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DragState

uzor_core::input::widget_state

Struct DragState 

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pub struct DragState {
    pub dragging: Option<WidgetId>,
    pub start_pos: (f64, f64),
    pub current_pos: (f64, f64),
    pub offset: (f64, f64),
    pub initial_value: f64,
}
Expand description

Widget drag state

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§dragging: Option<WidgetId>

Widget being dragged

§start_pos: (f64, f64)

Drag start position

§current_pos: (f64, f64)

Current drag position

§offset: (f64, f64)

Drag offset from widget origin

§initial_value: f64

Initial value when drag started (for sliders, scrollbars)

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impl DragState

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pub fn new() -> Self

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pub fn start( &mut self, id: WidgetId, x: f64, y: f64, offset_x: f64, offset_y: f64, )

Start dragging a widget

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pub fn start_with_value(&mut self, id: WidgetId, x: f64, y: f64, value: f64)

Start dragging with initial value

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pub fn update(&mut self, x: f64, y: f64)

Update drag position

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pub fn end(&mut self)

End dragging

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pub fn is_dragging(&self, id: &WidgetId) -> bool

Check if a widget is being dragged

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pub fn delta(&self) -> (f64, f64)

Get drag delta from start

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pub fn delta_from(&self, last_pos: (f64, f64)) -> (f64, f64)

Get drag delta from last frame

Trait Implementations§

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impl Clone for DragState

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fn clone(&self) -> DragState

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for DragState

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for DragState

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fn default() -> DragState

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
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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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.