xcb 1.7.0

Rust safe bindings for XCB
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

use crate::base::{self, BaseEvent, WiredIn, WiredOut, XidNew};
use crate::x::{self};

fn visual_data(bits_per_rgb_value: u8) -> Vec<u8> {
    vec![
        0x50,
        0x40,
        0x30,
        0x20,               // visual_id
        3,                  // visual class
        bits_per_rgb_value, // bits_per_rgb_value
        0x50,
        0x40, // colormap_entries
        0xff,
        0x00,
        0x00,
        0x00, // red_mask
        0x00,
        0xff,
        0x00,
        0x00, // green_mask
        0x00,
        0x00,
        0xff,
        0x00, // blue_mask
        0x00,
        0x00,
        0x00,
        0x00, // pad
    ]
}

fn depth_data(visual_bprv: &[u8], extra_garbage: usize) -> Vec<u8> {
    let data: &[u8] = &[
        16,   // depth
        0x00, // pad
        0x02, 0x00, // visuals_len
        0x00, 0x00, 0x00, 0x00, // pad
    ];
    let mut vec = Vec::from(data);
    let visuals_data = visual_bprv.iter().map(|bprv| visual_data(*bprv));
    for mut vd in visuals_data {
        vec.append(&mut vd);
    }
    // append garbage
    for g in 0..extra_garbage {
        vec.push(((g ^ extra_garbage) & 0xff) as u8);
    }
    vec
}

#[test]
#[cfg(target_endian = "little")]
fn test_fixbuf_from_data() {
    let data = visual_data(24);

    let vt = unsafe { x::Visualtype::from_data(&data) };

    assert_eq!(vt.visual_id(), 0x20304050);
    assert_eq!(vt.class(), x::VisualClass::PseudoColor);
    assert_eq!(vt.bits_per_rgb_value(), 24);
    assert_eq!(vt.colormap_entries(), 0x4050);
    assert_eq!(vt.red_mask(), 0x000000ff);
    assert_eq!(vt.green_mask(), 0x0000ff00);
    assert_eq!(vt.blue_mask(), 0x00ff0000);
}

#[test]
#[cfg(target_endian = "little")]
fn test_dynbuf_from_data() {
    let mut data = depth_data(&[32, 24], 4);

    assert_eq!(data.len(), 60);
    assert_eq!(
        unsafe { <&x::Depth as WiredIn>::compute_wire_len(data.as_ptr(), ()) },
        56
    );
    {
        let depth = unsafe { x::Depth::from_data(&data[0..56]) };
        assert_eq!(depth.depth(), 16);
        let visuals = depth.visuals();
        assert_eq!(visuals.len(), 2);
        let vt = visuals[0];
        assert_eq!(vt.visual_id(), 0x20304050);
        assert_eq!(vt.class(), x::VisualClass::PseudoColor);
        assert_eq!(vt.bits_per_rgb_value(), 32);
        assert_eq!(vt.colormap_entries(), 0x4050);
        assert_eq!(vt.red_mask(), 0x000000ff);
        assert_eq!(vt.green_mask(), 0x0000ff00);
        assert_eq!(vt.blue_mask(), 0x00ff0000);
        let vt = visuals[1];
        assert_eq!(vt.visual_id(), 0x20304050);
        assert_eq!(vt.class(), x::VisualClass::PseudoColor);
        assert_eq!(vt.bits_per_rgb_value(), 24);
        assert_eq!(vt.colormap_entries(), 0x4050);
        assert_eq!(vt.red_mask(), 0x000000ff);
        assert_eq!(vt.green_mask(), 0x0000ff00);
        assert_eq!(vt.blue_mask(), 0x00ff0000);
    }

    // pop garbage
    data.pop();
    data.pop();
    data.pop();
    data.pop();

    let depth = unsafe { x::DepthBuf::from_data(data) };
    assert_eq!(depth.depth(), 16);
    let visuals = depth.visuals();
    assert_eq!(visuals.len(), 2);
    let vt = visuals[0];
    assert_eq!(vt.visual_id(), 0x20304050);
    assert_eq!(vt.class(), x::VisualClass::PseudoColor);
    assert_eq!(vt.bits_per_rgb_value(), 32);
    assert_eq!(vt.colormap_entries(), 0x4050);
    assert_eq!(vt.red_mask(), 0x000000ff);
    assert_eq!(vt.green_mask(), 0x0000ff00);
    assert_eq!(vt.blue_mask(), 0x00ff0000);
    let vt = visuals[1];
    assert_eq!(vt.visual_id(), 0x20304050);
    assert_eq!(vt.class(), x::VisualClass::PseudoColor);
    assert_eq!(vt.bits_per_rgb_value(), 24);
    assert_eq!(vt.colormap_entries(), 0x4050);
    assert_eq!(vt.red_mask(), 0x000000ff);
    assert_eq!(vt.green_mask(), 0x0000ff00);
    assert_eq!(vt.blue_mask(), 0x00ff0000);
}

#[test]
#[should_panic]
#[cfg(target_endian = "little")]
fn test_dynbuf_from_data_panic() {
    let data = depth_data(&[32, 24], 4);
    unsafe { x::DepthBuf::from_data(data) };
}

#[test]
fn test_cw_is_sorted_distinct() {
    assert!(x::Cw::is_sorted_distinct(&[
        x::Cw::BackPixel(4),
        x::Cw::BitGravity(x::Gravity::West),
        x::Cw::WinGravity(x::Gravity::West),
    ]));

    assert!(!x::Cw::is_sorted_distinct(&[
        x::Cw::BackPixel(4),
        x::Cw::WinGravity(x::Gravity::West),
        x::Cw::BitGravity(x::Gravity::West),
    ]));

    assert!(!x::Cw::is_sorted_distinct(&[
        x::Cw::BackPixel(4),
        x::Cw::BitGravity(x::Gravity::West),
        x::Cw::BitGravity(x::Gravity::West),
    ]));

    assert!(!x::Cw::is_sorted_distinct(&[
        x::Cw::BackPixel(4),
        x::Cw::BitGravity(x::Gravity::West),
        x::Cw::BitGravity(x::Gravity::Center),
    ]));
}

#[test]
fn test_cw_cmp() {
    assert!(x::Cw::BorderPixel(12) < x::Cw::BorderPixel(13));
    assert!(x::Cw::BorderPixel(13) > x::Cw::BorderPixel(12));
    assert!(x::Cw::BorderPixel(12) == x::Cw::BorderPixel(12));
    assert!(x::Cw::BorderPixel(12) > x::Cw::BackPixel(13));
}

#[test]
fn atom_hashmap() {
    use std::collections::HashMap;

    let map = {
        let mut map = HashMap::new();
        map.insert(x::ATOM_ATOM, "Atom");
        map.insert(x::ATOM_CURSOR, "Cursor");
        map.insert(x::ATOM_PIXMAP, "Pixmap");
        map.insert(x::ATOM_STRING, "String");
        map.insert(x::ATOM_WINDOW, "Window");
        map
    };

    assert_eq!(map.get(&x::ATOM_ATOM), Some(&"Atom"));
    assert_eq!(map.get(&x::ATOM_CURSOR), Some(&"Cursor"));
    assert_eq!(map.get(&x::ATOM_PIXMAP), Some(&"Pixmap"));
    assert_eq!(map.get(&x::ATOM_STRING), Some(&"String"));
    assert_eq!(map.get(&x::ATOM_WINDOW), Some(&"Window"));
}

#[test]
fn test_event_new() {
    let time = x::CURRENT_TIME;
    let requestor = x::Window::new(12);
    let selection = x::ATOM_STRING;
    let target = x::ATOM_FAMILY_NAME;
    let property = x::ATOM_RGB_COLOR_MAP;
    let ev = x::SelectionNotifyEvent::new(time, requestor, selection, target, property);
    assert_eq!(ev.response_type(), x::SelectionNotifyEvent::NUMBER as u8);
    assert_eq!(ev.sequence(), 0u16);
    assert_eq!(ev.time(), time);
    assert_eq!(ev.requestor(), requestor);
    assert_eq!(ev.selection(), selection);
    assert_eq!(ev.target(), target);
    assert_eq!(ev.property(), property);
}