⬆️ :: Update dev-dependencies

Author: fxm90

Example/GradientLoadingBar/BasicExampleViewController.swift

@@ -26,3 +26,73 @@ class BasicExampleViewController: UIViewController {
         GradientLoadingBar.shared.fadeOut()
     }
 }
+
+class ProgressGradientProgressBar: GradientLoadingBar {
+    // MARK: - Public properties
+
+    /// Updates the percentage width of the `gradientActivityIndicatorView` where zero means zero width and one means full width of the current superview.
+    var progress: CGFloat = 1 {
+        didSet {
+            guard let widthConstraint = widthConstraint else { return }
+
+            self.widthConstraint = widthConstraint.setMultiplier(multiplier: progress)
+            gradientActivityIndicatorView.layoutIfNeeded()
+        }
+    }
+
+    // MARK: - Private properties
+
+    private var widthConstraint: NSLayoutConstraint?
+
+    // MARK: - Public methods
+
+    override func setupConstraints(superview: UIView) {
+        let superViewTopAnchor: NSLayoutYAxisAnchor
+        if #available(iOS 11.0, *), isRelativeToSafeArea {
+            superViewTopAnchor = superview.safeAreaLayoutGuide.topAnchor
+        } else {
+            superViewTopAnchor = superview.topAnchor
+        }
+
+        let widthConstraint = gradientActivityIndicatorView.widthAnchor.constraint(equalTo: superview.widthAnchor, multiplier: progress)
+        self.widthConstraint = widthConstraint
+
+        NSLayoutConstraint.activate([
+            gradientActivityIndicatorView.topAnchor.constraint(equalTo: superViewTopAnchor),
+            gradientActivityIndicatorView.heightAnchor.constraint(equalToConstant: height),
+
+            gradientActivityIndicatorView.leadingAnchor.constraint(equalTo: superview.leadingAnchor),
+            widthConstraint
+        ])
+    }
+}
+
+// MARK: - Helpers
+
+private extension NSLayoutConstraint {
+    /// Changes the multiplier constraint.
+    ///
+    /// - Parameter multiplier: The new multiplier.
+    ///
+    /// - Returns: NSLayoutConstraint with new multiplier.
+    ///
+    /// - Note: Based on <https://stackoverflow.com/a/33003217>
+    func setMultiplier(multiplier: CGFloat) -> NSLayoutConstraint {
+        NSLayoutConstraint.deactivate([self])
+
+        let newConstraint = NSLayoutConstraint(item: firstItem as Any,
+                                               attribute: firstAttribute,
+                                               relatedBy: relation,
+                                               toItem: secondItem,
+                                               attribute: secondAttribute,
+                                               multiplier: multiplier,
+                                               constant: constant)
+
+        newConstraint.priority = priority
+        newConstraint.shouldBeArchived = shouldBeArchived
+        newConstraint.identifier = identifier
+
+        NSLayoutConstraint.activate([newConstraint])
+        return newConstraint
+    }
+}

Example/Podfile.lock

@@ -2,9 +2,9 @@ PODS:
   - GradientLoadingBar (2.1.0):
     - LightweightObservable (~> 2.1)
   - LightweightObservable (2.1.1)
-  - SnapshotTesting (1.8.1)
-  - SwiftFormat/CLI (0.45.6)
-  - SwiftLint (0.40.0)
+  - SnapshotTesting (1.8.2)
+  - SwiftFormat/CLI (0.47.0)
+  - SwiftLint (0.40.3)
 
 DEPENDENCIES:
   - GradientLoadingBar (from `../`)
@@ -26,9 +26,9 @@ EXTERNAL SOURCES:
 SPEC CHECKSUMS:
   GradientLoadingBar: 9992888de03a77c1e9364c087aefa1d9c3860ef7
   LightweightObservable: 52abe2a01c8273921b1f66cd66526eb3328ca35a
-  SnapshotTesting: 0bf562bd74d3e9d053cd8f1123bd7b8913304df4
-  SwiftFormat: f1612638c8097ceed03d0149f5f5ab67174ee5dd
-  SwiftLint: 4154893c73a4c52d6240195507eb7a3e3c64087e
+  SnapshotTesting: 38947050d13960d57a4a9c166fcf51bca7d56970
+  SwiftFormat: cb9bd6f3aa76ad9b24043f1f89305ea3449c17b8
+  SwiftLint: dfd554ff0dff17288ee574814ccdd5cea85d76f7
 
 PODFILE CHECKSUM: b55c1a12e9b2403a48a53c11f3f8659e36a20449