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/DynaPDF/Create PDF with gradients, overprint and device N colorspace

Required plugins for this example: MBS DynaPDF Plugin

You find this example project in your Plugins Download as a Xojo project file within the examples folder: /DynaPDF/Create PDF with gradients, overprint and device N colorspace

This example is the version from Sat, 8th Oct 2021.

Project "Create PDF with gradients, overprint and device N colorspace.xojo_binary_project"
Filetype text
End FileTypes
MenuBar MenuBar1
MenuItem UntitledMenu1 = ""
MenuItem FileMenu = "&File"
MenuItem FileQuit = "Quit"
MenuItem UntitledMenu5 = ""
MenuItem EditMenu = "&Edit"
MenuItem EditUndo = "&Undo"
MenuItem UntitledMenu0 = "-"
MenuItem EditCut = "Cu&t"
MenuItem EditCopy = "&Copy"
MenuItem EditPaste = "&Paste"
MenuItem EditClear = "Clear"
MenuItem UntitledMenu4 = ""
MenuItem UntitledMenu3 = ""
MenuItem UntitledMenu2 = ""
End MenuBar
Class App Inherits Application
EventHandler Sub Open() Dim pdf As New MyDynapdfMBS dim d as new date pdf.SetLicenseKey "Pro" // For this example you can use a Pro or Enterprise License Dim f As FolderItem = SpecialFolder.Desktop.Child("Create PDF.pdf") call pdf.CreateNewPDF f Call pdf.Append call pdf.SetPageCoords(pdf.kpcTopDown) // Draw something in background so that we can see whether it works Call pdf.SetColorSpace(pdf.kcsDeviceCMYK) Call pdf.SetFillColor(PDF.CMYK(0, 0, 255, 0)) Call pdf.Rectangle(0.0, 0.0, 595.0, 842.0, pdf.kfmFill) Dim gs As New DynaPDFExtGStateMBS gs.OverPrintMode = 1 gs.OverPrintFill = 1 Dim gsHandle As Integer = pdf.CreateExtGState(gs) Call pdf.SetExtGState(gsHandle) // In this example, we emulate a CMYK color space with a DeviceN color space. // The required Postscript calculator function is super simple, it consists of only two braces"{}". Dim cls() As String = Array("Cyan", "Magenta", "Yellow", "Black") Dim cs As Integer = pdf.CreateDeviceNColorSpace(cls, "{}", pdf.kesDeviceCMYK, -1) Call pdf.SetExtFillColorSpace(cs) Dim sh As Integer = pdf.CreateAxialShading( 50.0, 50.0, 550.0, 50.0, 0.5, PDF.CMYK(60, 0, 0, 0), PDF.CMYK(255, 0, 0, 0), False, False) Call pdf.ApplyShading(sh) call pdf.EndPage call pdf.CloseFile f.Launch quit End EventHandler
Protected Sub DrawPath(pdf as dynapdfmbs, x as double, y as double, clipmode as integer, drawdirection as integer, colorvalue as integer) call pdf.SaveGraphicState call pdf.SetFillColor(ColorValue) call pdf.Triangle(x+100, y+50, x+150, y+150, x+50, y+150, pdf.kfmNoFill) call pdf.SetDrawDirection(drawdirection) call pdf.Triangle(x+100, y+180, x+50, y+80, x+150, y+80, pdf.kfmNoFill) call pdf.ClipPath(clipMode, pdf.kfmFillStroke) call pdf.SetFont("Times", pdf.kfsBold + pdf.kfsItalic, 40, true, pdf.kcpUnicode) call pdf.SetFillColor(0) call pdf.WriteText(x+50, y+90, "CLIPPING") call pdf.RestoreGraphicState End Sub
End Class
Class MyDynaPDFMBS Inherits DynaPDFMBS
EventHandler Function Error(ErrorCode as integer, ErrorMessage as string, ErrorType as integer) As integer // output all messages on the console: System.DebugLog str(ErrorCode)+": "+ErrorMessage // and display dialog: Dim d as New MessageDialog //declare the MessageDialog object Dim b as MessageDialogButton //for handling the result d.icon=MessageDialog.GraphicCaution //display warning icon d.ActionButton.Caption="Continue" d.CancelButton.Visible=True //show the Cancel button // a warning or an error? if BitAnd(ErrorType, me.kE_WARNING) = me.kE_WARNING then // if user decided to ignore, we'll ignore if IgnoreWarnings then Return 0 d.Message="A warning occurred while processing your PDF code." // we add a third button to display all warnings d.AlternateActionButton.Caption = "Ignore warnings" d.AlternateActionButton.Visible = true else d.Message="An error occurred while processing your PDF code." end if d.Explanation = str(ErrorCode)+": "+ErrorMessage b=d.ShowModal //display the dialog Select Case b //determine which button was pressed. Case d.ActionButton Return 0 // ignore Case d.AlternateActionButton IgnoreWarnings = true Return 0 // ignore Case d.CancelButton Return -1 // stop End select End EventHandler
Property IgnoreWarnings As Boolean
End Class
End Project

See also:

The items on this page are in the following plugins: MBS DynaPDF Plugin.

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