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Add Alt text to latex image

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I'm trying to go over accessibilities issues in AnkiDroid. Since we'll use rust backend, I thought I might as well go
over it in rust directly. The only side effect in anki is that, if you copy a text with the image, you'll get the LaTeX
copied instead of nothing. Alas, it seems qt does not show alt text.
This commit is contained in:
Arthur Milchior 2020-12-30 18:00:06 +01:00
parent 67191d339c
commit d933d7774f
1 changed files with 11 additions and 4 deletions
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15
rslib/src/latex.rs
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@ -66,7 +66,7 @@ pub(crate) fn extract_latex(text: &str, svg: bool) -> (String, Vec<ExtractedLate
};
let latex_text = strip_html_for_latex(&latex);
let fname = fname_for_latex(&latex_text, svg);
let img_link = image_link_for_fname(&fname);
let img_link = image_link_for_fname(&latex_text, &fname);
extracted.push(ExtractedLatex {
fname,
latex: latex_text.into(),
@ -97,8 +97,12 @@ fn fname_for_latex(latex: &str, svg: bool) -> String {
format!("latex-{}.{}", csum, ext)
}
fn image_link_for_fname(fname: &str) -> String {
format!("<img class=latex src=\"{}\">", fname)
fn image_link_for_fname(src: &str, fname: &str) -> String {
format!(
"<img class=latex alt=\"{}\" src=\"{}\">",
htmlescape::encode_attribute(src),
fname
)
}
#[cfg(test)]
@ -111,7 +115,10 @@ mod test {
assert_eq!(
extract_latex("a[latex]one<br>and<div>two[/latex]b", false),
(
format!("a<img class=latex src=\"{}\">b", fname),
format!(
"a<img class=latex alt=\"one&#x0A;and&#x0A;two\" src=\"{}\">b",
fname
),
vec![ExtractedLatex {
fname: fname.into(),
latex: "one\nand\ntwo".into()