mirror of
https://github.com/slint-ui/slint.git
synced 2025-08-31 07:37:24 +00:00
97 lines
3.6 KiB
Rust
97 lines
3.6 KiB
Rust
// Copyright © SixtyFPS GmbH <info@sixtyfps.io>
|
|
// SPDX-License-Identifier: (GPL-3.0-only OR LicenseRef-SixtyFPS-commercial)
|
|
|
|
/*!
|
|
|
|
**NOTE**: This library is an **internal** crate for the [SixtyFPS project](https://sixtyfps.io).
|
|
This crate should **not be used directly** by applications using SixtyFPS.
|
|
You should use the `sixtyfps` crate instead.
|
|
|
|
**WARNING**: This crate does not follow the semver convention for versioning and can
|
|
only be used with `version = "=x.y.z"` in Cargo.toml.
|
|
|
|
|
|
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
|
|
|
|
*/
|
|
#![doc(html_logo_url = "https://sixtyfps.io/resources/logo.drawio.svg")]
|
|
#![cfg_attr(
|
|
not(any(
|
|
feature = "sixtyfps-rendering-backend-qt",
|
|
feature = "sixtyfps-rendering-backend-gl"
|
|
)),
|
|
no_std
|
|
)]
|
|
|
|
cfg_if::cfg_if! {
|
|
if #[cfg(feature = "sixtyfps-rendering-backend-qt")] {
|
|
use sixtyfps_rendering_backend_qt as default_backend;
|
|
} else if #[cfg(feature = "sixtyfps-rendering-backend-gl")] {
|
|
use sixtyfps_rendering_backend_gl as default_backend;
|
|
}
|
|
}
|
|
|
|
cfg_if::cfg_if! {
|
|
if #[cfg(any(
|
|
feature = "sixtyfps-rendering-backend-qt",
|
|
feature = "sixtyfps-rendering-backend-gl"
|
|
))] {
|
|
pub fn backend() -> &'static dyn sixtyfps_corelib::backend::Backend {
|
|
sixtyfps_corelib::backend::instance_or_init(|| {
|
|
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);
|
|
}
|
|
|
|
Box::new(default_backend::Backend)
|
|
})
|
|
}
|
|
pub use default_backend::{
|
|
native_widgets, Backend, NativeGlobals, NativeWidgets, HAS_NATIVE_STYLE,
|
|
};
|
|
} else {
|
|
pub fn backend() -> &'static dyn sixtyfps_corelib::backend::Backend {
|
|
sixtyfps_corelib::backend::instance().expect("no default backend configured, the backend must be initialized manually")
|
|
}
|
|
|
|
pub type NativeWidgets = ();
|
|
pub type NativeGlobals = ();
|
|
pub mod native_widgets {}
|
|
pub const HAS_NATIVE_STYLE: bool = false;
|
|
}
|
|
}
|
|
|
|
#[doc(hidden)]
|
|
#[cold]
|
|
#[cfg(not(target_arch = "wasm32"))]
|
|
pub fn use_modules() {
|
|
sixtyfps_corelib::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();
|
|
}
|