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/DynaPDF/Extract image objects

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 image objects

This example is the version from Fri, 7th Jan 2021.

Project "Extract image objects.xojo_binary_project"
Class App Inherits Application
Const kEditClear = "&Delete"
Const kFileQuit = "&Quit"
Const kFileQuitShortcut = ""
EventHandler Sub Open() dim f as FolderItem = GetOpenFolderItem(MyFileTypes.Pdf) if f=nil then quit end if dim p as new MyDynapdfMBS p.SetLicenseKey "Lite" // For this example you can use a Lite, Pro or Enterprise License call p.CreateNewPDF(nil) // Skip anything that is not required call p.SetImportFlags p.kifImportAll + p.kifImportAsPage // From which PDF file do you want to extract the images? call p.OpenImportFile(f, p.kptOpen, "") // Comment this out if you want to extract the images from specific pages only call p.ImportPDFFile(1, 1.0, 1.0) // Uncomment this section if you want to extract images from specific pages only 'dim pageCount as integer = p.GetInPageCount 'for i as integer = 1 to pageCount ' call p.ImportPDFPage(i) 'next call p.CloseImportFile dim dest as FolderItem = SpecialFolder.Desktop dim b as BinaryStream dim counter as integer = 0 dim n as integer = p.GetImageObjCount-1 for i as integer = 0 to n dim Image as DynaPDFImageMBS = p.GetImageObj(i, p.kpfNone) counter=counter+1 Select case Image.filter case DynapdfMBS.kdfDCTDecode // JPEG f=dest.Child(str(Counter)+".jpg") b=f.CreateBinaryFile("") if b<>Nil then b.Write image.Buffer b.Close end if case DynapdfMBS.kdfJPXDecode // JPEG 2000 f=dest.Child(str(Counter)+".jp2") b=f.CreateBinaryFile("") if b<>Nil then b.Write image.Buffer b.Close end if else // anything else f=dest.Child(str(Counter)+".tif") if p.CreateImage(f, p.kifmTIFF) then call p.addimage(p.kcfLZW, p.kicNone, image) call p.CloseImage end if end Select next End EventHandler
End Class
Class Window1 Inherits Window
End Class
MenuBar MenuBar1
MenuItem FileMenu = "&File"
MenuItem FileQuit = "#App.kFileQuit"
MenuItem EditMenu = "&Edit"
MenuItem EditUndo = "&Undo"
MenuItem UntitledMenu1 = "-"
MenuItem EditCut = "Cu&t"
MenuItem EditCopy = "&Copy"
MenuItem EditPaste = "&Paste"
MenuItem EditClear = "#App.kEditClear"
MenuItem UntitledMenu0 = "-"
MenuItem EditSelectAll = "Select &All"
End MenuBar
Filetype application/pdf
End MyFileTypes
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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