#![cfg(target_arch = "wasm32")] //! The web target does not automatically insert the canvas element object into the web page, to //! allow end users to determine how the page should be laid out. Use the `WindowExtStdweb` or //! `WindowExtWebSys` traits (depending on your web backend) to retrieve the canvas from the //! Window. #[cfg(feature = "stdweb")] use stdweb::web::html_element::CanvasElement; #[cfg(feature = "stdweb")] pub trait WindowExtStdweb { fn canvas(&self) -> CanvasElement; } #[cfg(feature = "web-sys")] use web_sys::HtmlCanvasElement; #[cfg(feature = "web-sys")] pub trait WindowExtWebSys { fn canvas(&self) -> HtmlCanvasElement; }