JSActionHat.m

   1 //
   2 //  JSActionHat.m
   3 //  Enjoy
   4 //
   5 //  Created by Sam McCall on 5/05/09.
   6 //
   7
   8 static BOOL active_eightway[36] = {
   9 NO,  NO,  NO,  NO , // center
  10 YES, NO,  NO,  NO , // N
  11 YES, NO,  NO,  YES, // NE
  12 NO,  NO,  NO,  YES, // E
  13 NO,  YES, NO,  YES, // SE
  14 NO,  YES, NO,  NO , // S
  15 NO,  YES, YES, NO , // SW
  16 NO,  NO,  YES, NO , // W
  17 YES, NO,  YES, NO , // NW
  18 };
  19 static BOOL active_fourway[20] = {
  20 NO,  NO,  NO,  NO , // center
  21 YES, NO,  NO,  NO , // N
  22 NO,  NO,  NO,  YES, // E
  23 NO,  YES, NO,  NO , // S
  24 NO,  NO,  YES, NO , // W
  25 };
  26
  27 @implementation JSActionHat
  28
  29 - (id) init {
  30         if(self = [super init]) {
  31                 subActions = [NSArray arrayWithObjects:
  32                                           [[SubAction alloc] initWithIndex: 0 name: @"Up" base: self],
  33                                           [[SubAction alloc] initWithIndex: 1 name: @"Down" base: self],
  34                                           [[SubAction alloc] initWithIndex: 2 name: @"Left" base: self],
  35                                           [[SubAction alloc] initWithIndex: 3 name: @"Right" base: self],
  36                                           nil
  37                                           ];
  38                 [subActions retain];
  39                 name = @"Hat switch";
  40         }
  41         return self;
  42 }
  43
  44 -(id) findSubActionForValue: (IOHIDValueRef) value {
  45         int parsed = IOHIDValueGetIntegerValue(value);
  46         if(IOHIDElementGetLogicalMax(IOHIDValueGetElement(value)) == 7) {
  47                 // 8-way
  48                 switch(parsed) {
  49                         case 0: return [subActions objectAtIndex: 0];
  50                         case 4: return [subActions objectAtIndex: 1];
  51                         case 6: return [subActions objectAtIndex: 2];
  52                         case 2: return [subActions objectAtIndex: 3];
  53                 }
  54         } else  if(IOHIDElementGetLogicalMax(IOHIDValueGetElement(value)) == 8) {
  55                 // 8-way
  56                 switch(parsed) {
  57                         case 1: return [subActions objectAtIndex: 0];
  58                         case 5: return [subActions objectAtIndex: 1];
  59                         case 7: return [subActions objectAtIndex: 2];
  60                         case 3: return [subActions objectAtIndex: 3];
  61                 }
  62         } else if(IOHIDElementGetLogicalMax(IOHIDValueGetElement(value)) == 3) {
  63                         // 4-way
  64                 switch(parsed) {
  65                         case 0: return [subActions objectAtIndex: 0];
  66                         case 2: return [subActions objectAtIndex: 1];
  67                         case 3: return [subActions objectAtIndex: 2];
  68                         case 1: return [subActions objectAtIndex: 3];
  69                 }
  70         } else if(IOHIDElementGetLogicalMax(IOHIDValueGetElement(value)) == 4) {
  71                 // 4-way
  72                 switch(parsed) {
  73                         case 1: return [subActions objectAtIndex: 0];
  74                         case 3: return [subActions objectAtIndex: 1];
  75                         case 4: return [subActions objectAtIndex: 2];
  76                         case 2: return [subActions objectAtIndex: 3];
  77                 }
  78         }
  79         return NULL;
  80 }
  81
  82 -(void) notifyEvent: (IOHIDValueRef) value {
  83         int parsed = IOHIDValueGetIntegerValue(value);
  84         int size = IOHIDElementGetLogicalMax(IOHIDValueGetElement(value));
  85         if(size == 7 || size == 3) {
  86                 parsed++;
  87                 size++;
  88         }
  89         BOOL* activeSubactions = (size == 8) ? active_eightway : active_fourway;
  90         for(int i=0; i<4; i++)
  91                 [[subActions objectAtIndex: i] setActive: activeSubactions[parsed * 4 + i]];
  92 }
  93
  94 @end