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tdegraphics/kooka/ksaneocr.cpp

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/***************************************************************************
ksaneocr.cpp - generic ocr
-------------------
begin : Fri Jun 30 2000
copyright : (C) 2000 by Klaas Freitag
email : freitag@suse.de
***************************************************************************/
/***************************************************************************
* *
* This file may be distributed and/or modified under the terms of the *
* GNU General Public License version 2 as published by the Free Software *
* Foundation and appearing in the file COPYING included in the *
* packaging of this file. *
*
* As a special exception, permission is given to link this program *
* with any version of the KADMOS ocr/icr engine of reRecognition GmbH, *
* Kreuzlingen and distribute the resulting executable without *
* including the source code for KADMOS in the source distribution. *
*
* As a special exception, permission is given to link this program *
* with any edition of TQt, and distribute the resulting executable, *
* without including the source code for TQt in the source distribution. *
* *
***************************************************************************/
/* $Id$ */
#include <kdebug.h>
#include <kmessagebox.h>
#include <kconfig.h>
#include <kapplication.h>
#include <ktempfile.h>
#include <kprocess.h>
#include <stdlib.h>
#include <kspell.h>
#include <kspelldlg.h>
#include <tqfile.h>
#include <tqcolor.h>
#include <stdio.h>
#include <unistd.h>
#include <img_canvas.h>
#include "img_saver.h"
#include "kadmosocr.h"
#include "kocrbase.h"
#include "kocrkadmos.h"
#include "kocrocrad.h"
#include "config.h"
#include "ksaneocr.h"
#include "kocrgocr.h"
#include "kookaimage.h"
#include "kookapref.h"
#include "ocrword.h"
#include <tqtimer.h>
#include <tqregexp.h>
#include <klocale.h>
#include <tqpaintdevice.h>
#include <tqpainter.h>
#include <tqpen.h>
#include <tqbrush.h>
#include <tqfileinfo.h>
/*
* Thread support is disabled here because the kadmos lib seems not to be
* thread save unfortunately. See slotKadmosResult-comments for more information
*/
KSANEOCR::KSANEOCR( TQWidget*, KConfig *cfg ):
m_ocrProcessDia(0L),
daemon(0L),
visibleOCRRunning(false),
m_resultImage(0),
m_imgCanvas(0L),
m_spell(0L),
m_wantKSpell(true),
m_kspellVisible(true),
m_hideDiaWhileSpellcheck(true),
m_spellInitialConfig(0L),
m_parent(0L),
m_ocrCurrLine(0),
m_currHighlight(-1),
m_applyFilter(false),
m_unlinkORF(true)
{
KConfig *konf = KGlobal::config ();
m_ocrEngine = OCRAD;
m_img = 0L;
m_tmpFile = 0L;
if( cfg )
m_hideDiaWhileSpellcheck = cfg->readBoolEntry( HIDE_BASE_DIALOG, true );
/*
* a initial config is needed as a starting point for the config dialog
* but also for ocr without visible dialog.
*/
m_spellInitialConfig = new KSpellConfig( 0L, 0L ,0L, false );
if( konf )
{
/* -- ocr dialog information -- */
konf->setGroup( CFG_GROUP_OCR_DIA );
TQString eng = konf->readEntry(CFG_OCR_ENGINE, "ocrad");
if( eng == "ocrad" )
{
m_ocrEngine = OCRAD;
}
else if( eng == "gocr" )
{
m_ocrEngine = GOCR;
}
#ifdef HAVE_KADMOS
else if( eng == TQString("kadmos") ) m_ocrEngine = KADMOS;
#endif
kdDebug(28000) << "OCR engine is " << eng << endl;
m_unlinkORF = konf->readBoolEntry( CFG_OCR_CLEANUP, true );
}
/* resize m_blocks to size 1 since there is at least one block */
m_blocks.resize(1);
}
KSANEOCR::~KSANEOCR()
{
if( daemon ) {
delete( daemon );
daemon = 0;
}
if ( m_tmpFile )
{
m_tmpFile->setAutoDelete( true );
delete m_tmpFile;
}
if( m_resultImage )
{
delete m_resultImage;
m_resultImage = 0;
}
if( m_img ) delete m_img;
if( m_spellInitialConfig ) delete m_spellInitialConfig;
}
/*
* This slot is called to introduce a new image, usually if the user clicks on a
* new image either in the gallery or on the thumbnailview.
*/
void KSANEOCR::slSetImage(KookaImage *img )
{
if( ! img ) return ;
if( m_img )
delete m_img;
// FIXME: copy all the image is bad.
m_img = new KookaImage(*img);
if( m_ocrProcessDia )
{
m_ocrProcessDia->introduceImage( m_img );
}
m_applyFilter = false;
}
/*
* Request to visualise a line-box in the source image, KADMOS Engine
*/
void KSANEOCR::slLineBox( const TQRect& )
{
if( ! m_img ) return;
}
/*
* starts visual ocr process. Depending on the ocr engine, this function creates
* a new dialog, and shows it.
*/
bool KSANEOCR::startOCRVisible( TQWidget *parent )
{
if( visibleOCRRunning ) return( false );
bool res = true;
m_parent = parent;
if( m_ocrEngine == GOCR )
{
m_ocrProcessDia = new KGOCRDialog ( parent, m_spellInitialConfig );
}
else if( m_ocrEngine == OCRAD )
{
m_ocrProcessDia = new ocradDialog( parent, m_spellInitialConfig );
}
else if( m_ocrEngine == KADMOS )
{
#ifdef HAVE_KADMOS
/*** Kadmos Engine OCR ***/
m_ocrProcessDia = new KadmosDialog( parent, m_spellInitialConfig );
#else
KMessageBox::sorry(0, i18n("This version of Kooka was not compiled with KADMOS support.\n"
"Please select another OCR engine in Kooka's options dialog."));
kdDebug(28000) << "Sorry, this version of Kooka has no KADMOS support" << endl;
#endif /* HAVE_KADMOS */
}
else
{
kdDebug(28000) << "ERR Unknown OCR engine requested!" << endl;
}
/*
* this part is independant from the engine again
*/
if( m_ocrProcessDia )
{
m_ocrProcessDia->setupGui();
m_ocrProcessDia->introduceImage( m_img );
visibleOCRRunning = true;
connect( m_ocrProcessDia, TQT_SIGNAL( user1Clicked()), this, TQT_SLOT( startOCRProcess() ));
connect( m_ocrProcessDia, TQT_SIGNAL( closeClicked()), this, TQT_SLOT( slotClose() ));
connect( m_ocrProcessDia, TQT_SIGNAL( user2Clicked()), this, TQT_SLOT( slotStopOCR() ));
m_ocrProcessDia->show();
}
return( res );
}
/**
* This method should be called by the engine specific finish slots.
* It does the not engine dependant cleanups like re-enabling buttons etc.
*/
void KSANEOCR::finishedOCRVisible( bool success )
{
bool doSpellcheck = m_wantKSpell;
if( m_ocrProcessDia )
{
m_ocrProcessDia->stopOCR();
doSpellcheck = m_ocrProcessDia->wantSpellCheck();
}
if( success )
{
TQString goof = ocrResultText();
emit newOCRResultText(goof);
if( m_imgCanvas )
{
if( m_resultImage != 0 ) delete m_resultImage;
kdDebug(28000) << "Result image name: " << m_ocrResultImage << endl;
m_resultImage = new TQImage( m_ocrResultImage, "BMP" );
kdDebug(28000) << "New result image has dimensions: " << m_resultImage->width() << "x" << m_resultImage->height()<< endl;
/* The image canvas is non-zero. Set it to our image */
m_imgCanvas->newImageHoldZoom( m_resultImage );
m_imgCanvas->setReadOnly(true);
/* now handle double clicks to jump to the word */
m_applyFilter=true;
}
/** now it is time to invoke the dictionary if required **/
emit readOnlyEditor( false );
if( doSpellcheck )
{
m_ocrCurrLine = 0;
/*
* create a new kspell object, based on the config of the base dialog
*/
connect( new KSpell( m_parent, i18n("Kooka OCR Dictionary Check"),
this, TQT_SLOT( slSpellReady(KSpell*)),
m_ocrProcessDia->spellConfig() ),
TQT_SIGNAL( death()), this, TQT_SLOT(slSpellDead()));
}
delete m_ocrProcessDia;
m_ocrProcessDia = 0L;
}
visibleOCRRunning = false;
cleanUpFiles();
kdDebug(28000) << "# ocr finished #" << endl;
}
/*
* starting the spell check on line m_ocrCurrLine if the line exists.
* If not, the function returns.
*/
void KSANEOCR::startLineSpellCheck()
{
if( m_ocrCurrLine < m_ocrPage.size() )
{
m_checkStrings = (m_ocrPage[m_ocrCurrLine]).stringList();
/* In case the checklist is empty, call the result slot immediately */
if( m_checkStrings.count() == 0 )
{
slCheckListDone(false);
return;
}
kdDebug(28000)<< "Wordlist (size " << m_ocrPage[m_ocrCurrLine].count() << ", line " << m_ocrCurrLine << "):" << m_checkStrings.join(", ") << endl;
// if( list.count() > 0 )
m_spell->checkList( &m_checkStrings, m_kspellVisible );
kdDebug(28000)<< "Started!" << endl;
/**
* This call ends in three slots:
* 1. slMisspelling: Hit _before_ the dialog (if any) appears. Time to
* mark the wrong word.
* 2. slSpellCorrected: Hit if the user decided which word to use.
* 3. slCheckListDone: The line is finished. The global counter needs to be
* increased and this function needs to be called again.
**/
}
else
{
kdDebug(28000) << k_funcinfo <<" -- no more lines !" << endl;
m_spell->cleanUp();
}
}
/* User Cancel is called when the user does not really start the
* ocr but uses the cancel-Button to come out of the Dialog */
void KSANEOCR::slotClose()
{
kdDebug(28000) << "closing ocr Dialog" << endl;
if( daemon && daemon->isRunning() )
{
kdDebug(28000) << "Still running - Killing daemon with Sig. 9" << endl;
daemon->kill(9);
}
finishedOCRVisible(false);
}
void KSANEOCR::slotStopOCR()
{
kdDebug(28000) << "closing ocr Dialog" << endl;
if( daemon && daemon->isRunning() )
{
kdDebug(28000) << "Killing daemon with Sig. 9" << endl;
daemon->kill(9);
// that leads to the process being destroyed.
KMessageBox::error(0, i18n("The OCR-process was stopped.") );
}
}
void KSANEOCR::startOCRAD( )
{
ocradDialog *ocrDia = static_cast<ocradDialog*>(m_ocrProcessDia);
m_ocrResultImage = ocrDia->orfUrl();
const TQString cmd = ocrDia->getOCRCmd();
// if( m_ocrResultImage.isEmpty() )
{
/* The url is empty. Start the program to fill up a temp file */
m_ocrResultImage = ImgSaver::tempSaveImage( m_img, "BMP", 8 ); // m_tmpFile->name();
kdDebug(28000) << "The new image name is <" << m_ocrResultImage << ">" << endl;
}
m_ocrImagePBM = ImgSaver::tempSaveImage( m_img, "PBM", 1 );
/* temporar file for orf result */
KTempFile *tmpOrf = new KTempFile( TQString(), ".orf" );
tmpOrf->setAutoDelete( false );
tmpOrf->close();
m_tmpOrfName = TQFile::encodeName(tmpOrf->name());
if( daemon )
{
delete( daemon );
daemon = 0;
}
daemon = new KProcess;
Q_CHECK_PTR(daemon);
*daemon << cmd;
*daemon << TQString("-x");
*daemon << m_tmpOrfName; // the orf result file
*daemon << TQFile::encodeName( m_ocrImagePBM ).data(); // The name of the image
*daemon << TQString("-l");
*daemon << TQString::number( ocrDia->layoutDetectionMode());
KConfig *konf = KGlobal::config ();
KConfigGroupSaver( konf, CFG_GROUP_OCRAD );
TQString format = konf->readEntry( CFG_OCRAD_FORMAT, "utf8");
*daemon << TQString("-F");
*daemon << format;
TQString charset = konf->readEntry( CFG_OCRAD_CHARSET, "iso-8859-15");
*daemon << TQString("-c");
*daemon << charset;
TQString addArgs = konf->readEntry( CFG_OCRAD_EXTRA_ARGUMENTS, TQString() );
if( !addArgs.isEmpty() )
{
kdDebug(28000) << "Setting additional args from config for ocrad: " << addArgs << endl;
*daemon << addArgs;
}
m_ocrResultText = "";
connect(daemon, TQT_SIGNAL(processExited(KProcess *)),
this, TQT_SLOT( ocradExited(KProcess*)));
connect(daemon, TQT_SIGNAL(receivedStdout(KProcess *, char*, int)),
this, TQT_SLOT( ocradStdIn(KProcess*, char*, int)));
connect(daemon, TQT_SIGNAL(receivedStderr(KProcess *, char*, int)),
this, TQT_SLOT( ocradStdErr(KProcess*, char*, int)));
if (!daemon->start(KProcess::NotifyOnExit, KProcess::All))
{
kdDebug(28000) << "Error starting ocrad-daemon!" << endl;
}
else
{
kdDebug(28000) << "Start OK" << endl;
}
delete tmpOrf;
}
void KSANEOCR::ocradExited(KProcess* )
{
kdDebug(28000) << "ocrad exit " << endl;
TQString err;
bool parseRes = true;
if( ! readORF(m_tmpOrfName, err) )
{
KMessageBox::error( m_parent,
i18n("Parsing of the OCR Result File failed:") + err,
i18n("Parse Problem"));
parseRes = false;
}
finishedOCRVisible( parseRes );
}
void KSANEOCR::ocradStdErr(KProcess*, char* buffer, int buflen)
{
TQString errorBuffer = TQString::fromLocal8Bit(buffer, buflen);
kdDebug(28000) << "ocrad says on stderr: " << errorBuffer << endl;
}
void KSANEOCR::ocradStdIn(KProcess*, char* buffer, int buflen)
{
TQString errorBuffer = TQString::fromLocal8Bit(buffer, buflen);
kdDebug(28000) << "ocrad says on stdin: " << errorBuffer << endl;
}
/*
* This slot is fired if the user clicks on the 'Start' button of the GUI, no
* difference which engine is active.
*/
void KSANEOCR::startOCRProcess( void )
{
if( ! m_ocrProcessDia ) return;
/* starting the animation, setting fields disabled */
m_ocrProcessDia->startOCR();
kapp->processEvents();
if( m_ocrEngine == OCRAD )
{
startOCRAD();
}
if( m_ocrEngine == GOCR )
{
/*
* Starting a gocr process
*/
KGOCRDialog *gocrDia = static_cast<KGOCRDialog*>(m_ocrProcessDia);
const TQString cmd = gocrDia->getOCRCmd();
/* Save the image to a temp file */
/**
* Save images formats:
* Black&White: PBM
* Gray: PGM
* Bunt: PPM
*/
TQString format;
if( m_img->depth() == 1 )
format = "PBM";
else if( m_img->isGrayscale() )
format = "PGM";
else
format = "PPM";
TQString tmpFile = ImgSaver::tempSaveImage( m_img, format ); // m_tmpFile->name();
kdDebug(28000) << "Starting GOCR-Command: " << cmd << " on file " << tmpFile
<< ", format " << format << endl;
if( daemon ) {
delete( daemon );
daemon = 0;
}
daemon = new KProcess;
Q_CHECK_PTR(daemon);
m_ocrResultText = "";
connect(daemon, TQT_SIGNAL(processExited(KProcess *)),
this, TQT_SLOT( gocrExited(KProcess*)));
connect(daemon, TQT_SIGNAL(receivedStdout(KProcess *, char*, int)),
this, TQT_SLOT( gocrStdIn(KProcess*, char*, int)));
connect(daemon, TQT_SIGNAL(receivedStderr(KProcess *, char*, int)),
this, TQT_SLOT( gocrStdErr(KProcess*, char*, int)));
TQString opt;
*daemon << TQFile::encodeName(cmd).data();
*daemon << "-x";
*daemon << "-";
if( !( m_img->numColors() > 0 && m_img->numColors() <3 )) /* not a bw-image */
{
*daemon << "-l";
opt.setNum(gocrDia->getGraylevel());
*daemon << opt;
}
*daemon << "-s";
opt.setNum(gocrDia->getSpaceWidth());
*daemon << opt;
*daemon << "-d";
opt.setNum(gocrDia->getDustsize());
*daemon << opt;
// Write an result image
*daemon << "-v";
*daemon << "32";
// Unfortunately this is fixed by gocr.
m_ocrResultImage = "out30.bmp";
*daemon << TQFile::encodeName(tmpFile).data();
m_ocrCurrLine = 0; // Important in gocrStdIn to store the results
if (!daemon->start(KProcess::NotifyOnExit, KProcess::All))
{
kdDebug(28000) << "Error starting daemon!" << endl;
}
else
{
kdDebug(28000) << "Start OK" << endl;
}
}
#ifdef HAVE_KADMOS
if( m_ocrEngine == KADMOS )
{
KadmosDialog *kadDia = static_cast<KadmosDialog*>(m_ocrProcessDia);
kdDebug(28000) << "Starting Kadmos OCR Engine" << endl;
TQString clasPath; /* target where the clasPath is written in */
if( ! kadDia->getSelClassifier( clasPath ) )
{
KMessageBox::error( m_parent,
i18n("The classifier file necessary for OCR cannot be loaded: %1;\n"
"OCR with the KADMOS engine is not possible." ).
arg(clasPath), i18n("KADMOS Installation Problem"));
finishedOCRVisible(false);
return;
}
TQCString c = clasPath.latin1();
kdDebug(28000) << "Using classifier " << c << endl;
m_rep.Init( c );
if( m_rep.kadmosError() ) /* check if kadmos initialised OK */
{
KMessageBox::error( m_parent,
i18n("The KADMOS OCR system could not be started:\n") +
m_rep.getErrorText()+
i18n("\nPlease check the configuration." ),
i18n("KADMOS Failure") );
}
else
{
/** Since initialising succeeded, we start the ocr here **/
m_rep.SetNoiseReduction( kadDia->getNoiseReduction() );
m_rep.SetScaling( kadDia->getAutoScale() );
kdDebug(28000) << "Image size " << m_img->width() << " x " << m_img->height() << endl;
kdDebug(28000) << "Image depth " << m_img->depth() << ", colors: " << m_img->numColors() << endl;
#define USE_KADMOS_FILEOP /* use a save-file for OCR instead of filling the reImage struct manually */
#ifdef USE_KADMOS_FILEOP
m_tmpFile = new KTempFile( TQString(), TQString("bmp"));
m_tmpFile->setAutoDelete( false );
m_tmpFile->close();
TQString tmpFile = m_tmpFile->name();
kdDebug() << "Saving to file " << tmpFile << endl;
m_img->save( tmpFile, "BMP" );
m_rep.SetImage(tmpFile);
#else
m_rep.SetImage(m_img);
#endif
// rep.Recognize();
m_rep.run();
/* Dealing with threads or no threads (using TQT_THREAD_SUPPORT to distinguish)
* If threads are here, the recognition task is started in its own thread. The gui thread
* needs to wait until the recognition thread is finished. Therefore, a timer is fired once
* that calls slotKadmosResult and checks if the recognition task is finished. If it is not,
* a new one-shot-timer is fired in slotKadmosResult. If it is, the OCR result can be
* processed.
* In case the system has no threads, the method start of the recognition engine does not
* return until it is ready, the user has to live with a non responsive gui while
* recognition is performed. The start()-method is implemented as a wrapper to the run()
* method of CRep, which does the recognition job. Instead of pulling up a timer, simply
* the result slot is called if start()=run() has finished. In the result slot, finished()
* is only a dummy always returning true to avoid more preprocessor tags here.
* Hope that works ...
* It does not :( That is why it is not used here. Maybe some day...
*/
}
#ifdef TQT_THREAD_SUPPORT
/* start a timer and wait until it fires. */
TQTimer::singleShot( 500, this, TQT_SLOT( slotKadmosResult() ));
#else
slotKadmosResult();
#endif
}
#endif /* HAVE_KADMOS */
}
/*
* This method is called to check if the kadmos process was already finished, if
* thread support is enabled (check for preprocessor variable TQT_THREAD_SUPPORT)
* The problem is that the kadmos library seems not to be thread stable so thread
* support should not be enabled by default. In case threads are enabled, this slot
* checks if the KADMOS engine is finished already and if not it fires a timer.
*/
void KSANEOCR::slotKadmosResult()
{
#ifdef HAVE_KADMOS
kdDebug(28000) << "check for Recognition finished" << endl;
if( m_rep.finished() )
{
/* The recognition thread is finished. */
kdDebug(28000) << "kadmos is finished." << endl;
m_ocrResultText = "";
if( ! m_rep.kadmosError() )
{
int lines = m_rep.GetMaxLine();
kdDebug(28000) << "Count lines: " << lines << endl;
m_ocrPage.clear();
m_ocrPage.resize( lines );
for( int line = 0; line < m_rep.GetMaxLine(); line++ )
{
// ocrWordList wordList = m_rep.getLineWords(line);
/* call an ocr engine independent method to use the spellbook */
ocrWordList words = m_rep.getLineWords(line);
kdDebug(28000) << "Have " << words.count() << " entries in list" << endl;
m_ocrPage[line]=words;
}
/* show results of ocr */
m_rep.End();
}
finishedOCRVisible( !m_rep.kadmosError() );
}
else
{
/* recognition thread is not yet finished. Wait another half a second. */
TQTimer::singleShot( 500, this, TQT_SLOT( slotKadmosResult() ));
/* Never comes here if no threads exist on the system */
}
#endif /* HAVE_KADMOS */
}
/*
*
*/
void KSANEOCR::gocrExited(KProcess* d)
{
kdDebug(28000) << "daemonExited start !" << endl;
/* Now all the text of gocr is in the member m_ocrResultText. This one must
* be split up now to m_ocrPage. First break up the lines, resize m_ocrPage
* accordingly and than go through every line and create ocrwords for every
* word.
*/
TQStringList lines = TQStringList::split( '\n', m_ocrResultText, true );
m_ocrPage.clear();
m_ocrPage.resize( lines.count() );
kdDebug(28000) << "RESULT " << m_ocrResultText << " was splitted to lines " << lines.count() << endl;
unsigned int lineCnt = 0;
for ( TQStringList::Iterator it = lines.begin(); it != lines.end(); ++it )
{
kdDebug(28000) << "Splitting up line " << *it << endl;
ocrWordList ocrLine;
TQStringList words = TQStringList::split( TQRegExp( "\\s+" ), *it, false );
for ( TQStringList::Iterator itWord = words.begin(); itWord != words.end(); ++itWord )
{
kdDebug(28000) << "Appending to results: " << *itWord << endl;
ocrLine.append( ocrWord( *itWord ));
}
m_ocrPage[lineCnt] = ocrLine;
lineCnt++;
}
kdDebug(28000) << "Finished to split!" << endl;
/* set the result pixmap to the result pix of gocr */
if( ! m_resPixmap.load( m_ocrResultImage ) )
{
kdDebug(28000) << "Can not load result image!" << endl;
}
/* load the gocr result image */
if( m_img ) delete m_img;
m_img = new KookaImage();
m_img->load( "out30.bmp" );
finishedOCRVisible( d->normalExit() );
}
/*
* A sample orf snippet:
*
* # Ocr Results File. Created by GNU ocrad version 0.3pre1
* total blocks 2
* block 1 0 0 560 344
* lines 5
* line 1 chars 10 height 26
* 71 109 17 26;2,'0'1,'o'0
* 93 109 15 26;2,'1'1,'l'0
* 110 109 18 26;1,'2'0
* 131 109 18 26;1,'3'0
* 151 109 19 26;1,'4'0
* 172 109 17 26;1,'5'0
* 193 109 17 26;1,'6'0
* 213 108 17 27;1,'7'0
* 232 109 18 26;1,'8'0
* 253 109 17 26;1,'9'0
* line 2 chars 14 height 27
*
*/
bool KSANEOCR::readORF( const TQString& fileName, TQString& errStr )
{
TQFile file( fileName );
TQRegExp rx;
bool error = false;
/* use a global line number counter here, not the one from the orf. The orf one
* starts at 0 for every block, but we want line-no counting page global here.
*/
unsigned int lineNo = 0;
int blockCnt = 0;
int currBlock = -1;
/* Fetch the numeric version of ocrad */
ocradDialog *ocrDia = static_cast<ocradDialog*>(m_ocrProcessDia);
int ocradVersion = 0;
if( ocrDia )
{
ocradVersion = ocrDia->getNumVersion();
}
/* clear the ocr result page */
m_ocrPage.clear();
kdDebug(28000) << "***** starting to analyse orf at " << fileName << " *****" << endl;
/* some checks on the orf */
TQFileInfo fi( fileName );
if( ! fi.exists() ) {
error = true;
errStr = i18n("The orf %1 does not exist.").arg(fileName);
}
if( ! error && ! fi.isReadable() ) {
error = true;
errStr = i18n("Permission denied on file %1.").arg(fileName);
}
if ( !error && file.open( IO_ReadOnly ) )
{
TQTextStream stream( &file );
TQString line;
TQString recLine; // recognised line
while ( !stream.atEnd() )
{
line = stream.readLine().stripWhiteSpace(); // line of text excluding '\n'
int len = line.length();
if( ! line.startsWith( "#" )) // Comments
{
kdDebug(28000) << "# Line check |" << line << "|" << endl;
if( line.startsWith( "total blocks " ) ) // total count fo blocks, must be first line
{
blockCnt = line.right( len - 13 /* TQString("total blocks ").length() */ ).toInt();
kdDebug(28000) << "Amount of blocks: " << blockCnt << endl;
m_blocks.resize(blockCnt);
}
else if( line.startsWith( "total text blocks " ))
{
blockCnt = line.right( len - 18 /* TQString("total text blocks ").length() */ ).toInt();
kdDebug(28000) << "Amount of blocks (V. 10): " << blockCnt << endl;
m_blocks.resize(blockCnt);
}
else if( line.startsWith( "block ") || line.startsWith( "text block ") )
{
rx.setPattern("^.*block\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)");
if( rx.search( line ) > -1)
{
currBlock = (rx.cap(1).toInt())-1;
kdDebug(28000) << "Setting current block " << currBlock << endl;
TQRect r( rx.cap(2).toInt(), rx.cap(3).toInt(), rx.cap(4).toInt(), rx.cap(5).toInt());
m_blocks[currBlock] = r;
}
else
{
kdDebug(28000) << "WRN: Unknown block line: " << line << endl;
// Not a killing bug
}
}
else if( line.startsWith( "lines " ))
{
int lineCnt = line.right( len - 6 /* TQString("lines ").length() */).toInt();
m_ocrPage.resize(m_ocrPage.size()+lineCnt);
kdDebug(28000) << "Resized ocrPage to linecount " << lineCnt << endl;
}
else if( line.startsWith( "line" ))
{
// line 5 chars 13 height 20
rx.setPattern("^line\\s+(\\d+)\\s+chars\\s+(\\d+)\\s+height\\s+\\d+" );
if( rx.search( line )>-1 )
{
kdDebug(28000) << "RegExp-Result: " << rx.cap(1) << " : " << rx.cap(2) << endl;
int charCount = rx.cap(2).toInt();
ocrWord word;
TQRect brect;
ocrWordList ocrLine;
ocrLine.setBlock(currBlock);
/* Loop over all characters in the line. Every char has it's own line
* defined in the orf file */
kdDebug(28000) << "Found " << charCount << " chars for line " << lineNo << endl;
for( int c=0; c < charCount && !stream.atEnd(); c++ )
{
/* Read one line per character */
TQString charLine = stream.readLine();
int semiPos = charLine.find(';');
if( semiPos == -1 )
{
kdDebug(28000) << "invalid line: " << charLine << endl;
}
else
{
TQString rectStr = charLine.left( semiPos );
TQString results = charLine.remove(0, semiPos+1 );
bool lineErr = false;
// rectStr contains the rectangle info of for the character
// results contains the real result caracter
// find the amount of alternatives.
int altCount = 0;
int h = results.find(','); // search the first comma
if( h > -1 ) {
// kdDebug(28000) << "Results of count search: " << results.left(h) << endl;
altCount = results.left(h).toInt();
results = results.remove( 0, h+1 ).stripWhiteSpace();
} else {
lineErr = true;
}
// kdDebug(28000) << "Results-line after cutting the alter: " << results << endl;
TQChar detectedChar = UndetectedChar;
if( !lineErr )
{
/* take the first alternative only FIXME */
if( altCount > 0 )
detectedChar = results[1];
// kdDebug(28000) << "Found " << altCount << " alternatives for "
// << TQString(detectedChar) << endl;
}
/* Analyse the rectangle */
if( ! lineErr && detectedChar != ' ' )
{
// kdDebug(28000) << "STRING: " << rectStr << "<" << endl;
rx.setPattern( "(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)");
if( rx.search( rectStr ) != -1 )
{
/* unite the rectangles */
TQRect privRect( rx.cap(1).toInt(), rx.cap(2).toInt(),
rx.cap(3).toInt(), rx.cap(4).toInt() );
word.setRect( word.rect() | privRect );
}
else
{
kdDebug(28000) << "ERR: Unable to read rect info for char!" << endl;
lineErr = true;
}
}
if( ! lineErr )
{
/* store word if finished by a space */
if( detectedChar == ' ' )
{
/* add the block offset to the rect of the word */
TQRect r = word.rect();
if( ocradVersion < 10 )
{
TQRect blockRect = m_blocks[currBlock];
r.moveBy( blockRect.x(), blockRect.y());
}
word.setRect( r );
ocrLine.append( word );
word = ocrWord();
}
else
{
word.append( detectedChar );
}
}
}
}
if( !word.isEmpty() )
{
/* add the block offset to the rect of the word */
TQRect r = word.rect();
if( ocradVersion < 10 )
{
TQRect blockRect = m_blocks[currBlock];
r.moveBy( blockRect.x(), blockRect.y());
}
word.setRect( r );
ocrLine.append( word );
}
if( lineNo < m_ocrPage.size() )
{
kdDebug(29000) << "Store result line no " << lineNo << "=\"" <<
ocrLine.first() << "..." << endl;
m_ocrPage[lineNo] = ocrLine;
lineNo++;
}
else
{
kdDebug(28000) << "ERR: line index overflow: " << lineNo << endl;
}
}
else
{
kdDebug(28000) << "ERR: Unknown line found: " << line << endl;
}
}
else
{
kdDebug(29000) << "Unknown line: " << line << endl;
}
} /* is a comment? */
}
file.close();
}
return !error;
}
void KSANEOCR::cleanUpFiles( void )
{
if( m_tmpFile )
{
delete m_tmpFile;
m_tmpFile = 0L;
}
if( ! m_ocrResultImage.isEmpty())
{
kdDebug(28000) << "Unlinking OCR Result image file!" << endl;
unlink(TQFile::encodeName(m_ocrResultImage));
m_ocrResultImage = TQString();
}
if( ! m_ocrImagePBM.isEmpty())
{
kdDebug(28000) << "Unlinking OCR PBM file!" << endl;
unlink( TQFile::encodeName(m_ocrImagePBM));
m_ocrImagePBM = TQString();
}
if( ! m_tmpOrfName.isEmpty() )
{
if( m_unlinkORF )
{
unlink(TQFile::encodeName(m_tmpOrfName));
m_tmpOrfName = TQString();
}
else
{
kdDebug(28000) << "Do NOT unlink temp orf file " << m_tmpOrfName << endl;
}
}
/* Delete the debug images of gocr ;) */
unlink( "out20.bmp" );
}
void KSANEOCR::gocrStdErr(KProcess*, char* buffer, int buflen)
{
TQString errorBuffer = TQString::fromLocal8Bit(buffer, buflen);
kdDebug(28000) << "gocr says: " << errorBuffer << endl;
}
void KSANEOCR::gocrStdIn(KProcess*, char* buffer, int buflen)
{
TQString aux = TQString::fromLocal8Bit(buffer, buflen);
TQRegExp rx( "^\\s*\\d+\\s+\\d+");
if( rx.search( aux ) > -1 )
{
/* calculate ocr progress for gocr */
int progress = rx.capturedTexts()[0].toInt();
int subProgress = rx.capturedTexts()[1].toInt();
// kdDebug(28000) << "Emitting progress: " << progress << endl;
emit ocrProgress( progress, subProgress );
}
else
{
m_ocrResultText += aux;
}
// kdDebug(28000) << aux << endl;
}
/*
* Assemble the result text
*/
TQString KSANEOCR::ocrResultText()
{
TQString res;
const TQString space(" ");
/* start from the back and search the original word to replace it */
TQValueVector<ocrWordList>::iterator pageIt;
for( pageIt = m_ocrPage.begin(); pageIt != m_ocrPage.end(); ++pageIt )
{
/* thats goes over all lines */
TQValueList<ocrWord>::iterator lineIt;
for( lineIt = (*pageIt).begin(); lineIt != (*pageIt).end(); ++lineIt )
{
res += space + *lineIt;
}
res += "\n";
}
kdDebug(28000) << "Returning result String " << res << endl;
return res;
}
/* --------------------------------------------------------------------------------
* event filter to filter the mouse events to the image viewer
*/
void KSANEOCR::setImageCanvas( ImageCanvas *canvas )
{
m_imgCanvas = canvas;
m_imgCanvas->installEventFilter( this );
}
bool KSANEOCR::eventFilter( TQObject *object, TQEvent *event )
{
TQWidget *w = (TQWidget*) object;
if( m_applyFilter && m_imgCanvas && w == m_imgCanvas )
{
if( event->type() == TQEvent::MouseButtonDblClick )
{
TQMouseEvent *mev = TQT_TQMOUSEEVENT(event);
int x = mev->x();
int y = mev->y();
int scale = m_imgCanvas->getScaleFactor();
m_imgCanvas->viewportToContents( mev->x(), mev->y(),
x, y );
kdDebug(28000) << "Clicked to " << x << "/" << y << ", scale " << scale << endl;
if( scale != 100 )
{
// Scale is e.g. 50 that means tha the image is only half of size.
// thus the clicked coords must be multiplied with 2
y = int(double(y)*100/scale);
x = int(double(x)*100/scale);
}
/* now search the word that was clicked on */
TQValueVector<ocrWordList>::iterator pageIt;
int line = 0;
bool valid = false;
ocrWord wordToFind;
for( pageIt = m_ocrPage.begin(); pageIt != m_ocrPage.end(); ++pageIt )
{
TQRect r = (*pageIt).wordListRect();
if( y > r.top() && y < r.bottom() )
{
kdDebug(28000)<< "It is in between " << r.top() << "/" << r.bottom()
<< ", line " << line << endl;
valid = true;
break;
}
line++;
}
/*
* If valid, we have the line into which the user clicked. Now we
* have to find out the actual word
*/
if( valid )
{
valid = false;
/* find the word in the line and mark it */
ocrWordList words = *pageIt;
ocrWordList::iterator wordIt;
for( wordIt = words.begin(); wordIt != words.end() && !valid; ++wordIt )
{
TQRect r = (*wordIt).rect();
if( x > r.left() && x < r.right() )
{
wordToFind = *wordIt;
valid = true;
}
}
}
/*
* if valid, the wordToFind contains the correct word now.
*/
if( valid )
{
kdDebug(28000) << "Found the clicked word " << wordToFind << endl;
emit selectWord( line, wordToFind );
}
return true;
}
}
return false;
}
/* --------------------------------------------------------------------------------
* Spellbook support
*/
/*
* This slot is hit when the checkWord method of KSpell thinks a word is wrong.
* KSpell detects the correction by itself and delivers it in newword here.
* To see all alternatives KSpell proposes, slMissspelling must be used.
*/
void KSANEOCR::slSpellCorrected( const TQString& originalword,
const TQString& newword,
unsigned int pos )
{
kdDebug(28000) << "Corrected: Original Word " << originalword << " was corrected to "
<< newword << ", pos ist " << pos << endl;
kdDebug(28000) << "Dialog state is " << m_spell->dlgResult() << endl;
if( slUpdateWord( m_ocrCurrLine, pos, originalword, newword ) )
{
if( m_imgCanvas && m_currHighlight > -1 )
{
if( m_applyFilter )
m_imgCanvas->removeHighlight( m_currHighlight );
}
else
{
kdDebug(28000) << "No highlighting to remove!" << endl;
}
}
}
void KSANEOCR::slSpellIgnoreWord( const TQString& word )
{
ocrWord ignoreOCRWord;
ignoreOCRWord = ocrWordFromKSpellWord( m_ocrCurrLine, word );
if( ! ignoreOCRWord.isEmpty() )
{
emit ignoreWord( m_ocrCurrLine, ignoreOCRWord );
if( m_imgCanvas && m_currHighlight > -1 )
{
m_imgCanvas->removeHighlight( m_currHighlight );
/* create a new highlight. That will never be removed */
TQBrush brush;
TQPen pen( gray, 1 );
TQRect r = ignoreOCRWord.rect();
r.moveBy(0,2); // a bit offset to the top
if( m_applyFilter )
m_imgCanvas->highlight( r, pen, brush );
}
}
}
ocrWord KSANEOCR::ocrWordFromKSpellWord( int line, const TQString& word )
{
ocrWord resWord;
if( lineValid(line) )
{
ocrWordList words = m_ocrPage[line];
words.findFuzzyIndex( word, resWord );
}
return resWord;
}
bool KSANEOCR::lineValid( int line )
{
bool ret = false;
if( line >= 0 && (uint)line < m_ocrPage.count() )
ret = true;
return ret;
}
void KSANEOCR::slMisspelling( const TQString& originalword, const TQStringList& suggestions,
unsigned int pos )
{
/* for the first try, use the first suggestion */
ocrWord s( suggestions.first());
kdDebug(28000) << "Misspelled: " << originalword << " at position " << pos << endl;
int line = m_ocrCurrLine;
m_currHighlight = -1;
// ocrWord resWord = ocrWordFromKSpellWord( line, originalword );
ocrWordList words = m_ocrPage[line];
ocrWord resWord;
kdDebug(28000) << "Size of wordlist (line " << line << "): " << words.count() << endl;
if( pos < words.count() )
{
resWord = words[pos];
}
if( ! resWord.isEmpty() )
{
TQBrush brush;
brush.setColor( TQColor(red)); // , "Dense4Pattern" );
brush.setStyle( Qt::Dense4Pattern );
TQPen pen( red, 2 );
TQRect r = resWord.rect();
r.moveBy(0,2); // a bit offset to the top
if( m_applyFilter )
m_currHighlight = m_imgCanvas->highlight( r, pen, brush, true );
kdDebug(28000) << "Position ist " << r.x() << ", " << r.y() << ", width: "
<< r.width() << ", height: " << r.height() << endl;
/* draw a line under the word to check */
/* copy the source */
emit repaintOCRResImage();
}
else
{
kdDebug(28000) << "Could not find the ocrword for " << originalword << endl;
}
emit markWordWrong( line, resWord );
}
/*
* This is the global starting point for spell checking of the ocr result.
* After the KSpell object was created in method finishedOCRVisible, this
* slot is called if the KSpell-object feels itself ready for operation.
* Coming into this slot, the spelling starts in a line by line manner
*/
void KSANEOCR::slSpellReady( KSpell *spell )
{
m_spell = spell;
connect ( m_spell, TQT_SIGNAL( misspelling( const TQString&, const TQStringList&,
unsigned int )),
this, TQT_SLOT( slMisspelling(const TQString& ,
const TQStringList& ,
unsigned int )));
connect( m_spell, TQT_SIGNAL( corrected ( const TQString&, const TQString&, unsigned int )),
this, TQT_SLOT( slSpellCorrected( const TQString&, const TQString&, unsigned int )));
connect( m_spell, TQT_SIGNAL( ignoreword( const TQString& )),
this, TQT_SLOT( slSpellIgnoreWord( const TQString& )));
connect( m_spell, TQT_SIGNAL( done(bool)), this, TQT_SLOT(slCheckListDone(bool)));
kdDebug(28000) << "Spellcheck available" << endl;
if( m_ocrProcessDia && m_hideDiaWhileSpellcheck )
m_ocrProcessDia->hide();
emit readOnlyEditor( true );
startLineSpellCheck();
}
/**
* slot called after either the spellcheck finished or the KSpell object found
* out that it does not want to run because of whatever problems came up.
* If it is an KSpell-init problem, the m_spell variable is still zero and
* Kooka pops up a warning.
*/
void KSANEOCR::slSpellDead()
{
if( ! m_spell )
{
kdDebug(28000) << "Spellcheck NOT available" << endl;
/* Spellchecking has not yet been existing, thus there is a base problem with
* spellcheck on this system.
*/
KMessageBox::error( m_parent,
i18n("Spell-checking cannot be started on this system.\n"
"Please check the configuration" ),
i18n("Spell-Check") );
}
else
{
if( m_spell->status() == KSpell::Cleaning )
{
kdDebug(28000) << "KSpell cleans up" << endl;
}
else if( m_spell->status() == KSpell::Finished )
{
kdDebug(28000) << "KSpell finished" << endl;
}
else if( m_spell->status() == KSpell::Error )
{
kdDebug(28000) << "KSpell finished with Errors" << endl;
}
else if( m_spell->status() == KSpell::Crashed )
{
kdDebug(28000) << "KSpell Chrashed" << endl;
}
else
{
kdDebug(28000) << "KSpell finished with unknown state!" << endl;
}
/* save the current config */
delete m_spell;
m_spell = 0L;
/* reset values */
m_checkStrings.clear();
m_ocrCurrLine = 0;
if( m_imgCanvas && m_currHighlight > -1 )
m_imgCanvas->removeHighlight( m_currHighlight );
}
if( m_ocrProcessDia )
m_ocrProcessDia->show();
emit readOnlyEditor( false );
}
/**
* This slot reads the current line from the member m_ocrCurrLine and
* writes the corrected wordlist to the member page word lists
*/
void KSANEOCR::slCheckListDone(bool)
{
/*
* nothing needs to be updated here in the texts, because it is already done
* in the slSpellCorrected slot
*/
/* Check the dialog state here */
if( m_spell->dlgResult() == KS_CANCEL ||
m_spell->dlgResult() == KS_STOP )
{
/* stop processing */
m_spell->cleanUp();
}
else
{
m_ocrCurrLine++;
kdDebug(28000) << "Starting spellcheck from CheckListDone" << endl;
startLineSpellCheck();
}
}
/**
* updates the word at position spellWordIndx in line line to the new word newWord.
* The original word was origWord. This slot is called from slSpellCorrected
*
*/
bool KSANEOCR::slUpdateWord( int line, int spellWordIndx, const TQString& origWord,
const TQString& newWord )
{
bool result = false;
if( lineValid( line ))
{
ocrWordList words = m_ocrPage[line];
kdDebug(28000) << "Updating word " << origWord << " to " << newWord << endl;
if( words.updateOCRWord( words[spellWordIndx] /* origWord */, newWord ) ) // searches for the word and updates
{
result = true;
emit updateWord( line, origWord, newWord );
}
else
kdDebug(28000) << "WRN: Update from " << origWord << " to " << newWord << " failed" << endl;
}
else
{
kdDebug(28000) << "WRN: Line " << line << " no not valid!" << endl;
}
return result;
}
char KSANEOCR::UndetectedChar = '_';
/* -- */
#include "ksaneocr.moc"
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