1 // -*- mode: C++; indent-tabs-mode: nil; -*-
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::execute
:
226 execCommand(it
->string());
233 // these actions require an active window
234 if (_active
!= _clients
.end()) {
235 XWindow
*window
= *_active
;
237 switch (it
->type()) {
238 case Action::iconify
:
254 case Action::sendToWorkspace
:
255 window
->sendTo(it
->number());
258 case Action::toggleomnipresent
:
259 if (window
->desktop() == 0xffffffff)
260 window
->sendTo(_active_desktop
);
262 window
->sendTo(0xffffffff);
265 case Action::moveWindowUp
:
266 window
->move(window
->x(), window
->y() - it
->number());
269 case Action::moveWindowDown
:
270 window
->move(window
->x(), window
->y() + it
->number());
273 case Action::moveWindowLeft
:
274 window
->move(window
->x() - it
->number(), window
->y());
277 case Action::moveWindowRight
:
278 window
->move(window
->x() + it
->number(), window
->y());
281 case Action::resizeWindowWidth
:
282 window
->resizeRel(it
->number(), 0);
285 case Action::resizeWindowHeight
:
286 window
->resizeRel(0, it
->number());
289 case Action::toggleshade
:
290 window
->shade(! window
->shaded());
293 case Action::toggleMaximizeHorizontal
:
294 window
->toggleMaximize(XWindow::Max_Horz
);
297 case Action::toggleMaximizeVertical
:
298 window
->toggleMaximize(XWindow::Max_Vert
);
301 case Action::toggleMaximizeFull
:
302 window
->toggleMaximize(XWindow::Max_Full
);
306 assert(false); // unhandled action type!
312 // do we want to add this window to our list?
313 bool screen::doAddWindow(Window window
) const {
317 if (! _xatom
->getValue(window
, XAtom::net_wm_window_type
, XAtom::atom
,
321 if (type
== _xatom
->getAtom(XAtom::net_wm_window_type_dock
) ||
322 type
== _xatom
->getAtom(XAtom::net_wm_window_type_menu
))
329 void screen::updateEverything() {
331 updateActiveDesktop();
333 updateActiveWindow();
337 void screen::updateNumDesktops() {
340 if (! _xatom
->getValue(_root
, XAtom::net_number_of_desktops
, XAtom::cardinal
,
341 (unsigned long)_num_desktops
))
342 _num_desktops
= 1; // assume that there is at least 1 desktop!
346 void screen::updateActiveDesktop() {
349 if (! _xatom
->getValue(_root
, XAtom::net_current_desktop
, XAtom::cardinal
,
350 (unsigned long)_active_desktop
))
351 _active_desktop
= 0; // there must be at least one desktop, and it must
352 // be the current one
356 void screen::updateClientList() {
359 WindowList::iterator insert_point
= _active
;
360 if (insert_point
!= _clients
.end())
361 ++insert_point
; // get to the item client the focused client
363 // get the client list from the root window
364 Window
*rootclients
= 0;
365 unsigned long num
= (unsigned) -1;
366 if (! _xatom
->getValue(_root
, XAtom::net_client_list
, XAtom::window
, num
,
370 WindowList::iterator it
;
371 const WindowList::iterator end
= _clients
.end();
374 // insert new clients after the active window
375 for (i
= 0; i
< num
; ++i
) {
376 for (it
= _clients
.begin(); it
!= end
; ++it
)
377 if (**it
== rootclients
[i
])
379 if (it
== end
) { // didn't already exist
380 if (doAddWindow(rootclients
[i
])) {
381 // cout << "Added window: 0x" << hex << rootclients[i] << dec << endl;
382 _clients
.insert(insert_point
, new XWindow(_epist
, this,
388 // remove clients that no longer exist (that belong to this screen)
389 for (it
= _clients
.begin(); it
!= end
;) {
390 WindowList::iterator it2
= it
;
393 // is on another screen?
394 if ((*it2
)->getScreen() != this)
397 for (i
= 0; i
< num
; ++i
)
398 if (**it2
== rootclients
[i
])
400 if (i
== num
) { // no longer exists
401 // cout << "Removed window: 0x" << hex << (*it2)->window() << dec << endl;
402 // watch for the active and last-active window
404 _active
= _clients
.end();
405 if (it2
== _last_active
)
406 _last_active
= _clients
.end();
412 if (rootclients
) delete [] rootclients
;
416 const XWindow
*screen::lastActiveWindow() const {
417 if (_last_active
!= _clients
.end())
418 return *_last_active
;
420 // find a window if one exists
421 WindowList::const_iterator it
, end
= _clients
.end();
422 for (it
= _clients
.begin(); it
!= end
; ++it
)
423 if ((*it
)->getScreen() == this && ! (*it
)->iconic() &&
424 ((*it
)->desktop() == 0xffffffff || (*it
)->desktop() == _active_desktop
))
427 // no windows on this screen
432 void screen::updateActiveWindow() {
436 _xatom
->getValue(_root
, XAtom::net_active_window
, XAtom::window
, a
);
438 WindowList::iterator it
, end
= _clients
.end();
439 for (it
= _clients
.begin(); it
!= end
; ++it
) {
441 if ((*it
)->getScreen() != this)
449 /* cout << "Active window is now: ";
450 if (_active == _clients.end()) cout << "None\n";
451 else cout << "0x" << hex << (*_active)->window() << dec << endl;
456 void screen::execCommand(const string
&cmd
) const {
458 if ((pid
= fork()) == 0) {
459 // make the command run on the correct screen
460 if (putenv(const_cast<char*>(_info
->displayString().c_str()))) {
461 cout
<< "warning: couldn't set environment variable 'DISPLAY'\n";
464 execl("/bin/sh", "sh", "-c", cmd
.c_str(), NULL
);
466 } else if (pid
== -1) {
467 cout
<< _epist
->getApplicationName() <<
468 ": Could not fork a process for executing a command\n";
473 void screen::cycleWindow(const bool forward
, const int increment
,
474 const bool allscreens
, const bool alldesktops
,
475 const bool sameclass
, const string
&cn
) const {
477 assert(increment
> 0);
479 if (_clients
.empty()) return;
481 string
classname(cn
);
482 if (sameclass
&& classname
.empty() && _active
!= _clients
.end())
483 classname
= (*_active
)->appClass();
485 WindowList::const_iterator target
= _active
,
486 begin
= _clients
.begin(),
487 end
= _clients
.end();
489 const XWindow
*t
= 0;
491 for (int x
= 0; x
< increment
; ++x
) {
505 // must be no window to focus
506 if (target
== _active
)
509 // start back at the beginning of the loop
513 // determine if this window is invalid for cycling to
515 if (t
->iconic()) continue;
516 if (! allscreens
&& t
->getScreen() != this) continue;
517 if (! alldesktops
&& ! (t
->desktop() == _active_desktop
||
518 t
->desktop() == 0xffffffff)) continue;
519 if (sameclass
&& ! classname
.empty() &&
520 t
->appClass() != classname
) continue;
521 if (! t
->canFocus()) continue;
523 // found a good window so break out of the while, and perhaps continue
529 // phew. we found the window, so focus it.
534 void screen::cycleWorkspace(const bool forward
, const int increment
,
535 const bool loop
) const {
537 assert(increment
> 0);
539 unsigned int destination
= _active_desktop
;
541 for (int x
= 0; x
< increment
; ++x
) {
543 if (destination
< _num_desktops
- 1)
551 destination
= _num_desktops
- 1;
555 if (destination
!= _active_desktop
)
556 changeWorkspace(destination
);
560 void screen::changeWorkspace(const int num
) const {
563 _xatom
->sendClientMessage(_root
, XAtom::net_current_desktop
, _root
, num
);
566 void screen::grabKey(const KeyCode keyCode
, const int modifierMask
) const {
568 Display
*display
= _epist
->getXDisplay();
569 int numlockMask
, scrolllockMask
;
571 _epist
->getLockModifiers(numlockMask
, scrolllockMask
);
573 XGrabKey(display
, keyCode
, modifierMask
,
574 _root
, True
, GrabModeAsync
, GrabModeAsync
);
575 XGrabKey(display
, keyCode
,
576 modifierMask
|LockMask
,
577 _root
, True
, GrabModeAsync
, GrabModeAsync
);
578 XGrabKey(display
, keyCode
,
579 modifierMask
|scrolllockMask
,
580 _root
, True
, GrabModeAsync
, GrabModeAsync
);
581 XGrabKey(display
, keyCode
,
582 modifierMask
|numlockMask
,
583 _root
, True
, GrabModeAsync
, GrabModeAsync
);
585 XGrabKey(display
, keyCode
,
586 modifierMask
|LockMask
|scrolllockMask
,
587 _root
, True
, GrabModeAsync
, GrabModeAsync
);
588 XGrabKey(display
, keyCode
,
589 modifierMask
|scrolllockMask
|numlockMask
,
590 _root
, True
, GrabModeAsync
, GrabModeAsync
);
591 XGrabKey(display
, keyCode
,
592 modifierMask
|numlockMask
|LockMask
,
593 _root
, True
, GrabModeAsync
, GrabModeAsync
);
595 XGrabKey(display
, keyCode
,
596 modifierMask
|numlockMask
|LockMask
|scrolllockMask
,
597 _root
, True
, GrabModeAsync
, GrabModeAsync
);
600 void screen::ungrabKey(const KeyCode keyCode
, const int modifierMask
) const {
602 Display
*display
= _epist
->getXDisplay();
603 int numlockMask
, scrolllockMask
;
605 _epist
->getLockModifiers(numlockMask
, scrolllockMask
);
607 XUngrabKey(display
, keyCode
, modifierMask
, _root
);
608 XUngrabKey(display
, keyCode
, modifierMask
|LockMask
, _root
);
609 XUngrabKey(display
, keyCode
, modifierMask
|scrolllockMask
, _root
);
610 XUngrabKey(display
, keyCode
, modifierMask
|numlockMask
, _root
);
611 XUngrabKey(display
, keyCode
, modifierMask
|LockMask
|scrolllockMask
, _root
);
612 XUngrabKey(display
, keyCode
, modifierMask
|scrolllockMask
|numlockMask
, _root
);
613 XUngrabKey(display
, keyCode
, modifierMask
|numlockMask
|LockMask
, _root
);
614 XUngrabKey(display
, keyCode
, modifierMask
|numlockMask
|LockMask
|
615 scrolllockMask
, _root
);