use core::ops::{Deref, DerefMut};
use core::{char, mem, slice};
pub const EVENT_NONE: i64 = 0;
pub const EVENT_KEY: i64 = 1;
pub const EVENT_MOUSE: i64 = 2;
pub const EVENT_BUTTON: i64 = 3;
pub const EVENT_SCROLL: i64 = 4;
pub const EVENT_QUIT: i64 = 5;
pub const EVENT_FOCUS: i64 = 6;
pub const EVENT_MOVE: i64 = 7;
pub const EVENT_RESIZE: i64 = 8;
pub const EVENT_SCREEN: i64 = 9;
pub const EVENT_CLIPBOARD: i64 = 10;
pub const EVENT_MOUSE_RELATIVE: i64 = 11;
pub const EVENT_DROP: i64 = 12;
pub const EVENT_TEXT_INPUT: i64 = 13;
pub const EVENT_CLIPBOARD_UPDATE: i64 = 14;
pub const EVENT_HOVER: i64 = 15;
#[derive(Copy, Clone, Debug)]
pub enum EventOption {
Key(KeyEvent),
TextInput(TextInputEvent),
Mouse(MouseEvent),
MouseRelative(MouseRelativeEvent),
Button(ButtonEvent),
Scroll(ScrollEvent),
Quit(QuitEvent),
Focus(FocusEvent),
Move(MoveEvent),
Resize(ResizeEvent),
Screen(ScreenEvent),
Clipboard(ClipboardEvent),
ClipboardUpdate(ClipboardUpdateEvent),
Drop(DropEvent),
Hover(HoverEvent),
Unknown(Event),
None,
}
#[derive(Copy, Clone, Debug)]
#[repr(packed)]
pub struct Event {
pub code: i64,
pub a: i64,
pub b: i64,
}
#[allow(clippy::new_without_default)]
impl Event {
pub fn new() -> Event {
Event {
code: 0,
a: 0,
b: 0,
}
}
pub fn to_option(self) -> EventOption {
match self.code {
EVENT_NONE => EventOption::None,
EVENT_KEY => EventOption::Key(KeyEvent::from_event(self)),
EVENT_TEXT_INPUT => EventOption::TextInput(TextInputEvent::from_event(self)),
EVENT_MOUSE => EventOption::Mouse(MouseEvent::from_event(self)),
EVENT_MOUSE_RELATIVE => {
EventOption::MouseRelative(MouseRelativeEvent::from_event(self))
}
EVENT_BUTTON => EventOption::Button(ButtonEvent::from_event(self)),
EVENT_SCROLL => EventOption::Scroll(ScrollEvent::from_event(self)),
EVENT_QUIT => EventOption::Quit(QuitEvent::from_event(self)),
EVENT_FOCUS => EventOption::Focus(FocusEvent::from_event(self)),
EVENT_MOVE => EventOption::Move(MoveEvent::from_event(self)),
EVENT_RESIZE => EventOption::Resize(ResizeEvent::from_event(self)),
EVENT_SCREEN => EventOption::Screen(ScreenEvent::from_event(self)),
EVENT_CLIPBOARD => EventOption::Clipboard(ClipboardEvent::from_event(self)),
EVENT_CLIPBOARD_UPDATE => {
EventOption::ClipboardUpdate(ClipboardUpdateEvent::from_event(self))
}
EVENT_DROP => EventOption::Drop(DropEvent::from_event(self)),
EVENT_HOVER => EventOption::Hover(HoverEvent::from_event(self)),
_ => EventOption::Unknown(self),
}
}
}
impl Deref for Event {
type Target = [u8];
fn deref(&self) -> &[u8] {
unsafe {
slice::from_raw_parts(self as *const Event as *const u8, mem::size_of::<Event>())
as &[u8]
}
}
}
impl DerefMut for Event {
fn deref_mut(&mut self) -> &mut [u8] {
unsafe {
slice::from_raw_parts_mut(self as *mut Event as *mut u8, mem::size_of::<Event>())
as &mut [u8]
}
}
}
pub const K_A: u8 = 0x1E;
pub const K_B: u8 = 0x30;
pub const K_C: u8 = 0x2E;
pub const K_D: u8 = 0x20;
pub const K_E: u8 = 0x12;
pub const K_F: u8 = 0x21;
pub const K_G: u8 = 0x22;
pub const K_H: u8 = 0x23;
pub const K_I: u8 = 0x17;
pub const K_J: u8 = 0x24;
pub const K_K: u8 = 0x25;
pub const K_L: u8 = 0x26;
pub const K_M: u8 = 0x32;
pub const K_N: u8 = 0x31;
pub const K_O: u8 = 0x18;
pub const K_P: u8 = 0x19;
pub const K_Q: u8 = 0x10;
pub const K_R: u8 = 0x13;
pub const K_S: u8 = 0x1F;
pub const K_T: u8 = 0x14;
pub const K_U: u8 = 0x16;
pub const K_V: u8 = 0x2F;
pub const K_W: u8 = 0x11;
pub const K_X: u8 = 0x2D;
pub const K_Y: u8 = 0x15;
pub const K_Z: u8 = 0x2C;
pub const K_0: u8 = 0x0B;
pub const K_1: u8 = 0x02;
pub const K_2: u8 = 0x03;
pub const K_3: u8 = 0x04;
pub const K_4: u8 = 0x05;
pub const K_5: u8 = 0x06;
pub const K_6: u8 = 0x07;
pub const K_7: u8 = 0x08;
pub const K_8: u8 = 0x09;
pub const K_9: u8 = 0x0A;
pub const K_NUM_0: u8 = 0x70;
pub const K_NUM_1: u8 = 0x71;
pub const K_NUM_2: u8 = 0x72;
pub const K_NUM_3: u8 = 0x73;
pub const K_NUM_4: u8 = 0x74;
pub const K_NUM_5: u8 = 0x75;
pub const K_NUM_6: u8 = 0x76;
pub const K_NUM_7: u8 = 0x77;
pub const K_NUM_8: u8 = 0x78;
pub const K_NUM_9: u8 = 0x79;
pub const K_TICK: u8 = 0x29;
pub const K_MINUS: u8 = 0x0C;
pub const K_EQUALS: u8 = 0x0D;
pub const K_BACKSLASH: u8 = 0x2B;
pub const K_BRACE_OPEN: u8 = 0x1A;
pub const K_BRACE_CLOSE: u8 = 0x1B;
pub const K_SEMICOLON: u8 = 0x27;
pub const K_QUOTE: u8 = 0x28;
pub const K_COMMA: u8 = 0x33;
pub const K_PERIOD: u8 = 0x34;
pub const K_SLASH: u8 = 0x35;
pub const K_BKSP: u8 = 0x0E;
pub const K_SPACE: u8 = 0x39;
pub const K_TAB: u8 = 0x0F;
pub const K_CAPS: u8 = 0x3A;
pub const K_LEFT_SHIFT: u8 = 0x2A;
pub const K_RIGHT_SHIFT: u8 = 0x36;
pub const K_CTRL: u8 = 0x1D;
pub const K_ALT: u8 = 0x38;
pub const K_ALT_GR: u8 = 0x64;
pub const K_ENTER: u8 = 0x1C;
pub const K_ESC: u8 = 0x01;
pub const K_F1: u8 = 0x3B;
pub const K_F2: u8 = 0x3C;
pub const K_F3: u8 = 0x3D;
pub const K_F4: u8 = 0x3E;
pub const K_F5: u8 = 0x3F;
pub const K_F6: u8 = 0x40;
pub const K_F7: u8 = 0x41;
pub const K_F8: u8 = 0x42;
pub const K_F9: u8 = 0x43;
pub const K_F10: u8 = 0x44;
pub const K_HOME: u8 = 0x47;
pub const K_UP: u8 = 0x48;
pub const K_PGUP: u8 = 0x49;
pub const K_LEFT: u8 = 0x4B;
pub const K_RIGHT: u8 = 0x4D;
pub const K_END: u8 = 0x4F;
pub const K_DOWN: u8 = 0x50;
pub const K_PGDN: u8 = 0x51;
pub const K_DEL: u8 = 0x53;
pub const K_F11: u8 = 0x57;
pub const K_F12: u8 = 0x58;
#[derive(Copy, Clone, Debug)]
pub struct KeyEvent {
pub character: char,
pub scancode: u8,
pub pressed: bool,
}
impl KeyEvent {
pub fn to_event(&self) -> Event {
Event {
code: EVENT_KEY,
a: self.character as i64,
b: self.scancode as i64 | (self.pressed as i64) << 8,
}
}
pub fn from_event(event: Event) -> KeyEvent {
KeyEvent {
character: char::from_u32(event.a as u32).unwrap_or('\0'),
scancode: event.b as u8,
pressed: event.b & 1 << 8 == 1 << 8,
}
}
}
#[derive(Copy, Clone, Debug)]
pub struct TextInputEvent {
pub character: char,
}
impl TextInputEvent {
pub fn to_event(&self) -> Event {
Event {
code: EVENT_TEXT_INPUT,
a: self.character as i64,
b: 0,
}
}
pub fn from_event(event: Event) -> TextInputEvent {
TextInputEvent {
character: char::from_u32(event.a as u32).unwrap_or('\0'),
}
}
}
#[derive(Copy, Clone, Debug)]
pub struct MouseEvent {
pub x: i32,
pub y: i32,
}
impl MouseEvent {
pub fn to_event(&self) -> Event {
Event {
code: EVENT_MOUSE,
a: self.x as i64,
b: self.y as i64,
}
}
pub fn from_event(event: Event) -> MouseEvent {
MouseEvent {
x: event.a as i32,
y: event.b as i32,
}
}
}
#[derive(Copy, Clone, Debug)]
pub struct MouseRelativeEvent {
pub dx: i32,
pub dy: i32,
}
impl MouseRelativeEvent {
pub fn to_event(&self) -> Event {
Event {
code: EVENT_MOUSE_RELATIVE,
a: self.dx as i64,
b: self.dy as i64,
}
}
pub fn from_event(event: Event) -> MouseRelativeEvent {
MouseRelativeEvent {
dx: event.a as i32,
dy: event.b as i32,
}
}
}
#[derive(Copy, Clone, Debug)]
pub struct ButtonEvent {
pub left: bool,
pub middle: bool,
pub right: bool,
}
impl ButtonEvent {
pub fn to_event(&self) -> Event {
Event {
code: EVENT_BUTTON,
a: self.left as i64 | (self.middle as i64) << 1 | (self.right as i64) << 2,
b: 0,
}
}
pub fn from_event(event: Event) -> ButtonEvent {
ButtonEvent {
left: event.a & 1 == 1,
middle: event.a & 2 == 2,
right: event.a & 4 == 4,
}
}
}
#[derive(Copy, Clone, Debug)]
pub struct ScrollEvent {
pub x: i32,
pub y: i32,
}
impl ScrollEvent {
pub fn to_event(&self) -> Event {
Event {
code: EVENT_SCROLL,
a: self.x as i64,
b: self.y as i64,
}
}
pub fn from_event(event: Event) -> ScrollEvent {
ScrollEvent {
x: event.a as i32,
y: event.b as i32,
}
}
}
#[derive(Copy, Clone, Debug)]
pub struct QuitEvent;
impl QuitEvent {
pub fn to_event(&self) -> Event {
Event {
code: EVENT_QUIT,
a: 0,
b: 0,
}
}
pub fn from_event(_: Event) -> QuitEvent {
QuitEvent
}
}
#[derive(Copy, Clone, Debug)]
pub struct FocusEvent {
pub focused: bool,
}
impl FocusEvent {
pub fn to_event(&self) -> Event {
Event {
code: EVENT_FOCUS,
a: self.focused as i64,
b: 0,
}
}
pub fn from_event(event: Event) -> FocusEvent {
FocusEvent {
focused: event.a > 0,
}
}
}
#[derive(Copy, Clone, Debug)]
pub struct MoveEvent {
pub x: i32,
pub y: i32,
}
impl MoveEvent {
pub fn to_event(&self) -> Event {
Event {
code: EVENT_MOVE,
a: self.x as i64,
b: self.y as i64,
}
}
pub fn from_event(event: Event) -> MoveEvent {
MoveEvent {
x: event.a as i32,
y: event.b as i32,
}
}
}
#[derive(Copy, Clone, Debug)]
pub struct ResizeEvent {
pub width: u32,
pub height: u32,
}
impl ResizeEvent {
pub fn to_event(&self) -> Event {
Event {
code: EVENT_RESIZE,
a: self.width as i64,
b: self.height as i64,
}
}
pub fn from_event(event: Event) -> ResizeEvent {
ResizeEvent {
width: event.a as u32,
height: event.b as u32,
}
}
}
#[derive(Copy, Clone, Debug)]
pub struct ScreenEvent {
pub width: u32,
pub height: u32,
}
impl ScreenEvent {
pub fn to_event(&self) -> Event {
Event {
code: EVENT_SCREEN,
a: self.width as i64,
b: self.height as i64,
}
}
pub fn from_event(event: Event) -> ScreenEvent {
ScreenEvent {
width: event.a as u32,
height: event.b as u32,
}
}
}
pub const CLIPBOARD_COPY: u8 = 0;
pub const CLIPBOARD_CUT: u8 = 1;
pub const CLIPBOARD_PASTE: u8 = 2;
#[derive(Copy, Clone, Debug)]
pub struct ClipboardUpdateEvent;
impl ClipboardUpdateEvent {
pub fn to_event(&self) -> Event {
Event {
code: EVENT_CLIPBOARD_UPDATE,
a: 0,
b: 0,
}
}
pub fn from_event(_: Event) -> ClipboardUpdateEvent {
ClipboardUpdateEvent
}
}
#[derive(Copy, Clone, Debug)]
pub struct ClipboardEvent {
pub kind: u8,
pub size: usize,
}
impl ClipboardEvent {
pub fn to_event(&self) -> Event {
Event {
code: EVENT_CLIPBOARD,
a: self.kind as i64,
b: self.size as i64,
}
}
pub fn from_event(event: Event) -> ClipboardEvent {
ClipboardEvent {
kind: event.a as u8,
size: event.b as usize,
}
}
}
pub const DROP_FILE: u8 = 0;
pub const DROP_TEXT: u8 = 1;
#[derive(Copy, Clone, Debug)]
pub struct DropEvent {
pub kind: u8,
}
impl DropEvent {
pub fn to_event(&self) -> Event {
Event {
code: EVENT_DROP,
a: self.kind as i64,
b: 0,
}
}
pub fn from_event(event: Event) -> DropEvent {
DropEvent {
kind: event.a as u8,
}
}
}
#[derive(Copy, Clone, Debug)]
pub struct HoverEvent {
pub entered: bool,
}
impl HoverEvent {
pub fn to_event(&self) -> Event {
Event {
code: EVENT_HOVER,
a: self.entered as i64,
b: 0,
}
}
pub fn from_event(event: Event) -> HoverEvent {
HoverEvent {
entered: event.a > 0,
}
}
}