94 lines
3 KiB
Python
94 lines
3 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Created on 2019年11月8日
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@author: Irony
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@site: https://pyqt.site , https://github.com/PyQt5
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@email: 892768447@qq.com
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@file: QTreeWidget.ParentNodeForbid
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@description: 父节点不可选中
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"""
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try:
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from PyQt5.QtCore import Qt
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from PyQt5.QtWidgets import QApplication, QTreeWidget, QTreeWidgetItem, QStyledItemDelegate, \
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QStyle
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except ImportError:
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from PySide2.QtCore import Qt
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from PySide2.QtWidgets import QApplication, QTreeWidget, QTreeWidgetItem, QStyledItemDelegate, \
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QStyle
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class NoColorItemDelegate(QStyledItemDelegate):
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def paint(self, painter, option, index):
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if option.state & QStyle.State_HasFocus:
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# 取消虚线框
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option.state = option.state & ~ QStyle.State_HasFocus
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if option.state & QStyle.State_MouseOver and index.data(Qt.UserRole + 1):
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# 不显示鼠标悬停颜色
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option.state = option.state & ~ QStyle.State_MouseOver
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super(NoColorItemDelegate, self).paint(painter, option, index)
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class Window(QTreeWidget):
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def __init__(self, *args, **kwargs):
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super(Window, self).__init__(*args, **kwargs)
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self.setItemDelegateForColumn(0, NoColorItemDelegate(self))
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# 父节点（不可选中）
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pitem1 = QTreeWidgetItem(self, ['parent item 1'])
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# 设置不可选中
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pitem1.setFlags(pitem1.flags() & ~Qt.ItemIsSelectable)
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# 设置一个标识用于屏蔽鼠标事件
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pitem1.setData(0, Qt.UserRole + 1, True)
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pitem2 = QTreeWidgetItem(self, ['parent item 2'])
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pitem2.setFlags(pitem2.flags() & ~Qt.ItemIsSelectable)
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pitem2.setData(0, Qt.UserRole + 1, True)
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# 子节点（可选）
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citem1 = QTreeWidgetItem(pitem1, ['child item 1'])
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citem2 = QTreeWidgetItem(pitem2, ['child item 2'])
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self.expandAll()
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# 信号槽
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self.itemActivated.connect(self.onItemActivated)
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self.itemClicked.connect(self.onItemClicked)
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self.itemDoubleClicked.connect(self.onItemDoubleClicked)
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self.itemPressed.connect(self.onItemPressed)
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def mousePressEvent(self, event):
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# 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
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item = self.itemAt(event.pos())
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if item and item.data(0, Qt.UserRole + 1):
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event.accept()
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return
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super(Window, self).mousePressEvent(event)
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def onItemActivated(self, item, column):
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print('Activated', item.text(0), item, column)
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def onItemClicked(self, item, column):
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print('Clicked', item.text(0), item, column)
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def onItemDoubleClicked(self, item, column):
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print('DoubleClicked', item.text(0), item, column)
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def onItemPressed(self, item, column):
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print('Pressed', item.text(0), item, column)
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if __name__ == '__main__':
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import sys
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import cgitb
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cgitb.enable(format='text')
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app = QApplication(sys.argv)
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w = Window()
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w.show()
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sys.exit(app.exec_())
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