internal Size MeasureText(string text, FontFamily fontFamily, FontStyle fontStyle,
            FontWeight fontWeight,
            FontStretch fontStretch, double fontSize)
        {
            var typeface = new Typeface(fontFamily, fontStyle, fontWeight, fontStretch);
            GlyphTypeface glyphTypeface;

            if (!typeface.TryGetGlyphTypeface(out glyphTypeface))
            {
                return MeasureTextSize(text, fontFamily, fontStyle, fontWeight, fontStretch, fontSize);
            }

            double totalWidth = 0;
            double height = 0;

            foreach (var t in text)
            {
                var glyphIndex = glyphTypeface.CharacterToGlyphMap[t];
                var width = glyphTypeface.AdvanceWidths[glyphIndex] * fontSize;
                var glyphHeight = glyphTypeface.AdvanceHeights[glyphIndex] * fontSize;

                if (glyphHeight > height)
                {
                    height = glyphHeight;
                }
                totalWidth += width;
            }
            return new Size(totalWidth, height);
        }

        public GraphicsText(
            string text,
            double left, 
            double top, 
            double right, 
            double bottom,
            Color objectColor,
            double textFontSize,
            string textFontFamilyName,
            FontStyle textFontStyle,
            FontWeight textFontWeight,
            FontStretch textFontStretch,
            double actualScale)
        {
            this.text = text;
            this.rectangleLeft = left;
            this.rectangleTop = top;
            this.rectangleRight = right;
            this.rectangleBottom = bottom;
            this.graphicsObjectColor = objectColor;
            this.textFontSize = textFontSize;
            this.textFontFamilyName = textFontFamilyName;
            this.textFontStyle = textFontStyle;
            this.textFontWeight = textFontWeight;
            this.textFontStretch = textFontStretch;
            this.graphicsActualScale = actualScale;

            graphicsLineWidth = 2;      // used for drawing bounding rectangle when selected

            //RefreshDrawng();
        }

 public object SetStyle(object handle, FontStyle style)
 {
     var font = (FontData)handle;
     font = font.Clone ();
     font.Style = DataConverter.ToWpfFontStyle (style);
     return font;
 }

 /// <summary>
 /// Initializes a new instance of the <see cref="FontInfo"/> class.
 /// </summary>
 /// <param name="family">The family.</param>
 /// <param name="size">The size.</param>
 /// <param name="style">The style.</param>
 /// <param name="weight">The weight.</param>
 public FontInfo(FontFamily family, double size, FontStyle style, FontWeight weight)
 {
     FontFamily = family;
     FontSize = size;
     FontStyle = style;
     FontWeight = weight;
 }

        public static SW.FontStyle ToWpfFontStyle(FontStyle value)
        {
            if (value == FontStyle.Italic) return SW.FontStyles.Italic;
            if (value == FontStyle.Oblique) return SW.FontStyles.Oblique;

            return SW.FontStyles.Normal;
        }

 public Font()
 {
     Weight = FontWeights.Normal;
     Family = Fonts.SystemFontFamilies.ToArray<FontFamily>()[0];
     Size = 15;
     Stretch = FontStretches.Normal;
     Style = FontStyles.Normal;
 }

 public WpfRichTextBoxWordColoringRule(string text, string textColor, string backgroundColor, FontStyle fontStyle, FontWeight fontWeight)
 {
     this.Text = text;
     this.FontColor = textColor;
     this.BackgroundColor = backgroundColor;
     this.Style = fontStyle;
     this.Weight = fontWeight;
 }

 public WpfFontFamilyInfo(FontFamily family, FontWeight weight, 
     FontStyle style, FontStretch stretch)
 {
     _family  = family;
     _weight  = weight;
     _style   = style;
     _stretch = stretch;
 }

 public WpfRichTextBoxRowColoringRule(string condition, string fontColor, string backColor, FontStyle fontStyle, FontWeight fontWeight)
 {
     this.Condition = condition;
     this.FontColor = fontColor;
     this.BackgroundColor = backColor;
     this.Style = fontStyle;
     this.Weight = fontWeight;
 }

 public WpfRichTextBoxWordColoringRule(string text, string textColor, string backgroundColor, FontStyle fontStyle, FontWeight fontWeight)
 {
     Text = text;
     FontColor = textColor;
     BackgroundColor = backgroundColor;
     Style = fontStyle;
     Weight = fontWeight;
 }

 public ColorRule(string condition, Brush foregroundColor, Brush backgroundColor, FontStyle fontStyle, FontWeight fontWeight)
 {
     this.Condition = condition;
     this.ForegroundColor = foregroundColor;
     this.BackgroundColor = backgroundColor;
     this.FontStyle = fontStyle;
     this.FontWeight = fontWeight;
 }

 public WpfRichTextBoxRowColoringRule(string condition, string fontColor, string backColor, FontStyle fontStyle, FontWeight fontWeight)
 {
     Condition = condition;
     FontColor = fontColor;
     BackgroundColor = backColor;
     Style = fontStyle;
     Weight = fontWeight;
 }

        public static ImageSource ToFontAwesomeIcon(this string text, Brush foreBrush, FontStyle fontStyle, FontWeight fontWeight, FontStretch fontStretch)
        {
            var fontFamily = new FontFamily("/GitWorkItems;component/Resources/#FontAwesome");
            if (fontFamily != null && !String.IsNullOrEmpty(text))
            {
                //premier essai, on charge la police directement
                Typeface typeface = new Typeface(fontFamily, fontStyle, fontWeight, fontStretch);

                GlyphTypeface glyphTypeface;
                if (!typeface.TryGetGlyphTypeface(out glyphTypeface))
                {
                    //si ça ne fonctionne pas (et pour le mode design dans certains cas) on ajoute l'uri pack://application
                    typeface = new Typeface(new FontFamily(new Uri("pack://application:,,,"), fontFamily.Source), fontStyle, fontWeight, fontStretch);
                    if (!typeface.TryGetGlyphTypeface(out glyphTypeface))
                        throw new InvalidOperationException("No glyphtypeface found");
                }

                //détermination des indices/tailles des caractères dans la police
                ushort[] glyphIndexes = new ushort[text.Length];
                double[] advanceWidths = new double[text.Length];

                for (int n = 0; n < text.Length; n++)
                {
                    ushort glyphIndex;
                    try
                    {
                        glyphIndex = glyphTypeface.CharacterToGlyphMap[text[n]];

                    }
                    catch (Exception)
                    {
                        glyphIndex = 42;
                    }
                    glyphIndexes[n] = glyphIndex;

                    double width = glyphTypeface.AdvanceWidths[glyphIndex] * 1.0;
                    advanceWidths[n] = width;
                }

                try
                {

                    //création de l'objet DrawingImage (compatible avec Imagesource) à partir d'un glyphrun
                    GlyphRun gr = new GlyphRun(glyphTypeface, 0, false, 1.0, glyphIndexes,
                                                                         new Point(0, 0), advanceWidths, null, null, null, null, null, null);

                    GlyphRunDrawing glyphRunDrawing = new GlyphRunDrawing(foreBrush, gr);
                    return new DrawingImage(glyphRunDrawing);
                }
                catch (Exception ex)
                {
                    // ReSharper disable LocalizableElement
                    Console.WriteLine("Error in generating Glyphrun : " + ex.Message);
                    // ReSharper restore LocalizableElement
                }
            }
            return null;
        }

 public override object Create(string fontName, double size, FontStyle style, FontWeight weight, FontStretch stretch)
 {
     size = GetPointsFromDeviceUnits (size);
     return new FontData (new FontFamily (fontName), size) {
         Style = style.ToWpfFontStyle (),
         Weight = weight.ToWpfFontWeight (),
         Stretch = stretch.ToWpfFontStretch ()
     };
 }

 public Font(FontFamily family, double size, FontStyle style, FontWeight weight, FontStretch stretch)
     : this()
 {
     this.Family = family;
     this.Size = size;
     this.Style = style;
     this.Weight = weight;
     this.Stretch = stretch;
 }

 void avAddressCtrl_Loaded(object sender, EventArgs e)
 {
     initBackBrush = (SolidColorBrush)wpfAddressCtrl.MyControl_Background;
     initForeBrush = wpfAddressCtrl.MyControl_Foreground;
     initFontFamily = wpfAddressCtrl.MyControl_FontFamily;
     initFontSize = wpfAddressCtrl.MyControl_FontSize;
     initFontWeight = wpfAddressCtrl.MyControl_FontWeight;
     initFontStyle = wpfAddressCtrl.MyControl_FontStyle;
 }

		public FontInfo(FontFamily fam, double sz, FontStyle style, FontStretch strc, FontWeight weight, SolidColorBrush c)
		{
			this.Family = fam;
			this.Size = sz;
			this.Style = style;
			this.Stretch = strc;
			this.Weight = weight;
			this.BrushColor = c;
		}

 void Reset()
 {
     root.Blocks.Clear();
     currentFontStyle = FontStyles.Normal;
     currentFontWeight = FontWeights.Normal;
     currentUnderline = false;
     currentStrike = false;
     isHyperlink = false;
 }

        public static Size GetScreenSize(this string text, FontFamily fontFamily, double fontSize, FontStyle fontStyle, FontWeight fontWeight, FontStretch fontStretch) {
            fontFamily = fontFamily ?? new TextBlock().FontFamily;
            fontSize = fontSize > 0 ? fontSize : new TextBlock().FontSize;

            var typeface = new Typeface(fontFamily, fontStyle, fontWeight, fontStretch);
            var ft = new FormattedText(text ?? string.Empty, CultureInfo.CurrentCulture, FlowDirection.LeftToRight, typeface, fontSize, Brushes.Black);

            return new Size(ft.Width, ft.Height);
        }

 private void avAddressCtrl_Loaded(object sender, EventArgs e)
 {
     _initBackBrush = _wpfAddressCtrl.MyControlBackground;
     _initForeBrush = _wpfAddressCtrl.MyControlForeground;
     _initFontFamily = _wpfAddressCtrl.MyControlFontFamily;
     _initFontSize = _wpfAddressCtrl.MyControlFontSize;
     _initFontWeight = _wpfAddressCtrl.MyControlFontWeight;
     _initFontStyle = _wpfAddressCtrl.MyControlFontStyle;
 }