From 885116ae466dc7570740b4f3c94ca5c8ebe15f3c Mon Sep 17 00:00:00 2001
From: Tyler Goodlet <jgbt@protonmail.com>
Date: Tue, 12 Apr 2022 11:40:48 -0400
Subject: [PATCH] Only update y-range from L1 mxmn when last index in view

We still have to always keep track of the last max and min
though.
---
 piker/ui/_display.py | 26 +++++++++++++++++++-------
 1 file changed, 19 insertions(+), 7 deletions(-)

diff --git a/piker/ui/_display.py b/piker/ui/_display.py
index 27fcc02e..82f12196 100644
--- a/piker/ui/_display.py
+++ b/piker/ui/_display.py
@@ -382,6 +382,7 @@ def graphics_update_cycle(
                 i_diff > 0  # no new sample step
                 and xpx < 4  # chart is zoomed out very far
                 and r >= i_step  # the last datum isn't in view
+                and liv
             )
             or trigger_all
         ):
@@ -399,7 +400,7 @@ def graphics_update_cycle(
             if (
                 (xpx < update_uppx or i_diff > 0)
                 or trigger_all
-                and r >= i_step
+                and liv
             ):
                 # TODO: make it so this doesn't have to be called
                 # once the $vlm is up?
@@ -549,7 +550,10 @@ def graphics_update_cycle(
                     l1.bid_label.fields['level']: l1.bid_label,
                 }.get(price)
 
-                if label is not None:
+                if (
+                    label is not None
+                    # and liv
+                ):
                     label.update_fields(
                         {'level': price, 'size': size}
                     )
@@ -558,19 +562,27 @@ def graphics_update_cycle(
                     # the relevant L1 queue?
                     # label.size -= size
 
-            # elif ticktype in ('ask', 'asize'):
-            elif typ in _tick_groups['asks']:
+            elif (
+                typ in _tick_groups['asks']
+                # TODO: instead we could check if the price is in the
+                # y-view-range?
+                # and liv
+            ):
                 l1.ask_label.update_fields({'level': price, 'size': size})
 
-            # elif ticktype in ('bid', 'bsize'):
-            elif typ in _tick_groups['bids']:
+            elif (
+                typ in _tick_groups['bids']
+                # TODO: instead we could check if the price is in the
+                # y-view-range?
+                # and liv
+            ):
                 l1.bid_label.update_fields({'level': price, 'size': size})
 
         # check for y-range re-size
         if (
             (mx > vars['last_mx']) or (mn < vars['last_mn'])
             and not chart._static_yrange == 'axis'
-            and r > i_step  # the last datum is in view
+            and liv
         ):
             main_vb = chart.view
             if (