''' <summary>
''' Tests the method GenerateBarcodeStructureAndDrawOnBitmap.
''' </summary>
Public Shared Sub Test(outFilename As String)   
    Using bitmap As System.Drawing.Bitmap = GenerateBarcodeVectorStructureAndDrawOnBitmap(Vintasoft.Barcode.BarcodeType.Code128, "123456789012")   
        bitmap.Save(outFilename)   
    End Using   
End Sub   
   
''' <summary>
''' Generates the barcode vector structure and draws barcode structure on System.Drawing.Bitmap.
''' </summary>
''' <param name="barcodeType">The barcode type.</param>
''' <param name="barcodeValue">The barcode value.</param>
Public Shared Function GenerateBarcodeVectorStructureAndDrawOnBitmap(barcodeType As Vintasoft.Barcode.BarcodeType, barcodeValue As String) As System.Drawing.Bitmap   
    Vintasoft.Barcode.GdiAssembly.Init()   
   
    ' create the barcode generator
    Using writer As New Vintasoft.Barcode.BarcodeWriter()   
        ' specify the barcode type and value
        writer.Settings.Barcode = barcodeType   
        writer.Settings.Value = barcodeValue   
   
        ' get the vector structure of barcode
        Dim barcodeVectorStructure As Vintasoft.Barcode.BarcodeStructure.BarcodeVectorStructure = writer.GetBarcodeVectorStructure()   
        ' get the bounding box of barcode
        Dim barcodeBBox As Vintasoft.Primitives.VintasoftRectI = barcodeVectorStructure.GetBoundingBox()   
   
        ' create Bitmap object that will contain barcode image
        Dim result As New System.Drawing.Bitmap(barcodeBBox.Width, barcodeBBox.Height)   
        ' open Graphics object on bitmap
        Using graphics As System.Drawing.Graphics = System.Drawing.Graphics.FromImage(result)   
            ' clear bitmap
            graphics.Clear(System.Drawing.Color.White)   
            ' draw the barcode vector structure on System.Drawing.Graphics
            DrawBarcodeVectorStructure(barcodeVectorStructure, System.Drawing.Color.Black, graphics)   
        End Using   
        Return result   
    End Using   
End Function   
   
''' <summary>
''' Draws the barcode vector structure on System.Drawing.Graphics.
''' </summary>
''' <param name="barcodeVectorStructure">The barcode vector structure.</param>
''' <param name="color">The barcode color.</param>
''' <param name="graphics">The graphics.</param>
Private Shared Sub DrawBarcodeVectorStructure(barcodeVectorStructure As Vintasoft.Barcode.BarcodeStructure.BarcodeVectorStructure, color As System.Drawing.Color, graphics As System.Drawing.Graphics)   
    Using fillBrush As System.Drawing.Brush = New System.Drawing.SolidBrush(color)   
        For Each vectorElement As Vintasoft.Barcode.BarcodeStructure.BarcodeVectorElement In barcodeVectorStructure.GetVectorElements()   
            Select Case vectorElement.ElementType   
                Case Vintasoft.Barcode.BarcodeStructure.BarcodeVectorElementType.Rectangle   
                    graphics.FillRectangle(fillBrush, Convert(vectorElement.Rect))   
                    Exit Select   
   
                Case Vintasoft.Barcode.BarcodeStructure.BarcodeVectorElementType.Text   
                    Dim textElement As Vintasoft.Barcode.BarcodeStructure.BarcodeTextElement = DirectCast(vectorElement, Vintasoft.Barcode.BarcodeStructure.BarcodeTextElement)   
                    Using font As System.Drawing.Font = CreateFont(textElement.FontInfo)   
                        Dim stringFormat As System.Drawing.StringFormat = CreateStringFormat(textElement.LayoutProperties)   
                        graphics.DrawString(textElement.Text, font, fillBrush, Convert(vectorElement.Rect), stringFormat)   
                    End Using   
                    Exit Select   
                Case Else   
   
                    Throw New System.NotImplementedException()   
            End Select   
        Next   
    End Using   
End Sub   
   
''' <summary>
''' Creates the string format from text layout properties.
''' </summary>
''' <param name="layoutProperties">The layout properties.</param>
Private Shared Function CreateStringFormat(layoutProperties As Vintasoft.Barcode.TextRendering.TextLayoutProperties) As System.Drawing.StringFormat   
    Dim stringFormat As New System.Drawing.StringFormat()   
    stringFormat.FormatFlags = stringFormat.FormatFlags Or System.Drawing.StringFormatFlags.NoClip   
    If layoutProperties.TextAlignment = Vintasoft.Barcode.TextRendering.TextAnchorType.Center Then   
        stringFormat.Alignment = System.Drawing.StringAlignment.Center   
    Else   
        stringFormat.Alignment = System.Drawing.StringAlignment.Near   
    End If   
    Return stringFormat   
End Function   
   
''' <summary>
''' Creates the font by font information.
''' </summary>
''' <param name="fontInfo">The font information.</param>
Private Shared Function CreateFont(fontInfo As Vintasoft.Barcode.TextRendering.TextFontInfo) As System.Drawing.Font   
    Dim fontStyle As System.Drawing.FontStyle = System.Drawing.FontStyle.Regular   
    If fontInfo.IsItalic Then   
        fontStyle = fontStyle Or System.Drawing.FontStyle.Italic   
    End If   
    If fontInfo.IsBold Then   
        fontStyle = fontStyle Or System.Drawing.FontStyle.Bold   
    End If   
    Return New System.Drawing.Font(fontInfo.Name, fontInfo.Size, fontStyle, System.Drawing.GraphicsUnit.Point)   
End Function   
   
''' <summary>
''' Converts the specified Vintasoft.Primitives.VintasoftRect to the System.Drawing.RectangleF.
''' </summary>
''' <param name="rect">The rect.</param>
Private Shared Function Convert(rect As Vintasoft.Primitives.VintasoftRect) As System.Drawing.RectangleF   
    Return New System.Drawing.RectangleF(CSng(rect.X), CSng(rect.Y), CSng(rect.Width), CSng(rect.Height))   
End Function

/// <summary>
/// Tests the method GenerateBarcodeStructureAndDrawOnBitmap.
/// </summary>
public static void Test(string outFilename)
{
    using (System.Drawing.Bitmap bitmap = GenerateBarcodeVectorStructureAndDrawOnBitmap(Vintasoft.Barcode.BarcodeType.Code128, "123456789012"))
    {
        bitmap.Save(outFilename);
    }
}

/// <summary>
/// Generates the barcode vector structure and draws barcode structure on System.Drawing.Bitmap.
/// </summary>
/// <param name="barcodeType">The barcode type.</param>
/// <param name="barcodeValue">The barcode value.</param>
public static System.Drawing.Bitmap GenerateBarcodeVectorStructureAndDrawOnBitmap(
    Vintasoft.Barcode.BarcodeType barcodeType,
    string barcodeValue)
{
    Vintasoft.Barcode.GdiAssembly.Init();

    // create the barcode generator
    using (Vintasoft.Barcode.BarcodeWriter writer = new Vintasoft.Barcode.BarcodeWriter())
    {
        // specify the barcode type and value
        writer.Settings.Barcode = barcodeType;
        writer.Settings.Value = barcodeValue;

        // get the vector structure of barcode
        Vintasoft.Barcode.BarcodeStructure.BarcodeVectorStructure barcodeVectorStructure = writer.GetBarcodeVectorStructure();
        // get the bounding box of barcode
        Vintasoft.Primitives.VintasoftRectI barcodeBBox = barcodeVectorStructure.GetBoundingBox();

        // create Bitmap object that will contain barcode image
        System.Drawing.Bitmap result = new System.Drawing.Bitmap(barcodeBBox.Width, barcodeBBox.Height);
        // open Graphics object on bitmap
        using (System.Drawing.Graphics graphics = System.Drawing.Graphics.FromImage(result))
        {
            // clear bitmap
            graphics.Clear(System.Drawing.Color.White);
            // draw the barcode vector structure on System.Drawing.Graphics
            DrawBarcodeVectorStructure(barcodeVectorStructure, System.Drawing.Color.Black, graphics);
        }
        return result;
    }            
}

/// <summary>
/// Draws the barcode vector structure on System.Drawing.Graphics.
/// </summary>
/// <param name="barcodeVectorStructure">The barcode vector structure.</param>
/// <param name="color">The barcode color.</param>
/// <param name="graphics">The graphics.</param>
private static void DrawBarcodeVectorStructure(
    Vintasoft.Barcode.BarcodeStructure.BarcodeVectorStructure barcodeVectorStructure, 
    System.Drawing.Color color,
    System.Drawing.Graphics graphics)
{
    using (System.Drawing.Brush fillBrush = new System.Drawing.SolidBrush(color)) 
    {
        foreach (Vintasoft.Barcode.BarcodeStructure.BarcodeVectorElement vectorElement in barcodeVectorStructure.GetVectorElements())
        {
            switch (vectorElement.ElementType)
            {
                case Vintasoft.Barcode.BarcodeStructure.BarcodeVectorElementType.Rectangle:
                    graphics.FillRectangle(fillBrush, Convert(vectorElement.Rect));
                    break;

                case Vintasoft.Barcode.BarcodeStructure.BarcodeVectorElementType.Text:
                    Vintasoft.Barcode.BarcodeStructure.BarcodeTextElement textElement = 
                        (Vintasoft.Barcode.BarcodeStructure.BarcodeTextElement)vectorElement;
                    using (System.Drawing.Font font = CreateFont(textElement.FontInfo))
                    {
                        System.Drawing.StringFormat stringFormat = CreateStringFormat(textElement.LayoutProperties);
                        graphics.DrawString(textElement.Text, font, fillBrush, Convert(vectorElement.Rect), stringFormat);
                    }
                    break;

                default:
                    throw new System.NotImplementedException();
            }
        } 
    }
}

/// <summary>
/// Creates the string format from text layout properties.
/// </summary>
/// <param name="layoutProperties">The layout properties.</param>
private static System.Drawing.StringFormat CreateStringFormat(Vintasoft.Barcode.TextRendering.TextLayoutProperties layoutProperties)
{
    System.Drawing.StringFormat stringFormat = new System.Drawing.StringFormat();
    stringFormat.FormatFlags |= System.Drawing.StringFormatFlags.NoClip;
    if (layoutProperties.TextAlignment == Vintasoft.Barcode.TextRendering.TextAnchorType.Center)
        stringFormat.Alignment = System.Drawing.StringAlignment.Center;
    else
        stringFormat.Alignment = System.Drawing.StringAlignment.Near;
    return stringFormat;
}

/// <summary>
/// Creates the font by font information.
/// </summary>
/// <param name="fontInfo">The font information.</param>
private static System.Drawing.Font CreateFont(Vintasoft.Barcode.TextRendering.TextFontInfo fontInfo)
{
    System.Drawing.FontStyle fontStyle = System.Drawing.FontStyle.Regular;
    if (fontInfo.IsItalic)
        fontStyle |= System.Drawing.FontStyle.Italic;
    if (fontInfo.IsBold)
        fontStyle |= System.Drawing.FontStyle.Bold;
    return new System.Drawing.Font(fontInfo.Name, fontInfo.Size, fontStyle, System.Drawing.GraphicsUnit.Point);
}

/// <summary>
/// Converts the specified Vintasoft.Primitives.VintasoftRect to the System.Drawing.RectangleF.
/// </summary>
/// <param name="rect">The rect.</param>
private static System.Drawing.RectangleF Convert(Vintasoft.Primitives.VintasoftRect rect)
{
    return new System.Drawing.RectangleF(
        (float)rect.X,
        (float)rect.Y,
        (float)rect.Width,
        (float)rect.Height
    );
}