kmpdfkit_demo/PDFViewer/Source/PDFKeyboardToolbar/PDFKeyboardToolbar.m

//
//  PDFKeyboardToolbar.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 "PDFKeyboardToolbar.h"
#import "PDFKTColorPickView.h"
#import "PDFKTSlideView.h"
#import "PDFKTFontNamePopBgView.h"

@interface PDFKeyboardToolbar () <UIPopoverPresentationControllerDelegate>

@property (nonatomic,retain) UIView *toolbarView;
@property (nonatomic,retain) CALayer *topBorder;
@property (nonatomic,retain) NSArray *buttonsToAdd;
@property (nonatomic,retain) PDFKTColorPickView *colorPickView;
@property (nonatomic,retain) PDFKTFontNameView *fontNameView;
@property (nonatomic,retain) PDFSettingFontView *setFontSizeView;
@property (nonatomic,retain) PDFSettingFontView *opacticyView;
@property (nonatomic,assign) CGFloat centerY;
@property (nonatomic,retain) UIButton *fontButton;
@property (nonatomic,retain) UIButton *sizeButton;
@property (nonatomic,retain) UIButton *opacityButton;
@property (nonatomic,retain) UIButton *boldButton;
@property (nonatomic,retain) UIButton *italicButton;
@property (nonatomic, retain) UILabel *fontLabel;
@property (nonatomic, retain) UILabel *sizeLabel;
@property (nonatomic, retain) UILabel *opacityLabel;
@property (nonatomic, retain) UIImageView *colorPick;
@property (nonatomic,assign) BOOL isBold;
@property (nonatomic,assign) BOOL isItalic;
@property (nonatomic, retain) UIScrollView *scrollView;
@property (nonatomic, retain) UIButton *doneButton;
@end

@implementation PDFKeyboardToolbar
@synthesize fontName = _fontName;
@synthesize fontSize = _fontSize;
@synthesize delegate = _delegate;
@synthesize opacity = _opacity;

- (id)initWithFontName:(NSString *)fontName fontSize:(CGFloat)fontSize{
    self = [super initWithFrame:CGRectMake(0, 0, [[UIScreen mainScreen] bounds].size.width, 40)];
    if (self) {
        _buttonsToAdd = nil;
        _fontName = [fontName copy];
        _fontSize = fontSize;
        self.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight;
        self.backgroundColor = [UIColor colorWithRed:224.0/255.0 green:224.0/255.0 blue:224.0/255.0 alpha:1.0];
        _centerY = self.center.y;
        [self initButtonsToAdd];
        _scrollView = [[UIScrollView alloc] initWithFrame:self.bounds];
        self.scrollView.clipsToBounds = NO;
        [self addSubview:self.scrollView];
        for (UIView *eachButton in _buttonsToAdd) {
            [self.scrollView addSubview:eachButton];
        }
    }
    return self;
}

- (id)initWithViews:(NSArray*)buttons {
    self = [super initWithFrame:CGRectMake(0, 0, self.window.rootViewController.view.bounds.size.width, 40)];
    if (self) {
        self.buttonsToAdd = buttons;
        self.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight;
        [self addSubview:[self inputAccessoryView]];
    }
    return self;
}
- (void)dealloc{
    [_doneButton release];
    _delegate = nil;
    [_fontName release];
    [_buttonsToAdd release];
    [_toolbarView release];
    _scrollView.delegate = nil;
    [_scrollView release];
    [_fontNameView release];
    [_colorPickView release];
    [_colorPick release];
    
    [_sizeButton release];
    [_setFontSizeView release];
    [_opacityButton release];
    [_opacticyView release];
    [super dealloc];
}
- (void)bindToTextView:(UITextView *)textView
{
    [textView setInputAccessoryView:self];
}

- (void)bindToTextField:(UITextField *)textField
{
    [textField setInputAccessoryView:self];
}
- (void)refreshFontName:(NSString *)fontName fontSize:(CGFloat)fontSize opacity:(CGFloat)opacity
{
    self.fontName = fontName;
    _fontSize = fontSize;
    _opacity = opacity * 100.0;
    [self analyzeFont:_fontName];
    if (_fontButton)
        [_fontButton setTitle:_fontName forState:UIControlStateNormal];
    if (_opacityButton)
        [_opacityButton setTitle:[NSString stringWithFormat:@"%.0f",_opacity] forState:UIControlStateNormal];
     if (_sizeButton)
        [_sizeButton setTitle:[NSString stringWithFormat:@"%.0f",_fontSize] forState:UIControlStateNormal];
    _boldButton.selected = _isBold;
    _italicButton.selected = _isItalic;
}
- (void)layoutSubviews {
    CGRect frame = _toolbarView.bounds;
    frame.size.height = 0.5f;
    _topBorder.frame = frame;
    
    [self.sizeLabel sizeToFit];
    [self.opacityLabel sizeToFit];
    
    CGFloat space = 5;
    if (self.bounds.size.width > 768) {
        space = 20;
    }
    CGFloat posX = space;
    _boldButton.center = CGPointMake(posX+_boldButton.frame.size.width/2.0, _centerY);
    posX += _boldButton.frame.size.width+space;
    _italicButton.center = CGPointMake(posX+_italicButton.frame.size.width/2.0, _centerY);
    posX += _italicButton.frame.size.width+space;
    _fontButton.center = CGPointMake(posX+_fontButton.frame.size.width/2.0, _centerY);
    posX += _fontButton.frame.size.width+space;
    self.sizeLabel.center = CGPointMake(posX+self.sizeLabel.frame.size.width/2.0, _centerY);
    posX += self.sizeLabel.frame.size.width+5;
    self.sizeButton.center = CGPointMake(posX+self.sizeButton.frame.size.width/2.0, _centerY);
    posX += self.sizeButton.frame.size.width+space;
    self.opacityLabel.center = CGPointMake(posX+self.opacityLabel.frame.size.width/2.0, _centerY);
    posX += self.opacityLabel.frame.size.width+5;
    self.opacityButton.center = CGPointMake(posX+self.opacityButton.frame.size.width/2.0, _centerY);

    posX += self.opacityButton.frame.size.width;
    
    CGFloat width = self.colorPick.frame.size.width+self.doneButton.frame.size.width+3*space+16;
    if (posX+width < self.bounds.size.width) {
        posX += (self.bounds.size.width-width-posX+space);
    } else {
        posX += space;
    }
    
    self.colorPick.center = CGPointMake(posX+self.colorPick.frame.size.width/2.0, _centerY);
    _colorPickView.frame = self.colorPick.frame;
    posX += self.colorPick.frame.size.width+space+8;
    self.doneButton.center = CGPointMake(posX+self.doneButton.frame.size.width/2.0, _centerY);
    posX += self.doneButton.frame.size.width+space;
    
    self.scrollView.frame = self.bounds;
    self.scrollView.contentSize = CGSizeMake(posX, self.frame.size.height);
}
- (void)initButtonsToAdd{
    CGFloat boundsWidth = self.bounds.size.width;
    
    _boldButton = [UIButton buttonWithType:UIButtonTypeCustom];
    UIImage *boldImage = [UIImage imageNamed:@"TImageNameBoldLetter"];
    [_boldButton setImage:boldImage forState:UIControlStateNormal];
    _boldButton.bounds = CGRectMake(0, 0, boldImage.size.width, boldImage.size.height);
    _boldButton.center = CGPointMake(boundsWidth * 0.03 *0.85, _centerY);
//    _boldButton.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin;
    [_boldButton addTarget:self action:@selector(boldSelected:) forControlEvents:UIControlEventTouchUpInside];
    [_boldButton setImage:[UIImage imageNamed:@"TImageNameSelectBoldLetter"] forState:UIControlStateSelected];
    
    _italicButton = [UIButton buttonWithType:UIButtonTypeCustom];
    UIImage *italicImage = [UIImage imageNamed:@"TImageNameLeanIcon"];
    [_italicButton setImage:italicImage forState:UIControlStateNormal];
    _italicButton.bounds = CGRectMake(0, 0, italicImage.size.width, italicImage.size.height);
    _italicButton.center = CGPointMake(boundsWidth * 0.1*0.85, _centerY);
//    _italicButton.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin |UIViewAutoresizingFlexibleRightMargin;
    [_italicButton addTarget:self action:@selector(italicSelected:) forControlEvents:UIControlEventTouchUpInside];
    [_italicButton setImage:[UIImage imageNamed:@"TImageNameSelectLeanIcon"] forState:UIControlStateSelected];
    
    UILabel *fontLabel = [[UILabel alloc] initWithFrame:CGRectMake(110, 5, 50, 18)];
    self.fontLabel = fontLabel;
    fontLabel.text = NSLocalizedString(@"Fonts", nil);
    fontLabel.font = [UIFont systemFontOfSize:18];
    fontLabel.center = CGPointMake(boundsWidth * 0.18*0.85, _centerY);
    fontLabel.backgroundColor = [UIColor clearColor];
//    fontLabel.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin |UIViewAutoresizingFlexibleRightMargin;
    
    _fontButton = [UIButton buttonWithType:UIButtonTypeCustom];
    _fontButton.backgroundColor = [UIColor colorWithRed:142/255.0 green:142.0/255.0 blue:142/255.0 alpha:1.0];
    _fontButton.layer.cornerRadius = 5.0;
    [_fontButton setTitle:_fontName forState:UIControlStateNormal];
    [_fontButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
    _fontButton.bounds = CGRectMake(0, 0, 129,34.0);
    _fontButton.center = CGPointMake(boundsWidth * 0.31*0.85, _centerY);
//    _fontButton.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin |UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleWidth;
    [_fontButton addTarget:self action:@selector(fontBtnClicked:) forControlEvents:UIControlEventTouchUpInside];
    
    UILabel *sizeLabel = [[UILabel alloc] initWithFrame:CGRectMake(300, 5, 50, 20)];
    self.sizeLabel = sizeLabel;
    sizeLabel.text = NSLocalizedString(@"Size", nil);
    sizeLabel.font = [UIFont systemFontOfSize:18];
    sizeLabel.backgroundColor = [UIColor clearColor];
    sizeLabel.center = CGPointMake(boundsWidth *0.45*0.85, _centerY);
//    sizeLabel.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin |UIViewAutoresizingFlexibleRightMargin ;
    
    self.sizeButton = [UIButton buttonWithType:UIButtonTypeCustom];
    _sizeButton.backgroundColor = [UIColor colorWithRed:142/255.0 green:142.0/255.0 blue:142/255.0 alpha:1.0];
    _sizeButton.layer.cornerRadius = 5.0;
    [_sizeButton setTitle:[NSString stringWithFormat:@"%.0f",_fontSize] forState:UIControlStateNormal];
    [_sizeButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
    _sizeButton.bounds = CGRectMake(0, 0, 51,34.0);
    _sizeButton.center = CGPointMake(boundsWidth * 0.52*0.85, _centerY);
    [_sizeButton addTarget:self action:@selector(fontSizeBtnClicked:) forControlEvents:UIControlEventTouchUpInside];
    
    UILabel *opacityLabel = [[UILabel alloc] initWithFrame:CGRectMake(300, 5, 75, 40)];
    self.opacityLabel = opacityLabel;
    opacityLabel.text = NSLocalizedString(@"Opacity", nil);
    opacityLabel.font = [UIFont systemFontOfSize:18];
    opacityLabel.backgroundColor = [UIColor clearColor];
    //    [opacityLabel sizeToFit];
    opacityLabel.center = CGPointMake(boundsWidth *0.62*0.85, _centerY);
//    opacityLabel.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin |UIViewAutoresizingFlexibleRightMargin ;
    
    self.opacityButton = [UIButton buttonWithType:UIButtonTypeCustom];
    _opacityButton.backgroundColor = [UIColor colorWithRed:142/255.0 green:142.0/255.0 blue:142/255.0 alpha:1.0];
    _opacityButton.layer.cornerRadius = 5.0;
    [_opacityButton setTitle:[NSString stringWithFormat:@"%.0f",_opacity] forState:UIControlStateNormal];
    [_opacityButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
    _opacityButton.bounds = CGRectMake(0, 0, 51,34.0);
    _opacityButton.center = CGPointMake(boundsWidth * 0.725*0.85, _centerY);
    [_opacityButton addTarget:self action:@selector(opacityBtnClicked:) forControlEvents:UIControlEventTouchUpInside];
    
    UIImage *colorPickImg = [UIImage imageNamed:@"text_color_bar.png"];
    UIImageView *colorPick = [[UIImageView alloc] initWithImage:colorPickImg];
    self.colorPick = colorPick;
    colorPick.frame = CGRectMake(0, 0, colorPickImg.size.width, colorPickImg.size.height);
    colorPick.center = CGPointMake(boundsWidth * 0.82, _centerY);
//    colorPick.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin |UIViewAutoresizingFlexibleRightMargin;
    _colorPickView = [[PDFKTColorPickView alloc] initWithFrame:colorPick.frame];
    _colorPickView.colorPickDelegate = self;
//    _colorPickView.autoresizingMask  = UIViewAutoresizingFlexibleLeftMargin |UIViewAutoresizingFlexibleRightMargin;
    
    self.doneButton = [UIButton buttonWithType:UIButtonTypeCustom];
    [self.doneButton setTitle:NSLocalizedString(@"Done", nil) forState:UIButtonTypeCustom];
    [self.doneButton setTitleColor:[UIColor colorWithRed:0 green:122.0/255.0 blue:1.0 alpha:1.0] forState:UIControlStateNormal];
    [self.doneButton setTitleColor:[UIColor lightGrayColor] forState:UIControlStateHighlighted];
    [self.doneButton sizeToFit];
    [self.doneButton addTarget:self action:@selector(doneSelected:) forControlEvents:UIControlEventTouchUpInside];
    
    _buttonsToAdd = [[NSArray alloc]initWithObjects:_boldButton,_italicButton,_fontButton,sizeLabel,_sizeButton,opacityLabel,_opacityButton,colorPick,_colorPickView,self.doneButton, nil];
    [fontLabel release];
    [sizeLabel release];
    [opacityLabel release];
    [colorPick release];
}
- (UIView*)inputAccessoryView {
    _toolbarView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.bounds.size.width, 40)];
    _toolbarView.backgroundColor = [UIColor colorWithWhite:0.973 alpha:1.0];
    _toolbarView.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight;
    
    _topBorder = [CALayer layer];
    _topBorder.frame = CGRectMake(0.0f, 0.0f, self.bounds.size.width, 0.5f);
    _topBorder.backgroundColor = [UIColor colorWithWhite:0.678 alpha:1.0].CGColor;
    
    [_toolbarView.layer addSublayer:_topBorder];
    [_toolbarView addSubview:[self fakeToolbar]];
    
    return [_toolbarView autorelease];
}

- (UIScrollView*)fakeToolbar {
    _scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, self.bounds.size.width, 40)];
    _scrollView.backgroundColor = [UIColor clearColor];
    _scrollView.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight;
    _scrollView.showsHorizontalScrollIndicator = NO;
    
    NSUInteger originX = 0;
    if (!_buttonsToAdd)
        [self initButtonsToAdd];//采用init方式初始化
    for (UIView *eachButton in _buttonsToAdd) {
        [_scrollView addSubview:eachButton];
        originX = originX + eachButton.bounds.size.width;
    }
    
    CGSize contentSize = _scrollView.contentSize;
    contentSize.width = originX;
    _scrollView.contentSize = contentSize;
    
    return [_scrollView autorelease];
}


- (void)fontBtnClicked:(id)sender
{
    UIButton *btn = (UIButton *)sender;
    btn.selected = !btn.selected;
    
    if (!_fontNameView) {
        _fontNameView = [[PDFKTFontNameView alloc] initWithFrame:CGRectMake(0, 0, 160, 145)];
        _fontNameView.fontNamedelegate = self;
        _fontNameView.fontName = self.fontName;
        _fontNameView.center = CGPointMake(btn.center.x, _fontNameView.center.y);
        _fontNameView.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin|UIViewAutoresizingFlexibleRightMargin|UIViewAutoresizingFlexibleTopMargin|UIViewAutoresizingFlexibleBottomMargin;
    }
    
    UIViewController *vc = [[UIViewController alloc] init];
    vc.view.backgroundColor = [UIColor clearColor];
    [vc.view addSubview:_fontNameView];
    vc.preferredContentSize = CGSizeMake(160, 145);
    vc.modalPresentationStyle = UIModalPresentationPopover;
    UIPopoverPresentationController *sortPopVC = vc.popoverPresentationController;
    sortPopVC.delegate = self;
    sortPopVC.sourceRect = btn.bounds;
    sortPopVC.sourceView = btn;
    sortPopVC.permittedArrowDirections = UIPopoverArrowDirectionDown;
    [[UIApplication sharedApplication].keyWindow.rootViewController presentViewController:vc animated:YES completion:nil];
}

- (void)fontSizeBtnClicked:(id)sender
{
    UIButton *btn = (UIButton *)sender;
    btn.selected = !btn.selected;

    if (!_setFontSizeView) {
        _setFontSizeView = [[PDFSettingFontView alloc] initWithFrame:CGRectMake(0, 0, 145, 300)  minValue:2 maxValue:100];
        _setFontSizeView.fontNamedelegate = self;
        _setFontSizeView.curValue = self.fontSize;
        _setFontSizeView.center = CGPointMake(btn.center.x, _setFontSizeView.center.y);
        _setFontSizeView.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin|UIViewAutoresizingFlexibleRightMargin|UIViewAutoresizingFlexibleTopMargin|UIViewAutoresizingFlexibleBottomMargin;
    }
    UIViewController *vc = [[UIViewController alloc] init];
    [vc.view addSubview:_setFontSizeView];
    
    vc.view.backgroundColor = [UIColor clearColor];
    vc.preferredContentSize = CGSizeMake(145, 300);
    vc.modalPresentationStyle = UIModalPresentationPopover;
    UIPopoverPresentationController *sortPopVC = vc.popoverPresentationController;
    sortPopVC.delegate = self;
    sortPopVC.sourceRect = btn.bounds;
    sortPopVC.sourceView = btn;
    sortPopVC.permittedArrowDirections = UIPopoverArrowDirectionDown;
    [[UIApplication sharedApplication].keyWindow.rootViewController presentViewController:vc animated:YES completion:nil];
}

- (void)opacityBtnClicked:(id)sender
{
    UIButton *btn = (UIButton *)sender;
    btn.selected = !btn.selected;
    
    if (!_opacticyView) {
        _opacticyView = [[PDFSettingFontView alloc] initWithFrame:CGRectMake(0, 0, 145, 300) minValue:25 maxValue:100];
        _opacticyView.fontNamedelegate = self;
        _opacticyView.center = CGPointMake(btn.center.x, _opacticyView.center.y);
        _opacticyView.curValue = self.opacity;
        _opacticyView.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin|UIViewAutoresizingFlexibleRightMargin|UIViewAutoresizingFlexibleTopMargin|UIViewAutoresizingFlexibleBottomMargin;
    }
    
    UIViewController *vc = [[UIViewController alloc] init];
    [vc.view addSubview:_opacticyView];
    
    vc.preferredContentSize = CGSizeMake(145, 300);
    vc.modalPresentationStyle = UIModalPresentationPopover;
    UIPopoverPresentationController *sortPopVC = vc.popoverPresentationController;
    sortPopVC.delegate = self;
    sortPopVC.sourceRect = btn.bounds;
    vc.view.backgroundColor = [UIColor clearColor];
    sortPopVC.sourceView = btn;
    sortPopVC.permittedArrowDirections = UIPopoverArrowDirectionDown;
    [[UIApplication sharedApplication].keyWindow.rootViewController presentViewController:vc animated:YES completion:nil];
}

- (void)boldSelected:(id)sender
{
    UIButton *btn = (UIButton *)sender;
    btn.selected = !btn.selected;
    _isBold = btn.selected;
    [self updateFontName:[self constructionFontname:_fontName isBold:_isBold isItalic:_isItalic]];
}
- (void)italicSelected:(id)sender
{
    UIButton *btn = (UIButton *)sender;
    btn.selected = !btn.selected;
    _isItalic = btn.selected;
    [self updateFontName:[self constructionFontname:_fontName isBold:_isBold isItalic:_isItalic]];
}
- (void)doneSelected:(id)sender
{
    if (_delegate && [_delegate respondsToSelector:@selector(keyboardShouldDissmiss:)]) {
        [_delegate keyboardShouldDissmiss:self];
    }
}

- (void)fontNamesView:(PDFSettingFontView *)fontNamesView didSelectedTextsize:(CGFloat)size
{
    if ([fontNamesView isEqual:self.setFontSizeView]) {
        
        if (_delegate && [_delegate respondsToSelector:@selector(keyboard:updateFontSize:)]){
            [_delegate keyboard:self updateFontSize:size];
            [_sizeButton setTitle:[NSString stringWithFormat:@"%.0f",size] forState:UIControlStateNormal];
        }
        
    } else if ([fontNamesView isEqual:self.opacticyView]){
        
        if (_delegate && [_delegate respondsToSelector:@selector(keyboard:updateOpacity:)]) {
            [_delegate keyboard:self updateOpacity:size / 100.0];
            [_opacityButton setTitle:[NSString stringWithFormat:@"%.0f",size] forState:UIControlStateNormal];
        }
    }
}

#pragma mark - ColorPickViewDelegate
- (void)colorPick:(PDFKTColorPickView *)view updateColor:(UIColor *)color
{
    if (_delegate && [_delegate respondsToSelector:@selector(keyboard:updateTextColor:)])
        [_delegate keyboard:self updateTextColor:color];
}
- (void)colorPickDidBegan:(PDFKTColorPickView *)view{
    self.scrollView.scrollEnabled = NO;
}
- (void)colorPickDidEnd:(PDFKTColorPickView *)view{
    self.scrollView.scrollEnabled = YES;
}
#pragma mark - FontNameViewDelegate
- (void)fontNamesView:(PDFKTFontNameView*)fontNamesView didSelectedTextFontName:(NSString *)fontName
{    
    [_fontButton setTitle:fontName forState:UIControlStateNormal];
    self.fontName = fontName;
    [self updateFontName:[self constructionFontname:_fontName isBold:_isBold isItalic:_isItalic]];
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *touch = [touches anyObject];
    CGPoint location = [touch locationInView:self];
    if (location.y < 800 - 44)
    {
        if ([_fontNameView superview])
        {
            [_fontNameView removeFromSuperview];
            _fontButton.selected = !_fontButton.selected;
        }
        if (_delegate && [_delegate respondsToSelector:@selector(keyboardShouldDissmiss:)])
            [_delegate keyboardShouldDissmiss:self];
    }
}

- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event
{
    UIView *hitView = [super hitTest:point withEvent:event];
    if (hitView == self)
    {
        return nil;
    }
    else
    {
        return hitView;
    }
}

- (void)analyzeFont:(NSString *)fontName
{
    _isBold = NO;
    _isItalic = NO;
    if ([fontName rangeOfString:@"Bold"].location != NSNotFound)
        _isBold = YES;
    if ([fontName rangeOfString:@"Oblique"].location != NSNotFound)
        _isItalic = YES;
    if ([fontName rangeOfString:@"Italic"].location != NSNotFound)
        _isItalic = YES;
    if ([fontName rangeOfString:@"Helvetica"].location != NSNotFound)
    {
        _fontName = @"Helvetica";
        return ;
    }
    if ([fontName rangeOfString:@"Courier"].location != NSNotFound)
    {
        _fontName = @"Courier";
        return ;
    }
    if ([fontName rangeOfString:@"Times"].location != NSNotFound)
    {
        _fontName = @"Times-Roman";
    }
}
- (NSString *)constructionFontname:(NSString *)baseName isBold:(BOOL)isBold isItalic:(BOOL)isItalic
{
    NSString *result;
    if ([baseName rangeOfString:@"Times"].location != NSNotFound)
    {
        if (isBold || isItalic)
        {
            if (isBold && isItalic) return @"Times-BoldItalic";
            if (isBold) return @"Times-Bold";
            if (isItalic) return @"Times-Italic";
        }
        else
            return @"Times-Roman";
    }
    if (isBold || isItalic)
    {
        result = [NSString stringWithFormat:@"%@-",baseName];
        if (isBold) result = [NSString stringWithFormat:@"%@Bold",result];
        if (isItalic) result = [NSString stringWithFormat:@"%@Oblique",result];
    }
    else return baseName;
    return result;
}
- (void)updateFontName:(NSString *)fontName
{
    if (_delegate && [_delegate respondsToSelector:@selector(keyboard:updateFontName:)])
        [_delegate keyboard:self updateFontName:fontName];
}

#pragma mark - UIPopoverPresentationControllerDelegate

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

@end