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9e1729e51ccb298bc40be52d033184269444e9a8
wxWidgets/wxPython/src/helpers.cpp
Robin Dunn 9e1729e51c fix some warnings 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@43825 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2006-12-05 18:11:20 +00:00

3025 lines
86 KiB
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/////////////////////////////////////////////////////////////////////////////
// Name: helpers.cpp
// Purpose: Helper functions/classes for the wxPython extension module
//
// Author: Robin Dunn
//
// Created: 1-July-1997
// RCS-ID: $Id$
// Copyright: (c) 1998 by Total Control Software
// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
#undef DEBUG
#include <Python.h>
#include "wx/wxPython/wxPython_int.h"
#include "wx/wxPython/pyistream.h"
#include "wx/wxPython/swigver.h"
#include "wx/wxPython/twoitem.h"
#ifdef __WXMSW__
#include <wx/msw/private.h>
#include <wx/msw/winundef.h>
#include <wx/msw/msvcrt.h>
#endif
#ifdef __WXGTK__
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#include <gtk/gtk.h>
#include <gdk/gdkprivate.h>
#ifdef __WXGTK20__
#include <wx/gtk/win_gtk.h>
#else
#include <wx/gtk1/win_gtk.h>
#endif
#define GetXWindow(wxwin) (wxwin)->m_wxwindow ? \
GDK_WINDOW_XWINDOW(GTK_PIZZA((wxwin)->m_wxwindow)->bin_window) : \
GDK_WINDOW_XWINDOW((wxwin)->m_widget->window)
#include <locale.h>
#endif
#ifdef __WXX11__
#include "wx/x11/privx.h"
#define GetXWindow(wxwin) ((Window)(wxwin)->GetHandle())
#endif
#ifdef __WXMAC__
#include <wx/mac/private.h>
#endif
#include <wx/clipbrd.h>
#include <wx/mimetype.h>
#include <wx/image.h>
//----------------------------------------------------------------------
#if PYTHON_API_VERSION < 1009 && wxUSE_UNICODE
#error Python must support Unicode to use wxWindows Unicode
#endif
//----------------------------------------------------------------------
wxPyApp* wxPythonApp = NULL; // Global instance of application object
bool wxPyDoCleanup = false;
bool wxPyDoingCleanup = false;
#ifdef WXP_WITH_THREAD
#if !wxPyUSE_GIL_STATE
struct wxPyThreadState {
unsigned long tid;
PyThreadState* tstate;
wxPyThreadState(unsigned long _tid=0, PyThreadState* _tstate=NULL)
: tid(_tid), tstate(_tstate) {}
};
#include <wx/dynarray.h>
WX_DECLARE_OBJARRAY(wxPyThreadState, wxPyThreadStateArray);
#include <wx/arrimpl.cpp>
WX_DEFINE_OBJARRAY(wxPyThreadStateArray);
wxPyThreadStateArray* wxPyTStates = NULL;
wxMutex* wxPyTMutex = NULL;
#endif
#endif
#define DEFAULTENCODING_SIZE 64
static char wxPyDefaultEncoding[DEFAULTENCODING_SIZE] = "ascii";
static PyObject* wxPython_dict = NULL;
static PyObject* wxPyAssertionError = NULL;
static PyObject* wxPyNoAppError = NULL;
PyObject* wxPyPtrTypeMap = NULL;
#ifdef __WXMSW__ // If building for win32...
//----------------------------------------------------------------------
// This gets run when the DLL is loaded. We just need to save a handle.
//----------------------------------------------------------------------
extern "C"
BOOL WINAPI DllMain(
HINSTANCE hinstDLL, // handle to DLL module
DWORD fdwReason, // reason for calling function
LPVOID lpvReserved // reserved
)
{
// If wxPython is embedded in another wxWidgets app then
// the instance has already been set.
if (! wxGetInstance())
wxSetInstance(hinstDLL);
return true;
}
#endif
//----------------------------------------------------------------------
// Classes for implementing the wxp main application shell.
//----------------------------------------------------------------------
IMPLEMENT_ABSTRACT_CLASS(wxPyApp, wxApp);
wxPyApp::wxPyApp() {
m_assertMode = wxPYAPP_ASSERT_EXCEPTION;
m_startupComplete = false;
}
wxPyApp::~wxPyApp() {
wxPythonApp = NULL;
wxApp::SetInstance(NULL);
}
// This one isn't acutally called... We fake it with _BootstrapApp
bool wxPyApp::OnInit() {
return false;
}
int wxPyApp::MainLoop() {
int retval = 0;
DeletePendingObjects();
bool initialized = wxTopLevelWindows.GetCount() != 0;
if (initialized) {
if ( m_exitOnFrameDelete == Later ) {
m_exitOnFrameDelete = Yes;
}
retval = wxApp::MainLoop();
OnExit();
}
return retval;
}
bool wxPyApp::OnInitGui() {
bool rval=true;
wxApp::OnInitGui(); // in this case always call the base class version
wxPyBlock_t blocked = wxPyBeginBlockThreads();
if (wxPyCBH_findCallback(m_myInst, "OnInitGui"))
rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
wxPyEndBlockThreads(blocked);
return rval;
}
int wxPyApp::OnExit() {
int rval=0;
wxPyBlock_t blocked = wxPyBeginBlockThreads();
if (wxPyCBH_findCallback(m_myInst, "OnExit"))
rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
wxPyEndBlockThreads(blocked);
wxApp::OnExit(); // in this case always call the base class version
return rval;
}
void wxPyApp::ExitMainLoop() {
bool found;
wxPyBlock_t blocked = wxPyBeginBlockThreads();
if ((found = wxPyCBH_findCallback(m_myInst, "ExitMainLoop")))
wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
wxPyEndBlockThreads(blocked);
if (! found)
wxApp::ExitMainLoop();
}
#ifdef __WXDEBUG__
void wxPyApp::OnAssertFailure(const wxChar *file,
int line,
const wxChar *func,
const wxChar *cond,
const wxChar *msg)
{
// if we're not fully initialized then just log the error
if (! m_startupComplete) {
wxString buf;
buf.Alloc(4096);
buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
file, line, cond);
if ( func && *func )
buf << wxT(" in ") << func << wxT("()");
if (msg != NULL)
buf << wxT(": ") << msg;
wxLogDebug(buf);
return;
}
// If the OnAssert is overloaded in the Python class then call it...
bool found;
wxPyBlock_t blocked = wxPyBeginBlockThreads();
if ((found = wxPyCBH_findCallback(m_myInst, "OnAssert"))) {
PyObject* fso = wx2PyString(file);
PyObject* cso = wx2PyString(file);
PyObject* mso;
if (msg != NULL)
mso = wx2PyString(file);
else {
mso = Py_None; Py_INCREF(Py_None);
}
wxPyCBH_callCallback(m_myInst, Py_BuildValue("(OiOO)", fso, line, cso, mso));
Py_DECREF(fso);
Py_DECREF(cso);
Py_DECREF(mso);
}
wxPyEndBlockThreads(blocked);
// ...otherwise do our own thing with it
if (! found) {
// ignore it?
if (m_assertMode & wxPYAPP_ASSERT_SUPPRESS)
return;
// turn it into a Python exception?
if (m_assertMode & wxPYAPP_ASSERT_EXCEPTION) {
wxString buf;
buf.Alloc(4096);
buf.Printf(wxT("C++ assertion \"%s\" failed at %s(%d)"), cond, file, line);
if ( func && *func )
buf << wxT(" in ") << func << wxT("()");
if (msg != NULL)
buf << wxT(": ") << msg;
// set the exception
wxPyBlock_t blocked = wxPyBeginBlockThreads();
PyObject* s = wx2PyString(buf);
PyErr_SetObject(wxPyAssertionError, s);
Py_DECREF(s);
wxPyEndBlockThreads(blocked);
// Now when control returns to whatever API wrapper was called from
// Python it should detect that an exception is set and will return
// NULL, signalling the exception to Python.
}
// Send it to the normal log destination, but only if
// not _DIALOG because it will call this too
if ( (m_assertMode & wxPYAPP_ASSERT_LOG) && !(m_assertMode & wxPYAPP_ASSERT_DIALOG)) {
wxString buf;
buf.Alloc(4096);
buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
file, line, cond);
if ( func && *func )
buf << wxT(" in ") << func << wxT("()");
if (msg != NULL)
buf << wxT(": ") << msg;
wxLogDebug(buf);
}
// do the normal wx assert dialog?
if (m_assertMode & wxPYAPP_ASSERT_DIALOG)
wxApp::OnAssertFailure(file, line, func, cond, msg);
}
}
#endif
// For catching Apple Events
void wxPyApp::MacOpenFile(const wxString &fileName)
{
wxPyBlock_t blocked = wxPyBeginBlockThreads();
if (wxPyCBH_findCallback(m_myInst, "MacOpenFile")) {
PyObject* s = wx2PyString(fileName);
wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
Py_DECREF(s);
}
wxPyEndBlockThreads(blocked);
}
void wxPyApp::MacPrintFile(const wxString &fileName)
{
wxPyBlock_t blocked = wxPyBeginBlockThreads();
if (wxPyCBH_findCallback(m_myInst, "MacPrintFile")) {
PyObject* s = wx2PyString(fileName);
wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
Py_DECREF(s);
}
wxPyEndBlockThreads(blocked);
}
void wxPyApp::MacNewFile()
{
wxPyBlock_t blocked = wxPyBeginBlockThreads();
if (wxPyCBH_findCallback(m_myInst, "MacNewFile"))
wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
wxPyEndBlockThreads(blocked);
}
void wxPyApp::MacReopenApp()
{
wxPyBlock_t blocked = wxPyBeginBlockThreads();
if (wxPyCBH_findCallback(m_myInst, "MacReopenApp"))
wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
wxPyEndBlockThreads(blocked);
}
/*static*/
bool wxPyApp::GetMacSupportPCMenuShortcuts() {
return 0;
}
/*static*/
long wxPyApp::GetMacAboutMenuItemId() {
#ifdef __WXMAC__
return s_macAboutMenuItemId;
#else
return 0;
#endif
}
/*static*/
long wxPyApp::GetMacPreferencesMenuItemId() {
#ifdef __WXMAC__
return s_macPreferencesMenuItemId;
#else
return 0;
#endif
}
/*static*/
long wxPyApp::GetMacExitMenuItemId() {
#ifdef __WXMAC__
return s_macExitMenuItemId;
#else
return 0;
#endif
}
/*static*/
wxString wxPyApp::GetMacHelpMenuTitleName() {
#ifdef __WXMAC__
return s_macHelpMenuTitleName;
#else
return wxEmptyString;
#endif
}
/*static*/
void wxPyApp::SetMacSupportPCMenuShortcuts(bool) {
}
/*static*/
void wxPyApp::SetMacAboutMenuItemId(long val) {
#ifdef __WXMAC__
s_macAboutMenuItemId = val;
#endif
}
/*static*/
void wxPyApp::SetMacPreferencesMenuItemId(long val) {
#ifdef __WXMAC__
s_macPreferencesMenuItemId = val;
#endif
}
/*static*/
void wxPyApp::SetMacExitMenuItemId(long val) {
#ifdef __WXMAC__
s_macExitMenuItemId = val;
#endif
}
/*static*/
void wxPyApp::SetMacHelpMenuTitleName(const wxString& val) {
#ifdef __WXMAC__
s_macHelpMenuTitleName = val;
#endif
}
// This finishes the initialization of wxWindows and then calls the OnInit
// that should be present in the derived (Python) class.
void wxPyApp::_BootstrapApp()
{
static bool haveInitialized = false;
bool result;
wxPyBlock_t blocked;
PyObject* retval = NULL;
PyObject* pyint = NULL;
// Only initialize wxWidgets once
if (! haveInitialized) {
// Get any command-line args passed to this program from the sys module
int argc = 0;
char** argv = NULL;
blocked = wxPyBeginBlockThreads();
PyObject* sysargv = PySys_GetObject("argv");
PyObject* executable = PySys_GetObject("executable");
if (sysargv != NULL && executable != NULL) {
argc = PyList_Size(sysargv) + 1;
argv = new char*[argc+1];
argv[0] = strdup(PyString_AsString(executable));
int x;
for(x=1; x<argc; x++) {
PyObject *pyArg = PyList_GetItem(sysargv, x-1);
argv[x] = strdup(PyString_AsString(pyArg));
}
argv[argc] = NULL;
}
wxPyEndBlockThreads(blocked);
// Initialize wxWidgets
result = wxEntryStart(argc, argv);
// wxApp takes ownership of the argv array, don't delete it here
blocked = wxPyBeginBlockThreads();
if (! result) {
PyErr_SetString(PyExc_SystemError,
"wxEntryStart failed, unable to initialize wxWidgets!"
#ifdef __WXGTK__
" (Is DISPLAY set properly?)"
#endif
);
goto error;
}
// On wxGTK the locale will be changed to match the system settings,
// but Python before 2.4 needs to have LC_NUMERIC set to "C" in order
// for the floating point conversions and such to work right.
#if defined(__WXGTK__) && PY_VERSION_HEX < 0x02040000
setlocale(LC_NUMERIC, "C");
#endif
// wxSystemOptions::SetOption(wxT("mac.textcontrol-use-mlte"), 1);
wxPyEndBlockThreads(blocked);
haveInitialized = true;
}
else {
this->argc = 0;
this->argv = NULL;
}
// It's now ok to generate exceptions for assertion errors.
wxPythonApp->SetStartupComplete(true);
// Call the Python wxApp's OnPreInit and OnInit functions
blocked = wxPyBeginBlockThreads();
if (wxPyCBH_findCallback(m_myInst, "OnPreInit")) {
PyObject* method = m_myInst.GetLastFound();
PyObject* argTuple = PyTuple_New(0);
retval = PyEval_CallObject(method, argTuple);
m_myInst.clearRecursionGuard(method);
Py_DECREF(argTuple);
Py_DECREF(method);
if (retval == NULL)
goto error;
}
if (wxPyCBH_findCallback(m_myInst, "OnInit")) {
PyObject* method = m_myInst.GetLastFound();
PyObject* argTuple = PyTuple_New(0);
retval = PyEval_CallObject(method, argTuple);
m_myInst.clearRecursionGuard(method);
Py_DECREF(argTuple);
Py_DECREF(method);
if (retval == NULL)
// Don't PyErr_Print here, let the exception in this case go back
// up to the wx.PyApp.__init__ scope.
goto error;
pyint = PyNumber_Int(retval);
if (! pyint) {
PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
goto error;
}
result = PyInt_AS_LONG(pyint);
}
else {
// Is it okay if there is no OnInit? Probably so...
result = true;
}
if (! result) {
PyErr_SetString(PyExc_SystemExit, "OnInit returned false, exiting...");
}
error:
Py_XDECREF(retval);
Py_XDECREF(pyint);
wxPyEndBlockThreads(blocked);
};
//---------------------------------------------------------------------
//----------------------------------------------------------------------
#if 0
static char* wxPyCopyCString(const wxChar* src)
{
wxWX2MBbuf buff = (wxWX2MBbuf)wxConvCurrent->cWX2MB(src);
size_t len = strlen(buff);
char* dest = new char[len+1];
strcpy(dest, buff);
return dest;
}
#if wxUSE_UNICODE
static char* wxPyCopyCString(const char* src) // we need a char version too
{
size_t len = strlen(src);
char* dest = new char[len+1];
strcpy(dest, src);
return dest;
}
#endif
static wxChar* wxPyCopyWString(const char *src)
{
//wxMB2WXbuf buff = wxConvCurrent->cMB2WX(src);
wxString str(src, *wxConvCurrent);
return copystring(str);
}
#if wxUSE_UNICODE
static wxChar* wxPyCopyWString(const wxChar *src)
{
return copystring(src);
}
#endif
#endif
inline const char* dropwx(const char* name) {
if (name[0] == 'w' && name[1] == 'x')
return name+2;
else
return name;
}
//----------------------------------------------------------------------
// This function is called when the wx._core_ module is imported to do some
// initial setup. (Before there is a wxApp object.) The rest happens in
// wxPyApp::_BootstrapApp
void __wxPyPreStart(PyObject* moduleDict)
{
#ifdef __WXMSW__
// wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF
// | _CRTDBG_CHECK_ALWAYS_DF
// | _CRTDBG_DELAY_FREE_MEM_DF
// );
#endif
#ifdef WXP_WITH_THREAD
#if wxPyUSE_GIL_STATE
PyEval_InitThreads();
#else
PyEval_InitThreads();
wxPyTStates = new wxPyThreadStateArray;
wxPyTMutex = new wxMutex;
// Save the current (main) thread state in our array
PyThreadState* tstate = wxPyBeginAllowThreads();
wxPyEndAllowThreads(tstate);
#endif
#endif
// Ensure that the build options in the DLL (or whatever) match this build
wxApp::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, "wxPython");
wxInitAllImageHandlers();
}
void __wxPyCleanup() {
wxPyDoingCleanup = true;
if (wxPyDoCleanup) {
wxPyDoCleanup = false;
wxEntryCleanup();
}
#ifdef WXP_WITH_THREAD
#if !wxPyUSE_GIL_STATE
delete wxPyTMutex;
wxPyTMutex = NULL;
wxPyTStates->Empty();
delete wxPyTStates;
wxPyTStates = NULL;
#endif
#endif
}
// Save a reference to the dictionary of the wx._core module, and inject
// a few more things into it.
PyObject* __wxPySetDictionary(PyObject* /* self */, PyObject* args)
{
if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
return NULL;
if (!PyDict_Check(wxPython_dict)) {
PyErr_SetString(PyExc_TypeError,
"_wxPySetDictionary must have dictionary object!");
return NULL;
}
if (! wxPyPtrTypeMap)
wxPyPtrTypeMap = PyDict_New();
PyDict_SetItemString(wxPython_dict, "__wxPyPtrTypeMap", wxPyPtrTypeMap);
// Create an exception object to use for wxASSERTions
wxPyAssertionError = PyErr_NewException("wx._core.PyAssertionError",
PyExc_AssertionError, NULL);
PyDict_SetItemString(wxPython_dict, "PyAssertionError", wxPyAssertionError);
// Create an exception object to use when the app object hasn't been created yet
wxPyNoAppError = PyErr_NewException("wx._core.PyNoAppError",
PyExc_RuntimeError, NULL);
PyDict_SetItemString(wxPython_dict, "PyNoAppError", wxPyNoAppError);
#ifdef __WXMOTIF__
#define wxPlatform "__WXMOTIF__"
#define wxPlatName "wxMotif"
#endif
#ifdef __WXX11__
#define wxPlatform "__WXX11__"
#define wxPlatName "wxX11"
#endif
#ifdef __WXGTK__
#define wxPlatform "__WXGTK__"
#define wxPlatName "wxGTK"
#endif
#ifdef __WXMSW__
#define wxPlatform "__WXMSW__"
#define wxPlatName "wxMSW"
#endif
#ifdef __WXMAC__
#define wxPlatform "__WXMAC__"
#define wxPlatName "wxMac"
#endif
#ifdef __WXDEBUG__
int wxdebug = 1;
#else
int wxdebug = 0;
#endif
// These should be deprecated in favor of the PlatformInfo tuple built below...
PyDict_SetItemString(wxPython_dict, "Platform", PyString_FromString(wxPlatform));
PyDict_SetItemString(wxPython_dict, "USE_UNICODE", PyInt_FromLong(wxUSE_UNICODE));
PyDict_SetItemString(wxPython_dict, "__WXDEBUG__", PyInt_FromLong(wxdebug));
// Make a tuple of strings that gives more info about the platform.
PyObject* PlatInfo = PyList_New(0);
PyObject* obj;
#define _AddInfoString(st) \
obj = PyString_FromString(st); \
PyList_Append(PlatInfo, obj); \
Py_DECREF(obj)
_AddInfoString(wxPlatform);
_AddInfoString(wxPlatName);
#if wxUSE_UNICODE
_AddInfoString("unicode");
#else
_AddInfoString("ansi");
#endif
#ifdef __WXGTK__
#ifdef __WXGTK20__
_AddInfoString("gtk2");
#else
_AddInfoString("gtk1");
#endif
#endif
#ifdef __WXDEBUG__
_AddInfoString("wx-assertions-on");
#else
_AddInfoString("wx-assertions-off");
#endif
_AddInfoString(wxPy_SWIG_VERSION);
#ifdef __WXMAC__
#if wxMAC_USE_CORE_GRAPHICS
_AddInfoString("mac-cg");
#else
_AddInfoString("mac-qd");
#endif
#if wxMAC_USE_NATIVE_TOOLBAR
_AddInfoString("mac-native-tb");
#else
_AddInfoString("mac-no-native-tb");
#endif
#endif
#undef _AddInfoString
PyObject* PlatInfoTuple = PyList_AsTuple(PlatInfo);
Py_DECREF(PlatInfo);
PyDict_SetItemString(wxPython_dict, "PlatformInfo", PlatInfoTuple);
RETURN_NONE();
}
//---------------------------------------------------------------------------
// Check for existence of a wxApp, setting an exception if there isn't one.
// This doesn't need to aquire the GIL because it should only be called from
// an %exception before the lock is released.
bool wxPyCheckForApp() {
if (wxTheApp != NULL)
return true;
else {
PyErr_SetString(wxPyNoAppError, "The wx.App object must be created first!");
return false;
}
}
//---------------------------------------------------------------------------
void wxPyUserData_dtor(wxPyUserData* self) {
if (! wxPyDoingCleanup) {
wxPyBlock_t blocked = wxPyBeginBlockThreads();
Py_DECREF(self->m_obj);
self->m_obj = NULL;
wxPyEndBlockThreads(blocked);
}
}
void wxPyClientData_dtor(wxPyClientData* self) {
if (! wxPyDoingCleanup) { // Don't do it during cleanup as Python
// may have already garbage collected the object...
if (self->m_incRef) {
wxPyBlock_t blocked = wxPyBeginBlockThreads();
Py_DECREF(self->m_obj);
wxPyEndBlockThreads(blocked);
}
self->m_obj = NULL;
}
}
// This is called when an OOR controled object is being destroyed. Although
// the C++ object is going away there is no way to force the Python object
// (and all references to it) to die too. This causes problems (crashes) in
// wxPython when a python shadow object attempts to call a C++ method using
// the now bogus pointer... So to try and prevent this we'll do a little black
// magic and change the class of the python instance to a class that will
// raise an exception for any attempt to call methods with it. See
// _wxPyDeadObject in _core_ex.py for the implementation of this class.
void wxPyOORClientData_dtor(wxPyOORClientData* self) {
static PyObject* deadObjectClass = NULL;
wxPyBlock_t blocked = wxPyBeginBlockThreads();
if (deadObjectClass == NULL) {
deadObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyDeadObject");
// TODO: Can not wxASSERT here because inside a wxPyBeginBlock Threads,
// will lead to a deadlock when it tries to aquire the GIL again.
//wxASSERT_MSG(deadObjectClass != NULL, wxT("Can't get _wxPyDeadObject class!"));
Py_INCREF(deadObjectClass);
}
// Only if there is more than one reference to the object and we are
// holding the OOR reference:
if ( !wxPyDoingCleanup && self->m_obj->ob_refcnt > 1 && self->m_incRef) {
// bool isInstance = wxPyInstance_Check(self->m_obj);
// TODO same here
//wxASSERT_MSG(isInstance, wxT("m_obj not an instance!?!?!"));
// Call __del__, if there is one.
PyObject* func = PyObject_GetAttrString(self->m_obj, "__del__");
if (func) {
PyObject* rv = PyObject_CallMethod(self->m_obj, "__del__", NULL);
Py_XDECREF(rv);
Py_DECREF(func);
}
if (PyErr_Occurred())
PyErr_Clear(); // just ignore it for now
PyObject* dict = PyObject_GetAttrString(self->m_obj, "__dict__");
if (dict) {
// Clear the instance's dictionary
PyDict_Clear(dict);
// put the name of the old class into the instance, and then reset the
// class to be the dead class.
PyObject* klass = PyObject_GetAttrString(self->m_obj, "__class__");
PyObject* name = PyObject_GetAttrString(klass, "__name__");
PyDict_SetItemString(dict, "_name", name);
PyObject_SetAttrString(self->m_obj, "__class__", deadObjectClass);
//Py_INCREF(deadObjectClass);
Py_DECREF(klass);
Py_DECREF(name);
}
}
// m_obj is DECREF'd in the base class dtor...
wxPyEndBlockThreads(blocked);
}
//---------------------------------------------------------------------------
// Stuff used by OOR to find the right wxPython class type to return and to
// build it.
// The pointer type map is used when the "pointer" type name generated by SWIG
// is not the same as the shadow class name, for example wxPyTreeCtrl
// vs. wxTreeCtrl. It needs to be referenced in Python as well as from C++,
// so we'll just make it a Python dictionary in the wx module's namespace.
// (See __wxSetDictionary)
void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
if (! wxPyPtrTypeMap)
wxPyPtrTypeMap = PyDict_New();
PyDict_SetItemString(wxPyPtrTypeMap,
(char*)commonName,
PyString_FromString((char*)ptrName));
}
PyObject* wxPyMake_wxObject(wxObject* source, bool setThisOwn, bool checkEvtHandler) {
PyObject* target = NULL;
bool isEvtHandler = false;
bool isSizer = false;
if (source) {
// If it's derived from wxEvtHandler then there may
// already be a pointer to a Python object that we can use
// in the OOR data.
if (checkEvtHandler && wxIsKindOf(source, wxEvtHandler)) {
isEvtHandler = true;
wxEvtHandler* eh = (wxEvtHandler*)source;
wxPyOORClientData* data = (wxPyOORClientData*)eh->GetClientObject();
if (data) {
target = data->m_obj;
if (target)
Py_INCREF(target);
}
}
// Also check for wxSizer
if (!target && wxIsKindOf(source, wxSizer)) {
isSizer = true;
wxSizer* sz = (wxSizer*)source;
wxPyOORClientData* data = (wxPyOORClientData*)sz->GetClientObject();
if (data) {
target = data->m_obj;
if (target)
Py_INCREF(target);
}
}
if (! target) {
// Otherwise make it the old fashioned way by making a new shadow
// object and putting this pointer in it. Look up the class
// heirarchy until we find a class name that is located in the
// python module.
const wxClassInfo* info = source->GetClassInfo();
wxString name = info->GetClassName();
bool exists = wxPyCheckSwigType(name);
while (info && !exists) {
info = info->GetBaseClass1();
name = info->GetClassName();
exists = wxPyCheckSwigType(name);
}
if (info) {
target = wxPyConstructObject((void*)source, name, setThisOwn);
if (target && isEvtHandler)
((wxEvtHandler*)source)->SetClientObject(new wxPyOORClientData(target));
if (target && isSizer)
((wxSizer*)source)->SetClientObject(new wxPyOORClientData(target));
} else {
wxString msg(wxT("wxPython class not found for "));
msg += source->GetClassInfo()->GetClassName();
PyErr_SetString(PyExc_NameError, msg.mbc_str());
target = NULL;
}
}
} else { // source was NULL so return None.
Py_INCREF(Py_None); target = Py_None;
}
return target;
}
PyObject* wxPyMake_wxSizer(wxSizer* source, bool setThisOwn) {
return wxPyMake_wxObject(source, setThisOwn);
}
//---------------------------------------------------------------------------
#ifdef WXP_WITH_THREAD
#if !wxPyUSE_GIL_STATE
inline
unsigned long wxPyGetCurrentThreadId() {
return wxThread::GetCurrentId();
}
static wxPyThreadState gs_shutdownTState;
static
wxPyThreadState* wxPyGetThreadState() {
if (wxPyTMutex == NULL) // Python is shutting down...
return &gs_shutdownTState;
unsigned long ctid = wxPyGetCurrentThreadId();
wxPyThreadState* tstate = NULL;
wxPyTMutex->Lock();
for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
wxPyThreadState& info = wxPyTStates->Item(i);
if (info.tid == ctid) {
tstate = &info;
break;
}
}
wxPyTMutex->Unlock();
wxASSERT_MSG(tstate, wxT("PyThreadState should not be NULL!"));
return tstate;
}
static
void wxPySaveThreadState(PyThreadState* tstate) {
if (wxPyTMutex == NULL) { // Python is shutting down, assume a single thread...
gs_shutdownTState.tstate = tstate;
return;
}
unsigned long ctid = wxPyGetCurrentThreadId();
wxPyTMutex->Lock();
for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
wxPyThreadState& info = wxPyTStates->Item(i);
if (info.tid == ctid) {
#if 0
if (info.tstate != tstate)
wxLogMessage("*** tstate mismatch!???");
#endif
info.tstate = tstate; // allow for transient tstates
// Normally it will never change, but apparently COM callbacks
// (i.e. ActiveX controls) will (incorrectly IMHO) use a transient
// tstate which will then be garbage the next time we try to use
// it...
wxPyTMutex->Unlock();
return;
}
}
// not found, so add it...
wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
wxPyTMutex->Unlock();
}
#endif
#endif
// Calls from Python to wxWindows code are wrapped in calls to these
// functions:
PyThreadState* wxPyBeginAllowThreads() {
#ifdef WXP_WITH_THREAD
PyThreadState* saved = PyEval_SaveThread(); // Py_BEGIN_ALLOW_THREADS;
#if !wxPyUSE_GIL_STATE
wxPySaveThreadState(saved);
#endif
return saved;
#else
return NULL;
#endif
}
void wxPyEndAllowThreads(PyThreadState* saved) {
#ifdef WXP_WITH_THREAD
PyEval_RestoreThread(saved); // Py_END_ALLOW_THREADS;
#endif
}
// Calls from wxWindows back to Python code, or even any PyObject
// manipulations, PyDECREF's and etc. are wrapped in calls to these functions:
wxPyBlock_t wxPyBeginBlockThreads() {
#ifdef WXP_WITH_THREAD
if (! Py_IsInitialized()) {
return (wxPyBlock_t)0;
}
#if wxPyUSE_GIL_STATE
PyGILState_STATE state = PyGILState_Ensure();
return state;
#else
PyThreadState *current = _PyThreadState_Current;
// Only block if there wasn't already a tstate, or if the current one is
// not the one we are wanting to change to. This should prevent deadlock
// if there are nested calls to wxPyBeginBlockThreads
wxPyBlock_t blocked = false;
wxPyThreadState* tstate = wxPyGetThreadState();
if (current != tstate->tstate) {
PyEval_RestoreThread(tstate->tstate);
blocked = true;
}
return blocked;
#endif
#else
return (wxPyBlock_t)0;
#endif
}
void wxPyEndBlockThreads(wxPyBlock_t blocked) {
#ifdef WXP_WITH_THREAD
if (! Py_IsInitialized()) {
return;
}
#if wxPyUSE_GIL_STATE
PyGILState_Release(blocked);
#else
// Only unblock if we blocked in the last call to wxPyBeginBlockThreads.
// The value of blocked passed in needs to be the same as that returned
// from wxPyBeginBlockThreads at the same nesting level.
if ( blocked ) {
PyEval_SaveThread();
}
#endif
#endif
}
//---------------------------------------------------------------------------
// wxPyInputStream and wxPyCBInputStream methods
void wxPyInputStream::close() {
/* do nothing for now */
}
void wxPyInputStream::flush() {
/* do nothing for now */
}
bool wxPyInputStream::eof() {
if (m_wxis)
return m_wxis->Eof();
else
return true;
}
wxPyInputStream::~wxPyInputStream() {
if (m_wxis)
delete m_wxis;
}
PyObject* wxPyInputStream::read(int size) {
PyObject* obj = NULL;
wxMemoryBuffer buf;
const int BUFSIZE = 1024;
// check if we have a real wxInputStream to work with
if (!m_wxis) {
wxPyBlock_t blocked = wxPyBeginBlockThreads();
PyErr_SetString(PyExc_IOError, "no valid C-wxInputStream");
wxPyEndBlockThreads(blocked);
return NULL;
}
if (size < 0) {
// read while bytes are available on the stream
while ( m_wxis->CanRead() ) {
m_wxis->Read(buf.GetAppendBuf(BUFSIZE), BUFSIZE);
buf.UngetAppendBuf(m_wxis->LastRead());
}
} else { // Read only size number of characters
m_wxis->Read(buf.GetWriteBuf(size), size);
buf.UngetWriteBuf(m_wxis->LastRead());
}
// error check
wxPyBlock_t blocked = wxPyBeginBlockThreads();
wxStreamError err = m_wxis->GetLastError();
if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
}
else {
// We use only strings for the streams, not unicode
obj = PyString_FromStringAndSize(buf, buf.GetDataLen());
}
wxPyEndBlockThreads(blocked);
return obj;
}
PyObject* wxPyInputStream::readline(int size) {
PyObject* obj = NULL;
wxMemoryBuffer buf;
int i;
char ch;
// check if we have a real wxInputStream to work with
if (!m_wxis) {
wxPyBlock_t blocked = wxPyBeginBlockThreads();
PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
wxPyEndBlockThreads(blocked);
return NULL;
}
// read until \n or byte limit reached
for (i=ch=0; (ch != '\n') && (m_wxis->CanRead()) && ((size < 0) || (i < size)); i++) {
ch = m_wxis->GetC();
buf.AppendByte(ch);
}
// errorcheck
wxPyBlock_t blocked = wxPyBeginBlockThreads();
wxStreamError err = m_wxis->GetLastError();
if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
}
else {
// We use only strings for the streams, not unicode
obj = PyString_FromStringAndSize((char*)buf.GetData(), buf.GetDataLen());
}
wxPyEndBlockThreads(blocked);
return obj;
}
PyObject* wxPyInputStream::readlines(int sizehint) {
PyObject* pylist;
// check if we have a real wxInputStream to work with
if (!m_wxis) {
wxPyBlock_t blocked = wxPyBeginBlockThreads();
PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
wxPyEndBlockThreads(blocked);
return NULL;
}
// init list
wxPyBlock_t blocked = wxPyBeginBlockThreads();
pylist = PyList_New(0);
wxPyEndBlockThreads(blocked);
if (!pylist) {
wxPyBlock_t blocked = wxPyBeginBlockThreads();
PyErr_NoMemory();
wxPyEndBlockThreads(blocked);
return NULL;
}
// read sizehint bytes or until EOF
int i;
for (i=0; (m_wxis->CanRead()) && ((sizehint < 0) || (i < sizehint));) {
PyObject* s = this->readline();
if (s == NULL) {
wxPyBlock_t blocked = wxPyBeginBlockThreads();
Py_DECREF(pylist);
wxPyEndBlockThreads(blocked);
return NULL;
}
wxPyBlock_t blocked = wxPyBeginBlockThreads();
PyList_Append(pylist, s);
i += PyString_Size(s);
wxPyEndBlockThreads(blocked);
}
// error check
wxStreamError err = m_wxis->GetLastError();
if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
wxPyBlock_t blocked = wxPyBeginBlockThreads();
Py_DECREF(pylist);
PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
wxPyEndBlockThreads(blocked);
return NULL;
}
return pylist;
}
void wxPyInputStream::seek(int offset, int whence) {
if (m_wxis)
m_wxis->SeekI(offset, wxSeekMode(whence));
}
int wxPyInputStream::tell(){
if (m_wxis)
return m_wxis->TellI();
else return 0;
}
wxPyCBInputStream::wxPyCBInputStream(PyObject *r, PyObject *s, PyObject *t, bool block)
: wxInputStream(), m_read(r), m_seek(s), m_tell(t), m_block(block)
{}
wxPyCBInputStream::wxPyCBInputStream(const wxPyCBInputStream& other)
{
m_read = other.m_read;
m_seek = other.m_seek;
m_tell = other.m_tell;
m_block = other.m_block;
Py_INCREF(m_read);
Py_INCREF(m_seek);
Py_INCREF(m_tell);
}
wxPyCBInputStream::~wxPyCBInputStream() {
wxPyBlock_t blocked = wxPyBlock_t_default;
if (m_block) blocked = wxPyBeginBlockThreads();
Py_XDECREF(m_read);
Py_XDECREF(m_seek);
Py_XDECREF(m_tell);
if (m_block) wxPyEndBlockThreads(blocked);
}
wxPyCBInputStream* wxPyCBInputStream::create(PyObject *py, bool block) {
wxPyBlock_t blocked = wxPyBlock_t_default;
if (block) blocked = wxPyBeginBlockThreads();
PyObject* read = getMethod(py, "read");
PyObject* seek = getMethod(py, "seek");
PyObject* tell = getMethod(py, "tell");
if (!read) {
PyErr_SetString(PyExc_TypeError, "Not a file-like object");
Py_XDECREF(read);
Py_XDECREF(seek);
Py_XDECREF(tell);
if (block) wxPyEndBlockThreads(blocked);
return NULL;
}
if (block) wxPyEndBlockThreads(blocked);
return new wxPyCBInputStream(read, seek, tell, block);
}
wxPyCBInputStream* wxPyCBInputStream_create(PyObject *py, bool block) {
return wxPyCBInputStream::create(py, block);
}
wxPyCBInputStream* wxPyCBInputStream_copy(wxPyCBInputStream* other) {
return new wxPyCBInputStream(*other);
}
PyObject* wxPyCBInputStream::getMethod(PyObject* py, char* name) {
if (!PyObject_HasAttrString(py, name))
return NULL;
PyObject* o = PyObject_GetAttrString(py, name);
if (!PyMethod_Check(o) && !PyCFunction_Check(o)) {
Py_DECREF(o);
return NULL;
}
return o;
}
wxFileOffset wxPyCBInputStream::GetLength() const {
wxPyCBInputStream* self = (wxPyCBInputStream*)this; // cast off const
if (m_seek && m_tell) {
wxFileOffset temp = self->OnSysTell();
wxFileOffset ret = self->OnSysSeek(0, wxFromEnd);
self->OnSysSeek(temp, wxFromStart);
return ret;
}
else
return wxInvalidOffset;
}
size_t wxPyCBInputStream::OnSysRead(void *buffer, size_t bufsize) {
if (bufsize == 0)
return 0;
wxPyBlock_t blocked = wxPyBeginBlockThreads();
PyObject* arglist = Py_BuildValue("(i)", bufsize);
PyObject* result = PyEval_CallObject(m_read, arglist);
Py_DECREF(arglist);
size_t o = 0;
if ((result != NULL) && PyString_Check(result)) {
o = PyString_Size(result);
if (o == 0)
m_lasterror = wxSTREAM_EOF;
if (o > bufsize)
o = bufsize;
memcpy((char*)buffer, PyString_AsString(result), o); // strings only, not unicode...
Py_DECREF(result);
}
else
m_lasterror = wxSTREAM_READ_ERROR;
wxPyEndBlockThreads(blocked);
return o;
}
size_t wxPyCBInputStream::OnSysWrite(const void *buffer, size_t bufsize) {
m_lasterror = wxSTREAM_WRITE_ERROR;
return 0;
}
wxFileOffset wxPyCBInputStream::OnSysSeek(wxFileOffset off, wxSeekMode mode) {
wxPyBlock_t blocked = wxPyBeginBlockThreads();
PyObject* arglist = PyTuple_New(2);
if (sizeof(wxFileOffset) > sizeof(long))
// wxFileOffset is a 64-bit value...
PyTuple_SET_ITEM(arglist, 0, PyLong_FromLongLong(off));
else
PyTuple_SET_ITEM(arglist, 0, PyInt_FromLong(off));
PyTuple_SET_ITEM(arglist, 1, PyInt_FromLong(mode));
PyObject* result = PyEval_CallObject(m_seek, arglist);
Py_DECREF(arglist);
Py_XDECREF(result);
wxPyEndBlockThreads(blocked);
return OnSysTell();
}
wxFileOffset wxPyCBInputStream::OnSysTell() const {
wxPyBlock_t blocked = wxPyBeginBlockThreads();
PyObject* arglist = Py_BuildValue("()");
PyObject* result = PyEval_CallObject(m_tell, arglist);
Py_DECREF(arglist);
wxFileOffset o = 0;
if (result != NULL) {
if (PyLong_Check(result))
o = PyLong_AsLongLong(result);
else
o = PyInt_AsLong(result);
Py_DECREF(result);
};
wxPyEndBlockThreads(blocked);
return o;
}
//----------------------------------------------------------------------
IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
wxPyCallback::wxPyCallback(PyObject* func) {
m_func = func;
Py_INCREF(m_func);
}
wxPyCallback::wxPyCallback(const wxPyCallback& other) {
m_func = other.m_func;
Py_INCREF(m_func);
}
wxPyCallback::~wxPyCallback() {
wxPyBlock_t blocked = wxPyBeginBlockThreads();
Py_DECREF(m_func);
wxPyEndBlockThreads(blocked);
}
#define wxPy_PRECALLINIT "_preCallInit"
#define wxPy_POSTCALLCLEANUP "_postCallCleanup"
// This function is used for all events destined for Python event handlers.
void wxPyCallback::EventThunker(wxEvent& event) {
wxPyCallback* cb = (wxPyCallback*)event.m_callbackUserData;
PyObject* func = cb->m_func;
PyObject* result;
PyObject* arg;
PyObject* tuple;
bool checkSkip = false;
wxPyBlock_t blocked = wxPyBeginBlockThreads();
wxString className = event.GetClassInfo()->GetClassName();
// If the event is one of these types then pass the original
// event object instead of the one passed to us.
if ( className == wxT("wxPyEvent") ) {
arg = ((wxPyEvent*)&event)->GetSelf();
checkSkip = ((wxPyEvent*)&event)->GetCloned();
}
else if ( className == wxT("wxPyCommandEvent") ) {
arg = ((wxPyCommandEvent*)&event)->GetSelf();
checkSkip = ((wxPyCommandEvent*)&event)->GetCloned();
}
else {
arg = wxPyConstructObject((void*)&event, className);
}
if (!arg) {
PyErr_Print();
} else {
// "intern" the pre/post method names to speed up the HasAttr
static PyObject* s_preName = NULL;
static PyObject* s_postName = NULL;
if (s_preName == NULL) {
s_preName = PyString_FromString(wxPy_PRECALLINIT);
s_postName = PyString_FromString(wxPy_POSTCALLCLEANUP);
}
// Check if the event object needs some preinitialization
if (PyObject_HasAttr(arg, s_preName)) {
result = PyObject_CallMethodObjArgs(arg, s_preName, arg, NULL);
if ( result ) {
Py_DECREF(result); // result is ignored, but we still need to decref it
PyErr_Clear(); // Just in case...
} else {
PyErr_Print();
}
}
// Call the event handler, passing the event object
tuple = PyTuple_New(1);
PyTuple_SET_ITEM(tuple, 0, arg); // steals ref to arg
result = PyEval_CallObject(func, tuple);
if ( result ) {
Py_DECREF(result); // result is ignored, but we still need to decref it
PyErr_Clear(); // Just in case...
} else {
PyErr_Print();
}
// Check if the event object needs some post cleanup
if (PyObject_HasAttr(arg, s_postName)) {
result = PyObject_CallMethodObjArgs(arg, s_postName, arg, NULL);
if ( result ) {
Py_DECREF(result); // result is ignored, but we still need to decref it
PyErr_Clear(); // Just in case...
} else {
PyErr_Print();
}
}
if ( checkSkip ) {
// if the event object was one of our special types and
// it had been cloned, then we need to extract the Skipped
// value from the original and set it in the clone.
result = PyObject_CallMethod(arg, "GetSkipped", "");
if ( result ) {
event.Skip(PyInt_AsLong(result));
Py_DECREF(result);
} else {
PyErr_Print();
}
}
Py_DECREF(tuple);
}
wxPyEndBlockThreads(blocked);
}
//----------------------------------------------------------------------
wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
m_lastFound = NULL;
m_self = other.m_self;
m_class = other.m_class;
if (m_self) {
Py_INCREF(m_self);
Py_INCREF(m_class);
}
}
void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) {
m_self = self;
m_class = klass;
m_incRef = incref;
if (incref) {
Py_INCREF(m_self);
Py_INCREF(m_class);
}
}
#if PYTHON_API_VERSION >= 1011
// Prior to Python 2.2 PyMethod_GetClass returned the class object
// in which the method was defined. Starting with 2.2 it returns
// "class that asked for the method" which seems totally bogus to me
// but apprently it fixes some obscure problem waiting to happen in
// Python. Since the API was not documented Guido and the gang felt
// safe in changing it. Needless to say that totally screwed up the
// logic below in wxPyCallbackHelper::findCallback, hence this icky
// code to find the class where the method is actually defined...
static
PyObject* PyFindClassWithAttr(PyObject *klass, PyObject *name)
{
int i, n;
if (PyType_Check(klass)) { // new style classes
// This code is borrowed/adapted from _PyType_Lookup in typeobject.c
PyTypeObject* type = (PyTypeObject*)klass;
PyObject *mro, *res, *base, *dict;
/* Look in tp_dict of types in MRO */
mro = type->tp_mro;
assert(PyTuple_Check(mro));
n = PyTuple_GET_SIZE(mro);
for (i = 0; i < n; i++) {
base = PyTuple_GET_ITEM(mro, i);
if (PyClass_Check(base))
dict = ((PyClassObject *)base)->cl_dict;
else {
assert(PyType_Check(base));
dict = ((PyTypeObject *)base)->tp_dict;
}
assert(dict && PyDict_Check(dict));
res = PyDict_GetItem(dict, name);
if (res != NULL)
return base;
}
return NULL;
}
else if (PyClass_Check(klass)) { // old style classes
// This code is borrowed/adapted from class_lookup in classobject.c
PyClassObject* cp = (PyClassObject*)klass;
PyObject *value = PyDict_GetItem(cp->cl_dict, name);
if (value != NULL) {
return (PyObject*)cp;
}
n = PyTuple_Size(cp->cl_bases);
for (i = 0; i < n; i++) {
PyObject* base = PyTuple_GetItem(cp->cl_bases, i);
PyObject *v = PyFindClassWithAttr(base, name);
if (v != NULL)
return v;
}
return NULL;
}
return NULL;
}
#endif
static
PyObject* PyMethod_GetDefiningClass(PyObject* method, PyObject* nameo)
{
PyObject* mgc = PyMethod_GET_CLASS(method);
#if PYTHON_API_VERSION <= 1010 // prior to Python 2.2, the easy way
return mgc;
#else // 2.2 and after, the hard way...
return PyFindClassWithAttr(mgc, nameo);
#endif
}
// To avoid recursion when an overridden virtual method wants to call the base
// class version, temporarily set an attribute in the instance with the same
// name as the method. Then the PyObject_GetAttr in the next findCallback
// will return this attribute and the PyMethod_Check will fail.
void wxPyCallbackHelper::setRecursionGuard(PyObject* method) const
{
PyFunctionObject* func = (PyFunctionObject*)PyMethod_Function(method);
PyObject_SetAttr(m_self, func->func_name, Py_None);
}
void wxPyCallbackHelper::clearRecursionGuard(PyObject* method) const
{
PyFunctionObject* func = (PyFunctionObject*)PyMethod_Function(method);
if (PyObject_HasAttr(m_self, func->func_name)) {
PyObject_DelAttr(m_self, func->func_name);
}
}
// bool wxPyCallbackHelper::hasRecursionGuard(PyObject* method) const
// {
// PyFunctionObject* func = (PyFunctionObject*)PyMethod_Function(method);
// if (PyObject_HasAttr(m_self, func->func_name)) {
// PyObject* attr = PyObject_GetAttr(m_self, func->func_name);
// bool retval = (attr == Py_None);
// Py_DECREF(attr);
// return retval;
// }
// return false;
// }
bool wxPyCallbackHelper::findCallback(const char* name, bool setGuard) const {
wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const
PyObject *method, *klass;
PyObject* nameo = PyString_FromString(name);
self->m_lastFound = NULL;
// If the object (m_self) has an attibute of the given name...
if (m_self && PyObject_HasAttr(m_self, nameo)) {
method = PyObject_GetAttr(m_self, nameo);
// ...and if that attribute is a method, and if that method's class is
// not from the registered class or a base class...
if (PyMethod_Check(method) &&
(klass = PyMethod_GetDefiningClass(method, nameo)) != NULL &&
(klass != m_class) &&
PyObject_IsSubclass(klass, m_class)) {
// ...then we'll save a pointer to the method so callCallback can
// call it. But first, set a recursion guard in case the
// overridden method wants to call the base class version.
if (setGuard)
setRecursionGuard(method);
self->m_lastFound = method;
}
else {
Py_DECREF(method);
}
}
Py_DECREF(nameo);
return m_lastFound != NULL;
}
int wxPyCallbackHelper::callCallback(PyObject* argTuple) const {
PyObject* result;
int retval = false;
result = callCallbackObj(argTuple);
if (result) { // Assumes an integer return type...
retval = PyInt_AsLong(result);
Py_DECREF(result);
PyErr_Clear(); // forget about it if it's not...
}
return retval;
}
// Invoke the Python callable object, returning the raw PyObject return
// value. Caller should DECREF the return value and also manage the GIL.
PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) const {
PyObject* result;
// Save a copy of the pointer in case the callback generates another
// callback. In that case m_lastFound will have a different value when
// it gets back here...
PyObject* method = m_lastFound;
result = PyEval_CallObject(method, argTuple);
clearRecursionGuard(method);
Py_DECREF(argTuple);
Py_DECREF(method);
if (!result) {
PyErr_Print();
}
return result;
}
void wxPyCBH_setCallbackInfo(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref) {
cbh.setSelf(self, klass, incref);
}
bool wxPyCBH_findCallback(const wxPyCallbackHelper& cbh, const char* name, bool setGuard) {
return cbh.findCallback(name, setGuard);
}
int wxPyCBH_callCallback(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
return cbh.callCallback(argTuple);
}
PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
return cbh.callCallbackObj(argTuple);
}
void wxPyCBH_delete(wxPyCallbackHelper* cbh) {
if (cbh->m_incRef && Py_IsInitialized()) {
wxPyBlock_t blocked = wxPyBeginBlockThreads();
Py_XDECREF(cbh->m_self);
Py_XDECREF(cbh->m_class);
wxPyEndBlockThreads(blocked);
}
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// These event classes can be derived from in Python and passed through the event
// system without losing anything. They do this by keeping a reference to
// themselves and some special case handling in wxPyCallback::EventThunker.
wxPyEvtSelfRef::wxPyEvtSelfRef() {
//m_self = Py_None; // **** We don't do normal ref counting to prevent
//Py_INCREF(m_self); // circular loops...
m_cloned = false;
}
wxPyEvtSelfRef::~wxPyEvtSelfRef() {
wxPyBlock_t blocked = wxPyBeginBlockThreads();
if (m_cloned)
Py_DECREF(m_self);
wxPyEndBlockThreads(blocked);
}
void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
wxPyBlock_t blocked = wxPyBeginBlockThreads();
if (m_cloned)
Py_DECREF(m_self);
m_self = self;
if (clone) {
Py_INCREF(m_self);
m_cloned = true;
}
wxPyEndBlockThreads(blocked);
}
PyObject* wxPyEvtSelfRef::GetSelf() const {
Py_INCREF(m_self);
return m_self;
}
IMPLEMENT_ABSTRACT_CLASS(wxPyEvent, wxEvent);
IMPLEMENT_ABSTRACT_CLASS(wxPyCommandEvent, wxCommandEvent);
wxPyEvent::wxPyEvent(int winid, wxEventType commandType)
: wxEvent(winid, commandType) {
}
wxPyEvent::wxPyEvent(const wxPyEvent& evt)
: wxEvent(evt)
{
SetSelf(evt.m_self, true);
}
wxPyEvent::~wxPyEvent() {
}
wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
: wxCommandEvent(commandType, id) {
}
wxPyCommandEvent::wxPyCommandEvent(const wxPyCommandEvent& evt)
: wxCommandEvent(evt)
{
SetSelf(evt.m_self, true);
}
wxPyCommandEvent::~wxPyCommandEvent() {
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// Convert a wxList to a Python List, only works for lists of wxObjects
PyObject* wxPy_ConvertList(wxListBase* listbase) {
wxList* list = (wxList*)listbase; // this is probably bad...
PyObject* pyList;
PyObject* pyObj;
wxObject* wxObj;
wxNode* node = list->GetFirst();
wxPyBlock_t blocked = wxPyBeginBlockThreads();
pyList = PyList_New(0);
while (node) {
wxObj = node->GetData();
pyObj = wxPyMake_wxObject(wxObj,false);
PyList_Append(pyList, pyObj);
Py_DECREF(pyObj); // the Append also does an INCREF, that's one more than we need.
node = node->GetNext();
}
wxPyEndBlockThreads(blocked);
return pyList;
}
//----------------------------------------------------------------------
long wxPyGetWinHandle(wxWindow* win) {
#ifdef __WXMSW__
return (long)win->GetHandle();
#endif
#if defined(__WXGTK__) || defined(__WXX11)
return (long)GetXWindow(win);
#endif
#ifdef __WXMAC__
//return (long)MAC_WXHWND(win->MacGetTopLevelWindowRef());
return (long)win->GetHandle();
#endif
return 0;
}
//----------------------------------------------------------------------
// Some helper functions for typemaps in my_typemaps.i, so they won't be
// included in every file over and over again...
wxString* wxString_in_helper(PyObject* source) {
wxString* target = NULL;
if (!PyString_Check(source) && !PyUnicode_Check(source)) {
PyErr_SetString(PyExc_TypeError, "String or Unicode type required");
return NULL;
}
#if wxUSE_UNICODE
PyObject* uni = source;
if (PyString_Check(source)) {
uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
if (PyErr_Occurred()) return NULL;
}
target = new wxString();
size_t len = PyUnicode_GET_SIZE(uni);
if (len) {
PyUnicode_AsWideChar((PyUnicodeObject*)uni, target->GetWriteBuf(len), len);
target->UngetWriteBuf(len);
}
if (PyString_Check(source))
Py_DECREF(uni);
#else
// Convert to a string object if it isn't already, then to wxString
PyObject* str = source;
if (PyUnicode_Check(source)) {
str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
if (PyErr_Occurred()) return NULL;
}
else if (!PyString_Check(source)) {
str = PyObject_Str(source);
if (PyErr_Occurred()) return NULL;
}
char* tmpPtr; Py_ssize_t tmpSize;
PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
target = new wxString(tmpPtr, tmpSize);
if (!PyString_Check(source))
Py_DECREF(str);
#endif // wxUSE_UNICODE
return target;
}
// Similar to above except doesn't use "new" and doesn't set an exception
wxString Py2wxString(PyObject* source)
{
wxString target;
#if wxUSE_UNICODE
// Convert to a unicode object, if not already, then to a wxString
PyObject* uni = source;
if (!PyUnicode_Check(source)) {
uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
if (PyErr_Occurred()) return wxEmptyString; // TODO: should we PyErr_Clear?
}
size_t len = PyUnicode_GET_SIZE(uni);
if (len) {
PyUnicode_AsWideChar((PyUnicodeObject*)uni, target.GetWriteBuf(len), len);
target.UngetWriteBuf();
}
if (!PyUnicode_Check(source))
Py_DECREF(uni);
#else
// Convert to a string object if it isn't already, then to wxString
PyObject* str = source;
if (PyUnicode_Check(source)) {
str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
if (PyErr_Occurred()) return wxEmptyString; // TODO: should we PyErr_Clear?
}
else if (!PyString_Check(source)) {
str = PyObject_Str(source);
if (PyErr_Occurred()) return wxEmptyString; // TODO: should we PyErr_Clear?
}
char* tmpPtr; Py_ssize_t tmpSize;
PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
target = wxString(tmpPtr, tmpSize);
if (!PyString_Check(source))
Py_DECREF(str);
#endif // wxUSE_UNICODE
return target;
}
// Make either a Python String or Unicode object, depending on build mode
PyObject* wx2PyString(const wxString& src)
{
PyObject* str;
#if wxUSE_UNICODE
str = PyUnicode_FromWideChar(src.c_str(), src.Len());
#else
str = PyString_FromStringAndSize(src.c_str(), src.Len());
#endif
return str;
}
void wxSetDefaultPyEncoding(const char* encoding)
{
strncpy(wxPyDefaultEncoding, encoding, DEFAULTENCODING_SIZE);
}
const char* wxGetDefaultPyEncoding()
{
return wxPyDefaultEncoding;
}
//----------------------------------------------------------------------
byte* byte_LIST_helper(PyObject* source) {
if (!PyList_Check(source)) {
PyErr_SetString(PyExc_TypeError, "Expected a list object.");
return NULL;
}
int count = PyList_Size(source);
byte* temp = new byte[count];
if (! temp) {
PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
return NULL;
}
for (int x=0; x<count; x++) {
PyObject* o = PyList_GetItem(source, x);
if (! PyInt_Check(o)) {
PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
return NULL;
}
temp[x] = (byte)PyInt_AsLong(o);
}
return temp;
}
int* int_LIST_helper(PyObject* source) {
if (!PyList_Check(source)) {
PyErr_SetString(PyExc_TypeError, "Expected a list object.");
return NULL;
}
int count = PyList_Size(source);
int* temp = new int[count];
if (! temp) {
PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
return NULL;
}
for (int x=0; x<count; x++) {
PyObject* o = PyList_GetItem(source, x);
if (! PyInt_Check(o)) {
PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
return NULL;
}
temp[x] = PyInt_AsLong(o);
}
return temp;
}
long* long_LIST_helper(PyObject* source) {
if (!PyList_Check(source)) {
PyErr_SetString(PyExc_TypeError, "Expected a list object.");
return NULL;
}
int count = PyList_Size(source);
long* temp = new long[count];
if (! temp) {
PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
return NULL;
}
for (int x=0; x<count; x++) {
PyObject* o = PyList_GetItem(source, x);
if (! PyInt_Check(o)) {
PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
return NULL;
}
temp[x] = PyInt_AsLong(o);
}
return temp;
}
char** string_LIST_helper(PyObject* source) {
if (!PyList_Check(source)) {
PyErr_SetString(PyExc_TypeError, "Expected a list object.");
return NULL;
}
int count = PyList_Size(source);
char** temp = new char*[count];
if (! temp) {
PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
return NULL;
}
for (int x=0; x<count; x++) {
PyObject* o = PyList_GetItem(source, x);
if (! PyString_Check(o)) {
PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
return NULL;
}
temp[x] = PyString_AsString(o);
}
return temp;
}
//---------------------------------------------------------------------------
// NOTE: The following functions could really use some refactoring using
// templates to make things somewhat simpler...
inline bool wxPointFromObjects(PyObject* o1, PyObject* o2, wxPoint* point)
{
// get the x value
if (PyInt_Check(o1))
point->x = (int)PyInt_AS_LONG(o1);
else if (PyFloat_Check(o1))
point->x = (int)PyFloat_AS_DOUBLE(o1);
else if (PyNumber_Check(o1))
point->x = (int)PyInt_AsLong(o1);
else
return false;
// get the y value
if (PyInt_Check(o2))
point->y = (int)PyInt_AS_LONG(o2);
else if (PyFloat_Check(o2))
point->y = (int)PyFloat_AS_DOUBLE(o2);
else if (PyNumber_Check(o2))
point->y = (int)PyInt_AsLong(o2);
else
return false;
return true;
// NOTE: This function used to have this code in it, but I don't know why it
// is a problem nor what havok it will cause, so removing for now...
// if (wxPySwigInstance_Check(o1) || wxPySwigInstance_Check(o2)) {
// // Disallow instances because they can cause havok
// return false;
// }
}
inline bool wxPoint2DFromObjects(PyObject* o1, PyObject* o2, wxPoint2D* point)
{
// get the x value
if (PyInt_Check(o1))
point->m_x = (double)PyInt_AS_LONG(o1);
else if (PyFloat_Check(o1))
point->m_x = (double)PyFloat_AS_DOUBLE(o1);
else if (PyNumber_Check(o1))
point->m_x = (double)PyFloat_AsDouble(o1);
else
return false;
// get the y value
if (PyInt_Check(o2))
point->m_y = (double)PyInt_AS_LONG(o2);
else if (PyFloat_Check(o2))
point->m_y = (double)PyFloat_AS_DOUBLE(o2);
else if (PyNumber_Check(o2))
point->m_y = (double)PyFloat_AsDouble(o2);
else
return false;
return true;
}
wxPoint* wxPoint_LIST_helper(PyObject* source, int *count)
{
int idx;
wxPoint* temp;
PyObject *o, *o1, *o2;
bool isFast = PyList_Check(source) || PyTuple_Check(source);
if (!PySequence_Check(source)) {
goto error0;
}
// The length of the sequence is returned in count.
*count = PySequence_Length(source);
if (*count < 0) {
goto error0;
}
temp = new wxPoint[*count];
if (!temp) {
PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
return NULL;
}
for (idx=0; idx<*count; idx++) {
// Get an item: try fast way first.
if (isFast) {
o = PySequence_Fast_GET_ITEM(source, idx);
}
else {
o = PySequence_GetItem(source, idx);
if (o == NULL) {
goto error1;
}
}
// Convert o to wxPoint.
if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
(PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
o1 = PySequence_Fast_GET_ITEM(o, 0);
o2 = PySequence_Fast_GET_ITEM(o, 1);
if (!wxPointFromObjects(o1, o2, &temp[idx])) {
goto error2;
}
}
else if (wxPySwigInstance_Check(o)) {
wxPoint* pt;
if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint"))) {
goto error2;
}
temp[idx] = *pt;
}
else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
o1 = PySequence_GetItem(o, 0);
o2 = PySequence_GetItem(o, 1);
if (!wxPointFromObjects(o1, o2, &temp[idx])) {
goto error3;
}
Py_DECREF(o1);
Py_DECREF(o2);
}
else {
goto error2;
}
// Clean up.
if (!isFast)
Py_DECREF(o);
}
return temp;
error3:
Py_DECREF(o1);
Py_DECREF(o2);
error2:
if (!isFast)
Py_DECREF(o);
error1:
delete [] temp;
error0:
PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoints.");
return NULL;
}
wxPoint2D* wxPoint2D_LIST_helper(PyObject* source, size_t *count)
{
size_t idx;
wxPoint2D* temp;
PyObject *o, *o1, *o2;
bool isFast = PyList_Check(source) || PyTuple_Check(source);
if (!PySequence_Check(source)) {
goto error0;
}
// The length of the sequence is returned in count.
*count = PySequence_Length(source);
if (*count < 0) {
goto error0;
}
temp = new wxPoint2D[*count];
if (!temp) {
PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
return NULL;
}
for (idx=0; idx<*count; idx++) {
// Get an item: try fast way first.
if (isFast) {
o = PySequence_Fast_GET_ITEM(source, idx);
}
else {
o = PySequence_GetItem(source, idx);
if (o == NULL) {
goto error1;
}
}
// Convert o to wxPoint.
if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
(PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
o1 = PySequence_Fast_GET_ITEM(o, 0);
o2 = PySequence_Fast_GET_ITEM(o, 1);
if (!wxPoint2DFromObjects(o1, o2, &temp[idx])) {
goto error2;
}
}
else if (wxPySwigInstance_Check(o)) {
wxPoint2D* pt;
if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint2D"))) {
goto error2;
}
temp[idx] = *pt;
}
else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
o1 = PySequence_GetItem(o, 0);
o2 = PySequence_GetItem(o, 1);
if (!wxPoint2DFromObjects(o1, o2, &temp[idx])) {
goto error3;
}
Py_DECREF(o1);
Py_DECREF(o2);
}
else {
goto error2;
}
// Clean up.
if (!isFast)
Py_DECREF(o);
}
return temp;
error3:
Py_DECREF(o1);
Py_DECREF(o2);
error2:
if (!isFast)
Py_DECREF(o);
error1:
delete [] temp;
error0:
PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoint2Ds.");
return NULL;
}
//---------------------------------------------------------------------------
wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
if (!PyList_Check(source)) {
PyErr_SetString(PyExc_TypeError, "Expected a list object.");
return NULL;
}
int count = PyList_Size(source);
wxBitmap** temp = new wxBitmap*[count];
if (! temp) {
PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
return NULL;
}
for (int x=0; x<count; x++) {
PyObject* o = PyList_GetItem(source, x);
if (wxPySwigInstance_Check(o)) {
wxBitmap* pt;
if (! wxPyConvertSwigPtr(o, (void **) &pt, wxT("wxBitmap"))) {
PyErr_SetString(PyExc_TypeError,"Expected wxBitmap.");
return NULL;
}
temp[x] = pt;
}
else {
PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
return NULL;
}
}
return temp;
}
wxString* wxString_LIST_helper(PyObject* source) {
if (!PyList_Check(source)) {
PyErr_SetString(PyExc_TypeError, "Expected a list object.");
return NULL;
}
int count = PyList_Size(source);
wxString* temp = new wxString[count];
if (! temp) {
PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
return NULL;
}
for (int x=0; x<count; x++) {
PyObject* o = PyList_GetItem(source, x);
#if PYTHON_API_VERSION >= 1009
if (! PyString_Check(o) && ! PyUnicode_Check(o)) {
PyErr_SetString(PyExc_TypeError, "Expected a list of string or unicode objects.");
return NULL;
}
#else
if (! PyString_Check(o)) {
PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
return NULL;
}
#endif
wxString* pStr = wxString_in_helper(o);
temp[x] = *pStr;
delete pStr;
}
return temp;
}
wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
if (!PyList_Check(source)) {
PyErr_SetString(PyExc_TypeError, "Expected a list object.");
return NULL;
}
int count = PyList_Size(source);
wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
if (! temp) {
PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
return NULL;
}
for (int x=0; x<count; x++) {
PyObject* o = PyList_GetItem(source, x);
if (wxPySwigInstance_Check(o)) {
wxAcceleratorEntry* ae;
if (! wxPyConvertSwigPtr(o, (void **) &ae, wxT("wxAcceleratorEntry"))) {
PyErr_SetString(PyExc_TypeError,"Expected wxAcceleratorEntry.");
return NULL;
}
temp[x] = *ae;
}
else if (PyTuple_Check(o)) {
PyObject* o1 = PyTuple_GetItem(o, 0);
PyObject* o2 = PyTuple_GetItem(o, 1);
PyObject* o3 = PyTuple_GetItem(o, 2);
temp[x].Set(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
}
else {
PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
return NULL;
}
}
return temp;
}
wxPen** wxPen_LIST_helper(PyObject* source) {
if (!PyList_Check(source)) {
PyErr_SetString(PyExc_TypeError, "Expected a list object.");
return NULL;
}
int count = PyList_Size(source);
wxPen** temp = new wxPen*[count];
if (!temp) {
PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
return NULL;
}
for (int x=0; x<count; x++) {
PyObject* o = PyList_GetItem(source, x);
if (wxPySwigInstance_Check(o)) {
wxPen* pt;
if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPen"))) {
delete temp;
PyErr_SetString(PyExc_TypeError,"Expected wxPen.");
return NULL;
}
temp[x] = pt;
}
else {
delete temp;
PyErr_SetString(PyExc_TypeError, "Expected a list of wxPens.");
return NULL;
}
}
return temp;
}
bool wxPy2int_seq_helper(PyObject* source, int* i1, int* i2) {
bool isFast = PyList_Check(source) || PyTuple_Check(source);
PyObject *o1, *o2;
if (!PySequence_Check(source) || PySequence_Length(source) != 2)
return false;
if (isFast) {
o1 = PySequence_Fast_GET_ITEM(source, 0);
o2 = PySequence_Fast_GET_ITEM(source, 1);
}
else {
o1 = PySequence_GetItem(source, 0);
o2 = PySequence_GetItem(source, 1);
}
*i1 = PyInt_AsLong(o1);
*i2 = PyInt_AsLong(o2);
if (! isFast) {
Py_DECREF(o1);
Py_DECREF(o2);
}
return true;
}
bool wxPy4int_seq_helper(PyObject* source, int* i1, int* i2, int* i3, int* i4) {
bool isFast = PyList_Check(source) || PyTuple_Check(source);
PyObject *o1, *o2, *o3, *o4;
if (!PySequence_Check(source) || PySequence_Length(source) != 4)
return false;
if (isFast) {
o1 = PySequence_Fast_GET_ITEM(source, 0);
o2 = PySequence_Fast_GET_ITEM(source, 1);
o3 = PySequence_Fast_GET_ITEM(source, 2);
o4 = PySequence_Fast_GET_ITEM(source, 3);
}
else {
o1 = PySequence_GetItem(source, 0);
o2 = PySequence_GetItem(source, 1);
o3 = PySequence_GetItem(source, 2);
o4 = PySequence_GetItem(source, 3);
}
*i1 = PyInt_AsLong(o1);
*i2 = PyInt_AsLong(o2);
*i3 = PyInt_AsLong(o3);
*i4 = PyInt_AsLong(o4);
if (! isFast) {
Py_DECREF(o1);
Py_DECREF(o2);
Py_DECREF(o3);
Py_DECREF(o4);
}
return true;
}
//----------------------------------------------------------------------
bool wxPySimple_typecheck(PyObject* source, const wxChar* classname, int seqLen)
{
void* ptr;
if (wxPySwigInstance_Check(source) &&
wxPyConvertSwigPtr(source, (void **)&ptr, classname))
return true;
PyErr_Clear();
if (PySequence_Check(source) && PySequence_Length(source) == seqLen)
return true;
return false;
}
bool wxSize_helper(PyObject* source, wxSize** obj)
{
if (source == Py_None) {
**obj = wxSize(-1,-1);
return true;
}
return wxPyTwoIntItem_helper(source, obj, wxT("wxSize"));
}
bool wxPoint_helper(PyObject* source, wxPoint** obj)
{
if (source == Py_None) {
**obj = wxPoint(-1,-1);
return true;
}
return wxPyTwoIntItem_helper(source, obj, wxT("wxPoint"));
}
bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
if (source == Py_None) {
**obj = wxRealPoint(-1,-1);
return true;
}
// If source is an object instance then it may already be the right type
if (wxPySwigInstance_Check(source)) {
wxRealPoint* ptr;
if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRealPoint")))
goto error;
*obj = ptr;
return true;
}
// otherwise a 2-tuple of floats is expected
else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
PyObject* o1 = PySequence_GetItem(source, 0);
PyObject* o2 = PySequence_GetItem(source, 1);
if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
Py_DECREF(o1);
Py_DECREF(o2);
goto error;
}
**obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
Py_DECREF(o1);
Py_DECREF(o2);
return true;
}
error:
PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
return false;
}
bool wxRect_helper(PyObject* source, wxRect** obj) {
if (source == Py_None) {
**obj = wxRect(-1,-1,-1,-1);
return true;
}
// If source is an object instance then it may already be the right type
if (wxPySwigInstance_Check(source)) {
wxRect* ptr;
if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRect")))
goto error;
*obj = ptr;
return true;
}
// otherwise a 4-tuple of integers is expected
else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
PyObject* o1 = PySequence_GetItem(source, 0);
PyObject* o2 = PySequence_GetItem(source, 1);
PyObject* o3 = PySequence_GetItem(source, 2);
PyObject* o4 = PySequence_GetItem(source, 3);
if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
!PyNumber_Check(o3) || !PyNumber_Check(o4)) {
Py_DECREF(o1);
Py_DECREF(o2);
Py_DECREF(o3);
Py_DECREF(o4);
goto error;
}
**obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
PyInt_AsLong(o3), PyInt_AsLong(o4));
Py_DECREF(o1);
Py_DECREF(o2);
Py_DECREF(o3);
Py_DECREF(o4);
return true;
}
error:
PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
return false;
}
bool wxColour_helper(PyObject* source, wxColour** obj) {
if (source == Py_None) {
**obj = wxNullColour;
return true;
}
// If source is an object instance then it may already be the right type
if (wxPySwigInstance_Check(source)) {
wxColour* ptr;
if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxColour")))
goto error;
*obj = ptr;
return true;
}
// otherwise check for a string
else if (PyString_Check(source) || PyUnicode_Check(source)) {
wxString spec = Py2wxString(source);
if (spec.GetChar(0) == '#' && spec.Length() == 7) { // It's #RRGGBB
long red, green, blue;
red = green = blue = 0;
spec.Mid(1,2).ToLong(&red, 16);
spec.Mid(3,2).ToLong(&green, 16);
spec.Mid(5,2).ToLong(&blue, 16);
**obj = wxColour(red, green, blue);
return true;
}
else { // it's a colour name
**obj = wxColour(spec);
return true;
}
}
// last chance: 3-tuple or 4-tuple of integers is expected
else if (PySequence_Check(source) && PyObject_Length(source) == 3) {
PyObject* o1 = PySequence_GetItem(source, 0);
PyObject* o2 = PySequence_GetItem(source, 1);
PyObject* o3 = PySequence_GetItem(source, 2);
if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3)) {
Py_DECREF(o1);
Py_DECREF(o2);
Py_DECREF(o3);
goto error;
}
**obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
Py_DECREF(o1);
Py_DECREF(o2);
Py_DECREF(o3);
return true;
}
else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
PyObject* o1 = PySequence_GetItem(source, 0);
PyObject* o2 = PySequence_GetItem(source, 1);
PyObject* o3 = PySequence_GetItem(source, 2);
PyObject* o4 = PySequence_GetItem(source, 3);
if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
Py_DECREF(o1);
Py_DECREF(o2);
Py_DECREF(o3);
Py_DECREF(o4);
goto error;
}
**obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3), PyInt_AsLong(o4));
Py_DECREF(o1);
Py_DECREF(o2);
Py_DECREF(o3);
Py_DECREF(o4);
return true;
}
error:
PyErr_SetString(PyExc_TypeError,
"Expected a wxColour object, a string containing a colour name or '#RRGGBB', or a 3- or 4-tuple of integers.");
return false;
}
bool wxColour_typecheck(PyObject* source) {
if (wxPySimple_typecheck(source, wxT("wxColour"), 3))
return true;
if (PyString_Check(source) || PyUnicode_Check(source))
return true;
return false;
}
bool wxPoint2D_helper(PyObject* source, wxPoint2D** obj) {
if (source == Py_None) {
**obj = wxPoint2D(-1,-1);
return true;
}
// If source is an object instance then it may already be the right type
if (wxPySwigInstance_Check(source)) {
wxPoint2D* ptr;
if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxPoint2D")))
goto error;
*obj = ptr;
return true;
}
// otherwise a length-2 sequence of floats is expected
if (PySequence_Check(source) && PySequence_Length(source) == 2) {
PyObject* o1 = PySequence_GetItem(source, 0);
PyObject* o2 = PySequence_GetItem(source, 1);
// This should really check for floats, not numbers -- but that would break code.
if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
Py_DECREF(o1);
Py_DECREF(o2);
goto error;
}
**obj = wxPoint2D(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
Py_DECREF(o1);
Py_DECREF(o2);
return true;
}
error:
PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wx.Point2D object.");
return false;
}
bool wxRect2D_helper(PyObject* source, wxRect2D** obj) {
if (source == Py_None) {
**obj = wxRect2D(-1,-1,-1,-1);
return true;
}
// If source is an object instance then it may already be the right type
if (wxPySwigInstance_Check(source)) {
wxRect2D* ptr;
if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRect2D")))
goto error;
*obj = ptr;
return true;
}
// otherwise a length-4 sequence of floats is expected
if (PySequence_Check(source) && PySequence_Length(source) == 4) {
PyObject* o1 = PySequence_GetItem(source, 0);
PyObject* o2 = PySequence_GetItem(source, 1);
PyObject* o3 = PySequence_GetItem(source, 2);
PyObject* o4 = PySequence_GetItem(source, 3);
// This should really check for floats, not numbers -- but that would break code.
if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
!PyNumber_Check(o3) || !PyNumber_Check(o4)) {
Py_DECREF(o1);
Py_DECREF(o2);
Py_DECREF(o3);
Py_DECREF(o4);
goto error;
}
**obj = wxRect2D(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2),
PyFloat_AsDouble(o3), PyFloat_AsDouble(o4));
Py_DECREF(o1);
Py_DECREF(o2);
Py_DECREF(o3);
Py_DECREF(o4);
return true;
}
error:
PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of floats or a wx.Rect2D object.");
return false;
}
//----------------------------------------------------------------------
PyObject* wxArrayString2PyList_helper(const wxArrayString& arr)
{
PyObject* list = PyList_New(0);
for (size_t i=0; i < arr.GetCount(); i++) {
#if wxUSE_UNICODE
PyObject* str = PyUnicode_FromWideChar(arr[i].c_str(), arr[i].Len());
#else
PyObject* str = PyString_FromStringAndSize(arr[i].c_str(), arr[i].Len());
#endif
PyList_Append(list, str);
Py_DECREF(str);
}
return list;
}
PyObject* wxArrayInt2PyList_helper(const wxArrayInt& arr)
{
PyObject* list = PyList_New(0);
for (size_t i=0; i < arr.GetCount(); i++) {
PyObject* number = PyInt_FromLong(arr[i]);
PyList_Append(list, number);
Py_DECREF(number);
}
return list;
}
PyObject* wxArrayDouble2PyList_helper(const wxArrayDouble& arr)
{
PyObject* list = PyList_New(0);
for (size_t i=0; i < arr.GetCount(); i++) {
PyObject* number = PyFloat_FromDouble(arr[i]);
PyList_Append(list, number);
Py_DECREF(number);
}
return list;
}
//----------------------------------------------------------------------
// wxPyImageHandler methods
//
// TODO: Switch these to use wxPython's standard macros and helper classes
// for calling callbacks.
PyObject* wxPyImageHandler::m_DoCanRead_Name = NULL;
PyObject* wxPyImageHandler::m_GetImageCount_Name = NULL;
PyObject* wxPyImageHandler::m_LoadFile_Name = NULL;
PyObject* wxPyImageHandler::m_SaveFile_Name = NULL;
PyObject* wxPyImageHandler::py_InputStream(wxInputStream* stream) {
return wxPyConstructObject(new wxPyInputStream(stream),
wxT("wxPyInputStream"), 0);
}
PyObject* wxPyImageHandler::py_Image(wxImage* image) {
return wxPyConstructObject(image, wxT("wxImage"), 0);
}
PyObject* wxPyImageHandler::py_OutputStream(wxOutputStream* stream) {
return wxPyConstructObject(stream, wxT("wxOutputStream"), 0);
}
wxPyImageHandler::wxPyImageHandler():
m_self(NULL)
{
if (!m_DoCanRead_Name) {
m_DoCanRead_Name = PyString_FromString("DoCanRead");
m_GetImageCount_Name = PyString_FromString("GetImageCount");
m_LoadFile_Name = PyString_FromString("LoadFile");
m_SaveFile_Name = PyString_FromString("SaveFile");
}
}
wxPyImageHandler::~wxPyImageHandler() {
if (m_self) {
Py_DECREF(m_self);
m_self = NULL;
}
}
void wxPyImageHandler::_SetSelf(PyObject *self) {
// should check here for isinstance(PyImageHandler) ??
m_self = self;
Py_INCREF(m_self);
}
bool wxPyImageHandler::DoCanRead(wxInputStream& stream) {
// check if our object has this method
wxPyBlock_t blocked = wxPyBeginBlockThreads();
if (!m_self || !PyObject_HasAttr(m_self, m_DoCanRead_Name)) {
wxPyEndBlockThreads(blocked);
return false;
}
PyObject* res = PyObject_CallMethodObjArgs(m_self, m_DoCanRead_Name,
py_InputStream(&stream), NULL);
bool retval = false;
if (res) {
retval = PyInt_AsLong(res);
Py_DECREF(res);
PyErr_Clear();
}
else
PyErr_Print();
wxPyEndBlockThreads(blocked);
return retval;
}
bool wxPyImageHandler::LoadFile( wxImage* image, wxInputStream& stream,
bool verbose, int index ) {
// check if our object has this method
wxPyBlock_t blocked = wxPyBeginBlockThreads();
if (!m_self || !PyObject_HasAttr(m_self, m_LoadFile_Name)) {
wxPyEndBlockThreads(blocked);
return false;
}
PyObject* res = PyObject_CallMethodObjArgs(m_self, m_LoadFile_Name,
py_Image(image),
py_InputStream(&stream),
PyInt_FromLong(verbose),
PyInt_FromLong(index),
NULL);
bool retval = false;
if (res) {
retval = PyInt_AsLong(res);
Py_DECREF(res);
PyErr_Clear();
} else
PyErr_Print();
wxPyEndBlockThreads(blocked);
return retval;
}
bool wxPyImageHandler::SaveFile( wxImage* image, wxOutputStream& stream,
bool verbose ) {
wxPyBlock_t blocked = wxPyBeginBlockThreads();
if (!m_self || !PyObject_HasAttr(m_self, m_SaveFile_Name)) {
wxPyEndBlockThreads(blocked);
return false;
}
PyObject* res = PyObject_CallMethodObjArgs(m_self, m_SaveFile_Name,
py_Image(image),
py_OutputStream(&stream),
PyInt_FromLong(verbose),
NULL);
bool retval = false;
if(res) {
retval=PyInt_AsLong(res);
Py_DECREF(res);
PyErr_Clear();
} else
PyErr_Print();
wxPyEndBlockThreads(blocked);
return retval;
}
int wxPyImageHandler::GetImageCount( wxInputStream& stream ) {
wxPyBlock_t blocked = wxPyBeginBlockThreads();
if (!m_self || !PyObject_HasAttr(m_self, m_GetImageCount_Name)) {
wxPyEndBlockThreads(blocked);
return 1;
}
PyObject *res=PyObject_CallMethodObjArgs(m_self, m_GetImageCount_Name,
py_InputStream(&stream),
NULL);
int retval = 1;
if(res) {
retval=PyInt_AsLong(res);
Py_DECREF(res);
PyErr_Clear();
} else
PyErr_Print();
wxPyEndBlockThreads(blocked);
return retval;
}
//----------------------------------------------------------------------
// Function to test if the Display (or whatever is the platform equivallent)
// can be connected to. This is accessable from wxPython as a staticmethod of
// wx.App called DisplayAvailable().
bool wxPyTestDisplayAvailable()
{
#ifdef __WXGTK__
Display* display;
display = XOpenDisplay(NULL);
if (display == NULL)
return false;
XCloseDisplay(display);
return true;
#endif
#ifdef __WXMAC__
// This is adapted from Python's Mac/Modules/MacOS.c in the
// MacOS_WMAvailable function.
bool rv;
ProcessSerialNumber psn;
/*
** This is a fairly innocuous call to make if we don't have a window
** manager, or if we have no permission to talk to it. It will print
** a message on stderr, but at least it won't abort the process.
** It appears the function caches the result itself, and it's cheap, so
** no need for us to cache.
*/
#ifdef kCGNullDirectDisplay
/* On 10.1 CGMainDisplayID() isn't available, and
** kCGNullDirectDisplay isn't defined.
*/
if (CGMainDisplayID() == 0) {
rv = false;
} else
#endif
{
// Also foreground the application on the first call as a side-effect.
if (GetCurrentProcess(&psn) < 0 || SetFrontProcess(&psn) < 0) {
rv = false;
} else {
rv = true;
}
}
return rv;
#endif
#ifdef __WXMSW__
// TODO...
return true;
#endif
}
//----------------------------------------------------------------------
//----------------------------------------------------------------------
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