tederen_ios/smartRhino/Project/Other/Third/PhotoTailoringSource/UIImage+Crop.m

#import "UIImage+Crop.h"

@implementation UIImage (Crop)
+ (UIImage*)imageWithImageSimple:(UIImage*)image
                    scaledToSize:(CGSize)newSize
{
    UIGraphicsBeginImageContext(newSize);
    [image drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];
    UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return newImage;
}
- (UIImage *)cropImageWithX:(CGFloat)x
                          y:(CGFloat)y
                      width:(CGFloat)width
                     height:(CGFloat)height
{
    CGRect rect = CGRectMake(x, y, width, height);
    CGImageRef imageRef = CGImageCreateWithImageInRect(self.CGImage, rect);
    UIImage *image = [UIImage imageWithCGImage:imageRef];
    return image;
}
+ (UIImage *)fitScreenWithImage:(UIImage *)image
{
    CGSize newSize;
    BOOL min = image.size.height>image.size.width;
    if (min && image.size.width<SCREEN_WIDTH) {
        CGFloat scale = SCREEN_WIDTH/image.size.width;
        newSize = CGSizeMake(SCREEN_WIDTH, image.size.height*scale);
    }else if (min && image.size.width >= SCREEN_WIDTH){
        CGFloat scale = SCREEN_WIDTH/image.size.width;
        newSize = CGSizeMake(SCREEN_WIDTH, image.size.height*scale);
    }else{
        CGFloat scale = SCREEN_WIDTH/image.size.height;
        newSize = CGSizeMake(image.size.width * scale, SCREEN_WIDTH);
    }
     image = [self imageWithImageSimple:image scaledToSize:newSize];
    return image;
}
@end