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_object_sink((GtkObject*)widget);

    return ok;
}

static void GetTooltipColors()
{
    GtkTooltips* tooltips = gtk_tooltips_new();
    gtk_tooltips_force_window(tooltips);

    // FIXME: In 2.11.6 tip_window is private and always NULL so
    // we need to do something different if there is no window.
    // See https://sourceforge.net/tracker/index.php?func=detail&aid=1767485&group_id=9863&atid=109863
    if (tooltips->tip_window)
    {
        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);
    }
    else
    {
        gs_objects.m_colTooltipText = wxColour(255, 255, 128); // FIXME
    }

    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_object_sink((GtkObject*)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_object_sink((GtkObject*)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
	139	// FIXME: In 2.11.6 tip_window is private and always NULL so
	140	// we need to do something different if there is no window.
	141	// See https://sourceforge.net/tracker/index.php?func=detail&aid=1767485&group_id=9863&atid=109863
	142	if (tooltips->tip_window)
	143	{
	144	gtk_widget_ensure_style(tooltips->tip_window);
	145	GdkColor c = tooltips->tip_window->style->bg[GTK_STATE_NORMAL];
	146	gs_objects.m_colTooltip = wxColor(c);
	147	c = tooltips->tip_window->style->fg[GTK_STATE_NORMAL];
	148	gs_objects.m_colTooltipText = wxColor(c);
	149	}
	150	else
	151	{
	152	gs_objects.m_colTooltipText = wxColour(255, 255, 128); // FIXME
	153	}
	154
	155	gtk_object_sink((GtkObject*)tooltips);
	156	}
	157
	158	wxColour wxSystemSettingsNative::GetColour( wxSystemColour index )
	159	{
	160	wxColor color;
	161	GdkColor gdkColor;
	162	switch (index)
	163	{
	164	case wxSYS_COLOUR_SCROLLBAR:
	165	case wxSYS_COLOUR_BACKGROUND:
	166	case wxSYS_COLOUR_INACTIVECAPTION:
	167	case wxSYS_COLOUR_MENU:
	168	case wxSYS_COLOUR_WINDOWFRAME:
	169	case wxSYS_COLOUR_ACTIVEBORDER:
	170	case wxSYS_COLOUR_INACTIVEBORDER:
	171	case wxSYS_COLOUR_BTNFACE:
	172	case wxSYS_COLOUR_MENUBAR:
	173	case wxSYS_COLOUR_3DLIGHT:
	174	if (!gs_objects.m_colBtnFace.Ok())
	175	{
	176	gdkColor.red =
	177	gdkColor.green = 0;
	178	gdkColor.blue = 0x9c40;
	179	GetColourFromGTKWidget(gdkColor);
	180	gs_objects.m_colBtnFace = wxColor(gdkColor);
	181	}
	182	color = gs_objects.m_colBtnFace;
	183	break;
	184
	185	case wxSYS_COLOUR_WINDOW:
	186	color = *wxWHITE;
	187	break;
	188
	189	case wxSYS_COLOUR_3DDKSHADOW:
	190	color = *wxBLACK;
	191	break;
	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() * 2 / 3),
	201	(unsigned char) (faceColour.Green() * 2 / 3),
	202	(unsigned char) (faceColour.Blue() * 2 / 3));
	203	}
	204	color = gs_objects.m_colBtnShadow;
	205	break;
	206
	207	case wxSYS_COLOUR_3DHIGHLIGHT:
	208	//case wxSYS_COLOUR_BTNHIGHLIGHT:
	209	color = *wxWHITE;
	210	break;
	211
	212	case wxSYS_COLOUR_HIGHLIGHT:
	213	if (!gs_objects.m_colHighlight.Ok())
	214	{
	215	gdkColor.red =
	216	gdkColor.green = 0;
	217	gdkColor.blue = 0x9c40;
	218	GetColourFromGTKWidget(
	219	gdkColor, wxGTK_BUTTON, GTK_STATE_SELECTED);
	220	gs_objects.m_colHighlight = wxColour(gdkColor);
	221	}
	222	color = gs_objects.m_colHighlight;
	223	break;
	224
	225	case wxSYS_COLOUR_LISTBOX:
	226	if (!gs_objects.m_colListBox.Ok())
	227	{
	228	if ( GetColourFromGTKWidget(gdkColor,
	229	wxGTK_LIST,
	230	GTK_STATE_NORMAL,
	231	wxGTK_BASE) )
	232	{
	233	gs_objects.m_colListBox = wxColour(gdkColor);
	234	}
	235	else
	236	{
	237	gs_objects.m_colListBox = *wxWHITE;
	238	}
	239	}
	240	color = gs_objects.m_colListBox;
	241	break;
	242
	243	case wxSYS_COLOUR_MENUTEXT:
	244	case wxSYS_COLOUR_WINDOWTEXT:
	245	case wxSYS_COLOUR_CAPTIONTEXT:
	246	case wxSYS_COLOUR_INACTIVECAPTIONTEXT:
	247	case wxSYS_COLOUR_BTNTEXT:
	248	if (!gs_objects.m_colBtnText.Ok())
	249	{
	250	gdkColor.red =
	251	gdkColor.green =
	252	gdkColor.blue = 0;
	253	GetColourFromGTKWidget(
	254	gdkColor, wxGTK_BUTTON, GTK_STATE_NORMAL, wxGTK_FG);
	255	gs_objects.m_colBtnText = wxColour(gdkColor);
	256	}
	257	color = gs_objects.m_colBtnText;
	258	break;
	259
	260	case wxSYS_COLOUR_INFOBK:
	261	if (!gs_objects.m_colTooltip.Ok()) {
	262	GetTooltipColors();
	263	}
	264	color = gs_objects.m_colTooltip;
	265	break;
	266
	267	case wxSYS_COLOUR_INFOTEXT:
	268	if (!gs_objects.m_colTooltipText.Ok()) {
	269	GetTooltipColors();
	270	}
	271	color = gs_objects.m_colTooltipText;
	272	break;
	273
	274	case wxSYS_COLOUR_HIGHLIGHTTEXT:
	275	if (!gs_objects.m_colHighlightText.Ok())
	276	{
	277	wxColour hclr = GetColour(wxSYS_COLOUR_HIGHLIGHT);
	278	if (hclr.Red() > 200 && hclr.Green() > 200 && hclr.Blue() > 200)
	279	gs_objects.m_colHighlightText = *wxBLACK;
	280	else
	281	gs_objects.m_colHighlightText = *wxWHITE;
	282	}
	283	color = gs_objects.m_colHighlightText;
	284	break;
	285
	286	case wxSYS_COLOUR_APPWORKSPACE:
	287	color = *wxWHITE; // ?
	288	break;
	289
	290	case wxSYS_COLOUR_ACTIVECAPTION:
	291	case wxSYS_COLOUR_MENUHILIGHT:
	292	if (!gs_objects.m_colMenuItemHighlight.Ok())
	293	{
	294	gdkColor.red =
	295	gdkColor.green =
	296	gdkColor.blue = 0;
	297	GetColourFromGTKWidget(
	298	gdkColor, wxGTK_MENUITEM, GTK_STATE_SELECTED, wxGTK_BG);
	299	gs_objects.m_colMenuItemHighlight = wxColour(gdkColor);
	300	}
	301	color = gs_objects.m_colMenuItemHighlight;
	302	break;
	303
	304	case wxSYS_COLOUR_HOTLIGHT:
	305	case wxSYS_COLOUR_GRADIENTACTIVECAPTION:
	306	case wxSYS_COLOUR_GRADIENTINACTIVECAPTION:
	307	// TODO
	308	color = *wxBLACK;
	309	break;
	310
	311	case wxSYS_COLOUR_MAX:
	312	default:
	313	wxFAIL_MSG( _T("unknown system colour index") );
	314	color = *wxWHITE;
	315	break;
	316	}
	317
	318	return color;
	319	}
	320
	321	wxFont wxSystemSettingsNative::GetFont( wxSystemFont index )
	322	{
	323	wxFont font;
	324	switch (index)
	325	{
	326	case wxSYS_OEM_FIXED_FONT:
	327	case wxSYS_ANSI_FIXED_FONT:
	328	case wxSYS_SYSTEM_FIXED_FONT:
	329	font = *wxNORMAL_FONT;
	330	break;
	331
	332	case wxSYS_ANSI_VAR_FONT:
	333	case wxSYS_SYSTEM_FONT:
	334	case wxSYS_DEVICE_DEFAULT_FONT:
	335	case wxSYS_DEFAULT_GUI_FONT:
	336	if (!gs_objects.m_fontSystem.Ok())
	337	{
	338	GtkWidget *widget = gtk_button_new();
	339	GtkStyle *def = gtk_rc_get_style( widget );
	340	if ( !def \|\| !def->font_desc )
	341	def = gtk_widget_get_default_style();
	342	if ( def && def->font_desc )
	343	{
	344	wxNativeFontInfo info;
	345	info.description =
	346	pango_font_description_copy(def->font_desc);
	347	gs_objects.m_fontSystem = wxFont(info);
	348	}
	349	else
	350	{
	351	GtkSettings *settings = gtk_settings_get_default();
	352	gchar *font_name = NULL;
	353	g_object_get ( settings,
	354	"gtk-font-name",
	355	&font_name,
	356	NULL);
	357	if (!font_name)
	358	gs_objects.m_fontSystem = wxFont( 12, wxSWISS, wxNORMAL, wxNORMAL );
	359	else
	360	gs_objects.m_fontSystem = wxFont(wxString::FromAscii(font_name));
	361	g_free (font_name);
	362	}
	363	gtk_object_sink((GtkObject*)widget);
	364	}
	365	font = gs_objects.m_fontSystem;
	366	break;
	367
	368	default:
	369	break;
	370	}
	371	return font;
	372	}
	373
	374	static bool wxXGetWindowProperty(GdkWindow* window, Atom& type, int& format, gulong& nitems, guchar*& data)
	375	{
	376	bool success = false;
	377	#if GTK_CHECK_VERSION(2, 2, 0)
	378	if (gtk_check_version(2, 2, 0) == NULL)
	379	{
	380	gulong bytes_after;
	381	success = XGetWindowProperty(
	382	GDK_DISPLAY_XDISPLAY(gdk_drawable_get_display(window)),
	383	GDK_WINDOW_XWINDOW(window),
	384	gdk_x11_get_xatom_by_name_for_display(
	385	gdk_drawable_get_display(window),
	386	"_NET_FRAME_EXTENTS"),
	387	0, // left, right, top, bottom, CARDINAL[4]/32
	388	G_MAXLONG, // size of long
	389	false, // do not delete property
	390	XA_CARDINAL, // 32 bit
	391	&type, &format, &nitems, &bytes_after, &data
	392	) == Success;
	393	}
	394	#endif
	395	return success;
	396	}
	397
	398	int wxSystemSettingsNative::GetMetric( wxSystemMetric index, wxWindow* win )
	399	{
	400	guchar *data = NULL;
	401	Atom type;
	402	int format;
	403	gulong nitems;
	404	GdkWindow *window = NULL;
	405	if(win && GTK_WIDGET_REALIZED(win->GetHandle()))
	406	window = win->GetHandle()->window;
	407
	408	switch (index)
	409	{
	410	case wxSYS_BORDER_X:
	411	case wxSYS_BORDER_Y:
	412	case wxSYS_EDGE_X:
	413	case wxSYS_EDGE_Y:
	414	case wxSYS_FRAMESIZE_X:
	415	case wxSYS_FRAMESIZE_Y:
	416	// If a window is specified/realized, and it is a toplevel window, we can query from wm.
	417	// The returned border thickness is outside the client area in that case.
	418	if (window)
	419	{
	420	wxTopLevelWindow *tlw = wxDynamicCast(win, wxTopLevelWindow);
	421	if (!tlw)
	422	return -1; // not a tlw, not sure how to approach
	423	else
	424	{
	425	// Check if wm supports frame extents - we can't know
	426	// the border widths if it does not.
	427	#if GTK_CHECK_VERSION(2,2,0)
	428	if (!gtk_check_version(2,2,0))
	429	{
	430	if (!gdk_x11_screen_supports_net_wm_hint(
	431	gdk_drawable_get_screen(window),
	432	gdk_atom_intern("_NET_FRAME_EXTENTS", false) ) )
	433	return -1;
	434	}
	435	else
	436	#endif
	437	{
	438	if (!gdk_net_wm_supports(gdk_atom_intern("_NET_FRAME_EXTENTS", false)))
	439	return -1;
	440	}
	441
	442	// Get the frame extents from the windowmanager.
	443	// In most cases the top extent is the titlebar, so we use the bottom extent
	444	// for the heights.
	445	if (wxXGetWindowProperty(window, type, format, nitems, data))
	446	{
	447	int border_return = -1;
	448
	449	if ((type == XA_CARDINAL) && (format == 32) && (nitems >= 4) && (data))
	450	{
	451	switch(index)
	452	{
	453	case wxSYS_BORDER_X:
	454	case wxSYS_EDGE_X:
	455	case wxSYS_FRAMESIZE_X:
	456	border_return = int(data[1]); // width of right extent
	457	break;
	458	default:
	459	border_return = int(data[3]); // height of bottom extent
	460	break;
	461	}
	462	}
	463
	464	if (data)
	465	XFree(data);
	466
	467	return border_return;
	468	}
	469	}
	470	}
	471
	472	return -1; // no window specified
	473
	474	case wxSYS_CURSOR_X:
	475	case wxSYS_CURSOR_Y:
	476	#ifdef __WXGTK24__
	477	if (!gtk_check_version(2,4,0))
	478	{
	479	if (window)
	480	return gdk_display_get_default_cursor_size(gdk_drawable_get_display(window));
	481	else
	482	return gdk_display_get_default_cursor_size(gdk_display_get_default());
	483	}
	484	else
	485	#endif
	486	return 16;
	487
	488	case wxSYS_DCLICK_X:
	489	case wxSYS_DCLICK_Y:
	490	gint dclick_distance;
	491	#if GTK_CHECK_VERSION(2,2,0)
	492	if (window && !gtk_check_version(2,2,0))
	493	g_object_get(gtk_settings_get_for_screen(gdk_drawable_get_screen(window)),
	494	"gtk-double-click-distance", &dclick_distance, NULL);
	495	else
	496	#endif
	497	g_object_get(gtk_settings_get_default(),
	498	"gtk-double-click-distance", &dclick_distance, NULL);
	499
	500	return dclick_distance * 2;
	501
	502	case wxSYS_DRAG_X:
	503	case wxSYS_DRAG_Y:
	504	gint drag_threshold;
	505	#if GTK_CHECK_VERSION(2,2,0)
	506	if (window && !gtk_check_version(2,2,0))
	507	{
	508	g_object_get(
	509	gtk_settings_get_for_screen(gdk_drawable_get_screen(window)),
	510	"gtk-dnd-drag-threshold",
	511	&drag_threshold, NULL);
	512	}
	513	else
	514	#endif
	515	{
	516	g_object_get(gtk_settings_get_default(),
	517	"gtk-dnd-drag-threshold", &drag_threshold, NULL);
	518	}
	519
	520	// The correct thing here would be to double the value
	521	// since that is what the API wants. But the values
	522	// are much bigger under GNOME than under Windows and
	523	// just seem to much in many cases to be useful.
	524	// drag_threshold *= 2;
	525
	526	return drag_threshold;
	527
	528	// MBN: ditto for icons
	529	case wxSYS_ICON_X: return 32;
	530	case wxSYS_ICON_Y: return 32;
	531
	532	case wxSYS_SCREEN_X:
	533	#if GTK_CHECK_VERSION(2,2,0)
	534	if (window && !gtk_check_version(2,2,0))
	535	return gdk_screen_get_width(gdk_drawable_get_screen(window));
	536	else
	537	#endif
	538	return gdk_screen_width();
	539
	540	case wxSYS_SCREEN_Y:
	541	#if GTK_CHECK_VERSION(2,2,0)
	542	if (window && !gtk_check_version(2,2,0))
	543	return gdk_screen_get_height(gdk_drawable_get_screen(window));
	544	else
	545	#endif
	546	return gdk_screen_height();
	547
	548	case wxSYS_HSCROLL_Y: return 15;
	549	case wxSYS_VSCROLL_X: return 15;
	550
	551	case wxSYS_CAPTION_Y:
	552	if (!window)
	553	// No realized window specified, and no implementation for that case yet.
	554	return -1;
	555
	556	// Check if wm supports frame extents - we can't know the caption height if it does not.
	557	#if GTK_CHECK_VERSION(2,2,0)
	558	if (!gtk_check_version(2,2,0))
	559	{
	560	if (!gdk_x11_screen_supports_net_wm_hint(
	561	gdk_drawable_get_screen(window),
	562	gdk_atom_intern("_NET_FRAME_EXTENTS", false) ) )
	563	return -1;
	564	}
	565	else
	566	#endif
	567	{
	568	if (!gdk_net_wm_supports(gdk_atom_intern("_NET_FRAME_EXTENTS", false)))
	569	return -1;
	570	}
	571
	572	wxASSERT_MSG( wxDynamicCast(win, wxTopLevelWindow),
	573	wxT("Asking for caption height of a non toplevel window") );
	574
	575	// Get the height of the top windowmanager border.
	576	// This is the titlebar in most cases. The titlebar might be elsewhere, and
	577	// we could check which is the thickest wm border to decide on which side the
	578	// titlebar is, but this might lead to interesting behaviours in used code.
	579	// Reconsider when we have a way to report to the user on which side it is.
	580	if (wxXGetWindowProperty(window, type, format, nitems, data))
	581	{
	582	int caption_height = -1;
	583
	584	if ((type == XA_CARDINAL) && (format == 32) && (nitems >= 3) && (data))
	585	{
	586	caption_height = int(data[2]); // top frame extent
	587	}
	588
	589	if (data)
	590	XFree(data);
	591
	592	return caption_height;
	593	}
	594
	595	// Try a default approach without a window pointer, if possible
	596	// ...
	597
	598	return -1;
	599
	600	case wxSYS_PENWINDOWS_PRESENT:
	601	// No MS Windows for Pen computing extension available in X11 based gtk+.
	602	return 0;
	603
	604	default:
	605	return -1; // metric is unknown
	606	}
	607	}
	608
	609	bool wxSystemSettingsNative::HasFeature(wxSystemFeature index)
	610	{
	611	switch (index)
	612	{
	613	case wxSYS_CAN_ICONIZE_FRAME:
	614	return false;
	615
	616	case wxSYS_CAN_DRAW_FRAME_DECORATIONS:
	617	return true;
	618
	619	default:
	620	return false;
	621	}
	622	}