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#import <Carbon/Carbon.h>
// Théo Winterhalter
// https://stackoverflow.com/users/1275975/th%c3%a9o-winterhalter
// https://stackoverflow.com/questions/1918841/how-to-convert-ascii-character-to-cgkeycode/33584460#33584460
NSString* keyCodeToString(CGKeyCode keyCode)
{
TISInputSourceRef currentKeyboard = TISCopyCurrentKeyboardInputSource();
CFDataRef uchr =
(CFDataRef)TISGetInputSourceProperty(currentKeyboard,
kTISPropertyUnicodeKeyLayoutData);
const UCKeyboardLayout *keyboardLayout =
(const UCKeyboardLayout*)CFDataGetBytePtr(uchr);
if(keyboardLayout)
{
UInt32 deadKeyState = 0;
UniCharCount maxStringLength = 255;
UniCharCount actualStringLength = 0;
UniChar unicodeString[maxStringLength];
OSStatus status = UCKeyTranslate(keyboardLayout,
keyCode, kUCKeyActionDown, 0,
LMGetKbdType(), 0,
&deadKeyState,
maxStringLength,
&actualStringLength, unicodeString);
if (actualStringLength == 0 && deadKeyState)
{
status = UCKeyTranslate(keyboardLayout,
kVK_Space, kUCKeyActionDown, 0,
LMGetKbdType(), 0,
&deadKeyState,
maxStringLength,
&actualStringLength, unicodeString);
}
if(actualStringLength > 0 && status == noErr)
return [[NSString stringWithCharacters:unicodeString
length:(NSUInteger)actualStringLength] lowercaseString];
}
return nil;
}
NSNumber* charToKeyCode(const char c)
{
static NSMutableDictionary* dict = nil;
if (dict == nil)
{
dict = [NSMutableDictionary dictionary];
// For every keyCode
int i;
for (i = 0; i < 128; ++i)
{
NSString* str = keyCodeToString((CGKeyCode)i);
if(str != nil && ![str isEqualToString:@""])
{
[dict setObject:[NSNumber numberWithInt:i] forKey:str];
}
}
}
NSString * keyChar = [NSString stringWithFormat:@"%c" , c];
return [dict objectForKey:keyChar];
}
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