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-(CGSize)collectionViewContentSize {
    return self.collectionView.bounds.size;
}

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CGImageRef imageRef = CGImageCreateWithImageInRect([rootViewController.gradientImage CGImage], CGRectMake(point.x, self.minY + self.superview.frame.origin.y, size.width, self.maxY - self.minY));
UIImage *img = [UIImage imageWithCGImage:imageRef];
CGImageRelease(imageRef);

UIGraphicsBeginImageContext(self.backgroundImage.frame.size);
[img drawAtPoint:CGPointZero blendMode:kCGBlendModeSoftLight alpha:1];
[aImage drawAtPoint:CGPointZero blendMode:kCGBlendModeSoftLight alpha:alpha];

UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

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#import <CoreImage/CoreImage.h>
 
@implementation UIImage (Blur)
 
+(UIImage *)darkenedAndBlurredImageForImage:(UIImage *)image {
    CGFloat scaleFactor = 1.0f;
 
    if (AppDelegate.device == TLAppDelegateDeviceIPhone3GS || AppDelegate.device == TLAppDelegateDeviceIPhone4) {
        scaleFactor = 0.25f;
    } else if (AppDelegate.device == TLAppDelegateDeviceIPhone4S) {

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RAC(self.textField.text) = [[[[RACSignal interval:1] startWith:[NSDate date]] map:^id(NSDate *value) {
   NSDateComponents *dateComponents = [[NSCalendar currentCalendar] components:(NSMinuteCalendarUnit|NSSecondCalendarUnit) fromDate:value];

   return [NSString stringWithFormat:@"%d:%02d", dateComponents.minute, dateComponents.second];
}] deliverOn:[RACScheduler mainThreadScheduler]];

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RAC(self.label.text) = RACAbleWithStart(self.someString);

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RAC(self.label.text) = RACAble(self.someString);

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[[self.gestureRecognizerIsRunningSubject filter:^BOOL(NSNumber *gestureRecognizerIsRunning) {
   return !(gestureRecognizerIsRunning.boolValue);
}] subscribeNext:^(id x) {
   [self.tableView flashScrollIndicators];
}];

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-(void)gestureRecognizerReceivedTouch:(UIPanGestureRecognizer *)recognizer {
   if (recognizer.state == UIGestureRecognizerStateBegan) {
       [self.gestureRecognizerIsRunningSubject sendNext:@(YES)];
   }

   else if (recognizer.state == UIGestureRecognizerStateChanged) {
       [self.gestureRecognizerValueSubject sendNext:[NSValue valueWithCGPoint:[recognizer locationInView:self.view]]];
   }

   else if (recognizer.state == UIGestureRecognizerStateEnded) {

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self.gestureRecognizerIsRunningSubject = [RACSubject subject];
self.gestureRecognizerValueSubject = [RACSubject subject];

RAC(self.someView.frame) = [self.gestureRecognizerValueSubject map:^id(NSValue *value) {
   CGPoint location = [value CGPointValue];

   CGFloat size = 100.0f;

   return [NSValue valueWithCGRect:CGRectMake(location.x - size/2.0f, location.y - size/2.0f, size, size)];
}];

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RAC(self.submitButton.enabled) = [RACSignal combineLatest:@[self.usernameField.rac_textSignal, self.passwordField.rac_textSignal] reduce:^id(NSString *userName, NSString *password) {
    return @(userName.length >= 6 && password.length >= 6);
}];