components/Buttons/examples/supplemental/ButtonsTypicalUseSupplemental.swift

// Copyright 2016-present the Material Components for iOS authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import UIKit
import MaterialComponents.MaterialButtons

class ButtonsTypicalUseSupplemental: NSObject {

  static let floatingButtonPlusDimension = CGFloat(24)

  static func plusShapePath() -> UIBezierPath {
    let bezierPath = UIBezierPath()
    bezierPath.move(to: CGPoint(x: 19, y: 13))
    bezierPath.addLine(to: CGPoint(x: 13, y: 13))
    bezierPath.addLine(to: CGPoint(x: 13, y: 19))
    bezierPath.addLine(to: CGPoint(x: 11, y: 19))
    bezierPath.addLine(to: CGPoint(x: 11, y: 13))
    bezierPath.addLine(to: CGPoint(x: 5, y: 13))
    bezierPath.addLine(to: CGPoint(x: 5, y: 11))
    bezierPath.addLine(to: CGPoint(x: 11, y: 11))
    bezierPath.addLine(to: CGPoint(x: 11, y: 5))
    bezierPath.addLine(to: CGPoint(x: 13, y: 5))
    bezierPath.addLine(to: CGPoint(x: 13, y: 11))
    bezierPath.addLine(to: CGPoint(x: 19, y: 11))
    bezierPath.addLine(to: CGPoint(x: 19, y: 13))
    bezierPath.close()
    return bezierPath
  }

  static func createPlusShapeLayer(_ floatingButton: MDCFloatingButton) -> CAShapeLayer {
    let plusShape = CAShapeLayer()
    plusShape.path = ButtonsTypicalUseSupplemental.plusShapePath().cgPath
    plusShape.fillColor = UIColor.white.cgColor
    plusShape.position =
      CGPoint(
        x: (floatingButton.frame.size.width - floatingButtonPlusDimension) / 2,
        y: (floatingButton.frame.size.height - floatingButtonPlusDimension) / 2)
    return plusShape
  }

}