You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
559 lines
19 KiB
559 lines
19 KiB
/******************************************************************** |
|
KWin - the KDE window manager |
|
This file is part of the KDE project. |
|
|
|
Copyright (C) 1999, 2000 Matthias Ettrich <ettrich@kde.org> |
|
Copyright (C) 2003 Lubos Lunak <l.lunak@kde.org> |
|
|
|
This program is free software; you can redistribute it and/or modify |
|
it under the terms of the GNU General Public License as published by |
|
the Free Software Foundation; either version 2 of the License, or |
|
(at your option) any later version. |
|
|
|
This program is distributed in the hope that it will be useful, |
|
but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
GNU General Public License for more details. |
|
|
|
You should have received a copy of the GNU General Public License |
|
along with this program. If not, see <http://www.gnu.org/licenses/>. |
|
*********************************************************************/ |
|
|
|
#include "main.h" |
|
#include <config-kwin.h> |
|
// kwin |
|
#include "atoms.h" |
|
#include "options.h" |
|
#include "sm.h" |
|
#include "workspace.h" |
|
#include "xcbutils.h" |
|
|
|
// KDE |
|
#include <KAboutData> |
|
#include <KConfig> |
|
#include <KConfigGroup> |
|
#include <KCrash> |
|
#include <KLocalizedString> |
|
#include <KSharedConfig> |
|
// Qt |
|
#include <qplatformdefs.h> |
|
#include <QDebug> |
|
#include <QComboBox> |
|
#include <qcommandlineparser.h> |
|
#include <QDialog> |
|
#include <QDialogButtonBox> |
|
#include <QLabel> |
|
#include <QPushButton> |
|
#include <QQuickWindow> |
|
#include <QStandardPaths> |
|
#include <QVBoxLayout> |
|
#include <QtDBus/QtDBus> |
|
#include <QX11Info> |
|
// TODO: remove once QX11Info provides the X screen |
|
#include <X11/Xlib.h> |
|
|
|
// system |
|
#ifdef HAVE_UNISTD_H |
|
#include <unistd.h> |
|
#endif // HAVE_UNISTD_H |
|
|
|
#ifdef HAVE_MALLOC_H |
|
#include <malloc.h> |
|
#endif // HAVE_MALLOC_H |
|
|
|
namespace KWin |
|
{ |
|
|
|
Options* options; |
|
|
|
Atoms* atoms; |
|
|
|
int screen_number = -1; |
|
bool is_multihead = false; |
|
|
|
//************************************ |
|
// KWinSelectionOwner |
|
//************************************ |
|
|
|
KWinSelectionOwner::KWinSelectionOwner(int screen_P) |
|
: KSelectionOwner(make_selection_atom(screen_P), screen_P) |
|
{ |
|
} |
|
|
|
xcb_atom_t KWinSelectionOwner::make_selection_atom(int screen_P) |
|
{ |
|
if (screen_P < 0) |
|
screen_P = DefaultScreen(display()); |
|
QByteArray screen(QByteArrayLiteral("WM_S")); |
|
screen.append(QByteArray::number(screen_P)); |
|
ScopedCPointer<xcb_intern_atom_reply_t> atom(xcb_intern_atom_reply( |
|
connection(), |
|
xcb_intern_atom_unchecked(connection(), false, screen.length(), screen.constData()), |
|
nullptr)); |
|
if (atom.isNull()) { |
|
return XCB_ATOM_NONE; |
|
} |
|
return atom->atom; |
|
} |
|
|
|
void KWinSelectionOwner::getAtoms() |
|
{ |
|
KSelectionOwner::getAtoms(); |
|
if (xa_version == XCB_ATOM_NONE) { |
|
const QByteArray name(QByteArrayLiteral("VERSION")); |
|
ScopedCPointer<xcb_intern_atom_reply_t> atom(xcb_intern_atom_reply( |
|
connection(), |
|
xcb_intern_atom_unchecked(connection(), false, name.length(), name.constData()), |
|
nullptr)); |
|
if (!atom.isNull()) { |
|
xa_version = atom->atom; |
|
} |
|
} |
|
} |
|
|
|
void KWinSelectionOwner::replyTargets(xcb_atom_t property_P, xcb_window_t requestor_P) |
|
{ |
|
KSelectionOwner::replyTargets(property_P, requestor_P); |
|
xcb_atom_t atoms[ 1 ] = { xa_version }; |
|
// PropModeAppend ! |
|
xcb_change_property(connection(), XCB_PROP_MODE_APPEND, requestor_P, |
|
property_P, XCB_ATOM_ATOM, 32, 1, atoms); |
|
} |
|
|
|
bool KWinSelectionOwner::genericReply(xcb_atom_t target_P, xcb_atom_t property_P, xcb_window_t requestor_P) |
|
{ |
|
if (target_P == xa_version) { |
|
int32_t version[] = { 2, 0 }; |
|
xcb_change_property(connection(), XCB_PROP_MODE_REPLACE, requestor_P, |
|
property_P, XCB_ATOM_INTEGER, 32, 2, version); |
|
} else |
|
return KSelectionOwner::genericReply(target_P, property_P, requestor_P); |
|
return true; |
|
} |
|
|
|
xcb_atom_t KWinSelectionOwner::xa_version = XCB_ATOM_NONE; |
|
|
|
class AlternativeWMDialog : public QDialog |
|
{ |
|
public: |
|
AlternativeWMDialog() |
|
: QDialog() { |
|
QWidget* mainWidget = new QWidget(this); |
|
QVBoxLayout* layout = new QVBoxLayout(mainWidget); |
|
QString text = i18n( |
|
"KWin is unstable.\n" |
|
"It seems to have crashed several times in a row.\n" |
|
"You can select another window manager to run:"); |
|
QLabel* textLabel = new QLabel(text, mainWidget); |
|
layout->addWidget(textLabel); |
|
wmList = new QComboBox(mainWidget); |
|
wmList->setEditable(true); |
|
layout->addWidget(wmList); |
|
|
|
addWM(QStringLiteral("metacity")); |
|
addWM(QStringLiteral("openbox")); |
|
addWM(QStringLiteral("fvwm2")); |
|
addWM(QStringLiteral(KWIN_NAME)); |
|
|
|
QVBoxLayout *mainLayout = new QVBoxLayout(this); |
|
mainLayout->addWidget(mainWidget); |
|
QDialogButtonBox *buttons = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel, this); |
|
buttons->button(QDialogButtonBox::Ok)->setDefault(true); |
|
connect(buttons, &QDialogButtonBox::accepted, this, &QDialog::accept); |
|
connect(buttons, &QDialogButtonBox::rejected, this, &QDialog::reject); |
|
mainLayout->addWidget(buttons); |
|
|
|
raise(); |
|
} |
|
|
|
void addWM(const QString& wm) { |
|
// TODO: Check if WM is installed |
|
if (!QStandardPaths::findExecutable(wm).isEmpty()) |
|
wmList->addItem(wm); |
|
} |
|
QString selectedWM() const { |
|
return wmList->currentText(); |
|
} |
|
|
|
private: |
|
QComboBox* wmList; |
|
}; |
|
|
|
int Application::crashes = 0; |
|
|
|
Application::Application(int &argc, char **argv) |
|
: QApplication(argc, argv) |
|
, owner() |
|
, m_eventFilter(new XcbEventFilter()) |
|
, m_replace(false) |
|
, m_configLock(false) |
|
, m_operationMode(OperationModeX11) |
|
{ |
|
} |
|
|
|
void Application::setConfigLock(bool lock) |
|
{ |
|
m_configLock = lock; |
|
} |
|
|
|
void Application::setReplace(bool replace) |
|
{ |
|
m_replace = replace; |
|
} |
|
|
|
Application::OperationMode Application::operationMode() const |
|
{ |
|
return m_operationMode; |
|
} |
|
|
|
void Application::setOperationMode(OperationMode mode) |
|
{ |
|
m_operationMode = mode; |
|
} |
|
|
|
bool Application::shouldUseWaylandForCompositing() const |
|
{ |
|
return m_operationMode == OperationModeWaylandAndX11; |
|
} |
|
|
|
bool Application::requiresCompositing() const |
|
{ |
|
return shouldUseWaylandForCompositing(); |
|
} |
|
|
|
void Application::start() |
|
{ |
|
setQuitOnLastWindowClosed(false); |
|
|
|
KSharedConfig::Ptr config = KSharedConfig::openConfig(); |
|
if (!config->isImmutable() && m_configLock) { |
|
// TODO: This shouldn't be necessary |
|
//config->setReadOnly( true ); |
|
config->reparseConfiguration(); |
|
} |
|
|
|
if (screen_number == -1) |
|
screen_number = QX11Info::appScreen(); |
|
|
|
owner.reset(new KWinSelectionOwner(screen_number)); |
|
connect(owner.data(), &KSelectionOwner::failedToClaimOwnership, []{ |
|
fputs(i18n("kwin: unable to claim manager selection, another wm running? (try using --replace)\n").toLocal8Bit().constData(), stderr); |
|
::exit(1); |
|
}); |
|
connect(owner.data(), SIGNAL(lostOwnership()), SLOT(lostSelection())); |
|
connect(owner.data(), &KSelectionOwner::claimedOwnership, [this]{ |
|
// we want all QQuickWindows with an alpha buffer |
|
QQuickWindow::setDefaultAlphaBuffer(true); |
|
|
|
installNativeEventFilter(m_eventFilter.data()); |
|
// first load options - done internally by a different thread |
|
options = new Options; |
|
|
|
// Check whether another windowmanager is running |
|
const uint32_t maskValues[] = {XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT}; |
|
ScopedCPointer<xcb_generic_error_t> redirectCheck(xcb_request_check(connection(), |
|
xcb_change_window_attributes_checked(connection(), |
|
rootWindow(), |
|
XCB_CW_EVENT_MASK, |
|
maskValues))); |
|
if (!redirectCheck.isNull()) { |
|
fputs(i18n("kwin: another window manager is running (try using --replace)\n").toLocal8Bit().constData(), stderr); |
|
::exit(1); |
|
} |
|
|
|
atoms->retrieveHelpers(); |
|
|
|
// This tries to detect compositing options and can use GLX. GLX problems |
|
// (X errors) shouldn't cause kwin to abort, so this is out of the |
|
// critical startup section where x errors cause kwin to abort. |
|
|
|
// create workspace. |
|
(void) new Workspace(isSessionRestored()); |
|
|
|
Xcb::sync(); // Trigger possible errors, there's still a chance to abort |
|
|
|
// Tell KSplash that KWin has started |
|
QDBusMessage ksplashProgressMessage = QDBusMessage::createMethodCall(QStringLiteral("org.kde.KSplash"), |
|
QStringLiteral("/KSplash"), |
|
QStringLiteral("org.kde.KSplash"), |
|
QStringLiteral("setStage")); |
|
ksplashProgressMessage.setArguments(QList<QVariant>() << QStringLiteral("wm")); |
|
QDBusConnection::sessionBus().asyncCall(ksplashProgressMessage); |
|
}); |
|
crashChecking(); |
|
// we need to do an XSync here, otherwise the QPA might crash us later on |
|
Xcb::sync(); |
|
owner->claim(m_replace, true); |
|
|
|
atoms = new Atoms; |
|
} |
|
|
|
Application::~Application() |
|
{ |
|
delete Workspace::self(); |
|
if (!owner.isNull() && owner->ownerWindow() != XCB_WINDOW_NONE) // If there was no --replace (no new WM) |
|
Xcb::setInputFocus(XCB_INPUT_FOCUS_POINTER_ROOT); |
|
delete options; |
|
delete atoms; |
|
} |
|
|
|
void Application::crashChecking() |
|
{ |
|
KCrash::setEmergencySaveFunction(Application::crashHandler); |
|
if (crashes >= 4) { |
|
// Something has gone seriously wrong |
|
AlternativeWMDialog dialog; |
|
QString cmd = QStringLiteral(KWIN_NAME); |
|
if (dialog.exec() == QDialog::Accepted) |
|
cmd = dialog.selectedWM(); |
|
else |
|
::exit(1); |
|
if (cmd.length() > 500) { |
|
qDebug() << "Command is too long, truncating"; |
|
cmd = cmd.left(500); |
|
} |
|
qDebug() << "Starting" << cmd << "and exiting"; |
|
char buf[1024]; |
|
sprintf(buf, "%s &", cmd.toAscii().data()); |
|
system(buf); |
|
::exit(1); |
|
} |
|
if (crashes >= 2) { |
|
// Disable compositing if we have had too many crashes |
|
qDebug() << "Too many crashes recently, disabling compositing"; |
|
KConfigGroup compgroup(KSharedConfig::openConfig(), "Compositing"); |
|
compgroup.writeEntry("Enabled", false); |
|
} |
|
// Reset crashes count if we stay up for more that 15 seconds |
|
QTimer::singleShot(15 * 1000, this, SLOT(resetCrashesCount())); |
|
} |
|
|
|
void Application::lostSelection() |
|
{ |
|
sendPostedEvents(); |
|
delete Workspace::self(); |
|
// Remove windowmanager privileges |
|
Xcb::selectInput(rootWindow(), XCB_EVENT_MASK_PROPERTY_CHANGE); |
|
quit(); |
|
} |
|
|
|
bool Application::notify(QObject* o, QEvent* e) |
|
{ |
|
if (Workspace::self()->workspaceEvent(e)) |
|
return true; |
|
return QApplication::notify(o, e); |
|
} |
|
|
|
static void sighandler(int) |
|
{ |
|
QApplication::exit(); |
|
} |
|
|
|
void Application::crashHandler(int signal) |
|
{ |
|
crashes++; |
|
|
|
fprintf(stderr, "Application::crashHandler() called with signal %d; recent crashes: %d\n", signal, crashes); |
|
char cmd[1024]; |
|
sprintf(cmd, "%s --crashes %d &", |
|
QFile::encodeName(QCoreApplication::applicationFilePath()).constData(), crashes); |
|
|
|
sleep(1); |
|
system(cmd); |
|
} |
|
|
|
void Application::resetCrashesCount() |
|
{ |
|
crashes = 0; |
|
} |
|
|
|
void Application::setCrashCount(int count) |
|
{ |
|
crashes = count; |
|
} |
|
|
|
bool Application::wasCrash() |
|
{ |
|
return crashes > 0; |
|
} |
|
|
|
bool XcbEventFilter::nativeEventFilter(const QByteArray &eventType, void *message, long int *result) |
|
{ |
|
Q_UNUSED(result) |
|
if (!Workspace::self()) { |
|
// Workspace not yet created |
|
return false; |
|
} |
|
if (eventType != "xcb_generic_event_t") { |
|
return false; |
|
} |
|
return Workspace::self()->workspaceEvent(static_cast<xcb_generic_event_t *>(message)); |
|
} |
|
|
|
} // namespace |
|
|
|
static const char version[] = KWIN_VERSION_STRING; |
|
static const char description[] = I18N_NOOP("KDE window manager"); |
|
|
|
extern "C" |
|
KWIN_EXPORT int kdemain(int argc, char * argv[]) |
|
{ |
|
#ifdef M_TRIM_THRESHOLD |
|
// Prevent fragmentation of the heap by malloc (glibc). |
|
// |
|
// The default threshold is 128*1024, which can result in a large memory usage |
|
// due to fragmentation especially if we use the raster graphicssystem. On the |
|
// otherside if the threshold is too low, free() starts to permanently ask the kernel |
|
// about shrinking the heap. |
|
#ifdef HAVE_UNISTD_H |
|
const int pagesize = sysconf(_SC_PAGESIZE); |
|
#else |
|
const int pagesize = 4*1024; |
|
#endif // HAVE_UNISTD_H |
|
mallopt(M_TRIM_THRESHOLD, 5*pagesize); |
|
#endif // M_TRIM_THRESHOLD |
|
|
|
QLoggingCategory::setFilterRules(QStringLiteral("aurorae.debug = true\n") + |
|
QStringLiteral("kwineffects.debug = true")); |
|
|
|
int primaryScreen = 0; |
|
xcb_connection_t *c = xcb_connect(nullptr, &primaryScreen); |
|
if (!c || xcb_connection_has_error(c)) { |
|
fprintf(stderr, "%s: FATAL ERROR while trying to open display %s\n", |
|
argv[0], qgetenv("DISPLAY").constData()); |
|
exit(1); |
|
} |
|
|
|
const int number_of_screens = xcb_setup_roots_length(xcb_get_setup(c)); |
|
|
|
// multi head |
|
auto isMultiHead = []() -> bool { |
|
QByteArray multiHead = qgetenv("KDE_MULTIHEAD"); |
|
if (!multiHead.isEmpty()) { |
|
return (multiHead.toLower() == "true"); |
|
} |
|
return true; |
|
}; |
|
if (number_of_screens != 1 && isMultiHead()) { |
|
KWin::is_multihead = true; |
|
KWin::screen_number = primaryScreen; |
|
int pos; // Temporarily needed to reconstruct DISPLAY var if multi-head |
|
QByteArray display_name = qgetenv("DISPLAY"); |
|
xcb_disconnect(c); |
|
c = nullptr; |
|
|
|
if ((pos = display_name.lastIndexOf('.')) != -1) |
|
display_name.remove(pos, 10); // 10 is enough to be sure we removed ".s" |
|
|
|
QString envir; |
|
for (int i = 0; i < number_of_screens; i++) { |
|
// If execution doesn't pass by here, then kwin |
|
// acts exactly as previously |
|
if (i != KWin::screen_number && fork() == 0) { |
|
KWin::screen_number = i; |
|
// Break here because we are the child process, we don't |
|
// want to fork() anymore |
|
break; |
|
} |
|
} |
|
// In the next statement, display_name shouldn't contain a screen |
|
// number. If it had it, it was removed at the "pos" check |
|
envir.sprintf("DISPLAY=%s.%d", display_name.data(), KWin::screen_number); |
|
|
|
if (putenv(strdup(envir.toAscii().constData()))) { |
|
fprintf(stderr, "%s: WARNING: unable to set DISPLAY environment variable\n", argv[0]); |
|
perror("putenv()"); |
|
} |
|
} |
|
|
|
if (signal(SIGTERM, KWin::sighandler) == SIG_IGN) |
|
signal(SIGTERM, SIG_IGN); |
|
if (signal(SIGINT, KWin::sighandler) == SIG_IGN) |
|
signal(SIGINT, SIG_IGN); |
|
if (signal(SIGHUP, KWin::sighandler) == SIG_IGN) |
|
signal(SIGHUP, SIG_IGN); |
|
|
|
// Disable the glib event loop integration, since it seems to be responsible |
|
// for several bug reports about high CPU usage (bug #239963) |
|
setenv("QT_NO_GLIB", "1", true); |
|
|
|
// enforce xcb plugin, unfortunately command line switch has precedence |
|
setenv("QT_QPA_PLATFORM", "xcb", true); |
|
|
|
KWin::Application a(argc, argv); |
|
|
|
a.setApplicationName(QStringLiteral(KWIN_NAME)); |
|
a.setApplicationVersion(QStringLiteral(KWIN_VERSION_STRING)); |
|
a.setApplicationDisplayName(i18n("KWin")); |
|
|
|
KAboutData aboutData(QStringLiteral(KWIN_NAME), // The program name used internally |
|
QString(), // The message catalog name. If null, program name is used instead |
|
i18n("KWin"), // A displayable program name string |
|
QStringLiteral(KWIN_VERSION_STRING), // The program version string |
|
i18n(description), // Short description of what the app does |
|
KAboutData::License_GPL, // The license this code is released under |
|
i18n("(c) 1999-2013, The KDE Developers")); // Copyright Statement |
|
|
|
aboutData.addAuthor(i18n("Matthias Ettrich"), QString(), QStringLiteral("ettrich@kde.org")); |
|
aboutData.addAuthor(i18n("Cristian Tibirna"), QString(), QStringLiteral("tibirna@kde.org")); |
|
aboutData.addAuthor(i18n("Daniel M. Duley"), QString(), QStringLiteral("mosfet@kde.org")); |
|
aboutData.addAuthor(i18n("Luboš Luňák"), QString(), QStringLiteral("l.lunak@kde.org")); |
|
aboutData.addAuthor(i18n("Martin Gräßlin"), i18n("Maintainer"), QStringLiteral("mgraesslin@kde.org")); |
|
|
|
QCommandLineOption lockOption(QStringLiteral("lock"), i18n("Disable configuration options")); |
|
QCommandLineOption replaceOption(QStringLiteral("replace"), i18n("Replace already-running ICCCM2.0-compliant window manager")); |
|
QCommandLineOption crashesOption(QStringLiteral("crashes"), i18n("Indicate that KWin has recently crashed n times"), QStringLiteral("n")); |
|
|
|
QCommandLineParser parser; |
|
parser.setApplicationDescription(i18n("KDE window manager")); |
|
parser.addVersionOption(); |
|
parser.addHelpOption(); |
|
parser.addOption(lockOption); |
|
parser.addOption(replaceOption); |
|
parser.addOption(crashesOption); |
|
|
|
parser.process(a); |
|
|
|
KWin::Application::setCrashCount(parser.value(crashesOption).toInt()); |
|
a.setConfigLock(parser.isSet(lockOption)); |
|
a.setReplace(parser.isSet(replaceOption)); |
|
|
|
// perform sanity checks |
|
if (a.platformName().toLower() != QStringLiteral("xcb")) { |
|
fprintf(stderr, "%s: FATAL ERROR expecting platform xcb but got platform %s\n", |
|
argv[0], qPrintable(a.platformName())); |
|
exit(1); |
|
} |
|
if (!KWin::display()) { |
|
fprintf(stderr, "%s: FATAL ERROR KWin requires Xlib support in the xcb plugin. Do not configure Qt with -no-xcb-xlib\n", |
|
argv[0]); |
|
exit(1); |
|
} |
|
|
|
a.start(); |
|
|
|
#warning SessionManager needs porting |
|
#if KWIN_QT5_PORTING |
|
KWin::SessionManager weAreIndeed; |
|
#endif |
|
KWin::SessionSaveDoneHelper helper; |
|
#warning insertCatalog needs porting |
|
#if KWIN_QT5_PORTING |
|
KGlobal::locale()->insertCatalog("kwin_effects"); |
|
KGlobal::locale()->insertCatalog("kwin_scripts"); |
|
KGlobal::locale()->insertCatalog("kwin_scripting"); |
|
#endif |
|
|
|
QString appname; |
|
if (KWin::screen_number == 0) |
|
appname = QStringLiteral("org.kde.kwin"); |
|
else |
|
appname.sprintf("org.kde.kwin-screen-%d", KWin::screen_number); |
|
|
|
QDBusConnection::sessionBus().interface()->registerService( |
|
appname, QDBusConnectionInterface::DontQueueService); |
|
|
|
return a.exec(); |
|
} |
|
|
|
#include "main.moc"
|
|
|