src/x11/toplevel.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        x11/toplevel.cpp
   3 // Purpose:     implements wxTopLevelWindow for X11
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     24.09.01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2002 Julian Smart
   9 // License:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "toplevel.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/app.h"
  33     #include "wx/toplevel.h"
  34     #include "wx/string.h"
  35     #include "wx/log.h"
  36     #include "wx/intl.h"
  37     #include "wx/frame.h"
  38     #include "wx/menu.h"
  39     #include "wx/statusbr.h"
  40 #endif //WX_PRECOMP
  41
  42 #include "wx/settings.h"
  43 #include "wx/x11/private.h"
  44 #include "X11/Xutil.h"
  45
  46 bool wxMWMIsRunning(Window w);
  47
  48 // ----------------------------------------------------------------------------
  49 // wxTopLevelWindowX11 creation
  50 // ----------------------------------------------------------------------------
  51
  52 void wxTopLevelWindowX11::Init()
  53 {
  54     m_iconized =
  55     m_maximizeOnShow = FALSE;
  56
  57     // unlike (almost?) all other windows, frames are created hidden
  58     m_isShown = FALSE;
  59
  60     // Data to save/restore when calling ShowFullScreen
  61     m_fsStyle = 0;
  62     m_fsIsMaximized = FALSE;
  63     m_fsIsShowing = FALSE;
  64
  65     m_needResizeInIdle = FALSE;
  66 }
  67
  68 bool wxTopLevelWindowX11::Create(wxWindow *parent,
  69                                  wxWindowID id,
  70                                  const wxString& title,
  71                                  const wxPoint& pos,
  72                                  const wxSize& size,
  73                                  long style,
  74                                  const wxString& name)
  75 {
  76     // init our fields
  77     Init();
  78
  79     m_windowStyle = style;
  80     m_parent = parent;
  81
  82     SetName(name);
  83
  84     m_windowId = id == -1 ? NewControlId() : id;
  85
  86     if (parent)
  87         parent->AddChild(this);
  88
  89     wxTopLevelWindows.Append(this);
  90
  91     Display *xdisplay = wxGlobalDisplay();
  92     int xscreen = DefaultScreen( xdisplay );
  93     Visual *xvisual = DefaultVisual( xdisplay, xscreen );
  94     Window xparent = RootWindow( xdisplay, xscreen );
  95     Colormap cm = DefaultColormap( xdisplay, xscreen );
  96
  97     if (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)
  98         m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
  99     else
 100         m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE);
 101     m_backgroundColour.CalcPixel( (WXColormap) cm );
 102     m_hasBgCol = TRUE;
 103
 104     wxSize size2(size);
 105     if (size2.x == -1)
 106         size2.x = 100;
 107     if (size2.y == -1)
 108         size2.y = 100;
 109
 110     wxPoint pos2(pos);
 111     if (pos2.x == -1)
 112         pos2.x = 100;
 113     if (pos2.y == -1)
 114         pos2.y = 100;
 115
 116 #if !wxUSE_NANOX
 117     XSetWindowAttributes xattributes;
 118     XSizeHints size_hints;
 119
 120     long xattributes_mask =
 121         CWOverrideRedirect |
 122         CWBorderPixel | CWBackPixel;
 123
 124     xattributes.background_pixel = m_backgroundColour.GetPixel();
 125     xattributes.border_pixel = BlackPixel( xdisplay, xscreen );
 126
 127     // TODO: if we want no border, caption etc.,
 128     // I think we set this to True to remove decorations
 129     // No. RR.
 130     // Yes :-) JACS (because some WMs don't respect
 131     // the hints)
 132     xattributes.override_redirect = (style & wxNO_BORDER) ? True : False;
 133 #endif
 134
 135 #if wxUSE_NANOX
 136     long backColor, foreColor;
 137     backColor = GR_RGB(m_backgroundColour.Red(), m_backgroundColour.Green(), m_backgroundColour.Blue());
 138     foreColor = GR_RGB(m_foregroundColour.Red(), m_foregroundColour.Green(), m_foregroundColour.Blue());
 139
 140     Window xwindow = XCreateWindowWithColor( xdisplay, xparent, pos2.x, pos2.y, size2.x, size2.y,
 141                                     0, 0, InputOutput, xvisual, backColor, foreColor);
 142 #else
 143     Window xwindow = XCreateWindow( xdisplay, xparent, pos2.x, pos2.y, size2.x, size2.y,
 144                                     0, DefaultDepth(xdisplay,xscreen), InputOutput, xvisual, xattributes_mask, &xattributes );
 145 #endif
 146     m_mainWidget = (WXWindow) xwindow;
 147
 148     int extraFlags = 0;
 149 #if wxUSE_NANOX
 150     extraFlags |= GR_EVENT_MASK_CLOSE_REQ;
 151 #endif
 152
 153     XSelectInput( xdisplay, xwindow,
 154                   extraFlags |
 155                   ExposureMask |
 156                   KeyPressMask |
 157                   KeyReleaseMask |
 158                   ButtonPressMask |
 159                   ButtonReleaseMask |
 160                   ButtonMotionMask |
 161                   EnterWindowMask |
 162                   LeaveWindowMask |
 163                   PointerMotionMask |
 164                   KeymapStateMask |
 165                   FocusChangeMask |
 166                   ColormapChangeMask |
 167                   StructureNotifyMask |
 168                   PropertyChangeMask
 169                   );
 170
 171     wxAddWindowToTable( xwindow, (wxWindow*) this );
 172
 173     // Set background to None which will prevent X11 from clearing the
 174     // background completely.
 175     XSetWindowBackgroundPixmap( xdisplay, xwindow, None );
 176
 177 #if !wxUSE_NANOX
 178     if (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)
 179     {
 180         if (GetParent() && GetParent()->GetMainWindow())
 181         {
 182              Window xparentwindow = (Window) GetParent()->GetMainWindow();
 183              XSetTransientForHint( xdisplay, xwindow, xparentwindow );
 184         }
 185     }
 186
 187     size_hints.flags = PSize | PPosition;
 188     size_hints.x = pos2.x;
 189     size_hints.y = pos2.y;
 190     size_hints.width = size2.x;
 191     size_hints.height = size2.y;
 192     XSetWMNormalHints( xdisplay, xwindow, &size_hints);
 193
 194     XWMHints wm_hints;
 195     wm_hints.flags = InputHint | StateHint /* | WindowGroupHint */;
 196     wm_hints.input = True;
 197     wm_hints.initial_state = NormalState;
 198     XSetWMHints( xdisplay, xwindow, &wm_hints);
 199
 200     Atom wm_protocols[2];
 201     wm_protocols[0] = XInternAtom( xdisplay, "WM_DELETE_WINDOW", False );
 202     wm_protocols[1] = XInternAtom( xdisplay, "WM_TAKE_FOCUS", False );
 203     XSetWMProtocols( xdisplay, xwindow, wm_protocols, 2);
 204 #endif
 205
 206     wxSetWMDecorations( xwindow, style);
 207
 208     SetTitle(title);
 209
 210     return TRUE;
 211 }
 212
 213 wxTopLevelWindowX11::~wxTopLevelWindowX11()
 214 {
 215     wxTopLevelWindows.DeleteObject(this);
 216
 217     // If this is the last top-level window, exit.
 218     if ( wxTheApp && (wxTopLevelWindows.Number() == 0) )
 219     {
 220         wxTheApp->SetTopWindow(NULL);
 221
 222         if (wxTheApp->GetExitOnFrameDelete())
 223         {
 224             // Signal to the app that we're going to close
 225             wxTheApp->ExitMainLoop();
 226         }
 227     }
 228 }
 229
 230 void wxTopLevelWindowX11::OnInternalIdle()
 231 {
 232     wxWindow::OnInternalIdle();
 233
 234     if (m_needResizeInIdle)
 235     {
 236         wxSizeEvent event( GetClientSize(), GetId() );
 237         event.SetEventObject( this );
 238         GetEventHandler()->ProcessEvent( event );
 239
 240         m_needResizeInIdle = FALSE;
 241     }
 242 }
 243
 244 // ----------------------------------------------------------------------------
 245 // wxTopLevelWindowX11 showing
 246 // ----------------------------------------------------------------------------
 247
 248 bool wxTopLevelWindowX11::Show(bool show)
 249 {
 250     // Nano-X has to force a size event,
 251     // else there's no initial size.
 252 #if wxUSE_NANOX
 253     if (show)
 254 #else
 255     if (show && m_needResizeInIdle)
 256 #endif
 257     {
 258         wxSizeEvent event(GetSize(), GetId());
 259         event.SetEventObject(this);
 260         GetEventHandler()->ProcessEvent(event);
 261
 262         m_needResizeInIdle = FALSE;
 263     }
 264
 265     if (show)
 266     {
 267         // This does the layout _before_ the
 268         // window is shown, else the items are
 269         // drawn first at the wrong positions,
 270         // then at the correct positions.
 271         if (GetAutoLayout())
 272         {
 273             Layout();
 274         }
 275     }
 276
 277     return wxWindowX11::Show(show);
 278 }
 279
 280 // ----------------------------------------------------------------------------
 281 // wxTopLevelWindowX11 maximize/minimize
 282 // ----------------------------------------------------------------------------
 283
 284 void wxTopLevelWindowX11::Maximize(bool maximize)
 285 {
 286     // TODO
 287 }
 288
 289 bool wxTopLevelWindowX11::IsMaximized() const
 290 {
 291     // TODO
 292     return TRUE;
 293 }
 294
 295 void wxTopLevelWindowX11::Iconize(bool iconize)
 296 {
 297     if (!m_iconized && GetMainWindow())
 298     {
 299         if (XIconifyWindow(wxGlobalDisplay(),
 300             (Window) GetMainWindow(), DefaultScreen(wxGlobalDisplay())) != 0)
 301             m_iconized = TRUE;
 302     }
 303 }
 304
 305 bool wxTopLevelWindowX11::IsIconized() const
 306 {
 307     return m_iconized;
 308 }
 309
 310 void wxTopLevelWindowX11::Restore()
 311 {
 312     // This is the way to deiconify the window, according to the X FAQ
 313     if (m_iconized && GetMainWindow())
 314     {
 315         XMapWindow(wxGlobalDisplay(), (Window) GetMainWindow());
 316         m_iconized = FALSE;
 317     }
 318 }
 319
 320 // ----------------------------------------------------------------------------
 321 // wxTopLevelWindowX11 fullscreen
 322 // ----------------------------------------------------------------------------
 323
 324 bool wxTopLevelWindowX11::ShowFullScreen(bool show, long style)
 325 {
 326     if (show)
 327     {
 328         if (IsFullScreen())
 329             return FALSE;
 330
 331         m_fsIsShowing = TRUE;
 332         m_fsStyle = style;
 333
 334         // TODO
 335
 336         return TRUE;
 337     }
 338     else
 339     {
 340         if (!IsFullScreen())
 341             return FALSE;
 342
 343         m_fsIsShowing = FALSE;
 344
 345         // TODO
 346         return TRUE;
 347     }
 348 }
 349
 350 // ----------------------------------------------------------------------------
 351 // wxTopLevelWindowX11 misc
 352 // ----------------------------------------------------------------------------
 353
 354 void wxTopLevelWindowX11::SetIcon(const wxIcon& icon)
 355 {
 356     // this sets m_icon
 357     wxTopLevelWindowBase::SetIcon(icon);
 358
 359     if (icon.Ok() && GetMainWindow())
 360     {
 361 #if wxUSE_NANOX
 362 #else
 363         XWMHints *wmHints = XAllocWMHints();
 364         wmHints->icon_pixmap = (Pixmap) icon.GetPixmap();
 365
 366         wmHints->flags = IconPixmapHint;
 367
 368         if (icon.GetMask())
 369         {
 370             wmHints->flags |= IconMaskHint;
 371             wmHints->icon_mask = (Pixmap) icon.GetMask()->GetBitmap();
 372         }
 373
 374         XSetWMHints(wxGlobalDisplay(), (Window) GetMainWindow(), wmHints);
 375         XFree(wmHints);
 376 #endif
 377     }
 378 }
 379
 380 void wxTopLevelWindowX11::SetTitle(const wxString& title)
 381 {
 382     m_title = title;
 383     if (GetMainWindow())
 384     {
 385         XStoreName(wxGlobalDisplay(), (Window) GetMainWindow(),
 386             (const char*) title);
 387         XSetIconName(wxGlobalDisplay(), (Window) GetMainWindow(),
 388             (const char*) title);
 389
 390         // Use this if the platform doesn't supply the above functions.
 391 #if 0
 392         XTextProperty textProperty;
 393         textProperty.value = (unsigned char*) title;
 394         textProperty.encoding = XA_STRING;
 395         textProperty.format = 8;
 396         textProperty.nitems = 1;
 397
 398         XSetTextProperty(wxGlobalDisplay(), (Window) GetMainWindow(),
 399             & textProperty, WM_NAME);
 400 #endif
 401     }
 402 }
 403
 404 wxString wxTopLevelWindowX11::GetTitle() const
 405 {
 406     return m_title;
 407 }
 408
 409 #ifndef MWM_DECOR_BORDER
 410 /* bit definitions for MwmHints.flags */
 411 #define MWM_HINTS_FUNCTIONS (1L << 0)
 412 #define MWM_HINTS_DECORATIONS (1L << 1)
 413 #define MWM_HINTS_INPUT_MODE (1L << 2)
 414 #define MWM_HINTS_STATUS (1L << 3)
 415
 416 #define MWM_DECOR_ALL           (1L << 0)
 417 #define MWM_DECOR_BORDER        (1L << 1)
 418 #define MWM_DECOR_RESIZEH       (1L << 2)
 419 #define MWM_DECOR_TITLE         (1L << 3)
 420 #define MWM_DECOR_MENU          (1L << 4)
 421 #define MWM_DECOR_MINIMIZE      (1L << 5)
 422 #define MWM_DECOR_MAXIMIZE      (1L << 6)
 423 #endif
 424
 425 struct MwmHints {
 426     long flags;
 427     long functions;
 428     long decorations;
 429     long input_mode;
 430 };
 431
 432 #define PROP_MOTIF_WM_HINTS_ELEMENTS 5
 433
 434 // Set the window manager decorations according to the
 435 // given wxWindows style
 436 bool wxSetWMDecorations(Window w, long style)
 437 {
 438 #if wxUSE_NANOX
 439     GR_WM_PROPERTIES wmProp;
 440
 441     wmProp.flags = 0;
 442     wmProp.props = 0;
 443
 444     if (style & wxRESIZE_BORDER)
 445     {
 446         wmProp.props |= GR_WM_PROPS_APPFRAME ;
 447         wmProp.flags |= GR_WM_FLAGS_PROPS ;
 448     }
 449
 450     if (style & wxSYSTEM_MENU)
 451     {
 452         wmProp.props |= GR_WM_PROPS_CLOSEBOX ;
 453         wmProp.flags |= GR_WM_FLAGS_PROPS ;
 454     }
 455
 456     if ((style & wxCAPTION) ||
 457         (style & wxTINY_CAPTION_HORIZ) ||
 458         (style & wxTINY_CAPTION_VERT))
 459     {
 460         wmProp.props |= GR_WM_PROPS_CAPTION ;
 461         wmProp.flags |= GR_WM_FLAGS_PROPS ;
 462
 463         // The default dialog style doesn't include any kind
 464         // of border, which is a bit odd. Anyway, inclusion
 465         // of a caption surely implies a border.
 466         style |= wxTHICK_FRAME;
 467     }
 468
 469     if (style & wxTHICK_FRAME)
 470     {
 471         wmProp.props |= GR_WM_PROPS_APPFRAME ;
 472         wmProp.flags |= GR_WM_FLAGS_PROPS ;
 473     }
 474
 475     if (style & wxSIMPLE_BORDER)
 476     {
 477         wmProp.props |= GR_WM_PROPS_BORDER ;
 478         wmProp.flags |= GR_WM_FLAGS_PROPS ;
 479     }
 480
 481     if (style & wxMINIMIZE_BOX)
 482     {
 483     }
 484
 485     if (style & wxMAXIMIZE_BOX)
 486     {
 487         wmProp.props |= GR_WM_PROPS_MAXIMIZE ;
 488         wmProp.flags |= GR_WM_FLAGS_PROPS ;
 489     }
 490
 491     if (((style & wxBORDER) != wxBORDER) && ((style & wxTHICK_FRAME) != wxTHICK_FRAME)
 492         && ((style & wxRESIZE_BORDER) != wxRESIZE_BORDER))
 493     {
 494         wmProp.props |= GR_WM_PROPS_NODECORATE ;
 495         wmProp.flags |= GR_WM_FLAGS_PROPS ;
 496     }
 497
 498     GrSetWMProperties(w, & wmProp);
 499
 500 #else
 501     if (!wxMWMIsRunning(w))
 502         return FALSE;
 503
 504     Atom mwm_wm_hints = XInternAtom(wxGlobalDisplay(),"_MOTIF_WM_HINTS", False);
 505     MwmHints hints;
 506     hints.flags = 0;
 507     hints.decorations = 0;
 508
 509     if (style & wxRESIZE_BORDER)
 510     {
 511         // wxLogDebug("MWM_DECOR_RESIZEH");
 512         hints.flags |= MWM_HINTS_DECORATIONS;
 513         hints.decorations |= MWM_DECOR_RESIZEH;
 514     }
 515
 516     if (style & wxSYSTEM_MENU)
 517     {
 518         // wxLogDebug("MWM_DECOR_MENU");
 519         hints.flags |= MWM_HINTS_DECORATIONS;
 520         hints.decorations |= MWM_DECOR_MENU;
 521     }
 522
 523     if ((style & wxCAPTION) ||
 524         (style & wxTINY_CAPTION_HORIZ) ||
 525         (style & wxTINY_CAPTION_VERT))
 526     {
 527         // wxLogDebug("MWM_DECOR_TITLE");
 528         hints.flags |= MWM_HINTS_DECORATIONS;
 529         hints.decorations |= MWM_DECOR_TITLE;
 530     }
 531
 532     if ((style & wxTHICK_FRAME) || (style & wxCAPTION))
 533     {
 534         // wxLogDebug("MWM_DECOR_BORDER");
 535         hints.flags |= MWM_HINTS_DECORATIONS;
 536         hints.decorations |= MWM_DECOR_BORDER;
 537     }
 538
 539     if (style & wxMINIMIZE_BOX)
 540     {
 541         // wxLogDebug("MWM_DECOR_MINIMIZE");
 542         hints.flags |= MWM_HINTS_DECORATIONS;
 543         hints.decorations |= MWM_DECOR_MINIMIZE;
 544     }
 545
 546     if (style & wxMAXIMIZE_BOX)
 547     {
 548         // wxLogDebug("MWM_DECOR_MAXIMIZE");
 549         hints.flags |= MWM_HINTS_DECORATIONS;
 550         hints.decorations |= MWM_DECOR_MAXIMIZE;
 551     }
 552
 553     XChangeProperty(wxGlobalDisplay(),
 554                     w,
 555                     mwm_wm_hints, mwm_wm_hints,
 556                     32, PropModeReplace,
 557                     (unsigned char *) &hints, PROP_MOTIF_WM_HINTS_ELEMENTS);
 558
 559 #endif
 560     return TRUE;
 561 }
 562
 563 bool wxMWMIsRunning(Window w)
 564 {
 565 #if wxUSE_NANOX
 566     return FALSE;
 567 #else
 568     Display *dpy = (Display*)wxGetDisplay();
 569     Atom motifWmInfo = XInternAtom(dpy, "_MOTIF_WM_INFO", False);
 570
 571     unsigned long length, bytesafter;
 572     unsigned char value[20];
 573     unsigned char *ptr = &value[0];
 574     int ret, format;
 575     Atom type;
 576
 577     type = format = length = 0;
 578     value[0] = 0;
 579
 580     ret = XGetWindowProperty(wxGlobalDisplay(), w, motifWmInfo,
 581             0L, 2, False, motifWmInfo,
 582             &type, &format, &length, &bytesafter, &ptr);
 583
 584     return (ret == Success);
 585 #endif
 586 }
 587
 588 // For implementation purposes - sometimes decorations make the client area
 589 // smaller
 590 wxPoint wxTopLevelWindowX11::GetClientAreaOrigin() const
 591 {
 592     // wxFrame::GetClientAreaOrigin
 593     // does the required calculation already.
 594     return wxPoint(0, 0);
 595 }
 596
 597 void wxTopLevelWindowX11::DoGetClientSize( int *width, int *height ) const
 598 {
 599     XSync(wxGlobalDisplay(), False);
 600     wxWindowX11::DoGetClientSize(width, height);
 601 }
 602
 603 void wxTopLevelWindowX11::DoSetClientSize(int width, int height)
 604 {
 605     wxWindowX11::DoSetClientSize(width, height);
 606
 607 #if !wxUSE_NANOX
 608     // Set the top-level window size
 609     XSizeHints size_hints;
 610     wxSize oldSize = GetSize();
 611     wxSize oldClientSize = GetClientSize();
 612
 613     size_hints.flags = PSize;
 614     size_hints.width = width + (oldSize.x - oldClientSize.x);
 615     size_hints.height = height + (oldSize.y - oldClientSize.y);
 616     XSetWMNormalHints( (Display*) GetXDisplay(), (Window) GetMainWindow(),
 617                        &size_hints);
 618
 619     // This seems to be necessary or resizes don't get performed
 620     XSync(wxGlobalDisplay(), False);
 621     XSync(wxGlobalDisplay(), False);
 622
 623 #if 0
 624     wxLogDebug("DoSetClientSize: Tried to set size to %d, %d", (int) size_hints.width, (int) size_hints.height);
 625
 626     XSync(wxGlobalDisplay(), False);
 627     wxSize newSize = GetSize();
 628     wxLogDebug("New size is %d, %d", (int) newSize.x, (int) newSize.y);
 629 #endif
 630 #endif
 631 }
 632
 633 void wxTopLevelWindowX11::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 634 {
 635 #if 0
 636     // wxLogDebug( "Setting pos: %d, %d", x, y );
 637     wxWindowX11::DoSetSize(x, y, width, height, sizeFlags);
 638 #endif
 639     XSync(wxGlobalDisplay(), False);
 640     Window window = (Window) m_mainWidget;
 641     if (!window)
 642         return ;
 643
 644     Display *display = (Display*) GetXDisplay();
 645     Window root = RootWindowOfScreen(DefaultScreenOfDisplay(display));
 646     Window parent_window = window,
 647         next_parent   = window;
 648
 649     // search for the parent that is child of ROOT, because the WM may
 650     // reparent twice and notify only the next parent (like FVWM)
 651     while (next_parent != root) {
 652         Window *theChildren;
 653 #if wxUSE_NANOX
 654         GR_COUNT n;
 655 #else
 656         unsigned int n;
 657 #endif
 658         parent_window = next_parent;
 659         XQueryTree(display, parent_window, &root,
 660             &next_parent, &theChildren, &n);
 661         XFree(theChildren); // not needed
 662     }
 663
 664     XWindowChanges windowChanges;
 665     windowChanges.x = x;
 666     windowChanges.y = y;
 667     windowChanges.width = width;
 668     windowChanges.height = height;
 669     windowChanges.stack_mode = 0;
 670     int valueMask = CWX | CWY | CWWidth | CWHeight;
 671
 672     if (x != -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 673     {
 674         valueMask |= CWX;
 675     }
 676     if (y != -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 677     {
 678         valueMask |= CWY;
 679     }
 680     if (width != -1)
 681     {
 682         windowChanges.width = wxMax(1, width);
 683         valueMask |= CWWidth;
 684     }
 685     if (height != -1)
 686     {
 687         windowChanges.height = wxMax(1, height);
 688         valueMask |= CWHeight;
 689     }
 690
 691     XConfigureWindow( display, parent_window, valueMask, &windowChanges );
 692
 693 #if !wxUSE_NANOX
 694     XSizeHints size_hints;
 695     size_hints.flags = 0;
 696     if (x > -1 && y > -1)
 697         size_hints.flags |= PPosition;
 698     if (width > -1 && height > -1)
 699         size_hints.flags |= PSize;
 700     size_hints.width = width;
 701     size_hints.height = height;
 702     size_hints.x = x;
 703     size_hints.y = y;
 704     XSetWMNormalHints( (Display*) GetXDisplay(), (Window) GetMainWindow(),
 705                        &size_hints);
 706
 707     // This seems to be necessary or resizes don't get performed.
 708     // Take them out (or even just one of them), and the About
 709     // box of the minimal sample probably won't be resized right.
 710     XSync(wxGlobalDisplay(), False);
 711     XSync(wxGlobalDisplay(), False);
 712 #endif
 713 }
 714
 715 void wxTopLevelWindowX11::DoGetPosition(int *x, int *y) const
 716 {
 717     XSync(wxGlobalDisplay(), False);
 718     Window window = (Window) m_mainWidget;
 719     if (!window)
 720         return ;
 721
 722     Display *display = (Display*) GetXDisplay();
 723     Window root = RootWindowOfScreen(DefaultScreenOfDisplay(display));
 724     Window parent_window = window,
 725         next_parent   = window;
 726
 727     // search for the parent that is child of ROOT, because the WM may
 728     // reparent twice and notify only the next parent (like FVWM)
 729     while (next_parent != root) {
 730         Window *theChildren;
 731 #if wxUSE_NANOX
 732         GR_COUNT n;
 733 #else
 734         unsigned int n;
 735 #endif
 736         parent_window = next_parent;
 737         XQueryTree(display, parent_window, &root,
 738             &next_parent, &theChildren, &n);
 739         XFree(theChildren); // not needed
 740     }
 741 #if 0
 742     int xx, yy; unsigned int dummy;
 743     XGetGeometry(display, parent_window, &root,
 744                  &xx, &yy, &dummy, &dummy, &dummy, &dummy);
 745     if (x) *x = xx;
 746     if (y) *y = yy;
 747 #else
 748     XWindowAttributes attr;
 749     Status status = XGetWindowAttributes((Display*) GetXDisplay(), parent_window, & attr);
 750     if (status)
 751     {
 752         if (x) *x = attr.x;
 753         if (y) *y = attr.y;
 754     }
 755     else
 756     {
 757         if (x) *x = 0;
 758         if (y) *y = 0;
 759     }
 760 #endif
 761 }