[−][src]Struct nannou::ui::widget::UpdateArgs
Arguments for the Widget::update method in a struct to simplify the method signature.
Fields
id: NodeIndex<u32>
The Widget's unique index.
maybe_parent_id: Option<NodeIndex<u32>>
The Widget's parent unique index, if there is one.
prev: &'a CommonState
The Widget's previous state. Specifically, the state that is common between all widgets, such as positioning, floatability, draggability, etc.
state: &'a mut State<'b, <W as Widget>::State>
A wrapper around the Widget's unique state, providing methods for both immutably viewing and mutably updating the state.
We wrap mutation in a method so that we can keep track of whether or not the unique state has been updated.
If State::update is called, we assume that there has been some mutation and in turn will require re-drawing the Widget. Thus, it is recommended that you only call State::update if you need to update the unique state in some way.
rect: Rect
The rectangle describing the Widget's area.
style: &'a <W as Widget>::Style
The Widget's current Widget::Style.
ui: &'c mut UiCell<'d>
Restricted access to the Ui
.
Provides methods for immutably accessing the Ui
's Theme
and GlyphCache
. Also allows
calling Widget::set
within the Widget::update
method.
Auto Trait Implementations
impl<'a, 'b, 'c, 'd, W> Send for UpdateArgs<'a, 'b, 'c, 'd, W> where
<W as Widget>::State: Send,
<W as Widget>::Style: Sync,
<W as Widget>::State: Send,
<W as Widget>::Style: Sync,
impl<'a, 'b, 'c, 'd, W> !Sync for UpdateArgs<'a, 'b, 'c, 'd, W>
Blanket Implementations
impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Content for T
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fn ref_from_ptr(ptr: *mut c_void, size: usize) -> Option<*mut T>
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fn is_size_suitable(size: usize) -> bool
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fn indiv_size() -> usize
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impl<T> SafeBorrow<T> for T
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impl<T> Erased for T
impl<S> FromSample<S> for S
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fn from_sample_(s: S) -> S
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impl<T, U> ToSample<U> for T where
U: FromSample<T>,
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U: FromSample<T>,
fn to_sample_(self) -> U
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impl<S, T> Duplex<S> for T where
T: FromSample<S> + ToSample<S>,
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T: FromSample<S> + ToSample<S>,
impl<T> SetParameter for T
fn set<T>(&mut self, value: T) -> <T as Parameter<Self>>::Result where
T: Parameter<Self>,
T: Parameter<Self>,
Sets value
as a parameter of self
.
impl<T> SetParameter for T
fn set<T>(&mut self, value: T) -> <T as Parameter<Self>>::Result where
T: Parameter<Self>,
T: Parameter<Self>,
Sets value
as a parameter of self
.