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Diffstat (limited to 'kicker/proxy/appletproxy.cpp')
| -rw-r--r-- | kicker/proxy/appletproxy.cpp | 516 |
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(); +} + |