Mercurial > hg > xemacs-beta
annotate lisp/picture.el @ 5740:00a421d2b2ba
Fix no-Mule build.
* paragraphs.el (sentence-end): Use octal, not Unicode, escapes.
* (sentence-end-base): Use non-ASCII only in Mule.
| author | Stephen J. Turnbull <stephen@xemacs.org> |
|---|---|
| date | Fri, 21 Jun 2013 18:45:06 +0900 |
| parents | 308d34e9f07d |
| children |
| rev | line source |
|---|---|
| 219 | 1 ;;; picture.el --- "Picture mode" -- editing using quarter-plane screen model. |
| 2 | |
| 3 ;; Copyright (C) 1985, 1994 Free Software Foundation, Inc. | |
| 4 | |
| 5 ;; Author: K. Shane Hartman | |
| 6 ;; Maintainer: FSF | |
| 7 | |
| 8 ;; This file is part of XEmacs. | |
| 9 | |
|
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10 ;; XEmacs is free software: you can redistribute it and/or modify it |
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11 ;; under the terms of the GNU General Public License as published by the |
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12 ;; Free Software Foundation, either version 3 of the License, or (at your |
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13 ;; option) any later version. |
| 219 | 14 |
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15 ;; XEmacs is distributed in the hope that it will be useful, but WITHOUT |
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16 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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17 ;; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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18 ;; for more details. |
| 219 | 19 |
| 20 ;; You should have received a copy of the GNU General Public License | |
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21 ;; along with XEmacs. If not, see <http://www.gnu.org/licenses/>. |
| 219 | 22 |
| 23 ;;; Synched up with: FSF 19.30. | |
| 24 | |
| 25 ;; XEmacs changes: | |
| 26 ;; -- set zmacs-region-stays | |
| 27 ;; -- set mouse-track-rectangle-p | |
| 28 ;; -- deleted useless hscroll-point-visible junk. | |
| 29 | |
| 30 | |
| 31 ;;; Commentary: | |
| 32 | |
| 33 ;; This code provides the picture-mode commands documented in the Emacs | |
| 34 ;; manual. The screen is treated as a semi-infinite quarter-plane with | |
| 35 ;; support for rectangle operations and `etch-a-sketch' character | |
| 36 ;; insertion in any of eight directions. | |
| 37 | |
| 38 ;;; Code: | |
| 39 | |
| 40 (defun move-to-column-force (column) | |
| 41 "Move to column COLUMN in current line. | |
| 42 Differs from `move-to-column' in that it creates or modifies whitespace | |
| 43 if necessary to attain exactly the specified column." | |
| 44 (or (natnump column) (setq column 0)) | |
| 45 (move-to-column column) | |
| 46 (let ((col (current-column))) | |
| 47 (if (< col column) | |
| 48 (indent-to column) | |
| 49 (if (and (/= col column) | |
| 50 (= (preceding-char) ?\t)) | |
| 51 (let (indent-tabs-mode) | |
| 52 (delete-char -1) | |
| 53 (indent-to col) | |
| 54 (move-to-column column)))) | |
| 55 (prog1 | |
| 56 ;; XEmacs addition: | |
| 57 (setq zmacs-region-stays t)))) | |
| 58 | |
| 59 | |
| 60 ;; Picture Movement Commands | |
| 61 | |
| 62 (defun picture-beginning-of-line (&optional arg) | |
| 63 "Position point at the beginning of the line. | |
| 64 With ARG not nil, move forward ARG - 1 lines first. | |
| 65 If scan reaches end of buffer, stop there without error." | |
| 66 (interactive "P") | |
| 67 (if arg (forward-line (1- (prefix-numeric-value arg)))) | |
| 68 (beginning-of-line) | |
| 69 ) | |
| 70 | |
| 71 (defun picture-end-of-line (&optional arg) | |
| 72 "Position point after last non-blank character on current line. | |
| 73 With ARG not nil, move forward ARG - 1 lines first. | |
| 74 If scan reaches end of buffer, stop there without error." | |
| 75 (interactive "P") | |
| 76 (if arg (forward-line (1- (prefix-numeric-value arg)))) | |
| 77 (beginning-of-line) | |
| 78 (skip-chars-backward " \t" (prog1 (point) (end-of-line))) | |
| 79 ) | |
| 80 | |
| 81 (defun picture-forward-column (arg) | |
| 82 "Move cursor right, making whitespace if necessary. | |
| 83 With argument, move that many columns." | |
| 84 (interactive "p") | |
| 85 (let ((target-column (+ (current-column) arg))) | |
| 86 (move-to-column-force target-column) | |
| 87 ;; Picture mode isn't really suited to multi-column characters, | |
| 88 ;; but we might as well let the user move across them. | |
| 89 (and (< arg 0) | |
| 90 (> (current-column) target-column) | |
| 446 | 91 (backward-char 1)))) |
| 219 | 92 |
| 93 (defun picture-backward-column (arg) | |
| 94 "Move cursor left, making whitespace if necessary. | |
| 95 With argument, move that many columns." | |
| 96 (interactive "p") | |
| 97 (picture-forward-column (- arg))) | |
| 98 | |
| 99 (defun picture-move-down (arg) | |
| 100 "Move vertically down, making whitespace if necessary. | |
| 101 With argument, move that many lines." | |
| 102 (interactive "p") | |
| 103 (let ((col (current-column))) | |
| 104 (picture-newline arg) | |
| 105 (move-to-column-force col))) | |
| 106 | |
| 107 (defconst picture-vertical-step 0 | |
| 108 "Amount to move vertically after text character in Picture mode.") | |
| 109 | |
| 110 (defconst picture-horizontal-step 1 | |
| 111 "Amount to move horizontally after text character in Picture mode.") | |
| 112 | |
| 113 (defun picture-move-up (arg) | |
| 114 "Move vertically up, making whitespace if necessary. | |
| 115 With argument, move that many lines." | |
| 116 (interactive "p") | |
| 117 (picture-move-down (- arg))) | |
| 118 | |
| 119 (defun picture-movement-right () | |
| 120 "Move right after self-inserting character in Picture mode." | |
| 121 (interactive) | |
| 122 (picture-set-motion 0 1)) | |
| 123 | |
| 124 (defun picture-movement-left () | |
| 125 "Move left after self-inserting character in Picture mode." | |
| 126 (interactive) | |
| 127 (picture-set-motion 0 -1)) | |
| 128 | |
| 129 (defun picture-movement-up () | |
| 130 "Move up after self-inserting character in Picture mode." | |
| 131 (interactive) | |
| 132 (picture-set-motion -1 0)) | |
| 133 | |
| 134 (defun picture-movement-down () | |
| 135 "Move down after self-inserting character in Picture mode." | |
| 136 (interactive) | |
| 137 (picture-set-motion 1 0)) | |
| 138 | |
| 139 (defun picture-movement-nw () | |
| 140 "Move up and left after self-inserting character in Picture mode." | |
| 141 (interactive) | |
| 142 (picture-set-motion -1 -1)) | |
| 143 | |
| 144 (defun picture-movement-ne () | |
| 145 "Move up and right after self-inserting character in Picture mode." | |
| 146 (interactive) | |
| 147 (picture-set-motion -1 1)) | |
| 148 | |
| 149 (defun picture-movement-sw () | |
| 150 "Move down and left after self-inserting character in Picture mode." | |
| 151 (interactive) | |
| 152 (picture-set-motion 1 -1)) | |
| 153 | |
| 154 (defun picture-movement-se () | |
| 155 "Move down and right after self-inserting character in Picture mode." | |
| 156 (interactive) | |
| 157 (picture-set-motion 1 1)) | |
| 158 | |
| 159 (defun picture-set-motion (vert horiz) | |
| 160 "Set VERTICAL and HORIZONTAL increments for movement in Picture mode. | |
| 161 The modeline is updated to reflect the current direction." | |
| 162 (setq picture-vertical-step vert | |
| 163 picture-horizontal-step horiz) | |
| 164 (setq mode-name | |
| 165 (format "Picture:%s" | |
| 166 (car (nthcdr (+ 1 (% horiz 2) (* 3 (1+ (% vert 2)))) | |
| 167 '(nw up ne left none right sw down se))))) | |
| 168 (redraw-modeline) | |
| 169 (message nil)) | |
| 170 | |
| 171 (defun picture-move () | |
| 172 "Move in direction of `picture-vertical-step' and `picture-horizontal-step'." | |
| 173 (picture-move-down picture-vertical-step) | |
| 174 (picture-forward-column picture-horizontal-step)) | |
| 175 | |
| 176 (defun picture-motion (arg) | |
| 177 "Move point in direction of current picture motion in Picture mode. | |
| 178 With ARG do it that many times. Useful for delineating rectangles in | |
| 179 conjunction with diagonal picture motion. | |
| 180 Do \\[command-apropos] picture-movement to see commands which control motion." | |
| 181 (interactive "p") | |
| 182 (picture-move-down (* arg picture-vertical-step)) | |
| 183 (picture-forward-column (* arg picture-horizontal-step))) | |
| 184 | |
| 185 (defun picture-motion-reverse (arg) | |
| 186 "Move point in direction opposite of current picture motion in Picture mode. | |
| 187 With ARG do it that many times. Useful for delineating rectangles in | |
| 188 conjunction with diagonal picture motion. | |
| 189 Do \\[command-apropos] `picture-movement' to see commands which control motion." | |
| 190 (interactive "p") | |
| 191 (picture-motion (- arg))) | |
| 192 | |
| 193 | |
| 194 ;; Picture insertion and deletion. | |
| 195 | |
| 196 (defun picture-self-insert (arg) | |
| 197 "Insert this character in place of character previously at the cursor. | |
| 198 The cursor then moves in the direction you previously specified | |
| 199 with the commands `picture-movement-right', `picture-movement-up', etc. | |
| 200 Do \\[command-apropos] `picture-movement' to see those commands." | |
| 201 (interactive "p") | |
| 202 (while (> arg 0) | |
| 203 (setq arg (1- arg)) | |
| 204 (move-to-column-force (1+ (current-column))) | |
| 205 (delete-char -1) | |
| 206 ;; FSF changes the following to last-command-event. | |
| 207 (insert last-command-char) | |
| 446 | 208 (backward-char 1) |
| 219 | 209 (picture-move) |
| 210 ;; XEmacs addition: | |
| 211 (setq zmacs-region-stays nil))) | |
| 212 | |
| 213 (defun picture-clear-column (arg) | |
| 214 "Clear out ARG columns after point without moving." | |
| 215 (interactive "p") | |
| 216 (let* ((opoint (point)) | |
| 217 (original-col (current-column)) | |
| 218 (target-col (+ original-col arg))) | |
| 219 (move-to-column-force target-col) | |
| 220 (delete-region opoint (point)) | |
| 221 (save-excursion | |
| 222 (indent-to (max target-col original-col))))) | |
| 223 | |
| 224 (defun picture-backward-clear-column (arg) | |
| 225 "Clear out ARG columns before point, moving back over them." | |
| 226 (interactive "p") | |
| 227 (picture-clear-column (- arg))) | |
| 228 | |
| 229 (defun picture-clear-line (arg) | |
| 230 "Clear out rest of line; if at end of line, advance to next line. | |
| 231 Cleared-out line text goes into the kill ring, as do newlines that are | |
| 232 advanced over. With argument, clear out (and save in kill ring) that | |
| 233 many lines." | |
| 234 (interactive "P") | |
| 235 (if arg | |
| 236 (progn | |
| 237 (setq arg (prefix-numeric-value arg)) | |
| 238 (kill-line arg) | |
| 239 (newline (if (> arg 0) arg (- arg)))) | |
| 240 (if (looking-at "[ \t]*$") | |
| 241 (kill-ring-save (point) (progn (forward-line 1) (point))) | |
| 242 (kill-region (point) (progn (end-of-line) (point)))) | |
| 243 ;; XEmacs addition: | |
| 244 (setq zmacs-region-stays nil))) | |
| 245 | |
| 246 (defun picture-newline (arg) | |
| 247 "Move to the beginning of the following line. | |
| 248 With argument, moves that many lines (up, if negative argument); | |
| 249 always moves to the beginning of a line." | |
| 250 (interactive "p") | |
| 251 (if (< arg 0) | |
| 252 (forward-line arg) | |
| 253 (while (> arg 0) | |
| 254 (end-of-line) | |
| 255 (if (eobp) (newline) (forward-char 1)) | |
| 256 (setq arg (1- arg)))) | |
| 257 ) | |
| 258 | |
| 259 (defun picture-open-line (arg) | |
| 260 "Insert an empty line after the current line. | |
| 261 With positive argument insert that many lines." | |
| 262 (interactive "p") | |
| 263 (save-excursion | |
| 264 (end-of-line) | |
| 265 (open-line arg)) | |
| 266 ) | |
| 267 | |
| 268 (defun picture-duplicate-line () | |
| 269 "Insert a duplicate of the current line, below it." | |
| 270 (interactive) | |
| 271 (save-excursion | |
| 272 (let ((contents | |
| 273 (buffer-substring | |
| 274 (progn (beginning-of-line) (point)) | |
| 275 (progn (picture-newline 1) (point))))) | |
| 276 (forward-line -1) | |
| 277 (insert contents)))) | |
| 278 | |
| 279 ;; Like replace-match, but overwrites. | |
| 280 (defun picture-replace-match (newtext fixedcase literal) | |
| 281 (let (ocolumn change pos) | |
| 282 (goto-char (setq pos (match-end 0))) | |
| 283 (setq ocolumn (current-column)) | |
| 284 ;; Make the replacement and undo it, to see how it changes the length. | |
| 285 (let ((buffer-undo-list nil) | |
| 286 list1) | |
| 287 (replace-match newtext fixedcase literal) | |
| 288 (setq change (- (current-column) ocolumn)) | |
| 289 (setq list1 buffer-undo-list) | |
| 290 (while list1 | |
| 291 (setq list1 (primitive-undo 1 list1)))) | |
| 292 (goto-char pos) | |
| 293 (if (> change 0) | |
| 294 (delete-region (point) | |
| 295 (progn | |
| 296 (move-to-column-force (+ change (current-column))) | |
| 297 (point)))) | |
| 298 (replace-match newtext fixedcase literal) | |
| 299 (if (< change 0) | |
| 300 (insert-char ?\ (- change))))) | |
| 301 | |
| 302 ;; Picture Tabs | |
| 303 | |
| 304 (defvar picture-tab-chars "!-~" | |
| 305 "*A character set which controls behavior of commands | |
| 306 \\[picture-set-tab-stops] and \\[picture-tab-search]. It is NOT a | |
| 307 regular expression, any regexp special characters will be quoted. | |
| 308 It defines a set of \"interesting characters\" to look for when setting | |
| 309 \(or searching for) tab stops, initially \"!-~\" (all printing characters). | |
| 310 For example, suppose that you are editing a table which is formatted thus: | |
| 311 | foo | bar + baz | 23 * | |
| 312 | bubbles | and + etc | 97 * | |
| 313 and that `picture-tab-chars' is \"|+*\". Then invoking | |
| 314 \\[picture-set-tab-stops] on either of the previous lines would result | |
| 315 in the following tab stops | |
| 316 : : : : | |
| 317 Another example - \"A-Za-z0-9\" would produce the tab stops | |
| 318 : : : : | |
| 319 | |
| 320 Note that if you want the character `-' to be in the set, it must be | |
| 321 included in a range or else appear in a context where it cannot be | |
| 322 taken for indicating a range (e.g. \"-A-Z\" declares the set to be the | |
| 323 letters `A' through `Z' and the character `-'). If you want the | |
| 324 character `\\' in the set it must be preceded by itself: \"\\\\\". | |
| 325 | |
| 326 The command \\[picture-tab-search] is defined to move beneath (or to) a | |
| 327 character belonging to this set independent of the tab stops list.") | |
| 328 | |
| 329 (defun picture-set-tab-stops (&optional arg) | |
| 330 "Set value of `tab-stop-list' according to context of this line. | |
| 331 This controls the behavior of \\[picture-tab]. A tab stop is set at | |
| 332 every column occupied by an \"interesting character\" that is preceded | |
| 333 by whitespace. Interesting characters are defined by the variable | |
| 334 `picture-tab-chars', see its documentation for an example of usage. | |
| 335 With ARG, just (re)set `tab-stop-list' to its default value. The tab | |
| 336 stops computed are displayed in the minibuffer with `:' at each stop." | |
| 337 (interactive "P") | |
| 338 (save-excursion | |
| 339 (let (tabs) | |
| 340 (if arg | |
| 341 (setq tabs (default-value 'tab-stop-list)) | |
| 342 (let ((regexp (concat "[ \t]+[" (regexp-quote picture-tab-chars) "]"))) | |
| 343 (beginning-of-line) | |
| 344 (let ((bol (point))) | |
| 345 (end-of-line) | |
| 346 (while (re-search-backward regexp bol t) | |
| 347 (skip-chars-forward " \t") | |
| 348 (setq tabs (cons (current-column) tabs))) | |
| 349 (if (null tabs) | |
| 350 (error "No characters in set %s on this line." | |
| 351 (regexp-quote picture-tab-chars)))))) | |
| 352 (setq tab-stop-list tabs) | |
| 353 (let ((blurb (make-string (1+ (nth (1- (length tabs)) tabs)) ?\ ))) | |
| 354 (while tabs | |
| 355 (aset blurb (car tabs) ?:) | |
| 356 (setq tabs (cdr tabs))) | |
| 357 (message blurb))))) | |
| 358 | |
| 359 (defun picture-tab-search (&optional arg) | |
| 360 "Move to column beneath next interesting char in previous line. | |
| 361 With ARG move to column occupied by next interesting character in this | |
| 362 line. The character must be preceded by whitespace. | |
| 363 \"interesting characters\" are defined by variable `picture-tab-chars'. | |
| 364 If no such character is found, move to beginning of line." | |
| 365 (interactive "P") | |
| 366 (let ((target (current-column))) | |
| 367 (save-excursion | |
| 368 (if (and (not arg) | |
| 369 (progn | |
| 370 (beginning-of-line) | |
| 371 (skip-chars-backward | |
| 372 (concat "^" (regexp-quote picture-tab-chars)) | |
| 373 (point-min)) | |
| 374 (not (bobp)))) | |
| 375 (move-to-column target)) | |
| 376 (if (re-search-forward | |
| 377 (concat "[ \t]+[" (regexp-quote picture-tab-chars) "]") | |
| 378 (save-excursion (end-of-line) (point)) | |
| 379 'move) | |
| 380 (setq target (1- (current-column))) | |
| 381 (setq target nil))) | |
| 382 (if target | |
| 383 (move-to-column-force target) | |
| 384 (beginning-of-line)))) | |
| 385 | |
| 386 (defun picture-tab (&optional arg) | |
| 387 "Tab transparently (just move point) to next tab stop. | |
| 388 With prefix arg, overwrite the traversed text with spaces. The tab stop | |
| 389 list can be changed by \\[picture-set-tab-stops] and \\[edit-tab-stops]. | |
| 390 See also documentation for variable `picture-tab-chars'." | |
| 391 (interactive "P") | |
| 392 (let* ((opoint (point))) | |
| 393 (move-to-tab-stop) | |
| 394 (if arg | |
| 395 (let (indent-tabs-mode | |
| 396 (column (current-column))) | |
| 397 (delete-region opoint (point)) | |
| 398 (indent-to column)) | |
| 399 ;; XEmacs addition: | |
| 400 (setq zmacs-region-stays t)))) | |
| 401 | |
| 402 ;; Picture Rectangles | |
| 403 | |
| 404 (defconst picture-killed-rectangle nil | |
| 405 "Rectangle killed or copied by \\[picture-clear-rectangle] in Picture mode. | |
| 406 The contents can be retrieved by \\[picture-yank-rectangle]") | |
| 407 | |
| 408 (defun picture-clear-rectangle (start end &optional killp) | |
| 409 "Clear and save rectangle delineated by point and mark. | |
| 410 The rectangle is saved for yanking by \\[picture-yank-rectangle] and replaced | |
| 411 with whitespace. The previously saved rectangle, if any, is lost. With | |
| 412 prefix argument, the rectangle is actually killed, shifting remaining text." | |
| 413 (interactive "r\nP") | |
| 414 (setq picture-killed-rectangle (picture-snarf-rectangle start end killp))) | |
| 415 | |
| 416 (defun picture-clear-rectangle-to-register (start end register &optional killp) | |
| 417 "Clear rectangle delineated by point and mark into REGISTER. | |
| 418 The rectangle is saved in REGISTER and replaced with whitespace. With | |
| 419 prefix argument, the rectangle is actually killed, shifting remaining text." | |
| 420 (interactive "r\ncRectangle to register: \nP") | |
| 421 (set-register register (picture-snarf-rectangle start end killp))) | |
| 422 | |
| 423 (defun picture-snarf-rectangle (start end &optional killp) | |
| 424 (let ((column (current-column)) | |
| 425 (indent-tabs-mode nil)) | |
| 426 (prog1 (save-excursion | |
| 427 (if killp | |
| 428 (delete-extract-rectangle start end) | |
| 429 (prog1 (extract-rectangle start end) | |
| 430 (clear-rectangle start end)))) | |
| 431 (move-to-column-force column) | |
| 432 ;; XEmacs addition: | |
| 433 (setq zmacs-region-stays nil)))) | |
| 434 | |
| 435 (defun picture-yank-rectangle (&optional insertp) | |
| 436 "Overlay rectangle saved by \\[picture-clear-rectangle] | |
| 437 The rectangle is positioned with upper left corner at point, overwriting | |
| 438 existing text. With prefix argument, the rectangle is inserted instead, | |
| 439 shifting existing text. Leaves mark at one corner of rectangle and | |
| 440 point at the other (diagonally opposed) corner." | |
| 441 (interactive "P") | |
| 442 (if (not (consp picture-killed-rectangle)) | |
| 443 (error "No rectangle saved.") | |
| 444 (picture-insert-rectangle picture-killed-rectangle insertp))) | |
| 445 | |
| 446 (defun picture-yank-at-click (click arg) | |
| 447 "Insert the last killed rectangle at the position clicked on. | |
| 448 Also move point to one end of the text thus inserted (normally the end). | |
| 449 Prefix arguments are interpreted as with \\[yank]. | |
| 450 If `mouse-yank-at-point' is non-nil, insert at point | |
| 451 regardless of where you click." | |
| 452 (interactive "e\nP") | |
| 453 (or mouse-yank-at-point (mouse-set-point click)) | |
| 454 (picture-yank-rectangle arg)) | |
| 455 | |
| 456 (defun picture-yank-rectangle-from-register (register &optional insertp) | |
| 457 "Overlay rectangle saved in REGISTER. | |
| 458 The rectangle is positioned with upper left corner at point, overwriting | |
| 459 existing text. With prefix argument, the rectangle is | |
| 460 inserted instead, shifting existing text. Leaves mark at one corner | |
| 461 of rectangle and point at the other (diagonally opposed) corner." | |
| 462 (interactive "cRectangle from register: \nP") | |
| 463 (let ((rectangle (get-register register))) | |
| 464 (if (not (consp rectangle)) | |
| 465 (error "Register %c does not contain a rectangle." register) | |
| 466 (picture-insert-rectangle rectangle insertp)))) | |
| 467 | |
| 468 (defun picture-insert-rectangle (rectangle &optional insertp) | |
| 469 "Overlay RECTANGLE with upper left corner at point. | |
| 470 Optional argument INSERTP, if non-nil causes RECTANGLE to be inserted. | |
| 471 Leaves the region surrounding the rectangle." | |
| 472 (let ((indent-tabs-mode nil)) | |
| 473 (if (not insertp) | |
| 474 (save-excursion | |
| 475 (delete-rectangle (point) | |
| 476 (progn | |
| 477 (picture-forward-column (length (car rectangle))) | |
| 478 (picture-move-down (1- (length rectangle))) | |
| 479 (point))))) | |
| 480 (push-mark) | |
| 481 (insert-rectangle rectangle))) | |
| 482 | |
| 483 | |
| 484 ;; Picture Keymap, entry and exit points. | |
| 485 | |
| 486 (defconst picture-mode-map nil) | |
| 487 | |
| 488 (defun picture-substitute (oldfun newfun) | |
| 489 (substitute-key-definition oldfun newfun picture-mode-map global-map)) | |
| 490 | |
| 491 (if (not picture-mode-map) | |
| 492 (progn | |
| 493 (setq picture-mode-map (make-keymap 'picture-mode-map)) | |
| 494 (picture-substitute 'self-insert-command 'picture-self-insert) | |
| 495 (picture-substitute 'forward-char 'picture-forward-column) | |
| 496 (picture-substitute 'backward-char 'picture-backward-column) | |
| 497 (picture-substitute 'delete-char 'picture-clear-column) | |
| 498 ;; There are two possibilities for what is normally on DEL. | |
| 499 (picture-substitute 'backward-delete-char-untabify 'picture-backward-clear-column) | |
| 500 (picture-substitute 'delete-backward-char 'picture-backward-clear-column) | |
| 501 (picture-substitute 'kill-line 'picture-clear-line) | |
| 502 (picture-substitute 'open-line 'picture-open-line) | |
| 503 (picture-substitute 'newline 'picture-newline) | |
| 504 (picture-substitute 'newline-and-indent 'picture-duplicate-line) | |
| 505 (picture-substitute 'next-line 'picture-move-down) | |
| 506 (picture-substitute 'previous-line 'picture-move-up) | |
| 507 (picture-substitute 'beginning-of-line 'picture-beginning-of-line) | |
| 508 (picture-substitute 'end-of-line 'picture-end-of-line) | |
| 509 | |
| 510 (define-key picture-mode-map "\C-c\C-d" 'delete-char) | |
| 511 (define-key picture-mode-map "\e\t" 'picture-toggle-tab-state) | |
| 512 (define-key picture-mode-map "\t" 'picture-tab) | |
| 513 (define-key picture-mode-map "\e\t" 'picture-tab-search) | |
| 514 (define-key picture-mode-map "\C-c\t" 'picture-set-tab-stops) | |
| 515 (define-key picture-mode-map "\C-c\C-k" 'picture-clear-rectangle) | |
| 516 (define-key picture-mode-map "\C-c\C-w" 'picture-clear-rectangle-to-register) | |
| 517 (define-key picture-mode-map "\C-c\C-y" 'picture-yank-rectangle) | |
| 518 (define-key picture-mode-map "\C-c\C-x" 'picture-yank-rectangle-from-register) | |
| 519 (define-key picture-mode-map "\C-c\C-c" 'picture-mode-exit) | |
| 520 (define-key picture-mode-map "\C-c\C-f" 'picture-motion) | |
| 521 (define-key picture-mode-map "\C-c\C-b" 'picture-motion-reverse) | |
| 522 (define-key picture-mode-map "\C-c<" 'picture-movement-left) | |
| 523 (define-key picture-mode-map "\C-c>" 'picture-movement-right) | |
| 524 (define-key picture-mode-map "\C-c^" 'picture-movement-up) | |
| 525 (define-key picture-mode-map "\C-c." 'picture-movement-down) | |
| 526 (define-key picture-mode-map "\C-c`" 'picture-movement-nw) | |
| 527 (define-key picture-mode-map "\C-c'" 'picture-movement-ne) | |
| 528 (define-key picture-mode-map "\C-c/" 'picture-movement-sw) | |
| 529 (define-key picture-mode-map "\C-c\\" 'picture-movement-se))) | |
| 530 | |
| 531 (defvar picture-mode-hook nil | |
| 532 "If non-nil, its value is called on entry to Picture mode. | |
| 533 Picture mode is invoked by the command \\[picture-mode].") | |
| 534 | |
| 535 (defvar picture-mode-old-local-map) | |
| 536 (defvar picture-mode-old-mode-name) | |
| 537 (defvar picture-mode-old-major-mode) | |
| 538 (defvar picture-mode-old-truncate-lines) | |
| 539 | |
| 540 ;;;###autoload | |
| 541 (defun picture-mode () | |
| 542 "Switch to Picture mode, in which a quarter-plane screen model is used. | |
| 543 Printing characters replace instead of inserting themselves with motion | |
| 544 afterwards settable by these commands: | |
| 545 C-c < Move left after insertion. | |
| 546 C-c > Move right after insertion. | |
| 547 C-c ^ Move up after insertion. | |
| 548 C-c . Move down after insertion. | |
| 549 C-c ` Move northwest (nw) after insertion. | |
| 550 C-c ' Move northeast (ne) after insertion. | |
| 551 C-c / Move southwest (sw) after insertion. | |
| 552 C-c \\ Move southeast (se) after insertion. | |
| 553 The current direction is displayed in the modeline. The initial | |
| 554 direction is right. Whitespace is inserted and tabs are changed to | |
| 555 spaces when required by movement. You can move around in the buffer | |
| 556 with these commands: | |
| 557 \\[picture-move-down] Move vertically to SAME column in previous line. | |
| 558 \\[picture-move-up] Move vertically to SAME column in next line. | |
| 559 \\[picture-end-of-line] Move to column following last non-whitespace character. | |
| 560 \\[picture-forward-column] Move right inserting spaces if required. | |
| 561 \\[picture-backward-column] Move left changing tabs to spaces if required. | |
| 562 C-c C-f Move in direction of current picture motion. | |
| 563 C-c C-b Move in opposite direction of current picture motion. | |
| 564 Return Move to beginning of next line. | |
| 565 You can edit tabular text with these commands: | |
| 566 M-Tab Move to column beneath (or at) next interesting character. | |
| 567 `Indents' relative to a previous line. | |
| 568 Tab Move to next stop in tab stop list. | |
| 569 C-c Tab Set tab stops according to context of this line. | |
| 570 With ARG resets tab stops to default (global) value. | |
| 571 See also documentation of variable picture-tab-chars | |
| 572 which defines \"interesting character\". You can manually | |
| 573 change the tab stop list with command \\[edit-tab-stops]. | |
| 574 You can manipulate text with these commands: | |
| 575 C-d Clear (replace) ARG columns after point without moving. | |
| 576 C-c C-d Delete char at point - the command normally assigned to C-d. | |
| 577 \\[picture-backward-clear-column] Clear (replace) ARG columns before point, moving back over them. | |
| 578 \\[picture-clear-line] Clear ARG lines, advancing over them. The cleared | |
| 579 text is saved in the kill ring. | |
| 580 \\[picture-open-line] Open blank line(s) beneath current line. | |
| 581 You can manipulate rectangles with these commands: | |
| 582 C-c C-k Clear (or kill) a rectangle and save it. | |
| 583 C-c C-w Like C-c C-k except rectangle is saved in named register. | |
| 584 C-c C-y Overlay (or insert) currently saved rectangle at point. | |
| 585 C-c C-x Like C-c C-y except rectangle is taken from named register. | |
| 586 \\[copy-rectangle-to-register] Copies a rectangle to a register. | |
| 771 | 587 \\[undo] Can undo effects of rectangle overlay commands |
| 588 if invoked soon enough. | |
| 219 | 589 You can return to the previous mode with: |
| 590 C-c C-c Which also strips trailing whitespace from every line. | |
| 591 Stripping is suppressed by supplying an argument. | |
| 592 | |
| 593 Entry to this mode calls the value of picture-mode-hook if non-nil. | |
| 594 | |
| 595 Note that Picture mode commands will work outside of Picture mode, but | |
| 596 they are not defaultly assigned to keys." | |
| 597 (interactive) | |
| 598 (if (eq major-mode 'picture-mode) | |
| 599 (error "You are already editing a picture.") | |
| 600 (make-local-variable 'picture-mode-old-local-map) | |
| 601 (setq picture-mode-old-local-map (current-local-map)) | |
| 602 (use-local-map picture-mode-map) | |
| 603 (make-local-variable 'picture-mode-old-mode-name) | |
| 604 (setq picture-mode-old-mode-name mode-name) | |
| 605 (make-local-variable 'picture-mode-old-major-mode) | |
| 606 (setq picture-mode-old-major-mode major-mode) | |
| 607 (setq major-mode 'picture-mode) | |
| 608 (make-local-variable 'picture-killed-rectangle) | |
| 609 (setq picture-killed-rectangle nil) | |
| 610 (make-local-variable 'tab-stop-list) | |
| 611 (setq tab-stop-list (default-value 'tab-stop-list)) | |
| 612 (make-local-variable 'picture-tab-chars) | |
| 613 (setq picture-tab-chars (default-value 'picture-tab-chars)) | |
| 614 (make-local-variable 'picture-vertical-step) | |
| 615 (make-local-variable 'picture-horizontal-step) | |
| 616 (make-local-variable 'picture-mode-old-truncate-lines) | |
| 617 (setq picture-mode-old-truncate-lines truncate-lines) | |
| 618 (setq truncate-lines t) | |
| 619 | |
| 620 ;; XEmacs addition: | |
| 621 (make-local-variable 'mouse-track-rectangle-p) | |
| 622 (setq mouse-track-rectangle-p t) | |
| 623 | |
| 624 (picture-set-motion 0 1) | |
| 625 | |
| 626 ;; edit-picture-hook is what we used to run, picture-mode-hook is in doc. | |
| 627 (run-hooks 'edit-picture-hook 'picture-mode-hook) | |
| 628 (message | |
| 629 (substitute-command-keys | |
| 630 "Type \\[picture-mode-exit] in this buffer to return it to %s mode.") | |
| 631 picture-mode-old-mode-name))) | |
| 632 | |
| 633 ;;;###autoload | |
| 634 (defalias 'edit-picture 'picture-mode) | |
| 635 | |
| 636 (defun picture-mode-exit (&optional nostrip) | |
| 637 "Undo picture-mode and return to previous major mode. | |
| 638 With no argument strips whitespace from end of every line in Picture buffer | |
| 639 otherwise just return to previous mode." | |
| 640 (interactive "P") | |
| 641 (if (not (eq major-mode 'picture-mode)) | |
| 642 (error "You aren't editing a Picture.") | |
| 643 (if (not nostrip) (picture-clean)) | |
| 644 (setq mode-name picture-mode-old-mode-name) | |
| 645 (use-local-map picture-mode-old-local-map) | |
| 646 (setq major-mode picture-mode-old-major-mode) | |
| 647 (kill-local-variable 'tab-stop-list) | |
| 648 (setq truncate-lines picture-mode-old-truncate-lines) | |
| 649 ;; XEmacs change/addition: | |
| 650 (kill-local-variable 'mouse-track-rectangle-p) | |
| 651 (redraw-modeline))) | |
| 652 | |
| 653 (defun picture-clean () | |
| 654 "Eliminate whitespace at ends of lines." | |
| 655 (save-excursion | |
| 656 (goto-char (point-min)) | |
| 657 (while (re-search-forward "[ \t][ \t]*$" nil t) | |
| 658 (delete-region (match-beginning 0) (point))))) | |
| 659 | |
| 660 (provide 'picture) | |
| 661 | |
| 662 ;;; picture.el ends here |