# Source code for pyqtgraph.widgets.MatplotlibWidget

    from matplotlib.backends.backend_qtagg import FigureCanvasQTAgg as FigureCanvas
    from matplotlib.backends.backend_qtagg import NavigationToolbar2QT as NavigationToolbar
    from matplotlib.figure import Figure

    from ..Qt import QtWidgets
    import typing

    __all__ = ['MatplotlibWidget']

    class MatplotlibWidget(QtWidgets.QWidget):
        """
        Implements a Matplotlib figure inside a QWidget.
        Use getFigure() and redraw() to interact with matplotlib.

        Example::

            mw = MatplotlibWidget()
            subplot = mw.getFigure().add_subplot(111)
            subplot.plot(x,y)
            mw.draw()
        """

        parent_default = None
        figsize_default = (5.0, 4.0)
        dpi_default = 100

        @typing.overload
        def __init__(self, figsize=(5.0, 4.0), dpi=100, parent=None):
            pass

        @typing.overload
        def __init__(self, parent=None, figsize=(5.0, 4.0), dpi=100):
            pass

        def __init__(self, *args, **kwargs):
            if (args and not isinstance(args[0], QtWidgets.QWidget)):
                figsize = args[0] if len(args) > 0 \
                    else kwargs.get("figsize", MatplotlibWidget.figsize_default)
                dpi = args[1] if len(args) > 1 \
                    else kwargs.get("dpi", MatplotlibWidget.dpi_default)
                parent = args[2] if len(args) > 2 \
                    else kwargs.get("parent", MatplotlibWidget.parent_default)
            else:
                parent = args[0] if len(args) > 0 \
                    else kwargs.get("parent", MatplotlibWidget.parent_default)
                figsize = args[1] if len(args) > 1 \
                    else kwargs.get("figsize", MatplotlibWidget.figsize_default)
                dpi = args[2] if len(args) > 2 \
                    else kwargs.get("dpi", MatplotlibWidget.dpi_default)
            super().__init__(parent)

            self.fig = Figure(figsize, dpi=dpi)
            self.canvas = FigureCanvas(self.fig)
            self.canvas.setParent(self)
            self.toolbar = NavigationToolbar(self.canvas, self)

            self.vbox = QtWidgets.QVBoxLayout()
            self.vbox.addWidget(self.toolbar)
            self.vbox.addWidget(self.canvas)

            self.setLayout(self.vbox)

        def getFigure(self):
            return self.fig

        def draw(self):
            self.canvas.draw()