src/gtk/cursor.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        src/gtk/cursor.cpp
// Purpose:     wxCursor implementation
// 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>

//-----------------------------------------------------------------------------
// wxCursorRefData
//-----------------------------------------------------------------------------

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

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

    GdkCursor *m_cursor;
};

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

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


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

#define M_CURSORDATA static_cast<wxCursorRefData*>(m_refData)

IMPLEMENT_DYNAMIC_CLASS(wxCursor, wxGDIObject)

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


wxCursor::wxCursor()
{
}

#if wxUSE_IMAGE
wxCursor::wxCursor(const wxString& cursor_file,
                   wxBitmapType type,
                   int hotSpotX, int hotSpotY)
{
    wxImage img;
    if (!img.LoadFile(cursor_file, type))
        return;

    // eventually set the hotspot:
    if (!img.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_X))
        img.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, hotSpotX);
    if (!img.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y))
        img.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, hotSpotY);

    InitFromImage(img);
}

wxCursor::wxCursor(const wxImage& img)
{
    InitFromImage(img);
}
#endif

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);
}

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 );
}

#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;
}

void wxCursor::InitFromImage( 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

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