143 lines
3.8 KiB
C
143 lines
3.8 KiB
C
/*
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* $Id$
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*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Contributor(s): Campbell Barton
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/** \file blender/python/intern/bpy_rna_callback.c
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* \ingroup pythonintern
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*/
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#include <Python.h>
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#include "RNA_types.h"
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#include "bpy_rna.h"
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#include "bpy_rna_callback.h"
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#include "bpy_util.h"
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#include "BLI_utildefines.h"
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#include "DNA_screen_types.h"
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#include "RNA_access.h"
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#include "BKE_context.h"
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#include "ED_space_api.h"
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/* use this to stop other capsules from being mis-used */
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#define RNA_CAPSULE_ID "RNA_HANDLE"
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#define RNA_CAPSULE_ID_INVALID "RNA_HANDLE_REMOVED"
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static void cb_region_draw(const bContext *C, ARegion *UNUSED(ar), void *customdata)
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{
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PyObject *cb_func, *cb_args, *result;
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PyGILState_STATE gilstate;
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bpy_context_set((bContext *)C, &gilstate);
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cb_func= PyTuple_GET_ITEM((PyObject *)customdata, 0);
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cb_args= PyTuple_GET_ITEM((PyObject *)customdata, 1);
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result= PyObject_CallObject(cb_func, cb_args);
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if(result) {
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Py_DECREF(result);
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}
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else {
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PyErr_Print();
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PyErr_Clear();
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}
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bpy_context_clear((bContext *)C, &gilstate);
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}
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PyObject *pyrna_callback_add(BPy_StructRNA *self, PyObject *args)
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{
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void *handle;
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PyObject *cb_func, *cb_args;
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char *cb_event_str= NULL;
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int cb_event;
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if (!PyArg_ParseTuple(args, "OO!|s:bpy_struct.callback_add", &cb_func, &PyTuple_Type, &cb_args, &cb_event_str))
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return NULL;
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if(!PyCallable_Check(cb_func)) {
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PyErr_SetString(PyExc_TypeError, "callback_add(): first argument isn't callable");
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return NULL;
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}
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if(RNA_struct_is_a(self->ptr.type, &RNA_Region)) {
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if(cb_event_str) {
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static EnumPropertyItem region_draw_mode_items[]= {
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{REGION_DRAW_POST_PIXEL, "POST_PIXEL", 0, "Post Pixel", ""},
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{REGION_DRAW_POST_VIEW, "POST_VIEW", 0, "Post View", ""},
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{REGION_DRAW_PRE_VIEW, "PRE_VIEW", 0, "Pre View", ""},
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{0, NULL, 0, NULL, NULL}};
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if(pyrna_enum_value_from_id(region_draw_mode_items, cb_event_str, &cb_event, "bpy_struct.callback_add()") < 0)
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return NULL;
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}
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else {
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cb_event= REGION_DRAW_POST_PIXEL;
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}
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handle= ED_region_draw_cb_activate(((ARegion *)self->ptr.data)->type, cb_region_draw, (void *)args, cb_event);
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Py_INCREF(args);
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}
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else {
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PyErr_SetString(PyExc_TypeError, "callback_add(): type does not suppport callbacks");
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return NULL;
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}
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return PyCapsule_New((void *)handle, RNA_CAPSULE_ID, NULL);
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}
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PyObject *pyrna_callback_remove(BPy_StructRNA *self, PyObject *args)
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{
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PyObject *py_handle;
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void *handle;
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void *customdata;
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if (!PyArg_ParseTuple(args, "O!:callback_remove", &PyCapsule_Type, &py_handle))
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return NULL;
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handle= PyCapsule_GetPointer(py_handle, RNA_CAPSULE_ID);
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if(handle==NULL) {
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PyErr_SetString(PyExc_ValueError, "callback_remove(handle): NULL handle given, invalid or already removed");
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return NULL;
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}
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if(RNA_struct_is_a(self->ptr.type, &RNA_Region)) {
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customdata= ED_region_draw_cb_customdata(handle);
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Py_DECREF((PyObject *)customdata);
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ED_region_draw_cb_exit(((ARegion *)self->ptr.data)->type, handle);
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}
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/* dont allow reuse */
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PyCapsule_SetName(py_handle, RNA_CAPSULE_ID_INVALID);
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Py_RETURN_NONE;
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}
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