Add IOS support (#32)

ios/.gitignore

@@ -0,0 +1,38 @@
+.idea/
+.vagrant/
+.sconsign.dblite
+.svn/
+
+.DS_Store
+*.swp
+profile
+
+DerivedData/
+build/
+GeneratedPluginRegistrant.h
+GeneratedPluginRegistrant.m
+
+.generated/
+
+*.pbxuser
+*.mode1v3
+*.mode2v3
+*.perspectivev3
+
+!default.pbxuser
+!default.mode1v3
+!default.mode2v3
+!default.perspectivev3
+
+xcuserdata
+
+*.moved-aside
+
+*.pyc
+*sync/
+Icon?
+.tags*
+
+/Flutter/Generated.xcconfig
+/Flutter/ephemeral/
+/Flutter/flutter_export_environment.sh

ios/Classes/SystemThemePlugin.swift

@@ -0,0 +1,66 @@
+import Flutter
+import SwiftUI
+
+public class SystemThemePlugin: NSObject, FlutterPlugin {
+    public static func register(with registrar: FlutterPluginRegistrar) {
+        let channel = FlutterMethodChannel(name: "system_theme", binaryMessenger: registrar.messenger())
+        let instance = SystemThemePlugin()
+        registrar.addMethodCallDelegate(instance, channel: channel)
+    }
+
+    public func handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
+        switch call.method {
+        case "SystemTheme.accentColor":
+            if #available(iOS 14.0, *) {
+                var colors:[String:[String:Int]?] = [:]
+                colors["accent"] = Color.accentColor.toHex()
+                result(colors)
+            } else {
+                result(nil)
+            }
+        default:
+            result(FlutterMethodNotImplemented)
+        }
+    }
+}
+
+@available(iOS 14.0, *)
+extension Color {
+    // Function to convert SwiftUI Color to a Hex String
+    func toHex() -> Dictionary<String,Int>? {
+        // Extract the RGBA components from the Color
+        let components = self.cgColorComponents
+        // Check if components contain at least RGB
+        guard components.count >= 3 else { return nil }
+
+        let r = components[0]
+        let g = components[1]
+        let b = components[2]
+        let a = components.count >= 4 ? components[3] : 1.0
+
+        return [
+            "R":lroundf(Float(r * 255)),
+            "G":lroundf(Float(g * 255)),
+            "B":lroundf(Float(b * 255)),
+            "A":lroundf(Float(a * 255))
+        ]
+    }
+
+    // Helper function to extract RGBA components
+    private var cgColorComponents: [CGFloat] {
+        // Convert SwiftUI Color to UIColor
+        let uiColor = UIColor(self)
+
+        // Get CGColor and its components
+        guard let components = uiColor.cgColor.components else {
+            return []
+        }
+
+        // Handle the case of grayscale color (1 component)
+        if components.count == 2 {
+            return [components[0], components[0], components[0], components[1]]
+        }
+
+        return components
+    }
+}

ios/system_theme.podspec

@@ -0,0 +1,23 @@
+#
+# To learn more about a Podspec see http://guides.cocoapods.org/syntax/podspec.html.
+# Run `pod lib lint system_theme.podspec` to validate before publishing.
+#
+Pod::Spec.new do |s|
+  s.name             = 'system_theme'
+  s.version          = '0.0.1'
+  s.summary          = 'A new Flutter plugin project.'
+  s.description      = <<-DESC
+A new Flutter plugin project.
+                       DESC
+  s.homepage         = 'http://example.com'
+  s.license          = { :file => '../LICENSE' }
+  s.author           = { 'Your Company' => 'email@example.com' }
+  s.source           = { :path => '.' }
+  s.source_files = 'Classes/**/*'
+  s.dependency 'Flutter'
+  s.platform = :ios, '11.0'
+
+  # Flutter.framework does not contain a i386 slice.
+  s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES', 'EXCLUDED_ARCHS[sdk=iphonesimulator*]' => 'i386' }
+  s.swift_version = '5.0'
+end

lib/system_theme.dart

@@ -28,6 +28,7 @@ extension PlatformHelpers on TargetPlatform {
       [
         TargetPlatform.windows,
         TargetPlatform.macOS,
+        TargetPlatform.iOS,
         TargetPlatform.android,
         TargetPlatform.linux,
       ].contains(this);
@@ -54,6 +55,8 @@ class SystemTheme {
   ///   - Windows
   ///   - Web
   ///   - Android
+  ///   - iOS
+  ///   - Mac
   ///
   /// It returns [kDefaultFallbackColor] for unsupported platforms
   static final SystemAccentColor accentColor = SystemAccentColor(fallbackColor)

pubspec.yaml

@@ -26,6 +26,9 @@ flutter:
       macos:
         package: com.bruno.system_theme
         pluginClass: SystemThemePlugin
+      ios:
+        package: com.bruno.system_theme
+        pluginClass: SystemThemePlugin
       android:
         package: com.bruno.system_theme
         pluginClass: SystemThemePlugin