def getToolbars(self):
if not self.bar:
bar = QToolBar('Live data')
bar.addAction(self.actionPrint)
bar.addSeparator()
bar.addAction(self.actionLogScale)
bar.addSeparator()
bar.addAction(self.actionUnzoom)
self.bar = bar
return [self.bar]
def getToolbars(self):
bar = QToolBar('Live data')
# bar.addAction(self.actionWriteXml)
bar.addAction(self.actionPrint)
bar.addSeparator()
bar.addAction(self.actionLogScale)
bar.addSeparator()
bar.addAction(self.actionUnzoom)
bar.addAction(self.actionSetAsROI)
# bar.addSeparator()
# bar.addAction(self.actionSelectChannels)
return [bar]
def createPanelToolbar(self):
toolbar = QToolBar('Live data')
toolbar.addAction(self.actionOpen)
toolbar.addAction(self.actionPrint)
toolbar.addSeparator()
toolbar.addAction(self.actionLogScale)
toolbar.addSeparator()
toolbar.addAction(self.actionKeepRatio)
toolbar.addAction(self.actionUnzoom)
toolbar.addAction(self.actionColormap)
toolbar.addAction(self.actionMarkCenter)
toolbar.addAction(self.actionROI)
return toolbar
def getToolbars(self):
if not self.bar:
bar = QToolBar('Editor')
bar.addAction(self.actionNew)
bar.addAction(self.actionOpen)
bar.addAction(self.actionSave)
bar.addSeparator()
bar.addAction(self.actionPrint)
bar.addSeparator()
bar.addAction(self.actionUndo)
bar.addAction(self.actionRedo)
bar.addSeparator()
bar.addAction(self.actionCut)
bar.addAction(self.actionCopy)
bar.addAction(self.actionPaste)
bar.addSeparator()
bar.addAction(self.actionRun)
bar.addAction(self.actionSimulate)
bar.addAction(self.actionGet)
bar.addAction(self.actionUpdate)
showToolText(bar, self.actionRun)
showToolText(bar, self.actionSimulate)
showToolText(bar, self.actionGet)
showToolText(bar, self.actionUpdate)
self.bar = bar
return [self.bar]
def getToolbars(self):
if not self.bar:
bar = QToolBar('Logbook')
bar.addAction(self.actionBack)
bar.addAction(self.actionForward)
bar.addSeparator()
bar.addAction(self.actionRefresh)
bar.addAction(self.actionPrint)
bar.addSeparator()
bar.addAction(self.actionAddComment)
bar.addAction(self.actionAddRemark)
bar.addSeparator()
bar.addAction(self.actionNewSample)
bar.addAction(self.actionAttachFile)
bar.addSeparator()
box = QLineEdit(self)
btn = QPushButton('Search', self)
bar.addWidget(box)
bar.addWidget(btn)
def callback():
if hasattr(QWebPage, 'FindWrapsAroundDocument'): # WebKit
self.preview.findText(box.text(),
QWebPage.FindWrapsAroundDocument)
else:
# WebEngine wraps automatically
self.preview.findText(box.text())
box.returnPressed.connect(callback)
btn.clicked.connect(callback)
self.bar = bar
return [self.bar]
def getToolbars(self):
bar = QToolBar('Live data')
bar.addAction(self.actionWriteXml)
bar.addAction(self.actionPrint)
bar.addSeparator()
bar.addAction(self.actionLogScale)
bar.addSeparator()
bar.addAction(self.actionUnzoom)
bar.addAction(self.actionSetAsROI)
bar.addSeparator()
bar.addAction(self.actionSelectChannels)
bar.addSeparator()
bar.addAction(self.actionCustomRange)
bar.addWidget(self.rangeFrom)
bar.addWidget(QLabel(' to '))
bar.addWidget(self.rangeTo)
bar.addSeparator()
bar.addAction(self.actionOverviewMode)
bar.addAction(self.actionPhaseMode)
bar.addAction(self.actionContrastMode)
return [bar]
def createPanelToolbar(self):
bar = QToolBar('Editor')
bar.addAction(self.actionNew)
bar.addAction(self.actionOpen)
bar.addAction(self.actionSave)
bar.addSeparator()
bar.addAction(self.actionPrint)
bar.addSeparator()
bar.addAction(self.actionUndo)
bar.addAction(self.actionRedo)
bar.addSeparator()
bar.addAction(self.actionCut)
bar.addAction(self.actionCopy)
bar.addAction(self.actionPaste)
bar.addSeparator()
bar.addAction(self.actionSimulate)
bar.addAction(self.actionRun)
bar.addAction(self.actionGet)
bar.addAction(self.actionUpdate)
showToolText(bar, self.actionSimulate)
showToolText(bar, self.actionRun)
showToolText(bar, self.actionGet)
showToolText(bar, self.actionUpdate)
return bar
def getToolbars(self):
if not self.bars:
bar = QToolBar('Scans')
bar.addAction(self.actionSavePlot)
bar.addAction(self.actionPrint)
bar.addSeparator()
bar.addAction(self.actionXAxis)
bar.addAction(self.actionYAxis)
bar.addAction(self.actionNormalized)
bar.addSeparator()
bar.addAction(self.actionLogXScale)
bar.addAction(self.actionLogScale)
bar.addAction(self.actionUnzoom)
bar.addSeparator()
bar.addAction(self.actionAutoScale)
bar.addAction(self.actionScaleX)
bar.addAction(self.actionScaleY)
bar.addAction(self.actionLegend)
bar.addAction(self.actionErrors)
bar.addAction(self.actionResetPlot)
bar.addAction(self.actionDeletePlot)
bar.addSeparator()
bar.addAction(self.actionAutoDisplay)
bar.addAction(self.actionCombine)
fitbar = QToolBar('Scan fitting')
fitbar.addAction(self.actionFitPeak)
wa = QWidgetAction(fitbar)
self.fitPickCheckbox = QCheckBox(fitbar)
self.fitPickCheckbox.setText('Pick')
self.fitPickCheckbox.setChecked(True)
self.actionPickInitial.setChecked(True)
self.fitPickCheckbox.toggled.connect(self.actionPickInitial.setChecked)
self.actionPickInitial.toggled.connect(self.fitPickCheckbox.setChecked)
layout = QHBoxLayout()
layout.setContentsMargins(10, 0, 10, 0)
layout.addWidget(self.fitPickCheckbox)
frame = QFrame(fitbar)
frame.setLayout(layout)
wa.setDefaultWidget(frame)
fitbar.addAction(wa)
ag = QActionGroup(fitbar)
ag.addAction(self.actionFitPeakGaussian)
ag.addAction(self.actionFitPeakLorentzian)
ag.addAction(self.actionFitPeakPV)
ag.addAction(self.actionFitPeakPVII)
ag.addAction(self.actionFitTc)
ag.addAction(self.actionFitCosine)
ag.addAction(self.actionFitSigmoid)
ag.addAction(self.actionFitLinear)
ag.addAction(self.actionFitExponential)
wa = QWidgetAction(fitbar)
self.fitComboBox = QComboBox(fitbar)
for a in ag.actions():
itemtext = a.text().replace('&', '')
self.fitComboBox.addItem(itemtext)
self.fitfuncmap[itemtext] = a
self.fitComboBox.currentIndexChanged.connect(
self.on_fitComboBox_currentIndexChanged)
wa.setDefaultWidget(self.fitComboBox)
fitbar.addAction(wa)
fitbar.addSeparator()
fitbar.addAction(self.actionFitArby)
self.bars = [bar, fitbar]
return self.bars
def getToolbars(self):
if not self.bar:
bar = QToolBar('History viewer')
bar.addAction(self.actionNew)
bar.addAction(self.actionEditView)
bar.addSeparator()
bar.addAction(self.actionSavePlot)
bar.addAction(self.actionPrint)
bar.addAction(self.actionSaveData)
bar.addSeparator()
bar.addAction(self.actionUnzoom)
bar.addAction(self.actionLogScale)
bar.addSeparator()
bar.addAction(self.actionAutoScale)
bar.addAction(self.actionScaleX)
bar.addAction(self.actionScaleY)
bar.addSeparator()
bar.addAction(self.actionResetView)
bar.addAction(self.actionDeleteView)
bar.addSeparator()
bar.addAction(self.actionFitPeak)
wa = QWidgetAction(bar)
self.fitPickCheckbox = QCheckBox(bar)
self.fitPickCheckbox.setText('Pick')
self.fitPickCheckbox.setChecked(True)
self.actionPickInitial.setChecked(True)
self.fitPickCheckbox.toggled.connect(
self.actionPickInitial.setChecked)
self.actionPickInitial.toggled.connect(
self.fitPickCheckbox.setChecked)
layout = QHBoxLayout()
layout.setContentsMargins(10, 0, 10, 0)
layout.addWidget(self.fitPickCheckbox)
frame = QFrame(bar)
frame.setLayout(layout)
wa.setDefaultWidget(frame)
bar.addAction(wa)
ag = QActionGroup(bar)
ag.addAction(self.actionFitPeakGaussian)
ag.addAction(self.actionFitPeakLorentzian)
ag.addAction(self.actionFitPeakPV)
ag.addAction(self.actionFitPeakPVII)
ag.addAction(self.actionFitTc)
ag.addAction(self.actionFitCosine)
ag.addAction(self.actionFitSigmoid)
ag.addAction(self.actionFitLinear)
ag.addAction(self.actionFitExponential)
wa = QWidgetAction(bar)
self.fitComboBox = QComboBox(bar)
for a in ag.actions():
itemtext = a.text().replace('&', '')
self.fitComboBox.addItem(itemtext)
self.fitfuncmap[itemtext] = a
self.fitComboBox.currentIndexChanged.connect(
self.on__fitComboBox_currentIndexChanged)
wa.setDefaultWidget(self.fitComboBox)
bar.addAction(wa)
bar.addSeparator()
bar.addAction(self.actionFitArby)
self.bar = bar
self.actionFitLinear.trigger()
return [self.bar]
class LiveDataPanel(Panel):
"""Provides a generic "detector live view".
For most instruments, a specific panel must be implemented that takes care
of the individual live display needs.
Options:
* ``instrument`` -- the instrument name that is passed on to the livewidget
module.
* ``filetypes`` default[] - List of filename extensions whose content should
be displayed.
* ``detectors`` (default [] - list of detector devices whose data should be
displayed. If not set data from all configured detectors will be shown.
* ``cachesize`` (default 20) - Number of entries in the live data cache.
The live data cache allows to display of previous taken data.
"""
panelName = 'Live data view'
def __init__(self, parent, client, options):
Panel.__init__(self, parent, client, options)
loadUi(self, 'panels/live.ui')
self._allowed_tags = set()
self._allowed_detectors = set()
self._ignore_livedata = False # ignore livedata, e.g. wrong detector
self._last_idx = 0
self._last_tag = None
self._last_fnames = None
self._last_format = None
self._runtime = 0
self._range_active = False
self._cachesize = 20
self._livewidgets = {} # livewidgets for rois: roi_key -> widget
self._fileopen_filter = None
self.widget = None
self.menu = None
self.statusBar = QStatusBar(self, sizeGripEnabled=False)
policy = self.statusBar.sizePolicy()
policy.setVerticalPolicy(QSizePolicy.Fixed)
self.statusBar.setSizePolicy(policy)
self.statusBar.setSizeGripEnabled(False)
self.layout().addWidget(self.statusBar)
self.toolbar = QToolBar('Live data')
self.toolbar.addAction(self.actionOpen)
self.toolbar.addAction(self.actionPrint)
self.toolbar.addSeparator()
self.toolbar.addAction(self.actionLogScale)
self.toolbar.addSeparator()
self.toolbar.addAction(self.actionKeepRatio)
self.toolbar.addAction(self.actionUnzoom)
self.toolbar.addAction(self.actionColormap)
self.toolbar.addAction(self.actionMarkCenter)
self.toolbar.addAction(self.actionROI)
self._actions2D = [self.actionROI, self.actionColormap]
self.setControlsEnabled(False)
self.set2DControlsEnabled(False)
# self.widget.setControls(Logscale | MinimumMaximum | BrightnessContrast |
# Integrate | Histogram)
self.liveitems = []
self.setLiveItems(1)
self._livechannel = 0
self.splitter.setSizes([20, 80])
self.splitter.restoreState(self.splitterstate)
if hasattr(self.window(), 'closed'):
self.window().closed.connect(self.on_closed)
client.livedata.connect(self.on_client_livedata)
client.liveparams.connect(self.on_client_liveparams)
client.connected.connect(self.on_client_connected)
client.cache.connect(self.on_cache)
self.rois = {}
self.detectorskey = None
# configure instrument specific behavior
self._instrument = options.get('instrument', '')
# self.widget.setInstrumentOption(self._instrument)
# if self._instrument == 'toftof':
# self.widget.setAxisLabels('time channels', 'detectors')
# elif self._instrument == 'imaging':
# self.widget.setControls(ShowGrid | Logscale | Grayscale |
# Normalize | Darkfield | Despeckle |
# CreateProfile | Histogram | MinimumMaximum)
# self.widget.setStandardColorMap(True, False)
# configure allowed file types
supported_filetypes = ReaderRegistry.filetypes()
opt_filetypes = set(options.get('filetypes', supported_filetypes))
self._allowed_tags = opt_filetypes & set(supported_filetypes)
# configure allowed detector device names
detectors = options.get('detectors')
if detectors:
self._allowed_detectors = set(detectors)
# configure caching
self._cachesize = options.get('cachesize', self._cachesize)
if self._cachesize < 1:
self._cachesize = 1 # always cache the last live image
self._datacache = BoundedOrderedDict(maxlen=self._cachesize)
def setLiveItems(self, n):
nitems = len(self.liveitems)
if n < nitems:
nfiles = self.fileList.count()
for i in range(nitems - 1, n - 1, -1):
self.liveitems.pop(i)
self.fileList.takeItem(nfiles - nitems + i)
if self._livechannel > n:
self._livechannel = 0 if n > 0 else None
else:
for i in range(nitems, n):
item = QListWidgetItem('<Live #%d>' % (i + 1))
item.setData(FILENAME, i)
item.setData(FILEFORMAT, '')
item.setData(FILETAG, 'live')
self.fileList.insertItem(self.fileList.count(), item)
self.liveitems.append(item)
if n == 1:
self.liveitems[0].setText('<Live>')
else:
self.liveitems[0].setText('<Live #1>')
def set2DControlsEnabled(self, flag):
if flag != self.actionKeepRatio.isChecked():
self.actionKeepRatio.trigger()
for action in self._actions2D:
action.setVisible(flag)
def setControlsEnabled(self, flag):
for action in self.toolbar.actions():
action.setEnabled(flag)
self.actionOpen.setEnabled(True) # File Open action always available
def initLiveWidget(self, widgetcls):
if isinstance(self.widget, widgetcls):
return
if self.widget:
self.widgetLayout.removeWidget(self.widget)
self.widget.deleteLater()
self.widget = widgetcls(self)
# enable/disable controls and set defaults for new livewidget instances
self.setControlsEnabled(True)
if isinstance(self.widget, LiveWidget1D):
self.set2DControlsEnabled(False)
else:
self.set2DControlsEnabled(True)
# apply current settings
self.widget.setCenterMark(self.actionMarkCenter.isChecked())
self.widget.logscale(self.actionLogScale.isChecked())
guiConn = GUIConnector(self.widget.gr)
guiConn.connect(MouseEvent.MOUSE_MOVE, self.on_mousemove_gr)
self.menuColormap = QMenu(self)
self.actionsColormap = QActionGroup(self)
activeMap = self.widget.getColormap()
activeCaption = None
for name, value in iteritems(COLORMAPS):
caption = name.title()
action = self.menuColormap.addAction(caption)
action.setData(caption)
action.setCheckable(True)
if activeMap == value:
action.setChecked(True)
# update toolButton text later otherwise this may fail
# depending on the setup and qt versions in use
activeCaption = caption
self.actionsColormap.addAction(action)
action.triggered.connect(self.on_colormap_triggered)
self.actionColormap.setMenu(self.menuColormap)
self.widgetLayout.addWidget(self.widget)
if activeCaption:
self.toolbar.widgetForAction(
self.actionColormap).setText(activeCaption)
detectors = self.client.eval('session.experiment.detectors', [])
self._register_rois(detectors)
def loadSettings(self, settings):
self.splitterstate = settings.value('splitter', '', QByteArray)
def saveSettings(self, settings):
settings.setValue('splitter', self.splitter.saveState())
settings.setValue('geometry', self.saveGeometry())
def getMenus(self):
if not self.menu:
menu = QMenu('&Live data', self)
menu.addAction(self.actionOpen)
menu.addAction(self.actionPrint)
menu.addSeparator()
menu.addAction(self.actionKeepRatio)
menu.addAction(self.actionUnzoom)
menu.addAction(self.actionLogScale)
menu.addAction(self.actionColormap)
menu.addAction(self.actionMarkCenter)
menu.addAction(self.actionROI)
self.menu = menu
return [self.menu]
def _get_all_widgets(self):
yield self.widget
for w in itervalues(self._livewidgets):
yield w
def getToolbars(self):
return [self.toolbar]
def on_mousemove_gr(self, event):
xyz = None
if event.getWindow(): # inside plot
xyz = self.widget.getZValue(event)
if xyz:
fmt = '(%g, %g)' # x, y data 1D integral plots
if len(xyz) == 3:
fmt += ': %g' # x, y, z data for 2D image plot
self.statusBar.showMessage(fmt % xyz)
else:
self.statusBar.clearMessage()
def on_actionColormap_triggered(self):
w = self.toolbar.widgetForAction(self.actionColormap)
m = self.actionColormap.menu()
if m:
m.popup(w.mapToGlobal(QPoint(0, w.height())))
def on_colormap_triggered(self):
action = self.actionsColormap.checkedAction()
name = action.data()
for widget in self._get_all_widgets():
widget.setColormap(COLORMAPS[name.upper()])
self.toolbar.widgetForAction(self.actionColormap).setText(name.title())
def _getLiveWidget(self, roi):
return self._livewidgets.get(roi + '/roi', None)
def showRoiWindow(self, roikey):
key = roikey + '/roi'
widget = self._getLiveWidget(roikey)
region = self.widget._rois[key]
if not widget:
widget = LiveWidget(None)
widget.setWindowTitle(roikey)
widget.setColormap(self.widget.getColormap())
widget.setCenterMark(self.actionMarkCenter.isChecked())
widget.logscale(self.actionLogScale.isChecked())
widget.gr.setAdjustSelection(False) # don't use adjust on ROIs
for name, roi in iteritems(self.rois):
widget.setROI(name, roi)
width = max(region.x) - min(region.x)
height = max(region.y) - min(region.y)
if width > height:
dwidth = 500
dheight = 500 * height // width
else:
dheight = 500
dwidth = 500 * width // height
widget.resize(dwidth, dheight)
widget.closed.connect(self.on_roiWindowClosed)
widget.setWindowForRoi(region)
widget.update()
widget.show()
widget.activateWindow()
self._livewidgets[key] = widget
def closeRoiWindow(self, roi):
widget = self._getLiveWidget(roi)
if widget:
widget.close()
def on_closed(self):
for w in self._livewidgets.values():
w.close()
def _register_rois(self, detectors):
self.rois.clear()
self.actionROI.setVisible(False)
self.menuROI = QMenu(self)
self.actionsROI = QActionGroup(self)
self.actionsROI.setExclusive(False)
for detname in detectors:
self.log.debug('checking rois for detector \'%s\'', detname)
for tup in self.client.eval(detname + '.postprocess', ''):
roi = tup[0]
cachekey = roi + '/roi'
# check whether or not this is a roi (cachekey exists).
keyval = self.client.getCacheKey(cachekey)
if keyval:
self.on_roiChange(cachekey, keyval[1])
self.log.debug('register roi: %s', roi)
# create roi menu
action = self.menuROI.addAction(roi)
action.setData(roi)
action.setCheckable(True)
self.actionsROI.addAction(action)
action.triggered.connect(self.on_roi_triggered)
self.actionROI.setMenu(self.menuROI)
self.actionROI.setVisible(True)
def on_actionROI_triggered(self):
w = self.toolbar.widgetForAction(self.actionROI)
self.actionROI.menu().popup(w.mapToGlobal(QPoint(0, w.height())))
def on_roi_triggered(self):
action = self.sender()
roi = action.data()
if action.isChecked():
self.showRoiWindow(roi)
else:
self.closeRoiWindow(roi)
def on_roiWindowClosed(self):
widget = self.sender()
if widget:
key = None
for key, w in iteritems(self._livewidgets):
if w == widget:
self.log.debug('delete roi: %s', key)
del self._livewidgets[key]
break
if key:
roi = key.rsplit('/', 1)[0]
for action in self.actionsROI.actions():
if action.data() == roi:
action.setChecked(False)
self.log.debug('uncheck roi: %s', roi)
def on_roiChange(self, key, value):
self.log.debug('on_roiChange: %s %s', key, (value, ))
self.rois[key] = value
for widget in self._get_all_widgets():
widget.setROI(key, value)
widget = self._livewidgets.get(key, None)
if widget:
widget.setWindowForRoi(self.widget._rois[key])
def on_cache(self, data):
_time, key, _op, svalue = data
try:
value = cache_load(svalue)
except ValueError:
value = None
if key in self.rois:
self.on_roiChange(key, value)
elif key == self.detectorskey and self.widget:
self._register_rois(value)
def on_client_connected(self):
self.client.tell('eventunmask', ['livedata', 'liveparams'])
datapath = self.client.eval('session.experiment.datapath', '')
if not datapath or not path.isdir(datapath):
return
if self._instrument == 'imaging':
for fn in sorted(os.listdir(datapath)):
if fn.endswith('.fits'):
self.add_to_flist(path.join(datapath, fn), '', 'fits',
False)
self.detectorskey = (self.client.eval('session.experiment.name') +
'/detlist').lower()
def on_client_liveparams(self, params):
tag, uid, det, fname, dtype, nx, ny, nz, runtime = params
# TODO: remove compatibility code
if isinstance(fname, string_types):
fname, nx, ny, nz = [fname], [nx], [ny], [nz]
if self._allowed_detectors and det not in self._allowed_detectors:
self._ignore_livedata = True
return
self._ignore_livedata = False
self._runtime = runtime
self._last_uid = uid
if dtype:
self.setLiveItems(len(fname))
self._last_fnames = None
normalized_type = numpy.dtype(dtype).str
if normalized_type not in DATATYPES:
self._last_format = None
self.log.warning('Unsupported live data format: %s',
(params, ))
return
self._last_format = normalized_type
elif fname:
self._last_fnames = fname
self._last_format = None
self._last_tag = tag.lower()
self._nx = nx
self._ny = ny
self._nz = nz
self._last_idx = 0
def _initLiveWidget(self, array):
"""Initialize livewidget based on array's shape"""
if len(array.shape) == 1:
widgetcls = LiveWidget1D
else:
widgetcls = IntegralLiveWidget
self.initLiveWidget(widgetcls)
def setData(self, array, uid=None, display=True):
"""Dispatch data array to corresponding live widgets.
Cache array based on uid parameter. No caching if uid is ``None``.
"""
if uid:
if uid not in self._datacache:
self.log.debug('add to cache: %s', uid)
self._datacache[uid] = array
if display:
self._initLiveWidget(array)
for widget in self._get_all_widgets():
widget.setData(array)
def setDataFromFile(self, filename, tag, uid=None, display=True):
"""Load data array from file and dispatch to live widgets using
``setData``. Do not use caching if uid is ``None``.
"""
try:
array = ReaderRegistry.getReaderCls(tag).fromfile(filename)
except KeyError:
raise NicosError('Unsupported fileformat %r' % tag)
if array is not None:
self.setData(array, uid, display=display)
else:
raise NicosError('Cannot read file %r' % filename)
def on_client_livedata(self, data):
if self._ignore_livedata: # ignore all live events
return
idx = self._last_idx # 0 <= array number < n
self._last_idx += 1
# check for allowed tags but always allow live data
if self._last_tag in self._allowed_tags or self._last_tag == 'live':
# pylint: disable=len-as-condition
if len(data) and self._last_format:
# we got live data with a specified format
uid = str(self._last_uid) + '-' + str(idx)
array = numpy.frombuffer(data, self._last_format)
if self._nz[idx] > 1:
array = array.reshape(
(self._nz[idx], self._ny[idx], self._nx[idx]))
elif self._ny[idx] > 1:
array = array.reshape((self._ny[idx], self._nx[idx]))
# update display for selected live channel, just cache
# otherwise
self.setData(array, uid, display=(idx == self._livechannel))
self.liveitems[idx].setData(FILEUID, uid)
else:
# we got no live data, but a filename with the data
# filename corresponds to full qualififed path here
for i, filename in enumerate(self._last_fnames):
uid = str(self._last_uid) + '-' + str(i)
self.add_to_flist(filename, self._last_format,
self._last_tag, uid)
try:
# update display for selected live channel, just cache
# otherwise
self.setDataFromFile(filename,
self._last_tag,
uid,
display=(i == self._livechannel))
except Exception as e:
if uid in self._datacache:
# image is already cached
# suppress error message for cached image
self.log.debug(e)
else:
# image is not cached and could not be loaded
self.log.exception(e)
def remove_obsolete_cached_files(self):
"""Removes outdated cached files from the file list or set cached flag
to False if the file is still available on the filesystem.
"""
cached_item_rows = []
for row in range(self.fileList.count()):
item = self.fileList.item(row)
if item.data(FILEUID):
cached_item_rows.append(row)
if len(cached_item_rows) > self._cachesize:
for row in cached_item_rows[0:-self._cachesize]:
item = self.fileList.item(row)
self.log.debug('remove from cache %s %s', item.data(FILEUID),
item.data(FILENAME))
if path.isfile(item.data(FILENAME)):
item.setData(FILEUID, None)
else:
self.fileList.takeItem(row)
def add_to_flist(self, filename, fformat, ftag, uid=None, scroll=True):
shortname = path.basename(filename)
item = QListWidgetItem(shortname)
item.setData(FILENAME, filename)
item.setData(FILEFORMAT, fformat)
item.setData(FILETAG, ftag)
item.setData(FILEUID, uid)
self.fileList.insertItem(self.fileList.count() - len(self.liveitems),
item)
if uid:
self.remove_obsolete_cached_files()
if scroll:
self.fileList.scrollToBottom()
return item
def on_fileList_itemClicked(self, item):
if item is None:
return
fname = item.data(FILENAME)
ftag = item.data(FILETAG)
if item in self.liveitems and ftag == 'live': # show live image
self._livechannel = int(fname)
fname = None
self.log.debug("set livechannel: %d", self._livechannel)
else:
self._livechannel = None
self.log.debug("no direct display")
uid = item.data(FILEUID)
if uid: # show image from cache
array = self._datacache.get(uid, None)
if array is not None and array.size:
self.setData(array)
return
if fname:
# show image from file
self.setDataFromFile(fname, ftag)
def on_fileList_currentItemChanged(self, item, previous):
self.on_fileList_itemClicked(item)
@pyqtSlot()
def on_actionOpen_triggered(self):
"""Open image file using registered reader classes."""
ftypes = {
ffilter: ftype
for ftype, ffilter in ReaderRegistry.filefilters()
}
fdialog = FileFilterDialog(self, "Open data files", "",
";;".join(ftypes.keys()))
if self._fileopen_filter:
fdialog.selectNameFilter(self._fileopen_filter)
if fdialog.exec_() == fdialog.Accepted:
self._fileopen_filter = fdialog.selectedNameFilter()
tag = ftypes[self._fileopen_filter]
files = fdialog.selectedFiles()
if files:
def _cacheFile(fn, tag):
uid = uuid4()
# setDataFromFile may raise an `NicosException`, e.g.
# if the file cannot be opened.
self.setDataFromFile(fn, tag, uid, display=False)
return self.add_to_flist(fn, None, tag, uid)
# load and display first item
f = files.pop(0)
self.fileList.setCurrentItem(_cacheFile(f, tag))
cachesize = self._cachesize - 1
# add first `cachesize` files to cache
for _, f in enumerateWithProgress(files[:cachesize],
"Loading data files...",
parent=fdialog):
_cacheFile(f, tag)
# add further files to file list (open on request/itemClicked)
for f in files[cachesize:]:
self.add_to_flist(f, None, tag)
@pyqtSlot()
def on_actionUnzoom_triggered(self):
self.widget.unzoom()
@pyqtSlot()
def on_actionPrint_triggered(self):
self.widget.printDialog()
@pyqtSlot()
def on_actionLogScale_triggered(self):
for widget in self._get_all_widgets():
widget.logscale(self.actionLogScale.isChecked())
@pyqtSlot()
def on_actionMarkCenter_triggered(self):
flag = self.actionMarkCenter.isChecked()
for widget in self._get_all_widgets():
widget.setCenterMark(flag)
@pyqtSlot()
def on_actionKeepRatio_triggered(self):
self.widget.gr.setAdjustSelection(self.actionKeepRatio.isChecked())
class LiveDataPanel(Panel):
"""Provides a generic "detector live view".
For most instruments, a specific panel must be implemented that takes care
of the individual live display needs.
Options:
* ``filetypes`` (default []) - List of filename extensions whose content
should be displayed.
* ``detectors`` (default []) - List of detector devices whose data should
be displayed. If not set data from all configured detectors will be
shown.
* ``cachesize`` (default 20) - Number of entries in the live data cache.
The live data cache allows displaying of previously measured data.
* ``liveonlyindex`` (default None) - Enable live only view. This disables
interaction with the liveDataPanel and only displays the dataset of the
set index.
* ``defaults`` (default []) - List of strings representing options to be
set for every configured plot.
These options can not be set on a per plot basis since they are global.
Options are as follows:
* ``logscale`` - Switch the logarithic scale on.
* ``center`` - Display the center lines for the image.
* ``nolines`` - Display lines for the curve.
* ``markers`` - Display symbols for data points.
* ``unzoom`` - Unzoom the plot when new data is received.
* ``plotsettings`` (default []) - List of dictionaries which contain
settings for the individual datasets.
Each entry will be applied to one of the detector's datasets.
* ``plotcount`` (default 1) - Amount of plots in the dataset.
* ``marks`` (default 'omark') - Shape of the markers (if displayed).
Possible values are:
'dot', 'plus', 'asterrisk', 'circle', 'diagonalcross', 'solidcircle',
'triangleup', 'solidtriangleup', 'triangledown', 'solidtriangledown',
'square', 'solidsquare', 'bowtie', 'solidbowtie', 'hourglass',
'solidhourglass', 'diamond', 'soliddiamond', 'star', 'solidstar',
'triupdown', 'solidtriright', 'solidtrileft', 'hollowplus',
'solidplus', 'pentagon', 'hexagon', 'heptagon', 'octagon', 'star4',
'star5', 'star6', 'star7', 'star8', 'vline', 'hline', 'omark'
* ``markersize`` (default 1) - Size of the markers (if displayed).
* ``offset`` (default 0) - Offset for the X axis labels of
each curve in 1D plots.
* ``colors`` (default ['blue']) - Color of the marks and lines
(if displayed).
If colors are set as a list the colors will be applied to the
individual plots (and default back to blue when wrong/missing),
for example:
['red', 'green']: The first plot will be red, the second green and
the others will be blue (default).
'red': all plots will be red.
"""
panelName = 'Live data view'
ui = f'{uipath}/panels/live.ui'
def __init__(self, parent, client, options):
Panel.__init__(self, parent, client, options)
loadUi(self, self.ui)
self._allowed_filetypes = set()
self._allowed_detectors = set()
self._runtime = 0
self._range_active = False
self._cachesize = 20
self._livewidgets = {} # livewidgets for rois: roi_key -> widget
self._fileopen_filter = None
self.widget = None
self.menu = None
self.unzoom = False
self.lastSettingsIndex = None
self._axis_labels = {}
self.params = {}
self._offset = 0
self.statusBar = QStatusBar(self, sizeGripEnabled=False)
policy = self.statusBar.sizePolicy()
policy.setVerticalPolicy(QSizePolicy.Fixed)
self.statusBar.setSizePolicy(policy)
self.statusBar.setSizeGripEnabled(False)
self.layout().addWidget(self.statusBar)
self.toolbar = QToolBar('Live data')
self.toolbar.addAction(self.actionOpen)
self.toolbar.addAction(self.actionPrint)
self.toolbar.addAction(self.actionSavePlot)
self.toolbar.addSeparator()
self.toolbar.addAction(self.actionLogScale)
self.toolbar.addSeparator()
self.toolbar.addAction(self.actionKeepRatio)
self.toolbar.addAction(self.actionUnzoom)
self.toolbar.addAction(self.actionColormap)
self.toolbar.addAction(self.actionMarkCenter)
self.toolbar.addAction(self.actionROI)
self._actions2D = [self.actionROI, self.actionColormap]
self.setControlsEnabled(False)
self.set2DControlsEnabled(False)
# hide fileselection in liveonly mode
self._liveOnlyIndex = options.get('liveonlyindex', None)
if self._liveOnlyIndex is not None:
self.pastFilesWidget.hide()
self.statusBar.hide()
# disable interactions with the plot
self.setAttribute(Qt.WA_TransparentForMouseEvents)
self.liveitems = []
self.setLiveItems(1)
self._livechannel = 0
self.splitter.setSizes([20, 80])
self.splitter.restoreState(self.splitterstate)
if hasattr(self.window(), 'closed'):
self.window().closed.connect(self.on_closed)
client.livedata.connect(self.on_client_livedata)
client.connected.connect(self.on_client_connected)
client.cache.connect(self.on_cache)
self.rois = {}
self.detectorskey = None
# configure allowed file types
supported_filetypes = ReaderRegistry.filetypes()
opt_filetypes = set(options.get('filetypes', supported_filetypes))
self._allowed_filetypes = opt_filetypes & set(supported_filetypes)
# configure allowed detector device names
detectors = options.get('detectors')
if detectors:
self._allowed_detectors = set(detectors)
defaults = options.get('defaults', [])
if 'logscale' in defaults:
self.actionLogScale.setChecked(True)
if 'center' in defaults:
self.actionMarkCenter.setChecked(True)
if 'nolines' not in defaults:
self.actionLines.setChecked(True)
if 'markers' in defaults:
self.actionSymbols.setChecked(True)
if 'unzoom' in defaults:
self.unzoom = True
self.plotsettings = options.get('plotsettings', [DEFAULTS])
# configure caching
self._cachesize = options.get('cachesize', self._cachesize)
if self._cachesize < 1 or self._liveOnlyIndex is not None:
self._cachesize = 1 # always cache the last live image
self._datacache = BoundedOrderedDict(maxlen=self._cachesize)
self._initControlsGUI()
def _initControlsGUI(self):
pass
def setLiveItems(self, n):
nitems = len(self.liveitems)
if n < nitems:
nfiles = self.fileList.count()
for i in range(nitems - 1, n - 1, -1):
self.liveitems.pop(i)
self.fileList.takeItem(nfiles - nitems + i)
if self._livechannel > n:
self._livechannel = 0 if n > 0 else None
else:
for i in range(nitems, n):
item = QListWidgetItem('<Live #%d>' % (i + 1))
item.setData(FILENAME, i)
item.setData(FILETYPE, '')
item.setData(FILETAG, LIVE)
self.fileList.insertItem(self.fileList.count(), item)
self.liveitems.append(item)
if self._liveOnlyIndex is not None:
self.fileList.setCurrentRow(self._liveOnlyIndex)
if n == 1:
self.liveitems[0].setText('<Live>')
else:
self.liveitems[0].setText('<Live #1>')
def set2DControlsEnabled(self, flag):
if flag != self.actionKeepRatio.isChecked():
self.actionKeepRatio.trigger()
for action in self._actions2D:
action.setVisible(flag)
def setControlsEnabled(self, flag):
for action in self.toolbar.actions():
action.setEnabled(flag)
self.actionOpen.setEnabled(True) # File Open action always available
def initLiveWidget(self, widgetcls):
if isinstance(self.widget, widgetcls):
return
# delete the old widget
if self.widget:
self.widgetLayout.removeWidget(self.widget)
self.widget.deleteLater()
# create a new one
self.widget = widgetcls(self)
# enable/disable controls and set defaults for new livewidget instances
self.setControlsEnabled(True)
if isinstance(self.widget, LiveWidget1D):
self.set2DControlsEnabled(False)
else:
self.set2DControlsEnabled(True)
# apply current global settings
self.widget.setCenterMark(self.actionMarkCenter.isChecked())
self.widget.logscale(self.actionLogScale.isChecked())
if isinstance(self.widget, LiveWidget1D):
self.widget.setSymbols(self.actionSymbols.isChecked())
self.widget.setLines(self.actionLines.isChecked())
# liveonly mode does not display a status bar
if self._liveOnlyIndex is None:
self.widget.gr.cbm.addHandler(MouseEvent.MOUSE_MOVE,
self.on_mousemove_gr)
# handle menus
self.menuColormap = QMenu(self)
self.actionsColormap = QActionGroup(self)
activeMap = self.widget.getColormap()
activeCaption = None
for name, value in COLORMAPS.items():
caption = name.title()
action = self.menuColormap.addAction(caption)
action.setData(caption)
action.setCheckable(True)
if activeMap == value:
action.setChecked(True)
# update toolButton text later otherwise this may fail
# depending on the setup and qt versions in use
activeCaption = caption
self.actionsColormap.addAction(action)
action.triggered.connect(self.on_colormap_triggered)
self.actionColormap.setMenu(self.menuColormap)
# finish initiation
self.widgetLayout.addWidget(self.widget)
if activeCaption:
self.toolbar.widgetForAction(
self.actionColormap).setText(activeCaption)
detectors = self.client.eval('session.experiment.detectors', [])
self._register_rois(detectors)
def loadSettings(self, settings):
self.splitterstate = settings.value('splitter', '', QByteArray)
def saveSettings(self, settings):
settings.setValue('splitter', self.splitter.saveState())
settings.setValue('geometry', self.saveGeometry())
def getMenus(self):
if self._liveOnlyIndex is not None:
return []
if not self.menu:
menu = QMenu('&Live data', self)
menu.addAction(self.actionOpen)
menu.addAction(self.actionPrint)
menu.addAction(self.actionSavePlot)
menu.addSeparator()
menu.addAction(self.actionKeepRatio)
menu.addAction(self.actionUnzoom)
menu.addAction(self.actionLogScale)
menu.addAction(self.actionColormap)
menu.addAction(self.actionMarkCenter)
menu.addAction(self.actionROI)
menu.addAction(self.actionSymbols)
menu.addAction(self.actionLines)
self.menu = menu
return [self.menu]
def _get_all_widgets(self):
yield self.widget
yield from self._livewidgets.values()
def getToolbars(self):
if self._liveOnlyIndex is not None:
return []
return [self.toolbar]
def on_mousemove_gr(self, event):
xyz = None
if event.getWindow(): # inside plot
xyz = self.widget.getZValue(event)
if xyz:
fmt = '(%g, %g)' # x, y data 1D integral plots
if len(xyz) == 3:
fmt += ': %g' # x, y, z data for 2D image plot
self.statusBar.showMessage(fmt % xyz)
else:
self.statusBar.clearMessage()
def on_actionColormap_triggered(self):
w = self.toolbar.widgetForAction(self.actionColormap)
m = self.actionColormap.menu()
if m:
m.popup(w.mapToGlobal(QPoint(0, w.height())))
def on_colormap_triggered(self):
action = self.actionsColormap.checkedAction()
name = action.data()
for widget in self._get_all_widgets():
widget.setColormap(COLORMAPS[name.upper()])
self.toolbar.widgetForAction(self.actionColormap).setText(name.title())
@pyqtSlot()
def on_actionLines_triggered(self):
if self.widget and isinstance(self.widget, LiveWidget1D):
self.widget.setLines(self.actionLines.isChecked())
@pyqtSlot()
def on_actionSymbols_triggered(self):
if self.widget and isinstance(self.widget, LiveWidget1D):
self.widget.setSymbols(self.actionSymbols.isChecked())
def _getLiveWidget(self, roi):
return self._livewidgets.get(roi + '/roi', None)
def showRoiWindow(self, roikey):
key = roikey + '/roi'
widget = self._getLiveWidget(roikey)
region = self.widget._rois[key]
if not widget:
widget = LiveWidget(None)
widget.setWindowTitle(roikey)
widget.setColormap(self.widget.getColormap())
widget.setCenterMark(self.actionMarkCenter.isChecked())
widget.logscale(self.actionLogScale.isChecked())
widget.gr.setAdjustSelection(False) # don't use adjust on ROIs
for name, roi in self.rois.items():
widget.setROI(name, roi)
width = max(region.x) - min(region.x)
height = max(region.y) - min(region.y)
if width > height:
dwidth = 500
dheight = 500 * height // width
else:
dheight = 500
dwidth = 500 * width // height
widget.resize(dwidth, dheight)
widget.closed.connect(self.on_roiWindowClosed)
widget.setWindowForRoi(region)
widget.update()
widget.show()
widget.activateWindow()
self._livewidgets[key] = widget
def closeRoiWindow(self, roi):
widget = self._getLiveWidget(roi)
if widget:
widget.close()
def on_closed(self):
for w in self._livewidgets.values():
w.close()
def _register_rois(self, detectors):
self.rois.clear()
self.actionROI.setVisible(False)
self.menuROI = QMenu(self)
self.actionsROI = QActionGroup(self)
self.actionsROI.setExclusive(False)
for detname in detectors:
self.log.debug('checking rois for detector \'%s\'', detname)
for tup in self.client.eval(detname + '.postprocess', ''):
roi = tup[0]
cachekey = roi + '/roi'
# check whether or not this is a roi (cachekey exists).
keyval = self.client.getCacheKey(cachekey)
if keyval:
self.on_roiChange(cachekey, keyval[1])
self.log.debug('register roi: %s', roi)
# create roi menu
action = self.menuROI.addAction(roi)
action.setData(roi)
action.setCheckable(True)
self.actionsROI.addAction(action)
action.triggered.connect(self.on_roi_triggered)
self.actionROI.setMenu(self.menuROI)
self.actionROI.setVisible(True)
def on_actionROI_triggered(self):
w = self.toolbar.widgetForAction(self.actionROI)
self.actionROI.menu().popup(w.mapToGlobal(QPoint(0, w.height())))
def on_roi_triggered(self):
action = self.sender()
roi = action.data()
if action.isChecked():
self.showRoiWindow(roi)
else:
self.closeRoiWindow(roi)
def on_roiWindowClosed(self):
widget = self.sender()
if widget:
key = None
for key, w in self._livewidgets.items():
if w == widget:
self.log.debug('delete roi: %s', key)
del self._livewidgets[key]
break
if key:
roi = key.rsplit('/', 1)[0]
for action in self.actionsROI.actions():
if action.data() == roi:
action.setChecked(False)
self.log.debug('uncheck roi: %s', roi)
def on_roiChange(self, key, value):
self.log.debug('on_roiChange: %s %s', key, (value, ))
self.rois[key] = value
for widget in self._get_all_widgets():
widget.setROI(key, value)
widget = self._livewidgets.get(key, None)
if widget:
widget.setWindowForRoi(self.widget._rois[key])
def on_cache(self, data):
_time, key, _op, svalue = data
try:
value = cache_load(svalue)
except ValueError:
value = None
if key in self.rois:
self.on_roiChange(key, value)
elif key == self.detectorskey and self.widget:
self._register_rois(value)
def on_client_connected(self):
self.client.tell('eventunmask', ['livedata'])
self.detectorskey = (self.client.eval('session.experiment.name') +
'/detlist').lower()
def normalizeType(self, dtype):
normalized_type = numpy.dtype(dtype).str
if normalized_type not in DATATYPES:
self.log.warning('Unsupported live data format: %s',
normalized_type)
return
return normalized_type
def getIndexedUID(self, idx):
return str(self.params['uid']) + '-' + str(idx)
def _process_axis_labels(self, blobs):
"""Convert the raw axis label descriptions.
tuple: `from, to`: Distribute labels equidistantly between the two
values.
numbertype: `index into labels`: Actual labels are provided.
Value is the starting index.
Extract from first available blob.
Remove said blob from list.
None: `default`: Start at 0 with stepwidth 1.
Save the axis labels to the datacache.
"""
CLASSIC = {'define': 'classic'}
for i, datadesc in enumerate(self.params['datadescs']):
labels = {}
titles = {}
for size, axis in zip(reversed(datadesc['shape']), AXES):
# if the 'labels' key does not exist or does not have the right
# axis key set default to 'classic'.
label = datadesc.get('labels', {
'x': CLASSIC,
'y': CLASSIC
}).get(axis, CLASSIC)
if label['define'] == 'range':
start = label.get('start', 0)
size = label.get('length', 1)
step = label.get('step', 1)
end = start + step * size
labels[axis] = numpy.arange(start, end, step)
elif label['define'] == 'array':
index = label.get('index', 0)
labels[axis] = numpy.frombuffer(blobs[index],
label.get('dtype', '<i4'))
else:
labels[axis] = self.getDefaultLabels(size)
labels[axis] += self._offset if axis == 'x' else 0
titles[axis] = label.get('title')
# save the labels in the datacache with uid as key
uid = self.getIndexedUID(i)
if uid not in self._datacache:
self._datacache[uid] = {}
self._datacache[uid]['labels'] = labels
self._datacache[uid]['titles'] = titles
def _process_livedata(self, data, idx):
# ignore irrelevant data in liveOnly mode
if self._liveOnlyIndex is not None and idx != self._liveOnlyIndex:
return
try:
descriptions = self.params['datadescs']
except KeyError:
self.log.warning('Livedata with tag "Live" without '
'"datadescs" provided.')
return
# pylint: disable=len-as-condition
if len(data):
# we got live data with specified formats
arrays = self.processDataArrays(
idx, numpy.frombuffer(data, descriptions[idx]['dtype']))
if arrays is None:
return
# put everything into the cache
uid = self.getIndexedUID(idx)
self._datacache[uid]['dataarrays'] = arrays
self.liveitems[idx].setData(FILEUID, uid)
def _process_filenames(self):
# TODO: allow multiple fileformats?
# would need to modify input from DemonSession.notifyDataFile
number_of_items = self.fileList.count()
for i, filedesc in enumerate(self.params['filedescs']):
uid = self.getIndexedUID(number_of_items + i)
name = filedesc['filename']
filetype = filedesc.get('fileformat')
if filetype is None or filetype not in ReaderRegistry.filetypes():
continue # Ignore unregistered file types
self.add_to_flist(name, filetype, FILE, uid)
try:
# update display for selected live channel,
# just cache otherwise
self.setDataFromFile(name,
filetype,
uid,
display=(i == self._livechannel))
except Exception as e:
if uid in self._datacache:
# image is already cached
# suppress error message for cached image
self.log.debug(e)
else:
# image is not cached and could not be loaded
self.log.exception(e)
def on_client_livedata(self, params, blobs):
# blobs is a list of data blobs and labels blobs
if self._allowed_detectors \
and params['det'] not in self._allowed_detectors:
return
self.params = params
self._runtime = params['time']
if params['tag'] == LIVE:
datacount = len(params['datadescs'])
self.setLiveItems(datacount)
self._process_axis_labels(blobs[datacount:])
for i, blob in enumerate(blobs[:datacount]):
self._process_livedata(blob, i)
if not datacount:
self._process_livedata([], 0)
elif params['tag'] == FILE:
self._process_filenames()
self._show()
def getDefaultLabels(self, size):
return numpy.array(range(size))
def convertLabels(self, labelinput):
"""Convert the input into a processable format"""
for i, entry in enumerate(labelinput):
if isinstance(entry, str):
labelinput[i] = self.normalizeType(entry)
return labelinput
def _initLiveWidget(self, array):
"""Initialize livewidget based on array's shape"""
if len(array.shape) == 1:
widgetcls = LiveWidget1D
else:
widgetcls = IntegralLiveWidget
self.initLiveWidget(widgetcls)
def setDataFromFile(self, filename, filetype, uid=None, display=True):
"""Load data array from file and dispatch to live widgets using
``setData``. Do not use caching if uid is ``None``.
"""
array = readDataFromFile(filename, filetype)
if array is not None:
if uid:
if uid not in self._datacache:
self.log.debug('add to cache: %s', uid)
self._datacache[uid] = {}
self._datacache[uid]['dataarrays'] = [array]
if display:
self._initLiveWidget(array)
for widget in self._get_all_widgets():
widget.setData(array)
# self.setData([array], uid, display=display)
return array.shape
else:
raise NicosError('Cannot read file %r' % filename)
def processDataArrays(self, index, entry):
"""Check if the input 1D array has the expected amount of values.
If the array is too small an Error is raised.
If the size exceeds the expected amount it is truncated.
Returns a list of arrays corresponding to the ``plotcount`` of
``index`` into ``datadescs`` of the current params"""
datadesc = self.params['datadescs'][index]
count = datadesc.get('plotcount', DEFAULTS['plotcount'])
shape = datadesc['shape']
# ignore irrelevant data in liveOnly mode
if self._liveOnlyIndex is not None and index != self._liveOnlyIndex:
return
# determine 1D array size
arraysize = numpy.product(shape)
# check and split the input array
if len(entry) < count * arraysize:
self.log.warning('Expected dataarray with %d entries, got %d',
count * arraysize, len(entry))
return
arrays = numpy.split(entry[:count * arraysize], count)
# reshape every array in the list
for i, array in enumerate(arrays):
arrays[i] = array.reshape(shape)
return arrays
def applyPlotSettings(self):
if not self.widget or not isinstance(self.widget, LiveWidget1D):
return
if self._liveOnlyIndex is not None:
index = self._liveOnlyIndex
elif self.fileList.currentItem() not in self.liveitems:
return
else:
index = self.fileList.currentRow()
if isinstance(self.widget, LiveWidget1D):
def getElement(l, index, default):
try:
return l[index]
except IndexError:
return default
settings = getElement(self.plotsettings, index, DEFAULTS)
if self.params['tag'] == LIVE:
plotcount = self.params['datadescs'][index].get(
'plotcount', DEFAULTS['plotcount'])
else:
plotcount = DEFAULTS['plotcount']
marks = [settings.get('marks', DEFAULTS['marks'])]
markersize = settings.get('markersize', DEFAULTS['markersize'])
offset = settings.get('offset', DEFAULTS['offset'])
colors = settings.get('colors', DEFAULTS['colors'])
if isinstance(colors, list):
if len(colors) > plotcount:
colors = colors[:plotcount]
while len(colors) < plotcount:
colors.append(DEFAULTS['colors'])
else:
colors = [colors] * plotcount
self.setOffset(offset)
self.widget.setMarks(marks)
self.widget.setMarkerSize(markersize)
self.widget.setPlotCount(plotcount, colors)
def setOffset(self, offset):
self._offset = offset
def getDataFromItem(self, item):
"""Extract and return the data associated with the item.
If the data is in the cache return it.
If the data is in a valid file extract it from there.
"""
if item is None:
return
uid = item.data(FILEUID)
# data is cached
if uid and hasattr(self, '_datacache') and uid in self._datacache:
return self._datacache[uid]
# cache has cleared data or data has not been cached in the first place
elif uid is None and item.data(FILETAG) == FILE:
filename = item.data(FILENAME)
filetype = item.data(FILETYPE)
if path.isfile(filename):
rawdata = readDataFromFile(filename, filetype)
labels = {}
titles = {}
for axis, entry in zip(AXES, reversed(rawdata.shape)):
labels[axis] = numpy.arange(entry)
titles[axis] = axis
data = {
'labels': labels,
'titles': titles,
'dataarrays': [rawdata]
}
return data
# else:
# TODO: mark for deletion on item changed?
def _show(self, data=None):
"""Show the provided data. If no data has been provided extract it
from the datacache via the current item's uid.
:param data: dictionary containing 'dataarrays' and 'labels'
"""
idx = self.fileList.currentRow()
if idx == -1:
self.fileList.setCurrentRow(0)
return
# no data has been provided, try to get it from the cache
if data is None:
data = self.getDataFromItem(self.fileList.currentItem())
# still no data
if data is None:
return
arrays = data.get('dataarrays', [])
labels = data.get('labels', {})
titles = data.get('titles', {})
# if multiple datasets have to be displayed in one widget, they have
# the same dimensions, so we only need the dimensions of one set
self._initLiveWidget(arrays[0])
self.applyPlotSettings()
for widget in self._get_all_widgets():
widget.setData(arrays, labels)
widget.setTitles(titles)
if self.unzoom and self.widget:
self.on_actionUnzoom_triggered()
def remove_obsolete_cached_files(self):
"""Remove or flag items which are no longer cached.
The cache will delete items if it's size exceeds ´cachesize´.
This checks the items in the filelist and their caching status,
removing items with deleted associated files and flagging items
with valid files to be reloaded if selected by the user.
"""
for index in reversed(range(self.fileList.count())):
item = self.fileList.item(index)
uid = item.data(FILEUID)
# is the uid still cached
if uid and uid not in self._datacache:
# does the file still exist on the filesystem
if path.isfile(item.data(FILENAME)):
item.setData(FILEUID, None)
else:
self.fileList.takeItem(index)
def add_to_flist(self, filename, filetype, tag, uid=None, scroll=True):
# liveonly mode doesn't display a filelist
if self._liveOnlyIndex is not None:
return
shortname = path.basename(filename)
item = QListWidgetItem(shortname)
item.setData(FILENAME, filename)
item.setData(FILETYPE, filetype)
item.setData(FILETAG, tag)
item.setData(FILEUID, uid)
self.fileList.insertItem(self.fileList.count(), item)
if uid:
self.remove_obsolete_cached_files()
if scroll:
self.fileList.scrollToBottom()
return item
def on_fileList_currentItemChanged(self):
self._show()
@pyqtSlot()
def on_actionOpen_triggered(self):
"""Open image file using registered reader classes."""
ftypes = {
ffilter: ftype
for ftype, ffilter in ReaderRegistry.filefilters()
if not self._allowed_filetypes or ftype in self._allowed_filetypes
}
fdialog = FileFilterDialog(self, "Open data files", "",
";;".join(ftypes.keys()))
if self._fileopen_filter:
fdialog.selectNameFilter(self._fileopen_filter)
if fdialog.exec_() != fdialog.Accepted:
return
files = fdialog.selectedFiles()
if not files:
return
self._fileopen_filter = fdialog.selectedNameFilter()
filetype = ftypes[self._fileopen_filter]
errors = []
def _cacheFile(fn, filetype):
uid = uuid4()
# setDataFromFile may raise an `NicosException`, e.g.
# if the file cannot be opened.
try:
self.setDataFromFile(fn, filetype, uid, display=False)
except Exception as err:
errors.append('%s: %s' % (fn, err))
else:
return self.add_to_flist(fn, filetype, FILE, uid)
# load and display first item
f = files.pop(0)
item = _cacheFile(f, filetype)
if item is not None:
self.fileList.setCurrentItem(item)
cachesize = self._cachesize - 1
# add first `cachesize` files to cache
for _, f in enumerateWithProgress(files[:cachesize],
"Loading data files...",
parent=fdialog):
_cacheFile(f, filetype)
# add further files to file list (open on request/itemClicked)
for f in files[cachesize:]:
self.add_to_flist(f, filetype, FILE)
if errors:
self.showError('Some files could not be opened:\n\n' +
'\n'.join(errors))
@pyqtSlot()
def on_actionUnzoom_triggered(self):
self.widget.unzoom()
@pyqtSlot()
def on_actionPrint_triggered(self):
self.widget.printDialog()
@pyqtSlot()
def on_actionSavePlot_triggered(self):
self.widget.savePlot()
@pyqtSlot()
def on_actionLogScale_triggered(self):
for widget in self._get_all_widgets():
widget.logscale(self.actionLogScale.isChecked())
@pyqtSlot()
def on_actionMarkCenter_triggered(self):
flag = self.actionMarkCenter.isChecked()
for widget in self._get_all_widgets():
widget.setCenterMark(flag)
@pyqtSlot()
def on_actionKeepRatio_triggered(self):
self.widget.gr.setAdjustSelection(self.actionKeepRatio.isChecked())