1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
2 // screen.cc for Epistrophy - 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.
23 /* A few comments about stacked cycling:
24 * When stacked cycling is turned on, the focused window is always at the top
25 * (front) of the list (_clients), EXCEPT for when we are in cycling mode.
26 * (_cycling is true) If we were to add the focused window to the top of the
27 * stack while we were cycling, we would end in a deadlock between 2 windows.
28 * When the modifiers are released, the window that has focus (but it's not
29 * at the top of the stack, since we are cycling) is placed at the top of the
31 * Hooray and Bummy. - Marius
35 # include "../../config.h"
36 #endif // HAVE_CONFIG_H
41 #endif // HAVE_STDIO_H
44 # include <sys/types.h>
46 #endif // HAVE_UNISTD_H
48 #include <X11/keysym.h>
60 #include "../../src/BaseDisplay.hh"
61 #include "../../src/XAtom.hh"
66 screen::screen(epist *epist, int number)
67 : _clients(epist->clientsList()), _active(epist->activeWindow()),
68 _config(epist->getConfig()), _grabbed(true), _cycling(false),
69 _stacked_cycling(false)
72 _xatom = _epist->xatom();
73 _last_active = _clients.end();
75 _info = _epist->getScreenInfo(_number);
76 _root = _info->getRootWindow();
78 _config->getValue(Config::stackedCycling, _stacked_cycling);
80 // find a window manager supporting NETWM, waiting for it to load if we must
81 int count = 20; // try for 20 seconds
83 while (! (_epist->doShutdown() || _managed || count <= 0)) {
84 if (! (_managed = findSupportingWM()))
89 cout << "Found compatible window manager '" << _wm_name << "' for screen "
92 cout << "Unable to find a compatible window manager for screen " <<
97 XSelectInput(_epist->getXDisplay(), _root, PropertyChangeMask);
102 XSelectInput(_epist->getXDisplay(), _root, None);
106 bool screen::findSupportingWM() {
108 if (! _xatom->getValue(_root, XAtom::net_supporting_wm_check, XAtom::window,
109 support_win) || support_win == None)
113 _xatom->getValue(support_win, XAtom::net_wm_name, XAtom::utf8, title);
119 XWindow *screen::findWindow(const XEvent &e) const {
122 WindowList::const_iterator it, end = _clients.end();
123 for (it = _clients.begin(); it != end; ++it)
124 if (**it == e.xany.window)
132 void screen::processEvent(const XEvent &e) {
134 assert(e.xany.window == _root);
139 if (e.xproperty.atom == _xatom->getAtom(XAtom::net_number_of_desktops))
141 else if (e.xproperty.atom == _xatom->getAtom(XAtom::net_current_desktop))
142 updateActiveDesktop();
143 else if (e.xproperty.atom == _xatom->getAtom(XAtom::net_active_window))
144 updateActiveWindow();
145 else if (e.xproperty.atom == _xatom->getAtom(XAtom::net_client_list)) {
146 // catch any window unmaps first
148 if (XCheckTypedWindowEvent(_epist->getXDisplay(), e.xany.window,
149 DestroyNotify, &ev) ||
150 XCheckTypedWindowEvent(_epist->getXDisplay(), e.xany.window,
171 void screen::handleKeypress(const XEvent &e) {
172 int scrolllockMask, numlockMask;
173 _epist->getLockModifiers(numlockMask, scrolllockMask);
175 // Mask out the lock modifiers. We want our keys to always work
176 // This should be made an option
177 unsigned int state = e.xkey.state & ~(LockMask|scrolllockMask|numlockMask);
178 keytree &ktree = _epist->getKeyTree();
179 const Action *it = ktree.getAction(e, state, this);
184 switch (it->type()) {
185 case Action::nextScreen:
186 _epist->cycleScreen(_number, true);
189 case Action::prevScreen:
190 _epist->cycleScreen(_number, false);
193 case Action::nextWorkspace:
194 cycleWorkspace(true, it->number() != 0 ? it->number(): 1);
197 case Action::prevWorkspace:
198 cycleWorkspace(false, it->number() != 0 ? it->number(): 1);
201 case Action::nextWindow:
203 cycleWindow(state, true, it->number() != 0 ? it->number(): 1);
206 case Action::prevWindow:
207 cycleWindow(state, false, it->number() != 0 ? it->number(): 1);
210 case Action::nextWindowOnAllWorkspaces:
211 cycleWindow(state, true, it->number() != 0 ? it->number(): 1, false, true);
214 case Action::prevWindowOnAllWorkspaces:
215 cycleWindow(state, false, it->number() != 0 ? it->number(): 1, false, true);
218 case Action::nextWindowOnAllScreens:
219 cycleWindow(state, true, it->number() != 0 ? it->number(): 1, true);
222 case Action::prevWindowOnAllScreens:
223 cycleWindow(state, false, it->number() != 0 ? it->number(): 1, true);
226 case Action::nextWindowOfClass:
227 cycleWindow(state, true, it->number() != 0 ? it->number(): 1,
228 false, false, true, it->string());
231 case Action::prevWindowOfClass:
232 cycleWindow(state, false, it->number() != 0 ? it->number(): 1,
233 false, false, true, it->string());
236 case Action::nextWindowOfClassOnAllWorkspaces:
237 cycleWindow(state, true, it->number() != 0 ? it->number(): 1,
238 false, true, true, it->string());
241 case Action::prevWindowOfClassOnAllWorkspaces:
242 cycleWindow(state, false, it->number() != 0 ? it->number(): 1,
243 false, true, true, it->string());
246 case Action::changeWorkspace:
247 changeWorkspace(it->number());
250 case Action::upWorkspace:
251 changeWorkspaceVert(-1);
254 case Action::downWorkspace:
255 changeWorkspaceVert(1);
258 case Action::leftWorkspace:
259 changeWorkspaceHorz(-1);
262 case Action::rightWorkspace:
263 changeWorkspaceHorz(1);
266 case Action::execute:
267 execCommand(it->string());
270 case Action::showRootMenu:
271 _xatom->sendClientMessage(rootWindow(), XAtom::openbox_show_root_menu,
275 case Action::showWorkspaceMenu:
276 _xatom->sendClientMessage(rootWindow(), XAtom::openbox_show_workspace_menu,
280 case Action::toggleGrabs: {
282 ktree.ungrabDefaults(this);
285 ktree.grabDefaults(this);
295 // these actions require an active window
296 if (_active != _clients.end()) {
297 XWindow *window = *_active;
299 switch (it->type()) {
300 case Action::iconify:
316 case Action::sendToWorkspace:
317 window->sendTo(it->number());
320 case Action::toggleOmnipresent:
321 if (window->desktop() == 0xffffffff)
322 window->sendTo(_active_desktop);
324 window->sendTo(0xffffffff);
327 case Action::moveWindowUp:
328 window->move(window->x(), window->y() -
329 (it->number() != 0 ? it->number(): 1));
332 case Action::moveWindowDown:
333 window->move(window->x(), window->y() +
334 (it->number() != 0 ? it->number(): 1));
337 case Action::moveWindowLeft:
338 window->move(window->x() - (it->number() != 0 ? it->number(): 1),
342 case Action::moveWindowRight:
343 window->move(window->x() + (it->number() != 0 ? it->number(): 1),
347 case Action::resizeWindowWidth:
348 window->resizeRel(it->number(), 0);
351 case Action::resizeWindowHeight:
352 window->resizeRel(0, it->number());
355 case Action::toggleShade:
356 window->shade(! window->shaded());
359 case Action::toggleMaximizeHorizontal:
360 window->toggleMaximize(XWindow::Max_Horz);
363 case Action::toggleMaximizeVertical:
364 window->toggleMaximize(XWindow::Max_Vert);
367 case Action::toggleMaximizeFull:
368 window->toggleMaximize(XWindow::Max_Full);
371 case Action::toggleDecorations:
372 window->decorate(! window->decorated());
376 assert(false); // unhandled action type!
383 void screen::handleKeyrelease(const XEvent &) {
384 // the only keyrelease event we care about (for now) is when we do stacked
385 // cycling and the modifier is released
386 if (_stacked_cycling && _cycling && nothingIsPressed()) {
387 // all modifiers have been released. ungrab the keyboard, move the
388 // focused window to the top of the Z-order and raise it
391 if (_active != _clients.end()) {
392 XWindow *w = *_active;
393 bool e = _last_active == _active;
395 _clients.push_front(w);
396 _active = _clients.begin();
397 if (e) _last_active = _active;
406 // do we want to add this window to our list?
407 bool screen::doAddWindow(Window window) const {
411 if (! _xatom->getValue(window, XAtom::net_wm_window_type, XAtom::atom,
415 if (type == _xatom->getAtom(XAtom::net_wm_window_type_dock) ||
416 type == _xatom->getAtom(XAtom::net_wm_window_type_menu))
423 void screen::updateEverything() {
425 updateActiveDesktop();
427 updateActiveWindow();
431 void screen::updateNumDesktops() {
434 if (! _xatom->getValue(_root, XAtom::net_number_of_desktops, XAtom::cardinal,
435 (unsigned long)_num_desktops))
436 _num_desktops = 1; // assume that there is at least 1 desktop!
440 void screen::updateActiveDesktop() {
443 if (! _xatom->getValue(_root, XAtom::net_current_desktop, XAtom::cardinal,
444 (unsigned long)_active_desktop))
445 _active_desktop = 0; // there must be at least one desktop, and it must
446 // be the current one
450 void screen::updateClientList() {
453 WindowList::iterator insert_point = _active;
454 if (insert_point != _clients.end())
455 ++insert_point; // get to the item client the focused client
457 // get the client list from the root window
458 Window *rootclients = 0;
459 unsigned long num = (unsigned) -1;
460 if (! _xatom->getValue(_root, XAtom::net_client_list, XAtom::window, num,
464 WindowList::iterator it;
465 const WindowList::iterator end = _clients.end();
468 for (i = 0; i < num; ++i) {
469 for (it = _clients.begin(); it != end; ++it)
470 if (**it == rootclients[i])
472 if (it == end) { // didn't already exist
473 if (doAddWindow(rootclients[i])) {
474 // cout << "Added window: 0x" << hex << rootclients[i] << dec << endl;
475 if (_stacked_cycling) {
476 // insert new clients after the active window
477 _clients.insert(insert_point, new XWindow(_epist, this,
480 // insert new clients at the front of the list
481 _clients.push_front(new XWindow(_epist, this, rootclients[i]));
487 // remove clients that no longer exist (that belong to this screen)
488 for (it = _clients.begin(); it != end;) {
489 WindowList::iterator it2 = it;
492 // is on another screen?
493 if ((*it2)->getScreen() != this)
496 for (i = 0; i < num; ++i)
497 if (**it2 == rootclients[i])
499 if (i == num) { // no longer exists
500 // cout << "Removed window: 0x" << hex << (*it2)->window() << dec << endl;
501 // watch for the active and last-active window
503 _active = _clients.end();
504 if (it2 == _last_active)
505 _last_active = _clients.end();
511 if (rootclients) delete [] rootclients;
515 const XWindow *screen::lastActiveWindow() const {
516 if (_last_active != _clients.end())
517 return *_last_active;
519 // find a window if one exists
520 WindowList::const_iterator it, end = _clients.end();
521 for (it = _clients.begin(); it != end; ++it)
522 if ((*it)->getScreen() == this && ! (*it)->iconic() &&
523 ((*it)->desktop() == 0xffffffff || (*it)->desktop() == _active_desktop))
526 // no windows on this screen
531 void screen::updateActiveWindow() {
535 _xatom->getValue(_root, XAtom::net_active_window, XAtom::window, a);
537 WindowList::iterator it, end = _clients.end();
538 for (it = _clients.begin(); it != end; ++it) {
540 if ((*it)->getScreen() != this)
548 if (_active != end) {
549 /* if we're not cycling and a window gets focus, add it to the top of the
552 if (_stacked_cycling && !_cycling) {
553 XWindow *win = *_active;
554 _clients.remove(win);
555 _clients.push_front(win);
556 _active = _clients.begin();
558 _last_active = _active;
562 /* cout << "Active window is now: ";
563 if (_active == _clients.end()) cout << "None\n";
564 else cout << "0x" << hex << (*_active)->window() << dec << endl;
569 void screen::execCommand(const string &cmd) const {
571 if ((pid = fork()) == 0) {
572 // make the command run on the correct screen
573 if (putenv(const_cast<char*>(_info->displayString().c_str()))) {
574 cout << "warning: couldn't set environment variable 'DISPLAY'\n";
577 execl("/bin/sh", "sh", "-c", cmd.c_str(), NULL);
579 } else if (pid == -1) {
580 cout << _epist->getApplicationName() <<
581 ": Could not fork a process for executing a command\n";
586 void screen::cycleWindow(unsigned int state, const bool forward,
587 const int increment, const bool allscreens,
588 const bool alldesktops, const bool sameclass,
592 assert(increment > 0);
594 if (_clients.empty()) return;
596 string classname(cn);
597 if (sameclass && classname.empty() && _active != _clients.end())
598 classname = (*_active)->appClass();
600 WindowList::const_iterator target = _active,
601 begin = _clients.begin(),
602 end = _clients.end();
606 for (int x = 0; x < increment; ++x) {
620 // must be no window to focus
621 if (target == _active)
624 // start back at the beginning of the loop
628 // determine if this window is invalid for cycling to
630 if (t->iconic()) continue;
631 if (! allscreens && t->getScreen() != this) continue;
632 if (! alldesktops && ! (t->desktop() == _active_desktop ||
633 t->desktop() == 0xffffffff)) continue;
634 if (sameclass && ! classname.empty() &&
635 t->appClass() != classname) continue;
636 if (! t->canFocus()) continue;
638 // found a good window so break out of the while, and perhaps continue
644 // phew. we found the window, so focus it.
645 if (_stacked_cycling && state) {
647 // grab modifiers so we can intercept KeyReleases from them
652 // if the window is on another desktop, we can't use XSetInputFocus, since
653 // it doesn't imply a workspace change.
654 if (t->desktop() == _active_desktop || t->desktop() == 0xffffffff)
655 t->focus(false); // focus, but don't raise
657 t->focus(); // change workspace and focus
665 void screen::cycleWorkspace(const bool forward, const int increment,
666 const bool loop) const {
668 assert(increment > 0);
670 unsigned int destination = _active_desktop;
672 for (int x = 0; x < increment; ++x) {
674 if (destination < _num_desktops - 1)
682 destination = _num_desktops - 1;
686 if (destination != _active_desktop)
687 changeWorkspace(destination);
691 void screen::changeWorkspace(const int num) const {
694 _xatom->sendClientMessage(_root, XAtom::net_current_desktop, _root, num);
697 void screen::changeWorkspaceVert(const int num) const {
700 int num_desktops = (signed)_num_desktops;
701 int active_desktop = (signed)_active_desktop;
704 _config->getValue(Config::workspaceColumns, width);
706 if (width > num_desktops || width <= 0)
709 // a cookie to the person that makes this pretty
711 wnum = active_desktop - width;
713 wnum = num_desktops/width * width + active_desktop;
714 if (wnum >= num_desktops)
715 wnum = num_desktops - 1;
719 wnum = active_desktop + width;
720 if (wnum >= num_desktops) {
721 wnum = (active_desktop + width) % num_desktops - 1;
726 changeWorkspace(wnum);
729 void screen::changeWorkspaceHorz(const int num) const {
732 int num_desktops = (signed)_num_desktops;
733 int active_desktop = (signed)_active_desktop;
736 _config->getValue(Config::workspaceColumns, width);
738 if (width > num_desktops || width <= 0)
742 if (active_desktop % width != 0)
743 changeWorkspace(active_desktop - 1);
745 wnum = active_desktop + width - 1;
746 if (wnum >= num_desktops)
747 wnum = num_desktops - 1;
751 if (active_desktop % width != width - 1) {
752 wnum = active_desktop + 1;
753 if (wnum >= num_desktops)
754 wnum = num_desktops / width * width;
757 wnum = active_desktop - width + 1;
759 changeWorkspace(wnum);
762 void screen::grabKey(const KeyCode keyCode, const int modifierMask) const {
764 Display *display = _epist->getXDisplay();
765 int numlockMask, scrolllockMask;
767 _epist->getLockModifiers(numlockMask, scrolllockMask);
769 XGrabKey(display, keyCode, modifierMask,
770 _root, True, GrabModeAsync, GrabModeAsync);
771 XGrabKey(display, keyCode,
772 modifierMask|LockMask,
773 _root, True, GrabModeAsync, GrabModeAsync);
774 XGrabKey(display, keyCode,
775 modifierMask|scrolllockMask,
776 _root, True, GrabModeAsync, GrabModeAsync);
777 XGrabKey(display, keyCode,
778 modifierMask|numlockMask,
779 _root, True, GrabModeAsync, GrabModeAsync);
781 XGrabKey(display, keyCode,
782 modifierMask|LockMask|scrolllockMask,
783 _root, True, GrabModeAsync, GrabModeAsync);
784 XGrabKey(display, keyCode,
785 modifierMask|scrolllockMask|numlockMask,
786 _root, True, GrabModeAsync, GrabModeAsync);
787 XGrabKey(display, keyCode,
788 modifierMask|numlockMask|LockMask,
789 _root, True, GrabModeAsync, GrabModeAsync);
791 XGrabKey(display, keyCode,
792 modifierMask|numlockMask|LockMask|scrolllockMask,
793 _root, True, GrabModeAsync, GrabModeAsync);
796 void screen::ungrabKey(const KeyCode keyCode, const int modifierMask) const {
798 Display *display = _epist->getXDisplay();
799 int numlockMask, scrolllockMask;
801 _epist->getLockModifiers(numlockMask, scrolllockMask);
803 XUngrabKey(display, keyCode, modifierMask, _root);
804 XUngrabKey(display, keyCode, modifierMask|LockMask, _root);
805 XUngrabKey(display, keyCode, modifierMask|scrolllockMask, _root);
806 XUngrabKey(display, keyCode, modifierMask|numlockMask, _root);
807 XUngrabKey(display, keyCode, modifierMask|LockMask|scrolllockMask, _root);
808 XUngrabKey(display, keyCode, modifierMask|scrolllockMask|numlockMask, _root);
809 XUngrabKey(display, keyCode, modifierMask|numlockMask|LockMask, _root);
810 XUngrabKey(display, keyCode, modifierMask|numlockMask|LockMask|
811 scrolllockMask, _root);
815 void screen::grabModifiers() const {
816 Display *display = _epist->getXDisplay();
818 XGrabKeyboard(display, rootWindow(), True, GrabModeAsync,
819 GrabModeAsync, CurrentTime);
823 void screen::ungrabModifiers() const {
824 Display *display = _epist->getXDisplay();
826 XUngrabKeyboard(display, CurrentTime);
830 bool screen::nothingIsPressed(void) const
833 XQueryKeymap(_epist->getXDisplay(), keys);
835 for (int i = 0; i < 32; ++i) {