This also officially moves the code base to using `PyQt6` including all
necessary reference changes and enum namespace path moves.
Also includes a small `.ui.order_mode` fix to cancel any
`Order.price <= 0` and a name error fix with logging using `msg`,
which is already used for the input order msg..
This took a teensie bit of reworking in some `.ui` modules
more or less in the following order of functional dependence:
- add a `Ctl-R` kb-binding to trigger a `Viz.reset_graphics()` in
the kb-handler task `handle_viewmode_kb_inputs()`.
- call the new method on all `Viz`s (& for all sample-rates) and
`DisplayState` refs provided in a (new input)
`dss: dict[str, DisplayState]` table, which was originally inite-ed
from the multi-feed display loop (so orig in `.graphics_update_loop()`
but now provided as an input to that func, see below..)
- `._interaction`: allow binding in `async_handler()` kwargs (`via
a `functools.partial`) passed to `ChartView.open_async_input_handler()`
such that arbitrary inputs to our kb+mouse handler funcs can accept
"wtv we desire".
- use ^ to bind in the aforementioned `dss` display-state table to
said handlers!
- define the `dss` table (as mentioned) inside `._display.display_symbol_data()`
and pass it into the update loop funcs as well as the newly augmented
`.open_async_input_handler()` calls,
- drop calling `chart.view.open_async_input_handler()` from the
`.order_mode.open_order_mode()`'s enter block and instead factor it
into the caller to support passing the `dss` table to the kb
handlers.
- comment out the original history update loop handling of forced `Viz`
redraws entirely since we now have a manual method via `Ctl-R`.
- now, just update the `._remote_ctl.dss: dict` with this table since
we want to also provide rc for **all** loaded feeds, not just the
currently shown one/set.
- docs, naming and typing tweaks to `._event.open_handlers()`
In theory the `async for msg` loop can be re-purposed without having to
always call `remote_annotate()` so factor it into a new
`serve_rc_annots()` and then just call it from the former (for now) with
the wrapping `try:` block outside to delete per-client-ctx annotation
instance sets. Also, use some type aliases instead of repeatedly
defining the same complex `dict`-table defs B)
Since we can and want to eventually allow remote control of pretty much
all UIs, this drafts out a new `.ui._remote_ctl` module with a new
`@tractor.context` called `remote_annotate()` which simply starts a msg
loop which allows for (eventual) initial control of a `SelectRect`
through IPC msgs.
Remote controller impl deats:
- make `._display.graphics_update_loop()` set a `._remote_ctl._dss:
dict` for all chart actor-global `DisplayState` instances which can
then be controlled from the `remote_annotate()` handler task.
- also stash any remote client controller `tractor.Context` handles in
a module var for broadband IPC cancellation on any display loop
shutdown.
- draft a further global map to track graphics object instances since
likely we'll want to support remote mutation where the client can use
the `id(obj): int` key as an IPC handle/uuid.
- just draft out a client-side `@acm` for now: `open_annots_client()` to
be filled out in up coming commits.
UI component tweaks in support of the above:
- change/add `SelectRect.set_view_pos()` and `.set_scene_pos()` to allow
specifying the rect coords in either of the scene or viewbox domains.
- use these new apis in the interaction loop.
- add a `SelectRect.add_to_view()` to avoid having annotation client
code knowing "how" a graphics obj needs to be added and can instead
just pass only the target `ChartView` during init.
- drop all the status label updates from the display loop since they
don't really work all the time, and probably it's not a feature we
want to keep in the longer term (over just console output and/or using
the status bar for simpler "current state / mkt" infos).
- allows a bit of simplification of `.ui._fsp` method APIs to not pass
around status (bar) callbacks as well!
Since it's depended on by `.data` stuff as well as pretty much
everything else, makes more sense to expose it as a top level module
(and maybe eventually as a subpkg as we add to it).
Since there's a growing list of top level mods which are more or less
utils/tools for working with the runtime; begin to move them into a new
subpkg starting with a new `.toolz.debug`.
Start with,
- a new `open_crash_handller()` for doing breakpoints around blocks that
might error.
- move in what was `piker._profile` into `.toolz.profile` and adjust all
importing appropriately.
Since we only ever want to do incremental y-range calcs based on the
price always skip any tick types emitted by the data daemon which aren't
defined in the fundamental set. Further, toss in a new `debug_n_trade:
bool` toggle which by default turns off all loggin and profiler calls;
if you want to do profiling this has to now be adjusted manually!
Avoid unnecessarily re-rendering the wrong (1min OHLC history) chart
and/or other such charts with update tasks listening to the sampler
stream. Instead only redraw in tasks which are updating vizs which match
the actual details of the backfill event.
We can probably also eventually match against a range tuple (emitted in
the msg) and then have the task further only update the formatter layer
unless the range is actually in view?
It's no longer part of the default OHLCV array-buffer schema and just
generally we should be processing and managing **any** non source data
in the FSP subsystem(s) despite it maybe being provided as a default by
some backends.
Including changing to `LinkedSplits.mkt: MktPair` and adding an explicit
setter method for setting it and being sure that nothing breaks
in the display system init!
For this commit we leave in warning access to `LinkedSplits.symbol` but
will remove in following commit.
Stash it for now in the (now mutable by default) `.shm_write_opts` and
have the new `Flume._has_vlm: bool` (only set to false internally by
feed layer) which can be read via new public `.has_vlm()` predicate.
Move out the old `.ui/_fsp` helper logic to this flume method.
This is particularly more "good looking" when we boot with a pair that
doesn't have historical 1s OHLC and thus the fast chart is empty from
outset. In this case it's a lot nicer to be already zoomed to
a comfortable preset number of "datums in view" even when the history
isn't yet filled in.
Adjusts the chart display `Viz.default_view()` startup to explicitly
ensure this happens via the `do_min_bars=True` flag B)
For the purposes of eventually trying to resolve last-step indexing
synchronization (an intermittent but still existing) issue(s) that can
happen due to races during history frame query and shm writing during
startup. In fact, here we drop all `hist_viz` info queries from the main
display loop for now anticipating that this code will either be removed
or improved later.
Instead delegate directly to `Viz.default_view()` throughout charting
startup and interaction handlers.
Also add a `ChartPlotWidget.reset_graphics_caches()` context mngr which
resets all managed graphics object's cacheing modes on enter and
restores them on exit for simplified use in interaction handling code.
This finally seems to mitigate all the "smearing" and "jitter" artifacts
when using Qt's "coordinate cache" graphics-mode:
- whenever we're in a mouse interaction (as per calls to
`ChartView.start/signal_ic()`) we simply disable the caching mode (set
`.NoCache` until the interaction is complete.
- only do this (for now) during a pan since it doesn't seem to be an
issue when zooming?
- ensure disabling all `Viz.graphics` and `.ds_graphics` to be agnostic
to any case where there's both a zoom and a pan simultaneously (not
that it's easy to do manually XD) as well as solving the problem
whenever an OHLC series is in traced-and-downsampled mode (during low
zoom).
Impl deatz:
- rename `ChartView._ic` -> `._in_interact: trio.Event`
- add `.ChartView._interact_stack: ExitStack` which we use to open.
and close the `FlowGraphics.reset_cache()` mngrs from mouse handlers.
- drop all the commented per-subtype overrides for `.cache_mode: int`.
- write up much better doc strings for `FlattenedOHLC` and `StepCurve`
including some very basic ASCII-art diagrams.
When zoomed in alot, and thus a quote driven y-range resize takes place,
it makes more sense to increase the `range_margin: float` input to
`._set_yrange()` to ensure all L1 labels stay in view; generally the
more zoomed in,
- the smaller the y-range is and thus the larger the needed margin (on
that range's dispersion diff) would be,
- it's more likely to get a last datum move outside the previous range.
Also, always do overlayT style scaling on the slow chart whenever it
treads.
Somewhat of a facepalm but, for incremental update of the auto-yrange
from quotes in the display loop obviously we only want to update the
associated `Viz`/viewbox for *that* fqsn. Further we don't need to worry
about the whole "tick margin" stuff since `._set_yrange()` already adds
margin to the yrange by default; thus we remove all of that.
Since each symbol's feed is multiplexed by quote key (an fqsn), we can
avoid scaling overlay curves on any single update, presuming each quote
driven cycle will trigger **only** the specific symbol's curve.
Also disables fsp `.interact_graphics_cycle()` calls for now since it
seems they aren't really that critical to and we should be using the
same technique as above (doing incremental y-range checks/updates) for
FSPs as well.
Since we pretty much always want the 'bottom' and any side that is not
declared by the caller move the axis hides into this method. Lets us
drop the same calls in `.ui._fsp` and `._display`.
This also disables the auto-ranging back-linking for now since it
doesn't seem to be working quite yet?
In the (incrementally updated) display loop we have range logic that is
incrementally updated in real-time by streams, as such we don't really
need to update all linked chart's (for any given, currently updated
chart) y-ranges on calls of each separate (sub-)chart's
`ChartView.interact_graphics_cycle()`. In practise there are plenty of
cases where resizing in one chart (say the vlm fsps sub-plot) requires
a y-range re-calc but not in the OHLC price chart. Therefore
we always avoid doing more resizing then necessary despite it resulting
in potentially more method call overhead (which will later be justified
by better leveraging incrementally updated `Viz.maxmin()` and
`media_from_range()` calcs).
use the new `do_overlay_scaling: bool` since we know each feed will have
its own updates (cuz multiplexed by feed..) and we can avoid
ranging/scaling overlays that will make their own calls.
Also, pass in the last datum "brighter" color for ohlc curves as it was
originally (and now that we can pass that styling bit through).
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.
When a new tick comes in but no new time step / bar is yet needed (to be
appended) we can simply adjust **only** the last bar datum
lines-graphic(s) to avoid a redraw of the preceding `QPainterPath` on
every tick. Do this by calling `Viz.draw_last()` on the fast and slow
chart and adjusting the guards around calls to `Viz.update_graphics()`
(which *does* update paths) to only enter when there's a `do_px_step`
condition. We can stop calling `main_viz.plot.vb._set_yrange()` on view
treading cases since the range should have already been adjusted by the
clearing-tick processing mxmn updates.
Further this changes,
- the `chart_maxmin()` helper (which we should eventually just get rid
of) to take bound in `Viz`s for the ohlc and vlm chart instead of the
chart widget handles.
- extend the guard around hist viz yranging to only enter when not in
"axis mode" - the same as for the fast viz.
Since we removed the `Viz.update_graphics()` call from the main rt loop
we have to be sure to call it in the history chart incr-loop to avoid
a gap between the last bar and prior history since startup. We only
need to update on tread since that should be the only time a full redraw
is ever necessary, ow only the last datum is needed.
Further this moves the graphics cycle func's profiler init to the top in
an effort to get more correct latency measures.
Tyler Goodlet
Guillermo Rodriguez