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
;
150 ActionList::const_iterator it
= _epist
->actions().begin();
151 ActionList::const_iterator end
= _epist
->actions().end();
153 _epist
->getLockModifiers(numlockMask
, scrolllockMask
);
155 for (; it
!= end
; ++it
) {
156 unsigned int state
= e
.xkey
.state
& ~(LockMask
|scrolllockMask
|numlockMask
);
158 if (e
.xkey
.keycode
== it
->keycode() &&
159 state
== it
->modifierMask()) {
160 switch (it
->type()) {
161 case Action::nextScreen
:
162 _epist
->cycleScreen(_number
, true);
165 case Action::prevScreen
:
166 _epist
->cycleScreen(_number
, false);
169 case Action::nextWorkspace
:
170 cycleWorkspace(true);
173 case Action::prevWorkspace
:
174 cycleWorkspace(false);
177 case Action::nextWindow
:
181 case Action::prevWindow
:
185 case Action::nextWindowOnAllWorkspaces
:
186 cycleWindow(true, false, true);
189 case Action::prevWindowOnAllWorkspaces
:
190 cycleWindow(false, false, true);
193 case Action::nextWindowOnAllScreens
:
194 cycleWindow(true, true);
197 case Action::prevWindowOnAllScreens
:
198 cycleWindow(false, true);
201 case Action::nextWindowOfClass
:
202 cycleWindow(true, false, false, true, it
->string());
205 case Action::prevWindowOfClass
:
206 cycleWindow(false, false, false, true, it
->string());
209 case Action::nextWindowOfClassOnAllWorkspaces
:
210 cycleWindow(true, false, true, true, it
->string());
213 case Action::prevWindowOfClassOnAllWorkspaces
:
214 cycleWindow(false, false, true, true, it
->string());
217 case Action::changeWorkspace
:
218 changeWorkspace(it
->number());
221 case Action::execute
:
222 execCommand(it
->string());
229 // these actions require an active window
230 if (_active
!= _clients
.end()) {
231 XWindow
*window
= *_active
;
233 switch (it
->type()) {
234 case Action::iconify
:
250 case Action::sendToWorkspace
:
251 window
->sendTo(it
->number());
254 case Action::toggleomnipresent
:
255 if (window
->desktop() == 0xffffffff)
256 window
->sendTo(_active_desktop
);
258 window
->sendTo(0xffffffff);
261 case Action::moveWindowUp
:
262 window
->move(window
->x(), window
->y() - it
->number());
265 case Action::moveWindowDown
:
266 window
->move(window
->x(), window
->y() + it
->number());
269 case Action::moveWindowLeft
:
270 window
->move(window
->x() - it
->number(), window
->y());
273 case Action::moveWindowRight
:
274 window
->move(window
->x() + it
->number(), window
->y());
277 case Action::resizeWindowWidth
:
278 window
->resize(window
->width() + it
->number(), window
->height());
281 case Action::resizeWindowHeight
:
282 window
->resize(window
->width(), window
->height() + it
->number());
285 case Action::toggleshade
:
286 window
->shade(! window
->shaded());
289 case Action::toggleMaximizeHorizontal
:
290 window
->toggleMaximize(XWindow::Max_Horz
);
293 case Action::toggleMaximizeVertical
:
294 window
->toggleMaximize(XWindow::Max_Vert
);
297 case Action::toggleMaximizeFull
:
298 window
->toggleMaximize(XWindow::Max_Full
);
302 assert(false); // unhandled action type!
310 // do we want to add this window to our list?
311 bool screen::doAddWindow(Window window
) const {
315 if (! _xatom
->getValue(window
, XAtom::net_wm_window_type
, XAtom::atom
,
319 if (type
== _xatom
->getAtom(XAtom::net_wm_window_type_dock
) ||
320 type
== _xatom
->getAtom(XAtom::net_wm_window_type_menu
))
327 void screen::updateEverything() {
329 updateActiveDesktop();
331 updateActiveWindow();
335 void screen::updateNumDesktops() {
338 if (! _xatom
->getValue(_root
, XAtom::net_number_of_desktops
, XAtom::cardinal
,
339 (unsigned long)_num_desktops
))
340 _num_desktops
= 1; // assume that there is at least 1 desktop!
344 void screen::updateActiveDesktop() {
347 if (! _xatom
->getValue(_root
, XAtom::net_current_desktop
, XAtom::cardinal
,
348 (unsigned long)_active_desktop
))
349 _active_desktop
= 0; // there must be at least one desktop, and it must
350 // be the current one
354 void screen::updateClientList() {
357 WindowList::iterator insert_point
= _active
;
358 if (insert_point
!= _clients
.end())
359 ++insert_point
; // get to the item client the focused client
361 // get the client list from the root window
362 Window
*rootclients
= 0;
363 unsigned long num
= (unsigned) -1;
364 if (! _xatom
->getValue(_root
, XAtom::net_client_list
, XAtom::window
, num
,
368 WindowList::iterator it
;
369 const WindowList::iterator end
= _clients
.end();
372 // insert new clients after the active window
373 for (i
= 0; i
< num
; ++i
) {
374 for (it
= _clients
.begin(); it
!= end
; ++it
)
375 if (**it
== rootclients
[i
])
377 if (it
== end
) { // didn't already exist
378 if (doAddWindow(rootclients
[i
])) {
379 // cout << "Added window: 0x" << hex << rootclients[i] << dec << endl;
380 _clients
.insert(insert_point
, new XWindow(_epist
, this,
386 // remove clients that no longer exist (that belong to this screen)
387 for (it
= _clients
.begin(); it
!= end
;) {
388 WindowList::iterator it2
= it
;
391 // is on another screen?
392 if ((*it2
)->getScreen() != this)
395 for (i
= 0; i
< num
; ++i
)
396 if (**it2
== rootclients
[i
])
398 if (i
== num
) { // no longer exists
399 // cout << "Removed window: 0x" << hex << (*it2)->window() << dec << endl;
400 // watch for the active and last-active window
402 _active
= _clients
.end();
403 if (it2
== _last_active
)
404 _last_active
= _clients
.end();
410 if (rootclients
) delete [] rootclients
;
414 const XWindow
*screen::lastActiveWindow() const {
415 if (_last_active
!= _clients
.end())
416 return *_last_active
;
418 // find a window if one exists
419 WindowList::const_iterator it
, end
= _clients
.end();
420 for (it
= _clients
.begin(); it
!= end
; ++it
)
421 if ((*it
)->getScreen() == this && ! (*it
)->iconic() &&
422 ((*it
)->desktop() == 0xffffffff || (*it
)->desktop() == _active_desktop
))
425 // no windows on this screen
430 void screen::updateActiveWindow() {
434 _xatom
->getValue(_root
, XAtom::net_active_window
, XAtom::window
, a
);
436 WindowList::iterator it
, end
= _clients
.end();
437 for (it
= _clients
.begin(); it
!= end
; ++it
) {
439 if ((*it
)->getScreen() != this)
448 /* cout << "Active window is now: ";
449 if (_active == _clients.end()) cout << "None\n";
450 else cout << "0x" << hex << (*_active)->window() << dec << endl;
455 void screen::execCommand(const string
&cmd
) const {
457 if ((pid
= fork()) == 0) {
458 // make the command run on the correct screen
459 if (putenv(const_cast<char*>(_info
->displayString().c_str()))) {
460 cout
<< "warning: couldn't set environment variable 'DISPLAY'\n";
463 execl("/bin/sh", "sh", "-c", cmd
.c_str(), NULL
);
465 } else if (pid
== -1) {
466 cout
<< _epist
->getApplicationName() <<
467 ": Could not fork a process for executing a command\n";
472 void screen::cycleWindow(const bool forward
, const bool allscreens
,
473 const bool alldesktops
, const bool sameclass
,
474 const string
&cn
) const {
477 if (_clients
.empty()) return;
479 string
classname(cn
);
480 if (sameclass
&& classname
.empty() && _active
!= _clients
.end())
481 classname
= (*_active
)->appClass();
483 WindowList::const_iterator target
= _active
,
484 begin
= _clients
.begin(),
485 end
= _clients
.end();
502 // must be no window to focus
503 if (target
== _active
)
506 // determine if this window is invalid for cycling to
507 const XWindow
*t
= *target
;
508 if (t
->iconic()) continue;
509 if (! allscreens
&& t
->getScreen() != this) continue;
510 if (! alldesktops
&& ! (t
->desktop() == _active_desktop
||
511 t
->desktop() == 0xffffffff)) continue;
512 if (sameclass
&& ! classname
.empty() &&
513 t
->appClass() != classname
) continue;
514 if (! t
->canFocus()) continue;
516 // found a good window!
523 void screen::cycleWorkspace(const bool forward
, const bool loop
) const {
526 unsigned int destination
= _active_desktop
;
529 if (destination
< _num_desktops
- 1)
537 destination
= _num_desktops
- 1;
540 if (destination
!= _active_desktop
)
541 changeWorkspace(destination
);
545 void screen::changeWorkspace(const int num
) const {
548 _xatom
->sendClientMessage(_root
, XAtom::net_current_desktop
, _root
, num
);
551 void screen::grabKey(const KeyCode keyCode
, const int modifierMask
) const {
553 Display
*display
= _epist
->getXDisplay();
554 int numlockMask
, scrolllockMask
;
556 _epist
->getLockModifiers(numlockMask
, scrolllockMask
);
558 XGrabKey(display
, keyCode
, modifierMask
,
559 _root
, True
, GrabModeAsync
, GrabModeAsync
);
560 XGrabKey(display
, keyCode
,
561 modifierMask
|LockMask
,
562 _root
, True
, GrabModeAsync
, GrabModeAsync
);
563 XGrabKey(display
, keyCode
,
564 modifierMask
|scrolllockMask
,
565 _root
, True
, GrabModeAsync
, GrabModeAsync
);
566 XGrabKey(display
, keyCode
,
567 modifierMask
|numlockMask
,
568 _root
, True
, GrabModeAsync
, GrabModeAsync
);
570 XGrabKey(display
, keyCode
,
571 modifierMask
|LockMask
|scrolllockMask
,
572 _root
, True
, GrabModeAsync
, GrabModeAsync
);
573 XGrabKey(display
, keyCode
,
574 modifierMask
|scrolllockMask
|numlockMask
,
575 _root
, True
, GrabModeAsync
, GrabModeAsync
);
576 XGrabKey(display
, keyCode
,
577 modifierMask
|numlockMask
|LockMask
,
578 _root
, True
, GrabModeAsync
, GrabModeAsync
);
580 XGrabKey(display
, keyCode
,
581 modifierMask
|numlockMask
|LockMask
|scrolllockMask
,
582 _root
, True
, GrabModeAsync
, GrabModeAsync
);