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)+'\n')
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_())
