Python 如何使qtablewidget中过滤器中使用的菜单栏在pyqt5中可滚动?
我对pyqt很陌生,这个问题可能很傻。如果有任何帮助,我将不胜感激。我有这个代码,我从这个页面得到,它在过滤qtablewidget中编码。这段代码非常适合我想要的过滤输出。然而,我有一个表,它有很多行,我想在过滤中使用的菜单栏是滚动的,而不是显示所有唯一的内容在这一行。我想要一个固定大小的菜单栏 代码如下:Python 如何使qtablewidget中过滤器中使用的菜单栏在pyqt5中可滚动?,python,filter,pyqt5,qtablewidget,qmenubar,Python,Filter,Pyqt5,Qtablewidget,Qmenubar,我对pyqt很陌生,这个问题可能很傻。如果有任何帮助,我将不胜感激。我有这个代码,我从这个页面得到,它在过滤qtablewidget中编码。这段代码非常适合我想要的过滤输出。然而,我有一个表,它有很多行,我想在过滤中使用的菜单栏是滚动的,而不是显示所有唯一的内容在这一行。我想要一个固定大小的菜单栏 代码如下: import csv import sys from PyQt5 import QtCore from PyQt5 import QtGui, QtWidgets class Wid
import csv
import sys
from PyQt5 import QtCore
from PyQt5 import QtGui, QtWidgets
class Widget(QtWidgets.QWidget):
def __init__(self, parent=None):
super(Widget, self).__init__(parent=parent)
self.verticalLayout = QtWidgets.QVBoxLayout(self)
self.table = QtWidgets.QTableWidget(self)
self.table.setColumnCount(0)
self.table.setRowCount(0)
self.verticalLayout.addWidget(self.table)
self.loadAll()
self.horizontalHeader = self.table.horizontalHeader()
self.horizontalHeader.sectionClicked.connect(self.on_view_horizontalHeader_sectionClicked)
self.keywords = dict([(i, []) for i in range(self.table.columnCount())])
self.checkBoxs = []
self.col = None
def slotSelect(self, state):
for checkbox in self.checkBoxs:
checkbox.setChecked(QtCore.Qt.Checked == state)
def on_view_horizontalHeader_sectionClicked(self, index):
self.menu = QtWidgets.QMenu()
self.col = index
data_unique = []
self.checkBoxs = []
checkBox = QtWidgets.QCheckBox("Select all", self.menu)
checkableAction = QtWidgets.QWidgetAction(self.menu)
checkableAction.setDefaultWidget(checkBox)
self.menu.addAction(checkableAction)
checkBox.setChecked(True)
checkBox.stateChanged.connect(self.slotSelect)
for i in range(self.table.rowCount()):
if not self.table.isRowHidden(i):
item = self.table.item(i, index)
if item.text() not in data_unique:
data_unique.append(item.text())
checkBox = QtWidgets.QCheckBox(item.text(), self.menu)
checkBox.setChecked(True)
checkableAction = QtWidgets.QWidgetAction(self.menu)
checkableAction.setDefaultWidget(checkBox)
self.menu.addAction(checkableAction)
self.checkBoxs.append(checkBox)
btn = QtWidgets.QDialogButtonBox(QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Cancel,
QtCore.Qt.Horizontal, self.menu)
btn.accepted.connect(self.menuClose)
btn.rejected.connect(self.menu.close)
checkableAction = QtWidgets.QWidgetAction(self.menu)
checkableAction.setDefaultWidget(btn)
self.menu.addAction(checkableAction)
headerPos = self.table.mapToGlobal(self.horizontalHeader.pos())
posY = headerPos.y() + self.horizontalHeader.height()
posX = headerPos.x() + self.horizontalHeader.sectionPosition(index)
self.menu.exec_(QtCore.QPoint(posX, posY))
def menuClose(self):
self.keywords[self.col] = []
for element in self.checkBoxs:
if element.isChecked():
self.keywords[self.col].append(element.text())
self.filterdata()
self.menu.close()
def loadAll(self):
with open("pokemon_data.csv", "r") as inpfil:
reader = csv.reader(inpfil, delimiter=',')
csheader = next(reader)
ncol = len(csheader)
data = list(reader)
row_count = len(data)
self.table.setRowCount(row_count)
self.table.setColumnCount(ncol)
self.table.setHorizontalHeaderLabels(('%s' % ', '.join(map(str, csheader))).split(","))
for ii in range(0, row_count):
mainins = data[ii]
for var in range(0, ncol):
self.table.setItem(ii, var, QtWidgets.QTableWidgetItem(mainins[var]))
def clearFilter(self):
for i in range(self.table.rowCount()):
self.table.setRowHidden(i, False)
def filterdata(self):
columnsShow = dict([(i, True) for i in range(self.table.rowCount())])
for i in range(self.table.rowCount()):
for j in range(self.table.columnCount()):
item = self.table.item(i, j)
if self.keywords[j]:
if item.text() not in self.keywords[j]:
columnsShow[i] = False
for key, value in columnsShow.items():
self.table.setRowHidden(key, not value)
if __name__ == '__main__':
app = QtWidgets.QApplication(sys.argv)
w = Widget()
w.show()
sys.exit(app.exec_())
这就是它目前的样子:
当我试图通过单击标题进行筛选时,所有桌面窗口都被填满,因为我的表中有太多行,如下图所示
我只需要一个更大的菜单栏
我尝试搜索与此相关的查询,但我找不到可以将其集成到此代码中。请对你的回答温和一点,因为我对这件事真的很陌生。非常感谢你 最简单的解决方案是使用未记录的样式表属性(如的未接受答案中所建议的) 或者(如果出于任何原因,该行为不能按预期工作,或者其支持在将来被删除),您可以创建一个子类,实现它并返回
True
,如果给定的提示是SH\u Menu\u Scrollable
class ProxyStyle(QtWidgets.QProxyStyle):
def styleHint(self, hint, option, widget, data):
if hint == self.SH_Menu_Scrollable:
return True
return super().styleHint(hint, option, widget, data)
# ...
if __name__ == '__main__':
app = QtWidgets.QApplication(sys.argv)
app.setStyle(ProxyStyle())
w = Widget()
w.show()
sys.exit(app.exec_())
如果希望仅为该菜单保留该行为,则可以将代理样式应用于该菜单,而不是对整个应用程序应用代理样式:
def on_view_horizontalHeader_sectionClicked(self, index):
self.menu = QtWidgets.QMenu()
self.menu.setStyle(ProxyStyle())
# ...
顺便说一下,您使用的是菜单,而不是菜单栏。菜单栏是通常放在窗口顶部的小部件,包含不同的项目,每个项目(可能)都是一个菜单
更新
由于项目很多,出于各种原因,使用QMenu不是一个好的解决方案。
更好的方法是使用包含QListWidget和按钮框的QWidget。要保持菜单的行为类似于菜单的行为(如果在其外部发生单击,则应将其关闭),可以添加弹出窗口
窗口标志
class Widget(QtWidgets.QWidget):
def __init__(self, parent=None):
# ...
self.dialog = QtWidgets.QWidget()
self.dialog.setWindowFlags(
self.dialog.windowFlags() | QtCore.Qt.Popup | QtCore.Qt.FramelessWindowHint)
self.dialog.setMaximumHeight(300)
layout = QtWidgets.QVBoxLayout(self.dialog)
self.dialogList = QtWidgets.QListWidget()
layout.addWidget(self.dialogList)
self.dialogList.itemChanged.connect(self.slotSelect)
buttonBox = QtWidgets.QDialogButtonBox(
QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Cancel)
layout.addWidget(buttonBox)
buttonBox.accepted.connect(self.menuClose)
buttonBox.rejected.connect(self.dialog.hide)
def on_view_horizontalHeader_sectionClicked(self, index):
self.dialogList.clear()
self.selectAllItem = QtWidgets.QListWidgetItem('Select all')
self.selectAllItem.setCheckState(QtCore.Qt.Unchecked)
self.dialogList.addItem(self.selectAllItem)
self.col = index
self.itemList = []
data_unique = []
for i in range(self.table.rowCount()):
if not self.table.isRowHidden(i):
item = self.table.item(i, index)
if item == self.selectAllItem:
continue
if item.text() not in data_unique:
item = QtWidgets.QListWidgetItem(item.text())
item.setCheckState(QtCore.Qt.Unchecked)
self.dialogList.addItem(item)
self.itemList.append(item)
self.dialog.move(QtGui.QCursor.pos())
self.dialog.show()
def slotSelect(self, item):
# temporally disconnect the signal to avoid recursion
self.dialogList.itemChanged.disconnect(self.slotSelect)
if item == self.selectAllItem:
state = item.checkState()
for i in self.itemList:
i.setCheckState(state)
else:
states = [i.checkState() for i in self.itemList]
if all(states):
self.selectAllItem.setCheckState(QtCore.Qt.Checked)
elif not any(states):
self.selectAllItem.setCheckState(QtCore.Qt.Unchecked)
else:
self.selectAllItem.setCheckState(QtCore.Qt.PartiallyChecked)
# reconnect the signal back again
self.dialogList.itemChanged.connect(self.slotSelect)
def menuClose(self):
self.dialog.hide()
self.keywords[self.col] = []
for item in self.itemList:
if item.checkState():
self.keywords[self.col].append(item.text())
self.filterdata()
伟大的谢谢@musicamante!只是为了添加额外的查询(1)如何在菜单的左侧添加一个滚动条,就像在excel过滤器中一样?那么用户可以快速滚动?(2) 另外,如何将菜单的大小调整为仅300px?因为它仍然充满了我的桌面。非常感谢你!要设置最大高度,只需使用`self.menu.setMaximumHeight(300)。关于另一个问题,这相当复杂,可能很难正确回答。我建议您改用弹出式QListView。谢谢。实际上我只是从另一个页面复制代码,这就是为什么它是这样设置的。目前,我还没有真正了解QListView和QAction。你能编辑一下吗?我不知道这是不是太过分了。我很抱歉。。我这个月刚开始学习编程。所有这些东西都是新的。对不起,对不起,我重新仔细阅读了代码,现在我明白了。我已经更新了这个问题(尽管它没有真正反映标题中的问题)。无论如何,我建议你仔细研究文档,试着理解你正在使用的代码,因为不知道它的作用,简单的复制/粘贴是不明智的。你真是一个伟大的人!!谢谢你,亲爱的!谢谢你的帮助:)
class Widget(QtWidgets.QWidget):
def __init__(self, parent=None):
# ...
self.dialog = QtWidgets.QWidget()
self.dialog.setWindowFlags(
self.dialog.windowFlags() | QtCore.Qt.Popup | QtCore.Qt.FramelessWindowHint)
self.dialog.setMaximumHeight(300)
layout = QtWidgets.QVBoxLayout(self.dialog)
self.dialogList = QtWidgets.QListWidget()
layout.addWidget(self.dialogList)
self.dialogList.itemChanged.connect(self.slotSelect)
buttonBox = QtWidgets.QDialogButtonBox(
QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Cancel)
layout.addWidget(buttonBox)
buttonBox.accepted.connect(self.menuClose)
buttonBox.rejected.connect(self.dialog.hide)
def on_view_horizontalHeader_sectionClicked(self, index):
self.dialogList.clear()
self.selectAllItem = QtWidgets.QListWidgetItem('Select all')
self.selectAllItem.setCheckState(QtCore.Qt.Unchecked)
self.dialogList.addItem(self.selectAllItem)
self.col = index
self.itemList = []
data_unique = []
for i in range(self.table.rowCount()):
if not self.table.isRowHidden(i):
item = self.table.item(i, index)
if item == self.selectAllItem:
continue
if item.text() not in data_unique:
item = QtWidgets.QListWidgetItem(item.text())
item.setCheckState(QtCore.Qt.Unchecked)
self.dialogList.addItem(item)
self.itemList.append(item)
self.dialog.move(QtGui.QCursor.pos())
self.dialog.show()
def slotSelect(self, item):
# temporally disconnect the signal to avoid recursion
self.dialogList.itemChanged.disconnect(self.slotSelect)
if item == self.selectAllItem:
state = item.checkState()
for i in self.itemList:
i.setCheckState(state)
else:
states = [i.checkState() for i in self.itemList]
if all(states):
self.selectAllItem.setCheckState(QtCore.Qt.Checked)
elif not any(states):
self.selectAllItem.setCheckState(QtCore.Qt.Unchecked)
else:
self.selectAllItem.setCheckState(QtCore.Qt.PartiallyChecked)
# reconnect the signal back again
self.dialogList.itemChanged.connect(self.slotSelect)
def menuClose(self):
self.dialog.hide()
self.keywords[self.col] = []
for item in self.itemList:
if item.checkState():
self.keywords[self.col].append(item.text())
self.filterdata()