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