74 lines
1.7 KiB
Rust
74 lines
1.7 KiB
Rust
use std::any::Any;
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use crate::renderer::{OsuiRenderer, Renderer};
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pub mod error;
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pub mod renderer;
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pub use error::Result;
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pub type Node = Box<dyn Fn(&mut dyn Renderer)>;
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pub type Component = Box<dyn Fn(&mut Context) -> Node>;
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pub trait Event {
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fn as_any(&self) -> &dyn Any;
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}
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pub struct Context {
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event_handlers: Vec<Box<dyn Fn(&dyn Event)>>,
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}
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pub struct Osui {
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node: Node,
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renderer: Option<Box<dyn Renderer>>,
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}
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impl Osui {
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pub fn new(component: Component) -> Self {
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let mut cx = Context {
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event_handlers: Vec::new(),
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};
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Osui {
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node: component(&mut cx),
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renderer: None,
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}
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}
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pub fn with_renderer(component: Component, renderer: Box<dyn Renderer>) -> Self {
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let mut cx = Context {
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event_handlers: Vec::new(),
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};
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Osui {
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node: component(&mut cx),
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renderer: Some(renderer),
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}
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}
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pub fn render(&mut self) -> Result<()> {
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renderer::utils::clear()?;
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if let Some(renderer) = &mut self.renderer {
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(self.node)(renderer.as_mut());
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} else {
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(self.node)(&mut OsuiRenderer);
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}
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Ok(())
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}
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}
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impl Context {
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pub fn event<E: Event + 'static, F: Fn(&E) + 'static>(&mut self, handler: F) {
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self.event_handlers.push(Box::new(move |e| {
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if let Some(e) = e.as_any().downcast_ref() {
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(handler)(e)
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}
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}));
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}
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pub fn global_event<E: Event + 'static, F: Fn(&E) + 'static>(&mut self, handler: F) {
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self.event_handlers.push(Box::new(move |e| {
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if let Some(e) = e.as_any().downcast_ref() {
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(handler)(e)
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}
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}));
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}
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}
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