BLFontFeatureItem Struct Reference

Associates a font feature tag with a value. Tag describes the feature (as provided by the font) and value describes its value. Some features only allow boolean values 0 and 1 and some allow values up to 65535. Values above 65535 are invalid, however, only BL_FONT_FEATURE_INVALID_VALUE should be used as invalid value in general.

Registered OpenType features:

• https://docs.microsoft.com/en-us/typography/opentype/spec/featuretags
• https://helpx.adobe.com/typekit/using/open-type-syntax.html

Public Members

Members

BLTag tag

uint32_t value

Member Functions

Common Functionality

void reset()

Member Data Documentation

BLTag BLFontFeatureItem::tag

Feature tag (32-bit).

uint32_t BLFontFeatureItem::value

Feature value.

Note

values greater than 65535 are invalid.