Method blit

lib/matplotlib/backends/backend_qt.py:506–513

(self, bbox=None)

            QtCore.QTimer.singleShot(0, self._draw_idle)

    def blit(self, bbox=None):
        # docstring inherited
        if bbox is None and self.figure:
            bbox = self.figure.bbox  # Blit the entire canvas if bbox is None.
        # repaint uses logical pixels, not physical pixels like the renderer.
        l, b, w, h = (int(pt / self.device_pixel_ratio) for pt in bbox.bounds)
        t = b + h
        self.repaint(l, self.rect().height() - t, w, h)

    def _draw_idle(self):
        with self._idle_draw_cntx():