2014-08-12 11:08:48 +04:00
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/********************************************************************
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KWin - the KDE window manager
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This file is part of the KDE project.
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Copyright (C) 1999, 2000 Matthias Ettrich <ettrich@kde.org>
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Copyright (C) 2003 Lubos Lunak <l.lunak@kde.org>
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Copyright (C) 2014 Martin Gräßlin <mgraesslin@kde.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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#include "main_x11.h"
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#include <config-kwin.h>
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// kwin
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2016-04-08 11:11:27 +03:00
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#include "platform.h"
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2014-08-12 11:08:48 +04:00
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#include "sm.h"
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2016-02-17 11:26:38 +03:00
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#include "workspace.h"
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2014-08-12 11:08:48 +04:00
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#include "xcbutils.h"
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// KDE
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#include <KLocalizedString>
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2016-04-08 11:11:27 +03:00
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#include <KPluginLoader>
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#include <KPluginMetaData>
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2014-08-12 11:08:48 +04:00
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// Qt
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#include <qplatformdefs.h>
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#include <QCommandLineParser>
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// system
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif // HAVE_UNISTD_H
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2016-04-08 11:11:27 +03:00
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#include <iostream>
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2014-08-12 11:08:48 +04:00
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namespace KWin
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{
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static void sighandler(int)
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{
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QApplication::exit();
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}
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//************************************
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// KWinSelectionOwner
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//************************************
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KWinSelectionOwner::KWinSelectionOwner(int screen_P)
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: KSelectionOwner(make_selection_atom(screen_P), screen_P)
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{
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}
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xcb_atom_t KWinSelectionOwner::make_selection_atom(int screen_P)
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{
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if (screen_P < 0)
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screen_P = QX11Info::appScreen();
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QByteArray screen(QByteArrayLiteral("WM_S"));
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screen.append(QByteArray::number(screen_P));
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ScopedCPointer<xcb_intern_atom_reply_t> atom(xcb_intern_atom_reply(
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connection(),
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xcb_intern_atom_unchecked(connection(), false, screen.length(), screen.constData()),
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nullptr));
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if (atom.isNull()) {
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return XCB_ATOM_NONE;
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}
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return atom->atom;
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}
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void KWinSelectionOwner::getAtoms()
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{
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KSelectionOwner::getAtoms();
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if (xa_version == XCB_ATOM_NONE) {
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const QByteArray name(QByteArrayLiteral("VERSION"));
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ScopedCPointer<xcb_intern_atom_reply_t> atom(xcb_intern_atom_reply(
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connection(),
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xcb_intern_atom_unchecked(connection(), false, name.length(), name.constData()),
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nullptr));
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if (!atom.isNull()) {
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xa_version = atom->atom;
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}
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}
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}
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void KWinSelectionOwner::replyTargets(xcb_atom_t property_P, xcb_window_t requestor_P)
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{
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KSelectionOwner::replyTargets(property_P, requestor_P);
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xcb_atom_t atoms[ 1 ] = { xa_version };
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// PropModeAppend !
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xcb_change_property(connection(), XCB_PROP_MODE_APPEND, requestor_P,
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property_P, XCB_ATOM_ATOM, 32, 1, atoms);
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}
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bool KWinSelectionOwner::genericReply(xcb_atom_t target_P, xcb_atom_t property_P, xcb_window_t requestor_P)
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{
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if (target_P == xa_version) {
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int32_t version[] = { 2, 0 };
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xcb_change_property(connection(), XCB_PROP_MODE_REPLACE, requestor_P,
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property_P, XCB_ATOM_INTEGER, 32, 2, version);
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} else
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return KSelectionOwner::genericReply(target_P, property_P, requestor_P);
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return true;
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}
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xcb_atom_t KWinSelectionOwner::xa_version = XCB_ATOM_NONE;
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//************************************
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// ApplicationX11
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//************************************
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ApplicationX11::ApplicationX11(int &argc, char **argv)
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: Application(OperationModeX11, argc, argv)
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, owner()
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, m_replace(false)
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{
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2015-02-20 11:33:36 +03:00
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setX11Connection(QX11Info::connection());
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setX11RootWindow(QX11Info::appRootWindow());
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2014-08-12 11:08:48 +04:00
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}
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ApplicationX11::~ApplicationX11()
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{
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2015-11-10 10:52:40 +03:00
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destroyCompositor();
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2014-08-12 11:08:48 +04:00
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destroyWorkspace();
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if (!owner.isNull() && owner->ownerWindow() != XCB_WINDOW_NONE) // If there was no --replace (no new WM)
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Xcb::setInputFocus(XCB_INPUT_FOCUS_POINTER_ROOT);
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}
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void ApplicationX11::setReplace(bool replace)
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{
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m_replace = replace;
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}
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void ApplicationX11::lostSelection()
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{
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sendPostedEvents();
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2015-11-10 10:52:40 +03:00
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destroyCompositor();
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2014-08-12 11:08:48 +04:00
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destroyWorkspace();
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// Remove windowmanager privileges
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Xcb::selectInput(rootWindow(), XCB_EVENT_MASK_PROPERTY_CHANGE);
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quit();
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}
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void ApplicationX11::performStartup()
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{
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if (Application::x11ScreenNumber() == -1) {
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Application::setX11ScreenNumber(QX11Info::appScreen());
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}
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2015-05-01 17:55:15 +03:00
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// QSessionManager for some reason triggers a very early commitDataRequest
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// and updates the key - before we create the workspace and load the session
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// data -> store and pass to the workspace constructor
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m_originalSessionKey = sessionKey();
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2014-08-12 11:08:48 +04:00
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owner.reset(new KWinSelectionOwner(Application::x11ScreenNumber()));
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connect(owner.data(), &KSelectionOwner::failedToClaimOwnership, []{
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fputs(i18n("kwin: unable to claim manager selection, another wm running? (try using --replace)\n").toLocal8Bit().constData(), stderr);
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::exit(1);
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});
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connect(owner.data(), SIGNAL(lostOwnership()), SLOT(lostSelection()));
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connect(owner.data(), &KSelectionOwner::claimedOwnership, [this]{
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setupEventFilters();
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// first load options - done internally by a different thread
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createOptions();
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// Check whether another windowmanager is running
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const uint32_t maskValues[] = {XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT};
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ScopedCPointer<xcb_generic_error_t> redirectCheck(xcb_request_check(connection(),
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xcb_change_window_attributes_checked(connection(),
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rootWindow(),
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XCB_CW_EVENT_MASK,
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maskValues)));
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if (!redirectCheck.isNull()) {
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fputs(i18n("kwin: another window manager is running (try using --replace)\n").toLocal8Bit().constData(), stderr);
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2015-12-16 18:30:06 +03:00
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if (!wasCrash()) // if this is a crash-restart, DrKonqi may have stopped the process w/o killing the connection
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::exit(1);
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2014-08-12 11:08:48 +04:00
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}
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2015-02-20 16:53:03 +03:00
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createInput();
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2014-08-12 11:08:48 +04:00
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2016-04-08 11:11:27 +03:00
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connect(platform(), &Platform::screensQueried, this,
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[this] {
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createWorkspace();
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2014-08-12 11:08:48 +04:00
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2016-04-08 11:11:27 +03:00
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Xcb::sync(); // Trigger possible errors, there's still a chance to abort
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notifyKSplash();
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}
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);
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connect(platform(), &Platform::initFailed, this,
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[] () {
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std::cerr << "FATAL ERROR: backend failed to initialize, exiting now" << std::endl;
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::exit(1);
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}
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);
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platform()->init();
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2014-08-12 11:08:48 +04:00
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});
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// we need to do an XSync here, otherwise the QPA might crash us later on
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Xcb::sync();
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2015-12-16 18:30:06 +03:00
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owner->claim(m_replace || wasCrash(), true);
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2014-08-12 11:08:48 +04:00
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createAtoms();
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}
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2016-02-17 11:26:38 +03:00
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bool ApplicationX11::notify(QObject* o, QEvent* e)
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{
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if (Workspace::self()->workspaceEvent(e))
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return true;
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return QApplication::notify(o, e);
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}
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2014-08-12 11:08:48 +04:00
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} // namespace
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extern "C"
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KWIN_EXPORT int kdemain(int argc, char * argv[])
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{
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KWin::Application::setupMalloc();
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KWin::Application::setupLocalizedString();
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int primaryScreen = 0;
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xcb_connection_t *c = xcb_connect(nullptr, &primaryScreen);
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if (!c || xcb_connection_has_error(c)) {
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fprintf(stderr, "%s: FATAL ERROR while trying to open display %s\n",
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argv[0], qgetenv("DISPLAY").constData());
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exit(1);
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}
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const int number_of_screens = xcb_setup_roots_length(xcb_get_setup(c));
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2015-01-23 11:54:03 +03:00
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xcb_disconnect(c);
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c = nullptr;
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2014-08-12 11:08:48 +04:00
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// multi head
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auto isMultiHead = []() -> bool {
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QByteArray multiHead = qgetenv("KDE_MULTIHEAD");
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if (!multiHead.isEmpty()) {
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return (multiHead.toLower() == "true");
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}
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return true;
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};
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if (number_of_screens != 1 && isMultiHead()) {
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KWin::Application::setX11MultiHead(true);
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KWin::Application::setX11ScreenNumber(primaryScreen);
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int pos; // Temporarily needed to reconstruct DISPLAY var if multi-head
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QByteArray display_name = qgetenv("DISPLAY");
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if ((pos = display_name.lastIndexOf('.')) != -1)
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display_name.remove(pos, 10); // 10 is enough to be sure we removed ".s"
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QString envir;
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for (int i = 0; i < number_of_screens; i++) {
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// If execution doesn't pass by here, then kwin
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// acts exactly as previously
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if (i != KWin::Application::x11ScreenNumber() && fork() == 0) {
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KWin::Application::setX11ScreenNumber(i);
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2015-01-23 11:48:55 +03:00
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QByteArray dBusSuffix = qgetenv("KWIN_DBUS_SERVICE_SUFFIX");
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if (!dBusSuffix.isNull()) {
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dBusSuffix.append(".");
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}
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dBusSuffix.append(QByteArrayLiteral("head-")).append(QByteArray::number(i));
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qputenv("KWIN_DBUS_SERVICE_SUFFIX", dBusSuffix);
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2014-08-12 11:08:48 +04:00
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// Break here because we are the child process, we don't
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// want to fork() anymore
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break;
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}
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}
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// In the next statement, display_name shouldn't contain a screen
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// number. If it had it, it was removed at the "pos" check
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envir.sprintf("DISPLAY=%s.%d", display_name.data(), KWin::Application::x11ScreenNumber());
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if (putenv(strdup(envir.toAscii().constData()))) {
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fprintf(stderr, "%s: WARNING: unable to set DISPLAY environment variable\n", argv[0]);
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perror("putenv()");
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}
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}
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if (signal(SIGTERM, KWin::sighandler) == SIG_IGN)
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signal(SIGTERM, SIG_IGN);
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if (signal(SIGINT, KWin::sighandler) == SIG_IGN)
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signal(SIGINT, SIG_IGN);
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if (signal(SIGHUP, KWin::sighandler) == SIG_IGN)
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signal(SIGHUP, SIG_IGN);
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// Disable the glib event loop integration, since it seems to be responsible
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// for several bug reports about high CPU usage (bug #239963)
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setenv("QT_NO_GLIB", "1", true);
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// enforce xcb plugin, unfortunately command line switch has precedence
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setenv("QT_QPA_PLATFORM", "xcb", true);
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2015-04-17 19:13:39 +03:00
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qunsetenv("QT_DEVICE_PIXEL_RATIO");
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2016-01-26 20:01:40 +03:00
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#if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0))
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QCoreApplication::setAttribute(Qt::AA_DisableHighDpiScaling);
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#endif
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2015-04-17 19:13:39 +03:00
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2014-08-12 11:08:48 +04:00
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KWin::ApplicationX11 a(argc, argv);
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a.setupTranslator();
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KWin::Application::createAboutData();
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QCommandLineOption replaceOption(QStringLiteral("replace"), i18n("Replace already-running ICCCM2.0-compliant window manager"));
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QCommandLineParser parser;
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a.setupCommandLine(&parser);
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parser.addOption(replaceOption);
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2015-11-24 11:01:46 +03:00
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#ifdef KWIN_BUILD_ACTIVITIES
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QCommandLineOption noActivitiesOption(QStringLiteral("no-kactivities"),
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i18n("Disable KActivities integration."));
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parser.addOption(noActivitiesOption);
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#endif
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2014-08-12 11:08:48 +04:00
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parser.process(a);
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a.processCommandLine(&parser);
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a.setReplace(parser.isSet(replaceOption));
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2015-11-24 11:01:46 +03:00
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#ifdef KWIN_BUILD_ACTIVITIES
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if (parser.isSet(noActivitiesOption)) {
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a.setUseKActivities(false);
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}
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#endif
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2014-08-12 11:08:48 +04:00
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// perform sanity checks
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if (a.platformName().toLower() != QStringLiteral("xcb")) {
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fprintf(stderr, "%s: FATAL ERROR expecting platform xcb but got platform %s\n",
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argv[0], qPrintable(a.platformName()));
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exit(1);
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}
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if (!KWin::display()) {
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fprintf(stderr, "%s: FATAL ERROR KWin requires Xlib support in the xcb plugin. Do not configure Qt with -no-xcb-xlib\n",
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argv[0]);
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|
exit(1);
|
|
|
|
}
|
|
|
|
|
2016-04-08 11:11:27 +03:00
|
|
|
// find and load the X11 platform plugin
|
|
|
|
const auto plugins = KPluginLoader::findPluginsById(QStringLiteral("org.kde.kwin.platforms"),
|
|
|
|
QStringLiteral("KWinX11Platform"));
|
|
|
|
if (plugins.isEmpty()) {
|
|
|
|
std::cerr << "FATAL ERROR: KWin could not find the KWinX11Platform plugin" << std::endl;
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
a.initPlatform(plugins.first());
|
|
|
|
if (!a.platform()) {
|
|
|
|
std::cerr << "FATAL ERROR: could not instantiate the platform plugin" << std::endl;
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2014-08-12 11:08:48 +04:00
|
|
|
a.start();
|
|
|
|
|
|
|
|
KWin::SessionSaveDoneHelper helper;
|
2015-06-12 04:11:14 +03:00
|
|
|
Q_UNUSED(helper); // The sessionsavedonehelper opens a side channel to the smserver,
|
|
|
|
// listens for events and talks to it, so it needs to be created.
|
2014-08-12 11:08:48 +04:00
|
|
|
return a.exec();
|
|
|
|
}
|