Support for limiting min/max zoom/scale level

[ljuborados]

Is your feature request related to a problem? Please describe.

We have a somewhat basic requirement - limiting how much the chart can zoom,
e.g. this universally looks bad and we should never allow zooming into that much detail:

Describe the solution you'd like

Ideally a config option limiting max diff between from & to - either in logical representation or in time diff.
Less ideally, being able to return null or false from subscribeVisibleTimeRangeChange to prevent changing the visible time range.

Additional context

Tried calling setVisibleRange from inside subscribeVisibleTimeRangeChange but unfortunately UI 'jumps' to the scrolled to position first, and only after applies the range in setVisibleRange which comes with obvious UX issues.

Willing to lend a hand in a PR if this is something you guys would consider adding.

Thanks!

[SlicedSilver]

Linking related issue: #1279

Would it be right to summarise your request as the ability to set the following options:

• Minimum Bar Spacing
• Maximum Bar Spacing

Bar spacing is the gap between the centre points of bars. It is essentially the 'zoom' level. So Essentially, options for max and min zoom.

Is there anything else?

[ljuborados]

Absolutely would, that would handle the use-case.

Thanks!