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use bevy_math::IVec2;
use bevy_utils::HashMap;
use bevy_window::{Window, WindowDescriptor, WindowId, WindowMode};
use raw_window_handle::HasRawWindowHandle;
use winit::dpi::LogicalSize;
#[derive(Debug, Default)]
pub struct WinitWindows {
pub windows: HashMap<winit::window::WindowId, winit::window::Window>,
pub window_id_to_winit: HashMap<WindowId, winit::window::WindowId>,
pub winit_to_window_id: HashMap<winit::window::WindowId, WindowId>,
}
impl WinitWindows {
pub fn create_window(
&mut self,
event_loop: &winit::event_loop::EventLoopWindowTarget<()>,
window_id: WindowId,
window_descriptor: &WindowDescriptor,
) -> Window {
#[cfg(target_os = "windows")]
let mut winit_window_builder = {
use winit::platform::windows::WindowBuilderExtWindows;
winit::window::WindowBuilder::new().with_drag_and_drop(false)
};
#[cfg(not(target_os = "windows"))]
let mut winit_window_builder = winit::window::WindowBuilder::new();
winit_window_builder = match window_descriptor.mode {
WindowMode::BorderlessFullscreen => winit_window_builder.with_fullscreen(Some(
winit::window::Fullscreen::Borderless(event_loop.primary_monitor()),
)),
WindowMode::Fullscreen => {
winit_window_builder.with_fullscreen(Some(winit::window::Fullscreen::Exclusive(
get_best_videomode(&event_loop.primary_monitor().unwrap()),
)))
}
WindowMode::SizedFullscreen => winit_window_builder.with_fullscreen(Some(
winit::window::Fullscreen::Exclusive(get_fitting_videomode(
&event_loop.primary_monitor().unwrap(),
window_descriptor.width as u32,
window_descriptor.height as u32,
)),
)),
_ => {
let WindowDescriptor {
width,
height,
position,
scale_factor_override,
..
} = window_descriptor;
if let Some(position) = position {
if let Some(sf) = scale_factor_override {
winit_window_builder = winit_window_builder.with_position(
winit::dpi::LogicalPosition::new(
position[0] as f64,
position[1] as f64,
)
.to_physical::<f64>(*sf),
);
} else {
winit_window_builder =
winit_window_builder.with_position(winit::dpi::LogicalPosition::new(
position[0] as f64,
position[1] as f64,
));
}
}
if let Some(sf) = scale_factor_override {
winit_window_builder.with_inner_size(
winit::dpi::LogicalSize::new(*width, *height).to_physical::<f64>(*sf),
)
} else {
winit_window_builder
.with_inner_size(winit::dpi::LogicalSize::new(*width, *height))
}
}
.with_resizable(window_descriptor.resizable)
.with_decorations(window_descriptor.decorations)
.with_transparent(window_descriptor.transparent),
};
let constraints = window_descriptor.resize_constraints.check_constraints();
let min_inner_size = LogicalSize {
width: constraints.min_width,
height: constraints.min_height,
};
let max_inner_size = LogicalSize {
width: constraints.max_width,
height: constraints.max_height,
};
let winit_window_builder =
if constraints.max_width.is_finite() && constraints.max_height.is_finite() {
winit_window_builder
.with_min_inner_size(min_inner_size)
.with_max_inner_size(max_inner_size)
} else {
winit_window_builder.with_min_inner_size(min_inner_size)
};
#[allow(unused_mut)]
let mut winit_window_builder = winit_window_builder.with_title(&window_descriptor.title);
#[cfg(target_arch = "wasm32")]
{
use wasm_bindgen::JsCast;
use winit::platform::web::WindowBuilderExtWebSys;
if let Some(selector) = &window_descriptor.canvas {
let window = web_sys::window().unwrap();
let document = window.document().unwrap();
let canvas = document
.query_selector(&selector)
.expect("Cannot query for canvas element.");
if let Some(canvas) = canvas {
let canvas = canvas.dyn_into::<web_sys::HtmlCanvasElement>().ok();
winit_window_builder = winit_window_builder.with_canvas(canvas);
} else {
panic!("Cannot find element: {}.", selector);
}
}
}
let winit_window = winit_window_builder.build(event_loop).unwrap();
if window_descriptor.cursor_locked {
match winit_window.set_cursor_grab(true) {
Ok(_) => {}
Err(winit::error::ExternalError::NotSupported(_)) => {}
Err(err) => Err(err).unwrap(),
}
}
winit_window.set_cursor_visible(window_descriptor.cursor_visible);
self.window_id_to_winit.insert(window_id, winit_window.id());
self.winit_to_window_id.insert(winit_window.id(), window_id);
#[cfg(target_arch = "wasm32")]
{
use winit::platform::web::WindowExtWebSys;
if window_descriptor.canvas.is_none() {
let canvas = winit_window.canvas();
let window = web_sys::window().unwrap();
let document = window.document().unwrap();
let body = document.body().unwrap();
body.append_child(&canvas)
.expect("Append canvas to HTML body.");
}
}
let position = winit_window
.outer_position()
.ok()
.map(|position| IVec2::new(position.x, position.y));
let inner_size = winit_window.inner_size();
let scale_factor = winit_window.scale_factor();
let raw_window_handle = winit_window.raw_window_handle();
self.windows.insert(winit_window.id(), winit_window);
Window::new(
window_id,
window_descriptor,
inner_size.width,
inner_size.height,
scale_factor,
position,
raw_window_handle,
)
}
pub fn get_window(&self, id: WindowId) -> Option<&winit::window::Window> {
self.window_id_to_winit
.get(&id)
.and_then(|id| self.windows.get(id))
}
pub fn get_window_id(&self, id: winit::window::WindowId) -> Option<WindowId> {
self.winit_to_window_id.get(&id).cloned()
}
}
pub fn get_fitting_videomode(
monitor: &winit::monitor::MonitorHandle,
width: u32,
height: u32,
) -> winit::monitor::VideoMode {
let mut modes = monitor.video_modes().collect::<Vec<_>>();
fn abs_diff(a: u32, b: u32) -> u32 {
if a > b {
return a - b;
}
b - a
}
modes.sort_by(|a, b| {
use std::cmp::Ordering::*;
match abs_diff(a.size().width, width).cmp(&abs_diff(b.size().width, width)) {
Equal => {
match abs_diff(a.size().height, height).cmp(&abs_diff(b.size().height, height)) {
Equal => b.refresh_rate().cmp(&a.refresh_rate()),
default => default,
}
}
default => default,
}
});
modes.first().unwrap().clone()
}
pub fn get_best_videomode(monitor: &winit::monitor::MonitorHandle) -> winit::monitor::VideoMode {
let mut modes = monitor.video_modes().collect::<Vec<_>>();
modes.sort_by(|a, b| {
use std::cmp::Ordering::*;
match b.size().width.cmp(&a.size().width) {
Equal => match b.size().height.cmp(&a.size().height) {
Equal => b.refresh_rate().cmp(&a.refresh_rate()),
default => default,
},
default => default,
}
});
modes.first().unwrap().clone()
}
#[cfg(target_arch = "wasm32")]
unsafe impl Send for WinitWindows {}
#[cfg(target_arch = "wasm32")]
unsafe impl Sync for WinitWindows {}
