[Evolution-users] Latex Equations plugin for Evolution

[Cyril Soler]

Hi, I have been looking for a plugin to convert latex code into proper equations (such as this $\int_0^\infty f(x)dx$ => nice equation inside the text) without success, so I implemented one.
I would like to publish the code, but before that I need to make the UI
user-friendly. I have a few questions, which I hope this mailing list
is the right place for (Please tell me if I'm wrong):

- I use this to add an action to the toolbar of the msg composer
window:

   staticGtkActionEntrymsg_composer_entries[]={
    { "convert-latex-equations-action",
      "pdflatex",
	  N_("M_y Message Composer Action..."),
      "<Shift><Control>l",
      N_("Convert LaTeX equations"),
	  G_CALLBACK (action_msg_composer_cb) }
};

however, the "pdflatex" icon is only available in the breeze icon theme (/usr/share/icons/breeze/actions/22/latex.svg) 
so the plugin doesn't find it.

Q1: how can I specify this icon?

Q2: how can I specify my own svg (or png) icon?

I obviously looked into the examples here: https://github.com/GNOME/evolution/tree/master/src/plugins but none of them seem to use their own icon.

Also:

Q3: how can I enable/disable a button of the interface (the one I added) dynamically depending on whether the editor is HTML of plain text (inserting images requires HTML)

Thank you in advance for any help or proper redirection!
Cyril
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