How to render a part of QGraphicsScene and save It as image file PyQt5

Question

Suppose I have QGraphicsPixmapItem from loaded image which is added to QGraphicsScene. And suppose I\'ll add several QGraphicsPolygonItem

Answer 1

Untested, but using QGraphicsScene::render you should be able to do something like...

def _save_image(self):

    # Get region of scene to capture from somewhere.
    area = get_QRect_to_capture_from_somewhere()

    # Create a QImage to render to and fix up a QPainter for it.
    image = QImage(area.size(), QImage.Format_ARGB32_Premultiplied)
    painter = QPainter(image)

    # Render the region of interest to the QImage.
    self.scene.render(painter, image.rect(), area)
    painter.end()

    # Save the image to a file.
    image.save("capture.png")