Core - Added fading in and out of profiles

src/Artemis.Core/Models/Profile/Profile.cs

@@ -8,6 +8,15 @@ using SkiaSharp;
 
 namespace Artemis.Core;
 
+
+internal enum FadingStatus
+{
+    Enabled,
+    FadingIn,
+    FadingOut,
+    Disabled
+}
+
 /// <summary>
 ///     Represents a profile containing folders and layers
 /// </summary>
@@ -18,12 +27,15 @@ public sealed class Profile : ProfileElement
     private readonly ObservableCollection<ProfileScript> _scripts;
     private bool _isFreshImport;
     private ProfileElement? _lastSelectedProfileElement;
+    private double _opacity;
 
     internal Profile(ProfileConfiguration configuration, ProfileEntity profileEntity) : base(null!)
     {
         _scripts = new ObservableCollection<ProfileScript>();
         _scriptConfigurations = new ObservableCollection<ScriptConfiguration>();
-
+        _opacity = 0d;
+        
+        FadingStatus = FadingStatus.FadingIn;
         Configuration = configuration;
         Profile = this;
         ProfileEntity = profileEntity;
@@ -81,6 +93,8 @@ public sealed class Profile : ProfileElement
 
     internal List<Exception> Exceptions { get; }
 
+    internal FadingStatus FadingStatus { get; private set; }
+
     /// <inheritdoc />
     public override void Update(double deltaTime)
     {
@@ -97,6 +111,16 @@ public sealed class Profile : ProfileElement
 
             foreach (ProfileScript profileScript in Scripts)
                 profileScript.OnProfileUpdated(deltaTime);
+
+            const double OPACITY_PER_SECOND = 1;
+            if (FadingStatus == FadingStatus.FadingIn)
+                _opacity = Math.Clamp(_opacity + OPACITY_PER_SECOND * deltaTime, 0d, 1d);
+            if (FadingStatus == FadingStatus.FadingOut)
+                _opacity = Math.Clamp(_opacity - OPACITY_PER_SECOND * deltaTime, 0d, 1d);
+            if (_opacity == 0d)
+                FadingStatus = FadingStatus.Disabled;
+            if (_opacity == 1d)
+                FadingStatus = FadingStatus.Enabled;
         }
     }
 
@@ -111,9 +135,17 @@ public sealed class Profile : ProfileElement
             foreach (ProfileScript profileScript in Scripts)
                 profileScript.OnProfileRendering(canvas, canvas.LocalClipBounds);
 
+            using var opacityPaint = new SKPaint();
+            if (Configuration.FadeInAndOut && FadingStatus != FadingStatus.Enabled)
+                opacityPaint.Color = new SKColor(0, 0, 0, (byte)(255d * Easings.CubicEaseInOut(_opacity)));
+
+            canvas.SaveLayer(opacityPaint);
+
             foreach (ProfileElement profileElement in Children)
                 profileElement.Render(canvas, basePosition, editorFocus);
 
+            canvas.Restore();
+
             foreach (ProfileScript profileScript in Scripts)
                 profileScript.OnProfileRendered(canvas, canvas.LocalClipBounds);
 
@@ -165,6 +197,17 @@ public sealed class Profile : ProfileElement
             layer.PopulateLeds(devices);
     }
 
+    /// <summary>
+    ///     Starts the fade out process.
+    /// </summary>
+    public void FadeOut()
+    {
+        if (Disposed)
+            throw new ObjectDisposedException("Profile");
+
+        FadingStatus = FadingStatus.FadingOut;
+    }
+
     #region Overrides of BreakableModel
 
     /// <inheritdoc />