mirror of
https://github.com/MessageKit/MessageKit.git
synced 2026-02-06 19:03:19 +00:00
Steven Deutsch
92 lines
3.0 KiB
Swift
92 lines
3.0 KiB
Swift
/*
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MIT License
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Copyright (c) 2017 MessageKit
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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import UIKit
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fileprivate extension UIRectCorner {
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var imageOrientation: UIImageOrientation {
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switch self {
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case UIRectCorner.topLeft:
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return .down
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case UIRectCorner.bottomLeft:
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return .upMirrored
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case UIRectCorner.topRight:
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return .downMirrored
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case UIRectCorner.bottomRight:
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return .up
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default:
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fatalError("Invalid UIRectCorner. Only supports: .topLeft, .bottomLeft, .topRight, .bottomRight")
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}
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}
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}
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public enum MessageStyle {
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case none
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case bubble
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case bubbleOutline
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case bubbleTail(UIRectCorner)
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case bubbleTailOutline(UIRectCorner)
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public var image: UIImage? {
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guard let path = imagePath else { return nil }
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guard var image = UIImage(contentsOfFile: path) else { return nil }
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switch self {
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case .none:
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return nil
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case .bubble, .bubbleOutline:
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break
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case .bubbleTail(let edge), .bubbleTailOutline(let edge):
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guard let cgImage = image.cgImage else { return nil }
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image = UIImage(cgImage: cgImage, scale: image.scale, orientation: edge.imageOrientation)
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}
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return stretch(image).withRenderingMode(.alwaysTemplate)
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}
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private var imageName: String? {
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switch self {
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default: return "bubble_tailed"
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}
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}
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private var imagePath: String? {
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guard let imageName = imageName else { return nil }
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let assetBundle = Bundle.messageKitAssetBundle()
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return assetBundle.path(forResource: imageName, ofType: "png", inDirectory: "Images")
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}
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private func stretch(_ image: UIImage) -> UIImage {
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let center = CGPoint(x: image.size.width / 2, y: image.size.height / 2)
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let capInsets = UIEdgeInsets(top: center.y, left: center.x, bottom: center.y, right: center.x)
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return image.resizableImage(withCapInsets: capInsets, resizingMode: .stretch)
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}
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}
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