3ff4834bd5
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.
70 lines
1.9 KiB
Rust
70 lines
1.9 KiB
Rust
mod canvas;
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mod event;
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mod timeout;
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pub use self::canvas::Canvas;
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pub use self::timeout::Timeout;
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use crate::dpi::LogicalSize;
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use crate::platform::web::WindowExtWebSys;
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use crate::window::Window;
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use wasm_bindgen::{closure::Closure, JsCast};
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use web_sys::{window, BeforeUnloadEvent, Element, HtmlCanvasElement};
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pub fn throw(msg: &str) {
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wasm_bindgen::throw_str(msg);
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}
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pub fn exit_fullscreen() {
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let window = web_sys::window().expect("Failed to obtain window");
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let document = window.document().expect("Failed to obtain document");
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document.exit_fullscreen();
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}
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pub fn on_unload(mut handler: impl FnMut() + 'static) {
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let window = web_sys::window().expect("Failed to obtain window");
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let closure = Closure::wrap(
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Box::new(move |_: BeforeUnloadEvent| handler()) as Box<dyn FnMut(BeforeUnloadEvent)>
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);
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window
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.add_event_listener_with_callback("beforeunload", &closure.as_ref().unchecked_ref())
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.expect("Failed to add close listener");
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}
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impl WindowExtWebSys for Window {
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fn canvas(&self) -> HtmlCanvasElement {
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self.window.canvas().raw().clone()
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}
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}
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pub fn window_size() -> LogicalSize {
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let window = web_sys::window().expect("Failed to obtain window");
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let width = window
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.inner_width()
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.expect("Failed to get width")
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.as_f64()
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.expect("Failed to get width as f64");
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let height = window
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.inner_height()
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.expect("Failed to get height")
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.as_f64()
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.expect("Failed to get height as f64");
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LogicalSize { width, height }
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}
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pub fn is_fullscreen(canvas: &HtmlCanvasElement) -> bool {
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let window = window().expect("Failed to obtain window");
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let document = window.document().expect("Failed to obtain document");
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match document.fullscreen_element() {
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Some(elem) => {
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let raw: Element = canvas.clone().into();
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raw == elem
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}
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None => false,
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}
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}
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