pixel_widgets/backend/
winit.rs

1use crate::event::{Event, Key, Modifiers};
2
3use winit::event::{DeviceEvent, ElementState, KeyboardInput, MouseButton, MouseScrollDelta, WindowEvent};
4
5/// Converts a winit event to a pixel-widgets event, if such a conversion is available.
6/// Requires the "winit" feature.
7pub fn convert_event<T>(ev: winit::event::Event<T>) -> Option<Event> {
8    match ev {
9        winit::event::Event::WindowEvent { event, .. } => match event {
10            WindowEvent::Resized(size) => Some(Event::Resize(size.width as f32, size.height as f32)),
11            WindowEvent::CloseRequested => Some(Event::Exit),
12            WindowEvent::Focused(f) => Some(Event::Focus(f)),
13            WindowEvent::ReceivedCharacter(c) => Some(Event::Text(c)),
14            WindowEvent::KeyboardInput { input, .. } => match input {
15                KeyboardInput {
16                    state: ElementState::Pressed,
17                    virtual_keycode: Some(key),
18                    ..
19                } => convert_key(key).map(Event::Press),
20                KeyboardInput {
21                    state: ElementState::Released,
22                    virtual_keycode: Some(key),
23                    ..
24                } => convert_key(key).map(Event::Release),
25                _ => None,
26            },
27            WindowEvent::ModifiersChanged(modifiers) => Some(Event::Modifiers(convert_mods(modifiers))),
28            WindowEvent::MouseInput {
29                state: ElementState::Pressed,
30                button,
31                ..
32            } => match button {
33                MouseButton::Left => Some(Event::Press(Key::LeftMouseButton)),
34                MouseButton::Right => Some(Event::Press(Key::RightMouseButton)),
35                MouseButton::Middle => Some(Event::Press(Key::MiddleMouseButton)),
36                MouseButton::Other(_) => None,
37            },
38            WindowEvent::MouseInput {
39                state: ElementState::Released,
40                button,
41                ..
42            } => match button {
43                MouseButton::Left => Some(Event::Release(Key::LeftMouseButton)),
44                MouseButton::Right => Some(Event::Release(Key::RightMouseButton)),
45                MouseButton::Middle => Some(Event::Release(Key::MiddleMouseButton)),
46                MouseButton::Other(_) => None,
47            },
48            WindowEvent::CursorMoved { position, .. } => Some(Event::Cursor(position.x as f32, position.y as f32)),
49            WindowEvent::MouseWheel { delta, .. } => match delta {
50                MouseScrollDelta::LineDelta(dx, dy) => Some(Event::Scroll(dx * 20.0, dy * 20.0)),
51
52                MouseScrollDelta::PixelDelta(delta) => Some(Event::Scroll(delta.x as f32, delta.y as f32)),
53            },
54            _ => None,
55        },
56        winit::event::Event::DeviceEvent {
57            event: DeviceEvent::MouseMotion { delta: (x, y) },
58            ..
59        } => Some(Event::Motion(x as f32, y as f32)),
60        _ => None,
61    }
62}
63
64fn convert_mods(x: winit::event::ModifiersState) -> Modifiers {
65    Modifiers {
66        ctrl: x.ctrl(),
67        alt: x.alt(),
68        shift: x.shift(),
69        logo: x.logo(),
70        #[cfg(target_os = "macos")]
71        command: x.logo(),
72        #[cfg(not(target_os = "macos"))]
73        command: x.ctrl(),
74    }
75}
76
77fn convert_key(key: winit::event::VirtualKeyCode) -> Option<Key> {
78    use winit::event::VirtualKeyCode as Vk;
79
80    match key {
81        Vk::Key1 => Some(Key::Key1),
82        Vk::Key2 => Some(Key::Key2),
83        Vk::Key3 => Some(Key::Key3),
84        Vk::Key4 => Some(Key::Key4),
85        Vk::Key5 => Some(Key::Key5),
86        Vk::Key6 => Some(Key::Key6),
87        Vk::Key7 => Some(Key::Key7),
88        Vk::Key8 => Some(Key::Key8),
89        Vk::Key9 => Some(Key::Key9),
90        Vk::Key0 => Some(Key::Key0),
91        Vk::F1 => Some(Key::F1),
92        Vk::F2 => Some(Key::F2),
93        Vk::F3 => Some(Key::F3),
94        Vk::F4 => Some(Key::F4),
95        Vk::F5 => Some(Key::F5),
96        Vk::F6 => Some(Key::F6),
97        Vk::F7 => Some(Key::F7),
98        Vk::F8 => Some(Key::F8),
99        Vk::F9 => Some(Key::F9),
100        Vk::F10 => Some(Key::F10),
101        Vk::F11 => Some(Key::F11),
102        Vk::F12 => Some(Key::F12),
103        Vk::A => Some(Key::A),
104        Vk::B => Some(Key::B),
105        Vk::C => Some(Key::C),
106        Vk::D => Some(Key::D),
107        Vk::E => Some(Key::E),
108        Vk::F => Some(Key::F),
109        Vk::G => Some(Key::G),
110        Vk::H => Some(Key::H),
111        Vk::I => Some(Key::I),
112        Vk::J => Some(Key::J),
113        Vk::K => Some(Key::K),
114        Vk::L => Some(Key::L),
115        Vk::M => Some(Key::M),
116        Vk::N => Some(Key::N),
117        Vk::O => Some(Key::O),
118        Vk::P => Some(Key::P),
119        Vk::Q => Some(Key::Q),
120        Vk::R => Some(Key::R),
121        Vk::S => Some(Key::S),
122        Vk::T => Some(Key::T),
123        Vk::U => Some(Key::U),
124        Vk::V => Some(Key::V),
125        Vk::W => Some(Key::W),
126        Vk::X => Some(Key::X),
127        Vk::Y => Some(Key::Y),
128        Vk::Z => Some(Key::Z),
129        Vk::Tab => Some(Key::Tab),
130        Vk::LShift => Some(Key::Shift),
131        Vk::LControl => Some(Key::Ctrl),
132        Vk::LAlt => Some(Key::Alt),
133        Vk::Space => Some(Key::Space),
134        Vk::Return => Some(Key::Enter),
135        Vk::Back => Some(Key::Backspace),
136        Vk::Escape => Some(Key::Escape),
137        Vk::Left => Some(Key::Left),
138        Vk::Right => Some(Key::Right),
139        Vk::Up => Some(Key::Up),
140        Vk::Down => Some(Key::Down),
141        Vk::Home => Some(Key::Home),
142        Vk::End => Some(Key::End),
143        Vk::Minus => Some(Key::Minus),
144        Vk::Plus => Some(Key::Plus),
145        Vk::LBracket => Some(Key::BracketOpen),
146        Vk::RBracket => Some(Key::BracketClose),
147        Vk::Comma => Some(Key::Comma),
148        Vk::Period => Some(Key::Period),
149        Vk::Semicolon => Some(Key::Semicolon),
150        Vk::Apostrophe => Some(Key::Quote),
151        Vk::Grave => Some(Key::Tilde),
152        Vk::Backslash => Some(Key::Backslash),
153        Vk::Slash => Some(Key::Slash),
154        _ => None,
155    }
156}
pixel_widgets/backend/winit.rs

pixel_widgets/backend/
winit.rs
