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okular/generators/xps/generator_xps.cpp

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/*
Copyright (C) 2006, 2009 Brad Hards <bradh@frogmouth.net>
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
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 "generator_xps.h"
#include <qdatetime.h>
#include <qfile.h>
#include <qlist.h>
#include <qpainter.h>
#include <qprinter.h>
#include <KAboutData>
#include <KLocalizedString>
#include <QUrl>
#include <QBuffer>
#include <QImageReader>
#include <QMutex>
#include <core/document.h>
#include <core/page.h>
#include <core/area.h>
#include <core/fileprinter.h>
OKULAR_EXPORT_PLUGIN(XpsGenerator, "libokularGenerator_xps.json")
Q_DECLARE_METATYPE( QGradient* )
Q_DECLARE_METATYPE( XpsPathFigure* )
Q_DECLARE_METATYPE( XpsPathGeometry* )
// From Qt4
static int hex2int(char hex)
{
QChar hexchar = QLatin1Char(hex);
int v;
if (hexchar.isDigit())
v = hexchar.digitValue();
else if (hexchar >= QLatin1Char('A') && hexchar <= QLatin1Char('F'))
v = hexchar.cell() - 'A' + 10;
else if (hexchar >= QLatin1Char('a') && hexchar <= QLatin1Char('f'))
v = hexchar.cell() - 'a' + 10;
else
v = -1;
return v;
}
// Modified from Qt4
static QColor hexToRgba(const QByteArray &name)
{
const int len = name.length();
if (len == 0 || name[0] != '#')
return QColor();
int r, g, b;
int a = 255;
if (len == 7) {
r = (hex2int(name[1]) << 4) + hex2int(name[2]);
g = (hex2int(name[3]) << 4) + hex2int(name[4]);
b = (hex2int(name[5]) << 4) + hex2int(name[6]);
} else if (len == 9) {
a = (hex2int(name[1]) << 4) + hex2int(name[2]);
r = (hex2int(name[3]) << 4) + hex2int(name[4]);
g = (hex2int(name[5]) << 4) + hex2int(name[6]);
b = (hex2int(name[7]) << 4) + hex2int(name[8]);
} else {
r = g = b = -1;
}
if ((uint)r > 255 || (uint)g > 255 || (uint)b > 255) {
return QColor();
}
return QColor(r,g,b,a);
}
static QRectF stringToRectF( const QString &data )
{
QStringList numbers = data.split(QLatin1Char(','));
QPointF origin( numbers.at(0).toDouble(), numbers.at(1).toDouble() );
QSizeF size( numbers.at(2).toDouble(), numbers.at(3).toDouble() );
return QRectF( origin, size );
}
static bool parseGUID( const QString &guidString, unsigned short guid[16]) {
if (guidString.length() <= 35) {
return false;
}
// Maps bytes to positions in guidString
const static int indexes[] = {6, 4, 2, 0, 11, 9, 16, 14, 19, 21, 24, 26, 28, 30, 32, 34};
for (int i = 0; i < 16; i++) {
int hex1 = hex2int(guidString[indexes[i]].cell());
int hex2 = hex2int(guidString[indexes[i]+1].cell());
if ((hex1 < 0) || (hex2 < 0))
{
return false;
}
guid[i] = hex1 * 16 + hex2;
}
return true;
}
// Read next token of abbreviated path data
static bool nextAbbPathToken(AbbPathToken *token)
{
int *curPos = &token->curPos;
QString data = token->data;
while ((*curPos < data.length()) && (data.at(*curPos).isSpace()))
{
(*curPos)++;
}
if (*curPos == data.length())
{
token->type = abtEOF;
return true;
}
QChar ch = data.at(*curPos);
if (ch.isNumber() || (ch == QLatin1Char('+')) || (ch == QLatin1Char('-')))
{
int start = *curPos;
while ((*curPos < data.length()) && (!data.at(*curPos).isSpace()) && (data.at(*curPos) != QLatin1Char(',') && (!data.at(*curPos).isLetter() || data.at(*curPos) == QLatin1Char('e'))))
{
(*curPos)++;
}
token->number = data.midRef(start, *curPos - start).toDouble();
token->type = abtNumber;
} else if (ch == QLatin1Char(','))
{
token->type = abtComma;
(*curPos)++;
} else if (ch.isLetter())
{
token->type = abtCommand;
token->command = data.at(*curPos).cell();
(*curPos)++;
} else
{
(*curPos)++;
return false;
}
return true;
}
/**
Read point (two reals delimited by comma) from abbreviated path data
*/
static QPointF getPointFromString(AbbPathToken *token, bool relative, const QPointF &currentPosition) {
//TODO Check grammar
QPointF result;
result.rx() = token->number;
nextAbbPathToken(token);
nextAbbPathToken(token); // ,
result.ry() = token->number;
nextAbbPathToken(token);
if (relative)
{
result += currentPosition;
}
return result;
}
/**
Read point (two reals delimited by comma) from string
*/
static QPointF getPointFromString(const QString &string)
{
const int commaPos = string.indexOf(QLatin1Char(QLatin1Char(',')));
if (commaPos == -1 || string.indexOf(QLatin1Char(QLatin1Char(',')), commaPos + 1) != -1)
return QPointF();
QPointF result;
bool ok = false;
QStringRef ref = string.midRef(0, commaPos);
result.setX(QString::fromRawData(ref.constData(), ref.count()).toDouble(&ok));
if (!ok)
return QPointF();
ref = string.midRef(commaPos + 1);
result.setY(QString::fromRawData(ref.constData(), ref.count()).toDouble(&ok));
if (!ok)
return QPointF();
return result;
}
static Qt::FillRule fillRuleFromString( const QString &data, Qt::FillRule def = Qt::OddEvenFill )
{
if ( data == QLatin1String( "EvenOdd" ) ) {
return Qt::OddEvenFill;
} else if ( data == QLatin1String( "NonZero" ) ) {
return Qt::WindingFill;
}
return def;
}
/**
Parse an abbreviated path "Data" description
\param data the string containing the whitespace separated values
\see XPS specification 4.2.3 and Appendix G
*/
static QPainterPath parseAbbreviatedPathData( const QString &data)
{
QPainterPath path;
AbbPathToken token;
token.data = data;
token.curPos = 0;
nextAbbPathToken(&token);
// Used by Smooth cubic curve (command s)
char lastCommand = ' ';
QPointF lastSecondControlPoint;
while (true)
{
if (token.type != abtCommand)
{
if (token.type != abtEOF)
{
qCWarning(OkularXpsDebug).nospace() << "Error in parsing abbreviated path data (" << token.type << "@" << token.curPos << "): " << data;
}
return path;
}
char command = QChar::fromLatin1(token.command).toLower().cell();
bool isRelative = QChar::fromLatin1(token.command).isLower();
QPointF currPos = path.currentPosition();
nextAbbPathToken(&token);
switch (command) {
case 'f':
int rule;
rule = (int)token.number;
if (rule == 0)
{
path.setFillRule(Qt::OddEvenFill);
}
else if (rule == 1)
{
// In xps specs rule 1 means NonZero fill. I think it's equivalent to WindingFill but I'm not sure
path.setFillRule(Qt::WindingFill);
}
nextAbbPathToken(&token);
break;
case 'm': // Move
while (token.type == abtNumber)
{
QPointF point = getPointFromString(&token, isRelative, currPos);
path.moveTo(point);
}
break;
case 'l': // Line
while (token.type == abtNumber)
{
QPointF point = getPointFromString(&token, isRelative, currPos);
path.lineTo(point);
}
break;
case 'h': // Horizontal line
while (token.type == abtNumber)
{
double x = token.number;
if ( isRelative )
x += path.currentPosition().x();
path.lineTo(x, path.currentPosition().y());
nextAbbPathToken(&token);
}
break;
case 'v': // Vertical line
while (token.type == abtNumber)
{
double y = token.number;
if ( isRelative )
y += path.currentPosition().y();
path.lineTo(path.currentPosition().x(), y);
nextAbbPathToken(&token);
}
break;
case 'c': // Cubic bezier curve
while (token.type == abtNumber)
{
QPointF firstControl = getPointFromString(&token, isRelative, currPos);
QPointF secondControl = getPointFromString(&token, isRelative, currPos);
QPointF endPoint = getPointFromString(&token, isRelative, currPos);
path.cubicTo(firstControl, secondControl, endPoint);
lastSecondControlPoint = secondControl;
}
break;
case 'q': // Quadratic bezier curve
while (token.type == abtNumber)
{
QPointF point1 = getPointFromString(&token, isRelative, currPos);
QPointF point2 = getPointFromString(&token, isRelative, currPos);
path.quadTo(point1, point2);
}
break;
case 's': // Smooth cubic bezier curve
while (token.type == abtNumber)
{
QPointF firstControl;
if ((lastCommand == 's') || (lastCommand == 'c'))
{
firstControl = lastSecondControlPoint + (lastSecondControlPoint + path.currentPosition());
}
else
{
firstControl = path.currentPosition();
}
QPointF secondControl = getPointFromString(&token, isRelative, currPos);
QPointF endPoint = getPointFromString(&token, isRelative, currPos);
path.cubicTo(firstControl, secondControl, endPoint);
}
break;
case 'a': // Arc
//TODO Implement Arc drawing
while (token.type == abtNumber)
{
/*QPointF rp =*/ getPointFromString(&token, isRelative, currPos);
/*double r = token.number;*/
nextAbbPathToken(&token);
/*double fArc = token.number; */
nextAbbPathToken(&token);
/*double fSweep = token.number; */
nextAbbPathToken(&token);
/*QPointF point = */getPointFromString(&token, isRelative, currPos);
}
break;
case 'z': // Close path
path.closeSubpath();
break;
}
lastCommand = command;
}
return path;
}
/**
Parse a "Matrix" attribute string
\param csv the comma separated list of values
\return the QTransform corresponding to the affine transform
given in the attribute
\see XPS specification 7.4.1
*/
static QTransform attsToMatrix( const QString &csv )
{
QStringList values = csv.split( QLatin1Char(',') );
if ( values.count() != 6 ) {
return QTransform(); // that is an identity matrix - no effect
}
return QTransform( values.at(0).toDouble(), values.at(1).toDouble(),
values.at(2).toDouble(), values.at(3).toDouble(),
values.at(4).toDouble(), values.at(5).toDouble() );
}
/**
\return Brush with given color or brush specified by reference to resource
*/
static QBrush parseRscRefColorForBrush( const QString &data )
{
if (data[0] == QLatin1Char('{')) {
//TODO
qCWarning(OkularXpsDebug) << "Reference" << data;
return QBrush();
} else {
return QBrush( hexToRgba( data.toLatin1() ) );
}
}
/**
\return Pen with given color or Pen specified by reference to resource
*/
static QPen parseRscRefColorForPen( const QString &data )
{
if (data[0] == QLatin1Char('{')) {
//TODO
qCWarning(OkularXpsDebug) << "Reference" << data;
return QPen();
} else {
return QPen( hexToRgba( data.toLatin1() ) );
}
}
/**
\return Matrix specified by given data or by referenced dictionary
*/
static QTransform parseRscRefMatrix( const QString &data )
{
if (data[0] == QLatin1Char('{')) {
//TODO
qCWarning(OkularXpsDebug) << "Reference" << data;
return QTransform();
} else {
return attsToMatrix( data );
}
}
/**
\return Path specified by given data or by referenced dictionary
*/
static QPainterPath parseRscRefPath( const QString &data )
{
if (data[0] == QLatin1Char('{')) {
//TODO
qCWarning(OkularXpsDebug) << "Reference" << data;
return QPainterPath();
} else {
return parseAbbreviatedPathData( data );
}
}
/**
\return The path of the entry
*/
static QString entryPath( const QString &entry )
{
const int index = entry.lastIndexOf( QChar::fromLatin1( '/' ) );
QString ret = QLatin1String( "/" ) + entry.mid( 0, index );
if ( index > 0 ) {
ret.append( QChar::fromLatin1( '/' ) );
}
return ret;
}
/**
\return The path of the entry
*/
static QString entryPath( const KZipFileEntry* entry )
{
return entryPath( entry->path() );
}
/**
\return The absolute path of the \p location, according to \p path if it's non-absolute
*/
static QString absolutePath( const QString &path, const QString &location )
{
QString retPath;
if ( location.startsWith(QLatin1Char( '/' ) )) {
// already absolute
retPath = location;
} else {
QUrl u = QUrl::fromLocalFile(path);
QUrl u2 = QUrl::fromLocalFile(location);
retPath = u.resolved(u2).toDisplayString(QUrl::PreferLocalFile);
}
// it seems paths & file names can also be percent-encoded
// (XPS won't ever finish surprising me)
if ( retPath.contains( QLatin1Char( '%' ) ) ) {
retPath = QUrl::fromPercentEncoding( retPath.toUtf8() );
}
return retPath;
}
/**
Read the content of an archive entry in both the cases:
a) single file
+ foobar
b) directory
+ foobar/
+ [0].piece
+ [1].piece
+ ...
+ [x].last.piece
\see XPS specification 10.1.2
*/
static QByteArray readFileOrDirectoryParts( const KArchiveEntry *entry, QString *pathOfFile = 0 )
{
QByteArray data;
if ( entry->isDirectory() ) {
const KArchiveDirectory* relDir = static_cast<const KArchiveDirectory *>( entry );
QStringList entries = relDir->entries();
qSort( entries );
Q_FOREACH ( const QString &entry, entries ) {
const KArchiveEntry* relSubEntry = relDir->entry( entry );
if ( !relSubEntry->isFile() )
continue;
const KZipFileEntry* relSubFile = static_cast<const KZipFileEntry *>( relSubEntry );
data.append( relSubFile->data() );
}
} else {
const KZipFileEntry* relFile = static_cast<const KZipFileEntry *>( entry );
data.append( relFile->data() );
if ( pathOfFile ) {
*pathOfFile = entryPath( relFile );
}
}
return data;
}
/**
Load the resource \p fileName from the specified \p archive using the case sensitivity \p cs
*/
static const KArchiveEntry* loadEntry( KZip *archive, const QString &fileName, Qt::CaseSensitivity cs )
{
// first attempt: loading the entry straight as requested
const KArchiveEntry* entry = archive->directory()->entry( fileName );
// in case sensitive mode, or if we actually found something, return what we found
if ( cs == Qt::CaseSensitive || entry ) {
return entry;
}
QString path;
QString entryName;
const int index = fileName.lastIndexOf( QChar::fromLatin1( '/' ) );
if ( index > 0 ) {
path = fileName.left( index );
entryName = fileName.mid( index + 1 );
} else {
path = QLatin1Char('/');
entryName = fileName;
}
const KArchiveEntry * newEntry = archive->directory()->entry( path );
if ( newEntry->isDirectory() ) {
const KArchiveDirectory* relDir = static_cast< const KArchiveDirectory * >( newEntry );
QStringList relEntries = relDir->entries();
qSort( relEntries );
Q_FOREACH ( const QString &relEntry, relEntries ) {
if ( relEntry.compare( entryName, Qt::CaseInsensitive ) == 0 ) {
return relDir->entry( relEntry );
}
}
}
return 0;
}
static const KZipFileEntry* loadFile( KZip *archive, const QString &fileName, Qt::CaseSensitivity cs )
{
const KArchiveEntry *entry = loadEntry( archive, fileName, cs );
return entry->isFile() ? static_cast< const KZipFileEntry * >( entry ) : 0;
}
/**
\return The name of a resource from the \p fileName
*/
static QString resourceName( const QString &fileName )
{
QString resource = fileName;
const int slashPos = fileName.lastIndexOf( QLatin1Char( '/' ) );
const int dotPos = fileName.lastIndexOf( QLatin1Char( '.' ) );
if ( slashPos > -1 ) {
if ( dotPos > -1 && dotPos > slashPos ) {
resource = fileName.mid( slashPos + 1, dotPos - slashPos - 1 );
} else {
resource = fileName.mid( slashPos + 1 );
}
}
return resource;
}
static QColor interpolatedColor( const QColor &c1, const QColor &c2 )
{
QColor res;
res.setAlpha( ( c1.alpha() + c2.alpha() ) / 2 );
res.setRed( ( c1.red() + c2.red() ) / 2 );
res.setGreen( ( c1.green() + c2.green() ) / 2 );
res.setBlue( ( c1.blue() + c2.blue() ) / 2 );
return res;
}
static bool xpsGradientLessThan( const XpsGradient &g1, const XpsGradient &g2 )
{
return qFuzzyCompare( g1.offset, g2.offset )
? g1.color.name() < g2.color.name()
: g1.offset < g2.offset;
}
static int xpsGradientWithOffset( const QList<XpsGradient> &gradients, double offset )
{
int i = 0;
Q_FOREACH ( const XpsGradient &grad, gradients ) {
if ( grad.offset == offset ) {
return i;
}
++i;
}
return -1;
}
/**
Preprocess a list of gradients.
\see XPS specification 11.3.1.1
*/
static void preprocessXpsGradients( QList<XpsGradient> &gradients )
{
if ( gradients.isEmpty() )
return;
// sort the gradients (case 1.)
qStableSort( gradients.begin(), gradients.end(), xpsGradientLessThan );
// no gradient with stop 0.0 (case 2.)
if ( xpsGradientWithOffset( gradients, 0.0 ) == -1 ) {
int firstGreaterThanZero = 0;
while ( firstGreaterThanZero < gradients.count() && gradients.at( firstGreaterThanZero ).offset < 0.0 )
++firstGreaterThanZero;
// case 2.a: no gradients with stop less than 0.0
if ( firstGreaterThanZero == 0 ) {
gradients.prepend( XpsGradient( 0.0, gradients.first().color ) );
}
// case 2.b: some gradients with stop more than 0.0
else if ( firstGreaterThanZero != gradients.count() ) {
QColor col1 = gradients.at( firstGreaterThanZero - 1 ).color;
QColor col2 = gradients.at( firstGreaterThanZero ).color;
for ( int i = 0; i < firstGreaterThanZero; ++i ) {
gradients.removeFirst();
}
gradients.prepend( XpsGradient( 0.0, interpolatedColor( col1, col2 ) ) );
}
// case 2.c: no gradients with stop more than 0.0
else {
XpsGradient newGrad( 0.0, gradients.last().color );
gradients.clear();
gradients.append( newGrad );
}
}
if ( gradients.isEmpty() )
return;
// no gradient with stop 1.0 (case 3.)
if ( xpsGradientWithOffset( gradients, 1.0 ) == -1 ) {
int firstLessThanOne = gradients.count() - 1;
while ( firstLessThanOne >= 0 && gradients.at( firstLessThanOne ).offset > 1.0 )
--firstLessThanOne;
// case 2.a: no gradients with stop greater than 1.0
if ( firstLessThanOne == gradients.count() - 1 ) {
gradients.append( XpsGradient( 1.0, gradients.last().color ) );
}
// case 2.b: some gradients with stop more than 1.0
else if ( firstLessThanOne != -1 ) {
QColor col1 = gradients.at( firstLessThanOne ).color;
QColor col2 = gradients.at( firstLessThanOne + 1 ).color;
for ( int i = firstLessThanOne + 1; i < gradients.count(); ++i ) {
gradients.removeLast();
}
gradients.append( XpsGradient( 1.0, interpolatedColor( col1, col2 ) ) );
}
// case 2.c: no gradients with stop less than 1.0
else {
XpsGradient newGrad( 1.0, gradients.first().color );
gradients.clear();
gradients.append( newGrad );
}
}
}
static void addXpsGradientsToQGradient( const QList<XpsGradient> &gradients, QGradient *qgrad )
{
Q_FOREACH ( const XpsGradient &grad, gradients ) {
qgrad->setColorAt( grad.offset, grad.color );
}
}
static void applySpreadStyleToQGradient( const QString &style, QGradient *qgrad )
{
if ( style.isEmpty() )
return;
if ( style == QLatin1String( "Pad" ) ) {
qgrad->setSpread( QGradient::PadSpread );
} else if ( style == QLatin1String( "Reflect" ) ) {
qgrad->setSpread( QGradient::ReflectSpread );
} else if ( style == QLatin1String( "Repeat" ) ) {
qgrad->setSpread( QGradient::RepeatSpread );
}
}
/**
Read an UnicodeString
\param string the raw value of UnicodeString
\see XPS specification 5.1.4
*/
static QString unicodeString( const QString &raw )
{
QString ret;
if ( raw.startsWith( QLatin1String( "{}" ) ) ) {
ret = raw.mid( 2 );
} else {
ret = raw;
}
return ret;
}
XpsHandler::XpsHandler(XpsPage *page): m_page(page)
{
m_painter = NULL;
}
XpsHandler::~XpsHandler()
{
}
bool XpsHandler::startDocument()
{
qCWarning(OkularXpsDebug) << "start document" << m_page->m_fileName ;
XpsRenderNode node;
node.name = QStringLiteral("document");
m_nodes.push(node);
return true;
}
bool XpsHandler::startElement( const QString &nameSpace,
const QString &localName,
const QString &qname,
const QXmlAttributes & atts )
{
Q_UNUSED( nameSpace )
Q_UNUSED( qname )
XpsRenderNode node;
node.name = localName;
node.attributes = atts;
processStartElement( node );
m_nodes.push(node);
return true;
}
bool XpsHandler::endElement( const QString &nameSpace,
const QString &localName,
const QString &qname)
{
Q_UNUSED( nameSpace )
Q_UNUSED( qname )
XpsRenderNode node = m_nodes.pop();
if (node.name != localName) {
qCWarning(OkularXpsDebug) << "Name doesn't match";
}
processEndElement( node );
node.children.clear();
m_nodes.top().children.append(node);
return true;
}
void XpsHandler::processGlyph( XpsRenderNode &node )
{
//TODO Currently ignored attributes: CaretStops, DeviceFontName, IsSideways, OpacityMask, Name, FixedPage.NavigateURI, xml:lang, x:key
//TODO Indices is only partially implemented
//TODO Currently ignored child elements: Clip, OpacityMask
//Handled separately: RenderTransform
QString att;
m_painter->save();
// Get font (doesn't work well because qt doesn't allow to load font from file)
// This works despite the fact that font size isn't specified in points as required by qt. It's because I set point size to be equal to drawing unit.
float fontSize = node.attributes.value(QStringLiteral("FontRenderingEmSize")).toFloat();
// qCWarning(OkularXpsDebug) << "Font Rendering EmSize:" << fontSize;
// a value of 0.0 means the text is not visible (see XPS specs, chapter 12, "Glyphs")
if ( fontSize < 0.1 ) {
m_painter->restore();
return;
}
QFont font = m_page->m_file->getFontByName( node.attributes.value(QStringLiteral("FontUri")), fontSize );
att = node.attributes.value( QStringLiteral("StyleSimulations") );
if ( !att.isEmpty() ) {
if ( att == QLatin1String( "ItalicSimulation" ) ) {
font.setItalic( true );
} else if ( att == QLatin1String( "BoldSimulation" ) ) {
font.setBold( true );
} else if ( att == QLatin1String( "BoldItalicSimulation" ) ) {
font.setItalic( true );
font.setBold( true );
}
}
m_painter->setFont(font);
//Origin
QPointF origin( node.attributes.value(QStringLiteral("OriginX")).toDouble(), node.attributes.value(QStringLiteral("OriginY")).toDouble() );
//Fill
QBrush brush;
att = node.attributes.value(QStringLiteral("Fill"));
if (att.isEmpty()) {
QVariant data = node.getChildData( QStringLiteral("Glyphs.Fill") );
if (data.canConvert<QBrush>()) {
brush = data.value<QBrush>();
} else {
// no "Fill" attribute and no "Glyphs.Fill" child, so show nothing
// (see XPS specs, 5.10)
m_painter->restore();
return;
}
} else {
brush = parseRscRefColorForBrush( att );
if ( brush.style() > Qt::NoBrush && brush.style() < Qt::LinearGradientPattern
&& brush.color().alpha() == 0 ) {
m_painter->restore();
return;
}
}
m_painter->setBrush( brush );
m_painter->setPen( QPen( brush, 0 ) );
// Opacity
att = node.attributes.value(QStringLiteral("Opacity"));
if (! att.isEmpty()) {
bool ok = true;
double value = att.toDouble( &ok );
if ( ok && value >= 0.1 ) {
m_painter->setOpacity( value );
} else {
m_painter->restore();
return;
}
}
//RenderTransform
att = node.attributes.value(QStringLiteral("RenderTransform"));
if (!att.isEmpty()) {
m_painter->setWorldTransform( parseRscRefMatrix( att ), true);
}
// Clip
att = node.attributes.value( QStringLiteral("Clip") );
if ( !att.isEmpty() ) {
QPainterPath clipPath = parseRscRefPath( att );
if ( !clipPath.isEmpty() ) {
m_painter->setClipPath( clipPath );
}
}
// BiDiLevel - default Left-to-Right
m_painter->setLayoutDirection( Qt::LeftToRight );
att = node.attributes.value( QStringLiteral("BiDiLevel") );
if ( !att.isEmpty() ) {
if ( (att.toInt() % 2) == 1 ) {
// odd BiDiLevel, so Right-to-Left
m_painter->setLayoutDirection( Qt::RightToLeft );
}
}
// Indices - partial handling only
att = node.attributes.value( QStringLiteral("Indices") );
QList<qreal> advanceWidths;
if ( ! att.isEmpty() ) {
QStringList indicesElements = att.split( QLatin1Char(';') );
for( int i = 0; i < indicesElements.size(); ++i ) {
if ( indicesElements.at(i).contains( QStringLiteral(",") ) ) {
QStringList parts = indicesElements.at(i).split( QLatin1Char(',') );
if (parts.size() == 2 ) {
// regular advance case, no offsets
advanceWidths.append( parts.at(1).toDouble() * fontSize / 100.0 );
} else if (parts.size() == 3 ) {
// regular advance case, with uOffset
qreal AdvanceWidth = parts.at(1).toDouble() * fontSize / 100.0 ;
qreal uOffset = parts.at(2).toDouble() / 100.0;
advanceWidths.append( AdvanceWidth + uOffset );
} else {
// has vertical offset, but don't know how to handle that yet
qCWarning(OkularXpsDebug) << "Unhandled Indices element: " << indicesElements.at(i);
advanceWidths.append( -1.0 );
}
} else {
// no special advance case
advanceWidths.append( -1.0 );
}
}
}
// UnicodeString
QString stringToDraw( unicodeString( node.attributes.value( QStringLiteral("UnicodeString") ) ) );
QPointF originAdvance(0, 0);
QFontMetrics metrics = m_painter->fontMetrics();
for ( int i = 0; i < stringToDraw.size(); ++i ) {
QChar thisChar = stringToDraw.at( i );
m_painter->drawText( origin + originAdvance, QString( thisChar ) );
const qreal advanceWidth = advanceWidths.value( i, qreal(-1.0) );
if ( advanceWidth > 0.0 ) {
originAdvance.rx() += advanceWidth;
} else {
originAdvance.rx() += metrics.width( thisChar );
}
}
// qCWarning(OkularXpsDebug) << "Glyphs: " << atts.value("Fill") << ", " << atts.value("FontUri");
// qCWarning(OkularXpsDebug) << " Origin: " << atts.value("OriginX") << "," << atts.value("OriginY");
// qCWarning(OkularXpsDebug) << " Unicode: " << atts.value("UnicodeString");
m_painter->restore();
}
void XpsHandler::processFill( XpsRenderNode &node )
{
//TODO Ignored child elements: VirtualBrush
if (node.children.size() != 1) {
qCWarning(OkularXpsDebug) << "Fill element should have exactly one child";
} else {
node.data = node.children[0].data;
}
}
void XpsHandler::processStroke( XpsRenderNode &node )
{
//TODO Ignored child elements: VirtualBrush
if (node.children.size() != 1) {
qCWarning(OkularXpsDebug) << "Stroke element should have exactly one child";
} else {
node.data = node.children[0].data;
}
}
void XpsHandler::processImageBrush( XpsRenderNode &node )
{
//TODO Ignored attributes: Opacity, x:key, TileMode, ViewBoxUnits, ViewPortUnits
//TODO Check whether transformation works for non standard situations (viewbox different that whole image, Transform different that simple move & scale, Viewport different than [0, 0, 1, 1]
QString att;
QBrush brush;
QRectF viewport = stringToRectF( node.attributes.value( QStringLiteral("Viewport") ) );
QRectF viewbox = stringToRectF( node.attributes.value( QStringLiteral("Viewbox") ) );
QImage image = m_page->loadImageFromFile( node.attributes.value( QStringLiteral("ImageSource") ) );
// Matrix which can transform [0, 0, 1, 1] rectangle to given viewbox
QTransform viewboxMatrix = QTransform( viewbox.width() * image.physicalDpiX() / 96, 0, 0, viewbox.height() * image.physicalDpiY() / 96, viewbox.x(), viewbox.y() );
// Matrix which can transform [0, 0, 1, 1] rectangle to given viewport
//TODO Take ViewPort into account
QTransform viewportMatrix;
att = node.attributes.value( QStringLiteral("Transform") );
if ( att.isEmpty() ) {
QVariant data = node.getChildData( QStringLiteral("ImageBrush.Transform") );
if (data.canConvert<QTransform>()) {
viewportMatrix = data.value<QTransform>();
} else {
viewportMatrix = QTransform();
}
} else {
viewportMatrix = parseRscRefMatrix( att );
}
viewportMatrix = viewportMatrix * QTransform( viewport.width(), 0, 0, viewport.height(), viewport.x(), viewport.y() );
brush = QBrush( image );
brush.setTransform( viewboxMatrix.inverted() * viewportMatrix );
node.data = qVariantFromValue( brush );
}
void XpsHandler::processPath( XpsRenderNode &node )
{
//TODO Ignored attributes: Clip, OpacityMask, StrokeEndLineCap, StorkeStartLineCap, Name, FixedPage.NavigateURI, xml:lang, x:key, AutomationProperties.Name, AutomationProperties.HelpText, SnapsToDevicePixels
//TODO Ignored child elements: RenderTransform, Clip, OpacityMask
// Handled separately: RenderTransform
m_painter->save();
QString att;
QVariant data;
// Get path
XpsPathGeometry * pathdata = node.getChildData( QStringLiteral("Path.Data") ).value< XpsPathGeometry * >();
att = node.attributes.value( QStringLiteral("Data") );
if (! att.isEmpty() ) {
QPainterPath path = parseRscRefPath( att );
delete pathdata;
pathdata = new XpsPathGeometry();
pathdata->paths.append( new XpsPathFigure( path, true ) );
}
if ( !pathdata ) {
// nothing to draw
m_painter->restore();
return;
}
// Set Fill
att = node.attributes.value( QStringLiteral("Fill") );
QBrush brush;
if (! att.isEmpty() ) {
brush = parseRscRefColorForBrush( att );
} else {
data = node.getChildData( QStringLiteral("Path.Fill") );
if (data.canConvert<QBrush>()) {
brush = data.value<QBrush>();
}
}
m_painter->setBrush( brush );
// Stroke (pen)
att = node.attributes.value( QStringLiteral("Stroke") );
QPen pen( Qt::transparent );
if (! att.isEmpty() ) {
pen = parseRscRefColorForPen( att );
} else {
data = node.getChildData( QStringLiteral("Path.Stroke") );
if (data.canConvert<QBrush>()) {
pen.setBrush( data.value<QBrush>() );
}
}
att = node.attributes.value( QStringLiteral("StrokeThickness") );
if (! att.isEmpty() ) {
bool ok = false;
int thickness = att.toInt( &ok );
if (ok)
pen.setWidth( thickness );
}
att = node.attributes.value( QStringLiteral("StrokeDashArray") );
if ( !att.isEmpty() ) {
const QStringList pieces = att.split( QLatin1Char( ' ' ), QString::SkipEmptyParts );
QVector<qreal> dashPattern( pieces.count() );
bool ok = false;
for ( int i = 0; i < pieces.count(); ++i ) {
qreal value = pieces.at( i ).toInt( &ok );
if ( ok ) {
dashPattern[i] = value;
} else {
break;
}
}
if ( ok ) {
pen.setDashPattern( dashPattern );
}
}
att = node.attributes.value( QStringLiteral("StrokeDashOffset") );
if ( !att.isEmpty() ) {
bool ok = false;
int offset = att.toInt( &ok );
if ( ok )
pen.setDashOffset( offset );
}
att = node.attributes.value( QStringLiteral("StrokeDashCap") );
if ( !att.isEmpty() ) {
Qt::PenCapStyle cap = Qt::FlatCap;
if ( att == QLatin1String( "Flat" ) ) {
cap = Qt::FlatCap;
} else if ( att == QLatin1String( "Round" ) ) {
cap = Qt::RoundCap;
} else if ( att == QLatin1String( "Square" ) ) {
cap = Qt::SquareCap;
}
// ### missing "Triangle"
pen.setCapStyle( cap );
}
att = node.attributes.value( QStringLiteral("StrokeLineJoin") );
if ( !att.isEmpty() ) {
Qt::PenJoinStyle joinStyle = Qt::MiterJoin;
if ( att == QLatin1String( "Miter" ) ) {
joinStyle = Qt::MiterJoin;
} else if ( att == QLatin1String( "Bevel" ) ) {
joinStyle = Qt::BevelJoin;
} else if ( att == QLatin1String( "Round" ) ) {
joinStyle = Qt::RoundJoin;
}
pen.setJoinStyle( joinStyle );
}
att = node.attributes.value( QStringLiteral("StrokeMiterLimit") );
if ( !att.isEmpty() ) {
bool ok = false;
double limit = att.toDouble( &ok );
if ( ok ) {
// we have to divide it by two, as XPS consider half of the stroke width,
// while Qt the whole of it
pen.setMiterLimit( limit / 2 );
}
}
m_painter->setPen( pen );
// Opacity
att = node.attributes.value(QStringLiteral("Opacity"));
if (! att.isEmpty()) {
m_painter->setOpacity(att.toDouble());
}
// RenderTransform
att = node.attributes.value( QStringLiteral("RenderTransform") );
if (! att.isEmpty() ) {
m_painter->setWorldTransform( parseRscRefMatrix( att ), true );
}
if ( !pathdata->transform.isIdentity() ) {
m_painter->setWorldTransform( pathdata->transform, true );
}
Q_FOREACH ( XpsPathFigure *figure, pathdata->paths ) {
m_painter->setBrush( figure->isFilled ? brush : QBrush() );
m_painter->drawPath( figure->path );
}
delete pathdata;
m_painter->restore();
}
void XpsHandler::processPathData( XpsRenderNode &node )
{
if (node.children.size() != 1) {
qCWarning(OkularXpsDebug) << "Path.Data element should have exactly one child";
} else {
node.data = node.children[0].data;
}
}
void XpsHandler::processPathGeometry( XpsRenderNode &node )
{
XpsPathGeometry * geom = new XpsPathGeometry();
Q_FOREACH ( const XpsRenderNode &child, node.children ) {
if ( child.data.canConvert<XpsPathFigure *>() ) {
XpsPathFigure *figure = child.data.value<XpsPathFigure *>();
geom->paths.append( figure );
}
}
QString att;
att = node.attributes.value( QStringLiteral("Figures") );
if ( !att.isEmpty() ) {
QPainterPath path = parseRscRefPath( att );
qDeleteAll( geom->paths );
geom->paths.clear();
geom->paths.append( new XpsPathFigure( path, true ) );
}
att = node.attributes.value( QStringLiteral("FillRule") );
if ( !att.isEmpty() ) {
geom->fillRule = fillRuleFromString( att );
}
// Transform
att = node.attributes.value( QStringLiteral("Transform") );
if ( !att.isEmpty() ) {
geom->transform = parseRscRefMatrix( att );
}
if ( !geom->paths.isEmpty() ) {
node.data = qVariantFromValue( geom );
} else {
delete geom;
}
}
void XpsHandler::processPathFigure( XpsRenderNode &node )
{
//TODO Ignored child elements: ArcSegment
QString att;
QPainterPath path;
att = node.attributes.value( QStringLiteral("StartPoint") );
if ( !att.isEmpty() ) {
QPointF point = getPointFromString( att );
path.moveTo( point );
} else {
return;
}
Q_FOREACH ( const XpsRenderNode &child, node.children ) {
bool isStroked = true;
att = node.attributes.value( QStringLiteral("IsStroked") );
if ( !att.isEmpty() ) {
isStroked = att == QLatin1String( "true" );
}
if ( !isStroked ) {
continue;
}
// PolyLineSegment
if ( child.name == QLatin1String( "PolyLineSegment" ) ) {
att = child.attributes.value( QStringLiteral("Points") );
if ( !att.isEmpty() ) {
const QStringList points = att.split( QLatin1Char( ' ' ), QString::SkipEmptyParts );
Q_FOREACH ( const QString &p, points ) {
QPointF point = getPointFromString( p );
path.lineTo( point );
}
}
}
// PolyBezierSegment
else if ( child.name == QLatin1String( "PolyBezierSegment" ) ) {
att = child.attributes.value( QStringLiteral("Points") );
if ( !att.isEmpty() ) {
const QStringList points = att.split( QLatin1Char( ' ' ), QString::SkipEmptyParts );
if ( points.count() % 3 == 0 ) {
for ( int i = 0; i < points.count(); ) {
QPointF firstControl = getPointFromString( points.at( i++ ) );
QPointF secondControl = getPointFromString( points.at( i++ ) );
QPointF endPoint = getPointFromString( points.at( i++ ) );
path.cubicTo(firstControl, secondControl, endPoint);
}
}
}
}
// PolyQuadraticBezierSegment
else if ( child.name == QLatin1String( "PolyQuadraticBezierSegment" ) ) {
att = child.attributes.value( QStringLiteral("Points") );
if ( !att.isEmpty() ) {
const QStringList points = att.split( QLatin1Char( ' ' ), QString::SkipEmptyParts );
if ( points.count() % 2 == 0 ) {
for ( int i = 0; i < points.count(); ) {
QPointF point1 = getPointFromString( points.at( i++ ) );
QPointF point2 = getPointFromString( points.at( i++ ) );
path.quadTo( point1, point2 );
}
}
}
}
}
bool closePath = false;
att = node.attributes.value( QStringLiteral("IsClosed") );
if ( !att.isEmpty() ) {
closePath = att == QLatin1String( "true" );
}
if ( closePath ) {
path.closeSubpath();
}
bool isFilled = true;
att = node.attributes.value( QStringLiteral("IsFilled") );
if ( !att.isEmpty() ) {
isFilled = att == QLatin1String( "true" );
}
if ( !path.isEmpty() ) {
node.data = qVariantFromValue( new XpsPathFigure( path, isFilled ) );
}
}
void XpsHandler::processStartElement( XpsRenderNode &node )
{
if (node.name == QLatin1String("Canvas")) {
m_painter->save();
QString att = node.attributes.value( QStringLiteral("RenderTransform") );
if ( !att.isEmpty() ) {
m_painter->setWorldTransform( parseRscRefMatrix( att ), true );
}
att = node.attributes.value( QStringLiteral("Opacity") );
if ( !att.isEmpty() ) {
double value = att.toDouble();
if ( value > 0.0 && value <= 1.0 ) {
m_painter->setOpacity( m_painter->opacity() * value );
} else {
// setting manually to 0 is necessary to "disable"
// all the stuff inside
m_painter->setOpacity( 0.0 );
}
}
}
}
void XpsHandler::processEndElement( XpsRenderNode &node )
{
if (node.name == QLatin1String("Glyphs")) {
processGlyph( node );
} else if (node.name == QLatin1String("Path")) {
processPath( node );
} else if (node.name == QLatin1String("MatrixTransform")) {
//TODO Ignoring x:key
node.data = qVariantFromValue( QTransform( attsToMatrix( node.attributes.value( QStringLiteral("Matrix") ) ) ) );
} else if ((node.name == QLatin1String("Canvas.RenderTransform")) || (node.name == QLatin1String("Glyphs.RenderTransform")) || (node.name == QLatin1String("Path.RenderTransform"))) {
QVariant data = node.getRequiredChildData( QStringLiteral("MatrixTransform") );
if (data.canConvert<QTransform>()) {
m_painter->setWorldTransform( data.value<QTransform>(), true );
}
} else if (node.name == QLatin1String("Canvas")) {
m_painter->restore();
} else if ((node.name == QLatin1String("Path.Fill")) || (node.name == QLatin1String("Glyphs.Fill"))) {
processFill( node );
} else if (node.name == QLatin1String("Path.Stroke")) {
processStroke( node );
} else if (node.name == QLatin1String("SolidColorBrush")) {
//TODO Ignoring opacity, x:key
node.data = qVariantFromValue( QBrush( QColor( hexToRgba( node.attributes.value( QStringLiteral("Color") ).toLatin1() ) ) ) );
} else if (node.name == QLatin1String("ImageBrush")) {
processImageBrush( node );
} else if (node.name == QLatin1String("ImageBrush.Transform")) {
node.data = node.getRequiredChildData( QStringLiteral("MatrixTransform") );
} else if (node.name == QLatin1String("LinearGradientBrush")) {
XpsRenderNode * gradients = node.findChild( QStringLiteral("LinearGradientBrush.GradientStops") );
if ( gradients && gradients->data.canConvert< QGradient * >() ) {
QPointF start = getPointFromString( node.attributes.value( QStringLiteral("StartPoint") ) );
QPointF end = getPointFromString( node.attributes.value( QStringLiteral("EndPoint") ) );
QLinearGradient * qgrad = static_cast< QLinearGradient * >( gradients->data.value< QGradient * >() );
qgrad->setStart( start );
qgrad->setFinalStop( end );
applySpreadStyleToQGradient( node.attributes.value( QStringLiteral("SpreadMethod") ), qgrad );
node.data = qVariantFromValue( QBrush( *qgrad ) );
delete qgrad;
}
} else if (node.name == QLatin1String("RadialGradientBrush")) {
XpsRenderNode * gradients = node.findChild( QStringLiteral("RadialGradientBrush.GradientStops") );
if ( gradients && gradients->data.canConvert< QGradient * >() ) {
QPointF center = getPointFromString( node.attributes.value( QStringLiteral("Center") ) );
QPointF origin = getPointFromString( node.attributes.value( QStringLiteral("GradientOrigin") ) );
double radiusX = node.attributes.value( QStringLiteral("RadiusX") ).toDouble();
double radiusY = node.attributes.value( QStringLiteral("RadiusY") ).toDouble();
QRadialGradient * qgrad = static_cast< QRadialGradient * >( gradients->data.value< QGradient * >() );
qgrad->setCenter( center );
qgrad->setFocalPoint( origin );
// TODO what in case of different radii?
qgrad->setRadius( qMin( radiusX, radiusY ) );
applySpreadStyleToQGradient( node.attributes.value( QStringLiteral("SpreadMethod") ), qgrad );
node.data = qVariantFromValue( QBrush( *qgrad ) );
delete qgrad;
}
} else if (node.name == QLatin1String("LinearGradientBrush.GradientStops")) {
QList<XpsGradient> gradients;
Q_FOREACH ( const XpsRenderNode &child, node.children ) {
double offset = child.attributes.value( QStringLiteral("Offset") ).toDouble();
QColor color = hexToRgba( child.attributes.value( QStringLiteral("Color") ).toLatin1() );
gradients.append( XpsGradient( offset, color ) );
}
preprocessXpsGradients( gradients );
if ( !gradients.isEmpty() ) {
QLinearGradient * qgrad = new QLinearGradient();
addXpsGradientsToQGradient( gradients, qgrad );
node.data = qVariantFromValue< QGradient * >( qgrad );
}
} else if (node.name == QLatin1String("RadialGradientBrush.GradientStops")) {
QList<XpsGradient> gradients;
Q_FOREACH ( const XpsRenderNode &child, node.children ) {
double offset = child.attributes.value( QStringLiteral("Offset") ).toDouble();
QColor color = hexToRgba( child.attributes.value( QStringLiteral("Color") ).toLatin1() );
gradients.append( XpsGradient( offset, color ) );
}
preprocessXpsGradients( gradients );
if ( !gradients.isEmpty() ) {
QRadialGradient * qgrad = new QRadialGradient();
addXpsGradientsToQGradient( gradients, qgrad );
node.data = qVariantFromValue< QGradient * >( qgrad );
}
} else if (node.name == QLatin1String("PathFigure")) {
processPathFigure( node );
} else if (node.name == QLatin1String("PathGeometry")) {
processPathGeometry( node );
} else if (node.name == QLatin1String("Path.Data")) {
processPathData( node );
} else {
//qCWarning(OkularXpsDebug) << "Unknown element: " << node->name;
}
}
XpsPage::XpsPage(XpsFile *file, const QString &fileName): m_file( file ),
m_fileName( fileName ), m_pageIsRendered(false)
{
m_pageImage = NULL;
// qCWarning(OkularXpsDebug) << "page file name: " << fileName;
const KZipFileEntry* pageFile = static_cast<const KZipFileEntry *>(m_file->xpsArchive()->directory()->entry( fileName ));
QXmlStreamReader xml;
xml.addData( readFileOrDirectoryParts( pageFile ) );
while ( !xml.atEnd() )
{
xml.readNext();
if ( xml.isStartElement() && ( xml.name() == QStringLiteral("FixedPage") ) )
{
QXmlStreamAttributes attributes = xml.attributes();
m_pageSize.setWidth( attributes.value( QStringLiteral("Width") ).toString().toDouble() );
m_pageSize.setHeight( attributes.value( QStringLiteral("Height") ).toString().toDouble() );
break;
}
}
if ( xml.error() )
{
qCWarning(OkularXpsDebug) << "Could not parse XPS page:" << xml.errorString();
}
}
XpsPage::~XpsPage()
{
delete m_pageImage;
}
bool XpsPage::renderToImage( QImage *p )
{
if ((m_pageImage == NULL) || (m_pageImage->size() != p->size())) {
delete m_pageImage;
m_pageImage = new QImage( p->size(), QImage::Format_ARGB32 );
// Set one point = one drawing unit. Useful for fonts, because xps specifies font size using drawing units, not points as usual
m_pageImage->setDotsPerMeterX( 2835 );
m_pageImage->setDotsPerMeterY( 2835 );
m_pageIsRendered = false;
}
if (! m_pageIsRendered) {
m_pageImage->fill( qRgba( 255, 255, 255, 255 ) );
QPainter painter( m_pageImage );
renderToPainter( &painter );
m_pageIsRendered = true;
}
*p = *m_pageImage;
return true;
}
bool XpsPage::renderToPainter( QPainter *painter )
{
XpsHandler handler( this );
handler.m_painter = painter;
handler.m_painter->setWorldTransform(QTransform().scale((qreal)painter->device()->width() / size().width(), (qreal)painter->device()->height() / size().height()));
QXmlSimpleReader parser;
parser.setContentHandler( &handler );
parser.setErrorHandler( &handler );
const KZipFileEntry* pageFile = static_cast<const KZipFileEntry *>(m_file->xpsArchive()->directory()->entry( m_fileName ));
QByteArray data = readFileOrDirectoryParts( pageFile );
QBuffer buffer( &data );
QXmlInputSource source( &buffer );
bool ok = parser.parse( source );
qCWarning(OkularXpsDebug) << "Parse result: " << ok;
return true;
}
QSizeF XpsPage::size() const
{
return m_pageSize;
}
QFont XpsFile::getFontByName( const QString &fileName, float size )
{
// qCWarning(OkularXpsDebug) << "trying to get font: " << fileName << ", size: " << size;
int index = m_fontCache.value(fileName, -1);
if (index == -1)
{
index = loadFontByName(fileName);
m_fontCache[fileName] = index;
}
if ( index == -1 ) {
qCWarning(OkularXpsDebug) << "Requesting uknown font:" << fileName;
return QFont();
}
const QStringList fontFamilies = m_fontDatabase.applicationFontFamilies( index );
if ( fontFamilies.isEmpty() ) {
qCWarning(OkularXpsDebug) << "The unexpected has happened. No font family for a known font:" << fileName << index;
return QFont();
}
const QString fontFamily = fontFamilies[0];
const QStringList fontStyles = m_fontDatabase.styles( fontFamily );
if ( fontStyles.isEmpty() ) {
qCWarning(OkularXpsDebug) << "The unexpected has happened. No font style for a known font family:" << fileName << index << fontFamily ;
return QFont();
}
const QString fontStyle = fontStyles[0];
return m_fontDatabase.font(fontFamily, fontStyle, qRound(size));
}
int XpsFile::loadFontByName( const QString &fileName )
{
// qCWarning(OkularXpsDebug) << "font file name: " << fileName;
const KArchiveEntry* fontFile = loadEntry( m_xpsArchive, fileName, Qt::CaseInsensitive );
if ( !fontFile ) {
return -1;
}
QByteArray fontData = readFileOrDirectoryParts( fontFile ); // once per file, according to the docs
int result = m_fontDatabase.addApplicationFontFromData( fontData );
if (-1 == result) {
// Try to deobfuscate font
// TODO Use deobfuscation depending on font content type, don't do it always when standard loading fails
const QString baseName = resourceName( fileName );
unsigned short guid[16];
if (!parseGUID(baseName, guid))
{
qCWarning(OkularXpsDebug) << "File to load font - file name isn't a GUID";
}
else
{
if (fontData.length() < 32)
{
qCWarning(OkularXpsDebug) << "Font file is too small";
} else {
// Obfuscation - xor bytes in font binary with bytes from guid (font's filename)
const static int mapping[] = {15, 14, 13, 12, 11, 10, 9, 8, 6, 7, 4, 5, 0, 1, 2, 3};
for (int i = 0; i < 16; i++) {
fontData[i] = fontData[i] ^ guid[mapping[i]];
fontData[i+16] = fontData[i+16] ^ guid[mapping[i]];
}
result = m_fontDatabase.addApplicationFontFromData( fontData );
}
}
}
// qCWarning(OkularXpsDebug) << "Loaded font: " << m_fontDatabase.applicationFontFamilies( result );
return result; // a font ID
}
KZip * XpsFile::xpsArchive() {
return m_xpsArchive;
}
QImage XpsPage::loadImageFromFile( const QString &fileName )
{
// qCWarning(OkularXpsDebug) << "image file name: " << fileName;
if ( fileName.at( 0 ) == QLatin1Char( '{' ) ) {
// for example: '{ColorConvertedBitmap /Resources/bla.wdp /Resources/foobar.icc}'
// TODO: properly read a ColorConvertedBitmap
return QImage();
}
QString absoluteFileName = absolutePath( entryPath( m_fileName ), fileName );
const KZipFileEntry* imageFile = loadFile( m_file->xpsArchive(), absoluteFileName, Qt::CaseInsensitive );
if ( !imageFile ) {
// image not found
return QImage();
}
/* WORKAROUND:
XPS standard requires to use 96dpi for images which doesn't have dpi specified (in file). When Qt loads such an image,
it sets its dpi to qt_defaultDpi and doesn't allow to find out that it happend.
To workaround this I used this procedure: load image, set its dpi to 96, load image again. When dpi isn't set in file,
dpi set by me stays unchanged.
Trolltech task ID: 159527.
*/
QImage image;
QByteArray data = imageFile->data();
QBuffer buffer(&data);
buffer.open(QBuffer::ReadOnly);
QImageReader reader(&buffer);
image = reader.read();
image.setDotsPerMeterX(qRound(96 / 0.0254));
image.setDotsPerMeterY(qRound(96 / 0.0254));
buffer.seek(0);
reader.setDevice(&buffer);
reader.read(&image);
return image;
}
Okular::TextPage* XpsPage::textPage()
{
// qCWarning(OkularXpsDebug) << "Parsing XpsPage, text extraction";
Okular::TextPage* textPage = new Okular::TextPage();
const KZipFileEntry* pageFile = static_cast<const KZipFileEntry *>(m_file->xpsArchive()->directory()->entry( m_fileName ));
QXmlStreamReader xml;
xml.addData( readFileOrDirectoryParts( pageFile ) );
QTransform matrix = QTransform();
QStack<QTransform> matrices;
matrices.push( QTransform() );
bool useMatrix = false;
QXmlStreamAttributes glyphsAtts;
while ( ! xml.atEnd() ) {
xml.readNext();
if ( xml.isStartElement() ) {
if ( xml.name() == QStringLiteral("Canvas")) {
matrices.push(matrix);
QString att = xml.attributes().value( QStringLiteral("RenderTransform") ).toString();
if (!att.isEmpty()) {
matrix = parseRscRefMatrix( att ) * matrix;
}
} else if ((xml.name() == QStringLiteral("Canvas.RenderTransform")) || (xml.name() == QStringLiteral("Glyphs.RenderTransform"))) {
useMatrix = true;
} else if (xml.name() == QStringLiteral("MatrixTransform")) {
if (useMatrix) {
matrix = attsToMatrix( xml.attributes().value(QStringLiteral("Matrix")).toString() ) * matrix;
}
} else if (xml.name() == QStringLiteral("Glyphs")) {
matrices.push( matrix );
glyphsAtts = xml.attributes();
} else if ( (xml.name() == QStringLiteral("Path")) || (xml.name() == QStringLiteral("Path.Fill")) || (xml.name() == QStringLiteral("SolidColorBrush"))
|| (xml.name() == QStringLiteral("ImageBrush")) || (xml.name() == QStringLiteral("ImageBrush.Transform"))
|| (xml.name() == QStringLiteral("Path.OpacityMask")) || (xml.name() == QStringLiteral("Path.Data"))
|| (xml.name() == QStringLiteral("PathGeometry")) || (xml.name() == QStringLiteral("PathFigure"))
|| (xml.name() == QStringLiteral("PolyLineSegment")) ) {
// those are only graphical - no use in text handling
} else if ( (xml.name() == QStringLiteral("FixedPage")) || (xml.name() == QStringLiteral("FixedPage.Resources")) ) {
// not useful for text extraction
} else {
qCWarning(OkularXpsDebug) << "Unhandled element in Text Extraction start: " << xml.name().toString();
}
} else if (xml.isEndElement() ) {
if (xml.name() == QStringLiteral("Canvas")) {
matrix = matrices.pop();
} else if ((xml.name() == QStringLiteral("Canvas.RenderTransform")) || (xml.name() == QStringLiteral("Glyphs.RenderTransform"))) {
useMatrix = false;
} else if (xml.name() == QStringLiteral("MatrixTransform")) {
// not clear if we need to do anything here yet.
} else if (xml.name() == QStringLiteral("Glyphs")) {
QString att = glyphsAtts.value( QStringLiteral("RenderTransform") ).toString();
if (!att.isEmpty()) {
matrix = parseRscRefMatrix( att ) * matrix;
}
QString text = unicodeString( glyphsAtts.value( QStringLiteral("UnicodeString") ).toString() );
// Get font (doesn't work well because qt doesn't allow to load font from file)
QFont font = m_file->getFontByName( glyphsAtts.value( QStringLiteral("FontUri") ).toString(),
glyphsAtts.value(QStringLiteral("FontRenderingEmSize")).toString().toFloat() * 72 / 96 );
QFontMetrics metrics = QFontMetrics( font );
// Origin
QPointF origin( glyphsAtts.value(QStringLiteral("OriginX")).toString().toDouble(),
glyphsAtts.value(QStringLiteral("OriginY")).toString().toDouble() );
int lastWidth = 0;
for (int i = 0; i < text.length(); i++) {
int width = metrics.width( text, i + 1 );
Okular::NormalizedRect * rect = new Okular::NormalizedRect( (origin.x() + lastWidth) / m_pageSize.width(),
(origin.y() - metrics.height()) / m_pageSize.height(),
(origin.x() + width) / m_pageSize.width(),
origin.y() / m_pageSize.height() );
rect->transform( matrix );
textPage->append( text.mid(i, 1), rect );
lastWidth = width;
}
matrix = matrices.pop();
} else if ( (xml.name() == QStringLiteral("Path")) || (xml.name() == QStringLiteral("Path.Fill")) || (xml.name() == QStringLiteral("SolidColorBrush"))
|| (xml.name() == QStringLiteral("ImageBrush")) || (xml.name() == QStringLiteral("ImageBrush.Transform"))
|| (xml.name() == QStringLiteral("Path.OpacityMask")) || (xml.name() == QStringLiteral("Path.Data"))
|| (xml.name() == QStringLiteral("PathGeometry")) || (xml.name() == QStringLiteral("PathFigure"))
|| (xml.name() == QStringLiteral("PolyLineSegment")) ) {
// those are only graphical - no use in text handling
} else if ( (xml.name() == QStringLiteral("FixedPage")) || (xml.name() == QStringLiteral("FixedPage.Resources")) ) {
// not useful for text extraction
} else {
qCWarning(OkularXpsDebug) << "Unhandled element in Text Extraction end: " << xml.name().toString();
}
}
}
if ( xml.error() ) {
qCWarning(OkularXpsDebug) << "Error parsing XpsPage text: " << xml.errorString();
}
return textPage;
}
void XpsDocument::parseDocumentStructure( const QString &documentStructureFileName )
{
qCWarning(OkularXpsDebug) << "document structure file name: " << documentStructureFileName;
m_haveDocumentStructure = false;
const KZipFileEntry* documentStructureFile = static_cast<const KZipFileEntry *>(m_file->xpsArchive()->directory()->entry( documentStructureFileName ));
QXmlStreamReader xml;
xml.addData( documentStructureFile->data() );
while ( !xml.atEnd() )
{
xml.readNext();
if ( xml.isStartElement() ) {
if ( xml.name() == QStringLiteral("DocumentStructure") ) {
// just a container for optional outline and story elements - nothing to do here
} else if ( xml.name() == QStringLiteral("DocumentStructure.Outline") ) {
qCWarning(OkularXpsDebug) << "found DocumentStructure.Outline";
} else if ( xml.name() == QStringLiteral("DocumentOutline") ) {
qCWarning(OkularXpsDebug) << "found DocumentOutline";
m_docStructure = new Okular::DocumentSynopsis;
} else if ( xml.name() == QStringLiteral("OutlineEntry") ) {
m_haveDocumentStructure = true;
QXmlStreamAttributes attributes = xml.attributes();
int outlineLevel = attributes.value( QStringLiteral("OutlineLevel")).toString().toInt();
QString description = attributes.value(QStringLiteral("Description")).toString();
QDomElement synopsisElement = m_docStructure->createElement( description );
synopsisElement.setAttribute( QStringLiteral("OutlineLevel"), outlineLevel );
QString target = attributes.value(QStringLiteral("OutlineTarget")).toString();
int hashPosition = target.lastIndexOf( QLatin1Char('#') );
target = target.mid( hashPosition + 1 );
// qCWarning(OkularXpsDebug) << "target: " << target;
Okular::DocumentViewport viewport;
viewport.pageNumber = m_docStructurePageMap.value( target );
synopsisElement.setAttribute( QStringLiteral("Viewport"), viewport.toString() );
if ( outlineLevel == 1 ) {
// qCWarning(OkularXpsDebug) << "Description: "
// << outlineEntryElement.attribute( "Description" ) << endl;
m_docStructure->appendChild( synopsisElement );
} else {
// find the last next highest element (so it this is level 3, we need
// to find the most recent level 2 node)
QDomNode maybeParentNode = m_docStructure->lastChild();
while ( !maybeParentNode.isNull() )
{
if ( maybeParentNode.toElement().attribute( QStringLiteral("OutlineLevel") ).toInt() == ( outlineLevel - 1 ) ) {
// we have the right parent
maybeParentNode.appendChild( synopsisElement );
break;
}
maybeParentNode = maybeParentNode.lastChild();
}
}
} else if ( xml.name() == QStringLiteral("Story") ) {
// we need to handle Story here, but I have no idea what to do with it.
} else if ( xml.name() == QStringLiteral("StoryFragment") ) {
// we need to handle StoryFragment here, but I have no idea what to do with it.
} else if ( xml.name() == QStringLiteral("StoryFragmentReference") ) {
// we need to handle StoryFragmentReference here, but I have no idea what to do with it.
} else {
qCWarning(OkularXpsDebug) << "Unhandled entry in DocumentStructure: " << xml.name().toString();
}
}
}
}
const Okular::DocumentSynopsis * XpsDocument::documentStructure()
{
return m_docStructure;
}
bool XpsDocument::hasDocumentStructure()
{
return m_haveDocumentStructure;
}
XpsDocument::XpsDocument(XpsFile *file, const QString &fileName): m_file(file), m_haveDocumentStructure( false ), m_docStructure( 0 )
{
qCWarning(OkularXpsDebug) << "document file name: " << fileName;
const KArchiveEntry* documentEntry = file->xpsArchive()->directory()->entry( fileName );
QString documentFilePath = fileName;
const QString documentEntryPath = entryPath( fileName );
QXmlStreamReader docXml;
docXml.addData( readFileOrDirectoryParts( documentEntry, &documentFilePath ) );
while( !docXml.atEnd() ) {
docXml.readNext();
if ( docXml.isStartElement() ) {
if ( docXml.name() == QStringLiteral("PageContent") ) {
QString pagePath = docXml.attributes().value(QStringLiteral("Source")).toString();
qCWarning(OkularXpsDebug) << "Page Path: " << pagePath;
XpsPage *page = new XpsPage( file, absolutePath( documentFilePath, pagePath ) );
m_pages.append(page);
} else if ( docXml.name() == QStringLiteral("PageContent.LinkTargets") ) {
// do nothing - wait for the real LinkTarget elements
} else if ( docXml.name() == QStringLiteral("LinkTarget") ) {
QString targetName = docXml.attributes().value( QStringLiteral("Name") ).toString();
if ( ! targetName.isEmpty() ) {
m_docStructurePageMap[ targetName ] = m_pages.count() - 1;
}
} else if ( docXml.name() == QStringLiteral("FixedDocument") ) {
// we just ignore this - it is just a container
} else {
qCWarning(OkularXpsDebug) << "Unhandled entry in FixedDocument: " << docXml.name().toString();
}
}
}
if ( docXml.error() ) {
qCWarning(OkularXpsDebug) << "Could not parse main XPS document file: " << docXml.errorString();
}
// There might be a relationships entry for this document - typically used to tell us where to find the
// content structure description
// We should be able to find this using a reference from some other part of the document, but I can't see it.
const int slashPosition = fileName.lastIndexOf( QLatin1Char('/') );
const QString documentRelationshipFile = absolutePath( documentEntryPath, QStringLiteral("_rels/") + fileName.mid( slashPosition + 1 ) + QStringLiteral(".rels") );
const KZipFileEntry* relFile = static_cast<const KZipFileEntry *>(file->xpsArchive()->directory()->entry(documentRelationshipFile));
QString documentStructureFile;
if ( relFile ) {
QXmlStreamReader xml;
xml.addData( readFileOrDirectoryParts( relFile ) );
while ( !xml.atEnd() )
{
xml.readNext();
if ( xml.isStartElement() && ( xml.name() == QStringLiteral("Relationship") ) ) {
QXmlStreamAttributes attributes = xml.attributes();
if ( attributes.value( QStringLiteral("Type") ).toString() == QLatin1String("http://schemas.microsoft.com/xps/2005/06/documentstructure") ) {
documentStructureFile = attributes.value( QStringLiteral("Target") ).toString();
} else {
qCWarning(OkularXpsDebug) << "Unknown document relationships element: "
<< attributes.value( QStringLiteral("Type") ).toString() << " : "
<< attributes.value( QStringLiteral("Target") ).toString() << endl;
}
}
}
if ( xml.error() ) {
qCWarning(OkularXpsDebug) << "Could not parse XPS page relationships file ( "
<< documentRelationshipFile
<< " ) - " << xml.errorString() << endl;
}
} else { // the page relationship file didn't exist in the zipfile
// this isn't fatal
qCWarning(OkularXpsDebug) << "Could not open Document relationship file from " << documentRelationshipFile;
}
if ( ! documentStructureFile.isEmpty() )
{
// qCWarning(OkularXpsDebug) << "Document structure filename: " << documentStructureFile;
// make the document path absolute
documentStructureFile = absolutePath( documentEntryPath, documentStructureFile );
// qCWarning(OkularXpsDebug) << "Document structure absolute path: " << documentStructureFile;
parseDocumentStructure( documentStructureFile );
}
}
XpsDocument::~XpsDocument()
{
for (int i = 0; i < m_pages.size(); i++) {
delete m_pages.at( i );
}
m_pages.clear();
if ( m_docStructure )
delete m_docStructure;
}
int XpsDocument::numPages() const
{
return m_pages.size();
}
XpsPage* XpsDocument::page(int pageNum) const
{
return m_pages.at(pageNum);
}
XpsFile::XpsFile()
{
}
XpsFile::~XpsFile()
{
m_fontCache.clear();
m_fontDatabase.removeAllApplicationFonts();
}
bool XpsFile::loadDocument(const QString &filename)
{
m_xpsArchive = new KZip( filename );
if ( m_xpsArchive->open( QIODevice::ReadOnly ) == true ) {
qCWarning(OkularXpsDebug) << "Successful open of " << m_xpsArchive->fileName();
} else {
qCWarning(OkularXpsDebug) << "Could not open XPS archive: " << m_xpsArchive->fileName();
delete m_xpsArchive;
return false;
}
// The only fixed entry in XPS is /_rels/.rels
const KArchiveEntry* relEntry = m_xpsArchive->directory()->entry(QStringLiteral("_rels/.rels"));
if ( !relEntry ) {
// this might occur if we can't read the zip directory, or it doesn't have the relationships entry
return false;
}
QXmlStreamReader relXml;
relXml.addData( readFileOrDirectoryParts( relEntry ) );
QString fixedRepresentationFileName;
// We work through the relationships document and pull out each element.
while ( !relXml.atEnd() )
{
relXml.readNext();
if ( relXml.isStartElement() ) {
if ( relXml.name() == QStringLiteral("Relationship") ) {
QXmlStreamAttributes attributes = relXml.attributes();
QString type = attributes.value( QStringLiteral("Type") ).toString();
QString target = attributes.value( QStringLiteral("Target") ).toString();
if ( QStringLiteral("http://schemas.openxmlformats.org/package/2006/relationships/metadata/thumbnail") == type ) {
m_thumbnailFileName = target;
} else if ( QStringLiteral("http://schemas.microsoft.com/xps/2005/06/fixedrepresentation") == type ) {
fixedRepresentationFileName = target;
} else if (QStringLiteral("http://schemas.openxmlformats.org/package/2006/relationships/metadata/core-properties") == type) {
m_corePropertiesFileName = target;
} else if (QStringLiteral("http://schemas.openxmlformats.org/package/2006/relationships/digital-signature/origin") == type) {
m_signatureOrigin = target;
} else {
qCWarning(OkularXpsDebug) << "Unknown relationships element: " << type << " : " << target;
}
} else if ( relXml.name() == QStringLiteral("Relationships") ) {
// nothing to do here - this is just the container level
} else {
qCWarning(OkularXpsDebug) << "unexpected element in _rels/.rels: " << relXml.name().toString();
}
}
}
if ( relXml.error() ) {
qCWarning(OkularXpsDebug) << "Could not parse _rels/.rels: " << relXml.errorString();
return false;
}
if ( fixedRepresentationFileName.isEmpty() ) {
// FixedRepresentation is a required part of the XPS document
return false;
}
const KArchiveEntry* fixedRepEntry = m_xpsArchive->directory()->entry( fixedRepresentationFileName );
QString fixedRepresentationFilePath = fixedRepresentationFileName;
QXmlStreamReader fixedRepXml;
fixedRepXml.addData( readFileOrDirectoryParts( fixedRepEntry, &fixedRepresentationFileName ) );
while ( !fixedRepXml.atEnd() )
{
fixedRepXml.readNext();
if ( fixedRepXml.isStartElement() ) {
if ( fixedRepXml.name() == QStringLiteral("DocumentReference") ) {
const QString source = fixedRepXml.attributes().value(QStringLiteral("Source")).toString();
XpsDocument *doc = new XpsDocument( this, absolutePath( fixedRepresentationFilePath, source ) );
for (int lv = 0; lv < doc->numPages(); ++lv) {
// our own copy of the pages list
m_pages.append( doc->page( lv ) );
}
m_documents.append(doc);
} else if ( fixedRepXml.name() == QStringLiteral("FixedDocumentSequence")) {
// we don't do anything here - this is just a container for one or more DocumentReference elements
} else {
qCWarning(OkularXpsDebug) << "Unhandled entry in FixedDocumentSequence: " << fixedRepXml.name().toString();
}
}
}
if ( fixedRepXml.error() ) {
qCWarning(OkularXpsDebug) << "Could not parse FixedRepresentation file:" << fixedRepXml.errorString();
return false;
}
return true;
}
Okular::DocumentInfo XpsFile::generateDocumentInfo() const
{
Okular::DocumentInfo docInfo;
docInfo.set( Okular::DocumentInfo::MimeType, QStringLiteral("application/oxps") );
if ( ! m_corePropertiesFileName.isEmpty() ) {
const KZipFileEntry* corepropsFile = static_cast<const KZipFileEntry *>(m_xpsArchive->directory()->entry(m_corePropertiesFileName));
QXmlStreamReader xml;
xml.addData( corepropsFile->data() );
while ( !xml.atEnd() )
{
xml.readNext();
if ( xml.isEndElement() )
break;
if ( xml.isStartElement() )
{
if (xml.name() == QStringLiteral("title")) {
docInfo.set( Okular::DocumentInfo::Title, xml.readElementText() );
} else if (xml.name() == QStringLiteral("subject")) {
docInfo.set( Okular::DocumentInfo::Subject, xml.readElementText() );
} else if (xml.name() == QStringLiteral("description")) {
docInfo.set( Okular::DocumentInfo::Description, xml.readElementText() );
} else if (xml.name() == QStringLiteral("creator")) {
docInfo.set( Okular::DocumentInfo::Creator, xml.readElementText() );
} else if (xml.name() == QStringLiteral("category")) {
docInfo.set( Okular::DocumentInfo::Category, xml.readElementText() );
} else if (xml.name() == QStringLiteral("created")) {
QDateTime createdDate = QDateTime::fromString( xml.readElementText(), QStringLiteral("yyyy-MM-ddThh:mm:ssZ") );
docInfo.set( Okular::DocumentInfo::CreationDate, QLocale().toString( createdDate, QLocale::LongFormat ) );
} else if (xml.name() == QStringLiteral("modified")) {
QDateTime modifiedDate = QDateTime::fromString( xml.readElementText(), QStringLiteral("yyyy-MM-ddThh:mm:ssZ") );
docInfo.set( Okular::DocumentInfo::ModificationDate, QLocale().toString( modifiedDate, QLocale::LongFormat ) );
} else if (xml.name() == QStringLiteral("keywords")) {
docInfo.set( Okular::DocumentInfo::Keywords, xml.readElementText() );
} else if (xml.name() == QStringLiteral("revision")) {
docInfo.set( QStringLiteral("revision"), xml.readElementText(), i18n( "Revision" ) );
}
}
}
if ( xml.error() )
{
qCWarning(OkularXpsDebug) << "Could not parse XPS core properties:" << xml.errorString();
}
} else {
qCWarning(OkularXpsDebug) << "No core properties filename";
}
docInfo.set( Okular::DocumentInfo::Pages, QString::number(numPages()) );
return docInfo;
}
bool XpsFile::closeDocument()
{
qDeleteAll( m_documents );
m_documents.clear();
delete m_xpsArchive;
return true;
}
int XpsFile::numPages() const
{
return m_pages.size();
}
int XpsFile::numDocuments() const
{
return m_documents.size();
}
XpsDocument* XpsFile::document(int documentNum) const
{
return m_documents.at( documentNum );
}
XpsPage* XpsFile::page(int pageNum) const
{
return m_pages.at( pageNum );
}
XpsGenerator::XpsGenerator( QObject *parent, const QVariantList &args )
: Okular::Generator( parent, args ), m_xpsFile( 0 )
{
setFeature( TextExtraction );
setFeature( PrintNative );
setFeature( PrintToFile );
// activate the threaded rendering iif:
// 1) QFontDatabase says so
// 2) Qt >= 4.4.0 (see Trolltech task ID: 169502)
// 3) Qt >= 4.4.2 (see Trolltech task ID: 215090)
if ( QFontDatabase::supportsThreadedFontRendering() )
setFeature( Threaded );
userMutex();
}
XpsGenerator::~XpsGenerator()
{
}
bool XpsGenerator::loadDocument( const QString & fileName, QVector<Okular::Page*> & pagesVector )
{
m_xpsFile = new XpsFile();
m_xpsFile->loadDocument( fileName );
pagesVector.resize( m_xpsFile->numPages() );
int pagesVectorOffset = 0;
for (int docNum = 0; docNum < m_xpsFile->numDocuments(); ++docNum )
{
XpsDocument *doc = m_xpsFile->document( docNum );
for (int pageNum = 0; pageNum < doc->numPages(); ++pageNum )
{
QSizeF pageSize = doc->page( pageNum )->size();
pagesVector[pagesVectorOffset] = new Okular::Page( pagesVectorOffset, pageSize.width(), pageSize.height(), Okular::Rotation0 );
++pagesVectorOffset;
}
}
return true;
}
bool XpsGenerator::doCloseDocument()
{
m_xpsFile->closeDocument();
delete m_xpsFile;
m_xpsFile = 0;
return true;
}
QImage XpsGenerator::image( Okular::PixmapRequest * request )
{
QMutexLocker lock( userMutex() );
QSize size( (int)request->width(), (int)request->height() );
QImage image( size, QImage::Format_RGB32 );
XpsPage *pageToRender = m_xpsFile->page( request->page()->number() );
pageToRender->renderToImage( &image );
return image;
}
Okular::TextPage* XpsGenerator::textPage( Okular::Page * page )
{
QMutexLocker lock( userMutex() );
XpsPage * xpsPage = m_xpsFile->page( page->number() );
return xpsPage->textPage();
}
Okular::DocumentInfo XpsGenerator::generateDocumentInfo( const QSet<Okular::DocumentInfo::Key> &keys ) const
{
Q_UNUSED(keys);
qCWarning(OkularXpsDebug) << "generating document metadata";
return m_xpsFile->generateDocumentInfo();
}
const Okular::DocumentSynopsis * XpsGenerator::generateDocumentSynopsis()
{
qCWarning(OkularXpsDebug) << "generating document synopsis";
// we only generate the synopsis for the first file.
if ( !m_xpsFile || !m_xpsFile->document( 0 ) )
return NULL;
if ( m_xpsFile->document( 0 )->hasDocumentStructure() )
return m_xpsFile->document( 0 )->documentStructure();
return NULL;
}
Okular::ExportFormat::List XpsGenerator::exportFormats() const
{
static Okular::ExportFormat::List formats;
if ( formats.isEmpty() ) {
formats.append( Okular::ExportFormat::standardFormat( Okular::ExportFormat::PlainText ) );
}
return formats;
}
bool XpsGenerator::exportTo( const QString &fileName, const Okular::ExportFormat &format )
{
if ( format.mimeType().inherits( QStringLiteral( "text/plain" ) ) ) {
QFile f( fileName );
if ( !f.open( QIODevice::WriteOnly ) )
return false;
QTextStream ts( &f );
for ( int i = 0; i < m_xpsFile->numPages(); ++i )
{
Okular::TextPage* textPage = m_xpsFile->page(i)->textPage();
QString text = textPage->text();
ts << text;
ts << QLatin1Char('\n');
delete textPage;
}
f.close();
return true;
}
return false;
}
bool XpsGenerator::print( QPrinter &printer )
{
QList<int> pageList = Okular::FilePrinter::pageList( printer, document()->pages(),
document()->currentPage() + 1,
document()->bookmarkedPageList() );
QPainter painter( &printer );
for ( int i = 0; i < pageList.count(); ++i )
{
if ( i != 0 )
printer.newPage();
const int page = pageList.at( i ) - 1;
XpsPage *pageToRender = m_xpsFile->page( page );
pageToRender->renderToPainter( &painter );
}
return true;
}
XpsRenderNode * XpsRenderNode::findChild( const QString &name )
{
for (int i = 0; i < children.size(); i++) {
if (children[i].name == name) {
return &children[i];
}
}
return NULL;
}
QVariant XpsRenderNode::getRequiredChildData( const QString &name )
{
XpsRenderNode * child = findChild( name );
if (child == NULL) {
qCWarning(OkularXpsDebug) << "Required element " << name << " is missing in " << this->name;
return QVariant();
}
return child->data;
}
QVariant XpsRenderNode::getChildData( const QString &name )
{
XpsRenderNode * child = findChild( name );
if (child == NULL) {
return QVariant();
} else {
return child->data;
}
}
Q_LOGGING_CATEGORY(OkularXpsDebug, "org.kde.okular.generators.xps", QtWarningMsg)
#include "generator_xps.moc"