kig/objects/base_type.cc

   1 // Copyright (C)  2003  Dominique Devriese <devriese@kde.org>
   2
   3 // This program is free software; you can redistribute it and/or
   4 // modify it under the terms of the GNU General Public License
   5 // as published by the Free Software Foundation; either version 2
   6 // of the License, or (at your option) any later version.
   7
   8 // This program is distributed in the hope that it will be useful,
   9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 // GNU General Public License for more details.
  12
  13 // You should have received a copy of the GNU General Public License
  14 // along with this program; if not, write to the Free Software
  15 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  16 // 02111-1307, USA.
  17
  18 #include "base_type.h"
  19
  20 #include "point_imp.h"
  21 #include "line_imp.h"
  22 #include "bogus_imp.h"
  23 #include "object_calcer.h"
  24
  25 #include "../misc/common.h"
  26
  27 ObjectABType::ObjectABType( const char* fulltypename, const ArgsParser::spec* spec, int n )
  28   : ArgsParserObjectType( fulltypename, spec, n )
  29 {
  30 }
  31
  32 ObjectABType::~ObjectABType()
  33 {
  34 }
  35
  36 ObjectImp* ObjectABType::calc( const Args& parents, const KigDocument& ) const
  37 {
  38   if ( ! margsparser.checkArgs( parents ) )
  39     return new InvalidImp;
  40
  41   Coordinate a = static_cast<const PointImp*>( parents[0] )->coordinate();
  42   Coordinate b = static_cast<const PointImp*>( parents[1] )->coordinate();
  43
  44   return calc( a, b );
  45 }
  46
  47 bool ObjectABType::canMove( const ObjectTypeCalcer& o ) const
  48 {
  49   return isFreelyTranslatable( o );
  50 /*
  51  * as observed by domi: this object is actually movable also
  52  * if one point is FreelyTranslatable and the other is
  53  * only movable, but then the "move" itself requires some
  54  * trickery.
  55  */
  56 }
  57
  58 bool ObjectABType::isFreelyTranslatable( const ObjectTypeCalcer& o ) const
  59 {
  60   std::vector<ObjectCalcer*> parents = o.parents();
  61   return parents[0]->isFreelyTranslatable() && parents[1]->isFreelyTranslatable();
  62 }
  63
  64 void ObjectABType::move( ObjectTypeCalcer& o, const Coordinate& to,
  65                          const KigDocument& d ) const
  66 {
  67   std::vector<ObjectCalcer*> parents = o.parents();
  68   assert( margsparser.checkArgs( parents ) );
  69   const Coordinate a = static_cast<const PointImp*>( parents[0]->imp() )->coordinate();
  70   const Coordinate b = static_cast<const PointImp*>( parents[1]->imp() )->coordinate();
  71   const Coordinate dist = b - a;
  72   if ( parents[0]->canMove() )
  73     parents[0]->move( to, d );
  74   if ( parents[1]->canMove() )
  75     parents[1]->move( to + dist, d );
  76 }
  77
  78 ObjectLPType::ObjectLPType( const char* fullname, const ArgsParser::spec* spec, int n )
  79   : ArgsParserObjectType( fullname, spec, n )
  80 {
  81 }
  82
  83 ObjectLPType::~ObjectLPType()
  84 {
  85 }
  86
  87 ObjectImp* ObjectLPType::calc( const Args& args, const KigDocument& ) const
  88 {
  89   if ( ! margsparser.checkArgs( args ) ) return new InvalidImp;
  90   LineData l = static_cast<const AbstractLineImp*>( args[0] )->data();
  91   Coordinate c = static_cast<const PointImp*>( args[1] )->coordinate();
  92   return calc( l, c );
  93 }
  94
  95 const Coordinate ObjectABType::moveReferencePoint( const ObjectTypeCalcer& o ) const
  96 {
  97   std::vector<ObjectCalcer*> parents = o.parents();
  98   assert( margsparser.checkArgs( parents ) );
  99   return static_cast<const PointImp*>( parents[0]->imp() )->coordinate();
 100 }
 101
 102 std::vector<ObjectCalcer*> ObjectABType::movableParents( const ObjectTypeCalcer& ourobj ) const
 103 {
 104   std::vector<ObjectCalcer*> parents = ourobj.parents();
 105   std::set<ObjectCalcer*> ret;
 106   std::vector<ObjectCalcer*> tmp = parents[0]->movableParents();
 107   ret.insert( tmp.begin(), tmp.end() );
 108   tmp = parents[1]->movableParents();
 109   ret.insert( tmp.begin(), tmp.end() );
 110   ret.insert( parents.begin(), parents.end() );
 111   return std::vector<ObjectCalcer*>( ret.begin(), ret.end() );
 112 }