source: branches/HeuristicLab.Problems.GrammaticalOptimization/DynamicDataDisplay/Charts/Shapes/RangeHighlight.cs @ 13398

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Media;
using System.Windows.Controls;
using System.Windows.Shapes;
using System.Windows.Data;
using System.Diagnostics.CodeAnalysis;

namespace Microsoft.Research.DynamicDataDisplay.Charts
{
  /// <summary>
  /// Represents rectangle with corners bound to viewport coordinates.
  /// </summary>
  [TemplatePart(Name = "PART_LinesPath", Type = typeof(Path))]
  [TemplatePart(Name = "PART_RectPath", Type = typeof(Path))]
  public abstract class RangeHighlight : Control, IPlotterElement
  {
    /// <summary>
    /// Initializes a new instance of the <see cref="RangeHighlight"/> class.
    /// </summary>
    protected RangeHighlight()
    {
      Resources = new ResourceDictionary { Source = new Uri("/DynamicDataDisplay;component/Charts/Shapes/RangeHighlightStyle.xaml", UriKind.Relative) };

      Style = (Style)FindResource(typeof(RangeHighlight));
      ApplyTemplate();
    }

    bool partsLoaded = false;
    protected bool PartsLoaded
    {
      get { return partsLoaded; }
    }
    public override void OnApplyTemplate()
    {
      base.OnApplyTemplate();

      linesPath = (Path)Template.FindName("PART_LinesPath", this);
      GeometryGroup linesGroup = new GeometryGroup();
      linesGroup.Children.Add(lineGeometry1);
      linesGroup.Children.Add(lineGeometry2);
      linesPath.Data = linesGroup;

      rectPath = (Path)Template.FindName("PART_RectPath", this);
      rectPath.Data = rectGeometry;

      partsLoaded = true;
    }

    #region Presentation DPs

    public static readonly DependencyProperty FillProperty = DependencyProperty.Register(
      "Fill",
      typeof(Brush),
      typeof(RangeHighlight),
      new PropertyMetadata(Shape.FillProperty.DefaultMetadata.DefaultValue));

    public Brush Fill
    {
      get { return (Brush)GetValue(FillProperty); }
      set { SetValue(FillProperty, value); }
    }

    public static readonly DependencyProperty StrokeProperty = DependencyProperty.Register(
      "Stroke",
      typeof(Brush),
      typeof(RangeHighlight),
      new PropertyMetadata(Shape.StrokeProperty.DefaultMetadata.DefaultValue));

    public Brush Stroke
    {
      get { return (Brush)GetValue(StrokeProperty); }
      set { SetValue(StrokeProperty, value); }
    }

    public static readonly DependencyProperty StrokeThicknessProperty = DependencyProperty.Register(
      "StrokeThickness",
      typeof(double),
      typeof(RangeHighlight),
      new PropertyMetadata(Shape.StrokeThicknessProperty.DefaultMetadata.DefaultValue));

    public double StrokeThickness
    {
      get { return (double)GetValue(StrokeThicknessProperty); }
      set { SetValue(StrokeThicknessProperty, value); }
    }

    public static readonly DependencyProperty StrokeStartLineCapProperty = DependencyProperty.Register(
      "StrokeStartLineCap",
      typeof(PenLineCap),
      typeof(RangeHighlight),
      new PropertyMetadata(Shape.StrokeStartLineCapProperty.DefaultMetadata.DefaultValue));

    public PenLineCap StrokeStartLineCap
    {
      get { return (PenLineCap)GetValue(StrokeStartLineCapProperty); }
      set { SetValue(StrokeStartLineCapProperty, value); }
    }

    public static readonly DependencyProperty StrokeEndLineCapProperty = DependencyProperty.Register(
      "StrokeEndLineCap",
      typeof(PenLineCap),
      typeof(RangeHighlight),
      new PropertyMetadata(Shape.StrokeEndLineCapProperty.DefaultMetadata.DefaultValue));

    public PenLineCap StrokeEndLineCap
    {
      get { return (PenLineCap)GetValue(StrokeEndLineCapProperty); }
      set { SetValue(StrokeEndLineCapProperty, value); }
    }

    public static readonly DependencyProperty StrokeDashCapProperty = DependencyProperty.Register(
      "StrokeDashCap",
      typeof(PenLineCap),
      typeof(RangeHighlight),
      new PropertyMetadata(Shape.StrokeDashCapProperty.DefaultMetadata.DefaultValue));

    public PenLineCap StrokeDashCap
    {
      get { return (PenLineCap)GetValue(StrokeDashCapProperty); }
      set { SetValue(StrokeDashCapProperty, value); }
    }

    public static readonly DependencyProperty StrokeLineJoinProperty = DependencyProperty.Register(
      "StrokeLineJoin",
      typeof(PenLineJoin),
      typeof(RangeHighlight),
      new PropertyMetadata(Shape.StrokeLineJoinProperty.DefaultMetadata.DefaultValue));

    public PenLineJoin StrokeLineJoin
    {
      get { return (PenLineJoin)GetValue(StrokeLineJoinProperty); }
      set { SetValue(StrokeLineJoinProperty, value); }
    }

    public static readonly DependencyProperty StrokeMiterLimitProperty = DependencyProperty.Register(
      "StrokeMiterLimit",
      typeof(double),
      typeof(RangeHighlight),
      new PropertyMetadata(Shape.StrokeMiterLimitProperty.DefaultMetadata.DefaultValue));

    public double StrokeMiterLimit
    {
      get { return (double)GetValue(StrokeMiterLimitProperty); }
      set { SetValue(StrokeMiterLimitProperty, value); }
    }

    public static readonly DependencyProperty StrokeDashOffsetProperty = DependencyProperty.Register(
      "StrokeDashOffset",
      typeof(double),
      typeof(RangeHighlight),
      new PropertyMetadata(Shape.StrokeDashOffsetProperty.DefaultMetadata.DefaultValue));

    public double StrokeDashOffset
    {
      get { return (double)GetValue(StrokeDashOffsetProperty); }
      set { SetValue(StrokeDashOffsetProperty, value); }
    }

    public static readonly DependencyProperty StrokeDashArrayProperty = DependencyProperty.Register(
      "StrokeDashArray",
      typeof(DoubleCollection),
      typeof(RangeHighlight),
      new PropertyMetadata(Shape.StrokeDashArrayProperty.DefaultMetadata.DefaultValue));

    [SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
    public DoubleCollection StrokeDashArray
    {
      get { return (DoubleCollection)GetValue(StrokeDashArrayProperty); }
      set { SetValue(StrokeDashArrayProperty, value); }
    }

    #endregion

    #region Values dependency properties

    /// <summary>
    /// Gets or sets the first value determining position of rectangle in viewport coordinates.
    /// </summary>
    /// <value>The value1.</value>
    public double Value1
    {
      get { return (double)GetValue(Value1Property); }
      set { SetValue(Value1Property, value); }
    }

    public static readonly DependencyProperty Value1Property =
      DependencyProperty.Register(
        "Value1",
        typeof(double),
        typeof(RangeHighlight),
        new FrameworkPropertyMetadata(0.0, OnValueChanged));

    private static void OnValueChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
    {
      RangeHighlight r = (RangeHighlight)d;
      r.OnValueChanged(e);
    }

    /// <summary>
    /// Gets or sets the second value determining position of rectangle in viewport coordinates.
    /// </summary>
    /// <value>The value2.</value>
    public double Value2
    {
      get { return (double)GetValue(Value2Property); }
      set { SetValue(Value2Property, value); }
    }

    public static readonly DependencyProperty Value2Property =
      DependencyProperty.Register(
        "Value2",
        typeof(double),
        typeof(RangeHighlight),
        new FrameworkPropertyMetadata(0.0, OnValueChanged));

    private void OnValueChanged(DependencyPropertyChangedEventArgs e)
    {
      UpdateUIRepresentation();
    }

    #endregion

    #region Geometry

    private Path rectPath;
    private Path linesPath;

    private readonly RectangleGeometry rectGeometry = new RectangleGeometry();
    protected RectangleGeometry RectGeometry
    {
      get { return rectGeometry; }
    }

    private readonly LineGeometry lineGeometry1 = new LineGeometry();
    protected LineGeometry LineGeometry1
    {
      get { return lineGeometry1; }
    }

    private readonly LineGeometry lineGeometry2 = new LineGeometry();
    protected LineGeometry LineGeometry2
    {
      get { return lineGeometry2; }
    }

    #endregion

    #region IPlotterElement Members

    private Plotter2D plotter;
    void IPlotterElement.OnPlotterAttached(Plotter plotter)
    {
      plotter.CentralGrid.Children.Add(this);

      Plotter2D plotter2d = (Plotter2D)plotter;
      this.plotter = plotter2d;
      plotter2d.Viewport.PropertyChanged += Viewport_PropertyChanged;

      UpdateUIRepresentation();
    }

    private void UpdateUIRepresentation()
    {
      if (Plotter == null) return;

      if (partsLoaded)
      {
        UpdateUIRepresentationCore();
      }
    }
    protected virtual void UpdateUIRepresentationCore() { }

    void Viewport_PropertyChanged(object sender, ExtendedPropertyChangedEventArgs e)
    {
      UpdateUIRepresentation();
    }

    void IPlotterElement.OnPlotterDetaching(Plotter plotter)
    {
      Plotter2D plotter2d = (Plotter2D)plotter;
      plotter2d.Viewport.PropertyChanged -= Viewport_PropertyChanged;
      plotter.CentralGrid.Children.Remove(this);

      this.plotter = null;
    }

    public Plotter2D Plotter
    {
      get { return plotter; }
    }

    Plotter IPlotterElement.Plotter
    {
      get { return plotter; }
    }

    #endregion
  }
}