第二十篇、自定义UIButton(设置title和image的位置)

#import "CustomButton.h"
#define ImageW  15
#define ImageH 15
#define KRadio  0.75


@implementation CustomButton

-(instancetype)initWithCoder:(NSCoder *)aDecoder{
    if (self = [super initWithCoder:aDecoder]) {
        
        //设置图片显示的样式
        //self.imageView.contentMode = UIViewContentModeCenter;
        //self.titleLabel.textAlignment = NSTextAlignmentCenter;
    }
    return self;
}

-(CGRect)titleRectForContentRect:(CGRect)contentRect{
    CGFloat titleW = contentRect.size.width * KRadio;
    CGFloat titleH = contentRect.size.height;
    return CGRectMake(0, 0, titleW, titleH);
}

-(CGRect)imageRectForContentRect:(CGRect)contentRect{
    
    
    CGFloat imageW = ImageW;
    CGFloat imageH = ImageH;
    CGFloat imageY = (contentRect.size.height-imageH) / 2.0;
    CGFloat imageX = contentRect.size.width * KRadio;
    return CGRectMake(imageX,imageY, imageW, imageH);
    
    
//    CGFloat imageW = ImageW;
//    CGFloat imageH = contentRect.size.height;
//    CGFloat imageX = contentRect.size.width-ImageW;
//    return CGRectMake(imageX,0, imageW, imageH);
}

-(void)setHighlighted:(BOOL)highlighted{
}

//- (IBAction)clickTitle:(UIButton *)sender {
//    
//    [UIView animateWithDuration:0.25 animations:^{
//        if (CGAffineTransformIsIdentity(sender.imageView.transform)) {
//            sender.imageView.transform = CGAffineTransformMakeRotation(M_PI);
//        }else{
//            sender.imageView.transform = CGAffineTransformIdentity;
//        }
//        
//    }];
//    
//}

@end