Updated the OnDrawingContent method across multiple classes to accept a DrawContext? context parameter, replacing the parameterless version. This change standardizes the drawing API and enables context-aware drawing operations.

The refactor includes:
- Modifying method signatures in classes like `AnimationScenario`, `Images`, `DrawingArea`, `AttributeView`, `Snake`, and others.
- Removing the parameterless `OnDrawingContent` method from the `View` class.
- Updating calls to the base class implementation to pass the `context` parameter.
- Adjusting comments and documentation to reflect the new method signature.

This change ensures consistency and prepares the codebase for more advanced drawing capabilities.

Examples/UICatalog/Scenarios/AnimationScenario/AnimationScenario.cs

@@ -173,7 +173,7 @@ public class AnimationScenario : Scenario
         private Rectangle _oldSize = Rectangle.Empty;
         public void NextFrame () { _currentFrame = (_currentFrame + 1) % _frameCount; }
 
-        protected override bool OnDrawingContent ()
+        protected override bool OnDrawingContent (DrawContext? context)
         {
             if (_frameCount == 0)
             {

Examples/UICatalog/Scenarios/Images.cs

@@ -631,7 +631,7 @@ public class Images : Scenario
         public Image<Rgba32> FullResImage;
         private Image<Rgba32> _matchSize;
 
-        protected override bool OnDrawingContent ()
+        protected override bool OnDrawingContent (DrawContext? context)
         {
             if (FullResImage == null)
             {
@@ -708,7 +708,7 @@ public class Images : Scenario
             return (columns, rows);
         }
 
-        protected override bool OnDrawingContent ()
+        protected override bool OnDrawingContent (DrawContext? context)
         {
             if (_palette == null || _palette.Count == 0)
             {

Examples/UICatalog/Scenarios/LineDrawing.cs

@@ -273,7 +273,7 @@ public class DrawingArea : View
     public ITool CurrentTool { get; set; } = new DrawLineTool ();
     public DrawingArea () { AddLayer (); }
 
-    protected override bool OnDrawingContent ()
+    protected override bool OnDrawingContent (DrawContext? context)
     {
         foreach (LineCanvas canvas in Layers)
         {
@@ -380,7 +380,7 @@ public class AttributeView : View
     }
 
     /// <inheritdoc/>
-    protected override bool OnDrawingContent ()
+    protected override bool OnDrawingContent (DrawContext? context)
     {
         Color fg = Value.Foreground;
         Color bg = Value.Background;

Examples/UICatalog/Scenarios/RegionScenario.cs

@@ -268,7 +268,7 @@ public class AttributeView : View
     }
 
     /// <inheritdoc/>
-    protected override bool OnDrawingContent ()
+    protected override bool OnDrawingContent (DrawContext? context)
     {
         Color fg = Value?.Foreground ?? Color.Black;
         Color bg = Value?.Background ?? Color.Black;

Examples/UICatalog/Scenarios/Snake.cs

@@ -322,7 +322,7 @@ public class Snake : Scenario
 
         private SnakeState State { get; }
 
-        protected override bool OnDrawingContent ()
+        protected override bool OnDrawingContent (DrawContext? context)
         {
             SetAttribute (white);
             ClearViewport ();

Examples/UICatalog/Scenarios/TextEffectsScenario.cs

@@ -109,7 +109,7 @@ internal class GradientsView : View
     private const int LABEL_HEIGHT = 1;
     private const int GRADIENT_WITH_LABEL_HEIGHT = GRADIENT_HEIGHT + LABEL_HEIGHT + 1; // +1 for spacing
 
-    protected override bool OnDrawingContent ()
+    protected override bool OnDrawingContent (DrawContext? context)
     {
         DrawTopLineGradient (Viewport);