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koffice/kchart/kdchart/KDXMLTools.cpp

810 lines
27 KiB

/* -*- 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;
}
}