Add vlm axis titles and humanized $vlm y-range

piker/ui/_fsp.py

@@ -33,7 +33,9 @@ import pyqtgraph as pg
 import trio
 from trio_typing import TaskStatus
 
+from ._axes import PriceAxis
 from .._cacheables import maybe_open_context
+from ..calc import humanize
 from ..data._sharedmem import (
     ShmArray,
     maybe_open_shm_array,
@@ -661,8 +663,11 @@ async def open_vlm_displays(
         # size view to data once at outset
         chart.view._set_yrange()
 
-        if not dvlm:
-            return
+        # add axis title
+        axis = chart.getAxis('right')
+        axis.set_title(' vlm')
+
+        if dvlm:
 
             # spawn and overlay $ vlm on the same subchart
             shm, started = await admin.start_engine_task(
@@ -685,7 +690,22 @@ async def open_vlm_displays(
 
             pi = chart.overlay_plotitem(
                 'dolla_vlm',
+                axis_kwargs={
+                    # 'humanize': True,
+                    # 'text': 'dvlm',
+                    'typical_max_str': ' 99.9 M ',
+                    'formatter': partial(
+                        humanize,
+                        digits=2,
+                    ),
+                },
+
             )
+
+            # add axis title
+            raxis = pi.getAxis('right')
+            raxis.set_title(' $vlm', view=pi.getViewBox())
+
             # add custom auto range handler
             pi.vb._maxmin = partial(maxmin, name='dolla_vlm')
 
@@ -710,7 +730,8 @@ async def open_vlm_displays(
             # ``.draw_curve()``.
             chart._overlays['dolla_vlm'] = shm
 
-        # XXX: old dict-style config before it was moved into the helper task
+            # XXX: old dict-style config before it was moved into the
+            # helper task
             #     'dolla_vlm': {
             #         'func_name': 'dolla_vlm',
             #         'zero_on_step': True,
@@ -729,6 +750,12 @@ async def open_vlm_displays(
 
             # }
 
+            for name, axis_info in pi.axes.items():
+                # lol this sux XD
+                axis = axis_info['item']
+                if isinstance(axis, PriceAxis):
+                    axis.size_to_values()
+
         # built-in vlm fsps
         for display_name, conf in {
             'vwap': {