iOS Button内の画像と文字の自由な配列

変換元:https://github.com/Phelthas/Demo_ButtonImageTitleEdgeInsets

#import 

typedef NS_ENUM(NSInteger, LXMImagePosition) {
    LXMImagePositionLeft = 0,              // ， ， 
    LXMImagePositionRight = 1,             // ， 
    LXMImagePositionTop = 2,               // ， 
    LXMImagePositionBottom = 3,            // ， 
};

@interface UIButton (LXMImagePosition)

/**
 *   UIButton titleEdgeInsets imageEdgeInsets 
 *   ： ， button   + +spacing
 *
 *  @param spacing  
 */
- (void)setImagePosition:(LXMImagePosition)postion spacing:(CGFloat)spacing;

@end

@implementation UIButton (LXMImagePosition)

- (void)setImagePosition:(LXMImagePosition)postion spacing:(CGFloat)spacing {
    CGFloat imageWith = self.imageView.image.size.width;
    CGFloat imageHeight = self.imageView.image.size.height;
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
//    CGFloat labelWidth = [self.titleLabel.text sizeWithFont:self.titleLabel.font].width;
//    CGFloat labelHeight = [self.titleLabel.text sizeWithFont:self.titleLabel.font].height;
#pragma clang diagnostic pop
    
    // gzd   16.9.28
    CGSize  labelSize   = CGSizeZero;
    CGFloat labelWidth  = 0;
    CGFloat labelHeight = 0;
    if ([self.titleLabel.text respondsToSelector:@selector(boundingRectWithSize:options:attributes:context:)]) {
        labelSize = [self.titleLabel.text boundingRectWithSize:self.bounds.size options:NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading attributes:@{NSFontAttributeName:self.titleLabel.font} context:nil].size;
    }else {
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
        labelSize = [self.titleLabel.text sizeWithFont:self.titleLabel.font];
#pragma clang diagnostic pop
    }
    labelWidth = labelSize.width;
    labelHeight = labelSize.height;
    //----------------
    
    CGFloat imageOffsetX = (imageWith + labelWidth) / 2 - imageWith / 2;//image x 
    CGFloat imageOffsetY = imageHeight / 2 + spacing / 2;//image y 
    CGFloat labelOffsetX = (imageWith + labelWidth / 2) - (imageWith + labelWidth) / 2;//label x 
    CGFloat labelOffsetY = labelHeight / 2 + spacing / 2;//label y 
    
    switch (postion) {
        case LXMImagePositionLeft:
            self.imageEdgeInsets = UIEdgeInsetsMake(0, -spacing/2, 0, spacing/2);
            self.titleEdgeInsets = UIEdgeInsetsMake(0, spacing/2, 0, -spacing/2);
            break;
            
        case LXMImagePositionRight:
            self.imageEdgeInsets = UIEdgeInsetsMake(0, labelWidth + spacing/2, 0, -(labelWidth + spacing/2));
            self.titleEdgeInsets = UIEdgeInsetsMake(0, -(imageHeight + spacing/2), 0, imageHeight + spacing/2);
            break;
            
        case LXMImagePositionTop:
            self.imageEdgeInsets = UIEdgeInsetsMake(-imageOffsetY, imageOffsetX, imageOffsetY, -imageOffsetX);
            self.titleEdgeInsets = UIEdgeInsetsMake(labelOffsetY, -labelOffsetX, -labelOffsetY, labelOffsetX);
            break;
            
        case LXMImagePositionBottom:
            self.imageEdgeInsets = UIEdgeInsetsMake(imageOffsetY, imageOffsetX, -imageOffsetY, -imageOffsetX);
            self.titleEdgeInsets = UIEdgeInsetsMake(-labelOffsetY, -labelOffsetX, labelOffsetY, labelOffsetX);
            break;
            
        default:
            break;
    }
}

@end