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
use std::{cell::RefCell, rc::Rc, sync::Mutex};
use wayland_client::{
protocol::{wl_compositor, wl_output, wl_surface},
Attached, DispatchData, Main,
};
use crate::output::{add_output_listener, with_output_info, OutputListener};
pub(crate) struct SurfaceUserData {
scale_factor: i32,
outputs: Vec<(wl_output::WlOutput, i32, OutputListener)>,
}
impl SurfaceUserData {
fn new() -> Self {
SurfaceUserData { scale_factor: 1, outputs: Vec::new() }
}
pub(crate) fn enter<F>(
&mut self,
output: wl_output::WlOutput,
surface: wl_surface::WlSurface,
callback: &Option<Rc<RefCell<F>>>,
) where
F: FnMut(i32, wl_surface::WlSurface, DispatchData) + 'static,
{
let output_scale = with_output_info(&output, |info| info.scale_factor).unwrap_or(1);
let my_surface = surface.clone();
let my_callback = wayland_client::UserData::new();
if let Some(ref cb) = callback {
my_callback.set(|| cb.clone());
}
let listener = add_output_listener(&output, move |output, info, ddata| {
let mut user_data = my_surface
.as_ref()
.user_data()
.get::<Mutex<SurfaceUserData>>()
.unwrap()
.lock()
.unwrap();
for (ref o, ref mut factor, _) in user_data.outputs.iter_mut() {
if o.as_ref().equals(output.as_ref()) {
if info.obsolete {
*factor = -1;
} else {
*factor = info.scale_factor;
}
break;
}
}
let callback = my_callback.get::<Rc<RefCell<F>>>().cloned();
let old_scale_factor = user_data.scale_factor;
let new_scale_factor = user_data.recompute_scale_factor();
drop(user_data);
if let Some(ref cb) = callback {
if old_scale_factor != new_scale_factor {
(&mut *cb.borrow_mut())(new_scale_factor, surface.clone(), ddata);
}
}
});
self.outputs.push((output, output_scale, listener));
}
pub(crate) fn leave(&mut self, output: &wl_output::WlOutput) {
self.outputs.retain(|(ref output2, _, _)| !output.as_ref().equals(output2.as_ref()));
}
fn recompute_scale_factor(&mut self) -> i32 {
let mut new_scale_factor = 1;
self.outputs.retain(|&(_, output_scale, _)| {
if output_scale > 0 {
new_scale_factor = ::std::cmp::max(new_scale_factor, output_scale);
true
} else {
false
}
});
if self.outputs.is_empty() {
return self.scale_factor;
}
self.scale_factor = new_scale_factor;
new_scale_factor
}
}
pub(crate) fn setup_surface<F>(
surface: Main<wl_surface::WlSurface>,
callback: Option<F>,
) -> Attached<wl_surface::WlSurface>
where
F: FnMut(i32, wl_surface::WlSurface, DispatchData) + 'static,
{
let callback = callback.map(|c| Rc::new(RefCell::new(c)));
surface.quick_assign(move |surface, event, ddata| {
let mut user_data =
surface.as_ref().user_data().get::<Mutex<SurfaceUserData>>().unwrap().lock().unwrap();
match event {
wl_surface::Event::Enter { output } => {
user_data.enter(output, surface.detach(), &callback);
}
wl_surface::Event::Leave { output } => {
user_data.leave(&output);
}
_ => unreachable!(),
};
let old_scale_factor = user_data.scale_factor;
let new_scale_factor = user_data.recompute_scale_factor();
drop(user_data);
if let Some(ref cb) = callback {
if old_scale_factor != new_scale_factor {
(&mut *cb.borrow_mut())(new_scale_factor, surface.detach(), ddata);
}
}
});
surface.as_ref().user_data().set_threadsafe(|| Mutex::new(SurfaceUserData::new()));
surface.into()
}
impl<E: crate::environment::GlobalHandler<wl_compositor::WlCompositor>>
crate::environment::Environment<E>
{
pub fn create_surface(&self) -> Attached<wl_surface::WlSurface> {
let compositor = self.require_global::<wl_compositor::WlCompositor>();
setup_surface(compositor.create_surface(), None::<fn(_, _, DispatchData)>)
}
pub fn create_surface_with_scale_callback<
F: FnMut(i32, wl_surface::WlSurface, DispatchData) + 'static,
>(
&self,
f: F,
) -> Attached<wl_surface::WlSurface> {
let compositor = self.require_global::<wl_compositor::WlCompositor>();
setup_surface(compositor.create_surface(), Some(f))
}
}
pub fn get_surface_scale_factor(surface: &wl_surface::WlSurface) -> i32 {
surface
.as_ref()
.user_data()
.get::<Mutex<SurfaceUserData>>()
.expect("SCTK: Surface was not created by SCTK.")
.lock()
.unwrap()
.scale_factor
}
pub fn get_surface_outputs(surface: &wl_surface::WlSurface) -> Vec<wl_output::WlOutput> {
surface
.as_ref()
.user_data()
.get::<Mutex<SurfaceUserData>>()
.expect("SCTK: Surface was not created by SCTK.")
.lock()
.unwrap()
.outputs
.iter()
.map(|(ref output, _, _)| output.clone())
.collect()
}