class ServiceMonitor(Applet):
def __init__(self, parent, args=None):
Applet.__init__(self, parent)
self.widgets = {} ##< [dict] Place for all widgets, so they can be addressed nicely.
self.mainLayout = None ##< [QLayout] The layout containing all the widgets.
def init(self):
self.setHasConfigurationInterface(True)
self.configDialog = ConfigDialog(self)
self.configDialog.configurationChanged.connect(self.setupUi)
self.passwordDialog = PasswordDialog(self.configDialog)
# set up layout and widgets
self.setupUi()
## Sets up all widgets in a popup which can be opened when clicking the applet.
def setupUi(self):
# remove old contents on successive calls
deleteContentsRecursively(self.applet.layout())
deleteContentsRecursively(self.mainLayout)
# determine mode
if self.formFactor() == Plasma.Planar:
self.mode = 'desktop'
elif self.configDialog.panelBehavior() == 0:
self.mode = 'icons'
else:
self.mode = 'popup'
if self.mode == 'popup':
# 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)
self.icon.clicked.connect(self.togglePopup)
elif self.mode in ['desktop', 'icons']:
# Set up all widgets directly in the main applet.
self.verticalLayout = QGraphicsLinearLayout(Qt.Vertical)
self.applet.setLayout(self.verticalLayout)
self.mainLayout = QGraphicsGridLayout()
self.verticalLayout.addItem(self.mainLayout)
self.verticalLayout.addStretch(1)
self.applet.setAspectRatioMode(Plasma.IgnoreAspectRatio)
# this seems to be necessary to avoid display bugs
QTimer.singleShot(0, self.mainLayout.invalidate)
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.setMinimumSize(22, 22)
statusIcon.setMaximumSize(22, 22)
nameLabel.setMinimumHeight(22)
nameLabel.setMaximumHeight(22)
self.refreshStateIcon(service)
if self.mode == 'icons' and self.formFactor() == Plasma.Vertical:
self.mainLayout.addItem(statusIcon, i, 0)
elif self.mode == 'icons' and self.formFactor() == Plasma.Horizontal:
self.mainLayout.addItem(statusIcon, 0, i)
else:
self.mainLayout.addItem(statusIcon, i, 0)
self.mainLayout.addItem(nameLabel, i, 1)
statusIcon.clicked.connect(partial(self.iconClicked, service))
# Falls keine Services eingerichtet: Einleitungstext anzeigen
if not activeServices:
self.widgets['intro'] = Plasma.Label()
if self.mode != 'icons':
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.'))
else:
self.widgets['intro'].setText(self.tr('Right click to add services.'))
self.widgets['intro'].setMinimumWidth(180)
self.widgets['intro'].setAlignment(Qt.AlignHCenter | Qt.AlignVCenter)
self.mainLayout.addItem(self.widgets['intro'], 0, 0)
# in icons mode, squeeze as much as possible
if self.mode == 'icons' and self.formFactor() == Plasma.Horizontal:
self.mainLayout.setMaximumWidth(self.mainLayout.minimumWidth())
elif self.mode == 'icons' and self.formFactor() == Plasma.Vertical:
self.mainLayout.setMaximumHeight(self.mainLayout.minimumHeight())
# 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 und alte Connections trennen
for service in self.configDialog.allServices():
service.setPolling(False)
try: service.runningStateChanged.disconnect()
except: pass
# Aktive Prozesse neu einrichten und Polling starten
interval = self.configDialog.pollingInterval()
sleepTime = self.configDialog.sleepTime()
for service in activeServices:
service.runningStateChanged.connect(partial(self.refreshStateIcon, service))
service.wrongPassword[str].connect(partial(self.askPasswordAndRetry, service))
service.setSleepTime(sleepTime)
service.setErrorReporting(not self.configDialog.suppressStdout())
service.setPolling(True, interval)
## Triggered on wrongPassword signal. Retries the last command.
def askPasswordAndRetry(self, service):
try: self.passwordDialog.newPasswordAvailable.disconnect()
except: pass # if no slots are connected
self.passwordDialog.setWindowTitle(service.name)
self.passwordDialog.setCommandInfo(getattr(service, service.lastCommand()))
self.passwordDialog.focusPasswordField()
self.passwordDialog.setVisible(True)
def retry(pw):
self.passwordDialog.setVisible(False)
QTimer.singleShot(0, partial(service.retryLastCommand, pw))
self.passwordDialog.newPasswordAvailable[QString].connect(retry)
## Open the config dialog; called by plasma.
def showConfigurationInterface(self):
self.configDialog.show()
## Starts or stops a service corresponding to the icon clicked.
def iconClicked(self, service):
if service.state[0] == 'missing':
QMessageBox.warning(None, self.tr("Error"), self.tr('Service "%1" not installed. Aborting.').arg(service.id))
return
if service.state[1] in ['running', 'starting']: command = "stopcommand"
if service.state[1] in ['stopped', 'stopping']: command = "startcommand"
service.execute(command, 'requested', self.passwordDialog.password())
## Updates the icon corresponding to the service argument.
def refreshStateIcon(self, service, reason = ''):
icon = self.configDialog.runningStateIndicator(service)
self.widgets[service.id]['status'].setIcon(icon)
self.widgets[service.id]['status'].setToolTip("%s\nStatus: %s" % (service.name, service.state[1]))
# send a KNotify notification if the change wasn't issued by the user
if self.configDialog.useKNotify() and service.state[1] in ["running", "stopped"] and reason == 'polling':
if service.state[1] == "running":
message = self.tr("%1 is now running.").arg(service.name)
else:
message = self.tr("%1 has been stopped.").arg(service.name)
self.knotify(icon, message)
## The call to knotify must be made from an external script, because python allows no self-connections
def knotify(self, icon, message):
byteArray = QByteArray()
buffer = QBuffer(byteArray)
icon.pixmap(QSize(32, 32)).toImage().rgbSwapped().save(buffer, "PNG") # KNotify seems to expect a BGR file
tmp = file('icon.png', 'w')
tmp.write(byteArray.data())
tmp.close()
self.knotifyProcess = KProcess()
self.knotifyProcess.setProgram(QStringList() << "/usr/bin/python" << ("%s/KNotify.py" % codedir) << message)
self.knotifyProcess.start()
## 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))
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))
