security fix to wxSingleInstanceChecker: check if the lock file was really created...

[wxWidgets.git] / src / gtk1 / app.cpp

diff --git a/src/gtk1/app.cpp b/src/gtk1/app.cpp
index f65ab8ecafa32e8055e8105c821a3a178032d4d0..fcf11d84a13442c55da3c9ffd02089cdfba076be 100644 (file)
--- a/src/gtk1/app.cpp
+++ b/src/gtk1/app.cpp
@@ -4,13 +4,22 @@
 // Author:      Robert Roebling
 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling, Julian Smart
 // Author:      Robert Roebling
 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling, Julian Smart

-// Licence:    wxWindows licence
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-#pragma implementation "app.h"
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
+    #pragma implementation "app.h"

 #endif
 
 #endif
 

+#ifdef __VMS
+// vms_jackets.h should for proper working be included before anything else
+# include <vms_jackets.h>
+#undef ConnectionNumber
+#endif
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+

 #include "wx/app.h"
 #include "wx/gdicmn.h"
 #include "wx/utils.h"
 #include "wx/app.h"
 #include "wx/gdicmn.h"
 #include "wx/utils.h"


@@ -19,466 +28,645 @@
 #include "wx/memory.h"
 #include "wx/font.h"
 #include "wx/settings.h"
 #include "wx/memory.h"
 #include "wx/font.h"
 #include "wx/settings.h"

-#include "wx/resource.h"
+#include "wx/dialog.h"
+#include "wx/msgdlg.h"
+#include "wx/file.h"
+#include "wx/filename.h"
+#include "wx/module.h"
+#include "wx/image.h"
+
+#ifdef __WXGPE__
+#include <gpe/init.h>
+#endif
+
+#ifdef __WXUNIVERSAL__
+    #include "wx/univ/theme.h"
+    #include "wx/univ/renderer.h"
+#endif
+
+#if wxUSE_THREADS
+    #include "wx/thread.h"
+#endif
+
+#include <unistd.h>
+
+#ifdef HAVE_POLL
+    #if defined(__VMS)
+        #include <poll.h>
+    #else
+        // bug in the OpenBSD headers: at least in 3.1 there is no extern "C"
+        // in neither poll.h nor sys/poll.h which results in link errors later
+        #ifdef __OPENBSD__
+            extern "C"
+            {
+        #endif
+
+        #include <sys/poll.h>
+
+        #ifdef __OPENBSD__
+            };
+        #endif
+    #endif // platform
+#else // !HAVE_POLL
+    // we implement poll() ourselves using select() which is supposed exist in
+    // all modern Unices
+    #include <sys/types.h>
+    #include <sys/time.h>
+    #include <unistd.h>
+#endif // HAVE_POLL/!HAVE_POLL
+
+#include "wx/gtk/win_gtk.h"
+
+#include <gtk/gtk.h>

 
 

-#include "unistd.h"

 
 //-----------------------------------------------------------------------------
 // global data
 //-----------------------------------------------------------------------------
 
 
 //-----------------------------------------------------------------------------
 // global data
 //-----------------------------------------------------------------------------
 

-wxApp *wxTheApp = (wxApp *)  NULL;
-wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
-
-extern wxList wxPendingDelete;
-extern wxResourceCache *wxTheResourceCache;
+bool   g_mainThreadLocked = FALSE;
+gint   g_pendingTag = 0;

 
 

-unsigned char g_palette[64*3] =
-{
-  0x0,  0x0,  0x0,
-  0xff, 0xff, 0xff,
-  0xff, 0x0,  0x0,
-  0xff, 0xff, 0x0,
-  0x0,  0xff, 0x0,
-  0x0,  0x0,  0xff,
-  0x0,  0xff, 0xff,
-  0x99, 0x99, 0x99,
-  0xff, 0x88, 0x0,
-  0x88, 0x0,  0x0,
-  0x0,  0x88, 0x88,
-  0x88, 0x88, 0x0,
-  0xff, 0xcc, 0x97,
-  0xbb, 0xbb, 0xbb,
-  0x9f, 0x6b, 0x42,
-  0x55, 0x55, 0x55,
-  0xdd, 0xdd, 0xdd,
-  0x77, 0x77, 0x77,
-  0x33, 0x33, 0x33,
-  0xcc, 0x0,  0x0,
-  0xff, 0x44, 0x0,
-  0xff, 0xcc, 0x0,
-  0xcc, 0xcc, 0x0,
-  0x60, 0x60, 0x0,
-  0x0,  0x43, 0x0,
-  0x0,  0x7f, 0x0,
-  0x0,  0xcc, 0x0,
-  0x0,  0x44, 0x44,
-  0x0,  0x0,  0x44,
-  0x0,  0x0,  0x88,
-  0xef, 0xb1, 0x7b,
-  0xdf, 0x98, 0x5f,
-  0xbf, 0x87, 0x56,
-  0x7f, 0x57, 0x26,
-  0x5f, 0x39, 0xc,
-  0x3f, 0x1c, 0x0,
-  0x21, 0x0,  0x0,
-  0x0,  0x43, 0x87,
-  0x2d, 0x70, 0xaf,
-  0x5a, 0x9e, 0xd7,
-  0x87, 0xcc, 0xff,
-  0xff, 0xe0, 0xba,
-  0x21, 0x43, 0xf,
-  0x3d, 0x5d, 0x25,
-  0x59, 0x78, 0x3a,
-  0x75, 0x93, 0x4f,
-  0x91, 0xae, 0x64,
-  0xad, 0xc8, 0x7a,
-  0xf0, 0xa8, 0xef, 
-  0xd0, 0x88, 0xd0,
-  0xaf, 0x66, 0xaf,
-  0x8e, 0x44, 0x8e,
-  0x6d, 0x22, 0x6d,
-  0x4b, 0x0,  0x4b, 
-  0xff, 0xc0, 0xbc,
-  0xff, 0x93, 0x91,
-  0xff, 0x66, 0x67,
-  0xd8, 0xf2, 0xbf,
-  0xff, 0xc9, 0x68,
-  0xff, 0x96, 0x67,
-  0xa5, 0x60, 0xff,
-  0x51, 0xff, 0x99,
-  0x3f, 0xa5, 0x63,
-  0x98, 0x90, 0x67
-};
+static GtkWidget *gs_RootWindow = (GtkWidget*) NULL;

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

-// local functions
+// idle system

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

-extern void wxFlushResources(void);
+extern bool g_isIdle;
+
+void wxapp_install_idle_handler();

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

-// global functions
+// wxYield

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

-void wxExit(void)
-{
-  gtk_main_quit();
-}
+// not static because used by textctrl.cpp
+//
+// MT-FIXME
+bool wxIsInsideYield = FALSE;

 
 

-bool wxYield(void)
+bool wxApp::Yield(bool onlyIfNeeded)

 {
 {

-  while (gtk_events_pending() > 0) gtk_main_iteration();
-  return TRUE;
+    if ( wxIsInsideYield )
+    {
+        if ( !onlyIfNeeded )
+        {
+            wxFAIL_MSG( wxT("wxYield called recursively" ) );
+        }
+
+        return FALSE;
+    }
+
+#if wxUSE_THREADS
+    if ( !wxThread::IsMain() )
+    {
+        // can't call gtk_main_iteration() from other threads like this
+        return TRUE;
+    }
+#endif // wxUSE_THREADS
+
+    wxIsInsideYield = TRUE;
+
+    if (!g_isIdle)
+    {
+        // We need to remove idle callbacks or the loop will
+        // never finish.
+        gtk_idle_remove( m_idleTag );
+        m_idleTag = 0;
+        g_isIdle = TRUE;
+    }
+
+    // disable log flushing from here because a call to wxYield() shouldn't
+    // normally result in message boxes popping up &c
+    wxLog::Suspend();
+
+    while (gtk_events_pending())
+        gtk_main_iteration();
+
+    // It's necessary to call ProcessIdle() to update the frames sizes which
+    // might have been changed (it also will update other things set from
+    // OnUpdateUI() which is a nice (and desired) side effect). But we
+    // call ProcessIdle() only once since this is not meant for longish
+    // background jobs (controlled by wxIdleEvent::RequestMore() and the
+    // return value of Processidle().
+    ProcessIdle();
+
+    // let the logs be flashed again
+    wxLog::Resume();
+
+    wxIsInsideYield = FALSE;
+
+    return TRUE;

 }
 
 //-----------------------------------------------------------------------------
 }
 
 //-----------------------------------------------------------------------------

-// wxApp
+// wxWakeUpIdle

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

-IMPLEMENT_DYNAMIC_CLASS(wxApp,wxEvtHandler)
+void wxApp::WakeUpIdle()
+{
+#if wxUSE_THREADS
+    if (!wxThread::IsMain())
+        wxMutexGuiEnter();
+#endif

 
 

-BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
-    EVT_IDLE(wxApp::OnIdle)
-END_EVENT_TABLE()
+    if (g_isIdle)
+        wxapp_install_idle_handler();

 
 

-gint wxapp_idle_callback( gpointer WXUNUSED(data) )
-{
-  if (wxTheApp) while (wxTheApp->ProcessIdle()) {}
-  usleep( 10000 );
-  return TRUE;
+#if wxUSE_THREADS
+    if (!wxThread::IsMain())
+        wxMutexGuiLeave();
+#endif

 }
 
 }
 

-wxApp::wxApp()
-{
-  m_idleTag = 0;
-  m_topWindow = (wxWindow *) NULL;
-  m_exitOnFrameDelete = TRUE;
-  wxTheApp = this;
-}
+//-----------------------------------------------------------------------------
+// local functions
+//-----------------------------------------------------------------------------

 
 

-wxApp::~wxApp(void)
+// the callback functions must be extern "C" to comply with GTK+ declarations
+extern "C"

 {
 {

-  gtk_idle_remove( m_idleTag );
-}

 
 

-bool wxApp::OnInit(void)
+static gint wxapp_pending_callback( gpointer WXUNUSED(data) )

 {
 {

-  return TRUE;
-}
+    if (!wxTheApp) return TRUE;

 
 

-bool wxApp::OnInitGui(void)
-{
-  m_idleTag = gtk_idle_add( wxapp_idle_callback, NULL );
-  return TRUE;
-}
+    // When getting called from GDK's time-out handler
+    // we are no longer within GDK's grab on the GUI
+    // thread so we must lock it here ourselves.
+    gdk_threads_enter();

 
 

-int wxApp::OnRun(void)
-{
-  return MainLoop();
+    // Sent idle event to all who request them.
+    wxTheApp->ProcessPendingEvents();
+
+    g_pendingTag = 0;
+
+    // Flush the logged messages if any.
+#if wxUSE_LOG
+    wxLog::FlushActive();
+#endif // wxUSE_LOG
+
+    // Release lock again
+    gdk_threads_leave();
+
+    // Return FALSE to indicate that no more idle events are
+    // to be sent (single shot instead of continuous stream)
+    return FALSE;

 }
 
 }
 

-bool wxApp::ProcessIdle(void)
+static gint wxapp_idle_callback( gpointer WXUNUSED(data) )

 {
 {

-  wxIdleEvent event;
-  event.SetEventObject( this );
-  ProcessEvent( event );
+    if (!wxTheApp)
+        return TRUE;
+
+#ifdef __WXDEBUG__
+    // don't generate the idle events while the assert modal dialog is shown,
+    // this completely confuses the apps which don't expect to be reentered
+    // from some safely-looking functions
+    if ( wxTheApp->IsInAssert() )
+    {
+        // But repaint the assertion message if necessary
+        if (wxTopLevelWindows.GetCount() > 0)
+        {
+            wxWindow* win = (wxWindow*) wxTopLevelWindows.GetLast()->GetData();
+#ifdef __WXGTK20__
+            if (win->IsKindOf(CLASSINFO(wxMessageDialog)))
+#else
+            if (win->IsKindOf(CLASSINFO(wxGenericMessageDialog)))
+#endif
+                win->OnInternalIdle();
+        }
+        return TRUE;
+    }
+#endif // __WXDEBUG__
+
+    // When getting called from GDK's time-out handler
+    // we are no longer within GDK's grab on the GUI
+    // thread so we must lock it here ourselves.
+    gdk_threads_enter();
+
+    // Indicate that we are now in idle mode and event handlers
+    // will have to reinstall the idle handler again.
+    g_isIdle = TRUE;
+    wxTheApp->m_idleTag = 0;

 
 

-  return event.MoreRequested();
+    // Send idle event to all who request them as long as
+    // no events have popped up in the event queue.
+    while (wxTheApp->ProcessIdle() && (gtk_events_pending() == 0))
+        ;
+
+    // Release lock again
+    gdk_threads_leave();
+
+    // Return FALSE to indicate that no more idle events are
+    // to be sent (single shot instead of continuous stream).
+    return FALSE;

 }
 
 }
 

-void wxApp::OnIdle( wxIdleEvent &event )
+#if wxUSE_THREADS
+
+#ifdef HAVE_POLL
+    #define wxPoll poll
+    #define wxPollFd pollfd
+#else // !HAVE_POLL
+
+typedef GPollFD wxPollFd;
+
+int wxPoll(wxPollFd *ufds, unsigned int nfds, int timeout)

 {
 {

-  static bool inOnIdle = FALSE;
+    // convert timeout from ms to struct timeval (s/us)
+    timeval tv_timeout;
+    tv_timeout.tv_sec = timeout/1000;
+    tv_timeout.tv_usec = (timeout%1000)*1000;
+
+    // remember the highest fd used here
+    int fdMax = -1;
+
+    // and fill the sets for select()
+    fd_set readfds;
+    fd_set writefds;
+    fd_set exceptfds;
+    FD_ZERO(&readfds);
+    FD_ZERO(&writefds);
+    FD_ZERO(&exceptfds);
+
+    unsigned int i;
+    for ( i = 0; i < nfds; i++ )
+    {
+        wxASSERT_MSG( ufds[i].fd < FD_SETSIZE, _T("fd out of range") );

 
 

-  // Avoid recursion (via ProcessEvent default case)
-  if (inOnIdle)
-    return;
+        if ( ufds[i].events & G_IO_IN )
+            FD_SET(ufds[i].fd, &readfds);

 
 

-  inOnIdle = TRUE;
+        if ( ufds[i].events & G_IO_PRI )
+            FD_SET(ufds[i].fd, &exceptfds);

 
 

-  // 'Garbage' collection of windows deleted with Close().
-  DeletePendingObjects();
+        if ( ufds[i].events & G_IO_OUT )
+            FD_SET(ufds[i].fd, &writefds);

 
 

-  // flush the logged messages if any
-  wxLog *pLog = wxLog::GetActiveTarget();
-  if ( pLog != NULL && pLog->HasPendingMessages() )
-    pLog->Flush();
+        if ( ufds[i].fd > fdMax )
+            fdMax = ufds[i].fd;
+    }

 
 

-  // Send OnIdle events to all windows
-  bool needMore = SendIdleEvents();
+    fdMax++;
+    int res = select(fdMax, &readfds, &writefds, &exceptfds, &tv_timeout);

 
 

-  if (needMore)
-    event.RequestMore(TRUE);
+    // translate the results back
+    for ( i = 0; i < nfds; i++ )
+    {
+        ufds[i].revents = 0;

 
 

-  inOnIdle = FALSE;
-}
+        if ( FD_ISSET(ufds[i].fd, &readfds ) )
+            ufds[i].revents |= G_IO_IN;

 
 

-bool wxApp::SendIdleEvents(void)
-{
-    bool needMore = FALSE;
-       wxNode* node = wxTopLevelWindows.First();
-       while (node)
-       {
-               wxWindow* win = (wxWindow*) node->Data();
-               if (SendIdleEvents(win))
-            needMore = TRUE;
-
-               node = node->Next();
-       }
-    return needMore;
+        if ( FD_ISSET(ufds[i].fd, &exceptfds ) )
+            ufds[i].revents |= G_IO_PRI;
+
+        if ( FD_ISSET(ufds[i].fd, &writefds ) )
+            ufds[i].revents |= G_IO_OUT;
+    }
+
+    return res;

 }
 
 }
 

-bool wxApp::SendIdleEvents( wxWindow* win )
+#endif // HAVE_POLL/!HAVE_POLL
+
+static gint wxapp_poll_func( GPollFD *ufds, guint nfds, gint timeout )

 {
 {

-    bool needMore = FALSE;
+    gdk_threads_enter();

 
 

-       wxIdleEvent event;
-       event.SetEventObject(win);
-       win->ProcessEvent(event);
+    wxMutexGuiLeave();
+    g_mainThreadLocked = TRUE;

 
 

-    if (event.MoreRequested())
-        needMore = TRUE;
+    // we rely on the fact that glib GPollFD struct is really just pollfd but
+    // I wonder how wise is this in the long term (VZ)
+    gint res = wxPoll( (wxPollFd *) ufds, nfds, timeout );

 
 

-       wxNode* node = win->GetChildren()->First();
-       while (node)
-       {
-               wxWindow* win = (wxWindow*) node->Data();
-               if (SendIdleEvents(win))
-            needMore = TRUE;
+    wxMutexGuiEnter();
+    g_mainThreadLocked = FALSE;

 
 

-               node = node->Next();
-       }
-    return needMore ;
-}
+    gdk_threads_leave();

 
 

-int wxApp::OnExit(void)
-{
-  return 0;
+    return res;

 }
 
 }
 

-int wxApp::MainLoop(void)
-{
-  gtk_main();
-  return 0;
-}
+#endif // wxUSE_THREADS

 
 

-void wxApp::ExitMainLoop(void)
-{
-  gtk_main_quit();
-}
+} // extern "C"

 
 

-bool wxApp::Initialized(void)
+void wxapp_install_idle_handler()

 {
 {

-  return m_initialized;
-}
+    // GD: this assert is raised when using the thread sample (which works)
+    //     so the test is probably not so easy. Can widget callbacks be
+    //     triggered from child threads and, if so, for which widgets?
+    // wxASSERT_MSG( wxThread::IsMain() || gs_WakeUpIdle, wxT("attempt to install idle handler from widget callback in child thread (should be exclusively from wxWakeUpIdle)") );

 
 

-bool wxApp::Pending(void)
-{
-  return FALSE;
+    wxASSERT_MSG( wxTheApp->m_idleTag == 0, wxT("attempt to install idle handler twice") );
+
+    g_isIdle = FALSE;
+
+    if (g_pendingTag == 0)
+        g_pendingTag = gtk_idle_add_priority( 900, wxapp_pending_callback, (gpointer) NULL );
+
+    // This routine gets called by all event handlers
+    // indicating that the idle is over. It may also
+    // get called from other thread for sending events
+    // to the main thread (and processing these in
+    // idle time). Very low priority.
+    wxTheApp->m_idleTag = gtk_idle_add_priority( 1000, wxapp_idle_callback, (gpointer) NULL );

 }
 
 }
 

-void wxApp::Dispatch(void)
+//-----------------------------------------------------------------------------
+// Access to the root window global
+//-----------------------------------------------------------------------------
+
+GtkWidget* wxGetRootWindow()

 {
 {

+    if (gs_RootWindow == NULL)
+    {
+        gs_RootWindow = gtk_window_new( GTK_WINDOW_TOPLEVEL );
+        gtk_widget_realize( gs_RootWindow );
+    }
+    return gs_RootWindow;

 }
 
 }
 

-void wxApp::DeletePendingObjects(void)
+//-----------------------------------------------------------------------------
+// wxApp
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wxApp,wxEvtHandler)
+
+BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
+    EVT_IDLE(wxAppBase::OnIdle)
+END_EVENT_TABLE()
+
+wxApp::wxApp()

 {
 {

-  wxNode *node = wxPendingDelete.First();
-  while (node)
-  {
-    wxObject *obj = (wxObject *)node->Data();
+#ifdef __WXDEBUG__
+    m_isInAssert = FALSE;
+#endif // __WXDEBUG__

 
 

-    delete obj;
+    m_idleTag = 0;
+    wxapp_install_idle_handler();

 
 

-    if (wxPendingDelete.Member(obj))
-      delete node;
+#if wxUSE_THREADS
+    g_main_set_poll_func( wxapp_poll_func );
+#endif

 
 

-    node = wxPendingDelete.First();
-  }
-}
+    m_colorCube = (unsigned char*) NULL;

 
 

-wxWindow *wxApp::GetTopWindow(void)
-{
-  if (m_topWindow) return m_topWindow;
-  wxNode *node = wxTopLevelWindows.First();
-  if (!node) return (wxWindow *) NULL;
-  return (wxWindow*)node->Data();
+    // this is NULL for a "regular" wxApp, but is set (and freed) by a wxGLApp
+    m_glVisualInfo = (void *) NULL;

 }
 
 }
 

-void wxApp::SetTopWindow( wxWindow *win )
+wxApp::~wxApp()

 {
 {

-  m_topWindow = win;
+    if (m_idleTag) gtk_idle_remove( m_idleTag );
+
+    if (m_colorCube) free(m_colorCube);

 }
 
 }
 

-void wxApp::CommonInit(void)
+bool wxApp::OnInitGui()

 {
 {

+    if ( !wxAppBase::OnInitGui() )
+        return FALSE;
+
+    GdkVisual *visual = gdk_visual_get_system();

 
 

-/*
-#if wxUSE_RESOURCES
-  (void) wxGetResource("wxWindows", "OsVersion", &wxOsVersion);
+    // if this is a wxGLApp (derived from wxApp), and we've already
+    // chosen a specific visual, then derive the GdkVisual from that
+    if (m_glVisualInfo != NULL)
+    {
+#ifdef __WXGTK20__
+        // seems gtk_widget_set_default_visual no longer exists?
+        GdkVisual* vis = gtk_widget_get_default_visual();
+#else
+        GdkVisual* vis = gdkx_visual_get(
+            ((XVisualInfo *) m_glVisualInfo) ->visualid );
+        gtk_widget_set_default_visual( vis );

 #endif
 #endif

-*/
-  wxSystemSettings::Init();
-  wxTheResourceCache = new wxResourceCache(wxKEY_STRING);

 
 

-  wxTheFontNameDirectory =  new wxFontNameDirectory;
-  wxTheFontNameDirectory->Initialize();
+        GdkColormap *colormap = gdk_colormap_new( vis, FALSE );
+        gtk_widget_set_default_colormap( colormap );

 
 

-  wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
-  wxTheColourDatabase->Initialize();
+        visual = vis;
+    }

 
 

-  wxInitializeStockLists();
-  wxInitializeStockObjects();
+    // On some machines, the default visual is just 256 colours, so
+    // we make sure we get the best. This can sometimes be wasteful.

 
 

-  wxInitializeResourceSystem();
+    else
+    if ((gdk_visual_get_best() != gdk_visual_get_system()) && (m_useBestVisual))
+    {
+#ifdef __WXGTK20__
+        /* seems gtk_widget_set_default_visual no longer exists? */
+        GdkVisual* vis = gtk_widget_get_default_visual();
+#else
+        GdkVisual* vis = gdk_visual_get_best();
+        gtk_widget_set_default_visual( vis );
+#endif

 
 

-  wxImage::InitStandardHandlers();
-  
-//  g_globalCursor = new wxCursor;
-}
+        GdkColormap *colormap = gdk_colormap_new( vis, FALSE );
+        gtk_widget_set_default_colormap( colormap );

 
 

-void wxApp::CommonCleanUp(void)
-{
-  wxDELETE(wxTheColourDatabase);
-  wxDELETE(wxTheFontNameDirectory);
-  wxDeleteStockObjects();
+        visual = vis;
+    }

 
 

-  wxFlushResources();
+    // Nothing to do for 15, 16, 24, 32 bit displays
+    if (visual->depth > 8) return TRUE;

 
 

-  wxDELETE(wxTheResourceCache);
+    // initialize color cube for 8-bit color reduction dithering

 
 

-  wxDeleteStockLists();
+    GdkColormap *cmap = gtk_widget_get_default_colormap();

 
 

-  wxCleanUpResourceSystem();
-  
-  wxImage::CleanUpHandlers();
+    m_colorCube = (unsigned char*)malloc(32 * 32 * 32);

 
 

-  wxSystemSettings::Done();
-}
+    for (int r = 0; r < 32; r++)
+    {
+        for (int g = 0; g < 32; g++)
+        {
+            for (int b = 0; b < 32; b++)
+            {
+                int rr = (r << 3) | (r >> 2);
+                int gg = (g << 3) | (g >> 2);
+                int bb = (b << 3) | (b >> 2);
+
+                int index = -1;
+
+                GdkColor *colors = cmap->colors;
+                if (colors)
+                {
+                    int max = 3 * 65536;
+
+                    for (int i = 0; i < cmap->size; i++)
+                    {
+                        int rdiff = ((rr << 8) - colors[i].red);
+                        int gdiff = ((gg << 8) - colors[i].green);
+                        int bdiff = ((bb << 8) - colors[i].blue);
+                        int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
+                        if (sum < max)
+                        {
+                            index = i; max = sum;
+                        }
+                    }
+                }
+                else
+                {
+                    // assume 8-bit true or static colors. this really exists
+                    GdkVisual* vis = gdk_colormap_get_visual( cmap );
+                    index = (r >> (5 - vis->red_prec)) << vis->red_shift;
+                    index |= (g >> (5 - vis->green_prec)) << vis->green_shift;
+                    index |= (b >> (5 - vis->blue_prec)) << vis->blue_shift;
+                }
+                m_colorCube[ (r*1024) + (g*32) + b ] = index;
+            }
+        }
+    }

 
 

-wxLog *wxApp::CreateLogTarget()
-{
-  return new wxLogGui;
+    return TRUE;

 }
 
 }
 

-//-----------------------------------------------------------------------------
-// wxEntry
-//-----------------------------------------------------------------------------
-
-int wxEntry( int argc, char *argv[] )
+GdkVisual *wxApp::GetGdkVisual()

 {
 {

-  wxBuffer = new char[BUFSIZ + 512];
-
-  wxClassInfo::InitializeClasses();
+    GdkVisual *visual = NULL;

 
 

-#if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
+    if (m_glVisualInfo)
+        visual = gdkx_visual_get( ((XVisualInfo *) m_glVisualInfo)->visualid );
+    else
+        visual = gdk_window_get_visual( wxGetRootWindow()->window );

 
 

-  streambuf* sBuf = new wxDebugStreamBuf;
-  ostream* oStr = new ostream(sBuf) ;
-  wxDebugContext::SetStream(oStr, sBuf);
+    wxASSERT( visual );

 
 

-#endif
+    return visual;
+}

 
 

-  if (!wxTheApp)
-  {
-    if (!wxApp::GetInitializerFunction())
+bool wxApp::Initialize(int& argc, wxChar **argv)
+{
+    bool init_result;
+    
+#if wxUSE_THREADS
+    // GTK 1.2 up to version 1.2.3 has broken threads
+    if ((gtk_major_version == 1) &&
+        (gtk_minor_version == 2) &&
+        (gtk_micro_version < 4))

     {
     {

-      printf( "wxWindows error: No initializer - use IMPLEMENT_APP macro.\n" );
-      return 0;
+        printf( "wxWidgets warning: GUI threading disabled due to outdated GTK version\n" );
+    }
+    else
+    {
+        if (!g_thread_supported())
+            g_thread_init(NULL);
+    }
+#endif // wxUSE_THREADS
+
+    gtk_set_locale();
+
+    // We should have the wxUSE_WCHAR_T test on the _outside_
+#if wxUSE_WCHAR_T
+    #if defined(__WXGTK20__)
+        // gtk+ 2.0 supports Unicode through UTF-8 strings
+        wxConvCurrent = &wxConvUTF8;
+    #else // GTK 1.x
+        if (!wxOKlibc())
+            wxConvCurrent = &wxConvLocal;
+    #endif
+#else // !wxUSE_WCHAR_T
+    if (!wxOKlibc())
+        wxConvCurrent = (wxMBConv*) NULL;
+#endif // wxUSE_WCHAR_T/!wxUSE_WCHAR_T
+
+#if wxUSE_UNICODE
+    // gtk_init() wants UTF-8, not wchar_t, so convert
+    int i;
+    char **argvGTK = new char *[argc + 1];
+    for ( i = 0; i < argc; i++ )
+    {
+        argvGTK[i] = wxStrdupA(wxConvUTF8.cWX2MB(argv[i]));

     }
 
     }
 

-    wxAppInitializerFunction app_ini = wxApp::GetInitializerFunction();
-
-    wxObject *test_app = app_ini();
-
-    wxTheApp = (wxApp*) test_app;
-  }
-
-  if (!wxTheApp)
-  {
-    printf( "wxWindows error: wxTheApp == NULL\n" );
-    return 0;
-  }
-
-  wxTheApp->argc = argc;
-  wxTheApp->argv = argv;
-
-  char name[200];
-  strcpy( name, argv[0] );
-  strcpy( name, wxFileNameFromPath(name) );
-  wxStripExtension( name );
-  wxTheApp->SetAppName( name );
-  
-  gtk_set_locale();
-  
-  gtk_init( &argc, &argv );
-
-  GdkColormap *cmap = gdk_colormap_new( gdk_visual_get_system(), TRUE );
-
-  for (int i = 0; i < 64; i++)
-  {
-    GdkColor col;
-    col.red    = g_palette[i*3 + 0] << 8;
-    col.green  = g_palette[i*3 + 1] << 8;
-    col.blue   = g_palette[i*3 + 2] << 8;
-    col.pixel  = 0;
-    
-    gdk_color_alloc( cmap, &col );
-  }
-  
-  gtk_widget_push_colormap( cmap );
-  
-  gtk_widget_set_default_colormap( cmap );
-
-  wxApp::CommonInit();
-
-  wxTheApp->OnInitGui();
-
-  // Here frames insert themselves automatically
-  // into wxTopLevelWindows by getting created
-  // in OnInit().
+    argvGTK[argc] = NULL;

 
 

-  if (!wxTheApp->OnInit()) return 0;
+    int argcGTK = argc;
+    
+#ifdef __WXGPE__
+    init_result = true;  // is there a _check() version of this?
+    gpe_application_init( &argcGTK, &argvGTK );
+#else
+    init_result = gtk_init_check( &argcGTK, &argvGTK );
+#endif

 
 

-  wxTheApp->m_initialized = (wxTopLevelWindows.Number() > 0);
+    if ( argcGTK != argc )
+    {
+        // we have to drop the parameters which were consumed by GTK+
+        for ( i = 0; i < argcGTK; i++ )
+        {
+            while ( strcmp(wxConvUTF8.cWX2MB(argv[i]), argvGTK[i]) != 0 )
+            {
+                memmove(argv + i, argv + i + 1, argc - i);
+            }
+        }
+
+        argc = argcGTK;
+    }
+    //else: gtk_init() didn't modify our parameters

 
 

-  int retValue = 0;
+    // free our copy
+    for ( i = 0; i < argcGTK; i++ )
+    {
+        free(argvGTK[i]);
+    }

 
 

-  if (wxTheApp->Initialized()) retValue = wxTheApp->OnRun();
+    delete [] argvGTK;
+#else // !wxUSE_UNICODE
+    // gtk_init() shouldn't actually change argv itself (just its contents) so
+    // it's ok to pass pointer to it
+    init_result = gtk_init_check( &argc, &argv );
+#endif // wxUSE_UNICODE/!wxUSE_UNICODE

 
 

-  wxTheApp->DeletePendingObjects();
+    if (!init_result) {
+        wxLogError(wxT("Unable to initialize gtk, is DISPLAY set properly?"));
+        return false;
+    }
+    
+    // we can not enter threads before gtk_init is done
+    gdk_threads_enter();

 
 

-  wxTheApp->OnExit();
+    if ( !wxAppBase::Initialize(argc, argv) )
+    {
+        gdk_threads_leave();

 
 

-  wxApp::CommonCleanUp();
+        return false;
+    }

 
 

-  wxDELETE(wxTheApp);
+    wxSetDetectableAutoRepeat( TRUE );

 
 

-  wxLog *oldLog = wxLog::SetActiveTarget( NULL );
-  if (oldLog) delete oldLog;
-  
-  wxClassInfo::CleanUpClasses();
-  
-  delete[] wxBuffer;
-  
-#if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
-  
-  if (wxDebugContext::CountObjectsLeft() > 0)
-  {
-    wxTrace("There were memory leaks.\n");
-    wxDebugContext::Dump();
-    wxDebugContext::PrintStatistics();
-  }
-  wxDebugContext::SetStream(NULL, NULL);
-  
+#if wxUSE_INTL
+    wxFont::SetDefaultEncoding(wxLocale::GetSystemEncoding());

 #endif
 
 #endif
 

-  return retValue;
+    wxGetRootWindow();
+
+    return true;

 }
 
 }
 

-//-----------------------------------------------------------------------------
-// main()
-//-----------------------------------------------------------------------------
+void wxApp::CleanUp()
+{
+    gdk_threads_leave();

 
 

-#if defined(AIX) || defined(AIX4) || defined(____HPUX__) || defined(NOMAIN)
+    wxAppBase::CleanUp();
+}

 
 

- // main in IMPLEMENT_WX_MAIN in IMPLEMENT_APP in app.h
+#ifdef __WXDEBUG__

 
 

-#else
+void wxApp::OnAssert(const wxChar *file, int line, const wxChar* cond, const wxChar *msg)
+{
+    m_isInAssert = TRUE;

 
 

-  int main(int argc, char *argv[]) { return wxEntry(argc, argv); }
+    wxAppBase::OnAssert(file, line, cond, msg);

 
 

-#endif
+    m_isInAssert = FALSE;
+}

 
 

+#endif // __WXDEBUG__