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# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
import sys
from PySide6.QtCore import Qt, Slot
from PySide6.QtGui import QPainter
from PySide6.QtWidgets import (QApplication, QFormLayout, QHeaderView,
QHBoxLayout, QLineEdit, QMainWindow,
QPushButton, QTableWidget, QTableWidgetItem,
QVBoxLayout, QWidget)
from PySide6.QtCharts import QChartView, QPieSeries, QChart
class Widget(QWidget):
def __init__(self):
super().__init__()
self.items = 0
# Example data
self._data = {"Water": 24.5, "Electricity": 55.1, "Rent": 850.0,
"Supermarket": 230.4, "Internet": 29.99, "Bars": 21.85,
"Public transportation": 60.0, "Coffee": 22.45, "Restaurants": 120}
# Left
self.table = QTableWidget()
self.table.setColumnCount(2)
self.table.setHorizontalHeaderLabels(["Description", "Price"])
self.table.horizontalHeader().setSectionResizeMode(QHeaderView.Stretch)
# Chart
self.chart_view = QChartView()
self.chart_view.setRenderHint(QPainter.Antialiasing)
# Right
self.description = QLineEdit()
self.description.setClearButtonEnabled(True)
self.price = QLineEdit()
self.price.setClearButtonEnabled(True)
self.add = QPushButton("Add")
self.clear = QPushButton("Clear")
self.plot = QPushButton("Plot")
# Disabling 'Add' button
self.add.setEnabled(False)
form_layout = QFormLayout()
form_layout.addRow("Description", self.description)
form_layout.addRow("Price", self.price)
self.right = QVBoxLayout()
self.right.addLayout(form_layout)
self.right.addWidget(self.add)
self.right.addWidget(self.plot)
self.right.addWidget(self.chart_view)
self.right.addWidget(self.clear)
# QWidget Layout
self.layout = QHBoxLayout(self)
self.layout.addWidget(self.table)
self.layout.addLayout(self.right)
# Signals and Slots
self.add.clicked.connect(self.add_element)
self.plot.clicked.connect(self.plot_data)
self.clear.clicked.connect(self.clear_table)
self.description.textChanged.connect(self.check_disable)
self.price.textChanged.connect(self.check_disable)
# Fill example data
self.fill_table()
@Slot()
def add_element(self):
des = self.description.text()
price = float(self.price.text())
self.table.insertRow(self.items)
description_item = QTableWidgetItem(des)
price_item = QTableWidgetItem(f"{price:.2f}")
price_item.setTextAlignment(Qt.AlignRight)
self.table.setItem(self.items, 0, description_item)
self.table.setItem(self.items, 1, price_item)
self.description.clear()
self.price.clear()
self.items += 1
@Slot()
def check_disable(self, s):
enabled = bool(self.description.text() and self.price.text())
self.add.setEnabled(enabled)
@Slot()
def plot_data(self):
# Get table information
series = QPieSeries()
for i in range(self.table.rowCount()):
text = self.table.item(i, 0).text()
number = float(self.table.item(i, 1).text())
series.append(text, number)
chart = QChart()
chart.addSeries(series)
chart.legend().setAlignment(Qt.AlignLeft)
self.chart_view.setChart(chart)
def fill_table(self, data=None):
data = self._data if not data else data
for desc, price in data.items():
description_item = QTableWidgetItem(desc)
price_item = QTableWidgetItem(f"{price:.2f}")
price_item.setTextAlignment(Qt.AlignRight)
self.table.insertRow(self.items)
self.table.setItem(self.items, 0, description_item)
self.table.setItem(self.items, 1, price_item)
self.items += 1
@Slot()
def clear_table(self):
self.table.setRowCount(0)
self.items = 0
class MainWindow(QMainWindow):
def __init__(self, widget):
super().__init__()
self.setWindowTitle("Tutorial")
# Menu
self.menu = self.menuBar()
self.file_menu = self.menu.addMenu("File")
# Exit QAction
exit_action = self.file_menu.addAction("Exit", self.close)
exit_action.setShortcut("Ctrl+Q")
self.setCentralWidget(widget)
if __name__ == "__main__":
# Qt Application
app = QApplication(sys.argv)
# QWidget
widget = Widget()
# QMainWindow using QWidget as central widget
window = MainWindow(widget)
window.resize(800, 600)
window.show()
# Execute application
sys.exit(app.exec())
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