Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdebase@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 516 insertions, 0 deletions

diff --git a/kicker/proxy/appletproxy.cpp b/kicker/proxy/appletproxy.cpp
new file mode 100644
index 000000000..d9ac588d5
--- /dev/null
+++ b/kicker/proxy/appletproxy.cpp
@@ -0,0 +1,516 @@
+/*****************************************************************
+
+Copyright (c) 2000 Matthias Elter <elter@kde.org>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTDHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************/
+
+#include <stdlib.h>
+
+#include <qstring.h>
+#include <qfile.h>
+#include <qobjectlist.h>
+#include <qxembed.h>
+
+#include <kapplication.h>
+#include <kglobal.h>
+#include <klibloader.h>
+#include <klocale.h>
+#include <kstandarddirs.h>
+#include <kcmdlineargs.h>
+#include <kdebug.h>
+#include <kmessagebox.h>
+#include <kpanelapplet.h>
+#include <kaboutdata.h>
+#include <qfileinfo.h>
+#include <dcopclient.h>
+#include <kwin.h>
+
+#include "appletinfo.h"
+
+#include "appletproxy.h"
+#include "appletproxy.moc"
+
+#include <X11/Xlib.h>
+
+KPanelApplet::Position directionToPosition( int d )
+{
+    switch( d ) {
+    case 1:   return KPanelApplet::pTop;
+    case 2:   return KPanelApplet::pRight;
+    case 3:   return KPanelApplet::pLeft;
+    default:
+    case 0:   return KPanelApplet::pBottom;
+    }
+}
+
+static KCmdLineOptions options[] =
+{
+  { "+desktopfile", I18N_NOOP("The applet's desktop file"), 0 },
+  { "configfile <file>", I18N_NOOP("The config file to be used"), 0 },
+  { "callbackid <id>", I18N_NOOP("DCOP callback id of the applet container"), 0 },
+  KCmdLineLastOption
+};
+
+extern "C" KDE_EXPORT int kdemain( int argc, char ** argv )
+{
+    KAboutData aboutData( "kicker", I18N_NOOP("Panel applet proxy.")
+                          , "v0.1.0"
+                          ,I18N_NOOP("Panel applet proxy.")
+                          , KAboutData::License_BSD
+                          , "(c) 2000, The KDE Developers");
+    KCmdLineArgs::init(argc, argv, &aboutData );
+    aboutData.addAuthor("Matthias Elter",0, "elter@kde.org");
+    aboutData.addAuthor("Matthias Ettrich",0, "ettrich@kde.org");
+    KApplication::addCmdLineOptions();
+    KCmdLineArgs::addCmdLineOptions(options); // Add our own options.
+
+    KApplication a;
+    a.disableSessionManagement();
+
+    KGlobal::dirs()->addResourceType("applets", KStandardDirs::kde_default("data") +
+				     "kicker/applets");
+
+    // setup proxy object
+    AppletProxy proxy(0, "appletproxywidget");
+
+    // parse cmdline args
+    KCmdLineArgs *args = KCmdLineArgs::parsedArgs();
+
+    if ( args->count() == 0 )
+        KCmdLineArgs::usage(i18n("No desktop file specified") );
+
+    // Perhaps we should use a konsole-like solution here (shell, list of args...)
+    QString desktopfile( args->arg(0) );
+
+    // load applet DSO
+    if ( !QFile::exists( desktopfile ) &&
+         !desktopfile.endsWith( ".desktop" ) )
+        desktopfile.append( ".desktop" );
+
+    if ( !QFile::exists( desktopfile ) )
+        desktopfile = locate( "applets", desktopfile ).latin1();
+
+    proxy.loadApplet( desktopfile, args->getOption("configfile"));
+
+    // dock into our applet container
+    QCString callbackid = args->getOption( "callbackid");
+    if ( callbackid.isEmpty() )
+	proxy.showStandalone();
+    else
+	proxy.dock(args->getOption("callbackid"));
+
+    return a.exec();
+}
+
+AppletProxy::AppletProxy(QObject* parent, const char* name)
+  : QObject(parent, name)
+  , DCOPObject("AppletProxy")
+  , _info(0)
+  , _applet(0)
+{
+    // try to attach to DCOP server
+    if (!kapp->dcopClient()->attach()) {
+	kdError() << "Failed to attach to DCOP server." << endl;
+        KMessageBox::error(0,
+                           i18n("The applet proxy could not be started due to DCOP communication problems."),
+                           i18n("Applet Loading Error"));
+	exit(0);
+    }
+
+    if (!kapp->dcopClient()->registerAs("applet_proxy", true)) {
+	kdError() << "Failed to register at DCOP server." << endl;
+        KMessageBox::error(0,
+                           i18n("The applet proxy could not be started due to DCOP registration problems."),
+                           i18n("Applet Loading Error"));
+	exit(0);
+    }
+
+    _bg = QPixmap();
+}
+
+AppletProxy::~AppletProxy()
+{
+    kapp->dcopClient()->detach();
+    delete _info;
+    delete _applet;
+}
+
+void AppletProxy::loadApplet(const QString& desktopFile, const QString& configFile)
+{
+    QString df;
+
+    // try simple path first
+    QFileInfo finfo( desktopFile );
+    if ( finfo.exists() ) {
+	df = finfo.absFilePath();
+    } else {
+	// locate desktop file
+	df = KGlobal::dirs()->findResource("applets", desktopFile);
+    }
+
+    QFile file(df);
+    // does the config file exist?
+    if (df.isNull() || !file.exists()) {
+	kdError() << "Failed to locate applet desktop file: " << desktopFile << endl;
+        KMessageBox::error(0,
+                           i18n("The applet proxy could not load the applet information from %1.").arg(desktopFile), 
+                           i18n("Applet Loading Error"));
+	exit(0);
+    }
+
+    // create AppletInfo instance
+    delete _info;
+    _info = new AppletInfo(df);
+
+    // set the config file
+    if (!configFile.isNull())
+	_info->setConfigFile(configFile);
+
+    // load applet DSO
+    _applet = loadApplet(*_info);
+
+    // sanity check
+    if (!_applet)
+    {
+	kdError() << "Failed to load applet: " << _info->library() << endl;
+        KMessageBox::error(0,
+                           i18n("The applet %1 could not be loaded via the applet proxy.").arg(_info->name()), 
+                           i18n("Applet Loading Error"));
+	exit(0);
+    }
+
+    // connect updateLayout signal
+    connect(_applet, SIGNAL(updateLayout()), SLOT(slotUpdateLayout()));
+    // connect requestFocus signal
+    connect(_applet, SIGNAL(requestFocus()), SLOT(slotRequestFocus()));
+}
+
+KPanelApplet* AppletProxy::loadApplet(const AppletInfo& info)
+{
+    KLibLoader* loader = KLibLoader::self();
+    KLibrary* lib = loader->library(QFile::encodeName(info.library()));
+
+    if (!lib)
+    {
+        kdWarning() << "cannot open applet: " << info.library()
+                    << " because of " << loader->lastErrorMessage() << endl;
+        return 0;
+    }
+
+    KPanelApplet* (*init_ptr)(QWidget *, const QString&);
+    init_ptr = (KPanelApplet* (*)(QWidget *, const QString&))lib->symbol( "init" );
+
+    if (!init_ptr)
+    {
+        kdWarning() << info.library() << " is not a kicker plugin!" << endl;
+        return 0;
+    }
+
+    return init_ptr(0, info.configFile());
+}
+
+void AppletProxy::repaintApplet(QWidget* widget) 
+{
+    widget->repaint();
+ 
+    const QObjectList* children = widget->children();
+
+    if (!children)
+    {
+        return;
+    }
+
+    QObjectList::iterator it = children->begin();
+    for (; it != children->end(); ++it)
+    {
+        QWidget *w = dynamic_cast<QWidget*>(*it);
+        if (w)
+        {
+            repaintApplet(w);
+        }
+    }
+}
+
+void AppletProxy::dock(const QCString& callbackID)
+{
+    kdDebug(1210) << "Callback ID: " << callbackID << endl;
+
+    _callbackID = callbackID;
+
+    // try to attach to DCOP server
+    DCOPClient* dcop = kapp->dcopClient();
+
+    dcop->setNotifications(true);
+    connect(dcop, SIGNAL(applicationRemoved(const QCString&)),
+	    SLOT(slotApplicationRemoved(const QCString&)));
+
+    WId win;
+
+    // get docked
+    {
+	QCString replyType;
+	QByteArray data, replyData;
+	QDataStream dataStream( data, IO_WriteOnly );
+
+	int actions = 0;
+	if (_applet) actions = _applet->actions();
+	dataStream << actions;
+
+	int type = 0;
+	if (_applet) type = static_cast<int>(_applet->type());
+	dataStream << type;
+
+	// we use "call" to know whether it was sucessful
+
+	int screen_number = 0;
+	if (qt_xdisplay())
+	    screen_number = DefaultScreen(qt_xdisplay());
+	QCString appname;
+	if (screen_number == 0)
+	    appname = "kicker";
+	else
+	    appname.sprintf("kicker-screen-%d", screen_number);
+
+	if ( !dcop->call(appname, _callbackID, "dockRequest(int,int)",
+			 data, replyType, replyData ) )
+        {
+            kdError() << "Failed to dock into the panel." << endl;
+            KMessageBox::error(0,
+                               i18n("The applet proxy could not dock into the panel due to DCOP communication problems."),
+                               i18n("Applet Loading Error"));
+            exit(0);
+        }
+
+	QDataStream reply( replyData, IO_ReadOnly );
+	reply >> win;
+
+        // request background
+        dcop->send(appname, _callbackID, "getBackground()", data);
+    }
+
+    if (win)
+    {
+        if (_applet)
+        {
+            _applet->hide();
+        }
+        QXEmbed::initialize();
+        QXEmbed::embedClientIntoWindow(_applet, win);
+    }
+    else
+    {
+        kdError() << "Failed to dock into the panel." << endl;
+        KMessageBox::error(0,
+                           i18n("The applet proxy could not dock into the panel."),
+                           i18n("Applet Loading Error"));
+        delete _applet;
+        _applet = 0;
+
+        exit(0);
+    }
+
+}
+
+bool AppletProxy::process(const QCString &fun, const QByteArray &data,
+                          QCString& replyType, QByteArray &replyData)
+{
+    if ( fun == "widthForHeight(int)" )
+	{
+	    QDataStream dataStream( data, IO_ReadOnly );
+	    int height;
+	    dataStream >> height;
+	    QDataStream reply( replyData, IO_WriteOnly );
+	    replyType = "int";
+
+	    if (!_applet)
+		reply << height;
+	    else
+		reply << _applet->widthForHeight(height);
+
+	    return true;
+	}
+    else if ( fun == "heightForWidth(int)" )
+	{
+	    QDataStream dataStream( data, IO_ReadOnly );
+	    int width;
+	    dataStream >> width;
+	    QDataStream reply( replyData, IO_WriteOnly );
+	    replyType = "int";
+
+	    if(!_applet)
+		reply << width;
+	    else
+		reply << _applet->heightForWidth(width);
+
+	    return true;
+	}
+    else if ( fun == "setDirection(int)" )
+	{
+	    QDataStream dataStream( data, IO_ReadOnly );
+	    int dir;
+	    dataStream >> dir;
+
+	    if(_applet) {
+		_applet->setPosition(directionToPosition(dir));
+	    }
+	    return true;
+	}
+    else if ( fun == "setAlignment(int)" )
+	{
+	    QDataStream dataStream( data, IO_ReadOnly );
+	    int alignment;
+	    dataStream >> alignment;
+
+	    if(_applet) {
+		_applet->setAlignment( (KPanelApplet::Alignment)alignment );
+	    }
+	    return true;
+	}
+    else if ( fun == "removedFromPanel()" )
+	{
+            delete _applet;
+            _applet = 0;
+            exit(0);
+	    return true;
+	}
+    else if ( fun == "about()" )
+	{
+	    if(_applet) _applet->action( KPanelApplet::About );
+	    return true;
+	}
+    else if ( fun == "help()" )
+	{
+	    if(_applet) _applet->action( KPanelApplet::Help );
+	    return true;
+	}
+    else if ( fun == "preferences()" )
+	{
+	    if(_applet) _applet->action( KPanelApplet::Preferences );
+	    return true;
+	}
+    else if (fun == "reportBug()" )
+  {
+      if(_applet) _applet->action( KPanelApplet::ReportBug );
+      return true;
+  }
+    else if ( fun == "actions()" )
+	{
+	    QDataStream reply( replyData, IO_WriteOnly );
+	    int actions = 0;
+	    if(_applet) actions = _applet->actions();
+	    reply << actions;
+	    replyType = "int";
+	    return true;
+	}
+    else if ( fun == "type()" )
+	{
+	    QDataStream reply( replyData, IO_WriteOnly );
+	    int type = 0;
+	    if (_applet) type = static_cast<int>(_applet->type());
+	    reply << type;
+	    replyType = "int";
+	    return true;
+	}
+    else if ( fun == "setBackground(QPixmap)" )
+        {
+            QDataStream dataStream( data, IO_ReadOnly ); 
+            dataStream >> _bg;
+            if(_applet)
+                if ( _bg.isNull() ) { // no transparency
+		    _applet->unsetPalette();
+		    _applet->repaint();
+		}
+                else { //transparency
+		    _applet->blockSignals(true);
+		    _applet->setBackgroundMode(Qt::FixedPixmap);
+		    _applet->setPaletteBackgroundPixmap(_bg);
+		    repaintApplet(_applet);
+		    _applet->blockSignals(false);
+                }
+            return true;
+        }
+    return false;
+}
+
+void AppletProxy::slotUpdateLayout()
+{
+    if(_callbackID.isNull()) return;
+
+    QByteArray data;
+    int screen_number = 0;
+    if (qt_xdisplay())
+	screen_number = DefaultScreen(qt_xdisplay());
+    QCString appname;
+    if (screen_number == 0)
+	appname = "kicker";
+    else
+	appname.sprintf("kicker-screen-%d", screen_number);
+
+    kapp->dcopClient()->send(appname, _callbackID, "updateLayout()", data);
+}
+
+void AppletProxy::slotRequestFocus()
+{
+    if(_callbackID.isNull()) return;
+
+    QByteArray data;
+    int screen_number = 0;
+    if (qt_xdisplay())
+	screen_number = DefaultScreen(qt_xdisplay());
+    QCString appname;
+    if (screen_number == 0)
+	appname = "kicker";
+    else
+	appname.sprintf("kicker-screen-%d", screen_number);
+
+    kapp->dcopClient()->send(appname, _callbackID, "requestFocus()", data);
+}
+
+void AppletProxy::slotApplicationRemoved(const QCString& appId)
+{
+    int screen_number = 0;
+    if (qt_xdisplay())
+	screen_number = DefaultScreen(qt_xdisplay());
+    QCString appname;
+    if (screen_number == 0)
+	appname = "kicker";
+    else
+	appname.sprintf("kicker-screen-%d", screen_number);
+
+    if(appId == appname) {
+	kdDebug(1210) << "Connection to kicker lost, shutting down" << endl;
+	kapp->quit();
+    }
+}
+
+void AppletProxy::showStandalone()
+{
+    if (!_applet)
+    {
+        return;
+    }
+
+    _applet->resize( _applet->widthForHeight( 48 ), 48 );
+    _applet->setMinimumSize( _applet->size() );
+    _applet->setCaption( _info->name() );
+    kapp->setMainWidget( _applet );
+    _applet->show();
+}
+