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428 lines
13 KiB
428 lines
13 KiB
/******************************************************************** |
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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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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.h" |
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//#define QT_CLEAN_NAMESPACE |
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#include <ksharedconfig.h> |
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#include <kglobal.h> |
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#include <klocale.h> |
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#include <stdlib.h> |
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#include <kcmdlineargs.h> |
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#include <kaboutdata.h> |
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#include <kcrash.h> |
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#include <unistd.h> |
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#include <signal.h> |
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#include <fcntl.h> |
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#include <QX11Info> |
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#include <stdio.h> |
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#include <fixx11h.h> |
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#include <QtDBus/QtDBus> |
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#include <kdialog.h> |
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#include <kstandarddirs.h> |
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#include <kdebug.h> |
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#include <QLabel> |
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#include <QComboBox> |
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#include <QVBoxLayout> |
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#include "atoms.h" |
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#include "options.h" |
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#include "sm.h" |
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#include "utils.h" |
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#include "effects.h" |
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#define INT8 _X11INT8 |
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#define INT32 _X11INT32 |
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#include <X11/Xproto.h> |
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#undef INT8 |
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#undef INT32 |
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namespace KWin |
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{ |
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Options* options; |
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Atoms* atoms; |
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int screen_number = -1; |
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static bool initting = false; |
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// Whether to run Xlib in synchronous mode and print backtraces for X errors. |
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// Note that you most probably need to configure cmake with "-D__KDE_HAVE_GCC_VISIBILITY=0" |
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// and -rdynamic in CXXFLAGS for kBacktrace() to work. |
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static bool kwin_sync = false; |
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static |
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int x11ErrorHandler(Display *d, XErrorEvent *e) |
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{ |
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char msg[80], req[80], number[80]; |
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bool ignore_badwindow = true; //maybe temporary |
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if (initting && |
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( |
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e->request_code == X_ChangeWindowAttributes |
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|| e->request_code == X_GrabKey |
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) |
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&& (e->error_code == BadAccess)) |
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{ |
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fputs(i18n("kwin: it looks like there's already a window manager running. kwin not started.\n").toLocal8Bit(), stderr); |
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exit(1); |
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} |
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if (ignore_badwindow && (e->error_code == BadWindow || e->error_code == BadColor)) |
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return 0; |
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XGetErrorText(d, e->error_code, msg, sizeof(msg)); |
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sprintf(number, "%d", e->request_code); |
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XGetErrorDatabaseText(d, "XRequest", number, "<unknown>", req, sizeof(req)); |
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fprintf(stderr, "kwin: %s(0x%lx): %s\n", req, e->resourceid, msg); |
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if( kwin_sync ) |
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kDebug() << kBacktrace(); |
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if (initting) |
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{ |
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fputs(i18n("kwin: failure during initialization; aborting").toLocal8Bit(), stderr); |
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exit(1); |
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} |
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return 0; |
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} |
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class AlternativeWMDialog : public KDialog |
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{ |
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public: |
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AlternativeWMDialog() : KDialog() |
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{ |
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setButtons( KDialog::Ok | KDialog::Cancel ); |
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QWidget* mainWidget = new QWidget( this ); |
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QVBoxLayout* layout = new QVBoxLayout( mainWidget ); |
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QString text = i18n("KWin is unstable.\n" |
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"It seems to have crashed several times in a row.\n" |
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"You can select another window manager to run:"); |
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QLabel* textLabel = new QLabel( text, mainWidget ); |
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layout->addWidget( textLabel ); |
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wmList = new QComboBox( mainWidget ); |
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wmList->setEditable( true ); |
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layout->addWidget( wmList ); |
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addWM( "metacity" ); |
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addWM( "openbox" ); |
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addWM( "fvwm2" ); |
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addWM( "kwin" ); |
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setMainWidget(mainWidget); |
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raise(); |
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centerOnScreen( this ); |
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} |
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void addWM( const QString& wm ) |
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{ |
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// TODO: check if wm is installed |
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if( !KStandardDirs::findExe( wm ).isEmpty() ) |
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{ |
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wmList->addItem( wm ); |
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} |
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} |
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QString selectedWM() const { return wmList->currentText(); } |
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private: |
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QComboBox* wmList; |
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}; |
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int Application::crashes = 0; |
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Application::Application( ) |
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: KApplication( ), owner( screen_number ) |
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{ |
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if( KCmdLineArgs::parsedArgs( "qt" )->isSet( "sync" )) |
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{ |
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kwin_sync = true; |
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XSynchronize( display(), True ); |
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kDebug() << "Running KWin in sync mode"; |
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} |
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KCmdLineArgs* args = KCmdLineArgs::parsedArgs(); |
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KSharedConfig::Ptr config = KGlobal::config(); |
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if (!config->isImmutable() && args->isSet("lock")) |
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{ |
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#warning this shouldn not be necessary |
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//config->setReadOnly(true); |
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config->reparseConfiguration(); |
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} |
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if (screen_number == -1) |
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screen_number = DefaultScreen(display()); |
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if( !owner.claim( args->isSet( "replace" ), true )) |
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{ |
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fputs(i18n("kwin: unable to claim manager selection, another wm running? (try using --replace)\n").toLocal8Bit(), stderr); |
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::exit(1); |
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} |
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connect( &owner, SIGNAL( lostOwnership()), SLOT( lostSelection())); |
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KCrash::setEmergencySaveFunction( Application::crashHandler ); |
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crashes = args->getOption("crashes").toInt(); |
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if(crashes >= 4) |
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{ |
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// Something has gone seriously wrong |
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AlternativeWMDialog dialog; |
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QString cmd = "kwin"; |
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if( dialog.exec() == QDialog::Accepted ) |
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{ |
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cmd = dialog.selectedWM(); |
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} |
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else |
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::exit(1); |
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if( cmd.length() > 500 ) |
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{ |
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kDebug() << "Command is too long, truncating"; |
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cmd = cmd.left(500); |
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} |
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kDebug() << "Starting" << cmd << "and exiting"; |
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char buf[1024]; |
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sprintf(buf, "%s &", cmd.toAscii().data()); |
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system(buf); |
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::exit(1); |
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} |
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// Disable compositing if we have had too many crashes |
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if( crashes >= 2 ) |
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{ |
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kDebug() << "Too many crashes recently, disabling compositing"; |
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KConfigGroup compgroup( config, "Compositing" ); |
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compgroup.writeEntry( "Enabled", false ); |
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} |
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// Reset crashes count if we stay up for more that 15 seconds |
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QTimer::singleShot( 15*1000, this, SLOT( resetCrashesCount() )); |
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// if there was already kwin running, it saved its configuration after loosing the selection -> reread |
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config->reparseConfiguration(); |
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initting = true; // startup.... |
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// install X11 error handler |
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XSetErrorHandler( x11ErrorHandler ); |
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// check whether another windowmanager is running |
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XSelectInput(display(), rootWindow(), SubstructureRedirectMask ); |
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syncX(); // trigger error now |
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atoms = new Atoms; |
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initting = false; // TODO |
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// This tries to detect compositing options and can use GLX. GLX problems |
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// (X errors) shouldn't cause kwin to abort, so this is out of the |
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// critical startup section where x errors cause kwin to abort. |
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options = new Options; |
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// create workspace. |
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(void) new Workspace( isSessionRestored() ); |
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syncX(); // trigger possible errors, there's still a chance to abort |
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initting = false; // startup done, we are up and running now. |
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XEvent e; |
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e.xclient.type = ClientMessage; |
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e.xclient.message_type = XInternAtom( display(), "_KDE_SPLASH_PROGRESS", False ); |
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e.xclient.display = display(); |
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e.xclient.window = rootWindow(); |
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e.xclient.format = 8; |
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strcpy( e.xclient.data.b, "wm" ); |
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XSendEvent( display(), rootWindow(), False, SubstructureNotifyMask, &e ); |
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} |
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Application::~Application() |
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{ |
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delete Workspace::self(); |
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if( owner.ownerWindow() != None ) // if there was no --replace (no new WM) |
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XSetInputFocus( display(), PointerRoot, RevertToPointerRoot, xTime() ); |
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delete options; |
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delete effects; |
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delete atoms; |
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} |
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void Application::lostSelection() |
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{ |
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sendPostedEvents(); |
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delete Workspace::self(); |
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// remove windowmanager privileges |
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XSelectInput(display(), rootWindow(), PropertyChangeMask ); |
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quit(); |
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} |
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bool Application::x11EventFilter( XEvent *e ) |
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{ |
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if ( Workspace::self() && Workspace::self()->workspaceEvent( e ) ) |
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return true; |
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return KApplication::x11EventFilter( e ); |
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} |
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bool Application::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 KApplication::notify( o, e ); |
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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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void Application::crashHandler(int signal) |
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{ |
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crashes++; |
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fprintf( stderr, "Application::crashHandler() called with signal %d; recent crashes: %d\n", signal, crashes ); |
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char cmd[1024]; |
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sprintf( cmd, "kwin --crashes %d &", crashes ); |
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sleep( 1 ); |
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system( cmd ); |
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} |
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void Application::resetCrashesCount() |
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{ |
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crashes = 0; |
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} |
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} // namespace |
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static const char version[] = "3.0"; |
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static const char description[] = I18N_NOOP( "KDE window manager" ); |
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extern "C" |
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KDE_EXPORT int kdemain( int argc, char * argv[] ) |
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{ |
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bool restored = false; |
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for (int arg = 1; arg < argc; arg++) |
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{ |
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if (! qstrcmp(argv[arg], "-session")) |
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{ |
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restored = true; |
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break; |
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} |
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} |
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if (! restored) |
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{ |
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// we only do the multihead fork if we are not restored by the session |
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// manager, since the session manager will register multiple kwins, |
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// one for each screen... |
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QByteArray multiHead = getenv("KDE_MULTIHEAD"); |
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if (multiHead.toLower() == "true") |
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{ |
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Display* dpy = XOpenDisplay( NULL ); |
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if ( !dpy ) |
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{ |
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fprintf(stderr, "%s: FATAL ERROR while trying to open display %s\n", |
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argv[0], XDisplayName(NULL ) ); |
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exit (1); |
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} |
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int number_of_screens = ScreenCount( dpy ); |
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KWin::screen_number = DefaultScreen( dpy ); |
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int pos; // temporarily needed to reconstruct DISPLAY var if multi-head |
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QByteArray display_name = XDisplayString( dpy ); |
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XCloseDisplay( dpy ); |
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dpy = 0; |
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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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if (number_of_screens != 1) |
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{ |
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for (int i = 0; i < number_of_screens; i++ ) |
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{ |
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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::screen_number && fork() == 0 ) |
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{ |
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KWin::screen_number = i; |
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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::screen_number); |
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if (putenv( strdup(envir.toAscii())) ) |
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{ |
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fprintf(stderr, |
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"%s: WARNING: unable to set DISPLAY environment variable\n", |
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argv[0]); |
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perror("putenv()"); |
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} |
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} |
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} |
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} |
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KAboutData aboutData( "kwin", 0, ki18n("KWin"), |
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version, ki18n(description), KAboutData::License_GPL, |
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ki18n("(c) 1999-2005, The KDE Developers")); |
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aboutData.addAuthor(ki18n("Matthias Ettrich"),KLocalizedString(), "ettrich@kde.org"); |
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aboutData.addAuthor(ki18n("Cristian Tibirna"),KLocalizedString(), "tibirna@kde.org"); |
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aboutData.addAuthor(ki18n("Daniel M. Duley"),KLocalizedString(), "mosfet@kde.org"); |
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aboutData.addAuthor(ki18n("Luboš Luňák"), ki18n( "Maintainer" ), "l.lunak@kde.org"); |
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KCmdLineArgs::init(argc, argv, &aboutData); |
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KCmdLineOptions args; |
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args.add("lock", ki18n("Disable configuration options")); |
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args.add("replace", ki18n("Replace already-running ICCCM2.0-compliant window manager")); |
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args.add("crashes <n>", ki18n("Indicate that KWin has recently crashed n times")); |
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KCmdLineArgs::addCmdLineOptions( args ); |
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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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KWin::Application a; |
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KWin::SessionManager weAreIndeed; |
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KWin::SessionSaveDoneHelper helper; |
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KGlobal::locale()->insertCatalog( "kwin_effects" ); |
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fcntl(XConnectionNumber(KWin::display()), F_SETFD, 1); |
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QString appname; |
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if (KWin::screen_number == 0) |
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appname = "org.kde.kwin"; |
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else |
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appname.sprintf("org.kde.kwin-screen-%d", KWin::screen_number); |
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QDBusConnection::sessionBus().interface()->registerService( appname, QDBusConnectionInterface::DontQueueService ); |
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return a.exec(); |
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} |
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#include "main.moc"
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