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ParentNodeForbid.py
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ParentNodeForbid.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Created on 2019年11月8日
@author: Irony
@site: https://pyqt5.com https://github.com/892768447
@email: 892768447@qq.com
@file: QTreeWidget.ParentNodeForbid
@description: 父节点不可选中
"""
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import QTreeWidget, QTreeWidgetItem, QStyledItemDelegate,\
QStyle
__Author__ = 'Irony'
__Copyright__ = 'Copyright (c) 2019'
__Version__ = 1.0
class NoColorItemDelegate(QStyledItemDelegate):
def paint(self, painter, option, index):
if option.state & QStyle.State_HasFocus:
# 取消虚线框
option.state = option.state & ~ QStyle.State_HasFocus
if option.state & QStyle.State_MouseOver and index.data(Qt.UserRole + 1):
# 不显示鼠标悬停颜色
option.state = option.state & ~ QStyle.State_MouseOver
super(NoColorItemDelegate, self).paint(painter, option, index)
class Window(QTreeWidget):
def __init__(self, *args, **kwargs):
super(Window, self).__init__(*args, **kwargs)
self.setItemDelegateForColumn(0, NoColorItemDelegate(self))
# 父节点(不可选中)
pitem1 = QTreeWidgetItem(self, ['parent item 1'])
# 设置不可选中
pitem1.setFlags(pitem1.flags() & ~Qt.ItemIsSelectable)
# 设置一个标识用于屏蔽鼠标事件
pitem1.setData(0, Qt.UserRole + 1, True)
pitem2 = QTreeWidgetItem(self, ['parent item 2'])
pitem2.setFlags(pitem2.flags() & ~Qt.ItemIsSelectable)
pitem2.setData(0, Qt.UserRole + 1, True)
# 子节点(可选)
citem1 = QTreeWidgetItem(pitem1, ['child item 1'])
citem2 = QTreeWidgetItem(pitem2, ['child item 2'])
self.expandAll()
# 信号槽
self.itemActivated.connect(self.onItemActivated)
self.itemClicked.connect(self.onItemClicked)
self.itemDoubleClicked.connect(self.onItemDoubleClicked)
self.itemPressed.connect(self.onItemPressed)
def mousePressEvent(self, event):
# 鼠标点击事件,判断当前点击位置是否有item且满足标志则拦截鼠标事件
item = self.itemAt(event.pos())
if item and item.data(0, Qt.UserRole + 1):
event.accept()
return
super(Window, self).mousePressEvent(event)
def onItemActivated(self, item, column):
print('Activated', item.text(0), item, column)
def onItemClicked(self, item, column):
print('Clicked', item.text(0), item, column)
def onItemDoubleClicked(self, item, column):
print('DoubleClicked', item.text(0), item, column)
def onItemPressed(self, item, column):
print('Pressed', item.text(0), item, column)
if __name__ == '__main__':
import sys
import cgitb
cgitb.enable(1, None, 5, '')
from PyQt5.QtWidgets import QApplication
app = QApplication(sys.argv)
w = Window()
w.show()
sys.exit(app.exec_())