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

   1 // -*- mode: C++; indent-tabs-mode: nil; -*-
   2 // epist.cc for Epistrophy - 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 #ifdef    HAVE_CONFIG_H
  24 #  include "../../config.h"
  25 #endif // HAVE_CONFIG_H
  26
  27 extern "C" {
  28 #ifdef    HAVE_UNISTD_H
  29 #  include <sys/types.h>
  30 #  include <unistd.h>
  31 #endif // HAVE_UNISTD_H
  32
  33 #ifdef    HAVE_STDLIB_H
  34 #  include <stdlib.h>
  35 #endif // HAVE_STDLIB_H
  36
  37 #ifdef    HAVE_SIGNAL_H
  38 #  include <signal.h>
  39 #endif // HAVE_SIGNAL_H
  40
  41 #ifdef    HAVE_LIBGEN_H
  42 #  include <libgen.h>
  43 #endif // HAVE_LIBGEN_H
  44 }
  45
  46 #include <iostream>
  47 #include <string>
  48
  49 using std::cout;
  50 using std::endl;
  51 using std::string;
  52
  53 #include "actions.hh"
  54 #include "epist.hh"
  55 #include "screen.hh"
  56 #include "window.hh"
  57 #include "parser.hh"
  58 #include "../../src/XAtom.hh"
  59
  60
  61 epist::epist(char **argv, char *dpy_name, char *rc_file)
  62   : BaseDisplay(argv[0], dpy_name) {
  63
  64   _argv = argv;
  65
  66   if (rc_file)
  67     _rc_file = rc_file;
  68   else
  69     _rc_file = expandTilde("~/.epistrc");
  70
  71   _xatom = new XAtom(getXDisplay());
  72
  73   _active = _clients.end();
  74
  75   for (unsigned int i = 0; i < getNumberOfScreens(); ++i) {
  76     screen *s = new screen(this, i);
  77     if (s->managed()) {
  78       _screens.push_back(s);
  79       s->updateEverything();
  80     }
  81   }
  82   if (_screens.empty()) {
  83     cout << "No compatible window manager found on any screens. Aborting.\n";
  84     ::exit(1);
  85   }
  86
  87   _ktree = new keytree(getXDisplay());
  88
  89   // set up the key tree
  90   parser p(_ktree);
  91   p.parse(_rc_file);
  92
  93   activateGrabs();
  94 }
  95
  96
  97 epist::~epist() {
  98   delete _xatom;
  99 }
 100
 101 void epist::activateGrabs() {
 102
 103   ScreenList::const_iterator scrit, scrend = _screens.end();
 104
 105   for (scrit = _screens.begin(); scrit != scrend; ++scrit)
 106       _ktree->grabDefaults(*scrit);
 107 }
 108
 109
 110 bool epist::handleSignal(int sig) {
 111   switch (sig) {
 112   case SIGHUP:
 113     cout << "epist: Restarting on request.\n";
 114     execvp(_argv[0], _argv);
 115     string base(basename(_argv[0]));
 116     execvp(base.c_str(), _argv);
 117     return false;  // this should be unreachable
 118
 119   case SIGTERM:
 120   case SIGINT:
 121   case SIGPIPE:
 122     shutdown();
 123     return true;
 124   }
 125
 126   return false;
 127 }
 128
 129
 130 void epist::process_event(XEvent *e) {
 131   ScreenList::const_iterator it, end = _screens.end();
 132   for (it = _screens.begin(); it != end; ++it) {
 133     if ((*it)->rootWindow() == e->xany.window) {
 134       (*it)->processEvent(*e);
 135       return;
 136     }
 137   }
 138
 139   // wasnt a root window, try for client windows
 140   XWindow *w = findWindow(e->xany.window);
 141   if (w) w->processEvent(*e);
 142 }
 143
 144
 145 void epist::addWindow(XWindow *window) {
 146   _windows.insert(WindowLookupPair(window->window(), window));
 147 }
 148
 149
 150 void epist::removeWindow(XWindow *window) {
 151   _windows.erase(window->window());
 152 }
 153
 154
 155 XWindow *epist::findWindow(Window window) const {
 156   WindowLookup::const_iterator it = _windows.find(window);
 157   if (it != _windows.end())
 158     return it->second;
 159
 160   return 0;
 161 }
 162
 163
 164 void epist::cycleScreen(int current, bool forward) const {
 165   unsigned int i;
 166   for (i = 0; i < _screens.size(); ++i)
 167     if (_screens[i]->number() == current) {
 168       current = i;
 169       break;
 170     }
 171   assert(i < _screens.size());  // current is for an unmanaged screen
 172
 173   int dest = current + (forward ? 1 : -1);
 174
 175   if (dest < 0) dest = (signed)_screens.size() - 1;
 176   else if (dest >= (signed)_screens.size()) dest = 0;
 177
 178   const XWindow *target = _screens[dest]->lastActiveWindow();
 179   if (target) target->focus();
 180 }