kudians/ZBProject/Tools/FMPlaceholde...

//
//  FMPlaceholderView.m
//  FMListPlaceholderExample
//
//  Created by Mingo on 2018/8/9.
//  Copyright © 2017年 袁凤鸣. All rights reserved.
//  项目地址：https://github.com/yfming93/FMListPlaceholder
//  作者博客：https://www.yfmingo.cn
//

#import "FMPlaceholderView.h"
#import "FMListPlaceholder.h"
#import "NSBundle+FMListPlaceholder.h"

#define kFMScreenW   [UIScreen mainScreen].bounds.size.width       //屏幕宽度
#define kFMScreenH   [UIScreen mainScreen].bounds.size.height      //屏幕高度
#define kFit6(x)       ((kFMScreenW)*((x)/375.0))
#define kTipsH kFit6(22)

@interface FMPlaceholderView ()

@property (nonatomic, strong) NSString *defaultEmptyTips;
@property (nonatomic, strong) NSString *defaultEmptyCoverName;

@end

@implementation FMPlaceholderView

- (instancetype)initWithFrame:(CGRect)frame{
    if (self = [super initWithFrame:frame]) {
        self.userInteractionEnabled = YES;
        _defaultEmptyTips = @"还没有记录";
        _coverSpaceToTips = kFit6(10);
        _coverCenterYOffset = 0;
        self.hidden = YES;
        _defaultEmptyCoverName=@"no_order";
//        if (FMListPlaceholder.sharedInstance.defaultBackgroundColor) {
//            self.backgroundColor = FMListPlaceholder.sharedInstance.defaultBackgroundColor;
//        }
//
//        if (FMListPlaceholder.sharedInstance.defaultTips.length) {
//            _defaultEmptyTips = FMListPlaceholder.sharedInstance.defaultTips;
//        }
//
//        if (FMListPlaceholder.sharedInstance.defaultCoverName.length) {
//            _defaultEmptyCoverName = FMListPlaceholder.sharedInstance.defaultCoverName;
//        }
        [self createUI];
    }
    return self;
}

-(void)setCoverSize:(CGSize)coverSize {
    _coverSize = coverSize;
    _emptyCover.frame = CGRectMake((self.frame.size.width - coverSize.width)/2,
                                   (self.frame.size.height - coverSize.height) - _coverSpaceToTips - kTipsH,
                                   coverSize.width,
                                   coverSize.height);
    _emptyCover.center = CGPointMake(self.center.x, self.center.y - _coverSpaceToTips/2 - kTipsH/2  + _coverCenterYOffset);
    _emptyTips.frame = CGRectMake(0,
                                  CGRectGetMaxY(self.emptyCover.frame) + _coverSpaceToTips,
                                  self.frame.size.width,
                                  kTipsH);
}

-(void)setCoverCenterYOffset:(CGFloat)coverCenterYOffset {
    _coverCenterYOffset = coverCenterYOffset;
    _emptyCover.center = CGPointMake(self.center.x, self.center.y - _coverSpaceToTips/2 - kTipsH/2  + coverCenterYOffset);
    _emptyTips.frame = CGRectMake(0,
                                  CGRectGetMaxY(self.emptyCover.frame) + _coverSpaceToTips,
                                  self.frame.size.width,
                                  kTipsH);
}

-(void)setcoverSpaceToTips:(CGFloat)coverSpaceToTips {
    _coverSpaceToTips = coverSpaceToTips;
    
    _emptyCover.center = CGPointMake(self.center.x, self.center.y - _coverSpaceToTips/2 - kTipsH/2 );
    _emptyTips.frame = CGRectMake(0,
                                  CGRectGetMaxY(self.emptyCover.frame) + _coverSpaceToTips,
                                  self.frame.size.width,
                                  kTipsH);
}

-(void)setDefaultPlaceholder:(UIView *)defaultPlaceholder {
    _defaultPlaceholder = defaultPlaceholder;
    for (UIView *v in self.subviews) {
        [v removeFromSuperview];
    }
    
    [self addSubview:_defaultPlaceholder];
    _defaultPlaceholder.center = self.center;
    _defaultPlaceholder.userInteractionEnabled = YES;
    
    UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapAction)];
    [_defaultPlaceholder addGestureRecognizer:tap];
    
    if (self.coverCenterYOffset) {
         _defaultPlaceholder.center = CGPointMake(self.center.x, self.center.y - _coverSpaceToTips/2);
    }
    
    if (self.coverSize.width) {
        [_defaultPlaceholder setBounds:CGRectMake(0, 0, self.coverSize.width, self.coverSize.height)];
    }
}

- (UIImageView *)emptyCover{
    if (!_emptyCover) {
        _emptyCover =[[UIImageView alloc] initWithImage:[UIImage imageNamed:_defaultEmptyCoverName]];
        if (!_defaultEmptyCoverName.length) {
            UIImage *ima = [NSBundle fm_coverImage];
            [_emptyCover setImage:ima];
        }
        _emptyCover.contentMode =  UIViewContentModeScaleToFill;
        
        CGSize coverSize = CGSizeMake(self.frame.size.width/5, self.frame.size.width/5);
        if (FMListPlaceholder.sharedInstance.defaultCoverSize.width) {
            coverSize = FMListPlaceholder.sharedInstance.defaultCoverSize;
        }
        
        _emptyCover.frame = CGRectMake((self.frame.size.width - coverSize.width)/2,
                                       (self.frame.size.height - coverSize.height) - _coverSpaceToTips - kTipsH,
                                       coverSize.width,
                                       coverSize.height);
        CGFloat OffsetY = FMListPlaceholder.sharedInstance.coverCenterYOffset;
        if (self.coverCenterYOffset) {
            OffsetY = self.coverCenterYOffset;
        }
        _emptyCover.center = CGPointMake(self.center.x, self.center.y - _coverSpaceToTips/2 - kTipsH/2 + OffsetY );
        _emptyCover.userInteractionEnabled = YES;
        UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapAction)];
        [_emptyCover addGestureRecognizer:tap];
    }
    return _emptyCover;
}

- (UIButton *)emptyTips{
    if (!_emptyTips) {
        _emptyTips =[[UIButton alloc] init];
        [_emptyTips setTitle:_defaultEmptyTips forState:UIControlStateNormal];
        _emptyTips.titleLabel.textAlignment = NSTextAlignmentCenter;
        _emptyTips.titleLabel.font = [UIFont systemFontOfSize:kFit6(16)];
        CGFloat coverSpaceToTips = FMListPlaceholder.sharedInstance.coverSpaceToTips;
        if (coverSpaceToTips) {
            _coverSpaceToTips = coverSpaceToTips;
        }
        _emptyTips.frame = CGRectMake(0,
                                      CGRectGetMaxY(self.emptyCover.frame) + _coverSpaceToTips,
                                      self.frame.size.width,
                                      kTipsH);
        _emptyTips.center = CGPointMake(self.center.x, _emptyTips.center.y);
        [_emptyTips addTarget:self action:@selector(tapAction) forControlEvents:UIControlEventTouchUpInside];
        if (FMListPlaceholder.sharedInstance.defaultTipsTextColor) {
            [_emptyTips setTitleColor:FMListPlaceholder.sharedInstance.defaultTipsTextColor forState:UIControlStateNormal];
        }else{
            [_emptyTips setTitleColor:UIColor.lightGrayColor forState:UIControlStateNormal];
        }
        
        if (FMListPlaceholder.sharedInstance.defaultTipsFont) {
            [_emptyTips.titleLabel setFont:FMListPlaceholder.sharedInstance.defaultTipsFont];
        }
    }
    return _emptyTips;
}

- (void)tapAction {
    if (self.reloadClickBlock) {
        self.reloadClickBlock();
        
        [UIView animateWithDuration:1.0 animations:^{
                self.emptyCover.alpha = 0.5;
                self.emptyTips.alpha = 0.5;
                FMListPlaceholder.sharedInstance.defaultPlaceholder.alpha = 0.5;
            [UIView animateWithDuration:0.5 animations:^{
                self.emptyCover.alpha = 1.0;
                self.emptyTips.alpha = 1.0;
                FMListPlaceholder.sharedInstance.defaultPlaceholder.alpha = 1.0;
            }];
        }];
    }
}

- (void)createUI {
    if (FMListPlaceholder.sharedInstance.defaultPlaceholder != nil) {
        [self addSubview:FMListPlaceholder.sharedInstance.defaultPlaceholder];
        FMListPlaceholder.sharedInstance.defaultPlaceholder.center = self.center;
        FMListPlaceholder.sharedInstance.defaultPlaceholder.userInteractionEnabled = YES;
        
        UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapAction)];
        [FMListPlaceholder.sharedInstance.defaultPlaceholder addGestureRecognizer:tap];
        
    } else {
        [self addSubview:self.emptyCover];
        [self addSubview:self.emptyTips];
    }
}

@end