better fix for keeping m_pos in sync

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

diff --git a/src/gtk/app.cpp b/src/gtk/app.cpp
index 7d15b6e1b37250b70abbfda5d6c9b339f5abefbd..e7eef12e68bf988e87710cc40b521ea87c81abbe 100644 (file)
--- a/src/gtk/app.cpp
+++ b/src/gtk/app.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        app.cpp
+// Name:        src/gtk/app.cpp

 // Purpose:
 // Author:      Robert Roebling
 // Id:          $Id$
 // Purpose:
 // Author:      Robert Roebling
 // Id:          $Id$


@@ -7,295 +7,385 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-    #pragma implementation "app.h"
+#ifdef __VMS
+// vms_jackets.h should for proper working be included before anything else
+# include <vms_jackets.h>
+#undef ConnectionNumber

 #endif
 
 #endif
 

+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+

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

-#include "wx/gdicmn.h"
-#include "wx/utils.h"
-#include "wx/intl.h"
-#include "wx/log.h"
-#include "wx/memory.h"
-#include "wx/font.h"
-#include "wx/settings.h"
-#include "wx/dialog.h"
-
-#if wxUSE_WX_RESOURCES
-    #include "wx/resource.h"
+
+#ifndef WX_PRECOMP
+    #include "wx/intl.h"
+    #include "wx/log.h"
+    #include "wx/utils.h"
+    #include "wx/memory.h"
+    #include "wx/font.h"

 #endif
 
 #endif
 

-#include "wx/module.h"
-#include "wx/image.h"
+#include "wx/file.h"
+#include "wx/filename.h"
+#include "wx/thread.h"

 
 

-#if wxUSE_THREADS
-    #include "wx/thread.h"
+#ifdef __WXGPE__
+    #include <gpe/init.h>

 #endif
 
 #endif
 

-#include <unistd.h>
+#ifdef __WXUNIVERSAL__
+    #include "wx/univ/theme.h"
+    #include "wx/univ/renderer.h"
+#endif

 
 

-#include <glib.h>
-#include <gdk/gdk.h>
-#include <gtk/gtk.h>
+#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>
+    #ifdef HAVE_SYS_SELECT_H
+        #include <sys/select.h>
+    #endif
+#endif // HAVE_POLL/!HAVE_POLL
+
+#include "wx/unix/private.h"

 #include "wx/gtk/win_gtk.h"
 #include "wx/gtk/win_gtk.h"

+#include "wx/gtk/private.h"
+
+#include <gdk/gdkx.h>

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

-// global data
+// link GnomeVFS

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

-wxApp *wxTheApp = (wxApp *)  NULL;
-wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
+#if wxUSE_LIBGNOMEVFS
+#include "wx/html/forcelnk.h"
+FORCE_LINK(gnome_vfs)
+#endif

 
 

-extern bool g_isIdle;
+//-----------------------------------------------------------------------------
+// global data
+//-----------------------------------------------------------------------------

 
 

-bool   g_mainThreadLocked = FALSE;
-gint   g_pendingTag = 0;
+bool   g_mainThreadLocked = false;

 
 static GtkWidget *gs_RootWindow = (GtkWidget*) NULL;
 
 //-----------------------------------------------------------------------------
 
 static GtkWidget *gs_RootWindow = (GtkWidget*) NULL;
 
 //-----------------------------------------------------------------------------

-// local functions
+// idle system

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

-/* forward declaration */
-gint   wxapp_idle_callback( gpointer WXUNUSED(data) );
-gint   wxapp_pending_callback( gpointer WXUNUSED(data) );
-void   wxapp_install_idle_handler();
+void wxapp_install_idle_handler();

 
 #if wxUSE_THREADS
 
 #if wxUSE_THREADS

-gint   wxapp_wakeup_timerout_callback( gpointer WXUNUSED(data) );
+static wxMutex gs_idleTagsMutex;

 #endif
 
 #endif
 

-//-----------------------------------------------------------------------------
-// wxExit
-//-----------------------------------------------------------------------------
-
-void wxExit()
-{
-    gtk_main_quit();
-}
-

 //-----------------------------------------------------------------------------
 // wxYield
 //-----------------------------------------------------------------------------
 
 //-----------------------------------------------------------------------------
 // wxYield
 //-----------------------------------------------------------------------------
 

-static bool gs_inYield = FALSE;
+// not static because used by textctrl.cpp
+//
+// MT-FIXME
+bool wxIsInsideYield = false;

 
 

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

 {
 {

+    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
 #if wxUSE_THREADS
     if ( !wxThread::IsMain() )
     {
         // can't call gtk_main_iteration() from other threads like this

-        return TRUE;
+        return true;

     }
 #endif // wxUSE_THREADS
 
     }
 #endif // wxUSE_THREADS
 

-#ifdef __WXDEBUG__
-    if (gs_inYield)
-        wxFAIL_MSG( wxT("wxYield called recursively" ) );
-#endif
+    wxIsInsideYield = true;

 
 

-    gs_inYield = TRUE;
-
-    if (!g_isIdle)
-    {
-        // We need to remove idle callbacks or the loop will
-        // never finish.
-        gtk_idle_remove( wxTheApp->m_idleTag );
-        wxTheApp->m_idleTag = 0;
-        g_isIdle = TRUE;
-    }
-
-    while (gtk_events_pending())
-        gtk_main_iteration();
+    // We need to remove idle callbacks or the loop will
+    // never finish.
+    RemoveIdleSource();

 
 

+#if wxUSE_LOG

     // disable log flushing from here because a call to wxYield() shouldn't
     // normally result in message boxes popping up &c
     wxLog::Suspend();
     // disable log flushing from here because a call to wxYield() shouldn't
     // normally result in message boxes popping up &c
     wxLog::Suspend();

+#endif

 
 

-    /* 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) */
-    while (wxTheApp->ProcessIdle()) { }
+    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();
+
+#if wxUSE_LOG

     // let the logs be flashed again
     wxLog::Resume();
     // let the logs be flashed again
     wxLog::Resume();

+#endif

 
 

-    gs_inYield = FALSE;
+    wxIsInsideYield = false;

 
 

-    return TRUE;
+    return true;

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

-// wxYieldIfNeeded
-// Like wxYield, but fails silently if the yield is recursive.
+// wxWakeUpIdle

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

-bool wxYieldIfNeeded()
-{
-    if (gs_inYield)
-        return FALSE;
+// RR/KH: No wxMutexGui calls are needed here according to the GTK faq,
+// http://www.gtk.org/faq/#AEN500 - this caused problems for wxPostEvent.

 
 

-    return wxYield();
+void wxApp::WakeUpIdle()
+{
+    wxapp_install_idle_handler();

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

-// wxWakeUpIdle
+// local functions

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

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

 {
 {

-#if wxUSE_THREADS
-    if (!wxThread::IsMain())
-        wxMutexGuiEnter();
-#endif

 
 

-    if (g_isIdle)
-        wxapp_install_idle_handler();
-
-#if wxUSE_THREADS
-    if (!wxThread::IsMain())
-        wxMutexGuiLeave();
-#endif
+// One-shot emission hook for "event" signal, to install idle handler.
+// This will be called when the "event" signal is issued on any GtkWidget object.
+static gboolean
+event_emission_hook(GSignalInvocationHint*, guint, const GValue*, gpointer)
+{
+    wxapp_install_idle_handler();
+    // remove hook
+    return false;

 }
 
 }
 

-//-----------------------------------------------------------------------------
-// local functions
-//-----------------------------------------------------------------------------
+// add emission hook for "event" signal, to re-install idle handler when needed
+static inline void wxAddEmissionHook()
+{
+    GType widgetType = GTK_TYPE_WIDGET;
+    // if GtkWidget type is loaded
+    if (g_type_class_peek(widgetType) != NULL)
+    {
+        guint sig_id = g_signal_lookup("event", widgetType);
+        g_signal_add_emission_hook(sig_id, 0, event_emission_hook, NULL, NULL);
+    }
+}

 
 

-gint wxapp_pending_callback( gpointer WXUNUSED(data) )
+static gint wxapp_idle_callback( gpointer WXUNUSED(data) )

 {
 {

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

 
 

-    // when getting called from GDK's time-out handler
+#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() )
+        return false;
+#endif // __WXDEBUG__
+
+    // When getting called from GDK's time-out handler

     // we are no longer within GDK's grab on the GUI
     // we are no longer within GDK's grab on the GUI

-    // thread so we must lock it here ourselves
+    // thread so we must lock it here ourselves.

     gdk_threads_enter();
 
     gdk_threads_enter();
 

-    // Sent idle event to all who request them
-    wxTheApp->ProcessPendingEvents();
-
-    g_pendingTag = 0;
+    bool moreIdles;

 
 

-    /* flush the logged messages if any */
-#if wxUSE_LOG
-    wxLog::FlushActive();
-#endif // wxUSE_LOG
+    // Send idle event to all who request them as long as
+    // no events have popped up in the event queue.
+    while ( (moreIdles = wxTheApp->ProcessIdle()) && gtk_events_pending() == 0)
+        ;

 
     // Release lock again
     gdk_threads_leave();
 
 
     // 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;
-}
-
-gint wxapp_idle_callback( gpointer WXUNUSED(data) )
-{
-    if (!wxTheApp) return TRUE;
+    if (!moreIdles)
+    {
+#if wxUSE_THREADS
+        wxMutexLocker lock(gs_idleTagsMutex);
+#endif
+        // 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;

 
 

-    // 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();
+        wxAddEmissionHook();
+    }

 
 

-    /* Indicate that we are now in idle mode - even so deeply
-       in idle mode that we don't get any idle events anymore.
-       this is like wxMSW where an idle event is sent only
-       once each time after the event queue has been completely
-       emptied */
-    g_isIdle = TRUE;
-    wxTheApp->m_idleTag = 0;
+    // Return FALSE if no more idle events are to be sent
+    return moreIdles;
+}

 
 

-    // Sent idle event to all who request them
-    while (wxTheApp->ProcessIdle()) { }
+#if wxUSE_THREADS

 
 

-    // Release lock again
-    gdk_threads_leave();
+#ifdef HAVE_POLL
+    #define wxPoll poll
+    #define wxPollFd pollfd
+#else // !HAVE_POLL

 
 

-    // Return FALSE to indicate that no more idle events are
-    // to be sent (single shot instead of continuous stream)
-    return FALSE;
-}
+typedef GPollFD wxPollFd;

 
 

-void wxapp_install_idle_handler()
+int wxPoll(wxPollFd *ufds, unsigned int nfds, int timeout)

 {
 {

-    wxASSERT_MSG( wxTheApp->m_idleTag == 0, wxT("attempt to install idle handler twice") );
+    // 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;
+    wxFD_ZERO(&readfds);
+    wxFD_ZERO(&writefds);
+    wxFD_ZERO(&exceptfds);
+
+    unsigned int i;
+    for ( i = 0; i < nfds; i++ )
+    {
+        wxASSERT_MSG( ufds[i].fd < FD_SETSIZE, _T("fd out of range") );

 
 

-    g_isIdle = FALSE;
+        if ( ufds[i].events & G_IO_IN )
+            wxFD_SET(ufds[i].fd, &readfds);

 
 

-    if (g_pendingTag == 0)
-        g_pendingTag = gtk_idle_add_priority( 900, wxapp_pending_callback, (gpointer) NULL );
+        if ( ufds[i].events & G_IO_PRI )
+            wxFD_SET(ufds[i].fd, &exceptfds);

 
 

-    /* 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. */
+        if ( ufds[i].events & G_IO_OUT )
+            wxFD_SET(ufds[i].fd, &writefds);

 
 

-    wxTheApp->m_idleTag = gtk_idle_add_priority( 1000, wxapp_idle_callback, (gpointer) NULL );
-}
+        if ( ufds[i].fd > fdMax )
+            fdMax = ufds[i].fd;
+    }

 
 

-#if wxUSE_THREADS
+    fdMax++;
+    int res = select(fdMax, &readfds, &writefds, &exceptfds, &tv_timeout);

 
 

-static int g_threadUninstallLevel = 0;
+    // translate the results back
+    for ( i = 0; i < nfds; i++ )
+    {
+        ufds[i].revents = 0;

 
 

-void wxapp_install_thread_wakeup()
-{
-    g_threadUninstallLevel++;
+        if ( wxFD_ISSET(ufds[i].fd, &readfds ) )
+            ufds[i].revents |= G_IO_IN;

 
 

-    if (g_threadUninstallLevel != 1) return;
+        if ( wxFD_ISSET(ufds[i].fd, &exceptfds ) )
+            ufds[i].revents |= G_IO_PRI;

 
 

-    if (wxTheApp->m_wakeUpTimerTag) return;
+        if ( wxFD_ISSET(ufds[i].fd, &writefds ) )
+            ufds[i].revents |= G_IO_OUT;
+    }

 
 

-    wxTheApp->m_wakeUpTimerTag = gtk_timeout_add( 50, wxapp_wakeup_timerout_callback, (gpointer) NULL );
+    return res;

 }
 
 }
 

-void wxapp_uninstall_thread_wakeup()
+#endif // HAVE_POLL/!HAVE_POLL
+
+static gint wxapp_poll_func( GPollFD *ufds, guint nfds, gint timeout )

 {
 {

-    g_threadUninstallLevel--;
+    gdk_threads_enter();

 
 

-    if (g_threadUninstallLevel != 0) return;
+    wxMutexGuiLeave();
+    g_mainThreadLocked = true;

 
 

-    if (!wxTheApp->m_wakeUpTimerTag) return;
+    // 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 );

 
 

-    gtk_timeout_remove( wxTheApp->m_wakeUpTimerTag );
-    wxTheApp->m_wakeUpTimerTag = 0;
-}
+    wxMutexGuiEnter();
+    g_mainThreadLocked = false;

 
 

-gint wxapp_wakeup_timerout_callback( gpointer WXUNUSED(data) )
-{
-    // 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();
+    gdk_threads_leave();

 
 

-    wxapp_uninstall_thread_wakeup();
+    return res;
+}

 
 

-    // unblock other threads wishing to do some GUI things
-    wxMutexGuiLeave();
+#endif // wxUSE_THREADS

 
 

-    g_mainThreadLocked = TRUE;
+} // extern "C"
+
+void wxapp_install_idle_handler()
+{
+    if (wxTheApp == NULL)
+        return;

 
 

-    // wake up other threads
-    wxUsleep( 1 );
+#if wxUSE_THREADS
+    wxMutexLocker lock(gs_idleTagsMutex);
+#endif

 
 

-    // block other thread again
-    wxMutexGuiEnter();
+    // Don't install the handler if it's already installed. This test *MUST*
+    // be done when gs_idleTagsMutex is locked!
+    if (!g_isIdle)
+        return;

 
 

-    g_mainThreadLocked = FALSE;
+    // 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)") );

 
 

-    wxapp_install_thread_wakeup();
+    wxASSERT_MSG( wxTheApp->m_idleTag == 0, wxT("attempt to install idle handler twice") );

 
 

-    // release lock again
-    gdk_threads_leave();
+    g_isIdle = false;

 
 

-    return TRUE;
+    // 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 = g_idle_add_full(G_PRIORITY_LOW, wxapp_idle_callback, NULL, NULL);

 }
 
 }
 

-#endif // wxUSE_THREADS
+//-----------------------------------------------------------------------------
+// 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;
+}

 
 //-----------------------------------------------------------------------------
 // wxApp
 
 //-----------------------------------------------------------------------------
 // wxApp


@@ -304,553 +394,247 @@ gint wxapp_wakeup_timerout_callback( gpointer WXUNUSED(data) )
 IMPLEMENT_DYNAMIC_CLASS(wxApp,wxEvtHandler)
 
 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 IMPLEMENT_DYNAMIC_CLASS(wxApp,wxEvtHandler)
 
 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)

-    EVT_IDLE(wxApp::OnIdle)
+    EVT_IDLE(wxAppBase::OnIdle)

 END_EVENT_TABLE()
 
 wxApp::wxApp()
 {
 END_EVENT_TABLE()
 
 wxApp::wxApp()
 {

-    wxTheApp = this;
-
-    m_topWindow = (wxWindow *) NULL;
-    m_exitOnFrameDelete = TRUE;
+#ifdef __WXDEBUG__
+    m_isInAssert = false;
+#endif // __WXDEBUG__

 
     m_idleTag = 0;
 
     m_idleTag = 0;

+    g_isIdle = true;

     wxapp_install_idle_handler();
 
 #if wxUSE_THREADS
     wxapp_install_idle_handler();
 
 #if wxUSE_THREADS

-    m_wakeUpTimerTag = 0;
-    wxapp_install_thread_wakeup();
+    g_main_context_set_poll_func( NULL, wxapp_poll_func );

 #endif
 
 #endif
 

-    m_colorCube = (unsigned char*) NULL;
-
-    m_useBestVisual = FALSE;
+    // this is NULL for a "regular" wxApp, but is set (and freed) by a wxGLApp
+    m_glVisualInfo = (void *) NULL;
+    m_glFBCInfo = (void *) NULL;

 }
 
 wxApp::~wxApp()
 {
 }
 
 wxApp::~wxApp()
 {

-    if (m_idleTag) gtk_idle_remove( m_idleTag );
-
-#if wxUSE_THREADS
-    wxapp_uninstall_thread_wakeup();
-#endif
-
-    if (m_colorCube) free(m_colorCube);
+    if (m_idleTag)
+        g_source_remove( m_idleTag );

 }
 
 bool wxApp::OnInitGui()
 {
 }
 
 bool wxApp::OnInitGui()
 {

-    GdkVisual *visual = gdk_visual_get_system();
-
-    /* on some machines, the default visual is just 256 colours, so
-       we make sure we get the best. this can sometimes be wasteful,
-       of course, but what do these guys pay $30.000 for? */
+    if ( !wxAppBase::OnInitGui() )
+        return false;

 
 

-    if ((gdk_visual_get_best() != gdk_visual_get_system()) &&
-        (m_useBestVisual))
+    // 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();
         GdkVisual* vis = gtk_widget_get_default_visual();

-#else
-        GdkVisual* vis = gdk_visual_get_best();
-        gtk_widget_set_default_visual( vis );
-#endif

 
         GdkColormap *colormap = gdk_colormap_new( vis, FALSE );
         gtk_widget_set_default_colormap( colormap );
 
         GdkColormap *colormap = gdk_colormap_new( vis, FALSE );
         gtk_widget_set_default_colormap( colormap );

-
-        visual = vis;

     }
     }

-
-    /* Nothing to do for 15, 16, 24, 32 bit displays */
-    if (visual->depth > 8) return TRUE;
-
-    /* initialize color cube for 8-bit color reduction dithering */
-
-    GdkColormap *cmap = gtk_widget_get_default_colormap();
-
-    m_colorCube = (unsigned char*)malloc(32 * 32 * 32);
-
-    for (int r = 0; r < 32; r++)
+    else

     {
     {

-        for (int g = 0; g < 32; g++)
+        // On some machines, the default visual is just 256 colours, so
+        // we make sure we get the best. This can sometimes be wasteful.
+        if (m_useBestVisual)

         {
         {

-            for (int b = 0; b < 32; b++)
+            if (m_forceTrueColour)

             {
             {

-                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)
+                GdkVisual* visual = gdk_visual_get_best_with_both( 24, GDK_VISUAL_TRUE_COLOR );
+                if (!visual)

                 {
                 {

-                    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;
-                        }
-                    }
+                    wxLogError(wxT("Unable to initialize TrueColor visual."));
+                    return false;

                 }
                 }

-                else
+                GdkColormap *colormap = gdk_colormap_new( visual, FALSE );
+                gtk_widget_set_default_colormap( colormap );
+            }
+            else
+            {
+                if (gdk_visual_get_best() != gdk_visual_get_system())

                 {
                 {

-#if (GTK_MINOR_VERSION > 0)
-                    /* 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;
-#else
-                    wxFAIL_MSG( wxT("Unsupported graphics hardware") );
-#endif
+                    GdkVisual* visual = gdk_visual_get_best();
+                    GdkColormap *colormap = gdk_colormap_new( visual, FALSE );
+                    gtk_widget_set_default_colormap( colormap );

                 }
                 }

-                m_colorCube[ (r*1024) + (g*32) + b ] = index;

             }
         }
     }
 
             }
         }
     }
 

-    return TRUE;
-}
-
-bool wxApp::ProcessIdle()
-{
-    wxIdleEvent event;
-    event.SetEventObject( this );
-    ProcessEvent( event );
-
-    return event.MoreRequested();
+    return true;

 }
 
 }
 

-void wxApp::OnIdle( wxIdleEvent &event )
+GdkVisual *wxApp::GetGdkVisual()

 {
 {

-    static bool s_inOnIdle = FALSE;
-
-    /* Avoid recursion (via ProcessEvent default case) */
-    if (s_inOnIdle)
-        return;
-
-    s_inOnIdle = TRUE;
+    GdkVisual *visual = NULL;

 
 

-    /* Resend in the main thread events which have been prepared in other
-       threads */
-    ProcessPendingEvents();
-
-    /* 'Garbage' collection of windows deleted with Close(). */
-    DeletePendingObjects();
-
-    /* Send OnIdle events to all windows */
-    bool needMore = SendIdleEvents();
-
-    if (needMore)
-        event.RequestMore(TRUE);
-
-    s_inOnIdle = FALSE;
-}
-
-bool wxApp::SendIdleEvents()
-{
-    bool needMore = FALSE;
+    if (m_glVisualInfo)
+        visual = gdkx_visual_get( ((XVisualInfo *) m_glVisualInfo)->visualid );
+    else
+        visual = gdk_drawable_get_visual( wxGetRootWindow()->window );

 
 

-    wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
-    while (node)
-    {
-        wxWindow* win = node->GetData();
-        if (SendIdleEvents(win))
-            needMore = TRUE;
-        node = node->GetNext();
-    }
+    wxASSERT( visual );

 
 

-    return needMore;
+    return visual;

 }
 
 }
 

-bool wxApp::SendIdleEvents( wxWindow* win )
+bool wxApp::Initialize(int& argc, wxChar **argv)

 {
 {

-    bool needMore = FALSE;
+    bool init_result;

 
 

-    wxIdleEvent event;
-    event.SetEventObject(win);
-
-    win->GetEventHandler()->ProcessEvent(event);
-
-    win->OnInternalIdle();
+#if wxUSE_THREADS
+    if (!g_thread_supported())
+        g_thread_init(NULL);
+#endif // wxUSE_THREADS

 
 

-    if (event.MoreRequested())
-        needMore = TRUE;
+    gtk_set_locale();

 
 

-    wxNode* node = win->GetChildren().First();
-    while (node)
+    // We should have the wxUSE_WCHAR_T test on the _outside_
+#if wxUSE_WCHAR_T
+    // gtk+ 2.0 supports Unicode through UTF-8 strings
+    wxConvCurrent = &wxConvUTF8;
+#else // !wxUSE_WCHAR_T
+    if (!wxOKlibc())
+        wxConvCurrent = (wxMBConv*) NULL;
+#endif // wxUSE_WCHAR_T/!wxUSE_WCHAR_T
+
+    // decide which conversion to use for the file names
+
+    // (1) this variable exists for the sole purpose of specifying the encoding
+    //     of the filenames for GTK+ programs, so use it if it is set
+    wxString encName(wxGetenv(_T("G_FILENAME_ENCODING")));
+    encName = encName.BeforeFirst(_T(','));
+    if (encName.CmpNoCase(_T("@locale")) == 0)
+        encName.clear();
+    encName.MakeUpper();
+#if wxUSE_INTL
+    if (encName.empty())

     {
     {

-        wxWindow* win = (wxWindow*) node->Data();
-        if (SendIdleEvents(win))
-            needMore = TRUE;
-
-        node = node->Next();
+        // (2) if a non default locale is set, assume that the user wants his
+        //     filenames in this locale too
+        encName = wxLocale::GetSystemEncodingName().Upper();
+        // (3) finally use UTF-8 by default
+        if (encName.empty() || encName == _T("US-ASCII"))
+            encName = _T("UTF-8");
+        wxSetEnv(_T("G_FILENAME_ENCODING"), encName);

     }
     }

-    return needMore ;
-}
-
-int wxApp::MainLoop()
-{
-    gtk_main();
-    return 0;
-}
-
-void wxApp::ExitMainLoop()
-{
-    if (gtk_main_level() > 0)
-        gtk_main_quit();
-}
-
-bool wxApp::Initialized()
-{
-    return m_initialized;
-}
-
-bool wxApp::Pending()
-{
-    return (gtk_events_pending() > 0);
-}
-
-void wxApp::Dispatch()
-{
-    gtk_main_iteration();
-}
+#else
+    if (encName.empty())
+        encName = _T("UTF-8");
+#endif // wxUSE_INTL
+    static wxConvBrokenFileNames fileconv(encName);
+    wxConvFileName = &fileconv;

 
 

-void wxApp::DeletePendingObjects()
-{
-    wxNode *node = wxPendingDelete.First();
-    while (node)
+#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++ )

     {
     {

-        wxObject *obj = (wxObject *)node->Data();
-
-        delete obj;
-
-        if (wxPendingDelete.Find(obj))
-            delete node;
-
-        node = wxPendingDelete.First();
+        argvGTK[i] = wxStrdupA(wxConvUTF8.cWX2MB(argv[i]));

     }
     }

-}
-
-bool wxApp::Initialize()
-{
-    wxBuffer = new wxChar[BUFSIZ + 512];

 
 

-    wxClassInfo::InitializeClasses();
+    argvGTK[argc] = NULL;

 
 

-    wxSystemSettings::Init();
-    
-#if wxUSE_INTL
-    wxFont::SetDefaultEncoding(wxLocale::GetSystemEncoding());
-#endif
+    int argcGTK = argc;

 
 

-    // GL: I'm annoyed ... I don't know where to put this and I don't want to
-    // create a module for that as it's part of the core.
-#if wxUSE_THREADS
-    wxPendingEvents = new wxList();
-    wxPendingEventsLocker = new wxCriticalSection();
-#endif
-
-    wxTheColourDatabase = new wxColourDatabase( wxKEY_STRING );
-    wxTheColourDatabase->Initialize();
-
-    wxInitializeStockLists();
-    wxInitializeStockObjects();
-
-#if wxUSE_WX_RESOURCES
-    wxInitializeResourceSystem();
-#endif
-
-    wxModule::RegisterModules();
-    if (!wxModule::InitializeModules()) return FALSE;
-
-    return TRUE;
-}
-
-void wxApp::CleanUp()
-{
-    wxModule::CleanUpModules();
-
-#if wxUSE_WX_RESOURCES
-    wxCleanUpResourceSystem();
-#endif
-
-    if (wxTheColourDatabase)
-        delete wxTheColourDatabase;
-
-    wxTheColourDatabase = (wxColourDatabase*) NULL;
-
-    wxDeleteStockObjects();
-
-    wxDeleteStockLists();
-
-    delete wxTheApp;
-    wxTheApp = (wxApp*) NULL;
-
-    // GL: I'm annoyed ... I don't know where to put this and I don't want to
-    // create a module for that as it's part of the core.
-#if wxUSE_THREADS
-    delete wxPendingEvents;
-    delete wxPendingEventsLocker;
+#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
 
 #endif
 

-    wxSystemSettings::Done();
-
-    delete[] wxBuffer;
-
-    wxClassInfo::CleanUpClasses();
-
-    // check for memory leaks
-#if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
-    if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
+    if ( argcGTK != argc )

     {
     {

-        wxLogDebug(wxT("There were memory leaks.\n"));
-        wxDebugContext::Dump();
-        wxDebugContext::PrintStatistics();
-    }
-#endif // Debug
-
-#if wxUSE_LOG
-    // do this as the very last thing because everything else can log messages
-    wxLog::DontCreateOnDemand();
-
-    wxLog *oldLog = wxLog::SetActiveTarget( (wxLog*) NULL );
-    if (oldLog)
-        delete oldLog;
-#endif // wxUSE_LOG
-}
-
-//-----------------------------------------------------------------------------
-// Access to the root window global
-//-----------------------------------------------------------------------------
+        // 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);
+            }
+        }

 
 

-GtkWidget* wxGetRootWindow()
-{
-    if (gs_RootWindow == NULL) {
-        gs_RootWindow = gtk_window_new( GTK_WINDOW_TOPLEVEL );
-        gtk_widget_realize( gs_RootWindow );
+        argc = argcGTK;

     }
     }

-    return gs_RootWindow;
-}
-
-//-----------------------------------------------------------------------------
-// wxEntry
-//-----------------------------------------------------------------------------
-
+    //else: gtk_init() didn't modify our parameters

 
 

-int wxEntryStart( int argc, char *argv[] )
-{
-#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))
+    // free our copy
+    for ( i = 0; i < argcGTK; i++ )

     {
     {

-        printf( "wxWindows warning: GUI threading disabled due to outdated GTK version\n" );
-    }
-    else
-    {
-        g_thread_init(NULL);
+        free(argvGTK[i]);

     }
     }

-#endif

 
 

-    gtk_set_locale();
+    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

 
 

-    // 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
-    if (!wxOKlibc()) wxConvCurrent = &wxConvLocal;
-#endif
-#else
-    if (!wxOKlibc()) wxConvCurrent = (wxMBConv*) NULL;
-#endif
+    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();
 
     gdk_threads_enter();
 

-    gtk_init( &argc, &argv );
-
-    wxSetDetectableAutoRepeat( TRUE );
-
-    if (!wxApp::Initialize())
+    if ( !wxAppBase::Initialize(argc, argv) )

     {
         gdk_threads_leave();
     {
         gdk_threads_leave();

-        return -1;
-    }
-
-    return 0;
-}

 
 

+        return false;
+    }

 
 

-int wxEntryInitGui()
-{
-    int retValue = 0;
-
-    if ( !wxTheApp->OnInitGui() )
-        retValue = -1;
+    wxSetDetectableAutoRepeat( true );

 
 

-    wxGetRootWindow();
+#if wxUSE_INTL
+    wxFont::SetDefaultEncoding(wxLocale::GetSystemEncoding());
+#endif

 
 

-    return retValue;
+    return true;

 }
 
 }
 

-
-void wxEntryCleanup()
+void wxApp::CleanUp()

 {
 {

-#if wxUSE_LOG
-    // flush the logged messages if any
-    wxLog *log = wxLog::GetActiveTarget();
-    if (log != NULL && log->HasPendingMessages())
-        log->Flush();
-
-    // continuing to use user defined log target is unsafe from now on because
-    // some resources may be already unavailable, so replace it by something
-    // more safe
-    wxLog *oldlog = wxLog::SetActiveTarget(new wxLogStderr);
-    if ( oldlog )
-        delete oldlog;
-#endif // wxUSE_LOG
-
-    wxApp::CleanUp();
-

     gdk_threads_leave();
     gdk_threads_leave();

-}

 
 

+    wxAppBase::CleanUp();
+}

 
 

+#ifdef __WXDEBUG__

 
 

-int wxEntry( int argc, char *argv[] )
+void wxApp::OnAssertFailure(const wxChar *file,
+                            int line,
+                            const wxChar* func,
+                            const wxChar* cond,
+                            const wxChar *msg)

 {
 {

-#if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
-    // This seems to be necessary since there are 'rogue'
-    // objects present at this point (perhaps global objects?)
-    // Setting a checkpoint will ignore them as far as the
-    // memory checking facility is concerned.
-    // Of course you may argue that memory allocated in globals should be
-    // checked, but this is a reasonable compromise.
-    wxDebugContext::SetCheckpoint();
-#endif
-    int err = wxEntryStart(argc, argv);
-    if (err)
-        return err;
-
-    if (!wxTheApp)
-    {
-        wxCHECK_MSG( wxApp::GetInitializerFunction(), -1,
-                     wxT("wxWindows error: No initializer - use IMPLEMENT_APP macro.\n") );
-
-        wxAppInitializerFunction app_ini = wxApp::GetInitializerFunction();
-
-        wxObject *test_app = app_ini();
+    m_isInAssert = true;

 
 

-        wxTheApp = (wxApp*) test_app;
-    }
-
-    wxCHECK_MSG( wxTheApp, -1, wxT("wxWindows error: no application object") );
-
-    wxTheApp->argc = argc;
-#if wxUSE_UNICODE
-    wxTheApp->argv = new wxChar*[argc+1];
-    int mb_argc = 0;
-    while (mb_argc < argc)
-    {
-        wxTheApp->argv[mb_argc] = wxStrdup(wxConvLibc.cMB2WX(argv[mb_argc]));
-        mb_argc++;
-    }
-    wxTheApp->argv[mb_argc] = (wxChar *)NULL;
-#else
-    wxTheApp->argv = argv;
-#endif
-
-    wxString name(wxFileNameFromPath(argv[0]));
-    wxStripExtension( name );
-    wxTheApp->SetAppName( name );
-
-    int retValue;
-    retValue = wxEntryInitGui();
-
-    // Here frames insert themselves automatically into wxTopLevelWindows by
-    // getting created in OnInit().
-    if ( retValue == 0 )
-    {
-        if ( !wxTheApp->OnInit() )
-            retValue = -1;
-    }
-
-    if ( retValue == 0 )
-    {
-        /* delete pending toplevel windows (typically a single
-           dialog) so that, if there isn't any left, we don't
-           call OnRun() */
-        wxTheApp->DeletePendingObjects();
+    wxAppBase::OnAssertFailure(file, line, func, cond, msg);

 
 

-        wxTheApp->m_initialized = wxTopLevelWindows.GetCount() != 0;
-
-        if (wxTheApp->Initialized())
-        {
-            wxTheApp->OnRun();
-
-            wxWindow *topWindow = wxTheApp->GetTopWindow();
-            if (topWindow)
-            {
-                /* Forcibly delete the window. */
-                if (topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
-                    topWindow->IsKindOf(CLASSINFO(wxDialog)) )
-                {
-                    topWindow->Close( TRUE );
-                    wxTheApp->DeletePendingObjects();
-                }
-                else
-                {
-                    delete topWindow;
-                    wxTheApp->SetTopWindow( (wxWindow*) NULL );
-                }
-            }
-
-            retValue = wxTheApp->OnExit();
-        }
-    }
-
-    wxEntryCleanup();
-
-    return retValue;
+    m_isInAssert = false;

 }
 
 }
 

-#include "wx/gtk/info.xpm"
-#include "wx/gtk/error.xpm"
-#include "wx/gtk/question.xpm"
-#include "wx/gtk/warning.xpm"
+#endif // __WXDEBUG__

 
 

-wxIcon
-wxApp::GetStdIcon(int which) const
+void wxApp::RemoveIdleSource()

 {
 {

-    switch(which)
+#if wxUSE_THREADS
+    wxMutexLocker lock(gs_idleTagsMutex);
+#endif
+    if (m_idleTag != 0)

     {
     {

-        case wxICON_INFORMATION:
-            return wxIcon(info_xpm);
-
-        case wxICON_QUESTION:
-            return wxIcon(question_xpm);
-
-        case wxICON_EXCLAMATION:
-            return wxIcon(warning_xpm);
-
-        default:
-            wxFAIL_MSG(wxT("requested non existent standard icon"));
-            // still fall through
-
-        case wxICON_HAND:
-            return wxIcon(error_xpm);
+        g_source_remove(m_idleTag);
+        m_idleTag = 0;
+        g_isIdle = true;
+        wxAddEmissionHook();

     }
 }
     }
 }