kmpdfkit_demo/PDFViewer/Controller/CPDFTextViewController.m

//
//  CPDFTextViewController.m
//  PDFViewer
//
//  Created by kdan on 2022/11/19.
//

#import "CPDFTextViewController.h"
#import "CPDFTextView.h"
#import "CPDFTextPreview.h"
#import "CPDFDataModel.h"
#import "Masonry.h"

@interface CPDFTextViewController ()

@end

@implementation CPDFTextViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    
    _textPreview = [[CPDFTextPreview alloc] init];
    _textView = [[CPDFTextView alloc] init];
    _dataModel = [[CPDFDataModel alloc] init];
    
    [self.view addSubview:_textPreview];
    [self.view addSubview:_textView];
    
    UIEdgeInsets previewPadding = UIEdgeInsetsMake(0, 0, self.view.bounds.size.height / 3, 0);
    [_textPreview mas_makeConstraints:^(MASConstraintMaker *make) {
        make.edges.equalTo(self.view).with.insets(previewPadding);
    }];

    UIEdgeInsets textViewPadding = UIEdgeInsetsMake(430, 0, 0, 0);
    [_textView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.edges.equalTo(self.view).with.insets(textViewPadding);
    }];
    [self addTargets];
}

- (void)addTargets {
    
    for (NSInteger i = 0; i < _textView.colorArray.count; ++i) {
        [_textView.colorArray[i] addTarget:self action:@selector(onColorBtnClicked:) forControlEvents:UIControlEventTouchDown];
    }
    
    [_textView.opacitySlider addTarget:self action:@selector(onOpacityChanged:) forControlEvents:UIControlEventValueChanged];
    [_textView.textScaleSlider addTarget:self action:@selector(onTextScaleChanged:) forControlEvents:UIControlEventValueChanged];
    [_textView.tileSwitch addTarget:self action:@selector(onTileSwitchChanged:) forControlEvents:UIControlEventValueChanged];
}

- (void)onColorBtnClicked:(UIButton *)sender {
    _textPreview.watermarkLabel.textColor = sender.backgroundColor;
    [_dataModel setTextColor:sender.backgroundColor];
}

- (void)onOpacityChanged:(UISlider *)sender {
    _textPreview.watermarkLabel.alpha =  1 - sender.value;
    [_dataModel setWatermarkOpacity:1 - sender.value];
}

- (void)onTextScaleChanged:(UISlider *)sender {
    sender.minimumValue = 24;
    sender.maximumValue = 70;
    _textPreview.watermarkLabel.font = [_textPreview.watermarkLabel.font fontWithSize:sender.value];
    [_textPreview.watermarkLabel sizeToFit];
    CGRect frame = _textPreview.watermarkLabel.frame;
    frame.origin = CGPointMake(_textPreview.bounds.size.width / 2 - _textPreview.watermarkLabel.frame.size.width / 2, _textPreview.bounds.size.height / 2 - _textPreview.watermarkLabel.frame.size.height / 2);
    _textPreview.watermarkLabel.frame = frame;
    
    _textPreview.rotationBtn.frame = CGRectMake(_textPreview.bounds.size.width / 2 + _textPreview.watermarkLabel.frame.size.width / 2 - 10, _textPreview.bounds.size.height / 2 + _textPreview.watermarkLabel.frame.size.height / 2 - 10, 20, 20);
    [_dataModel setWatermarkScale:sender.value / 24];
}

- (void)onTileSwitchChanged:(UISwitch *) sender {
    if ([sender isOn]) {
        _dataModel.isTile = YES;
    } else {
        _dataModel.isTile = NO;
    }
}

@end