PYQT 可视化

PYQT 实例

import json
import sys
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5 import QtCore
from PyQt5.QtWidgets import *

data = [{'id':'1','pairs':'EOS','price':'18'},{'id':'2','pairs':'BTC','price':'1'},{'id':'3','pairs':'USDT','price':'333'},{'id':'4','pairs':'BSV','price':'555'},{'id':'5','pairs':'BSV','price':'555'}]
HEAD_LIST = ['id','交易队', '价格', '修改','删除','添加']
COLUMN = len(HEAD_LIST)
ROW = len(data)

# 控制表格某列不能修改
class EmptyDelegate(QItemDelegate):
    def __init__(self, parent):
        super(EmptyDelegate, self).__init__(parent)

    def createEditor(self, QWidget, QStyleOptionViewItem, QModelIndex):
        return None

class TabWidget(QTabWidget,QWidget):
    def __init__(self, parent=None):
        super(TabWidget, self).__init__(parent)
        self.setWindowTitle("合约交易")
        self.resize(900,800)

        # 创建用于显示控件的窗口
        self.tab1 = QWidget()
        self.tab2 = QWidget()
        self.addTab(self.tab1,'选项卡1')
        self.addTab(self.tab2,'选项卡2')
        self.tableWidget = QTableWidget()

        self.tab1UI().init_event()
        self.tab2UI(data,self.tableWidget)

######### 页面一的所有内容 #################
    def tab1UI(self):
        layout = QFormLayout()

        # 浮点校验器 [-360,360]，精度：小数点后2位
        doubleValidator = QDoubleValidator(self)
        doubleValidator.setRange(-360, 360)
        doubleValidator.setNotation(QDoubleValidator.StandardNotation)
        # 设置精度，小数点2位
        doubleValidator.setDecimals(2)

        # 大写字母和下划线
        reg = QRegExp('[A-Za-z0-9-_]+$')
        validator = QRegExpValidator(self)
        validator.setRegExp(reg)

        self.button = QPushButton('确定')
        self.name_label = QLabel(self.tr("委托类型"))
        self.delegate_combobox = QComboBox()
        self.delegate_combobox.addItem(self.tr('限价委托'))
        self.delegate_combobox.addItem(self.tr('跟踪委托'))
        self.delegate_combobox.addItem(self.tr('计划委托'))
        layout.addRow("委托类型", self.delegate_combobox)

        self.pair_name_edit = QLineEdit()
        layout.addRow('交易对', self.pair_name_edit)
        self.pair_name_edit.setPlaceholderText('字母数字下划线：ETC_USDT')
        self.pair_name_edit.setValidator(validator)


        self.price_edit = QLineEdit()
        layout.addRow('价格',self.price_edit)
        self.price_edit.setPlaceholderText('请输入浮点数')
        self.price_edit.setValidator(doubleValidator)
        self.quantity_edit = QLineEdit()
        layout.addRow('数量',self.quantity_edit)
        self.quantity_edit.setPlaceholderText('请输入浮点数')
        self.quantity_edit.setValidator(doubleValidator)

        self.other1_edit = QLineEdit()
        layout.addRow('其他1', self.other1_edit)
        self.other1_edit.setPlaceholderText('其他')

        self.other2_edit = QLineEdit()
        layout.addRow('其他2', self.other2_edit)
        self.other2_edit.setPlaceholderText('其他')

        self.setTabText(0,'调整参数')
        self.tab1.setLayout(layout)
        layout.addWidget(self.button)
        return self

    def init_event(self):
        self.button.clicked.connect(self.get_info)

    def get_info(self):
        delegate_type = self.delegate_combobox.currentText()
        pair_name = self.pair_name_edit.text()
        price = self.price_edit.text()
        number = self.quantity_edit.text()
        other1 = self.other1_edit.text()
        other2 = self.other2_edit.text()
        if not all([delegate_type, pair_name, price,number,other1,other2]):
            QMessageBox.about(self, '错误', '所有参数不能为空！！')
            return

        choice = QMessageBox.question(self, '', '确定参数正确？', QMessageBox.Yes | QMessageBox.No, QMessageBox.Yes)
        if choice == 16384 :
            self.pair_name_edit.clear()
            self.price_edit.clear()
            self.quantity_edit.clear()
            self.other1_edit.clear()
            self.other2_edit.clear()
            adjust_coefficient_dict = {"委托类型": delegate_type, '交易对': pair_name, '价格': price, '数量': number,
                                       '其他1': other1, '其他2': other2}
            # with open('coefficient.txt','at',encoding='utf-8') as f:
            #     f.write(json.dumps(adjust_coefficient_dict,ensure_ascii=False)+'
')
            print(adjust_coefficient_dict)

######### 页面二的所有内容###################
    def tab2UI(self,data,tableWidget):
        # 当前页
        self.currentPage = 0
        # 总页数
        self.totalPage = 0
        # 总记录数
        self.totalRecrodCount = 0
        # 每页显示记录数
        self.PageRecordCount = 2

        # 创建窗口
        self.createWindow(tableWidget)
        # 表格数据渲染, 要根据页数进行取读数据
        self.setTableData(tableWidget,data)

        # 信号槽连接
        self.prevButton.clicked.connect(self.onPrevButtonClick)
        self.nextButton.clicked.connect(self.onNextButtonClick)
        self.switchPageButton.clicked.connect(self.onSwitchPageButtonClick)

    def createWindow(self,tableWidget):
        # 操作布局
        operatorLayout = QHBoxLayout()
        self.prevButton = QPushButton("前一页")
        self.nextButton = QPushButton("后一页")
        self.switchPageButton = QPushButton("Go")
        self.switchPageLineEdit = QLineEdit()
        self.switchPageLineEdit.setFixedWidth(40)

        switchPage = QLabel("转到第")
        page = QLabel("页")
        operatorLayout.addWidget(self.prevButton)
        operatorLayout.addWidget(self.nextButton)
        operatorLayout.addWidget(switchPage)
        operatorLayout.addWidget(self.switchPageLineEdit)
        operatorLayout.addWidget(page)
        operatorLayout.addWidget(self.switchPageButton)
        operatorLayout.addWidget(QSplitter())

        # 状态布局
        statusLayout = QHBoxLayout()
        self.totalPageLabel = QLabel()
        self.totalPageLabel.setFixedWidth(70)
        self.currentPageLabel = QLabel()
        self.currentPageLabel.setFixedWidth(70)

        self.totalRecordLabel = QLabel()
        self.totalRecordLabel.setFixedWidth(70)

        statusLayout.addWidget(self.totalPageLabel)
        statusLayout.addWidget(self.currentPageLabel)
        statusLayout.addWidget(QSplitter())
        statusLayout.addWidget(self.totalRecordLabel)

        self.setTabText(1, '信息展示')
        # 设置表的行，列，及表头
        tableWidget.setRowCount(ROW)
        tableWidget.setColumnCount(COLUMN)
        tableWidget.setHorizontalHeaderLabels(HEAD_LIST)
        tableWidget.horizontalHeader().setSectionResizeMode(QHeaderView.Interactive)

        # 创建界面
        layout = QVBoxLayout()
        layout.addLayout(operatorLayout)
        layout.addWidget(tableWidget)
        layout.addLayout(statusLayout)
        self.tab2.setLayout(layout)

    def setTableData(self,tableWidget,data):
        '''取读数据进行页面渲染'''

        for i in range(len(data)):
            idItem = QTableWidgetItem(data[i]['id'])
            tableWidget.setItem(i, 0, idItem)
            textItem = QTableWidgetItem(data[i]['pairs'])
            tableWidget.setItem(i, 1, textItem)
            priceItem = QTableWidgetItem(data[i]['price'])
            tableWidget.setItem(i, 2, priceItem)

            modifyButton = QPushButton('修改')
            modifyButton.clicked.connect(self.modify_data)
            tableWidget.setCellWidget(i, 3, modifyButton)

            delbutton = QPushButton('删除')
            delbutton.clicked.connect(self.delete_data)
            tableWidget.setCellWidget(i, 4, delbutton)

            addbutton = QPushButton('添加')
            addbutton.clicked.connect(self.add_data)
            tableWidget.setCellWidget(i, 5, addbutton)
        # 控制id列不能修改
        tableWidget.setItemDelegateForColumn(0, EmptyDelegate(self))

    # 添加按钮 的点击事件
    @QtCore.pyqtSlot()
    def add_data(self):
        # 点击弹出输入对话框
        id, id_ok = QInputDialog.getInt(self, 'id整数且不可重复', 'id')
        pairs, pairs_ok = QInputDialog.getText(self, '交易队名称大写', '交易队')
        price, price_ok = QInputDialog.getDouble(self, '价格浮点数', '价格',decimals=2)

        # 判断输入内容是否合法，不能为空，id不能重复等等。。。
        if not all([id, id_ok, pairs,pairs_ok,price,price_ok]):
            return

        # 产生新的行
        rowPosition = self.tableWidget.rowCount()  # 行号
        self.tableWidget.insertRow(rowPosition)

        self.tableWidget.setItem(rowPosition, 0, QTableWidgetItem(str(id)))
        self.tableWidget.setItem(rowPosition, 1, QTableWidgetItem(pairs))
        self.tableWidget.setItem(rowPosition, 2, QTableWidgetItem(str(price)))
        modifyButton = QPushButton('修改')
        modifyButton.clicked.connect(self.modify_data)
        self.tableWidget.setCellWidget(rowPosition, 3, modifyButton)

        delbutton = QPushButton('删除')
        delbutton.clicked.connect(self.delete_data)
        self.tableWidget.setCellWidget(rowPosition, 4, delbutton)

        addbutton = QPushButton('添加')
        addbutton.clicked.connect(self.add_data)
        self.tableWidget.setCellWidget(rowPosition, 5, addbutton)
        # 此时获得了新的数据， id, pairs, price , 更新到data文件中
        add_dic = {'id': id, 'pairs': pairs, 'price': price}
        print('新增了数据: %s'%add_dic)

    # 修改按钮的点击事件
    @QtCore.pyqtSlot()
    def modify_data(self):
        button = self.sender()
        key_list = ['id','pairs', 'price']
        new_dic = {}
        if button:
            row = self.tableWidget.indexAt(button.pos()).row()
            id = self.tableWidget.item(row, 0).text()
            # 通过for 循环取出该行的所有数据，修改data
            for column in range(len(key_list)):
                content = self.tableWidget.item(row, column).text()
                new_dic[key_list[column]] = content
            print('需要修改id为%s行,新的内容为%s'%(id,new_dic))
            # 接下来根据id修改data...

    # 删除按钮的点击事件
    @QtCore.pyqtSlot()
    def delete_data(self):
        button = self.sender()
        if button:
            row = self.tableWidget.indexAt(button.pos()).row()
            # 这里一定要放在删除上面，否则取出的id 出错
            id = self.tableWidget.item(row, 0).text()
            self.tableWidget.removeRow(row)
            print('删除了id为%s的行'%id)
            # 接下来删除data 中对应id的那条数据。。。

    def onPrevButtonClick(self):
        '''前一页按钮点击事件 '''
        pass

    def onNextButtonClick(self):
        '''后一页按钮点击事件'''
        pass
    def onSwitchPageButtonClick(self):
        '''go 按钮点击事件'''
        pass

if __name__ == '__main__':
    app = QApplication(sys.argv)
    demo = TabWidget()
    demo.show()
    sys.exit(app.exec_())