More font mesurments :)

[Dzivo]

Feature request:

Hi guys i want to say first of all great work we have been using your library for some time and it works perfectly.
We have a feature sugestion you might be interested in.

It would be nice if we could align or at least get these mesurments from the TextMeasurer class

For me i would like to see Cap Height as well as X-height

[Dzivo]

@antonfirsov thx for the transfers this is maybe even for the Fonts library

[Dzivo]

Any news on this ?

[scalablecory]

In support of this feature, here's how I'm using the library now and what I'm attempting to do -- I'm trying to match the baseline of different font sizes:

Right now I'm just using a "fudge" number to get them to appear on the same line:
https://github.com/scalablecory/aether/blob/6df481eb006a4534c450b12e409655d4bf9aab6e/src/Aether/Devices/Displays/Themes/MultiLineTheme.cs#L92-L94

[JimBobSquarePants]

As of 1.0.0-beta16 we've added a ton of metrics to our FontMetrics and GlyphMetrics classes.

These are all given in font units and can be converted to the scaled values using the following formula.

pointsize * dpi / metrics.ScaleFactor

There's a few more that can be parsed directly from the font but I'd need help finishing things off.

[AndrewShepherd]

As somebody new to Fonts, I didn't know what measurements like AdvanceHeight or LeftSideBearing represented.

So I wrote a program to illustrate them. Here are some examples:

The bearing values can actually be negative.

An example of a glpyh with a negative left side bearing:

An example of a glyph with a negative right sight bearing:

[JimBobSquarePants]

@AndrewShepherd I don't know how I missed this excellent answer! Do you still have the code for this program? It would be VERY useful.!

[AndrewShepherd]

@JimBobSquarePants Sure, happy to share it.

https://github.com/AndrewShepherd/display-font-metrics