Struct PanZoomView 

pub struct PanZoomView<State: 'static> { /* private fields */ }

A declarative pan/zoom container. See the module docs.

Implementations

impl<State: 'static> PanZoomView<State>

pub fn min_scale(self, scale: f64) -> Self

The smallest scale a zoom may reach (default DEFAULT_MIN_SCALE). Non-positive or non-finite values are ignored.

pub fn max_scale(self, scale: f64) -> Self

The largest scale a zoom may reach (default DEFAULT_MAX_SCALE). Non-positive or non-finite values are ignored.

pub fn inertia(self, inertia: bool) -> Self

Let a released pan glide to rest (default false).

pub fn on_transform<F: Fn(&mut State, PanZoomTransform) + 'static>( self, on_transform: F, ) -> Self

Run on_transform(state, transform) after every change to the transform (see the module docs).

pub fn controller(self, controller: PanZoomController) -> Self

Attach a PanZoomController.

Trait Implementations

impl<State: 'static> View<State> for PanZoomView<State>

type Element = PanZoomWidget

The retained widget this view produces.

fn build(&self, ctx: &mut BuildCtx<'_>) -> PanZoomWidget

Materialise a fresh widget for this view.

fn rebuild( &self, prev: &Self, element: &mut PanZoomWidget, ctx: &mut BuildCtx<'_>, ) -> ChangeFlags

Reconcile prev (the previous view of the same type) against the live element, mutating it in place and reporting what changed.

fn teardown(&self, element: &mut PanZoomWidget, ctx: &mut BuildCtx<'_>)

Tear down element when this view is being removed.

fn message(&self, _element: &mut Self::Element, _state: &mut State)

Deliver an event message to this view, mutating application state.