Context analysis: Co-Occurrence

main/Common Classes/IBViews.swift

@@ -0,0 +1,83 @@
+import UIKit
+import CoreGraphics
+
+// MARK: White Triangle Popup Arrow
+
+@IBDesignable
+class PopupTriangle: UIView {
+	@IBInspectable var rotation: CGFloat = 0
+	@IBInspectable var color: UIColor = .black
+	
+	override func draw(_ rect: CGRect) {
+		guard let c = UIGraphicsGetCurrentContext() else { return }
+		let w = rect.width, h = rect.height
+		switch rotation {
+		case 90: // right
+			c.lineFromTo(x1: 0, y1: 0, x2: w, y2: h/2)
+			c.addLine(to: CGPoint(x: 0, y: h))
+		case 180: // bottom
+			c.lineFromTo(x1: w, y1: 0, x2: w/2, y2: h)
+			c.addLine(to: CGPoint(x: 0, y: 0))
+		case 270: // left
+			c.lineFromTo(x1: w, y1: h, x2: 0, y2: h/2)
+			c.addLine(to: CGPoint(x: w, y: 0))
+		default: // top
+			c.lineFromTo(x1: 0, y1: h, x2: w/2, y2: 0)
+			c.addLine(to: CGPoint(x: w, y: h))
+		}
+		c.closePath()
+		c.setFillColor(color.cgColor)
+		c.fillPath()
+	}
+}
+
+
+// MARK: Label as Tag Bubble
+
+@IBDesignable
+class TagLabel: UILabel {
+	private var em: CGFloat { font.pointSize }
+	@IBInspectable var padTop: CGFloat = 0
+	@IBInspectable var padLeft: CGFloat = 0
+	@IBInspectable var padRight: CGFloat = 0
+	@IBInspectable var padBottom: CGFloat = 0
+	private var padding: UIEdgeInsets {
+		.init(top: padTop + em/6, left: padLeft + em/3,
+			  bottom: padBottom + em/6, right: padRight + em/3)
+	}
+	
+    override func textRect(forBounds bounds: CGRect, limitedToNumberOfLines numberOfLines: Int) -> CGRect {
+		let i = padding
+		let ii = UIEdgeInsets(top: -i.top, left: -i.left, bottom: -i.bottom, right: -i.right)
+		return super.textRect(forBounds: bounds.inset(by: i),
+							  limitedToNumberOfLines: numberOfLines).inset(by: ii)
+    }
+
+    override func drawText(in rect: CGRect) {
+		layer.masksToBounds = true
+		layer.cornerRadius = em/2.5
+		super.drawText(in: rect.inset(by: padding))
+    }
+}
+
+
+// MARK: Percentage meter
+
+@IBDesignable
+class MeterBar: UIView {
+	@IBInspectable var percent: CGFloat = 0 { didSet { setNeedsDisplay() } }
+	@IBInspectable var barColor: UIColor = .sysFg
+	@IBInspectable var horizontal: Bool = false
+	
+	private var normPercent: CGFloat { 1 - max(0, min(percent, 1)) }
+	
+	override func draw(_ rect: CGRect) {
+		let c = UIGraphicsGetCurrentContext()
+		c?.setFillColor(barColor.cgColor)
+		if horizontal {
+			c?.fill(rect.insetBy(dx: normPercent * (rect.width/2), dy: 0))
+		} else {
+			c?.fill(rect.insetBy(dx: 0, dy: normPercent * (rect.height/2)))
+		}
+	}
+}