Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdeedu@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 369 insertions, 0 deletions

diff --git a/kig/objects/object_factory.cc b/kig/objects/object_factory.cc
new file mode 100644
index 00000000..a54e01f0
--- /dev/null
+++ b/kig/objects/object_factory.cc
@@ -0,0 +1,369 @@
+// 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_factory.h"
+
+#include "bogus_imp.h"
+#include "curve_imp.h"
+#include "intersection_types.h"
+#include "line_imp.h"
+#include "object_drawer.h"
+#include "object_holder.h"
+#include "other_type.h"
+#include "point_imp.h"
+#include "point_type.h"
+#include "text_type.h"
+
+#include "../kig/kig_document.h"
+#include "../kig/kig_view.h"
+#include "../misc/calcpaths.h"
+#include "../misc/coordinate.h"
+#include "../misc/object_hierarchy.h"
+
+#include <algorithm>
+#include <functional>
+
+ObjectHolder* ObjectFactory::fixedPoint( const Coordinate& c ) const
+{
+  ObjectHolder* o = new ObjectHolder( fixedPointCalcer( c ) );
+  return o;
+}
+
+ObjectTypeCalcer* ObjectFactory::fixedPointCalcer( const Coordinate& c ) const
+{
+  std::vector<ObjectCalcer*> args;
+  args.push_back( new ObjectConstCalcer( new DoubleImp( c.x ) ) );
+  args.push_back( new ObjectConstCalcer( new DoubleImp( c.y ) ) );
+  ObjectTypeCalcer* oc = new ObjectTypeCalcer( FixedPointType::instance(), args );
+  return oc;
+}
+
+ObjectTypeCalcer* ObjectFactory::cursorPointCalcer( const Coordinate& c ) const
+{
+  std::vector<ObjectCalcer*> args;
+  args.push_back( new ObjectConstCalcer( new DoubleImp( c.x ) ) );
+  args.push_back( new ObjectConstCalcer( new DoubleImp( c.y ) ) );
+  ObjectTypeCalcer* oc = new ObjectTypeCalcer( CursorPointType::instance(), args );
+  return oc;
+}
+
+const ObjectFactory* ObjectFactory::instance()
+{
+  static ObjectFactory f;
+  return &f;
+}
+
+ObjectTypeCalcer* ObjectFactory::sensiblePointCalcer(
+  const Coordinate& c, const KigDocument& d, const KigWidget& w ) const
+{
+  std::vector<ObjectHolder*> os = d.whatAmIOn( c, w );
+  if ( os.size() == 2 )
+  {
+    // we can calc intersection point *olny* between two objects...
+    std::vector<ObjectCalcer*> args;
+    args.push_back( os[0]->calcer() );
+    args.push_back( os[1]->calcer() );
+    // the simpliest case: two lines...
+    if ( ( os[0]->imp()->inherits( AbstractLineImp::stype() ) ) &&
+         ( os[1]->imp()->inherits( AbstractLineImp::stype() ) ) )
+      return new ObjectTypeCalcer( LineLineIntersectionType::instance(), args );
+    // other cases will follow...
+  }
+  for ( std::vector<ObjectHolder*>::iterator i = os.begin(); i != os.end(); ++i )
+    if ( (*i)->imp()->inherits( CurveImp::stype() ) )
+      return constrainedPointCalcer( (*i)->calcer(), c, d );
+  return fixedPointCalcer( c );
+}
+
+ObjectHolder* ObjectFactory::sensiblePoint(
+  const Coordinate& c, const KigDocument& d, const KigWidget& w ) const
+{
+  return new ObjectHolder( sensiblePointCalcer( c, d, w ) );
+}
+
+ObjectTypeCalcer* ObjectFactory::relativePointCalcer(
+  ObjectCalcer* o, const Coordinate& loc ) const
+{
+  Coordinate reference = 
+      static_cast<const ObjectImp*>( o->imp() )->attachPoint();
+  assert( reference.valid() );
+
+  double x = 0.0;
+  double y = 0.0;
+  if ( loc.valid() )
+  {
+    x = loc.x - reference.x;
+    y = loc.y - reference.y;
+  }
+  std::vector<ObjectCalcer*> parents;
+  parents.push_back( new ObjectConstCalcer( new DoubleImp( x ) ) );
+  parents.push_back( new ObjectConstCalcer( new DoubleImp( y ) ) );
+  parents.push_back( o );
+  return new ObjectTypeCalcer( RelativePointType::instance(), parents );
+}
+
+ObjectTypeCalcer* ObjectFactory::constrainedPointCalcer(
+  ObjectCalcer* curve, double param ) const
+{
+  assert( curve->imp()->inherits( CurveImp::stype() ) );
+  std::vector<ObjectCalcer*> parents;
+  parents.push_back( new ObjectConstCalcer( new DoubleImp( param ) ) );
+  parents.push_back( curve );
+  return new ObjectTypeCalcer( ConstrainedPointType::instance(), parents );
+}
+
+ObjectHolder* ObjectFactory::constrainedPoint(
+  ObjectCalcer* curve, double param ) const
+{
+  return new ObjectHolder( constrainedPointCalcer( curve, param ) );
+}
+
+ObjectTypeCalcer* ObjectFactory::constrainedPointCalcer(
+  ObjectCalcer* curve, const Coordinate& c, const KigDocument& d ) const
+{
+  assert( curve->imp()->inherits( CurveImp::stype() ) );
+  double param = static_cast<const CurveImp*>( curve->imp() )->getParam( c, d );
+  return constrainedPointCalcer( curve, param );
+}
+
+ObjectHolder* ObjectFactory::constrainedPoint(
+  ObjectCalcer* curve, const Coordinate& c, const KigDocument& d ) const
+{
+  return new ObjectHolder( constrainedPointCalcer( curve, c, d ) );
+}
+
+ObjectTypeCalcer* ObjectFactory::locusCalcer(
+  ObjectCalcer* a, ObjectCalcer* b ) const
+{
+  assert( dynamic_cast<const ObjectTypeCalcer*>( a ) );
+  ObjectTypeCalcer* constrained = static_cast<ObjectTypeCalcer*>( a );
+  assert( constrained->type()->inherits( ObjectType::ID_ConstrainedPointType ) );
+  assert( constrained->parents().size() == 2 );
+  ObjectCalcer* curve = a->parents().back();
+
+  const ObjectCalcer* moving = b;
+
+  std::vector<ObjectCalcer*> hierparents;
+  hierparents.push_back( constrained );
+  std::vector<ObjectCalcer*> sideOfTree = sideOfTreePath( hierparents, moving );
+  std::copy( sideOfTree.begin(), sideOfTree.end(), std::back_inserter( hierparents ) );
+
+  ObjectHierarchy hier( hierparents, moving );
+
+  std::vector<ObjectCalcer*> realparents( 2 + sideOfTree.size(), 0 );
+  realparents[0] = new ObjectConstCalcer( new HierarchyImp( hier ) );
+  realparents[1] = curve;
+  copy( sideOfTree.begin(), sideOfTree.end(), realparents.begin() + 2 );
+
+  return new ObjectTypeCalcer( LocusType::instance(), realparents );
+}
+
+ObjectHolder* ObjectFactory::locus( ObjectCalcer* a, ObjectCalcer* b ) const
+{
+  return new ObjectHolder( locusCalcer( a, b ) );
+}
+
+ObjectHolder* ObjectFactory::label(
+  const QString& s, const Coordinate& loc,
+  bool needframe, const std::vector<ObjectCalcer*>& parents,
+  const KigDocument& doc ) const
+{
+  return new ObjectHolder( labelCalcer( s, loc, needframe, parents, doc ) );
+}
+
+ObjectTypeCalcer* ObjectFactory::labelCalcer(
+ const QString& s, const Coordinate& loc,
+ bool needframe, const std::vector<ObjectCalcer*>& parents,
+ const KigDocument& doc ) const
+{
+  return attachedLabelCalcer( s, 0, loc, needframe, parents, doc );
+}
+
+ObjectTypeCalcer* ObjectFactory::attachedLabelCalcer(
+  const QString& s, ObjectCalcer* p,
+  const Coordinate& loc, bool needframe,
+  const std::vector<ObjectCalcer*>& nparents,
+  const KigDocument& doc ) const
+{
+  std::vector<ObjectCalcer*> parents;
+  parents.reserve( nparents.size() + 3 );
+  parents.push_back( new ObjectConstCalcer( new IntImp( needframe ? 1 : 0 ) ) );
+
+  parents.push_back( getAttachPoint( p, loc, doc ) );
+
+  parents.push_back( new ObjectConstCalcer( new StringImp( s ) ) );
+  std::copy( nparents.begin(), nparents.end(), std::back_inserter( parents ) );
+  ObjectTypeCalcer* ret = new ObjectTypeCalcer( TextType::instance(), parents );
+  ret->calc( doc );
+  return ret;
+}
+
+ObjectCalcer* ObjectFactory::getAttachPoint(
+  ObjectCalcer* p,
+  const Coordinate& loc,
+  const KigDocument& doc ) const
+{
+/*
+ * mp: (changes to add relative-attachment).  Now an object is tested
+ * as follows:
+ * - if attachPoint() returns a valid coordinate, then we use the new method
+ * - if it is a point: 'old-style' treatment (we can change this shortly)
+ * - if it is a curve: 'old-style' treatment (we could use the new approach,
+ *   which can be better/worse depending on personal taste, I think)
+ *
+ * the first condition that matches determines the behaviour.
+ * the new method works similarly to the curve case, but we generate a new
+ * RelativePointType instead of a ConstrainedPointType; this will in turn make use
+ * of the new attachPoint() method for objects.
+ *
+ * changed the preference order 2005/01/21 (now attachPoint has preference over points)
+ *
+ * NOTE: changes in the tests performed should be matched also in
+ * modes/popup.cc (addNameLabel) and in label.cc (TextLabelModeBase::mouseMoved)
+ */
+
+  if ( p && p->imp()->attachPoint().valid() )
+  {
+    ObjectCalcer* o = relativePointCalcer( p, loc );
+    o->calc( doc );
+    return o;
+  }
+  else if ( p && p->imp()->inherits( PointImp::stype() ) )
+  {
+    return p;
+  }
+  else if ( p && p->imp()->inherits( CurveImp::stype() ) )
+  {
+    double param = 0.5;
+    if ( loc.valid() )
+      param = static_cast<const CurveImp*>( p->imp() )->getParam( loc, doc );
+
+    ObjectCalcer* o = constrainedPointCalcer( p, param );
+    o->calc( doc );
+    return o;
+  }
+  else
+  {
+    if ( loc.valid() )
+      return new ObjectConstCalcer( new PointImp( loc ) );
+    else
+      return new ObjectConstCalcer( new PointImp( Coordinate( 0, 0 ) ) );
+  }
+}
+
+ObjectHolder* ObjectFactory::attachedLabel(
+  const QString& s, ObjectCalcer* locationparent,
+  const Coordinate& loc, bool needframe,
+  const std::vector<ObjectCalcer*>& parents,
+  const KigDocument& doc ) const
+{
+  return new ObjectHolder( attachedLabelCalcer( s, locationparent, loc, needframe, parents, doc ) );
+}
+
+ObjectPropertyCalcer* ObjectFactory::propertyObjectCalcer(
+  ObjectCalcer* o, const char* p ) const
+{
+  int wp = o->imp()->propertiesInternalNames().findIndex( p );
+  if ( wp == -1 ) return 0;
+  return new ObjectPropertyCalcer( o, wp );
+}
+
+ObjectHolder* ObjectFactory::propertyObject(
+  ObjectCalcer* o, const char* p ) const
+{
+  return new ObjectHolder( propertyObjectCalcer( o, p ) );
+}
+
+void ObjectFactory::redefinePoint(
+  ObjectTypeCalcer* point, const Coordinate& c,
+  KigDocument& doc, const KigWidget& w ) const
+{
+  std::vector<ObjectHolder*> hos = doc.whatAmIOn( c, w );
+  std::vector<ObjectCalcer*> os;
+  ObjectCalcer* (ObjectHolder::*calcmeth)() = &ObjectHolder::calcer;
+  std::transform( hos.begin(), hos.end(), std::back_inserter( os ),
+                  std::mem_fun( calcmeth ) );
+  ObjectCalcer* v = 0;
+
+  // we don't want one of our children as a parent...
+  std::set<ObjectCalcer*> children = getAllChildren( point );
+  for ( std::vector<ObjectCalcer*>::iterator i = os.begin();
+        i != os.end(); ++i )
+    if ( (*i)->imp()->inherits( CurveImp::stype() ) &&
+         children.find( *i ) == children.end() )
+    {
+      v = *i;
+      break;
+    };
+
+  if ( v )
+  {
+    // we want a constrained point...
+    const CurveImp* curveimp = static_cast<const CurveImp*>( v->imp() );
+    double newparam = curveimp->getParam( c, doc );
+
+    if ( point->type()->inherits( ObjectType::ID_ConstrainedPointType ) )
+    {
+      // point already was constrained -> simply update the param
+      // DataObject and make sure point is on the right curve...
+      ObjectCalcer* dataobj = 0;
+      std::vector<ObjectCalcer*> parents = point->parents();
+      assert( parents.size() == 2 );
+      assert ( parents[0]->imp()->inherits( DoubleImp::stype() ) );
+      dataobj = parents[0];
+
+      parents.clear();
+      parents.push_back( dataobj );
+      parents.push_back( v );
+      point->setParents( parents );
+
+      assert( dynamic_cast<ObjectConstCalcer*>( dataobj ) );
+      static_cast<ObjectConstCalcer*>( dataobj )->setImp(
+        new DoubleImp( newparam ) );
+    }
+    else
+    {
+      // point used to be fixed -> add a new DataObject etc.
+      std::vector<ObjectCalcer*> args;
+      args.push_back( new ObjectConstCalcer( new DoubleImp( newparam ) ) );
+      args.push_back( v );
+      point->setType( ConstrainedPointType::instance() );
+      point->setParents( args );
+    }
+  }
+  else
+  {
+    // a fixed point...
+    if ( point->type()->inherits( ObjectType::ID_ConstrainedPointType ) )
+    {
+      // point used to be constrained..
+      std::vector<ObjectCalcer*> a;
+      a.push_back( new ObjectConstCalcer( new DoubleImp( c.x ) ) );
+      a.push_back( new ObjectConstCalcer( new DoubleImp( c.y ) ) );
+
+      point->setType( FixedPointType::instance() );
+      point->setParents( a );
+    }
+    else
+    {
+      // point used to be fixed -> simply update the DataObject's
+      // we can use the point's move function for that..
+      point->move( c, doc );
+    };
+  }
+}
+