Add isStroked overload for IGeometryContext

[emmauss]

What does the pull request do?

Reopens this PR #12617

What is the current behavior?

What is the updated/expected behavior with this PR?

How was the solution implemented (if it's not obvious)?

Checklist

• Added unit tests (if possible)?
• Added XML documentation to any related classes?
• Consider submitting a PR to https://github.com/AvaloniaUI/avalonia-docs with user documentation

Breaking changes

Obsoletions / Deprecations

Fixed issues

[avaloniaui-bot]

You can test this PR using the following package version. 11.2.999-cibuild0047444-alpha. (feed url: https://nuget-feed-all.avaloniaui.net/v3/index.json) [PRBUILDID]

[avaloniaui-bot]

You can test this PR using the following package version. 11.2.999-cibuild0047493-alpha. (feed url: https://nuget-feed-all.avaloniaui.net/v3/index.json) [PRBUILDID]

[kekekeks]

Does it handle closed geometries properly? Last time we've discovered that simple MoveTo isn't enough

[kekekeks]

It's a bit more complicated than we've thought, simple MoveTo would break closed paths since Skia interprets MoveTo as a new figure.

So if we want to close a figure with holes, we need to prepend the last continuous segment at the start of said figure and replace the initial MoveTo with LineTo.

c.BeginFigure(new Point(40,10), true, true);
c.LineTo(new Point(50, 10), true, true);
c.LineTo(new Point(50, 20), false, true);
c.Close();

[emmauss]

Does it handle closed geometries properly? Last time we've discovered that simple MoveTo isn't enough

Yes, it does.

[kekekeks]

Can we have some render tests? Preferably using CrossTest kit for WPF comparison.

[emmauss]

Added test

[jmacato]

@cla-avalonia recheck

[cla-avalonia]

• All contributors have signed the CLA.

[avaloniaui-bot]

You can test this PR using the following package version. 11.2.999-cibuild0047754-alpha. (feed url: https://nuget-feed-all.avaloniaui.net/v3/index.json) [PRBUILDID]

[emmauss]

@cla-avalonia agree