Trait gtk4::prelude::GestureDragExt

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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 { ... }
}
Expand description

Trait containing all GestureDrag methods.

§Implementors

GestureDrag, GesturePan

Provided Methods§

source

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

source

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

source

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

source

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

source

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

Object Safety§

This trait is not object safe.

Implementors§