tavo/emacs-latex-preview-server
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dpi support

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tavo-wasd 2024-06-23 10:07:05 -06:00
parent d9dafb4ab8
commit 5d999b01b2
3 changed files with 8 additions and 12 deletions
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3
public/index.php
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@ -1,6 +1,7 @@
<?php
move_uploaded_file($_FILES["file"]["tmp_name"], "tmp.tex");
$output = shell_exec("./tex2png.sh tmp.tex");
$dpi = isset($_POST['dpi']) ? intval($_POST['dpi']) : 200;
$output = shell_exec("./tex2png.sh tmp.tex $dpi");
if ($output !== null) {
$host = $_SERVER['HTTP_HOST'];

3
public/tex2png.sh
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@ -1,11 +1,12 @@
#!/bin/sh
file="$1"
dpi="$2"
[ "$file" ] || exit 1
out="${file%.tex}.png"
makepng() {
latex -interaction nonstopmode "$file" >/dev/null 2>&1 || return 1
dvipng -D 200 -T tight -bg Transparent -o "$out" "${file%.tex}.dvi" >/dev/null 2>&1 || return 1
dvipng -D "$dpi" -T tight -bg Transparent -o "$out" "${file%.tex}.dvi" >/dev/null 2>&1 || return 1
}
makepng && echo "$out" || exit 1

14
texpngweb.el
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@ -1,9 +1,7 @@
;; Sample emacs configuration for this setup
;; Adjust dpi in ./public/tex2png.sh
;; dvipng -D 350 looks good on my device (400dpi)
;; Sample emacs configuration
(if (eq system-type 'android)
(progn
(progn ;; Android custom org-latex-preview
(setq org-preview-latex-process-alist
'((texpngweb
:programs ("curl")
@ -12,10 +10,6 @@
:image-input-type "tex"
:image-output-type "png"
:image-size-adjust (1.0 . 1.0)
;; This works in my pc, but not in android.
;; :latex-compiler ("curl -F \"file=@%f\" http://0.0.0.0:8000")
;; For some reason this works in android (and also on pc)
;; And for whatever reason image-converter still needs to be set
:latex-compiler ("curl -F \"file=@%f\" http://0.0.0.0:8000 && curl http://0.0.0.0:8000/tmp.png -o %O")
:image-converter ("curl http://0.0.0.0:8000/tmp.png -o %O"))))
:latex-compiler ("")
:image-converter ("curl -F \"file=@%f\" -F \"dpi=%D\" http://0.0.0.0:8000 && curl http://0.0.0.0:8000/tmp.png -o %O"))))
(setq org-latex-create-formula-image-program 'texpngweb)))