source: branches/HeuristicLab.Problems.GrammaticalOptimization/DynamicDataDisplay/Charts/Navigation/Navigation/NavigationBase.cs @ 12503

using System.Windows;
using System.Windows.Media;

namespace Microsoft.Research.DynamicDataDisplay.Navigation
{
    /// <summary>Base class for all navigation providers</summary>
  public abstract class NavigationBase : ViewportElement2D {
    protected NavigationBase() {
      ManualTranslate = true;
      ManualClip = true;
      Loaded += NavigationBase_Loaded;
    }

    private void NavigationBase_Loaded(object sender, RoutedEventArgs e) {
      OnLoaded(e);
    }

    protected virtual void OnLoaded(RoutedEventArgs e) { }

    protected override void OnRenderCore(DrawingContext dc, RenderState state) {
      Color color = Color.FromArgb(0, 0, 0, 0);
      dc.DrawRectangle(new SolidColorBrush(color), null, state.Output);
    }
  }
}