src/gtk/settings.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        src/gtk/settings.cpp
// Purpose:
// Author:      Robert Roebling
// Modified by: Mart Raudsepp (GetMetric)
// Id:          $Id$
// 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/cmndata.h"
    #include "wx/toplevel.h"
#endif

#include "wx/fontutil.h"

#include <gtk/gtkversion.h>
#if GTK_CHECK_VERSION(2, 9, 0)
    // gtk_object_sink
    #undef GTK_DISABLE_DEPRECATED
#endif
#include <gtk/gtk.h>
#include <gdk/gdkx.h>

#include <X11/Xatom.h>

// ----------------------------------------------------------------------------
// 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
static bool GetColourFromGTKWidget(GdkColor& gdkColor,
                                   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_tree_view_new_with_model(
                (GtkTreeModel*)gtk_list_store_new(1, G_TYPE_INT));
            break;

        case wxGTK_MENUITEM:
            widget = gtk_menu_item_new();
    }

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

    const bool ok = def != NULL;
    if (ok)
    {
        switch ( colour )
        {
            default:
                wxFAIL_MSG( _T("unexpected GTK colour type") );
                // fall through

            case wxGTK_FG:
                gdkColor = def->fg[state];
                break;

            case wxGTK_BG:
                gdkColor = def->bg[state];
                break;

            case wxGTK_BASE:
                gdkColor = def->base[state];
                break;
        }
    }

    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);
    c = tooltips->tip_window->style->fg[GTK_STATE_NORMAL];
    gs_objects.m_colTooltipText = wxColor(c);
#if GTK_CHECK_VERSION(2, 9, 0)
    if (gtk_check_version(2, 9, 0) == NULL)
        g_object_ref_sink(tooltips);
    else
#endif
    {
        gtk_object_sink((GtkObject*)tooltips);
    }
}

wxColour wxSystemSettingsNative::GetColour( wxSystemColour index )
{
    wxColor color;
    GdkColor gdkColor;
    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())
            {
                gdkColor.red =
                gdkColor.green = 0;
                gdkColor.blue = 0x9c40;
                GetColourFromGTKWidget(gdkColor);
                gs_objects.m_colBtnFace = wxColor(gdkColor);
            }
            color = gs_objects.m_colBtnFace;
            break;

        case wxSYS_COLOUR_WINDOW:
            color = *wxWHITE;
            break;

        case wxSYS_COLOUR_3DDKSHADOW:
            color = *wxBLACK;
            break;

        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() * 2 / 3),
                            (unsigned char) (faceColour.Green() * 2 / 3),
                            (unsigned char) (faceColour.Blue() * 2 / 3));
            }
            color = gs_objects.m_colBtnShadow;
            break;

        case wxSYS_COLOUR_3DHIGHLIGHT:
        //case wxSYS_COLOUR_BTNHIGHLIGHT:
            color = *wxWHITE;
            break;

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

        case wxSYS_COLOUR_LISTBOX:
            if (!gs_objects.m_colListBox.Ok())
            {
                if ( GetColourFromGTKWidget(gdkColor,
                                            wxGTK_LIST,
                                            GTK_STATE_NORMAL,
                                            wxGTK_BASE) )
                {
                    gs_objects.m_colListBox = wxColour(gdkColor);
                }
                else
                {
                    gs_objects.m_colListBox = *wxWHITE;
                }
            }
            color = gs_objects.m_colListBox;
            break;

        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())
            {
                gdkColor.red =
                gdkColor.green =
                gdkColor.blue = 0;
                GetColourFromGTKWidget(
                    gdkColor, wxGTK_BUTTON, GTK_STATE_NORMAL, wxGTK_FG);
                gs_objects.m_colBtnText = wxColour(gdkColor);
            }
            color = gs_objects.m_colBtnText;
            break;

        case wxSYS_COLOUR_INFOBK:
            if (!gs_objects.m_colTooltip.Ok()) {
                GetTooltipColors();
            }
            color = gs_objects.m_colTooltip;
            break;

        case wxSYS_COLOUR_INFOTEXT:
            if (!gs_objects.m_colTooltipText.Ok()) {
                GetTooltipColors();
            }
            color = gs_objects.m_colTooltipText;
            break;

        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 = *wxBLACK;
                else
                    gs_objects.m_colHighlightText = *wxWHITE;
            }
            color = gs_objects.m_colHighlightText;
            break;

        case wxSYS_COLOUR_APPWORKSPACE:
            color = *wxWHITE;    // ?
            break;

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

        case wxSYS_COLOUR_HOTLIGHT:
        case wxSYS_COLOUR_GRADIENTACTIVECAPTION:
        case wxSYS_COLOUR_GRADIENTINACTIVECAPTION:
            // TODO
            color = *wxBLACK;
            break;

        case wxSYS_COLOUR_MAX:
        default:
            wxFAIL_MSG( _T("unknown system colour index") );
            color = *wxWHITE;
            break;
    }

    return color;
}

wxFont wxSystemSettingsNative::GetFont( wxSystemFont index )
{
    wxFont font;
    switch (index)
    {
        case wxSYS_OEM_FIXED_FONT:
        case wxSYS_ANSI_FIXED_FONT:
        case wxSYS_SYSTEM_FIXED_FONT:
            font = *wxNORMAL_FONT;
            break;

        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())
            {
                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 );
            }
            font = gs_objects.m_fontSystem;
            break;

        default:
            break;
    }
    return font;
}

static bool wxXGetWindowProperty(GdkWindow* window, Atom& type, int& format, gulong& nitems, guchar*& data)
{
    bool success = false;
#if GTK_CHECK_VERSION(2, 2, 0)
    if (gtk_check_version(2, 2, 0) == NULL)
    {
        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
    return success;
}

int wxSystemSettingsNative::GetMetric( wxSystemMetric index, wxWindow* win )
{
    guchar *data = NULL;
    Atom type;
    int format;
    gulong nitems;
    GdkWindow *window = NULL;
    if(win && GTK_WIDGET_REALIZED(win->GetHandle()))
        window = win->GetHandle()->window;

    switch (index)
    {
        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.
                    if (wxXGetWindowProperty(window, type, format, nitems, data))
                    {
                        int border_return = -1;

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

                        if (data)
                            XFree(data);

                        return border_return;
                    }
                }
            }

            return -1; // no window specified

        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;

        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;

        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);
            }

            // The correct thing here would be to double the value
            // since that is what the API wants. But the values
            // are much bigger under GNOME than under Windows and
            // just seem to much in many cases to be useful.
            // drag_threshold *= 2;

            return drag_threshold;

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

        case wxSYS_SCREEN_X:
#if 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 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;

        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.
            if (wxXGetWindowProperty(window, type, format, nitems, data))
            {
                int caption_height = -1;

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

                if (data)
                    XFree(data);

                return caption_height;
            }

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

            return -1;

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