Add ClearColor Property for Countdown

ghost1372 · ghost1372 · commit 9b3c88d01d41 · 2025-11-22T14:35:43.000+03:30
diff --git a/dev/DevWinUI.Controls/Controls/Win2D/Countdown/Countdown.Properties.cs b/dev/DevWinUI.Controls/Controls/Win2D/Countdown/Countdown.Properties.cs
@@ -1,4 +1,6 @@
-﻿namespace DevWinUI;
+﻿
+
+namespace DevWinUI;
 
 public partial class Countdown
 {
@@ -125,6 +127,24 @@ public IList<RadialGradientStopData> ErrorBackgroundGradientStops
     public static readonly DependencyProperty ErrorBackgroundGradientStopsProperty =
         DependencyProperty.Register(nameof(ErrorBackgroundGradientStops), typeof(IList<RadialGradientStopData>), typeof(Countdown), new PropertyMetadata(null, OnPropertyChanged));
 
+    public Color ClearColor
+    {
+        get { return (Color)GetValue(ClearColorProperty); }
+        set { SetValue(ClearColorProperty, value); }
+    }
+
+    public static readonly DependencyProperty ClearColorProperty =
+        DependencyProperty.Register(nameof(ClearColor), typeof(Color), typeof(Countdown), new PropertyMetadata(Colors.Transparent, OnClearColorChanged));
+
+    private static void OnClearColorChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
+    {
+        var ctl = (Countdown)d;
+        if (ctl != null)
+        {
+            ctl.UpdateClearColor();
+        }
+    }
+
     private static void OnPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
     {
         var ctl = (Countdown)d;
diff --git a/dev/DevWinUI.Controls/Controls/Win2D/Countdown/Countdown.cs b/dev/DevWinUI.Controls/Controls/Win2D/Countdown/Countdown.cs
@@ -45,6 +45,8 @@ protected override void OnApplyTemplate()
         base.OnApplyTemplate();
         canvas = GetTemplateChild(PART_Canvas) as CanvasAnimatedControl;
 
+        UpdateClearColor();
+
         if (BackgroundGradientStops == null || BackgroundGradientStops.Count == 0)
         {
             var startColor = Color.FromArgb(0x00, 0x6E, 0xEF, 0xF8);
@@ -101,7 +103,13 @@ protected override void OnApplyTemplate()
         Unloaded -= OnUnloaded;
         Unloaded += OnUnloaded;
     }
+    private void UpdateClearColor()
+    {
+        if (canvas == null)
+            return;
 
+        canvas.ClearColor = ClearColor;
+    }
     private void OnUnloaded(object sender, RoutedEventArgs e)
     {
         if (canvas == null)
