GitHub - szgit/PEPhotoCropEditor: Image cropping library for iOS.

PEPhotoCropEditor is image cropping library for iOS, similar to the Photos.app UI.

Features

Both iPhone/iPad available
Works fine any device orientations
Support pinch gesture to zoom
Support rotation gesture

System requirements

iOS 5.0 or higher

Installation

CocoaPods

pod 'PEPhotoCropEditor'

Usage

Use view controller component

 PECropViewController *controller = [[PECropViewController alloc] init];
 controller.delegate = self;
 controller.image = self.imageView.image;
 
 UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:controller];
 [self presentViewController:navigationController animated:YES completion:NULL];

Or use the crop view directly

self.cropView = [[PECropView alloc] initWithFrame:contentView.bounds];
[self.view addSubview:self.cropView];

Get the cropped image

delegate method

- (void)cropViewController:(PECropViewController *)controller didFinishCroppingImage:(UIImage *)croppedImage
{
    [controller dismissViewControllerAnimated:YES completion:NULL];
    self.imageView.image = croppedImage;
}

retrieve from view directly

UIImage *croppedImage = self.cropView.croppedImage;

Keep crop aspect ratio while resizing

controller.keepingCropAspectRatio = YES;

self.cropView.keepingCropAspectRatio = YES;

Specify crop rect by image size based

// e.g.) Cropping center square
CGFloat width = image.size.width;
CGFloat height = image.size.height;
CGFloat length = MIN(width, height);
controller.imageCropRect = CGRectMake((width - length) / 2,
                                      (height - length) / 2,
                                      length,
                                      length);

// e.g.) Cropping center square
CGFloat width = image.size.width;
CGFloat height = image.size.height;
CGFloat length = MIN(width, height);
self.cropView.imageCropRect = CGRectMake((width - length) / 2,
                                         (height - length) / 2,
                                         length,
                                         length);

Reset back crop rect to original image size and rotation

[controller resetCropRect];

[self.cropView resetCropRect];

License

PEPhotoCropEditor is available under the MIT license. See the LICENSE file for more info.