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 'time-less-p))
 193   (defun time-less-p (t1 t2)
 194     "Say whether time T1 is less than time T2."
 195     (or (< (car t1) (car t2))
 196         (and (= (car t1) (car t2))
 197              (< (nth 1 t1) (nth 1 t2))))))
 198
 199 (when (not (fboundp 'caddar))
 200   (defun caddar (x)
 201     "Return the `car' of the `cdr' of the `cdr' of the `car' of X."
 202     (car (cdr (cdr (car x))))))
 203
 204 (defvar thumbs-gensym-counter 0)
 205
 206 (defun thumbs-gensym (&optional arg)
 207   "Generate a new uninterned symbol.
 208 The name is made by appending a number to PREFIX, default \"Thumbs\"."
 209   (let ((prefix (if (stringp arg) arg "Thumbs"))
 210         (num (if (integerp arg) arg
 211                (prog1
 212                    thumbs-gensym-counter
 213                  (setq thumbs-gensym-counter (1+ thumbs-gensym-counter))))))
 214     (make-symbol (format "%s%d" prefix num))))
 215
 216 (defun thumbs-cleanup-thumbsdir ()
 217   "Clean the thumbnails directory.
 218 If the total size of all files in 'thumbs-thumbsdir' is bigger than
 219 'thumbs-thumbsdir-max-size', files are deleted until the max size is
 220 reached."
 221   (let* ((filesL
 222           (sort
 223            (mapcar
 224             (lambda (f)
 225               (let ((fattribsL (file-attributes f)))
 226                 `(,(nth 4 fattribsL) ,(nth 7 fattribsL) ,f)))
 227             (directory-files thumbs-thumbsdir t (image-file-name-regexp)))
 228            '(lambda (l1 l2) (time-less-p (car l1)(car l2)))))
 229          (dirsize (apply '+ (mapcar (lambda (x) (cadr x)) filesL))))
 230     (while (> dirsize thumbs-thumbsdir-max-size)
 231       (progn
 232         (message "Deleting file %s" (caddar filesL)))
 233       (delete-file (caddar filesL))
 234       (setq dirsize (- dirsize (cadar filesL)))
 235       (setq filesL (cdr filesL)))))
 236
 237 ;; Check the thumbsnail directory size and clean it if necessary.
 238 (when thumbs-thumbsdir-auto-clean
 239   (thumbs-cleanup-thumbsdir))
 240
 241 (defun thumbs-call-convert (filein fileout action
 242                                    &optional arg output-format action-prefix)
 243   "Call the convert program.
 244 FILEIN is the input file,
 245 FILEOUT is the output file,
 246 ACTION is the command to send to convert.
 247 Optional argument are:
 248 ARG any arguments to the ACTION command,
 249 OUTPUT-FORMAT is the file format to output, default is jpeg
 250 ACTION-PREFIX is the symbol to place before the ACTION command
 251               (default to '-' but can sometime be '+')."
 252   (let ((command (format "%s %s%s %s \"%s\" \"%s:%s\""
 253                          thumbs-conversion-program
 254                          (or action-prefix "-")
 255                          action
 256                          (or arg "")
 257                          filein
 258                          (or output-format "jpeg")
 259                          fileout)))
 260     (shell-command command)))
 261
 262 (defun thumbs-increment-image-size-element (n d)
 263   "Increment number N by D percent."
 264   (round (+ n (/ (* d n) 100))))
 265
 266 (defun thumbs-decrement-image-size-element (n d)
 267   "Decrement number N by D percent."
 268   (round (- n (/ (* d n) 100))))
 269
 270 (defun thumbs-increment-image-size (s)
 271   "Increment S (a cons of width x heigh)."
 272   (cons
 273    (thumbs-increment-image-size-element (car s)
 274                                         thumbs-image-resizing-step)
 275    (thumbs-increment-image-size-element (cdr s)
 276                                         thumbs-image-resizing-step)))
 277
 278 (defun thumbs-decrement-image-size (s)
 279   "Decrement S (a cons of width x heigh)."
 280   (cons
 281    (thumbs-decrement-image-size-element (car s)
 282                                         thumbs-image-resizing-step)
 283    (thumbs-decrement-image-size-element (cdr s)
 284                                         thumbs-image-resizing-step)))
 285
 286 (defun thumbs-resize-image (&optional increment size)
 287   "Resize image in current buffer.
 288 if INCREMENT is set, make the image bigger, else smaller.
 289 Or, alternatively, a SIZE may be specified."
 290   (interactive)
 291   ;; cleaning of old temp file
 292   (ignore-errors
 293     (apply 'delete-file
 294            (directory-files
 295             thumbs-temp-dir t
 296             thumbs-temp-prefix)))
 297   (let ((buffer-read-only nil)
 298         (x (if size
 299                size
 300              (if increment
 301                  (thumbs-increment-image-size
 302                   thumbs-current-image-size)
 303                (thumbs-decrement-image-size
 304                 thumbs-current-image-size))))
 305         (tmp (format "%s%s.jpg" thumbs-temp-file (thumbs-gensym))))
 306     (erase-buffer)
 307     (thumbs-call-convert thumbs-current-image-filename
 308                          tmp "sample"
 309                          (concat (number-to-string (car x)) "x"
 310                                  (number-to-string (cdr x))))
 311     (thumbs-insert-image tmp 'jpeg 0)
 312     (setq thumbs-current-tmp-filename tmp)))
 313
 314 (defun thumbs-resize-interactive (width height)
 315   "Resize Image interactively to specified WIDTH and HEIGHT."
 316   (interactive "nWidth: \nnHeight: ")
 317   (thumbs-resize-image nil (cons width height)))
 318
 319 (defun thumbs-resize-image-size-down ()
 320   "Resize image (smaller)."
 321   (interactive)
 322   (thumbs-resize-image nil))
 323
 324 (defun thumbs-resize-image-size-up ()
 325   "Resize image (bigger)."
 326   (interactive)
 327   (thumbs-resize-image t))
 328
 329 (defun thumbs-subst-char-in-string (orig rep string)
 330   "Replace occurrences of character ORIG with character REP in STRING.
 331 Return the resulting (new) string.  -- (defun borowed to Dave Love)"
 332   (let ((string (copy-sequence string))
 333         (l (length string))
 334         (i 0))
 335     (while (< i l)
 336       (if (= (aref string i) orig)
 337           (aset string i rep))
 338       (setq i (1+ i)))
 339     string))
 340
 341 (defun thumbs-thumbname (img)
 342   "Return a thumbnail name for the image IMG."
 343   (concat thumbs-thumbsdir "/"
 344           (thumbs-subst-char-in-string
 345            ?\  ?\_
 346            (apply
 347             'concat
 348             (split-string
 349              (expand-file-name img) "/")))))
 350
 351 (defun thumbs-make-thumb (img)
 352   "Create the thumbnail for IMG."
 353   (let* ((fn (expand-file-name img))
 354          (tn (thumbs-thumbname img)))
 355     (if (or (not (file-exists-p tn))
 356             (not (equal (thumbs-file-size tn) thumbs-geometry)))
 357         (thumbs-call-convert fn tn "sample" thumbs-geometry))
 358     tn))
 359
 360 (defun thumbs-image-type (img)
 361   "Return image type from filename IMG."
 362   (cond ((string-match ".*\\.jpe?g\\'" img) 'jpeg)
 363         ((string-match ".*\\.xpm\\'" img) 'xpm)
 364         ((string-match ".*\\.xbm\\'" img) 'xbm)
 365         ((string-match ".*\\.gif\\'" img) 'gif)
 366         ((string-match ".*\\.bmp\\'" img) 'bmp)
 367         ((string-match ".*\\.png\\'" img) 'png)
 368         ((string-match ".*\\.tiff?\\'" img) 'tiff)))
 369
 370 (defun thumbs-file-size (img)
 371   (let ((i (image-size (find-image `((:type ,(thumbs-image-type img) :file ,img))) t)))
 372     (concat (number-to-string (round (car i)))
 373             "x"
 374             (number-to-string (round (cdr i))))))
 375
 376 ;;;###autoload
 377 (defun thumbs-find-thumb (img)
 378   "Display the thumbnail for IMG."
 379   (interactive "f")
 380   (find-file (thumbs-make-thumb img)))
 381
 382 (defun thumbs-insert-image (img type relief &optional marked)
 383   "Insert image IMG at point.
 384 TYPE and RELIEF will be used in constructing the image; see `image'
 385 in the emacs-lisp manual for further documentation.
 386 if MARKED is non-nil, the image is marked."
 387   (let ((i `(image :type ,type
 388                    :file ,img
 389                    :relief ,relief
 390                    :conversion ,(if marked 'disabled)
 391                    :margin ,thumbs-margin)))
 392     (insert-image i)
 393     (setq thumbs-current-image-size
 394           (image-size i t))))
 395
 396 (defun thumbs-insert-thumb (img &optional marked)
 397   "Insert the thumbnail for IMG at point.
 398 if MARKED is non-nil, the image is marked"
 399   (thumbs-insert-image
 400    (thumbs-make-thumb img) 'jpeg thumbs-relief marked))
 401
 402 (defun thumbs-do-thumbs-insertion (L)
 403   "Insert all thumbs in list L."
 404   (setq thumbs-fileL nil)
 405   (let ((i 0))
 406     (while L
 407       (when (= 0 (mod (setq i (1+ i)) thumbs-per-line))
 408         (newline))
 409       (setq thumbs-fileL (cons (cons (point)
 410                                      (car L))
 411                                thumbs-fileL))
 412       (thumbs-insert-thumb (car L)
 413                            (member (car L) thumbs-markedL))
 414       (setq L (cdr L)))))
 415
 416 (defun thumbs-show-thumbs-list (L &optional buffer-name same-window)
 417   (funcall (if same-window 'switch-to-buffer 'pop-to-buffer)
 418            (or buffer-name "*THUMB-View*"))
 419   (let ((inhibit-read-only t))
 420     (erase-buffer)
 421     (thumbs-mode)
 422     (make-variable-buffer-local 'thumbs-fileL)
 423     (setq thumbs-fileL nil)
 424     (thumbs-do-thumbs-insertion L)
 425     (goto-char (point-min))
 426     (setq thumbs-current-dir default-directory)
 427     (make-variable-buffer-local 'thumbs-current-dir)))
 428
 429 ;;;###autoload
 430 (defun thumbs-show-all-from-dir (dir &optional reg same-window)
 431   "Make a preview buffer for all images in DIR.
 432 Optional argument REG to select file matching a regexp,
 433 and SAME-WINDOW to show thumbs in the same window."
 434   (interactive "DDir: ")
 435   (thumbs-show-thumbs-list
 436    (directory-files dir t
 437                     (or reg (image-file-name-regexp)))
 438    (concat "*Thumbs: " dir) same-window))
 439
 440 ;;;###autoload
 441 (defun thumbs-dired-show-marked ()
 442   "In Dired, make a thumbs buffer with all marked files."
 443   (interactive)
 444   (thumbs-show-thumbs-list (dired-get-marked-files) nil t))
 445
 446 ;;;###autoload
 447 (defun thumbs-dired-show-all ()
 448   "In dired, make a thumbs buffer with all files in current directory."
 449   (interactive)
 450   (thumbs-show-all-from-dir default-directory nil t))
 451
 452 ;;;###autoload
 453 (defalias 'thumbs 'thumbs-show-all-from-dir)
 454
 455 (defun thumbs-find-image (img L &optional num otherwin)
 456   (funcall
 457    (if otherwin 'switch-to-buffer-other-window 'switch-to-buffer)
 458    (concat "*Image: " (file-name-nondirectory img) " - "
 459            (number-to-string (or num 0)) "*"))
 460   (thumbs-view-image-mode)
 461   (let ((inhibit-read-only t))
 462     (setq thumbs-current-image-filename img
 463           thumbs-current-tmp-filename nil
 464           thumbs-image-num (or num 0))
 465     (make-variable-buffer-local 'thumbs-current-image-filename)
 466     (make-variable-buffer-local 'thumbs-current-tmp-filename)
 467     (make-variable-buffer-local 'thumbs-current-image-size)
 468     (make-variable-buffer-local 'thumbs-image-num)
 469     (make-variable-buffer-local 'thumbs-fileL)
 470     (setq thumbs-fileL L)
 471     (delete-region (point-min)(point-max))
 472     (thumbs-insert-image img (thumbs-image-type img) 0)))
 473
 474 (defun thumbs-find-image-at-point (&optional img otherwin)
 475   "Display image IMG for thumbnail at point.
 476 use another window it OTHERWIN is t."
 477   (interactive)
 478   (let* ((L thumbs-fileL)
 479          (n (point))
 480          (i (or img (cdr (assoc n L)))))
 481     (thumbs-find-image i L n otherwin)))
 482
 483 (defun thumbs-find-image-at-point-other-window ()
 484   "Display image for thumbnail at point in the preview buffer.
 485 Open another window."
 486   (interactive)
 487   (thumbs-find-image-at-point nil t))
 488
 489 (defun thumbs-call-setroot-command (img)
 490   "Call the setroot program for IMG."
 491   (run-hooks 'thumbs-before-setroot-hook)
 492   (shell-command (replace-regexp-in-string
 493                   "\\*"
 494                   (shell-quote-argument (expand-file-name img))
 495                   thumbs-setroot-command nil t))
 496   (run-hooks 'thumbs-after-setroot-hook))
 497
 498 (defun thumbs-set-image-at-point-to-root-window ()
 499   "Set the image at point as the desktop wallpaper."
 500   (interactive)
 501   (thumbs-call-setroot-command (cdr (assoc (point) thumbs-fileL))))
 502
 503 (defun thumbs-set-root ()
 504   "Set the current image as root."
 505   (interactive)
 506   (thumbs-call-setroot-command
 507    (or thumbs-current-tmp-filename
 508        thumbs-current-image-filename)))
 509
 510 (defun thumbs-delete-images ()
 511   "Delete the image at point (and it's thumbnail) (or marked files if any)."
 512   (interactive)
 513   (let ((f (or thumbs-markedL (list (cdr (assoc (point) thumbs-fileL))))))
 514     (if (yes-or-no-p "Really delete %d files?" (length f))
 515         (progn
 516           (mapcar (lambda (x)
 517                     (setq thumbs-fileL (delete (rassoc x thumbs-fileL) thumbs-fileL))
 518                     (delete-file x)
 519                     (delete-file (thumbs-thumbname x))) f)
 520           (thumbs-redraw-buffer)))))
 521
 522 (defun thumbs-kill-buffer ()
 523   "Kill the current buffer."
 524   (interactive)
 525   (let ((buffer (current-buffer)))
 526     (ignore-errors (delete-window (selected-window)))
 527     (kill-buffer buffer)))
 528
 529 (defun thumbs-show-image-num (num)
 530   "Show the image with number NUM."
 531   (let ((inhibit-read-only t))
 532     (delete-region (point-min)(point-max))
 533     (let ((i (cdr (assoc num thumbs-fileL))))
 534       (thumbs-insert-image i (thumbs-image-type i) 0)
 535       (sleep-for 2)
 536       (rename-buffer (concat "*Image: "
 537                              (file-name-nondirectory i)
 538                              " - "
 539                              (number-to-string num) "*")))
 540     (setq thumbs-image-num num
 541           thumbs-current-image-filename i)))
 542
 543 (defun thumbs-next-image ()
 544   "Show next image."
 545   (interactive)
 546   (let* ((i (1+ thumbs-image-num))
 547          (l (caar thumbs-fileL))
 548          (num
 549           (cond ((assoc i thumbs-fileL) i)
 550                 ((>= i l) 1)
 551                 (t (1+ i)))))
 552     (thumbs-show-image-num num)))
 553
 554 (defun thumbs-previous-image ()
 555   "Show the previous image."
 556   (interactive)
 557   (let* ((i (- thumbs-image-num 1))
 558          (l (caar thumbs-fileL))
 559          (num
 560           (cond ((assoc i thumbs-fileL) i)
 561                 ((<= i 1) l)
 562                 (t (- i 1)))))
 563     (thumbs-show-image-num num)))
 564
 565 (defun thumbs-redraw-buffer ()
 566   "Redraw the current thumbs buffer."
 567   (let ((p (point))
 568         (inhibit-read-only t))
 569     (delete-region (point-min)(point-max))
 570     (thumbs-do-thumbs-insertion (reverse (mapcar 'cdr thumbs-fileL)))
 571     (goto-char (1+ p))))
 572
 573 (defun thumbs-mark ()
 574   "Mark the image at point."
 575   (interactive)
 576   (setq thumbs-markedL (cons (cdr (assoc (point) thumbs-fileL)) thumbs-markedL))
 577   (let ((inhibit-read-only t))
 578     (delete-char 1)
 579     (thumbs-insert-thumb (cdr (assoc (point) thumbs-fileL)) t))
 580   (when (eolp)(forward-char)))
 581
 582 ;; Image modification routines
 583
 584 (defun thumbs-modify-image (action &optional arg)
 585   "Call convert to do ACTION on image with argument ARG.
 586 ACTION and ARG should be legal convert command."
 587   (interactive "sAction: \nsValue: ")
 588   ;; cleaning of old temp file
 589   (mapc 'delete-file
 590         (directory-files
 591          thumbs-temp-dir
 592          t
 593          thumbs-temp-prefix))
 594   (let ((buffer-read-only nil)
 595         (tmp (format "%s%s.jpg" thumbs-temp-file (thumbs-gensym))))
 596     (erase-buffer)
 597     (thumbs-call-convert thumbs-current-image-filename
 598                          tmp
 599                          action
 600                          (or arg ""))
 601     (thumbs-insert-image tmp 'jpeg 0)
 602     (setq thumbs-current-tmp-filename tmp)))
 603
 604 (defun thumbs-emboss-image (emboss)
 605   "Emboss the image with value EMBOSS."
 606   (interactive "nEmboss value: ")
 607   (if (or (< emboss 3)(> emboss 31)(evenp emboss))
 608       (error "Arg must be a odd number between 3 and 31"))
 609   (thumbs-modify-image "emboss" (number-to-string emboss)))
 610
 611 (defun thumbs-monochrome-image ()
 612   "Turn the image to monochrome."
 613   (interactive)
 614   (thumbs-modify-image "monochrome"))
 615
 616 (defun thumbs-negate-image ()
 617   "Negate the image."
 618   (interactive)
 619   (thumbs-modify-image "negate"))
 620
 621 (defun thumbs-rotate-left ()
 622   "Rotate the image 90 degrees counter-clockwise."
 623   (interactive)
 624   (thumbs-modify-image "rotate" "270"))
 625
 626 (defun thumbs-rotate-right ()
 627   "Rotate the image 90 degrees clockwise."
 628   (interactive)
 629   (thumbs-modify-image "rotate" "90"))
 630
 631 (defun thumbs-forward-char ()
 632   "Move forward one image."
 633   (interactive)
 634   (forward-char)
 635   (when (eolp)(forward-char))
 636   (thumbs-show-name))
 637
 638 (defun thumbs-backward-char ()
 639   "Move backward one image."
 640   (interactive)
 641   (forward-char -1)
 642   (thumbs-show-name))
 643
 644 (defun thumbs-forward-line ()
 645   "Move down one line."
 646   (interactive)
 647   (forward-line 1)
 648   (thumbs-show-name))
 649
 650 (defun thumbs-backward-line ()
 651   "Move up one line."
 652   (interactive)
 653   (forward-line -1)
 654   (thumbs-show-name))
 655
 656 (defun thumbs-show-name ()
 657   "Show the name of the current file."
 658   (interactive)
 659   (let ((f (cdr (assoc (point) thumbs-fileL))))
 660     (message "%s [%s]" f (thumbs-file-size f))))
 661
 662 (defun thumbs-save-current-image ()
 663   "Save the current image."
 664   (interactive)
 665   (let ((f (or thumbs-current-tmp-filename
 666                thumbs-current-image-filename))
 667         (sa (read-from-minibuffer "save file as: "
 668                                   thumbs-current-image-filename)))
 669     (copy-file f sa)))
 670
 671 (defun thumbs-dired ()
 672   "Use `dired' on the current thumbs directory."
 673   (interactive)
 674   (dired thumbs-current-dir))
 675
 676 ;; thumbs-mode
 677
 678 (defvar thumbs-mode-map
 679   (let ((map (make-sparse-keymap)))
 680     (define-key map [return] 'thumbs-find-image-at-point)
 681     (define-key map [(meta return)] 'thumbs-find-image-at-point-other-window)
 682     (define-key map [(control return)] 'thumbs-set-image-at-point-to-root-window)
 683     (define-key map [delete] 'thumbs-delete-images)
 684     (define-key map [right] 'thumbs-forward-char)
 685     (define-key map [left] 'thumbs-backward-char)
 686     (define-key map [up] 'thumbs-backward-line)
 687     (define-key map [down] 'thumbs-forward-line)
 688     (define-key map "d" 'thumbs-dired)
 689     (define-key map "m" 'thumbs-mark)
 690     (define-key map "s" 'thumbs-show-name)
 691     (define-key map "q" 'thumbs-kill-buffer)
 692     map)
 693   "Keymap for `thumbs-mode'.")
 694
 695 (define-derived-mode thumbs-mode
 696   fundamental-mode "thumbs"
 697   "Preview images in a thumbnails buffer"
 698   (make-variable-buffer-local 'thumbs-markedL)
 699   (setq thumbs-markedL nil))
 700
 701 (defvar thumbs-view-image-mode-map
 702   (let ((map (make-sparse-keymap)))
 703     (define-key map [prior] 'thumbs-previous-image)
 704     (define-key map [next] 'thumbs-next-image)
 705     (define-key map "-" 'thumbs-resize-image-size-down)
 706     (define-key map "+" 'thumbs-resize-image-size-up)
 707     (define-key map "<" 'thumbs-rotate-left)
 708     (define-key map ">" 'thumbs-rotate-right)
 709     (define-key map "e" 'thumbs-emboss-image)
 710     (define-key map "r" 'thumbs-resize-interactive)
 711     (define-key map "s" 'thumbs-save-current-image)
 712     (define-key map "q" 'thumbs-kill-buffer)
 713     (define-key map "w" 'thunbs-set-root)
 714     map)
 715   "Keymap for `thumbs-view-image-mode'.")
 716
 717 ;; thumbs-view-image-mode
 718 (define-derived-mode thumbs-view-image-mode
 719   fundamental-mode "image-view-mode")
 720
 721 ;;;###autoload
 722 (defun thumbs-dired-setroot ()
 723   "In dired, Call the setroot program on the image at point."
 724   (interactive)
 725   (thumbs-call-setroot-command (dired-get-filename)))
 726
 727 ;; Modif to dired mode map
 728 (define-key dired-mode-map "\C-ta" 'thumbs-dired-show-all)
 729 (define-key dired-mode-map "\C-tm" 'thumbs-dired-show-marked)
 730 (define-key dired-mode-map "\C-tw" 'thumbs-dired-setroot)
 731
 732 (provide 'thumbs)
 733
 734 ;;; thumbs.el ends here
 735
 736