Customizable Tooltips
//
// TooltipView.swift
// Customizable Tooltips
//
// Copyright © 2017 Simon Wuyts
//
// 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
@IBDesignable
class TooltipView: UIView {
//MARK: - IBInspectable
@IBInspectable var arrowTopLeft: Bool = false
@IBInspectable var arrowTopCenter: Bool = true
@IBInspectable var arrowTopRight: Bool = false
@IBInspectable var arrowBottomLeft: Bool = false
@IBInspectable var arrowBottomCenter: Bool = false
@IBInspectable var arrowBottomRight: Bool = false
@IBInspectable var fillColor: UIColor = UIColor.white
@IBInspectable var borderColor: UIColor = UIColor(red:0, green:0, blue:0, alpha:0.05)
@IBInspectable var borderRadius: CGFloat = 18
@IBInspectable var borderWidth: CGFloat = 1
@IBInspectable var shadowColor: UIColor = UIColor(red:0, green:0, blue:0, alpha:0.14)
@IBInspectable var shadowOffsetX: CGFloat = 0
@IBInspectable var shadowOffsetY: CGFloat = 2
@IBInspectable var shadowBlur: CGFloat = 10
//MARK: - Global Variables
var tooltipWidth = 0
var tooltipHeight = 0
//MARK: - Initialization
override func draw(_ rect: CGRect) {
drawTooltip()
}
//MARK: - Private Methods
// Orientation methods
private func topLeft(_ x: CGFloat, _ y: CGFloat) -> CGPoint {
return CGPoint(x: x, y: y)
}
private func topRight(_ x: CGFloat, _ y: CGFloat) -> CGPoint {
return CGPoint(x: CGFloat(tooltipWidth) - x, y: y)
}
private func bottomLeft(_ x: CGFloat, _ y: CGFloat) -> CGPoint {
return CGPoint(x: x, y: CGFloat(tooltipHeight) - y)
}
private func bottomRight(_ x: CGFloat, _ y: CGFloat) -> CGPoint {
return CGPoint(x: CGFloat(tooltipWidth) - x, y: CGFloat(tooltipHeight) - y)
}
// Draw methods
private func drawTooltip() {
tooltipWidth = Int(bounds.width)
tooltipHeight = Int(bounds.height)
// Define Bubble Shape
let bubblePath = UIBezierPath()
// Top left corner
bubblePath.move(to: topLeft(0, borderRadius))
bubblePath.addCurve(to: topLeft(borderRadius, 0), controlPoint1: topLeft(0, borderRadius / 2), controlPoint2: topLeft(borderRadius / 2, 0))
// Top right corner
bubblePath.addLine(to: topRight(borderRadius, 0))
bubblePath.addCurve(to: topRight(0, borderRadius), controlPoint1: topRight(borderRadius / 2, 0), controlPoint2: topRight(0, borderRadius / 2))
// Bottom right corner
bubblePath.addLine(to: bottomRight(0, borderRadius))
bubblePath.addCurve(to: bottomRight(borderRadius, 0), controlPoint1: bottomRight(0, borderRadius / 2), controlPoint2: bottomRight(borderRadius / 2, 0))
// Bottom left corner
bubblePath.addLine(to: bottomLeft(borderRadius, 0))
bubblePath.addCurve(to: bottomLeft(0, borderRadius), controlPoint1: bottomLeft(borderRadius / 2, 0), controlPoint2: bottomLeft(0, borderRadius / 2))
bubblePath.close()
// Arrow
if(arrowTopLeft) {
bubblePath.move(to: topLeft(3, 10))
bubblePath.addLine(to: topLeft(3, -4))
bubblePath.addLine(to: topLeft(16, 2))
bubblePath.close()
}
if(arrowTopCenter) {
bubblePath.move(to: topLeft(CGFloat((tooltipWidth / 2) - 5), 0))
bubblePath.addLine(to: topLeft(CGFloat(tooltipWidth / 2), -8))
bubblePath.addLine(to: topLeft(CGFloat(tooltipWidth / 2 + 5), 0))
bubblePath.close()
}
if(arrowTopRight) {
bubblePath.move(to: topRight(16, 2))
bubblePath.addLine(to: topRight(3, -4))
bubblePath.addLine(to: topRight(3, 10))
bubblePath.close()
}
if(arrowBottomLeft) {
bubblePath.move(to: bottomLeft(16, 2))
bubblePath.addLine(to: bottomLeft(3, -4))
bubblePath.addLine(to: bottomLeft(3, 10))
bubblePath.close()
}
if(arrowBottomCenter) {
bubblePath.move(to: bottomLeft(CGFloat((tooltipWidth / 2) - 5), 0))
bubblePath.addLine(to: bottomLeft(CGFloat(tooltipWidth / 2), -8))
bubblePath.addLine(to: bottomLeft(CGFloat(tooltipWidth / 2 + 5), 0))
bubblePath.close()
}
if(arrowBottomRight) {
bubblePath.move(to: bottomRight(3, 10))
bubblePath.addLine(to: bottomRight(3, -4))
bubblePath.addLine(to: bottomRight(16, 2))
bubblePath.close()
}
// Shadow Layer
let shadowShape = CAShapeLayer()
shadowShape.path = bubblePath.cgPath
shadowShape.fillColor = fillColor.cgColor
shadowShape.shadowColor = shadowColor.cgColor
shadowShape.shadowOffset = CGSize(width: CGFloat(shadowOffsetX), height: CGFloat(shadowOffsetY))
shadowShape.shadowRadius = CGFloat(shadowBlur)
shadowShape.shadowOpacity = 0.8
// Border Layer
let borderShape = CAShapeLayer()
borderShape.path = bubblePath.cgPath
borderShape.fillColor = fillColor.cgColor
borderShape.strokeColor = borderColor.cgColor
borderShape.lineWidth = CGFloat(borderWidth*2)
// Fill Layer
let fillShape = CAShapeLayer()
fillShape.path = bubblePath.cgPath
fillShape.fillColor = fillColor.cgColor
// Add Sublayers
self.layer.insertSublayer(shadowShape, at: 0)
self.layer.insertSublayer(borderShape, at: 0)
self.layer.insertSublayer(fillShape, at: 0)
}
}