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|
use crate::conversion;
use crate::{Application, Color, Debug, Mode, Point, Size, Viewport};
use std::marker::PhantomData;
use winit::event::WindowEvent;
use winit::window::Window;
#[derive(Debug, Clone)]
pub struct State<A: Application> {
title: String,
mode: Mode,
background_color: Color,
scale_factor: f64,
viewport: Viewport,
cursor_position: winit::dpi::PhysicalPosition<f64>,
modifiers: winit::event::ModifiersState,
application: PhantomData<A>,
}
impl<A: Application> State<A> {
pub fn new(application: &A, window: &Window) -> Self {
let title = application.title();
let mode = application.mode();
let background_color = application.background_color();
let scale_factor = application.scale_factor();
let viewport = {
let physical_size = window.inner_size();
Viewport::with_physical_size(
Size::new(physical_size.width, physical_size.height),
window.scale_factor() * scale_factor,
)
};
Self {
title,
mode,
background_color,
scale_factor,
viewport,
// TODO: Encode cursor availability in the type-system
cursor_position: winit::dpi::PhysicalPosition::new(-1.0, -1.0),
modifiers: winit::event::ModifiersState::default(),
application: PhantomData,
}
}
pub fn background_color(&self) -> Color {
self.background_color
}
pub fn viewport(&self) -> &Viewport {
&self.viewport
}
pub fn physical_size(&self) -> Size<u32> {
self.viewport.physical_size()
}
pub fn logical_size(&self) -> Size<f32> {
self.viewport.logical_size()
}
pub fn scale_factor(&self) -> f64 {
self.viewport.scale_factor()
}
pub fn cursor_position(&self) -> Point {
conversion::cursor_position(
self.cursor_position,
self.viewport.scale_factor(),
)
}
pub fn modifiers(&self) -> winit::event::ModifiersState {
self.modifiers
}
pub fn update(
&mut self,
window: &Window,
event: &WindowEvent<'_>,
_debug: &mut Debug,
) {
match event {
WindowEvent::Resized(new_size) => {
let size = Size::new(new_size.width, new_size.height);
self.viewport = Viewport::with_physical_size(
size,
window.scale_factor() * self.scale_factor,
);
}
WindowEvent::ScaleFactorChanged {
scale_factor: new_scale_factor,
new_inner_size,
} => {
let size =
Size::new(new_inner_size.width, new_inner_size.height);
self.viewport = Viewport::with_physical_size(
size,
new_scale_factor * self.scale_factor,
);
}
WindowEvent::CursorMoved { position, .. } => {
self.cursor_position = *position;
}
WindowEvent::CursorLeft { .. } => {
// TODO: Encode cursor availability in the type-system
self.cursor_position =
winit::dpi::PhysicalPosition::new(-1.0, -1.0);
}
WindowEvent::ModifiersChanged(new_modifiers) => {
self.modifiers = *new_modifiers;
}
#[cfg(feature = "debug")]
WindowEvent::KeyboardInput {
input:
winit::event::KeyboardInput {
virtual_keycode: Some(winit::event::VirtualKeyCode::F12),
state: winit::event::ElementState::Pressed,
..
},
..
} => _debug.toggle(),
_ => {}
}
}
pub fn synchronize(&mut self, application: &A, window: &Window) {
// Update window title
let new_title = application.title();
if self.title != new_title {
window.set_title(&new_title);
self.title = new_title;
}
// Update window mode
let new_mode = application.mode();
if self.mode != new_mode {
window.set_fullscreen(conversion::fullscreen(
window.current_monitor(),
new_mode,
));
self.mode = new_mode;
}
// Update background color
self.background_color = application.background_color();
// Update scale factor
let new_scale_factor = application.scale_factor();
if self.scale_factor != new_scale_factor {
let size = window.inner_size();
self.viewport = Viewport::with_physical_size(
Size::new(size.width, size.height),
window.scale_factor() * new_scale_factor,
);
self.scale_factor = new_scale_factor;
}
}
}
|
