131 lines
4.3 KiB
Rust
131 lines
4.3 KiB
Rust
use std::collections::HashMap;
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use std::path::PathBuf;
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use std::time::Instant;
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use canary::{PanelId, ScriptAbiImpl, ScriptInstance, WasmtimeRuntime, WasmtimeScript};
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use glium::backend::glutin::DisplayCreationError;
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use glium::{glutin, Surface};
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use glutin::event::{Event, WindowEvent};
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use glutin::event_loop::{ControlFlow, EventLoop, EventLoopProxy, EventLoopWindowTarget};
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use glutin::window::WindowId;
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use crate::gl::Graphics;
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use crate::ipc::{IpcMessage, IpcMessageSender};
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pub enum WindowMessage {
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OpenWindow { id: usize, script: PathBuf },
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CloseWindow { id: usize },
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Quit,
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}
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pub type WindowMessageSender = EventLoopProxy<WindowMessage>;
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pub struct Window {
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pub graphics: Graphics,
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pub script: WasmtimeScript<ScriptAbiImpl>,
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pub panel: PanelId,
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pub last_update: Instant,
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}
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impl Window {
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pub fn new(
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script: WasmtimeScript<ScriptAbiImpl>,
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panel: PanelId,
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event_loop: &EventLoopWindowTarget<WindowMessage>,
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) -> Result<Self, DisplayCreationError> {
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let wb = glutin::window::WindowBuilder::new();
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let cb = glutin::ContextBuilder::new();
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let display = glium::Display::new(wb, cb, &event_loop)?;
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let graphics = Graphics::new(display);
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let last_update = Instant::now();
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Ok(Self {
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graphics,
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script,
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panel,
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last_update,
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})
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}
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pub fn get_id(&self) -> WindowId {
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self.graphics.display.gl_window().window().id()
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}
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pub fn request_redraw(&mut self) {
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self.graphics.display.gl_window().window().request_redraw();
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}
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pub fn update(&mut self) {
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let now = Instant::now();
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let dt = now.duration_since(self.last_update).as_secs_f32();
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self.script.update(self.panel, dt);
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}
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pub fn draw(&mut self) {
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self.script.draw(self.panel, |commands| {
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self.graphics.draw(commands);
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});
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}
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}
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pub struct WindowStore {
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pub ipc_sender: IpcMessageSender,
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pub ipc_to_window: HashMap<usize, WindowId>,
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pub windows: HashMap<WindowId, Window>,
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pub runtime: WasmtimeRuntime,
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}
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impl WindowStore {
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pub fn new(ipc_sender: IpcMessageSender) -> Self {
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Self {
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ipc_sender,
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ipc_to_window: Default::default(),
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windows: Default::default(),
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runtime: WasmtimeRuntime::new().unwrap(),
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}
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}
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pub fn run(mut self, event_loop: EventLoop<WindowMessage>) -> ! {
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event_loop.run(move |event, event_loop, control_flow| match event {
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Event::WindowEvent { window_id, event } => {
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if let Some(window) = self.windows.get_mut(&window_id) {
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match event {
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WindowEvent::Resized(_) => window.request_redraw(),
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_ => {}
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}
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}
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}
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Event::RedrawRequested(id) => {
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if let Some(window) = self.windows.get_mut(&id) {
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window.draw();
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}
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}
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Event::MainEventsCleared => {
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for (_id, window) in self.windows.iter_mut() {
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window.update();
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window.request_redraw();
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}
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}
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Event::UserEvent(event) => match event {
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WindowMessage::OpenWindow { id, script } => {
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println!("Opening window {} with script {:?}", id, script);
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let abi = Default::default();
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let module = std::fs::read(script).unwrap();
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let mut script = self.runtime.load_module(abi, &module).unwrap();
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let panel = script.bind_panel(vec![]);
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let window = Window::new(script, panel, &event_loop).unwrap();
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let window_id = window.get_id();
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self.windows.insert(window_id, window);
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self.ipc_to_window.insert(id, window_id);
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}
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WindowMessage::CloseWindow { id } => {
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if let Some(window_id) = self.ipc_to_window.remove(&id) {
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self.windows.remove(&window_id);
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}
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}
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WindowMessage::Quit => *control_flow = ControlFlow::Exit,
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},
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_ => {}
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});
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}
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}
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