1 // -*- mode: C++; indent-tabs-mode: nil; -*-
2 // screen.cc for Epistophy - a key handler for NETWM/EWMH window managers.
3 // Copyright (c) 2002 - 2002 Ben Jansens <ben at orodu.net>
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:
12 // The above copyright notice and this permission notice shall be included in
13 // all copies or substantial portions of the Software.
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.
24 # include "../../config.h"
25 #endif // HAVE_CONFIG_H
30 #endif // HAVE_STDIO_H
33 # include <sys/types.h>
35 #endif // HAVE_UNISTD_H
47 #include "../../src/BaseDisplay.hh"
48 #include "../../src/XAtom.hh"
53 screen::screen(epist *epist, int number)
54 : _clients(epist->clientsList()),
55 _active(epist->activeWindow()) {
57 _xatom = _epist->xatom();
58 _last_active = _clients.end();
60 _info = _epist->getScreenInfo(_number);
61 _root = _info->getRootWindow();
63 // find a window manager supporting NETWM, waiting for it to load if we must
64 int count = 20; // try for 20 seconds
66 while (! (_epist->doShutdown() || _managed || count <= 0)) {
67 if (! (_managed = findSupportingWM()))
72 cout << "Found compatible window manager '" << _wm_name << "' for screen "
75 cout << "Unable to find a compatible window manager for screen " <<
80 XSelectInput(_epist->getXDisplay(), _root, PropertyChangeMask);
85 XSelectInput(_epist->getXDisplay(), _root, None);
89 bool screen::findSupportingWM() {
91 if (! _xatom->getValue(_root, XAtom::net_supporting_wm_check, XAtom::window,
92 support_win) || support_win == None)
96 _xatom->getValue(support_win, XAtom::net_wm_name, XAtom::utf8, title);
102 XWindow *screen::findWindow(const XEvent &e) const {
105 WindowList::const_iterator it, end = _clients.end();
106 for (it = _clients.begin(); it != end; ++it)
107 if (**it == e.xany.window)
115 void screen::processEvent(const XEvent &e) {
117 assert(e.xany.window == _root);
122 if (e.xproperty.atom == _xatom->getAtom(XAtom::net_number_of_desktops))
124 if (e.xproperty.atom == _xatom->getAtom(XAtom::net_current_desktop))
125 updateActiveDesktop();
126 if (e.xproperty.atom == _xatom->getAtom(XAtom::net_active_window))
127 updateActiveWindow();
128 if (e.xproperty.atom == _xatom->getAtom(XAtom::net_client_list)) {
129 // catch any window unmaps first
131 if (XCheckTypedWindowEvent(_epist->getXDisplay(), e.xany.window,
132 DestroyNotify, &ev) ||
133 XCheckTypedWindowEvent(_epist->getXDisplay(), e.xany.window,
147 void screen::handleKeypress(const XEvent &e) {
148 int scrolllockMask, numlockMask;
149 _epist->getLockModifiers(numlockMask, scrolllockMask);
151 // Mask out the lock modifiers. We want our keys to always work
152 // This should be made an option
153 unsigned int state = e.xkey.state & ~(LockMask|scrolllockMask|numlockMask);
154 const Action *it = _epist->getKeyTree().getAction(e, state, this);
159 switch (it->type()) {
160 case Action::nextScreen:
161 _epist->cycleScreen(_number, true);
164 case Action::prevScreen:
165 _epist->cycleScreen(_number, false);
168 case Action::nextWorkspace:
169 cycleWorkspace(true);
172 case Action::prevWorkspace:
173 cycleWorkspace(false);
176 case Action::nextWindow:
180 case Action::prevWindow:
184 case Action::nextWindowOnAllWorkspaces:
185 cycleWindow(true, false, true);
188 case Action::prevWindowOnAllWorkspaces:
189 cycleWindow(false, false, true);
192 case Action::nextWindowOnAllScreens:
193 cycleWindow(true, true);
196 case Action::prevWindowOnAllScreens:
197 cycleWindow(false, true);
200 case Action::nextWindowOfClass:
201 cycleWindow(true, false, false, true, it->string());
204 case Action::prevWindowOfClass:
205 cycleWindow(false, false, false, true, it->string());
208 case Action::nextWindowOfClassOnAllWorkspaces:
209 cycleWindow(true, false, true, true, it->string());
212 case Action::prevWindowOfClassOnAllWorkspaces:
213 cycleWindow(false, false, true, true, it->string());
216 case Action::changeWorkspace:
217 changeWorkspace(it->number());
220 case Action::execute:
221 execCommand(it->string());
228 // these actions require an active window
229 if (_active != _clients.end()) {
230 XWindow *window = *_active;
232 switch (it->type()) {
233 case Action::iconify:
249 case Action::sendToWorkspace:
250 window->sendTo(it->number());
253 case Action::toggleomnipresent:
254 if (window->desktop() == 0xffffffff)
255 window->sendTo(_active_desktop);
257 window->sendTo(0xffffffff);
260 case Action::moveWindowUp:
261 window->move(window->x(), window->y() - it->number());
264 case Action::moveWindowDown:
265 window->move(window->x(), window->y() + it->number());
268 case Action::moveWindowLeft:
269 window->move(window->x() - it->number(), window->y());
272 case Action::moveWindowRight:
273 window->move(window->x() + it->number(), window->y());
276 case Action::resizeWindowWidth:
277 window->resizeRel(it->number(), 0);
280 case Action::resizeWindowHeight:
281 window->resizeRel(0, it->number());
284 case Action::toggleshade:
285 window->shade(! window->shaded());
288 case Action::toggleMaximizeHorizontal:
289 window->toggleMaximize(XWindow::Max_Horz);
292 case Action::toggleMaximizeVertical:
293 window->toggleMaximize(XWindow::Max_Vert);
296 case Action::toggleMaximizeFull:
297 window->toggleMaximize(XWindow::Max_Full);
301 assert(false); // unhandled action type!
307 // do we want to add this window to our list?
308 bool screen::doAddWindow(Window window) const {
312 if (! _xatom->getValue(window, XAtom::net_wm_window_type, XAtom::atom,
316 if (type == _xatom->getAtom(XAtom::net_wm_window_type_dock) ||
317 type == _xatom->getAtom(XAtom::net_wm_window_type_menu))
324 void screen::updateEverything() {
326 updateActiveDesktop();
328 updateActiveWindow();
332 void screen::updateNumDesktops() {
335 if (! _xatom->getValue(_root, XAtom::net_number_of_desktops, XAtom::cardinal,
336 (unsigned long)_num_desktops))
337 _num_desktops = 1; // assume that there is at least 1 desktop!
341 void screen::updateActiveDesktop() {
344 if (! _xatom->getValue(_root, XAtom::net_current_desktop, XAtom::cardinal,
345 (unsigned long)_active_desktop))
346 _active_desktop = 0; // there must be at least one desktop, and it must
347 // be the current one
351 void screen::updateClientList() {
354 WindowList::iterator insert_point = _active;
355 if (insert_point != _clients.end())
356 ++insert_point; // get to the item client the focused client
358 // get the client list from the root window
359 Window *rootclients = 0;
360 unsigned long num = (unsigned) -1;
361 if (! _xatom->getValue(_root, XAtom::net_client_list, XAtom::window, num,
365 WindowList::iterator it;
366 const WindowList::iterator end = _clients.end();
369 // insert new clients after the active window
370 for (i = 0; i < num; ++i) {
371 for (it = _clients.begin(); it != end; ++it)
372 if (**it == rootclients[i])
374 if (it == end) { // didn't already exist
375 if (doAddWindow(rootclients[i])) {
376 // cout << "Added window: 0x" << hex << rootclients[i] << dec << endl;
377 _clients.insert(insert_point, new XWindow(_epist, this,
383 // remove clients that no longer exist (that belong to this screen)
384 for (it = _clients.begin(); it != end;) {
385 WindowList::iterator it2 = it;
388 // is on another screen?
389 if ((*it2)->getScreen() != this)
392 for (i = 0; i < num; ++i)
393 if (**it2 == rootclients[i])
395 if (i == num) { // no longer exists
396 // cout << "Removed window: 0x" << hex << (*it2)->window() << dec << endl;
397 // watch for the active and last-active window
399 _active = _clients.end();
400 if (it2 == _last_active)
401 _last_active = _clients.end();
407 if (rootclients) delete [] rootclients;
411 const XWindow *screen::lastActiveWindow() const {
412 if (_last_active != _clients.end())
413 return *_last_active;
415 // find a window if one exists
416 WindowList::const_iterator it, end = _clients.end();
417 for (it = _clients.begin(); it != end; ++it)
418 if ((*it)->getScreen() == this && ! (*it)->iconic() &&
419 ((*it)->desktop() == 0xffffffff || (*it)->desktop() == _active_desktop))
422 // no windows on this screen
427 void screen::updateActiveWindow() {
431 _xatom->getValue(_root, XAtom::net_active_window, XAtom::window, a);
433 WindowList::iterator it, end = _clients.end();
434 for (it = _clients.begin(); it != end; ++it) {
436 if ((*it)->getScreen() != this)
445 /* cout << "Active window is now: ";
446 if (_active == _clients.end()) cout << "None\n";
447 else cout << "0x" << hex << (*_active)->window() << dec << endl;
452 void screen::execCommand(const string &cmd) const {
454 if ((pid = fork()) == 0) {
455 // make the command run on the correct screen
456 if (putenv(const_cast<char*>(_info->displayString().c_str()))) {
457 cout << "warning: couldn't set environment variable 'DISPLAY'\n";
460 execl("/bin/sh", "sh", "-c", cmd.c_str(), NULL);
462 } else if (pid == -1) {
463 cout << _epist->getApplicationName() <<
464 ": Could not fork a process for executing a command\n";
469 void screen::cycleWindow(const bool forward, const bool allscreens,
470 const bool alldesktops, const bool sameclass,
471 const string &cn) const {
474 if (_clients.empty()) return;
476 string classname(cn);
477 if (sameclass && classname.empty() && _active != _clients.end())
478 classname = (*_active)->appClass();
480 WindowList::const_iterator target = _active,
481 begin = _clients.begin(),
482 end = _clients.end();
497 // must be no window to focus
498 if (target == _active)
501 // start back at the beginning of the loop
505 // determine if this window is invalid for cycling to
506 const XWindow *t = *target;
507 if (t->iconic()) continue;
508 if (! allscreens && t->getScreen() != this) continue;
509 if (! alldesktops && ! (t->desktop() == _active_desktop ||
510 t->desktop() == 0xffffffff)) continue;
511 if (sameclass && ! classname.empty() &&
512 t->appClass() != classname) continue;
513 if (! t->canFocus()) continue;
515 // found a good window!
522 void screen::cycleWorkspace(const bool forward, const bool loop) const {
525 unsigned int destination = _active_desktop;
528 if (destination < _num_desktops - 1)
536 destination = _num_desktops - 1;
539 if (destination != _active_desktop)
540 changeWorkspace(destination);
544 void screen::changeWorkspace(const int num) const {
547 _xatom->sendClientMessage(_root, XAtom::net_current_desktop, _root, num);
550 void screen::grabKey(const KeyCode keyCode, const int modifierMask) const {
552 Display *display = _epist->getXDisplay();
553 int numlockMask, scrolllockMask;
555 _epist->getLockModifiers(numlockMask, scrolllockMask);
557 XGrabKey(display, keyCode, modifierMask,
558 _root, True, GrabModeAsync, GrabModeAsync);
559 XGrabKey(display, keyCode,
560 modifierMask|LockMask,
561 _root, True, GrabModeAsync, GrabModeAsync);
562 XGrabKey(display, keyCode,
563 modifierMask|scrolllockMask,
564 _root, True, GrabModeAsync, GrabModeAsync);
565 XGrabKey(display, keyCode,
566 modifierMask|numlockMask,
567 _root, True, GrabModeAsync, GrabModeAsync);
569 XGrabKey(display, keyCode,
570 modifierMask|LockMask|scrolllockMask,
571 _root, True, GrabModeAsync, GrabModeAsync);
572 XGrabKey(display, keyCode,
573 modifierMask|scrolllockMask|numlockMask,
574 _root, True, GrabModeAsync, GrabModeAsync);
575 XGrabKey(display, keyCode,
576 modifierMask|numlockMask|LockMask,
577 _root, True, GrabModeAsync, GrabModeAsync);
579 XGrabKey(display, keyCode,
580 modifierMask|numlockMask|LockMask|scrolllockMask,
581 _root, True, GrabModeAsync, GrabModeAsync);
584 void screen::ungrabKey(const KeyCode keyCode, const int modifierMask) const {
586 Display *display = _epist->getXDisplay();
587 int numlockMask, scrolllockMask;
589 _epist->getLockModifiers(numlockMask, scrolllockMask);
591 XUngrabKey(display, keyCode, modifierMask, _root);
592 XUngrabKey(display, keyCode, modifierMask|LockMask, _root);
593 XUngrabKey(display, keyCode, modifierMask|scrolllockMask, _root);
594 XUngrabKey(display, keyCode, modifierMask|numlockMask, _root);
595 XUngrabKey(display, keyCode, modifierMask|LockMask|scrolllockMask, _root);
596 XUngrabKey(display, keyCode, modifierMask|scrolllockMask|numlockMask, _root);
597 XUngrabKey(display, keyCode, modifierMask|numlockMask|LockMask, _root);
598 XUngrabKey(display, keyCode, modifierMask|numlockMask|LockMask|
599 scrolllockMask, _root);