Add support for SwiftUI

.swift-version

@@ -1 +1 @@
-5.1
+5.5

Cartfile

@@ -1 +1 @@
-github "fxm90/LightweightObservable" ~> 1.0
+github "fxm90/LightweightObservable" ~> 2.0

Example/.swiftlint.yml

@@ -10,7 +10,7 @@ file_header:
   required_pattern: |
                     \/\/
                     \/\/  SWIFTLINT_CURRENT_FILENAME
-                    \/\/  (GradientProgressBar|GradientProgressBar_Example|GradientProgressBar_Tests|GradientProgressBar_SnapshotTests)
+                    \/\/  (GradientProgressBar|Example|ExampleTests|ExampleSnapshotTests)
                     \/\/
                     \/\/  Created by .*? on \d{2}\.\d{2}\.\d{2}\.
                     \/\/  Copyright © \d{4} .*?\. All rights reserved\.

Example/Example.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

Example/Example/Assets.xcassets/AccentColor.colorset/Contents.json

@@ -0,0 +1,11 @@
+{
+  "colors" : [
+    {
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Example/Example/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,98 @@
+{
+  "images" : [
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "60x60"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "60x60"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "76x76"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "76x76"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "83.5x83.5"
+    },
+    {
+      "idiom" : "ios-marketing",
+      "scale" : "1x",
+      "size" : "1024x1024"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Example/Example/Assets.xcassets/Contents.json

@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Example/Example/ExampleApp.swift

@@ -0,0 +1,31 @@
+//
+//  ExampleApp.swift
+//  Example
+//
+//  Created by Felix Mau on 02.02.22.
+//  Copyright © 2022 Felix Mau. All rights reserved.
+//
+
+import SwiftUI
+
+@main
+struct ExampleApp: App {
+    var body: some Scene {
+        WindowGroup {
+            EntryPointView()
+                .onAppear {
+                    // Use iOS 13 navigation bar appearance.
+                    //
+                    // While the entry point scene looks better with an opaque navigation background, the child scenes look
+                    // better with the default navigation background. As we can't update the appearance per scene we fallback
+                    // to an appearance with the default background here.
+                    //
+                    // Based on: https://sarunw.com/posts/uinavigationbar-changes-in-ios13/
+                    let appearance = UINavigationBarAppearance()
+                    appearance.configureWithDefaultBackground()
+
+                    UINavigationBar.appearance().scrollEdgeAppearance = appearance
+                }
+        }
+    }
+}

Example/Example/Helper/StoryboardView.swift

@@ -0,0 +1,28 @@
+//
+//  StoryboardView.swift
+//  Example
+//
+//  Created by Felix Mau on 02.02.22.
+//  Copyright © 2022 Felix Mau. All rights reserved.
+//
+
+import SwiftUI
+
+struct StoryboardView: UIViewControllerRepresentable {
+    // MARK: - Public properties
+
+    let name: String
+
+    // MARK: - Public properties
+
+    func makeUIViewController(context _: Context) -> UIViewController {
+        let storyboard = UIStoryboard(name: name, bundle: nil)
+        guard let viewController = storyboard.instantiateInitialViewController() else {
+            fatalError("⚠️ – Could not instantiate initial view controller for storyboard with name `\(name)`.")
+        }
+
+        return viewController
+    }
+
+    func updateUIViewController(_: UIViewController, context _: Context) {}
+}

Example/Example/Preview Content/Preview Assets.xcassets/Contents.json

@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Example/Example/Scenes/AdvancedExample/AdvancedExample.storyboard

@@ -0,0 +1,106 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="19529" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="Y6W-OH-hqX">
+    <device id="retina6_1" orientation="portrait" appearance="light"/>
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="19519"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="System colors in document resources" minToolsVersion="11.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--Advanced Example View Controller-->
+        <scene sceneID="s0d-6b-0kx">
+            <objects>
+                <viewController id="Y6W-OH-hqX" customClass="AdvancedExampleViewController" customModule="Example" customModuleProvider="target" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="5EZ-qb-Rvc">
+                        <rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="RyK-YD-yGW" customClass="GradientProgressBar" customModule="GradientProgressBar">
+                                <rect key="frame" x="16" y="447" width="382" height="2"/>
+                                <color key="backgroundColor" white="0.66666666669999997" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                <constraints>
+                                    <constraint firstAttribute="height" constant="2" id="w6Q-xO-TYd"/>
+                                </constraints>
+                                <userDefinedRuntimeAttributes>
+                                    <userDefinedRuntimeAttribute type="number" keyPath="progress">
+                                        <real key="value" value="0.5"/>
+                                    </userDefinedRuntimeAttribute>
+                                </userDefinedRuntimeAttributes>
+                            </view>
+                            <stackView opaque="NO" contentMode="scaleToFill" distribution="fillEqually" alignment="center" spacing="8" translatesAutoresizingMaskIntoConstraints="NO" id="Odh-xK-4ag" userLabel="Button Stack View">
+                                <rect key="frame" x="0.0" y="818" width="414" height="44"/>
+                                <subviews>
+                                    <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="Yk3-ws-1EO">
+                                        <rect key="frame" x="0.0" y="12.5" width="132.5" height="19"/>
+                                        <fontDescription key="fontDescription" style="UICTFontTextStyleBody"/>
+                                        <color key="tintColor" red="0.0" green="0.47843137250000001" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                                        <inset key="titleEdgeInsets" minX="8" minY="0.0" maxX="0.0" maxY="0.0"/>
+                                        <state key="normal" title="Animate" image="timer" catalog="system">
+                                            <color key="titleColor" systemColor="systemBlueColor"/>
+                                        </state>
+                                        <connections>
+                                            <action selector="animateButtonTouchUpInside:" destination="Y6W-OH-hqX" eventType="touchUpInside" id="Cs2-mD-ZV2"/>
+                                        </connections>
+                                    </button>
+                                    <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="tailTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="wUL-0K-ADk">
+                                        <rect key="frame" x="140.5" y="12" width="133" height="20.5"/>
+                                        <fontDescription key="fontDescription" style="UICTFontTextStyleBody"/>
+                                        <inset key="titleEdgeInsets" minX="9" minY="0.0" maxX="0.0" maxY="0.0"/>
+                                        <state key="normal" title="Set Progress" image="gearshape.2.fill" catalog="system">
+                                            <color key="titleColor" systemColor="systemBlueColor"/>
+                                        </state>
+                                        <connections>
+                                            <action selector="setProgressButtonTouchUpInside:" destination="Y6W-OH-hqX" eventType="touchUpInside" id="8EG-z9-1QQ"/>
+                                        </connections>
+                                    </button>
+                                    <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="VRQ-TU-3pM">
+                                        <rect key="frame" x="281.5" y="12" width="132.5" height="20.5"/>
+                                        <fontDescription key="fontDescription" style="UICTFontTextStyleBody"/>
+                                        <color key="tintColor" red="1" green="0.14913141730000001" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                                        <inset key="titleEdgeInsets" minX="8" minY="0.0" maxX="0.0" maxY="0.0"/>
+                                        <state key="normal" title="Reset" image="arrow.counterclockwise" catalog="system">
+                                            <color key="titleColor" systemColor="systemRedColor"/>
+                                        </state>
+                                        <connections>
+                                            <action selector="resetButtonTouchUpInside:" destination="Y6W-OH-hqX" eventType="touchUpInside" id="acj-nM-duy"/>
+                                        </connections>
+                                    </button>
+                                </subviews>
+                                <constraints>
+                                    <constraint firstAttribute="height" constant="44" id="SO2-Gr-Jrb"/>
+                                </constraints>
+                            </stackView>
+                        </subviews>
+                        <viewLayoutGuide key="safeArea" id="vDu-zF-Fre"/>
+                        <color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                        <constraints>
+                            <constraint firstItem="RyK-YD-yGW" firstAttribute="centerY" secondItem="5EZ-qb-Rvc" secondAttribute="centerY" id="IIc-NP-7IE"/>
+                            <constraint firstItem="vDu-zF-Fre" firstAttribute="trailing" secondItem="Odh-xK-4ag" secondAttribute="trailing" id="RRj-aW-RvG"/>
+                            <constraint firstItem="vDu-zF-Fre" firstAttribute="bottom" secondItem="Odh-xK-4ag" secondAttribute="bottom" id="izk-Am-TsN"/>
+                            <constraint firstItem="Odh-xK-4ag" firstAttribute="leading" secondItem="vDu-zF-Fre" secondAttribute="leading" id="jpn-JJ-quK"/>
+                            <constraint firstAttribute="trailing" secondItem="RyK-YD-yGW" secondAttribute="trailing" constant="16" id="mSa-x7-Q79"/>
+                            <constraint firstItem="RyK-YD-yGW" firstAttribute="leading" secondItem="5EZ-qb-Rvc" secondAttribute="leading" constant="16" id="mdW-v4-Qno"/>
+                        </constraints>
+                    </view>
+                    <connections>
+                        <outlet property="gradientProgressBar" destination="RyK-YD-yGW" id="wan-6l-slq"/>
+                    </connections>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="Ief-a0-LHa" userLabel="First Responder" customClass="UIResponder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="133" y="117"/>
+        </scene>
+    </scenes>
+    <resources>
+        <image name="arrow.counterclockwise" catalog="system" width="115" height="128"/>
+        <image name="gearshape.2.fill" catalog="system" width="128" height="100"/>
+        <image name="timer" catalog="system" width="128" height="121"/>
+        <systemColor name="systemBlueColor">
+            <color red="0.0" green="0.47843137254901963" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+        </systemColor>
+        <systemColor name="systemRedColor">
+            <color red="1" green="0.23137254901960785" blue="0.18823529411764706" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+        </systemColor>
+    </resources>
+</document>