A view allowing user to specify a rectangle area in an image. The user can drag the corner to resize it, move the entire bounding box, or use 2 fingers like a pinch gesture to move and resize the bounding box. The color and size of the dots on the corner can be customized.

Demo Video

Very easy! It is created to be a drop-in component, so no static library, no extra dependencies. Just copy ImageCropView.h and ImageCropView.m to your project, and implement ImageCropViewControllerDelegate protocol.

Use it like UIImagePicker:

- (void)cropImage:(UIImage *)image{
	ImageCropViewController *controller = [[ImageCropViewController alloc] initWithImage:image];
	controller.delegate = self;
	[[self navigationController] pushViewController:controller animated:YES];
}

- (void)ImageCropViewController:(ImageCropViewController *)controller didFinishCroppingImage:(UIImage *)croppedImage{
   image = croppedImage;
   imageView.image = croppedImage;
   [[self navigationController] popViewControllerAnimated:YES];
}

- (void)ImageCropViewControllerDidCancel:(ImageCropViewController *)controller{
    imageView.image = image;
    [[self navigationController] popViewControllerAnimated:YES];
}

Using FXBlurView, you can now blur the parts of the image outside the crop area. This is not for blurring the final cropped image. Just set the blurredBackground property in the same place you set the delegate, like so:

controller.blurredBackground = YES;

To set the minimum height and width of a cropped image, simply change the IMAGE_MIN_HEIGHT and IMAGE_MIN_WIDTH variables at the top of ImageCropView.m.

The project comes with a working example (as target ImageCropView) to demostrate the usage.

Copyright (C) 2012 Ming Yang

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.