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okular/core/document.cpp

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/***************************************************************************
* Copyright (C) 2004 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 <qtextstream.h>
#include <qvaluevector.h>
#include <qtimer.h>
#include <qmap.h>
#include <kdebug.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>
// local includes
#include "document.h"
#include "observer.h"
#include "page.h"
#include "link.h"
#include "generator_pdf/generator_pdf.h" // PDF generator
#include "conf/settings.h"
// structures used internally by KPDFDocument for local variables storage
class KPDFDocumentPrivate
{
public:
// find related
QString searchText;
bool searchCase;
int searchPage;
// filtering related
QString filterText;
bool filterCase;
// cached stuff
DocumentViewport viewport;
QString docFileName;
QString xmlFileName;
// observers / requests stuff
QMap< int, DocumentObserver * > observers;
QValueList< PixmapRequest * > pixmapRequestsStack;
QValueList< class AllocatedPixmap * > allocatedPixmapsFifo;
int allocatedPixmapsTotalMemory;
// 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 ) {};
};
#define foreachObserver( cmd ) {\
QMap< int, DocumentObserver * >::iterator it=d->observers.begin(), end=d->observers.end();\
for ( ; it != end ; ++ it ) { (*it)-> cmd ; } }
KPDFDocument::KPDFDocument()
: generator( 0 ), d( new KPDFDocumentPrivate )
{
d->searchPage = -1;
d->allocatedPixmapsTotalMemory = 0;
d->memCheckTimer = 0;
d->saveBookmarksTimer = 0;
}
KPDFDocument::~KPDFDocument()
{
// delete generator, pages, and related stuff
closeDocument();
// delete the private structure
delete d;
}
bool KPDFDocument::openDocument( const QString & docFile )
{
// 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->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 );
QString mimeName = mime->name();
if ( mimeName == "application/pdf" )
generator = new PDFGenerator( this );
else if ( mimeName == "application/postscript" )
kdError() << "PS generator not available" << endl;
else
{
kdWarning() << "Unknown mimetype '" << mimeName << "'." << endl;
return false;
}
// 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 )
{
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
processPageList( true );
// 4. set initial page (restoring previous page saved in xml)
DocumentViewport loadedViewport = d->viewport;
if ( loadedViewport.pageNumber < 0 )
loadedViewport.pageNumber = 0;
else
d->viewport = DocumentViewport();
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 );
return true;
}
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();
// delete contents generator
delete generator;
generator = 0;
// 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();
// reset internal variables
d->viewport = DocumentViewport();
d->searchPage = -1;
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 );
}
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 );
// 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;
}
const DocumentInfo * KPDFDocument::documentInfo() const
{
return generator ? generator->generateDocumentInfo() : NULL;
}
const DocumentSynopsis * KPDFDocument::documentSynopsis() const
{
return generator ? generator->generateDocumentSynopsis() : NULL;
}
const KPDFPage * KPDFDocument::page( uint n ) const
{
return ( n < pages_vector.count() ) ? pages_vector[n] : 0;
}
const DocumentViewport & KPDFDocument::viewport() const
{
return d->viewport;
}
uint KPDFDocument::currentPage() const
{
return d->viewport.pageNumber;
}
uint KPDFDocument::pages() const
{
return pages_vector.size();
}
bool KPDFDocument::okToPrint() const
{
return generator ? generator->isAllowed( Generator::Print ) : false;
}
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 || requests.isEmpty() )
return;
#ifndef NDEBUG
//TODO REMOVE THIS
if ( !d->pixmapRequestsStack.isEmpty() && (*d->pixmapRequestsStack.begin())->priority == 0 )
kdDebug() << "calling requestPixmaps when SYNC generation has not yet finished." << endl;
#endif
// 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 )
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 ]) )
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.push_back( 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 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())
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 );
}
/* REFERENCE IMPLEMENTATION: better calling setViewport from other code
void KPDFDocument::setNextPage()
{
// advance page and set viewport on observers
if ( d->viewport.pageNumber < (int)pages_vector.count() - 1 )
setViewport( DocumentViewport( d->viewport.pageNumber + 1 ) );
}
void KPDFDocument::setPrevPage()
{
// go to previous page and set viewport on observers
if ( d->viewport.pageNumber > 0 )
setViewport( DocumentViewport( d->viewport.pageNumber - 1 ) );
}
*/
void KPDFDocument::setViewportPage( int page, int id )
{
// 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 ), id );
}
void KPDFDocument::setViewport( const DocumentViewport & viewport, int id )
{
// if already broadcasted, don't redo it
if ( viewport == d->viewport )
kdDebug() << "setViewport with the same viewport." << endl;
// set internal viewport
d->viewport = viewport;
// notify change to all other (different from id) viewports
QMap< int, DocumentObserver * >::iterator it = d->observers.begin(), end = d->observers.end();
for ( ; it != end ; ++ it )
if ( it.key() != id )
(*it)->notifyViewportChanged();
/* [MEM] raise position of currently viewed page in allocation queue
if ( d->allocatedPixmapsFifo.count() > 1 )
{
QValueList< AllocatedPixmap * >::iterator aIt = d->allocatedPixmapsFifo.begin();
QValueList< AllocatedPixmap * >::iterator aLast = d->allocatedPixmapsFifo.end();
--aLast;
while ( aIt != aLast )
{
if ( (*aIt)->page == viewport.pageNumber )
{
d->allocatedPixmapsFifo.append( *aIt );
aIt = d->allocatedPixmapsFifo.remove( aIt );
p--rintf("%d raised prio of %d %d\n",d->allocatedPixmapsFifo.count(), (*aIt)->id, (*aIt)->page);
}
else
++aIt;
}
}*/
}
bool KPDFDocument::findText( const QString & string, bool keepCase, bool findAhead )
{
// turn selection drawing off on filtered pages
if ( !d->filterText.isEmpty() )
unHilightPages();
// save params for the 'find next' case
if ( !string.isEmpty() )
{
d->searchText = string;
d->searchCase = keepCase;
}
// continue checking last SearchPage first (if it is the current page)
int currentPage = d->viewport.pageNumber;
int pageCount = pages_vector.count();
KPDFPage * foundPage = 0,
* lastPage = (d->searchPage > -1) ? pages_vector[ d->searchPage ] : 0;
if ( lastPage && d->searchPage == currentPage )
if ( lastPage->hasText( d->searchText, d->searchCase, findAhead ) )
foundPage = lastPage;
else
{
lastPage->clearAttribute( KPDFPage::Highlight );
currentPage++;
pageCount--;
}
if ( !foundPage )
// loop through the whole document
for ( int i = 0; i < pageCount; i++ )
{
if ( currentPage >= pageCount )
{
if ( !findAhead && KMessageBox::questionYesNo(0, i18n("End of document reached.\nContinue from the beginning?")) == KMessageBox::Yes )
currentPage = 0;
else
break;
}
KPDFPage * page = pages_vector[ currentPage ];
if ( !page->hasSearchPage() )
requestTextPage( page->number() );
if ( page->hasText( d->searchText, d->searchCase, true ) )
{
foundPage = page;
break;
}
currentPage++;
}
if ( foundPage )
{
int pageNumber = foundPage->number();
d->searchPage = pageNumber;
foundPage->setAttribute( KPDFPage::Highlight );
// move the viewport to show the searched word centered
DocumentViewport searchViewport( pageNumber );
const QPoint & center = foundPage->getLastSearchCenter();
searchViewport.reCenter.enabled = true;
searchViewport.reCenter.normalizedCenterX = (double)center.x() / foundPage->width();
searchViewport.reCenter.normalizedCenterY = (double)center.y() / foundPage->height();
setViewport( searchViewport );
// notify all observers about hilighting chages
foreachObserver( notifyPageChanged( pageNumber, DocumentObserver::Highlights ) );
}
else if ( !findAhead )
KMessageBox::information( 0, i18n("No matches found for '%1'.").arg(d->searchText) );
return foundPage;
}
void KPDFDocument::findTextAll( const QString & pattern, bool keepCase )
{
// if pattern is null, clear 'hilighted' attribute in all pages
if ( pattern.isEmpty() )
unHilightPages();
// cache search pattern
d->filterText = pattern;
d->filterCase = keepCase;
// set the busy cursor globally on the application
QApplication::setOverrideCursor( waitCursor );
// perform a linear search/mark
processPageList( false );
// reset cursor to previous shape
QApplication::restoreOverrideCursor();
}
void KPDFDocument::toggleBookmark( int n )
{
KPDFPage * page = ( n < (int)pages_vector.count() ) ? pages_vector[ n ] : 0;
if ( page )
{
page->toggleAttribute( KPDFPage::Bookmark );
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 );
DocumentViewport destVp = go->destViewport();
// first open filename if link is pointing outside this document
if ( go->isExternal() && !openRelativeFile( go->fileName() ) )
{
kdWarning() << "Link: Error opening '" << go->fileName() << "'." << endl;
return;
}
// note: if external file is opened, 'link' doesn't exist anymore!
setViewport( destVp );
} 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->viewport.pageNumber > 0 )
setViewportPage( d->viewport.pageNumber - 1 );
break;
case KPDFLinkAction::PageNext:
if ( d->viewport.pageNumber < (int)pages_vector.count() - 1 )
setViewportPage( d->viewport.pageNumber + 1 );
break;
case KPDFLinkAction::PageLast:
setViewportPage( pages_vector.count() - 1 );
break;
case KPDFLinkAction::HistoryBack:
{} //TODO
break;
case KPDFLinkAction::HistoryForward:
{} //TODO
break;
case KPDFLinkAction::Quit:
kapp->quit();
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 );
// get service for web browsing TODO: check for "mailto:" links
KService::Ptr ptr = KServiceTypeProfile::preferredService("text/html", "Application");
KURL::List lst;
// append 'url' parameter to the service and run it
lst.append( browse->url() );
KRun::run( *ptr, lst );
} break;
case KPDFLink::Movie:
//const KPDFLinkMovie * browse = static_cast< const KPDFLinkMovie * >( link );
// TODO this
break;
}
}
bool KPDFDocument::print( KPrinter &printer )
{
return generator ? generator->print( printer ) : false;
}
void KPDFDocument::requestDone( PixmapRequest * req )
{
#ifndef NDEBUG
if ( !generator->canGeneratePixmap() )
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();
d->pixmapRequestsStack.pop_back();
// request only if page isn't already present
if ( !r->page->hasPixmap( r->id, r->width, r->height ) )
request = r;
else
delete 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
generator->generatePixmap( request );
}
void KPDFDocument::cleanupPixmapMemory( int /*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 ) )
{
// Load DOM from XML file
QDomDocument doc( "documentInfo" );
if ( !doc.setContent( &infoFile ) )
{
kdDebug() << "Could not set content" << endl;
infoFile.close();
return;
}
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();
// Get bookmarks list from DOM
if ( catName == "bookmarkList" )
{
QDomNode n = topLevelNode.firstChild();
QDomElement e;
int pageNumber;
bool ok;
while ( n.isElement() )
{
e = n.toElement();
if (e.tagName() == "page")
{
pageNumber = e.text().toInt(&ok);
if ( ok && pageNumber >= 0 && pageNumber < (int)pages_vector.count() )
pages_vector[ pageNumber ]->setAttribute( KPDFPage::Bookmark );
}
n = n.nextSibling();
}
}
// Get 'general info' from the DOM
else if ( catName == "generalInfo" )
{
QDomNode infoNode = topLevelNode.firstChild();
while ( infoNode.isElement() )
{
QDomElement infoElement = infoNode.toElement();
if ( infoElement.tagName() == "activePage" )
{
if ( infoElement.hasAttribute( "viewport" ) )
d->viewport = DocumentViewport( infoElement.attribute( "viewport" ) );
}
infoNode = infoNode.nextSibling();
}
}
topLevelNode = topLevelNode.nextSibling();
}
}
infoFile.close();
}
QString KPDFDocument::giveAbsolutePath( const QString & fileName )
{
if ( d->docFileName.isEmpty() )
return QString::null;
// convert the pdf fileName to absolute using current pdf path
QFileInfo currentInfo( d->docFileName );
return currentInfo.dir().absFilePath( fileName );
}
bool KPDFDocument::openRelativeFile( const QString & fileName )
{
QString absFileName = giveAbsolutePath( fileName );
if ( absFileName.isNull() )
return false;
kdDebug() << "openDocument: '" << absFileName << "'" << endl;
// open the absolute filename
return openDocument( absFileName );
}
void KPDFDocument::processPageList( bool documentChanged )
{
if ( d->filterText.length() < 3 )
unHilightPages();
else
{
uint pageCount = pages_vector.count();
for ( uint i = 0; i < pageCount ; i++ )
{
KPDFPage * page = pages_vector[ i ];
page->clearAttribute( KPDFPage::Highlight );
if ( d->filterText.length() > 2 )
{
if ( !page->hasSearchPage() )
requestTextPage( i );
if ( page->hasText( d->filterText, d->filterCase, true ) )
page->setAttribute( KPDFPage::Highlight );
}
}
}
// send the list to observers
foreachObserver( notifySetup( pages_vector, documentChanged ) );
}
void KPDFDocument::unHilightPages(bool filteredOnly)
{
if ( filteredOnly && d->filterText.isEmpty() )
return;
d->filterText = QString::null;
QValueVector<KPDFPage*>::iterator it = pages_vector.begin(), end = pages_vector.end();
for ( ; it != end; ++it )
{
KPDFPage * page = *it;
if ( page->attributes() & KPDFPage::Highlight )
{
page->clearAttribute( KPDFPage::Highlight );
foreachObserver( notifyPageChanged( page->number(), DocumentObserver::Highlights ) );
}
}
}
void KPDFDocument::saveDocumentInfo() const
{
if ( d->docFileName.isNull() )
return;
//kdDebug() << "Using '" << d->xmlFileName << "' as document info file for saving." << endl;
QFile infoFile( d->xmlFileName );
if (infoFile.open( IO_WriteOnly | IO_Truncate) )
{
// Create DOM
QDomDocument doc( "documentInfo" );
QDomElement root = doc.createElement( "documentInfo" );
doc.appendChild( root );
// Add bookmark list to DOM
QDomElement bookmarkList = doc.createElement( "bookmarkList" );
root.appendChild( bookmarkList );
for ( uint i = 0; i < pages_vector.count() ; i++ )
{
if (pages_vector[i]->attributes() & KPDFPage::Bookmark)
{
QDomElement page = doc.createElement( "page" );
page.appendChild( doc.createTextNode( QString::number(i) ) );
bookmarkList.appendChild( page );
}
}
// Add general info to DOM
QDomElement generalInfo = doc.createElement( "generalInfo" );
root.appendChild( generalInfo );
QDomElement activePage = doc.createElement( "activePage" );
activePage.setAttribute( "viewport", d->viewport.toString() );
generalInfo.appendChild( activePage );
// 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
reCenter.enabled = false;
reCenter.normalizedCenterX = 0.5;
reCenter.normalizedCenterY = 0.0;
autoFit.enabled = false;
autoFit.width = false;
autoFit.height = false;
}
DocumentViewport::DocumentViewport( const QString & xmlDesc )
: pageNumber( -1 )
{
// default settings (maybe overridden below)
reCenter.enabled = false;
reCenter.normalizedCenterX = 0.5;
reCenter.normalizedCenterY = 0.0;
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" ) )
{
reCenter.enabled = true;
reCenter.normalizedCenterX = token.section( ':', 1, 1 ).toDouble();
reCenter.normalizedCenterY = token.section( ':', 2, 2 ).toDouble();
}
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 ( reCenter.enabled )
s += QString( ";C1:" ) + QString::number( reCenter.normalizedCenterX ) +
':' + QString::number( reCenter.normalizedCenterY );
// 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 ) &&
( reCenter.enabled == vp.reCenter.enabled ) &&
( autoFit.enabled == vp.autoFit.enabled );
if ( !equal )
return false;
if ( reCenter.enabled &&
(( reCenter.normalizedCenterX != vp.reCenter.normalizedCenterX ) ||
( reCenter.normalizedCenterY != vp.reCenter.normalizedCenterY )) )
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
}
#include "document.moc"