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Use a global cache instead of a per window cache for grid size calculation

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Kovid Goyal 2020-01-25 11:20:25 +05:30
parent c46317f96f
commit f32ae10339
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GPG Key ID: 06BC317B515ACE7C
1 changed files with 20 additions and 36 deletions
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56
kitty/layout.py
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@ -3,7 +3,7 @@
# License: GPL v3 Copyright: 2016, Kovid Goyal <kovid at kovidgoyal.net>
from collections import namedtuple
from functools import partial
from functools import lru_cache, partial
from itertools import islice, repeat
from .constants import WindowGeometry
@ -11,7 +11,6 @@ from .fast_data_types import (
Region, set_active_window, swap_windows, viewport_for_window
)
# Utils {{{
central = Region((0, 0, 199, 199, 200, 200))
cell_width = cell_height = 20
@ -648,10 +647,23 @@ class Fat(Tall): # {{{
# }}}
@lru_cache()
def calc_grid_size(n):
if n <= 5:
ncols = 1 if n == 1 else 2
else:
for ncols in range(3, (n // 2) + 1):
if ncols * ncols >= n:
break
nrows = n // ncols
special_rows = n - (nrows * (ncols - 1))
special_col = 0 if special_rows < nrows else ncols - 1
return ncols, nrows, special_rows, special_col
class Grid(Layout): # {{{
name = 'grid'
layout_data_class = namedtuple('GridLayoutData', 'n, ncols, nrows, special_rows, special_col')
def remove_all_biases(self):
self.biased_rows = {}
@ -663,7 +675,7 @@ class Grid(Layout): # {{{
def apply_bias(self, idx, increment, num_windows, is_horizontal):
b = self.biased_cols if is_horizontal else self.biased_rows
ncols, nrows, special_rows, special_col = self.calc_grid_size(num_windows)
ncols, nrows, special_rows, special_col = calc_grid_size(num_windows)
def position_for_window_idx(idx):
row_num = col_num = 0
@ -705,18 +717,6 @@ class Grid(Layout): # {{{
setattr(self, attr, candidate)
return True
def calc_grid_size(self, n):
if n <= 5:
ncols = 1 if n == 1 else 2
else:
for ncols in range(3, (n // 2) + 1):
if ncols * ncols >= n:
break
nrows = n // ncols
special_rows = n - (nrows * (ncols - 1))
special_col = 0 if special_rows < nrows else ncols - 1
return ncols, nrows, special_rows, special_col
def layout_windows(self, num_windows, nrows, ncols, special_rows, special_col, on_col_done=lambda col_windows: None):
# Distribute windows top-to-bottom, left-to-right (i.e. in columns)
xlayout = self.variable_layout(self.xlayout, ncols, self.biased_cols)
@ -739,10 +739,7 @@ class Grid(Layout): # {{{
n = len(windows)
if n == 1:
return self.layout_single_window(windows[0])
ncols, nrows, special_rows, special_col = self.calc_grid_size(n)
layout_data = self.layout_data_class(n, ncols, nrows, special_rows, special_col)
for w in windows:
w.layout_data = layout_data
ncols, nrows, special_rows, special_col = calc_grid_size(n)
win_col_map = []
@ -765,14 +762,8 @@ class Grid(Layout): # {{{
self.between_blank_rect(win_col_map[i][0], win_col_map[i + 1][0])
def minimal_borders(self, windows, active_window, needs_borders_map):
try:
n, ncols, nrows, special_rows, special_col = self.layout_data_for_window(windows[0])
except Exception:
n = -1
if n != len(windows):
# Something bad happened
yield from Layout.minimal_borders(self, windows, active_window, needs_borders_map)
return
n = len(windows)
ncols, nrows, special_rows, special_col = calc_grid_size(n)
blank_row = [None for i in range(ncols)]
matrix = tuple(blank_row[:] for j in range(max(nrows, special_rows)))
wi = iter(windows)
@ -811,14 +802,7 @@ class Grid(Layout): # {{{
n = len(windows)
if n < 4:
return Tall.neighbors_for_window(self, window, windows)
try:
n, ncols, nrows, special_rows, special_col = self.layout_data_for_window(windows[0])
except Exception:
n = -1
if n != len(windows):
# Something bad happened
return Layout.neighbors_for_window(self, window, windows)
ncols, nrows, special_rows, special_col = calc_grid_size(n)
blank_row = [None for i in range(ncols)]
matrix = tuple(blank_row[:] for j in range(max(nrows, special_rows)))
wi = iter(windows)