kmpdfkit_demo/PDFViewer/Source/PDFViewerMode/PDFViewerModeViewController.m

//
//  PDFViewerModeViewController.m
//  PDFReader
//
//  Copyright © 2014-2022 PDF Technologies, Inc. All Rights Reserved.
//
//  The PDF Reader Sample applications are licensed with a modified BSD license.
//  Please see License for details. This notice may not be removed from this file.
//

#import "PDFViewerModeViewController.h"
#import "PDFSettingsColorViewController.h"
#import <ComPDFKit/ComPDFKit.h>

@interface PDFViewerModeViewController () <UIPopoverPresentationControllerDelegate>

@property (nonatomic,assign) IBOutlet UIScrollView *scrollView;

@property (nonatomic,assign) IBOutlet UISlider *slider;

@property (nonatomic,assign) IBOutlet UISegmentedControl *segmentedControl;

@property (nonatomic,assign) IBOutlet UISwitch *switchButton;

@end

@implementation PDFViewerModeViewController

#pragma mark - Init Methods

- (void)dealloc {
    Block_release(_callback);
    [_color release];
    [super dealloc];
}

#pragma mark - UIViewController Methods

- (void)viewDidLoad {
    [super viewDidLoad];
    
    // Do any additional setup after loading the view from its nib.
    self.preferredContentSize = CGSizeMake(320, 270);
    
    NSArray *colors = @[[UIColor whiteColor],
                        [UIColor blackColor],
                        [UIColor colorWithRed:255/255.0 green:239/255.0 blue:190/255.0 alpha:1.0],
                        [UIColor colorWithRed:153.0/255.0 green:207.0/255.0 blue:161.0/255.0 alpha:1.0],
                        [UIColor clearColor]];
    
    for (NSInteger i = 0; i < [colors count]; i++) {
        UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
        [button addTarget:self action:@selector(buttonItemClicked_Color:) forControlEvents:UIControlEventTouchUpInside];
        button.tag = i;
        button.frame = CGRectMake(15+i*60, 5, 50.0, 50.0);
        button.layer.masksToBounds = YES;
        button.layer.cornerRadius = button.frame.size.width * 0.5;
        button.layer.borderWidth = 2.0;
        button.layer.borderColor = ((UIColor *)colors[i]).CGColor;
        button.showsTouchWhenHighlighted = YES;
        [button setBackgroundColor:colors[i]];
        if (i == self.themesType) {
            button.layer.borderColor =  [UIColor colorWithRed:73.0/255.0 green:106.0/255.0 blue:239.0/255.0 alpha:1.0].CGColor;
        }
        if (i == [colors count]-1) {
            [button setBackgroundImage:[UIImage imageNamed:@"view_color_wheel_img.png"] forState:UIControlStateNormal];
        }
        [self.scrollView addSubview:button];
    }
    
    self.slider.value = self.brightness;
    self.segmentedControl.selectedSegmentIndex = self.scrollType;
    self.switchButton.on = self.isCropMode;
}

#pragma mark - Button Action

- (void)buttonItemClicked_Color:(UIButton *)button {
    if (![[CPDFKit sharedInstance] allowsFeature:CPDFKitFeatureViewerRender]) {
        UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:NSLocalizedString(@"OK", nil)
                                                               style:UIAlertActionStyleCancel
                                                             handler:nil];
        UIAlertController *alert = [UIAlertController alertControllerWithTitle:nil
                                                                       message:NSLocalizedString(@"Your license does not support this feature, please upgrade your license privilege.", nil)
                                                                preferredStyle:UIAlertControllerStyleAlert];
        [alert addAction:cancelAction];
        [self presentViewController:alert animated:YES completion:nil];
        return;
    }
    
    if (button.tag == 4) {
        CGRect rect = [self.view convertRect:button.frame fromView:button.superview];
        __block PDFSettingsColorViewController *vc = [[PDFSettingsColorViewController alloc] init];
        [vc setColor:self.color];
        vc.callback = ^{
            self.color = vc.color;
            
            for (UIButton *button in self.scrollView.subviews) {
                if ([button isKindOfClass:[UIButton class]]) {
                    button.layer.borderColor = button.backgroundColor.CGColor;
                }
            }
            button.layer.borderColor =  [UIColor colorWithRed:73.0/255.0 green:106.0/255.0 blue:239.0/255.0 alpha:1.0].CGColor;
            
            self.themesType = button.tag;
            if (self.callback) {
                self.callback(0);
            }
        };
        [vc showViewController:self inRect:rect];
        [vc release];
    } else {
        for (UIButton *button in self.scrollView.subviews) {
            if ([button isKindOfClass:[UIButton class]]) {
                button.layer.borderColor = button.backgroundColor.CGColor;
            }
        }
        button.layer.borderColor =  [UIColor colorWithRed:73.0/255.0 green:106.0/255.0 blue:239.0/255.0 alpha:1.0].CGColor;
        
        self.themesType = button.tag;
        if (self.callback) {
            self.callback(0);
        }
    }
}

- (IBAction)sliderValueChanged_Brightness:(id)sender {
    self.brightness = self.slider.value;
    if (self.callback) {
        self.callback(1);
    }
}

- (IBAction)segmentedControlValueChanged_Mode:(id)sender {
    self.scrollType = self.segmentedControl.selectedSegmentIndex;
    if (self.callback) {
        self.callback(2);
    }
}

- (IBAction)switchValueChanged_CropMode:(id)sender {
    self.isCropMode = self.switchButton.isOn;
    if (self.callback) {
        self.callback(3);
    }
}

#pragma mark - Public Methods

- (void)showViewController:(UIViewController *)viewController inBarButtonItem:(UIBarButtonItem *)barButtonItem {
    self.modalPresentationStyle = UIModalPresentationPopover;
    UIPopoverPresentationController *popVC = self.popoverPresentationController;
    popVC.delegate = self;
    popVC.barButtonItem = barButtonItem;
    popVC.permittedArrowDirections = UIPopoverArrowDirectionUp;
    [viewController presentViewController:self animated:YES completion:nil];
}

- (void)showViewController:(UIViewController *)viewController inRect:(CGRect)rect {
    self.modalPresentationStyle = UIModalPresentationPopover;
    UIPopoverPresentationController *popVC = self.popoverPresentationController;
    popVC.delegate = self;
    popVC.sourceRect = rect;
    popVC.sourceView = viewController.view;
    [viewController presentViewController:self animated:YES completion:nil];
}

#pragma mark - UIPopoverPresentationControllerDelegate

- (UIModalPresentationStyle)adaptivePresentationStyleForPresentationController:(UIPresentationController *)controller traitCollection:(UITraitCollection *)traitCollection {
    return UIModalPresentationNone;
}

@end