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DeviceExtManual

gdk::prelude

Trait DeviceExtManual 

Source 
pub trait DeviceExtManual:
    IsA<Device>
    + Sealed
    + 'static {
    // Provided methods
    fn is_axis(&self, axes: &mut [f64], use_: AxisUse, value: &mut f64) -> bool { ... }
    fn history<P: IsA<Window>>(
        &self,
        window: &P,
        start: u32,
        stop: u32,
    ) -> Vec<TimeCoord> { ... }
}

Provided Methods§

Source

fn is_axis(&self, axes: &mut [f64], use_: AxisUse, value: &mut f64) -> bool

Source

fn history<P: IsA<Window>>( &self, window: &P, start: u32, stop: u32, ) -> Vec<TimeCoord>

Obtains the motion history for a pointer device; given a starting and ending timestamp, return all events in the motion history for the device in the given range of time. Some windowing systems do not support motion history, in which case, false will be returned. (This is not distinguishable from the case where motion history is supported and no events were found.)

Note that there is also Window::set_event_compression() to get more motion events delivered directly, independent of the windowing system.

§window

the window with respect to which which the event coordinates will be reported

§start

starting timestamp for range of events to return

§stop

ending timestamp for the range of events to return

§Returns

true if the windowing system supports motion history and at least one event was found.

§events

location to store a newly-allocated array of TimeCoord, or None

Dyn Compatibility§

This trait is not dyn compatible.

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

Implementors§