input::ffi

Function libinput_event_touch_get_y

pub unsafe extern "C" fn libinput_event_touch_get_y(
    event: *mut libinput_event_touch,
) -> f64
Expand description

@ingroup event_touch

Return the current absolute y coordinate of the touch event, in mm from the top left corner of the device. To get the corresponding output screen coordinate, use libinput_event_touch_get_y_transformed().

For events not of type @ref LIBINPUT_EVENT_TOUCH_DOWN, @ref LIBINPUT_EVENT_TOUCH_MOTION, this function returns 0.

@note It is an application bug to call this function for events of type other than @ref LIBINPUT_EVENT_TOUCH_DOWN or @ref LIBINPUT_EVENT_TOUCH_MOTION.

@param event The libinput touch event @return The current absolute y coordinate