Jel/Models/ViewExtensions.swift


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

//
//  ViewExtensions.swift
//  Jel
//
//  Created by zerocool on 12/25/23.
//

import SwiftUI

extension View {
  /// Applies the given transform if the given condition evaluates to `true`.
  @ViewBuilder func `if`<Content: View>(_ condition: @autoclosure () -> Bool, transform: (Self) -> Content) -> some View {
    if condition() {
      transform(self)
    } else {
      self
    }
  }
}

extension View {
  /// Applies an inverse mask to the given view
  public func inverseMask<Content: View>(_ mask: Content) -> some View {
    let inverseMask = mask
      .foregroundStyle(.black)
      .background(.white)
      .compositingGroup()
      .luminanceToAlpha()
    return self.mask(inverseMask)
  }
}