840 lines
23 KiB
C++
840 lines
23 KiB
C++
// -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
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// screen.cc for Epistrophy - a key handler for NETWM/EWMH window managers.
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// Copyright (c) 2002 - 2002 Ben Jansens <ben at orodu.net>
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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/* A few comments about stacked cycling:
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* When stacked cycling is turned on, the focused window is always at the top
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* (front) of the list (_clients), EXCEPT for when we are in cycling mode.
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* (_cycling is true) If we were to add the focused window to the top of the
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* stack while we were cycling, we would end in a deadlock between 2 windows.
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* When the modifiers are released, the window that has focus (but it's not
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* at the top of the stack, since we are cycling) is placed at the top of the
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* stack and raised.
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* Hooray and Bummy. - Marius
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*/
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#ifdef HAVE_CONFIG_H
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# include "../../config.h"
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#endif // HAVE_CONFIG_H
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extern "C" {
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#ifdef HAVE_STDIO_H
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# include <stdio.h>
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#endif // HAVE_STDIO_H
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#ifdef HAVE_UNISTD_H
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# include <sys/types.h>
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# include <unistd.h>
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#endif // HAVE_UNISTD_H
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#include <X11/keysym.h>
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}
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#include <iostream>
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#include <string>
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using std::cout;
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using std::endl;
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using std::hex;
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using std::dec;
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using std::string;
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#include "../../src/BaseDisplay.hh"
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#include "../../src/XAtom.hh"
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#include "screen.hh"
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#include "epist.hh"
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#include "config.hh"
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screen::screen(epist *epist, int number)
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: _clients(epist->clientsList()), _active(epist->activeWindow()),
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_config(epist->getConfig()), _grabbed(true), _cycling(false),
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_stacked_cycling(false)
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{
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_epist = epist;
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_xatom = _epist->xatom();
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_last_active = _clients.end();
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_number = number;
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_info = _epist->getScreenInfo(_number);
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_root = _info->getRootWindow();
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_config->getValue(Config::stackedCycling, _stacked_cycling);
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// find a window manager supporting NETWM, waiting for it to load if we must
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int count = 20; // try for 20 seconds
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_managed = false;
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while (! (_epist->doShutdown() || _managed || count <= 0)) {
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if (! (_managed = findSupportingWM()))
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sleep(1);
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--count;
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}
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if (_managed)
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cout << "Found compatible window manager '" << _wm_name << "' for screen "
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<< _number << ".\n";
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else {
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cout << "Unable to find a compatible window manager for screen " <<
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_number << ".\n";
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return;
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}
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XSelectInput(_epist->getXDisplay(), _root, PropertyChangeMask);
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}
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screen::~screen() {
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if (_managed)
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XSelectInput(_epist->getXDisplay(), _root, None);
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}
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bool screen::findSupportingWM() {
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Window support_win;
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if (! _xatom->getValue(_root, XAtom::net_supporting_wm_check, XAtom::window,
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support_win) || support_win == None)
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return false;
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string title;
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_xatom->getValue(support_win, XAtom::net_wm_name, XAtom::utf8, title);
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_wm_name = title;
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return true;
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}
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XWindow *screen::findWindow(const XEvent &e) const {
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assert(_managed);
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WindowList::const_iterator it, end = _clients.end();
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for (it = _clients.begin(); it != end; ++it)
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if (**it == e.xany.window)
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break;
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if(it == end)
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return 0;
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return *it;
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}
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void screen::processEvent(const XEvent &e) {
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assert(_managed);
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assert(e.xany.window == _root);
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switch (e.type) {
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case PropertyNotify:
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// root window
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if (e.xproperty.atom == _xatom->getAtom(XAtom::net_number_of_desktops))
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updateNumDesktops();
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else if (e.xproperty.atom == _xatom->getAtom(XAtom::net_current_desktop))
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updateActiveDesktop();
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else if (e.xproperty.atom == _xatom->getAtom(XAtom::net_active_window))
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updateActiveWindow();
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else if (e.xproperty.atom == _xatom->getAtom(XAtom::net_client_list)) {
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// catch any window unmaps first
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XEvent ev;
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if (XCheckTypedWindowEvent(_epist->getXDisplay(), e.xany.window,
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DestroyNotify, &ev) ||
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XCheckTypedWindowEvent(_epist->getXDisplay(), e.xany.window,
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UnmapNotify, &ev)) {
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XWindow *win = _epist->findWindow(e.xany.window);
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if (win) win->processEvent(ev);
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}
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updateClientList();
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}
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break;
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case KeyPress:
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handleKeypress(e);
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break;
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case KeyRelease:
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handleKeyrelease(e);
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break;
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default:
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break;
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}
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}
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void screen::handleKeypress(const XEvent &e) {
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int scrolllockMask, numlockMask;
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_epist->getLockModifiers(numlockMask, scrolllockMask);
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// Mask out the lock modifiers. We want our keys to always work
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// This should be made an option
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unsigned int state = e.xkey.state & ~(LockMask|scrolllockMask|numlockMask);
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keytree &ktree = _epist->getKeyTree();
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const Action *it = ktree.getAction(e, state, this);
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if (!it)
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return;
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switch (it->type()) {
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case Action::nextScreen:
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_epist->cycleScreen(_number, true);
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return;
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case Action::prevScreen:
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_epist->cycleScreen(_number, false);
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return;
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case Action::nextWorkspace:
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cycleWorkspace(true, it->number() != 0 ? it->number(): 1);
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return;
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case Action::prevWorkspace:
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cycleWorkspace(false, it->number() != 0 ? it->number(): 1);
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return;
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case Action::nextWindow:
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cycleWindow(state, true, it->number() != 0 ? it->number(): 1);
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return;
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case Action::prevWindow:
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cycleWindow(state, false, it->number() != 0 ? it->number(): 1);
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return;
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case Action::nextWindowOnAllWorkspaces:
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cycleWindow(state, true, it->number() != 0 ? it->number(): 1, false, true);
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return;
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case Action::prevWindowOnAllWorkspaces:
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cycleWindow(state, false, it->number() != 0 ? it->number(): 1, false, true);
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return;
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case Action::nextWindowOnAllScreens:
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cycleWindow(state, true, it->number() != 0 ? it->number(): 1, true);
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return;
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case Action::prevWindowOnAllScreens:
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cycleWindow(state, false, it->number() != 0 ? it->number(): 1, true);
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return;
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case Action::nextWindowOfClass:
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cycleWindow(state, true, it->number() != 0 ? it->number(): 1,
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false, false, true, it->string());
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return;
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case Action::prevWindowOfClass:
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cycleWindow(state, false, it->number() != 0 ? it->number(): 1,
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false, false, true, it->string());
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return;
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case Action::nextWindowOfClassOnAllWorkspaces:
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cycleWindow(state, true, it->number() != 0 ? it->number(): 1,
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false, true, true, it->string());
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return;
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case Action::prevWindowOfClassOnAllWorkspaces:
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cycleWindow(state, false, it->number() != 0 ? it->number(): 1,
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false, true, true, it->string());
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return;
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case Action::changeWorkspace:
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changeWorkspace(it->number());
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return;
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case Action::upWorkspace:
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changeWorkspaceVert(-1);
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return;
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case Action::downWorkspace:
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changeWorkspaceVert(1);
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return;
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case Action::leftWorkspace:
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changeWorkspaceHorz(-1);
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return;
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case Action::rightWorkspace:
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changeWorkspaceHorz(1);
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return;
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case Action::execute:
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execCommand(it->string());
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return;
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case Action::showRootMenu:
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_xatom->sendClientMessage(rootWindow(), XAtom::openbox_show_root_menu,
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None);
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return;
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case Action::showWorkspaceMenu:
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_xatom->sendClientMessage(rootWindow(), XAtom::openbox_show_workspace_menu,
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None);
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return;
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case Action::toggleGrabs: {
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if (_grabbed) {
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ktree.ungrabDefaults(this);
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_grabbed = false;
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} else {
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ktree.grabDefaults(this);
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_grabbed = true;
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}
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return;
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}
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default:
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break;
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}
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// these actions require an active window
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if (_active != _clients.end()) {
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XWindow *window = *_active;
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switch (it->type()) {
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case Action::iconify:
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window->iconify();
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return;
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case Action::close:
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window->close();
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return;
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case Action::raise:
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window->raise();
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return;
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case Action::lower:
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window->lower();
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return;
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case Action::sendToWorkspace:
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window->sendTo(it->number());
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return;
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case Action::toggleOmnipresent:
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if (window->desktop() == 0xffffffff)
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window->sendTo(_active_desktop);
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else
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window->sendTo(0xffffffff);
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return;
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case Action::moveWindowUp:
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window->move(window->x(), window->y() -
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(it->number() != 0 ? it->number(): 1));
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return;
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case Action::moveWindowDown:
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window->move(window->x(), window->y() +
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(it->number() != 0 ? it->number(): 1));
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return;
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case Action::moveWindowLeft:
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window->move(window->x() - (it->number() != 0 ? it->number(): 1),
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window->y());
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return;
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case Action::moveWindowRight:
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window->move(window->x() + (it->number() != 0 ? it->number(): 1),
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window->y());
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return;
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case Action::resizeWindowWidth:
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window->resizeRel(it->number(), 0);
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return;
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case Action::resizeWindowHeight:
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window->resizeRel(0, it->number());
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return;
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case Action::toggleShade:
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window->shade(! window->shaded());
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return;
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case Action::toggleMaximizeHorizontal:
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window->toggleMaximize(XWindow::Max_Horz);
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return;
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case Action::toggleMaximizeVertical:
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window->toggleMaximize(XWindow::Max_Vert);
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return;
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case Action::toggleMaximizeFull:
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window->toggleMaximize(XWindow::Max_Full);
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return;
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case Action::toggleDecorations:
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window->decorate(! window->decorated());
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return;
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default:
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assert(false); // unhandled action type!
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break;
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}
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}
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}
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void screen::handleKeyrelease(const XEvent &) {
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// the only keyrelease event we care about (for now) is when we do stacked
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// cycling and the modifier is released
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if (_stacked_cycling && _cycling && nothingIsPressed()) {
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// all modifiers have been released. ungrab the keyboard, move the
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// focused window to the top of the Z-order and raise it
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ungrabModifiers();
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if (_active != _clients.end()) {
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XWindow *w = *_active;
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bool e = _last_active == _active;
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_clients.remove(w);
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_clients.push_front(w);
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_active = _clients.begin();
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if (e) _last_active = _active;
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w->raise();
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}
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_cycling = false;
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}
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}
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// do we want to add this window to our list?
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bool screen::doAddWindow(Window window) const {
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assert(_managed);
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Atom type;
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if (! _xatom->getValue(window, XAtom::net_wm_window_type, XAtom::atom,
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type))
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return True;
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if (type == _xatom->getAtom(XAtom::net_wm_window_type_dock) ||
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type == _xatom->getAtom(XAtom::net_wm_window_type_menu))
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return False;
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return True;
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}
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void screen::updateEverything() {
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updateNumDesktops();
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updateActiveDesktop();
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updateClientList();
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updateActiveWindow();
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}
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void screen::updateNumDesktops() {
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assert(_managed);
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if (! _xatom->getValue(_root, XAtom::net_number_of_desktops, XAtom::cardinal,
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(unsigned long)_num_desktops))
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_num_desktops = 1; // assume that there is at least 1 desktop!
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}
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void screen::updateActiveDesktop() {
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assert(_managed);
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if (! _xatom->getValue(_root, XAtom::net_current_desktop, XAtom::cardinal,
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(unsigned long)_active_desktop))
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_active_desktop = 0; // there must be at least one desktop, and it must
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// be the current one
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}
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void screen::updateClientList() {
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assert(_managed);
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WindowList::iterator insert_point = _active;
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if (insert_point != _clients.end())
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++insert_point; // get to the item client the focused client
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// get the client list from the root window
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Window *rootclients = 0;
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unsigned long num = (unsigned) -1;
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if (! _xatom->getValue(_root, XAtom::net_client_list, XAtom::window, num,
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&rootclients))
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num = 0;
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WindowList::iterator it;
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const WindowList::iterator end = _clients.end();
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unsigned long i;
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for (i = 0; i < num; ++i) {
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for (it = _clients.begin(); it != end; ++it)
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if (**it == rootclients[i])
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break;
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if (it == end) { // didn't already exist
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if (doAddWindow(rootclients[i])) {
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// cout << "Added window: 0x" << hex << rootclients[i] << dec << endl;
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// insert new clients after the active window
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_clients.insert(insert_point, new XWindow(_epist, this,
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rootclients[i]));
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}
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}
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}
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// remove clients that no longer exist (that belong to this screen)
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for (it = _clients.begin(); it != end;) {
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WindowList::iterator it2 = it;
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++it;
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// is on another screen?
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if ((*it2)->getScreen() != this)
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continue;
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for (i = 0; i < num; ++i)
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if (**it2 == rootclients[i])
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break;
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if (i == num) { // no longer exists
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// cout << "Removed window: 0x" << hex << (*it2)->window() << dec << endl;
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// watch for the active and last-active window
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if (it2 == _active)
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_active = _clients.end();
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if (it2 == _last_active)
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_last_active = _clients.end();
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delete *it2;
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_clients.erase(it2);
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}
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}
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if (rootclients) delete [] rootclients;
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}
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const XWindow *screen::lastActiveWindow() const {
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if (_last_active != _clients.end())
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return *_last_active;
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// find a window if one exists
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WindowList::const_iterator it, end = _clients.end();
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for (it = _clients.begin(); it != end; ++it)
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if ((*it)->getScreen() == this && ! (*it)->iconic() &&
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(*it)->canFocus() &&
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((*it)->desktop() == 0xffffffff ||
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(*it)->desktop() == _active_desktop))
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return *it;
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// no windows on this screen
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return 0;
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}
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void screen::updateActiveWindow() {
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assert(_managed);
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Window a = None;
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_xatom->getValue(_root, XAtom::net_active_window, XAtom::window, a);
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WindowList::iterator it, end = _clients.end();
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for (it = _clients.begin(); it != end; ++it) {
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if (**it == a) {
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if ((*it)->getScreen() != this)
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return;
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break;
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}
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}
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_active = it;
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if (_active != end) {
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/* if we're not cycling and a window gets focus, add it to the top of the
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* cycle stack.
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*/
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if (_stacked_cycling && !_cycling) {
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XWindow *win = *_active;
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_clients.remove(win);
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_clients.push_front(win);
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_active = _clients.begin();
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_last_active = _active;
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}
|
|
}
|
|
|
|
/* cout << "Active window is now: ";
|
|
if (_active == _clients.end()) cout << "None\n";
|
|
else cout << "0x" << hex << (*_active)->window() << dec << endl;
|
|
*/
|
|
}
|
|
|
|
|
|
void screen::execCommand(const string &cmd) const {
|
|
pid_t pid;
|
|
if ((pid = fork()) == 0) {
|
|
// make the command run on the correct screen
|
|
if (putenv(const_cast<char*>(_info->displayString().c_str()))) {
|
|
cout << "warning: couldn't set environment variable 'DISPLAY'\n";
|
|
perror("putenv()");
|
|
}
|
|
execl("/bin/sh", "sh", "-c", cmd.c_str(), NULL);
|
|
exit(-1);
|
|
} else if (pid == -1) {
|
|
cout << _epist->getApplicationName() <<
|
|
": Could not fork a process for executing a command\n";
|
|
}
|
|
}
|
|
|
|
|
|
void screen::cycleWindow(unsigned int state, const bool forward,
|
|
const int increment, const bool allscreens,
|
|
const bool alldesktops, const bool sameclass,
|
|
const string &cn)
|
|
{
|
|
assert(_managed);
|
|
assert(increment > 0);
|
|
|
|
if (_clients.empty()) return;
|
|
|
|
string classname(cn);
|
|
if (sameclass && classname.empty() && _active != _clients.end())
|
|
classname = (*_active)->appClass();
|
|
|
|
WindowList::const_iterator target = _active,
|
|
begin = _clients.begin(),
|
|
end = _clients.end();
|
|
|
|
XWindow *t = 0;
|
|
|
|
for (int x = 0; x < increment; ++x) {
|
|
while (1) {
|
|
if (forward) {
|
|
if (target == end) {
|
|
target = begin;
|
|
} else {
|
|
++target;
|
|
}
|
|
} else {
|
|
if (target == begin)
|
|
target = end;
|
|
--target;
|
|
}
|
|
|
|
// must be no window to focus
|
|
if (target == _active)
|
|
return;
|
|
|
|
// start back at the beginning of the loop
|
|
if (target == end)
|
|
continue;
|
|
|
|
// determine if this window is invalid for cycling to
|
|
t = *target;
|
|
if (t->iconic()) continue;
|
|
if (! allscreens && t->getScreen() != this) continue;
|
|
if (! alldesktops && ! (t->desktop() == _active_desktop ||
|
|
t->desktop() == 0xffffffff)) continue;
|
|
if (sameclass && ! classname.empty() &&
|
|
t->appClass() != classname) continue;
|
|
if (! t->canFocus()) continue;
|
|
|
|
// found a good window so break out of the while, and perhaps continue
|
|
// with the for loop
|
|
break;
|
|
}
|
|
}
|
|
|
|
// phew. we found the window, so focus it.
|
|
if (_stacked_cycling && state) {
|
|
if (!_cycling) {
|
|
// grab modifiers so we can intercept KeyReleases from them
|
|
grabModifiers();
|
|
_cycling = true;
|
|
}
|
|
|
|
// if the window is on another desktop, we can't use XSetInputFocus, since
|
|
// it doesn't imply a workspace change.
|
|
if (t->desktop() == _active_desktop || t->desktop() == 0xffffffff)
|
|
t->focus(false); // focus, but don't raise
|
|
else
|
|
t->focus(); // change workspace and focus
|
|
}
|
|
else {
|
|
t->focus();
|
|
}
|
|
}
|
|
|
|
|
|
void screen::cycleWorkspace(const bool forward, const int increment,
|
|
const bool loop) const {
|
|
assert(_managed);
|
|
assert(increment > 0);
|
|
|
|
unsigned int destination = _active_desktop;
|
|
|
|
for (int x = 0; x < increment; ++x) {
|
|
if (forward) {
|
|
if (destination < _num_desktops - 1)
|
|
++destination;
|
|
else if (loop)
|
|
destination = 0;
|
|
} else {
|
|
if (destination > 0)
|
|
--destination;
|
|
else if (loop)
|
|
destination = _num_desktops - 1;
|
|
}
|
|
}
|
|
|
|
if (destination != _active_desktop)
|
|
changeWorkspace(destination);
|
|
}
|
|
|
|
|
|
void screen::changeWorkspace(const int num) const {
|
|
assert(_managed);
|
|
|
|
_xatom->sendClientMessage(_root, XAtom::net_current_desktop, _root, num);
|
|
}
|
|
|
|
void screen::changeWorkspaceVert(const int num) const {
|
|
assert(_managed);
|
|
int width = 0;
|
|
int num_desktops = (signed)_num_desktops;
|
|
int active_desktop = (signed)_active_desktop;
|
|
int wnum = 0;
|
|
|
|
_config->getValue(Config::workspaceColumns, width);
|
|
|
|
if (width > num_desktops || width <= 0)
|
|
return;
|
|
|
|
// a cookie to the person that makes this pretty
|
|
if (num < 0) {
|
|
wnum = active_desktop - width;
|
|
if (wnum < 0) {
|
|
wnum = num_desktops/width * width + active_desktop;
|
|
if (wnum >= num_desktops)
|
|
wnum = num_desktops - 1;
|
|
}
|
|
}
|
|
else {
|
|
wnum = active_desktop + width;
|
|
if (wnum >= num_desktops) {
|
|
wnum = (active_desktop + width) % num_desktops - 1;
|
|
if (wnum < 0)
|
|
wnum = 0;
|
|
}
|
|
}
|
|
changeWorkspace(wnum);
|
|
}
|
|
|
|
void screen::changeWorkspaceHorz(const int num) const {
|
|
assert(_managed);
|
|
int width = 0;
|
|
int num_desktops = (signed)_num_desktops;
|
|
int active_desktop = (signed)_active_desktop;
|
|
int wnum = 0;
|
|
|
|
_config->getValue(Config::workspaceColumns, width);
|
|
|
|
if (width > num_desktops || width <= 0)
|
|
return;
|
|
|
|
if (num < 0) {
|
|
if (active_desktop % width != 0)
|
|
changeWorkspace(active_desktop - 1);
|
|
else {
|
|
wnum = active_desktop + width - 1;
|
|
if (wnum >= num_desktops)
|
|
wnum = num_desktops - 1;
|
|
}
|
|
}
|
|
else {
|
|
if (active_desktop % width != width - 1) {
|
|
wnum = active_desktop + 1;
|
|
if (wnum >= num_desktops)
|
|
wnum = num_desktops / width * width;
|
|
}
|
|
else
|
|
wnum = active_desktop - width + 1;
|
|
}
|
|
changeWorkspace(wnum);
|
|
}
|
|
|
|
void screen::grabKey(const KeyCode keyCode, const int modifierMask) const {
|
|
|
|
Display *display = _epist->getXDisplay();
|
|
int numlockMask, scrolllockMask;
|
|
|
|
_epist->getLockModifiers(numlockMask, scrolllockMask);
|
|
|
|
XGrabKey(display, keyCode, modifierMask,
|
|
_root, True, GrabModeAsync, GrabModeAsync);
|
|
XGrabKey(display, keyCode,
|
|
modifierMask|LockMask,
|
|
_root, True, GrabModeAsync, GrabModeAsync);
|
|
XGrabKey(display, keyCode,
|
|
modifierMask|scrolllockMask,
|
|
_root, True, GrabModeAsync, GrabModeAsync);
|
|
XGrabKey(display, keyCode,
|
|
modifierMask|numlockMask,
|
|
_root, True, GrabModeAsync, GrabModeAsync);
|
|
|
|
XGrabKey(display, keyCode,
|
|
modifierMask|LockMask|scrolllockMask,
|
|
_root, True, GrabModeAsync, GrabModeAsync);
|
|
XGrabKey(display, keyCode,
|
|
modifierMask|scrolllockMask|numlockMask,
|
|
_root, True, GrabModeAsync, GrabModeAsync);
|
|
XGrabKey(display, keyCode,
|
|
modifierMask|numlockMask|LockMask,
|
|
_root, True, GrabModeAsync, GrabModeAsync);
|
|
|
|
XGrabKey(display, keyCode,
|
|
modifierMask|numlockMask|LockMask|scrolllockMask,
|
|
_root, True, GrabModeAsync, GrabModeAsync);
|
|
}
|
|
|
|
void screen::ungrabKey(const KeyCode keyCode, const int modifierMask) const {
|
|
|
|
Display *display = _epist->getXDisplay();
|
|
int numlockMask, scrolllockMask;
|
|
|
|
_epist->getLockModifiers(numlockMask, scrolllockMask);
|
|
|
|
XUngrabKey(display, keyCode, modifierMask, _root);
|
|
XUngrabKey(display, keyCode, modifierMask|LockMask, _root);
|
|
XUngrabKey(display, keyCode, modifierMask|scrolllockMask, _root);
|
|
XUngrabKey(display, keyCode, modifierMask|numlockMask, _root);
|
|
XUngrabKey(display, keyCode, modifierMask|LockMask|scrolllockMask, _root);
|
|
XUngrabKey(display, keyCode, modifierMask|scrolllockMask|numlockMask, _root);
|
|
XUngrabKey(display, keyCode, modifierMask|numlockMask|LockMask, _root);
|
|
XUngrabKey(display, keyCode, modifierMask|numlockMask|LockMask|
|
|
scrolllockMask, _root);
|
|
}
|
|
|
|
|
|
void screen::grabModifiers() const {
|
|
Display *display = _epist->getXDisplay();
|
|
|
|
XGrabKeyboard(display, rootWindow(), True, GrabModeAsync,
|
|
GrabModeAsync, CurrentTime);
|
|
}
|
|
|
|
|
|
void screen::ungrabModifiers() const {
|
|
Display *display = _epist->getXDisplay();
|
|
|
|
XUngrabKeyboard(display, CurrentTime);
|
|
}
|
|
|
|
|
|
bool screen::nothingIsPressed(void) const
|
|
{
|
|
char keys[32];
|
|
XQueryKeymap(_epist->getXDisplay(), keys);
|
|
|
|
for (int i = 0; i < 32; ++i) {
|
|
if (keys[i] != 0)
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|