Use CFont class to define the font to use

VocaluxeLib/CFont.cs

@@ -0,0 +1,87 @@
+using System;
+using System.Collections.Generic;
+
+namespace VocaluxeLib
+{
+    public interface IFontObserver
+    {
+        void FontChanged();
+    }
+
+    public class CFont
+    {
+        private string _Name;
+        private EStyle _Style;
+        private float _Height;
+        private readonly List<IFontObserver> _Observers = new List<IFontObserver>();
+
+        public string Name
+        {
+            get { return _Name; }
+            set
+            {
+                if (_Name == value)
+                    return;
+                _Name = value;
+                foreach (IFontObserver observer in _Observers)
+                    observer.FontChanged();
+            }
+        }
+        public EStyle Style
+        {
+            get { return _Style; }
+            set
+            {
+                if (_Style == value)
+                    return;
+                _Style = value;
+                foreach (IFontObserver observer in _Observers)
+                    observer.FontChanged();
+            }
+        }
+        public float Height
+        {
+            get { return _Height; }
+            set
+            {
+                if (Math.Abs(_Height - value) < 0.001)
+                    return;
+                _Height = value;
+                foreach (IFontObserver observer in _Observers)
+                    observer.FontChanged();
+            }
+        }
+
+        public CFont()
+        {
+            _Name = "Normal";
+            _Style = EStyle.Normal;
+            _Height = 25f;
+        }
+
+        public CFont(CFont font)
+        {
+            _Name = font.Name;
+            _Style = font.Style;
+            _Height = font.Height;
+        }
+
+        public CFont(string fontFamily, EStyle style, float h)
+        {
+            _Name = fontFamily;
+            _Style = style;
+            _Height = h;
+        }
+
+        public void AddObserver(IFontObserver observer)
+        {
+            if (!_Observers.Contains(observer))
+                _Observers.Add(observer);
+        }
+
+        public void RemoveObserver(IFontObserver observer)
+        {
+            _Observers.Remove(observer);
+        }
+    }
+}