Package com.inductiveautomation.rm.pdf.reader

Class PDFFile

  • public class PDFFile
extends java.lang.Object
    This class is used to read a PDF file for parsing.

    • Constructor Detail

      • PDFFile

        public PDFFile​(byte[] bytes)
        Creates a new PDF file for the PDF file bytes.

    • Method Detail

      • getVersion

        public float getVersion()
        Gets the pdf version as a float.

      • getPage

        public PDFPage getPage​(int aPageIndex)
        Returns an individual PDF page for the given page index. This function used to create a new instance every time, but it gets called repeatedly by imagereader and pageparser, so half a dozen (at least) page instances were getting created for every pdf import. This of course also defeated any useful caching behavior in the RMPDFPage.

        The file could be hundreds of pages big, and we're most likely only ever looking at one page. Creating a sparse array hundreds of elements large seems silly, so we'll use a map instead.

      • clearPageCache

        public void clearPageCache()
        Clears the page cache.

      • getPageCount

        public int getPageCount()
        Returns the number of PDF pages in the PDF file.

      • inheritedAttributeForKeyInPage

        public java.lang.Object inheritedAttributeForKeyInPage​(java.lang.String aKey,
                                                       java.util.Map aPage)
        Returns x.

      • getXRefTablePosition

        public int getXRefTablePosition()
        PDF reading starts at file end - this routine starts at end and searches backwards until it finds startxref key It returns file offset to the xref table (also checks that a valid EOF is present).

      • getXRefObject

        public java.lang.Object getXRefObject​(PDFXEntry anEntry)
        Returns the object from the xref table, reading it if necessary.

      • resolveObject

        public java.lang.Object resolveObject​(java.lang.Object obj)
        Given an object, check to see if its an indirect reference - if so, resolve the reference.

      • readCompressedEntry

        public java.lang.Object readCompressedEntry​(int ostmNum,
                                            int objIndex)

      • resetXRefTable

        public void resetXRefTable()
        Call this to clear the state of all xref table entries. This will allow objects created while examining the file to get garbage collected.

      • setStripsExtendedGStates

        public void setStripsExtendedGStates​(boolean flag)

      • getFontFactory

        public FontFactory getFontFactory()
        Graphics object creation factories

      • setFontFactory

        public void setFontFactory​(FontFactory f)

      • setPathFactory

        public void setPathFactory​(PathFactory p)

      • setColorFactory

        public void setColorFactory​(ColorFactory c)

      • setImageFactory

        public void setImageFactory​(ImageFactory f)

      • getMarkupHandler

        public PDFMarkupHandler getMarkupHandler()
        The callback handler