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winit/src/platform_impl/macos/event.rs
Kirill Chibisov 281077a0d8 Remove lifetime from the Event 
Lifetimes don't work nicely when dealing with multithreaded environments
in the current design of the existing winit's event handling model, so
remove it in favor of `InnerSizeWriter` fences passed to client, so they
could try to update the size.

Fixes #1387.
2023-08-15 13:10:02 +04:00

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use std::ffi::c_void;
use core_foundation::{
base::CFRelease,
data::{CFDataGetBytePtr, CFDataRef},
};
use objc2::rc::Id;
use smol_str::SmolStr;
use super::appkit::{NSEvent, NSEventModifierFlags};
use super::window::WinitWindow;
use crate::{
dpi::LogicalSize,
event::{ElementState, Event, KeyEvent, Modifiers},
keyboard::{
Key, KeyCode, KeyLocation, ModifiersKeys, ModifiersState, NativeKey, NativeKeyCode,
},
platform::{modifier_supplement::KeyEventExtModifierSupplement, scancode::KeyCodeExtScancode},
platform_impl::platform::{
ffi,
util::{get_kbd_type, Never},
},
};
#[derive(Debug)]
pub(crate) enum EventWrapper {
StaticEvent(Event<Never>),
EventProxy(EventProxy),
}
#[derive(Debug)]
pub(crate) enum EventProxy {
DpiChangedProxy {
window: Id<WinitWindow>,
suggested_size: LogicalSize<f64>,
scale_factor: f64,
},
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct KeyEventExtra {
pub text_with_all_modifiers: Option<SmolStr>,
pub key_without_modifiers: Key,
}
impl KeyEventExtModifierSupplement for KeyEvent {
fn text_with_all_modifiers(&self) -> Option<&str> {
self.platform_specific
.text_with_all_modifiers
.as_ref()
.map(|s| s.as_str())
}
fn key_without_modifiers(&self) -> Key {
self.platform_specific.key_without_modifiers.clone()
}
}
pub fn get_modifierless_char(scancode: u16) -> Key {
let mut string = [0; 16];
let input_source;
let layout;
unsafe {
input_source = ffi::TISCopyCurrentKeyboardLayoutInputSource();
if input_source.is_null() {
log::error!("`TISCopyCurrentKeyboardLayoutInputSource` returned null ptr");
return Key::Unidentified(NativeKey::MacOS(scancode));
}
let layout_data =
ffi::TISGetInputSourceProperty(input_source, ffi::kTISPropertyUnicodeKeyLayoutData);
if layout_data.is_null() {
CFRelease(input_source as *mut c_void);
log::error!("`TISGetInputSourceProperty` returned null ptr");
return Key::Unidentified(NativeKey::MacOS(scancode));
}
layout = CFDataGetBytePtr(layout_data as CFDataRef) as *const ffi::UCKeyboardLayout;
}
let keyboard_type = get_kbd_type();
let mut result_len = 0;
let mut dead_keys = 0;
let modifiers = 0;
let translate_result = unsafe {
ffi::UCKeyTranslate(
layout,
scancode,
ffi::kUCKeyActionDisplay,
modifiers,
keyboard_type as u32,
ffi::kUCKeyTranslateNoDeadKeysMask,
&mut dead_keys,
string.len() as ffi::UniCharCount,
&mut result_len,
string.as_mut_ptr(),
)
};
unsafe {
CFRelease(input_source as *mut c_void);
}
if translate_result != 0 {
log::error!(
"`UCKeyTranslate` returned with the non-zero value: {}",
translate_result
);
return Key::Unidentified(NativeKey::MacOS(scancode));
}
if result_len == 0 {
log::error!("`UCKeyTranslate` was succesful but gave a string of 0 length.");
return Key::Unidentified(NativeKey::MacOS(scancode));
}
let chars = String::from_utf16_lossy(&string[0..result_len as usize]);
Key::Character(SmolStr::new(chars))
}
fn get_logical_key_char(ns_event: &NSEvent, modifierless_chars: &str) -> Key {
let string = ns_event
.charactersIgnoringModifiers()
.map(|s| s.to_string())
.unwrap_or_else(String::new);
if string.is_empty() {
// Probably a dead key
let first_char = modifierless_chars.chars().next();
return Key::Dead(first_char);
}
Key::Character(SmolStr::new(string))
}
/// Create `KeyEvent` for the given `NSEvent`.
///
/// This function shouldn't be called when the IME input is in process.
pub(crate) fn create_key_event(
ns_event: &NSEvent,
is_press: bool,
is_repeat: bool,
key_override: Option<KeyCode>,
) -> KeyEvent {
use ElementState::{Pressed, Released};
let state = if is_press { Pressed } else { Released };
let scancode = ns_event.key_code();
let mut physical_key = key_override.unwrap_or_else(|| KeyCode::from_scancode(scancode as u32));
let text_with_all_modifiers: Option<SmolStr> = if key_override.is_some() {
None
} else {
let characters = ns_event
.characters()
.map(|s| s.to_string())
.unwrap_or_else(String::new);
if characters.is_empty() {
None
} else {
if matches!(physical_key, KeyCode::Unidentified(_)) {
// The key may be one of the funky function keys
physical_key = extra_function_key_to_code(scancode, &characters);
}
Some(SmolStr::new(characters))
}
};
let key_from_code = code_to_key(physical_key, scancode);
let (logical_key, key_without_modifiers) = if matches!(key_from_code, Key::Unidentified(_)) {
let key_without_modifiers = get_modifierless_char(scancode);
let modifiers = NSEvent::modifierFlags(ns_event);
let has_ctrl = modifiers.contains(NSEventModifierFlags::NSControlKeyMask);
let logical_key = match text_with_all_modifiers.as_ref() {
// Only checking for ctrl here, not checking for alt because we DO want to
// include its effect in the key. For example if -on the Germay layout- one
// presses alt+8, the logical key should be "{"
// Also not checking if this is a release event because then this issue would
// still affect the key release.
Some(text) if !has_ctrl => Key::Character(text.clone()),
_ => {
let modifierless_chars = match key_without_modifiers.as_ref() {
Key::Character(ch) => ch,
_ => "",
};
get_logical_key_char(ns_event, modifierless_chars)
}
};
(logical_key, key_without_modifiers)
} else {
(key_from_code.clone(), key_from_code)
};
let text = if is_press {
logical_key.to_text().map(SmolStr::new)
} else {
None
};
let location = code_to_location(physical_key);
KeyEvent {
location,
logical_key,
physical_key,
repeat: is_repeat,
state,
text,
platform_specific: KeyEventExtra {
key_without_modifiers,
text_with_all_modifiers,
},
}
}
pub fn code_to_key(code: KeyCode, scancode: u16) -> Key {
match code {
KeyCode::Enter => Key::Enter,
KeyCode::Tab => Key::Tab,
KeyCode::Space => Key::Space,
KeyCode::Backspace => Key::Backspace,
KeyCode::Escape => Key::Escape,
KeyCode::SuperRight => Key::Super,
KeyCode::SuperLeft => Key::Super,
KeyCode::ShiftLeft => Key::Shift,
KeyCode::AltLeft => Key::Alt,
KeyCode::ControlLeft => Key::Control,
KeyCode::ShiftRight => Key::Shift,
KeyCode::AltRight => Key::Alt,
KeyCode::ControlRight => Key::Control,
KeyCode::NumLock => Key::NumLock,
KeyCode::AudioVolumeUp => Key::AudioVolumeUp,
KeyCode::AudioVolumeDown => Key::AudioVolumeDown,
// Other numpad keys all generate text on macOS (if I understand correctly)
KeyCode::NumpadEnter => Key::Enter,
KeyCode::F1 => Key::F1,
KeyCode::F2 => Key::F2,
KeyCode::F3 => Key::F3,
KeyCode::F4 => Key::F4,
KeyCode::F5 => Key::F5,
KeyCode::F6 => Key::F6,
KeyCode::F7 => Key::F7,
KeyCode::F8 => Key::F8,
KeyCode::F9 => Key::F9,
KeyCode::F10 => Key::F10,
KeyCode::F11 => Key::F11,
KeyCode::F12 => Key::F12,
KeyCode::F13 => Key::F13,
KeyCode::F14 => Key::F14,
KeyCode::F15 => Key::F15,
KeyCode::F16 => Key::F16,
KeyCode::F17 => Key::F17,
KeyCode::F18 => Key::F18,
KeyCode::F19 => Key::F19,
KeyCode::F20 => Key::F20,
KeyCode::Insert => Key::Insert,
KeyCode::Home => Key::Home,
KeyCode::PageUp => Key::PageUp,
KeyCode::Delete => Key::Delete,
KeyCode::End => Key::End,
KeyCode::PageDown => Key::PageDown,
KeyCode::ArrowLeft => Key::ArrowLeft,
KeyCode::ArrowRight => Key::ArrowRight,
KeyCode::ArrowDown => Key::ArrowDown,
KeyCode::ArrowUp => Key::ArrowUp,
_ => Key::Unidentified(NativeKey::MacOS(scancode)),
}
}
pub fn code_to_location(code: KeyCode) -> KeyLocation {
match code {
KeyCode::SuperRight => KeyLocation::Right,
KeyCode::SuperLeft => KeyLocation::Left,
KeyCode::ShiftLeft => KeyLocation::Left,
KeyCode::AltLeft => KeyLocation::Left,
KeyCode::ControlLeft => KeyLocation::Left,
KeyCode::ShiftRight => KeyLocation::Right,
KeyCode::AltRight => KeyLocation::Right,
KeyCode::ControlRight => KeyLocation::Right,
KeyCode::NumLock => KeyLocation::Numpad,
KeyCode::NumpadDecimal => KeyLocation::Numpad,
KeyCode::NumpadMultiply => KeyLocation::Numpad,
KeyCode::NumpadAdd => KeyLocation::Numpad,
KeyCode::NumpadDivide => KeyLocation::Numpad,
KeyCode::NumpadEnter => KeyLocation::Numpad,
KeyCode::NumpadSubtract => KeyLocation::Numpad,
KeyCode::NumpadEqual => KeyLocation::Numpad,
KeyCode::Numpad0 => KeyLocation::Numpad,
KeyCode::Numpad1 => KeyLocation::Numpad,
KeyCode::Numpad2 => KeyLocation::Numpad,
KeyCode::Numpad3 => KeyLocation::Numpad,
KeyCode::Numpad4 => KeyLocation::Numpad,
KeyCode::Numpad5 => KeyLocation::Numpad,
KeyCode::Numpad6 => KeyLocation::Numpad,
KeyCode::Numpad7 => KeyLocation::Numpad,
KeyCode::Numpad8 => KeyLocation::Numpad,
KeyCode::Numpad9 => KeyLocation::Numpad,
_ => KeyLocation::Standard,
}
}
// While F1-F20 have scancodes we can match on, we have to check against UTF-16
// constants for the rest.
// https://developer.apple.com/documentation/appkit/1535851-function-key_unicodes?preferredLanguage=occ
pub fn extra_function_key_to_code(scancode: u16, string: &str) -> KeyCode {
if let Some(ch) = string.encode_utf16().next() {
match ch {
0xf718 => KeyCode::F21,
0xf719 => KeyCode::F22,
0xf71a => KeyCode::F23,
0xf71b => KeyCode::F24,
_ => KeyCode::Unidentified(NativeKeyCode::MacOS(scancode)),
}
} else {
KeyCode::Unidentified(NativeKeyCode::MacOS(scancode))
}
}
pub(super) fn event_mods(event: &NSEvent) -> Modifiers {
let flags = event.modifierFlags();
let mut state = ModifiersState::empty();
let mut pressed_mods = ModifiersKeys::empty();
state.set(
ModifiersState::SHIFT,
flags.contains(NSEventModifierFlags::NSShiftKeyMask),
);
pressed_mods.set(ModifiersKeys::LSHIFT, event.lshift_pressed());
pressed_mods.set(ModifiersKeys::RSHIFT, event.rshift_pressed());
state.set(
ModifiersState::CONTROL,
flags.contains(NSEventModifierFlags::NSControlKeyMask),
);
pressed_mods.set(ModifiersKeys::LCONTROL, event.lctrl_pressed());
pressed_mods.set(ModifiersKeys::RCONTROL, event.rctrl_pressed());
state.set(
ModifiersState::ALT,
flags.contains(NSEventModifierFlags::NSAlternateKeyMask),
);
pressed_mods.set(ModifiersKeys::LALT, event.lalt_pressed());
pressed_mods.set(ModifiersKeys::RALT, event.ralt_pressed());
state.set(
ModifiersState::SUPER,
flags.contains(NSEventModifierFlags::NSCommandKeyMask),
);
pressed_mods.set(ModifiersKeys::LSUPER, event.lcmd_pressed());
pressed_mods.set(ModifiersKeys::RSUPER, event.rcmd_pressed());
Modifiers {
state,
pressed_mods,
}
}
impl KeyCodeExtScancode for KeyCode {
fn to_scancode(self) -> Option<u32> {
match self {
KeyCode::KeyA => Some(0x00),
KeyCode::KeyS => Some(0x01),
KeyCode::KeyD => Some(0x02),
KeyCode::KeyF => Some(0x03),
KeyCode::KeyH => Some(0x04),
KeyCode::KeyG => Some(0x05),
KeyCode::KeyZ => Some(0x06),
KeyCode::KeyX => Some(0x07),
KeyCode::KeyC => Some(0x08),
KeyCode::KeyV => Some(0x09),
KeyCode::KeyB => Some(0x0b),
KeyCode::KeyQ => Some(0x0c),
KeyCode::KeyW => Some(0x0d),
KeyCode::KeyE => Some(0x0e),
KeyCode::KeyR => Some(0x0f),
KeyCode::KeyY => Some(0x10),
KeyCode::KeyT => Some(0x11),
KeyCode::Digit1 => Some(0x12),
KeyCode::Digit2 => Some(0x13),
KeyCode::Digit3 => Some(0x14),
KeyCode::Digit4 => Some(0x15),
KeyCode::Digit6 => Some(0x16),
KeyCode::Digit5 => Some(0x17),
KeyCode::Equal => Some(0x18),
KeyCode::Digit9 => Some(0x19),
KeyCode::Digit7 => Some(0x1a),
KeyCode::Minus => Some(0x1b),
KeyCode::Digit8 => Some(0x1c),
KeyCode::Digit0 => Some(0x1d),
KeyCode::BracketRight => Some(0x1e),
KeyCode::KeyO => Some(0x1f),
KeyCode::KeyU => Some(0x20),
KeyCode::BracketLeft => Some(0x21),
KeyCode::KeyI => Some(0x22),
KeyCode::KeyP => Some(0x23),
KeyCode::Enter => Some(0x24),
KeyCode::KeyL => Some(0x25),
KeyCode::KeyJ => Some(0x26),
KeyCode::Quote => Some(0x27),
KeyCode::KeyK => Some(0x28),
KeyCode::Semicolon => Some(0x29),
KeyCode::Backslash => Some(0x2a),
KeyCode::Comma => Some(0x2b),
KeyCode::Slash => Some(0x2c),
KeyCode::KeyN => Some(0x2d),
KeyCode::KeyM => Some(0x2e),
KeyCode::Period => Some(0x2f),
KeyCode::Tab => Some(0x30),
KeyCode::Space => Some(0x31),
KeyCode::Backquote => Some(0x32),
KeyCode::Backspace => Some(0x33),
KeyCode::Escape => Some(0x35),
KeyCode::SuperRight => Some(0x36),
KeyCode::SuperLeft => Some(0x37),
KeyCode::ShiftLeft => Some(0x38),
KeyCode::AltLeft => Some(0x3a),
KeyCode::ControlLeft => Some(0x3b),
KeyCode::ShiftRight => Some(0x3c),
KeyCode::AltRight => Some(0x3d),
KeyCode::ControlRight => Some(0x3e),
KeyCode::F17 => Some(0x40),
KeyCode::NumpadDecimal => Some(0x41),
KeyCode::NumpadMultiply => Some(0x43),
KeyCode::NumpadAdd => Some(0x45),
KeyCode::NumLock => Some(0x47),
KeyCode::AudioVolumeUp => Some(0x49),
KeyCode::AudioVolumeDown => Some(0x4a),
KeyCode::NumpadDivide => Some(0x4b),
KeyCode::NumpadEnter => Some(0x4c),
KeyCode::NumpadSubtract => Some(0x4e),
KeyCode::F18 => Some(0x4f),
KeyCode::F19 => Some(0x50),
KeyCode::NumpadEqual => Some(0x51),
KeyCode::Numpad0 => Some(0x52),
KeyCode::Numpad1 => Some(0x53),
KeyCode::Numpad2 => Some(0x54),
KeyCode::Numpad3 => Some(0x55),
KeyCode::Numpad4 => Some(0x56),
KeyCode::Numpad5 => Some(0x57),
KeyCode::Numpad6 => Some(0x58),
KeyCode::Numpad7 => Some(0x59),
KeyCode::F20 => Some(0x5a),
KeyCode::Numpad8 => Some(0x5b),
KeyCode::Numpad9 => Some(0x5c),
KeyCode::IntlYen => Some(0x5d),
KeyCode::F5 => Some(0x60),
KeyCode::F6 => Some(0x61),
KeyCode::F7 => Some(0x62),
KeyCode::F3 => Some(0x63),
KeyCode::F8 => Some(0x64),
KeyCode::F9 => Some(0x65),
KeyCode::F11 => Some(0x67),
KeyCode::F13 => Some(0x69),
KeyCode::F16 => Some(0x6a),
KeyCode::F14 => Some(0x6b),
KeyCode::F10 => Some(0x6d),
KeyCode::F12 => Some(0x6f),
KeyCode::F15 => Some(0x71),
KeyCode::Insert => Some(0x72),
KeyCode::Home => Some(0x73),
KeyCode::PageUp => Some(0x74),
KeyCode::Delete => Some(0x75),
KeyCode::F4 => Some(0x76),
KeyCode::End => Some(0x77),
KeyCode::F2 => Some(0x78),
KeyCode::PageDown => Some(0x79),
KeyCode::F1 => Some(0x7a),
KeyCode::ArrowLeft => Some(0x7b),
KeyCode::ArrowRight => Some(0x7c),
KeyCode::ArrowDown => Some(0x7d),
KeyCode::ArrowUp => Some(0x7e),
_ => None,
}
}
fn from_scancode(scancode: u32) -> KeyCode {
match scancode {
0x00 => KeyCode::KeyA,
0x01 => KeyCode::KeyS,
0x02 => KeyCode::KeyD,
0x03 => KeyCode::KeyF,
0x04 => KeyCode::KeyH,
0x05 => KeyCode::KeyG,
0x06 => KeyCode::KeyZ,
0x07 => KeyCode::KeyX,
0x08 => KeyCode::KeyC,
0x09 => KeyCode::KeyV,
//0x0a => World 1,
0x0b => KeyCode::KeyB,
0x0c => KeyCode::KeyQ,
0x0d => KeyCode::KeyW,
0x0e => KeyCode::KeyE,
0x0f => KeyCode::KeyR,
0x10 => KeyCode::KeyY,
0x11 => KeyCode::KeyT,
0x12 => KeyCode::Digit1,
0x13 => KeyCode::Digit2,
0x14 => KeyCode::Digit3,
0x15 => KeyCode::Digit4,
0x16 => KeyCode::Digit6,
0x17 => KeyCode::Digit5,
0x18 => KeyCode::Equal,
0x19 => KeyCode::Digit9,
0x1a => KeyCode::Digit7,
0x1b => KeyCode::Minus,
0x1c => KeyCode::Digit8,
0x1d => KeyCode::Digit0,
0x1e => KeyCode::BracketRight,
0x1f => KeyCode::KeyO,
0x20 => KeyCode::KeyU,
0x21 => KeyCode::BracketLeft,
0x22 => KeyCode::KeyI,
0x23 => KeyCode::KeyP,
0x24 => KeyCode::Enter,
0x25 => KeyCode::KeyL,
0x26 => KeyCode::KeyJ,
0x27 => KeyCode::Quote,
0x28 => KeyCode::KeyK,
0x29 => KeyCode::Semicolon,
0x2a => KeyCode::Backslash,
0x2b => KeyCode::Comma,
0x2c => KeyCode::Slash,
0x2d => KeyCode::KeyN,
0x2e => KeyCode::KeyM,
0x2f => KeyCode::Period,
0x30 => KeyCode::Tab,
0x31 => KeyCode::Space,
0x32 => KeyCode::Backquote,
0x33 => KeyCode::Backspace,
//0x34 => unknown,
0x35 => KeyCode::Escape,
0x36 => KeyCode::SuperRight,
0x37 => KeyCode::SuperLeft,
0x38 => KeyCode::ShiftLeft,
0x39 => KeyCode::CapsLock,
0x3a => KeyCode::AltLeft,
0x3b => KeyCode::ControlLeft,
0x3c => KeyCode::ShiftRight,
0x3d => KeyCode::AltRight,
0x3e => KeyCode::ControlRight,
0x3f => KeyCode::Fn,
0x40 => KeyCode::F17,
0x41 => KeyCode::NumpadDecimal,
//0x42 -> unknown,
0x43 => KeyCode::NumpadMultiply,
//0x44 => unknown,
0x45 => KeyCode::NumpadAdd,
//0x46 => unknown,
0x47 => KeyCode::NumLock,
//0x48 => KeyCode::NumpadClear,
// TODO: (Artur) for me, kVK_VolumeUp is 0x48
// macOS 10.11
// /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/Headers/Events.h
0x49 => KeyCode::AudioVolumeUp,
0x4a => KeyCode::AudioVolumeDown,
0x4b => KeyCode::NumpadDivide,
0x4c => KeyCode::NumpadEnter,
//0x4d => unknown,
0x4e => KeyCode::NumpadSubtract,
0x4f => KeyCode::F18,
0x50 => KeyCode::F19,
0x51 => KeyCode::NumpadEqual,
0x52 => KeyCode::Numpad0,
0x53 => KeyCode::Numpad1,
0x54 => KeyCode::Numpad2,
0x55 => KeyCode::Numpad3,
0x56 => KeyCode::Numpad4,
0x57 => KeyCode::Numpad5,
0x58 => KeyCode::Numpad6,
0x59 => KeyCode::Numpad7,
0x5a => KeyCode::F20,
0x5b => KeyCode::Numpad8,
0x5c => KeyCode::Numpad9,
0x5d => KeyCode::IntlYen,
//0x5e => JIS Ro,
//0x5f => unknown,
0x60 => KeyCode::F5,
0x61 => KeyCode::F6,
0x62 => KeyCode::F7,
0x63 => KeyCode::F3,
0x64 => KeyCode::F8,
0x65 => KeyCode::F9,
//0x66 => JIS Eisuu (macOS),
0x67 => KeyCode::F11,
//0x68 => JIS Kanna (macOS),
0x69 => KeyCode::F13,
0x6a => KeyCode::F16,
0x6b => KeyCode::F14,
//0x6c => unknown,
0x6d => KeyCode::F10,
//0x6e => unknown,
0x6f => KeyCode::F12,
//0x70 => unknown,
0x71 => KeyCode::F15,
0x72 => KeyCode::Insert,
0x73 => KeyCode::Home,
0x74 => KeyCode::PageUp,
0x75 => KeyCode::Delete,
0x76 => KeyCode::F4,
0x77 => KeyCode::End,
0x78 => KeyCode::F2,
0x79 => KeyCode::PageDown,
0x7a => KeyCode::F1,
0x7b => KeyCode::ArrowLeft,
0x7c => KeyCode::ArrowRight,
0x7d => KeyCode::ArrowDown,
0x7e => KeyCode::ArrowUp,
//0x7f => unknown,
// 0xA is the caret (^) an macOS's German QERTZ layout. This key is at the same location as
// backquote (`) on Windows' US layout.
0xa => KeyCode::Backquote,
_ => KeyCode::Unidentified(NativeKeyCode::MacOS(scancode as u16)),
}
}
}
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