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//
//  UIImageView+CNGrayImage.m
//  CNLiveScioLive
//
//  Created by CNLive on 2021/4/27.
//  Copyright © 2021 CNLive. All rights reserved.
//

#import "UIImageView+CNGrayImage.h"
#import <objc/runtime.h>
#import "UIImage+CNGray.m"

@implementation UIImageView (CNGrayImage)
+(void)load
{
    static dispatch_once_t onceToken;
        dispatch_once(&onceToken, ^{
            Method setImage = class_getInstanceMethod(self,@selector(setImage:));
            Method xmtSwizzledSetImage = class_getInstanceMethod(self,@selector(xmtSwizzledSetImage:));
            ///交换IMP
            method_exchangeImplementations(setImage, xmtSwizzledSetImage);
        });
}
- (void)xmtSwizzledSetImage:(UIImage *)image {
     
        /// 图片使用灰白处理
    BOOL gray = [[NSUserDefaults standardUserDefaults] boolForKey:ISGRAYMODE];
    if (gray&&[self isMemberOfClass:[UIImageView class]]) {
        image = [UIImage grayImage:image];
    }
    [self xmtSwizzledSetImage:image];
}
@end