1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
// This file was generated by gir (https://github.com/gtk-rs/gir)
// from gir-files (https://github.com/gtk-rs/gir-files)
// DO NOT EDIT

use crate::Display;
use glib::object::IsA;
use glib::object::ObjectType as ObjectType_;
use glib::signal::connect_raw;
use glib::signal::SignalHandlerId;
use glib::translate::*;
use std::boxed::Box as Box_;
use std::fmt;
use std::mem::transmute;

glib::wrapper! {
    /// A singleton object that offers notification when displays appear or
    /// disappear.
    ///
    /// You can use [`get()`][Self::get()] to obtain the [`DisplayManager`][crate::DisplayManager]
    /// singleton, but that should be rarely necessary. Typically, initializing
    /// GTK opens a display that you can work with without ever accessing the
    /// [`DisplayManager`][crate::DisplayManager].
    ///
    /// The GDK library can be built with support for multiple backends.
    /// The [`DisplayManager`][crate::DisplayManager] object determines which backend is used
    /// at runtime.
    ///
    /// In the rare case that you need to influence which of the backends
    /// is being used, you can use [`set_allowed_backends()`][crate::set_allowed_backends()]. Note
    /// that you need to call this function before initializing GTK.
    ///
    /// ## Backend-specific code
    ///
    /// When writing backend-specific code that is supposed to work with
    /// multiple GDK backends, you have to consider both compile time and
    /// runtime. At compile time, use the `GDK_WINDOWING_X11`, `GDK_WINDOWING_WIN32`
    /// macros, etc. to find out which backends are present in the GDK library
    /// you are building your application against. At runtime, use type-check
    /// macros like GDK_IS_X11_DISPLAY() to find out which backend is in use:
    ///
    /// **⚠️ The following code is in c ⚠️**
    ///
    /// ```c
    /// #ifdef GDK_WINDOWING_X11
    ///   if (GDK_IS_X11_DISPLAY (display))
    ///     {
    ///       // make X11-specific calls here
    ///     }
    ///   else
    /// #endif
    /// #ifdef GDK_WINDOWING_MACOS
    ///   if (GDK_IS_MACOS_DISPLAY (display))
    ///     {
    ///       // make Quartz-specific calls here
    ///     }
    ///   else
    /// #endif
    ///   g_error ("Unsupported GDK backend");
    /// ```
    #[doc(alias = "GdkDisplayManager")]
    pub struct DisplayManager(Object<ffi::GdkDisplayManager>);

    match fn {
        type_ => || ffi::gdk_display_manager_get_type(),
    }
}

impl DisplayManager {
    /// Gets the default [`Display`][crate::Display].
    ///
    /// # Returns
    ///
    /// a [`Display`][crate::Display]
    #[doc(alias = "gdk_display_manager_get_default_display")]
    #[doc(alias = "get_default_display")]
    pub fn default_display(&self) -> Option<Display> {
        unsafe {
            from_glib_none(ffi::gdk_display_manager_get_default_display(
                self.to_glib_none().0,
            ))
        }
    }

    /// List all currently open displays.
    ///
    /// # Returns
    ///
    /// a newly
    ///   allocated `GSList` of [`Display`][crate::Display] objects
    #[doc(alias = "gdk_display_manager_list_displays")]
    pub fn list_displays(&self) -> Vec<Display> {
        unsafe {
            FromGlibPtrContainer::from_glib_container(ffi::gdk_display_manager_list_displays(
                self.to_glib_none().0,
            ))
        }
    }

    /// Opens a display.
    /// ## `name`
    /// the name of the display to open
    ///
    /// # Returns
    ///
    /// a [`Display`][crate::Display], or [`None`]
    ///   if the display could not be opened
    #[doc(alias = "gdk_display_manager_open_display")]
    pub fn open_display(&self, name: &str) -> Option<Display> {
        unsafe {
            from_glib_none(ffi::gdk_display_manager_open_display(
                self.to_glib_none().0,
                name.to_glib_none().0,
            ))
        }
    }

    /// Sets @display as the default display.
    /// ## `display`
    /// a [`Display`][crate::Display]
    #[doc(alias = "gdk_display_manager_set_default_display")]
    pub fn set_default_display(&self, display: &impl IsA<Display>) {
        unsafe {
            ffi::gdk_display_manager_set_default_display(
                self.to_glib_none().0,
                display.as_ref().to_glib_none().0,
            );
        }
    }

    /// Gets the singleton [`DisplayManager`][crate::DisplayManager] object.
    ///
    /// When called for the first time, this function consults the
    /// `GDK_BACKEND` environment variable to find out which of the
    /// supported GDK backends to use (in case GDK has been compiled
    /// with multiple backends).
    ///
    /// Applications can use [`set_allowed_backends()`][crate::set_allowed_backends()] to limit what
    /// backends will be used.
    ///
    /// # Returns
    ///
    /// The global [`DisplayManager`][crate::DisplayManager] singleton
    #[doc(alias = "gdk_display_manager_get")]
    pub fn get() -> DisplayManager {
        assert_initialized_main_thread!();
        unsafe { from_glib_none(ffi::gdk_display_manager_get()) }
    }

    /// Emitted when a display is opened.
    /// ## `display`
    /// the opened display
    #[doc(alias = "display-opened")]
    pub fn connect_display_opened<F: Fn(&Self, &Display) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn display_opened_trampoline<
            F: Fn(&DisplayManager, &Display) + 'static,
        >(
            this: *mut ffi::GdkDisplayManager,
            display: *mut ffi::GdkDisplay,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this), &from_glib_borrow(display))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"display-opened\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    display_opened_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "default-display")]
    pub fn connect_default_display_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_default_display_trampoline<F: Fn(&DisplayManager) + 'static>(
            this: *mut ffi::GdkDisplayManager,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::default-display\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_default_display_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }
}

impl fmt::Display for DisplayManager {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        f.write_str("DisplayManager")
    }
}