def create_controls(self):
table = QTableView(self)
self.model = PluginsModel(self.plugin_manager)
table.setModel(self.model)
h = table.horizontalHeader()
h.setSectionResizeMode(QHeaderView.ResizeToContents)
table.setHorizontalHeader(h)
h = table.verticalHeader()
h.setSectionResizeMode(QHeaderView.ResizeToContents)
table.setVerticalHeader(h)
self.table = table
width = 80
for i in range(3):
width += table.columnWidth(i)
btns = QDialogButtonBox(QDialogButtonBox.Ok | QDialogButtonBox.Cancel,
Qt.Horizontal)
self.edit_btn = QPushButton("Edit")
btns.addButton(self.edit_btn, QDialogButtonBox.ActionRole)
self.edit_btn.clicked.connect(self.edit_plugin)
btns.accepted.connect(self.accept)
btns.rejected.connect(self.reject)
vbox = QVBoxLayout()
vbox.addWidget(table)
vbox.addWidget(btns)
self.setLayout(vbox)
s = self.size()
s.setHeight(table.rowHeight(0) * 10)
s.setWidth(width)
self.resize(s)
def create_controls(self):
table = QTableView(self)
self.model = PluginsModel(self.plugin_manager)
table.setModel(self.model)
h = table.horizontalHeader()
h.setSectionResizeMode(QHeaderView.ResizeToContents)
table.setHorizontalHeader(h)
h = table.verticalHeader()
h.setSectionResizeMode(QHeaderView.ResizeToContents)
table.setVerticalHeader(h)
self.table = table
width = 80
for i in range(3):
width += table.columnWidth(i)
btns = QDialogButtonBox(QDialogButtonBox.Ok | QDialogButtonBox.Cancel,
Qt.Horizontal)
self.edit_btn = QPushButton("Edit")
btns.addButton(self.edit_btn, QDialogButtonBox.ActionRole)
self.edit_btn.clicked.connect(self.edit_plugin)
btns.accepted.connect(self.accept)
btns.rejected.connect(self.reject)
vbox = QVBoxLayout()
vbox.addWidget(table)
vbox.addWidget(btns)
self.setLayout(vbox)
s = self.size()
s.setHeight(table.rowHeight(0) * 10)
s.setWidth(width)
self.resize(s)
class MxDataWidget(QWidget):
"""
Dialog for displaying and editing DataFrame and related objects.
Based on the gtabview project (ExtTableView).
For more information please see:
https://github.com/wavexx/gtabview/blob/master/gtabview/viewer.py
Signals
-------
sig_option_changed(str, object): Raised if an option is changed.
Arguments are name of option and its new value.
"""
sig_option_changed = Signal(str, object)
def __init__(self, parent=None, data=DataFrame()):
QWidget.__init__(self, parent)
# Destroying the C++ object right after closing the dialog box,
# otherwise it may be garbage-collected in another QThread
# (e.g. the editor's analysis thread in Spyder), thus leading to
# a segmentation fault on UNIX or an application crash on Windows
self.setAttribute(Qt.WA_DeleteOnClose)
self.is_series = False
self.layout = None
self.setup_and_check(data)
def setup_and_check(self, data, title=''):
"""
Setup DataFrameEditor:
return False if data is not supported, True otherwise.
Supported types for data are DataFrame, Series and Index.
"""
self._selection_rec = False
self._model = None
self.layout = QGridLayout()
self.layout.setSpacing(0)
self.layout.setContentsMargins(0, 0, 0, 0)
self.setLayout(self.layout)
self.setWindowIcon(ima.icon('arredit'))
if title:
title = to_text_string(title) + " - %s" % data.__class__.__name__
else:
title = _("%s editor") % data.__class__.__name__
if isinstance(data, Series):
self.is_series = True
data = data.to_frame()
elif isinstance(data, Index):
data = DataFrame(data)
self.setWindowTitle(title)
# self.resize(600, 500)
self.hscroll = QScrollBar(Qt.Horizontal)
self.vscroll = QScrollBar(Qt.Vertical)
# Create the view for the level
self.create_table_level()
# Create the view for the horizontal header
self.create_table_header()
# Create the view for the vertical index
self.create_table_index()
# Create the model and view of the data
self.dataModel = MxDataModel(data, parent=self)
# self.dataModel.dataChanged.connect(self.save_and_close_enable)
self.create_data_table()
self.layout.addWidget(self.hscroll, 2, 0, 1, 2)
self.layout.addWidget(self.vscroll, 0, 2, 2, 1)
# autosize columns on-demand
self._autosized_cols = set()
self._max_autosize_ms = None
self.dataTable.installEventFilter(self)
avg_width = self.fontMetrics().averageCharWidth()
self.min_trunc = avg_width * 8 # Minimum size for columns
self.max_width = avg_width * 64 # Maximum size for columns
self.setLayout(self.layout)
# Make the dialog act as a window
# self.setWindowFlags(Qt.Window)
self.setModel(self.dataModel)
self.resizeColumnsToContents()
return True
def create_table_level(self):
"""Create the QTableView that will hold the level model."""
self.table_level = QTableView()
self.table_level.setEditTriggers(QTableWidget.NoEditTriggers)
self.table_level.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.table_level.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.table_level.setFrameStyle(QFrame.Plain)
self.table_level.horizontalHeader().sectionResized.connect(
self._index_resized)
self.table_level.verticalHeader().sectionResized.connect(
self._header_resized)
# self.table_level.setItemDelegate(QItemDelegate())
self.layout.addWidget(self.table_level, 0, 0)
self.table_level.setContentsMargins(0, 0, 0, 0)
self.table_level.horizontalHeader().sectionClicked.connect(
self.sortByIndex)
def create_table_header(self):
"""Create the QTableView that will hold the header model."""
self.table_header = QTableView()
self.table_header.verticalHeader().hide()
self.table_header.setEditTriggers(QTableWidget.NoEditTriggers)
self.table_header.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.table_header.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.table_header.setHorizontalScrollMode(QTableView.ScrollPerPixel)
self.table_header.setHorizontalScrollBar(self.hscroll)
self.table_header.setFrameStyle(QFrame.Plain)
self.table_header.horizontalHeader().sectionResized.connect(
self._column_resized)
# self.table_header.setItemDelegate(QItemDelegate())
self.layout.addWidget(self.table_header, 0, 1)
def create_table_index(self):
"""Create the QTableView that will hold the index model."""
self.table_index = QTableView()
self.table_index.horizontalHeader().hide()
self.table_index.setEditTriggers(QTableWidget.NoEditTriggers)
self.table_index.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.table_index.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.table_index.setVerticalScrollMode(QTableView.ScrollPerPixel)
self.table_index.setVerticalScrollBar(self.vscroll)
self.table_index.setFrameStyle(QFrame.Plain)
self.table_index.verticalHeader().sectionResized.connect(
self._row_resized)
# self.table_index.setItemDelegate(QItemDelegate())
self.layout.addWidget(self.table_index, 1, 0)
self.table_index.setContentsMargins(0, 0, 0, 0)
def create_data_table(self):
"""Create the QTableView that will hold the data model."""
self.dataTable = MxDataTable(self, self.dataModel,
self.table_header.horizontalHeader(),
self.hscroll, self.vscroll)
self.dataTable.verticalHeader().hide()
self.dataTable.horizontalHeader().hide()
self.dataTable.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.dataTable.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.dataTable.setHorizontalScrollMode(QTableView.ScrollPerPixel)
self.dataTable.setVerticalScrollMode(QTableView.ScrollPerPixel)
self.dataTable.setFrameStyle(QFrame.Plain)
# self.dataTable.setItemDelegate(QItemDelegate())
self.layout.addWidget(self.dataTable, 1, 1)
self.setFocusProxy(self.dataTable)
self.dataTable.sig_sort_by_column.connect(self._sort_update)
self.dataTable.sig_fetch_more_columns.connect(self._fetch_more_columns)
self.dataTable.sig_fetch_more_rows.connect(self._fetch_more_rows)
def sortByIndex(self, index):
"""Implement a Index sort."""
self.table_level.horizontalHeader().setSortIndicatorShown(True)
sort_order = self.table_level.horizontalHeader().sortIndicatorOrder()
self.table_index.model().sort(index, sort_order)
self._sort_update()
def model(self):
"""Get the model of the dataframe."""
return self._model
def _column_resized(self, col, old_width, new_width):
"""Update the column width."""
self.dataTable.setColumnWidth(col, new_width)
self._update_layout()
def _row_resized(self, row, old_height, new_height):
"""Update the row height."""
self.dataTable.setRowHeight(row, new_height)
self._update_layout()
def _index_resized(self, col, old_width, new_width):
"""Resize the corresponding column of the index section selected."""
self.table_index.setColumnWidth(col, new_width)
self._update_layout()
def _header_resized(self, row, old_height, new_height):
"""Resize the corresponding row of the header section selected."""
self.table_header.setRowHeight(row, new_height)
self._update_layout()
def _update_layout(self):
"""Set the width and height of the QTableViews and hide rows."""
h_width = max(self.table_level.verticalHeader().sizeHint().width(),
self.table_index.verticalHeader().sizeHint().width())
self.table_level.verticalHeader().setFixedWidth(h_width)
self.table_index.verticalHeader().setFixedWidth(h_width)
last_row = self._model.header_shape[0] - 1
if last_row < 0:
hdr_height = self.table_level.horizontalHeader().height()
else:
# Check if the header shape has only one row (which display the
# same info than the horizontal header).
if last_row == 0:
self.table_level.setRowHidden(0, True)
self.table_header.setRowHidden(0, True)
else:
self.table_level.setRowHidden(0, False)
self.table_header.setRowHidden(0, False)
hdr_height = self.table_level.rowViewportPosition(last_row) + \
self.table_level.rowHeight(last_row) + \
self.table_level.horizontalHeader().height()
self.table_header.setFixedHeight(hdr_height)
self.table_level.setFixedHeight(hdr_height)
last_col = self._model.header_shape[1] - 1
if last_col < 0:
idx_width = self.table_level.verticalHeader().width()
else:
idx_width = self.table_level.columnViewportPosition(last_col) + \
self.table_level.columnWidth(last_col) + \
self.table_level.verticalHeader().width()
self.table_index.setFixedWidth(idx_width)
self.table_level.setFixedWidth(idx_width)
self._resizeVisibleColumnsToContents()
def _reset_model(self, table, model):
"""Set the model in the given table."""
old_sel_model = table.selectionModel()
table.setModel(model)
if old_sel_model:
del old_sel_model
def setAutosizeLimit(self, limit_ms):
"""Set maximum size for columns."""
self._max_autosize_ms = limit_ms
def setModel(self, model, relayout=True):
"""Set the model for the data, header/index and level views."""
self._model = model
# sel_model = self.dataTable.selectionModel()
# sel_model.currentColumnChanged.connect(
# self._resizeCurrentColumnToContents)
self._reset_model(self.dataTable, model)
# Asociate the models (level, vertical index and horizontal header)
# with its corresponding view.
self._reset_model(
self.table_level,
DataFrameLevelModel(model, self.palette(), self.font()))
self._reset_model(self.table_header,
DataFrameHeaderModel(model, 0, self.palette()))
self._reset_model(self.table_index,
DataFrameHeaderModel(model, 1, self.palette()))
# Needs to be called after setting all table models
if relayout:
self._update_layout()
def setCurrentIndex(self, y, x):
"""Set current selection."""
self.dataTable.selectionModel().setCurrentIndex(
self.dataTable.model().index(y, x),
QItemSelectionModel.ClearAndSelect)
def _sizeHintForColumn(self, table, col, limit_ms=None):
"""Get the size hint for a given column in a table."""
max_row = table.model().rowCount()
lm_start = time.perf_counter()
lm_row = 64 if limit_ms else max_row
max_width = 0
for row in range(max_row):
v = table.sizeHintForIndex(table.model().index(row, col))
max_width = max(max_width, v.width())
if row > lm_row:
lm_now = time.perf_counter()
lm_elapsed = (lm_now - lm_start) * 1000
if lm_elapsed >= limit_ms:
break
lm_row = int((row / lm_elapsed) * limit_ms)
return max_width
def _resizeColumnToContents(self, header, data, col, limit_ms):
"""Resize a column by its contents."""
hdr_width = self._sizeHintForColumn(header, col, limit_ms)
data_width = self._sizeHintForColumn(data, col, limit_ms)
if data_width > hdr_width:
width = min(self.max_width, data_width)
elif hdr_width > data_width * 2:
width = max(min(hdr_width, self.min_trunc),
min(self.max_width, data_width))
else:
width = min(self.max_width, hdr_width)
header.setColumnWidth(col, width)
def _resizeColumnsToContents(self, header, data, limit_ms):
"""Resize all the colummns to its contents."""
max_col = data.model().columnCount()
if limit_ms is None:
max_col_ms = None
else:
max_col_ms = limit_ms / max(1, max_col)
for col in range(max_col):
self._resizeColumnToContents(header, data, col, max_col_ms)
def eventFilter(self, obj, event):
"""Override eventFilter to catch resize event."""
if obj == self.dataTable and event.type() == QEvent.Resize:
self._resizeVisibleColumnsToContents()
return False
def _resizeVisibleColumnsToContents(self):
"""Resize the columns that are in the view."""
index_column = self.dataTable.rect().topLeft().x()
start = col = self.dataTable.columnAt(index_column)
width = self._model.shape[1]
end = self.dataTable.columnAt(self.dataTable.rect().bottomRight().x())
end = width if end == -1 else end + 1
if self._max_autosize_ms is None:
max_col_ms = None
else:
max_col_ms = self._max_autosize_ms / max(1, end - start)
while col < end:
resized = False
if col not in self._autosized_cols:
self._autosized_cols.add(col)
resized = True
self._resizeColumnToContents(self.table_header, self.dataTable,
col, max_col_ms)
col += 1
if resized:
# As we resize columns, the boundary will change
index_column = self.dataTable.rect().bottomRight().x()
end = self.dataTable.columnAt(index_column)
end = width if end == -1 else end + 1
if max_col_ms is not None:
max_col_ms = self._max_autosize_ms / max(1, end - start)
def _resizeCurrentColumnToContents(self, new_index, old_index):
"""Resize the current column to its contents."""
if new_index.column() not in self._autosized_cols:
# Ensure the requested column is fully into view after resizing
self._resizeVisibleColumnsToContents()
self.dataTable.scrollTo(new_index)
def resizeColumnsToContents(self):
"""Resize the columns to its contents."""
self._autosized_cols = set()
self._resizeColumnsToContents(self.table_level, self.table_index,
self._max_autosize_ms)
self._update_layout()
self.table_level.resizeColumnsToContents()
def change_format(self):
"""
Ask user for display format for floats and use it.
This function also checks whether the format is valid and emits
`sig_option_changed`.
"""
format, valid = QInputDialog.getText(self, _('Format'),
_("Float formatting"),
QLineEdit.Normal,
self.dataModel.get_format())
if valid:
format = str(format)
try:
format % 1.1
except:
msg = _("Format ({}) is incorrect").format(format)
QMessageBox.critical(self, _("Error"), msg)
return
if not format.startswith('%'):
msg = _("Format ({}) should start with '%'").format(format)
QMessageBox.critical(self, _("Error"), msg)
return
self.dataModel.set_format(format)
self.sig_option_changed.emit('dataframe_format', format)
def get_value(self):
"""Return modified Dataframe -- this is *not* a copy"""
# It is import to avoid accessing Qt C++ object as it has probably
# already been destroyed, due to the Qt.WA_DeleteOnClose attribute
df = self.dataModel.get_data()
if self.is_series:
return df.iloc[:, 0]
else:
return df
def _update_header_size(self):
"""Update the column width of the header."""
column_count = self.table_header.model().columnCount()
for index in range(0, column_count):
if index < column_count:
column_width = self.dataTable.columnWidth(index)
self.table_header.setColumnWidth(index, column_width)
else:
break
def _sort_update(self):
"""
Update the model for all the QTableView objects.
Uses the model of the dataTable as the base.
"""
self.setModel(self.dataTable.model())
def _fetch_more_columns(self):
"""Fetch more data for the header (columns)."""
self.table_header.model().fetch_more()
def _fetch_more_rows(self):
"""Fetch more data for the index (rows)."""
self.table_index.model().fetch_more()
def resize_to_contents(self):
QApplication.setOverrideCursor(QCursor(Qt.WaitCursor))
self.dataTable.resizeColumnsToContents()
self.dataModel.fetch_more(columns=True)
self.dataTable.resizeColumnsToContents()
self._update_header_size()
QApplication.restoreOverrideCursor()
# --- mx specific ---
def process_remote_view(self, data):
if data is None:
data = DataFrame() # Empty DataFrame
self.setModel(MxDataModel(data, parent=self))
