def build_canvas(self, e):
self.document = OCCanvas(self.netobj.canvas_size,
self.netobj.total_layer_count)
self.canvas = TiledDrawWidget(document=self.document)
self.wTree.get_object("drawingviewport").add(self.canvas)
# Connect network -> local_viewport
self.netobj.connect(
'draw', lambda e, l, b, p: self.document.draw_points(l, b, p))
self.netobj.connect('clear-layer',
lambda e, l: self.document.clear_layer(l))
self.netobj.connect('undo-request',
lambda e, l: self.document.undo_layer_action(l))
# Connect local_viewport -> network
self.document.stroke_observers.append(self.on_stroke)
self.canvas.show()
