gtk/subclass/
button.rs

1// Take a look at the license at the top of the repository in the LICENSE file.
2
3use glib::subclass::prelude::*;
4use glib::translate::*;
5use glib::Cast;
6
7use super::bin::BinImpl;
8use crate::Button;
9
10pub trait ButtonImpl: ButtonImplExt + BinImpl {
11    fn activate(&self) {
12        self.parent_activate()
13    }
14
15    fn clicked(&self) {
16        self.parent_clicked()
17    }
18}
19
20mod sealed {
21    pub trait Sealed {}
22    impl<T: super::ButtonImpl> Sealed for T {}
23}
24
25pub trait ButtonImplExt: ObjectSubclass + sealed::Sealed {
26    fn parent_activate(&self) {
27        unsafe {
28            let data = Self::type_data();
29            let parent_class = data.as_ref().parent_class() as *mut ffi::GtkButtonClass;
30            if let Some(f) = (*parent_class).activate {
31                f(self.obj().unsafe_cast_ref::<Button>().to_glib_none().0)
32            }
33        }
34    }
35    fn parent_clicked(&self) {
36        unsafe {
37            let data = Self::type_data();
38            let parent_class = data.as_ref().parent_class() as *mut ffi::GtkButtonClass;
39            if let Some(f) = (*parent_class).clicked {
40                f(self.obj().unsafe_cast_ref::<Button>().to_glib_none().0)
41            }
42        }
43    }
44}
45
46impl<T: ButtonImpl> ButtonImplExt for T {}
47
48unsafe impl<T: ButtonImpl> IsSubclassable<T> for Button {
49    fn class_init(class: &mut glib::Class<Self>) {
50        Self::parent_class_init::<T>(class);
51
52        if !crate::rt::is_initialized() {
53            panic!("GTK has to be initialized first");
54        }
55
56        let klass = class.as_mut();
57        klass.activate = Some(button_activate::<T>);
58        klass.clicked = Some(button_clicked::<T>);
59    }
60}
61
62unsafe extern "C" fn button_activate<T: ButtonImpl>(ptr: *mut ffi::GtkButton) {
63    let instance = &*(ptr as *mut T::Instance);
64    let imp = instance.imp();
65
66    imp.activate()
67}
68
69unsafe extern "C" fn button_clicked<T: ButtonImpl>(ptr: *mut ffi::GtkButton) {
70    let instance = &*(ptr as *mut T::Instance);
71    let imp = instance.imp();
72
73    imp.clicked()
74}
gtk/subclass/button.rs

gtk/subclass/
button.rs
