fix: default loading button on high contrast light mode (#437) (#708)

Signed-off-by: Pierre-Yves Lapersonne <[email protected]>

Author: pylapp

CHANGELOG.md

@@ -12,7 +12,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
-- Change color of indicator and borders in high contrast mode (light scheme) for radio and checkbox components (#645)
+- Change color of indicator and borders in high contrast mode (light scheme) for radio and checkbox components (Orange-OpenSource/ouds-ios##645)
+- Change color of button loader in high contrast light mode (Orange-OpenSource/ouds-ios#437)
 
 ## [0.15.0](https://github.com/Orange-OpenSource/ouds-ios/compare/0.14.0...0.15.0) - 2025-05-28
 

OUDS/Core/Components/Sources/Buttons/Internal/ButtonStyle+BorderModifier.swift

@@ -22,6 +22,8 @@ struct ButtonBorderModifier: ViewModifier {
     @Environment(\.theme) private var theme
     @Environment(\.oudsUseMonochrome) private var useMonochrome
     @Environment(\.oudsOnColoredSurface) private var onColoredSurface
+    @Environment(\.colorScheme) private var colorScheme
+    @Environment(\.colorSchemeContrast) private var colorSchemeContrast
 
     // MARK: Stored Properties
 
@@ -88,7 +90,11 @@ struct ButtonBorderModifier: ViewModifier {
         case .pressed:
             useMonochrome ? theme.button.buttonColorBorderDefaultPressedMono : theme.button.buttonColorBorderDefaultPressed
         case .loading:
-            useMonochrome ? theme.button.buttonColorBorderDefaultLoadingMono : theme.button.buttonColorBorderDefaultLoading
+            if colorSchemeContrast == .increased, colorScheme == .light {
+                theme.colors.colorContentDefault
+            } else {
+                useMonochrome ? theme.button.buttonColorBorderDefaultLoadingMono : theme.button.buttonColorBorderDefaultLoading
+            }
         case .disabled:
             useMonochrome ? theme.button.buttonColorBorderDefaultDisabledMono : theme.button.buttonColorBorderDefaultDisabled
         }

OUDS/Core/Components/Sources/Buttons/Internal/ButtonStyle+LoadingModifiers.swift

@@ -21,10 +21,12 @@ import SwiftUI
 /// Used to add a progress indicator instead of content (Text, Icon)
 /// As the button must keep the size of the content, the indicator is
 /// added as overlay on top, and the content is hidden applying an opacity.
+/// If the device has the high contrast mode enabled, changes the loader color.
 struct ButtonLoadingContentModifier: ViewModifier {
 
     @Environment(\.theme) private var theme
     @Environment(\.colorScheme) private var colorScheme
+    @Environment(\.colorSchemeContrast) private var colorSchemeContrast
     @Environment(\.oudsUseMonochrome) private var useMonochrome
 
     // MARK: Stored Properties
@@ -46,7 +48,11 @@ struct ButtonLoadingContentModifier: ViewModifier {
     private var colorToken: MultipleColorSemanticTokens {
         switch hierarchy {
         case .default:
-            useMonochrome ? theme.button.buttonColorContentDefaultLoadingMono : theme.button.buttonColorContentDefaultLoading
+            if colorSchemeContrast == .increased, colorScheme == .light {
+                theme.colors.colorContentDefault
+            } else {
+                useMonochrome ? theme.button.buttonColorContentDefaultLoadingMono : theme.button.buttonColorContentDefaultLoading
+            }
         case .strong:
             useMonochrome ? theme.button.buttonColorContentStrongLoadingMono : theme.colors.colorContentOnActionLoading
         case .minimal: