;;; image-mode.el --- support for visiting image files
;;
-;; Copyright (C) 2005-2011 Free Software Foundation, Inc.
+;; Copyright (C) 2005-2012 Free Software Foundation, Inc.
;;
;; Author: Richard Stallman <rms@gnu.org>
;; Keywords: multimedia
(interactive "p")
(image-forward-hscroll (- n)))
-(defun image-next-line (&optional n)
+(defun image-next-line (n)
"Scroll image in current window upward by N lines.
Stop if the bottom edge of the image is reached."
(interactive "p")
;; Adjust frame and image size.
(defun image-mode-fit-frame ()
- "Fit the frame to the current image.
+ "Toggle whether to fit the frame to the current image.
This function assumes the current frame has only one window."
;; FIXME: This does not take into account decorations like mode-line,
;; minibuffer, header-line, ...
(define-key map "\C-c\C-c" 'image-toggle-display)
(define-key map (kbd "SPC") 'image-scroll-up)
(define-key map (kbd "DEL") 'image-scroll-down)
+ (define-key map (kbd "RET") 'image-toggle-animation)
(define-key map [remap forward-char] 'image-forward-hscroll)
(define-key map [remap backward-char] 'image-backward-hscroll)
(define-key map [remap right-char] 'image-forward-hscroll)
(add-hook 'change-major-mode-hook 'image-toggle-display-text nil t)
(add-hook 'after-revert-hook 'image-after-revert-hook nil t)
(run-mode-hooks 'image-mode-hook)
- (message "%s" (concat
- (substitute-command-keys
- "Type \\[image-toggle-display] to view the image as ")
- (if (image-get-display-property)
- "text" "an image") ".")))
+ (let ((image (image-get-display-property))
+ (msg1 (substitute-command-keys
+ "Type \\[image-toggle-display] to view the image as ")))
+ (cond
+ ((null image)
+ (message "%s" (concat msg1 "an image.")))
+ ((image-animated-p image)
+ (message "%s"
+ (concat msg1 "text, or "
+ (substitute-command-keys
+ "\\[image-toggle-animation] to animate."))))
+ (t
+ (message "%s" (concat msg1 "text."))))))
+
(error
(image-mode-as-text)
(funcall
(if (called-interactively-p 'any) 'error 'message)
"Cannot display image: %s" (cdr err)))))
+
;;;###autoload
(define-minor-mode image-minor-mode
- "Toggle Image minor mode.
-With arg, turn Image minor mode on if arg is positive, off otherwise.
-It provides the key \\<image-mode-map>\\[image-toggle-display] \
-to switch back to `image-mode'
-to display an image file as the actual image."
+ "Toggle Image minor mode in this buffer.
+With a prefix argument ARG, enable Image minor mode if ARG is
+positive, and disable it otherwise. If called from Lisp, enable
+the mode if ARG is omitted or nil.
+
+Image minor mode provides the key \\<image-mode-map>\\[image-toggle-display],
+to switch back to `image-mode' and display an image file as the
+actual image."
nil (:eval (if image-type (format " Image[%s]" image-type) " Image"))
image-minor-mode-map
:group 'image
(buffer-undo-list t)
(modified (buffer-modified-p)))
(remove-list-of-text-properties (point-min) (point-max)
- '(display intangible read-nonsticky
+ '(display read-nonsticky ;; intangible
read-only front-sticky))
(set-buffer-modified-p modified)
(if (called-interactively-p 'any)
"Show the image of the image file.
Turn the image data into a real image, but only if the whole file
was inserted."
- (unless (derived-mode-p 'image-mode major-mode)
+ (unless (derived-mode-p 'image-mode)
(error "The buffer is not in Image mode"))
(let* ((filename (buffer-file-name))
(data-p (not (and filename
(buffer-substring-no-properties (point-min) (point-max)))
filename))
(type (image-type file-or-data nil data-p))
- (image0 (create-animated-image file-or-data type data-p))
- (image (append image0
- (image-transform-properties image0)))
- (props
- `(display ,image
- intangible ,image
- rear-nonsticky (display intangible)
- read-only t front-sticky (read-only)))
+ (image (create-image file-or-data type data-p))
(inhibit-read-only t)
(buffer-undo-list t)
- (modified (buffer-modified-p)))
+ (modified (buffer-modified-p))
+ props)
+
+ ;; Discard any stale image data before looking it up again.
(image-flush image)
+ (setq image (append image (image-transform-properties image)))
+ (setq props
+ `(display ,image
+ ;; intangible ,image
+ rear-nonsticky (display) ;; intangible
+ read-only t front-sticky (read-only)))
+
(let ((buffer-file-truename nil)) ; avoid changing dir mtime by lock_file
(add-text-properties (point-min) (point-max) props)
(restore-buffer-modified-p modified))
(when (image-get-display-property)
(image-toggle-display-text)
;; Update image display.
- (redraw-frame (selected-frame))
+ (mapc (lambda (window) (redraw-frame (window-frame window)))
+ (get-buffer-window-list (current-buffer) 'nomini 'visible))
(image-toggle-display-image)))
\f
+;;; Animated images
+
+(defcustom image-animate-loop nil
+ "Non-nil means animated images loop forever, rather than playing once."
+ :type 'boolean
+ :version "24.1"
+ :group 'image)
+
+(defun image-toggle-animation ()
+ "Start or stop animating the current image.
+If `image-animate-loop' is non-nil, animation loops forever.
+Otherwise it plays once, then stops."
+ (interactive)
+ (let ((image (image-get-display-property))
+ animation)
+ (cond
+ ((null image)
+ (error "No image is present"))
+ ((null (setq animation (image-animated-p image)))
+ (message "No image animation."))
+ (t
+ (let ((timer (image-animate-timer image)))
+ (if timer
+ (cancel-timer timer)
+ (let ((index (plist-get (cdr image) :index)))
+ ;; If we're at the end, restart.
+ (and index
+ (>= index (1- (car animation)))
+ (setq index nil))
+ (image-animate image index
+ (if image-animate-loop t)))))))))
+
+\f
;;; Support for bookmark.el
(declare-function bookmark-make-record-default
"bookmark" (&optional no-file no-context posn))
(image-toggle-display))))
\f
-(defvar image-transform-minor-mode-map
- (let ((map (make-sparse-keymap)))
- ;; (define-key map [(control ?+)] 'image-scale-in)
- ;; (define-key map [(control ?-)] 'image-scale-out)
- ;; (define-key map [(control ?=)] 'image-scale-none)
- ;; (define-key map "c f h" 'image-scale-fit-height)
- ;; (define-key map "c ]" 'image-rotate-right)
- map)
- "Minor mode keymap `image-transform-mode'.")
-
-(define-minor-mode image-transform-mode
- "Minor mode for scaling and rotating images.
-This minor mode has no effect unless Emacs is compiled with
-ImageMagick support."
- nil "image-transform" image-transform-minor-mode-map)
-
+;; Not yet implemented.
+;;; (defvar image-transform-minor-mode-map
+;;; (let ((map (make-sparse-keymap)))
+;;; ;; (define-key map [(control ?+)] 'image-scale-in)
+;;; ;; (define-key map [(control ?-)] 'image-scale-out)
+;;; ;; (define-key map [(control ?=)] 'image-scale-none)
+;;; ;; (define-key map "c f h" 'image-scale-fit-height)
+;;; ;; (define-key map "c ]" 'image-rotate-right)
+;;; map)
+;;; "Minor mode keymap `image-transform-mode'.")
+;;;
+;;; (define-minor-mode image-transform-mode
+;;; "Minor mode for scaling and rotating images.
+;;; With a prefix argument ARG, enable the mode if ARG is positive,
+;;; and disable it otherwise. If called from Lisp, enable the mode
+;;; if ARG is omitted or nil. This minor mode requires Emacs to have
+;;; been compiled with ImageMagick support."
+;;; nil "image-transform" image-transform-minor-mode-map)
+
+
+;; FIXME this doesn't seem mature yet. Document in manual when it is.
(defvar image-transform-resize nil
"The image resize operation.
Its value should be one of the following:
- `fit-width', meaning to fit the image to the window width.
- A number, which is a scale factor (the default size is 100).")
-(defvar image-transform-rotation 0.0)
-
-(defun image-transform-properties (display)
- "Rescale and/or rotate the current image.
-The scale factor and rotation angle are given by the variables
-`image-transform-resize' and `image-transform-rotation'. This
-takes effect only if Emacs is compiled with ImageMagick support."
- (let* ((size (image-size display t))
- (height
- (cond
- ((numberp image-transform-resize)
- (unless (= image-transform-resize 100)
- (* image-transform-resize (cdr size))))
- ((eq image-transform-resize 'fit-height)
- (- (nth 3 (window-inside-pixel-edges))
- (nth 1 (window-inside-pixel-edges))))))
- (width (if (eq image-transform-resize 'fit-width)
- (- (nth 2 (window-inside-pixel-edges))
- (nth 0 (window-inside-pixel-edges))))))
- ;;TODO fit-to-* should consider the rotation angle
- `(,@(if height (list :height height))
- ,@(if width (list :width width))
- ,@(if (not (equal 0.0 image-transform-rotation))
- (list :rotation image-transform-rotation)))))
-
+(defvar image-transform-rotation 0.0
+ "Rotation angle for the image in the current Image mode buffer.")
+
+(defun image-transform-properties (spec)
+ "Return rescaling/rotation properties for image SPEC.
+These properties are determined by the Image mode variables
+`image-transform-resize' and `image-transform-rotation'. The
+return value is suitable for appending to an image spec.
+
+Rescaling and rotation properties only take effect if Emacs is
+compiled with ImageMagick support."
+ (when (or image-transform-resize
+ (not (equal image-transform-rotation 0.0)))
+ ;; Note: `image-size' looks up and thus caches the untransformed
+ ;; image. There's no easy way to prevent that.
+ (let* ((size (image-size spec t))
+ (height
+ (cond
+ ((numberp image-transform-resize)
+ (unless (= image-transform-resize 100)
+ (* image-transform-resize (cdr size))))
+ ((eq image-transform-resize 'fit-height)
+ (- (nth 3 (window-inside-pixel-edges))
+ (nth 1 (window-inside-pixel-edges))))))
+ (width (if (eq image-transform-resize 'fit-width)
+ (- (nth 2 (window-inside-pixel-edges))
+ (nth 0 (window-inside-pixel-edges))))))
+ ;;TODO fit-to-* should consider the rotation angle
+ `(,@(if height (list :height height))
+ ,@(if width (list :width width))
+ ,@(if (not (equal 0.0 image-transform-rotation))
+ (list :rotation image-transform-rotation))))))
+
+;; FIXME 2 works, but eg 1.9 or 0.5 don't?
(defun image-transform-set-scale (scale)
"Prompt for a number, and resize the current image by that amount.
This command has no effect unless Emacs is compiled with
HCoop / bpt / emacs.git / blobdiff