ios/Timi/Class/Base/Utils/Switch/CustomSwitch.m

//
//  CustomSwitch.m
//  Starbuds
//
//  Created by 翟玉磊 on 2020/1/17.
//  Copyright © 2020 翟玉磊. All rights reserved.
//

#import "CustomSwitch.h"

@interface CustomSwitch ()

@property (nonatomic, readwrite, strong) UIImageView *bgImageView;
@property (nonatomic, readwrite, strong) UIImageView *selectImageView;

@property (nonatomic, readwrite, assign) BOOL feedStatus;

@end

@implementation CustomSwitch

#pragma mark - Public Method
- (void)setOn:(BOOL)on {
    _on = on;
    // 主动设置的都没有震动效果
    self.feedStatus = NO;
    [self changeStatus];
}

- (void)setBgColor:(UIColor *)bgColor {
    _bgColor = bgColor;
    self.bgImageView.backgroundColor = bgColor;
}

- (void)setBgImage:(UIImage *)bgImage {
    _bgImage = bgImage;
    self.bgImageView.image = bgImage;
}

#pragma mark - Private Method
- (instancetype)initWithCoder:(NSCoder *)coder {
    if (self = [super initWithCoder:coder]) {
        // 初始化
        [self _setup];
        
        // 创建子控件
        [self _setupSubViews];
        
        // 布局子控件
        [self _makeSubViewsConstraints];
    }
    return self;
}
- (instancetype)initWithFrame:(CGRect)frame{
    if (self = [super initWithFrame:frame]) {
        // 初始化
        [self _setup];
        
        // 创建子控件
        [self _setupSubViews];
        
        // 布局子控件
        [self _makeSubViewsConstraints];
    }
    return self;
}

#pragma mark - 事件处理Or辅助方法
- (void)topAction:(UITapGestureRecognizer *)tap {
    self.on = !self.on;
    self.feedStatus = YES;
    [self changeStatus];
}

- (void)changeStatus {
    [UIView animateWithDuration:.3 animations:^{
        CGFloat width = self.height - self.margin * 2;
        if (self.on) {
            self.selectImageView.frame = CGRectMake(self.f_width - self.margin - width, self.margin, width, width);
        }else {
            self.selectImageView.frame = CGRectMake(self.margin, self.margin, width, width);
        }
    } completion:^(BOOL finished) {
        if (self.on) {
            if (self.onImage) {
                self.selectImageView.image = self.onImage;
            }else {
                self.selectImageView.backgroundColor = self.onTintColor;
            }
        }else {
            if (self.offImage) {
                self.selectImageView.image = self.offImage;
            }else {
                self.selectImageView.backgroundColor = self.thumbTintColor;
            }
        }
        if (self.feedStatus) {
            // 都是轻度震动
            if (@available(iOS 10.0, *)) {
                UIImpactFeedbackGenerator *feedBackGenertor = [[UIImpactFeedbackGenerator alloc] initWithStyle:UIImpactFeedbackStyleLight];
                [feedBackGenertor impactOccurred];
            } else {
                // Fallback on earlier versions
                AudioServicesPlaySystemSound(1519);
            }
        }
    }];
}

#pragma mark - Private Method
// 当用户点击到当前控件bounds时，会调用该方法，返回值决定了当前控件是否响应该事件
- (BOOL)beginTrackingWithTouch:(UITouch *)touch withEvent:(UIEvent *)event {
    
    return [super beginTrackingWithTouch:touch withEvent:event]; // 返回系统默认处理
}

// 如果 beginTrackingWithTouch 返回值 为YES，则以下方法 会在 点击手机屏幕移动 时 调用，如果这里返回值为YES，则继续移动会多次调用。
// 如果 返回 NO，则 即使 继续移动也不会再调用当前方法了。
- (BOOL)continueTrackingWithTouch:(UITouch *)touch withEvent:(UIEvent *)event {
    
    return [super continueTrackingWithTouch:touch withEvent:event];
}

// 当点击屏幕释放时，调用该方法
- (void)endTrackingWithTouch:(UITouch *)touch withEvent:(UIEvent *)event {
    self.on = !self.on;
    self.feedStatus = YES;
    [self changeStatus];
    [super endTrackingWithTouch:touch withEvent:event];
}

// 取消时会调用，如果当前视图被移除。或者来电
- (void)cancelTrackingWithEvent:(UIEvent *)event {
    [super cancelTrackingWithEvent:event];
}

- (void)_setup{

}

#pragma mark - 创建子控件
- (void)_setupSubViews{
    [self addSubview:self.bgImageView];
    [self addSubview:self.selectImageView];
    
//    self.userInteractionEnabled = YES;
//    UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(topAction:)];
//    tap.numberOfTapsRequired = 1;
//    tap.numberOfTouchesRequired = 1;
//    [self addGestureRecognizer:tap];
}

#pragma mark - 布局子控件
- (void)_makeSubViewsConstraints{
    
    self.bgImageView.frame = self.bounds;
    self.selectImageView.frame = CGRectMake(self.margin, self.margin, self.height - self.margin * 2, self.height - self.margin * 2);
}

- (UIImageView *)bgImageView {
    if (!_bgImageView) {
        _bgImageView = [UIImageView new];
    }
    return _bgImageView;
}
- (UIImageView *)selectImageView {
    if (!_selectImageView) {
        _selectImageView = [UIImageView new];
    }
    return _selectImageView;
}
@end