initial

Pods/ESTabBarController-swift/Sources/ESTabBarItemBadgeView.swift

@@ -0,0 +1,116 @@
+//
+//  ESTabBarItemBadgeView.swift
+//
+//  Created by Vincent Li on 2017/2/8.
+//  Copyright (c) 2013-2018 ESTabBarController (https://github.com/eggswift/ESTabBarController)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import UIKit
+
+/*
+ * ESTabBarItemBadgeView
+ * 这个类定义了item中使用的badge视图样式，默认为ESTabBarItemBadgeView类对象。
+ * 你可以设置ESTabBarItemContentView的badgeView属性为自定义的ESTabBarItemBadgeView子类，这样就可以轻松实现 自定义通知样式了。
+ */
+open class ESTabBarItemBadgeView: UIView {
+    
+    /// 默认颜色
+    public static var defaultBadgeColor = UIColor(red: 255.0/255.0, green: 59.0/255.0, blue: 48.0/255.0, alpha: 1.0)
+    
+    /// Badge color
+    open var badgeColor: UIColor? = defaultBadgeColor {
+        didSet {
+            imageView.backgroundColor = badgeColor
+        }
+    }
+    
+    /// Badge value, supprot nil, "", "1", "someText". Hidden when nil. Show Little dot style when "".
+    open var badgeValue: String? {
+        didSet {
+            badgeLabel.text = badgeValue
+        }
+    }
+    
+    /// Image view
+    open var imageView: UIImageView = {
+        let imageView = UIImageView.init(frame: CGRect.zero)
+        imageView.backgroundColor = .clear
+        return imageView
+    }()
+    
+    /// 显示badgeValue的Label
+    open var badgeLabel: UILabel = {
+        let badgeLabel = UILabel.init(frame: CGRect.zero)
+        badgeLabel.backgroundColor = .clear
+        badgeLabel.textColor = .white
+        badgeLabel.font = UIFont.systemFont(ofSize: 13.0)
+        badgeLabel.textAlignment = .center
+        return badgeLabel
+    }()
+    
+    /// Initializer
+    public override init(frame: CGRect) {
+        super.init(frame: frame)
+        self.addSubview(imageView)
+        self.addSubview(badgeLabel)
+        self.imageView.backgroundColor = badgeColor
+    }
+    public required init?(coder aDecoder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    /*
+     *  通过layoutSubviews()布局子视图，你可以通过重写此方法实现自定义布局。
+     **/
+    open override func layoutSubviews() {
+        super.layoutSubviews()
+        guard let badgeValue = badgeValue else {
+            imageView.isHidden = true
+            badgeLabel.isHidden = true
+            return
+        }
+        
+        imageView.isHidden = false
+        badgeLabel.isHidden = false
+        
+        if badgeValue == "" {
+            imageView.frame = CGRect.init(origin: CGPoint.init(x: (bounds.size.width - 8.0) / 2.0, y: (bounds.size.height - 8.0) / 2.0), size: CGSize.init(width: 8.0, height: 8.0))
+        } else {
+            imageView.frame = bounds
+        }
+        imageView.layer.cornerRadius = imageView.bounds.size.height / 2.0
+        badgeLabel.sizeToFit()
+        badgeLabel.center = imageView.center
+    }
+    
+    /*
+     *  通过此方法计算badge视图需要占用父视图的frame大小，通过重写此方法可以自定义badge视图的大小。
+     *  如果你需要自定义badge视图在Content中的位置，可以设置Content的badgeOffset属性。
+     */
+    open override func sizeThatFits(_ size: CGSize) -> CGSize {
+        guard let _ = badgeValue else {
+            return CGSize.init(width: 18.0, height: 18.0)
+        }
+        let textSize = badgeLabel.sizeThatFits(CGSize.init(width: CGFloat.greatestFiniteMagnitude, height: CGFloat.greatestFiniteMagnitude))
+        return CGSize.init(width: max(18.0, textSize.width + 10.0), height: 18.0)
+    }
+    
+}