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"

// Using gtk_list_new, which is deprecated since GTK2
// Using gtk_object_sink, which is deprecated since GTK+-2.9.0
#ifdef GTK_DISABLE_DEPRECATED
#undef GTK_DISABLE_DEPRECATED
#endif

#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#include <gdk/gdkprivate.h>
#include <gtk/gtk.h>

#include <X11/Xatom.h>

#define SHIFT (8*(sizeof(short int)-sizeof(char)))

// ----------------------------------------------------------------------------
// 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, false to use defaults
static bool GetColourFromGTKWidget(int& red, int& green, int& blue,
                                   wxGtkWidgetType type = wxGTK_BUTTON,
                                   GtkStateType state = GTK_STATE_NORMAL,
                                   wxGtkColourType colour = wxGTK_BG)
{
    GtkWidget *widget;
    switch ( type )
    {
        default:
            wxFAIL_MSG( _T("unexpected GTK widget type") );
            // fall through

        case wxGTK_BUTTON:
            widget = gtk_button_new();
            break;

        case wxGTK_LIST:
            widget = gtk_list_new();
            break;

        case wxGTK_MENUITEM:
            widget = gtk_menu_item_new();
    }

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

    bool ok;
    if ( def )
    {
        GdkColor *col;
        switch ( colour )
        {
            default:
                wxFAIL_MSG( _T("unexpected GTK colour type") );
                // fall through

            case wxGTK_FG:
                col = def->fg;
                break;

            case wxGTK_BG:
                col = def->bg;
                break;

            case wxGTK_BASE:
                col = def->base;
                break;
        }

        red = col[state].red;
        green = col[state].green;
        blue = col[state].blue;

        ok = true;
    }
    else
    {
        ok = false;
    }

    gtk_widget_destroy( widget );

    return ok;
}

static void GetTooltipColors()
{
    GtkTooltips* tooltips = gtk_tooltips_new();
    gtk_tooltips_force_window(tooltips);
    gtk_widget_ensure_style(tooltips->tip_window);
    GdkColor c = tooltips->tip_window->style->bg[GTK_STATE_NORMAL];
    gs_objects.m_colTooltip = wxColor(c.red >> SHIFT, c.green >> SHIFT, c.blue >> SHIFT);
    c = tooltips->tip_window->style->fg[GTK_STATE_NORMAL];
    gs_objects.m_colTooltipText = wxColor(c.red >> SHIFT, c.green >> SHIFT, c.blue >> SHIFT);
    gtk_object_sink(wx_reinterpret_cast(GtkObject*, tooltips));
}

wxColour wxSystemSettingsNative::GetColour( wxSystemColour index )
{
    switch (index)
    {
        case wxSYS_COLOUR_SCROLLBAR:
        case wxSYS_COLOUR_BACKGROUND:
        case wxSYS_COLOUR_INACTIVECAPTION:
        case wxSYS_COLOUR_MENU:
        case wxSYS_COLOUR_WINDOWFRAME:
        case wxSYS_COLOUR_ACTIVEBORDER:
        case wxSYS_COLOUR_INACTIVEBORDER:
        case wxSYS_COLOUR_BTNFACE:
        case wxSYS_COLOUR_MENUBAR:
        case wxSYS_COLOUR_3DLIGHT:
            if (!gs_objects.m_colBtnFace.Ok())
            {
                int red, green, blue;
                if ( !GetColourFromGTKWidget(red, green, blue) )
                {
                    red =
                    green = 0;
                    blue = 0x9c40;
                }

                gs_objects.m_colBtnFace = wxColour( red   >> SHIFT,
                                                   green >> SHIFT,
                                                   blue  >> SHIFT );
            }
            return gs_objects.m_colBtnFace;

        case wxSYS_COLOUR_WINDOW:
            return *wxWHITE;

        case wxSYS_COLOUR_3DDKSHADOW:
            return *wxBLACK;

        case wxSYS_COLOUR_GRAYTEXT:
        case wxSYS_COLOUR_BTNSHADOW:
        //case wxSYS_COLOUR_3DSHADOW:
            if (!gs_objects.m_colBtnShadow.Ok())
            {
                wxColour faceColour(GetColour(wxSYS_COLOUR_3DFACE));
                gs_objects.m_colBtnShadow =
                   wxColour((unsigned char) (faceColour.Red() * 0.666),
                            (unsigned char) (faceColour.Green() * 0.666),
                            (unsigned char) (faceColour.Blue() * 0.666));
            }

            return gs_objects.m_colBtnShadow;

        case wxSYS_COLOUR_3DHIGHLIGHT:
        //case wxSYS_COLOUR_BTNHIGHLIGHT:
            return * wxWHITE;

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

                gs_objects.m_colHighlight = wxColour( red   >> SHIFT,
                                                        green >> SHIFT,
                                                        blue  >> SHIFT );
            }
            return gs_objects.m_colHighlight;

        case wxSYS_COLOUR_LISTBOX:
            if (!gs_objects.m_colListBox.Ok())
            {
                int red, green, blue;
                if ( GetColourFromGTKWidget(red, green, blue,
                                            wxGTK_LIST,
                                            GTK_STATE_NORMAL,
                                            wxGTK_BASE) )
                {
                    gs_objects.m_colListBox = wxColour( red   >> SHIFT,
                                                          green >> SHIFT,
                                                          blue  >> SHIFT );
                }
                else
                {
                    gs_objects.m_colListBox = wxColour(*wxWHITE);
                }
            }
            return gs_objects.m_colListBox;

        case wxSYS_COLOUR_MENUTEXT:
        case wxSYS_COLOUR_WINDOWTEXT:
        case wxSYS_COLOUR_CAPTIONTEXT:
        case wxSYS_COLOUR_INACTIVECAPTIONTEXT:
        case wxSYS_COLOUR_BTNTEXT:
            if (!gs_objects.m_colBtnText.Ok())
            {
                int red, green, blue;
                if ( !GetColourFromGTKWidget(red, green, blue,
                                             wxGTK_BUTTON,
                                             GTK_STATE_NORMAL,
                                             wxGTK_FG) )
                {
                    red =
                    green =
                    blue = 0;
                }

                gs_objects.m_colBtnText = wxColour( red   >> SHIFT,
                                                      green >> SHIFT,
                                                      blue  >> SHIFT );
            }
            return gs_objects.m_colBtnText;

        case wxSYS_COLOUR_INFOBK:
            if (!gs_objects.m_colTooltip.Ok()) {
                GetTooltipColors();
            }
            return gs_objects.m_colTooltip;

        case wxSYS_COLOUR_INFOTEXT:
            if (!gs_objects.m_colTooltipText.Ok()) {
                GetTooltipColors();
            }
            return gs_objects.m_colTooltipText;

        case wxSYS_COLOUR_HIGHLIGHTTEXT:
            if (!gs_objects.m_colHighlightText.Ok())
            {
                wxColour hclr = GetColour(wxSYS_COLOUR_HIGHLIGHT);
                if (hclr.Red() > 200 && hclr.Green() > 200 && hclr.Blue() > 200)
                    gs_objects.m_colHighlightText = wxColour(*wxBLACK);
                else
                    gs_objects.m_colHighlightText = wxColour(*wxWHITE);
            }
            return gs_objects.m_colHighlightText;

        case wxSYS_COLOUR_APPWORKSPACE:
            return *wxWHITE;    // ?

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

                gs_objects.m_colMenuItemHighlight = wxColour( red  >> SHIFT,
                                                              green >> SHIFT,
                                                              blue  >> SHIFT );
            }
            return gs_objects.m_colMenuItemHighlight;

        case wxSYS_COLOUR_HOTLIGHT:
        case wxSYS_COLOUR_GRADIENTACTIVECAPTION:
        case wxSYS_COLOUR_GRADIENTINACTIVECAPTION:
            // TODO
            return *wxBLACK;

        case wxSYS_COLOUR_MAX:
        default:
            wxFAIL_MSG( _T("unknown system colour index") );
    }

    return *wxWHITE;
}

wxFont wxSystemSettingsNative::GetFont( wxSystemFont index )
{
    switch (index)
    {
        case wxSYS_OEM_FIXED_FONT:
        case wxSYS_ANSI_FIXED_FONT:
        case wxSYS_SYSTEM_FIXED_FONT:
        {
            return *wxNORMAL_FONT;
        }
        case wxSYS_ANSI_VAR_FONT:
        case wxSYS_SYSTEM_FONT:
        case wxSYS_DEVICE_DEFAULT_FONT:
        case wxSYS_DEFAULT_GUI_FONT:
        {
            if (!gs_objects.m_fontSystem.Ok())
            {
                GtkWidget *widget = gtk_button_new();
                GtkStyle *def = gtk_rc_get_style( widget );
                if ( !def || !def->font_desc )
                    def = gtk_widget_get_default_style();
                if ( def && def->font_desc )
                {
                    wxNativeFontInfo info;
                    info.description =
                        pango_font_description_copy(def->font_desc);
                    gs_objects.m_fontSystem = wxFont(info);
                }
                else
                {
                    GtkSettings *settings = gtk_settings_get_default();
                    gchar *font_name = NULL;
                    g_object_get ( settings,
                                   "gtk-font-name",
                                   &font_name,
                                   NULL);
                    if (!font_name)
                        gs_objects.m_fontSystem = wxFont( 12, wxSWISS, wxNORMAL, wxNORMAL );
                    else
                        gs_objects.m_fontSystem = wxFont(wxString::FromAscii(font_name));
                    g_free (font_name);
                }
                gtk_widget_destroy( widget );
            }
            return gs_objects.m_fontSystem;
        }

        default:
            return wxNullFont;
    }
}

int wxSystemSettingsNative::GetMetric( wxSystemMetric index, wxWindow* win )
{
    bool success = false;

    guchar *data = NULL;
    GdkWindow *window = NULL;
    if(win && GTK_WIDGET_REALIZED(win->GetHandle()))
        window = win->GetHandle()->window;

    switch (index)
    {
        case wxSYS_BORDER_X:
        case wxSYS_BORDER_Y:
        case wxSYS_EDGE_X:
        case wxSYS_EDGE_Y:
        case wxSYS_FRAMESIZE_X:
        case wxSYS_FRAMESIZE_Y:
            // If a window is specified/realized, and it is a toplevel window, we can query from wm.
            // The returned border thickness is outside the client area in that case.
            if (window)
            {
                wxTopLevelWindow *tlw = wxDynamicCast(win, wxTopLevelWindow);
                if (!tlw)
                    return -1; // not a tlw, not sure how to approach
                else
                {
                    // Check if wm supports frame extents - we can't know
                    // the border widths if it does not.
#if GTK_CHECK_VERSION(2,2,0)
                    if (!gtk_check_version(2,2,0))
                    {
                        if (!gdk_x11_screen_supports_net_wm_hint(
                                gdk_drawable_get_screen(window),
                                gdk_atom_intern("_NET_FRAME_EXTENTS", false) ) )
                            return -1;
                    }
                    else
#endif
                    {
                        if (!gdk_net_wm_supports(gdk_atom_intern("_NET_FRAME_EXTENTS", false)))
                            return -1;
                    }

                    // Get the frame extents from the windowmanager.
                    // In most cases the top extent is the titlebar, so we use the bottom extent
                    // for the heights.

                    Atom type;
                    gint format;
                    gulong nitems;

#if GTK_CHECK_VERSION(2,2,0)
                    if (!gtk_check_version(2,2,0))
                    {
                        gulong bytes_after;
                        success = (XGetWindowProperty (GDK_DISPLAY_XDISPLAY(gdk_drawable_get_display(window)),
                                            GDK_WINDOW_XWINDOW(window),
                                            gdk_x11_get_xatom_by_name_for_display (
                                                    gdk_drawable_get_display(window),
                                                    "_NET_FRAME_EXTENTS" ),
                                            0, // left, right, top, bottom, CARDINAL[4]/32
                                            G_MAXLONG, // size of long
                                            false, // do not delete property
                                            XA_CARDINAL, // 32 bit
                                            &type, &format, &nitems, &bytes_after, &data
                                           ) == Success);
                    }
#endif
                    if (success)
                    {
                        int border_return = -1;

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

                        if (data)
                            XFree(data);

                        return border_return;
                    }
                }
            }

            return -1; // no window specified

        case wxSYS_CURSOR_X:
        case wxSYS_CURSOR_Y:
#ifdef __WXGTK24__
            if (!gtk_check_version(2,4,0))
            {
                if (window)
                    return gdk_display_get_default_cursor_size(gdk_drawable_get_display(window));
                else
                    return gdk_display_get_default_cursor_size(gdk_display_get_default());
            }
            else
#endif
                return 16;

        case wxSYS_DCLICK_X:
        case wxSYS_DCLICK_Y:
            gint dclick_distance;
#if GTK_CHECK_VERSION(2,2,0)
            if (window && !gtk_check_version(2,2,0))
                g_object_get(gtk_settings_get_for_screen(gdk_drawable_get_screen(window)),
                                "gtk-double-click-distance", &dclick_distance, NULL);
            else
#endif
                g_object_get(gtk_settings_get_default(),
                                "gtk-double-click-distance", &dclick_distance, NULL);

            return dclick_distance * 2;

        case wxSYS_DRAG_X:
        case wxSYS_DRAG_Y:
            gint drag_threshold;
#if GTK_CHECK_VERSION(2,2,0)
            if (window && !gtk_check_version(2,2,0))
            {
                g_object_get(
                        gtk_settings_get_for_screen(gdk_drawable_get_screen(window)),
                        "gtk-dnd-drag-threshold",
                        &drag_threshold, NULL);
            }
            else
#endif
            {
                g_object_get(gtk_settings_get_default(),
                             "gtk-dnd-drag-threshold", &drag_threshold, NULL);
            }

            // 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.

            Atom type;
            gint format;
            gulong nitems;

#if GTK_CHECK_VERSION(2,2,0)
            if (!gtk_check_version(2,2,0))
            {
                gulong bytes_after;
                success = (XGetWindowProperty (GDK_DISPLAY_XDISPLAY(gdk_drawable_get_display(window)),
                                    GDK_WINDOW_XWINDOW(window),
                                    gdk_x11_get_xatom_by_name_for_display (
                                            gdk_drawable_get_display(window),
                                            "_NET_FRAME_EXTENTS" ),
                                    0, // left, right, top, bottom, CARDINAL[4]/32
                                    G_MAXLONG, // size of long
                                    false, // do not delete property
                                    XA_CARDINAL, // 32 bit
                                    &type, &format, &nitems, &bytes_after, &data
                                   ) == Success);
            }
#endif
            if (success)
            {
                int caption_height = -1;

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

                if (data)
                    XFree(data);

                return caption_height;
            }

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

            return -1;

        case wxSYS_PENWINDOWS_PRESENT:
            // No MS Windows for Pen computing extension available in X11 based gtk+.
            return 0;

        default:
            return -1;   // metric is unknown
    }
}

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	// Using gtk_list_new, which is deprecated since GTK2
	24	// Using gtk_object_sink, which is deprecated since GTK+-2.9.0
	25	#ifdef GTK_DISABLE_DEPRECATED
	26	#undef GTK_DISABLE_DEPRECATED
	27	#endif
	28
	29	#include <gdk/gdk.h>
	30	#include <gdk/gdkx.h>
	31	#include <gdk/gdkprivate.h>
	32	#include <gtk/gtk.h>
	33
	34	#include <X11/Xatom.h>
	35
	36	#define SHIFT (8*(sizeof(short int)-sizeof(char)))
	37
	38	// ----------------------------------------------------------------------------
	39	// wxSystemObjects
	40	// ----------------------------------------------------------------------------
	41
	42	struct wxSystemObjects
	43	{
	44	wxColour m_colBtnFace,
	45	m_colBtnShadow,
	46	m_colBtnHighlight,
	47	m_colHighlight,
	48	m_colHighlightText,
	49	m_colListBox,
	50	m_colBtnText,
	51	m_colMenuItemHighlight,
	52	m_colTooltip,
	53	m_colTooltipText;
	54
	55	wxFont m_fontSystem;
	56	};
	57
	58	static wxSystemObjects gs_objects;
	59
	60	// ----------------------------------------------------------------------------
	61	// wxSystemSettings implementation
	62	// ----------------------------------------------------------------------------
	63
	64	// kind of widget to use in GetColourFromGTKWidget
	65	enum wxGtkWidgetType
	66	{
	67	wxGTK_BUTTON,
	68	wxGTK_LIST,
	69	wxGTK_MENUITEM
	70	};
	71
	72	// the colour we need
	73	enum wxGtkColourType
	74	{
	75	wxGTK_FG,
	76	wxGTK_BG,
	77	wxGTK_BASE
	78	};
	79
	80	// wxSystemSettings::GetColour() helper: get the colours from a GTK+
	81	// widget style, return true if we did get them, false to use defaults
	82	static bool GetColourFromGTKWidget(int& red, int& green, int& blue,
	83	wxGtkWidgetType type = wxGTK_BUTTON,
	84	GtkStateType state = GTK_STATE_NORMAL,
	85	wxGtkColourType colour = wxGTK_BG)
	86	{
	87	GtkWidget *widget;
	88	switch ( type )
	89	{
	90	default:
	91	wxFAIL_MSG( _T("unexpected GTK widget type") );
	92	// fall through
	93
	94	case wxGTK_BUTTON:
	95	widget = gtk_button_new();
	96	break;
	97
	98	case wxGTK_LIST:
	99	widget = gtk_list_new();
	100	break;
	101
	102	case wxGTK_MENUITEM:
	103	widget = gtk_menu_item_new();
	104	}
	105
	106	GtkStyle *def = gtk_rc_get_style( widget );
	107	if ( !def )
	108	def = gtk_widget_get_default_style();
	109
	110	bool ok;
	111	if ( def )
	112	{
	113	GdkColor *col;
	114	switch ( colour )
	115	{
	116	default:
	117	wxFAIL_MSG( _T("unexpected GTK colour type") );
	118	// fall through
	119
	120	case wxGTK_FG:
	121	col = def->fg;
	122	break;
	123
	124	case wxGTK_BG:
	125	col = def->bg;
	126	break;
	127
	128	case wxGTK_BASE:
	129	col = def->base;
	130	break;
	131	}
	132
	133	red = col[state].red;
	134	green = col[state].green;
	135	blue = col[state].blue;
	136
	137	ok = true;
	138	}
	139	else
	140	{
	141	ok = false;
	142	}
	143
	144	gtk_widget_destroy( widget );
	145
	146	return ok;
	147	}
	148
	149	static void GetTooltipColors()
	150	{
	151	GtkTooltips* tooltips = gtk_tooltips_new();
	152	gtk_tooltips_force_window(tooltips);
	153	gtk_widget_ensure_style(tooltips->tip_window);
	154	GdkColor c = tooltips->tip_window->style->bg[GTK_STATE_NORMAL];
	155	gs_objects.m_colTooltip = wxColor(c.red >> SHIFT, c.green >> SHIFT, c.blue >> SHIFT);
	156	c = tooltips->tip_window->style->fg[GTK_STATE_NORMAL];
	157	gs_objects.m_colTooltipText = wxColor(c.red >> SHIFT, c.green >> SHIFT, c.blue >> SHIFT);
	158	gtk_object_sink(wx_reinterpret_cast(GtkObject*, tooltips));
	159	}
	160
	161	wxColour wxSystemSettingsNative::GetColour( wxSystemColour index )
	162	{
	163	switch (index)
	164	{
	165	case wxSYS_COLOUR_SCROLLBAR:
	166	case wxSYS_COLOUR_BACKGROUND:
	167	case wxSYS_COLOUR_INACTIVECAPTION:
	168	case wxSYS_COLOUR_MENU:
	169	case wxSYS_COLOUR_WINDOWFRAME:
	170	case wxSYS_COLOUR_ACTIVEBORDER:
	171	case wxSYS_COLOUR_INACTIVEBORDER:
	172	case wxSYS_COLOUR_BTNFACE:
	173	case wxSYS_COLOUR_MENUBAR:
	174	case wxSYS_COLOUR_3DLIGHT:
	175	if (!gs_objects.m_colBtnFace.Ok())
	176	{
	177	int red, green, blue;
	178	if ( !GetColourFromGTKWidget(red, green, blue) )
	179	{
	180	red =
	181	green = 0;
	182	blue = 0x9c40;
	183	}
	184
	185	gs_objects.m_colBtnFace = wxColour( red >> SHIFT,
	186	green >> SHIFT,
	187	blue >> SHIFT );
	188	}
	189	return gs_objects.m_colBtnFace;
	190
	191	case wxSYS_COLOUR_WINDOW:
	192	return *wxWHITE;
	193
	194	case wxSYS_COLOUR_3DDKSHADOW:
	195	return *wxBLACK;
	196
	197	case wxSYS_COLOUR_GRAYTEXT:
	198	case wxSYS_COLOUR_BTNSHADOW:
	199	//case wxSYS_COLOUR_3DSHADOW:
	200	if (!gs_objects.m_colBtnShadow.Ok())
	201	{
	202	wxColour faceColour(GetColour(wxSYS_COLOUR_3DFACE));
	203	gs_objects.m_colBtnShadow =
	204	wxColour((unsigned char) (faceColour.Red() * 0.666),
	205	(unsigned char) (faceColour.Green() * 0.666),
	206	(unsigned char) (faceColour.Blue() * 0.666));
	207	}
	208
	209	return gs_objects.m_colBtnShadow;
	210
	211	case wxSYS_COLOUR_3DHIGHLIGHT:
	212	//case wxSYS_COLOUR_BTNHIGHLIGHT:
	213	return * wxWHITE;
	214
	215	case wxSYS_COLOUR_HIGHLIGHT:
	216	if (!gs_objects.m_colHighlight.Ok())
	217	{
	218	int red, green, blue;
	219	if ( !GetColourFromGTKWidget(red, green, blue,
	220	wxGTK_BUTTON,
	221	GTK_STATE_SELECTED) )
	222	{
	223	red =
	224	green = 0;
	225	blue = 0x9c40;
	226	}
	227
	228	gs_objects.m_colHighlight = wxColour( red >> SHIFT,
	229	green >> SHIFT,
	230	blue >> SHIFT );
	231	}
	232	return gs_objects.m_colHighlight;
	233
	234	case wxSYS_COLOUR_LISTBOX:
	235	if (!gs_objects.m_colListBox.Ok())
	236	{
	237	int red, green, blue;
	238	if ( GetColourFromGTKWidget(red, green, blue,
	239	wxGTK_LIST,
	240	GTK_STATE_NORMAL,
	241	wxGTK_BASE) )
	242	{
	243	gs_objects.m_colListBox = wxColour( red >> SHIFT,
	244	green >> SHIFT,
	245	blue >> SHIFT );
	246	}
	247	else
	248	{
	249	gs_objects.m_colListBox = wxColour(*wxWHITE);
	250	}
	251	}
	252	return gs_objects.m_colListBox;
	253
	254	case wxSYS_COLOUR_MENUTEXT:
	255	case wxSYS_COLOUR_WINDOWTEXT:
	256	case wxSYS_COLOUR_CAPTIONTEXT:
	257	case wxSYS_COLOUR_INACTIVECAPTIONTEXT:
	258	case wxSYS_COLOUR_BTNTEXT:
	259	if (!gs_objects.m_colBtnText.Ok())
	260	{
	261	int red, green, blue;
	262	if ( !GetColourFromGTKWidget(red, green, blue,
	263	wxGTK_BUTTON,
	264	GTK_STATE_NORMAL,
	265	wxGTK_FG) )
	266	{
	267	red =
	268	green =
	269	blue = 0;
	270	}
	271
	272	gs_objects.m_colBtnText = wxColour( red >> SHIFT,
	273	green >> SHIFT,
	274	blue >> SHIFT );
	275	}
	276	return gs_objects.m_colBtnText;
	277
	278	case wxSYS_COLOUR_INFOBK:
	279	if (!gs_objects.m_colTooltip.Ok()) {
	280	GetTooltipColors();
	281	}
	282	return gs_objects.m_colTooltip;
	283
	284	case wxSYS_COLOUR_INFOTEXT:
	285	if (!gs_objects.m_colTooltipText.Ok()) {
	286	GetTooltipColors();
	287	}
	288	return gs_objects.m_colTooltipText;
	289
	290	case wxSYS_COLOUR_HIGHLIGHTTEXT:
	291	if (!gs_objects.m_colHighlightText.Ok())
	292	{
	293	wxColour hclr = GetColour(wxSYS_COLOUR_HIGHLIGHT);
	294	if (hclr.Red() > 200 && hclr.Green() > 200 && hclr.Blue() > 200)
	295	gs_objects.m_colHighlightText = wxColour(*wxBLACK);
	296	else
	297	gs_objects.m_colHighlightText = wxColour(*wxWHITE);
	298	}
	299	return gs_objects.m_colHighlightText;
	300
	301	case wxSYS_COLOUR_APPWORKSPACE:
	302	return *wxWHITE; // ?
	303
	304	case wxSYS_COLOUR_ACTIVECAPTION:
	305	case wxSYS_COLOUR_MENUHILIGHT:
	306	if (!gs_objects.m_colMenuItemHighlight.Ok())
	307	{
	308	int red, green, blue;
	309	if ( !GetColourFromGTKWidget(red, green, blue,
	310	wxGTK_MENUITEM,
	311	GTK_STATE_SELECTED,
	312	wxGTK_BG) )
	313	{
	314	red =
	315	green =
	316	blue = 0;
	317	}
	318
	319	gs_objects.m_colMenuItemHighlight = wxColour( red >> SHIFT,
	320	green >> SHIFT,
	321	blue >> SHIFT );
	322	}
	323	return gs_objects.m_colMenuItemHighlight;
	324
	325	case wxSYS_COLOUR_HOTLIGHT:
	326	case wxSYS_COLOUR_GRADIENTACTIVECAPTION:
	327	case wxSYS_COLOUR_GRADIENTINACTIVECAPTION:
	328	// TODO
	329	return *wxBLACK;
	330
	331	case wxSYS_COLOUR_MAX:
	332	default:
	333	wxFAIL_MSG( _T("unknown system colour index") );
	334	}
	335
	336	return *wxWHITE;
	337	}
	338
	339	wxFont wxSystemSettingsNative::GetFont( wxSystemFont index )
	340	{
	341	switch (index)
	342	{
	343	case wxSYS_OEM_FIXED_FONT:
	344	case wxSYS_ANSI_FIXED_FONT:
	345	case wxSYS_SYSTEM_FIXED_FONT:
	346	{
	347	return *wxNORMAL_FONT;
	348	}
	349	case wxSYS_ANSI_VAR_FONT:
	350	case wxSYS_SYSTEM_FONT:
	351	case wxSYS_DEVICE_DEFAULT_FONT:
	352	case wxSYS_DEFAULT_GUI_FONT:
	353	{
	354	if (!gs_objects.m_fontSystem.Ok())
	355	{
	356	GtkWidget *widget = gtk_button_new();
	357	GtkStyle *def = gtk_rc_get_style( widget );
	358	if ( !def \|\| !def->font_desc )
	359	def = gtk_widget_get_default_style();
	360	if ( def && def->font_desc )
	361	{
	362	wxNativeFontInfo info;
	363	info.description =
	364	pango_font_description_copy(def->font_desc);
	365	gs_objects.m_fontSystem = wxFont(info);
	366	}
	367	else
	368	{
	369	GtkSettings *settings = gtk_settings_get_default();
	370	gchar *font_name = NULL;
	371	g_object_get ( settings,
	372	"gtk-font-name",
	373	&font_name,
	374	NULL);
	375	if (!font_name)
	376	gs_objects.m_fontSystem = wxFont( 12, wxSWISS, wxNORMAL, wxNORMAL );
	377	else
	378	gs_objects.m_fontSystem = wxFont(wxString::FromAscii(font_name));
	379	g_free (font_name);
	380	}
	381	gtk_widget_destroy( widget );
	382	}
	383	return gs_objects.m_fontSystem;
	384	}
	385
	386	default:
	387	return wxNullFont;
	388	}
	389	}
	390
	391	int wxSystemSettingsNative::GetMetric( wxSystemMetric index, wxWindow* win )
	392	{
	393	bool success = false;
	394
	395	guchar *data = NULL;
	396	GdkWindow *window = NULL;
	397	if(win && GTK_WIDGET_REALIZED(win->GetHandle()))
	398	window = win->GetHandle()->window;
	399
	400	switch (index)
	401	{
	402	case wxSYS_BORDER_X:
	403	case wxSYS_BORDER_Y:
	404	case wxSYS_EDGE_X:
	405	case wxSYS_EDGE_Y:
	406	case wxSYS_FRAMESIZE_X:
	407	case wxSYS_FRAMESIZE_Y:
	408	// If a window is specified/realized, and it is a toplevel window, we can query from wm.
	409	// The returned border thickness is outside the client area in that case.
	410	if (window)
	411	{
	412	wxTopLevelWindow *tlw = wxDynamicCast(win, wxTopLevelWindow);
	413	if (!tlw)
	414	return -1; // not a tlw, not sure how to approach
	415	else
	416	{
	417	// Check if wm supports frame extents - we can't know
	418	// the border widths if it does not.
	419	#if GTK_CHECK_VERSION(2,2,0)
	420	if (!gtk_check_version(2,2,0))
	421	{
	422	if (!gdk_x11_screen_supports_net_wm_hint(
	423	gdk_drawable_get_screen(window),
	424	gdk_atom_intern("_NET_FRAME_EXTENTS", false) ) )
	425	return -1;
	426	}
	427	else
	428	#endif
	429	{
	430	if (!gdk_net_wm_supports(gdk_atom_intern("_NET_FRAME_EXTENTS", false)))
	431	return -1;
	432	}
	433
	434	// Get the frame extents from the windowmanager.
	435	// In most cases the top extent is the titlebar, so we use the bottom extent
	436	// for the heights.
	437
	438	Atom type;
	439	gint format;
	440	gulong nitems;
	441
	442	#if GTK_CHECK_VERSION(2,2,0)
	443	if (!gtk_check_version(2,2,0))
	444	{
	445	gulong bytes_after;
	446	success = (XGetWindowProperty (GDK_DISPLAY_XDISPLAY(gdk_drawable_get_display(window)),
	447	GDK_WINDOW_XWINDOW(window),
	448	gdk_x11_get_xatom_by_name_for_display (
	449	gdk_drawable_get_display(window),
	450	"_NET_FRAME_EXTENTS" ),
	451	0, // left, right, top, bottom, CARDINAL[4]/32
	452	G_MAXLONG, // size of long
	453	false, // do not delete property
	454	XA_CARDINAL, // 32 bit
	455	&type, &format, &nitems, &bytes_after, &data
	456	) == Success);
	457	}
	458	#endif
	459	if (success)
	460	{
	461	int border_return = -1;
	462
	463	if ((type == XA_CARDINAL) && (format == 32) && (nitems >= 4) && (data))
	464	{
	465	long *borders;
	466	borders = (long*)data;
	467	switch(index)
	468	{
	469	case wxSYS_BORDER_X:
	470	case wxSYS_EDGE_X:
	471	case wxSYS_FRAMESIZE_X:
	472	border_return = borders[1]; // width of right extent
	473	break;
	474	default:
	475	border_return = borders[3]; // height of bottom extent
	476	break;
	477	}
	478	}
	479
	480	if (data)
	481	XFree(data);
	482
	483	return border_return;
	484	}
	485	}
	486	}
	487
	488	return -1; // no window specified
	489
	490	case wxSYS_CURSOR_X:
	491	case wxSYS_CURSOR_Y:
	492	#ifdef __WXGTK24__
	493	if (!gtk_check_version(2,4,0))
	494	{
	495	if (window)
	496	return gdk_display_get_default_cursor_size(gdk_drawable_get_display(window));
	497	else
	498	return gdk_display_get_default_cursor_size(gdk_display_get_default());
	499	}
	500	else
	501	#endif
	502	return 16;
	503
	504	case wxSYS_DCLICK_X:
	505	case wxSYS_DCLICK_Y:
	506	gint dclick_distance;
	507	#if GTK_CHECK_VERSION(2,2,0)
	508	if (window && !gtk_check_version(2,2,0))
	509	g_object_get(gtk_settings_get_for_screen(gdk_drawable_get_screen(window)),
	510	"gtk-double-click-distance", &dclick_distance, NULL);
	511	else
	512	#endif
	513	g_object_get(gtk_settings_get_default(),
	514	"gtk-double-click-distance", &dclick_distance, NULL);
	515
	516	return dclick_distance * 2;
	517
	518	case wxSYS_DRAG_X:
	519	case wxSYS_DRAG_Y:
	520	gint drag_threshold;
	521	#if GTK_CHECK_VERSION(2,2,0)
	522	if (window && !gtk_check_version(2,2,0))
	523	{
	524	g_object_get(
	525	gtk_settings_get_for_screen(gdk_drawable_get_screen(window)),
	526	"gtk-dnd-drag-threshold",
	527	&drag_threshold, NULL);
	528	}
	529	else
	530	#endif
	531	{
	532	g_object_get(gtk_settings_get_default(),
	533	"gtk-dnd-drag-threshold", &drag_threshold, NULL);
	534	}
	535
	536	// The correct thing here would be to double the value
	537	// since that is what the API wants. But the values
	538	// are much bigger under GNOME than under Windows and
	539	// just seem to much in many cases to be useful.
	540	// drag_threshold *= 2;
	541
	542	return drag_threshold;
	543
	544	// MBN: ditto for icons
	545	case wxSYS_ICON_X: return 32;
	546	case wxSYS_ICON_Y: return 32;
	547
	548	case wxSYS_SCREEN_X:
	549	#if GTK_CHECK_VERSION(2,2,0)
	550	if (window && !gtk_check_version(2,2,0))
	551	return gdk_screen_get_width(gdk_drawable_get_screen(window));
	552	else
	553	#endif
	554	return gdk_screen_width();
	555
	556	case wxSYS_SCREEN_Y:
	557	#if GTK_CHECK_VERSION(2,2,0)
	558	if (window && !gtk_check_version(2,2,0))
	559	return gdk_screen_get_height(gdk_drawable_get_screen(window));
	560	else
	561	#endif
	562	return gdk_screen_height();
	563
	564	case wxSYS_HSCROLL_Y: return 15;
	565	case wxSYS_VSCROLL_X: return 15;
	566
	567	case wxSYS_CAPTION_Y:
	568	if (!window)
	569	// No realized window specified, and no implementation for that case yet.
	570	return -1;
	571
	572	// Check if wm supports frame extents - we can't know the caption height if it does not.
	573	#if GTK_CHECK_VERSION(2,2,0)
	574	if (!gtk_check_version(2,2,0))
	575	{
	576	if (!gdk_x11_screen_supports_net_wm_hint(
	577	gdk_drawable_get_screen(window),
	578	gdk_atom_intern("_NET_FRAME_EXTENTS", false) ) )
	579	return -1;
	580	}
	581	else
	582	#endif
	583	{
	584	if (!gdk_net_wm_supports(gdk_atom_intern("_NET_FRAME_EXTENTS", false)))
	585	return -1;
	586	}
	587
	588	wxASSERT_MSG( wxDynamicCast(win, wxTopLevelWindow),
	589	wxT("Asking for caption height of a non toplevel window") );
	590
	591	// Get the height of the top windowmanager border.
	592	// This is the titlebar in most cases. The titlebar might be elsewhere, and
	593	// we could check which is the thickest wm border to decide on which side the
	594	// titlebar is, but this might lead to interesting behaviours in used code.
	595	// Reconsider when we have a way to report to the user on which side it is.
	596
	597	Atom type;
	598	gint format;
	599	gulong nitems;
	600
	601	#if GTK_CHECK_VERSION(2,2,0)
	602	if (!gtk_check_version(2,2,0))
	603	{
	604	gulong bytes_after;
	605	success = (XGetWindowProperty (GDK_DISPLAY_XDISPLAY(gdk_drawable_get_display(window)),
	606	GDK_WINDOW_XWINDOW(window),
	607	gdk_x11_get_xatom_by_name_for_display (
	608	gdk_drawable_get_display(window),
	609	"_NET_FRAME_EXTENTS" ),
	610	0, // left, right, top, bottom, CARDINAL[4]/32
	611	G_MAXLONG, // size of long
	612	false, // do not delete property
	613	XA_CARDINAL, // 32 bit
	614	&type, &format, &nitems, &bytes_after, &data
	615	) == Success);
	616	}
	617	#endif
	618	if (success)
	619	{
	620	int caption_height = -1;
	621
	622	if ((type == XA_CARDINAL) && (format == 32) && (nitems >= 3) && (data))
	623	{
	624	long *borders;
	625	borders = (long*)data;
	626	caption_height = borders[2]; // top frame extent
	627	}
	628
	629	if (data)
	630	XFree(data);
	631
	632	return caption_height;
	633	}
	634
	635	// Try a default approach without a window pointer, if possible
	636	// ...
	637
	638	return -1;
	639
	640	case wxSYS_PENWINDOWS_PRESENT:
	641	// No MS Windows for Pen computing extension available in X11 based gtk+.
	642	return 0;
	643
	644	default:
	645	return -1; // metric is unknown
	646	}
	647	}
	648
	649	bool wxSystemSettingsNative::HasFeature(wxSystemFeature index)
	650	{
	651	switch (index)
	652	{
	653	case wxSYS_CAN_ICONIZE_FRAME:
	654	return false;
	655
	656	case wxSYS_CAN_DRAW_FRAME_DECORATIONS:
	657	return true;
	658
	659	default:
	660	return false;
	661	}
	662	}