src/gtk1/settings.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        src/gtk1/settings.cpp
// Purpose:
// Author:      Robert Roebling
// Modified by: Mart Raudsepp (GetMetric)
// Copyright:   (c) 1998 Robert Roebling
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

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

#include "wx/settings.h"

#ifndef WX_PRECOMP
    #include "wx/toplevel.h"
#endif

#include "wx/fontutil.h"

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

#include <X11/Xatom.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,
             m_colTooltip,
             m_colTooltipText;

    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( wxT("unexpected GTK widget type") );
            // fall through

        case wxGTK_BUTTON:
            widget = gtk_button_new();
            break;

        case wxGTK_LIST:
            widget = gtk_list_new();
            break;

        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( wxT("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;
}

static void GetTooltipColors()
{
    GtkTooltips* tooltips = gtk_tooltips_new();
    gtk_tooltips_force_window(tooltips);
    gtk_widget_ensure_style(tooltips->tip_window);
    GdkColor c = tooltips->tip_window->style->bg[GTK_STATE_NORMAL];
    gs_objects.m_colTooltip = wxColor(c.red >> SHIFT, c.green >> SHIFT, c.blue >> SHIFT);
    c = tooltips->tip_window->style->fg[GTK_STATE_NORMAL];
    gs_objects.m_colTooltipText = wxColor(c.red >> SHIFT, c.green >> SHIFT, c.blue >> SHIFT);
    gtk_object_sink(reinterpret_cast<GtkObject*>(tooltips));
}

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.IsOk())
            {
                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.IsOk())
            {
                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.IsOk())
            {
                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.IsOk())
            {
                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_LISTBOXTEXT:
            if (!gs_objects.m_colBtnText.IsOk())
            {
                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;

        case wxSYS_COLOUR_INFOBK:
            if (!gs_objects.m_colTooltip.IsOk()) {
                GetTooltipColors();
            }
            return gs_objects.m_colTooltip;

        case wxSYS_COLOUR_INFOTEXT:
            if (!gs_objects.m_colTooltipText.IsOk()) {
                GetTooltipColors();
            }
            return gs_objects.m_colTooltipText;

        case wxSYS_COLOUR_LISTBOXHIGHLIGHTTEXT:
        case wxSYS_COLOUR_HIGHLIGHTTEXT:
            if (!gs_objects.m_colHighlightText.IsOk())
            {
                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.IsOk())
            {
                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( wxT("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.IsOk())
            {
                gs_objects.m_fontSystem = wxFont( 12, wxSWISS, wxNORMAL, wxNORMAL );
            }
            return gs_objects.m_fontSystem;
        }

        default:
            return wxNullFont;
    }
}

int
wxSystemSettingsNative::GetMetric(wxSystemMetric index, wxWindow* WXUNUSED(win))
{
    switch (index)
    {
        case wxSYS_CURSOR_X:
        case wxSYS_CURSOR_Y:
            return 16;

        // MBN: ditto for icons
        case wxSYS_ICON_X:     return 32;
        case wxSYS_ICON_Y:     return 32;

        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;

// a gtk1 implementation should be possible too if gtk2 efficiency/convenience functions aren't used
#if 0
        case wxSYS_CAPTION_Y:
            if (!window)
                // No realized window specified, and no implementation for that case yet.
                return -1;

            // Check if wm supports frame extents - we can't know the caption height if it does not.
#if GTK_CHECK_VERSION(2,2,0)
            if (!gtk_check_version(2,2,0))
            {
                if (!gdk_x11_screen_supports_net_wm_hint(
                        gdk_drawable_get_screen(window),
                        gdk_atom_intern("_NET_FRAME_EXTENTS", false) ) )
                    return -1;
            }
            else
#endif
            {
                if (!gdk_net_wm_supports(gdk_atom_intern("_NET_FRAME_EXTENTS", false)))
                    return -1;
            }

            wxASSERT_MSG( wxDynamicCast(win, wxTopLevelWindow),
                          wxT("Asking for caption height of a non toplevel window") );

            // Get the height of the top windowmanager border.
            // This is the titlebar in most cases. The titlebar might be elsewhere, and
            // we could check which is the thickest wm border to decide on which side the
            // titlebar is, but this might lead to interesting behaviours in used code.
            // Reconsider when we have a way to report to the user on which side it is.

            Atom type;
            gint format;
            gulong nitems;

#if GTK_CHECK_VERSION(2,2,0)
            if (!gtk_check_version(2,2,0))
            {
                gulong bytes_after;
                success = (XGetWindowProperty (GDK_DISPLAY_XDISPLAY(gdk_drawable_get_display(window)),
                                    GDK_WINDOW_XWINDOW(window),
                                    gdk_x11_get_xatom_by_name_for_display (
                                            gdk_drawable_get_display(window),
                                            "_NET_FRAME_EXTENTS" ),
                                    0, // left, right, top, bottom, CARDINAL[4]/32
                                    G_MAXLONG, // size of long
                                    false, // do not delete property
                                    XA_CARDINAL, // 32 bit
                                    &type, &format, &nitems, &bytes_after, &data
                                   ) == Success);
            }
#endif
            if (success)
            {
                int caption_height = -1;

                if ((type == XA_CARDINAL) && (format == 32) && (nitems >= 3) && (data))
                {
                    long *borders;
                    borders = (long*)data;
                    caption_height = borders[2]; // top frame extent
                }

                if (data)
                    XFree(data);

                return caption_height;
            }

            // Try a default approach without a window pointer, if possible
            // ...

            return -1;
#endif // gtk2

        case wxSYS_PENWINDOWS_PRESENT:
            // No MS Windows for Pen computing extension available in X11 based gtk+.
            return 0;

        default:
            return -1;   // metric is unknown
    }
}

bool wxSystemSettingsNative::HasFeature(wxSystemFeature index)
{
    switch (index)
    {
        case wxSYS_CAN_ICONIZE_FRAME:
            return false;

        case wxSYS_CAN_DRAW_FRAME_DECORATIONS:
            return true;

        default:
            return false;
    }
}
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: src/gtk1/settings.cpp
	3	// Purpose:
	4	// Author: Robert Roebling
	5	// Modified by: Mart Raudsepp (GetMetric)
	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/settings.h"
	14
	15	#ifndef WX_PRECOMP
	16	#include "wx/toplevel.h"
	17	#endif
	18
	19	#include "wx/fontutil.h"
	20
	21	#include <gdk/gdk.h>
	22	#include <gdk/gdkx.h>
	23	#include <gdk/gdkprivate.h>
	24	#include <gtk/gtk.h>
	25
	26	#include <X11/Xatom.h>
	27
	28	#define SHIFT (8*(sizeof(short int)-sizeof(char)))
	29
	30	// ----------------------------------------------------------------------------
	31	// wxSystemObjects
	32	// ----------------------------------------------------------------------------
	33
	34	struct wxSystemObjects
	35	{
	36	wxColour m_colBtnFace,
	37	m_colBtnShadow,
	38	m_colBtnHighlight,
	39	m_colHighlight,
	40	m_colHighlightText,
	41	m_colListBox,
	42	m_colBtnText,
	43	m_colMenuItemHighlight,
	44	m_colTooltip,
	45	m_colTooltipText;
	46
	47	wxFont m_fontSystem;
	48	};
	49
	50	static wxSystemObjects gs_objects;
	51
	52	// ----------------------------------------------------------------------------
	53	// wxSystemSettings implementation
	54	// ----------------------------------------------------------------------------
	55
	56	// kind of widget to use in GetColourFromGTKWidget
	57	enum wxGtkWidgetType
	58	{
	59	wxGTK_BUTTON,
	60	wxGTK_LIST,
	61	wxGTK_MENUITEM
	62	};
	63
	64	// the colour we need
	65	enum wxGtkColourType
	66	{
	67	wxGTK_FG,
	68	wxGTK_BG,
	69	wxGTK_BASE
	70	};
	71
	72	// wxSystemSettings::GetColour() helper: get the colours from a GTK+
	73	// widget style, return true if we did get them, false to use defaults
	74	static bool GetColourFromGTKWidget(int& red, int& green, int& blue,
	75	wxGtkWidgetType type = wxGTK_BUTTON,
	76	GtkStateType state = GTK_STATE_NORMAL,
	77	wxGtkColourType colour = wxGTK_BG)
	78	{
	79	GtkWidget *widget;
	80	switch ( type )
	81	{
	82	default:
	83	wxFAIL_MSG( wxT("unexpected GTK widget type") );
	84	// fall through
	85
	86	case wxGTK_BUTTON:
	87	widget = gtk_button_new();
	88	break;
	89
	90	case wxGTK_LIST:
	91	widget = gtk_list_new();
	92	break;
	93
	94	case wxGTK_MENUITEM:
	95	widget = gtk_menu_item_new();
	96	}
	97
	98	GtkStyle *def = gtk_rc_get_style( widget );
	99	if ( !def )
	100	def = gtk_widget_get_default_style();
	101
	102	bool ok;
	103	if ( def )
	104	{
	105	GdkColor *col;
	106	switch ( colour )
	107	{
	108	default:
	109	wxFAIL_MSG( wxT("unexpected GTK colour type") );
	110	// fall through
	111
	112	case wxGTK_FG:
	113	col = def->fg;
	114	break;
	115
	116	case wxGTK_BG:
	117	col = def->bg;
	118	break;
	119
	120	case wxGTK_BASE:
	121	col = def->base;
	122	break;
	123	}
	124
	125	red = col[state].red;
	126	green = col[state].green;
	127	blue = col[state].blue;
	128
	129	ok = true;
	130	}
	131	else
	132	{
	133	ok = false;
	134	}
	135
	136	gtk_widget_destroy( widget );
	137
	138	return ok;
	139	}
	140
	141	static void GetTooltipColors()
	142	{
	143	GtkTooltips* tooltips = gtk_tooltips_new();
	144	gtk_tooltips_force_window(tooltips);
	145	gtk_widget_ensure_style(tooltips->tip_window);
	146	GdkColor c = tooltips->tip_window->style->bg[GTK_STATE_NORMAL];
	147	gs_objects.m_colTooltip = wxColor(c.red >> SHIFT, c.green >> SHIFT, c.blue >> SHIFT);
	148	c = tooltips->tip_window->style->fg[GTK_STATE_NORMAL];
	149	gs_objects.m_colTooltipText = wxColor(c.red >> SHIFT, c.green >> SHIFT, c.blue >> SHIFT);
	150	gtk_object_sink(reinterpret_cast<GtkObject*>(tooltips));
	151	}
	152
	153	wxColour wxSystemSettingsNative::GetColour( wxSystemColour index )
	154	{
	155	switch (index)
	156	{
	157	case wxSYS_COLOUR_SCROLLBAR:
	158	case wxSYS_COLOUR_BACKGROUND:
	159	case wxSYS_COLOUR_INACTIVECAPTION:
	160	case wxSYS_COLOUR_MENU:
	161	case wxSYS_COLOUR_WINDOWFRAME:
	162	case wxSYS_COLOUR_ACTIVEBORDER:
	163	case wxSYS_COLOUR_INACTIVEBORDER:
	164	case wxSYS_COLOUR_BTNFACE:
	165	case wxSYS_COLOUR_MENUBAR:
	166	case wxSYS_COLOUR_3DLIGHT:
	167	if (!gs_objects.m_colBtnFace.IsOk())
	168	{
	169	int red, green, blue;
	170	if ( !GetColourFromGTKWidget(red, green, blue) )
	171	{
	172	red =
	173	green = 0;
	174	blue = 0x9c40;
	175	}
	176
	177	gs_objects.m_colBtnFace = wxColour( red >> SHIFT,
	178	green >> SHIFT,
	179	blue >> SHIFT );
	180	}
	181	return gs_objects.m_colBtnFace;
	182
	183	case wxSYS_COLOUR_WINDOW:
	184	return *wxWHITE;
	185
	186	case wxSYS_COLOUR_3DDKSHADOW:
	187	return *wxBLACK;
	188
	189	case wxSYS_COLOUR_GRAYTEXT:
	190	case wxSYS_COLOUR_BTNSHADOW:
	191	//case wxSYS_COLOUR_3DSHADOW:
	192	if (!gs_objects.m_colBtnShadow.IsOk())
	193	{
	194	wxColour faceColour(GetColour(wxSYS_COLOUR_3DFACE));
	195	gs_objects.m_colBtnShadow =
	196	wxColour((unsigned char) (faceColour.Red() * 0.666),
	197	(unsigned char) (faceColour.Green() * 0.666),
	198	(unsigned char) (faceColour.Blue() * 0.666));
	199	}
	200
	201	return gs_objects.m_colBtnShadow;
	202
	203	case wxSYS_COLOUR_3DHIGHLIGHT:
	204	//case wxSYS_COLOUR_BTNHIGHLIGHT:
	205	return * wxWHITE;
	206
	207	case wxSYS_COLOUR_HIGHLIGHT:
	208	if (!gs_objects.m_colHighlight.IsOk())
	209	{
	210	int red, green, blue;
	211	if ( !GetColourFromGTKWidget(red, green, blue,
	212	wxGTK_BUTTON,
	213	GTK_STATE_SELECTED) )
	214	{
	215	red =
	216	green = 0;
	217	blue = 0x9c40;
	218	}
	219
	220	gs_objects.m_colHighlight = wxColour( red >> SHIFT,
	221	green >> SHIFT,
	222	blue >> SHIFT );
	223	}
	224	return gs_objects.m_colHighlight;
	225
	226	case wxSYS_COLOUR_LISTBOX:
	227	if (!gs_objects.m_colListBox.IsOk())
	228	{
	229	int red, green, blue;
	230	if ( GetColourFromGTKWidget(red, green, blue,
	231	wxGTK_LIST,
	232	GTK_STATE_NORMAL,
	233	wxGTK_BASE) )
	234	{
	235	gs_objects.m_colListBox = wxColour( red >> SHIFT,
	236	green >> SHIFT,
	237	blue >> SHIFT );
	238	}
	239	else
	240	{
	241	gs_objects.m_colListBox = wxColour(*wxWHITE);
	242	}
	243	}
	244	return gs_objects.m_colListBox;
	245
	246	case wxSYS_COLOUR_MENUTEXT:
	247	case wxSYS_COLOUR_WINDOWTEXT:
	248	case wxSYS_COLOUR_CAPTIONTEXT:
	249	case wxSYS_COLOUR_INACTIVECAPTIONTEXT:
	250	case wxSYS_COLOUR_BTNTEXT:
	251	case wxSYS_COLOUR_LISTBOXTEXT:
	252	if (!gs_objects.m_colBtnText.IsOk())
	253	{
	254	int red, green, blue;
	255	if ( !GetColourFromGTKWidget(red, green, blue,
	256	wxGTK_BUTTON,
	257	GTK_STATE_NORMAL,
	258	wxGTK_FG) )
	259	{
	260	red =
	261	green =
	262	blue = 0;
	263	}
	264
	265	gs_objects.m_colBtnText = wxColour( red >> SHIFT,
	266	green >> SHIFT,
	267	blue >> SHIFT );
	268	}
	269	return gs_objects.m_colBtnText;
	270
	271	case wxSYS_COLOUR_INFOBK:
	272	if (!gs_objects.m_colTooltip.IsOk()) {
	273	GetTooltipColors();
	274	}
	275	return gs_objects.m_colTooltip;
	276
	277	case wxSYS_COLOUR_INFOTEXT:
	278	if (!gs_objects.m_colTooltipText.IsOk()) {
	279	GetTooltipColors();
	280	}
	281	return gs_objects.m_colTooltipText;
	282
	283	case wxSYS_COLOUR_LISTBOXHIGHLIGHTTEXT:
	284	case wxSYS_COLOUR_HIGHLIGHTTEXT:
	285	if (!gs_objects.m_colHighlightText.IsOk())
	286	{
	287	wxColour hclr = GetColour(wxSYS_COLOUR_HIGHLIGHT);
	288	if (hclr.Red() > 200 && hclr.Green() > 200 && hclr.Blue() > 200)
	289	gs_objects.m_colHighlightText = wxColour(*wxBLACK);
	290	else
	291	gs_objects.m_colHighlightText = wxColour(*wxWHITE);
	292	}
	293	return gs_objects.m_colHighlightText;
	294
	295	case wxSYS_COLOUR_APPWORKSPACE:
	296	return *wxWHITE; // ?
	297
	298	case wxSYS_COLOUR_ACTIVECAPTION:
	299	case wxSYS_COLOUR_MENUHILIGHT:
	300	if (!gs_objects.m_colMenuItemHighlight.IsOk())
	301	{
	302	int red, green, blue;
	303	if ( !GetColourFromGTKWidget(red, green, blue,
	304	wxGTK_MENUITEM,
	305	GTK_STATE_SELECTED,
	306	wxGTK_BG) )
	307	{
	308	red =
	309	green =
	310	blue = 0;
	311	}
	312
	313	gs_objects.m_colMenuItemHighlight = wxColour( red >> SHIFT,
	314	green >> SHIFT,
	315	blue >> SHIFT );
	316	}
	317	return gs_objects.m_colMenuItemHighlight;
	318
	319	case wxSYS_COLOUR_HOTLIGHT:
	320	case wxSYS_COLOUR_GRADIENTACTIVECAPTION:
	321	case wxSYS_COLOUR_GRADIENTINACTIVECAPTION:
	322	// TODO
	323	return *wxBLACK;
	324
	325	case wxSYS_COLOUR_MAX:
	326	default:
	327	wxFAIL_MSG( wxT("unknown system colour index") );
	328	}
	329
	330	return *wxWHITE;
	331	}
	332
	333	wxFont wxSystemSettingsNative::GetFont( wxSystemFont index )
	334	{
	335	switch (index)
	336	{
	337	case wxSYS_OEM_FIXED_FONT:
	338	case wxSYS_ANSI_FIXED_FONT:
	339	case wxSYS_SYSTEM_FIXED_FONT:
	340	{
	341	return *wxNORMAL_FONT;
	342	}
	343	case wxSYS_ANSI_VAR_FONT:
	344	case wxSYS_SYSTEM_FONT:
	345	case wxSYS_DEVICE_DEFAULT_FONT:
	346	case wxSYS_DEFAULT_GUI_FONT:
	347	{
	348	if (!gs_objects.m_fontSystem.IsOk())
	349	{
	350	gs_objects.m_fontSystem = wxFont( 12, wxSWISS, wxNORMAL, wxNORMAL );
	351	}
	352	return gs_objects.m_fontSystem;
	353	}
	354
	355	default:
	356	return wxNullFont;
	357	}
	358	}
	359
	360	int
	361	wxSystemSettingsNative::GetMetric(wxSystemMetric index, wxWindow* WXUNUSED(win))
	362	{
	363	switch (index)
	364	{
	365	case wxSYS_CURSOR_X:
	366	case wxSYS_CURSOR_Y:
	367	return 16;
	368
	369	// MBN: ditto for icons
	370	case wxSYS_ICON_X: return 32;
	371	case wxSYS_ICON_Y: return 32;
	372
	373	case wxSYS_SCREEN_X:
	374	return gdk_screen_width();
	375
	376	case wxSYS_SCREEN_Y:
	377	return gdk_screen_height();
	378
	379	case wxSYS_HSCROLL_Y: return 15;
	380	case wxSYS_VSCROLL_X: return 15;
	381
	382	// a gtk1 implementation should be possible too if gtk2 efficiency/convenience functions aren't used
	383	#if 0
	384	case wxSYS_CAPTION_Y:
	385	if (!window)
	386	// No realized window specified, and no implementation for that case yet.
	387	return -1;
	388
	389	// Check if wm supports frame extents - we can't know the caption height if it does not.
	390	#if GTK_CHECK_VERSION(2,2,0)
	391	if (!gtk_check_version(2,2,0))
	392	{
	393	if (!gdk_x11_screen_supports_net_wm_hint(
	394	gdk_drawable_get_screen(window),
	395	gdk_atom_intern("_NET_FRAME_EXTENTS", false) ) )
	396	return -1;
	397	}
	398	else
	399	#endif
	400	{
	401	if (!gdk_net_wm_supports(gdk_atom_intern("_NET_FRAME_EXTENTS", false)))
	402	return -1;
	403	}
	404
	405	wxASSERT_MSG( wxDynamicCast(win, wxTopLevelWindow),
	406	wxT("Asking for caption height of a non toplevel window") );
	407
	408	// Get the height of the top windowmanager border.
	409	// This is the titlebar in most cases. The titlebar might be elsewhere, and
	410	// we could check which is the thickest wm border to decide on which side the
	411	// titlebar is, but this might lead to interesting behaviours in used code.
	412	// Reconsider when we have a way to report to the user on which side it is.
	413
	414	Atom type;
	415	gint format;
	416	gulong nitems;
	417
	418	#if GTK_CHECK_VERSION(2,2,0)
	419	if (!gtk_check_version(2,2,0))
	420	{
	421	gulong bytes_after;
	422	success = (XGetWindowProperty (GDK_DISPLAY_XDISPLAY(gdk_drawable_get_display(window)),
	423	GDK_WINDOW_XWINDOW(window),
	424	gdk_x11_get_xatom_by_name_for_display (
	425	gdk_drawable_get_display(window),
	426	"_NET_FRAME_EXTENTS" ),
	427	0, // left, right, top, bottom, CARDINAL[4]/32
	428	G_MAXLONG, // size of long
	429	false, // do not delete property
	430	XA_CARDINAL, // 32 bit
	431	&type, &format, &nitems, &bytes_after, &data
	432	) == Success);
	433	}
	434	#endif
	435	if (success)
	436	{
	437	int caption_height = -1;
	438
	439	if ((type == XA_CARDINAL) && (format == 32) && (nitems >= 3) && (data))
	440	{
	441	long *borders;
	442	borders = (long*)data;
	443	caption_height = borders[2]; // top frame extent
	444	}
	445
	446	if (data)
	447	XFree(data);
	448
	449	return caption_height;
	450	}
	451
	452	// Try a default approach without a window pointer, if possible
	453	// ...
	454
	455	return -1;
	456	#endif // gtk2
	457
	458	case wxSYS_PENWINDOWS_PRESENT:
	459	// No MS Windows for Pen computing extension available in X11 based gtk+.
	460	return 0;
	461
	462	default:
	463	return -1; // metric is unknown
	464	}
	465	}
	466
	467	bool wxSystemSettingsNative::HasFeature(wxSystemFeature index)
	468	{
	469	switch (index)
	470	{
	471	case wxSYS_CAN_ICONIZE_FRAME:
	472	return false;
	473
	474	case wxSYS_CAN_DRAW_FRAME_DECORATIONS:
	475	return true;
	476
	477	default:
	478	return false;
	479	}
	480	}