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#include "cv2_highgui.hpp"
#ifdef HAVE_OPENCV_HIGHGUI
#include "cv2_util.hpp"
#include "opencv2/highgui.hpp"
#include <map>
using namespace cv;
//======================================================================================================================
static void OnMouse(int event, int x, int y, int flags, void* param)
{
PyGILState_STATE gstate;
gstate = PyGILState_Ensure();
PyObject *o = (PyObject*)param;
PyObject *args = Py_BuildValue("iiiiO", event, x, y, flags, PyTuple_GetItem(o, 1));
PyObject *r = PyObject_Call(PyTuple_GetItem(o, 0), args, NULL);
if (r == NULL)
PyErr_Print();
else
Py_DECREF(r);
Py_DECREF(args);
PyGILState_Release(gstate);
}
PyObject *pycvSetMouseCallback(PyObject*, PyObject *args, PyObject *kw)
{
const char *keywords[] = { "window_name", "on_mouse", "param", NULL };
char* name;
PyObject *on_mouse;
PyObject *param = NULL;
if (!PyArg_ParseTupleAndKeywords(args, kw, "sO|O", (char**)keywords, &name, &on_mouse, ¶m))
return NULL;
if (!PyCallable_Check(on_mouse)) {
PyErr_SetString(PyExc_TypeError, "on_mouse must be callable");
return NULL;
}
if (param == NULL) {
param = Py_None;
}
PyObject* py_callback_info = Py_BuildValue("OO", on_mouse, param);
static std::map<std::string, PyObject*> registered_callbacks;
std::map<std::string, PyObject*>::iterator i = registered_callbacks.find(name);
if (i != registered_callbacks.end())
{
Py_DECREF(i->second);
i->second = py_callback_info;
}
else
{
registered_callbacks.insert(std::pair<std::string, PyObject*>(std::string(name), py_callback_info));
}
ERRWRAP2(setMouseCallback(name, OnMouse, py_callback_info));
Py_RETURN_NONE;
}
//======================================================================================================================
static void OnChange(int pos, void *param)
{
PyGILState_STATE gstate;
gstate = PyGILState_Ensure();
PyObject *o = (PyObject*)param;
PyObject *args = Py_BuildValue("(i)", pos);
PyObject *r = PyObject_Call(PyTuple_GetItem(o, 0), args, NULL);
if (r == NULL)
PyErr_Print();
else
Py_DECREF(r);
Py_DECREF(args);
PyGILState_Release(gstate);
}
// workaround for #20408, use nullptr, set value later
static int _createTrackbar(const String &trackbar_name, const String &window_name, int value, int count,
TrackbarCallback onChange, PyObject* py_callback_info)
{
int n = createTrackbar(trackbar_name, window_name, NULL, count, onChange, py_callback_info);
setTrackbarPos(trackbar_name, window_name, value);
return n;
}
PyObject *pycvCreateTrackbar(PyObject*, PyObject *args)
{
PyObject *on_change;
char* trackbar_name;
char* window_name;
int value;
int count;
if (!PyArg_ParseTuple(args, "ssiiO", &trackbar_name, &window_name, &value, &count, &on_change))
return NULL;
if (!PyCallable_Check(on_change)) {
PyErr_SetString(PyExc_TypeError, "on_change must be callable");
return NULL;
}
PyObject* py_callback_info = Py_BuildValue("OO", on_change, Py_None);
std::string name = std::string(window_name) + ":" + std::string(trackbar_name);
static std::map<std::string, PyObject*> registered_callbacks;
std::map<std::string, PyObject*>::iterator i = registered_callbacks.find(name);
if (i != registered_callbacks.end())
{
Py_DECREF(i->second);
i->second = py_callback_info;
}
else
{
registered_callbacks.insert(std::pair<std::string, PyObject*>(name, py_callback_info));
}
ERRWRAP2(_createTrackbar(trackbar_name, window_name, value, count, OnChange, py_callback_info));
Py_RETURN_NONE;
}
//======================================================================================================================
static void OnButtonChange(int state, void *param)
{
PyGILState_STATE gstate;
gstate = PyGILState_Ensure();
PyObject *o = (PyObject*)param;
PyObject *args;
if(PyTuple_GetItem(o, 1) != NULL)
{
args = Py_BuildValue("(iO)", state, PyTuple_GetItem(o,1));
}
else
{
args = Py_BuildValue("(i)", state);
}
PyObject *r = PyObject_Call(PyTuple_GetItem(o, 0), args, NULL);
if (r == NULL)
PyErr_Print();
else
Py_DECREF(r);
Py_DECREF(args);
PyGILState_Release(gstate);
}
PyObject *pycvCreateButton(PyObject*, PyObject *args, PyObject *kw)
{
const char* keywords[] = {"buttonName", "onChange", "userData", "buttonType", "initialButtonState", NULL};
PyObject *on_change;
PyObject *userdata = NULL;
char* button_name;
int button_type = 0;
int initial_button_state = 0;
if (!PyArg_ParseTupleAndKeywords(args, kw, "sO|Oii", (char**)keywords, &button_name, &on_change, &userdata, &button_type, &initial_button_state))
return NULL;
if (!PyCallable_Check(on_change)) {
PyErr_SetString(PyExc_TypeError, "onChange must be callable");
return NULL;
}
if (userdata == NULL) {
userdata = Py_None;
}
PyObject* py_callback_info = Py_BuildValue("OO", on_change, userdata);
std::string name(button_name);
static std::map<std::string, PyObject*> registered_callbacks;
std::map<std::string, PyObject*>::iterator i = registered_callbacks.find(name);
if (i != registered_callbacks.end())
{
Py_DECREF(i->second);
i->second = py_callback_info;
}
else
{
registered_callbacks.insert(std::pair<std::string, PyObject*>(name, py_callback_info));
}
ERRWRAP2(createButton(button_name, OnButtonChange, py_callback_info, button_type, initial_button_state != 0));
Py_RETURN_NONE;
}
#endif // HAVE_OPENCV_HIGHGUI
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