diff options
Diffstat (limited to 'kig/objects/object_imp_factory.cc')
| -rw-r--r-- | kig/objects/object_imp_factory.cc | 510 |
1 files changed, 510 insertions, 0 deletions
diff --git a/kig/objects/object_imp_factory.cc b/kig/objects/object_imp_factory.cc new file mode 100644 index 00000000..bfeb1358 --- /dev/null +++ b/kig/objects/object_imp_factory.cc @@ -0,0 +1,510 @@ +// Copyright (C) 2002 Dominique Devriese <devriese@kde.org> + +// 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 "object_imp_factory.h" + +#include "object_imp.h" +#include "bogus_imp.h" +#include "circle_imp.h" +#include "conic_imp.h" +#include "cubic_imp.h" +#include "line_imp.h" +#include "locus_imp.h" +#include "other_imp.h" +#include "point_imp.h" +#include "text_imp.h" + +#include "../misc/coordinate.h" + +#include <qdom.h> + +#include <klocale.h> + +const ObjectImpFactory* ObjectImpFactory::instance() +{ + static const ObjectImpFactory t; + return &t; +} + +ObjectImpFactory::ObjectImpFactory() +{ +} + +ObjectImpFactory::~ObjectImpFactory() +{ +} + +static void addXYElements( const Coordinate& c, QDomElement& parent, QDomDocument& doc ) +{ + QDomElement xe = doc.createElement( "x" ); + xe.appendChild( + doc.createTextNode( + QString::number( c.x ) ) ); + parent.appendChild( xe ); + QDomElement ye = doc.createElement( "y" ); + ye.appendChild( + doc.createTextNode( + QString::number( c.y ) ) ); + parent.appendChild( ye ); +} + +static void addDoubleElement( const char* name, double d, QDomElement& parent, QDomDocument& doc ) +{ + QDomElement e = doc.createElement( name ); + e.appendChild( doc.createTextNode( QString::number( d ) ) ); + parent.appendChild( e ); +} + +static void addCoordinateElement( const char* name, const Coordinate& d, QDomElement& p, QDomDocument& doc ) +{ + QDomElement e = doc.createElement( name ); + addXYElements( d, e, doc ); + p.appendChild( e ); +} + +QString ObjectImpFactory::serialize( const ObjectImp& d, QDomElement& parent, + QDomDocument& doc ) const +{ + if( d.inherits( IntImp::stype() ) ) + { + parent.appendChild( + doc.createTextNode( + QString::number( static_cast<const IntImp&>( d ).data() ) ) ); + return QString::fromLatin1( "int" ); + } + else if ( d.inherits( DoubleImp::stype() ) ) + { + parent.appendChild( + doc.createTextNode( + QString::number( static_cast<const DoubleImp&>( d ).data() ) ) ); + return QString::fromLatin1( "double" ); + } + else if( d.inherits( StringImp::stype() ) ) + { + parent.appendChild( + doc.createTextNode( + static_cast<const StringImp&>( d ).data() ) ); + return QString::fromLatin1( "string" ); + } + else if ( d.inherits( TestResultImp::stype() ) ) + { + parent.appendChild( + doc.createTextNode( + static_cast<const TestResultImp&>( d ).data() ) ); + return QString::fromLatin1( "testresult" ); + } + else if( d.inherits( HierarchyImp::stype() ) ) + { + static_cast<const HierarchyImp&>( d ).data().serialize( parent, doc ); + return QString::fromLatin1( "hierarchy" ); + } + else if ( d.inherits( TransformationImp::stype() ) ) + { + const Transformation& trans = static_cast<const TransformationImp&>( d ).data(); + + QDomElement matrixe = doc.createElement( "matrix" ); + for ( int i = 0; i < 3; ++i ) + { + for ( int j = 0; j < 3; ++j ) + { + QDomElement elel = doc.createElement( "element" ); + elel.setAttribute( "row", QString::number( i ) ); + elel.setAttribute( "column", QString::number( j ) ); + elel.appendChild( doc.createTextNode( QString::number( trans.data( i, j ) ) ) ); + matrixe.appendChild( elel ); + }; + } + parent.appendChild( matrixe ); + + QDomElement homothetye = doc.createElement( "homothetic" ); + const char* ishomothety = trans.isHomothetic() ? "true" : "false"; + homothetye.appendChild( doc.createTextNode( ishomothety ) ); + parent.appendChild( homothetye ); + + return QString::fromLatin1( "transformation" ); + } + else if( d.inherits( AbstractLineImp::stype() ) ) + { + LineData l = static_cast<const AbstractLineImp&>( d ).data(); + addCoordinateElement( "a", l.a, parent, doc ); + addCoordinateElement( "b", l.b, parent, doc ); + if( d.inherits( SegmentImp::stype() ) ) + return QString::fromLatin1( "segment" ); + else if( d.inherits( RayImp::stype() ) ) + return QString::fromLatin1( "ray" ); + else return QString::fromLatin1( "line" ); + } + else if( d.inherits( PointImp::stype() ) ) + { + addXYElements( static_cast<const PointImp&>( d ).coordinate(), + parent, doc ); + return QString::fromLatin1( "point" ); + } + else if( d.inherits( TextImp::stype() ) ) + { + QString text = static_cast<const TextImp&>( d ).text(); + parent.appendChild( + doc.createTextNode( text ) ); + return QString::fromLatin1( "text" ); + } + else if( d.inherits( AngleImp::stype() ) ) + { + addDoubleElement( "size", static_cast<const AngleImp&>( d ).size(), parent, doc ); + return QString::fromLatin1( "angle" ); + } + else if ( d.inherits( ArcImp::stype() ) ) + { + const ArcImp& a = static_cast<const ArcImp&>( d ); + addCoordinateElement( "center", a.center(), parent, doc ); + addDoubleElement( "radius", a.radius(), parent, doc ); + addDoubleElement( "startangle", a.startAngle(), parent, doc ); + addDoubleElement( "angle", a.angle(), parent, doc ); + return QString::fromLatin1( "arc" ); + } + else if( d.inherits( VectorImp::stype() ) ) + { + Coordinate dir = static_cast<const VectorImp&>( d ).dir(); + addXYElements( dir, parent, doc ); + return QString::fromLatin1( "vector" ); + } + else if( d.inherits( LocusImp::stype() ) ) + { + const LocusImp& locus = static_cast<const LocusImp&>( d ); + + // serialize the curve.. + QDomElement curve = doc.createElement( "curve" ); + const CurveImp& curveimp = *locus.curve(); + QString type = serialize( curveimp, curve, doc ); + curve.setAttribute( "type", type ); + parent.appendChild( curve ); + + // serialize the hierarchy.. + QDomElement hier = doc.createElement( "calculation" ); + locus.hierarchy().serialize( hier, doc ); + parent.appendChild( hier ); + + return QString::fromLatin1( "locus" ); + } + else if( d.inherits( CircleImp::stype() ) ) + { + const CircleImp& c = static_cast<const CircleImp&>( d ); + addCoordinateElement( "center", c.center(), parent, doc ); + addDoubleElement( "radius", c.radius(), parent, doc ); + return QString::fromLatin1( "circle" ); + } + else if( d.inherits( ConicImp::stype() ) ) + { + const ConicPolarData data = static_cast<const ConicImp&>( d ).polarData(); + addCoordinateElement( "focus1", data.focus1, parent, doc ); + addDoubleElement( "pdimen", data.pdimen, parent, doc ); + addDoubleElement( "ecostheta0", data.ecostheta0, parent, doc ); + addDoubleElement( "esintheta0", data.esintheta0, parent, doc ); + return QString::fromLatin1( "conic" ); + } + else if( d.inherits( CubicImp::stype() ) ) + { + const CubicCartesianData data = static_cast<const CubicImp&>( d ).data(); + QDomElement coeffs = doc.createElement( "coefficients" ); + addDoubleElement( "a000", data.coeffs[0], coeffs, doc ); + addDoubleElement( "a001", data.coeffs[1], coeffs, doc ); + addDoubleElement( "a002", data.coeffs[2], coeffs, doc ); + addDoubleElement( "a011", data.coeffs[3], coeffs, doc ); + addDoubleElement( "a012", data.coeffs[4], coeffs, doc ); + addDoubleElement( "a022", data.coeffs[5], coeffs, doc ); + addDoubleElement( "a111", data.coeffs[6], coeffs, doc ); + addDoubleElement( "a112", data.coeffs[7], coeffs, doc ); + addDoubleElement( "a122", data.coeffs[8], coeffs, doc ); + addDoubleElement( "a222", data.coeffs[9], coeffs, doc ); + parent.appendChild( coeffs ); + return QString::fromLatin1( "cubic" ); + } + assert( false ); + return QString::null; +} + +static Coordinate readXYElements( const QDomElement& e, bool& ok ) +{ + double x, y; + ok = true; + QDomElement xe = e.firstChild().toElement(); + if ( xe.isNull() || xe.tagName() != "x" ) + { + ok = false; + return Coordinate(); + } + else x = xe.text().toDouble( &ok ); + + QDomElement ye = xe.nextSibling().toElement(); + if ( ye.isNull() || ye.tagName() != "y" ) + { + ok = false; + return Coordinate(); + } + else y = ye.text().toDouble( &ok ); + + return Coordinate( x, y ); +} + +static Coordinate readCoordinateElement( QDomNode n, bool& ok, + const char* tagname ) +{ + QDomElement e = n.toElement(); + if ( e.isNull() || e.tagName() != tagname ) + { + ok = false; + Coordinate ret; + return ret; + } + return readXYElements( e, ok ); +} + +static double readDoubleElement( QDomNode n, bool& ok, + const char* tagname ) +{ + QDomElement e = n.toElement(); + if ( e.isNull() || e.tagName() != tagname ) + { + ok = false; + return 0.; + }; + return e.text().toDouble( &ok ); +} + +ObjectImp* ObjectImpFactory::deserialize( const QString& type, + const QDomElement& parent, + QString& error ) const +{ +#define KIG_GENERIC_PARSE_ERROR \ + { \ + error = i18n( "An error was encountered at line %1 in file %2." ) \ + .arg( __LINE__ ).arg( __FILE__ ); \ + return 0; \ + } + + bool ok = true; + if ( type == "int" ) + { + int ret = parent.text().toInt( &ok ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + return new IntImp( ret ); + } + else if ( type == "double" ) + { + double ret = parent.text().toDouble( &ok ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + return new DoubleImp( ret ); + } + else if ( type == "string" ) + { + return new StringImp( parent.text() ); + } + else if ( type == "testresult" ) + { + return new TestResultImp( parent.text() ); + } + else if ( type == "hierarchy" ) + { + ObjectHierarchy* hier = ObjectHierarchy::buildSafeObjectHierarchy( parent, error ); + if ( ! hier ) return 0; + HierarchyImp* imp = new HierarchyImp( *hier ); + delete hier; + return imp; + } + else if ( type == "transformation" ) + { + double data[3][3]; + bool homothetic = false; + for ( QDomElement childe = parent.firstChild().toElement(); + ! childe.isNull(); childe = childe.nextSibling().toElement() ) + { + if ( childe.tagName() == "matrix" ) + { + for ( QDomElement elel = childe.firstChild().toElement(); + ! elel.isNull(); elel = elel.nextSibling().toElement() ) + { + if ( elel.tagName() != "element" ) KIG_GENERIC_PARSE_ERROR; + bool ok = true; + int row = elel.attribute( "row" ).toInt( &ok ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + int column = elel.attribute( "column" ).toInt( &ok ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + data[row][column] = elel.text().toDouble( &ok ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + }; + } + else if ( childe.tagName() == "homothetic" ) + { + homothetic = childe.text() == "true"; + } + else continue; + }; + Transformation trans( data, homothetic ); + return new TransformationImp( trans ); + } + else if ( type == "point" ) + { + Coordinate ret = readXYElements( parent, ok ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + return new PointImp( ret ); + } + else if ( type == "line" || type == "segment" || type == "ray" ) + { + QDomNode n = parent.firstChild(); + Coordinate a = readCoordinateElement( n, ok, "a" ); + if ( !ok ) KIG_GENERIC_PARSE_ERROR; + n = n.nextSibling(); + Coordinate b = readCoordinateElement( n, ok, "b" ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + if ( type == "line" ) return new LineImp( a, b ); + else if ( type == "segment" ) return new SegmentImp( a, b ); + else return new RayImp( a, b ); + } + else if( type == "angle" ) + { + double size = readDoubleElement( parent.firstChild(), ok, "size" ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + return new AngleImp( Coordinate(), 0, size ); + } + else if ( type == "arc" ) + { + QDomNode n = parent.firstChild(); + Coordinate center = readCoordinateElement( n, ok, "center" ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + n = n.nextSibling(); + double radius = readDoubleElement( n, ok, "radius" ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + n = n.nextSibling(); + double startangle = readDoubleElement( n, ok, "startangle" ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + n = n.nextSibling(); + double angle = readDoubleElement( n, ok, "angle" ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + return new ArcImp( center, radius, startangle, angle ); + } + else if( type == "vector" ) + { + Coordinate dir = readXYElements( parent, ok ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + return new VectorImp( Coordinate(), dir ); + } + else if( type == "locus" ) + { + QDomElement curvee = parent.firstChild().toElement(); + if ( curvee.isNull() || curvee.tagName() != "curve" ) KIG_GENERIC_PARSE_ERROR; + QString type = curvee.attribute( "type" ); + ObjectImp* oi = deserialize( type, curvee, error ); + if ( ! oi || ! oi->inherits( CurveImp::stype() ) ) KIG_GENERIC_PARSE_ERROR; + //CurveImp* curvei = static_cast<CurveImp*>( oi ); + + QDomElement hiere = curvee.nextSibling().toElement(); + if ( hiere.isNull() || hiere.tagName() != "calculation" ) KIG_GENERIC_PARSE_ERROR; + assert( false ); // TODO +// return new LocusImp( curvei, hier ); + } + else if( type == "circle" ) + { + QDomNode n = parent.firstChild(); + Coordinate center = readCoordinateElement( n, ok, "center" ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + + n = n.nextSibling(); + double radius = readDoubleElement( n, ok, "radius" ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + + return new CircleImp( center, radius ); + } + else if( type == "conic" ) + { + QDomNode n = parent.firstChild(); + Coordinate focus1 = readCoordinateElement( n, ok, "focus1" ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + + n = n.nextSibling(); + double pdimen = readDoubleElement( n, ok, "pdimen" ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + + n = n.nextSibling(); + double ecostheta0 = readDoubleElement( n, ok, "ecostheta0" ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + + n = n.nextSibling(); + double esintheta0 = readDoubleElement( n, ok, "esintheta0" ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + + return new ConicImpPolar( + ConicPolarData( focus1, pdimen, ecostheta0, esintheta0 ) ); + } + else if( type == "cubic" ) + { + QDomElement coeffse = parent.firstChild().toElement(); + if ( coeffse.isNull() || coeffse.tagName() != "coefficients" ) + KIG_GENERIC_PARSE_ERROR; + + QDomNode n = coeffse.firstChild(); + double a000 = readDoubleElement( n, ok, "a000" ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + + n = n.nextSibling(); + double a001 = readDoubleElement( n, ok, "a001" ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + + n = n.nextSibling(); + double a002 = readDoubleElement( n, ok, "a002" ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + + n = n.nextSibling(); + double a011 = readDoubleElement( n, ok, "a011" ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + + n = n.nextSibling(); + double a012 = readDoubleElement( n, ok, "a012" ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + + n = n.nextSibling(); + double a022 = readDoubleElement( n, ok, "a022" ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + + n = n.nextSibling(); + double a111 = readDoubleElement( n, ok, "a111" ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + + n = n.nextSibling(); + double a112 = readDoubleElement( n, ok, "a112" ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + + n = n.nextSibling(); + double a122 = readDoubleElement( n, ok, "a112" ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + + n = n.nextSibling(); + double a222 = readDoubleElement( n, ok, "a222" ); + if ( ! ok ) KIG_GENERIC_PARSE_ERROR; + + return new CubicImp( CubicCartesianData( a000, a001, a002, + a011, a012, a022, + a111, a112, a122, + a222 ) ); + } + + error = i18n( "This Kig file uses an object of type \"%1\", " + "which this Kig version does not support." + "Perhaps you have compiled Kig without support " + "for this object type," + "or perhaps you are using an older Kig version." ).arg( type ); + return 0; +} + |