src/unix/displayx11.cpp

///////////////////////////////////////////////////////////////////////////
// Name:        src/unix/displayx11.cpp
// Purpose:     Unix/X11 implementation of wxDisplay class
// Author:      Brian Victor, Vadim Zeitlin
// Modified by:
// Created:     12/05/02
// RCS-ID:      $Id$
// Copyright:   (c) wxWidgets team
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

// ============================================================================
// declarations
// ============================================================================

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#if wxUSE_DISPLAY

#include "wx/display.h"

#ifndef WX_PRECOMP
    #include "wx/dynarray.h"
    #include "wx/gdicmn.h"
    #include "wx/string.h"
    #include "wx/utils.h"
    #include "wx/intl.h"
    #include "wx/log.h"
#endif /* WX_PRECOMP */

#include "wx/display_impl.h"

/* These must be included after the wx files.  Otherwise the Data macro in
 * Xlibint.h conflicts with a function declaration in wx/list.h.  */
extern "C"
{
    #include <X11/Xlib.h>
    #include <X11/Xlibint.h>

    #include <X11/extensions/Xinerama.h>
    #ifdef HAVE_X11_EXTENSIONS_XF86VMODE_H
        #include <X11/extensions/xf86vmode.h>
    #endif
}

// ----------------------------------------------------------------------------
// helper class to automatically free XineramaQueryScreens() return value
// ----------------------------------------------------------------------------

class ScreensInfo
{
public:
    ScreensInfo()
    {
        m_screens = XineramaQueryScreens((Display *)wxGetDisplay(), &m_num);
    }

    ~ScreensInfo()
    {
        XFree(m_screens);
    }

    operator const XineramaScreenInfo *() const { return m_screens; }

    unsigned GetCount() const { return wx_static_cast(unsigned, m_num); }

private:
    XineramaScreenInfo *m_screens;
    int m_num;
};

// ----------------------------------------------------------------------------
// display and display factory classes
// ----------------------------------------------------------------------------

class WXDLLEXPORT wxDisplayImplX11 : public wxDisplayImpl
{
public:
    wxDisplayImplX11(unsigned n, const XineramaScreenInfo& info)
        : wxDisplayImpl(n),
          m_rect(info.x_org, info.y_org, info.width, info.height)
    {
    }

    virtual wxRect GetGeometry() const { return m_rect; }
    virtual wxRect GetClientArea() const
    {
        // we intentionally don't cache the result here because the client
        // display area may change (e.g. the user resized or hid a panel) and
        // we don't currently react to its changes
        return IsPrimary() ? wxGetClientDisplayRect() : m_rect;
    }

    virtual wxString GetName() const { return wxString(); }

    virtual wxArrayVideoModes GetModes(const wxVideoMode& mode) const;
    virtual wxVideoMode GetCurrentMode() const;
    virtual bool ChangeMode(const wxVideoMode& mode);

private:
    wxRect m_rect;
    int m_depth;

    DECLARE_NO_COPY_CLASS(wxDisplayImplX11)
};

class wxDisplayFactoryX11 : public wxDisplayFactory
{
public:
    wxDisplayFactoryX11() { }

    virtual wxDisplayImpl *CreateDisplay(unsigned n);
    virtual unsigned GetCount();
    virtual int GetFromPoint(const wxPoint& pt);

protected:
    DECLARE_NO_COPY_CLASS(wxDisplayFactoryX11)
};

// ============================================================================
// wxDisplayFactoryX11 implementation
// ============================================================================

unsigned wxDisplayFactoryX11::GetCount()
{
    return ScreensInfo().GetCount();
}

int wxDisplayFactoryX11::GetFromPoint(const wxPoint& p)
{
    ScreensInfo screens;

    const unsigned numscreens(screens.GetCount());
    for ( unsigned i = 0; i < numscreens; ++i )
    {
        const XineramaScreenInfo& s = screens[i];
        if ( p.x >= s.x_org && p.x < s.x_org + s.width &&
                p.y >= s.y_org && p.y < s.y_org + s.height )
        {
            return i;
        }
    }

    return wxNOT_FOUND;
}

wxDisplayImpl *wxDisplayFactoryX11::CreateDisplay(unsigned n)
{
    ScreensInfo screens;

    return n < screens.GetCount() ? new wxDisplayImplX11(n, screens[n]) : NULL;
}

// ============================================================================
// wxDisplayImplX11 implementation
// ============================================================================

#ifdef HAVE_X11_EXTENSIONS_XF86VMODE_H

//
//  See (http://www.xfree86.org/4.2.0/XF86VidModeDeleteModeLine.3.html) for more
//  info about xf86 video mode extensions
//

//free private data common to x (usually s3) servers
#define wxClearXVM(vm)  if(vm.privsize) XFree(vm.c_private)

// Correct res rate from GLFW
#define wxCRR2(v,dc) (int) (((1000.0f * (float) dc) /*PIXELS PER SECOND */) / ((float) v.htotal * v.vtotal /*PIXELS PER FRAME*/) + 0.5f)
#define wxCRR(v) wxCRR2(v,v.dotclock)
#define wxCVM2(v, dc) wxVideoMode(v.hdisplay, v.vdisplay, DefaultDepth((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay())), wxCRR2(v,dc))
#define wxCVM(v) wxCVM2(v, v.dotclock)

wxArrayVideoModes wxDisplayImplX11::GetModes(const wxVideoMode& mode) const
{
    //Convenience...
    Display* pDisplay = (Display*) wxGetDisplay(); //default display
    int nScreen = DefaultScreen(pDisplay); //default screen of (default) display...

    //Some variables..
    XF86VidModeModeInfo** ppXModes; //Enumerated Modes (Don't forget XFree() :))
    int nNumModes; //Number of modes enumerated....

    wxArrayVideoModes Modes; //modes to return...

    if (XF86VidModeGetAllModeLines(pDisplay, nScreen, &nNumModes, &ppXModes) == TRUE)
    {
        for (int i = 0; i < nNumModes; ++i)
        {
            if (mode == wxDefaultVideoMode || //According to display.h All modes valid if dafault mode...
                mode.Matches(wxCVM((*ppXModes[i]))) ) //...?
            {
                Modes.Add(wxCVM((*ppXModes[i])));
            }
            wxClearXVM((*ppXModes[i]));
        //  XFree(ppXModes[i]); //supposed to free?
        }
        XFree(ppXModes);
    }
    else //OOPS!
    {
        wxLogSysError(_("Failed to enumerate video modes"));
    }

    return Modes;
}

wxVideoMode wxDisplayImplX11::GetCurrentMode() const
{
  XF86VidModeModeLine VM;
  int nDotClock;
  XF86VidModeGetModeLine((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()),
                         &nDotClock, &VM);
  wxClearXVM(VM);
  return wxCVM2(VM, nDotClock);
}

bool wxDisplayImplX11::ChangeMode(const wxVideoMode& mode)
{
    XF86VidModeModeInfo** ppXModes; //Enumerated Modes (Don't forget XFree() :))
    int nNumModes; //Number of modes enumerated....

    if( !XF86VidModeGetAllModeLines((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()), &nNumModes, &ppXModes) )
    {
        wxLogSysError(_("Failed to change video mode"));
        return false;
    }

    bool bRet = false;
    if (mode == wxDefaultVideoMode)
    {
        bRet = XF86VidModeSwitchToMode((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()),
                     ppXModes[0]) == TRUE;

        for (int i = 0; i < nNumModes; ++i)
        {
            wxClearXVM((*ppXModes[i]));
        //  XFree(ppXModes[i]); //supposed to free?
        }
    }
    else
    {
        for (int i = 0; i < nNumModes; ++i)
        {
            if (!bRet &&
                ppXModes[i]->hdisplay == mode.w &&
                ppXModes[i]->vdisplay == mode.h &&
                wxCRR((*ppXModes[i])) == mode.refresh)
            {
                //switch!
                bRet = XF86VidModeSwitchToMode((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()),
                         ppXModes[i]) == TRUE;
            }
            wxClearXVM((*ppXModes[i]));
        //  XFree(ppXModes[i]); //supposed to free?
        }
    }

    XFree(ppXModes);

    return bRet;
}


#else // !HAVE_X11_EXTENSIONS_XF86VMODE_H

wxArrayVideoModes wxDisplayImplX11::GetModes(const wxVideoMode& modeMatch) const
{
    int count_return;
    int* depths = XListDepths((Display*)wxGetDisplay(), 0, &count_return);
    wxArrayVideoModes modes;
    if ( depths )
    {
        for ( int x = 0; x < count_return; ++x )
        {
            wxVideoMode mode(m_rect.GetWidth(), m_rect.GetHeight(), depths[x]);
            if ( mode.Matches(modeMatch) )
            {
                modes.Add(modeMatch);
            }
        }

        XFree(depths);
    }
    return modes;
}

wxVideoMode wxDisplayImplX11::GetCurrentMode() const
{
    // Not implemented
    return wxVideoMode();
}

bool wxDisplayImplX11::ChangeMode(const wxVideoMode& WXUNUSED(mode))
{
    // Not implemented
    return false;
}

#endif // !HAVE_X11_EXTENSIONS_XF86VMODE_H

// ============================================================================
// wxDisplay::CreateFactory()
// ============================================================================

/* static */ wxDisplayFactory *wxDisplay::CreateFactory()
{
    if ( XineramaIsActive((Display*)wxGetDisplay()) )
    {
        return new wxDisplayFactoryX11;
    }

    return new wxDisplayFactorySingle;
}

#endif /* wxUSE_DISPLAY */

#include "wx/utils.h"

#if wxUSE_LIBHILDON

void wxClientDisplayRect(int *x, int *y, int *width, int *height)
{
    // TODO: don't hardcode display size
    if ( x )
        *x = 0;
    if ( y )
        *y = 0;
    if ( width )
        *width = 672;
    if ( height )
        *height = 396;
}

#else // !wxUSE_LIBHILDON

#include "wx/log.h"

#include <X11/Xlib.h>
#include <X11/Xatom.h>

// TODO: make this a full-fledged class and move to a public header
class wxX11Ptr
{
public:
    wxX11Ptr(void *ptr = NULL) : m_ptr(ptr) { }
    ~wxX11Ptr() { if ( m_ptr ) XFree(m_ptr); }

private:
    void *m_ptr;

    DECLARE_NO_COPY_CLASS(wxX11Ptr)
};

// NB: this function is implemented using X11 and not GDK calls as it's shared
//     by wxGTK[12], wxX11 and wxMotif ports
void wxClientDisplayRect(int *x, int *y, int *width, int *height)
{
    Display * const dpy = wxGetX11Display();
    wxCHECK_RET( dpy, _T("can't be called before initializing the GUI") );

    const Atom atomWorkArea = XInternAtom(dpy, "_NET_WORKAREA", True);
    if ( atomWorkArea )
    {
        long *workareas = NULL;
        unsigned long numItems;
        unsigned long bytesRemaining;
        Atom actualType;
        int format;

        if ( XGetWindowProperty
             (
                dpy,
                XDefaultRootWindow(dpy),
                atomWorkArea,
                0,                          // offset of data to retrieve
                4,                          // number of items to retrieve
                False,                      // don't delete property
                XA_CARDINAL,                // type of the items to get
                &actualType,
                &format,
                &numItems,
                &bytesRemaining,
                (unsigned char **)&workareas
             ) == Success && workareas )
        {
            wxX11Ptr x11ptr(workareas); // ensure it will be freed

            // check that we retrieved the property of the expected type and
            // that we did get back 4 longs (32 is the format for long), as
            // requested
            if ( actualType != XA_CARDINAL ||
                    format != 32 ||
                        numItems != 4 )
            {
                wxLogDebug(_T("XGetWindowProperty(\"_NET_WORKAREA\") failed"));
                return;
            }

            if ( x )
                *x = workareas[0];
            if ( y )
                *y = workareas[1];
            if ( width )
                *width = workareas[2];
            if ( height )
                *height = workareas[3];

            return;
        }
    }

    // if we get here, _NET_WORKAREA is not supported so return the entire
    // screen size as fall back
    if (x)
        *x = 0;
    if (y)
        *y = 0;
    wxDisplaySize(width, height);
}

#endif // wxUSE_LIBHILDON/!wxUSE_LIBHILDON
Commit	Line	Data
	1	///////////////////////////////////////////////////////////////////////////
	2	// Name: src/unix/displayx11.cpp
	3	// Purpose: Unix/X11 implementation of wxDisplay class
	4	// Author: Brian Victor, Vadim Zeitlin
	5	// Modified by:
	6	// Created: 12/05/02
	7	// RCS-ID: $Id$
	8	// Copyright: (c) wxWidgets team
	9	// Licence: wxWindows licence
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	// ============================================================================
	13	// declarations
	14	// ============================================================================
	15
	16	// ----------------------------------------------------------------------------
	17	// headers
	18	// ----------------------------------------------------------------------------
	19
	20	// For compilers that support precompilation, includes "wx.h".
	21	#include "wx/wxprec.h"
	22
	23	#ifdef __BORLANDC__
	24	#pragma hdrstop
	25	#endif
	26
	27	#if wxUSE_DISPLAY
	28
	29	#include "wx/display.h"
	30
	31	#ifndef WX_PRECOMP
	32	#include "wx/dynarray.h"
	33	#include "wx/gdicmn.h"
	34	#include "wx/string.h"
	35	#include "wx/utils.h"
	36	#include "wx/intl.h"
	37	#include "wx/log.h"
	38	#endif /* WX_PRECOMP */
	39
	40	#include "wx/display_impl.h"
	41
	42	/* These must be included after the wx files. Otherwise the Data macro in
	43	* Xlibint.h conflicts with a function declaration in wx/list.h. */
	44	extern "C"
	45	{
	46	#include <X11/Xlib.h>
	47	#include <X11/Xlibint.h>
	48
	49	#include <X11/extensions/Xinerama.h>
	50	#ifdef HAVE_X11_EXTENSIONS_XF86VMODE_H
	51	#include <X11/extensions/xf86vmode.h>
	52	#endif
	53	}
	54
	55	// ----------------------------------------------------------------------------
	56	// helper class to automatically free XineramaQueryScreens() return value
	57	// ----------------------------------------------------------------------------
	58
	59	class ScreensInfo
	60	{
	61	public:
	62	ScreensInfo()
	63	{
	64	m_screens = XineramaQueryScreens((Display *)wxGetDisplay(), &m_num);
	65	}
	66
	67	~ScreensInfo()
	68	{
	69	XFree(m_screens);
	70	}
	71
	72	operator const XineramaScreenInfo *() const { return m_screens; }
	73
	74	unsigned GetCount() const { return wx_static_cast(unsigned, m_num); }
	75
	76	private:
	77	XineramaScreenInfo *m_screens;
	78	int m_num;
	79	};
	80
	81	// ----------------------------------------------------------------------------
	82	// display and display factory classes
	83	// ----------------------------------------------------------------------------
	84
	85	class WXDLLEXPORT wxDisplayImplX11 : public wxDisplayImpl
	86	{
	87	public:
	88	wxDisplayImplX11(unsigned n, const XineramaScreenInfo& info)
	89	: wxDisplayImpl(n),
	90	m_rect(info.x_org, info.y_org, info.width, info.height)
	91	{
	92	}
	93
	94	virtual wxRect GetGeometry() const { return m_rect; }
	95	virtual wxRect GetClientArea() const
	96	{
	97	// we intentionally don't cache the result here because the client
	98	// display area may change (e.g. the user resized or hid a panel) and
	99	// we don't currently react to its changes
	100	return IsPrimary() ? wxGetClientDisplayRect() : m_rect;
	101	}
	102
	103	virtual wxString GetName() const { return wxString(); }
	104
	105	virtual wxArrayVideoModes GetModes(const wxVideoMode& mode) const;
	106	virtual wxVideoMode GetCurrentMode() const;
	107	virtual bool ChangeMode(const wxVideoMode& mode);
	108
	109	private:
	110	wxRect m_rect;
	111	int m_depth;
	112
	113	DECLARE_NO_COPY_CLASS(wxDisplayImplX11)
	114	};
	115
	116	class wxDisplayFactoryX11 : public wxDisplayFactory
	117	{
	118	public:
	119	wxDisplayFactoryX11() { }
	120
	121	virtual wxDisplayImpl *CreateDisplay(unsigned n);
	122	virtual unsigned GetCount();
	123	virtual int GetFromPoint(const wxPoint& pt);
	124
	125	protected:
	126	DECLARE_NO_COPY_CLASS(wxDisplayFactoryX11)
	127	};
	128
	129	// ============================================================================
	130	// wxDisplayFactoryX11 implementation
	131	// ============================================================================
	132
	133	unsigned wxDisplayFactoryX11::GetCount()
	134	{
	135	return ScreensInfo().GetCount();
	136	}
	137
	138	int wxDisplayFactoryX11::GetFromPoint(const wxPoint& p)
	139	{
	140	ScreensInfo screens;
	141
	142	const unsigned numscreens(screens.GetCount());
	143	for ( unsigned i = 0; i < numscreens; ++i )
	144	{
	145	const XineramaScreenInfo& s = screens[i];
	146	if ( p.x >= s.x_org && p.x < s.x_org + s.width &&
	147	p.y >= s.y_org && p.y < s.y_org + s.height )
	148	{
	149	return i;
	150	}
	151	}
	152
	153	return wxNOT_FOUND;
	154	}
	155
	156	wxDisplayImpl *wxDisplayFactoryX11::CreateDisplay(unsigned n)
	157	{
	158	ScreensInfo screens;
	159
	160	return n < screens.GetCount() ? new wxDisplayImplX11(n, screens[n]) : NULL;
	161	}
	162
	163	// ============================================================================
	164	// wxDisplayImplX11 implementation
	165	// ============================================================================
	166
	167	#ifdef HAVE_X11_EXTENSIONS_XF86VMODE_H
	168
	169	//
	170	// See (http://www.xfree86.org/4.2.0/XF86VidModeDeleteModeLine.3.html) for more
	171	// info about xf86 video mode extensions
	172	//
	173
	174	//free private data common to x (usually s3) servers
	175	#define wxClearXVM(vm) if(vm.privsize) XFree(vm.c_private)
	176
	177	// Correct res rate from GLFW
	178	#define wxCRR2(v,dc) (int) (((1000.0f * (float) dc) /PIXELS PER SECOND /) / ((float) v.htotal * v.vtotal /PIXELS PER FRAME/) + 0.5f)
	179	#define wxCRR(v) wxCRR2(v,v.dotclock)
	180	#define wxCVM2(v, dc) wxVideoMode(v.hdisplay, v.vdisplay, DefaultDepth((Display)wxGetDisplay(), DefaultScreen((Display)wxGetDisplay())), wxCRR2(v,dc))
	181	#define wxCVM(v) wxCVM2(v, v.dotclock)
	182
	183	wxArrayVideoModes wxDisplayImplX11::GetModes(const wxVideoMode& mode) const
	184	{
	185	//Convenience...
	186	Display* pDisplay = (Display*) wxGetDisplay(); //default display
	187	int nScreen = DefaultScreen(pDisplay); //default screen of (default) display...
	188
	189	//Some variables..
	190	XF86VidModeModeInfo** ppXModes; //Enumerated Modes (Don't forget XFree() :))
	191	int nNumModes; //Number of modes enumerated....
	192
	193	wxArrayVideoModes Modes; //modes to return...
	194
	195	if (XF86VidModeGetAllModeLines(pDisplay, nScreen, &nNumModes, &ppXModes) == TRUE)
	196	{
	197	for (int i = 0; i < nNumModes; ++i)
	198	{
	199	if (mode == wxDefaultVideoMode \|\| //According to display.h All modes valid if dafault mode...
	200	mode.Matches(wxCVM((*ppXModes[i]))) ) //...?
	201	{
	202	Modes.Add(wxCVM((*ppXModes[i])));
	203	}
	204	wxClearXVM((*ppXModes[i]));
	205	// XFree(ppXModes[i]); //supposed to free?
	206	}
	207	XFree(ppXModes);
	208	}
	209	else //OOPS!
	210	{
	211	wxLogSysError(_("Failed to enumerate video modes"));
	212	}
	213
	214	return Modes;
	215	}
	216
	217	wxVideoMode wxDisplayImplX11::GetCurrentMode() const
	218	{
	219	XF86VidModeModeLine VM;
	220	int nDotClock;
	221	XF86VidModeGetModeLine((Display)wxGetDisplay(), DefaultScreen((Display)wxGetDisplay()),
	222	&nDotClock, &VM);
	223	wxClearXVM(VM);
	224	return wxCVM2(VM, nDotClock);
	225	}
	226
	227	bool wxDisplayImplX11::ChangeMode(const wxVideoMode& mode)
	228	{
	229	XF86VidModeModeInfo** ppXModes; //Enumerated Modes (Don't forget XFree() :))
	230	int nNumModes; //Number of modes enumerated....
	231
	232	if( !XF86VidModeGetAllModeLines((Display)wxGetDisplay(), DefaultScreen((Display)wxGetDisplay()), &nNumModes, &ppXModes) )
	233	{
	234	wxLogSysError(_("Failed to change video mode"));
	235	return false;
	236	}
	237
	238	bool bRet = false;
	239	if (mode == wxDefaultVideoMode)
	240	{
	241	bRet = XF86VidModeSwitchToMode((Display)wxGetDisplay(), DefaultScreen((Display)wxGetDisplay()),
	242	ppXModes[0]) == TRUE;
	243
	244	for (int i = 0; i < nNumModes; ++i)
	245	{
	246	wxClearXVM((*ppXModes[i]));
	247	// XFree(ppXModes[i]); //supposed to free?
	248	}
	249	}
	250	else
	251	{
	252	for (int i = 0; i < nNumModes; ++i)
	253	{
	254	if (!bRet &&
	255	ppXModes[i]->hdisplay == mode.w &&
	256	ppXModes[i]->vdisplay == mode.h &&
	257	wxCRR((*ppXModes[i])) == mode.refresh)
	258	{
	259	//switch!
	260	bRet = XF86VidModeSwitchToMode((Display)wxGetDisplay(), DefaultScreen((Display)wxGetDisplay()),
	261	ppXModes[i]) == TRUE;
	262	}
	263	wxClearXVM((*ppXModes[i]));
	264	// XFree(ppXModes[i]); //supposed to free?
	265	}
	266	}
	267
	268	XFree(ppXModes);
	269
	270	return bRet;
	271	}
	272
	273
	274	#else // !HAVE_X11_EXTENSIONS_XF86VMODE_H
	275
	276	wxArrayVideoModes wxDisplayImplX11::GetModes(const wxVideoMode& modeMatch) const
	277	{
	278	int count_return;
	279	int* depths = XListDepths((Display*)wxGetDisplay(), 0, &count_return);
	280	wxArrayVideoModes modes;
	281	if ( depths )
	282	{
	283	for ( int x = 0; x < count_return; ++x )
	284	{
	285	wxVideoMode mode(m_rect.GetWidth(), m_rect.GetHeight(), depths[x]);
	286	if ( mode.Matches(modeMatch) )
	287	{
	288	modes.Add(modeMatch);
	289	}
	290	}
	291
	292	XFree(depths);
	293	}
	294	return modes;
	295	}
	296
	297	wxVideoMode wxDisplayImplX11::GetCurrentMode() const
	298	{
	299	// Not implemented
	300	return wxVideoMode();
	301	}
	302
	303	bool wxDisplayImplX11::ChangeMode(const wxVideoMode& WXUNUSED(mode))
	304	{
	305	// Not implemented
	306	return false;
	307	}
	308
	309	#endif // !HAVE_X11_EXTENSIONS_XF86VMODE_H
	310
	311	// ============================================================================
	312	// wxDisplay::CreateFactory()
	313	// ============================================================================
	314
	315	/* static / wxDisplayFactory wxDisplay::CreateFactory()
	316	{
	317	if ( XineramaIsActive((Display*)wxGetDisplay()) )
	318	{
	319	return new wxDisplayFactoryX11;
	320	}
	321
	322	return new wxDisplayFactorySingle;
	323	}
	324
	325	#endif /* wxUSE_DISPLAY */
	326
	327	#include "wx/utils.h"
	328
	329	#if wxUSE_LIBHILDON
	330
	331	void wxClientDisplayRect(int x, int y, int width, int height)
	332	{
	333	// TODO: don't hardcode display size
	334	if ( x )
	335	*x = 0;
	336	if ( y )
	337	*y = 0;
	338	if ( width )
	339	*width = 672;
	340	if ( height )
	341	*height = 396;
	342	}
	343
	344	#else // !wxUSE_LIBHILDON
	345
	346	#include "wx/log.h"
	347
	348	#include <X11/Xlib.h>
	349	#include <X11/Xatom.h>
	350
	351	// TODO: make this a full-fledged class and move to a public header
	352	class wxX11Ptr
	353	{
	354	public:
	355	wxX11Ptr(void *ptr = NULL) : m_ptr(ptr) { }
	356	~wxX11Ptr() { if ( m_ptr ) XFree(m_ptr); }
	357
	358	private:
	359	void *m_ptr;
	360
	361	DECLARE_NO_COPY_CLASS(wxX11Ptr)
	362	};
	363
	364	// NB: this function is implemented using X11 and not GDK calls as it's shared
	365	// by wxGTK[12], wxX11 and wxMotif ports
	366	void wxClientDisplayRect(int x, int y, int width, int height)
	367	{
	368	Display * const dpy = wxGetX11Display();
	369	wxCHECK_RET( dpy, _T("can't be called before initializing the GUI") );
	370
	371	const Atom atomWorkArea = XInternAtom(dpy, "_NET_WORKAREA", True);
	372	if ( atomWorkArea )
	373	{
	374	long *workareas = NULL;
	375	unsigned long numItems;
	376	unsigned long bytesRemaining;
	377	Atom actualType;
	378	int format;
	379
	380	if ( XGetWindowProperty
	381	(
	382	dpy,
	383	XDefaultRootWindow(dpy),
	384	atomWorkArea,
	385	0, // offset of data to retrieve
	386	4, // number of items to retrieve
	387	False, // don't delete property
	388	XA_CARDINAL, // type of the items to get
	389	&actualType,
	390	&format,
	391	&numItems,
	392	&bytesRemaining,
	393	(unsigned char **)&workareas
	394	) == Success && workareas )
	395	{
	396	wxX11Ptr x11ptr(workareas); // ensure it will be freed
	397
	398	// check that we retrieved the property of the expected type and
	399	// that we did get back 4 longs (32 is the format for long), as
	400	// requested
	401	if ( actualType != XA_CARDINAL \|\|
	402	format != 32 \|\|
	403	numItems != 4 )
	404	{
	405	wxLogDebug(_T("XGetWindowProperty(\"_NET_WORKAREA\") failed"));
	406	return;
	407	}
	408
	409	if ( x )
	410	*x = workareas[0];
	411	if ( y )
	412	*y = workareas[1];
	413	if ( width )
	414	*width = workareas[2];
	415	if ( height )
	416	*height = workareas[3];
	417
	418	return;
	419	}
	420	}
	421
	422	// if we get here, _NET_WORKAREA is not supported so return the entire
	423	// screen size as fall back
	424	if (x)
	425	*x = 0;
	426	if (y)
	427	*y = 0;
	428	wxDisplaySize(width, height);
	429	}
	430
	431	#endif // wxUSE_LIBHILDON/!wxUSE_LIBHILDON