Move pcbnew swig

Separates the python scripts into those using swig and those needed for
other scripting

pcbnew/python/scripting/pcb_scripting_tool.cpp

@@ -0,0 +1,155 @@
+/*
+ * This program source code file is part of KiCad, a free EDA CAD application.
+ *
+ * Copyright (C) 2021 KiCad Developers, see CHANGELOG.TXT for contributors.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 3
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, you may find one here:
+ * http://www.gnu.org/licenses/gpl-3.0.html
+ * or you may search the http://www.gnu.org website for the version 3 license,
+ * or you may write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ */
+
+#include "pcb_scripting_tool.h"
+
+#include <action_plugin.h>
+#include <gestfich.h>
+#include <kiface_ids.h>
+#include <kiway.h>
+#include <python_scripting.h>
+#include <tools/pcb_actions.h>
+
+#include <pybind11/eval.h>
+
+#include <Python.h>
+#include <wx/string.h>
+
+using initfunc = PyObject* (*)(void);
+
+SCRIPTING_TOOL::SCRIPTING_TOOL() :
+        PCB_TOOL_BASE( "pcbnew.ScriptingTool" )
+{}
+
+
+SCRIPTING_TOOL::~SCRIPTING_TOOL()
+{}
+
+
+void SCRIPTING_TOOL::Reset( RESET_REASON aReason )
+{
+}
+
+
+bool SCRIPTING_TOOL::Init()
+{
+    PyLOCK    lock;
+    PyObject* mod_name = PyUnicode_FromString( "_pcbnew" );
+
+    if( PyObject* existing_mod = PyImport_GetModule( mod_name ) )
+    {
+        Py_DecRef( existing_mod );
+    }
+    else
+    {
+        KIFACE* kiface = frame()->Kiway().KiFACE( KIWAY::FACE_PCB );
+        initfunc pcbnew_init = reinterpret_cast<initfunc>( kiface->IfaceOrAddress( KIFACE_SCRIPTING_LEGACY ) );
+        PyImport_AddModule( "_pcbnew" );
+        PyObject* mod = pcbnew_init();
+        PyObject* sys_mod = PyImport_GetModuleDict();
+        PyDict_SetItemString( sys_mod, "_pcbnew", mod );
+        Py_DECREF( mod );
+    }
+
+    Py_DecRef( mod_name );
+
+    // Load pcbnew inside Python and load all the user plugins and package-based plugins
+    {
+        using namespace pybind11::literals;
+
+        auto locals = pybind11::dict( "sys_path"_a = TO_UTF8( SCRIPTING::PyScriptingPath( false ) ),
+                                      "user_path"_a = TO_UTF8( SCRIPTING::PyScriptingPath( true ) ) );
+
+        pybind11::exec( R"(
+import sys
+import pcbnew
+pcbnew.LoadPlugins( sys_path, user_path )
+        )", pybind11::globals(), locals );
+
+    }
+
+    return true;
+}
+
+
+int SCRIPTING_TOOL::reloadPlugins( const TOOL_EVENT& aEvent )
+{
+    if( !m_isFootprintEditor )
+        // Reload Python plugins if they are newer than the already loaded, and load new plugins
+        // Remove all action plugins so that we don't keep references to old versions
+        ACTION_PLUGINS::UnloadAll();
+
+    {
+        PyLOCK      lock;
+
+        using namespace pybind11::literals;
+        auto locals = pybind11::dict( "sys_path"_a = SCRIPTING::PyScriptingPath( false ),
+                                      "user_path"_a = SCRIPTING::PyScriptingPath( true ) );
+
+        pybind11::exec( R"(
+import sys
+import pcbnew
+pcbnew.LoadPlugins( sys_path, user_path )
+       )", pybind11::globals(), locals );
+    }
+
+    if( !m_isFootprintEditor )
+    {
+        // Action plugins can be modified, therefore the plugins menu must be updated:
+        frame()->ReCreateMenuBar();
+        // Recreate top toolbar to add action plugin buttons
+        frame()->ReCreateHToolbar();
+    }
+
+    return 0;
+}
+
+
+int SCRIPTING_TOOL::showPluginFolder( const TOOL_EVENT& aEvent )
+{
+#ifdef __WXMAC__
+    wxString msg;
+
+    // Quote in case there are spaces in the path.
+    msg.Printf( "open \"%s\"", SCRIPTING::PyPluginsPath( true ) );
+
+    system( msg.c_str() );
+#else
+    wxString pypath( SCRIPTING::PyPluginsPath( true ) );
+
+    // Quote in case there are spaces in the path.
+    AddDelimiterString( pypath );
+
+    wxLaunchDefaultApplication( pypath );
+#endif
+
+    return 0;
+}
+
+
+void SCRIPTING_TOOL::setTransitions()
+{
+
+    Go( &SCRIPTING_TOOL::reloadPlugins,     PCB_ACTIONS::pluginsReload.MakeEvent() );
+    Go( &SCRIPTING_TOOL::showPluginFolder,  PCB_ACTIONS::pluginsShowFolder.MakeEvent() );
+}