pdf2swf/xpdf/PDFDoc.h

   1 //========================================================================
   2 //
   3 // PDFDoc.h
   4 //
   5 // Copyright 1996-2003 Glyph & Cog, LLC
   6 //
   7 //========================================================================
   8
   9 #ifndef PDFDOC_H
  10 #define PDFDOC_H
  11
  12 #include <aconf.h>
  13
  14 #ifdef USE_GCC_PRAGMAS
  15 #pragma interface
  16 #endif
  17
  18 #include <stdio.h>
  19 #include "XRef.h"
  20 #include "Link.h"
  21 #include "Catalog.h"
  22 #include "Page.h"
  23
  24 class GString;
  25 class BaseStream;
  26 class OutputDev;
  27 class Links;
  28 class LinkAction;
  29 class LinkDest;
  30 class Outline;
  31
  32 //------------------------------------------------------------------------
  33 // PDFDoc
  34 //------------------------------------------------------------------------
  35
  36 class PDFDoc {
  37 public:
  38
  39   PDFDoc(GString *fileNameA, GString *ownerPassword = NULL,
  40          GString *userPassword = NULL);
  41   PDFDoc(BaseStream *strA, GString *ownerPassword = NULL,
  42          GString *userPassword = NULL);
  43   ~PDFDoc();
  44
  45   // Was PDF document successfully opened?
  46   GBool isOk() { return ok; }
  47
  48   // Get the error code (if isOk() returns false).
  49   int getErrorCode() { return errCode; }
  50
  51   // Get file name.
  52   GString *getFileName() { return fileName; }
  53
  54   // Get the xref table.
  55   XRef *getXRef() { return xref; }
  56
  57   // Get catalog.
  58   Catalog *getCatalog() { return catalog; }
  59
  60   // Get base stream.
  61   BaseStream *getBaseStream() { return str; }
  62
  63   // Get page parameters.
  64   double getPageWidth(int page)
  65     { return catalog->getPage(page)->getWidth(); }
  66   double getPageHeight(int page)
  67     { return catalog->getPage(page)->getHeight(); }
  68   int getPageRotate(int page)
  69     { return catalog->getPage(page)->getRotate(); }
  70
  71   // Get number of pages.
  72   int getNumPages() { return catalog->getNumPages(); }
  73
  74   // Return the contents of the metadata stream, or NULL if there is
  75   // no metadata.
  76   GString *readMetadata() { return catalog->readMetadata(); }
  77
  78   // Return the structure tree root object.
  79   Object *getStructTreeRoot() { return catalog->getStructTreeRoot(); }
  80
  81   // Display a page.
  82   void displayPage(OutputDev *out, int page, double hDPI, double vDPI,
  83                    int rotate, GBool crop, GBool doLinks,
  84                    GBool (*abortCheckCbk)(void *data) = NULL,
  85                    void *abortCheckCbkData = NULL);
  86
  87   // Display a range of pages.
  88   void displayPages(OutputDev *out, int firstPage, int lastPage,
  89                     double hDPI, double vDPI, int rotate,
  90                     GBool crop, GBool doLinks,
  91                     GBool (*abortCheckCbk)(void *data) = NULL,
  92                     void *abortCheckCbkData = NULL);
  93
  94   // Display part of a page.
  95   void displayPageSlice(OutputDev *out, int page,
  96                         double hDPI, double vDPI,
  97                         int rotate, GBool crop,
  98                         int sliceX, int sliceY, int sliceW, int sliceH,
  99                         GBool (*abortCheckCbk)(void *data) = NULL,
 100                         void *abortCheckCbkData = NULL);
 101
 102   // Find a page, given its object ID.  Returns page number, or 0 if
 103   // not found.
 104   int findPage(int num, int gen) { return catalog->findPage(num, gen); }
 105
 106   // If point <x>,<y> is in a link, return the associated action;
 107   // else return NULL.
 108   LinkAction *findLink(double x, double y)
 109     { return links ? links->find(x, y) : (LinkAction *)NULL; }
 110
 111   // Return true if <x>,<y> is in a link.
 112   GBool onLink(double x, double y) { return links->onLink(x, y); }
 113
 114   // Find a named destination.  Returns the link destination, or
 115   // NULL if <name> is not a destination.
 116   LinkDest *findDest(GString *name)
 117     { return catalog->findDest(name); }
 118
 119 #ifndef DISABLE_OUTLINE
 120   // Return the outline object.
 121   Outline *getOutline() { return outline; }
 122 #endif
 123
 124   // Is the file encrypted?
 125   GBool isEncrypted() { return xref->isEncrypted(); }
 126
 127   // Check various permissions.
 128   GBool okToPrint(GBool ignoreOwnerPW = gFalse)
 129     { return xref->okToPrint(ignoreOwnerPW); }
 130   GBool okToChange(GBool ignoreOwnerPW = gFalse)
 131     { return xref->okToChange(ignoreOwnerPW); }
 132   GBool okToCopy(GBool ignoreOwnerPW = gFalse)
 133     { return xref->okToCopy(ignoreOwnerPW); }
 134   GBool okToAddNotes(GBool ignoreOwnerPW = gFalse)
 135     { return xref->okToAddNotes(ignoreOwnerPW); }
 136
 137   // Is this document linearized?
 138   GBool isLinearized();
 139
 140   // Return the document's Info dictionary (if any).
 141   Object *getDocInfo(Object *obj) { return xref->getDocInfo(obj); }
 142   Object *getDocInfoNF(Object *obj) { return xref->getDocInfoNF(obj); }
 143
 144   // Return the PDF version specified by the file.
 145   double getPDFVersion() { return pdfVersion; }
 146
 147   // Save this file with another name.
 148   GBool saveAs(GString *name);
 149
 150
 151 private:
 152
 153   GBool setup(GString *ownerPassword, GString *userPassword);
 154   void checkHeader();
 155   void getLinks(Page *page);
 156
 157   GString *fileName;
 158   FILE *file;
 159   BaseStream *str;
 160   double pdfVersion;
 161   XRef *xref;
 162   Catalog *catalog;
 163   Links *links;
 164 #ifndef DISABLE_OUTLINE
 165   Outline *outline;
 166 #endif
 167
 168
 169   GBool ok;
 170   int errCode;
 171 };
 172
 173 #endif