EPPlus/Drawing/Vml/ExcelVmlDrawingBase.cs

/*******************************************************************************
 * You may amend and distribute as you like, but don't remove this header!
 *
 * EPPlus provides server-side generation of Excel 2007/2010 spreadsheets.
 * See http://www.codeplex.com/EPPlus for details.
 *
 * Copyright (C) 2011  Jan Källman
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.

 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
 * See the GNU Lesser General Public License for more details.
 *
 * The GNU Lesser General Public License can be viewed at http://www.opensource.org/licenses/lgpl-license.php
 * If you unfamiliar with this license or have questions about it, here is an http://www.gnu.org/licenses/gpl-faq.html
 *
 * All code and executables are provided "as is" with no warranty either express or implied. 
 * The author accepts no liability for any damage or loss of business that this product may cause.
 *
 * Code change notes:
 * 
 * Author							Change						Date
 * ******************************************************************************
 * Jan Källman		Initial Release		        2010-06-01
 * Jan Källman		License changed GPL-->LGPL 2011-12-16
 *******************************************************************************/
using System;
using System.Collections.Generic;
using System.Text;
using System.Xml;
using System.Globalization;
using System.Drawing;

namespace OfficeOpenXml.Drawing.Vml
{
    /// <summary>
    /// Horizontal Alingment
    /// </summary>
    public enum eTextAlignHorizontalVml
    {
        Left,
        Center,
        Right
    }
    /// <summary>
    /// Vertical Alingment
    /// </summary>
    public enum eTextAlignVerticalVml
    {
        Top,
        Center,
        Bottom
    }
    /// <summary>
    /// Linestyle
    /// </summary>
    public enum eLineStyleVml
    {
        Solid,
        Round,
        Square,
        Dash,
        DashDot,
        LongDash,
        LongDashDot,
        LongDashDotDot
    }
    /// <summary>
    /// Drawing object used for comments
    /// </summary>
    public class ExcelVmlDrawingBase : XmlHelper
    {
        internal ExcelVmlDrawingBase(XmlNode topNode, XmlNamespaceManager ns) :
            base(ns, topNode)
        {
            SchemaNodeOrder = new string[] { "fill", "stroke", "shadow", "path", "textbox", "ClientData", "MoveWithCells", "SizeWithCells", "Anchor", "Locked", "AutoFill", "LockText", "TextHAlign", "TextVAlign", "Row", "Column", "Visible" };
        }   
        public string Id 
        {
            get
            {
                return GetXmlNodeString("@id");
            }
            set
            {
                SetXmlNodeString("@id",value);
            }
        }
        /// <summary>
        /// Alternative text to be displayed instead of a graphic.
        /// </summary>
        public string AlternativeText
        {
            get
            {
                return GetXmlNodeString("@alt");
            }
            set
            {
                SetXmlNodeString("@alt", value);
            }
        }
        #region "Style Handling methods"
        protected bool GetStyle(string style, string key, out string value)
        {
            string[]styles = style.Split(';');
            foreach(string s in styles)
            {
                if (s.IndexOf(':') > 0)
                {
                    string[] split = s.Split(':');
                    if (split[0] == key)
                    {
                        value=split[1];
                        return true;
                    }
                }
                else if (s == key)
                {
                    value="";
                    return true;
                }
            }
            value="";
            return false;
        }
        protected string SetStyle(string style, string key, string value)
        {
            string[] styles = style.Split(';');
            string newStyle="";
            bool changed = false;
            foreach (string s in styles)
            {
                string[] split = s.Split(':');
                if (split[0].Trim() == key)
                {
                    if (value.Trim() != "") //If blank remove the item
                    {
                        newStyle += key + ':' + value;
                    }
                    changed = true;
                }
                else
                {
                    newStyle += s;
                }
                newStyle += ';';
            }
            if (!changed)
            {
                newStyle += key + ':' + value;
            }
            else
            {
                newStyle = style.Substring(0, style.Length - 1);
            }
            return newStyle;
        }
        #endregion
    }
}