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@simonwuyts
Last active February 5, 2024 19:28
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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)
}
}
@kaiobrito
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Hey Simon, nice work!

I think you forgot to redraw the view after changing the arrows. Right now, It works pretty well on Interface Builder but nothing happens when you change the attributes by code.

let frame = CGRect(x: 50, y: 50, width: 100, height: 40)

let view = TooltipView(frame: frame)
view.backgroundColor = UIColor.clear
view.isOpaque = false
view.arrowTopCenter = false // The top center arrow is still visible after this
view.arrowTopRight = true // The top right arrow isn't visible after this

@mh-nadeem
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yeah its not work if we change in code

@krishnagniyes
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Great work..

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