fn span_y(&self, span: &TextSpan) -> Result<u16> {
        let b = self.baseline(span)?;
        let h = span.height(self.fonts)?;
        debug_assert!(b >= h);
        Ok(b - h)
    }
/// Get the Y position of a text span.
Get the Y position of a text span.
Get the Y position of a text span .
fn span_y(&self, span: &TextSpan) -> Result<u16> {
        let b = self.baseline(span)?;
        let h = span.height(self.fonts)?;
        debug_assert!(b >= h);
        Ok(b - h)
    }
fn span_y ( & self , span : & TextSpan ) -> Result < u16 > { let b = self . baseline ( span ) ? ; let h = span . height ( self . fonts ) ? ; debug_assert ! ( b h ) ; Ok ( b - h ) }
Get the Y position of a text span.
Get the Y position of a text span .
&self
span
&TextSpan