[Pyqt]一、MVC之tableView

tableView

如果用到表格的话，我们就要用到tableView

1.使用QtDesign绘制出tableView_1，就可以显示行和列，后将其转化为py文件：

 

2.转化为py文件后，我们更改上文提到的model，

将listModel更改为tableModel，将ListView更改为tableView_1

self.table_model = demo_model.TableModel(self.tableView_1)

我们生成一个Model，把它放在View的当作它的子物体，self.tableView_1其实是一个子物体，是一个高级化的列表

tableView与listView不同的是，它不仅需要行也需要列

Design.py

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'mvs_tabwidget.ui'
#
# Created by: PyQt5 UI code generator 5.13.0
#
# WARNING! All changes made in this file will be lost!


from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(433, 322)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.layoutWidget = QtWidgets.QWidget(self.centralwidget)
        self.layoutWidget.setGeometry(QtCore.QRect(10, 10, 391, 218))
        self.layoutWidget.setObjectName("layoutWidget")
        self.horizontalLayout = QtWidgets.QHBoxLayout(self.layoutWidget)
        self.horizontalLayout.setContentsMargins(0, 0, 0, 0)
        self.horizontalLayout.setObjectName("horizontalLayout")
        self.verticalLayout = QtWidgets.QVBoxLayout()
        self.verticalLayout.setObjectName("verticalLayout")
        self.label = QtWidgets.QLabel(self.layoutWidget)
        self.label.setObjectName("label")
        self.verticalLayout.addWidget(self.label)
        self.tableView = QtWidgets.QTableView(self.layoutWidget)
        self.tableView.setObjectName("tableView")
        self.verticalLayout.addWidget(self.tableView)
        self.horizontalLayout.addLayout(self.verticalLayout)
        self.verticalLayout_2 = QtWidgets.QVBoxLayout()
        self.verticalLayout_2.setObjectName("verticalLayout_2")
        self.label_2 = QtWidgets.QLabel(self.layoutWidget)
        self.label_2.setObjectName("label_2")
        self.verticalLayout_2.addWidget(self.label_2)
        self.tableView_2 = QtWidgets.QTableView(self.layoutWidget)
        self.tableView_2.setObjectName("tableView_2")
        self.verticalLayout_2.addWidget(self.tableView_2)
        self.horizontalLayout.addLayout(self.verticalLayout_2)
        self.widget = QtWidgets.QWidget(self.centralwidget)
        self.widget.setGeometry(QtCore.QRect(80, 240, 195, 30))
        self.widget.setObjectName("widget")
        self.horizontalLayout_2 = QtWidgets.QHBoxLayout(self.widget)
        self.horizontalLayout_2.setContentsMargins(0, 0, 0, 0)
        self.horizontalLayout_2.setObjectName("horizontalLayout_2")
        self.pushButton = QtWidgets.QPushButton(self.widget)
        self.pushButton.setObjectName("pushButton")
        self.horizontalLayout_2.addWidget(self.pushButton)
        self.pushButton_2 = QtWidgets.QPushButton(self.widget)
        self.pushButton_2.setObjectName("pushButton_2")
        self.horizontalLayout_2.addWidget(self.pushButton_2)
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 433, 26))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.label.setText(_translate("MainWindow", "TextLabel"))
        self.label_2.setText(_translate("MainWindow", "TextLabel"))
        self.pushButton.setText(_translate("MainWindow", "PushButton"))
        self.pushButton_2.setText(_translate("MainWindow", "remove"))

view.py

# coding=utf-8
import sys
from PyQt5 import QtCore, QtGui, QtWidgets
from b.MVC.mvs_tabwidget import Ui_MainWindow
from b.MVC.mvc_tablemodel_core import TableMode


class DemonWindow(Ui_MainWindow, QtWidgets.QMainWindow):
    """
    创建list model
    """

    def __init__(self, parent=None):
        super(Ui_MainWindow, self).__init__(parent)
        self.setupUi(self)

        self.table_model = TableMode(self.tableView)
        self.tableView.setModel(self.table_model)
        self.tableView_2.setModel(self.table_model)

    @QtCore.pyqtSlot()
    def on_pushButton_clicked(self):
        """
        # 点击按钮添加元素
        :return:
        """
        self.table_model.insertRow(self.table_model.rowCount(), ['S', 'S', 'S', 'S'])

    @QtCore.pyqtSlot()
    def on_pushButton_2_clicked(self):
        """
        # 点击按钮删除元素
        :return:
        """
        # self.table_model.clear() #清空整个表格
        # self.table_model.removeRow(self.table_model.rowCount() - 1) #删除最后一行
        # 删除选定行
        print("pushbutton")
        select_indexs = self.tableView.selectedIndexes()
        rows = [index.row() for index in select_indexs]
        rows = dict.fromkeys(rows).keys()

        for r in sorted(rows, reverse=True):
            self.table_model.removeRow(r)


if __name__ == '__main__':
    app = QtWidgets.QApplication(sys.argv)  # sys.argv是一组命令行参数的列表，该程序会被cou进行轮询
    ex = DemonWindow()
    ex.show()
    app.exec_()

Model.py

# coding=utf-8
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import *


class TableMode(QtCore.QAbstractTableModel):
    """
    创建list model
    """
    HEAD_DATA = ('Name', 'Age', 'work', 'Sex', 'company')

    def __init__(self, parent=None):
        super(TableMode, self).__init__(parent)
        self.table_data = [["A", 'B', 'C', 'D'],
                           ["A1", 'B1', 'C1', 'D1'],
                           ["A2", 'B2', 'C2', 'D2'],
                           ["A3", 'B3', 'C3', 'D3']]

    def columnCount(self, parent=QtCore.QModelIndex()):
        """

        :param parent:
        :return:
        """
        return 4

    def rowCount(self, parent=QtCore.QModelIndex()):
        """
        :param self:
        :param parent:
        :param args:
        :param kwargs:
        :return:
        """
        return len(self.table_data)

    def headerData(self, sec, orientation=QtCore.Qt.Horizontal, role=QtCore.Qt.DisplayRole):
        """

        :param sec:
        :param orientation:
        :param role:
        :return:
        """
        if orientation == QtCore.Qt.Horizontal and role == QtCore.Qt.DisplayRole:
            return self.HEAD_DATA[sec]

        if orientation == QtCore.Qt.Vertical and role == QtCore.Qt.DisplayRole:
            return sec + 1

    def data(self, index = QtCore.QModelIndex(), role=QtCore.Qt.DisplayRole):
        """

        :param QModelIndex:
        :param role:
        :return:
        """
        if role == QtCore.Qt.DisplayRole or role == QtCore.Qt.EditRole:
            return self.table_data[index.row()][index.column()]

        # 设置前景色
        if role == QtCore.Qt.ForegroundRole:
            return QtGui.QColor(255, 0, 0)

        # 设置背景色
        if role == QtCore.Qt.BackgroundColorRole:
            return QtGui.QColor(0, 255, 0)

        # if role == QtCore.Qt.DecorationRole:
        #     return QtGui.QPixmap("D:/school/TdClass/Prictice/1.jpg")

    def flags(self, index=QtCore.QModelIndex()):
        """

        :param index:
        :return:
        """
        return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable | QtCore.Qt.ItemIsEditable

    def setData(self, index = QtCore.QModelIndex(), value=None, role=QtCore.Qt.EditRole):
        """

        :param QModelIndex:
        :param value:
        :param role:
        :return:
        """
        if value != None:
            self.table_data[index.row()][index.column()] = value
            self.dataChanged.emit(index, index)
            return True

    def insertRow(self, row, value=None, idnex=QtCore.QModelIndex()):
        """

        :param row:
        :param value: [v1, v2, v3, v4]
        :param idnex:
        :return:
        """
        if value != None:
            self.beginInsertRows(idnex, row, row)
            self.table_data.insert(row, value)
            self.endInsertRows()

    def removeRow(self, row, idnex=QtCore.QModelIndex()):
        """

        :param row:
        :param value: [v1, v2, v3, v4]
        :param idnex:
        :return:
        """
        self.beginRemoveRows(idnex, row, row)
        self.table_data.pop(row)
        self.endRemoveRows()

    def clear(self):
        """

        :return:
        """
        for i in reversed(range(self.rowCount())):
            self.removeRow(i)

columnCount rowCount为定义列数和行数，其中行数一般为固定数字，为避免刷新慢，

self.table_data需要一个二维的列表

data函数中需要得到单元格的索引，来访问列表里的数据

增加数据：

需要使用insertRow

在insertRow中，需要先定义开始插入，结束之后要定义endIsertRows

删除一行：

需要使用removeRow