lisp/calc/calc-keypd.el

   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, 2008 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 3 of the License, or
  14 ;; (at your option) 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.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 ;;; Commentary:
  25
  26 ;;; Code:
  27
  28 ;; This file is autoloaded from calc-ext.el.
  29
  30 (require 'calc-ext)
  31 (require 'calc-macs)
  32
  33 (defvar calc-keypad-buffer nil)
  34 (defvar calc-keypad-menu 0)
  35 (defvar calc-keypad-full-layout nil)
  36 (defvar calc-keypad-input nil)
  37 (defvar calc-keypad-prev-input nil)
  38 (defvar calc-keypad-said-hello nil)
  39
  40 ;;; |----+----+----+----+----+----|
  41 ;;; |  ENTER  |+/- |EEX |UNDO| <- |
  42 ;;; |-----+---+-+--+--+-+---++----|
  43 ;;; | INV |  7  |  8  |  9  |  /  |
  44 ;;; |-----+-----+-----+-----+-----|
  45 ;;; | HYP |  4  |  5  |  6  |  *  |
  46 ;;; |-----+-----+-----+-----+-----|
  47 ;;; |EXEC |  1  |  2  |  3  |  -  |
  48 ;;; |-----+-----+-----+-----+-----|
  49 ;;; | OFF |  0  |  .  | PI  |  +  |
  50 ;;; |-----+-----+-----+-----+-----|
  51 (defvar calc-keypad-layout
  52   '( ( ( "ENTER" calc-enter calc-roll-down calc-roll-up calc-over )
  53        ( "ENTER" calc-enter calc-roll-down calc-roll-up calc-over )
  54        ( "+/-"   calc-change-sign calc-inv (progn -4 calc-pack) )
  55        ( "EEX"   ("e") (progn calc-num-prefix calc-pack-interval)
  56                  (progn -5 calc-pack)  )
  57        ( "UNDO"  calc-undo calc-redo calc-last-args )
  58        ( "<-"    calc-pop (progn 0 calc-pop)
  59                  (progn calc-num-prefix calc-pop) ) )
  60      ( ( "INV"   calc-inverse )
  61        ( "7"     ("7") calc-round )
  62        ( "8"     ("8") (progn 2 calc-clean-num) )
  63        ( "9"     ("9") calc-float )
  64        ( "/"     calc-divide (progn calc-inverse calc-power) ) )
  65      ( ( "HYP"   calc-hyperbolic )
  66        ( "4"     ("4") calc-ln calc-log10 )
  67        ( "5"     ("5") calc-exp calc-exp10 )
  68        ( "6"     ("6") calc-abs )
  69        ( "*"     calc-times calc-power ) )
  70      ( ( "EXEC"  calc-keypad-execute )
  71        ( "1"     ("1") calc-arcsin calc-sin )
  72        ( "2"     ("2") calc-arccos calc-cos )
  73        ( "3"     ("3") calc-arctan calc-tan )
  74        ( "-"     calc-minus calc-conj ) )
  75      ( ( "OFF"   calc-keypad-off )
  76        ( "0"     ("0") calc-imaginary )
  77        ( "."     (".") calc-precision )
  78        ( "PI"    calc-pi )
  79        ( "+"     calc-plus calc-sqrt ) ) ))
  80
  81 (defvar calc-keypad-menus '( calc-keypad-math-menu
  82                              calc-keypad-funcs-menu
  83                              calc-keypad-binary-menu
  84                              calc-keypad-vector-menu
  85                              calc-keypad-modes-menu
  86                              calc-keypad-user-menu ) )
  87
  88 ;;; |----+----+----+----+----+----|
  89 ;;; |FLR |CEIL|RND |TRNC|CLN2|FLT |
  90 ;;; |----+----+----+----+----+----|
  91 ;;; | LN |EXP |    |ABS |IDIV|MOD |
  92 ;;; |----+----+----+----+----+----|
  93 ;;; |SIN |COS |TAN |SQRT|y^x |1/x |
  94
  95 (defvar calc-keypad-math-menu
  96   '( ( ( "FLR"   calc-floor )
  97        ( "CEIL"  calc-ceiling )
  98        ( "RND"   calc-round )
  99        ( "TRNC"  calc-trunc )
 100        ( "CLN2"  (progn 2 calc-clean-num) )
 101        ( "FLT"   calc-float ) )
 102      ( ( "LN"    calc-ln )
 103        ( "EXP"   calc-exp )
 104        ( ""      nil )
 105        ( "ABS"   calc-abs )
 106        ( "IDIV"  calc-idiv )
 107        ( "MOD"   calc-mod ) )
 108      ( ( "SIN"   calc-sin )
 109        ( "COS"   calc-cos )
 110        ( "TAN"   calc-tan )
 111        ( "SQRT"  calc-sqrt )
 112        ( "y^x"   calc-power )
 113        ( "1/x"   calc-inv ) ) ))
 114
 115 ;;; |----+----+----+----+----+----|
 116 ;;; |IGAM|BETA|IBET|ERF |BESJ|BESY|
 117 ;;; |----+----+----+----+----+----|
 118 ;;; |IMAG|CONJ| RE |ATN2|RAND|RAGN|
 119 ;;; |----+----+----+----+----+----|
 120 ;;; |GCD |FACT|DFCT|BNOM|PERM|NXTP|
 121
 122 (defvar calc-keypad-funcs-menu
 123   '( ( ( "IGAM"  calc-inc-gamma )
 124        ( "BETA"  calc-beta )
 125        ( "IBET"  calc-inc-beta )
 126        ( "ERF"   calc-erf )
 127        ( "BESJ"  calc-bessel-J )
 128        ( "BESY"  calc-bessel-Y ) )
 129      ( ( "IMAG"  calc-imaginary )
 130        ( "CONJ"  calc-conj )
 131        ( "RE"    calc-re calc-im )
 132        ( "ATN2"  calc-arctan2 )
 133        ( "RAND"  calc-random )
 134        ( "RAGN"  calc-random-again ) )
 135      ( ( "GCD"   calc-gcd calc-lcm )
 136        ( "FACT"  calc-factorial calc-gamma )
 137        ( "DFCT"  calc-double-factorial )
 138        ( "BNOM"  calc-choose )
 139        ( "PERM"  calc-perm )
 140        ( "NXTP"  calc-next-prime calc-prev-prime ) ) ))
 141
 142 ;;; |----+----+----+----+----+----|
 143 ;;; |AND | OR |XOR |NOT |LSH |RSH |
 144 ;;; |----+----+----+----+----+----|
 145 ;;; |DEC |HEX |OCT |BIN |WSIZ|ARSH|
 146 ;;; |----+----+----+----+----+----|
 147 ;;; | A  | B  | C  | D  | E  | F  |
 148
 149 (defvar calc-keypad-binary-menu
 150   '( ( ( "AND"   calc-and calc-diff )
 151        ( "OR"    calc-or )
 152        ( "XOR"   calc-xor )
 153        ( "NOT"   calc-not calc-clip )
 154        ( "LSH"   calc-lshift-binary calc-rotate-binary )
 155        ( "RSH"   calc-rshift-binary ) )
 156      ( ( "DEC"   calc-decimal-radix )
 157        ( "HEX"   calc-hex-radix )
 158        ( "OCT"   calc-octal-radix )
 159        ( "BIN"   calc-binary-radix )
 160        ( "WSIZ"  calc-word-size )
 161        ( "ARSH"  calc-rshift-arith ) )
 162      ( ( "A"     ("A") )
 163        ( "B"     ("B") )
 164        ( "C"     ("C") )
 165        ( "D"     ("D") )
 166        ( "E"     ("E") )
 167        ( "F"     ("F") ) ) ))
 168
 169 ;;; |----+----+----+----+----+----|
 170 ;;; |SUM |PROD|MAX |MAP*|MAP^|MAP$|
 171 ;;; |----+----+----+----+----+----|
 172 ;;; |INV |DET |TRN |IDNT|CRSS|"x" |
 173 ;;; |----+----+----+----+----+----|
 174 ;;; |PACK|UNPK|INDX|BLD |LEN |... |
 175
 176 (defvar calc-keypad-vector-menu
 177   '( ( ( "SUM"   calc-vector-sum calc-vector-alt-sum calc-vector-mean )
 178        ( "PROD"  calc-vector-product nil calc-vector-sdev )
 179        ( "MAX"   calc-vector-max calc-vector-min calc-vector-median )
 180        ( "MAP*"  (lambda () (interactive)
 181                    (calc-map '(2 calcFunc-mul "*"))) )
 182        ( "MAP^"  (lambda () (interactive)
 183                    (calc-map '(2 calcFunc-pow "^"))) )
 184        ( "MAP$"  calc-map-stack ) )
 185      ( ( "MINV"  calc-inv )
 186        ( "MDET"  calc-mdet )
 187        ( "MTRN"  calc-transpose calc-conj-transpose )
 188        ( "IDNT"  (progn calc-num-prefix calc-ident) )
 189        ( "CRSS"  calc-cross )
 190        ( "\"x\"" "\excalc-algebraic-entry\rx\r"
 191                  "\excalc-algebraic-entry\ry\r"
 192                  "\excalc-algebraic-entry\rz\r"
 193                  "\excalc-algebraic-entry\rt\r") )
 194      ( ( "PACK"  calc-pack )
 195        ( "UNPK"  calc-unpack )
 196        ( "INDX"  (progn calc-num-prefix calc-index) "\C-u\excalc-index\r" )
 197        ( "BLD"   (progn calc-num-prefix calc-build-vector) )
 198        ( "LEN"   calc-vlength )
 199        ( "..."   calc-full-vectors ) ) ))
 200
 201 ;;; |----+----+----+----+----+----|
 202 ;;; |FLT |FIX |SCI |ENG |GRP |    |
 203 ;;; |----+----+----+----+----+----|
 204 ;;; |RAD |DEG |FRAC|POLR|SYMB|PREC|
 205 ;;; |----+----+----+----+----+----|
 206 ;;; |SWAP|RLL3|RLL4|OVER|STO |RCL |
 207
 208 (defvar calc-keypad-modes-menu
 209   '( ( ( "FLT"   calc-normal-notation
 210                  (progn calc-num-prefix calc-normal-notation) )
 211        ( "FIX"   (progn 2 calc-fix-notation)
 212                  (progn calc-num-prefix calc-fix-notation) )
 213        ( "SCI"   calc-sci-notation
 214                  (progn calc-num-prefix calc-sci-notation) )
 215        ( "ENG"   calc-eng-notation
 216                  (progn calc-num-prefix calc-eng-notation) )
 217        ( "GRP"   calc-group-digits "\C-u-3\excalc-group-digits\r" )
 218        ( ""      nil ) )
 219      ( ( "RAD"   calc-radians-mode )
 220        ( "DEG"   calc-degrees-mode )
 221        ( "FRAC"  calc-frac-mode )
 222        ( "POLR"  calc-polar-mode )
 223        ( "SYMB"  calc-symbolic-mode )
 224        ( "PREC"  calc-precision ) )
 225      ( ( "SWAP"  calc-roll-down )
 226        ( "RLL3"  (progn 3 calc-roll-up) (progn 3 calc-roll-down) )
 227        ( "RLL4"  (progn 4 calc-roll-up) (progn 4 calc-roll-down) )
 228        ( "OVER"  calc-over )
 229        ( "STO"   calc-keypad-store )
 230        ( "RCL"   calc-keypad-recall ) ) ))
 231
 232 (define-derived-mode calc-keypad-mode fundamental-mode "Calculator"
 233   "Major mode for Calc keypad input."
 234   (define-key calc-keypad-mode-map " " 'calc-keypad-press)
 235   (define-key calc-keypad-mode-map (kbd "RET") 'calc-keypad-press)
 236   (define-key calc-keypad-mode-map (kbd "TAB") 'calc-keypad-menu)
 237   (define-key calc-keypad-mode-map "q" 'calc-keypad-off)
 238   (define-key calc-keypad-mode-map [down-mouse-1] 'ignore)
 239   (define-key calc-keypad-mode-map [drag-mouse-1] 'ignore)
 240   (define-key calc-keypad-mode-map [double-mouse-1] 'ignore)
 241   (define-key calc-keypad-mode-map [triple-mouse-1] 'ignore)
 242   (define-key calc-keypad-mode-map [down-mouse-2] 'ignore)
 243   (define-key calc-keypad-mode-map [drag-mouse-2] 'ignore)
 244   (define-key calc-keypad-mode-map [double-mouse-2] 'ignore)
 245   (define-key calc-keypad-mode-map [triple-mouse-2] 'ignore)
 246   (define-key calc-keypad-mode-map [down-mouse-3] 'ignore)
 247   (define-key calc-keypad-mode-map [drag-mouse-3] 'ignore)
 248   (define-key calc-keypad-mode-map [double-mouse-3] 'ignore)
 249   (define-key calc-keypad-mode-map [triple-mouse-3] 'ignore)
 250   (define-key calc-keypad-mode-map [mouse-3] 'calc-keypad-right-click)
 251   (define-key calc-keypad-mode-map [mouse-2] 'calc-keypad-middle-click)
 252   (define-key calc-keypad-mode-map [mouse-1] 'calc-keypad-left-click)
 253   (put 'calc-keypad-mode 'mode-class 'special)
 254   (make-local-variable 'calc-main-buffer))
 255
 256 (defun calc-do-keypad (&optional full-display interactive)
 257   (calc-create-buffer)
 258   (let ((calcbuf (current-buffer)))
 259     (unless (bufferp calc-keypad-buffer)
 260       (set-buffer (setq calc-keypad-buffer (get-buffer-create "*Calc Keypad*")))
 261       (calc-keypad-mode)
 262       (setq calc-main-buffer calcbuf)
 263       (calc-keypad-redraw)
 264       (calc-trail-buffer))
 265     (let ((width 29)
 266           (height 17)
 267           win old-win)
 268       (if (setq win (get-buffer-window "*Calculator*"))
 269           (delete-window win))
 270       (if (setq win (get-buffer-window "*Calc Trail*"))
 271           (if (one-window-p)
 272               (switch-to-buffer (other-buffer))
 273             (delete-window win)))
 274       (if (setq win (get-buffer-window calc-keypad-buffer))
 275           (progn
 276             (bury-buffer "*Calculator*")
 277             (bury-buffer "*Calc Trail*")
 278             (bury-buffer calc-keypad-buffer)
 279             (if (one-window-p)
 280                 (switch-to-buffer (other-buffer))
 281               (delete-window win)))
 282         (setq calc-was-keypad-mode t
 283               old-win (get-largest-window))
 284         (if (or (< (window-height old-win) (+ height 6))
 285                 (< (window-width old-win) (+ width 15))
 286                 full-display)
 287             (delete-other-windows old-win))
 288         (if (< (window-height old-win) (+ height 4))
 289             (error "Screen is not tall enough for this mode"))
 290         (if full-display
 291             (progn
 292               (setq win (split-window old-win (- (window-height old-win)
 293                                                  height 1)))
 294               (set-window-buffer old-win (calc-trail-buffer))
 295               (set-window-buffer win calc-keypad-buffer)
 296               (set-window-start win 1)
 297               (setq win (split-window win (+ width 7) t))
 298               (set-window-buffer win calcbuf))
 299           (if (or t  ; left-side keypad not yet fully implemented
 300                   (< (save-excursion
 301                        (set-buffer (window-buffer old-win))
 302                        (current-column))
 303                      (/ (window-width) 2)))
 304               (setq win (split-window old-win (- (window-width old-win)
 305                                                  width 2)
 306                                       t))
 307             (setq old-win (split-window old-win (+ width 2) t)))
 308           (set-window-buffer win calc-keypad-buffer)
 309           (set-window-start win 1)
 310           (split-window win (- (window-height win) height 1))
 311           (set-window-buffer win calcbuf))
 312         (select-window old-win)
 313         (message "Welcome to GNU Emacs Calc!  Use the left and right mouse buttons")
 314         (run-hooks 'calc-keypad-start-hook)
 315         (and calc-keypad-said-hello interactive
 316              (progn
 317                (sit-for 2)
 318                (message "")))
 319         (setq calc-keypad-said-hello t)))
 320     (setq calc-keypad-input nil)))
 321
 322 (defun calc-keypad-off ()
 323   (interactive)
 324   (if calc-standalone-flag
 325       (save-buffers-kill-emacs nil)
 326     (calc-keypad)))
 327
 328 (defun calc-keypad-redraw ()
 329   (set-buffer calc-keypad-buffer)
 330   (setq buffer-read-only t)
 331   (setq calc-keypad-full-layout (append (symbol-value (nth calc-keypad-menu
 332                                                            calc-keypad-menus))
 333                                         calc-keypad-layout))
 334   (let ((buffer-read-only nil)
 335         (row calc-keypad-full-layout)
 336         (y 0))
 337     (erase-buffer)
 338     (insert "\n")
 339     (while row
 340       (let ((col (car row)))
 341         (while col
 342           (let* ((key (car col))
 343                  (cwid (if (>= y 4)
 344                            5
 345                          (if (and (= y 3) (eq col (car row)))
 346                              (progn (setq col (cdr col)) 9)
 347                            4)))
 348                  (name (if (and calc-standalone-flag
 349                                 (eq (nth 1 key) 'calc-keypad-off))
 350                            "EXIT"
 351                          (if (> (length (car key)) cwid)
 352                              (substring (car key) 0 cwid)
 353                            (car key))))
 354                  (wid (length name))
 355                  (pad (- cwid (/ wid 2))))
 356             (insert (make-string (/ (- cwid wid) 2) 32)
 357                     name
 358                     (make-string (/ (- cwid wid -1) 2) 32)
 359                     (if (equal name "MENU")
 360                         (int-to-string (1+ calc-keypad-menu))
 361                       "|")))
 362           (or (setq col (cdr col))
 363               (insert "\n")))
 364         (insert (if (>= y 4)
 365                     "-----+-----+-----+-----+-----"
 366                   (if (= y 3)
 367                       "-----+---+-+--+--+-+---++----"
 368                     "----+----+----+----+----+----"))
 369                 (if (= y 7) "+\n" "|\n"))
 370         (setq y (1+ y)
 371               row (cdr row)))))
 372   (setq calc-keypad-prev-input t)
 373   (calc-keypad-show-input)
 374   (goto-char (point-min)))
 375
 376 (defun calc-keypad-show-input ()
 377   (or (equal calc-keypad-input calc-keypad-prev-input)
 378       (let ((buffer-read-only nil))
 379         (save-excursion
 380           (goto-char (point-min))
 381           (forward-line 1)
 382           (delete-region (point-min) (point))
 383           (if calc-keypad-input
 384               (insert "Calc: " calc-keypad-input "\n")
 385             (insert "----+-----Calc " calc-version " -----+----"
 386                     (int-to-string (1+ calc-keypad-menu))
 387                     "\n")))))
 388   (setq calc-keypad-prev-input calc-keypad-input))
 389
 390 (defun calc-keypad-press ()
 391   (interactive)
 392   (unless (eq major-mode 'calc-keypad-mode)
 393     (error "Must be in *Calc Keypad* buffer for this command"))
 394   (let* ((row (save-excursion
 395                 (beginning-of-line)
 396                 (count-lines (point-min) (point))))
 397          (y (/ row 2))
 398          (x (/ (current-column) (if (>= y 4) 6 5)))
 399          radix frac inv
 400          (hyp (with-current-buffer calc-main-buffer
 401                 (setq radix calc-number-radix
 402                       frac calc-prefer-frac
 403                       inv calc-inverse-flag)
 404                 calc-hyperbolic-flag))
 405          (invhyp t)
 406          (menu (symbol-value (nth calc-keypad-menu calc-keypad-menus)))
 407          (input calc-keypad-input)
 408          (iexpon (and input
 409                       (or (string-match "\\*[0-9]+\\.\\^" input)
 410                           (and (<= radix 14) (string-match "e" input)))
 411                       (match-end 0)))
 412          (key (nth x (nth y calc-keypad-full-layout)))
 413          (cmd (or (nth (if inv (if hyp 4 2) (if hyp 3 99)) key)
 414                   (setq invhyp nil)
 415                   (nth 1 key)))
 416          (isstring (and (consp cmd) (stringp (car cmd))))
 417          (calc-is-keypad-press t))
 418     (if invhyp (calc-wrapper))  ; clear Inv and Hyp flags
 419     (unwind-protect
 420         (cond ((or (null cmd)
 421                    (= (% row 2) 0))
 422                (beep))
 423               ((and (> (minibuffer-depth) 0))
 424                (cond (isstring
 425                       (push (aref (car cmd) 0) unread-command-events))
 426                      ((eq cmd 'calc-pop)
 427                       (push ?\177 unread-command-events))
 428                      ((eq cmd 'calc-enter)
 429                       (push 13 unread-command-events))
 430                      ((eq cmd 'calc-undo)
 431                       (push 7 unread-command-events))
 432                      (t
 433                       (beep))))
 434               ((and input (string-match "STO\\|RCL" input))
 435                (cond ((and isstring (string-match "[0-9]" (car cmd)))
 436                       (setq calc-keypad-input nil)
 437                       (let ((var (intern (concat "var-q" (car cmd)))))
 438                         (cond ((equal input "STO+") (calc-store-plus var))
 439                               ((equal input "STO-") (calc-store-minus var))
 440                               ((equal input "STO*") (calc-store-times var))
 441                               ((equal input "STO/") (calc-store-div var))
 442                               ((equal input "STO^") (calc-store-power var))
 443                               ((equal input "STOn") (calc-store-neg 1 var))
 444                               ((equal input "STO&") (calc-store-inv 1 var))
 445                               ((equal input "STO") (calc-store-into var))
 446                               (t (calc-recall var)))))
 447                      ((memq cmd '(calc-pop calc-undo))
 448                       (setq calc-keypad-input nil))
 449                      ((and (equal input "STO")
 450                            (setq frac (assq cmd '( ( calc-plus . "+" )
 451                                                    ( calc-minus . "-" )
 452                                                    ( calc-times . "*" )
 453                                                    ( calc-divide . "/" )
 454                                                    ( calc-power . "^")
 455                                                    ( calc-change-sign . "n")
 456                                                    ( calc-inv . "&") ))))
 457                       (setq calc-keypad-input (concat input (cdr frac))))
 458                      (t
 459                       (beep))))
 460               (isstring
 461                (setq cmd (car cmd))
 462                (if (or (and (equal cmd ".")
 463                             input
 464                             (string-match "[.:e^]" input))
 465                        (and (equal cmd "e")
 466                             input
 467                             (or (and (<= radix 14) (string-match "e" input))
 468                                 (string-match "\\^\\|[-.:]\\'" input)))
 469                        (and (not (equal cmd "."))
 470                             (let ((case-fold-search nil))
 471                               (string-match cmd "0123456789ABCDEF"
 472                                             (if (string-match
 473                                                  "[e^]" (or input ""))
 474                                                 10 radix)))))
 475                    (beep)
 476                  (setq calc-keypad-input (concat
 477                                           (and (/= radix 10)
 478                                                (or (not input)
 479                                                    (equal input "-"))
 480                                                (format "%d#" radix))
 481                                           (and (or (not input)
 482                                                    (equal input "-"))
 483                                                (or (and (equal cmd "e") "1")
 484                                                    (and (equal cmd ".")
 485                                                         (if frac "1" "0"))))
 486                                           input
 487                                           (if (and (equal cmd ".") frac)
 488                                               ":"
 489                                             (if (and (equal cmd "e")
 490                                                      (or (not input)
 491                                                          (string-match
 492                                                           "#" input))
 493                                                      (> radix 14))
 494                                                 (format "*%d.^" radix)
 495                                               cmd))))))
 496               ((and (eq cmd 'calc-change-sign)
 497                     input)
 498                (let* ((epos (or iexpon 0))
 499                       (suffix (substring input epos)))
 500                  (setq calc-keypad-input (concat
 501                                           (substring input 0 epos)
 502                                           (if (string-match "\\`-" suffix)
 503                                               (substring suffix 1)
 504                                             (concat "-" suffix))))))
 505               ((and (eq cmd 'calc-pop)
 506                     input)
 507                (if (equal input "")
 508                    (beep)
 509                  (setq calc-keypad-input (substring input 0
 510                                                     (or (string-match
 511                                                          "\\*[0-9]+\\.\\^\\'"
 512                                                          input)
 513                                                         -1)))))
 514               ((and (eq cmd 'calc-undo)
 515                     input)
 516                (setq calc-keypad-input nil))
 517               (t
 518                (if input
 519                    (let ((val (math-read-number input)))
 520                      (setq calc-keypad-input nil)
 521                      (if val
 522                          (calc-wrapper
 523                           (calc-push-list (list (calc-record
 524                                                  (calc-normalize val)))))
 525                        (or (equal input "")
 526                            (beep))
 527                        (setq cmd nil))
 528                      (if (eq cmd 'calc-enter) (setq cmd nil))))
 529                (setq prefix-arg current-prefix-arg)
 530                (if cmd
 531                    (if (and (consp cmd) (eq (car cmd) 'progn))
 532                        (while (setq cmd (cdr cmd))
 533                          (if (integerp (car cmd))
 534                              (setq prefix-arg (car cmd))
 535                            (command-execute (car cmd))))
 536                      (command-execute cmd)))))
 537       (set-buffer calc-keypad-buffer)
 538       (calc-keypad-show-input))))
 539
 540 (defun calc-keypad-left-click (event)
 541   "Handle a left-button mouse click in Calc Keypad window."
 542   (interactive "e")
 543   (with-current-buffer calc-keypad-buffer
 544     (goto-char (posn-point (event-start event)))
 545     (calc-keypad-press)))
 546
 547 (defun calc-keypad-right-click (event)
 548   "Handle a right-button mouse click in Calc Keypad window."
 549   (interactive "e")
 550   (save-excursion
 551     (set-buffer calc-keypad-buffer)
 552     (calc-keypad-menu)))
 553
 554 (defun calc-keypad-middle-click (event)
 555   "Handle a middle-button mouse click in Calc Keypad window."
 556   (interactive "e")
 557   (with-current-buffer calc-keypad-buffer
 558     (calc-keypad-menu-back)))
 559
 560 (defun calc-keypad-menu ()
 561   (interactive)
 562   (unless (eq major-mode 'calc-keypad-mode)
 563     (error "Must be in *Calc Keypad* buffer for this command"))
 564   (while (progn (setq calc-keypad-menu (% (1+ calc-keypad-menu)
 565                                           (length calc-keypad-menus)))
 566                 (not (symbol-value (nth calc-keypad-menu calc-keypad-menus)))))
 567   (calc-keypad-redraw))
 568
 569 (defun calc-keypad-menu-back ()
 570   (interactive)
 571   (or (eq major-mode 'calc-keypad-mode)
 572       (error "Must be in *Calc Keypad* buffer for this command"))
 573   (while (progn (setq calc-keypad-menu (% (1- (+ calc-keypad-menu
 574                                                  (length calc-keypad-menus)))
 575                                           (length calc-keypad-menus)))
 576                 (not (symbol-value (nth calc-keypad-menu calc-keypad-menus)))))
 577   (calc-keypad-redraw))
 578
 579 (defun calc-keypad-store ()
 580   (interactive)
 581   (setq calc-keypad-input "STO"))
 582
 583 (defun calc-keypad-recall ()
 584   (interactive)
 585   (setq calc-keypad-input "RCL"))
 586
 587 (defun calc-pack-interval (mode)
 588   (interactive "p")
 589   (if (or (< mode 0) (> mode 3))
 590       (error "Open/close code should be in the range from 0 to 3"))
 591   (calc-pack (- -6 mode)))
 592
 593 (defun calc-keypad-execute ()
 594   (interactive)
 595   (let* ((prompt "Calc keystrokes: ")
 596          (flush 'x-flush-mouse-queue)
 597          (prefix nil)
 598          keys cmd)
 599     (save-excursion
 600       (calc-select-buffer)
 601       (while (progn
 602                (setq keys (read-key-sequence prompt))
 603                (setq cmd (key-binding keys))
 604                (if (or (memq cmd '(calc-inverse
 605                                    calc-hyperbolic
 606                                    universal-argument
 607                                    digit-argument
 608                                    negative-argument))
 609                        (and prefix (string-match "\\`\e?[-0-9]\\'" keys)))
 610                    (progn
 611                      (setq last-command-char (aref keys (1- (length keys))))
 612                      (command-execute cmd)
 613                      (setq flush 'not-any-more
 614                            prefix t
 615                            prompt (concat prompt (key-description keys) " ")))
 616                  (eq cmd flush)))))  ; skip mouse-up event
 617     (message "")
 618     (if (commandp cmd)
 619         (command-execute cmd)
 620       (error "Not a Calc command: %s" (key-description keys)))))
 621
 622 (provide 'calc-keypd)
 623
 624 ;; arch-tag: 4ba0d360-2bb6-40b8-adfa-eb373765b3f9
 625 ;;; calc-keypd.el ends here