fixed interpretation of <font size>: was always relative to current size, now conform...

[wxWidgets.git] / utils / wxPython / src / helpers.cpp

diff --git a/utils/wxPython/src/helpers.cpp b/utils/wxPython/src/helpers.cpp
index 09ead8df34b2b7922717571f797d566d67847519..863718df74b5f4e05f7267957678da20b8ec9b1a 100644 (file)
--- a/utils/wxPython/src/helpers.cpp
+++ b/utils/wxPython/src/helpers.cpp
@@ -10,14 +10,12 @@
 // Licence:     wxWindows license
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows license
 /////////////////////////////////////////////////////////////////////////////
 

-
-#ifdef __WXGTK__
-#include <gtk/gtk.h>
-#endif
+#include <stdio.h>  // get the correct definition of NULL

 
 #undef DEBUG
 #include <Python.h>
 #include "helpers.h"
 
 #undef DEBUG
 #include <Python.h>
 #include "helpers.h"

+

 #ifdef __WXMSW__
 #include <wx/msw/private.h>
 #undef FindWindow
 #ifdef __WXMSW__
 #include <wx/msw/private.h>
 #undef FindWindow


@@ -26,7 +24,10 @@
 #undef GetClassInfo
 #undef GetClassName
 #endif
 #undef GetClassInfo
 #undef GetClassName
 #endif

-#include <wx/module.h>
+
+#ifdef __WXGTK__
+#include <gtk/gtk.h>
+#endif

 
 
 //---------------------------------------------------------------------------
 
 
 //---------------------------------------------------------------------------


@@ -74,7 +75,7 @@ wxPyApp::~wxPyApp() {
 
 // This one isn't acutally called...  See __wxStart()
 bool wxPyApp::OnInit(void) {
 
 // This one isn't acutally called...  See __wxStart()
 bool wxPyApp::OnInit(void) {

-    return false;
+    return FALSE;

 }
 
 int  wxPyApp::MainLoop(void) {
 }
 
 int  wxPyApp::MainLoop(void) {


@@ -259,7 +260,7 @@ PyObject* __wxSetDictionary(PyObject* /* self */, PyObject* args)
 
 //---------------------------------------------------------------------------
 
 
 //---------------------------------------------------------------------------
 

-PyObject* wxPyConstructObject(void* ptr, char* className) {
+PyObject* wxPyConstructObject(void* ptr, const char* className) {

     char    buff[64];               // should always be big enough...
     char    swigptr[64];
 
     char    buff[64];               // should always be big enough...
     char    swigptr[64];
 


@@ -282,37 +283,31 @@ PyObject* wxPyConstructObject(void* ptr, char* className) {
 
 //---------------------------------------------------------------------------
 
 
 //---------------------------------------------------------------------------
 

-//static bool _wxPyInEvent = false;
-//static unsigned int _wxPyNestCount = 0;
+static unsigned int _wxPyNestCount = 0;
+
+static PyThreadState* myPyThreadState_Get() {
+    PyThreadState* current;
+    current = PyThreadState_Swap(NULL);
+    PyThreadState_Swap(current);
+    return current;
+}

 
 

-HELPEREXPORT bool wxPyRestoreThread() {
-//  #ifdef WXP_WITH_THREAD
-//      //if (wxPyEventThreadState != PyThreadState_Get()) {
-//      if (! _wxPyInEvent) {
-//          PyEval_RestoreThread(wxPyEventThreadState);
-//          _wxPyInEvent = true;
-//          return TRUE;
-//      } else
-//  #endif
-//          return FALSE;

 
 

+HELPEREXPORT bool wxPyRestoreThread() {

     // NOTE: The Python API docs state that if a thread already has the
     // interpreter lock and calls PyEval_RestoreThread again a deadlock
     // NOTE: The Python API docs state that if a thread already has the
     // interpreter lock and calls PyEval_RestoreThread again a deadlock

-    // occurs, so I put in the above code as a guard condition since there are
-    // many possibilites for nested events and callbacks in wxPython.
+    // occurs, so I put in this code as a guard condition since there are
+    // many possibilites for nested events and callbacks in wxPython.  If
+    // The current thread is our thread, then we can assume that we
+    // already have the lock.  (I hope!)

     //
     //

-    // Unfortunately, it seems like somebody was lying (or I'm not
-    // understanding...) because each of the nested calls to this function
-    // MUST call PyEval_RestoreThread or Python pukes with a thread error (at
-    // least on Win32.)
-    //
-    // until I know better, this is how I am doing it instead:

 #ifdef WXP_WITH_THREAD
 #ifdef WXP_WITH_THREAD

-    PyEval_RestoreThread(wxPyEventThreadState);
-//    _wxPyNestCount += 1;
-//    if (_wxPyNestCount == 1)
-//        return TRUE;
-//    else
+    _wxPyNestCount += 1;
+    if (wxPyEventThreadState != myPyThreadState_Get()) {
+        PyEval_RestoreThread(wxPyEventThreadState);
+        return TRUE;
+    }
+    else

 #endif
         return FALSE;
 }
 #endif
         return FALSE;
 }


@@ -320,11 +315,10 @@ HELPEREXPORT bool wxPyRestoreThread() {
 
 HELPEREXPORT void wxPySaveThread(bool doSave) {
 #ifdef WXP_WITH_THREAD
 
 HELPEREXPORT void wxPySaveThread(bool doSave) {
 #ifdef WXP_WITH_THREAD

-//    if (doSave) {
+    if (doSave) {

         wxPyEventThreadState = PyEval_SaveThread();
         wxPyEventThreadState = PyEval_SaveThread();

-//        _wxPyInEvent = false;
-//    }
-//    _wxPyNestCount -= 1;
+    }
+    _wxPyNestCount -= 1;

 #endif
 }
 
 #endif
 }
 


@@ -351,7 +345,6 @@ wxPyCallback::~wxPyCallback() {
 
 
 
 
 
 

-

 // This function is used for all events destined for Python event handlers.
 void wxPyCallback::EventThunker(wxEvent& event) {
     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;
 // This function is used for all events destined for Python event handlers.
 void wxPyCallback::EventThunker(wxEvent& event) {
     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;


@@ -362,7 +355,14 @@ void wxPyCallback::EventThunker(wxEvent& event) {
 
 
     bool doSave = wxPyRestoreThread();
 
 
     bool doSave = wxPyRestoreThread();

-    arg = wxPyConstructObject((void*)&event, event.GetClassInfo()->GetClassName());
+    wxString className = event.GetClassInfo()->GetClassName();
+
+    if (className == "wxPyEvent")
+        arg = ((wxPyEvent*)&event)->GetSelf();
+    else if (className == "wxPyCommandEvent")
+        arg = ((wxPyCommandEvent*)&event)->GetSelf();
+    else
+        arg = wxPyConstructObject((void*)&event, className);

 
     tuple = PyTuple_New(1);
     PyTuple_SET_ITEM(tuple, 0, arg);
 
     tuple = PyTuple_New(1);
     PyTuple_SET_ITEM(tuple, 0, arg);


@@ -383,12 +383,14 @@ void wxPyCallback::EventThunker(wxEvent& event) {
 wxPyCallbackHelper::wxPyCallbackHelper() {
     m_self = NULL;
     m_lastFound = NULL;
 wxPyCallbackHelper::wxPyCallbackHelper() {
     m_self = NULL;
     m_lastFound = NULL;

+    m_incRef = FALSE;

 }
 
 
 wxPyCallbackHelper::~wxPyCallbackHelper() {
     bool doSave = wxPyRestoreThread();
 }
 
 
 wxPyCallbackHelper::~wxPyCallbackHelper() {
     bool doSave = wxPyRestoreThread();

-    Py_XDECREF(m_self);
+    if (m_incRef)
+        Py_XDECREF(m_self);

     wxPySaveThread(doSave);
 }
 
     wxPySaveThread(doSave);
 }
 


@@ -402,6 +404,7 @@ wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
 
 void wxPyCallbackHelper::setSelf(PyObject* self, int incref) {
     m_self = self;
 
 void wxPyCallbackHelper::setSelf(PyObject* self, int incref) {
     m_self = self;

+    m_incRef = incref;

     if (incref)
         Py_INCREF(m_self);
 }
     if (incref)
         Py_INCREF(m_self);
 }


@@ -444,6 +447,78 @@ PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) {
 
 
 
 
 
 

+//---------------------------------------------------------------------------
+//---------------------------------------------------------------------------
+// These classes can be derived from in Python and passed through the event
+// system without loosing 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() {
+    bool doSave = wxPyRestoreThread();
+    if (m_cloned)
+        Py_DECREF(m_self);
+    wxPySaveThread(doSave);
+}
+
+void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
+    bool doSave = wxPyRestoreThread();
+    if (m_cloned)
+        Py_DECREF(m_self);
+    m_self = self;
+    if (clone) {
+        Py_INCREF(m_self);
+        m_cloned = TRUE;
+    }
+    wxPySaveThread(doSave);
+}
+
+PyObject* wxPyEvtSelfRef::GetSelf() const {
+    Py_INCREF(m_self);
+    return m_self;
+}
+
+
+wxPyEvent::wxPyEvent(int id)
+    : wxEvent(id) {
+}
+
+wxPyEvent::~wxPyEvent() {
+}
+
+// This one is so the event object can be Cloned...
+void wxPyEvent::CopyObject(wxObject& dest) const {
+    wxEvent::CopyObject(dest);
+    ((wxPyEvent*)&dest)->SetSelf(m_self, TRUE);
+}
+
+
+IMPLEMENT_DYNAMIC_CLASS(wxPyEvent, wxEvent);
+
+
+wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
+    : wxCommandEvent(commandType, id) {
+}
+
+wxPyCommandEvent::~wxPyCommandEvent() {
+}
+
+void wxPyCommandEvent::CopyObject(wxObject& dest) const {
+    wxCommandEvent::CopyObject(dest);
+    ((wxPyCommandEvent*)&dest)->SetSelf(m_self, TRUE);
+}
+
+
+IMPLEMENT_DYNAMIC_CLASS(wxPyCommandEvent, wxCommandEvent);
+
+
+

 //---------------------------------------------------------------------------
 //---------------------------------------------------------------------------
 
 //---------------------------------------------------------------------------
 //---------------------------------------------------------------------------
 


@@ -482,7 +557,7 @@ void wxPyTimer::Notify() {
 //---------------------------------------------------------------------------
 // Convert a wxList to a Python List
 
 //---------------------------------------------------------------------------
 // Convert a wxList to a Python List
 

-PyObject* wxPy_ConvertList(wxListBase* list, char* className) {
+PyObject* wxPy_ConvertList(wxListBase* list, const char* className) {

     PyObject*   pyList;
     PyObject*   pyObj;
     wxObject*   wxObj;
     PyObject*   pyList;
     PyObject*   pyObj;
     wxObject*   wxObj;