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Make 'current_monitor' return 'Option<MonitorHandle>'

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On certain platforms window couldn't be on any monitor
resulting in failures of 'current_monitor' function.

Such issue was happening on Wayland, since the window
isn't on any monitor, unless the user has drawn something into it.

Returning 'Option<MonitorHandle>' will give an ability to
handle such situations gracefully by properly indicating that
there's no current monitor.

Fixes #793.
This commit is contained in:
Kirill Chibisov 2020-09-07 20:09:24 +03:00 • committed by GitHub
parent e2cf2a5754
commit cac627ed05
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GPG key ID: 4AEE18F83AFDEB23
12 changed files with 65 additions and 29 deletions
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6
examples/multithreaded.rs
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@ -21,7 +21,7 @@ fn main() {
.build(&event_loop)
.unwrap();
let mut video_modes: Vec<_> = window.current_monitor().video_modes().collect();
let mut video_modes: Vec<_> = window.current_monitor().unwrap().video_modes().collect();
let mut video_mode_id = 0usize;
let (tx, rx) = mpsc::channel();
@ -34,7 +34,7 @@ fn main() {
// was moved to an another monitor, so that the window
// appears on this monitor instead when we go fullscreen
let previous_video_mode = video_modes.iter().cloned().nth(video_mode_id);
video_modes = window.current_monitor().video_modes().collect();
video_modes = window.current_monitor().unwrap().video_modes().collect();
video_mode_id = video_mode_id.min(video_modes.len());
let video_mode = video_modes.iter().nth(video_mode_id);
@ -83,7 +83,7 @@ fn main() {
}
F => window.set_fullscreen(match (state, modifiers.alt()) {
(true, false) => {
Some(Fullscreen::Borderless(window.current_monitor()))
Some(Fullscreen::Borderless(window.current_monitor().unwrap()))
}
(true, true) => Some(Fullscreen::Exclusive(
video_modes.iter().nth(video_mode_id).unwrap().clone(),