1;;; calc-keypd.el --- mouse-capable keypad input for Calc
2
3;; Copyright (C) 1990, 1991, 1992, 1993, 2001, 2002, 2003, 2004,
4;;   2005, 2006, 2007 Free Software Foundation, Inc.
5
6;; Author: David Gillespie <daveg@synaptics.com>
7;; Maintainer: Jay Belanger <jay.p.belanger@gmail.com>
8
9;; This file is part of GNU Emacs.
10
11;; GNU Emacs is free software; you can redistribute it and/or modify
12;; it under the terms of the GNU General Public License as published by
13;; the Free Software Foundation; either version 2, or (at your option)
14;; any later version.
15
16;; GNU Emacs is distributed in the hope that it will be useful,
17;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19;; GNU General Public License for more details.
20
21;; You should have received a copy of the GNU General Public License
22;; along with GNU Emacs; see the file COPYING.  If not, write to the
23;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
24;; Boston, MA 02110-1301, USA.
25
26;;; Commentary:
27
28;;; Code:
29
30;; This file is autoloaded from calc-ext.el.
31
32(require 'calc-ext)
33(require 'calc-macs)
34
35(defvar calc-keypad-buffer nil)
36(defvar calc-keypad-menu 0)
37(defvar calc-keypad-full-layout nil)
38(defvar calc-keypad-input nil)
39(defvar calc-keypad-prev-input nil)
40(defvar calc-keypad-said-hello nil)
41
42;;; |----+----+----+----+----+----|
43;;; |  ENTER  |+/- |EEX |UNDO| <- |
44;;; |-----+---+-+--+--+-+---++----|
45;;; | INV |  7  |  8  |  9  |  /  |
46;;; |-----+-----+-----+-----+-----|
47;;; | HYP |  4  |  5  |  6  |  *  |
48;;; |-----+-----+-----+-----+-----|
49;;; |EXEC |  1  |  2  |  3  |  -  |
50;;; |-----+-----+-----+-----+-----|
51;;; | OFF |  0  |  .  | PI  |  +  |
52;;; |-----+-----+-----+-----+-----|
53(defvar calc-keypad-layout
54  '( ( ( "ENTER" calc-enter calc-roll-down calc-roll-up calc-over )
55       ( "ENTER" calc-enter calc-roll-down calc-roll-up calc-over )
56       ( "+/-"	 calc-change-sign calc-inv (progn -4 calc-pack) )
57       ( "EEX"	 ("e") (progn calc-num-prefix calc-pack-interval)
58                 (progn -5 calc-pack)  )
59       ( "UNDO"	 calc-undo calc-redo calc-last-args )
60       ( "<-"	 calc-pop (progn 0 calc-pop)
61	         (progn calc-num-prefix calc-pop) ) )
62     ( ( "INV"   calc-inverse )
63       ( "7"	 ("7") calc-round )
64       ( "8"	 ("8") (progn 2 calc-clean-num) )
65       ( "9"	 ("9") calc-float )
66       ( "/"	 calc-divide (progn calc-inverse calc-power) ) )
67     ( ( "HYP"   calc-hyperbolic )
68       ( "4"	 ("4") calc-ln calc-log10 )
69       ( "5"	 ("5") calc-exp calc-exp10 )
70       ( "6"	 ("6") calc-abs )
71       ( "*"	 calc-times calc-power ) )
72     ( ( "EXEC"	 calc-keypad-execute )
73       ( "1"	 ("1") calc-arcsin calc-sin )
74       ( "2"	 ("2") calc-arccos calc-cos )
75       ( "3"	 ("3") calc-arctan calc-tan )
76       ( "-"	 calc-minus calc-conj ) )
77     ( ( "OFF"   calc-keypad-off )
78       ( "0"	 ("0") calc-imaginary )
79       ( "."	 (".") calc-precision )
80       ( "PI"	 calc-pi )
81       ( "+"	 calc-plus calc-sqrt ) ) ))
82
83(defvar calc-keypad-menus '( calc-keypad-math-menu
84			     calc-keypad-funcs-menu
85			     calc-keypad-binary-menu
86			     calc-keypad-vector-menu
87			     calc-keypad-modes-menu
88			     calc-keypad-user-menu ) )
89
90;;; |----+----+----+----+----+----|
91;;; |FLR |CEIL|RND |TRNC|CLN2|FLT |
92;;; |----+----+----+----+----+----|
93;;; | LN |EXP |    |ABS |IDIV|MOD |
94;;; |----+----+----+----+----+----|
95;;; |SIN |COS |TAN |SQRT|y^x |1/x |
96
97(defvar calc-keypad-math-menu
98  '( ( ( "FLR"   calc-floor )
99       ( "CEIL"  calc-ceiling )
100       ( "RND"   calc-round )
101       ( "TRNC"  calc-trunc )
102       ( "CLN2"  (progn 2 calc-clean-num) )
103       ( "FLT"   calc-float ) )
104     ( ( "LN"    calc-ln )
105       ( "EXP"   calc-exp )
106       ( ""	 nil )
107       ( "ABS"   calc-abs )
108       ( "IDIV"  calc-idiv )
109       ( "MOD"   calc-mod ) )
110     ( ( "SIN"   calc-sin )
111       ( "COS"   calc-cos )
112       ( "TAN"   calc-tan )
113       ( "SQRT"  calc-sqrt )
114       ( "y^x"   calc-power )
115       ( "1/x"   calc-inv ) ) ))
116
117;;; |----+----+----+----+----+----|
118;;; |IGAM|BETA|IBET|ERF |BESJ|BESY|
119;;; |----+----+----+----+----+----|
120;;; |IMAG|CONJ| RE |ATN2|RAND|RAGN|
121;;; |----+----+----+----+----+----|
122;;; |GCD |FACT|DFCT|BNOM|PERM|NXTP|
123
124(defvar calc-keypad-funcs-menu
125  '( ( ( "IGAM"  calc-inc-gamma )
126       ( "BETA"  calc-beta )
127       ( "IBET"  calc-inc-beta )
128       ( "ERF"   calc-erf )
129       ( "BESJ"  calc-bessel-J )
130       ( "BESY"  calc-bessel-Y ) )
131     ( ( "IMAG"  calc-imaginary )
132       ( "CONJ"  calc-conj )
133       ( "RE"	 calc-re calc-im )
134       ( "ATN2"  calc-arctan2 )
135       ( "RAND"  calc-random )
136       ( "RAGN"  calc-random-again ) )
137     ( ( "GCD"   calc-gcd calc-lcm )
138       ( "FACT"  calc-factorial calc-gamma )
139       ( "DFCT"  calc-double-factorial )
140       ( "BNOM"  calc-choose )
141       ( "PERM"  calc-perm )
142       ( "NXTP"	 calc-next-prime calc-prev-prime ) ) ))
143
144;;; |----+----+----+----+----+----|
145;;; |AND | OR |XOR |NOT |LSH |RSH |
146;;; |----+----+----+----+----+----|
147;;; |DEC |HEX |OCT |BIN |WSIZ|ARSH|
148;;; |----+----+----+----+----+----|
149;;; | A  | B  | C  | D  | E  | F  |
150
151(defvar calc-keypad-binary-menu
152  '( ( ( "AND"   calc-and calc-diff )
153       ( "OR"    calc-or )
154       ( "XOR"   calc-xor )
155       ( "NOT"   calc-not calc-clip )
156       ( "LSH"   calc-lshift-binary calc-rotate-binary )
157       ( "RSH"   calc-rshift-binary ) )
158     ( ( "DEC"   calc-decimal-radix )
159       ( "HEX"   calc-hex-radix )
160       ( "OCT"   calc-octal-radix )
161       ( "BIN"   calc-binary-radix )
162       ( "WSIZ"  calc-word-size )
163       ( "ARSH"  calc-rshift-arith ) )
164     ( ( "A"     ("A") )
165       ( "B"     ("B") )
166       ( "C"     ("C") )
167       ( "D"     ("D") )
168       ( "E"     ("E") )
169       ( "F"     ("F") ) ) ))
170
171;;; |----+----+----+----+----+----|
172;;; |SUM |PROD|MAX |MAP*|MAP^|MAP$|
173;;; |----+----+----+----+----+----|
174;;; |INV |DET |TRN |IDNT|CRSS|"x" |
175;;; |----+----+----+----+----+----|
176;;; |PACK|UNPK|INDX|BLD |LEN |... |
177
178(defvar calc-keypad-vector-menu
179  '( ( ( "SUM"   calc-vector-sum calc-vector-alt-sum calc-vector-mean )
180       ( "PROD"  calc-vector-product nil calc-vector-sdev )
181       ( "MAX"   calc-vector-max calc-vector-min calc-vector-median )
182       ( "MAP*"  (lambda () (interactive)
183		   (calc-map '(2 calcFunc-mul "*"))) )
184       ( "MAP^"  (lambda () (interactive)
185		   (calc-map '(2 calcFunc-pow "^"))) )
186       ( "MAP$"  calc-map-stack ) )
187     ( ( "MINV"  calc-inv )
188       ( "MDET"  calc-mdet )
189       ( "MTRN"  calc-transpose calc-conj-transpose )
190       ( "IDNT"  (progn calc-num-prefix calc-ident) )
191       ( "CRSS"  calc-cross )
192       ( "\"x\"" "\excalc-algebraic-entry\rx\r"
193	         "\excalc-algebraic-entry\ry\r"
194		 "\excalc-algebraic-entry\rz\r"
195		 "\excalc-algebraic-entry\rt\r") )
196     ( ( "PACK"  calc-pack )
197       ( "UNPK"  calc-unpack )
198       ( "INDX"  (progn calc-num-prefix calc-index) "\C-u\excalc-index\r" )
199       ( "BLD"   (progn calc-num-prefix calc-build-vector) )
200       ( "LEN"   calc-vlength )
201       ( "..."   calc-full-vectors ) ) ))
202
203;;; |----+----+----+----+----+----|
204;;; |FLT |FIX |SCI |ENG |GRP |    |
205;;; |----+----+----+----+----+----|
206;;; |RAD |DEG |FRAC|POLR|SYMB|PREC|
207;;; |----+----+----+----+----+----|
208;;; |SWAP|RLL3|RLL4|OVER|STO |RCL |
209
210(defvar calc-keypad-modes-menu
211  '( ( ( "FLT"   calc-normal-notation
212	         (progn calc-num-prefix calc-normal-notation) )
213       ( "FIX"   (progn 2 calc-fix-notation)
214	         (progn calc-num-prefix calc-fix-notation) )
215       ( "SCI"   calc-sci-notation
216	         (progn calc-num-prefix calc-sci-notation) )
217       ( "ENG"   calc-eng-notation
218	         (progn calc-num-prefix calc-eng-notation) )
219       ( "GRP"   calc-group-digits "\C-u-3\excalc-group-digits\r" )
220       ( ""	 nil ) )
221     ( ( "RAD"   calc-radians-mode )
222       ( "DEG"   calc-degrees-mode )
223       ( "FRAC"  calc-frac-mode )
224       ( "POLR"  calc-polar-mode )
225       ( "SYMB"	 calc-symbolic-mode )
226       ( "PREC"  calc-precision ) )
227     ( ( "SWAP"  calc-roll-down )
228       ( "RLL3"  (progn 3 calc-roll-up) (progn 3 calc-roll-down) )
229       ( "RLL4"  (progn 4 calc-roll-up) (progn 4 calc-roll-down) )
230       ( "OVER"  calc-over )
231       ( "STO"   calc-keypad-store )
232       ( "RCL"   calc-keypad-recall ) ) ))
233
234(define-derived-mode calc-keypad-mode fundamental-mode "Calculator"
235  "Major mode for Calc keypad input."
236  (define-key calc-keypad-mode-map " " 'calc-keypad-press)
237  (define-key calc-keypad-mode-map (kbd "RET") 'calc-keypad-press)
238  (define-key calc-keypad-mode-map (kbd "TAB") 'calc-keypad-menu)
239  (define-key calc-keypad-mode-map "q" 'calc-keypad-off)
240  (define-key calc-keypad-mode-map [down-mouse-1] 'ignore)
241  (define-key calc-keypad-mode-map [drag-mouse-1] 'ignore)
242  (define-key calc-keypad-mode-map [double-mouse-1] 'ignore)
243  (define-key calc-keypad-mode-map [triple-mouse-1] 'ignore)
244  (define-key calc-keypad-mode-map [down-mouse-2] 'ignore)
245  (define-key calc-keypad-mode-map [drag-mouse-2] 'ignore)
246  (define-key calc-keypad-mode-map [double-mouse-2] 'ignore)
247  (define-key calc-keypad-mode-map [triple-mouse-2] 'ignore)
248  (define-key calc-keypad-mode-map [down-mouse-3] 'ignore)
249  (define-key calc-keypad-mode-map [drag-mouse-3] 'ignore)
250  (define-key calc-keypad-mode-map [double-mouse-3] 'ignore)
251  (define-key calc-keypad-mode-map [triple-mouse-3] 'ignore)
252  (define-key calc-keypad-mode-map [mouse-3] 'calc-keypad-right-click)
253  (define-key calc-keypad-mode-map [mouse-2] 'calc-keypad-middle-click)
254  (define-key calc-keypad-mode-map [mouse-1] 'calc-keypad-left-click)
255  (put 'calc-keypad-mode 'mode-class 'special)
256  (make-local-variable 'calc-main-buffer))
257
258(defun calc-do-keypad (&optional full-display interactive)
259  (calc-create-buffer)
260  (let ((calcbuf (current-buffer)))
261    (unless (bufferp calc-keypad-buffer)
262      (set-buffer (setq calc-keypad-buffer (get-buffer-create "*Calc Keypad*")))
263      (calc-keypad-mode)
264      (setq calc-main-buffer calcbuf)
265      (calc-keypad-redraw)
266      (calc-trail-buffer))
267    (let ((width 29)
268	  (height 17)
269	  win old-win)
270      (if (setq win (get-buffer-window "*Calculator*"))
271	  (delete-window win))
272      (if (setq win (get-buffer-window "*Calc Trail*"))
273	  (if (one-window-p)
274	      (switch-to-buffer (other-buffer))
275	    (delete-window win)))
276      (if (setq win (get-buffer-window calc-keypad-buffer))
277	  (progn
278	    (bury-buffer "*Calculator*")
279	    (bury-buffer "*Calc Trail*")
280	    (bury-buffer calc-keypad-buffer)
281	    (if (one-window-p)
282		(switch-to-buffer (other-buffer))
283	      (delete-window win)))
284	(setq calc-was-keypad-mode t
285	      old-win (get-largest-window))
286	(if (or (< (window-height old-win) (+ height 6))
287		(< (window-width old-win) (+ width 15))
288		full-display)
289	    (delete-other-windows old-win))
290	(if (< (window-height old-win) (+ height 4))
291	    (error "Screen is not tall enough for this mode"))
292	(if full-display
293	    (progn
294	      (setq win (split-window old-win (- (window-height old-win)
295						 height 1)))
296	      (set-window-buffer old-win (calc-trail-buffer))
297	      (set-window-buffer win calc-keypad-buffer)
298	      (set-window-start win 1)
299	      (setq win (split-window win (+ width 7) t))
300	      (set-window-buffer win calcbuf))
301	  (if (or t  ; left-side keypad not yet fully implemented
302		  (< (save-excursion
303		       (set-buffer (window-buffer old-win))
304		       (current-column))
305		     (/ (window-width) 2)))
306	      (setq win (split-window old-win (- (window-width old-win)
307						 width 2)
308				      t))
309	    (setq old-win (split-window old-win (+ width 2) t)))
310	  (set-window-buffer win calc-keypad-buffer)
311	  (set-window-start win 1)
312	  (split-window win (- (window-height win) height 1))
313	  (set-window-buffer win calcbuf))
314	(select-window old-win)
315	(message "Welcome to GNU Emacs Calc!  Use the left and right mouse buttons")
316	(run-hooks 'calc-keypad-start-hook)
317	(and calc-keypad-said-hello interactive
318	     (progn
319	       (sit-for 2)
320	       (message "")))
321	(setq calc-keypad-said-hello t)))
322    (setq calc-keypad-input nil)))
323
324(defun calc-keypad-off ()
325  (interactive)
326  (if calc-standalone-flag
327      (save-buffers-kill-emacs nil)
328    (calc-keypad)))
329
330(defun calc-keypad-redraw ()
331  (set-buffer calc-keypad-buffer)
332  (setq buffer-read-only t)
333  (setq calc-keypad-full-layout (append (symbol-value (nth calc-keypad-menu
334							   calc-keypad-menus))
335					calc-keypad-layout))
336  (let ((buffer-read-only nil)
337	(row calc-keypad-full-layout)
338	(y 0))
339    (erase-buffer)
340    (insert "\n")
341    (while row
342      (let ((col (car row)))
343	(while col
344	  (let* ((key (car col))
345		 (cwid (if (>= y 4)
346			   5
347			 (if (and (= y 3) (eq col (car row)))
348			     (progn (setq col (cdr col)) 9)
349			   4)))
350		 (name (if (and calc-standalone-flag
351				(eq (nth 1 key) 'calc-keypad-off))
352			   "EXIT"
353			 (if (> (length (car key)) cwid)
354			     (substring (car key) 0 cwid)
355			   (car key))))
356		 (wid (length name))
357		 (pad (- cwid (/ wid 2))))
358	    (insert (make-string (/ (- cwid wid) 2) 32)
359		    name
360		    (make-string (/ (- cwid wid -1) 2) 32)
361		    (if (equal name "MENU")
362			(int-to-string (1+ calc-keypad-menu))
363		      "|")))
364	  (or (setq col (cdr col))
365	      (insert "\n")))
366	(insert (if (>= y 4)
367		    "-----+-----+-----+-----+-----"
368		  (if (= y 3)
369		      "-----+---+-+--+--+-+---++----"
370		    "----+----+----+----+----+----"))
371		(if (= y 7) "+\n" "|\n"))
372	(setq y (1+ y)
373	      row (cdr row)))))
374  (setq calc-keypad-prev-input t)
375  (calc-keypad-show-input)
376  (goto-char (point-min)))
377
378(defun calc-keypad-show-input ()
379  (or (equal calc-keypad-input calc-keypad-prev-input)
380      (let ((buffer-read-only nil))
381	(save-excursion
382	  (goto-char (point-min))
383	  (forward-line 1)
384	  (delete-region (point-min) (point))
385	  (if calc-keypad-input
386	      (insert "Calc: " calc-keypad-input "\n")
387	    (insert "----+-----Calc " calc-version " -----+----"
388		    (int-to-string (1+ calc-keypad-menu))
389		    "\n")))))
390  (setq calc-keypad-prev-input calc-keypad-input))
391
392(defun calc-keypad-press ()
393  (interactive)
394  (unless (eq major-mode 'calc-keypad-mode)
395    (error "Must be in *Calc Keypad* buffer for this command"))
396  (let* ((row (save-excursion
397		(beginning-of-line)
398		(count-lines (point-min) (point))))
399	 (y (/ row 2))
400	 (x (/ (current-column) (if (>= y 4) 6 5)))
401	 radix frac inv
402	 (hyp (with-current-buffer calc-main-buffer
403		(setq radix calc-number-radix
404		      frac calc-prefer-frac
405		      inv calc-inverse-flag)
406		calc-hyperbolic-flag))
407	 (invhyp t)
408	 (menu (symbol-value (nth calc-keypad-menu calc-keypad-menus)))
409	 (input calc-keypad-input)
410	 (iexpon (and input
411		      (or (string-match "\\*[0-9]+\\.\\^" input)
412			  (and (<= radix 14) (string-match "e" input)))
413		      (match-end 0)))
414	 (key (nth x (nth y calc-keypad-full-layout)))
415	 (cmd (or (nth (if inv (if hyp 4 2) (if hyp 3 99)) key)
416		  (setq invhyp nil)
417		  (nth 1 key)))
418	 (isstring (and (consp cmd) (stringp (car cmd))))
419	 (calc-is-keypad-press t))
420    (if invhyp (calc-wrapper))  ; clear Inv and Hyp flags
421    (unwind-protect
422	(cond ((or (null cmd)
423		   (= (% row 2) 0))
424	       (beep))
425	      ((and (> (minibuffer-depth) 0))
426	       (cond (isstring
427		      (push (aref (car cmd) 0) unread-command-events))
428		     ((eq cmd 'calc-pop)
429		      (push ?\177 unread-command-events))
430		     ((eq cmd 'calc-enter)
431		      (push 13 unread-command-events))
432		     ((eq cmd 'calc-undo)
433		      (push 7 unread-command-events))
434		     (t
435		      (beep))))
436	      ((and input (string-match "STO\\|RCL" input))
437	       (cond ((and isstring (string-match "[0-9]" (car cmd)))
438		      (setq calc-keypad-input nil)
439		      (let ((var (intern (concat "var-q" (car cmd)))))
440			(cond ((equal input "STO+") (calc-store-plus var))
441			      ((equal input "STO-") (calc-store-minus var))
442			      ((equal input "STO*") (calc-store-times var))
443			      ((equal input "STO/") (calc-store-div var))
444			      ((equal input "STO^") (calc-store-power var))
445			      ((equal input "STOn") (calc-store-neg 1 var))
446			      ((equal input "STO&") (calc-store-inv 1 var))
447			      ((equal input "STO") (calc-store-into var))
448			      (t (calc-recall var)))))
449		     ((memq cmd '(calc-pop calc-undo))
450		      (setq calc-keypad-input nil))
451		     ((and (equal input "STO")
452			   (setq frac (assq cmd '( ( calc-plus . "+" )
453						   ( calc-minus . "-" )
454						   ( calc-times . "*" )
455						   ( calc-divide . "/" )
456						   ( calc-power . "^")
457						   ( calc-change-sign . "n")
458						   ( calc-inv . "&") ))))
459		      (setq calc-keypad-input (concat input (cdr frac))))
460		     (t
461		      (beep))))
462	      (isstring
463	       (setq cmd (car cmd))
464	       (if (or (and (equal cmd ".")
465			    input
466			    (string-match "[.:e^]" input))
467		       (and (equal cmd "e")
468			    input
469			    (or (and (<= radix 14) (string-match "e" input))
470				(string-match "\\^\\|[-.:]\\'" input)))
471		       (and (not (equal cmd "."))
472			    (let ((case-fold-search nil))
473			      (string-match cmd "0123456789ABCDEF"
474					    (if (string-match
475						 "[e^]" (or input ""))
476						10 radix)))))
477		   (beep)
478		 (setq calc-keypad-input (concat
479					  (and (/= radix 10)
480					       (or (not input)
481						   (equal input "-"))
482					       (format "%d#" radix))
483					  (and (or (not input)
484						   (equal input "-"))
485					       (or (and (equal cmd "e") "1")
486						   (and (equal cmd ".")
487							(if frac "1" "0"))))
488					  input
489					  (if (and (equal cmd ".") frac)
490					      ":"
491					    (if (and (equal cmd "e")
492						     (or (not input)
493							 (string-match
494							  "#" input))
495						     (> radix 14))
496						(format "*%d.^" radix)
497					      cmd))))))
498	      ((and (eq cmd 'calc-change-sign)
499		    input)
500	       (let* ((epos (or iexpon 0))
501		      (suffix (substring input epos)))
502		 (setq calc-keypad-input (concat
503					  (substring input 0 epos)
504					  (if (string-match "\\`-" suffix)
505					      (substring suffix 1)
506					    (concat "-" suffix))))))
507	      ((and (eq cmd 'calc-pop)
508		    input)
509	       (if (equal input "")
510		   (beep)
511		 (setq calc-keypad-input (substring input 0
512						    (or (string-match
513							 "\\*[0-9]+\\.\\^\\'"
514							 input)
515							-1)))))
516	      ((and (eq cmd 'calc-undo)
517		    input)
518	       (setq calc-keypad-input nil))
519	      (t
520	       (if input
521		   (let ((val (math-read-number input)))
522		     (setq calc-keypad-input nil)
523		     (if val
524			 (calc-wrapper
525			  (calc-push-list (list (calc-record
526						 (calc-normalize val)))))
527		       (or (equal input "")
528			   (beep))
529		       (setq cmd nil))
530		     (if (eq cmd 'calc-enter) (setq cmd nil))))
531	       (setq prefix-arg current-prefix-arg)
532	       (if cmd
533		   (if (and (consp cmd) (eq (car cmd) 'progn))
534		       (while (setq cmd (cdr cmd))
535			 (if (integerp (car cmd))
536			     (setq prefix-arg (car cmd))
537			   (command-execute (car cmd))))
538		     (command-execute cmd)))))
539      (set-buffer calc-keypad-buffer)
540      (calc-keypad-show-input))))
541
542(defun calc-keypad-left-click (event)
543  "Handle a left-button mouse click in Calc Keypad window."
544  (interactive "e")
545  (with-current-buffer calc-keypad-buffer
546    (goto-char (posn-point (event-start event)))
547    (calc-keypad-press)))
548
549(defun calc-keypad-right-click (event)
550  "Handle a right-button mouse click in Calc Keypad window."
551  (interactive "e")
552  (save-excursion
553    (set-buffer calc-keypad-buffer)
554    (calc-keypad-menu)))
555
556(defun calc-keypad-middle-click (event)
557  "Handle a middle-button mouse click in Calc Keypad window."
558  (interactive "e")
559  (with-current-buffer calc-keypad-buffer
560    (calc-keypad-menu-back)))
561
562(defun calc-keypad-menu ()
563  (interactive)
564  (unless (eq major-mode 'calc-keypad-mode)
565    (error "Must be in *Calc Keypad* buffer for this command"))
566  (while (progn (setq calc-keypad-menu (% (1+ calc-keypad-menu)
567					  (length calc-keypad-menus)))
568		(not (symbol-value (nth calc-keypad-menu calc-keypad-menus)))))
569  (calc-keypad-redraw))
570
571(defun calc-keypad-menu-back ()
572  (interactive)
573  (or (eq major-mode 'calc-keypad-mode)
574      (error "Must be in *Calc Keypad* buffer for this command"))
575  (while (progn (setq calc-keypad-menu (% (1- (+ calc-keypad-menu
576						 (length calc-keypad-menus)))
577					  (length calc-keypad-menus)))
578		(not (symbol-value (nth calc-keypad-menu calc-keypad-menus)))))
579  (calc-keypad-redraw))
580
581(defun calc-keypad-store ()
582  (interactive)
583  (setq calc-keypad-input "STO"))
584
585(defun calc-keypad-recall ()
586  (interactive)
587  (setq calc-keypad-input "RCL"))
588
589(defun calc-pack-interval (mode)
590  (interactive "p")
591  (if (or (< mode 0) (> mode 3))
592      (error "Open/close code should be in the range from 0 to 3"))
593  (calc-pack (- -6 mode)))
594
595(defun calc-keypad-execute ()
596  (interactive)
597  (let* ((prompt "Calc keystrokes: ")
598	 (flush 'x-flush-mouse-queue)
599	 (prefix nil)
600	 keys cmd)
601    (save-excursion
602      (calc-select-buffer)
603      (while (progn
604	       (setq keys (read-key-sequence prompt))
605	       (setq cmd (key-binding keys))
606	       (if (or (memq cmd '(calc-inverse
607				   calc-hyperbolic
608				   universal-argument
609				   digit-argument
610				   negative-argument))
611		       (and prefix (string-match "\\`\e?[-0-9]\\'" keys)))
612		   (progn
613		     (setq last-command-char (aref keys (1- (length keys))))
614		     (command-execute cmd)
615		     (setq flush 'not-any-more
616			   prefix t
617			   prompt (concat prompt (key-description keys) " ")))
618		 (eq cmd flush)))))  ; skip mouse-up event
619    (message "")
620    (if (commandp cmd)
621	(command-execute cmd)
622      (error "Not a Calc command: %s" (key-description keys)))))
623
624(provide 'calc-keypd)
625
626;;; arch-tag: 4ba0d360-2bb6-40b8-adfa-eb373765b3f9
627;;; calc-keypd.el ends here
628