Commit Graph

3054 Commits (pregraphics_formatters)

Author SHA1 Message Date
Tyler Goodlet ece57b2a1d Rename our main color 2020-10-24 20:18:03 -04:00
Tyler Goodlet 94a8ee6270 Optimize axis labels using `QPicture`
This is likely a marginal improvement but is slightly less execution and
adds a coolio black border around the label. Drop all the legacy code
from quantdom which was quite a convoluted mess for "coloring".
Had to tweak sticky offsets to get the crosshair to line up right; not
sure what that's all about yet.
2020-10-24 20:12:12 -04:00
Tyler Goodlet 13f32acfdf Only update history on bar increment
With the improved update logic on `BarsItems` it doesn't seem to be
necessary. Remove y sticky for overlays for now to avoid clutter that
looks like double draws when the last overlay value is close to the last
price.
2020-10-22 21:21:14 -04:00
Tyler Goodlet 8eb4344d86 More "thematic" default view values ;) 2020-10-22 20:42:46 -04:00
Tyler Goodlet 8c25892521 Fix (really sidestep) flat bar rendering issue(s)
It seems a plethora of problems (including drawing performance) are due
to trying to hack around the strange rendering bug in Qt with `QLineF`
with y1 == y2. There was all sorts of weirdness that would show up with
trying (a hack) to just set all 4 points to the same value including
strange infinite diagonal ghost lines randomly on charts. Instead, just
place hold these flat bar's 'body' line with a `None` and filter the
null values out before calling `QPainter.drawLines()`. This results
in simply no body lines drawn for these datums. We can probably `numba`
the filtering too if it turns out to be a bottleneck.
2020-10-22 20:35:51 -04:00
Tyler Goodlet 7be624de39 Implement `tickStrings` for price axis; use float_digits() 2020-10-22 20:22:21 -04:00
Tyler Goodlet 18dc809acb Add naive digits count routine 2020-10-22 14:05:35 -04:00
Tyler Goodlet f2c4a46c94 Center bars around index, adjust curves back to match... 2020-10-21 11:19:41 -04:00
Tyler Goodlet cd828db9e9 Show 24 bars to left on startup 2020-10-21 10:51:54 -04:00
Tyler Goodlet 875bc8be24 Add line dots cursors to curves by default 2020-10-21 10:46:56 -04:00
Tyler Goodlet 1f6b5da17e Add support for curve "cursors" using a filled dot
Add a new graphic `LineDot` which is a `pg.CurvePoint` that draws
a simple filled dot over a curve at the specified index.

Add support for adding these cursor-dots to the crosshair/mouse through
a new `CrossHair.add_curve_cursor()`. Discretized the vertical line
updates on the crosshair such that it's only drawn in the middle of
the current bar in the main chart.
2020-10-21 10:40:51 -04:00
Tyler Goodlet 88583d999a Add "follow mode"
Makes the chart act like tws where each new time step increment the
chart shifts to the right so that the last bar stays in place. This
gets things looking like a proper auto-trading UX.

Added a couple methods to ``ChartPlotWidget`` to make this work:
- ``.default_view()`` to set the preferred view based on user settings
- ``.increment_view()`` to shift the view one time frame right

Also, split up the `.update_from_array()` method to be curve/ohlc
specific allowing for passing in a struct array with a named field
containing curve data more straightforwardly. This also simplifies the
contest label update functions.
2020-10-20 09:13:27 -04:00
Tyler Goodlet 1902507703 Change scroll "center" to rightmost bar on screen 2020-10-19 21:32:50 -04:00
Tyler Goodlet c57f678295 Fix contents labels issues
Lookup overlay contents from the OHLC struct array (for now / to make
things work) and fix anchoring logic with better offsets to keep
contents labels super tight to the edge of the view box. Unfortunately,
had to hack the label-height-calc thing for avoiding overlap of graphics
with the label; haven't found a better solution yet and pyqtgraph seems
to require more rabbit holing to figure out something better. Slap in
some inf lines for over[sold/bought] rsi conditions thresholding.
2020-10-19 14:18:06 -04:00
Tyler Goodlet 851104dd31 Add an inf horizontal line helper 2020-10-19 14:01:57 -04:00
Tyler Goodlet 1706b67e00 Note the issues with the shared fsp array index.. 2020-10-19 14:01:25 -04:00
Tyler Goodlet 32974a118c Add hidpi comments, 300 bars in view at startup 2020-10-19 11:37:50 -04:00
Tyler Goodlet d3dc8fb219 Differentiate array schema by close field 2020-10-19 11:37:28 -04:00
Tyler Goodlet c7d5ea6e15 Fix static yrange and last bar double draw issues 2020-10-16 12:18:14 -04:00
Tyler Goodlet fc23b2180d Pass through fonts to axes 2020-10-16 12:15:33 -04:00
Tyler Goodlet 58d3234f74 Drop lingering print 2020-10-16 12:15:07 -04:00
Tyler Goodlet f4c38621d5 Add a default "bars from right" style setting 2020-10-15 15:08:56 -04:00
Tyler Goodlet 6f429b1104 These seem to be "faster" crosshair settings? 2020-10-15 15:08:16 -04:00
Tyler Goodlet cb72662350 Add warnings for shm cache misses 2020-10-15 15:07:56 -04:00
Tyler Goodlet 454b445b4b Add better shared mem writer task checking
If you have a common broker feed daemon then likely you don't want to
create superfluous shared mem buffers for the same symbol. This adds an
ad hoc little context manger which keeps a bool state of whether
a buffer writer task currently is running in this process. Before we
were checking the shared array token cache and **not** clearing it when
the writer task exited, resulting in incorrect writer/loader logic on
the next entry..

Really, we need a better set of SC semantics around the shared mem stuff
presuming there's only ever one writer per shared buffer at given time.
Hopefully that will come soon!
2020-10-15 15:02:42 -04:00
Tyler Goodlet e0613675c7 Fix chart command derp 2020-10-15 14:30:48 -04:00
Tyler Goodlet db273e1cd7 Up the mouse re-draw rate limit 2020-10-12 09:36:46 -04:00
Tyler Goodlet 18097fc33b Scale for hidpi pixmaps too 2020-10-02 12:13:50 -04:00
Tyler Goodlet 2302e59f1d 3k bars for now, ignore rtTime 2020-10-02 12:13:50 -04:00
Tyler Goodlet 8d9a6845c6 Add a naive maxmin calc to avoid frequent resizes
If we know the max and min in view then on datum updates we can avoid
resizing the y-range when a new max/min has not yet arrived.

This adds a very naive numpy calc in the drawing thread which we can
likely improve with a more efficient streaming alternative which can
also likely be run in a fsp subactor. Also, since this same calc is
essentially done inside `._set_yrange()` we will likely want to allow
passing the result into the method to avoid duplicate work.
2020-10-02 12:13:50 -04:00
Tyler Goodlet 6d5ccc6c3f Specify font size in pixels 2020-10-02 12:13:50 -04:00
Tyler Goodlet 8276b02f92 Further label and axis sizing tweaks for hidpi 2020-10-02 12:13:50 -04:00
Tyler Goodlet e524ee9045 Resize everything with HiDPI scaling on 2020-10-02 12:13:50 -04:00
Tyler Goodlet bceeaa56ff Drop ringbuf, didn't end up using 2020-10-02 12:13:50 -04:00
Tyler Goodlet acc8dd66f5 Add data._normalize.py ... 2020-10-02 12:13:50 -04:00
Tyler Goodlet bc65040601 Add shm support to kraken backend 2020-10-02 12:13:50 -04:00
Tyler Goodlet d4eb5ccca4 Handle vwap overlay with shm 2020-10-02 12:13:50 -04:00
Tyler Goodlet 8a4528c006 Always ask backend for ohlc dtype 2020-10-02 12:13:50 -04:00
Tyler Goodlet 47d4ec5985 Move _source under data package 2020-10-02 12:13:50 -04:00
Tyler Goodlet 8e2e695ba8 Revert project name removal; breaks shit elsewhere somehow.. 2020-10-02 12:13:50 -04:00
Tyler Goodlet 155c3eef2a Convert timeit thing to use print() 2020-10-02 12:13:50 -04:00
Tyler Goodlet 8832804bab Sub each new symbol to shm incrementing 2020-10-02 12:13:50 -04:00
Tyler Goodlet e3e219aa4b Add multi-symbol-buffer increment support 2020-10-02 12:13:50 -04:00
Tyler Goodlet 41e85ccaa9 Break wma calc into sync func 2020-10-02 12:13:50 -04:00
Tyler Goodlet 3f0e175011 Get bar oriented RSI working correctly 2020-10-02 12:13:50 -04:00
Tyler Goodlet 268e748417 Drop extra prefix in logs 2020-10-02 12:13:50 -04:00
Tyler Goodlet bfa7839370 Adopt official color 2020-10-02 12:13:50 -04:00
Tyler Goodlet 2fcbefa6e1 Use shm in fsp cascading
This kicks off what will be the beginning of hopefully a very nice
(soft) real-time financial signal processing system. We're keeping the
hack to "time align" curves (for now) with the bars for now by slapping
in an extra datum at index 0.
2020-10-02 12:13:50 -04:00
Tyler Goodlet 4383579cd0 Use shm array in chart-fsp task
Just like for the source OHLC, we now have the chart parent actor create
an fsp shm array and use it to read back signal data for plotting.
Some tweaks to get the price chart (and sub-charts) to load historical
datums immediately instead of waiting on an initial quote.
2020-10-02 12:13:50 -04:00
Tyler Goodlet ba4261f974 Add timeit prints 2020-10-02 12:13:50 -04:00