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use EventController;
use Gesture;
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::transmute;
glib_wrapper! {
pub struct GestureZoom(Object<ffi::GtkGestureZoom, ffi::GtkGestureZoomClass, GestureZoomClass>) @extends Gesture, EventController;
match fn {
get_type => || ffi::gtk_gesture_zoom_get_type(),
}
}
impl GestureZoom {
pub fn new<P: IsA<Widget>>(widget: &P) -> GestureZoom {
skip_assert_initialized!();
unsafe {
Gesture::from_glib_full(ffi::gtk_gesture_zoom_new(widget.as_ref().to_glib_none().0)).unsafe_cast()
}
}
}
pub const NONE_GESTURE_ZOOM: Option<&GestureZoom> = None;
pub trait GestureZoomExt: 'static {
fn get_scale_delta(&self) -> f64;
fn connect_scale_changed<F: Fn(&Self, f64) + 'static>(&self, f: F) -> SignalHandlerId;
}
impl<O: IsA<GestureZoom>> GestureZoomExt for O {
fn get_scale_delta(&self) -> f64 {
unsafe {
ffi::gtk_gesture_zoom_get_scale_delta(self.as_ref().to_glib_none().0)
}
}
fn connect_scale_changed<F: Fn(&Self, f64) + 'static>(&self, f: F) -> SignalHandlerId {
unsafe {
let f: Box_<F> = Box_::new(f);
connect_raw(self.as_ptr() as *mut _, b"scale-changed\0".as_ptr() as *const _,
Some(transmute(scale_changed_trampoline::<Self, F> as usize)), Box_::into_raw(f))
}
}
}
unsafe extern "C" fn scale_changed_trampoline<P, F: Fn(&P, f64) + 'static>(this: *mut ffi::GtkGestureZoom, scale: libc::c_double, f: glib_ffi::gpointer)
where P: IsA<GestureZoom> {
let f: &F = transmute(f);
f(&GestureZoom::from_glib_borrow(this).unsafe_cast(), scale)
}
impl fmt::Display for GestureZoom {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "GestureZoom")
}
}