Add OTF Font in Xamarin.Forms

[donmesserli]

Is it possible to use a different OpenType font than the one included in the library without building the library from source? Are there calls my app can make to load and use a font? If so, can you provide instructions on how to do it?

[charlesroddie]

Yes see #20

[Happypig375]

@donmesserli Please respond if the referenced issue helped you 😀

[donmesserli]

I saw that question; but the answer is very terse. Can you provide a code snippet and tell me where in my application I need to call it?

[Happypig375]

CSharpMath.SkiaSharp.MathPainter painter = ...;
using (System.IO.Stream otf = ...)
    painter.LocalTypefaces.Add(new Typography.OpenFont.OpenFontReader().Read(otf));
//use painter as usual

[donmesserli]

I'm doing this in Xamarin.Forms. Not using a painter.

[charlesroddie]

Then try CSharpMath.Settings.GlobalTypefaces as described in the linked issue.
If this doesn't work let us know and we can reopen.

[donmesserli]

That's what I want to do; but I still need a code snippet.

[charlesroddie]

The code is as above with GlobalTypeFaces instead of painter.LocalTypefaces.

using (System.IO.Stream otf = System.IO.File.OpenRead fileName)
{
    CSharpMath.Settings.GlobalTypefaces.Add(new Typography.OpenFont.OpenFontReader().Read(otf));
}

Put this somewhere where it will be called when your app starts, i.e. before rendering happens.

[Happypig375]

Also applicable:

CSharpMath.Forms.MathView mathView = ...;
using (System.IO.Stream otf = ...)
    mathView.LocalTypefaces.Add(new Typography.OpenFont.OpenFontReader().Read(otf));

[Happypig375]

@donmesserli Please respond if the answers helped you 😃

[donmesserli]

Thank you! It was a lot of help.