Forked Enjoy, mouse movement

[enjoyable.git] / Joystick.m

diff --git a/Joystick.m b/Joystick.m
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+++ b/Joystick.m
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+//
+//  Joystick.m
+//  Enjoy
+//
+//  Created by Sam McCall on 4/05/09.
+//
+
+@implementation Joystick
+
+
+@synthesize    vendorId, productId, productName, name, index, device, children;
+
+-(id)initWithDevice: (IOHIDDeviceRef) newDevice {
+       if(self=[super init]) {
+               children = [[NSMutableArray alloc]init];
+               
+               device = newDevice;
+               productName = (NSString*)IOHIDDeviceGetProperty( device, CFSTR(kIOHIDProductKey) );
+               vendorId = [(NSNumber*)IOHIDDeviceGetProperty(device, CFSTR(kIOHIDVendorIDKey)) intValue];
+               productId = [(NSNumber*)IOHIDDeviceGetProperty(device, CFSTR(kIOHIDVendorIDKey)) intValue];
+               
+               name = productName;
+       }
+       return self;
+}
+
+-(void) setIndex: (int) newIndex {
+       index = newIndex;
+       name = [[NSString alloc] initWithFormat: @"%@ #%d", productName, (index+1)];
+}
+-(int) index {
+       return index;
+}
+
+-(void) invalidate {
+       IOHIDDeviceClose(device, kIOHIDOptionsTypeNone);
+       NSLog(@"Removed a device: %@", [self name]);
+}
+
+-(id) base {
+       return NULL;
+}
+
+-(void) populateActions {
+       NSArray* elements = (NSArray*)IOHIDDeviceCopyMatchingElements(device, NULL, kIOHIDOptionsTypeNone);
+       
+       int buttons = 0;
+       int axes = 0;
+       
+       for(int i=0; i<[elements count]; i++) {
+               IOHIDElementRef element = (IOHIDElementRef)[elements objectAtIndex: i];
+               int type = IOHIDElementGetType(element);
+               int usage = IOHIDElementGetUsage(element);
+               int usagePage = IOHIDElementGetUsagePage(element);
+               int max = IOHIDElementGetPhysicalMax(element);
+               int min = IOHIDElementGetPhysicalMin(element);
+        CFStringRef elName = IOHIDElementGetName(element);
+               
+//             if(usagePage != 1 || usagePage == 9) {
+//                     NSLog(@"Skipping usage page %x usage %x", usagePage, usage);
+//                     continue;
+//             }
+               
+               JSAction* action = NULL;
+               
+               if(!(type == kIOHIDElementTypeInput_Misc || type == kIOHIDElementTypeInput_Axis ||
+                        type == kIOHIDElementTypeInput_Button)) {
+
+                       continue;
+               }
+               
+               if((max - min == 1) || usagePage == kHIDPage_Button || type == kIOHIDElementTypeInput_Button) {
+                       action = [[JSActionButton alloc] initWithIndex: buttons++ andName: (NSString *)elName];
+                       [(JSActionButton*)action setMax: max];
+               } else if(usage == 0x39)
+                       action = [[JSActionHat alloc] init];
+               else {
+                       if(usage >= 0x30 && usage < 0x36) {
+                               action = [[JSActionAnalog alloc] initWithIndex: axes++];
+                               [(JSActionAnalog*)action setOffset: (double)-1.0];
+                               [(JSActionAnalog*)action setScale: (double)2.0/(max - min)];
+                       } else 
+                               continue;
+               }
+
+               [action setBase: self];
+               [action setUsage: usage];
+               [action setCookie: IOHIDElementGetCookie(element)];
+               [children addObject:action];
+       }
+}
+
+-(NSString*) stringify {
+       return [[NSString alloc] initWithFormat: @"%d~%d~%d", vendorId, productId, index];
+}
+
+- (JSAction*) findActionByCookie: (void*) cookie {
+       for(int i=0; i<[children count]; i++)
+               if([[children objectAtIndex:i]cookie] == cookie)
+                       return (JSAction*)[children objectAtIndex:i];
+       return NULL;
+}
+
+-(id) handlerForEvent: (IOHIDValueRef) value {
+       JSAction* mainAction = [self actionForEvent: value];
+       if(!mainAction)
+               return NULL;
+       return [mainAction findSubActionForValue: value];
+}
+-(JSAction*) actionForEvent: (IOHIDValueRef) value {
+       IOHIDElementRef elt = IOHIDValueGetElement(value);
+       void* cookie = IOHIDElementGetCookie(elt);
+       return [self findActionByCookie: cookie];
+}
+
+@end