這是該方法的一個(gè)非?；镜膶?shí)現(xiàn)。
這個(gè)概念是為標(biāo)題提供正確的 sizeHint（標(biāo)題的默認(rèn)提示加上行編輯的高度）并用于setViewportMargins確保標(biāo)題具有文本字段使用的底部邊距。
class Header(QtWidgets.QHeaderView):
filterChanged = QtCore.pyqtSignal(int, str)
fieldsVisible = True
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.fields = []
self.sectionCountChanged.connect(self.generateFields)
self.sectionResized.connect(self.updateFields)
self.parent().horizontalScrollBar().valueChanged.connect(self.updateFields)
self.parent().verticalScrollBar().valueChanged.connect(self.updateFields)
def setFieldsVisible(self, visible):
if visible == self.fieldsVisible:
return
self.fieldsVisible = visible
self.generateFields()
def generateFields(self):
while self.fields:
self.fields.pop().deleteLater()
if self.fieldsVisible:
for s in range(self.count()):
edit = QtWidgets.QLineEdit(self)
edit.show()
self.fields.append(edit)
edit.textChanged.connect(lambda text, s=s: self.filterChanged.emit(s, text))
self.updateFields()
self.updateGeometries()
def updateFields(self):
offset = self.offset()
y = QtWidgets.QHeaderView.sizeHint(self).height()
for section, field in enumerate(self.fields):
field.move(self.sectionPosition(section) - offset, y)
field.resize(self.sectionSize(section), field.sizeHint().height())
def updateGeometries(self):
if self.fields:
self.setViewportMargins(0, 0, 0, self.fields[0].sizeHint().height())
else:
self.setViewportMargins(0, 0, 0, 0)
super().updateGeometries()
# ensure that the parent view updates correctly
self.parent().updateGeometries()
self.updateFields()
def sizeHint(self):
hint = super().sizeHint()
if self.fields:
hint.setHeight(hint.height() + self.fields[0].sizeHint().height())
return hint
class SearchTable(QtWidgets.QTableView):
def __init__(self):
super().__init__()
model = QtGui.QStandardItemModel()
for row in range(8):
model.appendRow([QtGui.QStandardItem('Item {} {}'.format(row, i)) for i in range(8)])
self.setModel(model)
self.setHorizontalHeader(Header(QtCore.Qt.Horizontal, self))
請(qǐng)注意，此示例未考慮移動(dòng)部分的可能性，如果您想實(shí)現(xiàn)多列過濾器，您將需要 QSortFilterProxyModel 的子類（例如，此處提供的那個(gè)）。我提供了一個(gè)基本信號(hào) ( filterChanged)，它將返回該部分和已更改的文本。
