我正在使用PyQt5,并希望通过单击来标记该行,即使其以不同的颜色显示,例如红色的。再次单击同一行后,应再次取消标记。
我尝试了不同的方法(如何在我的代码中看到标记为注释的方法,但是没有找到解决方案。
class TableViewModel(QtCore.QAbstractTableModel):
def __init__(self, records, parent=None):
super().__init__(parent)
self.datatable = records
self.color_enabled = False
self.color_back = QtCore.Qt.magenta
self.data_changed = pyqtSignal(QtCore.QModelIndex,QtCore.QModelIndex)
def rowCount(self, parent=QtCore.QModelIndex):
return len(self.datatable)
def columnCount(self, parent=QtCore.QModelIndex):
return len(self.datatable[0]) if self.datatable else 0
def data(self, index, role, **kwargs): #role=QtCore.Qt.DisplayRole?
#reason = kwargs.get('r', None)
if index.isValid() and role == QtCore.Qt.DisplayRole:
return str(self.datatable[index.row()][index.column()])
if index.isValid() and role == QtCore.Qt.BackgroundRole and self.color_enabled:
return gui.QBrush(gui.QColor(255, 0, 43)) #red
def row_clicked(self, index, role = QtCore.Qt.BackgroundRole):
# numeric position of dataset
if index is not None:
row = index.row()
column = index.column()
if column == 0:
self.itemnumber = index.sibling(row, column)
self.itemname = index.sibling(row, column + 1)
self.itemsize = index.sibling(row, column + 2)
elif column == 1:
self.itemnumber = index.sibling(row, column - 1)
self.itemname = index.sibling(row, column)
self.itemsize = index.sibling(row, column + 1)
elif column == 2:
self.itemnumber = index.sibling(row, column - 2)
self.itemname = index.sibling(row, column - 1)
self.itemsize = index.sibling(row, column)
return (self.itemnumber, self.itemname, self.itemsize, index) #return objects!!! no real datas
#print("Ausgewählter Artikel: ",self.itemindex.data(), self.itemname.data(), self.itemsize.data())
def flags(self, index):
return QtCore.Qt.ItemIsEnabled
def headerData(self, section, orientation, role):
if role == QtCore.Qt.DisplayRole and orientation == QtCore.Qt.Horizontal:
return header_table_view[section]
return QtCore.QAbstractTableModel.headerData(self, section, orientation, role)
def setData(self, index, value, role=QtCore.Qt.DisplayRole):
if role == QtCore.Qt.DisplayRole:
row = index.row()
column = index.column()
color = gui.QColor(value)
#data = value
#self.datatable[row][column] = data
#self.dataChanged.emit(index, index)
return True
def changedData(self):
self.data_changed.emit(pyqtSignal("DataChanged(QModelIndex,QModelIndex)"), self.createIndex(0, 0), self.createIndex(self.rowCount(0)), self.columnCount(0))
def sort(self, column, order):
#self.emit(pyqtSignal("layoutAboutToBeChanged()"))
#self.layoutAboutToBeChanged.emit()
self.sortCol = column
self.sortOrder = order
try:
self.datatable = sorted(self.datatable, key = operator.itemgetter(column))
self.data_changed.emit(pyqtSignal("layoutChanged()"))
except:
print("keine Sortierung möglich")
#self.datatable.sort(key=itemgetter(column), reverse=order == QtCore.Qt.DescendingOrder)
def insertRow(self, item, index=QtCore.QModelIndex()):
""" Insert a row into the model. """
#self.beginInsertRows(QtCore.QModelIndex(), position, position + rows - 1)
TableViewModel.layoutAboutToBeChanged()
self.append(item)
TableViewModel.layoutChanged()
reply = QtWidgets.QMessageBox.information(self, "Meldung zum Artikelliste", "Artikel erfolgreich hinzugefügt!")
return True
因为您没有提供MRE,所以我将提供一个从头开始创建的示例。我还假设当您说一行时,您的意思是行。
该策略是使用一种角色来存储行的状态(布尔值),然后在按下该行时更改该值。根据该状态,将使用自定义委托来更改将用于绘制项目的backgroundBrush。
import random
from PyQt5 import QtCore, QtGui, QtWidgets
StateRole = QtCore.Qt.UserRole + 1000
class BackgroundColorDelegate(QtWidgets.QStyledItemDelegate):
def initStyleOption(self, option, index):
super().initStyleOption(option, index)
print(index.data(StateRole))
if index.data(StateRole):
option.backgroundBrush = QtGui.QColor("red")
class MainWindow(QtWidgets.QMainWindow):
def __init__(self, parent=None):
super().__init__(parent)
self.model = QtGui.QStandardItemModel()
for i in range(5):
for j in range(4):
value = random.randint(0, 10)
it = QtGui.QStandardItem()
it.setData(value, QtCore.Qt.DisplayRole)
self.model.setItem(i, j, it)
self.tableview = QtWidgets.QTableView()
self.tableview.setModel(self.model)
self.tableview.clicked.connect(self.on_clicked)
delegate = BackgroundColorDelegate(self.tableview)
self.tableview.setItemDelegate(delegate)
self.setCentralWidget(self.tableview)
@QtCore.pyqtSlot(QtCore.QModelIndex)
def on_clicked(self, index):
state = False
for i in range(self.model.columnCount()):
ix = self.model.index(index.row(), i)
value = ix.data(StateRole)
if value is not None:
state = value
break
for i in range(self.model.columnCount()):
ix = self.model.index(index.row(), i)
self.model.setData(ix, not state, StateRole)
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
w = MainWindow()
w.show()
sys.exit(app.exec_())