pub trait Renderer: Sized {
    type Theme;

    fn with_layer(&mut self, bounds: Rectangle, f: impl FnOnce(&mut Self));
    fn with_translation(&mut self, translation: Vector, f: impl FnOnce(&mut Self));
    fn fill_quad(&mut self, quad: Quad, background: impl Into<Background>);
    fn clear(&mut self);

    fn layout<Message>(
        &mut self,
        element: &Element<'_, Message, Self>,
        limits: &Limits
    ) -> Node { ... } }
Expand description

A component that can be used by widgets to draw themselves on a screen.

Required Associated Types§

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type Theme

The supported theme of the Renderer.

Required Methods§

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fn with_layer(&mut self, bounds: Rectangle, f: impl FnOnce(&mut Self))

Draws the primitives recorded in the given closure in a new layer.

The layer will clip its contents to the provided bounds.

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fn with_translation(&mut self, translation: Vector, f: impl FnOnce(&mut Self))

Applies a translation to the primitives recorded in the given closure.

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fn fill_quad(&mut self, quad: Quad, background: impl Into<Background>)

Fills a Quad with the provided Background.

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fn clear(&mut self)

Clears all of the recorded primitives in the Renderer.

Provided Methods§

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fn layout<Message>(
    &mut self,
    element: &Element<'_, Message, Self>,
    limits: &Limits
) -> Node

Lays out the elements of a user interface.

You should override this if you need to perform any operations before or after layouting. For instance, trimming the measurements cache.

Implementors§