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Sort rows by column on click

kivy_mainline_and_py3.8
Tyler Goodlet 2018-02-13 10:34:24 -05:00
parent 8e577cd0d0
commit e4ff113dfc
1 changed files with 26 additions and 20 deletions
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46
piker/ui/watchlist.py
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@ -39,7 +39,8 @@ def colorcode(name):
# border size
_bs = 5
_bs = 3
_color = [0.14]*4 # nice shade of gray
_kv = (f'''
#:kivy 1.10.0
@ -60,21 +61,21 @@ _kv = (f'''
outline_color: [0.1]*4
canvas.before:
Color:
rgb: [0.08]*4
rgb: {_color}
BorderImage:
pos: self.pos
size: self.size
<HeaderCell>
# bold: True
font_size: '20'
background_color: [0]*4
canvas.before:
Color:
rgb: [0.14]*4
rgb: {_color}
BorderImage: # use a fixed size border
pos: self.pos
size: [self.size[0] - {_bs}, self.size[1]]
# 0s are because the containing TickerTable already has spacing
border: [0, {_bs} , 0, {_bs}]
<TickerTable>
@ -162,10 +163,11 @@ class HeaderCell(Button):
def on_press(self, value=None):
# clicking on a col header indicates to rows by this column
# in `update_quotes()`
table = self.row.table
if self.row.is_header:
self.row.table.sort_key = self.key
table.sort_key = self.key
last = self.row.table.last_clicked_col_cell
last = table.last_clicked_col_cell
if last and last is not self:
last.underline = False
last.bold = False
@ -174,7 +176,9 @@ class HeaderCell(Button):
self.underline = True
self.bold = True
# mark this cell as the last
self.row.table.last_clicked_col_cell = self
table.last_clicked_col_cell = self
# sort and render the rows immediately
self.row.table.render_rows(table.quote_cache)
# allow highlighting of row headers for tracking
elif self.is_header:
@ -236,10 +240,11 @@ class Row(GridLayout):
class TickerTable(GridLayout):
"""A grid for displaying ticker quote records as a table.
"""
def __init__(self, sort_key='%', **kwargs):
def __init__(self, sort_key='%', quote_cache={}, **kwargs):
super(TickerTable, self).__init__(**kwargs)
self.symbols2rows = {}
self.sort_key = sort_key
self.quote_cache = quote_cache
# for tracking last clicked column header cell
self.last_clicked_col_cell = None
@ -252,6 +257,16 @@ class TickerTable(GridLayout):
self.add_widget(row)
return row
def render_rows(self, pairs: (dict, Row), sort_key: str = None):
"""Sort and render all rows on the ticker grid from ``pairs``.
"""
self.clear_widgets()
sort_key = sort_key or self.sort_key
for data, row in reversed(
sorted(pairs.values(), key=lambda item: item[0][sort_key])
):
self.add_widget(row) # row append
def header_row(headers, **kwargs):
"""Create a single "header" row from a sequence of keys.
@ -297,17 +312,8 @@ async def update_quotes(
if hdrcell.background_color != [0]*4:
hdrcell.background_color != color
def render_rows(pairs, sort_key='%'):
"""Sort and render all rows on the ticker grid.
"""
grid.clear_widgets()
sort_key = grid.sort_key
for data, row in reversed(
sorted(pairs.values(), key=lambda item: item[0][sort_key])
):
grid.add_widget(row) # row append
cache = {}
grid.quote_cache = cache
# initial coloring
for quote in first_quotes:
@ -317,7 +323,7 @@ async def update_quotes(
color_row(row, data)
cache[sym] = (data, row)
render_rows(cache, grid.sort_key)
grid.render_rows(cache)
# core cell update loop
while True:
@ -345,7 +351,7 @@ async def update_quotes(
color_row(row, data)
row._last_record = data
render_rows(cache, grid.sort_key)
grid.render_rows(cache)
async def run_kivy(root, nursery):