//
//  KBKeyPreviewView.m
//  CustomKeyboard
//

#import "KBKeyPreviewView.h"
#import "KBKey.h"

@interface KBKeyPreviewView ()
@property (nonatomic, strong) UILabel *label;
@property (nonatomic, strong) UIImageView *iconView;
@end

@implementation KBKeyPreviewView

- (instancetype)initWithFrame:(CGRect)frame {
    if (self = [super initWithFrame:frame]) {
        self.backgroundColor = [UIColor colorWithWhite:1 alpha:1.0];
        self.layer.cornerRadius = 8.0;
        self.layer.masksToBounds = YES;
        self.layer.borderWidth = 0.5;
        self.layer.borderColor = [UIColor colorWithWhite:0 alpha:0.15].CGColor;
        self.layer.shadowColor = [UIColor colorWithWhite:0 alpha:0.3].CGColor;
        self.layer.shadowOpacity = 0.6;
        self.layer.shadowOffset = CGSizeMake(0, 2);
        self.layer.shadowRadius = 4.0;

//        _iconView = [[UIImageView alloc] initWithFrame:CGRectZero];
//        _iconView.contentMode = UIViewContentModeScaleAspectFit;
//        _iconView.translatesAutoresizingMaskIntoConstraints = NO;
//        [self addSubview:_iconView];

        _label = [[UILabel alloc] initWithFrame:CGRectZero];
        _label.font = [UIFont systemFontOfSize:28 weight:UIFontWeightSemibold];
        _label.textAlignment = NSTextAlignmentCenter;
        _label.textColor = [UIColor blackColor];
        _label.translatesAutoresizingMaskIntoConstraints = NO;
        [self addSubview:_label];

        // 预览只使用文本：尽量靠近顶部显示，上下留少量安全距离。
        [NSLayoutConstraint activateConstraints:@[
            [_label.leadingAnchor constraintEqualToAnchor:self.leadingAnchor constant:4],
            [_label.trailingAnchor constraintEqualToAnchor:self.trailingAnchor constant:-4],
            [_label.topAnchor constraintEqualToAnchor:self.topAnchor constant:2],
            [_label.bottomAnchor constraintEqualToAnchor:self.bottomAnchor constant:-2],
        ]];
    }
    return self;
}

- (void)configureWithKey:(KBKey *)key icon:(UIImage *)icon {
    NSString *text = key.output.length > 0 ? key.output : key.title;
    self.label.text = text;
}

@end