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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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@ -27,7 +27,7 @@ ScaledFont::ScaledFont(NonnullRefPtr<VectorFont> font, float point_width, float
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m_pixel_metrics = Gfx::FontPixelMetrics {
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.size = (float)pixel_size(),
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.x_height = (float)x_height(),
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.x_height = metrics.x_height,
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.advance_of_ascii_zero = (float)glyph_width('0'),
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.glyph_spacing = (float)glyph_spacing(),
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.ascent = metrics.ascender,
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