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* Added function Blender.Draw.GetStringWidth().

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* Added doc and small test for Blender.Test
* trying changes to make Blender.Test.unlink() safer.
This commit is contained in:
Willian Padovani Germano
2003-06-26 02:03:51 +00:00
parent dd8f216691
commit 72f0cdace4
8 changed files with 408 additions and 174 deletions
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2
source/blender/python/api2_2x/BGL.h
View File

@@ -422,4 +422,4 @@ static PyObject *Method_##funcname (PyObject *self, PyObject *args) {\
/* #endif */
PyObject *M_BGL_Init(void);
PyObject *BGL_Init(void);

18
source/blender/python/api2_2x/Draw.c
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@@ -621,6 +621,24 @@ static PyObject *Method_String (PyObject *self, PyObject *args)
return (PyObject *) but;
}
static PyObject *Method_GetStringWidth (PyObject *self, PyObject *args)
{
char *text;
PyObject *width;
if (!PyArg_ParseTuple (args, "s", &text))
return EXPP_ReturnPyObjError (PyExc_TypeError,
"expected string argument");
width = PyInt_FromLong(BMF_GetStringWidth (G.font, text));
if (!width)
return EXPP_ReturnPyObjError (PyExc_MemoryError,
"couldn't create PyInt");
return width;
}
static PyObject *Method_Text (PyObject *self, PyObject *args)
{
char *text;

6
source/blender/python/api2_2x/Draw.h
View File

@@ -265,10 +265,14 @@ new String button\n\n\
static PyObject *Method_String (PyObject *self, PyObject *args);
static char Method_GetStringWidth_doc[] =
"(text) - Return the width in pixels of the given string";
static char Method_Text_doc[] =
"(text) - Draw text onscreen\n\n\
(text) The text to draw\n";
static PyObject *Method_GetStringWidth (PyObject *self, PyObject *args);
static PyObject *Method_Text (PyObject *self, PyObject *args);
#define _MethodDef(func, prefix) \
@@ -290,6 +294,8 @@ static struct PyMethodDef Draw_methods[] = {
MethodDef(Number),
MethodDef(String),
MethodDef(GetStringWidth),
MethodDef(Text),
MethodDef(Exit),

179
source/blender/python/api2_2x/Text.c
View File

@@ -41,7 +41,7 @@ static PyObject *M_Text_New(PyObject *self, PyObject *args, PyObject *keywords)
char buf[21];
int follow = 0;
Text *bl_text; /* blender text object */
C_Text *py_text; /* python wrapper */
PyObject *py_text; /* python wrapper */
if (!PyArg_ParseTuple(args, "|si", &name, &follow))
return EXPP_ReturnPyObjError (PyExc_AttributeError,
@@ -50,7 +50,7 @@ static PyObject *M_Text_New(PyObject *self, PyObject *args, PyObject *keywords)
bl_text = add_empty_text();
if (bl_text)
py_text = (C_Text *)PyObject_NEW(C_Text, &Text_Type);
py_text = Text_CreatePyObject (bl_text);
else
return EXPP_ReturnPyObjError (PyExc_RuntimeError,
"couldn't create Text Object in Blender");
@@ -58,8 +58,6 @@ static PyObject *M_Text_New(PyObject *self, PyObject *args, PyObject *keywords)
return EXPP_ReturnPyObjError (PyExc_MemoryError,
"couldn't create Text Object wrapper");
py_text->text = bl_text;
if (follow) bl_text->flags |= EXPP_TEXT_MODE_FOLLOW;
if (name) {
@@ -67,7 +65,7 @@ static PyObject *M_Text_New(PyObject *self, PyObject *args, PyObject *keywords)
rename_id(&bl_text->id, buf);
}
return (PyObject *)py_text;
return py_text;
}
/*****************************************************************************/
@@ -91,13 +89,14 @@ static PyObject *M_Text_Get(PyObject *self, PyObject *args)
if (name) { /* (name) - Search text by name */
C_Text *wanted_txt = NULL;
PyObject *wanted_txt = NULL;
while ((txt_iter) && (wanted_txt == NULL)) {
if (strcmp (name, txt_iter->id.name+2) == 0) {
wanted_txt = (C_Text *)PyObject_NEW(C_Text, &Text_Type);
if (wanted_txt) wanted_txt->text = txt_iter;
wanted_txt = Text_CreatePyObject (txt_iter);
}
txt_iter = txt_iter->id.next;
}
@@ -108,27 +107,27 @@ static PyObject *M_Text_Get(PyObject *self, PyObject *args)
return (EXPP_ReturnPyObjError (PyExc_NameError, error_msg));
}
return (PyObject *)wanted_txt;
return wanted_txt;
}
else { /* () - return a list of all texts in the scene */
int index = 0;
PyObject *txtlist, *pystr;
PyObject *txtlist, *pyobj;
txtlist = PyList_New (BLI_countlist (&(G.main->text)));
if (txtlist == NULL)
return (PythonReturnErrorObject (PyExc_MemoryError,
return (EXPP_ReturnPyObjError (PyExc_MemoryError,
"couldn't create PyList"));
while (txt_iter) {
pystr = PyString_FromString (txt_iter->id.name+2);
pyobj = Text_CreatePyObject(txt_iter);
if (!pystr)
return (PythonReturnErrorObject (PyExc_MemoryError,
if (!pyobj)
return (EXPP_ReturnPyObjError (PyExc_MemoryError,
"couldn't create PyString"));
PyList_SET_ITEM (txtlist, index, pystr);
PyList_SET_ITEM (txtlist, index, pyobj);
txt_iter = txt_iter->id.next;
index++;
@@ -139,7 +138,7 @@ static PyObject *M_Text_Get(PyObject *self, PyObject *args)
}
/*****************************************************************************/
/* Function: M_Text_Get */
/* Function: M_Text_Load */
/* Python equivalent: Blender.Text.Load */
/* Description: Receives a filename and returns the text object */
/* created from the corresponding file. */
@@ -148,13 +147,13 @@ static PyObject *M_Text_Load(PyObject *self, PyObject *args)
{
char *fname;
Text *txt_ptr;
C_Text *txt;
BPy_Text *txt;
if (!PyArg_ParseTuple(args, "s", &fname))
return (EXPP_ReturnPyObjError (PyExc_TypeError,
"expected string argument"));
txt = (C_Text *)PyObject_NEW(C_Text, &Text_Type);
txt = (BPy_Text *)PyObject_NEW(BPy_Text, &Text_Type);
if (!txt)
return EXPP_ReturnPyObjError (PyExc_MemoryError,
@@ -170,31 +169,33 @@ static PyObject *M_Text_Load(PyObject *self, PyObject *args)
return (PyObject *)txt;
}
/*@This function removes the text entry from the text editor.
* The text is not freed here, but inside the garbage collector. */
/* This function actually makes Blender dump core if the script is repeatedly
* executed, gotta investigate better */
/*****************************************************************************/
/* Function: M_Text_unlink */
/* Python equivalent: Blender.Text.unlink */
/* Description: Removes the given Text object from Blender */
/*****************************************************************************/
static PyObject *M_Text_unlink(PyObject *self, PyObject *args)
{
C_Text *textobj;
BPy_Text *textobj;
Text *text;
if (!PyArg_ParseTuple(args, "O!", &Text_Type, &textobj))
return EXPP_ReturnPyObjError (PyExc_TypeError,
"expected a Text object as argument");
BPY_clear_bad_scriptlinks(textobj->text);
free_text_controllers(textobj->text);
unlink_text(textobj->text);
/*@We actually should not free the text object here, but let the
* __del__ method of the wrapper do the job. This would require some
* changes in the GUI code though..
* So we mark the wrapper as invalid by setting wrapper->data = 0 */
free_libblock(&G.main->text, textobj->text);
text = ((BPy_Text *)textobj)->text;
textobj->text = NULL; /* XXX */
Py_XDECREF(textobj); /* XXX just a guess -- works ? */
if (!text)
return EXPP_ReturnPyObjError (PyExc_RuntimeError,
"this text was already unlinked!");
BPY_clear_bad_scriptlinks(text);
free_text_controllers(text);
unlink_text(text);
free_libblock(&G.main->text, text);
((BPy_Text *)textobj)->text = NULL;
Py_INCREF(Py_None);
return Py_None;
@@ -215,9 +216,27 @@ PyObject *Text_Init (void)
}
/*****************************************************************************/
/* Python C_Text methods: */
/* Function: Text_CreatePyObject */
/*****************************************************************************/
static PyObject *Text_getName(C_Text *self)
PyObject *Text_CreatePyObject (Text *txt)
{
BPy_Text *pytxt;
pytxt = (BPy_Text *)PyObject_NEW (BPy_Text, &Text_Type);
if (!pytxt)
return EXPP_ReturnPyObjError (PyExc_MemoryError,
"couldn't create BPy_Text PyObject");
pytxt->text = txt;
return (PyObject *)pytxt;
}
/*****************************************************************************/
/* Python BPy_Text methods: */
/*****************************************************************************/
static PyObject *Text_getName(BPy_Text *self)
{
PyObject *attr = PyString_FromString(self->text->id.name+2);
@@ -227,7 +246,7 @@ static PyObject *Text_getName(C_Text *self)
"couldn't get Text.name attribute");
}
static PyObject *Text_getFilename(C_Text *self)
static PyObject *Text_getFilename(BPy_Text *self)
{
PyObject *attr = PyString_FromString(self->text->name);
@@ -237,7 +256,7 @@ static PyObject *Text_getFilename(C_Text *self)
"couldn't get Text.filename attribute");
}
static PyObject *Text_getNLines(C_Text *self)
static PyObject *Text_getNLines(BPy_Text *self)
{ /* text->nlines isn't updated in Blender (?) */
int nlines = 0;
TextLine *line;
@@ -260,7 +279,7 @@ static PyObject *Text_getNLines(C_Text *self)
"couldn't get Text.nlines attribute");
}
static PyObject *Text_setName(C_Text *self, PyObject *args)
static PyObject *Text_setName(BPy_Text *self, PyObject *args)
{
char *name;
char buf[21];
@@ -277,7 +296,7 @@ static PyObject *Text_setName(C_Text *self, PyObject *args)
return Py_None;
}
static PyObject *Text_clear(C_Text *self, PyObject *args)
static PyObject *Text_clear(BPy_Text *self, PyObject *args)
{
int oldstate;
@@ -295,7 +314,7 @@ static PyObject *Text_clear(C_Text *self, PyObject *args)
return Py_None;
}
static PyObject *Text_set(C_Text *self, PyObject *args)
static PyObject *Text_set(BPy_Text *self, PyObject *args)
{
int ival;
char *attr;
@@ -315,7 +334,7 @@ static PyObject *Text_set(C_Text *self, PyObject *args)
return Py_None;
}
static PyObject *Text_write(C_Text *self, PyObject *args)
static PyObject *Text_write(BPy_Text *self, PyObject *args)
{
char *str;
int oldstate;
@@ -337,7 +356,7 @@ static PyObject *Text_write(C_Text *self, PyObject *args)
return Py_None;
}
static PyObject *Text_asLines(C_Text *self, PyObject *args)
static PyObject *Text_asLines(BPy_Text *self, PyObject *args)
{
TextLine *line;
PyObject *list, *ob;
@@ -363,24 +382,29 @@ static PyObject *Text_asLines(C_Text *self, PyObject *args)
}
/*****************************************************************************/
/* Function: TextDeAlloc */
/* Description: This is a callback function for the C_Text type. It is */
/* Function: Text_dealloc */
/* Description: This is a callback function for the BPy_Text type. It is */
/* the destructor function. */
/*****************************************************************************/
static void TextDeAlloc (C_Text *self)
static void Text_dealloc (BPy_Text *self)
{
PyObject_DEL (self);
}
/*****************************************************************************/
/* Function: TextGetAttr */
/* Description: This is a callback function for the C_Text type. It is */
/* the function that accesses C_Text member variables and */
/* Function: Text_getAttr */
/* Description: This is a callback function for the BPy_Text type. It is */
/* the function that accesses BPy_Text member variables and */
/* methods. */
/*****************************************************************************/
static PyObject* TextGetAttr (C_Text *self, char *name)
static PyObject *Text_getAttr (BPy_Text *self, char *name)
{
PyObject *attr = Py_None;
Text *text = self->text;
if (!text || !Text_IsLinked(text))
return EXPP_ReturnPyObjError (PyExc_RuntimeError,
"Text was already deleted!");
if (strcmp(name, "name") == 0)
attr = PyString_FromString(self->text->id.name+2);
@@ -402,19 +426,24 @@ static PyObject* TextGetAttr (C_Text *self, char *name)
if (attr != Py_None) return attr; /* attribute found, return its value */
/* not an attribute, search the methods table */
return Py_FindMethod(C_Text_methods, (PyObject *)self, name);
return Py_FindMethod(BPy_Text_methods, (PyObject *)self, name);
}
/*****************************************************************************/
/* Function: TextSetAttr */
/* Description: This is a callback function for the C_Text type. It is the */
/* Function: Text_setAttr */
/* Description: This is a callback function for the BPy_Text type. It is the */
/* function that changes Text Data members values. If this */
/* data is linked to a Blender Text, it also gets updated. */
/*****************************************************************************/
static int TextSetAttr (C_Text *self, char *name, PyObject *value)
static int Text_setAttr (BPy_Text *self, char *name, PyObject *value)
{
PyObject *valtuple;
PyObject *error = NULL;
Text *text = self->text;
if (!text || !Text_IsLinked(text))
return EXPP_ReturnIntError (PyExc_RuntimeError,
"Text was already deleted!");
/* We're playing a trick on the Python API users here. Even if they use
* Text.member = val instead of Text.setMember(value), we end up using the
@@ -445,36 +474,58 @@ static int TextSetAttr (C_Text *self, char *name, PyObject *value)
}
/*****************************************************************************/
/* Function: TextCompare */
/* Description: This is a callback function for the C_Text type. It */
/* Function: Text_compare */
/* Description: This is a callback function for the BPy_Text type. It */
/* compares two Text_Type objects. Only the "==" and "!=" */
/* comparisons are meaninful. Returns 0 for equality and -1 if */
/* they don't point to the same Blender Text struct. */
/* In Python it becomes 1 if they are equal, 0 otherwise. */
/*****************************************************************************/
static int TextCompare (C_Text *a, C_Text *b)
static int Text_compare (BPy_Text *a, BPy_Text *b)
{
Text *pa = a->text, *pb = b->text;
return (pa == pb) ? 0:-1;
}
/*****************************************************************************/
/* Function: TextPrint */
/* Description: This is a callback function for the C_Text type. It */
/* Function: Text_print */
/* Description: This is a callback function for the BPy_Text type. It */
/* builds a meaninful string to 'print' text objects. */
/*****************************************************************************/
static int TextPrint(C_Text *self, FILE *fp, int flags)
static int Text_print(BPy_Text *self, FILE *fp, int flags)
{
if (self->text && Text_IsLinked(self->text))
fprintf(fp, "[Text \"%s\"]", self->text->id.name+2);
else
fprintf(fp, "[Text <deleted>]");
return 0;
}
/*****************************************************************************/
/* Function: TextRepr */
/* Description: This is a callback function for the C_Text type. It */
/* Function: Text_repr */
/* Description: This is a callback function for the BPy_Text type. It */
/* builds a meaninful string to represent text objects. */
/*****************************************************************************/
static PyObject *TextRepr (C_Text *self)
static PyObject *Text_repr (BPy_Text *self)
{
if (self->text && Text_IsLinked(self->text))
return PyString_FromString(self->text->id.name+2);
else
return PyString_FromString("<deleted>");
}
/* internal function to confirm if a Text wasn't unlinked */
static int Text_IsLinked(Text *text)
{
Text *txt_iter = G.main->text.first;
while (txt_iter) {
if (text == txt_iter) return 1;
txt_iter = txt_iter->id.next;
}
return 0;
}

62
source/blender/python/api2_2x/Text.h
View File

@@ -76,11 +76,11 @@ returns None if not found.\n If 'name' is not specified, \
it returns a list of all Texts in the\ncurrent scene.";
static char M_Text_Load_doc[] =
"(filename) - return text from file filename as Text Object, \
"(filename) - return text from file filename as a Text Object, \
returns None if not found.\n";
static char M_Text_unlink_doc[] =
"(text) - remove text object 'text' from the text window";
"(text) - remove Text object 'text' from Blender";
/*****************************************************************************/
/* Python method structure definition for Blender.Text module: */
@@ -96,30 +96,30 @@ struct PyMethodDef M_Text_methods[] = {
};
/*****************************************************************************/
/* Python C_Text structure definition: */
/* Python BPy_Text structure definition: */
/*****************************************************************************/
typedef struct {
PyObject_HEAD
Text *text;
} C_Text;
} BPy_Text;
/*****************************************************************************/
/* Python C_Text methods declarations: */
/* Python BPy_Text methods declarations: */
/*****************************************************************************/
static PyObject *Text_getName(C_Text *self);
static PyObject *Text_getFilename(C_Text *self);
static PyObject *Text_getNLines(C_Text *self);
static PyObject *Text_setName(C_Text *self, PyObject *args);
static PyObject *Text_clear(C_Text *self, PyObject *args);
static PyObject *Text_write(C_Text *self, PyObject *args);
static PyObject *Text_set(C_Text *self, PyObject *args);
static PyObject *Text_asLines(C_Text *self, PyObject *args);
static PyObject *Text_getName(BPy_Text *self);
static PyObject *Text_getFilename(BPy_Text *self);
static PyObject *Text_getNLines(BPy_Text *self);
static PyObject *Text_setName(BPy_Text *self, PyObject *args);
static PyObject *Text_clear(BPy_Text *self, PyObject *args);
static PyObject *Text_write(BPy_Text *self, PyObject *args);
static PyObject *Text_set(BPy_Text *self, PyObject *args);
static PyObject *Text_asLines(BPy_Text *self, PyObject *args);
/*****************************************************************************/
/* Python C_Text methods table: */
/* Python BPy_Text methods table: */
/*****************************************************************************/
static PyMethodDef C_Text_methods[] = {
static PyMethodDef BPy_Text_methods[] = {
/* name, method, flags, doc */
{"getName", (PyCFunction)Text_getName, METH_NOARGS,
"() - Return Text Object name"},
@@ -143,12 +143,12 @@ static PyMethodDef C_Text_methods[] = {
/*****************************************************************************/
/* Python Text_Type callback function prototypes: */
/*****************************************************************************/
static void TextDeAlloc (C_Text *self);
static int TextPrint (C_Text *self, FILE *fp, int flags);
static int TextSetAttr (C_Text *self, char *name, PyObject *v);
static PyObject *TextGetAttr (C_Text *self, char *name);
static int TextCompare (C_Text *a, C_Text *b);
static PyObject *TextRepr (C_Text *self);
static void Text_dealloc (BPy_Text *self);
static int Text_print (BPy_Text *self, FILE *fp, int flags);
static int Text_setAttr (BPy_Text *self, char *name, PyObject *v);
static PyObject *Text_getAttr (BPy_Text *self, char *name);
static int Text_compare (BPy_Text *a, BPy_Text *b);
static PyObject *Text_repr (BPy_Text *self);
/*****************************************************************************/
/* Python Text_Type structure definition: */
@@ -157,16 +157,16 @@ PyTypeObject Text_Type =
{
PyObject_HEAD_INIT(NULL)
0, /* ob_size */
"Text", /* tp_name */
sizeof (C_Text), /* tp_basicsize */
"Blender Text", /* tp_name */
sizeof (BPy_Text), /* tp_basicsize */
0, /* tp_itemsize */
/* methods */
(destructor)TextDeAlloc, /* tp_dealloc */
(printfunc)TextPrint, /* tp_print */
(getattrfunc)TextGetAttr, /* tp_getattr */
(setattrfunc)TextSetAttr, /* tp_setattr */
(cmpfunc)TextCompare, /* tp_compare */
(reprfunc)TextRepr, /* tp_repr */
(destructor)Text_dealloc, /* tp_dealloc */
(printfunc)Text_print, /* tp_print */
(getattrfunc)Text_getAttr, /* tp_getattr */
(setattrfunc)Text_setAttr, /* tp_setattr */
(cmpfunc)Text_compare, /* tp_compare */
(reprfunc)Text_repr, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
0, /* tp_as_mapping */
@@ -174,8 +174,10 @@ PyTypeObject Text_Type =
0,0,0,0,0,0,
0, /* tp_doc */
0,0,0,0,0,0,
C_Text_methods, /* tp_methods */
BPy_Text_methods, /* tp_methods */
0, /* tp_members */
};
static int Text_IsLinked(Text *text);
#endif /* EXPP_TEXT_H */

124
source/blender/python/api2_2x/doc/Text.py Normal file
View File

@@ -0,0 +1,124 @@
# Blender.Text module and the Text PyType object
"""
The Blender.Text submodule
This module provides access to B{Text} objects in Blender.
Example::
import Blender
from Blender import Text
#
txt = Text.New("MyText") # create a new Text object
print Text.Get() # current list of Texts in Blender
txt.write("Appending some ") # appending text
txt.write("text to my\\n") # '\\n' inserts new-line markers
txt.write("text buffer.")
print txt.asLines() # retrieving the buffer as a list of lines
Text.unlink(txt) # removing a Text object
"""
def New (name = None, follow_cursor = 0):
"""
Create a new Text object.
@type name: string
@param name: The Text name.
@type follow_cursor: int
@param follow_cursor: The text follow flag: if 1, the text display always
follows the cursor.
@rtype: Blender Text
@return: The created Text Data object.
"""
def Get (name = None):
"""
Get the Text object(s) from Blender.
@type name: string
@param name: The name of the Text object.
@rtype: Blender Text or a list of Blender Texts
@return: It depends on the 'name' parameter:
- (name): The Text object with the given name;
- (): A list with all Text objects in the current scene.
"""
def Load (filename):
"""
Load a file into a Blender Text object.
@type filename: string
@param filename: The name of the file to load.
@rtype: Blender Text
@return: A Text object with the contents of the loaded file.
"""
def unlink(textobj):
"""
Unlink (remove) the given Text object from Blender.
@type textobj: Blender Text
@param textobj: The Text object to be deleted.
"""
class Text:
"""
The Text object
===============
This object gives access to Texts in Blender.
@cvar name: The Text name.
@cvar filename: The filename of the file loaded into this Text.
@cvar mode: The follow_mode flag: if 1 it is 'on'; if 0, 'off'.
@cvar nlines: The number of lines in this Text.
"""
def getName():
"""
Get the name of this Text object.
@rtype: string
"""
def setName(name):
"""
Set the name of this Text object.
@type name: string
@param name: The new name.
"""
def getFilename():
"""
Get the filename of the file loaded into this Text object.
@rtype: string
"""
def getNLines():
"""
Get the number of lines in this Text buffer.
@rtype: int
"""
def clear():
"""
Clear this Text object: its buffer becomes empty.
"""
def set(attribute, value):
"""
Set this Text's attributes.
@type attribute: string
@param attribute: The attribute to change:
currently, 'follow_cursor' is the only one available. It can be
turned 'on' with value = 1 and 'off' with value = 0.
@type value: int
@param value: The new attribute value.
"""
def write(data):
"""
Append a string to this Text buffer.
@type data: string
@param data: The string to append to the text buffer.
"""
def asLines():
"""
Retrieve the contents of this Text buffer as a list of strings.
@rtype: list
@return: A list of strings.
"""

29
source/blender/python/api2_2x/doc/testtext.py Normal file
View File

@@ -0,0 +1,29 @@
# Test Blender.Text
import Blender
from Blender import Text
txt = Text.New("MyText")
all_texts = Text.Get()
for i in [1,4,7]:
txt.write("%d\n%d\n%d little indians\n" % (i, i+1, i+2))
x = txt.getNLines()
txt.write("%d little indian boys!" % x)
lines = txt.asLines()
txt.clear()
txt.write("... Yo-ho-ho! And a bottle of rum!")
for s in lines:
print s
print all_texts
print txt.asLines()
Text.unlink(txt)
print all_texts

6
source/blender/python/api2_2x/modules.h
View File

@@ -44,6 +44,7 @@
#include <DNA_effect_types.h>
#include <DNA_meta_types.h>
#include <DNA_image_types.h>
#include <DNA_text_types.h>
/*****************************************************************************/
/* Global variables */
@@ -128,11 +129,14 @@ PyObject * Image_Init (void);
PyObject * Image_CreatePyObject (Image *image);
int Image_CheckPyObject (PyObject *pyobj);
/* Text */
PyObject * Text_Init (void);
PyObject * Text_CreatePyObject (Text *txt);
/* Init functions for other modules */
PyObject * Window_Init (void);
PyObject * Draw_Init (void);
PyObject * BGL_Init (void);
PyObject * Text_Init (void);
PyObject * M_World_Init (void);
#endif /* EXPP_modules_h */