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Implement ThemeChanged for web target. (#1462)

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* Implement ThemeChanged for web target.

* Add TODO upstream to stdweb.

Co-authored-by: Ryan G <ryanisaacg@users.noreply.github.com>
This commit is contained in:
daxpedda 2020-02-17 20:25:27 +01:00 • committed by GitHub
parent e88e8bc194
commit d1073dcecb
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9 changed files with 92 additions and 2 deletions
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17
src/platform_impl/web/stdweb/canvas.rs
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@ -6,6 +6,7 @@ use crate::platform_impl::{OsError, PlatformSpecificWindowBuilderAttributes};
use std::cell::RefCell;
use std::rc::Rc;
use stdweb::js;
use stdweb::traits::IPointerEvent;
use stdweb::unstable::TryInto;
use stdweb::web::event::{
@ -240,6 +241,22 @@ impl Canvas {
self.on_fullscreen_change = Some(self.add_event(move |_: FullscreenChangeEvent| handler()));
}
pub fn on_dark_mode<F>(&mut self, handler: F)
where
F: 'static + FnMut(bool),
{
// TODO: upstream to stdweb
js! {
var handler = @{handler};
if (window.matchMedia) {
window.matchMedia("(prefers-color-scheme: dark)").addListener(function(e) {
handler(event.matches)
});
}
}
}
fn add_event<E, F>(&self, mut handler: F) -> EventListenerHandle
where
E: ConcreteEvent,