kmpdfkit_demo/PDFViewer/View/CPDFBackgroundView.m

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

#define KBUTTON_WIDTH 28
#define KBUTTON_HEIGHT 28

#import "CPDFBackgroundView.h"
#import "Masonry.h"

@implementation CPDFBackgroundView

- (instancetype)initWithFrame:(CGRect)frame {
    self = [super initWithFrame:frame];
    
    if (self) {
        _imageLabel = [[UILabel alloc] init];
        [self addSubview:_imageLabel];
        
        _selectBtn = [[UIButton alloc] init];
        [self addSubview:_selectBtn];
        
        _colorLabel = [[UILabel alloc] init];
        [self addSubview:_colorLabel];
        
        _colorArray = [NSMutableArray array];
        for (NSInteger i = 0; i < 8; ++i) {
            _colorBtn = [UIButton buttonWithType:UIButtonTypeSystem];
            [_colorArray addObject:_colorBtn];
            [self addSubview:_colorBtn];
        }
    }
    
    return self;
}

- (void)drawRect:(CGRect)rect {
    [super drawRect:rect];
    
    _colorLabel.frame = CGRectMake(20, 5, 50, 30);
    _colorLabel.text = @"Color";
    _imageLabel.frame = CGRectMake(20, 40, 140, 30);
    _imageLabel.text = @"Image";
    
    for (NSInteger i = 0; i < _colorArray.count; i++) {
        [[[self colorArray][i] layer] setCornerRadius:KBUTTON_WIDTH / 2];
        [[[self colorArray][i] layer] setMasksToBounds:YES];
        [[_colorArray[i] layer] setBorderWidth:0.5f];
        [[_colorArray[i] layer] setBorderColor:UIColor.systemGray4Color.CGColor];
    }
    
    [_colorArray[0] setBackgroundColor:[UIColor redColor]];
    [_colorArray[1] setBackgroundColor:[UIColor orangeColor]];
    [_colorArray[2] setBackgroundColor:[UIColor yellowColor]];
    [_colorArray[3] setBackgroundColor:[UIColor greenColor]];
    [_colorArray[4] setBackgroundColor:[UIColor blueColor]];
    [_colorArray[5] setBackgroundColor:[UIColor brownColor]];
    [_colorArray[6] setBackgroundColor:[UIColor purpleColor]];
    [_colorArray[7] setBackgroundColor:[UIColor whiteColor]];
    
    _selectBtn.layer.borderWidth = 1.0;
    _selectBtn.layer.borderColor = UIColor.systemGray4Color.CGColor;
    [_selectBtn setTitle:@"Select Image" forState:UIControlStateNormal];
    [_selectBtn setTitleColor:UIColor.blackColor forState:UIControlStateNormal];
    _selectBtn.layer.cornerRadius = 7;
    
    [self addConstraint];
}
 
- (void)addConstraint {
    NSInteger offset = 10;
    for (NSInteger i = 0; i < _colorArray.count; ++i) {
        [_colorArray[i] mas_makeConstraints:^(MASConstraintMaker *make) {
            make.right.equalTo(self.mas_right).offset( - offset);
            make.top.equalTo(self.mas_top).offset(5);
            make.width.equalTo(@KBUTTON_WIDTH);
            make.height.equalTo(@KBUTTON_HEIGHT);
        }];
        offset += 40;
    }
    
    [_selectBtn mas_makeConstraints:^(MASConstraintMaker *make) {
        make.right.equalTo(self.mas_right).offset(-25);
        make.top.equalTo(self.colorLabel.mas_bottom).offset(5);
        make.width.mas_equalTo(180);
        make.height.equalTo(@35);
    }];
}

@end