Rename kwin to twin (Part 2 of 2)

1 files changed, 350 insertions, 0 deletions

diff --git a/twin/main.cpp b/twin/main.cpp
new file mode 100644
index 000000000..c30dc3601
--- /dev/null
+++ b/twin/main.cpp
@@ -0,0 +1,350 @@
+/*****************************************************************
+ 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>
+
+You can Freely distribute this program under the GNU General Public
+License. See the file "COPYING" for the exact licensing terms.
+******************************************************************/
+
+//#define QT_CLEAN_NAMESPACE
+#include <kconfig.h>
+
+#include "main.h"
+
+#include <klocale.h>
+#include <kglobal.h>
+#include <kdebug.h>
+#include <stdlib.h>
+#include <kcmdlineargs.h>
+#include <kaboutdata.h>
+#include <dcopclient.h>
+#include <dcopref.h>
+#include <unistd.h>
+#include <signal.h>
+#include <fcntl.h>
+
+#include "atoms.h"
+#include "options.h"
+#include "sm.h"
+
+#define INT8 _X11INT8
+#define INT32 _X11INT32
+#include <X11/Xproto.h>
+#undef INT8
+#undef INT32
+
+namespace KWinInternal
+{
+
+Options* options;
+
+Atoms* atoms;
+
+int screen_number = -1;
+
+static bool initting = FALSE;
+
+static
+int x11ErrorHandler(Display *d, XErrorEvent *e)
+    {
+    char msg[80], req[80], number[80];
+    bool ignore_badwindow = TRUE; //maybe temporary
+
+    if (initting &&
+        (
+         e->request_code == X_ChangeWindowAttributes
+         || e->request_code == X_GrabKey
+         )
+        && (e->error_code == BadAccess)) 
+        {
+        fputs(i18n("twin: it looks like there's already a window manager running. twin not started.\n").local8Bit(), stderr);
+        exit(1);
+        }
+
+    if (ignore_badwindow && (e->error_code == BadWindow || e->error_code == BadColor))
+        return 0;
+
+    XGetErrorText(d, e->error_code, msg, sizeof(msg));
+    sprintf(number, "%d", e->request_code);
+    XGetErrorDatabaseText(d, "XRequest", number, "<unknown>", req, sizeof(req));
+
+    fprintf(stderr, "twin: %s(0x%lx): %s\n", req, e->resourceid, msg);
+
+    if (initting) 
+        {
+        fputs(i18n("twin: failure during initialization; aborting").local8Bit(), stderr);
+        exit(1);
+        }
+    return 0;
+    }
+
+Application::Application( )
+: KApplication( ), owner( screen_number )
+    {
+#ifdef USE_QT4
+    // I'm special...
+    setQuitOnLastWindowClosed(false);
+#endif // USE_QT4
+    KCmdLineArgs* args = KCmdLineArgs::parsedArgs();
+    if (!config()->isImmutable() && args->isSet("lock"))
+        {
+        config()->setReadOnly(true);
+        config()->reparseConfiguration();
+        }
+
+    if (screen_number == -1)
+        screen_number = DefaultScreen(qt_xdisplay());
+
+    if( !owner.claim( args->isSet( "replace" ), true ))
+        {
+        Display* dpy = qt_xdisplay();
+        Window w;
+        Atom a;
+        static char net_wm_sm[] = "WM_Sxx";
+
+        snprintf (net_wm_sm, sizeof (net_wm_sm), "WM_S%d", screen_number);
+        a = XInternAtom (dpy, net_wm_sm, False);
+
+        w = XGetSelectionOwner (dpy, a);
+
+        if (w != None)
+            {
+            Atom actual;
+            int format;
+            unsigned long n, left;
+            unsigned char *data;
+            Atom twinRunningAtom = XInternAtom (dpy, "_KDE_WM_IS_KWIN", True);
+
+            int result = XGetWindowProperty (dpy, w, twinRunningAtom, 0L, 1L, False,
+                XA_ATOM, &actual, &format,
+                &n, &left, &data);
+
+            if (result == Success && data != None && format == 32 )
+                {
+                Atom a;
+                a = *(long*)data;
+                XFree ( (void *) data);
+                if( !owner.claim( true, true ))
+                    {
+                    fputs(i18n("twin: unable to claim manager selection, another wm running? (try using --replace)\n").local8Bit(), stderr);
+                    ::exit(1);
+                    }
+                }
+            else
+                {
+                fputs(i18n("twin: unable to claim manager selection, another wm running? (try using --replace)\n").local8Bit(), stderr);
+                ::exit(1);
+                }
+            }
+        else
+            {
+            fputs(i18n("twin: unable to claim manager selection, another wm running? (try using --replace)\n").local8Bit(), stderr);
+            ::exit(1);
+            }
+        }
+    connect( &owner, TQT_SIGNAL( lostOwnership()), TQT_SLOT( lostSelection()));
+    
+    // if there was already twin running, it saved its configuration after loosing the selection -> reread
+    config()->reparseConfiguration();
+
+    initting = TRUE; // startup....
+
+    // install X11 error handler
+    XSetErrorHandler( x11ErrorHandler );
+
+    // check  whether another windowmanager is running
+    XSelectInput(qt_xdisplay(), qt_xrootwin(), SubstructureRedirectMask  );
+    syncX(); // trigger error now
+
+    options = new Options;
+    atoms = new Atoms;
+
+    // Signal that we are The KWin!
+    Atom kde_wm_system_modal_notification;
+    kde_wm_system_modal_notification = XInternAtom(qt_xdisplay(), "_KDE_WM_IS_KWIN", False);
+    XChangeProperty(qt_xdisplay(), owner.ownerWindow(), kde_wm_system_modal_notification, XA_INTEGER, 32, PropModeReplace, (unsigned char *) "TRUE", 1L);
+
+    // create workspace.
+    (void) new Workspace( isSessionRestored() );
+
+    syncX(); // trigger possible errors, there's still a chance to abort
+
+    DCOPRef ref( "kded", "kded" );
+    ref.send( "unloadModule", TQCString( "kdetrayproxy" ));
+    
+    initting = FALSE; // startup done, we are up and running now.
+       
+    dcopClient()->send( "ksplash", "", "upAndRunning(TQString)", TQString("wm started"));
+    XEvent e;
+    e.xclient.type = ClientMessage;
+    e.xclient.message_type = XInternAtom( qt_xdisplay(), "_KDE_SPLASH_PROGRESS", False );
+    e.xclient.display = qt_xdisplay();
+    e.xclient.window = qt_xrootwin();
+    e.xclient.format = 8;
+    strcpy( e.xclient.data.b, "wm started" );
+    XSendEvent( qt_xdisplay(), qt_xrootwin(), False, SubstructureNotifyMask, &e );
+    }
+
+Application::~Application()
+    {
+    delete Workspace::self();
+    if( owner.ownerWindow() != None ) // if there was no --replace (no new WM)
+        {
+        XSetInputFocus( qt_xdisplay(), PointerRoot, RevertToPointerRoot, GET_QT_X_TIME() );
+        DCOPRef ref( "kded", "kded" );
+        if( !ref.send( "loadModule", TQCString( "kdetrayproxy" )))
+            kdWarning( 176 ) << "Loading of kdetrayproxy failed." << endl;
+        }
+    delete options;
+    }
+
+void Application::lostSelection()
+    {
+    delete Workspace::self();
+    // remove windowmanager privileges
+    XSelectInput(qt_xdisplay(), qt_xrootwin(), PropertyChangeMask );
+    DCOPRef ref( "kded", "kded" );
+    if( !ref.send( "loadModule", TQCString( "kdetrayproxy" )))
+        kdWarning( 176 ) << "Loading of kdetrayproxy failed." << endl;
+    quit();
+    }
+
+bool Application::x11EventFilter( XEvent *e )
+    {
+    if ( Workspace::self()->workspaceEvent( e ) )
+             return TRUE;
+    return KApplication::x11EventFilter( e );
+    }
+    
+static void sighandler(int) 
+    {
+    TQApplication::exit();
+    }
+
+
+} // namespace
+
+static const char version[] = "3.0";
+static const char description[] = I18N_NOOP( "KDE window manager" );
+
+static KCmdLineOptions args[] =
+    {
+        { "lock", I18N_NOOP("Disable configuration options"), 0 },
+        { "replace", I18N_NOOP("Replace already-running ICCCM2.0-compliant window manager"), 0 },
+        KCmdLineLastOption
+    };
+
+extern "C"
+KDE_EXPORT int kdemain( int argc, char * argv[] )
+    {
+    bool restored = false;
+    for (int arg = 1; arg < argc; arg++) 
+        {
+        if (! qstrcmp(argv[arg], "-session")) 
+            {
+            restored = true;
+            break;
+            }
+        }
+
+    if (! restored) 
+        {
+        // we only do the multihead fork if we are not restored by the session
+	// manager, since the session manager will register multiple twins,
+        // one for each screen...
+        TQCString multiHead = getenv("KDE_MULTIHEAD");
+        if (multiHead.lower() == "true") 
+            {
+
+            Display* dpy = XOpenDisplay( NULL );
+            if ( !dpy ) 
+                {
+                fprintf(stderr, "%s: FATAL ERROR while trying to open display %s\n",
+                        argv[0], XDisplayName(NULL ) );
+                exit (1);
+                }
+
+            int number_of_screens = ScreenCount( dpy );
+            KWinInternal::screen_number = DefaultScreen( dpy );
+            int pos; // temporarily needed to reconstruct DISPLAY var if multi-head
+            TQCString display_name = XDisplayString( dpy );
+            XCloseDisplay( dpy );
+            dpy = 0;
+
+            if ((pos = display_name.findRev('.')) != -1 )
+                display_name.remove(pos,10); // 10 is enough to be sure we removed ".s"
+
+            TQCString envir;
+            if (number_of_screens != 1) 
+                {
+                for (int i = 0; i < number_of_screens; i++ ) 
+                    {
+		    // if execution doesn't pass by here, then twin
+		    // acts exactly as previously
+                    if ( i != KWinInternal::screen_number && fork() == 0 ) 
+                        {
+                        KWinInternal::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(), KWinInternal::screen_number);
+
+                if (putenv( strdup(envir.data())) ) 
+                    {
+                    fprintf(stderr,
+                            "%s: WARNING: unable to set DISPLAY environment variable\n",
+                            argv[0]);
+                    perror("putenv()");
+                    }
+                }
+            }
+        }
+
+    KGlobal::locale()->setMainCatalogue("twin");
+
+    KAboutData aboutData( "twin", I18N_NOOP("KWin"),
+                          version, description, KAboutData::License_GPL,
+                          I18N_NOOP("(c) 1999-2005, The KDE Developers"));
+    aboutData.addAuthor("Matthias Ettrich",0, "ettrich@kde.org");
+    aboutData.addAuthor("Cristian Tibirna",0, "tibirna@kde.org");
+    aboutData.addAuthor("Daniel M. Duley",0, "mosfet@kde.org");
+    aboutData.addAuthor("Luboš Luňák", I18N_NOOP( "Maintainer" ), "l.lunak@kde.org");
+
+    KCmdLineArgs::init(argc, argv, &aboutData);
+    KCmdLineArgs::addCmdLineOptions( args );
+
+    if (signal(SIGTERM, KWinInternal::sighandler) == SIG_IGN)
+        signal(SIGTERM, SIG_IGN);
+    if (signal(SIGINT, KWinInternal::sighandler) == SIG_IGN)
+        signal(SIGINT, SIG_IGN);
+    if (signal(SIGHUP, KWinInternal::sighandler) == SIG_IGN)
+        signal(SIGHUP, SIG_IGN);
+
+    KApplication::disableAutoDcopRegistration();
+    KWinInternal::Application a;
+    KWinInternal::SessionManaged weAreIndeed;
+    KWinInternal::SessionSaveDoneHelper helper;
+
+    fcntl(ConnectionNumber(qt_xdisplay()), F_SETFD, 1);
+
+    TQCString appname;
+    if (KWinInternal::screen_number == 0)
+        appname = "twin";
+    else
+        appname.sprintf("twin-screen-%d", KWinInternal::screen_number);
+
+    DCOPClient* client = a.dcopClient();
+    client->registerAs( appname.data(), false);
+    client->setDefaultObject( "KWinInterface" );
+
+    return a.exec();
+    }
+
+#include "main.moc"