From: Carsten Dominik <carsten.dominik@gmail.com>
To: Eric Schulte <schulte.eric@gmail.com>
Cc: Org Mode <emacs-orgmode@gnu.org>
Subject: Re: feature request: save LaTeX as title for ltxpng html images
Date: Tue, 30 Mar 2010 09:37:18 +0200 [thread overview]
Message-ID: <CC3D0DBC-7BCE-481D-9504-73674CA0D0F7@gmail.com> (raw)
In-Reply-To: <87ljdaba0e.fsf@gmail.com>
Hi Eric, looks good to me, please go ahead and apply this patch.
I would not have expected that this is such a compact change.
The only improvement I can see would be to use org-add-props to
put the properties on the link before inserting it and in this
way shave off a let form.
Thanks!
- Carsten
On Mar 30, 2010, at 8:26 AM, Eric Schulte wrote:
> Hi,
>
> The attached patch places the latex source into alt html image tags as
> described below. I think it should be safe, in that I remove all "s
> from inside of the alt string.
>
> Thanks for the implementation advice -- Eric
>
> diff --git a/lisp/org-html.el b/lisp/org-html.el
> index b8925e7..2246daf 100644
> --- a/lisp/org-html.el
> +++ b/lisp/org-html.el
> @@ -1529,7 +1529,8 @@ lang=\"%s\" xml:lang=\"%s\">
> "Create image tag with source and attributes."
> (save-match-data
> (if (string-match "^ltxpng/" src)
> - (format "<img src=\"%s\"/>" src)
> + (format "<img src=\"%s\" alt=\"%s\"/>"
> + src (org-find-text-property-in-string 'org-latex-
> src src))
> (let* ((caption (org-find-text-property-in-string 'org-caption
> src))
> (attr (org-find-text-property-in-string 'org-attributes src))
> (label (org-find-text-property-in-string 'org-label src)))
> Modified lisp/org.el
> diff --git a/lisp/org.el b/lisp/org.el
> index e30c49a..480e9f1 100644
> --- a/lisp/org.el
> +++ b/lisp/org.el
> @@ -15183,7 +15183,12 @@ Some of the options can be changed using
> the variable
> (push ov org-latex-fragment-image-overlays)
> (goto-char end))
> (delete-region beg end)
> - (insert link))))))))
> + (let ((link-beg (point))
> + (link-end (progn (insert link) (point))))
> + (add-text-properties
> + link-beg link-end
> + (list 'org-latex-src
> + (replace-regexp-in-string "\"" ""
> txt)))))))))))
>
> ;; This function borrows from Ganesh Swami's latex2png.el
> (defun org-create-formula-image (string tofile options buffer)
>
>
> Carsten Dominik <carsten.dominik@gmail.com> writes:
>
>> On Mar 26, 2010, at 4:01 PM, Eric Schulte wrote:
>>
>>> Hi,
>>>
>>> HTML <img> tags allow both alternate text (rendered when the image
>>> can't
>>> be rendered), as well as titles which show as tooltips on hover. I
>>> wonder if it would be difficult to place the text latex used in
>>> generating an image into these two fields. If not then I at least
>>> would
>>> find it useful.
>>
>> It is not trivial, but not too hard either.
>>
>> It is not trivial because Org first produces the images and inserts
>> org-style links. Later, in a second step, these links are replaced
>> (formatted for HTML).
>> One way to solve this is that `org-format-latex' will add this
>> information
>> as text properties to the link. Then later, when the HTML formatting
>> is done,
>> the text property could be retrieved and converted into the
>> attributes
>> you are mentioning.
>>
>> You have worked on org-format-latex before, I think this should be
>> relatively easy for you.
>>
>> - Carsten
- Carsten
next prev parent reply other threads:[~2010-03-30 7:53 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-26 15:01 feature request: save LaTeX as title for ltxpng html images Eric Schulte
2010-03-26 20:42 ` Carsten Dominik
2010-03-30 6:26 ` Eric Schulte
2010-03-30 7:37 ` Carsten Dominik [this message]
2010-03-31 16:24 ` Eric Schulte
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