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Diffstat (limited to 'libkdchart/KDXMLTools.cpp')
| -rw-r--r-- | libkdchart/KDXMLTools.cpp | 809 |
1 files changed, 809 insertions, 0 deletions
diff --git a/libkdchart/KDXMLTools.cpp b/libkdchart/KDXMLTools.cpp new file mode 100644 index 0000000..a78c163 --- /dev/null +++ b/libkdchart/KDXMLTools.cpp @@ -0,0 +1,809 @@ +/* -*- Mode: C++ -*- + KDChart - a multi-platform charting engine + */ + +/**************************************************************************** + ** Copyright (C) 2001-2003 Klarälvdalens Datakonsult AB. All rights reserved. + ** + ** This file is part of the KDChart library. + ** + ** This file may be distributed and/or modified under the terms of the + ** GNU General Public License version 2 as published by the Free Software + ** Foundation and appearing in the file LICENSE.GPL included in the + ** packaging of this file. + ** + ** Licensees holding valid commercial KDChart licenses may use this file in + ** accordance with the KDChart Commercial License Agreement provided with + ** the Software. + ** + ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE + ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + ** + ** See http://www.klaralvdalens-datakonsult.se/?page=products for + ** information about KDChart Commercial License Agreements. + ** + ** Contact info@klaralvdalens-datakonsult.se if any conditions of this + ** licensing are not clear to you. + ** + **********************************************************************/ +#include "KDXMLTools.h" +#include <qbuffer.h> +#include <qimage.h> +#include <zlib.h> + +namespace KDXML { + + void createBoolNode( QDomDocument& doc, QDomNode& parent, + const QString& elementName, bool value ) + { + QDomElement newElement = + doc.createElement( elementName ); + parent.appendChild( newElement ); + QDomText elementContent = + doc.createTextNode( value ? "true" : "false" ); + newElement.appendChild( elementContent ); + } + + + void createOrientationNode( QDomDocument& doc, QDomNode& parent, + const QString& elementName, Qt::Orientation value ) + { + QDomElement newElement = + doc.createElement( elementName ); + parent.appendChild( newElement ); + QDomText elementContent = + doc.createTextNode( (Qt::Vertical == value) ? "vertical" : "horizontal" ); + newElement.appendChild( elementContent ); + } + + + + void createSizeNode( QDomDocument& doc, QDomNode& parent, + const QString& elementName, const QSize& value ) + { + QDomElement newElement = + doc.createElement( elementName ); + parent.appendChild( newElement ); + newElement.setAttribute( "Width", value.width() ); + newElement.setAttribute( "Height", value.height() ); + } + + + void createIntNode( QDomDocument& doc, QDomNode& parent, + const QString& elementName, int value ) + { + QDomElement newElement = + doc.createElement( elementName ); + parent.appendChild( newElement ); + QDomText elementContent = + doc.createTextNode( QString::number( value ) ); + newElement.appendChild( elementContent ); + } + + + void createDoubleNode( QDomDocument& doc, QDomNode& parent, + const QString& elementName, double value ) + { + QDomElement newElement = + doc.createElement( elementName ); + parent.appendChild( newElement ); + QDomText elementContent = + doc.createTextNode( QString::number( value ) ); + newElement.appendChild( elementContent ); + } + + + void createStringNode( QDomDocument& doc, QDomNode& parent, + const QString& elementName, + const QString& text ) + { + QDomElement newElement = + doc.createElement( elementName ); + parent.appendChild( newElement ); + QDomText elementContent = + doc.createTextNode( text ); + newElement.appendChild( elementContent ); + } + + + void createColorNode( QDomDocument& doc, QDomNode& parent, + const QString& elementName, const QColor& color ) + { + QDomElement colorElement = doc.createElement( elementName ); + parent.appendChild( colorElement ); + colorElement.setAttribute( "Red", + QString::number( color.red() ) ); + colorElement.setAttribute( "Green", + QString::number( color.green() ) ); + colorElement.setAttribute( "Blue", + QString::number( color.blue() ) ); + } + + + void createBrushNode( QDomDocument& doc, QDomNode& parent, + const QString& elementName, const QBrush& brush ) + + { + QDomElement brushElement = doc.createElement( elementName ); + parent.appendChild( brushElement ); + createColorNode( doc, brushElement, "Color", brush.color() ); + createStringNode( doc, brushElement, "Style", + KDXML::brushStyleToString( brush.style() ) ); + if( brush.style() == Qt::CustomPattern && brush.pixmap() ) + createPixmapNode( doc, brushElement, "Pixmap", *brush.pixmap() ); + } + + + void createPixmapNode( QDomDocument& doc, QDomNode& parent, + const QString& elementName, const QPixmap& pixmap ) + { + QDomElement pixmapElement = doc.createElement( elementName ); + parent.appendChild( pixmapElement ); + + createStringNode( doc, pixmapElement, "Format", "XPM.GZ" ); + if( pixmap.isNull() ){ + // we store an empty image without any data + createIntNode( doc, pixmapElement, "Length", 0 ); + }else{ + // Convert the pixmap to an image, save that image to an in-memory + // XPM representation and compress this representation. This + // conforms to the file format Qt Designer uses. + QByteArray ba; + QBuffer buffer( ba ); + buffer.open( IO_WriteOnly ); + QImageIO imgio( &buffer, "XPM" ); + QImage image = pixmap.convertToImage(); + imgio.setImage( image ); + imgio.write(); + buffer.close(); + ulong len = ba.size() * 2; + QByteArray bazip( len ); + ::compress( (uchar*) bazip.data(), &len, (uchar*) ba.data(), ba.size() ); + QString dataString; + static const char hexchars[] = "0123456789abcdef"; + for ( int i = 0; i < (int)len; ++i ) { + uchar c = (uchar) bazip[i]; + dataString += hexchars[c >> 4]; + dataString += hexchars[c & 0x0f]; + } + createIntNode( doc, pixmapElement, "Length", ba.size() ); + createStringNode( doc, pixmapElement, "Data", dataString ); + } + } + + + void createRectNode( QDomDocument& doc, QDomNode& parent, + const QString& elementName, const QRect& rect ) + { + QDomElement rectElement = doc.createElement( elementName ); + parent.appendChild( rectElement ); + QDomElement xElement = doc.createElement( "X" ); + rectElement.appendChild( xElement ); + QDomText xContent = doc.createTextNode( QString::number( rect.x() ) ); + xElement.appendChild( xContent ); + QDomElement yElement = doc.createElement( "Y" ); + rectElement.appendChild( yElement ); + QDomText yContent = doc.createTextNode( QString::number( rect.y() ) ); + yElement.appendChild( yContent ); + QDomElement widthElement = doc.createElement( "Width" ); + rectElement.appendChild( widthElement ); + QDomText widthContent = doc.createTextNode( QString::number( rect.width() ) ); + widthElement.appendChild( widthContent ); + QDomElement heightElement = doc.createElement( "Height" ); + rectElement.appendChild( heightElement ); + QDomText heightContent = doc.createTextNode( QString::number( rect.height() ) ); + heightElement.appendChild( heightContent ); + } + + + void createStringListNodes( QDomDocument& doc, QDomNode& parent, + const QString& elementName, + const QStringList* list ) + { + if( !list ) + return; + + for( QStringList::ConstIterator it = list->begin(); + it != list->end(); ++it ) { + QDomElement element = doc.createElement( elementName ); + parent.appendChild( element ); + QDomText elementContent = doc.createTextNode( *it ); + element.appendChild( elementContent ); + } + } + + + void createFontNode( QDomDocument& doc, QDomNode& parent, + const QString& elementName, const QFont& font ) + { + QDomElement fontElement = doc.createElement( elementName ); + parent.appendChild( fontElement ); + createStringNode( doc, fontElement, "Family", font.family() ); + createIntNode( doc, fontElement, "PointSize", font.pointSize() ); + createIntNode( doc, fontElement, "Weight", font.weight() ); + createBoolNode( doc, fontElement, "Italic", font.italic() ); +#if COMPAT_QT_VERSION < 0x030000 + // Qt 3 handles the charset internally. + createIntNode( doc, fontElement, "CharSet", font.charSet() ); +#endif + } + + + void createPenNode( QDomDocument& doc, QDomNode& parent, + const QString& elementName, const QPen& pen ) + { + QDomElement penElement = doc.createElement( elementName ); + parent.appendChild( penElement ); + createIntNode( doc, penElement, "Width", pen.width() ); + createColorNode( doc, penElement, "Color", pen.color() ); + createStringNode( doc, penElement, "Style", penStyleToString( pen.style() ) ); + } + + + void createDateTimeNode( QDomDocument& doc, QDomNode& parent, + const QString& elementName, + const QDateTime& datetime ) + { + QDomElement dateTimeElement = doc.createElement( elementName ); + parent.appendChild( dateTimeElement ); + createDateNode( doc, dateTimeElement, "Date", datetime.date() ); + createTimeNode( doc, dateTimeElement, "Time", datetime.time() ); + } + + + void createDateNode( QDomDocument& doc, QDomNode& parent, + const QString& elementName, const QDate& date ) + { + QDomElement dateElement = doc.createElement( elementName ); + parent.appendChild( dateElement ); + dateElement.setAttribute( "Year", QString::number( date.year() ) ); + dateElement.setAttribute( "Month", QString::number( date.month() ) ); + dateElement.setAttribute( "Day", QString::number( date.day() ) ); + } + + + void createTimeNode( QDomDocument& doc, QDomNode& parent, + const QString& elementName, const QTime& time ) + { + QDomElement timeElement = doc.createElement( elementName ); + parent.appendChild( timeElement ); + timeElement.setAttribute( "Hour", + QString::number( time.hour() ) ); + timeElement.setAttribute( "Minute", + QString::number( time.minute() ) ); + timeElement.setAttribute( "Second", + QString::number( time.second() ) ); + timeElement.setAttribute( "Millisecond", + QString::number( time.msec() ) ); + } + + + QString penStyleToString( Qt::PenStyle style ) + { + switch( style ) { + case Qt::NoPen: + return "NoPen"; + case Qt::SolidLine: + return "SolidLine"; + case Qt::DashLine: + return "DashLine"; + case Qt::DotLine: + return "DotLine"; + case Qt::DashDotLine: + return "DashDotLine"; + case Qt::DashDotDotLine: + return "DashDotDotLine"; + default: // should not happen + return "SolidLine"; + } + } + + + + QString brushStyleToString( Qt::BrushStyle style ) + { + // PENDING(kalle) Support custom patterns + switch( style ) { + case Qt::NoBrush: + return "NoBrush"; + case Qt::SolidPattern: + return "SolidPattern"; + case Qt::Dense1Pattern: + return "Dense1Pattern"; + case Qt::Dense2Pattern: + return "Dense2Pattern"; + case Qt::Dense3Pattern: + return "Dense3Pattern"; + case Qt::Dense4Pattern: + return "Dense4Pattern"; + case Qt::Dense5Pattern: + return "Dense5Pattern"; + case Qt::Dense6Pattern: + return "Dense6Pattern"; + case Qt::Dense7Pattern: + return "Dense7Pattern"; + case Qt::HorPattern: + return "HorPattern"; + case Qt::VerPattern: + return "VerPattern"; + case Qt::CrossPattern: + return "CrossPattern"; + case Qt::BDiagPattern: + return "BDiagPattern"; + case Qt::FDiagPattern: + return "FDiagPattern"; + case Qt::DiagCrossPattern: + return "DiagCrossPattern"; + default: // should not happen (but can for a custom pattern) + return "SolidPattern"; + } + } + + + bool readStringNode( const QDomElement& element, QString& value ) + { + value = element.text(); + return true; + } + + + bool readIntNode( const QDomElement& element, int& value ) + { + bool ok = false; + int temp = element.text().toInt( &ok ); + if( ok ) + value = temp; + return ok; + } + + + bool readDoubleNode( const QDomElement& element, double& value ) + { + bool ok = false; + double temp = element.text().toDouble( &ok ); + if( ok ) + value = temp; + return ok; + } + + + bool readBoolNode( const QDomElement& element, bool& value ) + { + if( element.text() == "true" ) { + value = true; + return true; + } else if( element.text() == "false" ) { + value = false; + return true; + } else + return false; + } + + + bool readOrientationNode( const QDomElement& element, Qt::Orientation& value ) + { + if( element.text() == "vertical" ) { + value = Qt::Vertical; + return true; + } else if( element.text() == "horizontal" ) { + value = Qt::Horizontal; + return true; + } else + return false; + } + + + bool readSizeNode( const QDomElement& element, QSize& value ) + { + bool ok = false; + int width, height; + if( element.hasAttribute( "Width" ) ) { + width = element.attribute( "Width" ).toInt( &ok ); + if( ok && element.hasAttribute( "Height" ) ) { + height = element.attribute( "Height" ).toInt( &ok ); + if( ok ){ + value.setWidth( width ); + value.setHeight( height ); + } + } + } + return ok; + } + + + bool readColorNode( const QDomElement& element, QColor& value ) + { + bool ok = true; + int red=0, green=0, blue=0; + if( element.hasAttribute( "Red" ) ) { + bool redOk = false; + red = element.attribute( "Red" ).toInt( &redOk ); + ok = ok & redOk; + } + if( element.hasAttribute( "Green" ) ) { + bool greenOk = false; + green = element.attribute( "Green" ).toInt( &greenOk ); + ok = ok & greenOk; + } + if( element.hasAttribute( "Blue" ) ) { + bool blueOk = false; + blue = element.attribute( "Blue" ).toInt( &blueOk ); + ok = ok & blueOk; + } + + if( ok ) + value.setRgb( red, green, blue ); + + return ok; + } + + + bool readBrushNode( const QDomElement& element, QBrush& brush ) + { + bool ok = true; + QColor tempColor; + Qt::BrushStyle tempStyle=Qt::SolidPattern; + QPixmap tempPixmap; + QDomNode node = element.firstChild(); + while( !node.isNull() ) { + QDomElement element = node.toElement(); + if( !element.isNull() ) { // was really an element + QString tagName = element.tagName(); + if( tagName == "Color" ) { + ok = ok & readColorNode( element, tempColor ); + } else if( tagName == "Style" ) { + QString value; + ok = ok & readStringNode( element, value ); + tempStyle = stringToBrushStyle( value ); + } else if( tagName == "Pixmap" ) { + ok = ok & readPixmapNode( element, tempPixmap ); + } else { + qDebug( "Unknown tag in brush" ); + } + } + node = node.nextSibling(); + } + + if( ok ) { + brush.setColor( tempColor ); + brush.setStyle( tempStyle ); + if( !tempPixmap.isNull() ) + brush.setPixmap( tempPixmap ); + } + + return ok; + } + + + bool readPixmapNode( const QDomElement& element, QPixmap& pixmap ) + { + bool ok = true; + unsigned long tempLength; + QString tempData; + QDomNode node = element.firstChild(); + while( !node.isNull() ) { + QDomElement element = node.toElement(); + if( !element.isNull() ) { // was really an element + QString tagName = element.tagName(); + if( tagName == "Format" ) { + QString formatName; + ok = ok & readStringNode( element, formatName ); +#ifndef NDEBUG + if( formatName != "XPM.GZ" ) + qDebug( "Unsupported pixmap format in XML file" ); +#endif + } else if( tagName == "Length" ) { + int itempLength; + ok = ok & readIntNode( element, itempLength ); + tempLength = itempLength; + } else if( tagName == "Data" ) { + ok = ok & readStringNode( element, tempData ); + } else { + qDebug( "Unknown tag in Pixmap" ); + } + } + node = node.nextSibling(); + } + + if( ok ) { + if( 0 < tempLength ) { + // Decode the image file format in the same way Qt Designer does. + char *ba = new char[ tempData.length() / 2 ]; + for ( int i = 0; i < (int)tempData.length() / 2; ++i ) { + char h = tempData[ 2 * i ].latin1(); + char l = tempData[ 2 * i + 1 ].latin1(); + uchar r = 0; + if ( h <= '9' ) + r += h - '0'; + else + r += h - 'a' + 10; + r = r << 4; + if ( l <= '9' ) + r += l - '0'; + else + r += l - 'a' + 10; + ba[ i ] = r; + } + + if( tempLength < tempData.length() * 5 ) + tempLength = tempData.length() * 5; + QByteArray baunzip( tempLength ); + ::uncompress( (uchar*) baunzip.data(), &tempLength, + (uchar*) ba, tempData.length()/2 ); + QImage image; + image.loadFromData( (const uchar*)baunzip.data(), tempLength, "XPM" ); + + if( image.isNull() ) + pixmap.resize( 0, 0 ); // This is _not_ an error, we just read a NULL pixmap! + else + ok = ok & pixmap.convertFromImage( image, 0 ); + } else + pixmap.resize( 0, 0 ); // This is _not_ an error, we just read a empty pixmap! + } + + return ok; + } + + + bool readPenNode( const QDomElement& element, QPen& pen ) + { + bool ok = true; + int tempWidth; + QColor tempColor; + Qt::PenStyle tempStyle=Qt::SolidLine; + QDomNode node = element.firstChild(); + while( !node.isNull() ) { + QDomElement element = node.toElement(); + if( !element.isNull() ) { // was really an element + QString tagName = element.tagName(); + if( tagName == "Width" ) { + ok = ok & readIntNode( element, tempWidth ); + } else if( tagName == "Color" ) { + ok = ok & readColorNode( element, tempColor ); + } else if( tagName == "Style" ) { + QString value; + ok = ok & readStringNode( element, value ); + tempStyle = stringToPenStyle( value ); + } else { + qDebug( "Unknown tag in brush" ); + } + } + node = node.nextSibling(); + } + + if( ok ) { + pen.setWidth( tempWidth ); + pen.setColor( tempColor ); + pen.setStyle( tempStyle ); + } + + return ok; + } + + bool readFontNode( const QDomElement& element, QFont& font ) + { + bool ok = true; + QString family; + int pointSize, weight; + bool italic; + int charSet; + QDomNode node = element.firstChild(); + while( !node.isNull() ) { + QDomElement element = node.toElement(); + if( !element.isNull() ) { // was really an element + QString tagName = element.tagName(); + if( tagName == "Family" ) { + ok = ok & readStringNode( element, family ); + } else if( tagName == "PointSize" ) { + ok = ok & readIntNode( element, pointSize ); + } else if( tagName == "Weight" ) { + ok = ok & readIntNode( element, weight ); + } else if( tagName == "Italic" ) { + ok = ok & readBoolNode( element, italic ); + } else if( tagName == "CharSet" ) { + ok = ok & readIntNode( element, charSet ); + } else { + qDebug( "Unknown tag in color map" ); + } + } + node = node.nextSibling(); + } + + if( ok ) { + font.setFamily( family ); + font.setPointSize( pointSize ); + font.setWeight( weight ); + font.setItalic( italic ); +#if COMPAT_QT_VERSION < 0x030000 + // Qt 3 handles charsets internally. + font.setCharSet( (QFont::CharSet)charSet ); +#endif + } + + return ok; + } + + bool readRectNode( const QDomElement& element, QRect& value ) + { + bool ok = true; + int width, height, x, y; + QDomNode node = element.firstChild(); + while( !node.isNull() ) { + QDomElement element = node.toElement(); + if( !element.isNull() ) { // was really an element + QString tagName = element.tagName(); + if( tagName == "Width" ) { + ok = ok & readIntNode( element, width ); + } else if( tagName == "Height" ) { + ok = ok & readIntNode( element, height ); + } else if( tagName == "X" ) { + ok = ok & readIntNode( element, x ); + } else if( tagName == "Y" ) { + ok = ok & readIntNode( element, y ); + } else { + qDebug( "Unknown tag in rect" ); + } + } + node = node.nextSibling(); + } + + if( ok ) { + value.setX( x ); + value.setY( y ); + value.setWidth( width ); + value.setHeight( height ); + } + + return ok; + } + + + + bool readDateTimeNode( const QDomElement& element, QDateTime& datetime ) + { + bool ok = true; + QDate tempDate; + QTime tempTime; + QDomNode node = element.firstChild(); + while( !node.isNull() ) { + QDomElement element = node.toElement(); + if( !element.isNull() ) { // was really an element + QString tagName = element.tagName(); + if( tagName == "Date" ) { + ok = ok & readDateNode( element, tempDate ); + } else if( tagName == "Time" ) { + ok = ok & readTimeNode( element, tempTime ); + } else { + qDebug( "Unknown tag in datetime" ); + } + } + node = node.nextSibling(); + } + + if( ok ) { + datetime.setDate( tempDate ); + datetime.setTime( tempTime ); + } + + return ok; + } + + + bool readDateNode( const QDomElement& element, QDate& value ) + { + bool ok = true; + int year=0, month=0, day=0; + if( element.hasAttribute( "Year" ) ) { + bool yearOk = false; + year = element.attribute( "Year" ).toInt( &yearOk ); + ok = ok & yearOk; + } + if( element.hasAttribute( "Month" ) ) { + bool monthOk = false; + month = element.attribute( "Month" ).toInt( &monthOk ); + ok = ok & monthOk; + } + if( element.hasAttribute( "Day" ) ) { + bool dayOk = false; + day = element.attribute( "Day" ).toInt( &dayOk ); + ok = ok & dayOk; + } + + if( ok ) + value.setYMD( year, month, day ); + + return ok; + } + + + + bool readTimeNode( const QDomElement& element, QTime& value ) + { + bool ok = true; + int hour=0, minute=0, second=0, msec=0; + if( element.hasAttribute( "Hour" ) ) { + bool hourOk = false; + hour = element.attribute( "Hour" ).toInt( &hourOk ); + ok = ok & hourOk; + } + if( element.hasAttribute( "Minute" ) ) { + bool minuteOk = false; + minute = element.attribute( "Minute" ).toInt( &minuteOk ); + ok = ok & minuteOk; + } + if( element.hasAttribute( "Second" ) ) { + bool secondOk = false; + second = element.attribute( "Second" ).toInt( &secondOk ); + ok = ok & secondOk; + } + if( element.hasAttribute( "Millisecond" ) ) { + bool msecOk = false; + msec = element.attribute( "Millisecond" ).toInt( &msecOk ); + ok = ok & msecOk; + } + + if( ok ) + value.setHMS( hour, minute, second, msec ); + + return ok; + } + + + + Qt::PenStyle stringToPenStyle( const QString& style ) + { + if( style == "NoPen" ) + return Qt::NoPen; + else if( style == "SolidLine" ) + return Qt::SolidLine; + else if( style == "DashLine" ) + return Qt::DashLine; + else if( style == "DotLine" ) + return Qt::DotLine; + else if( style == "DashDotLine" ) + return Qt::DashDotLine; + else if( style == "DashDotDotLine" ) + return Qt::DashDotDotLine; + else // should not happen + return Qt::SolidLine; + } + + + Qt::BrushStyle stringToBrushStyle( const QString& style ) + { + // PENDING(kalle) Support custom patterns + if( style == "NoBrush" ) + return Qt::NoBrush; + else if( style == "SolidPattern" ) + return Qt::SolidPattern; + else if( style == "Dense1Pattern" ) + return Qt::Dense1Pattern; + else if( style == "Dense2Pattern" ) + return Qt::Dense2Pattern; + else if( style == "Dense3Pattern" ) + return Qt::Dense3Pattern; + else if( style == "Dense4Pattern" ) + return Qt::Dense4Pattern; + else if( style == "Dense5Pattern" ) + return Qt::Dense5Pattern; + else if( style == "Dense6Pattern" ) + return Qt::Dense6Pattern; + else if( style == "Dense7Pattern" ) + return Qt::Dense7Pattern; + else if( style == "HorPattern" ) + return Qt::HorPattern; + else if( style == "VerPattern" ) + return Qt::VerPattern; + else if( style == "CrossPattern" ) + return Qt::CrossPattern; + else if( style == "BDiagPattern" ) + return Qt::BDiagPattern; + else if( style == "FDiagPattern" ) + return Qt::FDiagPattern; + else if( style == "DiagCrossPattern" ) + return Qt::DiagCrossPattern; + else // should not happen (but can with custom patterns) + return Qt::SolidPattern; + } + +} |