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/private/win_gtk.h"
  42
  43 #include "wx/unix/utilsx11.h"
  44
  45 // XA_CARDINAL
  46 #include <X11/Xatom.h>
  47
  48 #if wxUSE_LIBHILDON
  49     #include <hildon-widgets/hildon-program.h>
  50     #include <hildon-widgets/hildon-window.h>
  51 #endif // wxUSE_LIBHILDON
  52
  53 // ----------------------------------------------------------------------------
  54 // data
  55 // ----------------------------------------------------------------------------
  56
  57 // this is incremented while a modal dialog is shown
  58 int wxOpenModalDialogsCount = 0;
  59
  60 // the frame that is currently active (i.e. its child has focus). It is
  61 // used to generate wxActivateEvents
  62 static wxTopLevelWindowGTK *g_activeFrame = NULL;
  63 static wxTopLevelWindowGTK *g_lastActiveFrame = NULL;
  64
  65 // if we detect that the app has got/lost the focus, we set this variable to
  66 // either TRUE or FALSE and an activate event will be sent during the next
  67 // OnIdle() call and it is reset to -1: this value means that we shouldn't
  68 // send any activate events at all
  69 static int g_sendActivateEvent = -1;
  70
  71 //-----------------------------------------------------------------------------
  72 // RequestUserAttention related functions
  73 //-----------------------------------------------------------------------------
  74
  75 extern "C" {
  76 static void wxgtk_window_set_urgency_hint (GtkWindow *win,
  77                                            gboolean setting)
  78 {
  79     wxASSERT_MSG( GTK_WIDGET_REALIZED(win), wxT("wxgtk_window_set_urgency_hint: GdkWindow not realized") );
  80     GdkWindow *window = GTK_WIDGET(win)->window;
  81     XWMHints *wm_hints;
  82
  83     wm_hints = XGetWMHints(GDK_WINDOW_XDISPLAY(window), GDK_WINDOW_XWINDOW(window));
  84
  85     if (!wm_hints)
  86         wm_hints = XAllocWMHints();
  87
  88     if (setting)
  89         wm_hints->flags |= XUrgencyHint;
  90     else
  91         wm_hints->flags &= ~XUrgencyHint;
  92
  93     XSetWMHints(GDK_WINDOW_XDISPLAY(window), GDK_WINDOW_XWINDOW(window), wm_hints);
  94     XFree(wm_hints);
  95 }
  96
  97 static gboolean gtk_frame_urgency_timer_callback( wxTopLevelWindowGTK *win )
  98 {
  99 #if GTK_CHECK_VERSION(2,7,0)
 100     if(!gtk_check_version(2,7,0))
 101         gtk_window_set_urgency_hint(GTK_WINDOW( win->m_widget ), FALSE);
 102     else
 103 #endif
 104         wxgtk_window_set_urgency_hint(GTK_WINDOW( win->m_widget ), FALSE);
 105
 106     win->m_urgency_hint = -2;
 107     return FALSE;
 108 }
 109 }
 110
 111 //-----------------------------------------------------------------------------
 112 // "focus_in_event"
 113 //-----------------------------------------------------------------------------
 114
 115 extern "C" {
 116 static gboolean gtk_frame_focus_in_callback( GtkWidget *widget,
 117                                          GdkEvent *WXUNUSED(event),
 118                                          wxTopLevelWindowGTK *win )
 119 {
 120     switch ( g_sendActivateEvent )
 121     {
 122         case -1:
 123             // we've got focus from outside, synthetize wxActivateEvent
 124             g_sendActivateEvent = 1;
 125             break;
 126
 127         case 0:
 128             // another our window just lost focus, it was already ours before
 129             // - don't send any wxActivateEvent
 130             g_sendActivateEvent = -1;
 131             break;
 132     }
 133
 134     g_activeFrame = win;
 135     g_lastActiveFrame = g_activeFrame;
 136
 137     // wxPrintf( wxT("active: %s\n"), win->GetTitle().c_str() );
 138
 139     // MR: wxRequestUserAttention related block
 140     switch( win->m_urgency_hint )
 141     {
 142         default:
 143             g_source_remove( win->m_urgency_hint );
 144             // no break, fallthrough to remove hint too
 145         case -1:
 146 #if GTK_CHECK_VERSION(2,7,0)
 147             if(!gtk_check_version(2,7,0))
 148                 gtk_window_set_urgency_hint(GTK_WINDOW( widget ), FALSE);
 149             else
 150 #endif
 151             {
 152                 wxgtk_window_set_urgency_hint(GTK_WINDOW( widget ), FALSE);
 153             }
 154
 155             win->m_urgency_hint = -2;
 156             break;
 157
 158         case -2: break;
 159     }
 160
 161     wxLogTrace(wxT("activate"), wxT("Activating frame %p (from focus_in)"), g_activeFrame);
 162     wxActivateEvent event(wxEVT_ACTIVATE, true, g_activeFrame->GetId());
 163     event.SetEventObject(g_activeFrame);
 164     g_activeFrame->HandleWindowEvent(event);
 165
 166     return FALSE;
 167 }
 168 }
 169
 170 //-----------------------------------------------------------------------------
 171 // "focus_out_event"
 172 //-----------------------------------------------------------------------------
 173
 174 extern "C" {
 175 static
 176 gboolean gtk_frame_focus_out_callback(GtkWidget * WXUNUSED(widget),
 177                                       GdkEventFocus *WXUNUSED(gdk_event),
 178                                       wxTopLevelWindowGTK * WXUNUSED(win))
 179 {
 180     // if the focus goes out of our app alltogether, OnIdle() will send
 181     // wxActivateEvent, otherwise gtk_window_focus_in_callback() will reset
 182     // g_sendActivateEvent to -1
 183     g_sendActivateEvent = 0;
 184
 185     // wxASSERT_MSG( (g_activeFrame == win), wxT("TLW deactivatd although it wasn't active") );
 186
 187     // wxPrintf( wxT("inactive: %s\n"), win->GetTitle().c_str() );
 188
 189     if (g_activeFrame)
 190     {
 191         wxLogTrace(wxT("activate"), wxT("Activating frame %p (from focus_in)"), g_activeFrame);
 192         wxActivateEvent event(wxEVT_ACTIVATE, false, g_activeFrame->GetId());
 193         event.SetEventObject(g_activeFrame);
 194         g_activeFrame->HandleWindowEvent(event);
 195
 196         g_activeFrame = NULL;
 197     }
 198
 199     return FALSE;
 200 }
 201 }
 202
 203 //-----------------------------------------------------------------------------
 204 // "size_allocate" from m_wxwindow
 205 //-----------------------------------------------------------------------------
 206
 207 extern "C" {
 208 static void
 209 size_allocate(GtkWidget*, GtkAllocation* alloc, wxTopLevelWindowGTK* win)
 210 {
 211     if (win->m_oldClientWidth  != alloc->width ||
 212         win->m_oldClientHeight != alloc->height)
 213     {
 214         win->m_oldClientWidth  = alloc->width;
 215         win->m_oldClientHeight = alloc->height;
 216
 217         wxSize size(win->m_widget->allocation.width,
 218                     win->m_widget->allocation.height);
 219         size += win->m_decorSize;
 220         win->m_width  = size.x;
 221         win->m_height = size.y;
 222
 223         if (!win->IsIconized())
 224         {
 225             wxSizeEvent event(size, win->GetId());
 226             event.SetEventObject(win);
 227             win->HandleWindowEvent(event);
 228         }
 229         // else the window is currently unmapped, don't generate size events
 230     }
 231 }
 232 }
 233
 234 // ----------------------------------------------------------------------------
 235 // "size_request"
 236 // ----------------------------------------------------------------------------
 237
 238 extern "C" {
 239 static
 240 void wxgtk_tlw_size_request_callback(GtkWidget * WXUNUSED(widget),
 241                                      GtkRequisition *requisition,
 242                                      wxTopLevelWindowGTK *win)
 243 {
 244     // we must return the size of the window without WM decorations, otherwise
 245     // GTK+ gets confused, so don't call just GetSize() here
 246     win->GTKDoGetSize(&requisition->width, &requisition->height);
 247 }
 248 }
 249
 250 //-----------------------------------------------------------------------------
 251 // "delete_event"
 252 //-----------------------------------------------------------------------------
 253
 254 extern "C" {
 255 static gboolean
 256 gtk_frame_delete_callback( GtkWidget *WXUNUSED(widget),
 257                            GdkEvent *WXUNUSED(event),
 258                            wxTopLevelWindowGTK *win )
 259 {
 260     if (win->IsEnabled() &&
 261         (wxOpenModalDialogsCount == 0 || (win->GetExtraStyle() & wxTOPLEVEL_EX_DIALOG) ||
 262          win->IsGrabbed()))
 263         win->Close();
 264
 265     return TRUE;
 266 }
 267 }
 268
 269 //-----------------------------------------------------------------------------
 270 // "configure_event"
 271 //-----------------------------------------------------------------------------
 272
 273 extern "C" {
 274 static gboolean
 275 gtk_frame_configure_callback( GtkWidget* widget,
 276                               GdkEventConfigure *WXUNUSED(event),
 277                               wxTopLevelWindowGTK *win )
 278 {
 279     if (!win->m_hasVMT || !win->IsShown())
 280         return FALSE;
 281
 282     wxPoint point;
 283     gtk_window_get_position((GtkWindow*)widget, &point.x, &point.y);
 284
 285     win->m_x = point.x;
 286     win->m_y = point.y;
 287     wxMoveEvent mevent(point, win->GetId());
 288     mevent.SetEventObject( win );
 289     win->HandleWindowEvent( mevent );
 290
 291     return FALSE;
 292 }
 293 }
 294
 295 //-----------------------------------------------------------------------------
 296 // "realize" from m_widget
 297 //-----------------------------------------------------------------------------
 298
 299 // we cannot the WM hints and icons before the widget has been realized,
 300 // so we do this directly after realization
 301
 302 extern "C" {
 303 static void
 304 gtk_frame_realized_callback( GtkWidget * WXUNUSED(widget),
 305                              wxTopLevelWindowGTK *win )
 306 {
 307     gdk_window_set_decorations(win->m_widget->window,
 308                                (GdkWMDecoration)win->m_gdkDecor);
 309     gdk_window_set_functions(win->m_widget->window,
 310                                (GdkWMFunction)win->m_gdkFunc);
 311
 312     // GTK's shrinking/growing policy
 313     if ( !(win->m_gdkFunc & GDK_FUNC_RESIZE) )
 314         gtk_window_set_resizable(GTK_WINDOW(win->m_widget), FALSE);
 315     else
 316         gtk_window_set_policy(GTK_WINDOW(win->m_widget), 1, 1, 1);
 317
 318     const wxIconBundle& icons = win->GetIcons();
 319     if (icons.GetIconCount())
 320         win->SetIcons(icons);
 321
 322     if (win->HasFlag(wxFRAME_SHAPED))
 323         win->SetShape(win->m_shape); // it will really set the window shape now
 324 }
 325 }
 326
 327 //-----------------------------------------------------------------------------
 328 // "map_event" from m_widget
 329 //-----------------------------------------------------------------------------
 330
 331 extern "C" {
 332 static gboolean
 333 gtk_frame_map_callback( GtkWidget*,
 334                         GdkEvent * WXUNUSED(event),
 335                         wxTopLevelWindow *win )
 336 {
 337     const bool wasIconized = win->IsIconized();
 338     win->SetIconizeState(false);
 339     if (wasIconized)
 340     {
 341         // Because GetClientSize() returns (0,0) when IsIconized() is true,
 342         // a size event must be generated, just in case GetClientSize() was
 343         // called while iconized. This specifically happens when restoring a
 344         // tlw that was "rolled up" with some WMs.
 345         // Queue a resize rather than sending size event directly to allow
 346         // children to be made visible first.
 347         win->m_oldClientWidth = 0;
 348         gtk_widget_queue_resize(win->m_wxwindow);
 349     }
 350     // it is possible for m_isShown to be false here, see bug #9909
 351     if (win->wxWindowBase::Show(true))
 352     {
 353         wxShowEvent eventShow(win->GetId(), true);
 354         eventShow.SetEventObject(win);
 355         win->GetEventHandler()->ProcessEvent(eventShow);
 356     }
 357     return false;
 358 }
 359 }
 360
 361 //-----------------------------------------------------------------------------
 362 // "unmap_event" from m_widget
 363 //-----------------------------------------------------------------------------
 364
 365 extern "C" {
 366 static gboolean
 367 gtk_frame_unmap_callback( GtkWidget * WXUNUSED(widget),
 368                           GdkEvent * WXUNUSED(event),
 369                           wxTopLevelWindow *win )
 370 {
 371     win->SetIconizeState(true);
 372     return false;
 373 }
 374 }
 375
 376 //-----------------------------------------------------------------------------
 377
 378 bool wxGetFrameExtents(GdkWindow* window, int* left, int* right, int* top, int* bottom)
 379 {
 380     static GdkAtom property = gdk_atom_intern("_NET_FRAME_EXTENTS", false);
 381     Atom xproperty = gdk_x11_atom_to_xatom_for_display(
 382                         gdk_drawable_get_display(window), property);
 383     Atom type;
 384     int format;
 385     gulong nitems, bytes_after;
 386     guchar* data;
 387     Status status = XGetWindowProperty(
 388         gdk_x11_drawable_get_xdisplay(window),
 389         gdk_x11_drawable_get_xid(window),
 390         xproperty,
 391         0, 4, false, XA_CARDINAL,
 392         &type, &format, &nitems, &bytes_after, &data);
 393     const bool success = status == Success && data && nitems == 4;
 394     if (success)
 395     {
 396         long* p = (long*)data;
 397         if (left)   *left   = int(p[0]);
 398         if (right)  *right  = int(p[1]);
 399         if (top)    *top    = int(p[2]);
 400         if (bottom) *bottom = int(p[3]);
 401     }
 402     if (data)
 403         XFree(data);
 404     return success;
 405 }
 406
 407 //-----------------------------------------------------------------------------
 408 // "property_notify_event" from m_widget
 409 //-----------------------------------------------------------------------------
 410
 411 extern "C" {
 412 static gboolean property_notify_event(
 413     GtkWidget*, GdkEventProperty* event, wxTopLevelWindowGTK* win)
 414 {
 415     // Watch for changes to _NET_FRAME_EXTENTS property
 416     static GdkAtom property = gdk_atom_intern("_NET_FRAME_EXTENTS", false);
 417     if (event->state == GDK_PROPERTY_NEW_VALUE && event->atom == property)
 418     {
 419         int left, right, top, bottom;
 420         if (wxGetFrameExtents(event->window, &left, &right, &top, &bottom))
 421         {
 422             const wxSize decorSize =
 423                 wxSize(left + right, top + bottom);
 424             win->GTKUpdateDecorSize(decorSize);
 425         }
 426     }
 427     return false;
 428 }
 429 }
 430
 431 // ----------------------------------------------------------------------------
 432 // wxTopLevelWindowGTK creation
 433 // ----------------------------------------------------------------------------
 434
 435 void wxTopLevelWindowGTK::Init()
 436 {
 437     m_mainWidget = NULL;
 438     m_isIconized = false;
 439     m_fsIsShowing = false;
 440     m_themeEnabled = true;
 441     m_gdkDecor =
 442     m_gdkFunc = 0;
 443     m_grabbed = false;
 444     m_deferShow = true;
 445     m_deferShowAllowed = true;
 446     m_updateDecorSize = true;
 447
 448     m_urgency_hint = -2;
 449 }
 450
 451 bool wxTopLevelWindowGTK::Create( wxWindow *parent,
 452                                   wxWindowID id,
 453                                   const wxString& title,
 454                                   const wxPoint& pos,
 455                                   const wxSize& sizeOrig,
 456                                   long style,
 457                                   const wxString &name )
 458 {
 459     // always create a frame of some reasonable, even if arbitrary, size (at
 460     // least for MSW compatibility)
 461     wxSize size = sizeOrig;
 462     size.x = WidthDefault(size.x);
 463     size.y = HeightDefault(size.y);
 464
 465     wxTopLevelWindows.Append( this );
 466
 467     if (!PreCreation( parent, pos, size ) ||
 468         !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
 469     {
 470         wxFAIL_MSG( wxT("wxTopLevelWindowGTK creation failed") );
 471         return false;
 472     }
 473
 474     m_title = title;
 475
 476     // NB: m_widget may be !=NULL if it was created by derived class' Create,
 477     //     e.g. in wxTaskBarIconAreaGTK
 478     if (m_widget == NULL)
 479     {
 480 #if wxUSE_LIBHILDON
 481         // we must create HildonWindow and not a normal GtkWindow as the latter
 482         // doesn't look correctly in Maemo environment and it must also be
 483         // registered with the main program object
 484         m_widget = hildon_window_new();
 485         hildon_program_add_window(wxTheApp->GetHildonProgram(),
 486                                   HILDON_WINDOW(m_widget));
 487 #else // !wxUSE_LIBHILDON
 488         m_widget = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 489         if (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)
 490         {
 491             // Tell WM that this is a dialog window and make it center
 492             // on parent by default (this is what GtkDialog ctor does):
 493             gtk_window_set_type_hint(GTK_WINDOW(m_widget),
 494                                      GDK_WINDOW_TYPE_HINT_DIALOG);
 495             gtk_window_set_position(GTK_WINDOW(m_widget),
 496                                     GTK_WIN_POS_CENTER_ON_PARENT);
 497         }
 498         else
 499         {
 500             if (style & wxFRAME_TOOL_WINDOW)
 501             {
 502                 gtk_window_set_type_hint(GTK_WINDOW(m_widget),
 503                                          GDK_WINDOW_TYPE_HINT_UTILITY);
 504
 505                 // On some WMs, like KDE, a TOOL_WINDOW will still show
 506                 // on the taskbar, but on Gnome a TOOL_WINDOW will not.
 507                 // For consistency between WMs and with Windows, we
 508                 // should set the NO_TASKBAR flag which will apply
 509                 // the set_skip_taskbar_hint if it is available,
 510                 // ensuring no taskbar entry will appear.
 511                 style |= wxFRAME_NO_TASKBAR;
 512             }
 513         }
 514 #endif // wxUSE_LIBHILDON/!wxUSE_LIBHILDON
 515
 516         g_object_ref(m_widget);
 517     }
 518
 519     wxWindow *topParent = wxGetTopLevelParent(m_parent);
 520     if (topParent && (((GTK_IS_WINDOW(topParent->m_widget)) &&
 521                        (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)) ||
 522                        (style & wxFRAME_FLOAT_ON_PARENT)))
 523     {
 524         gtk_window_set_transient_for( GTK_WINDOW(m_widget),
 525                                       GTK_WINDOW(topParent->m_widget) );
 526     }
 527
 528     if (style & wxFRAME_NO_TASKBAR)
 529     {
 530         gtk_window_set_skip_taskbar_hint(GTK_WINDOW(m_widget), TRUE);
 531     }
 532
 533     if (style & wxSTAY_ON_TOP)
 534     {
 535         gtk_window_set_keep_above(GTK_WINDOW(m_widget), TRUE);
 536     }
 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 is a GtkVBox, holding the bars and client area (m_wxwindow)
 550     m_mainWidget = gtk_vbox_new(false, 0);
 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     // m_wxwindow is the client area
 556     m_wxwindow = wxPizza::New(0,this);
 557     gtk_widget_show( m_wxwindow );
 558     gtk_container_add( GTK_CONTAINER(m_mainWidget), m_wxwindow );
 559
 560     // we donm't allow the frame to get the focus as otherwise
 561     // the frame will grab it at arbitrary focus changes
 562     GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
 563
 564     if (m_parent) m_parent->AddChild( this );
 565
 566     g_signal_connect(m_wxwindow, "size_allocate",
 567         G_CALLBACK(size_allocate), this);
 568
 569     g_signal_connect (m_widget, "size_request",
 570                       G_CALLBACK (wxgtk_tlw_size_request_callback), this);
 571     PostCreation();
 572
 573     if ((m_x != -1) || (m_y != -1))
 574         gtk_widget_set_uposition( m_widget, m_x, m_y );
 575
 576     //  we cannot set MWM hints and icons before the widget has
 577     //  been realized, so we do this directly after realization
 578     g_signal_connect (m_widget, "realize",
 579                       G_CALLBACK (gtk_frame_realized_callback), this);
 580
 581     // map and unmap for iconized state
 582     g_signal_connect (m_widget, "map_event",
 583                       G_CALLBACK (gtk_frame_map_callback), this);
 584     g_signal_connect (m_widget, "unmap_event",
 585                       G_CALLBACK (gtk_frame_unmap_callback), this);
 586
 587     // for wxMoveEvent
 588     g_signal_connect (m_widget, "configure_event",
 589                       G_CALLBACK (gtk_frame_configure_callback), this);
 590
 591     // activation
 592     g_signal_connect_after (m_widget, "focus_in_event",
 593                       G_CALLBACK (gtk_frame_focus_in_callback), this);
 594     g_signal_connect_after (m_widget, "focus_out_event",
 595                       G_CALLBACK (gtk_frame_focus_out_callback), this);
 596
 597     gtk_widget_add_events(m_widget, GDK_PROPERTY_CHANGE_MASK);
 598     g_signal_connect(m_widget, "property_notify_event",
 599         G_CALLBACK(property_notify_event), this);
 600
 601     // translate wx decorations styles into Motif WM hints (they are recognized
 602     // by other WMs as well)
 603
 604     // always enable moving the window as we have no separate flag for enabling
 605     // it
 606     m_gdkFunc = GDK_FUNC_MOVE;
 607
 608     if ( style & wxCLOSE_BOX )
 609         m_gdkFunc |= GDK_FUNC_CLOSE;
 610
 611     if ( style & wxMINIMIZE_BOX )
 612         m_gdkFunc |= GDK_FUNC_MINIMIZE;
 613
 614     if ( style & wxMAXIMIZE_BOX )
 615         m_gdkFunc |= GDK_FUNC_MAXIMIZE;
 616
 617     if ( (style & wxSIMPLE_BORDER) || (style & wxNO_BORDER) )
 618     {
 619         m_gdkDecor = 0;
 620     }
 621     else // have border
 622     {
 623         m_gdkDecor = GDK_DECOR_BORDER;
 624
 625         if ( style & wxCAPTION )
 626             m_gdkDecor |= GDK_DECOR_TITLE;
 627
 628         if ( style & wxSYSTEM_MENU )
 629             m_gdkDecor |= GDK_DECOR_MENU;
 630
 631         if ( style & wxMINIMIZE_BOX )
 632             m_gdkDecor |= GDK_DECOR_MINIMIZE;
 633
 634         if ( style & wxMAXIMIZE_BOX )
 635             m_gdkDecor |= GDK_DECOR_MAXIMIZE;
 636
 637         if ( style & wxRESIZE_BORDER )
 638         {
 639            m_gdkFunc |= GDK_FUNC_RESIZE;
 640            m_gdkDecor |= GDK_DECOR_RESIZEH;
 641         }
 642     }
 643
 644     m_decorSize = GetCachedDecorSize();
 645     int w, h;
 646     GTKDoGetSize(&w, &h);
 647     gtk_window_set_default_size(GTK_WINDOW(m_widget), w, h);
 648
 649     return true;
 650 }
 651
 652 wxTopLevelWindowGTK::~wxTopLevelWindowGTK()
 653 {
 654 #if wxUSE_LIBHILDON
 655     // it can also be a (standard) dialog
 656     if ( HILDON_IS_WINDOW(m_widget) )
 657     {
 658         hildon_program_remove_window(wxTheApp->GetHildonProgram(),
 659                                      HILDON_WINDOW(m_widget));
 660     }
 661 #endif // wxUSE_LIBHILDON
 662
 663     if (m_grabbed)
 664     {
 665         wxFAIL_MSG(_T("Window still grabbed"));
 666         RemoveGrab();
 667     }
 668
 669     SendDestroyEvent();
 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)
 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     // NB: gtk_window_fullscreen() uses freedesktop.org's WMspec extensions
 708     //     to switch to fullscreen, which is not always available. We must
 709     //     check if WM supports the spec and use legacy methods if it
 710     //     doesn't.
 711     if ( method == wxX11_FS_WMSPEC )
 712     {
 713         if (show)
 714             gtk_window_fullscreen( GTK_WINDOW( m_widget ) );
 715         else
 716             gtk_window_unfullscreen( GTK_WINDOW( m_widget ) );
 717     }
 718     else
 719     {
 720         GdkWindow *window = m_widget->window;
 721
 722         if (show)
 723         {
 724             GetPosition( &m_fsSaveFrame.x, &m_fsSaveFrame.y );
 725             GetSize( &m_fsSaveFrame.width, &m_fsSaveFrame.height );
 726
 727             int screen_width,screen_height;
 728             wxDisplaySize( &screen_width, &screen_height );
 729
 730             gint client_x, client_y, root_x, root_y;
 731             gint width, height;
 732
 733             m_fsSaveGdkFunc = m_gdkFunc;
 734             m_fsSaveGdkDecor = m_gdkDecor;
 735             m_gdkFunc = m_gdkDecor = 0;
 736             gdk_window_set_decorations(window, (GdkWMDecoration)0);
 737             gdk_window_set_functions(window, (GdkWMFunction)0);
 738
 739             gdk_window_get_origin (m_widget->window, &root_x, &root_y);
 740             gdk_window_get_geometry (m_widget->window, &client_x, &client_y,
 741                          &width, &height, NULL);
 742
 743             gdk_window_move_resize (m_widget->window, -client_x, -client_y,
 744                         screen_width + 1, screen_height + 1);
 745
 746             wxSetFullScreenStateX11((WXDisplay*)GDK_DISPLAY(),
 747                                     (WXWindow)GDK_ROOT_WINDOW(),
 748                                     (WXWindow)GDK_WINDOW_XWINDOW(window),
 749                                     show, &m_fsSaveFrame, method);
 750         }
 751         else // hide
 752         {
 753             m_gdkFunc = m_fsSaveGdkFunc;
 754             m_gdkDecor = m_fsSaveGdkDecor;
 755             gdk_window_set_decorations(window, (GdkWMDecoration)m_gdkDecor);
 756             gdk_window_set_functions(window, (GdkWMFunction)m_gdkFunc);
 757
 758             wxSetFullScreenStateX11((WXDisplay*)GDK_DISPLAY(),
 759                                     (WXWindow)GDK_ROOT_WINDOW(),
 760                                     (WXWindow)GDK_WINDOW_XWINDOW(window),
 761                                     show, &m_fsSaveFrame, method);
 762
 763             SetSize(m_fsSaveFrame.x, m_fsSaveFrame.y,
 764                     m_fsSaveFrame.width, m_fsSaveFrame.height);
 765         }
 766     }
 767
 768     // documented behaviour is to show the window if it's still hidden when
 769     // showing it full screen
 770     if (show)
 771         Show();
 772
 773     return true;
 774 }
 775
 776 // ----------------------------------------------------------------------------
 777 // overridden wxWindow methods
 778 // ----------------------------------------------------------------------------
 779
 780 void wxTopLevelWindowGTK::Refresh( bool WXUNUSED(eraseBackground), const wxRect *WXUNUSED(rect) )
 781 {
 782     wxCHECK_RET( m_widget, wxT("invalid frame") );
 783
 784    gtk_widget_queue_draw( m_widget );
 785    gdk_window_invalidate_rect( m_wxwindow->window, NULL, TRUE );
 786 }
 787
 788 bool wxTopLevelWindowGTK::Show( bool show )
 789 {
 790     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
 791
 792     bool deferShow = show && !m_isShown && m_deferShow && m_deferShowAllowed;
 793     if (deferShow)
 794     {
 795         deferShow = false;
 796         if (!GTK_WIDGET_REALIZED(m_widget) &&
 797             g_signal_handler_find(m_widget,
 798                 GSignalMatchType(G_SIGNAL_MATCH_ID | G_SIGNAL_MATCH_DATA),
 799                 g_signal_lookup("property_notify_event", GTK_TYPE_WIDGET),
 800                 0, NULL, NULL, this))
 801         {
 802             if (gdk_x11_screen_supports_net_wm_hint(
 803                 gtk_widget_get_screen(m_widget),
 804                 gdk_atom_intern("_NET_REQUEST_FRAME_EXTENTS", false)))
 805             {
 806                 deferShow = true;
 807             }
 808             else
 809             {
 810                 // Don't allow changes to m_decorSize, it breaks saving/restoring
 811                 // window size with GetSize()/SetSize() because it makes window
 812                 // bigger between each restore and save.
 813                 m_updateDecorSize = false;
 814             }
 815         }
 816         m_deferShow = deferShow;
 817     }
 818     if (deferShow)
 819     {
 820         // Initial show. If WM supports _NET_REQUEST_FRAME_EXTENTS, defer
 821         // calling gtk_widget_show() until _NET_FRAME_EXTENTS property
 822         // notification is received, so correct frame extents are known.
 823         // This allows resizing m_widget to keep the overall size in sync with
 824         // what wxWidgets expects it to be without an obvious change in the
 825         // window size immediately after it becomes visible.
 826
 827         // Realize m_widget, so m_widget->window can be used. Realizing normally
 828         // causes the widget tree to be size_allocated, which generates size
 829         // events in the wrong order. However, the size_allocates will not be
 830         // done if the allocation is not the default (1,1).
 831         const int alloc_width = m_widget->allocation.width;
 832         if (alloc_width == 1)
 833             m_widget->allocation.width = 2;
 834         gtk_widget_realize(m_widget);
 835         if (alloc_width == 1)
 836             m_widget->allocation.width = 1;
 837
 838         // send _NET_REQUEST_FRAME_EXTENTS
 839         XClientMessageEvent xevent;
 840         memset(&xevent, 0, sizeof(xevent));
 841         xevent.type = ClientMessage;
 842         xevent.window = gdk_x11_drawable_get_xid(m_widget->window);
 843         xevent.message_type = gdk_x11_atom_to_xatom_for_display(
 844             gdk_drawable_get_display(m_widget->window),
 845             gdk_atom_intern("_NET_REQUEST_FRAME_EXTENTS", false));
 846         xevent.format = 32;
 847         Display* display = gdk_x11_drawable_get_xdisplay(m_widget->window);
 848         XSendEvent(display, DefaultRootWindow(display), false,
 849             SubstructureNotifyMask | SubstructureRedirectMask,
 850             (XEvent*)&xevent);
 851
 852         // defer calling gtk_widget_show()
 853         m_isShown = true;
 854         return true;
 855     }
 856
 857     if (show && !GTK_WIDGET_REALIZED(m_widget))
 858     {
 859         // size_allocate signals occur in reverse order (bottom to top).
 860         // Things work better if the initial wxSizeEvents are sent (from the
 861         // top down), before the initial size_allocate signals occur.
 862         wxSizeEvent event(GetSize(), GetId());
 863         event.SetEventObject(this);
 864         HandleWindowEvent(event);
 865     }
 866
 867     bool change = wxTopLevelWindowBase::Show(show);
 868
 869     if (change && !show)
 870     {
 871         // make sure window has a non-default position, so when it is shown
 872         // again, it won't be repositioned by WM as if it were a new window
 873         // Note that this must be done _after_ the window is hidden.
 874         gtk_window_move((GtkWindow*)m_widget, m_x, m_y);
 875     }
 876
 877     return change;
 878 }
 879
 880 void wxTopLevelWindowGTK::Raise()
 881 {
 882     gtk_window_present( GTK_WINDOW( m_widget ) );
 883 }
 884
 885 void wxTopLevelWindowGTK::DoMoveWindow(int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(width), int WXUNUSED(height) )
 886 {
 887     wxFAIL_MSG( wxT("DoMoveWindow called for wxTopLevelWindowGTK") );
 888 }
 889
 890 // ----------------------------------------------------------------------------
 891 // window geometry
 892 // ----------------------------------------------------------------------------
 893
 894 void wxTopLevelWindowGTK::GTKDoGetSize(int *width, int *height) const
 895 {
 896     wxSize size(m_width, m_height);
 897     size -= m_decorSize;
 898     if (size.x < 0) size.x = 0;
 899     if (size.y < 0) size.y = 0;
 900     if (width)  *width  = size.x;
 901     if (height) *height = size.y;
 902 }
 903
 904 void wxTopLevelWindowGTK::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 905 {
 906     wxCHECK_RET( m_widget, wxT("invalid frame") );
 907
 908     m_deferShowAllowed = true;
 909
 910     // deal with the position first
 911     int old_x = m_x;
 912     int old_y = m_y;
 913
 914     if ( !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE) )
 915     {
 916         // -1 means "use existing" unless the flag above is specified
 917         if ( x != -1 )
 918             m_x = x;
 919         if ( y != -1 )
 920             m_y = y;
 921     }
 922     else // wxSIZE_ALLOW_MINUS_ONE
 923     {
 924         m_x = x;
 925         m_y = y;
 926     }
 927
 928     if ( m_x != old_x || m_y != old_y )
 929     {
 930         gtk_window_move( GTK_WINDOW(m_widget), m_x, m_y );
 931     }
 932
 933     const wxSize oldSize(m_width, m_height);
 934     if (width >= 0)
 935         m_width = width;
 936     if (height >= 0)
 937         m_height = height;
 938     ConstrainSize();
 939     if (m_width != oldSize.x || m_height != oldSize.y)
 940     {
 941         int w, h;
 942         GTKDoGetSize(&w, &h);
 943         gtk_window_resize(GTK_WINDOW(m_widget), w, h);
 944
 945         GetClientSize(&m_oldClientWidth, &m_oldClientHeight);
 946         wxSizeEvent event(GetSize(), GetId());
 947         event.SetEventObject(this);
 948         HandleWindowEvent(event);
 949     }
 950 }
 951
 952 void wxTopLevelWindowGTK::DoSetClientSize(int width, int height)
 953 {
 954     // Since client size is being explicitly set, don't change it later
 955     m_deferShowAllowed = false;
 956
 957     wxTopLevelWindowBase::DoSetClientSize(width, height);
 958 }
 959
 960 void wxTopLevelWindowGTK::DoGetClientSize( int *width, int *height ) const
 961 {
 962     wxASSERT_MSG(m_widget, wxT("invalid frame"));
 963
 964     if ( IsIconized() )
 965     {
 966         // for consistency with wxMSW, client area is supposed to be empty for
 967         // the iconized windows
 968         if ( width )
 969             *width = 0;
 970         if ( height )
 971             *height = 0;
 972     }
 973     else
 974     {
 975         GTKDoGetSize(width, height);
 976     }
 977 }
 978
 979 void wxTopLevelWindowGTK::DoSetSizeHints( int minW, int minH,
 980                                           int maxW, int maxH,
 981                                           int incW, int incH )
 982 {
 983     wxTopLevelWindowBase::DoSetSizeHints( minW, minH, maxW, maxH, incW, incH );
 984
 985     const wxSize minSize = GetMinSize();
 986     const wxSize maxSize = GetMaxSize();
 987     GdkGeometry hints;
 988     int hints_mask = 0;
 989     if (minSize.x > 0 || minSize.y > 0)
 990     {
 991         hints_mask |= GDK_HINT_MIN_SIZE;
 992         hints.min_width = minSize.x - m_decorSize.x;
 993         if (hints.min_width < 0)
 994             hints.min_width = 0;
 995         hints.min_height = minSize.y - m_decorSize.y;
 996         if (hints.min_height < 0)
 997             hints.min_height = 0;
 998     }
 999     if (maxSize.x > 0 || maxSize.y > 0)
1000     {
1001         hints_mask |= GDK_HINT_MAX_SIZE;
1002         hints.max_width = maxSize.x - m_decorSize.x;
1003         if (hints.max_width < 0)
1004             hints.max_width = INT_MAX;
1005         hints.max_height = maxSize.y - m_decorSize.y;
1006         if (hints.max_height < 0)
1007             hints.max_height = INT_MAX;
1008     }
1009     if (incW > 0 || incH > 0)
1010     {
1011         hints_mask |= GDK_HINT_RESIZE_INC;
1012         hints.width_inc  = incW > 0 ? incW : 1;
1013         hints.height_inc = incH > 0 ? incH : 1;
1014     }
1015     gtk_window_set_geometry_hints(
1016         (GtkWindow*)m_widget, NULL, &hints, (GdkWindowHints)hints_mask);
1017 }
1018
1019 void wxTopLevelWindowGTK::GTKUpdateDecorSize(const wxSize& decorSize)
1020 {
1021     if (!IsMaximized() && !IsFullScreen())
1022         GetCachedDecorSize() = decorSize;
1023     if (m_updateDecorSize && m_decorSize != decorSize)
1024     {
1025         const wxSize diff = decorSize - m_decorSize;
1026         m_decorSize = decorSize;
1027         bool resized = false;
1028         if (m_deferShow)
1029         {
1030             // keep overall size unchanged by shrinking m_widget
1031             int w, h;
1032             GTKDoGetSize(&w, &h);
1033             // but not if size would be less than minimum, it won't take effect
1034             const wxSize minSize = GetMinSize();
1035             if (w >= minSize.x && h >= minSize.y)
1036             {
1037                 gtk_window_resize(GTK_WINDOW(m_widget), w, h);
1038                 resized = true;
1039             }
1040         }
1041         if (!resized)
1042         {
1043             // adjust overall size to match change in frame extents
1044             m_width  += diff.x;
1045             m_height += diff.y;
1046             if (m_width  < 0) m_width  = 0;
1047             if (m_height < 0) m_height = 0;
1048             m_oldClientWidth = 0;
1049             gtk_widget_queue_resize(m_wxwindow);
1050         }
1051     }
1052     if (m_deferShow)
1053     {
1054         // gtk_widget_show() was deferred, do it now
1055         m_deferShow = false;
1056         GetClientSize(&m_oldClientWidth, &m_oldClientHeight);
1057         wxSizeEvent sizeEvent(GetSize(), GetId());
1058         sizeEvent.SetEventObject(this);
1059         HandleWindowEvent(sizeEvent);
1060
1061         gtk_widget_show(m_widget);
1062
1063         wxShowEvent showEvent(GetId(), true);
1064         showEvent.SetEventObject(this);
1065         HandleWindowEvent(showEvent);
1066     }
1067 }
1068
1069 wxSize& wxTopLevelWindowGTK::GetCachedDecorSize()
1070 {
1071     static wxSize size[8];
1072
1073     int index = 0;
1074     // title bar
1075     if (m_gdkDecor & (GDK_DECOR_MENU | GDK_DECOR_MINIMIZE | GDK_DECOR_MAXIMIZE | GDK_DECOR_TITLE))
1076         index = 1;
1077     // border
1078     if (m_gdkDecor & GDK_DECOR_BORDER)
1079         index |= 2;
1080     // utility window decor can be different
1081     if (m_windowStyle & wxFRAME_TOOL_WINDOW)
1082         index |= 4;
1083     return size[index];
1084 }
1085
1086 void wxTopLevelWindowGTK::OnInternalIdle()
1087 {
1088     wxWindow::OnInternalIdle();
1089
1090     // Synthetize activate events.
1091     if ( g_sendActivateEvent != -1 )
1092     {
1093         bool activate = g_sendActivateEvent != 0;
1094
1095         // if (!activate) wxPrintf( wxT("de") );
1096         // wxPrintf( wxT("activate\n") );
1097
1098         // do it only once
1099         g_sendActivateEvent = -1;
1100
1101         wxTheApp->SetActive(activate, (wxWindow *)g_lastActiveFrame);
1102     }
1103 }
1104
1105 // ----------------------------------------------------------------------------
1106 // frame title/icon
1107 // ----------------------------------------------------------------------------
1108
1109 void wxTopLevelWindowGTK::SetTitle( const wxString &title )
1110 {
1111     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
1112
1113     if ( title == m_title )
1114         return;
1115
1116     m_title = title;
1117
1118     gtk_window_set_title( GTK_WINDOW(m_widget), wxGTK_CONV( title ) );
1119 }
1120
1121 void wxTopLevelWindowGTK::SetIcons( const wxIconBundle &icons )
1122 {
1123     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
1124
1125     wxTopLevelWindowBase::SetIcons( icons );
1126
1127     // Setting icons before window is realized can cause a GTK assertion if
1128     // another TLW is realized before this one, and it has this one as it's
1129     // transient parent. The life demo exibits this problem.
1130     if (GTK_WIDGET_REALIZED(m_widget))
1131     {
1132         GList* list = NULL;
1133         for (size_t i = icons.GetIconCount(); i--;)
1134             list = g_list_prepend(list, icons.GetIconByIndex(i).GetPixbuf());
1135         gtk_window_set_icon_list(GTK_WINDOW(m_widget), list);
1136         g_list_free(list);
1137     }
1138 }
1139
1140 // ----------------------------------------------------------------------------
1141 // frame state: maximized/iconized/normal
1142 // ----------------------------------------------------------------------------
1143
1144 void wxTopLevelWindowGTK::Maximize(bool maximize)
1145 {
1146     if (maximize)
1147         gtk_window_maximize( GTK_WINDOW( m_widget ) );
1148     else
1149         gtk_window_unmaximize( GTK_WINDOW( m_widget ) );
1150 }
1151
1152 bool wxTopLevelWindowGTK::IsMaximized() const
1153 {
1154     if(!m_widget->window)
1155         return false;
1156
1157     return gdk_window_get_state(m_widget->window) & GDK_WINDOW_STATE_MAXIMIZED;
1158 }
1159
1160 void wxTopLevelWindowGTK::Restore()
1161 {
1162     // "Present" seems similar enough to "restore"
1163     gtk_window_present( GTK_WINDOW( m_widget ) );
1164 }
1165
1166 void wxTopLevelWindowGTK::Iconize( bool iconize )
1167 {
1168     if (iconize)
1169         gtk_window_iconify( GTK_WINDOW( m_widget ) );
1170     else
1171         gtk_window_deiconify( GTK_WINDOW( m_widget ) );
1172 }
1173
1174 bool wxTopLevelWindowGTK::IsIconized() const
1175 {
1176     return m_isIconized;
1177 }
1178
1179 void wxTopLevelWindowGTK::SetIconizeState(bool iconize)
1180 {
1181     if ( iconize != m_isIconized )
1182     {
1183         m_isIconized = iconize;
1184         (void)SendIconizeEvent(iconize);
1185     }
1186 }
1187
1188 void wxTopLevelWindowGTK::AddGrab()
1189 {
1190     if (!m_grabbed)
1191     {
1192         m_grabbed = true;
1193         gtk_grab_add( m_widget );
1194         wxGUIEventLoop().Run();
1195         gtk_grab_remove( m_widget );
1196     }
1197 }
1198
1199 void wxTopLevelWindowGTK::RemoveGrab()
1200 {
1201     if (m_grabbed)
1202     {
1203         gtk_main_quit();
1204         m_grabbed = false;
1205     }
1206 }
1207
1208
1209 // helper
1210 static bool do_shape_combine_region(GdkWindow* window, const wxRegion& region)
1211 {
1212     if (window)
1213     {
1214         if (region.IsEmpty())
1215         {
1216             gdk_window_shape_combine_mask(window, NULL, 0, 0);
1217         }
1218         else
1219         {
1220             gdk_window_shape_combine_region(window, region.GetRegion(), 0, 0);
1221             return true;
1222         }
1223     }
1224     return false;
1225 }
1226
1227
1228 bool wxTopLevelWindowGTK::SetShape(const wxRegion& region)
1229 {
1230     wxCHECK_MSG( HasFlag(wxFRAME_SHAPED), false,
1231                  _T("Shaped windows must be created with the wxFRAME_SHAPED style."));
1232
1233     if ( GTK_WIDGET_REALIZED(m_widget) )
1234     {
1235         if ( m_wxwindow )
1236             do_shape_combine_region(m_wxwindow->window, region);
1237
1238         return do_shape_combine_region(m_widget->window, region);
1239     }
1240     else // not realized yet
1241     {
1242         // store the shape to set, it will be really set once we're realized
1243         m_shape = region;
1244
1245         // we don't know if we're going to succeed or fail, be optimistic by
1246         // default
1247         return true;
1248     }
1249 }
1250
1251 bool wxTopLevelWindowGTK::IsActive()
1252 {
1253     return (this == (wxTopLevelWindowGTK*)g_activeFrame);
1254 }
1255
1256 void wxTopLevelWindowGTK::RequestUserAttention(int flags)
1257 {
1258     bool new_hint_value = false;
1259
1260     // FIXME: This is a workaround to focus handling problem
1261     // If RequestUserAttention is called for example right after a wxSleep, OnInternalIdle
1262     // hasn't yet been processed, and the internal focus system is not up to date yet.
1263     // YieldFor(wxEVT_CATEGORY_UI) ensures the processing of it (hopefully it
1264     // won't have side effects) - MR
1265     wxEventLoopBase::GetActive()->YieldFor(wxEVT_CATEGORY_UI);
1266
1267     if(m_urgency_hint >= 0)
1268         g_source_remove(m_urgency_hint);
1269
1270     m_urgency_hint = -2;
1271
1272     if( GTK_WIDGET_REALIZED(m_widget) && !IsActive() )
1273     {
1274         new_hint_value = true;
1275
1276         if (flags & wxUSER_ATTENTION_INFO)
1277         {
1278             m_urgency_hint = g_timeout_add(5000, (GSourceFunc)gtk_frame_urgency_timer_callback, this);
1279         } else {
1280             m_urgency_hint = -1;
1281         }
1282     }
1283
1284 #if GTK_CHECK_VERSION(2,7,0)
1285     if(!gtk_check_version(2,7,0))
1286         gtk_window_set_urgency_hint(GTK_WINDOW( m_widget ), new_hint_value);
1287     else
1288 #endif
1289         wxgtk_window_set_urgency_hint(GTK_WINDOW( m_widget ), new_hint_value);
1290 }
1291
1292 void wxTopLevelWindowGTK::SetWindowStyleFlag( long style )
1293 {
1294     // Store which styles were changed
1295     long styleChanges = style ^ m_windowStyle;
1296
1297     // Process wxWindow styles. This also updates the internal variable
1298     // Therefore m_windowStyle bits carry now the _new_ style values
1299     wxWindow::SetWindowStyleFlag(style);
1300
1301     // just return for now if widget does not exist yet
1302     if (!m_widget)
1303         return;
1304
1305     if ( styleChanges & wxSTAY_ON_TOP )
1306     {
1307         gtk_window_set_keep_above(GTK_WINDOW(m_widget),
1308                                   m_windowStyle & wxSTAY_ON_TOP);
1309     }
1310
1311     if ( styleChanges & wxFRAME_NO_TASKBAR )
1312     {
1313         gtk_window_set_skip_taskbar_hint(GTK_WINDOW(m_widget),
1314                                          m_windowStyle & wxFRAME_NO_TASKBAR);
1315     }
1316 }
1317
1318 /* Get the X Window between child and the root window.
1319    This should usually be the WM managed XID */
1320 static Window wxGetTopmostWindowX11(Display *dpy, Window child)
1321 {
1322     Window root, parent;
1323     Window* children;
1324     unsigned int nchildren;
1325
1326     XQueryTree(dpy, child, &root, &parent, &children, &nchildren);
1327     XFree(children);
1328
1329     while (parent != root) {
1330         child = parent;
1331         XQueryTree(dpy, child, &root, &parent, &children, &nchildren);
1332         XFree(children);
1333     }
1334
1335     return child;
1336 }
1337
1338 bool wxTopLevelWindowGTK::SetTransparent(wxByte alpha)
1339 {
1340     if (!m_widget || !m_widget->window)
1341         return false;
1342
1343     Display* dpy = GDK_WINDOW_XDISPLAY (m_widget->window);
1344     // We need to get the X Window that has the root window as the immediate parent
1345     // and m_widget->window as a child. This should be the X Window that the WM manages and
1346     // from which the opacity property is checked from.
1347     Window win = wxGetTopmostWindowX11(dpy, GDK_WINDOW_XID (m_widget->window));
1348
1349
1350     // Using pure Xlib to not have a GTK version check mess due to gtk2.0 not having GdkDisplay
1351     if (alpha == 0xff)
1352         XDeleteProperty(dpy, win, XInternAtom(dpy, "_NET_WM_WINDOW_OPACITY", False));
1353     else
1354     {
1355         long opacity = alpha * 0x1010101L;
1356         XChangeProperty(dpy, win, XInternAtom(dpy, "_NET_WM_WINDOW_OPACITY", False),
1357                         XA_CARDINAL, 32, PropModeReplace,
1358                         (unsigned char *) &opacity, 1L);
1359     }
1360     XSync(dpy, False);
1361     return true;
1362 }
1363
1364 bool wxTopLevelWindowGTK::CanSetTransparent()
1365 {
1366     // allow to override automatic detection as it's far from perfect
1367     static const wxChar *SYSOPT_TRANSPARENT = wxT("gtk.tlw.can-set-transparent");
1368     if ( wxSystemOptions::HasOption(SYSOPT_TRANSPARENT) )
1369     {
1370         return wxSystemOptions::GetOptionInt(SYSOPT_TRANSPARENT) != 0;
1371     }
1372
1373 #if GTK_CHECK_VERSION(2,10,0)
1374     if (!gtk_check_version(2,10,0))
1375     {
1376         return (gtk_widget_is_composited (m_widget));
1377     }
1378     else
1379 #endif // In case of lower versions than gtk+-2.10.0 we could look for _NET_WM_CM_Sn ourselves
1380     {
1381         return false;
1382     }
1383
1384 #if 0 // Don't be optimistic here for the sake of wxAUI
1385     int opcode, event, error;
1386     // Check for the existence of a RGBA visual instead?
1387     return XQueryExtension(gdk_x11_get_default_xdisplay (),
1388                            "Composite", &opcode, &event, &error);
1389 #endif
1390 }