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PythonCallbackObject Class Reference

This is a specialization on CallbackObject to allow a callback to directly call an arbitarary Python function. More...

Inheritance diagram for PythonCallbackObject:
CallbackObject TypedReferenceCount TypedObject ReferenceCount MemoryBase MemoryBase

List of all members.

Public Member Functions

 PythonCallbackObject (PyObject function)
 PythonCallbackObject ()
PyObject getFunction ()
 Returns the function that is called for the callback.
int getRefCount ()
 Returns the current reference count.
TypeHandle getType ()
int getTypeIndex ()
 Returns the internal index number associated with this object's TypeHandle, a unique number for each different type.
bool isExactType (TypeHandle handle)
 Returns true if the current object is the indicated type exactly.
bool isOfType (TypeHandle handle)
 Returns true if the current object is or derives from the indicated type.
 operator new (unsigned int size)
 output (ostream out)
 ref ()
 Explicitly increments the reference count.
 setFunction (PyObject function)
 Replaces the function that is called for the callback.
bool testRefCountIntegrity ()
 Does some easy checks to make sure that the reference count isn't completely bogus.
bool testRefCountNonzero ()
 Does some easy checks to make sure that the reference count isn't zero, or completely bogus.
bool unref ()
 Explicitly decrements the reference count.

Static Public Member Functions

static TypeHandle getClassType ()

Detailed Description

This is a specialization on CallbackObject to allow a callback to directly call an arbitarary Python function.

Powerful! But use with caution.


Constructor & Destructor Documentation

PythonCallbackObject ( PyObject  function)

Member Function Documentation

static TypeHandle getClassType ( ) [static]

Reimplemented from CallbackObject.

PyObject getFunction ( )

Returns the function that is called for the callback.

int getRefCount ( ) [inherited]

Returns the current reference count.

TypeHandle getType ( ) [inherited]

Reimplemented in AnimChannelBase.

int getTypeIndex ( ) [inherited]

Returns the internal index number associated with this object's TypeHandle, a unique number for each different type.

This is equivalent to get_type().get_index().

bool isExactType ( TypeHandle  handle) [inherited]

Returns true if the current object is the indicated type exactly.

bool isOfType ( TypeHandle  handle) [inherited]

Returns true if the current object is or derives from the indicated type.

operator new ( unsigned int  size)
output ( ostream  out) [inherited]
ref ( ) [inherited]

Explicitly increments the reference count.

User code should avoid using ref() and unref() directly, which can result in missed reference counts. Instead, let a PointerTo object manage the reference counting automatically.

This function is const, even though it changes the object, because generally fiddling with an object's reference count isn't considered part of fiddling with the object. An object might be const in other ways, but we still need to accurately count the number of references to it.

setFunction ( PyObject  function)

Replaces the function that is called for the callback.

runs. The parameter should be a Python callable object.

bool testRefCountIntegrity ( ) [inherited]

Does some easy checks to make sure that the reference count isn't completely bogus.

Returns true if ok, false otherwise.

Reimplemented in NodeReferenceCount, CachedTypedWritableReferenceCount, and NodeCachedReferenceCount.

bool testRefCountNonzero ( ) [inherited]

Does some easy checks to make sure that the reference count isn't zero, or completely bogus.

Returns true if ok, false otherwise.

bool unref ( ) [inherited]

Explicitly decrements the reference count.

Note that the object will not be implicitly deleted by unref() simply because the reference count drops to zero. (Having a member function delete itself is problematic.) However, see the helper function unref_delete().

User code should avoid using ref() and unref() directly, which can result in missed reference counts. Instead, let a PointerTo object manage the reference counting automatically.

This function is const, even though it changes the object, because generally fiddling with an object's reference count isn't considered part of fiddling with the object. An object might be const in other ways, but we still need to accurately count the number of references to it.

The return value is true if the new reference count is nonzero, false if it is zero.

Reimplemented in GeomVertexArrayFormat, and GeomVertexFormat.

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