corrected off by 1 error in cMB2WC() call (thanks valgrind)

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

/////////////////////////////////////////////////////////////////////////////
// Name:        src/gtk/toplevel.cpp
// Purpose:
// Author:      Robert Roebling
// Id:          $Id$
// Copyright:   (c) 1998 Robert Roebling
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

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

// ============================================================================
// declarations
// ============================================================================

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

#ifdef __VMS
#define XIconifyWindow XICONIFYWINDOW
#endif

#include "wx/toplevel.h"

#ifndef WX_PRECOMP
    #include "wx/frame.h"
    #include "wx/icon.h"
    #include "wx/log.h"
    #include "wx/app.h"
#endif

#include "wx/gtk/private.h"
#include "wx/evtloop.h"
#include "wx/sysopt.h"

#include <gtk/gtk.h>
#include <gdk/gdkx.h>

#include "wx/gtk/win_gtk.h"

#include "wx/unix/utilsx11.h"

// XA_CARDINAL
#include <X11/Xatom.h>

// ----------------------------------------------------------------------------
// data
// ----------------------------------------------------------------------------

extern int              g_openDialogs;
extern wxWindowGTK     *g_delayedFocus;

// the frame that is currently active (i.e. its child has focus). It is
// used to generate wxActivateEvents
static wxTopLevelWindowGTK *g_activeFrame = (wxTopLevelWindowGTK*) NULL;
static wxTopLevelWindowGTK *g_lastActiveFrame = (wxTopLevelWindowGTK*) NULL;

// if we detect that the app has got/lost the focus, we set this variable to
// either TRUE or FALSE and an activate event will be sent during the next
// OnIdle() call and it is reset to -1: this value means that we shouldn't
// send any activate events at all
static int g_sendActivateEvent = -1;

//-----------------------------------------------------------------------------
// RequestUserAttention related functions
//-----------------------------------------------------------------------------

extern "C" {
static void wxgtk_window_set_urgency_hint (GtkWindow *win,
                                           gboolean setting)
{
    wxASSERT_MSG( GTK_WIDGET_REALIZED(win), wxT("wxgtk_window_set_urgency_hint: GdkWindow not realized") );
    GdkWindow *window = GTK_WIDGET(win)->window;
    XWMHints *wm_hints;

    wm_hints = XGetWMHints(GDK_WINDOW_XDISPLAY(window), GDK_WINDOW_XWINDOW(window));

    if (!wm_hints)
        wm_hints = XAllocWMHints();

    if (setting)
        wm_hints->flags |= XUrgencyHint;
    else
        wm_hints->flags &= ~XUrgencyHint;

    XSetWMHints(GDK_WINDOW_XDISPLAY(window), GDK_WINDOW_XWINDOW(window), wm_hints);
    XFree(wm_hints);
}

static gboolean gtk_frame_urgency_timer_callback( wxTopLevelWindowGTK *win )
{
#if GTK_CHECK_VERSION(2,7,0)
    if(!gtk_check_version(2,7,0))
        gtk_window_set_urgency_hint(GTK_WINDOW( win->m_widget ), FALSE);
    else
#endif
        wxgtk_window_set_urgency_hint(GTK_WINDOW( win->m_widget ), FALSE);

    win->m_urgency_hint = -2;
    return FALSE;
}
}

//-----------------------------------------------------------------------------
// "focus_in_event"
//-----------------------------------------------------------------------------

extern "C" {
static gboolean gtk_frame_focus_in_callback( GtkWidget *widget,
                                         GdkEvent *WXUNUSED(event),
                                         wxTopLevelWindowGTK *win )
{
    switch ( g_sendActivateEvent )
    {
        case -1:
            // we've got focus from outside, synthetize wxActivateEvent
            g_sendActivateEvent = 1;
            break;

        case 0:
            // another our window just lost focus, it was already ours before
            // - don't send any wxActivateEvent
            g_sendActivateEvent = -1;
            break;
    }

    g_activeFrame = win;
    g_lastActiveFrame = g_activeFrame;

    // wxPrintf( wxT("active: %s\n"), win->GetTitle().c_str() );

    // MR: wxRequestUserAttention related block
    switch( win->m_urgency_hint )
    {
        default:
            g_source_remove( win->m_urgency_hint );
            // no break, fallthrough to remove hint too
        case -1:
#if GTK_CHECK_VERSION(2,7,0)
            if(!gtk_check_version(2,7,0))
                gtk_window_set_urgency_hint(GTK_WINDOW( widget ), FALSE);
            else
#endif
            {
                wxgtk_window_set_urgency_hint(GTK_WINDOW( widget ), FALSE);
            }

            win->m_urgency_hint = -2;
            break;

        case -2: break;
    }

    wxLogTrace(wxT("activate"), wxT("Activating frame %p (from focus_in)"), g_activeFrame);
    wxActivateEvent event(wxEVT_ACTIVATE, true, g_activeFrame->GetId());
    event.SetEventObject(g_activeFrame);
    g_activeFrame->GetEventHandler()->ProcessEvent(event);

    return FALSE;
}
}

//-----------------------------------------------------------------------------
// "focus_out_event"
//-----------------------------------------------------------------------------

extern "C" {
static gboolean gtk_frame_focus_out_callback( GtkWidget *widget,
                                          GdkEventFocus *WXUNUSED(gdk_event),
                                          wxTopLevelWindowGTK *win )
{
    // if the focus goes out of our app alltogether, OnIdle() will send
    // wxActivateEvent, otherwise gtk_window_focus_in_callback() will reset
    // g_sendActivateEvent to -1
    g_sendActivateEvent = 0;

    // wxASSERT_MSG( (g_activeFrame == win), wxT("TLW deactivatd although it wasn't active") );

    // wxPrintf( wxT("inactive: %s\n"), win->GetTitle().c_str() );

    if (g_activeFrame)
    {
        wxLogTrace(wxT("activate"), wxT("Activating frame %p (from focus_in)"), g_activeFrame);
        wxActivateEvent event(wxEVT_ACTIVATE, false, g_activeFrame->GetId());
        event.SetEventObject(g_activeFrame);
        g_activeFrame->GetEventHandler()->ProcessEvent(event);

        g_activeFrame = NULL;
    }

    return FALSE;
}
}

//-----------------------------------------------------------------------------
// "size_allocate"
//-----------------------------------------------------------------------------

extern "C" {
static void gtk_frame_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxTopLevelWindowGTK *win )
{
    if (!win->m_hasVMT)
        return;

    if ((win->m_width != alloc->width) || (win->m_height != alloc->height))
    {
/*
        wxPrintf( wxT("gtk_frame_size_callback from ") );
        if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
           wxPrintf( win->GetClassInfo()->GetClassName() );
        wxPrintf( wxT(" %d %d %d %d\n"), (int)alloc->x,
                                (int)alloc->y,
                                (int)alloc->width,
                                (int)alloc->height );
*/

        // Tell the wxWindow class about the new size
        win->m_width = alloc->width;
        win->m_height = alloc->height;

        win->GtkUpdateSize();
    }
}
}

// ----------------------------------------------------------------------------
// "size_request"
// ----------------------------------------------------------------------------

extern "C" {
void wxgtk_tlw_size_request_callback(GtkWidget * WXUNUSED(widget),
                                     GtkRequisition *requisition,
                                     wxTopLevelWindowGTK *win)
{
    // we must return the size of the window without WM decorations, otherwise
    // GTK+ gets confused, so don't call just GetSize() here
    int w, h;
    win->GTKDoGetSize(&w, &h);

    requisition->height = h;
    requisition->width = w;
}
}
//-----------------------------------------------------------------------------
// "delete_event"
//-----------------------------------------------------------------------------

extern "C" {
static gboolean
gtk_frame_delete_callback( GtkWidget *WXUNUSED(widget),
                           GdkEvent *WXUNUSED(event),
                           wxTopLevelWindowGTK *win )
{
    if (win->IsEnabled() &&
        (g_openDialogs == 0 || (win->GetExtraStyle() & wxTOPLEVEL_EX_DIALOG) ||
         win->IsGrabbed()))
        win->Close();

    return TRUE;
}
}


//-----------------------------------------------------------------------------
// "configure_event"
//-----------------------------------------------------------------------------

extern "C" {
static gboolean
gtk_frame_configure_callback( GtkWidget* widget,
                              GdkEventConfigure *WXUNUSED(event),
                              wxTopLevelWindowGTK *win )
{
    if (!win->m_hasVMT || !win->IsShown())
        return FALSE;

    wxPoint point;
    gtk_window_get_position((GtkWindow*)widget, &point.x, &point.y);

    win->m_x = point.x;
    win->m_y = point.y;
    wxMoveEvent mevent(point, win->GetId());
    mevent.SetEventObject( win );
    win->GetEventHandler()->ProcessEvent( mevent );

    return FALSE;
}
}

//-----------------------------------------------------------------------------
// "realize" from m_widget
//-----------------------------------------------------------------------------

// we cannot MWM hints and icons before the widget has been realized,
// so we do this directly after realization

extern "C" {
static void
gtk_frame_realized_callback( GtkWidget * WXUNUSED(widget),
                             wxTopLevelWindowGTK *win )
{
    // All this is for Motif Window Manager "hints" and is supposed to be
    // recognized by other WM as well. Not tested.
    gdk_window_set_decorations(win->m_widget->window,
                               (GdkWMDecoration)win->m_gdkDecor);
    gdk_window_set_functions(win->m_widget->window,
                               (GdkWMFunction)win->m_gdkFunc);

    // GTK's shrinking/growing policy
    if ((win->m_gdkFunc & GDK_FUNC_RESIZE) == 0)
        gtk_window_set_resizable(GTK_WINDOW(win->m_widget), FALSE);
    else
        gtk_window_set_policy(GTK_WINDOW(win->m_widget), 1, 1, 1);

    // reset the icon
    wxIconBundle iconsOld = win->GetIcons();
    if ( !iconsOld.IsEmpty() )
    {
        win->SetIcon( wxNullIcon );
        win->SetIcons( iconsOld );
    }
}
}

//-----------------------------------------------------------------------------
// "map_event" from m_widget
//-----------------------------------------------------------------------------

extern "C" {
static gboolean
gtk_frame_map_callback( GtkWidget * WXUNUSED(widget),
                        GdkEvent * WXUNUSED(event),
                        wxTopLevelWindow *win )
{
    win->SetIconizeState(false);
    return false;
}
}

//-----------------------------------------------------------------------------
// "unmap_event" from m_widget
//-----------------------------------------------------------------------------

extern "C" {
static gboolean
gtk_frame_unmap_callback( GtkWidget * WXUNUSED(widget),
                          GdkEvent * WXUNUSED(event),
                          wxTopLevelWindow *win )
{
    win->SetIconizeState(true);
    return false;
}
}

//-----------------------------------------------------------------------------
// "expose_event" of m_client
//-----------------------------------------------------------------------------

extern "C" {
static gboolean
gtk_window_expose_callback( GtkWidget *widget,
                            GdkEventExpose *gdk_event,
                            wxWindow *win )
{
    GtkPizza *pizza = GTK_PIZZA(widget);

    gtk_paint_flat_box (win->m_widget->style,
                        pizza->bin_window, GTK_STATE_NORMAL,
                        GTK_SHADOW_NONE,
                        &gdk_event->area,
                        win->m_widget,
                        (char *)"base",
                        0, 0, -1, -1);

    return FALSE;
}
}

// ----------------------------------------------------------------------------
// wxTopLevelWindowGTK creation
// ----------------------------------------------------------------------------

void wxTopLevelWindowGTK::Init()
{
    m_sizeSet = false;
    m_miniEdge = 0;
    m_miniTitle = 0;
    m_mainWidget = (GtkWidget*) NULL;
    m_isIconized = false;
    m_fsIsShowing = false;
    m_themeEnabled = true;
    m_gdkDecor = m_gdkFunc = 0;
    m_grabbed = false;

    m_urgency_hint = -2;
}

bool wxTopLevelWindowGTK::Create( wxWindow *parent,
                                  wxWindowID id,
                                  const wxString& title,
                                  const wxPoint& pos,
                                  const wxSize& sizeOrig,
                                  long style,
                                  const wxString &name )
{
    // always create a frame of some reasonable, even if arbitrary, size (at
    // least for MSW compatibility)
    wxSize size = sizeOrig;
    size.x = WidthDefault(size.x);
    size.y = HeightDefault(size.y);

    wxTopLevelWindows.Append( this );

    if (!PreCreation( parent, pos, size ) ||
        !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
    {
        wxFAIL_MSG( wxT("wxTopLevelWindowGTK creation failed") );
        return false;
    }

    m_title = title;

    // NB: m_widget may be !=NULL if it was created by derived class' Create,
    //     e.g. in wxTaskBarIconAreaGTK
    if (m_widget == NULL)
    {
        if (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)
        {
            m_widget = gtk_window_new(GTK_WINDOW_TOPLEVEL);
            // Tell WM that this is a dialog window and make it center
            // on parent by default (this is what GtkDialog ctor does):
            gtk_window_set_type_hint(GTK_WINDOW(m_widget),
                                     GDK_WINDOW_TYPE_HINT_DIALOG);
            gtk_window_set_position(GTK_WINDOW(m_widget),
                                    GTK_WIN_POS_CENTER_ON_PARENT);
        }
        else
        {
            m_widget = gtk_window_new(GTK_WINDOW_TOPLEVEL);
#if GTK_CHECK_VERSION(2,1,0)
            if (!gtk_check_version(2,1,0))
            {
                if (style & wxFRAME_TOOL_WINDOW)
                {
                    gtk_window_set_type_hint(GTK_WINDOW(m_widget),
                                             GDK_WINDOW_TYPE_HINT_UTILITY);

                    // On some WMs, like KDE, a TOOL_WINDOW will still show
                    // on the taskbar, but on Gnome a TOOL_WINDOW will not.
                    // For consistency between WMs and with Windows, we
                    // should set the NO_TASKBAR flag which will apply
                    // the set_skip_taskbar_hint if it is available,
                    // ensuring no taskbar entry will appear.
                    style |= wxFRAME_NO_TASKBAR;
                }
            }
#endif
        }
    }

    wxWindow *topParent = wxGetTopLevelParent(m_parent);
    if (topParent && (((GTK_IS_WINDOW(topParent->m_widget)) &&
                       (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)) ||
                       (style & wxFRAME_FLOAT_ON_PARENT)))
    {
        gtk_window_set_transient_for( GTK_WINDOW(m_widget),
                                      GTK_WINDOW(topParent->m_widget) );
    }

#if GTK_CHECK_VERSION(2,2,0)
    if (!gtk_check_version(2,2,0))
    {
        if (style & wxFRAME_NO_TASKBAR)
        {
            gtk_window_set_skip_taskbar_hint(GTK_WINDOW(m_widget), TRUE);
        }
    }
#endif

#ifdef __WXGTK24__
    if (!gtk_check_version(2,4,0))
    {
        if (style & wxSTAY_ON_TOP)
        {
            gtk_window_set_keep_above(GTK_WINDOW(m_widget), TRUE);
        }
    }
#endif

#if 0
    if (!name.empty())
        gtk_window_set_role( GTK_WINDOW(m_widget), wxGTK_CONV( name ) );
#endif

    gtk_window_set_title( GTK_WINDOW(m_widget), wxGTK_CONV( title ) );
    GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );

    g_signal_connect (m_widget, "delete_event",
                      G_CALLBACK (gtk_frame_delete_callback), this);

    // m_mainWidget holds the toolbar, the menubar and the client area
    m_mainWidget = gtk_pizza_new();
    gtk_widget_show( m_mainWidget );
    GTK_WIDGET_UNSET_FLAGS( m_mainWidget, GTK_CAN_FOCUS );
    gtk_container_add( GTK_CONTAINER(m_widget), m_mainWidget );

    if (m_miniEdge == 0) // wxMiniFrame has its own version.
    {
       // For m_mainWidget themes
       g_signal_connect (m_mainWidget, "expose_event",
                         G_CALLBACK (gtk_window_expose_callback), this);
    }

    // m_wxwindow only represents the client area without toolbar and menubar
    m_wxwindow = gtk_pizza_new();
    gtk_widget_show( m_wxwindow );
    gtk_container_add( GTK_CONTAINER(m_mainWidget), m_wxwindow );

    // we donm't allow the frame to get the focus as otherwise
    // the frame will grab it at arbitrary focus changes
    GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );

    if (m_parent) m_parent->AddChild( this );

    // the user resized the frame by dragging etc.
    g_signal_connect (m_widget, "size_allocate",
                      G_CALLBACK (gtk_frame_size_callback), this);

    g_signal_connect (m_widget, "size_request",
                      G_CALLBACK (wxgtk_tlw_size_request_callback), this);
    PostCreation();

    if ((m_x != -1) || (m_y != -1))
        gtk_widget_set_uposition( m_widget, m_x, m_y );

    gtk_window_set_default_size( GTK_WINDOW(m_widget), m_width, m_height );

    //  we cannot set MWM hints and icons before the widget has
    //  been realized, so we do this directly after realization
    g_signal_connect (m_widget, "realize",
                      G_CALLBACK (gtk_frame_realized_callback), this);

    // map and unmap for iconized state
    g_signal_connect (m_widget, "map_event",
                      G_CALLBACK (gtk_frame_map_callback), this);
    g_signal_connect (m_widget, "unmap_event",
                      G_CALLBACK (gtk_frame_unmap_callback), this);

    // for wxMoveEvent
    g_signal_connect (m_widget, "configure_event",
                      G_CALLBACK (gtk_frame_configure_callback), this);

    // activation
    g_signal_connect_after (m_widget, "focus_in_event",
                      G_CALLBACK (gtk_frame_focus_in_callback), this);
    g_signal_connect_after (m_widget, "focus_out_event",
                      G_CALLBACK (gtk_frame_focus_out_callback), this);

    // decorations
    if ((style & wxSIMPLE_BORDER) || (style & wxNO_BORDER))
    {
        m_gdkDecor = 0;
        m_gdkFunc = 0;
    }
    else
    if (m_miniEdge > 0)
    {
        m_gdkDecor = 0;
        m_gdkFunc = 0;

        if ((style & wxRESIZE_BORDER) != 0)
           m_gdkFunc |= GDK_FUNC_RESIZE;
    }
    else
    {
        m_gdkDecor = (long) GDK_DECOR_BORDER;
        m_gdkFunc = (long) GDK_FUNC_MOVE;

        // All this is for Motif Window Manager "hints" and is supposed to be
        // recognized by other WMs as well.
        if ((style & wxCAPTION) != 0)
        {
            m_gdkDecor |= GDK_DECOR_TITLE;
        }
        if ((style & wxCLOSE_BOX) != 0)
        {
            m_gdkFunc |= GDK_FUNC_CLOSE;
        }
        if ((style & wxSYSTEM_MENU) != 0)
        {
            m_gdkDecor |= GDK_DECOR_MENU;
        }
        if ((style & wxMINIMIZE_BOX) != 0)
        {
            m_gdkFunc |= GDK_FUNC_MINIMIZE;
            m_gdkDecor |= GDK_DECOR_MINIMIZE;
        }
        if ((style & wxMAXIMIZE_BOX) != 0)
        {
            m_gdkFunc |= GDK_FUNC_MAXIMIZE;
            m_gdkDecor |= GDK_DECOR_MAXIMIZE;
        }
        if ((style & wxRESIZE_BORDER) != 0)
        {
           m_gdkFunc |= GDK_FUNC_RESIZE;
           m_gdkDecor |= GDK_DECOR_RESIZEH;
        }
    }

    return true;
}

wxTopLevelWindowGTK::~wxTopLevelWindowGTK()
{
    if (m_grabbed)
    {
        wxFAIL_MSG(_T("Window still grabbed"));
        RemoveGrab();
    }

    m_isBeingDeleted = true;

    // it may also be GtkScrolledWindow in the case of an MDI child
    if (GTK_IS_WINDOW(m_widget))
    {
        gtk_window_set_focus( GTK_WINDOW(m_widget), NULL );
    }

    if (g_activeFrame == this)
        g_activeFrame = NULL;
    if (g_lastActiveFrame == this)
        g_lastActiveFrame = NULL;
}

bool wxTopLevelWindowGTK::EnableCloseButton( bool enable )
{
    if (enable)
        m_gdkFunc |= GDK_FUNC_CLOSE;
    else
        m_gdkFunc &= ~GDK_FUNC_CLOSE;

    if (GTK_WIDGET_REALIZED(m_widget) && (m_widget->window))
        gdk_window_set_functions( m_widget->window, (GdkWMFunction)m_gdkFunc );

    return true;
}

bool wxTopLevelWindowGTK::ShowFullScreen(bool show, long)
{
    if (show == m_fsIsShowing)
        return false; // return what?

    m_fsIsShowing = show;

    wxX11FullScreenMethod method =
        wxGetFullScreenMethodX11((WXDisplay*)GDK_DISPLAY(),
                                 (WXWindow)GDK_ROOT_WINDOW());

#if GTK_CHECK_VERSION(2,2,0)
    // NB: gtk_window_fullscreen() uses freedesktop.org's WMspec extensions
    //     to switch to fullscreen, which is not always available. We must
    //     check if WM supports the spec and use legacy methods if it
    //     doesn't.
    if ( (method == wxX11_FS_WMSPEC) && !gtk_check_version(2,2,0) )
    {
        if (show)
            gtk_window_fullscreen( GTK_WINDOW( m_widget ) );
        else
            gtk_window_unfullscreen( GTK_WINDOW( m_widget ) );
    }
    else
#endif // GTK+ >= 2.2.0
    {
        GdkWindow *window = m_widget->window;

        if (show)
        {
            GetPosition( &m_fsSaveFrame.x, &m_fsSaveFrame.y );
            GetSize( &m_fsSaveFrame.width, &m_fsSaveFrame.height );

            int screen_width,screen_height;
            wxDisplaySize( &screen_width, &screen_height );

            gint client_x, client_y, root_x, root_y;
            gint width, height;

            if (method != wxX11_FS_WMSPEC)
            {
                // don't do it always, Metacity hates it
                m_fsSaveGdkFunc = m_gdkFunc;
                m_fsSaveGdkDecor = m_gdkDecor;
                m_gdkFunc = m_gdkDecor = 0;
                gdk_window_set_decorations(window, (GdkWMDecoration)0);
                gdk_window_set_functions(window, (GdkWMFunction)0);
            }

            gdk_window_get_origin (m_widget->window, &root_x, &root_y);
            gdk_window_get_geometry (m_widget->window, &client_x, &client_y,
                         &width, &height, NULL);

            gdk_window_move_resize (m_widget->window, -client_x, -client_y,
                        screen_width + 1, screen_height + 1);

            wxSetFullScreenStateX11((WXDisplay*)GDK_DISPLAY(),
                                    (WXWindow)GDK_ROOT_WINDOW(),
                                    (WXWindow)GDK_WINDOW_XWINDOW(window),
                                    show, &m_fsSaveFrame, method);
        }
        else // hide
        {
            if (method != wxX11_FS_WMSPEC)
            {
                // don't do it always, Metacity hates it
                m_gdkFunc = m_fsSaveGdkFunc;
                m_gdkDecor = m_fsSaveGdkDecor;
                gdk_window_set_decorations(window, (GdkWMDecoration)m_gdkDecor);
                gdk_window_set_functions(window, (GdkWMFunction)m_gdkFunc);
            }

            wxSetFullScreenStateX11((WXDisplay*)GDK_DISPLAY(),
                                    (WXWindow)GDK_ROOT_WINDOW(),
                                    (WXWindow)GDK_WINDOW_XWINDOW(window),
                                    show, &m_fsSaveFrame, method);

            SetSize(m_fsSaveFrame.x, m_fsSaveFrame.y,
                    m_fsSaveFrame.width, m_fsSaveFrame.height);
        }
    }

    // documented behaviour is to show the window if it's still hidden when
    // showing it full screen
    if (show)
        Show();

    return true;
}

// ----------------------------------------------------------------------------
// overridden wxWindow methods
// ----------------------------------------------------------------------------

bool wxTopLevelWindowGTK::Show( bool show )
{
    wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );

    if (show == IsShown())
        return false;

    if (show && !m_sizeSet)
    {
        /* by calling GtkOnSize here, we don't have to call
           either after showing the frame, which would entail
           much ugly flicker or from within the size_allocate
           handler, because GTK 1.1.X forbids that. */

        GtkOnSize();
    }

    wxTopLevelWindowBase::Show(show);

    if (!show)
    {
        // make sure window has a non-default position, so when it is shown
        // again, it won't be repositioned by WM as if it were a new window
        // Note that this must be done _after_ the window is hidden.
        gtk_window_move((GtkWindow*)m_widget, m_x, m_y);
    }

    return true;
}

void wxTopLevelWindowGTK::Raise()
{
    gtk_window_present( GTK_WINDOW( m_widget ) );
}

void wxTopLevelWindowGTK::DoMoveWindow(int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(width), int WXUNUSED(height) )
{
    wxFAIL_MSG( wxT("DoMoveWindow called for wxTopLevelWindowGTK") );
}

// ----------------------------------------------------------------------------
// window geometry
// ----------------------------------------------------------------------------

void wxTopLevelWindowGTK::GTKDoGetSize(int *width, int *height) const
{
    return wxTopLevelWindowBase::DoGetSize(width, height);
}

void wxTopLevelWindowGTK::GTKDoSetSize(int width, int height)
{
    // avoid recursions
    if (m_resizing)
        return;
    m_resizing = true;

    int old_width = m_width;
    int old_height = m_height;

    if ( width != -1 )
        m_width = width;
    if ( height != -1 )
        m_height = height;

    ConstrainSize();

    if ( m_width != old_width || m_height != old_height )
    {
        gtk_window_resize( GTK_WINDOW(m_widget), m_width, m_height );

        /* we set the size in GtkOnSize, i.e. mostly the actual resizing is
           done either directly before the frame is shown or in idle time
           so that different calls to SetSize() don't lead to flicker. */
        m_sizeSet = false;
    }

    m_resizing = false;
}

void wxTopLevelWindowGTK::DoSetSize( int x, int y, int width, int height, int sizeFlags )
{
    wxCHECK_RET( m_widget, wxT("invalid frame") );

    // this shouldn't happen: wxFrame, wxMDIParentFrame and wxMDIChildFrame have m_wxwindow
    wxASSERT_MSG( (m_wxwindow != NULL), wxT("invalid frame") );


    // deal with the position first
    int old_x = m_x;
    int old_y = m_y;

    if ( !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE) )
    {
        // -1 means "use existing" unless the flag above is specified
        if ( x != -1 )
            m_x = x;
        if ( y != -1 )
            m_y = y;
    }
    else // wxSIZE_ALLOW_MINUS_ONE
    {
        m_x = x;
        m_y = y;
    }

    if ( m_x != old_x || m_y != old_y )
    {
        gtk_window_move( GTK_WINDOW(m_widget), m_x, m_y );
    }


    // and now change the size: as we want to set the size of the entire
    // window, including decorations, we must adjust the size passed to
    // GTKDoSetSize() which takes with the size of undecorated frame only
    if ( width != -1 || height != -1 )
    {
        int wTotal,
            hTotal;
        DoGetSize(&wTotal, &hTotal);

        int wUndec,
            hUndec;
        GTKDoGetSize(&wUndec, &hUndec);

        if ( width != -1 )
            width -= wTotal - wUndec;
        if ( height != -1 )
            height -= hTotal - hUndec;
    }

    GTKDoSetSize(width, height);
}

void wxTopLevelWindowGTK::DoGetSize(int *width, int *height) const
{
    wxCHECK_RET( m_widget, wxT("invalid frame") );

    if ( !m_widget->window )
    {
        // this can happen if we're called before the window is realized, so
        // don't assert but just return the stored values
        GTKDoGetSize(width, height);
        return;
    }

    GdkRectangle rect;
    gdk_window_get_frame_extents(m_widget->window, &rect);

    if ( width )
        *width = rect.width;
    if ( height )
        *height = rect.height;
}

void wxTopLevelWindowGTK::DoGetClientSize( int *width, int *height ) const
{
    if ( IsIconized() )
    {
        // for consistency with wxMSW, client area is supposed to be empty for
        // the iconized windows
        if ( width )
            *width = 0;
        if ( height )
            *height = 0;

        return;
    }

    wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );

    if (height)
    {
        *height = m_height - 2 * m_miniEdge - m_miniTitle;
        if (*height < 0)
            *height = 0;
    }
    if (width)
    {
        *width = m_width - 2 * m_miniEdge;
        if (*width < 0)
            *width = 0;
    }
}

void wxTopLevelWindowGTK::DoSetSizeHints( int minW, int minH,
                                          int maxW, int maxH,
                                          int incW, int incH )
{
    wxTopLevelWindowBase::DoSetSizeHints( minW, minH, maxW, maxH, incW, incH );

    const wxSize minSize = GetMinSize();
    const wxSize maxSize = GetMaxSize();
    GdkGeometry hints;
    int hints_mask = 0;
    if (minSize.x > 0 || minSize.y > 0)
    {
        hints_mask |= GDK_HINT_MIN_SIZE;
        hints.min_width  = minSize.x > 0 ? minSize.x : 0;
        hints.min_height = minSize.y > 0 ? minSize.y : 0;
    }
    if (maxSize.x > 0 || maxSize.y > 0)
    {
        hints_mask |= GDK_HINT_MAX_SIZE;
        hints.max_width  = maxSize.x > 0 ? maxSize.x : INT_MAX;
        hints.max_height = maxSize.y > 0 ? maxSize.y : INT_MAX;
    }
    if (incW > 0 || incH > 0)
    {
        hints_mask |= GDK_HINT_RESIZE_INC;
        hints.width_inc  = incW > 0 ? incW : 1;
        hints.height_inc = incH > 0 ? incH : 1;
    }
    gtk_window_set_geometry_hints(
        (GtkWindow*)m_widget, NULL, &hints, (GdkWindowHints)hints_mask);
}


void wxTopLevelWindowGTK::GtkOnSize()
{
    // avoid recursions
    if (m_resizing) return;
    m_resizing = true;

    if ( m_wxwindow == NULL ) return;

    ConstrainSize();

    if (m_mainWidget)
    {
        gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
                              m_wxwindow,
                              0, 0, m_width, m_height);
    }

    m_sizeSet = true;

    // send size event to frame
    wxSizeEvent event( wxSize(m_width,m_height), GetId() );
    event.SetEventObject( this );
    GetEventHandler()->ProcessEvent( event );

    m_resizing = false;
}

void wxTopLevelWindowGTK::OnInternalIdle()
{
    if (!m_sizeSet && GTK_WIDGET_REALIZED(m_wxwindow))
    {
        GtkOnSize();

        // we'll come back later
        return;
    }

    // set the focus if not done yet and if we can already do it
    if ( GTK_WIDGET_REALIZED(m_wxwindow) )
    {
        if ( g_delayedFocus &&
             wxGetTopLevelParent((wxWindow*)g_delayedFocus) == this )
        {
            wxLogTrace(_T("focus"),
                       _T("Setting focus from wxTLW::OnIdle() to %s(%s)"),
                       g_delayedFocus->GetClassInfo()->GetClassName(),
                       g_delayedFocus->GetLabel().c_str());

            g_delayedFocus->SetFocus();
            g_delayedFocus = NULL;
        }
    }

    wxWindow::OnInternalIdle();

    // Synthetize activate events.
    if ( g_sendActivateEvent != -1 )
    {
        bool activate = g_sendActivateEvent != 0;

        // if (!activate) wxPrintf( wxT("de") );
        // wxPrintf( wxT("activate\n") );

        // do it only once
        g_sendActivateEvent = -1;

        wxTheApp->SetActive(activate, (wxWindow *)g_lastActiveFrame);
    }
}

// ----------------------------------------------------------------------------
// frame title/icon
// ----------------------------------------------------------------------------

void wxTopLevelWindowGTK::SetTitle( const wxString &title )
{
    wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );

    if ( title == m_title )
        return;

    m_title = title;

    gtk_window_set_title( GTK_WINDOW(m_widget), wxGTK_CONV( title ) );
}

void wxTopLevelWindowGTK::SetIcons( const wxIconBundle &icons )
{
    wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );

    wxTopLevelWindowBase::SetIcons( icons );

    GList *list = NULL;

    const size_t numIcons = icons.GetIconCount();
    for ( size_t i = 0; i < numIcons; i++ )
    {
        list = g_list_prepend(list, icons.GetIconByIndex(i).GetPixbuf());
    }

    gtk_window_set_icon_list(GTK_WINDOW(m_widget), list);
    g_list_free(list);
}

// ----------------------------------------------------------------------------
// frame state: maximized/iconized/normal
// ----------------------------------------------------------------------------

void wxTopLevelWindowGTK::Maximize(bool maximize)
{
    if (maximize)
        gtk_window_maximize( GTK_WINDOW( m_widget ) );
    else
        gtk_window_unmaximize( GTK_WINDOW( m_widget ) );
}

bool wxTopLevelWindowGTK::IsMaximized() const
{
    if(!m_widget->window)
        return false;

    return gdk_window_get_state(m_widget->window) & GDK_WINDOW_STATE_MAXIMIZED;
}

void wxTopLevelWindowGTK::Restore()
{
    // "Present" seems similar enough to "restore"
    gtk_window_present( GTK_WINDOW( m_widget ) );
}

void wxTopLevelWindowGTK::Iconize( bool iconize )
{
    if (iconize)
        gtk_window_iconify( GTK_WINDOW( m_widget ) );
    else
        gtk_window_deiconify( GTK_WINDOW( m_widget ) );
}

bool wxTopLevelWindowGTK::IsIconized() const
{
    return m_isIconized;
}

void wxTopLevelWindowGTK::SetIconizeState(bool iconize)
{
    if ( iconize != m_isIconized )
    {
        m_isIconized = iconize;
        (void)SendIconizeEvent(iconize);
    }
}

void wxTopLevelWindowGTK::AddGrab()
{
    if (!m_grabbed)
    {
        m_grabbed = true;
        gtk_grab_add( m_widget );
        wxGUIEventLoop().Run();
        gtk_grab_remove( m_widget );
    }
}

void wxTopLevelWindowGTK::RemoveGrab()
{
    if (m_grabbed)
    {
        gtk_main_quit();
        m_grabbed = false;
    }
}


// helper
static bool do_shape_combine_region(GdkWindow* window, const wxRegion& region)
{
    if (window)
    {
        if (region.IsEmpty())
        {
            gdk_window_shape_combine_mask(window, NULL, 0, 0);
        }
        else
        {
            gdk_window_shape_combine_region(window, region.GetRegion(), 0, 0);
            return true;
        }
    }
    return false;
}


bool wxTopLevelWindowGTK::SetShape(const wxRegion& region)
{
    wxCHECK_MSG( HasFlag(wxFRAME_SHAPED), false,
                 _T("Shaped windows must be created with the wxFRAME_SHAPED style."));

    GdkWindow *window = NULL;
    if (m_wxwindow)
    {
        window = GTK_PIZZA(m_wxwindow)->bin_window;
        do_shape_combine_region(window, region);
    }
    window = m_widget->window;
    return do_shape_combine_region(window, region);
}

bool wxTopLevelWindowGTK::IsActive()
{
    return (this == (wxTopLevelWindowGTK*)g_activeFrame);
}

void wxTopLevelWindowGTK::RequestUserAttention(int flags)
{
    bool new_hint_value = false;

    // FIXME: This is a workaround to focus handling problem
    // If RequestUserAttention is called for example right after a wxSleep, OnInternalIdle hasn't
    // yet been processed, and the internal focus system is not up to date yet.
    // wxYieldIfNeeded ensures the processing of it, but can have unwanted side effects - MR
    ::wxYieldIfNeeded();

    if(m_urgency_hint >= 0)
        g_source_remove(m_urgency_hint);

    m_urgency_hint = -2;

    if( GTK_WIDGET_REALIZED(m_widget) && !IsActive() )
    {
        new_hint_value = true;

        if (flags & wxUSER_ATTENTION_INFO)
        {
            m_urgency_hint = g_timeout_add(5000, (GSourceFunc)gtk_frame_urgency_timer_callback, this);
        } else {
            m_urgency_hint = -1;
        }
    }

#if GTK_CHECK_VERSION(2,7,0)
    if(!gtk_check_version(2,7,0))
        gtk_window_set_urgency_hint(GTK_WINDOW( m_widget ), new_hint_value);
    else
#endif
        wxgtk_window_set_urgency_hint(GTK_WINDOW( m_widget ), new_hint_value);
}

void wxTopLevelWindowGTK::SetWindowStyleFlag( long style )
{
#if defined(__WXGTK24__) || GTK_CHECK_VERSION(2,2,0)
    // Store which styles were changed
    long styleChanges = style ^ m_windowStyle;
#endif

    // Process wxWindow styles. This also updates the internal variable
    // Therefore m_windowStyle bits carry now the _new_ style values
    wxWindow::SetWindowStyleFlag(style);

    // just return for now if widget does not exist yet
    if (!m_widget)
        return;

#ifdef __WXGTK24__
    if ( (styleChanges & wxSTAY_ON_TOP) && !gtk_check_version(2,4,0) )
        gtk_window_set_keep_above(GTK_WINDOW(m_widget), m_windowStyle & wxSTAY_ON_TOP);
#endif // GTK+ 2.4
#if GTK_CHECK_VERSION(2,2,0)
    if ( (styleChanges & wxFRAME_NO_TASKBAR) && !gtk_check_version(2,2,0) )
    {
        gtk_window_set_skip_taskbar_hint(GTK_WINDOW(m_widget), m_windowStyle & wxFRAME_NO_TASKBAR);
    }
#endif // GTK+ 2.2
}

#include <X11/Xlib.h>

/* Get the X Window between child and the root window.
   This should usually be the WM managed XID */
static Window wxGetTopmostWindowX11(Display *dpy, Window child)
{
    Window root, parent;
    Window* children;
    unsigned int nchildren;

    XQueryTree(dpy, child, &root, &parent, &children, &nchildren);
    XFree(children);

    while (parent != root) {
        child = parent;
        XQueryTree(dpy, child, &root, &parent, &children, &nchildren);
        XFree(children);
    }

    return child;
}

bool wxTopLevelWindowGTK::SetTransparent(wxByte alpha)
{
    if (!m_widget || !m_widget->window)
        return false;

    Display* dpy = GDK_WINDOW_XDISPLAY (m_widget->window);
    // We need to get the X Window that has the root window as the immediate parent
    // and m_widget->window as a child. This should be the X Window that the WM manages and
    // from which the opacity property is checked from.
    Window win = wxGetTopmostWindowX11(dpy, GDK_WINDOW_XID (m_widget->window));

    unsigned int opacity = alpha * 0x1010101;

    // Using pure Xlib to not have a GTK version check mess due to gtk2.0 not having GdkDisplay
    if (alpha == 0xff)
        XDeleteProperty(dpy, win, XInternAtom(dpy, "_NET_WM_WINDOW_OPACITY", False));
    else
        XChangeProperty(dpy, win, XInternAtom(dpy, "_NET_WM_WINDOW_OPACITY", False),
                        XA_CARDINAL, 32, PropModeReplace,
                        (unsigned char *) &opacity, 1L);
    XSync(dpy, False);
    return true;
}

bool wxTopLevelWindowGTK::CanSetTransparent()
{
    // allow to override automatic detection as it's far from perfect
    static const wxChar *SYSOPT_TRANSPARENT = wxT("gtk.tlw.can-set-transparent");
    if ( wxSystemOptions::HasOption(SYSOPT_TRANSPARENT) )
    {
        return wxSystemOptions::GetOptionInt(SYSOPT_TRANSPARENT) != 0;
    }

#if GTK_CHECK_VERSION(2,10,0)
    if (!gtk_check_version(2,10,0))
    {
        return (gtk_widget_is_composited (m_widget));
    }
    else
#endif // In case of lower versions than gtk+-2.10.0 we could look for _NET_WM_CM_Sn ourselves
    {
        return false;
    }

#if 0 // Don't be optimistic here for the sake of wxAUI
    int opcode, event, error;
    // Check for the existence of a RGBA visual instead?
    return XQueryExtension(gdk_x11_get_default_xdisplay (),
                           "Composite", &opcode, &event, &error);
#endif
}