INNER CODE UNIT · Rust

fmt

plotters-rs/plotters · plotters-backend/src/lib.rs:89

    fn fmt(&self, fmt: &mut std::fmt::Formatter) -> Result<(), std::fmt::Error> {
        match self {
            DrawingErrorKind::DrawingError(e) => write!(fmt, "Drawing backend error: {}", e),
            DrawingErrorKind::FontError(e) => write!(fmt, "Font loading error: {}", e),
        }
    }
}

impl<E: Error + Send + Sync> Error for DrawingErrorKind<E> {}

///  The drawing backend trait, which implements the low-level drawing APIs.
///  This trait has a set of default implementation. And the minimal requirement of
///  implementing a drawing backend is implementing the `draw_pixel` function.
///
///  If the drawing backend supports vector graphics, the other drawing APIs should be
///  override by the backend specific implementation. Otherwise, the default implementation
///  will use the pixel-based approach to draw other types of low-level shapes.
pub trait DrawingBackend: Sized {

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