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/DynaPDF/Create PDF with transparency
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 transparency
This example is the version from Wed, 14th Sep 2021.
Project "Create PDF with transparency.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 "Lite" // For this example you can use a Lite, Pro or Enterprise License dim f as FolderItem = SpecialFolder.Desktop.Child("Create PDF with transparency.pdf") call pdf.CreateNewPDF f call pdf.SetViewerPreferences pdf.kvpDisplayDocTitle,pdf.kavNone call pdf.SetDocInfo pdf.kdiAuthor, "Christian Schmitz" call pdf.SetDocInfo pdf.kdiSubject, "My first Xojo output" call pdf.SetDocInfo pdf.kdiProducer, "Xojo test application" call pdf.SetDocInfo pdf.kdiTitle, "My first Xojo output" // We want to use top-down coordinates call pdf.SetPageCoords pdf.kpcTopDown call pdf.Append dim AlphaGS,opaqueGS as integer dim e as new DynapdfExtGStateMBS e.FillAlpha=0.5 // FillAlpha is for filling paths and drawing images e.StrokeAlpha=0.5 // StrokeAlpha is for drawing lines AlphaGS=pdf.CreateExtGState(e) e=new DynapdfExtGStateMBS e.FillAlpha=1.0 // FillAlpha is for filling paths and drawing images e.StrokeAlpha=1.0 // StrokeAlpha is for drawing lines opaqueGS=pdf.CreateExtGState(e) call pdf.SetExtGState AlphaGS DrawPath pdf, 0,0,pdf.kcmWinding, pdf.kddCounterClockwise, pdf.kPDF_SKYBLUE DrawPath pdf, 110,0,pdf.kcmWinding, pdf.kddClockwise, pdf.kPDF_SKYBLUE call pdf.SetExtGState opaqueGS DrawPath pdf, 220,0,pdf.kcmEvenOdd, pdf.kddCounterClockwise, pdf.kPDF_SKYBLUE DrawPath pdf, 330,0,pdf.kcmEvenOdd, pdf.kddClockwise, pdf.kPDF_SKYBLUE 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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