lisp/calc/calc-keypd.el

   1 ;;; calc-keypd.el --- mouse-capable keypad input for Calc
   2
   3 ;; Copyright (C) 1990-1993, 2001-2017 Free Software Foundation, Inc.
   4
   5 ;; Author: David Gillespie <daveg@synaptics.com>
   6
   7 ;; This file is part of GNU Emacs.
   8
   9 ;; GNU Emacs is free software: you can redistribute it and/or modify
  10 ;; it under the terms of the GNU General Public License as published by
  11 ;; the Free Software Foundation, either version 3 of the License, or
  12 ;; (at your option) any later version.
  13
  14 ;; GNU Emacs is distributed in the hope that it will be useful,
  15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 ;; GNU General Public License for more details.
  18
  19 ;; You should have received a copy of the GNU General Public License
  20 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  21
  22 ;;; Commentary:
  23
  24 ;;; Code:
  25
  26 ;; This file is autoloaded from calc-ext.el.
  27
  28 (require 'calc-ext)
  29 (require 'calc-macs)
  30
  31 (defvar calc-keypad-buffer nil)
  32 (defvar calc-keypad-menu 0)
  33 (defvar calc-keypad-full-layout nil)
  34 (defvar calc-keypad-input nil)
  35 (defvar calc-keypad-prev-input nil)
  36 (defvar calc-keypad-said-hello nil)
  37
  38 ;;; |----+----+----+----+----+----|
  39 ;;; |  ENTER  |+/- |EEX |UNDO| <- |
  40 ;;; |-----+---+-+--+--+-+---++----|
  41 ;;; | INV |  7  |  8  |  9  |  /  |
  42 ;;; |-----+-----+-----+-----+-----|
  43 ;;; | HYP |  4  |  5  |  6  |  *  |
  44 ;;; |-----+-----+-----+-----+-----|
  45 ;;; |EXEC |  1  |  2  |  3  |  -  |
  46 ;;; |-----+-----+-----+-----+-----|
  47 ;;; | OFF |  0  |  .  | PI  |  +  |
  48 ;;; |-----+-----+-----+-----+-----|
  49 (defvar calc-keypad-layout
  50   '( ( ( "ENTER" calc-enter calc-roll-down calc-roll-up calc-over )
  51        ( "ENTER" calc-enter calc-roll-down calc-roll-up calc-over )
  52        ( "+/-"   calc-change-sign calc-inv (progn -4 calc-pack) )
  53        ( "EEX"   ("e") (progn calc-num-prefix calc-pack-interval)
  54                  (progn -5 calc-pack)  )
  55        ( "UNDO"  calc-undo calc-redo calc-last-args )
  56        ( "<-"    calc-pop (progn 0 calc-pop)
  57                  (progn calc-num-prefix calc-pop) ) )
  58      ( ( "INV"   calc-inverse )
  59        ( "7"     ("7") calc-round )
  60        ( "8"     ("8") (progn 2 calc-clean-num) )
  61        ( "9"     ("9") calc-float )
  62        ( "/"     calc-divide (progn calc-inverse calc-power) ) )
  63      ( ( "HYP"   calc-hyperbolic )
  64        ( "4"     ("4") calc-ln calc-log10 )
  65        ( "5"     ("5") calc-exp calc-exp10 )
  66        ( "6"     ("6") calc-abs )
  67        ( "*"     calc-times calc-power ) )
  68      ( ( "EXEC"  calc-keypad-execute )
  69        ( "1"     ("1") calc-arcsin calc-sin )
  70        ( "2"     ("2") calc-arccos calc-cos )
  71        ( "3"     ("3") calc-arctan calc-tan )
  72        ( "-"     calc-minus calc-conj ) )
  73      ( ( "OFF"   calc-keypad-off )
  74        ( "0"     ("0") calc-imaginary )
  75        ( "."     (".") calc-precision )
  76        ( "PI"    calc-pi )
  77        ( "+"     calc-plus calc-sqrt ) ) ))
  78
  79 (defvar calc-keypad-menus '( calc-keypad-math-menu
  80                              calc-keypad-funcs-menu
  81                              calc-keypad-binary-menu
  82                              calc-keypad-vector-menu
  83                              calc-keypad-modes-menu
  84                              calc-keypad-user-menu ) )
  85
  86 ;;; |----+----+----+----+----+----|
  87 ;;; |FLR |CEIL|RND |TRNC|CLN2|FLT |
  88 ;;; |----+----+----+----+----+----|
  89 ;;; | LN |EXP |    |ABS |IDIV|MOD |
  90 ;;; |----+----+----+----+----+----|
  91 ;;; |SIN |COS |TAN |SQRT|y^x |1/x |
  92
  93 (defvar calc-keypad-math-menu
  94   '( ( ( "FLR"   calc-floor )
  95        ( "CEIL"  calc-ceiling )
  96        ( "RND"   calc-round )
  97        ( "TRNC"  calc-trunc )
  98        ( "CLN2"  (progn 2 calc-clean-num) )
  99        ( "FLT"   calc-float ) )
 100      ( ( "LN"    calc-ln )
 101        ( "EXP"   calc-exp )
 102        ( ""      nil )
 103        ( "ABS"   calc-abs )
 104        ( "IDIV"  calc-idiv )
 105        ( "MOD"   calc-mod ) )
 106      ( ( "SIN"   calc-sin )
 107        ( "COS"   calc-cos )
 108        ( "TAN"   calc-tan )
 109        ( "SQRT"  calc-sqrt )
 110        ( "y^x"   calc-power )
 111        ( "1/x"   calc-inv ) ) ))
 112
 113 ;;; |----+----+----+----+----+----|
 114 ;;; |IGAM|BETA|IBET|ERF |BESJ|BESY|
 115 ;;; |----+----+----+----+----+----|
 116 ;;; |IMAG|CONJ| RE |ATN2|RAND|RAGN|
 117 ;;; |----+----+----+----+----+----|
 118 ;;; |GCD |FACT|DFCT|BNOM|PERM|NXTP|
 119
 120 (defvar calc-keypad-funcs-menu
 121   '( ( ( "IGAM"  calc-inc-gamma )
 122        ( "BETA"  calc-beta )
 123        ( "IBET"  calc-inc-beta )
 124        ( "ERF"   calc-erf )
 125        ( "BESJ"  calc-bessel-J )
 126        ( "BESY"  calc-bessel-Y ) )
 127      ( ( "IMAG"  calc-imaginary )
 128        ( "CONJ"  calc-conj )
 129        ( "RE"    calc-re calc-im )
 130        ( "ATN2"  calc-arctan2 )
 131        ( "RAND"  calc-random )
 132        ( "RAGN"  calc-random-again ) )
 133      ( ( "GCD"   calc-gcd calc-lcm )
 134        ( "FACT"  calc-factorial calc-gamma )
 135        ( "DFCT"  calc-double-factorial )
 136        ( "BNOM"  calc-choose )
 137        ( "PERM"  calc-perm )
 138        ( "NXTP"  calc-next-prime calc-prev-prime ) ) ))
 139
 140 ;;; |----+----+----+----+----+----|
 141 ;;; |AND | OR |XOR |NOT |LSH |RSH |
 142 ;;; |----+----+----+----+----+----|
 143 ;;; |DEC |HEX |OCT |BIN |WSIZ|ARSH|
 144 ;;; |----+----+----+----+----+----|
 145 ;;; | A  | B  | C  | D  | E  | F  |
 146
 147 (defvar calc-keypad-binary-menu
 148   '( ( ( "AND"   calc-and calc-diff )
 149        ( "OR"    calc-or )
 150        ( "XOR"   calc-xor )
 151        ( "NOT"   calc-not calc-clip )
 152        ( "LSH"   calc-lshift-binary calc-rotate-binary )
 153        ( "RSH"   calc-rshift-binary ) )
 154      ( ( "DEC"   calc-decimal-radix )
 155        ( "HEX"   calc-hex-radix )
 156        ( "OCT"   calc-octal-radix )
 157        ( "BIN"   calc-binary-radix )
 158        ( "WSIZ"  calc-word-size )
 159        ( "ARSH"  calc-rshift-arith ) )
 160      ( ( "A"     ("A") )
 161        ( "B"     ("B") )
 162        ( "C"     ("C") )
 163        ( "D"     ("D") )
 164        ( "E"     ("E") )
 165        ( "F"     ("F") ) ) ))
 166
 167 ;;; |----+----+----+----+----+----|
 168 ;;; |SUM |PROD|MAX |MAP*|MAP^|MAP$|
 169 ;;; |----+----+----+----+----+----|
 170 ;;; |INV |DET |TRN |IDNT|CRSS|"x" |
 171 ;;; |----+----+----+----+----+----|
 172 ;;; |PACK|UNPK|INDX|BLD |LEN |... |
 173
 174 (defvar calc-keypad-vector-menu
 175   '( ( ( "SUM"   calc-vector-sum calc-vector-alt-sum calc-vector-mean )
 176        ( "PROD"  calc-vector-product nil calc-vector-sdev )
 177        ( "MAX"   calc-vector-max calc-vector-min calc-vector-median )
 178        ( "MAP*"  (lambda () (interactive)
 179                    (calc-map '(2 calcFunc-mul "*"))) )
 180        ( "MAP^"  (lambda () (interactive)
 181                    (calc-map '(2 calcFunc-pow "^"))) )
 182        ( "MAP$"  calc-map-stack ) )
 183      ( ( "MINV"  calc-inv )
 184        ( "MDET"  calc-mdet )
 185        ( "MTRN"  calc-transpose calc-conj-transpose )
 186        ( "IDNT"  (progn calc-num-prefix calc-ident) )
 187        ( "CRSS"  calc-cross )
 188        ( "\"x\"" "\excalc-algebraic-entry\rx\r"
 189                  "\excalc-algebraic-entry\ry\r"
 190                  "\excalc-algebraic-entry\rz\r"
 191                  "\excalc-algebraic-entry\rt\r") )
 192      ( ( "PACK"  calc-pack )
 193        ( "UNPK"  calc-unpack )
 194        ( "INDX"  (progn calc-num-prefix calc-index) "\C-u\excalc-index\r" )
 195        ( "BLD"   (progn calc-num-prefix calc-build-vector) )
 196        ( "LEN"   calc-vlength )
 197        ( "..."   calc-full-vectors ) ) ))
 198
 199 ;;; |----+----+----+----+----+----|
 200 ;;; |FLT |FIX |SCI |ENG |GRP |    |
 201 ;;; |----+----+----+----+----+----|
 202 ;;; |RAD |DEG |FRAC|POLR|SYMB|PREC|
 203 ;;; |----+----+----+----+----+----|
 204 ;;; |SWAP|RLL3|RLL4|OVER|STO |RCL |
 205
 206 (defvar calc-keypad-modes-menu
 207   '( ( ( "FLT"   calc-normal-notation
 208                  (progn calc-num-prefix calc-normal-notation) )
 209        ( "FIX"   (progn 2 calc-fix-notation)
 210                  (progn calc-num-prefix calc-fix-notation) )
 211        ( "SCI"   calc-sci-notation
 212                  (progn calc-num-prefix calc-sci-notation) )
 213        ( "ENG"   calc-eng-notation
 214                  (progn calc-num-prefix calc-eng-notation) )
 215        ( "GRP"   calc-group-digits "\C-u-3\excalc-group-digits\r" )
 216        ( ""      nil ) )
 217      ( ( "RAD"   calc-radians-mode )
 218        ( "DEG"   calc-degrees-mode )
 219        ( "FRAC"  calc-frac-mode )
 220        ( "POLR"  calc-polar-mode )
 221        ( "SYMB"  calc-symbolic-mode )
 222        ( "PREC"  calc-precision ) )
 223      ( ( "SWAP"  calc-roll-down )
 224        ( "RLL3"  (progn 3 calc-roll-up) (progn 3 calc-roll-down) )
 225        ( "RLL4"  (progn 4 calc-roll-up) (progn 4 calc-roll-down) )
 226        ( "OVER"  calc-over )
 227        ( "STO"   calc-keypad-store )
 228        ( "RCL"   calc-keypad-recall ) ) ))
 229
 230 (define-derived-mode calc-keypad-mode fundamental-mode "Calculator"
 231   "Major mode for Calc keypad input."
 232   (define-key calc-keypad-mode-map " " 'calc-keypad-press)
 233   (define-key calc-keypad-mode-map (kbd "RET") 'calc-keypad-press)
 234   (define-key calc-keypad-mode-map (kbd "TAB") 'calc-keypad-menu)
 235   (define-key calc-keypad-mode-map "q" 'calc-keypad-off)
 236   (define-key calc-keypad-mode-map [down-mouse-1] 'ignore)
 237   (define-key calc-keypad-mode-map [drag-mouse-1] 'ignore)
 238   (define-key calc-keypad-mode-map [double-mouse-1] 'ignore)
 239   (define-key calc-keypad-mode-map [triple-mouse-1] 'ignore)
 240   (define-key calc-keypad-mode-map [down-mouse-2] 'ignore)
 241   (define-key calc-keypad-mode-map [drag-mouse-2] 'ignore)
 242   (define-key calc-keypad-mode-map [double-mouse-2] 'ignore)
 243   (define-key calc-keypad-mode-map [triple-mouse-2] 'ignore)
 244   (define-key calc-keypad-mode-map [down-mouse-3] 'ignore)
 245   (define-key calc-keypad-mode-map [drag-mouse-3] 'ignore)
 246   (define-key calc-keypad-mode-map [double-mouse-3] 'ignore)
 247   (define-key calc-keypad-mode-map [triple-mouse-3] 'ignore)
 248   (define-key calc-keypad-mode-map [mouse-3] 'calc-keypad-right-click)
 249   (define-key calc-keypad-mode-map [mouse-2] 'calc-keypad-middle-click)
 250   (define-key calc-keypad-mode-map [mouse-1] 'calc-keypad-left-click)
 251   (put 'calc-keypad-mode 'mode-class 'special)
 252   (make-local-variable 'calc-main-buffer))
 253
 254 (defun calc-do-keypad (&optional full-display interactive)
 255   (calc-create-buffer)
 256   (let ((calcbuf (current-buffer)))
 257     (unless (bufferp calc-keypad-buffer)
 258       (set-buffer (setq calc-keypad-buffer (get-buffer-create "*Calc Keypad*")))
 259       (calc-keypad-mode)
 260       (setq calc-main-buffer calcbuf)
 261       (calc-keypad-redraw)
 262       (calc-trail-buffer))
 263     (let ((width 29)
 264           (height 17)
 265           win old-win)
 266       (if (setq win (get-buffer-window "*Calculator*"))
 267           (delete-window win))
 268       (if (setq win (get-buffer-window "*Calc Trail*"))
 269           (if (one-window-p)
 270               (switch-to-buffer (other-buffer))
 271             (delete-window win)))
 272       (if (setq win (get-buffer-window calc-keypad-buffer))
 273           (progn
 274             (bury-buffer "*Calculator*")
 275             (bury-buffer "*Calc Trail*")
 276             (bury-buffer calc-keypad-buffer)
 277             (if (one-window-p)
 278                 (switch-to-buffer (other-buffer))
 279               (delete-window win)))
 280         (setq calc-was-keypad-mode t
 281               old-win (get-largest-window))
 282         (if (or (< (window-height old-win) (+ height 6))
 283                 (< (window-width old-win) (+ width 15))
 284                 full-display)
 285             (delete-other-windows old-win))
 286         (if (< (window-height old-win) (+ height 4))
 287             (error "Screen is not tall enough for this mode"))
 288         (if full-display
 289             (progn
 290               (setq win (split-window old-win (- (window-height old-win)
 291                                                  height 1)))
 292               (set-window-buffer old-win (calc-trail-buffer))
 293               (set-window-buffer win calc-keypad-buffer)
 294               (set-window-start win 1)
 295               (setq win (split-window win (+ width 7) t))
 296               (set-window-buffer win calcbuf))
 297           (if (or t  ; left-side keypad not yet fully implemented
 298                   (< (with-current-buffer (window-buffer old-win)
 299                        (current-column))
 300                      (/ (window-width) 2)))
 301               (setq win (split-window old-win (- (window-width old-win)
 302                                                  width 2)
 303                                       t))
 304             (setq old-win (split-window old-win (+ width 2) t)))
 305           (set-window-buffer win calc-keypad-buffer)
 306           (set-window-start win 1)
 307           (split-window win (- (window-height win) height 1))
 308           (set-window-buffer win calcbuf))
 309         (select-window old-win)
 310         (message "Welcome to GNU Emacs Calc!  Use the left and right mouse buttons")
 311         (run-hooks 'calc-keypad-start-hook)
 312         (and calc-keypad-said-hello interactive
 313              (progn
 314                (sit-for 2)
 315                (message "")))
 316         (setq calc-keypad-said-hello t)))
 317     (setq calc-keypad-input nil)))
 318
 319 (defun calc-keypad-off ()
 320   (interactive)
 321   (if calc-standalone-flag
 322       (save-buffers-kill-emacs nil)
 323     (calc-keypad)))
 324
 325 (defun calc-keypad-redraw ()
 326   (set-buffer calc-keypad-buffer)
 327   (setq buffer-read-only t)
 328   (setq calc-keypad-full-layout (append (symbol-value (nth calc-keypad-menu
 329                                                            calc-keypad-menus))
 330                                         calc-keypad-layout))
 331   (let ((buffer-read-only nil)
 332         (row calc-keypad-full-layout)
 333         (y 0))
 334     (erase-buffer)
 335     (insert "\n")
 336     (while row
 337       (let ((col (car row)))
 338         (while col
 339           (let* ((key (car col))
 340                  (cwid (if (>= y 4)
 341                            5
 342                          (if (and (= y 3) (eq col (car row)))
 343                              (progn (setq col (cdr col)) 9)
 344                            4)))
 345                  (name (if (and calc-standalone-flag
 346                                 (eq (nth 1 key) 'calc-keypad-off))
 347                            "EXIT"
 348                          (if (> (length (car key)) cwid)
 349                              (substring (car key) 0 cwid)
 350                            (car key))))
 351                  (wid (length name)))
 352             (insert (make-string (/ (- cwid wid) 2) 32)
 353                     name
 354                     (make-string (/ (- cwid wid -1) 2) 32)
 355                     (if (equal name "MENU")
 356                         (int-to-string (1+ calc-keypad-menu))
 357                       "|")))
 358           (or (setq col (cdr col))
 359               (insert "\n")))
 360         (insert (if (>= y 4)
 361                     "-----+-----+-----+-----+-----"
 362                   (if (= y 3)
 363                       "-----+---+-+--+--+-+---++----"
 364                     "----+----+----+----+----+----"))
 365                 (if (= y 7) "+\n" "|\n"))
 366         (setq y (1+ y)
 367               row (cdr row)))))
 368   (setq calc-keypad-prev-input t)
 369   (calc-keypad-show-input)
 370   (goto-char (point-min)))
 371
 372 (defun calc-keypad-show-input ()
 373   (or (equal calc-keypad-input calc-keypad-prev-input)
 374       (let ((buffer-read-only nil))
 375         (save-excursion
 376           (goto-char (point-min))
 377           (forward-line 1)
 378           (delete-region (point-min) (point))
 379           (if calc-keypad-input
 380               (insert "Calc: " calc-keypad-input "\n")
 381             (insert "----+----+--Calc---+----+----"
 382                     (int-to-string (1+ calc-keypad-menu))
 383                     "\n")))))
 384   (setq calc-keypad-prev-input calc-keypad-input))
 385
 386 (defun calc-keypad-press ()
 387   (interactive)
 388   (unless (eq major-mode 'calc-keypad-mode)
 389     (error "Must be in *Calc Keypad* buffer for this command"))
 390   (let* ((row (count-lines (point-min) (point-at-bol)))
 391          (y (/ row 2))
 392          (x (/ (current-column) (if (>= y 4) 6 5)))
 393          radix frac inv
 394          (hyp (with-current-buffer calc-main-buffer
 395                 (setq radix calc-number-radix
 396                       frac calc-prefer-frac
 397                       inv calc-inverse-flag)
 398                 calc-hyperbolic-flag))
 399          (invhyp t)
 400          (input calc-keypad-input)
 401          (iexpon (and input
 402                       (or (string-match "\\*[0-9]+\\.\\^" input)
 403                           (and (<= radix 14) (string-match "e" input)))
 404                       (match-end 0)))
 405          (key (nth x (nth y calc-keypad-full-layout)))
 406          (cmd (or (nth (if inv (if hyp 4 2) (if hyp 3 99)) key)
 407                   (setq invhyp nil)
 408                   (nth 1 key)))
 409          (isstring (and (consp cmd) (stringp (car cmd))))
 410          (calc-is-keypad-press t))
 411     (if invhyp (calc-wrapper))  ; clear Inv and Hyp flags
 412     (unwind-protect
 413         (cond ((or (null cmd)
 414                    (= (% row 2) 0))
 415                (beep))
 416               ((and (> (minibuffer-depth) 0))
 417                (cond (isstring
 418                       (push (aref (car cmd) 0) unread-command-events))
 419                      ((eq cmd 'calc-pop)
 420                       (push ?\177 unread-command-events))
 421                      ((eq cmd 'calc-enter)
 422                       (push 13 unread-command-events))
 423                      ((eq cmd 'calc-undo)
 424                       (push 7 unread-command-events))
 425                      (t
 426                       (beep))))
 427               ((and input (string-match "STO\\|RCL" input))
 428                (cond ((and isstring (string-match "[0-9]" (car cmd)))
 429                       (setq calc-keypad-input nil)
 430                       (let ((var (intern (concat "var-q" (car cmd)))))
 431                         (cond ((equal input "STO+") (calc-store-plus var))
 432                               ((equal input "STO-") (calc-store-minus var))
 433                               ((equal input "STO*") (calc-store-times var))
 434                               ((equal input "STO/") (calc-store-div var))
 435                               ((equal input "STO^") (calc-store-power var))
 436                               ((equal input "STOn") (calc-store-neg 1 var))
 437                               ((equal input "STO&") (calc-store-inv 1 var))
 438                               ((equal input "STO") (calc-store-into var))
 439                               (t (calc-recall var)))))
 440                      ((memq cmd '(calc-pop calc-undo))
 441                       (setq calc-keypad-input nil))
 442                      ((and (equal input "STO")
 443                            (setq frac (assq cmd '( ( calc-plus . "+" )
 444                                                    ( calc-minus . "-" )
 445                                                    ( calc-times . "*" )
 446                                                    ( calc-divide . "/" )
 447                                                    ( calc-power . "^")
 448                                                    ( calc-change-sign . "n")
 449                                                    ( calc-inv . "&") ))))
 450                       (setq calc-keypad-input (concat input (cdr frac))))
 451                      (t
 452                       (beep))))
 453               (isstring
 454                (setq cmd (car cmd))
 455                (if (or (and (equal cmd ".")
 456                             input
 457                             (string-match "[.:e^]" input))
 458                        (and (equal cmd "e")
 459                             input
 460                             (or (and (<= radix 14) (string-match "e" input))
 461                                 (string-match "\\^\\|[-.:]\\'" input)))
 462                        (and (not (equal cmd "."))
 463                             (let ((case-fold-search nil))
 464                               (string-match cmd "0123456789ABCDEF"
 465                                             (if (string-match
 466                                                  "[e^]" (or input ""))
 467                                                 10 radix)))))
 468                    (beep)
 469                  (setq calc-keypad-input (concat
 470                                           (and (/= radix 10)
 471                                                (or (not input)
 472                                                    (equal input "-"))
 473                                                (format "%d#" radix))
 474                                           (and (or (not input)
 475                                                    (equal input "-"))
 476                                                (or (and (equal cmd "e") "1")
 477                                                    (and (equal cmd ".")
 478                                                         (if frac "1" "0"))))
 479                                           input
 480                                           (if (and (equal cmd ".") frac)
 481                                               ":"
 482                                             (if (and (equal cmd "e")
 483                                                      (or (not input)
 484                                                          (string-match
 485                                                           "#" input))
 486                                                      (> radix 14))
 487                                                 (format "*%d.^" radix)
 488                                               cmd))))))
 489               ((and (eq cmd 'calc-change-sign)
 490                     input)
 491                (let* ((epos (or iexpon 0))
 492                       (suffix (substring input epos)))
 493                  (setq calc-keypad-input (concat
 494                                           (substring input 0 epos)
 495                                           (if (string-match "\\`-" suffix)
 496                                               (substring suffix 1)
 497                                             (concat "-" suffix))))))
 498               ((and (eq cmd 'calc-pop)
 499                     input)
 500                (if (equal input "")
 501                    (beep)
 502                  (setq calc-keypad-input (substring input 0
 503                                                     (or (string-match
 504                                                          "\\*[0-9]+\\.\\^\\'"
 505                                                          input)
 506                                                         -1)))))
 507               ((and (eq cmd 'calc-undo)
 508                     input)
 509                (setq calc-keypad-input nil))
 510               (t
 511                (if input
 512                    (let ((val (math-read-number input)))
 513                      (setq calc-keypad-input nil)
 514                      (if val
 515                          (calc-wrapper
 516                           (calc-push-list (list (calc-record
 517                                                  (calc-normalize val)))))
 518                        (or (equal input "")
 519                            (beep))
 520                        (setq cmd nil))
 521                      (if (eq cmd 'calc-enter) (setq cmd nil))))
 522                (setq prefix-arg current-prefix-arg)
 523                (if cmd
 524                    (if (and (consp cmd) (eq (car cmd) 'progn))
 525                        (while (setq cmd (cdr cmd))
 526                          (if (integerp (car cmd))
 527                              (setq prefix-arg (car cmd))
 528                            (command-execute (car cmd))))
 529                      (command-execute cmd)))))
 530       (set-buffer calc-keypad-buffer)
 531       (calc-keypad-show-input))))
 532
 533 (defun calc-keypad-left-click (event)
 534   "Handle a left-button mouse click in Calc Keypad window."
 535   ;; FIXME: Why not use "@e" instead to select the buffer?
 536   (interactive "e")
 537   (with-current-buffer calc-keypad-buffer
 538     (goto-char (posn-point (event-start event)))
 539     (calc-keypad-press)))
 540
 541 (defun calc-keypad-right-click (_event)
 542   "Handle a right-button mouse click in Calc Keypad window."
 543   ;; FIXME: Why not use "@e" instead to select the buffer?
 544   (interactive "e")
 545   (with-current-buffer calc-keypad-buffer
 546     (calc-keypad-menu)))
 547
 548 (defun calc-keypad-middle-click (_event)
 549   "Handle a middle-button mouse click in Calc Keypad window."
 550   ;; FIXME: Why not use "@e" instead to select the buffer?
 551   (interactive "e")
 552   (with-current-buffer calc-keypad-buffer
 553     (calc-keypad-menu-back)))
 554
 555 (defun calc-keypad-menu ()
 556   (interactive)
 557   (unless (eq major-mode 'calc-keypad-mode)
 558     (error "Must be in *Calc Keypad* buffer for this command"))
 559   (while (progn (setq calc-keypad-menu (% (1+ calc-keypad-menu)
 560                                           (length calc-keypad-menus)))
 561                 (not (symbol-value (nth calc-keypad-menu calc-keypad-menus)))))
 562   (calc-keypad-redraw))
 563
 564 (defun calc-keypad-menu-back ()
 565   (interactive)
 566   (or (eq major-mode 'calc-keypad-mode)
 567       (error "Must be in *Calc Keypad* buffer for this command"))
 568   (while (progn (setq calc-keypad-menu (% (1- (+ calc-keypad-menu
 569                                                  (length calc-keypad-menus)))
 570                                           (length calc-keypad-menus)))
 571                 (not (symbol-value (nth calc-keypad-menu calc-keypad-menus)))))
 572   (calc-keypad-redraw))
 573
 574 (defun calc-keypad-store ()
 575   (interactive)
 576   (setq calc-keypad-input "STO"))
 577
 578 (defun calc-keypad-recall ()
 579   (interactive)
 580   (setq calc-keypad-input "RCL"))
 581
 582 (defun calc-pack-interval (mode)
 583   (interactive "p")
 584   (if (or (< mode 0) (> mode 3))
 585       (error "Open/close code should be in the range from 0 to 3"))
 586   (calc-pack (- -6 mode)))
 587
 588 (defun calc-keypad-execute ()
 589   (interactive)
 590   (let* ((prompt "Calc keystrokes: ")
 591          (prefix nil)
 592          keys cmd)
 593     (save-excursion
 594       (calc-select-buffer)
 595       (while (progn
 596                (setq keys (read-key-sequence prompt))
 597                (setq cmd (key-binding keys))
 598                (if (or (memq cmd '(calc-inverse
 599                                    calc-hyperbolic
 600                                    universal-argument
 601                                    digit-argument
 602                                    negative-argument))
 603                        (and prefix (string-match "\\`\e?[-0-9]\\'" keys)))
 604                    (progn
 605                      (setq last-command-event (aref keys (1- (length keys))))
 606                      (command-execute cmd)
 607                      (setq prefix t
 608                            prompt (concat prompt (key-description keys) " ")))
 609                  nil))))  ; skip mouse-up event
 610     (message "")
 611     (if (commandp cmd)
 612         (command-execute cmd)
 613       (error "Not a Calc command: %s" (key-description keys)))))
 614
 615 (provide 'calc-keypd)
 616
 617 ;;; calc-keypd.el ends here