// Copyright (c) Six Labors.
// Licensed under the Six Labors Split License.

using System;
using System.Collections.Generic;

namespace SixLabors.ImageSharp.Drawing.Processing.Backends {
  /// <summary>
  /// Retained scene created by the CPU drawing backend.
  /// </summary>
  public sealed class DefaultDrawingBackendScene : DrawingBackendScene
  {
      /// <summary>
      /// Initializes a new instance of the <see cref="DefaultDrawingBackendScene"/> class.
      /// </summary>
      /// <param name="scene">The retained CPU flush scene.</param>
      /// <param name="bounds">The target bounds used to create the scene.</param>
      /// <param name="ownedResources">Resources that must stay alive for the retained scene.</param>
      internal DefaultDrawingBackendScene(
          FlushScene scene,
          Rectangle bounds,
          IReadOnlyList<IDisposable>? ownedResources)
          : base(bounds, ownedResources)
          => this.Scene = scene;

      /// <summary>
      /// Gets the retained CPU flush scene when this is a leaf scene.
      /// </summary>
      internal FlushScene? Scene { get; }

      /// <inheritdoc />
      protected override void DisposeCore()
          => this.Scene?.Dispose();
  }
}