5 // Created by Sam McCall on 5/05/09.
8 #import "JSActionHat.h"
10 static BOOL active_eightway[36] = {
11 NO, NO, NO, NO , // center
12 YES, NO, NO, NO , // N
13 YES, NO, NO, YES, // NE
15 NO, YES, NO, YES, // SE
16 NO, YES, NO, NO , // S
17 NO, YES, YES, NO , // SW
18 NO, NO, YES, NO , // W
19 YES, NO, YES, NO , // NW
22 static BOOL active_fourway[20] = {
23 NO, NO, NO, NO , // center
24 YES, NO, NO, NO , // N
26 NO, YES, NO, NO , // S
27 NO, NO, YES, NO , // W
30 @implementation JSActionHat
33 if ((self = [super init])) {
34 self.children = @[[[JSAction alloc] initWithName:@"Up" base: self],
35 [[JSAction alloc] initWithName:@"Down" base: self],
36 [[JSAction alloc] initWithName:@"Left" base: self],
37 [[JSAction alloc] initWithName:@"Right" base: self]];
38 // TODO(jfw): Should have an indexed name, like everything else.
39 self.name = @"Hat switch";
44 - (id)findSubActionForValue:(IOHIDValueRef)value {
45 int parsed = IOHIDValueGetIntegerValue(value);
46 switch (IOHIDElementGetLogicalMax(IOHIDValueGetElement(value))) {
47 case 7: // 8-way switch, 0-7.
49 case 0: return self.children[0];
50 case 4: return self.children[1];
51 case 6: return self.children[2];
52 case 2: return self.children[3];
55 case 8: // 8-way switch, 1-8 (neutral 0).
57 case 1: return self.children[0];
58 case 5: return self.children[1];
59 case 7: return self.children[2];
60 case 3: return self.children[3];
63 case 3: // 4-way switch, 0-3.
65 case 0: return self.children[0];
66 case 2: return self.children[1];
67 case 3: return self.children[2];
68 case 1: return self.children[3];
71 case 4: // 4-way switch, 1-4 (neutral 0).
73 case 1: return self.children[0];
74 case 3: return self.children[1];
75 case 4: return self.children[2];
76 case 2: return self.children[3];
84 - (void)notifyEvent:(IOHIDValueRef)value {
85 int parsed = IOHIDValueGetIntegerValue(value);
86 int size = IOHIDElementGetLogicalMax(IOHIDValueGetElement(value));
87 // Skip first row in table if 0 is not neutral.
92 BOOL *activechildren = (size == 8) ? active_eightway : active_fourway;
93 for (int i = 0; i < 4; i++)
94 [self.children[i] setActive:activechildren[parsed * 4 + i]];