648 | invalidate_botline(); |
| 1649 | } |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1650 | curwin->w_wrow += done; // keep w_wrow updated |
| 1651 | curwin->w_cline_row += done; // keep w_cline_row updated |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1652 | |
| 1653 | #ifdef FEAT_DIFF |
| 1654 | if (curwin->w_cursor.lnum == curwin->w_topline) |
| 1655 | curwin->w_cline_row = 0; |
| 1656 | check_topfill(curwin, TRUE); |
| 1657 | #endif |
| 1658 | |
| 1659 | /* |
| 1660 | * Compute the row number of the last row of the cursor line |
| 1661 | * and move the cursor onto the displayed part of the window. |
| 1662 | */ |
| 1663 | wrow = curwin->w_wrow; |
Bram Moolenaar | 4033c55 | 2017-09-16 20:54:51 +0200 | [diff] [blame] | 1664 | if (curwin->w_p_wrap && curwin->w_width != 0) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1665 | { |
| 1666 | validate_virtcol(); |
| 1667 | validate_cheight(); |
| 1668 | wrow += curwin->w_cline_height - 1 - |
Bram Moolenaar | 0263146 | 2017-09-22 15:20:32 +0200 | [diff] [blame] | 1669 | curwin->w_virtcol / curwin->w_width; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1670 | } |
| 1671 | while (wrow >= curwin->w_height && curwin->w_cursor.lnum > 1) |
| 1672 | { |
| 1673 | #ifdef FEAT_FOLDING |
| 1674 | if (hasFolding(curwin->w_cursor.lnum, &first, NULL)) |
| 1675 | { |
| 1676 | --wrow; |
| 1677 | if (first == 1) |
| 1678 | curwin->w_cursor.lnum = 1; |
| 1679 | else |
| 1680 | curwin->w_cursor.lnum = first - 1; |
| 1681 | } |
| 1682 | else |
| 1683 | #endif |
| 1684 | wrow -= plines(curwin->w_cursor.lnum--); |
| 1685 | curwin->w_valid &= |
| 1686 | ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); |
| 1687 | moved = TRUE; |
| 1688 | } |
| 1689 | if (moved) |
| 1690 | { |
| 1691 | #ifdef FEAT_FOLDING |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1692 | // Move cursor to first line of closed fold. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1693 | foldAdjustCursor(); |
| 1694 | #endif |
| 1695 | coladvance(curwin->w_curswant); |
| 1696 | } |
Bram Moolenaar | 8cf3459 | 2022-10-08 21:13:40 +0100 | [diff] [blame] | 1697 | |
| 1698 | if (curwin->w_cursor.lnum == curwin->w_topline && do_sms) |
| 1699 | { |
Bram Moolenaar | c9121f7 | 2022-10-14 20:09:04 +0100 | [diff] [blame] | 1700 | long so = get_scrolloff_value(); |
Bram Moolenaar | 118c235 | 2022-10-09 17:19:27 +0100 | [diff] [blame] | 1701 | int scrolloff_cols = so == 0 ? 0 : width1 + (so - 1) * width2; |
| 1702 | |
Bram Moolenaar | 8cf3459 | 2022-10-08 21:13:40 +0100 | [diff] [blame] | 1703 | // make sure the cursor is in the visible text |
| 1704 | validate_virtcol(); |
Bram Moolenaar | 118c235 | 2022-10-09 17:19:27 +0100 | [diff] [blame] | 1705 | int col = curwin->w_virtcol - curwin->w_skipcol + scrolloff_cols; |
Bram Moolenaar | 8cf3459 | 2022-10-08 21:13:40 +0100 | [diff] [blame] | 1706 | int row = 0; |
| 1707 | if (col >= width1) |
| 1708 | { |
| 1709 | col -= width1; |
| 1710 | ++row; |
| 1711 | } |
| 1712 | if (col > width2) |
| 1713 | { |
| 1714 | row += col / width2; |
| 1715 | col = col % width2; |
| 1716 | } |
| 1717 | if (row >= curwin->w_height) |
Bram Moolenaar | 118c235 | 2022-10-09 17:19:27 +0100 | [diff] [blame] | 1718 | { |
| 1719 | curwin->w_curswant = curwin->w_virtcol |
| 1720 | - (row - curwin->w_height + 1) * width2; |
| 1721 | coladvance(curwin->w_curswant); |
| 1722 | } |
Bram Moolenaar | 8cf3459 | 2022-10-08 21:13:40 +0100 | [diff] [blame] | 1723 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1724 | } |
| 1725 | |
| 1726 | /* |
Bram Moolenaar | d5337ef | 2022-10-20 20:15:47 +0100 | [diff] [blame] | 1727 | * Return TRUE if scrollup() will scroll by screen line rather than text line. |
| 1728 | */ |
| 1729 | static int |
| 1730 | scrolling_screenlines(int byfold UNUSED) |
| 1731 | { |
| 1732 | return (curwin->w_p_wrap && curwin->w_p_sms) |
| 1733 | # ifdef FEAT_FOLDING |
| 1734 | || (byfold && hasAnyFolding(curwin)) |
| 1735 | # endif |
| 1736 | # ifdef FEAT_DIFF |
| 1737 | || curwin->w_p_diff |
| 1738 | # endif |
| 1739 | ; |
| 1740 | } |
| 1741 | |
| 1742 | /* |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1743 | * Scroll the current window up by "line_count" logical lines. "CTRL-E" |
| 1744 | */ |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1745 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 1746 | scrollup( |
| 1747 | long line_count, |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1748 | int byfold UNUSED) // TRUE: count a closed fold as one line |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1749 | { |
Bram Moolenaar | 1a58e1d | 2022-10-06 13:09:17 +0100 | [diff] [blame] | 1750 | int do_sms = curwin->w_p_wrap && curwin->w_p_sms; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1751 | |
Bram Moolenaar | d5337ef | 2022-10-20 20:15:47 +0100 | [diff] [blame] | 1752 | if (scrolling_screenlines(byfold)) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1753 | { |
Bram Moolenaar | 6b2d4ff | 2022-10-03 14:06:02 +0100 | [diff] [blame] | 1754 | int width1 = curwin->w_width - curwin_col_off(); |
| 1755 | int width2 = width1 + curwin_col_off2(); |
| 1756 | int size = 0; |
| 1757 | linenr_T prev_topline = curwin->w_topline; |
| 1758 | |
Bram Moolenaar | 1a58e1d | 2022-10-06 13:09:17 +0100 | [diff] [blame] | 1759 | if (do_sms) |
Bram Moolenaar | c9121f7 | 2022-10-14 20:09:04 +0100 | [diff] [blame] | 1760 | size = linetabsize(curwin, curwin->w_topline); |
Bram Moolenaar | 6b2d4ff | 2022-10-03 14:06:02 +0100 | [diff] [blame] | 1761 | |
| 1762 | // diff mode: first consume "topfill" |
| 1763 | // 'smoothscroll': increase "w_skipcol" until it goes over the end of |
| 1764 | // the line, then advance to the next line. |
| 1765 | // folding: count each sequence of folded lines as one logical line. |
| 1766 | for (int todo = line_count; todo > 0; --todo) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1767 | { |
| 1768 | # ifdef FEAT_DIFF |
| 1769 | if (curwin->w_topfill > 0) |
| 1770 | --curwin->w_topfill; |
| 1771 | else |
| 1772 | # endif |
| 1773 | { |
Bram Moolenaar | 6b2d4ff | 2022-10-03 14:06:02 +0100 | [diff] [blame] | 1774 | linenr_T lnum = curwin->w_topline; |
| 1775 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1776 | # ifdef FEAT_FOLDING |
| 1777 | if (byfold) |
Bram Moolenaar | 6b2d4ff | 2022-10-03 14:06:02 +0100 | [diff] [blame] | 1778 | // for a closed fold: go to the last line in the fold |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1779 | (void)hasFolding(lnum, NULL, &lnum); |
| 1780 | # endif |
Bram Moolenaar | 8cf3459 | 2022-10-08 21:13:40 +0100 | [diff] [blame] | 1781 | if (lnum == curwin->w_topline && do_sms) |
Bram Moolenaar | f6196f4 | 2022-10-02 21:29:55 +0100 | [diff] [blame] | 1782 | { |
Bram Moolenaar | 6b2d4ff | 2022-10-03 14:06:02 +0100 | [diff] [blame] | 1783 | // 'smoothscroll': increase "w_skipcol" until it goes over |
| 1784 | // the end of the line, then advance to the next line. |
| 1785 | int add = curwin->w_skipcol > 0 ? width2 : width1; |
| 1786 | curwin->w_skipcol += add; |
| 1787 | if (curwin->w_skipcol >= size) |
| 1788 | { |
| 1789 | if (lnum == curbuf->b_ml.ml_line_count) |
| 1790 | { |
| 1791 | // at the last screen line, can't scroll further |
| 1792 | curwin->w_skipcol -= add; |
| 1793 | break; |
| 1794 | } |
| 1795 | ++lnum; |
| 1796 | } |
Bram Moolenaar | f6196f4 | 2022-10-02 21:29:55 +0100 | [diff] [blame] | 1797 | } |
Bram Moolenaar | 6b2d4ff | 2022-10-03 14:06:02 +0100 | [diff] [blame] | 1798 | else |
| 1799 | { |
| 1800 | if (lnum >= curbuf->b_ml.ml_line_count) |
| 1801 | break; |
| 1802 | ++lnum; |
| 1803 | } |
| 1804 | |
| 1805 | if (lnum > curwin->w_topline) |
| 1806 | { |
| 1807 | // approximate w_botline |
| 1808 | curwin->w_botline += lnum - curwin->w_topline; |
| 1809 | curwin->w_topline = lnum; |
| 1810 | # ifdef FEAT_DIFF |
| 1811 | curwin->w_topfill = diff_check_fill(curwin, lnum); |
| 1812 | # endif |
| 1813 | curwin->w_skipcol = 0; |
Bram Moolenaar | 1a58e1d | 2022-10-06 13:09:17 +0100 | [diff] [blame] | 1814 | if (todo > 1 && do_sms) |
Bram Moolenaar | c9121f7 | 2022-10-14 20:09:04 +0100 | [diff] [blame] | 1815 | size = linetabsize(curwin, curwin->w_topline); |
Bram Moolenaar | 6b2d4ff | 2022-10-03 14:06:02 +0100 | [diff] [blame] | 1816 | } |
Bram Moolenaar | f6196f4 | 2022-10-02 21:29:55 +0100 | [diff] [blame] | 1817 | } |
| 1818 | } |
Bram Moolenaar | 6b2d4ff | 2022-10-03 14:06:02 +0100 | [diff] [blame] | 1819 | |
Bram Moolenaar | f6196f4 | 2022-10-02 21:29:55 +0100 | [diff] [blame] | 1820 | if (curwin->w_topline == prev_topline) |
| 1821 | // need to redraw even though w_topline didn't change |
| 1822 | redraw_later(UPD_NOT_VALID); |
| 1823 | } |
| 1824 | else |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1825 | { |
| 1826 | curwin->w_topline += line_count; |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1827 | curwin->w_botline += line_count; // approximate w_botline |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1828 | } |
| 1829 | |
| 1830 | if (curwin->w_topline > curbuf->b_ml.ml_line_count) |
| 1831 | curwin->w_topline = curbuf->b_ml.ml_line_count; |
| 1832 | if (curwin->w_botline > curbuf->b_ml.ml_line_count + 1) |
| 1833 | curwin->w_botline = curbuf->b_ml.ml_line_count + 1; |
| 1834 | |
| 1835 | #ifdef FEAT_DIFF |
| 1836 | check_topfill(curwin, FALSE); |
| 1837 | #endif |
| 1838 | |
| 1839 | #ifdef FEAT_FOLDING |
| 1840 | if (hasAnyFolding(curwin)) |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1841 | // Make sure w_topline is at the first of a sequence of folded lines. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1842 | (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
| 1843 | #endif |
| 1844 | |
| 1845 | curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); |
| 1846 | if (curwin->w_cursor.lnum < curwin->w_topline) |
| 1847 | { |
| 1848 | curwin->w_cursor.lnum = curwin->w_topline; |
| 1849 | curwin->w_valid &= |
| 1850 | ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); |
| 1851 | coladvance(curwin->w_curswant); |
| 1852 | } |
Bram Moolenaar | 8cf3459 | 2022-10-08 21:13:40 +0100 | [diff] [blame] | 1853 | if (curwin->w_cursor.lnum == curwin->w_topline |
| 1854 | && do_sms && curwin->w_skipcol > 0) |
| 1855 | { |
Yee Cheng Chin | 81ba26e | 2022-11-18 12:52:50 +0000 | [diff] [blame] | 1856 | int col_off = curwin_col_off(); |
| 1857 | int col_off2 = curwin_col_off2(); |
| 1858 | |
| 1859 | int width1 = curwin->w_width - col_off; |
| 1860 | int width2 = width1 + col_off2; |
| 1861 | int extra2 = col_off - col_off2; |
Bram Moolenaar | c9121f7 | 2022-10-14 20:09:04 +0100 | [diff] [blame] | 1862 | long so = get_scrolloff_value(); |
Bram Moolenaar | 118c235 | 2022-10-09 17:19:27 +0100 | [diff] [blame] | 1863 | int scrolloff_cols = so == 0 ? 0 : width1 + (so - 1) * width2; |
Bram Moolenaar | c9121f7 | 2022-10-14 20:09:04 +0100 | [diff] [blame] | 1864 | int space_cols = (curwin->w_height - 1) * width2; |
Bram Moolenaar | 118c235 | 2022-10-09 17:19:27 +0100 | [diff] [blame] | 1865 | |
Yee Cheng Chin | 81ba26e | 2022-11-18 12:52:50 +0000 | [diff] [blame] | 1866 | // If we have non-zero scrolloff, just ignore the <<< marker as we are |
| 1867 | // going past it anyway. |
| 1868 | int smoothscroll_overlap = scrolloff_cols != 0 ? 0 : |
| 1869 | smoothscroll_marker_overlap(extra2); |
| 1870 | |
Bram Moolenaar | 118c235 | 2022-10-09 17:19:27 +0100 | [diff] [blame] | 1871 | // Make sure the cursor is in a visible part of the line, taking |
| 1872 | // 'scrolloff' into account, but using screen lines. |
Bram Moolenaar | c9121f7 | 2022-10-14 20:09:04 +0100 | [diff] [blame] | 1873 | // If there are not enough screen lines put the cursor in the middle. |
| 1874 | if (scrolloff_cols > space_cols / 2) |
| 1875 | scrolloff_cols = space_cols / 2; |
Bram Moolenaar | 8cf3459 | 2022-10-08 21:13:40 +0100 | [diff] [blame] | 1876 | validate_virtcol(); |
Yee Cheng Chin | 81ba26e | 2022-11-18 12:52:50 +0000 | [diff] [blame] | 1877 | if (curwin->w_virtcol < curwin->w_skipcol |
| 1878 | + smoothscroll_overlap + scrolloff_cols) |
Bram Moolenaar | 8cf3459 | 2022-10-08 21:13:40 +0100 | [diff] [blame] | 1879 | { |
Bram Moolenaar | 8cf3459 | 2022-10-08 21:13:40 +0100 | [diff] [blame] | 1880 | colnr_T col = curwin->w_virtcol; |
| 1881 | |
| 1882 | if (col < width1) |
| 1883 | col += width1; |
Yee Cheng Chin | 81ba26e | 2022-11-18 12:52:50 +0000 | [diff] [blame] | 1884 | while (col < curwin->w_skipcol |
| 1885 | + smoothscroll_overlap + scrolloff_cols) |
Bram Moolenaar | 8cf3459 | 2022-10-08 21:13:40 +0100 | [diff] [blame] | 1886 | col += width2; |
Bram Moolenaar | 118c235 | 2022-10-09 17:19:27 +0100 | [diff] [blame] | 1887 | curwin->w_curswant = col; |
| 1888 | coladvance(curwin->w_curswant); |
Bram Moolenaar | 2fbabd2 | 2022-10-12 19:53:38 +0100 | [diff] [blame] | 1889 | |
| 1890 | // validate_virtcol() marked various things as valid, but after |
| 1891 | // moving the cursor they need to be recomputed |
| 1892 | curwin->w_valid &= |
| 1893 | ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); |
Bram Moolenaar | 8cf3459 | 2022-10-08 21:13:40 +0100 | [diff] [blame] | 1894 | } |
| 1895 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1896 | } |
| 1897 | |
Bram Moolenaar | 2fbabd2 | 2022-10-12 19:53:38 +0100 | [diff] [blame] | 1898 | /* |
| 1899 | * Called after changing the cursor column: make sure that curwin->w_skipcol is |
| 1900 | * valid for 'smoothscroll'. |
| 1901 | */ |
| 1902 | void |
| 1903 | adjust_skipcol(void) |
| 1904 | { |
| 1905 | if (!curwin->w_p_wrap |
| 1906 | || !curwin->w_p_sms |
| 1907 | || curwin->w_cursor.lnum != curwin->w_topline) |
| 1908 | return; |
| 1909 | |
| 1910 | int width1 = curwin->w_width - curwin_col_off(); |
| 1911 | int width2 = width1 + curwin_col_off2(); |
Bram Moolenaar | c9121f7 | 2022-10-14 20:09:04 +0100 | [diff] [blame] | 1912 | long so = get_scrolloff_value(); |
Bram Moolenaar | 2fbabd2 | 2022-10-12 19:53:38 +0100 | [diff] [blame] | 1913 | int scrolloff_cols = so == 0 ? 0 : width1 + (so - 1) * width2; |
| 1914 | int scrolled = FALSE; |
| 1915 | |
Bram Moolenaar | d5337ef | 2022-10-20 20:15:47 +0100 | [diff] [blame] | 1916 | validate_cheight(); |
Bram Moolenaar | b21b8e9 | 2022-12-03 18:35:07 +0000 | [diff] [blame] | 1917 | if (curwin->w_cline_height == curwin->w_height |
| 1918 | // w_cline_height may be capped at w_height, check there aren't |
| 1919 | // actually more lines. |
| 1920 | && plines_win(curwin, curwin->w_cursor.lnum, FALSE) |
| 1921 | <= curwin->w_height) |
Bram Moolenaar | c9121f7 | 2022-10-14 20:09:04 +0100 | [diff] [blame] | 1922 | { |
| 1923 | // the line just fits in the window, don't scroll |
Bram Moolenaar | f32fb93 | 2022-11-17 11:34:38 +0000 | [diff] [blame] | 1924 | reset_skipcol(); |
Bram Moolenaar | c9121f7 | 2022-10-14 20:09:04 +0100 | [diff] [blame] | 1925 | return; |
| 1926 | } |
| 1927 | |
Bram Moolenaar | d5337ef | 2022-10-20 20:15:47 +0100 | [diff] [blame] | 1928 | validate_virtcol(); |
Bram Moolenaar | 2fbabd2 | 2022-10-12 19:53:38 +0100 | [diff] [blame] | 1929 | while (curwin->w_skipcol > 0 |
| 1930 | && curwin->w_virtcol < curwin->w_skipcol + 3 + scrolloff_cols) |
| 1931 | { |
| 1932 | // scroll a screen line down |
| 1933 | if (curwin->w_skipcol >= width1 + width2) |
| 1934 | curwin->w_skipcol -= width2; |
| 1935 | else |
| 1936 | curwin->w_skipcol -= width1; |
| 1937 | redraw_later(UPD_NOT_VALID); |
| 1938 | scrolled = TRUE; |
| 1939 | validate_virtcol(); |
| 1940 | } |
| 1941 | if (scrolled) |
| 1942 | return; // don't scroll in the other direction now |
| 1943 | |
| 1944 | int col = curwin->w_virtcol - curwin->w_skipcol + scrolloff_cols; |
| 1945 | int row = 0; |
| 1946 | if (col >= width1) |
| 1947 | { |
| 1948 | col -= width1; |
| 1949 | ++row; |
| 1950 | } |
| 1951 | if (col > width2) |
| 1952 | { |
| 1953 | row += col / width2; |
| 1954 | col = col % width2; |
| 1955 | } |
| 1956 | if (row >= curwin->w_height) |
| 1957 | { |
| 1958 | if (curwin->w_skipcol == 0) |
| 1959 | { |
| 1960 | curwin->w_skipcol += width1; |
| 1961 | --row; |
| 1962 | } |
| 1963 | if (row >= curwin->w_height) |
| 1964 | curwin->w_skipcol += (row - curwin->w_height) * width2; |
| 1965 | redraw_later(UPD_NOT_VALID); |
| 1966 | } |
| 1967 | } |
| 1968 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1969 | #ifdef FEAT_DIFF |
| 1970 | /* |
| 1971 | * Don't end up with too many filler lines in the window. |
| 1972 | */ |
| 1973 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 1974 | check_topfill( |
| 1975 | win_T *wp, |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 1976 | int down) // when TRUE scroll down when not enough space |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1977 | { |
| 1978 | int n; |
| 1979 | |
| 1980 | if (wp->w_topfill > 0) |
| 1981 | { |
| 1982 | n = plines_win_nofill(wp, wp->w_topline, TRUE); |
| 1983 | if (wp->w_topfill + n > wp->w_height) |
| 1984 | { |
| 1985 | if (down && wp->w_topline > 1) |
| 1986 | { |
| 1987 | --wp->w_topline; |
| 1988 | wp->w_topfill = 0; |
| 1989 | } |
| 1990 | else |
| 1991 | { |
| 1992 | wp->w_topfill = wp->w_height - n; |
| 1993 | if (wp->w_topfill < 0) |
| 1994 | wp->w_topfill = 0; |
| 1995 | } |
| 1996 | } |
| 1997 | } |
| 1998 | } |
| 1999 | |
| 2000 | /* |
| 2001 | * Use as many filler lines as possible for w_topline. Make sure w_topline |
| 2002 | * is still visible. |
| 2003 | */ |
| 2004 | static void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 2005 | max_topfill(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2006 | { |
| 2007 | int n; |
| 2008 | |
| 2009 | n = plines_nofill(curwin->w_topline); |
| 2010 | if (n >= curwin->w_height) |
| 2011 | curwin->w_topfill = 0; |
| 2012 | else |
| 2013 | { |
| 2014 | curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); |
| 2015 | if (curwin->w_topfill + n > curwin->w_height) |
| 2016 | curwin->w_topfill = curwin->w_height - n; |
| 2017 | } |
| 2018 | } |
| 2019 | #endif |
| 2020 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2021 | /* |
| 2022 | * Scroll the screen one line down, but don't do it if it would move the |
| 2023 | * cursor off the screen. |
| 2024 | */ |
| 2025 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 2026 | scrolldown_clamp(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2027 | { |
| 2028 | int end_row; |
| 2029 | #ifdef FEAT_DIFF |
| 2030 | int can_fill = (curwin->w_topfill |
| 2031 | < diff_check_fill(curwin, curwin->w_topline)); |
| 2032 | #endif |
| 2033 | |
| 2034 | if (curwin->w_topline <= 1 |
| 2035 | #ifdef FEAT_DIFF |
| 2036 | && !can_fill |
| 2037 | #endif |
| 2038 | ) |
| 2039 | return; |
| 2040 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2041 | validate_cursor(); // w_wrow needs to be valid |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2042 | |
| 2043 | /* |
| 2044 | * Compute the row number of the last row of the cursor line |
| 2045 | * and make sure it doesn't go off the screen. Make sure the cursor |
| 2046 | * doesn't go past 'scrolloff' lines from the screen end. |
| 2047 | */ |
| 2048 | end_row = curwin->w_wrow; |
| 2049 | #ifdef FEAT_DIFF |
| 2050 | if (can_fill) |
| 2051 | ++end_row; |
| 2052 | else |
| 2053 | end_row += plines_nofill(curwin->w_topline - 1); |
| 2054 | #else |
| 2055 | end_row += plines(curwin->w_topline - 1); |
| 2056 | #endif |
Bram Moolenaar | 4033c55 | 2017-09-16 20:54:51 +0200 | [diff] [blame] | 2057 | if (curwin->w_p_wrap && curwin->w_width != 0) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2058 | { |
| 2059 | validate_cheight(); |
| 2060 | validate_virtcol(); |
| 2061 | end_row += curwin->w_cline_height - 1 - |
Bram Moolenaar | 0263146 | 2017-09-22 15:20:32 +0200 | [diff] [blame] | 2062 | curwin->w_virtcol / curwin->w_width; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2063 | } |
Bram Moolenaar | 375e339 | 2019-01-31 18:26:10 +0100 | [diff] [blame] | 2064 | if (end_row < curwin->w_height - get_scrolloff_value()) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2065 | { |
| 2066 | #ifdef FEAT_DIFF |
| 2067 | if (can_fill) |
| 2068 | { |
| 2069 | ++curwin->w_topfill; |
| 2070 | check_topfill(curwin, TRUE); |
| 2071 | } |
| 2072 | else |
| 2073 | { |
| 2074 | --curwin->w_topline; |
| 2075 | curwin->w_topfill = 0; |
| 2076 | } |
| 2077 | #else |
| 2078 | --curwin->w_topline; |
| 2079 | #endif |
| 2080 | #ifdef FEAT_FOLDING |
Bram Moolenaar | cde8854 | 2015-08-11 19:14:00 +0200 | [diff] [blame] | 2081 | (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2082 | #endif |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2083 | --curwin->w_botline; // approximate w_botline |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2084 | curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); |
| 2085 | } |
| 2086 | } |
| 2087 | |
| 2088 | /* |
| 2089 | * Scroll the screen one line up, but don't do it if it would move the cursor |
| 2090 | * off the screen. |
| 2091 | */ |
| 2092 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 2093 | scrollup_clamp(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2094 | { |
| 2095 | int start_row; |
| 2096 | |
| 2097 | if (curwin->w_topline == curbuf->b_ml.ml_line_count |
| 2098 | #ifdef FEAT_DIFF |
| 2099 | && curwin->w_topfill == 0 |
| 2100 | #endif |
| 2101 | ) |
| 2102 | return; |
| 2103 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2104 | validate_cursor(); // w_wrow needs to be valid |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2105 | |
| 2106 | /* |
| 2107 | * Compute the row number of the first row of the cursor line |
| 2108 | * and make sure it doesn't go off the screen. Make sure the cursor |
| 2109 | * doesn't go before 'scrolloff' lines from the screen start. |
| 2110 | */ |
| 2111 | #ifdef FEAT_DIFF |
| 2112 | start_row = curwin->w_wrow - plines_nofill(curwin->w_topline) |
| 2113 | - curwin->w_topfill; |
| 2114 | #else |
| 2115 | start_row = curwin->w_wrow - plines(curwin->w_topline); |
| 2116 | #endif |
Bram Moolenaar | 4033c55 | 2017-09-16 20:54:51 +0200 | [diff] [blame] | 2117 | if (curwin->w_p_wrap && curwin->w_width != 0) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2118 | { |
| 2119 | validate_virtcol(); |
Bram Moolenaar | 0263146 | 2017-09-22 15:20:32 +0200 | [diff] [blame] | 2120 | start_row -= curwin->w_virtcol / curwin->w_width; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2121 | } |
Bram Moolenaar | 375e339 | 2019-01-31 18:26:10 +0100 | [diff] [blame] | 2122 | if (start_row >= get_scrolloff_value()) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2123 | { |
| 2124 | #ifdef FEAT_DIFF |
| 2125 | if (curwin->w_topfill > 0) |
| 2126 | --curwin->w_topfill; |
| 2127 | else |
| 2128 | #endif |
Bram Moolenaar | 293ee4d | 2004-12-09 21:34:53 +0000 | [diff] [blame] | 2129 | { |
| 2130 | #ifdef FEAT_FOLDING |
| 2131 | (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); |
| 2132 | #endif |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2133 | ++curwin->w_topline; |
Bram Moolenaar | 293ee4d | 2004-12-09 21:34:53 +0000 | [diff] [blame] | 2134 | } |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2135 | ++curwin->w_botline; // approximate w_botline |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2136 | curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); |
| 2137 | } |
| 2138 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2139 | |
| 2140 | /* |
| 2141 | * Add one line above "lp->lnum". This can be a filler line, a closed fold or |
| 2142 | * a (wrapped) text line. Uses and sets "lp->fill". |
| 2143 | * Returns the height of the added line in "lp->height". |
Bram Moolenaar | bacd9da | 2010-02-17 18:20:37 +0100 | [diff] [blame] | 2144 | * Lines above the first one are incredibly high: MAXCOL. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2145 | */ |
| 2146 | static void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 2147 | topline_back(lineoff_T *lp) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2148 | { |
| 2149 | #ifdef FEAT_DIFF |
| 2150 | if (lp->fill < diff_check_fill(curwin, lp->lnum)) |
| 2151 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2152 | // Add a filler line. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2153 | ++lp->fill; |
| 2154 | lp->height = 1; |
| 2155 | } |
| 2156 | else |
| 2157 | #endif |
| 2158 | { |
| 2159 | --lp->lnum; |
| 2160 | #ifdef FEAT_DIFF |
| 2161 | lp->fill = 0; |
| 2162 | #endif |
| 2163 | if (lp->lnum < 1) |
| 2164 | lp->height = MAXCOL; |
| 2165 | else |
| 2166 | #ifdef FEAT_FOLDING |
| 2167 | if (hasFolding(lp->lnum, &lp->lnum, NULL)) |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2168 | // Add a closed fold |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2169 | lp->height = 1; |
| 2170 | else |
| 2171 | #endif |
Bram Moolenaar | 43335ea | 2015-09-09 20:59:37 +0200 | [diff] [blame] | 2172 | lp->height = PLINES_NOFILL(lp->lnum); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2173 | } |
| 2174 | } |
| 2175 | |
| 2176 | /* |
| 2177 | * Add one line below "lp->lnum". This can be a filler line, a closed fold or |
| 2178 | * a (wrapped) text line. Uses and sets "lp->fill". |
| 2179 | * Returns the height of the added line in "lp->height". |
| 2180 | * Lines below the last one are incredibly high. |
| 2181 | */ |
| 2182 | static void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 2183 | botline_forw(lineoff_T *lp) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2184 | { |
| 2185 | #ifdef FEAT_DIFF |
| 2186 | if (lp->fill < diff_check_fill(curwin, lp->lnum + 1)) |
| 2187 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2188 | // Add a filler line. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2189 | ++lp->fill; |
| 2190 | lp->height = 1; |
| 2191 | } |
| 2192 | else |
| 2193 | #endif |
| 2194 | { |
| 2195 | ++lp->lnum; |
| 2196 | #ifdef FEAT_DIFF |
| 2197 | lp->fill = 0; |
| 2198 | #endif |
| 2199 | if (lp->lnum > curbuf->b_ml.ml_line_count) |
| 2200 | lp->height = MAXCOL; |
| 2201 | else |
| 2202 | #ifdef FEAT_FOLDING |
| 2203 | if (hasFolding(lp->lnum, NULL, &lp->lnum)) |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2204 | // Add a closed fold |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2205 | lp->height = 1; |
| 2206 | else |
| 2207 | #endif |
Bram Moolenaar | 43335ea | 2015-09-09 20:59:37 +0200 | [diff] [blame] | 2208 | lp->height = PLINES_NOFILL(lp->lnum); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2209 | } |
| 2210 | } |
| 2211 | |
| 2212 | #ifdef FEAT_DIFF |
| 2213 | /* |
| 2214 | * Switch from including filler lines below lp->lnum to including filler |
| 2215 | * lines above loff.lnum + 1. This keeps pointing to the same line. |
| 2216 | * When there are no filler lines nothing changes. |
| 2217 | */ |
| 2218 | static void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 2219 | botline_topline(lineoff_T *lp) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2220 | { |
| 2221 | if (lp->fill > 0) |
| 2222 | { |
| 2223 | ++lp->lnum; |
| 2224 | lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; |
| 2225 | } |
| 2226 | } |
| 2227 | |
| 2228 | /* |
| 2229 | * Switch from including filler lines above lp->lnum to including filler |
| 2230 | * lines below loff.lnum - 1. This keeps pointing to the same line. |
| 2231 | * When there are no filler lines nothing changes. |
| 2232 | */ |
| 2233 | static void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 2234 | topline_botline(lineoff_T *lp) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2235 | { |
| 2236 | if (lp->fill > 0) |
| 2237 | { |
| 2238 | lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; |
| 2239 | --lp->lnum; |
| 2240 | } |
| 2241 | } |
| 2242 | #endif |
| 2243 | |
| 2244 | /* |
| 2245 | * Recompute topline to put the cursor at the top of the window. |
| 2246 | * Scroll at least "min_scroll" lines. |
| 2247 | * If "always" is TRUE, always set topline (for "zt"). |
| 2248 | */ |
| 2249 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 2250 | scroll_cursor_top(int min_scroll, int always) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2251 | { |
| 2252 | int scrolled = 0; |
| 2253 | int extra = 0; |
| 2254 | int used; |
| 2255 | int i; |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2256 | linenr_T top; // just above displayed lines |
| 2257 | linenr_T bot; // just below displayed lines |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2258 | linenr_T old_topline = curwin->w_topline; |
Bram Moolenaar | 46b5474 | 2022-10-06 15:46:49 +0100 | [diff] [blame] | 2259 | int old_skipcol = curwin->w_skipcol; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2260 | #ifdef FEAT_DIFF |
| 2261 | linenr_T old_topfill = curwin->w_topfill; |
| 2262 | #endif |
| 2263 | linenr_T new_topline; |
Bram Moolenaar | 375e339 | 2019-01-31 18:26:10 +0100 | [diff] [blame] | 2264 | int off = get_scrolloff_value(); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2265 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2266 | if (mouse_dragging > 0) |
| 2267 | off = mouse_dragging - 1; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2268 | |
| 2269 | /* |
| 2270 | * Decrease topline until: |
| 2271 | * - it has become 1 |
| 2272 | * - (part of) the cursor line is moved off the screen or |
| 2273 | * - moved at least 'scrolljump' lines and |
| 2274 | * - at least 'scrolloff' lines above and below the cursor |
| 2275 | */ |
| 2276 | validate_cheight(); |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2277 | used = curwin->w_cline_height; // includes filler lines above |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2278 | if (curwin->w_cursor.lnum < curwin->w_topline) |
| 2279 | scrolled = used; |
| 2280 | |
| 2281 | #ifdef FEAT_FOLDING |
| 2282 | if (hasFolding(curwin->w_cursor.lnum, &top, &bot)) |
| 2283 | { |
| 2284 | --top; |
| 2285 | ++bot; |
| 2286 | } |
| 2287 | else |
| 2288 | #endif |
| 2289 | { |
| 2290 | top = curwin->w_cursor.lnum - 1; |
| 2291 | bot = curwin->w_cursor.lnum + 1; |
| 2292 | } |
| 2293 | new_topline = top + 1; |
| 2294 | |
| 2295 | #ifdef FEAT_DIFF |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2296 | // "used" already contains the number of filler lines above, don't add it |
| 2297 | // again. |
| 2298 | // Hide filler lines above cursor line by adding them to "extra". |
Bram Moolenaar | a09a2c5 | 2015-09-08 17:31:59 +0200 | [diff] [blame] | 2299 | extra += diff_check_fill(curwin, curwin->w_cursor.lnum); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2300 | #endif |
| 2301 | |
| 2302 | /* |
| 2303 | * Check if the lines from "top" to "bot" fit in the window. If they do, |
| 2304 | * set new_topline and advance "top" and "bot" to include more lines. |
| 2305 | */ |
| 2306 | while (top > 0) |
| 2307 | { |
| 2308 | #ifdef FEAT_FOLDING |
| 2309 | if (hasFolding(top, &top, NULL)) |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2310 | // count one logical line for a sequence of folded lines |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2311 | i = 1; |
| 2312 | else |
| 2313 | #endif |
Bram Moolenaar | 43335ea | 2015-09-09 20:59:37 +0200 | [diff] [blame] | 2314 | i = PLINES_NOFILL(top); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2315 | used += i; |
| 2316 | if (extra + i <= off && bot < curbuf->b_ml.ml_line_count) |
| 2317 | { |
| 2318 | #ifdef FEAT_FOLDING |
| 2319 | if (hasFolding(bot, NULL, &bot)) |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2320 | // count one logical line for a sequence of folded lines |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2321 | ++used; |
| 2322 | else |
| 2323 | #endif |
| 2324 | used += plines(bot); |
| 2325 | } |
| 2326 | if (used > curwin->w_height) |
| 2327 | break; |
| 2328 | if (top < curwin->w_topline) |
| 2329 | scrolled += i; |
| 2330 | |
| 2331 | /* |
| 2332 | * If scrolling is needed, scroll at least 'sj' lines. |
| 2333 | */ |
| 2334 | if ((new_topline >= curwin->w_topline || scrolled > min_scroll) |
| 2335 | && extra >= off) |
| 2336 | break; |
| 2337 | |
| 2338 | extra += i; |
| 2339 | new_topline = top; |
| 2340 | --top; |
| 2341 | ++bot; |
| 2342 | } |
| 2343 | |
| 2344 | /* |
| 2345 | * If we don't have enough space, put cursor in the middle. |
| 2346 | * This makes sure we get the same position when using "k" and "j" |
| 2347 | * in a small window. |
| 2348 | */ |
| 2349 | if (used > curwin->w_height) |
| 2350 | scroll_cursor_halfway(FALSE); |
| 2351 | else |
| 2352 | { |
| 2353 | /* |
| 2354 | * If "always" is FALSE, only adjust topline to a lower value, higher |
Bram Moolenaar | 1b73edd | 2022-12-03 11:51:54 +0000 | [diff] [blame] | 2355 | * value may happen with wrapping lines. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2356 | */ |
| 2357 | if (new_topline < curwin->w_topline || always) |
| 2358 | curwin->w_topline = new_topline; |
| 2359 | if (curwin->w_topline > curwin->w_cursor.lnum) |
| 2360 | curwin->w_topline = curwin->w_cursor.lnum; |
| 2361 | #ifdef FEAT_DIFF |
| 2362 | curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); |
| 2363 | if (curwin->w_topfill > 0 && extra > off) |
| 2364 | { |
| 2365 | curwin->w_topfill -= extra - off; |
| 2366 | if (curwin->w_topfill < 0) |
| 2367 | curwin->w_topfill = 0; |
| 2368 | } |
| 2369 | check_topfill(curwin, FALSE); |
| 2370 | #endif |
Bram Moolenaar | 46b5474 | 2022-10-06 15:46:49 +0100 | [diff] [blame] | 2371 | // TODO: if the line doesn't fit may optimize w_skipcol |
Bram Moolenaar | 1b73edd | 2022-12-03 11:51:54 +0000 | [diff] [blame] | 2372 | if (curwin->w_topline == curwin->w_cursor.lnum |
| 2373 | && curwin->w_skipcol >= curwin->w_cursor.col) |
Bram Moolenaar | f32fb93 | 2022-11-17 11:34:38 +0000 | [diff] [blame] | 2374 | reset_skipcol(); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2375 | if (curwin->w_topline != old_topline |
Bram Moolenaar | 46b5474 | 2022-10-06 15:46:49 +0100 | [diff] [blame] | 2376 | || curwin->w_skipcol != old_skipcol |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2377 | #ifdef FEAT_DIFF |
| 2378 | || curwin->w_topfill != old_topfill |
| 2379 | #endif |
| 2380 | ) |
| 2381 | curwin->w_valid &= |
| 2382 | ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); |
| 2383 | curwin->w_valid |= VALID_TOPLINE; |
| 2384 | } |
| 2385 | } |
| 2386 | |
| 2387 | /* |
| 2388 | * Set w_empty_rows and w_filler_rows for window "wp", having used up "used" |
| 2389 | * screen lines for text lines. |
| 2390 | */ |
| 2391 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 2392 | set_empty_rows(win_T *wp, int used) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2393 | { |
| 2394 | #ifdef FEAT_DIFF |
| 2395 | wp->w_filler_rows = 0; |
| 2396 | #endif |
| 2397 | if (used == 0) |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2398 | wp->w_empty_rows = 0; // single line that doesn't fit |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2399 | else |
| 2400 | { |
| 2401 | wp->w_empty_rows = wp->w_height - used; |
| 2402 | #ifdef FEAT_DIFF |
| 2403 | if (wp->w_botline <= wp->w_buffer->b_ml.ml_line_count) |
| 2404 | { |
| 2405 | wp->w_filler_rows = diff_check_fill(wp, wp->w_botline); |
| 2406 | if (wp->w_empty_rows > wp->w_filler_rows) |
| 2407 | wp->w_empty_rows -= wp->w_filler_rows; |
| 2408 | else |
| 2409 | { |
| 2410 | wp->w_filler_rows = wp->w_empty_rows; |
| 2411 | wp->w_empty_rows = 0; |
| 2412 | } |
| 2413 | } |
| 2414 | #endif |
| 2415 | } |
| 2416 | } |
| 2417 | |
| 2418 | /* |
| 2419 | * Recompute topline to put the cursor at the bottom of the window. |
Bram Moolenaar | 8088ae9 | 2022-06-20 11:38:17 +0100 | [diff] [blame] | 2420 | * When scrolling scroll at least "min_scroll" lines. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2421 | * If "set_topbot" is TRUE, set topline and botline first (for "zb"). |
| 2422 | * This is messy stuff!!! |
| 2423 | */ |
| 2424 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 2425 | scroll_cursor_bot(int min_scroll, int set_topbot) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2426 | { |
| 2427 | int used; |
| 2428 | int scrolled = 0; |
Bram Moolenaar | 9bab7a0 | 2022-10-06 14:57:53 +0100 | [diff] [blame] | 2429 | int min_scrolled = 1; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2430 | int extra = 0; |
| 2431 | int i; |
| 2432 | linenr_T line_count; |
| 2433 | linenr_T old_topline = curwin->w_topline; |
| 2434 | lineoff_T loff; |
| 2435 | lineoff_T boff; |
| 2436 | #ifdef FEAT_DIFF |
| 2437 | int old_topfill = curwin->w_topfill; |
| 2438 | int fill_below_window; |
| 2439 | #endif |
| 2440 | linenr_T old_botline = curwin->w_botline; |
| 2441 | linenr_T old_valid = curwin->w_valid; |
| 2442 | int old_empty_rows = curwin->w_empty_rows; |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2443 | linenr_T cln; // Cursor Line Number |
Bram Moolenaar | 6ed545e | 2022-05-09 20:09:23 +0100 | [diff] [blame] | 2444 | long so = get_scrolloff_value(); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2445 | |
| 2446 | cln = curwin->w_cursor.lnum; |
| 2447 | if (set_topbot) |
| 2448 | { |
| 2449 | used = 0; |
| 2450 | curwin->w_botline = cln + 1; |
| 2451 | #ifdef FEAT_DIFF |
| 2452 | loff.fill = 0; |
| 2453 | #endif |
| 2454 | for (curwin->w_topline = curwin->w_botline; |
| 2455 | curwin->w_topline > 1; |
| 2456 | curwin->w_topline = loff.lnum) |
| 2457 | { |
| 2458 | loff.lnum = curwin->w_topline; |
| 2459 | topline_back(&loff); |
Bram Moolenaar | bacd9da | 2010-02-17 18:20:37 +0100 | [diff] [blame] | 2460 | if (loff.height == MAXCOL || used + loff.height > curwin->w_height) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2461 | break; |
| 2462 | used += loff.height; |
| 2463 | #ifdef FEAT_DIFF |
| 2464 | curwin->w_topfill = loff.fill; |
| 2465 | #endif |
| 2466 | } |
| 2467 | set_empty_rows(curwin, used); |
| 2468 | curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; |
| 2469 | if (curwin->w_topline != old_topline |
| 2470 | #ifdef FEAT_DIFF |
| 2471 | || curwin->w_topfill != old_topfill |
| 2472 | #endif |
| 2473 | ) |
| 2474 | curwin->w_valid &= ~(VALID_WROW|VALID_CROW); |
| 2475 | } |
| 2476 | else |
| 2477 | validate_botline(); |
| 2478 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2479 | // The lines of the cursor line itself are always used. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2480 | #ifdef FEAT_DIFF |
| 2481 | used = plines_nofill(cln); |
| 2482 | #else |
| 2483 | validate_cheight(); |
| 2484 | used = curwin->w_cline_height; |
| 2485 | #endif |
| 2486 | |
Yee Cheng Chin | 361895d | 2022-11-19 12:25:16 +0000 | [diff] [blame] | 2487 | // If the cursor is on or below botline, we will at least scroll by the |
| 2488 | // height of the cursor line, which is "used". Correct for empty lines, |
| 2489 | // which are really part of botline. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2490 | if (cln >= curwin->w_botline) |
| 2491 | { |
| 2492 | scrolled = used; |
| 2493 | if (cln == curwin->w_botline) |
| 2494 | scrolled -= curwin->w_empty_rows; |
Bram Moolenaar | 9bab7a0 | 2022-10-06 14:57:53 +0100 | [diff] [blame] | 2495 | min_scrolled = scrolled; |
Yee Cheng Chin | 361895d | 2022-11-19 12:25:16 +0000 | [diff] [blame] | 2496 | if (curwin->w_p_sms && curwin->w_p_wrap) |
| 2497 | { |
| 2498 | // 'smoothscroll' and 'wrap' are set |
| 2499 | if (cln > curwin->w_botline) |
| 2500 | // add screen lines below w_botline |
| 2501 | for (linenr_T lnum = curwin->w_botline + 1; lnum <= cln; ++lnum) |
| 2502 | min_scrolled += PLINES_NOFILL(lnum); |
| 2503 | |
| 2504 | // Calculate how many screen lines the current top line of window |
| 2505 | // occupies. If it is occupying more than the entire window, we |
| 2506 | // need to scroll the additional clipped lines to scroll past the |
| 2507 | // top line before we can move on to the other lines. |
| 2508 | int top_plines = |
| 2509 | #ifdef FEAT_DIFF |
| 2510 | plines_win_nofill |
| 2511 | #else |
| 2512 | plines_win |
| 2513 | #endif |
| 2514 | (curwin, curwin->w_topline, FALSE); |
| 2515 | int skip_lines = 0; |
| 2516 | int width1 = curwin->w_width - curwin_col_off(); |
| 2517 | int width2 = width1 + curwin_col_off2(); |
| 2518 | // similar formula is used in curs_columns() |
| 2519 | if (curwin->w_skipcol > width1) |
| 2520 | skip_lines += (curwin->w_skipcol - width1) / width2 + 1; |
| 2521 | else if (curwin->w_skipcol > 0) |
| 2522 | skip_lines = 1; |
| 2523 | |
| 2524 | top_plines -= skip_lines; |
| 2525 | if (top_plines > curwin->w_height) |
| 2526 | { |
| 2527 | scrolled += (top_plines - curwin->w_height); |
| 2528 | min_scrolled += (top_plines - curwin->w_height); |
| 2529 | } |
| 2530 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2531 | } |
| 2532 | |
| 2533 | /* |
| 2534 | * Stop counting lines to scroll when |
| 2535 | * - hitting start of the file |
| 2536 | * - scrolled nothing or at least 'sj' lines |
Bram Moolenaar | 375e339 | 2019-01-31 18:26:10 +0100 | [diff] [blame] | 2537 | * - at least 'scrolloff' lines below the cursor |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2538 | * - lines between botline and cursor have been counted |
| 2539 | */ |
| 2540 | #ifdef FEAT_FOLDING |
| 2541 | if (!hasFolding(curwin->w_cursor.lnum, &loff.lnum, &boff.lnum)) |
| 2542 | #endif |
| 2543 | { |
| 2544 | loff.lnum = cln; |
| 2545 | boff.lnum = cln; |
| 2546 | } |
| 2547 | #ifdef FEAT_DIFF |
| 2548 | loff.fill = 0; |
| 2549 | boff.fill = 0; |
| 2550 | fill_below_window = diff_check_fill(curwin, curwin->w_botline) |
| 2551 | - curwin->w_filler_rows; |
| 2552 | #endif |
| 2553 | |
| 2554 | while (loff.lnum > 1) |
| 2555 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2556 | // Stop when scrolled nothing or at least "min_scroll", found "extra" |
| 2557 | // context for 'scrolloff' and counted all lines below the window. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2558 | if ((((scrolled <= 0 || scrolled >= min_scroll) |
Bram Moolenaar | a1cb1d1 | 2019-10-17 23:00:07 +0200 | [diff] [blame] | 2559 | && extra >= (mouse_dragging > 0 ? mouse_dragging - 1 : so)) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2560 | || boff.lnum + 1 > curbuf->b_ml.ml_line_count) |
| 2561 | && loff.lnum <= curwin->w_botline |
| 2562 | #ifdef FEAT_DIFF |
| 2563 | && (loff.lnum < curwin->w_botline |
| 2564 | || loff.fill >= fill_below_window) |
| 2565 | #endif |
| 2566 | ) |
| 2567 | break; |
| 2568 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2569 | // Add one line above |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2570 | topline_back(&loff); |
Bram Moolenaar | bacd9da | 2010-02-17 18:20:37 +0100 | [diff] [blame] | 2571 | if (loff.height == MAXCOL) |
| 2572 | used = MAXCOL; |
| 2573 | else |
| 2574 | used += loff.height; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2575 | if (used > curwin->w_height) |
| 2576 | break; |
| 2577 | if (loff.lnum >= curwin->w_botline |
| 2578 | #ifdef FEAT_DIFF |
| 2579 | && (loff.lnum > curwin->w_botline |
| 2580 | || loff.fill <= fill_below_window) |
| 2581 | #endif |
| 2582 | ) |
| 2583 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2584 | // Count screen lines that are below the window. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2585 | scrolled += loff.height; |
| 2586 | if (loff.lnum == curwin->w_botline |
| 2587 | #ifdef FEAT_DIFF |
Bram Moolenaar | 4e303c8 | 2018-11-24 14:27:44 +0100 | [diff] [blame] | 2588 | && loff.fill == 0 |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2589 | #endif |
| 2590 | ) |
| 2591 | scrolled -= curwin->w_empty_rows; |
| 2592 | } |
| 2593 | |
| 2594 | if (boff.lnum < curbuf->b_ml.ml_line_count) |
| 2595 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2596 | // Add one line below |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2597 | botline_forw(&boff); |
| 2598 | used += boff.height; |
| 2599 | if (used > curwin->w_height) |
| 2600 | break; |
Bram Moolenaar | a1cb1d1 | 2019-10-17 23:00:07 +0200 | [diff] [blame] | 2601 | if (extra < ( mouse_dragging > 0 ? mouse_dragging - 1 : so) |
| 2602 | || scrolled < min_scroll) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2603 | { |
| 2604 | extra += boff.height; |
| 2605 | if (boff.lnum >= curwin->w_botline |
| 2606 | #ifdef FEAT_DIFF |
| 2607 | || (boff.lnum + 1 == curwin->w_botline |
| 2608 | && boff.fill > curwin->w_filler_rows) |
| 2609 | #endif |
| 2610 | ) |
| 2611 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2612 | // Count screen lines that are below the window. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2613 | scrolled += boff.height; |
| 2614 | if (boff.lnum == curwin->w_botline |
| 2615 | #ifdef FEAT_DIFF |
| 2616 | && boff.fill == 0 |
| 2617 | #endif |
| 2618 | ) |
| 2619 | scrolled -= curwin->w_empty_rows; |
| 2620 | } |
| 2621 | } |
| 2622 | } |
| 2623 | } |
| 2624 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2625 | // curwin->w_empty_rows is larger, no need to scroll |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2626 | if (scrolled <= 0) |
| 2627 | line_count = 0; |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2628 | // more than a screenfull, don't scroll but redraw |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2629 | else if (used > curwin->w_height) |
| 2630 | line_count = used; |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2631 | // scroll minimal number of lines |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2632 | else |
| 2633 | { |
| 2634 | line_count = 0; |
| 2635 | #ifdef FEAT_DIFF |
| 2636 | boff.fill = curwin->w_topfill; |
| 2637 | #endif |
| 2638 | boff.lnum = curwin->w_topline - 1; |
| 2639 | for (i = 0; i < scrolled && boff.lnum < curwin->w_botline; ) |
| 2640 | { |
| 2641 | botline_forw(&boff); |
| 2642 | i += boff.height; |
| 2643 | ++line_count; |
| 2644 | } |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2645 | if (i < scrolled) // below curwin->w_botline, don't scroll |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2646 | line_count = 9999; |
| 2647 | } |
| 2648 | |
| 2649 | /* |
| 2650 | * Scroll up if the cursor is off the bottom of the screen a bit. |
| 2651 | * Otherwise put it at 1/2 of the screen. |
| 2652 | */ |
| 2653 | if (line_count >= curwin->w_height && line_count > min_scroll) |
| 2654 | scroll_cursor_halfway(FALSE); |
| 2655 | else |
Bram Moolenaar | 9bab7a0 | 2022-10-06 14:57:53 +0100 | [diff] [blame] | 2656 | { |
Bram Moolenaar | d5337ef | 2022-10-20 20:15:47 +0100 | [diff] [blame] | 2657 | // With 'smoothscroll' scroll at least the height of the cursor line, |
| 2658 | // unless it would move the cursor. |
| 2659 | if (curwin->w_p_wrap && curwin->w_p_sms && line_count < min_scrolled |
| 2660 | && (curwin->w_cursor.lnum < curwin->w_topline |
| 2661 | || (curwin->w_virtcol - curwin->w_skipcol >= |
| 2662 | curwin->w_width - curwin_col_off()))) |
Bram Moolenaar | 9bab7a0 | 2022-10-06 14:57:53 +0100 | [diff] [blame] | 2663 | line_count = min_scrolled; |
Bram Moolenaar | d5337ef | 2022-10-20 20:15:47 +0100 | [diff] [blame] | 2664 | if (line_count > 0) |
| 2665 | { |
| 2666 | if (scrolling_screenlines(TRUE)) |
| 2667 | scrollup(scrolled, TRUE); // TODO |
| 2668 | else |
| 2669 | scrollup(line_count, TRUE); |
| 2670 | } |
Bram Moolenaar | 9bab7a0 | 2022-10-06 14:57:53 +0100 | [diff] [blame] | 2671 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2672 | |
| 2673 | /* |
| 2674 | * If topline didn't change we need to restore w_botline and w_empty_rows |
| 2675 | * (we changed them). |
| 2676 | * If topline did change, update_screen() will set botline. |
| 2677 | */ |
| 2678 | if (curwin->w_topline == old_topline && set_topbot) |
| 2679 | { |
| 2680 | curwin->w_botline = old_botline; |
| 2681 | curwin->w_empty_rows = old_empty_rows; |
| 2682 | curwin->w_valid = old_valid; |
| 2683 | } |
| 2684 | curwin->w_valid |= VALID_TOPLINE; |
| 2685 | } |
| 2686 | |
| 2687 | /* |
| 2688 | * Recompute topline to put the cursor halfway the window |
| 2689 | * If "atend" is TRUE, also put it halfway at the end of the file. |
| 2690 | */ |
| 2691 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 2692 | scroll_cursor_halfway(int atend) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2693 | { |
| 2694 | int above = 0; |
| 2695 | linenr_T topline; |
| 2696 | #ifdef FEAT_DIFF |
| 2697 | int topfill = 0; |
| 2698 | #endif |
| 2699 | int below = 0; |
| 2700 | int used; |
| 2701 | lineoff_T loff; |
| 2702 | lineoff_T boff; |
Bram Moolenaar | b8e2305 | 2014-02-11 18:58:09 +0100 | [diff] [blame] | 2703 | #ifdef FEAT_DIFF |
Bram Moolenaar | 12a0f22 | 2014-02-11 15:47:46 +0100 | [diff] [blame] | 2704 | linenr_T old_topline = curwin->w_topline; |
Bram Moolenaar | b8e2305 | 2014-02-11 18:58:09 +0100 | [diff] [blame] | 2705 | #endif |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2706 | |
Bram Moolenaar | 3697c9b | 2020-09-26 22:03:00 +0200 | [diff] [blame] | 2707 | #ifdef FEAT_PROP_POPUP |
| 2708 | // if the width changed this needs to be updated first |
| 2709 | may_update_popup_position(); |
| 2710 | #endif |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2711 | loff.lnum = boff.lnum = curwin->w_cursor.lnum; |
| 2712 | #ifdef FEAT_FOLDING |
| 2713 | (void)hasFolding(loff.lnum, &loff.lnum, &boff.lnum); |
| 2714 | #endif |
| 2715 | #ifdef FEAT_DIFF |
| 2716 | used = plines_nofill(loff.lnum); |
| 2717 | loff.fill = 0; |
| 2718 | boff.fill = 0; |
| 2719 | #else |
| 2720 | used = plines(loff.lnum); |
| 2721 | #endif |
| 2722 | topline = loff.lnum; |
| 2723 | while (topline > 1) |
| 2724 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2725 | if (below <= above) // add a line below the cursor first |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2726 | { |
| 2727 | if (boff.lnum < curbuf->b_ml.ml_line_count) |
| 2728 | { |
| 2729 | botline_forw(&boff); |
| 2730 | used += boff.height; |
| 2731 | if (used > curwin->w_height) |
| 2732 | break; |
| 2733 | below += boff.height; |
| 2734 | } |
| 2735 | else |
| 2736 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2737 | ++below; // count a "~" line |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2738 | if (atend) |
| 2739 | ++used; |
| 2740 | } |
| 2741 | } |
| 2742 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2743 | if (below > above) // add a line above the cursor |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2744 | { |
| 2745 | topline_back(&loff); |
Bram Moolenaar | bacd9da | 2010-02-17 18:20:37 +0100 | [diff] [blame] | 2746 | if (loff.height == MAXCOL) |
| 2747 | used = MAXCOL; |
| 2748 | else |
| 2749 | used += loff.height; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2750 | if (used > curwin->w_height) |
| 2751 | break; |
| 2752 | above += loff.height; |
| 2753 | topline = loff.lnum; |
| 2754 | #ifdef FEAT_DIFF |
| 2755 | topfill = loff.fill; |
| 2756 | #endif |
| 2757 | } |
| 2758 | } |
| 2759 | #ifdef FEAT_FOLDING |
| 2760 | if (!hasFolding(topline, &curwin->w_topline, NULL)) |
| 2761 | #endif |
| 2762 | curwin->w_topline = topline; |
| 2763 | #ifdef FEAT_DIFF |
| 2764 | curwin->w_topfill = topfill; |
Bram Moolenaar | 12a0f22 | 2014-02-11 15:47:46 +0100 | [diff] [blame] | 2765 | if (old_topline > curwin->w_topline + curwin->w_height) |
| 2766 | curwin->w_botfill = FALSE; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2767 | check_topfill(curwin, FALSE); |
| 2768 | #endif |
| 2769 | curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); |
| 2770 | curwin->w_valid |= VALID_TOPLINE; |
| 2771 | } |
| 2772 | |
| 2773 | /* |
| 2774 | * Correct the cursor position so that it is in a part of the screen at least |
Bram Moolenaar | 375e339 | 2019-01-31 18:26:10 +0100 | [diff] [blame] | 2775 | * 'scrolloff' lines from the top and bottom, if possible. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2776 | * If not possible, put it at the same position as scroll_cursor_halfway(). |
| 2777 | * When called topline must be valid! |
| 2778 | */ |
| 2779 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 2780 | cursor_correct(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2781 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2782 | int above = 0; // screen lines above topline |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2783 | linenr_T topline; |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2784 | int below = 0; // screen lines below botline |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2785 | linenr_T botline; |
| 2786 | int above_wanted, below_wanted; |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2787 | linenr_T cln; // Cursor Line Number |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2788 | int max_off; |
Bram Moolenaar | 6ed545e | 2022-05-09 20:09:23 +0100 | [diff] [blame] | 2789 | long so = get_scrolloff_value(); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2790 | |
| 2791 | /* |
| 2792 | * How many lines we would like to have above/below the cursor depends on |
| 2793 | * whether the first/last line of the file is on screen. |
| 2794 | */ |
Bram Moolenaar | 375e339 | 2019-01-31 18:26:10 +0100 | [diff] [blame] | 2795 | above_wanted = so; |
| 2796 | below_wanted = so; |
Bram Moolenaar | 9964e46 | 2007-05-05 17:54:07 +0000 | [diff] [blame] | 2797 | if (mouse_dragging > 0) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2798 | { |
| 2799 | above_wanted = mouse_dragging - 1; |
| 2800 | below_wanted = mouse_dragging - 1; |
| 2801 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2802 | if (curwin->w_topline == 1) |
| 2803 | { |
| 2804 | above_wanted = 0; |
| 2805 | max_off = curwin->w_height / 2; |
| 2806 | if (below_wanted > max_off) |
| 2807 | below_wanted = max_off; |
| 2808 | } |
| 2809 | validate_botline(); |
| 2810 | if (curwin->w_botline == curbuf->b_ml.ml_line_count + 1 |
Bram Moolenaar | a1cb1d1 | 2019-10-17 23:00:07 +0200 | [diff] [blame] | 2811 | && mouse_dragging == 0) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2812 | { |
| 2813 | below_wanted = 0; |
| 2814 | max_off = (curwin->w_height - 1) / 2; |
| 2815 | if (above_wanted > max_off) |
| 2816 | above_wanted = max_off; |
| 2817 | } |
| 2818 | |
| 2819 | /* |
| 2820 | * If there are sufficient file-lines above and below the cursor, we can |
| 2821 | * return now. |
| 2822 | */ |
| 2823 | cln = curwin->w_cursor.lnum; |
| 2824 | if (cln >= curwin->w_topline + above_wanted |
| 2825 | && cln < curwin->w_botline - below_wanted |
| 2826 | #ifdef FEAT_FOLDING |
| 2827 | && !hasAnyFolding(curwin) |
| 2828 | #endif |
| 2829 | ) |
| 2830 | return; |
| 2831 | |
Bram Moolenaar | c9121f7 | 2022-10-14 20:09:04 +0100 | [diff] [blame] | 2832 | if (curwin->w_p_sms && !curwin->w_p_wrap) |
| 2833 | { |
| 2834 | // 'smoothscroll is active |
| 2835 | if (curwin->w_cline_height == curwin->w_height) |
| 2836 | { |
| 2837 | // The cursor line just fits in the window, don't scroll. |
Bram Moolenaar | f32fb93 | 2022-11-17 11:34:38 +0000 | [diff] [blame] | 2838 | reset_skipcol(); |
Bram Moolenaar | c9121f7 | 2022-10-14 20:09:04 +0100 | [diff] [blame] | 2839 | return; |
| 2840 | } |
| 2841 | // TODO: If the cursor line doesn't fit in the window then only adjust |
| 2842 | // w_skipcol. |
| 2843 | } |
| 2844 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2845 | /* |
| 2846 | * Narrow down the area where the cursor can be put by taking lines from |
| 2847 | * the top and the bottom until: |
| 2848 | * - the desired context lines are found |
| 2849 | * - the lines from the top is past the lines from the bottom |
| 2850 | */ |
| 2851 | topline = curwin->w_topline; |
| 2852 | botline = curwin->w_botline - 1; |
| 2853 | #ifdef FEAT_DIFF |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2854 | // count filler lines as context |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2855 | above = curwin->w_topfill; |
| 2856 | below = curwin->w_filler_rows; |
| 2857 | #endif |
| 2858 | while ((above < above_wanted || below < below_wanted) && topline < botline) |
| 2859 | { |
| 2860 | if (below < below_wanted && (below <= above || above >= above_wanted)) |
| 2861 | { |
| 2862 | #ifdef FEAT_FOLDING |
| 2863 | if (hasFolding(botline, &botline, NULL)) |
| 2864 | ++below; |
| 2865 | else |
| 2866 | #endif |
| 2867 | below += plines(botline); |
| 2868 | --botline; |
| 2869 | } |
| 2870 | if (above < above_wanted && (above < below || below >= below_wanted)) |
| 2871 | { |
| 2872 | #ifdef FEAT_FOLDING |
| 2873 | if (hasFolding(topline, NULL, &topline)) |
| 2874 | ++above; |
| 2875 | else |
| 2876 | #endif |
Bram Moolenaar | 43335ea | 2015-09-09 20:59:37 +0200 | [diff] [blame] | 2877 | above += PLINES_NOFILL(topline); |
| 2878 | #ifdef FEAT_DIFF |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2879 | // Count filler lines below this line as context. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2880 | if (topline < botline) |
| 2881 | above += diff_check_fill(curwin, topline + 1); |
| 2882 | #endif |
| 2883 | ++topline; |
| 2884 | } |
| 2885 | } |
| 2886 | if (topline == botline || botline == 0) |
| 2887 | curwin->w_cursor.lnum = topline; |
| 2888 | else if (topline > botline) |
| 2889 | curwin->w_cursor.lnum = botline; |
| 2890 | else |
| 2891 | { |
| 2892 | if (cln < topline && curwin->w_topline > 1) |
| 2893 | { |
| 2894 | curwin->w_cursor.lnum = topline; |
| 2895 | curwin->w_valid &= |
| 2896 | ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); |
| 2897 | } |
| 2898 | if (cln > botline && curwin->w_botline <= curbuf->b_ml.ml_line_count) |
| 2899 | { |
| 2900 | curwin->w_cursor.lnum = botline; |
| 2901 | curwin->w_valid &= |
| 2902 | ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); |
| 2903 | } |
| 2904 | } |
| 2905 | curwin->w_valid |= VALID_TOPLINE; |
| 2906 | } |
| 2907 | |
Bram Moolenaar | 92b8b2d | 2016-01-29 22:36:45 +0100 | [diff] [blame] | 2908 | static void get_scroll_overlap(lineoff_T *lp, int dir); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2909 | |
| 2910 | /* |
Bram Moolenaar | 88456cd | 2022-11-18 22:14:09 +0000 | [diff] [blame] | 2911 | * Move screen "count" pages up ("dir" is BACKWARD) or down ("dir" is FORWARD) |
| 2912 | * and update the screen. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2913 | * |
Yee Cheng Chin | 81ba26e | 2022-11-18 12:52:50 +0000 | [diff] [blame] | 2914 | * Return FAIL for failure, OK otherwise. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2915 | */ |
| 2916 | int |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 2917 | onepage(int dir, long count) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2918 | { |
| 2919 | long n; |
| 2920 | int retval = OK; |
| 2921 | lineoff_T loff; |
| 2922 | linenr_T old_topline = curwin->w_topline; |
Bram Moolenaar | 6ed545e | 2022-05-09 20:09:23 +0100 | [diff] [blame] | 2923 | long so = get_scrolloff_value(); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2924 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2925 | if (curbuf->b_ml.ml_line_count == 1) // nothing to do |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2926 | { |
| 2927 | beep_flush(); |
| 2928 | return FAIL; |
| 2929 | } |
| 2930 | |
| 2931 | for ( ; count > 0; --count) |
| 2932 | { |
| 2933 | validate_botline(); |
| 2934 | /* |
| 2935 | * It's an error to move a page up when the first line is already on |
| 2936 | * the screen. It's an error to move a page down when the last line |
| 2937 | * is on the screen and the topline is 'scrolloff' lines from the |
| 2938 | * last line. |
| 2939 | */ |
| 2940 | if (dir == FORWARD |
Bram Moolenaar | 375e339 | 2019-01-31 18:26:10 +0100 | [diff] [blame] | 2941 | ? ((curwin->w_topline >= curbuf->b_ml.ml_line_count - so) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2942 | && curwin->w_botline > curbuf->b_ml.ml_line_count) |
| 2943 | : (curwin->w_topline == 1 |
| 2944 | #ifdef FEAT_DIFF |
| 2945 | && curwin->w_topfill == |
| 2946 | diff_check_fill(curwin, curwin->w_topline) |
| 2947 | #endif |
| 2948 | )) |
| 2949 | { |
| 2950 | beep_flush(); |
| 2951 | retval = FAIL; |
| 2952 | break; |
| 2953 | } |
| 2954 | |
| 2955 | #ifdef FEAT_DIFF |
| 2956 | loff.fill = 0; |
| 2957 | #endif |
| 2958 | if (dir == FORWARD) |
| 2959 | { |
Bram Moolenaar | a1f4cb9 | 2016-11-06 15:25:42 +0100 | [diff] [blame] | 2960 | if (ONE_WINDOW && p_window > 0 && p_window < Rows - 1) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2961 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2962 | // Vi compatible scrolling |
Bram Moolenaar | 4399ef4 | 2005-02-12 14:29:27 +0000 | [diff] [blame] | 2963 | if (p_window <= 2) |
| 2964 | ++curwin->w_topline; |
| 2965 | else |
| 2966 | curwin->w_topline += p_window - 2; |
| 2967 | if (curwin->w_topline > curbuf->b_ml.ml_line_count) |
| 2968 | curwin->w_topline = curbuf->b_ml.ml_line_count; |
| 2969 | curwin->w_cursor.lnum = curwin->w_topline; |
| 2970 | } |
| 2971 | else if (curwin->w_botline > curbuf->b_ml.ml_line_count) |
| 2972 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2973 | // at end of file |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2974 | curwin->w_topline = curbuf->b_ml.ml_line_count; |
| 2975 | #ifdef FEAT_DIFF |
| 2976 | curwin->w_topfill = 0; |
| 2977 | #endif |
| 2978 | curwin->w_valid &= ~(VALID_WROW|VALID_CROW); |
| 2979 | } |
| 2980 | else |
| 2981 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 2982 | // For the overlap, start with the line just below the window |
| 2983 | // and go upwards. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2984 | loff.lnum = curwin->w_botline; |
| 2985 | #ifdef FEAT_DIFF |
| 2986 | loff.fill = diff_check_fill(curwin, loff.lnum) |
| 2987 | - curwin->w_filler_rows; |
| 2988 | #endif |
| 2989 | get_scroll_overlap(&loff, -1); |
| 2990 | curwin->w_topline = loff.lnum; |
| 2991 | #ifdef FEAT_DIFF |
| 2992 | curwin->w_topfill = loff.fill; |
| 2993 | check_topfill(curwin, FALSE); |
| 2994 | #endif |
| 2995 | curwin->w_cursor.lnum = curwin->w_topline; |
| 2996 | curwin->w_valid &= ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW| |
| 2997 | VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); |
| 2998 | } |
| 2999 | } |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 3000 | else // dir == BACKWARDS |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3001 | { |
| 3002 | #ifdef FEAT_DIFF |
| 3003 | if (curwin->w_topline == 1) |
| 3004 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 3005 | // Include max number of filler lines |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3006 | max_topfill(); |
| 3007 | continue; |
| 3008 | } |
| 3009 | #endif |
Bram Moolenaar | a1f4cb9 | 2016-11-06 15:25:42 +0100 | [diff] [blame] | 3010 | if (ONE_WINDOW && p_window > 0 && p_window < Rows - 1) |
Bram Moolenaar | 4399ef4 | 2005-02-12 14:29:27 +0000 | [diff] [blame] | 3011 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 3012 | // Vi compatible scrolling (sort of) |
Bram Moolenaar | 4399ef4 | 2005-02-12 14:29:27 +0000 | [diff] [blame] | 3013 | if (p_window <= 2) |
| 3014 | --curwin->w_topline; |
| 3015 | else |
| 3016 | curwin->w_topline -= p_window - 2; |
| 3017 | if (curwin->w_topline < 1) |
| 3018 | curwin->w_topline = 1; |
| 3019 | curwin->w_cursor.lnum = curwin->w_topline + p_window - 1; |
| 3020 | if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count) |
| 3021 | curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; |
| 3022 | continue; |
| 3023 | } |
| 3024 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 3025 | // Find the line at the top of the window that is going to be the |
| 3026 | // line at the bottom of the window. Make sure this results in |
| 3027 | // the same line as before doing CTRL-F. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3028 | loff.lnum = curwin->w_topline - 1; |
| 3029 | #ifdef FEAT_DIFF |
| 3030 | loff.fill = diff_check_fill(curwin, loff.lnum + 1) |
| 3031 | - curwin->w_topfill; |
| 3032 | #endif |
| 3033 | get_scroll_overlap(&loff, 1); |
| 3034 | |
| 3035 | if (loff.lnum >= curbuf->b_ml.ml_line_count) |
| 3036 | { |
| 3037 | loff.lnum = curbuf->b_ml.ml_line_count; |
| 3038 | #ifdef FEAT_DIFF |
| 3039 | loff.fill = 0; |
| 3040 | } |
| 3041 | else |
| 3042 | { |
| 3043 | botline_topline(&loff); |
| 3044 | #endif |
| 3045 | } |
| 3046 | curwin->w_cursor.lnum = loff.lnum; |
| 3047 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 3048 | // Find the line just above the new topline to get the right line |
| 3049 | // at the bottom of the window. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3050 | n = 0; |
| 3051 | while (n <= curwin->w_height && loff.lnum >= 1) |
| 3052 | { |
| 3053 | topline_back(&loff); |
Bram Moolenaar | bacd9da | 2010-02-17 18:20:37 +0100 | [diff] [blame] | 3054 | if (loff.height == MAXCOL) |
| 3055 | n = MAXCOL; |
| 3056 | else |
| 3057 | n += loff.height; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3058 | } |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 3059 | if (loff.lnum < 1) // at begin of file |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3060 | { |
| 3061 | curwin->w_topline = 1; |
| 3062 | #ifdef FEAT_DIFF |
| 3063 | max_topfill(); |
| 3064 | #endif |
| 3065 | curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); |
| 3066 | } |
| 3067 | else |
| 3068 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 3069 | // Go two lines forward again. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3070 | #ifdef FEAT_DIFF |
| 3071 | topline_botline(&loff); |
| 3072 | #endif |
| 3073 | botline_forw(&loff); |
| 3074 | botline_forw(&loff); |
| 3075 | #ifdef FEAT_DIFF |
| 3076 | botline_topline(&loff); |
| 3077 | #endif |
| 3078 | #ifdef FEAT_FOLDING |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 3079 | // We're at the wrong end of a fold now. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3080 | (void)hasFolding(loff.lnum, &loff.lnum, NULL); |
| 3081 | #endif |
| 3082 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 3083 | // Always scroll at least one line. Avoid getting stuck on |
| 3084 | // very long lines. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3085 | if (loff.lnum >= curwin->w_topline |
| 3086 | #ifdef FEAT_DIFF |
| 3087 | && (loff.lnum > curwin->w_topline |
| 3088 | || loff.fill >= curwin->w_topfill) |
| 3089 | #endif |
| 3090 | ) |
| 3091 | { |
| 3092 | #ifdef FEAT_DIFF |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 3093 | // First try using the maximum number of filler lines. If |
| 3094 | // that's not enough, backup one line. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3095 | loff.fill = curwin->w_topfill; |
| 3096 | if (curwin->w_topfill < diff_check_fill(curwin, |
| 3097 | curwin->w_topline)) |
| 3098 | max_topfill(); |
| 3099 | if (curwin->w_topfill == loff.fill) |
| 3100 | #endif |
| 3101 | { |
| 3102 | --curwin->w_topline; |
| 3103 | #ifdef FEAT_DIFF |
| 3104 | curwin->w_topfill = 0; |
| 3105 | #endif |
| 3106 | } |
| 3107 | comp_botline(curwin); |
| 3108 | curwin->w_cursor.lnum = curwin->w_botline - 1; |
Bram Moolenaar | 3d6db14 | 2014-03-28 21:49:32 +0100 | [diff] [blame] | 3109 | curwin->w_valid &= |
| 3110 | ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW|VALID_CROW); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3111 | } |
| 3112 | else |
| 3113 | { |
| 3114 | curwin->w_topline = loff.lnum; |
| 3115 | #ifdef FEAT_DIFF |
| 3116 | curwin->w_topfill = loff.fill; |
| 3117 | check_topfill(curwin, FALSE); |
| 3118 | #endif |
| 3119 | curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); |
| 3120 | } |
| 3121 | } |
| 3122 | } |
| 3123 | } |
| 3124 | #ifdef FEAT_FOLDING |
| 3125 | foldAdjustCursor(); |
| 3126 | #endif |
| 3127 | cursor_correct(); |
Bram Moolenaar | bc54f3f | 2016-09-04 14:34:28 +0200 | [diff] [blame] | 3128 | check_cursor_col(); |
Bram Moolenaar | 7c62692 | 2005-02-07 22:01:03 +0000 | [diff] [blame] | 3129 | if (retval == OK) |
| 3130 | beginline(BL_SOL | BL_FIX); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3131 | curwin->w_valid &= ~(VALID_WCOL|VALID_WROW|VALID_VIRTCOL); |
| 3132 | |
Bram Moolenaar | 907dad7 | 2018-07-10 15:07:15 +0200 | [diff] [blame] | 3133 | if (retval == OK && dir == FORWARD) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3134 | { |
Bram Moolenaar | 907dad7 | 2018-07-10 15:07:15 +0200 | [diff] [blame] | 3135 | // Avoid the screen jumping up and down when 'scrolloff' is non-zero. |
| 3136 | // But make sure we scroll at least one line (happens with mix of long |
| 3137 | // wrapping lines and non-wrapping line). |
| 3138 | if (check_top_offset()) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3139 | { |
Bram Moolenaar | 907dad7 | 2018-07-10 15:07:15 +0200 | [diff] [blame] | 3140 | scroll_cursor_top(1, FALSE); |
| 3141 | if (curwin->w_topline <= old_topline |
| 3142 | && old_topline < curbuf->b_ml.ml_line_count) |
| 3143 | { |
| 3144 | curwin->w_topline = old_topline + 1; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3145 | #ifdef FEAT_FOLDING |
Bram Moolenaar | 907dad7 | 2018-07-10 15:07:15 +0200 | [diff] [blame] | 3146 | (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
| 3147 | #endif |
| 3148 | } |
| 3149 | } |
| 3150 | #ifdef FEAT_FOLDING |
| 3151 | else if (curwin->w_botline > curbuf->b_ml.ml_line_count) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3152 | (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
| 3153 | #endif |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3154 | } |
| 3155 | |
Bram Moolenaar | a4d158b | 2022-08-14 14:17:45 +0100 | [diff] [blame] | 3156 | redraw_later(UPD_VALID); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3157 | return retval; |
| 3158 | } |
| 3159 | |
| 3160 | /* |
| 3161 | * Decide how much overlap to use for page-up or page-down scrolling. |
| 3162 | * This is symmetric, so that doing both keeps the same lines displayed. |
| 3163 | * Three lines are examined: |
| 3164 | * |
| 3165 | * before CTRL-F after CTRL-F / before CTRL-B |
| 3166 | * etc. l1 |
| 3167 | * l1 last but one line ------------ |
| 3168 | * l2 last text line l2 top text line |
| 3169 | * ------------- l3 second text line |
| 3170 | * l3 etc. |
| 3171 | */ |
| 3172 | static void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 3173 | get_scroll_overlap(lineoff_T *lp, int dir) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3174 | { |
| 3175 | int h1, h2, h3, h4; |
| 3176 | int min_height = curwin->w_height - 2; |
| 3177 | lineoff_T loff0, loff1, loff2; |
| 3178 | |
| 3179 | #ifdef FEAT_DIFF |
| 3180 | if (lp->fill > 0) |
| 3181 | lp->height = 1; |
| 3182 | else |
| 3183 | lp->height = plines_nofill(lp->lnum); |
| 3184 | #else |
| 3185 | lp->height = plines(lp->lnum); |
| 3186 | #endif |
| 3187 | h1 = lp->height; |
| 3188 | if (h1 > min_height) |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 3189 | return; // no overlap |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3190 | |
| 3191 | loff0 = *lp; |
| 3192 | if (dir > 0) |
| 3193 | botline_forw(lp); |
| 3194 | else |
| 3195 | topline_back(lp); |
| 3196 | h2 = lp->height; |
Bram Moolenaar | f4f1956 | 2012-11-28 18:22:11 +0100 | [diff] [blame] | 3197 | if (h2 == MAXCOL || h2 + h1 > min_height) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3198 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 3199 | *lp = loff0; // no overlap |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3200 | return; |
| 3201 | } |
| 3202 | |
| 3203 | loff1 = *lp; |
| 3204 | if (dir > 0) |
| 3205 | botline_forw(lp); |
| 3206 | else |
| 3207 | topline_back(lp); |
| 3208 | h3 = lp->height; |
Bram Moolenaar | f4f1956 | 2012-11-28 18:22:11 +0100 | [diff] [blame] | 3209 | if (h3 == MAXCOL || h3 + h2 > min_height) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3210 | { |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 3211 | *lp = loff0; // no overlap |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3212 | return; |
| 3213 | } |
| 3214 | |
| 3215 | loff2 = *lp; |
| 3216 | if (dir > 0) |
| 3217 | botline_forw(lp); |
| 3218 | else |
| 3219 | topline_back(lp); |
| 3220 | h4 = lp->height; |
Bram Moolenaar | f4f1956 | 2012-11-28 18:22:11 +0100 | [diff] [blame] | 3221 | if (h4 == MAXCOL || h4 + h3 + h2 > min_height || h3 + h2 + h1 > min_height) |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 3222 | *lp = loff1; // 1 line overlap |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3223 | else |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 3224 | *lp = loff2; // 2 lines overlap |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3225 | } |
| 3226 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3227 | /* |
| 3228 | * Scroll 'scroll' lines up or down. |
| 3229 | */ |
| 3230 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 3231 | halfpage(int flag, linenr_T Prenum) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3232 | { |
| 3233 | long scrolled = 0; |
| 3234 | int i; |
| 3235 | int n; |
| 3236 | int room; |
| 3237 | |
| 3238 | if (Prenum) |
| 3239 | curwin->w_p_scr = (Prenum > curwin->w_height) ? |
| 3240 | curwin->w_height : Prenum; |
| 3241 | n = (curwin->w_p_scr <= curwin->w_height) ? |
| 3242 | curwin->w_p_scr : curwin->w_height; |
| 3243 | |
Bram Moolenaar | d5d3753 | 2017-03-27 23:02:07 +0200 | [diff] [blame] | 3244 | update_topline(); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3245 | validate_botline(); |
| 3246 | room = curwin->w_empty_rows; |
| 3247 | #ifdef FEAT_DIFF |
| 3248 | room += curwin->w_filler_rows; |
| 3249 | #endif |
| 3250 | if (flag) |
| 3251 | { |
| 3252 | /* |
| 3253 | * scroll the text up |
| 3254 | */ |
| 3255 | while (n > 0 && curwin->w_botline <= curbuf->b_ml.ml_line_count) |
| 3256 | { |
| 3257 | #ifdef FEAT_DIFF |
| 3258 | if (curwin->w_topfill > 0) |
| 3259 | { |
| 3260 | i = 1; |
Bram Moolenaar | 8455c5e | 2020-07-14 21:22:30 +0200 | [diff] [blame] | 3261 | --n; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3262 | --curwin->w_topfill; |
| 3263 | } |
| 3264 | else |
| 3265 | #endif |
| 3266 | { |
Bram Moolenaar | 43335ea | 2015-09-09 20:59:37 +0200 | [diff] [blame] | 3267 | i = PLINES_NOFILL(curwin->w_topline); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3268 | n -= i; |
| 3269 | if (n < 0 && scrolled > 0) |
| 3270 | break; |
| 3271 | #ifdef FEAT_FOLDING |
| 3272 | (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); |
| 3273 | #endif |
| 3274 | ++curwin->w_topline; |
| 3275 | #ifdef FEAT_DIFF |
| 3276 | curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); |
| 3277 | #endif |
| 3278 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3279 | if (curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) |
| 3280 | { |
| 3281 | ++curwin->w_cursor.lnum; |
| 3282 | curwin->w_valid &= |
| 3283 | ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); |
| 3284 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3285 | } |
| 3286 | curwin->w_valid &= ~(VALID_CROW|VALID_WROW); |
| 3287 | scrolled += i; |
| 3288 | |
| 3289 | /* |
| 3290 | * Correct w_botline for changed w_topline. |
| 3291 | * Won't work when there are filler lines. |
| 3292 | */ |
| 3293 | #ifdef FEAT_DIFF |
| 3294 | if (curwin->w_p_diff) |
| 3295 | curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); |
| 3296 | else |
| 3297 | #endif |
| 3298 | { |
| 3299 | room += i; |
| 3300 | do |
| 3301 | { |
| 3302 | i = plines(curwin->w_botline); |
| 3303 | if (i > room) |
| 3304 | break; |
| 3305 | #ifdef FEAT_FOLDING |
| 3306 | (void)hasFolding(curwin->w_botline, NULL, |
| 3307 | &curwin->w_botline); |
| 3308 | #endif |
| 3309 | ++curwin->w_botline; |
| 3310 | room -= i; |
| 3311 | } while (curwin->w_botline <= curbuf->b_ml.ml_line_count); |
| 3312 | } |
| 3313 | } |
| 3314 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3315 | /* |
| 3316 | * When hit bottom of the file: move cursor down. |
| 3317 | */ |
| 3318 | if (n > 0) |
| 3319 | { |
| 3320 | # ifdef FEAT_FOLDING |
| 3321 | if (hasAnyFolding(curwin)) |
| 3322 | { |
| 3323 | while (--n >= 0 |
| 3324 | && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) |
| 3325 | { |
| 3326 | (void)hasFolding(curwin->w_cursor.lnum, NULL, |
| 3327 | &curwin->w_cursor.lnum); |
| 3328 | ++curwin->w_cursor.lnum; |
| 3329 | } |
| 3330 | } |
| 3331 | else |
| 3332 | # endif |
| 3333 | curwin->w_cursor.lnum += n; |
| 3334 | check_cursor_lnum(); |
| 3335 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3336 | } |
| 3337 | else |
| 3338 | { |
| 3339 | /* |
| 3340 | * scroll the text down |
| 3341 | */ |
| 3342 | while (n > 0 && curwin->w_topline > 1) |
| 3343 | { |
| 3344 | #ifdef FEAT_DIFF |
| 3345 | if (curwin->w_topfill < diff_check_fill(curwin, curwin->w_topline)) |
| 3346 | { |
| 3347 | i = 1; |
Bram Moolenaar | d00e024 | 2019-03-20 21:42:20 +0100 | [diff] [blame] | 3348 | --n; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3349 | ++curwin->w_topfill; |
| 3350 | } |
| 3351 | else |
| 3352 | #endif |
| 3353 | { |
Bram Moolenaar | 43335ea | 2015-09-09 20:59:37 +0200 | [diff] [blame] | 3354 | i = PLINES_NOFILL(curwin->w_topline - 1); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3355 | n -= i; |
| 3356 | if (n < 0 && scrolled > 0) |
| 3357 | break; |
| 3358 | --curwin->w_topline; |
| 3359 | #ifdef FEAT_FOLDING |
| 3360 | (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
| 3361 | #endif |
| 3362 | #ifdef FEAT_DIFF |
| 3363 | curwin->w_topfill = 0; |
| 3364 | #endif |
| 3365 | } |
| 3366 | curwin->w_valid &= ~(VALID_CROW|VALID_WROW| |
| 3367 | VALID_BOTLINE|VALID_BOTLINE_AP); |
| 3368 | scrolled += i; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3369 | if (curwin->w_cursor.lnum > 1) |
| 3370 | { |
| 3371 | --curwin->w_cursor.lnum; |
| 3372 | curwin->w_valid &= ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); |
| 3373 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3374 | } |
Bram Moolenaar | d00e024 | 2019-03-20 21:42:20 +0100 | [diff] [blame] | 3375 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3376 | /* |
| 3377 | * When hit top of the file: move cursor up. |
| 3378 | */ |
| 3379 | if (n > 0) |
| 3380 | { |
| 3381 | if (curwin->w_cursor.lnum <= (linenr_T)n) |
| 3382 | curwin->w_cursor.lnum = 1; |
| 3383 | else |
| 3384 | # ifdef FEAT_FOLDING |
| 3385 | if (hasAnyFolding(curwin)) |
| 3386 | { |
| 3387 | while (--n >= 0 && curwin->w_cursor.lnum > 1) |
| 3388 | { |
| 3389 | --curwin->w_cursor.lnum; |
| 3390 | (void)hasFolding(curwin->w_cursor.lnum, |
| 3391 | &curwin->w_cursor.lnum, NULL); |
| 3392 | } |
| 3393 | } |
| 3394 | else |
| 3395 | # endif |
| 3396 | curwin->w_cursor.lnum -= n; |
| 3397 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3398 | } |
| 3399 | # ifdef FEAT_FOLDING |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 3400 | // Move cursor to first line of closed fold. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3401 | foldAdjustCursor(); |
| 3402 | # endif |
| 3403 | #ifdef FEAT_DIFF |
| 3404 | check_topfill(curwin, !flag); |
| 3405 | #endif |
| 3406 | cursor_correct(); |
| 3407 | beginline(BL_SOL | BL_FIX); |
Bram Moolenaar | a4d158b | 2022-08-14 14:17:45 +0100 | [diff] [blame] | 3408 | redraw_later(UPD_VALID); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3409 | } |
Bram Moolenaar | 860cae1 | 2010-06-05 23:22:07 +0200 | [diff] [blame] | 3410 | |
Bram Moolenaar | 860cae1 | 2010-06-05 23:22:07 +0200 | [diff] [blame] | 3411 | void |
Bram Moolenaar | 9b57814 | 2016-01-30 19:39:49 +0100 | [diff] [blame] | 3412 | do_check_cursorbind(void) |
Bram Moolenaar | 860cae1 | 2010-06-05 23:22:07 +0200 | [diff] [blame] | 3413 | { |
| 3414 | linenr_T line = curwin->w_cursor.lnum; |
Bram Moolenaar | 1ea69b7 | 2012-03-16 19:24:26 +0100 | [diff] [blame] | 3415 | colnr_T col = curwin->w_cursor.col; |
Bram Moolenaar | 1ea69b7 | 2012-03-16 19:24:26 +0100 | [diff] [blame] | 3416 | colnr_T coladd = curwin->w_cursor.coladd; |
Bram Moolenaar | 524780d | 2012-03-28 14:19:50 +0200 | [diff] [blame] | 3417 | colnr_T curswant = curwin->w_curswant; |
| 3418 | int set_curswant = curwin->w_set_curswant; |
Bram Moolenaar | 860cae1 | 2010-06-05 23:22:07 +0200 | [diff] [blame] | 3419 | win_T *old_curwin = curwin; |
| 3420 | buf_T *old_curbuf = curbuf; |
Bram Moolenaar | 6145285 | 2011-02-01 18:01:11 +0100 | [diff] [blame] | 3421 | int restart_edit_save; |
Bram Moolenaar | 860cae1 | 2010-06-05 23:22:07 +0200 | [diff] [blame] | 3422 | int old_VIsual_select = VIsual_select; |
| 3423 | int old_VIsual_active = VIsual_active; |
Bram Moolenaar | 860cae1 | 2010-06-05 23:22:07 +0200 | [diff] [blame] | 3424 | |
| 3425 | /* |
| 3426 | * loop through the cursorbound windows |
| 3427 | */ |
Bram Moolenaar | 860cae1 | 2010-06-05 23:22:07 +0200 | [diff] [blame] | 3428 | VIsual_select = VIsual_active = 0; |
Bram Moolenaar | 2932359 | 2016-07-24 22:04:11 +0200 | [diff] [blame] | 3429 | FOR_ALL_WINDOWS(curwin) |
Bram Moolenaar | 860cae1 | 2010-06-05 23:22:07 +0200 | [diff] [blame] | 3430 | { |
| 3431 | curbuf = curwin->w_buffer; |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 3432 | // skip original window and windows with 'noscrollbind' |
Bram Moolenaar | 860cae1 | 2010-06-05 23:22:07 +0200 | [diff] [blame] | 3433 | if (curwin != old_curwin && curwin->w_p_crb) |
| 3434 | { |
| 3435 | # ifdef FEAT_DIFF |
| 3436 | if (curwin->w_p_diff) |
Bram Moolenaar | 025e3e0 | 2016-10-18 14:50:18 +0200 | [diff] [blame] | 3437 | curwin->w_cursor.lnum = |
| 3438 | diff_get_corresponding_line(old_curbuf, line); |
Bram Moolenaar | 860cae1 | 2010-06-05 23:22:07 +0200 | [diff] [blame] | 3439 | else |
| 3440 | # endif |
| 3441 | curwin->w_cursor.lnum = line; |
| 3442 | curwin->w_cursor.col = col; |
Bram Moolenaar | 1ea69b7 | 2012-03-16 19:24:26 +0100 | [diff] [blame] | 3443 | curwin->w_cursor.coladd = coladd; |
Bram Moolenaar | 524780d | 2012-03-28 14:19:50 +0200 | [diff] [blame] | 3444 | curwin->w_curswant = curswant; |
| 3445 | curwin->w_set_curswant = set_curswant; |
Bram Moolenaar | 860cae1 | 2010-06-05 23:22:07 +0200 | [diff] [blame] | 3446 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 3447 | // Make sure the cursor is in a valid position. Temporarily set |
| 3448 | // "restart_edit" to allow the cursor to be beyond the EOL. |
Bram Moolenaar | 6145285 | 2011-02-01 18:01:11 +0100 | [diff] [blame] | 3449 | restart_edit_save = restart_edit; |
| 3450 | restart_edit = TRUE; |
Bram Moolenaar | 860cae1 | 2010-06-05 23:22:07 +0200 | [diff] [blame] | 3451 | check_cursor(); |
Bram Moolenaar | a315ce1 | 2022-06-24 12:38:57 +0100 | [diff] [blame] | 3452 | |
| 3453 | // Avoid a scroll here for the cursor position, 'scrollbind' is |
| 3454 | // more important. |
| 3455 | if (!curwin->w_p_scb) |
| 3456 | validate_cursor(); |
| 3457 | |
Bram Moolenaar | 6145285 | 2011-02-01 18:01:11 +0100 | [diff] [blame] | 3458 | restart_edit = restart_edit_save; |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 3459 | // Correct cursor for multi-byte character. |
Bram Moolenaar | 860cae1 | 2010-06-05 23:22:07 +0200 | [diff] [blame] | 3460 | if (has_mbyte) |
| 3461 | mb_adjust_cursor(); |
Bram Moolenaar | a4d158b | 2022-08-14 14:17:45 +0100 | [diff] [blame] | 3462 | redraw_later(UPD_VALID); |
Bram Moolenaar | f3d419d | 2011-01-22 21:05:07 +0100 | [diff] [blame] | 3463 | |
Bram Moolenaar | 85a2002 | 2019-12-21 18:25:54 +0100 | [diff] [blame] | 3464 | // Only scroll when 'scrollbind' hasn't done this. |
Bram Moolenaar | f3d419d | 2011-01-22 21:05:07 +0100 | [diff] [blame] | 3465 | if (!curwin->w_p_scb) |
| 3466 | update_topline(); |
Bram Moolenaar | 860cae1 | 2010-06-05 23:22:07 +0200 | [diff] [blame] | 3467 | curwin->w_redr_status = TRUE; |
Bram Moolenaar | 860cae1 | 2010-06-05 23:22:07 +0200 | [diff] [blame] | 3468 | } |
| 3469 | } |
| 3470 | |
| 3471 | /* |
| 3472 | * reset current-window |
| 3473 | */ |
Bram Moolenaar | 860cae1 | 2010-06-05 23:22:07 +0200 | [diff] [blame] | 3474 | VIsual_select = old_VIsual_select; |
| 3475 | VIsual_active = old_VIsual_active; |
Bram Moolenaar | 860cae1 | 2010-06-05 23:22:07 +0200 | [diff] [blame] | 3476 | curwin = old_curwin; |
| 3477 | curbuf = old_curbuf; |
| 3478 | } |