cdts/xdts-ios 3/TreeHole/Code/Base/PYNavigationViewController.m

//
//  EHNavigationViewController.m
//  ExpressHelper
//
//  Created by ko1o on 2019/3/7.
//  Copyright © 2019年 ko1o. All rights reserved.
//

#import "PYNavigationViewController.h"
#import "PYBaseViewController.h"
#import "UINavigationController+FDFullscreenPopGesture.h"

@interface PYNavigationViewController ()<UINavigationControllerDelegate>

@end

@implementation PYNavigationViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    [self.interactivePopGestureRecognizer addTarget:self action:@selector(handlePopGesture:)];
}

+ (void)initialize
{
    [self customizeInterface];
}

- (instancetype)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {
        self.fd_fullscreenPopGestureRecognizer.enabled = NO; //禁用全屏手势，引入FDFullscreen是优化导航栏隐藏时切换界面，系统的右滑动画体验不佳
        self.delegate = self;
    }
    return self;
}

- (void)viewWillLayoutSubviews {
    [super viewWillLayoutSubviews];
}

- (UIStatusBarStyle)preferredStatusBarStyle
{
    return self.topViewController.preferredStatusBarStyle;
}

- (UIModalPresentationStyle)modalPresentationStyle {
    return UIModalPresentationFullScreen;
}

#pragma mark - UINavigationControllerDelegate

- (void)updateTitleTextAttributesWithTopVC
{
    self.navigationBar.barStyle = self.topViewController.mt_barStyle;
    self.navigationBar.titleTextAttributes = self.topViewController.mt_titleTextAttributes;
}

- (void)updateNavigationBarForViewController:(UIViewController *)vc
{
    [vc mt_applyAppearanceToNavigationBar:self.navigationBar];
}

- (void)transitionNavigationBarStyleWithCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator viewController:(UIViewController * _Nonnull)viewController {
    UIViewController *from = [coordinator viewControllerForKey:UITransitionContextFromViewControllerKey];
    UIViewController *to = [coordinator viewControllerForKey:UITransitionContextToViewControllerKey];
    
    if (self == to) { // to == self
        [self updateNavigationBarForViewController:viewController];
    }
    
    [coordinator animateAlongsideTransition:^(id<UIViewControllerTransitionCoordinatorContext>  _Nonnull context) {
        [self updateNavigationBarForViewController:viewController];
    } completion:^(id<UIViewControllerTransitionCoordinatorContext>  _Nonnull context) {
        if (context.isCancelled) {
            [self updateNavigationBarForViewController:from];
        } else {
            [self updateNavigationBarForViewController:viewController];
        }
    }];
    
    if (@available(iOS 10.0, *)) {
        [coordinator notifyWhenInteractionChangesUsingBlock:^(id<UIViewControllerTransitionCoordinatorContext>  _Nonnull context) {
            ;
        }];
    } else {
        [coordinator notifyWhenInteractionEndsUsingBlock:^(id<UIViewControllerTransitionCoordinatorContext>  _Nonnull context) {
            ;
        }];
    }
}

- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated;
{
    //    NSLog(@"willShowViewController  %@", viewController);
    id<UIViewControllerTransitionCoordinator> coordinator = self.transitionCoordinator;
    if (coordinator) {
        [self transitionNavigationBarStyleWithCoordinator:coordinator viewController:viewController];
    } else {
        [self updateNavigationBarForViewController:viewController];
    }
}

- (void)navigationController:(UINavigationController *)navigationController didShowViewController:(UIViewController *)viewController animated:(BOOL)animated;
{
    //    NSLog(@"didShowViewController  %@", viewController);
    navigationController.interactivePopGestureRecognizer.enabled = NO;
    if (navigationController.viewControllers.count > 1 && !viewController.fd_interactivePopDisabled) {
        navigationController.interactivePopGestureRecognizer.delegate = (id<UIGestureRecognizerDelegate>)viewController;
        navigationController.interactivePopGestureRecognizer.enabled = YES;
    }
}

- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated
{
    if (self.childViewControllers.count == 1
        && viewController.hidesBottomBarWhenPushed == NO) {
        viewController.hidesBottomBarWhenPushed = YES;
    }
    
    [super pushViewController:viewController animated:animated];
}

- (void)setNavigationBarHidden:(BOOL)navigationBarHidden {
    
    [super setNavigationBarHidden:navigationBarHidden];
}

- (void)setNavigationBarHidden:(BOOL)hidden animated:(BOOL)animated
{
    [super setNavigationBarHidden:hidden animated:animated];
    self.viewControllers.lastObject.fd_prefersNavigationBarHidden = hidden;
}

- (void)setViewControllers:(NSArray<UIViewController *> *)viewControllers animated:(BOOL)animated {
    if (viewControllers.count > 1 && viewControllers.lastObject.hidesBottomBarWhenPushed == NO) {
        viewControllers.lastObject.hidesBottomBarWhenPushed = YES;
    }
    
    [super setViewControllers:viewControllers animated:animated];
}

- (UIViewController *)popViewControllerAnimated:(BOOL)animated {
    UIViewController *vc = [super popViewControllerAnimated:animated];
    [self updateTitleTextAttributesWithTopVC];
    return vc;
}

- (NSArray<UIViewController *> *)popToViewController:(UIViewController *)viewController animated:(BOOL)animated {
    NSArray *array = [super popToViewController:viewController animated:animated];
    [self updateTitleTextAttributesWithTopVC];
    
    return array;
}

- (NSArray<UIViewController *> *)popToRootViewControllerAnimated:(BOOL)animated {
    NSArray *array = [super popToRootViewControllerAnimated:animated];
    [self updateTitleTextAttributesWithTopVC];
    return array;
}

- (void)setViewControllers:(NSArray<__kindof UIViewController *> *)viewControllers
{
    if (viewControllers.count > 1 && viewControllers.lastObject.hidesBottomBarWhenPushed == NO) {
        viewControllers.lastObject.hidesBottomBarWhenPushed = YES;
    }
    
    [super setViewControllers:viewControllers];
}

+ (UIBarButtonItem *)barButtonItemWithTitle:(NSString *)title textColor:(UIColor *)textColor target:(id)target action:(SEL) action
{
    UIBarButtonItem * item = [[UIBarButtonItem alloc]initWithTitle:title style:UIBarButtonItemStylePlain target:target action:action];
    textColor = textColor ?:[UIColor blackColor];
    
    // 不必手动设置，导航栏的tintColor会适配
    //    [item setTitleTextAttributes:@{NSForegroundColorAttributeName : textColor}
    //                        forState:UIControlStateNormal];
    //    [item setTitleTextAttributes:@{NSForegroundColorAttributeName : [UIColor mt_colorWithColor:textColor alphaScale:0.5] }
    //                        forState:UIControlStateHighlighted];
    
    return item;
}

+ (UIBarButtonItem *)barButtonItemWithTitle:(NSString *)title target:(id)target action:(SEL) action
{
    UIBarButtonItem * item = [self barButtonItemWithTitle:title textColor:[UIColor blackColor] target:target action:action];
    return item;
}

+ (UIBarButtonItem *)barButtonItemWithImage:(UIImage *)image highlightedImage:(UIImage *)highlightedImage target:(id)target action:(SEL) action
{
    UIBarButtonItem * item = [[UIBarButtonItem alloc]initWithImage:image style:UIBarButtonItemStylePlain target:target action:action];
    
    return item;
}

+ (void)customizeInterface
{
    UINavigationBar *navigationBarAppearance = nil;
    if (@available(iOS 9, *)) {
        navigationBarAppearance = [UINavigationBar appearanceWhenContainedInInstancesOfClasses:@[[PYNavigationViewController class]]];
    } else {
        navigationBarAppearance = [UINavigationBar appearanceWhenContainedIn:[PYNavigationViewController class], nil];
    }
    UIImage *backgroundImage = ImageNamed(@"tabbar_backgound_image");
    navigationBarAppearance.translucent = NO;
    [navigationBarAppearance setBackgroundImage:backgroundImage forBarMetrics:UIBarMetricsDefault];
    
    //导航栏按钮风格
    // Color不必手动设置，导航栏的tintColor会适配
    //    UIColor * barButtonItemTitlecolor = [UIColor yellowColor];
    //    UIColor * barButtonItemTitlecolorHL = [UIColor mt_colorWithColor:barButtonItemTitlecolor alphaScale:0.5];
    //
    [[UIBarButtonItem appearance]setTitleTextAttributes:@{NSFontAttributeName : MT_FONT_MEDIUM_NO_SCALE_SIZE(20),
//                                                                                                                    NSForegroundColorAttributeName:barButtonItemTitlecolor,
                                                          }
                                               forState:UIControlStateNormal];
    [[UIBarButtonItem appearance]setTitleTextAttributes:@{NSFontAttributeName : MT_FONT_MEDIUM_NO_SCALE_SIZE(20),
                                                          //                                                          NSForegroundColorAttributeName:barButtonItemTitlecolorHL,
                                                          }
                                               forState:UIControlStateHighlighted];
    [[UIBarButtonItem appearance]setTitleTextAttributes:@{NSFontAttributeName : MT_FONT_MEDIUM_NO_SCALE_SIZE(20),
                                                          //                                                          NSForegroundColorAttributeName:barButtonItemTitlecolorHL,
                                                          }
                                               forState:UIControlStateDisabled];
    
//    UINavigationBar* navBar = [UINavigationBar appearance];
//    //设置导航栏字体
//    NSMutableDictionary* barDic = [NSMutableDictionary dictionary];
//    barDic[NSFontAttributeName] = [UIFont boldSystemFontOfSize:20];
//    barDic[NSForegroundColorAttributeName] = COLOR_WITH_RGB(0xFFFFFF);
//    [navBar setTitleTextAttributes:barDic];
//
}

UIColor* mt_blendColor(UIColor *from, UIColor *to, float percent) {
    CGFloat fromRed = 0;
    CGFloat fromGreen = 0;
    CGFloat fromBlue = 0;
    CGFloat fromAlpha = 0;
    [from getRed:&fromRed green:&fromGreen blue:&fromBlue alpha:&fromAlpha];
    
    CGFloat toRed = 0;
    CGFloat toGreen = 0;
    CGFloat toBlue = 0;
    CGFloat toAlpha = 0;
    [to getRed:&toRed green:&toGreen blue:&toBlue alpha:&toAlpha];
    
    CGFloat newRed =  fromRed + (toRed - fromRed) * fminf(1, percent * 4) ;
    CGFloat newGreen = fromGreen + (toGreen - fromGreen) * fminf(1, percent * 4);
    CGFloat newBlue = fromBlue + (toBlue - fromBlue) * fminf(1, percent * 4);
    CGFloat newAlpha = fromAlpha + (toAlpha - fromAlpha) * fminf(1, percent * 4);
    return [UIColor colorWithRed:newRed green:newGreen blue:newBlue alpha:newAlpha];
}

- (void)handlePopGesture:(UIScreenEdgePanGestureRecognizer *)recognizer {
    id<UIViewControllerTransitionCoordinator> coordinator = self.transitionCoordinator;
    PYBaseViewController *from = [coordinator viewControllerForKey:UITransitionContextFromViewControllerKey];
    PYBaseViewController *to = [coordinator viewControllerForKey:UITransitionContextToViewControllerKey];
    
    if ([from isKindOfClass:PYBaseViewController.class] && [to isKindOfClass:PYBaseViewController.class]) {
        if (recognizer.state == UIGestureRecognizerStateBegan || recognizer.state == UIGestureRecognizerStateChanged) {
            self.navigationBar.tintColor = mt_blendColor(from.mt_nav_tintColor, to.mt_nav_tintColor, coordinator.percentComplete);
        } else {
            if (coordinator.isCancelled) {
                self.navigationBar.tintColor = from.mt_nav_tintColor;
            }
        }
    }
}

@end