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);
    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);
    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	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	gtk_object_sink((GtkObject*)tooltips);
	144	}
	145
	146	wxColour wxSystemSettingsNative::GetColour( wxSystemColour index )
	147	{
	148	wxColor color;
	149	GdkColor gdkColor;
	150	switch (index)
	151	{
	152	case wxSYS_COLOUR_SCROLLBAR:
	153	case wxSYS_COLOUR_BACKGROUND:
	154	case wxSYS_COLOUR_INACTIVECAPTION:
	155	case wxSYS_COLOUR_MENU:
	156	case wxSYS_COLOUR_WINDOWFRAME:
	157	case wxSYS_COLOUR_ACTIVEBORDER:
	158	case wxSYS_COLOUR_INACTIVEBORDER:
	159	case wxSYS_COLOUR_BTNFACE:
	160	case wxSYS_COLOUR_MENUBAR:
	161	case wxSYS_COLOUR_3DLIGHT:
	162	if (!gs_objects.m_colBtnFace.Ok())
	163	{
	164	gdkColor.red =
	165	gdkColor.green = 0;
	166	gdkColor.blue = 0x9c40;
	167	GetColourFromGTKWidget(gdkColor);
	168	gs_objects.m_colBtnFace = wxColor(gdkColor);
	169	}
	170	color = gs_objects.m_colBtnFace;
	171	break;
	172
	173	case wxSYS_COLOUR_WINDOW:
	174	color = *wxWHITE;
	175	break;
	176
	177	case wxSYS_COLOUR_3DDKSHADOW:
	178	color = *wxBLACK;
	179	break;
	180
	181	case wxSYS_COLOUR_GRAYTEXT:
	182	case wxSYS_COLOUR_BTNSHADOW:
	183	//case wxSYS_COLOUR_3DSHADOW:
	184	if (!gs_objects.m_colBtnShadow.Ok())
	185	{
	186	wxColour faceColour(GetColour(wxSYS_COLOUR_3DFACE));
	187	gs_objects.m_colBtnShadow =
	188	wxColour((unsigned char) (faceColour.Red() * 2 / 3),
	189	(unsigned char) (faceColour.Green() * 2 / 3),
	190	(unsigned char) (faceColour.Blue() * 2 / 3));
	191	}
	192	color = gs_objects.m_colBtnShadow;
	193	break;
	194
	195	case wxSYS_COLOUR_3DHIGHLIGHT:
	196	//case wxSYS_COLOUR_BTNHIGHLIGHT:
	197	color = *wxWHITE;
	198	break;
	199
	200	case wxSYS_COLOUR_HIGHLIGHT:
	201	if (!gs_objects.m_colHighlight.Ok())
	202	{
	203	gdkColor.red =
	204	gdkColor.green = 0;
	205	gdkColor.blue = 0x9c40;
	206	GetColourFromGTKWidget(
	207	gdkColor, wxGTK_BUTTON, GTK_STATE_SELECTED);
	208	gs_objects.m_colHighlight = wxColour(gdkColor);
	209	}
	210	color = gs_objects.m_colHighlight;
	211	break;
	212
	213	case wxSYS_COLOUR_LISTBOX:
	214	if (!gs_objects.m_colListBox.Ok())
	215	{
	216	if ( GetColourFromGTKWidget(gdkColor,
	217	wxGTK_LIST,
	218	GTK_STATE_NORMAL,
	219	wxGTK_BASE) )
	220	{
	221	gs_objects.m_colListBox = wxColour(gdkColor);
	222	}
	223	else
	224	{
	225	gs_objects.m_colListBox = *wxWHITE;
	226	}
	227	}
	228	color = gs_objects.m_colListBox;
	229	break;
	230
	231	case wxSYS_COLOUR_MENUTEXT:
	232	case wxSYS_COLOUR_WINDOWTEXT:
	233	case wxSYS_COLOUR_CAPTIONTEXT:
	234	case wxSYS_COLOUR_INACTIVECAPTIONTEXT:
	235	case wxSYS_COLOUR_BTNTEXT:
	236	if (!gs_objects.m_colBtnText.Ok())
	237	{
	238	gdkColor.red =
	239	gdkColor.green =
	240	gdkColor.blue = 0;
	241	GetColourFromGTKWidget(
	242	gdkColor, wxGTK_BUTTON, GTK_STATE_NORMAL, wxGTK_FG);
	243	gs_objects.m_colBtnText = wxColour(gdkColor);
	244	}
	245	color = gs_objects.m_colBtnText;
	246	break;
	247
	248	case wxSYS_COLOUR_INFOBK:
	249	if (!gs_objects.m_colTooltip.Ok()) {
	250	GetTooltipColors();
	251	}
	252	color = gs_objects.m_colTooltip;
	253	break;
	254
	255	case wxSYS_COLOUR_INFOTEXT:
	256	if (!gs_objects.m_colTooltipText.Ok()) {
	257	GetTooltipColors();
	258	}
	259	color = gs_objects.m_colTooltipText;
	260	break;
	261
	262	case wxSYS_COLOUR_HIGHLIGHTTEXT:
	263	if (!gs_objects.m_colHighlightText.Ok())
	264	{
	265	wxColour hclr = GetColour(wxSYS_COLOUR_HIGHLIGHT);
	266	if (hclr.Red() > 200 && hclr.Green() > 200 && hclr.Blue() > 200)
	267	gs_objects.m_colHighlightText = *wxBLACK;
	268	else
	269	gs_objects.m_colHighlightText = *wxWHITE;
	270	}
	271	color = gs_objects.m_colHighlightText;
	272	break;
	273
	274	case wxSYS_COLOUR_APPWORKSPACE:
	275	color = *wxWHITE; // ?
	276	break;
	277
	278	case wxSYS_COLOUR_ACTIVECAPTION:
	279	case wxSYS_COLOUR_MENUHILIGHT:
	280	if (!gs_objects.m_colMenuItemHighlight.Ok())
	281	{
	282	gdkColor.red =
	283	gdkColor.green =
	284	gdkColor.blue = 0;
	285	GetColourFromGTKWidget(
	286	gdkColor, wxGTK_MENUITEM, GTK_STATE_SELECTED, wxGTK_BG);
	287	gs_objects.m_colMenuItemHighlight = wxColour(gdkColor);
	288	}
	289	color = gs_objects.m_colMenuItemHighlight;
	290	break;
	291
	292	case wxSYS_COLOUR_HOTLIGHT:
	293	case wxSYS_COLOUR_GRADIENTACTIVECAPTION:
	294	case wxSYS_COLOUR_GRADIENTINACTIVECAPTION:
	295	// TODO
	296	color = *wxBLACK;
	297	break;
	298
	299	case wxSYS_COLOUR_MAX:
	300	default:
	301	wxFAIL_MSG( _T("unknown system colour index") );
	302	color = *wxWHITE;
	303	break;
	304	}
	305
	306	return color;
	307	}
	308
	309	wxFont wxSystemSettingsNative::GetFont( wxSystemFont index )
	310	{
	311	wxFont font;
	312	switch (index)
	313	{
	314	case wxSYS_OEM_FIXED_FONT:
	315	case wxSYS_ANSI_FIXED_FONT:
	316	case wxSYS_SYSTEM_FIXED_FONT:
	317	font = *wxNORMAL_FONT;
	318	break;
	319
	320	case wxSYS_ANSI_VAR_FONT:
	321	case wxSYS_SYSTEM_FONT:
	322	case wxSYS_DEVICE_DEFAULT_FONT:
	323	case wxSYS_DEFAULT_GUI_FONT:
	324	if (!gs_objects.m_fontSystem.Ok())
	325	{
	326	GtkWidget *widget = gtk_button_new();
	327	GtkStyle *def = gtk_rc_get_style( widget );
	328	if ( !def \|\| !def->font_desc )
	329	def = gtk_widget_get_default_style();
	330	if ( def && def->font_desc )
	331	{
	332	wxNativeFontInfo info;
	333	info.description =
	334	pango_font_description_copy(def->font_desc);
	335	gs_objects.m_fontSystem = wxFont(info);
	336	}
	337	else
	338	{
	339	GtkSettings *settings = gtk_settings_get_default();
	340	gchar *font_name = NULL;
	341	g_object_get ( settings,
	342	"gtk-font-name",
	343	&font_name,
	344	NULL);
	345	if (!font_name)
	346	gs_objects.m_fontSystem = wxFont( 12, wxSWISS, wxNORMAL, wxNORMAL );
	347	else
	348	gs_objects.m_fontSystem = wxFont(wxString::FromAscii(font_name));
	349	g_free (font_name);
	350	}
	351	gtk_object_sink((GtkObject*)widget);
	352	}
	353	font = gs_objects.m_fontSystem;
	354	break;
	355
	356	default:
	357	break;
	358	}
	359	return font;
	360	}
	361
	362	static bool wxXGetWindowProperty(GdkWindow* window, Atom& type, int& format, gulong& nitems, guchar*& data)
	363	{
	364	bool success = false;
	365	#if GTK_CHECK_VERSION(2, 2, 0)
	366	if (gtk_check_version(2, 2, 0) == NULL)
	367	{
	368	gulong bytes_after;
	369	success = XGetWindowProperty(
	370	GDK_DISPLAY_XDISPLAY(gdk_drawable_get_display(window)),
	371	GDK_WINDOW_XWINDOW(window),
	372	gdk_x11_get_xatom_by_name_for_display(
	373	gdk_drawable_get_display(window),
	374	"_NET_FRAME_EXTENTS"),
	375	0, // left, right, top, bottom, CARDINAL[4]/32
	376	G_MAXLONG, // size of long
	377	false, // do not delete property
	378	XA_CARDINAL, // 32 bit
	379	&type, &format, &nitems, &bytes_after, &data
	380	) == Success;
	381	}
	382	#endif
	383	return success;
	384	}
	385
	386	int wxSystemSettingsNative::GetMetric( wxSystemMetric index, wxWindow* win )
	387	{
	388	guchar *data = NULL;
	389	Atom type;
	390	int format;
	391	gulong nitems;
	392	GdkWindow *window = NULL;
	393	if(win && GTK_WIDGET_REALIZED(win->GetHandle()))
	394	window = win->GetHandle()->window;
	395
	396	switch (index)
	397	{
	398	case wxSYS_BORDER_X:
	399	case wxSYS_BORDER_Y:
	400	case wxSYS_EDGE_X:
	401	case wxSYS_EDGE_Y:
	402	case wxSYS_FRAMESIZE_X:
	403	case wxSYS_FRAMESIZE_Y:
	404	// If a window is specified/realized, and it is a toplevel window, we can query from wm.
	405	// The returned border thickness is outside the client area in that case.
	406	if (window)
	407	{
	408	wxTopLevelWindow *tlw = wxDynamicCast(win, wxTopLevelWindow);
	409	if (!tlw)
	410	return -1; // not a tlw, not sure how to approach
	411	else
	412	{
	413	// Check if wm supports frame extents - we can't know
	414	// the border widths if it does not.
	415	#if GTK_CHECK_VERSION(2,2,0)
	416	if (!gtk_check_version(2,2,0))
	417	{
	418	if (!gdk_x11_screen_supports_net_wm_hint(
	419	gdk_drawable_get_screen(window),
	420	gdk_atom_intern("_NET_FRAME_EXTENTS", false) ) )
	421	return -1;
	422	}
	423	else
	424	#endif
	425	{
	426	if (!gdk_net_wm_supports(gdk_atom_intern("_NET_FRAME_EXTENTS", false)))
	427	return -1;
	428	}
	429
	430	// Get the frame extents from the windowmanager.
	431	// In most cases the top extent is the titlebar, so we use the bottom extent
	432	// for the heights.
	433	if (wxXGetWindowProperty(window, type, format, nitems, data))
	434	{
	435	int border_return = -1;
	436
	437	if ((type == XA_CARDINAL) && (format == 32) && (nitems >= 4) && (data))
	438	{
	439	switch(index)
	440	{
	441	case wxSYS_BORDER_X:
	442	case wxSYS_EDGE_X:
	443	case wxSYS_FRAMESIZE_X:
	444	border_return = int(data[1]); // width of right extent
	445	break;
	446	default:
	447	border_return = int(data[3]); // height of bottom extent
	448	break;
	449	}
	450	}
	451
	452	if (data)
	453	XFree(data);
	454
	455	return border_return;
	456	}
	457	}
	458	}
	459
	460	return -1; // no window specified
	461
	462	case wxSYS_CURSOR_X:
	463	case wxSYS_CURSOR_Y:
	464	#ifdef __WXGTK24__
	465	if (!gtk_check_version(2,4,0))
	466	{
	467	if (window)
	468	return gdk_display_get_default_cursor_size(gdk_drawable_get_display(window));
	469	else
	470	return gdk_display_get_default_cursor_size(gdk_display_get_default());
	471	}
	472	else
	473	#endif
	474	return 16;
	475
	476	case wxSYS_DCLICK_X:
	477	case wxSYS_DCLICK_Y:
	478	gint dclick_distance;
	479	#if GTK_CHECK_VERSION(2,2,0)
	480	if (window && !gtk_check_version(2,2,0))
	481	g_object_get(gtk_settings_get_for_screen(gdk_drawable_get_screen(window)),
	482	"gtk-double-click-distance", &dclick_distance, NULL);
	483	else
	484	#endif
	485	g_object_get(gtk_settings_get_default(),
	486	"gtk-double-click-distance", &dclick_distance, NULL);
	487
	488	return dclick_distance * 2;
	489
	490	case wxSYS_DRAG_X:
	491	case wxSYS_DRAG_Y:
	492	gint drag_threshold;
	493	#if GTK_CHECK_VERSION(2,2,0)
	494	if (window && !gtk_check_version(2,2,0))
	495	{
	496	g_object_get(
	497	gtk_settings_get_for_screen(gdk_drawable_get_screen(window)),
	498	"gtk-dnd-drag-threshold",
	499	&drag_threshold, NULL);
	500	}
	501	else
	502	#endif
	503	{
	504	g_object_get(gtk_settings_get_default(),
	505	"gtk-dnd-drag-threshold", &drag_threshold, NULL);
	506	}
	507
	508	// The correct thing here would be to double the value
	509	// since that is what the API wants. But the values
	510	// are much bigger under GNOME than under Windows and
	511	// just seem to much in many cases to be useful.
	512	// drag_threshold *= 2;
	513
	514	return drag_threshold;
	515
	516	// MBN: ditto for icons
	517	case wxSYS_ICON_X: return 32;
	518	case wxSYS_ICON_Y: return 32;
	519
	520	case wxSYS_SCREEN_X:
	521	#if GTK_CHECK_VERSION(2,2,0)
	522	if (window && !gtk_check_version(2,2,0))
	523	return gdk_screen_get_width(gdk_drawable_get_screen(window));
	524	else
	525	#endif
	526	return gdk_screen_width();
	527
	528	case wxSYS_SCREEN_Y:
	529	#if GTK_CHECK_VERSION(2,2,0)
	530	if (window && !gtk_check_version(2,2,0))
	531	return gdk_screen_get_height(gdk_drawable_get_screen(window));
	532	else
	533	#endif
	534	return gdk_screen_height();
	535
	536	case wxSYS_HSCROLL_Y: return 15;
	537	case wxSYS_VSCROLL_X: return 15;
	538
	539	case wxSYS_CAPTION_Y:
	540	if (!window)
	541	// No realized window specified, and no implementation for that case yet.
	542	return -1;
	543
	544	// Check if wm supports frame extents - we can't know the caption height if it does not.
	545	#if GTK_CHECK_VERSION(2,2,0)
	546	if (!gtk_check_version(2,2,0))
	547	{
	548	if (!gdk_x11_screen_supports_net_wm_hint(
	549	gdk_drawable_get_screen(window),
	550	gdk_atom_intern("_NET_FRAME_EXTENTS", false) ) )
	551	return -1;
	552	}
	553	else
	554	#endif
	555	{
	556	if (!gdk_net_wm_supports(gdk_atom_intern("_NET_FRAME_EXTENTS", false)))
	557	return -1;
	558	}
	559
	560	wxASSERT_MSG( wxDynamicCast(win, wxTopLevelWindow),
	561	wxT("Asking for caption height of a non toplevel window") );
	562
	563	// Get the height of the top windowmanager border.
	564	// This is the titlebar in most cases. The titlebar might be elsewhere, and
	565	// we could check which is the thickest wm border to decide on which side the
	566	// titlebar is, but this might lead to interesting behaviours in used code.
	567	// Reconsider when we have a way to report to the user on which side it is.
	568	if (wxXGetWindowProperty(window, type, format, nitems, data))
	569	{
	570	int caption_height = -1;
	571
	572	if ((type == XA_CARDINAL) && (format == 32) && (nitems >= 3) && (data))
	573	{
	574	caption_height = int(data[2]); // top frame extent
	575	}
	576
	577	if (data)
	578	XFree(data);
	579
	580	return caption_height;
	581	}
	582
	583	// Try a default approach without a window pointer, if possible
	584	// ...
	585
	586	return -1;
	587
	588	case wxSYS_PENWINDOWS_PRESENT:
	589	// No MS Windows for Pen computing extension available in X11 based gtk+.
	590	return 0;
	591
	592	default:
	593	return -1; // metric is unknown
	594	}
	595	}
	596
	597	bool wxSystemSettingsNative::HasFeature(wxSystemFeature index)
	598	{
	599	switch (index)
	600	{
	601	case wxSYS_CAN_ICONIZE_FRAME:
	602	return false;
	603
	604	case wxSYS_CAN_DRAW_FRAME_DECORATIONS:
	605	return true;
	606
	607	default:
	608	return false;
	609	}
	610	}