- (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;
}
Crop image in oval shape
-
20-06-2023 - |
문제
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.
해결책
다른 팁
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
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