wmlib/event.c

   1 /* event.c - WindowMaker event handler
   2  *
   3  * WMlib - WindowMaker application programming interface
   4  *
   5  * Copyright (C) 1997-2003 Alfredo K. Kojima
   6  *
   7  *  This library is free software; you can redistribute it and/or
   8  *  modify it under the terms of the GNU Library General Public
   9  *  License as published by the Free Software Foundation; either
  10  *  version 2 of the License, or (at your option) any later version.
  11  *
  12  *  This library is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  *  Library General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU Library General Public
  18  *  License along with this library; if not, write to the Free
  19  *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include <stdlib.h>
  23 #include <stdio.h>
  24 #include <X11/Xlib.h>
  25 #include <X11/Xutil.h>
  26
  27 #include "WMaker.h"
  28 #include "app.h"
  29 #include "menu.h"
  30
  31 static Atom _XA_WINDOWMAKER_MENU = 0;
  32
  33 enum {
  34         wmSelectItem = 1
  35 };
  36
  37 static wmMenuEntry *findEntry(WMMenu * menu, int tag)
  38 {
  39         wmMenuEntry *entry = menu->first;
  40
  41         while (entry) {
  42                 if (entry->tag == tag) {
  43                         return entry;
  44                 }
  45                 if (entry->cascade) {
  46                         wmMenuEntry *tmp;
  47                         tmp = findEntry(entry->cascade, tag);
  48                         if (tmp)
  49                                 return tmp;
  50                 }
  51                 entry = entry->next;
  52         }
  53         return NULL;
  54 }
  55
  56 static void wmHandleMenuEvents(WMAppContext * app, XEvent * event)
  57 {
  58         wmMenuEntry *entry;
  59
  60         switch (event->xclient.data.l[1]) {
  61         case wmSelectItem:
  62                 entry = findEntry(app->main_menu, event->xclient.data.l[2]);
  63                 if (entry && entry->callback) {
  64                         (*entry->callback) (entry->clientData, event->xclient.data.l[2], event->xclient.data.l[0]);
  65                 }
  66                 break;
  67         }
  68 }
  69
  70 int WMProcessEvent(WMAppContext * app, XEvent * event)
  71 {
  72         int proc = False;
  73         if (!_XA_WINDOWMAKER_MENU) {
  74                 _XA_WINDOWMAKER_MENU = XInternAtom(app->dpy, "_WINDOWMAKER_MENU", False);
  75         }
  76         switch (event->type) {
  77         case ClientMessage:
  78                 if (event->xclient.format == 32
  79                     && event->xclient.message_type == _XA_WINDOWMAKER_MENU
  80                     && event->xclient.window == app->main_window) {
  81                         wmHandleMenuEvents(app, event);
  82                         proc = True;
  83                 }
  84         }
  85         return proc;
  86 }