text: Fix getCharBoundaries() for 0-width characters
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kjarosh
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adrian17
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Dec 9, 2024
core/src/font.rs
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| @@ -613,6 +619,9 @@ impl<'gc> Font<'gc> { | |||
| // Step horizontally. | |||
| transform.matrix.tx += twips_advance; | |||
| x += twips_advance; | |||
| } else { | |||
| // No glyph, zero advance | |||
| glyph_func(pos, &transform, &Glyph::empty(), Twips::ZERO, x); | |||
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What's the difference between processing a "noop" glyph and skipping it entirely?
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I've described it in my commit message:
This is a natural assumption of Font::evaluate and makes writing code easier.
Code that renders glyphs will work the same way as non-renderable characters
will produce empty glyphs, but code that evaluates the font for measurement
purposes will use this property.
I'll add a short comment about it here too.
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adrian17
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Jan 4, 2025
This is a natural assumption of Font::evaluate and makes writing code easier. Code that renders glyphs will work the same way as non-renderable characters will produce empty glyphs, but code that evaluates the font for measurement purposes will use this property.
This test verifies how getCharBoundaries() works when glyphs are missing.
This test verifies how getCharBoundaries() works when glyphs are missing due to embedded font not being present.
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Basically,
getCharBoundaries()returns null for 0-width characters. This PR also fixes a bug where some characters (with missing glyphs) were not taken into account properly becauseFont::evaluateskipped them.