PyQt5基礎學習-QPainter(繪制各種圖像) 1.qp.drawArc(繪制圓弧) 2. qp.drawChord(繪制帶弦的弧) 3.qp.drawPie(繪制扇形) 4.qp.drawEllipse(繪制橢圓) 5.QPolygon(繪制五邊形) 6.QImage(圖像)

主要繪制了圓弧, 帶弦的弧, 扇形, 繪制橢圓, 繪制五邊形和圖像

"""
繪制各種圖像

弧
圓形
橢圓
矩形(正方形)
多邊形
繪制圖像
"""
import sys, math
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtCore import *

class DrawAll(QWidget):
    def __init__(self):
        super(DrawAll, self).__init__()
        self.resize(600, 900)
        self.setWindowTitle('繪制各種圖形')

    def paintEvent(self, event):
        qp = QPainter()
        qp.begin(self)

        qp.setPen(Qt.blue)
        #繪制弧
        rect = QRect(0, 10, 100, 100)
        # alen: 1個alen等於1/16度
        qp.drawArc(rect, 0, 50 * 16)
        #通過弧繪制園
        qp.setPen(Qt.red)
        qp.drawArc(120, 10, 100, 100, 0, 360 * 16)

        #繪制帶弦的弧
        qp.drawChord(10, 120, 100, 100, 12, 130 * 16)

        #繪制扇形
        qp.drawPie(10, 240, 100, 100, 12, 130 * 16)

        #繪制橢圓
        qp.drawEllipse(120, 120, 150, 100)

        #繪制5邊形
        point1 = QPoint(140, 380)
        point2 = QPoint(270, 420)
        point3 = QPoint(290, 512)
        point4 = QPoint(290, 588)
        point5 = QPoint(200, 533)

        polygon = QPolygon([point1, point2, point3, point4, point5])
        qp.drawPolygon(polygon)

        # 繪制圖像
        image = QImage("D:\PyQt5_Study\picture\F6fhJr.jpg")
        rect = QRect(10, 600, image.width() / 3, image.height() / 3)
        qp.drawImage(rect, image)
        qp.end()



if __name__ == "__main__":
    app = QApplication(sys.argv)

    main = DrawAll()
    main.show()

    sys.exit(app.exec_())