class Main(QtGui.QMainWindow):
def __init__(self):
QtGui.QMainWindow.__init__(self)
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
self.ui.btnTakePic.clicked.connect(
self.takePicClicked
) # when an object btnTakePic is clicked run function self.takePicClicked
self.ui.btnAutofocus.clicked.connect(self.autofocusClicked)
self.ui.btnMoveUp.clicked.connect(self.moveUpClicked)
self.ui.btnMoveDown.clicked.connect(self.moveDownClicked)
self.ui.btnStart.clicked.connect(self.startClicked)
self.ui.btnStop.clicked.connect(self.stopClicked)
self.cameraOperator = CameraOperator(
"./images/") # basepath for the results (within robotchem folder)
self.platform = Platform()
self.backgroundThread = BackgroundThread(self.cameraOperator,
self.platform, self)
self.connect(self.backgroundThread, SIGNAL("displayPic"),
self.displayPic)
self.backgroundMode = 0 # initialisation of the backgroundMode variable
def takePicClicked(
self): # take picture, put it in a folder and display it
if self._processRunning(
): # checks whether a background process is running
return
masterFolder = "master_" + str(time.time())
self.cameraOperator.newSubfolder(masterFolder)
image, _ = self.cameraOperator.takePic(
) # takes a picture and puts it in the created subfolder
self.displayPic(image)
def displayPic(self, image): #displys a picture
pixmap = QtGui.QPixmap.fromImage(
ImageQt(image)) # transform an image file into pixmap
# display image in labPic label that fits into its size and maintains the aspect ratio
self.ui.labPic.setPixmap(
pixmap.scaled(self.ui.labPic.size(), QtCore.Qt.KeepAspectRatio))
def autofocusClicked(self): # run the autofocus program
if self._processRunning():
return
self.backgroundMode = 1
self.backgroundThread.start(
) #start uses run (from backgroundThread class)
def moveUpClicked(self):
if self._processRunning():
return
self.platform.moveUp(
10
) # move the platform up by number of steps (multiplies of 0.05 mm)
def moveDownClicked(self):
if self._processRunning():
return
self.platform.moveDown(10) # move the platform down
def startClicked(self): # run the scheduler program
if self._processRunning():
return
self.backgroundMode = 2
# read the values of time and interval from GUI spinners and pass them to the scheduler function
self.schedulerArgs = (self.ui.spinTime.value(),
self.ui.spinInterval.value())
self.backgroundThread.start()
def stopClicked(self): # placeholder
if self._processRunning():
return
def _processRunning(
self
): # checks whether another process is running - if so, rejects an action (prevents from clicking buttons)
if self.backgroundThread.isRunning():
print "Background process running. Rejecting requested action."
return True
else:
return False
