So I want to use Anjuta and add a Theme. I use the GtkSourceView plugin as my editor. For some reason it doesn't allow me to define colors like with any any other editor but instead requires me to use a gtk theme.
I use Ubuntu Mate 20.04. I'm not sure why but gtksourceview-3.0 and gtksourceview-4 are both installed on my system.
To add a theme I tried a few things. I read someplace that you can make themes with a project called "oomox". I tried that, but it created a massive array of files and directories that didn't seem at all like what GtkSourceView uses, which is a single file. So I scrapped that.
I coped obsidian.xml (the closest to what I want my thing to look like) from /usr/share/gtksourceview-4/styles and edited it. I placed my new file into ~/.themes. That didn't work (it doesn't show up in the list when selecting a theme for Anjuta). I tried ~/.local/share/gtksourceview-4/styles and ~/.local/share/gtksourceview-3.0/styles and also ~/.local/share/gedit and ~/.local/share/gedit/styles (gedit is not installed though).
I am confused how I can add a simple style to this editor and why there isn't any information on that topic. I can imagine people wanting to customize their IDE all the time. Maybe I'm missing something obvious? I searched "adding theme to gtksourceview" and "adding theme to Anjuta". And all I found was how to add a theme to gedit (hence my attempts above) and how to switch the default themes.
Also I don't want to add my theme to the system install directory (/usr or /etc). Surely there is a way to add it for users (/home/<user>) only.
It would be really nice if there were some program I could use to edit my style and give me a preview of some code. (Like most other IDEs). If there is no such thing, then I'd be really nice to at least have a list of all the valid tags.
Edit: Just to test it, I put the new file in with the rest of them in /usr/share/gtksourceview-4/styles/ and 3.0 and 2. Neither soft links nor the file itself seemed to have an effect. I'm very confused. I doublechecked the file itself. All I did was add/delete some color tags and change colors about.
For clarity's sake here is the file.
custom.xml
<?xml version="1.0" encoding="UTF-8"?>
<style-scheme id="custom" _name="custom" version="1.0">
<author>MyName</author>
<_description>Dark color scheme.</_description>
<color name="green" value="#00FF00"/>
<color name="darkgreen" value="#008000"/>
<color name="red" value="#FF0000"/>
<color name="orange" value="#FF8000"/>
<color name="yellow" value="#FF0000"/>
<color name="blue" value="#0000FF"/>
<color name="lightblue" value="#00FFFF"/>
<color name="purple" value="#8080FF"/>
<color name="gray" value="#808080"/>
<color name="darkgray" value="#404040"/>
<color name="bggray" value="#202020"/>
<color name="purple" value="#8080FF"/>
<color name="white" value="#ffffff"/>
<!-- Global Settings -->
<style name="text" foreground="green" background="bggray"/>
<style name="selection" foreground="green" background="gray"/>
<style name="cursor" foreground="white" background="bggray"/>
<style name="secondary-cursor" foreground="darkgray" background="bggray"/>
<style name="current-line" background="gray"/>
<style name="line-numbers" foreground="yellow" background="#black"/>
<style name="draw-spaces" foreground="gray"/>
<style name="background-pattern" background="bggray"/>
<!-- Bracket Matching -->
<style name="bracket-match" foreground="yellow"/>
<style name="bracket-mismatch" foreground="yellow" background="red"/>
<!-- Right Margin -->
<style name="right-margin" foreground="gray" background="bggray"/>
<!-- Search Matching -->
<style name="search-match" background="orange"/>
<!-- Comments -->
<style name="def:comment" foreground="darkgreen"/>
<style name="def:shebang" foreground="darkgreen" bold="true"/>
<style name="def:doc-comment-element" italic="true"/>
<!-- Constants -->
<style name="def:constant" foreground="yellow"/>
<style name="def:string" foreground="yellow"/>
<style name="def:special-char" foreground="orange"/>
<style name="def:special-constant" foreground="orange"/>
<style name="def:floating-point" foreground="purple"/>
<!-- Identifiers -->
<style name="def:identifier" foreground="lightblue"/>
<!-- Statements -->
<style name="def:statement" foreground="green" bold="true"/>
<!-- Types -->
<style name="def:type" foreground="blue" bold="true"/>
<!-- Others -->
<style name="def:preprocessor" foreground="red"/>
<style name="def:error" foreground="red" background="orange" bold="true"/>
<style name="def:warning" foreground="yellow" background="orange" bold="true"/>
<style name="def:note" foreground="lightblue" background="bggray" bold="true"/>
<style name="def:underlined" italic="true" underline="single"/>
<!-- Heading styles, uncomment to enable -->
<!--
<style name="def:heading0" scale="5.0"/>
<style name="def:heading1" scale="2.5"/>
<style name="def:heading2" scale="2.0"/>
<style name="def:heading3" scale="1.7"/>
<style name="def:heading4" scale="1.5"/>
<style name="def:heading5" scale="1.3"/>
<style name="def:heading6" scale="1.2"/>
-->
<!-- Language specific -->
<style name="diff:added-line" foreground="darkgreen"/>
<style name="diff:removed-line" foreground="red"/>
<style name="diff:changed-line" foreground="yellow"/>
<style name="diff:diff-file" foreground="green" bold="true"/>
<style name="diff:location" foreground="green"/>
<style name="diff:special-case" foreground="white" bold="true"/>
<style name="latex:command" foreground="green" bold="true"/>
<style name="latex:include" use-style="def:preprocessor"/>
</style-scheme>
Edit 2:
I found these resources: https://developer.gnome.org/gtksourceview/stable/style-reference.html
But they don't detail which style names are valid. Or where to put the style file.
