【分享】PyQt QTableView实现QCheckBox,实现更新数据刷新

源码可以从这个地方下载:

https://gist.github.com/345161974/dd5003ed9b706adc557ee12e6a344c6e

首先看下演示效果:

开发环境:PyQt 4.8.7, Python 3.4.3, win10 64bit

实现这部分源码,花费了我一点时间学习Qt的M/V编程模型.根据M/V编程模型,我以Python语言在PyQt上实现出来我需要的各种功能,希望可以给大家参考.

知识点如下:

1. PyQt QTableView嵌入QCheckBox;
2. PyQt更新Model刷新界面;
3. PyQt M/V 编程模型.

代码里实现了一个定时器进行Model数据的刷新,然后还有checkbox的实现.

各种实现细节,参考源码,有问题留言,ths.

源码如下:

''' pqt_tableview3.py
explore PyQT's QTableView Model
using QAbstractTableModel to present tabular data
allow table sorting by clicking on the header title

used the Anaconda package (comes with PyQt4) on OS X
(dns)
'''

#coding=utf-8

import operator  # used for sorting
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from PyQt4 import QtGui, QtCore
from time import time
import threading

class MyWindow(QWidget):
    def __init__(self, dataList, header, *args):
        QWidget.__init__(self, *args)
        # setGeometry(x_pos, y_pos, width, height)
        self.setGeometry(70, 150, 1326, 582)
        self.setWindowTitle("Click on the header to sort table")

        self.table_model = MyTableModel(self, dataList, header)
        self.table_view = QTableView()
        #self.table_view.setSelectionMode(QAbstractItemView.SingleSelection)
        self.table_view.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
        self.table_view.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
        # bind cell click to a method reference
        self.table_view.clicked.connect(self.showSelection)
        self.table_view.clicked.connect(self.selectRow)

        self.table_view.setModel(self.table_model)
        # enable sorting
        self.table_view.setSortingEnabled(True)

        layout = QVBoxLayout(self)
        layout.addWidget(self.table_view)
        self.setLayout(layout)

    def update_model(self, datalist, header):
        self.table_model2 = MyTableModel(self, dataList, header)
        self.table_view.setModel(self.table_model2)
        self.table_view.update()

    def showSelection(self, item):
        cellContent = item.data()
        # print(cellContent)  # test
        sf = "You clicked on {}".format(cellContent)
        # display in title bar for convenience
        self.setWindowTitle(sf)

    def selectRow(self, index):
        # print("current row is %d", index.row())
        pass


class MyTableModel(QAbstractTableModel):
    """
    keep the method names
    they are an integral part of the model
    """
    def __init__(self, parent, mylist, header, *args):
        QAbstractTableModel.__init__(self, parent, *args)
        self.mylist = mylist
        self.header = header
        self.timer = QtCore.QTimer()
        self.change_flag = True
        self.timer.timeout.connect(self.updateModel)
        self.timer.start(1000)
        
        # self.rowCheckStateMap = {}

    def setDataList(self, mylist):
        self.mylist = mylist
        self.layoutAboutToBeChanged.emit()
        self.dataChanged.emit(self.createIndex(0, 0), self.createIndex(self.rowCount(0), self.columnCount(0)))
        self.layoutChanged.emit()

    def updateModel(self):
        dataList2 = []
        if self.change_flag is True:
            dataList2 = [
                [QtGui.QCheckBox("关"), 0, '063802', '01', 'rb1705,rb1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
                [QtGui.QCheckBox("关"), 0, '063802', '02', 'cu1705,cu1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
                [QtGui.QCheckBox("关"), 0, '063802', '03', 'zn1705,zn1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
                [QtGui.QCheckBox("关"), 0, '063802', '04', 'rb1705,rb1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
                [QtGui.QCheckBox("关"), 0, '063802', '01', 'zn1705,zn1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
                [QtGui.QCheckBox("关"), 0, '063802', '02', 'ru1705,ru1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
                [QtGui.QCheckBox("关"), 0, '063802', '02', 'ni1705,ni1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
                [QtGui.QCheckBox("关"), 0, '063802', '01', 'rb1705,rb1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
            ]
            self.change_flag = False
        elif self.change_flag is False:
            dataList2 = [
                [QtGui.QCheckBox("关"), 0, '058176', '01', 'rb1705,rb1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
                [QtGui.QCheckBox("关"), 0, '058176', '02', 'cu1705,cu1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
                [QtGui.QCheckBox("关"), 0, '058176', '03', 'zn1705,zn1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
                [QtGui.QCheckBox("关"), 0, '058176', '04', 'rb1705,rb1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
                [QtGui.QCheckBox("关"), 0, '058176', '01', 'zn1705,zn1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
                [QtGui.QCheckBox("关"), 0, '058176', '02', 'ru1705,ru1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
                [QtGui.QCheckBox("关"), 0, '058176', '02', 'ni1705,ni1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
                [QtGui.QCheckBox("关"), 0, '058176', '01', 'rb1705,rb1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
            ]
            self.change_flag = True

        self.mylist = dataList2
        self.layoutAboutToBeChanged.emit()
        self.dataChanged.emit(self.createIndex(0, 0), self.createIndex(self.rowCount(0), self.columnCount(0)))
        self.layoutChanged.emit()

    def rowCount(self, parent):
        return len(self.mylist)

    def columnCount(self, parent):
        return len(self.mylist[0])

    def data(self, index, role):
        if not index.isValid():
            return None
        if (index.column() == 0):
            value = self.mylist[index.row()][index.column()].text()
        else:
            value = self.mylist[index.row()][index.column()]
        if role == QtCore.Qt.EditRole:
            return value
        elif role == QtCore.Qt.DisplayRole:
            return value
        elif role == QtCore.Qt.CheckStateRole:
            if index.column() == 0:
                # print(">>> data() row,col = %d, %d" % (index.row(), index.column()))
                if self.mylist[index.row()][index.column()].isChecked():
                    return QtCore.Qt.Checked
                else:
                    return QtCore.Qt.Unchecked

    def headerData(self, col, orientation, role):
        if orientation == Qt.Horizontal and role == Qt.DisplayRole:
            return self.header[col]
        return None

    def sort(self, col, order):
        """sort table by given column number col"""
        # print(">>> sort() col = ", col)
        if col != 0:
            self.emit(SIGNAL("layoutAboutToBeChanged()"))
            self.mylist = sorted(self.mylist, key=operator.itemgetter(col))
            if order == Qt.DescendingOrder:
                self.mylist.reverse()
            self.emit(SIGNAL("layoutChanged()"))

    def flags(self, index):
        if not index.isValid():
            return None
        # print(">>> flags() index.column() = ", index.column())
        if index.column() == 0:
            # return Qt::ItemIsEnabled | Qt::ItemIsSelectable | Qt::ItemIsUserCheckable
            return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable | QtCore.Qt.ItemIsUserCheckable
        else:
            return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable

    def setData(self, index, value, role):
        if not index.isValid():
            return False
        # print(">>> setData() role = ", role)
        # print(">>> setData() index.column() = ", index.column())
        # print(">>> setData() value = ", value)
        if role == QtCore.Qt.CheckStateRole and index.column() == 0:
            print(">>> setData() role = ", role)
            print(">>> setData() index.column() = ", index.column())
            if value == QtCore.Qt.Checked:
                self.mylist[index.row()][index.column()].setChecked(True)
                self.mylist[index.row()][index.column()].setText("开")
                # if studentInfos.size() > index.row():
                #     emit StudentInfoIsChecked(studentInfos[index.row()])     
            else:
                self.mylist[index.row()][index.column()].setChecked(False)
                self.mylist[index.row()][index.column()].setText("关")
        else:
            print(">>> setData() role = ", role)
            print(">>> setData() index.column() = ", index.column())
        # self.emit(SIGNAL("dataChanged(QModelIndex,QModelIndex)"), index, index)
        print(">>> setData() index.row = ", index.row())
        print(">>> setData() index.column = ", index.column())
        self.dataChanged.emit(index, index)
        return True

def timer_func(win, mylist):
    print(">>> timer_func()")
    win.table_model.setDataList(mylist)
    win.table_view.repaint()
    win.table_view.update()

# def timer_func(num):
#     print(">>> timer_func() num = ", num)


if __name__ == '__main__':
    app = QApplication([])
    # you could process a CSV file to create this data
    header = ['开关', '只平', '期货账号', '策略编号', '交易合约', '总持仓', '买持仓', '卖持仓', '持仓盈亏', '平仓盈亏', '手续费', '净盈亏', '成交量', '成交金额', 'A成交率', 'B成交率', '交易模型', '下单算法']
    # a list of (fname, lname, age, weight) tuples
    checkbox1 = QtGui.QCheckBox("关");
    checkbox1.setChecked(True)
    dataList = [
        [checkbox1, 0, '058176', '01', 'rb1705,rb1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
        [QtGui.QCheckBox("关"), 0, '058176', '02', 'cu1705,cu1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
        [QtGui.QCheckBox("关"), 0, '058176', '03', 'zn1705,zn1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
        [QtGui.QCheckBox("关"), 0, '058176', '04', 'rb1705,rb1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
        [QtGui.QCheckBox("关"), 0, '058176', '01', 'zn1705,zn1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
        [QtGui.QCheckBox("关"), 0, '058176', '02', 'ru1705,ru1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
        [QtGui.QCheckBox("关"), 0, '058176', '02', 'ni1705,ni1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
        [QtGui.QCheckBox("关"), 0, '058176', '01', 'rb1705,rb1710', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'MA', '01'],
    ]

    win = MyWindow(dataList, header)
    win.show()
    # win.table_model.setDataList(dataList)
    # timer = threading.Timer(10, timer_func, (win, dataList2))
    # timer.start()
    app.exec_()

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