Mercurial > vim
annotate src/move.c @ 20566:37ba6d4a9455
Added tag v8.2.0836 for changeset 5788b78a1af0e2e57108c66a1ef595ecc9a63c09
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Thu, 28 May 2020 21:45:04 +0200 |
| parents | 9e428147e4ee |
| children | 0abcf69badda |
| rev | line source |
|---|---|
|
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1 /* vi:set ts=8 sts=4 sw=4 noet: |
| 7 | 2 * |
| 3 * VIM - Vi IMproved by Bram Moolenaar | |
| 4 * | |
| 5 * Do ":help uganda" in Vim to read copying and usage conditions. | |
| 6 * Do ":help credits" in Vim to see a list of people who contributed. | |
| 7 * See README.txt for an overview of the Vim source code. | |
| 8 */ | |
| 9 /* | |
| 10 * move.c: Functions for moving the cursor and scrolling text. | |
| 11 * | |
| 12 * There are two ways to move the cursor: | |
| 13 * 1. Move the cursor directly, the text is scrolled to keep the cursor in the | |
| 14 * window. | |
| 15 * 2. Scroll the text, the cursor is moved into the text visible in the | |
| 16 * window. | |
| 17 * The 'scrolloff' option makes this a bit complicated. | |
| 18 */ | |
| 19 | |
| 20 #include "vim.h" | |
| 21 | |
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22 static int scrolljump_value(void); |
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23 static int check_top_offset(void); |
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24 static void curs_rows(win_T *wp); |
| 7 | 25 |
| 26 typedef struct | |
| 27 { | |
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28 linenr_T lnum; // line number |
| 7 | 29 #ifdef FEAT_DIFF |
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30 int fill; // filler lines |
| 7 | 31 #endif |
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32 int height; // height of added line |
| 7 | 33 } lineoff_T; |
| 34 | |
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35 static void topline_back(lineoff_T *lp); |
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36 static void botline_forw(lineoff_T *lp); |
| 7 | 37 |
| 38 /* | |
| 39 * Compute wp->w_botline for the current wp->w_topline. Can be called after | |
| 40 * wp->w_topline changed. | |
| 41 */ | |
| 42 static void | |
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43 comp_botline(win_T *wp) |
| 7 | 44 { |
| 45 int n; | |
| 46 linenr_T lnum; | |
| 47 int done; | |
| 48 #ifdef FEAT_FOLDING | |
| 49 linenr_T last; | |
| 50 int folded; | |
| 51 #endif | |
| 52 | |
| 53 /* | |
| 54 * If w_cline_row is valid, start there. | |
| 55 * Otherwise have to start at w_topline. | |
| 56 */ | |
| 57 check_cursor_moved(wp); | |
| 58 if (wp->w_valid & VALID_CROW) | |
| 59 { | |
| 60 lnum = wp->w_cursor.lnum; | |
| 61 done = wp->w_cline_row; | |
| 62 } | |
| 63 else | |
| 64 { | |
| 65 lnum = wp->w_topline; | |
| 66 done = 0; | |
| 67 } | |
| 68 | |
| 69 for ( ; lnum <= wp->w_buffer->b_ml.ml_line_count; ++lnum) | |
| 70 { | |
| 71 #ifdef FEAT_FOLDING | |
| 72 last = lnum; | |
| 73 folded = FALSE; | |
| 74 if (hasFoldingWin(wp, lnum, NULL, &last, TRUE, NULL)) | |
| 75 { | |
| 76 n = 1; | |
| 77 folded = TRUE; | |
| 78 } | |
| 79 else | |
| 80 #endif | |
| 81 #ifdef FEAT_DIFF | |
| 82 if (lnum == wp->w_topline) | |
| 83 n = plines_win_nofill(wp, lnum, TRUE) + wp->w_topfill; | |
| 84 else | |
| 85 #endif | |
| 86 n = plines_win(wp, lnum, TRUE); | |
| 87 if ( | |
| 88 #ifdef FEAT_FOLDING | |
| 89 lnum <= wp->w_cursor.lnum && last >= wp->w_cursor.lnum | |
| 90 #else | |
| 91 lnum == wp->w_cursor.lnum | |
| 92 #endif | |
| 93 ) | |
| 94 { | |
| 95 wp->w_cline_row = done; | |
| 96 wp->w_cline_height = n; | |
| 97 #ifdef FEAT_FOLDING | |
| 98 wp->w_cline_folded = folded; | |
| 99 #endif | |
| 5764 | 100 redraw_for_cursorline(wp); |
| 7 | 101 wp->w_valid |= (VALID_CROW|VALID_CHEIGHT); |
| 102 } | |
| 103 if (done + n > wp->w_height) | |
| 104 break; | |
| 105 done += n; | |
| 106 #ifdef FEAT_FOLDING | |
| 107 lnum = last; | |
| 108 #endif | |
| 109 } | |
| 110 | |
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111 // wp->w_botline is the line that is just below the window |
| 7 | 112 wp->w_botline = lnum; |
| 113 wp->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 114 | |
| 115 set_empty_rows(wp, done); | |
| 116 } | |
| 117 | |
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118 #ifdef FEAT_SYN_HL |
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119 void |
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120 reset_cursorline(void) |
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121 { |
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122 curwin->w_last_cursorline = 0; |
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123 } |
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124 #endif |
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125 |
| 7 | 126 /* |
| 5764 | 127 * Redraw when w_cline_row changes and 'relativenumber' or 'cursorline' is |
| 128 * set. | |
| 129 */ | |
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130 void |
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131 redraw_for_cursorline(win_T *wp) |
| 5764 | 132 { |
| 133 if ((wp->w_p_rnu | |
| 134 #ifdef FEAT_SYN_HL | |
| 135 || wp->w_p_cul | |
| 136 #endif | |
| 137 ) | |
| 138 && (wp->w_valid & VALID_CROW) == 0 | |
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139 && !pum_visible()) |
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140 { |
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141 if (wp->w_p_rnu) |
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142 // win_line() will redraw the number column only. |
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143 redraw_win_later(wp, VALID); |
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144 #ifdef FEAT_SYN_HL |
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145 if (wp->w_p_cul) |
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146 { |
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147 if (wp->w_redr_type <= VALID && wp->w_last_cursorline != 0) |
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148 { |
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149 // "w_last_cursorline" may be outdated, worst case we redraw |
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150 // too much. This is optimized for moving the cursor around in |
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151 // the current window. |
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152 redrawWinline(wp, wp->w_last_cursorline); |
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153 redrawWinline(wp, wp->w_cursor.lnum); |
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154 } |
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155 else |
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156 redraw_win_later(wp, SOME_VALID); |
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157 } |
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158 #endif |
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159 } |
| 5764 | 160 } |
| 161 | |
| 162 /* | |
| 7 | 163 * Update curwin->w_topline and redraw if necessary. |
| 164 * Used to update the screen before printing a message. | |
| 165 */ | |
| 166 void | |
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167 update_topline_redraw(void) |
| 7 | 168 { |
| 169 update_topline(); | |
| 170 if (must_redraw) | |
| 171 update_screen(0); | |
| 172 } | |
| 173 | |
| 174 /* | |
| 175 * Update curwin->w_topline to move the cursor onto the screen. | |
| 176 */ | |
| 177 void | |
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178 update_topline(void) |
| 7 | 179 { |
| 180 long line_count; | |
| 181 int halfheight; | |
| 182 int n; | |
| 183 linenr_T old_topline; | |
| 184 #ifdef FEAT_DIFF | |
| 185 int old_topfill; | |
| 186 #endif | |
| 187 #ifdef FEAT_FOLDING | |
| 188 linenr_T lnum; | |
| 189 #endif | |
| 190 int check_topline = FALSE; | |
| 191 int check_botline = FALSE; | |
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192 long *so_ptr = curwin->w_p_so >= 0 ? &curwin->w_p_so : &p_so; |
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193 int save_so = *so_ptr; |
| 7 | 194 |
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195 // If there is no valid screen and when the window height is zero just use |
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196 // the cursor line. |
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197 if (!screen_valid(TRUE) || curwin->w_height == 0) |
| 6247 | 198 { |
| 199 curwin->w_topline = curwin->w_cursor.lnum; | |
| 200 curwin->w_botline = curwin->w_topline; | |
| 201 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 202 curwin->w_scbind_pos = 1; | |
| 203 return; | |
| 204 } | |
| 205 | |
| 7 | 206 check_cursor_moved(curwin); |
| 207 if (curwin->w_valid & VALID_TOPLINE) | |
| 208 return; | |
| 209 | |
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210 // When dragging with the mouse, don't scroll that quickly |
| 1121 | 211 if (mouse_dragging > 0) |
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212 *so_ptr = mouse_dragging - 1; |
| 7 | 213 |
| 214 old_topline = curwin->w_topline; | |
| 215 #ifdef FEAT_DIFF | |
| 216 old_topfill = curwin->w_topfill; | |
| 217 #endif | |
| 218 | |
| 219 /* | |
| 220 * If the buffer is empty, always set topline to 1. | |
| 221 */ | |
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222 if (BUFEMPTY()) // special case - file is empty |
| 7 | 223 { |
| 224 if (curwin->w_topline != 1) | |
| 225 redraw_later(NOT_VALID); | |
| 226 curwin->w_topline = 1; | |
| 227 curwin->w_botline = 2; | |
| 228 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 229 curwin->w_scbind_pos = 1; | |
| 230 } | |
| 231 | |
| 232 /* | |
| 233 * If the cursor is above or near the top of the window, scroll the window | |
| 234 * to show the line the cursor is in, with 'scrolloff' context. | |
| 235 */ | |
| 236 else | |
| 237 { | |
| 238 if (curwin->w_topline > 1) | |
| 239 { | |
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240 // If the cursor is above topline, scrolling is always needed. |
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241 // If the cursor is far below topline and there is no folding, |
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242 // scrolling down is never needed. |
| 7 | 243 if (curwin->w_cursor.lnum < curwin->w_topline) |
| 244 check_topline = TRUE; | |
| 245 else if (check_top_offset()) | |
| 246 check_topline = TRUE; | |
| 247 } | |
| 248 #ifdef FEAT_DIFF | |
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249 // Check if there are more filler lines than allowed. |
| 7 | 250 if (!check_topline && curwin->w_topfill > diff_check_fill(curwin, |
| 251 curwin->w_topline)) | |
| 252 check_topline = TRUE; | |
| 253 #endif | |
| 254 | |
| 255 if (check_topline) | |
| 256 { | |
| 257 halfheight = curwin->w_height / 2 - 1; | |
| 258 if (halfheight < 2) | |
| 259 halfheight = 2; | |
| 260 | |
| 261 #ifdef FEAT_FOLDING | |
| 262 if (hasAnyFolding(curwin)) | |
| 263 { | |
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264 // Count the number of logical lines between the cursor and |
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265 // topline + scrolloff (approximation of how much will be |
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266 // scrolled). |
| 7 | 267 n = 0; |
| 268 for (lnum = curwin->w_cursor.lnum; | |
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269 lnum < curwin->w_topline + *so_ptr; ++lnum) |
| 7 | 270 { |
| 271 ++n; | |
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272 // stop at end of file or when we know we are far off |
| 7 | 273 if (lnum >= curbuf->b_ml.ml_line_count || n >= halfheight) |
| 274 break; | |
| 275 (void)hasFolding(lnum, NULL, &lnum); | |
| 276 } | |
| 277 } | |
| 278 else | |
| 279 #endif | |
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280 n = curwin->w_topline + *so_ptr - curwin->w_cursor.lnum; |
| 7 | 281 |
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282 // If we weren't very close to begin with, we scroll to put the |
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283 // cursor in the middle of the window. Otherwise put the cursor |
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284 // near the top of the window. |
| 7 | 285 if (n >= halfheight) |
| 286 scroll_cursor_halfway(FALSE); | |
| 287 else | |
| 288 { | |
| 532 | 289 scroll_cursor_top(scrolljump_value(), FALSE); |
| 7 | 290 check_botline = TRUE; |
| 291 } | |
| 292 } | |
| 293 | |
| 294 else | |
| 295 { | |
| 296 #ifdef FEAT_FOLDING | |
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297 // Make sure topline is the first line of a fold. |
| 7 | 298 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
| 299 #endif | |
| 300 check_botline = TRUE; | |
| 301 } | |
| 302 } | |
| 303 | |
| 304 /* | |
| 305 * If the cursor is below the bottom of the window, scroll the window | |
| 306 * to put the cursor on the window. | |
| 307 * When w_botline is invalid, recompute it first, to avoid a redraw later. | |
| 308 * If w_botline was approximated, we might need a redraw later in a few | |
| 309 * cases, but we don't want to spend (a lot of) time recomputing w_botline | |
| 310 * for every small change. | |
| 311 */ | |
| 312 if (check_botline) | |
| 313 { | |
| 314 if (!(curwin->w_valid & VALID_BOTLINE_AP)) | |
| 315 validate_botline(); | |
| 316 | |
| 317 if (curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 318 { | |
| 1744 | 319 if (curwin->w_cursor.lnum < curwin->w_botline) |
| 320 { | |
| 321 if (((long)curwin->w_cursor.lnum | |
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322 >= (long)curwin->w_botline - *so_ptr |
| 7 | 323 #ifdef FEAT_FOLDING |
| 324 || hasAnyFolding(curwin) | |
| 325 #endif | |
| 326 )) | |
| 1744 | 327 { |
| 7 | 328 lineoff_T loff; |
| 329 | |
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330 // Cursor is (a few lines) above botline, check if there are |
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331 // 'scrolloff' window lines below the cursor. If not, need to |
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332 // scroll. |
| 7 | 333 n = curwin->w_empty_rows; |
| 334 loff.lnum = curwin->w_cursor.lnum; | |
| 335 #ifdef FEAT_FOLDING | |
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336 // In a fold go to its last line. |
| 7 | 337 (void)hasFolding(loff.lnum, NULL, &loff.lnum); |
| 338 #endif | |
| 339 #ifdef FEAT_DIFF | |
| 340 loff.fill = 0; | |
| 341 n += curwin->w_filler_rows; | |
| 342 #endif | |
| 343 loff.height = 0; | |
| 344 while (loff.lnum < curwin->w_botline | |
| 345 #ifdef FEAT_DIFF | |
| 346 && (loff.lnum + 1 < curwin->w_botline || loff.fill == 0) | |
| 347 #endif | |
| 348 ) | |
| 349 { | |
| 350 n += loff.height; | |
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351 if (n >= *so_ptr) |
| 7 | 352 break; |
| 353 botline_forw(&loff); | |
| 354 } | |
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355 if (n >= *so_ptr) |
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356 // sufficient context, no need to scroll |
| 7 | 357 check_botline = FALSE; |
| 1744 | 358 } |
| 359 else | |
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360 // sufficient context, no need to scroll |
| 1744 | 361 check_botline = FALSE; |
| 7 | 362 } |
| 363 if (check_botline) | |
| 364 { | |
| 365 #ifdef FEAT_FOLDING | |
| 366 if (hasAnyFolding(curwin)) | |
| 367 { | |
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368 // Count the number of logical lines between the cursor and |
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369 // botline - scrolloff (approximation of how much will be |
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370 // scrolled). |
| 7 | 371 line_count = 0; |
| 372 for (lnum = curwin->w_cursor.lnum; | |
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373 lnum >= curwin->w_botline - *so_ptr; --lnum) |
| 7 | 374 { |
| 375 ++line_count; | |
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376 // stop at end of file or when we know we are far off |
| 7 | 377 if (lnum <= 0 || line_count > curwin->w_height + 1) |
| 378 break; | |
| 379 (void)hasFolding(lnum, &lnum, NULL); | |
| 380 } | |
| 381 } | |
| 382 else | |
| 383 #endif | |
| 384 line_count = curwin->w_cursor.lnum - curwin->w_botline | |
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385 + 1 + *so_ptr; |
| 7 | 386 if (line_count <= curwin->w_height + 1) |
| 532 | 387 scroll_cursor_bot(scrolljump_value(), FALSE); |
| 7 | 388 else |
| 389 scroll_cursor_halfway(FALSE); | |
| 390 } | |
| 391 } | |
| 392 } | |
| 393 curwin->w_valid |= VALID_TOPLINE; | |
| 394 | |
| 395 /* | |
| 396 * Need to redraw when topline changed. | |
| 397 */ | |
| 398 if (curwin->w_topline != old_topline | |
| 399 #ifdef FEAT_DIFF | |
| 400 || curwin->w_topfill != old_topfill | |
| 401 #endif | |
| 402 ) | |
| 403 { | |
| 3318 | 404 dollar_vcol = -1; |
| 740 | 405 if (curwin->w_skipcol != 0) |
| 7 | 406 { |
| 407 curwin->w_skipcol = 0; | |
| 408 redraw_later(NOT_VALID); | |
| 409 } | |
| 410 else | |
| 411 redraw_later(VALID); | |
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412 // May need to set w_skipcol when cursor in w_topline. |
| 7 | 413 if (curwin->w_cursor.lnum == curwin->w_topline) |
| 414 validate_cursor(); | |
| 415 } | |
| 416 | |
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417 *so_ptr = save_so; |
| 7 | 418 } |
| 419 | |
| 420 /* | |
| 532 | 421 * Return the scrolljump value to use for the current window. |
| 422 * When 'scrolljump' is positive use it as-is. | |
| 423 * When 'scrolljump' is negative use it as a percentage of the window height. | |
| 424 */ | |
| 425 static int | |
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426 scrolljump_value(void) |
| 532 | 427 { |
| 428 if (p_sj >= 0) | |
| 429 return (int)p_sj; | |
| 430 return (curwin->w_height * -p_sj) / 100; | |
| 431 } | |
| 432 | |
| 433 /* | |
| 7 | 434 * Return TRUE when there are not 'scrolloff' lines above the cursor for the |
| 435 * current window. | |
| 436 */ | |
| 437 static int | |
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438 check_top_offset(void) |
| 7 | 439 { |
| 440 lineoff_T loff; | |
| 441 int n; | |
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442 long so = get_scrolloff_value(); |
| 7 | 443 |
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444 if (curwin->w_cursor.lnum < curwin->w_topline + so |
| 7 | 445 #ifdef FEAT_FOLDING |
| 446 || hasAnyFolding(curwin) | |
| 447 #endif | |
| 448 ) | |
| 449 { | |
| 450 loff.lnum = curwin->w_cursor.lnum; | |
| 451 #ifdef FEAT_DIFF | |
| 452 loff.fill = 0; | |
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453 n = curwin->w_topfill; // always have this context |
| 7 | 454 #else |
| 455 n = 0; | |
| 456 #endif | |
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457 // Count the visible screen lines above the cursor line. |
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458 while (n < so) |
| 7 | 459 { |
| 460 topline_back(&loff); | |
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461 // Stop when included a line above the window. |
| 7 | 462 if (loff.lnum < curwin->w_topline |
| 463 #ifdef FEAT_DIFF | |
| 464 || (loff.lnum == curwin->w_topline && loff.fill > 0) | |
| 465 #endif | |
| 466 ) | |
| 467 break; | |
| 468 n += loff.height; | |
| 469 } | |
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470 if (n < so) |
| 7 | 471 return TRUE; |
| 472 } | |
| 473 return FALSE; | |
| 474 } | |
| 475 | |
| 476 void | |
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477 update_curswant(void) |
| 7 | 478 { |
| 479 if (curwin->w_set_curswant) | |
| 480 { | |
| 481 validate_virtcol(); | |
| 482 curwin->w_curswant = curwin->w_virtcol; | |
| 483 curwin->w_set_curswant = FALSE; | |
| 484 } | |
| 485 } | |
| 486 | |
| 487 /* | |
| 488 * Check if the cursor has moved. Set the w_valid flag accordingly. | |
| 489 */ | |
| 490 void | |
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491 check_cursor_moved(win_T *wp) |
| 7 | 492 { |
| 493 if (wp->w_cursor.lnum != wp->w_valid_cursor.lnum) | |
| 494 { | |
| 495 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 496 |VALID_CHEIGHT|VALID_CROW|VALID_TOPLINE); | |
| 497 wp->w_valid_cursor = wp->w_cursor; | |
| 498 wp->w_valid_leftcol = wp->w_leftcol; | |
| 499 } | |
| 500 else if (wp->w_cursor.col != wp->w_valid_cursor.col | |
| 501 || wp->w_leftcol != wp->w_valid_leftcol | |
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502 || wp->w_cursor.coladd != wp->w_valid_cursor.coladd) |
| 7 | 503 { |
| 504 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL); | |
| 505 wp->w_valid_cursor.col = wp->w_cursor.col; | |
| 506 wp->w_valid_leftcol = wp->w_leftcol; | |
| 507 wp->w_valid_cursor.coladd = wp->w_cursor.coladd; | |
| 508 } | |
| 509 } | |
| 510 | |
| 511 /* | |
| 512 * Call this function when some window settings have changed, which require | |
| 513 * the cursor position, botline and topline to be recomputed and the window to | |
| 514 * be redrawn. E.g, when changing the 'wrap' option or folding. | |
| 515 */ | |
| 516 void | |
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517 changed_window_setting(void) |
| 7 | 518 { |
| 519 changed_window_setting_win(curwin); | |
| 520 } | |
| 521 | |
| 522 void | |
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523 changed_window_setting_win(win_T *wp) |
| 7 | 524 { |
| 525 wp->w_lines_valid = 0; | |
| 526 changed_line_abv_curs_win(wp); | |
| 527 wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP|VALID_TOPLINE); | |
| 528 redraw_win_later(wp, NOT_VALID); | |
| 529 } | |
| 530 | |
| 531 /* | |
| 532 * Set wp->w_topline to a certain number. | |
| 533 */ | |
| 534 void | |
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535 set_topline(win_T *wp, linenr_T lnum) |
| 7 | 536 { |
| 537 #ifdef FEAT_FOLDING | |
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538 // go to first of folded lines |
| 7 | 539 (void)hasFoldingWin(wp, lnum, &lnum, NULL, TRUE, NULL); |
| 540 #endif | |
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541 // Approximate the value of w_botline |
| 7 | 542 wp->w_botline += lnum - wp->w_topline; |
| 543 wp->w_topline = lnum; | |
| 1744 | 544 wp->w_topline_was_set = TRUE; |
| 7 | 545 #ifdef FEAT_DIFF |
| 546 wp->w_topfill = 0; | |
| 547 #endif | |
| 548 wp->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_TOPLINE); | |
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549 // Don't set VALID_TOPLINE here, 'scrolloff' needs to be checked. |
| 7 | 550 redraw_later(VALID); |
| 551 } | |
| 552 | |
| 553 /* | |
| 554 * Call this function when the length of the cursor line (in screen | |
| 555 * characters) has changed, and the change is before the cursor. | |
| 556 * Need to take care of w_botline separately! | |
| 557 */ | |
| 558 void | |
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559 changed_cline_bef_curs(void) |
| 7 | 560 { |
| 561 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 562 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 563 } | |
| 564 | |
| 565 void | |
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566 changed_cline_bef_curs_win(win_T *wp) |
| 7 | 567 { |
| 568 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL | |
| 569 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 570 } | |
| 571 | |
| 572 /* | |
| 573 * Call this function when the length of a line (in screen characters) above | |
| 574 * the cursor have changed. | |
| 575 * Need to take care of w_botline separately! | |
| 576 */ | |
| 577 void | |
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578 changed_line_abv_curs(void) |
| 7 | 579 { |
| 580 curwin->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
| 581 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 582 } | |
| 583 | |
| 584 void | |
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585 changed_line_abv_curs_win(win_T *wp) |
| 7 | 586 { |
| 587 wp->w_valid &= ~(VALID_WROW|VALID_WCOL|VALID_VIRTCOL|VALID_CROW | |
| 588 |VALID_CHEIGHT|VALID_TOPLINE); | |
| 589 } | |
| 590 | |
| 591 /* | |
| 592 * Make sure the value of curwin->w_botline is valid. | |
| 593 */ | |
| 594 void | |
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595 validate_botline(void) |
| 7 | 596 { |
| 597 if (!(curwin->w_valid & VALID_BOTLINE)) | |
| 598 comp_botline(curwin); | |
| 599 } | |
| 600 | |
| 601 /* | |
| 602 * Mark curwin->w_botline as invalid (because of some change in the buffer). | |
| 603 */ | |
| 604 void | |
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605 invalidate_botline(void) |
| 7 | 606 { |
| 607 curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 608 } | |
| 609 | |
| 610 void | |
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611 invalidate_botline_win(win_T *wp) |
| 7 | 612 { |
| 613 wp->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 614 } | |
| 615 | |
| 616 void | |
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617 approximate_botline_win( |
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618 win_T *wp) |
| 7 | 619 { |
| 620 wp->w_valid &= ~VALID_BOTLINE; | |
| 621 } | |
| 622 | |
| 623 /* | |
| 624 * Return TRUE if curwin->w_wrow and curwin->w_wcol are valid. | |
| 625 */ | |
| 626 int | |
|
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627 cursor_valid(void) |
| 7 | 628 { |
| 629 check_cursor_moved(curwin); | |
| 630 return ((curwin->w_valid & (VALID_WROW|VALID_WCOL)) == | |
| 631 (VALID_WROW|VALID_WCOL)); | |
| 632 } | |
| 633 | |
| 634 /* | |
| 635 * Validate cursor position. Makes sure w_wrow and w_wcol are valid. | |
| 636 * w_topline must be valid, you may need to call update_topline() first! | |
| 637 */ | |
| 638 void | |
|
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639 validate_cursor(void) |
| 7 | 640 { |
| 641 check_cursor_moved(curwin); | |
| 642 if ((curwin->w_valid & (VALID_WCOL|VALID_WROW)) != (VALID_WCOL|VALID_WROW)) | |
| 643 curs_columns(TRUE); | |
| 644 } | |
| 645 | |
| 646 #if defined(FEAT_GUI) || defined(PROTO) | |
| 647 /* | |
| 648 * validate w_cline_row. | |
| 649 */ | |
| 650 void | |
|
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651 validate_cline_row(void) |
| 7 | 652 { |
| 653 /* | |
| 654 * First make sure that w_topline is valid (after moving the cursor). | |
| 655 */ | |
| 656 update_topline(); | |
| 657 check_cursor_moved(curwin); | |
| 658 if (!(curwin->w_valid & VALID_CROW)) | |
| 6441 | 659 curs_rows(curwin); |
| 7 | 660 } |
| 661 #endif | |
| 662 | |
| 663 /* | |
| 664 * Compute wp->w_cline_row and wp->w_cline_height, based on the current value | |
|
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665 * of wp->w_topline. |
| 7 | 666 */ |
| 667 static void | |
|
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668 curs_rows(win_T *wp) |
| 7 | 669 { |
| 670 linenr_T lnum; | |
| 671 int i; | |
| 672 int all_invalid; | |
| 673 int valid; | |
| 674 #ifdef FEAT_FOLDING | |
| 675 long fold_count; | |
| 676 #endif | |
| 677 | |
|
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678 // Check if wp->w_lines[].wl_size is invalid |
| 7 | 679 all_invalid = (!redrawing() |
| 680 || wp->w_lines_valid == 0 | |
| 681 || wp->w_lines[0].wl_lnum > wp->w_topline); | |
| 682 i = 0; | |
| 683 wp->w_cline_row = 0; | |
| 684 for (lnum = wp->w_topline; lnum < wp->w_cursor.lnum; ++i) | |
| 685 { | |
| 686 valid = FALSE; | |
| 687 if (!all_invalid && i < wp->w_lines_valid) | |
| 688 { | |
| 689 if (wp->w_lines[i].wl_lnum < lnum || !wp->w_lines[i].wl_valid) | |
|
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690 continue; // skip changed or deleted lines |
| 7 | 691 if (wp->w_lines[i].wl_lnum == lnum) |
| 692 { | |
| 693 #ifdef FEAT_FOLDING | |
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694 // Check for newly inserted lines below this row, in which |
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695 // case we need to check for folded lines. |
| 7 | 696 if (!wp->w_buffer->b_mod_set |
| 697 || wp->w_lines[i].wl_lastlnum < wp->w_cursor.lnum | |
| 698 || wp->w_buffer->b_mod_top | |
| 699 > wp->w_lines[i].wl_lastlnum + 1) | |
| 700 #endif | |
| 701 valid = TRUE; | |
| 702 } | |
| 703 else if (wp->w_lines[i].wl_lnum > lnum) | |
|
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704 --i; // hold at inserted lines |
| 7 | 705 } |
| 706 if (valid | |
| 707 #ifdef FEAT_DIFF | |
| 708 && (lnum != wp->w_topline || !wp->w_p_diff) | |
| 709 #endif | |
| 710 ) | |
| 711 { | |
| 712 #ifdef FEAT_FOLDING | |
| 713 lnum = wp->w_lines[i].wl_lastlnum + 1; | |
|
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714 // Cursor inside folded lines, don't count this row |
| 7 | 715 if (lnum > wp->w_cursor.lnum) |
| 716 break; | |
| 717 #else | |
| 718 ++lnum; | |
| 719 #endif | |
| 720 wp->w_cline_row += wp->w_lines[i].wl_size; | |
| 721 } | |
| 722 else | |
| 723 { | |
| 724 #ifdef FEAT_FOLDING | |
| 725 fold_count = foldedCount(wp, lnum, NULL); | |
| 726 if (fold_count) | |
| 727 { | |
| 728 lnum += fold_count; | |
| 729 if (lnum > wp->w_cursor.lnum) | |
| 730 break; | |
| 731 ++wp->w_cline_row; | |
| 732 } | |
| 733 else | |
| 734 #endif | |
| 735 #ifdef FEAT_DIFF | |
| 736 if (lnum == wp->w_topline) | |
| 737 wp->w_cline_row += plines_win_nofill(wp, lnum++, TRUE) | |
| 738 + wp->w_topfill; | |
| 739 else | |
| 740 #endif | |
| 741 wp->w_cline_row += plines_win(wp, lnum++, TRUE); | |
| 742 } | |
| 743 } | |
| 744 | |
| 745 check_cursor_moved(wp); | |
| 746 if (!(wp->w_valid & VALID_CHEIGHT)) | |
| 747 { | |
| 748 if (all_invalid | |
| 749 || i == wp->w_lines_valid | |
| 750 || (i < wp->w_lines_valid | |
| 751 && (!wp->w_lines[i].wl_valid | |
| 752 || wp->w_lines[i].wl_lnum != wp->w_cursor.lnum))) | |
| 753 { | |
| 754 #ifdef FEAT_DIFF | |
| 755 if (wp->w_cursor.lnum == wp->w_topline) | |
| 756 wp->w_cline_height = plines_win_nofill(wp, wp->w_cursor.lnum, | |
| 757 TRUE) + wp->w_topfill; | |
| 758 else | |
| 759 #endif | |
| 760 wp->w_cline_height = plines_win(wp, wp->w_cursor.lnum, TRUE); | |
| 761 #ifdef FEAT_FOLDING | |
| 762 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
| 763 NULL, NULL, TRUE, NULL); | |
| 764 #endif | |
| 765 } | |
| 766 else if (i > wp->w_lines_valid) | |
| 767 { | |
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768 // a line that is too long to fit on the last screen line |
| 7 | 769 wp->w_cline_height = 0; |
| 770 #ifdef FEAT_FOLDING | |
| 771 wp->w_cline_folded = hasFoldingWin(wp, wp->w_cursor.lnum, | |
| 772 NULL, NULL, TRUE, NULL); | |
| 773 #endif | |
| 774 } | |
| 775 else | |
| 776 { | |
| 777 wp->w_cline_height = wp->w_lines[i].wl_size; | |
| 778 #ifdef FEAT_FOLDING | |
| 779 wp->w_cline_folded = wp->w_lines[i].wl_folded; | |
| 780 #endif | |
| 781 } | |
| 782 } | |
| 783 | |
| 5764 | 784 redraw_for_cursorline(curwin); |
| 7 | 785 wp->w_valid |= VALID_CROW|VALID_CHEIGHT; |
| 786 | |
| 787 } | |
| 788 | |
| 789 /* | |
| 790 * Validate curwin->w_virtcol only. | |
| 791 */ | |
| 792 void | |
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793 validate_virtcol(void) |
| 7 | 794 { |
| 795 validate_virtcol_win(curwin); | |
| 796 } | |
| 797 | |
| 798 /* | |
| 799 * Validate wp->w_virtcol only. | |
| 800 */ | |
| 801 void | |
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802 validate_virtcol_win(win_T *wp) |
| 7 | 803 { |
| 804 check_cursor_moved(wp); | |
| 805 if (!(wp->w_valid & VALID_VIRTCOL)) | |
| 806 { | |
| 807 getvvcol(wp, &wp->w_cursor, NULL, &(wp->w_virtcol), NULL); | |
| 808 wp->w_valid |= VALID_VIRTCOL; | |
| 740 | 809 #ifdef FEAT_SYN_HL |
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810 if (wp->w_p_cuc && !pum_visible()) |
| 740 | 811 redraw_win_later(wp, SOME_VALID); |
| 812 #endif | |
| 7 | 813 } |
| 814 } | |
| 815 | |
| 816 /* | |
| 817 * Validate curwin->w_cline_height only. | |
| 818 */ | |
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819 void |
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820 validate_cheight(void) |
| 7 | 821 { |
| 822 check_cursor_moved(curwin); | |
| 823 if (!(curwin->w_valid & VALID_CHEIGHT)) | |
| 824 { | |
| 825 #ifdef FEAT_DIFF | |
| 826 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 827 curwin->w_cline_height = plines_nofill(curwin->w_cursor.lnum) | |
| 828 + curwin->w_topfill; | |
| 829 else | |
| 830 #endif | |
| 831 curwin->w_cline_height = plines(curwin->w_cursor.lnum); | |
| 832 #ifdef FEAT_FOLDING | |
| 833 curwin->w_cline_folded = hasFolding(curwin->w_cursor.lnum, NULL, NULL); | |
| 834 #endif | |
| 835 curwin->w_valid |= VALID_CHEIGHT; | |
| 836 } | |
| 837 } | |
| 838 | |
| 839 /* | |
| 1668 | 840 * Validate w_wcol and w_virtcol only. |
| 7 | 841 */ |
| 842 void | |
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843 validate_cursor_col(void) |
| 7 | 844 { |
| 845 colnr_T off; | |
| 846 colnr_T col; | |
|
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847 int width; |
| 7 | 848 |
| 849 validate_virtcol(); | |
| 850 if (!(curwin->w_valid & VALID_WCOL)) | |
| 851 { | |
| 852 col = curwin->w_virtcol; | |
| 853 off = curwin_col_off(); | |
| 854 col += off; | |
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855 width = curwin->w_width - off + curwin_col_off2(); |
| 7 | 856 |
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857 // long line wrapping, adjust curwin->w_wrow |
| 1668 | 858 if (curwin->w_p_wrap |
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859 && col >= (colnr_T)curwin->w_width |
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860 && width > 0) |
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861 // use same formula as what is used in curs_columns() |
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862 col -= ((col - curwin->w_width) / width + 1) * width; |
| 1668 | 863 if (col > (int)curwin->w_leftcol) |
| 864 col -= curwin->w_leftcol; | |
| 865 else | |
| 866 col = 0; | |
| 7 | 867 curwin->w_wcol = col; |
| 1668 | 868 |
| 7 | 869 curwin->w_valid |= VALID_WCOL; |
| 870 } | |
| 871 } | |
| 872 | |
| 873 /* | |
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874 * Compute offset of a window, occupied by absolute or relative line number, |
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875 * fold column and sign column (these don't move when scrolling horizontally). |
| 7 | 876 */ |
| 877 int | |
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878 win_col_off(win_T *wp) |
| 7 | 879 { |
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880 return (((wp->w_p_nu || wp->w_p_rnu) ? number_width(wp) + 1 : 0) |
| 7 | 881 #ifdef FEAT_CMDWIN |
| 882 + (cmdwin_type == 0 || wp != curwin ? 0 : 1) | |
| 883 #endif | |
| 884 #ifdef FEAT_FOLDING | |
| 885 + wp->w_p_fdc | |
| 886 #endif | |
| 887 #ifdef FEAT_SIGNS | |
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888 + (signcolumn_on(wp) ? 2 : 0) |
| 7 | 889 #endif |
| 890 ); | |
| 891 } | |
| 892 | |
| 893 int | |
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894 curwin_col_off(void) |
| 7 | 895 { |
| 896 return win_col_off(curwin); | |
| 897 } | |
| 898 | |
| 899 /* | |
| 900 * Return the difference in column offset for the second screen line of a | |
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901 * wrapped line. It's 8 if 'number' or 'relativenumber' is on and 'n' is in |
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902 * 'cpoptions'. |
| 7 | 903 */ |
| 904 int | |
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905 win_col_off2(win_T *wp) |
| 7 | 906 { |
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907 if ((wp->w_p_nu || wp->w_p_rnu) && vim_strchr(p_cpo, CPO_NUMCOL) != NULL) |
| 13 | 908 return number_width(wp) + 1; |
| 7 | 909 return 0; |
| 910 } | |
| 911 | |
| 912 int | |
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913 curwin_col_off2(void) |
| 7 | 914 { |
| 915 return win_col_off2(curwin); | |
| 916 } | |
| 917 | |
| 918 /* | |
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919 * Compute curwin->w_wcol and curwin->w_virtcol. |
| 7 | 920 * Also updates curwin->w_wrow and curwin->w_cline_row. |
| 921 * Also updates curwin->w_leftcol. | |
| 922 */ | |
| 923 void | |
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924 curs_columns( |
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925 int may_scroll) // when TRUE, may scroll horizontally |
| 7 | 926 { |
| 927 int diff; | |
|
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928 int extra; // offset for first screen line |
| 7 | 929 int off_left, off_right; |
| 930 int n; | |
| 931 int p_lines; | |
| 932 int width = 0; | |
| 933 int textwidth; | |
| 934 int new_leftcol; | |
| 935 colnr_T startcol; | |
| 936 colnr_T endcol; | |
| 937 colnr_T prev_skipcol; | |
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938 long so = get_scrolloff_value(); |
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939 long siso = get_sidescrolloff_value(); |
| 7 | 940 |
| 941 /* | |
| 942 * First make sure that w_topline is valid (after moving the cursor). | |
| 943 */ | |
| 944 update_topline(); | |
| 945 | |
| 946 /* | |
| 947 * Next make sure that w_cline_row is valid. | |
| 948 */ | |
| 949 if (!(curwin->w_valid & VALID_CROW)) | |
| 6441 | 950 curs_rows(curwin); |
| 7 | 951 |
| 952 /* | |
| 953 * Compute the number of virtual columns. | |
| 954 */ | |
| 955 #ifdef FEAT_FOLDING | |
| 956 if (curwin->w_cline_folded) | |
|
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957 // In a folded line the cursor is always in the first column |
| 7 | 958 startcol = curwin->w_virtcol = endcol = curwin->w_leftcol; |
| 959 else | |
| 960 #endif | |
| 961 getvvcol(curwin, &curwin->w_cursor, | |
| 962 &startcol, &(curwin->w_virtcol), &endcol); | |
| 963 | |
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964 // remove '$' from change command when cursor moves onto it |
| 7 | 965 if (startcol > dollar_vcol) |
| 3318 | 966 dollar_vcol = -1; |
| 7 | 967 |
| 968 extra = curwin_col_off(); | |
| 969 curwin->w_wcol = curwin->w_virtcol + extra; | |
| 970 endcol += extra; | |
| 971 | |
| 972 /* | |
| 973 * Now compute w_wrow, counting screen lines from w_cline_row. | |
| 974 */ | |
| 975 curwin->w_wrow = curwin->w_cline_row; | |
| 976 | |
|
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|
977 textwidth = curwin->w_width - extra; |
| 7 | 978 if (textwidth <= 0) |
| 979 { | |
|
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|
980 // No room for text, put cursor in last char of window. |
|
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|
981 curwin->w_wcol = curwin->w_width - 1; |
| 7 | 982 curwin->w_wrow = curwin->w_height - 1; |
| 983 } | |
|
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|
984 else if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 985 { |
| 986 width = textwidth + curwin_col_off2(); | |
| 987 | |
|
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|
988 // long line wrapping, adjust curwin->w_wrow |
|
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|
989 if (curwin->w_wcol >= curwin->w_width) |
| 7 | 990 { |
|
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parents:
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changeset
|
991 #ifdef FEAT_LINEBREAK |
|
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|
992 char_u *sbr; |
|
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|
993 #endif |
|
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|
994 |
|
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|
995 // this same formula is used in validate_cursor_col() |
|
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|
996 n = (curwin->w_wcol - curwin->w_width) / width + 1; |
| 7 | 997 curwin->w_wcol -= n * width; |
| 998 curwin->w_wrow += n; | |
| 999 | |
| 1000 #ifdef FEAT_LINEBREAK | |
|
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|
1001 // When cursor wraps to first char of next line in Insert |
|
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|
1002 // mode, the 'showbreak' string isn't shown, backup to first |
|
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parents:
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|
1003 // column |
|
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|
1004 sbr = get_showbreak_value(curwin); |
|
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patch 8.1.2281: 'showbreak' cannot be set for one window
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|
1005 if (*sbr && *ml_get_cursor() == NUL |
|
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|
1006 && curwin->w_wcol == (int)vim_strsize(sbr)) |
| 7 | 1007 curwin->w_wcol = 0; |
| 1008 #endif | |
| 1009 } | |
| 1010 } | |
| 1011 | |
|
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|
1012 // No line wrapping: compute curwin->w_leftcol if scrolling is on and line |
|
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|
1013 // is not folded. |
|
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changeset
|
1014 // If scrolling is off, curwin->w_leftcol is assumed to be 0 |
| 3263 | 1015 else if (may_scroll |
| 7 | 1016 #ifdef FEAT_FOLDING |
| 1017 && !curwin->w_cline_folded | |
| 1018 #endif | |
| 1019 ) | |
| 1020 { | |
| 1021 /* | |
| 1022 * If Cursor is left of the screen, scroll rightwards. | |
| 1023 * If Cursor is right of the screen, scroll leftwards | |
| 1024 * If we get closer to the edge than 'sidescrolloff', scroll a little | |
| 1025 * extra | |
| 1026 */ | |
|
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|
1027 off_left = (int)startcol - (int)curwin->w_leftcol - siso; |
|
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1028 off_right = (int)endcol - (int)(curwin->w_leftcol + curwin->w_width |
|
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changeset
|
1029 - siso) + 1; |
| 7 | 1030 if (off_left < 0 || off_right > 0) |
| 1031 { | |
| 1032 if (off_left < 0) | |
| 1033 diff = -off_left; | |
| 1034 else | |
| 1035 diff = off_right; | |
| 1036 | |
|
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|
1037 // When far off or not enough room on either side, put cursor in |
|
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|
1038 // middle of window. |
| 7 | 1039 if (p_ss == 0 || diff >= textwidth / 2 || off_right >= off_left) |
| 1040 new_leftcol = curwin->w_wcol - extra - textwidth / 2; | |
| 1041 else | |
| 1042 { | |
| 1043 if (diff < p_ss) | |
| 1044 diff = p_ss; | |
| 1045 if (off_left < 0) | |
| 1046 new_leftcol = curwin->w_leftcol - diff; | |
| 1047 else | |
| 1048 new_leftcol = curwin->w_leftcol + diff; | |
| 1049 } | |
| 1050 if (new_leftcol < 0) | |
| 1051 new_leftcol = 0; | |
| 1052 if (new_leftcol != (int)curwin->w_leftcol) | |
| 1053 { | |
| 1054 curwin->w_leftcol = new_leftcol; | |
|
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|
1055 // screen has to be redrawn with new curwin->w_leftcol |
| 7 | 1056 redraw_later(NOT_VALID); |
| 1057 } | |
| 1058 } | |
| 1059 curwin->w_wcol -= curwin->w_leftcol; | |
| 1060 } | |
| 1061 else if (curwin->w_wcol > (int)curwin->w_leftcol) | |
| 1062 curwin->w_wcol -= curwin->w_leftcol; | |
| 1063 else | |
| 1064 curwin->w_wcol = 0; | |
| 1065 | |
| 1066 #ifdef FEAT_DIFF | |
|
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|
1067 // Skip over filler lines. At the top use w_topfill, there |
|
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|
1068 // may be some filler lines above the window. |
| 7 | 1069 if (curwin->w_cursor.lnum == curwin->w_topline) |
| 1070 curwin->w_wrow += curwin->w_topfill; | |
| 1071 else | |
| 1072 curwin->w_wrow += diff_check_fill(curwin, curwin->w_cursor.lnum); | |
| 1073 #endif | |
| 1074 | |
| 1075 prev_skipcol = curwin->w_skipcol; | |
| 1076 | |
| 1077 p_lines = 0; | |
|
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1078 |
| 7 | 1079 if ((curwin->w_wrow >= curwin->w_height |
| 1080 || ((prev_skipcol > 0 | |
|
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|
1081 || curwin->w_wrow + so >= curwin->w_height) |
| 7 | 1082 && (p_lines = |
| 1083 #ifdef FEAT_DIFF | |
| 1084 plines_win_nofill | |
| 1085 #else | |
| 1086 plines_win | |
| 1087 #endif | |
| 1088 (curwin, curwin->w_cursor.lnum, FALSE)) | |
| 1089 - 1 >= curwin->w_height)) | |
| 1090 && curwin->w_height != 0 | |
| 1091 && curwin->w_cursor.lnum == curwin->w_topline | |
| 1092 && width > 0 | |
|
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|
1093 && curwin->w_width != 0) |
| 7 | 1094 { |
|
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|
1095 // Cursor past end of screen. Happens with a single line that does |
|
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|
1096 // not fit on screen. Find a skipcol to show the text around the |
|
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|
1097 // cursor. Avoid scrolling all the time. compute value of "extra": |
|
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|
1098 // 1: Less than 'scrolloff' lines above |
|
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|
1099 // 2: Less than 'scrolloff' lines below |
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|
1100 // 3: both of them |
| 7 | 1101 extra = 0; |
|
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|
1102 if (curwin->w_skipcol + so * width > curwin->w_virtcol) |
| 7 | 1103 extra = 1; |
|
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|
1104 // Compute last display line of the buffer line that we want at the |
|
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|
1105 // bottom of the window. |
| 7 | 1106 if (p_lines == 0) |
| 1107 p_lines = plines_win(curwin, curwin->w_cursor.lnum, FALSE); | |
| 1108 --p_lines; | |
|
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|
1109 if (p_lines > curwin->w_wrow + so) |
|
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Bram Moolenaar <Bram@vim.org>
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changeset
|
1110 n = curwin->w_wrow + so; |
| 7 | 1111 else |
| 1112 n = p_lines; | |
| 1113 if ((colnr_T)n >= curwin->w_height + curwin->w_skipcol / width) | |
| 1114 extra += 2; | |
| 1115 | |
|
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|
1116 if (extra == 3 || p_lines < so * 2) |
| 7 | 1117 { |
|
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|
1118 // not enough room for 'scrolloff', put cursor in the middle |
| 7 | 1119 n = curwin->w_virtcol / width; |
| 1120 if (n > curwin->w_height / 2) | |
| 1121 n -= curwin->w_height / 2; | |
| 1122 else | |
| 1123 n = 0; | |
|
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|
1124 // don't skip more than necessary |
| 7 | 1125 if (n > p_lines - curwin->w_height + 1) |
| 1126 n = p_lines - curwin->w_height + 1; | |
| 1127 curwin->w_skipcol = n * width; | |
| 1128 } | |
| 1129 else if (extra == 1) | |
| 1130 { | |
|
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|
1131 // less then 'scrolloff' lines above, decrease skipcol |
|
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|
1132 extra = (curwin->w_skipcol + so * width - curwin->w_virtcol |
| 7 | 1133 + width - 1) / width; |
| 1134 if (extra > 0) | |
| 1135 { | |
| 1136 if ((colnr_T)(extra * width) > curwin->w_skipcol) | |
| 1137 extra = curwin->w_skipcol / width; | |
| 1138 curwin->w_skipcol -= extra * width; | |
| 1139 } | |
| 1140 } | |
| 1141 else if (extra == 2) | |
| 1142 { | |
|
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|
1143 // less then 'scrolloff' lines below, increase skipcol |
| 7 | 1144 endcol = (n - curwin->w_height + 1) * width; |
| 1145 while (endcol > curwin->w_virtcol) | |
| 1146 endcol -= width; | |
| 1147 if (endcol > curwin->w_skipcol) | |
| 1148 curwin->w_skipcol = endcol; | |
| 1149 } | |
| 1150 | |
| 1151 curwin->w_wrow -= curwin->w_skipcol / width; | |
| 1152 if (curwin->w_wrow >= curwin->w_height) | |
| 1153 { | |
|
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|
1154 // small window, make sure cursor is in it |
| 7 | 1155 extra = curwin->w_wrow - curwin->w_height + 1; |
| 1156 curwin->w_skipcol += extra * width; | |
| 1157 curwin->w_wrow -= extra; | |
| 1158 } | |
| 1159 | |
| 1160 extra = ((int)prev_skipcol - (int)curwin->w_skipcol) / width; | |
| 1161 if (extra > 0) | |
| 1162 win_ins_lines(curwin, 0, extra, FALSE, FALSE); | |
| 1163 else if (extra < 0) | |
|
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patch 8.0.0956: scrolling in a terminal window has flicker
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changeset
|
1164 win_del_lines(curwin, 0, -extra, FALSE, FALSE, 0); |
| 7 | 1165 } |
| 1166 else | |
| 1167 curwin->w_skipcol = 0; | |
| 1168 if (prev_skipcol != curwin->w_skipcol) | |
| 1169 redraw_later(NOT_VALID); | |
| 1170 | |
| 740 | 1171 #ifdef FEAT_SYN_HL |
|
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|
1172 // Redraw when w_virtcol changes and 'cursorcolumn' is set |
| 5749 | 1173 if (curwin->w_p_cuc && (curwin->w_valid & VALID_VIRTCOL) == 0 |
|
17809
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patch 8.1.1901: the +insert_expand feature is not always available
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|
1174 && !pum_visible()) |
| 5749 | 1175 redraw_later(SOME_VALID); |
|
2178
c6f1aa1e9f32
Add 'relativenumber' patch from Markus Heidelberg.
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|
1176 #endif |
|
19542
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|
1177 #if defined(FEAT_PROP_POPUP) && defined(FEAT_TERMINAL) |
|
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|
1178 if (popup_is_popup(curwin) && curbuf->b_term != NULL) |
|
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1179 { |
|
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|
1180 curwin->w_wrow += popup_top_extra(curwin); |
|
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1181 curwin->w_wcol += popup_left_extra(curwin); |
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1182 } |
|
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|
1183 #endif |
| 740 | 1184 |
|
18621
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|
1185 // now w_leftcol is valid, avoid check_cursor_moved() thinking otherwise |
|
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1186 curwin->w_valid_leftcol = curwin->w_leftcol; |
|
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|
1187 |
| 7 | 1188 curwin->w_valid |= VALID_WCOL|VALID_WROW|VALID_VIRTCOL; |
| 1189 } | |
| 1190 | |
|
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changeset
|
1191 #if (defined(FEAT_EVAL) || defined(FEAT_PROP_POPUP)) || defined(PROTO) |
|
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|
1192 /* |
|
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|
1193 * Compute the screen position of text character at "pos" in window "wp" |
|
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|
1194 * The resulting values are one-based, zero when character is not visible. |
|
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1195 */ |
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1196 void |
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1197 textpos2screenpos( |
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1198 win_T *wp, |
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1199 pos_T *pos, |
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1200 int *rowp, // screen row |
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1201 int *scolp, // start screen column |
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1202 int *ccolp, // cursor screen column |
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1203 int *ecolp) // end screen column |
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1204 { |
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1205 colnr_T scol = 0, ccol = 0, ecol = 0; |
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1206 int row = 0; |
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1207 int rowoff = 0; |
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1208 colnr_T coloff = 0; |
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1209 |
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1210 if (pos->lnum >= wp->w_topline && pos->lnum < wp->w_botline) |
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1211 { |
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1212 colnr_T off; |
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1213 colnr_T col; |
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1214 int width; |
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1215 |
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1216 row = plines_m_win(wp, wp->w_topline, pos->lnum - 1) + 1; |
|
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1217 getvcol(wp, pos, &scol, &ccol, &ecol); |
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1218 |
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1219 // similar to what is done in validate_cursor_col() |
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1220 col = scol; |
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1221 off = win_col_off(wp); |
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1222 col += off; |
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1223 width = wp->w_width - off + win_col_off2(wp); |
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1224 |
|
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1225 // long line wrapping, adjust row |
|
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1226 if (wp->w_p_wrap |
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1227 && col >= (colnr_T)wp->w_width |
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1228 && width > 0) |
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1229 { |
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1230 // use same formula as what is used in curs_columns() |
|
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1231 rowoff = ((col - wp->w_width) / width + 1); |
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1232 col -= rowoff * width; |
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1233 } |
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1234 col -= wp->w_leftcol; |
|
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|
1235 if (col >= wp->w_width) |
|
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1236 col = -1; |
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1237 if (col >= 0) |
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1238 coloff = col - scol + wp->w_wincol + 1; |
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1239 else |
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1240 // character is left or right of the window |
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1241 row = scol = ccol = ecol = 0; |
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1242 } |
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1243 *rowp = wp->w_winrow + row + rowoff; |
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1244 *scolp = scol + coloff; |
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1245 *ccolp = ccol + coloff; |
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1246 *ecolp = ecol + coloff; |
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1247 } |
|
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1248 #endif |
|
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1249 |
|
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1250 #if defined(FEAT_EVAL) || defined(PROTO) |
|
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1251 /* |
|
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1252 * "screenpos({winid}, {lnum}, {col})" function |
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1253 */ |
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1254 void |
|
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|
1255 f_screenpos(typval_T *argvars UNUSED, typval_T *rettv) |
|
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1256 { |
|
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1257 dict_T *dict; |
|
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|
1258 win_T *wp; |
|
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1259 pos_T pos; |
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1260 int row = 0; |
|
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1261 int scol = 0, ccol = 0, ecol = 0; |
|
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|
1262 |
|
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1263 if (rettv_dict_alloc(rettv) != OK) |
|
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1264 return; |
|
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1265 dict = rettv->vval.v_dict; |
|
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1266 |
|
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1267 wp = find_win_by_nr_or_id(&argvars[0]); |
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1268 if (wp == NULL) |
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1269 return; |
|
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1270 |
|
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1271 pos.lnum = tv_get_number(&argvars[1]); |
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1272 pos.col = tv_get_number(&argvars[2]) - 1; |
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1273 pos.coladd = 0; |
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1274 textpos2screenpos(wp, &pos, &row, &scol, &ccol, &ecol); |
|
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1275 |
|
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1276 dict_add_number(dict, "row", row); |
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1277 dict_add_number(dict, "col", scol); |
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1278 dict_add_number(dict, "curscol", ccol); |
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1279 dict_add_number(dict, "endcol", ecol); |
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1280 } |
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1281 #endif |
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1282 |
| 7 | 1283 /* |
| 1284 * Scroll the current window down by "line_count" logical lines. "CTRL-Y" | |
| 1285 */ | |
| 1286 void | |
|
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1287 scrolldown( |
|
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1288 long line_count, |
|
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1289 int byfold UNUSED) // TRUE: count a closed fold as one line |
| 7 | 1290 { |
|
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1291 long done = 0; // total # of physical lines done |
| 7 | 1292 int wrow; |
| 1293 int moved = FALSE; | |
| 1294 | |
| 1295 #ifdef FEAT_FOLDING | |
| 1296 linenr_T first; | |
| 1297 | |
|
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1298 // Make sure w_topline is at the first of a sequence of folded lines. |
| 7 | 1299 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
| 1300 #endif | |
|
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|
1301 validate_cursor(); // w_wrow needs to be valid |
| 7 | 1302 while (line_count-- > 0) |
| 1303 { | |
| 1304 #ifdef FEAT_DIFF | |
| 1980 | 1305 if (curwin->w_topfill < diff_check(curwin, curwin->w_topline) |
| 1306 && curwin->w_topfill < curwin->w_height - 1) | |
| 7 | 1307 { |
| 1308 ++curwin->w_topfill; | |
| 1309 ++done; | |
| 1310 } | |
| 1311 else | |
| 1312 #endif | |
| 1313 { | |
| 1314 if (curwin->w_topline == 1) | |
| 1315 break; | |
| 1316 --curwin->w_topline; | |
| 1317 #ifdef FEAT_DIFF | |
| 1318 curwin->w_topfill = 0; | |
| 1319 #endif | |
| 1320 #ifdef FEAT_FOLDING | |
|
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1321 // A sequence of folded lines only counts for one logical line |
| 7 | 1322 if (hasFolding(curwin->w_topline, &first, NULL)) |
| 1323 { | |
| 1324 ++done; | |
| 1325 if (!byfold) | |
| 1326 line_count -= curwin->w_topline - first - 1; | |
| 1327 curwin->w_botline -= curwin->w_topline - first; | |
| 1328 curwin->w_topline = first; | |
| 1329 } | |
| 1330 else | |
| 1331 #endif | |
|
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1332 done += PLINES_NOFILL(curwin->w_topline); |
| 7 | 1333 } |
|
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1334 --curwin->w_botline; // approximate w_botline |
| 7 | 1335 invalidate_botline(); |
| 1336 } | |
|
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1337 curwin->w_wrow += done; // keep w_wrow updated |
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1338 curwin->w_cline_row += done; // keep w_cline_row updated |
| 7 | 1339 |
| 1340 #ifdef FEAT_DIFF | |
| 1341 if (curwin->w_cursor.lnum == curwin->w_topline) | |
| 1342 curwin->w_cline_row = 0; | |
| 1343 check_topfill(curwin, TRUE); | |
| 1344 #endif | |
| 1345 | |
| 1346 /* | |
| 1347 * Compute the row number of the last row of the cursor line | |
| 1348 * and move the cursor onto the displayed part of the window. | |
| 1349 */ | |
| 1350 wrow = curwin->w_wrow; | |
|
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1351 if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 1352 { |
| 1353 validate_virtcol(); | |
| 1354 validate_cheight(); | |
| 1355 wrow += curwin->w_cline_height - 1 - | |
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1356 curwin->w_virtcol / curwin->w_width; |
| 7 | 1357 } |
| 1358 while (wrow >= curwin->w_height && curwin->w_cursor.lnum > 1) | |
| 1359 { | |
| 1360 #ifdef FEAT_FOLDING | |
| 1361 if (hasFolding(curwin->w_cursor.lnum, &first, NULL)) | |
| 1362 { | |
| 1363 --wrow; | |
| 1364 if (first == 1) | |
| 1365 curwin->w_cursor.lnum = 1; | |
| 1366 else | |
| 1367 curwin->w_cursor.lnum = first - 1; | |
| 1368 } | |
| 1369 else | |
| 1370 #endif | |
| 1371 wrow -= plines(curwin->w_cursor.lnum--); | |
| 1372 curwin->w_valid &= | |
| 1373 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
| 1374 moved = TRUE; | |
| 1375 } | |
| 1376 if (moved) | |
| 1377 { | |
| 1378 #ifdef FEAT_FOLDING | |
|
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1379 // Move cursor to first line of closed fold. |
| 7 | 1380 foldAdjustCursor(); |
| 1381 #endif | |
| 1382 coladvance(curwin->w_curswant); | |
| 1383 } | |
| 1384 } | |
| 1385 | |
| 1386 /* | |
| 1387 * Scroll the current window up by "line_count" logical lines. "CTRL-E" | |
| 1388 */ | |
| 1389 void | |
|
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|
1390 scrollup( |
|
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1391 long line_count, |
|
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1392 int byfold UNUSED) // TRUE: count a closed fold as one line |
| 7 | 1393 { |
| 1394 #if defined(FEAT_FOLDING) || defined(FEAT_DIFF) | |
| 1395 linenr_T lnum; | |
| 1396 | |
| 1397 if ( | |
| 1398 # ifdef FEAT_FOLDING | |
| 1399 (byfold && hasAnyFolding(curwin)) | |
| 1400 # ifdef FEAT_DIFF | |
| 1401 || | |
| 1402 # endif | |
| 1403 # endif | |
| 1404 # ifdef FEAT_DIFF | |
| 1405 curwin->w_p_diff | |
| 1406 # endif | |
| 1407 ) | |
| 1408 { | |
|
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1409 // count each sequence of folded lines as one logical line |
| 7 | 1410 lnum = curwin->w_topline; |
| 1411 while (line_count--) | |
| 1412 { | |
| 1413 # ifdef FEAT_DIFF | |
| 1414 if (curwin->w_topfill > 0) | |
| 1415 --curwin->w_topfill; | |
| 1416 else | |
| 1417 # endif | |
| 1418 { | |
| 1419 # ifdef FEAT_FOLDING | |
| 1420 if (byfold) | |
| 1421 (void)hasFolding(lnum, NULL, &lnum); | |
| 1422 # endif | |
| 1423 if (lnum >= curbuf->b_ml.ml_line_count) | |
| 1424 break; | |
| 1425 ++lnum; | |
| 1426 # ifdef FEAT_DIFF | |
| 1427 curwin->w_topfill = diff_check_fill(curwin, lnum); | |
| 1428 # endif | |
| 1429 } | |
| 1430 } | |
|
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1431 // approximate w_botline |
| 7 | 1432 curwin->w_botline += lnum - curwin->w_topline; |
| 1433 curwin->w_topline = lnum; | |
| 1434 } | |
| 1435 else | |
| 1436 #endif | |
| 1437 { | |
| 1438 curwin->w_topline += line_count; | |
|
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1439 curwin->w_botline += line_count; // approximate w_botline |
| 7 | 1440 } |
| 1441 | |
| 1442 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
| 1443 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
| 1444 if (curwin->w_botline > curbuf->b_ml.ml_line_count + 1) | |
| 1445 curwin->w_botline = curbuf->b_ml.ml_line_count + 1; | |
| 1446 | |
| 1447 #ifdef FEAT_DIFF | |
| 1448 check_topfill(curwin, FALSE); | |
| 1449 #endif | |
| 1450 | |
| 1451 #ifdef FEAT_FOLDING | |
| 1452 if (hasAnyFolding(curwin)) | |
|
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1453 // Make sure w_topline is at the first of a sequence of folded lines. |
| 7 | 1454 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
| 1455 #endif | |
| 1456 | |
| 1457 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 1458 if (curwin->w_cursor.lnum < curwin->w_topline) | |
| 1459 { | |
| 1460 curwin->w_cursor.lnum = curwin->w_topline; | |
| 1461 curwin->w_valid &= | |
| 1462 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW|VALID_VIRTCOL); | |
| 1463 coladvance(curwin->w_curswant); | |
| 1464 } | |
| 1465 } | |
| 1466 | |
| 1467 #ifdef FEAT_DIFF | |
| 1468 /* | |
| 1469 * Don't end up with too many filler lines in the window. | |
| 1470 */ | |
| 1471 void | |
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1472 check_topfill( |
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1473 win_T *wp, |
|
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1474 int down) // when TRUE scroll down when not enough space |
| 7 | 1475 { |
| 1476 int n; | |
| 1477 | |
| 1478 if (wp->w_topfill > 0) | |
| 1479 { | |
| 1480 n = plines_win_nofill(wp, wp->w_topline, TRUE); | |
| 1481 if (wp->w_topfill + n > wp->w_height) | |
| 1482 { | |
| 1483 if (down && wp->w_topline > 1) | |
| 1484 { | |
| 1485 --wp->w_topline; | |
| 1486 wp->w_topfill = 0; | |
| 1487 } | |
| 1488 else | |
| 1489 { | |
| 1490 wp->w_topfill = wp->w_height - n; | |
| 1491 if (wp->w_topfill < 0) | |
| 1492 wp->w_topfill = 0; | |
| 1493 } | |
| 1494 } | |
| 1495 } | |
| 1496 } | |
| 1497 | |
| 1498 /* | |
| 1499 * Use as many filler lines as possible for w_topline. Make sure w_topline | |
| 1500 * is still visible. | |
| 1501 */ | |
| 1502 static void | |
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1503 max_topfill(void) |
| 7 | 1504 { |
| 1505 int n; | |
| 1506 | |
| 1507 n = plines_nofill(curwin->w_topline); | |
| 1508 if (n >= curwin->w_height) | |
| 1509 curwin->w_topfill = 0; | |
| 1510 else | |
| 1511 { | |
| 1512 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 1513 if (curwin->w_topfill + n > curwin->w_height) | |
| 1514 curwin->w_topfill = curwin->w_height - n; | |
| 1515 } | |
| 1516 } | |
| 1517 #endif | |
| 1518 | |
| 1519 /* | |
| 1520 * Scroll the screen one line down, but don't do it if it would move the | |
| 1521 * cursor off the screen. | |
| 1522 */ | |
| 1523 void | |
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1524 scrolldown_clamp(void) |
| 7 | 1525 { |
| 1526 int end_row; | |
| 1527 #ifdef FEAT_DIFF | |
| 1528 int can_fill = (curwin->w_topfill | |
| 1529 < diff_check_fill(curwin, curwin->w_topline)); | |
| 1530 #endif | |
| 1531 | |
| 1532 if (curwin->w_topline <= 1 | |
| 1533 #ifdef FEAT_DIFF | |
| 1534 && !can_fill | |
| 1535 #endif | |
| 1536 ) | |
| 1537 return; | |
| 1538 | |
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1539 validate_cursor(); // w_wrow needs to be valid |
| 7 | 1540 |
| 1541 /* | |
| 1542 * Compute the row number of the last row of the cursor line | |
| 1543 * and make sure it doesn't go off the screen. Make sure the cursor | |
| 1544 * doesn't go past 'scrolloff' lines from the screen end. | |
| 1545 */ | |
| 1546 end_row = curwin->w_wrow; | |
| 1547 #ifdef FEAT_DIFF | |
| 1548 if (can_fill) | |
| 1549 ++end_row; | |
| 1550 else | |
| 1551 end_row += plines_nofill(curwin->w_topline - 1); | |
| 1552 #else | |
| 1553 end_row += plines(curwin->w_topline - 1); | |
| 1554 #endif | |
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1555 if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 1556 { |
| 1557 validate_cheight(); | |
| 1558 validate_virtcol(); | |
| 1559 end_row += curwin->w_cline_height - 1 - | |
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1560 curwin->w_virtcol / curwin->w_width; |
| 7 | 1561 } |
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1562 if (end_row < curwin->w_height - get_scrolloff_value()) |
| 7 | 1563 { |
| 1564 #ifdef FEAT_DIFF | |
| 1565 if (can_fill) | |
| 1566 { | |
| 1567 ++curwin->w_topfill; | |
| 1568 check_topfill(curwin, TRUE); | |
| 1569 } | |
| 1570 else | |
| 1571 { | |
| 1572 --curwin->w_topline; | |
| 1573 curwin->w_topfill = 0; | |
| 1574 } | |
| 1575 #else | |
| 1576 --curwin->w_topline; | |
| 1577 #endif | |
| 1578 #ifdef FEAT_FOLDING | |
| 7009 | 1579 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
| 7 | 1580 #endif |
|
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1581 --curwin->w_botline; // approximate w_botline |
| 7 | 1582 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); |
| 1583 } | |
| 1584 } | |
| 1585 | |
| 1586 /* | |
| 1587 * Scroll the screen one line up, but don't do it if it would move the cursor | |
| 1588 * off the screen. | |
| 1589 */ | |
| 1590 void | |
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changeset
|
1591 scrollup_clamp(void) |
| 7 | 1592 { |
| 1593 int start_row; | |
| 1594 | |
| 1595 if (curwin->w_topline == curbuf->b_ml.ml_line_count | |
| 1596 #ifdef FEAT_DIFF | |
| 1597 && curwin->w_topfill == 0 | |
| 1598 #endif | |
| 1599 ) | |
| 1600 return; | |
| 1601 | |
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1602 validate_cursor(); // w_wrow needs to be valid |
| 7 | 1603 |
| 1604 /* | |
| 1605 * Compute the row number of the first row of the cursor line | |
| 1606 * and make sure it doesn't go off the screen. Make sure the cursor | |
| 1607 * doesn't go before 'scrolloff' lines from the screen start. | |
| 1608 */ | |
| 1609 #ifdef FEAT_DIFF | |
| 1610 start_row = curwin->w_wrow - plines_nofill(curwin->w_topline) | |
| 1611 - curwin->w_topfill; | |
| 1612 #else | |
| 1613 start_row = curwin->w_wrow - plines(curwin->w_topline); | |
| 1614 #endif | |
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1615 if (curwin->w_p_wrap && curwin->w_width != 0) |
| 7 | 1616 { |
| 1617 validate_virtcol(); | |
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1618 start_row -= curwin->w_virtcol / curwin->w_width; |
| 7 | 1619 } |
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1620 if (start_row >= get_scrolloff_value()) |
| 7 | 1621 { |
| 1622 #ifdef FEAT_DIFF | |
| 1623 if (curwin->w_topfill > 0) | |
| 1624 --curwin->w_topfill; | |
| 1625 else | |
| 1626 #endif | |
| 36 | 1627 { |
| 1628 #ifdef FEAT_FOLDING | |
| 1629 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
| 1630 #endif | |
| 7 | 1631 ++curwin->w_topline; |
| 36 | 1632 } |
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1633 ++curwin->w_botline; // approximate w_botline |
| 7 | 1634 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); |
| 1635 } | |
| 1636 } | |
| 1637 | |
| 1638 /* | |
| 1639 * Add one line above "lp->lnum". This can be a filler line, a closed fold or | |
| 1640 * a (wrapped) text line. Uses and sets "lp->fill". | |
| 1641 * Returns the height of the added line in "lp->height". | |
|
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1642 * Lines above the first one are incredibly high: MAXCOL. |
| 7 | 1643 */ |
| 1644 static void | |
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1645 topline_back(lineoff_T *lp) |
| 7 | 1646 { |
| 1647 #ifdef FEAT_DIFF | |
| 1648 if (lp->fill < diff_check_fill(curwin, lp->lnum)) | |
| 1649 { | |
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1650 // Add a filler line. |
| 7 | 1651 ++lp->fill; |
| 1652 lp->height = 1; | |
| 1653 } | |
| 1654 else | |
| 1655 #endif | |
| 1656 { | |
| 1657 --lp->lnum; | |
| 1658 #ifdef FEAT_DIFF | |
| 1659 lp->fill = 0; | |
| 1660 #endif | |
| 1661 if (lp->lnum < 1) | |
| 1662 lp->height = MAXCOL; | |
| 1663 else | |
| 1664 #ifdef FEAT_FOLDING | |
| 1665 if (hasFolding(lp->lnum, &lp->lnum, NULL)) | |
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1666 // Add a closed fold |
| 7 | 1667 lp->height = 1; |
| 1668 else | |
| 1669 #endif | |
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|
1670 lp->height = PLINES_NOFILL(lp->lnum); |
| 7 | 1671 } |
| 1672 } | |
| 1673 | |
| 1674 /* | |
| 1675 * Add one line below "lp->lnum". This can be a filler line, a closed fold or | |
| 1676 * a (wrapped) text line. Uses and sets "lp->fill". | |
| 1677 * Returns the height of the added line in "lp->height". | |
| 1678 * Lines below the last one are incredibly high. | |
| 1679 */ | |
| 1680 static void | |
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1681 botline_forw(lineoff_T *lp) |
| 7 | 1682 { |
| 1683 #ifdef FEAT_DIFF | |
| 1684 if (lp->fill < diff_check_fill(curwin, lp->lnum + 1)) | |
| 1685 { | |
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1686 // Add a filler line. |
| 7 | 1687 ++lp->fill; |
| 1688 lp->height = 1; | |
| 1689 } | |
| 1690 else | |
| 1691 #endif | |
| 1692 { | |
| 1693 ++lp->lnum; | |
| 1694 #ifdef FEAT_DIFF | |
| 1695 lp->fill = 0; | |
| 1696 #endif | |
| 1697 if (lp->lnum > curbuf->b_ml.ml_line_count) | |
| 1698 lp->height = MAXCOL; | |
| 1699 else | |
| 1700 #ifdef FEAT_FOLDING | |
| 1701 if (hasFolding(lp->lnum, NULL, &lp->lnum)) | |
|
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1702 // Add a closed fold |
| 7 | 1703 lp->height = 1; |
| 1704 else | |
| 1705 #endif | |
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|
1706 lp->height = PLINES_NOFILL(lp->lnum); |
| 7 | 1707 } |
| 1708 } | |
| 1709 | |
| 1710 #ifdef FEAT_DIFF | |
| 1711 /* | |
| 1712 * Switch from including filler lines below lp->lnum to including filler | |
| 1713 * lines above loff.lnum + 1. This keeps pointing to the same line. | |
| 1714 * When there are no filler lines nothing changes. | |
| 1715 */ | |
| 1716 static void | |
|
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1717 botline_topline(lineoff_T *lp) |
| 7 | 1718 { |
| 1719 if (lp->fill > 0) | |
| 1720 { | |
| 1721 ++lp->lnum; | |
| 1722 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
| 1723 } | |
| 1724 } | |
| 1725 | |
| 1726 /* | |
| 1727 * Switch from including filler lines above lp->lnum to including filler | |
| 1728 * lines below loff.lnum - 1. This keeps pointing to the same line. | |
| 1729 * When there are no filler lines nothing changes. | |
| 1730 */ | |
| 1731 static void | |
|
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1732 topline_botline(lineoff_T *lp) |
| 7 | 1733 { |
| 1734 if (lp->fill > 0) | |
| 1735 { | |
| 1736 lp->fill = diff_check_fill(curwin, lp->lnum) - lp->fill + 1; | |
| 1737 --lp->lnum; | |
| 1738 } | |
| 1739 } | |
| 1740 #endif | |
| 1741 | |
| 1742 /* | |
| 1743 * Recompute topline to put the cursor at the top of the window. | |
| 1744 * Scroll at least "min_scroll" lines. | |
| 1745 * If "always" is TRUE, always set topline (for "zt"). | |
| 1746 */ | |
| 1747 void | |
|
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1748 scroll_cursor_top(int min_scroll, int always) |
| 7 | 1749 { |
| 1750 int scrolled = 0; | |
| 1751 int extra = 0; | |
| 1752 int used; | |
| 1753 int i; | |
|
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1754 linenr_T top; // just above displayed lines |
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1755 linenr_T bot; // just below displayed lines |
| 7 | 1756 linenr_T old_topline = curwin->w_topline; |
| 1757 #ifdef FEAT_DIFF | |
| 1758 linenr_T old_topfill = curwin->w_topfill; | |
| 1759 #endif | |
| 1760 linenr_T new_topline; | |
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1761 int off = get_scrolloff_value(); |
| 7 | 1762 |
| 1763 if (mouse_dragging > 0) | |
| 1764 off = mouse_dragging - 1; | |
| 1765 | |
| 1766 /* | |
| 1767 * Decrease topline until: | |
| 1768 * - it has become 1 | |
| 1769 * - (part of) the cursor line is moved off the screen or | |
| 1770 * - moved at least 'scrolljump' lines and | |
| 1771 * - at least 'scrolloff' lines above and below the cursor | |
| 1772 */ | |
| 1773 validate_cheight(); | |
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1774 used = curwin->w_cline_height; // includes filler lines above |
| 7 | 1775 if (curwin->w_cursor.lnum < curwin->w_topline) |
| 1776 scrolled = used; | |
| 1777 | |
| 1778 #ifdef FEAT_FOLDING | |
| 1779 if (hasFolding(curwin->w_cursor.lnum, &top, &bot)) | |
| 1780 { | |
| 1781 --top; | |
| 1782 ++bot; | |
| 1783 } | |
| 1784 else | |
| 1785 #endif | |
| 1786 { | |
| 1787 top = curwin->w_cursor.lnum - 1; | |
| 1788 bot = curwin->w_cursor.lnum + 1; | |
| 1789 } | |
| 1790 new_topline = top + 1; | |
| 1791 | |
| 1792 #ifdef FEAT_DIFF | |
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1793 // "used" already contains the number of filler lines above, don't add it |
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1794 // again. |
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1795 // Hide filler lines above cursor line by adding them to "extra". |
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1796 extra += diff_check_fill(curwin, curwin->w_cursor.lnum); |
| 7 | 1797 #endif |
| 1798 | |
| 1799 /* | |
| 1800 * Check if the lines from "top" to "bot" fit in the window. If they do, | |
| 1801 * set new_topline and advance "top" and "bot" to include more lines. | |
| 1802 */ | |
| 1803 while (top > 0) | |
| 1804 { | |
| 1805 #ifdef FEAT_FOLDING | |
| 1806 if (hasFolding(top, &top, NULL)) | |
|
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1807 // count one logical line for a sequence of folded lines |
| 7 | 1808 i = 1; |
| 1809 else | |
| 1810 #endif | |
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1811 i = PLINES_NOFILL(top); |
| 7 | 1812 used += i; |
| 1813 if (extra + i <= off && bot < curbuf->b_ml.ml_line_count) | |
| 1814 { | |
| 1815 #ifdef FEAT_FOLDING | |
| 1816 if (hasFolding(bot, NULL, &bot)) | |
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1817 // count one logical line for a sequence of folded lines |
| 7 | 1818 ++used; |
| 1819 else | |
| 1820 #endif | |
| 1821 used += plines(bot); | |
| 1822 } | |
| 1823 if (used > curwin->w_height) | |
| 1824 break; | |
| 1825 if (top < curwin->w_topline) | |
| 1826 scrolled += i; | |
| 1827 | |
| 1828 /* | |
| 1829 * If scrolling is needed, scroll at least 'sj' lines. | |
| 1830 */ | |
| 1831 if ((new_topline >= curwin->w_topline || scrolled > min_scroll) | |
| 1832 && extra >= off) | |
| 1833 break; | |
| 1834 | |
| 1835 extra += i; | |
| 1836 new_topline = top; | |
| 1837 --top; | |
| 1838 ++bot; | |
| 1839 } | |
| 1840 | |
| 1841 /* | |
| 1842 * If we don't have enough space, put cursor in the middle. | |
| 1843 * This makes sure we get the same position when using "k" and "j" | |
| 1844 * in a small window. | |
| 1845 */ | |
| 1846 if (used > curwin->w_height) | |
| 1847 scroll_cursor_halfway(FALSE); | |
| 1848 else | |
| 1849 { | |
| 1850 /* | |
| 1851 * If "always" is FALSE, only adjust topline to a lower value, higher | |
| 1852 * value may happen with wrapping lines | |
| 1853 */ | |
| 1854 if (new_topline < curwin->w_topline || always) | |
| 1855 curwin->w_topline = new_topline; | |
| 1856 if (curwin->w_topline > curwin->w_cursor.lnum) | |
| 1857 curwin->w_topline = curwin->w_cursor.lnum; | |
| 1858 #ifdef FEAT_DIFF | |
| 1859 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 1860 if (curwin->w_topfill > 0 && extra > off) | |
| 1861 { | |
| 1862 curwin->w_topfill -= extra - off; | |
| 1863 if (curwin->w_topfill < 0) | |
| 1864 curwin->w_topfill = 0; | |
| 1865 } | |
| 1866 check_topfill(curwin, FALSE); | |
| 1867 #endif | |
| 1868 if (curwin->w_topline != old_topline | |
| 1869 #ifdef FEAT_DIFF | |
| 1870 || curwin->w_topfill != old_topfill | |
| 1871 #endif | |
| 1872 ) | |
| 1873 curwin->w_valid &= | |
| 1874 ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 1875 curwin->w_valid |= VALID_TOPLINE; | |
| 1876 } | |
| 1877 } | |
| 1878 | |
| 1879 /* | |
| 1880 * Set w_empty_rows and w_filler_rows for window "wp", having used up "used" | |
| 1881 * screen lines for text lines. | |
| 1882 */ | |
| 1883 void | |
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1884 set_empty_rows(win_T *wp, int used) |
| 7 | 1885 { |
| 1886 #ifdef FEAT_DIFF | |
| 1887 wp->w_filler_rows = 0; | |
| 1888 #endif | |
| 1889 if (used == 0) | |
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1890 wp->w_empty_rows = 0; // single line that doesn't fit |
| 7 | 1891 else |
| 1892 { | |
| 1893 wp->w_empty_rows = wp->w_height - used; | |
| 1894 #ifdef FEAT_DIFF | |
| 1895 if (wp->w_botline <= wp->w_buffer->b_ml.ml_line_count) | |
| 1896 { | |
| 1897 wp->w_filler_rows = diff_check_fill(wp, wp->w_botline); | |
| 1898 if (wp->w_empty_rows > wp->w_filler_rows) | |
| 1899 wp->w_empty_rows -= wp->w_filler_rows; | |
| 1900 else | |
| 1901 { | |
| 1902 wp->w_filler_rows = wp->w_empty_rows; | |
| 1903 wp->w_empty_rows = 0; | |
| 1904 } | |
| 1905 } | |
| 1906 #endif | |
| 1907 } | |
| 1908 } | |
| 1909 | |
| 1910 /* | |
| 1911 * Recompute topline to put the cursor at the bottom of the window. | |
| 1912 * Scroll at least "min_scroll" lines. | |
| 1913 * If "set_topbot" is TRUE, set topline and botline first (for "zb"). | |
| 1914 * This is messy stuff!!! | |
| 1915 */ | |
| 1916 void | |
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1917 scroll_cursor_bot(int min_scroll, int set_topbot) |
| 7 | 1918 { |
| 1919 int used; | |
| 1920 int scrolled = 0; | |
| 1921 int extra = 0; | |
| 1922 int i; | |
| 1923 linenr_T line_count; | |
| 1924 linenr_T old_topline = curwin->w_topline; | |
| 1925 lineoff_T loff; | |
| 1926 lineoff_T boff; | |
| 1927 #ifdef FEAT_DIFF | |
| 1928 int old_topfill = curwin->w_topfill; | |
| 1929 int fill_below_window; | |
| 1930 #endif | |
| 1931 linenr_T old_botline = curwin->w_botline; | |
| 1932 linenr_T old_valid = curwin->w_valid; | |
| 1933 int old_empty_rows = curwin->w_empty_rows; | |
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1934 linenr_T cln; // Cursor Line Number |
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1935 long so = get_scrolloff_value(); |
| 7 | 1936 |
| 1937 cln = curwin->w_cursor.lnum; | |
| 1938 if (set_topbot) | |
| 1939 { | |
| 1940 used = 0; | |
| 1941 curwin->w_botline = cln + 1; | |
| 1942 #ifdef FEAT_DIFF | |
| 1943 loff.fill = 0; | |
| 1944 #endif | |
| 1945 for (curwin->w_topline = curwin->w_botline; | |
| 1946 curwin->w_topline > 1; | |
| 1947 curwin->w_topline = loff.lnum) | |
| 1948 { | |
| 1949 loff.lnum = curwin->w_topline; | |
| 1950 topline_back(&loff); | |
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1951 if (loff.height == MAXCOL || used + loff.height > curwin->w_height) |
| 7 | 1952 break; |
| 1953 used += loff.height; | |
| 1954 #ifdef FEAT_DIFF | |
| 1955 curwin->w_topfill = loff.fill; | |
| 1956 #endif | |
| 1957 } | |
| 1958 set_empty_rows(curwin, used); | |
| 1959 curwin->w_valid |= VALID_BOTLINE|VALID_BOTLINE_AP; | |
| 1960 if (curwin->w_topline != old_topline | |
| 1961 #ifdef FEAT_DIFF | |
| 1962 || curwin->w_topfill != old_topfill | |
| 1963 #endif | |
| 1964 ) | |
| 1965 curwin->w_valid &= ~(VALID_WROW|VALID_CROW); | |
| 1966 } | |
| 1967 else | |
| 1968 validate_botline(); | |
| 1969 | |
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1970 // The lines of the cursor line itself are always used. |
| 7 | 1971 #ifdef FEAT_DIFF |
| 1972 used = plines_nofill(cln); | |
| 1973 #else | |
| 1974 validate_cheight(); | |
| 1975 used = curwin->w_cline_height; | |
| 1976 #endif | |
| 1977 | |
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1978 // If the cursor is below botline, we will at least scroll by the height |
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1979 // of the cursor line. Correct for empty lines, which are really part of |
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1980 // botline. |
| 7 | 1981 if (cln >= curwin->w_botline) |
| 1982 { | |
| 1983 scrolled = used; | |
| 1984 if (cln == curwin->w_botline) | |
| 1985 scrolled -= curwin->w_empty_rows; | |
| 1986 } | |
| 1987 | |
| 1988 /* | |
| 1989 * Stop counting lines to scroll when | |
| 1990 * - hitting start of the file | |
| 1991 * - scrolled nothing or at least 'sj' lines | |
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1992 * - at least 'scrolloff' lines below the cursor |
| 7 | 1993 * - lines between botline and cursor have been counted |
| 1994 */ | |
| 1995 #ifdef FEAT_FOLDING | |
| 1996 if (!hasFolding(curwin->w_cursor.lnum, &loff.lnum, &boff.lnum)) | |
| 1997 #endif | |
| 1998 { | |
| 1999 loff.lnum = cln; | |
| 2000 boff.lnum = cln; | |
| 2001 } | |
| 2002 #ifdef FEAT_DIFF | |
| 2003 loff.fill = 0; | |
| 2004 boff.fill = 0; | |
| 2005 fill_below_window = diff_check_fill(curwin, curwin->w_botline) | |
| 2006 - curwin->w_filler_rows; | |
| 2007 #endif | |
| 2008 | |
| 2009 while (loff.lnum > 1) | |
| 2010 { | |
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2011 // Stop when scrolled nothing or at least "min_scroll", found "extra" |
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2012 // context for 'scrolloff' and counted all lines below the window. |
| 7 | 2013 if ((((scrolled <= 0 || scrolled >= min_scroll) |
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2014 && extra >= (mouse_dragging > 0 ? mouse_dragging - 1 : so)) |
| 7 | 2015 || boff.lnum + 1 > curbuf->b_ml.ml_line_count) |
| 2016 && loff.lnum <= curwin->w_botline | |
| 2017 #ifdef FEAT_DIFF | |
| 2018 && (loff.lnum < curwin->w_botline | |
| 2019 || loff.fill >= fill_below_window) | |
| 2020 #endif | |
| 2021 ) | |
| 2022 break; | |
| 2023 | |
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2024 // Add one line above |
| 7 | 2025 topline_back(&loff); |
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2026 if (loff.height == MAXCOL) |
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2027 used = MAXCOL; |
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2028 else |
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2029 used += loff.height; |
| 7 | 2030 if (used > curwin->w_height) |
| 2031 break; | |
| 2032 if (loff.lnum >= curwin->w_botline | |
| 2033 #ifdef FEAT_DIFF | |
| 2034 && (loff.lnum > curwin->w_botline | |
| 2035 || loff.fill <= fill_below_window) | |
| 2036 #endif | |
| 2037 ) | |
| 2038 { | |
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2039 // Count screen lines that are below the window. |
| 7 | 2040 scrolled += loff.height; |
| 2041 if (loff.lnum == curwin->w_botline | |
| 2042 #ifdef FEAT_DIFF | |
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2043 && loff.fill == 0 |
| 7 | 2044 #endif |
| 2045 ) | |
| 2046 scrolled -= curwin->w_empty_rows; | |
| 2047 } | |
| 2048 | |
| 2049 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
| 2050 { | |
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2051 // Add one line below |
| 7 | 2052 botline_forw(&boff); |
| 2053 used += boff.height; | |
| 2054 if (used > curwin->w_height) | |
| 2055 break; | |
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2056 if (extra < ( mouse_dragging > 0 ? mouse_dragging - 1 : so) |
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2057 || scrolled < min_scroll) |
| 7 | 2058 { |
| 2059 extra += boff.height; | |
| 2060 if (boff.lnum >= curwin->w_botline | |
| 2061 #ifdef FEAT_DIFF | |
| 2062 || (boff.lnum + 1 == curwin->w_botline | |
| 2063 && boff.fill > curwin->w_filler_rows) | |
| 2064 #endif | |
| 2065 ) | |
| 2066 { | |
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2067 // Count screen lines that are below the window. |
| 7 | 2068 scrolled += boff.height; |
| 2069 if (boff.lnum == curwin->w_botline | |
| 2070 #ifdef FEAT_DIFF | |
| 2071 && boff.fill == 0 | |
| 2072 #endif | |
| 2073 ) | |
| 2074 scrolled -= curwin->w_empty_rows; | |
| 2075 } | |
| 2076 } | |
| 2077 } | |
| 2078 } | |
| 2079 | |
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2080 // curwin->w_empty_rows is larger, no need to scroll |
| 7 | 2081 if (scrolled <= 0) |
| 2082 line_count = 0; | |
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2083 // more than a screenfull, don't scroll but redraw |
| 7 | 2084 else if (used > curwin->w_height) |
| 2085 line_count = used; | |
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2086 // scroll minimal number of lines |
| 7 | 2087 else |
| 2088 { | |
| 2089 line_count = 0; | |
| 2090 #ifdef FEAT_DIFF | |
| 2091 boff.fill = curwin->w_topfill; | |
| 2092 #endif | |
| 2093 boff.lnum = curwin->w_topline - 1; | |
| 2094 for (i = 0; i < scrolled && boff.lnum < curwin->w_botline; ) | |
| 2095 { | |
| 2096 botline_forw(&boff); | |
| 2097 i += boff.height; | |
| 2098 ++line_count; | |
| 2099 } | |
|
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parents:
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diff
changeset
|
2100 if (i < scrolled) // below curwin->w_botline, don't scroll |
| 7 | 2101 line_count = 9999; |
| 2102 } | |
| 2103 | |
| 2104 /* | |
| 2105 * Scroll up if the cursor is off the bottom of the screen a bit. | |
| 2106 * Otherwise put it at 1/2 of the screen. | |
| 2107 */ | |
| 2108 if (line_count >= curwin->w_height && line_count > min_scroll) | |
| 2109 scroll_cursor_halfway(FALSE); | |
| 2110 else | |
| 2111 scrollup(line_count, TRUE); | |
| 2112 | |
| 2113 /* | |
| 2114 * If topline didn't change we need to restore w_botline and w_empty_rows | |
| 2115 * (we changed them). | |
| 2116 * If topline did change, update_screen() will set botline. | |
| 2117 */ | |
| 2118 if (curwin->w_topline == old_topline && set_topbot) | |
| 2119 { | |
| 2120 curwin->w_botline = old_botline; | |
| 2121 curwin->w_empty_rows = old_empty_rows; | |
| 2122 curwin->w_valid = old_valid; | |
| 2123 } | |
| 2124 curwin->w_valid |= VALID_TOPLINE; | |
| 2125 } | |
| 2126 | |
| 2127 /* | |
| 2128 * Recompute topline to put the cursor halfway the window | |
| 2129 * If "atend" is TRUE, also put it halfway at the end of the file. | |
| 2130 */ | |
| 2131 void | |
|
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2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2132 scroll_cursor_halfway(int atend) |
| 7 | 2133 { |
| 2134 int above = 0; | |
| 2135 linenr_T topline; | |
| 2136 #ifdef FEAT_DIFF | |
| 2137 int topfill = 0; | |
| 2138 #endif | |
| 2139 int below = 0; | |
| 2140 int used; | |
| 2141 lineoff_T loff; | |
| 2142 lineoff_T boff; | |
| 5661 | 2143 #ifdef FEAT_DIFF |
| 5653 | 2144 linenr_T old_topline = curwin->w_topline; |
| 5661 | 2145 #endif |
| 7 | 2146 |
| 2147 loff.lnum = boff.lnum = curwin->w_cursor.lnum; | |
| 2148 #ifdef FEAT_FOLDING | |
| 2149 (void)hasFolding(loff.lnum, &loff.lnum, &boff.lnum); | |
| 2150 #endif | |
| 2151 #ifdef FEAT_DIFF | |
| 2152 used = plines_nofill(loff.lnum); | |
| 2153 loff.fill = 0; | |
| 2154 boff.fill = 0; | |
| 2155 #else | |
| 2156 used = plines(loff.lnum); | |
| 2157 #endif | |
| 2158 topline = loff.lnum; | |
| 2159 while (topline > 1) | |
| 2160 { | |
|
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diff
changeset
|
2161 if (below <= above) // add a line below the cursor first |
| 7 | 2162 { |
| 2163 if (boff.lnum < curbuf->b_ml.ml_line_count) | |
| 2164 { | |
| 2165 botline_forw(&boff); | |
| 2166 used += boff.height; | |
| 2167 if (used > curwin->w_height) | |
| 2168 break; | |
| 2169 below += boff.height; | |
| 2170 } | |
| 2171 else | |
| 2172 { | |
|
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|
2173 ++below; // count a "~" line |
| 7 | 2174 if (atend) |
| 2175 ++used; | |
| 2176 } | |
| 2177 } | |
| 2178 | |
|
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|
2179 if (below > above) // add a line above the cursor |
| 7 | 2180 { |
| 2181 topline_back(&loff); | |
|
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|
2182 if (loff.height == MAXCOL) |
|
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|
2183 used = MAXCOL; |
|
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|
2184 else |
|
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changeset
|
2185 used += loff.height; |
| 7 | 2186 if (used > curwin->w_height) |
| 2187 break; | |
| 2188 above += loff.height; | |
| 2189 topline = loff.lnum; | |
| 2190 #ifdef FEAT_DIFF | |
| 2191 topfill = loff.fill; | |
| 2192 #endif | |
| 2193 } | |
| 2194 } | |
| 2195 #ifdef FEAT_FOLDING | |
| 2196 if (!hasFolding(topline, &curwin->w_topline, NULL)) | |
| 2197 #endif | |
| 2198 curwin->w_topline = topline; | |
| 2199 #ifdef FEAT_DIFF | |
| 2200 curwin->w_topfill = topfill; | |
| 5653 | 2201 if (old_topline > curwin->w_topline + curwin->w_height) |
| 2202 curwin->w_botfill = FALSE; | |
| 7 | 2203 check_topfill(curwin, FALSE); |
| 2204 #endif | |
| 2205 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2206 curwin->w_valid |= VALID_TOPLINE; | |
| 2207 } | |
| 2208 | |
| 2209 /* | |
| 2210 * Correct the cursor position so that it is in a part of the screen at least | |
|
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diff
changeset
|
2211 * 'scrolloff' lines from the top and bottom, if possible. |
| 7 | 2212 * If not possible, put it at the same position as scroll_cursor_halfway(). |
| 2213 * When called topline must be valid! | |
| 2214 */ | |
| 2215 void | |
|
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commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2216 cursor_correct(void) |
| 7 | 2217 { |
|
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changeset
|
2218 int above = 0; // screen lines above topline |
| 7 | 2219 linenr_T topline; |
|
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|
2220 int below = 0; // screen lines below botline |
| 7 | 2221 linenr_T botline; |
| 2222 int above_wanted, below_wanted; | |
|
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|
2223 linenr_T cln; // Cursor Line Number |
| 7 | 2224 int max_off; |
|
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diff
changeset
|
2225 long so = get_scrolloff_value(); |
| 7 | 2226 |
| 2227 /* | |
| 2228 * How many lines we would like to have above/below the cursor depends on | |
| 2229 * whether the first/last line of the file is on screen. | |
| 2230 */ | |
|
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changeset
|
2231 above_wanted = so; |
|
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diff
changeset
|
2232 below_wanted = so; |
| 1121 | 2233 if (mouse_dragging > 0) |
| 7 | 2234 { |
| 2235 above_wanted = mouse_dragging - 1; | |
| 2236 below_wanted = mouse_dragging - 1; | |
| 2237 } | |
| 2238 if (curwin->w_topline == 1) | |
| 2239 { | |
| 2240 above_wanted = 0; | |
| 2241 max_off = curwin->w_height / 2; | |
| 2242 if (below_wanted > max_off) | |
| 2243 below_wanted = max_off; | |
| 2244 } | |
| 2245 validate_botline(); | |
| 2246 if (curwin->w_botline == curbuf->b_ml.ml_line_count + 1 | |
|
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changeset
|
2247 && mouse_dragging == 0) |
| 7 | 2248 { |
| 2249 below_wanted = 0; | |
| 2250 max_off = (curwin->w_height - 1) / 2; | |
| 2251 if (above_wanted > max_off) | |
| 2252 above_wanted = max_off; | |
| 2253 } | |
| 2254 | |
| 2255 /* | |
| 2256 * If there are sufficient file-lines above and below the cursor, we can | |
| 2257 * return now. | |
| 2258 */ | |
| 2259 cln = curwin->w_cursor.lnum; | |
| 2260 if (cln >= curwin->w_topline + above_wanted | |
| 2261 && cln < curwin->w_botline - below_wanted | |
| 2262 #ifdef FEAT_FOLDING | |
| 2263 && !hasAnyFolding(curwin) | |
| 2264 #endif | |
| 2265 ) | |
| 2266 return; | |
| 2267 | |
| 2268 /* | |
| 2269 * Narrow down the area where the cursor can be put by taking lines from | |
| 2270 * the top and the bottom until: | |
| 2271 * - the desired context lines are found | |
| 2272 * - the lines from the top is past the lines from the bottom | |
| 2273 */ | |
| 2274 topline = curwin->w_topline; | |
| 2275 botline = curwin->w_botline - 1; | |
| 2276 #ifdef FEAT_DIFF | |
|
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changeset
|
2277 // count filler lines as context |
| 7 | 2278 above = curwin->w_topfill; |
| 2279 below = curwin->w_filler_rows; | |
| 2280 #endif | |
| 2281 while ((above < above_wanted || below < below_wanted) && topline < botline) | |
| 2282 { | |
| 2283 if (below < below_wanted && (below <= above || above >= above_wanted)) | |
| 2284 { | |
| 2285 #ifdef FEAT_FOLDING | |
| 2286 if (hasFolding(botline, &botline, NULL)) | |
| 2287 ++below; | |
| 2288 else | |
| 2289 #endif | |
| 2290 below += plines(botline); | |
| 2291 --botline; | |
| 2292 } | |
| 2293 if (above < above_wanted && (above < below || below >= below_wanted)) | |
| 2294 { | |
| 2295 #ifdef FEAT_FOLDING | |
| 2296 if (hasFolding(topline, NULL, &topline)) | |
| 2297 ++above; | |
| 2298 else | |
| 2299 #endif | |
|
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commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
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diff
changeset
|
2300 above += PLINES_NOFILL(topline); |
|
84d318257a45
commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
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parents:
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diff
changeset
|
2301 #ifdef FEAT_DIFF |
|
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|
2302 // Count filler lines below this line as context. |
| 7 | 2303 if (topline < botline) |
| 2304 above += diff_check_fill(curwin, topline + 1); | |
| 2305 #endif | |
| 2306 ++topline; | |
| 2307 } | |
| 2308 } | |
| 2309 if (topline == botline || botline == 0) | |
| 2310 curwin->w_cursor.lnum = topline; | |
| 2311 else if (topline > botline) | |
| 2312 curwin->w_cursor.lnum = botline; | |
| 2313 else | |
| 2314 { | |
| 2315 if (cln < topline && curwin->w_topline > 1) | |
| 2316 { | |
| 2317 curwin->w_cursor.lnum = topline; | |
| 2318 curwin->w_valid &= | |
| 2319 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
| 2320 } | |
| 2321 if (cln > botline && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 2322 { | |
| 2323 curwin->w_cursor.lnum = botline; | |
| 2324 curwin->w_valid &= | |
| 2325 ~(VALID_WROW|VALID_WCOL|VALID_CHEIGHT|VALID_CROW); | |
| 2326 } | |
| 2327 } | |
| 2328 curwin->w_valid |= VALID_TOPLINE; | |
| 2329 } | |
| 2330 | |
|
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commit https://github.com/vim/vim/commit/92b8b2d307e34117f146319872010b0ccc9d2713
Christian Brabandt <cb@256bit.org>
parents:
7103
diff
changeset
|
2331 static void get_scroll_overlap(lineoff_T *lp, int dir); |
| 7 | 2332 |
| 2333 /* | |
| 2334 * move screen 'count' pages up or down and update screen | |
| 2335 * | |
| 2336 * return FAIL for failure, OK otherwise | |
| 2337 */ | |
| 2338 int | |
|
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Christian Brabandt <cb@256bit.org>
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diff
changeset
|
2339 onepage(int dir, long count) |
| 7 | 2340 { |
| 2341 long n; | |
| 2342 int retval = OK; | |
| 2343 lineoff_T loff; | |
| 2344 linenr_T old_topline = curwin->w_topline; | |
|
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changeset
|
2345 long so = get_scrolloff_value(); |
| 7 | 2346 |
|
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diff
changeset
|
2347 if (curbuf->b_ml.ml_line_count == 1) // nothing to do |
| 7 | 2348 { |
| 2349 beep_flush(); | |
| 2350 return FAIL; | |
| 2351 } | |
| 2352 | |
| 2353 for ( ; count > 0; --count) | |
| 2354 { | |
| 2355 validate_botline(); | |
| 2356 /* | |
| 2357 * It's an error to move a page up when the first line is already on | |
| 2358 * the screen. It's an error to move a page down when the last line | |
| 2359 * is on the screen and the topline is 'scrolloff' lines from the | |
| 2360 * last line. | |
| 2361 */ | |
| 2362 if (dir == FORWARD | |
|
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changeset
|
2363 ? ((curwin->w_topline >= curbuf->b_ml.ml_line_count - so) |
| 7 | 2364 && curwin->w_botline > curbuf->b_ml.ml_line_count) |
| 2365 : (curwin->w_topline == 1 | |
| 2366 #ifdef FEAT_DIFF | |
| 2367 && curwin->w_topfill == | |
| 2368 diff_check_fill(curwin, curwin->w_topline) | |
| 2369 #endif | |
| 2370 )) | |
| 2371 { | |
| 2372 beep_flush(); | |
| 2373 retval = FAIL; | |
| 2374 break; | |
| 2375 } | |
| 2376 | |
| 2377 #ifdef FEAT_DIFF | |
| 2378 loff.fill = 0; | |
| 2379 #endif | |
| 2380 if (dir == FORWARD) | |
| 2381 { | |
|
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commit https://github.com/vim/vim/commit/a1f4cb93ba50ea9e40cd4b1f5592b8a6d1398660
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diff
changeset
|
2382 if (ONE_WINDOW && p_window > 0 && p_window < Rows - 1) |
| 7 | 2383 { |
|
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changeset
|
2384 // Vi compatible scrolling |
| 164 | 2385 if (p_window <= 2) |
| 2386 ++curwin->w_topline; | |
| 2387 else | |
| 2388 curwin->w_topline += p_window - 2; | |
| 2389 if (curwin->w_topline > curbuf->b_ml.ml_line_count) | |
| 2390 curwin->w_topline = curbuf->b_ml.ml_line_count; | |
| 2391 curwin->w_cursor.lnum = curwin->w_topline; | |
| 2392 } | |
| 2393 else if (curwin->w_botline > curbuf->b_ml.ml_line_count) | |
| 2394 { | |
|
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diff
changeset
|
2395 // at end of file |
| 7 | 2396 curwin->w_topline = curbuf->b_ml.ml_line_count; |
| 2397 #ifdef FEAT_DIFF | |
| 2398 curwin->w_topfill = 0; | |
| 2399 #endif | |
| 2400 curwin->w_valid &= ~(VALID_WROW|VALID_CROW); | |
| 2401 } | |
| 2402 else | |
| 2403 { | |
|
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|
2404 // For the overlap, start with the line just below the window |
|
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changeset
|
2405 // and go upwards. |
| 7 | 2406 loff.lnum = curwin->w_botline; |
| 2407 #ifdef FEAT_DIFF | |
| 2408 loff.fill = diff_check_fill(curwin, loff.lnum) | |
| 2409 - curwin->w_filler_rows; | |
| 2410 #endif | |
| 2411 get_scroll_overlap(&loff, -1); | |
| 2412 curwin->w_topline = loff.lnum; | |
| 2413 #ifdef FEAT_DIFF | |
| 2414 curwin->w_topfill = loff.fill; | |
| 2415 check_topfill(curwin, FALSE); | |
| 2416 #endif | |
| 2417 curwin->w_cursor.lnum = curwin->w_topline; | |
| 2418 curwin->w_valid &= ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW| | |
| 2419 VALID_CROW|VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2420 } | |
| 2421 } | |
|
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changeset
|
2422 else // dir == BACKWARDS |
| 7 | 2423 { |
| 2424 #ifdef FEAT_DIFF | |
| 2425 if (curwin->w_topline == 1) | |
| 2426 { | |
|
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changeset
|
2427 // Include max number of filler lines |
| 7 | 2428 max_topfill(); |
| 2429 continue; | |
| 2430 } | |
| 2431 #endif | |
|
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Christian Brabandt <cb@256bit.org>
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changeset
|
2432 if (ONE_WINDOW && p_window > 0 && p_window < Rows - 1) |
| 164 | 2433 { |
|
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|
2434 // Vi compatible scrolling (sort of) |
| 164 | 2435 if (p_window <= 2) |
| 2436 --curwin->w_topline; | |
| 2437 else | |
| 2438 curwin->w_topline -= p_window - 2; | |
| 2439 if (curwin->w_topline < 1) | |
| 2440 curwin->w_topline = 1; | |
| 2441 curwin->w_cursor.lnum = curwin->w_topline + p_window - 1; | |
| 2442 if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count) | |
| 2443 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; | |
| 2444 continue; | |
| 2445 } | |
| 2446 | |
|
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changeset
|
2447 // Find the line at the top of the window that is going to be the |
|
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|
2448 // line at the bottom of the window. Make sure this results in |
|
80b40bd5ec1a
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changeset
|
2449 // the same line as before doing CTRL-F. |
| 7 | 2450 loff.lnum = curwin->w_topline - 1; |
| 2451 #ifdef FEAT_DIFF | |
| 2452 loff.fill = diff_check_fill(curwin, loff.lnum + 1) | |
| 2453 - curwin->w_topfill; | |
| 2454 #endif | |
| 2455 get_scroll_overlap(&loff, 1); | |
| 2456 | |
| 2457 if (loff.lnum >= curbuf->b_ml.ml_line_count) | |
| 2458 { | |
| 2459 loff.lnum = curbuf->b_ml.ml_line_count; | |
| 2460 #ifdef FEAT_DIFF | |
| 2461 loff.fill = 0; | |
| 2462 } | |
| 2463 else | |
| 2464 { | |
| 2465 botline_topline(&loff); | |
| 2466 #endif | |
| 2467 } | |
| 2468 curwin->w_cursor.lnum = loff.lnum; | |
| 2469 | |
|
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Bram Moolenaar <Bram@vim.org>
parents:
18892
diff
changeset
|
2470 // Find the line just above the new topline to get the right line |
|
80b40bd5ec1a
patch 8.2.0026: still some /* */ comments
Bram Moolenaar <Bram@vim.org>
parents:
18892
diff
changeset
|
2471 // at the bottom of the window. |
| 7 | 2472 n = 0; |
| 2473 while (n <= curwin->w_height && loff.lnum >= 1) | |
| 2474 { | |
| 2475 topline_back(&loff); | |
|
2082
8ca3c9ad0bee
updated for version 7.2.366
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parents:
2070
diff
changeset
|
2476 if (loff.height == MAXCOL) |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2477 n = MAXCOL; |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2478 else |
|
8ca3c9ad0bee
updated for version 7.2.366
Bram Moolenaar <bram@zimbu.org>
parents:
2070
diff
changeset
|
2479 n += loff.height; |
| 7 | 2480 } |
|
18931
80b40bd5ec1a
patch 8.2.0026: still some /* */ comments
Bram Moolenaar <Bram@vim.org>
parents:
18892
diff
changeset
|
2481 if (loff.lnum < 1) // at begin of file |
| 7 | 2482 { |
| 2483 curwin->w_topline = 1; | |
| 2484 #ifdef FEAT_DIFF | |
| 2485 max_topfill(); | |
| 2486 #endif | |
| 2487 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 2488 } | |
| 2489 else | |
| 2490 { | |
|
18931
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patch 8.2.0026: still some /* */ comments
Bram Moolenaar <Bram@vim.org>
parents:
18892
diff
changeset
|
2491 // Go two lines forward again. |
| 7 | 2492 #ifdef FEAT_DIFF |
| 2493 topline_botline(&loff); | |
| 2494 #endif | |
| 2495 botline_forw(&loff); | |
| 2496 botline_forw(&loff); | |
| 2497 #ifdef FEAT_DIFF | |
| 2498 botline_topline(&loff); | |
| 2499 #endif | |
| 2500 #ifdef FEAT_FOLDING | |
|
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patch 8.2.0026: still some /* */ comments
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
2501 // We're at the wrong end of a fold now. |
| 7 | 2502 (void)hasFolding(loff.lnum, &loff.lnum, NULL); |
| 2503 #endif | |
| 2504 | |
|
18931
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parents:
18892
diff
changeset
|
2505 // Always scroll at least one line. Avoid getting stuck on |
|
80b40bd5ec1a
patch 8.2.0026: still some /* */ comments
Bram Moolenaar <Bram@vim.org>
parents:
18892
diff
changeset
|
2506 // very long lines. |
| 7 | 2507 if (loff.lnum >= curwin->w_topline |
| 2508 #ifdef FEAT_DIFF | |
| 2509 && (loff.lnum > curwin->w_topline | |
| 2510 || loff.fill >= curwin->w_topfill) | |
| 2511 #endif | |
| 2512 ) | |
| 2513 { | |
| 2514 #ifdef FEAT_DIFF | |
|
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patch 8.2.0026: still some /* */ comments
Bram Moolenaar <Bram@vim.org>
parents:
18892
diff
changeset
|
2515 // First try using the maximum number of filler lines. If |
|
80b40bd5ec1a
patch 8.2.0026: still some /* */ comments
Bram Moolenaar <Bram@vim.org>
parents:
18892
diff
changeset
|
2516 // that's not enough, backup one line. |
| 7 | 2517 loff.fill = curwin->w_topfill; |
| 2518 if (curwin->w_topfill < diff_check_fill(curwin, | |
| 2519 curwin->w_topline)) | |
| 2520 max_topfill(); | |
| 2521 if (curwin->w_topfill == loff.fill) | |
| 2522 #endif | |
| 2523 { | |
| 2524 --curwin->w_topline; | |
| 2525 #ifdef FEAT_DIFF | |
| 2526 curwin->w_topfill = 0; | |
| 2527 #endif | |
| 2528 } | |
| 2529 comp_botline(curwin); | |
| 2530 curwin->w_cursor.lnum = curwin->w_botline - 1; | |
| 5764 | 2531 curwin->w_valid &= |
| 2532 ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW|VALID_CROW); | |
| 7 | 2533 } |
| 2534 else | |
| 2535 { | |
| 2536 curwin->w_topline = loff.lnum; | |
| 2537 #ifdef FEAT_DIFF | |
| 2538 curwin->w_topfill = loff.fill; | |
| 2539 check_topfill(curwin, FALSE); | |
| 2540 #endif | |
| 2541 curwin->w_valid &= ~(VALID_WROW|VALID_CROW|VALID_BOTLINE); | |
| 2542 } | |
| 2543 } | |
| 2544 } | |
| 2545 } | |
| 2546 #ifdef FEAT_FOLDING | |
| 2547 foldAdjustCursor(); | |
| 2548 #endif | |
| 2549 cursor_correct(); | |
|
10102
b80ad55d62d8
commit https://github.com/vim/vim/commit/bc54f3f3fed4dc3556df8c46cee6739d211b0eb2
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
2550 check_cursor_col(); |
| 161 | 2551 if (retval == OK) |
| 2552 beginline(BL_SOL | BL_FIX); | |
| 7 | 2553 curwin->w_valid &= ~(VALID_WCOL|VALID_WROW|VALID_VIRTCOL); |
| 2554 | |
|
14317
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Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2555 if (retval == OK && dir == FORWARD) |
| 7 | 2556 { |
|
14317
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
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parents:
13384
diff
changeset
|
2557 // Avoid the screen jumping up and down when 'scrolloff' is non-zero. |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2558 // But make sure we scroll at least one line (happens with mix of long |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2559 // wrapping lines and non-wrapping line). |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
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parents:
13384
diff
changeset
|
2560 if (check_top_offset()) |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2561 { |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2562 scroll_cursor_top(1, FALSE); |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2563 if (curwin->w_topline <= old_topline |
| 7 | 2564 && old_topline < curbuf->b_ml.ml_line_count) |
|
14317
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2565 { |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
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parents:
13384
diff
changeset
|
2566 curwin->w_topline = old_topline + 1; |
| 7 | 2567 #ifdef FEAT_FOLDING |
|
14317
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patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2568 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
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parents:
13384
diff
changeset
|
2569 #endif |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
2570 } |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2571 } |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
2572 #ifdef FEAT_FOLDING |
|
1bc96dbb5498
patch 8.1.0174: after paging up and down fold line is wrong
Christian Brabandt <cb@256bit.org>
parents:
13384
diff
changeset
|
2573 else if (curwin->w_botline > curbuf->b_ml.ml_line_count) |
| 7 | 2574 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); |
| 2575 #endif | |
| 2576 } | |
| 2577 | |
| 2578 redraw_later(VALID); | |
| 2579 return retval; | |
| 2580 } | |
| 2581 | |
| 2582 /* | |
| 2583 * Decide how much overlap to use for page-up or page-down scrolling. | |
| 2584 * This is symmetric, so that doing both keeps the same lines displayed. | |
| 2585 * Three lines are examined: | |
| 2586 * | |
| 2587 * before CTRL-F after CTRL-F / before CTRL-B | |
| 2588 * etc. l1 | |
| 2589 * l1 last but one line ------------ | |
| 2590 * l2 last text line l2 top text line | |
| 2591 * ------------- l3 second text line | |
| 2592 * l3 etc. | |
| 2593 */ | |
| 2594 static void | |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2595 get_scroll_overlap(lineoff_T *lp, int dir) |
| 7 | 2596 { |
| 2597 int h1, h2, h3, h4; | |
| 2598 int min_height = curwin->w_height - 2; | |
| 2599 lineoff_T loff0, loff1, loff2; | |
| 2600 | |
| 2601 #ifdef FEAT_DIFF | |
| 2602 if (lp->fill > 0) | |
| 2603 lp->height = 1; | |
| 2604 else | |
| 2605 lp->height = plines_nofill(lp->lnum); | |
| 2606 #else | |
| 2607 lp->height = plines(lp->lnum); | |
| 2608 #endif | |
| 2609 h1 = lp->height; | |
| 2610 if (h1 > min_height) | |
|
18931
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Bram Moolenaar <Bram@vim.org>
parents:
18892
diff
changeset
|
2611 return; // no overlap |
| 7 | 2612 |
| 2613 loff0 = *lp; | |
| 2614 if (dir > 0) | |
| 2615 botline_forw(lp); | |
| 2616 else | |
| 2617 topline_back(lp); | |
| 2618 h2 = lp->height; | |
| 3968 | 2619 if (h2 == MAXCOL || h2 + h1 > min_height) |
| 7 | 2620 { |
|
18931
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Bram Moolenaar <Bram@vim.org>
parents:
18892
diff
changeset
|
2621 *lp = loff0; // no overlap |
| 7 | 2622 return; |
| 2623 } | |
| 2624 | |
| 2625 loff1 = *lp; | |
| 2626 if (dir > 0) | |
| 2627 botline_forw(lp); | |
| 2628 else | |
| 2629 topline_back(lp); | |
| 2630 h3 = lp->height; | |
| 3968 | 2631 if (h3 == MAXCOL || h3 + h2 > min_height) |
| 7 | 2632 { |
|
18931
80b40bd5ec1a
patch 8.2.0026: still some /* */ comments
Bram Moolenaar <Bram@vim.org>
parents:
18892
diff
changeset
|
2633 *lp = loff0; // no overlap |
| 7 | 2634 return; |
| 2635 } | |
| 2636 | |
| 2637 loff2 = *lp; | |
| 2638 if (dir > 0) | |
| 2639 botline_forw(lp); | |
| 2640 else | |
| 2641 topline_back(lp); | |
| 2642 h4 = lp->height; | |
| 3968 | 2643 if (h4 == MAXCOL || h4 + h3 + h2 > min_height || h3 + h2 + h1 > min_height) |
|
18931
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Bram Moolenaar <Bram@vim.org>
parents:
18892
diff
changeset
|
2644 *lp = loff1; // 1 line overlap |
| 7 | 2645 else |
|
18931
80b40bd5ec1a
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Bram Moolenaar <Bram@vim.org>
parents:
18892
diff
changeset
|
2646 *lp = loff2; // 2 lines overlap |
| 7 | 2647 return; |
| 2648 } | |
| 2649 | |
| 2650 /* | |
| 2651 * Scroll 'scroll' lines up or down. | |
| 2652 */ | |
| 2653 void | |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
Christian Brabandt <cb@256bit.org>
parents:
7803
diff
changeset
|
2654 halfpage(int flag, linenr_T Prenum) |
| 7 | 2655 { |
| 2656 long scrolled = 0; | |
| 2657 int i; | |
| 2658 int n; | |
| 2659 int room; | |
| 2660 | |
| 2661 if (Prenum) | |
| 2662 curwin->w_p_scr = (Prenum > curwin->w_height) ? | |
| 2663 curwin->w_height : Prenum; | |
| 2664 n = (curwin->w_p_scr <= curwin->w_height) ? | |
| 2665 curwin->w_p_scr : curwin->w_height; | |
| 2666 | |
|
11258
84f71a8a5f2c
patch 8.0.0515: ml_get errors in silent Ex mode
Christian Brabandt <cb@256bit.org>
parents:
11121
diff
changeset
|
2667 update_topline(); |
| 7 | 2668 validate_botline(); |
| 2669 room = curwin->w_empty_rows; | |
| 2670 #ifdef FEAT_DIFF | |
| 2671 room += curwin->w_filler_rows; | |
| 2672 #endif | |
| 2673 if (flag) | |
| 2674 { | |
| 2675 /* | |
| 2676 * scroll the text up | |
| 2677 */ | |
| 2678 while (n > 0 && curwin->w_botline <= curbuf->b_ml.ml_line_count) | |
| 2679 { | |
| 2680 #ifdef FEAT_DIFF | |
| 2681 if (curwin->w_topfill > 0) | |
| 2682 { | |
| 2683 i = 1; | |
| 2684 if (--n < 0 && scrolled > 0) | |
| 2685 break; | |
| 2686 --curwin->w_topfill; | |
| 2687 } | |
| 2688 else | |
| 2689 #endif | |
| 2690 { | |
|
7103
84d318257a45
commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2691 i = PLINES_NOFILL(curwin->w_topline); |
| 7 | 2692 n -= i; |
| 2693 if (n < 0 && scrolled > 0) | |
| 2694 break; | |
| 2695 #ifdef FEAT_FOLDING | |
| 2696 (void)hasFolding(curwin->w_topline, NULL, &curwin->w_topline); | |
| 2697 #endif | |
| 2698 ++curwin->w_topline; | |
| 2699 #ifdef FEAT_DIFF | |
| 2700 curwin->w_topfill = diff_check_fill(curwin, curwin->w_topline); | |
| 2701 #endif | |
| 2702 | |
| 2703 if (curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
| 2704 { | |
| 2705 ++curwin->w_cursor.lnum; | |
| 2706 curwin->w_valid &= | |
| 2707 ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
| 2708 } | |
| 2709 } | |
| 2710 curwin->w_valid &= ~(VALID_CROW|VALID_WROW); | |
| 2711 scrolled += i; | |
| 2712 | |
| 2713 /* | |
| 2714 * Correct w_botline for changed w_topline. | |
| 2715 * Won't work when there are filler lines. | |
| 2716 */ | |
| 2717 #ifdef FEAT_DIFF | |
| 2718 if (curwin->w_p_diff) | |
| 2719 curwin->w_valid &= ~(VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2720 else | |
| 2721 #endif | |
| 2722 { | |
| 2723 room += i; | |
| 2724 do | |
| 2725 { | |
| 2726 i = plines(curwin->w_botline); | |
| 2727 if (i > room) | |
| 2728 break; | |
| 2729 #ifdef FEAT_FOLDING | |
| 2730 (void)hasFolding(curwin->w_botline, NULL, | |
| 2731 &curwin->w_botline); | |
| 2732 #endif | |
| 2733 ++curwin->w_botline; | |
| 2734 room -= i; | |
| 2735 } while (curwin->w_botline <= curbuf->b_ml.ml_line_count); | |
| 2736 } | |
| 2737 } | |
| 2738 | |
| 2739 /* | |
| 2740 * When hit bottom of the file: move cursor down. | |
| 2741 */ | |
| 2742 if (n > 0) | |
| 2743 { | |
| 2744 # ifdef FEAT_FOLDING | |
| 2745 if (hasAnyFolding(curwin)) | |
| 2746 { | |
| 2747 while (--n >= 0 | |
| 2748 && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) | |
| 2749 { | |
| 2750 (void)hasFolding(curwin->w_cursor.lnum, NULL, | |
| 2751 &curwin->w_cursor.lnum); | |
| 2752 ++curwin->w_cursor.lnum; | |
| 2753 } | |
| 2754 } | |
| 2755 else | |
| 2756 # endif | |
| 2757 curwin->w_cursor.lnum += n; | |
| 2758 check_cursor_lnum(); | |
| 2759 } | |
| 2760 } | |
| 2761 else | |
| 2762 { | |
| 2763 /* | |
| 2764 * scroll the text down | |
| 2765 */ | |
| 2766 while (n > 0 && curwin->w_topline > 1) | |
| 2767 { | |
| 2768 #ifdef FEAT_DIFF | |
| 2769 if (curwin->w_topfill < diff_check_fill(curwin, curwin->w_topline)) | |
| 2770 { | |
| 2771 i = 1; | |
|
16042
7952be788a49
patch 8.1.1026: unused condition
Bram Moolenaar <Bram@vim.org>
parents:
15713
diff
changeset
|
2772 --n; |
| 7 | 2773 ++curwin->w_topfill; |
| 2774 } | |
| 2775 else | |
| 2776 #endif | |
| 2777 { | |
|
7103
84d318257a45
commit https://github.com/vim/vim/commit/43335ea394fe247132b9701c55cccf51e6c36425
Christian Brabandt <cb@256bit.org>
parents:
7088
diff
changeset
|
2778 i = PLINES_NOFILL(curwin->w_topline - 1); |
| 7 | 2779 n -= i; |
| 2780 if (n < 0 && scrolled > 0) | |
| 2781 break; | |
| 2782 --curwin->w_topline; | |
| 2783 #ifdef FEAT_FOLDING | |
| 2784 (void)hasFolding(curwin->w_topline, &curwin->w_topline, NULL); | |
| 2785 #endif | |
| 2786 #ifdef FEAT_DIFF | |
| 2787 curwin->w_topfill = 0; | |
| 2788 #endif | |
| 2789 } | |
| 2790 curwin->w_valid &= ~(VALID_CROW|VALID_WROW| | |
| 2791 VALID_BOTLINE|VALID_BOTLINE_AP); | |
| 2792 scrolled += i; | |
| 2793 if (curwin->w_cursor.lnum > 1) | |
| 2794 { | |
| 2795 --curwin->w_cursor.lnum; | |
| 2796 curwin->w_valid &= ~(VALID_VIRTCOL|VALID_CHEIGHT|VALID_WCOL); | |
| 2797 } | |
| 2798 } | |
|
16042
7952be788a49
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Bram Moolenaar <Bram@vim.org>
parents:
15713
diff
changeset
|
2799 |
| 7 | 2800 /* |
| 2801 * When hit top of the file: move cursor up. | |
| 2802 */ | |
| 2803 if (n > 0) | |
| 2804 { | |
| 2805 if (curwin->w_cursor.lnum <= (linenr_T)n) | |
| 2806 curwin->w_cursor.lnum = 1; | |
| 2807 else | |
| 2808 # ifdef FEAT_FOLDING | |
| 2809 if (hasAnyFolding(curwin)) | |
| 2810 { | |
| 2811 while (--n >= 0 && curwin->w_cursor.lnum > 1) | |
| 2812 { | |
| 2813 --curwin->w_cursor.lnum; | |
| 2814 (void)hasFolding(curwin->w_cursor.lnum, | |
| 2815 &curwin->w_cursor.lnum, NULL); | |
| 2816 } | |
| 2817 } | |
| 2818 else | |
| 2819 # endif | |
| 2820 curwin->w_cursor.lnum -= n; | |
| 2821 } | |
| 2822 } | |
| 2823 # ifdef FEAT_FOLDING | |
|
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parents:
18892
diff
changeset
|
2824 // Move cursor to first line of closed fold. |
| 7 | 2825 foldAdjustCursor(); |
| 2826 # endif | |
| 2827 #ifdef FEAT_DIFF | |
| 2828 check_topfill(curwin, !flag); | |
| 2829 #endif | |
| 2830 cursor_correct(); | |
| 2831 beginline(BL_SOL | BL_FIX); | |
| 2832 redraw_later(VALID); | |
| 2833 } | |
|
2250
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2834 |
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|
2835 void |
|
7829
2a8d6b2dd925
commit https://github.com/vim/vim/commit/9b57814db13c29ecb08260b36923c0e1c8a373a9
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diff
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|
2836 do_check_cursorbind(void) |
|
2250
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2837 { |
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|
2838 linenr_T line = curwin->w_cursor.lnum; |
| 3415 | 2839 colnr_T col = curwin->w_cursor.col; |
| 2840 colnr_T coladd = curwin->w_cursor.coladd; | |
| 3433 | 2841 colnr_T curswant = curwin->w_curswant; |
| 2842 int set_curswant = curwin->w_set_curswant; | |
|
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diff
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|
2843 win_T *old_curwin = curwin; |
|
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Add the conceal patch from Vince Negri.
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|
2844 buf_T *old_curbuf = curbuf; |
| 2693 | 2845 int restart_edit_save; |
|
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|
2846 int old_VIsual_select = VIsual_select; |
|
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|
2847 int old_VIsual_active = VIsual_active; |
|
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2848 |
|
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|
2849 /* |
|
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|
2850 * loop through the cursorbound windows |
|
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Add the conceal patch from Vince Negri.
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|
2851 */ |
|
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Add the conceal patch from Vince Negri.
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|
2852 VIsual_select = VIsual_active = 0; |
|
9649
fd9727ae3c49
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|
2853 FOR_ALL_WINDOWS(curwin) |
|
2250
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2854 { |
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|
2855 curbuf = curwin->w_buffer; |
|
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|
2856 // skip original window and windows with 'noscrollbind' |
|
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|
2857 if (curwin != old_curwin && curwin->w_p_crb) |
|
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|
2858 { |
|
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|
2859 # ifdef FEAT_DIFF |
|
1bac28a53fae
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|
2860 if (curwin->w_p_diff) |
|
10295
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10102
diff
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|
2861 curwin->w_cursor.lnum = |
|
d0b74b18e4b5
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diff
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|
2862 diff_get_corresponding_line(old_curbuf, line); |
|
2250
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2863 else |
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|
2864 # endif |
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2865 curwin->w_cursor.lnum = line; |
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|
2866 curwin->w_cursor.col = col; |
| 3415 | 2867 curwin->w_cursor.coladd = coladd; |
| 3433 | 2868 curwin->w_curswant = curswant; |
| 2869 curwin->w_set_curswant = set_curswant; | |
|
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2870 |
|
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|
2871 // Make sure the cursor is in a valid position. Temporarily set |
|
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2872 // "restart_edit" to allow the cursor to be beyond the EOL. |
| 2693 | 2873 restart_edit_save = restart_edit; |
| 2874 restart_edit = TRUE; | |
|
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2875 check_cursor(); |
|
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|
2876 # ifdef FEAT_SYN_HL |
|
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|
2877 if (curwin->w_p_cul || curwin->w_p_cuc) |
|
10583
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|
2878 validate_cursor(); |
|
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|
2879 # endif |
| 2693 | 2880 restart_edit = restart_edit_save; |
|
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2881 // Correct cursor for multi-byte character. |
|
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2882 if (has_mbyte) |
|
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2883 mb_adjust_cursor(); |
|
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2884 redraw_later(VALID); |
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2885 |
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|
2886 // Only scroll when 'scrollbind' hasn't done this. |
| 2688 | 2887 if (!curwin->w_p_scb) |
| 2888 update_topline(); | |
|
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2889 curwin->w_redr_status = TRUE; |
|
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2890 } |
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2891 } |
|
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2892 |
|
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2893 /* |
|
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2894 * reset current-window |
|
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2895 */ |
|
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2896 VIsual_select = old_VIsual_select; |
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2897 VIsual_active = old_VIsual_active; |
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2898 curwin = old_curwin; |
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2899 curbuf = old_curbuf; |
|
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2900 } |