Path::PropertyPath Class Reference

The path property class. More...

#include <PropertyPath.h>

Public Member Functions

 PropertyPath ()
 
 ~PropertyPath ()
 
Getter/setter
void setValue (const Toolpath &)
 set the part shape More...
 
const ToolpathgetValue (void) const
 get the part shape More...
 
Python interface
PyObjectgetPyObject (void)
 This method returns the Python wrapper for a C++ object. More...
 
void setPyObject (PyObject *value)
 
Save/restore
void Save (Base::Writer &writer) const
 This method is used to save properties to an XML document. More...
 
void Restore (Base::XMLReader &reader)
 This method is used to restore properties from an XML document. More...
 
void SaveDocFile (Base::Writer &writer) const
 This method is used to save large amounts of data to a binary file. More...
 
void RestoreDocFile (Base::Reader &reader)
 This method is used to restore large amounts of data from a file In this method you simply stream in your SaveDocFile() saved data. More...
 
App::PropertyCopy (void) const
 Returns a new copy of the property (mainly for Undo/Redo and transactions) More...
 
void Paste (const App::Property &from)
 Paste the value from the property (mainly for Undo/Redo and transactions) More...
 
unsigned int getMemSize (void) const
 This method is used to get the size of objects It is not meant to have the exact size, it is more or less an estimation which runs fast! Is it two bytes or a GB? This method is defined in Base::Persistence. More...
 
- Public Member Functions inherited from App::Property
virtual void aboutToSetChildValue (Property &)
 Called before a child property changing value. More...
 
virtual void afterRestore ()
 Called at the beginning of Document::afterRestore() More...
 
virtual App::ObjectIdentifier canonicalPath (const App::ObjectIdentifier &p) const
 Convert p to a canonical representation of it. More...
 
PropertyContainergetContainer (void) const
 Get a pointer to the PropertyContainer derived class the property belongs to. More...
 
const char * getDocumentation (void) const
 Get the documentation of this property. More...
 
virtual const char * getEditorName (void) const
 Get the class name of the associated property editor item. More...
 
std::string getFullName () const
 
const char * getGroup (void) const
 Get the group of this property. More...
 
const char * getName (void) const
 get the name of this property in the belonging container More...
 
virtual void getPaths (std::vector< App::ObjectIdentifier > &paths) const
 Get valid paths for this property; used by auto completer. More...
 
virtual const boost::any getPathValue (const App::ObjectIdentifier &path) const
 Get value of property. More...
 
virtual bool getPyPathValue (const App::ObjectIdentifier &, Py::Object &) const
 Get Python value of property. More...
 
unsigned long getStatus () const
 return the status bits More...
 
short getType (void) const
 Get the type of the property in the container. More...
 
virtual void hasSetChildValue (Property &)
 Called when a child property has changed value. More...
 
bool isReadOnly () const
 
bool isSinglePrecision () const
 Gets precision of properties using floating point numbers. More...
 
bool isTouched (void) const
 Test if this property is touched. More...
 
virtual void onContainerRestored ()
 Called before calling DocumentObject::onDocumentRestored() More...
 
 Property ()
 
void purgeTouched (void)
 Reset this property touched. More...
 
void setContainer (PropertyContainer *Father)
 Is called by the framework to set the father (container) More...
 
virtual void setPathValue (const App::ObjectIdentifier &path, const boost::any &value)
 Set value of property. More...
 
void setReadOnly (bool readOnly)
 Sets property editable/grayed out in property editor. More...
 
void setSinglePrecision (bool single)
 Sets precision of properties using floating point numbers to single, the default is double. More...
 
void setStatus (Status pos, bool on)
 
void setStatusValue (unsigned long status)
 
bool testStatus (Status pos) const
 
void touch ()
 Property status handling. More...
 
virtual ~Property ()
 
- Public Member Functions inherited from Base::Persistence
void dumpToStream (std::ostream &stream, int compression)
 
virtual Base::Type getTypeId (void) const
 
void restoreFromStream (std::istream &stream)
 
- Public Member Functions inherited from Base::BaseClass
 BaseClass ()
 Construction. More...
 
bool isDerivedFrom (const Type type) const
 
virtual ~BaseClass ()
 Destruction. More...
 

Additional Inherited Members

- Public Types inherited from App::Property
enum  Status {
  Touched = 0 , Immutable = 1 , ReadOnly = 2 , Hidden = 3 ,
  Transient = 4 , MaterialEdit = 5 , NoMaterialListEdit = 6 , Output = 7 ,
  LockDynamic = 8 , NoModify = 9 , PartialTrigger = 10 , NoRecompute = 11 ,
  Single = 12 , Ordered = 13 , EvalOnRestore = 14 , PropStaticBegin = 21 ,
  PropDynamic = 21 , PropNoPersist = 22 , PropNoRecompute = 23 , PropReadOnly = 24 ,
  PropTransient = 25 , PropHidden = 26 , PropOutput = 27 , PropStaticEnd = 28 ,
  User1 = 28 , User2 = 29 , User3 = 30 , User4 = 31
}
 
- Static Public Member Functions inherited from App::Property
static void destroy (Property *p)
 For safe deleting of a dynamic property. More...
 
- Static Public Member Functions inherited from Base::Persistence
static void * create (void)
 
static std::string encodeAttribute (const std::string &)
 Encodes an attribute upon saving. More...
 
static Base::Type getClassTypeId (void)
 
static void init (void)
 
- Static Public Member Functions inherited from Base::BaseClass
static void * create (void)
 
static Type getClassTypeId (void)
 
static void init (void)
 
- Protected Member Functions inherited from App::Property
virtual void aboutToSetValue (void)
 Gets called by all setValue() methods before the value has changed. More...
 
virtual void hasSetValue (void)
 Gets called by all setValue() methods after the value has changed. More...
 
virtual void verifyPath (const App::ObjectIdentifier &p) const
 Verify a path for the current property. More...
 
- Static Protected Member Functions inherited from Base::BaseClass
static void initSubclass (Base::Type &toInit, const char *ClassName, const char *ParentName, Type::instantiationMethod method=nullptr)
 
- Protected Attributes inherited from App::Property
std::bitset< 32 > StatusBits
 Status bits of the property The first 8 bits are used for the base system the rest can be used in descendent classes to mark special statuses on the objects. More...
 

Detailed Description

The path property class.


Constructor & Destructor Documentation

◆ PropertyPath()

PropertyPath::PropertyPath ( )

Referenced by Copy().

◆ ~PropertyPath()

PropertyPath::~PropertyPath ( )

Member Function Documentation

◆ Copy()

App::Property * PropertyPath::Copy ( void  ) const
virtual

Returns a new copy of the property (mainly for Undo/Redo and transactions)

Implements App::Property.

References PropertyPath().

◆ getMemSize()

unsigned int PropertyPath::getMemSize ( void  ) const
virtual

This method is used to get the size of objects It is not meant to have the exact size, it is more or less an estimation which runs fast! Is it two bytes or a GB? This method is defined in Base::Persistence.

See also
Base::Persistence

Reimplemented from App::Property.

◆ getPyObject()

PyObject * PropertyPath::getPyObject ( void  )
virtual

This method returns the Python wrapper for a C++ object.

It's in the responsibility of the programmer to do the correct reference counting. Basically there are two ways how to implement that: Either always return a new Python object then reference counting is not a matter or return always the same Python object then the reference counter must be incremented by one. However, it's absolutely forbidden to return always the same Python object without incrementing the reference counter.

The default implementation returns 'None'.

Reimplemented from Base::BaseClass.

◆ getValue()

◆ Paste()

void PropertyPath::Paste ( const App::Property from)
virtual

Paste the value from the property (mainly for Undo/Redo and transactions)

Implements App::Property.

References App::Property::aboutToSetValue(), and App::Property::hasSetValue().

◆ Restore()

void PropertyPath::Restore ( Base::XMLReader )
virtual

This method is used to restore properties from an XML document.

It uses the XMLReader class, which bases on SAX, to read the in Save() written information. Again the Vector as an example:

void PropertyVector::Restore(Base::XMLReader &reader)
{
// read my Element
reader.readElement("PropertyVector");
// get the value of my Attribute
_cVec.x = reader.getAttributeAsFloat("valueX");
_cVec.y = reader.getAttributeAsFloat("valueY");
_cVec.z = reader.getAttributeAsFloat("valueZ");
}
The XML reader class This is an important helper class for the store and retrieval system of objects ...
Definition: Reader.h:118
void readElement(const char *ElementName=0)
read until a start element is found (<name>) or start-end element (<name/>) (with special name if giv...
Definition: Reader.cpp:240
double getAttributeAsFloat(const char *AttrName) const
return the named attribute as a double floating point (does type checking)
Definition: Reader.cpp:158

Implements Base::Persistence.

References Base::XMLReader::addFile(), Base::XMLReader::getAttribute(), Base::XMLReader::getAttributeAsFloat(), Base::XMLReader::getAttributeAsInteger(), Base::XMLReader::hasAttribute(), Base::XMLReader::readElement(), and Path::Toolpath::SchemaVersion.

◆ RestoreDocFile()

void PropertyPath::RestoreDocFile ( Base::Reader )
virtual

This method is used to restore large amounts of data from a file In this method you simply stream in your SaveDocFile() saved data.

Again you have to apply for the call of this method in the Restore() call:

void PropertyMeshKernel::Restore(Base::XMLReader &reader)
{
reader.readElement("Mesh");
std::string file (reader.getAttribute("file") );
if(file == "")
{
// read XML
MeshCore::MeshDocXML restorer(*_pcMesh);
restorer.Restore(reader);
}else{
// initiate a file read
reader.addFile(file.c_str(),this);
}
}
const char * getAttribute(const char *AttrName) const
return the named attribute as a double floating point (does type checking)
Definition: Reader.cpp:173
const char * addFile(const char *Name, Base::Persistence *Object)
add a read request of a persistent object
Definition: Reader.cpp:371
file
Definition: DrawingExample.py:75

After you issued the reader.addFile() your RestoreDocFile() is called:

void PropertyMeshKernel::RestoreDocFile(Base::Reader &reader)
{
_pcMesh->Read( reader );
}
Definition: Reader.h:296
See also
Base::Reader,Base::XMLReader

Reimplemented from Base::Persistence.

References App::Property::aboutToSetValue(), Base::Persistence::getClassTypeId(), App::Property::getContainer(), App::Property::hasSetValue(), Base::BaseClass::isDerivedFrom(), and App::DocumentObject::setStatus().

◆ Save()

void PropertyPath::Save ( Base::Writer ) const
virtual

This method is used to save properties to an XML document.

A good example you'll find in PropertyStandard.cpp, e.g. the vector:

void PropertyVector::Save (Writer &writer) const
{
writer << writer.ind() << "<PropertyVector valueX=\"" << _cVec.x <<
"\" valueY=\"" << _cVec.y <<
"\" valueZ=\"" << _cVec.z <<"\"/>" << endl;
}

The writer.ind() expression writes the indentation, just for pretty printing of the XML. As you see, the writing of the XML document is not done with a DOM implementation because of performance reasons. Therefore the programmer has to take care that a valid XML document is written. This means closing tags and writing UTF-8.

See also
Base::Writer

Implements Base::Persistence.

◆ SaveDocFile()

void PropertyPath::SaveDocFile ( Base::Writer ) const
virtual

This method is used to save large amounts of data to a binary file.

Sometimes it makes no sense to write property data as XML. In case the amount of data is too big or the data type has a more effective way to save itself. In this cases it is possible to write the data in a separate file inside the document archive. In case you want do so you have to re-implement SaveDocFile(). First, you have to inform the framework in Save() that you want do so. Here an example from the Mesh module which can save a (pontetionaly big) triangle mesh:

void PropertyMeshKernel::Save (Base::Writer &writer) const
{
if (writer.isForceXML())
{
writer << writer.ind() << "<Mesh>" << std::endl;
MeshCore::MeshDocXML saver(*_pcMesh);
saver.Save(writer);
}else{
writer << writer.ind() << "<Mesh file=\"" << writer.addFile("MeshKernel.bms", this) << "\"/>" << std::endl;
}
The Writer class This is an important helper class for the store and retrieval system of persistent o...
Definition: Writer.h:58
const char * ind(void) const
get the current indentation
Definition: Writer.h:109
std::string addFile(const char *Name, const Base::Persistence *Object)
add a write request of a persistent object
Definition: Writer.cpp:165
bool isForceXML(void)
check on state
Definition: Writer.cpp:97

The writer.isForceXML() is an indication to force you to write XML. Regardless of size and effectiveness. The second part informs the Base::writer through writer.addFile("MeshKernel.bms", this) that this object wants to write a file with the given name. The method addFile() returns a unique name that then is written in the XML stream. This allows your RestoreDocFile() method to identify and read the file again. Later your SaveDocFile() method is called as many times as you issued the addFile() call:

void PropertyMeshKernel::SaveDocFile (Base::Writer &writer) const
{
_pcMesh->Write( writer );
}

In this method you can simply stream your content to the file (Base::Writer inheriting from ostream).

Reimplemented from Base::Persistence.

◆ setPyObject()

void PropertyPath::setPyObject ( PyObject value)
virtual

◆ setValue()

void PropertyPath::setValue ( const Toolpath pa)

set the part shape

References App::Property::aboutToSetValue(), and App::Property::hasSetValue().

Referenced by setPyObject().


The documentation for this class was generated from the following files:
  • Sources/FreeCAD/src/Mod/Path/App/PropertyPath.h
  • Sources/FreeCAD/src/Mod/Path/App/PropertyPath.cpp