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/DynaPDF/Extract text

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/Extract text

This example is the version from Tue, 7th Jun 2021.

Project "Extract text.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() // This example shows you what the raw text in a PDF is. // for getting the text nice, please use Text extraction.rbp dim pdf as new MyDynapdfMBS dim f as FolderItem dim s as DynaPDFStackMBS dim i,c,ImportFlags as integer dim list as listbox dim text,texts(-1) as string pdf.SetLicenseKey "Pro" // For this example you can use a Pro or Enterprise License 'pdf.SetLicenseKey "Lite" call pdf.CreateNewPDF(nil) Call pdf.SetPageCoords(pdf.kpcBottomUp) ImportFlags=BitwiseOr(pdf.kifContentOnly, pdf.kifImportAsPage) call pdf.SetImportFlags(ImportFlags) f=FindFile("dynapdf_help.pdf") If f=Nil Or f.Exists=False Then MsgBox "Please change code to point to a pdf file." quit end if if pdf.OpenImportFile(f, pdf.kptOpen, "")<>0 then MsgBox "error loading pdf" quit End If // Lite only Call pdf.ImportPDFFile(1) // Pro only to import single page 'Call pdf.ImportPDFPage(1) // now edit thepage Call pdf.EditPage(1) list=OutputWindow.List call pdf.InitStack(s) while pdf.GetPageText(s) c=s.KerningCount-1 for i=0 to c text=s.KerningText(i) if len(text)=1 and asc(text)=0 then text=" " // empty space between words end if list.AddRow text list.Cell(list.LastIndex,1)=str(s.KerningLength(i)) list.Cell(list.LastIndex,2)=str(s.KerningAdvance(i)) list.Cell(list.LastIndex,3)=str(s.KerningWidth(i)) dim ctm as DynapdfMatrixMBS = s.ctm dim tm as DynapdfMatrixMBS = dim m as DynapdfMatrixMBS = MulMatrix(ctm, tm) dim x as Double = 0.0 dim y as Double = 0.0 Transform m,x,y list.Cell(list.LastIndex,4)=str(round(x)) // we round for display list.Cell(list.LastIndex,5)=str(round(y)) texts.Append text next wend OutputWindow.EditField1.text=Join(texts,"") End EventHandler
Function FindFile(name as string) As FolderItem // Look for file in parent folders from executable on dim parent as FolderItem = app.ExecutableFile.Parent while parent<>Nil dim file as FolderItem = parent.Child(name) if file<>Nil and file.Exists then Return file end if parent = parent.Parent wend End Function
Function MulMatrix(m1 as DynapdfMatrixMBS, m2 as DynapdfMatrixMBS) As DynapdfMatrixMBS dim retval as new DynapdfMatrixMBS retval.a = M2.a * M1.a + M2.b * M1.c retval.b = M2.a * M1.b + M2.b * M1.d retval.c = M2.c * M1.a + M2.d * M1.c retval.d = M2.c * M1.b + M2.d * M1.d retval.x = M2.x * M1.a + M2.y * M1.c + M1.x retval.y = M2.x * M1.b + M2.y * M1.d + M1.y return retval End Function
Sub Transform(m as DynapdfMatrixMBS, byref x as double, byref y as double) dim ox as Double = x dim oy as Double = y x = ox * M.a + oy * M.c + M.x y = ox * M.b + oy * M.d + M.y End Sub
End Class
Class OutputWindow Inherits Window
Control List Inherits ListBox
ControlInstance List Inherits ListBox
End Control
Control EditField1 Inherits TextArea
ControlInstance EditField1 Inherits TextArea
End Control
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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