# -*- coding: utf-8 -*-
#
# Copyright © Spyder Project Contributors
# Licensed under the terms of the MIT License
# (see spyder/__init__.py for details)
"""
NumPy Array Editor Dialog based on Qt
"""
# pylint: disable=C0103
# pylint: disable=R0903
# pylint: disable=R0911
# pylint: disable=R0201
# Standard library imports
import io
# Third party imports
from qtpy.compat import from_qvariant, to_qvariant
from qtpy.QtCore import (QAbstractTableModel, QItemSelection, QLocale,
QItemSelectionRange, QModelIndex, Qt, Slot)
from qtpy.QtGui import QColor, QCursor, QDoubleValidator, QKeySequence
from qtpy.QtWidgets import (QAbstractItemDelegate, QApplication, QCheckBox,
QComboBox, QDialog, QGridLayout, QHBoxLayout,
QInputDialog, QItemDelegate, QLabel, QLineEdit,
QMenu, QMessageBox, QPushButton, QSpinBox,
QStackedWidget, QTableView, QVBoxLayout,
QWidget)
from spyder_kernels.utils.nsview import value_to_display
from spyder_kernels.utils.lazymodules import numpy as np
# Local imports
from spyder.config.base import _
from spyder.config.fonts import DEFAULT_SMALL_DELTA
from spyder.config.gui import get_font
from spyder.config.manager import CONF
from spyder.py3compat import (is_binary_string, is_string, is_text_string,
to_binary_string, to_text_string)
from spyder.utils.icon_manager import ima
from spyder.utils.qthelpers import add_actions, create_action, keybinding
from spyder.plugins.variableexplorer.widgets.basedialog import BaseDialog
# Note: string and unicode data types will be formatted with '%s' (see below)
SUPPORTED_FORMATS = {
'single': '%.6g',
'double': '%.6g',
'float_': '%.6g',
'longfloat': '%.6g',
'float16': '%.6g',
'float32': '%.6g',
'float64': '%.6g',
'float96': '%.6g',
'float128': '%.6g',
'csingle': '%r',
'complex_': '%r',
'clongfloat': '%r',
'complex64': '%r',
'complex128': '%r',
'complex192': '%r',
'complex256': '%r',
'byte': '%d',
'bytes8': '%s',
'short': '%d',
'intc': '%d',
'int_': '%d',
'longlong': '%d',
'intp': '%d',
'int8': '%d',
'int16': '%d',
'int32': '%d',
'int64': '%d',
'ubyte': '%d',
'ushort': '%d',
'uintc': '%d',
'uint': '%d',
'ulonglong': '%d',
'uintp': '%d',
'uint8': '%d',
'uint16': '%d',
'uint32': '%d',
'uint64': '%d',
'bool_': '%r',
'bool8': '%r',
'bool': '%r',
}
LARGE_SIZE = 5e5
LARGE_NROWS = 1e5
LARGE_COLS = 60
#==============================================================================
# Utility functions
#==============================================================================
def is_float(dtype):
"""Return True if datatype dtype is a float kind"""
return ('float' in dtype.name) or dtype.name in ['single', 'double']
def is_number(dtype):
"""Return True is datatype dtype is a number kind"""
return is_float(dtype) or ('int' in dtype.name) or ('long' in dtype.name) \
or ('short' in dtype.name)
def get_idx_rect(index_list):
"""Extract the boundaries from a list of indexes"""
rows, cols = list(zip(*[(i.row(), i.column()) for i in index_list]))
return ( min(rows), max(rows), min(cols), max(cols) )
#==============================================================================
# Main classes
#==============================================================================
class ArrayModel(QAbstractTableModel):
"""Array Editor Table Model"""
ROWS_TO_LOAD = 500
COLS_TO_LOAD = 40
def __init__(self, data, format="%.6g", xlabels=None, ylabels=None,
readonly=False, parent=None):
QAbstractTableModel.__init__(self)
self.dialog = parent
self.changes = {}
self.xlabels = xlabels
self.ylabels = ylabels
self.readonly = readonly
self.test_array = np.array([0], dtype=data.dtype)
# for complex numbers, shading will be based on absolute value
# but for all other types it will be the real part
if data.dtype in (np.complex64, np.complex128):
self.color_func = np.abs
else:
self.color_func = np.real
# Backgroundcolor settings
huerange = [.66, .99] # Hue
self.sat = .7 # Saturation
self.val = 1. # Value
self.alp = .6 # Alpha-channel
self._data = data
self._format = format
self.total_rows = self._data.shape[0]
self.total_cols = self._data.shape[1]
size = self.total_rows * self.total_cols
if not self._data.dtype.name == 'object':
try:
self.vmin = np.nanmin(self.color_func(data))
self.vmax = np.nanmax(self.color_func(data))
if self.vmax == self.vmin:
self.vmin -= 1
self.hue0 = huerange[0]
self.dhue = huerange[1]-huerange[0]
self.bgcolor_enabled = True
except (AttributeError, TypeError, ValueError):
self.vmin = None
self.vmax = None
self.hue0 = None
self.dhue = None
self.bgcolor_enabled = False
# Array with infinite values cannot display background colors and
# crashes. See: spyder-ide/spyder#8093
self.has_inf = False
if data.dtype.kind in ['f', 'c']:
self.has_inf = np.any(np.isinf(data))
# Deactivate coloring for object arrays or arrays with inf values
if self._data.dtype.name == 'object' or self.has_inf:
self.bgcolor_enabled = False
# Use paging when the total size, number of rows or number of
# columns is too large
if size > LARGE_SIZE:
self.rows_loaded = self.ROWS_TO_LOAD
self.cols_loaded = self.COLS_TO_LOAD
else:
if self.total_rows > LARGE_NROWS:
self.rows_loaded = self.ROWS_TO_LOAD
else:
self.rows_loaded = self.total_rows
if self.total_cols > LARGE_COLS:
self.cols_loaded = self.COLS_TO_LOAD
else:
self.cols_loaded = self.total_cols
def get_format(self):
"""Return current format"""
# Avoid accessing the private attribute _format from outside
return self._format
def get_data(self):
"""Return data"""
return self._data
def set_format(self, format):
"""Change display format"""
self._format = format
self.reset()
def columnCount(self, qindex=QModelIndex()):
"""Array column number"""
if self.total_cols <= self.cols_loaded:
return self.total_cols
else:
return self.cols_loaded
def rowCount(self, qindex=QModelIndex()):
"""Array row number"""
if self.total_rows <= self.rows_loaded:
return self.total_rows
else:
return self.rows_loaded
def can_fetch_more(self, rows=False, columns=False):
if rows:
if self.total_rows > self.rows_loaded:
return True
else:
return False
if columns:
if self.total_cols > self.cols_loaded:
return True
else:
return False
def fetch_more(self, rows=False, columns=False):
if self.can_fetch_more(rows=rows):
reminder = self.total_rows - self.rows_loaded
items_to_fetch = min(reminder, self.ROWS_TO_LOAD)
self.beginInsertRows(QModelIndex(), self.rows_loaded,
self.rows_loaded + items_to_fetch - 1)
self.rows_loaded += items_to_fetch
self.endInsertRows()
if self.can_fetch_more(columns=columns):
reminder = self.total_cols - self.cols_loaded
items_to_fetch = min(reminder, self.COLS_TO_LOAD)
self.beginInsertColumns(QModelIndex(), self.cols_loaded,
self.cols_loaded + items_to_fetch - 1)
self.cols_loaded += items_to_fetch
self.endInsertColumns()
def bgcolor(self, state):
"""Toggle backgroundcolor"""
self.bgcolor_enabled = state > 0
self.reset()
def get_value(self, index):
i = index.row()
j = index.column()
if len(self._data.shape) == 1:
value = self._data[j]
else:
value = self._data[i, j]
return self.changes.get((i, j), value)
def data(self, index, role=Qt.DisplayRole):
"""Cell content."""
if not index.isValid():
return to_qvariant()
value = self.get_value(index)
dtn = self._data.dtype.name
# Tranform binary string to unicode so they are displayed
# correctly
if is_binary_string(value):
try:
value = to_text_string(value, 'utf8')
except Exception:
pass
# Handle roles
if role == Qt.DisplayRole:
if value is np.ma.masked:
return ''
else:
if dtn == 'object':
# We don't know what's inside an object array, so
# we can't trust value repr's here.
return value_to_display(value)
else:
try:
return to_qvariant(self._format % value)
except TypeError:
self.readonly = True
return repr(value)
elif role == Qt.TextAlignmentRole:
return to_qvariant(int(Qt.AlignCenter|Qt.AlignVCenter))
elif (role == Qt.BackgroundColorRole and self.bgcolor_enabled
and value is not np.ma.masked and not self.has_inf):
try:
hue = (self.hue0 +
self.dhue * (float(self.vmax) - self.color_func(value))
/ (float(self.vmax) - self.vmin))
hue = float(np.abs(hue))
color = QColor.fromHsvF(hue, self.sat, self.val, self.alp)
return to_qvariant(color)
except (TypeError, ValueError):
return to_qvariant()
elif role == Qt.FontRole:
return to_qvariant(get_font(font_size_delta=DEFAULT_SMALL_DELTA))
return to_qvariant()
def setData(self, index, value, role=Qt.EditRole):
"""Cell content change"""
if not index.isValid() or self.readonly:
return False
i = index.row()
j = index.column()
value = from_qvariant(value, str)
dtype = self._data.dtype.name
if dtype == "bool":
try:
val = bool(float(value))
except ValueError:
val = value.lower() == "true"
elif dtype.startswith("string") or dtype.startswith("bytes"):
val = to_binary_string(value, 'utf8')
elif dtype.startswith("unicode") or dtype.startswith("str"):
val = to_text_string(value)
else:
if value.lower().startswith('e') or value.lower().endswith('e'):
return False
try:
val = complex(value)
if not val.imag:
val = val.real
except ValueError as e:
QMessageBox.critical(self.dialog, "Error",
"Value error: %s" % str(e))
return False
try:
self.test_array[0] = val # will raise an Exception eventually
except OverflowError as e:
print("OverflowError: " + str(e)) # spyder: test-skip
QMessageBox.critical(self.dialog, "Error",
"Overflow error: %s" % str(e))
return False
# Add change to self.changes
self.changes[(i, j)] = val
self.dataChanged.emit(index, index)
if not is_string(val):
val = self.color_func(val)
if val > self.vmax:
self.vmax = val
if val < self.vmin:
self.vmin = val
return True
def flags(self, index):
"""Set editable flag"""
if not index.isValid():
return Qt.ItemIsEnabled
return Qt.ItemFlags(int(QAbstractTableModel.flags(self, index) |
Qt.ItemIsEditable))
def headerData(self, section, orientation, role=Qt.DisplayRole):
"""Set header data"""
if role != Qt.DisplayRole:
return to_qvariant()
labels = self.xlabels if orientation == Qt.Horizontal else self.ylabels
if labels is None:
return to_qvariant(int(section))
else:
return to_qvariant(labels[section])
def reset(self):
self.beginResetModel()
self.endResetModel()
class ArrayDelegate(QItemDelegate):
"""Array Editor Item Delegate"""
def __init__(self, dtype, parent=None):
QItemDelegate.__init__(self, parent)
self.dtype = dtype
def createEditor(self, parent, option, index):
"""Create editor widget"""
model = index.model()
value = model.get_value(index)
if type(value) == np.ndarray or model.readonly:
# The editor currently cannot properly handle this case
return
elif model._data.dtype.name == "bool":
value = not value
model.setData(index, to_qvariant(value))
return
elif value is not np.ma.masked:
editor = QLineEdit(parent)
editor.setFont(get_font(font_size_delta=DEFAULT_SMALL_DELTA))
editor.setAlignment(Qt.AlignCenter)
if is_number(self.dtype):
validator = QDoubleValidator(editor)
validator.setLocale(QLocale('C'))
editor.setValidator(validator)
editor.returnPressed.connect(self.commitAndCloseEditor)
return editor
def commitAndCloseEditor(self):
"""Commit and close editor"""
editor = self.sender()
# Avoid a segfault with PyQt5. Variable value won't be changed
# but at least Spyder won't crash. It seems generated by a bug in sip.
try:
self.commitData.emit(editor)
except AttributeError:
pass
self.closeEditor.emit(editor, QAbstractItemDelegate.NoHint)
def setEditorData(self, editor, index):
"""Set editor widget's data"""
text = from_qvariant(index.model().data(index, Qt.DisplayRole), str)
editor.setText(text)
#TODO: Implement "Paste" (from clipboard) feature
class ArrayView(QTableView):
"""Array view class"""
def __init__(self, parent, model, dtype, shape):
QTableView.__init__(self, parent)
self.setModel(model)
self.setItemDelegate(ArrayDelegate(dtype, self))
total_width = 0
for k in range(shape[1]):
total_width += self.columnWidth(k)
self.viewport().resize(min(total_width, 1024), self.height())
self.shape = shape
self.menu = self.setup_menu()
CONF.config_shortcut(
self.copy,
context='variable_explorer',
name='copy',
parent=self)
self.horizontalScrollBar().valueChanged.connect(
self._load_more_columns)
self.verticalScrollBar().valueChanged.connect(self._load_more_rows)
def _load_more_columns(self, value):
"""Load more columns to display."""
# Needed to avoid a NameError while fetching data when closing
# See spyder-ide/spyder#12034.
try:
self.load_more_data(value, columns=True)
except NameError:
pass
def _load_more_rows(self, value):
"""Load more rows to display."""
# Needed to avoid a NameError while fetching data when closing
# See spyder-ide/spyder#12034.
try:
self.load_more_data(value, rows=True)
except NameError:
pass
def load_more_data(self, value, rows=False, columns=False):
try:
old_selection = self.selectionModel().selection()
old_rows_loaded = old_cols_loaded = None
if rows and value == self.verticalScrollBar().maximum():
old_rows_loaded = self.model().rows_loaded
self.model().fetch_more(rows=rows)
if columns and value == self.horizontalScrollBar().maximum():
old_cols_loaded = self.model().cols_loaded
self.model().fetch_more(columns=columns)
if old_rows_loaded is not None or old_cols_loaded is not None:
# if we've changed anything, update selection
new_selection = QItemSelection()
for part in old_selection:
top = part.top()
bottom = part.bottom()
if (old_rows_loaded is not None and
top == 0 and bottom == (old_rows_loaded-1)):
# complete column selected (so expand it to match
# updated range)
bottom = self.model().rows_loaded-1
left = part.left()
right = part.right()
if (old_cols_loaded is not None
and left == 0 and right == (old_cols_loaded-1)):
# compete row selected (so expand it to match updated
# range)
right = self.model().cols_loaded-1
top_left = self.model().index(top, left)
bottom_right = self.model().index(bottom, right)
part = QItemSelectionRange(top_left, bottom_right)
new_selection.append(part)
self.selectionModel().select(
new_selection, self.selectionModel().ClearAndSelect)
except NameError:
# Needed to handle a NameError while fetching data when closing
# See isue 7880
pass
@Slot()
def resize_to_contents(self):
"""Resize cells to contents"""
QApplication.setOverrideCursor(QCursor(Qt.WaitCursor))
self.resizeColumnsToContents()
self.model().fetch_more(columns=True)
self.resizeColumnsToContents()
QApplication.restoreOverrideCursor()
def setup_menu(self):
"""Setup context menu"""
self.copy_action = create_action(self, _('Copy'),
shortcut=keybinding('Copy'),
icon=ima.icon('editcopy'),
triggered=self.copy,
context=Qt.WidgetShortcut)
menu = QMenu(self)
add_actions(menu, [self.copy_action, ])
return menu
def contextMenuEvent(self, event):
"""Reimplement Qt method"""
self.menu.popup(event.globalPos())
event.accept()
def keyPressEvent(self, event):
"""Reimplement Qt method"""
if event == QKeySequence.Copy:
self.copy()
else:
QTableView.keyPressEvent(self, event)
def _sel_to_text(self, cell_range):
"""Copy an array portion to a unicode string"""
if not cell_range:
return
row_min, row_max, col_min, col_max = get_idx_rect(cell_range)
if col_min == 0 and col_max == (self.model().cols_loaded-1):
# we've selected a whole column. It isn't possible to
# select only the first part of a column without loading more,
# so we can treat it as intentional and copy the whole thing
col_max = self.model().total_cols-1
if row_min == 0 and row_max == (self.model().rows_loaded-1):
row_max = self.model().total_rows-1
_data = self.model().get_data()
output = io.BytesIO()
try:
np.savetxt(output, _data[row_min:row_max+1, col_min:col_max+1],
delimiter='\t', fmt=self.model().get_format())
except:
QMessageBox.warning(self, _("Warning"),
_("It was not possible to copy values for "
"this array"))
return
contents = output.getvalue().decode('utf-8')
output.close()
return contents
@Slot()
def copy(self):
"""Copy text to clipboard"""
cliptxt = self._sel_to_text( self.selectedIndexes() )
clipboard = QApplication.clipboard()
clipboard.setText(cliptxt)
class ArrayEditorWidget(QWidget):
def __init__(self, parent, data, readonly=False,
xlabels=None, ylabels=None):
QWidget.__init__(self, parent)
self.data = data
self.old_data_shape = None
if len(self.data.shape) == 1:
self.old_data_shape = self.data.shape
self.data.shape = (self.data.shape[0], 1)
elif len(self.data.shape) == 0:
self.old_data_shape = self.data.shape
self.data.shape = (1, 1)
format = SUPPORTED_FORMATS.get(data.dtype.name, '%s')
self.model = ArrayModel(self.data, format=format, xlabels=xlabels,
ylabels=ylabels, readonly=readonly, parent=self)
self.view = ArrayView(self, self.model, data.dtype, data.shape)
layout = QVBoxLayout()
layout.addWidget(self.view)
self.setLayout(layout)
def accept_changes(self):
"""Accept changes"""
for (i, j), value in list(self.model.changes.items()):
self.data[i, j] = value
if self.old_data_shape is not None:
self.data.shape = self.old_data_shape
def reject_changes(self):
"""Reject changes"""
if self.old_data_shape is not None:
self.data.shape = self.old_data_shape
@Slot()
def change_format(self):
"""Change display format"""
format, valid = QInputDialog.getText(self, _( 'Format'),
_( "Float formatting"),
QLineEdit.Normal, self.model.get_format())
if valid:
format = str(format)
try:
format % 1.1
except:
QMessageBox.critical(self, _("Error"),
_("Format (%s) is incorrect") % format)
return
self.model.set_format(format)
class ArrayEditor(BaseDialog):
"""Array Editor Dialog"""
def __init__(self, parent=None):
super().__init__(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.data = None
self.arraywidget = None
self.stack = None
self.layout = None
self.btn_save_and_close = None
self.btn_close = None
# Values for 3d array editor
self.dim_indexes = [{}, {}, {}]
self.last_dim = 0 # Adjust this for changing the startup dimension
def setup_and_check(self, data, title='', readonly=False,
xlabels=None, ylabels=None):
"""
Setup ArrayEditor:
return False if data is not supported, True otherwise
"""
self.data = data
readonly = readonly or not self.data.flags.writeable
is_masked_array = isinstance(data, np.ma.MaskedArray)
# This is necessary in case users subclass ndarray and set the dtype
# to an object that is not an actual dtype.
# Fixes spyder-ide/spyder#20462
if hasattr(data.dtype, 'names'):
is_record_array = data.dtype.names is not None
else:
is_record_array = False
if data.ndim > 3:
self.error(_("Arrays with more than 3 dimensions are not "
"supported"))
return False
if xlabels is not None and len(xlabels) != self.data.shape[1]:
self.error(_("The 'xlabels' argument length do no match array "
"column number"))
return False
if ylabels is not None and len(ylabels) != self.data.shape[0]:
self.error(_("The 'ylabels' argument length do no match array row "
"number"))
return False
if not is_record_array:
# This is necessary in case users subclass ndarray and set the
# dtype to an object that is not an actual dtype.
# Fixes spyder-ide/spyder#20462
if hasattr(data.dtype, 'name'):
dtn = data.dtype.name
else:
dtn = 'Unknown'
if dtn == 'object':
# If the array doesn't have shape, we can't display it
if data.shape == ():
self.error(_("Object arrays without shape are not "
"supported"))
return False
# We don't know what's inside these arrays, so we can't handle
# edits
self.readonly = readonly = True
elif (dtn not in SUPPORTED_FORMATS and not dtn.startswith('str')
and not dtn.startswith('unicode')):
arr = _("%s arrays") % dtn
self.error(_("%s are currently not supported") % arr)
return False
self.layout = QGridLayout()
self.setLayout(self.layout)
if title:
title = to_text_string(title) + " - " + _("NumPy object array")
else:
title = _("Array editor")
if readonly:
title += ' (' + _('read only') + ')'
self.setWindowTitle(title)
# ---- Stack widget
self.stack = QStackedWidget(self)
if is_record_array:
for name in data.dtype.names:
self.stack.addWidget(ArrayEditorWidget(self, data[name],
readonly, xlabels,
ylabels))
elif is_masked_array:
self.stack.addWidget(ArrayEditorWidget(self, data, readonly,
xlabels, ylabels))
self.stack.addWidget(ArrayEditorWidget(self, data.data, readonly,
xlabels, ylabels))
self.stack.addWidget(ArrayEditorWidget(self, data.mask, readonly,
xlabels, ylabels))
elif data.ndim == 3:
# We create here the necessary widgets for current_dim_changed to
# work. The rest are created below.
# QSpinBox
self.index_spin = QSpinBox(self, keyboardTracking=False)
self.index_spin.valueChanged.connect(self.change_active_widget)
# Labels
self.shape_label = QLabel()
self.slicing_label = QLabel()
# Set the widget to display when launched
self.current_dim_changed(self.last_dim)
else:
self.stack.addWidget(ArrayEditorWidget(self, data, readonly,
xlabels, ylabels))
self.arraywidget = self.stack.currentWidget()
self.arraywidget.model.dataChanged.connect(self.save_and_close_enable)
self.stack.currentChanged.connect(self.current_widget_changed)
self.layout.addWidget(self.stack, 1, 0)
# ---- Top row of buttons
btn_layout_top = None
if is_record_array or is_masked_array or data.ndim == 3:
btn_layout_top = QHBoxLayout()
if is_record_array:
btn_layout_top.addWidget(QLabel(_("Record array fields:")))
names = []
for name in data.dtype.names:
field = data.dtype.fields[name]
text = name
if len(field) >= 3:
title = field[2]
if not is_text_string(title):
title = repr(title)
text += ' - '+title
names.append(text)
else:
names = [_('Masked data'), _('Data'), _('Mask')]
if data.ndim == 3:
# QComboBox
names = [str(i) for i in range(3)]
ra_combo = QComboBox(self)
ra_combo.addItems(names)
ra_combo.currentIndexChanged.connect(self.current_dim_changed)
# Adding the widgets to layout
label = QLabel(_("Axis:"))
btn_layout_top.addWidget(label)
btn_layout_top.addWidget(ra_combo)
btn_layout_top.addWidget(self.shape_label)
label = QLabel(_("Index:"))
btn_layout_top.addWidget(label)
btn_layout_top.addWidget(self.index_spin)
btn_layout_top.addWidget(self.slicing_label)
else:
ra_combo = QComboBox(self)
ra_combo.currentIndexChanged.connect(self.stack.setCurrentIndex)
ra_combo.addItems(names)
btn_layout_top.addWidget(ra_combo)
if is_masked_array:
label = QLabel(
_("Warning: Changes are applied separately")
)
label.setToolTip(_("For performance reasons, changes applied "
"to masked arrays won't be reflected in "
"array's data (and vice-versa)."))
btn_layout_top.addWidget(label)
btn_layout_top.addStretch()
# ---- Bottom row of buttons
btn_layout_bottom = QHBoxLayout()
btn_format = QPushButton(_("Format"))
# disable format button for int type
btn_format.setEnabled(is_float(self.arraywidget.data.dtype))
btn_layout_bottom.addWidget(btn_format)
btn_format.clicked.connect(self.arraywidget.change_format)
btn_resize = QPushButton(_("Resize"))
btn_layout_bottom.addWidget(btn_resize)
btn_resize.clicked.connect(self.arraywidget.view.resize_to_contents)
self.bgcolor = QCheckBox(_('Background color'))
self.bgcolor.setEnabled(self.arraywidget.model.bgcolor_enabled)
self.bgcolor.setChecked(self.arraywidget.model.bgcolor_enabled)
self.bgcolor.stateChanged.connect(
lambda state: self.arraywidget.model.bgcolor(state))
btn_layout_bottom.addWidget(self.bgcolor)
btn_layout_bottom.addStretch()
if not readonly:
self.btn_save_and_close = QPushButton(_('Save and Close'))
self.btn_save_and_close.setDisabled(True)
self.btn_save_and_close.clicked.connect(self.accept)
btn_layout_bottom.addWidget(self.btn_save_and_close)
self.btn_close = QPushButton(_('Close'))
self.btn_close.setAutoDefault(True)
self.btn_close.setDefault(True)
self.btn_close.clicked.connect(self.reject)
btn_layout_bottom.addWidget(self.btn_close)
# ---- Final layout
btn_layout_bottom.setContentsMargins(4, 4, 4, 4)
if btn_layout_top is not None:
btn_layout_top.setContentsMargins(4, 4, 4, 4)
self.layout.addLayout(btn_layout_top, 2, 0)
self.layout.addLayout(btn_layout_bottom, 3, 0)
else:
self.layout.addLayout(btn_layout_bottom, 2, 0)
# Set minimum size
self.setMinimumSize(500, 300)
# Make the dialog act as a window
self.setWindowFlags(Qt.Window)
return True
@Slot(QModelIndex, QModelIndex)
def save_and_close_enable(self, left_top, bottom_right):
"""Handle the data change event to enable the save and close button."""
if self.btn_save_and_close:
self.btn_save_and_close.setEnabled(True)
self.btn_save_and_close.setAutoDefault(True)
self.btn_save_and_close.setDefault(True)
def current_widget_changed(self, index):
self.arraywidget = self.stack.widget(index)
self.arraywidget.model.dataChanged.connect(self.save_and_close_enable)
self.bgcolor.setChecked(self.arraywidget.model.bgcolor_enabled)
def change_active_widget(self, index):
"""
This is implemented for handling negative values in index for
3d arrays, to give the same behavior as slicing
"""
string_index = [':']*3
string_index[self.last_dim] = '%i'
self.slicing_label.setText((r"Slicing: [" + ", ".join(string_index) +
"]") % index)
if index < 0:
data_index = self.data.shape[self.last_dim] + index
else:
data_index = index
slice_index = [slice(None)]*3
slice_index[self.last_dim] = data_index
stack_index = self.dim_indexes[self.last_dim].get(data_index)
if stack_index is None:
stack_index = self.stack.count()
try:
self.stack.addWidget(ArrayEditorWidget(
self, self.data[tuple(slice_index)]))
except IndexError: # Handle arrays of size 0 in one axis
self.stack.addWidget(ArrayEditorWidget(self, self.data))
self.dim_indexes[self.last_dim][data_index] = stack_index
self.stack.update()
self.stack.setCurrentIndex(stack_index)
def current_dim_changed(self, index):
"""
This change the active axis the array editor is plotting over
in 3D
"""
self.last_dim = index
string_size = ['%i']*3
string_size[index] = '%i'
self.shape_label.setText(('Shape: (' + ', '.join(string_size) +
') ') % self.data.shape)
if self.index_spin.value() != 0:
self.index_spin.setValue(0)
else:
# this is done since if the value is currently 0 it does not emit
# currentIndexChanged(int)
self.change_active_widget(0)
self.index_spin.setRange(-self.data.shape[index],
self.data.shape[index]-1)
@Slot()
def accept(self):
"""Reimplement Qt method."""
try:
for index in range(self.stack.count()):
self.stack.widget(index).accept_changes()
QDialog.accept(self)
except RuntimeError:
# Sometimes under CI testing the object the following error appears
# RuntimeError: wrapped C/C++ object has been deleted
pass
def get_value(self):
"""Return modified array -- this is *not* a copy"""
# It is important to avoid accessing Qt C++ object as it has probably
# already been destroyed, due to the Qt.WA_DeleteOnClose attribute
return self.data
def error(self, message):
"""An error occurred, closing the dialog box"""
QMessageBox.critical(self, _("Array editor"), message)
self.setAttribute(Qt.WA_DeleteOnClose)
self.reject()
@Slot()
def reject(self):
"""Reimplement Qt method"""
if self.arraywidget is not None:
for index in range(self.stack.count()):
self.stack.widget(index).reject_changes()
QDialog.reject(self)