ConstraintOffsetTarget.swift 2.1 KB

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  1. //
  2. // SnapKit
  3. //
  4. // Copyright (c) 2011-Present SnapKit Team - https://github.com/SnapKit
  5. //
  6. // Permission is hereby granted, free of charge, to any person obtaining a copy
  7. // of this software and associated documentation files (the "Software"), to deal
  8. // in the Software without restriction, including without limitation the rights
  9. // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10. // copies of the Software, and to permit persons to whom the Software is
  11. // furnished to do so, subject to the following conditions:
  12. //
  13. // The above copyright notice and this permission notice shall be included in
  14. // all copies or substantial portions of the Software.
  15. //
  16. // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17. // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18. // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19. // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20. // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21. // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22. // THE SOFTWARE.
  23. #if os(iOS) || os(tvOS)
  24. import UIKit
  25. #else
  26. import AppKit
  27. #endif
  28. public protocol ConstraintOffsetTarget: ConstraintConstantTarget {
  29. }
  30. extension Int: ConstraintOffsetTarget {
  31. }
  32. extension UInt: ConstraintOffsetTarget {
  33. }
  34. extension Float: ConstraintOffsetTarget {
  35. }
  36. extension Double: ConstraintOffsetTarget {
  37. }
  38. extension CGFloat: ConstraintOffsetTarget {
  39. }
  40. extension ConstraintOffsetTarget {
  41. internal var constraintOffsetTargetValue: CGFloat {
  42. let offset: CGFloat
  43. if let amount = self as? Float {
  44. offset = CGFloat(amount)
  45. } else if let amount = self as? Double {
  46. offset = CGFloat(amount)
  47. } else if let amount = self as? CGFloat {
  48. offset = CGFloat(amount)
  49. } else if let amount = self as? Int {
  50. offset = CGFloat(amount)
  51. } else if let amount = self as? UInt {
  52. offset = CGFloat(amount)
  53. } else {
  54. offset = 0.0
  55. }
  56. return offset
  57. }
  58. }