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 cout
<< "root window on screen " << _number
<< ": 0x" << hex
<< _root
<<
66 // find a window manager supporting NETWM, waiting for it to load if we must
67 int count
= 20; // try for 20 seconds
69 while (! (_epist
->doShutdown() || _managed
|| count
<= 0)) {
70 if (! (_managed
= findSupportingWM()))
75 cout
<< "Found compatible window manager '" << _wm_name
<< "' for screen "
78 cout
<< "Unable to find a compatible window manager for screen " <<
83 XSelectInput(_epist
->getXDisplay(), _root
, PropertyChangeMask
);
88 XSelectInput(_epist
->getXDisplay(), _root
, None
);
92 bool screen::findSupportingWM() {
94 if (! _xatom
->getValue(_root
, XAtom::net_supporting_wm_check
, XAtom::window
,
95 support_win
) || support_win
== None
)
99 _xatom
->getValue(support_win
, XAtom::net_wm_name
, XAtom::utf8
, title
);
105 XWindow
*screen::findWindow(const XEvent
&e
) const {
108 WindowList::const_iterator it
, end
= _clients
.end();
109 for (it
= _clients
.begin(); it
!= end
; ++it
)
110 if (**it
== e
.xany
.window
)
118 void screen::processEvent(const XEvent
&e
) {
120 assert(e
.xany
.window
== _root
);
125 if (e
.xproperty
.atom
== _xatom
->getAtom(XAtom::net_number_of_desktops
))
127 if (e
.xproperty
.atom
== _xatom
->getAtom(XAtom::net_current_desktop
))
128 updateActiveDesktop();
129 if (e
.xproperty
.atom
== _xatom
->getAtom(XAtom::net_active_window
))
130 updateActiveWindow();
131 if (e
.xproperty
.atom
== _xatom
->getAtom(XAtom::net_client_list
)) {
132 // catch any window unmaps first
134 if (XCheckTypedWindowEvent(_epist
->getXDisplay(), e
.xany
.window
,
135 DestroyNotify
, &ev
) ||
136 XCheckTypedWindowEvent(_epist
->getXDisplay(), e
.xany
.window
,
150 void screen::handleKeypress(const XEvent
&e
) {
151 int scrolllockMask
, numlockMask
;
153 ActionList::const_iterator it
= _epist
->actions().begin();
154 ActionList::const_iterator end
= _epist
->actions().end();
156 _epist
->getLockModifiers(numlockMask
, scrolllockMask
);
158 for (; it
!= end
; ++it
) {
159 unsigned int state
= e
.xkey
.state
& ~(LockMask
|scrolllockMask
|numlockMask
);
161 if (e
.xkey
.keycode
== it
->keycode() &&
162 state
== it
->modifierMask()) {
163 switch (it
->type()) {
164 case Action::nextScreen
:
165 _epist
->cycleScreen(_number
, true);
168 case Action::prevScreen
:
169 _epist
->cycleScreen(_number
, false);
172 case Action::nextWorkspace
:
173 cycleWorkspace(true);
176 case Action::prevWorkspace
:
177 cycleWorkspace(false);
180 case Action::nextWindow
:
184 case Action::prevWindow
:
188 case Action::nextWindowOnAllWorkspaces
:
189 cycleWindow(true, false, true);
192 case Action::prevWindowOnAllWorkspaces
:
193 cycleWindow(false, false, true);
196 case Action::nextWindowOnAllScreens
:
197 cycleWindow(true, true);
200 case Action::prevWindowOnAllScreens
:
201 cycleWindow(false, true);
204 case Action::nextWindowOfClass
:
205 cycleWindow(true, false, false, true, it
->string());
208 case Action::prevWindowOfClass
:
209 cycleWindow(false, false, false, true, it
->string());
212 case Action::nextWindowOfClassOnAllWorkspaces
:
213 cycleWindow(true, false, true, true, it
->string());
216 case Action::prevWindowOfClassOnAllWorkspaces
:
217 cycleWindow(false, false, true, true, it
->string());
220 case Action::changeWorkspace
:
221 changeWorkspace(it
->number());
224 case Action::execute
:
225 execCommand(it
->string());
232 // these actions require an active window
233 if (_active
!= _clients
.end()) {
234 XWindow
*window
= *_active
;
236 switch (it
->type()) {
237 case Action::iconify
:
253 case Action::sendToWorkspace
:
254 window
->sendTo(it
->number());
257 case Action::toggleomnipresent
:
258 if (window
->desktop() == 0xffffffff)
259 window
->sendTo(_active_desktop
);
261 window
->sendTo(0xffffffff);
264 case Action::moveWindowUp
:
265 window
->move(window
->x(), window
->y() - it
->number());
268 case Action::moveWindowDown
:
269 window
->move(window
->x(), window
->y() + it
->number());
272 case Action::moveWindowLeft
:
273 window
->move(window
->x() - it
->number(), window
->y());
276 case Action::moveWindowRight
:
277 window
->move(window
->x() + it
->number(), window
->y());
280 case Action::resizeWindowWidth
:
281 window
->resize(window
->width() + it
->number(), window
->height());
284 case Action::resizeWindowHeight
:
285 window
->resize(window
->width(), window
->height() + it
->number());
288 case Action::toggleshade
:
289 window
->shade(! window
->shaded());
292 case Action::toggleMaximizeHorizontal
:
293 window
->toggleMaximize(XWindow::Max_Horz
);
296 case Action::toggleMaximizeVertical
:
297 window
->toggleMaximize(XWindow::Max_Vert
);
300 case Action::toggleMaximizeFull
:
301 window
->toggleMaximize(XWindow::Max_Full
);
305 assert(false); // unhandled action type!
313 // do we want to add this window to our list?
314 bool screen::doAddWindow(Window window
) const {
318 if (! _xatom
->getValue(window
, XAtom::net_wm_window_type
, XAtom::atom
,
322 if (type
== _xatom
->getAtom(XAtom::net_wm_window_type_dock
) ||
323 type
== _xatom
->getAtom(XAtom::net_wm_window_type_menu
))
330 void screen::updateEverything() {
332 updateActiveDesktop();
334 updateActiveWindow();
338 void screen::updateNumDesktops() {
341 if (! _xatom
->getValue(_root
, XAtom::net_number_of_desktops
, XAtom::cardinal
,
342 (unsigned long)_num_desktops
))
343 _num_desktops
= 1; // assume that there is at least 1 desktop!
347 void screen::updateActiveDesktop() {
350 if (! _xatom
->getValue(_root
, XAtom::net_current_desktop
, XAtom::cardinal
,
351 (unsigned long)_active_desktop
))
352 _active_desktop
= 0; // there must be at least one desktop, and it must
353 // be the current one
357 void screen::updateClientList() {
360 WindowList::iterator insert_point
= _active
;
361 if (insert_point
!= _clients
.end())
362 ++insert_point
; // get to the item client the focused client
364 // get the client list from the root window
365 Window
*rootclients
= 0;
366 unsigned long num
= (unsigned) -1;
367 if (! _xatom
->getValue(_root
, XAtom::net_client_list
, XAtom::window
, num
,
371 WindowList::iterator it
;
372 const WindowList::iterator end
= _clients
.end();
375 // insert new clients after the active window
376 for (i
= 0; i
< num
; ++i
) {
377 for (it
= _clients
.begin(); it
!= end
; ++it
)
378 if (**it
== rootclients
[i
])
380 if (it
== end
) { // didn't already exist
381 if (doAddWindow(rootclients
[i
])) {
382 // cout << "Added window: 0x" << hex << rootclients[i] << dec << endl;
383 _clients
.insert(insert_point
, new XWindow(_epist
, this,
389 // remove clients that no longer exist (that belong to this screen)
390 for (it
= _clients
.begin(); it
!= end
;) {
391 WindowList::iterator it2
= it
;
394 // is on another screen?
395 if ((*it2
)->getScreen() != this)
398 for (i
= 0; i
< num
; ++i
)
399 if (**it2
== rootclients
[i
])
401 if (i
== num
) { // no longer exists
402 // cout << "Removed window: 0x" << hex << (*it2)->window() << dec << endl;
403 // watch for the active and last-active window
405 _active
= _clients
.end();
406 if (it2
== _last_active
)
407 _last_active
= _clients
.end();
413 if (rootclients
) delete [] rootclients
;
417 const XWindow
*screen::lastActiveWindow() const {
418 if (_last_active
!= _clients
.end())
419 return *_last_active
;
421 // find a window if one exists
422 WindowList::const_iterator it
, end
= _clients
.end();
423 for (it
= _clients
.begin(); it
!= end
; ++it
)
424 if ((*it
)->getScreen() == this)
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 extern char **environ
;
461 char *const argv
[] = {
464 const_cast<char *>(cmd
.c_str()),
467 // make the command run on the correct screen
468 if (putenv(const_cast<char*>(_info
->displayString().c_str()))) {
469 cout
<< "warning: couldn't set environment variable 'DISPLAY'\n";
472 execve("/bin/sh", argv
, environ
);
474 } else if (pid
== -1) {
475 cout
<< _epist
->getApplicationName() <<
476 ": Could not fork a process for executing a command\n";
481 void screen::cycleWindow(const bool forward
, const bool allscreens
,
482 const bool alldesktops
, const bool sameclass
,
483 const string
&cn
) const {
486 if (_clients
.empty()) return;
488 string
classname(cn
);
489 if (sameclass
&& classname
.empty() && _active
!= _clients
.end())
490 classname
= (*_active
)->appClass();
492 WindowList::const_iterator target
= _active
,
494 begin
= _clients
.begin(),
495 end
= _clients
.end();
512 // must be no window to focus
515 } while ((*target
)->iconic() ||
516 (! allscreens
&& (*target
)->getScreen() != this) ||
517 (! alldesktops
&& (*target
)->desktop() != _active_desktop
) ||
518 (sameclass
&& ! classname
.empty() &&
519 (*target
)->appClass() != classname
));
521 if (target
!= _clients
.end())
526 void screen::cycleWorkspace(const bool forward
, const bool loop
) const {
529 unsigned int destination
= _active_desktop
;
532 if (destination
< _num_desktops
- 1)
540 destination
= _num_desktops
- 1;
543 if (destination
!= _active_desktop
)
544 changeWorkspace(destination
);
548 void screen::changeWorkspace(const int num
) const {
551 _xatom
->sendClientMessage(_root
, XAtom::net_current_desktop
, _root
, num
);
554 void screen::grabKey(const KeyCode keyCode
, const int modifierMask
) const {
556 Display
*display
= _epist
->getXDisplay();
557 int numlockMask
, scrolllockMask
;
559 _epist
->getLockModifiers(numlockMask
, scrolllockMask
);
561 XGrabKey(display
, keyCode
, modifierMask
,
562 _root
, True
, GrabModeAsync
, GrabModeAsync
);
563 XGrabKey(display
, keyCode
,
564 modifierMask
|LockMask
,
565 _root
, True
, GrabModeAsync
, GrabModeAsync
);
566 XGrabKey(display
, keyCode
,
567 modifierMask
|scrolllockMask
,
568 _root
, True
, GrabModeAsync
, GrabModeAsync
);
569 XGrabKey(display
, keyCode
,
570 modifierMask
|numlockMask
,
571 _root
, True
, GrabModeAsync
, GrabModeAsync
);
573 XGrabKey(display
, keyCode
,
574 modifierMask
|LockMask
|scrolllockMask
,
575 _root
, True
, GrabModeAsync
, GrabModeAsync
);
576 XGrabKey(display
, keyCode
,
577 modifierMask
|scrolllockMask
|numlockMask
,
578 _root
, True
, GrabModeAsync
, GrabModeAsync
);
579 XGrabKey(display
, keyCode
,
580 modifierMask
|numlockMask
|LockMask
,
581 _root
, True
, GrabModeAsync
, GrabModeAsync
);
583 XGrabKey(display
, keyCode
,
584 modifierMask
|numlockMask
|LockMask
|scrolllockMask
,
585 _root
, True
, GrabModeAsync
, GrabModeAsync
);