def closeEvent(self, event):
if self.confirmexit and QMessageBox.question(
self, 'Quit', 'Do you really want to quit?',
QMessageBox.Yes | QMessageBox.No) == QMessageBox.No:
event.ignore()
return
for panel in self.panels:
if not panel.requestClose():
event.ignore()
return
if self.autosavelayout:
self.saveWindowLayout()
with self.sgroup as settings:
self.saveSettings(settings)
for panel in self.panels:
with panel.sgroup as settings:
panel.saveSettings(settings)
for window in list(self.windows.values()):
if not window.close():
event.ignore()
return
if self.helpWindow:
self.helpWindow.close()
if self.client.isconnected:
self.on_actionConnect_triggered(False)
event.accept()
QApplication.instance().quit()
def _handle_table_paste(self):
indices = []
for index in self.tableView.selectedIndexes():
indices.append((index.row(), index.column()))
if not indices:
return
top_left = indices[0]
data_type = QApplication.instance().clipboard().mimeData()
if not data_type.hasText():
# Don't paste images etc.
return
clipboard_text = QApplication.instance().clipboard().text()
copied_table = extract_table_from_clipboard_text(clipboard_text)
if len(copied_table) == 1 and len(copied_table[0]) == 1:
# Only one value, so put it in all selected cells
self._do_bulk_update(copied_table[0][0])
return
self.model.update_data_from_clipboard(
copied_table, top_left, self._get_hidden_column_indices())
def doInit(self, mode):
CICacheClient.doInit(self, self._mode)
self._qtapp = QApplication(sys.argv)
self._qtapp.setOrganizationName('nicos')
self._qtapp.setApplicationName('cacheinspector')
self._window = MainWindow(self)
self._window.setWindowIcon(QIcon(':/inspector'))
session._qthandler.setStatusbar(self._window.statusBar())
def doInit(self, mode):
self._qtapp = QApplication(sys.argv)
self._qtapp.setOrganizationName('nicos')
self._qtapp.setApplicationName('history')
self._window = StandaloneHistoryWindow(self)
# if no cache was given on the command line...
if not self._config['cache']:
dlg = SettingsDialog(self._window)
dlg.exec_()
self._setROParam('cache', dlg.cacheBox.currentText())
self._setROParam('prefix', dlg.prefixEdit.text())
CacheClient.doInit(self, mode)
def waitCursor():
"""Context manager creating an hour glass style cursor for longer-running
blocking tasks inside GUI code. Example::
with waitCursor():
# process takes some time
pass
"""
try:
QApplication.setOverrideCursor(Qt.WaitCursor)
yield
finally:
QApplication.restoreOverrideCursor()
def on_client_connected(self):
# retrieve datasets and put them into the scans window
pd = QProgressDialog(labelText='Transferring datasets, please wait...')
pd.setRange(0, 1)
pd.setCancelButton(None)
pd.show()
QApplication.processEvents()
datasets = self.client.ask('getdataset', '*', default=[])
self.bulk_adding = True
for dataset in (datasets or []):
try:
self.on_client_dataset(dataset)
except Exception:
from nicos.clients.gui.main import log
log.error('Error adding dataset', exc=1)
self.bulk_adding = False
pd.setValue(1)
pd.close()
def event(self, event):
if self._reconfiguring and event.type() == 76: # LayoutRequest
self._reconfiguring = False
# always resize first; works around layout bugs where the full
# screen window is actually made larger than the full screen
self.resize(self.sizeHint())
if self._wantFullScreen:
self.setGeometry(QApplication.screens()[0].geometry())
return QMainWindow.event(self, event)
def on_roiItemClicked(self, event):
if event.getButtons() & MouseEvent.RIGHT_BUTTON:
if isinstance(event.roi.reference, FitResult):
menu = QMenu(self)
actionClipboard = QAction("Copy fit values to clipboard", menu)
menu.addAction(actionClipboard)
p0dc = event.getDC()
selectedItem = menu.exec_(
self.mapToGlobal(QPoint(p0dc.x, p0dc.y)))
if selectedItem == actionClipboard:
res = event.roi.reference
text = '\n'.join(
(n + '\t' if n else '\t') +
(v + '\t' if isinstance(v, string_types) else '%g\t' %
v) +
(dv if isinstance(dv, string_types) else '%g' % dv)
for (n, v, dv) in res.label_contents)
QApplication.clipboard().setText(text)
class StandaloneHistoryApp(CacheClient):
parameters = {
'views':
Param('Strings specifying views (from command line)',
type=listof(str)),
}
def doInit(self, mode):
self._qtapp = QApplication(sys.argv)
self._qtapp.setOrganizationName('nicos')
self._qtapp.setApplicationName('history')
self._window = StandaloneHistoryWindow(self)
# if no cache was given on the command line...
if not self._config['cache']:
dlg = SettingsDialog(self._window)
dlg.exec_()
self._setROParam('cache', dlg.cacheBox.currentText())
self._setROParam('prefix', dlg.prefixEdit.text())
CacheClient.doInit(self, mode)
def getDeviceList(self, only_explicit=True, special_clause=None):
devlist = [
key[:-6] for (key, _) in self.query_db('')
if key.endswith('/value')
]
if special_clause:
devlist = [
dn for dn in devlist if eval(special_clause, {'dn': dn})
]
return sorted(devlist)
def getDeviceParam(self, devname, parname):
return self.get(devname, parname)
def getDeviceParams(self, devname):
ldevname = devname.lower()
index = len(ldevname) + 1
return {
key[index:]: value
for (key, value) in self.query_db('')
if key.startswith(ldevname + '/')
}
def getDeviceParamInfo(self, _):
return {} # we can't deliver this info from the cache alone
def start(self):
self._startup_done.wait(2)
self._window.openViews(self.views)
self._window.show()
try:
self._qtapp.exec_()
except KeyboardInterrupt:
pass
self._stoprequest = True
def _propagate(self, data):
self._window.newValue.emit(data)
def mouseMoveEvent(self, event):
if not (event.buttons() & Qt.LeftButton):
return
if not self._dragStartPos.isNull() and \
self.tabAt(self._dragStartPos) != -1 and \
(event.pos() - self._dragStartPos).manhattanLength() \
< QApplication.startDragDistance():
self._dragInitiated = True
if (event.buttons() == Qt.LeftButton) and self._dragInitiated and \
not self.geometry().contains(event.pos()):
finishMoveEvent = QMouseEvent(QEvent.MouseMove, event.pos(),
Qt.NoButton, Qt.NoButton,
Qt.NoModifier)
QTabBar.mouseMoveEvent(self, finishMoveEvent)
drag = QDrag(self)
mimedata = QMimeData()
mimedata.setData('action', b'application/tab-detach')
drag.setMimeData(mimedata)
if QT_VER == 4:
pixmap = QPixmap.grabWidget(self.parentWidget().currentWidget())
else:
pixmap = self.parentWidget().currentWidget().grab()
pixmap = pixmap.scaled(640, 480, Qt.KeepAspectRatio)
drag.setPixmap(pixmap)
drag.setDragCursor(QPixmap(), Qt.LinkAction)
dragged = drag.exec_(Qt.MoveAction)
if dragged == Qt.IgnoreAction:
# moved outside of tab widget
event.accept()
self.tabDetached.emit(self.tabAt(self._dragStartPos),
QCursor.pos())
elif dragged == Qt.MoveAction:
# moved inside of tab widget
if not self._dragDroppedPos.isNull():
event.accept()
self.tabMoved.emit(self.tabAt(self._dragStartPos),
self.tabAt(self._dragDroppedPos))
self._dragDroppedPos = QPoint()
else:
QTabBar.mouseMoveEvent(self, event)
class CacheInspector(CICacheClient):
def doInit(self, mode):
CICacheClient.doInit(self, self._mode)
self._qtapp = QApplication(sys.argv)
self._qtapp.setOrganizationName('nicos')
self._qtapp.setApplicationName('cacheinspector')
self._window = MainWindow(self)
self._window.setWindowIcon(QIcon(':/inspector'))
session._qthandler.setStatusbar(self._window.statusBar())
def start(self):
self._window.show()
if self.cache:
self.connect(self.cache)
try:
self._qtapp.exec_()
except KeyboardInterrupt:
pass
self._stoprequest = True
def copy():
QApplication.clipboard().setText(tb+'\n', QClipboard.Selection)
QApplication.clipboard().setText(tb+'\n', QClipboard.Clipboard)
def setQSS(style_file):
with open(style_file, 'r', encoding='utf-8') as fd:
try:
QApplication.instance().setStyleSheet(fd.read())
except Exception as e:
print(e)
def main(argv):
global log # pylint: disable=global-statement
userpath = path.join(path.expanduser('~'), '.config', 'nicos')
# Set up logging for the GUI instance.
initLoggers()
log = NicosLogger('gui')
log.parent = None
log.setLevel(logging.INFO)
log.addHandler(ColoredConsoleHandler())
log.addHandler(
NicosLogfileHandler(path.join(userpath, 'log'),
'gui',
use_subdir=False))
# set up logging for unhandled exceptions in Qt callbacks
def log_unhandled(*exc_info):
traceback.print_exception(*exc_info)
log.exception('unhandled exception in QT callback', exc_info=exc_info)
sys.excepthook = log_unhandled
app = QApplication(argv, organizationName='nicos', applicationName='gui')
opts = parseargs()
if opts.configfile is None:
try:
config.apply()
except RuntimeError:
pass
# If "demo" is detected automatically, let the user choose their
# instrument configuration.
need_dialog = config.instrument is None or \
(config.setup_package == 'nicos_demo' and
config.instrument == 'demo' and
'INSTRUMENT' not in os.environ)
if need_dialog:
opts.configfile = InstrSelectDialog.select(
'Your instrument could not be automatically detected.')
if opts.configfile is None:
return
else:
opts.configfile = path.join(config.setup_package_path,
config.instrument, 'guiconfig.py')
with open(opts.configfile, 'rb') as fp:
configcode = fp.read()
gui_conf = processGuiConfig(configcode)
gui_conf.stylefile = ''
if gui_conf.options.get('facility') in ['ess', 'sinq']:
gui_conf.stylefile = f"{config.nicos_root}" \
f"/nicos/clients/flowui/guiconfig.qss"
stylefiles = [
path.join(userpath, 'style-%s.qss' % sys.platform),
path.join(userpath, 'style.qss'),
path.splitext(opts.configfile)[0] + '-%s.qss' % sys.platform,
path.splitext(opts.configfile)[0] + '.qss',
]
for stylefile in [gui_conf.stylefile] or stylefiles:
if path.isfile(stylefile):
try:
with open(stylefile, 'r', encoding='utf-8') as fd:
app.setStyleSheet(fd.read())
gui_conf.stylefile = stylefile
break
except Exception:
log.warning('Error setting user style sheet from %s',
stylefile,
exc=1)
mainwindow_cls = _mainwindow_cls.get(
gui_conf.options.get('facility', 'default'))
mainwindow = mainwindow_cls(log, gui_conf, opts.viewonly, opts.tunnel)
log.addHandler(DebugHandler(mainwindow))
if opts.connect:
parsed = parseConnectionString(opts.connect, DEFAULT_PORT)
if parsed:
cdata = ConnectionData(**parsed)
cdata.viewonly = opts.viewonly
mainwindow.setConnData(cdata)
if cdata.password is not None:
# we have a password, connect right away
mainwindow.client.connect(mainwindow.conndata)
else:
# we need to ask for password, override last preset (uses given
# connection data) and force showing connect window
mainwindow.lastpreset = ''
mainwindow.autoconnect = True
mainwindow.startup()
return app.exec_()
def initGui(self):
def log_unhandled(*exc_info):
traceback.print_exception(*exc_info)
self.log.exception('unhandled exception in QT callback',
exc_info=exc_info)
sys.excepthook = log_unhandled
self._qtapp = QApplication(['qtapp'], organizationName='nicos',
applicationName='gui')
self._master = master = MonitorWindow()
if self._geometry == 'fullscreen':
master.showFullScreen()
master._wantFullScreen = True
# In some Qt5 versions, showFullScreen is buggy and doesn't
# actually resize the window (but hides decoration etc).
# So, explicitly set the geometry of the first screen.
master.setGeometry(QApplication.screens()[0].geometry())
QCursor.setPos(master.geometry().bottomRight())
elif isinstance(self._geometry, tuple):
w, h, x, y = self._geometry
master.setGeometry(x, y, w, h)
# colors used for the display of watchdog warnings, not for the
# individual value displays
self._bgcolor = QColor('gray')
self._black = QColor('black')
self._red = QColor('red')
self._gray = QColor('gray')
master.setWindowTitle(self.title)
self._bgcolor = master.palette().color(QPalette.Window)
timefont = QFont(self.font, self._timefontsize)
blockfont = QFont(self.font, self._fontsizebig)
warnfont = QFont(self.font, self._fontsizebig)
warnfont.setBold(True)
labelfont = QFont(self.font, self._fontsize)
stbarfont = QFont(self.font, int(self._fontsize * 0.8))
valuefont = QFont(self.valuefont or self.font, self._fontsize)
blheight = QFontMetrics(blockfont).height()
tiheight = QFontMetrics(timefont).height()
# split window into to panels/frames below each other:
# one displays time, the other is divided further to display blocks.
# first the timeframe:
masterframe = QFrame(master)
masterlayout = QVBoxLayout()
if self.title:
self._titlelabel = QLabel(
'', master, font=timefont, autoFillBackground=True,
alignment=Qt.AlignHCenter)
pal = self._titlelabel.palette()
pal.setColor(QPalette.WindowText, self._gray)
self._titlelabel.setPalette(pal)
self._titlelabel.setSizePolicy(QSizePolicy.Preferred,
QSizePolicy.Fixed)
self._master.updateTitle.connect(self._titlelabel.setText)
masterlayout.addWidget(self._titlelabel)
masterlayout.addSpacing(0.2 * tiheight)
else:
self._titlelabel = None
self._warnpanel = QFrame(master)
self._warnpanel.setVisible(False)
warningslayout = QVBoxLayout()
lbl = QLabel('Warnings', self._warnpanel, font=warnfont)
lbl.setSizePolicy(QSizePolicy.Preferred, QSizePolicy.Fixed)
warningslayout.addWidget(lbl)
self._warnlabel = SqueezedLabel('', self._warnpanel, font=blockfont)
warningslayout.addWidget(self._warnlabel)
self._warnpanel.setLayout(warningslayout)
masterlayout.addWidget(self._warnpanel)
master.switchWarnPanel.connect(self._switch_warnpanel)
displayframe = QFrame(master)
self._plots = {}
colorScheme = lightColorScheme if self.colors == 'light' else None
fontCache = {1.0: valuefont}
def _create_field(groupframe, field):
def _setup(widget):
fontscale = field.get('fontscale', 1.0)
if fontscale not in fontCache:
fontCache[fontscale] = scaledFont(valuefont, fontscale)
widget.valueFont = fontCache[fontscale]
widget.setFont(labelfont)
for key in field:
if key in widget.properties:
setattr(widget, key, field[key])
widget.setSource(self)
if hasattr(widget, 'widgetInfo'):
widget.widgetInfo.connect(self.newWidgetInfo)
return widget
if isinstance(field, str):
field = {'dev': field}
if 'min' in field:
field['min'] = repr(field['min'])
if 'max' in field:
field['max'] = repr(field['max'])
setups = field.get('setups', None)
if 'gui' in field:
resource = findResource(field.pop('gui'))
try:
instance = uic.loadUi(resource)
except Exception as err:
self.log.exception('could not load .ui file %r, ignoring',
resource)
instance = QLabel('%r could not be loaded:\n%s' %
(resource, err))
else:
for child in instance.findChildren(NicosWidget):
_setup(child)
instance.setups = setups
return instance
elif 'widget' in field:
widget_class = self._class_import(field.pop('widget'))
widget = widget_class(groupframe)
if isinstance(widget, NicosWidget):
_setup(widget)
for child in widget.findChildren(NicosWidget):
_setup(child)
widget.setups = setups
return widget
elif 'plot' in field and plot_available:
# XXX make this more standard
plotwidget = self._plots.get(field['plot'])
if plotwidget:
plotwidget.devices += [field.get('dev', field.get('key', ''))]
plotwidget.names += [field.get('name', field.get('dev', field.get('key', '')))]
return None
plotwidget = TrendPlot(groupframe)
_setup(plotwidget)
plotwidget.legend = field.get('legend', True)
plotwidget.plotwindow = field.get('plotwindow', 3600)
plotwidget.plotinterval = field.get('plotinterval', 2)
self._plots[field['plot']] = plotwidget
plotwidget.devices = [field.get('dev', field.get('key', ''))]
plotwidget.names = [field.get('name', field.get('dev', field.get('key', '')))]
plotwidget.setups = setups
return plotwidget
elif 'picture' in field:
picwidget = PictureDisplay(groupframe)
picwidget.filepath = field['picture']
picwidget.setups = setups
return _setup(picwidget)
else:
display = ValueDisplay(groupframe, colorScheme=colorScheme,
showExpiration=self.noexpired)
display.setups = setups
return _setup(display)
# now iterate through the layout and create the widgets to display it
displaylayout = QVBoxLayout(spacing=20)
for superrow in self.layout:
boxlayout = QHBoxLayout(spacing=20)
boxlayout.setContentsMargins(10, 10, 10, 10)
for column in superrow:
columnlayout = QVBoxLayout(spacing=0.8*blheight)
for block in column:
block = self._resolve_block(block)
blocklayout_outer = QHBoxLayout()
blocklayout_outer.addStretch()
blocklayout = QVBoxLayout()
blocklayout.addSpacing(0.5 * blheight)
blockbox = BlockBox(displayframe, block._title, blockfont,
block._options)
for row in block:
if row in (None, '---'):
blocklayout.addSpacing(12)
else:
rowlayout = QHBoxLayout()
rowlayout.addStretch()
rowlayout.addSpacing(self._padding)
for field in row:
fieldwidget = _create_field(blockbox, field)
if fieldwidget:
rowlayout.addWidget(fieldwidget)
rowlayout.addSpacing(self._padding)
if fieldwidget.setups:
if blockbox.setups:
blockbox._onlyfields.append(fieldwidget)
else:
self._onlyfields.append(fieldwidget)
# start hidden
fieldwidget.setHidden(True)
rowlayout.addStretch()
blocklayout.addLayout(rowlayout)
if blockbox.setups:
self._onlyblocks.append((blocklayout_outer, blockbox))
blockbox.setHidden(True) # start hidden
blocklayout.addSpacing(0.3 * blheight)
blockbox.setLayout(blocklayout)
blocklayout_outer.addWidget(blockbox)
blocklayout_outer.addStretch()
columnlayout.addLayout(blocklayout_outer)
columnlayout.addStretch()
boxlayout.addLayout(columnlayout)
displaylayout.addLayout(boxlayout)
displayframe.setLayout(displaylayout)
for plot in self._plots.values():
plot.setSource(self)
masterlayout.addWidget(displayframe)
masterframe.setLayout(masterlayout)
master.setCentralWidget(masterframe)
# initialize status bar
self._statuslabel = QLabel(font=stbarfont)
master.statusBar().addWidget(self._statuslabel)
self._statustimer = None
master.show()
def wait_cursor():
try:
QApplication.setOverrideCursor(QCursor(Qt.WaitCursor))
yield
finally:
QApplication.restoreOverrideCursor()
def setQSS(self, stylefile):
with open(stylefile, 'r') as fd:
try:
QApplication.instance().setStyleSheet(fd.read())
except Exception as e:
print(e)
return
self._setStart(v)
elif index == self._SPLIT_END:
_lockWidth(self._head)
if v <= self.start():
return
self._setEnd(v)
_unlockWidth(self._tail)
_unlockWidth(self._head)
_unlockWidth(self._handle)
#-------------------------------------------------------------------------------
# MAIN
#-------------------------------------------------------------------------------
if __name__ == '__main__':
app = QApplication(sys.argv)
rs = QRangeSlider()
rs.show()
rs.setRange(15, 35)
rs.setBackgroundStyle(
'background: qlineargradient(x1:0, y1:0, x2:0, y2:1, stop:0 #222, stop:1 #333);'
)
rs.handle.setStyleSheet(
'background: qlineargradient(x1:0, y1:0, x2:0, y2:1, stop:0 #282, stop:1 #393);'
)
app.exec_()
def keyPressEvent(self, kev):
key_code = kev.key()
# if it's a shifted scroll key...
if kev.modifiers() & Qt.ShiftModifier and \
self.scrollWidget and \
key_code in self.scrollingKeys:
# create a new, unshifted key event and send it to the
# scrolling widget
nev = QKeyEvent(kev.type(), kev.key(), Qt.NoModifier)
QApplication.sendEvent(self.scrollWidget, nev)
return
if key_code == Qt.Key_Escape:
# abort history search
self.setText(self._start_text)
self._current = -1
self.escapePressed.emit()
QLineEdit.keyPressEvent(self, kev)
elif key_code == Qt.Key_Up:
# go earlier
if self._current == -1:
self._start_text = self.text()
self._current = len(self.history)
self.stepHistory(-1)
elif key_code == Qt.Key_Down:
# go later
if self._current == -1:
return
self.stepHistory(1)
elif key_code == Qt.Key_PageUp:
# go earlier with prefix
if self._current == -1:
self._current = len(self.history)
self._start_text = self.text()
prefix = self.text()[:self.cursorPosition()]
self.stepHistoryUntil(prefix, 'up')
elif key_code == Qt.Key_PageDown:
# go later with prefix
if self._current == -1:
return
prefix = self.text()[:self.cursorPosition()]
self.stepHistoryUntil(prefix, 'down')
elif key_code == Qt.Key_Return or key_code == Qt.Key_Enter:
# accept - add to history and do normal processing
self._current = -1
text = self.text()
if text and (not self.history or self.history[-1] != text):
# append to history, but only if it isn't equal to the last
self.history.append(text)
self._completer.setCompletionPrefix('')
self._completer.setModel(QStringListModel([], self))
QLineEdit.keyPressEvent(self, kev)
else:
# process normally
QLineEdit.keyPressEvent(self, kev)
def _handle_copy_cells(self):
selected_data = self._extract_selected_data()
clipboard_text = convert_table_to_clipboard_text(selected_data)
QApplication.instance().clipboard().setText(clipboard_text)
def on_runBtn_clicked(self):
# Make sure we add the command to the history.
event = QKeyEvent(QKeyEvent.KeyPress, Qt.Key_Enter, Qt.NoModifier)
QApplication.postEvent(self.commandInput, event)
def main():
app = QApplication(sys.argv)
myWindow = MainWindow()
myWindow.resize(800, 600)
myWindow.show()
sys.exit(app.exec_())
