Makes it nicer for speaker icon to not move around on different volume
levels. Also remove scaling, it was not needed.
This required to rewrite the exclamation mark drawing code, made it look
similar to old icon now.
This uses Fluent UI System Icons [1] as a source for icons. The glyps
are generated using `TOOLS/gen-fluent-glyphs.py` script, which downloads
Icon and convert for our mpv font to use. Glyphs are vendored in our
repository to avoid external dependency.
Script could be extended to add more icons/variants easily, currently
only filled version are imported.
[1] https://github.com/microsoft/fluentui-system-icons
Taken from the last freely licensed version of Symbola and manually
adjusted the number in the glyph file to match the adjacent arrows.
Saving sfdir with fontforge also automatically removed the O flag from 2
existing glyphs. According to
https://fontforge.org/docs/techref/sfdformat.html "O" just meant "the
character was open when last saved", so it doesn't change anything
visible.
I was recently informed that unicode has official symbols for
window controls, and I put together a change to use them, which
worked, as long as a suitable font was installed. However, it's
not that hard to get a normal system that lacks an appropriate
font, and libass wants to print warnings if the symbols aren't
in the default font, which will almost always be true.
So, I gave up and added the symbols to the custom osd font that
we already have. This ensures they are always available, and
that they are aligned consistently on all platforms.
I took the symbols from the `symbola` font, as this has a suitable
licence and the symbols look nice enough.
Symbola Licence:
Fonts are free for any use; they may be opened, edited,
modified, regenerated, packaged and redistributed.
Finally, as we now have access to an un-maximize symbol, I added
logic to use it when the window is maximized.
Kacper Michajłow