using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;

namespace Volian.Svg.Library
{
	class SvgFontSettings
	{
		#region ctor
		public SvgFontSettings() { ;}
		public SvgFontSettings(Font myFont)
		{
			_FontFamily = myFont.FontFamily.Name;
			_FontSize = myFont.SizeInPoints.ToString() + "PT";
			_SVGFontStyle = ((myFont.Style & FontStyle.Italic) == FontStyle.Italic ? "italic" : "normal");
			_FontWeight = ((myFont.Style & FontStyle.Bold) == FontStyle.Bold ? "bold" : "normal");
			_TextDecoration = ((myFont.Style & FontStyle.Underline) == FontStyle.Underline ? "underline" : "normal");
		}
		//public SvgFontSettings(string myFontFamily, string myFontSize, string mySvgStyle, string myFontWeight, string myTextDecoration)
		//{
		//  _FontFamilyName = myFontFamily;
		//  _FontSize = myFontSize;
		//  _SVGFontStyle = mySvgStyle;
		//  _FontWeight = myFontWeight;
		//  _TextDecoration = myTextDecoration;
		//}
		#endregion
		#region Inheritance
		private SvgFontSettings _MyParentsSettings = null;
		public SvgFontSettings MyParentsSettings
		{
			get { return _MyParentsSettings; }
			set
			{
				_MyParentsSettings = value;
			}
		}
		#endregion
		#region Internal Inherited Properties
		protected string InheritedFontFamily
		{
			get
			{
				if (_FontFamily != "") return _FontFamily;
				if (_MyParentsSettings != null) return _MyParentsSettings.InheritedFontFamily; // Default
				return "Arial"; // Absolute Default
			}
		}
		protected string InheritedFontSize
		{
			get
			{
				if (_FontSize != "") return _FontSize; // Current Value
				if (_MyParentsSettings != null) return _MyParentsSettings.InheritedFontSize; // Default
				return "9PT"; // Absolute Default
			}
		}
		protected string InheritedFontStyle
		{
			get
			{
				if (_SVGFontStyle != "") return _SVGFontStyle; // Current Value
				if (_MyParentsSettings != null) return _MyParentsSettings.InheritedFontStyle;// Default
				return "normal"; // Absolute Default
			}
		}
		protected string InheritedFontWeight
		{
			get
			{
				if (_FontWeight != "") return _FontWeight;// Current Value
				if (_MyParentsSettings != null) return _MyParentsSettings.InheritedFontWeight;// Default
				return "normal"; // Absolute Default
			}
		}
		protected string InheritedTextDecoration
		{
			get
			{
				if (_TextDecoration != "") return _TextDecoration;// Current Value
				if (_MyParentsSettings != null) return _MyParentsSettings.InheritedTextDecoration;// Default
				return "normal"; // Absolute Default
			}
		}
		#endregion
		#region Scale
		private float _Scale = 1;
		internal float Scale
		{
			get { return _Scale; }
			set { _Scale = value; Font = null; }
		}
		#endregion
		#region Inherited Values
		private Font _Font=null;
		public Font Font
		{
			get
			{
				if (_Font == null)
				{
					_Font = new Font(InheritedFontFamily, _Scale * SvgMeasurement.StringToPoints(InheritedFontSize),
						(InheritedFontStyle == "italic" ? FontStyle.Italic : FontStyle.Regular) |
						(InheritedFontWeight == "bold" ? FontStyle.Bold : FontStyle.Regular) |
						(InheritedTextDecoration == "underline" ? FontStyle.Underline : FontStyle.Regular)
						, GraphicsUnit.Point);
				}
				return _Font;
			}
			set
			{
				// This was disposing fonts that are saved in our static dictionary.
				// caused problems with the step editor display after printing (found with Wolf Creek Chem procedure RW-G02 Step 6.1.17) - jsj 7/14/2017
				//if (_Font != null)
				//{
				//	Console.WriteLine("font dispose {0}, {1}", _Font, _Font.Style);
				//	//_Font.Dispose();
				//}
				if (value != null)
				{
					_FontFamily = value.FontFamily.Name;
					_FontSize = value.SizeInPoints.ToString() + "PT";
					_SVGFontStyle = ((value.Style & FontStyle.Italic) == FontStyle.Italic ? "italic" : "normal");
					_FontWeight = ((value.Style & FontStyle.Bold) == FontStyle.Bold ? "bold" : "normal");
					_TextDecoration = ((value.Style & FontStyle.Underline) == FontStyle.Underline ? "underline" : "normal");
				}
				_Font = value;
			}
		}
		#endregion
		#region Public Properties
		private string _FontFamily = string.Empty;
		public string FontFamily
		{
			get { return _FontFamily; }
			set { _FontFamily = value; Font = null; }
		}
		private string _FontSize = string.Empty;
		public string FontSize
		{
			get { return _FontSize; }
			set { _FontSize = value; Font = null; }
		}
		private string _SVGFontStyle = string.Empty;
		public string SVGFontStyle
		{
			get { return _SVGFontStyle; }
			set { _SVGFontStyle = value; Font = null; }
		}
		private string _FontWeight = string.Empty;
		public string FontWeight
		{
			get { return _FontWeight; }
			set { _FontWeight = value; Font = null; }
		}
		private string _TextDecoration = string.Empty;
		public string TextDecoration
		{
			get { return _TextDecoration; }
			set { _TextDecoration = value; Font = null; }
		}
		#endregion
	}
}