source: branches/HeuristicLab.Problems.GrammaticalOptimization/SharpVectorModel/Fills/SvgPatternElement.cs @ 12803

using System;
using System.Xml;

namespace SharpVectors.Dom.Svg
{
    public sealed class SvgPatternElement : SvgStyleableElement, ISvgPatternElement
    {
        #region Private Fields

        private ISvgAnimatedEnumeration patternUnits;
        private ISvgAnimatedEnumeration patternContentUnits;
        private ISvgAnimatedTransformList patternTransform;
        private ISvgAnimatedLength x;
        private ISvgAnimatedLength y;
        private ISvgAnimatedLength width;
        private ISvgAnimatedLength height;

        private SvgUriReference svgURIReference;
        private SvgExternalResourcesRequired svgExternalResourcesRequired;
        private SvgFitToViewBox svgFitToViewBox;
        private SvgTests svgTests;

        #endregion

        #region Constructors and Destructor

        public SvgPatternElement(string prefix, string localname, string ns, SvgDocument doc)
      : base(prefix, localname, ns, doc)
    {
      svgURIReference              = new SvgUriReference(this);
      svgExternalResourcesRequired = new SvgExternalResourcesRequired(this);
      svgFitToViewBox              = new SvgFitToViewBox(this);
      svgTests                     = new SvgTests(this);
        }

        #endregion

        #region Public Properties

        public XmlNodeList Children
    {
      get
      {
        XmlNodeList children = SelectNodes("svg:*", OwnerDocument.NamespaceManager);
        if(children.Count > 0)
        {
          return children;
        }
        else
        {
          // check any eventually referenced gradient
          if(ReferencedElement == null)
          {
            // return an empty list
            return children;
          }
          else
          {
            return ReferencedElement.Children;
          }
        }
      }
    }

    #endregion

        #region ISvgElement Members

        /// <summary>
        /// Gets a value indicating whether this SVG element is renderable.
        /// </summary>
        /// <value>
        /// This is <see langword="'true"/> if the element is renderable; otherwise,
        /// it is <see langword="false"/>.
        /// </value>
        public override bool IsRenderable
        {
            get
            {
                return false;
            }
        }

        /// <summary>
        /// Gets a value providing a hint on the rendering defined by this element.
        /// </summary>
        /// <value>
        /// An enumeration of the <see cref="SvgRenderingHint"/> specifying the rendering hint.
        /// This will always return <see cref="SvgRenderingHint.Containment"/>
        /// </value>
        public override SvgRenderingHint RenderingHint
        {
            get
            {
                return SvgRenderingHint.Containment;
            }
        }

        #endregion

    #region ISvgPatternElement Members

    public ISvgAnimatedEnumeration PatternUnits
    {
      get
      {
        if(!HasAttribute("patternUnits") && ReferencedElement != null)
        {
          return ReferencedElement.PatternUnits;
        }
        else
        {
          if(patternUnits == null)
          {
            SvgUnitType type;
            switch(GetAttribute("patternUnits"))
            {
              case "userSpaceOnUse":
                type = SvgUnitType.UserSpaceOnUse;
                break;
              default:
                type = SvgUnitType.ObjectBoundingBox;
                break;
            }
            patternUnits = new SvgAnimatedEnumeration((ushort)type);
          }
          return patternUnits;
        }
      }
    }

    public ISvgAnimatedEnumeration PatternContentUnits
    {
      get
      {
        if(!HasAttribute("patternContentUnits") && ReferencedElement != null)
        {
          return ReferencedElement.PatternContentUnits;
        }
        else
        {
          if(patternContentUnits == null)
          {
            SvgUnitType type;
            switch(GetAttribute("patternContentUnits"))
            {
              case "objectBoundingBox":
                type = SvgUnitType.ObjectBoundingBox;
                break;
              default:
                type = SvgUnitType.UserSpaceOnUse;
                break;
            }
            patternContentUnits = new SvgAnimatedEnumeration((ushort)type);
          }
          return patternContentUnits;
        }
      }
    }

    public ISvgAnimatedTransformList PatternTransform
    {
      get
      {
        if(!HasAttribute("patternTransform") && ReferencedElement != null)
        {
          return ReferencedElement.PatternTransform;
        }
        else{
          if(patternTransform == null)
          {
            patternTransform = new SvgAnimatedTransformList(GetAttribute("patternTransform"));
          }
          return patternTransform;
        }
      }
    }

    public ISvgAnimatedLength X
    {
      get
      {
        if(!HasAttribute("x") && ReferencedElement != null)
        {
          return ReferencedElement.X;
        }
        else{
          if(x == null)
          {
            x = new SvgAnimatedLength(this, "x", SvgLengthDirection.Horizontal, "0");
          }
          return x;
        }
      }
    }

    public ISvgAnimatedLength Y
    {
      get
      {
        if(!HasAttribute("y") && ReferencedElement != null)
        {
          return ReferencedElement.Y;
        }
        else
        {
          if(y == null)
          {
            y = new SvgAnimatedLength(this, "y", SvgLengthDirection.Vertical, "0");
          }
          return y;
        }
      }
    }

    public ISvgAnimatedLength Width
    {
      get
      {
        if(!HasAttribute("width") && ReferencedElement != null)
        {
          return ReferencedElement.Width;
        }
        else
        {
          if(width == null)
          {
            width = new SvgAnimatedLength(this, "width", SvgLengthDirection.Horizontal, "0");
          }
          return width;
        }
      }
    }

    public ISvgAnimatedLength Height
    {
      get
      {
        if(!HasAttribute("height") && ReferencedElement != null)
        {
          return ReferencedElement.Height;
        }
        else
        {
          if(height == null)
          {
            height = new SvgAnimatedLength(this, "height", SvgLengthDirection.Vertical, "0");
          }
          return height;
        }
      }
    }

    #endregion

    #region ISvgURIReference Members

    public ISvgAnimatedString Href
    {
      get
      {
        return svgURIReference.Href;
      }
    }

    public SvgPatternElement ReferencedElement
    {
      get
      {
        return svgURIReference.ReferencedNode as SvgPatternElement;
      }
    }

    #endregion

    #region ISvgExternalResourcesRequired Members

    public ISvgAnimatedBoolean ExternalResourcesRequired
    {
      get
      {
        return svgExternalResourcesRequired.ExternalResourcesRequired;
      }
    }

    #endregion

    #region ISvgFitToViewBox Members

    public ISvgAnimatedRect ViewBox
    {
      get
      {
        return svgFitToViewBox.ViewBox;
      }
    }

    public ISvgAnimatedPreserveAspectRatio PreserveAspectRatio
    {
      get
      {
        return svgFitToViewBox.PreserveAspectRatio;
      }
    }

    #endregion

    #region ISvgTests Members

    public ISvgStringList RequiredFeatures
    {
      get { return svgTests.RequiredFeatures; }
    }

    public ISvgStringList RequiredExtensions
    {
      get { return svgTests.RequiredExtensions; }
    }

    public ISvgStringList SystemLanguage
    {
      get { return svgTests.SystemLanguage; }
    }

    public bool HasExtension(string extension)
    {
      return svgTests.HasExtension(extension);
    }

        #endregion
  }
}