filters

ooutils.cc

00001 /* This file is part of the KDE project
00002    Copyright (C) 2002 Laurent Montel <lmontel@mandrakesoft.com>
00003    Copyright (c) 2003 Lukas Tinkl <lukas@kde.org>
00004    Copyright (c) 2003 David Faure <faure@kde.org>
00005 
00006    This library is free software; you can redistribute it and/or
00007    modify it under the terms of the GNU Library General Public
00008    License as published by the Free Software Foundation; either
00009    version 2 of the License, or (at your option) any later version.
00010 
00011    This library is distributed in the hope that it will be useful,
00012    but WITHOUT ANY WARRANTY; without even the implied warranty of
00013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014    Library General Public License for more details.
00015 
00016    You should have received a copy of the GNU Library General Public License
00017    along with this library; see the file COPYING.LIB.  If not, write to
00018    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00019  * Boston, MA 02110-1301, USA.
00020 */
00021 
00022 #include "ooutils.h"
00023 #include <KoDocument.h>
00024 #include <KoStyleStack.h>
00025 #include <qdom.h>
00026 #include <qcolor.h>
00027 #include <qimage.h>
00028 #include <KoUnit.h>
00029 #include <qregexp.h>
00030 #include <kdebug.h>
00031 #include <kzip.h>
00032 #include <KoDom.h>
00033 #include <qxml.h>
00034 
00035 const char* const ooNS::office="http://openoffice.org/2000/office";
00036 const char* const ooNS::style="http://openoffice.org/2000/style";
00037 const char* const ooNS::text="http://openoffice.org/2000/text";
00038 const char* const ooNS::table="http://openoffice.org/2000/table";
00039 const char* const ooNS::draw="http://openoffice.org/2000/drawing";
00040 const char* const ooNS::presentation="http://openoffice.org/2000/presentation";
00041 const char* const ooNS::fo="http://www.w3.org/1999/XSL/Format";
00042 const char* const ooNS::xlink="http://www.w3.org/1999/xlink";
00043 const char* const ooNS::number="http://openoffice.org/2000/datastyle";
00044 const char* const ooNS::svg="http://www.w3.org/2000/svg";
00045 const char* const ooNS::dc="http://purl.org/dc/elements/1.1/";
00046 const char* const ooNS::meta="http://openoffice.org/2000/meta";
00047 const char* const ooNS::config="http://openoffice.org/2001/config";
00048 
00049 QString OoUtils::expandWhitespace(const QDomElement& tag)
00050 {
00051     //tags like <text:s text:c="4">
00052 
00053     int howmany=1;
00054     if (tag.hasAttributeNS( ooNS::text, "c"))
00055         howmany = tag.attributeNS( ooNS::text, "c", QString::null).toInt();
00056 
00057     QString result;
00058     return result.fill(32, howmany);
00059 }
00060 
00061 bool OoUtils::parseBorder(const QString & tag, double * width, int * style, QColor * color)
00062 {
00063     //string like "0.088cm solid #800000"
00064 
00065     if (tag.isEmpty() || tag=="none" || tag=="hidden") // in fact no border
00066         return false;
00067 
00068     QString _width = tag.section(' ', 0, 0);
00069     QString _style = tag.section(' ', 1, 1);
00070     QString _color = tag.section(' ', 2, 2);
00071 
00072     *width = KoUnit::parseValue(_width, 1.0);
00073 
00074     if ( _style == "dashed" )
00075         *style = 1;
00076     else if ( _style == "dotted" )
00077         *style = 2;
00078     else if ( _style == "dot-dash" ) // not in xsl/fo, but in OASIS (in other places)
00079         *style = 3;
00080     else if ( _style == "dot-dot-dash" ) // not in xsl/fo, but in OASIS (in other places)
00081         *style = 4;
00082     else if ( _style == "double" )
00083         *style = 5;
00084     else
00085         *style = 0;
00086 
00087     if (_color.isEmpty())
00088         *color = QColor();
00089     else
00090         color->setNamedColor(_color);
00091 
00092     return true;
00093 }
00094 
00095 void OoUtils::importIndents( QDomElement& parentElement, const KoStyleStack& styleStack )
00096 {
00097     if ( styleStack.hasAttributeNS( ooNS::fo, "margin-left" ) || // 3.11.19
00098          styleStack.hasAttributeNS( ooNS::fo, "margin-right" ) )
00099          // *text-indent must always be bound to either margin-left or margin-right
00100     {
00101         double marginLeft = KoUnit::parseValue( styleStack.attributeNS( ooNS::fo, "margin-left" ) );
00102         double marginRight = KoUnit::parseValue( styleStack.attributeNS( ooNS::fo, "margin-right" ) );
00103         double first = 0;
00104         if (styleStack.attributeNS( ooNS::style, "auto-text-indent") == "true") // style:auto-text-indent takes precedence
00105             // ### "indented by a value that is based on the current font size"
00106             // ### and "requires margin-left and margin-right
00107             // ### but how much is the indent?
00108             first = 10;
00109         else if (styleStack.hasAttributeNS( ooNS::fo, "text-indent"))
00110             first = KoUnit::parseValue( styleStack.attributeNS( ooNS::fo, "text-indent"));
00111 
00112         if ( marginLeft != 0 || marginRight != 0 || first != 0 )
00113         {
00114             QDomElement indent = parentElement.ownerDocument().createElement( "INDENTS" );
00115             if( marginLeft != 0 )
00116                 indent.setAttribute( "left", marginLeft );
00117             if( marginRight != 0 )
00118                 indent.setAttribute( "right", marginRight );
00119             if( first != 0 )
00120                 indent.setAttribute( "first", first );
00121             parentElement.appendChild( indent );
00122         }
00123     }
00124 }
00125 
00126 void OoUtils::importLineSpacing( QDomElement& parentElement, const KoStyleStack& styleStack )
00127 {
00128     if( styleStack.hasAttributeNS( ooNS::fo, "line-height") )
00129     {
00130         // Fixed line height
00131         QString value = styleStack.attributeNS( ooNS::fo, "line-height" ); // 3.11.1
00132         if ( value != "normal" )
00133         {
00134             QDomElement lineSpacing = parentElement.ownerDocument().createElement( "LINESPACING" );
00135             if ( value == "100%" )
00136                 lineSpacing.setAttribute("type","single");
00137             else if( value=="150%")
00138                 lineSpacing.setAttribute("type","oneandhalf");
00139             else if( value=="200%")
00140                 lineSpacing.setAttribute("type","double");
00141             else if ( value.find('%') > -1 )
00142             {
00143                 double percent = value.toDouble();
00144                 lineSpacing.setAttribute("type", "multiple");
00145                 lineSpacing.setAttribute("spacingvalue", percent/100);
00146             }
00147             else // fixed value (use KoUnit::parseValue to get it in pt)
00148             {
00149                 kdWarning(30519) << "Unhandled value for fo:line-height: " << value << endl;
00150             }
00151             parentElement.appendChild( lineSpacing );
00152         }
00153     }
00154     // Line-height-at-least is mutually exclusive with line-height
00155     else if ( styleStack.hasAttributeNS( ooNS::style, "line-height-at-least") ) // 3.11.2
00156     {
00157         QString value = styleStack.attributeNS( ooNS::style, "line-height-at-least" );
00158         // kotext has "at least" but that's for the linespacing, not for the entire line height!
00159         // Strange. kotext also has "at least" for the whole line height....
00160         // Did we make the wrong choice in kotext?
00161         //kdWarning(30519) << "Unimplemented support for style:line-height-at-least: " << value << endl;
00162         // Well let's see if this makes a big difference.
00163         QDomElement lineSpacing = parentElement.ownerDocument().createElement("LINESPACING");
00164         lineSpacing.setAttribute("type", "atleast");
00165         lineSpacing.setAttribute("spacingvalue", KoUnit::parseValue(value));
00166         parentElement.appendChild(lineSpacing);
00167     }
00168     // Line-spacing is mutually exclusive with line-height and line-height-at-least
00169     else if ( styleStack.hasAttributeNS( ooNS::style, "line-spacing") ) // 3.11.3
00170     {
00171         double value = KoUnit::parseValue( styleStack.attributeNS( ooNS::style, "line-spacing" ) );
00172         if ( value != 0.0 )
00173         {
00174             QDomElement lineSpacing = parentElement.ownerDocument().createElement( "LINESPACING" );
00175             lineSpacing.setAttribute( "type", "custom" );
00176             lineSpacing.setAttribute( "spacingvalue", value );
00177             parentElement.appendChild( lineSpacing );
00178         }
00179     }
00180 
00181 }
00182 
00183 void OoUtils::importTopBottomMargin( QDomElement& parentElement, const KoStyleStack& styleStack )
00184 {
00185     if( styleStack.hasAttributeNS( ooNS::fo, "margin-top") || // 3.11.22
00186         styleStack.hasAttributeNS( ooNS::fo, "margin-bottom"))
00187     {
00188         double mtop = KoUnit::parseValue( styleStack.attributeNS( ooNS::fo, "margin-top" ) );
00189         double mbottom = KoUnit::parseValue( styleStack.attributeNS( ooNS::fo, "margin-bottom" ) );
00190         if( mtop != 0 || mbottom != 0 )
00191         {
00192             QDomElement offset = parentElement.ownerDocument().createElement( "OFFSETS" );
00193             if( mtop != 0 )
00194                 offset.setAttribute( "before", mtop );
00195             if( mbottom != 0 )
00196                 offset.setAttribute( "after", mbottom );
00197             parentElement.appendChild( offset );
00198         }
00199     }
00200 }
00201 
00202 void OoUtils::importTabulators( QDomElement& parentElement, const KoStyleStack& styleStack )
00203 {
00204     if ( !styleStack.hasChildNodeNS( ooNS::style, "tab-stops" ) ) // 3.11.10
00205         return;
00206     QDomElement tabStops = styleStack.childNodeNS( ooNS::style, "tab-stops" );
00207     //kdDebug(30519) << k_funcinfo << tabStops.childNodes().count() << " tab stops in layout." << endl;
00208     for ( QDomNode it = tabStops.firstChild(); !it.isNull(); it = it.nextSibling() )
00209     {
00210         QDomElement tabStop = it.toElement();
00211         Q_ASSERT( tabStop.tagName() == "style:tab-stop" );
00212         QString type = tabStop.attributeNS( ooNS::style, "type", QString::null ); // left, right, center or char
00213 
00214         QDomElement elem = parentElement.ownerDocument().createElement( "TABULATOR" );
00215         int kOfficeType = 0;
00216         if ( type == "left" )
00217             kOfficeType = 0;
00218         else if ( type == "center" )
00219             kOfficeType = 1;
00220         else if ( type == "right" )
00221             kOfficeType = 2;
00222         else if ( type == "char" ) {
00223             QString delimiterChar = tabStop.attributeNS( ooNS::style, "char", QString::null ); // single character
00224             elem.setAttribute( "alignchar", delimiterChar );
00225             kOfficeType = 3; // "alignment on decimal point"
00226         }
00227 
00228         elem.setAttribute( "type", kOfficeType );
00229 
00230         double pos = KoUnit::parseValue( tabStop.attributeNS( ooNS::style, "position", QString::null ) );
00231         elem.setAttribute( "ptpos", pos );
00232 
00233         // TODO Convert leaderChar's unicode value to the KOffice enum
00234         // (blank/dots/line/dash/dash-dot/dash-dot-dot, 0 to 5)
00235         QString leaderChar = tabStop.attributeNS( ooNS::style, "leader-char", QString::null ); // single character
00236         if ( !leaderChar.isEmpty() )
00237         {
00238             int filling = 0;
00239             QChar ch = leaderChar[0];
00240             switch (ch.latin1()) {
00241             case '.':
00242                 filling = 1; break;
00243             case '-':
00244             case '_':  // TODO in KWord: differentiate --- and ___
00245                 filling = 2; break;
00246             default:
00247                 // KWord doesn't have support for "any char" as filling.
00248                 // Instead it has dash-dot and dash-dot-dot - but who uses that in a tabstop?
00249                 break;
00250             }
00251             elem.setAttribute( "filling", filling );
00252         }
00253         parentElement.appendChild( elem );
00254     }
00255 
00256 }
00257 
00258 void OoUtils::importBorders( QDomElement& parentElement, const KoStyleStack& styleStack )
00259 {
00260     if (styleStack.hasAttributeNS( ooNS::fo, "border","left"))
00261     {
00262         double width;
00263         int style;
00264         QColor color;
00265         if (OoUtils::parseBorder(styleStack.attributeNS( ooNS::fo, "border", "left"), &width, &style, &color))
00266         {
00267             QDomElement lbElem = parentElement.ownerDocument().createElement("LEFTBORDER");
00268             lbElem.setAttribute("width", width);
00269             lbElem.setAttribute("style", style);
00270             if (color.isValid()) {
00271                 lbElem.setAttribute("red", color.red());
00272                 lbElem.setAttribute("green", color.green());
00273                 lbElem.setAttribute("blue", color.blue());
00274             }
00275             parentElement.appendChild(lbElem);
00276         }
00277     }
00278 
00279     if (styleStack.hasAttributeNS( ooNS::fo, "border", "right"))
00280     {
00281         double width;
00282         int style;
00283         QColor color;
00284         if (OoUtils::parseBorder(styleStack.attributeNS( ooNS::fo, "border", "right"), &width, &style, &color))
00285         {
00286             QDomElement lbElem = parentElement.ownerDocument().createElement("RIGHTBORDER");
00287             lbElem.setAttribute("width", width);
00288             lbElem.setAttribute("style", style);
00289             if (color.isValid()) {
00290                 lbElem.setAttribute("red", color.red());
00291                 lbElem.setAttribute("green", color.green());
00292                 lbElem.setAttribute("blue", color.blue());
00293             }
00294             parentElement.appendChild(lbElem);
00295         }
00296     }
00297 
00298     if (styleStack.hasAttributeNS( ooNS::fo, "border", "top"))
00299     {
00300         double width;
00301         int style;
00302         QColor color;
00303         if (OoUtils::parseBorder(styleStack.attributeNS( ooNS::fo, "border", "top"), &width, &style, &color))
00304         {
00305             QDomElement lbElem = parentElement.ownerDocument().createElement("TOPBORDER");
00306             lbElem.setAttribute("width", width);
00307             lbElem.setAttribute("style", style);
00308             if (color.isValid()) {
00309                 lbElem.setAttribute("red", color.red());
00310                 lbElem.setAttribute("green", color.green());
00311                 lbElem.setAttribute("blue", color.blue());
00312             }
00313             parentElement.appendChild(lbElem);
00314         }
00315     }
00316 
00317     if (styleStack.hasAttributeNS( ooNS::fo, "border", "bottom"))
00318     {
00319         double width;
00320         int style;
00321         QColor color;
00322         if (OoUtils::parseBorder(styleStack.attributeNS( ooNS::fo, "border", "bottom"), &width, &style, &color))
00323         {
00324             QDomElement lbElem = parentElement.ownerDocument().createElement("BOTTOMBORDER");
00325             lbElem.setAttribute("width", width);
00326             lbElem.setAttribute("style", style);
00327             if (color.isValid()) {
00328                 lbElem.setAttribute("red", color.red());
00329                 lbElem.setAttribute("green", color.green());
00330                 lbElem.setAttribute("blue", color.blue());
00331             }
00332             parentElement.appendChild(lbElem);
00333         }
00334     }
00335 }
00336 
00337 void OoUtils::importUnderline( const QString& in, QString& underline, QString& styleline )
00338 {
00339     underline = "single";
00340     if ( in == "none" )
00341         underline = "0";
00342     else if ( in == "single" )
00343         styleline = "solid";
00344     else if ( in == "double" )
00345     {
00346         underline = in;
00347         styleline = "solid";
00348     }
00349     else if ( in == "dotted" || in == "bold-dotted" ) // bold-dotted not in libkotext
00350         styleline = "dot";
00351     else if ( in == "dash"
00352               // those are not in libkotext:
00353               || in == "long-dash"
00354               || in == "bold-dash"
00355               || in == "bold-long-dash"
00356         )
00357         styleline = "dash";
00358     else if ( in == "dot-dash"
00359               || in == "bold-dot-dash") // not in libkotext
00360         styleline = "dashdot"; // tricky ;)
00361     else if ( in == "dot-dot-dash"
00362               || in == "bold-dot-dot-dash") // not in libkotext
00363         styleline = "dashdotdot"; // this is getting fun...
00364     else if ( in == "wave"
00365               || in == "bold-wave" // not in libkotext
00366               || in == "double-wave" // not in libkotext
00367               || in == "small-wave" ) // not in libkotext
00368     {
00369         underline = in;
00370         styleline = "solid";
00371     }
00372     else if( in == "bold" )
00373     {
00374         underline = "single-bold";
00375         styleline = "solid";
00376     }
00377     else
00378         kdWarning(30519) << k_funcinfo << " unsupported text-underline value: " << in << endl;
00379 }
00380 
00381 void OoUtils::importTextPosition( const QString& text_position, QString& value, QString& relativetextsize )
00382 {
00383     //OO: <vertical position (% or sub or super)> [<size as %>]
00384     //Examples: "super" or "super 58%" or "82% 58%" (where 82% is the vertical position)
00385     // TODO in kword: vertical positions other than sub/super
00386     QStringList lst = QStringList::split( ' ', text_position );
00387     if ( !lst.isEmpty() )
00388     {
00389         QString textPos = lst.front().stripWhiteSpace();
00390         QString textSize;
00391         lst.pop_front();
00392         if ( !lst.isEmpty() )
00393             textSize = lst.front().stripWhiteSpace();
00394         if ( !lst.isEmpty() )
00395             kdWarning(30519) << "Strange text position: " << text_position << endl;
00396         bool super = textPos == "super";
00397         bool sub = textPos == "sub";
00398         if ( textPos.endsWith("%") )
00399         {
00400             textPos.truncate( textPos.length() - 1 );
00401             // This is where we interpret the text position into kotext's simpler
00402             // "super" or "sub".
00403             double val = textPos.toDouble();
00404             if ( val > 0 )
00405                 super = true;
00406             else if ( val < 0 )
00407                 sub = true;
00408         }
00409         if ( super )
00410             value = "2";
00411         else if ( sub )
00412             value = "1";
00413         else
00414             value = "0";
00415         if ( !textSize.isEmpty() && textSize.endsWith("%") )
00416         {
00417             textSize.truncate( textSize.length() - 1 );
00418             double textSizeValue = textSize.toDouble() / 100; // e.g. 0.58
00419             relativetextsize = QString::number( textSizeValue );
00420         }
00421     }
00422     else
00423         value = "0";
00424 }
00425 
00426 void OoUtils::createDocumentInfo(QDomDocument &_meta, QDomDocument & docinfo)
00427 {
00428     QDomNode meta   = KoDom::namedItemNS( _meta, ooNS::office, "document-meta" );
00429     QDomNode office = KoDom::namedItemNS( meta, ooNS::office, "meta" );
00430 
00431     if ( office.isNull() )
00432         return;
00433     QDomElement elementDocInfo  = docinfo.documentElement();
00434 
00435     QDomElement e = KoDom::namedItemNS( office, ooNS::dc, "creator" );
00436     if ( !e.isNull() && !e.text().isEmpty() )
00437     {
00438         QDomElement author = docinfo.createElement( "author" );
00439         QDomElement t = docinfo.createElement( "full-name" );
00440         author.appendChild( t );
00441         t.appendChild( docinfo.createTextNode( e.text() ) );
00442         elementDocInfo.appendChild( author);
00443     }
00444 
00445     e = KoDom::namedItemNS( office, ooNS::dc, "title" );
00446     if ( !e.isNull() && !e.text().isEmpty() )
00447     {
00448         QDomElement about = docinfo.createElement( "about" );
00449         QDomElement title = docinfo.createElement( "title" );
00450         about.appendChild( title );
00451         title.appendChild( docinfo.createTextNode( e.text() ) );
00452         elementDocInfo.appendChild( about );
00453     }
00454 
00455     e = KoDom::namedItemNS( office, ooNS::dc, "description" );
00456     if ( !e.isNull() && !e.text().isEmpty() )
00457     {
00458         QDomElement about = elementDocInfo.namedItem( "about" ).toElement();
00459         if ( about.isNull() ) {
00460             about = docinfo.createElement( "about" );
00461             elementDocInfo.appendChild( about );
00462         }
00463         QDomElement title = docinfo.createElement( "abstract" );
00464         about.appendChild( title );
00465         title.appendChild( docinfo.createTextNode( e.text() ) );
00466     }
00467     e = KoDom::namedItemNS( office, ooNS::dc, "subject" );
00468     if ( !e.isNull() && !e.text().isEmpty() )
00469     {
00470         QDomElement about = elementDocInfo.namedItem( "about" ).toElement();
00471         if ( about.isNull() ) {
00472             about = docinfo.createElement( "about" );
00473             elementDocInfo.appendChild( about );
00474         }
00475         QDomElement subject = docinfo.createElement( "subject" );
00476         about.appendChild( subject );
00477         subject.appendChild( docinfo.createTextNode( e.text() ) );
00478     }
00479     e = KoDom::namedItemNS( office, ooNS::meta, "keywords" );
00480     if ( !e.isNull() )
00481     {
00482         QDomElement about = elementDocInfo.namedItem( "about" ).toElement();
00483         if ( about.isNull() ) {
00484             about = docinfo.createElement( "about" );
00485             elementDocInfo.appendChild( about );
00486         }
00487         QDomElement tmp = KoDom::namedItemNS( e, ooNS::meta, "keyword" );
00488         if ( !tmp.isNull() && !tmp.text().isEmpty() )
00489         {
00490             QDomElement keyword = docinfo.createElement( "keyword" );
00491             about.appendChild( keyword );
00492             keyword.appendChild( docinfo.createTextNode( tmp.text() ) );
00493         }
00494     }
00495 }
00496 
00497 KoFilter::ConversionStatus OoUtils::loadAndParse(const QString& fileName, QDomDocument& doc, KoStore *m_store )
00498 {
00499     kdDebug(30518) << "loadAndParse: Trying to open " << fileName << endl;
00500 
00501     if (!m_store->open(fileName))
00502     {
00503         kdWarning(30519) << "Entry " << fileName << " not found!" << endl;
00504         return KoFilter::FileNotFound;
00505     }
00506     KoFilter::ConversionStatus convertStatus = loadAndParse( m_store->device(),doc, fileName );
00507     m_store->close();
00508     return convertStatus;
00509 
00510 }
00511 
00512 KoFilter::ConversionStatus OoUtils::loadAndParse(QIODevice* io, QDomDocument& doc, const QString & fileName)
00513 {
00514     QXmlInputSource source( io );
00515     // Copied from QDomDocumentPrivate::setContent, to change the whitespace thing
00516     QXmlSimpleReader reader;
00517     KoDocument::setupXmlReader( reader, true /*namespaceProcessing*/ );
00518 
00519     // Error variables for QDomDocument::setContent
00520     QString errorMsg;
00521     int errorLine, errorColumn;
00522     if ( !doc.setContent( &source, &reader, &errorMsg, &errorLine, &errorColumn ) )
00523     {
00524         kdError(30519) << "Parsing error in " << fileName << "! Aborting!" << endl
00525             << " In line: " << errorLine << ", column: " << errorColumn << endl
00526             << " Error message: " << errorMsg << endl;
00527         return KoFilter::ParsingError;
00528     }
00529 
00530     kdDebug(30519) << "File " << fileName << " loaded and parsed!" << endl;
00531 
00532     return KoFilter::OK;
00533 
00534 }
00535 
00536 KoFilter::ConversionStatus OoUtils::loadAndParse(const QString& filename, QDomDocument& doc, KZip * m_zip)
00537 {
00538     kdDebug(30519) << "Trying to open " << filename << endl;
00539 
00540     if (!m_zip)
00541     {
00542         kdError(30519) << "No ZIP file!" << endl;
00543         return KoFilter::CreationError; // Should not happen
00544     }
00545 
00546     const KArchiveEntry* entry = m_zip->directory()->entry( filename );
00547     if (!entry)
00548     {
00549         kdWarning(30519) << "Entry " << filename << " not found!" << endl;
00550         return KoFilter::FileNotFound;
00551     }
00552     if (entry->isDirectory())
00553     {
00554         kdWarning(30519) << "Entry " << filename << " is a directory!" << endl;
00555         return KoFilter::WrongFormat;
00556     }
00557     const KZipFileEntry* f = static_cast<const KZipFileEntry *>(entry);
00558     kdDebug(30519) << "Entry " << filename << " has size " << f->size() << endl;
00559     QIODevice* io = f->device();
00560     KoFilter::ConversionStatus convertStatus = loadAndParse( io,doc, filename );
00561     delete io;
00562     return convertStatus;
00563 }
00564 
00565 KoFilter::ConversionStatus OoUtils::loadThumbnail( QImage& thumbnail, KZip * m_zip )
00566 {
00567     const QString filename( "Thumbnails/thumbnail.png" );
00568     kdDebug(30519) << "Trying to open thumbnail " << filename << endl;
00569 
00570     if (!m_zip)
00571     {
00572         kdError(30519) << "No ZIP file!" << endl;
00573         return KoFilter::CreationError; // Should not happen
00574     }
00575 
00576     const KArchiveEntry* entry = m_zip->directory()->entry( filename );
00577     if (!entry)
00578     {
00579         kdWarning(30519) << "Entry " << filename << " not found!" << endl;
00580         return KoFilter::FileNotFound;
00581     }
00582     if (entry->isDirectory())
00583     {
00584         kdWarning(30519) << "Entry " << filename << " is a directory!" << endl;
00585         return KoFilter::WrongFormat;
00586     }
00587     const KZipFileEntry* f = static_cast<const KZipFileEntry *>(entry);
00588     QIODevice* io=f->device();
00589     kdDebug(30519) << "Entry " << filename << " has size " << f->size() << endl;
00590 
00591     if ( ! io->open( IO_ReadOnly ) )
00592     {
00593         kdWarning(30519) << "Thumbnail could not be opened!" <<endl;
00594         delete io;
00595         return KoFilter::StupidError;
00596     }
00597 
00598     QImageIO imageIO( io, "PNG" );
00599     if ( ! imageIO.read() )
00600     {
00601         kdWarning(30519) << "Thumbnail could not be read!" <<endl;
00602         delete io;
00603         return KoFilter::StupidError;
00604     }
00605 
00606     io->close();
00607 
00608     thumbnail = imageIO.image();
00609 
00610     if ( thumbnail.isNull() )
00611     {
00612         kdWarning(30519) << "Read thumbnail is null!" <<endl;
00613         delete io;
00614         return KoFilter::StupidError;
00615     }
00616 
00617     delete io;
00618 
00619     kdDebug(30519) << "File " << filename << " loaded!" << endl;
00620 
00621     return KoFilter::OK;
00622 }
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