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- /* External client, raw Xlib version.
- Copyright (C) 1993, 1994 Sun Microsystems, Inc.
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
-
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the Free
- Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* Synched up with: Not in FSF. */
-
- /* Written by Ben Wing, February 1994. */
-
- #include <X11/Xlib.h>
- #include <X11/Xresource.h>
- #include <X11/Xutil.h>
- #include "extw-Xlib.h"
-
- /* this is not a perfect solution, but otherwise we have to include all
- of the Xt junk */
-
- #define XtGeometryNo 1
-
- #if (XlibSpecificationRelease < 5)
- # define XPointer char *
- #endif
-
- static int context_inited;
- static XContext focus_context;
-
- /* does the specified window have the focus, given that the pointer just
- entered (or left) the window (according to enter_p)? This question
- does not have an obvious answer in X. (Basically, X sucks.) */
-
- static int window_has_focus_p (Display *display, Window win, int enter_p)
- {
- Window focuswin;
- int dummy;
-
- XGetInputFocus(display, &focuswin, &dummy);
- if (focuswin == PointerRoot)
- return enter_p;
- if (focuswin == win)
- return True;
- if (!enter_p)
- return False;
- do
- {
- Status st;
- Window root_win, parent_win;
- Window *child_win;
- int nchild;
-
- st = XQueryTree(display, win, &root_win, &parent_win, &child_win,
- &nchild);
- if (!st)
- return False;
- XFree((XPointer)child_win);
- if (parent_win == focuswin)
- return True;
- if (parent_win == root_win)
- return False;
- win = parent_win;
- }
- while (1);
- }
-
-
- /* External entry points when using XLib directly */
-
- void ExternalClientInitialize (Display *display, Window win)
- {
- extw_initialize_atoms(display);
- extw_which_side = extw_client_send;
- if (!context_inited)
- {
- focus_context = XUniqueContext();
- context_inited = 1;
- }
- XSaveContext(display, win, focus_context, 0);
- XSelectInput(display, win, EnterWindowMask | LeaveWindowMask |
- FocusChangeMask);
- }
-
- void ExternalClientEventHandler (Display *display, Window win, XEvent *event)
- {
- if (win != event->xany.window)
- return;
-
- if (event->type == ClientMessage &&
- event->xclient.message_type == a_EXTW_NOTIFY &&
- event->xclient.data.l[0] == extw_shell_send)
- switch (event->xclient.data.l[1]) {
- case extw_notify_gm:
- /* for the moment, just refuse geometry requests. */
- extw_send_notify_3(display, win, extw_notify_gm, XtGeometryNo, 0, 0);
- break;
-
- case extw_notify_init:
- extw_send_notify_3(display, win, extw_notify_init, EXTW_TYPE_XLIB, 0, 0);
- break;
-
- case extw_notify_end:
- XClearArea(display, win, 0, 0, 0, 0, True);
- break;
- }
- else
- {
- int focus_status;
- XPointer current_focus;
-
- if (event->type == FocusIn)
- focus_status = 1;
- else if (event->type == FocusOut)
- focus_status = 0;
- else if (event->type == EnterNotify &&
- event->xcrossing.detail != NotifyInferior)
- focus_status = window_has_focus_p(display, win, 1);
- else if (event->type == LeaveNotify &&
- event->xcrossing.detail != NotifyInferior)
- focus_status = window_has_focus_p(display, win, 0);
- else
- return;
- XFindContext(display, win, focus_context, ¤t_focus);
- if (focus_status != (int) current_focus)
- {
- XSaveContext(display, win, focus_context, (XPointer) focus_status);
- extw_send_notify_3(display, win, focus_status ?
- extw_notify_focus_in : extw_notify_focus_out,
- 0, 0, 0);
- }
- }
- }
-