lerp method

@override TextStyle lerp(double t)

lerp return a value between begin and end

Implementation

@override
TextStyle lerp(double t) => TextStyle(
      inherit: end.inherit,
      color: begin.foreground == null && end.foreground == null
          ? Color.lerp(begin.color, end.color, t)
          : null,
      backgroundColor: begin.background == null && end.background == null
          ? Color.lerp(begin.backgroundColor, end.backgroundColor, t)
          : null,
      fontFamily: t < 0.5 ? begin.fontFamily : end.fontFamily,
      fontFamilyFallback:
          t < 0.5 ? begin.fontFamilyFallback : end.fontFamilyFallback,
      fontSize: ui.lerpDouble(
          begin.fontSize ?? end.fontSize, end.fontSize ?? begin.fontSize, t),
      fontWeight: FontWeight.lerp(begin.fontWeight, end.fontWeight, t),
      fontStyle: t < 0.5 ? begin.fontStyle : end.fontStyle,
      letterSpacing: ui.lerpDouble(begin.letterSpacing ?? end.letterSpacing,
          end.letterSpacing ?? begin.letterSpacing, t),
      wordSpacing: ui.lerpDouble(begin.wordSpacing ?? end.wordSpacing,
          end.wordSpacing ?? begin.wordSpacing, t),
      textBaseline: t < 0.5 ? begin.textBaseline : end.textBaseline,
      height: ui.lerpDouble(
          begin.height ?? end.height, end.height ?? begin.height, t),
      locale: t < 0.5 ? begin.locale : end.locale,
      foreground: (begin.foreground != null || end.foreground != null)
          ? t < 0.5
              ? begin.foreground ?? (Paint()..color = begin.color!)
              : end.foreground ?? (Paint()..color = end.color!)
          : null,
      background: (begin.background != null || end.background != null)
          ? t < 0.5
              ? begin.background ?? (Paint()..color = begin.backgroundColor!)
              : end.background ?? (Paint()..color = end.backgroundColor!)
          : null,
      shadows: t < 0.5 ? begin.shadows : end.shadows,
      fontFeatures: t < 0.5 ? begin.fontFeatures : end.fontFeatures,
      decoration: t < 0.5 ? begin.decoration : end.decoration,
      decorationColor:
          Color.lerp(begin.decorationColor, end.decorationColor, t),
      decorationStyle: t < 0.5 ? begin.decorationStyle : end.decorationStyle,
      decorationThickness: ui.lerpDouble(
          begin.decorationThickness ?? end.decorationThickness,
          end.decorationThickness ?? begin.decorationThickness,
          t),
      //!
      /// debugLabel as `_kDefaultDebugLabel` from `text_style.dart`
      debugLabel: 'unknown',
    );