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LibGfx/OpenType: Load x-height metrics from OS/2 table if available
Before this change we always returned the font's point size as the x-height which was basically never correct. We now get it from the OS/2 table (if one with version >= 2 is available in the file). Otherwise we fall back to using the ascent of the 'x' glyph. Most fonts appear to have a sufficiently modern OS/2 table.
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6 changed files with 50 additions and 1 deletions
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@ -17,6 +17,7 @@ struct ScaledFontMetrics {
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float ascender { 0 };
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float descender { 0 };
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float line_gap { 0 };
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float x_height { 0 };
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float height() const
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{
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