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7bd27aed | 1 | ;;; strokes.el --- control Emacs through mouse strokes |
aea01cd7 | 2 | |
0d30b337 | 3 | ;; Copyright (C) 1997, 2000, 2002, 2003, 2004, |
aaef169d | 4 | ;; 2005, 2006 Free Software Foundation, Inc. |
aea01cd7 | 5 | |
41c86e21 | 6 | ;; Author: David Bakhash <cadet@alum.mit.edu> |
8f21d64e | 7 | ;; Maintainer: FSF |
aea01cd7 RS |
8 | ;; Keywords: lisp, mouse, extensions |
9 | ||
10 | ;; This file is part of GNU Emacs. | |
11 | ||
12 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
13 | ;; it under the terms of the GNU General Public License as published by | |
14 | ;; the Free Software Foundation; either version 2, or (at your option) | |
15 | ;; any later version. | |
16 | ||
17 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
18 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | ;; GNU General Public License for more details. | |
21 | ||
22 | ;; You should have received a copy of the GNU General Public License | |
23 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
086add15 LK |
24 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
25 | ;; Boston, MA 02110-1301, USA. | |
aea01cd7 RS |
26 | |
27 | ;;; Commentary: | |
28 | ||
29 | ;; This is the strokes package. It is intended to allow the user to | |
30 | ;; control Emacs by means of mouse strokes. Once strokes is loaded, you | |
31 | ;; can always get help be invoking `strokes-help': | |
32 | ||
33 | ;; > M-x strokes-help | |
34 | ||
35 | ;; and you can learn how to use the package. A mouse stroke, for now, | |
ded4da95 DL |
36 | ;; can be defined as holding the shift key and the middle button, for |
37 | ;; instance, and then moving the mouse in whatever pattern you wish, | |
38 | ;; which you have set Emacs to understand as mapping to a given | |
39 | ;; command. For example, you may wish the have a mouse stroke that | |
40 | ;; looks like a capital `C' which means `copy-region-as-kill'. Treat | |
41 | ;; strokes just like you do key bindings. For example, Emacs sets key | |
42 | ;; bindings globally with the `global-set-key' command. Likewise, you | |
43 | ;; can do | |
aea01cd7 | 44 | |
ded4da95 | 45 | ;; > M-x strokes-global-set-stroke |
aea01cd7 RS |
46 | |
47 | ;; to interactively program in a stroke. It would be wise to set the | |
48 | ;; first one to this very command, so that from then on, you invoke | |
ded4da95 DL |
49 | ;; `strokes-global-set-stroke' with a stroke. Likewise, there may |
50 | ;; eventually be a `strokes-local-set-stroke' command, also analogous | |
51 | ;; to `local-set-key'. | |
aea01cd7 RS |
52 | |
53 | ;; You can always unset the last stroke definition with the command | |
54 | ||
55 | ;; > M-x strokes-unset-last-stroke | |
56 | ||
57 | ;; and the last stroke that was added to `strokes-global-map' will be | |
58 | ;; removed. | |
59 | ||
60 | ;; Other analogies between strokes and key bindings are as follows: | |
61 | ||
62 | ;; 1) To describe a stroke binding, you can type | |
63 | ||
ded4da95 | 64 | ;; > M-x strokes-describe-stroke |
aea01cd7 RS |
65 | |
66 | ;; analogous to `describe-key'. It's also wise to have a stroke, | |
67 | ;; like an `h', for help, or a `?', mapped to `describe-stroke'. | |
68 | ||
69 | ;; 2) stroke bindings are set internally through the Lisp function | |
ded4da95 DL |
70 | ;; `strokes-define-stroke', similar to the `define-key' function. |
71 | ;; some examples for a 3x3 stroke grid would be | |
aea01cd7 | 72 | |
ded4da95 | 73 | ;; (strokes-define-stroke c-mode-stroke-map |
aea01cd7 RS |
74 | ;; '((0 . 0) (1 . 1) (2 . 2)) |
75 | ;; 'kill-region) | |
ded4da95 | 76 | ;; (strokes-define-stroke strokes-global-map |
aea01cd7 RS |
77 | ;; '((0 . 0) (0 . 1) (0 . 2) (1 . 2) (2 . 2)) |
78 | ;; 'list-buffers) | |
79 | ||
80 | ;; however, if you would probably just have the user enter in the | |
81 | ;; stroke interactively and then set the stroke to whatever he/she | |
99e0e3e2 | 82 | ;; entered. The Lisp function to interactively read a stroke is |
aea01cd7 RS |
83 | ;; `strokes-read-stroke'. This is especially helpful when you're |
84 | ;; on a fast computer that can handle a 9x9 stroke grid. | |
85 | ||
86 | ;; NOTE: only global stroke bindings are currently implemented, | |
87 | ;; however mode- and buffer-local stroke bindings may eventually | |
88 | ;; be implemented in a future version. | |
89 | ||
90 | ;; The important variables to be aware of for this package are listed | |
91 | ;; below. They can all be altered through the customizing package via | |
92 | ||
93 | ;; > M-x customize | |
94 | ||
95 | ;; and customizing the group named `strokes'. You can also read | |
96 | ;; documentation on the variables there. | |
97 | ||
98 | ;; `strokes-minimum-match-score' (determines the threshold of error that | |
0d0db51e | 99 | ;; makes a stroke acceptable or unacceptable. If your strokes aren't |
aea01cd7 RS |
100 | ;; matching, then you should raise this variable. |
101 | ||
102 | ;; `strokes-grid-resolution' (determines the grid dimensions that you use | |
103 | ;; when defining/reading strokes. The finer the grid your computer can | |
104 | ;; handle, the more you can do, but even a 3x3 grid is pretty cool.) | |
a81b56d5 | 105 | ;; The default value (9) should be fine for most decent computers. |
aea01cd7 RS |
106 | ;; NOTE: This variable should not be set to a number less than 3. |
107 | ||
108 | ;; `strokes-display-strokes-buffer' will allow you to hide the strokes | |
109 | ;; buffer when doing simple strokes. This is a speedup for slow | |
110 | ;; computers as well as people who don't want to see their strokes. | |
111 | ||
112 | ;; If you find that your mouse is accelerating too fast, you can | |
ded4da95 | 113 | ;; execute an X command to slow it down. A good possibility is |
aea01cd7 RS |
114 | |
115 | ;; % xset m 5/4 8 | |
116 | ||
117 | ;; which seems, heuristically, to work okay, without much disruption. | |
118 | ||
119 | ;; Whenever you load in the strokes package, you will be able to save | |
120 | ;; what you've done upon exiting Emacs. You can also do | |
121 | ||
ded4da95 | 122 | ;; > M-x strokes-prompt-user-save-strokes |
aea01cd7 RS |
123 | |
124 | ;; and it will save your strokes in ~/.strokes, or you may wish to change | |
125 | ;; this by setting the variable `strokes-file'. | |
126 | ||
127 | ;; Note that internally, all of the routines that are part of this | |
128 | ;; package are able to deal with complex strokes, as they are a superset | |
129 | ;; of simple strokes. However, the default of this package will map | |
ded4da95 DL |
130 | ;; S-mouse-2 to the command `strokes-do-stroke', and M-mouse-2 to |
131 | ;; `strokes-do-complex-stroke'. Complex strokes are terminated | |
132 | ;; with mouse button 3. | |
aea01cd7 | 133 | |
ded4da95 | 134 | ;; You can also toggle between strokes mode by simple typing |
aea01cd7 RS |
135 | |
136 | ;; > M-x strokes-mode | |
137 | ||
ded4da95 DL |
138 | ;; I hope that, with the help of others, this package will be useful |
139 | ;; in entering in pictographic-like language text using the mouse | |
140 | ;; (i.e. Korean). Japanese and Chinese are a bit trickier, but I'm | |
141 | ;; sure that with help it can be done. The next version will allow | |
142 | ;; the user to enter strokes which "remove the pencil from the paper" | |
143 | ;; so to speak, so one character can have multiple strokes. | |
aea01cd7 RS |
144 | |
145 | ;; You can read more about strokes at: | |
146 | ||
147 | ;; http://www.mit.edu/people/cadet/strokes-help.html | |
148 | ||
149 | ;; If you're interested in using strokes for writing English into Emacs | |
150 | ;; using strokes, then you'll want to read about it on the web page above | |
151 | ;; or just download from http://www.mit.edu/people/cadet/strokes-abc.el, | |
152 | ;; which is nothing but a file with some helper commands for inserting | |
153 | ;; alphanumerics and punctuation. | |
154 | ||
0d0db51e DL |
155 | ;; Great thanks to Rob Ristroph for his generosity in letting me use |
156 | ;; his PC to develop this, Jason Johnson for his help in algorithms, | |
157 | ;; Euna Kim for her help in Korean, and massive thanks to the helpful | |
158 | ;; guys on the help instance on athena (zeno, jered, amu, gsstark, | |
159 | ;; ghudson, etc) Special thanks to Steve Baur, Kyle Jones, and Hrvoje | |
160 | ;; Niksic for all their help. And special thanks to Dave Gillespie | |
161 | ;; for all the elisp help--he is responsible for helping me use the cl | |
162 | ;; macros at (near) max speed. | |
aea01cd7 RS |
163 | |
164 | ;; Tasks: (what I'm getting ready for future version)... | |
ded4da95 | 165 | ;; 2) use 'strokes-read-complex-stroke for Korean, etc. |
aea01cd7 | 166 | ;; 4) buffer-local 'strokes-local-map, and mode-stroke-maps would be nice |
aea01cd7 RS |
167 | ;; 6) add some hooks, like `strokes-read-stroke-hook' |
168 | ;; 7) See what people think of the factory settings. Should I change | |
169 | ;; them? They're all pretty arbitrary in a way. I guess they | |
170 | ;; should be minimal, but computers are getting lots faster, and | |
171 | ;; if I choose the defaults too conservatively, then strokes will | |
0d0db51e | 172 | ;; surely disappoint some people on decent machines (until they |
aea01cd7 RS |
173 | ;; figure out M-x customize). I need feedback. |
174 | ;; Other: I always have the most beta version of strokes, so if you | |
175 | ;; want it just let me know. | |
176 | ||
f73c072c DL |
177 | ;; Fixme: Use pbm instead of xpm for pixmaps to work generally. |
178 | ||
aea01cd7 RS |
179 | ;;; Code: |
180 | ||
181 | ;;; Requirements and provisions... | |
182 | ||
aea01cd7 | 183 | (autoload 'mail-position-on-field "sendmail") |
0d0db51e | 184 | (eval-when-compile (require 'cl)) |
aea01cd7 RS |
185 | |
186 | ;;; Constants... | |
187 | ||
0d0db51e | 188 | (defconst strokes-lift :strokes-lift |
aea01cd7 | 189 | "Symbol representing a stroke lift event for complex strokes. |
0d0db51e DL |
190 | Complex strokes are those which contain two or more simple strokes.") |
191 | ||
192 | (defconst strokes-xpm-header "/* XPM */ | |
193 | static char * stroke_xpm[] = { | |
194 | /* width height ncolors cpp [x_hot y_hot] */ | |
195 | \"33 33 9 1 26 23\", | |
196 | /* colors */ | |
197 | \" c none s none\", | |
198 | \"* c #000000 s foreground\", | |
199 | \"R c #FFFF00000000\", | |
200 | \"O c #FFFF80000000\", | |
201 | \"Y c #FFFFFFFF0000\", | |
202 | \"G c #0000FFFF0000\", | |
203 | \"B c #00000000FFFF\", | |
204 | \"P c #FFFF0000FFFF\", | |
205 | \". c #45458B8B0000\", | |
206 | /* pixels */\n" | |
ded4da95 | 207 | "The header to all xpm buffers created by strokes.") |
aea01cd7 RS |
208 | |
209 | ;;; user variables... | |
210 | ||
211 | (defgroup strokes nil | |
61bf4252 | 212 | "Control Emacs through mouse strokes." |
ded4da95 | 213 | :link '(emacs-commentary-link "strokes") |
0d0db51e | 214 | :link '(url-link "http://www.mit.edu/people/cadet/strokes-help.html") |
aea01cd7 RS |
215 | :group 'mouse) |
216 | ||
217 | (defcustom strokes-modeline-string " Strokes" | |
ded4da95 | 218 | "*Modeline identification when Strokes mode is on \(default is \" Strokes\"\)." |
aea01cd7 RS |
219 | :type 'string |
220 | :group 'strokes) | |
221 | ||
222 | (defcustom strokes-character ?@ | |
223 | "*Character used when drawing strokes in the strokes buffer. | |
0d0db51e | 224 | \(The default is `@', which works well.\)" |
aea01cd7 RS |
225 | :type 'character |
226 | :group 'strokes) | |
227 | ||
228 | (defcustom strokes-minimum-match-score 1000 | |
229 | "*Minimum score for a stroke to be considered a possible match. | |
0d0db51e | 230 | Setting this variable to 0 would require a perfectly precise match. |
aea01cd7 RS |
231 | The default value is 1000, but it's mostly dependent on how precisely |
232 | you manage to replicate your user-defined strokes. It also depends on | |
233 | the value of `strokes-grid-resolution', since a higher grid resolution | |
234 | will correspond to more sample points, and thus more distance | |
235 | measurements. Usually, this is not a problem since you first set | |
236 | `strokes-grid-resolution' based on what your computer seems to be able | |
ded4da95 | 237 | to handle (though the defaults are usually more than sufficient), and |
aea01cd7 RS |
238 | then you can set `strokes-minimum-match-score' to something that works |
239 | for you. The only purpose of this variable is to insure that if you | |
240 | do a bogus stroke that really doesn't match any of the predefined | |
241 | ones, then strokes should NOT pick the one that came closest." | |
242 | :type 'integer | |
243 | :group 'strokes) | |
244 | ||
245 | (defcustom strokes-grid-resolution 9 | |
246 | "*Integer defining dimensions of the stroke grid. | |
69c3280d | 247 | The grid is a square grid, where `strokes-grid-resolution' defaults to |
aea01cd7 | 248 | `9', making a 9x9 grid whose coordinates go from (0 . 0) on the top |
69c3280d | 249 | left to ((strokes-grid-resolution - 1) . (strokes-grid-resolution - 1)) |
aea01cd7 RS |
250 | on the bottom right. The greater the resolution, the more intricate |
251 | your strokes can be. | |
252 | NOTE: This variable should be odd and MUST NOT be less than 3 and need | |
253 | not be greater than 33, which is the resolution of the pixmaps. | |
254 | WARNING: Changing the value of this variable will gravely affect the | |
255 | strokes you have already programmed in. You should try to | |
256 | figure out what it should be based on your needs and on how | |
257 | quick the particular platform(s) you're operating on, and | |
258 | only then start programming in your custom strokes." | |
259 | :type 'integer | |
260 | :group 'strokes) | |
261 | ||
364ce449 | 262 | (defcustom strokes-file (convert-standard-filename "~/.strokes") |
69c3280d | 263 | "*File containing saved strokes for Strokes mode (default is ~/.strokes)." |
aea01cd7 RS |
264 | :type 'file |
265 | :group 'strokes) | |
266 | ||
ded4da95 DL |
267 | (defvar strokes-buffer-name " *strokes*" |
268 | "The name of the buffer that the strokes take place in.") | |
aea01cd7 RS |
269 | |
270 | (defcustom strokes-use-strokes-buffer t | |
271 | "*If non-nil, the strokes buffer is used and strokes are displayed. | |
272 | If nil, strokes will be read the same, however the user will not be | |
273 | able to see the strokes. This be helpful for people who don't like | |
274 | the delay in switching to the strokes buffer." | |
275 | :type 'boolean | |
276 | :group 'strokes) | |
277 | ||
aea01cd7 RS |
278 | ;;; internal variables... |
279 | ||
aea01cd7 RS |
280 | (defvar strokes-window-configuration nil |
281 | "The special window configuration used when entering strokes. | |
282 | This is set properly in the function `strokes-update-window-configuration'.") | |
283 | ||
284 | (defvar strokes-last-stroke nil | |
285 | "Last stroke entered by the user. | |
286 | Its value gets set every time the function | |
287 | `strokes-fill-stroke' gets called, | |
69c3280d | 288 | since that is the best time to set the variable.") |
aea01cd7 RS |
289 | |
290 | (defvar strokes-global-map '() | |
291 | "Association list of strokes and their definitions. | |
292 | Each entry is (STROKE . COMMAND) where STROKE is itself a list of | |
293 | coordinates (X . Y) where X and Y are lists of positions on the | |
294 | normalized stroke grid, with the top left at (0 . 0). COMMAND is the | |
69c3280d | 295 | corresponding interactive function.") |
aea01cd7 RS |
296 | |
297 | (defvar strokes-load-hook nil | |
69c3280d | 298 | "Functions to be called when Strokes is loaded.") |
aea01cd7 | 299 | |
0d0db51e DL |
300 | ;;; ### NOT IMPLEMENTED YET ### |
301 | ;;(defvar edit-strokes-menu | |
302 | ;; '("Edit-Strokes" | |
303 | ;; ["Add stroke..." strokes-global-set-stroke t] | |
304 | ;; ["Delete stroke..." strokes-edit-delete-stroke t] | |
305 | ;; ["Change stroke" strokes-smaller t] | |
306 | ;; ["Change definition" strokes-larger t] | |
307 | ;; ["[Re]List Strokes chronologically" strokes-list-strokes t] | |
308 | ;; ["[Re]List Strokes alphabetically" strokes-list-strokes t] | |
309 | ;; ["Quit" strokes-edit-quit t] | |
310 | ;; )) | |
311 | ||
aea01cd7 RS |
312 | ;;; Macros... |
313 | ||
ded4da95 DL |
314 | ;; unused |
315 | ;; (defmacro strokes-while-inhibiting-garbage-collector (&rest forms) | |
316 | ;; "Execute FORMS without interference from the garbage collector." | |
317 | ;; `(let ((gc-cons-threshold 134217727)) | |
318 | ;; ,@forms)) | |
0d0db51e | 319 | |
aea01cd7 RS |
320 | (defsubst strokes-click-p (stroke) |
321 | "Non-nil if STROKE is really click." | |
7bd27aed | 322 | (< (length stroke) 2)) |
aea01cd7 RS |
323 | |
324 | ;;; old, but worked pretty good (just in case)... | |
325 | ;;(defmacro strokes-define-stroke (stroke-map stroke def) | |
326 | ;; "Add STROKE to STROKE-MAP alist with given command DEF" | |
7bd27aed | 327 | ;; (list 'if (list '< (list 'length stroke) 2) |
aea01cd7 RS |
328 | ;; (list 'error |
329 | ;; "That's a click, not a stroke. See `strokes-click-command'") | |
330 | ;; (list 'setq stroke-map (list 'cons (list 'cons stroke def) | |
331 | ;; (list 'remassoc stroke stroke-map))))) | |
332 | ||
333 | (defsubst strokes-remassoc (key list) | |
0d0db51e DL |
334 | (let (elt) |
335 | (while (setq elt (assoc key list)) | |
336 | (setq list (delete elt list)))) | |
337 | list) | |
aea01cd7 RS |
338 | |
339 | (defmacro strokes-define-stroke (stroke-map stroke def) | |
340 | "Add STROKE to STROKE-MAP alist with given command DEF." | |
341 | `(if (strokes-click-p ,stroke) | |
ded4da95 | 342 | (error "That's a click, not a stroke") |
aea01cd7 RS |
343 | (setq ,stroke-map (cons (cons ,stroke ,def) |
344 | (strokes-remassoc ,stroke ,stroke-map))))) | |
345 | ||
aea01cd7 | 346 | (defsubst strokes-square (x) |
ded4da95 | 347 | "Return the square of the number X." |
aea01cd7 RS |
348 | (* x x)) |
349 | ||
350 | (defsubst strokes-distance-squared (p1 p2) | |
351 | "Gets the distance (squared) between to points P1 and P2. | |
352 | P1 and P2 are cons cells in the form (X . Y)." | |
353 | (let ((x1 (car p1)) | |
354 | (y1 (cdr p1)) | |
355 | (x2 (car p2)) | |
356 | (y2 (cdr p2))) | |
357 | (+ (strokes-square (- x2 x1)) | |
358 | (strokes-square (- y2 y1))))) | |
359 | ||
aea01cd7 RS |
360 | ;;; Functions... |
361 | ||
362 | (defsubst strokes-mouse-event-p (event) | |
0d0db51e DL |
363 | (and (consp event) (symbolp (car event)) |
364 | (or (eq (car event) 'mouse-movement) | |
365 | (memq 'click (get (car event) 'event-symbol-elements)) | |
366 | (memq 'down (get (car event) 'event-symbol-elements)) | |
367 | (memq 'drag (get (car event) 'event-symbol-elements))))) | |
368 | ||
369 | (defsubst strokes-button-press-event-p (event) | |
370 | (and (consp event) (symbolp (car event)) | |
371 | (memq 'down (get (car event) 'event-symbol-elements)))) | |
372 | ||
373 | (defsubst strokes-button-release-event-p (event) | |
374 | (and (consp event) (symbolp (car event)) | |
375 | (or (memq 'click (get (car event) 'event-symbol-elements)) | |
376 | (memq 'drag (get (car event) 'event-symbol-elements))))) | |
aea01cd7 RS |
377 | |
378 | (defun strokes-event-closest-point-1 (window &optional line) | |
379 | "Return position of start of line LINE in WINDOW. | |
380 | If LINE is nil, return the last position visible in WINDOW." | |
381 | (let* ((total (- (window-height window) | |
382 | (if (window-minibuffer-p window) | |
383 | 0 1))) | |
384 | (distance (or line total))) | |
385 | (save-excursion | |
386 | (goto-char (window-start window)) | |
387 | (if (= (vertical-motion distance) distance) | |
388 | (if (not line) | |
389 | (forward-char -1))) | |
390 | (point)))) | |
391 | ||
392 | (defun strokes-event-closest-point (event &optional start-window) | |
393 | "Return the nearest position to where EVENT ended its motion. | |
394 | This is computed for the window where EVENT's motion started, | |
ded4da95 | 395 | or for window START-WINDOW if that is specified." |
aea01cd7 RS |
396 | (or start-window (setq start-window (posn-window (event-start event)))) |
397 | (if (eq start-window (posn-window (event-end event))) | |
0d0db51e | 398 | (if (eq (posn-point (event-end event)) 'vertical-line) |
aea01cd7 RS |
399 | (strokes-event-closest-point-1 start-window |
400 | (cdr (posn-col-row (event-end event)))) | |
0d0db51e | 401 | (if (eq (posn-point (event-end event)) 'mode-line) |
aea01cd7 | 402 | (strokes-event-closest-point-1 start-window) |
0d0db51e | 403 | (posn-point (event-end event)))) |
aea01cd7 RS |
404 | ;; EVENT ended in some other window. |
405 | (let* ((end-w (posn-window (event-end event))) | |
406 | (end-w-top) | |
407 | (w-top (nth 1 (window-edges start-window)))) | |
408 | (setq end-w-top | |
409 | (if (windowp end-w) | |
410 | (nth 1 (window-edges end-w)) | |
411 | (/ (cdr (posn-x-y (event-end event))) | |
7bd27aed | 412 | (frame-char-height end-w)))) |
aea01cd7 RS |
413 | (if (>= end-w-top w-top) |
414 | (strokes-event-closest-point-1 start-window) | |
415 | (window-start start-window))))) | |
416 | ||
417 | (defun strokes-lift-p (object) | |
0d0db51e | 418 | "Return non-nil if OBJECT is a stroke-lift." |
aea01cd7 RS |
419 | (eq object strokes-lift)) |
420 | ||
421 | (defun strokes-unset-last-stroke () | |
422 | "Undo the last stroke definition." | |
423 | (interactive) | |
424 | (let ((command (cdar strokes-global-map))) | |
7bd27aed | 425 | (if (y-or-n-p |
ded4da95 | 426 | (format "Really delete last stroke definition, defined to `%s'? " |
aea01cd7 RS |
427 | command)) |
428 | (progn | |
429 | (setq strokes-global-map (cdr strokes-global-map)) | |
430 | (message "That stroke has been deleted")) | |
431 | (message "Nothing done")))) | |
432 | ||
433 | ;;;###autoload | |
434 | (defun strokes-global-set-stroke (stroke command) | |
435 | "Interactively give STROKE the global binding as COMMAND. | |
436 | Operated just like `global-set-key', except for strokes. | |
437 | COMMAND is a symbol naming an interactively-callable function. STROKE | |
438 | is a list of sampled positions on the stroke grid as described in the | |
99e0e3e2 EZ |
439 | documentation for the `strokes-define-stroke' function. |
440 | ||
441 | See also `strokes-global-set-stroke-string'." | |
aea01cd7 RS |
442 | (interactive |
443 | (list | |
444 | (and (or strokes-mode (strokes-mode t)) | |
445 | (strokes-read-complex-stroke | |
ded4da95 DL |
446 | "Draw with mouse button 1 (or 2). End with button 3...")) |
447 | (read-command "Command to map stroke to: "))) | |
aea01cd7 RS |
448 | (strokes-define-stroke strokes-global-map stroke command)) |
449 | ||
99e0e3e2 EZ |
450 | (defun strokes-global-set-stroke-string (stroke string) |
451 | "Interactively give STROKE the global binding as STRING. | |
452 | Operated just like `global-set-key', except for strokes. STRING | |
453 | is a string to be inserted by the stroke. STROKE is a list of | |
454 | sampled positions on the stroke grid as described in the | |
455 | documentation for the `strokes-define-stroke' function. | |
456 | ||
457 | Compare `strokes-global-set-stroke'." | |
458 | (interactive | |
459 | (list | |
460 | (and (or strokes-mode (strokes-mode t)) | |
461 | (strokes-read-complex-stroke | |
462 | "Draw with mouse button 1 (or 2). End with button 3...")) | |
463 | (read-string "String to map stroke to: "))) | |
464 | (strokes-define-stroke strokes-global-map stroke string)) | |
465 | ||
aea01cd7 RS |
466 | ;;(defun global-unset-stroke (stroke); FINISH THIS DEFUN! |
467 | ;; "delete all strokes matching STROKE from `strokes-global-map', | |
468 | ;; letting the user input | |
469 | ;; the stroke with the mouse" | |
470 | ;; (interactive | |
471 | ;; (list | |
472 | ;; (strokes-read-stroke "Enter the stroke you want to delete..."))) | |
473 | ;; (strokes-define-stroke 'strokes-global-map stroke command)) | |
474 | ||
475 | (defun strokes-get-grid-position (stroke-extent position &optional grid-resolution) | |
ded4da95 | 476 | "Map POSITION to a new grid position. |
69c3280d | 477 | Do so based on its STROKE-EXTENT and GRID-RESOLUTION. |
aea01cd7 RS |
478 | STROKE-EXTENT as a list \(\(XMIN . YMIN\) \(XMAX . YMAX\)\). |
479 | If POSITION is a `strokes-lift', then it is itself returned. | |
69c3280d | 480 | Optional GRID-RESOLUTION may be used in place of `strokes-grid-resolution'. |
ded4da95 | 481 | The grid is a square whose dimension is [0,GRID-RESOLUTION)." |
aea01cd7 RS |
482 | (cond ((consp position) ; actual pixel location |
483 | (let ((grid-resolution (or grid-resolution strokes-grid-resolution)) | |
484 | (x (car position)) | |
485 | (y (cdr position)) | |
486 | (xmin (caar stroke-extent)) | |
487 | (ymin (cdar stroke-extent)) | |
488 | ;; the `1+' is there to insure that the | |
489 | ;; formula evaluates correctly at the boundaries | |
0d0db51e DL |
490 | (xmax (1+ (car (cadr stroke-extent)))) |
491 | (ymax (1+ (cdr (cadr stroke-extent))))) | |
aea01cd7 RS |
492 | (cons (floor (* grid-resolution |
493 | (/ (float (- x xmin)) | |
494 | (- xmax xmin)))) | |
495 | (floor (* grid-resolution | |
496 | (/ (float (- y ymin)) | |
497 | (- ymax ymin))))))) | |
498 | ((strokes-lift-p position) ; stroke lift | |
499 | strokes-lift))) | |
500 | ||
aea01cd7 | 501 | (defun strokes-get-stroke-extent (pixel-positions) |
ded4da95 | 502 | "From a list of absolute PIXEL-POSITIONS, return absolute spatial extent. |
aea01cd7 RS |
503 | The return value is a list ((XMIN . YMIN) (XMAX . YMAX))." |
504 | (if pixel-positions | |
505 | (let ((xmin (caar pixel-positions)) | |
506 | (xmax (caar pixel-positions)) | |
507 | (ymin (cdar pixel-positions)) | |
508 | (ymax (cdar pixel-positions)) | |
509 | (rest (cdr pixel-positions))) | |
510 | (while rest | |
511 | (if (consp (car rest)) | |
512 | (let ((x (caar rest)) | |
513 | (y (cdar rest))) | |
514 | (if (< x xmin) | |
515 | (setq xmin x)) | |
516 | (if (> x xmax) | |
517 | (setq xmax x)) | |
518 | (if (< y ymin) | |
519 | (setq ymin y)) | |
520 | (if (> y ymax) | |
521 | (setq ymax y)))) | |
522 | (setq rest (cdr rest))) | |
523 | (let ((delta-x (- xmax xmin)) | |
524 | (delta-y (- ymax ymin))) | |
525 | (if (> delta-x delta-y) | |
526 | (setq ymin (- ymin | |
527 | (/ (- delta-x delta-y) | |
528 | 2)) | |
529 | ymax (+ ymax | |
530 | (/ (- delta-x delta-y) | |
531 | 2))) | |
532 | (setq xmin (- xmin | |
533 | (/ (- delta-y delta-x) | |
534 | 2)) | |
535 | xmax (+ xmax | |
536 | (/ (- delta-y delta-x) | |
537 | 2)))) | |
538 | (list (cons xmin ymin) | |
539 | (cons xmax ymax)))) | |
540 | nil)) | |
541 | ||
542 | (defun strokes-eliminate-consecutive-redundancies (entries) | |
ded4da95 | 543 | "Return a list with no consecutive redundant entries." |
aea01cd7 RS |
544 | ;; defun a grande vitesse grace a Dave G. |
545 | (loop for element on entries | |
546 | if (not (equal (car element) (cadr element))) | |
547 | collect (car element))) | |
548 | ;; (loop for element on entries | |
549 | ;; nconc (if (not (equal (car el) (cadr el))) | |
550 | ;; (list (car el))))) | |
551 | ;; yet another (orig) way of doing it... | |
552 | ;; (if entries | |
553 | ;; (let* ((current (car entries)) | |
554 | ;; (rest (cdr entries)) | |
555 | ;; (non-redundant-list (list current)) | |
556 | ;; (next nil)) | |
557 | ;; (while rest | |
558 | ;; (setq next (car rest)) | |
559 | ;; (if (equal current next) | |
560 | ;; (setq rest (cdr rest)) | |
561 | ;; (setq non-redundant-list (cons next non-redundant-list) | |
562 | ;; current next | |
563 | ;; rest (cdr rest)))) | |
564 | ;; (nreverse non-redundant-list)) | |
565 | ;; nil)) | |
566 | ||
567 | (defun strokes-renormalize-to-grid (positions &optional grid-resolution) | |
568 | "Map POSITIONS to a new grid whose dimensions are based on GRID-RESOLUTION. | |
569 | POSITIONS is a list of positions and stroke-lifts. | |
69c3280d | 570 | Optional GRID-RESOLUTION may be used in place of `strokes-grid-resolution'. |
ded4da95 | 571 | The grid is a square whose dimension is [0,GRID-RESOLUTION)." |
aea01cd7 RS |
572 | (or grid-resolution (setq grid-resolution strokes-grid-resolution)) |
573 | (let ((stroke-extent (strokes-get-stroke-extent positions))) | |
574 | (mapcar (function | |
575 | (lambda (pos) | |
576 | (strokes-get-grid-position stroke-extent pos grid-resolution))) | |
577 | positions))) | |
578 | ||
aea01cd7 RS |
579 | (defun strokes-fill-stroke (unfilled-stroke &optional force) |
580 | "Fill in missing grid locations in the list of UNFILLED-STROKE. | |
581 | If FORCE is non-nil, then fill the stroke even if it's `stroke-click'. | |
582 | NOTE: This is where the global variable `strokes-last-stroke' is set." | |
583 | (setq strokes-last-stroke ; this is global | |
584 | (if (and (strokes-click-p unfilled-stroke) | |
585 | (not force)) | |
586 | unfilled-stroke | |
587 | (loop for grid-locs on unfilled-stroke | |
588 | nconc (let* ((current (car grid-locs)) | |
589 | (current-is-a-point-p (consp current)) | |
590 | (next (cadr grid-locs)) | |
591 | (next-is-a-point-p (consp next)) | |
592 | (both-are-points-p (and current-is-a-point-p | |
593 | next-is-a-point-p)) | |
594 | (x1 (and current-is-a-point-p | |
595 | (car current))) | |
596 | (y1 (and current-is-a-point-p | |
597 | (cdr current))) | |
598 | (x2 (and next-is-a-point-p | |
599 | (car next))) | |
600 | (y2 (and next-is-a-point-p | |
601 | (cdr next))) | |
602 | (delta-x (and both-are-points-p | |
603 | (- x2 x1))) | |
604 | (delta-y (and both-are-points-p | |
605 | (- y2 y1))) | |
606 | (slope (and both-are-points-p | |
607 | (if (zerop delta-x) | |
608 | nil ; undefined vertical slope | |
609 | (/ (float delta-y) | |
610 | delta-x))))) | |
611 | (cond ((not both-are-points-p) | |
612 | (list current)) | |
ded4da95 | 613 | ((null slope) ; undefined vertical slope |
aea01cd7 RS |
614 | (if (>= delta-y 0) |
615 | (loop for y from y1 below y2 | |
616 | collect (cons x1 y)) | |
617 | (loop for y from y1 above y2 | |
618 | collect (cons x1 y)))) | |
619 | ((zerop slope) ; (= y1 y2) | |
620 | (if (>= delta-x 0) | |
621 | (loop for x from x1 below x2 | |
622 | collect (cons x y1)) | |
623 | (loop for x from x1 above x2 | |
624 | collect (cons x y1)))) | |
625 | ((>= (abs delta-x) (abs delta-y)) | |
626 | (if (> delta-x 0) | |
627 | (loop for x from x1 below x2 | |
628 | collect (cons x | |
629 | (+ y1 | |
630 | (round (* slope | |
631 | (- x x1)))))) | |
632 | (loop for x from x1 above x2 | |
633 | collect (cons x | |
634 | (+ y1 | |
635 | (round (* slope | |
636 | (- x x1)))))))) | |
637 | (t ; (< (abs delta-x) (abs delta-y)) | |
638 | (if (> delta-y 0) | |
639 | (loop for y from y1 below y2 | |
640 | collect (cons (+ x1 | |
641 | (round (/ (- y y1) | |
642 | slope))) | |
643 | y)) | |
644 | (loop for y from y1 above y2 | |
645 | collect (cons (+ x1 | |
646 | (round (/ (- y y1) | |
647 | slope))) | |
648 | y)))))))))) | |
649 | ||
650 | (defun strokes-rate-stroke (stroke1 stroke2) | |
ded4da95 | 651 | "Rates STROKE1 with STROKE2 and return a score based on a distance metric. |
aea01cd7 RS |
652 | Note: the rating is an error rating, and therefore, a return of 0 |
653 | represents a perfect match. Also note that the order of stroke | |
654 | arguments is order-independent for the algorithm used here." | |
655 | (if (and stroke1 stroke2) | |
656 | (let ((rest1 (cdr stroke1)) | |
657 | (rest2 (cdr stroke2)) | |
658 | (err (strokes-distance-squared (car stroke1) | |
659 | (car stroke2)))) | |
660 | (while (and rest1 rest2) | |
661 | (while (and (consp (car rest1)) | |
662 | (consp (car rest2))) | |
663 | (setq err (+ err | |
664 | (strokes-distance-squared (car rest1) | |
665 | (car rest2))) | |
666 | stroke1 rest1 | |
667 | stroke2 rest2 | |
668 | rest1 (cdr stroke1) | |
669 | rest2 (cdr stroke2))) | |
670 | (cond ((and (strokes-lift-p (car rest1)) | |
671 | (strokes-lift-p (car rest2))) | |
672 | (setq rest1 (cdr rest1) | |
673 | rest2 (cdr rest2))) | |
674 | ((strokes-lift-p (car rest2)) | |
675 | (while (consp (car rest1)) | |
676 | (setq err (+ err | |
677 | (strokes-distance-squared (car rest1) | |
678 | (car stroke2))) | |
679 | rest1 (cdr rest1)))) | |
680 | ((strokes-lift-p (car rest1)) | |
681 | (while (consp (car rest2)) | |
682 | (setq err (+ err | |
683 | (strokes-distance-squared (car stroke1) | |
684 | (car rest2))) | |
685 | rest2 (cdr rest2)))))) | |
686 | (if (null rest2) | |
687 | (while (consp (car rest1)) | |
688 | (setq err (+ err | |
689 | (strokes-distance-squared (car rest1) | |
690 | (car stroke2))) | |
691 | rest1 (cdr rest1)))) | |
692 | (if (null rest1) | |
693 | (while (consp (car rest2)) | |
694 | (setq err (+ err | |
695 | (strokes-distance-squared (car stroke1) | |
696 | (car rest2))) | |
697 | rest2 (cdr rest2)))) | |
698 | (if (or (strokes-lift-p (car rest1)) | |
699 | (strokes-lift-p (car rest2))) | |
700 | (setq err nil) | |
701 | err)) | |
702 | nil)) | |
703 | ||
704 | (defun strokes-match-stroke (stroke stroke-map) | |
ded4da95 | 705 | "Find the best matching command of STROKE in STROKE-MAP. |
aea01cd7 RS |
706 | Returns the corresponding match as (COMMAND . SCORE)." |
707 | (if (and stroke stroke-map) | |
708 | (let ((score (strokes-rate-stroke stroke (caar stroke-map))) | |
709 | (command (cdar stroke-map)) | |
710 | (map (cdr stroke-map))) | |
711 | (while map | |
712 | (let ((newscore (strokes-rate-stroke stroke (caar map)))) | |
713 | (if (or (and newscore score (< newscore score)) | |
714 | (and newscore (null score))) | |
715 | (setq score newscore | |
716 | command (cdar map))) | |
717 | (setq map (cdr map)))) | |
718 | (if score | |
719 | (cons command score) | |
720 | nil)) | |
721 | nil)) | |
722 | ||
723 | ;;;###autoload | |
724 | (defun strokes-read-stroke (&optional prompt event) | |
725 | "Read a simple stroke (interactively) and return the stroke. | |
726 | Optional PROMPT in minibuffer displays before and during stroke reading. | |
727 | This function will display the stroke interactively as it is being | |
728 | entered in the strokes buffer if the variable | |
729 | `strokes-use-strokes-buffer' is non-nil. | |
69c3280d | 730 | Optional EVENT is acceptable as the starting event of the stroke." |
aea01cd7 | 731 | (save-excursion |
7bd27aed RS |
732 | (let ((pix-locs nil) |
733 | (grid-locs nil) | |
734 | (safe-to-draw-p nil)) | |
735 | (if strokes-use-strokes-buffer | |
736 | ;; switch to the strokes buffer and | |
737 | ;; display the stroke as it's being read | |
738 | (save-window-excursion | |
739 | (set-window-configuration strokes-window-configuration) | |
740 | (when prompt | |
8a26c165 | 741 | (message "%s" prompt) |
7bd27aed | 742 | (setq event (read-event)) |
0d0db51e | 743 | (or (strokes-button-press-event-p event) |
7bd27aed RS |
744 | (error "You must draw with the mouse"))) |
745 | (unwind-protect | |
746 | (track-mouse | |
747 | (or event (setq event (read-event) | |
748 | safe-to-draw-p t)) | |
0d0db51e | 749 | (while (not (strokes-button-release-event-p event)) |
aea01cd7 RS |
750 | (if (strokes-mouse-event-p event) |
751 | (let ((point (strokes-event-closest-point event))) | |
7bd27aed RS |
752 | (if (and point safe-to-draw-p) |
753 | ;; we can draw that point | |
754 | (progn | |
755 | (goto-char point) | |
ded4da95 | 756 | (subst-char-in-region point (1+ point) |
61bf4252 | 757 | ?\s strokes-character)) |
7bd27aed RS |
758 | ;; otherwise, we can start drawing the next time... |
759 | (setq safe-to-draw-p t)) | |
0d0db51e | 760 | (push (cdr (mouse-pixel-position)) |
aea01cd7 | 761 | pix-locs))) |
7bd27aed | 762 | (setq event (read-event))))) |
aea01cd7 | 763 | ;; protected |
7bd27aed | 764 | ;; clean up strokes buffer and then bury it. |
aea01cd7 | 765 | (when (equal (buffer-name) strokes-buffer-name) |
ded4da95 | 766 | (subst-char-in-region (point-min) (point-max) |
61bf4252 | 767 | strokes-character ?\s) |
aea01cd7 | 768 | (goto-char (point-min)) |
7bd27aed RS |
769 | (bury-buffer)))) |
770 | ;; Otherwise, don't use strokes buffer and read stroke silently | |
771 | (when prompt | |
8a26c165 | 772 | (message "%s" prompt) |
7bd27aed | 773 | (setq event (read-event)) |
0d0db51e | 774 | (or (strokes-button-press-event-p event) |
7bd27aed RS |
775 | (error "You must draw with the mouse"))) |
776 | (track-mouse | |
777 | (or event (setq event (read-event))) | |
0d0db51e | 778 | (while (not (strokes-button-release-event-p event)) |
7bd27aed | 779 | (if (strokes-mouse-event-p event) |
0d0db51e | 780 | (push (cdr (mouse-pixel-position)) |
7bd27aed RS |
781 | pix-locs)) |
782 | (setq event (read-event)))) | |
783 | (setq grid-locs (strokes-renormalize-to-grid (nreverse pix-locs))) | |
ded4da95 DL |
784 | (strokes-fill-stroke |
785 | (strokes-eliminate-consecutive-redundancies grid-locs))))) | |
7bd27aed RS |
786 | |
787 | ;;;###autoload | |
788 | (defun strokes-read-complex-stroke (&optional prompt event) | |
789 | "Read a complex stroke (interactively) and return the stroke. | |
790 | Optional PROMPT in minibuffer displays before and during stroke reading. | |
791 | Note that a complex stroke allows the user to pen-up and pen-down. This | |
ded4da95 DL |
792 | is implemented by allowing the user to paint with button 1 or button 2 and |
793 | then complete the stroke with button 3. | |
69c3280d | 794 | Optional EVENT is acceptable as the starting event of the stroke." |
7bd27aed RS |
795 | (save-excursion |
796 | (save-window-excursion | |
797 | (set-window-configuration strokes-window-configuration) | |
798 | (let ((pix-locs nil) | |
799 | (grid-locs nil)) | |
800 | (if prompt | |
0d0db51e | 801 | (while (not (strokes-button-press-event-p event)) |
8a26c165 | 802 | (message "%s" prompt) |
7bd27aed RS |
803 | (setq event (read-event)))) |
804 | (unwind-protect | |
805 | (track-mouse | |
806 | (or event (setq event (read-event))) | |
0d0db51e DL |
807 | (while (not (and (strokes-button-press-event-p event) |
808 | (eq 'mouse-3 | |
809 | (car (get (car event) | |
810 | 'event-symbol-elements))))) | |
811 | (while (not (strokes-button-release-event-p event)) | |
7bd27aed RS |
812 | (if (strokes-mouse-event-p event) |
813 | (let ((point (strokes-event-closest-point event))) | |
814 | (when point | |
815 | (goto-char point) | |
ded4da95 | 816 | (subst-char-in-region point (1+ point) |
61bf4252 | 817 | ?\s strokes-character)) |
0d0db51e | 818 | (push (cdr (mouse-pixel-position)) |
7bd27aed RS |
819 | pix-locs))) |
820 | (setq event (read-event))) | |
821 | (push strokes-lift pix-locs) | |
0d0db51e | 822 | (while (not (strokes-button-press-event-p event)) |
7bd27aed RS |
823 | (setq event (read-event)))) |
824 | ;; ### KLUDGE! ### sit and wait | |
825 | ;; for some useless event to | |
826 | ;; happen to fix the minibuffer bug. | |
0d0db51e | 827 | (while (not (strokes-button-release-event-p (read-event)))) |
7bd27aed RS |
828 | (setq pix-locs (nreverse (cdr pix-locs)) |
829 | grid-locs (strokes-renormalize-to-grid pix-locs)) | |
830 | (strokes-fill-stroke | |
831 | (strokes-eliminate-consecutive-redundancies grid-locs))) | |
832 | ;; protected | |
833 | (when (equal (buffer-name) strokes-buffer-name) | |
ded4da95 | 834 | (subst-char-in-region (point-min) (point-max) |
61bf4252 | 835 | strokes-character ?\s) |
7bd27aed RS |
836 | (goto-char (point-min)) |
837 | (bury-buffer))))))) | |
aea01cd7 RS |
838 | |
839 | (defun strokes-execute-stroke (stroke) | |
840 | "Given STROKE, execute the command which corresponds to it. | |
841 | The command will be executed provided one exists for that stroke, | |
842 | based on the variable `strokes-minimum-match-score'. | |
843 | If no stroke matches, nothing is done and return value is nil." | |
844 | (let* ((match (strokes-match-stroke stroke strokes-global-map)) | |
845 | (command (car match)) | |
846 | (score (cdr match))) | |
ded4da95 | 847 | (cond ((and match (<= score strokes-minimum-match-score)) |
aea01cd7 RS |
848 | (message "%s" command) |
849 | (command-execute command)) | |
850 | ((null strokes-global-map) | |
851 | (if (file-exists-p strokes-file) | |
7bd27aed | 852 | (and (y-or-n-p |
aea01cd7 RS |
853 | (format "No strokes loaded. Load `%s'? " |
854 | strokes-file)) | |
855 | (strokes-load-user-strokes)) | |
ded4da95 | 856 | (error "No strokes defined; use `strokes-global-set-stroke'"))) |
aea01cd7 RS |
857 | (t |
858 | (error | |
859 | "No stroke matches; see variable `strokes-minimum-match-score'") | |
860 | nil)))) | |
861 | ||
862 | ;;;###autoload | |
863 | (defun strokes-do-stroke (event) | |
a81b56d5 | 864 | "Read a simple stroke from the user and then execute its command. |
aea01cd7 RS |
865 | This must be bound to a mouse event." |
866 | (interactive "e") | |
867 | (or strokes-mode (strokes-mode t)) | |
868 | (strokes-execute-stroke (strokes-read-stroke nil event))) | |
869 | ||
870 | ;;;###autoload | |
871 | (defun strokes-do-complex-stroke (event) | |
a81b56d5 | 872 | "Read a complex stroke from the user and then execute its command. |
aea01cd7 RS |
873 | This must be bound to a mouse event." |
874 | (interactive "e") | |
875 | (or strokes-mode (strokes-mode t)) | |
876 | (strokes-execute-stroke (strokes-read-complex-stroke nil event))) | |
877 | ||
878 | ;;;###autoload | |
879 | (defun strokes-describe-stroke (stroke) | |
880 | "Displays the command which STROKE maps to, reading STROKE interactively." | |
881 | (interactive | |
882 | (list | |
883 | (strokes-read-complex-stroke | |
ded4da95 | 884 | "Enter stroke to describe; end with button 3..."))) |
aea01cd7 | 885 | (let* ((match (strokes-match-stroke stroke strokes-global-map)) |
ded4da95 | 886 | (command (car match)) |
aea01cd7 | 887 | (score (cdr match))) |
ded4da95 DL |
888 | (if (and match |
889 | (<= score strokes-minimum-match-score)) | |
aea01cd7 RS |
890 | (message "That stroke maps to `%s'" command) |
891 | (message "That stroke is undefined")) | |
892 | (sleep-for 1))) ; helpful for recursive edits | |
893 | ||
aea01cd7 | 894 | ;;;###autoload |
7bd27aed | 895 | (defun strokes-help () |
69c3280d | 896 | "Get instruction on using the Strokes package." |
7bd27aed | 897 | (interactive) |
ded4da95 DL |
898 | (with-output-to-temp-buffer "*Help with Strokes*" |
899 | (princ | |
69c3280d JB |
900 | (substitute-command-keys |
901 | "This is help for the strokes package. | |
aea01cd7 | 902 | |
7bd27aed | 903 | ------------------------------------------------------------ |
aea01cd7 | 904 | |
7bd27aed | 905 | ** Strokes... |
aea01cd7 | 906 | |
7bd27aed RS |
907 | The strokes package allows you to define strokes, made with |
908 | the mouse or other pointer device, that Emacs can interpret as | |
909 | corresponding to commands, and then executes the commands. It does | |
910 | character recognition, so you don't have to worry about getting it | |
911 | right every time. | |
aea01cd7 | 912 | |
0d0db51e | 913 | Strokes also allows you to compose documents graphically. You can |
a81b56d5 | 914 | fully edit documents in Chinese, Japanese, etc. based on Emacs |
ded4da95 | 915 | strokes. Once you've done so, you can ASCII compress-and-encode them |
0d0db51e DL |
916 | and then safely save them for later use, send letters to friends |
917 | \(using Emacs, of course). Strokes will later decode these documents, | |
918 | extracting the strokes for editing use once again, so the editing | |
919 | cycle can continue. | |
920 | ||
7bd27aed RS |
921 | Strokes are easy to program and fun to use. To start strokes going, |
922 | you'll want to put the following line in your .emacs file as mentioned | |
923 | in the commentary to strokes.el. | |
aea01cd7 | 924 | |
7bd27aed RS |
925 | This will load strokes when and only when you start Emacs on a window |
926 | system, with a mouse or other pointer device defined. | |
aea01cd7 | 927 | |
7bd27aed | 928 | To toggle strokes-mode, you just do |
aea01cd7 | 929 | |
7bd27aed | 930 | > M-x strokes-mode |
aea01cd7 | 931 | |
0d0db51e | 932 | ** Strokes for controlling the behavior of Emacs... |
aea01cd7 | 933 | |
7bd27aed | 934 | When you're ready to start defining strokes, just use the command |
aea01cd7 | 935 | |
ded4da95 | 936 | > M-x strokes-global-set-stroke |
aea01cd7 | 937 | |
7bd27aed | 938 | You will see a ` *strokes*' buffer which is waiting for you to enter in |
ded4da95 DL |
939 | your stroke. When you enter in the stroke, you draw with button 1 or |
940 | button 2, and then end with button 3. Next, you enter in the command | |
7bd27aed RS |
941 | which will be executed when that stroke is invoked. Simple as that. |
942 | For now, try to define a stroke to copy a region. This is a popular | |
943 | edit command, so type | |
aea01cd7 | 944 | |
ded4da95 | 945 | > M-x strokes-global-set-stroke |
aea01cd7 | 946 | |
0d0db51e | 947 | Then, in the ` *strokes*' buffer, draw the letter `C' (for `copy') |
7bd27aed | 948 | and then, when it asks you to enter the command to map that to, type |
aea01cd7 | 949 | |
7bd27aed | 950 | > copy-region-as-kill |
aea01cd7 | 951 | |
7bd27aed | 952 | That's about as hard as it gets. |
ded4da95 | 953 | Remember: paint with button 1 or button 2 and then end with button 3. |
aea01cd7 | 954 | |
7bd27aed | 955 | If ever you want to know what a certain strokes maps to, then do |
aea01cd7 | 956 | |
ded4da95 | 957 | > M-x strokes-describe-stroke |
aea01cd7 | 958 | |
7bd27aed | 959 | and you can enter in any arbitrary stroke. Remember: The strokes |
0d0db51e | 960 | package lets you program in simple and complex (multi-lift) strokes. |
7bd27aed RS |
961 | The only difference is how you *invoke* the two. You will most likely |
962 | use simple strokes, as complex strokes were developed for | |
ded4da95 DL |
963 | Chinese/Japanese/Korean. So the shifted middle mouse button (S-mouse-2) will |
964 | invoke the command `strokes-do-stroke'. | |
aea01cd7 | 965 | |
7bd27aed RS |
966 | If ever you define a stroke which you don't like, then you can unset |
967 | it with the command | |
aea01cd7 | 968 | |
7bd27aed | 969 | > M-x strokes-unset-last-stroke |
aea01cd7 | 970 | |
0d0db51e DL |
971 | You can always get an idea of what your current strokes look like with |
972 | the command | |
973 | ||
974 | > M-x strokes-list-strokes | |
975 | ||
976 | Your strokes will be displayed in alphabetical order (based on command | |
977 | names) and the beginning of each simple stroke will be marked by a | |
978 | color dot. Since you may have several simple strokes in a complex | |
979 | stroke, the dot colors are arranged in the rainbow color sequence, | |
980 | `ROYGBIV'. If you want a listing of your strokes from most recent | |
981 | down, then use a prefix argument: | |
982 | ||
983 | > C-u M-x strokes-list-strokes | |
984 | ||
7bd27aed RS |
985 | Your strokes are stored as you enter them. They get saved in a file |
986 | called ~/.strokes, along with other strokes configuration variables. | |
987 | You can change this location by setting the variable `strokes-file'. | |
988 | You will be prompted to save them when you exit Emacs, or you can save | |
989 | them with | |
aea01cd7 | 990 | |
69c3280d | 991 | > M-x strokes-prompt-user-save-strokes |
aea01cd7 | 992 | |
7bd27aed RS |
993 | Your strokes get loaded automatically when you enable `strokes-mode'. |
994 | You can also load in your user-defined strokes with | |
aea01cd7 | 995 | |
ded4da95 | 996 | > M-x strokes-load-user-strokes |
aea01cd7 | 997 | |
0d0db51e DL |
998 | ** Strokes for pictographic editing... |
999 | ||
1000 | If you'd like to create graphical files with strokes, you'll have to | |
ded4da95 DL |
1001 | be running a version of Emacs with XPM support. You use the binding |
1002 | to `strokes-compose-complex-stroke' to start drawing your strokes. | |
1003 | These are just complex strokes, and thus continue drawing with mouse-1 | |
1004 | or mouse-2 and end with mouse-3. Then the stroke image gets inserted | |
1005 | into the buffer. You treat it somewhat like any other character, | |
1006 | which you can copy, paste, delete, move, etc. When all is done, you | |
1007 | may want to send the file, or save it. This is done with | |
0d0db51e DL |
1008 | |
1009 | > M-x strokes-encode-buffer | |
1010 | ||
1011 | Likewise, to decode the strokes from a strokes-encoded buffer you do | |
1012 | ||
1013 | > M-x strokes-decode-buffer | |
1014 | ||
7bd27aed | 1015 | ** A few more important things... |
aea01cd7 | 1016 | |
0d0db51e DL |
1017 | o The command `strokes-do-complex-stroke' is invoked with M-mouse-2, |
1018 | so that you can execute complex strokes (i.e. with more than one lift) | |
1019 | if preferred. | |
aea01cd7 | 1020 | |
7bd27aed RS |
1021 | o Strokes are a bit computer-dependent in that they depend somewhat on |
1022 | the speed of the computer you're working on. This means that you | |
1023 | may have to tweak some variables. You can read about them in the | |
ded4da95 | 1024 | commentary of `strokes.el'. Better to just use \\[apropos] and read their |
7bd27aed RS |
1025 | docstrings. All variables/functions start with `strokes'. The one |
1026 | variable which many people wanted to see was | |
1027 | `strokes-use-strokes-buffer' which allows the user to use strokes | |
1028 | silently--without displaying the strokes. All variables can be set | |
69c3280d | 1029 | by customizing the group `strokes' via \\[customize-group].")) |
ded4da95 | 1030 | (set-buffer standard-output) |
7d317bca RS |
1031 | (help-mode) |
1032 | (print-help-return-message))) | |
aea01cd7 | 1033 | |
ded4da95 | 1034 | (defalias 'strokes-report-bug 'report-emacs-bug) |
aea01cd7 RS |
1035 | |
1036 | (defsubst strokes-fill-current-buffer-with-whitespace () | |
0d0db51e | 1037 | "Erase the contents of the current buffer and fill it with whitespace." |
aea01cd7 RS |
1038 | (erase-buffer) |
1039 | (loop repeat (frame-height) do | |
61bf4252 | 1040 | (insert-char ?\s (1- (frame-width))) |
aea01cd7 RS |
1041 | (newline)) |
1042 | (goto-char (point-min))) | |
1043 | ||
0d0db51e DL |
1044 | (defun strokes-window-configuration-changed-p () |
1045 | "Non-nil if the `strokes-window-configuration' frame properties changed. | |
ded4da95 | 1046 | This is based on the last time `strokes-window-configuration' was updated." |
0d0db51e DL |
1047 | (compare-window-configurations (current-window-configuration) |
1048 | strokes-window-configuration)) | |
1049 | ||
aea01cd7 | 1050 | (defun strokes-update-window-configuration () |
0d0db51e | 1051 | "Ensure that `strokes-window-configuration' is up-to-date." |
aea01cd7 RS |
1052 | (interactive) |
1053 | (let ((current-window (selected-window))) | |
1054 | (cond ((or (window-minibuffer-p current-window) | |
1055 | (window-dedicated-p current-window)) | |
1056 | ;; don't try to update strokes window configuration | |
1057 | ;; if window is dedicated or a minibuffer | |
1058 | nil) | |
1059 | ((or (interactive-p) | |
0d0db51e | 1060 | (not (buffer-live-p (get-buffer strokes-buffer-name))) |
aea01cd7 RS |
1061 | (null strokes-window-configuration)) |
1062 | ;; create `strokes-window-configuration' from scratch... | |
1063 | (save-excursion | |
1064 | (save-window-excursion | |
1065 | (get-buffer-create strokes-buffer-name) | |
1066 | (set-window-buffer current-window strokes-buffer-name) | |
1067 | (delete-other-windows) | |
1068 | (fundamental-mode) | |
1069 | (auto-save-mode 0) | |
1070 | (if (featurep 'font-lock) | |
1071 | (font-lock-mode 0)) | |
1072 | (abbrev-mode 0) | |
1073 | (buffer-disable-undo (current-buffer)) | |
1074 | (setq truncate-lines nil) | |
1075 | (strokes-fill-current-buffer-with-whitespace) | |
1076 | (setq strokes-window-configuration (current-window-configuration)) | |
1077 | (bury-buffer)))) | |
0d0db51e DL |
1078 | ((strokes-window-configuration-changed-p) ; simple update |
1079 | ;; update the strokes-window-configuration for this | |
1080 | ;; specific frame... | |
aea01cd7 RS |
1081 | (save-excursion |
1082 | (save-window-excursion | |
1083 | (set-window-buffer current-window strokes-buffer-name) | |
1084 | (delete-other-windows) | |
1085 | (strokes-fill-current-buffer-with-whitespace) | |
1086 | (setq strokes-window-configuration (current-window-configuration)) | |
1087 | (bury-buffer))))))) | |
1088 | ||
1089 | ;;;###autoload | |
1090 | (defun strokes-load-user-strokes () | |
1091 | "Load user-defined strokes from file named by `strokes-file'." | |
1092 | (interactive) | |
1093 | (cond ((and (file-exists-p strokes-file) | |
1094 | (file-readable-p strokes-file)) | |
1095 | (load-file strokes-file)) | |
1096 | ((interactive-p) | |
1097 | (error "Trouble loading user-defined strokes; nothing done")) | |
1098 | (t | |
1099 | (message "No user-defined strokes, sorry")))) | |
1100 | ||
aea01cd7 RS |
1101 | (defun strokes-prompt-user-save-strokes () |
1102 | "Save user-defined strokes to file named by `strokes-file'." | |
1103 | (interactive) | |
1104 | (save-excursion | |
1105 | (let ((current strokes-global-map)) | |
1106 | (unwind-protect | |
1107 | (progn | |
1108 | (setq strokes-global-map nil) | |
1109 | (strokes-load-user-strokes) | |
1110 | (if (and (not (equal current strokes-global-map)) | |
1111 | (or (interactive-p) | |
a81b56d5 | 1112 | (yes-or-no-p "Save your strokes? "))) |
aea01cd7 RS |
1113 | (progn |
1114 | (require 'pp) ; pretty-print variables | |
1115 | (message "Saving strokes in %s..." strokes-file) | |
1116 | (get-buffer-create "*saved-strokes*") | |
1117 | (set-buffer "*saved-strokes*") | |
1118 | (erase-buffer) | |
1119 | (emacs-lisp-mode) | |
1120 | (goto-char (point-min)) | |
051f9830 | 1121 | (insert |
ded4da95 | 1122 | ";; -*- emacs-lisp -*-\n") |
051f9830 | 1123 | (insert (format ";;; saved strokes for %s, as of %s\n\n" |
47e1b9a6 RS |
1124 | (user-full-name) |
1125 | (format-time-string "%B %e, %Y" nil))) | |
aea01cd7 | 1126 | (message "Saving strokes in %s..." strokes-file) |
ded4da95 | 1127 | (insert (format "(setq strokes-global-map\n'%s)" |
47e1b9a6 | 1128 | (pp current))) |
aea01cd7 RS |
1129 | (message "Saving strokes in %s..." strokes-file) |
1130 | (indent-region (point-min) (point-max) nil) | |
1131 | (write-region (point-min) | |
1132 | (point-max) | |
1133 | strokes-file)) | |
1134 | (message "(no changes need to be saved)"))) | |
1135 | ;; protected | |
1136 | (if (get-buffer "*saved-strokes*") | |
1137 | (kill-buffer (get-buffer "*saved-strokes*"))) | |
1138 | (setq strokes-global-map current))))) | |
1139 | ||
aea01cd7 RS |
1140 | (defun strokes-toggle-strokes-buffer (&optional arg) |
1141 | "Toggle the use of the strokes buffer. | |
ded4da95 | 1142 | In other words, toggle the variable `strokes-use-strokes-buffer'. |
aea01cd7 RS |
1143 | With ARG, use strokes buffer if and only if ARG is positive or true. |
1144 | Returns value of `strokes-use-strokes-buffer'." | |
1145 | (interactive "P") | |
1146 | (setq strokes-use-strokes-buffer | |
1147 | (if arg (> (prefix-numeric-value arg) 0) | |
1148 | (not strokes-use-strokes-buffer)))) | |
1149 | ||
0d0db51e | 1150 | (defun strokes-xpm-for-stroke (&optional stroke bufname b/w-only) |
ded4da95 | 1151 | "Create an XPM pixmap for the given STROKE in buffer ` *strokes-xpm*'. |
0d0db51e DL |
1152 | If STROKE is not supplied, then `strokes-last-stroke' will be used. |
1153 | Optional BUFNAME to name something else. | |
1154 | The pixmap will contain time information via rainbow dot colors | |
1155 | where each individual strokes begins. | |
1156 | Optional B/W-ONLY non-nil will create a mono pixmap, not intended | |
1157 | for trying to figure out the order of strokes, but rather for reading | |
1158 | the stroke as a character in some language." | |
1159 | (interactive) | |
1160 | (save-excursion | |
1161 | (let ((buf (get-buffer-create (or bufname " *strokes-xpm*"))) | |
1162 | (stroke (strokes-eliminate-consecutive-redundancies | |
1163 | (strokes-fill-stroke | |
1164 | (strokes-renormalize-to-grid (or stroke | |
1165 | strokes-last-stroke) | |
1166 | 31)))) | |
1167 | (lift-flag t) | |
1168 | (rainbow-chars (list ?R ?O ?Y ?G ?B ?P))) ; ROYGBIV w/o indigo | |
1169 | (set-buffer buf) | |
1170 | (erase-buffer) | |
1171 | (insert strokes-xpm-header) | |
1172 | (loop repeat 33 do | |
1173 | (insert ?\") | |
61bf4252 | 1174 | (insert-char ?\s 33) |
0d0db51e DL |
1175 | (insert "\",") |
1176 | (newline) | |
1177 | finally | |
1178 | (forward-line -1) | |
1179 | (end-of-line) | |
1180 | (insert "}\n")) | |
1181 | (loop for point in stroke | |
1182 | for x = (car-safe point) | |
1183 | for y = (cdr-safe point) do | |
1184 | (cond ((consp point) | |
1185 | ;; draw a point, and possibly a starting-point | |
1186 | (if (and lift-flag (not b/w-only)) | |
1187 | ;; mark starting point with the appropriate color | |
1188 | (let ((char (or (car rainbow-chars) ?\.))) | |
1189 | (loop for i from 0 to 2 do | |
1190 | (loop for j from 0 to 2 do | |
ded4da95 | 1191 | (goto-line (+ 16 i y)) |
0d0db51e DL |
1192 | (forward-char (+ 1 j x)) |
1193 | (delete-char 1) | |
1194 | (insert char))) | |
1195 | (setq rainbow-chars (cdr rainbow-chars) | |
1196 | lift-flag nil)) | |
1197 | ;; Otherwise, just plot the point... | |
ded4da95 DL |
1198 | (goto-line (+ 17 y)) |
1199 | (forward-char (+ 2 x)) | |
61bf4252 | 1200 | (subst-char-in-region (point) (1+ (point)) ?\s ?\*))) |
0d0db51e DL |
1201 | ((strokes-lift-p point) |
1202 | ;; a lift--tell the loop to X out the next point... | |
1203 | (setq lift-flag t)))) | |
1204 | (when (interactive-p) | |
1205 | (pop-to-buffer " *strokes-xpm*") | |
1206 | ;; (xpm-mode 1) | |
1207 | (goto-char (point-min)) | |
1208 | (put-image (create-image (buffer-string) 'xpm t :ascent 100) | |
1209 | (line-end-position)))))) | |
1210 | ||
ded4da95 | 1211 | ;;; Strokes Edit stuff... ### NOT IMPLEMENTED YET ### |
0d0db51e DL |
1212 | |
1213 | ;;(defun strokes-edit-quit () | |
1214 | ;; (interactive) | |
1215 | ;; (or (one-window-p t 0) | |
1216 | ;; (delete-window)) | |
1217 | ;; (kill-buffer "*Strokes List*")) | |
1218 | ||
1219 | ;;(define-derived-mode edit-strokes-mode list-mode | |
1220 | ;; "Edit-Strokes" | |
1221 | ;; "Major mode for `edit-strokes' and `list-strokes' buffers. | |
1222 | ||
1223 | ;;Editing commands: | |
1224 | ||
1225 | ;;\\{edit-strokes-mode-map}" | |
1226 | ;; (setq truncate-lines nil | |
1227 | ;; auto-show-mode nil ; don't want problems here either | |
1228 | ;; mode-popup-menu edit-strokes-menu) ; what about extent-specific stuff? | |
1229 | ;; (and (featurep 'menubar) | |
1230 | ;; current-menubar | |
1231 | ;; (set (make-local-variable 'current-menubar) | |
1232 | ;; (copy-sequence current-menubar)) | |
1233 | ;; (add-submenu nil edit-strokes-menu))) | |
1234 | ||
1235 | ;;(let ((map edit-strokes-mode-map)) | |
1236 | ;; (define-key map "<" 'beginning-of-buffer) | |
1237 | ;; (define-key map ">" 'end-of-buffer) | |
1238 | ;; ;; (define-key map "c" 'strokes-copy-other-face) | |
1239 | ;; ;; (define-key map "C" 'strokes-copy-this-face) | |
1240 | ;; ;; (define-key map "s" 'strokes-smaller) | |
1241 | ;; ;; (define-key map "l" 'strokes-larger) | |
1242 | ;; ;; (define-key map "b" 'strokes-bold) | |
1243 | ;; ;; (define-key map "i" 'strokes-italic) | |
1244 | ;; (define-key map "e" 'strokes-list-edit) | |
1245 | ;; ;; (define-key map "f" 'strokes-font) | |
1246 | ;; ;; (define-key map "u" 'strokes-underline) | |
1247 | ;; ;; (define-key map "t" 'strokes-truefont) | |
1248 | ;; ;; (define-key map "F" 'strokes-foreground) | |
1249 | ;; ;; (define-key map "B" 'strokes-background) | |
1250 | ;; ;; (define-key map "D" 'strokes-doc-string) | |
1251 | ;; (define-key map "a" 'strokes-global-set-stroke) | |
1252 | ;; (define-key map "d" 'strokes-list-delete-stroke) | |
1253 | ;; ;; (define-key map "n" 'strokes-list-next) | |
1254 | ;; ;; (define-key map "p" 'strokes-list-prev) | |
1255 | ;; ;; (define-key map " " 'strokes-list-next) | |
1256 | ;; ;; (define-key map "\C-?" 'strokes-list-prev) | |
1257 | ;; (define-key map "g" 'strokes-list-strokes) ; refresh display | |
1258 | ;; (define-key map "q" 'strokes-edit-quit) | |
1259 | ;; (define-key map [(control c) (control c)] 'bury-buffer)) | |
1260 | ||
1261 | ;;;;;###autoload | |
1262 | ;;(defun strokes-edit-strokes (&optional chronological strokes-map) | |
1263 | ;; ;; ### DEAL WITH THE 2nd ARGUMENT ISSUE! ### | |
1264 | ;; "Edit strokes in a pop-up buffer containing strokes and their definitions. | |
1265 | ;;If STROKES-MAP is not given, `strokes-global-map' will be used instead. | |
1266 | ||
1267 | ;;Editing commands: | |
1268 | ||
1269 | ;;\\{edit-faces-mode-map}" | |
1270 | ;; (interactive "P") | |
1271 | ;; (pop-to-buffer (get-buffer-create "*Strokes List*")) | |
1272 | ;; (reset-buffer (current-buffer)) ; handy function from minibuf.el | |
1273 | ;; (setq strokes-map (or strokes-map | |
1274 | ;; strokes-global-map | |
1275 | ;; (progn | |
1276 | ;; (strokes-load-user-strokes) | |
1277 | ;; strokes-global-map))) | |
1278 | ;; (or chronological | |
1279 | ;; (setq strokes-map (sort (copy-sequence strokes-map) | |
1280 | ;; 'strokes-alphabetic-lessp))) | |
1281 | ;; ;; (push-window-configuration) | |
1282 | ;; (insert | |
1283 | ;; "Command Stroke\n" | |
1284 | ;; "------- ------") | |
1285 | ;; (loop for def in strokes-map | |
1286 | ;; for i from 0 to (1- (length strokes-map)) do | |
1287 | ;; (let ((stroke (car def)) | |
1288 | ;; (command-name (symbol-name (cdr def)))) | |
1289 | ;; (strokes-xpm-for-stroke stroke " *strokes-xpm*") | |
1290 | ;; (newline 2) | |
61bf4252 | 1291 | ;; (insert-char ?\s 45) |
0d0db51e DL |
1292 | ;; (beginning-of-line) |
1293 | ;; (insert command-name) | |
1294 | ;; (beginning-of-line) | |
1295 | ;; (forward-char 45) | |
1296 | ;; (set (intern (format "strokes-list-annotation-%d" i)) | |
1297 | ;; (make-annotation (make-glyph | |
1298 | ;; (list | |
1299 | ;; (vector 'xpm | |
1300 | ;; :data (buffer-substring | |
1301 | ;; (point-min " *strokes-xpm*") | |
1302 | ;; (point-max " *strokes-xpm*") | |
1303 | ;; " *strokes-xpm*")) | |
1304 | ;; [string :data "[Stroke]"])) | |
1305 | ;; (point) 'text)) | |
1306 | ;; (set-annotation-data (symbol-value (intern (format "strokes-list-annotation-%d" i))) | |
1307 | ;; def)) | |
1308 | ;; finally do (kill-region (1+ (point)) (point-max))) | |
1309 | ;; (edit-strokes-mode) | |
1310 | ;; (goto-char (point-min))) | |
1311 | ||
1312 | ;;;;;###autoload | |
1313 | ;;(defalias 'edit-strokes 'strokes-edit-strokes) | |
1314 | ||
1315 | (eval-when-compile (defvar view-mode-map)) | |
1316 | ||
1317 | ;;;###autoload | |
1318 | (defun strokes-list-strokes (&optional chronological strokes-map) | |
1319 | "Pop up a buffer containing an alphabetical listing of strokes in STROKES-MAP. | |
1320 | With CHRONOLOGICAL prefix arg \(\\[universal-argument]\) list strokes | |
1321 | chronologically by command name. | |
1322 | If STROKES-MAP is not given, `strokes-global-map' will be used instead." | |
1323 | (interactive "P") | |
1324 | (setq strokes-map (or strokes-map | |
1325 | strokes-global-map | |
1326 | (progn | |
1327 | (strokes-load-user-strokes) | |
1328 | strokes-global-map))) | |
1329 | (if (not chronological) | |
1330 | ;; then alphabetize the strokes based on command names... | |
1331 | (setq strokes-map (sort (copy-sequence strokes-map) | |
1332 | (function strokes-alphabetic-lessp)))) | |
1333 | (let ((config (current-window-configuration))) | |
1334 | (set-buffer (get-buffer-create "*Strokes List*")) | |
1335 | (setq buffer-read-only nil) | |
1336 | (erase-buffer) | |
1337 | (insert | |
1338 | "Command Stroke\n" | |
1339 | "------- ------") | |
1340 | (loop for def in strokes-map do | |
1341 | (let ((stroke (car def)) | |
99e0e3e2 EZ |
1342 | (command-name (if (symbolp (cdr def)) |
1343 | (symbol-name (cdr def)) | |
1344 | (prin1-to-string (cdr def))))) | |
0d0db51e DL |
1345 | (strokes-xpm-for-stroke stroke " *strokes-xpm*") |
1346 | (newline 2) | |
61bf4252 | 1347 | (insert-char ?\s 45) |
0d0db51e DL |
1348 | (beginning-of-line) |
1349 | (insert command-name) | |
1350 | (beginning-of-line) | |
1351 | (forward-char 45) | |
99e0e3e2 EZ |
1352 | (insert-image |
1353 | (create-image (with-current-buffer " *strokes-xpm*" | |
1354 | (buffer-string)) | |
1355 | 'xpm t | |
1356 | :color-symbols | |
1357 | `(("foreground" | |
1358 | . ,(frame-parameter nil 'foreground-color)))))) | |
4c3fca9c RS |
1359 | finally do (unless (eobp) |
1360 | (kill-region (1+ (point)) (point-max)))) | |
a81b56d5 | 1361 | (view-buffer "*Strokes List*" nil) |
0d0db51e DL |
1362 | (set (make-local-variable 'view-mode-map) |
1363 | (let ((map (copy-keymap view-mode-map))) | |
1364 | (define-key map "q" `(lambda () | |
1365 | (interactive) | |
1366 | (View-quit) | |
1367 | (set-window-configuration ,config))) | |
1368 | map)) | |
1369 | (goto-char (point-min)))) | |
1370 | ||
1371 | (defun strokes-alphabetic-lessp (stroke1 stroke2) | |
1372 | "T iff command name for STROKE1 is less than STROKE2's in lexicographic order." | |
1373 | (let ((command-name-1 (symbol-name (cdr stroke1))) | |
1374 | (command-name-2 (symbol-name (cdr stroke2)))) | |
1375 | (string-lessp command-name-1 command-name-2))) | |
1376 | ||
ded4da95 DL |
1377 | (defvar strokes-mode-map |
1378 | (let ((map (make-sparse-keymap))) | |
1379 | (define-key map [(shift down-mouse-2)] 'strokes-do-stroke) | |
1380 | (define-key map [(meta down-mouse-2)] 'strokes-do-complex-stroke) | |
1381 | map)) | |
aea01cd7 | 1382 | |
ded4da95 DL |
1383 | ;;;###autoload |
1384 | (define-minor-mode strokes-mode | |
1385 | "Toggle Strokes global minor mode.\\<strokes-mode-map> | |
1386 | With ARG, turn strokes on if and only if ARG is positive. | |
1387 | Strokes are pictographic mouse gestures which invoke commands. | |
1388 | Strokes are invoked with \\[strokes-do-stroke]. You can define | |
1389 | new strokes with \\[strokes-global-set-stroke]. See also | |
1390 | \\[strokes-do-complex-stroke] for `complex' strokes. | |
aea01cd7 RS |
1391 | |
1392 | To use strokes for pictographic editing, such as Chinese/Japanese, use | |
ded4da95 DL |
1393 | \\[strokes-compose-complex-stroke], which draws strokes and inserts them. |
1394 | Encode/decode your strokes with \\[strokes-encode-buffer], | |
1395 | \\[strokes-decode-buffer]. | |
1396 | ||
1397 | \\{strokes-mode-map}" | |
1398 | nil strokes-modeline-string strokes-mode-map | |
1399 | :group 'strokes :global t | |
1400 | (cond ((not (display-mouse-p)) | |
1401 | (error "Can't use Strokes without a mouse")) | |
1402 | (strokes-mode ; turn on strokes | |
1403 | (and (file-exists-p strokes-file) | |
1404 | (null strokes-global-map) | |
1405 | (strokes-load-user-strokes)) | |
1406 | (add-hook 'kill-emacs-query-functions | |
1407 | 'strokes-prompt-user-save-strokes) | |
1408 | (add-hook 'select-frame-hook | |
1409 | 'strokes-update-window-configuration) | |
1410 | (strokes-update-window-configuration)) | |
1411 | (t ; turn off strokes | |
1412 | (if (get-buffer strokes-buffer-name) | |
1413 | (kill-buffer (get-buffer strokes-buffer-name))) | |
1414 | (remove-hook 'select-frame-hook | |
1415 | 'strokes-update-window-configuration)))) | |
aea01cd7 | 1416 | |
aea01cd7 | 1417 | |
0d0db51e DL |
1418 | ;;;; strokes-xpm stuff (later may be separate)... |
1419 | ||
ded4da95 | 1420 | ;; This is the stuff that will eventually be used for composing letters in |
0d0db51e DL |
1421 | ;; any language, compression, decompression, graphics, editing, etc. |
1422 | ||
10853fc3 | 1423 | (defface strokes-char '((t (:background "lightgray"))) |
0d0db51e DL |
1424 | "Face for strokes characters." |
1425 | :version "21.1" | |
1426 | :group 'strokes) | |
1427 | ||
1428 | (put 'strokes 'char-table-extra-slots 0) | |
1429 | (defconst strokes-char-table (make-char-table 'strokes) ; | |
1430 | "The table which stores values for the character keys.") | |
1431 | (aset strokes-char-table ?0 0) | |
1432 | (aset strokes-char-table ?1 1) | |
1433 | (aset strokes-char-table ?2 2) | |
1434 | (aset strokes-char-table ?3 3) | |
1435 | (aset strokes-char-table ?4 4) | |
1436 | (aset strokes-char-table ?5 5) | |
1437 | (aset strokes-char-table ?6 6) | |
1438 | (aset strokes-char-table ?7 7) | |
1439 | (aset strokes-char-table ?8 8) | |
1440 | (aset strokes-char-table ?9 9) | |
1441 | (aset strokes-char-table ?a 10) | |
1442 | (aset strokes-char-table ?b 11) | |
1443 | (aset strokes-char-table ?c 12) | |
1444 | (aset strokes-char-table ?d 13) | |
1445 | (aset strokes-char-table ?e 14) | |
1446 | (aset strokes-char-table ?f 15) | |
1447 | (aset strokes-char-table ?g 16) | |
1448 | (aset strokes-char-table ?h 17) | |
1449 | (aset strokes-char-table ?i 18) | |
1450 | (aset strokes-char-table ?j 19) | |
1451 | (aset strokes-char-table ?k 20) | |
1452 | (aset strokes-char-table ?l 21) | |
1453 | (aset strokes-char-table ?m 22) | |
1454 | (aset strokes-char-table ?n 23) | |
1455 | (aset strokes-char-table ?o 24) | |
1456 | (aset strokes-char-table ?p 25) | |
1457 | (aset strokes-char-table ?q 26) | |
1458 | (aset strokes-char-table ?r 27) | |
1459 | (aset strokes-char-table ?s 28) | |
1460 | (aset strokes-char-table ?t 29) | |
1461 | (aset strokes-char-table ?u 30) | |
1462 | (aset strokes-char-table ?v 31) | |
1463 | (aset strokes-char-table ?w 32) | |
1464 | (aset strokes-char-table ?x 33) | |
1465 | (aset strokes-char-table ?y 34) | |
1466 | (aset strokes-char-table ?z 35) | |
1467 | (aset strokes-char-table ?A 36) | |
1468 | (aset strokes-char-table ?B 37) | |
1469 | (aset strokes-char-table ?C 38) | |
1470 | (aset strokes-char-table ?D 39) | |
1471 | (aset strokes-char-table ?E 40) | |
1472 | (aset strokes-char-table ?F 41) | |
1473 | (aset strokes-char-table ?G 42) | |
1474 | (aset strokes-char-table ?H 43) | |
1475 | (aset strokes-char-table ?I 44) | |
1476 | (aset strokes-char-table ?J 45) | |
1477 | (aset strokes-char-table ?K 46) | |
1478 | (aset strokes-char-table ?L 47) | |
1479 | (aset strokes-char-table ?M 48) | |
1480 | (aset strokes-char-table ?N 49) | |
1481 | (aset strokes-char-table ?O 50) | |
1482 | (aset strokes-char-table ?P 51) | |
1483 | (aset strokes-char-table ?Q 52) | |
1484 | (aset strokes-char-table ?R 53) | |
1485 | (aset strokes-char-table ?S 54) | |
1486 | (aset strokes-char-table ?T 55) | |
1487 | (aset strokes-char-table ?U 56) | |
1488 | (aset strokes-char-table ?V 57) | |
1489 | (aset strokes-char-table ?W 58) | |
1490 | (aset strokes-char-table ?X 59) | |
1491 | (aset strokes-char-table ?Y 60) | |
1492 | (aset strokes-char-table ?Z 61) | |
1493 | ||
1494 | (defconst strokes-base64-chars | |
1495 | ;; I wanted to make this a vector of individual like (vector ?0 | |
ded4da95 | 1496 | ;; ?1 ?2 ...), but `concat' refuses to accept single |
0d0db51e DL |
1497 | ;; characters. |
1498 | (vector "0" "1" "2" "3" "4" "5" "6" "7" "8" "9" | |
1499 | "a" "b" "c" "d" "e" "f" "g" "h" "i" "j" "k" "l" "m" "n" "o" | |
1500 | "p" "q" "r" "s" "t" "u" "v" "w" "x" "y" "z" "A" "B" "C" "D" | |
1501 | "E" "F" "G" "H" "I" "J" "K" "L" "M" "N" "O" "P" "Q" "R" "S" | |
1502 | "T" "U" "V" "W" "X" "Y" "Z") | |
1503 | ;; (vector [?0] [?1] [?2] [?3] [?4] [?5] [?6] [?7] [?8] [?9] | |
1504 | ;; [?a] [?b] [?c] [?d] [?e] [?f] [?g] [?h] [?i] [?j] | |
1505 | ;; [?k] [?l] [?m] [?n] [?o] [?p] [?q] [?r] [?s] [?t] | |
1506 | ;; [?u] [?v] [?w] [?x] [?y] [?z] | |
1507 | ;; [?A] [?B] [?C] [?D] [?E] [?F] [?G] [?H] [?I] [?J] | |
1508 | ;; [?K] [?L] [?M] [?N] [?O] [?P] [?Q] [?R] [?S] [?T] | |
1509 | ;; [?U] [?V] [?W] [?X] [?Y] [?Z]) | |
1510 | "Character vector for fast lookup of base-64 encoding of numbers in [0,61].") | |
1511 | ||
1512 | (defsubst strokes-xpm-char-on-p (char) | |
ded4da95 | 1513 | "Non-nil if CHAR represents an `on' bit in the XPM." |
0d0db51e DL |
1514 | (eq char ?*)) |
1515 | ||
1516 | (defsubst strokes-xpm-char-bit-p (char) | |
ded4da95 | 1517 | "Non-nil if CHAR represents an `on' or `off' bit in the XPM." |
61bf4252 | 1518 | (or (eq char ?\s) |
0d0db51e DL |
1519 | (eq char ?*))) |
1520 | ||
1521 | ;;(defsubst strokes-xor (a b) ### Should I make this an inline function? ### | |
1522 | ;; "T iff one and only one of A and B is non-nil; otherwise, returns nil. | |
1523 | ;;NOTE: Don't use this as a numeric xor since it treats all non-nil | |
1524 | ;; values as t including `0' (zero)." | |
1525 | ;; (eq (null a) (not (null b)))) | |
1526 | ||
1527 | (defsubst strokes-xpm-encode-length-as-string (length) | |
ded4da95 | 1528 | "Given some LENGTH in [0,62) do a fast lookup of its encoding." |
0d0db51e | 1529 | (aref strokes-base64-chars length)) |
f1180544 | 1530 | |
0d0db51e DL |
1531 | (defsubst strokes-xpm-decode-char (character) |
1532 | "Given a CHARACTER, do a fast lookup to find its corresponding integer value." | |
1533 | (aref strokes-char-table character)) | |
f1180544 | 1534 | |
0d0db51e | 1535 | (defun strokes-xpm-to-compressed-string (&optional xpm-buffer) |
ded4da95 DL |
1536 | "Convert XPM in XPM-BUFFER to compressed string representing the stroke. |
1537 | XPM-BUFFER defaults to ` *strokes-xpm*'." | |
0d0db51e | 1538 | (save-excursion |
ded4da95 | 1539 | (set-buffer (setq xpm-buffer (or xpm-buffer " *strokes-xpm*"))) |
0d0db51e DL |
1540 | (goto-char (point-min)) |
1541 | (search-forward "/* pixels */") ; skip past header junk | |
1542 | (forward-char 2) | |
1543 | ;; a note for below: | |
1544 | ;; the `current-char' is the char being counted -- NOT the char at (point) | |
1545 | ;; which happens to be called `char-at-point' | |
1546 | (let ((compressed-string "+/") ; initialize the output | |
1547 | (count 0) ; keep a current count of | |
1548 | ; `current-char' | |
1549 | (last-char-was-on-p t) ; last entered stream | |
1550 | ; represented `on' bits | |
1551 | (current-char-is-on-p nil) ; current stream represents `on' bits | |
1552 | (char-at-point (char-after))) ; read the first char | |
1553 | (while (not (eq char-at-point ?})) ; a `}' denotes the | |
1554 | ; end of the pixmap | |
1555 | (cond ((zerop count) ; must restart counting | |
1556 | ;; check to see if the `char-at-point' is an actual pixmap bit | |
1557 | (when (strokes-xpm-char-bit-p char-at-point) | |
1558 | (setq count 1 | |
ded4da95 | 1559 | current-char-is-on-p (strokes-xpm-char-on-p char-at-point))) |
0d0db51e DL |
1560 | (forward-char 1)) |
1561 | ((= count 61) ; maximum single char's | |
1562 | ; encoding length | |
ded4da95 DL |
1563 | (setq compressed-string |
1564 | (concat compressed-string | |
1565 | ;; add a zero-length encoding when | |
1566 | ;; necessary | |
1567 | (when (eq last-char-was-on-p | |
1568 | current-char-is-on-p) | |
1569 | ;; "0" | |
1570 | (strokes-xpm-encode-length-as-string 0)) | |
1571 | (strokes-xpm-encode-length-as-string 61)) | |
0d0db51e DL |
1572 | last-char-was-on-p current-char-is-on-p |
1573 | count 0)) ; note that we just set | |
1574 | ; count=0 and *don't* advance | |
1575 | ; (point) | |
1576 | ((strokes-xpm-char-bit-p char-at-point) ; an actual xpm bit | |
1577 | (if (eq current-char-is-on-p | |
1578 | (strokes-xpm-char-on-p char-at-point)) | |
1579 | ;; yet another of the same bit-type, so we continue | |
1580 | ;; counting... | |
1581 | (progn | |
1582 | (incf count) | |
1583 | (forward-char 1)) | |
1584 | ;; otherwise, it's the opposite bit-type, so we do a | |
1585 | ;; write and then restart count ### NOTE (for myself | |
1586 | ;; to be aware of) ### I really should advance | |
1587 | ;; (point) in this case instead of letting another | |
1588 | ;; iteration go through and letting the case: count=0 | |
1589 | ;; take care of this stuff for me. That's why | |
1590 | ;; there's no (forward-char 1) below. | |
ded4da95 DL |
1591 | (setq compressed-string |
1592 | (concat compressed-string | |
1593 | ;; add a zero-length encoding when | |
1594 | ;; necessary | |
1595 | (when (eq last-char-was-on-p | |
1596 | current-char-is-on-p) | |
1597 | ;; "0" | |
1598 | (strokes-xpm-encode-length-as-string 0)) | |
1599 | (strokes-xpm-encode-length-as-string count)) | |
0d0db51e DL |
1600 | count 0 |
1601 | last-char-was-on-p current-char-is-on-p))) | |
1602 | (t ; ELSE it's some other useless | |
1603 | ; char, like `"' or `,' | |
1604 | (forward-char 1))) | |
1605 | (setq char-at-point (char-after))) | |
1606 | (concat compressed-string | |
1607 | (when (> count 0) | |
1608 | (concat (when (eq last-char-was-on-p | |
1609 | current-char-is-on-p) | |
1610 | ;; "0" | |
1611 | (strokes-xpm-encode-length-as-string 0)) | |
1612 | (strokes-xpm-encode-length-as-string count))) | |
1613 | "/")))) | |
1614 | ||
1615 | ;;;###autoload | |
1616 | (defun strokes-decode-buffer (&optional buffer force) | |
1617 | "Decode stroke strings in BUFFER and display their corresponding glyphs. | |
1618 | Optional BUFFER defaults to the current buffer. | |
1619 | Optional FORCE non-nil will ignore the buffer's read-only status." | |
1620 | (interactive) | |
1621 | ;; (interactive "*bStrokify buffer: ") | |
1622 | (save-excursion | |
1623 | (set-buffer (setq buffer (get-buffer (or buffer (current-buffer))))) | |
1624 | (when (or (not buffer-read-only) | |
1625 | force | |
1626 | inhibit-read-only | |
1627 | (y-or-n-p | |
1628 | (format "Buffer %s is read-only. Strokify anyway? " buffer))) | |
1629 | (let ((inhibit-read-only t)) | |
1630 | (message "Strokifying %s..." buffer) | |
1631 | (goto-char (point-min)) | |
1632 | (let (ext string image) | |
ded4da95 | 1633 | ;; The comment below is what I'd have to do if I wanted to |
0d0db51e DL |
1634 | ;; deal with random newlines in the midst of the compressed |
1635 | ;; strings. If I do this, I'll also have to change | |
1636 | ;; `strokes-xpm-to-compress-string' to deal with the newline, | |
1637 | ;; and possibly other whitespace stuff. YUCK! | |
1638 | ;; (while (re-search-forward "\\+/\\(\\w\\|\\)+/" nil t nil (get-buffer buffer)) | |
1639 | (while (with-current-buffer buffer | |
1640 | (when (re-search-forward "\\+/\\(\\w+\\)/" nil t nil) | |
1641 | (setq string (match-string 1)) | |
1642 | (goto-char (match-end 0)) | |
1643 | (replace-match " ") | |
1644 | t)) | |
1645 | (strokes-xpm-for-compressed-string string " *strokes-xpm*") | |
1646 | (setq image (create-image (with-current-buffer " *strokes-xpm*" | |
1647 | (buffer-string)) | |
1648 | 'xpm t)) | |
1649 | (insert-image image | |
1650 | (propertize " " | |
1651 | 'type 'stroke-glyph | |
1652 | 'stroke-glyph image | |
1653 | 'data string)))) | |
1654 | (message "Strokifying %s...done" buffer))))) | |
1655 | ||
1656 | (defun strokes-encode-buffer (&optional buffer force) | |
ded4da95 | 1657 | "Convert the glyphs in BUFFER to their base-64 ASCII representations. |
0d0db51e DL |
1658 | Optional BUFFER defaults to the current buffer. |
1659 | Optional FORCE non-nil will ignore the buffer's read-only status." | |
1660 | ;; ### NOTE !!! ### (for me) | |
1661 | ;; For later on, you can/should make the inserted strings atomic | |
1662 | ;; extents, so that the users have a clue that they shouldn't be | |
1663 | ;; editing inside them. Plus, if you make them extents, you can | |
1664 | ;; very easily just hide the glyphs, so if you unstrokify, and the | |
1665 | ;; restrokify, then those that already are glyphed don't need to be | |
1666 | ;; re-calculated, etc. It's just nicer that way. The only things | |
1667 | ;; to worry about is cleanup (i.e. do the glyphs get gc'd when the | |
1668 | ;; buffer is killed? | |
1669 | ;; (interactive "*bUnstrokify buffer: ") | |
1670 | (interactive) | |
1671 | (save-excursion | |
1672 | (set-buffer (setq buffer (or buffer (current-buffer)))) | |
1673 | (when (or (not buffer-read-only) | |
1674 | force | |
1675 | inhibit-read-only | |
1676 | (y-or-n-p | |
1677 | (format "Buffer %s is read-only. Encode anyway? " buffer))) | |
1678 | (message "Encoding strokes in %s..." buffer) | |
1679 | ;; (map-extents | |
1680 | ;; (lambda (ext buf) | |
1681 | ;; (when (eq (extent-property ext 'type) 'stroke-glyph) | |
1682 | ;; (goto-char (extent-start-position ext)) | |
1683 | ;; (delete-char 1) ; ### What the hell do I do here? ### | |
1684 | ;; (insert "+/" (extent-property ext 'data) "/") | |
1685 | ;; (delete-extent ext)))))) | |
1686 | (let ((inhibit-read-only t) | |
1687 | (start nil) | |
1688 | glyph) | |
1689 | (while (or (and (bobp) | |
1690 | (get-text-property (point) 'type)) | |
1691 | (setq start (next-single-property-change (point) 'type))) | |
1692 | (when (eq 'stroke-glyph (get-text-property (point) 'type)) | |
1693 | (goto-char start) | |
1694 | (setq start (point-marker) | |
1695 | glyph (get-text-property start 'display)) | |
1696 | (insert "+/" (get-text-property (point) 'data) ?/) | |
1697 | (delete-char 1) | |
1698 | (add-text-properties start (point) | |
1699 | (list 'type 'stroke-string | |
10853fc3 | 1700 | 'face 'strokes-char |
0d0db51e DL |
1701 | 'stroke-glyph glyph |
1702 | 'display nil)))) | |
1703 | (message "Encoding strokes in %s...done" buffer))))) | |
1704 | ||
1705 | (defun strokes-xpm-for-compressed-string (compressed-string &optional bufname) | |
ded4da95 DL |
1706 | "Convert the stroke represented by COMPRESSED-STRING into an XPM. |
1707 | Store XPM in buffer BUFNAME if supplied \(default is ` *strokes-xpm*'\)" | |
0d0db51e | 1708 | (save-excursion |
ded4da95 | 1709 | (or bufname (setq bufname " *strokes-xpm*")) |
0d0db51e DL |
1710 | (set-buffer (get-buffer-create bufname)) |
1711 | (erase-buffer) | |
1712 | (insert compressed-string) | |
1713 | (goto-char (point-min)) | |
1714 | (let ((current-char-is-on-p nil)) | |
1715 | (while (not (eobp)) | |
1716 | (insert-char | |
1717 | (if current-char-is-on-p | |
1718 | ?* | |
61bf4252 | 1719 | ?\s) |
0d0db51e DL |
1720 | (strokes-xpm-decode-char (char-after))) |
1721 | (delete-char 1) | |
1722 | (setq current-char-is-on-p (not current-char-is-on-p))) | |
1723 | (goto-char (point-min)) | |
1724 | (loop repeat 33 do | |
1725 | (insert ?\") | |
1726 | (forward-char 33) | |
1727 | (insert "\",\n")) | |
1728 | (goto-char (point-min)) | |
1729 | (insert strokes-xpm-header)))) | |
1730 | ||
1731 | ;;;###autoload | |
1732 | (defun strokes-compose-complex-stroke () | |
1733 | ;; ### NOTE !!! ### | |
ded4da95 | 1734 | ;; Even though we don't have lexical scoping, it's somewhat ugly how I |
0d0db51e DL |
1735 | ;; pass around variables in the global name space. I can/should |
1736 | ;; change this. | |
1737 | "Read a complex stroke and insert its glyph into the current buffer." | |
1738 | (interactive "*") | |
1739 | (let ((strokes-grid-resolution 33)) | |
1740 | (strokes-read-complex-stroke) | |
1741 | (strokes-xpm-for-stroke nil " *strokes-xpm*" t) | |
1742 | (insert (strokes-xpm-to-compressed-string " *strokes-xpm*")) | |
1743 | (strokes-decode-buffer) | |
1744 | ;; strokes-decode-buffer does a save-excursion. | |
1745 | (forward-char))) | |
1746 | ||
ded4da95 DL |
1747 | (defun strokes-unload-hook () |
1748 | (strokes-mode -1) | |
1749 | (remove-hook 'kill-emacs-query-functions 'strokes-prompt-user-save-strokes)) | |
aea01cd7 | 1750 | |
31eb6fd7 | 1751 | (add-hook 'strokes-unload-hook 'strokes-unload-hook) |
4c3fca9c | 1752 | |
aea01cd7 | 1753 | (run-hooks 'strokes-load-hook) |
ded4da95 | 1754 | (provide 'strokes) |
aea01cd7 | 1755 | |
ab5796a9 | 1756 | ;;; arch-tag: 8377f60e-43fb-467a-bbcd-2774f91f833e |
aea01cd7 | 1757 | ;;; strokes.el ends here |