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#![forbid(unsafe_code)]
// use vulkanalia::vk::{ DeviceV1_4, EntryV1_4, InstanceV1_4 };
use winit::dpi::LogicalSize;
use winit::application::ApplicationHandler;
use winit::event::WindowEvent;
use winit::event_loop::{ ActiveEventLoop, EventLoop };
use winit::window::{ Window, WindowAttributes, WindowId };
#[derive(Debug)]
struct Error {
message: String,
}
type Result<T> = std::result::Result<T, Error>;
impl std::fmt::Display for Error {
fn fmt(&self, fmt: &mut std::fmt::Formatter<'_>)
-> std::result::Result<(), std::fmt::Error>
{
fmt.write_str(&self.message)
}
}
impl From<winit::error::EventLoopError> for Error {
fn from(e: winit::error::EventLoopError) -> Self {
match e {
winit::error::EventLoopError::NotSupported(e) => Self::from(e),
winit::error::EventLoopError::Os(e) => Self::from(e),
winit::error::EventLoopError::RecreationAttempt => Error {
message:
"There may only ever be a single winit event loop.".to_string()
},
winit::error::EventLoopError::ExitFailure(code) => Error {
message:
format!("Clean unhappy exit with code {} via winit event loop",
code)
}
}
}
}
impl From<winit::error::NotSupportedError> for Error {
fn from(e: winit::error::NotSupportedError) -> Self {
Error {
message:
format!("The winit backend does not support an operation: {}",
e.to_string())
}
}
}
impl From<winit::error::OsError> for Error {
fn from(e: winit::error::OsError) -> Self {
Error {
message: format!("The OS told winit about an error: {}", e.to_string())
}
}
}
struct Surreality {
window: Window
}
impl Surreality {
fn new(window: Window) -> Result<Self> {
Ok(Surreality {
window
})
}
fn render(&mut self, window_id: WindowId) -> Result<()> {
if window_id == self.window.id() {
println!("render the window");
} else {
println!("render something unknown");
}
Ok(())
}
}
impl ApplicationHandler for Surreality {
fn resumed(&mut self, event_loop: &ActiveEventLoop) {
println!("resumed");
}
fn window_event(&mut self, event_loop: &ActiveEventLoop,
window_id: WindowId, event: WindowEvent)
{
println!("window event {:?}", event);
match event {
WindowEvent::RedrawRequested => {
if !event_loop.exiting() {
self.render(window_id).unwrap(); // TODO
}
}
WindowEvent::CloseRequested => {
event_loop.exit();
}
_ => { }
}
}
}
fn main() -> std::process::ExitCode {
let body: fn() -> Result<()> = || {
let event_loop = EventLoop::new()?;
let window_attributes = WindowAttributes::default()
.with_title("Love, Curiosity, Justice")
.with_inner_size(LogicalSize::new(1024, 768));
let window = event_loop.create_window(window_attributes)?;
let mut surreality = Surreality::new(window)?;
event_loop.run_app(&mut surreality)?;
Ok(())
};
println!("Hello!");
match body() {
Ok(()) => std::process::ExitCode::SUCCESS,
Err(e) => {
eprintln!("Error: {}", e);
std::process::ExitCode::from(1)
}
}
}
|