src/gtk/cursor.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        src/gtk/cursor.cpp
// Purpose:
// Author:      Robert Roebling
// Id:          $Id$
// Copyright:   (c) 1998 Robert Roebling
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

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

#include "wx/cursor.h"

#ifndef WX_PRECOMP
    #include "wx/app.h"
    #include "wx/utils.h"
    #include "wx/image.h"
    #include "wx/colour.h"
#endif // WX_PRECOMP

#include <gtk/gtk.h>

//-----------------------------------------------------------------------------
// wxCursor
//-----------------------------------------------------------------------------

class wxCursorRefData: public wxObjectRefData
{
  public:

    wxCursorRefData();
    virtual ~wxCursorRefData();

    GdkCursor *m_cursor;
};

wxCursorRefData::wxCursorRefData()
{
    m_cursor = (GdkCursor *) NULL;
}

wxCursorRefData::~wxCursorRefData()
{
    if (m_cursor) gdk_cursor_unref( m_cursor );
}

//-----------------------------------------------------------------------------

#define M_CURSORDATA ((wxCursorRefData *)m_refData)

IMPLEMENT_DYNAMIC_CLASS(wxCursor,wxObject)

wxCursor::wxCursor()
{

}

wxCursor::wxCursor( int cursorId )
{
    m_refData = new wxCursorRefData();

    GdkCursorType gdk_cur = GDK_LEFT_PTR;
    switch (cursorId)
    {
        case wxCURSOR_BLANK:
            {
                static const gchar bits[] = { 0 };
                static /* const -- not in GTK1 */ GdkColor color = { 0, 0, 0, 0 };

                GdkPixmap *pixmap = gdk_bitmap_create_from_data(NULL, bits, 1, 1);
                M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap(pixmap,
                                                                    pixmap,
                                                                    &color,
                                                                    &color,
                                                                    0, 0);
            }
            return;

        case wxCURSOR_ARROW:            // fall through to default
        case wxCURSOR_DEFAULT:          gdk_cur = GDK_LEFT_PTR; break;
        case wxCURSOR_RIGHT_ARROW:      gdk_cur = GDK_RIGHT_PTR; break;
        case wxCURSOR_HAND:             gdk_cur = GDK_HAND1; break;
        case wxCURSOR_CROSS:            gdk_cur = GDK_CROSSHAIR; break;
        case wxCURSOR_SIZEWE:           gdk_cur = GDK_SB_H_DOUBLE_ARROW; break;
        case wxCURSOR_SIZENS:           gdk_cur = GDK_SB_V_DOUBLE_ARROW; break;
        case wxCURSOR_ARROWWAIT:
        case wxCURSOR_WAIT:
        case wxCURSOR_WATCH:            gdk_cur = GDK_WATCH; break;
        case wxCURSOR_SIZING:           gdk_cur = GDK_SIZING; break;
        case wxCURSOR_SPRAYCAN:         gdk_cur = GDK_SPRAYCAN; break;
        case wxCURSOR_IBEAM:            gdk_cur = GDK_XTERM; break;
        case wxCURSOR_PENCIL:           gdk_cur = GDK_PENCIL; break;
        case wxCURSOR_NO_ENTRY:         gdk_cur = GDK_PIRATE; break;
        case wxCURSOR_SIZENWSE:
        case wxCURSOR_SIZENESW:         gdk_cur = GDK_FLEUR; break;
        case wxCURSOR_QUESTION_ARROW:   gdk_cur = GDK_QUESTION_ARROW; break;
        case wxCURSOR_PAINT_BRUSH:      gdk_cur = GDK_SPRAYCAN; break;
        case wxCURSOR_MAGNIFIER:        gdk_cur = GDK_PLUS; break;
        case wxCURSOR_CHAR:             gdk_cur = GDK_XTERM; break;
        case wxCURSOR_LEFT_BUTTON:      gdk_cur = GDK_LEFTBUTTON; break;
        case wxCURSOR_MIDDLE_BUTTON:    gdk_cur = GDK_MIDDLEBUTTON; break;
        case wxCURSOR_RIGHT_BUTTON:     gdk_cur = GDK_RIGHTBUTTON; break;
        case wxCURSOR_BULLSEYE:         gdk_cur = GDK_TARGET; break;

        case wxCURSOR_POINT_LEFT:       gdk_cur = GDK_SB_LEFT_ARROW; break;
        case wxCURSOR_POINT_RIGHT:      gdk_cur = GDK_SB_RIGHT_ARROW; break;
/*
        case wxCURSOR_DOUBLE_ARROW:     gdk_cur = GDK_DOUBLE_ARROW; break;
        case wxCURSOR_CROSS_REVERSE:    gdk_cur = GDK_CROSS_REVERSE; break;
        case wxCURSOR_BASED_ARROW_UP:   gdk_cur = GDK_BASED_ARROW_UP; break;
        case wxCURSOR_BASED_ARROW_DOWN: gdk_cur = GDK_BASED_ARROW_DOWN; break;
*/

        default:
            wxFAIL_MSG(wxT("unsupported cursor type"));
            // will use the standard one
            break;
    }

    M_CURSORDATA->m_cursor = gdk_cursor_new( gdk_cur );
}

extern GtkWidget *wxGetRootWindow();

wxCursor::wxCursor(const char bits[], int width, int  height,
                   int hotSpotX, int hotSpotY,
                   const char maskBits[], const wxColour *fg, const wxColour *bg)
{
    if (!maskBits)
        maskBits = bits;
    if (!fg)
        fg = wxBLACK;
    if (!bg)
        bg = wxWHITE;
    if (hotSpotX < 0 || hotSpotX >= width)
        hotSpotX = 0;
    if (hotSpotY < 0 || hotSpotY >= height)
        hotSpotY = 0;

    GdkBitmap *data = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) bits, width, height );
    GdkBitmap *mask = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) maskBits, width, height);

    m_refData = new wxCursorRefData;
    M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap(
                 data, mask, fg->GetColor(), bg->GetColor(),
                 hotSpotX, hotSpotY );

    g_object_unref (data);
    g_object_unref (mask);
}

#if wxUSE_IMAGE

static void GetHotSpot(const wxImage& image, int& x, int& y)
{
    if (image.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_X))
        x = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X);
    else
        x = 0;

    if (image.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y))
        y = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y);
    else
        y = 0;

    if (x < 0 || x >= image.GetWidth())
        x = 0;
    if (y < 0 || y >= image.GetHeight())
        y = 0;
}

wxCursor::wxCursor( const wxImage & image )
{
    unsigned char * rgbBits = image.GetData();
    int w = image.GetWidth() ;
    int h = image.GetHeight();
    bool bHasMask = image.HasMask();
    int imagebitcount = (w*h)/8;

    if ( gdk_display_supports_cursor_color(gdk_display_get_default()) )
    {
        unsigned char rMask = 0,
                      gMask = 0,
                      bMask = 0;
        if (bHasMask)
        {
            rMask = image.GetMaskRed();
            gMask = image.GetMaskGreen();
            bMask = image.GetMaskBlue();
        }

        GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, true, 8, w, h);
        unsigned char *alpha = image.HasAlpha() ? image.GetAlpha() : NULL;
        unsigned char *out = gdk_pixbuf_get_pixels(pixbuf);
        int rowpad = gdk_pixbuf_get_rowstride(pixbuf) - 4 * w;
        for ( int y = 0; y < h; y++, out += rowpad )
        {
            for ( int x = 0; x < w; x++, out += 4, rgbBits += 3 )
            {
                out[0] = rgbBits[0];
                out[1] = rgbBits[1];
                out[2] = rgbBits[2];
                if (bHasMask &&
                    out[0] == rMask && out[1] == gMask && out[2] == bMask)
                    out[3] = 0;
                else
                    out[3] = alpha ? *alpha : 255;
                if ( alpha )
                    ++alpha;
            }
        }

        int hotSpotX, hotSpotY;
        GetHotSpot(image, hotSpotX, hotSpotY);

        m_refData = new wxCursorRefData;
        M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixbuf
                             (
                              gdk_display_get_default(),
                              pixbuf,
                              hotSpotX, hotSpotY
                             );
        g_object_unref (pixbuf);
        return;
    }

    unsigned char * bits = new unsigned char [imagebitcount];
    unsigned char * maskBits = new unsigned char [imagebitcount];

    int i, j, i8; unsigned char c, cMask;
    for (i=0; i<imagebitcount; i++)
    {
        bits[i] = 0;
        i8 = i * 8;

        cMask = 1;
        for (j=0; j<8; j++)
        {
            // possible overflow if we do the summation first ?
            c = rgbBits[(i8+j)*3]/3 + rgbBits[(i8+j)*3+1]/3 + rgbBits[(i8+j)*3+2]/3;
            //if average value is > mid grey
            if (c>127)
                bits[i] = bits[i] | cMask;
            cMask = cMask * 2;
        }
    }

    unsigned long keyMaskColor;
    if (bHasMask)
    {
        unsigned char
            r = image.GetMaskRed(),
            g = image.GetMaskGreen(),
            b = image.GetMaskBlue();

        for (i=0; i<imagebitcount; i++)
        {
            maskBits[i] = 0x0;
            i8 = i * 8;

            cMask = 1;
            for (j=0; j<8; j++)
            {
                if (rgbBits[(i8+j)*3] != r || rgbBits[(i8+j)*3+1] != g || rgbBits[(i8+j)*3+2] != b)
                    maskBits[i] = maskBits[i] | cMask;
                cMask = cMask * 2;
            }
        }

        keyMaskColor = (r << 16) | (g << 8) | b;
    }
    else // no mask
    {
        for (i=0; i<imagebitcount; i++)
            maskBits[i] = 0xFF;

        // init it to avoid compiler warnings
        keyMaskColor = 0;
    }

    // find the most frequent color(s)
    wxImageHistogram histogram;
    image.ComputeHistogram(histogram);

    // colors as rrggbb
    unsigned long key;
    unsigned long value;

    long colMostFreq = 0;
    unsigned long nMost = 0;
    long colNextMostFreq = 0;
    unsigned long nNext = 0;
    for ( wxImageHistogram::iterator entry = histogram.begin();
          entry != histogram.end();
          ++entry )
    {
        value = entry->second.value;
        key = entry->first;
        if ( !bHasMask || (key != keyMaskColor) )
        {
            if (value > nMost)
            {
                nMost = value;
                colMostFreq = key;
            }
            else if (value > nNext)
            {
                nNext = value;
                colNextMostFreq = key;
            }
        }
    }

    wxColour fg = wxColour ( (unsigned char)(colMostFreq >> 16),
                             (unsigned char)(colMostFreq >> 8),
                             (unsigned char)(colMostFreq) );

    wxColour bg = wxColour ( (unsigned char)(colNextMostFreq >> 16),
                             (unsigned char)(colNextMostFreq >> 8),
                             (unsigned char)(colNextMostFreq) );

    int fg_intensity = fg.Red() + fg.Green() + fg.Blue();
    int bg_intensity = bg.Red() + bg.Green() + bg.Blue();

    if (bg_intensity > fg_intensity)
    {
        //swap fg and bg
        wxColour tmp = fg;
        fg = bg;
        bg = tmp;
    }

    int hotSpotX, hotSpotY;
    GetHotSpot(image, hotSpotX, hotSpotY);

    GdkBitmap *data = gdk_bitmap_create_from_data(wxGetRootWindow()->window,
                                                  (gchar *) bits, w, h);
    GdkBitmap *mask = gdk_bitmap_create_from_data(wxGetRootWindow()->window,
                                                  (gchar *) maskBits, w, h);

    m_refData = new wxCursorRefData;
    M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap
                             (
                                data,
                                mask,
                                fg.GetColor(), bg.GetColor(),
                                hotSpotX, hotSpotY
                             );

    g_object_unref (data);
    g_object_unref (mask);
    delete [] bits;
    delete [] maskBits;
}

#endif // wxUSE_IMAGE

wxCursor::~wxCursor()
{
}

bool wxCursor::IsOk() const
{
    return (m_refData != NULL);
}

GdkCursor *wxCursor::GetCursor() const
{
    return M_CURSORDATA->m_cursor;
}

//-----------------------------------------------------------------------------
// busy cursor routines
//-----------------------------------------------------------------------------

/* Current cursor, in order to hang on to
 * cursor handle when setting the cursor globally */
wxCursor g_globalCursor;

static wxCursor  gs_savedCursor;
static int       gs_busyCount = 0;

const wxCursor &wxBusyCursor::GetStoredCursor()
{
    return gs_savedCursor;
}

const wxCursor wxBusyCursor::GetBusyCursor()
{
    return wxCursor(wxCURSOR_WATCH);
}

void wxEndBusyCursor()
{
    if (--gs_busyCount > 0)
        return;

    wxSetCursor( gs_savedCursor );
    gs_savedCursor = wxNullCursor;

    if (wxTheApp)
        wxTheApp->ProcessIdle();
}

void wxBeginBusyCursor( const wxCursor *WXUNUSED(cursor) )
{
    if (gs_busyCount++ > 0)
        return;

    wxASSERT_MSG( !gs_savedCursor.Ok(),
                  wxT("forgot to call wxEndBusyCursor, will leak memory") );

    gs_savedCursor = g_globalCursor;

    wxSetCursor( wxCursor(wxCURSOR_WATCH) );

    if (wxTheApp)
        wxTheApp->ProcessIdle();

    gdk_flush();
}

bool wxIsBusy()
{
    return gs_busyCount > 0;
}

void wxSetCursor( const wxCursor& cursor )
{
    g_globalCursor = cursor;
    wxTheApp->WakeUpIdle();
}
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: src/gtk/cursor.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	#include "wx/cursor.h"
	14
	15	#ifndef WX_PRECOMP
	16	#include "wx/app.h"
	17	#include "wx/utils.h"
	18	#include "wx/image.h"
	19	#include "wx/colour.h"
	20	#endif // WX_PRECOMP
	21
	22	#include <gtk/gtk.h>
	23
	24	//-----------------------------------------------------------------------------
	25	// wxCursor
	26	//-----------------------------------------------------------------------------
	27
	28	class wxCursorRefData: public wxObjectRefData
	29	{
	30	public:
	31
	32	wxCursorRefData();
	33	virtual ~wxCursorRefData();
	34
	35	GdkCursor *m_cursor;
	36	};
	37
	38	wxCursorRefData::wxCursorRefData()
	39	{
	40	m_cursor = (GdkCursor *) NULL;
	41	}
	42
	43	wxCursorRefData::~wxCursorRefData()
	44	{
	45	if (m_cursor) gdk_cursor_unref( m_cursor );
	46	}
	47
	48	//-----------------------------------------------------------------------------
	49
	50	#define M_CURSORDATA ((wxCursorRefData *)m_refData)
	51
	52	IMPLEMENT_DYNAMIC_CLASS(wxCursor,wxObject)
	53
	54	wxCursor::wxCursor()
	55	{
	56
	57	}
	58
	59	wxCursor::wxCursor( int cursorId )
	60	{
	61	m_refData = new wxCursorRefData();
	62
	63	GdkCursorType gdk_cur = GDK_LEFT_PTR;
	64	switch (cursorId)
	65	{
	66	case wxCURSOR_BLANK:
	67	{
	68	static const gchar bits[] = { 0 };
	69	static /* const -- not in GTK1 */ GdkColor color = { 0, 0, 0, 0 };
	70
	71	GdkPixmap *pixmap = gdk_bitmap_create_from_data(NULL, bits, 1, 1);
	72	M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap(pixmap,
	73	pixmap,
	74	&color,
	75	&color,
	76	0, 0);
	77	}
	78	return;
	79
	80	case wxCURSOR_ARROW: // fall through to default
	81	case wxCURSOR_DEFAULT: gdk_cur = GDK_LEFT_PTR; break;
	82	case wxCURSOR_RIGHT_ARROW: gdk_cur = GDK_RIGHT_PTR; break;
	83	case wxCURSOR_HAND: gdk_cur = GDK_HAND1; break;
	84	case wxCURSOR_CROSS: gdk_cur = GDK_CROSSHAIR; break;
	85	case wxCURSOR_SIZEWE: gdk_cur = GDK_SB_H_DOUBLE_ARROW; break;
	86	case wxCURSOR_SIZENS: gdk_cur = GDK_SB_V_DOUBLE_ARROW; break;
	87	case wxCURSOR_ARROWWAIT:
	88	case wxCURSOR_WAIT:
	89	case wxCURSOR_WATCH: gdk_cur = GDK_WATCH; break;
	90	case wxCURSOR_SIZING: gdk_cur = GDK_SIZING; break;
	91	case wxCURSOR_SPRAYCAN: gdk_cur = GDK_SPRAYCAN; break;
	92	case wxCURSOR_IBEAM: gdk_cur = GDK_XTERM; break;
	93	case wxCURSOR_PENCIL: gdk_cur = GDK_PENCIL; break;
	94	case wxCURSOR_NO_ENTRY: gdk_cur = GDK_PIRATE; break;
	95	case wxCURSOR_SIZENWSE:
	96	case wxCURSOR_SIZENESW: gdk_cur = GDK_FLEUR; break;
	97	case wxCURSOR_QUESTION_ARROW: gdk_cur = GDK_QUESTION_ARROW; break;
	98	case wxCURSOR_PAINT_BRUSH: gdk_cur = GDK_SPRAYCAN; break;
	99	case wxCURSOR_MAGNIFIER: gdk_cur = GDK_PLUS; break;
	100	case wxCURSOR_CHAR: gdk_cur = GDK_XTERM; break;
	101	case wxCURSOR_LEFT_BUTTON: gdk_cur = GDK_LEFTBUTTON; break;
	102	case wxCURSOR_MIDDLE_BUTTON: gdk_cur = GDK_MIDDLEBUTTON; break;
	103	case wxCURSOR_RIGHT_BUTTON: gdk_cur = GDK_RIGHTBUTTON; break;
	104	case wxCURSOR_BULLSEYE: gdk_cur = GDK_TARGET; break;
	105
	106	case wxCURSOR_POINT_LEFT: gdk_cur = GDK_SB_LEFT_ARROW; break;
	107	case wxCURSOR_POINT_RIGHT: gdk_cur = GDK_SB_RIGHT_ARROW; break;
	108	/*
	109	case wxCURSOR_DOUBLE_ARROW: gdk_cur = GDK_DOUBLE_ARROW; break;
	110	case wxCURSOR_CROSS_REVERSE: gdk_cur = GDK_CROSS_REVERSE; break;
	111	case wxCURSOR_BASED_ARROW_UP: gdk_cur = GDK_BASED_ARROW_UP; break;
	112	case wxCURSOR_BASED_ARROW_DOWN: gdk_cur = GDK_BASED_ARROW_DOWN; break;
	113	*/
	114
	115	default:
	116	wxFAIL_MSG(wxT("unsupported cursor type"));
	117	// will use the standard one
	118	break;
	119	}
	120
	121	M_CURSORDATA->m_cursor = gdk_cursor_new( gdk_cur );
	122	}
	123
	124	extern GtkWidget *wxGetRootWindow();
	125
	126	wxCursor::wxCursor(const char bits[], int width, int height,
	127	int hotSpotX, int hotSpotY,
	128	const char maskBits[], const wxColour fg, const wxColour bg)
	129	{
	130	if (!maskBits)
	131	maskBits = bits;
	132	if (!fg)
	133	fg = wxBLACK;
	134	if (!bg)
	135	bg = wxWHITE;
	136	if (hotSpotX < 0 \|\| hotSpotX >= width)
	137	hotSpotX = 0;
	138	if (hotSpotY < 0 \|\| hotSpotY >= height)
	139	hotSpotY = 0;
	140
	141	GdkBitmap data = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar ) bits, width, height );
	142	GdkBitmap mask = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar ) maskBits, width, height);
	143
	144	m_refData = new wxCursorRefData;
	145	M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap(
	146	data, mask, fg->GetColor(), bg->GetColor(),
	147	hotSpotX, hotSpotY );
	148
	149	g_object_unref (data);
	150	g_object_unref (mask);
	151	}
	152
	153	#if wxUSE_IMAGE
	154
	155	static void GetHotSpot(const wxImage& image, int& x, int& y)
	156	{
	157	if (image.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_X))
	158	x = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X);
	159	else
	160	x = 0;
	161
	162	if (image.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y))
	163	y = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y);
	164	else
	165	y = 0;
	166
	167	if (x < 0 \|\| x >= image.GetWidth())
	168	x = 0;
	169	if (y < 0 \|\| y >= image.GetHeight())
	170	y = 0;
	171	}
	172
	173	wxCursor::wxCursor( const wxImage & image )
	174	{
	175	unsigned char * rgbBits = image.GetData();
	176	int w = image.GetWidth() ;
	177	int h = image.GetHeight();
	178	bool bHasMask = image.HasMask();
	179	int imagebitcount = (w*h)/8;
	180
	181	if ( gdk_display_supports_cursor_color(gdk_display_get_default()) )
	182	{
	183	unsigned char rMask = 0,
	184	gMask = 0,
	185	bMask = 0;
	186	if (bHasMask)
	187	{
	188	rMask = image.GetMaskRed();
	189	gMask = image.GetMaskGreen();
	190	bMask = image.GetMaskBlue();
	191	}
	192
	193	GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, true, 8, w, h);
	194	unsigned char *alpha = image.HasAlpha() ? image.GetAlpha() : NULL;
	195	unsigned char *out = gdk_pixbuf_get_pixels(pixbuf);
	196	int rowpad = gdk_pixbuf_get_rowstride(pixbuf) - 4 * w;
	197	for ( int y = 0; y < h; y++, out += rowpad )
	198	{
	199	for ( int x = 0; x < w; x++, out += 4, rgbBits += 3 )
	200	{
	201	out[0] = rgbBits[0];
	202	out[1] = rgbBits[1];
	203	out[2] = rgbBits[2];
	204	if (bHasMask &&
	205	out[0] == rMask && out[1] == gMask && out[2] == bMask)
	206	out[3] = 0;
	207	else
	208	out[3] = alpha ? *alpha : 255;
	209	if ( alpha )
	210	++alpha;
	211	}
	212	}
	213
	214	int hotSpotX, hotSpotY;
	215	GetHotSpot(image, hotSpotX, hotSpotY);
	216
	217	m_refData = new wxCursorRefData;
	218	M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixbuf
	219	(
	220	gdk_display_get_default(),
	221	pixbuf,
	222	hotSpotX, hotSpotY
	223	);
	224	g_object_unref (pixbuf);
	225	return;
	226	}
	227
	228	unsigned char * bits = new unsigned char [imagebitcount];
	229	unsigned char * maskBits = new unsigned char [imagebitcount];
	230
	231	int i, j, i8; unsigned char c, cMask;
	232	for (i=0; i<imagebitcount; i++)
	233	{
	234	bits[i] = 0;
	235	i8 = i * 8;
	236
	237	cMask = 1;
	238	for (j=0; j<8; j++)
	239	{
	240	// possible overflow if we do the summation first ?
	241	c = rgbBits[(i8+j)3]/3 + rgbBits[(i8+j)3+1]/3 + rgbBits[(i8+j)*3+2]/3;
	242	//if average value is > mid grey
	243	if (c>127)
	244	bits[i] = bits[i] \| cMask;
	245	cMask = cMask * 2;
	246	}
	247	}
	248
	249	unsigned long keyMaskColor;
	250	if (bHasMask)
	251	{
	252	unsigned char
	253	r = image.GetMaskRed(),
	254	g = image.GetMaskGreen(),
	255	b = image.GetMaskBlue();
	256
	257	for (i=0; i<imagebitcount; i++)
	258	{
	259	maskBits[i] = 0x0;
	260	i8 = i * 8;
	261
	262	cMask = 1;
	263	for (j=0; j<8; j++)
	264	{
	265	if (rgbBits[(i8+j)3] != r \|\| rgbBits[(i8+j)3+1] != g \|\| rgbBits[(i8+j)*3+2] != b)
	266	maskBits[i] = maskBits[i] \| cMask;
	267	cMask = cMask * 2;
	268	}
	269	}
	270
	271	keyMaskColor = (r << 16) \| (g << 8) \| b;
	272	}
	273	else // no mask
	274	{
	275	for (i=0; i<imagebitcount; i++)
	276	maskBits[i] = 0xFF;
	277
	278	// init it to avoid compiler warnings
	279	keyMaskColor = 0;
	280	}
	281
	282	// find the most frequent color(s)
	283	wxImageHistogram histogram;
	284	image.ComputeHistogram(histogram);
	285
	286	// colors as rrggbb
	287	unsigned long key;
	288	unsigned long value;
	289
	290	long colMostFreq = 0;
	291	unsigned long nMost = 0;
	292	long colNextMostFreq = 0;
	293	unsigned long nNext = 0;
	294	for ( wxImageHistogram::iterator entry = histogram.begin();
	295	entry != histogram.end();
	296	++entry )
	297	{
	298	value = entry->second.value;
	299	key = entry->first;
	300	if ( !bHasMask \|\| (key != keyMaskColor) )
	301	{
	302	if (value > nMost)
	303	{
	304	nMost = value;
	305	colMostFreq = key;
	306	}
	307	else if (value > nNext)
	308	{
	309	nNext = value;
	310	colNextMostFreq = key;
	311	}
	312	}
	313	}
	314
	315	wxColour fg = wxColour ( (unsigned char)(colMostFreq >> 16),
	316	(unsigned char)(colMostFreq >> 8),
	317	(unsigned char)(colMostFreq) );
	318
	319	wxColour bg = wxColour ( (unsigned char)(colNextMostFreq >> 16),
	320	(unsigned char)(colNextMostFreq >> 8),
	321	(unsigned char)(colNextMostFreq) );
	322
	323	int fg_intensity = fg.Red() + fg.Green() + fg.Blue();
	324	int bg_intensity = bg.Red() + bg.Green() + bg.Blue();
	325
	326	if (bg_intensity > fg_intensity)
	327	{
	328	//swap fg and bg
	329	wxColour tmp = fg;
	330	fg = bg;
	331	bg = tmp;
	332	}
	333
	334	int hotSpotX, hotSpotY;
	335	GetHotSpot(image, hotSpotX, hotSpotY);
	336
	337	GdkBitmap *data = gdk_bitmap_create_from_data(wxGetRootWindow()->window,
	338	(gchar *) bits, w, h);
	339	GdkBitmap *mask = gdk_bitmap_create_from_data(wxGetRootWindow()->window,
	340	(gchar *) maskBits, w, h);
	341
	342	m_refData = new wxCursorRefData;
	343	M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap
	344	(
	345	data,
	346	mask,
	347	fg.GetColor(), bg.GetColor(),
	348	hotSpotX, hotSpotY
	349	);
	350
	351	g_object_unref (data);
	352	g_object_unref (mask);
	353	delete [] bits;
	354	delete [] maskBits;
	355	}
	356
	357	#endif // wxUSE_IMAGE
	358
	359	wxCursor::~wxCursor()
	360	{
	361	}
	362
	363	bool wxCursor::IsOk() const
	364	{
	365	return (m_refData != NULL);
	366	}
	367
	368	GdkCursor *wxCursor::GetCursor() const
	369	{
	370	return M_CURSORDATA->m_cursor;
	371	}
	372
	373	//-----------------------------------------------------------------------------
	374	// busy cursor routines
	375	//-----------------------------------------------------------------------------
	376
	377	/* Current cursor, in order to hang on to
	378	* cursor handle when setting the cursor globally */
	379	wxCursor g_globalCursor;
	380
	381	static wxCursor gs_savedCursor;
	382	static int gs_busyCount = 0;
	383
	384	const wxCursor &wxBusyCursor::GetStoredCursor()
	385	{
	386	return gs_savedCursor;
	387	}
	388
	389	const wxCursor wxBusyCursor::GetBusyCursor()
	390	{
	391	return wxCursor(wxCURSOR_WATCH);
	392	}
	393
	394	void wxEndBusyCursor()
	395	{
	396	if (--gs_busyCount > 0)
	397	return;
	398
	399	wxSetCursor( gs_savedCursor );
	400	gs_savedCursor = wxNullCursor;
	401
	402	if (wxTheApp)
	403	wxTheApp->ProcessIdle();
	404	}
	405
	406	void wxBeginBusyCursor( const wxCursor *WXUNUSED(cursor) )
	407	{
	408	if (gs_busyCount++ > 0)
	409	return;
	410
	411	wxASSERT_MSG( !gs_savedCursor.Ok(),
	412	wxT("forgot to call wxEndBusyCursor, will leak memory") );
	413
	414	gs_savedCursor = g_globalCursor;
	415
	416	wxSetCursor( wxCursor(wxCURSOR_WATCH) );
	417
	418	if (wxTheApp)
	419	wxTheApp->ProcessIdle();
	420
	421	gdk_flush();
	422	}
	423
	424	bool wxIsBusy()
	425	{
	426	return gs_busyCount > 0;
	427	}
	428
	429	void wxSetCursor( const wxCursor& cursor )
	430	{
	431	g_globalCursor = cursor;
	432	wxTheApp->WakeUpIdle();
	433	}