Added wxDllWidget from Vaclav Slavik which allows wx widgets derived

from wxWindow to be loaded from a C++ .dll (or .so) and be used in a wxPython program, without the widget having to be SWIGged first. Various updates for distribs git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@12890 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2001-12-06 19:59:37 +00:00
parent d30f093006
commit 4a61305d36
14 changed files with 1218 additions and 5 deletions
--- a/wxPython/contrib/dllwidget/dllwidget.cpp
+++ b/wxPython/contrib/dllwidget/dllwidget.cpp
@@ -0,0 +1,128 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        dllwidget.cpp
+// Purpose:     Dynamically loadable C++ widget for wxPython
+// Author:      Vaclav Slavik
+// Created:     2001/12/03
+// RCS-ID:      $Id$
+// Copyright:   (c) 2001 Vaclav Slavik
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifdef __GNUG__
+#pragma implementation "dllwidget.h"
+#endif
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+    #pragma hdrstop
+#endif
+
+#include "wx/defs.h"
+#include "wx/dynlib.h"
+#include "wx/sizer.h"
+
+#include "dllwidget.h"
+
+
+IMPLEMENT_ABSTRACT_CLASS(wxDllWidget, wxPanel)
+
+wxDllWidget::wxDllWidget(wxWindow *parent,
+                         wxWindowID id,
+                         const wxString& dllName, const wxString& className,
+                         const wxPoint& pos, const wxSize& size,
+                         long style)
+    : wxPanel(parent, id, pos, size, wxTAB_TRAVERSAL | wxNO_BORDER,
+              className + wxT("_container")),
+    m_widget(NULL), m_lib(NULL), m_controlAdded(FALSE)
+{
+    SetBackgroundColour(wxColour(255, 0, 255));
+    if ( !!className )
+        LoadWidget(dllName, className, style);
+}
+
+wxDllWidget::~wxDllWidget()
+{
+    UnloadWidget();
+}
+
+void wxDllWidget::AddChild(wxWindowBase *child)
+{
+    wxASSERT_MSG( !m_controlAdded, wxT("Couldn't load two widgets into one container!") )
+
+    wxPanel::AddChild(child);
+
+    m_controlAdded = TRUE;
+    wxSizer *sizer = new wxBoxSizer(wxHORIZONTAL);
+    sizer->Add((wxWindow*)child, 1, wxEXPAND);
+    SetSizer(sizer);
+    SetAutoLayout(TRUE);
+    Layout();
+}
+
+
+wxString wxDllWidget::GetDllExt()
+{
+    return wxDllLoader::GetDllExt();
+}
+
+
+typedef WXDLLEXPORT bool (*DLL_WidgetFactory_t)(const wxString& className,
+                                                wxWindow *parent,
+                                                long style,
+                                                wxWindow **classInst,
+                                                wxSendCommandFunc *cmdFunc);
+
+bool wxDllWidget::LoadWidget(const wxString& dll, const wxString& className,
+                             long style)
+{
+    UnloadWidget();
+
+    // Load the dynamic library
+    m_lib = new wxDynamicLibrary(dll);
+    if ( !m_lib->IsLoaded() )
+    {
+        delete m_lib;
+        m_lib = NULL;
+        return FALSE;
+    }
+
+    DLL_WidgetFactory_t factory;
+    factory = (DLL_WidgetFactory_t) m_lib->GetSymbol(wxT("DLL_WidgetFactory"));
+    if ( factory == NULL)
+    {
+        delete m_lib;
+        m_lib = NULL;
+        return FALSE;
+    }
+
+    if ( !factory(className, this, style, &m_widget, &m_cmdFunc) )
+    {
+        delete m_widget;
+        delete m_lib;
+        m_lib = NULL;
+        m_widget = NULL;
+        return FALSE;
+    }
+
+    return TRUE;
+}
+
+void wxDllWidget::UnloadWidget()
+{
+    if ( m_widget )
+    {
+        DestroyChildren();
+        m_widget = NULL;
+        delete m_lib;
+        m_lib = NULL;
+    }
+}
+
+int wxDllWidget::SendCommand(int cmd, const wxString& param)
+{
+    wxASSERT_MSG( m_widget && m_cmdFunc, wxT("Sending command to not loaded widget!"));
+
+    return m_cmdFunc(m_widget, cmd, param);
+}