ios彩票标题按钮(左文字右图片)
1 #import <UIKit/UIKit.h> 2 3 @interface NJTitleButton : UIButton 4 5 @end 6 7 8 #import "NJTitleButton.h" 9 10 @interface NJTitleButton () 11 @property (nonatomic, strong) UIFont *myFont; 12 @end 13 14 @implementation NJTitleButton 15 16 - (id)initWithCoder:(NSCoder *)aDecoder 17 { 18 19 if (self = [super initWithCoder:aDecoder]) { 20 [self setup]; 21 } 22 return self; 23 } 24 25 - (id)initWithFrame:(CGRect)frame 26 { 27 if (self = [super initWithFrame:frame]) { 28 [self setup]; 29 } 30 return self; 31 } 32 - (void)setup 33 { 34 // 记录按钮标题的字体 35 self.myFont = [UIFont systemFontOfSize:15]; 36 // 设置标题的字体 37 self.titleLabel.font = self.myFont; 38 // 设置按钮的图片显示的内容默认为剧中(为了不拉伸) 39 self.imageView.contentMode = UIViewContentModeCenter; 40 } 41 42 // 用于返回按钮上标题的位置, 传入按钮的rect 43 - (CGRect)titleRectForContentRect:(CGRect)contentRect 44 { 45 CGFloat titleX = 0; 46 CGFloat titleY = 0; 47 CGFloat titleH = contentRect.size.height; 48 // 获取当前按钮上的文字 49 // [self titleForState:UIControlStateNormal]; 50 NSString *title = self.currentTitle; 51 CGSize maxSize = CGSizeMake(MAXFLOAT, MAXFLOAT); 52 NSMutableDictionary *md = [NSMutableDictionary dictionary]; 53 // 死循环的原因是self.titleLabel需要访问titleLabel, 而self.titleLabel又需要调用当前方法获取title的范围, 所有死循环 54 // md[NSFontAttributeName] = self.titleLabel.font; 55 NSLog(@"%@", self.myFont); 56 md[NSFontAttributeName] = self.myFont; 57 58 // 计算文字的范围 59 CGFloat titleW = 0; 60 // 判断是否是xcode5 , 如果是就编译一下代码, 如果不是就不编译 61 CGRect titleRect = [title boundingRectWithSize:maxSize options:NSStringDrawingUsesLineFragmentOrigin attributes:md context:nil]; 62 titleW = titleRect.size.width; 63 64 return CGRectMake(titleX, titleY, titleW, titleH); 65 } 66 - (CGRect)imageRectForContentRect:(CGRect)contentRect 67 { 68 69 CGFloat imageY = 0; 70 CGFloat imageH = contentRect.size.height; 71 CGFloat imageW = 16; 72 // 图片的X = 按钮的宽度 - 图片宽度 73 CGFloat imageX = contentRect.size.width - imageW; 74 return CGRectMake(imageX, imageY, imageW, imageH); 75 } 76 @end