PrivateBoxiOS/创维盒子/code/Helpers/NSObject+Extensions.m

//
//  NSObject+Extensions.m
//  Private-X
//
//  Created by xd h on 2024/5/26.
//

#import "NSObject+Extensions.h"

@implementation NSObject (Extensions)

@end

@implementation UIImage (Extentions)

- (UIImage *)getSubImage:(CGRect)rect{
    if (rect.origin.x+rect.size.width > self.size.width || rect.origin.y+rect.size.height > self.size.height) {
        return self;
    }
    CGImageRef subImageRef = CGImageCreateWithImageInRect(self.CGImage, rect);
    CGRect smallBounds = CGRectMake(0, 0, CGImageGetWidth(subImageRef), CGImageGetHeight(subImageRef));
    UIGraphicsBeginImageContext(smallBounds.size);
    CGContextRef context = UIGraphicsGetCurrentContext();
    CGContextDrawImage(context, smallBounds, subImageRef);
    UIImage *smallImage = [UIImage imageWithCGImage:subImageRef];
    UIGraphicsEndImageContext();
    return smallImage;
}

- (UIImage *)imageByResizeToSize:(CGSize)size {
    if (size.width <= 0 || size.height <= 0){
        return nil;
    }
    UIGraphicsBeginImageContextWithOptions(size, NO, self.scale);
    [self drawInRect:CGRectMake(0, 0, size.width, size.height)];
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return image;
}

@end