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   if(it == end)
  50     return 0;
  51   return *it;
  52 }
  53
  54
  55 void processEvent(const XEvent &e) {
  56   XWindow *window = 0;
  57   if (e.xany.window != _root) {
  58     window = findWindow(e);  // find the window
  59     assert(window); // we caught an event for a window we don't know about!?
  60   }
  61
  62   switch (e.type) {
  63   case PropertyNotify:
  64     if (e.xany.window == _root) {
  65       // root window
  66       if (e.xproperty.atom == _xatom->getAtom(XAtom::net_active_window))
  67         updateActiveWindow();
  68       if (e.xproperty.atom == _xatom->getAtom(XAtom::net_client_list)) {
  69         // catch any window unmaps first
  70         XEvent ev;
  71         if (XCheckTypedWindowEvent(_display, e.xany.window,
  72                                    DestroyNotify, &ev) ||
  73             XCheckTypedWindowEvent(_display, e.xany.window,
  74                                    UnmapNotify, &ev)) {
  75           processEvent(ev);
  76         }
  77
  78         updateClientList();
  79       }
  80     } else {
  81       // a client window
  82       if (e.xproperty.atom == _xatom->getAtom(XAtom::net_wm_state))
  83         window->updateState();
  84       else if (e.xproperty.atom == _xatom->getAtom(XAtom::net_wm_desktop))
  85         window->updateDesktop();
  86       else if (e.xproperty.atom == _xatom->getAtom(XAtom::net_wm_name) ||
  87                e.xproperty.atom == _xatom->getAtom(XAtom::wm_name))
  88         window->updateTitle();
  89       else if (e.xproperty.atom == _xatom->getAtom(XAtom::wm_class))
  90         window->updateClass();
  91     }
  92     break;
  93   case DestroyNotify:
  94   case UnmapNotify:
  95     window->setUnmapped(true);
  96     break;
  97   }
  98 }
  99
 100
 101 // do we want to add this window to our list?
 102 bool doAddWindow(Window window) {
 103   Atom type;
 104   if (! _xatom->getValue(window, XAtom::net_wm_window_type, XAtom::atom,
 105                          type))
 106     return True;
 107
 108   if (type == _xatom->getAtom(XAtom::net_wm_window_type_dock) ||
 109       type == _xatom->getAtom(XAtom::net_wm_window_type_menu))
 110     return False;
 111
 112   return True;
 113 }
 114
 115
 116 void updateClientList() {
 117   WindowList::iterator insert_point = _active;
 118   if (insert_point != _clients.end())
 119     ++insert_point; // get to the item client the focused client
 120
 121   // get the client list from the root window
 122   Window *rootclients = 0;
 123   unsigned long num = (unsigned) -1;
 124   if (! _xatom->getValue(_root, XAtom::net_client_list, XAtom::window, num,
 125                          &rootclients)) {
 126     while (! _clients.empty()) {
 127       delete _clients.front();
 128       _clients.erase(_clients.begin());
 129     }
 130     if (rootclients) delete [] rootclients;
 131     return;
 132   }
 133
 134   WindowList::iterator it, end = _clients.end();
 135   unsigned long i;
 136
 137   // insert new clients after the active window
 138   for (i = 0; i < num; ++i) {
 139     for (it = _clients.begin(); it != end; ++it)
 140       if (**it == rootclients[i])
 141         break;
 142     if (it == end) {  // didn't already exist
 143       if (doAddWindow(rootclients[i])) {
 144         cout << "Added window: 0x" << hex << rootclients[i] << dec << endl;
 145         _clients.insert(insert_point, new XWindow(rootclients[i]));
 146       }
 147     }
 148   }
 149
 150   // remove clients that no longer exist
 151   for (it = _clients.begin(); it != end;) {
 152     WindowList::iterator it2 = it++;
 153     for (i = 0; i < num; ++i)
 154       if (**it2 == rootclients[i])
 155         break;
 156     if (i == num)  { // no longer exists
 157       cout << "Removed window: 0x" << hex << (*it2)->window() << dec << endl;
 158       delete *it2;
 159       _clients.erase(it2);
 160     }
 161   }
 162
 163   if (rootclients) delete [] rootclients;
 164 }
 165
 166
 167 void updateActiveWindow() {
 168   Window a = None;
 169   _xatom->getValue(_root, XAtom::net_active_window, XAtom::window, a);
 170
 171   WindowList::iterator it, end = _clients.end();
 172   for (it = _clients.begin(); it != end; ++it) {
 173     if (**it == a)
 174       break;
 175   }
 176   _active = it;
 177
 178   cout << "Active window is now: ";
 179   if (_active == _clients.end()) cout << "None\n";
 180   else cout << "0x" << hex << (*_active)->window() << dec << endl;
 181 }