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