]> git.saurik.com Git - wxWidgets.git/blobdiff - src/x11/toplevel.cpp
minor fix to wxDC::SetClippingRegion
[wxWidgets.git] / src / x11 / toplevel.cpp
index ca2cbd481e360eb86746ef5526618c65a7f07357..b26cd7994746f6d22bc7eb93b3f5f553db473173 100644 (file)
     #include "wx/log.h"
     #include "wx/intl.h"
     #include "wx/frame.h"
+    #include "wx/menu.h"
+    #include "wx/statusbr.h"
 #endif //WX_PRECOMP
 
+#include "wx/settings.h"
 #include "wx/x11/private.h"
+#include "X11/Xutil.h"
 
-// ----------------------------------------------------------------------------
-// globals
-// ----------------------------------------------------------------------------
-
-// list of all frames and modeless dialogs
-// wxWindowList wxModelessWindows;
+bool wxMWMIsRunning(Window w);
 
 // ----------------------------------------------------------------------------
 // wxTopLevelWindowX11 creation
@@ -62,22 +61,8 @@ void wxTopLevelWindowX11::Init()
     m_fsStyle = 0;
     m_fsIsMaximized = FALSE;
     m_fsIsShowing = FALSE;
-}
-
-bool wxTopLevelWindowX11::CreateDialog(const wxString& title,
-                                       const wxPoint& pos,
-                                       const wxSize& size)
-{
-    // TODO
-    return FALSE;
-}
-
-bool wxTopLevelWindowX11::CreateFrame(const wxString& title,
-                                      const wxPoint& pos,
-                                      const wxSize& size)
-{
-    // TODO
-    return FALSE;
+    
+    m_needResizeInIdle = FALSE;
 }
 
 bool wxTopLevelWindowX11::Create(wxWindow *parent,
@@ -92,33 +77,162 @@ bool wxTopLevelWindowX11::Create(wxWindow *parent,
     Init();
 
     m_windowStyle = style;
+    m_parent = parent;
 
     SetName(name);
 
     m_windowId = id == -1 ? NewControlId() : id;
 
+    if (parent)
+        parent->AddChild(this);
+
     wxTopLevelWindows.Append(this);
+    
+    Display *xdisplay = wxGlobalDisplay();
+    int xscreen = DefaultScreen( xdisplay );
+    Visual *xvisual = DefaultVisual( xdisplay, xscreen );
+    Window xparent = RootWindow( xdisplay, xscreen );
+    Colormap cm = DefaultColormap( xdisplay, xscreen );
+    
+    if (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)
+        m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
+    else
+        m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE);
+    m_backgroundColour.CalcPixel( (WXColormap) cm );
+    m_hasBgCol = TRUE;
+       
+    wxSize size2(size);
+    if (size2.x == -1)
+       size2.x = 100;
+    if (size2.y == -1)
+       size2.y = 100;
+
+    wxPoint pos2(pos);
+    if (pos2.x == -1)
+       pos2.x = 100;
+    if (pos2.y == -1)
+       pos2.y = 100;
+    
+#if !wxUSE_NANOX
+    XSetWindowAttributes xattributes;
+    XSizeHints size_hints;
+    
+    long xattributes_mask =
+        CWBorderPixel | CWBackPixel;
+
+    xattributes.background_pixel = m_backgroundColour.GetPixel();
+    xattributes.border_pixel = BlackPixel( xdisplay, xscreen );
+
+    if (HasFlag( wxNO_FULL_REPAINT_ON_RESIZE ))
+    {
+        xattributes_mask |= CWBitGravity;
+        xattributes.bit_gravity = StaticGravity;
+    }
 
-    if ( parent )
-        parent->AddChild(this);
+    xattributes_mask |= CWEventMask;
+    xattributes.event_mask = 
+        ExposureMask | KeyPressMask | KeyReleaseMask | ButtonPressMask | ButtonReleaseMask |
+        ButtonMotionMask | EnterWindowMask | LeaveWindowMask | PointerMotionMask |
+        KeymapStateMask | FocusChangeMask | ColormapChangeMask | StructureNotifyMask |
+        PropertyChangeMask;
+        
+    Window xwindow = XCreateWindow( xdisplay, xparent, pos2.x, pos2.y, size2.x, size2.y, 
+                                    0, DefaultDepth(xdisplay,xscreen), InputOutput, xvisual, xattributes_mask, &xattributes );
+#else
+    long backColor, foreColor;
+    backColor = GR_RGB(m_backgroundColour.Red(), m_backgroundColour.Green(), m_backgroundColour.Blue());
+    foreColor = GR_RGB(m_foregroundColour.Red(), m_foregroundColour.Green(), m_foregroundColour.Blue());
+    
+    Window xwindow = XCreateWindowWithColor( xdisplay, xparent, pos2.x, pos2.y, size2.x, size2.y, 
+                                    0, 0, InputOutput, xvisual, backColor, foreColor);
+#endif
+
+    m_mainWidget = (WXWindow) xwindow;
+
+#if wxUSE_NANOX
+    XSelectInput( xdisplay, xwindow,
+                  GR_EVENT_MASK_CLOSE_REQ |
+                  ExposureMask |
+                  KeyPressMask |
+                  KeyReleaseMask |
+                  ButtonPressMask |
+                  ButtonReleaseMask |
+                  ButtonMotionMask |
+                  EnterWindowMask |
+                  LeaveWindowMask |
+                  PointerMotionMask |
+                  KeymapStateMask |
+                  FocusChangeMask |
+                  ColormapChangeMask |
+                  StructureNotifyMask |
+                  PropertyChangeMask
+                  );
+#endif
+    
+    wxAddWindowToTable( xwindow, (wxWindow*) this );
 
-    if ( GetExtraStyle() & wxTOPLEVEL_EX_DIALOG )
+    // Set background to None which will prevent X11 from clearing the
+    // background completely.
+    XSetWindowBackgroundPixmap( xdisplay, xwindow, None );
+
+#if !wxUSE_NANOX
+    if (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)
     {
-        return CreateDialog(title, pos, size);
+        if (GetParent() && GetParent()->GetMainWindow())
+        {
+             Window xparentwindow = (Window) GetParent()->GetMainWindow();
+             XSetTransientForHint( xdisplay, xwindow, xparentwindow );
+        }
     }
-    else // !dialog
+
+    size_hints.flags = PSize | PPosition;
+    size_hints.x = pos2.x;
+    size_hints.y = pos2.y;
+    size_hints.width = size2.x;
+    size_hints.height = size2.y;
+    XSetWMNormalHints( xdisplay, xwindow, &size_hints);
+    
+    XWMHints wm_hints;
+    wm_hints.flags = InputHint | StateHint /* | WindowGroupHint */;
+    wm_hints.input = True;
+    wm_hints.initial_state = NormalState;
+    XSetWMHints( xdisplay, xwindow, &wm_hints);
+
+    Atom wm_protocols[2];
+    wm_protocols[0] = XInternAtom( xdisplay, "WM_DELETE_WINDOW", False );
+    wm_protocols[1] = XInternAtom( xdisplay, "WM_TAKE_FOCUS", False );
+    XSetWMProtocols( xdisplay, xwindow, wm_protocols, 2);
+
+#if 0 // TODO
+    // You will need a compliant window manager for this to work
+    // (e.g. sawfish/enlightenment/kde/icewm/windowmaker)
+    if (style & wxSTAY_ON_TOP)
     {
-        return CreateFrame(title, pos, size);
+        CARD32 data = 4; // or should this be 6? According to http://developer.gnome.org/doc/standards/wm/c44.html
+        XChangeProperty (xdisplay,
+                    xwindow,
+                    XInternAtom (xdisplay, "_WIN_LAYER", False),
+                    XA_CARDINAL,
+                    32,
+                    PropModeReplace,
+                    (unsigned char *)&data,
+                    1);
     }
+#endif
+
+#endif
+    
+    wxSetWMDecorations( xwindow, style);
+
+    SetTitle(title);
+    
+    return TRUE;
 }
 
 wxTopLevelWindowX11::~wxTopLevelWindowX11()
 {
     wxTopLevelWindows.DeleteObject(this);
 
-    if ( wxModelessWindows.Find(this) )
-        wxModelessWindows.DeleteObject(this);
-
     // If this is the last top-level window, exit.
     if ( wxTheApp && (wxTopLevelWindows.Number() == 0) )
     {
@@ -132,18 +246,54 @@ wxTopLevelWindowX11::~wxTopLevelWindowX11()
     }
 }
 
+void wxTopLevelWindowX11::OnInternalIdle()
+{
+    wxWindow::OnInternalIdle();
+    
+    if (m_needResizeInIdle)
+    {
+        wxSizeEvent event( GetClientSize(), GetId() );
+        event.SetEventObject( this );
+        GetEventHandler()->ProcessEvent( event );
+        
+        m_needResizeInIdle = FALSE;
+    }
+}
+
 // ----------------------------------------------------------------------------
 // wxTopLevelWindowX11 showing
 // ----------------------------------------------------------------------------
 
 bool wxTopLevelWindowX11::Show(bool show)
 {
-    if ( !wxWindowBase::Show(show) )
-        return FALSE;
+    // Nano-X has to force a size event,
+    // else there's no initial size.
+#if wxUSE_NANOX
+    if (show)
+#else
+    if (show && m_needResizeInIdle)
+#endif
+    {
+        wxSizeEvent event(GetSize(), GetId());
+        event.SetEventObject(this);
+        GetEventHandler()->ProcessEvent(event);
+        
+        m_needResizeInIdle = FALSE;
+    }
 
-    // TODO
+    if (show)
+    {
+        // This does the layout _before_ the
+        // window is shown, else the items are
+        // drawn first at the wrong positions,
+        // then at the correct positions.
+        if (GetAutoLayout())
+        {
+            Layout();
+        }
+    }
 
-    return TRUE;
+    return wxWindowX11::Show(show);
 }
 
 // ----------------------------------------------------------------------------
@@ -163,18 +313,27 @@ bool wxTopLevelWindowX11::IsMaximized() const
 
 void wxTopLevelWindowX11::Iconize(bool iconize)
 {
-    // TODO
+    if (!m_iconized && GetMainWindow())
+    {
+        if (XIconifyWindow(wxGlobalDisplay(),
+            (Window) GetMainWindow(), DefaultScreen(wxGlobalDisplay())) != 0)
+            m_iconized = TRUE;
+    }
 }
 
 bool wxTopLevelWindowX11::IsIconized() const
 {
-    // TODO
     return m_iconized;
 }
 
 void wxTopLevelWindowX11::Restore()
 {
-    // TODO
+    // This is the way to deiconify the window, according to the X FAQ
+    if (m_iconized && GetMainWindow())
+    {
+        XMapWindow(wxGlobalDisplay(), (Window) GetMainWindow());
+        m_iconized = FALSE;
+    }
 }
 
 // ----------------------------------------------------------------------------
@@ -216,5 +375,392 @@ void wxTopLevelWindowX11::SetIcon(const wxIcon& icon)
     // this sets m_icon
     wxTopLevelWindowBase::SetIcon(icon);
 
-    // TODO
+    if (icon.Ok() && GetMainWindow())
+    {
+#if wxUSE_NANOX
+#else
+        XWMHints *wmHints = XAllocWMHints();
+        wmHints->icon_pixmap = (Pixmap) icon.GetPixmap();
+
+        wmHints->flags = IconPixmapHint;
+
+        if (icon.GetMask())
+        {
+            wmHints->flags |= IconMaskHint;
+            wmHints->icon_mask = (Pixmap) icon.GetMask()->GetBitmap();
+        }
+
+        XSetWMHints(wxGlobalDisplay(), (Window) GetMainWindow(), wmHints);
+        XFree(wmHints);
+#endif
+    }
+}
+
+void wxTopLevelWindowX11::SetTitle(const wxString& title)
+{
+    m_title = title;
+    if (GetMainWindow())
+    {
+        XStoreName(wxGlobalDisplay(), (Window) GetMainWindow(),
+            (const char*) title);
+        XSetIconName(wxGlobalDisplay(), (Window) GetMainWindow(),
+            (const char*) title);
+
+        // Use this if the platform doesn't supply the above functions.
+#if 0
+        XTextProperty textProperty;
+        textProperty.value = (unsigned char*) title;
+        textProperty.encoding = XA_STRING;
+        textProperty.format = 8;
+        textProperty.nitems = 1;
+
+        XSetTextProperty(wxGlobalDisplay(), (Window) GetMainWindow(),
+            & textProperty, WM_NAME);
+#endif
+    }
+}
+
+wxString wxTopLevelWindowX11::GetTitle() const
+{
+    return m_title;
+}
+
+#ifndef MWM_DECOR_BORDER
+
+#define MWM_HINTS_FUNCTIONS     (1L << 0)
+#define MWM_HINTS_DECORATIONS   (1L << 1)
+#define MWM_HINTS_INPUT_MODE    (1L << 2)
+#define MWM_HINTS_STATUS        (1L << 3)
+
+#define MWM_DECOR_ALL           (1L << 0)
+#define MWM_DECOR_BORDER        (1L << 1)
+#define MWM_DECOR_RESIZEH       (1L << 2)
+#define MWM_DECOR_TITLE         (1L << 3)
+#define MWM_DECOR_MENU          (1L << 4)
+#define MWM_DECOR_MINIMIZE      (1L << 5)
+#define MWM_DECOR_MAXIMIZE      (1L << 6)
+
+#define MWM_FUNC_ALL            (1L << 0)
+#define MWM_FUNC_RESIZE         (1L << 1)
+#define MWM_FUNC_MOVE           (1L << 2)
+#define MWM_FUNC_MINIMIZE       (1L << 3)
+#define MWM_FUNC_MAXIMIZE       (1L << 4)
+#define MWM_FUNC_CLOSE          (1L << 5)
+
+#define MWM_INPUT_MODELESS 0
+#define MWM_INPUT_PRIMARY_APPLICATION_MODAL 1
+#define MWM_INPUT_SYSTEM_MODAL 2
+#define MWM_INPUT_FULL_APPLICATION_MODAL 3
+#define MWM_INPUT_APPLICATION_MODAL MWM_INPUT_PRIMARY_APPLICATION_MODAL
+
+#define MWM_TEAROFF_WINDOW     (1L<<0)
+
+#endif
+
+struct MwmHints {
+    long flags;
+    long functions;
+    long decorations;
+    long input_mode;
+};
+
+#define PROP_MOTIF_WM_HINTS_ELEMENTS 5
+
+// Set the window manager decorations according to the
+// given wxWindows style
+bool wxSetWMDecorations(Window w, long style)
+{
+#if wxUSE_NANOX
+    GR_WM_PROPERTIES wmProp;
+
+    wmProp.flags = 0;
+    wmProp.props = 0;
+
+    if (style & wxRESIZE_BORDER)
+    {
+        wmProp.props |= GR_WM_PROPS_APPFRAME ;
+        wmProp.flags |= GR_WM_FLAGS_PROPS ;
+    }
+
+    if (style & wxSYSTEM_MENU)
+    {
+        wmProp.props |= GR_WM_PROPS_CLOSEBOX ;
+        wmProp.flags |= GR_WM_FLAGS_PROPS ;
+    }
+
+    if ((style & wxCAPTION) ||
+        (style & wxTINY_CAPTION_HORIZ) ||
+        (style & wxTINY_CAPTION_VERT))
+    {
+        wmProp.props |= GR_WM_PROPS_CAPTION ;
+        wmProp.flags |= GR_WM_FLAGS_PROPS ;
+
+        // The default dialog style doesn't include any kind
+        // of border, which is a bit odd. Anyway, inclusion
+        // of a caption surely implies a border.
+        style |= wxTHICK_FRAME;
+    }
+
+    if (style & wxTHICK_FRAME)
+    {
+        wmProp.props |= GR_WM_PROPS_APPFRAME ;
+        wmProp.flags |= GR_WM_FLAGS_PROPS ;
+    }
+
+    if (style & wxSIMPLE_BORDER)
+    {
+        wmProp.props |= GR_WM_PROPS_BORDER ;
+        wmProp.flags |= GR_WM_FLAGS_PROPS ;
+    }
+
+    if (style & wxMINIMIZE_BOX)
+    {
+    }
+
+    if (style & wxMAXIMIZE_BOX)
+    {
+        wmProp.props |= GR_WM_PROPS_MAXIMIZE ;
+        wmProp.flags |= GR_WM_FLAGS_PROPS ;
+    }
+
+    if (((style & wxBORDER) != wxBORDER) && ((style & wxTHICK_FRAME) != wxTHICK_FRAME)
+        && ((style & wxRESIZE_BORDER) != wxRESIZE_BORDER))
+    {
+        wmProp.props |= GR_WM_PROPS_NODECORATE ;
+        wmProp.flags |= GR_WM_FLAGS_PROPS ;
+    }
+
+    GrSetWMProperties(w, & wmProp);
+    
+#else
+
+    Atom mwm_wm_hints = XInternAtom(wxGlobalDisplay(),"_MOTIF_WM_HINTS", False);
+    if (mwm_wm_hints == 0)
+       return FALSE;
+    
+    MwmHints hints;
+    hints.flags = MWM_HINTS_DECORATIONS | MWM_HINTS_FUNCTIONS;
+    hints.decorations = 0;
+    hints.functions = 0;
+    
+    if ((style & wxSIMPLE_BORDER) || (style & wxNO_BORDER))
+    {
+        // leave zeros
+    }
+    else
+    {
+        hints.decorations = MWM_DECOR_BORDER;
+        hints.functions = MWM_FUNC_MOVE;
+
+        if ((style & wxCAPTION) != 0)
+            hints.decorations |= MWM_DECOR_TITLE;
+            
+        if ((style & wxSYSTEM_MENU) != 0)
+        {
+            hints.functions |= MWM_FUNC_CLOSE;
+            hints.decorations |= MWM_DECOR_MENU;
+        }
+        
+        if ((style & wxMINIMIZE_BOX) != 0)
+        {
+            hints.functions |= MWM_FUNC_MINIMIZE;
+            hints.decorations |= MWM_DECOR_MINIMIZE;
+        }
+        
+        if ((style & wxMAXIMIZE_BOX) != 0)
+        {
+            hints.functions |= MWM_FUNC_MAXIMIZE;
+            hints.decorations |= MWM_DECOR_MAXIMIZE;
+        }
+        
+        if ((style & wxRESIZE_BORDER) != 0)
+        {
+            hints.functions |= MWM_FUNC_RESIZE;
+            hints.decorations |= MWM_DECOR_RESIZEH;
+        }
+    }
+
+    XChangeProperty(wxGlobalDisplay(),
+                   w,
+                   mwm_wm_hints, mwm_wm_hints,
+                   32, PropModeReplace,
+                   (unsigned char *) &hints, PROP_MOTIF_WM_HINTS_ELEMENTS);
+
+#endif
+    return TRUE;
+}
+
+// For implementation purposes - sometimes decorations make the client area
+// smaller
+wxPoint wxTopLevelWindowX11::GetClientAreaOrigin() const
+{
+    // wxFrame::GetClientAreaOrigin
+    // does the required calculation already.
+    return wxPoint(0, 0);
+}
+
+void wxTopLevelWindowX11::DoGetClientSize( int *width, int *height ) const
+{
+    XSync(wxGlobalDisplay(), False);
+    wxWindowX11::DoGetClientSize(width, height);
+}
+
+void wxTopLevelWindowX11::DoSetClientSize(int width, int height)
+{
+    wxWindowX11::DoSetClientSize(width, height);
+
+#if !wxUSE_NANOX
+    // Set the top-level window size
+    XSizeHints size_hints;
+    wxSize oldSize = GetSize();
+    wxSize oldClientSize = GetClientSize();
+
+    size_hints.flags = PSize;
+    size_hints.width = width + (oldSize.x - oldClientSize.x);
+    size_hints.height = height + (oldSize.y - oldClientSize.y);
+    XSetWMNormalHints( (Display*) GetXDisplay(), (Window) GetMainWindow(),
+                       &size_hints);
+
+    // This seems to be necessary or resizes don't get performed
+    XSync(wxGlobalDisplay(), False);
+    XSync(wxGlobalDisplay(), False);
+
+#if 0
+    wxLogDebug("DoSetClientSize: Tried to set size to %d, %d", (int) size_hints.width, (int) size_hints.height);
+
+    XSync(wxGlobalDisplay(), False);
+    wxSize newSize = GetSize();
+    wxLogDebug("New size is %d, %d", (int) newSize.x, (int) newSize.y);
+#endif
+#endif
+}
+
+void wxTopLevelWindowX11::DoSetSize(int x, int y, int width, int height, int sizeFlags)
+{
+#if 0
+    // wxLogDebug( "Setting pos: %d, %d", x, y );
+    wxWindowX11::DoSetSize(x, y, width, height, sizeFlags);
+#endif
+    XSync(wxGlobalDisplay(), False);
+    Window window = (Window) m_mainWidget;
+    if (!window)
+        return ;
+
+    Display *display = (Display*) GetXDisplay();
+    Window root = RootWindowOfScreen(DefaultScreenOfDisplay(display));
+    Window parent_window = window,
+        next_parent   = window;
+
+    // search for the parent that is child of ROOT, because the WM may
+    // reparent twice and notify only the next parent (like FVWM)
+    while (next_parent != root) {
+        Window *theChildren;
+#if wxUSE_NANOX
+        GR_COUNT n;
+#else
+        unsigned int n;
+#endif
+        parent_window = next_parent;
+        XQueryTree(display, parent_window, &root,
+            &next_parent, &theChildren, &n);
+        XFree(theChildren); // not needed
+    }
+
+    XWindowChanges windowChanges;
+    windowChanges.x = x;
+    windowChanges.y = y;
+    windowChanges.width = width;
+    windowChanges.height = height;
+    windowChanges.stack_mode = 0;
+    int valueMask = CWX | CWY | CWWidth | CWHeight;
+
+    if (x != -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
+    {
+        valueMask |= CWX;
+    }
+    if (y != -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
+    {
+        valueMask |= CWY;
+    }
+    if (width != -1)
+    {
+        windowChanges.width = wxMax(1, width);
+        valueMask |= CWWidth;
+    }
+    if (height != -1)
+    {
+        windowChanges.height = wxMax(1, height);
+        valueMask |= CWHeight;
+    }
+
+    XConfigureWindow( display, parent_window, valueMask, &windowChanges );
+
+#if !wxUSE_NANOX    
+    XSizeHints size_hints;
+    size_hints.flags = 0;
+    if (x > -1 && y > -1)
+        size_hints.flags |= PPosition;
+    if (width > -1 && height > -1)
+        size_hints.flags |= PSize;
+    size_hints.width = width;
+    size_hints.height = height;
+    size_hints.x = x;
+    size_hints.y = y;
+    XSetWMNormalHints( (Display*) GetXDisplay(), (Window) GetMainWindow(),
+                       &size_hints);
+
+    // This seems to be necessary or resizes don't get performed.
+    // Take them out (or even just one of them), and the About
+    // box of the minimal sample probably won't be resized right.
+    XSync(wxGlobalDisplay(), False);
+    XSync(wxGlobalDisplay(), False);
+#endif
+}
+
+void wxTopLevelWindowX11::DoGetPosition(int *x, int *y) const
+{
+    XSync(wxGlobalDisplay(), False);
+    Window window = (Window) m_mainWidget;
+    if (!window)
+        return ;
+
+    Display *display = (Display*) GetXDisplay();
+    Window root = RootWindowOfScreen(DefaultScreenOfDisplay(display));
+    Window parent_window = window,
+        next_parent   = window;
+
+    // search for the parent that is child of ROOT, because the WM may
+    // reparent twice and notify only the next parent (like FVWM)
+    while (next_parent != root) {
+        Window *theChildren;
+#if wxUSE_NANOX
+        GR_COUNT n;
+#else
+        unsigned int n;
+#endif
+        parent_window = next_parent;
+        XQueryTree(display, parent_window, &root,
+            &next_parent, &theChildren, &n);
+        XFree(theChildren); // not needed
+    }
+#if 0
+    int xx, yy; unsigned int dummy;
+    XGetGeometry(display, parent_window, &root,
+                 &xx, &yy, &dummy, &dummy, &dummy, &dummy);
+    if (x) *x = xx;
+    if (y) *y = yy;
+#else
+    XWindowAttributes attr;
+    Status status = XGetWindowAttributes((Display*) GetXDisplay(), parent_window, & attr);
+    if (status)
+    {
+        if (x) *x = attr.x;
+        if (y) *y = attr.y;
+    }
+    else
+    {
+        if (x) *x = 0;
+        if (y) *y = 0;
+    }
+#endif
 }