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KeyCodeConverter.m
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134 lines (115 loc) · 4.64 KB
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#import "KeyCodeConverter.h"
#import <Carbon/Carbon.h>
@implementation KeyCodeConverter
+ (CGKeyCode)toKeyCode:(NSString *)character {
return keyCodeForChar([[character lowercaseString] characterAtIndex:0]);
}
// Mapping from https://github.com/davedelong/DDHotKey/
+ (NSDictionary *)fixKeys {
static NSDictionary *keyCodeMap = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
keyCodeMap = @{
@"↩":@(kVK_Return),
@"⇥":@(kVK_Tab),
@"⎵":@(kVK_Space),
@"⌫":@(kVK_Delete),
@"⎋":@(kVK_Escape),
@"⌘":@(kVK_Command),
@"⇧":@(kVK_Shift),
@"⇪":@(kVK_CapsLock),
@"⌥":@(kVK_Option),
@"⌃":@(kVK_Control),
@"⇧":@(kVK_RightShift),
@"⌥":@(kVK_RightOption),
@"⌃":@(kVK_RightControl),
@"🔊":@(kVK_VolumeUp),
@"🔈":@(kVK_VolumeDown),
@"🔇":@(kVK_Mute),
@"\u2318":@(kVK_Function),
@"F1":@(kVK_F1),
@"F2":@(kVK_F2),
@"F3":@(kVK_F3),
@"F4":@(kVK_F4),
@"F5":@(kVK_F5),
@"F6":@(kVK_F6),
@"F7":@(kVK_F7),
@"F8":@(kVK_F8),
@"F9":@(kVK_F9),
@"F10":@(kVK_F10),
@"F11":@(kVK_F11),
@"F12":@(kVK_F12),
@"F13":@(kVK_F13),
@"F14":@(kVK_F14),
@"F15":@(kVK_F15),
@"F16":@(kVK_F16),
@"F17":@(kVK_F17),
@"F18":@(kVK_F18),
@"F19":@(kVK_F19),
@"F20":@(kVK_F20),
@"⌦":@(kVK_ForwardDelete),
@"↖":@(kVK_Home),
@"↘":@(kVK_End),
@"⇞":@(kVK_PageUp),
@"⇟":@(kVK_PageDown),
@"←":@(kVK_LeftArrow),
@"→":@(kVK_RightArrow),
@"↓":@(kVK_DownArrow),
@"↑":@(kVK_UpArrow)
};
});
return keyCodeMap;
}
// Uses code from:
// http://stackoverflow.com/questions/1918841/how-to-convert-ascii-character-to-cgkeycode
static CGKeyCode keyCodeForChar(const char c) {
static CFMutableDictionaryRef charToCodeDict = NULL;
CGKeyCode code;
UniChar character = c;
CFStringRef charStr = NULL;
if (charToCodeDict == NULL) {
size_t i;
charToCodeDict = CFDictionaryCreateMutable(kCFAllocatorDefault,
128,
&kCFCopyStringDictionaryKeyCallBacks,
NULL);
if (charToCodeDict == NULL) {
return UINT16_MAX;
}
for (i = 0; i < 128; ++i) {
CFStringRef string = createStringForKey((CGKeyCode)i);
if (string != NULL) {
CFDictionaryAddValue(charToCodeDict, string, (const void *)i);
CFRelease(string);
}
}
}
charStr = CFStringCreateWithCharacters(kCFAllocatorDefault, &character, 1);
if (!CFDictionaryGetValueIfPresent(charToCodeDict, charStr, (const void **)&code)) {
code = UINT16_MAX;
}
CFRelease(charStr);
return code;
}
static CFStringRef createStringForKey(CGKeyCode keyCode) {
TISInputSourceRef currentKeyboard = TISCopyCurrentKeyboardInputSource();
CFDataRef layoutData = TISGetInputSourceProperty(currentKeyboard,
kTISPropertyUnicodeKeyLayoutData);
const UCKeyboardLayout *keyboardLayout = (const UCKeyboardLayout *)CFDataGetBytePtr(layoutData);
UInt32 keysDown = 0;
UniChar chars[4];
UniCharCount realLength;
UCKeyTranslate(keyboardLayout,
keyCode,
kUCKeyActionDisplay,
0,
LMGetKbdType(),
kUCKeyTranslateNoDeadKeysBit,
&keysDown,
sizeof(chars) / sizeof(chars[0]),
&realLength,
chars);
CFRelease(currentKeyboard);
return CFStringCreateWithCharacters(kCFAllocatorDefault, chars, 1);
}
@end