SvgTransformList.cs :  » GUI » SharpVectorGraphics » SharpVectors » Dom » Svg » C# / CSharp Open Source

using System;
using System.Collections;
using System.Text.RegularExpressions;

namespace SharpVectors.Dom.Svg{
  /// <summary>
  /// Summary description for SvgTransformList.
  /// </summary>
  public class SvgTransformList : SvgList, ISvgTransformList
  {
        #region Constructors
        public SvgTransformList()
        {
        }

        public SvgTransformList(string listString)
        {
            this.FromString(listString);
        }
        #endregion

        #region ISvgTransformList Interface
        public ISvgTransform Initialize(ISvgTransform newItem)
        {
            return (ISvgTransform) base.Initialize(newItem);
        }

        public new ISvgTransform GetItem(uint index)
        {
            return (ISvgTransform) base.GetItem(index);
        }

        public ISvgTransform InsertItemBefore(ISvgTransform newItem, uint index)
        {
            return (ISvgTransform) base.InsertItemBefore(newItem, index);
        }

        public ISvgTransform ReplaceItem(ISvgTransform newItem, uint index)
        {
            return (ISvgTransform) base.ReplaceItem(newItem, index);
        }

        public new ISvgTransform RemoveItem(uint index)
        {
            return (ISvgTransform) base.RemoveItem(index);
        }

        public ISvgTransform AppendItem(ISvgTransform newItem)
        {
            return (ISvgTransform) base.AppendItem(newItem);
        }

        public ISvgTransform CreateSvgTransformFromMatrix(ISvgMatrix matrix)
        {
            return new SvgTransform((SvgMatrix)matrix);
        }

        public ISvgTransform Consolidate()
        {
      SvgTransform result = (SvgTransform)CreateSvgTransformFromMatrix(TotalMatrix);
                    
            Initialize(result);

            return result;
        }
    #endregion

    public SvgMatrix TotalMatrix
    {
      get
      {
        if (NumberOfItems == 0)
        {
          return new SvgMatrix(1, 0, 0, 1, 0, 0);
        }
        else
        {
          SvgMatrix matrix = (SvgMatrix)GetItem(0).Matrix;

          for ( uint i = 1; i < NumberOfItems; i++ )
          {
            matrix = (SvgMatrix)matrix.Multiply(GetItem(i).Matrix);
          }
          return matrix;
        }
      }
    }

        public void FromString(string listString)
    {
      Clear();
      if(listString != null)
      {
        Regex re = new Regex("([A-Za-z]+)\\s*\\(([\\-0-9\\.\\,\\s]+)\\)");
      
        Match match = re.Match(listString);
        while(match.Success)
        {
          AppendItem( new SvgTransform(match.Value) );
          match = match.NextMatch();
        }
      }
    }
  }
}