173 lines
6.8 KiB
Objective-C
173 lines
6.8 KiB
Objective-C
//
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// UIButton+button.m
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// TTJF
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//
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// Created by wbzhan on 2018/4/24.
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// Copyright © 2018年 TTJF. All rights reserved.
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//
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#import "UIButton+button.h"
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#import <objc/runtime.h>
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@interface UIButton()
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@property (nonatomic, assign) BOOL isIgnoreEvent;
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@end
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@implementation UIButton (button)
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@dynamic hitTestEdgeInsets;
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static const NSString *KEY_HIT_TEST_EDGE_INSETS = @"HitTestEdgeInsets";
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static const char *UIControl_timeInterval = "UIControl_timeInterval";
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static const char *UIControl_enventIsIgnoreEvent = "UIControl_enventIsIgnoreEvent";
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-(instancetype)init{
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self = [super init];
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if (self) {
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self.adjustsImageWhenHighlighted = NO;
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}
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return self;
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}
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-(void)setHighlighted:(BOOL)highlighted{
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[super setHighlighted:NO];
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}
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// runtime 动态绑定 属性
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- (void)setIsIgnoreEvent:(BOOL)isIgnoreEvent
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{
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objc_setAssociatedObject(self, UIControl_enventIsIgnoreEvent, @(isIgnoreEvent), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
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}
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- (BOOL)isIgnoreEvent{
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return [objc_getAssociatedObject(self, UIControl_enventIsIgnoreEvent) boolValue];
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}
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- (NSTimeInterval)timeInterval
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{
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return [objc_getAssociatedObject(self, UIControl_timeInterval) doubleValue];
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}
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- (void)setTimeInterval:(NSTimeInterval)timeInterval
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{
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objc_setAssociatedObject(self, UIControl_timeInterval, @(timeInterval), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
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}
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+ (void)load
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{
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// Method Swizzling
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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SEL selA = @selector(sendAction:to:forEvent:);
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SEL selB = @selector(after_sendAction:to:forEvent:);
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Method methodA = class_getInstanceMethod(self,selA);
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Method methodB = class_getInstanceMethod(self, selB);
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BOOL isAdd = class_addMethod(self, selA, method_getImplementation(methodB), method_getTypeEncoding(methodB));
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if (isAdd) {
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class_replaceMethod(self, selB, method_getImplementation(methodA), method_getTypeEncoding(methodA));
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}else{
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//添加失败了 说明本类中有methodB的实现，此时只需要将methodA和methodB的IMP互换一下即可。
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method_exchangeImplementations(methodA, methodB);
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}
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});
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}
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- (void)after_sendAction:(SEL)action to:(id)target forEvent:(UIEvent *)event
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{
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self.timeInterval = self.timeInterval == 0 ? defaultInterval : self.timeInterval;
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if (self.isIgnoreEvent){
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return;
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}else if (self.timeInterval > 0){
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dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(self.timeInterval * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
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[self setIsIgnoreEvent:NO];
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});
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}
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self.isIgnoreEvent = YES;
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// 这里看上去会陷入递归调用死循环，但在运行期此方法是和sendAction:to:forEvent:互换的，相当于执行sendAction:to:forEvent:方法，所以并不会陷入死循环。
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[self after_sendAction:action to:target forEvent:event];
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}
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#pragma mark --点击区域以及button按钮文字位置
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- (void)setImagePosition:(ImagePosition)postion spacing:(CGFloat)spacing
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{
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// [self setTitle:self.currentTitle forState:UIControlStateNormal];
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// [self setImage:self.currentImage forState:UIControlStateNormal];
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CGFloat imageWidth = self.imageView.image.size.width;
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CGFloat imageHeight = self.imageView.image.size.height;
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CGFloat labelWidth = [self.titleLabel.text sizeWithAttributes:@{NSFontAttributeName:self.titleLabel.font}].width;
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if (postion == ImagePositionRight && labelWidth >= self.frame.size.width - imageWidth) {
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labelWidth = self.frame.size.width - imageWidth;
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}
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CGFloat labelHeight = [self.titleLabel.text sizeWithAttributes:@{NSFontAttributeName:self.titleLabel.font}].height;
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CGFloat imageOffsetX = (imageWidth + labelWidth) / 2 - imageWidth / 2; //image中心移动的x距离
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CGFloat imageOffsetY = imageHeight / 2 + spacing / 2; //image中心移动的y距离
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CGFloat labelOffsetX = (imageWidth + labelWidth / 2) - (imageWidth + labelWidth) / 2; //label中心移动的x距离
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CGFloat labelOffsetY = labelHeight / 2 + spacing / 2; //label中心移动的y距离
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CGFloat tempWidth = MAX(labelWidth, imageWidth);
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CGFloat changedWidth = labelWidth + imageWidth - tempWidth;
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CGFloat tempHeight = MAX(labelHeight, imageHeight);
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CGFloat changedHeight = labelHeight + imageHeight + spacing - tempHeight;
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switch (postion) {
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case ImagePositionLeft:
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self.imageEdgeInsets = UIEdgeInsetsMake(0, -spacing / 2, 0, spacing / 2);
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self.titleEdgeInsets = UIEdgeInsetsMake(0, spacing / 2, 0, -spacing / 2);
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self.contentEdgeInsets = UIEdgeInsetsMake(0, spacing / 2, 0, spacing / 2);
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break;
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case ImagePositionRight:
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self.imageEdgeInsets = UIEdgeInsetsMake(0, labelWidth + spacing / 2, 0, -(labelWidth + spacing / 2));
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self.titleEdgeInsets = UIEdgeInsetsMake(0, -(imageWidth + spacing / 2), 0, imageWidth + spacing / 2);
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self.contentEdgeInsets = UIEdgeInsetsMake(0, spacing / 2, 0, spacing / 2);
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break;
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case ImagePositionTop:
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self.imageEdgeInsets = UIEdgeInsetsMake(-imageOffsetY, imageOffsetX, imageOffsetY, -imageOffsetX);
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self.titleEdgeInsets = UIEdgeInsetsMake(labelOffsetY, -labelOffsetX, -labelOffsetY, labelOffsetX);
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self.contentEdgeInsets = UIEdgeInsetsMake(imageOffsetY, -changedWidth / 2, changedHeight - imageOffsetY, -changedWidth / 2);
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break;
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case ImagePositionBottom:
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self.imageEdgeInsets = UIEdgeInsetsMake(imageOffsetY, imageOffsetX, -imageOffsetY, -imageOffsetX);
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self.titleEdgeInsets = UIEdgeInsetsMake(-labelOffsetY, -labelOffsetX, labelOffsetY, labelOffsetX);
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self.contentEdgeInsets = UIEdgeInsetsMake(changedHeight - imageOffsetY, -changedWidth / 2, imageOffsetY, -changedWidth / 2);
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break;
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default:
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break;
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}
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}
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-(void)setHitTestEdgeInsets:(UIEdgeInsets)hitTestEdgeInsets
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{
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NSValue *value = [NSValue value:&hitTestEdgeInsets withObjCType:@encode(UIEdgeInsets)];
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objc_setAssociatedObject(self, &KEY_HIT_TEST_EDGE_INSETS, value, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
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}
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-(UIEdgeInsets)hitTestEdgeInsets
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{
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NSValue *value = objc_getAssociatedObject(self, &KEY_HIT_TEST_EDGE_INSETS);
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if(value) {
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UIEdgeInsets edgeInsets; [value getValue:&edgeInsets]; return edgeInsets;
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}else {
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return UIEdgeInsetsZero;
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}
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}
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//点击区域
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- (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event
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{
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if(UIEdgeInsetsEqualToEdgeInsets(self.hitTestEdgeInsets, UIEdgeInsetsZero) || !self.enabled || self.hidden) {
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return [super pointInside:point withEvent:event];
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}
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CGRect relativeFrame = self.bounds;
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CGRect hitFrame = UIEdgeInsetsInsetRect(relativeFrame, self.hitTestEdgeInsets);
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return CGRectContainsPoint(hitFrame, point);
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}
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@end
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