src/gtk/settings.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        gtk/settings.cpp
// Purpose:
// Author:      Robert Roebling
// Modified by: Mart Raudsepp (GetMetric)
// 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 "wx/toplevel.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( _T("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( _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;
}

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(wx_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.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:
            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;

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

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

        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, wxWindow* win )
{
#ifdef __WXGTK20__
    bool success = false;

    guchar *data = NULL;
    GdkWindow *window = NULL;
    if(win && GTK_WIDGET_REALIZED(win->GetHandle()))
        window = win->GetHandle()->window;
#endif

    switch (index)
    {
#ifdef __WXGTK20__
        case wxSYS_BORDER_X:
        case wxSYS_BORDER_Y:
        case wxSYS_EDGE_X:
        case wxSYS_EDGE_Y:
        case wxSYS_FRAMESIZE_X:
        case wxSYS_FRAMESIZE_Y:
            // If a window is specified/realized, and it is a toplevel window, we can query from wm.
            // The returned border thickness is outside the client area in that case.
            if (window)
            {
                wxTopLevelWindow *tlw = wxDynamicCast(win, wxTopLevelWindow);
                if (!tlw)
                    return -1; // not a tlw, not sure how to approach
                else
                {
                    // Check if wm supports frame extents - we can't know
                    // the border widths 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;
                    }

                    // Get the frame extents from the windowmanager.
                    // In most cases the top extent is the titlebar, so we use the bottom extent
                    // for the heights.

                    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 border_return = -1;

                        if ((type == XA_CARDINAL) && (format == 32) && (nitems >= 4) && (data))
                        {
                            long *borders;
                            borders = (long*)data;
                            switch(index)
                            {
                                case wxSYS_BORDER_X:
                                case wxSYS_EDGE_X:
                                case wxSYS_FRAMESIZE_X:
                                    border_return = borders[1]; // width of right extent
                                    break;
                                default:
                                    border_return = borders[3]; // height of bottom extent
                                    break;
                            }
                        }

                        if (data)
                            XFree(data);

                        return border_return;
                    }
                }
            }

            return -1; // no window specified
#endif // gtk2

        case wxSYS_CURSOR_X:
        case wxSYS_CURSOR_Y:
#ifdef __WXGTK24__
            if (!gtk_check_version(2,4,0))
            {
                if (window)
                    return gdk_display_get_default_cursor_size(gdk_drawable_get_display(window));
                else
                    return gdk_display_get_default_cursor_size(gdk_display_get_default());
            }
            else
#endif
                return 16;

#ifdef __WXGTK20__
        case wxSYS_DCLICK_X:
        case wxSYS_DCLICK_Y:
            gint dclick_distance;
#if GTK_CHECK_VERSION(2,2,0)
            if (window && !gtk_check_version(2,2,0))
                g_object_get(gtk_settings_get_for_screen(gdk_drawable_get_screen(window)),
                                "gtk-double-click-distance", &dclick_distance, NULL);
            else
#endif
                g_object_get(gtk_settings_get_default(),
                                "gtk-double-click-distance", &dclick_distance, NULL);

            return dclick_distance * 2;
#endif // gtk2

#ifdef __WXGTK20__
        case wxSYS_DRAG_X:
        case wxSYS_DRAG_Y:
            gint drag_threshold;
#if GTK_CHECK_VERSION(2,2,0)
            if (window && !gtk_check_version(2,2,0))
            {
                g_object_get(
                        gtk_settings_get_for_screen(gdk_drawable_get_screen(window)),
                        "gtk-dnd-drag-threshold",
                        &drag_threshold, NULL);
            }
            else
#endif
            {
                g_object_get(gtk_settings_get_default(),
                             "gtk-dnd-drag-threshold", &drag_threshold, NULL);
            }

            return drag_threshold * 2;
#endif

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

        case wxSYS_SCREEN_X:
#if defined(__WXGTK20__) && GTK_CHECK_VERSION(2,2,0)
            if (window && !gtk_check_version(2,2,0))
                return gdk_screen_get_width(gdk_drawable_get_screen(window));
            else
#endif
                return gdk_screen_width();

        case wxSYS_SCREEN_Y:
#if defined(__WXGTK20__) && GTK_CHECK_VERSION(2,2,0)
            if (window && !gtk_check_version(2,2,0))
                return gdk_screen_get_height(gdk_drawable_get_screen(window));
            else
#endif
                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
#ifdef __WXGTK20__
        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;
            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	// Modified by: Mart Raudsepp (GetMetric)
	6	// Id: $Id$
	7	// Copyright: (c) 1998 Robert Roebling
	8	// Licence: wxWindows licence
	9	/////////////////////////////////////////////////////////////////////////////
	10
	11
	12	#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
	13	#pragma implementation "settings.h"
	14	#endif
	15
	16	// For compilers that support precompilation, includes "wx.h".
	17	#include "wx/wxprec.h"
	18
	19	#include "wx/settings.h"
	20	#include "wx/debug.h"
	21	#include "wx/cmndata.h"
	22	#include "wx/fontutil.h"
	23	#include "wx/toplevel.h"
	24
	25	#include <gdk/gdk.h>
	26	#include <gdk/gdkx.h>
	27	#include <gdk/gdkprivate.h>
	28	#include <gtk/gtk.h>
	29
	30	#include <X11/Xatom.h>
	31
	32	#define SHIFT (8*(sizeof(short int)-sizeof(char)))
	33
	34	// ----------------------------------------------------------------------------
	35	// wxSystemObjects
	36	// ----------------------------------------------------------------------------
	37
	38	struct wxSystemObjects
	39	{
	40	wxColour m_colBtnFace,
	41	m_colBtnShadow,
	42	m_colBtnHighlight,
	43	m_colHighlight,
	44	m_colHighlightText,
	45	m_colListBox,
	46	m_colBtnText,
	47	m_colMenuItemHighlight,
	48	m_colTooltip,
	49	m_colTooltipText;
	50
	51	wxFont m_fontSystem;
	52	};
	53
	54	static wxSystemObjects gs_objects;
	55
	56	// ----------------------------------------------------------------------------
	57	// wxSystemSettings implementation
	58	// ----------------------------------------------------------------------------
	59
	60	// kind of widget to use in GetColourFromGTKWidget
	61	enum wxGtkWidgetType
	62	{
	63	wxGTK_BUTTON,
	64	wxGTK_LIST,
	65	wxGTK_MENUITEM
	66	};
	67
	68	// the colour we need
	69	enum wxGtkColourType
	70	{
	71	wxGTK_FG,
	72	wxGTK_BG,
	73	wxGTK_BASE
	74	};
	75
	76	// wxSystemSettings::GetColour() helper: get the colours from a GTK+
	77	// widget style, return true if we did get them, false to use defaults
	78	static bool GetColourFromGTKWidget(int& red, int& green, int& blue,
	79	wxGtkWidgetType type = wxGTK_BUTTON,
	80	GtkStateType state = GTK_STATE_NORMAL,
	81	wxGtkColourType colour = wxGTK_BG)
	82	{
	83	GtkWidget *widget;
	84	switch ( type )
	85	{
	86	default:
	87	wxFAIL_MSG( _T("unexpected GTK widget type") );
	88	// fall through
	89
	90	case wxGTK_BUTTON:
	91	widget = gtk_button_new();
	92	break;
	93
	94	case wxGTK_LIST:
	95	widget = gtk_list_new();
	96	break;
	97
	98	case wxGTK_MENUITEM:
	99	widget = gtk_menu_item_new();
	100	}
	101
	102	GtkStyle *def = gtk_rc_get_style( widget );
	103	if ( !def )
	104	def = gtk_widget_get_default_style();
	105
	106	bool ok;
	107	if ( def )
	108	{
	109	GdkColor *col;
	110	switch ( colour )
	111	{
	112	default:
	113	wxFAIL_MSG( _T("unexpected GTK colour type") );
	114	// fall through
	115
	116	case wxGTK_FG:
	117	col = def->fg;
	118	break;
	119
	120	case wxGTK_BG:
	121	col = def->bg;
	122	break;
	123
	124	case wxGTK_BASE:
	125	col = def->base;
	126	break;
	127	}
	128
	129	red = col[state].red;
	130	green = col[state].green;
	131	blue = col[state].blue;
	132
	133	ok = TRUE;
	134	}
	135	else
	136	{
	137	ok = FALSE;
	138	}
	139
	140	gtk_widget_destroy( widget );
	141
	142	return ok;
	143	}
	144
	145	static void GetTooltipColors()
	146	{
	147	GtkTooltips* tooltips = gtk_tooltips_new();
	148	gtk_tooltips_force_window(tooltips);
	149	gtk_widget_ensure_style(tooltips->tip_window);
	150	GdkColor c = tooltips->tip_window->style->bg[GTK_STATE_NORMAL];
	151	gs_objects.m_colTooltip = wxColor(c.red >> SHIFT, c.green >> SHIFT, c.blue >> SHIFT);
	152	c = tooltips->tip_window->style->fg[GTK_STATE_NORMAL];
	153	gs_objects.m_colTooltipText = wxColor(c.red >> SHIFT, c.green >> SHIFT, c.blue >> SHIFT);
	154	gtk_object_sink(wx_reinterpret_cast(GtkObject*, tooltips));
	155	}
	156
	157	wxColour wxSystemSettingsNative::GetColour( wxSystemColour index )
	158	{
	159	switch (index)
	160	{
	161	case wxSYS_COLOUR_SCROLLBAR:
	162	case wxSYS_COLOUR_BACKGROUND:
	163	case wxSYS_COLOUR_INACTIVECAPTION:
	164	case wxSYS_COLOUR_MENU:
	165	case wxSYS_COLOUR_WINDOWFRAME:
	166	case wxSYS_COLOUR_ACTIVEBORDER:
	167	case wxSYS_COLOUR_INACTIVEBORDER:
	168	case wxSYS_COLOUR_BTNFACE:
	169	case wxSYS_COLOUR_MENUBAR:
	170	case wxSYS_COLOUR_3DLIGHT:
	171	if (!gs_objects.m_colBtnFace.Ok())
	172	{
	173	int red, green, blue;
	174	if ( !GetColourFromGTKWidget(red, green, blue) )
	175	{
	176	red =
	177	green = 0;
	178	blue = 0x9c40;
	179	}
	180
	181	gs_objects.m_colBtnFace = wxColour( red >> SHIFT,
	182	green >> SHIFT,
	183	blue >> SHIFT );
	184	}
	185	return gs_objects.m_colBtnFace;
	186
	187	case wxSYS_COLOUR_WINDOW:
	188	return *wxWHITE;
	189
	190	case wxSYS_COLOUR_3DDKSHADOW:
	191	return *wxBLACK;
	192
	193	case wxSYS_COLOUR_GRAYTEXT:
	194	case wxSYS_COLOUR_BTNSHADOW:
	195	//case wxSYS_COLOUR_3DSHADOW:
	196	if (!gs_objects.m_colBtnShadow.Ok())
	197	{
	198	wxColour faceColour(GetColour(wxSYS_COLOUR_3DFACE));
	199	gs_objects.m_colBtnShadow =
	200	wxColour((unsigned char) (faceColour.Red() * 0.666),
	201	(unsigned char) (faceColour.Green() * 0.666),
	202	(unsigned char) (faceColour.Blue() * 0.666));
	203	}
	204
	205	return gs_objects.m_colBtnShadow;
	206
	207	case wxSYS_COLOUR_3DHIGHLIGHT:
	208	//case wxSYS_COLOUR_BTNHIGHLIGHT:
	209	return * wxWHITE;
	210
	211	case wxSYS_COLOUR_HIGHLIGHT:
	212	if (!gs_objects.m_colHighlight.Ok())
	213	{
	214	int red, green, blue;
	215	if ( !GetColourFromGTKWidget(red, green, blue,
	216	wxGTK_BUTTON,
	217	GTK_STATE_SELECTED) )
	218	{
	219	red =
	220	green = 0;
	221	blue = 0x9c40;
	222	}
	223
	224	gs_objects.m_colHighlight = wxColour( red >> SHIFT,
	225	green >> SHIFT,
	226	blue >> SHIFT );
	227	}
	228	return gs_objects.m_colHighlight;
	229
	230	case wxSYS_COLOUR_LISTBOX:
	231	if (!gs_objects.m_colListBox.Ok())
	232	{
	233	int red, green, blue;
	234	if ( GetColourFromGTKWidget(red, green, blue,
	235	wxGTK_LIST,
	236	GTK_STATE_NORMAL,
	237	wxGTK_BASE) )
	238	{
	239	gs_objects.m_colListBox = wxColour( red >> SHIFT,
	240	green >> SHIFT,
	241	blue >> SHIFT );
	242	}
	243	else
	244	{
	245	gs_objects.m_colListBox = wxColour(*wxWHITE);
	246	}
	247	}
	248	return gs_objects.m_colListBox;
	249
	250	case wxSYS_COLOUR_MENUTEXT:
	251	case wxSYS_COLOUR_WINDOWTEXT:
	252	case wxSYS_COLOUR_CAPTIONTEXT:
	253	case wxSYS_COLOUR_INACTIVECAPTIONTEXT:
	254	case wxSYS_COLOUR_BTNTEXT:
	255	if (!gs_objects.m_colBtnText.Ok())
	256	{
	257	int red, green, blue;
	258	if ( !GetColourFromGTKWidget(red, green, blue,
	259	wxGTK_BUTTON,
	260	GTK_STATE_NORMAL,
	261	wxGTK_FG) )
	262	{
	263	red =
	264	green =
	265	blue = 0;
	266	}
	267
	268	gs_objects.m_colBtnText = wxColour( red >> SHIFT,
	269	green >> SHIFT,
	270	blue >> SHIFT );
	271	}
	272	return gs_objects.m_colBtnText;
	273
	274	case wxSYS_COLOUR_INFOBK:
	275	if (!gs_objects.m_colTooltip.Ok()) {
	276	GetTooltipColors();
	277	}
	278	return gs_objects.m_colTooltip;
	279
	280	case wxSYS_COLOUR_INFOTEXT:
	281	if (!gs_objects.m_colTooltipText.Ok()) {
	282	GetTooltipColors();
	283	}
	284	return gs_objects.m_colTooltipText;
	285
	286	case wxSYS_COLOUR_HIGHLIGHTTEXT:
	287	if (!gs_objects.m_colHighlightText.Ok())
	288	{
	289	wxColour hclr = GetColour(wxSYS_COLOUR_HIGHLIGHT);
	290	if (hclr.Red() > 200 && hclr.Green() > 200 && hclr.Blue() > 200)
	291	gs_objects.m_colHighlightText = wxColour(*wxBLACK);
	292	else
	293	gs_objects.m_colHighlightText = wxColour(*wxWHITE);
	294	}
	295	return gs_objects.m_colHighlightText;
	296
	297	case wxSYS_COLOUR_APPWORKSPACE:
	298	return *wxWHITE; // ?
	299
	300	case wxSYS_COLOUR_ACTIVECAPTION:
	301	case wxSYS_COLOUR_MENUHILIGHT:
	302	if (!gs_objects.m_colMenuItemHighlight.Ok())
	303	{
	304	int red, green, blue;
	305	if ( !GetColourFromGTKWidget(red, green, blue,
	306	wxGTK_MENUITEM,
	307	GTK_STATE_SELECTED,
	308	wxGTK_BG) )
	309	{
	310	red =
	311	green =
	312	blue = 0;
	313	}
	314
	315	gs_objects.m_colMenuItemHighlight = wxColour( red >> SHIFT,
	316	green >> SHIFT,
	317	blue >> SHIFT );
	318	}
	319	return gs_objects.m_colMenuItemHighlight;
	320
	321	case wxSYS_COLOUR_HOTLIGHT:
	322	case wxSYS_COLOUR_GRADIENTACTIVECAPTION:
	323	case wxSYS_COLOUR_GRADIENTINACTIVECAPTION:
	324	// TODO
	325	return *wxBLACK;
	326
	327	case wxSYS_COLOUR_MAX:
	328	default:
	329	wxFAIL_MSG( _T("unknown system colour index") );
	330	}
	331
	332	return *wxWHITE;
	333	}
	334
	335	wxFont wxSystemSettingsNative::GetFont( wxSystemFont index )
	336	{
	337	switch (index)
	338	{
	339	case wxSYS_OEM_FIXED_FONT:
	340	case wxSYS_ANSI_FIXED_FONT:
	341	case wxSYS_SYSTEM_FIXED_FONT:
	342	{
	343	return *wxNORMAL_FONT;
	344	}
	345	case wxSYS_ANSI_VAR_FONT:
	346	case wxSYS_SYSTEM_FONT:
	347	case wxSYS_DEVICE_DEFAULT_FONT:
	348	case wxSYS_DEFAULT_GUI_FONT:
	349	{
	350	if (!gs_objects.m_fontSystem.Ok())
	351	{
	352	#ifdef __WXGTK20__
	353	GtkWidget *widget = gtk_button_new();
	354	GtkStyle *def = gtk_rc_get_style( widget );
	355	if ( !def \|\| !def->font_desc )
	356	def = gtk_widget_get_default_style();
	357	if ( def && def->font_desc )
	358	{
	359	wxNativeFontInfo info;
	360	info.description =
	361	pango_font_description_copy(def->font_desc);
	362	gs_objects.m_fontSystem = wxFont(info);
	363	}
	364	else
	365	{
	366	GtkSettings *settings = gtk_settings_get_default();
	367	gchar *font_name = NULL;
	368	g_object_get ( settings,
	369	"gtk-font-name",
	370	&font_name,
	371	NULL);
	372	if (!font_name)
	373	gs_objects.m_fontSystem = wxFont( 12, wxSWISS, wxNORMAL, wxNORMAL );
	374	else
	375	gs_objects.m_fontSystem = wxFont(wxString::FromAscii(font_name));
	376	g_free (font_name);
	377	}
	378	gtk_widget_destroy( widget );
	379	#else
	380	gs_objects.m_fontSystem = wxFont( 12, wxSWISS, wxNORMAL, wxNORMAL );
	381	#endif
	382	}
	383	return gs_objects.m_fontSystem;
	384	}
	385
	386	default:
	387	return wxNullFont;
	388	}
	389	}
	390
	391	int wxSystemSettingsNative::GetMetric( wxSystemMetric index, wxWindow* win )
	392	{
	393	#ifdef __WXGTK20__
	394	bool success = false;
	395
	396	guchar *data = NULL;
	397	GdkWindow *window = NULL;
	398	if(win && GTK_WIDGET_REALIZED(win->GetHandle()))
	399	window = win->GetHandle()->window;
	400	#endif
	401
	402	switch (index)
	403	{
	404	#ifdef __WXGTK20__
	405	case wxSYS_BORDER_X:
	406	case wxSYS_BORDER_Y:
	407	case wxSYS_EDGE_X:
	408	case wxSYS_EDGE_Y:
	409	case wxSYS_FRAMESIZE_X:
	410	case wxSYS_FRAMESIZE_Y:
	411	// If a window is specified/realized, and it is a toplevel window, we can query from wm.
	412	// The returned border thickness is outside the client area in that case.
	413	if (window)
	414	{
	415	wxTopLevelWindow *tlw = wxDynamicCast(win, wxTopLevelWindow);
	416	if (!tlw)
	417	return -1; // not a tlw, not sure how to approach
	418	else
	419	{
	420	// Check if wm supports frame extents - we can't know
	421	// the border widths if it does not.
	422	#if GTK_CHECK_VERSION(2,2,0)
	423	if (!gtk_check_version(2,2,0))
	424	{
	425	if (!gdk_x11_screen_supports_net_wm_hint(
	426	gdk_drawable_get_screen(window),
	427	gdk_atom_intern("_NET_FRAME_EXTENTS", false) ) )
	428	return -1;
	429	}
	430	else
	431	#endif
	432	{
	433	if (!gdk_net_wm_supports(gdk_atom_intern("_NET_FRAME_EXTENTS", false)))
	434	return -1;
	435	}
	436
	437	// Get the frame extents from the windowmanager.
	438	// In most cases the top extent is the titlebar, so we use the bottom extent
	439	// for the heights.
	440
	441	Atom type;
	442	gint format;
	443	gulong nitems;
	444
	445	#if GTK_CHECK_VERSION(2,2,0)
	446	if (!gtk_check_version(2,2,0))
	447	{
	448	gulong bytes_after;
	449	success = (XGetWindowProperty (GDK_DISPLAY_XDISPLAY(gdk_drawable_get_display(window)),
	450	GDK_WINDOW_XWINDOW(window),
	451	gdk_x11_get_xatom_by_name_for_display (
	452	gdk_drawable_get_display(window),
	453	"_NET_FRAME_EXTENTS" ),
	454	0, // left, right, top, bottom, CARDINAL[4]/32
	455	G_MAXLONG, // size of long
	456	false, // do not delete property
	457	XA_CARDINAL, // 32 bit
	458	&type, &format, &nitems, &bytes_after, &data
	459	) == Success);
	460	}
	461	#endif
	462	if (success)
	463	{
	464	int border_return = -1;
	465
	466	if ((type == XA_CARDINAL) && (format == 32) && (nitems >= 4) && (data))
	467	{
	468	long *borders;
	469	borders = (long*)data;
	470	switch(index)
	471	{
	472	case wxSYS_BORDER_X:
	473	case wxSYS_EDGE_X:
	474	case wxSYS_FRAMESIZE_X:
	475	border_return = borders[1]; // width of right extent
	476	break;
	477	default:
	478	border_return = borders[3]; // height of bottom extent
	479	break;
	480	}
	481	}
	482
	483	if (data)
	484	XFree(data);
	485
	486	return border_return;
	487	}
	488	}
	489	}
	490
	491	return -1; // no window specified
	492	#endif // gtk2
	493
	494	case wxSYS_CURSOR_X:
	495	case wxSYS_CURSOR_Y:
	496	#ifdef __WXGTK24__
	497	if (!gtk_check_version(2,4,0))
	498	{
	499	if (window)
	500	return gdk_display_get_default_cursor_size(gdk_drawable_get_display(window));
	501	else
	502	return gdk_display_get_default_cursor_size(gdk_display_get_default());
	503	}
	504	else
	505	#endif
	506	return 16;
	507
	508	#ifdef __WXGTK20__
	509	case wxSYS_DCLICK_X:
	510	case wxSYS_DCLICK_Y:
	511	gint dclick_distance;
	512	#if GTK_CHECK_VERSION(2,2,0)
	513	if (window && !gtk_check_version(2,2,0))
	514	g_object_get(gtk_settings_get_for_screen(gdk_drawable_get_screen(window)),
	515	"gtk-double-click-distance", &dclick_distance, NULL);
	516	else
	517	#endif
	518	g_object_get(gtk_settings_get_default(),
	519	"gtk-double-click-distance", &dclick_distance, NULL);
	520
	521	return dclick_distance * 2;
	522	#endif // gtk2
	523
	524	#ifdef __WXGTK20__
	525	case wxSYS_DRAG_X:
	526	case wxSYS_DRAG_Y:
	527	gint drag_threshold;
	528	#if GTK_CHECK_VERSION(2,2,0)
	529	if (window && !gtk_check_version(2,2,0))
	530	{
	531	g_object_get(
	532	gtk_settings_get_for_screen(gdk_drawable_get_screen(window)),
	533	"gtk-dnd-drag-threshold",
	534	&drag_threshold, NULL);
	535	}
	536	else
	537	#endif
	538	{
	539	g_object_get(gtk_settings_get_default(),
	540	"gtk-dnd-drag-threshold", &drag_threshold, NULL);
	541	}
	542
	543	return drag_threshold * 2;
	544	#endif
	545
	546	// MBN: ditto for icons
	547	case wxSYS_ICON_X: return 32;
	548	case wxSYS_ICON_Y: return 32;
	549
	550	case wxSYS_SCREEN_X:
	551	#if defined(__WXGTK20__) && GTK_CHECK_VERSION(2,2,0)
	552	if (window && !gtk_check_version(2,2,0))
	553	return gdk_screen_get_width(gdk_drawable_get_screen(window));
	554	else
	555	#endif
	556	return gdk_screen_width();
	557
	558	case wxSYS_SCREEN_Y:
	559	#if defined(__WXGTK20__) && GTK_CHECK_VERSION(2,2,0)
	560	if (window && !gtk_check_version(2,2,0))
	561	return gdk_screen_get_height(gdk_drawable_get_screen(window));
	562	else
	563	#endif
	564	return gdk_screen_height();
	565
	566	case wxSYS_HSCROLL_Y: return 15;
	567	case wxSYS_VSCROLL_X: return 15;
	568
	569	// a gtk1 implementation should be possible too if gtk2 efficiency/convenience functions aren't used
	570	#ifdef __WXGTK20__
	571	case wxSYS_CAPTION_Y:
	572	if (!window)
	573	// No realized window specified, and no implementation for that case yet.
	574	return -1;
	575
	576	// Check if wm supports frame extents - we can't know the caption height if it does not.
	577	#if GTK_CHECK_VERSION(2,2,0)
	578	if (!gtk_check_version(2,2,0))
	579	{
	580	if (!gdk_x11_screen_supports_net_wm_hint(
	581	gdk_drawable_get_screen(window),
	582	gdk_atom_intern("_NET_FRAME_EXTENTS", false) ) )
	583	return -1;
	584	}
	585	else
	586	#endif
	587	{
	588	if (!gdk_net_wm_supports(gdk_atom_intern("_NET_FRAME_EXTENTS", false)))
	589	return -1;
	590	}
	591
	592	wxASSERT_MSG( wxDynamicCast(win, wxTopLevelWindow),
	593	wxT("Asking for caption height of a non toplevel window") );
	594
	595	// Get the height of the top windowmanager border.
	596	// This is the titlebar in most cases. The titlebar might be elsewhere, and
	597	// we could check which is the thickest wm border to decide on which side the
	598	// titlebar is, but this might lead to interesting behaviours in used code.
	599	// Reconsider when we have a way to report to the user on which side it is.
	600
	601	Atom type;
	602	gint format;
	603	gulong nitems;
	604
	605	#if GTK_CHECK_VERSION(2,2,0)
	606	if (!gtk_check_version(2,2,0))
	607	{
	608	gulong bytes_after;
	609	success = (XGetWindowProperty (GDK_DISPLAY_XDISPLAY(gdk_drawable_get_display(window)),
	610	GDK_WINDOW_XWINDOW(window),
	611	gdk_x11_get_xatom_by_name_for_display (
	612	gdk_drawable_get_display(window),
	613	"_NET_FRAME_EXTENTS" ),
	614	0, // left, right, top, bottom, CARDINAL[4]/32
	615	G_MAXLONG, // size of long
	616	false, // do not delete property
	617	XA_CARDINAL, // 32 bit
	618	&type, &format, &nitems, &bytes_after, &data
	619	) == Success);
	620	}
	621	#endif
	622	if (success)
	623	{
	624	int caption_height = -1;
	625
	626	if ((type == XA_CARDINAL) && (format == 32) && (nitems >= 3) && (data))
	627	{
	628	long *borders;
	629	borders = (long*)data;
	630	caption_height = borders[2]; // top frame extent
	631	}
	632
	633	if (data)
	634	XFree(data);
	635
	636	return caption_height;
	637	}
	638
	639	// Try a default approach without a window pointer, if possible
	640	// ...
	641
	642	return -1;
	643	#endif // gtk2
	644
	645	case wxSYS_PENWINDOWS_PRESENT:
	646	// No MS Windows for Pen computing extension available in X11 based gtk+.
	647	return 0;
	648
	649	default:
	650	return -1; // metric is unknown
	651	}
	652	}
	653
	654	bool wxSystemSettingsNative::HasFeature(wxSystemFeature index)
	655	{
	656	switch (index)
	657	{
	658	case wxSYS_CAN_ICONIZE_FRAME:
	659	return FALSE;
	660	break;
	661	case wxSYS_CAN_DRAW_FRAME_DECORATIONS:
	662	return TRUE;
	663	break;
	664	default:
	665	return FALSE;
	666	}
	667	}