add "material-nf" icon set, add icons_format config option

[MaxVerevkin]

With icons_format

icons = "material-nf"
icons_format = " <span size='large' stretch='ultraexpanded' font_family='NotoSans Nerd Font'>{icon}</span> "

Without icons_format

icons = "material-nf"

Font used

    font pango:JetBrainsMono Nerd Font 10.6

Related issues

• Add ability to define global pango markup wrappings #981
• material icon set renders invalid icons #1086

TODO

Do not apply icons_format for overridden icons? (Not possible with the current implementation of icons deserialization.)

• Rename icons_style to icons_format
• Write documentation
• Make use of more moon icons (for backlight block).
• Deprecate old material icon set?

[ammgws]

Are the Nerd Fonts mappings different than for the official Google material font? I imagine they would be the same if Nerd Fonts is just an aggregator?

[MaxVerevkin]

I checked google's codes and no, they are not the same. That's weird.

[ammgws]

Should icons_format be able to be overridden on a per-block basis like with themes?

[MaxVerevkin]

Should icons_format be able to be overridden on a per-block basis like with themes?

I'm not sure. I think that disabling icons_format for icons that were overridden is enough, but needs some more work. Actually, allowing each block to override icons_format it simpler. But current implementation of icons' deserialization is messy and should be refactored anyway. I mean, it uses one specific custom macro that is used just once.

[ammgws]

Actually, allowing each block to override icons_format it simpler.

Yeah it might be the way to go. Now too sure but might be useful if for example you wanted to specify some different icon font for the weather block? If it's trivial to implement then I don't really see any downside to allowing users to override it.

. But current implementation of icons' deserialization is messy and should be refactored anyway. I mean, it uses one specific custom macro that is used just once.

Sure

[MaxVerevkin]

Yeah it might be the way to go.

Done.

[ammgws]

Looks OK to me. As a last step I want to check the differences between the patched material font, the official Google one and the Nerd Fonts one.

Icon	Patched	Google	NerdFonts
bat_charging	\u{e1a3}	??	\u{f57d}
etc

[MaxVerevkin]

Actually, NerdFonts' README claims that they are using this material icons, not Google's - https://github.com/Templarian/MaterialDesign

Google's font has only one charging icon - battery_charging_full e1a3

I haven't found any icons that would "work" in any two of those fonts at the same time yet.

[ammgws]

Google Material Design icons
https://github.com/google/material-design-icons
https://aur.archlinux.org/packages/ttf-material-design-icons/

Material Design icons by MaterialDesignIcons.com (annoyingly they don't seem to mention Google anywhere)
https://github.com/Templarian/MaterialDesign
https://aur.archlinux.org/packages/ttf-material-design-icons-extended/

Nerd Fonts which includes MaterialDesignIcons.com, possibly patched but codepoints the same?
https://github.com/ryanoasis/nerd-fonts/blob/master/readme.md
https://aur.archlinux.org/packages/nerd-fonts-complete/

"Patched" icons from that gist
https://gist.github.com/draoncc/3c20d8d4262892ccd2e227eefeafa8ef/raw/3e6e12c213fba1ec28aaa26430c3606874754c30/MaterialIcons-Regular-for-inline.ttf

[MaxVerevkin]

possibly patched but codepoints the same?

From what I can tell, no, codepoints are different.

[ammgws]

Looks like it. Let's deal with it separately.

Thanks for this!