image-dired.el 101 KB
Newer Older
1 2
;;; image-dired.el --- use dired to browse and manipulate your images
;;
3
;; Copyright (C) 2005-2011 Free Software Foundation, Inc.
4 5 6 7 8 9 10
;;
;; Version: 0.4.11
;; Keywords: multimedia
;; Author: Mathias Dahl <mathias.rem0veth1s.dahl@gmail.com>

;; This file is part of GNU Emacs.

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 14
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
15 16 17 18 19 20 21

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; 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 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159

;;; Commentary:
;;
;; BACKGROUND
;; ==========
;;
;;  I needed a program to browse, organize and tag my pictures.  I got
;; tired of the old gallery program I used as it did not allow
;; multi-file operations easily.  Also, it put things out of my
;; control.  Image viewing programs I tested did not allow multi-file
;; operations or did not do what I wanted it to.
;;
;;  So, I got the idea to use the wonderful functionality of Emacs and
;; `dired' to do it.  It would allow me to do almost anything I wanted,
;; which is basically just to browse all my pictures in an easy way,
;; letting me manipulate and tag them in various ways.  `dired' already
;; provide all the file handling and navigation facilities; I only
;; needed to add some functions to display the images.
;;
;;  I briefly tried out thumbs.el, and although it seemed more
;; powerful than this package, it did not work the way I wanted to.  It
;; was too slow to created thumbnails of all files in a directory (I
;; currently keep all my 2000+ images in the same directory) and
;; browsing the thumbnail buffer was slow too.  image-dired.el will not
;; create thumbnails until they are needed and the browsing is done
;; quickly and easily in dired.  I copied a great deal of ideas and
;; code from there though... :)
;;
;;  `image-dired' stores the thumbnail files in `image-dired-dir'
;; using the file name format ORIGNAME.thumb.ORIGEXT.  For example
;; ~/.emacs.d/image-dired/myimage01.thumb.jpg.  The "database" is for
;; now just a plain text file with the following format:
;;
;; file-name-non-directory;comment:comment-text;tag1;tag2;tag3;...;tagN
;;
;;
;; PREREQUISITES
;; =============
;;
;; * The ImageMagick package.  Currently, `convert' and `mogrify' are
;; used.  Find it here: http://www.imagemagick.org.
;;
;; * For non-lossy rotation of JPEG images, the JpegTRAN program is
;; needed.
;;
;; * For `image-dired-get-exif-data' and `image-dired-write-exif-data' to work,
;; the command line tool `exiftool' is needed.  It can be found here:
;; http://www.sno.phy.queensu.ca/~phil/exiftool/.  These two functions
;; are, among other things, used for writing comments to image files
;; using `image-dired-thumbnail-set-image-description' and to create
;; "unique" file names using `image-dired-get-exif-file-name' (used by
;; `image-dired-copy-with-exif-file-name').
;;
;;
;; USAGE
;; =====
;;
;; This information has been moved to the manual.  Type `C-h r' to open
;; the Emacs manual and go to the node Thumbnails by typing `g
;; Thumbnails RET'.
;;
;; Quickstart: M-x image-dired RET DIRNAME RET
;;
;; where DIRNAME is a directory containing image files.
;;
;; LIMITATIONS
;; ===========
;;
;; * Supports all image formats that Emacs and convert supports, but
;; the thumbnails are hard-coded to JPEG format.
;;
;; * WARNING: The "database" format used might be changed so keep a
;; backup of `image-dired-db-file' when testing new versions.
;;
;;
;; TODO
;; ====
;;
;; * Support gallery creation when using per-directory thumbnail
;; storage.
;;
;; * Some sort of auto-rotate function based on rotate info in the
;; EXIF data.
;;
;; * Check if exiftool exist before trying to call it to give a better
;; error message.
;;
;; * Investigate if it is possible to also write the tags to the image
;; files.
;;
;; * From thumbs.el: Add an option for clean-up/max-size functionality
;;   for thumbnail directory.
;;
;; * From thumbs.el: Add setroot function.
;;
;; * From thumbs.el: Add image resizing, if useful (image-dired's automatic
;;  "image fit" might be enough)
;;
;; * From thumbs.el: Add the "modify" commands (emboss, negate,
;;   monochrome etc).
;;
;; * Asynchronous creation of thumbnails.
;;
;; * Add `image-dired-display-thumbs-ring' and functions to cycle that.  Find
;; out which is best, saving old batch just before inserting new, or
;; saving the current batch in the ring when inserting it.  Adding it
;; probably needs rewriting `image-dired-display-thumbs' to be more general.
;;
;; * Find some way of toggling on and off really nice keybindings in
;; dired (for example, using C-n or <down> instead of C-S-n).  Richard
;; suggested that we could keep C-t as prefix for image-dired commands
;; as it is currently not used in dired.  He also suggested that
;; `dired-next-line' and `dired-previous-line' figure out if
;; image-dired is enabled in the current buffer and, if it is, call
;; `image-dired-dired-next-line' and
;; `image-dired-dired-previous-line', respectively.  Update: This is
;; partly done; some bindings have now been added to dired.
;;
;; * Enhanced gallery creation with basic CSS-support and pagination
;; of tag pages with many pictures.
;;
;; * Rewrite `image-dired-modify-mark-on-thumb-original-file' to be
;; less ugly.
;;
;; * In some way keep track of buffers and windows and stuff so that
;; it works as the user expects.
;;
;; * More/better documentation
;;
;;
;;; Code:

(require 'dired)
(require 'format-spec)
(require 'widget)

(eval-when-compile
160
  (require 'cl)
161 162 163 164 165 166 167
  (require 'wid-edit))

(defgroup image-dired nil
  "Use dired to browse your images as thumbnails, and more."
  :prefix "image-dired-"
  :group 'multimedia)

168
(defcustom image-dired-dir (locate-user-emacs-file "image-dired/")
169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188
  "Directory where thumbnail images are stored."
  :type 'string
  :group 'image-dired)

(defcustom image-dired-thumbnail-storage 'use-image-dired-dir
  "How to store image-dired's thumbnail files.
Image-Dired can store thumbnail files in one of two ways and this is
controlled by this variable.  \"Use image-dired dir\" means that the
thumbnails are stored in a central directory.  \"Per directory\"
means that each thumbnail is stored in a subdirectory called
\".image-dired\" in the same directory where the image file is.
\"Thumbnail Managing Standard\" means that the thumbnails are
stored and generated according to the Thumbnail Managing Standard
that allows sharing of thumbnails across different programs."
  :type '(choice :tag "How to store thumbnail files"
                 (const :tag "Thumbnail Managing Standard" standard)
                 (const :tag "Use image-dired-dir" use-image-dired-dir)
                 (const :tag "Per-directory" per-directory))
  :group 'image-dired)

189
(defcustom image-dired-db-file
190
  (expand-file-name ".image-dired_db" image-dired-dir)
191 192 193 194
  "Database file where file names and their associated tags are stored."
  :type 'string
  :group 'image-dired)

195
(defcustom image-dired-temp-image-file
196
  (expand-file-name ".image-dired_temp" image-dired-dir)
197 198 199 200
  "Name of temporary image file used by various commands."
  :type 'string
  :group 'image-dired)

201
(defcustom image-dired-gallery-dir
202
  (expand-file-name ".image-dired_gallery" image-dired-dir)
203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232
  "Directory to store generated gallery html pages.
This path needs to be \"shared\" to the public so that it can access
the index.html page that image-dired creates."
  :type 'string
  :group 'image-dired)

(defcustom image-dired-gallery-image-root-url
"http://your.own.server/image-diredpics"
  "URL where the full size images are to be found.
Note that this path has to be configured in your web server.  Image-Dired
expects to find pictures in this directory."
  :type 'string
  :group 'image-dired)

(defcustom image-dired-gallery-thumb-image-root-url
"http://your.own.server/image-diredthumbs"
  "URL where the thumbnail images are to be found.
Note that this path has to be configured in your web server.  Image-Dired
expects to find pictures in this directory."
  :type 'string
  :group 'image-dired)

(defcustom image-dired-cmd-create-thumbnail-program
  "convert"
  "Executable used to create thumbnail.
Used together with `image-dired-cmd-create-thumbnail-options'."
  :type 'string
  :group 'image-dired)

(defcustom image-dired-cmd-create-thumbnail-options
233
  "%p -size %wx%h \"%f\" -resize \"%wx%h>\" -strip jpeg:\"%t\""
234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250
  "Format of command used to create thumbnail image.
Available options are %p which is replaced by
`image-dired-cmd-create-thumbnail-program', %w which is replaced by
`image-dired-thumb-width', %h which is replaced by `image-dired-thumb-height',
%f which is replaced by the file name of the original image and %t
which is replaced by the file name of the thumbnail file."
  :type 'string
  :group 'image-dired)

(defcustom image-dired-cmd-create-temp-image-program
  "convert"
  "Executable used to create temporary image.
Used together with `image-dired-cmd-create-temp-image-options'."
  :type 'string
  :group 'image-dired)

(defcustom image-dired-cmd-create-temp-image-options
251
  "%p -size %wx%h \"%f\" -resize \"%wx%h>\" -strip jpeg:\"%t\""
252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283
  "Format of command used to create temporary image for display window.
Available options are %p which is replaced by
`image-dired-cmd-create-temp-image-program', %w and %h which is replaced by
the calculated max size for width and height in the image display window,
%f which is replaced by the file name of the original image and %t which
is replaced by the file name of the temporary file."
  :type 'string
  :group 'image-dired)

(defcustom image-dired-cmd-pngnq-program (executable-find "pngnq")
  "The file name of the `pngnq' program.
It quantizes colors of PNG images down to 256 colors."
  :type '(choice (const :tag "Not Set" nil) string)
  :group 'image-dired)

(defcustom image-dired-cmd-pngcrush-program (executable-find "pngcrush")
  "The file name of the `pngcrush' program.
It optimizes the compression of PNG images.  Also it adds PNG textual chunks
with the information required by the Thumbnail Managing Standard."
  :type '(choice (const :tag "Not Set" nil) string)
  :group 'image-dired)

(defcustom image-dired-cmd-create-standard-thumbnail-command
  (concat
   image-dired-cmd-create-thumbnail-program " "
   "-size %wx%h \"%f\" "
   (unless (or image-dired-cmd-pngcrush-program image-dired-cmd-pngnq-program)
     (concat
      "-set \"Thumb::MTime\" \"%m\" "
      "-set \"Thumb::URI\" \"file://%f\" "
      "-set \"Description\" \"Thumbnail of file://%f\" "
      "-set \"Software\" \"" (emacs-version) "\" "))
284
   "-thumbnail \"%wx%h>\" png:\"%t\""
285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346
   (if image-dired-cmd-pngnq-program
       (concat
        " ; " image-dired-cmd-pngnq-program " -f \"%t\""
        (unless image-dired-cmd-pngcrush-program
          " ; mv %q %t")))
   (if image-dired-cmd-pngcrush-program
       (concat
        (unless image-dired-cmd-pngcrush-program
          " ; cp %t %q")
        " ; " image-dired-cmd-pngcrush-program " -q "
        "-text b \"Description\" \"Thumbnail of file://%f\" "
        "-text b \"Software\" \"" (emacs-version) "\" "
        ;; "-text b \"Thumb::Image::Height\" \"%oh\" "
        ;; "-text b \"Thumb::Image::Mimetype\" \"%mime\" "
        ;; "-text b \"Thumb::Image::Width\" \"%ow\" "
        "-text b \"Thumb::MTime\" \"%m\" "
        ;; "-text b \"Thumb::Size\" \"%b\" "
        "-text b \"Thumb::URI\" \"file://%f\" "
        "%q %t"
        " ; rm %q")))
  "Command to create thumbnails according to the Thumbnail Managing Standard."
  :type 'string
  :group 'image-dired)

(defcustom image-dired-cmd-rotate-thumbnail-program
  "mogrify"
  "Executable used to rotate thumbnail.
Used together with `image-dired-cmd-rotate-thumbnail-options'."
  :type 'string
  :group 'image-dired)

(defcustom image-dired-cmd-rotate-thumbnail-options
  "%p -rotate %d \"%t\""
  "Format of command used to rotate thumbnail image.
Available options are %p which is replaced by
`image-dired-cmd-rotate-thumbnail-program', %d which is replaced by the
number of (positive) degrees to rotate the image, normally 90 or 270
\(for 90 degrees right and left), %t which is replaced by the file name
of the thumbnail file."
  :type 'string
  :group 'image-dired)

(defcustom image-dired-cmd-rotate-original-program
  "jpegtran"
  "Executable used to rotate original image.
Used together with `image-dired-cmd-rotate-original-options'."
  :type 'string
  :group 'image-dired)

(defcustom image-dired-cmd-rotate-original-options
  "%p -rotate %d -copy all -outfile %t \"%o\""
  "Format of command used to rotate original image.
Available options are %p which is replaced by
`image-dired-cmd-rotate-original-program', %d which is replaced by the
number of (positive) degrees to rotate the image, normally 90 or
270 \(for 90 degrees right and left), %o which is replaced by the
original image file name and %t which is replaced by
`image-dired-temp-image-file'."
  :type 'string
  :group 'image-dired)

(defcustom image-dired-temp-rotate-image-file
347
  (expand-file-name ".image-dired_rotate_temp" image-dired-dir)
348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369
  "Temporary file for rotate operations."
  :type 'string
  :group 'image-dired)

(defcustom image-dired-rotate-original-ask-before-overwrite t
  "Confirm overwrite of original file after rotate operation.
If non-nil, ask user for confirmation before overwriting the
original file with `image-dired-temp-rotate-image-file'."
  :type 'boolean
  :group 'image-dired)

(defcustom image-dired-cmd-write-exif-data-program
  "exiftool"
  "Program used to write EXIF data to image.
Used together with `image-dired-cmd-write-exif-data-options'."
  :type 'string
  :group 'image-dired)

(defcustom image-dired-cmd-write-exif-data-options
  "%p -%t=\"%v\" \"%f\""
  "Format of command used to write EXIF data.
Available options are %p which is replaced by
370 371
`image-dired-cmd-write-exif-data-program', %f which is replaced by
the image file name, %t which is replaced by the tag name and %v
372 373 374 375 376 377 378 379 380 381 382 383 384 385 386
which is replaced by the tag value."
  :type 'string
  :group 'image-dired)

(defcustom image-dired-cmd-read-exif-data-program
  "exiftool"
  "Program used to read EXIF data to image.
Used together with `image-dired-cmd-read-exif-data-program-options'."
  :type 'string
  :group 'image-dired)

(defcustom image-dired-cmd-read-exif-data-options
  "%p -s -s -s -%t \"%f\""
  "Format of command used to read EXIF data.
Available options are %p which is replaced by
387
`image-dired-cmd-write-exif-data-program', %f which is replaced
388 389 390 391 392 393 394 395 396 397 398 399 400
by the image file name and %t which is replaced by the tag name."
  :type 'string
  :group 'image-dired)

(defcustom image-dired-gallery-hidden-tags
  (list "private" "hidden" "pending")
  "List of \"hidden\" tags.
Used by `image-dired-gallery-generate' to leave out \"hidden\" images."
  :type '(repeat string)
  :group 'image-dired)

(defcustom image-dired-thumb-size (if (eq 'standard image-dired-thumbnail-storage) 128 100)
  "Size of thumbnails, in pixels.
401 402
This is the default size for both `image-dired-thumb-width'
and `image-dired-thumb-height'."
403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428
  :type 'integer
  :group 'image-dired)

(defcustom image-dired-thumb-width image-dired-thumb-size
  "Width of thumbnails, in pixels."
  :type 'integer
  :group 'image-dired)

(defcustom image-dired-thumb-height image-dired-thumb-size
  "Height of thumbnails, in pixels."
  :type 'integer
  :group 'image-dired)

(defcustom image-dired-thumb-relief 2
  "Size of button-like border around thumbnails."
  :type 'integer
  :group 'image-dired)

(defcustom image-dired-thumb-margin 2
  "Size of the margin around thumbnails.
This is where you see the cursor."
  :type 'integer
  :group 'image-dired)

(defcustom image-dired-line-up-method 'dynamic
  "Default method for line-up of thumbnails in thumbnail buffer.
429 430 431 432 433
Used by `image-dired-display-thumbs' and other functions that needs
to line-up thumbnails.  Dynamic means to use the available width of
the window containing the thumbnail buffer, Fixed means to use
`image-dired-thumbs-per-row', Interactive is for asking the user,
and No line-up means that no automatic line-up will be done."
434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513
  :type '(choice :tag "Default line-up method"
                 (const :tag "Dynamic" dynamic)
		 (const :tag "Fixed" fixed)
		 (const :tag "Interactive" interactive)
                 (const :tag "No line-up" none))
  :group 'image-dired)

(defcustom image-dired-thumbs-per-row 3
  "Number of thumbnails to display per row in thumb buffer."
  :type 'integer
  :group 'image-dired)

(defcustom image-dired-display-window-width-correction 1
  "Number to be used to correct image display window width.
Change if the default (1) does not work (i.e. if the image does not
completely fit)."
  :type 'integer
  :group 'image-dired)

(defcustom image-dired-display-window-height-correction 0
  "Number to be used to correct image display window height.
Change if the default (0) does not work (i.e. if the image does not
completely fit)."
  :type 'integer
  :group 'image-dired)

(defcustom image-dired-track-movement t
  "The current state of the tracking and mirroring.
For more information, see the documentation for
`image-dired-toggle-movement-tracking'."
  :type 'boolean
  :group 'image-dired)

(defcustom image-dired-append-when-browsing nil
  "Append thumbnails in thumbnail buffer when browsing.
If non-nil, using `image-dired-next-line-and-display' and
`image-dired-previous-line-and-display' will leave a trail of thumbnail
images in the thumbnail buffer.  If you enable this and want to clean
the thumbnail buffer because it is filled with too many thumbmnails,
just call `image-dired-display-thumb' to display only the image at point.
This value can be toggled using `image-dired-toggle-append-browsing'."
  :type 'boolean
  :group 'image-dired)

(defcustom image-dired-dired-disp-props t
  "If non-nil, display properties for dired file when browsing.
Used by `image-dired-next-line-and-display',
`image-dired-previous-line-and-display' and `image-dired-mark-and-display-next'.
If the database file is large, this can slow down image browsing in
dired and you might want to turn it off."
  :type 'boolean
  :group 'image-dired)

(defcustom image-dired-display-properties-format "%b: %f (%t): %c"
  "Display format for thumbnail properties.
%b is replaced with associated dired buffer name, %f with file name
\(without path) of original image file, %t with the list of tags and %c
with the comment."
  :type 'string
  :group 'image-dired)

(defcustom image-dired-external-viewer
  ;; TODO: Use mailcap, dired-guess-shell-alist-default,
  ;; dired-view-command-alist.
  (cond ((executable-find "display"))
        ((executable-find "xli"))
        ((executable-find "qiv") "qiv -t"))
  "Name of external viewer.
Including parameters.  Used when displaying original image from
`image-dired-thumbnail-mode'."
  :type 'string
  :group 'image-dired)

(defcustom image-dired-main-image-directory "~/pics/"
  "Name of main image directory, if any.
Used by `image-dired-copy-with-exif-file-name'."
  :type 'string
  :group 'image-dired)

(defcustom image-dired-show-all-from-dir-max-files 50
514
  "Maximum number of files to show using `image-dired-show-all-from-dir'
515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635
before warning the user."
  :type 'integer
  :group 'image-dired)

(defun image-dired-dir ()
  "Return the current thumbnails directory (from variable `image-dired-dir').
Create the thumbnails directory if it does not exist."
  (let ((image-dired-dir (file-name-as-directory
                    (expand-file-name image-dired-dir))))
    (unless (file-directory-p image-dired-dir)
      (make-directory image-dired-dir t)
      (message "Creating thumbnails directory"))
    image-dired-dir))

(defun image-dired-insert-image (file type relief margin)
  "Insert image FILE of image TYPE, using RELIEF and MARGIN, at point."

  (let ((i `(image :type ,type
                   :file ,file
                   :relief ,relief
                   :margin ,margin)))
    (insert-image i)))

(defun image-dired-get-thumbnail-image (file)
  "Return the image descriptor for a thumbnail of image file FILE."
  (unless (string-match (image-file-name-regexp) file)
    (error "%s is not a valid image file" file))
  (let ((thumb-file (image-dired-thumb-name file)))
    (unless (and (file-exists-p thumb-file)
		 (<= (float-time (nth 5 (file-attributes file)))
		     (float-time (nth 5 (file-attributes thumb-file)))))
      (image-dired-create-thumb file thumb-file))
    (create-image thumb-file)
;;     (list 'image :type 'jpeg
;;           :file thumb-file
;; 	  :relief image-dired-thumb-relief :margin image-dired-thumb-margin)
    ))

(defun image-dired-insert-thumbnail (file original-file-name
                                    associated-dired-buffer)
  "Insert thumbnail image FILE.
Add text properties ORIGINAL-FILE-NAME and ASSOCIATED-DIRED-BUFFER."
  (let (beg end)
    (setq beg (point))
    (image-dired-insert-image file
                        ;; TODO: this should depend on the real file type
                        (if (eq 'standard image-dired-thumbnail-storage)
                            'png 'jpeg)
                        image-dired-thumb-relief
                        image-dired-thumb-margin)
    (setq end (point))
    (add-text-properties
     beg end
     (list 'image-dired-thumbnail t
           'original-file-name original-file-name
           'associated-dired-buffer associated-dired-buffer
           'tags (image-dired-list-tags original-file-name)
           'mouse-face 'highlight
           'comment (image-dired-get-comment original-file-name)))))

(defun image-dired-thumb-name (file)
  "Return thumbnail file name for FILE.
Depending on the value of `image-dired-thumbnail-storage', the file
name will vary.  For central thumbnail file storage, make a
MD5-hash of the image file's directory name and add that to make
the thumbnail file name unique.  For per-directory storage, just
add a subdirectory.  For standard storage, produce the file name
according to the Thumbnail Managing Standard."
  (cond ((eq 'standard image-dired-thumbnail-storage)
         (expand-file-name
          (concat "~/.thumbnails/normal/"
                  (md5 (concat "file://" (expand-file-name file))) ".png")))
        ((eq 'use-image-dired-dir image-dired-thumbnail-storage)
         (let* ((f (expand-file-name file))
                (md5-hash
                 ;; Is MD5 hashes fast enough? The checksum of a
                 ;; thumbnail file name need not be that
                 ;; "cryptographically" good so a faster one could
                 ;; be used here.
                 (md5 (file-name-as-directory (file-name-directory f)))))
           (format "%s%s%s.thumb.%s"
                   (file-name-as-directory (expand-file-name (image-dired-dir)))
                   (file-name-sans-extension (file-name-nondirectory f))
                   (if md5-hash (concat "_" md5-hash) "")
                   (file-name-extension f))))
        ((eq 'per-directory image-dired-thumbnail-storage)
         (let ((f (expand-file-name file)))
           (format "%s.image-dired/%s.thumb.%s"
                   (file-name-directory f)
                   (file-name-sans-extension (file-name-nondirectory f))
                   (file-name-extension f))))))

(defun image-dired-create-thumb (original-file thumbnail-file)
  "For ORIGINAL-FILE, create thumbnail image named THUMBNAIL-FILE."
  (let* ((width (int-to-string image-dired-thumb-width))
         (height (int-to-string image-dired-thumb-height))
         (modif-time (format "%.0f" (float-time (nth 5 (file-attributes
                                                        original-file)))))
         (thumbnail-nq8-file (replace-regexp-in-string ".png\\'" "-nq8.png"
                                                       thumbnail-file))
         (command
          (format-spec
           (if (eq 'standard image-dired-thumbnail-storage)
               image-dired-cmd-create-standard-thumbnail-command
             image-dired-cmd-create-thumbnail-options)
           (list
            (cons ?p image-dired-cmd-create-thumbnail-program)
            (cons ?w width)
            (cons ?h height)
            (cons ?m modif-time)
            (cons ?f original-file)
            (cons ?q thumbnail-nq8-file)
            (cons ?t thumbnail-file))))
         thumbnail-dir)
    (when (not (file-exists-p
                (setq thumbnail-dir (file-name-directory thumbnail-file))))
      (message "Creating thumbnail directory.")
      (make-directory thumbnail-dir))
    (call-process shell-file-name nil nil nil shell-command-switch command)))

;;;###autoload
636 637 638 639 640 641 642
(defun image-dired-dired-toggle-marked-thumbs (&optional arg)
  "Toggle thumbnails in front of file names in the dired buffer.
If no marked file could be found, insert or hide thumbnails on the
current line.  ARG, if non-nil, specifies the files to use instead
of the marked files.  If ARG is an integer, use the next ARG (or
previous -ARG, if ARG<0) files."
  (interactive "P")
643
  (dired-map-over-marks
644
   (let* ((image-pos  (dired-move-to-filename))
645
          (image-file (dired-get-filename nil t))
646
          thumb-file
647
          overlay)
648 649 650 651 652 653 654 655 656 657 658 659 660 661
     (when (and image-file (string-match-p (image-file-name-regexp) image-file))
       (setq thumb-file (image-dired-get-thumbnail-image image-file))
       ;; If image is not already added, then add it.
       (let ((cur-ov (overlays-in (point) (1+ (point)))))
         (if cur-ov
             (delete-overlay (car cur-ov))
	   (put-image thumb-file image-pos)
	   (setq overlay (loop for o in (overlays-in (point) (1+ (point)))
			       when (overlay-get o 'put-image) collect o into ov
			       finally return (car ov)))
	   (overlay-put overlay 'image-file image-file)
	   (overlay-put overlay 'thumb-file thumb-file)))))
   arg             ; Show or hide image on ARG next files.
   'show-progress) ; Update dired display after each image is updated.
662 663 664 665
  (add-hook 'dired-after-readin-hook 'image-dired-dired-after-readin-hook nil t))

(defun image-dired-dired-after-readin-hook ()
  "Relocate existing thumbnail overlays in dired buffer after reverting.
666
Move them to their corresponding files if they still exist.
667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810
Otherwise, delete overlays."
  (mapc (lambda (overlay)
          (when (overlay-get overlay 'put-image)
            (let* ((image-file (overlay-get overlay 'image-file))
                   (image-pos (dired-goto-file image-file)))
              (if image-pos
                  (move-overlay overlay image-pos image-pos)
                (delete-overlay overlay)))))
        (overlays-in (point-min) (point-max))))

(defun image-dired-next-line-and-display ()
  "Move to next dired line and display thumbnail image."
  (interactive)
  (dired-next-line 1)
  (image-dired-display-thumbs
   t (or image-dired-append-when-browsing nil) t)
  (if image-dired-dired-disp-props
      (image-dired-dired-display-properties)))

(defun image-dired-previous-line-and-display ()
  "Move to previous dired line and display thumbnail image."
  (interactive)
  (dired-previous-line 1)
  (image-dired-display-thumbs
   t (or image-dired-append-when-browsing nil) t)
  (if image-dired-dired-disp-props
      (image-dired-dired-display-properties)))

(defun image-dired-toggle-append-browsing ()
  "Toggle `image-dired-append-when-browsing'."
  (interactive)
  (setq image-dired-append-when-browsing
        (not image-dired-append-when-browsing))
  (message "Append browsing %s."
           (if image-dired-append-when-browsing
               "on"
             "off")))

(defun image-dired-mark-and-display-next ()
  "Mark current file in dired and display next thumbnail image."
  (interactive)
  (dired-mark 1)
  (image-dired-display-thumbs
   t (or image-dired-append-when-browsing nil) t)
  (if image-dired-dired-disp-props
      (image-dired-dired-display-properties)))

(defun image-dired-toggle-dired-display-properties ()
  "Toggle `image-dired-dired-disp-props'."
  (interactive)
  (setq image-dired-dired-disp-props
        (not image-dired-dired-disp-props))
  (message "Dired display properties %s."
           (if image-dired-dired-disp-props
               "on"
             "off")))

(defvar image-dired-thumbnail-buffer "*image-dired*"
  "Image-Dired's thumbnail buffer.")

(defun image-dired-create-thumbnail-buffer ()
  "Create thumb buffer and set `image-dired-thumbnail-mode'."
  (let ((buf (get-buffer-create image-dired-thumbnail-buffer)))
    (with-current-buffer buf
      (setq buffer-read-only t)
      (if (not (eq major-mode 'image-dired-thumbnail-mode))
          (image-dired-thumbnail-mode)))
    buf))

(defvar image-dired-display-image-buffer "*image-dired-display-image*"
  "Where larger versions of the images are display.")

(defun image-dired-create-display-image-buffer ()
  "Create image display buffer and set `image-dired-display-image-mode'."
  (let ((buf (get-buffer-create image-dired-display-image-buffer)))
    (with-current-buffer buf
      (setq buffer-read-only t)
      (if (not (eq major-mode 'image-dired-display-image-mode))
          (image-dired-display-image-mode)))
    buf))

(defvar image-dired-saved-window-configuration nil
  "Saved window configuration.")

;;;###autoload
(defun image-dired-dired-with-window-configuration (dir &optional arg)
  "Open directory DIR and create a default window configuration.

Convenience command that:

 - Opens dired in folder DIR
 - Splits windows in most useful (?) way
 - Set `truncate-lines' to t

After the command has finished, you would typically mark some
image files in dired and type
\\[image-dired-display-thumbs] (`image-dired-display-thumbs').

If called with prefix argument ARG, skip splitting of windows.

The current window configuration is saved and can be restored by
calling `image-dired-restore-window-configuration'."
  (interactive "DDirectory: \nP")
  (let ((buf (image-dired-create-thumbnail-buffer))
        (buf2 (image-dired-create-display-image-buffer)))
    (setq image-dired-saved-window-configuration
          (current-window-configuration))
    (dired dir)
    (delete-other-windows)
    (when (not arg)
      (split-window-horizontally)
      (setq truncate-lines t)
      (save-excursion
        (other-window 1)
        (switch-to-buffer buf)
        (split-window-vertically)
        (other-window 1)
        (switch-to-buffer buf2)
        (other-window -2)))))

(defun image-dired-restore-window-configuration ()
  "Restore window configuration.
Restore any changes to the window configuration made by calling
`image-dired-dired-with-window-configuration'."
  (interactive)
  (if image-dired-saved-window-configuration
      (set-window-configuration image-dired-saved-window-configuration)
    (message "No saved window configuration")))

;;;###autoload
(defun image-dired-display-thumbs (&optional arg append do-not-pop)
  "Display thumbnails of all marked files, in `image-dired-thumbnail-buffer'.
If a thumbnail image does not exist for a file, it is created on the
fly.  With prefix argument ARG, display only thumbnail for file at
point (this is useful if you have marked some files but want to show
another one).

Recommended usage is to split the current frame horizontally so that
you have the dired buffer in the left window and the
`image-dired-thumbnail-buffer' buffer in the right window.

With optional argument APPEND, append thumbnail to thumbnail buffer
instead of erasing it first.

Juanma Barranquero's avatar
Juanma Barranquero committed
811
Optional argument DO-NOT-POP controls if `pop-to-buffer' should be
812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828
used or not.  If non-nil, use `display-buffer' instead of
`pop-to-buffer'.  This is used from functions like
`image-dired-next-line-and-display' and
`image-dired-previous-line-and-display' where we do not want the
thumbnail buffer to be selected."
  (interactive "P")
  (let ((buf (image-dired-create-thumbnail-buffer))
        curr-file thumb-name files count dired-buf beg)
    (if arg
        (setq files (list (dired-get-filename)))
      (setq files (dired-get-marked-files)))
    (setq dired-buf (current-buffer))
    (with-current-buffer buf
      (let ((inhibit-read-only t))
        (if (not append)
            (erase-buffer)
          (goto-char (point-max)))
829
        (mapc
830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877
         (lambda (curr-file)
           (setq thumb-name (image-dired-thumb-name curr-file))
           (if (and (not (file-exists-p thumb-name))
                    (not (= 0 (image-dired-create-thumb curr-file thumb-name))))
               (message "Thumb could not be created for file %s" curr-file)
             (image-dired-insert-thumbnail thumb-name curr-file dired-buf)))
         files))
      (cond ((eq 'dynamic image-dired-line-up-method)
             (image-dired-line-up-dynamic))
            ((eq 'fixed image-dired-line-up-method)
             (image-dired-line-up))
            ((eq 'interactive image-dired-line-up-method)
             (image-dired-line-up-interactive))
            ((eq 'none image-dired-line-up-method)
             nil)
            (t
             (image-dired-line-up-dynamic))))
    (if do-not-pop
        (display-buffer image-dired-thumbnail-buffer)
      (pop-to-buffer image-dired-thumbnail-buffer))))

;;;###autoload
(defun image-dired-show-all-from-dir (dir)
  "Make a preview buffer for all images in DIR and display it.
If the number of files in DIR matching `image-file-name-regexp'
exceeds `image-dired-show-all-from-dir-max-files', a warning will be
displayed."
  (interactive "DDir: ")
  (dired dir)
  (dired-mark-files-regexp (image-file-name-regexp))
  (let ((files (dired-get-marked-files)))
    (if (or (<= (length files) image-dired-show-all-from-dir-max-files)
            (and (> (length files) image-dired-show-all-from-dir-max-files)
                 (y-or-n-p
                  (format
                   "Directory contains more than %d image files.  Proceed? "
                   image-dired-show-all-from-dir-max-files))))
        (progn
          (image-dired-display-thumbs)
          (pop-to-buffer image-dired-thumbnail-buffer))
      (message "Cancelled."))))

;;;###autoload
(defalias 'image-dired 'image-dired-show-all-from-dir)

;;;###autoload
(defalias 'tumme 'image-dired-show-all-from-dir)

878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893
(defun image-dired-sane-db-file ()
  "Check if `image-dired-db-file' exists.
If not, try to create it (including any parent directories).
Signal error if there are problems creating it."
  (or (file-exists-p image-dired-db-file)
      (let (dir buf)
        (unless (file-directory-p (setq dir (file-name-directory
                                             image-dired-db-file)))
          (make-directory dir t))
        (with-current-buffer (setq buf (create-file-buffer
                                        image-dired-db-file))
          (write-file image-dired-db-file))
        (kill-buffer buf)
        (file-exists-p image-dired-db-file))
      (error "Could not create %s" image-dired-db-file)))

894 895
(defun image-dired-write-tags (file-tags)
  "Write file tags to database.
896 897
Write each file and tag in FILE-TAGS to the database.
FILE-TAGS is an alist in the following form:
898
 ((FILE . TAG) ... )"
899
  (image-dired-sane-db-file)
900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918
  (let (end file tag)
    (with-temp-file image-dired-db-file
      (insert-file-contents image-dired-db-file)
      (dolist (elt file-tags)
	(setq file (car elt)
	      tag (cdr elt))
	(goto-char (point-min))
	(if (search-forward-regexp (format "^%s.*$" file) nil t)
	    (progn
	      (setq end (point))
	      (beginning-of-line)
	      (when (not (search-forward (format ";%s" tag) end t))
		(end-of-line)
		(insert (format ";%s" tag))))
	  (goto-char (point-max))
	  (insert (format "\n%s;%s" file tag)))))))

(defun image-dired-remove-tag (files tag)
  "For all FILES, remove TAG from the image database."
919
  (image-dired-sane-db-file)
920 921 922 923 924 925 926
  (save-excursion
    (let (end buf start)
      (setq buf (find-file image-dired-db-file))
      (if (not (listp files))
          (if (stringp files)
              (setq files (list files))
            (error "Files must be a string or a list of strings!")))
927
      (mapc
928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946
       (lambda (file)
         (goto-char (point-min))
         (when (search-forward-regexp
                (format "^%s" file) nil t)
           (end-of-line)
           (setq end (point))
           (beginning-of-line)
           (when (search-forward-regexp (format "\\(;%s\\)" tag) end t)
             (delete-region (match-beginning 1) (match-end 1))
             ;; Check if file should still be in the database. If
             ;; it has no tags or comments, it will be removed.
             (end-of-line)
             (setq end (point))
             (beginning-of-line)
             (when (not (search-forward ";" end t))
               (kill-line 1)
               ;; If on empty line at end of buffer
               (when (and (eobp)
                          (looking-at "^$"))
947
                 (delete-char -1))))))
948 949 950 951 952 953
       files)
      (save-buffer)
      (kill-buffer buf))))

(defun image-dired-list-tags (file)
  "Read all tags for image FILE from the image database."
954
  (image-dired-sane-db-file)
955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031
  (save-excursion
    (let (end buf (tags ""))
      (setq buf (find-file image-dired-db-file))
      (goto-char (point-min))
      (when (search-forward-regexp
             (format "^%s" file) nil t)
        (end-of-line)
        (setq end (point))
        (beginning-of-line)
        (if (search-forward ";" end t)
            (if (search-forward "comment:" end t)
                (if (search-forward ";" end t)
                    (setq tags (buffer-substring (point) end)))
              (setq tags (buffer-substring (point) end)))))
      (kill-buffer buf)
      (split-string tags ";"))))

;;;###autoload
(defun image-dired-tag-files (arg)
  "Tag marked file(s) in dired.  With prefix ARG, tag file at point."
  (interactive "P")
  (let ((tag (read-string "Tags to add (separate tags with a semicolon): "))
        curr-file files)
    (if arg
        (setq files (list (dired-get-filename)))
      (setq files (dired-get-marked-files)))
    (image-dired-write-tags
     (mapcar
      (lambda (x)
        (cons x tag))
      files))))

(defun image-dired-tag-thumbnail ()
  "Tag current thumbnail."
  (interactive)
  (let ((tag (read-string "Tags to add (separate tags with a semicolon): ")))
    (image-dired-write-tags (list (cons (image-dired-original-file-name) tag))))
  (image-dired-update-property
   'tags (image-dired-list-tags (image-dired-original-file-name))))

;;;###autoload
(defun image-dired-delete-tag (arg)
  "Remove tag for selected file(s).
With prefix argument ARG, remove tag from file at point."
  (interactive "P")
  (let ((tag (read-string "Tag to remove: "))
        files)
    (if arg
        (setq files (list (dired-get-filename)))
      (setq files (dired-get-marked-files)))
    (image-dired-remove-tag files tag)))

(defun image-dired-tag-thumbnail-remove ()
  "Remove tag from thumbnail."
  (interactive)
  (let ((tag (read-string "Tag to remove: ")))
    (image-dired-remove-tag (image-dired-original-file-name) tag))
  (image-dired-update-property
   'tags (image-dired-list-tags (image-dired-original-file-name))))

(defun image-dired-original-file-name ()
  "Get original file name for thumbnail or display image at point."
  (get-text-property (point) 'original-file-name))

(defun image-dired-associated-dired-buffer ()
  "Get associated dired buffer at point."
  (get-text-property (point) 'associated-dired-buffer))

(defun image-dired-get-buffer-window (buf)
  "Return window where buffer BUF is."
  (get-window-with-predicate
   (lambda (window)
     (equal (window-buffer window) buf))
   nil t))

(defun image-dired-track-original-file ()
  "Track the original file in the associated dired buffer.
1032 1033
See documentation for `image-dired-toggle-movement-tracking'.
Interactive use only useful if `image-dired-track-movement' is nil."
1034 1035 1036 1037 1038 1039
  (interactive)
  (let ((old-buf (current-buffer))
        (dired-buf (image-dired-associated-dired-buffer))
        (file-name (image-dired-original-file-name)))
    (when (and (buffer-live-p dired-buf) file-name)
      (set-buffer dired-buf)
1040
      (if (not (dired-goto-file file-name))
1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057
          (message "Could not track file")
        (set-window-point
         (image-dired-get-buffer-window dired-buf) (point)))
      (set-buffer old-buf))))

(defun image-dired-toggle-movement-tracking ()
  "Turn on and off `image-dired-track-movement'.
Tracking of the movements between thumbnail and dired buffer so that
they are \"mirrored\" in the dired buffer.  When this is on, moving
around in the thumbnail or dired buffer will find the matching
position in the other buffer."
  (interactive)
  (setq image-dired-track-movement (not image-dired-track-movement))
  (message "Tracking %s" (if image-dired-track-movement "on" "off")))

(defun image-dired-track-thumbnail ()
  "Track current dired file's thumb in `image-dired-thumbnail-buffer'.
1058 1059
This is almost the same as what `image-dired-track-original-file' does,
but the other way around."
1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081
  (let ((file (dired-get-filename))
        (old-buf (current-buffer))
        prop-val found)
    (when (get-buffer image-dired-thumbnail-buffer)
      (set-buffer image-dired-thumbnail-buffer)
      (goto-char (point-min))
      (while (and (not (eobp))
                  (not found))
        (if (and (setq prop-val
                       (get-text-property (point) 'original-file-name))
                 (string= prop-val file))
            (setq found t))
        (if (not found)
            (forward-char 1)))
      (when found
        (set-window-point
         (image-dired-thumbnail-window) (point))
        (image-dired-display-thumb-properties))
      (set-buffer old-buf))))

(defun image-dired-dired-next-line (&optional arg)
  "Call `dired-next-line', then track thumbnail.
1082 1083
This can safely replace `dired-next-line'.
With prefix argument, move ARG lines."
1084 1085 1086 1087 1088 1089 1090
  (interactive "P")
  (dired-next-line (or arg 1))
  (if image-dired-track-movement
      (image-dired-track-thumbnail)))

(defun image-dired-dired-previous-line (&optional arg)
  "Call `dired-previous-line', then track thumbnail.
1091 1092
This can safely replace `dired-previous-line'.
With prefix argument, move ARG lines."
1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142
  (interactive "P")
  (dired-previous-line (or arg 1))
  (if image-dired-track-movement
      (image-dired-track-thumbnail)))

(defun image-dired-forward-image (&optional arg)
  "Move to next image and display properties.
Optional prefix ARG says how many images to move; default is one
image."
  (interactive "p")
  (let (pos (steps (or arg 1)))
    (dotimes (i steps)
      (if (and (not (eobp))
               (save-excursion
                 (forward-char)
                 (while (and (not (eobp))
                             (not (image-dired-image-at-point-p)))
                   (forward-char))
                 (setq pos (point))
                 (image-dired-image-at-point-p)))
          (goto-char pos)
        (error "At last image"))))
  (when image-dired-track-movement
    (image-dired-track-original-file))
  (image-dired-display-thumb-properties))

(defun image-dired-backward-image (&optional arg)
  "Move to previous image and display properties.
Optional prefix ARG says how many images to move; default is one
image."
  (interactive "p")
  (let (pos (steps (or arg 1)))
    (dotimes (i steps)
      (if (and (not (bobp))
               (save-excursion
                 (backward-char)
                 (while (and (not (bobp))
                             (not (image-dired-image-at-point-p)))
                   (backward-char))
                 (setq pos (point))
                 (image-dired-image-at-point-p)))
          (goto-char pos)
        (error "At first image"))))
  (when image-dired-track-movement
    (image-dired-track-original-file))
  (image-dired-display-thumb-properties))

(defun image-dired-next-line ()
  "Move to next line and display properties."
  (interactive)
1143
  (forward-line 1)
1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154
  ;; If we end up in an empty spot, back up to the next thumbnail.
  (if (not (image-dired-image-at-point-p))
      (image-dired-backward-image))
  (if image-dired-track-movement
      (image-dired-track-original-file))
  (image-dired-display-thumb-properties))


(defun image-dired-previous-line ()
  "Move to previous line and display properties."
  (interactive)
1155
  (forward-line -1)
1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168
  ;; If we end up in an empty spot, back up to the next
  ;; thumbnail. This should only happen if the user deleted a
  ;; thumbnail and did not refresh, so it is not very common. But we
  ;; can handle it in a good manner, so why not?
  (if (not (image-dired-image-at-point-p))
      (image-dired-backward-image))
  (if image-dired-track-movement
      (image-dired-track-original-file))
  (image-dired-display-thumb-properties))

(defun image-dired-format-properties-string (buf file props comment)
  "Format display properties.
BUF is the associated dired buffer, FILE is the original image file
1169
name, PROPS is a list of tags and COMMENT is the image file's
1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189
comment."
  (format-spec
   image-dired-display-properties-format
   (list
    (cons ?b (or buf ""))
    (cons ?f file)
    (cons ?t (or (princ props) ""))
    (cons ?c (or comment "")))))

(defun image-dired-display-thumb-properties ()
  "Display thumbnail properties in the echo area."
  (if (not (eobp))
      (let ((file-name (file-name-nondirectory (image-dired-original-file-name)))
            (dired-buf (buffer-name (image-dired-associated-dired-buffer)))
            (props (mapconcat
                    'princ
                    (get-text-property (point) 'tags)
                    ", "))
            (comment (get-text-property (point) 'comment)))
        (if file-name
1190
             (message "%s"
1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204
             (image-dired-format-properties-string
              dired-buf
              file-name
              props
              comment))))))

(defun image-dired-dired-file-marked-p ()
  "Check whether file on current line is marked or not."
  (save-excursion
    (beginning-of-line)
    (not (looking-at "^ .*$"))))

(defun image-dired-modify-mark-on-thumb-original-file (command)
  "Modify mark in dired buffer.
1205
COMMAND is one of 'mark for marking file in dired, 'unmark for
1206 1207 1208 1209 1210 1211 1212
unmarking file in dired or 'flag for flagging file for delete in
dired."
  (let ((file-name (image-dired-original-file-name))
        (dired-buf (image-dired-associated-dired-buffer)))
    (if (not (and dired-buf file-name))
        (message "No image, or image with correct properties, at point.")
    (with-current-buffer dired-buf
1213
        (message "%s" file-name)
1214
        (if (dired-goto-file file-name)
1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593
            (cond ((eq command 'mark) (dired-mark 1))
                  ((eq command 'unmark) (dired-unmark 1))
                  ((eq command 'toggle)
                   (if (image-dired-dired-file-marked-p)
                       (dired-unmark 1)
                     (dired-mark 1)))
                  ((eq command 'flag) (dired-flag-file-deletion 1))))))))

(defun image-dired-mark-thumb-original-file ()
  "Mark original image file in associated dired buffer."
  (interactive)
  (image-dired-modify-mark-on-thumb-original-file 'mark)
  (image-dired-forward-image))

(defun image-dired-unmark-thumb-original-file ()
  "Unmark original image file in associated dired buffer."
  (interactive)
  (image-dired-modify-mark-on-thumb-original-file 'unmark)
  (image-dired-forward-image))

(defun image-dired-flag-thumb-original-file ()
  "Flag original image file for deletion in associated dired buffer."
  (interactive)
  (image-dired-modify-mark-on-thumb-original-file 'flag)
  (image-dired-forward-image))

(defun image-dired-toggle-mark-thumb-original-file ()
  "Toggle mark on original image file in associated dired buffer."
  (interactive)
  (image-dired-modify-mark-on-thumb-original-file 'toggle))

(defun image-dired-jump-original-dired-buffer ()
  "Jump to the dired buffer associated with the current image file.
You probably want to use this together with
`image-dired-track-original-file'."
  (interactive)
  (let ((buf (image-dired-associated-dired-buffer))
        window frame)
    (setq window (image-dired-get-buffer-window buf))
    (if window
        (progn
          (if (not (equal (selected-frame) (setq frame (window-frame window))))
              (select-frame-set-input-focus frame))
          (select-window window))
      (message "Associated dired buffer not visible"))))

;;;###autoload
(defun image-dired-jump-thumbnail-buffer ()
  "Jump to thumbnail buffer."
  (interactive)
  (let ((window (image-dired-thumbnail-window))
        frame)
    (if window
        (progn
          (if (not (equal (selected-frame) (setq frame (window-frame window))))
              (select-frame-set-input-focus frame))
          (select-window window))
      (message "Thumbnail buffer not visible"))))

(defvar image-dired-thumbnail-mode-map (make-sparse-keymap)
  "Keymap for `image-dired-thumbnail-mode'.")

(defvar image-dired-thumbnail-mode-line-up-map (make-sparse-keymap)
  "Keymap for line-up commands in `image-dired-thumbnail-mode'.")

(defvar image-dired-thumbnail-mode-tag-map (make-sparse-keymap)
  "Keymap for tag commands in `image-dired-thumbnail-mode'.")

(defun image-dired-define-thumbnail-mode-keymap ()
  "Define keymap for `image-dired-thumbnail-mode'."

  ;; Keys
  (define-key image-dired-thumbnail-mode-map [right] 'image-dired-forward-image)
  (define-key image-dired-thumbnail-mode-map [left] 'image-dired-backward-image)
  (define-key image-dired-thumbnail-mode-map [up] 'image-dired-previous-line)
  (define-key image-dired-thumbnail-mode-map [down] 'image-dired-next-line)
  (define-key image-dired-thumbnail-mode-map "\C-f" 'image-dired-forward-image)
  (define-key image-dired-thumbnail-mode-map "\C-b" 'image-dired-backward-image)
  (define-key image-dired-thumbnail-mode-map "\C-p" 'image-dired-previous-line)
  (define-key image-dired-thumbnail-mode-map "\C-n" 'image-dired-next-line)

  (define-key image-dired-thumbnail-mode-map "d" 'image-dired-flag-thumb-original-file)
  (define-key image-dired-thumbnail-mode-map [delete]
    'image-dired-flag-thumb-original-file)
  (define-key image-dired-thumbnail-mode-map "m" 'image-dired-mark-thumb-original-file)
  (define-key image-dired-thumbnail-mode-map "u" 'image-dired-unmark-thumb-original-file)
  (define-key image-dired-thumbnail-mode-map "." 'image-dired-track-original-file)
  (define-key image-dired-thumbnail-mode-map [tab] 'image-dired-jump-original-dired-buffer)

  ;; add line-up map
  (define-key image-dired-thumbnail-mode-map "g" image-dired-thumbnail-mode-line-up-map)

  ;; map it to "g" so that the user can press it more quickly
  (define-key image-dired-thumbnail-mode-line-up-map "g" 'image-dired-line-up-dynamic)
  ;; "f" for "fixed" number of thumbs per row
  (define-key image-dired-thumbnail-mode-line-up-map "f" 'image-dired-line-up)
  ;; "i" for "interactive"
  (define-key image-dired-thumbnail-mode-line-up-map "i" 'image-dired-line-up-interactive)

  ;; add tag map
  (define-key image-dired-thumbnail-mode-map "t" image-dired-thumbnail-mode-tag-map)

  ;; map it to "t" so that the user can press it more quickly
  (define-key image-dired-thumbnail-mode-tag-map "t" 'image-dired-tag-thumbnail)
  ;; "r" for "remove"
  (define-key image-dired-thumbnail-mode-tag-map "r" 'image-dired-tag-thumbnail-remove)

  (define-key image-dired-thumbnail-mode-map "\C-m"
    'image-dired-display-thumbnail-original-image)
  (define-key image-dired-thumbnail-mode-map [C-return]
    'image-dired-thumbnail-display-external)

  (define-key image-dired-thumbnail-mode-map "l" 'image-dired-rotate-thumbnail-left)
  (define-key image-dired-thumbnail-mode-map "r" 'image-dired-rotate-thumbnail-right)

  (define-key image-dired-thumbnail-mode-map "L" 'image-dired-rotate-original-left)
  (define-key image-dired-thumbnail-mode-map "R" 'image-dired-rotate-original-right)

  (define-key image-dired-thumbnail-mode-map "D"
    'image-dired-thumbnail-set-image-description)

  (define-key image-dired-thumbnail-mode-map "\C-d" 'image-dired-delete-char)
  (define-key image-dired-thumbnail-mode-map " "
    'image-dired-display-next-thumbnail-original)
  (define-key image-dired-thumbnail-mode-map
    (kbd "DEL") 'image-dired-display-previous-thumbnail-original)
  (define-key image-dired-thumbnail-mode-map "c" 'image-dired-comment-thumbnail)
  (define-key image-dired-thumbnail-mode-map "q" 'image-dired-kill-buffer-and-window)

  ;; Mouse
  (define-key image-dired-thumbnail-mode-map [mouse-2] 'image-dired-mouse-display-image)
  (define-key image-dired-thumbnail-mode-map [mouse-1] 'image-dired-mouse-select-thumbnail)

  ;; Seems I must first set C-down-mouse-1 to undefined, or else it
  ;; will trigger the buffer menu. If I try to instead bind
  ;; C-down-mouse-1 to `image-dired-mouse-toggle-mark', I get a message
  ;; about C-mouse-1 not being defined afterwards. Annoying, but I
  ;; probably do not completely understand mouse events.

  (define-key image-dired-thumbnail-mode-map [C-down-mouse-1] 'undefined)
  (define-key image-dired-thumbnail-mode-map [C-mouse-1] 'image-dired-mouse-toggle-mark)

  ;; Menu
  (define-key image-dired-thumbnail-mode-map [menu-bar image-dired]
    (cons "Image-Dired" (make-sparse-keymap "Image-Dired")))

  (define-key image-dired-thumbnail-mode-map
    [menu-bar image-dired image-dired-kill-buffer-and-window]
    '("Quit" . image-dired-kill-buffer-and-window))

  (define-key image-dired-thumbnail-mode-map
    [menu-bar image-dired image-dired-delete-char]
    '("Delete thumbnail from buffer" . image-dired-delete-char))

  (define-key image-dired-thumbnail-mode-map
    [menu-bar image-dired image-dired-tag-thumbnail-remove]
    '("Remove tag from thumbnail" . image-dired-tag-thumbnail-remove))

  (define-key image-dired-thumbnail-mode-map
    [menu-bar image-dired image-dired-tag-thumbnail]
    '("Tag thumbnail" . image-dired-tag-thumbnail))

  (define-key image-dired-thumbnail-mode-map
    [menu-bar image-dired image-dired-comment-thumbnail]
    '("Comment thumbnail" . image-dired-comment-thumbnail))

  (define-key image-dired-thumbnail-mode-map
    [menu-bar image-dired image-dired-refresh-thumb]
    '("Refresh thumb" . image-dired-refresh-thumb))
  (define-key image-dired-thumbnail-mode-map
    [menu-bar image-dired image-dired-line-up-dynamic]
    '("Dynamic line up" . image-dired-line-up-dynamic))
  (define-key image-dired-thumbnail-mode-map
    [menu-bar image-dired image-dired-line-up]
    '("Line up thumbnails" . image-dired-line-up))

  (define-key image-dired-thumbnail-mode-map
    [menu-bar image-dired image-dired-rotate-thumbnail-left]
    '("Rotate thumbnail left" . image-dired-rotate-thumbnail-left))
  (define-key image-dired-thumbnail-mode-map
    [menu-bar image-dired image-dired-rotate-thumbnail-right]
    '("Rotate thumbnail right" . image-dired-rotate-thumbnail-right))

  (define-key image-dired-thumbnail-mode-map
    [menu-bar image-dired image-dired-rotate-original-left]
    '("Rotate original left" . image-dired-rotate-original-left))
  (define-key image-dired-thumbnail-mode-map
    [menu-bar image-dired image-dired-rotate-original-right]
    '("Rotate original right" . image-dired-rotate-original-right))

  (define-key image-dired-thumbnail-mode-map
    [menu-bar image-dired image-dired-toggle-movement-tracking]
    '("Toggle movement tracking on/off" . image-dired-toggle-movement-tracking))

  (define-key image-dired-thumbnail-mode-map
    [menu-bar image-dired image-dired-jump-original-dired-buffer]
    '("Jump to dired buffer" . image-dired-jump-original-dired-buffer))
  (define-key image-dired-thumbnail-mode-map
    [menu-bar image-dired image-dired-track-original-file]
    '("Track original" . image-dired-track-original-file))

  (define-key image-dired-thumbnail-mode-map
    [menu-bar image-dired image-dired-flag-thumb-original-file]
    '("Flag original for deletion" . image-dired-flag-thumb-original-file))
  (define-key image-dired-thumbnail-mode-map
    [menu-bar image-dired image-dired-unmark-thumb-original-file]
    '("Unmark original" . image-dired-unmark-thumb-original-file))
  (define-key image-dired-thumbnail-mode-map
    [menu-bar image-dired image-dired-mark-thumb-original-file]
    '("Mark original" . image-dired-mark-thumb-original-file))

  (define-key image-dired-thumbnail-mode-map
    [menu-bar image-dired image-dired-thumbnail-display-external]
    '("Display in external viewer" . image-dired-thumbnail-display-external))
  (define-key image-dired-thumbnail-mode-map
    [menu-bar image-dired image-dired-display-thumbnail-original-image]
    '("Display image" . image-dired-display-thumbnail-original-image)))

(defvar image-dired-display-image-mode-map (make-sparse-keymap)
  "Keymap for `image-dired-display-image-mode'.")

(defun image-dired-define-display-image-mode-keymap ()
  "Define keymap for `image-dired-display-image-mode'."

  ;; Keys
  (define-key image-dired-display-image-mode-map "q" 'image-dired-kill-buffer-and-window)

  (define-key image-dired-display-image-mode-map "f"
    'image-dired-display-current-image-full)

  (define-key image-dired-display-image-mode-map "s"
    'image-dired-display-current-image-sized)

  ;; Menu
  (define-key image-dired-display-image-mode-map [menu-bar image-dired]
    (cons "Image-Dired" (make-sparse-keymap "Image-Dired")))

  (define-key image-dired-display-image-mode-map
    [menu-bar image-dired image-dired-kill-buffer-and-window]
    '("Quit" . image-dired-kill-buffer-and-window))

  (define-key image-dired-display-image-mode-map
    [menu-bar image-dired image-dired-display-current-image-sized]
    '("Display original, sized to fit" . image-dired-display-current-image-sized))

  (define-key image-dired-display-image-mode-map
    [menu-bar image-dired image-dired-display-current-image-full]
    '("Display original, full size" . image-dired-display-current-image-full))

  )

(defun image-dired-display-current-image-full ()
  "Display current image in full size."
  (interactive)
  (let ((file (image-dired-original-file-name)))
    (if file
        (progn
          (image-dired-display-image file t)
          (message "Full size image displayed"))
      (error "No original file name at point"))))

(defun image-dired-display-current-image-sized ()
  "Display current image in sized to fit window dimensions."
  (interactive)
  (let ((file (image-dired-original-file-name)))
    (if file
        (progn
          (image-dired-display-image file)
          (message "Full size image displayed"))
      (error "No original file name at point"))))

(define-derived-mode image-dired-thumbnail-mode
  fundamental-mode "image-dired-thumbnail"
  "Browse and manipulate thumbnail images using dired.
Use `image-dired-dired' and `image-dired-setup-dired-keybindings' to get a
nice setup to start with."
  (image-dired-define-thumbnail-mode-keymap)
  (message "image-dired-thumbnail-mode enabled"))

(define-derived-mode image-dired-display-image-mode
  fundamental-mode "image-dired-image-display"
  "Mode for displaying and manipulating original image.
Resized or in full-size."
  (image-dired-define-display-image-mode-keymap)
  (message "image-dired-display-image-mode enabled"))

;;;###autoload
(defun image-dired-setup-dired-keybindings ()
  "Setup easy-to-use keybindings for the commands to be used in dired mode.
Note that n, p and <down> and <up> will be hijacked and bound to
`image-dired-dired-x-line'."
  (interactive)

  ;; Hijack previous and next line movement. Let C-p and C-b be
  ;; though...

  (define-key dired-mode-map "p" 'image-dired-dired-previous-line)
  (define-key dired-mode-map "n" 'image-dired-dired-next-line)
  (define-key dired-mode-map [up] 'image-dired-dired-previous-line)
  (define-key dired-mode-map [down] 'image-dired-dired-next-line)

  (define-key dired-mode-map (kbd "C-S-n") 'image-dired-next-line-and-display)
  (define-key dired-mode-map (kbd "C-S-p") 'image-dired-previous-line-and-display)
  (define-key dired-mode-map (kbd "C-S-m") 'image-dired-mark-and-display-next)

  (define-key dired-mode-map "\C-td" 'image-dired-display-thumbs)
  (define-key dired-mode-map "\C-tt" 'image-dired-tag-files)
  (define-key dired-mode-map "\C-tr" 'image-dired-delete-tag)
  (define-key dired-mode-map [tab] 'image-dired-jump-thumbnail-buffer)
  (define-key dired-mode-map "\C-ti" 'image-dired-dired-display-image)
  (define-key dired-mode-map "\C-tx" 'image-dired-dired-display-external)
  (define-key dired-mode-map "\C-ta" 'image-dired-display-thumbs-append)
  (define-key dired-mode-map "\C-t." 'image-dired-display-thumb)
  (define-key dired-mode-map "\C-tc" 'image-dired-dired-comment-files)
  (define-key dired-mode-map "\C-tf" 'image-dired-mark-tagged-files)

  ;; Menu for dired
  (define-key dired-mode-map [menu-bar image-dired]
    (cons "Image-Dired" (make-sparse-keymap "Image-Dired")))

  (define-key dired-mode-map [menu-bar image-dired image-dired-copy-with-exif-file-name]
    '("Copy with EXIF file name" . image-dired-copy-with-exif-file-name))

  (define-key dired-mode-map [menu-bar image-dired image-dired-dired-comment-files]
    '("Comment files" . image-dired-dired-comment-files))

  (define-key dired-mode-map [menu-bar image-dired image-dired-mark-tagged-files]
    '("Mark tagged files" . image-dired-mark-tagged-files))

  (define-key dired-mode-map [menu-bar image-dired image-dired-delete-tag]
    '("Remove tag from files" . image-dired-delete-tag))

  (define-key dired-mode-map [menu-bar image-dired image-dired-tag-files]
    '("Tag files" . image-dired-tag-files))

  (define-key dired-mode-map [menu-bar image-dired image-dired-jump-thumbnail-buffer]
    '("Jump to thumbnail buffer" . image-dired-jump-thumbnail-buffer))

  (define-key dired-mode-map [menu-bar image-dired image-dired-toggle-movement-tracking]
    '("Toggle movement tracking" . image-dired-toggle-movement-tracking))

  (define-key dired-mode-map
    [menu-bar image-dired image-dired-toggle-append-browsing]
    '("Toggle append browsing" . image-dired-toggle-append-browsing))

  (define-key dired-mode-map
    [menu-bar image-dired image-dired-toggle-disp-props]
    '("Toggle display properties" . image-dired-toggle-dired-display-properties))

  (define-key dired-mode-map
    [menu-bar image-dired image-dired-dired-display-external]
    '("Display in external viewer" . image-dired-dired-display-external))
  (define-key dired-mode-map
    [menu-bar image-dired image-dired-dired-display-image]
    '("Display image" . image-dired-dired-display-image))
  (define-key dired-mode-map
    [menu-bar image-dired image-dired-display-thumb]
    '("Display this thumbnail" . image-dired-display-thumb))
  (define-key dired-mode-map
    [menu-bar image-dired image-dired-display-thumbs-append]
    '("Display thumbnails append" . image-dired-display-thumbs-append))
  (define-key dired-mode-map
    [menu-bar image-dired image-dired-display-thumbs]
    '("Display thumbnails" . image-dired-display-thumbs))

  (define-key dired-mode-map
    [menu-bar image-dired image-dired-create-thumbs]
    '("Create thumbnails for marked files" . image-dired-create-thumbs))

  (define-key dired-mode-map
    [menu-bar image-dired image-dired-mark-and-display-next]
    '("Mark and display next" . image-dired-mark-and-display-next))
  (define-key dired-mode-map
    [menu-bar image-dired image-dired-previous-line-and-display]
    '("Display thumb for previous file" . image-dired-previous-line-and-display))
  (define-key dired-mode-map
    [menu-bar image-dired image-dired-next-line-and-display]
    '("Display thumb for next file" . image-dired-next-line-and-display)))

1594 1595
(declare-function clear-image-cache "image.c" (&optional filter))

1596 1597 1598
(defun image-dired-create-thumbs (&optional arg)
  "Create thumbnail images for all marked files in dired.
With prefix argument ARG, create thumbnails even if they already exist
1599
\(i.e. use this to refresh your thumbnails)."
1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800
  (interactive "P")
  (let (curr-file thumb-name files count)
    (setq files (dired-get-marked-files))
    (mapcar
     (lambda (curr-file)
       (setq thumb-name (image-dired-thumb-name curr-file))
       ;; If the user overrides the exist check, we must clear the
       ;; image cache so that if the user wants to display the
       ;; thumnail, it is not fetched from cache.
       (if arg
           (clear-image-cache))
       (if (or (not (file-exists-p thumb-name))
               arg)
           (if (not (= 0 (image-dired-create-thumb curr-file
                                             (image-dired-thumb-name curr-file))))
               (error "Thumb could not be created"))))
     files)))

(defvar image-dired-slideshow-timer nil
  "Slideshow timer.")

(defvar image-dired-slideshow-count 0
  "Keeping track on number of images in slideshow.")

(defvar image-dired-slideshow-times 0
  "Number of pictures to display in slideshow.")

(defun image-dired-slideshow-step ()
  "Step to next file, if `image-dired-slideshow-times' has not been reached."
  (if (< image-dired-slideshow-count image-dired-slideshow-times)
      (progn
        (message "%s" (1+ image-dired-slideshow-count))
        (setq image-dired-slideshow-count (1+ image-dired-slideshow-count))
        (image-dired-next-line-and-display))
    (image-dired-slideshow-stop)))

(defun image-dired-slideshow-start ()
  "Start slideshow.
Ask user for number of images to show and the delay in between."
  (interactive)
  (setq image-dired-slideshow-count 0)
  (setq image-dired-slideshow-times (string-to-number (read-string "How many: ")))
  (let ((repeat (string-to-number
                 (read-string
                  "Delay, in seconds. Decimals are accepted : " "1"))))
    (setq image-dired-slideshow-timer
          (run-with-timer
           0 repeat
           'image-dired-slideshow-step))))

(defun image-dired-slideshow-stop ()
  "Cancel slideshow."
  (interactive)
  (cancel-timer image-dired-slideshow-timer))

(defun image-dired-delete-char ()
  "Remove current thumbnail from thumbnail buffer and line up."
  (interactive)
  (let ((inhibit-read-only t))
    (delete-char 1)
    (if (looking-at " ")
        (delete-char 1))))

;;;###autoload
(defun image-dired-display-thumbs-append ()
  "Append thumbnails to `image-dired-thumbnail-buffer'."
  (interactive)
  (image-dired-display-thumbs nil t t))

;;;###autoload
(defun image-dired-display-thumb ()
  "Shorthand for `image-dired-display-thumbs' with prefix argument."
  (interactive)
  (image-dired-display-thumbs t nil t))

(defun image-dired-line-up ()
  "Line up thumbnails according to `image-dired-thumbs-per-row'.
See also `image-dired-line-up-dynamic'."
  (interactive)
  (let ((inhibit-read-only t))
    (goto-char (point-min))
    (while (and (not (image-dired-image-at-point-p))
                (not (eobp)))
      (delete-char 1))
    (while (not (eobp))
      (forward-char)
      (while (and (not (image-dired-image-at-point-p))
                  (not (eobp)))
        (delete-char 1)))
    (goto-char (point-min))
    (let ((count 0))
      (while (not (eobp))
        (forward-char)
        (if (= image-dired-thumbs-per-row 1)
            (insert "\n")
          (insert " ")
          (setq count (1+ count))
          (when (and (= count (- image-dired-thumbs-per-row 1))
		     (not (eobp)))
            (forward-char)
            (insert "\n")
            (setq count 0)))))
    (goto-char (point-min))))

(defun image-dired-line-up-dynamic ()
  "Line up thumbnails images dynamically.
Calculate how many thumbnails fit."
  (interactive)
  (let* ((char-width (frame-char-width))
        (width (image-dired-window-width-pixels (image-dired-thumbnail-window)))
        (image-dired-thumbs-per-row
         (/ width
            (+ (* 2 image-dired-thumb-relief)
               (* 2 image-dired-thumb-margin)
               image-dired-thumb-width char-width))))
    (image-dired-line-up)))

(defun image-dired-line-up-interactive ()
  "Line up thumbnails interactively.
Ask user how many thumbnails should be displayed per row."
  (interactive)
  (let ((image-dired-thumbs-per-row
         (string-to-number (read-string "How many thumbs per row: "))))
    (if (not (> image-dired-thumbs-per-row 0))
        (message "Number must be greater than 0")
      (image-dired-line-up))))

(defun image-dired-thumbnail-display-external ()
  "Display original image for thumbnail at point using external viewer."
  (interactive)
  (let ((file (image-dired-original-file-name)))
    (if (not (image-dired-image-at-point-p))
        (message "No thumbnail at point")
      (if (not file)
          (message "No original file name found")
        (call-process shell-file-name nil nil nil shell-command-switch
		      (format "%s \"%s\"" image-dired-external-viewer file))))))

;;;###autoload
(defun image-dired-dired-display-external ()
  "Display file at point using an external viewer."
  (interactive)
  (let ((file (dired-get-filename)))
    (call-process shell-file-name nil nil nil shell-command-switch
		  (format "%s \"%s\"" image-dired-external-viewer file))))

(defun image-dired-window-width-pixels (window)
  "Calculate WINDOW width in pixels."
    (* (window-width window) (frame-char-width)))

(defun image-dired-window-height-pixels (window)
  "Calculate WINDOW height in pixels."
  ;; Note: The mode-line consumes one line
    (* (- (window-height window) 1) (frame-char-height)))

(defun image-dired-display-window ()
  "Return window where `image-dired-display-image-buffer' is visible."
  (get-window-with-predicate
   (lambda (window)
     (equal (buffer-name (window-buffer window)) image-dired-display-image-buffer))
   nil t))

(defun image-dired-thumbnail-window ()
  "Return window where `image-dired-thumbnail-buffer' is visible."
  (get-window-with-predicate
   (lambda (window)
     (equal (buffer-name (window-buffer window)) image-dired-thumbnail-buffer))
   nil t))

(defun image-dired-associated-dired-buffer-window ()
  "Return window where associated dired buffer is visible."
  (let (buf)
    (if (image-dired-image-at-point-p)
        (progn
          (setq buf (image-dired-associated-dired-buffer))
          (get-window-with-predicate
           (lambda (window)
             (equal (window-buffer window) buf))))
      (error "No thumbnail image at point"))))

(defun image-dired-display-window-width ()
  "Return width, in pixels, of image-dired's image display window."
  (- (image-dired-window-width-pixels (image-dired-display-window))
     image-dired-display-window-width-correction))

(defun image-dired-display-window-height ()
  "Return height, in pixels, of image-dired's image display window."
  (- (image-dired-window-height-pixels (image-dired-display-window))
     image-dired-display-window-height-correction))

(defun image-dired-display-image (file &optional original-size)
  "Display image FILE in image buffer.
Use this when you want to display the image, semi sized, in a new
window.  The image is sized to fit the display window (using a
temporary file, don't worry).  Because of this, it will not be as
quick as opening it directly, but on most modern systems it
should feel snappy enough.

If optional argument ORIGINAL-SIZE is non-nil, display image in its
original size."
  (let ((new-file (expand-file-name image-dired-temp-image-file))
1801 1802
        width height command ret
        (image-type 'jpeg))
1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820
    (setq file (expand-file-name file))
    (if (not original-size)
        (progn
          (setq width (image-dired-display-window-width))
          (setq height (image-dired-display-window-height))
          (setq command
                (format-spec
                 image-dired-cmd-create-temp-image-options
                 (list
                  (cons ?p image-dired-cmd-create-temp-image-program)
                  (cons ?w width)
                  (cons ?h height)
                  (cons ?f file)
                  (cons ?t new-file))))
          (setq ret (call-process shell-file-name nil nil nil
				  shell-command-switch command))
          (if (not (= 0 ret))
              (error "Could not resize image")))
1821
      (setq image-type (image-type-from-file-name file))
1822 1823 1824 1825 1826
      (copy-file file new-file t))
    (with-current-buffer (image-dired-create-display-image-buffer)
      (let ((inhibit-read-only t))
        (erase-buffer)
        (clear-image-cache)