xlib-display-server 0.1.0

A display server library for LeftWM
Documentation 
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
209
210
211
212
213
214
215
216
217
218
219
220
221

//! `XWrap` setters.
use super::WindowHandle;
use crate::XWrap;
use leftwm_core::models::TagId;
use std::ffi::CString;
use std::os::raw::{c_long, c_ulong};
use x11_dl::xlib;

impl XWrap {
    // Public functions.

    /// Appends a window property.
    // `XChangeProperty`: https://tronche.com/gui/x/xlib/window-information/XChangeProperty.html
    pub fn append_property_long(
        &self,
        window: xlib::Window,
        property: xlib::Atom,
        r#type: xlib::Atom,
        data: &[c_long],
    ) {
        unsafe {
            (self.xlib.XChangeProperty)(
                self.display,
                window,
                property,
                r#type,
                32,
                xlib::PropModeAppend,
                data.as_ptr().cast::<u8>(),
                data.len() as i32,
            );
        }
    }

    /// Replaces a window property.
    // `XChangeProperty`: https://tronche.com/gui/x/xlib/window-information/XChangeProperty.html
    pub fn replace_property_long(
        &self,
        window: xlib::Window,
        property: xlib::Atom,
        r#type: xlib::Atom,
        data: &[c_long],
    ) {
        unsafe {
            (self.xlib.XChangeProperty)(
                self.display,
                window,
                property,
                r#type,
                32,
                xlib::PropModeReplace,
                data.as_ptr().cast::<u8>(),
                data.len() as i32,
            );
        }
    }

    /// Sets the client list to the currently managed windows.
    // `XDeleteProperty`: https://tronche.com/gui/x/xlib/window-information/XDeleteProperty.html
    pub fn set_client_list(&self) {
        unsafe {
            (self.xlib.XDeleteProperty)(self.display, self.root, self.atoms.NetClientList);
        }
        for w in &self.managed_windows {
            let list = vec![*w as c_long];
            self.append_property_long(self.root, self.atoms.NetClientList, xlib::XA_WINDOW, &list);
        }
    }

    /// Sets the current desktop.
    pub fn set_current_desktop(&self, current_tag: Option<TagId>) {
        let indexes: Vec<u32> = match current_tag {
            Some(tag) => vec![tag as u32 - 1],
            None => vec![0],
        };
        self.set_desktop_prop(&indexes, self.atoms.NetCurrentDesktop);
    }

    // /// Sets the current viewport.
    // fn set_current_viewport(&self, tags: Vec<&String>) {
    //     let mut indexes: Vec<u32> = vec![];
    //     for tag in tags {
    //         for (i, mytag) in self.tags.iter().enumerate() {
    //             if tag.contains(mytag) {
    //                 indexes.push(i as u32);
    //             }
    //         }
    //     }
    //     if indexes.is_empty() {
    //         indexes.push(0);
    //     }
    //     self.set_desktop_prop(&indexes, self.atoms.NetDesktopViewport);
    // }

    /// Sets a desktop property.
    pub fn set_desktop_prop(&self, data: &[u32], atom: c_ulong) {
        let x_data: Vec<c_long> = data.iter().map(|x| *x as c_long).collect();
        self.replace_property_long(self.root, atom, xlib::XA_CARDINAL, &x_data);
    }

    /// Sets a desktop property with type `c_ulong`.
    pub fn set_desktop_prop_c_ulong(&self, value: c_ulong, atom: c_ulong, r#type: c_ulong) {
        let data = vec![value as c_long];
        self.replace_property_long(self.root, atom, r#type, &data);
    }

    /// Sets a desktop property with type string.
    // `XChangeProperty`: https://tronche.com/gui/x/xlib/window-information/XChangeProperty.html
    pub fn set_desktop_prop_string(&self, value: &str, atom: c_ulong, encoding: xlib::Atom) {
        if let Ok(cstring) = CString::new(value) {
            unsafe {
                (self.xlib.XChangeProperty)(
                    self.display,
                    self.root,
                    atom,
                    encoding,
                    8,
                    xlib::PropModeReplace,
                    cstring.as_ptr().cast::<u8>(),
                    value.len() as i32,
                );
                std::mem::forget(cstring);
            }
        }
    }

    /// Sets a windows state.
    pub fn set_state(&self, handle: WindowHandle, toggle_to: bool, atom: xlib::Atom) {
        if let WindowHandle::XlibHandle(h) = handle {
            let mut states = self.get_window_states_atoms(h);
            if toggle_to {
                if states.contains(&atom) {
                    return;
                }
                states.push(atom);
            } else {
                let index = match states.iter().position(|s| s == &atom) {
                    Some(i) => i,
                    None => return,
                };
                states.remove(index);
            }
            self.set_window_states_atoms(h, &states);
        }
    }

    /// Sets a windows border color.
    // `XSetWindowBorder`: https://tronche.com/gui/x/xlib/window/XSetWindowBorder.html
    pub fn set_window_border_color(&self, window: xlib::Window, mut color: c_ulong) {
        unsafe {
            // Force border opacity to 0xff.
            let mut bytes = color.to_le_bytes();
            bytes[3] = 0xff;
            color = c_ulong::from_le_bytes(bytes);
            (self.xlib.XSetWindowBorder)(self.display, window, color);
        }
    }

    pub fn set_background_color(&self, mut color: c_ulong) {
        unsafe {
            // Force border opacity to 0xff.
            let mut bytes = color.to_le_bytes();
            bytes[3] = 0xff;
            color = c_ulong::from_le_bytes(bytes);
            (self.xlib.XSetWindowBackground)(self.display, self.root, color);
            (self.xlib.XClearWindow)(self.display, self.root);
            (self.xlib.XFlush)(self.display);
            (self.xlib.XSync)(self.display, 0);
        }
    }

    /// Sets a windows configuration.
    pub fn set_window_config(
        &self,
        window: xlib::Window,
        mut window_changes: xlib::XWindowChanges,
        unlock: u32,
    ) {
        unsafe { (self.xlib.XConfigureWindow)(self.display, window, unlock, &mut window_changes) };
        self.sync();
    }

    /// Sets what desktop a window is on.
    pub fn set_window_desktop(&self, window: xlib::Window, current_tag: &TagId) {
        let mut indexes: Vec<c_long> = vec![*current_tag as c_long - 1];
        if indexes.is_empty() {
            indexes.push(0);
        }
        self.replace_property_long(window, self.atoms.NetWMDesktop, xlib::XA_CARDINAL, &indexes);
    }

    /// Sets the atom states of a window.
    pub fn set_window_states_atoms(&self, window: xlib::Window, states: &[xlib::Atom]) {
        let data: Vec<c_long> = states.iter().map(|x| *x as c_long).collect();
        self.replace_property_long(window, self.atoms.NetWMState, xlib::XA_ATOM, &data);
    }

    pub fn set_window_urgency(&self, window: xlib::Window, is_urgent: bool) {
        if let Some(mut wmh) = self.get_wmhints(window) {
            if ((wmh.flags & xlib::XUrgencyHint) != 0) == is_urgent {
                return;
            }
            wmh.flags = if is_urgent {
                wmh.flags | xlib::XUrgencyHint
            } else {
                wmh.flags & !xlib::XUrgencyHint
            };
            self.set_wmhints(window, &mut wmh);
        }
    }

    /// Sets the `XWMHints` of a window.
    pub fn set_wmhints(&self, window: xlib::Window, wmh: &mut xlib::XWMHints) {
        unsafe { (self.xlib.XSetWMHints)(self.display, window, wmh) };
    }

    /// Sets the `WM_STATE` of a window.
    pub fn set_wm_states(&self, window: xlib::Window, states: &[c_long]) {
        self.replace_property_long(window, self.atoms.WMState, self.atoms.WMState, states);
    }
}