How to use the ipycanvas.canvas.Canvas function in ipycanvas

self._touch_cancel_callbacks([(touch['x'], touch['y']) for touch in content['touches']])


class MultiCanvas(_CanvasBase):
    """Create a MultiCanvas widget with n_canvases Canvas widgets.

    Args:
        n_canvases (int): The number of canvases to create
        width (int): The width (in pixels) of the canvases
        height (int): The height (in pixels) of the canvases
    """

    _model_name = Unicode('MultiCanvasModel').tag(sync=True)
    _view_name = Unicode('MultiCanvasView').tag(sync=True)

    _canvases = List(Instance(Canvas)).tag(sync=True, **widget_serialization)

    def __init__(self, n_canvases=3, *args, **kwargs):
        """Constructor."""
        super(MultiCanvas, self).__init__(*args, _canvases=[Canvas() for _ in range(n_canvases)], **kwargs)

    def __getitem__(self, key):
        """Access one of the Canvas instances."""
        return self._canvases[key]

    def __setattr__(self, name, value):
        super(MultiCanvas, self).__setattr__(name, value)

        if name in ('caching', 'width', 'height'):
            for layer in self._canvases:
                setattr(layer, name, value)

def __setattr__(self, name, value):
        super(Canvas, self).__setattr__(name, value)

        canvas_attrs = ['fill_style', 'stroke_style', 'global_alpha', 'font', 'text_align',
                        'text_baseline', 'direction', 'global_composite_operation',
                        'line_width', 'line_cap', 'line_join', 'miter_limit', 'line_dash_offset',
                        'shadow_offset_x', 'shadow_offset_y', 'shadow_blur', 'shadow_color']
        if name in canvas_attrs:
            command = {
                'name': 'set',
                'attr': to_camel_case(name),
                'value': value
            }
            self._send_command(command)