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)>

Gets the offset from the start point.

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)>

Gets the point where the drag started.

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

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

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

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", so this trait is not object safe.

Implementors

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