Struct nannou::ui::widget::UpdateArgs [−][src]
pub struct UpdateArgs<'a, 'b, 'c, 'd, W> where
'b: 'a,
'd: 'c,
W: Widget, { pub id: NodeIndex<u32>, pub maybe_parent_id: Option<NodeIndex<u32>>, pub prev: &'a CommonState, pub state: &'a mut State<'b, <W as Widget>::State>, pub rect: Rect, pub style: &'a <W as Widget>::Style, pub ui: &'c mut UiCell<'d>, }
Expand description
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> !RefUnwindSafe for UpdateArgs<'a, 'b, 'c, 'd, W>
impl<'a, 'b, 'c, 'd, W> Send for UpdateArgs<'a, 'b, 'c, 'd, W> where
<W as Widget>::Style: Sync,
impl<'a, 'b, 'c, 'd, W> !Sync for UpdateArgs<'a, 'b, 'c, 'd, W>
impl<'a, 'b, 'c, 'd, W> Unpin for UpdateArgs<'a, 'b, 'c, 'd, W> where
'b: 'a,
'd: 'c,
impl<'a, 'b, 'c, 'd, W> !UnwindSafe for UpdateArgs<'a, 'b, 'c, 'd, W>
Blanket Implementations
impl<S, D, Swp, Dwp, T> AdaptInto<D, Swp, Dwp, T> for S where
T: Component + Float,
D: AdaptFrom<S, Swp, Dwp, T>,
Swp: WhitePoint,
Dwp: WhitePoint,
impl<S, D, Swp, Dwp, T> AdaptInto<D, Swp, Dwp, T> for S where
T: Component + Float,
D: AdaptFrom<S, Swp, Dwp, T>,
Swp: WhitePoint,
Dwp: WhitePoint,
Mutably borrows from an owned value. Read more
Convert into T with values clamped to the color defined bounds Read more
Convert into T. The resulting color might be invalid in its color space Read more
Convert into T, returning ok if the color is inside of its defined range,
otherwise an OutOfBounds
error is returned which contains the unclamped color. Read more
pub fn vzip(self) -> V