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_colWindow,
             m_colWindowText,
             m_colBtnText,
             m_colMenuItemHighlight,
             m_colTooltip,
             m_colTooltipText,
             m_colMenubarBg;

    wxFont m_fontSystem;
};

static wxSystemObjects gs_objects;

void wxClearGtkSystemObjects()
{
    gs_objects.m_colBtnFace = wxColour();
    gs_objects.m_colBtnShadow = wxColour();
    gs_objects.m_colBtnHighlight = wxColour();
    gs_objects.m_colHighlightText = wxColour();
    gs_objects.m_colListBox = wxColour();
    gs_objects.m_colWindow = wxColour();
    gs_objects.m_colWindowText = wxColour();
    gs_objects.m_colBtnText = wxColour();
    gs_objects.m_colMenuItemHighlight = wxColour();
    gs_objects.m_colTooltip = wxColour();
    gs_objects.m_colTooltipText = wxColour();
    gs_objects.m_colMenubarBg = wxColour();
    gs_objects.m_fontSystem = wxNullFont;
}

// ----------------------------------------------------------------------------
// wxSystemSettings implementation
// ----------------------------------------------------------------------------

// kind of widget to use in GetColourFromGTKWidget
enum wxGtkWidgetType
{
    wxGTK_BUTTON,
    wxGTK_LIST,
    wxGTK_MENUITEM,
    wxGTK_TEXTCTRL,
    wxGTK_MENUBAR,
};

// 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_TEXTCTRL:
            widget = gtk_text_view_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();

        case wxGTK_MENUBAR:
            widget = gtk_menu_bar_new();
            break;

    }

    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()
{
    GtkWidget* widget = gtk_window_new(GTK_WINDOW_POPUP);
    const char* name = "gtk-tooltip";
    if (gtk_check_version(2, 11, 0))
        name = "gtk-tooltips";
    gtk_widget_set_name(widget, name);
    gtk_widget_ensure_style(widget);

    GdkColor c = widget->style->bg[GTK_STATE_NORMAL];
    gs_objects.m_colTooltip = wxColor(c);
    c = widget->style->fg[GTK_STATE_NORMAL];
    gs_objects.m_colTooltipText = wxColor(c);

    gtk_widget_destroy(widget);
}

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_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:
            if (!gs_objects.m_colWindow.Ok())
            {
                gdkColor.red =
                gdkColor.green =
                gdkColor.blue = 0xFFFF;
                GetColourFromGTKWidget(gdkColor, wxGTK_TEXTCTRL, GTK_STATE_NORMAL, wxGTK_BASE);
                gs_objects.m_colWindow = wxColor(gdkColor);
            }
            color = gs_objects.m_colWindow;
            break;


        case wxSYS_COLOUR_MENUBAR:
            if (!gs_objects.m_colMenubarBg.Ok())
            {
                gdkColor.red =
                gdkColor.green = 0;
                gdkColor.blue = 0x9c40;
                GetColourFromGTKWidget(gdkColor,wxGTK_MENUBAR);
                gs_objects.m_colMenubarBg = wxColor(gdkColor);
            }
            color = gs_objects.m_colMenubarBg;
            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 GetFrameExtents(GdkWindow* window, int* left, int* right, int* top, int* bottom)
{
    bool success = false;
    Atom property = 0;
    if (gdk_x11_screen_supports_net_wm_hint(
            gdk_drawable_get_screen(window),
            gdk_atom_intern("_NET_FRAME_EXTENTS", false)))
    {
        success = true;
        property = gdk_x11_get_xatom_by_name_for_display(
            gdk_drawable_get_display(window),
            "_NET_FRAME_EXTENTS");
    }

    if (success)
    {
        Atom type;
        int format;
        gulong nitems, bytes_after;
        guchar* data;
        success = XGetWindowProperty(
            gdk_x11_drawable_get_xdisplay(window),
            gdk_x11_drawable_get_xid(window),
            property,
            0, 4,
            false,
            XA_CARDINAL,
            &type, &format, &nitems, &bytes_after, &data
            ) == Success;
        if (success)
        {
            success = data && nitems == 4;
            if (success)
            {
                long* p = (long*)data;
                if (left)   *left   = int(p[0]);
                if (right)  *right  = int(p[1]);
                if (top)    *top    = int(p[2]);
                if (bottom) *bottom = int(p[3]);
            }
            if (data)
                XFree(data);
        }
    }
    return success;
}

// helper: return the GtkSettings either for the screen the current window is
// on or for the default screen if window is NULL
static GtkSettings *GetSettingsForWindowScreen(GdkWindow *window)
{
    return window ? gtk_settings_get_for_screen(gdk_drawable_get_screen(window))
                  : gtk_settings_get_default();
}

int wxSystemSettingsNative::GetMetric( wxSystemMetric index, wxWindow* win )
{
    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
                {
                    // 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.
                    int right, bottom;
                    if (GetFrameExtents(window, NULL, &right, NULL, &bottom))
                    {
                        switch (index)
                        {
                            case wxSYS_BORDER_X:
                            case wxSYS_EDGE_X:
                            case wxSYS_FRAMESIZE_X:
                                return right; // width of right extent
                            default:
                                return bottom; // height of bottom extent
                        }
                    }
                }
            }

            return -1; // no window specified

        case wxSYS_CURSOR_X:
        case wxSYS_CURSOR_Y:
                return gdk_display_get_default_cursor_size(
                            window ? gdk_drawable_get_display(window)
                                   : gdk_display_get_default());

        case wxSYS_DCLICK_X:
        case wxSYS_DCLICK_Y:
            gint dclick_distance;
            g_object_get(GetSettingsForWindowScreen(window),
                            "gtk-double-click-distance", &dclick_distance, NULL);

            return dclick_distance * 2;

        case wxSYS_DCLICK_MSEC:
            gint dclick;
            g_object_get(GetSettingsForWindowScreen(window),
                            "gtk-double-click-time", &dclick, NULL);
            return dclick;

        case wxSYS_DRAG_X:
        case wxSYS_DRAG_Y:
            gint drag_threshold;
            g_object_get(GetSettingsForWindowScreen(window),
                            "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;

        case wxSYS_ICON_X:
        case wxSYS_ICON_Y:
            return 32;

        case wxSYS_SCREEN_X:
            if (window)
                return gdk_screen_get_width(gdk_drawable_get_screen(window));
            else
                return gdk_screen_width();

        case wxSYS_SCREEN_Y:
            if (window)
                return gdk_screen_get_height(gdk_drawable_get_screen(window));
            else
                return gdk_screen_height();

        case wxSYS_HSCROLL_Y:
        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;

            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.
            {
                int top;
                if (GetFrameExtents(window, NULL, NULL, &top, NULL))
                {
                    return top; // top frame extent
                }
            }

            // 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_colWindow,
	46	m_colWindowText,
	47	m_colBtnText,
	48	m_colMenuItemHighlight,
	49	m_colTooltip,
	50	m_colTooltipText,
	51	m_colMenubarBg;
	52
	53	wxFont m_fontSystem;
	54	};
	55
	56	static wxSystemObjects gs_objects;
	57
	58	void wxClearGtkSystemObjects()
	59	{
	60	gs_objects.m_colBtnFace = wxColour();
	61	gs_objects.m_colBtnShadow = wxColour();
	62	gs_objects.m_colBtnHighlight = wxColour();
	63	gs_objects.m_colHighlightText = wxColour();
	64	gs_objects.m_colListBox = wxColour();
	65	gs_objects.m_colWindow = wxColour();
	66	gs_objects.m_colWindowText = wxColour();
	67	gs_objects.m_colBtnText = wxColour();
	68	gs_objects.m_colMenuItemHighlight = wxColour();
	69	gs_objects.m_colTooltip = wxColour();
	70	gs_objects.m_colTooltipText = wxColour();
	71	gs_objects.m_colMenubarBg = wxColour();
	72	gs_objects.m_fontSystem = wxNullFont;
	73	}
	74
	75	// ----------------------------------------------------------------------------
	76	// wxSystemSettings implementation
	77	// ----------------------------------------------------------------------------
	78
	79	// kind of widget to use in GetColourFromGTKWidget
	80	enum wxGtkWidgetType
	81	{
	82	wxGTK_BUTTON,
	83	wxGTK_LIST,
	84	wxGTK_MENUITEM,
	85	wxGTK_TEXTCTRL,
	86	wxGTK_MENUBAR,
	87	};
	88
	89	// the colour we need
	90	enum wxGtkColourType
	91	{
	92	wxGTK_FG,
	93	wxGTK_BG,
	94	wxGTK_BASE
	95	};
	96
	97	// wxSystemSettings::GetColour() helper: get the colours from a GTK+
	98	// widget style, return true if we did get them
	99	static bool GetColourFromGTKWidget(GdkColor& gdkColor,
	100	wxGtkWidgetType type = wxGTK_BUTTON,
	101	GtkStateType state = GTK_STATE_NORMAL,
	102	wxGtkColourType colour = wxGTK_BG)
	103	{
	104	GtkWidget *widget;
	105	switch ( type )
	106	{
	107	default:
	108	wxFAIL_MSG( _T("unexpected GTK widget type") );
	109	// fall through
	110
	111	case wxGTK_BUTTON:
	112	widget = gtk_button_new();
	113	break;
	114
	115	case wxGTK_TEXTCTRL:
	116	widget = gtk_text_view_new();
	117	break;
	118
	119	case wxGTK_LIST:
	120	widget = gtk_tree_view_new_with_model(
	121	(GtkTreeModel*)gtk_list_store_new(1, G_TYPE_INT));
	122	break;
	123
	124	case wxGTK_MENUITEM:
	125	widget = gtk_menu_item_new();
	126
	127	case wxGTK_MENUBAR:
	128	widget = gtk_menu_bar_new();
	129	break;
	130
	131	}
	132
	133	GtkStyle *def = gtk_rc_get_style( widget );
	134	if ( !def )
	135	def = gtk_widget_get_default_style();
	136
	137	const bool ok = def != NULL;
	138	if (ok)
	139	{
	140	switch ( colour )
	141	{
	142	default:
	143	wxFAIL_MSG( _T("unexpected GTK colour type") );
	144	// fall through
	145
	146	case wxGTK_FG:
	147	gdkColor = def->fg[state];
	148	break;
	149
	150	case wxGTK_BG:
	151	gdkColor = def->bg[state];
	152	break;
	153
	154	case wxGTK_BASE:
	155	gdkColor = def->base[state];
	156	break;
	157	}
	158	}
	159
	160	gtk_object_sink((GtkObject*)widget);
	161
	162	return ok;
	163	}
	164
	165	static void GetTooltipColors()
	166	{
	167	GtkWidget* widget = gtk_window_new(GTK_WINDOW_POPUP);
	168	const char* name = "gtk-tooltip";
	169	if (gtk_check_version(2, 11, 0))
	170	name = "gtk-tooltips";
	171	gtk_widget_set_name(widget, name);
	172	gtk_widget_ensure_style(widget);
	173
	174	GdkColor c = widget->style->bg[GTK_STATE_NORMAL];
	175	gs_objects.m_colTooltip = wxColor(c);
	176	c = widget->style->fg[GTK_STATE_NORMAL];
	177	gs_objects.m_colTooltipText = wxColor(c);
	178
	179	gtk_widget_destroy(widget);
	180	}
	181
	182	wxColour wxSystemSettingsNative::GetColour( wxSystemColour index )
	183	{
	184	wxColor color;
	185	GdkColor gdkColor;
	186	switch (index)
	187	{
	188	case wxSYS_COLOUR_SCROLLBAR:
	189	case wxSYS_COLOUR_BACKGROUND:
	190	case wxSYS_COLOUR_INACTIVECAPTION:
	191	case wxSYS_COLOUR_MENU:
	192	case wxSYS_COLOUR_WINDOWFRAME:
	193	case wxSYS_COLOUR_ACTIVEBORDER:
	194	case wxSYS_COLOUR_INACTIVEBORDER:
	195	case wxSYS_COLOUR_BTNFACE:
	196	case wxSYS_COLOUR_3DLIGHT:
	197	if (!gs_objects.m_colBtnFace.Ok())
	198	{
	199	gdkColor.red =
	200	gdkColor.green = 0;
	201	gdkColor.blue = 0x9c40;
	202	GetColourFromGTKWidget(gdkColor);
	203	gs_objects.m_colBtnFace = wxColor(gdkColor);
	204	}
	205	color = gs_objects.m_colBtnFace;
	206	break;
	207
	208	case wxSYS_COLOUR_WINDOW:
	209	if (!gs_objects.m_colWindow.Ok())
	210	{
	211	gdkColor.red =
	212	gdkColor.green =
	213	gdkColor.blue = 0xFFFF;
	214	GetColourFromGTKWidget(gdkColor, wxGTK_TEXTCTRL, GTK_STATE_NORMAL, wxGTK_BASE);
	215	gs_objects.m_colWindow = wxColor(gdkColor);
	216	}
	217	color = gs_objects.m_colWindow;
	218	break;
	219
	220
	221	case wxSYS_COLOUR_MENUBAR:
	222	if (!gs_objects.m_colMenubarBg.Ok())
	223	{
	224	gdkColor.red =
	225	gdkColor.green = 0;
	226	gdkColor.blue = 0x9c40;
	227	GetColourFromGTKWidget(gdkColor,wxGTK_MENUBAR);
	228	gs_objects.m_colMenubarBg = wxColor(gdkColor);
	229	}
	230	color = gs_objects.m_colMenubarBg;
	231	break;
	232
	233	case wxSYS_COLOUR_3DDKSHADOW:
	234	color = *wxBLACK;
	235	break;
	236
	237	case wxSYS_COLOUR_GRAYTEXT:
	238	case wxSYS_COLOUR_BTNSHADOW:
	239	//case wxSYS_COLOUR_3DSHADOW:
	240	if (!gs_objects.m_colBtnShadow.Ok())
	241	{
	242	wxColour faceColour(GetColour(wxSYS_COLOUR_3DFACE));
	243	gs_objects.m_colBtnShadow =
	244	wxColour((unsigned char) (faceColour.Red() * 2 / 3),
	245	(unsigned char) (faceColour.Green() * 2 / 3),
	246	(unsigned char) (faceColour.Blue() * 2 / 3));
	247	}
	248	color = gs_objects.m_colBtnShadow;
	249	break;
	250
	251	case wxSYS_COLOUR_3DHIGHLIGHT:
	252	//case wxSYS_COLOUR_BTNHIGHLIGHT:
	253	color = *wxWHITE;
	254	break;
	255
	256	case wxSYS_COLOUR_HIGHLIGHT:
	257	if (!gs_objects.m_colHighlight.Ok())
	258	{
	259	gdkColor.red =
	260	gdkColor.green = 0;
	261	gdkColor.blue = 0x9c40;
	262	GetColourFromGTKWidget(
	263	gdkColor, wxGTK_BUTTON, GTK_STATE_SELECTED);
	264	gs_objects.m_colHighlight = wxColour(gdkColor);
	265	}
	266	color = gs_objects.m_colHighlight;
	267	break;
	268
	269	case wxSYS_COLOUR_LISTBOX:
	270	if (!gs_objects.m_colListBox.Ok())
	271	{
	272	if ( GetColourFromGTKWidget(gdkColor,
	273	wxGTK_LIST,
	274	GTK_STATE_NORMAL,
	275	wxGTK_BASE) )
	276	{
	277	gs_objects.m_colListBox = wxColour(gdkColor);
	278	}
	279	else
	280	{
	281	gs_objects.m_colListBox = *wxWHITE;
	282	}
	283	}
	284	color = gs_objects.m_colListBox;
	285	break;
	286
	287	case wxSYS_COLOUR_MENUTEXT:
	288	case wxSYS_COLOUR_WINDOWTEXT:
	289	case wxSYS_COLOUR_CAPTIONTEXT:
	290	case wxSYS_COLOUR_INACTIVECAPTIONTEXT:
	291	case wxSYS_COLOUR_BTNTEXT:
	292	if (!gs_objects.m_colBtnText.Ok())
	293	{
	294	gdkColor.red =
	295	gdkColor.green =
	296	gdkColor.blue = 0;
	297	GetColourFromGTKWidget(
	298	gdkColor, wxGTK_BUTTON, GTK_STATE_NORMAL, wxGTK_FG);
	299	gs_objects.m_colBtnText = wxColour(gdkColor);
	300	}
	301	color = gs_objects.m_colBtnText;
	302	break;
	303
	304	case wxSYS_COLOUR_INFOBK:
	305	if (!gs_objects.m_colTooltip.Ok()) {
	306	GetTooltipColors();
	307	}
	308	color = gs_objects.m_colTooltip;
	309	break;
	310
	311	case wxSYS_COLOUR_INFOTEXT:
	312	if (!gs_objects.m_colTooltipText.Ok()) {
	313	GetTooltipColors();
	314	}
	315	color = gs_objects.m_colTooltipText;
	316	break;
	317
	318	case wxSYS_COLOUR_HIGHLIGHTTEXT:
	319	if (!gs_objects.m_colHighlightText.Ok())
	320	{
	321	wxColour hclr = GetColour(wxSYS_COLOUR_HIGHLIGHT);
	322	if (hclr.Red() > 200 && hclr.Green() > 200 && hclr.Blue() > 200)
	323	gs_objects.m_colHighlightText = *wxBLACK;
	324	else
	325	gs_objects.m_colHighlightText = *wxWHITE;
	326	}
	327	color = gs_objects.m_colHighlightText;
	328	break;
	329
	330	case wxSYS_COLOUR_APPWORKSPACE:
	331	color = *wxWHITE; // ?
	332	break;
	333
	334	case wxSYS_COLOUR_ACTIVECAPTION:
	335	case wxSYS_COLOUR_MENUHILIGHT:
	336	if (!gs_objects.m_colMenuItemHighlight.Ok())
	337	{
	338	gdkColor.red =
	339	gdkColor.green =
	340	gdkColor.blue = 0;
	341	GetColourFromGTKWidget(
	342	gdkColor, wxGTK_MENUITEM, GTK_STATE_SELECTED, wxGTK_BG);
	343	gs_objects.m_colMenuItemHighlight = wxColour(gdkColor);
	344	}
	345	color = gs_objects.m_colMenuItemHighlight;
	346	break;
	347
	348	case wxSYS_COLOUR_HOTLIGHT:
	349	case wxSYS_COLOUR_GRADIENTACTIVECAPTION:
	350	case wxSYS_COLOUR_GRADIENTINACTIVECAPTION:
	351	// TODO
	352	color = *wxBLACK;
	353	break;
	354
	355	case wxSYS_COLOUR_MAX:
	356	default:
	357	wxFAIL_MSG( _T("unknown system colour index") );
	358	color = *wxWHITE;
	359	break;
	360	}
	361
	362	return color;
	363	}
	364
	365	wxFont wxSystemSettingsNative::GetFont( wxSystemFont index )
	366	{
	367	wxFont font;
	368	switch (index)
	369	{
	370	case wxSYS_OEM_FIXED_FONT:
	371	case wxSYS_ANSI_FIXED_FONT:
	372	case wxSYS_SYSTEM_FIXED_FONT:
	373	font = *wxNORMAL_FONT;
	374	break;
	375
	376	case wxSYS_ANSI_VAR_FONT:
	377	case wxSYS_SYSTEM_FONT:
	378	case wxSYS_DEVICE_DEFAULT_FONT:
	379	case wxSYS_DEFAULT_GUI_FONT:
	380	if (!gs_objects.m_fontSystem.Ok())
	381	{
	382	GtkWidget *widget = gtk_button_new();
	383	GtkStyle *def = gtk_rc_get_style( widget );
	384	if ( !def \|\| !def->font_desc )
	385	def = gtk_widget_get_default_style();
	386	if ( def && def->font_desc )
	387	{
	388	wxNativeFontInfo info;
	389	info.description =
	390	pango_font_description_copy(def->font_desc);
	391	gs_objects.m_fontSystem = wxFont(info);
	392	}
	393	else
	394	{
	395	GtkSettings *settings = gtk_settings_get_default();
	396	gchar *font_name = NULL;
	397	g_object_get ( settings,
	398	"gtk-font-name",
	399	&font_name,
	400	NULL);
	401	if (!font_name)
	402	gs_objects.m_fontSystem = wxFont( 12, wxSWISS, wxNORMAL, wxNORMAL );
	403	else
	404	gs_objects.m_fontSystem = wxFont(wxString::FromAscii(font_name));
	405	g_free (font_name);
	406	}
	407	gtk_object_sink((GtkObject*)widget);
	408	}
	409	font = gs_objects.m_fontSystem;
	410	break;
	411
	412	default:
	413	break;
	414	}
	415	return font;
	416	}
	417
	418	static bool GetFrameExtents(GdkWindow* window, int* left, int* right, int* top, int* bottom)
	419	{
	420	bool success = false;
	421	Atom property = 0;
	422	if (gdk_x11_screen_supports_net_wm_hint(
	423	gdk_drawable_get_screen(window),
	424	gdk_atom_intern("_NET_FRAME_EXTENTS", false)))
	425	{
	426	success = true;
	427	property = gdk_x11_get_xatom_by_name_for_display(
	428	gdk_drawable_get_display(window),
	429	"_NET_FRAME_EXTENTS");
	430	}
	431
	432	if (success)
	433	{
	434	Atom type;
	435	int format;
	436	gulong nitems, bytes_after;
	437	guchar* data;
	438	success = XGetWindowProperty(
	439	gdk_x11_drawable_get_xdisplay(window),
	440	gdk_x11_drawable_get_xid(window),
	441	property,
	442	0, 4,
	443	false,
	444	XA_CARDINAL,
	445	&type, &format, &nitems, &bytes_after, &data
	446	) == Success;
	447	if (success)
	448	{
	449	success = data && nitems == 4;
	450	if (success)
	451	{
	452	long* p = (long*)data;
	453	if (left) *left = int(p[0]);
	454	if (right) *right = int(p[1]);
	455	if (top) *top = int(p[2]);
	456	if (bottom) *bottom = int(p[3]);
	457	}
	458	if (data)
	459	XFree(data);
	460	}
	461	}
	462	return success;
	463	}
	464
	465	// helper: return the GtkSettings either for the screen the current window is
	466	// on or for the default screen if window is NULL
	467	static GtkSettings GetSettingsForWindowScreen(GdkWindow window)
	468	{
	469	return window ? gtk_settings_get_for_screen(gdk_drawable_get_screen(window))
	470	: gtk_settings_get_default();
	471	}
	472
	473	int wxSystemSettingsNative::GetMetric( wxSystemMetric index, wxWindow* win )
	474	{
	475	GdkWindow *window = NULL;
	476	if(win && GTK_WIDGET_REALIZED(win->GetHandle()))
	477	window = win->GetHandle()->window;
	478
	479	switch (index)
	480	{
	481	case wxSYS_BORDER_X:
	482	case wxSYS_BORDER_Y:
	483	case wxSYS_EDGE_X:
	484	case wxSYS_EDGE_Y:
	485	case wxSYS_FRAMESIZE_X:
	486	case wxSYS_FRAMESIZE_Y:
	487	// If a window is specified/realized, and it is a toplevel window, we can query from wm.
	488	// The returned border thickness is outside the client area in that case.
	489	if (window)
	490	{
	491	wxTopLevelWindow *tlw = wxDynamicCast(win, wxTopLevelWindow);
	492	if (!tlw)
	493	return -1; // not a tlw, not sure how to approach
	494	else
	495	{
	496	// Get the frame extents from the windowmanager.
	497	// In most cases the top extent is the titlebar, so we use the bottom extent
	498	// for the heights.
	499	int right, bottom;
	500	if (GetFrameExtents(window, NULL, &right, NULL, &bottom))
	501	{
	502	switch (index)
	503	{
	504	case wxSYS_BORDER_X:
	505	case wxSYS_EDGE_X:
	506	case wxSYS_FRAMESIZE_X:
	507	return right; // width of right extent
	508	default:
	509	return bottom; // height of bottom extent
	510	}
	511	}
	512	}
	513	}
	514
	515	return -1; // no window specified
	516
	517	case wxSYS_CURSOR_X:
	518	case wxSYS_CURSOR_Y:
	519	return gdk_display_get_default_cursor_size(
	520	window ? gdk_drawable_get_display(window)
	521	: gdk_display_get_default());
	522
	523	case wxSYS_DCLICK_X:
	524	case wxSYS_DCLICK_Y:
	525	gint dclick_distance;
	526	g_object_get(GetSettingsForWindowScreen(window),
	527	"gtk-double-click-distance", &dclick_distance, NULL);
	528
	529	return dclick_distance * 2;
	530
	531	case wxSYS_DCLICK_MSEC:
	532	gint dclick;
	533	g_object_get(GetSettingsForWindowScreen(window),
	534	"gtk-double-click-time", &dclick, NULL);
	535	return dclick;
	536
	537	case wxSYS_DRAG_X:
	538	case wxSYS_DRAG_Y:
	539	gint drag_threshold;
	540	g_object_get(GetSettingsForWindowScreen(window),
	541	"gtk-dnd-drag-threshold", &drag_threshold, NULL);
	542
	543	// The correct thing here would be to double the value
	544	// since that is what the API wants. But the values
	545	// are much bigger under GNOME than under Windows and
	546	// just seem to much in many cases to be useful.
	547	// drag_threshold *= 2;
	548
	549	return drag_threshold;
	550
	551	case wxSYS_ICON_X:
	552	case wxSYS_ICON_Y:
	553	return 32;
	554
	555	case wxSYS_SCREEN_X:
	556	if (window)
	557	return gdk_screen_get_width(gdk_drawable_get_screen(window));
	558	else
	559	return gdk_screen_width();
	560
	561	case wxSYS_SCREEN_Y:
	562	if (window)
	563	return gdk_screen_get_height(gdk_drawable_get_screen(window));
	564	else
	565	return gdk_screen_height();
	566
	567	case wxSYS_HSCROLL_Y:
	568	case wxSYS_VSCROLL_X:
	569	return 15;
	570
	571	case wxSYS_CAPTION_Y:
	572	if (!window)
	573	// No realized window specified, and no implementation for that case yet.
	574	return -1;
	575
	576	wxASSERT_MSG( wxDynamicCast(win, wxTopLevelWindow),
	577	wxT("Asking for caption height of a non toplevel window") );
	578
	579	// Get the height of the top windowmanager border.
	580	// This is the titlebar in most cases. The titlebar might be elsewhere, and
	581	// we could check which is the thickest wm border to decide on which side the
	582	// titlebar is, but this might lead to interesting behaviours in used code.
	583	// Reconsider when we have a way to report to the user on which side it is.
	584	{
	585	int top;
	586	if (GetFrameExtents(window, NULL, NULL, &top, NULL))
	587	{
	588	return top; // top frame extent
	589	}
	590	}
	591
	592	// Try a default approach without a window pointer, if possible
	593	// ...
	594
	595	return -1;
	596
	597	case wxSYS_PENWINDOWS_PRESENT:
	598	// No MS Windows for Pen computing extension available in X11 based gtk+.
	599	return 0;
	600
	601	default:
	602	return -1; // metric is unknown
	603	}
	604	}
	605
	606	bool wxSystemSettingsNative::HasFeature(wxSystemFeature index)
	607	{
	608	switch (index)
	609	{
	610	case wxSYS_CAN_ICONIZE_FRAME:
	611	return false;
	612
	613	case wxSYS_CAN_DRAW_FRAME_DECORATIONS:
	614	return true;
	615
	616	default:
	617	return false;
	618	}
	619	}