Pyside6绘制折线图并计算面积

小丑不冷

于 2024-07-23 13:07:39 发布

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文章标签： python pyqt

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Pyside6绘制折线图并计算面积
在这里插入图片描述

import sys
import random
from PySide6.QtWidgets import QApplication, QWidget, QVBoxLayout, QMainWindow
from PySide6.QtCore import Qt, QRectF, QPointF, Signal
from PySide6.QtGui import QPainter, QPen, QColor, QMouseEvent

class PlotArea(QWidget):
    area_calculated = Signal(float)  # 定义一个信号，用于传递计算的面积

    def __init__(self, parent=None):
        super().__init__(parent)
        self.data = [random.random() * 100 for _ in range(100)]  # 生成随机数据
        self.start_index = None
        self.end_index = None

    def paintEvent(self, event):
        painter = QPainter(self)
        painter.setRenderHint(QPainter.Antialiasing)
        painter.fillRect(event.rect(), Qt.white)