def __init__(self):
super(GainOffset, self).__init__()
#log.debug("creation")
from barbecue.ui.GainOffset_layout import Ui_MainWindow
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
self.setGeometry(450, 350, 1080, 600)
self.replace_widgets()
self.last_model = None
self.set_app_defaults()
self.setup_signals()
# It's necessary to create the dialog objects ahead of time so
# the test scripts can click their buttons
self.file_dialog = QtGui.QFileDialog()
self.show()
class GainOffset(QtGui.QMainWindow):
""" The main interface for the GainOffset application. Can be created
from unittest or a main() for full test coverage.
"""
def __init__(self):
super(GainOffset, self).__init__()
#log.debug("creation")
from barbecue.ui.GainOffset_layout import Ui_MainWindow
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
self.setGeometry(450, 350, 1080, 600)
self.replace_widgets()
self.last_model = None
self.set_app_defaults()
self.setup_signals()
# It's necessary to create the dialog objects ahead of time so
# the test scripts can click their buttons
self.file_dialog = QtGui.QFileDialog()
self.show()
def replace_widgets(self):
""" From: http://stackoverflow.com/questions/4625102/\
how-to-replace-a-widget-with-another-using-qt
Replace the current placeholders from qt designer with the
custom widgets.
"""
# Create the new widget
self.ui.image_dialog = NoButtonImageDialog()
# Remove the placeholder widget from the layout
liph = self.ui.labelImagePlaceholder
vli = self.ui.verticalLayout
vli.removeWidget(liph)
liph.close()
# Add the new widget to the layout
vli.insertWidget(0, self.ui.image_dialog)
vli.update()
def set_app_defaults(self):
""" Setup preliminary values of all widgets.
"""
# Hide the progress bar for better startup looks
self.ui.progressBar.setVisible(False)
self.ui.spinBoxGainStart.setMinimum(0)
self.ui.spinBoxGainStart.setMaximum(254)
self.ui.spinBoxGainStart.setValue(0)
self.ui.spinBoxGainEnd.setMinimum(1)
self.ui.spinBoxGainEnd.setMaximum(255)
self.ui.spinBoxGainEnd.setValue(255)
self.ui.spinBoxOffsetStart.setMinimum(0)
self.ui.spinBoxOffsetStart.setMaximum(254)
self.ui.spinBoxOffsetStart.setValue(0)
self.ui.spinBoxOffsetEnd.setMinimum(1)
self.ui.spinBoxOffsetEnd.setMaximum(255)
self.ui.spinBoxOffsetEnd.setValue(255)
self.ui.spinBoxLineTime.setMinimum(25)
self.ui.spinBoxLineTime.setMaximum(1000)
self.ui.spinBoxLineTime.setValue(100)
self.ui.spinBoxIntegrationTime.setMinimum(2)
self.ui.spinBoxIntegrationTime.setMaximum(98)
self.ui.spinBoxIntegrationTime.setValue(98)
# Create a datamodel, add it to the widget
self.datamod = QtGui.QStandardItemModel()
self.model_header = QtCore.QStringList()
self.model_header.append('Offset')
self.model_header.append('Gain')
self.datamod.setHorizontalHeaderLabels(self.model_header)
self.ui.treeView.setModel(self.datamod)
# Trigger an update of the text
self.update_summary()
# Create the timer so the test controller can have access to the
# various parts of the gain/offset loop control
self.process_timer = QtCore.QTimer()
self.process_timer.setSingleShot(True)
self.process_timer.timeout.connect(self.loop_process)
# Progress indicators for data saving
self.save_timer = QtCore.QTimer()
self.save_timer.setSingleShot(True)
self.save_timer.timeout.connect(self.loop_save)
self.load_timer = QtCore.QTimer()
self.load_timer.setSingleShot(True)
self.load_timer.timeout.connect(self.loop_load)
# When the save file action is activated, it needs to wait for
# the filename selection dialog to close first. Signal is
# connected with lambda function to filename below
self.save_wait_timer = QtCore.QTimer()
self.save_wait_timer.setSingleShot(True)
self.load_wait_timer = QtCore.QTimer()
self.load_wait_timer.setSingleShot(True)
# Load / save / process parameters
self.load_position = 0
self.orig_gain_start = 0
self.linetime = self.ui.spinBoxLineTime.value()
self.integration = self.ui.spinBoxIntegrationTime.value()
def setup_signals(self):
""" Configure widget signals.
"""
spgs = self.ui.spinBoxGainStart
spgs.valueChanged.connect(self.move_gain_range)
spgs.valueChanged.connect(self.update_summary)
spos = self.ui.spinBoxOffsetStart
spos.valueChanged.connect(self.move_offset_range)
spos.valueChanged.connect(self.update_summary)
splt = self.ui.spinBoxLineTime
splt.valueChanged.connect(self.move_linetime)
#self.ui.toolButtonStart.clicked.connect(self.start_process)
self.ui.toolButtonStart.clicked.connect(self.setup_process)
self.ui.toolButtonStop.clicked.connect(self.stop_process)
# If start of end ranges change, update the summary text
spge = self.ui.spinBoxGainEnd
spge.valueChanged.connect(self.update_summary)
spoe = self.ui.spinBoxOffsetEnd
spoe.valueChanged.connect(self.update_summary)
# Open/Save results
self.ui.actionOpen.triggered.connect(self.open_process)
self.ui.actionSave.triggered.connect(self.save_process)
# Tree list widget updates image on click
self.ui.treeView.clicked.connect(self.update_image)
def update_image(self):
""" Based on the tree view selected datamodel item, build an
image in the dialog.
"""
idx = self.ui.treeView.selectedIndexes()
item = self.datamod.item(idx[0].row(), idx[0].column())
self.results_to_image(item)
def results_to_image(self, item):
""" given an item from the datamodel that has results of gain
0-255, construct a numpy array and assign that to the image.
"""
src_data = []
for gain_row in item.results:
src_data.append(gain_row.data)
#log.info("How many rows: %s" % len(src_data))
img_data = range(len(src_data))
position = 0
while position < len(img_data):
img_data[position] = src_data[position]
position += 1
new_data = numpy.array(img_data).astype(float)
local_plot = self.ui.image_dialog.get_plot()
# Apparently get_default_item is not supported by the python xy
# implementation of guiqwt.
#plot.get_default_item().set_data(new_data)
first = local_plot.get_items()[1]
first.set_data(new_data)
local_plot.replot()
def open_process(self):
""" Get a filename to load.
"""
file_name = self.file_dialog.getOpenFileName()
# Trigger the timer after the dialog has had a chance to close
self.load_wait_timer.timeout.connect(lambda: self.load_file(file_name))
self.load_wait_timer.start(500)
def load_file(self, file_name):
""" Set the progress bar indicators and convert a csv file to
datamodel.
"""
total = self.get_line_total(file_name)
msg = "Loading %s combinations from %s" % (total, file_name)
self.ui.labelProcessing.setText(msg)
self.ui.progressBar.total = total
self.ui.progressBar.setValue(0)
self.op_count = 0
csv_header = ["Offset", "Gain", "Line Time", "Integration Time"]
self.csv_file = csv.DictReader(open(file_name, 'rb'),
csv_header, 'Data')
# Read past the header:
self.csv_file.next()
self.last_model = None
self.loop_load()
def loop_load(self):
""" Iterate through the file data to be loaded inside a timer,
update the interface progress.
"""
line_fail = 0
try:
line = self.csv_file.next()
#log.info("File header: %s" % line['Offset'])
except StopIteration:
line_fail = 1
log.warn("Problem reading file")
self.load_position += 1
self.update_progress_bar()
if line_fail:
log.info("Load complete, add final")
last_entry = self.last_model.results[0]
offs_it = QtGui.QStandardItem(str(last_entry.offset))
offs_it.results = self.last_model.results
gain_it = QtGui.QStandardItem("Gain 0-255")
self.datamod.appendRow([offs_it, gain_it])
return
new_data = []
for item in line["Data"][0:2047]:
new_data.append(float(item))
new_result = model.Result(line["Gain"], line["Offset"],
line["Line Time"],
line["Integration Time"],
new_data
)
# If it's the very first pass, just assign it
if self.last_model == None:
self.last_model = model.Model()
# compare current line offset to last offset, if different, add last
# item, start a new item
new_offset = new_result.offset
if len(self.last_model.results) == 0:
old_offset = new_offset
else:
old_offset = self.last_model.results[0].offset
if new_offset != old_offset:
log.info("Offset change, add to model")
offs_it = QtGui.QStandardItem(str(old_offset))
offs_it.results = self.last_model.results
gain_it = QtGui.QStandardItem("Gain 0-255")
self.datamod.appendRow([offs_it, gain_it])
self.last_model = model.Model()
self.last_model.results.append(new_result)
if self.load_position < self.ui.progressBar.total:
self.load_timer.start(0)
def get_line_total(self, file_name):
""" Make a pass through the file, read the total number of
lines.
"""
lfile = open(file_name)
lcount = 0
for _ in lfile.readlines():
lcount += 1
lfile.close()
return lcount
def save_process(self):
""" Select a filename to save the current results.
"""
file_name = self.file_dialog.getSaveFileName()
# Trigger the timer after the dialog has had a chance to close
self.save_wait_timer.timeout.connect(lambda: self.save_file(file_name))
self.save_wait_timer.start(300)
def save_file(self, file_name):
""" Write the current contents of the datamodel displayed in the
tree widget to disk.
"""
total = self.datamod.rowCount() * 255
msg = "Saving %s combinations to %s" % (total, file_name)
self.ui.labelProcessing.setText(msg)
self.ui.progressBar.total = total
self.ui.progressBar.setValue(0)
self.op_count = 0
self.csv_file = open(file_name, "wb")
self.write_header(self.csv_file)
self.save_position = 0
self.loop_save()
def loop_save(self):
""" Iterate through the data to be saved in a timer to enable
load inhibits and progress bar updates.
"""
item = self.datamod.item(self.save_position, 0)
log.info("Write item: %s", item)
self.write_results(self.csv_file, item)
self.save_position += 1
if self.save_position < self.datamod.rowCount():
self.save_timer.start(0)
def write_results(self, csv_file, item):
""" Print the contents of the datamodel item to disk.
"""
for result in item.results:
csv_file.write("%s," % result.offset)
csv_file.write("%s," % result.gain)
csv_file.write("%s," % result.linetime)
csv_file.write("%s," % result.integration)
for pixel in result.data:
csv_file.write("%s," % pixel)
csv_file.write("\n")
self.update_progress_bar()
def write_header(self, csv_file):
""" write the csv file format header to the passed in file.
"""
head_str = "Offset,Gain,Line Time,Integration Time,Data\n"
csv_file.write(head_str)
def update_summary(self):
""" Create a summary text showing how many iterations will be
processed.
"""
#log.info("update summary")
offset_range = self.ui.spinBoxOffsetEnd.value() - \
self.ui.spinBoxOffsetStart.value() + 1
gain_range = self.ui.spinBoxGainEnd.value() - \
self.ui.spinBoxGainStart.value() + 1
total = offset_range * gain_range
msg = "System will process %s combinations." % total
self.ui.labelProcessing.setText(msg)
# Store the current total combinations for use by the progress
# bar update function
self.ui.progressBar.total = total
self.ui.progressBar.setValue(0)
def setup_process(self):
""" Configure the test iteration based on set parameters,
trigger the loop timer to start the process.
"""
log.info("Start setup")
self.ui.progressBar.setVisible(True)
self.orig_gain_start = self.ui.spinBoxGainStart.value()
self.orig_gain_end = self.ui.spinBoxGainEnd.value()
self.orig_offset_start = self.ui.spinBoxOffsetStart.value()
self.orig_offset_end = self.ui.spinBoxOffsetEnd.value()
self.offset = self.orig_offset_start
self.linetime = self.ui.spinBoxLineTime.value()
self.integration = self.ui.spinBoxIntegrationTime.value()
self.op_count = 0
self.acquire_model = model.Model()
self.acquire_model.assign("single")
self.process_timer.start(0)
def loop_process(self):
""" Once the timer has been activated, loop through the test
iteration structure until all offset/gain options have been
processed.
"""
gain = self.orig_gain_start
while gain <= self.orig_gain_end:
#log.debug("Gain: %s" % gain)
result = self.acquire_model.scan(gain, self.offset,
self.linetime,
self.integration
)
if not result:
log.critical("Problem scan %s, %s", gain, self.offset)
self.update_progress_bar()
gain += 1
offs_it = QtGui.QStandardItem(str(self.offset))
offs_it.results = self.acquire_model.results
# Reset the results list for next pass
self.acquire_model.results = []
#log.info("Store results: %s" % len(offs_it.results))
gain_it = QtGui.QStandardItem("Gain 0-255")
self.datamod.appendRow([offs_it, gain_it])
self.offset += 1
if self.offset <= self.orig_offset_end:
if not self.process_timer.isActive():
#log.info("Start timer: %s" % self.offset)
self.process_timer.start(10)
else:
log.info("end offset loop")
def stop_process(self):
""" set the global variable to inhibit a running process, reset
gui items.
"""
self.process_timer.stop()
self.save_timer.stop()
def update_progress_bar(self):
""" Given a op_count value, assign the progress bar to the
percentage of total operations.
"""
self.op_count += 1
self.op_count = self.op_count * 1.0
tot = self.ui.progressBar.total * 1.0
perc = (self.op_count / tot) * 100.0
self.ui.progressBar.setValue(perc)
def move_linetime(self):
""" Change the integration time range to make sure the user
cannot set it more than 2 - line time.
"""
lt_value = self.ui.spinBoxLineTime.value()
self.ui.spinBoxIntegrationTime.setMaximum(lt_value - 2)
def move_gain_range(self):
""" Make sure the end value is always at least 1 more than the
start value.
"""
gs_value = self.ui.spinBoxGainStart.value()
self.ui.spinBoxGainEnd.setMinimum(gs_value + 1)
def move_offset_range(self):
""" Make sure the end value is always at least 1 more than the
start value.
"""
os_value = self.ui.spinBoxOffsetStart.value()
self.ui.spinBoxOffsetEnd.setMinimum(os_value + 1)
