src/gtk/toplevel.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/toplevel.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 // ============================================================================
  14 // declarations
  15 // ============================================================================
  16
  17 // ----------------------------------------------------------------------------
  18 // headers
  19 // ----------------------------------------------------------------------------
  20
  21 #ifdef __VMS
  22 #define XIconifyWindow XICONIFYWINDOW
  23 #endif
  24
  25 #include "wx/toplevel.h"
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/frame.h"
  29     #include "wx/icon.h"
  30     #include "wx/log.h"
  31     #include "wx/app.h"
  32 #endif
  33
  34 #include "wx/gtk/private.h"
  35 #include "wx/evtloop.h"
  36 #include "wx/sysopt.h"
  37
  38 #include <gtk/gtk.h>
  39 #include <gdk/gdkx.h>
  40
  41 #include "wx/gtk/win_gtk.h"
  42
  43 #include "wx/unix/utilsx11.h"
  44
  45 // XA_CARDINAL
  46 #include <X11/Xatom.h>
  47
  48 // ----------------------------------------------------------------------------
  49 // data
  50 // ----------------------------------------------------------------------------
  51
  52 extern int              g_openDialogs;
  53 extern wxWindowGTK     *g_delayedFocus;
  54
  55 // the frame that is currently active (i.e. its child has focus). It is
  56 // used to generate wxActivateEvents
  57 static wxTopLevelWindowGTK *g_activeFrame = (wxTopLevelWindowGTK*) NULL;
  58 static wxTopLevelWindowGTK *g_lastActiveFrame = (wxTopLevelWindowGTK*) NULL;
  59
  60 // if we detect that the app has got/lost the focus, we set this variable to
  61 // either TRUE or FALSE and an activate event will be sent during the next
  62 // OnIdle() call and it is reset to -1: this value means that we shouldn't
  63 // send any activate events at all
  64 static int g_sendActivateEvent = -1;
  65
  66 //-----------------------------------------------------------------------------
  67 // RequestUserAttention related functions
  68 //-----------------------------------------------------------------------------
  69
  70 extern "C" {
  71 static void wxgtk_window_set_urgency_hint (GtkWindow *win,
  72                                            gboolean setting)
  73 {
  74     wxASSERT_MSG( GTK_WIDGET_REALIZED(win), wxT("wxgtk_window_set_urgency_hint: GdkWindow not realized") );
  75     GdkWindow *window = GTK_WIDGET(win)->window;
  76     XWMHints *wm_hints;
  77
  78     wm_hints = XGetWMHints(GDK_WINDOW_XDISPLAY(window), GDK_WINDOW_XWINDOW(window));
  79
  80     if (!wm_hints)
  81         wm_hints = XAllocWMHints();
  82
  83     if (setting)
  84         wm_hints->flags |= XUrgencyHint;
  85     else
  86         wm_hints->flags &= ~XUrgencyHint;
  87
  88     XSetWMHints(GDK_WINDOW_XDISPLAY(window), GDK_WINDOW_XWINDOW(window), wm_hints);
  89     XFree(wm_hints);
  90 }
  91
  92 static gboolean gtk_frame_urgency_timer_callback( wxTopLevelWindowGTK *win )
  93 {
  94 #if GTK_CHECK_VERSION(2,7,0)
  95     if(!gtk_check_version(2,7,0))
  96         gtk_window_set_urgency_hint(GTK_WINDOW( win->m_widget ), FALSE);
  97     else
  98 #endif
  99         wxgtk_window_set_urgency_hint(GTK_WINDOW( win->m_widget ), FALSE);
 100
 101     win->m_urgency_hint = -2;
 102     return FALSE;
 103 }
 104 }
 105
 106 //-----------------------------------------------------------------------------
 107 // "focus_in_event"
 108 //-----------------------------------------------------------------------------
 109
 110 extern "C" {
 111 static gboolean gtk_frame_focus_in_callback( GtkWidget *widget,
 112                                          GdkEvent *WXUNUSED(event),
 113                                          wxTopLevelWindowGTK *win )
 114 {
 115     switch ( g_sendActivateEvent )
 116     {
 117         case -1:
 118             // we've got focus from outside, synthetize wxActivateEvent
 119             g_sendActivateEvent = 1;
 120             break;
 121
 122         case 0:
 123             // another our window just lost focus, it was already ours before
 124             // - don't send any wxActivateEvent
 125             g_sendActivateEvent = -1;
 126             break;
 127     }
 128
 129     g_activeFrame = win;
 130     g_lastActiveFrame = g_activeFrame;
 131
 132     // wxPrintf( wxT("active: %s\n"), win->GetTitle().c_str() );
 133
 134     // MR: wxRequestUserAttention related block
 135     switch( win->m_urgency_hint )
 136     {
 137         default:
 138             g_source_remove( win->m_urgency_hint );
 139             // no break, fallthrough to remove hint too
 140         case -1:
 141 #if GTK_CHECK_VERSION(2,7,0)
 142             if(!gtk_check_version(2,7,0))
 143                 gtk_window_set_urgency_hint(GTK_WINDOW( widget ), FALSE);
 144             else
 145 #endif
 146             {
 147                 wxgtk_window_set_urgency_hint(GTK_WINDOW( widget ), FALSE);
 148             }
 149
 150             win->m_urgency_hint = -2;
 151             break;
 152
 153         case -2: break;
 154     }
 155
 156     wxLogTrace(wxT("activate"), wxT("Activating frame %p (from focus_in)"), g_activeFrame);
 157     wxActivateEvent event(wxEVT_ACTIVATE, true, g_activeFrame->GetId());
 158     event.SetEventObject(g_activeFrame);
 159     g_activeFrame->GetEventHandler()->ProcessEvent(event);
 160
 161     return FALSE;
 162 }
 163 }
 164
 165 //-----------------------------------------------------------------------------
 166 // "focus_out_event"
 167 //-----------------------------------------------------------------------------
 168
 169 extern "C" {
 170 static
 171 gboolean gtk_frame_focus_out_callback(GtkWidget * WXUNUSED(widget),
 172                                       GdkEventFocus *WXUNUSED(gdk_event),
 173                                       wxTopLevelWindowGTK * WXUNUSED(win))
 174 {
 175     // if the focus goes out of our app alltogether, OnIdle() will send
 176     // wxActivateEvent, otherwise gtk_window_focus_in_callback() will reset
 177     // g_sendActivateEvent to -1
 178     g_sendActivateEvent = 0;
 179
 180     // wxASSERT_MSG( (g_activeFrame == win), wxT("TLW deactivatd although it wasn't active") );
 181
 182     // wxPrintf( wxT("inactive: %s\n"), win->GetTitle().c_str() );
 183
 184     if (g_activeFrame)
 185     {
 186         wxLogTrace(wxT("activate"), wxT("Activating frame %p (from focus_in)"), g_activeFrame);
 187         wxActivateEvent event(wxEVT_ACTIVATE, false, g_activeFrame->GetId());
 188         event.SetEventObject(g_activeFrame);
 189         g_activeFrame->GetEventHandler()->ProcessEvent(event);
 190
 191         g_activeFrame = NULL;
 192     }
 193
 194     return FALSE;
 195 }
 196 }
 197
 198 //-----------------------------------------------------------------------------
 199
 200 // Get cached size of WM decorations for given GdkWMDecoration.
 201 static wxSize& GetDecorSize(int decor)
 202 {
 203     // In testing, only the title bar and GDK_DECOR_BORDER made a difference.
 204     // 4 possible combinations of title bar and border
 205     static wxSize size[4];
 206
 207     int index = 0;
 208     // title bar
 209     if (decor & (GDK_DECOR_MENU | GDK_DECOR_MINIMIZE | GDK_DECOR_MAXIMIZE | GDK_DECOR_TITLE))
 210         index = 1;
 211     // border
 212     if (decor & GDK_DECOR_BORDER)
 213         index |= 2;
 214     return size[index];
 215 }
 216
 217 //-----------------------------------------------------------------------------
 218 // "size_allocate"
 219 //-----------------------------------------------------------------------------
 220
 221 extern "C" {
 222 static void gtk_frame_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxTopLevelWindowGTK *win )
 223 {
 224     if (!win->m_hasVMT)
 225         return;
 226
 227     wxSize sizeDecor;
 228     if (!win->IsFullScreen())
 229         sizeDecor = GetDecorSize(win->m_gdkDecor);
 230     const int w = alloc->width + sizeDecor.x;
 231     const int h = alloc->height + sizeDecor.y;
 232
 233     if (win->m_width != w || win->m_height != h)
 234     {
 235         win->m_width = w;
 236         win->m_height = h;
 237
 238         win->GtkUpdateSize();
 239     }
 240 }
 241 }
 242
 243 // ----------------------------------------------------------------------------
 244 // "size_request"
 245 // ----------------------------------------------------------------------------
 246
 247 extern "C" {
 248 static
 249 void wxgtk_tlw_size_request_callback(GtkWidget * WXUNUSED(widget),
 250                                      GtkRequisition *requisition,
 251                                      wxTopLevelWindowGTK *win)
 252 {
 253     // we must return the size of the window without WM decorations, otherwise
 254     // GTK+ gets confused, so don't call just GetSize() here
 255     win->GTKDoGetSize(&requisition->width, &requisition->height);
 256 }
 257 }
 258
 259 //-----------------------------------------------------------------------------
 260 // "delete_event"
 261 //-----------------------------------------------------------------------------
 262
 263 extern "C" {
 264 static gboolean
 265 gtk_frame_delete_callback( GtkWidget *WXUNUSED(widget),
 266                            GdkEvent *WXUNUSED(event),
 267                            wxTopLevelWindowGTK *win )
 268 {
 269     if (win->IsEnabled() &&
 270         (g_openDialogs == 0 || (win->GetExtraStyle() & wxTOPLEVEL_EX_DIALOG) ||
 271          win->IsGrabbed()))
 272         win->Close();
 273
 274     return TRUE;
 275 }
 276 }
 277
 278
 279 //-----------------------------------------------------------------------------
 280 // "configure_event"
 281 //-----------------------------------------------------------------------------
 282
 283 extern "C" {
 284 static gboolean
 285 gtk_frame_configure_callback( GtkWidget* widget,
 286                               GdkEventConfigure *WXUNUSED(event),
 287                               wxTopLevelWindowGTK *win )
 288 {
 289     if (!win->m_hasVMT || !win->IsShown())
 290         return FALSE;
 291
 292     wxPoint point;
 293     gtk_window_get_position((GtkWindow*)widget, &point.x, &point.y);
 294
 295     win->m_x = point.x;
 296     win->m_y = point.y;
 297     wxMoveEvent mevent(point, win->GetId());
 298     mevent.SetEventObject( win );
 299     win->GetEventHandler()->ProcessEvent( mevent );
 300
 301     return FALSE;
 302 }
 303 }
 304
 305 //-----------------------------------------------------------------------------
 306 // "realize" from m_widget
 307 //-----------------------------------------------------------------------------
 308
 309 // we cannot MWM hints and icons before the widget has been realized,
 310 // so we do this directly after realization
 311
 312 extern "C" {
 313 static void
 314 gtk_frame_realized_callback( GtkWidget * WXUNUSED(widget),
 315                              wxTopLevelWindowGTK *win )
 316 {
 317     // All this is for Motif Window Manager "hints" and is supposed to be
 318     // recognized by other WM as well. Not tested.
 319     gdk_window_set_decorations(win->m_widget->window,
 320                                (GdkWMDecoration)win->m_gdkDecor);
 321     gdk_window_set_functions(win->m_widget->window,
 322                                (GdkWMFunction)win->m_gdkFunc);
 323
 324     // GTK's shrinking/growing policy
 325     if ((win->m_gdkFunc & GDK_FUNC_RESIZE) == 0)
 326         gtk_window_set_resizable(GTK_WINDOW(win->m_widget), FALSE);
 327     else
 328         gtk_window_set_policy(GTK_WINDOW(win->m_widget), 1, 1, 1);
 329
 330     // reset the icon
 331     wxIconBundle iconsOld = win->GetIcons();
 332     if ( !iconsOld.IsEmpty() )
 333     {
 334         win->SetIcon( wxNullIcon );
 335         win->SetIcons( iconsOld );
 336     }
 337 }
 338 }
 339
 340 //-----------------------------------------------------------------------------
 341 // "map_event" from m_widget
 342 //-----------------------------------------------------------------------------
 343
 344 extern "C" {
 345 static gboolean
 346 gtk_frame_map_callback( GtkWidget* widget,
 347                         GdkEvent * WXUNUSED(event),
 348                         wxTopLevelWindow *win )
 349 {
 350     // Calculate size of WM decorations.
 351     // Done here in case WM does not support the _NET_FRAME_EXTENTS property.
 352     if (win->IsDecorCacheable() && !win->IsFullScreen())
 353     {
 354         GdkRectangle rect;
 355         gdk_window_get_frame_extents(widget->window, &rect);
 356         int w, h;
 357         gdk_drawable_get_size(widget->window, &w, &h);
 358         wxSize& decorSize = GetDecorSize(win->m_gdkDecor);
 359         const wxSize size = wxSize(rect.width - w, rect.height - h);
 360         if (decorSize.x != size.x || decorSize.y != size.y)
 361         {
 362             // Update window size and frame extents cache
 363             win->m_width = rect.width;
 364             win->m_height = rect.height;
 365             win->GtkUpdateSize();
 366             decorSize = size;
 367         }
 368     }
 369
 370     win->SetIconizeState(false);
 371     return false;
 372 }
 373 }
 374
 375 //-----------------------------------------------------------------------------
 376 // "unmap_event" from m_widget
 377 //-----------------------------------------------------------------------------
 378
 379 extern "C" {
 380 static gboolean
 381 gtk_frame_unmap_callback( GtkWidget * WXUNUSED(widget),
 382                           GdkEvent * WXUNUSED(event),
 383                           wxTopLevelWindow *win )
 384 {
 385     win->SetIconizeState(true);
 386     return false;
 387 }
 388 }
 389
 390 //-----------------------------------------------------------------------------
 391 // "property_notify_event" from m_widget
 392 //-----------------------------------------------------------------------------
 393
 394 extern "C" {
 395 static gboolean property_notify_event(
 396     GtkWidget*, GdkEventProperty* event, wxTopLevelWindowGTK* win)
 397 {
 398     // Watch for changes to _NET_FRAME_EXTENTS property
 399     static GdkAtom property = gdk_atom_intern("_NET_FRAME_EXTENTS", false);
 400     if (event->state == GDK_PROPERTY_NEW_VALUE && event->atom == property &&
 401         win->IsDecorCacheable() && !win->IsFullScreen())
 402     {
 403         Atom xproperty;
 404 #if GTK_CHECK_VERSION(2, 2, 0)
 405         if (gtk_check_version(2, 2, 0) == NULL)
 406         {
 407             xproperty = gdk_x11_atom_to_xatom_for_display(
 408                 gdk_drawable_get_display(event->window), property);
 409         }
 410         else
 411 #endif
 412         {
 413             xproperty = gdk_x11_atom_to_xatom(property);
 414         }
 415         Atom type;
 416         int format;
 417         gulong nitems, bytes_after;
 418         long* data = NULL;
 419         Status status = XGetWindowProperty(
 420             gdk_x11_drawable_get_xdisplay(event->window),
 421             gdk_x11_drawable_get_xid(event->window),
 422             xproperty,
 423             0, 4, false, XA_CARDINAL,
 424             &type, &format, &nitems, &bytes_after, (guchar**)&data);
 425         if (status == Success && data && nitems == 4)
 426         {
 427             wxSize& decorSize = GetDecorSize(win->m_gdkDecor);
 428             const wxSize size =
 429                 wxSize(int(data[0] + data[1]), int(data[2] + data[3]));
 430             if (decorSize.x != size.x || decorSize.y != size.y)
 431             {
 432                 // Update window size and frame extents cache
 433                 win->m_width  += size.x - decorSize.x;
 434                 win->m_height += size.y - decorSize.y;
 435                 if (win->m_width  < 0) win->m_width  = 0;
 436                 if (win->m_height < 0) win->m_height = 0;
 437                 win->GtkUpdateSize();
 438                 decorSize = size;
 439             }
 440         }
 441         if (data)
 442             XFree(data);
 443     }
 444     return false;
 445 }
 446 }
 447
 448 // ----------------------------------------------------------------------------
 449 // wxTopLevelWindowGTK creation
 450 // ----------------------------------------------------------------------------
 451
 452 void wxTopLevelWindowGTK::Init()
 453 {
 454     m_sizeSet = false;
 455     m_miniEdge = 0;
 456     m_miniTitle = 0;
 457     m_mainWidget = (GtkWidget*) NULL;
 458     m_isIconized = false;
 459     m_fsIsShowing = false;
 460     m_themeEnabled = true;
 461     m_gdkDecor = m_gdkFunc = 0;
 462     m_grabbed = false;
 463
 464     m_urgency_hint = -2;
 465 }
 466
 467 bool wxTopLevelWindowGTK::Create( wxWindow *parent,
 468                                   wxWindowID id,
 469                                   const wxString& title,
 470                                   const wxPoint& pos,
 471                                   const wxSize& sizeOrig,
 472                                   long style,
 473                                   const wxString &name )
 474 {
 475     // always create a frame of some reasonable, even if arbitrary, size (at
 476     // least for MSW compatibility)
 477     wxSize size = sizeOrig;
 478     size.x = WidthDefault(size.x);
 479     size.y = HeightDefault(size.y);
 480
 481     wxTopLevelWindows.Append( this );
 482
 483     if (!PreCreation( parent, pos, size ) ||
 484         !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
 485     {
 486         wxFAIL_MSG( wxT("wxTopLevelWindowGTK creation failed") );
 487         return false;
 488     }
 489
 490     m_title = title;
 491
 492     // NB: m_widget may be !=NULL if it was created by derived class' Create,
 493     //     e.g. in wxTaskBarIconAreaGTK
 494     if (m_widget == NULL)
 495     {
 496         if (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)
 497         {
 498             m_widget = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 499             // Tell WM that this is a dialog window and make it center
 500             // on parent by default (this is what GtkDialog ctor does):
 501             gtk_window_set_type_hint(GTK_WINDOW(m_widget),
 502                                      GDK_WINDOW_TYPE_HINT_DIALOG);
 503             gtk_window_set_position(GTK_WINDOW(m_widget),
 504                                     GTK_WIN_POS_CENTER_ON_PARENT);
 505         }
 506         else
 507         {
 508             m_widget = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 509 #if GTK_CHECK_VERSION(2,1,0)
 510             if (!gtk_check_version(2,1,0))
 511             {
 512                 if (style & wxFRAME_TOOL_WINDOW)
 513                 {
 514                     gtk_window_set_type_hint(GTK_WINDOW(m_widget),
 515                                              GDK_WINDOW_TYPE_HINT_UTILITY);
 516
 517                     // On some WMs, like KDE, a TOOL_WINDOW will still show
 518                     // on the taskbar, but on Gnome a TOOL_WINDOW will not.
 519                     // For consistency between WMs and with Windows, we
 520                     // should set the NO_TASKBAR flag which will apply
 521                     // the set_skip_taskbar_hint if it is available,
 522                     // ensuring no taskbar entry will appear.
 523                     style |= wxFRAME_NO_TASKBAR;
 524                 }
 525             }
 526 #endif
 527         }
 528     }
 529
 530     wxWindow *topParent = wxGetTopLevelParent(m_parent);
 531     if (topParent && (((GTK_IS_WINDOW(topParent->m_widget)) &&
 532                        (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)) ||
 533                        (style & wxFRAME_FLOAT_ON_PARENT)))
 534     {
 535         gtk_window_set_transient_for( GTK_WINDOW(m_widget),
 536                                       GTK_WINDOW(topParent->m_widget) );
 537     }
 538
 539 #if GTK_CHECK_VERSION(2,2,0)
 540     if (!gtk_check_version(2,2,0))
 541     {
 542         if (style & wxFRAME_NO_TASKBAR)
 543         {
 544             gtk_window_set_skip_taskbar_hint(GTK_WINDOW(m_widget), TRUE);
 545         }
 546     }
 547 #endif
 548
 549 #ifdef __WXGTK24__
 550     if (!gtk_check_version(2,4,0))
 551     {
 552         if (style & wxSTAY_ON_TOP)
 553         {
 554             gtk_window_set_keep_above(GTK_WINDOW(m_widget), TRUE);
 555         }
 556     }
 557 #endif
 558
 559 #if 0
 560     if (!name.empty())
 561         gtk_window_set_role( GTK_WINDOW(m_widget), wxGTK_CONV( name ) );
 562 #endif
 563
 564     gtk_window_set_title( GTK_WINDOW(m_widget), wxGTK_CONV( title ) );
 565     GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 566
 567     g_signal_connect (m_widget, "delete_event",
 568                       G_CALLBACK (gtk_frame_delete_callback), this);
 569
 570     // m_mainWidget holds the toolbar, the menubar and the client area
 571     m_mainWidget = gtk_pizza_new();
 572     gtk_widget_show( m_mainWidget );
 573     GTK_WIDGET_UNSET_FLAGS( m_mainWidget, GTK_CAN_FOCUS );
 574     gtk_container_add( GTK_CONTAINER(m_widget), m_mainWidget );
 575
 576     // m_wxwindow only represents the client area without toolbar and menubar
 577     m_wxwindow = gtk_pizza_new();
 578     gtk_widget_show( m_wxwindow );
 579     gtk_container_add( GTK_CONTAINER(m_mainWidget), m_wxwindow );
 580
 581     // we donm't allow the frame to get the focus as otherwise
 582     // the frame will grab it at arbitrary focus changes
 583     GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
 584
 585     if (m_parent) m_parent->AddChild( this );
 586
 587     // the user resized the frame by dragging etc.
 588     g_signal_connect (m_widget, "size_allocate",
 589                       G_CALLBACK (gtk_frame_size_callback), this);
 590
 591     g_signal_connect (m_widget, "size_request",
 592                       G_CALLBACK (wxgtk_tlw_size_request_callback), this);
 593     PostCreation();
 594
 595     if ((m_x != -1) || (m_y != -1))
 596         gtk_widget_set_uposition( m_widget, m_x, m_y );
 597
 598     //  we cannot set MWM hints and icons before the widget has
 599     //  been realized, so we do this directly after realization
 600     g_signal_connect (m_widget, "realize",
 601                       G_CALLBACK (gtk_frame_realized_callback), this);
 602
 603     // map and unmap for iconized state
 604     g_signal_connect (m_widget, "map_event",
 605                       G_CALLBACK (gtk_frame_map_callback), this);
 606     g_signal_connect (m_widget, "unmap_event",
 607                       G_CALLBACK (gtk_frame_unmap_callback), this);
 608
 609     // for wxMoveEvent
 610     g_signal_connect (m_widget, "configure_event",
 611                       G_CALLBACK (gtk_frame_configure_callback), this);
 612
 613     // activation
 614     g_signal_connect_after (m_widget, "focus_in_event",
 615                       G_CALLBACK (gtk_frame_focus_in_callback), this);
 616     g_signal_connect_after (m_widget, "focus_out_event",
 617                       G_CALLBACK (gtk_frame_focus_out_callback), this);
 618
 619     gtk_widget_add_events(m_widget, GDK_PROPERTY_CHANGE_MASK);
 620     g_signal_connect(m_widget, "property_notify_event",
 621         G_CALLBACK(property_notify_event), this);
 622
 623     // decorations
 624     if ((style & wxSIMPLE_BORDER) || (style & wxNO_BORDER))
 625     {
 626         m_gdkDecor = 0;
 627         m_gdkFunc = 0;
 628     }
 629     else
 630     if (m_miniEdge > 0)
 631     {
 632         m_gdkDecor = 0;
 633         m_gdkFunc = 0;
 634
 635         if ((style & wxRESIZE_BORDER) != 0)
 636            m_gdkFunc |= GDK_FUNC_RESIZE;
 637     }
 638     else
 639     {
 640         m_gdkDecor = GDK_DECOR_BORDER;
 641         m_gdkFunc = GDK_FUNC_MOVE;
 642
 643         // All this is for Motif Window Manager "hints" and is supposed to be
 644         // recognized by other WMs as well.
 645         if ((style & wxCAPTION) != 0)
 646         {
 647             m_gdkDecor |= GDK_DECOR_TITLE;
 648         }
 649         if ((style & wxCLOSE_BOX) != 0)
 650         {
 651             m_gdkFunc |= GDK_FUNC_CLOSE;
 652         }
 653         if ((style & wxSYSTEM_MENU) != 0)
 654         {
 655             m_gdkDecor |= GDK_DECOR_MENU;
 656         }
 657         if ((style & wxMINIMIZE_BOX) != 0)
 658         {
 659             m_gdkFunc |= GDK_FUNC_MINIMIZE;
 660             m_gdkDecor |= GDK_DECOR_MINIMIZE;
 661         }
 662         if ((style & wxMAXIMIZE_BOX) != 0)
 663         {
 664             m_gdkFunc |= GDK_FUNC_MAXIMIZE;
 665             m_gdkDecor |= GDK_DECOR_MAXIMIZE;
 666         }
 667         if ((style & wxRESIZE_BORDER) != 0)
 668         {
 669            m_gdkFunc |= GDK_FUNC_RESIZE;
 670            m_gdkDecor |= GDK_DECOR_RESIZEH;
 671         }
 672     }
 673
 674     // m_gdkDecor needs to be set before calling GTKDoGetSize
 675     int w, h;
 676     GTKDoGetSize(&w, &h);
 677     gtk_window_set_default_size(GTK_WINDOW(m_widget), w, h);
 678
 679     return true;
 680 }
 681
 682 wxTopLevelWindowGTK::~wxTopLevelWindowGTK()
 683 {
 684     if (m_grabbed)
 685     {
 686         wxFAIL_MSG(_T("Window still grabbed"));
 687         RemoveGrab();
 688     }
 689
 690     m_isBeingDeleted = true;
 691
 692     // it may also be GtkScrolledWindow in the case of an MDI child
 693     if (GTK_IS_WINDOW(m_widget))
 694     {
 695         gtk_window_set_focus( GTK_WINDOW(m_widget), NULL );
 696     }
 697
 698     if (g_activeFrame == this)
 699         g_activeFrame = NULL;
 700     if (g_lastActiveFrame == this)
 701         g_lastActiveFrame = NULL;
 702 }
 703
 704 bool wxTopLevelWindowGTK::EnableCloseButton( bool enable )
 705 {
 706     if (enable)
 707         m_gdkFunc |= GDK_FUNC_CLOSE;
 708     else
 709         m_gdkFunc &= ~GDK_FUNC_CLOSE;
 710
 711     if (GTK_WIDGET_REALIZED(m_widget) && (m_widget->window))
 712         gdk_window_set_functions( m_widget->window, (GdkWMFunction)m_gdkFunc );
 713
 714     return true;
 715 }
 716
 717 bool wxTopLevelWindowGTK::ShowFullScreen(bool show, long)
 718 {
 719     if (show == m_fsIsShowing)
 720         return false; // return what?
 721
 722     m_fsIsShowing = show;
 723
 724     wxX11FullScreenMethod method =
 725         wxGetFullScreenMethodX11((WXDisplay*)GDK_DISPLAY(),
 726                                  (WXWindow)GDK_ROOT_WINDOW());
 727
 728 #if GTK_CHECK_VERSION(2,2,0)
 729     // NB: gtk_window_fullscreen() uses freedesktop.org's WMspec extensions
 730     //     to switch to fullscreen, which is not always available. We must
 731     //     check if WM supports the spec and use legacy methods if it
 732     //     doesn't.
 733     if ( (method == wxX11_FS_WMSPEC) && !gtk_check_version(2,2,0) )
 734     {
 735         if (show)
 736             gtk_window_fullscreen( GTK_WINDOW( m_widget ) );
 737         else
 738             gtk_window_unfullscreen( GTK_WINDOW( m_widget ) );
 739     }
 740     else
 741 #endif // GTK+ >= 2.2.0
 742     {
 743         GdkWindow *window = m_widget->window;
 744
 745         if (show)
 746         {
 747             GetPosition( &m_fsSaveFrame.x, &m_fsSaveFrame.y );
 748             GetSize( &m_fsSaveFrame.width, &m_fsSaveFrame.height );
 749
 750             int screen_width,screen_height;
 751             wxDisplaySize( &screen_width, &screen_height );
 752
 753             gint client_x, client_y, root_x, root_y;
 754             gint width, height;
 755
 756             if (method != wxX11_FS_WMSPEC)
 757             {
 758                 // don't do it always, Metacity hates it
 759                 m_fsSaveGdkFunc = m_gdkFunc;
 760                 m_fsSaveGdkDecor = m_gdkDecor;
 761                 m_gdkFunc = m_gdkDecor = 0;
 762                 gdk_window_set_decorations(window, (GdkWMDecoration)0);
 763                 gdk_window_set_functions(window, (GdkWMFunction)0);
 764             }
 765
 766             gdk_window_get_origin (m_widget->window, &root_x, &root_y);
 767             gdk_window_get_geometry (m_widget->window, &client_x, &client_y,
 768                          &width, &height, NULL);
 769
 770             gdk_window_move_resize (m_widget->window, -client_x, -client_y,
 771                         screen_width + 1, screen_height + 1);
 772
 773             wxSetFullScreenStateX11((WXDisplay*)GDK_DISPLAY(),
 774                                     (WXWindow)GDK_ROOT_WINDOW(),
 775                                     (WXWindow)GDK_WINDOW_XWINDOW(window),
 776                                     show, &m_fsSaveFrame, method);
 777         }
 778         else // hide
 779         {
 780             if (method != wxX11_FS_WMSPEC)
 781             {
 782                 // don't do it always, Metacity hates it
 783                 m_gdkFunc = m_fsSaveGdkFunc;
 784                 m_gdkDecor = m_fsSaveGdkDecor;
 785                 gdk_window_set_decorations(window, (GdkWMDecoration)m_gdkDecor);
 786                 gdk_window_set_functions(window, (GdkWMFunction)m_gdkFunc);
 787             }
 788
 789             wxSetFullScreenStateX11((WXDisplay*)GDK_DISPLAY(),
 790                                     (WXWindow)GDK_ROOT_WINDOW(),
 791                                     (WXWindow)GDK_WINDOW_XWINDOW(window),
 792                                     show, &m_fsSaveFrame, method);
 793
 794             SetSize(m_fsSaveFrame.x, m_fsSaveFrame.y,
 795                     m_fsSaveFrame.width, m_fsSaveFrame.height);
 796         }
 797     }
 798
 799     // documented behaviour is to show the window if it's still hidden when
 800     // showing it full screen
 801     if (show)
 802         Show();
 803
 804     return true;
 805 }
 806
 807 // ----------------------------------------------------------------------------
 808 // overridden wxWindow methods
 809 // ----------------------------------------------------------------------------
 810
 811 bool wxTopLevelWindowGTK::Show( bool show )
 812 {
 813     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
 814
 815     if (show == IsShown())
 816         return false;
 817
 818     if (show && !m_sizeSet)
 819     {
 820         /* by calling GtkOnSize here, we don't have to call
 821            either after showing the frame, which would entail
 822            much ugly flicker or from within the size_allocate
 823            handler, because GTK 1.1.X forbids that. */
 824
 825         GtkOnSize();
 826     }
 827
 828     wxTopLevelWindowBase::Show(show);
 829
 830     if (!show)
 831     {
 832         // make sure window has a non-default position, so when it is shown
 833         // again, it won't be repositioned by WM as if it were a new window
 834         // Note that this must be done _after_ the window is hidden.
 835         gtk_window_move((GtkWindow*)m_widget, m_x, m_y);
 836     }
 837
 838     return true;
 839 }
 840
 841 void wxTopLevelWindowGTK::Raise()
 842 {
 843     gtk_window_present( GTK_WINDOW( m_widget ) );
 844 }
 845
 846 void wxTopLevelWindowGTK::DoMoveWindow(int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(width), int WXUNUSED(height) )
 847 {
 848     wxFAIL_MSG( wxT("DoMoveWindow called for wxTopLevelWindowGTK") );
 849 }
 850
 851 // ----------------------------------------------------------------------------
 852 // window geometry
 853 // ----------------------------------------------------------------------------
 854
 855 void wxTopLevelWindowGTK::GTKDoGetSize(int *width, int *height) const
 856 {
 857     wxSize size(m_width, m_height);
 858     if (!IsFullScreen())
 859     {
 860         size -= GetDecorSize(m_gdkDecor);
 861         if (size.x < 0) size.x = 0;
 862         if (size.y < 0) size.y = 0;
 863     }
 864     if (width)  *width  = size.x;
 865     if (height) *height = size.y;
 866 }
 867
 868 void wxTopLevelWindowGTK::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 869 {
 870     wxCHECK_RET( m_widget, wxT("invalid frame") );
 871
 872     // this shouldn't happen: wxFrame, wxMDIParentFrame and wxMDIChildFrame have m_wxwindow
 873     wxASSERT_MSG( (m_wxwindow != NULL), wxT("invalid frame") );
 874
 875
 876     // deal with the position first
 877     int old_x = m_x;
 878     int old_y = m_y;
 879
 880     if ( !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE) )
 881     {
 882         // -1 means "use existing" unless the flag above is specified
 883         if ( x != -1 )
 884             m_x = x;
 885         if ( y != -1 )
 886             m_y = y;
 887     }
 888     else // wxSIZE_ALLOW_MINUS_ONE
 889     {
 890         m_x = x;
 891         m_y = y;
 892     }
 893
 894     if ( m_x != old_x || m_y != old_y )
 895     {
 896         gtk_window_move( GTK_WINDOW(m_widget), m_x, m_y );
 897     }
 898
 899     m_resizing = true;
 900
 901     const wxSize oldSize(m_width, m_height);
 902     if (width >= 0)
 903         m_width = width;
 904     if (height >= 0)
 905         m_height = height;
 906     ConstrainSize();
 907     if (m_width != oldSize.x || m_height != oldSize.y)
 908     {
 909         int w, h;
 910         GTKDoGetSize(&w, &h);
 911         gtk_window_resize(GTK_WINDOW(m_widget), w, h);
 912         GtkUpdateSize();
 913     }
 914     m_resizing = false;
 915 }
 916
 917 void wxTopLevelWindowGTK::DoGetClientSize( int *width, int *height ) const
 918 {
 919     if ( IsIconized() )
 920     {
 921         // for consistency with wxMSW, client area is supposed to be empty for
 922         // the iconized windows
 923         if ( width )
 924             *width = 0;
 925         if ( height )
 926             *height = 0;
 927
 928         return;
 929     }
 930
 931     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
 932
 933     int w, h;
 934     GTKDoGetSize(&w, &h);
 935     if (width)
 936     {
 937         *width = w - 2 * m_miniEdge;
 938         if (*width < 0)
 939             *width = 0;
 940     }
 941     if (height)
 942     {
 943         *height = h - 2 * m_miniEdge - m_miniTitle;
 944         if (*height < 0)
 945             *height = 0;
 946     }
 947 }
 948
 949 void wxTopLevelWindowGTK::DoSetSizeHints( int minW, int minH,
 950                                           int maxW, int maxH,
 951                                           int incW, int incH )
 952 {
 953     wxTopLevelWindowBase::DoSetSizeHints( minW, minH, maxW, maxH, incW, incH );
 954
 955     const wxSize minSize = GetMinSize();
 956     const wxSize maxSize = GetMaxSize();
 957     GdkGeometry hints;
 958     int hints_mask = 0;
 959     const wxSize sizeDecor = GetDecorSize(m_gdkDecor);
 960     if (minSize.x > 0 || minSize.y > 0)
 961     {
 962         hints_mask |= GDK_HINT_MIN_SIZE;
 963         hints.min_width = minSize.x - sizeDecor.x;
 964         if (hints.min_width < 0)
 965             hints.min_width = 0;
 966         hints.min_height = minSize.y - sizeDecor.y;
 967         if (hints.min_height < 0)
 968             hints.min_height = 0;
 969     }
 970     if (maxSize.x > 0 || maxSize.y > 0)
 971     {
 972         hints_mask |= GDK_HINT_MAX_SIZE;
 973         hints.max_width = maxSize.x - sizeDecor.x;
 974         if (hints.max_width < 0)
 975             hints.max_width = INT_MAX;
 976         hints.max_height = maxSize.y - sizeDecor.y;
 977         if (hints.max_height < 0)
 978             hints.max_height = INT_MAX;
 979     }
 980     if (incW > 0 || incH > 0)
 981     {
 982         hints_mask |= GDK_HINT_RESIZE_INC;
 983         hints.width_inc  = incW > 0 ? incW : 1;
 984         hints.height_inc = incH > 0 ? incH : 1;
 985     }
 986     gtk_window_set_geometry_hints(
 987         (GtkWindow*)m_widget, NULL, &hints, (GdkWindowHints)hints_mask);
 988 }
 989
 990 void wxTopLevelWindowGTK::GtkOnSize()
 991 {
 992     // avoid recursions
 993     if (m_resizing) return;
 994     m_resizing = true;
 995
 996     if ( m_wxwindow == NULL ) return;
 997
 998     ConstrainSize();
 999
1000     if (m_mainWidget)
1001     {
1002         int w, h;
1003         GTKDoGetSize(&w, &h);
1004         gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
1005                               m_wxwindow,
1006                               0, 0, w, h);
1007     }
1008
1009     m_sizeSet = true;
1010
1011     // send size event to frame
1012     wxSizeEvent event( wxSize(m_width,m_height), GetId() );
1013     event.SetEventObject( this );
1014     GetEventHandler()->ProcessEvent( event );
1015
1016     m_resizing = false;
1017 }
1018
1019 bool wxTopLevelWindowGTK::IsDecorCacheable() const
1020 {
1021     return true;
1022 }
1023
1024 void wxTopLevelWindowGTK::OnInternalIdle()
1025 {
1026     if (!m_sizeSet && GTK_WIDGET_REALIZED(m_wxwindow))
1027     {
1028         GtkOnSize();
1029
1030         // we'll come back later
1031         return;
1032     }
1033
1034     // set the focus if not done yet and if we can already do it
1035     if ( GTK_WIDGET_REALIZED(m_wxwindow) )
1036     {
1037         if ( g_delayedFocus &&
1038              wxGetTopLevelParent((wxWindow*)g_delayedFocus) == this )
1039         {
1040             wxLogTrace(_T("focus"),
1041                        _T("Setting focus from wxTLW::OnIdle() to %s(%s)"),
1042                        g_delayedFocus->GetClassInfo()->GetClassName(),
1043                        g_delayedFocus->GetLabel().c_str());
1044
1045             g_delayedFocus->SetFocus();
1046             g_delayedFocus = NULL;
1047         }
1048     }
1049
1050     wxWindow::OnInternalIdle();
1051
1052     // Synthetize activate events.
1053     if ( g_sendActivateEvent != -1 )
1054     {
1055         bool activate = g_sendActivateEvent != 0;
1056
1057         // if (!activate) wxPrintf( wxT("de") );
1058         // wxPrintf( wxT("activate\n") );
1059
1060         // do it only once
1061         g_sendActivateEvent = -1;
1062
1063         wxTheApp->SetActive(activate, (wxWindow *)g_lastActiveFrame);
1064     }
1065 }
1066
1067 // ----------------------------------------------------------------------------
1068 // frame title/icon
1069 // ----------------------------------------------------------------------------
1070
1071 void wxTopLevelWindowGTK::SetTitle( const wxString &title )
1072 {
1073     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
1074
1075     if ( title == m_title )
1076         return;
1077
1078     m_title = title;
1079
1080     gtk_window_set_title( GTK_WINDOW(m_widget), wxGTK_CONV( title ) );
1081 }
1082
1083 void wxTopLevelWindowGTK::SetIcons( const wxIconBundle &icons )
1084 {
1085     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
1086
1087     wxTopLevelWindowBase::SetIcons( icons );
1088
1089     GList *list = NULL;
1090
1091     const size_t numIcons = icons.GetIconCount();
1092     for ( size_t i = 0; i < numIcons; i++ )
1093     {
1094         list = g_list_prepend(list, icons.GetIconByIndex(i).GetPixbuf());
1095     }
1096
1097     gtk_window_set_icon_list(GTK_WINDOW(m_widget), list);
1098     g_list_free(list);
1099 }
1100
1101 // ----------------------------------------------------------------------------
1102 // frame state: maximized/iconized/normal
1103 // ----------------------------------------------------------------------------
1104
1105 void wxTopLevelWindowGTK::Maximize(bool maximize)
1106 {
1107     if (maximize)
1108         gtk_window_maximize( GTK_WINDOW( m_widget ) );
1109     else
1110         gtk_window_unmaximize( GTK_WINDOW( m_widget ) );
1111 }
1112
1113 bool wxTopLevelWindowGTK::IsMaximized() const
1114 {
1115     if(!m_widget->window)
1116         return false;
1117
1118     return gdk_window_get_state(m_widget->window) & GDK_WINDOW_STATE_MAXIMIZED;
1119 }
1120
1121 void wxTopLevelWindowGTK::Restore()
1122 {
1123     // "Present" seems similar enough to "restore"
1124     gtk_window_present( GTK_WINDOW( m_widget ) );
1125 }
1126
1127 void wxTopLevelWindowGTK::Iconize( bool iconize )
1128 {
1129     if (iconize)
1130         gtk_window_iconify( GTK_WINDOW( m_widget ) );
1131     else
1132         gtk_window_deiconify( GTK_WINDOW( m_widget ) );
1133 }
1134
1135 bool wxTopLevelWindowGTK::IsIconized() const
1136 {
1137     return m_isIconized;
1138 }
1139
1140 void wxTopLevelWindowGTK::SetIconizeState(bool iconize)
1141 {
1142     if ( iconize != m_isIconized )
1143     {
1144         m_isIconized = iconize;
1145         (void)SendIconizeEvent(iconize);
1146     }
1147 }
1148
1149 void wxTopLevelWindowGTK::AddGrab()
1150 {
1151     if (!m_grabbed)
1152     {
1153         m_grabbed = true;
1154         gtk_grab_add( m_widget );
1155         wxGUIEventLoop().Run();
1156         gtk_grab_remove( m_widget );
1157     }
1158 }
1159
1160 void wxTopLevelWindowGTK::RemoveGrab()
1161 {
1162     if (m_grabbed)
1163     {
1164         gtk_main_quit();
1165         m_grabbed = false;
1166     }
1167 }
1168
1169
1170 // helper
1171 static bool do_shape_combine_region(GdkWindow* window, const wxRegion& region)
1172 {
1173     if (window)
1174     {
1175         if (region.IsEmpty())
1176         {
1177             gdk_window_shape_combine_mask(window, NULL, 0, 0);
1178         }
1179         else
1180         {
1181             gdk_window_shape_combine_region(window, region.GetRegion(), 0, 0);
1182             return true;
1183         }
1184     }
1185     return false;
1186 }
1187
1188
1189 bool wxTopLevelWindowGTK::SetShape(const wxRegion& region)
1190 {
1191     wxCHECK_MSG( HasFlag(wxFRAME_SHAPED), false,
1192                  _T("Shaped windows must be created with the wxFRAME_SHAPED style."));
1193
1194     GdkWindow *window = NULL;
1195     if (m_wxwindow)
1196     {
1197         window = GTK_PIZZA(m_wxwindow)->bin_window;
1198         do_shape_combine_region(window, region);
1199     }
1200     window = m_widget->window;
1201     return do_shape_combine_region(window, region);
1202 }
1203
1204 bool wxTopLevelWindowGTK::IsActive()
1205 {
1206     return (this == (wxTopLevelWindowGTK*)g_activeFrame);
1207 }
1208
1209 void wxTopLevelWindowGTK::RequestUserAttention(int flags)
1210 {
1211     bool new_hint_value = false;
1212
1213     // FIXME: This is a workaround to focus handling problem
1214     // If RequestUserAttention is called for example right after a wxSleep, OnInternalIdle hasn't
1215     // yet been processed, and the internal focus system is not up to date yet.
1216     // wxYieldIfNeeded ensures the processing of it, but can have unwanted side effects - MR
1217     ::wxYieldIfNeeded();
1218
1219     if(m_urgency_hint >= 0)
1220         g_source_remove(m_urgency_hint);
1221
1222     m_urgency_hint = -2;
1223
1224     if( GTK_WIDGET_REALIZED(m_widget) && !IsActive() )
1225     {
1226         new_hint_value = true;
1227
1228         if (flags & wxUSER_ATTENTION_INFO)
1229         {
1230             m_urgency_hint = g_timeout_add(5000, (GSourceFunc)gtk_frame_urgency_timer_callback, this);
1231         } else {
1232             m_urgency_hint = -1;
1233         }
1234     }
1235
1236 #if GTK_CHECK_VERSION(2,7,0)
1237     if(!gtk_check_version(2,7,0))
1238         gtk_window_set_urgency_hint(GTK_WINDOW( m_widget ), new_hint_value);
1239     else
1240 #endif
1241         wxgtk_window_set_urgency_hint(GTK_WINDOW( m_widget ), new_hint_value);
1242 }
1243
1244 void wxTopLevelWindowGTK::SetWindowStyleFlag( long style )
1245 {
1246 #if defined(__WXGTK24__) || GTK_CHECK_VERSION(2,2,0)
1247     // Store which styles were changed
1248     long styleChanges = style ^ m_windowStyle;
1249 #endif
1250
1251     // Process wxWindow styles. This also updates the internal variable
1252     // Therefore m_windowStyle bits carry now the _new_ style values
1253     wxWindow::SetWindowStyleFlag(style);
1254
1255     // just return for now if widget does not exist yet
1256     if (!m_widget)
1257         return;
1258
1259 #ifdef __WXGTK24__
1260     if ( (styleChanges & wxSTAY_ON_TOP) && !gtk_check_version(2,4,0) )
1261         gtk_window_set_keep_above(GTK_WINDOW(m_widget), m_windowStyle & wxSTAY_ON_TOP);
1262 #endif // GTK+ 2.4
1263 #if GTK_CHECK_VERSION(2,2,0)
1264     if ( (styleChanges & wxFRAME_NO_TASKBAR) && !gtk_check_version(2,2,0) )
1265     {
1266         gtk_window_set_skip_taskbar_hint(GTK_WINDOW(m_widget), m_windowStyle & wxFRAME_NO_TASKBAR);
1267     }
1268 #endif // GTK+ 2.2
1269 }
1270
1271 /* Get the X Window between child and the root window.
1272    This should usually be the WM managed XID */
1273 static Window wxGetTopmostWindowX11(Display *dpy, Window child)
1274 {
1275     Window root, parent;
1276     Window* children;
1277     unsigned int nchildren;
1278
1279     XQueryTree(dpy, child, &root, &parent, &children, &nchildren);
1280     XFree(children);
1281
1282     while (parent != root) {
1283         child = parent;
1284         XQueryTree(dpy, child, &root, &parent, &children, &nchildren);
1285         XFree(children);
1286     }
1287
1288     return child;
1289 }
1290
1291 bool wxTopLevelWindowGTK::SetTransparent(wxByte alpha)
1292 {
1293     if (!m_widget || !m_widget->window)
1294         return false;
1295
1296     Display* dpy = GDK_WINDOW_XDISPLAY (m_widget->window);
1297     // We need to get the X Window that has the root window as the immediate parent
1298     // and m_widget->window as a child. This should be the X Window that the WM manages and
1299     // from which the opacity property is checked from.
1300     Window win = wxGetTopmostWindowX11(dpy, GDK_WINDOW_XID (m_widget->window));
1301
1302
1303     // Using pure Xlib to not have a GTK version check mess due to gtk2.0 not having GdkDisplay
1304     if (alpha == 0xff)
1305         XDeleteProperty(dpy, win, XInternAtom(dpy, "_NET_WM_WINDOW_OPACITY", False));
1306     else
1307     {
1308         long opacity = alpha * 0x1010101L;
1309         XChangeProperty(dpy, win, XInternAtom(dpy, "_NET_WM_WINDOW_OPACITY", False),
1310                         XA_CARDINAL, 32, PropModeReplace,
1311                         (unsigned char *) &opacity, 1L);
1312     }
1313     XSync(dpy, False);
1314     return true;
1315 }
1316
1317 bool wxTopLevelWindowGTK::CanSetTransparent()
1318 {
1319     // allow to override automatic detection as it's far from perfect
1320     static const wxChar *SYSOPT_TRANSPARENT = wxT("gtk.tlw.can-set-transparent");
1321     if ( wxSystemOptions::HasOption(SYSOPT_TRANSPARENT) )
1322     {
1323         return wxSystemOptions::GetOptionInt(SYSOPT_TRANSPARENT) != 0;
1324     }
1325
1326 #if GTK_CHECK_VERSION(2,10,0)
1327     if (!gtk_check_version(2,10,0))
1328     {
1329         return (gtk_widget_is_composited (m_widget));
1330     }
1331     else
1332 #endif // In case of lower versions than gtk+-2.10.0 we could look for _NET_WM_CM_Sn ourselves
1333     {
1334         return false;
1335     }
1336
1337 #if 0 // Don't be optimistic here for the sake of wxAUI
1338     int opcode, event, error;
1339     // Check for the existence of a RGBA visual instead?
1340     return XQueryExtension(gdk_x11_get_default_xdisplay (),
1341                            "Composite", &opcode, &event, &error);
1342 #endif
1343 }