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PDFTron includes a rich set of controls. They are used by the DocumentActivity and PdfViewCtrlTabHostFragment, and can also be used independently. To learn more about them, please see a detailed list of each component here.
To change the way users interact with annotations, including restricting which annotations can be created and edited, see Customizing annotation and PDF interaction.
To change the way an annotation appears, see the Custom annotation appearance guide.
PDFTron's tools and demo package shown here are completely open source. Any and all changes are possible by editing the source code directly. All source code can be found in
You can also integrate with source code directly in your application for easy code modification as described here: How to integrate the PDFTron libraries from source.
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