gynamics <dybfys...@163.com> writes: >> However, you can also set :background in `org-format-latex-options' to >> "Transparent". Did you try it? > > Yes, I have reviewed related code and tried it. Set `:background > "Transparent"` in `org-format-latex-option` only makes sure that latex > will output png images with a transparent background. But to display the > transparent part transparently when my Emacs frame has > `alpha-background` set to be transparent, currently `:mask heuristic` > seems to be the only way, afaik.
According to my bug#77104 report to Emacs (https://yhetil.org/emacs-bugs/87h63q9pxw.fsf@localhost/) the problem with transparency is indeed an Emacs bug. However, I am afraid that :mask heuristic will do more harm than benefit to be applied Org upstream. Specifically, I am afraid that :mask heuristic may cause ugly rendering when image file happens to _not_ have background color in the corners. So, while solving your specific issue, we may introduce another issue for _more_ users. Thus, I am canceling this patch. Canceled. After bug#77104 is fixed, you should be able to setup transparency to achieve what you need. Meanwhile, I can only suggest adding an advise to `org--make-preview-overlay' to apply :mask heuristics. -- Ihor Radchenko // yantar92, Org mode maintainer, Learn more about Org mode at <https://orgmode.org/>. Support Org development at <https://liberapay.com/org-mode>, or support my work at <https://liberapay.com/yantar92>
