//
//  KBTopImageButton.m
//  keyBoard
//
//  上图下文按钮：图片在上、文字在下，内部简单布局，适合图标型功能入口
//

#import "KBTopImageButton.h"
#import "UIColor+Extension.h"

@interface KBTopImageButton()
@property (nonatomic, strong) UIImageView *iconView;
@property (nonatomic, strong) UILabel *textLabel;
@end

@implementation KBTopImageButton

- (instancetype)initWithFrame:(CGRect)frame {
    if (self = [super initWithFrame:frame]) {
        _spacing = 6;
        _iconSize = CGSizeMake(44, 44);

        _iconView = [[UIImageView alloc] init];
        _iconView.contentMode = UIViewContentModeScaleAspectFit;
        [self addSubview:_iconView];

        _textLabel = [[UILabel alloc] init];
        _textLabel.font = [UIFont systemFontOfSize:12 weight:UIFontWeightSemibold];
        _textLabel.textColor = [UIColor colorWithHex:0x2B2B2B];
        _textLabel.textAlignment = NSTextAlignmentCenter;
        _textLabel.numberOfLines = 2;
        [self addSubview:_textLabel];
    }
    return self;
}

- (CGSize)intrinsicContentSize {
    CGFloat width = MAX(_iconSize.width, 60);
    return CGSizeMake(width, _iconSize.height + _spacing + 34);
}

- (void)layoutSubviews {
    [super layoutSubviews];
    CGFloat W = CGRectGetWidth(self.bounds);
    CGFloat H = CGRectGetHeight(self.bounds);
    CGSize iconS = self.iconSize;
    CGFloat ix = (W - iconS.width) * 0.5;
    self.iconView.frame = CGRectMake(ix, 0, iconS.width, iconS.height);

    CGFloat labelTop = CGRectGetMaxY(self.iconView.frame) + self.spacing;
    CGFloat lh = MAX(0, H - labelTop);
    self.textLabel.frame = CGRectMake(0, labelTop, W, lh);
}

- (void)setHighlighted:(BOOL)highlighted {
    [super setHighlighted:highlighted];
    self.alpha = highlighted ? 0.6 : 1.0;
}

@end