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655 lines
18 KiB
Mathematica
655 lines
18 KiB
Mathematica
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/*
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* Copyright (c) 2007 Dave Dribin
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#import "DDHidLib.h"
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#include <IOKit/hid/IOHIDUsageTables.h>
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@interface DDHidJoystick (DDHidJoystickDelegate)
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- (void) ddhidJoystick: (DDHidJoystick *) joystick
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stick: (unsigned) stick
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xChanged: (int) value;
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- (void) ddhidJoystick: (DDHidJoystick *) joystick
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stick: (unsigned) stick
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yChanged: (int) value;
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- (void) ddhidJoystick: (DDHidJoystick *) joystick
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stick: (unsigned) stick
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otherAxis: (unsigned) otherAxis
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valueChanged: (int) value;
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- (void) ddhidJoystick: (DDHidJoystick *) joystick
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stick: (unsigned) stick
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povNumber: (unsigned) povNumber
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valueChanged: (int) value;
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- (void) ddhidJoystick: (DDHidJoystick *) joystick
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buttonDown: (unsigned) buttonNumber;
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- (void) ddhidJoystick: (DDHidJoystick *) joystick
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buttonUp: (unsigned) buttonNumber;
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@end
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@interface DDHidJoystick (Private)
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- (void) initLogicalDeviceElements;
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- (void) initJoystickElements: (NSArray *) elements;
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- (void) addStick: (NSArray *) stickElements;
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- (void) ddhidQueueHasEvents: (DDHidQueue *) hidQueue;
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- (int) normalizeValue: (int) value
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forElement: (DDHidElement *) element;
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- (int) povValue: (int) value
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forElement: (DDHidElement *) element;
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- (BOOL) findStick: (unsigned *) stick
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element: (DDHidElement **) elementOut
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withXAxisCookie: (IOHIDElementCookie) cookie;
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- (BOOL) findStick: (unsigned *) stick
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element: (DDHidElement **) elementOut
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withYAxisCookie: (IOHIDElementCookie) cookie;
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- (BOOL) findStick: (unsigned *) stickOut
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otherAxis: (unsigned *) axisOut
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element: (DDHidElement **) elementOut
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withCookie: (IOHIDElementCookie) cookie;
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- (BOOL) findStick: (unsigned *) stickOut
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povNumber: (unsigned *) povNumber
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element: (DDHidElement **) elementOut
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withCookie: (IOHIDElementCookie) cookie;
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@end
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@implementation DDHidJoystick
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+ (NSArray *) allJoysticks;
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{
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NSArray * joysticks =
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[DDHidDevice allDevicesMatchingUsagePage: kHIDPage_GenericDesktop
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usageId: kHIDUsage_GD_Joystick
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withClass: self
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skipZeroLocations: YES];
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NSArray * gamepads =
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[DDHidDevice allDevicesMatchingUsagePage: kHIDPage_GenericDesktop
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usageId: kHIDUsage_GD_GamePad
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withClass: self
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skipZeroLocations: YES];
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NSMutableArray * allJoysticks = [NSMutableArray arrayWithArray: joysticks];
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[allJoysticks addObjectsFromArray: gamepads];
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[allJoysticks sortUsingSelector: @selector(compareByLocationId:)];
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return allJoysticks;
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}
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- (id) initLogicalWithDevice: (io_object_t) device
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logicalDeviceNumber: (int) logicalDeviceNumber
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error: (NSError **) error;
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{
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self = [super initLogicalWithDevice: device
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logicalDeviceNumber: logicalDeviceNumber
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error: error];
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if (self == nil)
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return nil;
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mButtonElements = [[NSMutableArray alloc] init];
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mSticks = [[NSMutableArray alloc] init];
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mLogicalDeviceElements = [[NSMutableArray alloc] init];
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[self initLogicalDeviceElements];
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int logicalDeviceCount = [mLogicalDeviceElements count];
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if (logicalDeviceCount == 0)
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{
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[self release];
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return nil;
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}
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mLogicalDeviceNumber = logicalDeviceNumber;
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if (mLogicalDeviceNumber >= logicalDeviceCount)
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mLogicalDeviceNumber = logicalDeviceCount - 1;
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[self initJoystickElements:
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[mLogicalDeviceElements objectAtIndex: mLogicalDeviceNumber]];
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[mButtonElements sortUsingSelector: @selector(compareByUsage:)];
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mDelegate = nil;
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return self;
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}
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//===========================================================
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// dealloc
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//===========================================================
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- (void) dealloc
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{
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[mLogicalDeviceElements release];
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[mSticks release];
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[mButtonElements release];
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mLogicalDeviceElements = nil;
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mSticks = nil;
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mButtonElements = nil;
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[super dealloc];
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}
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- (int) logicalDeviceCount;
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{
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return [mLogicalDeviceElements count];
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}
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#pragma mark -
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#pragma mark Joystick Elements
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//===========================================================
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// - buttonElements
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//===========================================================
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- (NSArray *) buttonElements;
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{
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return mButtonElements;
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}
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- (unsigned) numberOfButtons;
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{
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return [mButtonElements count];
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}
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#pragma mark -
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#pragma mark Sticks - indexed accessors
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- (unsigned int) countOfSticks
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{
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return [mSticks count];
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}
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- (DDHidJoystickStick *) objectInSticksAtIndex: (unsigned int)index
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{
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return [mSticks objectAtIndex: index];
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}
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- (void) addElementsToQueue: (DDHidQueue *) queue;
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{
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NSEnumerator * e = [mSticks objectEnumerator];
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DDHidJoystickStick * stick;
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while (stick = [e nextObject])
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{
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[queue addElements: [stick allElements]];
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}
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[queue addElements: mButtonElements];
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}
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#pragma mark -
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#pragma mark Asynchronous Notification
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- (void) setDelegate: (id) delegate;
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{
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mDelegate = delegate;
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}
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- (void) addElementsToDefaultQueue;
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{
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[self addElementsToQueue: mDefaultQueue];
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}
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@end
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@implementation DDHidJoystick (Private)
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- (void) initLogicalDeviceElements;
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{
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NSArray * topLevelElements = [self elements];
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if ([topLevelElements count] == 0)
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{
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[mLogicalDeviceElements addObject: topLevelElements];
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return;
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}
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NSEnumerator * e = [topLevelElements objectEnumerator];
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DDHidElement * element;
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while (element = [e nextObject])
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{
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unsigned usagePage = [[element usage] usagePage];
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unsigned usageId = [[element usage] usageId];
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if (usagePage == kHIDPage_GenericDesktop &&
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(usageId == kHIDUsage_GD_Joystick || usageId == kHIDUsage_GD_GamePad))
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{
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[mLogicalDeviceElements addObject: [NSArray arrayWithObject: element]];
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}
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}
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}
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- (void) initJoystickElements: (NSArray *) elements;
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{
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NSEnumerator * e = [elements objectEnumerator];
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DDHidElement * element;
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DDHidJoystickStick * currentStick = [[[DDHidJoystickStick alloc] init] autorelease];
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BOOL stickHasElements = NO;
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while (element = [e nextObject])
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{
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unsigned usagePage = [[element usage] usagePage];
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unsigned usageId = [[element usage] usageId];
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NSArray * subElements = [element elements];
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if ([subElements count] > 0)
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{
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[self initJoystickElements: subElements];
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}
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else if ((usagePage == kHIDPage_GenericDesktop) &&
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(usageId == kHIDUsage_GD_Pointer))
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{
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[self addStick: subElements];
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}
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else if ([currentStick addElement: element])
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{
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stickHasElements = YES;
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}
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else if ((usagePage == kHIDPage_Button) &&
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(usageId > 0))
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{
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[mButtonElements addObject: element];
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}
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}
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if (stickHasElements)
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{
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[mSticks addObject: currentStick];
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}
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}
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- (void) addStick: (NSArray *) elements;
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{
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NSEnumerator * e = [elements objectEnumerator];
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DDHidElement * element;
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while (element = [e nextObject])
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{
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NSLog(@"Stick element: %@", [[element usage] usageName]);
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}
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}
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- (void) ddhidQueueHasEvents: (DDHidQueue *) hidQueue;
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{
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DDHidEvent * event;
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while ((event = [hidQueue nextEvent]))
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{
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IOHIDElementCookie cookie = [event elementCookie];
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SInt32 value = [event value];
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DDHidElement * element;
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unsigned stick;
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unsigned otherAxis;
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unsigned povNumber;
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if ([self findStick: &stick element: &element withXAxisCookie: cookie])
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{
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int normalizedValue = [self normalizeValue: value forElement: element];
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[self ddhidJoystick: self stick: stick xChanged: normalizedValue];
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}
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else if ([self findStick: &stick element: &element withYAxisCookie: cookie])
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{
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int normalizedValue = [self normalizeValue: value forElement: element];
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[self ddhidJoystick: self stick: stick yChanged: normalizedValue];
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}
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else if ([self findStick: &stick otherAxis: &otherAxis element: &element
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withCookie: cookie])
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{
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int normalizedValue = [self normalizeValue: value forElement: element];
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[self ddhidJoystick: self stick: stick
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otherAxis: otherAxis valueChanged: normalizedValue];
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}
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else if ([self findStick: &stick povNumber: &povNumber element: &element
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withCookie: cookie])
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{
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int povValue = [self povValue: value forElement: element];
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[self ddhidJoystick: self stick: stick
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povNumber: povNumber valueChanged: povValue];
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}
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else
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{
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unsigned i = 0;
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for (i = 0; i < [[self buttonElements] count]; i++)
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{
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if (cookie == [[[self buttonElements] objectAtIndex: i] cookie])
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break;
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}
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if (value == 1)
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{
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[self ddhidJoystick: self buttonDown: i];
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}
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else if (value == 0)
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{
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[self ddhidJoystick: self buttonUp: i];
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}
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else
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{
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DDHidElement * element = [self elementForCookie: [event elementCookie]];
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NSLog(@"Element: %@, value: %d", [[element usage] usageName], (int)[event value]);
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}
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}
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}
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}
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- (int) normalizeValue: (int) value
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forElement: (DDHidElement *) element;
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{
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int normalizedUnits = DDHID_JOYSTICK_VALUE_MAX - DDHID_JOYSTICK_VALUE_MIN;
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int elementUnits = [element maxValue] - [element minValue];
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int normalizedValue = (((int64_t)(value - [element minValue]) * normalizedUnits) /
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elementUnits) + DDHID_JOYSTICK_VALUE_MIN;
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return normalizedValue;
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}
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- (int) povValue: (int) value
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forElement: (DDHidElement *) element;
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{
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long max = [element maxValue];
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long min = [element minValue];
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// If the value is outside the min/max range, it's probably in a
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// centered/NULL state.
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if ((value < min) || (value > max))
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{
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return -1;
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}
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// Do like DirectInput and express the hatswitch value in hundredths of a
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// degree, clockwise from north.
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return 36000 / (max - min + 1) * (value - min);
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}
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- (BOOL) findStick: (unsigned *) stick
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element: (DDHidElement **) elementOut
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withXAxisCookie: (IOHIDElementCookie) cookie;
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{
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unsigned i;
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for (i = 0; i < [mSticks count]; i++)
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{
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DDHidElement * element = [[mSticks objectAtIndex: i] xAxisElement];
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if ((element != nil) && ([element cookie] == cookie))
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{
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*stick = i;
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*elementOut = element;
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return YES;
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}
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}
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return NO;
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}
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- (BOOL) findStick: (unsigned *) stick
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element: (DDHidElement **) elementOut
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withYAxisCookie: (IOHIDElementCookie) cookie;
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{
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unsigned i;
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for (i = 0; i < [mSticks count]; i++)
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{
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DDHidElement * element = [[mSticks objectAtIndex: i] yAxisElement];
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if ((element != nil) && ([element cookie] == cookie))
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{
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*stick = i;
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*elementOut = element;
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return YES;
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}
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}
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return NO;
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}
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- (BOOL) findStick: (unsigned *) stickOut
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otherAxis: (unsigned *) axisOut
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element: (DDHidElement **) elementOut
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withCookie: (IOHIDElementCookie) cookie;
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{
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unsigned i;
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for (i = 0; i < [mSticks count]; i++)
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{
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DDHidJoystickStick * stick = [mSticks objectAtIndex: i];
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unsigned j;
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for (j = 0; j < [stick countOfStickElements]; j++)
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{
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DDHidElement * element = [stick objectInStickElementsAtIndex: j];
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if ((element != nil) && ([element cookie] == cookie))
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{
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*stickOut = i;
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*axisOut = j;
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*elementOut = element;
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return YES;
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}
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}
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}
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return NO;
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}
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- (BOOL) findStick: (unsigned *) stickOut
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povNumber: (unsigned *) povNumber
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element: (DDHidElement **) elementOut
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withCookie: (IOHIDElementCookie) cookie;
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{
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unsigned i;
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for (i = 0; i < [mSticks count]; i++)
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{
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DDHidJoystickStick * stick = [mSticks objectAtIndex: i];
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unsigned j;
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for (j = 0; j < [stick countOfPovElements]; j++)
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{
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DDHidElement * element = [stick objectInPovElementsAtIndex: j];
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||
|
if ((element != nil) && ([element cookie] == cookie))
|
||
|
{
|
||
|
*stickOut = i;
|
||
|
*povNumber = j;
|
||
|
*elementOut = element;
|
||
|
return YES;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
return NO;
|
||
|
}
|
||
|
|
||
|
@end
|
||
|
|
||
|
@implementation DDHidJoystick (DDHidJoystickDelegate)
|
||
|
|
||
|
- (void) ddhidJoystick: (DDHidJoystick *) joystick
|
||
|
stick: (unsigned) stick
|
||
|
xChanged: (int) value;
|
||
|
{
|
||
|
if ([mDelegate respondsToSelector: _cmd])
|
||
|
[mDelegate ddhidJoystick: joystick stick: stick xChanged: value];
|
||
|
}
|
||
|
|
||
|
- (void) ddhidJoystick: (DDHidJoystick *) joystick
|
||
|
stick: (unsigned) stick
|
||
|
yChanged: (int) value;
|
||
|
{
|
||
|
if ([mDelegate respondsToSelector: _cmd])
|
||
|
[mDelegate ddhidJoystick: joystick stick: stick yChanged: value];
|
||
|
}
|
||
|
|
||
|
- (void) ddhidJoystick: (DDHidJoystick *) joystick
|
||
|
stick: (unsigned) stick
|
||
|
otherAxis: (unsigned) otherAxis
|
||
|
valueChanged: (int) value;
|
||
|
{
|
||
|
if ([mDelegate respondsToSelector: _cmd])
|
||
|
[mDelegate ddhidJoystick: joystick stick: stick otherAxis: otherAxis
|
||
|
valueChanged: value];
|
||
|
}
|
||
|
|
||
|
- (void) ddhidJoystick: (DDHidJoystick *) joystick
|
||
|
stick: (unsigned) stick
|
||
|
povNumber: (unsigned) povNumber
|
||
|
valueChanged: (int) value;
|
||
|
{
|
||
|
if ([mDelegate respondsToSelector: _cmd])
|
||
|
[mDelegate ddhidJoystick: joystick stick: stick povNumber: povNumber
|
||
|
valueChanged: value];
|
||
|
}
|
||
|
|
||
|
- (void) ddhidJoystick: (DDHidJoystick *) joystick
|
||
|
buttonDown: (unsigned) buttonNumber;
|
||
|
{
|
||
|
if ([mDelegate respondsToSelector: _cmd])
|
||
|
[mDelegate ddhidJoystick: joystick buttonDown: buttonNumber];
|
||
|
}
|
||
|
|
||
|
- (void) ddhidJoystick: (DDHidJoystick *) joystick
|
||
|
buttonUp: (unsigned) buttonNumber;
|
||
|
{
|
||
|
if ([mDelegate respondsToSelector: _cmd])
|
||
|
[mDelegate ddhidJoystick: joystick buttonUp: buttonNumber];
|
||
|
}
|
||
|
|
||
|
@end
|
||
|
|
||
|
@implementation DDHidJoystickStick
|
||
|
|
||
|
- (id) init
|
||
|
{
|
||
|
self = [super init];
|
||
|
if (self == nil)
|
||
|
return nil;
|
||
|
|
||
|
mXAxisElement = nil;
|
||
|
mYAxisElement = nil;
|
||
|
mStickElements = [[NSMutableArray alloc] init];
|
||
|
mPovElements = [[NSMutableArray alloc] init];
|
||
|
|
||
|
return self;
|
||
|
}
|
||
|
|
||
|
//===========================================================
|
||
|
// dealloc
|
||
|
//===========================================================
|
||
|
- (void) dealloc
|
||
|
{
|
||
|
[mXAxisElement release];
|
||
|
[mYAxisElement release];
|
||
|
[mStickElements release];
|
||
|
[mPovElements release];
|
||
|
|
||
|
mXAxisElement = nil;
|
||
|
mYAxisElement = nil;
|
||
|
mStickElements = nil;
|
||
|
mPovElements = nil;
|
||
|
[super dealloc];
|
||
|
}
|
||
|
|
||
|
- (BOOL) addElement: (DDHidElement *) element;
|
||
|
{
|
||
|
DDHidUsage * usage = [element usage];
|
||
|
if ([usage usagePage] != kHIDPage_GenericDesktop)
|
||
|
return NO;
|
||
|
|
||
|
BOOL elementAdded = YES;
|
||
|
switch ([usage usageId])
|
||
|
{
|
||
|
case kHIDUsage_GD_X:
|
||
|
if (mXAxisElement == nil)
|
||
|
mXAxisElement = [element retain];
|
||
|
else
|
||
|
[mStickElements addObject: element];
|
||
|
break;
|
||
|
|
||
|
case kHIDUsage_GD_Y:
|
||
|
if (mYAxisElement == nil)
|
||
|
mYAxisElement = [element retain];
|
||
|
else
|
||
|
[mStickElements addObject: element];
|
||
|
break;
|
||
|
|
||
|
case kHIDUsage_GD_Z:
|
||
|
case kHIDUsage_GD_Rx:
|
||
|
case kHIDUsage_GD_Ry:
|
||
|
case kHIDUsage_GD_Rz:
|
||
|
[mStickElements addObject: element];
|
||
|
break;
|
||
|
|
||
|
case kHIDUsage_GD_Hatswitch:
|
||
|
[mPovElements addObject: element];
|
||
|
break;
|
||
|
|
||
|
default:
|
||
|
elementAdded = NO;
|
||
|
|
||
|
}
|
||
|
|
||
|
return elementAdded;
|
||
|
}
|
||
|
|
||
|
- (NSArray *) allElements;
|
||
|
{
|
||
|
NSMutableArray * elements = [NSMutableArray array];
|
||
|
if (mXAxisElement != nil)
|
||
|
[elements addObject: mXAxisElement];
|
||
|
if (mYAxisElement != nil)
|
||
|
[elements addObject: mYAxisElement];
|
||
|
[elements addObjectsFromArray: mStickElements];
|
||
|
[elements addObjectsFromArray: mPovElements];
|
||
|
return elements;
|
||
|
}
|
||
|
|
||
|
- (DDHidElement *) xAxisElement;
|
||
|
{
|
||
|
return mXAxisElement;
|
||
|
}
|
||
|
|
||
|
- (DDHidElement *) yAxisElement;
|
||
|
{
|
||
|
return mYAxisElement;
|
||
|
}
|
||
|
|
||
|
#pragma mark -
|
||
|
#pragma mark mStickElements - indexed accessors
|
||
|
|
||
|
- (unsigned int) countOfStickElements
|
||
|
{
|
||
|
return [mStickElements count];
|
||
|
}
|
||
|
|
||
|
- (DDHidElement *) objectInStickElementsAtIndex: (unsigned int)index
|
||
|
{
|
||
|
return [mStickElements objectAtIndex: index];
|
||
|
}
|
||
|
|
||
|
#pragma mark -
|
||
|
#pragma mark PovElements - indexed accessors
|
||
|
|
||
|
- (unsigned int) countOfPovElements;
|
||
|
{
|
||
|
return [mPovElements count];
|
||
|
}
|
||
|
|
||
|
- (DDHidElement *) objectInPovElementsAtIndex: (unsigned int)index;
|
||
|
{
|
||
|
return [mPovElements objectAtIndex: index];
|
||
|
}
|
||
|
|
||
|
- (NSString *) description;
|
||
|
{
|
||
|
return [mStickElements description];
|
||
|
}
|
||
|
|
||
|
@end
|