Crop image in oval shape

Question

I am working on App in which i need to give an cropping option. Once i select the image from camera or gallery it should open on editing page where we have Oval image with zooming & moving option. Once we click on apply the captured image should cropped in oval shape.

Now following screen is from aviary sdk. But it has square cropping & in need the cropping in oval shape. I tried to customise it but not able to do so.

Can anyone suggest me the easiest or the best suitable way to implement this.

Thanks.

Answer 1

- (UIImage *)croppedPhoto {
    // For dealing with Retina displays as well as non-Retina, we need to check
    // the scale factor, if it is available. Note that we use the size of teh cropping Rect
    // passed in, and not the size of the view we are taking a screenshot of.
 CGRect croppingRect = CGRectMake(imgMaskImage.frame.origin.x,
imgMaskImage.frame.origin.y, imgMaskImage.frame.size.width,
imgMaskImage.frame.size.height);

    imgMaskImage.hidden=YES;

   if ([[UIScreen mainScreen] respondsToSelector:@selector(scale)]) {
    UIGraphicsBeginImageContextWithOptions(croppingRect.size, YES, [UIScreen mainScreen].scale);
    } else {
        UIGraphicsBeginImageContext(croppingRect.size);
    }

    // Create a graphics context and translate it the view we want to crop so
    // that even in grabbing (0,0), that origin point now represents the actual
    // cropping origin desired:
    CGContextRef ctx = UIGraphicsGetCurrentContext();
    CGContextTranslateCTM(ctx, -croppingRect.origin.x, -croppingRect.origin.y);
    [self.view.layer renderInContext:ctx];

    // Retrieve a UIImage from the current image context:
    UIImage *snapshotImage = UIGraphicsGetImageFromCurrentImageContext();
   UIGraphicsEndImageContext();

   // Return the image in a UIImageView:
    return snapshotImage;
}

Answer 2

This type of masking you can perform or else you use the coco controls

.h file:-

@interface yourClass : UIImageView

@end

.m file:-

    #import <QuartzCore/QuartzCore.h>

    @implementation yourClass

    - (void)awakeFromNib
    {
        [super awakeFromNib];
        CALayer *mask = [CALayer layer];
        mask.contents = (id)[[UIImage imageNamed:@"ovalMask.png"] CGImage];
        CGSize size = self.frame.size;
        mask.frame = CGRectMake(0, 0, size.width, size.height);
        self.layer.mask = mask;
        [self.layer setMasksToBounds:YES];
    }

@end