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- template with an example of a modal operator drawing with opengl (draw a line on the screen)

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- access to event.mouse_region_x/y
- basic type checking to callback functions (use PyCapsule names)
This commit is contained in:
Campbell Barton
2010-02-28 09:36:02 +00:00
parent 67af290bd1
commit 5369bd9c21
4 changed files with 100 additions and 12 deletions
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30
source/blender/python/intern/bpy_rna_callback.c
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@@ -32,12 +32,9 @@
#include "BKE_context.h"
#include "ED_space_api.h"
EnumPropertyItem region_draw_mode_items[] = {
{REGION_DRAW_POST_VIEW, "POST_VIEW", 0, "Pose View", ""},
{REGION_DRAW_POST_PIXEL, "POST_PIXEL", 0, "Post Pixel", ""},
{REGION_DRAW_PRE_VIEW, "PRE_VIEW", 0, "Pre View", ""},
{0, NULL, 0, NULL, NULL}};
/* use this to stop other capsules from being mis-used */
#define RNA_CAPSULE_ID "RNA_HANDLE"
#define RNA_CAPSULE_ID_INVALID "RNA_HANDLE_REMOVED"
void cb_region_draw(const bContext *C, ARegion *ar, void *customdata)
{
@@ -74,6 +71,12 @@ PyObject *pyrna_callback_add(BPy_StructRNA *self, PyObject *args)
if(RNA_struct_is_a(self->ptr.type, &RNA_Region)) {
EnumPropertyItem region_draw_mode_items[] = {
{REGION_DRAW_POST_VIEW, "POST_VIEW", 0, "Pose View", ""},
{REGION_DRAW_POST_PIXEL, "POST_PIXEL", 0, "Post Pixel", ""},
{REGION_DRAW_PRE_VIEW, "PRE_VIEW", 0, "Pre View", ""},
{0, NULL, 0, NULL, NULL}};
if(pyrna_enum_value_from_id(region_draw_mode_items, cb_event_str, &cb_event, "bpy_struct.callback_add()") < 0)
return NULL;
@@ -81,24 +84,28 @@ PyObject *pyrna_callback_add(BPy_StructRNA *self, PyObject *args)
Py_INCREF(args);
}
else {
PyErr_SetString(PyExc_TypeError, "callbcak_add(): type does not suppport cllbacks");
PyErr_SetString(PyExc_TypeError, "callback_add(): type does not suppport callbacks");
return NULL;
}
return PyCapsule_New((void *)handle, NULL, NULL);
return PyCapsule_New((void *)handle, RNA_CAPSULE_ID, NULL);
}
PyObject *pyrna_callback_remove(BPy_StructRNA *self, PyObject *args)
{
PyObject *py_handle;
PyObject *py_args;
void *handle;
void *customdata;
if (!PyArg_ParseTuple(args, "O!:callback_remove", &PyCapsule_Type, &py_handle))
return NULL;
handle= PyCapsule_GetPointer(py_handle, NULL);
handle= PyCapsule_GetPointer(py_handle, RNA_CAPSULE_ID);
if(handle==NULL) {
PyErr_SetString(PyExc_ValueError, "callback_remove(handle): NULL handle given, invalid or already removed.");
return NULL;
}
if(RNA_struct_is_a(self->ptr.type, &RNA_Region)) {
customdata= ED_region_draw_cb_customdata(handle);
@@ -107,5 +114,8 @@ PyObject *pyrna_callback_remove(BPy_StructRNA *self, PyObject *args)
ED_region_draw_cb_exit(((ARegion *)self->ptr.data)->type, handle);
}
/* dont allow reuse */
PyCapsule_SetName(py_handle, RNA_CAPSULE_ID_INVALID);
Py_RETURN_NONE;
}