1 files changed, 130 insertions, 0 deletions
diff --git a/kig/objects/object_type.h b/kig/objects/object_type.h
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+++ b/kig/objects/object_type.h
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+// 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.
+
+#ifndef KIG_OBJECTS_OBJECT_TYPE_H
+#define KIG_OBJECTS_OBJECT_TYPE_H
+
+#include "common.h"
+#include "../misc/argsparser.h"
+
+class ObjectTypeCalcer;
+
+/**
+ * The ObjectType class is a thing that represents the "behaviour" for
+ * a certain type..  This basically means that it decides what
+ * \ref ObjectImp the object gets in the calc() function, how the
+ * object move()'s etc.
+ */
+class ObjectType
+{
+  const char* mfulltypename;
+protected:
+  ObjectType( const char fulltypename[] );
+public:
+  virtual ~ObjectType();
+
+  enum {
+    ID_ConstrainedPointType,
+    ID_LocusType,
+    ID_FixedPointType
+  };
+
+  virtual bool inherits( int type ) const;
+
+  virtual ObjectImp* calc( const Args& parents, const KigDocument& d ) const = 0;
+
+  virtual bool canMove( const ObjectTypeCalcer& ourobj ) const;
+  virtual bool isFreelyTranslatable( const ObjectTypeCalcer& ourobj ) const;
+  virtual std::vector<ObjectCalcer*> movableParents( const ObjectTypeCalcer& ourobj ) const;
+  virtual const Coordinate moveReferencePoint( const ObjectTypeCalcer& ourobj ) const;
+  virtual void move( ObjectTypeCalcer& ourobj, const Coordinate& to,
+                     const KigDocument& d ) const;
+
+  const char* fullName() const;
+
+  /**
+   * Supposing that \p parents would be given as parents to
+   * this type's calc function, this function returns the ObjectImp id
+   * that \p o should at least have..  ( \p o should be part of \p parents )
+   */
+  virtual const ObjectImpType* impRequirement( const ObjectImp* o, const Args& parents ) const = 0;
+
+  /**
+   * Supposing that \p parents would be given as parents to this type's
+   * calc function, this function returns whether the returned
+   * ObjectImp will be, by construction, on \p o ( if \p o is a curve ), or
+   * through \p o ( if \p o is a point ).
+   */
+  virtual bool isDefinedOnOrThrough( const ObjectImp* o, const Args& parents ) const = 0;
+
+  /**
+   * returns the ObjectImp id of the ObjectImp's produced by this
+   * ObjectType..  if the ObjectType can return different sorts of
+   * ObjectImp's, it should return the biggest common id, or
+   * ID_AnyImp..
+   */
+  virtual const ObjectImpType* resultId() const = 0;
+
+  virtual std::vector<ObjectCalcer*> sortArgs( const std::vector<ObjectCalcer*>& args ) const = 0;
+
+  virtual Args sortArgs( const Args& args ) const = 0;
+
+  /**
+   * is this object type a transformation type.  We want to know this
+   * cause transform types are shown separately in an object's RMB
+   * menu..
+   */
+  virtual bool isTransform() const;
+
+  // ObjectType's can define some special actions, that are strictly
+  // specific to the type at hand.  E.g. a text label allows to toggle
+  // the display of a frame around the text.  Constrained and fixed
+  // points can be redefined etc.
+
+  /**
+   * return i18n'd names for the special actions..
+   */
+  virtual QStringList specialActions() const;
+  /**
+   * execute the \p i 'th action from the specialActions above..
+   */
+  virtual void executeAction( int i, ObjectHolder& o, ObjectTypeCalcer& t,
+                              KigPart& d, KigWidget& w, NormalMode& m ) const;
+};
+
+/**
+ * This is a convenience subclass of ObjectType that a type should
+ * inherit from if its parents can be specified in an ArgsParser..
+ */
+class ArgsParserObjectType
+  : public ObjectType
+{
+protected:
+  const ArgsParser margsparser;
+  ArgsParserObjectType( const char fulltypename[],
+                        const struct ArgsParser::spec argsspec[],
+                        int n );
+public:
+  const ObjectImpType* impRequirement( const ObjectImp* o, const Args& parents ) const;
+  bool isDefinedOnOrThrough( const ObjectImp* o, const Args& parents ) const;
+  const ArgsParser& argsParser() const;
+
+  std::vector<ObjectCalcer*> sortArgs( const std::vector<ObjectCalcer*>& args ) const;
+  Args sortArgs( const Args& args ) const;
+};
+
+#endif