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 using std::hex;
  36 using std::dec;
  37
  38 #include "../../src/XAtom.hh"
  39
  40 WindowList _clients;
  41 WindowList::iterator _active = _clients.end();
  42
  43
  44 XWindow &findWindow(const XEvent &e) {
  45   WindowList::iterator it, end = _clients.end();
  46   for (it = _clients.begin(); it != end; ++it)
  47     if (**it == e.xany.window)
  48       break;
  49   assert(it != end);  // this means a client somehow got removed from the
  50                       // list!
  51   return **it;
  52 }
  53
  54
  55 void processEvent(const XEvent &e) {
  56   switch (e.type) {
  57   case PropertyNotify:
  58     if (e.xany.window == _root) {
  59       // root window
  60       if (e.xproperty.atom == _xatom->getAtom(XAtom::net_active_window))
  61         updateActiveWindow();
  62       if (e.xproperty.atom == _xatom->getAtom(XAtom::net_client_list)) {
  63         // catch any window unmaps first
  64         XEvent ev;
  65         if (XCheckTypedWindowEvent(_display, e.xany.window,
  66                                    DestroyNotify, &ev) ||
  67             XCheckTypedWindowEvent(_display, e.xany.window,
  68                                    UnmapNotify, &ev)) {
  69           processEvent(ev);
  70         }
  71
  72         updateClientList();
  73       }
  74     } else {
  75       // a client window
  76       if (e.xproperty.atom == _xatom->getAtom(XAtom::net_wm_state))
  77         findWindow(e).updateState();
  78       if (e.xproperty.atom == _xatom->getAtom(XAtom::net_wm_desktop))
  79         findWindow(e).updateDesktop();
  80     }
  81     break;
  82   case DestroyNotify:
  83   case UnmapNotify:
  84     cout << "unmap notify\n";
  85     findWindow(e).setUnmapped(true);
  86     break;
  87   }
  88 }
  89
  90
  91 // do we want to add this window to our list?
  92 bool doAddWindow(Window window) {
  93   Atom type;
  94   if (! _xatom->getValue(window, XAtom::net_wm_window_type, XAtom::atom,
  95                          type))
  96     return True;
  97
  98   if (type == _xatom->getAtom(XAtom::net_wm_window_type_dock) ||
  99       type == _xatom->getAtom(XAtom::net_wm_window_type_menu))
 100     return False;
 101
 102   return True;
 103 }
 104
 105
 106 void updateClientList() {
 107   WindowList::iterator insert_point = _active;
 108   if (insert_point != _clients.end())
 109     ++insert_point; // get to the item client the focused client
 110
 111   // get the client list from the root window
 112   Window *rootclients = 0;
 113   unsigned long num = (unsigned) -1;
 114   if (! _xatom->getValue(_root, XAtom::net_client_list, XAtom::window, num,
 115                          &rootclients)) {
 116     while (! _clients.empty()) {
 117       delete _clients.front();
 118       _clients.erase(_clients.begin());
 119     }
 120     if (rootclients) delete [] rootclients;
 121     return;
 122   }
 123
 124   WindowList::iterator it, end = _clients.end();
 125   unsigned long i;
 126
 127   // insert new clients after the active window
 128   for (i = 0; i < num; ++i) {
 129     for (it = _clients.begin(); it != end; ++it)
 130       if (**it == rootclients[i])
 131         break;
 132     if (it == end) {  // didn't already exist
 133       if (doAddWindow(rootclients[i])) {
 134         cout << "Added window: 0x" << hex << rootclients[i] << dec << endl;
 135         _clients.insert(insert_point, new XWindow(rootclients[i]));
 136       }
 137     }
 138   }
 139
 140   // remove clients that no longer exist
 141   for (it = _clients.begin(); it != end;) {
 142     WindowList::iterator it2 = it++;
 143     for (i = 0; i < num; ++i)
 144       if (**it2 == rootclients[i])
 145         break;
 146     if (i == num)  { // no longer exists
 147       cout << "Removed window: 0x" << hex << (*it2)->window() << dec << endl;
 148       delete *it2;
 149       _clients.erase(it2);
 150     }
 151   }
 152
 153   if (rootclients) delete [] rootclients;
 154 }
 155
 156
 157 void updateActiveWindow() {
 158   Window a = None;
 159   _xatom->getValue(_root, XAtom::net_active_window, XAtom::window, a);
 160
 161   WindowList::iterator it, end = _clients.end();
 162   for (it = _clients.begin(); it != end; ++it) {
 163     if (**it == a)
 164       break;
 165   }
 166   _active = it;
 167
 168   cout << "Active window is now: ";
 169   if (_active == _clients.end()) cout << "None\n";
 170   else cout << "0x" << hex << (*_active)->window() << dec << endl;
 171 }