erpsuiteios/Redant Drivers/Apex And Drivers/RAProgressHUD.m

//
//  RAProgressHUD.m
//  Apex And Drivers
//
//  Created by Jack on 2018/6/5.
//  Copyright © 2018年 USAI. All rights reserved.
//

#import "RAProgressHUD.h"

static const CGFloat HUDSIZE = 100.0f;

@interface RAProgressHUD ()

@property (nonatomic,strong) CAGradientLayer *gradientLayer;
@property (nonatomic,strong) CAShapeLayer *progressLayer;

@property (nonatomic,strong) UIActivityIndicatorView *activityIndicator;
@property (nonatomic,strong) UILabel *indicatorLabel;

@end

@implementation RAProgressHUD

+ (instancetype)showHUDOnView:(UIView *)view {
    
    return [self showHUDOnView:view withTitle:@"loading..."];
}

+ (instancetype)showHUDOnView:(UIView *)view withTitle:(NSString *)title {
    
    if (!view) {
        return nil;
    }
    
    RAProgressHUD *hud = [[RAProgressHUD alloc] init];
    hud.backgroundColor = [UIColor colorWithRed:0.2 green:0.2 blue:0.2 alpha:0.8];
    hud.layer.cornerRadius = 5.0f;
    hud.layer.masksToBounds = YES;
    [view addSubview:hud];
    
    hud.translatesAutoresizingMaskIntoConstraints = NO;
    
    NSLayoutConstraint *h_center = [NSLayoutConstraint constraintWithItem:hud
                                                                attribute:NSLayoutAttributeCenterX
                                                                relatedBy:NSLayoutRelationEqual
                                                                   toItem:view
                                                                attribute:NSLayoutAttributeCenterX
                                                               multiplier:1
                                                                 constant:0];
    
    NSLayoutConstraint *v_center = [NSLayoutConstraint constraintWithItem:hud
                                                                attribute:NSLayoutAttributeCenterY
                                                                relatedBy:NSLayoutRelationEqual
                                                                   toItem:view
                                                                attribute:NSLayoutAttributeCenterY
                                                               multiplier:1
                                                                 constant:0];
    NSLayoutConstraint *width = [NSLayoutConstraint constraintWithItem:hud
                                                             attribute:NSLayoutAttributeWidth
                                                             relatedBy:NSLayoutRelationEqual
                                                                toItem:nil
                                                             attribute:NSLayoutAttributeNotAnAttribute
                                                            multiplier:0
                                                              constant:HUDSIZE];
    NSLayoutConstraint *height = [NSLayoutConstraint constraintWithItem:hud
                                                              attribute:NSLayoutAttributeHeight
                                                              relatedBy:NSLayoutRelationEqual
                                                                 toItem:nil
                                                              attribute:NSLayoutAttributeNotAnAttribute
                                                             multiplier:0
                                                               constant:HUDSIZE];
    [view addConstraints:@[h_center,v_center,width,height]];
    
    hud.title = title;
    
    hud.indicatorLabel.frame = CGRectMake(0, 70, HUDSIZE, 20);
    [hud addSubview:hud.indicatorLabel];
    
    hud.activityIndicator.frame = CGRectMake(20, 5, 60, 60);
    [hud addSubview:hud.activityIndicator];
    
    return hud;
}

- (UIActivityIndicatorView *)activityIndicator {
    if (!_activityIndicator) {
        _activityIndicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
        [_activityIndicator startAnimating];
    }
    return _activityIndicator;
}

- (UILabel *)indicatorLabel {
    if (!_indicatorLabel) {
        _indicatorLabel = [[UILabel alloc] init];
        _indicatorLabel.textColor = [UIColor whiteColor];
        _indicatorLabel.textAlignment = NSTextAlignmentCenter;
        _indicatorLabel.font = [UIFont systemFontOfSize:14.0f];
    }
    return _indicatorLabel;
}

- (void)dismiss {
    [self dismiss:nil];
}

- (void)dismiss:(void(^)(void))completion {
    
    [UIView animateWithDuration:0.25 animations:^{
        self.alpha = 0.3;
    } completion:^(BOOL finished) {
        [self removeFromSuperview];
        if (completion) {
            completion();
        }
    }];
}

- (void)setTitle:(NSString *)title {
    _title = title;
    self.indicatorLabel.text = title;
}

@end