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// This file was generated by gir (https://github.com/gtk-rs/gir)
// from gir-files (https://github.com/gtk-rs/gir-files)
// DO NOT EDIT

use EventController;
use Gesture;
use GestureSingle;
use Widget;
use ffi;
use glib::object::Cast;
use glib::object::IsA;
use glib::signal::SignalHandlerId;
use glib::signal::connect_raw;
use glib::translate::*;
use glib_ffi;
use libc;
use std::boxed::Box as Box_;
use std::fmt;
use std::mem;
use std::mem::transmute;

glib_wrapper! {
    pub struct GestureSwipe(Object<ffi::GtkGestureSwipe, ffi::GtkGestureSwipeClass, GestureSwipeClass>) @extends GestureSingle, Gesture, EventController;

    match fn {
        get_type => || ffi::gtk_gesture_swipe_get_type(),
    }
}

impl GestureSwipe {
    pub fn new<P: IsA<Widget>>(widget: &P) -> GestureSwipe {
        skip_assert_initialized!();
        unsafe {
            Gesture::from_glib_full(ffi::gtk_gesture_swipe_new(widget.as_ref().to_glib_none().0)).unsafe_cast()
        }
    }
}

pub const NONE_GESTURE_SWIPE: Option<&GestureSwipe> = None;

pub trait GestureSwipeExt: 'static {
    fn get_velocity(&self) -> Option<(f64, f64)>;

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

impl<O: IsA<GestureSwipe>> GestureSwipeExt for O {
    fn get_velocity(&self) -> Option<(f64, f64)> {
        unsafe {
            let mut velocity_x = mem::uninitialized();
            let mut velocity_y = mem::uninitialized();
            let ret = from_glib(ffi::gtk_gesture_swipe_get_velocity(self.as_ref().to_glib_none().0, &mut velocity_x, &mut velocity_y));
            if ret { Some((velocity_x, velocity_y)) } else { None }
        }
    }

    fn connect_swipe<F: Fn(&Self, f64, f64) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(self.as_ptr() as *mut _, b"swipe\0".as_ptr() as *const _,
                Some(transmute(swipe_trampoline::<Self, F> as usize)), Box_::into_raw(f))
        }
    }
}

unsafe extern "C" fn swipe_trampoline<P, F: Fn(&P, f64, f64) + 'static>(this: *mut ffi::GtkGestureSwipe, velocity_x: libc::c_double, velocity_y: libc::c_double, f: glib_ffi::gpointer)
where P: IsA<GestureSwipe> {
    let f: &F = transmute(f);
    f(&GestureSwipe::from_glib_borrow(this).unsafe_cast(), velocity_x, velocity_y)
}

impl fmt::Display for GestureSwipe {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "GestureSwipe")
    }
}