我想首先有一個在 QHeaderView 下面沒有過濾器的普通視圖和一個用于激活（顯示）過濾器的按鈕：單擊“過濾器”按鈕（具有屬性“button.setCheckable(True)”）后，我想得到：注意：過濾器按鈕被按下?，F(xiàn)在，當(dāng)我再次單擊“過濾器”按鈕（取消按下它）時，我希望 QHeaderView 下面帶有過濾器的行消失：我該怎么做，換句話說，如何讓 QTableView 的 QHeaderView 成為舊的普通視圖？在應(yīng)用程序中擁有這種功能將非常方便，用戶可以隨時使用按鈕（或任何其他方式）切換 QHeaderView 下面的過濾器行。應(yīng)用程序的行為是在未按下按鈕并且過濾器行消失時取消視圖中的所有過濾器，但這對于這個問題并不重要。
1 回答
絕地?zé)o雙
TA貢獻(xiàn)1946條經(jīng)驗(yàn) 獲得超4個贊
您必須創(chuàng)建一個處理編輯器可見性的屬性：
class FilterHeader(QHeaderView):
filterActivated = pyqtSignal()
def __init__(self, parent):
super().__init__(Qt.Horizontal, parent)
self._visible_editors = False
self._editors = []
self._padding = 4
self.setStretchLastSection(True)
# self.setResizeMode(QHeaderView.Stretch)
self.setDefaultAlignment(Qt.AlignLeft | Qt.AlignVCenter)
self.setSortIndicatorShown(False)
self.sectionResized.connect(self.adjustPositions)
parent.horizontalScrollBar().valueChanged.connect(self.adjustPositions)
@property
def visible_editors(self):
return self._visible_editors
@visible_editors.setter
def visible_editors(self, is_visible):
self._visible_editors = is_visible
for editor in self._editors:
editor.setVisible(self.visible_editors)
self.updateGeometries()
def setFilterBoxes(self, count):
while self._editors:
editor = self._editors.pop()
editor.deleteLater()
for index in range(count):
editor = self.create_editor(self.parent(), index)
editor.setVisible(self.visible_editors)
self._editors.append(editor)
self.adjustPositions()
def create_editor(self, parent, index):
if index == 1: # Empty
editor = QWidget()
elif index == 2: # Number filter (>|=|<)
editor = Widget(parent)
editor.linee.returnPressed.connect(self.filterActivated)
editor.btn.clicked.connect(self.changebuttonsymbol)
elif index == 3:
editor = QComboBox(parent)
editor.addItems(["", "Combo", "One", "Two", "Three"])
editor.currentIndexChanged.connect(self.filterActivated)
elif index == 4:
editor = QPushButton(parent)
editor.clicked.connect(self.filterActivated)
editor.setText("Button")
elif index == 5:
editor = QCheckBox(parent)
editor.clicked.connect(self.filterActivated)
editor.setTristate(True)
editor.setCheckState(Qt.Checked)
editor.setText("CheckBox")
else:
editor = QLineEdit(parent)
editor.setPlaceholderText("Filter")
editor.returnPressed.connect(self.filterActivated)
return editor
def sizeHint(self):
size = super().sizeHint()
if self._editors and self.visible_editors:
height = self._editors[0].sizeHint().height()
size.setHeight(size.height() + height + self._padding)
return size
def updateGeometries(self):
if self._editors and self.visible_editors:
height = self._editors[0].sizeHint().height()
self.setViewportMargins(0, 0, 0, height + self._padding)
else:
self.setViewportMargins(0, 0, 0, 0)
super().updateGeometries()
self.adjustPositions()
def adjustPositions(self):
for index, editor in enumerate(self._editors):
if not isinstance(editor, QWidget):
continue
height = editor.sizeHint().height()
compensate_y = 0
compensate_x = 0
if type(editor) is QComboBox:
compensate_y = +2
elif type(editor) in (QWidget, Widget):
compensate_y = -1
elif type(editor) is QPushButton:
compensate_y = -1
elif type(editor) is QCheckBox:
compensate_y = 4
compensate_x = 4
editor.move(
self.sectionPosition(index) - self.offset() + 1 + compensate_x,
height + (self._padding // 2) + 2 + compensate_y,
)
editor.resize(self.sectionSize(index), height)
def filterText(self, index):
for editor in self._editors:
if hasattr(editor, "text") and callable(editor.text):
return editor.text()
return ""
def setFilterText(self, index, text):
for editor in self._editors:
if hasattr(editor, "setText") and callable(editor.setText):
editor.setText(text)
def clearFilters(self):
for editor in self._editors:
editor.clear()
def changebuttonsymbol(self):
nbtn = self.sender()
if nbtn.text() == "=":
nbtn.setText(">")
elif nbtn.text() == ">":
nbtn.setText("<")
else:
nbtn.setText("=")
class Window(QWidget):
def __init__(self):
super(Window, self).__init__()
self.filter_button = QPushButton("Filter")
self.filter_button.setCheckable(True)
self.filter_button.setChecked(True)
self.filter_button.clicked.connect(self.on_button_clicked)
self.view = QTableView()
self.view.horizontalHeader().setStretchLastSection(True)
button_layout = QHBoxLayout()
button_layout.addStretch()
button_layout.addWidget(self.filter_button)
layout = QVBoxLayout(self)
layout.addLayout(button_layout)
layout.addWidget(self.view)
header = FilterHeader(self.view)
self.view.setHorizontalHeader(header)
self.view.verticalHeader().setVisible(False)
# model = QStandardItemModel(self.view)
model = QStandardItemModel(5, 7, self.view)
for i in range(5):
for j in range(7):
item = QStandardItem(str(i + j))
model.setItem(i, j, item)
model.setHorizontalHeaderLabels("One Two Three Four Five Six Seven".split())
self.view.setModel(model)
header.setFilterBoxes(model.columnCount())
header.filterActivated.connect(self.handleFilterActivated)
self.on_button_clicked()
def handleFilterActivated(self):
header = self.view.horizontalHeader()
for index in range(header.count()):
if index != 4:
print(index, header.filterText(index))
else:
print("Button")
def on_button_clicked(self):
self.view.horizontalHeader().visible_editors = self.filter_button.isChecked()
添加回答
舉報
0/150
提交
取消