C++ GDK_DISPLAY函数代码示例

static void
update_wm_window (void)
{
  Window *xwindow;
  Atom type;
  gint format;
  gulong nitems;
  gulong bytes_after;

  XGetWindowProperty (GDK_DISPLAY (), GDK_ROOT_WINDOW (),
		      XInternAtom (GDK_DISPLAY (), "_NET_SUPPORTING_WM_CHECK", False),
		      0, G_MAXLONG, False, XA_WINDOW, &type, &format,
		      &nitems, &bytes_after, (guchar **) &xwindow);

  if (type != XA_WINDOW)
    {
      wm_window = None;
     return;
    }

  gdk_error_trap_push ();
  XSelectInput (GDK_DISPLAY (), *xwindow, StructureNotifyMask | PropertyChangeMask);
  XSync (GDK_DISPLAY (), False);

  if (gdk_error_trap_pop ())
    {
       XFree (xwindow);
       wm_window = None;
       return;
    }

    wm_window = *xwindow;
    XFree (xwindow);
}

static void
_xim_forward_gdk_event (GdkEventKey *event, X11IC *x11ic)
{
    g_return_if_fail (x11ic != NULL);

    IMForwardEventStruct fe = {0};
    XEvent xkp = {0};

    xkp.xkey.type = (event->type == GDK_KEY_PRESS) ? KeyPress : KeyRelease;
    xkp.xkey.serial = 0L;
    xkp.xkey.send_event = False;
    xkp.xkey.same_screen = True;
    xkp.xkey.display = GDK_DISPLAY();
    xkp.xkey.window =
        x11ic->focus_window ? x11ic->focus_window : x11ic->client_window;
    xkp.xkey.subwindow = None;
    xkp.xkey.root = DefaultRootWindow (GDK_DISPLAY());

    xkp.xkey.time = 0;
    xkp.xkey.state = event->state;
    xkp.xkey.keycode = event->hardware_keycode;

    fe.major_code = XIM_FORWARD_EVENT;
    fe.icid = x11ic->icid;
    fe.connect_id = x11ic->connect_id;
    fe.sync_bit = 0;
    fe.serial_number = 0L;
    fe.event = xkp;

    IMForwardEvent (_xims, (XPointer) & fe);
}

/*
 * detect_get_clipboard - try and get the CLIPBOARD_NAME clipboard
 *
 * Returns TRUE if successfully retrieved and FALSE otherwise.
 */
gboolean detect_get_clipboard()
{
    static const GtkTargetEntry targets[] = { {CLIPBOARD_NAME, 0, 0} };
    gboolean retval = FALSE;
    GtkClipboard *clipboard;
    Atom atom;

    atom = gdk_x11_get_xatom_by_name(CLIPBOARD_NAME);

    XGrabServer(GDK_DISPLAY());

    if (XGetSelectionOwner(GDK_DISPLAY(), atom) != None)
        goto out;

    clipboard = gtk_clipboard_get(gdk_atom_intern(CLIPBOARD_NAME, FALSE));

    if (gtk_clipboard_set_with_data(
                clipboard, targets,
                G_N_ELEMENTS (targets),
                clipboard_get_func,
                clipboard_clear_func, NULL))
        retval = TRUE;

out:
    XUngrabServer (GDK_DISPLAY ());
    gdk_flush ();

    return retval;
}

void
R_gtk_setEventHandler()
{
#ifndef WIN32
  static InputHandler *h = NULL;
  if(!h)
    {
      if (!GDK_DISPLAY())
        error("GDK display not found - please make sure X11 is running");
      h = addInputHandler(R_InputHandlers, ConnectionNumber(GDK_DISPLAY()),
                          R_gtk_eventHandler, -1);
    }
#else
  /* Create a dummy window for receiving messages */
  LPCTSTR class = "cairoDevice";
  HINSTANCE instance = GetModuleHandle(NULL);
  WNDCLASS wndclass = { 0, DefWindowProc, 0, 0, instance, NULL, 0, 0, NULL,
                        class };
  RegisterClass(&wndclass);
  HWND win = CreateWindow(class, NULL, 0, 1, 1, 1, 1, HWND_MESSAGE,
                          NULL, instance, NULL);

  SetTimer(win, CD_TIMER_ID, CD_TIMER_DELAY, (TIMERPROC)R_gtk_timer_proc);
#endif
}

wxGLContext::wxGLContext(wxWindow* win, const wxGLContext* other)
{
    wxGLCanvas *gc = (wxGLCanvas*) win;

    if (wxGLCanvas::GetGLXVersion() >= 13)
    {
        // GLX >= 1.3
        GLXFBConfig *fbc = gc->m_fbc;
        wxCHECK_RET( fbc, _T("invalid GLXFBConfig for OpenGl") );
        m_glContext = glXCreateNewContext( GDK_DISPLAY(), fbc[0], GLX_RGBA_TYPE,
                                           other ? other->m_glContext : None,
                                           GL_TRUE );
    }
    else
    {
        // GLX <= 1.2
        XVisualInfo *vi = (XVisualInfo *) gc->m_vi;
        wxCHECK_RET( vi, _T("invalid visual for OpenGl") );
        m_glContext = glXCreateContext( GDK_DISPLAY(), vi,
                                        other ? other->m_glContext : None,
                                        GL_TRUE );
    }

    if ( !m_glContext )
    {
        wxFAIL_MSG( _T("Couldn't create OpenGl context") );
    }
}

static void
_xim_forward_key_event (X11IC   *x11ic,
                        guint    keyval,
                        guint    keycode,
                        guint    state)
{
    g_return_if_fail (x11ic != NULL);

    IMForwardEventStruct fe = {0};
    XEvent xkp = {0};

    xkp.xkey.type = (state & IBUS_RELEASE_MASK) ? KeyRelease : KeyPress;
    xkp.xkey.serial = 0L;
    xkp.xkey.send_event = False;
    xkp.xkey.same_screen = True;
    xkp.xkey.display = GDK_DISPLAY();
    xkp.xkey.window =
        x11ic->focus_window ? x11ic->focus_window : x11ic->client_window;
    xkp.xkey.subwindow = None;
    xkp.xkey.root = DefaultRootWindow (GDK_DISPLAY());

    xkp.xkey.time = 0;
    xkp.xkey.state = state;
    xkp.xkey.keycode = (keycode == 0) ? 0 : keycode + 8;

    fe.major_code = XIM_FORWARD_EVENT;
    fe.icid = x11ic->icid;
    fe.connect_id = x11ic->connect_id;
    fe.sync_bit = 0;
    fe.serial_number = 0L;
    fe.event = xkp;

    IMForwardEvent (_xims, (XPointer) & fe);
}

static KeyCode grab_key(char *keystring)
{
	KeySym sym;
	KeyCode code;
	gint i;

	if ((sym = XStringToKeysym(keystring)) == NoSymbol)
		return 0;
	if ((code = XKeysymToKeycode(GDK_DISPLAY(), sym)) == 0)
		return 0;

	gdk_error_trap_push();
	for (i = 0; i < ScreenCount(GDK_DISPLAY()); i++) {
		XGrabKey(GDK_DISPLAY(), code,
				AnyModifier, RootWindow(GDK_DISPLAY(),i),
				1, GrabModeAsync, GrabModeAsync);
	}

	gdk_flush();
	if (gdk_error_trap_pop()) {
		g_warning("Couldn't grab %s: another client may already have done so",
				keystring);
		return 0;
	}
	return code;
}

static void
init()
{
    int dummy;

    ENTER;
    if (!XkbQueryExtension(GDK_DISPLAY(), &dummy, &xkb_event_type, &dummy,
            &dummy, &dummy)) {
        ERR("no XKB extension\n");
        exit(1);
    }
    XSetLocaleModifiers("");
    XSetErrorHandler((XErrorHandler) Xerror_handler);
    dpy = GDK_DISPLAY();
    if (chdir(IMGPREFIX)) {
        ERR("can't chdir to %s\n", IMGPREFIX);
        exit(1);
    }
    if (!(default_flag = get_flag("zz"))) {
        ERR("can't load default flag image\n");
        exit(1);
    }
    XkbSelectEventDetails(dpy, XkbUseCoreKbd, XkbStateNotify,
          XkbAllStateComponentsMask, XkbGroupStateMask);
    gdk_window_add_filter(NULL, (GdkFilterFunc)filter, NULL);
    RET();
}

static GdkFilterReturn
filter_mmkeys (GdkXEvent *xevent, GdkEvent *event, gpointer data)
{
	XEvent *xev;
	XKeyEvent *key;

	xev = (XEvent *) xevent;
	if (xev->type != KeyPress) {
		return GDK_FILTER_CONTINUE;
	}

	key = (XKeyEvent *) xevent;

	if (XKeysymToKeycode (GDK_DISPLAY (), XF86XK_AudioPlay) == key->keycode) {
		g_signal_emit (data, signals[MM_PLAYPAUSE], 0, 0);
		return GDK_FILTER_REMOVE;
	} else if (XKeysymToKeycode (GDK_DISPLAY (), XF86XK_AudioPause) == key->keycode) {
		g_signal_emit (data, signals[MM_PLAYPAUSE], 0, 0);
		return GDK_FILTER_REMOVE;
	} else if (XKeysymToKeycode (GDK_DISPLAY (), XF86XK_AudioPrev) == key->keycode) {
		g_signal_emit (data, signals[MM_PREV], 0, 0);
		return GDK_FILTER_REMOVE;
	} else if (XKeysymToKeycode (GDK_DISPLAY (), XF86XK_AudioNext) == key->keycode) {
		g_signal_emit (data, signals[MM_NEXT], 0, 0);
		return GDK_FILTER_REMOVE;
	} else if (XKeysymToKeycode (GDK_DISPLAY (), XF86XK_AudioStop) == key->keycode) {
		g_signal_emit (data, signals[MM_STOP], 0, 0);
		return GDK_FILTER_REMOVE;
	} else {
		return GDK_FILTER_CONTINUE;
	}
}

/* from gdk-pixbuf-xlib-drawabel.c */
static gboolean xlib_window_is_viewable (Window w) {
	XWindowAttributes wa;

	while (w != 0) {
		Window parent, root, *children;
		guint nchildren;

		XGetWindowAttributes (GDK_DISPLAY(), w, &wa);

		if (wa.map_state != IsViewable) {
			return FALSE;
		}

		if (!XQueryTree (GDK_DISPLAY(), w, &root, &parent, &children, &nchildren))
			return FALSE;

		if (nchildren > 0)
			XFree (children);

		if ((parent == root) || (w == root))
			return TRUE;

		w = parent;
	}
	return FALSE;
}

static void
mmkeys_init (MmKeys *object)
{
	int keycodes[N_KEYCODES];
	GdkDisplay *display;
	GdkScreen *screen;
	GdkWindow *root;
	guint i, j;

	display = gdk_display_get_default ();

	keycodes[0] = XKeysymToKeycode (GDK_DISPLAY (), XF86XK_AudioPrev);
	keycodes[1] = XKeysymToKeycode (GDK_DISPLAY (), XF86XK_AudioNext);
	keycodes[2] = XKeysymToKeycode (GDK_DISPLAY (), XF86XK_AudioPlay);
	keycodes[3] = XKeysymToKeycode (GDK_DISPLAY (), XF86XK_AudioPause);
	keycodes[4] = XKeysymToKeycode (GDK_DISPLAY (), XF86XK_AudioStop);

	for (i = 0; i < gdk_display_get_n_screens (display); i++) {
		screen = gdk_display_get_screen (display, i);

		if (screen != NULL) {
			root = gdk_screen_get_root_window (screen);

			for (j = 0; j < N_KEYCODES; j++) {
				if (keycodes[j] > 0)
					grab_mmkey (keycodes[j], root);
			}

			gdk_window_add_filter (root, filter_mmkeys, object);
		}
	}
}

static void
task_get_sizepos(task *t)
{
    Window root, junkwin;
    int rx, ry;
    guint dummy;
    XWindowAttributes win_attributes;

    ENTER;
    if (!XGetWindowAttributes(GDK_DISPLAY(), t->win, &win_attributes)) {
        if (!XGetGeometry (GDK_DISPLAY(), t->win, &root, &t->x, &t->y, &t->w, &t->h,
                  &dummy, &dummy)) {
            t->x = t->y = t->w = t->h = 2;
        }

    } else {
        XTranslateCoordinates (GDK_DISPLAY(), t->win, win_attributes.root,
              -win_attributes.border_width,
              -win_attributes.border_width,
              &rx, &ry, &junkwin);
        t->x = rx;
        t->y = ry;
        t->w = win_attributes.width;
        t->h = win_attributes.height;
        DBG("win=0x%lx WxH=%dx%d\n", t->win,t->w, t->h);
    }
    RET();
}

void ungrab_key (int key_code)
{
	GdkWindow *root=gdk_get_default_root_window();
	
	gdk_error_trap_push ();
	XUngrabKey (GDK_DISPLAY (), key_code, AnyModifier,
			(GDK_WINDOW_XID (root) ? GDK_WINDOW_XID (root) : DefaultRootWindow (GDK_DISPLAY())));
	XUngrabKey (GDK_DISPLAY (), AnyKey, AnyModifier, (GDK_WINDOW_XID (root) ? GDK_WINDOW_XID (root) : DefaultRootWindow (GDK_DISPLAY())));


	gdk_flush ();
	if (gdk_error_trap_pop ()) 
	{
		gchar *error;
		gchar *key;

		key=g_strdup_printf ("%s",(XKeysymToString (XKeycodeToKeysym (GDK_DISPLAY (), key_code, 0)) != NULL)? 
		XKeysymToString (XKeycodeToKeysym (GDK_DISPLAY (),key_code, 0)):
		g_strdup_printf ("%d",key_code));
		
		error = g_strdup_printf
			(_("It seems that another application already has"
			   " access to the multimedia keys.\n"
			   "Key %s couldn't be bound.\n"
			   "Is another daemon already running ?\n"),
			 key);
		show_error(error);
		printf("[Sven][ERROR]:%s",error);
		g_free (key);
		g_free (error);
	}
}

static Pixmap
get_pixmap_prop (Window the_window, char *prop_id)
{
  Atom prop, type;
  int format;
  unsigned long length, after;
  unsigned char *data;


  Window desktop_window = get_desktop_window(the_window);

  if(desktop_window == None)
    desktop_window = GDK_ROOT_WINDOW();

  prop = XInternAtom(GDK_DISPLAY(), prop_id, True);

  if (prop == None)
    return None;

  XGetWindowProperty(GDK_DISPLAY(), desktop_window, prop, 0L, 1L, False,
         AnyPropertyType, &type, &format, &length, &after,
         &data);

  if (type == XA_PIXMAP)
    return *((Pixmap *)data);

  return None;
}

void tray_init(GtkWidget * main_window) {
	gdk_pixbuf_xlib_init (GDK_DISPLAY(), DefaultScreen (GDK_DISPLAY()));

	/* local copy */
	window = main_window;

	gtk_window_get_position(GTK_WINDOW(window), &x_pos, &y_pos);

	tray_create_menu();

	busy_ani = tray_icon_load_animation ("busy.ani", TRUE);
	ready_ani = tray_icon_load_animation("ready.ani", FALSE);

	frame_basic = load_pixmap_as_pixbuf("trayicon/frame_basic.png");

	if (frame_basic)
		tray_icon = egg_tray_icon_new ("xqf", frame_basic);

	if (tray_icon && tray_icon->ready) {
		g_signal_connect(tray_icon, "button_press_event", G_CALLBACK(tray_icon_pressed),tray_icon);

		gtk_widget_hide(window);
	}
	else
		gtk_widget_show(window);
}