lisp/thumbs.el

   1 ;;; thumbs.el --- Thumbnails previewer for images files
   2 ;;;
   3 ;; Author: Jean-Philippe Theberge <jphiltheberge@videotron.ca>
   4 ;;
   5 ;; Thanks: Alex Schroeder <alex@gnu.org> for maintaining the package at some time
   6 ;;         The peoples at #emacs@freenode.net for numerous help
   7 ;;         RMS for emacs and the GNU project.
   8 ;;
   9 ;; Keywords: Multimedia
  10
  11 (defconst thumbs-version "2.0")
  12
  13 ;; This file is part of GNU Emacs.
  14
  15 ;; GNU Emacs is free software; you can redistribute it and/or modify
  16 ;; it under the terms of the GNU General Public License as published by
  17 ;; the Free Software Foundation; either version 2, or (at your option)
  18 ;; any later version.
  19
  20 ;; GNU Emacs is distributed in the hope that it will be useful,
  21 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  22 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23 ;; GNU General Public License for more details.
  24
  25 ;; You should have received a copy of the GNU General Public License
  26 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  27 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  28 ;; Boston, MA 02111-1307, USA.
  29
  30 ;;; Commentary:
  31
  32 ;; This package create two new mode: thumbs-mode and
  33 ;; thumbs-view-image-mode. It is used for images browsing and viewing
  34 ;; from within emacs. Minimal image manipulation functions are also
  35 ;; available via external programs.
  36 ;;
  37 ;; The 'convert' program from 'ImageMagick'
  38 ;; [URL:http://www.imagemagick.org/] is required.
  39 ;;
  40 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
  41 ;; CHANGELOG
  42 ;;
  43 ;; This is version 2.0
  44 ;;
  45 ;; USAGE
  46 ;;
  47 ;; Type M-x thumbs RET DIR RET to view the directory DIR in Thumbs mode.
  48 ;; That should be a directory containing image files.
  49 ;; from dired, C-t m enter in thumbs-mode with all marked files
  50 ;;             C-t a enter in thumbs-mode with all files in current-directory
  51 ;; In thumbs-mode, pressing <return> on a image will bring you in image view mode
  52 ;; for that image.  C-h m will give you a list of available keybinding.
  53
  54 ;;; History:
  55 ;;
  56
  57 ;;; Code:
  58
  59 (require 'dired)
  60
  61 ;; Abort if in-line imaging isn't supported (i.e. Emacs-20.7)
  62
  63 (when (not (display-images-p))
  64   (error "Your Emacs version (%S) doesn't support in-line images,
  65 was not compiled with image support or is run in console mode.
  66 Upgrade to Emacs 21.1 or newer, compile it with image support
  67 or use a window-system"
  68          emacs-version))
  69
  70 ;; CUSTOMIZATIONS
  71
  72 (defgroup thumbs nil
  73   "Thumbnails previewer."
  74   :group 'multimedia)
  75
  76 (defcustom thumbs-thumbsdir
  77   (expand-file-name "~/.emacs-thumbs")
  78   "*Directory to store thumbnails."
  79   :type 'directory
  80   :group 'thumbs)
  81
  82 (defcustom thumbs-geometry "100x100"
  83   "*Size of thumbnails."
  84   :type 'string
  85   :group 'thumbs)
  86
  87 (defcustom thumbs-per-line 5
  88   "*Number of thumbnails per line to show in directory."
  89   :type 'string
  90   :group 'thumbs)
  91
  92 (defcustom thumbs-thumbsdir-max-size 50000000
  93   "Max size for thumbnails directory.
  94 When it reach that size (in bytes), a warning is send."
  95   :type 'string
  96   :group 'thumbs)
  97
  98 (defcustom thumbs-conversion-program
  99   (if (equal 'windows-nt system-type)
 100       "convert.exe"
 101     (or (executable-find "convert")
 102         "/usr/X11R6/bin/convert"))
 103   "*Name of conversion program for thumbnails generation.
 104 It must be 'convert'."
 105   :type 'string
 106   :group 'thumbs)
 107
 108 (defcustom thumbs-setroot-command
 109   "xloadimage -onroot -fullscreen *"
 110   "Command to set the root window."
 111   :type 'string
 112   :group 'thumbs)
 113
 114 (defcustom thumbs-relief 5
 115   "*Size of button-like border around thumbnails."
 116   :type 'string
 117   :group 'thumbs)
 118
 119 (defcustom thumbs-margin 2
 120   "*Size of the margin around thumbnails.
 121 This is where you see the cursor."
 122   :type 'string
 123   :group 'thumbs)
 124
 125 (defcustom thumbs-thumbsdir-auto-clean t
 126   "If set, delete older file in the thumbnails directory.
 127 Deletion is done at load time when the directory size is bigger
 128 than 'thumbs-thumbsdir-max-size'."
 129   :type 'boolean
 130   :group 'thumbs)
 131
 132 (defcustom thumbs-image-resizing-step 10
 133   "Step by wich to resize image."
 134   :type 'string
 135   :group 'thumbs)
 136
 137 (defcustom thumbs-temp-dir
 138   "/tmp/"
 139   "Temporary directory to use.
 140 Leaving it to default '/tmp/' can let another user
 141 see some of your images."
 142   :type 'directory
 143   :group 'thumbs)
 144
 145 (defcustom thumbs-temp-prefix "emacsthumbs"
 146   "Prefix to add to temp files."
 147   :type 'string
 148   :group 'thumbs)
 149
 150 ;; Initialize some variable, for later use.
 151 (defvar thumbs-temp-file
 152   (concat thumbs-temp-dir thumbs-temp-prefix)
 153   "Temporary filesname for images.")
 154
 155 (defvar thumbs-current-tmp-filename
 156   nil
 157   "Temporary filename of current image.")
 158 (defvar thumbs-current-image-filename
 159   nil
 160   "Filename of current image.")
 161 (defvar thumbs-current-image-size
 162   nil
 163   "Size of current image.")
 164 (defvar thumbs-image-num
 165   nil
 166   "Number of current image.")
 167 (defvar thumbs-current-dir
 168   nil
 169   "Current directory.")
 170 (defvar thumbs-markedL
 171   nil
 172   "List of marked files.")
 173
 174 ;; Make sure auto-image-file-mode is ON.
 175 (auto-image-file-mode t)
 176
 177 ;; Create the thumbs directory if it does not exists.
 178 (setq thumbs-thumbsdir (expand-file-name thumbs-thumbsdir))
 179
 180 (when (not (file-directory-p thumbs-thumbsdir))
 181   (progn
 182     (make-directory thumbs-thumbsdir)
 183     (message "Creating thumbnails directory")))
 184
 185 (when (not (fboundp 'ignore-errors))
 186   (defmacro ignore-errors (&rest body)
 187     "Execute FORMS; if anz error occurs, return nil.
 188 Otherwise, return result of last FORM."
 189     (let ((err (thumbs-gensym)))
 190       (list 'condition-case err (cons 'progn body) '(error nil)))))
 191
 192 (when (not (fboundp 'caddar))
 193   (defun caddar (x)
 194     "Return the `car' of the `cdr' of the `cdr' of the `car' of X."
 195     (car (cdr (cdr (car x))))))
 196
 197 (defvar thumbs-gensym-counter 0)
 198
 199 (defun thumbs-gensym (&optional arg)
 200   "Generate a new uninterned symbol.
 201 The name is made by appending a number to PREFIX, default \"Thumbs\"."
 202   (let ((prefix (if (stringp arg) arg "Thumbs"))
 203         (num (if (integerp arg) arg
 204                (prog1
 205                    thumbs-gensym-counter
 206                  (setq thumbs-gensym-counter (1+ thumbs-gensym-counter))))))
 207     (make-symbol (format "%s%d" prefix num))))
 208
 209 (defun thumbs-cleanup-thumbsdir ()
 210   "Clean the thumbnails directory.
 211 If the total size of all files in 'thumbs-thumbsdir' is bigger than
 212 'thumbs-thumbsdir-max-size', files are deleted until the max size is
 213 reached."
 214   (let* ((filesL
 215           (sort
 216            (mapcar
 217             (lambda (f)
 218               (let ((fattribsL (file-attributes f)))
 219                 `(,(nth 4 fattribsL) ,(nth 7 fattribsL) ,f)))
 220             (directory-files thumbs-thumbsdir t (image-file-name-regexp)))
 221            '(lambda (l1 l2) (time-less-p (car l1)(car l2)))))
 222          (dirsize (apply '+ (mapcar (lambda (x) (cadr x)) filesL))))
 223     (while (> dirsize thumbs-thumbsdir-max-size)
 224       (progn
 225         (message "Deleting file %s" (caddar filesL)))
 226       (delete-file (caddar filesL))
 227       (setq dirsize (- dirsize (cadar filesL)))
 228       (setq filesL (cdr filesL)))))
 229
 230 ;; Check the thumbsnail directory size and clean it if necessary.
 231 (when thumbs-thumbsdir-auto-clean
 232   (thumbs-cleanup-thumbsdir))
 233
 234 (defun thumbs-call-convert (filein fileout action
 235                                    &optional arg output-format action-prefix)
 236   "Call the convert program.
 237 FILEIN is the input file,
 238 FILEOUT is the output file,
 239 ACTION is the command to send to convert.
 240 Optional argument are:
 241 ARG any arguments to the ACTION command,
 242 OUTPUT-FORMAT is the file format to output, default is jpeg
 243 ACTION-PREFIX is the symbol to place before the ACTION command
 244               (default to '-' but can sometime be '+')."
 245   (let ((command (format "%s %s%s %s \"%s\" \"%s:%s\""
 246                          thumbs-conversion-program
 247                          (or action-prefix "-")
 248                          action
 249                          (or arg "")
 250                          filein
 251                          (or output-format "jpeg")
 252                          fileout)))
 253     (shell-command command)))
 254
 255 (defun thumbs-increment-image-size-element (n d)
 256   "Increment number N by D percent."
 257   (round (+ n (/ (* d n) 100))))
 258
 259 (defun thumbs-decrement-image-size-element (n d)
 260   "Decrement number N by D percent."
 261   (round (- n (/ (* d n) 100))))
 262
 263 (defun thumbs-increment-image-size (s)
 264   "Increment S (a cons of width x heigh)."
 265   (cons
 266    (thumbs-increment-image-size-element (car s)
 267                                         thumbs-image-resizing-step)
 268    (thumbs-increment-image-size-element (cdr s)
 269                                         thumbs-image-resizing-step)))
 270
 271 (defun thumbs-decrement-image-size (s)
 272   "Decrement S (a cons of width x heigh)."
 273   (cons
 274    (thumbs-decrement-image-size-element (car s)
 275                                         thumbs-image-resizing-step)
 276    (thumbs-decrement-image-size-element (cdr s)
 277                                         thumbs-image-resizing-step)))
 278
 279 (defun thumbs-resize-image (&optional increment size)
 280   "Resize image in current buffer.
 281 if INCREMENT is set, make the image bigger, else smaller.
 282 Or, alternatively, a SIZE may be specified."
 283   (interactive)
 284   ;; cleaning of old temp file
 285   (ignore-errors
 286     (apply 'delete-file
 287            (directory-files
 288             thumbs-temp-dir t
 289             thumbs-temp-prefix)))
 290   (let ((buffer-read-only nil)
 291         (x (if size
 292                size
 293              (if increment
 294                  (thumbs-increment-image-size
 295                   thumbs-current-image-size)
 296                (thumbs-decrement-image-size
 297                 thumbs-current-image-size))))
 298         (tmp (format "%s%s.jpg" thumbs-temp-file (thumbs-gensym))))
 299     (erase-buffer)
 300     (thumbs-call-convert thumbs-current-image-filename
 301                          tmp "sample"
 302                          (concat (number-to-string (car x)) "x"
 303                                  (number-to-string (cdr x))))
 304     (thumbs-insert-image tmp 'jpeg 0)
 305     (setq thumbs-current-tmp-filename tmp)))
 306
 307 (defun thumbs-resize-interactive (width height)
 308   "Resize Image interactively to specified WIDTH and HEIGHT."
 309   (interactive "nWidth: \nnHeight: ")
 310   (thumbs-resize-image nil (cons width height)))
 311
 312 (defun thumbs-resize-image-size-down ()
 313   "Resize image (smaller)."
 314   (interactive)
 315   (thumbs-resize-image nil))
 316
 317 (defun thumbs-resize-image-size-up ()
 318   "Resize image (bigger)."
 319   (interactive)
 320   (thumbs-resize-image t))
 321
 322 (defun thumbs-subst-char-in-string (orig rep string)
 323   "Replace occurrences of character ORIG with character REP in STRING.
 324 Return the resulting (new) string.  -- (defun borowed to Dave Love)"
 325   (let ((string (copy-sequence string))
 326         (l (length string))
 327         (i 0))
 328     (while (< i l)
 329       (if (= (aref string i) orig)
 330           (aset string i rep))
 331       (setq i (1+ i)))
 332     string))
 333
 334 (defun thumbs-thumbname (img)
 335   "Return a thumbnail name for the image IMG."
 336   (concat thumbs-thumbsdir "/"
 337           (thumbs-subst-char-in-string
 338            ?\  ?\_
 339            (apply
 340             'concat
 341             (split-string
 342              (expand-file-name img) "/")))))
 343
 344 (defun thumbs-make-thumb (img)
 345   "Create the thumbnail for IMG."
 346   (let* ((fn (expand-file-name img))
 347          (tn (thumbs-thumbname img)))
 348     (if (or (not (file-exists-p tn))
 349             (not (equal (thumbs-file-size tn) thumbs-geometry)))
 350         (thumbs-call-convert fn tn "sample" thumbs-geometry))
 351     tn))
 352
 353 (defun thumbs-image-type (img)
 354   "Return image type from filename IMG."
 355   (cond ((string-match ".*\\.jpe?g\\'" img) 'jpeg)
 356         ((string-match ".*\\.xpm\\'" img) 'xpm)
 357         ((string-match ".*\\.xbm\\'" img) 'xbm)
 358         ((string-match ".*\\.gif\\'" img) 'gif)
 359         ((string-match ".*\\.bmp\\'" img) 'bmp)
 360         ((string-match ".*\\.png\\'" img) 'png)
 361         ((string-match ".*\\.tiff?\\'" img) 'tiff)))
 362
 363 (defun thumbs-file-size (img)
 364   (let ((i (image-size (find-image `((:type ,(thumbs-image-type img) :file ,img))) t)))
 365     (concat (number-to-string (round (car i)))
 366             "x"
 367             (number-to-string (round (cdr i))))))
 368
 369 ;;;###autoload
 370 (defun thumbs-find-thumb (img)
 371   "Display the thumbnail for IMG."
 372   (interactive "f")
 373   (find-file (thumbs-make-thumb img)))
 374
 375 (defun thumbs-insert-image (img type relief &optional marked)
 376   "Insert image IMG at point.
 377 TYPE and RELIEF will be used in constructing the image; see `image'
 378 in the emacs-lisp manual for further documentation.
 379 if MARKED is non-nil, the image is marked."
 380   (let ((i `(image :type ,type
 381                    :file ,img
 382                    :relief ,relief
 383                    :conversion ,(if marked 'disabled)
 384                    :margin ,thumbs-margin)))
 385     (insert-image i)
 386     (setq thumbs-current-image-size
 387           (image-size i t))))
 388
 389 (defun thumbs-insert-thumb (img &optional marked)
 390   "Insert the thumbnail for IMG at point.
 391 if MARKED is non-nil, the image is marked"
 392   (thumbs-insert-image
 393    (thumbs-make-thumb img) 'jpeg thumbs-relief marked))
 394
 395 (defun thumbs-do-thumbs-insertion (L)
 396   "Insert all thumbs in list L."
 397   (setq thumbs-fileL nil)
 398   (let ((i 0))
 399     (while L
 400       (when (= 0 (mod (setq i (1+ i)) thumbs-per-line))
 401         (newline))
 402       (setq thumbs-fileL (cons (cons (point)
 403                                      (car L))
 404                                thumbs-fileL))
 405       (thumbs-insert-thumb (car L)
 406                            (member (car L) thumbs-markedL))
 407       (setq L (cdr L)))))
 408
 409 (defun thumbs-show-thumbs-list (L &optional buffer-name same-window)
 410   (funcall (if same-window 'switch-to-buffer 'pop-to-buffer)
 411            (or buffer-name "*THUMB-View*"))
 412   (let ((inhibit-read-only t))
 413     (erase-buffer)
 414     (thumbs-mode)
 415     (make-variable-buffer-local 'thumbs-fileL)
 416     (setq thumbs-fileL nil)
 417     (thumbs-do-thumbs-insertion L)
 418     (goto-char (point-min))
 419     (setq thumbs-current-dir default-directory)
 420     (make-variable-buffer-local 'thumbs-current-dir)))
 421
 422 ;;;###autoload
 423 (defun thumbs-show-all-from-dir (dir &optional reg same-window)
 424   "Make a preview buffer for all images in DIR.
 425 Optional argument REG to select file matching a regexp,
 426 and SAME-WINDOW to show thumbs in the same window."
 427   (interactive "DDir: ")
 428   (thumbs-show-thumbs-list
 429    (directory-files dir t
 430                     (or reg (image-file-name-regexp)))
 431    (concat "*Thumbs: " dir) same-window))
 432
 433 ;;;###autoload
 434 (defun thumbs-dired-show-marked ()
 435   "In Dired, make a thumbs buffer with all marked files."
 436   (interactive)
 437   (thumbs-show-thumbs-list (dired-get-marked-files) nil t))
 438
 439 ;;;###autoload
 440 (defun thumbs-dired-show-all ()
 441   "In dired, make a thumbs buffer with all files in current directory."
 442   (interactive)
 443   (thumbs-show-all-from-dir default-directory nil t))
 444
 445 ;;;###autoload
 446 (defalias 'thumbs 'thumbs-show-all-from-dir)
 447
 448 (defun thumbs-find-image (img L &optional num otherwin)
 449   (funcall
 450    (if otherwin 'switch-to-buffer-other-window 'switch-to-buffer)
 451    (concat "*Image: " (file-name-nondirectory img) " - "
 452            (number-to-string (or num 0)) "*"))
 453   (thumbs-view-image-mode)
 454   (let ((inhibit-read-only t))
 455     (setq thumbs-current-image-filename img
 456           thumbs-current-tmp-filename nil
 457           thumbs-image-num (or num 0))
 458     (make-variable-buffer-local 'thumbs-current-image-filename)
 459     (make-variable-buffer-local 'thumbs-current-tmp-filename)
 460     (make-variable-buffer-local 'thumbs-current-image-size)
 461     (make-variable-buffer-local 'thumbs-image-num)
 462     (make-variable-buffer-local 'thumbs-fileL)
 463     (setq thumbs-fileL L)
 464     (delete-region (point-min)(point-max))
 465     (thumbs-insert-image img (thumbs-image-type img) 0)))
 466
 467 (defun thumbs-find-image-at-point (&optional img otherwin)
 468   "Display image IMG for thumbnail at point.
 469 use another window it OTHERWIN is t."
 470   (interactive)
 471   (let* ((L thumbs-fileL)
 472          (n (point))
 473          (i (or img (cdr (assoc n L)))))
 474     (thumbs-find-image i L n otherwin)))
 475
 476 (defun thumbs-find-image-at-point-other-window ()
 477   "Display image for thumbnail at point in the preview buffer.
 478 Open another window."
 479   (interactive)
 480   (thumbs-find-image-at-point nil t))
 481
 482 (defun thumbs-call-setroot-command (img)
 483   "Call the setroot program for IMG."
 484   (run-hooks 'thumbs-before-setroot-hook)
 485   (shell-command (replace-regexp-in-string
 486                   "\\*"
 487                   (shell-quote-argument (expand-file-name img))
 488                   thumbs-setroot-command nil t))
 489   (run-hooks 'thumbs-after-setroot-hook))
 490
 491 (defun thumbs-set-image-at-point-to-root-window ()
 492   "Set the image at point as the desktop wallpaper."
 493   (interactive)
 494   (thumbs-call-setroot-command (cdr (assoc (point) thumbs-fileL))))
 495
 496 (defun thumbs-set-root ()
 497   "Set the current image as root."
 498   (interactive)
 499   (thumbs-call-setroot-command
 500    (or thumbs-current-tmp-filename
 501        thumbs-current-image-filename)))
 502
 503 (defun thumbs-delete-images ()
 504   "Delete the image at point (and it's thumbnail) (or marked files if any)."
 505   (interactive)
 506   (let ((f (or thumbs-markedL (list (cdr (assoc (point) thumbs-fileL))))))
 507     (if (yes-or-no-p (format "Really delete %d files? " (length f)))
 508         (progn
 509           (mapcar (lambda (x)
 510                     (setq thumbs-fileL (delete (rassoc x thumbs-fileL) thumbs-fileL))
 511                     (delete-file x)
 512                     (delete-file (thumbs-thumbname x))) f)
 513           (thumbs-redraw-buffer)))))
 514
 515 (defun thumbs-kill-buffer ()
 516   "Kill the current buffer."
 517   (interactive)
 518   (let ((buffer (current-buffer)))
 519     (ignore-errors (delete-window (selected-window)))
 520     (kill-buffer buffer)))
 521
 522 (defun thumbs-show-image-num (num)
 523   "Show the image with number NUM."
 524   (let ((inhibit-read-only t))
 525     (delete-region (point-min)(point-max))
 526     (let ((i (cdr (assoc num thumbs-fileL))))
 527       (thumbs-insert-image i (thumbs-image-type i) 0)
 528       (sleep-for 2)
 529       (rename-buffer (concat "*Image: "
 530                              (file-name-nondirectory i)
 531                              " - "
 532                              (number-to-string num) "*"))
 533       (setq thumbs-image-num num
 534             thumbs-current-image-filename i))))
 535
 536 (defun thumbs-next-image ()
 537   "Show next image."
 538   (interactive)
 539   (let* ((i (1+ thumbs-image-num))
 540          (l (caar thumbs-fileL))
 541          (num
 542           (cond ((assoc i thumbs-fileL) i)
 543                 ((>= i l) 1)
 544                 (t (1+ i)))))
 545     (thumbs-show-image-num num)))
 546
 547 (defun thumbs-previous-image ()
 548   "Show the previous image."
 549   (interactive)
 550   (let* ((i (- thumbs-image-num 1))
 551          (l (caar thumbs-fileL))
 552          (num
 553           (cond ((assoc i thumbs-fileL) i)
 554                 ((<= i 1) l)
 555                 (t (- i 1)))))
 556     (thumbs-show-image-num num)))
 557
 558 (defun thumbs-redraw-buffer ()
 559   "Redraw the current thumbs buffer."
 560   (let ((p (point))
 561         (inhibit-read-only t))
 562     (delete-region (point-min)(point-max))
 563     (thumbs-do-thumbs-insertion (reverse (mapcar 'cdr thumbs-fileL)))
 564     (goto-char (1+ p))))
 565
 566 (defun thumbs-mark ()
 567   "Mark the image at point."
 568   (interactive)
 569   (setq thumbs-markedL (cons (cdr (assoc (point) thumbs-fileL)) thumbs-markedL))
 570   (let ((inhibit-read-only t))
 571     (delete-char 1)
 572     (thumbs-insert-thumb (cdr (assoc (point) thumbs-fileL)) t))
 573   (when (eolp)(forward-char)))
 574
 575 ;; Image modification routines
 576
 577 (defun thumbs-modify-image (action &optional arg)
 578   "Call convert to do ACTION on image with argument ARG.
 579 ACTION and ARG should be legal convert command."
 580   (interactive "sAction: \nsValue: ")
 581   ;; cleaning of old temp file
 582   (mapc 'delete-file
 583         (directory-files
 584          thumbs-temp-dir
 585          t
 586          thumbs-temp-prefix))
 587   (let ((buffer-read-only nil)
 588         (tmp (format "%s%s.jpg" thumbs-temp-file (thumbs-gensym))))
 589     (erase-buffer)
 590     (thumbs-call-convert thumbs-current-image-filename
 591                          tmp
 592                          action
 593                          (or arg ""))
 594     (thumbs-insert-image tmp 'jpeg 0)
 595     (setq thumbs-current-tmp-filename tmp)))
 596
 597 (defun thumbs-emboss-image (emboss)
 598   "Emboss the image with value EMBOSS."
 599   (interactive "nEmboss value: ")
 600   (if (or (< emboss 3) (> emboss 31) (zerop (logand emboss 1)))
 601       (error "Arg must be a odd number between 3 and 31"))
 602   (thumbs-modify-image "emboss" (number-to-string emboss)))
 603
 604 (defun thumbs-monochrome-image ()
 605   "Turn the image to monochrome."
 606   (interactive)
 607   (thumbs-modify-image "monochrome"))
 608
 609 (defun thumbs-negate-image ()
 610   "Negate the image."
 611   (interactive)
 612   (thumbs-modify-image "negate"))
 613
 614 (defun thumbs-rotate-left ()
 615   "Rotate the image 90 degrees counter-clockwise."
 616   (interactive)
 617   (thumbs-modify-image "rotate" "270"))
 618
 619 (defun thumbs-rotate-right ()
 620   "Rotate the image 90 degrees clockwise."
 621   (interactive)
 622   (thumbs-modify-image "rotate" "90"))
 623
 624 (defun thumbs-forward-char ()
 625   "Move forward one image."
 626   (interactive)
 627   (forward-char)
 628   (when (eolp)(forward-char))
 629   (thumbs-show-name))
 630
 631 (defun thumbs-backward-char ()
 632   "Move backward one image."
 633   (interactive)
 634   (forward-char -1)
 635   (thumbs-show-name))
 636
 637 (defun thumbs-forward-line ()
 638   "Move down one line."
 639   (interactive)
 640   (forward-line 1)
 641   (thumbs-show-name))
 642
 643 (defun thumbs-backward-line ()
 644   "Move up one line."
 645   (interactive)
 646   (forward-line -1)
 647   (thumbs-show-name))
 648
 649 (defun thumbs-show-name ()
 650   "Show the name of the current file."
 651   (interactive)
 652   (let ((f (cdr (assoc (point) thumbs-fileL))))
 653     (message "%s [%s]" f (thumbs-file-size f))))
 654
 655 (defun thumbs-save-current-image ()
 656   "Save the current image."
 657   (interactive)
 658   (let ((f (or thumbs-current-tmp-filename
 659                thumbs-current-image-filename))
 660         (sa (read-from-minibuffer "save file as: "
 661                                   thumbs-current-image-filename)))
 662     (copy-file f sa)))
 663
 664 (defun thumbs-dired ()
 665   "Use `dired' on the current thumbs directory."
 666   (interactive)
 667   (dired thumbs-current-dir))
 668
 669 ;; thumbs-mode
 670
 671 (defvar thumbs-mode-map
 672   (let ((map (make-sparse-keymap)))
 673     (define-key map [return] 'thumbs-find-image-at-point)
 674     (define-key map [(meta return)] 'thumbs-find-image-at-point-other-window)
 675     (define-key map [(control return)] 'thumbs-set-image-at-point-to-root-window)
 676     (define-key map [delete] 'thumbs-delete-images)
 677     (define-key map [right] 'thumbs-forward-char)
 678     (define-key map [left] 'thumbs-backward-char)
 679     (define-key map [up] 'thumbs-backward-line)
 680     (define-key map [down] 'thumbs-forward-line)
 681     (define-key map "d" 'thumbs-dired)
 682     (define-key map "m" 'thumbs-mark)
 683     (define-key map "s" 'thumbs-show-name)
 684     (define-key map "q" 'thumbs-kill-buffer)
 685     map)
 686   "Keymap for `thumbs-mode'.")
 687
 688 (define-derived-mode thumbs-mode
 689   fundamental-mode "thumbs"
 690   "Preview images in a thumbnails buffer"
 691   (make-variable-buffer-local 'thumbs-markedL)
 692   (setq thumbs-markedL nil))
 693
 694 (defvar thumbs-view-image-mode-map
 695   (let ((map (make-sparse-keymap)))
 696     (define-key map [prior] 'thumbs-previous-image)
 697     (define-key map [next] 'thumbs-next-image)
 698     (define-key map "-" 'thumbs-resize-image-size-down)
 699     (define-key map "+" 'thumbs-resize-image-size-up)
 700     (define-key map "<" 'thumbs-rotate-left)
 701     (define-key map ">" 'thumbs-rotate-right)
 702     (define-key map "e" 'thumbs-emboss-image)
 703     (define-key map "r" 'thumbs-resize-interactive)
 704     (define-key map "s" 'thumbs-save-current-image)
 705     (define-key map "q" 'thumbs-kill-buffer)
 706     (define-key map "w" 'thunbs-set-root)
 707     map)
 708   "Keymap for `thumbs-view-image-mode'.")
 709
 710 ;; thumbs-view-image-mode
 711 (define-derived-mode thumbs-view-image-mode
 712   fundamental-mode "image-view-mode")
 713
 714 ;;;###autoload
 715 (defun thumbs-dired-setroot ()
 716   "In dired, Call the setroot program on the image at point."
 717   (interactive)
 718   (thumbs-call-setroot-command (dired-get-filename)))
 719
 720 ;; Modif to dired mode map
 721 (define-key dired-mode-map "\C-ta" 'thumbs-dired-show-all)
 722 (define-key dired-mode-map "\C-tm" 'thumbs-dired-show-marked)
 723 (define-key dired-mode-map "\C-tw" 'thumbs-dired-setroot)
 724
 725 (provide 'thumbs)
 726
 727 ;;; thumbs.el ends here
 728
 729
 730 ;;; arch-tag: f9ac1ef8-83fc-42c0-8069-1fae43fd2e5c