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., 51 Franklin St, Fifth Floor, Boston,
  20  *  MA 02110-1301, USA.
  21  */
  22
  23 #include <stdlib.h>
  24 #include <stdio.h>
  25 #include <X11/Xlib.h>
  26 #include <X11/Xutil.h>
  27
  28 #include "WMaker.h"
  29 #include "app.h"
  30 #include "menu.h"
  31
  32 static Atom _XA_WINDOWMAKER_MENU = 0;
  33
  34 enum {
  35         wmSelectItem = 1
  36 };
  37
  38 static wmMenuEntry *findEntry(WMMenu * menu, int tag)
  39 {
  40         wmMenuEntry *entry = menu->first;
  41
  42         while (entry) {
  43                 if (entry->tag == tag) {
  44                         return entry;
  45                 }
  46                 if (entry->cascade) {
  47                         wmMenuEntry *tmp;
  48                         tmp = findEntry(entry->cascade, tag);
  49                         if (tmp)
  50                                 return tmp;
  51                 }
  52                 entry = entry->next;
  53         }
  54         return NULL;
  55 }
  56
  57 static void wmHandleMenuEvents(WMAppContext * app, XEvent * event)
  58 {
  59         wmMenuEntry *entry;
  60
  61         switch (event->xclient.data.l[1]) {
  62         case wmSelectItem:
  63                 entry = findEntry(app->main_menu, event->xclient.data.l[2]);
  64                 if (entry && entry->callback) {
  65                         (*entry->callback) (entry->clientData, event->xclient.data.l[2], event->xclient.data.l[0]);
  66                 }
  67                 break;
  68         }
  69 }
  70
  71 int WMProcessEvent(WMAppContext * app, XEvent * event)
  72 {
  73         int proc = False;
  74         if (!_XA_WINDOWMAKER_MENU) {
  75                 _XA_WINDOWMAKER_MENU = XInternAtom(app->dpy, "_WINDOWMAKER_MENU", False);
  76         }
  77         switch (event->type) {
  78         case ClientMessage:
  79                 if (event->xclient.format == 32
  80                     && event->xclient.message_type == _XA_WINDOWMAKER_MENU
  81                     && event->xclient.window == app->main_window) {
  82                         wmHandleMenuEvents(app, event);
  83                         proc = True;
  84                 }
  85         }
  86         return proc;
  87 }