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 gboolean gtk_frame_focus_out_callback( GtkWidget *widget,
 171                                           GdkEventFocus *WXUNUSED(gdk_event),
 172                                           wxTopLevelWindowGTK *win )
 173 {
 174     // if the focus goes out of our app alltogether, OnIdle() will send
 175     // wxActivateEvent, otherwise gtk_window_focus_in_callback() will reset
 176     // g_sendActivateEvent to -1
 177     g_sendActivateEvent = 0;
 178
 179     // wxASSERT_MSG( (g_activeFrame == win), wxT("TLW deactivatd although it wasn't active") );
 180
 181     // wxPrintf( wxT("inactive: %s\n"), win->GetTitle().c_str() );
 182
 183     if (g_activeFrame)
 184     {
 185         wxLogTrace(wxT("activate"), wxT("Activating frame %p (from focus_in)"), g_activeFrame);
 186         wxActivateEvent event(wxEVT_ACTIVATE, false, g_activeFrame->GetId());
 187         event.SetEventObject(g_activeFrame);
 188         g_activeFrame->GetEventHandler()->ProcessEvent(event);
 189
 190         g_activeFrame = NULL;
 191     }
 192
 193     return FALSE;
 194 }
 195 }
 196
 197 //-----------------------------------------------------------------------------
 198 // "size_allocate"
 199 //-----------------------------------------------------------------------------
 200
 201 extern "C" {
 202 static void gtk_frame_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxTopLevelWindowGTK *win )
 203 {
 204     if (!win->m_hasVMT)
 205         return;
 206
 207     if ((win->m_width != alloc->width) || (win->m_height != alloc->height))
 208     {
 209 /*
 210         wxPrintf( wxT("gtk_frame_size_callback from ") );
 211         if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
 212            wxPrintf( win->GetClassInfo()->GetClassName() );
 213         wxPrintf( wxT(" %d %d %d %d\n"), (int)alloc->x,
 214                                 (int)alloc->y,
 215                                 (int)alloc->width,
 216                                 (int)alloc->height );
 217 */
 218
 219         // Tell the wxWindow class about the new size
 220         win->m_width = alloc->width;
 221         win->m_height = alloc->height;
 222
 223         win->GtkUpdateSize();
 224     }
 225 }
 226 }
 227
 228 // ----------------------------------------------------------------------------
 229 // "size_request"
 230 // ----------------------------------------------------------------------------
 231
 232 extern "C" {
 233 void wxgtk_tlw_size_request_callback(GtkWidget * WXUNUSED(widget),
 234                                      GtkRequisition *requisition,
 235                                      wxTopLevelWindowGTK *win)
 236 {
 237     // we must return the size of the window without WM decorations, otherwise
 238     // GTK+ gets confused, so don't call just GetSize() here
 239     int w, h;
 240     win->GTKDoGetSize(&w, &h);
 241
 242     requisition->height = h;
 243     requisition->width = w;
 244 }
 245 }
 246 //-----------------------------------------------------------------------------
 247 // "delete_event"
 248 //-----------------------------------------------------------------------------
 249
 250 extern "C" {
 251 static gboolean
 252 gtk_frame_delete_callback( GtkWidget *WXUNUSED(widget),
 253                            GdkEvent *WXUNUSED(event),
 254                            wxTopLevelWindowGTK *win )
 255 {
 256     if (win->IsEnabled() &&
 257         (g_openDialogs == 0 || (win->GetExtraStyle() & wxTOPLEVEL_EX_DIALOG) ||
 258          win->IsGrabbed()))
 259         win->Close();
 260
 261     return TRUE;
 262 }
 263 }
 264
 265
 266 //-----------------------------------------------------------------------------
 267 // "configure_event"
 268 //-----------------------------------------------------------------------------
 269
 270 extern "C" {
 271 static gboolean
 272 gtk_frame_configure_callback( GtkWidget *WXUNUSED(widget),
 273                               GdkEventConfigure *WXUNUSED(event),
 274                               wxTopLevelWindowGTK *win )
 275 {
 276     if (!win->m_hasVMT || !win->IsShown())
 277         return FALSE;
 278
 279
 280     int x = 0;
 281     int y = 0;
 282     gdk_window_get_root_origin( win->m_widget->window, &x, &y );
 283     win->m_x = x;
 284     win->m_y = y;
 285
 286     wxMoveEvent mevent( wxPoint(win->m_x,win->m_y), win->GetId() );
 287     mevent.SetEventObject( win );
 288     win->GetEventHandler()->ProcessEvent( mevent );
 289
 290     return FALSE;
 291 }
 292 }
 293
 294 //-----------------------------------------------------------------------------
 295 // "realize" from m_widget
 296 //-----------------------------------------------------------------------------
 297
 298 // we cannot MWM hints and icons before the widget has been realized,
 299 // so we do this directly after realization
 300
 301 extern "C" {
 302 static void
 303 gtk_frame_realized_callback( GtkWidget * WXUNUSED(widget),
 304                              wxTopLevelWindowGTK *win )
 305 {
 306     // All this is for Motif Window Manager "hints" and is supposed to be
 307     // recognized by other WM as well. Not tested.
 308     gdk_window_set_decorations(win->m_widget->window,
 309                                (GdkWMDecoration)win->m_gdkDecor);
 310     gdk_window_set_functions(win->m_widget->window,
 311                                (GdkWMFunction)win->m_gdkFunc);
 312
 313     // GTK's shrinking/growing policy
 314     if ((win->m_gdkFunc & GDK_FUNC_RESIZE) == 0)
 315         gtk_window_set_resizable(GTK_WINDOW(win->m_widget), FALSE);
 316     else
 317         gtk_window_set_policy(GTK_WINDOW(win->m_widget), 1, 1, 1);
 318
 319     // reset the icon
 320     wxIconBundle iconsOld = win->GetIcons();
 321     if ( !iconsOld.IsEmpty() )
 322     {
 323         win->SetIcon( wxNullIcon );
 324         win->SetIcons( iconsOld );
 325     }
 326 }
 327 }
 328
 329 //-----------------------------------------------------------------------------
 330 // "map_event" from m_widget
 331 //-----------------------------------------------------------------------------
 332
 333 extern "C" {
 334 static void
 335 gtk_frame_map_callback( GtkWidget * WXUNUSED(widget),
 336                         GdkEvent * WXUNUSED(event),
 337                         wxTopLevelWindow *win )
 338 {
 339     win->SetIconizeState(false);
 340 }
 341 }
 342
 343 //-----------------------------------------------------------------------------
 344 // "unmap_event" from m_widget
 345 //-----------------------------------------------------------------------------
 346
 347 extern "C" {
 348 static void
 349 gtk_frame_unmap_callback( GtkWidget * WXUNUSED(widget),
 350                           GdkEvent * WXUNUSED(event),
 351                           wxTopLevelWindow *win )
 352 {
 353     win->SetIconizeState(true);
 354 }
 355 }
 356
 357 //-----------------------------------------------------------------------------
 358 // "expose_event" of m_client
 359 //-----------------------------------------------------------------------------
 360
 361 extern "C" {
 362 static gboolean
 363 gtk_window_expose_callback( GtkWidget *widget,
 364                             GdkEventExpose *gdk_event,
 365                             wxWindow *win )
 366 {
 367     GtkPizza *pizza = GTK_PIZZA(widget);
 368
 369     gtk_paint_flat_box (win->m_widget->style,
 370                         pizza->bin_window, GTK_STATE_NORMAL,
 371                         GTK_SHADOW_NONE,
 372                         &gdk_event->area,
 373                         win->m_widget,
 374                         (char *)"base",
 375                         0, 0, -1, -1);
 376
 377     return FALSE;
 378 }
 379 }
 380
 381 // ----------------------------------------------------------------------------
 382 // wxTopLevelWindowGTK itself
 383 // ----------------------------------------------------------------------------
 384
 385 //-----------------------------------------------------------------------------
 386 // InsertChild for wxTopLevelWindowGTK
 387 //-----------------------------------------------------------------------------
 388
 389 /* Callback for wxTopLevelWindowGTK. This very strange beast has to be used because
 390  * C++ has no virtual methods in a constructor. We have to emulate a
 391  * virtual function here as wxWidgets requires different ways to insert
 392  * a child in container classes. */
 393
 394 static void wxInsertChildInTopLevelWindow( wxTopLevelWindowGTK* parent, wxWindow* child )
 395 {
 396     wxASSERT( GTK_IS_WIDGET(child->m_widget) );
 397
 398     if (!parent->m_insertInClientArea)
 399     {
 400         // these are outside the client area
 401         wxTopLevelWindowGTK* frame = (wxTopLevelWindowGTK*) parent;
 402         gtk_pizza_put( GTK_PIZZA(frame->m_mainWidget),
 403                          child->m_widget,
 404                          child->m_x,
 405                          child->m_y,
 406                          child->m_width,
 407                          child->m_height );
 408     }
 409     else
 410     {
 411         // these are inside the client area
 412         gtk_pizza_put( GTK_PIZZA(parent->m_wxwindow),
 413                          child->m_widget,
 414                          child->m_x,
 415                          child->m_y,
 416                          child->m_width,
 417                          child->m_height );
 418     }
 419 }
 420
 421 // ----------------------------------------------------------------------------
 422 // wxTopLevelWindowGTK creation
 423 // ----------------------------------------------------------------------------
 424
 425 void wxTopLevelWindowGTK::Init()
 426 {
 427     m_sizeSet = false;
 428     m_miniEdge = 0;
 429     m_miniTitle = 0;
 430     m_mainWidget = (GtkWidget*) NULL;
 431     m_insertInClientArea = true;
 432     m_isIconized = false;
 433     m_fsIsShowing = false;
 434     m_fsSaveFlag = 0;
 435     m_themeEnabled = true;
 436     m_gdkDecor = m_gdkFunc = 0;
 437     m_grabbed = false;
 438
 439     m_urgency_hint = -2;
 440 }
 441
 442 bool wxTopLevelWindowGTK::Create( wxWindow *parent,
 443                                   wxWindowID id,
 444                                   const wxString& title,
 445                                   const wxPoint& pos,
 446                                   const wxSize& sizeOrig,
 447                                   long style,
 448                                   const wxString &name )
 449 {
 450     // always create a frame of some reasonable, even if arbitrary, size (at
 451     // least for MSW compatibility)
 452     wxSize size = sizeOrig;
 453     size.x = WidthDefault(size.x);
 454     size.y = HeightDefault(size.y);
 455
 456     wxTopLevelWindows.Append( this );
 457
 458     m_needParent = false;
 459
 460     if (!PreCreation( parent, pos, size ) ||
 461         !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
 462     {
 463         wxFAIL_MSG( wxT("wxTopLevelWindowGTK creation failed") );
 464         return false;
 465     }
 466
 467     m_title = title;
 468
 469     m_insertCallback = (wxInsertChildFunction) wxInsertChildInTopLevelWindow;
 470
 471     // NB: m_widget may be !=NULL if it was created by derived class' Create,
 472     //     e.g. in wxTaskBarIconAreaGTK
 473     if (m_widget == NULL)
 474     {
 475         if (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)
 476         {
 477             m_widget = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 478             // Tell WM that this is a dialog window and make it center
 479             // on parent by default (this is what GtkDialog ctor does):
 480             gtk_window_set_type_hint(GTK_WINDOW(m_widget),
 481                                      GDK_WINDOW_TYPE_HINT_DIALOG);
 482             gtk_window_set_position(GTK_WINDOW(m_widget),
 483                                     GTK_WIN_POS_CENTER_ON_PARENT);
 484         }
 485         else
 486         {
 487             m_widget = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 488 #if GTK_CHECK_VERSION(2,1,0)
 489             if (!gtk_check_version(2,1,0))
 490             {
 491                 if (style & wxFRAME_TOOL_WINDOW)
 492                 {
 493                     gtk_window_set_type_hint(GTK_WINDOW(m_widget),
 494                                              GDK_WINDOW_TYPE_HINT_UTILITY);
 495
 496                     // On some WMs, like KDE, a TOOL_WINDOW will still show
 497                     // on the taskbar, but on Gnome a TOOL_WINDOW will not.
 498                     // For consistency between WMs and with Windows, we
 499                     // should set the NO_TASKBAR flag which will apply
 500                     // the set_skip_taskbar_hint if it is available,
 501                     // ensuring no taskbar entry will appear.
 502                     style |= wxFRAME_NO_TASKBAR;
 503                 }
 504             }
 505 #endif
 506         }
 507     }
 508
 509     wxWindow *topParent = wxGetTopLevelParent(m_parent);
 510     if (topParent && (((GTK_IS_WINDOW(topParent->m_widget)) &&
 511                        (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)) ||
 512                        (style & wxFRAME_FLOAT_ON_PARENT)))
 513     {
 514         gtk_window_set_transient_for( GTK_WINDOW(m_widget),
 515                                       GTK_WINDOW(topParent->m_widget) );
 516     }
 517
 518 #if GTK_CHECK_VERSION(2,2,0)
 519     if (!gtk_check_version(2,2,0))
 520     {
 521         if (style & wxFRAME_NO_TASKBAR)
 522         {
 523             gtk_window_set_skip_taskbar_hint(GTK_WINDOW(m_widget), TRUE);
 524         }
 525     }
 526 #endif
 527
 528 #ifdef __WXGTK24__
 529     if (!gtk_check_version(2,4,0))
 530     {
 531         if (style & wxSTAY_ON_TOP)
 532         {
 533             gtk_window_set_keep_above(GTK_WINDOW(m_widget), TRUE);
 534         }
 535     }
 536 #endif
 537
 538 #if 0
 539     if (!name.empty())
 540         gtk_window_set_role( GTK_WINDOW(m_widget), wxGTK_CONV( name ) );
 541 #endif
 542
 543     gtk_window_set_title( GTK_WINDOW(m_widget), wxGTK_CONV( title ) );
 544     GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 545
 546     g_signal_connect (m_widget, "delete_event",
 547                       G_CALLBACK (gtk_frame_delete_callback), this);
 548
 549     // m_mainWidget holds the toolbar, the menubar and the client area
 550     m_mainWidget = gtk_pizza_new();
 551     gtk_widget_show( m_mainWidget );
 552     GTK_WIDGET_UNSET_FLAGS( m_mainWidget, GTK_CAN_FOCUS );
 553     gtk_container_add( GTK_CONTAINER(m_widget), m_mainWidget );
 554
 555     if (m_miniEdge == 0) // wxMiniFrame has its own version.
 556     {
 557        // For m_mainWidget themes
 558        g_signal_connect (m_mainWidget, "expose_event",
 559                          G_CALLBACK (gtk_window_expose_callback), this);
 560     }
 561
 562     // m_wxwindow only represents the client area without toolbar and menubar
 563     m_wxwindow = gtk_pizza_new();
 564     gtk_widget_show( m_wxwindow );
 565     gtk_container_add( GTK_CONTAINER(m_mainWidget), m_wxwindow );
 566
 567     // we donm't allow the frame to get the focus as otherwise
 568     // the frame will grab it at arbitrary focus changes
 569     GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
 570
 571     if (m_parent) m_parent->AddChild( this );
 572
 573     // the user resized the frame by dragging etc.
 574     g_signal_connect (m_widget, "size_allocate",
 575                       G_CALLBACK (gtk_frame_size_callback), this);
 576
 577     g_signal_connect (m_widget, "size_request",
 578                       G_CALLBACK (wxgtk_tlw_size_request_callback), this);
 579     PostCreation();
 580
 581     if ((m_x != -1) || (m_y != -1))
 582         gtk_widget_set_uposition( m_widget, m_x, m_y );
 583
 584     gtk_window_set_default_size( GTK_WINDOW(m_widget), m_width, m_height );
 585
 586     //  we cannot set MWM hints and icons before the widget has
 587     //  been realized, so we do this directly after realization
 588     g_signal_connect (m_widget, "realize",
 589                       G_CALLBACK (gtk_frame_realized_callback), this);
 590
 591     // map and unmap for iconized state
 592     g_signal_connect (m_widget, "map_event",
 593                       G_CALLBACK (gtk_frame_map_callback), this);
 594     g_signal_connect (m_widget, "unmap_event",
 595                       G_CALLBACK (gtk_frame_unmap_callback), this);
 596
 597     // the only way to get the window size is to connect to this event
 598     g_signal_connect (m_widget, "configure_event",
 599                       G_CALLBACK (gtk_frame_configure_callback), this);
 600
 601     // activation
 602     g_signal_connect_after (m_widget, "focus_in_event",
 603                       G_CALLBACK (gtk_frame_focus_in_callback), this);
 604     g_signal_connect_after (m_widget, "focus_out_event",
 605                       G_CALLBACK (gtk_frame_focus_out_callback), this);
 606
 607     // decorations
 608     if ((style & wxSIMPLE_BORDER) || (style & wxNO_BORDER))
 609     {
 610         m_gdkDecor = 0;
 611         m_gdkFunc = 0;
 612     }
 613     else
 614     if (m_miniEdge > 0)
 615     {
 616         m_gdkDecor = 0;
 617         m_gdkFunc = 0;
 618
 619         if ((style & wxRESIZE_BORDER) != 0)
 620            m_gdkFunc |= GDK_FUNC_RESIZE;
 621     }
 622     else
 623     {
 624         m_gdkDecor = (long) GDK_DECOR_BORDER;
 625         m_gdkFunc = (long) GDK_FUNC_MOVE;
 626
 627         // All this is for Motif Window Manager "hints" and is supposed to be
 628         // recognized by other WMs as well.
 629         if ((style & wxCAPTION) != 0)
 630         {
 631             m_gdkDecor |= GDK_DECOR_TITLE;
 632         }
 633         if ((style & wxCLOSE_BOX) != 0)
 634         {
 635             m_gdkFunc |= GDK_FUNC_CLOSE;
 636         }
 637         if ((style & wxSYSTEM_MENU) != 0)
 638         {
 639             m_gdkDecor |= GDK_DECOR_MENU;
 640         }
 641         if ((style & wxMINIMIZE_BOX) != 0)
 642         {
 643             m_gdkFunc |= GDK_FUNC_MINIMIZE;
 644             m_gdkDecor |= GDK_DECOR_MINIMIZE;
 645         }
 646         if ((style & wxMAXIMIZE_BOX) != 0)
 647         {
 648             m_gdkFunc |= GDK_FUNC_MAXIMIZE;
 649             m_gdkDecor |= GDK_DECOR_MAXIMIZE;
 650         }
 651         if ((style & wxRESIZE_BORDER) != 0)
 652         {
 653            m_gdkFunc |= GDK_FUNC_RESIZE;
 654            m_gdkDecor |= GDK_DECOR_RESIZEH;
 655         }
 656     }
 657
 658     return true;
 659 }
 660
 661 wxTopLevelWindowGTK::~wxTopLevelWindowGTK()
 662 {
 663     if (m_grabbed)
 664     {
 665         wxFAIL_MSG(_T("Window still grabbed"));
 666         RemoveGrab();
 667     }
 668
 669     m_isBeingDeleted = true;
 670
 671     // it may also be GtkScrolledWindow in the case of an MDI child
 672     if (GTK_IS_WINDOW(m_widget))
 673     {
 674         gtk_window_set_focus( GTK_WINDOW(m_widget), NULL );
 675     }
 676
 677     if (g_activeFrame == this)
 678         g_activeFrame = NULL;
 679     if (g_lastActiveFrame == this)
 680         g_lastActiveFrame = NULL;
 681 }
 682
 683 bool wxTopLevelWindowGTK::EnableCloseButton( bool enable )
 684 {
 685     if (enable)
 686         m_gdkFunc |= GDK_FUNC_CLOSE;
 687     else
 688         m_gdkFunc &= ~GDK_FUNC_CLOSE;
 689
 690     if (GTK_WIDGET_REALIZED(m_widget) && (m_widget->window))
 691         gdk_window_set_functions( m_widget->window, (GdkWMFunction)m_gdkFunc );
 692
 693     return true;
 694 }
 695
 696 bool wxTopLevelWindowGTK::ShowFullScreen(bool show, long style )
 697 {
 698     if (show == m_fsIsShowing)
 699         return false; // return what?
 700
 701     m_fsIsShowing = show;
 702
 703     wxX11FullScreenMethod method =
 704         wxGetFullScreenMethodX11((WXDisplay*)GDK_DISPLAY(),
 705                                  (WXWindow)GDK_ROOT_WINDOW());
 706
 707 #if GTK_CHECK_VERSION(2,2,0)
 708     // NB: gtk_window_fullscreen() uses freedesktop.org's WMspec extensions
 709     //     to switch to fullscreen, which is not always available. We must
 710     //     check if WM supports the spec and use legacy methods if it
 711     //     doesn't.
 712     if ( (method == wxX11_FS_WMSPEC) && !gtk_check_version(2,2,0) )
 713     {
 714         if (show)
 715         {
 716             m_fsSaveFlag = style;
 717             gtk_window_fullscreen( GTK_WINDOW( m_widget ) );
 718         }
 719         else
 720         {
 721             m_fsSaveFlag = 0;
 722             gtk_window_unfullscreen( GTK_WINDOW( m_widget ) );
 723         }
 724     }
 725     else
 726 #endif // GTK+ >= 2.2.0
 727     {
 728         GdkWindow *window = m_widget->window;
 729
 730         if (show)
 731         {
 732             m_fsSaveFlag = style;
 733             GetPosition( &m_fsSaveFrame.x, &m_fsSaveFrame.y );
 734             GetSize( &m_fsSaveFrame.width, &m_fsSaveFrame.height );
 735
 736             int screen_width,screen_height;
 737             wxDisplaySize( &screen_width, &screen_height );
 738
 739             gint client_x, client_y, root_x, root_y;
 740             gint width, height;
 741
 742             if (method != wxX11_FS_WMSPEC)
 743             {
 744                 // don't do it always, Metacity hates it
 745                 m_fsSaveGdkFunc = m_gdkFunc;
 746                 m_fsSaveGdkDecor = m_gdkDecor;
 747                 m_gdkFunc = m_gdkDecor = 0;
 748                 gdk_window_set_decorations(window, (GdkWMDecoration)0);
 749                 gdk_window_set_functions(window, (GdkWMFunction)0);
 750             }
 751
 752             gdk_window_get_origin (m_widget->window, &root_x, &root_y);
 753             gdk_window_get_geometry (m_widget->window, &client_x, &client_y,
 754                          &width, &height, NULL);
 755
 756             gdk_window_move_resize (m_widget->window, -client_x, -client_y,
 757                         screen_width + 1, screen_height + 1);
 758
 759             wxSetFullScreenStateX11((WXDisplay*)GDK_DISPLAY(),
 760                                     (WXWindow)GDK_ROOT_WINDOW(),
 761                                     (WXWindow)GDK_WINDOW_XWINDOW(window),
 762                                     show, &m_fsSaveFrame, method);
 763         }
 764         else // hide
 765         {
 766             m_fsSaveFlag = 0;
 767             if (method != wxX11_FS_WMSPEC)
 768             {
 769                 // don't do it always, Metacity hates it
 770                 m_gdkFunc = m_fsSaveGdkFunc;
 771                 m_gdkDecor = m_fsSaveGdkDecor;
 772                 gdk_window_set_decorations(window, (GdkWMDecoration)m_gdkDecor);
 773                 gdk_window_set_functions(window, (GdkWMFunction)m_gdkFunc);
 774             }
 775
 776             wxSetFullScreenStateX11((WXDisplay*)GDK_DISPLAY(),
 777                                     (WXWindow)GDK_ROOT_WINDOW(),
 778                                     (WXWindow)GDK_WINDOW_XWINDOW(window),
 779                                     show, &m_fsSaveFrame, method);
 780
 781             SetSize(m_fsSaveFrame.x, m_fsSaveFrame.y,
 782                     m_fsSaveFrame.width, m_fsSaveFrame.height);
 783         }
 784     }
 785
 786     // documented behaviour is to show the window if it's still hidden when
 787     // showing it full screen
 788     if ( show && !IsShown() )
 789         Show();
 790
 791     return true;
 792 }
 793
 794 // ----------------------------------------------------------------------------
 795 // overridden wxWindow methods
 796 // ----------------------------------------------------------------------------
 797
 798 bool wxTopLevelWindowGTK::Show( bool show )
 799 {
 800     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
 801
 802     if (show == IsShown())
 803         return true;
 804
 805     if (show && !m_sizeSet)
 806     {
 807         /* by calling GtkOnSize here, we don't have to call
 808            either after showing the frame, which would entail
 809            much ugly flicker or from within the size_allocate
 810            handler, because GTK 1.1.X forbids that. */
 811
 812         GtkOnSize();
 813     }
 814
 815     // This seems no longer to be needed and the call
 816     // itself is deprecated.
 817     //
 818     //if (show)
 819     //    gtk_widget_set_uposition( m_widget, m_x, m_y );
 820
 821     return wxWindow::Show( show );
 822 }
 823
 824 void wxTopLevelWindowGTK::Raise()
 825 {
 826     gtk_window_present( GTK_WINDOW( m_widget ) );
 827 }
 828
 829 void wxTopLevelWindowGTK::DoMoveWindow(int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(width), int WXUNUSED(height) )
 830 {
 831     wxFAIL_MSG( wxT("DoMoveWindow called for wxTopLevelWindowGTK") );
 832 }
 833
 834 // ----------------------------------------------------------------------------
 835 // window geometry
 836 // ----------------------------------------------------------------------------
 837
 838 void wxTopLevelWindowGTK::GTKDoGetSize(int *width, int *height) const
 839 {
 840     return wxTopLevelWindowBase::DoGetSize(width, height);
 841 }
 842
 843 void wxTopLevelWindowGTK::GTKDoSetSize(int width, int height)
 844 {
 845     // avoid recursions
 846     if (m_resizing)
 847         return;
 848     m_resizing = true;
 849
 850     int old_width = m_width;
 851     int old_height = m_height;
 852
 853     if ( width != -1 )
 854         m_width = width;
 855     if ( height != -1 )
 856         m_height = height;
 857
 858     // GPE's window manager doesn't like size hints at all, esp. when the user
 859     // has to use the virtual keyboard, so don't constrain size there
 860 #ifndef __WXGPE__
 861     int minWidth = GetMinWidth(),
 862         minHeight = GetMinHeight(),
 863         maxWidth = GetMaxWidth(),
 864         maxHeight = GetMaxHeight();
 865
 866     if ( minWidth != -1 && m_width < minWidth )
 867         m_width = minWidth;
 868     if ( minHeight != -1 && m_height < minHeight )
 869         m_height = minHeight;
 870     if ( maxWidth != -1 && m_width > maxWidth )
 871         m_width = maxWidth;
 872     if ( maxHeight != -1 && m_height > maxHeight )
 873         m_height = maxHeight;
 874 #endif // __WXGPE__
 875
 876     if ( m_width != old_width || m_height != old_height )
 877     {
 878         gtk_window_resize( GTK_WINDOW(m_widget), m_width, m_height );
 879
 880         /* we set the size in GtkOnSize, i.e. mostly the actual resizing is
 881            done either directly before the frame is shown or in idle time
 882            so that different calls to SetSize() don't lead to flicker. */
 883         m_sizeSet = false;
 884     }
 885
 886     m_resizing = false;
 887 }
 888
 889 void wxTopLevelWindowGTK::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 890 {
 891     wxCHECK_RET( m_widget, wxT("invalid frame") );
 892
 893     // this shouldn't happen: wxFrame, wxMDIParentFrame and wxMDIChildFrame have m_wxwindow
 894     wxASSERT_MSG( (m_wxwindow != NULL), wxT("invalid frame") );
 895
 896
 897     // deal with the position first
 898     int old_x = m_x;
 899     int old_y = m_y;
 900
 901     if ( !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE) )
 902     {
 903         // -1 means "use existing" unless the flag above is specified
 904         if ( x != -1 )
 905             m_x = x;
 906         if ( y != -1 )
 907             m_y = y;
 908     }
 909     else // wxSIZE_ALLOW_MINUS_ONE
 910     {
 911         m_x = x;
 912         m_y = y;
 913     }
 914
 915     if ( m_x != old_x || m_y != old_y )
 916     {
 917         gtk_window_move( GTK_WINDOW(m_widget), m_x, m_y );
 918     }
 919
 920
 921     // and now change the size: as we want to set the size of the entire
 922     // window, including decorations, we must adjust the size passed to
 923     // GTKDoSetSize() which takes with the size of undecorated frame only
 924     if ( width != -1 || height != -1 )
 925     {
 926         int wTotal,
 927             hTotal;
 928         DoGetSize(&wTotal, &hTotal);
 929
 930         int wUndec,
 931             hUndec;
 932         GTKDoGetSize(&wUndec, &hUndec);
 933
 934         if ( width != -1 )
 935             width -= wTotal - wUndec;
 936         if ( height != -1 )
 937             height -= hTotal - hUndec;
 938     }
 939
 940     GTKDoSetSize(width, height);
 941 }
 942
 943 void wxTopLevelWindowGTK::DoGetSize(int *width, int *height) const
 944 {
 945     wxCHECK_RET( m_widget, wxT("invalid frame") );
 946
 947     if ( !m_widget->window )
 948     {
 949         // this can happen if we're called before the window is realized, so
 950         // don't assert but just return the stored values
 951         GTKDoGetSize(width, height);
 952         return;
 953     }
 954
 955     GdkRectangle rect;
 956     gdk_window_get_frame_extents(m_widget->window, &rect);
 957
 958     if ( width )
 959         *width = rect.width;
 960     if ( height )
 961         *height = rect.height;
 962 }
 963
 964 void wxTopLevelWindowGTK::DoGetClientSize( int *width, int *height ) const
 965 {
 966     if ( IsIconized() )
 967     {
 968         // for consistency with wxMSW, client area is supposed to be empty for
 969         // the iconized windows
 970         if ( width )
 971             *width = 0;
 972         if ( height )
 973             *height = 0;
 974
 975         return;
 976     }
 977
 978     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
 979
 980     if (height)
 981     {
 982         *height = m_height - 2 * m_miniEdge - m_miniTitle;
 983         if (*height < 0)
 984             *height = 0;
 985     }
 986     if (width)
 987     {
 988         *width = m_width - 2 * m_miniEdge;
 989         if (*width < 0)
 990             *width = 0;
 991     }
 992 }
 993
 994 void wxTopLevelWindowGTK::DoSetClientSize( int width, int height )
 995 {
 996     GTKDoSetSize(width + m_miniEdge*2, height  + m_miniEdge*2 + m_miniTitle);
 997 }
 998
 999 void wxTopLevelWindowGTK::DoSetSizeHints( int minW, int minH,
1000                                           int maxW, int maxH,
1001                                           int incW, int incH )
1002 {
1003     wxTopLevelWindowBase::DoSetSizeHints( minW, minH, maxW, maxH, incW, incH );
1004
1005     const wxSize minSize = GetMinSize();
1006     const wxSize maxSize = GetMaxSize();
1007     GdkGeometry hints;
1008     int hints_mask = 0;
1009     if (minSize.x > 0 || minSize.y > 0)
1010     {
1011         hints_mask |= GDK_HINT_MIN_SIZE;
1012         hints.min_width  = minSize.x > 0 ? minSize.x : 0;
1013         hints.min_height = minSize.y > 0 ? minSize.y : 0;
1014     }
1015     if (maxSize.x > 0 || maxSize.y > 0)
1016     {
1017         hints_mask |= GDK_HINT_MAX_SIZE;
1018         hints.max_width  = maxSize.x > 0 ? maxSize.x : INT_MAX;
1019         hints.max_height = maxSize.y > 0 ? maxSize.y : INT_MAX;
1020     }
1021     if (incW > 0 || incH > 0)
1022     {
1023         hints_mask |= GDK_HINT_RESIZE_INC;
1024         hints.width_inc  = incW > 0 ? incW : 1;
1025         hints.height_inc = incH > 0 ? incH : 1;
1026     }
1027     gtk_window_set_geometry_hints(
1028         (GtkWindow*)m_widget, NULL, &hints, (GdkWindowHints)hints_mask);
1029 }
1030
1031
1032 void wxTopLevelWindowGTK::GtkOnSize()
1033 {
1034     // avoid recursions
1035     if (m_resizing) return;
1036     m_resizing = true;
1037
1038     if ( m_wxwindow == NULL ) return;
1039
1040     /* wxMDIChildFrame derives from wxFrame but it _is_ a wxWindow as it uses
1041        wxWindow::Create to create it's GTK equivalent. m_mainWidget is only
1042        set in wxFrame::Create so it is used to check what kind of frame we
1043        have here. if m_mainWidget is NULL it is a wxMDIChildFrame and so we
1044        skip the part which handles m_frameMenuBar, m_frameToolBar and (most
1045        importantly) m_mainWidget */
1046
1047     int minWidth = GetMinWidth(),
1048         minHeight = GetMinHeight(),
1049         maxWidth = GetMaxWidth(),
1050         maxHeight = GetMaxHeight();
1051
1052 #ifdef __WXGPE__
1053     // GPE's window manager doesn't like size hints
1054     // at all, esp. when the user has to use the
1055     // virtual keyboard.
1056     minWidth = -1;
1057     minHeight = -1;
1058     maxWidth = -1;
1059     maxHeight = -1;
1060 #endif
1061
1062     if ((minWidth != -1) && (m_width < minWidth)) m_width = minWidth;
1063     if ((minHeight != -1) && (m_height < minHeight)) m_height = minHeight;
1064     if ((maxWidth != -1) && (m_width > maxWidth)) m_width = maxWidth;
1065     if ((maxHeight != -1) && (m_height > maxHeight)) m_height = maxHeight;
1066
1067     if (m_mainWidget)
1068     {
1069         // m_mainWidget holds the menubar, the toolbar and the client area,
1070         // which is represented by m_wxwindow.
1071         int client_x = m_miniEdge;
1072         int client_y = m_miniEdge + m_miniTitle;
1073         int client_w = m_width - 2*m_miniEdge;
1074         int client_h = m_height - 2*m_miniEdge - m_miniTitle;
1075         if (client_w < 0)
1076             client_w = 0;
1077         if (client_h < 0)
1078             client_h = 0;
1079
1080         // Let the parent perform the resize
1081         gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
1082                               m_wxwindow,
1083                               client_x, client_y, client_w, client_h );
1084     }
1085     else
1086     {
1087         // If there is no m_mainWidget between m_widget and m_wxwindow there
1088         // is no need to set the size or position of m_wxwindow.
1089     }
1090
1091     m_sizeSet = true;
1092
1093     // send size event to frame
1094     wxSizeEvent event( wxSize(m_width,m_height), GetId() );
1095     event.SetEventObject( this );
1096     GetEventHandler()->ProcessEvent( event );
1097
1098     m_resizing = false;
1099 }
1100
1101 void wxTopLevelWindowGTK::OnInternalIdle()
1102 {
1103     if (!m_sizeSet && GTK_WIDGET_REALIZED(m_wxwindow))
1104     {
1105         GtkOnSize();
1106
1107         // we'll come back later
1108         return;
1109     }
1110
1111     // set the focus if not done yet and if we can already do it
1112     if ( GTK_WIDGET_REALIZED(m_wxwindow) )
1113     {
1114         if ( g_delayedFocus &&
1115              wxGetTopLevelParent((wxWindow*)g_delayedFocus) == this )
1116         {
1117             wxLogTrace(_T("focus"),
1118                        _T("Setting focus from wxTLW::OnIdle() to %s(%s)"),
1119                        g_delayedFocus->GetClassInfo()->GetClassName(),
1120                        g_delayedFocus->GetLabel().c_str());
1121
1122             g_delayedFocus->SetFocus();
1123             g_delayedFocus = NULL;
1124         }
1125     }
1126
1127     wxWindow::OnInternalIdle();
1128
1129     // Synthetize activate events.
1130     if ( g_sendActivateEvent != -1 )
1131     {
1132         bool activate = g_sendActivateEvent != 0;
1133
1134         // if (!activate) wxPrintf( wxT("de") );
1135         // wxPrintf( wxT("activate\n") );
1136
1137         // do it only once
1138         g_sendActivateEvent = -1;
1139
1140         wxTheApp->SetActive(activate, (wxWindow *)g_lastActiveFrame);
1141     }
1142 }
1143
1144 // ----------------------------------------------------------------------------
1145 // frame title/icon
1146 // ----------------------------------------------------------------------------
1147
1148 void wxTopLevelWindowGTK::SetTitle( const wxString &title )
1149 {
1150     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
1151
1152     if ( title == m_title )
1153         return;
1154
1155     m_title = title;
1156
1157     gtk_window_set_title( GTK_WINDOW(m_widget), wxGTK_CONV( title ) );
1158 }
1159
1160 void wxTopLevelWindowGTK::SetIcons( const wxIconBundle &icons )
1161 {
1162     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
1163
1164     wxTopLevelWindowBase::SetIcons( icons );
1165
1166     GList *list = NULL;
1167
1168     const size_t numIcons = icons.GetIconCount();
1169     for ( size_t i = 0; i < numIcons; i++ )
1170     {
1171         list = g_list_prepend(list, icons.GetIconByIndex(i).GetPixbuf());
1172     }
1173
1174     gtk_window_set_icon_list(GTK_WINDOW(m_widget), list);
1175     g_list_free(list);
1176 }
1177
1178 // ----------------------------------------------------------------------------
1179 // frame state: maximized/iconized/normal
1180 // ----------------------------------------------------------------------------
1181
1182 void wxTopLevelWindowGTK::Maximize(bool maximize)
1183 {
1184     if (maximize)
1185         gtk_window_maximize( GTK_WINDOW( m_widget ) );
1186     else
1187         gtk_window_unmaximize( GTK_WINDOW( m_widget ) );
1188 }
1189
1190 bool wxTopLevelWindowGTK::IsMaximized() const
1191 {
1192     if(!m_widget->window)
1193         return false;
1194
1195     return gdk_window_get_state(m_widget->window) & GDK_WINDOW_STATE_MAXIMIZED;
1196 }
1197
1198 void wxTopLevelWindowGTK::Restore()
1199 {
1200     // "Present" seems similar enough to "restore"
1201     gtk_window_present( GTK_WINDOW( m_widget ) );
1202 }
1203
1204 void wxTopLevelWindowGTK::Iconize( bool iconize )
1205 {
1206     if (iconize)
1207         gtk_window_iconify( GTK_WINDOW( m_widget ) );
1208     else
1209         gtk_window_deiconify( GTK_WINDOW( m_widget ) );
1210 }
1211
1212 bool wxTopLevelWindowGTK::IsIconized() const
1213 {
1214     return m_isIconized;
1215 }
1216
1217 void wxTopLevelWindowGTK::SetIconizeState(bool iconize)
1218 {
1219     if ( iconize != m_isIconized )
1220     {
1221         m_isIconized = iconize;
1222         (void)SendIconizeEvent(iconize);
1223     }
1224 }
1225
1226 void wxTopLevelWindowGTK::AddGrab()
1227 {
1228     if (!m_grabbed)
1229     {
1230         m_grabbed = true;
1231         gtk_grab_add( m_widget );
1232         wxEventLoop().Run();
1233         gtk_grab_remove( m_widget );
1234     }
1235 }
1236
1237 void wxTopLevelWindowGTK::RemoveGrab()
1238 {
1239     if (m_grabbed)
1240     {
1241         gtk_main_quit();
1242         m_grabbed = false;
1243     }
1244 }
1245
1246
1247 // helper
1248 static bool do_shape_combine_region(GdkWindow* window, const wxRegion& region)
1249 {
1250     if (window)
1251     {
1252         if (region.IsEmpty())
1253         {
1254             gdk_window_shape_combine_mask(window, NULL, 0, 0);
1255         }
1256         else
1257         {
1258             gdk_window_shape_combine_region(window, region.GetRegion(), 0, 0);
1259             return true;
1260         }
1261     }
1262     return false;
1263 }
1264
1265
1266 bool wxTopLevelWindowGTK::SetShape(const wxRegion& region)
1267 {
1268     wxCHECK_MSG( HasFlag(wxFRAME_SHAPED), false,
1269                  _T("Shaped windows must be created with the wxFRAME_SHAPED style."));
1270
1271     GdkWindow *window = NULL;
1272     if (m_wxwindow)
1273     {
1274         window = GTK_PIZZA(m_wxwindow)->bin_window;
1275         do_shape_combine_region(window, region);
1276     }
1277     window = m_widget->window;
1278     return do_shape_combine_region(window, region);
1279 }
1280
1281 bool wxTopLevelWindowGTK::IsActive()
1282 {
1283     return (this == (wxTopLevelWindowGTK*)g_activeFrame);
1284 }
1285
1286 void wxTopLevelWindowGTK::RequestUserAttention(int flags)
1287 {
1288     bool new_hint_value = false;
1289
1290     // FIXME: This is a workaround to focus handling problem
1291     // If RequestUserAttention is called for example right after a wxSleep, OnInternalIdle hasn't
1292     // yet been processed, and the internal focus system is not up to date yet.
1293     // wxYieldIfNeeded ensures the processing of it, but can have unwanted side effects - MR
1294     ::wxYieldIfNeeded();
1295
1296     if(m_urgency_hint >= 0)
1297         g_source_remove(m_urgency_hint);
1298
1299     m_urgency_hint = -2;
1300
1301     if( GTK_WIDGET_REALIZED(m_widget) && !IsActive() )
1302     {
1303         new_hint_value = true;
1304
1305         if (flags & wxUSER_ATTENTION_INFO)
1306         {
1307             m_urgency_hint = g_timeout_add(5000, (GSourceFunc)gtk_frame_urgency_timer_callback, this);
1308         } else {
1309             m_urgency_hint = -1;
1310         }
1311     }
1312
1313 #if GTK_CHECK_VERSION(2,7,0)
1314     if(!gtk_check_version(2,7,0))
1315         gtk_window_set_urgency_hint(GTK_WINDOW( m_widget ), new_hint_value);
1316     else
1317 #endif
1318         wxgtk_window_set_urgency_hint(GTK_WINDOW( m_widget ), new_hint_value);
1319 }
1320
1321 void wxTopLevelWindowGTK::SetWindowStyleFlag( long style )
1322 {
1323 #if defined(__WXGTK24__) || GTK_CHECK_VERSION(2,2,0)
1324     // Store which styles were changed
1325     long styleChanges = style ^ m_windowStyle;
1326 #endif
1327
1328     // Process wxWindow styles. This also updates the internal variable
1329     // Therefore m_windowStyle bits carry now the _new_ style values
1330     wxWindow::SetWindowStyleFlag(style);
1331
1332     // just return for now if widget does not exist yet
1333     if (!m_widget)
1334         return;
1335
1336 #ifdef __WXGTK24__
1337     if ( (styleChanges & wxSTAY_ON_TOP) && !gtk_check_version(2,4,0) )
1338         gtk_window_set_keep_above(GTK_WINDOW(m_widget), m_windowStyle & wxSTAY_ON_TOP);
1339 #endif // GTK+ 2.4
1340 #if GTK_CHECK_VERSION(2,2,0)
1341     if ( (styleChanges & wxFRAME_NO_TASKBAR) && !gtk_check_version(2,2,0) )
1342     {
1343         gtk_window_set_skip_taskbar_hint(GTK_WINDOW(m_widget), m_windowStyle & wxFRAME_NO_TASKBAR);
1344     }
1345 #endif // GTK+ 2.2
1346 }
1347
1348 #include <X11/Xlib.h>
1349
1350 /* Get the X Window between child and the root window.
1351    This should usually be the WM managed XID */
1352 static Window wxGetTopmostWindowX11(Display *dpy, Window child)
1353 {
1354     Window root, parent;
1355     Window* children;
1356     unsigned int nchildren;
1357
1358     XQueryTree(dpy, child, &root, &parent, &children, &nchildren);
1359     XFree(children);
1360
1361     while (parent != root) {
1362         child = parent;
1363         XQueryTree(dpy, child, &root, &parent, &children, &nchildren);
1364         XFree(children);
1365     }
1366
1367     return child;
1368 }
1369
1370 bool wxTopLevelWindowGTK::SetTransparent(wxByte alpha)
1371 {
1372     if (!m_widget || !m_widget->window)
1373         return false;
1374
1375     Display* dpy = GDK_WINDOW_XDISPLAY (m_widget->window);
1376     // We need to get the X Window that has the root window as the immediate parent
1377     // and m_widget->window as a child. This should be the X Window that the WM manages and
1378     // from which the opacity property is checked from.
1379     Window win = wxGetTopmostWindowX11(dpy, GDK_WINDOW_XID (m_widget->window));
1380
1381     unsigned int opacity = alpha * 0x1010101;
1382
1383     // Using pure Xlib to not have a GTK version check mess due to gtk2.0 not having GdkDisplay
1384     if (alpha == 0xff)
1385         XDeleteProperty(dpy, win, XInternAtom(dpy, "_NET_WM_WINDOW_OPACITY", False));
1386     else
1387         XChangeProperty(dpy, win, XInternAtom(dpy, "_NET_WM_WINDOW_OPACITY", False),
1388                         XA_CARDINAL, 32, PropModeReplace,
1389                         (unsigned char *) &opacity, 1L);
1390     XSync(dpy, False);
1391     return true;
1392 }
1393
1394 bool wxTopLevelWindowGTK::CanSetTransparent()
1395 {
1396     // allow to override automatic detection as it's far from perfect
1397     static const wxChar *SYSOPT_TRANSPARENT = wxT("gtk.tlw.can-set-transparent");
1398     if ( wxSystemOptions::HasOption(SYSOPT_TRANSPARENT) )
1399     {
1400         return wxSystemOptions::GetOptionInt(SYSOPT_TRANSPARENT) != 0;
1401     }
1402
1403 #if GTK_CHECK_VERSION(2,10,0)
1404     if (!gtk_check_version(2,10,0))
1405     {
1406         return (gtk_widget_is_composited (m_widget));
1407     }
1408     else
1409 #endif // In case of lower versions than gtk+-2.10.0 we could look for _NET_WM_CM_Sn ourselves
1410     {
1411         return false;
1412     }
1413
1414 #if 0 // Don't be optimistic here for the sake of wxAUI
1415     int opcode, event, error;
1416     // Check for the existence of a RGBA visual instead?
1417     return XQueryExtension(gdk_x11_get_default_xdisplay (),
1418                            "Composite", &opcode, &event, &error);
1419 #endif
1420 }