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Current File : //usr/share/emscripten/tests/poppler/qt4/src/poppler-private.cc
/* poppler-private.cc: qt interface to poppler
* Copyright (C) 2005, Net Integration Technologies, Inc.
* Copyright (C) 2006, 2011 by Albert Astals Cid <aacid@kde.org>
* Copyright (C) 2008, 2010, 2011 by Pino Toscano <pino@kde.org>
* Inspired on code by
* Copyright (C) 2004 by Albert Astals Cid <tsdgeos@terra.es>
* Copyright (C) 2004 by Enrico Ros <eros.kde@email.it>
*
* 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, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "poppler-private.h"
#include <QtCore/QByteArray>
#include <QtCore/QDebug>
#include <QtCore/QVariant>
#include <Link.h>
#include <Outline.h>
#include <UnicodeMap.h>
namespace Poppler {
namespace Debug {
void qDebugDebugFunction(const QString &message, const QVariant & /*closure*/)
{
qDebug() << message;
}
PopplerDebugFunc debugFunction = qDebugDebugFunction;
QVariant debugClosure;
}
static UnicodeMap *utf8Map = 0;
void setDebugErrorFunction(PopplerDebugFunc function, const QVariant &closure)
{
Debug::debugFunction = function ? function : Debug::qDebugDebugFunction;
Debug::debugClosure = closure;
}
void qt4ErrorFunction(int pos, char *msg, va_list args)
{
QString emsg;
char buffer[1024]; // should be big enough
if (pos >= 0)
{
emsg = QString::fromLatin1("Error (%1): ").arg(pos);
}
else
{
emsg = QString::fromLatin1("Error: ");
}
qvsnprintf(buffer, sizeof(buffer) - 1, msg, args);
emsg += QString::fromAscii(buffer);
(*Debug::debugFunction)(emsg, Debug::debugClosure);
}
QString unicodeToQString(Unicode* u, int len) {
if (!utf8Map)
{
GooString enc("UTF-8");
utf8Map = globalParams->getUnicodeMap(&enc);
utf8Map->incRefCnt();
}
// ignore the last character if it is 0x0
if ((len > 0) && (u[len - 1] == 0))
{
--len;
}
GooString convertedStr;
for (int i = 0; i < len; ++i)
{
char buf[8];
const int n = utf8Map->mapUnicode(u[i], buf, sizeof(buf));
convertedStr.append(buf, n);
}
return QString::fromUtf8(convertedStr.getCString(), convertedStr.getLength());
}
QString UnicodeParsedString(GooString *s1) {
if ( !s1 || s1->getLength() == 0 )
return QString();
GBool isUnicode;
int i;
Unicode u;
QString result;
if ( ( s1->getChar(0) & 0xff ) == 0xfe && ( s1->getLength() > 1 && ( s1->getChar(1) & 0xff ) == 0xff ) )
{
isUnicode = gTrue;
i = 2;
result.reserve( ( s1->getLength() - 2 ) / 2 );
}
else
{
isUnicode = gFalse;
i = 0;
result.reserve( s1->getLength() );
}
while ( i < s1->getLength() )
{
if ( isUnicode )
{
u = ( ( s1->getChar(i) & 0xff ) << 8 ) | ( s1->getChar(i+1) & 0xff );
i += 2;
}
else
{
u = s1->getChar(i) & 0xff;
++i;
}
result += QChar( u );
}
return result;
}
GooString *QStringToUnicodeGooString(const QString &s) {
int len = s.length() * 2 + 2;
char *cstring = (char *)gmallocn(len, sizeof(char));
cstring[0] = 0xfe;
cstring[1] = 0xff;
for (int i = 0; i < s.length(); ++i)
{
cstring[2+i*2] = s.at(i).row();
cstring[3+i*2] = s.at(i).cell();
}
GooString *ret = new GooString(cstring, len);
gfree(cstring);
return ret;
}
GooString *QStringToGooString(const QString &s) {
int len = s.length();
char *cstring = (char *)gmallocn(s.length(), sizeof(char));
for (int i = 0; i < len; ++i)
cstring[i] = s.at(i).unicode();
GooString *ret = new GooString(cstring, len);
gfree(cstring);
return ret;
}
void linkActionToTocItem( ::LinkAction * a, DocumentData * doc, QDomElement * e )
{
if ( !a || !e )
return;
switch ( a->getKind() )
{
case actionGoTo:
{
// page number is contained/referenced in a LinkGoTo
LinkGoTo * g = static_cast< LinkGoTo * >( a );
LinkDest * destination = g->getDest();
if ( !destination && g->getNamedDest() )
{
// no 'destination' but an internal 'named reference'. we could
// get the destination for the page now, but it's VERY time consuming,
// so better storing the reference and provide the viewport on demand
GooString *s = g->getNamedDest();
QChar *charArray = new QChar[s->getLength()];
for (int i = 0; i < s->getLength(); ++i) charArray[i] = QChar(s->getCString()[i]);
QString aux(charArray, s->getLength());
e->setAttribute( "DestinationName", aux );
delete[] charArray;
}
else if ( destination && destination->isOk() )
{
LinkDestinationData ldd(destination, NULL, doc, false);
e->setAttribute( "Destination", LinkDestination(ldd).toString() );
}
break;
}
case actionGoToR:
{
// page number is contained/referenced in a LinkGoToR
LinkGoToR * g = static_cast< LinkGoToR * >( a );
LinkDest * destination = g->getDest();
if ( !destination && g->getNamedDest() )
{
// no 'destination' but an internal 'named reference'. we could
// get the destination for the page now, but it's VERY time consuming,
// so better storing the reference and provide the viewport on demand
GooString *s = g->getNamedDest();
QChar *charArray = new QChar[s->getLength()];
for (int i = 0; i < s->getLength(); ++i) charArray[i] = QChar(s->getCString()[i]);
QString aux(charArray, s->getLength());
e->setAttribute( "DestinationName", aux );
delete[] charArray;
}
else if ( destination && destination->isOk() )
{
LinkDestinationData ldd(destination, NULL, doc, g->getFileName() != 0);
e->setAttribute( "Destination", LinkDestination(ldd).toString() );
}
e->setAttribute( "ExternalFileName", g->getFileName()->getCString() );
break;
}
case actionURI:
{
LinkURI * u = static_cast< LinkURI * >( a );
e->setAttribute( "DestinationURI", u->getURI()->getCString() );
}
default: ;
}
}
DocumentData::~DocumentData()
{
qDeleteAll(m_embeddedFiles);
delete (OptContentModel *)m_optContentModel;
delete doc;
delete m_outputDev;
delete m_fontInfoIterator;
count --;
if ( count == 0 )
{
utf8Map = 0;
delete globalParams;
}
}
void DocumentData::init(GooString *ownerPassword, GooString *userPassword)
{
m_fontInfoIterator = 0;
m_backend = Document::SplashBackend;
m_outputDev = 0;
paperColor = Qt::white;
m_hints = 0;
m_optContentModel = 0;
// It might be more appropriate to delete these in PDFDoc
delete ownerPassword;
delete userPassword;
if ( count == 0 )
{
utf8Map = 0;
globalParams = new GlobalParams();
setErrorFunction(qt4ErrorFunction);
}
count ++;
}
void DocumentData::addTocChildren( QDomDocument * docSyn, QDomNode * parent, GooList * items )
{
int numItems = items->getLength();
for ( int i = 0; i < numItems; ++i )
{
// iterate over every object in 'items'
OutlineItem * outlineItem = (OutlineItem *)items->get( i );
// 1. create element using outlineItem's title as tagName
QString name;
Unicode * uniChar = outlineItem->getTitle();
int titleLength = outlineItem->getTitleLength();
name = unicodeToQString(uniChar, titleLength);
if ( name.isEmpty() )
continue;
QDomElement item = docSyn->createElement( name );
parent->appendChild( item );
// 2. find the page the link refers to
::LinkAction * a = outlineItem->getAction();
linkActionToTocItem( a, this, &item );
item.setAttribute( "Open", QVariant( (bool)outlineItem->isOpen() ).toString() );
// 3. recursively descend over children
outlineItem->open();
GooList * children = outlineItem->getKids();
if ( children )
addTocChildren( docSyn, &item, children );
}
}
}
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