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/window.h"
    #include "wx/app.h"
    #include "wx/image.h"
    #include "wx/bitmap.h"
    #include "wx/log.h"
#endif // WX_PRECOMP

#include <gtk/gtk.h>

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

class wxCursorRefData: public wxGDIRefData
{
public:
    wxCursorRefData();
    virtual ~wxCursorRefData();

    virtual bool IsOk() const { return m_cursor != NULL; }

    GdkCursor *m_cursor;
};

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

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

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

#define M_CURSORDATA static_cast<wxCursorRefData*>(m_refData)

IMPLEMENT_DYNAMIC_CLASS(wxCursor, wxGDIObject)

wxCursor::wxCursor()
{
}

void wxCursor::InitFromStock( wxStockCursor cursorId )
{
    m_refData = new wxCursorRefData();

    GdkCursorType gdk_cur = GDK_LEFT_PTR;
    switch (cursorId)
    {
        case wxCURSOR_BLANK:
            {
                const char bits[] = { 0 };
                const 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);
                g_object_unref(pixmap);
            }
            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_HAND2; 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 );
}


// used in the following two ctors
extern GtkWidget *wxGetRootWindow();

wxCursor::wxCursor(const wxString& cursor_file,
                   wxBitmapType type,
                   int hotSpotX, int hotSpotY)
{
    /* TODO: test this code! */

    // Must be an XBM file
    if (type != wxBITMAP_TYPE_XPM) {
        wxLogError("Invalid cursor bitmap type '%d'", type);
        return;
    }

    // load the XPM
    GdkBitmap *mask = NULL;
    GdkBitmap *data = gdk_pixmap_create_from_xpm( wxGetRootWindow()->window,
                                                  &mask, NULL, cursor_file.mb_str() );
    if (!data)
        return;

    // check given hotspot
    gint w, h;
    gdk_drawable_get_size( data, &w, &h );
    if (hotSpotX < 0 || hotSpotX >= w)
        hotSpotX = 0;
    if (hotSpotY < 0 || hotSpotY >= h)
        hotSpotY = 0;

    // create the real cursor
    m_refData = new wxCursorRefData;
    M_CURSORDATA->m_cursor =
        gdk_cursor_new_from_pixmap( data, mask,
                                    wxBLACK->GetColor(), wxWHITE->GetColor(),
                                    hotSpotX, hotSpotY );

    g_object_unref (data);
    g_object_unref (mask);
}

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 )
{
    int w = image.GetWidth() ;
    int h = image.GetHeight();
    bool bHasMask = image.HasMask();
    int hotSpotX, hotSpotY;
    GetHotSpot(image, hotSpotX, hotSpotY);
    m_refData = new wxCursorRefData;
    wxImage image_copy(image);

    GdkDisplay* display = gdk_drawable_get_display(wxGetRootWindow()->window);
    if (gdk_display_supports_cursor_color(display))
    {
        if (!image.HasAlpha())
        {
            // add alpha, so wxBitmap will convert to pixbuf format
            image_copy.InitAlpha();
        }
        wxBitmap bitmap(image_copy);
        wxASSERT(bitmap.HasPixbuf());
        M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixbuf
                             (
                              display,
                              bitmap.GetPixbuf(),
                              hotSpotX, hotSpotY
                             );
        return;
    }

    unsigned long keyMaskColor = 0;
    GdkPixmap* mask;
    if (bHasMask)
    {
        keyMaskColor = wxImageHistogram::MakeKey(
            image.GetMaskRed(), image.GetMaskGreen(), image.GetMaskBlue());
        // get mask before image is modified
        wxBitmap bitmap(image, 1);
        mask = bitmap.GetMask()->GetBitmap();
        g_object_ref(mask);
    }
    else
    {
        const int size = ((w + 7) / 8) * h;
        char* bits = new char[size];
        memset(bits, 0xff, size);
        mask = gdk_bitmap_create_from_data(
            wxGetRootWindow()->window, bits, w, h);
        delete[] bits;
    }

    // modify image so wxBitmap can be used to convert to pixmap
    image_copy.SetMask(false);
    int i, j;
    wxByte* data = image_copy.GetData();
    for (j = 0; j < h; j++)
    {
        for (i = 0; i < w; i++, data += 3)
        {
            //if average value is > mid grey
            if (int(data[0]) + data[1] + data[2] >= 3 * 128)
            {
                // wxBitmap only converts (255,255,255) to white
                data[0] = 255;
                data[1] = 255;
                data[2] = 255;
            }
        }
    }
    wxBitmap bitmap(image_copy, 1);

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

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

    M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap
                             (
                                bitmap.GetPixmap(),
                                mask,
                                fg.GetColor(), bg.GetColor(),
                                hotSpotX, hotSpotY
                             );

    g_object_unref (mask);
}

#endif // wxUSE_IMAGE

wxCursor::~wxCursor()
{
}

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

wxGDIRefData *wxCursor::CreateGDIRefData() const
{
    return new wxCursorRefData;
}

wxGDIRefData *wxCursor::CloneGDIRefData(const wxGDIRefData *data) const
{
    return new wxCursorRefData(*static_cast<const wxCursorRefData *>(data));
}

//-----------------------------------------------------------------------------
// 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);
}

static void InternalIdle(const wxWindowList& list, GdkDisplay*& display)
{
    wxWindowList::const_iterator i = list.begin();
    for (size_t n = list.size(); n--; ++i)
    {
        wxWindow* win = *i;
        if (display == NULL && win->m_widget && win->m_widget->window)
            display = gdk_drawable_get_display(win->m_widget->window);
        win->OnInternalIdle();
        InternalIdle(win->GetChildren(), display);
    }
}

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

    g_globalCursor = gs_savedCursor;
    gs_savedCursor = wxNullCursor;
    GdkDisplay* unused = NULL;
    InternalIdle(wxTopLevelWindows, unused);
}

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

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

    gs_savedCursor = g_globalCursor;
    g_globalCursor = *cursor;
    GdkDisplay* display = NULL;
    InternalIdle(wxTopLevelWindows, display);
    if (display)
        gdk_display_flush(display);
}

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/window.h"
	17	#include "wx/app.h"
	18	#include "wx/image.h"
	19	#include "wx/bitmap.h"
	20	#include "wx/log.h"
	21	#endif // WX_PRECOMP
	22
	23	#include <gtk/gtk.h>
	24
	25	//-----------------------------------------------------------------------------
	26	// wxCursor
	27	//-----------------------------------------------------------------------------
	28
	29	class wxCursorRefData: public wxGDIRefData
	30	{
	31	public:
	32	wxCursorRefData();
	33	virtual ~wxCursorRefData();
	34
	35	virtual bool IsOk() const { return m_cursor != NULL; }
	36
	37	GdkCursor *m_cursor;
	38	};
	39
	40	wxCursorRefData::wxCursorRefData()
	41	{
	42	m_cursor = (GdkCursor *) NULL;
	43	}
	44
	45	wxCursorRefData::~wxCursorRefData()
	46	{
	47	if (m_cursor) gdk_cursor_unref( m_cursor );
	48	}
	49
	50	//-----------------------------------------------------------------------------
	51
	52	#define M_CURSORDATA static_cast<wxCursorRefData*>(m_refData)
	53
	54	IMPLEMENT_DYNAMIC_CLASS(wxCursor, wxGDIObject)
	55
	56	wxCursor::wxCursor()
	57	{
	58	}
	59
	60	void wxCursor::InitFromStock( wxStockCursor cursorId )
	61	{
	62	m_refData = new wxCursorRefData();
	63
	64	GdkCursorType gdk_cur = GDK_LEFT_PTR;
	65	switch (cursorId)
	66	{
	67	case wxCURSOR_BLANK:
	68	{
	69	const char bits[] = { 0 };
	70	const GdkColor color = { 0, 0, 0, 0 };
	71
	72	GdkPixmap *pixmap = gdk_bitmap_create_from_data(NULL, bits, 1, 1);
	73	M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap(pixmap,
	74	pixmap,
	75	&color,
	76	&color,
	77	0, 0);
	78	g_object_unref(pixmap);
	79	}
	80	return;
	81
	82	case wxCURSOR_ARROW: // fall through to default
	83	case wxCURSOR_DEFAULT: gdk_cur = GDK_LEFT_PTR; break;
	84	case wxCURSOR_RIGHT_ARROW: gdk_cur = GDK_RIGHT_PTR; break;
	85	case wxCURSOR_HAND: gdk_cur = GDK_HAND2; break;
	86	case wxCURSOR_CROSS: gdk_cur = GDK_CROSSHAIR; break;
	87	case wxCURSOR_SIZEWE: gdk_cur = GDK_SB_H_DOUBLE_ARROW; break;
	88	case wxCURSOR_SIZENS: gdk_cur = GDK_SB_V_DOUBLE_ARROW; break;
	89	case wxCURSOR_ARROWWAIT:
	90	case wxCURSOR_WAIT:
	91	case wxCURSOR_WATCH: gdk_cur = GDK_WATCH; break;
	92	case wxCURSOR_SIZING: gdk_cur = GDK_SIZING; break;
	93	case wxCURSOR_SPRAYCAN: gdk_cur = GDK_SPRAYCAN; break;
	94	case wxCURSOR_IBEAM: gdk_cur = GDK_XTERM; break;
	95	case wxCURSOR_PENCIL: gdk_cur = GDK_PENCIL; break;
	96	case wxCURSOR_NO_ENTRY: gdk_cur = GDK_PIRATE; break;
	97	case wxCURSOR_SIZENWSE:
	98	case wxCURSOR_SIZENESW: gdk_cur = GDK_FLEUR; break;
	99	case wxCURSOR_QUESTION_ARROW: gdk_cur = GDK_QUESTION_ARROW; break;
	100	case wxCURSOR_PAINT_BRUSH: gdk_cur = GDK_SPRAYCAN; break;
	101	case wxCURSOR_MAGNIFIER: gdk_cur = GDK_PLUS; break;
	102	case wxCURSOR_CHAR: gdk_cur = GDK_XTERM; break;
	103	case wxCURSOR_LEFT_BUTTON: gdk_cur = GDK_LEFTBUTTON; break;
	104	case wxCURSOR_MIDDLE_BUTTON: gdk_cur = GDK_MIDDLEBUTTON; break;
	105	case wxCURSOR_RIGHT_BUTTON: gdk_cur = GDK_RIGHTBUTTON; break;
	106	case wxCURSOR_BULLSEYE: gdk_cur = GDK_TARGET; break;
	107
	108	case wxCURSOR_POINT_LEFT: gdk_cur = GDK_SB_LEFT_ARROW; break;
	109	case wxCURSOR_POINT_RIGHT: gdk_cur = GDK_SB_RIGHT_ARROW; break;
	110	/*
	111	case wxCURSOR_DOUBLE_ARROW: gdk_cur = GDK_DOUBLE_ARROW; break;
	112	case wxCURSOR_CROSS_REVERSE: gdk_cur = GDK_CROSS_REVERSE; break;
	113	case wxCURSOR_BASED_ARROW_UP: gdk_cur = GDK_BASED_ARROW_UP; break;
	114	case wxCURSOR_BASED_ARROW_DOWN: gdk_cur = GDK_BASED_ARROW_DOWN; break;
	115	*/
	116
	117	default:
	118	wxFAIL_MSG(wxT("unsupported cursor type"));
	119	// will use the standard one
	120	break;
	121	}
	122
	123	M_CURSORDATA->m_cursor = gdk_cursor_new( gdk_cur );
	124	}
	125
	126
	127	// used in the following two ctors
	128	extern GtkWidget *wxGetRootWindow();
	129
	130	wxCursor::wxCursor(const wxString& cursor_file,
	131	wxBitmapType type,
	132	int hotSpotX, int hotSpotY)
	133	{
	134	/* TODO: test this code! */
	135
	136	// Must be an XBM file
	137	if (type != wxBITMAP_TYPE_XPM) {
	138	wxLogError("Invalid cursor bitmap type '%d'", type);
	139	return;
	140	}
	141
	142	// load the XPM
	143	GdkBitmap *mask = NULL;
	144	GdkBitmap *data = gdk_pixmap_create_from_xpm( wxGetRootWindow()->window,
	145	&mask, NULL, cursor_file.mb_str() );
	146	if (!data)
	147	return;
	148
	149	// check given hotspot
	150	gint w, h;
	151	gdk_drawable_get_size( data, &w, &h );
	152	if (hotSpotX < 0 \|\| hotSpotX >= w)
	153	hotSpotX = 0;
	154	if (hotSpotY < 0 \|\| hotSpotY >= h)
	155	hotSpotY = 0;
	156
	157	// create the real cursor
	158	m_refData = new wxCursorRefData;
	159	M_CURSORDATA->m_cursor =
	160	gdk_cursor_new_from_pixmap( data, mask,
	161	wxBLACK->GetColor(), wxWHITE->GetColor(),
	162	hotSpotX, hotSpotY );
	163
	164	g_object_unref (data);
	165	g_object_unref (mask);
	166	}
	167
	168	wxCursor::wxCursor(const char bits[], int width, int height,
	169	int hotSpotX, int hotSpotY,
	170	const char maskBits[], const wxColour fg, const wxColour bg)
	171	{
	172	if (!maskBits)
	173	maskBits = bits;
	174	if (!fg)
	175	fg = wxBLACK;
	176	if (!bg)
	177	bg = wxWHITE;
	178	if (hotSpotX < 0 \|\| hotSpotX >= width)
	179	hotSpotX = 0;
	180	if (hotSpotY < 0 \|\| hotSpotY >= height)
	181	hotSpotY = 0;
	182
	183	GdkBitmap data = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar ) bits, width, height );
	184	GdkBitmap mask = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar ) maskBits, width, height);
	185
	186	m_refData = new wxCursorRefData;
	187	M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap(
	188	data, mask, fg->GetColor(), bg->GetColor(),
	189	hotSpotX, hotSpotY );
	190
	191	g_object_unref (data);
	192	g_object_unref (mask);
	193	}
	194
	195	#if wxUSE_IMAGE
	196
	197	static void GetHotSpot(const wxImage& image, int& x, int& y)
	198	{
	199	if (image.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_X))
	200	x = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X);
	201	else
	202	x = 0;
	203
	204	if (image.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y))
	205	y = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y);
	206	else
	207	y = 0;
	208
	209	if (x < 0 \|\| x >= image.GetWidth())
	210	x = 0;
	211	if (y < 0 \|\| y >= image.GetHeight())
	212	y = 0;
	213	}
	214
	215	wxCursor::wxCursor( const wxImage & image )
	216	{
	217	int w = image.GetWidth() ;
	218	int h = image.GetHeight();
	219	bool bHasMask = image.HasMask();
	220	int hotSpotX, hotSpotY;
	221	GetHotSpot(image, hotSpotX, hotSpotY);
	222	m_refData = new wxCursorRefData;
	223	wxImage image_copy(image);
	224
	225	GdkDisplay* display = gdk_drawable_get_display(wxGetRootWindow()->window);
	226	if (gdk_display_supports_cursor_color(display))
	227	{
	228	if (!image.HasAlpha())
	229	{
	230	// add alpha, so wxBitmap will convert to pixbuf format
	231	image_copy.InitAlpha();
	232	}
	233	wxBitmap bitmap(image_copy);
	234	wxASSERT(bitmap.HasPixbuf());
	235	M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixbuf
	236	(
	237	display,
	238	bitmap.GetPixbuf(),
	239	hotSpotX, hotSpotY
	240	);
	241	return;
	242	}
	243
	244	unsigned long keyMaskColor = 0;
	245	GdkPixmap* mask;
	246	if (bHasMask)
	247	{
	248	keyMaskColor = wxImageHistogram::MakeKey(
	249	image.GetMaskRed(), image.GetMaskGreen(), image.GetMaskBlue());
	250	// get mask before image is modified
	251	wxBitmap bitmap(image, 1);
	252	mask = bitmap.GetMask()->GetBitmap();
	253	g_object_ref(mask);
	254	}
	255	else
	256	{
	257	const int size = ((w + 7) / 8) * h;
	258	char* bits = new char[size];
	259	memset(bits, 0xff, size);
	260	mask = gdk_bitmap_create_from_data(
	261	wxGetRootWindow()->window, bits, w, h);
	262	delete[] bits;
	263	}
	264
	265	// modify image so wxBitmap can be used to convert to pixmap
	266	image_copy.SetMask(false);
	267	int i, j;
	268	wxByte* data = image_copy.GetData();
	269	for (j = 0; j < h; j++)
	270	{
	271	for (i = 0; i < w; i++, data += 3)
	272	{
	273	//if average value is > mid grey
	274	if (int(data[0]) + data[1] + data[2] >= 3 * 128)
	275	{
	276	// wxBitmap only converts (255,255,255) to white
	277	data[0] = 255;
	278	data[1] = 255;
	279	data[2] = 255;
	280	}
	281	}
	282	}
	283	wxBitmap bitmap(image_copy, 1);
	284
	285	// find the most frequent color(s)
	286	wxImageHistogram histogram;
	287	image.ComputeHistogram(histogram);
	288
	289	long colMostFreq = 0;
	290	unsigned long nMost = 0;
	291	long colNextMostFreq = 0;
	292	unsigned long nNext = 0;
	293	for ( wxImageHistogram::iterator entry = histogram.begin();
	294	entry != histogram.end();
	295	++entry )
	296	{
	297	unsigned long key = entry->first;
	298	if ( !bHasMask \|\| (key != keyMaskColor) )
	299	{
	300	unsigned long value = entry->second.value;
	301	if (value > nMost)
	302	{
	303	nNext = nMost;
	304	colNextMostFreq = colMostFreq;
	305	nMost = value;
	306	colMostFreq = key;
	307	}
	308	else if (value > nNext)
	309	{
	310	nNext = value;
	311	colNextMostFreq = key;
	312	}
	313	}
	314	}
	315
	316	wxColour fg = wxColour ( (unsigned char)(colMostFreq >> 16),
	317	(unsigned char)(colMostFreq >> 8),
	318	(unsigned char)(colMostFreq) );
	319
	320	wxColour bg = wxColour ( (unsigned char)(colNextMostFreq >> 16),
	321	(unsigned char)(colNextMostFreq >> 8),
	322	(unsigned char)(colNextMostFreq) );
	323
	324	int fg_intensity = fg.Red() + fg.Green() + fg.Blue();
	325	int bg_intensity = bg.Red() + bg.Green() + bg.Blue();
	326
	327	if (bg_intensity > fg_intensity)
	328	{
	329	//swap fg and bg
	330	wxColour tmp = fg;
	331	fg = bg;
	332	bg = tmp;
	333	}
	334
	335	M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap
	336	(
	337	bitmap.GetPixmap(),
	338	mask,
	339	fg.GetColor(), bg.GetColor(),
	340	hotSpotX, hotSpotY
	341	);
	342
	343	g_object_unref (mask);
	344	}
	345
	346	#endif // wxUSE_IMAGE
	347
	348	wxCursor::~wxCursor()
	349	{
	350	}
	351
	352	GdkCursor *wxCursor::GetCursor() const
	353	{
	354	return M_CURSORDATA->m_cursor;
	355	}
	356
	357	wxGDIRefData *wxCursor::CreateGDIRefData() const
	358	{
	359	return new wxCursorRefData;
	360	}
	361
	362	wxGDIRefData wxCursor::CloneGDIRefData(const wxGDIRefData data) const
	363	{
	364	return new wxCursorRefData(static_cast<const wxCursorRefData >(data));
	365	}
	366
	367	//-----------------------------------------------------------------------------
	368	// busy cursor routines
	369	//-----------------------------------------------------------------------------
	370
	371	/* Current cursor, in order to hang on to
	372	* cursor handle when setting the cursor globally */
	373	wxCursor g_globalCursor;
	374
	375	static wxCursor gs_savedCursor;
	376	static int gs_busyCount = 0;
	377
	378	const wxCursor &wxBusyCursor::GetStoredCursor()
	379	{
	380	return gs_savedCursor;
	381	}
	382
	383	const wxCursor wxBusyCursor::GetBusyCursor()
	384	{
	385	return wxCursor(wxCURSOR_WATCH);
	386	}
	387
	388	static void InternalIdle(const wxWindowList& list, GdkDisplay*& display)
	389	{
	390	wxWindowList::const_iterator i = list.begin();
	391	for (size_t n = list.size(); n--; ++i)
	392	{
	393	wxWindow* win = *i;
	394	if (display == NULL && win->m_widget && win->m_widget->window)
	395	display = gdk_drawable_get_display(win->m_widget->window);
	396	win->OnInternalIdle();
	397	InternalIdle(win->GetChildren(), display);
	398	}
	399	}
	400
	401	void wxEndBusyCursor()
	402	{
	403	if (--gs_busyCount > 0)
	404	return;
	405
	406	g_globalCursor = gs_savedCursor;
	407	gs_savedCursor = wxNullCursor;
	408	GdkDisplay* unused = NULL;
	409	InternalIdle(wxTopLevelWindows, unused);
	410	}
	411
	412	void wxBeginBusyCursor(const wxCursor* cursor)
	413	{
	414	if (gs_busyCount++ > 0)
	415	return;
	416
	417	wxASSERT_MSG( !gs_savedCursor.Ok(),
	418	wxT("forgot to call wxEndBusyCursor, will leak memory") );
	419
	420	gs_savedCursor = g_globalCursor;
	421	g_globalCursor = *cursor;
	422	GdkDisplay* display = NULL;
	423	InternalIdle(wxTopLevelWindows, display);
	424	if (display)
	425	gdk_display_flush(display);
	426	}
	427
	428	bool wxIsBusy()
	429	{
	430	return gs_busyCount > 0;
	431	}
	432
	433	void wxSetCursor( const wxCursor& cursor )
	434	{
	435	g_globalCursor = cursor;
	436	wxTheApp->WakeUpIdle();
	437	}