gtk4/
custom_filter.rs

1// Take a look at the license at the top of the repository in the LICENSE file.
2
3use std::ptr;
4
5use glib::translate::*;
6
7use crate::{ffi, CustomFilter};
8
9impl CustomFilter {
10    #[doc(alias = "gtk_custom_filter_new")]
11    pub fn new<F>(filter_func: F) -> Self
12    where
13        F: Fn(&glib::Object) -> bool + 'static,
14    {
15        assert_initialized_main_thread!();
16        unsafe {
17            from_glib_full(ffi::gtk_custom_filter_new(
18                Some(trampoline::<F>),
19                Box::into_raw(Box::new(filter_func)) as *mut _,
20                Some(destroy_closure::<F>),
21            ))
22        }
23    }
24
25    #[doc(alias = "gtk_custom_filter_set_filter_func")]
26    pub fn set_filter_func<F>(&self, filter_func: F)
27    where
28        F: Fn(&glib::Object) -> bool + 'static,
29    {
30        unsafe {
31            ffi::gtk_custom_filter_set_filter_func(
32                self.to_glib_none().0,
33                Some(trampoline::<F>),
34                Box::into_raw(Box::new(filter_func)) as *mut _,
35                Some(destroy_closure::<F>),
36            )
37        }
38    }
39
40    #[doc(alias = "gtk_custom_filter_set_filter_func")]
41    #[doc(alias = "set_filter_func")]
42    pub fn unset_filter_func(&self) {
43        unsafe {
44            ffi::gtk_custom_filter_set_filter_func(
45                self.to_glib_none().0,
46                None,
47                ptr::null_mut(),
48                None,
49            )
50        }
51    }
52}
53
54impl Default for CustomFilter {
55    fn default() -> Self {
56        assert_initialized_main_thread!();
57        unsafe { from_glib_full(ffi::gtk_custom_filter_new(None, ptr::null_mut(), None)) }
58    }
59}
60
61unsafe extern "C" fn destroy_closure<F: Fn(&glib::Object) -> bool + 'static>(
62    ptr: glib::ffi::gpointer,
63) {
64    let _ = Box::<F>::from_raw(ptr as *mut _);
65}
66
67unsafe extern "C" fn trampoline<F: Fn(&glib::Object) -> bool + 'static>(
68    item: *mut glib::gobject_ffi::GObject,
69    f: glib::ffi::gpointer,
70) -> glib::ffi::gboolean {
71    let f: &F = &*(f as *const F);
72    f(&from_glib_borrow(item)).into_glib()
73}
gtk4/custom_filter.rs

gtk4/
custom_filter.rs
