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keyboard.go
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// +build darwin
package userinput
// #cgo CFLAGS: -x objective-c
// #cgo LDFLAGS: -framework Cocoa
// #include <AppKit/NSEvent.h>
/*
extern void * CallbackHandler(CGEventTapProxy proxy,
CGEventType type,
CGEventRef event,
void *refcon);
*/
import "C"
import "unsafe"
const (
KCGEventKeyDown = C.kCGEventKeyDown
KCGKeyboardEventKeycode = C.kCGKeyboardEventKeycode
)
// Event Types
// https://developer.apple.com/library/mac/documentation/Carbon/Reference/QuartzEventServicesRef/Reference/reference.html#//apple_ref/c/tdef/CGEventType
const (
KCGEventNull = C.kCGEventNull
KCGEventLeftMouseDown = C.kCGEventLeftMouseDown
KCGEventLeftMouseUp = C.kCGEventLeftMouseUp
KCGEventRightMouseDown = C.kCGEventRightMouseDown
KCGEventRightMouseUp = C.kCGEventRightMouseUp
KCGEventMouseMoved = C.kCGEventMouseMoved
// KCGEventLeftMouseDragged = NX_LMOUSEDRAGGED,
// KCGEventRightMouseDragged = NX_RMOUSEDRAGGED,
// KCGEventKeyDown = NX_KEYDOWN,
// KCGEventKeyUp = NX_KEYUP,
// KCGEventFlagsChanged = NX_FLAGSCHANGED,
// KCGEventScrollWheel = NX_SCROLLWHEELMOVED,
// KCGEventTabletPointer = NX_TABLETPOINTER,
// KCGEventTabletProximity = NX_TABLETPROXIMITY,
// KCGEventOtherMouseDown = NX_OMOUSEDOWN,
// KCGEventOtherMouseUp = NX_OMOUSEUP,
// KCGEventOtherMouseDragged = NX_OMOUSEDRAGGED,
// KCGEventTapDisabledByTimeout = 0xFFFFFFFE,
// KCGEventTapDisabledByUserInput = 0xFFFFFFFF
)
// Events.h
const (
KVK_ANSI_A = 0x00
KVK_ANSI_S = 0x01
KVK_ANSI_D = 0x02
KVK_ANSI_F = 0x03
KVK_ANSI_H = 0x04
KVK_ANSI_G = 0x05
KVK_ANSI_Z = 0x06
KVK_ANSI_X = 0x07
KVK_ANSI_C = 0x08
KVK_ANSI_V = 0x09
KVK_ANSI_B = 0x0B
KVK_ANSI_Q = 0x0C
KVK_ANSI_W = 0x0D
KVK_ANSI_E = 0x0E
KVK_ANSI_R = 0x0F
KVK_ANSI_Y = 0x10
KVK_ANSI_T = 0x11
KVK_ANSI_1 = 0x12
KVK_ANSI_2 = 0x13
KVK_ANSI_3 = 0x14
KVK_ANSI_4 = 0x15
KVK_ANSI_6 = 0x16
KVK_ANSI_5 = 0x17
KVK_ANSI_Equal = 0x18
KVK_ANSI_9 = 0x19
KVK_ANSI_7 = 0x1A
KVK_ANSI_Minus = 0x1B
KVK_ANSI_8 = 0x1C
KVK_ANSI_0 = 0x1D
KVK_ANSI_RightBracket = 0x1E
KVK_ANSI_O = 0x1F
KVK_ANSI_U = 0x20
KVK_ANSI_LeftBracket = 0x21
KVK_ANSI_I = 0x22
KVK_ANSI_P = 0x23
KVK_ANSI_L = 0x25
KVK_ANSI_J = 0x26
KVK_ANSI_Quote = 0x27
KVK_ANSI_K = 0x28
KVK_ANSI_Semicolon = 0x29
KVK_ANSI_Backslash = 0x2A
KVK_ANSI_Comma = 0x2B
KVK_ANSI_Slash = 0x2C
KVK_ANSI_N = 0x2D
KVK_ANSI_M = 0x2E
KVK_ANSI_Period = 0x2F
KVK_ANSI_Grave = 0x32
KVK_ANSI_KeypadDecimal = 0x41
KVK_ANSI_KeypadMultiply = 0x43
KVK_ANSI_KeypadPlus = 0x45
KVK_ANSI_KeypadClear = 0x47
KVK_ANSI_KeypadDivide = 0x4B
KVK_ANSI_KeypadEnter = 0x4C
KVK_ANSI_KeypadMinus = 0x4E
KVK_ANSI_KeypadEquals = 0x51
KVK_ANSI_Keypad0 = 0x52
KVK_ANSI_Keypad1 = 0x53
KVK_ANSI_Keypad2 = 0x54
KVK_ANSI_Keypad3 = 0x55
KVK_ANSI_Keypad4 = 0x56
KVK_ANSI_Keypad5 = 0x57
KVK_ANSI_Keypad6 = 0x58
KVK_ANSI_Keypad7 = 0x59
KVK_ANSI_Keypad8 = 0x5B
KVK_ANSI_Keypad9 = 0x5C
KVK_Return = 0x24
KVK_Tab = 0x30
KVK_Space = 0x31
KVK_Delete = 0x33
KVK_Escape = 0x35
KVK_Command = 0x37
KVK_Shift = 0x38
KVK_CapsLock = 0x39
KVK_Option = 0x3A
KVK_Control = 0x3B
KVK_RightShift = 0x3C
KVK_RightOption = 0x3D
KVK_RightControl = 0x3E
KVK_Function = 0x3F
KVK_F17 = 0x40
KVK_VolumeUp = 0x48
KVK_VolumeDown = 0x49
KVK_Mute = 0x4A
KVK_F18 = 0x4F
KVK_F19 = 0x50
KVK_F20 = 0x5A
KVK_F5 = 0x60
KVK_F6 = 0x61
KVK_F7 = 0x62
KVK_F3 = 0x63
KVK_F8 = 0x64
KVK_F9 = 0x65
KVK_F11 = 0x67
KVK_F13 = 0x69
KVK_F16 = 0x6A
KVK_F14 = 0x6B
KVK_F10 = 0x6D
KVK_F12 = 0x6F
KVK_F15 = 0x71
KVK_Help = 0x72
KVK_Home = 0x73
KVK_PageUp = 0x74
KVK_ForwardDelete = 0x75
KVK_F4 = 0x76
KVK_End = 0x77
KVK_F2 = 0x78
KVK_PageDown = 0x79
KVK_F1 = 0x7A
KVK_LeftArrow = 0x7B
KVK_RightArrow = 0x7C
KVK_DownArrow = 0x7D
KVK_UpArrow = 0x7E
)
type Event struct {
Type int
Keycode int
}
type KeyEvent struct {
Callback func(event Event)
}
var GlobalKeyboardEvent = &KeyEvent{}
func CGEventMaskBit( eventType C.CGEventType ) ( C.CGEventMask ) {
return ((C.CGEventMask)(1) << (eventType))
}
//export CallbackHandler
func CallbackHandler(proxy C.CGEventTapProxy, cType C.CGEventType, cEvent C.CGEventRef, refcon unsafe.Pointer ) (unsafe.Pointer) {
event := Event{}
event.Type = (int)(cType)
event.Keycode = int(C.CGEventGetIntegerValueField( cEvent, KCGKeyboardEventKeycode))
GlobalKeyboardEvent.Callback( event )
return nil
}
func (ui *KeyEvent ) MonitorKeyboard(callback func(event Event)) {
ui.Callback = callback
GlobalKeyboardEvent = ui
tap := C.CGEventTapCreate(
C.kCGSessionEventTap,
C.kCGHeadInsertEventTap,
C.kCGEventTapOptionListenOnly, //C.kCGEventTapOptionDefault,
CGEventMaskBit(C.kCGEventKeyDown),
C.CGEventTapCallBack(C.CallbackHandler),
nil)
loopsource := C.CFMachPortCreateRunLoopSource(C.kCFAllocatorDefault , tap, 0)
loop := C.CFRunLoopGetCurrent()
C.CFRunLoopAddSource(loop, loopsource, C.kCFRunLoopDefaultMode)
C.CGEventTapEnable(tap, true)
for {
C.CFRunLoopRunInMode(C.kCFRunLoopDefaultMode, 5, 0)
}
}