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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commit47d455dd55be855e4cc691c32f687f723d9247ee (patch)
tree52e236aaa2576bdb3840ebede26619692fed6d7d /kdvi/dviFile.h
downloadtdegraphics-47d455dd55be855e4cc691c32f687f723d9247ee.tar.gz
tdegraphics-47d455dd55be855e4cc691c32f687f723d9247ee.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdegraphics@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
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+// -*- C++ -*-
+//
+// Class: dviFile
+//
+// Class that represents a DVI file. Part of KDVI - A DVI previewing
+// plugin for kviewshell.
+//
+// (C) 2004--2005 Stefan Kebekus. Distributed under the GPL.
+//
+
+#ifndef _DVIFILE_H
+#define _DVIFILE_H
+
+#include "bigEndianByteReader.h"
+
+#include <qintdict.h>
+#include <qiodevice.h>
+#include <qmemarray.h>
+#include <qstring.h>
+
+class fontPool;
+class pageSize;
+class TeXFontDefinition;
+
+
+class dvifile : public bigEndianByteReader
+{
+ public:
+ /** Makes a deep copy of the old DVI file. */
+ dvifile(const dvifile *old, fontPool *fp );
+ dvifile(const QString& fname, class fontPool* pool);
+
+ ~dvifile();
+
+ fontPool * font_pool;
+ QString filename;
+ QString generatorString;
+ Q_UINT16 total_pages;
+ QMemArray<Q_UINT32> page_offset;
+
+ /** Saves the DVI file. Returns true on success. */
+ bool saveAs(const QString &filename);
+
+ // Returns a pointer to the DVI file's data, or 0 if no data has yet
+ // been allocated.
+ Q_UINT8 * dvi_Data() {return dviData.data();}
+
+ QIODevice::Offset size_of_file;
+ QString errorMsg;
+
+ /** This field is set to zero when the DVI file is constructed, and
+ will be modified during the prescan phase (at this time the
+ prescan code still resides in the dviRenderer class) */
+ Q_UINT16 numberOfExternalPSFiles;
+
+ /** This field is set to zero when the DVI file is constructed, and
+ will be modified during the prescan phase (at this time the
+ prescan code still resides in the dviRenderer class) */
+ Q_UINT16 numberOfExternalNONPSFiles;
+
+ Q_UINT32 beginning_of_postamble;
+
+ /** This flag is set to "true" during the construction of the
+ dvifile, and is never changed afterwards by the dvifile
+ class. It is used in kdvi in conjuction with source-specials:
+ the first time a page with source specials is rendered, KDVI
+ shows an info dialog, and the flag is set to false. That way
+ KDVI ensures that the user is only informed once. */
+ bool sourceSpecialMarker;
+
+ QIntDict<TeXFontDefinition> tn_table;
+
+ /** Returns the number of centimeters per DVI unit in this DVI
+ file. */
+ double getCmPerDVIunit() const {return cmPerDVIunit;}
+
+ /** Returns the magnification of the DVI file, as described in the
+ DVI Standard. */
+ Q_UINT32 getMagnification() const {return _magnification;}
+
+ /** This member is set to zero on construction and can be used by
+ other software to count error messages that were printed when
+ the DVI-file was processed. Suggested application: limit the
+ number of error messages to, say, 25. */
+ Q_UINT8 errorCounter;
+
+ /** Papersize information read from the dvi-File */
+ pageSize *suggestedPageSize;
+
+ /** Sets new DVI data; all old data is erased. EXPERIMENTAL, use
+ with care. */
+ void setNewData(const QMemArray<Q_UINT8>& newData) {dviData = newData;}
+
+ /** Page numbers that appear in a DVI document need not be
+ ordered. Worse, page numbers need not be unique. This method
+ renumbers the pages. */
+ void renumber();
+
+ /** PDF to PS file conversion
+
+ This utility method takes the name of a PDF-file, and attempts to
+ convert it to a PS file. The dvifile internally keeps a list of
+ converted files, to do two thigs:
+
+ - convert files only once.
+
+ - delete all converted files on destruction
+
+ @warning The internal buffer can lead to difficulties if filenames
+ of PDF-files are not unique: if the content of a PDF file is
+ changed and this method is called a second time with the same file
+ name, the method will then NOT convert the file, but simply return
+ the name from the buffer
+
+ @returns The name of the PS file, or QString::null on failure.
+ */
+ QString convertPDFtoPS(const QString &PDFFilename);
+
+ private:
+ /** process_preamble reads the information in the preamble and
+ stores it into global variables for later use. */
+ void process_preamble();
+ void find_postamble();
+ /** read_postamble reads the information in the postamble, storing
+ it into global variables. It also takes care of reading in all
+ of the pixel files for the fonts used in the job. */
+ void read_postamble();
+ void prepare_pages();
+
+
+ /** Offset in DVI file of last page, set in read_postamble(). */
+ Q_UINT32 last_page_offset;
+ Q_UINT32 _magnification;
+
+ double cmPerDVIunit;
+
+ QMemArray<Q_UINT8> dviData;
+
+
+ /** Map of filenames for converted PDF files
+
+ This map contains names of PDF files that were converted to
+ PostScript. The key is the name of the PDF file, the data the name
+ of the associated PS file, or QString::null, if the file could not
+ be converted. The PS files are deleted when the DVI-file is
+ destructed. */
+ QMap<QString, QString> convertedFiles;
+};
+
+#endif //ifndef _DVIFILE_H