better labels and layout

template/qtgui/midiinquickwidget.py

@@ -34,9 +34,11 @@ import engine.api as api
 
 class QuickMidiInputComboController(QtWidgets.QWidget):
     """This widget breaks a bit with the convention of engine/gui. However, it is a pure convenience
-    fire-and-forget function with no callbacks."""
+    fire-and-forget function with no callbacks.
 
-    def __init__(self, parentWidget):
+    If you give a text it must already be translated."""
+
+    def __init__(self, parentWidget, text=None, stretch=True):
         super().__init__(parentWidget)
         self.parentWidget = parentWidget
         self.layout = QtWidgets.QHBoxLayout()
@@ -54,7 +56,10 @@ class QuickMidiInputComboController(QtWidgets.QWidget):
         self.wholePanel = parentWidget.ui.auditionerWidget
         """
         self.label = QtWidgets.QLabel(self)
-        self.label.setText(QtCore.QCoreApplication.translate("QuickMidiInputComboController", "Midi Input. Use JACK to connect multiple inputs."))
+        if text:
+            self.label.setText(text) #already translated by parent.
+        else:
+            self.label.setText(QtCore.QCoreApplication.translate("QuickMidiInputComboController", "Midi Input. Use JACK to connect multiple inputs."))
         self.layout.addWidget(self.label)
 
         #if not api.isStandaloneMode():
@@ -66,9 +71,8 @@ class QuickMidiInputComboController(QtWidgets.QWidget):
         self.comboBox.showPopup = self.showPopup
         self.comboBox.activated.connect(self._newPortChosen)
 
-        self.cboxPortname, self.cboxMidiPortUid = api.getMidiInputNameAndUuid() #these don't change during runtime.
-
-        self.layout.addStretch()
+        if stretch:
+            self.layout.addStretch()
         #api.callbacks.startLoadingAuditionerInstrument.append(self.callback_startLoadingAuditionerInstrument)
         #api.callbacks.auditionerInstrumentChanged.append(self.callback_auditionerInstrumentChanged)
         #api.callbacks.auditionerVolumeChanged.append(self.callback__auditionerVolumeChanged)
@@ -130,17 +134,23 @@ class QuickMidiInputComboController(QtWidgets.QWidget):
         """externalPort is in the Client:Port JACK format
         If "" False or None disconnect all ports."""
 
+        cboxPortname, cboxMidiPortUid = api.getMidiInputNameAndUuid() #these don't change during runtime. But if the system it not ready yet it returns None, None
+
+        if cboxPortname is None and cboxMidiPortUid is None:
+            logging.info("engine is not ready yet to deliver midi input name and port id. This is normal during startup but a problem during normal runtime.")
+            return #startup delay
+
         try:
-            currentConnectedList = cbox.JackIO.get_connected_ports(self.cboxMidiPortUid)
+            currentConnectedList = cbox.JackIO.get_connected_ports(cboxMidiPortUid)
         except: #port not found.
             currentConnectedList = []
 
         for port in currentConnectedList:
-            cbox.JackIO.port_disconnect(port, self.cboxPortname)
+            cbox.JackIO.port_disconnect(port, cboxPortname)
 
         if externalPort:
             availablePorts = self.getAvailablePorts()
             if not (externalPort in availablePorts["hardware"] or externalPort in availablePorts["software"]):
                 raise RuntimeError(f"QuickMidiInput was instructed to connect to port {externalPort}, which does not exist")
 
-            cbox.JackIO.port_connect(externalPort, self.cboxPortname)
+            cbox.JackIO.port_connect(externalPort, cboxPortname)