Struct zng::style::StyleMix

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pub struct StyleMix<P>(/* private fields */);
Expand description

m Styleable widget mixin.

Widgets that inherit this mix-in have a style_fn property that can be set to a style_fn! that generates properties that are dynamically injected into the widget to alter its appearance.

The style mixin drastically affects the widget build process, only the style_base_fn, style_fn and when condition properties that affects these are instantiated with the widget, all the other properties and intrinsic nodes are instantiated on init, after the style is generated.

Widgets that inherit this mix-in must call style_intrinsic in their own widget_intrinsic, the call is missing the widget will log an error on instantiation and only the style_base_fn will be used. You can use the impl_style_fn! macro to generate the style var and property.

Implementations§

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impl<P> StyleMix<P>
where P: WidgetImpl,

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pub fn style_intrinsic( &mut self, style_var: ContextVar<StyleFn>, style_fn: PropertyId, )

Setup the style build.

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impl<P> StyleMix<P>

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pub fn custom_build( wgt: WidgetBuilder, cfg: Option<(ContextVar<StyleFn>, PropertyId)>, ) -> Box<dyn UiNodeBoxed>

The custom build that is set on intrinsic by the mixin.

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impl<P> StyleMix<P>
where P: WidgetImpl,

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pub fn style_base_fn(&self, style: impl IntoVar<StyleFn>)

c Widget’s base style. All other styles set using style_fn are applied over this style.

Is nil by default.

Trait Implementations§

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impl<P> Deref for StyleMix<P>

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type Target = P

The resulting type after dereferencing.
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fn deref(&self) -> &<StyleMix<P> as Deref>::Target

Dereferences the value.
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impl<P> DerefMut for StyleMix<P>

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fn deref_mut(&mut self) -> &mut <StyleMix<P> as Deref>::Target

Mutably dereferences the value.

Auto Trait Implementations§

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impl<P> Freeze for StyleMix<P>
where P: Freeze,

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impl<P> RefUnwindSafe for StyleMix<P>
where P: RefUnwindSafe,

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impl<P> Send for StyleMix<P>
where P: Send,

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impl<P> Sync for StyleMix<P>
where P: Sync,

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impl<P> Unpin for StyleMix<P>
where P: Unpin,

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impl<P> UnwindSafe for StyleMix<P>
where P: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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Gets the TypeId of self. Read more
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where T: ?Sized,

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Immutably borrows from an owned value. Read more
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where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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where T: Any,

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Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.
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Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.
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Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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