Unification of text rendering and wrapping

[monfera]

This issue is a spinoff of the table PR

Currently, text rendering logic is not centralized - most of it is in svgUtils.convertToTspans but the new table plot type has wrapper logic, which does a few things, for example:

• wraps text to a specific width
• bypasses expensive logic (in this case, the entire svgUtils.convertToTspans) if there's no need

and table would do other things if it could, such as

• caching of resulting DOM fragments
• canceling pending asynchronous requests

This issue is the basis for a follow-up PR in which

• core: code unification is covered
• core: wrapping is made available centrally (individual plots will still need to specify constraints so it doesn't on its own turn all plots wrap-aware)
• core: avoid bypass of the heavy logic if there's no styling, markup or LaTeX
• core: take a look at KaTeX (perhaps it'd be a separate ticket on its own)
• core: optimize the number of getBoundingClientRect calls; convert to Drawing.bBox
• desirable: separation of code to logic (calculation) and rendering
• desirable: facilitating caching
• desirable: facilitating request cancelation

[monfera]

Self-assigning for now to keep tabs during PR review; feel free to reassign

[etpinard]

cc #382 and #1964

[luisrudge]

not sure this is the right place to ask, but would the implementation of this issue fix this glitch?

I'm already using automargin:true but the axis gets cropped anyway.

[jensb]

Is this still a relevant issue, and if so, is anything done to fix this?
I'd like to have scatter plot annotations with a fixed (set) width which autowrap text if it is too wide.
Ideally, the width should be settable by dragging the right margin of the annotation box.

[gvwilson]

Hi - this issue has been sitting for a while, so as part of our effort to tidy up our public repositories I'm going to close it. If it's still a concern, we'd be grateful if you could open a new issue (with a short reproducible example if appropriate) so that we can add it to our stack. Cheers - @gvwilson