不多说直接上代码链接
https://github.com/HeYunDong/ExpandButton
#import "UIButton+LeeHitRect.h"
#import
static const char * kHitEdgeInsets = "hitEdgeInsets";
static const char* kHitScale ="hitScale";
static const char* kHitWidthScale ="hitWidthScale";
static const char* kHitHeightScale ="hitHeightScale";
@implementationUIButton (LeeHitRect)
#pragma mark - set Method
-(void)setHitEdgeInsets:(UIEdgeInsets)hitEdgeInsets{
NSValue *value = [NSValue value:&hitEdgeInsets withObjCType:@encode(UIEdgeInsets)];
objc_setAssociatedObject(self,kHitEdgeInsets, value, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
-(void)setHitScale:(CGFloat)hitScale{
CGFloatwidth =self.bounds.size.width* hitScale;
CGFloatheight =self.bounds.size.height* hitScale;
self.hitEdgeInsets=UIEdgeInsetsMake(-height, -width,-height, -width);
objc_setAssociatedObject(self, kHitScale, @(hitScale), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
-(void)setHitWidthScale:(CGFloat)hitWidthScale{
CGFloatwidth =self.bounds.size.width* hitWidthScale;
CGFloat height = self.bounds.size.height ;
self.hitEdgeInsets=UIEdgeInsetsMake(-height, -width,-height, -width);
objc_setAssociatedObject(self, kHitWidthScale, @(hitWidthScale), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
-(void)setHitHeightScale:(CGFloat)hitHeightScale{
CGFloat width = self.bounds.size.width;
CGFloatheight =self.bounds.size.height* hitHeightScale ;
self.hitEdgeInsets=UIEdgeInsetsMake(-height, -width,-height, -width);
objc_setAssociatedObject(self, kHitHeightScale, @(hitHeightScale), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
#pragma mark - get Method
-(UIEdgeInsets)hitEdgeInsets{
NSValue *value = objc_getAssociatedObject(self, kHitEdgeInsets);
UIEdgeInsetsedgeInsets;
[valuegetValue:&edgeInsets];
returnvalue ? edgeInsets:UIEdgeInsetsZero;
}
-(CGFloat)hitScale{
return [objc_getAssociatedObject(self, kHitScale) floatValue];
}
-(CGFloat)hitWidthScale{
return [objc_getAssociatedObject(self, kHitWidthScale) floatValue];
}
-(CGFloat)hitHeightScale{
return [objc_getAssociatedObject(self, kHitHeightScale) floatValue];
}
#pragma mark - override super method
-(BOOL)pointInside:(CGPoint)point withEvent:(UIEvent*)event{
//如果 button 边界值无变化 失效 隐藏 或者透明 直接返回
if(UIEdgeInsetsEqualToEdgeInsets(self.hitEdgeInsets, UIEdgeInsetsZero) || !self.enabled || self.hidden || self.alpha == 0 ) {
return [super pointInside:point withEvent:event];
}else{
CGRectrelativeFrame =self.bounds;
CGRect hitFrame = UIEdgeInsetsInsetRect(relativeFrame, self.hitEdgeInsets);
returnCGRectContainsPoint(hitFrame, point);
}
}
@end
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