diff options
Diffstat (limited to 'lisp/image-mode.el')
| -rw-r--r-- | lisp/image-mode.el | 75 |
1 files changed, 51 insertions, 24 deletions
diff --git a/lisp/image-mode.el b/lisp/image-mode.el index 2ed7fbeec67..9e527f1f0b3 100644 --- a/lisp/image-mode.el +++ b/lisp/image-mode.el @@ -49,6 +49,26 @@ "Special hook run when image data is requested in a new window. It is called with one argument, the initial WINPROPS.") +;; 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: + - nil, meaning no resizing. + - `fit-height', meaning to fit the image to the window height. + - `fit-width', meaning to fit the image to the window width. + - A number, which is a scale factor (the default size is 1).") + +(defvar image-transform-scale 1.0 + "The scale factor of the image being displayed.") + +(defvar image-transform-rotation 0.0 + "Rotation angle for the image in the current Image mode buffer.") + +(defvar image-transform-right-angle-fudge 0.0001 + "Snap distance to a multiple of a right angle. +There's no deep theory behind the default value, it should just +be somewhat larger than ImageMagick's MagickEpsilon.") + (defun image-mode-winprops (&optional window cleanup) "Return winprops of WINDOW. A winprops object has the shape (WINDOW . ALIST). @@ -90,6 +110,8 @@ otherwise it defaults to t, used for times when the buffer is not displayed." (defun image-mode-window-put (prop val &optional winprops) (unless (consp winprops) (setq winprops (image-mode-winprops winprops))) + (unless (eq t (car winprops)) + (image-mode-window-put prop val t)) (setcdr winprops (cons (cons prop val) (delq (assq prop (cdr winprops)) (cdr winprops))))) @@ -377,8 +399,6 @@ call." ["Show as Text" image-toggle-display :active t :help "Show image as text"] "--" - ["Fit Frame to Image" image-mode-fit-frame :active t - :help "Resize frame to match image"] ["Fit to Window Height" image-transform-fit-to-height :visible (eq image-type 'imagemagick) :help "Resize image to match the window height"] @@ -388,6 +408,9 @@ call." ["Rotate Image..." image-transform-set-rotation :visible (eq image-type 'imagemagick) :help "Rotate the image"] + ["Reset Transformations" image-transform-reset + :visible (eq image-type 'imagemagick) + :help "Reset all image transformations"] "--" ["Show Thumbnails" (lambda () @@ -400,6 +423,9 @@ call." ["Previous Image" image-previous-file :active buffer-file-name :help "Move to previous image in this directory"] "--" + ["Fit Frame to Image" image-mode-fit-frame :active t + :help "Resize frame to match image"] + "--" ["Animate Image" image-toggle-animation :style toggle :selected (let ((image (image-get-display-property))) (and image (image-animate-timer image))) @@ -636,8 +662,19 @@ was inserted." (string-make-unibyte (buffer-substring-no-properties (point-min) (point-max))) filename)) - (type (image-type file-or-data nil data-p)) - (image (create-image file-or-data type data-p)) + ;; If we have a `fit-width' or a `fit-height', don't limit + ;; the size of the image to the window size. + (edges (and (null image-transform-resize) + (window-inside-pixel-edges + (get-buffer-window (current-buffer))))) + (type (if (fboundp 'imagemagick-types) + 'imagemagick + (image-type file-or-data nil data-p))) + (image (if (not edges) + (create-image file-or-data type data-p) + (create-image file-or-data type data-p + :max-width (- (nth 2 edges) (nth 0 edges)) + :max-height (- (nth 3 edges) (nth 1 edges))))) (inhibit-read-only t) (buffer-undo-list t) (modified (buffer-modified-p)) @@ -888,26 +925,6 @@ replacing the current Image mode buffer." ;; 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: - - nil, meaning no resizing. - - `fit-height', meaning to fit the image to the window height. - - `fit-width', meaning to fit the image to the window width. - - A number, which is a scale factor (the default size is 1).") - -(defvar image-transform-scale 1.0 - "The scale factor of the image being displayed.") - -(defvar image-transform-rotation 0.0 - "Rotation angle for the image in the current Image mode buffer.") - -(defvar image-transform-right-angle-fudge 0.0001 - "Snap distance to a multiple of a right angle. -There's no deep theory behind the default value, it should just -be somewhat larger than ImageMagick's MagickEpsilon.") - (defsubst image-transform-width (width height) "Return the bounding box width of a rotated WIDTH x HEIGHT rectangle. The rotation angle is the value of `image-transform-rotation' in degrees." @@ -1089,6 +1106,16 @@ Emacs is compiled with ImageMagick support." (setq image-transform-rotation (float (mod rotation 360))) (image-toggle-display-image)) +(defun image-transform-reset () + "Display the current image with the default size and rotation. +This command has no effect unless Emacs is compiled with +ImageMagick support." + (interactive) + (setq image-transform-resize nil + image-transform-rotation 0.0 + image-transform-scale 1) + (image-toggle-display-image)) + (provide 'image-mode) ;;; image-mode.el ends here |