| 1 | /* Window creation, deletion and examination for GNU Emacs. |
| 2 | Does not include redisplay. |
| 3 | Copyright (C) 1985-1987, 1993-1998, 2000-2011 |
| 4 | Free Software Foundation, Inc. |
| 5 | |
| 6 | This file is part of GNU Emacs. |
| 7 | |
| 8 | GNU Emacs is free software: you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation, either version 3 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | GNU Emacs is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 20 | |
| 21 | #include <config.h> |
| 22 | #include <stdio.h> |
| 23 | #include <setjmp.h> |
| 24 | |
| 25 | #include "lisp.h" |
| 26 | #include "buffer.h" |
| 27 | #include "keyboard.h" |
| 28 | #include "keymap.h" |
| 29 | #include "frame.h" |
| 30 | #include "window.h" |
| 31 | #include "commands.h" |
| 32 | #include "indent.h" |
| 33 | #include "termchar.h" |
| 34 | #include "disptab.h" |
| 35 | #include "dispextern.h" |
| 36 | #include "blockinput.h" |
| 37 | #include "intervals.h" |
| 38 | #include "termhooks.h" /* For FRAME_TERMINAL. */ |
| 39 | |
| 40 | #ifdef HAVE_X_WINDOWS |
| 41 | #include "xterm.h" |
| 42 | #endif /* HAVE_X_WINDOWS */ |
| 43 | #ifdef WINDOWSNT |
| 44 | #include "w32term.h" |
| 45 | #endif |
| 46 | #ifdef MSDOS |
| 47 | #include "msdos.h" |
| 48 | #endif |
| 49 | #ifdef HAVE_NS |
| 50 | #include "nsterm.h" |
| 51 | #endif |
| 52 | |
| 53 | Lisp_Object Qwindowp, Qwindow_live_p; |
| 54 | static Lisp_Object Qwindow_configuration_p, Qrecord_window_buffer; |
| 55 | static Lisp_Object Qwindow_deletable_p, Qdelete_window, Qdisplay_buffer; |
| 56 | static Lisp_Object Qreplace_buffer_in_windows, Qget_mru_window; |
| 57 | static Lisp_Object Qwindow_resize_root_window, Qwindow_resize_root_window_vertically; |
| 58 | static Lisp_Object Qscroll_up, Qscroll_down, Qscroll_command; |
| 59 | static Lisp_Object Qsafe, Qabove, Qbelow; |
| 60 | static Lisp_Object Qauto_buffer_name; |
| 61 | |
| 62 | static int displayed_window_lines (struct window *); |
| 63 | static struct window *decode_window (Lisp_Object); |
| 64 | static int count_windows (struct window *); |
| 65 | static int get_leaf_windows (struct window *, struct window **, int); |
| 66 | static void window_scroll (Lisp_Object, int, int, int); |
| 67 | static void window_scroll_pixel_based (Lisp_Object, int, int, int); |
| 68 | static void window_scroll_line_based (Lisp_Object, int, int, int); |
| 69 | static int freeze_window_start (struct window *, void *); |
| 70 | static Lisp_Object window_list (void); |
| 71 | static int add_window_to_list (struct window *, void *); |
| 72 | static int candidate_window_p (Lisp_Object, Lisp_Object, Lisp_Object, |
| 73 | Lisp_Object); |
| 74 | static Lisp_Object next_window (Lisp_Object, Lisp_Object, |
| 75 | Lisp_Object, int); |
| 76 | static void decode_next_window_args (Lisp_Object *, Lisp_Object *, |
| 77 | Lisp_Object *); |
| 78 | static void foreach_window (struct frame *, |
| 79 | int (* fn) (struct window *, void *), |
| 80 | void *); |
| 81 | static int foreach_window_1 (struct window *, |
| 82 | int (* fn) (struct window *, void *), |
| 83 | void *); |
| 84 | static Lisp_Object window_list_1 (Lisp_Object, Lisp_Object, Lisp_Object); |
| 85 | static int window_resize_check (struct window *, int); |
| 86 | static void window_resize_apply (struct window *, int); |
| 87 | static Lisp_Object select_window (Lisp_Object, Lisp_Object, int); |
| 88 | |
| 89 | /* This is the window in which the terminal's cursor should |
| 90 | be left when nothing is being done with it. This must |
| 91 | always be a leaf window, and its buffer is selected by |
| 92 | the top level editing loop at the end of each command. |
| 93 | |
| 94 | This value is always the same as |
| 95 | FRAME_SELECTED_WINDOW (selected_frame). */ |
| 96 | Lisp_Object selected_window; |
| 97 | |
| 98 | /* A list of all windows for use by next_window and Fwindow_list. |
| 99 | Functions creating or deleting windows should invalidate this cache |
| 100 | by setting it to nil. */ |
| 101 | Lisp_Object Vwindow_list; |
| 102 | |
| 103 | /* The mini-buffer window of the selected frame. |
| 104 | Note that you cannot test for mini-bufferness of an arbitrary window |
| 105 | by comparing against this; but you can test for mini-bufferness of |
| 106 | the selected window. */ |
| 107 | Lisp_Object minibuf_window; |
| 108 | |
| 109 | /* Non-nil means it is the window whose mode line should be |
| 110 | shown as the selected window when the minibuffer is selected. */ |
| 111 | Lisp_Object minibuf_selected_window; |
| 112 | |
| 113 | /* Hook run at end of temp_output_buffer_show. */ |
| 114 | static Lisp_Object Qtemp_buffer_show_hook; |
| 115 | |
| 116 | /* Incremented for each window created. */ |
| 117 | static int sequence_number; |
| 118 | |
| 119 | /* Nonzero after init_window_once has finished. */ |
| 120 | static int window_initialized; |
| 121 | |
| 122 | /* Hook to run when window config changes. */ |
| 123 | static Lisp_Object Qwindow_configuration_change_hook; |
| 124 | |
| 125 | /* Used by the function window_scroll_pixel_based */ |
| 126 | static int window_scroll_pixel_based_preserve_x; |
| 127 | static int window_scroll_pixel_based_preserve_y; |
| 128 | |
| 129 | /* Same for window_scroll_line_based. */ |
| 130 | static int window_scroll_preserve_hpos; |
| 131 | static int window_scroll_preserve_vpos; |
| 132 | \f |
| 133 | static struct window * |
| 134 | decode_window (register Lisp_Object window) |
| 135 | { |
| 136 | if (NILP (window)) |
| 137 | return XWINDOW (selected_window); |
| 138 | |
| 139 | CHECK_LIVE_WINDOW (window); |
| 140 | return XWINDOW (window); |
| 141 | } |
| 142 | |
| 143 | static struct window * |
| 144 | decode_any_window (register Lisp_Object window) |
| 145 | { |
| 146 | if (NILP (window)) |
| 147 | return XWINDOW (selected_window); |
| 148 | |
| 149 | CHECK_WINDOW (window); |
| 150 | return XWINDOW (window); |
| 151 | } |
| 152 | |
| 153 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, |
| 154 | doc: /* Return t if OBJECT is a window and nil otherwise. */) |
| 155 | (Lisp_Object object) |
| 156 | { |
| 157 | return WINDOWP (object) ? Qt : Qnil; |
| 158 | } |
| 159 | |
| 160 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
| 161 | doc: /* Return t if OBJECT is a live window and nil otherwise. |
| 162 | A live window is a window that displays a buffer. */) |
| 163 | (Lisp_Object object) |
| 164 | { |
| 165 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
| 166 | } |
| 167 | \f |
| 168 | /* Frames and windows. */ |
| 169 | DEFUN ("window-frame", Fwindow_frame, Swindow_frame, 1, 1, 0, |
| 170 | doc: /* Return the frame that window WINDOW is on. |
| 171 | WINDOW can be any window and defaults to the selected one. */) |
| 172 | (Lisp_Object window) |
| 173 | { |
| 174 | return decode_any_window (window)->frame; |
| 175 | } |
| 176 | |
| 177 | DEFUN ("frame-root-window", Fframe_root_window, Sframe_root_window, 0, 1, 0, |
| 178 | doc: /* Return the root window of FRAME_OR_WINDOW. |
| 179 | If omitted, FRAME_OR_WINDOW defaults to the currently selected frame. |
| 180 | Else if FRAME_OR_WINDOW denotes any window, return the root window of |
| 181 | that window's frame. If FRAME_OR_WINDOW denotes a live frame, return |
| 182 | the root window of that frame. */) |
| 183 | (Lisp_Object frame_or_window) |
| 184 | { |
| 185 | Lisp_Object window; |
| 186 | |
| 187 | if (NILP (frame_or_window)) |
| 188 | window = SELECTED_FRAME ()->root_window; |
| 189 | else if (WINDOWP (frame_or_window)) |
| 190 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; |
| 191 | else |
| 192 | { |
| 193 | CHECK_LIVE_FRAME (frame_or_window); |
| 194 | window = XFRAME (frame_or_window)->root_window; |
| 195 | } |
| 196 | |
| 197 | return window; |
| 198 | } |
| 199 | |
| 200 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
| 201 | doc: /* Return the window used now for minibuffers. |
| 202 | If the optional argument FRAME is specified, return the minibuffer window |
| 203 | used by that frame. */) |
| 204 | (Lisp_Object frame) |
| 205 | { |
| 206 | if (NILP (frame)) |
| 207 | frame = selected_frame; |
| 208 | CHECK_LIVE_FRAME (frame); |
| 209 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
| 210 | } |
| 211 | |
| 212 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, |
| 213 | Swindow_minibuffer_p, 0, 1, 0, |
| 214 | doc: /* Return non-nil if WINDOW is a minibuffer window. |
| 215 | WINDOW can be any window and defaults to the selected one. */) |
| 216 | (Lisp_Object window) |
| 217 | { |
| 218 | return MINI_WINDOW_P (decode_any_window (window)) ? Qt : Qnil; |
| 219 | } |
| 220 | |
| 221 | /* Don't move this to window.el - this must be a safe routine. */ |
| 222 | DEFUN ("frame-first-window", Fframe_first_window, Sframe_first_window, 0, 1, 0, |
| 223 | doc: /* Return the topmost, leftmost live window on FRAME_OR_WINDOW. |
| 224 | If omitted, FRAME_OR_WINDOW defaults to the currently selected frame. |
| 225 | Else if FRAME_OR_WINDOW denotes any window, return the first window of |
| 226 | that window's frame. If FRAME_OR_WINDOW denotes a live frame, return |
| 227 | the first window of that frame. */) |
| 228 | (Lisp_Object frame_or_window) |
| 229 | { |
| 230 | Lisp_Object window; |
| 231 | |
| 232 | if (NILP (frame_or_window)) |
| 233 | window = SELECTED_FRAME ()->root_window; |
| 234 | else if (WINDOWP (frame_or_window)) |
| 235 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; |
| 236 | else |
| 237 | { |
| 238 | CHECK_LIVE_FRAME (frame_or_window); |
| 239 | window = XFRAME (frame_or_window)->root_window; |
| 240 | } |
| 241 | |
| 242 | while (NILP (XWINDOW (window)->buffer)) |
| 243 | { |
| 244 | if (! NILP (XWINDOW (window)->hchild)) |
| 245 | window = XWINDOW (window)->hchild; |
| 246 | else if (! NILP (XWINDOW (window)->vchild)) |
| 247 | window = XWINDOW (window)->vchild; |
| 248 | else |
| 249 | abort (); |
| 250 | } |
| 251 | |
| 252 | return window; |
| 253 | } |
| 254 | |
| 255 | DEFUN ("frame-selected-window", Fframe_selected_window, |
| 256 | Sframe_selected_window, 0, 1, 0, |
| 257 | doc: /* Return the selected window of FRAME_OR_WINDOW. |
| 258 | If omitted, FRAME_OR_WINDOW defaults to the currently selected frame. |
| 259 | Else if FRAME_OR_WINDOW denotes any window, return the selected window |
| 260 | of that window's frame. If FRAME_OR_WINDOW denotes a live frame, return |
| 261 | the selected window of that frame. */) |
| 262 | (Lisp_Object frame_or_window) |
| 263 | { |
| 264 | Lisp_Object window; |
| 265 | |
| 266 | if (NILP (frame_or_window)) |
| 267 | window = SELECTED_FRAME ()->selected_window; |
| 268 | else if (WINDOWP (frame_or_window)) |
| 269 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->selected_window; |
| 270 | else |
| 271 | { |
| 272 | CHECK_LIVE_FRAME (frame_or_window); |
| 273 | window = XFRAME (frame_or_window)->selected_window; |
| 274 | } |
| 275 | |
| 276 | return window; |
| 277 | } |
| 278 | |
| 279 | DEFUN ("set-frame-selected-window", Fset_frame_selected_window, |
| 280 | Sset_frame_selected_window, 2, 3, 0, |
| 281 | doc: /* Set selected window of FRAME to WINDOW. |
| 282 | FRAME must be a live frame and defaults to the selected one. If FRAME |
| 283 | is the selected frame, this makes WINDOW the selected window. Optional |
| 284 | argument NORECORD non-nil means to neither change the order of recently |
| 285 | selected windows nor the buffer list. WINDOW must denote a live window. |
| 286 | Return WINDOW. */) |
| 287 | (Lisp_Object frame, Lisp_Object window, Lisp_Object norecord) |
| 288 | { |
| 289 | if (NILP (frame)) |
| 290 | frame = selected_frame; |
| 291 | |
| 292 | CHECK_LIVE_FRAME (frame); |
| 293 | CHECK_LIVE_WINDOW (window); |
| 294 | |
| 295 | if (! EQ (frame, WINDOW_FRAME (XWINDOW (window)))) |
| 296 | error ("In `set-frame-selected-window', WINDOW is not on FRAME"); |
| 297 | |
| 298 | if (EQ (frame, selected_frame)) |
| 299 | return Fselect_window (window, norecord); |
| 300 | else |
| 301 | return XFRAME (frame)->selected_window = window; |
| 302 | } |
| 303 | |
| 304 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, |
| 305 | doc: /* Return the selected window. |
| 306 | The selected window is the window in which the standard cursor for |
| 307 | selected windows appears and to which many commands apply. */) |
| 308 | (void) |
| 309 | { |
| 310 | return selected_window; |
| 311 | } |
| 312 | |
| 313 | int window_select_count; |
| 314 | |
| 315 | /* If select_window is called with inhibit_point_swap non-zero it will |
| 316 | not store point of the old selected window's buffer back into that |
| 317 | window's pointm slot. This is needed by Fset_window_configuration to |
| 318 | avoid that the display routine is called with selected_window set to |
| 319 | Qnil causing a subsequent crash. */ |
| 320 | static Lisp_Object |
| 321 | select_window (Lisp_Object window, Lisp_Object norecord, int inhibit_point_swap) |
| 322 | { |
| 323 | register struct window *w; |
| 324 | register struct window *ow; |
| 325 | struct frame *sf; |
| 326 | |
| 327 | CHECK_LIVE_WINDOW (window); |
| 328 | |
| 329 | w = XWINDOW (window); |
| 330 | w->frozen_window_start_p = 0; |
| 331 | |
| 332 | if (NILP (norecord)) |
| 333 | { |
| 334 | ++window_select_count; |
| 335 | XSETFASTINT (w->use_time, window_select_count); |
| 336 | record_buffer (w->buffer); |
| 337 | } |
| 338 | |
| 339 | if (EQ (window, selected_window) && !inhibit_point_swap) |
| 340 | return window; |
| 341 | |
| 342 | sf = SELECTED_FRAME (); |
| 343 | if (XFRAME (WINDOW_FRAME (w)) != sf) |
| 344 | { |
| 345 | XFRAME (WINDOW_FRAME (w))->selected_window = window; |
| 346 | /* Use this rather than Fhandle_switch_frame |
| 347 | so that FRAME_FOCUS_FRAME is moved appropriately as we |
| 348 | move around in the state where a minibuffer in a separate |
| 349 | frame is active. */ |
| 350 | Fselect_frame (WINDOW_FRAME (w), norecord); |
| 351 | /* Fselect_frame called us back so we've done all the work already. */ |
| 352 | eassert (EQ (window, selected_window)); |
| 353 | return window; |
| 354 | } |
| 355 | else |
| 356 | sf->selected_window = window; |
| 357 | |
| 358 | /* Store the current buffer's actual point into the |
| 359 | old selected window. It belongs to that window, |
| 360 | and when the window is not selected, must be in the window. */ |
| 361 | if (!inhibit_point_swap) |
| 362 | { |
| 363 | ow = XWINDOW (selected_window); |
| 364 | if (! NILP (ow->buffer)) |
| 365 | set_marker_both (ow->pointm, ow->buffer, |
| 366 | BUF_PT (XBUFFER (ow->buffer)), |
| 367 | BUF_PT_BYTE (XBUFFER (ow->buffer))); |
| 368 | } |
| 369 | |
| 370 | selected_window = window; |
| 371 | |
| 372 | Fset_buffer (w->buffer); |
| 373 | |
| 374 | BVAR (XBUFFER (w->buffer), last_selected_window) = window; |
| 375 | |
| 376 | /* Go to the point recorded in the window. |
| 377 | This is important when the buffer is in more |
| 378 | than one window. It also matters when |
| 379 | redisplay_window has altered point after scrolling, |
| 380 | because it makes the change only in the window. */ |
| 381 | { |
| 382 | register EMACS_INT new_point = marker_position (w->pointm); |
| 383 | if (new_point < BEGV) |
| 384 | SET_PT (BEGV); |
| 385 | else if (new_point > ZV) |
| 386 | SET_PT (ZV); |
| 387 | else |
| 388 | SET_PT (new_point); |
| 389 | } |
| 390 | |
| 391 | windows_or_buffers_changed++; |
| 392 | return window; |
| 393 | } |
| 394 | |
| 395 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, |
| 396 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. |
| 397 | Also make WINDOW's buffer current and make WINDOW the frame's selected |
| 398 | window. Return WINDOW. |
| 399 | |
| 400 | Optional second arg NORECORD non-nil means do not put this buffer at the |
| 401 | front of the buffer list and do not make this window the most recently |
| 402 | selected one. |
| 403 | |
| 404 | Note that the main editor command loop sets the current buffer to the |
| 405 | buffer of the selected window before each command. */) |
| 406 | (register Lisp_Object window, Lisp_Object norecord) |
| 407 | { |
| 408 | return select_window (window, norecord, 0); |
| 409 | } |
| 410 | \f |
| 411 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
| 412 | doc: /* Return the buffer that WINDOW is displaying. |
| 413 | WINDOW can be any window and defaults to the selected one. |
| 414 | If WINDOW is an internal window return nil. */) |
| 415 | (Lisp_Object window) |
| 416 | { |
| 417 | return decode_any_window (window)->buffer; |
| 418 | } |
| 419 | |
| 420 | DEFUN ("window-parent", Fwindow_parent, Swindow_parent, 0, 1, 0, |
| 421 | doc: /* Return WINDOW's parent window. |
| 422 | WINDOW can be any window and defaults to the selected one. |
| 423 | Return nil if WINDOW has no parent. */) |
| 424 | (Lisp_Object window) |
| 425 | { |
| 426 | return decode_any_window (window)->parent; |
| 427 | } |
| 428 | |
| 429 | DEFUN ("window-top-child", Fwindow_top_child, Swindow_top_child, 0, 1, 0, |
| 430 | doc: /* Return WINDOW's topmost child window. |
| 431 | WINDOW can be any window and defaults to the selected one. |
| 432 | Return nil if WINDOW is not a vertical combination. */) |
| 433 | (Lisp_Object window) |
| 434 | { |
| 435 | return decode_any_window (window)->vchild; |
| 436 | } |
| 437 | |
| 438 | DEFUN ("window-left-child", Fwindow_left_child, Swindow_left_child, 0, 1, 0, |
| 439 | doc: /* Return WINDOW's leftmost child window. |
| 440 | WINDOW can be any window and defaults to the selected one. |
| 441 | Return nil if WINDOW is not a horizontal combination. */) |
| 442 | (Lisp_Object window) |
| 443 | { |
| 444 | return decode_any_window (window)->hchild; |
| 445 | } |
| 446 | |
| 447 | DEFUN ("window-next-sibling", Fwindow_next_sibling, Swindow_next_sibling, 0, 1, 0, |
| 448 | doc: /* Return WINDOW's next sibling window. |
| 449 | WINDOW can be any window and defaults to the selected one. |
| 450 | Return nil if WINDOW has no next sibling. */) |
| 451 | (Lisp_Object window) |
| 452 | { |
| 453 | return decode_any_window (window)->next; |
| 454 | } |
| 455 | |
| 456 | DEFUN ("window-prev-sibling", Fwindow_prev_sibling, Swindow_prev_sibling, 0, 1, 0, |
| 457 | doc: /* Return WINDOW's previous sibling window. |
| 458 | WINDOW can be any window and defaults to the selected one. |
| 459 | Return nil if WINDOW has no previous sibling. */) |
| 460 | (Lisp_Object window) |
| 461 | { |
| 462 | return decode_any_window (window)->prev; |
| 463 | } |
| 464 | |
| 465 | DEFUN ("window-splits", Fwindow_splits, Swindow_splits, 0, 1, 0, |
| 466 | doc: /* Return splits status for WINDOW. |
| 467 | WINDOW can be any window and defaults to the selected one. |
| 468 | |
| 469 | If the value returned by this function is nil and WINDOW is resized, the |
| 470 | corresponding space is preferably taken from (or given to) WINDOW's |
| 471 | right sibling. When WINDOW is deleted, its space is given to its left |
| 472 | sibling. |
| 473 | |
| 474 | If the value returned by this function is non-nil, resizing and deleting |
| 475 | WINDOW may resize all windows in the same combination. */) |
| 476 | (Lisp_Object window) |
| 477 | { |
| 478 | return decode_any_window (window)->splits; |
| 479 | } |
| 480 | |
| 481 | DEFUN ("set-window-splits", Fset_window_splits, Sset_window_splits, 2, 2, 0, |
| 482 | doc: /* Set splits status of WINDOW to STATUS. |
| 483 | WINDOW can be any window and defaults to the selected one. Return |
| 484 | STATUS. |
| 485 | |
| 486 | If STATUS is nil and WINDOW is later resized, the corresponding space is |
| 487 | preferably taken from (or given to) WINDOW's right sibling. When WINDOW |
| 488 | is deleted, its space is given to its left sibling. |
| 489 | |
| 490 | If STATUS is non-nil, resizing and deleting WINDOW may resize all |
| 491 | windows in the same combination. */) |
| 492 | (Lisp_Object window, Lisp_Object status) |
| 493 | { |
| 494 | register struct window *w = decode_any_window (window); |
| 495 | |
| 496 | w->splits = status; |
| 497 | |
| 498 | return w->splits; |
| 499 | } |
| 500 | |
| 501 | DEFUN ("window-nest", Fwindow_nest, Swindow_nest, 0, 1, 0, |
| 502 | doc: /* Return nest status of WINDOW. |
| 503 | WINDOW can be any window and defaults to the selected one. |
| 504 | |
| 505 | If the return value is nil, subwindows of WINDOW can be recombined with |
| 506 | WINDOW's siblings. A return value of non-nil means that subwindows of |
| 507 | WINDOW are never \(re-)combined with WINDOW's siblings. */) |
| 508 | (Lisp_Object window) |
| 509 | { |
| 510 | return decode_any_window (window)->nest; |
| 511 | } |
| 512 | |
| 513 | DEFUN ("set-window-nest", Fset_window_nest, Sset_window_nest, 2, 2, 0, |
| 514 | doc: /* Set nest status of WINDOW to STATUS. |
| 515 | WINDOW can be any window and defaults to the selected one. Return |
| 516 | STATUS. |
| 517 | |
| 518 | If STATUS is nil, subwindows of WINDOW can be recombined with WINDOW's |
| 519 | siblings. STATUS non-nil means that subwindows of WINDOW are never |
| 520 | \(re-)combined with WINDOW's siblings. */) |
| 521 | (Lisp_Object window, Lisp_Object status) |
| 522 | { |
| 523 | register struct window *w = decode_any_window (window); |
| 524 | |
| 525 | w->nest = status; |
| 526 | |
| 527 | return w->nest; |
| 528 | } |
| 529 | |
| 530 | DEFUN ("window-use-time", Fwindow_use_time, Swindow_use_time, 0, 1, 0, |
| 531 | doc: /* Return WINDOW's use time. |
| 532 | WINDOW defaults to the selected window. The window with the highest use |
| 533 | time is the most recently selected one. The window with the lowest use |
| 534 | time is the least recently selected one. */) |
| 535 | (Lisp_Object window) |
| 536 | { |
| 537 | return decode_window (window)->use_time; |
| 538 | } |
| 539 | \f |
| 540 | DEFUN ("window-total-size", Fwindow_total_size, Swindow_total_size, 0, 2, 0, |
| 541 | doc: /* Return the total number of lines of WINDOW. |
| 542 | WINDOW can be any window and defaults to the selected one. The return |
| 543 | value includes WINDOW's mode line and header line, if any. If WINDOW |
| 544 | is internal, the return value is the sum of the total number of lines |
| 545 | of WINDOW's child windows if these are vertically combined and the |
| 546 | height of WINDOW's first child otherwise. |
| 547 | |
| 548 | Optional argument HORIZONTAL non-nil means return the total number of |
| 549 | columns of WINDOW. In this case the return value includes any vertical |
| 550 | dividers or scrollbars of WINDOW. If WINDOW is internal, the return |
| 551 | value is the sum of the total number of columns of WINDOW's child |
| 552 | windows if they are horizontally combined and the width of WINDOW's |
| 553 | first child otherwise. */) |
| 554 | (Lisp_Object window, Lisp_Object horizontal) |
| 555 | { |
| 556 | if (NILP (horizontal)) |
| 557 | return decode_any_window (window)->total_lines; |
| 558 | else |
| 559 | return decode_any_window (window)->total_cols; |
| 560 | } |
| 561 | |
| 562 | DEFUN ("window-new-total", Fwindow_new_total, Swindow_new_total, 0, 1, 0, |
| 563 | doc: /* Return new total size of WINDOW. |
| 564 | WINDOW defaults to the selected window. */) |
| 565 | (Lisp_Object window) |
| 566 | { |
| 567 | return decode_any_window (window)->new_total; |
| 568 | } |
| 569 | |
| 570 | DEFUN ("window-normal-size", Fwindow_normal_size, Swindow_normal_size, 0, 2, 0, |
| 571 | doc: /* Return normal height of WINDOW. |
| 572 | WINDOW can be any window and defaults to the selected one. Optional |
| 573 | argument HORIZONTAL non-nil means return normal width of WINDOW. */) |
| 574 | (Lisp_Object window, Lisp_Object horizontal) |
| 575 | { |
| 576 | if (NILP (horizontal)) |
| 577 | return decode_any_window (window)->normal_lines; |
| 578 | else |
| 579 | return decode_any_window (window)->normal_cols; |
| 580 | } |
| 581 | |
| 582 | DEFUN ("window-new-normal", Fwindow_new_normal, Swindow_new_normal, 0, 1, 0, |
| 583 | doc: /* Return new normal size of WINDOW. |
| 584 | WINDOW can be any window and defaults to the selected one. */) |
| 585 | (Lisp_Object window) |
| 586 | { |
| 587 | return decode_any_window (window)->new_normal; |
| 588 | } |
| 589 | |
| 590 | DEFUN ("window-left-column", Fwindow_left_column, Swindow_left_column, 0, 1, 0, |
| 591 | doc: /* Return left column of WINDOW. |
| 592 | WINDOW can be any window and defaults to the selected one. */) |
| 593 | (Lisp_Object window) |
| 594 | { |
| 595 | return decode_any_window (window)->left_col; |
| 596 | } |
| 597 | |
| 598 | DEFUN ("window-top-line", Fwindow_top_line, Swindow_top_line, 0, 1, 0, |
| 599 | doc: /* Return top line of WINDOW. |
| 600 | WINDOW can be any window and defaults to the selected one. */) |
| 601 | (Lisp_Object window) |
| 602 | { |
| 603 | return decode_any_window (window)->top_line; |
| 604 | } |
| 605 | |
| 606 | /* Return the number of lines of W's body. Don't count any mode or |
| 607 | header line of W. */ |
| 608 | |
| 609 | static int |
| 610 | window_body_lines (struct window *w) |
| 611 | { |
| 612 | int height = XFASTINT (w->total_lines); |
| 613 | |
| 614 | if (!MINI_WINDOW_P (w)) |
| 615 | { |
| 616 | if (WINDOW_WANTS_MODELINE_P (w)) |
| 617 | --height; |
| 618 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
| 619 | --height; |
| 620 | } |
| 621 | |
| 622 | return height; |
| 623 | } |
| 624 | |
| 625 | /* Return the number of columns of W's body. Don't count columns |
| 626 | occupied by the scroll bar or the vertical bar separating W from its |
| 627 | right sibling. On window-systems don't count fringes or display |
| 628 | margins either. */ |
| 629 | |
| 630 | int |
| 631 | window_body_cols (struct window *w) |
| 632 | { |
| 633 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
| 634 | int width = XINT (w->total_cols); |
| 635 | |
| 636 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) |
| 637 | /* Scroll bars occupy a few columns. */ |
| 638 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); |
| 639 | else if (!FRAME_WINDOW_P (f) |
| 640 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) |
| 641 | /* The column of `|' characters separating side-by-side windows |
| 642 | occupies one column only. */ |
| 643 | width -= 1; |
| 644 | |
| 645 | if (FRAME_WINDOW_P (f)) |
| 646 | /* On window-systems, fringes and display margins cannot be |
| 647 | used for normal text. */ |
| 648 | width -= (WINDOW_FRINGE_COLS (w) |
| 649 | + WINDOW_LEFT_MARGIN_COLS (w) |
| 650 | + WINDOW_RIGHT_MARGIN_COLS (w)); |
| 651 | |
| 652 | return width; |
| 653 | } |
| 654 | |
| 655 | DEFUN ("window-body-size", Fwindow_body_size, Swindow_body_size, 0, 2, 0, |
| 656 | doc: /* Return the number of lines of WINDOW's body. |
| 657 | WINDOW must be a live window and defaults to the selected one. The |
| 658 | return value does not include WINDOW's mode line and header line, if |
| 659 | any. |
| 660 | |
| 661 | Optional argument HORIZONTAL non-nil means return the number of columns |
| 662 | of WINDOW's body. In this case, the return value does not include any |
| 663 | vertical dividers or scroll bars owned by WINDOW. On a window-system |
| 664 | the return value does not include the number of columns used for |
| 665 | WINDOW's fringes or display margins either. */) |
| 666 | (Lisp_Object window, Lisp_Object horizontal) |
| 667 | { |
| 668 | struct window *w = decode_any_window (window); |
| 669 | |
| 670 | if (NILP (horizontal)) |
| 671 | return make_number (window_body_lines (w)); |
| 672 | else |
| 673 | return make_number (window_body_cols (w)); |
| 674 | } |
| 675 | |
| 676 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
| 677 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
| 678 | WINDOW must be a live window and defaults to the selected one. */) |
| 679 | (Lisp_Object window) |
| 680 | { |
| 681 | return decode_window (window)->hscroll; |
| 682 | } |
| 683 | |
| 684 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, |
| 685 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
| 686 | If WINDOW is nil, the selected window is used. |
| 687 | Return NCOL. NCOL should be zero or positive. |
| 688 | |
| 689 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the |
| 690 | window so that the location of point moves off-window. */) |
| 691 | (Lisp_Object window, Lisp_Object ncol) |
| 692 | { |
| 693 | struct window *w = decode_window (window); |
| 694 | int hscroll; |
| 695 | |
| 696 | CHECK_NUMBER (ncol); |
| 697 | hscroll = max (0, XINT (ncol)); |
| 698 | |
| 699 | /* Prevent redisplay shortcuts when changing the hscroll. */ |
| 700 | if (XINT (w->hscroll) != hscroll) |
| 701 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
| 702 | |
| 703 | w->hscroll = make_number (hscroll); |
| 704 | return ncol; |
| 705 | } |
| 706 | |
| 707 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
| 708 | Swindow_redisplay_end_trigger, 0, 1, 0, |
| 709 | doc: /* Return WINDOW's redisplay end trigger value. |
| 710 | WINDOW defaults to the selected window. |
| 711 | See `set-window-redisplay-end-trigger' for more information. */) |
| 712 | (Lisp_Object window) |
| 713 | { |
| 714 | return decode_window (window)->redisplay_end_trigger; |
| 715 | } |
| 716 | |
| 717 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, |
| 718 | Sset_window_redisplay_end_trigger, 2, 2, 0, |
| 719 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
| 720 | VALUE should be a buffer position (typically a marker) or nil. |
| 721 | If it is a buffer position, then if redisplay in WINDOW reaches a position |
| 722 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called |
| 723 | with two arguments: WINDOW, and the end trigger value. |
| 724 | Afterwards the end-trigger value is reset to nil. */) |
| 725 | (register Lisp_Object window, Lisp_Object value) |
| 726 | { |
| 727 | register struct window *w; |
| 728 | |
| 729 | w = decode_window (window); |
| 730 | w->redisplay_end_trigger = value; |
| 731 | return value; |
| 732 | } |
| 733 | |
| 734 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
| 735 | doc: /* Return a list of the edge coordinates of WINDOW. |
| 736 | The list has the form (LEFT TOP RIGHT BOTTOM). |
| 737 | TOP and BOTTOM count by lines, and LEFT and RIGHT count by columns, |
| 738 | all relative to 0, 0 at top left corner of frame. |
| 739 | |
| 740 | RIGHT is one more than the rightmost column occupied by WINDOW. |
| 741 | BOTTOM is one more than the bottommost row occupied by WINDOW. |
| 742 | The edges include the space used by WINDOW's scroll bar, display |
| 743 | margins, fringes, header line, and/or mode line. For the edges of |
| 744 | just the text area, use `window-inside-edges'. */) |
| 745 | (Lisp_Object window) |
| 746 | { |
| 747 | register struct window *w = decode_any_window (window); |
| 748 | |
| 749 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
| 750 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), |
| 751 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), |
| 752 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), |
| 753 | Qnil)))); |
| 754 | } |
| 755 | |
| 756 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
| 757 | doc: /* Return a list of the edge pixel coordinates of WINDOW. |
| 758 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at |
| 759 | the top left corner of the frame. |
| 760 | |
| 761 | RIGHT is one more than the rightmost x position occupied by WINDOW. |
| 762 | BOTTOM is one more than the bottommost y position occupied by WINDOW. |
| 763 | The pixel edges include the space used by WINDOW's scroll bar, display |
| 764 | margins, fringes, header line, and/or mode line. For the pixel edges |
| 765 | of just the text area, use `window-inside-pixel-edges'. */) |
| 766 | (Lisp_Object window) |
| 767 | { |
| 768 | register struct window *w = decode_any_window (window); |
| 769 | |
| 770 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), |
| 771 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), |
| 772 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), |
| 773 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), |
| 774 | Qnil)))); |
| 775 | } |
| 776 | |
| 777 | static void |
| 778 | calc_absolute_offset(struct window *w, int *add_x, int *add_y) |
| 779 | { |
| 780 | struct frame *f = XFRAME (w->frame); |
| 781 | *add_y = f->top_pos; |
| 782 | #ifdef FRAME_MENUBAR_HEIGHT |
| 783 | *add_y += FRAME_MENUBAR_HEIGHT (f); |
| 784 | #endif |
| 785 | #ifdef FRAME_TOOLBAR_TOP_HEIGHT |
| 786 | *add_y += FRAME_TOOLBAR_TOP_HEIGHT (f); |
| 787 | #elif FRAME_TOOLBAR_HEIGHT |
| 788 | *add_y += FRAME_TOOLBAR_HEIGHT (f); |
| 789 | #endif |
| 790 | #ifdef FRAME_NS_TITLEBAR_HEIGHT |
| 791 | *add_y += FRAME_NS_TITLEBAR_HEIGHT (f); |
| 792 | #endif |
| 793 | *add_x = f->left_pos; |
| 794 | #ifdef FRAME_TOOLBAR_LEFT_WIDTH |
| 795 | *add_x += FRAME_TOOLBAR_LEFT_WIDTH (f); |
| 796 | #endif |
| 797 | } |
| 798 | |
| 799 | DEFUN ("window-absolute-pixel-edges", Fwindow_absolute_pixel_edges, |
| 800 | Swindow_absolute_pixel_edges, 0, 1, 0, |
| 801 | doc: /* Return a list of the edge pixel coordinates of WINDOW. |
| 802 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at |
| 803 | the top left corner of the display. |
| 804 | |
| 805 | RIGHT is one more than the rightmost x position occupied by WINDOW. |
| 806 | BOTTOM is one more than the bottommost y position occupied by WINDOW. |
| 807 | The pixel edges include the space used by WINDOW's scroll bar, display |
| 808 | margins, fringes, header line, and/or mode line. For the pixel edges |
| 809 | of just the text area, use `window-inside-absolute-pixel-edges'. */) |
| 810 | (Lisp_Object window) |
| 811 | { |
| 812 | register struct window *w = decode_any_window (window); |
| 813 | int add_x, add_y; |
| 814 | calc_absolute_offset (w, &add_x, &add_y); |
| 815 | |
| 816 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w) + add_x), |
| 817 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w) + add_y), |
| 818 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w) + add_x), |
| 819 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w) + add_y), |
| 820 | Qnil)))); |
| 821 | } |
| 822 | |
| 823 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, |
| 824 | doc: /* Return a list of the edge coordinates of WINDOW. |
| 825 | The list has the form (LEFT TOP RIGHT BOTTOM). |
| 826 | TOP and BOTTOM count by lines, and LEFT and RIGHT count by columns, |
| 827 | all relative to 0, 0 at top left corner of frame. |
| 828 | |
| 829 | RIGHT is one more than the rightmost column of WINDOW's text area. |
| 830 | BOTTOM is one more than the bottommost row of WINDOW's text area. |
| 831 | The inside edges do not include the space used by the WINDOW's scroll |
| 832 | bar, display margins, fringes, header line, and/or mode line. */) |
| 833 | (Lisp_Object window) |
| 834 | { |
| 835 | register struct window *w = decode_any_window (window); |
| 836 | |
| 837 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) |
| 838 | + WINDOW_LEFT_MARGIN_COLS (w) |
| 839 | + WINDOW_LEFT_FRINGE_COLS (w)), |
| 840 | make_number (WINDOW_TOP_EDGE_LINE (w) |
| 841 | + WINDOW_HEADER_LINE_LINES (w)), |
| 842 | make_number (WINDOW_BOX_RIGHT_EDGE_COL (w) |
| 843 | - WINDOW_RIGHT_MARGIN_COLS (w) |
| 844 | - WINDOW_RIGHT_FRINGE_COLS (w)), |
| 845 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) |
| 846 | - WINDOW_MODE_LINE_LINES (w))); |
| 847 | } |
| 848 | |
| 849 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, |
| 850 | doc: /* Return a list of the edge pixel coordinates of WINDOW. |
| 851 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at |
| 852 | the top left corner of the frame. |
| 853 | |
| 854 | RIGHT is one more than the rightmost x position of WINDOW's text area. |
| 855 | BOTTOM is one more than the bottommost y position of WINDOW's text area. |
| 856 | The inside edges do not include the space used by WINDOW's scroll bar, |
| 857 | display margins, fringes, header line, and/or mode line. */) |
| 858 | (Lisp_Object window) |
| 859 | { |
| 860 | register struct window *w = decode_any_window (window); |
| 861 | |
| 862 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) |
| 863 | + WINDOW_LEFT_MARGIN_WIDTH (w) |
| 864 | + WINDOW_LEFT_FRINGE_WIDTH (w)), |
| 865 | make_number (WINDOW_TOP_EDGE_Y (w) |
| 866 | + WINDOW_HEADER_LINE_HEIGHT (w)), |
| 867 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
| 868 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
| 869 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), |
| 870 | make_number (WINDOW_BOTTOM_EDGE_Y (w) |
| 871 | - WINDOW_MODE_LINE_HEIGHT (w))); |
| 872 | } |
| 873 | |
| 874 | DEFUN ("window-inside-absolute-pixel-edges", |
| 875 | Fwindow_inside_absolute_pixel_edges, |
| 876 | Swindow_inside_absolute_pixel_edges, 0, 1, 0, |
| 877 | doc: /* Return a list of the edge pixel coordinates of WINDOW. |
| 878 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at |
| 879 | the top left corner of the display. |
| 880 | |
| 881 | RIGHT is one more than the rightmost x position of WINDOW's text area. |
| 882 | BOTTOM is one more than the bottommost y position of WINDOW's text area. |
| 883 | The inside edges do not include the space used by WINDOW's scroll bar, |
| 884 | display margins, fringes, header line, and/or mode line. */) |
| 885 | (Lisp_Object window) |
| 886 | { |
| 887 | register struct window *w = decode_any_window (window); |
| 888 | int add_x, add_y; |
| 889 | calc_absolute_offset (w, &add_x, &add_y); |
| 890 | |
| 891 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) |
| 892 | + WINDOW_LEFT_MARGIN_WIDTH (w) |
| 893 | + WINDOW_LEFT_FRINGE_WIDTH (w) + add_x), |
| 894 | make_number (WINDOW_TOP_EDGE_Y (w) |
| 895 | + WINDOW_HEADER_LINE_HEIGHT (w) + add_y), |
| 896 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
| 897 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
| 898 | - WINDOW_RIGHT_FRINGE_WIDTH (w) + add_x), |
| 899 | make_number (WINDOW_BOTTOM_EDGE_Y (w) |
| 900 | - WINDOW_MODE_LINE_HEIGHT (w) + add_y)); |
| 901 | } |
| 902 | |
| 903 | /* Test if the character at column X, row Y is within window W. |
| 904 | If it is not, return ON_NOTHING; |
| 905 | if it is in the window's text area, return ON_TEXT; |
| 906 | if it is on the window's modeline, return ON_MODE_LINE; |
| 907 | if it is on the border between the window and its right sibling, |
| 908 | return ON_VERTICAL_BORDER. |
| 909 | if it is on a scroll bar, return ON_SCROLL_BAR. |
| 910 | if it is on the window's top line, return ON_HEADER_LINE; |
| 911 | if it is in left or right fringe of the window, |
| 912 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE; |
| 913 | if it is in the marginal area to the left/right of the window, |
| 914 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN. |
| 915 | |
| 916 | X and Y are frame relative pixel coordinates. */ |
| 917 | |
| 918 | static enum window_part |
| 919 | coordinates_in_window (register struct window *w, int x, int y) |
| 920 | { |
| 921 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
| 922 | int left_x, right_x; |
| 923 | enum window_part part; |
| 924 | int ux = FRAME_COLUMN_WIDTH (f); |
| 925 | int x0 = WINDOW_LEFT_EDGE_X (w); |
| 926 | int x1 = WINDOW_RIGHT_EDGE_X (w); |
| 927 | /* The width of the area where the vertical line can be dragged. |
| 928 | (Between mode lines for instance. */ |
| 929 | int grabbable_width = ux; |
| 930 | int lmargin_width, rmargin_width, text_left, text_right; |
| 931 | int top_y = WINDOW_TOP_EDGE_Y (w); |
| 932 | int bottom_y = WINDOW_BOTTOM_EDGE_Y (w); |
| 933 | |
| 934 | /* Outside any interesting row? */ |
| 935 | if (y < top_y || y >= bottom_y) |
| 936 | return ON_NOTHING; |
| 937 | |
| 938 | /* In what's below, we subtract 1 when computing right_x because we |
| 939 | want the rightmost pixel, which is given by left_pixel+width-1. */ |
| 940 | if (w->pseudo_window_p) |
| 941 | { |
| 942 | left_x = 0; |
| 943 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
| 944 | } |
| 945 | else |
| 946 | { |
| 947 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
| 948 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; |
| 949 | } |
| 950 | |
| 951 | /* On the mode line or header line? If it's near the start of |
| 952 | the mode or header line of window that's has a horizontal |
| 953 | sibling, say it's on the vertical line. That's to be able |
| 954 | to resize windows horizontally in case we're using toolkit |
| 955 | scroll bars. */ |
| 956 | |
| 957 | if (WINDOW_WANTS_MODELINE_P (w) |
| 958 | && y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) |
| 959 | { |
| 960 | part = ON_MODE_LINE; |
| 961 | |
| 962 | header_vertical_border_check: |
| 963 | /* We're somewhere on the mode line. We consider the place |
| 964 | between mode lines of horizontally adjacent mode lines |
| 965 | as the vertical border. If scroll bars on the left, |
| 966 | return the right window. */ |
| 967 | if ((WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) |
| 968 | || WINDOW_RIGHTMOST_P (w)) |
| 969 | && !WINDOW_LEFTMOST_P (w) |
| 970 | && eabs (x - x0) < grabbable_width) |
| 971 | return ON_VERTICAL_BORDER; |
| 972 | |
| 973 | /* Make sure we're not at the rightmost position of a |
| 974 | mode-/header-line and there's yet another window on the |
| 975 | right. (Bug#1372) */ |
| 976 | else if ((WINDOW_RIGHTMOST_P (w) || x < x1) |
| 977 | && eabs (x - x1) < grabbable_width) |
| 978 | return ON_VERTICAL_BORDER; |
| 979 | |
| 980 | if (x < x0 || x >= x1) |
| 981 | return ON_NOTHING; |
| 982 | |
| 983 | return part; |
| 984 | } |
| 985 | |
| 986 | if (WINDOW_WANTS_HEADER_LINE_P (w) |
| 987 | && y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) |
| 988 | { |
| 989 | part = ON_HEADER_LINE; |
| 990 | goto header_vertical_border_check; |
| 991 | } |
| 992 | |
| 993 | if (x < x0 || x >= x1) return ON_NOTHING; |
| 994 | |
| 995 | /* Outside any interesting column? */ |
| 996 | if (x < left_x || x > right_x) |
| 997 | return ON_SCROLL_BAR; |
| 998 | |
| 999 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); |
| 1000 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); |
| 1001 | |
| 1002 | text_left = window_box_left (w, TEXT_AREA); |
| 1003 | text_right = text_left + window_box_width (w, TEXT_AREA); |
| 1004 | |
| 1005 | if (FRAME_WINDOW_P (f)) |
| 1006 | { |
| 1007 | if (!w->pseudo_window_p |
| 1008 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
| 1009 | && !WINDOW_RIGHTMOST_P (w) |
| 1010 | && (eabs (x - right_x) < grabbable_width)) |
| 1011 | return ON_VERTICAL_BORDER; |
| 1012 | } |
| 1013 | /* Need to say "x > right_x" rather than >=, since on character |
| 1014 | terminals, the vertical line's x coordinate is right_x. */ |
| 1015 | else if (!w->pseudo_window_p |
| 1016 | && !WINDOW_RIGHTMOST_P (w) |
| 1017 | && x > right_x - ux) |
| 1018 | return ON_VERTICAL_BORDER; |
| 1019 | |
| 1020 | if (x < text_left) |
| 1021 | { |
| 1022 | if (lmargin_width > 0 |
| 1023 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
| 1024 | ? (x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) |
| 1025 | : (x < left_x + lmargin_width))) |
| 1026 | return ON_LEFT_MARGIN; |
| 1027 | |
| 1028 | return ON_LEFT_FRINGE; |
| 1029 | } |
| 1030 | |
| 1031 | if (x >= text_right) |
| 1032 | { |
| 1033 | if (rmargin_width > 0 |
| 1034 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
| 1035 | ? (x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) |
| 1036 | : (x >= right_x - rmargin_width))) |
| 1037 | return ON_RIGHT_MARGIN; |
| 1038 | |
| 1039 | return ON_RIGHT_FRINGE; |
| 1040 | } |
| 1041 | |
| 1042 | /* Everything special ruled out - must be on text area */ |
| 1043 | return ON_TEXT; |
| 1044 | } |
| 1045 | |
| 1046 | /* Take X is the frame-relative pixel x-coordinate, and return the |
| 1047 | x-coordinate relative to part PART of window W. */ |
| 1048 | int |
| 1049 | window_relative_x_coord (struct window *w, enum window_part part, int x) |
| 1050 | { |
| 1051 | int left_x = (w->pseudo_window_p) ? 0 : WINDOW_BOX_LEFT_EDGE_X (w); |
| 1052 | |
| 1053 | switch (part) |
| 1054 | { |
| 1055 | case ON_TEXT: |
| 1056 | return x - window_box_left (w, TEXT_AREA); |
| 1057 | |
| 1058 | case ON_LEFT_FRINGE: |
| 1059 | return x - left_x; |
| 1060 | |
| 1061 | case ON_RIGHT_FRINGE: |
| 1062 | return x - left_x - WINDOW_LEFT_FRINGE_WIDTH (w); |
| 1063 | |
| 1064 | case ON_LEFT_MARGIN: |
| 1065 | return (x - left_x |
| 1066 | - ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) |
| 1067 | ? WINDOW_LEFT_FRINGE_WIDTH (w) : 0)); |
| 1068 | |
| 1069 | case ON_RIGHT_MARGIN: |
| 1070 | return (x + 1 |
| 1071 | - ((w->pseudo_window_p) |
| 1072 | ? WINDOW_TOTAL_WIDTH (w) |
| 1073 | : WINDOW_BOX_RIGHT_EDGE_X (w)) |
| 1074 | + window_box_width (w, RIGHT_MARGIN_AREA) |
| 1075 | + ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) |
| 1076 | ? WINDOW_RIGHT_FRINGE_WIDTH (w) : 0)); |
| 1077 | } |
| 1078 | |
| 1079 | /* ON_SCROLL_BAR, ON_NOTHING, and ON_VERTICAL_BORDER: */ |
| 1080 | return 0; |
| 1081 | } |
| 1082 | |
| 1083 | |
| 1084 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
| 1085 | Scoordinates_in_window_p, 2, 2, 0, |
| 1086 | doc: /* Return non-nil if COORDINATES are in WINDOW. |
| 1087 | COORDINATES is a cons of the form (X . Y), X and Y being distances |
| 1088 | measured in characters from the upper-left corner of the frame. |
| 1089 | \(0 . 0) denotes the character in the upper left corner of the |
| 1090 | frame. |
| 1091 | If COORDINATES are in the text portion of WINDOW, |
| 1092 | the coordinates relative to the window are returned. |
| 1093 | If they are in the mode line of WINDOW, `mode-line' is returned. |
| 1094 | If they are in the top mode line of WINDOW, `header-line' is returned. |
| 1095 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
| 1096 | If they are in the right fringe of WINDOW, `right-fringe' is returned. |
| 1097 | If they are on the border between WINDOW and its right sibling, |
| 1098 | `vertical-line' is returned. |
| 1099 | If they are in the windows's left or right marginal areas, `left-margin'\n\ |
| 1100 | or `right-margin' is returned. */) |
| 1101 | (register Lisp_Object coordinates, Lisp_Object window) |
| 1102 | { |
| 1103 | struct window *w; |
| 1104 | struct frame *f; |
| 1105 | int x, y; |
| 1106 | Lisp_Object lx, ly; |
| 1107 | |
| 1108 | CHECK_WINDOW (window); |
| 1109 | w = XWINDOW (window); |
| 1110 | f = XFRAME (w->frame); |
| 1111 | CHECK_CONS (coordinates); |
| 1112 | lx = Fcar (coordinates); |
| 1113 | ly = Fcdr (coordinates); |
| 1114 | CHECK_NUMBER_OR_FLOAT (lx); |
| 1115 | CHECK_NUMBER_OR_FLOAT (ly); |
| 1116 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
| 1117 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); |
| 1118 | |
| 1119 | switch (coordinates_in_window (w, x, y)) |
| 1120 | { |
| 1121 | case ON_NOTHING: |
| 1122 | return Qnil; |
| 1123 | |
| 1124 | case ON_TEXT: |
| 1125 | /* Convert X and Y to window relative pixel coordinates, and |
| 1126 | return the canonical char units. */ |
| 1127 | x -= window_box_left (w, TEXT_AREA); |
| 1128 | y -= WINDOW_TOP_EDGE_Y (w); |
| 1129 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
| 1130 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); |
| 1131 | |
| 1132 | case ON_MODE_LINE: |
| 1133 | return Qmode_line; |
| 1134 | |
| 1135 | case ON_VERTICAL_BORDER: |
| 1136 | return Qvertical_line; |
| 1137 | |
| 1138 | case ON_HEADER_LINE: |
| 1139 | return Qheader_line; |
| 1140 | |
| 1141 | case ON_LEFT_FRINGE: |
| 1142 | return Qleft_fringe; |
| 1143 | |
| 1144 | case ON_RIGHT_FRINGE: |
| 1145 | return Qright_fringe; |
| 1146 | |
| 1147 | case ON_LEFT_MARGIN: |
| 1148 | return Qleft_margin; |
| 1149 | |
| 1150 | case ON_RIGHT_MARGIN: |
| 1151 | return Qright_margin; |
| 1152 | |
| 1153 | case ON_SCROLL_BAR: |
| 1154 | /* Historically we are supposed to return nil in this case. */ |
| 1155 | return Qnil; |
| 1156 | |
| 1157 | default: |
| 1158 | abort (); |
| 1159 | } |
| 1160 | } |
| 1161 | |
| 1162 | |
| 1163 | /* Callback for foreach_window, used in window_from_coordinates. |
| 1164 | Check if window W contains coordinates specified by USER_DATA which |
| 1165 | is actually a pointer to a struct check_window_data CW. |
| 1166 | |
| 1167 | Check if window W contains coordinates *CW->x and *CW->y. If it |
| 1168 | does, return W in *CW->window, as Lisp_Object, and return in |
| 1169 | *CW->part the part of the window under coordinates *X,*Y. Return |
| 1170 | zero from this function to stop iterating over windows. */ |
| 1171 | |
| 1172 | struct check_window_data |
| 1173 | { |
| 1174 | Lisp_Object *window; |
| 1175 | int x, y; |
| 1176 | enum window_part *part; |
| 1177 | }; |
| 1178 | |
| 1179 | static int |
| 1180 | check_window_containing (struct window *w, void *user_data) |
| 1181 | { |
| 1182 | struct check_window_data *cw = (struct check_window_data *) user_data; |
| 1183 | enum window_part found; |
| 1184 | int continue_p = 1; |
| 1185 | |
| 1186 | found = coordinates_in_window (w, cw->x, cw->y); |
| 1187 | if (found != ON_NOTHING) |
| 1188 | { |
| 1189 | *cw->part = found; |
| 1190 | XSETWINDOW (*cw->window, w); |
| 1191 | continue_p = 0; |
| 1192 | } |
| 1193 | |
| 1194 | return continue_p; |
| 1195 | } |
| 1196 | |
| 1197 | |
| 1198 | /* Find the window containing frame-relative pixel position X/Y and |
| 1199 | return it as a Lisp_Object. |
| 1200 | |
| 1201 | If X, Y is on one of the window's special `window_part' elements, |
| 1202 | set *PART to the id of that element. |
| 1203 | |
| 1204 | If there is no window under X, Y return nil and leave *PART |
| 1205 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
| 1206 | |
| 1207 | This function was previously implemented with a loop cycling over |
| 1208 | windows with Fnext_window, and starting with the frame's selected |
| 1209 | window. It turned out that this doesn't work with an |
| 1210 | implementation of next_window using Vwindow_list, because |
| 1211 | FRAME_SELECTED_WINDOW (F) is not always contained in the window |
| 1212 | tree of F when this function is called asynchronously from |
| 1213 | note_mouse_highlight. The original loop didn't terminate in this |
| 1214 | case. */ |
| 1215 | |
| 1216 | Lisp_Object |
| 1217 | window_from_coordinates (struct frame *f, int x, int y, |
| 1218 | enum window_part *part, int tool_bar_p) |
| 1219 | { |
| 1220 | Lisp_Object window; |
| 1221 | struct check_window_data cw; |
| 1222 | enum window_part dummy; |
| 1223 | |
| 1224 | if (part == 0) |
| 1225 | part = &dummy; |
| 1226 | |
| 1227 | window = Qnil; |
| 1228 | cw.window = &window, cw.x = x, cw.y = y; cw.part = part; |
| 1229 | foreach_window (f, check_window_containing, &cw); |
| 1230 | |
| 1231 | /* If not found above, see if it's in the tool bar window, if a tool |
| 1232 | bar exists. */ |
| 1233 | if (NILP (window) |
| 1234 | && tool_bar_p |
| 1235 | && WINDOWP (f->tool_bar_window) |
| 1236 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 |
| 1237 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), x, y) |
| 1238 | != ON_NOTHING)) |
| 1239 | { |
| 1240 | *part = ON_TEXT; |
| 1241 | window = f->tool_bar_window; |
| 1242 | } |
| 1243 | |
| 1244 | return window; |
| 1245 | } |
| 1246 | |
| 1247 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
| 1248 | doc: /* Return window containing coordinates X and Y on FRAME. |
| 1249 | FRAME must be a live frame and defaults to the selected one. |
| 1250 | The top left corner of the frame is considered to be row 0, |
| 1251 | column 0. */) |
| 1252 | (Lisp_Object x, Lisp_Object y, Lisp_Object frame) |
| 1253 | { |
| 1254 | struct frame *f; |
| 1255 | |
| 1256 | if (NILP (frame)) |
| 1257 | frame = selected_frame; |
| 1258 | CHECK_LIVE_FRAME (frame); |
| 1259 | f = XFRAME (frame); |
| 1260 | |
| 1261 | /* Check that arguments are integers or floats. */ |
| 1262 | CHECK_NUMBER_OR_FLOAT (x); |
| 1263 | CHECK_NUMBER_OR_FLOAT (y); |
| 1264 | |
| 1265 | return window_from_coordinates (f, |
| 1266 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
| 1267 | + FRAME_INTERNAL_BORDER_WIDTH (f)), |
| 1268 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) |
| 1269 | + FRAME_INTERNAL_BORDER_WIDTH (f)), |
| 1270 | 0, 0); |
| 1271 | } |
| 1272 | |
| 1273 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, |
| 1274 | doc: /* Return current value of point in WINDOW. |
| 1275 | WINDOW must be a live window and defaults to the selected one. |
| 1276 | |
| 1277 | For a nonselected window, this is the value point would have |
| 1278 | if that window were selected. |
| 1279 | |
| 1280 | Note that, when WINDOW is the selected window and its buffer |
| 1281 | is also currently selected, the value returned is the same as (point). |
| 1282 | It would be more strictly correct to return the `top-level' value |
| 1283 | of point, outside of any save-excursion forms. |
| 1284 | But that is hard to define. */) |
| 1285 | (Lisp_Object window) |
| 1286 | { |
| 1287 | register struct window *w = decode_window (window); |
| 1288 | |
| 1289 | if (w == XWINDOW (selected_window) |
| 1290 | && current_buffer == XBUFFER (w->buffer)) |
| 1291 | return Fpoint (); |
| 1292 | return Fmarker_position (w->pointm); |
| 1293 | } |
| 1294 | |
| 1295 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, |
| 1296 | doc: /* Return position at which display currently starts in WINDOW. |
| 1297 | WINDOW must be a live window and defaults to the selected one. |
| 1298 | This is updated by redisplay or by calling `set-window-start'. */) |
| 1299 | (Lisp_Object window) |
| 1300 | { |
| 1301 | return Fmarker_position (decode_window (window)->start); |
| 1302 | } |
| 1303 | |
| 1304 | /* This is text temporarily removed from the doc string below. |
| 1305 | |
| 1306 | This function returns nil if the position is not currently known. |
| 1307 | That happens when redisplay is preempted and doesn't finish. |
| 1308 | If in that case you want to compute where the end of the window would |
| 1309 | have been if redisplay had finished, do this: |
| 1310 | (save-excursion |
| 1311 | (goto-char (window-start window)) |
| 1312 | (vertical-motion (1- (window-height window)) window) |
| 1313 | (point))") */ |
| 1314 | |
| 1315 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
| 1316 | doc: /* Return position at which display currently ends in WINDOW. |
| 1317 | WINDOW must be a live window and defaults to the selected one. |
| 1318 | This is updated by redisplay, when it runs to completion. |
| 1319 | Simply changing the buffer text or setting `window-start' |
| 1320 | does not update this value. |
| 1321 | Return nil if there is no recorded value. \(This can happen if the |
| 1322 | last redisplay of WINDOW was preempted, and did not finish.) |
| 1323 | If UPDATE is non-nil, compute the up-to-date position |
| 1324 | if it isn't already recorded. */) |
| 1325 | (Lisp_Object window, Lisp_Object update) |
| 1326 | { |
| 1327 | Lisp_Object value; |
| 1328 | struct window *w = decode_window (window); |
| 1329 | Lisp_Object buf; |
| 1330 | struct buffer *b; |
| 1331 | |
| 1332 | buf = w->buffer; |
| 1333 | CHECK_BUFFER (buf); |
| 1334 | b = XBUFFER (buf); |
| 1335 | |
| 1336 | #if 0 /* This change broke some things. We should make it later. */ |
| 1337 | /* If we don't know the end position, return nil. |
| 1338 | The user can compute it with vertical-motion if he wants to. |
| 1339 | It would be nicer to do it automatically, |
| 1340 | but that's so slow that it would probably bother people. */ |
| 1341 | if (NILP (w->window_end_valid)) |
| 1342 | return Qnil; |
| 1343 | #endif |
| 1344 | |
| 1345 | if (! NILP (update) |
| 1346 | && ! (! NILP (w->window_end_valid) |
| 1347 | && XFASTINT (w->last_modified) >= BUF_MODIFF (b) |
| 1348 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (b)) |
| 1349 | && !noninteractive) |
| 1350 | { |
| 1351 | struct text_pos startp; |
| 1352 | struct it it; |
| 1353 | struct buffer *old_buffer = NULL; |
| 1354 | void *itdata = NULL; |
| 1355 | |
| 1356 | /* Cannot use Fvertical_motion because that function doesn't |
| 1357 | cope with variable-height lines. */ |
| 1358 | if (b != current_buffer) |
| 1359 | { |
| 1360 | old_buffer = current_buffer; |
| 1361 | set_buffer_internal (b); |
| 1362 | } |
| 1363 | |
| 1364 | /* In case W->start is out of the range, use something |
| 1365 | reasonable. This situation occurred when loading a file with |
| 1366 | `-l' containing a call to `rmail' with subsequent other |
| 1367 | commands. At the end, W->start happened to be BEG, while |
| 1368 | rmail had already narrowed the buffer. */ |
| 1369 | if (XMARKER (w->start)->charpos < BEGV) |
| 1370 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
| 1371 | else if (XMARKER (w->start)->charpos > ZV) |
| 1372 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
| 1373 | else |
| 1374 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
| 1375 | |
| 1376 | itdata = bidi_shelve_cache (); |
| 1377 | start_display (&it, w, startp); |
| 1378 | move_it_vertically (&it, window_box_height (w)); |
| 1379 | if (it.current_y < it.last_visible_y) |
| 1380 | move_it_past_eol (&it); |
| 1381 | value = make_number (IT_CHARPOS (it)); |
| 1382 | bidi_unshelve_cache (itdata, 0); |
| 1383 | |
| 1384 | if (old_buffer) |
| 1385 | set_buffer_internal (old_buffer); |
| 1386 | } |
| 1387 | else |
| 1388 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
| 1389 | |
| 1390 | return value; |
| 1391 | } |
| 1392 | |
| 1393 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, |
| 1394 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
| 1395 | Return POS. */) |
| 1396 | (Lisp_Object window, Lisp_Object pos) |
| 1397 | { |
| 1398 | register struct window *w = decode_window (window); |
| 1399 | |
| 1400 | CHECK_NUMBER_COERCE_MARKER (pos); |
| 1401 | if (w == XWINDOW (selected_window) |
| 1402 | && XBUFFER (w->buffer) == current_buffer) |
| 1403 | Fgoto_char (pos); |
| 1404 | else |
| 1405 | set_marker_restricted (w->pointm, pos, w->buffer); |
| 1406 | |
| 1407 | /* We have to make sure that redisplay updates the window to show |
| 1408 | the new value of point. */ |
| 1409 | if (!EQ (window, selected_window)) |
| 1410 | ++windows_or_buffers_changed; |
| 1411 | |
| 1412 | return pos; |
| 1413 | } |
| 1414 | |
| 1415 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, |
| 1416 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
| 1417 | If WINDOW is nil, the selected window is used. Return POS. |
| 1418 | Optional third arg NOFORCE non-nil inhibits next redisplay from |
| 1419 | overriding motion of point in order to display at this exact start. */) |
| 1420 | (Lisp_Object window, Lisp_Object pos, Lisp_Object noforce) |
| 1421 | { |
| 1422 | register struct window *w = decode_window (window); |
| 1423 | |
| 1424 | CHECK_NUMBER_COERCE_MARKER (pos); |
| 1425 | set_marker_restricted (w->start, pos, w->buffer); |
| 1426 | /* this is not right, but much easier than doing what is right. */ |
| 1427 | w->start_at_line_beg = Qnil; |
| 1428 | if (NILP (noforce)) |
| 1429 | w->force_start = Qt; |
| 1430 | w->update_mode_line = Qt; |
| 1431 | XSETFASTINT (w->last_modified, 0); |
| 1432 | XSETFASTINT (w->last_overlay_modified, 0); |
| 1433 | if (!EQ (window, selected_window)) |
| 1434 | windows_or_buffers_changed++; |
| 1435 | |
| 1436 | return pos; |
| 1437 | } |
| 1438 | |
| 1439 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
| 1440 | Spos_visible_in_window_p, 0, 3, 0, |
| 1441 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. |
| 1442 | Return nil if that position is scrolled vertically out of view. |
| 1443 | If a character is only partially visible, nil is returned, unless the |
| 1444 | optional argument PARTIALLY is non-nil. |
| 1445 | If POS is only out of view because of horizontal scrolling, return non-nil. |
| 1446 | If POS is t, it specifies the position of the last visible glyph in WINDOW. |
| 1447 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. |
| 1448 | |
| 1449 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, |
| 1450 | return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), |
| 1451 | where X and Y are the pixel coordinates relative to the top left corner |
| 1452 | of the window. The remaining elements are omitted if the character after |
| 1453 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels |
| 1454 | off-window at the top and bottom of the row, ROWH is the height of the |
| 1455 | display row, and VPOS is the row number (0-based) containing POS. */) |
| 1456 | (Lisp_Object pos, Lisp_Object window, Lisp_Object partially) |
| 1457 | { |
| 1458 | register struct window *w; |
| 1459 | register EMACS_INT posint; |
| 1460 | register struct buffer *buf; |
| 1461 | struct text_pos top; |
| 1462 | Lisp_Object in_window = Qnil; |
| 1463 | int rtop, rbot, rowh, vpos, fully_p = 1; |
| 1464 | int x, y; |
| 1465 | |
| 1466 | w = decode_window (window); |
| 1467 | buf = XBUFFER (w->buffer); |
| 1468 | SET_TEXT_POS_FROM_MARKER (top, w->start); |
| 1469 | |
| 1470 | if (EQ (pos, Qt)) |
| 1471 | posint = -1; |
| 1472 | else if (!NILP (pos)) |
| 1473 | { |
| 1474 | CHECK_NUMBER_COERCE_MARKER (pos); |
| 1475 | posint = XINT (pos); |
| 1476 | } |
| 1477 | else if (w == XWINDOW (selected_window)) |
| 1478 | posint = PT; |
| 1479 | else |
| 1480 | posint = XMARKER (w->pointm)->charpos; |
| 1481 | |
| 1482 | /* If position is above window start or outside buffer boundaries, |
| 1483 | or if window start is out of range, position is not visible. */ |
| 1484 | if ((EQ (pos, Qt) |
| 1485 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) |
| 1486 | && CHARPOS (top) >= BUF_BEGV (buf) |
| 1487 | && CHARPOS (top) <= BUF_ZV (buf) |
| 1488 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) |
| 1489 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) |
| 1490 | in_window = Qt; |
| 1491 | |
| 1492 | if (!NILP (in_window) && !NILP (partially)) |
| 1493 | { |
| 1494 | Lisp_Object part = Qnil; |
| 1495 | if (!fully_p) |
| 1496 | part = list4 (make_number (rtop), make_number (rbot), |
| 1497 | make_number (rowh), make_number (vpos)); |
| 1498 | in_window = Fcons (make_number (x), |
| 1499 | Fcons (make_number (y), part)); |
| 1500 | } |
| 1501 | |
| 1502 | return in_window; |
| 1503 | } |
| 1504 | |
| 1505 | DEFUN ("window-line-height", Fwindow_line_height, |
| 1506 | Swindow_line_height, 0, 2, 0, |
| 1507 | doc: /* Return height in pixels of text line LINE in window WINDOW. |
| 1508 | WINDOW defaults to the selected window. |
| 1509 | |
| 1510 | Return height of current line if LINE is omitted or nil. Return height of |
| 1511 | header or mode line if LINE is `header-line' or `mode-line'. |
| 1512 | Otherwise, LINE is a text line number starting from 0. A negative number |
| 1513 | counts from the end of the window. |
| 1514 | |
| 1515 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height |
| 1516 | in pixels of the visible part of the line, VPOS and YPOS are the |
| 1517 | vertical position in lines and pixels of the line, relative to the top |
| 1518 | of the first text line, and OFFBOT is the number of off-window pixels at |
| 1519 | the bottom of the text line. If there are off-window pixels at the top |
| 1520 | of the (first) text line, YPOS is negative. |
| 1521 | |
| 1522 | Return nil if window display is not up-to-date. In that case, use |
| 1523 | `pos-visible-in-window-p' to obtain the information. */) |
| 1524 | (Lisp_Object line, Lisp_Object window) |
| 1525 | { |
| 1526 | register struct window *w; |
| 1527 | register struct buffer *b; |
| 1528 | struct glyph_row *row, *end_row; |
| 1529 | int max_y, crop, i, n; |
| 1530 | |
| 1531 | w = decode_window (window); |
| 1532 | |
| 1533 | if (noninteractive || w->pseudo_window_p) |
| 1534 | return Qnil; |
| 1535 | |
| 1536 | CHECK_BUFFER (w->buffer); |
| 1537 | b = XBUFFER (w->buffer); |
| 1538 | |
| 1539 | /* Fail if current matrix is not up-to-date. */ |
| 1540 | if (NILP (w->window_end_valid) |
| 1541 | || current_buffer->clip_changed |
| 1542 | || current_buffer->prevent_redisplay_optimizations_p |
| 1543 | || XFASTINT (w->last_modified) < BUF_MODIFF (b) |
| 1544 | || XFASTINT (w->last_overlay_modified) < BUF_OVERLAY_MODIFF (b)) |
| 1545 | return Qnil; |
| 1546 | |
| 1547 | if (NILP (line)) |
| 1548 | { |
| 1549 | i = w->cursor.vpos; |
| 1550 | if (i < 0 || i >= w->current_matrix->nrows |
| 1551 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) |
| 1552 | return Qnil; |
| 1553 | max_y = window_text_bottom_y (w); |
| 1554 | goto found_row; |
| 1555 | } |
| 1556 | |
| 1557 | if (EQ (line, Qheader_line)) |
| 1558 | { |
| 1559 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) |
| 1560 | return Qnil; |
| 1561 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); |
| 1562 | if (!row->enabled_p) |
| 1563 | return Qnil; |
| 1564 | return list4 (make_number (row->height), |
| 1565 | make_number (0), make_number (0), |
| 1566 | make_number (0)); |
| 1567 | } |
| 1568 | |
| 1569 | if (EQ (line, Qmode_line)) |
| 1570 | { |
| 1571 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); |
| 1572 | if (!row->enabled_p) |
| 1573 | return Qnil; |
| 1574 | return list4 (make_number (row->height), |
| 1575 | make_number (0), /* not accurate */ |
| 1576 | make_number (WINDOW_HEADER_LINE_HEIGHT (w) |
| 1577 | + window_text_bottom_y (w)), |
| 1578 | make_number (0)); |
| 1579 | } |
| 1580 | |
| 1581 | CHECK_NUMBER (line); |
| 1582 | n = XINT (line); |
| 1583 | |
| 1584 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); |
| 1585 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); |
| 1586 | max_y = window_text_bottom_y (w); |
| 1587 | i = 0; |
| 1588 | |
| 1589 | while ((n < 0 || i < n) |
| 1590 | && row <= end_row && row->enabled_p |
| 1591 | && row->y + row->height < max_y) |
| 1592 | row++, i++; |
| 1593 | |
| 1594 | if (row > end_row || !row->enabled_p) |
| 1595 | return Qnil; |
| 1596 | |
| 1597 | if (++n < 0) |
| 1598 | { |
| 1599 | if (-n > i) |
| 1600 | return Qnil; |
| 1601 | row += n; |
| 1602 | i += n; |
| 1603 | } |
| 1604 | |
| 1605 | found_row: |
| 1606 | crop = max (0, (row->y + row->height) - max_y); |
| 1607 | return list4 (make_number (row->height + min (0, row->y) - crop), |
| 1608 | make_number (i), |
| 1609 | make_number (row->y), |
| 1610 | make_number (crop)); |
| 1611 | } |
| 1612 | |
| 1613 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
| 1614 | 0, 1, 0, |
| 1615 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. |
| 1616 | More precisely, return the value assigned by the last call of |
| 1617 | `set-window-dedicated-p' for WINDOW. Return nil if that function was |
| 1618 | never called with WINDOW as its argument, or the value set by that |
| 1619 | function was internally reset since its last call. WINDOW defaults to |
| 1620 | the selected window. |
| 1621 | |
| 1622 | When a window is dedicated to its buffer, `display-buffer' will refrain |
| 1623 | from displaying another buffer in it. `get-lru-window' and |
| 1624 | `get-largest-window' treat dedicated windows specially. |
| 1625 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and |
| 1626 | `kill-buffer' can delete a dedicated window and the containing frame. |
| 1627 | |
| 1628 | Functions like `set-window-buffer' may change the buffer displayed by a |
| 1629 | window, unless that window is "strongly" dedicated to its buffer, that |
| 1630 | is the value returned by `window-dedicated-p' is t. */) |
| 1631 | (Lisp_Object window) |
| 1632 | { |
| 1633 | return decode_window (window)->dedicated; |
| 1634 | } |
| 1635 | |
| 1636 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
| 1637 | Sset_window_dedicated_p, 2, 2, 0, |
| 1638 | doc: /* Mark WINDOW as dedicated according to FLAG. |
| 1639 | WINDOW must be a live window and defaults to the selected one. FLAG |
| 1640 | non-nil means mark WINDOW as dedicated to its buffer. FLAG nil means |
| 1641 | mark WINDOW as non-dedicated. Return FLAG. |
| 1642 | |
| 1643 | When a window is dedicated to its buffer, `display-buffer' will refrain |
| 1644 | from displaying another buffer in it. `get-lru-window' and |
| 1645 | `get-largest-window' treat dedicated windows specially. |
| 1646 | `delete-windows-on', `replace-buffer-in-windows', `quit-window', |
| 1647 | `quit-restore-window' and `kill-buffer' can delete a dedicated window |
| 1648 | and the containing frame. |
| 1649 | |
| 1650 | As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to |
| 1651 | its buffer. Functions like `set-window-buffer' may change the buffer |
| 1652 | displayed by a window, unless that window is strongly dedicated to its |
| 1653 | buffer. If and when `set-window-buffer' displays another buffer in a |
| 1654 | window, it also makes sure that the window is no more dedicated. */) |
| 1655 | (Lisp_Object window, Lisp_Object flag) |
| 1656 | { |
| 1657 | register struct window *w = decode_window (window); |
| 1658 | |
| 1659 | w->dedicated = flag; |
| 1660 | return w->dedicated; |
| 1661 | } |
| 1662 | |
| 1663 | DEFUN ("window-prev-buffers", Fwindow_prev_buffers, Swindow_prev_buffers, |
| 1664 | 0, 1, 0, |
| 1665 | doc: /* Return buffers previously shown in WINDOW. |
| 1666 | WINDOW must be a live window and defaults to the selected one. |
| 1667 | |
| 1668 | The return value is either nil or a list of <buffer, window-start, |
| 1669 | window-point> triples where buffer was previously shown in WINDOW. */) |
| 1670 | (Lisp_Object window) |
| 1671 | { |
| 1672 | return decode_window (window)->prev_buffers; |
| 1673 | } |
| 1674 | |
| 1675 | DEFUN ("set-window-prev-buffers", Fset_window_prev_buffers, |
| 1676 | Sset_window_prev_buffers, 2, 2, 0, |
| 1677 | doc: /* Set WINDOW's previous buffers to PREV-BUFFERS. |
| 1678 | WINDOW must be a live window and defaults to the selected one. Return |
| 1679 | PREV-BUFFERS. |
| 1680 | |
| 1681 | PREV-BUFFERS should be either nil or a list of <buffer, window-start, |
| 1682 | window-point> triples where buffer was previously shown in WINDOW. */) |
| 1683 | (Lisp_Object window, Lisp_Object prev_buffers) |
| 1684 | { |
| 1685 | return decode_window (window)->prev_buffers = prev_buffers; |
| 1686 | } |
| 1687 | |
| 1688 | DEFUN ("window-next-buffers", Fwindow_next_buffers, Swindow_next_buffers, |
| 1689 | 0, 1, 0, |
| 1690 | doc: /* Return list of buffers recently re-shown in WINDOW. |
| 1691 | WINDOW must be a live window and defaults to the selected one. */) |
| 1692 | (Lisp_Object window) |
| 1693 | { |
| 1694 | return decode_window (window)->next_buffers; |
| 1695 | } |
| 1696 | |
| 1697 | DEFUN ("set-window-next-buffers", Fset_window_next_buffers, |
| 1698 | Sset_window_next_buffers, 2, 2, 0, |
| 1699 | doc: /* Set WINDOW's next buffers to NEXT-BUFFERS. |
| 1700 | WINDOW must be a live window and defaults to the selected one. Return |
| 1701 | NEXT-BUFFERS. |
| 1702 | |
| 1703 | NEXT-BUFFERS should be either nil or a list of buffers that have been |
| 1704 | recently re-shown in WINDOW. */) |
| 1705 | (Lisp_Object window, Lisp_Object next_buffers) |
| 1706 | { |
| 1707 | return decode_window (window)->next_buffers = next_buffers; |
| 1708 | } |
| 1709 | |
| 1710 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
| 1711 | 0, 1, 0, |
| 1712 | doc: /* Return the parameters of WINDOW and their values. |
| 1713 | WINDOW defaults to the selected window. The return value is a list of |
| 1714 | elements of the form (PARAMETER . VALUE). */) |
| 1715 | (Lisp_Object window) |
| 1716 | { |
| 1717 | return Fcopy_alist (decode_any_window (window)->window_parameters); |
| 1718 | } |
| 1719 | |
| 1720 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, |
| 1721 | 2, 2, 0, |
| 1722 | doc: /* Return WINDOW's value for PARAMETER. |
| 1723 | WINDOW defaults to the selected window. */) |
| 1724 | (Lisp_Object window, Lisp_Object parameter) |
| 1725 | { |
| 1726 | Lisp_Object result; |
| 1727 | |
| 1728 | result = Fassq (parameter, decode_any_window (window)->window_parameters); |
| 1729 | return CDR_SAFE (result); |
| 1730 | } |
| 1731 | |
| 1732 | DEFUN ("set-window-parameter", Fset_window_parameter, |
| 1733 | Sset_window_parameter, 3, 3, 0, |
| 1734 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
| 1735 | WINDOW defaults to the selected window. Return VALUE. */) |
| 1736 | (Lisp_Object window, Lisp_Object parameter, Lisp_Object value) |
| 1737 | { |
| 1738 | register struct window *w = decode_any_window (window); |
| 1739 | Lisp_Object old_alist_elt; |
| 1740 | |
| 1741 | old_alist_elt = Fassq (parameter, w->window_parameters); |
| 1742 | if (NILP (old_alist_elt)) |
| 1743 | w->window_parameters = Fcons (Fcons (parameter, value), w->window_parameters); |
| 1744 | else |
| 1745 | Fsetcdr (old_alist_elt, value); |
| 1746 | return value; |
| 1747 | } |
| 1748 | |
| 1749 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
| 1750 | 0, 1, 0, |
| 1751 | doc: /* Return the display-table that WINDOW is using. |
| 1752 | WINDOW defaults to the selected window. */) |
| 1753 | (Lisp_Object window) |
| 1754 | { |
| 1755 | return decode_window (window)->display_table; |
| 1756 | } |
| 1757 | |
| 1758 | /* Get the display table for use on window W. This is either W's |
| 1759 | display table or W's buffer's display table. Ignore the specified |
| 1760 | tables if they are not valid; if no valid table is specified, |
| 1761 | return 0. */ |
| 1762 | |
| 1763 | struct Lisp_Char_Table * |
| 1764 | window_display_table (struct window *w) |
| 1765 | { |
| 1766 | struct Lisp_Char_Table *dp = NULL; |
| 1767 | |
| 1768 | if (DISP_TABLE_P (w->display_table)) |
| 1769 | dp = XCHAR_TABLE (w->display_table); |
| 1770 | else if (BUFFERP (w->buffer)) |
| 1771 | { |
| 1772 | struct buffer *b = XBUFFER (w->buffer); |
| 1773 | |
| 1774 | if (DISP_TABLE_P (BVAR (b, display_table))) |
| 1775 | dp = XCHAR_TABLE (BVAR (b, display_table)); |
| 1776 | else if (DISP_TABLE_P (Vstandard_display_table)) |
| 1777 | dp = XCHAR_TABLE (Vstandard_display_table); |
| 1778 | } |
| 1779 | |
| 1780 | return dp; |
| 1781 | } |
| 1782 | |
| 1783 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
| 1784 | doc: /* Set WINDOW's display-table to TABLE. */) |
| 1785 | (register Lisp_Object window, Lisp_Object table) |
| 1786 | { |
| 1787 | register struct window *w; |
| 1788 | |
| 1789 | w = decode_window (window); |
| 1790 | w->display_table = table; |
| 1791 | return table; |
| 1792 | } |
| 1793 | \f |
| 1794 | /* Record info on buffer window W is displaying |
| 1795 | when it is about to cease to display that buffer. */ |
| 1796 | static void |
| 1797 | unshow_buffer (register struct window *w) |
| 1798 | { |
| 1799 | Lisp_Object buf; |
| 1800 | struct buffer *b; |
| 1801 | |
| 1802 | buf = w->buffer; |
| 1803 | b = XBUFFER (buf); |
| 1804 | if (b != XMARKER (w->pointm)->buffer) |
| 1805 | abort (); |
| 1806 | |
| 1807 | #if 0 |
| 1808 | if (w == XWINDOW (selected_window) |
| 1809 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) |
| 1810 | /* Do this except when the selected window's buffer |
| 1811 | is being removed from some other window. */ |
| 1812 | #endif |
| 1813 | /* last_window_start records the start position that this buffer |
| 1814 | had in the last window to be disconnected from it. |
| 1815 | Now that this statement is unconditional, |
| 1816 | it is possible for the buffer to be displayed in the |
| 1817 | selected window, while last_window_start reflects another |
| 1818 | window which was recently showing the same buffer. |
| 1819 | Some people might say that might be a good thing. Let's see. */ |
| 1820 | b->last_window_start = marker_position (w->start); |
| 1821 | |
| 1822 | /* Point in the selected window's buffer |
| 1823 | is actually stored in that buffer, and the window's pointm isn't used. |
| 1824 | So don't clobber point in that buffer. */ |
| 1825 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
| 1826 | /* This line helps to fix Horsley's testbug.el bug. */ |
| 1827 | && !(WINDOWP (BVAR (b, last_selected_window)) |
| 1828 | && w != XWINDOW (BVAR (b, last_selected_window)) |
| 1829 | && EQ (buf, XWINDOW (BVAR (b, last_selected_window))->buffer))) |
| 1830 | temp_set_point_both (b, |
| 1831 | clip_to_bounds (BUF_BEGV (b), |
| 1832 | XMARKER (w->pointm)->charpos, |
| 1833 | BUF_ZV (b)), |
| 1834 | clip_to_bounds (BUF_BEGV_BYTE (b), |
| 1835 | marker_byte_position (w->pointm), |
| 1836 | BUF_ZV_BYTE (b))); |
| 1837 | |
| 1838 | if (WINDOWP (BVAR (b, last_selected_window)) |
| 1839 | && w == XWINDOW (BVAR (b, last_selected_window))) |
| 1840 | BVAR (b, last_selected_window) = Qnil; |
| 1841 | } |
| 1842 | |
| 1843 | /* Put NEW into the window structure in place of OLD. SETFLAG zero |
| 1844 | means change window structure only. Otherwise store geometry and |
| 1845 | other settings as well. */ |
| 1846 | static void |
| 1847 | replace_window (Lisp_Object old, Lisp_Object new, int setflag) |
| 1848 | { |
| 1849 | register Lisp_Object tem; |
| 1850 | register struct window *o = XWINDOW (old), *n = XWINDOW (new); |
| 1851 | |
| 1852 | /* If OLD is its frame's root window, then NEW is the new |
| 1853 | root window for that frame. */ |
| 1854 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
| 1855 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = new; |
| 1856 | |
| 1857 | if (setflag) |
| 1858 | { |
| 1859 | n->left_col = o->left_col; |
| 1860 | n->top_line = o->top_line; |
| 1861 | n->total_cols = o->total_cols; |
| 1862 | n->total_lines = o->total_lines; |
| 1863 | n->normal_cols = o->normal_cols; |
| 1864 | o->normal_cols = make_float (1.0); |
| 1865 | n->normal_lines = o->normal_lines; |
| 1866 | o->normal_lines = make_float (1.0); |
| 1867 | n->desired_matrix = n->current_matrix = 0; |
| 1868 | n->vscroll = 0; |
| 1869 | memset (&n->cursor, 0, sizeof (n->cursor)); |
| 1870 | memset (&n->last_cursor, 0, sizeof (n->last_cursor)); |
| 1871 | memset (&n->phys_cursor, 0, sizeof (n->phys_cursor)); |
| 1872 | n->phys_cursor_type = -1; |
| 1873 | n->phys_cursor_width = -1; |
| 1874 | n->must_be_updated_p = 0; |
| 1875 | n->pseudo_window_p = 0; |
| 1876 | XSETFASTINT (n->window_end_vpos, 0); |
| 1877 | XSETFASTINT (n->window_end_pos, 0); |
| 1878 | n->window_end_valid = Qnil; |
| 1879 | n->frozen_window_start_p = 0; |
| 1880 | } |
| 1881 | |
| 1882 | n->next = tem = o->next; |
| 1883 | if (!NILP (tem)) |
| 1884 | XWINDOW (tem)->prev = new; |
| 1885 | |
| 1886 | n->prev = tem = o->prev; |
| 1887 | if (!NILP (tem)) |
| 1888 | XWINDOW (tem)->next = new; |
| 1889 | |
| 1890 | n->parent = tem = o->parent; |
| 1891 | if (!NILP (tem)) |
| 1892 | { |
| 1893 | if (EQ (XWINDOW (tem)->vchild, old)) |
| 1894 | XWINDOW (tem)->vchild = new; |
| 1895 | if (EQ (XWINDOW (tem)->hchild, old)) |
| 1896 | XWINDOW (tem)->hchild = new; |
| 1897 | } |
| 1898 | } |
| 1899 | |
| 1900 | /* If window WINDOW and its parent window are iso-combined, merge |
| 1901 | WINDOW's children into those of its parent window and mark WINDOW as |
| 1902 | deleted. */ |
| 1903 | |
| 1904 | static void |
| 1905 | recombine_windows (Lisp_Object window) |
| 1906 | { |
| 1907 | struct window *w, *p, *c; |
| 1908 | Lisp_Object parent, child; |
| 1909 | int horflag; |
| 1910 | |
| 1911 | w = XWINDOW (window); |
| 1912 | parent = w->parent; |
| 1913 | if (!NILP (parent) && NILP (w->nest)) |
| 1914 | { |
| 1915 | p = XWINDOW (parent); |
| 1916 | if (((!NILP (p->vchild) && !NILP (w->vchild)) |
| 1917 | || (!NILP (p->hchild) && !NILP (w->hchild)))) |
| 1918 | /* WINDOW and PARENT are both either a vertical or a horizontal |
| 1919 | combination. */ |
| 1920 | { |
| 1921 | horflag = NILP (w->vchild); |
| 1922 | child = horflag ? w->hchild : w->vchild; |
| 1923 | c = XWINDOW (child); |
| 1924 | |
| 1925 | /* Splice WINDOW's children into its parent's children and |
| 1926 | assign new normal sizes. */ |
| 1927 | if (NILP (w->prev)) |
| 1928 | if (horflag) |
| 1929 | p->hchild = child; |
| 1930 | else |
| 1931 | p->vchild = child; |
| 1932 | else |
| 1933 | { |
| 1934 | c->prev = w->prev; |
| 1935 | XWINDOW (w->prev)->next = child; |
| 1936 | } |
| 1937 | |
| 1938 | while (c) |
| 1939 | { |
| 1940 | c->parent = parent; |
| 1941 | |
| 1942 | if (horflag) |
| 1943 | c->normal_cols |
| 1944 | = make_float (XFLOATINT (c->total_cols) |
| 1945 | / XFLOATINT (p->total_cols)); |
| 1946 | else |
| 1947 | c->normal_lines |
| 1948 | = make_float (XFLOATINT (c->total_lines) |
| 1949 | / XFLOATINT (p->total_lines)); |
| 1950 | |
| 1951 | if (NILP (c->next)) |
| 1952 | { |
| 1953 | if (!NILP (w->next)) |
| 1954 | { |
| 1955 | c->next = w->next; |
| 1956 | XWINDOW (c->next)->prev = child; |
| 1957 | } |
| 1958 | |
| 1959 | c = 0; |
| 1960 | } |
| 1961 | else |
| 1962 | { |
| 1963 | child = c->next; |
| 1964 | c = XWINDOW (child); |
| 1965 | } |
| 1966 | } |
| 1967 | |
| 1968 | /* WINDOW can be deleted now. */ |
| 1969 | w->vchild = w->hchild = Qnil; |
| 1970 | } |
| 1971 | } |
| 1972 | } |
| 1973 | |
| 1974 | /* If WINDOW can be deleted, delete it. */ |
| 1975 | static void |
| 1976 | delete_deletable_window (Lisp_Object window) |
| 1977 | { |
| 1978 | if (!NILP (call1 (Qwindow_deletable_p, window))) |
| 1979 | call1 (Qdelete_window, window); |
| 1980 | } |
| 1981 | \f |
| 1982 | /*********************************************************************** |
| 1983 | Window List |
| 1984 | ***********************************************************************/ |
| 1985 | |
| 1986 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
| 1987 | pointer. This is a callback function for foreach_window, used in |
| 1988 | the window_list function. */ |
| 1989 | |
| 1990 | static int |
| 1991 | add_window_to_list (struct window *w, void *user_data) |
| 1992 | { |
| 1993 | Lisp_Object *list = (Lisp_Object *) user_data; |
| 1994 | Lisp_Object window; |
| 1995 | XSETWINDOW (window, w); |
| 1996 | *list = Fcons (window, *list); |
| 1997 | return 1; |
| 1998 | } |
| 1999 | |
| 2000 | |
| 2001 | /* Return a list of all windows, for use by next_window. If |
| 2002 | Vwindow_list is a list, return that list. Otherwise, build a new |
| 2003 | list, cache it in Vwindow_list, and return that. */ |
| 2004 | |
| 2005 | static Lisp_Object |
| 2006 | window_list (void) |
| 2007 | { |
| 2008 | if (!CONSP (Vwindow_list)) |
| 2009 | { |
| 2010 | Lisp_Object tail; |
| 2011 | |
| 2012 | Vwindow_list = Qnil; |
| 2013 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) |
| 2014 | { |
| 2015 | Lisp_Object args[2]; |
| 2016 | |
| 2017 | /* We are visiting windows in canonical order, and add |
| 2018 | new windows at the front of args[1], which means we |
| 2019 | have to reverse this list at the end. */ |
| 2020 | args[1] = Qnil; |
| 2021 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); |
| 2022 | args[0] = Vwindow_list; |
| 2023 | args[1] = Fnreverse (args[1]); |
| 2024 | Vwindow_list = Fnconc (2, args); |
| 2025 | } |
| 2026 | } |
| 2027 | |
| 2028 | return Vwindow_list; |
| 2029 | } |
| 2030 | |
| 2031 | |
| 2032 | /* Value is non-zero if WINDOW satisfies the constraints given by |
| 2033 | OWINDOW, MINIBUF and ALL_FRAMES. |
| 2034 | |
| 2035 | MINIBUF t means WINDOW may be minibuffer windows. |
| 2036 | `lambda' means WINDOW may not be a minibuffer window. |
| 2037 | a window means a specific minibuffer window |
| 2038 | |
| 2039 | ALL_FRAMES t means search all frames, |
| 2040 | nil means search just current frame, |
| 2041 | `visible' means search just visible frames on the |
| 2042 | current terminal, |
| 2043 | 0 means search visible and iconified frames on the |
| 2044 | current terminal, |
| 2045 | a window means search the frame that window belongs to, |
| 2046 | a frame means consider windows on that frame, only. */ |
| 2047 | |
| 2048 | static int |
| 2049 | candidate_window_p (Lisp_Object window, Lisp_Object owindow, Lisp_Object minibuf, Lisp_Object all_frames) |
| 2050 | { |
| 2051 | struct window *w = XWINDOW (window); |
| 2052 | struct frame *f = XFRAME (w->frame); |
| 2053 | int candidate_p = 1; |
| 2054 | |
| 2055 | if (!BUFFERP (w->buffer)) |
| 2056 | candidate_p = 0; |
| 2057 | else if (MINI_WINDOW_P (w) |
| 2058 | && (EQ (minibuf, Qlambda) |
| 2059 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) |
| 2060 | { |
| 2061 | /* If MINIBUF is `lambda' don't consider any mini-windows. |
| 2062 | If it is a window, consider only that one. */ |
| 2063 | candidate_p = 0; |
| 2064 | } |
| 2065 | else if (EQ (all_frames, Qt)) |
| 2066 | candidate_p = 1; |
| 2067 | else if (NILP (all_frames)) |
| 2068 | { |
| 2069 | xassert (WINDOWP (owindow)); |
| 2070 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); |
| 2071 | } |
| 2072 | else if (EQ (all_frames, Qvisible)) |
| 2073 | { |
| 2074 | FRAME_SAMPLE_VISIBILITY (f); |
| 2075 | candidate_p = FRAME_VISIBLE_P (f) |
| 2076 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
| 2077 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
| 2078 | |
| 2079 | } |
| 2080 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) |
| 2081 | { |
| 2082 | FRAME_SAMPLE_VISIBILITY (f); |
| 2083 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
| 2084 | #ifdef HAVE_X_WINDOWS |
| 2085 | /* Yuck!! If we've just created the frame and the |
| 2086 | window-manager requested the user to place it |
| 2087 | manually, the window may still not be considered |
| 2088 | `visible'. I'd argue it should be at least |
| 2089 | something like `iconified', but don't know how to do |
| 2090 | that yet. --Stef */ |
| 2091 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible |
| 2092 | && !f->output_data.x->has_been_visible) |
| 2093 | #endif |
| 2094 | ) |
| 2095 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
| 2096 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
| 2097 | } |
| 2098 | else if (WINDOWP (all_frames)) |
| 2099 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) |
| 2100 | || EQ (XWINDOW (all_frames)->frame, w->frame) |
| 2101 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); |
| 2102 | else if (FRAMEP (all_frames)) |
| 2103 | candidate_p = EQ (all_frames, w->frame); |
| 2104 | |
| 2105 | return candidate_p; |
| 2106 | } |
| 2107 | |
| 2108 | |
| 2109 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and |
| 2110 | Fwindow_list. See candidate_window_p for the meaning of WINDOW, |
| 2111 | MINIBUF, and ALL_FRAMES. */ |
| 2112 | |
| 2113 | static void |
| 2114 | decode_next_window_args (Lisp_Object *window, Lisp_Object *minibuf, Lisp_Object *all_frames) |
| 2115 | { |
| 2116 | if (NILP (*window)) |
| 2117 | *window = selected_window; |
| 2118 | else |
| 2119 | CHECK_LIVE_WINDOW (*window); |
| 2120 | |
| 2121 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
| 2122 | does. */ |
| 2123 | if (NILP (*minibuf)) |
| 2124 | *minibuf = minibuf_level ? minibuf_window : Qlambda; |
| 2125 | else if (!EQ (*minibuf, Qt)) |
| 2126 | *minibuf = Qlambda; |
| 2127 | |
| 2128 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
| 2129 | => count none of them, or a specific minibuffer window (the |
| 2130 | active one) to count. */ |
| 2131 | |
| 2132 | /* ALL_FRAMES nil doesn't specify which frames to include. */ |
| 2133 | if (NILP (*all_frames)) |
| 2134 | *all_frames = (!EQ (*minibuf, Qlambda) |
| 2135 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) |
| 2136 | : Qnil); |
| 2137 | else if (EQ (*all_frames, Qvisible)) |
| 2138 | ; |
| 2139 | else if (EQ (*all_frames, make_number (0))) |
| 2140 | ; |
| 2141 | else if (FRAMEP (*all_frames)) |
| 2142 | ; |
| 2143 | else if (!EQ (*all_frames, Qt)) |
| 2144 | *all_frames = Qnil; |
| 2145 | } |
| 2146 | |
| 2147 | |
| 2148 | /* Return the next or previous window of WINDOW in cyclic ordering |
| 2149 | of windows. NEXT_P non-zero means return the next window. See the |
| 2150 | documentation string of next-window for the meaning of MINIBUF and |
| 2151 | ALL_FRAMES. */ |
| 2152 | |
| 2153 | static Lisp_Object |
| 2154 | next_window (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames, int next_p) |
| 2155 | { |
| 2156 | decode_next_window_args (&window, &minibuf, &all_frames); |
| 2157 | |
| 2158 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
| 2159 | return the first window on the frame. */ |
| 2160 | if (FRAMEP (all_frames) |
| 2161 | && !EQ (all_frames, XWINDOW (window)->frame)) |
| 2162 | return Fframe_first_window (all_frames); |
| 2163 | |
| 2164 | if (next_p) |
| 2165 | { |
| 2166 | Lisp_Object list; |
| 2167 | |
| 2168 | /* Find WINDOW in the list of all windows. */ |
| 2169 | list = Fmemq (window, window_list ()); |
| 2170 | |
| 2171 | /* Scan forward from WINDOW to the end of the window list. */ |
| 2172 | if (CONSP (list)) |
| 2173 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) |
| 2174 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
| 2175 | break; |
| 2176 | |
| 2177 | /* Scan from the start of the window list up to WINDOW. */ |
| 2178 | if (!CONSP (list)) |
| 2179 | for (list = Vwindow_list; |
| 2180 | CONSP (list) && !EQ (XCAR (list), window); |
| 2181 | list = XCDR (list)) |
| 2182 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
| 2183 | break; |
| 2184 | |
| 2185 | if (CONSP (list)) |
| 2186 | window = XCAR (list); |
| 2187 | } |
| 2188 | else |
| 2189 | { |
| 2190 | Lisp_Object candidate, list; |
| 2191 | |
| 2192 | /* Scan through the list of windows for candidates. If there are |
| 2193 | candidate windows in front of WINDOW, the last one of these |
| 2194 | is the one we want. If there are candidates following WINDOW |
| 2195 | in the list, again the last one of these is the one we want. */ |
| 2196 | candidate = Qnil; |
| 2197 | for (list = window_list (); CONSP (list); list = XCDR (list)) |
| 2198 | { |
| 2199 | if (EQ (XCAR (list), window)) |
| 2200 | { |
| 2201 | if (WINDOWP (candidate)) |
| 2202 | break; |
| 2203 | } |
| 2204 | else if (candidate_window_p (XCAR (list), window, minibuf, |
| 2205 | all_frames)) |
| 2206 | candidate = XCAR (list); |
| 2207 | } |
| 2208 | |
| 2209 | if (WINDOWP (candidate)) |
| 2210 | window = candidate; |
| 2211 | } |
| 2212 | |
| 2213 | return window; |
| 2214 | } |
| 2215 | |
| 2216 | |
| 2217 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
| 2218 | doc: /* Return window following WINDOW in cyclic ordering of windows. |
| 2219 | WINDOW must be a live window and defaults to the selected one. The |
| 2220 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to |
| 2221 | consider. |
| 2222 | |
| 2223 | MINIBUF nil or omitted means consider the minibuffer window only if the |
| 2224 | minibuffer is active. MINIBUF t means consider the minibuffer window |
| 2225 | even if the minibuffer is not active. Any other value means do not |
| 2226 | consider the minibuffer window even if the minibuffer is active. |
| 2227 | |
| 2228 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, |
| 2229 | plus the minibuffer window if specified by the MINIBUF argument. If the |
| 2230 | minibuffer counts, consider all windows on all frames that share that |
| 2231 | minibuffer too. The following non-nil values of ALL-FRAMES have special |
| 2232 | meanings: |
| 2233 | |
| 2234 | - t means consider all windows on all existing frames. |
| 2235 | |
| 2236 | - `visible' means consider all windows on all visible frames. |
| 2237 | |
| 2238 | - 0 (the number zero) means consider all windows on all visible and |
| 2239 | iconified frames. |
| 2240 | |
| 2241 | - A frame means consider all windows on that frame only. |
| 2242 | |
| 2243 | Anything else means consider all windows on WINDOW's frame and no |
| 2244 | others. |
| 2245 | |
| 2246 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use |
| 2247 | `next-window' to iterate through the entire cycle of acceptable |
| 2248 | windows, eventually ending up back at the window you started with. |
| 2249 | `previous-window' traverses the same cycle, in the reverse order. */) |
| 2250 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
| 2251 | { |
| 2252 | return next_window (window, minibuf, all_frames, 1); |
| 2253 | } |
| 2254 | |
| 2255 | |
| 2256 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
| 2257 | doc: /* Return window preceding WINDOW in cyclic ordering of windows. |
| 2258 | WINDOW must be a live window and defaults to the selected one. The |
| 2259 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to |
| 2260 | consider. |
| 2261 | |
| 2262 | MINIBUF nil or omitted means consider the minibuffer window only if the |
| 2263 | minibuffer is active. MINIBUF t means consider the minibuffer window |
| 2264 | even if the minibuffer is not active. Any other value means do not |
| 2265 | consider the minibuffer window even if the minibuffer is active. |
| 2266 | |
| 2267 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, |
| 2268 | plus the minibuffer window if specified by the MINIBUF argument. If the |
| 2269 | minibuffer counts, consider all windows on all frames that share that |
| 2270 | minibuffer too. The following non-nil values of ALL-FRAMES have special |
| 2271 | meanings: |
| 2272 | |
| 2273 | - t means consider all windows on all existing frames. |
| 2274 | |
| 2275 | - `visible' means consider all windows on all visible frames. |
| 2276 | |
| 2277 | - 0 (the number zero) means consider all windows on all visible and |
| 2278 | iconified frames. |
| 2279 | |
| 2280 | - A frame means consider all windows on that frame only. |
| 2281 | |
| 2282 | Anything else means consider all windows on WINDOW's frame and no |
| 2283 | others. |
| 2284 | |
| 2285 | If you use consistent values for MINIBUF and ALL-FRAMES, you can |
| 2286 | use `previous-window' to iterate through the entire cycle of |
| 2287 | acceptable windows, eventually ending up back at the window you |
| 2288 | started with. `next-window' traverses the same cycle, in the |
| 2289 | reverse order. */) |
| 2290 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
| 2291 | { |
| 2292 | return next_window (window, minibuf, all_frames, 0); |
| 2293 | } |
| 2294 | |
| 2295 | |
| 2296 | /* Return a list of windows in cyclic ordering. Arguments are like |
| 2297 | for `next-window'. */ |
| 2298 | |
| 2299 | static Lisp_Object |
| 2300 | window_list_1 (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
| 2301 | { |
| 2302 | Lisp_Object tail, list, rest; |
| 2303 | |
| 2304 | decode_next_window_args (&window, &minibuf, &all_frames); |
| 2305 | list = Qnil; |
| 2306 | |
| 2307 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
| 2308 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
| 2309 | list = Fcons (XCAR (tail), list); |
| 2310 | |
| 2311 | /* Rotate the list to start with WINDOW. */ |
| 2312 | list = Fnreverse (list); |
| 2313 | rest = Fmemq (window, list); |
| 2314 | if (!NILP (rest) && !EQ (rest, list)) |
| 2315 | { |
| 2316 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
| 2317 | ; |
| 2318 | XSETCDR (tail, Qnil); |
| 2319 | list = nconc2 (rest, list); |
| 2320 | } |
| 2321 | return list; |
| 2322 | } |
| 2323 | |
| 2324 | |
| 2325 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, |
| 2326 | doc: /* Return a list of windows on FRAME, starting with WINDOW. |
| 2327 | FRAME nil or omitted means use the selected frame. |
| 2328 | WINDOW nil or omitted means use the selected window. |
| 2329 | MINIBUF t means include the minibuffer window, even if it isn't active. |
| 2330 | MINIBUF nil or omitted means include the minibuffer window only |
| 2331 | if it's active. |
| 2332 | MINIBUF neither nil nor t means never include the minibuffer window. */) |
| 2333 | (Lisp_Object frame, Lisp_Object minibuf, Lisp_Object window) |
| 2334 | { |
| 2335 | if (NILP (window)) |
| 2336 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
| 2337 | CHECK_WINDOW (window); |
| 2338 | if (NILP (frame)) |
| 2339 | frame = selected_frame; |
| 2340 | |
| 2341 | if (!EQ (frame, XWINDOW (window)->frame)) |
| 2342 | error ("Window is on a different frame"); |
| 2343 | |
| 2344 | return window_list_1 (window, minibuf, frame); |
| 2345 | } |
| 2346 | |
| 2347 | |
| 2348 | DEFUN ("window-list-1", Fwindow_list_1, Swindow_list_1, 0, 3, 0, |
| 2349 | doc: /* Return a list of all live windows. |
| 2350 | WINDOW specifies the first window to list and defaults to the selected |
| 2351 | window. |
| 2352 | |
| 2353 | Optional argument MINIBUF nil or omitted means consider the minibuffer |
| 2354 | window only if the minibuffer is active. MINIBUF t means consider the |
| 2355 | minibuffer window even if the minibuffer is not active. Any other value |
| 2356 | means do not consider the minibuffer window even if the minibuffer is |
| 2357 | active. |
| 2358 | |
| 2359 | Optional argument ALL-FRAMES nil or omitted means consider all windows |
| 2360 | on WINDOW's frame, plus the minibuffer window if specified by the |
| 2361 | MINIBUF argument. If the minibuffer counts, consider all windows on all |
| 2362 | frames that share that minibuffer too. The following non-nil values of |
| 2363 | ALL-FRAMES have special meanings: |
| 2364 | |
| 2365 | - t means consider all windows on all existing frames. |
| 2366 | |
| 2367 | - `visible' means consider all windows on all visible frames. |
| 2368 | |
| 2369 | - 0 (the number zero) means consider all windows on all visible and |
| 2370 | iconified frames. |
| 2371 | |
| 2372 | - A frame means consider all windows on that frame only. |
| 2373 | |
| 2374 | Anything else means consider all windows on WINDOW's frame and no |
| 2375 | others. |
| 2376 | |
| 2377 | If WINDOW is not on the list of windows returned, some other window will |
| 2378 | be listed first but no error is signalled. */) |
| 2379 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
| 2380 | { |
| 2381 | return window_list_1 (window, minibuf, all_frames); |
| 2382 | } |
| 2383 | \f |
| 2384 | /* Look at all windows, performing an operation specified by TYPE |
| 2385 | with argument OBJ. |
| 2386 | If FRAMES is Qt, look at all frames; |
| 2387 | Qnil, look at just the selected frame; |
| 2388 | Qvisible, look at visible frames; |
| 2389 | a frame, just look at windows on that frame. |
| 2390 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
| 2391 | |
| 2392 | enum window_loop |
| 2393 | { |
| 2394 | WINDOW_LOOP_UNUSED, |
| 2395 | GET_BUFFER_WINDOW, /* Arg is buffer */ |
| 2396 | REPLACE_BUFFER_IN_WINDOWS_SAFELY, /* Arg is buffer */ |
| 2397 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ |
| 2398 | CHECK_ALL_WINDOWS |
| 2399 | }; |
| 2400 | |
| 2401 | static Lisp_Object |
| 2402 | window_loop (enum window_loop type, Lisp_Object obj, int mini, Lisp_Object frames) |
| 2403 | { |
| 2404 | Lisp_Object window, windows, best_window, frame_arg; |
| 2405 | int frame_best_window_flag = 0; |
| 2406 | struct frame *f; |
| 2407 | struct gcpro gcpro1; |
| 2408 | |
| 2409 | /* If we're only looping through windows on a particular frame, |
| 2410 | frame points to that frame. If we're looping through windows |
| 2411 | on all frames, frame is 0. */ |
| 2412 | if (FRAMEP (frames)) |
| 2413 | f = XFRAME (frames); |
| 2414 | else if (NILP (frames)) |
| 2415 | f = SELECTED_FRAME (); |
| 2416 | else |
| 2417 | f = NULL; |
| 2418 | |
| 2419 | if (f) |
| 2420 | frame_arg = Qlambda; |
| 2421 | else if (EQ (frames, make_number (0))) |
| 2422 | frame_arg = frames; |
| 2423 | else if (EQ (frames, Qvisible)) |
| 2424 | frame_arg = frames; |
| 2425 | else |
| 2426 | frame_arg = Qt; |
| 2427 | |
| 2428 | /* frame_arg is Qlambda to stick to one frame, |
| 2429 | Qvisible to consider all visible frames, |
| 2430 | or Qt otherwise. */ |
| 2431 | |
| 2432 | /* Pick a window to start with. */ |
| 2433 | if (WINDOWP (obj)) |
| 2434 | window = obj; |
| 2435 | else if (f) |
| 2436 | window = FRAME_SELECTED_WINDOW (f); |
| 2437 | else |
| 2438 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
| 2439 | |
| 2440 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
| 2441 | GCPRO1 (windows); |
| 2442 | best_window = Qnil; |
| 2443 | |
| 2444 | for (; CONSP (windows); windows = XCDR (windows)) |
| 2445 | { |
| 2446 | struct window *w; |
| 2447 | |
| 2448 | window = XCAR (windows); |
| 2449 | w = XWINDOW (window); |
| 2450 | |
| 2451 | /* Note that we do not pay attention here to whether the frame |
| 2452 | is visible, since Fwindow_list skips non-visible frames if |
| 2453 | that is desired, under the control of frame_arg. */ |
| 2454 | if (!MINI_WINDOW_P (w) |
| 2455 | /* For REPLACE_BUFFER_IN_WINDOWS_SAFELY, we must always |
| 2456 | consider all windows. */ |
| 2457 | || type == REPLACE_BUFFER_IN_WINDOWS_SAFELY |
| 2458 | || (mini && minibuf_level > 0)) |
| 2459 | switch (type) |
| 2460 | { |
| 2461 | case GET_BUFFER_WINDOW: |
| 2462 | if (EQ (w->buffer, obj) |
| 2463 | /* Don't find any minibuffer window except the one that |
| 2464 | is currently in use. */ |
| 2465 | && (MINI_WINDOW_P (w) ? EQ (window, minibuf_window) : 1)) |
| 2466 | { |
| 2467 | if (EQ (window, selected_window)) |
| 2468 | /* Preferably return the selected window. */ |
| 2469 | RETURN_UNGCPRO (window); |
| 2470 | else if (EQ (XWINDOW (window)->frame, selected_frame) |
| 2471 | && !frame_best_window_flag) |
| 2472 | /* Prefer windows on the current frame (but don't |
| 2473 | choose another one if we have one already). */ |
| 2474 | { |
| 2475 | best_window = window; |
| 2476 | frame_best_window_flag = 1; |
| 2477 | } |
| 2478 | else if (NILP (best_window)) |
| 2479 | best_window = window; |
| 2480 | } |
| 2481 | break; |
| 2482 | |
| 2483 | case REPLACE_BUFFER_IN_WINDOWS_SAFELY: |
| 2484 | /* We could simply check whether the buffer shown by window |
| 2485 | is live, and show another buffer in case it isn't. */ |
| 2486 | if (EQ (w->buffer, obj)) |
| 2487 | { |
| 2488 | /* Undedicate WINDOW. */ |
| 2489 | w->dedicated = Qnil; |
| 2490 | /* Make WINDOW show the buffer returned by |
| 2491 | other_buffer_safely, don't run any hooks. */ |
| 2492 | set_window_buffer |
| 2493 | (window, other_buffer_safely (w->buffer), 0, 0); |
| 2494 | /* If WINDOW is the selected window, make its buffer |
| 2495 | current. But do so only if the window shows the |
| 2496 | current buffer (Bug#6454). */ |
| 2497 | if (EQ (window, selected_window) |
| 2498 | && XBUFFER (w->buffer) == current_buffer) |
| 2499 | Fset_buffer (w->buffer); |
| 2500 | } |
| 2501 | break; |
| 2502 | |
| 2503 | case REDISPLAY_BUFFER_WINDOWS: |
| 2504 | if (EQ (w->buffer, obj)) |
| 2505 | { |
| 2506 | mark_window_display_accurate (window, 0); |
| 2507 | w->update_mode_line = Qt; |
| 2508 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; |
| 2509 | ++update_mode_lines; |
| 2510 | best_window = window; |
| 2511 | } |
| 2512 | break; |
| 2513 | |
| 2514 | /* Check for a window that has a killed buffer. */ |
| 2515 | case CHECK_ALL_WINDOWS: |
| 2516 | if (! NILP (w->buffer) |
| 2517 | && NILP (BVAR (XBUFFER (w->buffer), name))) |
| 2518 | abort (); |
| 2519 | break; |
| 2520 | |
| 2521 | case WINDOW_LOOP_UNUSED: |
| 2522 | break; |
| 2523 | } |
| 2524 | } |
| 2525 | |
| 2526 | UNGCPRO; |
| 2527 | return best_window; |
| 2528 | } |
| 2529 | |
| 2530 | /* Used for debugging. Abort if any window has a dead buffer. */ |
| 2531 | |
| 2532 | extern void check_all_windows (void) EXTERNALLY_VISIBLE; |
| 2533 | void |
| 2534 | check_all_windows (void) |
| 2535 | { |
| 2536 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); |
| 2537 | } |
| 2538 | |
| 2539 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0, |
| 2540 | doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none. |
| 2541 | BUFFER-OR-NAME may be a buffer or a buffer name and defaults to |
| 2542 | the current buffer. |
| 2543 | |
| 2544 | The optional argument ALL-FRAMES specifies the frames to consider: |
| 2545 | |
| 2546 | - t means consider all windows on all existing frames. |
| 2547 | |
| 2548 | - `visible' means consider all windows on all visible frames. |
| 2549 | |
| 2550 | - 0 (the number zero) means consider all windows on all visible |
| 2551 | and iconified frames. |
| 2552 | |
| 2553 | - A frame means consider all windows on that frame only. |
| 2554 | |
| 2555 | Any other value of ALL-FRAMES means consider all windows on the |
| 2556 | selected frame and no others. */) |
| 2557 | (Lisp_Object buffer_or_name, Lisp_Object all_frames) |
| 2558 | { |
| 2559 | Lisp_Object buffer; |
| 2560 | |
| 2561 | if (NILP (buffer_or_name)) |
| 2562 | buffer = Fcurrent_buffer (); |
| 2563 | else |
| 2564 | buffer = Fget_buffer (buffer_or_name); |
| 2565 | |
| 2566 | if (BUFFERP (buffer)) |
| 2567 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, all_frames); |
| 2568 | else |
| 2569 | return Qnil; |
| 2570 | } |
| 2571 | |
| 2572 | static Lisp_Object |
| 2573 | resize_root_window (Lisp_Object window, Lisp_Object delta, Lisp_Object horizontal, Lisp_Object ignore) |
| 2574 | { |
| 2575 | return call4 (Qwindow_resize_root_window, window, delta, horizontal, ignore); |
| 2576 | } |
| 2577 | |
| 2578 | |
| 2579 | DEFUN ("delete-other-windows-internal", Fdelete_other_windows_internal, |
| 2580 | Sdelete_other_windows_internal, 0, 2, "", |
| 2581 | doc: /* Make WINDOW fill its frame. |
| 2582 | Only the frame WINDOW is on is affected. WINDOW may be any window and |
| 2583 | defaults to the selected one. |
| 2584 | |
| 2585 | Optional argument ROOT, if non-nil, must specify an internal window |
| 2586 | containing WINDOW as a subwindow. If this is the case, replace ROOT by |
| 2587 | WINDOW and leave alone any windows not contained in ROOT. |
| 2588 | |
| 2589 | When WINDOW is live try to reduce display jumps by keeping the text |
| 2590 | previously visible in WINDOW in the same place on the frame. Doing this |
| 2591 | depends on the value of (window-start WINDOW), so if calling this |
| 2592 | function in a program gives strange scrolling, make sure the |
| 2593 | window-start value is reasonable when this function is called. */) |
| 2594 | (Lisp_Object window, Lisp_Object root) |
| 2595 | { |
| 2596 | struct window *w, *r, *s; |
| 2597 | struct frame *f; |
| 2598 | Lisp_Object sibling, pwindow, swindow IF_LINT (= Qnil), delta; |
| 2599 | EMACS_INT startpos IF_LINT (= 0); |
| 2600 | int top IF_LINT (= 0), new_top, resize_failed; |
| 2601 | |
| 2602 | w = decode_any_window (window); |
| 2603 | XSETWINDOW (window, w); |
| 2604 | f = XFRAME (w->frame); |
| 2605 | |
| 2606 | if (NILP (root)) |
| 2607 | /* ROOT is the frame's root window. */ |
| 2608 | { |
| 2609 | root = FRAME_ROOT_WINDOW (f); |
| 2610 | r = XWINDOW (root); |
| 2611 | } |
| 2612 | else |
| 2613 | /* ROOT must be an ancestor of WINDOW. */ |
| 2614 | { |
| 2615 | r = decode_any_window (root); |
| 2616 | pwindow = XWINDOW (window)->parent; |
| 2617 | while (!NILP (pwindow)) |
| 2618 | if (EQ (pwindow, root)) |
| 2619 | break; |
| 2620 | else |
| 2621 | pwindow = XWINDOW (pwindow)->parent; |
| 2622 | if (!EQ (pwindow, root)) |
| 2623 | error ("Specified root is not an ancestor of specified window"); |
| 2624 | } |
| 2625 | |
| 2626 | if (EQ (window, root)) |
| 2627 | /* A noop. */ |
| 2628 | return Qnil; |
| 2629 | /* I don't understand the "top > 0" part below. If we deal with a |
| 2630 | standalone minibuffer it would have been caught by the preceding |
| 2631 | test. */ |
| 2632 | else if (MINI_WINDOW_P (w)) /* && top > 0) */ |
| 2633 | error ("Can't expand minibuffer to full frame"); |
| 2634 | |
| 2635 | if (!NILP (w->buffer)) |
| 2636 | { |
| 2637 | startpos = marker_position (w->start); |
| 2638 | top = WINDOW_TOP_EDGE_LINE (w) |
| 2639 | - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
| 2640 | /* Make sure WINDOW is the frame's selected window. */ |
| 2641 | if (!EQ (window, FRAME_SELECTED_WINDOW (f))) |
| 2642 | { |
| 2643 | if (EQ (selected_frame, w->frame)) |
| 2644 | Fselect_window (window, Qnil); |
| 2645 | else |
| 2646 | FRAME_SELECTED_WINDOW (f) = window; |
| 2647 | } |
| 2648 | } |
| 2649 | else |
| 2650 | { |
| 2651 | /* See if the frame's selected window is a subwindow of WINDOW, by |
| 2652 | finding all the selected window's parents and comparing each |
| 2653 | one with WINDOW. If it isn't we need a new selected window for |
| 2654 | this frame. */ |
| 2655 | swindow = FRAME_SELECTED_WINDOW (f); |
| 2656 | while (1) |
| 2657 | { |
| 2658 | pwindow = swindow; |
| 2659 | while (!NILP (pwindow) && !EQ (window, pwindow)) |
| 2660 | pwindow = XWINDOW (pwindow)->parent; |
| 2661 | |
| 2662 | if (EQ (window, pwindow)) |
| 2663 | /* If WINDOW is an ancestor of SWINDOW, then SWINDOW is ok |
| 2664 | as the new selected window. */ |
| 2665 | break; |
| 2666 | else |
| 2667 | /* Else try the previous window of SWINDOW. */ |
| 2668 | swindow = Fprevious_window (swindow, Qlambda, Qnil); |
| 2669 | } |
| 2670 | |
| 2671 | if (!EQ (swindow, FRAME_SELECTED_WINDOW (f))) |
| 2672 | { |
| 2673 | if (EQ (selected_frame, w->frame)) |
| 2674 | Fselect_window (swindow, Qnil); |
| 2675 | else |
| 2676 | FRAME_SELECTED_WINDOW (f) = swindow; |
| 2677 | } |
| 2678 | } |
| 2679 | |
| 2680 | BLOCK_INPUT; |
| 2681 | free_window_matrices (r); |
| 2682 | |
| 2683 | windows_or_buffers_changed++; |
| 2684 | Vwindow_list = Qnil; |
| 2685 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
| 2686 | resize_failed = 0; |
| 2687 | |
| 2688 | if (NILP (w->buffer)) |
| 2689 | { |
| 2690 | /* Resize subwindows vertically. */ |
| 2691 | XSETINT (delta, XINT (r->total_lines) - XINT (w->total_lines)); |
| 2692 | w->top_line = r->top_line; |
| 2693 | resize_root_window (window, delta, Qnil, Qnil); |
| 2694 | if (window_resize_check (w, 0)) |
| 2695 | window_resize_apply (w, 0); |
| 2696 | else |
| 2697 | { |
| 2698 | resize_root_window (window, delta, Qnil, Qt); |
| 2699 | if (window_resize_check (w, 0)) |
| 2700 | window_resize_apply (w, 0); |
| 2701 | else |
| 2702 | resize_failed = 1; |
| 2703 | } |
| 2704 | |
| 2705 | /* Resize subwindows horizontally. */ |
| 2706 | if (!resize_failed) |
| 2707 | { |
| 2708 | w->left_col = r->left_col; |
| 2709 | XSETINT (delta, XINT (r->total_cols) - XINT (w->total_cols)); |
| 2710 | w->left_col = r->left_col; |
| 2711 | resize_root_window (window, delta, Qt, Qnil); |
| 2712 | if (window_resize_check (w, 1)) |
| 2713 | window_resize_apply (w, 1); |
| 2714 | else |
| 2715 | { |
| 2716 | resize_root_window (window, delta, Qt, Qt); |
| 2717 | if (window_resize_check (w, 1)) |
| 2718 | window_resize_apply (w, 1); |
| 2719 | else |
| 2720 | resize_failed = 1; |
| 2721 | } |
| 2722 | } |
| 2723 | |
| 2724 | if (resize_failed) |
| 2725 | /* Play safe, if we still can ... */ |
| 2726 | { |
| 2727 | window = swindow; |
| 2728 | w = XWINDOW (window); |
| 2729 | } |
| 2730 | } |
| 2731 | |
| 2732 | /* Cleanly unlink WINDOW from window-tree. */ |
| 2733 | if (!NILP (w->prev)) |
| 2734 | /* Get SIBLING above (on the left of) WINDOW. */ |
| 2735 | { |
| 2736 | sibling = w->prev; |
| 2737 | s = XWINDOW (sibling); |
| 2738 | s->next = w->next; |
| 2739 | if (!NILP (s->next)) |
| 2740 | XWINDOW (s->next)->prev = sibling; |
| 2741 | } |
| 2742 | else |
| 2743 | /* Get SIBLING below (on the right of) WINDOW. */ |
| 2744 | { |
| 2745 | sibling = w->next; |
| 2746 | s = XWINDOW (sibling); |
| 2747 | s->prev = Qnil; |
| 2748 | if (!NILP (XWINDOW (w->parent)->vchild)) |
| 2749 | XWINDOW (w->parent)->vchild = sibling; |
| 2750 | else |
| 2751 | XWINDOW (w->parent)->hchild = sibling; |
| 2752 | } |
| 2753 | |
| 2754 | /* Delete ROOT and all subwindows of ROOT. */ |
| 2755 | if (!NILP (r->vchild)) |
| 2756 | { |
| 2757 | delete_all_subwindows (r->vchild); |
| 2758 | r->vchild = Qnil; |
| 2759 | } |
| 2760 | else if (!NILP (r->hchild)) |
| 2761 | { |
| 2762 | delete_all_subwindows (r->hchild); |
| 2763 | r->hchild = Qnil; |
| 2764 | } |
| 2765 | |
| 2766 | replace_window (root, window, 1); |
| 2767 | |
| 2768 | /* Reset WINDOW's splits status. */ |
| 2769 | w->splits = Qnil; |
| 2770 | |
| 2771 | /* This must become SWINDOW anyway ....... */ |
| 2772 | if (!NILP (w->buffer) && !resize_failed) |
| 2773 | { |
| 2774 | /* Try to minimize scrolling, by setting the window start to the |
| 2775 | point will cause the text at the old window start to be at the |
| 2776 | same place on the frame. But don't try to do this if the |
| 2777 | window start is outside the visible portion (as might happen |
| 2778 | when the display is not current, due to typeahead). */ |
| 2779 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
| 2780 | if (new_top != top |
| 2781 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) |
| 2782 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
| 2783 | { |
| 2784 | struct position pos; |
| 2785 | struct buffer *obuf = current_buffer; |
| 2786 | |
| 2787 | Fset_buffer (w->buffer); |
| 2788 | /* This computation used to temporarily move point, but that |
| 2789 | can have unwanted side effects due to text properties. */ |
| 2790 | pos = *vmotion (startpos, -top, w); |
| 2791 | |
| 2792 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
| 2793 | w->window_end_valid = Qnil; |
| 2794 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
| 2795 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt |
| 2796 | : Qnil); |
| 2797 | /* We need to do this, so that the window-scroll-functions |
| 2798 | get called. */ |
| 2799 | w->optional_new_start = Qt; |
| 2800 | |
| 2801 | set_buffer_internal (obuf); |
| 2802 | } |
| 2803 | } |
| 2804 | |
| 2805 | adjust_glyphs (f); |
| 2806 | UNBLOCK_INPUT; |
| 2807 | |
| 2808 | run_window_configuration_change_hook (f); |
| 2809 | |
| 2810 | return Qnil; |
| 2811 | } |
| 2812 | |
| 2813 | |
| 2814 | void |
| 2815 | replace_buffer_in_windows (Lisp_Object buffer) |
| 2816 | { |
| 2817 | call1 (Qreplace_buffer_in_windows, buffer); |
| 2818 | } |
| 2819 | |
| 2820 | |
| 2821 | /* Safely replace BUFFER with some other buffer in all windows of all |
| 2822 | frames, even those on other keyboards. */ |
| 2823 | |
| 2824 | void |
| 2825 | replace_buffer_in_windows_safely (Lisp_Object buffer) |
| 2826 | { |
| 2827 | Lisp_Object tail, frame; |
| 2828 | |
| 2829 | /* A single call to window_loop won't do the job because it only |
| 2830 | considers frames on the current keyboard. So loop manually over |
| 2831 | frames, and handle each one. */ |
| 2832 | FOR_EACH_FRAME (tail, frame) |
| 2833 | window_loop (REPLACE_BUFFER_IN_WINDOWS_SAFELY, buffer, 1, frame); |
| 2834 | } |
| 2835 | \f |
| 2836 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the |
| 2837 | minimum allowable size. */ |
| 2838 | |
| 2839 | void |
| 2840 | check_frame_size (FRAME_PTR frame, int *rows, int *cols) |
| 2841 | { |
| 2842 | /* For height, we have to see: |
| 2843 | how many windows the frame has at minimum (one or two), |
| 2844 | and whether it has a menu bar or other special stuff at the top. */ |
| 2845 | int min_height |
| 2846 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) |
| 2847 | ? MIN_SAFE_WINDOW_HEIGHT |
| 2848 | : 2 * MIN_SAFE_WINDOW_HEIGHT); |
| 2849 | |
| 2850 | if (FRAME_TOP_MARGIN (frame) > 0) |
| 2851 | min_height += FRAME_TOP_MARGIN (frame); |
| 2852 | |
| 2853 | if (*rows < min_height) |
| 2854 | *rows = min_height; |
| 2855 | if (*cols < MIN_SAFE_WINDOW_WIDTH) |
| 2856 | *cols = MIN_SAFE_WINDOW_WIDTH; |
| 2857 | } |
| 2858 | |
| 2859 | /* Adjust the margins of window W if text area is too small. |
| 2860 | Return 1 if window width is ok after adjustment; 0 if window |
| 2861 | is still too narrow. */ |
| 2862 | |
| 2863 | static int |
| 2864 | adjust_window_margins (struct window *w) |
| 2865 | { |
| 2866 | int box_cols = (WINDOW_TOTAL_COLS (w) |
| 2867 | - WINDOW_FRINGE_COLS (w) |
| 2868 | - WINDOW_SCROLL_BAR_COLS (w)); |
| 2869 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) |
| 2870 | + WINDOW_RIGHT_MARGIN_COLS (w)); |
| 2871 | |
| 2872 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) |
| 2873 | return 1; |
| 2874 | |
| 2875 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) |
| 2876 | return 0; |
| 2877 | |
| 2878 | /* Window's text area is too narrow, but reducing the window |
| 2879 | margins will fix that. */ |
| 2880 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; |
| 2881 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) |
| 2882 | { |
| 2883 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) |
| 2884 | w->left_margin_cols = w->right_margin_cols |
| 2885 | = make_number (margin_cols/2); |
| 2886 | else |
| 2887 | w->right_margin_cols = make_number (margin_cols); |
| 2888 | } |
| 2889 | else |
| 2890 | w->left_margin_cols = make_number (margin_cols); |
| 2891 | return 1; |
| 2892 | } |
| 2893 | \f |
| 2894 | static Lisp_Object Fset_window_margins (Lisp_Object, Lisp_Object, Lisp_Object); |
| 2895 | static Lisp_Object Fset_window_fringes (Lisp_Object, Lisp_Object, Lisp_Object, |
| 2896 | Lisp_Object); |
| 2897 | static Lisp_Object Fset_window_scroll_bars (Lisp_Object, Lisp_Object, |
| 2898 | Lisp_Object, Lisp_Object); |
| 2899 | static Lisp_Object Fset_window_vscroll (Lisp_Object, Lisp_Object, Lisp_Object); |
| 2900 | |
| 2901 | /* The following three routines are needed for running a window's |
| 2902 | configuration change hook. */ |
| 2903 | static void |
| 2904 | run_funs (Lisp_Object funs) |
| 2905 | { |
| 2906 | for (; CONSP (funs); funs = XCDR (funs)) |
| 2907 | if (!EQ (XCAR (funs), Qt)) |
| 2908 | call0 (XCAR (funs)); |
| 2909 | } |
| 2910 | |
| 2911 | static Lisp_Object |
| 2912 | select_window_norecord (Lisp_Object window) |
| 2913 | { |
| 2914 | return WINDOW_LIVE_P (window) |
| 2915 | ? Fselect_window (window, Qt) : selected_window; |
| 2916 | } |
| 2917 | |
| 2918 | static Lisp_Object |
| 2919 | select_frame_norecord (Lisp_Object frame) |
| 2920 | { |
| 2921 | return FRAME_LIVE_P (XFRAME (frame)) |
| 2922 | ? Fselect_frame (frame, Qt) : selected_frame; |
| 2923 | } |
| 2924 | |
| 2925 | void |
| 2926 | run_window_configuration_change_hook (struct frame *f) |
| 2927 | { |
| 2928 | int count = SPECPDL_INDEX (); |
| 2929 | Lisp_Object frame, global_wcch |
| 2930 | = Fdefault_value (Qwindow_configuration_change_hook); |
| 2931 | XSETFRAME (frame, f); |
| 2932 | |
| 2933 | if (NILP (Vrun_hooks)) |
| 2934 | return; |
| 2935 | |
| 2936 | /* Use the right buffer. Matters when running the local hooks. */ |
| 2937 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) |
| 2938 | { |
| 2939 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
| 2940 | Fset_buffer (Fwindow_buffer (Qnil)); |
| 2941 | } |
| 2942 | |
| 2943 | if (SELECTED_FRAME () != f) |
| 2944 | { |
| 2945 | record_unwind_protect (select_frame_norecord, Fselected_frame ()); |
| 2946 | select_frame_norecord (frame); |
| 2947 | } |
| 2948 | |
| 2949 | /* Look for buffer-local values. */ |
| 2950 | { |
| 2951 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); |
| 2952 | for (; CONSP (windows); windows = XCDR (windows)) |
| 2953 | { |
| 2954 | Lisp_Object window = XCAR (windows); |
| 2955 | Lisp_Object buffer = Fwindow_buffer (window); |
| 2956 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, |
| 2957 | buffer))) |
| 2958 | { |
| 2959 | int inner_count = SPECPDL_INDEX (); |
| 2960 | record_unwind_protect (select_window_norecord, Fselected_window ()); |
| 2961 | select_window_norecord (window); |
| 2962 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, |
| 2963 | buffer)); |
| 2964 | unbind_to (inner_count, Qnil); |
| 2965 | } |
| 2966 | } |
| 2967 | } |
| 2968 | |
| 2969 | run_funs (global_wcch); |
| 2970 | unbind_to (count, Qnil); |
| 2971 | } |
| 2972 | |
| 2973 | DEFUN ("run-window-configuration-change-hook", Frun_window_configuration_change_hook, |
| 2974 | Srun_window_configuration_change_hook, 1, 1, 0, |
| 2975 | doc: /* Run `window-configuration-change-hook' for FRAME. */) |
| 2976 | (Lisp_Object frame) |
| 2977 | { |
| 2978 | CHECK_LIVE_FRAME (frame); |
| 2979 | run_window_configuration_change_hook (XFRAME (frame)); |
| 2980 | return Qnil; |
| 2981 | } |
| 2982 | |
| 2983 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
| 2984 | means it's allowed to run hooks. See make_frame for a case where |
| 2985 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
| 2986 | margins, fringes, and scroll-bar settings of the window are not |
| 2987 | reset from the buffer's local settings. */ |
| 2988 | |
| 2989 | void |
| 2990 | set_window_buffer (Lisp_Object window, Lisp_Object buffer, int run_hooks_p, int keep_margins_p) |
| 2991 | { |
| 2992 | struct window *w = XWINDOW (window); |
| 2993 | struct buffer *b = XBUFFER (buffer); |
| 2994 | int count = SPECPDL_INDEX (); |
| 2995 | int samebuf = EQ (buffer, w->buffer); |
| 2996 | |
| 2997 | w->buffer = buffer; |
| 2998 | |
| 2999 | if (EQ (window, selected_window)) |
| 3000 | BVAR (b, last_selected_window) = window; |
| 3001 | |
| 3002 | /* Let redisplay errors through. */ |
| 3003 | b->display_error_modiff = 0; |
| 3004 | |
| 3005 | /* Update time stamps of buffer display. */ |
| 3006 | if (INTEGERP (BVAR (b, display_count))) |
| 3007 | XSETINT (BVAR (b, display_count), XINT (BVAR (b, display_count)) + 1); |
| 3008 | BVAR (b, display_time) = Fcurrent_time (); |
| 3009 | |
| 3010 | XSETFASTINT (w->window_end_pos, 0); |
| 3011 | XSETFASTINT (w->window_end_vpos, 0); |
| 3012 | memset (&w->last_cursor, 0, sizeof w->last_cursor); |
| 3013 | w->window_end_valid = Qnil; |
| 3014 | if (!(keep_margins_p && samebuf)) |
| 3015 | { /* If we're not actually changing the buffer, don't reset hscroll and |
| 3016 | vscroll. This case happens for example when called from |
| 3017 | change_frame_size_1, where we use a dummy call to |
| 3018 | Fset_window_buffer on the frame's selected window (and no other) |
| 3019 | just in order to run window-configuration-change-hook. |
| 3020 | Resetting hscroll and vscroll here is problematic for things like |
| 3021 | image-mode and doc-view-mode since it resets the image's position |
| 3022 | whenever we resize the frame. */ |
| 3023 | w->hscroll = w->min_hscroll = make_number (0); |
| 3024 | w->vscroll = 0; |
| 3025 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
| 3026 | set_marker_restricted (w->start, |
| 3027 | make_number (b->last_window_start), |
| 3028 | buffer); |
| 3029 | w->start_at_line_beg = Qnil; |
| 3030 | w->force_start = Qnil; |
| 3031 | XSETFASTINT (w->last_modified, 0); |
| 3032 | XSETFASTINT (w->last_overlay_modified, 0); |
| 3033 | } |
| 3034 | /* Maybe we could move this into the `if' but it's not obviously safe and |
| 3035 | I doubt it's worth the trouble. */ |
| 3036 | windows_or_buffers_changed++; |
| 3037 | |
| 3038 | /* We must select BUFFER for running the window-scroll-functions. */ |
| 3039 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
| 3040 | because that might itself be a local variable. */ |
| 3041 | if (window_initialized) |
| 3042 | { |
| 3043 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
| 3044 | Fset_buffer (buffer); |
| 3045 | } |
| 3046 | |
| 3047 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
| 3048 | |
| 3049 | if (!keep_margins_p) |
| 3050 | { |
| 3051 | /* Set left and right marginal area width etc. from buffer. */ |
| 3052 | |
| 3053 | /* This may call adjust_window_margins three times, so |
| 3054 | temporarily disable window margins. */ |
| 3055 | Lisp_Object save_left = w->left_margin_cols; |
| 3056 | Lisp_Object save_right = w->right_margin_cols; |
| 3057 | |
| 3058 | w->left_margin_cols = w->right_margin_cols = Qnil; |
| 3059 | |
| 3060 | Fset_window_fringes (window, |
| 3061 | BVAR (b, left_fringe_width), BVAR (b, right_fringe_width), |
| 3062 | BVAR (b, fringes_outside_margins)); |
| 3063 | |
| 3064 | Fset_window_scroll_bars (window, |
| 3065 | BVAR (b, scroll_bar_width), |
| 3066 | BVAR (b, vertical_scroll_bar_type), Qnil); |
| 3067 | |
| 3068 | w->left_margin_cols = save_left; |
| 3069 | w->right_margin_cols = save_right; |
| 3070 | |
| 3071 | Fset_window_margins (window, |
| 3072 | BVAR (b, left_margin_cols), BVAR (b, right_margin_cols)); |
| 3073 | } |
| 3074 | |
| 3075 | if (run_hooks_p) |
| 3076 | { |
| 3077 | if (! NILP (Vwindow_scroll_functions)) |
| 3078 | run_hook_with_args_2 (Qwindow_scroll_functions, window, |
| 3079 | Fmarker_position (w->start)); |
| 3080 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
| 3081 | } |
| 3082 | |
| 3083 | unbind_to (count, Qnil); |
| 3084 | } |
| 3085 | |
| 3086 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
| 3087 | doc: /* Make WINDOW display BUFFER-OR-NAME as its contents. |
| 3088 | WINDOW has to be a live window and defaults to the selected one. |
| 3089 | BUFFER-OR-NAME must be a buffer or the name of an existing buffer. |
| 3090 | |
| 3091 | Optional third argument KEEP-MARGINS non-nil means that WINDOW's current |
| 3092 | display margins, fringe widths, and scroll bar settings are preserved; |
| 3093 | the default is to reset these from the local settings for BUFFER-OR-NAME |
| 3094 | or the frame defaults. Return nil. |
| 3095 | |
| 3096 | This function throws an error when WINDOW is strongly dedicated to its |
| 3097 | buffer (that is `window-dedicated-p' returns t for WINDOW) and does not |
| 3098 | already display BUFFER-OR-NAME. |
| 3099 | |
| 3100 | This function runs `window-scroll-functions' before running |
| 3101 | `window-configuration-change-hook'. */) |
| 3102 | (register Lisp_Object window, Lisp_Object buffer_or_name, Lisp_Object keep_margins) |
| 3103 | { |
| 3104 | register Lisp_Object tem, buffer; |
| 3105 | register struct window *w = decode_window (window); |
| 3106 | |
| 3107 | XSETWINDOW (window, w); |
| 3108 | buffer = Fget_buffer (buffer_or_name); |
| 3109 | CHECK_BUFFER (buffer); |
| 3110 | if (NILP (BVAR (XBUFFER (buffer), name))) |
| 3111 | error ("Attempt to display deleted buffer"); |
| 3112 | |
| 3113 | tem = w->buffer; |
| 3114 | if (NILP (tem)) |
| 3115 | error ("Window is deleted"); |
| 3116 | else if (!EQ (tem, Qt)) |
| 3117 | /* w->buffer is t when the window is first being set up. */ |
| 3118 | { |
| 3119 | if (!EQ (tem, buffer)) |
| 3120 | { |
| 3121 | if (EQ (w->dedicated, Qt)) |
| 3122 | /* WINDOW is strongly dedicated to its buffer, signal an |
| 3123 | error. */ |
| 3124 | error ("Window is dedicated to `%s'", SDATA (BVAR (XBUFFER (tem), name))); |
| 3125 | else |
| 3126 | /* WINDOW is weakly dedicated to its buffer, reset |
| 3127 | dedicatedness. */ |
| 3128 | w->dedicated = Qnil; |
| 3129 | |
| 3130 | call1 (Qrecord_window_buffer, window); |
| 3131 | } |
| 3132 | |
| 3133 | unshow_buffer (w); |
| 3134 | } |
| 3135 | |
| 3136 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
| 3137 | |
| 3138 | return Qnil; |
| 3139 | } |
| 3140 | \f |
| 3141 | static Lisp_Object |
| 3142 | display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, Lisp_Object override_frame) |
| 3143 | { |
| 3144 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
| 3145 | } |
| 3146 | |
| 3147 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
| 3148 | 0, 1, 0, |
| 3149 | doc: /* Force all windows to be updated on next redisplay. |
| 3150 | If optional arg OBJECT is a window, force redisplay of that window only. |
| 3151 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
| 3152 | displaying that buffer. */) |
| 3153 | (Lisp_Object object) |
| 3154 | { |
| 3155 | if (NILP (object)) |
| 3156 | { |
| 3157 | windows_or_buffers_changed++; |
| 3158 | update_mode_lines++; |
| 3159 | return Qt; |
| 3160 | } |
| 3161 | |
| 3162 | if (WINDOWP (object)) |
| 3163 | { |
| 3164 | struct window *w = XWINDOW (object); |
| 3165 | mark_window_display_accurate (object, 0); |
| 3166 | w->update_mode_line = Qt; |
| 3167 | if (BUFFERP (w->buffer)) |
| 3168 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
| 3169 | ++update_mode_lines; |
| 3170 | return Qt; |
| 3171 | } |
| 3172 | |
| 3173 | if (STRINGP (object)) |
| 3174 | object = Fget_buffer (object); |
| 3175 | if (BUFFERP (object) && !NILP (BVAR (XBUFFER (object), name))) |
| 3176 | { |
| 3177 | /* Walk all windows looking for buffer, and force update |
| 3178 | of each of those windows. */ |
| 3179 | |
| 3180 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); |
| 3181 | return NILP (object) ? Qnil : Qt; |
| 3182 | } |
| 3183 | |
| 3184 | /* If nothing suitable was found, just return. |
| 3185 | We could signal an error, but this feature will typically be used |
| 3186 | asynchronously in timers or process sentinels, so we don't. */ |
| 3187 | return Qnil; |
| 3188 | } |
| 3189 | |
| 3190 | |
| 3191 | void |
| 3192 | temp_output_buffer_show (register Lisp_Object buf) |
| 3193 | { |
| 3194 | register struct buffer *old = current_buffer; |
| 3195 | register Lisp_Object window; |
| 3196 | register struct window *w; |
| 3197 | |
| 3198 | BVAR (XBUFFER (buf), directory) = BVAR (current_buffer, directory); |
| 3199 | |
| 3200 | Fset_buffer (buf); |
| 3201 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
| 3202 | BEGV = BEG; |
| 3203 | ZV = Z; |
| 3204 | SET_PT (BEG); |
| 3205 | set_buffer_internal (old); |
| 3206 | |
| 3207 | if (!NILP (Vtemp_buffer_show_function)) |
| 3208 | call1 (Vtemp_buffer_show_function, buf); |
| 3209 | else |
| 3210 | { |
| 3211 | window = display_buffer (buf, Vtemp_buffer_show_specifiers, Qnil); |
| 3212 | /* Reset Vtemp_buffer_show_specifiers immediately so it won't |
| 3213 | affect subsequent calls. */ |
| 3214 | Vtemp_buffer_show_specifiers = Qnil; |
| 3215 | |
| 3216 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
| 3217 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
| 3218 | Vminibuf_scroll_window = window; |
| 3219 | w = XWINDOW (window); |
| 3220 | XSETFASTINT (w->hscroll, 0); |
| 3221 | XSETFASTINT (w->min_hscroll, 0); |
| 3222 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
| 3223 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); |
| 3224 | |
| 3225 | /* Run temp-buffer-show-hook, with the chosen window selected |
| 3226 | and its buffer current. */ |
| 3227 | { |
| 3228 | int count = SPECPDL_INDEX (); |
| 3229 | Lisp_Object prev_window, prev_buffer; |
| 3230 | prev_window = selected_window; |
| 3231 | XSETBUFFER (prev_buffer, old); |
| 3232 | |
| 3233 | /* Select the window that was chosen, for running the hook. |
| 3234 | Note: Both Fselect_window and select_window_norecord may |
| 3235 | set-buffer to the buffer displayed in the window, |
| 3236 | so we need to save the current buffer. --stef */ |
| 3237 | record_unwind_protect (Fset_buffer, prev_buffer); |
| 3238 | record_unwind_protect (select_window_norecord, prev_window); |
| 3239 | Fselect_window (window, Qt); |
| 3240 | Fset_buffer (w->buffer); |
| 3241 | Frun_hooks (1, &Qtemp_buffer_show_hook); |
| 3242 | unbind_to (count, Qnil); |
| 3243 | } |
| 3244 | } |
| 3245 | } |
| 3246 | |
| 3247 | DEFUN ("internal-temp-output-buffer-show", |
| 3248 | Ftemp_output_buffer_show, Stemp_output_buffer_show, |
| 3249 | 1, 1, 0, |
| 3250 | doc: /* Internal function for `with-output-to-temp-buffer''. */) |
| 3251 | (Lisp_Object buf) |
| 3252 | { |
| 3253 | temp_output_buffer_show (buf); |
| 3254 | return Qnil; |
| 3255 | } |
| 3256 | \f |
| 3257 | /* Make new window, have it replace WINDOW in window-tree, and make |
| 3258 | WINDOW its only vertical child (HORFLAG 1 means make WINDOW its only |
| 3259 | horizontal child). */ |
| 3260 | static void |
| 3261 | make_parent_window (Lisp_Object window, int horflag) |
| 3262 | { |
| 3263 | Lisp_Object parent; |
| 3264 | register struct window *o, *p; |
| 3265 | int i; |
| 3266 | |
| 3267 | o = XWINDOW (window); |
| 3268 | p = allocate_window (); |
| 3269 | for (i = 0; i < VECSIZE (struct window); ++i) |
| 3270 | ((struct Lisp_Vector *) p)->contents[i] |
| 3271 | = ((struct Lisp_Vector *) o)->contents[i]; |
| 3272 | XSETWINDOW (parent, p); |
| 3273 | |
| 3274 | ++sequence_number; |
| 3275 | XSETFASTINT (p->sequence_number, sequence_number); |
| 3276 | |
| 3277 | replace_window (window, parent, 1); |
| 3278 | |
| 3279 | o->next = Qnil; |
| 3280 | o->prev = Qnil; |
| 3281 | o->parent = parent; |
| 3282 | |
| 3283 | p->hchild = horflag ? window : Qnil; |
| 3284 | p->vchild = horflag ? Qnil : window; |
| 3285 | p->start = Qnil; |
| 3286 | p->pointm = Qnil; |
| 3287 | p->buffer = Qnil; |
| 3288 | p->splits = Qnil; |
| 3289 | p->nest = Qnil; |
| 3290 | p->window_parameters = Qnil; |
| 3291 | } |
| 3292 | |
| 3293 | /* Make new window from scratch. */ |
| 3294 | Lisp_Object |
| 3295 | make_window (void) |
| 3296 | { |
| 3297 | Lisp_Object window; |
| 3298 | register struct window *w; |
| 3299 | |
| 3300 | w = allocate_window (); |
| 3301 | /* Initialize all Lisp data. */ |
| 3302 | w->frame = w->mini_p = Qnil; |
| 3303 | w->next = w->prev = w->hchild = w->vchild = w->parent = Qnil; |
| 3304 | XSETFASTINT (w->left_col, 0); |
| 3305 | XSETFASTINT (w->top_line, 0); |
| 3306 | XSETFASTINT (w->total_lines, 0); |
| 3307 | XSETFASTINT (w->total_cols, 0); |
| 3308 | w->normal_lines = make_float (1.0); |
| 3309 | w->normal_cols = make_float (1.0); |
| 3310 | XSETFASTINT (w->new_total, 0); |
| 3311 | XSETFASTINT (w->new_normal, 0); |
| 3312 | w->buffer = Qnil; |
| 3313 | w->start = Fmake_marker (); |
| 3314 | w->pointm = Fmake_marker (); |
| 3315 | w->force_start = w->optional_new_start = Qnil; |
| 3316 | XSETFASTINT (w->hscroll, 0); |
| 3317 | XSETFASTINT (w->min_hscroll, 0); |
| 3318 | XSETFASTINT (w->use_time, 0); |
| 3319 | ++sequence_number; |
| 3320 | XSETFASTINT (w->sequence_number, sequence_number); |
| 3321 | w->temslot = w->last_modified = w->last_overlay_modified = Qnil; |
| 3322 | XSETFASTINT (w->last_point, 0); |
| 3323 | w->last_had_star = w->vertical_scroll_bar = Qnil; |
| 3324 | w->left_margin_cols = w->right_margin_cols = Qnil; |
| 3325 | w->left_fringe_width = w->right_fringe_width = Qnil; |
| 3326 | w->fringes_outside_margins = Qnil; |
| 3327 | w->scroll_bar_width = Qnil; |
| 3328 | w->vertical_scroll_bar_type = Qt; |
| 3329 | w->last_mark_x = w->last_mark_y = Qnil; |
| 3330 | XSETFASTINT (w->window_end_pos, 0); |
| 3331 | XSETFASTINT (w->window_end_vpos, 0); |
| 3332 | w->window_end_valid = w->update_mode_line = Qnil; |
| 3333 | w->start_at_line_beg = w->display_table = w->dedicated = Qnil; |
| 3334 | w->base_line_number = w->base_line_pos = w->region_showing = Qnil; |
| 3335 | w->column_number_displayed = w->redisplay_end_trigger = Qnil; |
| 3336 | w->splits = w->nest = w->window_parameters = Qnil; |
| 3337 | w->prev_buffers = w->next_buffers = Qnil; |
| 3338 | /* Initialize non-Lisp data. */ |
| 3339 | w->desired_matrix = w->current_matrix = 0; |
| 3340 | w->nrows_scale_factor = w->ncols_scale_factor = 1; |
| 3341 | memset (&w->cursor, 0, sizeof (w->cursor)); |
| 3342 | memset (&w->last_cursor, 0, sizeof (w->last_cursor)); |
| 3343 | memset (&w->phys_cursor, 0, sizeof (w->phys_cursor)); |
| 3344 | w->phys_cursor_type = -1; |
| 3345 | w->phys_cursor_width = -1; |
| 3346 | w->last_cursor_off_p = w->cursor_off_p = 0; |
| 3347 | w->must_be_updated_p = 0; |
| 3348 | w->pseudo_window_p = 0; |
| 3349 | w->frozen_window_start_p = 0; |
| 3350 | w->vscroll = 0; |
| 3351 | /* Reset window_list. */ |
| 3352 | Vwindow_list = Qnil; |
| 3353 | /* Return window. */ |
| 3354 | XSETWINDOW (window, w); |
| 3355 | return window; |
| 3356 | } |
| 3357 | \f |
| 3358 | DEFUN ("set-window-new-total", Fset_window_new_total, Sset_window_new_total, 2, 3, 0, |
| 3359 | doc: /* Set new total size of WINDOW to SIZE. |
| 3360 | Return SIZE. |
| 3361 | |
| 3362 | Optional argument ADD non-nil means add SIZE to the new total size of |
| 3363 | WINDOW and return the sum. |
| 3364 | |
| 3365 | Note: This function does not operate on any subwindows of WINDOW. */) |
| 3366 | (Lisp_Object window, Lisp_Object size, Lisp_Object add) |
| 3367 | { |
| 3368 | struct window *w = decode_any_window (window); |
| 3369 | |
| 3370 | CHECK_NUMBER (size); |
| 3371 | if (NILP (add)) |
| 3372 | XSETINT (w->new_total, XINT (size)); |
| 3373 | else |
| 3374 | XSETINT (w->new_total, XINT (w->new_total) + XINT (size)); |
| 3375 | |
| 3376 | return w->new_total; |
| 3377 | } |
| 3378 | |
| 3379 | DEFUN ("set-window-new-normal", Fset_window_new_normal, Sset_window_new_normal, 1, 2, 0, |
| 3380 | doc: /* Set new normal size of WINDOW to SIZE. |
| 3381 | Return SIZE. |
| 3382 | |
| 3383 | Note: This function does not operate on any subwindows of WINDOW. */) |
| 3384 | (Lisp_Object window, Lisp_Object size) |
| 3385 | { |
| 3386 | struct window *w = decode_any_window (window); |
| 3387 | |
| 3388 | w->new_normal = size; |
| 3389 | return w->new_normal; |
| 3390 | } |
| 3391 | |
| 3392 | /* Return 1 if setting w->total_lines (w->total_cols if HORFLAG is |
| 3393 | non-zero) to w->new_total would result in correct heights (widths) |
| 3394 | for window W and recursively all subwindows of W. |
| 3395 | |
| 3396 | Note: This function does not check any of `window-fixed-size-p', |
| 3397 | `window-min-height' or `window-min-width'. It does check that window |
| 3398 | sizes do not drop below one line (two columns). */ |
| 3399 | static int |
| 3400 | window_resize_check (struct window *w, int horflag) |
| 3401 | { |
| 3402 | struct window *c; |
| 3403 | |
| 3404 | if (!NILP (w->vchild)) |
| 3405 | /* W is a vertical combination. */ |
| 3406 | { |
| 3407 | c = XWINDOW (w->vchild); |
| 3408 | if (horflag) |
| 3409 | /* All subwindows of W must have the same width as W. */ |
| 3410 | { |
| 3411 | while (c) |
| 3412 | { |
| 3413 | if ((XINT (c->new_total) != XINT (w->new_total)) |
| 3414 | || !window_resize_check (c, horflag)) |
| 3415 | return 0; |
| 3416 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
| 3417 | } |
| 3418 | return 1; |
| 3419 | } |
| 3420 | else |
| 3421 | /* The sum of the heights of the subwindows of W must equal W's |
| 3422 | height. */ |
| 3423 | { |
| 3424 | int sum_of_sizes = 0; |
| 3425 | while (c) |
| 3426 | { |
| 3427 | if (!window_resize_check (c, horflag)) |
| 3428 | return 0; |
| 3429 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); |
| 3430 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
| 3431 | } |
| 3432 | return (sum_of_sizes == XINT (w->new_total)); |
| 3433 | } |
| 3434 | } |
| 3435 | else if (!NILP (w->hchild)) |
| 3436 | /* W is a horizontal combination. */ |
| 3437 | { |
| 3438 | c = XWINDOW (w->hchild); |
| 3439 | if (horflag) |
| 3440 | /* The sum of the widths of the subwindows of W must equal W's |
| 3441 | width. */ |
| 3442 | { |
| 3443 | int sum_of_sizes = 0; |
| 3444 | while (c) |
| 3445 | { |
| 3446 | if (!window_resize_check (c, horflag)) |
| 3447 | return 0; |
| 3448 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); |
| 3449 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
| 3450 | } |
| 3451 | return (sum_of_sizes == XINT (w->new_total)); |
| 3452 | } |
| 3453 | else |
| 3454 | /* All subwindows of W must have the same height as W. */ |
| 3455 | { |
| 3456 | while (c) |
| 3457 | { |
| 3458 | if ((XINT (c->new_total) != XINT (w->new_total)) |
| 3459 | || !window_resize_check (c, horflag)) |
| 3460 | return 0; |
| 3461 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
| 3462 | } |
| 3463 | return 1; |
| 3464 | } |
| 3465 | } |
| 3466 | else |
| 3467 | /* A leaf window. Make sure it's not too small. The following |
| 3468 | hardcodes the values of `window-safe-min-width' (2) and |
| 3469 | `window-safe-min-height' (1) which are defined in window.el. */ |
| 3470 | return XINT (w->new_total) >= (horflag ? 2 : 1); |
| 3471 | } |
| 3472 | |
| 3473 | /* Set w->total_lines (w->total_cols if HORIZONTAL is non-zero) to |
| 3474 | w->new_total for window W and recursively all subwindows of W. Also |
| 3475 | calculate and assign the new vertical (horizontal) start positions of |
| 3476 | each of these windows. |
| 3477 | |
| 3478 | This function does not perform any error checks. Make sure you have |
| 3479 | run window_resize_check on W before applying this function. */ |
| 3480 | static void |
| 3481 | window_resize_apply (struct window *w, int horflag) |
| 3482 | { |
| 3483 | struct window *c; |
| 3484 | int pos; |
| 3485 | |
| 3486 | /* Note: Assigning new_normal requires that the new total size of the |
| 3487 | parent window has been set *before*. */ |
| 3488 | if (horflag) |
| 3489 | { |
| 3490 | w->total_cols = w->new_total; |
| 3491 | if (NUMBERP (w->new_normal)) |
| 3492 | w->normal_cols = w->new_normal; |
| 3493 | |
| 3494 | pos = XINT (w->left_col); |
| 3495 | } |
| 3496 | else |
| 3497 | { |
| 3498 | w->total_lines = w->new_total; |
| 3499 | if (NUMBERP (w->new_normal)) |
| 3500 | w->normal_lines = w->new_normal; |
| 3501 | |
| 3502 | pos = XINT (w->top_line); |
| 3503 | } |
| 3504 | |
| 3505 | if (!NILP (w->vchild)) |
| 3506 | /* W is a vertical combination. */ |
| 3507 | { |
| 3508 | c = XWINDOW (w->vchild); |
| 3509 | while (c) |
| 3510 | { |
| 3511 | if (horflag) |
| 3512 | XSETFASTINT (c->left_col, pos); |
| 3513 | else |
| 3514 | XSETFASTINT (c->top_line, pos); |
| 3515 | window_resize_apply (c, horflag); |
| 3516 | if (!horflag) |
| 3517 | pos = pos + XINT (c->total_lines); |
| 3518 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
| 3519 | } |
| 3520 | } |
| 3521 | else if (!NILP (w->hchild)) |
| 3522 | /* W is a horizontal combination. */ |
| 3523 | { |
| 3524 | c = XWINDOW (w->hchild); |
| 3525 | while (c) |
| 3526 | { |
| 3527 | if (horflag) |
| 3528 | XSETFASTINT (c->left_col, pos); |
| 3529 | else |
| 3530 | XSETFASTINT (c->top_line, pos); |
| 3531 | window_resize_apply (c, horflag); |
| 3532 | if (horflag) |
| 3533 | pos = pos + XINT (c->total_cols); |
| 3534 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
| 3535 | } |
| 3536 | } |
| 3537 | |
| 3538 | /* Clear out some redisplay caches. */ |
| 3539 | XSETFASTINT (w->last_modified, 0); |
| 3540 | XSETFASTINT (w->last_overlay_modified, 0); |
| 3541 | } |
| 3542 | |
| 3543 | |
| 3544 | DEFUN ("window-resize-apply", Fwindow_resize_apply, Swindow_resize_apply, 1, 2, 0, |
| 3545 | doc: /* Apply requested size values for window-tree of FRAME. |
| 3546 | Optional argument HORIZONTAL omitted or nil means apply requested height |
| 3547 | values. HORIZONTAL non-nil means apply requested width values. |
| 3548 | |
| 3549 | This function checks whether the requested values sum up to a valid |
| 3550 | window layout, recursively assigns the new sizes of all subwindows and |
| 3551 | calculates and assigns the new start positions of these windows. |
| 3552 | |
| 3553 | Note: This function does not check any of `window-fixed-size-p', |
| 3554 | `window-min-height' or `window-min-width'. All these checks have to |
| 3555 | be applied on the Elisp level. */) |
| 3556 | (Lisp_Object frame, Lisp_Object horizontal) |
| 3557 | { |
| 3558 | struct frame *f; |
| 3559 | struct window *r; |
| 3560 | int horflag = !NILP (horizontal); |
| 3561 | |
| 3562 | if (NILP (frame)) |
| 3563 | frame = selected_frame; |
| 3564 | CHECK_LIVE_FRAME (frame); |
| 3565 | |
| 3566 | f = XFRAME (frame); |
| 3567 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); |
| 3568 | |
| 3569 | if (!window_resize_check (r, horflag) |
| 3570 | || ! EQ (r->new_total, (horflag ? r->total_cols : r->total_lines))) |
| 3571 | return Qnil; |
| 3572 | |
| 3573 | BLOCK_INPUT; |
| 3574 | window_resize_apply (r, horflag); |
| 3575 | |
| 3576 | windows_or_buffers_changed++; |
| 3577 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
| 3578 | |
| 3579 | adjust_glyphs (f); |
| 3580 | UNBLOCK_INPUT; |
| 3581 | |
| 3582 | run_window_configuration_change_hook (f); |
| 3583 | |
| 3584 | return Qt; |
| 3585 | } |
| 3586 | |
| 3587 | |
| 3588 | /* Resize frame F's windows when number of lines of F is set to SIZE. |
| 3589 | HORFLAG 1 means resize windows when number of columns of F is set to |
| 3590 | SIZE. |
| 3591 | |
| 3592 | This function can delete all windows but the selected one in order to |
| 3593 | satisfy the request. The result will be meaningful if and only if |
| 3594 | F's windows have meaningful sizes when you call this. */ |
| 3595 | void |
| 3596 | resize_frame_windows (struct frame *f, int size, int horflag) |
| 3597 | { |
| 3598 | Lisp_Object root = f->root_window; |
| 3599 | struct window *r = XWINDOW (root); |
| 3600 | Lisp_Object mini = f->minibuffer_window; |
| 3601 | struct window *m; |
| 3602 | /* new_size is the new size of the frame's root window. */ |
| 3603 | int new_size = (horflag |
| 3604 | ? size |
| 3605 | : (size |
| 3606 | - FRAME_TOP_MARGIN (f) |
| 3607 | - ((FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) |
| 3608 | ? 1 : 0))); |
| 3609 | |
| 3610 | XSETFASTINT (r->top_line, FRAME_TOP_MARGIN (f)); |
| 3611 | if (NILP (r->vchild) && NILP (r->hchild)) |
| 3612 | /* For a leaf root window just set the size. */ |
| 3613 | if (horflag) |
| 3614 | XSETFASTINT (r->total_cols, new_size); |
| 3615 | else |
| 3616 | XSETFASTINT (r->total_lines, new_size); |
| 3617 | else |
| 3618 | { |
| 3619 | /* old_size is the old size of the frame's root window. */ |
| 3620 | int old_size = XFASTINT (horflag ? r->total_cols : r->total_lines); |
| 3621 | Lisp_Object delta; |
| 3622 | |
| 3623 | XSETINT (delta, new_size - old_size); |
| 3624 | /* Try a "normal" resize first. */ |
| 3625 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qnil); |
| 3626 | if (window_resize_check (r, horflag) && new_size == XINT (r->new_total)) |
| 3627 | window_resize_apply (r, horflag); |
| 3628 | else |
| 3629 | { |
| 3630 | /* Try with "reasonable" minimum sizes next. */ |
| 3631 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qt); |
| 3632 | if (window_resize_check (r, horflag) |
| 3633 | && new_size == XINT (r->new_total)) |
| 3634 | window_resize_apply (r, horflag); |
| 3635 | else |
| 3636 | { |
| 3637 | /* Finally, try with "safe" minimum sizes. */ |
| 3638 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qsafe); |
| 3639 | if (window_resize_check (r, horflag) |
| 3640 | && new_size == XINT (r->new_total)) |
| 3641 | window_resize_apply (r, horflag); |
| 3642 | else |
| 3643 | { |
| 3644 | /* We lost. Delete all windows but the frame's |
| 3645 | selected one. */ |
| 3646 | root = f->selected_window; |
| 3647 | Fdelete_other_windows_internal (root, Qnil); |
| 3648 | if (horflag) |
| 3649 | XSETFASTINT (XWINDOW (root)->total_cols, new_size); |
| 3650 | else |
| 3651 | XSETFASTINT (XWINDOW (root)->total_lines, new_size); |
| 3652 | } |
| 3653 | } |
| 3654 | } |
| 3655 | } |
| 3656 | |
| 3657 | if (FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) |
| 3658 | { |
| 3659 | m = XWINDOW (mini); |
| 3660 | if (horflag) |
| 3661 | XSETFASTINT (m->total_cols, size); |
| 3662 | else |
| 3663 | { |
| 3664 | /* Are we sure we always want 1 line here? */ |
| 3665 | XSETFASTINT (m->total_lines, 1); |
| 3666 | XSETFASTINT (m->top_line, XINT (r->top_line) + XINT (r->total_lines)); |
| 3667 | } |
| 3668 | } |
| 3669 | } |
| 3670 | |
| 3671 | |
| 3672 | DEFUN ("split-window-internal", Fsplit_window_internal, Ssplit_window_internal, 4, 4, 0, |
| 3673 | doc: /* Split window OLD. |
| 3674 | Second argument TOTAL-SIZE specifies the number of lines or columns of the |
| 3675 | new window. In any case TOTAL-SIZE must be a positive integer. |
| 3676 | |
| 3677 | Third argument SIDE nil (or `below') specifies that the new window shall |
| 3678 | be located below WINDOW. SIDE `above' means the new window shall be |
| 3679 | located above WINDOW. In both cases TOTAL-SIZE specifies the number of |
| 3680 | lines of the new window including space reserved for the mode and/or |
| 3681 | header line. |
| 3682 | |
| 3683 | SIDE t (or `right') specifies that the new window shall be located on |
| 3684 | the right side of WINDOW. SIDE `left' means the new window shall be |
| 3685 | located on the left of WINDOW. In both cases TOTAL-SIZE specifies the |
| 3686 | number of columns of the new window including space reserved for fringes |
| 3687 | and the scrollbar or a divider column. |
| 3688 | |
| 3689 | Fourth argument NORMAL-SIZE specifies the normal size of the new window |
| 3690 | according to the SIDE argument. |
| 3691 | |
| 3692 | The new total and normal sizes of all involved windows must have been |
| 3693 | set correctly. See the code of `split-window' for how this is done. */) |
| 3694 | (Lisp_Object old, Lisp_Object total_size, Lisp_Object side, Lisp_Object normal_size) |
| 3695 | { |
| 3696 | /* OLD (*o) is the window we have to split. (*p) is either OLD's |
| 3697 | parent window or an internal window we have to install as OLD's new |
| 3698 | parent. REFERENCE (*r) must denote a live window, or is set to OLD |
| 3699 | provided OLD is a leaf window, or to the frame's selected window. |
| 3700 | NEW (*n) is the new window created with some parameters taken from |
| 3701 | REFERENCE (*r). */ |
| 3702 | register Lisp_Object new, frame, reference; |
| 3703 | register struct window *o, *p, *n, *r; |
| 3704 | struct frame *f; |
| 3705 | int horflag |
| 3706 | /* HORFLAG is 1 when we split side-by-side, 0 otherwise. */ |
| 3707 | = EQ (side, Qt) || EQ (side, Qleft) || EQ (side, Qright); |
| 3708 | int do_nest = 0; |
| 3709 | |
| 3710 | CHECK_WINDOW (old); |
| 3711 | o = XWINDOW (old); |
| 3712 | frame = WINDOW_FRAME (o); |
| 3713 | f = XFRAME (frame); |
| 3714 | |
| 3715 | CHECK_NUMBER (total_size); |
| 3716 | |
| 3717 | /* Set do_nest to 1 if we have to make a new parent window. We do |
| 3718 | that if either `window-nest' is non-nil, or OLD has no parent, or |
| 3719 | OLD is ortho-combined. */ |
| 3720 | do_nest = |
| 3721 | !NILP (Vwindow_nest) |
| 3722 | || NILP (o->parent) |
| 3723 | || NILP (horflag |
| 3724 | ? (XWINDOW (o->parent)->hchild) |
| 3725 | : (XWINDOW (o->parent)->vchild)); |
| 3726 | |
| 3727 | /* We need a live reference window to initialize some parameters. */ |
| 3728 | if (WINDOW_LIVE_P (old)) |
| 3729 | /* OLD is live, use it as reference window. */ |
| 3730 | reference = old; |
| 3731 | else |
| 3732 | /* Use the frame's selected window as reference window. */ |
| 3733 | reference = FRAME_SELECTED_WINDOW (f); |
| 3734 | r = XWINDOW (reference); |
| 3735 | |
| 3736 | /* The following bugs are caught by `split-window'. */ |
| 3737 | if (MINI_WINDOW_P (o)) |
| 3738 | error ("Attempt to split minibuffer window"); |
| 3739 | else if (XINT (total_size) < (horflag ? 2 : 1)) |
| 3740 | error ("Size of new window too small (after split)"); |
| 3741 | else if (!do_nest && !NILP (Vwindow_splits)) |
| 3742 | /* `window-splits' non-nil means try to resize OLD's siblings |
| 3743 | proportionally. */ |
| 3744 | { |
| 3745 | p = XWINDOW (o->parent); |
| 3746 | /* Temporarily pretend we split the parent window. */ |
| 3747 | XSETINT (p->new_total, |
| 3748 | XINT (horflag ? p->total_cols : p->total_lines) |
| 3749 | - XINT (total_size)); |
| 3750 | if (!window_resize_check (p, horflag)) |
| 3751 | error ("Window sizes don't fit"); |
| 3752 | else |
| 3753 | /* Undo the temporary pretension. */ |
| 3754 | p->new_total = horflag ? p->total_cols : p->total_lines; |
| 3755 | } |
| 3756 | else |
| 3757 | { |
| 3758 | if (!window_resize_check (o, horflag)) |
| 3759 | error ("Resizing old window failed"); |
| 3760 | else if (XINT (total_size) + XINT (o->new_total) |
| 3761 | != XINT (horflag ? o->total_cols : o->total_lines)) |
| 3762 | error ("Sum of sizes of old and new window don't fit"); |
| 3763 | } |
| 3764 | |
| 3765 | /* This is our point of no return. */ |
| 3766 | if (do_nest) |
| 3767 | { |
| 3768 | /* Save the old value of o->normal_cols/lines. It gets corrupted |
| 3769 | by make_parent_window and we need it below for assigning it to |
| 3770 | p->new_normal. */ |
| 3771 | Lisp_Object new_normal = horflag ? o->normal_cols : o->normal_lines; |
| 3772 | |
| 3773 | make_parent_window (old, horflag); |
| 3774 | p = XWINDOW (o->parent); |
| 3775 | /* Store value of `window-nest' in new parent's nest slot. */ |
| 3776 | p->nest = Vwindow_nest; |
| 3777 | /* Have PARENT inherit splits slot value from OLD. */ |
| 3778 | p->splits = o->splits; |
| 3779 | /* Store value of `window-splits' in OLD's splits slot. */ |
| 3780 | o->splits = Vwindow_splits; |
| 3781 | /* These get applied below. */ |
| 3782 | p->new_total = horflag ? o->total_cols : o->total_lines; |
| 3783 | p->new_normal = new_normal; |
| 3784 | } |
| 3785 | else |
| 3786 | p = XWINDOW (o->parent); |
| 3787 | |
| 3788 | windows_or_buffers_changed++; |
| 3789 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
| 3790 | new = make_window (); |
| 3791 | n = XWINDOW (new); |
| 3792 | n->frame = frame; |
| 3793 | n->parent = o->parent; |
| 3794 | n->vchild = n->hchild = Qnil; |
| 3795 | |
| 3796 | if (EQ (side, Qabove) || EQ (side, Qleft)) |
| 3797 | { |
| 3798 | n->prev = o->prev; |
| 3799 | if (NILP (n->prev)) |
| 3800 | if (horflag) |
| 3801 | p->hchild = new; |
| 3802 | else |
| 3803 | p->vchild = new; |
| 3804 | else |
| 3805 | XWINDOW (n->prev)->next = new; |
| 3806 | n->next = old; |
| 3807 | o->prev = new; |
| 3808 | } |
| 3809 | else |
| 3810 | { |
| 3811 | n->next = o->next; |
| 3812 | if (!NILP (n->next)) |
| 3813 | XWINDOW (n->next)->prev = new; |
| 3814 | n->prev = old; |
| 3815 | o->next = new; |
| 3816 | } |
| 3817 | |
| 3818 | n->buffer = Qt; |
| 3819 | n->window_end_valid = Qnil; |
| 3820 | memset (&n->last_cursor, 0, sizeof n->last_cursor); |
| 3821 | |
| 3822 | /* Get special geometry settings from reference window. */ |
| 3823 | n->left_margin_cols = r->left_margin_cols; |
| 3824 | n->right_margin_cols = r->right_margin_cols; |
| 3825 | n->left_fringe_width = r->left_fringe_width; |
| 3826 | n->right_fringe_width = r->right_fringe_width; |
| 3827 | n->fringes_outside_margins = r->fringes_outside_margins; |
| 3828 | n->scroll_bar_width = r->scroll_bar_width; |
| 3829 | n->vertical_scroll_bar_type = r->vertical_scroll_bar_type; |
| 3830 | |
| 3831 | /* Store `window-splits' in NEW's splits slot. */ |
| 3832 | n->splits = Vwindow_splits; |
| 3833 | |
| 3834 | /* Directly assign orthogonal coordinates and sizes. */ |
| 3835 | if (horflag) |
| 3836 | { |
| 3837 | n->top_line = o->top_line; |
| 3838 | n->total_lines = o->total_lines; |
| 3839 | } |
| 3840 | else |
| 3841 | { |
| 3842 | n->left_col = o->left_col; |
| 3843 | n->total_cols = o->total_cols; |
| 3844 | } |
| 3845 | |
| 3846 | /* Iso-coordinates and sizes are assigned by window_resize_apply, |
| 3847 | get them ready here. */ |
| 3848 | n->new_total = total_size; |
| 3849 | n->new_normal = normal_size; |
| 3850 | |
| 3851 | BLOCK_INPUT; |
| 3852 | window_resize_apply (p, horflag); |
| 3853 | adjust_glyphs (f); |
| 3854 | /* Set buffer of NEW to buffer of reference window. Don't run |
| 3855 | any hooks. */ |
| 3856 | set_window_buffer (new, r->buffer, 0, 1); |
| 3857 | UNBLOCK_INPUT; |
| 3858 | |
| 3859 | /* Maybe we should run the scroll functions in Elisp (which already |
| 3860 | runs the configuration change hook). */ |
| 3861 | if (! NILP (Vwindow_scroll_functions)) |
| 3862 | run_hook_with_args_2 (Qwindow_scroll_functions, new, |
| 3863 | Fmarker_position (n->start)); |
| 3864 | /* Return NEW. */ |
| 3865 | return new; |
| 3866 | } |
| 3867 | |
| 3868 | |
| 3869 | DEFUN ("delete-window-internal", Fdelete_window_internal, Sdelete_window_internal, 1, 1, 0, |
| 3870 | doc: /* Remove WINDOW from its frame. |
| 3871 | WINDOW defaults to the selected window. Return nil. Signal an error |
| 3872 | when WINDOW is the only window on its frame. */) |
| 3873 | (register Lisp_Object window) |
| 3874 | { |
| 3875 | register Lisp_Object parent, sibling, frame, root; |
| 3876 | struct window *w, *p, *s, *r; |
| 3877 | struct frame *f; |
| 3878 | int horflag; |
| 3879 | int before_sibling = 0; |
| 3880 | |
| 3881 | w = decode_any_window (window); |
| 3882 | XSETWINDOW (window, w); |
| 3883 | if (NILP (w->buffer) && NILP (w->hchild) && NILP (w->vchild)) |
| 3884 | /* It's a no-op to delete an already deleted window. */ |
| 3885 | return Qnil; |
| 3886 | |
| 3887 | parent = w->parent; |
| 3888 | if (NILP (parent)) |
| 3889 | /* Never delete a minibuffer or frame root window. */ |
| 3890 | error ("Attempt to delete minibuffer or sole ordinary window"); |
| 3891 | else if (NILP (w->prev) && NILP (w->next)) |
| 3892 | /* Rather bow out here, this case should be handled on the Elisp |
| 3893 | level. */ |
| 3894 | error ("Attempt to delete sole window of parent"); |
| 3895 | |
| 3896 | p = XWINDOW (parent); |
| 3897 | horflag = NILP (p->vchild); |
| 3898 | |
| 3899 | frame = WINDOW_FRAME (w); |
| 3900 | f = XFRAME (frame); |
| 3901 | |
| 3902 | root = FRAME_ROOT_WINDOW (f); |
| 3903 | r = XWINDOW (root); |
| 3904 | |
| 3905 | /* Unlink WINDOW from window tree. */ |
| 3906 | if (NILP (w->prev)) |
| 3907 | /* Get SIBLING below (on the right of) WINDOW. */ |
| 3908 | { |
| 3909 | /* before_sibling 1 means WINDOW is the first child of its |
| 3910 | parent and thus before the sibling. */ |
| 3911 | before_sibling = 1; |
| 3912 | sibling = w->next; |
| 3913 | s = XWINDOW (sibling); |
| 3914 | s->prev = Qnil; |
| 3915 | if (horflag) |
| 3916 | p->hchild = sibling; |
| 3917 | else |
| 3918 | p->vchild = sibling; |
| 3919 | } |
| 3920 | else |
| 3921 | /* Get SIBLING above (on the left of) WINDOW. */ |
| 3922 | { |
| 3923 | sibling = w->prev; |
| 3924 | s = XWINDOW (sibling); |
| 3925 | s->next = w->next; |
| 3926 | if (!NILP (s->next)) |
| 3927 | XWINDOW (s->next)->prev = sibling; |
| 3928 | } |
| 3929 | |
| 3930 | if (window_resize_check (r, horflag) |
| 3931 | && EQ (r->new_total, (horflag ? r->total_cols : r->total_lines))) |
| 3932 | /* We can delete WINDOW now. */ |
| 3933 | { |
| 3934 | /* Block input. */ |
| 3935 | BLOCK_INPUT; |
| 3936 | window_resize_apply (p, horflag); |
| 3937 | |
| 3938 | windows_or_buffers_changed++; |
| 3939 | Vwindow_list = Qnil; |
| 3940 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
| 3941 | |
| 3942 | w->next = Qnil; /* Don't delete w->next too. */ |
| 3943 | free_window_matrices (w); |
| 3944 | |
| 3945 | if (!NILP (w->vchild)) |
| 3946 | { |
| 3947 | delete_all_subwindows (w->vchild); |
| 3948 | w->vchild = Qnil; |
| 3949 | } |
| 3950 | else if (!NILP (w->hchild)) |
| 3951 | { |
| 3952 | delete_all_subwindows (w->hchild); |
| 3953 | w->hchild = Qnil; |
| 3954 | } |
| 3955 | else if (!NILP (w->buffer)) |
| 3956 | { |
| 3957 | unshow_buffer (w); |
| 3958 | unchain_marker (XMARKER (w->pointm)); |
| 3959 | unchain_marker (XMARKER (w->start)); |
| 3960 | w->buffer = Qnil; |
| 3961 | } |
| 3962 | |
| 3963 | if (NILP (s->prev) && NILP (s->next)) |
| 3964 | /* A matrjoshka where SIBLING has become the only child of |
| 3965 | PARENT. */ |
| 3966 | { |
| 3967 | /* Put SIBLING into PARENT's place. */ |
| 3968 | replace_window (parent, sibling, 0); |
| 3969 | /* Have SIBLING inherit the following three slot values from |
| 3970 | PARENT (the nest slot is not inherited). */ |
| 3971 | s->normal_cols = p->normal_cols; |
| 3972 | s->normal_lines = p->normal_lines; |
| 3973 | s->splits = p->splits; |
| 3974 | /* Mark PARENT as deleted. */ |
| 3975 | p->vchild = p->hchild = Qnil; |
| 3976 | /* Try to merge SIBLING into its new parent. */ |
| 3977 | recombine_windows (sibling); |
| 3978 | } |
| 3979 | |
| 3980 | adjust_glyphs (f); |
| 3981 | |
| 3982 | if (!WINDOW_LIVE_P (FRAME_SELECTED_WINDOW (f))) |
| 3983 | /* We deleted the frame's selected window. */ |
| 3984 | { |
| 3985 | /* Use the frame's first window as fallback ... */ |
| 3986 | Lisp_Object new_selected_window = Fframe_first_window (frame); |
| 3987 | /* ... but preferably use its most recently used window. */ |
| 3988 | Lisp_Object mru_window; |
| 3989 | |
| 3990 | /* `get-mru-window' might fail for some reason so play it safe |
| 3991 | - promote the first window _without recording it_ first. */ |
| 3992 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) |
| 3993 | Fselect_window (new_selected_window, Qt); |
| 3994 | else |
| 3995 | FRAME_SELECTED_WINDOW (f) = new_selected_window; |
| 3996 | |
| 3997 | UNBLOCK_INPUT; |
| 3998 | |
| 3999 | /* Now look whether `get-mru-window' gets us something. */ |
| 4000 | mru_window = call1 (Qget_mru_window, frame); |
| 4001 | if (WINDOW_LIVE_P (mru_window) |
| 4002 | && EQ (XWINDOW (mru_window)->frame, frame)) |
| 4003 | new_selected_window = mru_window; |
| 4004 | |
| 4005 | /* If all ended up well, we now promote the mru window. */ |
| 4006 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) |
| 4007 | Fselect_window (new_selected_window, Qnil); |
| 4008 | else |
| 4009 | FRAME_SELECTED_WINDOW (f) = new_selected_window; |
| 4010 | } |
| 4011 | else |
| 4012 | UNBLOCK_INPUT; |
| 4013 | |
| 4014 | /* Must be run by the caller: |
| 4015 | run_window_configuration_change_hook (f); */ |
| 4016 | } |
| 4017 | else |
| 4018 | /* We failed: Relink WINDOW into window tree. */ |
| 4019 | { |
| 4020 | if (before_sibling) |
| 4021 | { |
| 4022 | s->prev = window; |
| 4023 | if (horflag) |
| 4024 | p->hchild = window; |
| 4025 | else |
| 4026 | p->vchild = window; |
| 4027 | } |
| 4028 | else |
| 4029 | { |
| 4030 | s->next = window; |
| 4031 | if (!NILP (w->next)) |
| 4032 | XWINDOW (w->next)->prev = window; |
| 4033 | } |
| 4034 | error ("Deletion failed"); |
| 4035 | } |
| 4036 | |
| 4037 | return Qnil; |
| 4038 | } |
| 4039 | \f |
| 4040 | /*********************************************************************** |
| 4041 | Resizing Mini-Windows |
| 4042 | ***********************************************************************/ |
| 4043 | |
| 4044 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we |
| 4045 | can. */ |
| 4046 | void |
| 4047 | grow_mini_window (struct window *w, int delta) |
| 4048 | { |
| 4049 | struct frame *f = XFRAME (w->frame); |
| 4050 | struct window *r; |
| 4051 | Lisp_Object root, value; |
| 4052 | |
| 4053 | xassert (MINI_WINDOW_P (w)); |
| 4054 | xassert (delta >= 0); |
| 4055 | |
| 4056 | root = FRAME_ROOT_WINDOW (f); |
| 4057 | r = XWINDOW (root); |
| 4058 | value = call2 (Qwindow_resize_root_window_vertically, |
| 4059 | root, make_number (- delta)); |
| 4060 | if (INTEGERP (value) && window_resize_check (r, 0)) |
| 4061 | { |
| 4062 | BLOCK_INPUT; |
| 4063 | window_resize_apply (r, 0); |
| 4064 | |
| 4065 | /* Grow the mini-window. */ |
| 4066 | XSETFASTINT (w->top_line, XFASTINT (r->top_line) + XFASTINT (r->total_lines)); |
| 4067 | XSETFASTINT (w->total_lines, XFASTINT (w->total_lines) - XINT (value)); |
| 4068 | XSETFASTINT (w->last_modified, 0); |
| 4069 | XSETFASTINT (w->last_overlay_modified, 0); |
| 4070 | |
| 4071 | adjust_glyphs (f); |
| 4072 | UNBLOCK_INPUT; |
| 4073 | } |
| 4074 | } |
| 4075 | |
| 4076 | |
| 4077 | /* Shrink mini-window W. */ |
| 4078 | void |
| 4079 | shrink_mini_window (struct window *w) |
| 4080 | { |
| 4081 | struct frame *f = XFRAME (w->frame); |
| 4082 | struct window *r; |
| 4083 | Lisp_Object root, value; |
| 4084 | EMACS_INT size; |
| 4085 | |
| 4086 | xassert (MINI_WINDOW_P (w)); |
| 4087 | |
| 4088 | size = XINT (w->total_lines); |
| 4089 | if (size > 1) |
| 4090 | { |
| 4091 | root = FRAME_ROOT_WINDOW (f); |
| 4092 | r = XWINDOW (root); |
| 4093 | value = call2 (Qwindow_resize_root_window_vertically, |
| 4094 | root, make_number (size - 1)); |
| 4095 | if (INTEGERP (value) && window_resize_check (r, 0)) |
| 4096 | { |
| 4097 | BLOCK_INPUT; |
| 4098 | window_resize_apply (r, 0); |
| 4099 | |
| 4100 | /* Shrink the mini-window. */ |
| 4101 | XSETFASTINT (w->top_line, XFASTINT (r->top_line) + XFASTINT (r->total_lines)); |
| 4102 | XSETFASTINT (w->total_lines, 1); |
| 4103 | |
| 4104 | XSETFASTINT (w->last_modified, 0); |
| 4105 | XSETFASTINT (w->last_overlay_modified, 0); |
| 4106 | |
| 4107 | adjust_glyphs (f); |
| 4108 | UNBLOCK_INPUT; |
| 4109 | } |
| 4110 | /* If the above failed for whatever strange reason we must make a |
| 4111 | one window frame here. The same routine will be needed when |
| 4112 | shrinking the frame (and probably when making the initial |
| 4113 | *scratch* window). For the moment leave things as they are. */ |
| 4114 | } |
| 4115 | } |
| 4116 | |
| 4117 | DEFUN ("resize-mini-window-internal", Fresize_mini_window_internal, Sresize_mini_window_internal, 1, 1, 0, |
| 4118 | doc: /* Resize minibuffer window WINDOW. */) |
| 4119 | (Lisp_Object window) |
| 4120 | { |
| 4121 | struct window *w = XWINDOW (window); |
| 4122 | struct window *r; |
| 4123 | struct frame *f; |
| 4124 | int height; |
| 4125 | |
| 4126 | CHECK_WINDOW (window); |
| 4127 | f = XFRAME (w->frame); |
| 4128 | |
| 4129 | if (!EQ (FRAME_MINIBUF_WINDOW (XFRAME (w->frame)), window)) |
| 4130 | error ("Not a valid minibuffer window"); |
| 4131 | else if (FRAME_MINIBUF_ONLY_P (f)) |
| 4132 | error ("Cannot resize a minibuffer-only frame"); |
| 4133 | |
| 4134 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); |
| 4135 | height = XINT (r->total_lines) + XINT (w->total_lines); |
| 4136 | if (window_resize_check (r, 0) |
| 4137 | && XINT (w->new_total) > 0 |
| 4138 | && height == XINT (r->new_total) + XINT (w->new_total)) |
| 4139 | { |
| 4140 | BLOCK_INPUT; |
| 4141 | window_resize_apply (r, 0); |
| 4142 | |
| 4143 | w->total_lines = w->new_total; |
| 4144 | XSETFASTINT (w->top_line, XINT (r->top_line) + XINT (r->total_lines)); |
| 4145 | |
| 4146 | windows_or_buffers_changed++; |
| 4147 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
| 4148 | adjust_glyphs (f); |
| 4149 | UNBLOCK_INPUT; |
| 4150 | |
| 4151 | run_window_configuration_change_hook (f); |
| 4152 | return Qt; |
| 4153 | } |
| 4154 | else error ("Failed to resize minibuffer window"); |
| 4155 | } |
| 4156 | \f |
| 4157 | /* Mark window cursors off for all windows in the window tree rooted |
| 4158 | at W by setting their phys_cursor_on_p flag to zero. Called from |
| 4159 | xterm.c, e.g. when a frame is cleared and thereby all cursors on |
| 4160 | the frame are cleared. */ |
| 4161 | |
| 4162 | void |
| 4163 | mark_window_cursors_off (struct window *w) |
| 4164 | { |
| 4165 | while (w) |
| 4166 | { |
| 4167 | if (!NILP (w->hchild)) |
| 4168 | mark_window_cursors_off (XWINDOW (w->hchild)); |
| 4169 | else if (!NILP (w->vchild)) |
| 4170 | mark_window_cursors_off (XWINDOW (w->vchild)); |
| 4171 | else |
| 4172 | w->phys_cursor_on_p = 0; |
| 4173 | |
| 4174 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
| 4175 | } |
| 4176 | } |
| 4177 | |
| 4178 | |
| 4179 | /* Return number of lines of text (not counting mode lines) in W. */ |
| 4180 | |
| 4181 | int |
| 4182 | window_internal_height (struct window *w) |
| 4183 | { |
| 4184 | int ht = XFASTINT (w->total_lines); |
| 4185 | |
| 4186 | if (!MINI_WINDOW_P (w)) |
| 4187 | { |
| 4188 | if (!NILP (w->parent) |
| 4189 | || !NILP (w->vchild) |
| 4190 | || !NILP (w->hchild) |
| 4191 | || !NILP (w->next) |
| 4192 | || !NILP (w->prev) |
| 4193 | || WINDOW_WANTS_MODELINE_P (w)) |
| 4194 | --ht; |
| 4195 | |
| 4196 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
| 4197 | --ht; |
| 4198 | } |
| 4199 | |
| 4200 | return ht; |
| 4201 | } |
| 4202 | \f |
| 4203 | /************************************************************************ |
| 4204 | Window Scrolling |
| 4205 | ***********************************************************************/ |
| 4206 | |
| 4207 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
| 4208 | N screen-fulls, which is defined as the height of the window minus |
| 4209 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
| 4210 | instead. Negative values of N mean scroll down. NOERROR non-zero |
| 4211 | means don't signal an error if we try to move over BEGV or ZV, |
| 4212 | respectively. */ |
| 4213 | |
| 4214 | static void |
| 4215 | window_scroll (Lisp_Object window, int n, int whole, int noerror) |
| 4216 | { |
| 4217 | immediate_quit = 1; |
| 4218 | |
| 4219 | /* If we must, use the pixel-based version which is much slower than |
| 4220 | the line-based one but can handle varying line heights. */ |
| 4221 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) |
| 4222 | window_scroll_pixel_based (window, n, whole, noerror); |
| 4223 | else |
| 4224 | window_scroll_line_based (window, n, whole, noerror); |
| 4225 | |
| 4226 | immediate_quit = 0; |
| 4227 | } |
| 4228 | |
| 4229 | |
| 4230 | /* Implementation of window_scroll that works based on pixel line |
| 4231 | heights. See the comment of window_scroll for parameter |
| 4232 | descriptions. */ |
| 4233 | |
| 4234 | static void |
| 4235 | window_scroll_pixel_based (Lisp_Object window, int n, int whole, int noerror) |
| 4236 | { |
| 4237 | struct it it; |
| 4238 | struct window *w = XWINDOW (window); |
| 4239 | struct text_pos start; |
| 4240 | int this_scroll_margin; |
| 4241 | /* True if we fiddled the window vscroll field without really scrolling. */ |
| 4242 | int vscrolled = 0; |
| 4243 | int x, y, rtop, rbot, rowh, vpos; |
| 4244 | void *itdata = NULL; |
| 4245 | |
| 4246 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
| 4247 | |
| 4248 | /* If PT is not visible in WINDOW, move back one half of |
| 4249 | the screen. Allow PT to be partially visible, otherwise |
| 4250 | something like (scroll-down 1) with PT in the line before |
| 4251 | the partially visible one would recenter. */ |
| 4252 | |
| 4253 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) |
| 4254 | { |
| 4255 | itdata = bidi_shelve_cache (); |
| 4256 | /* Move backward half the height of the window. Performance note: |
| 4257 | vmotion used here is about 10% faster, but would give wrong |
| 4258 | results for variable height lines. */ |
| 4259 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); |
| 4260 | it.current_y = it.last_visible_y; |
| 4261 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
| 4262 | |
| 4263 | /* The function move_iterator_vertically may move over more than |
| 4264 | the specified y-distance. If it->w is small, e.g. a |
| 4265 | mini-buffer window, we may end up in front of the window's |
| 4266 | display area. This is the case when Start displaying at the |
| 4267 | start of the line containing PT in this case. */ |
| 4268 | if (it.current_y <= 0) |
| 4269 | { |
| 4270 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); |
| 4271 | move_it_vertically_backward (&it, 0); |
| 4272 | it.current_y = 0; |
| 4273 | } |
| 4274 | |
| 4275 | start = it.current.pos; |
| 4276 | bidi_unshelve_cache (itdata, 0); |
| 4277 | } |
| 4278 | else if (auto_window_vscroll_p) |
| 4279 | { |
| 4280 | if (rtop || rbot) /* partially visible */ |
| 4281 | { |
| 4282 | int px; |
| 4283 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); |
| 4284 | if (whole) |
| 4285 | dy = max ((window_box_height (w) |
| 4286 | - next_screen_context_lines * dy), |
| 4287 | dy); |
| 4288 | dy *= n; |
| 4289 | |
| 4290 | if (n < 0) |
| 4291 | { |
| 4292 | /* Only vscroll backwards if already vscrolled forwards. */ |
| 4293 | if (w->vscroll < 0 && rtop > 0) |
| 4294 | { |
| 4295 | px = max (0, -w->vscroll - min (rtop, -dy)); |
| 4296 | Fset_window_vscroll (window, make_number (px), Qt); |
| 4297 | return; |
| 4298 | } |
| 4299 | } |
| 4300 | if (n > 0) |
| 4301 | { |
| 4302 | /* Do vscroll if already vscrolled or only display line. */ |
| 4303 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) |
| 4304 | { |
| 4305 | px = max (0, -w->vscroll + min (rbot, dy)); |
| 4306 | Fset_window_vscroll (window, make_number (px), Qt); |
| 4307 | return; |
| 4308 | } |
| 4309 | |
| 4310 | /* Maybe modify window start instead of scrolling. */ |
| 4311 | if (rbot > 0 || w->vscroll < 0) |
| 4312 | { |
| 4313 | EMACS_INT spos; |
| 4314 | |
| 4315 | Fset_window_vscroll (window, make_number (0), Qt); |
| 4316 | /* If there are other text lines above the current row, |
| 4317 | move window start to current row. Else to next row. */ |
| 4318 | if (rbot > 0) |
| 4319 | spos = XINT (Fline_beginning_position (Qnil)); |
| 4320 | else |
| 4321 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); |
| 4322 | set_marker_restricted (w->start, make_number (spos), |
| 4323 | w->buffer); |
| 4324 | w->start_at_line_beg = Qt; |
| 4325 | w->update_mode_line = Qt; |
| 4326 | XSETFASTINT (w->last_modified, 0); |
| 4327 | XSETFASTINT (w->last_overlay_modified, 0); |
| 4328 | /* Set force_start so that redisplay_window will run the |
| 4329 | window-scroll-functions. */ |
| 4330 | w->force_start = Qt; |
| 4331 | return; |
| 4332 | } |
| 4333 | } |
| 4334 | } |
| 4335 | /* Cancel previous vscroll. */ |
| 4336 | Fset_window_vscroll (window, make_number (0), Qt); |
| 4337 | } |
| 4338 | |
| 4339 | itdata = bidi_shelve_cache (); |
| 4340 | /* If scroll_preserve_screen_position is non-nil, we try to set |
| 4341 | point in the same window line as it is now, so get that line. */ |
| 4342 | if (!NILP (Vscroll_preserve_screen_position)) |
| 4343 | { |
| 4344 | /* We preserve the goal pixel coordinate across consecutive |
| 4345 | calls to scroll-up, scroll-down and other commands that |
| 4346 | have the `scroll-command' property. This avoids the |
| 4347 | possibility of point becoming "stuck" on a tall line when |
| 4348 | scrolling by one line. */ |
| 4349 | if (window_scroll_pixel_based_preserve_y < 0 |
| 4350 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
| 4351 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) |
| 4352 | { |
| 4353 | start_display (&it, w, start); |
| 4354 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); |
| 4355 | window_scroll_pixel_based_preserve_y = it.current_y; |
| 4356 | window_scroll_pixel_based_preserve_x = it.current_x; |
| 4357 | } |
| 4358 | } |
| 4359 | else |
| 4360 | window_scroll_pixel_based_preserve_y |
| 4361 | = window_scroll_pixel_based_preserve_x = -1; |
| 4362 | |
| 4363 | /* Move iterator it from start the specified distance forward or |
| 4364 | backward. The result is the new window start. */ |
| 4365 | start_display (&it, w, start); |
| 4366 | if (whole) |
| 4367 | { |
| 4368 | EMACS_INT start_pos = IT_CHARPOS (it); |
| 4369 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); |
| 4370 | dy = max ((window_box_height (w) |
| 4371 | - next_screen_context_lines * dy), |
| 4372 | dy) * n; |
| 4373 | |
| 4374 | /* Note that move_it_vertically always moves the iterator to the |
| 4375 | start of a line. So, if the last line doesn't have a newline, |
| 4376 | we would end up at the start of the line ending at ZV. */ |
| 4377 | if (dy <= 0) |
| 4378 | { |
| 4379 | move_it_vertically_backward (&it, -dy); |
| 4380 | /* Ensure we actually do move, e.g. in case we are currently |
| 4381 | looking at an image that is taller that the window height. */ |
| 4382 | while (start_pos == IT_CHARPOS (it) |
| 4383 | && start_pos > BEGV) |
| 4384 | move_it_by_lines (&it, -1); |
| 4385 | } |
| 4386 | else if (dy > 0) |
| 4387 | { |
| 4388 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
| 4389 | MOVE_TO_POS | MOVE_TO_Y); |
| 4390 | /* Ensure we actually do move, e.g. in case we are currently |
| 4391 | looking at an image that is taller that the window height. */ |
| 4392 | while (start_pos == IT_CHARPOS (it) |
| 4393 | && start_pos < ZV) |
| 4394 | move_it_by_lines (&it, 1); |
| 4395 | } |
| 4396 | } |
| 4397 | else |
| 4398 | move_it_by_lines (&it, n); |
| 4399 | |
| 4400 | /* We failed if we find ZV is already on the screen (scrolling up, |
| 4401 | means there's nothing past the end), or if we can't start any |
| 4402 | earlier (scrolling down, means there's nothing past the top). */ |
| 4403 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
| 4404 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
| 4405 | { |
| 4406 | if (IT_CHARPOS (it) == ZV) |
| 4407 | { |
| 4408 | if (it.current_y < it.last_visible_y |
| 4409 | && (it.current_y + it.max_ascent + it.max_descent |
| 4410 | > it.last_visible_y)) |
| 4411 | { |
| 4412 | /* The last line was only partially visible, make it fully |
| 4413 | visible. */ |
| 4414 | w->vscroll = (it.last_visible_y |
| 4415 | - it.current_y + it.max_ascent + it.max_descent); |
| 4416 | adjust_glyphs (it.f); |
| 4417 | } |
| 4418 | else |
| 4419 | { |
| 4420 | bidi_unshelve_cache (itdata, 0); |
| 4421 | if (noerror) |
| 4422 | return; |
| 4423 | else if (n < 0) /* could happen with empty buffers */ |
| 4424 | xsignal0 (Qbeginning_of_buffer); |
| 4425 | else |
| 4426 | xsignal0 (Qend_of_buffer); |
| 4427 | } |
| 4428 | } |
| 4429 | else |
| 4430 | { |
| 4431 | if (w->vscroll != 0) |
| 4432 | /* The first line was only partially visible, make it fully |
| 4433 | visible. */ |
| 4434 | w->vscroll = 0; |
| 4435 | else |
| 4436 | { |
| 4437 | bidi_unshelve_cache (itdata, 0); |
| 4438 | if (noerror) |
| 4439 | return; |
| 4440 | else |
| 4441 | xsignal0 (Qbeginning_of_buffer); |
| 4442 | } |
| 4443 | } |
| 4444 | |
| 4445 | /* If control gets here, then we vscrolled. */ |
| 4446 | |
| 4447 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
| 4448 | |
| 4449 | /* Don't try to change the window start below. */ |
| 4450 | vscrolled = 1; |
| 4451 | } |
| 4452 | |
| 4453 | if (! vscrolled) |
| 4454 | { |
| 4455 | EMACS_INT pos = IT_CHARPOS (it); |
| 4456 | EMACS_INT bytepos; |
| 4457 | |
| 4458 | /* If in the middle of a multi-glyph character move forward to |
| 4459 | the next character. */ |
| 4460 | if (in_display_vector_p (&it)) |
| 4461 | { |
| 4462 | ++pos; |
| 4463 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); |
| 4464 | } |
| 4465 | |
| 4466 | /* Set the window start, and set up the window for redisplay. */ |
| 4467 | set_marker_restricted (w->start, make_number (pos), |
| 4468 | w->buffer); |
| 4469 | bytepos = XMARKER (w->start)->bytepos; |
| 4470 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') |
| 4471 | ? Qt : Qnil); |
| 4472 | w->update_mode_line = Qt; |
| 4473 | XSETFASTINT (w->last_modified, 0); |
| 4474 | XSETFASTINT (w->last_overlay_modified, 0); |
| 4475 | /* Set force_start so that redisplay_window will run the |
| 4476 | window-scroll-functions. */ |
| 4477 | w->force_start = Qt; |
| 4478 | } |
| 4479 | |
| 4480 | /* The rest of this function uses current_y in a nonstandard way, |
| 4481 | not including the height of the header line if any. */ |
| 4482 | it.current_y = it.vpos = 0; |
| 4483 | |
| 4484 | /* Move PT out of scroll margins. |
| 4485 | This code wants current_y to be zero at the window start position |
| 4486 | even if there is a header line. */ |
| 4487 | this_scroll_margin = max (0, scroll_margin); |
| 4488 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); |
| 4489 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); |
| 4490 | |
| 4491 | if (n > 0) |
| 4492 | { |
| 4493 | /* We moved the window start towards ZV, so PT may be now |
| 4494 | in the scroll margin at the top. */ |
| 4495 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); |
| 4496 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
| 4497 | && (NILP (Vscroll_preserve_screen_position) |
| 4498 | || EQ (Vscroll_preserve_screen_position, Qt))) |
| 4499 | /* We found PT at a legitimate height. Leave it alone. */ |
| 4500 | ; |
| 4501 | else if (window_scroll_pixel_based_preserve_y >= 0) |
| 4502 | { |
| 4503 | /* If we have a header line, take account of it. |
| 4504 | This is necessary because we set it.current_y to 0, above. */ |
| 4505 | move_it_to (&it, -1, |
| 4506 | window_scroll_pixel_based_preserve_x, |
| 4507 | window_scroll_pixel_based_preserve_y |
| 4508 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), |
| 4509 | -1, MOVE_TO_Y | MOVE_TO_X); |
| 4510 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
| 4511 | } |
| 4512 | else |
| 4513 | { |
| 4514 | while (it.current_y < this_scroll_margin) |
| 4515 | { |
| 4516 | int prev = it.current_y; |
| 4517 | move_it_by_lines (&it, 1); |
| 4518 | if (prev == it.current_y) |
| 4519 | break; |
| 4520 | } |
| 4521 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
| 4522 | } |
| 4523 | } |
| 4524 | else if (n < 0) |
| 4525 | { |
| 4526 | EMACS_INT charpos, bytepos; |
| 4527 | int partial_p; |
| 4528 | |
| 4529 | /* Save our position, for the |
| 4530 | window_scroll_pixel_based_preserve_y case. */ |
| 4531 | charpos = IT_CHARPOS (it); |
| 4532 | bytepos = IT_BYTEPOS (it); |
| 4533 | |
| 4534 | /* We moved the window start towards BEGV, so PT may be now |
| 4535 | in the scroll margin at the bottom. */ |
| 4536 | move_it_to (&it, PT, -1, |
| 4537 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
| 4538 | - this_scroll_margin - 1), |
| 4539 | -1, |
| 4540 | MOVE_TO_POS | MOVE_TO_Y); |
| 4541 | |
| 4542 | /* Save our position, in case it's correct. */ |
| 4543 | charpos = IT_CHARPOS (it); |
| 4544 | bytepos = IT_BYTEPOS (it); |
| 4545 | |
| 4546 | /* See if point is on a partially visible line at the end. */ |
| 4547 | if (it.what == IT_EOB) |
| 4548 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; |
| 4549 | else |
| 4550 | { |
| 4551 | move_it_by_lines (&it, 1); |
| 4552 | partial_p = it.current_y > it.last_visible_y; |
| 4553 | } |
| 4554 | |
| 4555 | if (charpos == PT && !partial_p |
| 4556 | && (NILP (Vscroll_preserve_screen_position) |
| 4557 | || EQ (Vscroll_preserve_screen_position, Qt))) |
| 4558 | /* We found PT before we found the display margin, so PT is ok. */ |
| 4559 | ; |
| 4560 | else if (window_scroll_pixel_based_preserve_y >= 0) |
| 4561 | { |
| 4562 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
| 4563 | start_display (&it, w, start); |
| 4564 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
| 4565 | here because we called start_display again and did not |
| 4566 | alter it.current_y this time. */ |
| 4567 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
| 4568 | window_scroll_pixel_based_preserve_y, -1, |
| 4569 | MOVE_TO_Y | MOVE_TO_X); |
| 4570 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
| 4571 | } |
| 4572 | else |
| 4573 | { |
| 4574 | if (partial_p) |
| 4575 | /* The last line was only partially visible, so back up two |
| 4576 | lines to make sure we're on a fully visible line. */ |
| 4577 | { |
| 4578 | move_it_by_lines (&it, -2); |
| 4579 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
| 4580 | } |
| 4581 | else |
| 4582 | /* No, the position we saved is OK, so use it. */ |
| 4583 | SET_PT_BOTH (charpos, bytepos); |
| 4584 | } |
| 4585 | } |
| 4586 | bidi_unshelve_cache (itdata, 0); |
| 4587 | } |
| 4588 | |
| 4589 | |
| 4590 | /* Implementation of window_scroll that works based on screen lines. |
| 4591 | See the comment of window_scroll for parameter descriptions. */ |
| 4592 | |
| 4593 | static void |
| 4594 | window_scroll_line_based (Lisp_Object window, int n, int whole, int noerror) |
| 4595 | { |
| 4596 | register struct window *w = XWINDOW (window); |
| 4597 | /* Fvertical_motion enters redisplay, which can trigger |
| 4598 | fontification, which in turn can modify buffer text (e.g., if the |
| 4599 | fontification functions replace escape sequences with faces, as |
| 4600 | in `grep-mode-font-lock-keywords'). So we use a marker to record |
| 4601 | the old point position, to prevent crashes in SET_PT_BOTH. */ |
| 4602 | Lisp_Object opoint_marker = Fpoint_marker (); |
| 4603 | register EMACS_INT pos, pos_byte; |
| 4604 | register int ht = window_internal_height (w); |
| 4605 | register Lisp_Object tem; |
| 4606 | int lose; |
| 4607 | Lisp_Object bolp; |
| 4608 | EMACS_INT startpos; |
| 4609 | Lisp_Object original_pos = Qnil; |
| 4610 | |
| 4611 | /* If scrolling screen-fulls, compute the number of lines to |
| 4612 | scroll from the window's height. */ |
| 4613 | if (whole) |
| 4614 | n *= max (1, ht - next_screen_context_lines); |
| 4615 | |
| 4616 | startpos = marker_position (w->start); |
| 4617 | |
| 4618 | if (!NILP (Vscroll_preserve_screen_position)) |
| 4619 | { |
| 4620 | if (window_scroll_preserve_vpos <= 0 |
| 4621 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
| 4622 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) |
| 4623 | { |
| 4624 | struct position posit |
| 4625 | = *compute_motion (startpos, 0, 0, 0, |
| 4626 | PT, ht, 0, |
| 4627 | -1, XINT (w->hscroll), |
| 4628 | 0, w); |
| 4629 | window_scroll_preserve_vpos = posit.vpos; |
| 4630 | window_scroll_preserve_hpos = posit.hpos + XINT (w->hscroll); |
| 4631 | } |
| 4632 | |
| 4633 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), |
| 4634 | make_number (window_scroll_preserve_vpos)); |
| 4635 | } |
| 4636 | |
| 4637 | XSETFASTINT (tem, PT); |
| 4638 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
| 4639 | |
| 4640 | if (NILP (tem)) |
| 4641 | { |
| 4642 | Fvertical_motion (make_number (- (ht / 2)), window); |
| 4643 | startpos = PT; |
| 4644 | } |
| 4645 | |
| 4646 | SET_PT (startpos); |
| 4647 | lose = n < 0 && PT == BEGV; |
| 4648 | Fvertical_motion (make_number (n), window); |
| 4649 | pos = PT; |
| 4650 | pos_byte = PT_BYTE; |
| 4651 | bolp = Fbolp (); |
| 4652 | SET_PT_BOTH (marker_position (opoint_marker), |
| 4653 | marker_byte_position (opoint_marker)); |
| 4654 | |
| 4655 | if (lose) |
| 4656 | { |
| 4657 | if (noerror) |
| 4658 | return; |
| 4659 | else |
| 4660 | xsignal0 (Qbeginning_of_buffer); |
| 4661 | } |
| 4662 | |
| 4663 | if (pos < ZV) |
| 4664 | { |
| 4665 | /* Don't use a scroll margin that is negative or too large. */ |
| 4666 | int this_scroll_margin = |
| 4667 | max (0, min (scroll_margin, XINT (w->total_lines) / 4)); |
| 4668 | |
| 4669 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
| 4670 | w->start_at_line_beg = bolp; |
| 4671 | w->update_mode_line = Qt; |
| 4672 | XSETFASTINT (w->last_modified, 0); |
| 4673 | XSETFASTINT (w->last_overlay_modified, 0); |
| 4674 | /* Set force_start so that redisplay_window will run |
| 4675 | the window-scroll-functions. */ |
| 4676 | w->force_start = Qt; |
| 4677 | |
| 4678 | if (!NILP (Vscroll_preserve_screen_position) |
| 4679 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) |
| 4680 | { |
| 4681 | SET_PT_BOTH (pos, pos_byte); |
| 4682 | Fvertical_motion (original_pos, window); |
| 4683 | } |
| 4684 | /* If we scrolled forward, put point enough lines down |
| 4685 | that it is outside the scroll margin. */ |
| 4686 | else if (n > 0) |
| 4687 | { |
| 4688 | int top_margin; |
| 4689 | |
| 4690 | if (this_scroll_margin > 0) |
| 4691 | { |
| 4692 | SET_PT_BOTH (pos, pos_byte); |
| 4693 | Fvertical_motion (make_number (this_scroll_margin), window); |
| 4694 | top_margin = PT; |
| 4695 | } |
| 4696 | else |
| 4697 | top_margin = pos; |
| 4698 | |
| 4699 | if (top_margin <= marker_position (opoint_marker)) |
| 4700 | SET_PT_BOTH (marker_position (opoint_marker), |
| 4701 | marker_byte_position (opoint_marker)); |
| 4702 | else if (!NILP (Vscroll_preserve_screen_position)) |
| 4703 | { |
| 4704 | SET_PT_BOTH (pos, pos_byte); |
| 4705 | Fvertical_motion (original_pos, window); |
| 4706 | } |
| 4707 | else |
| 4708 | SET_PT (top_margin); |
| 4709 | } |
| 4710 | else if (n < 0) |
| 4711 | { |
| 4712 | int bottom_margin; |
| 4713 | |
| 4714 | /* If we scrolled backward, put point near the end of the window |
| 4715 | but not within the scroll margin. */ |
| 4716 | SET_PT_BOTH (pos, pos_byte); |
| 4717 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
| 4718 | if (XFASTINT (tem) == ht - this_scroll_margin) |
| 4719 | bottom_margin = PT; |
| 4720 | else |
| 4721 | bottom_margin = PT + 1; |
| 4722 | |
| 4723 | if (bottom_margin > marker_position (opoint_marker)) |
| 4724 | SET_PT_BOTH (marker_position (opoint_marker), |
| 4725 | marker_byte_position (opoint_marker)); |
| 4726 | else |
| 4727 | { |
| 4728 | if (!NILP (Vscroll_preserve_screen_position)) |
| 4729 | { |
| 4730 | SET_PT_BOTH (pos, pos_byte); |
| 4731 | Fvertical_motion (original_pos, window); |
| 4732 | } |
| 4733 | else |
| 4734 | Fvertical_motion (make_number (-1), window); |
| 4735 | } |
| 4736 | } |
| 4737 | } |
| 4738 | else |
| 4739 | { |
| 4740 | if (noerror) |
| 4741 | return; |
| 4742 | else |
| 4743 | xsignal0 (Qend_of_buffer); |
| 4744 | } |
| 4745 | } |
| 4746 | |
| 4747 | |
| 4748 | /* Scroll selected_window up or down. If N is nil, scroll a |
| 4749 | screen-full which is defined as the height of the window minus |
| 4750 | next_screen_context_lines. If N is the symbol `-', scroll. |
| 4751 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll |
| 4752 | up. This is the guts of Fscroll_up and Fscroll_down. */ |
| 4753 | |
| 4754 | static void |
| 4755 | scroll_command (Lisp_Object n, int direction) |
| 4756 | { |
| 4757 | int count = SPECPDL_INDEX (); |
| 4758 | |
| 4759 | xassert (eabs (direction) == 1); |
| 4760 | |
| 4761 | /* If selected window's buffer isn't current, make it current for |
| 4762 | the moment. But don't screw up if window_scroll gets an error. */ |
| 4763 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
| 4764 | { |
| 4765 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
| 4766 | Fset_buffer (XWINDOW (selected_window)->buffer); |
| 4767 | |
| 4768 | /* Make redisplay consider other windows than just selected_window. */ |
| 4769 | ++windows_or_buffers_changed; |
| 4770 | } |
| 4771 | |
| 4772 | if (NILP (n)) |
| 4773 | window_scroll (selected_window, direction, 1, 0); |
| 4774 | else if (EQ (n, Qminus)) |
| 4775 | window_scroll (selected_window, -direction, 1, 0); |
| 4776 | else |
| 4777 | { |
| 4778 | n = Fprefix_numeric_value (n); |
| 4779 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
| 4780 | } |
| 4781 | |
| 4782 | unbind_to (count, Qnil); |
| 4783 | } |
| 4784 | |
| 4785 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
| 4786 | doc: /* Scroll text of selected window upward ARG lines. |
| 4787 | If ARG is omitted or nil, scroll upward by a near full screen. |
| 4788 | A near full screen is `next-screen-context-lines' less than a full screen. |
| 4789 | Negative ARG means scroll downward. |
| 4790 | If ARG is the atom `-', scroll downward by nearly full screen. |
| 4791 | When calling from a program, supply as argument a number, nil, or `-'. */) |
| 4792 | (Lisp_Object arg) |
| 4793 | { |
| 4794 | scroll_command (arg, 1); |
| 4795 | return Qnil; |
| 4796 | } |
| 4797 | |
| 4798 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
| 4799 | doc: /* Scroll text of selected window down ARG lines. |
| 4800 | If ARG is omitted or nil, scroll down by a near full screen. |
| 4801 | A near full screen is `next-screen-context-lines' less than a full screen. |
| 4802 | Negative ARG means scroll upward. |
| 4803 | If ARG is the atom `-', scroll upward by nearly full screen. |
| 4804 | When calling from a program, supply as argument a number, nil, or `-'. */) |
| 4805 | (Lisp_Object arg) |
| 4806 | { |
| 4807 | scroll_command (arg, -1); |
| 4808 | return Qnil; |
| 4809 | } |
| 4810 | \f |
| 4811 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, |
| 4812 | doc: /* Return the other window for \"other window scroll\" commands. |
| 4813 | If `other-window-scroll-buffer' is non-nil, a window |
| 4814 | showing that buffer is used. |
| 4815 | If in the minibuffer, `minibuffer-scroll-window' if non-nil |
| 4816 | specifies the window. This takes precedence over |
| 4817 | `other-window-scroll-buffer'. */) |
| 4818 | (void) |
| 4819 | { |
| 4820 | Lisp_Object window; |
| 4821 | |
| 4822 | if (MINI_WINDOW_P (XWINDOW (selected_window)) |
| 4823 | && !NILP (Vminibuf_scroll_window)) |
| 4824 | window = Vminibuf_scroll_window; |
| 4825 | /* If buffer is specified, scroll that buffer. */ |
| 4826 | else if (!NILP (Vother_window_scroll_buffer)) |
| 4827 | { |
| 4828 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); |
| 4829 | if (NILP (window)) |
| 4830 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
| 4831 | } |
| 4832 | else |
| 4833 | { |
| 4834 | /* Nothing specified; look for a neighboring window on the same |
| 4835 | frame. */ |
| 4836 | window = Fnext_window (selected_window, Qnil, Qnil); |
| 4837 | |
| 4838 | if (EQ (window, selected_window)) |
| 4839 | /* That didn't get us anywhere; look for a window on another |
| 4840 | visible frame. */ |
| 4841 | do |
| 4842 | window = Fnext_window (window, Qnil, Qt); |
| 4843 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) |
| 4844 | && ! EQ (window, selected_window)); |
| 4845 | } |
| 4846 | |
| 4847 | CHECK_LIVE_WINDOW (window); |
| 4848 | |
| 4849 | if (EQ (window, selected_window)) |
| 4850 | error ("There is no other window"); |
| 4851 | |
| 4852 | return window; |
| 4853 | } |
| 4854 | |
| 4855 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", |
| 4856 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
| 4857 | A near full screen is `next-screen-context-lines' less than a full screen. |
| 4858 | The next window is the one below the current one; or the one at the top |
| 4859 | if the current one is at the bottom. Negative ARG means scroll downward. |
| 4860 | If ARG is the atom `-', scroll downward by nearly full screen. |
| 4861 | When calling from a program, supply as argument a number, nil, or `-'. |
| 4862 | |
| 4863 | If `other-window-scroll-buffer' is non-nil, scroll the window |
| 4864 | showing that buffer, popping the buffer up if necessary. |
| 4865 | If in the minibuffer, `minibuffer-scroll-window' if non-nil |
| 4866 | specifies the window to scroll. This takes precedence over |
| 4867 | `other-window-scroll-buffer'. */) |
| 4868 | (Lisp_Object arg) |
| 4869 | { |
| 4870 | Lisp_Object window; |
| 4871 | struct window *w; |
| 4872 | int count = SPECPDL_INDEX (); |
| 4873 | |
| 4874 | window = Fother_window_for_scrolling (); |
| 4875 | w = XWINDOW (window); |
| 4876 | |
| 4877 | /* Don't screw up if window_scroll gets an error. */ |
| 4878 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
| 4879 | ++windows_or_buffers_changed; |
| 4880 | |
| 4881 | Fset_buffer (w->buffer); |
| 4882 | SET_PT (marker_position (w->pointm)); |
| 4883 | |
| 4884 | if (NILP (arg)) |
| 4885 | window_scroll (window, 1, 1, 1); |
| 4886 | else if (EQ (arg, Qminus)) |
| 4887 | window_scroll (window, -1, 1, 1); |
| 4888 | else |
| 4889 | { |
| 4890 | if (CONSP (arg)) |
| 4891 | arg = Fcar (arg); |
| 4892 | CHECK_NUMBER (arg); |
| 4893 | window_scroll (window, XINT (arg), 0, 1); |
| 4894 | } |
| 4895 | |
| 4896 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
| 4897 | unbind_to (count, Qnil); |
| 4898 | |
| 4899 | return Qnil; |
| 4900 | } |
| 4901 | \f |
| 4902 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
| 4903 | doc: /* Scroll selected window display ARG columns left. |
| 4904 | Default for ARG is window width minus 2. |
| 4905 | Value is the total amount of leftward horizontal scrolling in |
| 4906 | effect after the change. |
| 4907 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
| 4908 | lower bound for automatic scrolling, i.e. automatic scrolling |
| 4909 | will not scroll a window to a column less than the value returned |
| 4910 | by this function. This happens in an interactive call. */) |
| 4911 | (register Lisp_Object arg, Lisp_Object set_minimum) |
| 4912 | { |
| 4913 | Lisp_Object result; |
| 4914 | int hscroll; |
| 4915 | struct window *w = XWINDOW (selected_window); |
| 4916 | |
| 4917 | if (NILP (arg)) |
| 4918 | XSETFASTINT (arg, window_body_cols (w) - 2); |
| 4919 | else |
| 4920 | arg = Fprefix_numeric_value (arg); |
| 4921 | |
| 4922 | hscroll = XINT (w->hscroll) + XINT (arg); |
| 4923 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); |
| 4924 | |
| 4925 | if (!NILP (set_minimum)) |
| 4926 | w->min_hscroll = w->hscroll; |
| 4927 | |
| 4928 | return result; |
| 4929 | } |
| 4930 | |
| 4931 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
| 4932 | doc: /* Scroll selected window display ARG columns right. |
| 4933 | Default for ARG is window width minus 2. |
| 4934 | Value is the total amount of leftward horizontal scrolling in |
| 4935 | effect after the change. |
| 4936 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
| 4937 | lower bound for automatic scrolling, i.e. automatic scrolling |
| 4938 | will not scroll a window to a column less than the value returned |
| 4939 | by this function. This happens in an interactive call. */) |
| 4940 | (register Lisp_Object arg, Lisp_Object set_minimum) |
| 4941 | { |
| 4942 | Lisp_Object result; |
| 4943 | int hscroll; |
| 4944 | struct window *w = XWINDOW (selected_window); |
| 4945 | |
| 4946 | if (NILP (arg)) |
| 4947 | XSETFASTINT (arg, window_body_cols (w) - 2); |
| 4948 | else |
| 4949 | arg = Fprefix_numeric_value (arg); |
| 4950 | |
| 4951 | hscroll = XINT (w->hscroll) - XINT (arg); |
| 4952 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); |
| 4953 | |
| 4954 | if (!NILP (set_minimum)) |
| 4955 | w->min_hscroll = w->hscroll; |
| 4956 | |
| 4957 | return result; |
| 4958 | } |
| 4959 | |
| 4960 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
| 4961 | doc: /* Return the window which was selected when entering the minibuffer. |
| 4962 | Returns nil, if selected window is not a minibuffer window. */) |
| 4963 | (void) |
| 4964 | { |
| 4965 | if (minibuf_level > 0 |
| 4966 | && MINI_WINDOW_P (XWINDOW (selected_window)) |
| 4967 | && WINDOW_LIVE_P (minibuf_selected_window)) |
| 4968 | return minibuf_selected_window; |
| 4969 | |
| 4970 | return Qnil; |
| 4971 | } |
| 4972 | |
| 4973 | /* Value is the number of lines actually displayed in window W, |
| 4974 | as opposed to its height. */ |
| 4975 | |
| 4976 | static int |
| 4977 | displayed_window_lines (struct window *w) |
| 4978 | { |
| 4979 | struct it it; |
| 4980 | struct text_pos start; |
| 4981 | int height = window_box_height (w); |
| 4982 | struct buffer *old_buffer; |
| 4983 | int bottom_y; |
| 4984 | void *itdata = NULL; |
| 4985 | |
| 4986 | if (XBUFFER (w->buffer) != current_buffer) |
| 4987 | { |
| 4988 | old_buffer = current_buffer; |
| 4989 | set_buffer_internal (XBUFFER (w->buffer)); |
| 4990 | } |
| 4991 | else |
| 4992 | old_buffer = NULL; |
| 4993 | |
| 4994 | /* In case W->start is out of the accessible range, do something |
| 4995 | reasonable. This happens in Info mode when Info-scroll-down |
| 4996 | calls (recenter -1) while W->start is 1. */ |
| 4997 | if (XMARKER (w->start)->charpos < BEGV) |
| 4998 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); |
| 4999 | else if (XMARKER (w->start)->charpos > ZV) |
| 5000 | SET_TEXT_POS (start, ZV, ZV_BYTE); |
| 5001 | else |
| 5002 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
| 5003 | |
| 5004 | itdata = bidi_shelve_cache (); |
| 5005 | start_display (&it, w, start); |
| 5006 | move_it_vertically (&it, height); |
| 5007 | bottom_y = line_bottom_y (&it); |
| 5008 | bidi_unshelve_cache (itdata, 0); |
| 5009 | |
| 5010 | /* rms: On a non-window display, |
| 5011 | the value of it.vpos at the bottom of the screen |
| 5012 | seems to be 1 larger than window_box_height (w). |
| 5013 | This kludge fixes a bug whereby (move-to-window-line -1) |
| 5014 | when ZV is on the last screen line |
| 5015 | moves to the previous screen line instead of the last one. */ |
| 5016 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) |
| 5017 | height++; |
| 5018 | |
| 5019 | /* Add in empty lines at the bottom of the window. */ |
| 5020 | if (bottom_y < height) |
| 5021 | { |
| 5022 | int uy = FRAME_LINE_HEIGHT (it.f); |
| 5023 | it.vpos += (height - bottom_y + uy - 1) / uy; |
| 5024 | } |
| 5025 | |
| 5026 | if (old_buffer) |
| 5027 | set_buffer_internal (old_buffer); |
| 5028 | |
| 5029 | return it.vpos; |
| 5030 | } |
| 5031 | |
| 5032 | |
| 5033 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
| 5034 | doc: /* Center point in selected window and maybe redisplay frame. |
| 5035 | With prefix argument ARG, recenter putting point on screen line ARG |
| 5036 | relative to the selected window. If ARG is negative, it counts up from the |
| 5037 | bottom of the window. (ARG should be less than the height of the window.) |
| 5038 | |
| 5039 | If ARG is omitted or nil, then recenter with point on the middle line of |
| 5040 | the selected window; if the variable `recenter-redisplay' is non-nil, |
| 5041 | also erase the entire frame and redraw it (when `auto-resize-tool-bars' |
| 5042 | is set to `grow-only', this resets the tool-bar's height to the minimum |
| 5043 | height needed); if `recenter-redisplay' has the special value `tty', |
| 5044 | then only tty frame are redrawn. |
| 5045 | |
| 5046 | Just C-u as prefix means put point in the center of the window |
| 5047 | and redisplay normally--don't erase and redraw the frame. */) |
| 5048 | (register Lisp_Object arg) |
| 5049 | { |
| 5050 | struct window *w = XWINDOW (selected_window); |
| 5051 | struct buffer *buf = XBUFFER (w->buffer); |
| 5052 | struct buffer *obuf = current_buffer; |
| 5053 | int center_p = 0; |
| 5054 | EMACS_INT charpos, bytepos; |
| 5055 | EMACS_INT iarg IF_LINT (= 0); |
| 5056 | int this_scroll_margin; |
| 5057 | |
| 5058 | /* If redisplay is suppressed due to an error, try again. */ |
| 5059 | obuf->display_error_modiff = 0; |
| 5060 | |
| 5061 | if (NILP (arg)) |
| 5062 | { |
| 5063 | if (!NILP (Vrecenter_redisplay) |
| 5064 | && (!EQ (Vrecenter_redisplay, Qtty) |
| 5065 | || !NILP (Ftty_type (selected_frame)))) |
| 5066 | { |
| 5067 | ptrdiff_t i; |
| 5068 | |
| 5069 | /* Invalidate pixel data calculated for all compositions. */ |
| 5070 | for (i = 0; i < n_compositions; i++) |
| 5071 | composition_table[i]->font = NULL; |
| 5072 | |
| 5073 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
| 5074 | |
| 5075 | Fredraw_frame (WINDOW_FRAME (w)); |
| 5076 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); |
| 5077 | } |
| 5078 | |
| 5079 | center_p = 1; |
| 5080 | } |
| 5081 | else if (CONSP (arg)) /* Just C-u. */ |
| 5082 | center_p = 1; |
| 5083 | else |
| 5084 | { |
| 5085 | arg = Fprefix_numeric_value (arg); |
| 5086 | CHECK_NUMBER (arg); |
| 5087 | iarg = XINT (arg); |
| 5088 | } |
| 5089 | |
| 5090 | set_buffer_internal (buf); |
| 5091 | |
| 5092 | /* Do this after making BUF current |
| 5093 | in case scroll_margin is buffer-local. */ |
| 5094 | this_scroll_margin = |
| 5095 | max (0, min (scroll_margin, XFASTINT (w->total_lines) / 4)); |
| 5096 | |
| 5097 | /* Handle centering on a graphical frame specially. Such frames can |
| 5098 | have variable-height lines and centering point on the basis of |
| 5099 | line counts would lead to strange effects. */ |
| 5100 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
| 5101 | { |
| 5102 | if (center_p) |
| 5103 | { |
| 5104 | struct it it; |
| 5105 | struct text_pos pt; |
| 5106 | void *itdata = bidi_shelve_cache (); |
| 5107 | |
| 5108 | SET_TEXT_POS (pt, PT, PT_BYTE); |
| 5109 | start_display (&it, w, pt); |
| 5110 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
| 5111 | charpos = IT_CHARPOS (it); |
| 5112 | bytepos = IT_BYTEPOS (it); |
| 5113 | bidi_unshelve_cache (itdata, 0); |
| 5114 | } |
| 5115 | else if (iarg < 0) |
| 5116 | { |
| 5117 | struct it it; |
| 5118 | struct text_pos pt; |
| 5119 | int nlines = min (INT_MAX, -iarg); |
| 5120 | int extra_line_spacing; |
| 5121 | int h = window_box_height (w); |
| 5122 | void *itdata = bidi_shelve_cache (); |
| 5123 | |
| 5124 | iarg = - max (-iarg, this_scroll_margin); |
| 5125 | |
| 5126 | SET_TEXT_POS (pt, PT, PT_BYTE); |
| 5127 | start_display (&it, w, pt); |
| 5128 | |
| 5129 | /* Be sure we have the exact height of the full line containing PT. */ |
| 5130 | move_it_by_lines (&it, 0); |
| 5131 | |
| 5132 | /* The amount of pixels we have to move back is the window |
| 5133 | height minus what's displayed in the line containing PT, |
| 5134 | and the lines below. */ |
| 5135 | it.current_y = 0; |
| 5136 | it.vpos = 0; |
| 5137 | move_it_by_lines (&it, nlines); |
| 5138 | |
| 5139 | if (it.vpos == nlines) |
| 5140 | h -= it.current_y; |
| 5141 | else |
| 5142 | { |
| 5143 | /* Last line has no newline */ |
| 5144 | h -= line_bottom_y (&it); |
| 5145 | it.vpos++; |
| 5146 | } |
| 5147 | |
| 5148 | /* Don't reserve space for extra line spacing of last line. */ |
| 5149 | extra_line_spacing = it.max_extra_line_spacing; |
| 5150 | |
| 5151 | /* If we can't move down NLINES lines because we hit |
| 5152 | the end of the buffer, count in some empty lines. */ |
| 5153 | if (it.vpos < nlines) |
| 5154 | { |
| 5155 | nlines -= it.vpos; |
| 5156 | extra_line_spacing = it.extra_line_spacing; |
| 5157 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); |
| 5158 | } |
| 5159 | if (h <= 0) |
| 5160 | { |
| 5161 | bidi_unshelve_cache (itdata, 0); |
| 5162 | return Qnil; |
| 5163 | } |
| 5164 | |
| 5165 | /* Now find the new top line (starting position) of the window. */ |
| 5166 | start_display (&it, w, pt); |
| 5167 | it.current_y = 0; |
| 5168 | move_it_vertically_backward (&it, h); |
| 5169 | |
| 5170 | /* If extra line spacing is present, we may move too far |
| 5171 | back. This causes the last line to be only partially |
| 5172 | visible (which triggers redisplay to recenter that line |
| 5173 | in the middle), so move forward. |
| 5174 | But ignore extra line spacing on last line, as it is not |
| 5175 | considered to be part of the visible height of the line. |
| 5176 | */ |
| 5177 | h += extra_line_spacing; |
| 5178 | while (-it.current_y > h) |
| 5179 | move_it_by_lines (&it, 1); |
| 5180 | |
| 5181 | charpos = IT_CHARPOS (it); |
| 5182 | bytepos = IT_BYTEPOS (it); |
| 5183 | |
| 5184 | bidi_unshelve_cache (itdata, 0); |
| 5185 | } |
| 5186 | else |
| 5187 | { |
| 5188 | struct position pos; |
| 5189 | |
| 5190 | iarg = max (iarg, this_scroll_margin); |
| 5191 | |
| 5192 | pos = *vmotion (PT, -iarg, w); |
| 5193 | charpos = pos.bufpos; |
| 5194 | bytepos = pos.bytepos; |
| 5195 | } |
| 5196 | } |
| 5197 | else |
| 5198 | { |
| 5199 | struct position pos; |
| 5200 | int ht = window_internal_height (w); |
| 5201 | |
| 5202 | if (center_p) |
| 5203 | iarg = ht / 2; |
| 5204 | else if (iarg < 0) |
| 5205 | iarg += ht; |
| 5206 | |
| 5207 | /* Don't let it get into the margin at either top or bottom. */ |
| 5208 | iarg = max (iarg, this_scroll_margin); |
| 5209 | iarg = min (iarg, ht - this_scroll_margin - 1); |
| 5210 | |
| 5211 | pos = *vmotion (PT, - iarg, w); |
| 5212 | charpos = pos.bufpos; |
| 5213 | bytepos = pos.bytepos; |
| 5214 | } |
| 5215 | |
| 5216 | /* Set the new window start. */ |
| 5217 | set_marker_both (w->start, w->buffer, charpos, bytepos); |
| 5218 | w->window_end_valid = Qnil; |
| 5219 | |
| 5220 | w->optional_new_start = Qt; |
| 5221 | |
| 5222 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
| 5223 | w->start_at_line_beg = Qt; |
| 5224 | else |
| 5225 | w->start_at_line_beg = Qnil; |
| 5226 | |
| 5227 | set_buffer_internal (obuf); |
| 5228 | return Qnil; |
| 5229 | } |
| 5230 | |
| 5231 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
| 5232 | 0, 1, 0, |
| 5233 | doc: /* Return the height in lines of the text display area of WINDOW. |
| 5234 | WINDOW defaults to the selected window. |
| 5235 | |
| 5236 | The return value does not include the mode line, any header line, nor |
| 5237 | any partial-height lines in the text display area. */) |
| 5238 | (Lisp_Object window) |
| 5239 | { |
| 5240 | struct window *w = decode_window (window); |
| 5241 | int pixel_height = window_box_height (w); |
| 5242 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
| 5243 | return make_number (line_height); |
| 5244 | } |
| 5245 | |
| 5246 | |
| 5247 | \f |
| 5248 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, |
| 5249 | 1, 1, "P", |
| 5250 | doc: /* Position point relative to window. |
| 5251 | With no argument, position point at center of window. |
| 5252 | An argument specifies vertical position within the window; |
| 5253 | zero means top of window, negative means relative to bottom of window. */) |
| 5254 | (Lisp_Object arg) |
| 5255 | { |
| 5256 | struct window *w = XWINDOW (selected_window); |
| 5257 | int lines, start; |
| 5258 | Lisp_Object window; |
| 5259 | #if 0 |
| 5260 | int this_scroll_margin; |
| 5261 | #endif |
| 5262 | |
| 5263 | if (!(BUFFERP (w->buffer) |
| 5264 | && XBUFFER (w->buffer) == current_buffer)) |
| 5265 | /* This test is needed to make sure PT/PT_BYTE make sense in w->buffer |
| 5266 | when passed below to set_marker_both. */ |
| 5267 | error ("move-to-window-line called from unrelated buffer"); |
| 5268 | |
| 5269 | window = selected_window; |
| 5270 | start = marker_position (w->start); |
| 5271 | if (start < BEGV || start > ZV) |
| 5272 | { |
| 5273 | int height = window_internal_height (w); |
| 5274 | Fvertical_motion (make_number (- (height / 2)), window); |
| 5275 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
| 5276 | w->start_at_line_beg = Fbolp (); |
| 5277 | w->force_start = Qt; |
| 5278 | } |
| 5279 | else |
| 5280 | Fgoto_char (w->start); |
| 5281 | |
| 5282 | lines = displayed_window_lines (w); |
| 5283 | |
| 5284 | #if 0 |
| 5285 | this_scroll_margin = max (0, min (scroll_margin, lines / 4)); |
| 5286 | #endif |
| 5287 | |
| 5288 | if (NILP (arg)) |
| 5289 | XSETFASTINT (arg, lines / 2); |
| 5290 | else |
| 5291 | { |
| 5292 | EMACS_INT iarg = XINT (Fprefix_numeric_value (arg)); |
| 5293 | |
| 5294 | if (iarg < 0) |
| 5295 | iarg = iarg + lines; |
| 5296 | |
| 5297 | #if 0 /* This code would prevent move-to-window-line from moving point |
| 5298 | to a place inside the scroll margins (which would cause the |
| 5299 | next redisplay to scroll). I wrote this code, but then concluded |
| 5300 | it is probably better not to install it. However, it is here |
| 5301 | inside #if 0 so as not to lose it. -- rms. */ |
| 5302 | |
| 5303 | /* Don't let it get into the margin at either top or bottom. */ |
| 5304 | iarg = max (iarg, this_scroll_margin); |
| 5305 | iarg = min (iarg, lines - this_scroll_margin - 1); |
| 5306 | #endif |
| 5307 | |
| 5308 | arg = make_number (iarg); |
| 5309 | } |
| 5310 | |
| 5311 | /* Skip past a partially visible first line. */ |
| 5312 | if (w->vscroll) |
| 5313 | XSETINT (arg, XINT (arg) + 1); |
| 5314 | |
| 5315 | return Fvertical_motion (arg, window); |
| 5316 | } |
| 5317 | |
| 5318 | |
| 5319 | \f |
| 5320 | /*********************************************************************** |
| 5321 | Window Configuration |
| 5322 | ***********************************************************************/ |
| 5323 | |
| 5324 | struct save_window_data |
| 5325 | { |
| 5326 | struct vectorlike_header header; |
| 5327 | Lisp_Object selected_frame; |
| 5328 | Lisp_Object current_window; |
| 5329 | Lisp_Object current_buffer; |
| 5330 | Lisp_Object minibuf_scroll_window; |
| 5331 | Lisp_Object minibuf_selected_window; |
| 5332 | Lisp_Object root_window; |
| 5333 | Lisp_Object focus_frame; |
| 5334 | /* A vector, each of whose elements is a struct saved_window |
| 5335 | for one window. */ |
| 5336 | Lisp_Object saved_windows; |
| 5337 | |
| 5338 | /* All fields above are traced by the GC. |
| 5339 | From `fame-cols' down, the fields are ignored by the GC. */ |
| 5340 | |
| 5341 | int frame_cols, frame_lines, frame_menu_bar_lines; |
| 5342 | int frame_tool_bar_lines; |
| 5343 | }; |
| 5344 | |
| 5345 | /* This is saved as a Lisp_Vector */ |
| 5346 | struct saved_window |
| 5347 | { |
| 5348 | struct vectorlike_header header; |
| 5349 | |
| 5350 | Lisp_Object window, buffer, start, pointm, mark; |
| 5351 | Lisp_Object left_col, top_line, total_cols, total_lines; |
| 5352 | Lisp_Object normal_cols, normal_lines; |
| 5353 | Lisp_Object hscroll, min_hscroll; |
| 5354 | Lisp_Object parent, prev; |
| 5355 | Lisp_Object start_at_line_beg; |
| 5356 | Lisp_Object display_table; |
| 5357 | Lisp_Object left_margin_cols, right_margin_cols; |
| 5358 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; |
| 5359 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type, dedicated; |
| 5360 | Lisp_Object splits, nest, window_parameters; |
| 5361 | }; |
| 5362 | |
| 5363 | #define SAVED_WINDOW_N(swv,n) \ |
| 5364 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) |
| 5365 | |
| 5366 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, |
| 5367 | doc: /* Return t if OBJECT is a window-configuration object. */) |
| 5368 | (Lisp_Object object) |
| 5369 | { |
| 5370 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
| 5371 | } |
| 5372 | |
| 5373 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
| 5374 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
| 5375 | (Lisp_Object config) |
| 5376 | { |
| 5377 | register struct save_window_data *data; |
| 5378 | struct Lisp_Vector *saved_windows; |
| 5379 | |
| 5380 | CHECK_WINDOW_CONFIGURATION (config); |
| 5381 | |
| 5382 | data = (struct save_window_data *) XVECTOR (config); |
| 5383 | saved_windows = XVECTOR (data->saved_windows); |
| 5384 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
| 5385 | } |
| 5386 | |
| 5387 | DEFUN ("set-window-configuration", Fset_window_configuration, |
| 5388 | Sset_window_configuration, 1, 1, 0, |
| 5389 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. |
| 5390 | CONFIGURATION must be a value previously returned |
| 5391 | by `current-window-configuration' (which see). |
| 5392 | If CONFIGURATION was made from a frame that is now deleted, |
| 5393 | only frame-independent values can be restored. In this case, |
| 5394 | the return value is nil. Otherwise the value is t. */) |
| 5395 | (Lisp_Object configuration) |
| 5396 | { |
| 5397 | register struct save_window_data *data; |
| 5398 | struct Lisp_Vector *saved_windows; |
| 5399 | Lisp_Object new_current_buffer; |
| 5400 | Lisp_Object frame; |
| 5401 | Lisp_Object auto_buffer_name; |
| 5402 | FRAME_PTR f; |
| 5403 | EMACS_INT old_point = -1; |
| 5404 | |
| 5405 | CHECK_WINDOW_CONFIGURATION (configuration); |
| 5406 | |
| 5407 | data = (struct save_window_data *) XVECTOR (configuration); |
| 5408 | saved_windows = XVECTOR (data->saved_windows); |
| 5409 | |
| 5410 | new_current_buffer = data->current_buffer; |
| 5411 | if (NILP (BVAR (XBUFFER (new_current_buffer), name))) |
| 5412 | new_current_buffer = Qnil; |
| 5413 | else |
| 5414 | { |
| 5415 | if (XBUFFER (new_current_buffer) == current_buffer) |
| 5416 | /* The code further down "preserves point" by saving here PT in |
| 5417 | old_point and then setting it later back into PT. When the |
| 5418 | current-selected-window and the final-selected-window both show |
| 5419 | the current buffer, this suffers from the problem that the |
| 5420 | current PT is the window-point of the current-selected-window, |
| 5421 | while the final PT is the point of the final-selected-window, so |
| 5422 | this copy from one PT to the other would end up moving the |
| 5423 | window-point of the final-selected-window to the window-point of |
| 5424 | the current-selected-window. So we have to be careful which |
| 5425 | point of the current-buffer we copy into old_point. */ |
| 5426 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) |
| 5427 | && WINDOWP (selected_window) |
| 5428 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) |
| 5429 | && !EQ (selected_window, data->current_window)) |
| 5430 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; |
| 5431 | else |
| 5432 | old_point = PT; |
| 5433 | else |
| 5434 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
| 5435 | point in new_current_buffer as of the last time this buffer was |
| 5436 | used. This can be non-deterministic since it can be changed by |
| 5437 | things like jit-lock by mere temporary selection of some random |
| 5438 | window that happens to show this buffer. |
| 5439 | So if possible we want this arbitrary choice of "which point" to |
| 5440 | be the one from the to-be-selected-window so as to prevent this |
| 5441 | window's cursor from being copied from another window. */ |
| 5442 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) |
| 5443 | /* If current_window = selected_window, its point is in BUF_PT. */ |
| 5444 | && !EQ (selected_window, data->current_window)) |
| 5445 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; |
| 5446 | else |
| 5447 | old_point = BUF_PT (XBUFFER (new_current_buffer)); |
| 5448 | } |
| 5449 | |
| 5450 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
| 5451 | f = XFRAME (frame); |
| 5452 | |
| 5453 | /* If f is a dead frame, don't bother rebuilding its window tree. |
| 5454 | However, there is other stuff we should still try to do below. */ |
| 5455 | if (FRAME_LIVE_P (f)) |
| 5456 | { |
| 5457 | Lisp_Object window; |
| 5458 | Lisp_Object dead_windows = Qnil; |
| 5459 | register struct window *w; |
| 5460 | register struct saved_window *p; |
| 5461 | struct window *root_window; |
| 5462 | struct window **leaf_windows; |
| 5463 | int n_leaf_windows; |
| 5464 | ptrdiff_t k; |
| 5465 | int i, n; |
| 5466 | |
| 5467 | /* If the frame has been resized since this window configuration was |
| 5468 | made, we change the frame to the size specified in the |
| 5469 | configuration, restore the configuration, and then resize it |
| 5470 | back. We keep track of the prevailing height in these variables. */ |
| 5471 | int previous_frame_lines = FRAME_LINES (f); |
| 5472 | int previous_frame_cols = FRAME_COLS (f); |
| 5473 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
| 5474 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
| 5475 | |
| 5476 | /* The mouse highlighting code could get screwed up |
| 5477 | if it runs during this. */ |
| 5478 | BLOCK_INPUT; |
| 5479 | |
| 5480 | if (data->frame_lines != previous_frame_lines |
| 5481 | || data->frame_cols != previous_frame_cols) |
| 5482 | change_frame_size (f, data->frame_lines, |
| 5483 | data->frame_cols, 0, 0, 0); |
| 5484 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
| 5485 | if (data->frame_menu_bar_lines |
| 5486 | != previous_frame_menu_bar_lines) |
| 5487 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
| 5488 | make_number (0)); |
| 5489 | #ifdef HAVE_WINDOW_SYSTEM |
| 5490 | if (data->frame_tool_bar_lines |
| 5491 | != previous_frame_tool_bar_lines) |
| 5492 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
| 5493 | make_number (0)); |
| 5494 | #endif |
| 5495 | #endif |
| 5496 | |
| 5497 | /* "Swap out" point from the selected window's buffer |
| 5498 | into the window itself. (Normally the pointm of the selected |
| 5499 | window holds garbage.) We do this now, before |
| 5500 | restoring the window contents, and prevent it from |
| 5501 | being done later on when we select a new window. */ |
| 5502 | if (! NILP (XWINDOW (selected_window)->buffer)) |
| 5503 | { |
| 5504 | w = XWINDOW (selected_window); |
| 5505 | set_marker_both (w->pointm, |
| 5506 | w->buffer, |
| 5507 | BUF_PT (XBUFFER (w->buffer)), |
| 5508 | BUF_PT_BYTE (XBUFFER (w->buffer))); |
| 5509 | } |
| 5510 | |
| 5511 | windows_or_buffers_changed++; |
| 5512 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
| 5513 | |
| 5514 | /* Problem: Freeing all matrices and later allocating them again |
| 5515 | is a serious redisplay flickering problem. What we would |
| 5516 | really like to do is to free only those matrices not reused |
| 5517 | below. */ |
| 5518 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
| 5519 | leaf_windows |
| 5520 | = (struct window **) alloca (count_windows (root_window) |
| 5521 | * sizeof (struct window *)); |
| 5522 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); |
| 5523 | |
| 5524 | /* Kludge Alert! |
| 5525 | Mark all windows now on frame as "deleted". |
| 5526 | Restoring the new configuration "undeletes" any that are in it. |
| 5527 | |
| 5528 | Save their current buffers in their height fields, since we may |
| 5529 | need it later, if a buffer saved in the configuration is now |
| 5530 | dead. */ |
| 5531 | delete_all_subwindows (FRAME_ROOT_WINDOW (f)); |
| 5532 | |
| 5533 | for (k = 0; k < saved_windows->header.size; k++) |
| 5534 | { |
| 5535 | p = SAVED_WINDOW_N (saved_windows, k); |
| 5536 | window = p->window; |
| 5537 | w = XWINDOW (window); |
| 5538 | w->next = Qnil; |
| 5539 | |
| 5540 | if (!NILP (p->parent)) |
| 5541 | w->parent = SAVED_WINDOW_N (saved_windows, |
| 5542 | XFASTINT (p->parent))->window; |
| 5543 | else |
| 5544 | w->parent = Qnil; |
| 5545 | |
| 5546 | if (!NILP (p->prev)) |
| 5547 | { |
| 5548 | w->prev = SAVED_WINDOW_N (saved_windows, |
| 5549 | XFASTINT (p->prev))->window; |
| 5550 | XWINDOW (w->prev)->next = p->window; |
| 5551 | } |
| 5552 | else |
| 5553 | { |
| 5554 | w->prev = Qnil; |
| 5555 | if (!NILP (w->parent)) |
| 5556 | { |
| 5557 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
| 5558 | { |
| 5559 | XWINDOW (w->parent)->vchild = p->window; |
| 5560 | XWINDOW (w->parent)->hchild = Qnil; |
| 5561 | } |
| 5562 | else |
| 5563 | { |
| 5564 | XWINDOW (w->parent)->hchild = p->window; |
| 5565 | XWINDOW (w->parent)->vchild = Qnil; |
| 5566 | } |
| 5567 | } |
| 5568 | } |
| 5569 | |
| 5570 | /* If we squirreled away the buffer in the window's height, |
| 5571 | restore it now. */ |
| 5572 | if (BUFFERP (w->total_lines)) |
| 5573 | w->buffer = w->total_lines; |
| 5574 | w->left_col = p->left_col; |
| 5575 | w->top_line = p->top_line; |
| 5576 | w->total_cols = p->total_cols; |
| 5577 | w->total_lines = p->total_lines; |
| 5578 | w->normal_cols = p->normal_cols; |
| 5579 | w->normal_lines = p->normal_lines; |
| 5580 | w->hscroll = p->hscroll; |
| 5581 | w->min_hscroll = p->min_hscroll; |
| 5582 | w->display_table = p->display_table; |
| 5583 | w->left_margin_cols = p->left_margin_cols; |
| 5584 | w->right_margin_cols = p->right_margin_cols; |
| 5585 | w->left_fringe_width = p->left_fringe_width; |
| 5586 | w->right_fringe_width = p->right_fringe_width; |
| 5587 | w->fringes_outside_margins = p->fringes_outside_margins; |
| 5588 | w->scroll_bar_width = p->scroll_bar_width; |
| 5589 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; |
| 5590 | w->dedicated = p->dedicated; |
| 5591 | w->splits = p->splits; |
| 5592 | w->nest = p->nest; |
| 5593 | w->window_parameters = p->window_parameters; |
| 5594 | XSETFASTINT (w->last_modified, 0); |
| 5595 | XSETFASTINT (w->last_overlay_modified, 0); |
| 5596 | |
| 5597 | /* Reinstall the saved buffer and pointers into it. */ |
| 5598 | if (NILP (p->buffer)) |
| 5599 | /* An internal window. */ |
| 5600 | w->buffer = p->buffer; |
| 5601 | else if (!NILP (BVAR (XBUFFER (p->buffer), name))) |
| 5602 | /* If saved buffer is alive, install it. */ |
| 5603 | { |
| 5604 | w->buffer = p->buffer; |
| 5605 | w->start_at_line_beg = p->start_at_line_beg; |
| 5606 | set_marker_restricted (w->start, p->start, w->buffer); |
| 5607 | set_marker_restricted (w->pointm, p->pointm, w->buffer); |
| 5608 | Fset_marker (BVAR (XBUFFER (w->buffer), mark), |
| 5609 | p->mark, w->buffer); |
| 5610 | |
| 5611 | /* As documented in Fcurrent_window_configuration, don't |
| 5612 | restore the location of point in the buffer which was |
| 5613 | current when the window configuration was recorded. */ |
| 5614 | if (!EQ (p->buffer, new_current_buffer) |
| 5615 | && XBUFFER (p->buffer) == current_buffer) |
| 5616 | Fgoto_char (w->pointm); |
| 5617 | } |
| 5618 | else if (!NILP (w->buffer) && !NILP (BVAR (XBUFFER (w->buffer), name))) |
| 5619 | /* Keep window's old buffer; make sure the markers are |
| 5620 | real. */ |
| 5621 | { |
| 5622 | /* Set window markers at start of visible range. */ |
| 5623 | if (XMARKER (w->start)->buffer == 0) |
| 5624 | set_marker_restricted (w->start, make_number (0), |
| 5625 | w->buffer); |
| 5626 | if (XMARKER (w->pointm)->buffer == 0) |
| 5627 | set_marker_restricted_both (w->pointm, w->buffer, |
| 5628 | BUF_PT (XBUFFER (w->buffer)), |
| 5629 | BUF_PT_BYTE (XBUFFER (w->buffer))); |
| 5630 | w->start_at_line_beg = Qt; |
| 5631 | } |
| 5632 | else if (STRINGP (auto_buffer_name = |
| 5633 | Fwindow_parameter (window, Qauto_buffer_name)) |
| 5634 | && SCHARS (auto_buffer_name) != 0 |
| 5635 | && !NILP (w->buffer = Fget_buffer_create (auto_buffer_name))) |
| 5636 | { |
| 5637 | set_marker_restricted (w->start, make_number (0), w->buffer); |
| 5638 | set_marker_restricted (w->pointm, make_number (0), w->buffer); |
| 5639 | w->start_at_line_beg = Qt; |
| 5640 | } |
| 5641 | else |
| 5642 | /* Window has no live buffer, get one. */ |
| 5643 | { |
| 5644 | /* Get the buffer via other_buffer_safely in order to |
| 5645 | avoid showing an unimportant buffer and, if necessary, to |
| 5646 | recreate *scratch* in the course (part of Juanma's bs-show |
| 5647 | scenario from March 2011). */ |
| 5648 | w->buffer = other_buffer_safely (Fcurrent_buffer ()); |
| 5649 | /* This will set the markers to beginning of visible |
| 5650 | range. */ |
| 5651 | set_marker_restricted (w->start, make_number (0), w->buffer); |
| 5652 | set_marker_restricted (w->pointm, make_number (0), w->buffer); |
| 5653 | w->start_at_line_beg = Qt; |
| 5654 | if (!NILP (w->dedicated)) |
| 5655 | /* Record this window as dead. */ |
| 5656 | dead_windows = Fcons (window, dead_windows); |
| 5657 | /* Make sure window is no more dedicated. */ |
| 5658 | w->dedicated = Qnil; |
| 5659 | } |
| 5660 | } |
| 5661 | |
| 5662 | FRAME_ROOT_WINDOW (f) = data->root_window; |
| 5663 | /* Arrange *not* to restore point in the buffer that was |
| 5664 | current when the window configuration was saved. */ |
| 5665 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
| 5666 | set_marker_restricted (XWINDOW (data->current_window)->pointm, |
| 5667 | make_number (old_point), |
| 5668 | XWINDOW (data->current_window)->buffer); |
| 5669 | |
| 5670 | /* In the following call to `select-window', prevent "swapping out |
| 5671 | point" in the old selected window using the buffer that has |
| 5672 | been restored into it. We already swapped out that point from |
| 5673 | that window's old buffer. */ |
| 5674 | select_window (data->current_window, Qnil, 1); |
| 5675 | BVAR (XBUFFER (XWINDOW (selected_window)->buffer), last_selected_window) |
| 5676 | = selected_window; |
| 5677 | |
| 5678 | if (NILP (data->focus_frame) |
| 5679 | || (FRAMEP (data->focus_frame) |
| 5680 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
| 5681 | Fredirect_frame_focus (frame, data->focus_frame); |
| 5682 | |
| 5683 | /* Set the screen height to the value it had before this function. */ |
| 5684 | if (previous_frame_lines != FRAME_LINES (f) |
| 5685 | || previous_frame_cols != FRAME_COLS (f)) |
| 5686 | change_frame_size (f, previous_frame_lines, previous_frame_cols, |
| 5687 | 0, 0, 0); |
| 5688 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
| 5689 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
| 5690 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
| 5691 | make_number (0)); |
| 5692 | #ifdef HAVE_WINDOW_SYSTEM |
| 5693 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
| 5694 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), |
| 5695 | make_number (0)); |
| 5696 | #endif |
| 5697 | #endif |
| 5698 | |
| 5699 | /* Now, free glyph matrices in windows that were not reused. */ |
| 5700 | for (i = n = 0; i < n_leaf_windows; ++i) |
| 5701 | { |
| 5702 | if (NILP (leaf_windows[i]->buffer)) |
| 5703 | { |
| 5704 | /* Assert it's not reused as a combination. */ |
| 5705 | xassert (NILP (leaf_windows[i]->hchild) |
| 5706 | && NILP (leaf_windows[i]->vchild)); |
| 5707 | free_window_matrices (leaf_windows[i]); |
| 5708 | } |
| 5709 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) |
| 5710 | ++n; |
| 5711 | } |
| 5712 | |
| 5713 | adjust_glyphs (f); |
| 5714 | UNBLOCK_INPUT; |
| 5715 | |
| 5716 | /* Scan dead buffer windows. */ |
| 5717 | for (; CONSP (dead_windows); dead_windows = XCDR (dead_windows)) |
| 5718 | { |
| 5719 | window = XCAR (dead_windows); |
| 5720 | if (WINDOW_LIVE_P (window) && !EQ (window, FRAME_ROOT_WINDOW (f))) |
| 5721 | delete_deletable_window (window); |
| 5722 | } |
| 5723 | |
| 5724 | /* Fselect_window will have made f the selected frame, so we |
| 5725 | reselect the proper frame here. Fhandle_switch_frame will change the |
| 5726 | selected window too, but that doesn't make the call to |
| 5727 | Fselect_window above totally superfluous; it still sets f's |
| 5728 | selected window. */ |
| 5729 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) |
| 5730 | do_switch_frame (data->selected_frame, 0, 0, Qnil); |
| 5731 | |
| 5732 | run_window_configuration_change_hook (f); |
| 5733 | } |
| 5734 | |
| 5735 | if (!NILP (new_current_buffer)) |
| 5736 | Fset_buffer (new_current_buffer); |
| 5737 | |
| 5738 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
| 5739 | minibuf_selected_window = data->minibuf_selected_window; |
| 5740 | |
| 5741 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
| 5742 | } |
| 5743 | |
| 5744 | |
| 5745 | /* Delete all subwindows reachable via the next, vchild, and hchild |
| 5746 | slots of WINDOW. */ |
| 5747 | void |
| 5748 | delete_all_subwindows (Lisp_Object window) |
| 5749 | { |
| 5750 | register struct window *w; |
| 5751 | |
| 5752 | w = XWINDOW (window); |
| 5753 | |
| 5754 | if (!NILP (w->next)) |
| 5755 | /* Delete WINDOW's siblings (we traverse postorderly). */ |
| 5756 | delete_all_subwindows (w->next); |
| 5757 | |
| 5758 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
| 5759 | |
| 5760 | if (!NILP (w->vchild)) |
| 5761 | { |
| 5762 | delete_all_subwindows (w->vchild); |
| 5763 | w->vchild = Qnil; |
| 5764 | } |
| 5765 | else if (!NILP (w->hchild)) |
| 5766 | { |
| 5767 | delete_all_subwindows (w->hchild); |
| 5768 | w->hchild = Qnil; |
| 5769 | } |
| 5770 | else if (!NILP (w->buffer)) |
| 5771 | { |
| 5772 | unshow_buffer (w); |
| 5773 | unchain_marker (XMARKER (w->pointm)); |
| 5774 | unchain_marker (XMARKER (w->start)); |
| 5775 | w->buffer = Qnil; |
| 5776 | } |
| 5777 | |
| 5778 | Vwindow_list = Qnil; |
| 5779 | } |
| 5780 | \f |
| 5781 | static int |
| 5782 | count_windows (register struct window *window) |
| 5783 | { |
| 5784 | register int count = 1; |
| 5785 | if (!NILP (window->next)) |
| 5786 | count += count_windows (XWINDOW (window->next)); |
| 5787 | if (!NILP (window->vchild)) |
| 5788 | count += count_windows (XWINDOW (window->vchild)); |
| 5789 | if (!NILP (window->hchild)) |
| 5790 | count += count_windows (XWINDOW (window->hchild)); |
| 5791 | return count; |
| 5792 | } |
| 5793 | |
| 5794 | |
| 5795 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
| 5796 | Value is last index + 1. */ |
| 5797 | static int |
| 5798 | get_leaf_windows (struct window *w, struct window **flat, int i) |
| 5799 | { |
| 5800 | while (w) |
| 5801 | { |
| 5802 | if (!NILP (w->hchild)) |
| 5803 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); |
| 5804 | else if (!NILP (w->vchild)) |
| 5805 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); |
| 5806 | else |
| 5807 | flat[i++] = w; |
| 5808 | |
| 5809 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
| 5810 | } |
| 5811 | |
| 5812 | return i; |
| 5813 | } |
| 5814 | |
| 5815 | |
| 5816 | /* Return a pointer to the glyph W's physical cursor is on. Value is |
| 5817 | null if W's current matrix is invalid, so that no meaningfull glyph |
| 5818 | can be returned. */ |
| 5819 | struct glyph * |
| 5820 | get_phys_cursor_glyph (struct window *w) |
| 5821 | { |
| 5822 | struct glyph_row *row; |
| 5823 | struct glyph *glyph; |
| 5824 | |
| 5825 | if (w->phys_cursor.vpos >= 0 |
| 5826 | && w->phys_cursor.vpos < w->current_matrix->nrows |
| 5827 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), |
| 5828 | row->enabled_p) |
| 5829 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) |
| 5830 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; |
| 5831 | else |
| 5832 | glyph = NULL; |
| 5833 | |
| 5834 | return glyph; |
| 5835 | } |
| 5836 | |
| 5837 | |
| 5838 | static int |
| 5839 | save_window_save (Lisp_Object window, struct Lisp_Vector *vector, int i) |
| 5840 | { |
| 5841 | register struct saved_window *p; |
| 5842 | register struct window *w; |
| 5843 | register Lisp_Object tem; |
| 5844 | |
| 5845 | for (;!NILP (window); window = w->next) |
| 5846 | { |
| 5847 | p = SAVED_WINDOW_N (vector, i); |
| 5848 | w = XWINDOW (window); |
| 5849 | |
| 5850 | XSETFASTINT (w->temslot, i); i++; |
| 5851 | p->window = window; |
| 5852 | p->buffer = w->buffer; |
| 5853 | p->left_col = w->left_col; |
| 5854 | p->top_line = w->top_line; |
| 5855 | p->total_cols = w->total_cols; |
| 5856 | p->total_lines = w->total_lines; |
| 5857 | p->normal_cols = w->normal_cols; |
| 5858 | p->normal_lines = w->normal_lines; |
| 5859 | p->hscroll = w->hscroll; |
| 5860 | p->min_hscroll = w->min_hscroll; |
| 5861 | p->display_table = w->display_table; |
| 5862 | p->left_margin_cols = w->left_margin_cols; |
| 5863 | p->right_margin_cols = w->right_margin_cols; |
| 5864 | p->left_fringe_width = w->left_fringe_width; |
| 5865 | p->right_fringe_width = w->right_fringe_width; |
| 5866 | p->fringes_outside_margins = w->fringes_outside_margins; |
| 5867 | p->scroll_bar_width = w->scroll_bar_width; |
| 5868 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; |
| 5869 | p->dedicated = w->dedicated; |
| 5870 | p->splits = w->splits; |
| 5871 | p->nest = w->nest; |
| 5872 | p->window_parameters = w->window_parameters; |
| 5873 | if (!NILP (w->buffer)) |
| 5874 | { |
| 5875 | /* Save w's value of point in the window configuration. |
| 5876 | If w is the selected window, then get the value of point |
| 5877 | from the buffer; pointm is garbage in the selected window. */ |
| 5878 | if (EQ (window, selected_window)) |
| 5879 | { |
| 5880 | p->pointm = Fmake_marker (); |
| 5881 | set_marker_both (p->pointm, w->buffer, |
| 5882 | BUF_PT (XBUFFER (w->buffer)), |
| 5883 | BUF_PT_BYTE (XBUFFER (w->buffer))); |
| 5884 | } |
| 5885 | else |
| 5886 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
| 5887 | |
| 5888 | p->start = Fcopy_marker (w->start, Qnil); |
| 5889 | p->start_at_line_beg = w->start_at_line_beg; |
| 5890 | |
| 5891 | tem = BVAR (XBUFFER (w->buffer), mark); |
| 5892 | p->mark = Fcopy_marker (tem, Qnil); |
| 5893 | } |
| 5894 | else |
| 5895 | { |
| 5896 | p->pointm = Qnil; |
| 5897 | p->start = Qnil; |
| 5898 | p->mark = Qnil; |
| 5899 | p->start_at_line_beg = Qnil; |
| 5900 | } |
| 5901 | |
| 5902 | if (NILP (w->parent)) |
| 5903 | p->parent = Qnil; |
| 5904 | else |
| 5905 | p->parent = XWINDOW (w->parent)->temslot; |
| 5906 | |
| 5907 | if (NILP (w->prev)) |
| 5908 | p->prev = Qnil; |
| 5909 | else |
| 5910 | p->prev = XWINDOW (w->prev)->temslot; |
| 5911 | |
| 5912 | if (!NILP (w->vchild)) |
| 5913 | i = save_window_save (w->vchild, vector, i); |
| 5914 | if (!NILP (w->hchild)) |
| 5915 | i = save_window_save (w->hchild, vector, i); |
| 5916 | } |
| 5917 | |
| 5918 | return i; |
| 5919 | } |
| 5920 | |
| 5921 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
| 5922 | Scurrent_window_configuration, 0, 1, 0, |
| 5923 | doc: /* Return an object representing the current window configuration of FRAME. |
| 5924 | If FRAME is nil or omitted, use the selected frame. |
| 5925 | This describes the number of windows, their sizes and current buffers, |
| 5926 | and for each displayed buffer, where display starts, and the positions of |
| 5927 | point and mark. An exception is made for point in the current buffer: |
| 5928 | its value is -not- saved. |
| 5929 | This also records the currently selected frame, and FRAME's focus |
| 5930 | redirection (see `redirect-frame-focus'). */) |
| 5931 | (Lisp_Object frame) |
| 5932 | { |
| 5933 | register Lisp_Object tem; |
| 5934 | register int n_windows; |
| 5935 | register struct save_window_data *data; |
| 5936 | register int i; |
| 5937 | FRAME_PTR f; |
| 5938 | |
| 5939 | if (NILP (frame)) |
| 5940 | frame = selected_frame; |
| 5941 | CHECK_LIVE_FRAME (frame); |
| 5942 | f = XFRAME (frame); |
| 5943 | |
| 5944 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
| 5945 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
| 5946 | PVEC_WINDOW_CONFIGURATION); |
| 5947 | |
| 5948 | data->frame_cols = FRAME_COLS (f); |
| 5949 | data->frame_lines = FRAME_LINES (f); |
| 5950 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
| 5951 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
| 5952 | data->selected_frame = selected_frame; |
| 5953 | data->current_window = FRAME_SELECTED_WINDOW (f); |
| 5954 | XSETBUFFER (data->current_buffer, current_buffer); |
| 5955 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
| 5956 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
| 5957 | data->root_window = FRAME_ROOT_WINDOW (f); |
| 5958 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
| 5959 | tem = Fmake_vector (make_number (n_windows), Qnil); |
| 5960 | data->saved_windows = tem; |
| 5961 | for (i = 0; i < n_windows; i++) |
| 5962 | XVECTOR (tem)->contents[i] |
| 5963 | = Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil); |
| 5964 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
| 5965 | XSETWINDOW_CONFIGURATION (tem, data); |
| 5966 | return (tem); |
| 5967 | } |
| 5968 | \f |
| 5969 | /*********************************************************************** |
| 5970 | Marginal Areas |
| 5971 | ***********************************************************************/ |
| 5972 | |
| 5973 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, |
| 5974 | 2, 3, 0, |
| 5975 | doc: /* Set width of marginal areas of window WINDOW. |
| 5976 | If WINDOW is nil, set margins of the currently selected window. |
| 5977 | Second arg LEFT-WIDTH specifies the number of character cells to |
| 5978 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH |
| 5979 | does the same for the right marginal area. A nil width parameter |
| 5980 | means no margin. */) |
| 5981 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width) |
| 5982 | { |
| 5983 | struct window *w = decode_window (window); |
| 5984 | |
| 5985 | /* Translate negative or zero widths to nil. |
| 5986 | Margins that are too wide have to be checked elsewhere. */ |
| 5987 | |
| 5988 | if (!NILP (left_width)) |
| 5989 | { |
| 5990 | CHECK_NUMBER (left_width); |
| 5991 | if (XINT (left_width) <= 0) |
| 5992 | left_width = Qnil; |
| 5993 | } |
| 5994 | |
| 5995 | if (!NILP (right_width)) |
| 5996 | { |
| 5997 | CHECK_NUMBER (right_width); |
| 5998 | if (XINT (right_width) <= 0) |
| 5999 | right_width = Qnil; |
| 6000 | } |
| 6001 | |
| 6002 | if (!EQ (w->left_margin_cols, left_width) |
| 6003 | || !EQ (w->right_margin_cols, right_width)) |
| 6004 | { |
| 6005 | w->left_margin_cols = left_width; |
| 6006 | w->right_margin_cols = right_width; |
| 6007 | |
| 6008 | adjust_window_margins (w); |
| 6009 | |
| 6010 | ++windows_or_buffers_changed; |
| 6011 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); |
| 6012 | } |
| 6013 | |
| 6014 | return Qnil; |
| 6015 | } |
| 6016 | |
| 6017 | |
| 6018 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, |
| 6019 | 0, 1, 0, |
| 6020 | doc: /* Get width of marginal areas of window WINDOW. |
| 6021 | If WINDOW is omitted or nil, use the currently selected window. |
| 6022 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). |
| 6023 | If a marginal area does not exist, its width will be returned |
| 6024 | as nil. */) |
| 6025 | (Lisp_Object window) |
| 6026 | { |
| 6027 | struct window *w = decode_window (window); |
| 6028 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
| 6029 | } |
| 6030 | |
| 6031 | |
| 6032 | \f |
| 6033 | /*********************************************************************** |
| 6034 | Fringes |
| 6035 | ***********************************************************************/ |
| 6036 | |
| 6037 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, |
| 6038 | 2, 4, 0, |
| 6039 | doc: /* Set the fringe widths of window WINDOW. |
| 6040 | If WINDOW is nil, set the fringe widths of the currently selected |
| 6041 | window. |
| 6042 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for |
| 6043 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right |
| 6044 | fringe width. If a fringe width arg is nil, that means to use the |
| 6045 | frame's default fringe width. Default fringe widths can be set with |
| 6046 | the command `set-fringe-style'. |
| 6047 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes |
| 6048 | outside of the display margins. By default, fringes are drawn between |
| 6049 | display marginal areas and the text area. */) |
| 6050 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width, Lisp_Object outside_margins) |
| 6051 | { |
| 6052 | struct window *w = decode_window (window); |
| 6053 | |
| 6054 | if (!NILP (left_width)) |
| 6055 | CHECK_NATNUM (left_width); |
| 6056 | if (!NILP (right_width)) |
| 6057 | CHECK_NATNUM (right_width); |
| 6058 | |
| 6059 | /* Do nothing on a tty. */ |
| 6060 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
| 6061 | && (!EQ (w->left_fringe_width, left_width) |
| 6062 | || !EQ (w->right_fringe_width, right_width) |
| 6063 | || !EQ (w->fringes_outside_margins, outside_margins))) |
| 6064 | { |
| 6065 | w->left_fringe_width = left_width; |
| 6066 | w->right_fringe_width = right_width; |
| 6067 | w->fringes_outside_margins = outside_margins; |
| 6068 | |
| 6069 | adjust_window_margins (w); |
| 6070 | |
| 6071 | clear_glyph_matrix (w->current_matrix); |
| 6072 | w->window_end_valid = Qnil; |
| 6073 | |
| 6074 | ++windows_or_buffers_changed; |
| 6075 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); |
| 6076 | } |
| 6077 | |
| 6078 | return Qnil; |
| 6079 | } |
| 6080 | |
| 6081 | |
| 6082 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, |
| 6083 | 0, 1, 0, |
| 6084 | doc: /* Get width of fringes of window WINDOW. |
| 6085 | If WINDOW is omitted or nil, use the currently selected window. |
| 6086 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
| 6087 | (Lisp_Object window) |
| 6088 | { |
| 6089 | struct window *w = decode_window (window); |
| 6090 | |
| 6091 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
| 6092 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), |
| 6093 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
| 6094 | ? Qt : Qnil), Qnil))); |
| 6095 | } |
| 6096 | |
| 6097 | |
| 6098 | \f |
| 6099 | /*********************************************************************** |
| 6100 | Scroll bars |
| 6101 | ***********************************************************************/ |
| 6102 | |
| 6103 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, |
| 6104 | Sset_window_scroll_bars, 2, 4, 0, |
| 6105 | doc: /* Set width and type of scroll bars of window WINDOW. |
| 6106 | If window is nil, set scroll bars of the currently selected window. |
| 6107 | Second parameter WIDTH specifies the pixel width for the scroll bar; |
| 6108 | this is automatically adjusted to a multiple of the frame column width. |
| 6109 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll |
| 6110 | bar: left, right, or nil. |
| 6111 | If WIDTH is nil, use the frame's scroll-bar width. |
| 6112 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
| 6113 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) |
| 6114 | (Lisp_Object window, Lisp_Object width, Lisp_Object vertical_type, Lisp_Object horizontal_type) |
| 6115 | { |
| 6116 | struct window *w = decode_window (window); |
| 6117 | |
| 6118 | if (!NILP (width)) |
| 6119 | { |
| 6120 | CHECK_NATNUM (width); |
| 6121 | |
| 6122 | if (XINT (width) == 0) |
| 6123 | vertical_type = Qnil; |
| 6124 | } |
| 6125 | |
| 6126 | if (!(NILP (vertical_type) |
| 6127 | || EQ (vertical_type, Qleft) |
| 6128 | || EQ (vertical_type, Qright) |
| 6129 | || EQ (vertical_type, Qt))) |
| 6130 | error ("Invalid type of vertical scroll bar"); |
| 6131 | |
| 6132 | if (!EQ (w->scroll_bar_width, width) |
| 6133 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) |
| 6134 | { |
| 6135 | w->scroll_bar_width = width; |
| 6136 | w->vertical_scroll_bar_type = vertical_type; |
| 6137 | |
| 6138 | adjust_window_margins (w); |
| 6139 | |
| 6140 | clear_glyph_matrix (w->current_matrix); |
| 6141 | w->window_end_valid = Qnil; |
| 6142 | |
| 6143 | ++windows_or_buffers_changed; |
| 6144 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); |
| 6145 | } |
| 6146 | |
| 6147 | return Qnil; |
| 6148 | } |
| 6149 | |
| 6150 | |
| 6151 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, |
| 6152 | 0, 1, 0, |
| 6153 | doc: /* Get width and type of scroll bars of window WINDOW. |
| 6154 | If WINDOW is omitted or nil, use the currently selected window. |
| 6155 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
| 6156 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding |
| 6157 | value. */) |
| 6158 | (Lisp_Object window) |
| 6159 | { |
| 6160 | struct window *w = decode_window (window); |
| 6161 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) |
| 6162 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) |
| 6163 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), |
| 6164 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), |
| 6165 | Fcons (w->vertical_scroll_bar_type, |
| 6166 | Fcons (Qnil, Qnil)))); |
| 6167 | } |
| 6168 | |
| 6169 | |
| 6170 | \f |
| 6171 | /*********************************************************************** |
| 6172 | Smooth scrolling |
| 6173 | ***********************************************************************/ |
| 6174 | |
| 6175 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
| 6176 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
| 6177 | Use the selected window if WINDOW is nil or omitted. |
| 6178 | Normally, value is a multiple of the canonical character height of WINDOW; |
| 6179 | optional second arg PIXELS-P means value is measured in pixels. */) |
| 6180 | (Lisp_Object window, Lisp_Object pixels_p) |
| 6181 | { |
| 6182 | Lisp_Object result; |
| 6183 | struct frame *f; |
| 6184 | struct window *w; |
| 6185 | |
| 6186 | if (NILP (window)) |
| 6187 | window = selected_window; |
| 6188 | else |
| 6189 | CHECK_WINDOW (window); |
| 6190 | w = XWINDOW (window); |
| 6191 | f = XFRAME (w->frame); |
| 6192 | |
| 6193 | if (FRAME_WINDOW_P (f)) |
| 6194 | result = (NILP (pixels_p) |
| 6195 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) |
| 6196 | : make_number (-w->vscroll)); |
| 6197 | else |
| 6198 | result = make_number (0); |
| 6199 | return result; |
| 6200 | } |
| 6201 | |
| 6202 | |
| 6203 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, |
| 6204 | 2, 3, 0, |
| 6205 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
| 6206 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
| 6207 | non-negative multiple of the canonical character height of WINDOW; |
| 6208 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
| 6209 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
| 6210 | corresponds to an integral number of pixels. The return value is the |
| 6211 | result of this rounding. |
| 6212 | If PIXELS-P is non-nil, the return value is VSCROLL. */) |
| 6213 | (Lisp_Object window, Lisp_Object vscroll, Lisp_Object pixels_p) |
| 6214 | { |
| 6215 | struct window *w; |
| 6216 | struct frame *f; |
| 6217 | |
| 6218 | if (NILP (window)) |
| 6219 | window = selected_window; |
| 6220 | else |
| 6221 | CHECK_WINDOW (window); |
| 6222 | CHECK_NUMBER_OR_FLOAT (vscroll); |
| 6223 | |
| 6224 | w = XWINDOW (window); |
| 6225 | f = XFRAME (w->frame); |
| 6226 | |
| 6227 | if (FRAME_WINDOW_P (f)) |
| 6228 | { |
| 6229 | int old_dy = w->vscroll; |
| 6230 | |
| 6231 | w->vscroll = - (NILP (pixels_p) |
| 6232 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) |
| 6233 | : XFLOATINT (vscroll)); |
| 6234 | w->vscroll = min (w->vscroll, 0); |
| 6235 | |
| 6236 | if (w->vscroll != old_dy) |
| 6237 | { |
| 6238 | /* Adjust glyph matrix of the frame if the virtual display |
| 6239 | area becomes larger than before. */ |
| 6240 | if (w->vscroll < 0 && w->vscroll < old_dy) |
| 6241 | adjust_glyphs (f); |
| 6242 | |
| 6243 | /* Prevent redisplay shortcuts. */ |
| 6244 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
| 6245 | } |
| 6246 | } |
| 6247 | |
| 6248 | return Fwindow_vscroll (window, pixels_p); |
| 6249 | } |
| 6250 | |
| 6251 | \f |
| 6252 | /* Call FN for all leaf windows on frame F. FN is called with the |
| 6253 | first argument being a pointer to the leaf window, and with |
| 6254 | additional argument USER_DATA. Stops when FN returns 0. */ |
| 6255 | |
| 6256 | static void |
| 6257 | foreach_window (struct frame *f, int (*fn) (struct window *, void *), |
| 6258 | void *user_data) |
| 6259 | { |
| 6260 | /* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
| 6261 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) |
| 6262 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); |
| 6263 | } |
| 6264 | |
| 6265 | |
| 6266 | /* Helper function for foreach_window. Call FN for all leaf windows |
| 6267 | reachable from W. FN is called with the first argument being a |
| 6268 | pointer to the leaf window, and with additional argument USER_DATA. |
| 6269 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
| 6270 | |
| 6271 | static int |
| 6272 | foreach_window_1 (struct window *w, int (*fn) (struct window *, void *), void *user_data) |
| 6273 | { |
| 6274 | int cont; |
| 6275 | |
| 6276 | for (cont = 1; w && cont;) |
| 6277 | { |
| 6278 | if (!NILP (w->hchild)) |
| 6279 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
| 6280 | else if (!NILP (w->vchild)) |
| 6281 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
| 6282 | else |
| 6283 | cont = fn (w, user_data); |
| 6284 | |
| 6285 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
| 6286 | } |
| 6287 | |
| 6288 | return cont; |
| 6289 | } |
| 6290 | |
| 6291 | |
| 6292 | /* Freeze or unfreeze the window start of W unless it is a |
| 6293 | mini-window or the selected window. FREEZE_P non-null means freeze |
| 6294 | the window start. */ |
| 6295 | |
| 6296 | static int |
| 6297 | freeze_window_start (struct window *w, void *freeze_p) |
| 6298 | { |
| 6299 | if (MINI_WINDOW_P (w) |
| 6300 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ |
| 6301 | && (w == XWINDOW (selected_window) |
| 6302 | || (MINI_WINDOW_P (XWINDOW (selected_window)) |
| 6303 | && ! NILP (Vminibuf_scroll_window) |
| 6304 | && w == XWINDOW (Vminibuf_scroll_window))))) |
| 6305 | freeze_p = NULL; |
| 6306 | |
| 6307 | w->frozen_window_start_p = freeze_p != NULL; |
| 6308 | return 1; |
| 6309 | } |
| 6310 | |
| 6311 | |
| 6312 | /* Freeze or unfreeze the window starts of all leaf windows on frame |
| 6313 | F, except the selected window and a mini-window. FREEZE_P non-zero |
| 6314 | means freeze the window start. */ |
| 6315 | |
| 6316 | void |
| 6317 | freeze_window_starts (struct frame *f, int freeze_p) |
| 6318 | { |
| 6319 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
| 6320 | } |
| 6321 | |
| 6322 | \f |
| 6323 | /*********************************************************************** |
| 6324 | Initialization |
| 6325 | ***********************************************************************/ |
| 6326 | |
| 6327 | /* Return 1 if window configurations CONFIGURATION1 and CONFIGURATION2 |
| 6328 | describe the same state of affairs. This is used by Fequal. |
| 6329 | |
| 6330 | ignore_positions non-zero means ignore non-matching scroll positions |
| 6331 | and the like. |
| 6332 | |
| 6333 | This ignores a couple of things like the dedicatedness status of |
| 6334 | window, splits, nest and the like. This might have to be fixed. */ |
| 6335 | |
| 6336 | int |
| 6337 | compare_window_configurations (Lisp_Object configuration1, Lisp_Object configuration2, int ignore_positions) |
| 6338 | { |
| 6339 | register struct save_window_data *d1, *d2; |
| 6340 | struct Lisp_Vector *sws1, *sws2; |
| 6341 | ptrdiff_t i; |
| 6342 | |
| 6343 | CHECK_WINDOW_CONFIGURATION (configuration1); |
| 6344 | CHECK_WINDOW_CONFIGURATION (configuration2); |
| 6345 | |
| 6346 | d1 = (struct save_window_data *) XVECTOR (configuration1); |
| 6347 | d2 = (struct save_window_data *) XVECTOR (configuration2); |
| 6348 | sws1 = XVECTOR (d1->saved_windows); |
| 6349 | sws2 = XVECTOR (d2->saved_windows); |
| 6350 | |
| 6351 | /* Frame settings must match. */ |
| 6352 | if (d1->frame_cols != d2->frame_cols |
| 6353 | || d1->frame_lines != d2->frame_lines |
| 6354 | || d1->frame_menu_bar_lines != d2->frame_menu_bar_lines |
| 6355 | || !EQ (d1->selected_frame, d2->selected_frame) |
| 6356 | || !EQ (d1->current_buffer, d2->current_buffer) |
| 6357 | || (!ignore_positions |
| 6358 | && (!EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window) |
| 6359 | || !EQ (d1->minibuf_selected_window, d2->minibuf_selected_window))) |
| 6360 | || !EQ (d1->focus_frame, d2->focus_frame) |
| 6361 | /* Verify that the two configurations have the same number of windows. */ |
| 6362 | || sws1->header.size != sws2->header.size) |
| 6363 | return 0; |
| 6364 | |
| 6365 | for (i = 0; i < sws1->header.size; i++) |
| 6366 | { |
| 6367 | struct saved_window *sw1, *sw2; |
| 6368 | |
| 6369 | sw1 = SAVED_WINDOW_N (sws1, i); |
| 6370 | sw2 = SAVED_WINDOW_N (sws2, i); |
| 6371 | |
| 6372 | if ( |
| 6373 | /* The "current" windows in the two configurations must |
| 6374 | correspond to each other. */ |
| 6375 | EQ (d1->current_window, sw1->window) |
| 6376 | != EQ (d2->current_window, sw2->window) |
| 6377 | /* Windows' buffers must match. */ |
| 6378 | || !EQ (sw1->buffer, sw2->buffer) |
| 6379 | || !EQ (sw1->left_col, sw2->left_col) |
| 6380 | || !EQ (sw1->top_line, sw2->top_line) |
| 6381 | || !EQ (sw1->total_cols, sw2->total_cols) |
| 6382 | || !EQ (sw1->total_lines, sw2->total_lines) |
| 6383 | || !EQ (sw1->display_table, sw2->display_table) |
| 6384 | /* The next two disjuncts check the window structure for |
| 6385 | equality. */ |
| 6386 | || !EQ (sw1->parent, sw2->parent) |
| 6387 | || !EQ (sw1->prev, sw2->prev) |
| 6388 | || (!ignore_positions |
| 6389 | && (!EQ (sw1->hscroll, sw2->hscroll) |
| 6390 | || !EQ (sw1->min_hscroll, sw2->min_hscroll) |
| 6391 | || !EQ (sw1->start_at_line_beg, sw2->start_at_line_beg) |
| 6392 | || NILP (Fequal (sw1->start, sw2->start)) |
| 6393 | || NILP (Fequal (sw1->pointm, sw2->pointm)) |
| 6394 | || NILP (Fequal (sw1->mark, sw2->mark)))) |
| 6395 | || !EQ (sw1->left_margin_cols, sw2->left_margin_cols) |
| 6396 | || !EQ (sw1->right_margin_cols, sw2->right_margin_cols) |
| 6397 | || !EQ (sw1->left_fringe_width, sw2->left_fringe_width) |
| 6398 | || !EQ (sw1->right_fringe_width, sw2->right_fringe_width) |
| 6399 | || !EQ (sw1->fringes_outside_margins, sw2->fringes_outside_margins) |
| 6400 | || !EQ (sw1->scroll_bar_width, sw2->scroll_bar_width) |
| 6401 | || !EQ (sw1->vertical_scroll_bar_type, sw2->vertical_scroll_bar_type)) |
| 6402 | return 0; |
| 6403 | } |
| 6404 | |
| 6405 | return 1; |
| 6406 | } |
| 6407 | |
| 6408 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, |
| 6409 | Scompare_window_configurations, 2, 2, 0, |
| 6410 | doc: /* Compare two window configurations as regards the structure of windows. |
| 6411 | This function ignores details such as the values of point and mark |
| 6412 | and scrolling positions. */) |
| 6413 | (Lisp_Object x, Lisp_Object y) |
| 6414 | { |
| 6415 | if (compare_window_configurations (x, y, 1)) |
| 6416 | return Qt; |
| 6417 | return Qnil; |
| 6418 | } |
| 6419 | \f |
| 6420 | void |
| 6421 | init_window_once (void) |
| 6422 | { |
| 6423 | struct frame *f = make_initial_frame (); |
| 6424 | XSETFRAME (selected_frame, f); |
| 6425 | Vterminal_frame = selected_frame; |
| 6426 | minibuf_window = f->minibuffer_window; |
| 6427 | selected_window = f->selected_window; |
| 6428 | last_nonminibuf_frame = f; |
| 6429 | |
| 6430 | window_initialized = 1; |
| 6431 | } |
| 6432 | |
| 6433 | void |
| 6434 | init_window (void) |
| 6435 | { |
| 6436 | Vwindow_list = Qnil; |
| 6437 | } |
| 6438 | |
| 6439 | void |
| 6440 | syms_of_window (void) |
| 6441 | { |
| 6442 | DEFSYM (Qscroll_up, "scroll-up"); |
| 6443 | DEFSYM (Qscroll_down, "scroll-down"); |
| 6444 | DEFSYM (Qscroll_command, "scroll-command"); |
| 6445 | |
| 6446 | Fput (Qscroll_up, Qscroll_command, Qt); |
| 6447 | Fput (Qscroll_down, Qscroll_command, Qt); |
| 6448 | |
| 6449 | DEFSYM (Qwindow_configuration_change_hook, "window-configuration-change-hook"); |
| 6450 | DEFSYM (Qwindowp, "windowp"); |
| 6451 | DEFSYM (Qwindow_configuration_p, "window-configuration-p"); |
| 6452 | DEFSYM (Qwindow_live_p, "window-live-p"); |
| 6453 | DEFSYM (Qwindow_deletable_p, "window-deletable-p"); |
| 6454 | DEFSYM (Qdelete_window, "delete-window"); |
| 6455 | DEFSYM (Qwindow_resize_root_window, "window--resize-root-window"); |
| 6456 | DEFSYM (Qwindow_resize_root_window_vertically, "window--resize-root-window-vertically"); |
| 6457 | DEFSYM (Qsafe, "safe"); |
| 6458 | DEFSYM (Qdisplay_buffer, "display-buffer"); |
| 6459 | DEFSYM (Qreplace_buffer_in_windows, "replace-buffer-in-windows"); |
| 6460 | DEFSYM (Qrecord_window_buffer, "record-window-buffer"); |
| 6461 | DEFSYM (Qget_mru_window, "get-mru-window"); |
| 6462 | DEFSYM (Qtemp_buffer_show_hook, "temp-buffer-show-hook"); |
| 6463 | DEFSYM (Qabove, "above"); |
| 6464 | DEFSYM (Qbelow, "below"); |
| 6465 | DEFSYM (Qauto_buffer_name, "auto-buffer-name"); |
| 6466 | |
| 6467 | staticpro (&Vwindow_list); |
| 6468 | |
| 6469 | minibuf_selected_window = Qnil; |
| 6470 | staticpro (&minibuf_selected_window); |
| 6471 | |
| 6472 | window_scroll_pixel_based_preserve_x = -1; |
| 6473 | window_scroll_pixel_based_preserve_y = -1; |
| 6474 | window_scroll_preserve_hpos = -1; |
| 6475 | window_scroll_preserve_vpos = -1; |
| 6476 | |
| 6477 | DEFVAR_LISP ("temp-buffer-show-function", Vtemp_buffer_show_function, |
| 6478 | doc: /* Non-nil means call as function to display a help buffer. |
| 6479 | The function is called with one argument, the buffer to be displayed. |
| 6480 | Used by `with-output-to-temp-buffer'. |
| 6481 | If this function is used, then it must do the entire job of showing |
| 6482 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); |
| 6483 | Vtemp_buffer_show_function = Qnil; |
| 6484 | |
| 6485 | DEFVAR_LISP ("temp-buffer-show-specifiers", Vtemp_buffer_show_specifiers, |
| 6486 | doc: /* Buffer display specifiers used by `with-output-to-temp-buffer'. |
| 6487 | These specifiers are passed by `with-output-to-temp-buffer' as second |
| 6488 | argument to `display-buffer'. Applications should only let-bind this |
| 6489 | around a call to `with-output-to-temp-buffer'. |
| 6490 | |
| 6491 | For a description of buffer display specifiers see the variable |
| 6492 | `display-buffer-alist'. */); |
| 6493 | Vtemp_buffer_show_specifiers = Qnil; |
| 6494 | |
| 6495 | DEFVAR_LISP ("minibuffer-scroll-window", Vminibuf_scroll_window, |
| 6496 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
| 6497 | Vminibuf_scroll_window = Qnil; |
| 6498 | |
| 6499 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", mode_line_in_non_selected_windows, |
| 6500 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
| 6501 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
| 6502 | is displayed in the `mode-line' face. */); |
| 6503 | mode_line_in_non_selected_windows = 1; |
| 6504 | |
| 6505 | DEFVAR_LISP ("other-window-scroll-buffer", Vother_window_scroll_buffer, |
| 6506 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
| 6507 | Vother_window_scroll_buffer = Qnil; |
| 6508 | |
| 6509 | DEFVAR_BOOL ("auto-window-vscroll", auto_window_vscroll_p, |
| 6510 | doc: /* Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); |
| 6511 | auto_window_vscroll_p = 1; |
| 6512 | |
| 6513 | DEFVAR_INT ("next-screen-context-lines", next_screen_context_lines, |
| 6514 | doc: /* Number of lines of continuity when scrolling by screenfuls. */); |
| 6515 | next_screen_context_lines = 2; |
| 6516 | |
| 6517 | DEFVAR_LISP ("scroll-preserve-screen-position", |
| 6518 | Vscroll_preserve_screen_position, |
| 6519 | doc: /* Controls if scroll commands move point to keep its screen position unchanged. |
| 6520 | A value of nil means point does not keep its screen position except |
| 6521 | at the scroll margin or window boundary respectively. |
| 6522 | A value of t means point keeps its screen position if the scroll |
| 6523 | command moved it vertically out of the window, e.g. when scrolling |
| 6524 | by full screens. |
| 6525 | Any other value means point always keeps its screen position. |
| 6526 | Scroll commands should have the `scroll-command' property |
| 6527 | on their symbols to be controlled by this variable. */); |
| 6528 | Vscroll_preserve_screen_position = Qnil; |
| 6529 | |
| 6530 | DEFVAR_LISP ("window-point-insertion-type", Vwindow_point_insertion_type, |
| 6531 | doc: /* Type of marker to use for `window-point'. */); |
| 6532 | Vwindow_point_insertion_type = Qnil; |
| 6533 | |
| 6534 | DEFVAR_LISP ("window-configuration-change-hook", |
| 6535 | Vwindow_configuration_change_hook, |
| 6536 | doc: /* Functions to call when window configuration changes. |
| 6537 | The buffer-local part is run once per window, with the relevant window |
| 6538 | selected; while the global part is run only once for the modified frame, |
| 6539 | with the relevant frame selected. */); |
| 6540 | Vwindow_configuration_change_hook = Qnil; |
| 6541 | |
| 6542 | DEFVAR_LISP ("recenter-redisplay", Vrecenter_redisplay, |
| 6543 | doc: /* If non-nil, then the `recenter' command with a nil argument |
| 6544 | will redraw the entire frame; the special value `tty' causes the |
| 6545 | frame to be redrawn only if it is a tty frame. */); |
| 6546 | Vrecenter_redisplay = Qtty; |
| 6547 | |
| 6548 | DEFVAR_LISP ("window-splits", Vwindow_splits, |
| 6549 | doc: /* Non-nil means splitting windows is handled specially. |
| 6550 | If this variable is nil, splitting a window gets the entire screen space |
| 6551 | for displaying the new window from the window to split. If this |
| 6552 | variable is non-nil, splitting a window may resize all windows in the |
| 6553 | same combination. This also allows to split a window that is otherwise |
| 6554 | too small or of fixed size. |
| 6555 | |
| 6556 | The value of this variable is also assigned to the split status of the |
| 6557 | new window and, provided the old and new window form a new combination, |
| 6558 | to the window that was split as well. The split status of a window can |
| 6559 | be retrieved with the function `window-splits' and altered by the |
| 6560 | function `set-window-splits'. |
| 6561 | |
| 6562 | If the value of the variable `window-nest' is non-nil, the space for the |
| 6563 | new window is exclusively taken from the window that shall be split, but |
| 6564 | the split status of the window that is split as well as that of the new |
| 6565 | window are still set to the value of this variable. */); |
| 6566 | Vwindow_splits = Qnil; |
| 6567 | |
| 6568 | DEFVAR_LISP ("window-nest", Vwindow_nest, |
| 6569 | doc: /* Non-nil means splitting a window makes a new parent window. |
| 6570 | If this variable is nil, splitting a window will create a new parent |
| 6571 | window only if the window has no parent window or the window shall |
| 6572 | become a combination orthogonal to the one it it is part of. |
| 6573 | |
| 6574 | If this variable is non-nil, splitting a window always creates a new |
| 6575 | parent window. If all splits behave this way, each frame's window tree |
| 6576 | is a binary tree and every window but the frame's root window has |
| 6577 | exactly one sibling. |
| 6578 | |
| 6579 | The value of this variable is also assigned to the nest status of the |
| 6580 | new parent window. The nest status of a window can be retrieved via the |
| 6581 | function `window-nest' and altered by the function `set-window-nest'. */); |
| 6582 | Vwindow_nest = Qnil; |
| 6583 | |
| 6584 | defsubr (&Sselected_window); |
| 6585 | defsubr (&Sminibuffer_window); |
| 6586 | defsubr (&Swindow_minibuffer_p); |
| 6587 | defsubr (&Swindowp); |
| 6588 | defsubr (&Swindow_live_p); |
| 6589 | defsubr (&Swindow_frame); |
| 6590 | defsubr (&Sframe_root_window); |
| 6591 | defsubr (&Sframe_first_window); |
| 6592 | defsubr (&Sframe_selected_window); |
| 6593 | defsubr (&Sset_frame_selected_window); |
| 6594 | defsubr (&Spos_visible_in_window_p); |
| 6595 | defsubr (&Swindow_line_height); |
| 6596 | defsubr (&Swindow_buffer); |
| 6597 | defsubr (&Swindow_parent); |
| 6598 | defsubr (&Swindow_top_child); |
| 6599 | defsubr (&Swindow_left_child); |
| 6600 | defsubr (&Swindow_next_sibling); |
| 6601 | defsubr (&Swindow_prev_sibling); |
| 6602 | defsubr (&Swindow_splits); |
| 6603 | defsubr (&Sset_window_splits); |
| 6604 | defsubr (&Swindow_nest); |
| 6605 | defsubr (&Sset_window_nest); |
| 6606 | defsubr (&Swindow_use_time); |
| 6607 | defsubr (&Swindow_top_line); |
| 6608 | defsubr (&Swindow_left_column); |
| 6609 | defsubr (&Swindow_total_size); |
| 6610 | defsubr (&Swindow_normal_size); |
| 6611 | defsubr (&Swindow_new_total); |
| 6612 | defsubr (&Swindow_new_normal); |
| 6613 | defsubr (&Sset_window_new_total); |
| 6614 | defsubr (&Sset_window_new_normal); |
| 6615 | defsubr (&Swindow_resize_apply); |
| 6616 | defsubr (&Swindow_body_size); |
| 6617 | defsubr (&Swindow_hscroll); |
| 6618 | defsubr (&Sset_window_hscroll); |
| 6619 | defsubr (&Swindow_redisplay_end_trigger); |
| 6620 | defsubr (&Sset_window_redisplay_end_trigger); |
| 6621 | defsubr (&Swindow_edges); |
| 6622 | defsubr (&Swindow_pixel_edges); |
| 6623 | defsubr (&Swindow_absolute_pixel_edges); |
| 6624 | defsubr (&Swindow_inside_edges); |
| 6625 | defsubr (&Swindow_inside_pixel_edges); |
| 6626 | defsubr (&Swindow_inside_absolute_pixel_edges); |
| 6627 | defsubr (&Scoordinates_in_window_p); |
| 6628 | defsubr (&Swindow_at); |
| 6629 | defsubr (&Swindow_point); |
| 6630 | defsubr (&Swindow_start); |
| 6631 | defsubr (&Swindow_end); |
| 6632 | defsubr (&Sset_window_point); |
| 6633 | defsubr (&Sset_window_start); |
| 6634 | defsubr (&Swindow_dedicated_p); |
| 6635 | defsubr (&Sset_window_dedicated_p); |
| 6636 | defsubr (&Swindow_display_table); |
| 6637 | defsubr (&Sset_window_display_table); |
| 6638 | defsubr (&Snext_window); |
| 6639 | defsubr (&Sprevious_window); |
| 6640 | defsubr (&Sget_buffer_window); |
| 6641 | defsubr (&Sdelete_other_windows_internal); |
| 6642 | defsubr (&Sdelete_window_internal); |
| 6643 | defsubr (&Sresize_mini_window_internal); |
| 6644 | defsubr (&Sset_window_buffer); |
| 6645 | defsubr (&Srun_window_configuration_change_hook); |
| 6646 | defsubr (&Sselect_window); |
| 6647 | defsubr (&Sforce_window_update); |
| 6648 | defsubr (&Stemp_output_buffer_show); |
| 6649 | defsubr (&Ssplit_window_internal); |
| 6650 | defsubr (&Sscroll_up); |
| 6651 | defsubr (&Sscroll_down); |
| 6652 | defsubr (&Sscroll_left); |
| 6653 | defsubr (&Sscroll_right); |
| 6654 | defsubr (&Sother_window_for_scrolling); |
| 6655 | defsubr (&Sscroll_other_window); |
| 6656 | defsubr (&Sminibuffer_selected_window); |
| 6657 | defsubr (&Srecenter); |
| 6658 | defsubr (&Swindow_text_height); |
| 6659 | defsubr (&Smove_to_window_line); |
| 6660 | defsubr (&Swindow_configuration_p); |
| 6661 | defsubr (&Swindow_configuration_frame); |
| 6662 | defsubr (&Sset_window_configuration); |
| 6663 | defsubr (&Scurrent_window_configuration); |
| 6664 | defsubr (&Sset_window_margins); |
| 6665 | defsubr (&Swindow_margins); |
| 6666 | defsubr (&Sset_window_fringes); |
| 6667 | defsubr (&Swindow_fringes); |
| 6668 | defsubr (&Sset_window_scroll_bars); |
| 6669 | defsubr (&Swindow_scroll_bars); |
| 6670 | defsubr (&Swindow_vscroll); |
| 6671 | defsubr (&Sset_window_vscroll); |
| 6672 | defsubr (&Scompare_window_configurations); |
| 6673 | defsubr (&Swindow_list); |
| 6674 | defsubr (&Swindow_list_1); |
| 6675 | defsubr (&Swindow_prev_buffers); |
| 6676 | defsubr (&Sset_window_prev_buffers); |
| 6677 | defsubr (&Swindow_next_buffers); |
| 6678 | defsubr (&Sset_window_next_buffers); |
| 6679 | defsubr (&Swindow_parameters); |
| 6680 | defsubr (&Swindow_parameter); |
| 6681 | defsubr (&Sset_window_parameter); |
| 6682 | } |
| 6683 | |
| 6684 | void |
| 6685 | keys_of_window (void) |
| 6686 | { |
| 6687 | initial_define_key (control_x_map, '<', "scroll-left"); |
| 6688 | initial_define_key (control_x_map, '>', "scroll-right"); |
| 6689 | |
| 6690 | initial_define_key (global_map, Ctl ('V'), "scroll-up-command"); |
| 6691 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); |
| 6692 | initial_define_key (meta_map, 'v', "scroll-down-command"); |
| 6693 | } |