How to get the real width of the line chart?

[Demven]

Hello, and thank you for this amazing library.

I'm developing my custom X-axis labels, and I need to know the width of the chart to display it correctly. For some reason, there's blank space around the chart, and I couldn't find any solution to get rid of it and let the chart fill all the space inside the provided container:

On different screens, the chart takes different % of the available container width, so I can't calculate reliably the necessary width for the labels:

Two questions:

1. How to get the real width of the chart (excluding the empty space around)?
2. How to get rid of the space and let the chart fill the container entirely?

Many many thanks! I will watch this thread until the answer is provided by the developers and community. At the moment I have to use crazy calculations...