gtk4/auto/constant_expression.rs
1// This file was generated by gir (https://github.com/gtk-rs/gir)
2// from gir-files (https://github.com/gtk-rs/gir-files)
3// DO NOT EDIT
4
5use crate::ffi;
6use glib::{prelude::*, translate::*};
7
8glib::wrapper! {
9 /// A constant value in a [`Expression`][crate::Expression].
10 #[doc(alias = "GtkConstantExpression")]
11 pub struct ConstantExpression(Shared<ffi::GtkConstantExpression>);
12
13 match fn {
14 ref => |ptr| ffi::gtk_expression_ref(ptr as *mut ffi::GtkExpression),
15 unref => |ptr| ffi::gtk_expression_unref(ptr as *mut ffi::GtkExpression),
16 }
17}
18
19impl StaticType for ConstantExpression {
20 fn static_type() -> glib::Type {
21 unsafe { from_glib(ffi::gtk_constant_expression_get_type()) }
22 }
23}
24
25impl ConstantExpression {
26 /// Creates an expression that always evaluates to the given `value`.
27 /// ## `value`
28 /// a `GValue`
29 ///
30 /// # Returns
31 ///
32 /// a new [`Expression`][crate::Expression]
33 #[doc(alias = "gtk_constant_expression_new_for_value")]
34 #[doc(alias = "new_for_value")]
35 pub fn for_value(value: &glib::Value) -> ConstantExpression {
36 assert_initialized_main_thread!();
37 unsafe {
38 from_glib_full(ffi::gtk_constant_expression_new_for_value(
39 value.to_glib_none().0,
40 ))
41 }
42 }
43
44 /// Gets the value that a constant expression evaluates to.
45 ///
46 /// # Returns
47 ///
48 /// the value
49 #[doc(alias = "gtk_constant_expression_get_value")]
50 #[doc(alias = "get_value")]
51 pub fn value(&self) -> glib::Value {
52 unsafe {
53 from_glib_none(ffi::gtk_constant_expression_get_value(
54 self.to_glib_none().0,
55 ))
56 }
57 }
58}