Trait ShapeStyleArg

Source

pub trait ShapeStyleArg {
    // Required method
    fn foreground_style(self, view: View) -> View;
}

Expand description

Anything foregroundStyle accepts — Swift’s some ShapeStyle.

Implemented rather than derived, because each one reaches a different binding; adding a style is one impl.

§Leading dots do not work here

.foreground_style(.blue) does not compile, and cannot. A leading dot lowers to Into::into(dot::Blue), which needs a concrete expected type to resolve against; a generic parameter gives it none, and Rust will not search impls backwards to find the one type that is both From<dot::Blue> and ShapeStyleArg. Name the style — SystemColor::Blue — or use a modifier whose parameter is that one type, such as foreground_style_hierarchical.