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|
//! Create interactive, native cross-platform applications.
use crate::{mouse, Executor, Runtime, Size};
use iced_graphics::window;
use iced_graphics::Viewport;
use iced_winit::application;
use iced_winit::conversion;
use iced_winit::{Clipboard, Debug, Proxy, Settings};
pub use iced_winit::Application;
pub use iced_winit::{program, Program};
/// Runs an [`Application`] with an executor, compositor, and the provided
/// settings.
///
/// [`Application`]: trait.Application.html
pub fn run<A, E, C>(
settings: Settings<A::Flags>,
compositor_settings: C::Settings,
) where
A: Application + 'static,
E: Executor + 'static,
C: window::GLCompositor<Renderer = A::Renderer> + 'static,
{
use glutin::{
event,
event_loop::{ControlFlow, EventLoop},
ContextBuilder,
};
let mut debug = Debug::new();
debug.startup_started();
let event_loop = EventLoop::with_user_event();
let mut runtime = {
let executor = E::new().expect("Create executor");
let proxy = Proxy::new(event_loop.create_proxy());
Runtime::new(executor, proxy)
};
let flags = settings.flags;
let (application, init_command) = runtime.enter(|| A::new(flags));
runtime.spawn(init_command);
let subscription = application.subscription();
runtime.track(subscription);
let mut title = application.title();
let mut mode = application.mode();
let mut background_color = application.background_color();
let context = {
let builder = settings.window.into_builder(
&title,
mode,
event_loop.primary_monitor(),
);
let context = ContextBuilder::new()
.with_vsync(true)
.with_multisampling(C::sample_count(&compositor_settings) as u16)
.build_windowed(builder, &event_loop)
.expect("Open window");
#[allow(unsafe_code)]
unsafe {
context.make_current().expect("Make OpenGL context current")
}
};
let clipboard = Clipboard::new(&context.window());
let mut mouse_interaction = mouse::Interaction::default();
let mut modifiers = glutin::event::ModifiersState::default();
let physical_size = context.window().inner_size();
let mut viewport = Viewport::with_physical_size(
Size::new(physical_size.width, physical_size.height),
context.window().scale_factor(),
);
let mut resized = false;
#[allow(unsafe_code)]
let (mut compositor, mut renderer) = unsafe {
C::new(compositor_settings, |address| {
context.get_proc_address(address)
})
};
let mut state = program::State::new(
application,
viewport.logical_size(),
&mut renderer,
&mut debug,
);
debug.startup_finished();
event_loop.run(move |event, _, control_flow| match event {
event::Event::MainEventsCleared => {
if state.is_queue_empty() {
return;
}
let command = runtime.enter(|| {
state.update(
clipboard.as_ref().map(|c| c as _),
viewport.logical_size(),
&mut renderer,
&mut debug,
)
});
// If the application was updated
if let Some(command) = command {
runtime.spawn(command);
let program = state.program();
// Update subscriptions
let subscription = program.subscription();
runtime.track(subscription);
// Update window title
let new_title = program.title();
if title != new_title {
context.window().set_title(&new_title);
title = new_title;
}
// Update window mode
let new_mode = program.mode();
if mode != new_mode {
context.window().set_fullscreen(conversion::fullscreen(
context.window().current_monitor(),
new_mode,
));
mode = new_mode;
}
// Update background color
background_color = program.background_color();
}
context.window().request_redraw();
}
event::Event::UserEvent(message) => {
state.queue_message(message);
}
event::Event::RedrawRequested(_) => {
debug.render_started();
if resized {
let physical_size = viewport.physical_size();
context.resize(glutin::dpi::PhysicalSize::new(
physical_size.width,
physical_size.height,
));
compositor.resize_viewport(physical_size);
resized = false;
}
let new_mouse_interaction = compositor.draw(
&mut renderer,
&viewport,
background_color,
state.primitive(),
&debug.overlay(),
);
context.swap_buffers().expect("Swap buffers");
debug.render_finished();
if new_mouse_interaction != mouse_interaction {
context.window().set_cursor_icon(
conversion::mouse_interaction(new_mouse_interaction),
);
mouse_interaction = new_mouse_interaction;
}
// TODO: Handle animations!
// Maybe we can use `ControlFlow::WaitUntil` for this.
}
event::Event::WindowEvent {
event: window_event,
..
} => {
application::handle_window_event(
&window_event,
context.window(),
control_flow,
&mut modifiers,
&mut viewport,
&mut resized,
&mut debug,
);
if let Some(event) = conversion::window_event(
&window_event,
viewport.scale_factor(),
modifiers,
) {
state.queue_event(event.clone());
runtime.broadcast(event);
}
}
_ => {
*control_flow = ControlFlow::Wait;
}
})
}
|
