//
//  POPBaseControl.h
//  Animations
//
//  Created by YouXianMing on 16/5/26.
//  Copyright © 2016年 YouXianMing. All rights reserved.
//

#import <UIKit/UIKit.h>
@class POPBaseControl;@protocol POPBaseControlDelegate <NSObject>/***  缩放百分比事件**  @param controll PressControll对象*  @param percent  百分比*/
- (void)POPBaseControl:(POPBaseControl *)controll currentPercent:(CGFloat)percent;/***  事件触发**  @param controll PressControll对象*/
- (void)POPBaseControlEvent:(POPBaseControl *)controll;@end@interface POPBaseControl : UIView/***  代理*/
@property (nonatomic, weak) id <POPBaseControlDelegate>  delegate;/***  动画时间,默认值为0.4*/
@property (nonatomic) CFTimeInterval animationDuration;/***  目标对象*/
@property (nonatomic, weak) id target;/***  事件*/
@property (nonatomic) SEL      selector;/***  是否有效*/
@property (nonatomic) BOOL     enabled;/***  是否选中*/
@property (nonatomic) BOOL     selected;#pragma mark - Properties used by SubClass & Methods Overwrite by subClass./***  容器view,用于子类添加控件*/
@property (nonatomic, strong, readonly) UIView  *contentView;/***  当前动画比例(子类继承的时候重载)**  @param percent 比例*/
- (void)currentPercent:(CGFloat)percent;/***  事件激活了*/
- (void)controllEventActived;@end

//
//  POPBaseControl.m
//  Animations
//
//  Created by YouXianMing on 16/5/26.
//  Copyright © 2016年 YouXianMing. All rights reserved.
//

#import "POPBaseControl.h"
#import "POP.h"@interface POPBaseControl ()@property (nonatomic, strong) UIView   *absView;
@property (nonatomic, strong) UIButton *button;
@property (nonatomic, strong) UIView   *contentView;@property (nonatomic) CGFloat percent;@end@implementation POPBaseControl- (void)layoutSubviews {[super layoutSubviews];_button.frame       = CGRectMake(0, 0, self.frame.size.width, self.frame.size.height);_contentView.bounds = CGRectMake(0, 0, self.frame.size.width, self.frame.size.height);
}- (instancetype)initWithFrame:(CGRect)frame {if (self = [super initWithFrame:frame]) {// 动画时间_animationDuration = 0.4f;// 隐身的view_absView                        = [[UIView alloc] init];_absView.userInteractionEnabled = NO;_absView.backgroundColor        = [UIColor clearColor];[self addSubview:_absView];// 容器View_contentView                        = [[UIView alloc] initWithFrame:self.bounds];_contentView.userInteractionEnabled = NO;[self addSubview:_contentView];// 按钮_button = [[UIButton alloc] initWithFrame:self.bounds];[self addSubview:_button];// 按钮事件[_button addTarget:self action:@selector(touchBeginOrTouchDragEnter) forControlEvents:UIControlEventTouchDown | UIControlEventTouchDragEnter];[_button addTarget:self action:@selector(touchUpInside)   forControlEvents:UIControlEventTouchUpInside];[_button addTarget:self action:@selector(touchDragExitOrTouchCancel)   forControlEvents:UIControlEventTouchDragExit | UIControlEventTouchCancel];}return self;
}#pragma mark - Animations.- (void)touchUpInside {[self touchDragExitOrTouchCancel];[self controllEventActived];if (self.target && self.selector) {#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Warc-performSelector-leaks"[self.target performSelector:self.selector withObject:self];
#pragma clang diagnostic pop}if (self.delegate && [self.delegate respondsToSelector:@selector(POPBaseControlEvent:)]) {[self.delegate POPBaseControlEvent:self];}
}- (void)touchDragExitOrTouchCancel {[_absView.layer pop_removeAllAnimations];POPBasicAnimation *scaleAnimation = [POPBasicAnimation animationWithPropertyNamed:kPOPLayerOpacity];scaleAnimation.toValue            = @(1);scaleAnimation.delegate           = self;scaleAnimation.duration           = _animationDuration;[_absView.layer pop_addAnimation:scaleAnimation forKey:nil];
}- (void)touchBeginOrTouchDragEnter {[_absView.layer pop_removeAllAnimations];POPBasicAnimation *scaleAnimation = [POPBasicAnimation animationWithPropertyNamed:kPOPLayerOpacity];scaleAnimation.toValue            = @(0);scaleAnimation.delegate           = self;scaleAnimation.duration           = _animationDuration;[_absView.layer pop_addAnimation:scaleAnimation forKey:nil];
}#pragma mark - POPAnimation's delegate.- (void)pop_animationDidApply:(POPAnimation *)anim {NSNumber *toValue = (NSNumber *)[anim valueForKeyPath:@"currentValue"];_percent          = (toValue.floatValue - [POPBaseControl calculateConstantWithX1:0 y1:1 x2:1 y2:0]) / [POPBaseControl calculateSlopeWithX1:0 y1:1 x2:1 y2:0];[self currentPercent:_percent];
}#pragma mark - Overwrite by subClass.- (void)currentPercent:(CGFloat)percent {}- (void)controllEventActived {}#pragma mark - Math.+ (CGFloat)calculateSlopeWithX1:(CGFloat)x1 y1:(CGFloat)y1 x2:(CGFloat)x2 y2:(CGFloat)y2 {return (y2 - y1) / (x2 - x1);
}+ (CGFloat)calculateConstantWithX1:(CGFloat)x1 y1:(CGFloat)y1 x2:(CGFloat)x2 y2:(CGFloat)y2 {return (y1*(x2 - x1) - x1*(y2 - y1)) / (x2 - x1);
}#pragma mark - setter & getter.@synthesize enabled = _enabled;- (void)setEnabled:(BOOL)enabled {_button.enabled = enabled;
}- (BOOL)enabled {return _button.enabled;
}@synthesize selected = _selected;- (void)setSelected:(BOOL)selected {_button.selected = selected;
}- (BOOL)selected {return _button.selected;
}@end