38. PyQt6 贝塞尔曲线
2023-10-17 python 666
import sys from PyQt6.QtWidgets import QApplication, QWidget from PyQt6.QtGui import QGuiApplication, QPainter, QPainterPath class App(QWidget): def __init__(self): super().__init__() self.text = None self.setMinimumSize(50, 50) self.initUI() def initUI(self): self.setWindowTitle("PyQt6 贝塞尔曲线") self.setGeometry(100, 100, 400, 300) self.center() def paintEvent(self, event): qp = QPainter() qp.begin(self) qp.setRenderHint(QPainter.RenderHint.Antialiasing) self.drawBezierCurve(qp) qp.end() def drawBezierCurve(self, qp): path = QPainterPath() path.moveTo(30, 30) path.cubicTo(30, 30, 200, 350, 350, 30) qp.drawPath(path) def center(self): qr = self.frameGeometry() cp = QGuiApplication.primaryScreen().availableGeometry().center() qr.moveCenter(cp) self.move(qr.topLeft()) if __name__ == "__main__": app = QApplication(sys.argv) cls_app = App() cls_app.show() sys.exit(app.exec())
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