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| -rw-r--r-- | nov.el | 29 |
1 files changed, 29 insertions, 0 deletions
@@ -515,6 +515,8 @@ Each alist item consists of the identifier and full path." (mapcar 'nov-urldecode (list (url-filename url) (url-target url)))) ;; adapted from `shr-rescale-image' +;; TODO: adjust to latest shr code (which added zooming support) +;; TODO: support width/height as supplied in img/image/svg attributes (defun nov-insert-image (path alt) "Insert an image for PATH at point, falling back to ALT. This function honors `shr-max-image-proportion' if possible." @@ -556,6 +558,31 @@ internal ones." (setq url (expand-file-name (nov-urldecode url))) (nov-insert-image url alt)))) +(defun nov--render-image (dom &optional url) + (let ((img-tag (dom-node 'img + (dom-attributes dom) + (dom-children dom)))) + (nov-render-img img-tag url))) + +(defun nov-render-svg (dom) + "Custom <svg> rendering function for DOM. +If the SVG element only contains <image> tags with an internal +URL, insert each image with `nov-insert-image'. Otherwise, fall +back to regular <img> rendering via `nov-render-img' (for +external URLs) or regular SVG rendering via `shr-tag-svg'." + (when (and (image-type-available-p 'svg) + (not shr-inhibit-images)) + (let ((children (dom-children dom))) + (if (seq-every-p (lambda (child) (eq (dom-tag child) 'image)) children) + (dolist (image-tag children) + (let ((url (or (dom-attr image-tag 'href) + (dom-attr image-tag 'xlink:href)))) + (if (nov-external-url-p url) + (nov--render-image dom) + (nov-insert-image + (expand-file-name (nov-urldecode url)) "")))) + (shr-tag-svg dom))))) + (defun nov-render-title (dom) "Custom <title> rendering function for DOM. Sets `header-line-format' according to `nov-header-line-format'." @@ -578,6 +605,8 @@ Sets `header-line-format' according to `nov-header-line-format'." (defvar nov-shr-rendering-functions '(;; default function uses url-retrieve and fails on local images (img . nov-render-img) + ;; likewise, but for SVG tags containing local images + (svg . nov-render-svg) ;; titles are rendered *inside* the document by default (title . nov-render-title)) "Alist of rendering functions used with `shr-render-region'.") |