def apply(self):
if not self.__dialog:
self.createDialog()
self.__datasource.applied = False
sourceType = unicode(self.__dialog.ui.typeComboBox.currentText())
self.__datasource.dataSourceName = unicode(
self.__dialog.ui.nameLineEdit.text())
if sourceType in self.__dialog.imp.keys():
self.__dialog.imp[sourceType].fromForm(self.__datasource)
self.__datasource.dataSourceType = sourceType
self.__datasource.doc = unicode(
self.__dialog.ui.docTextEdit.toPlainText()).strip()
index = QModelIndex()
if hasattr(self.__dialog, "view") and self.__dialog.view \
and self.__dialog.view.model():
if hasattr(self.__dialog.view, "currentIndex"):
index = self.__dialog.view.currentIndex()
finalIndex = self.__dialog.view.model().createIndex(
index.row(), 2,
index.parent().internalPointer())
self.__dialog.view.expand(index)
row = index.row()
column = index.column()
parent = index.parent()
if self.__dialog.root:
self.updateNode(index)
if index.isValid():
index = self.__dialog.view.model().index(row, column, parent)
self.__dialog.view.setCurrentIndex(index)
self.__dialog.view.expand(index)
if hasattr(self.__dialog, "view") and self.__dialog.view \
and self.__dialog.view.model():
self.__dialog.view.model().emit(
SIGNAL("dataChanged(const QModelIndex &,"
" const QModelIndex &)"), index.parent(),
index.parent())
if index.column() != 0:
index = self.__dialog.view.model().index(
index.row(), 0, index.parent())
self.__dialog.view.model().emit(
SIGNAL("dataChanged(const QModelIndex &,"
" const QModelIndex &)"), index, finalIndex)
self.__dialog.view.expand(index)
if not self.__datasource.tree:
self.createNodes()
self.__datasource.applied = True
return True
def sectionSizeFromContents(self, logicalIndex: int) -> QSize:
if self._pd.headerModel:
curLeafIndex = QModelIndex(self._pd.leafIndex(logicalIndex))
if curLeafIndex.isValid():
styleOption = QStyleOptionHeader(
self.styleOptionForCell(logicalIndex))
s = QSize(self._pd.cellSize(curLeafIndex, self, styleOption))
curLeafIndex = curLeafIndex.parent()
while curLeafIndex.isValid():
if self.orientation() == Qt.Horizontal:
s.setHeight(s.height() + self._pd.cellSize(
curLeafIndex, self, styleOption).height())
else:
s.setWidth(s.width() + self._pd.cellSize(
curLeafIndex, self, styleOption).width())
curLeafIndex = curLeafIndex.parent()
return s
return super().sectionSizeFromContents(logicalIndex)
def sectionSizeFromContents(self, logicalIndex: int)->QSize:
if self._pd.headerModel:
curLeafIndex = QModelIndex(self._pd.leafIndex(logicalIndex))
if curLeafIndex.isValid():
styleOption = QStyleOptionHeader(self.styleOptionForCell(logicalIndex))
s = QSize(self._pd.cellSize(curLeafIndex, self, styleOption))
curLeafIndex=curLeafIndex.parent()
while curLeafIndex.isValid():
if self.orientation() == Qt.Horizontal:
s.setHeight(s.height()+self._pd.cellSize(curLeafIndex, self, styleOption).height())
else:
s.setWidth(s.width()+self._pd.cellSize(curLeafIndex, self, styleOption).width())
curLeafIndex=curLeafIndex.parent()
return s
return super().sectionSizeFromContents(logicalIndex)
def paintSection(self, painter: QPainter, rect: QRect, logicalIndex: int):
if rect.isValid():
leafIndex = QModelIndex(self._pd.leafIndex(logicalIndex))
if leafIndex.isValid():
if self.orientation() == Qt.Horizontal:
self._pd.paintHorizontalSection(painter, rect, logicalIndex, self, self.styleOptionForCell(logicalIndex), leafIndex)
else:
self._pd.paintVerticalSection(painter, rect, logicalIndex, self, self.styleOptionForCell(logicalIndex), leafIndex)
return
super().paintSection(painter, rect, logicalIndex)
def on_sectionResized(self, logicalIndex: int):
if self.isSectionHidden(logicalIndex):
return
leafIndex = QModelIndex(self._pd.leafIndex(logicalIndex))
if leafIndex.isValid():
leafsList = QModelIndexList(self._pd.leafs(self._pd.findRootIndex(leafIndex)))
for n in range(leafsList.indexOf(leafIndex), 0, -1):
logicalIndex-=1
w = self.viewport().width()
h = self.viewport().height()
pos = self.sectionViewportPosition(logicalIndex)
r = QRect(pos, 0, w - pos, h)
if self.orientation() == Qt.Horizontal:
if self.isRightToLeft():
r.setRect(0, 0, pos + self.sectionSize(logicalIndex), h)
else:
r.setRect(0, pos, w, h - pos)
self.viewport().update(r.normalized())
def setModel(self, model):
super().setModel(model)
model.layoutChanged.connect(self.layoutChanged)
self.layoutChanged()
def layoutChanged(self):
if self.model():
self._pd.initFromNewModel(self.orientation(), self.model())
axis = ("column", "row")[self.orientation()!=Qt.Horizontal]
cnt = getattr(self.model(), axis+"Count")(QModelIndex())
if cnt:
self.initializeSections(0, cnt-1)
MultiIndexHeaderView=HierarchicalHeaderView
class DataFrameModel(QtCore.QAbstractTableModel):
#na_values:least|greatest - for sorting
options = {"striped": True, "stripesColor": "#fafafa", "na_values": "least",
"tooltip_min_len": 21}
def __init__(self, dataframe=None):
super().__init__()
self.setDataFrame(dataframe if dataframe is not None else pd.DataFrame())
def setDataFrame(self, dataframe):
self.df = dataframe.copy()
# self.df_full = self.df
self.layoutChanged.emit()
def rowCount(self, parent):
return len(self.df)
def columnCount(self, parent):
return len(self.df.columns)
def readLevel(self, y=0, xs=0, xe=None, orient=None):
c = getattr(self.df, ("columns", "index")[orient!=HorizontalHeaderDataRole])
if not hasattr(c, "levels"): #not MultiIndex
return [QtGui.QStandardItem(str(i)) for i in c]
sibl = []
section_start, v, xe = xs, None, xe or len(c)
for i in range(xs, xe):
label = c.labels[y][i]
if label!=v:
if y+1<len(c.levels) and i>xs:
children = self.readLevel(y+1, section_start, i, orient=orient)
sibl[-1].appendRow(children)
item = QtGui.QStandardItem(str(c.levels[y][label]))
sibl.append(item)
section_start = i
v=label
if y+1<len(c.levels):
children = self.readLevel(y+1, section_start, orient=orient)
sibl[-1].appendRow(children)
return sibl
def data(self, index, role):
row, col = index.row(), index.column()
if role in (Qt.DisplayRole, Qt.ToolTipRole):
ret = self.df.iat[row, col]
if ret is not None and ret==ret: #convert to str except for None, NaN, NaT
if isinstance(ret, float):
ret = "{:n}".format(ret)
elif isinstance(ret, datetime.date):
#FIXME: show microseconds optionally
ret = ret.strftime(("%x", "%c")[isinstance(ret, datetime.datetime)])
else: ret = str(ret)
if role == Qt.ToolTipRole:
if len(ret)<self.options["tooltip_min_len"]: ret = ""
return ret
elif role == Qt.BackgroundRole:
if self.options["striped"] and row%2:
return QBrush(QColor(self.options["stripesColor"]))
elif role in (HorizontalHeaderDataRole, VerticalHeaderDataRole):
hm = QtGui.QStandardItemModel()
hm.appendRow(self.readLevel(orient=role))
return hm
def reorder(self, oldIndex, newIndex, orientation):
"Reorder columns / rows"
horizontal = orientation==Qt.Horizontal
cols = list(self.df.columns if horizontal else self.df.index)
cols.insert(newIndex, cols.pop(oldIndex))
self.df = self.df[cols] if horizontal else self.df.T[cols].T
return True
# def filter(self, filt=None):
# self.df = self.df_full if filt is None else self.df[filt]
# self.layoutChanged.emit()
def headerData(self, section, orientation, role):
if role != Qt.DisplayRole: return
label = getattr(self.df, ("columns", "index")[orientation!=Qt.Horizontal])[section]
# return label if type(label) is tuple else label
return ("\n", " | ")[orientation!=Qt.Horizontal].join(str(i) for i in label) if type(label) is tuple else str(label)
def dataFrame(self):
return self.df
def sort(self, column, order):
# print("sort", column, order) #FIXME: double sort after setSortingEnabled(True)
if len(self.df):
asc = order==Qt.AscendingOrder
na_pos = 'first' if (self.options["na_values"]=="least")==asc else 'last'
self.df.sort_values(self.df.columns[column], ascending=asc,
inplace=True, na_position=na_pos)
self.layoutChanged.emit()
if __name__=="__main__":
import sys, locale
locale.setlocale(locale.LC_ALL, '') #system locale settings
app = QtGui.QApplication(sys.argv)
form = QtGui.QWidget()
form.setAttribute(Qt.WA_DeleteOnClose) #http://stackoverflow.com/a/27178019/1119602
form.setMinimumSize(700, 260)
view = QtGui.QTableView()
QtGui.QVBoxLayout(form).addWidget(view)
form.show()
#Prepare data
tuples=[('bar', 'one', 'q'), ('bar', 'two', 'q'), ('baz', 'one', 'q'), ('baz', 'two', 'q'),
('foo', 'one', 'q'), ('foo', 'two', 'q'), ('qux', 'one', 'q'), ('qux', 'two', 'q')]
index = pd.MultiIndex.from_tuples(tuples, names=['first', 'second', 'third'])
df=pd.DataFrame(pd.np.random.randn(6, 6), index=index[:6], columns=index[:6])
print("DataFrame:\n%s"%df)
#Prepare view
# oldh, oldv = view.horizontalHeader(), view.verticalHeader()
# oldh.setParent(form), oldv.setParent(form) #Save old headers for some reason
MultiIndexHeaderView(Qt.Horizontal, view)
MultiIndexHeaderView(Qt.Vertical, view)
view.horizontalHeader().setMovable(True) #reorder DataFrame columns manually
#Set data
view.setModel(DataFrameModel(df))
view.resizeColumnsToContents()
view.resizeRowsToContents()
#Set sorting enabled (after setting model)
view.setSortingEnabled(True)
sys.exit(app.exec())
def parentIndexes(self, index: QModelIndex) -> QModelIndexList:
indexes = QModelIndexList()
while index.isValid():
indexes.push_front(index)
index = index.parent()
return indexes
def findRootIndex(self, index: QModelIndex) -> QModelIndex:
while index.parent().isValid():
index = index.parent()
return index
