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Add web fullscreen support (#1142)

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Adds fullscreen using native web APIs to the stdweb and web-sys backends.

Due to limitations of browser APIs, requests for fullscreen can only be fulfilled during a short-lived user-triggered event. This commit does automatically handle that under the hood, but it does introduce unavoidable latency in full-screening the canvas.
This commit is contained in:
Ryan G 2019-10-11 11:45:07 -04:00 • committed by GitHub
parent bedb889693
commit 3ff4834bd5
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GPG key ID: 4AEE18F83AFDEB23
7 changed files with 242 additions and 48 deletions
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30
src/platform_impl/web/event_loop/window_target.rs
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@ -1,4 +1,5 @@
use super::{backend, device, proxy::Proxy, runner, window};
use crate::dpi::LogicalSize;
use crate::event::{DeviceId, ElementState, Event, KeyboardInput, TouchPhase, WindowEvent};
use crate::event_loop::ControlFlow;
use crate::window::WindowId;
@ -37,7 +38,6 @@ impl<T> WindowTarget<T> {
pub fn register(&self, canvas: &mut backend::Canvas, id: window::Id) {
let runner = self.runner.clone();
canvas.set_attribute("data-raw-handle", &id.0.to_string());
canvas.on_blur(move || {
@ -165,5 +165,33 @@ impl<T> WindowTarget<T> {
},
});
});
let runner = self.runner.clone();
let raw = canvas.raw().clone();
let mut intended_size = LogicalSize {
width: raw.width() as f64,
height: raw.height() as f64,
};
canvas.on_fullscreen_change(move || {
// If the canvas is marked as fullscreen, it is moving *into* fullscreen
// If it is not, it is moving *out of* fullscreen
let new_size = if backend::is_fullscreen(&raw) {
intended_size = LogicalSize {
width: raw.width() as f64,
height: raw.height() as f64,
};
backend::window_size()
} else {
intended_size
};
raw.set_width(new_size.width as u32);
raw.set_height(new_size.height as u32);
runner.send_event(Event::WindowEvent {
window_id: WindowId(id),
event: WindowEvent::Resized(new_size),
});
runner.request_redraw(WindowId(id));
});
}
}