KeyBroadcaster.m

   1 #import "KeyBroadcaster.h"
   2 #import <Carbon/Carbon.h>
   3
   4 @interface KeyBroadcaster (Private)
   5 - (void)_broadcastKeyCode:(short)keyCode andModifiers:(long)modifiers;
   6 @end
   7
   8 @implementation KeyBroadcaster
   9
  10 - (void)keyDown:(NSEvent *)event
  11 {
  12     short keyCode;
  13     long modifiers;
  14
  15     keyCode = [event keyCode];
  16     modifiers = [event modifierFlags];
  17
  18     modifiers = [KeyBroadcaster cocoaToCarbonModifiers:modifiers];
  19     [self _broadcastKeyCode:keyCode andModifiers:modifiers];
  20 }
  21
  22 - (BOOL)performKeyEquivalent:(NSEvent *)event
  23 {
  24     [self keyDown:event];
  25     return YES;
  26 }
  27
  28 - (void)_broadcastKeyCode:(short)keyCode andModifiers:(long)modifiers
  29 {
  30     NSNumber *keycodeNum = [NSNumber numberWithShort:keyCode];
  31     NSNumber *modifiersNum = [NSNumber numberWithLong:modifiers];
  32     NSDictionary *info = [NSDictionary dictionaryWithObjectsAndKeys:
  33                     keycodeNum, @"KeyCode", modifiersNum, @"Modifiers", nil, nil];
  34     [[NSNotificationCenter defaultCenter] postNotificationName:@"KeyBroadcasterEvent" object:self userInfo:info];
  35 }
  36
  37 + (long)cocoaToCarbonModifiers:(long)modifiers
  38 {
  39     long carbonModifiers = 0;
  40     int i;
  41     static long cocoaToCarbon[6][2] =
  42     {
  43         { NSCommandKeyMask, cmdKey },
  44         { NSAlternateKeyMask, optionKey },
  45         { NSControlKeyMask, controlKey },
  46         { NSShiftKeyMask, shiftKey },
  47     };
  48     for (i = 0; i < 6; i++)
  49     {
  50         if (modifiers & cocoaToCarbon[i][0])
  51         {
  52             carbonModifiers += cocoaToCarbon[i][1];
  53         }
  54     }
  55     return carbonModifiers;
  56 }
  57
  58 @end