满足条件时更改PyQt5 QTableWidget行样式表

问题描述

在下面的图片中，我有一个QTableWidget来查看一对多关系sqlite数据库中的数据，我设法使用setpan功能并通过@eyllanesc对此answer的帮助来合并输出的某些列以正确显示数据。

我现在要实现的是使用背景色（交替颜色）给每个订单上色，以提高可读性，尝试了table.setAlternatingRowColors（True），但是当订单包含多个项目时，它会失败！有条件的行样式该如何完成？

import sys
from PyQt5 import QtWidgets
from PyQt5.QtWidgets import *

query_result = [(683,18,765,1.73,'1 ring ruby ring',685.71,'vincent percy','john joseph croft'),(684,14,900,4.48,'1 earring ear drop',534.86,'Ben otten','Anne Cooksley Beltrame'),2.1,'1 ring cluster ring',1.3,'1 ring eternity band',(685,200,3.26,'1 ring promise ring','raymond bob','owen george taylor'),(686,24,450,10.0,'1 bullion Gold bar',914.28,(687,345,4.75,'1 earring Dangles Earring','dan justin balmers'),(688,810,3.1,'1 earring fish hookEarring',677.14,'jeff david steve'),21,2.6,'1 ring ANTIQUE RING',790,'jeff david steve')]


class Window(QWidget):
    def __init__(self):
        super().__init__()
        self.setwindowTitle("mini_ui")
        self.setGeometry(300,150,800,600)
        self.Ui()

    def Ui(self):
        vBox = QVBoxLayout()
        btn_show_table = QPushButton("view sample data")
        btn_show_table.clicked.connect(self.today_sales_table)
        self.viewTodayTable = QTableWidget()
        self.viewTodayTable.setSelectionBehavior(QtWidgets.QAbstractItemView.SelectRows)
        self.viewTodayTable.setobjectName("viewTodayTable")
        self.viewTodayTable.setColumnCount(8)
        self.viewTodayTable.setRowCount(0)
        self.viewTodayTable.setHorizontalHeaderItem(0,QtWidgets.QTableWidgetItem("Order ID"))
        self.viewTodayTable.setHorizontalHeaderItem(1,QtWidgets.QTableWidgetItem("Karat"))
        self.viewTodayTable.setHorizontalHeaderItem(2,QtWidgets.QTableWidgetItem("Price"))
        self.viewTodayTable.setHorizontalHeaderItem(3,QtWidgets.QTableWidgetItem("Weight"))
        self.viewTodayTable.setHorizontalHeaderItem(4,QtWidgets.QTableWidgetItem("Description"))
        self.viewTodayTable.setHorizontalHeaderItem(5,QtWidgets.QTableWidgetItem("Gram price"))
        self.viewTodayTable.setHorizontalHeaderItem(6,QtWidgets.QTableWidgetItem("Employee"))
        self.viewTodayTable.setHorizontalHeaderItem(7,QtWidgets.QTableWidgetItem("Client"))
        self.viewTodayTable.horizontalHeader().setDefaultSectionSize(130)
        self.viewTodayTable.horizontalHeader().setSortIndicatorShown(True)
        self.viewTodayTable.horizontalHeader().setStretchLastSection(True)
        vBox.addWidget(btn_show_table)
        vBox.addWidget(self.viewTodayTable)
        self.setLayout(vBox)
        self.show()

    def apply_span_to_sales_table(self,row,nrow):
        if nrow <= 1:
            return
        for c in (0,2,6,7):
            self.viewTodayTable.setSpan(row,c,nrow,1)
            for r in range(row + 1,row + nrow):
                t = self.viewTodayTable.takeItem(r,c)
                del t

    def today_sales_table(self):
        today_result = query_result
        self.viewTodayTable.setRowCount(0)

        last_id = -1
        start_row = 0
        for row_number,row_data in enumerate(today_result):
            self.viewTodayTable.insertRow(row_number)
            current_id,*other_values = row_data
            for column_number,data in enumerate(row_data):
                it = QtWidgets.QTableWidgetItem(str(data))
                self.viewTodayTable.setItem(row_number,column_number,it)
            if last_id != current_id and last_id != -1:
                self.apply_span_to_sales_table(start_row,row_number - start_row)
                start_row = row_number
            last_id = current_id
            if start_row != row_number:
                self.apply_span_to_sales_table(start_row,self.viewTodayTable.rowCount() - start_row)


def main():
    App = QApplication(sys.argv)
    window = Window()
    sys.exit(App.exec())


if __name__ == '__main__':
    main()

解决方法

经过一番搜索，设法解决了该问题：

• 如果订单号是奇数，则用color1为行着色，如果偶数为2，则着色

这是工作代码

import sys
from PyQt5 import QtWidgets,QtGui,Qt
from PyQt5.QtGui import QColor
from PyQt5.QtWidgets import *


prev_day = "2020-10-15"
query_result = [(683,18,765,1.73,'1 ring ruby ring',685.71,'vincent percy','john joseph croft'),(684,14,900,4.48,'1 earring ear drop',534.86,'Ben Otten','Anne Cooksley Beltrame'),2.1,'1 ring cluster ring',1.3,'1 ring eternity band',(685,200,3.26,'1 ring promise ring','raymond bob','owen george taylor'),(686,24,450,10.0,'1 bullion Gold bar',914.28,(687,345,4.75,'1 earring Dangles Earring','dan justin balmers'),(688,810,3.1,'1 earring fish hookEarring',677.14,'jeff david steve'),21,2.6,'1 ring ANTIQUE RING',790,'jeff david steve')]


class Window(QWidget):
    def __init__(self):
        super().__init__()
        self.setWindowTitle("mini_ui")
        self.setGeometry(300,150,800,600)
        self.Ui()

    def Ui(self):
        vbox = QVBoxLayout()
        btn_show_table = QPushButton("view sample data")
        btn_show_table.clicked.connect(self.today_sales_table)
        self.viewTodayTable = QTableWidget()
        self.viewTodayTable.setSelectionBehavior(QtWidgets.QAbstractItemView.SelectRows)
        self.viewTodayTable.setObjectName("viewTodayTable")
        self.viewTodayTable.setColumnCount(8)
        self.viewTodayTable.setRowCount(0)
        self.viewTodayTable.setHorizontalHeaderItem(0,QtWidgets.QTableWidgetItem("Order ID"))
        self.viewTodayTable.setHorizontalHeaderItem(1,QtWidgets.QTableWidgetItem("Karat"))
        self.viewTodayTable.setHorizontalHeaderItem(2,QtWidgets.QTableWidgetItem("Price"))
        self.viewTodayTable.setHorizontalHeaderItem(3,QtWidgets.QTableWidgetItem("Weight"))
        self.viewTodayTable.setHorizontalHeaderItem(4,QtWidgets.QTableWidgetItem("Description"))
        self.viewTodayTable.setHorizontalHeaderItem(5,QtWidgets.QTableWidgetItem("Gram price"))
        self.viewTodayTable.setHorizontalHeaderItem(6,QtWidgets.QTableWidgetItem("Employee"))
        self.viewTodayTable.setHorizontalHeaderItem(7,QtWidgets.QTableWidgetItem("Client"))
        self.viewTodayTable.horizontalHeader().setDefaultSectionSize(130)
        self.viewTodayTable.horizontalHeader().setSortIndicatorShown(True)
        self.viewTodayTable.horizontalHeader().setStretchLastSection(True)

        vbox.addWidget(btn_show_table)
        vbox.addWidget(self.viewTodayTable)
        self.setLayout(vbox)

        self.show()

    def apply_span_to_sales_table(self,row,nrow):
        if nrow <= 1:
            return
        for c in (0,2,6,7):
            self.viewTodayTable.setSpan(row,c,nrow,1)
            for r in range(row + 1,row + nrow):
                t = self.viewTodayTable.takeItem(r,c)
                del t

    def today_sales_table(self):
        today_result = query_result
        self.viewTodayTable.setRowCount(0)

        last_id = -1
        start_row = 0
        for row_number,row_data in enumerate(today_result):
            self.viewTodayTable.insertRow(row_number)
            current_id,*other_values = row_data

            for column_number,data in enumerate(row_data):
                it = QtWidgets.QTableWidgetItem(str(data))

                self.viewTodayTable.setItem(row_number,column_number,it)

                if current_id % 2 == 1:
                    self.viewTodayTable.item(row_number,column_number).setBackground(QColor(185,206,172))
                    print("whats up")
                elif current_id % 2 == 0:
                    self.viewTodayTable.item(row_number,column_number).setBackground(QColor(193,171,206))
                    print("whats up 2")

                if last_id != current_id and last_id != -1:
                    self.apply_span_to_sales_table(start_row,row_number - start_row)
                    start_row = row_number

                last_id = current_id
                if start_row != row_number:
                    self.apply_span_to_sales_table(start_row,self.viewTodayTable.rowCount() - start_row)


def main():
    App = QApplication(sys.argv)
    window = Window()
    sys.exit(App.exec())


if __name__ == '__main__':
    main()