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okular/core/document.cpp
Piotr Szymanski 3c689f5b01 - dont crash when generator not initialised 
svn path=/trunk/playground/graphics/oKular/kpdf/; revision=455529
2005-08-31 18:57:37 +00:00

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/***************************************************************************
* Copyright (C) 2004-2005 by Enrico Ros <eros.kde@email.it> *
* Copyright (C) 2004-2005 by Albert Astals Cid <tsdgeos@terra.es> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
***************************************************************************/
// qt/kde/system includes
#include <qdir.h>
#include <qfile.h>
#include <qfileinfo.h>
#include <qimage.h>
#include <qtextstream.h>
#include <qvaluevector.h>
#include <qtimer.h>
#include <qmap.h>
#include <kconfigdialog.h>
#include <kdebug.h>
#include <kimageio.h>
#include <klocale.h>
#include <kfinddialog.h>
#include <kmessagebox.h>
#include <kapplication.h>
#include <kuserprofile.h>
#include <kmimetype.h>
#include <krun.h>
#include <kstandarddirs.h>
#include <klibloader.h>
#include <ktrader.h>
#include <qcombobox.h>
#include <qlabel.h>
// local includes
#include "document.h"
#include "generator.h"
#include "observer.h"
#include "page.h"
#include "link.h"
#include "chooseenginedialog.h"
#include "conf/settings.h"
// structures used internally by KPDFDocument for local variables storage
class AllocatedPixmap;
class RunningSearch;
class KPDFDocumentPrivate
{
public:
// find descriptors, mapped by ID (we handle multiple searches)
QMap< int, RunningSearch * > searches;
// needed because for remote documents docFileName is a local file and
// we want the remote url when the document refers to relativeNames
KURL url;
// cached stuff
QString docFileName;
QString xmlFileName;
// list of the mimetypes 'generator_kimgio' can understand
QStringList kimgioMimes;
// viewport stuff
QValueList< DocumentViewport > viewportHistory;
QValueList< DocumentViewport >::iterator viewportIterator;
DocumentViewport nextDocumentViewport; // see KPDFLink::Goto for an explanation
// observers / requests / allocator stuff
QMap< int, DocumentObserver * > observers;
QValueList< PixmapRequest * > pixmapRequestsStack;
QValueList< AllocatedPixmap * > allocatedPixmapsFifo;
int allocatedPixmapsTotalMemory;
bool warnedOutOfMemory;
// timers (memory checking / info saver)
QTimer * memCheckTimer;
QTimer * saveBookmarksTimer;
};
struct AllocatedPixmap
{
// owner of the page
int id;
int page;
int memory;
// public constructor: initialize data
AllocatedPixmap( int i, int p, int m ) : id( i ), page( p ), memory( m ) {};
};
struct RunningSearch
{
// store search properties
int continueOnPage;
RegularAreaRect continueOnMatch;
QValueList< int > highlightedPages;
// fields related to previous searches (used for 'continueSearch')
QString cachedString;
KPDFDocument::SearchType cachedType;
bool cachedCaseSensitive;
bool cachedViewportMove;
bool cachedNoDialogs;
QColor cachedColor;
};
#define foreachObserver( cmd ) {\
QMap< int, DocumentObserver * >::iterator it=d->observers.begin(), end=d->observers.end();\
for ( ; it != end ; ++ it ) { (*it)-> cmd ; } }
/** KPDFDocument **/
KPDFDocument::KPDFDocument( QDict<Generator> * genList )
: m_loadedGenerators ( genList ), generator( 0 ), d( new KPDFDocumentPrivate )
{
d->allocatedPixmapsTotalMemory = 0;
d->memCheckTimer = 0;
d->saveBookmarksTimer = 0;
d->warnedOutOfMemory = false;
}
KPDFDocument::~KPDFDocument()
{
// delete generator, pages, and related stuff
closeDocument();
// delete the private structure
delete d;
}
bool KPDFDocument::openDocument( const QString & docFile, const KURL & url )
{
// docFile is always local so we can use QFile on it
QFile fileReadTest( docFile );
if ( !fileReadTest.open( IO_ReadOnly ) )
{
d->docFileName = QString::null;
return false;
}
// determine the related "xml document-info" filename
d->url = url;
d->docFileName = docFile;
QString fn = docFile.contains('/') ? docFile.section('/', -1, -1) : docFile;
fn = "kpdf/" + QString::number(fileReadTest.size()) + "." + fn + ".xml";
fileReadTest.close();
d->xmlFileName = locateLocal( "data", fn );
// create the generator based on the file's mimetype
KMimeType::Ptr mime = KMimeType::findByPath( docFile );
if (mime.count()<=0)
return false;
// 0. load Generator
// request only valid non-disabled plugins suitable for the mimetype
QString constraint("([X-KDE-Priority] > 0) and (exist Library)") ;
KTrader::OfferList offers=KTrader::self()->query(mime->name(),"oKular/Generator",constraint, "[X-KDE-Priority]");
if (offers.isEmpty())
{
kdWarning() << "No plugin for '" << mime->name() << "' mimetype." << endl;
return false;
}
int hRank=0;
// best ranked offer search
if (offers.count() > 1 && Settings::chooseGenerators() )
{
ChooseEngineDialog * choose = new ChooseEngineDialog (0,0);
int count=offers.count();
int i;
for (i=0;i<count;i++)
{
choose->engineList->insertItem( offers[i]->property("Name").toString() , i );
}
choose -> description-> setText(
QString("More then one generator found for %1 mimetype, please select which one to use:").arg(mime->name())
);
switch( choose->exec() )
{
case QDialog::Accepted:
hRank=choose->engineList->currentItem();
break;
case QDialog::Rejected:
return false;
break;
}
}
QString propName=offers[hRank]->property("Name").toString();
m_usingCachedGenerator=false;
generator=m_loadedGenerators->take(propName);
if (!generator)
{
KLibLoader *loader = KLibLoader::self();
if (!loader)
{
kdWarning() << "Could not start library loader: '" << loader->lastErrorMessage() << "'." << endl;
return false;
}
KLibrary *lib = loader->globalLibrary( QFile::encodeName( offers[hRank]->library() ) );
if (!lib)
{
kdWarning() << "Could not load '" << lib->fileName() << "' library." << endl;
return false;
}
Generator* (*create_plugin)(KPDFDocument* doc) = ( Generator* (*)(KPDFDocument* doc) ) lib->symbol( "create_plugin" );
generator=create_plugin(this);
if ( !generator )
{
kdWarning() << "Sth broke." << endl;
return false;
}
if ( offers[hRank]->property("[X-KDE-oKularHasInternalSettings]").toBool() )
{
m_loadedGenerators->insert(propName,generator);
m_usingCachedGenerator=true;
}
// end
}
else
{
generator -> setDocument( this );
m_usingCachedGenerator=true;
}
// connect error reporting signals
connect (generator,SIGNAL(error(QString&,int )),this,SIGNAL(error(QString&,int )));
connect (generator,SIGNAL(warning(QString&,int )),this,SIGNAL(warning(QString&,int )));
connect (generator,SIGNAL(notice(QString&,int )),this,SIGNAL(notice(QString&,int )));
// 1. load Document (and set busy cursor while loading)
QApplication::setOverrideCursor( waitCursor );
bool openOk = generator->loadDocument( docFile, pages_vector );
QApplication::restoreOverrideCursor();
if ( !openOk || pages_vector.size() <= 0 )
{
if (!m_usingCachedGenerator)
{
delete generator;
}
generator = 0;
return openOk;
}
// 2. load Additional Data (our bookmarks and metadata) about the document
loadDocumentInfo();
// 3. setup observers inernal lists and data
foreachObserver( notifySetup( pages_vector, true ) );
// 4. set initial page (restoring the page saved in xml if loaded)
DocumentViewport loadedViewport = (*d->viewportIterator);
if ( loadedViewport.pageNumber != -1 )
{
(*d->viewportIterator) = DocumentViewport();
if ( loadedViewport.pageNumber >= (int)pages_vector.size() )
loadedViewport.pageNumber = pages_vector.size() - 1;
}
else
loadedViewport.pageNumber = 0;
setViewport( loadedViewport );
// start bookmark saver timer
if ( !d->saveBookmarksTimer )
{
d->saveBookmarksTimer = new QTimer( this );
connect( d->saveBookmarksTimer, SIGNAL( timeout() ), this, SLOT( saveDocumentInfo() ) );
}
d->saveBookmarksTimer->start( 5 * 60 * 1000 );
// start memory check timer
if ( !d->memCheckTimer )
{
d->memCheckTimer = new QTimer( this );
connect( d->memCheckTimer, SIGNAL( timeout() ), this, SLOT( slotTimedMemoryCheck() ) );
}
d->memCheckTimer->start( 2000 );
if (d->nextDocumentViewport.pageNumber != -1)
{
setViewport(d->nextDocumentViewport);
d->nextDocumentViewport = DocumentViewport();
}
return true;
}
QString KPDFDocument::getXMLFile()
{
if (generator)
return generator->getXMLFile();
return QString::null;
}
void KPDFDocument::setupGUI(KActionCollection* ac, QToolBox* tBox )
{
if (generator)
generator->setupGUI(ac,tBox);
}
void KPDFDocument::closeDocument()
{
// save document info if a document is still opened
if ( generator && pages_vector.size() > 0 )
saveDocumentInfo();
// stop timers
if ( d->memCheckTimer )
d->memCheckTimer->stop();
if ( d->saveBookmarksTimer )
d->saveBookmarksTimer->stop();
if (generator)
generator->freeGUI();
if (!m_usingCachedGenerator)
{
// delete contents generator
delete generator;
}
generator = 0;
d->url = KURL();
// remove requests left in queue
QValueList< PixmapRequest * >::iterator sIt = d->pixmapRequestsStack.begin();
QValueList< PixmapRequest * >::iterator sEnd = d->pixmapRequestsStack.end();
for ( ; sIt != sEnd; ++sIt )
delete *sIt;
d->pixmapRequestsStack.clear();
// send an empty list to observers (to free their data)
foreachObserver( notifySetup( QValueVector< KPDFPage * >(), true ) );
// delete pages and clear 'pages_vector' container
QValueVector< KPDFPage * >::iterator pIt = pages_vector.begin();
QValueVector< KPDFPage * >::iterator pEnd = pages_vector.end();
for ( ; pIt != pEnd; ++pIt )
delete *pIt;
pages_vector.clear();
// clear 'memory allocation' descriptors
QValueList< AllocatedPixmap * >::iterator aIt = d->allocatedPixmapsFifo.begin();
QValueList< AllocatedPixmap * >::iterator aEnd = d->allocatedPixmapsFifo.end();
for ( ; aIt != aEnd; ++aIt )
delete *aIt;
d->allocatedPixmapsFifo.clear();
// clear 'running searches' descriptors
QMap< int, RunningSearch * >::iterator rIt = d->searches.begin();
QMap< int, RunningSearch * >::iterator rEnd = d->searches.end();
for ( ; rIt != rEnd; ++rIt )
delete *rIt;
d->searches.clear();
// reset internal variables
d->viewportHistory.clear();
d->viewportHistory.append( DocumentViewport() );
d->viewportIterator = d->viewportHistory.begin();
d->allocatedPixmapsTotalMemory = 0;
}
void KPDFDocument::addObserver( DocumentObserver * pObserver )
{
// keep the pointer to the observer in a map
d->observers[ pObserver->observerId() ] = pObserver;
// if the observer is added while a document is already opened, tell it
if ( !pages_vector.isEmpty() )
{
pObserver->notifySetup( pages_vector, true );
pObserver->notifyViewportChanged( false /*disables smoothMove*/ );
}
}
void KPDFDocument::slotOrientation( int orientation )
{
if (generator->supportsRotation())
{
generator->setOrientation(pages_vector,orientation);
foreachObserver( notifySetup( pages_vector, true ) );
kdDebug() << "Oreint: " << orientation << endl;
}
}
void KPDFDocument::removeObserver( DocumentObserver * pObserver )
{
// remove observer from the map. it won't receive notifications anymore
if ( d->observers.contains( pObserver->observerId() ) )
{
// free observer's pixmap data
int observerId = pObserver->observerId();
QValueVector<KPDFPage*>::iterator it = pages_vector.begin(), end = pages_vector.end();
for ( ; it != end; ++it )
(*it)->deletePixmap( observerId );
// [MEM] free observer's allocation descriptors
QValueList< AllocatedPixmap * >::iterator aIt = d->allocatedPixmapsFifo.begin();
QValueList< AllocatedPixmap * >::iterator aEnd = d->allocatedPixmapsFifo.end();
while ( aIt != aEnd )
{
AllocatedPixmap * p = *aIt;
if ( p->id == observerId )
{
aIt = d->allocatedPixmapsFifo.remove( aIt );
delete p;
}
else
++aIt;
}
// delete observer entry from the map
d->observers.remove( observerId );
}
}
void KPDFDocument::reparseConfig()
{
// reparse generator config and if something changed clear KPDFPages
if ( generator && generator->reparseConfig() )
{
// invalidate pixmaps
QValueVector<KPDFPage*>::iterator it = pages_vector.begin(), end = pages_vector.end();
for ( ; it != end; ++it )
(*it)->deletePixmapsAndRects();
// [MEM] remove allocation descriptors
QValueList< AllocatedPixmap * >::iterator aIt = d->allocatedPixmapsFifo.begin();
QValueList< AllocatedPixmap * >::iterator aEnd = d->allocatedPixmapsFifo.end();
for ( ; aIt != aEnd; ++aIt )
delete *aIt;
d->allocatedPixmapsFifo.clear();
d->allocatedPixmapsTotalMemory = 0;
// send reload signals to observers
foreachObserver( notifyContentsCleared( DocumentObserver::Pixmap ) );
}
// free memory if in 'low' profile
if ( Settings::memoryLevel() == Settings::EnumMemoryLevel::Low &&
!d->allocatedPixmapsFifo.isEmpty() && !pages_vector.isEmpty() )
cleanupPixmapMemory();
}
bool KPDFDocument::isOpened() const
{
return generator;
}
bool KPDFDocument::handleEvent( QEvent * event )
{
return generator ? generator->handleEvent( event ) : true;
}
bool KPDFDocument::canConfigurePrinter( ) const
{
return generator ? generator->canConfigurePrinter() : false;
}
const DocumentInfo * KPDFDocument::documentInfo() const
{
return generator ? generator->generateDocumentInfo() : NULL;
}
const DocumentSynopsis * KPDFDocument::documentSynopsis() const
{
return generator ? generator->generateDocumentSynopsis() : NULL;
}
const DocumentFonts * KPDFDocument::documentFonts() const
{
return generator ? generator->generateDocumentFonts() : NULL;
}
const KPDFPage * KPDFDocument::page( uint n ) const
{
return ( n < pages_vector.count() ) ? pages_vector[n] : 0;
}
const DocumentViewport & KPDFDocument::viewport() const
{
return (*d->viewportIterator);
}
uint KPDFDocument::currentPage() const
{
return (*d->viewportIterator).pageNumber;
}
uint KPDFDocument::pages() const
{
return pages_vector.size();
}
KURL KPDFDocument::currentDocument() const
{
return d->url;
}
bool KPDFDocument::isAllowed( int flags ) const
{
return generator ? generator->isAllowed( flags ) : false;
}
bool KPDFDocument::supportsSearching() const
{
return generator ? generator->supportsSearching() : false;
}
bool KPDFDocument::supportsRotation() const
{
return generator ? generator->supportsRotation() : false;
}
bool KPDFDocument::historyAtBegin() const
{
return d->viewportIterator == d->viewportHistory.begin();
}
bool KPDFDocument::historyAtEnd() const
{
return d->viewportIterator == --(d->viewportHistory.end());
}
QString KPDFDocument::getMetaData( const QString & key, const QString & option ) const
{
return generator ? generator->getMetaData( key, option ) : QString();
}
void KPDFDocument::requestPixmaps( const QValueList< PixmapRequest * > & requests )
{
if ( !generator )
{
// delete requests..
QValueList< PixmapRequest * >::const_iterator rIt = requests.begin(), rEnd = requests.end();
for ( ; rIt != rEnd; ++rIt )
delete *rIt;
// ..and return
return;
}
// 1. [CLEAN STACK] remove previous requests of requesterID
int requesterID = requests.first()->id;
QValueList< PixmapRequest * >::iterator sIt = d->pixmapRequestsStack.begin(), sEnd = d->pixmapRequestsStack.end();
while ( sIt != sEnd )
{
if ( (*sIt)->id == requesterID )
{
// delete request and remove it from stack
delete *sIt;
sIt = d->pixmapRequestsStack.remove( sIt );
}
else
++sIt;
}
// 2. [ADD TO STACK] add requests to stack
bool threadingDisabled = !Settings::enableThreading();
QValueList< PixmapRequest * >::const_iterator rIt = requests.begin(), rEnd = requests.end();
for ( ; rIt != rEnd; ++rIt )
{
// set the 'page field' (see PixmapRequest) and check if it is valid
PixmapRequest * request = *rIt;
if ( !(request->page = pages_vector[ request->pageNumber ]) )
{
// skip requests referencing an invalid page (must not happen)
delete request;
continue;
}
if ( !request->async )
request->priority = 0;
if ( request->async && threadingDisabled )
request->async = false;
// add request to the 'stack' at the right place
if ( !request->priority )
// add priority zero requests to the top of the stack
d->pixmapRequestsStack.append( request );
else
{
// insert in stack sorted by priority
sIt = d->pixmapRequestsStack.begin();
sEnd = d->pixmapRequestsStack.end();
while ( sIt != sEnd && (*sIt)->priority >= request->priority )
++sIt;
d->pixmapRequestsStack.insert( sIt, request );
}
}
// 3. [START FIRST GENERATION] if <NO>generator is ready, start a new generation,
// or else (if gen is running) it will be started when the new contents will
//come from generator (in requestDone())</NO>
// all handling of requests put into sendGeneratorRequest
// if ( generator->canGeneratePixmap() )
sendGeneratorRequest();
}
void KPDFDocument::requestTextPage( uint page )
{
KPDFPage * kp = pages_vector[ page ];
if ( !generator || !kp )
return;
// Memory management for TextPages
generator->generateSyncTextPage( kp );
}
void KPDFDocument::addPageAnnotation( int page, Annotation * annotation )
{
// find out the page to attach annotation
KPDFPage * kp = pages_vector[ page ];
if ( !generator || !kp )
return;
// add annotation to the page
kp->addAnnotation( annotation );
// notify observers about the change
foreachObserver( notifyPageChanged( page, DocumentObserver::Annotations ) );
}
/* REFERENCE IMPLEMENTATION: better calling setViewport from other code
void KPDFDocument::setNextPage()
{
// advance page and set viewport on observers
if ( (*d->viewportIterator).pageNumber < (int)pages_vector.count() - 1 )
setViewport( DocumentViewport( (*d->viewportIterator).pageNumber + 1 ) );
}
void KPDFDocument::setPrevPage()
{
// go to previous page and set viewport on observers
if ( (*d->viewportIterator).pageNumber > 0 )
setViewport( DocumentViewport( (*d->viewportIterator).pageNumber - 1 ) );
}
*/
void KPDFDocument::setViewportPage( int page, int excludeId, bool smoothMove )
{
// clamp page in range [0 ... numPages-1]
if ( page < 0 )
page = 0;
else if ( page > (int)pages_vector.count() )
page = pages_vector.count() - 1;
// make a viewport from the page and broadcast it
setViewport( DocumentViewport( page ), excludeId, smoothMove );
}
void KPDFDocument::setViewport( const DocumentViewport & viewport, int excludeId, bool smoothMove )
{
// if already broadcasted, don't redo it
DocumentViewport & oldViewport = *d->viewportIterator;
// disabled by enrico on 2005-03-18 (less debug output)
//if ( viewport == oldViewport )
// kdDebug() << "setViewport with the same viewport." << endl;
// set internal viewport taking care of history
if ( oldViewport.pageNumber == viewport.pageNumber || oldViewport.pageNumber == -1 )
{
// if page is unchanged save the viewport at current position in queue
oldViewport = viewport;
}
else
{
// remove elements after viewportIterator in queue
d->viewportHistory.erase( ++d->viewportIterator, d->viewportHistory.end() );
// keep the list to a reasonable size by removing head when needed
if ( d->viewportHistory.count() >= 100 )
d->viewportHistory.pop_front();
// add the item at the end of the queue
d->viewportIterator = d->viewportHistory.append( viewport );
}
// notify change to all other (different from id) observers
QMap< int, DocumentObserver * >::iterator it = d->observers.begin(), end = d->observers.end();
for ( ; it != end ; ++ it )
if ( it.key() != excludeId )
(*it)->notifyViewportChanged( smoothMove );
// [MEM] raise position of currently viewed page in allocation queue
if ( d->allocatedPixmapsFifo.count() > 1 )
{
const int page = viewport.pageNumber;
QValueList< AllocatedPixmap * > viewportPixmaps;
QValueList< AllocatedPixmap * >::iterator aIt = d->allocatedPixmapsFifo.begin();
QValueList< AllocatedPixmap * >::iterator aEnd = d->allocatedPixmapsFifo.end();
while ( aIt != aEnd )
{
if ( (*aIt)->page == page )
{
viewportPixmaps.append( *aIt );
aIt = d->allocatedPixmapsFifo.remove( aIt );
continue;
}
++aIt;
}
if ( !viewportPixmaps.isEmpty() )
d->allocatedPixmapsFifo += viewportPixmaps;
}
}
void KPDFDocument::setPrevViewport()
// restore viewport from the history
{
if ( d->viewportIterator != d->viewportHistory.begin() )
{
// restore previous viewport and notify it to observers
--d->viewportIterator;
foreachObserver( notifyViewportChanged( true ) );
}
}
void KPDFDocument::setNextViewport()
// restore next viewport from the history
{
QValueList< DocumentViewport >::iterator nextIterator = d->viewportIterator;
++nextIterator;
if ( nextIterator != d->viewportHistory.end() )
{
// restore next viewport and notify it to observers
++d->viewportIterator;
foreachObserver( notifyViewportChanged( true ) );
}
}
bool KPDFDocument::searchText( int searchID, const QString & text, bool fromStart, bool caseSensitive,
SearchType type, bool moveViewport, const QColor & color, bool noDialogs )
{
// safety checks: don't perform searches on empty or unsearchable docs
if ( !generator || !generator->supportsSearching() || pages_vector.isEmpty() )
return false;
// if searchID search not recorded, create new descriptor and init params
if ( !d->searches.contains( searchID ) )
{
RunningSearch * search = new RunningSearch();
search->continueOnPage = -1;
d->searches[ searchID ] = search;
}
RunningSearch * s = d->searches[ searchID ];
// update search stucture
bool newText = text != s->cachedString;
s->cachedString = text;
s->cachedType = type;
s->cachedCaseSensitive = caseSensitive;
s->cachedViewportMove = moveViewport;
s->cachedNoDialogs = noDialogs;
s->cachedColor = color;
// global data for search
bool foundAMatch = false;
QValueList< int > pagesToNotify;
// remove highlights from pages and queue them for notifying changes
pagesToNotify += s->highlightedPages;
QValueList< int >::iterator it = s->highlightedPages.begin(), end = s->highlightedPages.end();
for ( ; it != end; ++it )
pages_vector[ *it ]->deleteHighlights( searchID );
s->highlightedPages.clear();
// set hourglass cursor
QApplication::setOverrideCursor( waitCursor );
// 1. ALLDOC - proces all document marking pages
if ( type == AllDoc )
{
// search and highlight 'text' (as a solid phrase) on all pages
QValueVector< KPDFPage * >::iterator it = pages_vector.begin(), end = pages_vector.end();
for ( ; it != end; ++it )
{
// get page (from the first to the last)
KPDFPage * page = *it;
int pageNumber = page->number();
// request search page if needed
if ( !page->hasSearchPage() )
requestTextPage( pageNumber );
// loop on a page adding highlights for all found items
bool addedHighlights = false;
RegularAreaRect * lastMatch = 0;
while ( 1 )
{
if ( lastMatch )
lastMatch = page->findText( text, NextRes , caseSensitive, lastMatch);
else
lastMatch = page->findText( text, FromTop, caseSensitive);
if ( !lastMatch )
break;
// add highligh rect to the page
page->setHighlight( searchID, lastMatch, color );
addedHighlights = true;
}
// if added highlights, udpate internals and queue page for notify
if ( addedHighlights )
{
foundAMatch = true;
s->highlightedPages.append( pageNumber );
if ( !pagesToNotify.contains( pageNumber ) )
pagesToNotify.append( pageNumber );
}
}
// reset cursor to previous shape
QApplication::restoreOverrideCursor();
// send page lists if found anything new
//if ( foundAMatch ) ?maybe?
foreachObserver( notifySetup( pages_vector, false ) );
}
// 2. NEXTMATCH - find next matching item (or start from top)
else if ( type == NextMatch )
{
// find out from where to start/resume search from
int viewportPage = (*d->viewportIterator).pageNumber;
int currentPage = fromStart ? 0 : ((s->continueOnPage != -1) ? s->continueOnPage : viewportPage);
KPDFPage * lastPage = fromStart ? 0 : pages_vector[ currentPage ];
// continue checking last SearchPage first (if it is the current page)
RegularAreaRect * match = 0;
if ( lastPage && lastPage->number() == s->continueOnPage )
{
if ( newText )
match = lastPage->findText( text, FromTop , caseSensitive);
else
match = lastPage->findText( text, NextRes, caseSensitive,&s->continueOnMatch );
if ( !match )
currentPage++;
}
// if no match found, loop through the whole doc, starting from currentPage
if ( !match )
{
const int pageCount = pages_vector.count();
for ( int i = 0; i < pageCount; i++ )
{
if ( currentPage >= pageCount )
{
if ( noDialogs || KMessageBox::questionYesNo(0, i18n("End of document reached.\nContinue from the beginning?")) == KMessageBox::Yes )
currentPage = 0;
else
break;
}
// get page
KPDFPage * page = pages_vector[ currentPage ];
// request search page if needed
if ( !page->hasSearchPage() )
requestTextPage( page->number() );
// if found a match on the current page, end the loop
if ( (match = page->findText( text, FromTop, caseSensitive )) )
break;
currentPage++;
}
}
// reset cursor to previous shape
QApplication::restoreOverrideCursor();
// if a match has been found..
if ( match )
{
// update the RunningSearch structure adding this match..
foundAMatch = true;
s->continueOnPage = currentPage;
s->continueOnMatch = *match;
s->highlightedPages.append( currentPage );
// ..add highlight to the page..
pages_vector[ currentPage ]->setHighlight( searchID, match, color );
// ..queue page for notifying changes..
if ( !pagesToNotify.contains( currentPage ) )
pagesToNotify.append( currentPage );
// ..move the viewport to show the first of the searched word sequence centered
if ( moveViewport )
{
DocumentViewport searchViewport( currentPage );
searchViewport.rePos.enabled = true;
searchViewport.rePos.normalizedX = (match->first()->left + match->first()->right) / 2.0;
searchViewport.rePos.normalizedY = (match->first()->top + match->first()->bottom) / 2.0;
setViewport( searchViewport, -1, true );
}
}
else if ( !noDialogs )
KMessageBox::information( 0, i18n("No matches found for '%1'.").arg( text ) );
}
// 3. PREVMATCH //TODO
else if ( type == PrevMatch )
{
}
// 4. GOOGLE* - process all document marking pages
else if ( type == GoogleAll || type == GoogleAny )
{
// search and highlight every word in 'text' on all pages
bool matchAll = type == GoogleAll;
QStringList words = QStringList::split( " ", text );
int wordsCount = words.count(),
hueStep = (wordsCount > 1) ? (60 / (wordsCount - 1)) : 60,
baseHue, baseSat, baseVal;
color.getHsv( &baseHue, &baseSat, &baseVal );
QValueVector< KPDFPage * >::iterator it = pages_vector.begin(), end = pages_vector.end();
for ( ; it != end; ++it )
{
// get page (from the first to the last)
KPDFPage * page = *it;
int pageNumber = page->number();
// request search page if needed
if ( !page->hasSearchPage() )
requestTextPage( pageNumber );
// loop on a page adding highlights for all found items
bool allMatched = wordsCount > 0,
anyMatched = false;
for ( int w = 0; w < wordsCount; w++ )
{
QString word = words[ w ];
int newHue = baseHue - w * hueStep;
if ( newHue < 0 )
newHue += 360;
QColor wordColor = QColor( newHue, baseSat, baseVal, QColor::Hsv );
RegularAreaRect * lastMatch = 0;
// add all highlights for current word
bool wordMatched = false;
while ( 1 )
{
if ( lastMatch )
lastMatch = page->findText( word, NextRes, caseSensitive, lastMatch );
else
lastMatch = page->findText( word, FromTop, caseSensitive);
if ( !lastMatch )
break;
// add highligh rect to the page
page->setHighlight( searchID, lastMatch, wordColor );
wordMatched = true;
}
allMatched = allMatched && wordMatched;
anyMatched = anyMatched || wordMatched;
}
// if not all words are present in page, remove partial highlights
if ( !allMatched && matchAll )
page->deleteHighlights( searchID );
// if page contains all words, udpate internals and queue page for notify
if ( (allMatched && matchAll) || (anyMatched && !matchAll) )
{
foundAMatch = true;
s->highlightedPages.append( pageNumber );
if ( !pagesToNotify.contains( pageNumber ) )
pagesToNotify.append( pageNumber );
}
}
// reset cursor to previous shape
QApplication::restoreOverrideCursor();
// send page lists to update observers (since some filter on bookmarks)
foreachObserver( notifySetup( pages_vector, false ) );
}
// notify observers about highlights changes
QValueList< int >::iterator nIt = pagesToNotify.begin(), nEnd = pagesToNotify.end();
for ( ; nIt != nEnd; ++nIt )
foreachObserver( notifyPageChanged( *nIt, DocumentObserver::Highlights ) );
// return if search has found one or more matches
return foundAMatch;
}
bool KPDFDocument::continueSearch( int searchID )
{
// check if searchID is present in runningSearches
if ( !d->searches.contains( searchID ) )
return false;
// start search with cached parameters from last search by searchID
RunningSearch * p = d->searches[ searchID ];
return searchText( searchID, p->cachedString, false, p->cachedCaseSensitive,
p->cachedType, p->cachedViewportMove, p->cachedColor,
p->cachedNoDialogs );
}
void KPDFDocument::resetSearch( int searchID )
{
// check if searchID is present in runningSearches
if ( !d->searches.contains( searchID ) )
return;
// get previous parameters for search
RunningSearch * s = d->searches[ searchID ];
// unhighlight pages and inform observers about that
QValueList< int >::iterator it = s->highlightedPages.begin(), end = s->highlightedPages.end();
for ( ; it != end; ++it )
{
int pageNumber = *it;
pages_vector[ pageNumber ]->deleteHighlights( searchID );
foreachObserver( notifyPageChanged( pageNumber, DocumentObserver::Highlights ) );
}
// send the setup signal too (to update views that filter on matches)
foreachObserver( notifySetup( pages_vector, false ) );
// remove serch from the runningSearches list and delete it
d->searches.remove( searchID );
delete s;
}
void KPDFDocument::toggleBookmark( int n )
{
KPDFPage * page = ( n < (int)pages_vector.count() ) ? pages_vector[ n ] : 0;
if ( page )
{
page->setBookmark( !page->hasBookmark() );
foreachObserver( notifyPageChanged( n, DocumentObserver::Bookmark ) );
}
}
void KPDFDocument::processLink( const KPDFLink * link )
{
if ( !link )
return;
switch( link->linkType() )
{
case KPDFLink::Goto: {
const KPDFLinkGoto * go = static_cast< const KPDFLinkGoto * >( link );
d->nextDocumentViewport = go->destViewport();
// Explanation of why d->nextDocumentViewport is needed:
// all openRelativeFile does is launch a signal telling we
// want to open another URL, the problem is that when the file is
// non local, the loading is done assynchronously so you can't
// do a setViewport after the if as it was because you are doing the setViewport
// on the old file and when the new arrives there is no setViewport for it and
// it does not show anything
// first open filename if link is pointing outside this document
if ( go->isExternal() && !openRelativeFile( go->fileName() ) )
{
kdWarning() << "Link: Error opening '" << go->fileName() << "'." << endl;
return;
}
else
{
// skip local links that point to nowhere (broken ones)
if (d->nextDocumentViewport.pageNumber == -1)
return;
setViewport( d->nextDocumentViewport, -1, true );
d->nextDocumentViewport = DocumentViewport();
}
} break;
case KPDFLink::Execute: {
const KPDFLinkExecute * exe = static_cast< const KPDFLinkExecute * >( link );
QString fileName = exe->fileName();
if ( fileName.endsWith( ".pdf" ) || fileName.endsWith( ".PDF" ) )
{
openRelativeFile( fileName );
return;
}
// Albert: the only pdf i have that has that kind of link don't define
// an application and use the fileName as the file to open
fileName = giveAbsolutePath( fileName );
KMimeType::Ptr mime = KMimeType::findByPath( fileName );
// Check executables
if ( KRun::isExecutableFile( fileName, mime->name() ) )
{
// Don't have any pdf that uses this code path, just a guess on how it should work
if ( !exe->parameters().isEmpty() )
{
fileName = giveAbsolutePath( exe->parameters() );
mime = KMimeType::findByPath( fileName );
if ( KRun::isExecutableFile( fileName, mime->name() ) )
{
// this case is a link pointing to an executable with a parameter
// that also is an executable, possibly a hand-crafted pdf
KMessageBox::information( 0, i18n("The pdf file is trying to execute an external application and for your safety kpdf does not allow that.") );
return;
}
}
else
{
// this case is a link pointing to an executable with no parameters
// core developers find unacceptable executing it even after asking the user
KMessageBox::information( 0, i18n("The pdf file is trying to execute an external application and for your safety kpdf does not allow that.") );
return;
}
}
KService::Ptr ptr = KServiceTypeProfile::preferredService( mime->name(), "Application" );
if ( ptr )
{
KURL::List lst;
lst.append( fileName );
KRun::run( *ptr, lst );
}
else
KMessageBox::information( 0, i18n( "No application found for opening file of mimetype %1." ).arg( mime->name() ) );
} break;
case KPDFLink::Action: {
const KPDFLinkAction * action = static_cast< const KPDFLinkAction * >( link );
switch( action->actionType() )
{
case KPDFLinkAction::PageFirst:
setViewportPage( 0 );
break;
case KPDFLinkAction::PagePrev:
if ( (*d->viewportIterator).pageNumber > 0 )
setViewportPage( (*d->viewportIterator).pageNumber - 1 );
break;
case KPDFLinkAction::PageNext:
if ( (*d->viewportIterator).pageNumber < (int)pages_vector.count() - 1 )
setViewportPage( (*d->viewportIterator).pageNumber + 1 );
break;
case KPDFLinkAction::PageLast:
setViewportPage( pages_vector.count() - 1 );
break;
case KPDFLinkAction::HistoryBack:
setPrevViewport();
break;
case KPDFLinkAction::HistoryForward:
setNextViewport();
break;
case KPDFLinkAction::Quit:
kapp->quit();
break;
case KPDFLinkAction::Presentation:
emit linkPresentation();
break;
case KPDFLinkAction::EndPresentation:
emit linkEndPresentation();
break;
case KPDFLinkAction::Find:
emit linkFind();
break;
case KPDFLinkAction::GoToPage:
emit linkGoToPage();
break;
}
} break;
case KPDFLink::Browse: {
const KPDFLinkBrowse * browse = static_cast< const KPDFLinkBrowse * >( link );
// if the url is a mailto one, invoke mailer
if ( browse->url().startsWith( "mailto:", false ) )
kapp->invokeMailer( browse->url() );
else
{
QString url = browse->url();
// fix for #100366, documents with relative links that are the form of http:foo.pdf
if (url.find("http:") == 0 && url.find("http://") == -1 && url.right(4) == ".pdf")
{
openRelativeFile(url.mid(5));
return;
}
// get service for web browsing
KService::Ptr ptr = KServiceTypeProfile::preferredService("text/html", "Application");
KURL::List lst;
// append 'url' parameter to the service and run it
lst.append( url );
KRun::run( *ptr, lst );
}
} break;
case KPDFLink::Movie:
//const KPDFLinkMovie * browse = static_cast< const KPDFLinkMovie * >( link );
// TODO this (Movie link)
break;
}
}
bool KPDFDocument::print( KPrinter &printer )
{
return generator ? generator->print( printer ) : false;
}
void KPDFDocument::requestDone( PixmapRequest * req )
{
#ifndef NDEBUG
if ( !generator->canGeneratePixmap( req->async ) )
kdDebug() << "requestDone with generator not in READY state." << endl;
#endif
// [MEM] 1.1 find and remove a previous entry for the same page and id
QValueList< AllocatedPixmap * >::iterator aIt = d->allocatedPixmapsFifo.begin();
QValueList< AllocatedPixmap * >::iterator aEnd = d->allocatedPixmapsFifo.end();
for ( ; aIt != aEnd; ++aIt )
if ( (*aIt)->page == req->pageNumber && (*aIt)->id == req->id )
{
AllocatedPixmap * p = *aIt;
d->allocatedPixmapsFifo.remove( aIt );
d->allocatedPixmapsTotalMemory -= p->memory;
delete p;
break;
}
// [MEM] 1.2 append memory allocation descriptor to the FIFO
int memoryBytes = 4 * req->width * req->height;
AllocatedPixmap * memoryPage = new AllocatedPixmap( req->id, req->pageNumber, memoryBytes );
d->allocatedPixmapsFifo.append( memoryPage );
d->allocatedPixmapsTotalMemory += memoryBytes;
// 2. notify an observer that its pixmap changed
if ( d->observers.contains( req->id ) )
d->observers[ req->id ]->notifyPageChanged( req->pageNumber, DocumentObserver::Pixmap );
// 3. delete request
delete req;
// 4. start a new generation if some is pending
if ( !d->pixmapRequestsStack.isEmpty() )
sendGeneratorRequest();
}
void KPDFDocument::sendGeneratorRequest()
{
// find a request
PixmapRequest * request = 0;
while ( !d->pixmapRequestsStack.isEmpty() && !request )
{
PixmapRequest * r = d->pixmapRequestsStack.last();
// request only if page isn't already present
if ( r->page->hasPixmap( r->id, r->width, r->height ) )
{
d->pixmapRequestsStack.pop_back();
delete r;
}
else if ( (long)r->width * (long)r->height > 20000000L )
{
d->pixmapRequestsStack.pop_back();
delete r;
if ( !d->warnedOutOfMemory )
{
kdWarning() << "Running out of memory on page " << r->pageNumber
<< " (" << r->width << "x" << r->height << " px);" << endl;
kdWarning() << "this message will be reported only once." << endl;
d->warnedOutOfMemory = true;
}
}
else if (!r)
{
d->pixmapRequestsStack.pop_back();
}
else
request = r;
}
// if no request found (or already generated), return
if ( !request )
return;
// [MEM] preventive memory freeing
int pixmapBytes = 4 * request->width * request->height;
if ( pixmapBytes > (1024 * 1024) )
cleanupPixmapMemory( pixmapBytes );
// submit the request to the generator
if ( generator->canGeneratePixmap( request->async ) )
{
d->pixmapRequestsStack.remove ( request );
generator->generatePixmap ( request );
}
else
QTimer::singleShot( 20, this, SLOT(sendGeneratorRequest()) );
}
void KPDFDocument::cleanupPixmapMemory( int /*sure? bytesOffset*/ )
{
// [MEM] choose memory parameters based on configuration profile
int clipValue = -1;
int memoryToFree = -1;
switch ( Settings::memoryLevel() )
{
case Settings::EnumMemoryLevel::Low:
memoryToFree = d->allocatedPixmapsTotalMemory;
break;
case Settings::EnumMemoryLevel::Normal:
memoryToFree = d->allocatedPixmapsTotalMemory - getTotalMemory() / 3;
clipValue = (d->allocatedPixmapsTotalMemory - getFreeMemory()) / 2;
break;
case Settings::EnumMemoryLevel::Aggressive:
clipValue = (d->allocatedPixmapsTotalMemory - getFreeMemory()) / 2;
break;
}
if ( clipValue > memoryToFree )
memoryToFree = clipValue;
if ( memoryToFree > 0 )
{
// [MEM] free memory starting from older pixmaps
int pagesFreed = 0;
QValueList< AllocatedPixmap * >::iterator pIt = d->allocatedPixmapsFifo.begin();
QValueList< AllocatedPixmap * >::iterator pEnd = d->allocatedPixmapsFifo.end();
while ( (pIt != pEnd) && (memoryToFree > 0) )
{
AllocatedPixmap * p = *pIt;
if ( d->observers[ p->id ]->canUnloadPixmap( p->page ) )
{
// update internal variables
pIt = d->allocatedPixmapsFifo.remove( pIt );
d->allocatedPixmapsTotalMemory -= p->memory;
memoryToFree -= p->memory;
pagesFreed++;
// delete pixmap
pages_vector[ p->page ]->deletePixmap( p->id );
// delete allocation descriptor
delete p;
} else
++pIt;
}
//p--rintf("freeMemory A:[%d -%d = %d] \n", d->allocatedPixmapsFifo.count() + pagesFreed, pagesFreed, d->allocatedPixmapsFifo.count() );
}
}
int KPDFDocument::getTotalMemory()
{
static int cachedValue = 0;
if ( cachedValue )
return cachedValue;
#ifdef __linux__
// if /proc/meminfo doesn't exist, return 128MB
QFile memFile( "/proc/meminfo" );
if ( !memFile.open( IO_ReadOnly ) )
return (cachedValue = 134217728);
// read /proc/meminfo and sum up the contents of 'MemFree', 'Buffers'
// and 'Cached' fields. consider swapped memory as used memory.
QTextStream readStream( &memFile );
while ( !readStream.atEnd() )
{
QString entry = readStream.readLine();
if ( entry.startsWith( "MemTotal:" ) )
return (cachedValue = (1024 * entry.section( ' ', -2, -2 ).toInt()));
}
#endif
return (cachedValue = 134217728);
}
int KPDFDocument::getFreeMemory()
{
#ifdef __linux__
// if /proc/meminfo doesn't exist, return MEMORY FULL
QFile memFile( "/proc/meminfo" );
if ( !memFile.open( IO_ReadOnly ) )
return 0;
// read /proc/meminfo and sum up the contents of 'MemFree', 'Buffers'
// and 'Cached' fields. consider swapped memory as used memory.
int memoryFree = 0;
QString entry;
QTextStream readStream( &memFile );
while ( !readStream.atEnd() )
{
entry = readStream.readLine();
if ( entry.startsWith( "MemFree:" ) ||
entry.startsWith( "Buffers:" ) ||
entry.startsWith( "Cached:" ) ||
entry.startsWith( "SwapFree:" ) )
memoryFree += entry.section( ' ', -2, -2 ).toInt();
if ( entry.startsWith( "SwapTotal:" ) )
memoryFree -= entry.section( ' ', -2, -2 ).toInt();
}
memFile.close();
return 1024 * memoryFree;
#else
// tell the memory is full.. will act as in LOW profile
return 0;
#endif
}
void KPDFDocument::loadDocumentInfo()
// note: load data and stores it internally (document or pages). observers
// are still uninitialized at this point so don't access them
{
//kdDebug() << "Using '" << d->xmlFileName << "' as document info file." << endl;
QFile infoFile( d->xmlFileName );
if ( !infoFile.exists() || !infoFile.open( IO_ReadOnly ) )
return;
// Load DOM from XML file
QDomDocument doc( "documentInfo" );
if ( !doc.setContent( &infoFile ) )
{
kdDebug() << "Can't load XML pair! Check for broken xml." << endl;
infoFile.close();
return;
}
infoFile.close();
QDomElement root = doc.documentElement();
if ( root.tagName() != "documentInfo" )
return;
// Parse the DOM tree
QDomNode topLevelNode = root.firstChild();
while ( topLevelNode.isElement() )
{
QString catName = topLevelNode.toElement().tagName();
// Restore page attributes (bookmark, annotations, ...) from the DOM
if ( catName == "pageList" )
{
QDomNode pageNode = topLevelNode.firstChild();
while ( pageNode.isElement() )
{
QDomElement pageElement = pageNode.toElement();
if ( pageElement.hasAttribute( "number" ) )
{
// get page number (node's attribute)
bool ok;
int pageNumber = pageElement.attribute( "number" ).toInt( &ok );
// pass the domElement to the right page, to read config data from
if ( ok && pageNumber >= 0 && pageNumber < (int)pages_vector.count() )
pages_vector[ pageNumber ]->restoreLocalContents( pageElement );
}
pageNode = pageNode.nextSibling();
}
}
// Restore 'general info' from the DOM
else if ( catName == "generalInfo" )
{
QDomNode infoNode = topLevelNode.firstChild();
while ( infoNode.isElement() )
{
QDomElement infoElement = infoNode.toElement();
// compatibility: [pre-3.4 viewport storage] @remove after 3.4 relase
if ( infoElement.tagName() == "activePage" )
{
if ( infoElement.hasAttribute( "viewport" ) )
*d->viewportIterator = DocumentViewport( infoElement.attribute( "viewport" ) );
}
// restore viewports history
if ( infoElement.tagName() == "history" )
{
// clear history
d->viewportHistory.clear();
// append old viewports
QDomNode historyNode = infoNode.firstChild();
while ( historyNode.isElement() )
{
QDomElement historyElement = historyNode.toElement();
if ( historyElement.hasAttribute( "viewport" ) )
{
QString vpString = historyElement.attribute( "viewport" );
d->viewportIterator = d->viewportHistory.append(
DocumentViewport( vpString ) );
}
historyNode = historyNode.nextSibling();
}
// consistancy check
if ( d->viewportHistory.isEmpty() )
d->viewportIterator = d->viewportHistory.append( DocumentViewport() );
}
infoNode = infoNode.nextSibling();
}
}
topLevelNode = topLevelNode.nextSibling();
} // </documentInfo>
}
QString KPDFDocument::giveAbsolutePath( const QString & fileName )
{
if ( !d->url.isValid() )
return QString::null;
return d->url.upURL().url() + fileName;
}
bool KPDFDocument::openRelativeFile( const QString & fileName )
{
QString absFileName = giveAbsolutePath( fileName );
if ( absFileName.isNull() )
return false;
kdDebug() << "openDocument: '" << absFileName << "'" << endl;
emit openURL( absFileName );
return true;
}
void KPDFDocument::saveDocumentInfo() const
{
if ( d->docFileName.isNull() )
return;
QFile infoFile( d->xmlFileName );
if (infoFile.open( IO_WriteOnly | IO_Truncate) )
{
// 1. Create DOM
QDomDocument doc( "documentInfo" );
QDomElement root = doc.createElement( "documentInfo" );
doc.appendChild( root );
// 2.1. Save page attributes (bookmark state, annotations, ... ) to DOM
QDomElement pageList = doc.createElement( "pageList" );
root.appendChild( pageList );
// <page list><page number='x'>.... </page> save pages that hold data
QValueVector< KPDFPage * >::const_iterator pIt = pages_vector.begin(), pEnd = pages_vector.end();
for ( ; pIt != pEnd; ++pIt )
(*pIt)->saveLocalContents( pageList, doc );
// 2.2. Save document info (current viewport, history, ... ) to DOM
QDomElement generalInfo = doc.createElement( "generalInfo" );
root.appendChild( generalInfo );
// <general info><history> ... </history> save history up to 10 viewports
QValueList< DocumentViewport >::iterator backIterator = d->viewportIterator;
if ( backIterator != d->viewportHistory.end() )
{
// go back up to 10 steps from the current viewportIterator
int backSteps = 10;
while ( backSteps-- && backIterator != d->viewportHistory.begin() )
--backIterator;
// create history root node
QDomElement historyNode = doc.createElement( "history" );
generalInfo.appendChild( historyNode );
// add old[backIterator] and present[viewportIterator] items
QValueList< DocumentViewport >::iterator endIt = d->viewportIterator;
++endIt;
while ( backIterator != endIt )
{
QString name = (backIterator == d->viewportIterator) ? "current" : "oldPage";
QDomElement historyEntry = doc.createElement( name );
historyEntry.setAttribute( "viewport", (*backIterator).toString() );
historyNode.appendChild( historyEntry );
++backIterator;
}
}
// 3. Save DOM to XML file
QString xml = doc.toString();
QTextStream os( &infoFile );
os << xml;
}
infoFile.close();
}
void KPDFDocument::slotTimedMemoryCheck()
{
// [MEM] clean memory (for 'free mem dependant' profiles only)
if ( Settings::memoryLevel() != Settings::EnumMemoryLevel::Low &&
d->allocatedPixmapsTotalMemory > 1024*1024 )
cleanupPixmapMemory();
}
/** DocumentViewport **/
DocumentViewport::DocumentViewport( int n )
: pageNumber( n )
{
// default settings
rePos.enabled = false;
rePos.normalizedX = 0.5;
rePos.normalizedY = 0.0;
rePos.pos = Center;
autoFit.enabled = false;
autoFit.width = false;
autoFit.height = false;
}
DocumentViewport::DocumentViewport( const QString & xmlDesc )
: pageNumber( -1 )
{
// default settings (maybe overridden below)
rePos.enabled = false;
rePos.normalizedX = 0.5;
rePos.normalizedY = 0.0;
rePos.pos = Center;
autoFit.enabled = false;
autoFit.width = false;
autoFit.height = false;
// check for string presence
if ( xmlDesc.isEmpty() )
return;
// decode the string
bool ok;
int field = 0;
QString token = xmlDesc.section( ';', field, field );
while ( !token.isEmpty() )
{
// decode the current token
if ( field == 0 )
{
pageNumber = token.toInt( &ok );
if ( !ok )
return;
}
else if ( token.startsWith( "C1" ) )
{
rePos.enabled = true;
rePos.normalizedX = token.section( ':', 1, 1 ).toDouble();
rePos.normalizedY = token.section( ':', 2, 2 ).toDouble();
rePos.pos = Center;
}
else if ( token.startsWith( "C2" ) )
{
rePos.enabled = true;
rePos.normalizedX = token.section( ':', 1, 1 ).toDouble();
rePos.normalizedY = token.section( ':', 2, 2 ).toDouble();
if (token.section( ':', 3, 3 ).toInt() == 1) rePos.pos = Center;
else rePos.pos = TopLeft;
}
else if ( token.startsWith( "AF1" ) )
{
autoFit.enabled = true;
autoFit.width = token.section( ':', 1, 1 ) == "T";
autoFit.height = token.section( ':', 2, 2 ) == "T";
}
// proceed tokenizing string
field++;
token = xmlDesc.section( ';', field, field );
}
}
QString DocumentViewport::toString() const
{
// start string with page number
QString s = QString::number( pageNumber );
// if has center coordinates, save them on string
if ( rePos.enabled )
s += QString( ";C2:" ) + QString::number( rePos.normalizedX ) +
':' + QString::number( rePos.normalizedY ) +
':' + QString::number( rePos.pos );
// if has autofit enabled, save its state on string
if ( autoFit.enabled )
s += QString( ";AF1:" ) + (autoFit.width ? "T" : "F") +
':' + (autoFit.height ? "T" : "F");
return s;
}
bool DocumentViewport::operator==( const DocumentViewport & vp ) const
{
bool equal = ( pageNumber == vp.pageNumber ) &&
( rePos.enabled == vp.rePos.enabled ) &&
( autoFit.enabled == vp.autoFit.enabled );
if ( !equal )
return false;
if ( rePos.enabled &&
(( rePos.normalizedX != vp.rePos.normalizedX) ||
( rePos.normalizedY != vp.rePos.normalizedY ) || rePos.pos != vp.rePos.pos) )
return false;
if ( autoFit.enabled &&
(( autoFit.width != vp.autoFit.width ) ||
( autoFit.height != vp.autoFit.height )) )
return false;
return true;
}
/** DocumentInfo **/
DocumentInfo::DocumentInfo()
: QDomDocument( "DocumentInformation" )
{
QDomElement docElement = createElement( "DocumentInfo" );
appendChild( docElement );
}
void DocumentInfo::set( const QString &key, const QString &value,
const QString &title )
{
QDomElement docElement = documentElement();
QDomElement element;
// check whether key already exists
QDomNodeList list = docElement.elementsByTagName( key );
if ( list.count() > 0 )
element = list.item( 0 ).toElement();
else
element = createElement( key );
element.setAttribute( "value", value );
element.setAttribute( "title", title );
if ( list.count() == 0 )
docElement.appendChild( element );
}
QString DocumentInfo::get( const QString &key ) const
{
QDomElement docElement = documentElement();
QDomElement element;
// check whether key already exists
QDomNodeList list = docElement.elementsByTagName( key );
if ( list.count() > 0 )
return list.item( 0 ).toElement().attribute( "value" );
else
return QString();
}
/** DocumentSynopsis **/
DocumentSynopsis::DocumentSynopsis()
: QDomDocument( "DocumentSynopsis" )
{
// void implementation, only subclassed for naming
}
/** DocumentFonts **/
DocumentFonts::DocumentFonts()
: QDomDocument( "DocumentFonts" )
{
// void implementation, only subclassed for naming
}
#include "document.moc"
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