Add support for generating classes for menus

[wxWidgets.git] / src / gtk / settings.cpp

diff --git a/src/gtk/settings.cpp b/src/gtk/settings.cpp
index b3e40b850ba8f79633f865d1a11197e364ac17b7..bc6ee6a3c8911f3075879a4b70d9fcb680067e90 100644 (file)
--- a/src/gtk/settings.cpp
+++ b/src/gtk/settings.cpp
@@ -1,188 +1,656 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        settings.cpp
+// Name:        src/gtk/settings.cpp

 // Purpose:
 // Author:      Robert Roebling
 // Purpose:
 // Author:      Robert Roebling

-// Created:     01/02/97
-// Id:
-// Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
-// Licence:    wxWindows licence
+// 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"

 
 

-#ifdef __GNUG__
-#pragma implementation "settings.h"
+#include "wx/settings.h"
+
+#ifndef WX_PRECOMP
+    #include "wx/cmndata.h"

 #endif
 
 #endif
 

-#include "wx/settings.h"
+#include "wx/fontutil.h"
+#include "wx/toplevel.h"

 
 

-/*
-#define wxSYS_COLOUR_SCROLLBAR         0
-#define wxSYS_COLOUR_BACKGROUND        1
-#define wxSYS_COLOUR_ACTIVECAPTION     2
-#define wxSYS_COLOUR_INACTIVECAPTION   3
-#define wxSYS_COLOUR_MENU              4
-#define wxSYS_COLOUR_WINDOW            5
-#define wxSYS_COLOUR_WINDOWFRAME       6
-#define wxSYS_COLOUR_MENUTEXT          7
-#define wxSYS_COLOUR_WINDOWTEXT        8
-#define wxSYS_COLOUR_CAPTIONTEXT       9
-#define wxSYS_COLOUR_ACTIVEBORDER      10
-#define wxSYS_COLOUR_INACTIVEBORDER    11
-#define wxSYS_COLOUR_APPWORKSPACE      12
-#define wxSYS_COLOUR_HIGHLIGHT         13
-#define wxSYS_COLOUR_HIGHLIGHTTEXT     14
-#define wxSYS_COLOUR_BTNFACE           15
-#define wxSYS_COLOUR_BTNSHADOW         16
-#define wxSYS_COLOUR_GRAYTEXT          17
-#define wxSYS_COLOUR_BTNTEXT           18
-#define wxSYS_COLOUR_INACTIVECAPTIONTEXT 19
-#define wxSYS_COLOUR_BTNHIGHLIGHT      20
-
-#define wxSYS_COLOUR_3DDKSHADOW        21
-#define wxSYS_COLOUR_3DLIGHT           22
-#define wxSYS_COLOUR_INFOTEXT          23
-#define wxSYS_COLOUR_INFOBK            24
-
-#define wxSYS_COLOUR_DESKTOP           wxSYS_COLOUR_BACKGROUND
-#define wxSYS_COLOUR_3DFACE            wxSYS_COLOUR_BTNFACE
-#define wxSYS_COLOUR_3DSHADOW          wxSYS_COLOUR_BTNSHADOW
-#define wxSYS_COLOUR_3DHIGHLIGHT       wxSYS_COLOUR_BTNHIGHLIGHT
-#define wxSYS_COLOUR_3DHILIGHT         wxSYS_COLOUR_BTNHIGHLIGHT
-#define wxSYS_COLOUR_BTNHILIGHT        wxSYS_COLOUR_BTNHIGHLIGHT
-*/
+// Using gtk_list_new, which is deprecated since GTK2
+// Using gtk_object_sink, which is deprecated since GTK+-2.9.0
+#ifdef GTK_DISABLE_DEPRECATED
+#undef GTK_DISABLE_DEPRECATED
+#endif
+
+#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)))
 
 
 #define SHIFT (8*(sizeof(short int)-sizeof(char)))
 

-wxColour *g_systemBtnFaceColour      = (wxColour *) NULL;
-wxColour *g_systemBtnShadowColour    = (wxColour *) NULL;
-wxColour *g_systemBtnHighlightColour = (wxColour *) NULL;
-wxColour *g_systemHighlightColour    = (wxColour *) NULL;
+// ----------------------------------------------------------------------------
+// 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 *g_systemFont = (wxFont *) NULL;
+    wxFont m_fontSystem;
+};

 
 

-void wxSystemSettings::Done() {
-  wxDELETE(g_systemBtnFaceColour);
-  wxDELETE(g_systemBtnShadowColour);
-  wxDELETE(g_systemBtnHighlightColour);
-  wxDELETE(g_systemHighlightColour);
-  wxDELETE(g_systemFont);
-}
+static wxSystemObjects gs_objects;

 
 

-wxColour wxSystemSettings::GetSystemColour( int index )
+// ----------------------------------------------------------------------------
+// wxSystemSettings implementation
+// ----------------------------------------------------------------------------
+
+// kind of widget to use in GetColourFromGTKWidget
+enum wxGtkWidgetType

 {
 {

-  switch (index)
-  {
-    case wxSYS_COLOUR_SCROLLBAR:
-    case wxSYS_COLOUR_BACKGROUND:
-    case wxSYS_COLOUR_ACTIVECAPTION:
-    case wxSYS_COLOUR_INACTIVECAPTION:
-    case wxSYS_COLOUR_MENU:
-    case wxSYS_COLOUR_WINDOW:
-    case wxSYS_COLOUR_WINDOWFRAME:
-    case wxSYS_COLOUR_ACTIVEBORDER:
-    case wxSYS_COLOUR_INACTIVEBORDER:
-    case wxSYS_COLOUR_BTNFACE:
-    {
-      GtkStyle *style = gtk_widget_get_default_style();
-      if (!g_systemBtnFaceColour)
-      {
-        g_systemBtnFaceColour = 
-         new wxColour( style->bg[0].red >> SHIFT,
-                       style->bg[0].green >> SHIFT,
-                       style->bg[0].blue >> SHIFT );
-      }
-      return *g_systemBtnFaceColour;
-    }
-    case wxSYS_COLOUR_BTNSHADOW:
-    {
-      GtkStyle *style = gtk_widget_get_default_style();
-      if (!g_systemBtnShadowColour)
-      {
-        g_systemBtnShadowColour = 
-         new wxColour( style->dark[0].red >> SHIFT,
-                       style->dark[0].green >> SHIFT,
-                       style->dark[0].blue >> SHIFT );
-      }
-      return *g_systemBtnShadowColour;
-    }
-    case wxSYS_COLOUR_GRAYTEXT:
-    case wxSYS_COLOUR_BTNHIGHLIGHT:
-    {
-      GtkStyle *style = gtk_widget_get_default_style();
-      if (!g_systemBtnHighlightColour)
-      {
-        g_systemBtnHighlightColour = 
-         new wxColour( style->light[0].red >> SHIFT,
-                       style->light[0].green >> SHIFT,
-                       style->light[0].blue >> SHIFT );
-      }
-      return *g_systemBtnHighlightColour;
-    }
-    case wxSYS_COLOUR_HIGHLIGHT:
+    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 )

     {
     {

-      GtkStyle *style = gtk_widget_get_default_style();
-      if (!g_systemHighlightColour)
-      {
-        g_systemHighlightColour = 
-         new wxColour( style->bg[GTK_STATE_SELECTED].red >> SHIFT,
-                       style->bg[GTK_STATE_SELECTED].green >> SHIFT,
-                       style->bg[GTK_STATE_SELECTED].blue >> SHIFT );
-      }
-      return *g_systemHighlightColour;
+        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();

     }
     }

-    case wxSYS_COLOUR_MENUTEXT:
-    case wxSYS_COLOUR_WINDOWTEXT:
-    case wxSYS_COLOUR_CAPTIONTEXT:
-    case wxSYS_COLOUR_INACTIVECAPTIONTEXT:
-    case wxSYS_COLOUR_INFOTEXT:
+
+    GtkStyle *def = gtk_rc_get_style( widget );
+    if ( !def )
+        def = gtk_widget_get_default_style();
+
+    bool ok;
+    if ( def )

     {
     {

-      return *wxBLACK;
+        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;

     }
     }

-    case wxSYS_COLOUR_HIGHLIGHTTEXT:
+    else

     {
     {

-      return *wxWHITE;
+        ok = false;

     }
     }

-    case wxSYS_COLOUR_INFOBK:
-    case wxSYS_COLOUR_APPWORKSPACE:
+
+    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)

     {
     {

-      return *wxWHITE;    // ?
+        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;
+
+    return *wxWHITE;

 }
 
 }
 

-wxFont wxSystemSettings::GetSystemFont( int index ) 
+wxFont wxSystemSettingsNative::GetFont( wxSystemFont index )

 {
 {

-  switch (index)
-  {
-    case wxSYS_OEM_FIXED_FONT:
-    case wxSYS_ANSI_FIXED_FONT:
-    case wxSYS_SYSTEM_FIXED_FONT:
+    switch (index)

     {
     {

-      return *wxNORMAL_FONT;
+        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())
+            {
+                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 );
+            }
+            return gs_objects.m_fontSystem;
+        }
+
+        default:
+            return wxNullFont;

     }
     }

-    case wxSYS_ANSI_VAR_FONT:
-    case wxSYS_SYSTEM_FONT:
-    case wxSYS_DEVICE_DEFAULT_FONT:
-    case wxSYS_DEFAULT_GUI_FONT:
+}
+
+int wxSystemSettingsNative::GetMetric( wxSystemMetric index, wxWindow* win )
+{
+    bool success = false;
+
+    guchar *data = NULL;
+    GdkWindow *window = NULL;
+    if(win && GTK_WIDGET_REALIZED(win->GetHandle()))
+        window = win->GetHandle()->window;
+
+    switch (index)

     {
     {

-      if (!g_systemFont)
-        g_systemFont = new wxFont( "-adobe-helvetica-medium-r-normal--*-120-*-*-*-*-*-*" );
-      return *g_systemFont;
-    }
-  }
+        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
+
+        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);
+            }

 
 

-  return wxNullFont;
+            return drag_threshold * 2;
+
+        // 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.
+
+            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;
+
+        case wxSYS_PENWINDOWS_PRESENT:
+            // No MS Windows for Pen computing extension available in X11 based gtk+.
+            return 0;
+
+        default:
+            return -1;   // metric is unknown
+    }

 }
 
 }
 

-int wxSystemSettings::GetSystemMetric( int index )
+bool wxSystemSettingsNative::HasFeature(wxSystemFeature index)

 {
 {

-  switch (index)
-  {
-    case wxSYS_SCREEN_X:
-      return gdk_screen_width();
-    case wxSYS_SCREEN_Y:
-      return gdk_screen_height();
-  }
-  return 0;
+    switch (index)
+    {
+        case wxSYS_CAN_ICONIZE_FRAME:
+            return false;
+
+        case wxSYS_CAN_DRAW_FRAME_DECORATIONS:
+            return true;
+
+        default:
+            return false;
+    }

 }
 }