adding a factory method for creating dynamic color schemes

Author: Johann Dirry

src/MaterialDesign3.MaterialColorUtilities/Scheme/DynamicSchemeFactory.cs

@@ -0,0 +1,73 @@
+#if WPF
+using System.Windows.Media;
+
+namespace MaterialColorUtilities;
+
+/// <summary>
+/// Factory for creating a dynamic color scheme.
+/// </summary>
+public static class DynamicSchemeFactory
+{
+    /// <summary>
+    /// Factory method for creating a dynamic color scheme.
+    /// </summary>
+    /// <remarks>
+    /// The colors are optional. If any of them are null,
+    /// the color will be automatically generated based on the source color.
+    /// </remarks>
+    public static DynamicScheme Create(
+        Color sourceColor,
+        Variant variant,
+        bool isDark,
+        double contrastLevel,
+        Platform platform,
+        SpecVersion specVersion,
+        Color? primary,
+        Color? secondary,
+        Color? tertiary,
+        Color? neutral,
+        Color? neutralVariant,
+        Color? error)
+    {
+        var sourceColorHct = Hct.FromInt(ColorUtils.ArgbFromColor(sourceColor));
+
+        TonalPalette primaryPalette = primary == null
+            ? ColorSpecs.Get(specVersion).GetPrimaryPalette(variant, sourceColorHct, isDark, platform, contrastLevel)
+            : ColorSpecs.Get(specVersion).GetPrimaryPalette(variant, Hct.FromInt(ColorUtils.ArgbFromColor(primary.Value)), isDark, platform, contrastLevel);
+
+        TonalPalette secondaryPalette = secondary == null
+            ? ColorSpecs.Get(specVersion).GetSecondaryPalette(variant, sourceColorHct, isDark, platform, contrastLevel)
+            : ColorSpecs.Get(specVersion).GetSecondaryPalette(variant, Hct.FromInt(ColorUtils.ArgbFromColor(secondary.Value)), isDark, platform, contrastLevel);
+
+        TonalPalette tertiaryPalette = tertiary == null
+            ? ColorSpecs.Get(specVersion).GetTertiaryPalette(variant, sourceColorHct, isDark, platform, contrastLevel)
+            : ColorSpecs.Get(specVersion).GetTertiaryPalette(variant, Hct.FromInt(ColorUtils.ArgbFromColor(tertiary.Value)), isDark, platform, contrastLevel);
+
+        TonalPalette neutralPalette = neutral == null
+            ? ColorSpecs.Get(specVersion).GetNeutralPalette(variant, sourceColorHct, isDark, platform, contrastLevel)
+            : ColorSpecs.Get(specVersion).GetNeutralPalette(variant, Hct.FromInt(ColorUtils.ArgbFromColor(neutral.Value)), isDark, platform, contrastLevel);
+
+        TonalPalette neutralVariantPalette = neutralVariant == null
+            ? ColorSpecs.Get(specVersion).GetNeutralVariantPalette(variant, sourceColorHct, isDark, platform, contrastLevel)
+            : ColorSpecs.Get(specVersion).GetNeutralVariantPalette(variant, Hct.FromInt(ColorUtils.ArgbFromColor(neutralVariant.Value)), isDark, platform, contrastLevel);
+
+        TonalPalette? errorPalette = error == null
+            ? ColorSpecs.Get(specVersion).GetErrorPalette(variant, sourceColorHct, isDark, platform, contrastLevel)
+            : ColorSpecs.Get(specVersion).GetErrorPalette(variant, Hct.FromInt(ColorUtils.ArgbFromColor(error.Value)), isDark, platform, contrastLevel);
+
+        return new DynamicScheme(
+            sourceColorHct,
+            variant,
+            isDark,
+            contrastLevel,
+            platform,
+            specVersion,
+            primaryPalette,
+            secondaryPalette,
+            tertiaryPalette,
+            neutralPalette,
+            neutralVariantPalette,
+            errorPalette);
+    }
+}
+#endif