Trait GestureDragExt 

pub trait GestureDragExt:
    IsA<GestureDrag>
    + Sealed
    + 'static {
    // Provided methods
    fn offset(&self) -> Option<(f64, f64)> { ... }
    fn start_point(&self) -> Option<(f64, f64)> { ... }
    fn connect_drag_begin<F: Fn(&Self, f64, f64) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId { ... }
    fn connect_drag_end<F: Fn(&Self, f64, f64) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId { ... }
    fn connect_drag_update<F: Fn(&Self, f64, f64) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId { ... }
}

Trait containing all GestureDrag methods.

Implementors

GestureDrag, GesturePan

Provided Methods

fn offset(&self) -> Option<(f64, f64)>

If the self is active, this function returns true and fills in x and y with the coordinates of the current point, as an offset to the starting drag point.

Returns

true if the gesture is active

x

X offset for the current point

y

Y offset for the current point

fn start_point(&self) -> Option<(f64, f64)>

If the self is active, this function returns true and fills in x and y with the drag start coordinates, in window-relative coordinates.

Returns

true if the gesture is active

x

X coordinate for the drag start point

y

Y coordinate for the drag start point

fn connect_drag_begin<F: Fn(&Self, f64, f64) + 'static>( &self, f: F, ) -> SignalHandlerId

This signal is emitted whenever dragging starts.

start_x

X coordinate, relative to the widget allocation

start_y

Y coordinate, relative to the widget allocation

fn connect_drag_end<F: Fn(&Self, f64, f64) + 'static>( &self, f: F, ) -> SignalHandlerId

This signal is emitted whenever the dragging is finished.

offset_x

X offset, relative to the start point

offset_y

Y offset, relative to the start point

fn connect_drag_update<F: Fn(&Self, f64, f64) + 'static>( &self, f: F, ) -> SignalHandlerId

This signal is emitted whenever the dragging point moves.

offset_x

X offset, relative to the start point

offset_y

Y offset, relative to the start point

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<O: IsA<GestureDrag>> GestureDragExt for O