gtk/
fixed.rs

1// Take a look at the license at the top of the repository in the LICENSE file.
2
3use crate::Widget;
4use crate::{Fixed, ffi};
5use glib::object::IsA;
6use glib::translate::*;
7
8// All this is in order to avoid the segfault. More info in :
9// https://github.com/gtk-rs/gtk/issues/565
10fn has_widget<O: IsA<Fixed>, T: IsA<Widget>>(c: &O, item: &T) -> bool {
11    skip_assert_initialized!();
12    unsafe {
13        let glist = ffi::gtk_container_get_children(c.to_glib_none().0 as *mut _);
14        let found = !glib::ffi::g_list_find(glist, item.to_glib_none().0 as _).is_null();
15        glib::ffi::g_list_free(glist);
16        found
17    }
18}
19
20pub trait FixedExtManual: IsA<Fixed> + 'static {
21    #[doc(alias = "get_child_x")]
22    fn child_x<T: IsA<Widget>>(&self, item: &T) -> i32 {
23        assert!(
24            has_widget(self, item),
25            "this item isn't in the Fixed's widget list"
26        );
27        let mut value = glib::Value::from(&0);
28        unsafe {
29            ffi::gtk_container_child_get_property(
30                self.to_glib_none().0 as *mut _,
31                item.as_ref().to_glib_none().0,
32                "x".to_glib_none().0,
33                value.to_glib_none_mut().0,
34            );
35        }
36        value
37            .get()
38            .expect("Return Value for `FixedExtManual::get_child_x`")
39    }
40
41    fn set_child_x<T: IsA<Widget>>(&self, item: &T, x: i32) {
42        assert!(
43            has_widget(self, item),
44            "this item isn't in the Fixed's widget list"
45        );
46        unsafe {
47            ffi::gtk_container_child_set_property(
48                self.to_glib_none().0 as *mut _,
49                item.as_ref().to_glib_none().0,
50                "x".to_glib_none().0,
51                glib::Value::from(&x).to_glib_none().0,
52            );
53        }
54    }
55
56    #[doc(alias = "get_child_y")]
57    fn child_y<T: IsA<Widget>>(&self, item: &T) -> i32 {
58        assert!(
59            has_widget(self, item),
60            "this item isn't in the Fixed's widget list"
61        );
62        let mut value = glib::Value::from(&0);
63        unsafe {
64            ffi::gtk_container_child_get_property(
65                self.to_glib_none().0 as *mut _,
66                item.as_ref().to_glib_none().0,
67                "y".to_glib_none().0,
68                value.to_glib_none_mut().0,
69            );
70        }
71        value
72            .get()
73            .expect("Return Value for `FixedExtManual::get_child_y`")
74    }
75
76    fn set_child_y<T: IsA<Widget>>(&self, item: &T, y: i32) {
77        assert!(
78            has_widget(self, item),
79            "this item isn't in the Fixed's widget list"
80        );
81        unsafe {
82            ffi::gtk_container_child_set_property(
83                self.to_glib_none().0 as *mut _,
84                item.as_ref().to_glib_none().0,
85                "y".to_glib_none().0,
86                glib::Value::from(&y).to_glib_none().0,
87            );
88        }
89    }
90}
91
92impl<O: IsA<Fixed>> FixedExtManual for O {}
gtk/fixed.rs

gtk/
fixed.rs
