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Mu4e: use file when imagemagik not present

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We will also use this as an opportunity to clean up the use of
+org-msg-img-scale-css.
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TEC 2021-07-30 01:49:18 +08:00
parent fe5e410b74
commit 7e1f7915c0
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1 changed files with 25 additions and 21 deletions
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46
modules/email/mu4e/autoload/advice.el
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@ -38,14 +38,19 @@ clicked."
(defun +org-msg-img-scale-css (img-uri)
"For a given IMG-URI, use imagemagik to find its width."
(if +org-msg-currently-exporting
;; TODO change to use 'file' (NB: would only work for PNG though, apparently)
(let ((width-call (doom-call-process "identify" "-format" "%w"
(substring img-uri 7)))) ; 7=(length "file://")
(when (= (car width-call) 0)
(list :width
(format "%.1fpx"
(/ (string-to-number (cdr width-call))
(plist-get org-format-latex-options :scale))))))
(when (and (not IS-WINDOWS)) ; relies on posix path
(let ((with-call (and (executable-find "identify")
(doom-call-process "identify" "-format" "%w"
(substring img-uri 7))))) ; 7=(length "file://")
(unless width-call
(setq width-call (doom-call-process "file" (substring img-uri 7)))
(setcdr width-call (replace-regexp-in-string "^.*image data, \\([0-9]+\\).*$" "\\1" (cdr width-call)))
(setcar width-call (if (< 0 (string-to-number (cdr width-call))) 0 1)))
(when (= (car width-call) 0)
(list :width
(format "%.1fpx"
(/ (string-to-number (cdr width-call))
(plist-get org-format-latex-options :scale)))))))
(list :style (format "transform: scale(%.3f)"
(/ 1.0 (plist-get org-format-latex-options :scale))))))
@ -70,14 +75,13 @@ account for the value of :scale in `org-format-latex-options'."
(org-html-format-latex latex-frag processing-type info)))
(when (and formula-link (string-match "file:\\([^]]*\\)" formula-link))
(let ((source (org-export-file-uri (match-string 1 formula-link)))
(attributes (list :alt latex-frag
:class (concat "latex-fragment-"
(if (equal "\\(" (substring latex-frag 0 2))
"inline" "block")))))
(when (and (memq processing-type '(dvipng convert))
(not IS-WINDOWS) ; relies on posix path
(executable-find "identify"))
(apply #'plist-put attributes (+org-msg-img-scale-css source)))
(attributes (append (list :alt latex-frag
:class
(concat "latex-fragment-"
(if (equal "\\(" (substring latex-frag 0 2))
"inline" "block")))
(when (memq processing-type '(dvipng convert))
(+org-msg-img-scale-css source)))))
(org-html--format-image source attributes info)))))
(t latex-frag))))
@ -118,11 +122,11 @@ scales the image to account for the value of :scale in `org-format-latex-options
processing-type info)))
(when (and formula-link (string-match "file:\\([^]]*\\)" formula-link))
(let ((source (org-export-file-uri (match-string 1 formula-link))))
(when (and (memq processing-type '(dvipng convert))
(not IS-WINDOWS) ; relies on posix path
(executable-find "identify"))
(apply #'plist-put attributes (+org-msg-img-scale-css source)))
(org-html--wrap-latex-environment
(org-html--format-image source attributes info)
(org-html--format-image source
(append attributes
(when (memq processing-type '(dvipng convert))
(+org-msg-img-scale-css source)))
info)
info caption label)))))
(t (org-html--wrap-latex-environment latex-frag info caption label)))))