isColorGlyph predicate

Glyphs
1

The tokes tutorial has $[isColorGlyph == true] but if I use it I get an error:

Invalid glyph class predicate “$[isColorGlyph == true]”
2

That’s a typo. It should be isAnyColorGlyph which covers any of the color glyph types. There are also more specifically:

  • isFullColorGlyph (as used for SVG, PDF, and bitmap images)
  • isColorPaletteGlyph (COLR/CPAL)
  • isSVGColorGlyph (contains SVG image file)
  • isAppleColorGlyph (sbix)
3

Thanks. It would be nice to have a complete list of the predicates in the handbook. I’m trying to add a few more to glyphsLib.

4

You can find a copy of the available symbols in the headers that ship with Glyphs:

Glyphs 3.app/Contents/Frameworks/GlyphsCore.framework/Headers/GSGlyph.h

These just check whether any of the layers returns YES/true for the same symbols.

Glyphs 3.app/Contents/Frameworks/GlyphsCore.framework/Headers/GSLayer.h

Usable from a predicate are methods without parameters:

- (type_name)symbol_name;

and properties:

@property (..., getter=getter_symbol_name) type_name symbol_name;

When there is a getter, use its symbol.

We have renewed API docs in the works, that should be easier to reference.

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5

Thanks. Having this listed somewhere that can be linked to would be helpful when as a documentation. Not everyone using/hacking glyphsLib has access to Glyphs app.

6

Certainly, I’m working on the docs. Everyone can download Glyphs and inspect the headers, regardless of license or OS.

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