source: branches/HeuristicLab.Problems.GrammaticalOptimization/DynamicDataDisplay/InjectedViewport2D.cs @ 12586

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;

namespace Microsoft.Research.DynamicDataDisplay
{
  /// <summary>
  /// Represents a Viewport of InjectedPlotter, which has a way for InjectedPlottter to change the behavior of
  /// how Visible property is coerced in dependence on Parent plotter's Visible.
  /// </summary>
  internal sealed class InjectedViewport2D : Viewport2D
  {
    internal InjectedViewport2D(FrameworkElement host, Plotter2D plotter) : base(host, plotter) { }

    protected override DataRect CoerceVisible(DataRect newVisible)
    {
      DataRect baseValue = base.CoerceVisible(newVisible);
      if (CoerceVisibleFunc != null)
        return CoerceVisibleFunc(newVisible, baseValue);
      else
        return baseValue;
    }

    public Func<DataRect, DataRect, DataRect> CoerceVisibleFunc
    {
      get;
      set;
    }
  }
}