Add hitUnstrokedPaths option to hit tests

[adroitwhiz]

Description

In order to add outline support to the fill tool, there needs to be an option to hit "invisible" outlines.

Otherwise, if you set the fill color to transparent, then hover over a path's outline:

• The hit test will match the outline
• It'll set the outline to transparent
• Because the outline is transparent, hit tests won't match it
• Next time you move the mouse slightly, the hit test will match the fill
• It'll set the fill to transparent and set the outline to whatever color it was before
• The hit test will match the outline, and the process repeats...

It involves a lot of flickering so I won't post a GIF here.

CompoundPath._hitTestChildren isn't affected because it only ever disabled checking for fill, and hence was only affected by hitUnfilledPaths.

PointText._hitTestSelf isn't affected because you can't hit test outlines on text :(

Related issues

• Relates to Gradient outlines vector scratch-paint#540
• Relates to Implement gradient outlines scratch-paint#1004

Checklist

• New tests added or existing tests modified to cover all changes
  • Tested manually
• Code conforms with the JSHint rules (npm run jshint passes)

[fsih]

LG!