Dogcows Code - chaz/openbox/blob - util/epist/process.cc

   1 // -*- mode: C++; indent-tabs-mode: nil; -*-
   2 // process.cc for Epistory - a key handler for NETWM/EWMH window managers.
   3 // Copyright (c) 2002 - 2002 Ben Jansens <ben at orodu.net>
   4 //
   5 // Permission is hereby granted, free of charge, to any person obtaining a
   6 // copy of this software and associated documentation files (the "Software"),
   7 // to deal in the Software without restriction, including without limitation
   8 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9 // and/or sell copies of the Software, and to permit persons to whom the
  10 // Software is furnished to do so, subject to the following conditions:
  11 //
  12 // The above copyright notice and this permission notice shall be included in
  13 // all copies or substantial portions of the Software.
  14 //
  15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21 // DEALINGS IN THE SOFTWARE.
  22
  23 #include "process.hh"
  24 #include "epist.hh"
  25 #include "window.hh"
  26
  27 #ifdef    HAVE_CONFIG_H
  28 #  include "../../config.h"
  29 #endif // HAVE_CONFIG_H
  30
  31 #include <iostream>
  32
  33 using std::cout;
  34 using std::endl;
  35
  36 #include "../../src/XAtom.hh"
  37
  38 WindowList _clients;
  39 WindowList::iterator _active = _clients.end();
  40
  41 void processEvent(const XEvent &e) {
  42   switch (e.type) {
  43   case PropertyNotify:
  44     if (e.xany.window == _root) {
  45       // root window
  46       if (e.xproperty.atom == _xatom->getAtom(XAtom::net_active_window))
  47         updateActiveWindow();
  48       if (e.xproperty.atom == _xatom->getAtom(XAtom::net_client_list))
  49         updateClientList();
  50     } else {
  51       // a client window
  52       WindowList::iterator it, end = _clients.end();
  53       for (it = _clients.begin(); it != end; ++it)
  54         if (*it == e.xproperty.window)
  55           break;
  56       assert(it != end);  // this means a client somehow got removed from the
  57                           // list!
  58       it->updateState();
  59     }
  60     break;
  61   }
  62 }
  63
  64
  65 void updateClientList() {
  66   WindowList::iterator insert_point = _active;
  67   if (insert_point != _clients.end())
  68     ++insert_point; // get to the item client the focused client
  69
  70   // get the client list from the root window
  71   Window *rootclients = 0;
  72   unsigned long num = (unsigned) -1;
  73   if (! _xatom->getValue(_root, XAtom::net_client_list, XAtom::window, num,
  74                          &rootclients)) {
  75     _clients.clear(); // no clients left
  76     if (rootclients) delete [] rootclients;
  77     return;
  78   }
  79
  80   WindowList::iterator it, end = _clients.end();
  81   unsigned long i;
  82
  83   // insert new clients after the active window
  84   for (i = 0; i < num; ++i) {
  85     for (it = _clients.begin(); it != end; ++it)
  86       if (*it == rootclients[i])
  87         break;
  88     if (it == end) {  // didn't already exist
  89       _clients.insert(insert_point, rootclients[i]);
  90       cout << "Added window: " << rootclients[i] << endl;
  91     }
  92   }
  93
  94   // remove clients that no longer exist
  95   for (it = _clients.begin(); it != end;) {
  96     WindowList::iterator it2 = it++;
  97     for (i = 0; i < num; ++i)
  98       if (*it2 == rootclients[i])
  99         break;
 100     if (i == num)  { // no longer exists
 101       _clients.erase(it2);
 102       cout << "Removed window: " << it2->window() << endl;
 103     }
 104   }
 105
 106   if (rootclients) delete [] rootclients;
 107 }
 108
 109
 110 void updateActiveWindow() {
 111   Window a = None;
 112   _xatom->getValue(_root, XAtom::net_active_window, XAtom::window, a);
 113
 114   WindowList::iterator it, end = _clients.end();
 115   for (it = _clients.begin(); it != end; ++it) {
 116     if (*it == a)
 117       break;
 118   }
 119   _active = it;
 120
 121   cout << "Active window is now: ";
 122   if (_active == _clients.end()) cout << "None\n";
 123   else cout << _active->window() << endl;
 124 }