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ad61dd37ef059b14b8e929d14d64306dcc4ba207
blender-archive/source/blender/python/api2_2x/Image.c
Michel Selten a127b38760 * Fix compilation errors on Windows hopefully. Implemented the suggestion done 
by Aphex - thanks.
* Added the doc strings to the Object module.
* Added more functionality to the Object module.
2003-06-02 20:15:50 +00:00

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/*
*
* ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
*
* 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. The Blender
* Foundation also sells licenses for use in proprietary software under
* the Blender License. See http://www.blender.org/BL/ for information
* about this.
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* This is a new part of Blender.
*
* Contributor(s): Willian P. Germano
*
* ***** END GPL/BL DUAL LICENSE BLOCK *****
*/
#include <BKE_main.h>
#include <BKE_global.h>
#include <BKE_library.h>
#include <BKE_image.h>
#include <BLI_blenlib.h>
#include "gen_utils.h"
#include "Image.h"
/*****************************************************************************/
/* Python C_Image defaults: */
/*****************************************************************************/
#define EXPP_IMAGE_REP 1
#define EXPP_IMAGE_REP_MIN 1
#define EXPP_IMAGE_REP_MAX 16
/************************/
/*** The Image Module ***/
/************************/
/*****************************************************************************/
/* Python API function prototypes for the Image module. */
/*****************************************************************************/
static PyObject *M_Image_New (PyObject *self, PyObject *args,
PyObject *keywords);
static PyObject *M_Image_Get (PyObject *self, PyObject *args);
static PyObject *M_Image_Load (PyObject *self, PyObject *args);
/*****************************************************************************/
/* The following string definitions are used for documentation strings. */
/* In Python these will be written to the console when doing a */
/* Blender.Image.__doc__ */
/*****************************************************************************/
static char M_Image_doc[] =
"The Blender Image module\n\n";
static char M_Image_New_doc[] =
"() - return a new Image object -- unimplemented";
static char M_Image_Get_doc[] =
"(name) - return the image with the name 'name', \
returns None if not found.\n If 'name' is not specified, \
it returns a list of all images in the\ncurrent scene.";
static char M_Image_Load_doc[] =
"(filename) - return image from file filename as Image Object, \
returns None if not found.\n";
/*****************************************************************************/
/* Python method structure definition for Blender.Image module: */
/*****************************************************************************/
struct PyMethodDef M_Image_methods[] = {
{"New",(PyCFunction)M_Image_New, METH_VARARGS|METH_KEYWORDS,
M_Image_New_doc},
{"Get", M_Image_Get, METH_VARARGS, M_Image_Get_doc},
{"get", M_Image_Get, METH_VARARGS, M_Image_Get_doc},
{"Load", M_Image_Load, METH_VARARGS, M_Image_Load_doc},
{NULL, NULL, 0, NULL}
};
/*****************************************************************************/
/* Function: M_Image_New */
/* Python equivalent: Blender.Image.New */
/*****************************************************************************/
static PyObject *M_Image_New(PyObject *self, PyObject *args, PyObject *keywords)
{
printf ("In Image_New() - unimplemented in 2.25\n");
Py_INCREF(Py_None);
return Py_None;
}
/*****************************************************************************/
/* Function: M_Image_Get */
/* Python equivalent: Blender.Image.Get */
/* Description: Receives a string and returns the image object */
/* whose name matches the string. If no argument is */
/* passed in, a list of all image names in the */
/* current scene is returned. */
/*****************************************************************************/
static PyObject *M_Image_Get(PyObject *self, PyObject *args)
{
char *name = NULL;
Image *img_iter;
if (!PyArg_ParseTuple(args, "|s", &name))
return (EXPP_ReturnPyObjError (PyExc_TypeError,
"expected string argument (or nothing)"));
img_iter = G.main->image.first;
if (name) { /* (name) - Search image by name */
C_Image *wanted_image = NULL;
while ((img_iter) && (wanted_image == NULL)) {
if (strcmp (name, img_iter->id.name+2) == 0) {
wanted_image = (C_Image *)PyObject_NEW(C_Image, &Image_Type);
if (wanted_image) wanted_image->image = img_iter;
}
img_iter = img_iter->id.next;
}
if (wanted_image == NULL) { /* Requested image doesn't exist */
char error_msg[64];
PyOS_snprintf(error_msg, sizeof(error_msg),
"Image \"%s\" not found", name);
return (EXPP_ReturnPyObjError (PyExc_NameError, error_msg));
}
return (PyObject *)wanted_image;
}
else { /* () - return a list of all images in the scene */
int index = 0;
PyObject *img_list, *pystr;
img_list = PyList_New (BLI_countlist (&(G.main->image)));
if (img_list == NULL)
return (PythonReturnErrorObject (PyExc_MemoryError,
"couldn't create PyList"));
while (img_iter) {
pystr = PyString_FromString (img_iter->id.name+2);
if (!pystr)
return (PythonReturnErrorObject (PyExc_MemoryError,
"couldn't create PyString"));
PyList_SET_ITEM (img_list, index, pystr);
img_iter = img_iter->id.next;
index++;
}
return (img_list);
}
}
/*****************************************************************************/
/* Function: M_Image_Load */
/* Python equivalent: Blender.Image.Load */
/* Description: Receives a string and returns the image object */
/* whose filename matches the string. */
/*****************************************************************************/
static PyObject *M_Image_Load(PyObject *self, PyObject *args)
{
char *fname;
Image *img_ptr;
C_Image *img;
if (!PyArg_ParseTuple(args, "s", &fname))
return (EXPP_ReturnPyObjError (PyExc_TypeError,
"expected string argument"));
img = (C_Image *)PyObject_NEW(C_Image, &Image_Type);
if (!img)
return (EXPP_ReturnPyObjError (PyExc_MemoryError,
"couldn't create PyObject Image_Type"));
img_ptr = add_image(fname);
if (!img_ptr)
return (EXPP_ReturnPyObjError (PyExc_IOError,
"couldn't load image"));
img->image = img_ptr;
return (PyObject *)img;
}
/*****************************************************************************/
/* Function: M_Image_Init */
/*****************************************************************************/
PyObject *M_Image_Init (void)
{
PyObject *submodule;
Image_Type.ob_type = &PyType_Type;
submodule = Py_InitModule3("Blender.Image", M_Image_methods, M_Image_doc);
return (submodule);
}
/************************/
/*** The Image PyType ***/
/************************/
/*****************************************************************************/
/* Python C_Image methods declarations: */
/*****************************************************************************/
static PyObject *Image_getName(C_Image *self);
static PyObject *Image_getFilename(C_Image *self);
static PyObject *Image_setName(C_Image *self, PyObject *args);
static PyObject *Image_setXRep(C_Image *self, PyObject *args);
static PyObject *Image_setYRep(C_Image *self, PyObject *args);
/*****************************************************************************/
/* Python C_Image methods table: */
/*****************************************************************************/
static PyMethodDef C_Image_methods[] = {
/* name, method, flags, doc */
{"getName", (PyCFunction)Image_getName, METH_NOARGS,
"() - Return Image Data name"},
{"getFilename", (PyCFunction)Image_getFilename, METH_VARARGS,
"() - Return Image Data filename"},
{"setName", (PyCFunction)Image_setName, METH_VARARGS,
"(str) - Change Image Data name"},
{"setXRep", (PyCFunction)Image_setXRep, METH_VARARGS,
"(int) - Change Image Data x repetition value"},
{"setYRep", (PyCFunction)Image_setYRep, METH_VARARGS,
"(int) - Change Image Data y repetition value"},
{0}
};
/*****************************************************************************/
/* Python Image_Type callback function prototypes: */
/*****************************************************************************/
static void Image_Dealloc (C_Image *self);
static int Image_SetAttr (C_Image *self, char *name, PyObject *v);
static int Image_Compare (C_Image *a, C_Image *b);
static int Image_Print (C_Image *self, FILE *fp, int flags);
static PyObject *Image_GetAttr (C_Image *self, char *name);
static PyObject *Image_Repr (C_Image *self);
/*****************************************************************************/
/* Python Image_Type structure definition: */
/*****************************************************************************/
PyTypeObject Image_Type =
{
PyObject_HEAD_INIT(NULL)
0, /* ob_size */
"Image", /* tp_name */
sizeof (C_Image), /* tp_basicsize */
0, /* tp_itemsize */
/* methods */
(destructor)Image_Dealloc, /* tp_dealloc */
(printfunc)Image_Print, /* tp_print */
(getattrfunc)Image_GetAttr, /* tp_getattr */
(setattrfunc)Image_SetAttr, /* tp_setattr */
(cmpfunc)Image_Compare, /* tp_compare */
(reprfunc)Image_Repr, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
0, /* tp_as_mapping */
0, /* tp_as_hash */
0,0,0,0,0,0,
0, /* tp_doc */
0,0,0,0,0,0,
C_Image_methods, /* tp_methods */
0, /* tp_members */
};
/*****************************************************************************/
/* Function: ImageDealloc */
/* Description: This is a callback function for the C_Image type. It is */
/* the destructor function. */
/*****************************************************************************/
static void Image_Dealloc (C_Image *self)
{
PyObject_DEL (self);
}
/*****************************************************************************/
/* Function: Image_CreatePyObject */
/* Description: This function will create a new C_Image from an existing */
/* Blender image structure. */
/*****************************************************************************/
PyObject *Image_CreatePyObject (Image *image)
{
C_Image *py_img;
py_img = (C_Image *)PyObject_NEW (C_Image, &Image_Type);
if (!py_img)
return EXPP_ReturnPyObjError (PyExc_MemoryError,
"couldn't create C_Image object");
py_img->image = image;
return (PyObject *)py_img;
}
/*****************************************************************************/
/* Function: Image_CheckPyObject */
/* Description: This function returns true when the given PyObject is of the */
/* type Image. Otherwise it will return false. */
/*****************************************************************************/
int Image_CheckPyObject (PyObject *pyobj)
{
return (pyobj->ob_type == &Image_Type);
}
/*****************************************************************************/
/* Python C_Image methods: */
/*****************************************************************************/
static PyObject *Image_getName(C_Image *self)
{
PyObject *attr = PyString_FromString(self->image->id.name+2);
if (attr) return attr;
return (EXPP_ReturnPyObjError (PyExc_RuntimeError,
"couldn't get Image.name attribute"));
}
static PyObject *Image_getFilename(C_Image *self)
{
PyObject *attr = PyString_FromString(self->image->name);
if (attr) return attr;
return (EXPP_ReturnPyObjError (PyExc_RuntimeError,
"couldn't get Image.filename attribute"));
}
static PyObject *Image_setName(C_Image *self, PyObject *args)
{
char *name;
char buf[21];
if (!PyArg_ParseTuple(args, "s", &name))
return (EXPP_ReturnPyObjError (PyExc_TypeError,
"expected string argument"));
PyOS_snprintf(buf, sizeof(buf), "%s", name);
rename_id(&self->image->id, buf);
Py_INCREF(Py_None);
return Py_None;
}
static PyObject *Image_setXRep(C_Image *self, PyObject *args)
{
short value;
if (!PyArg_ParseTuple(args, "h", &value))
return (EXPP_ReturnPyObjError (PyExc_TypeError,
"expected int argument in [1,16]"));
if (value >= EXPP_IMAGE_REP_MIN || value <= EXPP_IMAGE_REP_MAX)
self->image->xrep = value;
else
return (EXPP_ReturnPyObjError (PyExc_ValueError,
"expected int argument in [1,16]"));
Py_INCREF(Py_None);
return Py_None;
}
static PyObject *Image_setYRep(C_Image *self, PyObject *args)
{
short value;
if (!PyArg_ParseTuple(args, "h", &value))
return (EXPP_ReturnPyObjError (PyExc_TypeError,
"expected int argument in [1,16]"));
if (value >= EXPP_IMAGE_REP_MIN || value <= EXPP_IMAGE_REP_MAX)
self->image->yrep = value;
else
return (EXPP_ReturnPyObjError (PyExc_ValueError,
"expected int argument in [1,16]"));
Py_INCREF(Py_None);
return Py_None;
}
/*****************************************************************************/
/* Function: Image_GetAttr */
/* Description: This is a callback function for the C_Image type. It is */
/* the function that accesses C_Image member variables and */
/* methods. */
/*****************************************************************************/
static PyObject *Image_GetAttr (C_Image *self, char *name)
{
PyObject *attr = Py_None;
if (strcmp(name, "name") == 0)
attr = PyString_FromString(self->image->id.name+2);
else if (strcmp(name, "filename") == 0)
attr = PyString_FromString(self->image->name);
else if (strcmp(name, "xrep") == 0)
attr = PyInt_FromLong(self->image->xrep);
else if (strcmp(name, "yrep") == 0)
attr = PyInt_FromLong(self->image->yrep);
else if (strcmp(name, "__members__") == 0)
attr = Py_BuildValue("[s,s,s,s]",
"name", "filename", "xrep", "yrep");
if (!attr)
return (EXPP_ReturnPyObjError (PyExc_MemoryError,
"couldn't create PyObject"));
if (attr != Py_None) return attr; /* attribute found, return its value */
/* not an attribute, search the methods table */
return Py_FindMethod(C_Image_methods, (PyObject *)self, name);
}
/*****************************************************************************/
/* Function: Image_SetAttr */
/* Description: This is a callback function for the C_Image type. It is the */
/* function that changes Image Data members values. If this */
/* data is linked to a Blender Image, it also gets updated. */
/*****************************************************************************/
static int Image_SetAttr (C_Image *self, char *name, PyObject *value)
{
PyObject *valtuple;
PyObject *error = NULL;
/* We're playing a trick on the Python API users here. Even if they use
* Image.member = val instead of Image.setMember(value), we end up using the
* function anyway, since it already has error checking, clamps to the right
* interval and updates the Blender Image structure when necessary. */
valtuple = Py_BuildValue("(N)", value); /*the set* functions expect a tuple*/
if (!valtuple)
return EXPP_ReturnIntError(PyExc_MemoryError,
"ImageSetAttr: couldn't create PyTuple");
if (strcmp (name, "name") == 0)
error = Image_setName (self, valtuple);
else if (strcmp (name, "xrep") == 0)
error = Image_setXRep (self, valtuple);
else if (strcmp (name, "yrep") == 0)
error = Image_setYRep (self, valtuple);
else { /* Error: no such member in the Image Data structure */
Py_DECREF(value);
Py_DECREF(valtuple);
return (EXPP_ReturnIntError (PyExc_KeyError,
"attribute not found or immutable"));
}
Py_DECREF(valtuple);
if (error != Py_None) return -1;
Py_DECREF(Py_None); /* incref'ed by the called set* function */
return 0; /* normal exit */
}
/*****************************************************************************/
/* Function: Image_Compare */
/* Description: This is a callback function for the C_Image type. It */
/* compares two Image_Type objects. Only the "==" and "!=" */
/* comparisons are meaninful. Returns 0 for equality and -1 if */
/* they don't point to the same Blender Image struct. */
/* In Python it becomes 1 if they are equal, 0 otherwise. */
/*****************************************************************************/
static int Image_Compare (C_Image *a, C_Image *b)
{
Image *pa = a->image, *pb = b->image;
return (pa == pb) ? 0:-1;
}
/*****************************************************************************/
/* Function: Image_Print */
/* Description: This is a callback function for the C_Image type. It */
/* builds a meaninful string to 'print' image objects. */
/*****************************************************************************/
static int Image_Print(C_Image *self, FILE *fp, int flags)
{
fprintf(fp, "[Image \"%s\"]", self->image->id.name+2);
return 0;
}
/*****************************************************************************/
/* Function: Image_Repr */
/* Description: This is a callback function for the C_Image type. It */
/* builds a meaninful string to represent image objects. */
/*****************************************************************************/
static PyObject *Image_Repr (C_Image *self)
{
return PyString_FromString(self->image->id.name+2);
}
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