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use EventController;
use Gesture;
#[cfg(feature = "v3_14")]
use Widget;
use ffi;
use glib;
use glib::object::Downcast;
use glib::object::IsA;
#[cfg(feature = "v3_14")]
use glib::signal::connect;
use glib::translate::*;
#[cfg(feature = "v3_14")]
use glib_ffi;
use gobject_ffi;
#[cfg(feature = "v3_14")]
use libc;
#[cfg(feature = "v3_14")]
use std::boxed::Box as Box_;
#[cfg(feature = "v3_14")]
use std::mem::transmute;
glib_wrapper! {
pub struct GestureZoom(Object<ffi::GtkGestureZoom>): Gesture, EventController;
match fn {
get_type => || ffi::gtk_gesture_zoom_get_type(),
}
}
impl GestureZoom {
#[cfg(feature = "v3_14")]
pub fn new<P: IsA<Widget>>(widget: &P) -> GestureZoom {
skip_assert_initialized!();
unsafe {
Gesture::from_glib_full(ffi::gtk_gesture_zoom_new(widget.to_glib_none().0)).downcast_unchecked()
}
}
}
pub trait GestureZoomExt {
#[cfg(feature = "v3_14")]
fn get_scale_delta(&self) -> f64;
#[cfg(feature = "v3_14")]
fn connect_scale_changed<F: Fn(&Self, f64) + 'static>(&self, f: F) -> u64;
}
impl<O: IsA<GestureZoom> + IsA<glib::object::Object>> GestureZoomExt for O {
#[cfg(feature = "v3_14")]
fn get_scale_delta(&self) -> f64 {
unsafe {
ffi::gtk_gesture_zoom_get_scale_delta(self.to_glib_none().0)
}
}
#[cfg(feature = "v3_14")]
fn connect_scale_changed<F: Fn(&Self, f64) + 'static>(&self, f: F) -> u64 {
unsafe {
let f: Box_<Box_<Fn(&Self, f64) + 'static>> = Box_::new(Box_::new(f));
connect(self.to_glib_none().0, "scale-changed",
transmute(scale_changed_trampoline::<Self> as usize), Box_::into_raw(f) as *mut _)
}
}
}
#[cfg(feature = "v3_14")]
unsafe extern "C" fn scale_changed_trampoline<P>(this: *mut ffi::GtkGestureZoom, scale: libc::c_double, f: glib_ffi::gpointer)
where P: IsA<GestureZoom> {
callback_guard!();
let f: &Box_<Fn(&P, f64) + 'static> = transmute(f);
f(&GestureZoom::from_glib_none(this).downcast_unchecked(), scale)
}