kmpdfkit_demo/PDFViewer/Source/PDFBackground/PDFBackgroundPreview.m

//
//  CPDFBackgroundPreview.m
//  PDFViewer
//
//  Created by kdanmobile_2 on 2023/1/2.
//

#import "PDFBackgroundPreview.h"
#import "Masonry.h"

@implementation PDFBackgroundPreview

- (instancetype)initWithFrame:(CGRect)frame {
    self = [super initWithFrame:frame];
    
    if (self) {
        
        [self addSubview:self.preImageView];
        
        self.backgroundColor = [UIColor grayColor];
    }
    
    return self;
}

- (void)drawRect:(CGRect)rect {
    [super drawRect:rect];
    
    self.preImageView.layer.borderColor = UIColor.blueColor.CGColor;
    self.preImageView.layer.borderWidth = 1;
    [self.preImageView sizeToFit];
    self.preImageView.contentMode = UIViewContentModeScaleAspectFit;
    
    CGRect frame = self.preImageView.frame;
    frame.origin = CGPointMake(self.documentImageView.bounds.size.width / 2 - self.preImageView.frame.size.width / 2, self.documentImageView.bounds.size.height / 2 - self.preImageView.frame.size.height / 2);
    
    self.preImageView.frame = frame;
}

@end