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 #if 1
 226             win->m_resizeQueued = true;
 227 #else
 228             wxSizeEvent event(size, win->GetId());
 229             event.SetEventObject(win);
 230             win->HandleWindowEvent(event);
 231 #endif
 232         }
 233         // else the window is currently unmapped, don't generate size events
 234     }
 235 }
 236 }
 237
 238 // ----------------------------------------------------------------------------
 239 // "size_request"
 240 // ----------------------------------------------------------------------------
 241
 242 extern "C" {
 243 static
 244 void wxgtk_tlw_size_request_callback(GtkWidget * WXUNUSED(widget),
 245                                      GtkRequisition *requisition,
 246                                      wxTopLevelWindowGTK *win)
 247 {
 248     // we must return the size of the window without WM decorations, otherwise
 249     // GTK+ gets confused, so don't call just GetSize() here
 250     win->GTKDoGetSize(&requisition->width, &requisition->height);
 251 }
 252 }
 253
 254 //-----------------------------------------------------------------------------
 255 // "delete_event"
 256 //-----------------------------------------------------------------------------
 257
 258 extern "C" {
 259 static gboolean
 260 gtk_frame_delete_callback( GtkWidget *WXUNUSED(widget),
 261                            GdkEvent *WXUNUSED(event),
 262                            wxTopLevelWindowGTK *win )
 263 {
 264     if (win->IsEnabled() &&
 265         (wxOpenModalDialogsCount == 0 || (win->GetExtraStyle() & wxTOPLEVEL_EX_DIALOG) ||
 266          win->IsGrabbed()))
 267         win->Close();
 268
 269     return TRUE;
 270 }
 271 }
 272
 273 //-----------------------------------------------------------------------------
 274 // "configure_event"
 275 //-----------------------------------------------------------------------------
 276
 277 extern "C" {
 278 static gboolean
 279 gtk_frame_configure_callback( GtkWidget* widget,
 280                               GdkEventConfigure *WXUNUSED(event),
 281                               wxTopLevelWindowGTK *win )
 282 {
 283     if (!win->m_hasVMT || !win->IsShown())
 284         return FALSE;
 285
 286     wxPoint point;
 287     gtk_window_get_position((GtkWindow*)widget, &point.x, &point.y);
 288
 289     win->m_x = point.x;
 290     win->m_y = point.y;
 291     wxMoveEvent mevent(point, win->GetId());
 292     mevent.SetEventObject( win );
 293     win->HandleWindowEvent( mevent );
 294
 295     return FALSE;
 296 }
 297 }
 298
 299 //-----------------------------------------------------------------------------
 300 // "realize" from m_widget
 301 //-----------------------------------------------------------------------------
 302
 303 // we cannot the WM hints and icons before the widget has been realized,
 304 // so we do this directly after realization
 305
 306 extern "C" {
 307 static void
 308 gtk_frame_realized_callback( GtkWidget * WXUNUSED(widget),
 309                              wxTopLevelWindowGTK *win )
 310 {
 311     gdk_window_set_decorations(win->m_widget->window,
 312                                (GdkWMDecoration)win->m_gdkDecor);
 313     gdk_window_set_functions(win->m_widget->window,
 314                                (GdkWMFunction)win->m_gdkFunc);
 315
 316     // GTK's shrinking/growing policy
 317     if ( !(win->m_gdkFunc & GDK_FUNC_RESIZE) )
 318         gtk_window_set_resizable(GTK_WINDOW(win->m_widget), FALSE);
 319     else
 320         gtk_window_set_policy(GTK_WINDOW(win->m_widget), 1, 1, 1);
 321
 322     const wxIconBundle& icons = win->GetIcons();
 323     if (icons.GetIconCount())
 324         win->SetIcons(icons);
 325
 326     if (win->HasFlag(wxFRAME_SHAPED))
 327         win->SetShape(win->m_shape); // it will really set the window shape now
 328 }
 329 }
 330
 331 //-----------------------------------------------------------------------------
 332 // "map_event" from m_widget
 333 //-----------------------------------------------------------------------------
 334
 335 extern "C" {
 336 static gboolean
 337 gtk_frame_map_callback( GtkWidget*,
 338                         GdkEvent * WXUNUSED(event),
 339                         wxTopLevelWindow *win )
 340 {
 341     const bool wasIconized = win->IsIconized();
 342     win->SetIconizeState(false);
 343     if (wasIconized)
 344     {
 345         // Because GetClientSize() returns (0,0) when IsIconized() is true,
 346         // a size event must be generated, just in case GetClientSize() was
 347         // called while iconized. This specifically happens when restoring a
 348         // tlw that was "rolled up" with some WMs.
 349         // Queue a resize rather than sending size event directly to allow
 350         // children to be made visible first.
 351         win->m_oldClientWidth = 0;
 352         gtk_widget_queue_resize(win->m_wxwindow);
 353     }
 354     // it is possible for m_isShown to be false here, see bug #9909
 355     if (win->wxWindowBase::Show(true))
 356     {
 357         wxShowEvent eventShow(win->GetId(), true);
 358         eventShow.SetEventObject(win);
 359         win->GetEventHandler()->ProcessEvent(eventShow);
 360     }
 361     return false;
 362 }
 363 }
 364
 365 //-----------------------------------------------------------------------------
 366 // "unmap_event" from m_widget
 367 //-----------------------------------------------------------------------------
 368
 369 extern "C" {
 370 static gboolean
 371 gtk_frame_unmap_callback( GtkWidget * WXUNUSED(widget),
 372                           GdkEvent * WXUNUSED(event),
 373                           wxTopLevelWindow *win )
 374 {
 375     win->SetIconizeState(true);
 376     return false;
 377 }
 378 }
 379
 380 //-----------------------------------------------------------------------------
 381
 382 bool wxGetFrameExtents(GdkWindow* window, int* left, int* right, int* top, int* bottom)
 383 {
 384     static GdkAtom property = gdk_atom_intern("_NET_FRAME_EXTENTS", false);
 385     Atom xproperty = gdk_x11_atom_to_xatom_for_display(
 386                         gdk_drawable_get_display(window), property);
 387     Atom type;
 388     int format;
 389     gulong nitems, bytes_after;
 390     guchar* data;
 391     Status status = XGetWindowProperty(
 392         gdk_x11_drawable_get_xdisplay(window),
 393         gdk_x11_drawable_get_xid(window),
 394         xproperty,
 395         0, 4, false, XA_CARDINAL,
 396         &type, &format, &nitems, &bytes_after, &data);
 397     const bool success = status == Success && data && nitems == 4;
 398     if (success)
 399     {
 400         long* p = (long*)data;
 401         if (left)   *left   = int(p[0]);
 402         if (right)  *right  = int(p[1]);
 403         if (top)    *top    = int(p[2]);
 404         if (bottom) *bottom = int(p[3]);
 405     }
 406     if (data)
 407         XFree(data);
 408     return success;
 409 }
 410
 411 //-----------------------------------------------------------------------------
 412 // "property_notify_event" from m_widget
 413 //-----------------------------------------------------------------------------
 414
 415 extern "C" {
 416 static gboolean property_notify_event(
 417     GtkWidget*, GdkEventProperty* event, wxTopLevelWindowGTK* win)
 418 {
 419     // Watch for changes to _NET_FRAME_EXTENTS property
 420     static GdkAtom property = gdk_atom_intern("_NET_FRAME_EXTENTS", false);
 421     if (event->state == GDK_PROPERTY_NEW_VALUE && event->atom == property)
 422     {
 423         int left, right, top, bottom;
 424         if (wxGetFrameExtents(event->window, &left, &right, &top, &bottom))
 425         {
 426             const wxSize decorSize =
 427                 wxSize(left + right, top + bottom);
 428             win->GTKUpdateDecorSize(decorSize);
 429         }
 430     }
 431     return false;
 432 }
 433 }
 434
 435 // ----------------------------------------------------------------------------
 436 // wxTopLevelWindowGTK creation
 437 // ----------------------------------------------------------------------------
 438
 439 void wxTopLevelWindowGTK::Init()
 440 {
 441     m_mainWidget = NULL;
 442     m_isIconized = false;
 443     m_fsIsShowing = false;
 444     m_themeEnabled = true;
 445     m_gdkDecor =
 446     m_gdkFunc = 0;
 447     m_grabbed = false;
 448     m_deferShow = true;
 449     m_updateDecorSize = true;
 450
 451     m_urgency_hint = -2;
 452
 453     m_resizeQueued = false;
 454 }
 455
 456 bool wxTopLevelWindowGTK::Create( wxWindow *parent,
 457                                   wxWindowID id,
 458                                   const wxString& title,
 459                                   const wxPoint& pos,
 460                                   const wxSize& sizeOrig,
 461                                   long style,
 462                                   const wxString &name )
 463 {
 464     // always create a frame of some reasonable, even if arbitrary, size (at
 465     // least for MSW compatibility)
 466     wxSize size = sizeOrig;
 467     size.x = WidthDefault(size.x);
 468     size.y = HeightDefault(size.y);
 469
 470     wxTopLevelWindows.Append( this );
 471
 472     if (!PreCreation( parent, pos, size ) ||
 473         !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
 474     {
 475         wxFAIL_MSG( wxT("wxTopLevelWindowGTK creation failed") );
 476         return false;
 477     }
 478
 479     m_title = title;
 480
 481     // NB: m_widget may be !=NULL if it was created by derived class' Create,
 482     //     e.g. in wxTaskBarIconAreaGTK
 483     if (m_widget == NULL)
 484     {
 485 #if wxUSE_LIBHILDON
 486         // we must create HildonWindow and not a normal GtkWindow as the latter
 487         // doesn't look correctly in Maemo environment and it must also be
 488         // registered with the main program object
 489         m_widget = hildon_window_new();
 490         hildon_program_add_window(wxTheApp->GetHildonProgram(),
 491                                   HILDON_WINDOW(m_widget));
 492 #else // !wxUSE_LIBHILDON
 493         m_widget = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 494         if (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)
 495         {
 496             // Tell WM that this is a dialog window and make it center
 497             // on parent by default (this is what GtkDialog ctor does):
 498             gtk_window_set_type_hint(GTK_WINDOW(m_widget),
 499                                      GDK_WINDOW_TYPE_HINT_DIALOG);
 500             gtk_window_set_position(GTK_WINDOW(m_widget),
 501                                     GTK_WIN_POS_CENTER_ON_PARENT);
 502         }
 503         else
 504         {
 505             if (style & wxFRAME_TOOL_WINDOW)
 506             {
 507                 gtk_window_set_type_hint(GTK_WINDOW(m_widget),
 508                                          GDK_WINDOW_TYPE_HINT_UTILITY);
 509
 510                 // On some WMs, like KDE, a TOOL_WINDOW will still show
 511                 // on the taskbar, but on Gnome a TOOL_WINDOW will not.
 512                 // For consistency between WMs and with Windows, we
 513                 // should set the NO_TASKBAR flag which will apply
 514                 // the set_skip_taskbar_hint if it is available,
 515                 // ensuring no taskbar entry will appear.
 516                 style |= wxFRAME_NO_TASKBAR;
 517             }
 518         }
 519 #endif // wxUSE_LIBHILDON/!wxUSE_LIBHILDON
 520
 521         g_object_ref(m_widget);
 522     }
 523
 524     wxWindow *topParent = wxGetTopLevelParent(m_parent);
 525     if (topParent && (((GTK_IS_WINDOW(topParent->m_widget)) &&
 526                        (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)) ||
 527                        (style & wxFRAME_FLOAT_ON_PARENT)))
 528     {
 529         gtk_window_set_transient_for( GTK_WINDOW(m_widget),
 530                                       GTK_WINDOW(topParent->m_widget) );
 531     }
 532
 533     if (style & wxFRAME_NO_TASKBAR)
 534     {
 535         gtk_window_set_skip_taskbar_hint(GTK_WINDOW(m_widget), TRUE);
 536     }
 537
 538     if (style & wxSTAY_ON_TOP)
 539     {
 540         gtk_window_set_keep_above(GTK_WINDOW(m_widget), TRUE);
 541     }
 542
 543 #if 0
 544     if (!name.empty())
 545         gtk_window_set_role( GTK_WINDOW(m_widget), wxGTK_CONV( name ) );
 546 #endif
 547
 548     gtk_window_set_title( GTK_WINDOW(m_widget), wxGTK_CONV( title ) );
 549     GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 550
 551     g_signal_connect (m_widget, "delete_event",
 552                       G_CALLBACK (gtk_frame_delete_callback), this);
 553
 554     // m_mainWidget is a GtkVBox, holding the bars and client area (m_wxwindow)
 555     m_mainWidget = gtk_vbox_new(false, 0);
 556     gtk_widget_show( m_mainWidget );
 557     GTK_WIDGET_UNSET_FLAGS( m_mainWidget, GTK_CAN_FOCUS );
 558     gtk_container_add( GTK_CONTAINER(m_widget), m_mainWidget );
 559
 560     // m_wxwindow is the client area
 561     m_wxwindow = wxPizza::New();
 562     gtk_widget_show( m_wxwindow );
 563     gtk_container_add( GTK_CONTAINER(m_mainWidget), m_wxwindow );
 564
 565     // we donm't allow the frame to get the focus as otherwise
 566     // the frame will grab it at arbitrary focus changes
 567     GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
 568
 569     if (m_parent) m_parent->AddChild( this );
 570
 571     g_signal_connect(m_wxwindow, "size_allocate",
 572         G_CALLBACK(size_allocate), this);
 573
 574     g_signal_connect (m_widget, "size_request",
 575                       G_CALLBACK (wxgtk_tlw_size_request_callback), this);
 576     PostCreation();
 577
 578     if ((m_x != -1) || (m_y != -1))
 579         gtk_widget_set_uposition( m_widget, m_x, m_y );
 580
 581     //  we cannot set MWM hints and icons before the widget has
 582     //  been realized, so we do this directly after realization
 583     g_signal_connect (m_widget, "realize",
 584                       G_CALLBACK (gtk_frame_realized_callback), this);
 585
 586     // map and unmap for iconized state
 587     g_signal_connect (m_widget, "map_event",
 588                       G_CALLBACK (gtk_frame_map_callback), this);
 589     g_signal_connect (m_widget, "unmap_event",
 590                       G_CALLBACK (gtk_frame_unmap_callback), this);
 591
 592     // for wxMoveEvent
 593     g_signal_connect (m_widget, "configure_event",
 594                       G_CALLBACK (gtk_frame_configure_callback), this);
 595
 596     // activation
 597     g_signal_connect_after (m_widget, "focus_in_event",
 598                       G_CALLBACK (gtk_frame_focus_in_callback), this);
 599     g_signal_connect_after (m_widget, "focus_out_event",
 600                       G_CALLBACK (gtk_frame_focus_out_callback), this);
 601
 602     gtk_widget_add_events(m_widget, GDK_PROPERTY_CHANGE_MASK);
 603     g_signal_connect(m_widget, "property_notify_event",
 604         G_CALLBACK(property_notify_event), this);
 605
 606     // translate wx decorations styles into Motif WM hints (they are recognized
 607     // by other WMs as well)
 608
 609     // always enable moving the window as we have no separate flag for enabling
 610     // it
 611     m_gdkFunc = GDK_FUNC_MOVE;
 612
 613     if ( style & wxCLOSE_BOX )
 614         m_gdkFunc |= GDK_FUNC_CLOSE;
 615
 616     if ( style & wxMINIMIZE_BOX )
 617         m_gdkFunc |= GDK_FUNC_MINIMIZE;
 618
 619     if ( style & wxMAXIMIZE_BOX )
 620         m_gdkFunc |= GDK_FUNC_MAXIMIZE;
 621
 622     if ( (style & wxSIMPLE_BORDER) || (style & wxNO_BORDER) )
 623     {
 624         m_gdkDecor = 0;
 625     }
 626     else // have border
 627     {
 628         m_gdkDecor = GDK_DECOR_BORDER;
 629
 630         if ( style & wxCAPTION )
 631             m_gdkDecor |= GDK_DECOR_TITLE;
 632
 633         if ( style & wxSYSTEM_MENU )
 634             m_gdkDecor |= GDK_DECOR_MENU;
 635
 636         if ( style & wxMINIMIZE_BOX )
 637             m_gdkDecor |= GDK_DECOR_MINIMIZE;
 638
 639         if ( style & wxMAXIMIZE_BOX )
 640             m_gdkDecor |= GDK_DECOR_MAXIMIZE;
 641
 642         if ( style & wxRESIZE_BORDER )
 643         {
 644            m_gdkFunc |= GDK_FUNC_RESIZE;
 645            m_gdkDecor |= GDK_DECOR_RESIZEH;
 646         }
 647     }
 648
 649     m_decorSize = GetCachedDecorSize();
 650     int w, h;
 651     GTKDoGetSize(&w, &h);
 652     gtk_window_set_default_size(GTK_WINDOW(m_widget), w, h);
 653
 654     return true;
 655 }
 656
 657 wxTopLevelWindowGTK::~wxTopLevelWindowGTK()
 658 {
 659 #if wxUSE_LIBHILDON
 660     // it can also be a (standard) dialog
 661     if ( HILDON_IS_WINDOW(m_widget) )
 662     {
 663         hildon_program_remove_window(wxTheApp->GetHildonProgram(),
 664                                      HILDON_WINDOW(m_widget));
 665     }
 666 #endif // wxUSE_LIBHILDON
 667
 668     if (m_grabbed)
 669     {
 670         wxFAIL_MSG(_T("Window still grabbed"));
 671         RemoveGrab();
 672     }
 673
 674     SendDestroyEvent();
 675
 676     // it may also be GtkScrolledWindow in the case of an MDI child
 677     if (GTK_IS_WINDOW(m_widget))
 678     {
 679         gtk_window_set_focus( GTK_WINDOW(m_widget), NULL );
 680     }
 681
 682     if (g_activeFrame == this)
 683         g_activeFrame = NULL;
 684     if (g_lastActiveFrame == this)
 685         g_lastActiveFrame = NULL;
 686 }
 687
 688 bool wxTopLevelWindowGTK::EnableCloseButton( bool enable )
 689 {
 690     if (enable)
 691         m_gdkFunc |= GDK_FUNC_CLOSE;
 692     else
 693         m_gdkFunc &= ~GDK_FUNC_CLOSE;
 694
 695     if (GTK_WIDGET_REALIZED(m_widget) && (m_widget->window))
 696         gdk_window_set_functions( m_widget->window, (GdkWMFunction)m_gdkFunc );
 697
 698     return true;
 699 }
 700
 701 bool wxTopLevelWindowGTK::ShowFullScreen(bool show, long)
 702 {
 703     if (show == m_fsIsShowing)
 704         return false; // return what?
 705
 706     m_fsIsShowing = show;
 707
 708     wxX11FullScreenMethod method =
 709         wxGetFullScreenMethodX11((WXDisplay*)GDK_DISPLAY(),
 710                                  (WXWindow)GDK_ROOT_WINDOW());
 711
 712     // NB: gtk_window_fullscreen() uses freedesktop.org's WMspec extensions
 713     //     to switch to fullscreen, which is not always available. We must
 714     //     check if WM supports the spec and use legacy methods if it
 715     //     doesn't.
 716     if ( method == wxX11_FS_WMSPEC )
 717     {
 718         if (show)
 719             gtk_window_fullscreen( GTK_WINDOW( m_widget ) );
 720         else
 721             gtk_window_unfullscreen( GTK_WINDOW( m_widget ) );
 722     }
 723     else
 724     {
 725         GdkWindow *window = m_widget->window;
 726
 727         if (show)
 728         {
 729             GetPosition( &m_fsSaveFrame.x, &m_fsSaveFrame.y );
 730             GetSize( &m_fsSaveFrame.width, &m_fsSaveFrame.height );
 731
 732             int screen_width,screen_height;
 733             wxDisplaySize( &screen_width, &screen_height );
 734
 735             gint client_x, client_y, root_x, root_y;
 736             gint width, height;
 737
 738             m_fsSaveGdkFunc = m_gdkFunc;
 739             m_fsSaveGdkDecor = m_gdkDecor;
 740             m_gdkFunc = m_gdkDecor = 0;
 741             gdk_window_set_decorations(window, (GdkWMDecoration)0);
 742             gdk_window_set_functions(window, (GdkWMFunction)0);
 743
 744             gdk_window_get_origin (m_widget->window, &root_x, &root_y);
 745             gdk_window_get_geometry (m_widget->window, &client_x, &client_y,
 746                          &width, &height, NULL);
 747
 748             gdk_window_move_resize (m_widget->window, -client_x, -client_y,
 749                         screen_width + 1, screen_height + 1);
 750
 751             wxSetFullScreenStateX11((WXDisplay*)GDK_DISPLAY(),
 752                                     (WXWindow)GDK_ROOT_WINDOW(),
 753                                     (WXWindow)GDK_WINDOW_XWINDOW(window),
 754                                     show, &m_fsSaveFrame, method);
 755         }
 756         else // hide
 757         {
 758             m_gdkFunc = m_fsSaveGdkFunc;
 759             m_gdkDecor = m_fsSaveGdkDecor;
 760             gdk_window_set_decorations(window, (GdkWMDecoration)m_gdkDecor);
 761             gdk_window_set_functions(window, (GdkWMFunction)m_gdkFunc);
 762
 763             wxSetFullScreenStateX11((WXDisplay*)GDK_DISPLAY(),
 764                                     (WXWindow)GDK_ROOT_WINDOW(),
 765                                     (WXWindow)GDK_WINDOW_XWINDOW(window),
 766                                     show, &m_fsSaveFrame, method);
 767
 768             SetSize(m_fsSaveFrame.x, m_fsSaveFrame.y,
 769                     m_fsSaveFrame.width, m_fsSaveFrame.height);
 770         }
 771     }
 772
 773     // documented behaviour is to show the window if it's still hidden when
 774     // showing it full screen
 775     if (show)
 776         Show();
 777
 778     return true;
 779 }
 780
 781 // ----------------------------------------------------------------------------
 782 // overridden wxWindow methods
 783 // ----------------------------------------------------------------------------
 784
 785 bool wxTopLevelWindowGTK::Show( bool show )
 786 {
 787     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
 788
 789     bool deferShow = show && !m_isShown && m_deferShow;
 790     if (deferShow)
 791     {
 792         deferShow = false;
 793         if (!GTK_WIDGET_REALIZED(m_widget) &&
 794             g_signal_handler_find(m_widget,
 795                 GSignalMatchType(G_SIGNAL_MATCH_ID | G_SIGNAL_MATCH_DATA),
 796                 g_signal_lookup("property_notify_event", GTK_TYPE_WIDGET),
 797                 0, NULL, NULL, this))
 798         {
 799             if (gdk_x11_screen_supports_net_wm_hint(
 800                 gtk_widget_get_screen(m_widget),
 801                 gdk_atom_intern("_NET_REQUEST_FRAME_EXTENTS", false)))
 802             {
 803                 deferShow = true;
 804             }
 805             else
 806             {
 807                 // Don't allow changes to m_decorSize, it breaks saving/restoring
 808                 // window size with GetSize()/SetSize() because it makes window
 809                 // bigger between each restore and save.
 810                 m_updateDecorSize = false;
 811             }
 812         }
 813         m_deferShow = deferShow;
 814     }
 815     if (deferShow)
 816     {
 817         // Initial show. If WM supports _NET_REQUEST_FRAME_EXTENTS, defer
 818         // calling gtk_widget_show() until _NET_FRAME_EXTENTS property
 819         // notification is received, so correct frame extents are known.
 820         // This allows resizing m_widget to keep the overall size in sync with
 821         // what wxWidgets expects it to be without an obvious change in the
 822         // window size immediately after it becomes visible.
 823
 824         // Realize m_widget, so m_widget->window can be used. Realizing normally
 825         // causes the widget tree to be size_allocated, which generates size
 826         // events in the wrong order. However, the size_allocates will not be
 827         // done if the allocation is not the default (1,1).
 828         const int alloc_width = m_widget->allocation.width;
 829         if (alloc_width == 1)
 830             m_widget->allocation.width = 2;
 831         gtk_widget_realize(m_widget);
 832         if (alloc_width == 1)
 833             m_widget->allocation.width = 1;
 834
 835         // send _NET_REQUEST_FRAME_EXTENTS
 836         XClientMessageEvent xevent;
 837         memset(&xevent, 0, sizeof(xevent));
 838         xevent.type = ClientMessage;
 839         xevent.window = gdk_x11_drawable_get_xid(m_widget->window);
 840         xevent.message_type = gdk_x11_atom_to_xatom_for_display(
 841             gdk_drawable_get_display(m_widget->window),
 842             gdk_atom_intern("_NET_REQUEST_FRAME_EXTENTS", false));
 843         xevent.format = 32;
 844         Display* display = gdk_x11_drawable_get_xdisplay(m_widget->window);
 845         XSendEvent(display, DefaultRootWindow(display), false,
 846             SubstructureNotifyMask | SubstructureRedirectMask,
 847             (XEvent*)&xevent);
 848
 849         // defer calling gtk_widget_show()
 850         m_isShown = true;
 851         return true;
 852     }
 853
 854     if (show && !GTK_WIDGET_REALIZED(m_widget))
 855     {
 856         // size_allocate signals occur in reverse order (bottom to top).
 857         // Things work better if the initial wxSizeEvents are sent (from the
 858         // top down), before the initial size_allocate signals occur.
 859         wxSizeEvent event(GetSize(), GetId());
 860         event.SetEventObject(this);
 861         HandleWindowEvent(event);
 862     }
 863
 864     bool change = wxTopLevelWindowBase::Show(show);
 865
 866     if (change && !show)
 867     {
 868         // make sure window has a non-default position, so when it is shown
 869         // again, it won't be repositioned by WM as if it were a new window
 870         // Note that this must be done _after_ the window is hidden.
 871         gtk_window_move((GtkWindow*)m_widget, m_x, m_y);
 872     }
 873
 874     return change;
 875 }
 876
 877 void wxTopLevelWindowGTK::Raise()
 878 {
 879     gtk_window_present( GTK_WINDOW( m_widget ) );
 880 }
 881
 882 void wxTopLevelWindowGTK::DoMoveWindow(int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(width), int WXUNUSED(height) )
 883 {
 884     wxFAIL_MSG( wxT("DoMoveWindow called for wxTopLevelWindowGTK") );
 885 }
 886
 887 // ----------------------------------------------------------------------------
 888 // window geometry
 889 // ----------------------------------------------------------------------------
 890
 891 void wxTopLevelWindowGTK::GTKDoGetSize(int *width, int *height) const
 892 {
 893     wxSize size(m_width, m_height);
 894     size -= m_decorSize;
 895     if (size.x < 0) size.x = 0;
 896     if (size.y < 0) size.y = 0;
 897     if (width)  *width  = size.x;
 898     if (height) *height = size.y;
 899 }
 900
 901 void wxTopLevelWindowGTK::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 902 {
 903     wxCHECK_RET( m_widget, wxT("invalid frame") );
 904
 905     // deal with the position first
 906     int old_x = m_x;
 907     int old_y = m_y;
 908
 909     if ( !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE) )
 910     {
 911         // -1 means "use existing" unless the flag above is specified
 912         if ( x != -1 )
 913             m_x = x;
 914         if ( y != -1 )
 915             m_y = y;
 916     }
 917     else // wxSIZE_ALLOW_MINUS_ONE
 918     {
 919         m_x = x;
 920         m_y = y;
 921     }
 922
 923     if ( m_x != old_x || m_y != old_y )
 924     {
 925         gtk_window_move( GTK_WINDOW(m_widget), m_x, m_y );
 926     }
 927
 928     const wxSize oldSize(m_width, m_height);
 929     if (width >= 0)
 930         m_width = width;
 931     if (height >= 0)
 932         m_height = height;
 933     ConstrainSize();
 934     if (m_width != oldSize.x || m_height != oldSize.y)
 935     {
 936         int w, h;
 937         GTKDoGetSize(&w, &h);
 938         gtk_window_resize(GTK_WINDOW(m_widget), w, h);
 939
 940         GetClientSize(&m_oldClientWidth, &m_oldClientHeight);
 941         wxSizeEvent event(GetSize(), GetId());
 942         event.SetEventObject(this);
 943         HandleWindowEvent(event);
 944     }
 945 }
 946
 947 void wxTopLevelWindowGTK::DoSetClientSize(int width, int height)
 948 {
 949     if (m_deferShow && !m_isShown)
 950         // Since client size is being explicitly set, don't change it later
 951         m_deferShow = false;
 952     wxTopLevelWindowBase::DoSetClientSize(width, height);
 953 }
 954
 955 void wxTopLevelWindowGTK::DoGetClientSize( int *width, int *height ) const
 956 {
 957     wxASSERT_MSG(m_widget, wxT("invalid frame"));
 958
 959     if ( IsIconized() )
 960     {
 961         // for consistency with wxMSW, client area is supposed to be empty for
 962         // the iconized windows
 963         if ( width )
 964             *width = 0;
 965         if ( height )
 966             *height = 0;
 967     }
 968     else
 969     {
 970         GTKDoGetSize(width, height);
 971     }
 972 }
 973
 974 void wxTopLevelWindowGTK::DoSetSizeHints( int minW, int minH,
 975                                           int maxW, int maxH,
 976                                           int incW, int incH )
 977 {
 978     wxTopLevelWindowBase::DoSetSizeHints( minW, minH, maxW, maxH, incW, incH );
 979
 980     const wxSize minSize = GetMinSize();
 981     const wxSize maxSize = GetMaxSize();
 982     GdkGeometry hints;
 983     int hints_mask = 0;
 984     if (minSize.x > 0 || minSize.y > 0)
 985     {
 986         hints_mask |= GDK_HINT_MIN_SIZE;
 987         hints.min_width = minSize.x - m_decorSize.x;
 988         if (hints.min_width < 0)
 989             hints.min_width = 0;
 990         hints.min_height = minSize.y - m_decorSize.y;
 991         if (hints.min_height < 0)
 992             hints.min_height = 0;
 993     }
 994     if (maxSize.x > 0 || maxSize.y > 0)
 995     {
 996         hints_mask |= GDK_HINT_MAX_SIZE;
 997         hints.max_width = maxSize.x - m_decorSize.x;
 998         if (hints.max_width < 0)
 999             hints.max_width = INT_MAX;
1000         hints.max_height = maxSize.y - m_decorSize.y;
1001         if (hints.max_height < 0)
1002             hints.max_height = INT_MAX;
1003     }
1004     if (incW > 0 || incH > 0)
1005     {
1006         hints_mask |= GDK_HINT_RESIZE_INC;
1007         hints.width_inc  = incW > 0 ? incW : 1;
1008         hints.height_inc = incH > 0 ? incH : 1;
1009     }
1010     gtk_window_set_geometry_hints(
1011         (GtkWindow*)m_widget, NULL, &hints, (GdkWindowHints)hints_mask);
1012 }
1013
1014 void wxTopLevelWindowGTK::GTKUpdateDecorSize(const wxSize& decorSize)
1015 {
1016     if (!IsMaximized() && !IsFullScreen())
1017         GetCachedDecorSize() = decorSize;
1018     if (m_updateDecorSize && m_decorSize != decorSize)
1019     {
1020         const wxSize diff = decorSize - m_decorSize;
1021         m_decorSize = decorSize;
1022         bool resized = false;
1023         if (m_deferShow)
1024         {
1025             // keep overall size unchanged by shrinking m_widget
1026             int w, h;
1027             GTKDoGetSize(&w, &h);
1028             // but not if size would be less than minimum, it won't take effect
1029             const wxSize minSize = GetMinSize();
1030             if (w >= minSize.x && h >= minSize.y)
1031             {
1032                 gtk_window_resize(GTK_WINDOW(m_widget), w, h);
1033                 resized = true;
1034             }
1035         }
1036         if (!resized)
1037         {
1038             // adjust overall size to match change in frame extents
1039             m_width  += diff.x;
1040             m_height += diff.y;
1041             if (m_width  < 0) m_width  = 0;
1042             if (m_height < 0) m_height = 0;
1043             m_oldClientWidth = 0;
1044             gtk_widget_queue_resize(m_wxwindow);
1045         }
1046     }
1047     if (m_deferShow)
1048     {
1049         // gtk_widget_show() was deferred, do it now
1050         m_deferShow = false;
1051         GetClientSize(&m_oldClientWidth, &m_oldClientHeight);
1052         wxSizeEvent sizeEvent(GetSize(), GetId());
1053         sizeEvent.SetEventObject(this);
1054         HandleWindowEvent(sizeEvent);
1055
1056         gtk_widget_show(m_widget);
1057
1058         wxShowEvent showEvent(GetId(), true);
1059         showEvent.SetEventObject(this);
1060         HandleWindowEvent(showEvent);
1061     }
1062 }
1063
1064 wxSize& wxTopLevelWindowGTK::GetCachedDecorSize()
1065 {
1066     static wxSize size[8];
1067
1068     int index = 0;
1069     // title bar
1070     if (m_gdkDecor & (GDK_DECOR_MENU | GDK_DECOR_MINIMIZE | GDK_DECOR_MAXIMIZE | GDK_DECOR_TITLE))
1071         index = 1;
1072     // border
1073     if (m_gdkDecor & GDK_DECOR_BORDER)
1074         index |= 2;
1075     // utility window decor can be different
1076     if (m_windowStyle & wxFRAME_TOOL_WINDOW)
1077         index |= 4;
1078     return size[index];
1079 }
1080
1081 void wxTopLevelWindowGTK::OnInternalIdle()
1082 {
1083     wxWindow::OnInternalIdle();
1084
1085     // Synthetize activate events.
1086     if ( g_sendActivateEvent != -1 )
1087     {
1088         bool activate = g_sendActivateEvent != 0;
1089
1090         // if (!activate) wxPrintf( wxT("de") );
1091         // wxPrintf( wxT("activate\n") );
1092
1093         // do it only once
1094         g_sendActivateEvent = -1;
1095
1096         wxTheApp->SetActive(activate, (wxWindow *)g_lastActiveFrame);
1097     }
1098
1099     if (m_resizeQueued)
1100     {
1101         wxSize size( m_width, m_height );
1102         wxSizeEvent event(size, GetId());
1103         event.SetEventObject(this);
1104         HandleWindowEvent(event);
1105         m_resizeQueued = false;
1106     }
1107 }
1108
1109 // ----------------------------------------------------------------------------
1110 // frame title/icon
1111 // ----------------------------------------------------------------------------
1112
1113 void wxTopLevelWindowGTK::SetTitle( const wxString &title )
1114 {
1115     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
1116
1117     if ( title == m_title )
1118         return;
1119
1120     m_title = title;
1121
1122     gtk_window_set_title( GTK_WINDOW(m_widget), wxGTK_CONV( title ) );
1123 }
1124
1125 void wxTopLevelWindowGTK::SetIcons( const wxIconBundle &icons )
1126 {
1127     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
1128
1129     wxTopLevelWindowBase::SetIcons( icons );
1130
1131     // Setting icons before window is realized can cause a GTK assertion if
1132     // another TLW is realized before this one, and it has this one as it's
1133     // transient parent. The life demo exibits this problem.
1134     if (GTK_WIDGET_REALIZED(m_widget))
1135     {
1136         GList* list = NULL;
1137         for (size_t i = icons.GetIconCount(); i--;)
1138             list = g_list_prepend(list, icons.GetIconByIndex(i).GetPixbuf());
1139         gtk_window_set_icon_list(GTK_WINDOW(m_widget), list);
1140         g_list_free(list);
1141     }
1142 }
1143
1144 // ----------------------------------------------------------------------------
1145 // frame state: maximized/iconized/normal
1146 // ----------------------------------------------------------------------------
1147
1148 void wxTopLevelWindowGTK::Maximize(bool maximize)
1149 {
1150     if (maximize)
1151         gtk_window_maximize( GTK_WINDOW( m_widget ) );
1152     else
1153         gtk_window_unmaximize( GTK_WINDOW( m_widget ) );
1154 }
1155
1156 bool wxTopLevelWindowGTK::IsMaximized() const
1157 {
1158     if(!m_widget->window)
1159         return false;
1160
1161     return gdk_window_get_state(m_widget->window) & GDK_WINDOW_STATE_MAXIMIZED;
1162 }
1163
1164 void wxTopLevelWindowGTK::Restore()
1165 {
1166     // "Present" seems similar enough to "restore"
1167     gtk_window_present( GTK_WINDOW( m_widget ) );
1168 }
1169
1170 void wxTopLevelWindowGTK::Iconize( bool iconize )
1171 {
1172     if (iconize)
1173         gtk_window_iconify( GTK_WINDOW( m_widget ) );
1174     else
1175         gtk_window_deiconify( GTK_WINDOW( m_widget ) );
1176 }
1177
1178 bool wxTopLevelWindowGTK::IsIconized() const
1179 {
1180     return m_isIconized;
1181 }
1182
1183 void wxTopLevelWindowGTK::SetIconizeState(bool iconize)
1184 {
1185     if ( iconize != m_isIconized )
1186     {
1187         m_isIconized = iconize;
1188         (void)SendIconizeEvent(iconize);
1189     }
1190 }
1191
1192 void wxTopLevelWindowGTK::AddGrab()
1193 {
1194     if (!m_grabbed)
1195     {
1196         m_grabbed = true;
1197         gtk_grab_add( m_widget );
1198         wxGUIEventLoop().Run();
1199         gtk_grab_remove( m_widget );
1200     }
1201 }
1202
1203 void wxTopLevelWindowGTK::RemoveGrab()
1204 {
1205     if (m_grabbed)
1206     {
1207         gtk_main_quit();
1208         m_grabbed = false;
1209     }
1210 }
1211
1212
1213 // helper
1214 static bool do_shape_combine_region(GdkWindow* window, const wxRegion& region)
1215 {
1216     if (window)
1217     {
1218         if (region.IsEmpty())
1219         {
1220             gdk_window_shape_combine_mask(window, NULL, 0, 0);
1221         }
1222         else
1223         {
1224             gdk_window_shape_combine_region(window, region.GetRegion(), 0, 0);
1225             return true;
1226         }
1227     }
1228     return false;
1229 }
1230
1231
1232 bool wxTopLevelWindowGTK::SetShape(const wxRegion& region)
1233 {
1234     wxCHECK_MSG( HasFlag(wxFRAME_SHAPED), false,
1235                  _T("Shaped windows must be created with the wxFRAME_SHAPED style."));
1236
1237     if ( GTK_WIDGET_REALIZED(m_widget) )
1238     {
1239         if ( m_wxwindow )
1240             do_shape_combine_region(m_wxwindow->window, region);
1241
1242         return do_shape_combine_region(m_widget->window, region);
1243     }
1244     else // not realized yet
1245     {
1246         // store the shape to set, it will be really set once we're realized
1247         m_shape = region;
1248
1249         // we don't know if we're going to succeed or fail, be optimistic by
1250         // default
1251         return true;
1252     }
1253 }
1254
1255 bool wxTopLevelWindowGTK::IsActive()
1256 {
1257     return (this == (wxTopLevelWindowGTK*)g_activeFrame);
1258 }
1259
1260 void wxTopLevelWindowGTK::RequestUserAttention(int flags)
1261 {
1262     bool new_hint_value = false;
1263
1264     // FIXME: This is a workaround to focus handling problem
1265     // If RequestUserAttention is called for example right after a wxSleep, OnInternalIdle hasn't
1266     // yet been processed, and the internal focus system is not up to date yet.
1267     // wxYieldIfNeeded ensures the processing of it, but can have unwanted side effects - MR
1268     ::wxYieldIfNeeded();
1269
1270     if(m_urgency_hint >= 0)
1271         g_source_remove(m_urgency_hint);
1272
1273     m_urgency_hint = -2;
1274
1275     if( GTK_WIDGET_REALIZED(m_widget) && !IsActive() )
1276     {
1277         new_hint_value = true;
1278
1279         if (flags & wxUSER_ATTENTION_INFO)
1280         {
1281             m_urgency_hint = g_timeout_add(5000, (GSourceFunc)gtk_frame_urgency_timer_callback, this);
1282         } else {
1283             m_urgency_hint = -1;
1284         }
1285     }
1286
1287 #if GTK_CHECK_VERSION(2,7,0)
1288     if(!gtk_check_version(2,7,0))
1289         gtk_window_set_urgency_hint(GTK_WINDOW( m_widget ), new_hint_value);
1290     else
1291 #endif
1292         wxgtk_window_set_urgency_hint(GTK_WINDOW( m_widget ), new_hint_value);
1293 }
1294
1295 void wxTopLevelWindowGTK::SetWindowStyleFlag( long style )
1296 {
1297     // Store which styles were changed
1298     long styleChanges = style ^ m_windowStyle;
1299
1300     // Process wxWindow styles. This also updates the internal variable
1301     // Therefore m_windowStyle bits carry now the _new_ style values
1302     wxWindow::SetWindowStyleFlag(style);
1303
1304     // just return for now if widget does not exist yet
1305     if (!m_widget)
1306         return;
1307
1308     if ( styleChanges & wxSTAY_ON_TOP )
1309     {
1310         gtk_window_set_keep_above(GTK_WINDOW(m_widget),
1311                                   m_windowStyle & wxSTAY_ON_TOP);
1312     }
1313
1314     if ( styleChanges & wxFRAME_NO_TASKBAR )
1315     {
1316         gtk_window_set_skip_taskbar_hint(GTK_WINDOW(m_widget),
1317                                          m_windowStyle & wxFRAME_NO_TASKBAR);
1318     }
1319 }
1320
1321 /* Get the X Window between child and the root window.
1322    This should usually be the WM managed XID */
1323 static Window wxGetTopmostWindowX11(Display *dpy, Window child)
1324 {
1325     Window root, parent;
1326     Window* children;
1327     unsigned int nchildren;
1328
1329     XQueryTree(dpy, child, &root, &parent, &children, &nchildren);
1330     XFree(children);
1331
1332     while (parent != root) {
1333         child = parent;
1334         XQueryTree(dpy, child, &root, &parent, &children, &nchildren);
1335         XFree(children);
1336     }
1337
1338     return child;
1339 }
1340
1341 bool wxTopLevelWindowGTK::SetTransparent(wxByte alpha)
1342 {
1343     if (!m_widget || !m_widget->window)
1344         return false;
1345
1346     Display* dpy = GDK_WINDOW_XDISPLAY (m_widget->window);
1347     // We need to get the X Window that has the root window as the immediate parent
1348     // and m_widget->window as a child. This should be the X Window that the WM manages and
1349     // from which the opacity property is checked from.
1350     Window win = wxGetTopmostWindowX11(dpy, GDK_WINDOW_XID (m_widget->window));
1351
1352
1353     // Using pure Xlib to not have a GTK version check mess due to gtk2.0 not having GdkDisplay
1354     if (alpha == 0xff)
1355         XDeleteProperty(dpy, win, XInternAtom(dpy, "_NET_WM_WINDOW_OPACITY", False));
1356     else
1357     {
1358         long opacity = alpha * 0x1010101L;
1359         XChangeProperty(dpy, win, XInternAtom(dpy, "_NET_WM_WINDOW_OPACITY", False),
1360                         XA_CARDINAL, 32, PropModeReplace,
1361                         (unsigned char *) &opacity, 1L);
1362     }
1363     XSync(dpy, False);
1364     return true;
1365 }
1366
1367 bool wxTopLevelWindowGTK::CanSetTransparent()
1368 {
1369     // allow to override automatic detection as it's far from perfect
1370     static const wxChar *SYSOPT_TRANSPARENT = wxT("gtk.tlw.can-set-transparent");
1371     if ( wxSystemOptions::HasOption(SYSOPT_TRANSPARENT) )
1372     {
1373         return wxSystemOptions::GetOptionInt(SYSOPT_TRANSPARENT) != 0;
1374     }
1375
1376 #if GTK_CHECK_VERSION(2,10,0)
1377     if (!gtk_check_version(2,10,0))
1378     {
1379         return (gtk_widget_is_composited (m_widget));
1380     }
1381     else
1382 #endif // In case of lower versions than gtk+-2.10.0 we could look for _NET_WM_CM_Sn ourselves
1383     {
1384         return false;
1385     }
1386
1387 #if 0 // Don't be optimistic here for the sake of wxAUI
1388     int opcode, event, error;
1389     // Check for the existence of a RGBA visual instead?
1390     return XQueryExtension(gdk_x11_get_default_xdisplay (),
1391                            "Composite", &opcode, &event, &error);
1392 #endif
1393 }