ios/Timi/Class/AppController/ChatRoom/ChatRoomLive/XYFloatingDragView.m

//
//  XYFloatingDragView.m
//  Starbuds
//
//  Created by 翟玉磊 on 2020/6/29.
//  Copyright © 2020 翟玉磊. All rights reserved.
//

#import "XYFloatingDragView.h"

@interface XYFloatingDragView ()

/// 悬浮按钮的拖拽范围  不设置则默认父view的bounds
@property (nonatomic, assign) CGRect cagingArea;
/// 停留样式 默认 无吸附边界
@property (nonatomic, assign) XYFloatingDragAutomaticStyle remainStyle;
/// 内容类型 默认语音
@property (nonatomic, assign) XYFloatingDragType floatingDataType;

@end

@implementation XYFloatingDragView

#pragma mark - Public
// 根据类型创建悬浮窗 会默认好初始值
+ (instancetype)floatingDragViewWithFloatingDragType:(XYFloatingDragType)type {
    XYFloatingDragView *floatingDragView = nil;
    switch (type) {
        case XYFloatingDragTypeVoiceChatRoom:
        {
            CGRect cagingArea = CGRectMake(0, NAVGATION_HEIGHT, SCREEN_WIDTH, SCREEN_HEIGHT - NAVGATION_HEIGHT - TABBAR_HEIGHT);
            floatingDragView = [[XYFloatingDragView alloc] initWithFrame:CGRectMake(SCREEN_WIDTH - 162.0f, cagingArea.size.height - 48.0f, 162.0f, 48.0f)];
            floatingDragView.floatingDataType = type;
            floatingDragView.cagingArea = cagingArea;
            floatingDragView.remainStyle = XYFloatingDragAutomaticStyleMargin;
            
            // 语音view
            XYFloatingDragVoiceView *voiceView = [[XYFloatingDragVoiceView alloc] initWithFrame:floatingDragView.bounds];
            [floatingDragView addSubview:voiceView];
            floatingDragView.voiceView = voiceView;
            [voiceView setCloseFloatingDragBlock:^{
                if (floatingDragView.delegate && [floatingDragView.delegate respondsToSelector:@selector(closeFloatingDragWindow)]) {
                   [floatingDragView.delegate closeFloatingDragWindow];
                }
                [floatingDragView dismissAnimation:YES];
            }];
        }
            break;
            
        default:
            break;
    }
    return floatingDragView;
}

/// 显示view
- (void)showAnimation:(BOOL)animation {
    if (!self.superview) {
        // 没有父view则进行添加
        [ApplicationDelegate.tabbarVC.view addSubview:self];
    }
    // 把悬浮窗移到最上层
    [ApplicationDelegate.tabbarVC.view bringSubviewToFront:self];
    if (animation) {
        [UIView animateWithDuration:.3 animations:^{
            self.alpha = 1;
        } completion:^(BOOL finished) {
            
        }];
    }
}

/// 隐藏view且销毁view
- (void)dismissAnimation:(BOOL)animation {
    if (animation) {
        [UIView animateWithDuration:.3 animations:^{
            self.alpha = 0;
        } completion:^(BOOL finished) {
            [self clear];
        }];
    }else {
        [self clear];
    }
}

/// 设置view信息
- (void)setupViewDataWithModel:(id)model {
    switch (self.floatingDataType) {
        case XYFloatingDragTypeVoiceChatRoom:
            if (self.voiceView) {
                [self.voiceView setupViewDataWithModel:model];
            }
            break;
            
        default:
            break;
    }
}

/// 销毁view
- (void)clear {
    switch (self.floatingDataType) {
        case XYFloatingDragTypeVoiceChatRoom:
            if (self.voiceView) {
                [self.voiceView clear];
                [self.voiceView removeFromSuperview];
            }
            break;
            
        default:
            break;
    }
}

#pragma mark - Action
// 拖动手势处理
- (void)handlePan:(UIPanGestureRecognizer *)sender {
    if(sender.state == UIGestureRecognizerStateChanged){
         {
          CGPoint translation = [sender translationInView:[self superview]];

          CGFloat newXOrigin = CGRectGetMinX(self.frame) + translation.x;
          CGFloat newYOrigin = CGRectGetMinY(self.frame) + translation.y;

          CGRect cagingArea = self.cagingArea;

          CGFloat cagingAreaOriginX = CGRectGetMinX(cagingArea);
          CGFloat cagingAreaOriginY = CGRectGetMinY(cagingArea);

          CGFloat cagingAreaRightSide = cagingAreaOriginX + CGRectGetWidth(cagingArea);
          CGFloat cagingAreaBottomSide = cagingAreaOriginY + CGRectGetHeight(cagingArea);

          if (!CGRectEqualToRect(cagingArea, CGRectZero)) {
              if (newXOrigin <= cagingAreaOriginX ||
                  newXOrigin + CGRectGetWidth(self.frame) >= cagingAreaRightSide) {
                  newXOrigin = CGRectGetMinX(self.frame);
              }
              if(newYOrigin <= cagingAreaOriginY ||
                 newYOrigin + CGRectGetHeight(self.frame) >= cagingAreaBottomSide) {
                  newYOrigin = CGRectGetMinY(self.frame);
              }
          }
             self.frame = CGRectMake(newXOrigin,
                                        newYOrigin,
                                        CGRectGetWidth(self.frame),
                                        CGRectGetHeight(self.frame));

                [sender setTranslation:(CGPoint){0, 0} inView:[self superview]];
                  
         }
    
    }else if (sender.state == UIGestureRecognizerStateEnded){
        
        CGSize dragBtnSize = self.frame.size;
        CGFloat dragBtn_Y = CGRectGetMinY(self.frame);
        CGFloat dragBtn_X = 0;
        CGFloat  duration = 0.7;//默认时间
        //计算出按钮距离边界的差 用作动画时间的计算
        CGFloat difference = 1.0;
        switch (_remainStyle) {
            case XYFloatingDragAutomaticStyleNone:
                return;
            case XYFloatingDragAutomaticStyleMargin:
            {
                if (self.center.x >= self.cagingArea.size.width / 2.0) {
                   //右
                    dragBtn_X = self.cagingArea.size.width - dragBtnSize.width;
                    difference =   (self.cagingArea.size.width - CGRectGetMaxX(self.frame)) /  self.cagingArea.size.width;
                }else{
                    //左
                    dragBtn_X = 0;
                    difference =   CGRectGetMidX(self.frame) /  self.cagingArea.size.width;
                }
            }
                break;
            case XYFloatingDragAutomaticStyleMarginLeft:
                dragBtn_X = 0;
                difference =   CGRectGetMidX(self.frame) /  self.cagingArea.size.width;
                break;
            case XYFloatingDragAutomaticStyleMarginRight:
                
               dragBtn_X = self.cagingArea.size.width - dragBtnSize.width;
                difference =   (self.cagingArea.size.width - CGRectGetMaxX(self.frame)) /  self.cagingArea.size.width;
                break;
            default:
                break;
        }
        //距离越近。动画时间就越短
        duration  = duration * difference;
        [UIView animateWithDuration:duration animations:^{
            self.frame = CGRectMake(dragBtn_X, dragBtn_Y, dragBtnSize.width, dragBtnSize.height);
        }];
    }
}

// 处理 点击事件
- (void)handleTap:(UITapGestureRecognizer *)sender {
    if (self.delegate && [self.delegate respondsToSelector:@selector(openFloatingDragWindow)]) {
        [self.delegate openFloatingDragWindow];
    }
}

#pragma mark - 初始化
- (instancetype)initWithFrame:(CGRect)frame {
    
    if (self = [super initWithFrame:frame]) {
        
        [self _setup];
        [self _setupSubViews];
        [self _makeSubViewsConstraint];
    }
    return self;
}

#pragma mark - 配置属性
- (void)_setup {
    
    // 添加手势
    UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePan:)];
    [self addGestureRecognizer:pan];
    
    UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTap:)];
    [self addGestureRecognizer:tap];
}

#pragma mark - 设置子控件
- (void)_setupSubViews {
    
}

#pragma mark - 布局子控件
- (void)_makeSubViewsConstraint {
    
    // 设置边框和阴影
    [self addViewShadowWithShadowColor:ColorFromHexStringWithAlpha(@"#FF4D79", 0.5f) shadowOffset:CGSizeMake(0, 4) shadowOpacity:1 shadowRadius:10.0f cornerRadius:self.f_heigh/2];
}

#pragma mark - Getter/Setter
- (CGRect)cagingArea {
    if (_cagingArea.size.width == 0 || _cagingArea.size.height == 0) {
        // 可拖动范围如果宽高有一项为空则默认父控制器的bounds
        if (self.superview) {
            _cagingArea = self.superview.bounds;
        }
    }
    return _cagingArea;
}

@end