src/gtk/settings.cpp

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


#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "settings.h"
#endif

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

#include "wx/settings.h"
#include "wx/debug.h"
#include "wx/cmndata.h"
#include "wx/fontutil.h"

#include <gdk/gdk.h>
#include <gdk/gdkprivate.h>
#include <gtk/gtk.h>

#define SHIFT (8*(sizeof(short int)-sizeof(char)))

// ----------------------------------------------------------------------------
// wxSystemObjects
// ----------------------------------------------------------------------------

struct wxSystemObjects
{
    wxColour m_colBtnFace,
             m_colBtnShadow,
             m_colBtnHighlight,
             m_colHighlight,
             m_colHighlightText,
             m_colListBox,
             m_colBtnText,
             m_colMenuItemHighlight;

    wxFont m_fontSystem;
};

static wxSystemObjects gs_objects;

// ----------------------------------------------------------------------------
// wxSystemSettings implementation
// ----------------------------------------------------------------------------

// kind of widget to use in GetColourFromGTKWidget
enum wxGtkWidgetType
{
    wxGTK_BUTTON,
    wxGTK_LIST,
    wxGTK_MENUITEM
};

// the colour we need
enum wxGtkColourType
{
    wxGTK_FG,
    wxGTK_BG,
    wxGTK_BASE
};

// wxSystemSettings::GetColour() helper: get the colours from a GTK+
// widget style, return true if we did get them, false to use defaults
static bool GetColourFromGTKWidget(int& red, int& green, int& blue,
                                   wxGtkWidgetType type = wxGTK_BUTTON,
                                   GtkStateType state = GTK_STATE_NORMAL,
                                   wxGtkColourType colour = wxGTK_BG)
{
    GtkWidget *widget;
    switch ( type )
    {
        default:
            wxFAIL_MSG( _T("unexpected GTK widget type") );
            // fall through

        case wxGTK_BUTTON:
            widget = gtk_button_new();
            break;

        case wxGTK_LIST:
            widget = gtk_list_new();

        case wxGTK_MENUITEM:
            widget = gtk_menu_item_new();
    }

    GtkStyle *def = gtk_rc_get_style( widget );
    if ( !def )
        def = gtk_widget_get_default_style();

    bool ok;
    if ( def )
    {
        GdkColor *col;
        switch ( colour )
        {
            default:
                wxFAIL_MSG( _T("unexpected GTK colour type") );
                // fall through

            case wxGTK_FG:
                col = def->fg;
                break;

            case wxGTK_BG:
                col = def->bg;
                break;

            case wxGTK_BASE:
                col = def->base;
                break;
        }

        red = col[state].red;
        green = col[state].green;
        blue = col[state].blue;

        ok = TRUE;
    }
    else
    {
        ok = FALSE;
    }

    gtk_widget_destroy( widget );

    return ok;
}

wxColour wxSystemSettingsNative::GetColour( wxSystemColour index )
{
    switch (index)
    {
        case wxSYS_COLOUR_SCROLLBAR:
        case wxSYS_COLOUR_BACKGROUND:
        case wxSYS_COLOUR_INACTIVECAPTION:
        case wxSYS_COLOUR_MENU:
        case wxSYS_COLOUR_WINDOWFRAME:
        case wxSYS_COLOUR_ACTIVEBORDER:
        case wxSYS_COLOUR_INACTIVEBORDER:
        case wxSYS_COLOUR_BTNFACE:
        case wxSYS_COLOUR_MENUBAR:
        case wxSYS_COLOUR_3DLIGHT:
            if (!gs_objects.m_colBtnFace.Ok())
            {
                int red, green, blue;
                if ( !GetColourFromGTKWidget(red, green, blue) )
                {
                    red =
                    green = 0;
                    blue = 0x9c40;
                }

                gs_objects.m_colBtnFace = wxColour( red   >> SHIFT,
                                                   green >> SHIFT,
                                                   blue  >> SHIFT );
            }
            return gs_objects.m_colBtnFace;

        case wxSYS_COLOUR_WINDOW:
            return *wxWHITE;

        case wxSYS_COLOUR_3DDKSHADOW:
            return *wxBLACK;

        case wxSYS_COLOUR_GRAYTEXT:
        case wxSYS_COLOUR_BTNSHADOW:
        //case wxSYS_COLOUR_3DSHADOW:
            if (!gs_objects.m_colBtnShadow.Ok())
            {
                wxColour faceColour(GetColour(wxSYS_COLOUR_3DFACE));
                gs_objects.m_colBtnShadow =
                   wxColour((unsigned char) (faceColour.Red() * 0.666),
                            (unsigned char) (faceColour.Green() * 0.666),
                            (unsigned char) (faceColour.Blue() * 0.666));
            }

            return gs_objects.m_colBtnShadow;

        case wxSYS_COLOUR_3DHIGHLIGHT:
        //case wxSYS_COLOUR_BTNHIGHLIGHT:
            return * wxWHITE;

        case wxSYS_COLOUR_HIGHLIGHT:
            if (!gs_objects.m_colHighlight.Ok())
            {
                int red, green, blue;
                if ( !GetColourFromGTKWidget(red, green, blue,
                                             wxGTK_BUTTON,
                                             GTK_STATE_SELECTED) )
                {
                    red =
                    green = 0;
                    blue = 0x9c40;
                }

                gs_objects.m_colHighlight = wxColour( red   >> SHIFT,
                                                        green >> SHIFT,
                                                        blue  >> SHIFT );
            }
            return gs_objects.m_colHighlight;

        case wxSYS_COLOUR_LISTBOX:
            if (!gs_objects.m_colListBox.Ok())
            {
                int red, green, blue;
                if ( GetColourFromGTKWidget(red, green, blue,
                                            wxGTK_LIST,
                                            GTK_STATE_NORMAL,
                                            wxGTK_BASE) )
                {
                    gs_objects.m_colListBox = wxColour( red   >> SHIFT,
                                                          green >> SHIFT,
                                                          blue  >> SHIFT );
                }
                else
                {
                    gs_objects.m_colListBox = wxColour(*wxWHITE);
                }
            }
            return gs_objects.m_colListBox;

        case wxSYS_COLOUR_MENUTEXT:
        case wxSYS_COLOUR_WINDOWTEXT:
        case wxSYS_COLOUR_CAPTIONTEXT:
        case wxSYS_COLOUR_INACTIVECAPTIONTEXT:
        case wxSYS_COLOUR_BTNTEXT:
        case wxSYS_COLOUR_INFOTEXT:
            if (!gs_objects.m_colBtnText.Ok())
            {
                int red, green, blue;
                if ( !GetColourFromGTKWidget(red, green, blue,
                                             wxGTK_BUTTON,
                                             GTK_STATE_NORMAL,
                                             wxGTK_FG) )
                {
                    red =
                    green =
                    blue = 0;
                }

                gs_objects.m_colBtnText = wxColour( red   >> SHIFT,
                                                      green >> SHIFT,
                                                      blue  >> SHIFT );
            }
            return gs_objects.m_colBtnText;

            // this (as well as wxSYS_COLOUR_INFOTEXT above) is used for
            // tooltip windows - Robert, please change this code to use the
            // real GTK tooltips when/if you can (TODO)
        case wxSYS_COLOUR_INFOBK:
            return wxColour(255, 255, 225);

        case wxSYS_COLOUR_HIGHLIGHTTEXT:
            if (!gs_objects.m_colHighlightText.Ok())
            {
                wxColour hclr = GetColour(wxSYS_COLOUR_HIGHLIGHT);
                if (hclr.Red() > 200 && hclr.Green() > 200 && hclr.Blue() > 200)
                    gs_objects.m_colHighlightText = wxColour(*wxBLACK);
                else
                    gs_objects.m_colHighlightText = wxColour(*wxWHITE);
            }
            return gs_objects.m_colHighlightText;

        case wxSYS_COLOUR_APPWORKSPACE:
            return *wxWHITE;    // ?

        case wxSYS_COLOUR_ACTIVECAPTION:
        case wxSYS_COLOUR_MENUHILIGHT:
            if (!gs_objects.m_colMenuItemHighlight.Ok())
            {
                int red, green, blue;
                if ( !GetColourFromGTKWidget(red, green, blue,
                                             wxGTK_MENUITEM,
                                             GTK_STATE_SELECTED,
                                             wxGTK_BG) )
                {
                    red =
                    green =
                    blue = 0;
                }

                gs_objects.m_colMenuItemHighlight = wxColour( red  >> SHIFT,
                                                              green >> SHIFT,
                                                              blue  >> SHIFT );
            }
            return gs_objects.m_colMenuItemHighlight;

        case wxSYS_COLOUR_HOTLIGHT:
        case wxSYS_COLOUR_GRADIENTACTIVECAPTION:
        case wxSYS_COLOUR_GRADIENTINACTIVECAPTION:
            // TODO
            return *wxBLACK;

        case wxSYS_COLOUR_MAX:
        default:
            wxFAIL_MSG( _T("unknown system colour index") );
  }

  return *wxWHITE;
}

wxFont wxSystemSettingsNative::GetFont( wxSystemFont index )
{
    switch (index)
    {
        case wxSYS_OEM_FIXED_FONT:
        case wxSYS_ANSI_FIXED_FONT:
        case wxSYS_SYSTEM_FIXED_FONT:
        {
            return *wxNORMAL_FONT;
        }
        case wxSYS_ANSI_VAR_FONT:
        case wxSYS_SYSTEM_FONT:
        case wxSYS_DEVICE_DEFAULT_FONT:
        case wxSYS_DEFAULT_GUI_FONT:
        {
            if (!gs_objects.m_fontSystem.Ok())
            {
#ifdef __WXGTK20__
                GtkWidget *widget = gtk_button_new();
                GtkStyle *def = gtk_rc_get_style( widget );
                if ( !def || !def->font_desc )
                    def = gtk_widget_get_default_style();
                if ( def && def->font_desc )
                {
                    wxNativeFontInfo info;
                    info.description =
                        pango_font_description_copy(def->font_desc);
                    gs_objects.m_fontSystem = wxFont(info);
                }
                else
                {
                    GtkSettings *settings = gtk_settings_get_default();
                    gchar *font_name = NULL;
                    g_object_get ( settings,
                                   "gtk-font-name",
                                   &font_name,
                                   NULL);
                    if (!font_name)
                        gs_objects.m_fontSystem = wxFont( 12, wxSWISS, wxNORMAL, wxNORMAL );
                    else
                        gs_objects.m_fontSystem = wxFont(wxString::FromAscii(font_name));
                    g_free (font_name);
                }
                gtk_widget_destroy( widget );
#else
                gs_objects.m_fontSystem = wxFont( 12, wxSWISS, wxNORMAL, wxNORMAL );
#endif
            }
            return gs_objects.m_fontSystem;
        }

        default:
            return wxNullFont;
    }
}

int wxSystemSettingsNative::GetMetric( wxSystemMetric index )
{
    switch (index)
    {
        case wxSYS_SCREEN_X:   return gdk_screen_width();
        case wxSYS_SCREEN_Y:   return gdk_screen_height();
        case wxSYS_HSCROLL_Y:  return 15;
        case wxSYS_VSCROLL_X:  return 15;

#if defined(__WXGTK20__) && GTK_CHECK_VERSION(2, 4, 0)
        case wxSYS_DCLICK_X:
        case wxSYS_DCLICK_Y:
            gint dclick_distance;
            g_object_get(gtk_settings_get_default(), "gtk-double-click-distance", &dclick_distance, NULL);
            return dclick_distance * 2;
#endif

#if defined(__WXGTK20__)
        case wxSYS_DRAG_X:
        case wxSYS_DRAG_Y:
            gint drag_threshold;
            g_object_get(gtk_settings_get_default(), "gtk-dnd-drag-threshold", &drag_threshold, NULL);
            return drag_threshold * 2;
#endif

        // VZ: is there any way to get the cursor size with GDK?
        // Mart Raudsepp: Yes, there is a way to get the default cursor size for a display ever since GDK 2.4
#if defined(__WXGTK20__) && GTK_CHECK_VERSION(2, 4, 0)
        case wxSYS_CURSOR_X:
        case wxSYS_CURSOR_Y:
            return gdk_display_get_default_cursor_size(gdk_display_get_default());
#else
        case wxSYS_CURSOR_X:   return 16;
        case wxSYS_CURSOR_Y:   return 16;
#endif
        // MBN: ditto for icons
        case wxSYS_ICON_X:     return 32;
        case wxSYS_ICON_Y:     return 32;
        default:
            return -1;   // metric is unknown
    }
}

bool wxSystemSettingsNative::HasFeature(wxSystemFeature index)
{
    switch (index)
    {
        case wxSYS_CAN_ICONIZE_FRAME:
            return FALSE;
            break;
        case wxSYS_CAN_DRAW_FRAME_DECORATIONS:
            return TRUE;
            break;
        default:
            return FALSE;
    }
}
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: gtk/settings.cpp
	3	// Purpose:
	4	// Author: Robert Roebling
	5	// Id: $Id$
	6	// Copyright: (c) 1998 Robert Roebling
	7	// Licence: wxWindows licence
	8	/////////////////////////////////////////////////////////////////////////////
	9
	10
	11	#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
	12	#pragma implementation "settings.h"
	13	#endif
	14
	15	// For compilers that support precompilation, includes "wx.h".
	16	#include "wx/wxprec.h"
	17
	18	#include "wx/settings.h"
	19	#include "wx/debug.h"
	20	#include "wx/cmndata.h"
	21	#include "wx/fontutil.h"
	22
	23	#include <gdk/gdk.h>
	24	#include <gdk/gdkprivate.h>
	25	#include <gtk/gtk.h>
	26
	27	#define SHIFT (8*(sizeof(short int)-sizeof(char)))
	28
	29	// ----------------------------------------------------------------------------
	30	// wxSystemObjects
	31	// ----------------------------------------------------------------------------
	32
	33	struct wxSystemObjects
	34	{
	35	wxColour m_colBtnFace,
	36	m_colBtnShadow,
	37	m_colBtnHighlight,
	38	m_colHighlight,
	39	m_colHighlightText,
	40	m_colListBox,
	41	m_colBtnText,
	42	m_colMenuItemHighlight;
	43
	44	wxFont m_fontSystem;
	45	};
	46
	47	static wxSystemObjects gs_objects;
	48
	49	// ----------------------------------------------------------------------------
	50	// wxSystemSettings implementation
	51	// ----------------------------------------------------------------------------
	52
	53	// kind of widget to use in GetColourFromGTKWidget
	54	enum wxGtkWidgetType
	55	{
	56	wxGTK_BUTTON,
	57	wxGTK_LIST,
	58	wxGTK_MENUITEM
	59	};
	60
	61	// the colour we need
	62	enum wxGtkColourType
	63	{
	64	wxGTK_FG,
	65	wxGTK_BG,
	66	wxGTK_BASE
	67	};
	68
	69	// wxSystemSettings::GetColour() helper: get the colours from a GTK+
	70	// widget style, return true if we did get them, false to use defaults
	71	static bool GetColourFromGTKWidget(int& red, int& green, int& blue,
	72	wxGtkWidgetType type = wxGTK_BUTTON,
	73	GtkStateType state = GTK_STATE_NORMAL,
	74	wxGtkColourType colour = wxGTK_BG)
	75	{
	76	GtkWidget *widget;
	77	switch ( type )
	78	{
	79	default:
	80	wxFAIL_MSG( _T("unexpected GTK widget type") );
	81	// fall through
	82
	83	case wxGTK_BUTTON:
	84	widget = gtk_button_new();
	85	break;
	86
	87	case wxGTK_LIST:
	88	widget = gtk_list_new();
	89
	90	case wxGTK_MENUITEM:
	91	widget = gtk_menu_item_new();
	92	}
	93
	94	GtkStyle *def = gtk_rc_get_style( widget );
	95	if ( !def )
	96	def = gtk_widget_get_default_style();
	97
	98	bool ok;
	99	if ( def )
	100	{
	101	GdkColor *col;
	102	switch ( colour )
	103	{
	104	default:
	105	wxFAIL_MSG( _T("unexpected GTK colour type") );
	106	// fall through
	107
	108	case wxGTK_FG:
	109	col = def->fg;
	110	break;
	111
	112	case wxGTK_BG:
	113	col = def->bg;
	114	break;
	115
	116	case wxGTK_BASE:
	117	col = def->base;
	118	break;
	119	}
	120
	121	red = col[state].red;
	122	green = col[state].green;
	123	blue = col[state].blue;
	124
	125	ok = TRUE;
	126	}
	127	else
	128	{
	129	ok = FALSE;
	130	}
	131
	132	gtk_widget_destroy( widget );
	133
	134	return ok;
	135	}
	136
	137	wxColour wxSystemSettingsNative::GetColour( wxSystemColour index )
	138	{
	139	switch (index)
	140	{
	141	case wxSYS_COLOUR_SCROLLBAR:
	142	case wxSYS_COLOUR_BACKGROUND:
	143	case wxSYS_COLOUR_INACTIVECAPTION:
	144	case wxSYS_COLOUR_MENU:
	145	case wxSYS_COLOUR_WINDOWFRAME:
	146	case wxSYS_COLOUR_ACTIVEBORDER:
	147	case wxSYS_COLOUR_INACTIVEBORDER:
	148	case wxSYS_COLOUR_BTNFACE:
	149	case wxSYS_COLOUR_MENUBAR:
	150	case wxSYS_COLOUR_3DLIGHT:
	151	if (!gs_objects.m_colBtnFace.Ok())
	152	{
	153	int red, green, blue;
	154	if ( !GetColourFromGTKWidget(red, green, blue) )
	155	{
	156	red =
	157	green = 0;
	158	blue = 0x9c40;
	159	}
	160
	161	gs_objects.m_colBtnFace = wxColour( red >> SHIFT,
	162	green >> SHIFT,
	163	blue >> SHIFT );
	164	}
	165	return gs_objects.m_colBtnFace;
	166
	167	case wxSYS_COLOUR_WINDOW:
	168	return *wxWHITE;
	169
	170	case wxSYS_COLOUR_3DDKSHADOW:
	171	return *wxBLACK;
	172
	173	case wxSYS_COLOUR_GRAYTEXT:
	174	case wxSYS_COLOUR_BTNSHADOW:
	175	//case wxSYS_COLOUR_3DSHADOW:
	176	if (!gs_objects.m_colBtnShadow.Ok())
	177	{
	178	wxColour faceColour(GetColour(wxSYS_COLOUR_3DFACE));
	179	gs_objects.m_colBtnShadow =
	180	wxColour((unsigned char) (faceColour.Red() * 0.666),
	181	(unsigned char) (faceColour.Green() * 0.666),
	182	(unsigned char) (faceColour.Blue() * 0.666));
	183	}
	184
	185	return gs_objects.m_colBtnShadow;
	186
	187	case wxSYS_COLOUR_3DHIGHLIGHT:
	188	//case wxSYS_COLOUR_BTNHIGHLIGHT:
	189	return * wxWHITE;
	190
	191	case wxSYS_COLOUR_HIGHLIGHT:
	192	if (!gs_objects.m_colHighlight.Ok())
	193	{
	194	int red, green, blue;
	195	if ( !GetColourFromGTKWidget(red, green, blue,
	196	wxGTK_BUTTON,
	197	GTK_STATE_SELECTED) )
	198	{
	199	red =
	200	green = 0;
	201	blue = 0x9c40;
	202	}
	203
	204	gs_objects.m_colHighlight = wxColour( red >> SHIFT,
	205	green >> SHIFT,
	206	blue >> SHIFT );
	207	}
	208	return gs_objects.m_colHighlight;
	209
	210	case wxSYS_COLOUR_LISTBOX:
	211	if (!gs_objects.m_colListBox.Ok())
	212	{
	213	int red, green, blue;
	214	if ( GetColourFromGTKWidget(red, green, blue,
	215	wxGTK_LIST,
	216	GTK_STATE_NORMAL,
	217	wxGTK_BASE) )
	218	{
	219	gs_objects.m_colListBox = wxColour( red >> SHIFT,
	220	green >> SHIFT,
	221	blue >> SHIFT );
	222	}
	223	else
	224	{
	225	gs_objects.m_colListBox = wxColour(*wxWHITE);
	226	}
	227	}
	228	return gs_objects.m_colListBox;
	229
	230	case wxSYS_COLOUR_MENUTEXT:
	231	case wxSYS_COLOUR_WINDOWTEXT:
	232	case wxSYS_COLOUR_CAPTIONTEXT:
	233	case wxSYS_COLOUR_INACTIVECAPTIONTEXT:
	234	case wxSYS_COLOUR_BTNTEXT:
	235	case wxSYS_COLOUR_INFOTEXT:
	236	if (!gs_objects.m_colBtnText.Ok())
	237	{
	238	int red, green, blue;
	239	if ( !GetColourFromGTKWidget(red, green, blue,
	240	wxGTK_BUTTON,
	241	GTK_STATE_NORMAL,
	242	wxGTK_FG) )
	243	{
	244	red =
	245	green =
	246	blue = 0;
	247	}
	248
	249	gs_objects.m_colBtnText = wxColour( red >> SHIFT,
	250	green >> SHIFT,
	251	blue >> SHIFT );
	252	}
	253	return gs_objects.m_colBtnText;
	254
	255	// this (as well as wxSYS_COLOUR_INFOTEXT above) is used for
	256	// tooltip windows - Robert, please change this code to use the
	257	// real GTK tooltips when/if you can (TODO)
	258	case wxSYS_COLOUR_INFOBK:
	259	return wxColour(255, 255, 225);
	260
	261	case wxSYS_COLOUR_HIGHLIGHTTEXT:
	262	if (!gs_objects.m_colHighlightText.Ok())
	263	{
	264	wxColour hclr = GetColour(wxSYS_COLOUR_HIGHLIGHT);
	265	if (hclr.Red() > 200 && hclr.Green() > 200 && hclr.Blue() > 200)
	266	gs_objects.m_colHighlightText = wxColour(*wxBLACK);
	267	else
	268	gs_objects.m_colHighlightText = wxColour(*wxWHITE);
	269	}
	270	return gs_objects.m_colHighlightText;
	271
	272	case wxSYS_COLOUR_APPWORKSPACE:
	273	return *wxWHITE; // ?
	274
	275	case wxSYS_COLOUR_ACTIVECAPTION:
	276	case wxSYS_COLOUR_MENUHILIGHT:
	277	if (!gs_objects.m_colMenuItemHighlight.Ok())
	278	{
	279	int red, green, blue;
	280	if ( !GetColourFromGTKWidget(red, green, blue,
	281	wxGTK_MENUITEM,
	282	GTK_STATE_SELECTED,
	283	wxGTK_BG) )
	284	{
	285	red =
	286	green =
	287	blue = 0;
	288	}
	289
	290	gs_objects.m_colMenuItemHighlight = wxColour( red >> SHIFT,
	291	green >> SHIFT,
	292	blue >> SHIFT );
	293	}
	294	return gs_objects.m_colMenuItemHighlight;
	295
	296	case wxSYS_COLOUR_HOTLIGHT:
	297	case wxSYS_COLOUR_GRADIENTACTIVECAPTION:
	298	case wxSYS_COLOUR_GRADIENTINACTIVECAPTION:
	299	// TODO
	300	return *wxBLACK;
	301
	302	case wxSYS_COLOUR_MAX:
	303	default:
	304	wxFAIL_MSG( _T("unknown system colour index") );
	305	}
	306
	307	return *wxWHITE;
	308	}
	309
	310	wxFont wxSystemSettingsNative::GetFont( wxSystemFont index )
	311	{
	312	switch (index)
	313	{
	314	case wxSYS_OEM_FIXED_FONT:
	315	case wxSYS_ANSI_FIXED_FONT:
	316	case wxSYS_SYSTEM_FIXED_FONT:
	317	{
	318	return *wxNORMAL_FONT;
	319	}
	320	case wxSYS_ANSI_VAR_FONT:
	321	case wxSYS_SYSTEM_FONT:
	322	case wxSYS_DEVICE_DEFAULT_FONT:
	323	case wxSYS_DEFAULT_GUI_FONT:
	324	{
	325	if (!gs_objects.m_fontSystem.Ok())
	326	{
	327	#ifdef __WXGTK20__
	328	GtkWidget *widget = gtk_button_new();
	329	GtkStyle *def = gtk_rc_get_style( widget );
	330	if ( !def \|\| !def->font_desc )
	331	def = gtk_widget_get_default_style();
	332	if ( def && def->font_desc )
	333	{
	334	wxNativeFontInfo info;
	335	info.description =
	336	pango_font_description_copy(def->font_desc);
	337	gs_objects.m_fontSystem = wxFont(info);
	338	}
	339	else
	340	{
	341	GtkSettings *settings = gtk_settings_get_default();
	342	gchar *font_name = NULL;
	343	g_object_get ( settings,
	344	"gtk-font-name",
	345	&font_name,
	346	NULL);
	347	if (!font_name)
	348	gs_objects.m_fontSystem = wxFont( 12, wxSWISS, wxNORMAL, wxNORMAL );
	349	else
	350	gs_objects.m_fontSystem = wxFont(wxString::FromAscii(font_name));
	351	g_free (font_name);
	352	}
	353	gtk_widget_destroy( widget );
	354	#else
	355	gs_objects.m_fontSystem = wxFont( 12, wxSWISS, wxNORMAL, wxNORMAL );
	356	#endif
	357	}
	358	return gs_objects.m_fontSystem;
	359	}
	360
	361	default:
	362	return wxNullFont;
	363	}
	364	}
	365
	366	int wxSystemSettingsNative::GetMetric( wxSystemMetric index )
	367	{
	368	switch (index)
	369	{
	370	case wxSYS_SCREEN_X: return gdk_screen_width();
	371	case wxSYS_SCREEN_Y: return gdk_screen_height();
	372	case wxSYS_HSCROLL_Y: return 15;
	373	case wxSYS_VSCROLL_X: return 15;
	374
	375	#if defined(__WXGTK20__) && GTK_CHECK_VERSION(2, 4, 0)
	376	case wxSYS_DCLICK_X:
	377	case wxSYS_DCLICK_Y:
	378	gint dclick_distance;
	379	g_object_get(gtk_settings_get_default(), "gtk-double-click-distance", &dclick_distance, NULL);
	380	return dclick_distance * 2;
	381	#endif
	382
	383	#if defined(__WXGTK20__)
	384	case wxSYS_DRAG_X:
	385	case wxSYS_DRAG_Y:
	386	gint drag_threshold;
	387	g_object_get(gtk_settings_get_default(), "gtk-dnd-drag-threshold", &drag_threshold, NULL);
	388	return drag_threshold * 2;
	389	#endif
	390
	391	// VZ: is there any way to get the cursor size with GDK?
	392	// Mart Raudsepp: Yes, there is a way to get the default cursor size for a display ever since GDK 2.4
	393	#if defined(__WXGTK20__) && GTK_CHECK_VERSION(2, 4, 0)
	394	case wxSYS_CURSOR_X:
	395	case wxSYS_CURSOR_Y:
	396	return gdk_display_get_default_cursor_size(gdk_display_get_default());
	397	#else
	398	case wxSYS_CURSOR_X: return 16;
	399	case wxSYS_CURSOR_Y: return 16;
	400	#endif
	401	// MBN: ditto for icons
	402	case wxSYS_ICON_X: return 32;
	403	case wxSYS_ICON_Y: return 32;
	404	default:
	405	return -1; // metric is unknown
	406	}
	407	}
	408
	409	bool wxSystemSettingsNative::HasFeature(wxSystemFeature index)
	410	{
	411	switch (index)
	412	{
	413	case wxSYS_CAN_ICONIZE_FRAME:
	414	return FALSE;
	415	break;
	416	case wxSYS_CAN_DRAW_FRAME_DECORATIONS:
	417	return TRUE;
	418	break;
	419	default:
	420	return FALSE;
	421	}
	422	}