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.
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, it
->number() != 0 ? it
->number(): 1);
172 case Action::prevWorkspace
:
173 cycleWorkspace(false, it
->number() != 0 ? it
->number(): 1);
176 case Action::nextWindow
:
178 cycleWindow(true, it
->number() != 0 ? it
->number(): 1);
181 case Action::prevWindow
:
182 cycleWindow(false, it
->number() != 0 ? it
->number(): 1);
185 case Action::nextWindowOnAllWorkspaces
:
186 cycleWindow(true, it
->number() != 0 ? it
->number(): 1, false, true);
189 case Action::prevWindowOnAllWorkspaces
:
190 cycleWindow(false, it
->number() != 0 ? it
->number(): 1, false, true);
193 case Action::nextWindowOnAllScreens
:
194 cycleWindow(true, it
->number() != 0 ? it
->number(): 1, true);
197 case Action::prevWindowOnAllScreens
:
198 cycleWindow(false, it
->number() != 0 ? it
->number(): 1, true);
201 case Action::nextWindowOfClass
:
202 cycleWindow(true, it
->number() != 0 ? it
->number(): 1,
203 false, false, true, it
->string());
206 case Action::prevWindowOfClass
:
207 cycleWindow(false, it
->number() != 0 ? it
->number(): 1,
208 false, false, true, it
->string());
211 case Action::nextWindowOfClassOnAllWorkspaces
:
212 cycleWindow(true, it
->number() != 0 ? it
->number(): 1,
213 false, true, true, it
->string());
216 case Action::prevWindowOfClassOnAllWorkspaces
:
217 cycleWindow(false, it
->number() != 0 ? it
->number(): 1,
218 false, true, true, it
->string());
221 case Action::changeWorkspace
:
222 changeWorkspace(it
->number());
225 case Action::upWorkspace
:
226 changeWorkspaceVert(-1);
229 case Action::downWorkspace
:
230 changeWorkspaceVert(1);
233 case Action::leftWorkspace
:
234 changeWorkspaceHorz(-1);
237 case Action::rightWorkspace
:
238 changeWorkspaceHorz(1);
241 case Action::execute
:
242 execCommand(it
->string());
249 // these actions require an active window
250 if (_active
!= _clients
.end()) {
251 XWindow
*window
= *_active
;
253 switch (it
->type()) {
254 case Action::iconify
:
270 case Action::sendToWorkspace
:
271 window
->sendTo(it
->number());
274 case Action::toggleomnipresent
:
275 if (window
->desktop() == 0xffffffff)
276 window
->sendTo(_active_desktop
);
278 window
->sendTo(0xffffffff);
281 case Action::moveWindowUp
:
282 window
->move(window
->x(), window
->y() - it
->number());
285 case Action::moveWindowDown
:
286 window
->move(window
->x(), window
->y() + it
->number());
289 case Action::moveWindowLeft
:
290 window
->move(window
->x() - it
->number(), window
->y());
293 case Action::moveWindowRight
:
294 window
->move(window
->x() + it
->number(), window
->y());
297 case Action::resizeWindowWidth
:
298 window
->resizeRel(it
->number(), 0);
301 case Action::resizeWindowHeight
:
302 window
->resizeRel(0, it
->number());
305 case Action::toggleshade
:
306 window
->shade(! window
->shaded());
309 case Action::toggleMaximizeHorizontal
:
310 window
->toggleMaximize(XWindow::Max_Horz
);
313 case Action::toggleMaximizeVertical
:
314 window
->toggleMaximize(XWindow::Max_Vert
);
317 case Action::toggleMaximizeFull
:
318 window
->toggleMaximize(XWindow::Max_Full
);
322 assert(false); // unhandled action type!
328 // do we want to add this window to our list?
329 bool screen::doAddWindow(Window window
) const {
333 if (! _xatom
->getValue(window
, XAtom::net_wm_window_type
, XAtom::atom
,
337 if (type
== _xatom
->getAtom(XAtom::net_wm_window_type_dock
) ||
338 type
== _xatom
->getAtom(XAtom::net_wm_window_type_menu
))
345 void screen::updateEverything() {
347 updateActiveDesktop();
349 updateActiveWindow();
353 void screen::updateNumDesktops() {
356 if (! _xatom
->getValue(_root
, XAtom::net_number_of_desktops
, XAtom::cardinal
,
357 (unsigned long)_num_desktops
))
358 _num_desktops
= 1; // assume that there is at least 1 desktop!
362 void screen::updateActiveDesktop() {
365 if (! _xatom
->getValue(_root
, XAtom::net_current_desktop
, XAtom::cardinal
,
366 (unsigned long)_active_desktop
))
367 _active_desktop
= 0; // there must be at least one desktop, and it must
368 // be the current one
372 void screen::updateClientList() {
375 WindowList::iterator insert_point
= _active
;
376 if (insert_point
!= _clients
.end())
377 ++insert_point
; // get to the item client the focused client
379 // get the client list from the root window
380 Window
*rootclients
= 0;
381 unsigned long num
= (unsigned) -1;
382 if (! _xatom
->getValue(_root
, XAtom::net_client_list
, XAtom::window
, num
,
386 WindowList::iterator it
;
387 const WindowList::iterator end
= _clients
.end();
390 // insert new clients after the active window
391 for (i
= 0; i
< num
; ++i
) {
392 for (it
= _clients
.begin(); it
!= end
; ++it
)
393 if (**it
== rootclients
[i
])
395 if (it
== end
) { // didn't already exist
396 if (doAddWindow(rootclients
[i
])) {
397 // cout << "Added window: 0x" << hex << rootclients[i] << dec << endl;
398 _clients
.insert(insert_point
, new XWindow(_epist
, this,
404 // remove clients that no longer exist (that belong to this screen)
405 for (it
= _clients
.begin(); it
!= end
;) {
406 WindowList::iterator it2
= it
;
409 // is on another screen?
410 if ((*it2
)->getScreen() != this)
413 for (i
= 0; i
< num
; ++i
)
414 if (**it2
== rootclients
[i
])
416 if (i
== num
) { // no longer exists
417 // cout << "Removed window: 0x" << hex << (*it2)->window() << dec << endl;
418 // watch for the active and last-active window
420 _active
= _clients
.end();
421 if (it2
== _last_active
)
422 _last_active
= _clients
.end();
428 if (rootclients
) delete [] rootclients
;
432 const XWindow
*screen::lastActiveWindow() const {
433 if (_last_active
!= _clients
.end())
434 return *_last_active
;
436 // find a window if one exists
437 WindowList::const_iterator it
, end
= _clients
.end();
438 for (it
= _clients
.begin(); it
!= end
; ++it
)
439 if ((*it
)->getScreen() == this && ! (*it
)->iconic() &&
440 ((*it
)->desktop() == 0xffffffff || (*it
)->desktop() == _active_desktop
))
443 // no windows on this screen
448 void screen::updateActiveWindow() {
452 _xatom
->getValue(_root
, XAtom::net_active_window
, XAtom::window
, a
);
454 WindowList::iterator it
, end
= _clients
.end();
455 for (it
= _clients
.begin(); it
!= end
; ++it
) {
457 if ((*it
)->getScreen() != this)
466 /* cout << "Active window is now: ";
467 if (_active == _clients.end()) cout << "None\n";
468 else cout << "0x" << hex << (*_active)->window() << dec << endl;
473 void screen::execCommand(const string
&cmd
) const {
475 if ((pid
= fork()) == 0) {
476 // make the command run on the correct screen
477 if (putenv(const_cast<char*>(_info
->displayString().c_str()))) {
478 cout
<< "warning: couldn't set environment variable 'DISPLAY'\n";
481 execl("/bin/sh", "sh", "-c", cmd
.c_str(), NULL
);
483 } else if (pid
== -1) {
484 cout
<< _epist
->getApplicationName() <<
485 ": Could not fork a process for executing a command\n";
490 void screen::cycleWindow(const bool forward
, const int increment
,
491 const bool allscreens
, const bool alldesktops
,
492 const bool sameclass
, const string
&cn
) const {
494 assert(increment
> 0);
496 if (_clients
.empty()) return;
498 string
classname(cn
);
499 if (sameclass
&& classname
.empty() && _active
!= _clients
.end())
500 classname
= (*_active
)->appClass();
502 WindowList::const_iterator target
= _active
,
503 begin
= _clients
.begin(),
504 end
= _clients
.end();
506 const XWindow
*t
= 0;
508 for (int x
= 0; x
< increment
; ++x
) {
522 // must be no window to focus
523 if (target
== _active
)
526 // start back at the beginning of the loop
530 // determine if this window is invalid for cycling to
532 if (t
->iconic()) continue;
533 if (! allscreens
&& t
->getScreen() != this) continue;
534 if (! alldesktops
&& ! (t
->desktop() == _active_desktop
||
535 t
->desktop() == 0xffffffff)) continue;
536 if (sameclass
&& ! classname
.empty() &&
537 t
->appClass() != classname
) continue;
538 if (! t
->canFocus()) continue;
540 // found a good window so break out of the while, and perhaps continue
546 // phew. we found the window, so focus it.
551 void screen::cycleWorkspace(const bool forward
, const int increment
,
552 const bool loop
) const {
554 assert(increment
> 0);
556 unsigned int destination
= _active_desktop
;
558 for (int x
= 0; x
< increment
; ++x
) {
560 if (destination
< _num_desktops
- 1)
568 destination
= _num_desktops
- 1;
572 if (destination
!= _active_desktop
)
573 changeWorkspace(destination
);
577 void screen::changeWorkspace(const int num
) const {
580 _xatom
->sendClientMessage(_root
, XAtom::net_current_desktop
, _root
, num
);
583 void screen::changeWorkspaceVert(const int num
) const {
585 const Config
*conf
= _epist
->getConfig();
586 int width
= conf
->getNumberValue(Config::workspaceColumns
);
588 if (width
> _num_desktops
|| width
<= 0)
593 // a cookie to the person that makes this pretty
595 wnum
= _active_desktop
- width
;
597 wnum
= _num_desktops
/width
* width
+ _active_desktop
;
598 if (wnum
>= _num_desktops
)
599 wnum
= _num_desktops
- 1;
603 wnum
= _active_desktop
+ width
;
604 if (wnum
>= _num_desktops
) {
605 wnum
= (_active_desktop
+ width
) % _num_desktops
- 1;
610 changeWorkspace(wnum
);
613 void screen::changeWorkspaceHorz(const int num
) const {
615 const Config
*conf
= _epist
->getConfig();
616 int width
= conf
->getNumberValue(Config::workspaceColumns
);
619 if (width
> _num_desktops
|| width
<= 0)
623 if (_active_desktop
% width
!= 0)
624 changeWorkspace(_active_desktop
- 1);
626 wnum
= _active_desktop
+ width
- 1;
627 if (wnum
>= _num_desktops
)
628 wnum
= _num_desktops
- 1;
632 if (_active_desktop
% width
!= width
- 1) {
633 wnum
= _active_desktop
+ 1;
634 if (wnum
>= _num_desktops
)
635 wnum
= _num_desktops
/ width
* width
;
638 wnum
= _active_desktop
- width
+ 1;
640 changeWorkspace(wnum
);
643 void screen::grabKey(const KeyCode keyCode
, const int modifierMask
) const {
645 Display
*display
= _epist
->getXDisplay();
646 int numlockMask
, scrolllockMask
;
648 _epist
->getLockModifiers(numlockMask
, scrolllockMask
);
650 XGrabKey(display
, keyCode
, modifierMask
,
651 _root
, True
, GrabModeAsync
, GrabModeAsync
);
652 XGrabKey(display
, keyCode
,
653 modifierMask
|LockMask
,
654 _root
, True
, GrabModeAsync
, GrabModeAsync
);
655 XGrabKey(display
, keyCode
,
656 modifierMask
|scrolllockMask
,
657 _root
, True
, GrabModeAsync
, GrabModeAsync
);
658 XGrabKey(display
, keyCode
,
659 modifierMask
|numlockMask
,
660 _root
, True
, GrabModeAsync
, GrabModeAsync
);
662 XGrabKey(display
, keyCode
,
663 modifierMask
|LockMask
|scrolllockMask
,
664 _root
, True
, GrabModeAsync
, GrabModeAsync
);
665 XGrabKey(display
, keyCode
,
666 modifierMask
|scrolllockMask
|numlockMask
,
667 _root
, True
, GrabModeAsync
, GrabModeAsync
);
668 XGrabKey(display
, keyCode
,
669 modifierMask
|numlockMask
|LockMask
,
670 _root
, True
, GrabModeAsync
, GrabModeAsync
);
672 XGrabKey(display
, keyCode
,
673 modifierMask
|numlockMask
|LockMask
|scrolllockMask
,
674 _root
, True
, GrabModeAsync
, GrabModeAsync
);
677 void screen::ungrabKey(const KeyCode keyCode
, const int modifierMask
) const {
679 Display
*display
= _epist
->getXDisplay();
680 int numlockMask
, scrolllockMask
;
682 _epist
->getLockModifiers(numlockMask
, scrolllockMask
);
684 XUngrabKey(display
, keyCode
, modifierMask
, _root
);
685 XUngrabKey(display
, keyCode
, modifierMask
|LockMask
, _root
);
686 XUngrabKey(display
, keyCode
, modifierMask
|scrolllockMask
, _root
);
687 XUngrabKey(display
, keyCode
, modifierMask
|numlockMask
, _root
);
688 XUngrabKey(display
, keyCode
, modifierMask
|LockMask
|scrolllockMask
, _root
);
689 XUngrabKey(display
, keyCode
, modifierMask
|scrolllockMask
|numlockMask
, _root
);
690 XUngrabKey(display
, keyCode
, modifierMask
|numlockMask
|LockMask
, _root
);
691 XUngrabKey(display
, keyCode
, modifierMask
|numlockMask
|LockMask
|
692 scrolllockMask
, _root
);