# coding: utf-8
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"""
Module containing widgets displaying stats from items of a plot.
"""
__authors__ = ["H. Payno"]
__license__ = "MIT"
__date__ = "24/07/2018"
from collections import OrderedDict
from contextlib import contextmanager
import logging
import weakref
import functools
import numpy
import enum
from silx.utils.proxy import docstring
from silx.utils.enum import Enum as _Enum
from silx.gui import qt
from silx.gui import icons
from silx.gui.plot import stats as statsmdl
from silx.gui.widgets.TableWidget import TableWidget
from silx.gui.plot.stats.statshandler import StatsHandler, StatFormatter
from silx.gui.plot.items.core import ItemChangedType
from silx.gui.widgets.FlowLayout import FlowLayout
from . import PlotWidget
from . import items as plotitems
_logger = logging.getLogger(__name__)
@enum.unique
class UpdateMode(_Enum):
AUTO = 'auto'
MANUAL = 'manual'
# Helper class to handle specific calls to PlotWidget and SceneWidget
class _Wrapper(qt.QObject):
"""Base class for connection with PlotWidget and SceneWidget.
This class is used when no PlotWidget or SceneWidget is connected.
:param plot: The plot to be used
"""
sigItemAdded = qt.Signal(object)
"""Signal emitted when a new item is added.
It provides the added item.
"""
sigItemRemoved = qt.Signal(object)
"""Signal emitted when an item is (about to be) removed.
It provides the removed item.
"""
sigCurrentChanged = qt.Signal(object)
"""Signal emitted when the current item has changed.
It provides the current item.
"""
sigVisibleDataChanged = qt.Signal()
"""Signal emitted when the visible data area has changed"""
def __init__(self, plot=None):
super(_Wrapper, self).__init__(parent=None)
self._plotRef = None if plot is None else weakref.ref(plot)
def getPlot(self):
"""Returns the plot attached to this widget"""
return None if self._plotRef is None else self._plotRef()
def getItems(self):
"""Returns the list of items in the plot
:rtype: List[object]
"""
return ()
def getSelectedItems(self):
"""Returns the list of selected items in the plot
:rtype: List[object]
"""
return ()
def setCurrentItem(self, item):
"""Set the current/active item in the plot
:param item: The plot item to set as active/current
"""
pass
def getLabel(self, item):
"""Returns the label of the given item.
:param item:
:rtype: str
"""
return ''
def getKind(self, item):
"""Returns the kind of an item or None if not supported
:param item:
:rtype: Union[str,None]
"""
return None
class _PlotWidgetWrapper(_Wrapper):
"""Class handling PlotWidget specific calls and signal connections
See :class:`._Wrapper` for documentation
:param PlotWidget plot:
"""
def __init__(self, plot):
assert isinstance(plot, PlotWidget)
super(_PlotWidgetWrapper, self).__init__(plot)
plot.sigItemAdded.connect(self.sigItemAdded.emit)
plot.sigItemAboutToBeRemoved.connect(self.sigItemRemoved.emit)
plot.sigActiveCurveChanged.connect(self._activeCurveChanged)
plot.sigActiveImageChanged.connect(self._activeImageChanged)
plot.sigActiveScatterChanged.connect(self._activeScatterChanged)
plot.sigPlotSignal.connect(self._limitsChanged)
def _activeChanged(self, kind):
"""Handle change of active curve/image/scatter"""
plot = self.getPlot()
if plot is not None:
item = plot._getActiveItem(kind=kind)
if item is None or self.getKind(item) is not None:
self.sigCurrentChanged.emit(item)
def _activeCurveChanged(self, previous, current):
self._activeChanged(kind='curve')
def _activeImageChanged(self, previous, current):
self._activeChanged(kind='image')
def _activeScatterChanged(self, previous, current):
self._activeChanged(kind='scatter')
def _limitsChanged(self, event):
"""Handle change of plot area limits."""
if event['event'] == 'limitsChanged':
self.sigVisibleDataChanged.emit()
def getItems(self):
plot = self.getPlot()
if plot is None:
return ()
else:
return [item for item in plot.getItems() if item.isVisible()]
def getSelectedItems(self):
plot = self.getPlot()
items = []
if plot is not None:
for kind in plot._ACTIVE_ITEM_KINDS:
item = plot._getActiveItem(kind=kind)
if item is not None:
items.append(item)
return tuple(items)
def setCurrentItem(self, item):
plot = self.getPlot()
if plot is not None:
kind = self.getKind(item)
if kind in plot._ACTIVE_ITEM_KINDS:
if plot._getActiveItem(kind) != item:
plot._setActiveItem(kind, item.getName())
def getLabel(self, item):
return item.getName()
def getKind(self, item):
if isinstance(item, plotitems.Curve):
return 'curve'
elif isinstance(item, plotitems.ImageData):
return 'image'
elif isinstance(item, plotitems.Scatter):
return 'scatter'
elif isinstance(item, plotitems.Histogram):
return 'histogram'
else:
return None
class _SceneWidgetWrapper(_Wrapper):
"""Class handling SceneWidget specific calls and signal connections
See :class:`._Wrapper` for documentation
:param SceneWidget plot:
"""
def __init__(self, plot):
# Lazy-import to avoid circular imports
from ..plot3d.SceneWidget import SceneWidget
assert isinstance(plot, SceneWidget)
super(_SceneWidgetWrapper, self).__init__(plot)
plot.getSceneGroup().sigItemAdded.connect(self.sigItemAdded)
plot.getSceneGroup().sigItemRemoved.connect(self.sigItemRemoved)
plot.selection().sigCurrentChanged.connect(self._currentChanged)
# sigVisibleDataChanged is never emitted
def _currentChanged(self, current, previous):
self.sigCurrentChanged.emit(current)
def getItems(self):
plot = self.getPlot()
return () if plot is None else tuple(plot.getSceneGroup().visit())
def getSelectedItems(self):
plot = self.getPlot()
return () if plot is None else (plot.selection().getCurrentItem(),)
def setCurrentItem(self, item):
plot = self.getPlot()
if plot is not None:
plot.selection().setCurrentItem(item)
def getLabel(self, item):
return item.getLabel()
def getKind(self, item):
from ..plot3d import items as plot3ditems
if isinstance(item, (plot3ditems.ImageData,
plot3ditems.ScalarField3D)):
return 'image'
elif isinstance(item, (plot3ditems.Scatter2D,
plot3ditems.Scatter3D)):
return 'scatter'
else:
return None
class _ScalarFieldViewWrapper(_Wrapper):
"""Class handling ScalarFieldView specific calls and signal connections
See :class:`._Wrapper` for documentation
:param SceneWidget plot:
"""
def __init__(self, plot):
# Lazy-import to avoid circular imports
from ..plot3d.ScalarFieldView import ScalarFieldView
from ..plot3d.items import ScalarField3D
assert isinstance(plot, ScalarFieldView)
super(_ScalarFieldViewWrapper, self).__init__(plot)
self._item = ScalarField3D()
self._dataChanged()
plot.sigDataChanged.connect(self._dataChanged)
# sigItemAdded, sigItemRemoved, sigVisibleDataChanged are never emitted
def _dataChanged(self):
plot = self.getPlot()
if plot is not None:
self._item.setData(plot.getData(copy=False), copy=False)
self.sigCurrentChanged.emit(self._item)
def getItems(self):
plot = self.getPlot()
return () if plot is None else (self._item,)
def getSelectedItems(self):
return self.getItems()
def setCurrentItem(self, item):
pass
def getLabel(self, item):
return 'Data'
def getKind(self, item):
return 'image'
class _Container(object):
"""Class to contain a plot item.
This is apparently needed for compatibility with PySide2,
:param QObject obj:
"""
def __init__(self, obj):
self._obj = obj
def __call__(self):
return self._obj
class _StatsWidgetBase(object):
"""
Base class for all widgets which want to display statistics
"""
def __init__(self, statsOnVisibleData, displayOnlyActItem):
self._displayOnlyActItem = displayOnlyActItem
self._statsOnVisibleData = statsOnVisibleData
self._statsHandler = None
self._updateMode = UpdateMode.AUTO
self.__default_skipped_events = (
ItemChangedType.ALPHA,
ItemChangedType.COLOR,
ItemChangedType.COLORMAP,
ItemChangedType.SYMBOL,
ItemChangedType.SYMBOL_SIZE,
ItemChangedType.LINE_WIDTH,
ItemChangedType.LINE_STYLE,
ItemChangedType.LINE_BG_COLOR,
ItemChangedType.FILL,
ItemChangedType.HIGHLIGHTED_COLOR,
ItemChangedType.HIGHLIGHTED_STYLE,
ItemChangedType.TEXT,
ItemChangedType.OVERLAY,
ItemChangedType.VISUALIZATION_MODE,
)
self._plotWrapper = _Wrapper()
self._dealWithPlotConnection(create=True)
def setPlot(self, plot):
"""Define the plot to interact with
:param Union[PlotWidget,SceneWidget,None] plot:
The plot containing the items on which statistics are applied
"""
try:
import OpenGL
except ImportError:
has_opengl = False
else:
has_opengl = True
from ..plot3d.SceneWidget import SceneWidget # Lazy import
self._dealWithPlotConnection(create=False)
self.clear()
if plot is None:
self._plotWrapper = _Wrapper()
elif isinstance(plot, PlotWidget):
self._plotWrapper = _PlotWidgetWrapper(plot)
else:
if has_opengl is True:
if isinstance(plot, SceneWidget):
self._plotWrapper = _SceneWidgetWrapper(plot)
else: # Expect a ScalarFieldView
self._plotWrapper = _ScalarFieldViewWrapper(plot)
else:
_logger.warning('OpenGL not installed, %s not managed' % ('SceneWidget qnd ScalarFieldView'))
self._dealWithPlotConnection(create=True)
def setStats(self, statsHandler):
"""Set which stats to display and the associated formatting.
:param StatsHandler statsHandler:
Set the statistics to be displayed and how to format them using
"""
if statsHandler is None:
statsHandler = StatsHandler(statFormatters=())
elif isinstance(statsHandler, (list, tuple)):
statsHandler = StatsHandler(statsHandler)
assert isinstance(statsHandler, StatsHandler)
self._statsHandler = statsHandler
def getStatsHandler(self):
"""Returns the :class:`StatsHandler` in use.
:rtype: StatsHandler
"""
return self._statsHandler
def getPlot(self):
"""Returns the plot attached to this widget
:rtype: Union[PlotWidget,SceneWidget,None]
"""
return self._plotWrapper.getPlot()
def _dealWithPlotConnection(self, create=True):
"""Manage connection to plot signals
Note: connection on Item are managed by _addItem and _removeItem methods
"""
connections = [] # List of (signal, slot) to connect/disconnect
if self._statsOnVisibleData:
connections.append(
(self._plotWrapper.sigVisibleDataChanged, self._updateAllStats))
if self._displayOnlyActItem:
connections.append(
(self._plotWrapper.sigCurrentChanged, self._updateCurrentItem))
else:
connections += [
(self._plotWrapper.sigItemAdded, self._addItem),
(self._plotWrapper.sigItemRemoved, self._removeItem),
(self._plotWrapper.sigCurrentChanged, self._plotCurrentChanged)]
for signal, slot in connections:
if create:
signal.connect(slot)
else:
signal.disconnect(slot)
def _updateItemObserve(self, *args):
"""Reload table depending on mode"""
raise NotImplementedError('Base class')
def _updateCurrentItem(self, *args):
"""specific callback for the sigCurrentChanged and with the
_displayOnlyActItem option."""
raise NotImplementedError('Base class')
def _updateStats(self, item, data_changed=False, roi_changed=False):
"""Update displayed information for given plot item
:param item: The plot item
:param bool data_changed: is the item data changed.
:param bool roi_changed: is the associated roi changed.
"""
raise NotImplementedError('Base class')
def _updateAllStats(self):
"""Update stats for all rows in the table"""
raise NotImplementedError('Base class')
def setDisplayOnlyActiveItem(self, displayOnlyActItem):
"""Toggle display off all items or only the active/selected one
:param bool displayOnlyActItem:
True if we want to only show active item
"""
self._displayOnlyActItem = displayOnlyActItem
def setStatsOnVisibleData(self, b):
"""Toggle computation of statistics on whole data or only visible ones.
.. warning:: When visible data is activated we will process to a simple
filtering of visible data by the user. The filtering is a
simple data sub-sampling. No interpolation is made to fit
data to boundaries.
:param bool b: True if we want to apply statistics only on visible data
"""
if self._statsOnVisibleData != b:
self._dealWithPlotConnection(create=False)
self._statsOnVisibleData = b
self._dealWithPlotConnection(create=True)
self._updateAllStats()
def _addItem(self, item):
"""Add a plot item to the table
If item is not supported, it is ignored.
:param item: The plot item
:returns: True if the item is added to the widget.
:rtype: bool
"""
raise NotImplementedError('Base class')
def _removeItem(self, item):
"""Remove table items corresponding to given plot item from the table.
:param item: The plot item
"""
raise NotImplementedError('Base class')
def _plotCurrentChanged(self, current):
"""Handle change of current item and update selection in table
:param current:
"""
raise NotImplementedError('Base class')
def clear(self):
"""clear GUI"""
pass
def _skipPlotItemChangedEvent(self, event):
"""
:param ItemChangedtype event: event to filter or not
:return: True if we want to ignore this ItemChangedtype
:rtype: bool
"""
return event in self.__default_skipped_events
def setUpdateMode(self, mode):
"""Set the way to update the displayed statistics.
:param mode: mode requested for update
:type mode: Union[str,UpdateMode]
"""
mode = UpdateMode.from_value(mode)
if mode != self._updateMode:
self._updateMode = mode
self._updateModeHasChanged()
def getUpdateMode(self):
"""Returns update mode (See :meth:`setUpdateMode`).
:return: update mode
:rtype: UpdateMode
"""
return self._updateMode
def _updateModeHasChanged(self):
"""callback when the update mode has changed"""
pass
[docs]class StatsTable(_StatsWidgetBase, TableWidget):
"""
TableWidget displaying for each items contained by the Plot some
information:
* legend
* minimal value
* maximal value
* standard deviation (std)
:param QWidget parent: The widget's parent.
:param Union[PlotWidget,SceneWidget] plot:
:class:`PlotWidget` or :class:`SceneWidget` instance on which to operate
"""
_LEGEND_HEADER_DATA = 'legend'
_KIND_HEADER_DATA = 'kind'
sigUpdateModeChanged = qt.Signal(object)
"""Signal emitted when the update mode changed"""
def __init__(self, parent=None, plot=None):
TableWidget.__init__(self, parent)
_StatsWidgetBase.__init__(self, statsOnVisibleData=False,
displayOnlyActItem=False)
# Init for _displayOnlyActItem == False
assert self._displayOnlyActItem is False
self.setSelectionBehavior(qt.QAbstractItemView.SelectRows)
self.setSelectionMode(qt.QAbstractItemView.SingleSelection)
self.currentItemChanged.connect(self._currentItemChanged)
self.setRowCount(0)
self.setColumnCount(2)
# Init headers
headerItem = qt.QTableWidgetItem(self._LEGEND_HEADER_DATA.title())
headerItem.setData(qt.Qt.UserRole, self._LEGEND_HEADER_DATA)
self.setHorizontalHeaderItem(0, headerItem)
headerItem = qt.QTableWidgetItem(self._KIND_HEADER_DATA.title())
headerItem.setData(qt.Qt.UserRole, self._KIND_HEADER_DATA)
self.setHorizontalHeaderItem(1, headerItem)
self.setSortingEnabled(True)
self.setPlot(plot)
@contextmanager
def _disableSorting(self):
"""Context manager that disables table sorting
Previous state is restored when leaving
"""
sorting = self.isSortingEnabled()
if sorting:
self.setSortingEnabled(False)
yield
if sorting:
self.setSortingEnabled(sorting)
[docs] def setStats(self, statsHandler):
"""Set which stats to display and the associated formatting.
:param StatsHandler statsHandler:
Set the statistics to be displayed and how to format them using
"""
self._removeAllItems()
_StatsWidgetBase.setStats(self, statsHandler)
self.setRowCount(0)
self.setColumnCount(len(self._statsHandler.stats) + 2) # + legend and kind
for index, stat in enumerate(self._statsHandler.stats.values()):
headerItem = qt.QTableWidgetItem(stat.name.capitalize())
headerItem.setData(qt.Qt.UserRole, stat.name)
if stat.description is not None:
headerItem.setToolTip(stat.description)
self.setHorizontalHeaderItem(2 + index, headerItem)
horizontalHeader = self.horizontalHeader()
horizontalHeader.setSectionResizeMode(qt.QHeaderView.ResizeToContents)
self._updateItemObserve()
[docs] def setPlot(self, plot):
"""Define the plot to interact with
:param Union[PlotWidget,SceneWidget,None] plot:
The plot containing the items on which statistics are applied
"""
_StatsWidgetBase.setPlot(self, plot)
self._updateItemObserve()
[docs] def clear(self):
"""Define the plot to interact with
:param Union[PlotWidget,SceneWidget,None] plot:
The plot containing the items on which statistics are applied
"""
self._removeAllItems()
def _updateItemObserve(self, *args):
"""Reload table depending on mode"""
self._removeAllItems()
# Get selected or all items from the plot
if self._displayOnlyActItem: # Only selected
items = self._plotWrapper.getSelectedItems()
else: # All items
items = self._plotWrapper.getItems()
# Add items to the plot
for item in items:
self._addItem(item)
def _updateCurrentItem(self, *args):
"""specific callback for the sigCurrentChanged and with the
_displayOnlyActItem option.
Behavior: create the tableItems if does not exists.
If exists, update it only when we are in 'auto' mode"""
if self.getUpdateMode() is UpdateMode.MANUAL:
# when sigCurrentChanged is giving the current item
if len(args) > 0 and isinstance(args[0], (plotitems.Curve, plotitems.Histogram, plotitems.ImageData, plotitems.Scatter)):
item = args[0]
tableItems = self._itemToTableItems(item)
# if the table does not exists yet
if len(tableItems) == 0:
self._updateItemObserve()
else:
# in this case no current item
self._updateItemObserve(args)
else:
# auto mode
self._updateItemObserve(args)
def _plotCurrentChanged(self, current):
"""Handle change of current item and update selection in table
:param current:
"""
row = self._itemToRow(current)
if row is None:
if self.currentRow() >= 0:
self.setCurrentCell(-1, -1)
elif row != self.currentRow():
self.setCurrentCell(row, 0)
def _tableItemToItem(self, tableItem):
"""Find the plot item corresponding to a table item
:param QTableWidgetItem tableItem:
:rtype: QObject
"""
container = tableItem.data(qt.Qt.UserRole)
return container()
def _itemToRow(self, item):
"""Find the row corresponding to a plot item
:param item: The plot item
:return: The corresponding row index
:rtype: Union[int,None]
"""
for row in range(self.rowCount()):
tableItem = self.item(row, 0)
if self._tableItemToItem(tableItem) == item:
return row
return None
def _itemToTableItems(self, item):
"""Find all table items corresponding to a plot item
:param item: The plot item
:return: An ordered dict of column name to QTableWidgetItem mapping
for the given plot item.
:rtype: OrderedDict
"""
result = OrderedDict()
row = self._itemToRow(item)
if row is not None:
for column in range(self.columnCount()):
tableItem = self.item(row, column)
if self._tableItemToItem(tableItem) != item:
_logger.error("Table item/plot item mismatch")
else:
header = self.horizontalHeaderItem(column)
name = header.data(qt.Qt.UserRole)
result[name] = tableItem
return result
def _plotItemChanged(self, event):
"""Handle modifications of the items.
:param event:
"""
if self.getUpdateMode() is UpdateMode.MANUAL:
return
if self._skipPlotItemChangedEvent(event) is True:
return
else:
item = self.sender()
self._updateStats(item, data_changed=True)
# deal with stat items visibility
if event is ItemChangedType.VISIBLE:
if len(self._itemToTableItems(item).items()) > 0:
item_0 = list(self._itemToTableItems(item).values())[0]
row_index = item_0.row()
self.setRowHidden(row_index, not item.isVisible())
def _addItem(self, item):
"""Add a plot item to the table
If item is not supported, it is ignored.
:param item: The plot item
:returns: True if the item is added to the widget.
:rtype: bool
"""
if self._itemToRow(item) is not None:
_logger.info("Item already present in the table")
self._updateStats(item)
return True
kind = self._plotWrapper.getKind(item)
if kind not in statsmdl.BASIC_COMPATIBLE_KINDS:
_logger.info("Item has not a supported type: %s", item)
return False
# Prepare table items
tableItems = [
qt.QTableWidgetItem(), # Legend
qt.QTableWidgetItem()] # Kind
for column in range(2, self.columnCount()):
header = self.horizontalHeaderItem(column)
name = header.data(qt.Qt.UserRole)
formatter = self._statsHandler.formatters[name]
if formatter:
tableItem = formatter.tabWidgetItemClass()
else:
tableItem = qt.QTableWidgetItem()
tooltip = self._statsHandler.stats[name].getToolTip(kind=kind)
if tooltip is not None:
tableItem.setToolTip(tooltip)
tableItems.append(tableItem)
# Disable sorting while adding table items
with self._disableSorting():
# Add a row to the table
self.setRowCount(self.rowCount() + 1)
# Add table items to the last row
row = self.rowCount() - 1
for column, tableItem in enumerate(tableItems):
tableItem.setData(qt.Qt.UserRole, _Container(item))
tableItem.setFlags(
qt.Qt.ItemIsEnabled | qt.Qt.ItemIsSelectable)
self.setItem(row, column, tableItem)
# Update table items content
self._updateStats(item, data_changed=True)
# Listen for item changes
# Using queued connection to avoid issue with sender
# being that of the signal calling the signal
item.sigItemChanged.connect(self._plotItemChanged,
qt.Qt.QueuedConnection)
return True
def _removeItem(self, item):
"""Remove table items corresponding to given plot item from the table.
:param item: The plot item
"""
row = self._itemToRow(item)
if row is None:
kind = self._plotWrapper.getKind(item)
if kind in statsmdl.BASIC_COMPATIBLE_KINDS:
_logger.error("Removing item that is not in table: %s", str(item))
return
item.sigItemChanged.disconnect(self._plotItemChanged)
self.removeRow(row)
def _removeAllItems(self):
"""Remove content of the table"""
for row in range(self.rowCount()):
tableItem = self.item(row, 0)
item = self._tableItemToItem(tableItem)
item.sigItemChanged.disconnect(self._plotItemChanged)
self.clearContents()
self.setRowCount(0)
def _updateStats(self, item, data_changed=False, roi_changed=False):
"""Update displayed information for given plot item
:param item: The plot item
:param bool data_changed: is the item data changed.
:param bool roi_changed: is the associated roi changed.
"""
if item is None:
return
plot = self.getPlot()
if plot is None:
_logger.info("Plot not available")
return
row = self._itemToRow(item)
if row is None:
_logger.error("This item is not in the table: %s", str(item))
return
statsHandler = self.getStatsHandler()
if statsHandler is not None:
# _updateStats is call when the plot visible area change.
# to force stats update we consider roi changed
if self._statsOnVisibleData:
roi_changed = True
else:
roi_changed = False
stats = statsHandler.calculate(
item, plot, self._statsOnVisibleData,
data_changed=data_changed, roi_changed=roi_changed)
else:
stats = {}
with self._disableSorting():
for name, tableItem in self._itemToTableItems(item).items():
if name == self._LEGEND_HEADER_DATA:
text = self._plotWrapper.getLabel(item)
tableItem.setText(text)
elif name == self._KIND_HEADER_DATA:
tableItem.setText(self._plotWrapper.getKind(item))
else:
value = stats.get(name)
if value is None:
_logger.error("Value not found for: %s", name)
tableItem.setText('-')
else:
tableItem.setText(str(value))
def _updateAllStats(self, is_request=False):
"""Update stats for all rows in the table
:param bool is_request: True if come from a manual request
"""
if self.getUpdateMode() is UpdateMode.MANUAL and not is_request:
return
with self._disableSorting():
for row in range(self.rowCount()):
tableItem = self.item(row, 0)
item = self._tableItemToItem(tableItem)
self._updateStats(item, data_changed=is_request)
def _currentItemChanged(self, current, previous):
"""Handle change of selection in table and sync plot selection
:param QTableWidgetItem current:
:param QTableWidgetItem previous:
"""
if current and current.row() >= 0:
item = self._tableItemToItem(current)
self._plotWrapper.setCurrentItem(item)
[docs] def setDisplayOnlyActiveItem(self, displayOnlyActItem):
"""Toggle display off all items or only the active/selected one
:param bool displayOnlyActItem:
True if we want to only show active item
"""
if self._displayOnlyActItem == displayOnlyActItem:
return
self._dealWithPlotConnection(create=False)
if not self._displayOnlyActItem:
self.currentItemChanged.disconnect(self._currentItemChanged)
_StatsWidgetBase.setDisplayOnlyActiveItem(self, displayOnlyActItem)
self._updateItemObserve()
self._dealWithPlotConnection(create=True)
if not self._displayOnlyActItem:
self.currentItemChanged.connect(self._currentItemChanged)
self.setSelectionMode(qt.QAbstractItemView.SingleSelection)
else:
self.setSelectionMode(qt.QAbstractItemView.NoSelection)
def _updateModeHasChanged(self):
self.sigUpdateModeChanged.emit(self._updateMode)
class UpdateModeWidget(qt.QWidget):
"""Widget used to select the mode of update"""
sigUpdateModeChanged = qt.Signal(object)
"""signal emitted when the mode for update changed"""
sigUpdateRequested = qt.Signal()
"""signal emitted when an manual request for example is activate"""
def __init__(self, parent=None):
qt.QWidget.__init__(self, parent)
self.setLayout(qt.QHBoxLayout())
self._buttonGrp = qt.QButtonGroup(parent=self)
self._buttonGrp.setExclusive(True)
spacer = qt.QSpacerItem(20, 20,
qt.QSizePolicy.Expanding,
qt.QSizePolicy.Minimum)
self.layout().addItem(spacer)
self._autoRB = qt.QRadioButton('auto', parent=self)
self.layout().addWidget(self._autoRB)
self._buttonGrp.addButton(self._autoRB)
self._manualRB = qt.QRadioButton('manual', parent=self)
self.layout().addWidget(self._manualRB)
self._buttonGrp.addButton(self._manualRB)
self._manualRB.setChecked(True)
refresh_icon = icons.getQIcon('view-refresh')
self._updatePB = qt.QPushButton(refresh_icon, '', parent=self)
self.layout().addWidget(self._updatePB)
# connect signal / SLOT
self._updatePB.clicked.connect(self._updateRequested)
self._manualRB.toggled.connect(self._manualButtonToggled)
self._autoRB.toggled.connect(self._autoButtonToggled)
def _manualButtonToggled(self, checked):
if checked:
self.setUpdateMode(UpdateMode.MANUAL)
self.sigUpdateModeChanged.emit(self.getUpdateMode())
def _autoButtonToggled(self, checked):
if checked:
self.setUpdateMode(UpdateMode.AUTO)
self.sigUpdateModeChanged.emit(self.getUpdateMode())
def _updateRequested(self):
if self.getUpdateMode() is UpdateMode.MANUAL:
self.sigUpdateRequested.emit()
def setUpdateMode(self, mode):
"""Set the way to update the displayed statistics.
:param mode: mode requested for update
:type mode: Union[str,UpdateMode]
"""
mode = UpdateMode.from_value(mode)
if mode is UpdateMode.AUTO:
if not self._autoRB.isChecked():
self._autoRB.setChecked(True)
elif mode is UpdateMode.MANUAL:
if not self._manualRB.isChecked():
self._manualRB.setChecked(True)
else:
raise ValueError('mode', mode, 'is not recognized')
def getUpdateMode(self):
"""Returns update mode (See :meth:`setUpdateMode`).
:return: the active update mode
:rtype: UpdateMode
"""
if self._manualRB.isChecked():
return UpdateMode.MANUAL
elif self._autoRB.isChecked():
return UpdateMode.AUTO
else:
raise RuntimeError("No mode selected")
def showRadioButtons(self, show):
"""show / hide the QRadioButtons
:param bool show: if True make RadioButton visible
"""
self._autoRB.setVisible(show)
self._manualRB.setVisible(show)
class _OptionsWidget(qt.QToolBar):
def __init__(self, parent=None, updateMode=None, displayOnlyActItem=False):
assert updateMode is not None
qt.QToolBar.__init__(self, parent)
self.setIconSize(qt.QSize(16, 16))
action = qt.QAction(self)
action.setIcon(icons.getQIcon("stats-active-items"))
action.setText("Active items only")
action.setToolTip("Display stats for active items only.")
action.setCheckable(True)
action.setChecked(displayOnlyActItem)
self.__displayActiveItems = action
action = qt.QAction(self)
action.setIcon(icons.getQIcon("stats-whole-items"))
action.setText("All items")
action.setToolTip("Display stats for all available items.")
action.setCheckable(True)
self.__displayWholeItems = action
action = qt.QAction(self)
action.setIcon(icons.getQIcon("stats-visible-data"))
action.setText("Use the visible data range")
action.setToolTip("Use the visible data range.<br/>"
"If activated the data is filtered to only use"
"visible data of the plot."
"The filtering is a data sub-sampling."
"No interpolation is made to fit data to"
"boundaries.")
action.setCheckable(True)
self.__useVisibleData = action
action = qt.QAction(self)
action.setIcon(icons.getQIcon("stats-whole-data"))
action.setText("Use the full data range")
action.setToolTip("Use the full data range.")
action.setCheckable(True)
action.setChecked(True)
self.__useWholeData = action
self.addAction(self.__displayWholeItems)
self.addAction(self.__displayActiveItems)
self.addSeparator()
self.addAction(self.__useVisibleData)
self.addAction(self.__useWholeData)
self.itemSelection = qt.QActionGroup(self)
self.itemSelection.setExclusive(True)
self.itemSelection.addAction(self.__displayActiveItems)
self.itemSelection.addAction(self.__displayWholeItems)
self.dataRangeSelection = qt.QActionGroup(self)
self.dataRangeSelection.setExclusive(True)
self.dataRangeSelection.addAction(self.__useWholeData)
self.dataRangeSelection.addAction(self.__useVisibleData)
self.__updateStatsAction = qt.QAction(self)
self.__updateStatsAction.setIcon(icons.getQIcon("view-refresh"))
self.__updateStatsAction.setText("update statistics")
self.__updateStatsAction.setToolTip("update statistics")
self.__updateStatsAction.setCheckable(False)
self._updateStatsSep = self.addSeparator()
self.addAction(self.__updateStatsAction)
self._setUpdateMode(mode=updateMode)
# expose API
self.sigUpdateStats = self.__updateStatsAction.triggered
def isActiveItemMode(self):
return self.itemSelection.checkedAction() is self.__displayActiveItems
def setDisplayActiveItems(self, only_active):
self.__displayActiveItems.setChecked(only_active)
self.__displayWholeItems.setChecked(not only_active)
def isVisibleDataRangeMode(self):
return self.dataRangeSelection.checkedAction() is self.__useVisibleData
def setVisibleDataRangeModeEnabled(self, enabled):
"""Enable/Disable the visible data range mode
:param bool enabled: True to allow user to choose
stats on visible data
"""
self.__useVisibleData.setEnabled(enabled)
if not enabled:
self.__useWholeData.setChecked(True)
def _setUpdateMode(self, mode):
self.__updateStatsAction.setVisible(mode == UpdateMode.MANUAL)
self._updateStatsSep.setVisible(mode == UpdateMode.MANUAL)
def getUpdateStatsAction(self):
"""
:return: the action for the automatic mode
:rtype: QAction
"""
return self.__updateStatsAction
DEFAULT_STATS = StatsHandler((
(statsmdl.StatMin(), StatFormatter()),
statsmdl.StatCoordMin(),
(statsmdl.StatMax(), StatFormatter()),
statsmdl.StatCoordMax(),
statsmdl.StatCOM(),
(('mean', numpy.mean), StatFormatter()),
(('std', numpy.std), StatFormatter()),
))
class _BaseLineStatsWidget(_StatsWidgetBase, qt.QWidget):
"""
Widget made to display stats into a QLayout with couple (QLabel, QLineEdit)
created for each stats.
The layout can be defined prior of adding any statistic.
:param QWidget parent: Qt parent
:param Union[PlotWidget,SceneWidget] plot:
The plot containing items on which we want statistics.
:param str kind: the kind of plotitems we want to display
:param StatsHandler stats:
Set the statistics to be displayed and how to format them using
:param bool statsOnVisibleData: compute statistics for the whole data or
only visible ones.
"""
sigUpdateModeChanged = qt.Signal(object)
"""Signal emitted when the update mode changed"""
def __init__(self, parent=None, plot=None, kind='curve', stats=None,
statsOnVisibleData=False):
self._item_kind = kind
"""The item displayed"""
self._statQlineEdit = {}
"""list of legends actually displayed"""
self._n_statistics_per_line = 4
"""number of statistics displayed per line in the grid layout"""
qt.QWidget.__init__(self, parent)
_StatsWidgetBase.__init__(self,
statsOnVisibleData=statsOnVisibleData,
displayOnlyActItem=True)
self.setLayout(self._createLayout())
self.setPlot(plot)
if stats is not None:
self.setStats(stats)
def _addItemForStatistic(self, statistic):
assert isinstance(statistic, statsmdl.StatBase)
assert statistic.name in self._statsHandler.stats
self.layout().setSpacing(2)
self.layout().setContentsMargins(2, 2, 2, 2)
if isinstance(self.layout(), qt.QGridLayout):
parent = self
else:
widget = qt.QWidget(parent=self)
parent = widget
qLabel = qt.QLabel(statistic.name + ':', parent=parent)
qLineEdit = qt.QLineEdit('', parent=parent)
qLineEdit.setReadOnly(True)
self._addStatsWidgetsToLayout(qLabel=qLabel, qLineEdit=qLineEdit)
self._statQlineEdit[statistic.name] = qLineEdit
def setPlot(self, plot):
"""Define the plot to interact with
:param Union[PlotWidget,SceneWidget,None] plot:
The plot containing the items on which statistics are applied
"""
_StatsWidgetBase.setPlot(self, plot)
self._updateAllStats()
def _addStatsWidgetsToLayout(self, qLabel, qLineEdit):
raise NotImplementedError('Base class')
def setStats(self, statsHandler):
"""Set which stats to display and the associated formatting.
:param StatsHandler statsHandler:
Set the statistics to be displayed and how to format them using
"""
_StatsWidgetBase.setStats(self, statsHandler)
for statName, stat in list(self._statsHandler.stats.items()):
self._addItemForStatistic(stat)
self._updateAllStats()
def _activeItemChanged(self, kind, previous, current):
if self.getUpdateMode() is UpdateMode.MANUAL:
return
if kind == self._item_kind:
self._updateAllStats()
def _updateAllStats(self):
plot = self.getPlot()
if plot is not None:
_items = self._plotWrapper.getSelectedItems()
def kind_filter(_item):
return self._plotWrapper.getKind(_item) == self.getKind()
items = list(filter(kind_filter, _items))
assert len(items) in (0, 1)
if len(items) == 1:
self._setItem(items[0])
def setKind(self, kind):
"""Change the kind of active item to display
:param str kind: kind of item to display information for ('curve' ...)
"""
if self._item_kind != kind:
self._item_kind = kind
self._updateItemObserve()
def getKind(self):
"""
:return: kind of item we want to compute statistic for
:rtype: str
"""
return self._item_kind
def _setItem(self, item, data_changed=True):
if item is None:
for stat_name, stat_widget in self._statQlineEdit.items():
stat_widget.setText('')
elif (self._statsHandler is not None and len(
self._statsHandler.stats) > 0):
plot = self.getPlot()
if plot is not None:
statsValDict = self._statsHandler.calculate(item,
plot,
self._statsOnVisibleData,
data_changed=data_changed)
for statName, statVal in list(statsValDict.items()):
self._statQlineEdit[statName].setText(statVal)
def _updateItemObserve(self, *argv):
if self.getUpdateMode() is UpdateMode.MANUAL:
return
assert self._displayOnlyActItem
_items = self._plotWrapper.getSelectedItems()
def kind_filter(_item):
return self._plotWrapper.getKind(_item) == self.getKind()
items = list(filter(kind_filter, _items))
assert len(items) in (0, 1)
_item = items[0] if len(items) == 1 else None
self._setItem(_item, data_changed=True)
def _updateCurrentItem(self):
self._updateItemObserve()
def _createLayout(self):
"""create an instance of the main QLayout"""
raise NotImplementedError('Base class')
def _addItem(self, item):
raise NotImplementedError('Display only the active item')
def _removeItem(self, item):
raise NotImplementedError('Display only the active item')
def _plotCurrentChanged(self, current):
raise NotImplementedError('Display only the active item')
def _updateModeHasChanged(self):
self.sigUpdateModeChanged.emit(self._updateMode)
class _BasicLineStatsWidget(_BaseLineStatsWidget):
def __init__(self, parent=None, plot=None, kind='curve',
stats=DEFAULT_STATS, statsOnVisibleData=False):
_BaseLineStatsWidget.__init__(self, parent=parent, kind=kind,
plot=plot, stats=stats,
statsOnVisibleData=statsOnVisibleData)
def _createLayout(self):
return FlowLayout()
def _addStatsWidgetsToLayout(self, qLabel, qLineEdit):
# create a mother widget to make sure both qLabel & qLineEdit will
# always be displayed side by side
widget = qt.QWidget(parent=self)
widget.setLayout(qt.QHBoxLayout())
widget.layout().setSpacing(0)
widget.layout().setContentsMargins(0, 0, 0, 0)
widget.layout().addWidget(qLabel)
widget.layout().addWidget(qLineEdit)
self.layout().addWidget(widget)
def _addOptionsWidget(self, widget):
self.layout().addWidget(widget)
class _BasicGridStatsWidget(_BaseLineStatsWidget):
def __init__(self, parent=None, plot=None, kind='curve',
stats=DEFAULT_STATS, statsOnVisibleData=False,
statsPerLine=4):
_BaseLineStatsWidget.__init__(self, parent=parent, kind=kind,
plot=plot, stats=stats,
statsOnVisibleData=statsOnVisibleData)
self._n_statistics_per_line = statsPerLine
def _addStatsWidgetsToLayout(self, qLabel, qLineEdit):
column = len(self._statQlineEdit) % self._n_statistics_per_line
row = len(self._statQlineEdit) // self._n_statistics_per_line
self.layout().addWidget(qLabel, row, column * 2)
self.layout().addWidget(qLineEdit, row, column * 2 + 1)
def _createLayout(self):
return qt.QGridLayout()
