'''' This code is part of Document Solutions for Imaging demos.'' Copyright (c) MESCIUS inc. All rights reserved.''Imports SystemImports System.IOImports System.Collections.GenericImports System.DrawingImports System.GlobalizationImports GrapeCity.Documents.ImagingImports GrapeCity.Documents.TextImports GrapeCity.Documents.DrawingImports GrapeCity.Documents.BarcodeImports GCTEXT = GrapeCity.Documents.TextImports GCDRAW = GrapeCity.Documents.Drawing
'' This sample prints a set of shipping labels that also include barcodes.'' Note also the use of tab stops to vertically align data.Public Class ShippingLabels
    '' Client info. This sample prints one shipping label for each client.    Class Client        Public Name As String        Public Addr As String        Public City As String        Public Country As String
        Public Sub New(name As String, addr As String, city As String, country As String)            Me.Name = name            Me.Addr = addr            Me.City = city            Me.Country = country        End Sub    End Class
    '' The clients base.    Shared ReadOnly s_clients As New List(Of Client) From {        New Client("Simons bistro", "Vinbæltet 34", "København", "Denmark"),        New Client("Richter Supermarkt", "Starenweg 5", "Genève", "Switzerland"),        New Client("Bon app'", "12, rue des Bouchers", "Marseille", "France"),        New Client("Rattlesnake Canyon Grocery", "2817 Milton Dr.", "Albuquerque", "USA"),        New Client("Lehmanns Marktstand", "Magazinweg 7", "Frankfurt a.M.", "Germany"),        New Client("LILA-Supermercado", "Carrera 52 con Ave. Bolívar #65-98 Llano Largo", "Barquisimeto", "Venezuela"),        New Client("Ernst Handel", "Kirchgasse 6", "Graz", "Austria"),        New Client("Pericles Comidas clásicas", "Calle Dr. Jorge Cash 321", "México D.F.", "Mexico"),        New Client("Drachenblut Delikatessen", "Walserweg 21", "Aachen", "Germany"),        New Client("Queen Cozinha", "Alameda dos Canàrios, 891", "São Paulo", "Brazil"),        New Client("Tortuga Restaurante", "Avda. Azteca 123", "México D.F.", "Mexico"),        New Client("Save-a-lot Markets", "187 Suffolk Ln.", "Boise", "USA"),        New Client("Franchi S.p.A.", "Via Monte Bianco 34", "Torino", "Italy")    }
    '' The main sample driver.    Public Function GenerateImageStream(targetMime As String, pixelSize As Size, dpi As Single, opaque As Boolean, Optional sampleParams As String() = Nothing) As Stream        Dim bmp = New GcBitmap(pixelSize.Width, pixelSize.Height, opaque, dpi, dpi)        Dim g = bmp.CreateGraphics(Color.White)        Dim ms = New MemoryStream()        Dim tw As GcTiffWriter = Nothing        If targetMime = Util.MimeTypes.TIFF Then            tw = New GcTiffWriter(ms)        End If
        Init(pixelSize)
        '' Loop over clients, print up to 4 labels per page:        Dim i As Integer = 0        For pg = 0 To (s_clients.Count + 3) \ 4 - 1            PrintLabel(s_clients(i), g, New RectangleF(hmargin, vmargin, _labelWidth, _labelHeight)) : i += 1            If i < s_clients.Count Then                PrintLabel(s_clients(i), g, New RectangleF(hmargin + _labelWidth, vmargin, _labelWidth, _labelHeight)) : i += 1            End If            If i < s_clients.Count Then                PrintLabel(s_clients(i), g, New RectangleF(hmargin, vmargin + _labelHeight, _labelWidth, _labelHeight)) : i += 1            End If            If i < s_clients.Count Then                PrintLabel(s_clients(i), g, New RectangleF(hmargin + _labelWidth, vmargin + _labelHeight, _labelWidth, _labelHeight)) : i += 1            End If
            '' For formats other than TIFF print just one page:            If tw Is Nothing Then Exit For            If i < s_clients.Count Then                tw.AppendFrame(bmp)                bmp.Clear(Color.White)            End If        Next
        Select Case targetMime            Case Util.MimeTypes.TIFF                tw.AppendFrame(bmp)                tw.Dispose()            Case Util.MimeTypes.JPEG                bmp.SaveAsJpeg(ms)            Case Util.MimeTypes.PNG                bmp.SaveAsPng(ms)            Case Util.MimeTypes.BMP                bmp.SaveAsBmp(ms)            Case Util.MimeTypes.GIF                bmp.SaveAsGif(ms)            Case Util.MimeTypes.WEBP                bmp.SaveAsWebp(ms)            Case Util.MimeTypes.ICO                bmp.SaveAsIco(ms, Nothing, IcoFrameEncoding.Png)            Case Else                Throw New Exception($"Encoding {targetMime} is not supported.")        End Select
        bmp.Dispose()        g.Dispose()        Term()        Return ms    End Function
    '' Consts and vars used to render the labels:    Const hmargin As Single = 24, vmargin As Single = 36    Dim _labelWidth As Single, _labelHeight As Single    Dim _pBold As GCDRAW.Pen, _pNorm As GCDRAW.Pen    Dim _fontReg As GCTEXT.Font, _fontBold As GCTEXT.Font    Dim _tfSmall As TextFormat, _tfSmallB As TextFormat, _tfLarge As TextFormat    Dim _tsHeader As List(Of TabStop), _tsFrom As List(Of TabStop), _tsCodes As List(Of TabStop)    Dim _logo As GCDRAW.Image    Dim _ia As ImageAlign    Dim bcTop As GcBarcode, bcBottom As GcBarcode
    '' Init variables used to render labels:    Sub Init(pixelSize As Size)        _labelWidth = (pixelSize.Width - hmargin * 2) / 2        _labelHeight = _labelWidth        _pBold = New GCDRAW.Pen(Color.Black, 2)        _pNorm = New GCDRAW.Pen(Color.Black, 0.5F)        _logo = GCDRAW.Image.FromFile(Path.Combine("Resources", "ImagesBis", "AcmeLogo-vertical-250px.png"))        _fontReg = GCTEXT.Font.FromFile(Path.Combine("Resources", "Fonts", "NotoSans-Regular.ttf"))        _fontBold = GCTEXT.Font.FromFile(Path.Combine("Resources", "Fonts", "NotoSans-Bold.ttf"))        _tfSmall = New TextFormat() With {.Font = _fontReg, .FontSize = 9}        _tfSmallB = New TextFormat() With {.Font = _fontBold, .FontSize = 10}        _tfLarge = New TextFormat() With {.Font = _fontBold, .FontSize = 17}
        _ia = New ImageAlign(ImageAlignHorz.Right, ImageAlignVert.Center, True, True, True, False, False)        _tsHeader = New List(Of TabStop) From {New TabStop(24, TabStopAlignment.Leading), New TabStop(108, TabStopAlignment.Leading)}        _tsFrom = New List(Of TabStop) From {New TabStop(12, TabStopAlignment.Leading), New TabStop(72, TabStopAlignment.Leading)}        _tsCodes = New List(Of TabStop) From {New TabStop(_labelWidth / 8, TabStopAlignment.Center)}
        bcTop = New GcBarcode() With {            .TextFormat = _tfSmall,            .CodeType = CodeType.Code_128_B,            .HorizontalAlignment = ImageAlignHorz.Center,            .VerticalAlignment = ImageAlignVert.Center,            .ScaleFactor = 2        }        bcTop.Options.CaptionPosition = BarCodeCaptionPosition.Below
        bcBottom = New GcBarcode() With {            .TextFormat = _tfSmall,            .CodeType = CodeType.Code_128auto,            .HorizontalAlignment = ImageAlignHorz.Center,            .VerticalAlignment = ImageAlignVert.Center,            .ScaleFactor = 2        }        bcBottom.Options.CaptionPosition = BarCodeCaptionPosition.Below    End Sub
    Sub Term()        If _logo IsNot Nothing Then _logo.Dispose()        _logo = Nothing    End Sub
    Sub PrintLabel(client As Client, g As GcGraphics, bounds As RectangleF)        '' Used to randomize some sample data:        Dim rnd = Util.NewRandom()
        '' Sample shipper/sender data:        Dim shipper = If(rnd.Next(2) = 0, "United Package", "Speedy Express")        Dim sender = (name:="ACME Inc.", addr:="1 Main Street", city:="Metropolis", country:="USA", zip:="34567")        Dim shuttle = rnd.Next(10000, 15000).ToString()        Dim area = rnd.Next(1, 12).ToString()        Dim tour = rnd.Next(0, 20).ToString()
        Dim tl = g.CreateTextLayout()        tl.DefaultFormat.Font = _tfSmall.Font        tl.DefaultFormat.FontSize = _tfSmall.FontSize        tl.LineSpacingScaleFactor = 0.75F        tl.ParagraphAlignment = ParagraphAlignment.Center
        '' Header        Dim hHeader = bounds.Height / 2 / 5        Dim rHeader = New RectangleF(bounds.X, bounds.Y, bounds.Width, hHeader)        tl.TabStops = _tsHeader        tl.Append(vbTab & shipper)        tl.Append(vbTab & "CMR", _tfSmallB)        tl.Append(vbLf & vbTab & vbTab & Util.TimeNow().ToString("dd-MMM-yy", CultureInfo.InvariantCulture))        tl.MaxHeight = rHeader.Height        tl.MaxWidth = rHeader.Width        tl.PerformLayout(True)        g.DrawTextLayout(tl, rHeader.Location)
        Dim rLogo = rHeader        rLogo.Inflate(-5, -5)        g.DrawImage(_logo, rLogo, Nothing, _ia)
        '' From        Dim hFrom = hHeader        Dim rFrom = New RectangleF(bounds.X, rHeader.Bottom, bounds.Width, hFrom)        tl.Clear()        tl.TabStops = _tsFrom        tl.Append(vbTab & "From:" & vbTab & sender.name & vbLf &                  vbTab & vbTab & sender.addr & vbLf &                  vbTab & vbTab & $"{sender.city}, {sender.country} {sender.zip}")        tl.MaxHeight = rFrom.Height        tl.MaxWidth = rFrom.Width        tl.PerformLayout(True)        g.DrawTextLayout(tl, rFrom.Location)
        '' To        Dim hTo = bounds.Height / 2 / 3        Dim rTo = New RectangleF(bounds.X, rFrom.Bottom, bounds.Width, hTo)        tl.Clear()        tl.TabStops = _tsFrom        tl.Append(vbTab & "To:" & vbTab & client.Name & vbLf &                  vbTab & vbTab & client.Addr & vbLf &                  vbTab & vbTab & client.City & vbLf &                  vbTab & vbTab & client.Country)        tl.MaxHeight = rTo.Height        tl.MaxWidth = rTo.Width        tl.PerformLayout(True)        g.DrawTextLayout(tl, rTo.Location)
        '' Codes        Dim hCodes = bounds.Height / 2 / (15.0F / 4.0F)        Dim rCodes = New RectangleF(bounds.X, rTo.Bottom, bounds.Width, hCodes)        tl.TabStops = _tsCodes
        tl.Clear()        tl.AppendLine(vbTab & "Shuttle")        tl.Append(vbTab & shuttle, _tfLarge)        tl.MaxHeight = rCodes.Height        tl.MaxWidth = rCodes.Width / 4.0F        tl.PerformLayout(True)        g.DrawTextLayout(tl, rCodes.Location)
        tl.Clear()        tl.AppendLine(vbTab & "Area")        tl.Append(vbTab & area, _tfLarge)        tl.PerformLayout(True)        g.DrawTextLayout(tl, New PointF(rCodes.X + rCodes.Width / 4.0F, rCodes.Y))
        tl.Clear()        tl.AppendLine(vbTab & "Exception")        tl.Append(vbTab & " ", _tfLarge)        tl.PerformLayout(True)        g.DrawTextLayout(tl, New PointF(rCodes.X + rCodes.Width / 4.0F * 2.0F, rCodes.Y))
        tl.Clear()        tl.AppendLine(vbTab & "Tour")        tl.Append(vbTab & tour, _tfLarge)        tl.PerformLayout(True)        g.DrawTextLayout(tl, New PointF(rCodes.X + rCodes.Width / 4.0F * 3.0F, rCodes.Y))
        '' Barcodes        Dim hBarcodes = bounds.Height / 2.0F        Dim rBcTop = New RectangleF(bounds.X, rCodes.Bottom, bounds.Width, hBarcodes / 2.0F)        Dim rBcBottom = New RectangleF(bounds.X, rBcTop.Bottom, bounds.Width, hBarcodes / 2.0F)
        bcTop.Text = client.Country        g.DrawBarcode(bcTop, rBcTop)
        '' Make up a longish "code":        Dim code = $"{Char.ToUpper(client.Name(0))}{Char.ToUpper(client.Addr(0))}{Char.ToUpper(client.City(0))}{Char.ToUpper(client.Country(0))}"        bcBottom.Text = $"{code}{client.GetHashCode().ToString("X12")}"        g.DrawBarcode(bcBottom, rBcBottom)
        '' Lines:        g.DrawLine(rHeader.Left, rHeader.Bottom, rHeader.Right, rHeader.Bottom, _pNorm)        g.DrawLine(rFrom.Left, rFrom.Bottom, rFrom.Right, rFrom.Bottom, _pNorm)        g.DrawLine(rTo.Left, rTo.Bottom, rTo.Right, rTo.Bottom, _pNorm)        g.DrawLine(rCodes.Left, rCodes.Bottom, rCodes.Right, rCodes.Bottom, _pNorm)
        g.DrawLine(rCodes.Left + rCodes.Width / 4.0F, rCodes.Top, rCodes.Left + rCodes.Width / 4.0F, rCodes.Bottom, _pNorm)        g.DrawLine(rCodes.Left + rCodes.Width / 4.0F * 2.0F, rCodes.Top, rCodes.Left + rCodes.Width / 4.0F * 2.0F, rCodes.Bottom, _pNorm)        g.DrawLine(rCodes.Left + rCodes.Width / 4.0F * 3.0F, rCodes.Top, rCodes.Left + rCodes.Width / 4.0F * 3.0F, rCodes.Bottom, _pNorm)
        g.DrawRectangle(bounds, _pBold)    End SubEnd Class