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Trait PanActionExt

Source 
pub trait PanActionExt: 'static {

Show 17 methods    // Required methods
    fn get_acceleration_factor(&self) -> f64;
    fn get_constrained_motion_delta(&self, point: u32) -> (f32, f32, f32);
    fn get_deceleration(&self) -> f64;
    fn get_interpolate(&self) -> bool;
    fn get_interpolated_coords(&self) -> (f32, f32);
    fn get_interpolated_delta(&self) -> (f32, f32, f32);
    fn get_pan_axis(&self) -> PanAxis;
    fn set_acceleration_factor(&self, factor: f64);
    fn set_deceleration(&self, rate: f64);
    fn set_interpolate(&self, should_interpolate: bool);
    fn set_pan_axis(&self, axis: PanAxis);
    fn connect_pan<F: Fn(&Self, &Actor, bool) -> bool + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId;
    fn connect_pan_stopped<F: Fn(&Self, &Actor) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId;
    fn connect_property_acceleration_factor_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId;
    fn connect_property_deceleration_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId;
    fn connect_property_interpolate_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId;
    fn connect_property_pan_axis_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId;

}
Expand description

Trait containing all PanAction methods.

§Implementors

PanAction

Required Methods§

Source

fn get_acceleration_factor(&self) -> f64

Retrieves the initial acceleration factor for interpolated ::pan events.

§Returns

The initial acceleration factor for interpolated events.

Source

fn get_constrained_motion_delta(&self, point: u32) -> (f32, f32, f32)

Retrieves the delta, in stage space, dependent on the current state of the PanAction, and respecting the constraint specified by the PanAction:pan-axis property.

§point

the touch point index, with 0 being the first touch point received by the action

§delta_x

return location for the X delta

§delta_y

return location for the Y delta

§Returns

the distance since last motion event

Source

fn get_deceleration(&self) -> f64

Retrieves the deceleration rate of interpolated ::pan events.

§Returns

The deceleration rate of the interpolated events.

Source

fn get_interpolate(&self) -> bool

Checks if the action should emit ::pan events even after releasing the pointer during a panning gesture, to emulate some kind of kinetic inertia.

§Returns

true if interpolated events emission is active.

Source

fn get_interpolated_coords(&self) -> (f32, f32)

Retrieves the coordinates, in stage space, of the latest interpolated event, analogous to GestureActionExt::get_motion_coords.

§interpolated_x

return location for the latest interpolated event’s X coordinate

§interpolated_y

return location for the latest interpolated event’s Y coordinate

Source

fn get_interpolated_delta(&self) -> (f32, f32, f32)

Retrieves the delta, in stage space, since the latest interpolated event, analogous to GestureActionExt::get_motion_delta.

§delta_x

return location for the X delta since the latest interpolated event

§delta_y

return location for the Y delta since the latest interpolated event

§Returns

the distance since the latest interpolated event

Source

fn get_pan_axis(&self) -> PanAxis

Retrieves the axis constraint set by PanActionExt::set_pan_axis

§Returns

the axis constraint

Source

fn set_acceleration_factor(&self, factor: f64)

Factor applied to the momentum velocity at the time of releasing the pointer when generating interpolated ::pan events.

§factor

The acceleration factor

Source

fn set_deceleration(&self, rate: f64)

Sets the deceleration rate of the interpolated ::pan events generated after a pan gesture. This is approximately the value that the momentum at the time of releasing the pointer is divided by every 60th of a second.

§rate

The deceleration rate

Source

fn set_interpolate(&self, should_interpolate: bool)

Sets whether the action should emit interpolated ::pan events after the drag has ended, to emulate the gesture kinetic inertia.

§should_interpolate

whether to enable interpolated pan events

Source

fn set_pan_axis(&self, axis: PanAxis)

Restricts the panning action to a specific axis

§axis

the axis to constraint the panning to

Source

fn connect_pan<F: Fn(&Self, &Actor, bool) -> bool + 'static>( &self, f: F, ) -> SignalHandlerId

The ::pan signal is emitted to keep track of the motion during a pan gesture. is_interpolated is set to true during the interpolation phase of the pan, after the drag has ended and the :interpolate property was set to true.

§actor

the Actor attached to the action

§is_interpolated

if the event is the result of interpolating the motion velocity at the end of the drag

§Returns

true if the pan should continue, and false if the pan should be cancelled.

Source

fn connect_pan_stopped<F: Fn(&Self, &Actor) + 'static>( &self, f: F, ) -> SignalHandlerId

The ::pan-stopped signal is emitted at the end of the interpolation phase of the pan action, only when :interpolate is set to true.

§actor

the Actor attached to the action

Source

fn connect_property_acceleration_factor_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

Source

fn connect_property_deceleration_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

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fn connect_property_interpolate_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

Source

fn connect_property_pan_axis_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§