Reverted theme generation

app/src/main/java/com/sadellie/unitto/ui/theme/ColorSchemeUtils.kt

@@ -4,9 +4,47 @@ import android.app.WallpaperManager
 import android.content.Context
 import android.os.Build
 import androidx.compose.material3.*
+import androidx.compose.runtime.Stable
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.luminance
 
 
+/**
+ * Shifts colors to make them brighter
+ */
+@Stable
+private fun Color.shiftTo255(ratio: Float): Color {
+    return this
+        .copy(
+            alpha,
+            red + (1.0f - red) * ratio,
+            green + (1.0f - green) * ratio,
+            blue + (1.0f - blue) * ratio,
+        )
+}
+
+/**
+ * Shifts colors to make them darker
+ */
+@Stable
+private fun Color.shiftTo0(ratio: Float): Color {
+    return this
+        .copy(
+            alpha,
+            red * (1.0f - ratio),
+            green * (1.0f - ratio),
+            blue * (1.0f - ratio),
+        )
+}
+
+/**
+ * Decides which colors fits the best for the color that is used as a background
+ */
+@Stable
+private fun Color.getAppropriateTextColor(): Color {
+    return if (luminance() > 0.5) Color.Black else Color.White
+}
+
 /**
  * Function to return dynamic light theme. Determines which API to use based on Android version
  */
@@ -21,12 +59,40 @@ fun dynamicLightTheme(context: Context): ColorScheme {
                 .getWallpaperColors(WallpaperManager.FLAG_SYSTEM)
                 ?: return LightThemeColors
 
+            val primary = Color(
+                red = wallpaperColors.primaryColor.red(),
+                green = wallpaperColors.primaryColor.green(),
+                blue = wallpaperColors.primaryColor.blue()
+            )
+            // Secondary color can be null. For such cases we just generate it from primary
+            val secondary: Color = primary.shiftTo255(0.5f)
+            val background = primary.shiftTo255(0.9f)
+            val onBackground = background.getAppropriateTextColor()
+
             return lightColorScheme(
-                Color(
+                // Settings screen group text, units screen units group text
-                    wallpaperColors.primaryColor.red(),
+                primary = primary.shiftTo0(0.7f),
-                    wallpaperColors.primaryColor.green(),
+                // Text color on Third party Licenses screen
-                    wallpaperColors.primaryColor.blue()
+                onPrimary = primary.shiftTo255(0.3f),
-                )
+                // Selected unit, group, keyboard buttons
+                secondaryContainer = secondary,
+                onSecondaryContainer = secondary.getAppropriateTextColor(),
+                // Background color for all screens
+                background = background,
+                // Main screen input/output text color
+                onBackground = onBackground,
+                // Collapsable top bar background
+                surface = background,
+                // Main screen Unitto text, disabled buttons
+                // Settings screen title and back icon, dialog window title, not selected radio button color
+                // Third party licenses screen title and back icon
+                onSurface = onBackground,
+                surfaceVariant = primary.shiftTo255(0.5f),
+                // Main Screen settings icon, Not selected chips text, short unit names
+                // Settings items secondary text
+                onSurfaceVariant = primary.shiftTo0(0.80f),
+                // Chips outline and cards outline on Third party licenses screen
+                outline = primary.shiftTo0(0.8f),
             )
         }
         // Just in case
@@ -48,12 +114,40 @@ fun dynamicDarkTheme(context: Context): ColorScheme {
                 .getWallpaperColors(WallpaperManager.FLAG_SYSTEM)
                 ?: return DarkThemeColors
 
+            val primary = Color(
+                red = wallpaperColors.primaryColor.red(),
+                green = wallpaperColors.primaryColor.green(),
+                blue = wallpaperColors.primaryColor.blue()
+            )
+            // Secondary color can be null. For such cases we just generate it from primary
+            val secondary: Color = primary.shiftTo0(0.7f)
+            val background = primary.shiftTo0(0.9f)
+            val onBackground = background.getAppropriateTextColor()
+
             return darkColorScheme(
-                Color(
+                // Settings screen group text, units screen units group text
-                    wallpaperColors.primaryColor.red(),
+                primary = primary.shiftTo255(0.7f),
-                    wallpaperColors.primaryColor.green(),
+                // Text color on Third party Licenses screen
-                    wallpaperColors.primaryColor.blue()
+                onPrimary = primary.shiftTo0(0.3f),
-                )
+                // Selected unit, group, keyboard buttons
+                secondaryContainer = secondary,
+                onSecondaryContainer = secondary.getAppropriateTextColor(),
+                // Background color for all screens
+                background = background,
+                // Main screen input/output text color
+                onBackground = onBackground,
+                // Collapsable top bar background
+                surface = background,
+                // Main screen Unitto text, disabled buttons
+                // Settings screen title and back icon, dialog window title, not selected radio button color
+                // Third party licenses screen title and back icon
+                onSurface = onBackground,
+                surfaceVariant = primary.shiftTo0(0.5f),
+                // Main Screen settings icon, Not selected chips text, short unit names
+                // Settings items secondary text
+                onSurfaceVariant = primary.shiftTo255(0.80f),
+                // Chips outline and cards outline on Third party licenses screen
+                outline = primary.shiftTo255(0.8f),
             )
         }
         // Just in case