LeadKit/Sources/Structures/DrawingOperations/RoundDrawingOperation.swift

50 lines
1.8 KiB
Swift

//
// Copyright (c) 2017 Touch Instinct
//
// 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 CoreGraphics
struct RoundDrawingOperation: DrawingOperation {
private let image: CGImage
private let imageSize: CGSize
private let radius: CGFloat
public init(image: CGImage, imageSize: CGSize, radius: CGFloat) {
self.image = image
self.imageSize = imageSize
self.radius = radius
}
public var contextSize: CGContextSize {
return imageSize.ceiledContextSize
}
public func apply(in context: CGContext) {
let imageLocation = CGRect(origin: .zero, size: imageSize)
context.addPath(UIBezierPath(roundedRect: imageLocation, cornerRadius: radius).cgPath)
context.clip()
context.draw(image, in: imageLocation)
}
}