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Querying macOS if a key is pressed
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| import CoreGraphics | |
| extension CGKeyCode | |
| { | |
| /* | |
| * From Events.h in Carbon.framework | |
| * Summary: | |
| * Virtual keycodes | |
| * | |
| * Discussion: | |
| * These constants are the virtual keycodes defined originally in | |
| * Inside Mac Volume V, pg. V-191. They identify physical keys on a | |
| * keyboard. Those constants with "ANSI" in the name are labeled | |
| * according to the key position on an ANSI-standard US keyboard. | |
| * For example, kVK_ANSI_A indicates the virtual keycode for the key | |
| * with the letter 'A' in the US keyboard layout. Other keyboard | |
| * layouts may have the 'A' key label on a different physical key; | |
| * in this case, pressing 'A' will generate a different virtual | |
| * keycode. | |
| */ | |
| static let kVK_ANSI_A : CGKeyCode = 0x00 | |
| static let kVK_ANSI_S : CGKeyCode = 0x01 | |
| static let kVK_ANSI_D : CGKeyCode = 0x02 | |
| static let kVK_ANSI_F : CGKeyCode = 0x03 | |
| static let kVK_ANSI_H : CGKeyCode = 0x04 | |
| static let kVK_ANSI_G : CGKeyCode = 0x05 | |
| static let kVK_ANSI_Z : CGKeyCode = 0x06 | |
| static let kVK_ANSI_X : CGKeyCode = 0x07 | |
| static let kVK_ANSI_C : CGKeyCode = 0x08 | |
| static let kVK_ANSI_V : CGKeyCode = 0x09 | |
| static let kVK_ANSI_B : CGKeyCode = 0x0B | |
| static let kVK_ANSI_Q : CGKeyCode = 0x0C | |
| static let kVK_ANSI_W : CGKeyCode = 0x0D | |
| static let kVK_ANSI_E : CGKeyCode = 0x0E | |
| static let kVK_ANSI_R : CGKeyCode = 0x0F | |
| static let kVK_ANSI_Y : CGKeyCode = 0x10 | |
| static let kVK_ANSI_T : CGKeyCode = 0x11 | |
| static let kVK_ANSI_1 : CGKeyCode = 0x12 | |
| static let kVK_ANSI_2 : CGKeyCode = 0x13 | |
| static let kVK_ANSI_3 : CGKeyCode = 0x14 | |
| static let kVK_ANSI_4 : CGKeyCode = 0x15 | |
| static let kVK_ANSI_6 : CGKeyCode = 0x16 | |
| static let kVK_ANSI_5 : CGKeyCode = 0x17 | |
| static let kVK_ANSI_Equal : CGKeyCode = 0x18 | |
| static let kVK_ANSI_9 : CGKeyCode = 0x19 | |
| static let kVK_ANSI_7 : CGKeyCode = 0x1A | |
| static let kVK_ANSI_Minus : CGKeyCode = 0x1B | |
| static let kVK_ANSI_8 : CGKeyCode = 0x1C | |
| static let kVK_ANSI_0 : CGKeyCode = 0x1D | |
| static let kVK_ANSI_RightBracket : CGKeyCode = 0x1E | |
| static let kVK_ANSI_O : CGKeyCode = 0x1F | |
| static let kVK_ANSI_U : CGKeyCode = 0x20 | |
| static let kVK_ANSI_LeftBracket : CGKeyCode = 0x21 | |
| static let kVK_ANSI_I : CGKeyCode = 0x22 | |
| static let kVK_ANSI_P : CGKeyCode = 0x23 | |
| static let kVK_ANSI_L : CGKeyCode = 0x25 | |
| static let kVK_ANSI_J : CGKeyCode = 0x26 | |
| static let kVK_ANSI_Quote : CGKeyCode = 0x27 | |
| static let kVK_ANSI_K : CGKeyCode = 0x28 | |
| static let kVK_ANSI_Semicolon : CGKeyCode = 0x29 | |
| static let kVK_ANSI_Backslash : CGKeyCode = 0x2A | |
| static let kVK_ANSI_Comma : CGKeyCode = 0x2B | |
| static let kVK_ANSI_Slash : CGKeyCode = 0x2C | |
| static let kVK_ANSI_N : CGKeyCode = 0x2D | |
| static let kVK_ANSI_M : CGKeyCode = 0x2E | |
| static let kVK_ANSI_Period : CGKeyCode = 0x2F | |
| static let kVK_ANSI_Grave : CGKeyCode = 0x32 | |
| static let kVK_ANSI_KeypadDecimal : CGKeyCode = 0x41 | |
| static let kVK_ANSI_KeypadMultiply : CGKeyCode = 0x43 | |
| static let kVK_ANSI_KeypadPlus : CGKeyCode = 0x45 | |
| static let kVK_ANSI_KeypadClear : CGKeyCode = 0x47 | |
| static let kVK_ANSI_KeypadDivide : CGKeyCode = 0x4B | |
| static let kVK_ANSI_KeypadEnter : CGKeyCode = 0x4C | |
| static let kVK_ANSI_KeypadMinus : CGKeyCode = 0x4E | |
| static let kVK_ANSI_KeypadEquals : CGKeyCode = 0x51 | |
| static let kVK_ANSI_Keypad0 : CGKeyCode = 0x52 | |
| static let kVK_ANSI_Keypad1 : CGKeyCode = 0x53 | |
| static let kVK_ANSI_Keypad2 : CGKeyCode = 0x54 | |
| static let kVK_ANSI_Keypad3 : CGKeyCode = 0x55 | |
| static let kVK_ANSI_Keypad4 : CGKeyCode = 0x56 | |
| static let kVK_ANSI_Keypad5 : CGKeyCode = 0x57 | |
| static let kVK_ANSI_Keypad6 : CGKeyCode = 0x58 | |
| static let kVK_ANSI_Keypad7 : CGKeyCode = 0x59 | |
| static let kVK_ANSI_Keypad8 : CGKeyCode = 0x5B | |
| static let kVK_ANSI_Keypad9 : CGKeyCode = 0x5C | |
| // keycodes for keys that are independent of keyboard layout | |
| static let kVK_Return : CGKeyCode = 0x24 | |
| static let kVK_Tab : CGKeyCode = 0x30 | |
| static let kVK_Space : CGKeyCode = 0x31 | |
| static let kVK_Delete : CGKeyCode = 0x33 | |
| static let kVK_Escape : CGKeyCode = 0x35 | |
| static let kVK_Command : CGKeyCode = 0x37 | |
| static let kVK_Shift : CGKeyCode = 0x38 | |
| static let kVK_CapsLock : CGKeyCode = 0x39 | |
| static let kVK_Option : CGKeyCode = 0x3A | |
| static let kVK_Control : CGKeyCode = 0x3B | |
| static let kVK_RightCommand : CGKeyCode = 0x36 // Out of order | |
| static let kVK_RightShift : CGKeyCode = 0x3C | |
| static let kVK_RightOption : CGKeyCode = 0x3D | |
| static let kVK_RightControl : CGKeyCode = 0x3E | |
| static let kVK_Function : CGKeyCode = 0x3F | |
| static let kVK_F17 : CGKeyCode = 0x40 | |
| static let kVK_VolumeUp : CGKeyCode = 0x48 | |
| static let kVK_VolumeDown : CGKeyCode = 0x49 | |
| static let kVK_Mute : CGKeyCode = 0x4A | |
| static let kVK_F18 : CGKeyCode = 0x4F | |
| static let kVK_F19 : CGKeyCode = 0x50 | |
| static let kVK_F20 : CGKeyCode = 0x5A | |
| static let kVK_F5 : CGKeyCode = 0x60 | |
| static let kVK_F6 : CGKeyCode = 0x61 | |
| static let kVK_F7 : CGKeyCode = 0x62 | |
| static let kVK_F3 : CGKeyCode = 0x63 | |
| static let kVK_F8 : CGKeyCode = 0x64 | |
| static let kVK_F9 : CGKeyCode = 0x65 | |
| static let kVK_F11 : CGKeyCode = 0x67 | |
| static let kVK_F13 : CGKeyCode = 0x69 | |
| static let kVK_F16 : CGKeyCode = 0x6A | |
| static let kVK_F14 : CGKeyCode = 0x6B | |
| static let kVK_F10 : CGKeyCode = 0x6D | |
| static let kVK_F12 : CGKeyCode = 0x6F | |
| static let kVK_F15 : CGKeyCode = 0x71 | |
| static let kVK_Help : CGKeyCode = 0x72 | |
| static let kVK_Home : CGKeyCode = 0x73 | |
| static let kVK_PageUp : CGKeyCode = 0x74 | |
| static let kVK_ForwardDelete : CGKeyCode = 0x75 | |
| static let kVK_F4 : CGKeyCode = 0x76 | |
| static let kVK_End : CGKeyCode = 0x77 | |
| static let kVK_F2 : CGKeyCode = 0x78 | |
| static let kVK_PageDown : CGKeyCode = 0x79 | |
| static let kVK_F1 : CGKeyCode = 0x7A | |
| static let kVK_LeftArrow : CGKeyCode = 0x7B | |
| static let kVK_RightArrow : CGKeyCode = 0x7C | |
| static let kVK_DownArrow : CGKeyCode = 0x7D | |
| static let kVK_UpArrow : CGKeyCode = 0x7E | |
| // ISO keyboards only | |
| static let kVK_ISO_Section : CGKeyCode = 0x0A | |
| // JIS keyboards only | |
| static let kVK_JIS_Yen : CGKeyCode = 0x5D | |
| static let kVK_JIS_Underscore : CGKeyCode = 0x5E | |
| static let kVK_JIS_KeypadComma : CGKeyCode = 0x5F | |
| static let kVK_JIS_Eisu : CGKeyCode = 0x66 | |
| static let kVK_JIS_Kana : CGKeyCode = 0x68 | |
| var isModifier: Bool { | |
| return (.kVK_RightCommand...(.kVK_Function)).contains(self) | |
| } | |
| var baseModifier: CGKeyCode? | |
| { | |
| if (.kVK_Command...(.kVK_Control)).contains(self) | |
| || self == .kVK_Function | |
| { | |
| return self | |
| } | |
| switch self | |
| { | |
| case .kVK_RightShift: return .kVK_Shift | |
| case .kVK_RightCommand: return .kVK_Command | |
| case .kVK_RightOption: return .kVK_Option | |
| case .kVK_RightControl: return .kVK_Control | |
| default: return nil | |
| } | |
| } | |
| var isPressed: Bool { | |
| CGEventSource.keyState(.combinedSessionState, key: self) | |
| } | |
| } |
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