Some gesture stuff

LWViewController.m

#import "LWViewController.h"

@interface LWViewController ()

@property (nonatomic, retain) UIView *outerSubview;
@property (nonatomic, retain) UIView *innerSubview;

@end

@implementation LWViewController

@synthesize outerSubview = _outerSubview;
@synthesize innerSubview = _innerSubview;

- (void)dealloc {
	[_outerSubview release];
	[_innerSubview release];
	[super dealloc];
}

- (void)viewDidUnload {
	[_outerSubview release];
	[_innerSubview release];
	[super viewDidUnload];
}

- (void)loadView {
	CGRect frame = [UIScreen mainScreen].bounds;
	self.view = [[[UIView alloc] initWithFrame:frame] autorelease];
	
	self.outerSubview = [[[UIView alloc] initWithFrame:frame] autorelease];
	self.outerSubview.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
	self.outerSubview.backgroundColor = [UIColor grayColor];
	[self.view addSubview:self.outerSubview];
	
	CGRect subViewFrame = CGRectInset(frame, 75.0f, 75.0f);
	self.innerSubview = [[[UIView alloc] initWithFrame:subViewFrame] autorelease];
	self.innerSubview.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
	self.innerSubview.backgroundColor = [UIColor blueColor];
	[self.view addSubview:self.innerSubview];
	
	UIPanGestureRecognizer *panGesture = [[[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(_panOuter:)] autorelease];
	[self.outerSubview addGestureRecognizer:panGesture];
	
	panGesture = [[[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(_panInner:)] autorelease];
	[self.innerSubview addGestureRecognizer:panGesture];
}

// Handlers for the gestures. So when "inside" the self.innerSubview from either gesture start handling the 
// gesture with respect to the self.innerSubview
- (void)_panOuter:(UIPanGestureRecognizer *)gesture {
	CGPoint p = [gesture locationInView:self.innerSubview];
	NSString *insideOutside = ([self.innerSubview pointInside:p withEvent:nil]) ? @"inside" : @"outside";
	NSLog(@"panOuter (%@): %@", insideOutside, NSStringFromCGPoint(p));
}

- (void)_panInner:(UIPanGestureRecognizer *)gesture {
	CGPoint p = [gesture locationInView:self.innerSubview];
	NSString *insideOutside = ([self.innerSubview pointInside:p withEvent:nil]) ? @"inside" : @"outside";
	NSLog(@"panInner (%@): %@", insideOutside, NSStringFromCGPoint(p));
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
	return YES;
}

@end