/* LICENSE BEGIN This file is part of the SixtyFPS Project -- https://sixtyfps.io Copyright (c) 2021 Olivier Goffart Copyright (c) 2021 Simon Hausmann SPDX-License-Identifier: GPL-3.0-only This file is also available under commercial licensing terms. Please contact info@sixtyfps.io for more information. LICENSE END */ /*! The purpose of this crate is to select the default backend for [SixtyFPS](https://sixtyfps.io) The backend can either be a runtime or a build time decision. The runtime decision is decided by the `SIXTYFPS_BACKEND` environment variable. The built time default depends on the platform. In order for the crate to be available at runtime, they need to be added as feature *NOTE*: This library is an internal crate for the [SixtyFPS project](https://sixtyfps.io). This crate should not be used directly by application using SixtyFPS. You should use the `sixtyfps` crate instead. */ #![doc(html_logo_url = "https://sixtyfps.io/resources/logo.drawio.svg")] cfg_if::cfg_if! { if #[cfg(any(target_os="windows", target_os="macos", target_os = "linux", target_os = "dragonfly", target_os = "freebsd", target_os = "openbsd", target_os = "netbsd"))] { use sixtyfps_rendering_backend_qt as default_backend; } else { use sixtyfps_rendering_backend_gl as default_backend; } } pub fn backend() -> &'static dyn sixtyfps_corelib::backend::Backend { sixtyfps_corelib::backend::instance_or_init(|| { #[cfg(any( feature = "sixtyfps-rendering-backend-qt", feature = "sixtyfps-rendering-backend-gl" ))] let backend_config = std::env::var("SIXTYFPS_BACKEND").unwrap_or_default(); #[cfg(feature = "sixtyfps-rendering-backend-qt")] if backend_config == "Qt" { return Box::new(sixtyfps_rendering_backend_qt::Backend); } #[cfg(feature = "sixtyfps-rendering-backend-gl")] if backend_config == "GL" { return Box::new(sixtyfps_rendering_backend_gl::Backend); } #[cfg(any( feature = "sixtyfps-rendering-backend-qt", feature = "sixtyfps-rendering-backend-gl" ))] if !backend_config.is_empty() { eprintln!("Could not load rendering backend {}, fallback to default", backend_config) } #[cfg(feature = "sixtyfps-rendering-backend-gl")] if !default_backend::IS_AVAILABLE { // If Qt is not available always fallback to Gl return Box::new(sixtyfps_rendering_backend_gl::Backend); } return Box::new(default_backend::Backend); }) } pub use default_backend::{ native_widgets, Backend, NativeGlobals, NativeWidgets, HAS_NATIVE_STYLE, }; #[doc(hidden)] #[cold] #[cfg(not(target_arch = "wasm32"))] pub fn use_modules() { sixtyfps_corelib::use_modules(); default_backend::use_modules(); #[cfg(feature = "sixtyfps-rendering-backend-qt")] sixtyfps_rendering_backend_qt::use_modules(); #[cfg(feature = "sixtyfps-rendering-backend-gl")] sixtyfps_rendering_backend_gl::use_modules(); }