gistfile1.txt

- (UIImage *)createCroppedImageFromImage:(UIImage *)image {

    float scale = 1.0f/self.scrollView.zoomScale;

    CGRect visibleRect;
    visibleRect.origin.x = self.scrollView.contentOffset.x * scale;
    visibleRect.origin.y = self.scrollView.contentOffset.y * scale;
    visibleRect.size.width = self.scrollView.bounds.size.width * scale;
    visibleRect.size.height = self.scrollView.bounds.size.height * scale;

    CGImageRef cr = CGImageCreateWithImageInRect([image CGImage], visibleRect);
    UIImage* cropped = [[UIImage alloc] initWithCGImage:cr];
    CGImageRelease(cr);
    return cropped;
}