273 lines
7.2 KiB
C++
273 lines
7.2 KiB
C++
/*****************************************************************
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kwin - the KDE window manager
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Copyright (C) 1999, 2000 Matthias Ettrich <ettrich@kde.org>
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******************************************************************/
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// X11/Qt conflict
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#undef Bool
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//#define QT_CLEAN_NAMESPACE
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#include <kconfig.h>
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#include <ksimpleconfig.h>
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#include "main.h"
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#include "options.h"
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#include "atoms.h"
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#include "workspace.h"
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#include <dcopclient.h>
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#include <qsessionmanager.h>
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#include <X11/X.h>
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#include <X11/Xos.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/Xatom.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <signal.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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#include <kcmdlineargs.h>
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#include <kaboutdata.h>
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#include <klocale.h>
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#include <kcrash.h>
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using namespace KWinInternal;
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namespace KWinInternal {
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Options* options;
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};
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Atoms* atoms;
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extern Time qt_x_time;
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int kwin_screen_number = -1;
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static bool initting = FALSE;
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static DCOPClient * client = 0;
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/*static void crashHandler(int)
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{
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KCrash::setCrashHandler(0); // Exit on next crash.
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client->detach(); // Unregister with dcop.
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system("kwin&"); // Try to restart
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}*/
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int x11ErrorHandler(Display *d, XErrorEvent *e){
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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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fprintf(stderr, i18n("kwin: it looks like there's already a window manager running. kwin not started.\n").local8Bit());
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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 (initting) {
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fprintf(stderr, i18n("kwin: failure during initialization; aborting").local8Bit());
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exit(1);
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}
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return 0;
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}
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/*!
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Updates qt_x_time by receiving a current timestamp from the server.
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Use this function only when really necessary. Keep in mind that it's
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a roundtrip to the X-Server.
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*/
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void kwin_updateTime()
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{
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static QWidget* w = 0;
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if ( !w )
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w = new QWidget;
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long data = 1;
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XChangeProperty(qt_xdisplay(), w->winId(), atoms->kwin_running, atoms->kwin_running, 32,
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PropModeAppend, (unsigned char*) &data, 1);
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XEvent ev;
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XWindowEvent( qt_xdisplay(), w->winId(), PropertyChangeMask, &ev );
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qt_x_time = ev.xproperty.time;
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}
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Application::Application( )
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: KApplication( )
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{
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if (kwin_screen_number == -1)
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kwin_screen_number = DefaultScreen(qt_xdisplay());
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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(qt_xdisplay(), qt_xrootwin(), SubstructureRedirectMask );
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syncX(); // trigger error now
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options = new Options;
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atoms = new Atoms;
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// create workspace.
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Workspace* ws = 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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dcopClient()->send( "ksplash", "", "upAndRunning(QString)", QString("wm started"));
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if ( isSessionRestored() )
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ws->restoreLegacySession( kapp->sessionConfig() );
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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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delete options;
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}
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bool Application::x11EventFilter( XEvent *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::x11EventFilter( e );
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}
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class SessionManaged : public KSessionManaged
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{
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public:
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bool saveState( QSessionManager& sm ) {
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sm.release();
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if ( !sm.isPhase2() ) {
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sm.requestPhase2();
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return true;
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}
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Workspace::self()->storeSession( kapp->sessionConfig() );
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kapp->sessionConfig()->sync();
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return true;
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}
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} ;
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static void sighandler(int) {
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QApplication::exit();
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}
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static const char *version = "0.95";
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static const char *description = I18N_NOOP( "The KDE window manager." );
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extern "C" { int kdemain(int, char *[]); }
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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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if (! qstrcmp(argv[arg], "-session")) {
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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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// 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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QCString multiHead = getenv("KDE_MULTIHEAD");
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if (multiHead.lower() == "true") {
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Display* dpy = XOpenDisplay( NULL );
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if ( !dpy ) {
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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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QCString display_name = XDisplayString( dpy );
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XCloseDisplay( dpy );
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dpy = 0;
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if ((pos = display_name.findRev('.')) != -1 )
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display_name.remove(pos,10); // 10 is enough to be sure we removed ".s"
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QCString envir;
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if (number_of_screens != 1) {
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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_screen_number && fork() == 0 ) {
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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.data())) ) {
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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", I18N_NOOP("KWin"),
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version, description, KAboutData::License_BSD,
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I18N_NOOP("(c) 1999-2002, The KDE Developers"));
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aboutData.addAuthor("Matthias Ettrich",0, "ettrich@kde.org");
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aboutData.addAuthor("Cristian Tibirna",0, "tibirna@kde.org");
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aboutData.addAuthor("Daniel M. Duley",0, "mosfet@kde.org");
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KCmdLineArgs::init(argc, argv, &aboutData);
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if (signal(SIGTERM, sighandler) == SIG_IGN)
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signal(SIGTERM, SIG_IGN);
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if (signal(SIGINT, sighandler) == SIG_IGN)
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signal(SIGINT, SIG_IGN);
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if (signal(SIGHUP, sighandler) == SIG_IGN)
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signal(SIGHUP, SIG_IGN);
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Application a;
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SessionManaged weAreIndeed;
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// KCrash::setCrashHandler(crashHandler); // Try to restart on crash
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fcntl(ConnectionNumber(qt_xdisplay()), F_SETFD, 1);
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QCString appname;
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if (kwin_screen_number == 0)
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appname = "kwin";
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else
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appname.sprintf("kwin-screen-%d", kwin_screen_number);
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client = a.dcopClient();
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client->attach();
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client->registerAs( appname.data(), false);
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client->setDefaultObject( "KWinInterface" );
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return a.exec();
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}
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