lisp/thumbs.el

   1 ;;; thumbs.el --- Thumbnails previewer for images files
   2
   3 ;; Copyright 2004 Free Software Foundation, Inc
   4
   5 ;; Author: Jean-Philippe Theberge <jphiltheberge@videotron.ca>
   6 ;; Keywords: Multimedia
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software; you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation; either version 2, or (at your option)
  13 ;; any later version.
  14
  15 ;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  23 ;; Boston, MA 02111-1307, USA.
  24 ;;
  25 ;; Thanks: Alex Schroeder <alex@gnu.org> for maintaining the package at some time
  26 ;;         The peoples at #emacs@freenode.net for numerous help
  27 ;;         RMS for emacs and the GNU project.
  28 ;;
  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 ;; CUSTOMIZATIONS
  62
  63 (defgroup thumbs nil
  64   "Thumbnails previewer."
  65   :group 'multimedia)
  66
  67 (defcustom thumbs-thumbsdir
  68   (expand-file-name "~/.emacs-thumbs")
  69   "*Directory to store thumbnails."
  70   :type 'directory
  71   :group 'thumbs)
  72
  73 (defcustom thumbs-geometry "100x100"
  74   "*Size of thumbnails."
  75   :type 'string
  76   :group 'thumbs)
  77
  78 (defcustom thumbs-per-line 5
  79   "*Number of thumbnails per line to show in directory."
  80   :type 'string
  81   :group 'thumbs)
  82
  83 (defcustom thumbs-thumbsdir-max-size 50000000
  84   "Max size for thumbnails directory.
  85 When it reach that size (in bytes), a warning is send."
  86   :type 'string
  87   :group 'thumbs)
  88
  89 (defcustom thumbs-conversion-program
  90   (if (equal 'windows-nt system-type)
  91       "convert.exe"
  92     (or (executable-find "convert")
  93         "/usr/X11R6/bin/convert"))
  94   "*Name of conversion program for thumbnails generation.
  95 It must be 'convert'."
  96   :type 'string
  97   :group 'thumbs)
  98
  99 (defcustom thumbs-setroot-command
 100   "xloadimage -onroot -fullscreen *"
 101   "Command to set the root window."
 102   :type 'string
 103   :group 'thumbs)
 104
 105 (defcustom thumbs-relief 5
 106   "*Size of button-like border around thumbnails."
 107   :type 'string
 108   :group 'thumbs)
 109
 110 (defcustom thumbs-margin 2
 111   "*Size of the margin around thumbnails.
 112 This is where you see the cursor."
 113   :type 'string
 114   :group 'thumbs)
 115
 116 (defcustom thumbs-thumbsdir-auto-clean t
 117   "If set, delete older file in the thumbnails directory.
 118 Deletion is done at load time when the directory size is bigger
 119 than 'thumbs-thumbsdir-max-size'."
 120   :type 'boolean
 121   :group 'thumbs)
 122
 123 (defcustom thumbs-image-resizing-step 10
 124   "Step by wich to resize image."
 125   :type 'string
 126   :group 'thumbs)
 127
 128 (defcustom thumbs-temp-dir
 129   "/tmp/"
 130   "Temporary directory to use.
 131 Leaving it to default '/tmp/' can let another user
 132 see some of your images."
 133   :type 'directory
 134   :group 'thumbs)
 135
 136 (defcustom thumbs-temp-prefix "emacsthumbs"
 137   "Prefix to add to temp files."
 138   :type 'string
 139   :group 'thumbs)
 140
 141 ;; Initialize some variable, for later use.
 142 (defvar thumbs-temp-file
 143   (concat thumbs-temp-dir thumbs-temp-prefix)
 144   "Temporary filesname for images.")
 145
 146 (defvar thumbs-current-tmp-filename
 147   nil
 148   "Temporary filename of current image.")
 149 (defvar thumbs-current-image-filename
 150   nil
 151   "Filename of current image.")
 152 (defvar thumbs-current-image-size
 153   nil
 154   "Size of current image.")
 155 (defvar thumbs-image-num
 156   nil
 157   "Number of current image.")
 158 (defvar thumbs-current-dir
 159   nil
 160   "Current directory.")
 161 (defvar thumbs-markedL
 162   nil
 163   "List of marked files.")
 164
 165 ;; Make sure auto-image-file-mode is ON.
 166 (auto-image-file-mode t)
 167
 168 ;; Create the thumbs directory if it does not exists.
 169 (setq thumbs-thumbsdir (expand-file-name thumbs-thumbsdir))
 170
 171 (when (not (file-directory-p thumbs-thumbsdir))
 172   (progn
 173     (make-directory thumbs-thumbsdir)
 174     (message "Creating thumbnails directory")))
 175
 176 (defvar thumbs-gensym-counter 0)
 177
 178 (defun thumbs-gensym (&optional arg)
 179   "Generate a new uninterned symbol.
 180 The name is made by appending a number to PREFIX, default \"Thumbs\"."
 181   (let ((prefix (if (stringp arg) arg "Thumbs"))
 182         (num (if (integerp arg) arg
 183                (prog1
 184                    thumbs-gensym-counter
 185                  (setq thumbs-gensym-counter (1+ thumbs-gensym-counter))))))
 186     (make-symbol (format "%s%d" prefix num))))
 187
 188 (defun thumbs-cleanup-thumbsdir ()
 189   "Clean the thumbnails directory.
 190 If the total size of all files in 'thumbs-thumbsdir' is bigger than
 191 'thumbs-thumbsdir-max-size', files are deleted until the max size is
 192 reached."
 193   (let* ((filesL
 194           (sort
 195            (mapcar
 196             (lambda (f)
 197               (let ((fattribsL (file-attributes f)))
 198                 `(,(nth 4 fattribsL) ,(nth 7 fattribsL) ,f)))
 199             (directory-files thumbs-thumbsdir t (image-file-name-regexp)))
 200            '(lambda (l1 l2) (time-less-p (car l1)(car l2)))))
 201          (dirsize (apply '+ (mapcar (lambda (x) (cadr x)) filesL))))
 202     (while (> dirsize thumbs-thumbsdir-max-size)
 203       (progn
 204         (message "Deleting file %s" (cadr (cdar filesL))))
 205       (delete-file (cadr (cdar filesL)))
 206       (setq dirsize (- dirsize (car (cdar filesL))))
 207       (setq filesL (cdr filesL)))))
 208
 209 ;; Check the thumbsnail directory size and clean it if necessary.
 210 (when thumbs-thumbsdir-auto-clean
 211   (thumbs-cleanup-thumbsdir))
 212
 213 (defun thumbs-call-convert (filein fileout action
 214                                    &optional arg output-format action-prefix)
 215   "Call the convert program.
 216 FILEIN is the input file,
 217 FILEOUT is the output file,
 218 ACTION is the command to send to convert.
 219 Optional argument are:
 220 ARG any arguments to the ACTION command,
 221 OUTPUT-FORMAT is the file format to output, default is jpeg
 222 ACTION-PREFIX is the symbol to place before the ACTION command
 223               (default to '-' but can sometime be '+')."
 224   (let ((command (format "%s %s%s %s \"%s\" \"%s:%s\""
 225                          thumbs-conversion-program
 226                          (or action-prefix "-")
 227                          action
 228                          (or arg "")
 229                          filein
 230                          (or output-format "jpeg")
 231                          fileout)))
 232     (shell-command command)))
 233
 234 (defun thumbs-increment-image-size-element (n d)
 235   "Increment number N by D percent."
 236   (round (+ n (/ (* d n) 100))))
 237
 238 (defun thumbs-decrement-image-size-element (n d)
 239   "Decrement number N by D percent."
 240   (round (- n (/ (* d n) 100))))
 241
 242 (defun thumbs-increment-image-size (s)
 243   "Increment S (a cons of width x heigh)."
 244   (cons
 245    (thumbs-increment-image-size-element (car s)
 246                                         thumbs-image-resizing-step)
 247    (thumbs-increment-image-size-element (cdr s)
 248                                         thumbs-image-resizing-step)))
 249
 250 (defun thumbs-decrement-image-size (s)
 251   "Decrement S (a cons of width x heigh)."
 252   (cons
 253    (thumbs-decrement-image-size-element (car s)
 254                                         thumbs-image-resizing-step)
 255    (thumbs-decrement-image-size-element (cdr s)
 256                                         thumbs-image-resizing-step)))
 257
 258 (defun thumbs-resize-image (&optional increment size)
 259   "Resize image in current buffer.
 260 if INCREMENT is set, make the image bigger, else smaller.
 261 Or, alternatively, a SIZE may be specified."
 262   (interactive)
 263   ;; cleaning of old temp file
 264   (condition-case nil
 265     (apply 'delete-file
 266            (directory-files
 267             thumbs-temp-dir t
 268             thumbs-temp-prefix))
 269     (error nil))
 270   (let ((buffer-read-only nil)
 271         (x (if size
 272                size
 273              (if increment
 274                  (thumbs-increment-image-size
 275                   thumbs-current-image-size)
 276                (thumbs-decrement-image-size
 277                 thumbs-current-image-size))))
 278         (tmp (format "%s%s.jpg" thumbs-temp-file (thumbs-gensym))))
 279     (erase-buffer)
 280     (thumbs-call-convert thumbs-current-image-filename
 281                          tmp "sample"
 282                          (concat (number-to-string (car x)) "x"
 283                                  (number-to-string (cdr x))))
 284     (thumbs-insert-image tmp 'jpeg 0)
 285     (setq thumbs-current-tmp-filename tmp)))
 286
 287 (defun thumbs-resize-interactive (width height)
 288   "Resize Image interactively to specified WIDTH and HEIGHT."
 289   (interactive "nWidth: \nnHeight: ")
 290   (thumbs-resize-image nil (cons width height)))
 291
 292 (defun thumbs-resize-image-size-down ()
 293   "Resize image (smaller)."
 294   (interactive)
 295   (thumbs-resize-image nil))
 296
 297 (defun thumbs-resize-image-size-up ()
 298   "Resize image (bigger)."
 299   (interactive)
 300   (thumbs-resize-image t))
 301
 302 (defun thumbs-thumbname (img)
 303   "Return a thumbnail name for the image IMG."
 304   (concat thumbs-thumbsdir "/"
 305           (subst-char-in-string
 306            ?\  ?\_
 307            (apply
 308             'concat
 309             (split-string
 310              (expand-file-name img) "/")))))
 311
 312 (defun thumbs-make-thumb (img)
 313   "Create the thumbnail for IMG."
 314   (let* ((fn (expand-file-name img))
 315          (tn (thumbs-thumbname img)))
 316     (if (or (not (file-exists-p tn))
 317             ;;  This is not the right fix, but I don't understand
 318             ;;  the external program or why it produces a geometry
 319             ;;  unequal to the one requested -- rms.
 320 ;;;         (not (equal (thumbs-file-size tn) thumbs-geometry))
 321             )
 322         (thumbs-call-convert fn tn "sample" thumbs-geometry))
 323     tn))
 324
 325 (defun thumbs-image-type (img)
 326   "Return image type from filename IMG."
 327   (cond ((string-match ".*\\.jpe?g\\'" img) 'jpeg)
 328         ((string-match ".*\\.xpm\\'" img) 'xpm)
 329         ((string-match ".*\\.xbm\\'" img) 'xbm)
 330         ((string-match ".*\\.gif\\'" img) 'gif)
 331         ((string-match ".*\\.bmp\\'" img) 'bmp)
 332         ((string-match ".*\\.png\\'" img) 'png)
 333         ((string-match ".*\\.tiff?\\'" img) 'tiff)))
 334
 335 (defun thumbs-file-size (img)
 336   (let ((i (image-size (find-image `((:type ,(thumbs-image-type img) :file ,img))) t)))
 337     (concat (number-to-string (round (car i)))
 338             "x"
 339             (number-to-string (round (cdr i))))))
 340
 341 ;;;###autoload
 342 (defun thumbs-find-thumb (img)
 343   "Display the thumbnail for IMG."
 344   (interactive "f")
 345   (find-file (thumbs-make-thumb img)))
 346
 347 (defun thumbs-insert-image (img type relief &optional marked)
 348   "Insert image IMG at point.
 349 TYPE and RELIEF will be used in constructing the image; see `image'
 350 in the emacs-lisp manual for further documentation.
 351 if MARKED is non-nil, the image is marked."
 352   (let ((i `(image :type ,type
 353                    :file ,img
 354                    :relief ,relief
 355                    :conversion ,(if marked 'disabled)
 356                    :margin ,thumbs-margin)))
 357     (insert-image i)
 358     (setq thumbs-current-image-size
 359           (image-size i t))))
 360
 361 (defun thumbs-insert-thumb (img &optional marked)
 362   "Insert the thumbnail for IMG at point.
 363 if MARKED is non-nil, the image is marked"
 364   (thumbs-insert-image
 365    (thumbs-make-thumb img) 'jpeg thumbs-relief marked)
 366   (put-text-property (1- (point)) (point)
 367                      'thumb-image-file img))
 368
 369 (defun thumbs-do-thumbs-insertion (L)
 370   "Insert all thumbs in list L."
 371   (let ((i 0))
 372     (dolist (img L)
 373       (thumbs-insert-thumb img
 374                            (member img thumbs-markedL))
 375       (when (= 0 (mod (setq i (1+ i)) thumbs-per-line))
 376         (newline)))
 377     (unless (bobp) (newline))))
 378
 379 (defun thumbs-show-thumbs-list (L &optional buffer-name same-window)
 380   (when (not (display-images-p))
 381     (error "Images are not supported in this Emacs session"))
 382   (funcall (if same-window 'switch-to-buffer 'pop-to-buffer)
 383            (or buffer-name "*THUMB-View*"))
 384   (let ((inhibit-read-only t))
 385     (erase-buffer)
 386     (thumbs-mode)
 387     (thumbs-do-thumbs-insertion L)
 388     (goto-char (point-min))
 389     (setq thumbs-current-dir default-directory)
 390     (make-variable-buffer-local 'thumbs-current-dir)))
 391
 392 ;;;###autoload
 393 (defun thumbs-show-all-from-dir (dir &optional reg same-window)
 394   "Make a preview buffer for all images in DIR.
 395 Optional argument REG to select file matching a regexp,
 396 and SAME-WINDOW to show thumbs in the same window."
 397   (interactive "DDir: ")
 398   (thumbs-show-thumbs-list
 399    (directory-files dir t
 400                     (or reg (image-file-name-regexp)))
 401    (concat "*Thumbs: " dir) same-window))
 402
 403 ;;;###autoload
 404 (defun thumbs-dired-show-marked ()
 405   "In Dired, make a thumbs buffer with all marked files."
 406   (interactive)
 407   (thumbs-show-thumbs-list (dired-get-marked-files) nil t))
 408
 409 ;;;###autoload
 410 (defun thumbs-dired-show-all ()
 411   "In dired, make a thumbs buffer with all files in current directory."
 412   (interactive)
 413   (thumbs-show-all-from-dir default-directory nil t))
 414
 415 ;;;###autoload
 416 (defalias 'thumbs 'thumbs-show-all-from-dir)
 417
 418 (defun thumbs-find-image (img &optional num otherwin)
 419   (funcall
 420    (if otherwin 'switch-to-buffer-other-window 'switch-to-buffer)
 421    (concat "*Image: " (file-name-nondirectory img) " - "
 422            (number-to-string (or num 0)) "*"))
 423   (thumbs-view-image-mode)
 424   (let ((inhibit-read-only t))
 425     (setq thumbs-current-image-filename img
 426           thumbs-current-tmp-filename nil
 427           thumbs-image-num (or num 0))
 428     (make-variable-buffer-local 'thumbs-current-image-filename)
 429     (make-variable-buffer-local 'thumbs-current-tmp-filename)
 430     (make-variable-buffer-local 'thumbs-current-image-size)
 431     (make-variable-buffer-local 'thumbs-image-num)
 432     (delete-region (point-min)(point-max))
 433     (thumbs-insert-image img (thumbs-image-type img) 0)))
 434
 435 (defun thumbs-find-image-at-point (&optional img otherwin)
 436   "Display image IMG for thumbnail at point.
 437 use another window it OTHERWIN is t."
 438   (interactive)
 439   (let* ((i (or img (thumbs-current-image))))
 440     (thumbs-find-image i (point) otherwin)))
 441
 442 (defun thumbs-find-image-at-point-other-window ()
 443   "Display image for thumbnail at point in the preview buffer.
 444 Open another window."
 445   (interactive)
 446   (thumbs-find-image-at-point nil t))
 447
 448 (defun thumbs-mouse-find-image (event)
 449   "Display image for thumbnail at mouse click EVENT."
 450   (interactive "e")
 451   (mouse-set-point event)
 452   (thumbs-find-image-at-point))
 453
 454 (defun thumbs-call-setroot-command (img)
 455   "Call the setroot program for IMG."
 456   (run-hooks 'thumbs-before-setroot-hook)
 457   (shell-command (replace-regexp-in-string
 458                   "\\*"
 459                   (shell-quote-argument (expand-file-name img))
 460                   thumbs-setroot-command nil t))
 461   (run-hooks 'thumbs-after-setroot-hook))
 462
 463 (defun thumbs-set-image-at-point-to-root-window ()
 464   "Set the image at point as the desktop wallpaper."
 465   (interactive)
 466   (thumbs-call-setroot-command
 467    (thumbs-current-image)))
 468
 469 (defun thumbs-set-root ()
 470   "Set the current image as root."
 471   (interactive)
 472   (thumbs-call-setroot-command
 473    (or thumbs-current-tmp-filename
 474        thumbs-current-image-filename)))
 475
 476 (defun thumbs-file-alist ()
 477   "Make an alist of elements (POS . FILENAME) for all images in thumb buffer."
 478   (save-excursion
 479     (let (list)
 480       (goto-char (point-min))
 481       (while (not (eobp))
 482         (if (thumbs-current-image)
 483             (push (cons (point-marker)
 484                         (thumbs-current-image))
 485                   list))
 486         (forward-char 1))
 487       list)))
 488
 489 (defun thumbs-file-list ()
 490   "Make a list of file names for all images in thumb buffer."
 491   (save-excursion
 492     (let (list)
 493       (goto-char (point-min))
 494       (while (not (eobp))
 495         (if (thumbs-current-image)
 496             (push (thumbs-current-image) list))
 497         (forward-char 1))
 498       (nreverse list))))
 499
 500 (defun thumbs-delete-images ()
 501   "Delete the image at point (and it's thumbnail) (or marked files if any)."
 502   (interactive)
 503   (let ((files (or thumbs-markedL (list (thumbs-current-image)))))
 504     (if (yes-or-no-p (format "Really delete %d files? " (length files)))
 505         (let ((thumbs-fileL (thumbs-file-alist))
 506               (inhibit-read-only t))
 507           (dolist (x files)
 508             (let (failure)
 509               (condition-case ()
 510                   (progn
 511                     (delete-file x)
 512                     (delete-file (thumbs-thumbname x)))
 513                 (file-error (setq failure t)))
 514               (unless failure
 515                 (when (rassoc x thumbs-fileL)
 516                   (goto-char (car (rassoc x thumbs-fileL)))
 517                   (delete-region (point) (1+ (point))))
 518                 (setq thumbs-markedL
 519                       (delq x thumbs-markedL)))))))))
 520
 521 (defun thumbs-rename-images (newfile)
 522   "Rename the image at point (and it's thumbnail) (or marked files if any)."
 523   (interactive "FRename to file or directory: ")
 524   (let ((files (or thumbs-markedL (list (thumbs-current-image))))
 525         failures)
 526     (if (and (not (file-directory-p newfile))
 527              thumbs-markedL)
 528         (if (file-exists-p newfile)
 529             (error "Renaming marked files to file name `%s'" newfile)
 530           (make-directory newfile t)))
 531     (if (yes-or-no-p (format "Really rename %d files? " (length files)))
 532         (let ((thumbs-fileL (thumbs-file-alist))
 533               (inhibit-read-only t))
 534           (dolist (file files)
 535             (let (failure)
 536               (condition-case ()
 537                   (if (file-directory-p newfile)
 538                       (rename-file file
 539                                    (expand-file-name
 540                                     (file-name-nondirectory file)
 541                                     newfile))
 542                     (rename-file file newfile))
 543                 (file-error (setq failure t)
 544                             (push file failures)))
 545               (unless failure
 546                 (when (rassoc file thumbs-fileL)
 547                   (goto-char (car (rassoc file thumbs-fileL)))
 548                   (delete-region (point) (1+ (point))))
 549                 (setq thumbs-markedL
 550                       (delq file thumbs-markedL)))))))
 551     (if failures
 552         (display-warning 'file-error
 553                          (format "Rename failures for %s into %s"
 554                                  failures newfile)
 555                          :error))))
 556
 557 (defun thumbs-kill-buffer ()
 558   "Kill the current buffer."
 559   (interactive)
 560   (let ((buffer (current-buffer)))
 561     (condition-case nil
 562         (delete-window (selected-window))
 563       (error nil))
 564     (kill-buffer buffer)))
 565
 566 (defun thumbs-show-image-num (num)
 567   "Show the image with number NUM."
 568   (let ((image-buffer (get-buffer-create "*Image*")))
 569     (let ((i (thumbs-current-image)))
 570       (with-current-buffer image-buffer
 571         (thumbs-insert-image i (thumbs-image-type i) 0))
 572       (setq thumbs-image-num num
 573             thumbs-current-image-filename i))))
 574
 575 (defun thumbs-next-image ()
 576   "Show next image."
 577   (interactive)
 578   (let* ((i (1+ thumbs-image-num))
 579          (list (thumbs-file-alist))
 580          (l (caar list)))
 581     (while (and (/= i thumbs-image-num) (not (assoc i list)))
 582       (setq i (if (>= i l) 1 (1+ i))))
 583     (thumbs-show-image-num i)))
 584
 585 (defun thumbs-previous-image ()
 586   "Show the previous image."
 587   (interactive)
 588   (let* ((i (- thumbs-image-num 1))
 589          (list (thumbs-file-alist))
 590          (l (caar list)))
 591     (while (and (/= i thumbs-image-num) (not (assoc i list)))
 592       (setq i (if (<= i 1) l (1- i))))
 593     (thumbs-show-image-num i)))
 594
 595 (defun thumbs-redraw-buffer ()
 596   "Redraw the current thumbs buffer."
 597   (let ((p (point))
 598         (inhibit-read-only t)
 599         (files (thumbs-file-list)))
 600     (erase-buffer)
 601     (thumbs-do-thumbs-insertion files)
 602     (goto-char p)))
 603
 604 (defun thumbs-mark ()
 605   "Mark the image at point."
 606   (interactive)
 607   (let ((elt (thumbs-current-image)))
 608     (unless elt
 609       (error "No image here"))
 610     (push elt thumbs-markedL)
 611     (let ((inhibit-read-only t))
 612       (delete-char 1)
 613       (thumbs-insert-thumb elt t)))
 614   (when (eolp) (forward-char)))
 615
 616 (defun thumbs-unmark ()
 617   "Unmark the image at point."
 618   (interactive)
 619   (let ((elt (thumbs-current-image)))
 620     (unless elt
 621       (error "No image here"))
 622     (setq thumbs-markedL (delete elt thumbs-markedL))
 623     (let ((inhibit-read-only t))
 624       (delete-char 1)
 625       (thumbs-insert-thumb elt nil)))
 626   (when (eolp) (forward-char)))
 627
 628 ;; Image modification routines
 629
 630 (defun thumbs-modify-image (action &optional arg)
 631   "Call convert to do ACTION on image with argument ARG.
 632 ACTION and ARG should be legal convert command."
 633   (interactive "sAction: \nsValue: ")
 634   ;; cleaning of old temp file
 635   (mapc 'delete-file
 636         (directory-files
 637          thumbs-temp-dir
 638          t
 639          thumbs-temp-prefix))
 640   (let ((buffer-read-only nil)
 641         (tmp (format "%s%s.jpg" thumbs-temp-file (thumbs-gensym))))
 642     (erase-buffer)
 643     (thumbs-call-convert thumbs-current-image-filename
 644                          tmp
 645                          action
 646                          (or arg ""))
 647     (thumbs-insert-image tmp 'jpeg 0)
 648     (setq thumbs-current-tmp-filename tmp)))
 649
 650 (defun thumbs-emboss-image (emboss)
 651   "Emboss the image with value EMBOSS."
 652   (interactive "nEmboss value: ")
 653   (if (or (< emboss 3) (> emboss 31) (zerop (% emboss 2)))
 654       (error "Arg must be an odd number between 3 and 31"))
 655   (thumbs-modify-image "emboss" (number-to-string emboss)))
 656
 657 (defun thumbs-monochrome-image ()
 658   "Turn the image to monochrome."
 659   (interactive)
 660   (thumbs-modify-image "monochrome"))
 661
 662 (defun thumbs-negate-image ()
 663   "Negate the image."
 664   (interactive)
 665   (thumbs-modify-image "negate"))
 666
 667 (defun thumbs-rotate-left ()
 668   "Rotate the image 90 degrees counter-clockwise."
 669   (interactive)
 670   (thumbs-modify-image "rotate" "270"))
 671
 672 (defun thumbs-rotate-right ()
 673   "Rotate the image 90 degrees clockwise."
 674   (interactive)
 675   (thumbs-modify-image "rotate" "90"))
 676
 677 (defun thumbs-current-image ()
 678   "Return the name of the image file name at point."
 679   (get-text-property (point) 'thumb-image-file))
 680
 681 (defun thumbs-forward-char ()
 682   "Move forward one image."
 683   (interactive)
 684   (forward-char)
 685   (while (and (not (eobp)) (not (thumbs-current-image)))
 686     (forward-char))
 687   (thumbs-show-name))
 688
 689 (defun thumbs-backward-char ()
 690   "Move backward one image."
 691   (interactive)
 692   (forward-char -1)
 693   (while (and (not (bobp)) (not (thumbs-current-image)))
 694     (forward-char -1))
 695   (thumbs-show-name))
 696
 697 (defun thumbs-forward-line ()
 698   "Move down one line."
 699   (interactive)
 700   (forward-line 1)
 701   (thumbs-show-name))
 702
 703 (defun thumbs-backward-line ()
 704   "Move up one line."
 705   (interactive)
 706   (forward-line -1)
 707   (thumbs-show-name))
 708
 709 (defun thumbs-show-name ()
 710   "Show the name of the current file."
 711   (interactive)
 712   (let ((f (thumbs-current-image)))
 713     (and f (message "%s [%s]" f (thumbs-file-size f)))))
 714
 715 (defun thumbs-save-current-image ()
 716   "Save the current image."
 717   (interactive)
 718   (let ((f (or thumbs-current-tmp-filename
 719                thumbs-current-image-filename))
 720         (sa (read-from-minibuffer "Save image file as: "
 721                                   thumbs-current-image-filename)))
 722     (copy-file f sa)))
 723
 724 (defun thumbs-dired ()
 725   "Use `dired' on the current thumbs directory."
 726   (interactive)
 727   (dired thumbs-current-dir))
 728
 729 ;; thumbs-mode
 730
 731 (defvar thumbs-mode-map
 732   (let ((map (make-sparse-keymap)))
 733     (define-key map [return] 'thumbs-find-image-at-point)
 734     (define-key map [mouse-2] 'thumbs-mouse-find-image)
 735     (define-key map [(meta return)] 'thumbs-find-image-at-point-other-window)
 736     (define-key map [(control return)] 'thumbs-set-image-at-point-to-root-window)
 737     (define-key map [delete] 'thumbs-delete-images)
 738     (define-key map [right] 'thumbs-forward-char)
 739     (define-key map [left] 'thumbs-backward-char)
 740     (define-key map [up] 'thumbs-backward-line)
 741     (define-key map [down] 'thumbs-forward-line)
 742     (define-key map "d" 'thumbs-dired)
 743     (define-key map "m" 'thumbs-mark)
 744     (define-key map "u" 'thumbs-unmark)
 745     (define-key map "R" 'thumbs-rename-images)
 746     (define-key map "x" 'thumbs-delete-images)
 747     (define-key map "s" 'thumbs-show-name)
 748     (define-key map "q" 'thumbs-kill-buffer)
 749     map)
 750   "Keymap for `thumbs-mode'.")
 751
 752 (put 'thumbs-mode 'mode-class 'special)
 753 (define-derived-mode thumbs-mode
 754   fundamental-mode "thumbs"
 755   "Preview images in a thumbnails buffer"
 756   (make-variable-buffer-local 'thumbs-markedL)
 757   (setq buffer-read-only t)
 758   (setq thumbs-markedL nil))
 759
 760 (defvar thumbs-view-image-mode-map
 761   (let ((map (make-sparse-keymap)))
 762     (define-key map [prior] 'thumbs-previous-image)
 763     (define-key map [next] 'thumbs-next-image)
 764     (define-key map "-" 'thumbs-resize-image-size-down)
 765     (define-key map "+" 'thumbs-resize-image-size-up)
 766     (define-key map "<" 'thumbs-rotate-left)
 767     (define-key map ">" 'thumbs-rotate-right)
 768     (define-key map "e" 'thumbs-emboss-image)
 769     (define-key map "r" 'thumbs-resize-interactive)
 770     (define-key map "s" 'thumbs-save-current-image)
 771     (define-key map "q" 'thumbs-kill-buffer)
 772     (define-key map "w" 'thunbs-set-root)
 773     map)
 774   "Keymap for `thumbs-view-image-mode'.")
 775
 776 ;; thumbs-view-image-mode
 777 (put 'thumbs-view-image-mode 'mode-class 'special)
 778 (define-derived-mode thumbs-view-image-mode
 779   fundamental-mode "image-view-mode")
 780
 781 ;;;###autoload
 782 (defun thumbs-dired-setroot ()
 783   "In dired, Call the setroot program on the image at point."
 784   (interactive)
 785   (thumbs-call-setroot-command (dired-get-filename)))
 786
 787 ;; Modif to dired mode map
 788 (define-key dired-mode-map "\C-ta" 'thumbs-dired-show-all)
 789 (define-key dired-mode-map "\C-tm" 'thumbs-dired-show-marked)
 790 (define-key dired-mode-map "\C-tw" 'thumbs-dired-setroot)
 791
 792 (provide 'thumbs)
 793
 794 ;;; thumbs.el ends here
 795
 796
 797 ;;; arch-tag: f9ac1ef8-83fc-42c0-8069-1fae43fd2e5c