# Copyright (C) 2022 The Qt Company Ltd. # SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause """PySide6 port of the Selected Point Configuration Example from Qt 6.5""" from PySide6.QtCore import QPointF, Slot from PySide6.QtGui import QColor, QIcon, QPainter from PySide6.QtWidgets import QMainWindow, QLineEdit, QLabel, QComboBox from PySide6.QtWidgets import QCheckBox, QWidget, QGridLayout, QHBoxLayout from PySide6.QtCharts import QLineSeries, QXYSeries, QChart, QChartView from typing import Union PointConfig = QXYSeries.PointConfiguration class ChartWindow(QMainWindow): def __init__(self, parent=None): super().__init__(parent) self.setWindowTitle("Chart") self._series = QLineSeries(self) self._series.setName("Customized series") self._series.setPointsVisible(True) self._series.append([QPointF(0, 7), QPointF(2, 4), QPointF(3, 5), QPointF(7, 4), QPointF(10, 5), QPointF(11, 1), QPointF(13, 3), QPointF(17, 6), QPointF(18, 3), QPointF(20, 2)]) selected_point_index_label = QLabel("Selected Point: ") self._selected_point_index_lineedit = QLineEdit() self._selected_point_index_lineedit.setReadOnly(True) self._selected_point_index_lineedit.setStyleSheet( "background-color: rgba(0, 0, 0, 0); border: 0px") color_label = QLabel("Color: ") self._color_combobox = QComboBox() color_strings = ["red", "orange", "yellow", "green", "blue", "indigo", "violet", "black"] for color_str in color_strings: self._color_combobox.addItem(QIcon(), color_str, QColor(color_str)) size_label = QLabel("Size: ") self._size_combobox = QComboBox() for size in [2, 3, 4, 6, 8, 10, 12, 15]: self._size_combobox.addItem(QIcon(), str(size), size) label_visibility_label = QLabel("Label Visibility: ") self._label_visibility_checkbox = QCheckBox() custom_label_label = QLabel("Custom Label: ") self._custom_label_lineedit = QLineEdit() self._series.clicked.connect(self._select_point) self._color_combobox.activated.connect(self._set_color) self._size_combobox.activated.connect(self._set_size) label_vis_checkbox = self._label_visibility_checkbox label_vis_checkbox.clicked.connect(self._set_label_visibility) clabel_lineedit = self._custom_label_lineedit clabel_lineedit.editingFinished.connect(self._set_custom_label) self._chart = QChart() self._chart.addSeries(self._series) self._chart.createDefaultAxes() chart_view = QChartView(self._chart) chart_view.setRenderHint(QPainter.RenderHint.Antialiasing) control_widget = QWidget(self) control_layout = QGridLayout(control_widget) control_layout.setColumnStretch(1, 1) control_layout.addWidget(selected_point_index_label, 0, 0) control_layout.addWidget(self._selected_point_index_lineedit, 0, 1) control_layout.addWidget(color_label, 1, 0) control_layout.addWidget(self._color_combobox, 1, 1) control_layout.addWidget(size_label, 2, 0) control_layout.addWidget(self._size_combobox, 2, 1) control_layout.addWidget(label_visibility_label, 3, 0) control_layout.addWidget(self._label_visibility_checkbox, 3, 1, 1, 2) control_layout.addWidget(custom_label_label, 4, 0) control_layout.addWidget(self._custom_label_lineedit, 4, 1) main_widget = QWidget(self) main_layout = QHBoxLayout(main_widget) main_layout.addWidget(chart_view) main_layout.setStretch(0, 1) main_layout.addWidget(control_widget) self.setCentralWidget(main_widget) self._select_point(4) @Slot(QPointF) def _select_point(self, point: Union[QPointF, int]): try: index = (self._series.points().index(point.toPoint()) if isinstance(point, QPointF) else point) except ValueError: # Do nothing if the place that was clicked on wasn't a point. return self._series.deselectAllPoints() self._series.selectPoint(index) self._selectedPointIndex = index self._selectedPointConfig = self._series.pointConfiguration(index) selected_point = self._series.at(index) selected_index_lineedit = self._selected_point_index_lineedit selected_index_lineedit.setText("(" + str(selected_point.x()) + ", " + str(selected_point.y()) + ")") config = self._series.pointConfiguration(index) color = config.get(PointConfig.Color) or self._series.color() size = config.get(PointConfig.Size) or self._series.markerSize() labelVisibility = (config.get(PointConfig.LabelVisibility) or self._series.pointLabelsVisible()) customLabel = config.get(PointConfig.LabelFormat) or "" combobox_value_list = [ (self._color_combobox, color.name(), color), (self._size_combobox, str(size), size) ] for box, value_str, value in combobox_value_list: if box.findData(value) < 0: box.addItem(value_str, value) box.setCurrentIndex(box.findData(value)) self._label_visibility_checkbox.setChecked(labelVisibility) self._custom_label_lineedit.setText(customLabel) @Slot(int) def _set_color(self, index: int): spc = self._selectedPointConfig spc[PointConfig.Color] = self._color_combobox.currentData() self._series.setPointConfiguration(self._selectedPointIndex, spc) @Slot(int) def _set_size(self, index: int): spc = self._selectedPointConfig spc[PointConfig.Size] = self._size_combobox.currentData() self._series.setPointConfiguration(self._selectedPointIndex, spc) @Slot(bool) def _set_label_visibility(self, checked: bool): spc = self._selectedPointConfig spc[PointConfig.LabelVisibility] = checked self._series.setPointConfiguration(self._selectedPointIndex, spc) @Slot() def _set_custom_label(self): spc = self._selectedPointConfig spc[PointConfig.LabelFormat] = self._custom_label_lineedit.text() self._series.setPointConfiguration(self._selectedPointIndex, spc)