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