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Add 'WindowEvent::Occluded(bool)'

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This commits and an event to track window occlusion state,
which could help optimize rendering downstream.
This commit is contained in:
trimental 2022-07-06 18:46:25 +00:00 • committed by GitHub
parent 4b10993970
commit e289f30e5d
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GPG key ID: 4AEE18F83AFDEB23
4 changed files with 39 additions and 3 deletions
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11
src/event.rs
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@ -372,6 +372,15 @@ pub enum WindowEvent<'a> {
///
/// At the moment this is only supported on Windows.
ThemeChanged(Theme),
/// The window has been occluded (completely hidden from view).
///
/// This is different to window visibility as it depends on whether the window is closed,
/// minimised, set invisible, or fully occluded by another window.
///
/// Platform-specific behavior:
/// - **iOS / Android / Web / Wayland / Windows :** Unsupported.
Occluded(bool),
}
impl Clone for WindowEvent<'static> {
@ -461,6 +470,7 @@ impl Clone for WindowEvent<'static> {
ScaleFactorChanged { .. } => {
unreachable!("Static event can't be about scale factor changing")
}
Occluded(occluded) => Occluded(*occluded),
};
}
}
@ -546,6 +556,7 @@ impl<'a> WindowEvent<'a> {
Touch(touch) => Some(Touch(touch)),
ThemeChanged(theme) => Some(ThemeChanged(theme)),
ScaleFactorChanged { .. } => None,
Occluded(occluded) => Some(Occluded(occluded)),
}
}
}