apple2ix/Apple2Mac/DDHidLib/lib/DDHidMouse.m

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/*
* Copyright (c) 2007 Dave Dribin
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#import "DDHidMouse.h"
#import "DDHidUsage.h"
#import "DDHidElement.h"
#import "DDHidQueue.h"
#import "DDHidEvent.h"
#include <IOKit/hid/IOHIDUsageTables.h>
// Implement our own delegate methods
@interface DDHidMouse (DDHidMouseDelegate)
- (void) ddhidMouse: (DDHidMouse *) mouse xChanged: (SInt32) deltaX;
- (void) ddhidMouse: (DDHidMouse *) mouse yChanged: (SInt32) deltaY;
- (void) ddhidMouse: (DDHidMouse *) mouse wheelChanged: (SInt32) deltaWheel;
- (void) ddhidMouse: (DDHidMouse *) mouse buttonDown: (unsigned) buttonNumber;
- (void) ddhidMouse: (DDHidMouse *) mouse buttonUp: (unsigned) buttonNumber;
@end
@interface DDHidMouse (Private)
- (void) initMouseElements: (NSArray *) elements;
- (void) ddhidQueueHasEvents: (DDHidQueue *) hidQueue;
@end
@implementation DDHidMouse
+ (NSArray *) allMice;
{
return
[DDHidDevice allDevicesMatchingUsagePage: kHIDPage_GenericDesktop
usageId: kHIDUsage_GD_Mouse
withClass: self
skipZeroLocations: YES];
}
- (id) initWithDevice: (io_object_t) device error: (NSError **) error_;
{
self = [super initWithDevice: device error: error_];
if (self == nil)
return nil;
mXElement = mYElement = mWheelElement = nil;
mButtonElements = [[NSMutableArray alloc] init];
[self initMouseElements: [self elements]];
return self;
}
//===========================================================
// dealloc
//===========================================================
- (void) dealloc
{
[mXElement release];
[mYElement release];
[mWheelElement release];
[mButtonElements release];
mXElement = nil;
mYElement = nil;
mWheelElement = nil;
mButtonElements = nil;
[super dealloc];
}
#pragma mark -
#pragma mark Mouse Elements
//===========================================================
// - xElement
//===========================================================
- (DDHidElement *) xElement
{
return mXElement;
}
//===========================================================
// - yElement
//===========================================================
- (DDHidElement *) yElement
{
return mYElement;
}
- (DDHidElement *) wheelElement;
{
return mWheelElement;
}
//===========================================================
// - buttonElements
//===========================================================
- (NSArray *) buttonElements;
{
return mButtonElements;
}
- (unsigned) numberOfButtons;
{
return [mButtonElements count];
}
- (void) addElementsToQueue: (DDHidQueue *) queue;
{
[queue addElement: mXElement];
[queue addElement: mYElement];
[queue addElement: mWheelElement];
[queue addElements: mButtonElements];
}
#pragma mark -
#pragma mark Asynchronous Notification
- (void) setDelegate: (id) delegate;
{
mDelegate = delegate;
}
- (void) addElementsToDefaultQueue;
{
[self addElementsToQueue: mDefaultQueue];
}
@end
@implementation DDHidMouse (DDHidMouseDelegate)
- (void) ddhidMouse: (DDHidMouse *) mouse xChanged: (SInt32) deltaX;
{
if ([mDelegate respondsToSelector: _cmd])
[mDelegate ddhidMouse: mouse xChanged: deltaX];
}
- (void) ddhidMouse: (DDHidMouse *) mouse yChanged: (SInt32) deltaY;
{
if ([mDelegate respondsToSelector: _cmd])
[mDelegate ddhidMouse: mouse yChanged: deltaY];
}
- (void) ddhidMouse: (DDHidMouse *) mouse wheelChanged: (SInt32) deltaWheel;
{
if ([mDelegate respondsToSelector: _cmd])
[mDelegate ddhidMouse: mouse wheelChanged: deltaWheel];
}
- (void) ddhidMouse: (DDHidMouse *) mouse buttonDown: (unsigned) buttonNumber;
{
if ([mDelegate respondsToSelector: _cmd])
[mDelegate ddhidMouse: mouse buttonDown: buttonNumber];
}
- (void) ddhidMouse: (DDHidMouse *) mouse buttonUp: (unsigned) buttonNumber;
{
if ([mDelegate respondsToSelector: _cmd])
[mDelegate ddhidMouse: mouse buttonUp: buttonNumber];
}
@end
@implementation DDHidMouse (Private)
- (void) initMouseElements: (NSArray *) elements;
{
NSEnumerator * e = [elements objectEnumerator];
DDHidElement * element;
while (element = [e nextObject])
{
unsigned usagePage = [[element usage] usagePage];
unsigned usageId = [[element usage] usageId];
if ((usagePage == kHIDPage_GenericDesktop) &&
(usageId == kHIDUsage_GD_X))
{
mXElement = [element retain];
}
else if ((usagePage == kHIDPage_GenericDesktop) &&
(usageId == kHIDUsage_GD_Y))
{
mYElement = [element retain];
}
else if ((usagePage == kHIDPage_GenericDesktop) &&
(usageId == kHIDUsage_GD_Wheel))
{
mWheelElement = [element retain];
}
else if ((usagePage == kHIDPage_Button) &&
(usageId > 0))
{
[mButtonElements addObject: element];
}
NSArray * subElements = [element elements];
if (subElements != nil)
[self initMouseElements: subElements];
}
}
- (void) ddhidQueueHasEvents: (DDHidQueue *) hidQueue;
{
DDHidEvent * event;
while ((event = [hidQueue nextEvent]))
{
IOHIDElementCookie cookie = [event elementCookie];
SInt32 value = [event value];
if (cookie == [[self xElement] cookie])
{
if (value != 0)
{
[self ddhidMouse: self xChanged: value];
}
}
else if (cookie == [[self yElement] cookie])
{
if (value != 0)
{
[self ddhidMouse: self yChanged: value];
}
}
else if (cookie == [[self wheelElement] cookie])
{
if (value != 0)
{
[self ddhidMouse: self wheelChanged: value];
}
}
else
{
unsigned i = 0;
for (i = 0; i < [[self buttonElements] count]; i++)
{
if (cookie == [[[self buttonElements] objectAtIndex: i] cookie])
break;
}
if (value == 1)
{
[self ddhidMouse: self buttonDown: i];
}
else if (value == 0)
{
[self ddhidMouse: self buttonUp: i];
}
else
{
DDHidElement * element = [self elementForCookie: [event elementCookie]];
NSLog(@"Element: %@, value: %d", [[element usage] usageName], (int)[event value]);
}
}
}
}
@end