Curve-path colouring and cache mode settings are used (and can thus be
factored out of) all child types; this moves them into the parent type's
`.__init__()` and adjusts all sub-types match:
- the bulk was moved out of the `Curve.__init__()` including all
previous commentary around cache settings.
- adjust `BarItems` to use a `NoCache` mode and instead use the
`last_step_pen: pg.Pen` and `._pen` inside it's `.pain()` instead of
defining functionally duplicate vars.
- adjust all (transitive) calls to `BarItems` to use the new kwargs
names.
Allows callers to know if they should care about a particular viz
rendering call by immediately knowing if the graphics are in view. This
turns out super useful particularly when doing dynamic y-ranging overlay
calcs.
First, we rename what was `chart_maxmin()` -> `multi_maxmin()` and don't
`partial` it in to the `DisplayState`, just call it with correct `Viz`
ref inputs.
Second, as we've done with `ChartView.maybe_downsample_graphics()` use
the output from the main `Viz.update_graphics()` and feed it to the
`.maxmin()` calls for the ohlc and vlm chart but still deliver the same
output signature as prior. Also accept and use an optional profiler
input, drop `DisplayState.maxmin()` and add `.vlm_viz`.
Further perf related tweak to do with more efficient incremental
updates:
- only call `multi_maxmin()` if the main fast chart viz does a pixel
column step.
- mask out hist viz and vlm viz and all linked fsp `._set_yrange()`
calls for now until we figure out how to best optimize these updates
when considering the new group-scaled-by-% style for multicharts.
- drop `.enable_auto_yrange()` calls during startup.
Acts as short cut when pipe-lining from `Viz.update_graphics()` (which
now returns the needed in-view array-relative-read-slice as output) such
that `Viz.read()` and `.datums_range()` doesn't need to be called
internally multiple times. In this case where `i_read_range` is provided
we of course skip doing time index translations and consequently lookup
the appropriate (epoch-time) index indices for caching.
Removes the multi-maxmin usage as well as ensures appropriate `Viz` refs
are passed into the view methods now requiring it. Also drops the "back
linking" of the vlm chart view to the source OHLC chart since we're
going to add this as a default to the charting API.
algorandpa
Guillermo Rodriguez
Guillermo Rodriguez
Esmeralda Gallardo
jaredgoldman
Tyler Goodlet
goodboy