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370 lines
12 KiB
370 lines
12 KiB
// Copyright (C) 2002 Dominique Devriese <devriese@kde.org>
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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// 02110-1301, USA.
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#include "object_factory.h"
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#include "bogus_imp.h"
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#include "curve_imp.h"
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#include "intersection_types.h"
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#include "line_imp.h"
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#include "object_drawer.h"
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#include "object_holder.h"
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#include "other_type.h"
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#include "point_imp.h"
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#include "point_type.h"
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#include "text_type.h"
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#include "../kig/kig_document.h"
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#include "../kig/kig_view.h"
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#include "../misc/calcpaths.h"
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#include "../misc/coordinate.h"
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#include "../misc/object_hierarchy.h"
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#include <algorithm>
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#include <functional>
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ObjectHolder* ObjectFactory::fixedPoint( const Coordinate& c ) const
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{
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ObjectHolder* o = new ObjectHolder( fixedPointCalcer( c ) );
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return o;
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}
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ObjectTypeCalcer* ObjectFactory::fixedPointCalcer( const Coordinate& c ) const
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{
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std::vector<ObjectCalcer*> args;
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args.push_back( new ObjectConstCalcer( new DoubleImp( c.x ) ) );
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args.push_back( new ObjectConstCalcer( new DoubleImp( c.y ) ) );
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ObjectTypeCalcer* oc = new ObjectTypeCalcer( FixedPointType::instance(), args );
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return oc;
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}
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ObjectTypeCalcer* ObjectFactory::cursorPointCalcer( const Coordinate& c ) const
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{
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std::vector<ObjectCalcer*> args;
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args.push_back( new ObjectConstCalcer( new DoubleImp( c.x ) ) );
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args.push_back( new ObjectConstCalcer( new DoubleImp( c.y ) ) );
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ObjectTypeCalcer* oc = new ObjectTypeCalcer( CursorPointType::instance(), args );
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return oc;
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}
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const ObjectFactory* ObjectFactory::instance()
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{
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static ObjectFactory f;
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return &f;
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}
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ObjectTypeCalcer* ObjectFactory::sensiblePointCalcer(
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const Coordinate& c, const KigDocument& d, const KigWidget& w ) const
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{
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std::vector<ObjectHolder*> os = d.whatAmIOn( c, w );
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if ( os.size() == 2 )
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{
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// we can calc intersection point *olny* between two objects...
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std::vector<ObjectCalcer*> args;
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args.push_back( os[0]->calcer() );
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args.push_back( os[1]->calcer() );
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// the simpliest case: two lines...
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if ( ( os[0]->imp()->inherits( AbstractLineImp::stype() ) ) &&
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( os[1]->imp()->inherits( AbstractLineImp::stype() ) ) )
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return new ObjectTypeCalcer( LineLineIntersectionType::instance(), args );
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// other cases will follow...
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}
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for ( std::vector<ObjectHolder*>::iterator i = os.begin(); i != os.end(); ++i )
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if ( (*i)->imp()->inherits( CurveImp::stype() ) )
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return constrainedPointCalcer( (*i)->calcer(), c, d );
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return fixedPointCalcer( c );
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}
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ObjectHolder* ObjectFactory::sensiblePoint(
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const Coordinate& c, const KigDocument& d, const KigWidget& w ) const
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{
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return new ObjectHolder( sensiblePointCalcer( c, d, w ) );
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}
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ObjectTypeCalcer* ObjectFactory::relativePointCalcer(
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ObjectCalcer* o, const Coordinate& loc ) const
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{
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Coordinate reference =
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static_cast<const ObjectImp*>( o->imp() )->attachPoint();
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assert( reference.valid() );
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double x = 0.0;
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double y = 0.0;
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if ( loc.valid() )
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{
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x = loc.x - reference.x;
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y = loc.y - reference.y;
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}
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std::vector<ObjectCalcer*> parents;
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parents.push_back( new ObjectConstCalcer( new DoubleImp( x ) ) );
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parents.push_back( new ObjectConstCalcer( new DoubleImp( y ) ) );
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parents.push_back( o );
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return new ObjectTypeCalcer( RelativePointType::instance(), parents );
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}
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ObjectTypeCalcer* ObjectFactory::constrainedPointCalcer(
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ObjectCalcer* curve, double param ) const
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{
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assert( curve->imp()->inherits( CurveImp::stype() ) );
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std::vector<ObjectCalcer*> parents;
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parents.push_back( new ObjectConstCalcer( new DoubleImp( param ) ) );
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parents.push_back( curve );
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return new ObjectTypeCalcer( ConstrainedPointType::instance(), parents );
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}
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ObjectHolder* ObjectFactory::constrainedPoint(
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ObjectCalcer* curve, double param ) const
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{
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return new ObjectHolder( constrainedPointCalcer( curve, param ) );
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}
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ObjectTypeCalcer* ObjectFactory::constrainedPointCalcer(
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ObjectCalcer* curve, const Coordinate& c, const KigDocument& d ) const
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{
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assert( curve->imp()->inherits( CurveImp::stype() ) );
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double param = static_cast<const CurveImp*>( curve->imp() )->getParam( c, d );
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return constrainedPointCalcer( curve, param );
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}
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ObjectHolder* ObjectFactory::constrainedPoint(
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ObjectCalcer* curve, const Coordinate& c, const KigDocument& d ) const
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{
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return new ObjectHolder( constrainedPointCalcer( curve, c, d ) );
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}
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ObjectTypeCalcer* ObjectFactory::locusCalcer(
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ObjectCalcer* a, ObjectCalcer* b ) const
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{
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assert( dynamic_cast<const ObjectTypeCalcer*>( a ) );
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ObjectTypeCalcer* constrained = static_cast<ObjectTypeCalcer*>( a );
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assert( constrained->type()->inherits( ObjectType::ID_ConstrainedPointType ) );
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assert( constrained->parents().size() == 2 );
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ObjectCalcer* curve = a->parents().back();
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const ObjectCalcer* moving = b;
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std::vector<ObjectCalcer*> hierparents;
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hierparents.push_back( constrained );
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std::vector<ObjectCalcer*> sideOfTree = sideOfTreePath( hierparents, moving );
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std::copy( sideOfTree.begin(), sideOfTree.end(), std::back_inserter( hierparents ) );
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ObjectHierarchy hier( hierparents, moving );
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std::vector<ObjectCalcer*> realparents( 2 + sideOfTree.size(), 0 );
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realparents[0] = new ObjectConstCalcer( new HierarchyImp( hier ) );
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realparents[1] = curve;
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copy( sideOfTree.begin(), sideOfTree.end(), realparents.begin() + 2 );
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return new ObjectTypeCalcer( LocusType::instance(), realparents );
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}
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ObjectHolder* ObjectFactory::locus( ObjectCalcer* a, ObjectCalcer* b ) const
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{
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return new ObjectHolder( locusCalcer( a, b ) );
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}
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ObjectHolder* ObjectFactory::label(
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const QString& s, const Coordinate& loc,
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bool needframe, const std::vector<ObjectCalcer*>& parents,
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const KigDocument& doc ) const
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{
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return new ObjectHolder( labelCalcer( s, loc, needframe, parents, doc ) );
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}
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ObjectTypeCalcer* ObjectFactory::labelCalcer(
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const QString& s, const Coordinate& loc,
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bool needframe, const std::vector<ObjectCalcer*>& parents,
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const KigDocument& doc ) const
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{
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return attachedLabelCalcer( s, 0, loc, needframe, parents, doc );
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}
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ObjectTypeCalcer* ObjectFactory::attachedLabelCalcer(
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const QString& s, ObjectCalcer* p,
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const Coordinate& loc, bool needframe,
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const std::vector<ObjectCalcer*>& nparents,
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const KigDocument& doc ) const
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{
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std::vector<ObjectCalcer*> parents;
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parents.reserve( nparents.size() + 3 );
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parents.push_back( new ObjectConstCalcer( new IntImp( needframe ? 1 : 0 ) ) );
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parents.push_back( getAttachPoint( p, loc, doc ) );
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parents.push_back( new ObjectConstCalcer( new StringImp( s ) ) );
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std::copy( nparents.begin(), nparents.end(), std::back_inserter( parents ) );
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ObjectTypeCalcer* ret = new ObjectTypeCalcer( TextType::instance(), parents );
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ret->calc( doc );
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return ret;
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}
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ObjectCalcer* ObjectFactory::getAttachPoint(
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ObjectCalcer* p,
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const Coordinate& loc,
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const KigDocument& doc ) const
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{
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/*
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* mp: (changes to add relative-attachment). Now an object is tested
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* as follows:
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* - if attachPoint() returns a valid coordinate, then we use the new method
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* - if it is a point: 'old-style' treatment (we can change this shortly)
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* - if it is a curve: 'old-style' treatment (we could use the new approach,
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* which can be better/worse depending on personal taste, I think)
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*
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* the first condition that matches determines the behaviour.
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* the new method works similarly to the curve case, but we generate a new
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* RelativePointType instead of a ConstrainedPointType; this will in turn make use
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* of the new attachPoint() method for objects.
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*
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* changed the preference order 2005/01/21 (now attachPoint has preference over points)
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*
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* NOTE: changes in the tests performed should be matched also in
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* modes/popup.cc (addNameLabel) and in label.cc (TextLabelModeBase::mouseMoved)
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*/
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if ( p && p->imp()->attachPoint().valid() )
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{
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ObjectCalcer* o = relativePointCalcer( p, loc );
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o->calc( doc );
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return o;
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}
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else if ( p && p->imp()->inherits( PointImp::stype() ) )
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{
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return p;
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}
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else if ( p && p->imp()->inherits( CurveImp::stype() ) )
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{
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double param = 0.5;
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if ( loc.valid() )
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param = static_cast<const CurveImp*>( p->imp() )->getParam( loc, doc );
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ObjectCalcer* o = constrainedPointCalcer( p, param );
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o->calc( doc );
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return o;
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}
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else
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{
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if ( loc.valid() )
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return new ObjectConstCalcer( new PointImp( loc ) );
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else
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return new ObjectConstCalcer( new PointImp( Coordinate( 0, 0 ) ) );
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}
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}
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ObjectHolder* ObjectFactory::attachedLabel(
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const QString& s, ObjectCalcer* locationparent,
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const Coordinate& loc, bool needframe,
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const std::vector<ObjectCalcer*>& parents,
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const KigDocument& doc ) const
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{
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return new ObjectHolder( attachedLabelCalcer( s, locationparent, loc, needframe, parents, doc ) );
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}
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ObjectPropertyCalcer* ObjectFactory::propertyObjectCalcer(
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ObjectCalcer* o, const char* p ) const
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{
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int wp = o->imp()->propertiesInternalNames().findIndex( p );
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if ( wp == -1 ) return 0;
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return new ObjectPropertyCalcer( o, wp );
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}
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ObjectHolder* ObjectFactory::propertyObject(
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ObjectCalcer* o, const char* p ) const
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{
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return new ObjectHolder( propertyObjectCalcer( o, p ) );
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}
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void ObjectFactory::redefinePoint(
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ObjectTypeCalcer* point, const Coordinate& c,
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KigDocument& doc, const KigWidget& w ) const
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{
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std::vector<ObjectHolder*> hos = doc.whatAmIOn( c, w );
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std::vector<ObjectCalcer*> os;
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ObjectCalcer* (ObjectHolder::*calcmeth)() = &ObjectHolder::calcer;
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std::transform( hos.begin(), hos.end(), std::back_inserter( os ),
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std::mem_fun( calcmeth ) );
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ObjectCalcer* v = 0;
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// we don't want one of our children as a parent...
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std::set<ObjectCalcer*> children = getAllChildren( point );
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for ( std::vector<ObjectCalcer*>::iterator i = os.begin();
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i != os.end(); ++i )
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if ( (*i)->imp()->inherits( CurveImp::stype() ) &&
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children.find( *i ) == children.end() )
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{
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v = *i;
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break;
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};
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if ( v )
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{
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// we want a constrained point...
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const CurveImp* curveimp = static_cast<const CurveImp*>( v->imp() );
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double newparam = curveimp->getParam( c, doc );
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if ( point->type()->inherits( ObjectType::ID_ConstrainedPointType ) )
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{
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// point already was constrained -> simply update the param
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// DataObject and make sure point is on the right curve...
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ObjectCalcer* dataobj = 0;
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std::vector<ObjectCalcer*> parents = point->parents();
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assert( parents.size() == 2 );
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assert ( parents[0]->imp()->inherits( DoubleImp::stype() ) );
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dataobj = parents[0];
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parents.clear();
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parents.push_back( dataobj );
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parents.push_back( v );
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point->setParents( parents );
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assert( dynamic_cast<ObjectConstCalcer*>( dataobj ) );
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static_cast<ObjectConstCalcer*>( dataobj )->setImp(
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new DoubleImp( newparam ) );
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}
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else
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{
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// point used to be fixed -> add a new DataObject etc.
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std::vector<ObjectCalcer*> args;
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args.push_back( new ObjectConstCalcer( new DoubleImp( newparam ) ) );
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args.push_back( v );
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point->setType( ConstrainedPointType::instance() );
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point->setParents( args );
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}
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}
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else
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{
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// a fixed point...
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if ( point->type()->inherits( ObjectType::ID_ConstrainedPointType ) )
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{
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// point used to be constrained..
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std::vector<ObjectCalcer*> a;
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a.push_back( new ObjectConstCalcer( new DoubleImp( c.x ) ) );
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a.push_back( new ObjectConstCalcer( new DoubleImp( c.y ) ) );
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point->setType( FixedPointType::instance() );
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point->setParents( a );
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}
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else
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{
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// point used to be fixed -> simply update the DataObject's
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// we can use the point's move function for that..
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point->move( c, doc );
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};
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}
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}
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