class ServiceMonitor(Applet):
def __init__(self, parent, args=None):
Applet.__init__(self, parent)
## [dict] Place for all widgets, so they can be addressed nicely.
self.widgets = {}
## [QSignalMapper] Maps every QIcon to its corresponding service.
self.iconMapper = None
## [QLayout] The layout containing all the widgets.
self.mainLayout = None
def init(self):
# Konfig-Dilog einrichten
self.setHasConfigurationInterface(True)
self.configDialog = ConfigDialog(self)
QObject.connect(self.configDialog, SIGNAL('configurationChanged()'), self, SLOT('setupServicesAndWidgets()'))
# Benutzeroberfläche einrichten
self.setupAppletUi() if self.formFactor() == Plasma.Planar else self.setupPopupUi()
# SignalMapper für die Buttons (Icons) einrichten
self.iconMapper = QSignalMapper()
QObject.connect(self.iconMapper, SIGNAL('mapped(QObject*)'), self, SLOT('iconClicked(QObject*)'))
# Widgets im Main-Layout erzeugen, Timer starten
self.setupServicesAndWidgets()
## Sets up all widgets in a popup which can be opened when clicking the applet.
def setupPopupUi(self):
# QGraphicsView initialisieren, in das alles gezeichnet wird
self.scene = QGraphicsScene()
self.view = QGraphicsView()
self.view.setScene(self.scene)
self.view.setFrameStyle(QFrame.NoFrame)
self.view.setStyleSheet('background-color: transparent;')
self.view.setAlignment(Qt.AlignHCenter | Qt.AlignTop)
self.view.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.view.setVerticalScrollBarPolicy(Qt.ScrollBarAsNeeded)
# Layout-Container-Widget erzeugen und in die Szene einfügen
self.container = QGraphicsWidget()
self.mainLayout = QGraphicsGridLayout()
self.container.setLayout(self.mainLayout)
self.scene.addItem(self.container)
self.mainLayout.setPreferredWidth(270)
# Popup erzeugen
self.popup = Plasma.Dialog()
self.popup.setWindowFlags(Qt.Popup)
self.popupLayout = QVBoxLayout()
self.popup.setLayout(self.popupLayout)
self.popupLayout.addWidget(self.view)
self.popup.resize(250, 300)
# Im Applet ein Icon anzeigen
self.icon = Plasma.IconWidget(KIcon(":/panel-icon.png"), "")
self.iconLayout = QGraphicsLinearLayout()
self.iconLayout.addItem(self.icon)
self.setAspectRatioMode(Plasma.ConstrainedSquare)
self.applet.setLayout(self.iconLayout)
QObject.connect(self.icon, SIGNAL("clicked()"), self, SLOT('togglePopup()'))
## Sets up all widgets directly in the main applet.
def setupAppletUi(self):
self.verticalLayout = QGraphicsLinearLayout(Qt.Vertical)
self.setLayout(self.verticalLayout)
self.mainLayout = QGraphicsGridLayout()
self.verticalLayout.addItem(self.mainLayout)
self.verticalLayout.addStretch(1)
self.applet.setAspectRatioMode(Plasma.IgnoreAspectRatio)
## Open the config dialog; called by plasma.
def showConfigurationInterface(self):
self.configDialog.show()
## [slot] Create all widgets inside the main layout and set up the services for monitoring.
# This function is called as slot whenever the configuration has changed.
@pyqtSlot()
def setupServicesAndWidgets(self):
# Alte Widgets löschen und Szene leeren
while self.mainLayout.count():
self.mainLayout.itemAt(0).graphicsItem().deleteLater()
self.mainLayout.removeAt(0)
self.widgets = {}
activeServices = self.configDialog.activeServices()
# Falls Services eingerichtet: Service-Widgets anzeigen
if activeServices:
for i, service in enumerate(activeServices):
nameLabel = Plasma.Label()
statusIcon = Plasma.IconWidget('')
self.widgets[service.id] = { 'name': nameLabel, 'status': statusIcon }
nameLabel.setText(u'<strong>%s</strong>' % service.name)
nameLabel.nativeWidget().setWordWrap(False)
statusIcon.setMinimumHeight(22)
statusIcon.setMaximumHeight(22)
statusIcon.setSizePolicy(QSizePolicy.Maximum, QSizePolicy.Maximum)
self.refreshStateIcon(service)
self.mainLayout.addItem(statusIcon, i, 0)
self.mainLayout.addItem(nameLabel, i, 1)
self.iconMapper.setMapping(statusIcon, service)
QObject.connect(statusIcon, SIGNAL('clicked()'), self.iconMapper, SLOT('map()'))
# Falls keine Services eingerichtet: Einleitungstext anzeigen
if not activeServices:
self.widgets['intro'] = Plasma.Label()
self.widgets['intro'].setText(self.tr('<b>Thank you for downloading<br/>Service Monitor!</b><br/><br/>Right click to open the<br/>settings dialog.'))
self.mainLayout.addItem(self.widgets['intro'], 0, 0)
# Hier ist das Layout eingerichtet - aktivieren
self.mainLayout.activate()
# Scrollbarer Bereich verkleinert sich nicht automatisch im Popup, also von Hand
if hasattr(self, 'popup'):
self.container.adjustSize()
self.scene.setSceneRect(self.container.geometry())
# Alle Polling-Prozesse anhalten
for service in self.configDialog.allServices():
service.stopPolling()
# Aktive Prozesse neu einrichten und Polling starten
env = self.configDialog.processEnvironment()
interval = self.configDialog.pollingInterval()
sleepTime = self.configDialog.sleepTime()
for service in activeServices:
QObject.connect(service, SIGNAL('stateChanged()'), self.serviceStateChanged)
service.setProcessEnvironment(env)
service.setSleepTime(sleepTime)
service.setPollingInterval(interval)
service.startPolling()
## [slot] Starts or stops a service corresponding to the icon clicked.
# @param service The service corresponding to the clicked item, provided by self.iconMapper
@pyqtSlot('QObject*')
def iconClicked(self, service):
if service.state[0] == 'unavailable':
print 'Service %s not installed. Aborting.' % service.id
return
elif service.state[1] in ['active', 'starting']:
service.execStopCommand()
elif service.state[1] in ['inactive', 'stopping']:
service.execStartCommand()
self.refreshStateIcon(service)
## [slot] Updates the icon corresponding to the service which triggered this slot.
@pyqtSlot()
def serviceStateChanged(self):
service = self.sender()
self.refreshStateIcon(service)
## Updates the icon corresponding to the service argument.
def refreshStateIcon(self, service):
icon = KIcon(':/status-%s-%s.png' % service.state)
self.widgets[service.id]['status'].setIcon(icon)
## [slot] Shows/hides popup dialog.
@pyqtSlot()
def togglePopup(self):
if self.popup.isVisible():
self.popup.animatedHide(Plasma.Direction(0))
else:
self.popup.move(self.popupPosition(self.popup.sizeHint()))
self.popup.animatedShow(Plasma.Direction(0))
