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233 lines (217 loc) · 6.39 KB
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#[derive(Debug, Copy, Clone, PartialEq, Hash, Eq)]
#[repr(u8)]
pub enum MouseButton {
Left = 0,
Middle = 1,
Right = 2,
Unknown = 255,
}
#[derive(Debug, Copy, Clone)]
pub struct Touch {
pub id: u32,
pub x: f32,
pub y: f32,
}
#[derive(Debug, Copy, Clone, PartialEq, Hash, Eq)]
#[repr(u16)]
/// These keycode values are based off of X11's `keysymdef.h`.
/// Missing keycodes from that list are given the prefix 0x01.
pub enum KeyCode {
Space = 0x0020,
Apostrophe = 0x0027,
Comma = 0x002c,
Minus = 0x002d,
Period = 0x002e,
Slash = 0x002f,
Key0 = 0x0030,
Key1 = 0x0031,
Key2 = 0x0032,
Key3 = 0x0033,
Key4 = 0x0034,
Key5 = 0x0035,
Key6 = 0x0036,
Key7 = 0x0037,
Key8 = 0x0038,
Key9 = 0x0039,
Semicolon = 0x003b,
Equal = 0x003d,
A = 0x0041,
B = 0x0042,
C = 0x0043,
D = 0x0044,
E = 0x0045,
F = 0x0046,
G = 0x0047,
H = 0x0048,
I = 0x0049,
J = 0x004a,
K = 0x004b,
L = 0x004c,
M = 0x004d,
N = 0x004e,
O = 0x004f,
P = 0x0050,
Q = 0x0051,
R = 0x0052,
S = 0x0053,
T = 0x0054,
U = 0x0055,
V = 0x0056,
W = 0x0057,
X = 0x0058,
Y = 0x0059,
Z = 0x005a,
LeftBracket = 0x005b,
Backslash = 0x005c,
RightBracket = 0x005d,
GraveAccent = 0x0060,
World1 = 0x0100,
World2 = 0x0101,
Escape = 0xff1b,
Enter = 0xff0d,
Tab = 0xff09,
Backspace = 0xff08,
Insert = 0xff63,
Delete = 0xffff,
Right = 0xff53,
Left = 0xff51,
Down = 0xff54,
Up = 0xff52,
PageUp = 0xff55,
PageDown = 0xff56,
Home = 0xff50,
End = 0xff57,
CapsLock = 0xffe5,
ScrollLock = 0xff14,
NumLock = 0xff7f,
PrintScreen = 0xfd1d,
Pause = 0xff13,
F1 = 0xffbe,
F2 = 0xffbf,
F3 = 0xffc0,
F4 = 0xffc1,
F5 = 0xffc2,
F6 = 0xffc3,
F7 = 0xffc4,
F8 = 0xffc5,
F9 = 0xffc6,
F10 = 0xffc7,
F11 = 0xffc8,
F12 = 0xffc9,
F13 = 0xffca,
F14 = 0xffcb,
F15 = 0xffcc,
F16 = 0xffcd,
F17 = 0xffce,
F18 = 0xffcf,
F19 = 0xffd0,
F20 = 0xffd1,
F21 = 0xffd2,
F22 = 0xffd3,
F23 = 0xffd4,
F24 = 0xffd5,
F25 = 0xffd6,
Kp0 = 0xffb0,
Kp1 = 0xffb1,
Kp2 = 0xffb2,
Kp3 = 0xffb3,
Kp4 = 0xffb4,
Kp5 = 0xffb5,
Kp6 = 0xffb6,
Kp7 = 0xffb7,
Kp8 = 0xffb8,
Kp9 = 0xffb9,
KpDecimal = 0xffae,
KpDivide = 0xffaf,
KpMultiply = 0xffaa,
KpSubtract = 0xffad,
KpAdd = 0xffab,
KpEnter = 0xff8d,
KpEqual = 0xffbd,
LeftShift = 0xffe1,
LeftControl = 0xffe3,
LeftAlt = 0xffe9,
LeftSuper = 0xffeb,
RightShift = 0xffe2,
RightControl = 0xffe4,
RightAlt = 0xffea,
RightSuper = 0xffec,
Menu = 0xff67,
// Android back button
Back = 0xff04,
Unknown = 0x01ff,
}
#[derive(Debug, Copy, Clone, PartialEq, Default)]
pub struct KeyMods {
pub shift: bool,
pub ctrl: bool,
pub alt: bool,
pub logo: bool,
}
#[derive(Debug, Hash, PartialEq, Eq, Clone, Copy)]
pub enum TouchPhase {
Started,
Moved,
Ended,
Cancelled,
}
/// A trait defining event callbacks.
pub trait EventHandler {
/// On most platforms update() and draw() are called each frame, sequentially,
/// draw right after update.
/// But on Android (and maybe some other platforms in the future) update might
/// be called without draw.
/// When the app is in background, Android destroys the rendering surface,
/// while app is still alive and can do some usefull calculations.
/// Note that in this case drawing from update may lead to crashes.
fn update(&mut self);
fn draw(&mut self);
fn resize_event(&mut self, _width: f32, _height: f32) {}
fn mouse_motion_event(&mut self, _x: f32, _y: f32) {}
fn mouse_wheel_event(&mut self, _x: f32, _y: f32) {}
fn mouse_button_down_event(&mut self, _button: MouseButton, _x: f32, _y: f32) {}
fn mouse_button_up_event(&mut self, _button: MouseButton, _x: f32, _y: f32) {}
fn char_event(&mut self, _character: char, _keymods: KeyMods, _repeat: bool) {}
fn key_down_event(&mut self, _keycode: KeyCode, _keymods: KeyMods, _repeat: bool) {}
/// Note: you are not always guaranteed to receive a key_up event. For example on
/// Wayland when leaving the focused window, the key_up event will not be caught.
fn key_up_event(&mut self, _keycode: KeyCode, _keymods: KeyMods) {}
/// Default implementation emulates mouse clicks
fn touch_event(&mut self, phase: TouchPhase, _id: u64, x: f32, y: f32) {
if phase == TouchPhase::Started {
self.mouse_button_down_event(MouseButton::Left, x, y);
}
if phase == TouchPhase::Ended {
self.mouse_button_up_event(MouseButton::Left, x, y);
}
if phase == TouchPhase::Moved {
self.mouse_motion_event(x, y);
}
}
/// Represents raw hardware mouse motion event
/// Note that these events are delivered regardless of input focus and not in pixels, but in
/// hardware units instead. And those units may be different from pixels depending on the target platform
fn raw_mouse_motion(&mut self, _dx: f32, _dy: f32) {}
/// Window has been minimized
/// Right now is only implemented on Android, X11 and wasm,
/// On Andoid window_minimized_event is called on a Pause ndk callback
/// On X11 and wasm it will be called on focus change events.
fn window_minimized_event(&mut self) {}
/// Window has been restored
/// Right now is only implemented on Android, X11 and wasm,
/// On Andoid window_minimized_event is called on a Pause ndk callback
/// On X11 and wasm it will be called on focus change events.
fn window_restored_event(&mut self) {}
/// This event is sent when the userclicks the window's close button
/// or application code calls the ctx.request_quit() function. The event
/// handler callback code can handle this event by calling
/// ctx.cancel_quit() to cancel the quit.
/// If the event is ignored, the application will quit as usual.
fn quit_requested_event(&mut self) {}
/// A file has been dropped over the application.
/// Applications can request the number of dropped files with
/// `ctx.dropped_file_count()`, path of an individual file with
/// `ctx.dropped_file_path()`, and for wasm targets the file bytes
/// can be requested with `ctx.dropped_file_bytes()`.
fn files_dropped_event(&mut self) {}
}