QGraphicsScene保存图片
1 import sys
2 import time
3 from PySide6.QtCore import *
4 from PySide6.QtGui import *
5 from PySide6.QtWidgets import *
6
7 class MyQWidget(QWidget):
8 def __init__(self, parent = ..., f = ...):
9 super().__init__(parent, f)
10
11 self.gs = QGraphicsScene()
12 rc = QGraphicsEllipseItem(QRect(20, 40, 400, 800))
13 self.gs.addItem(rc)
14 self.gv = QGraphicsView(self, scene=self.gs)
15
16 self.btn = QPushButton()
17 self.btn.setText('保存图片')
18 self.btn.clicked.connect(self.button_clicked)
19
20 self.ly = QVBoxLayout()
21 self.ly.addWidget(self.btn)
22 self.ly.addWidget(self.gv)
23
24 self.setLayout(self.ly)
25
26 def button_clicked(self):
27 pixmap = QPixmap(int(self.gs.width()), int(self.gs.height()))
28 pixmap.fill(Qt.GlobalColor.white)
29 painter = QPainter(pixmap)
30 self.gs.render(painter)
31 painter.end()
32 pixmap.save('./test.png')
33
34 class MyMainWindow(QMainWindow):
35 def __init__(self, parent = ..., flags = ...):
36 super().__init__(parent, flags)
37
38 self.centerWg = MyQWidget(self, Qt.WindowType.Widget)
39 self.setCentralWidget(self.centerWg)
40
41 if '__main__' == __name__:
42 app = QApplication(sys.argv)
43 win = MyMainWindow(None, Qt.WindowType.Window)
44 win.setFixedSize(QSize(400, 300))
45 win.show()
46 sys.exit(app.exec())
