149 lines
4.8 KiB
Python
149 lines
4.8 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Created on 2018年12月27日
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@author: Irony
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@site: https://pyqt5.com https://github.com/892768447
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@email: 892768447@qq.com
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@file: QListView.SortItemByRole
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@description:
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"""
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from random import choice
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from PyQt5.QtCore import QSortFilterProxyModel, Qt
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from PyQt5.QtGui import QStandardItem, QStandardItemModel
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from PyQt5.QtWidgets import QWidget, QVBoxLayout, QListView, QPushButton
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__Author__ = """By: Irony
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QQ: 892768447
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Email: 892768447@qq.com"""
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__Copyright__ = "Copyright (c) 2018 Irony"
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__Version__ = "Version 1.0"
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class SortFilterProxyModel(QSortFilterProxyModel):
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def __init__(self, *args, **kwargs):
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super(SortFilterProxyModel, self).__init__(*args, **kwargs)
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self._topIndex = 0
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def setSortIndex(self, index):
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self._topIndex = index
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print('在最前面的序号为:', index)
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def lessThan(self, source_left, source_right):
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if not source_left.isValid() or not source_right.isValid():
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return False
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if self.sortRole() == ClassifyRole and \
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source_left.column() == self.sortColumn() and \
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source_right.column() == self.sortColumn():
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# 获取左右两个的分类
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leftIndex = source_left.data(ClassifyRole)
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rightIndex = source_right.data(ClassifyRole)
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# 升序
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if self.sortOrder() == Qt.AscendingOrder:
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# 保持在最前面
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if leftIndex == self._topIndex:
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leftIndex = -1
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if rightIndex == self._topIndex:
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rightIndex = -1
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return leftIndex < rightIndex
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return super(SortFilterProxyModel, self).lessThan(source_left, source_right)
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NameDict = {
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'唐': ['Tang', 0],
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'宋': ['Song', 1],
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'元': ['Yuan', 2],
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'明': ['Ming', 3],
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'清': ['Qing', 4],
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}
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IndexDict = {
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0: '唐',
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1: '宋',
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2: '元',
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3: '明',
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4: '清',
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}
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IdRole = Qt.UserRole + 1 # 用于恢复排序
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ClassifyRole = Qt.UserRole + 2 # 用于按照分类序号排序
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class Window(QWidget):
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def __init__(self, *args, **kwargs):
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super(Window, self).__init__(*args, **kwargs)
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self.resize(600, 400)
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layout = QVBoxLayout(self)
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self.listView = QListView(self)
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self.listView.setEditTriggers(QListView.NoEditTriggers)
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layout.addWidget(self.listView)
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layout.addWidget(QPushButton('恢复默认顺序', self, clicked=self.restoreSort))
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layout.addWidget(QPushButton('唐', self, clicked=self.sortByClassify))
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layout.addWidget(QPushButton('宋', self, clicked=self.sortByClassify))
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layout.addWidget(QPushButton('元', self, clicked=self.sortByClassify))
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layout.addWidget(QPushButton('明', self, clicked=self.sortByClassify))
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layout.addWidget(QPushButton('清', self, clicked=self.sortByClassify))
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self._initItems()
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def restoreSort(self):
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# 恢复默认排序
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self.fmodel.setSortRole(IdRole) # 必须设置排序角色为ID
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self.fmodel.sort(0) # 排序第一列按照ID升序
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def sortByClassify(self):
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self.fmodel.setSortIndex(NameDict.get(
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self.sender().text(), ['', 100])[1])
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# self.restoreSort()
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self.fmodel.setSortRole(IdRole)
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# 按照给定的分类排序（这里注意还要按照把给定分类的放在最前面）
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self.fmodel.setSortRole(ClassifyRole)
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self.fmodel.sort(0)
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def _initItems(self):
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# 初始化Items
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self.dmodel = QStandardItemModel(self.listView)
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self.fmodel = SortFilterProxyModel(self.listView)
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self.fmodel.setSourceModel(self.dmodel)
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self.listView.setModel(self.fmodel)
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keys = list(NameDict.keys())
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print(keys) # ['清', '元', '唐', '明', '宋']
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classifies = [v[1] for v in NameDict.values()]
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for i in range(5):
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# 添加5个100, 用于模拟没有分类, 排序的时候就显示在最后面
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classifies.append(100)
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print(classifies) # [4, 2, 0, 3, 1, 100, 100, 100, 100, 100]
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# 生成50个Item
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for i in range(50):
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# name = keys[i % 4] # 随机取一个朝代
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item = QStandardItem()
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# 设置ID角色
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item.setData(i, IdRole)
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# 设置分类角色
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c = choice(classifies)
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item.setData(c, ClassifyRole)
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# 设置显示内容
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item.setText('Name: {}\t\tId: {}\t\tClassify: {}'.format(
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IndexDict.get(c, '其它'), i, c))
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self.dmodel.appendRow(item)
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if __name__ == '__main__':
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import sys
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import cgitb
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sys.excepthook = cgitb.enable(1, None, 5, '')
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from PyQt5.QtWidgets import QApplication
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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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