Trait kas_core::layout::AutoLayout

source ·

pub trait AutoLayout {
    // Required methods
    fn size_rules(&mut self, sizer: SizeCx<'_>, axis: AxisInfo) -> SizeRules;
    fn set_rect(&mut self, cx: &mut ConfigCx<'_>, rect: Rect);
    fn find_id(&mut self, coord: Coord) -> Option<Id>;
    fn draw(&mut self, draw: DrawCx<'_>);
}

Expand description

Implementation generated by use of layout = .. property of #[widget]

This trait need not be implemented by the user, however it may be useful to adjust the result of an automatic implementation, for example:

use kas::prelude::*;

impl_scope! {
    #[widget {
        Data = ();
        layout = "Example";
    }]
    struct Example {
        core: widget_core!(),
    }
    impl Layout for Self {
        fn size_rules(&mut self, sizer: SizeCx, axis: AxisInfo) -> SizeRules {
            let mut rules = kas::layout::AutoLayout::size_rules(self, sizer, axis);
            rules.set_stretch(Stretch::High);
            rules
        }
    }
}