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# vim:fileencoding=utf-8:noet
from __future__ import (unicode_literals, division, absolute_import, print_function)
import itertools
from powerline.segment import gen_segment_getter, process_segment, get_fallback_segment
from powerline.lib.unicode import u, safe_unicode
def requires_segment_info(func):
func.powerline_requires_segment_info = True
return func
def requires_filesystem_watcher(func):
func.powerline_requires_filesystem_watcher = True
return func
def new_empty_segment_line():
return {
'left': [],
'right': []
}
def add_spaces_left(pl, amount, segment):
return (' ' * amount) + segment['contents']
def add_spaces_right(pl, amount, segment):
return segment['contents'] + (' ' * amount)
def add_spaces_center(pl, amount, segment):
amount, remainder = divmod(amount, 2)
return (' ' * (amount + remainder)) + segment['contents'] + (' ' * amount)
expand_functions = {
'l': add_spaces_right,
'r': add_spaces_left,
'c': add_spaces_center,
}
class Theme(object):
def __init__(self,
ext,
theme_config,
common_config,
pl,
get_module_attr,
top_theme,
colorscheme,
main_theme_config=None,
run_once=False,
shutdown_event=None):
self.colorscheme = colorscheme
self.dividers = theme_config['dividers']
self.dividers = dict((
(key, dict((k, u(v))
for k, v in val.items()))
for key, val in self.dividers.items()
))
try:
self.cursor_space_multiplier = 1 - (theme_config['cursor_space'] / 100)
except KeyError:
self.cursor_space_multiplier = None
self.cursor_columns = theme_config.get('cursor_columns')
self.spaces = theme_config['spaces']
self.outer_padding = int(theme_config.get('outer_padding', 1))
self.segments = []
self.EMPTY_SEGMENT = {
'contents': None,
'highlight': {'fg': False, 'bg': False, 'attrs': 0}
}
self.pl = pl
theme_configs = [theme_config]
if main_theme_config:
theme_configs.append(main_theme_config)
get_segment = gen_segment_getter(
pl,
ext,
common_config,
theme_configs,
theme_config.get('default_module'),
get_module_attr,
top_theme
)
for segdict in itertools.chain((theme_config['segments'],),
theme_config['segments'].get('above', ())):
self.segments.append(new_empty_segment_line())
for side in ['left', 'right']:
for segment in segdict.get(side, []):
segment = get_segment(segment, side)
if segment:
if not run_once:
if segment['startup']:
try:
segment['startup'](pl, shutdown_event)
except Exception as e:
pl.error('Exception during {0} startup: {1}', segment['name'], str(e))
continue
self.segments[-1][side].append(segment)
def shutdown(self):
for line in self.segments:
for segments in line.values():
for segment in segments:
try:
segment['shutdown']()
except TypeError:
pass
def get_divider(self, side='left', type='soft'):
'''Return segment divider.'''
return self.dividers[side][type]
def get_spaces(self):
return self.spaces
def get_line_number(self):
return len(self.segments)
def get_segments(self, side=None, line=0, segment_info=None, mode=None):
'''Return all segments.
Function segments are called, and all segments get their before/after
and ljust/rjust properties applied.
:param int line:
Line number for which segments should be obtained. Is counted from
zero (botmost line).
'''
for side in [side] if side else ['left', 'right']:
parsed_segments = []
for segment in self.segments[line][side]:
if segment['display_condition'](self.pl, segment_info, mode):
process_segment(
self.pl,
side,
segment_info,
parsed_segments,
segment,
mode,
self.colorscheme,
)
for segment in parsed_segments:
self.pl.prefix = segment['name']
try:
width = segment['width']
align = segment['align']
if width == 'auto' and segment['expand'] is None:
segment['expand'] = expand_functions.get(align)
if segment['expand'] is None:
self.pl.error('Align argument must be “r”, “l” or “c”, not “{0}”', align)
try:
segment['contents'] = segment['before'] + u(
segment['contents'] if segment['contents'] is not None else ''
) + segment['after']
except Exception as e:
self.pl.exception('Failed to compute segment contents: {0}', str(e))
segment['contents'] = safe_unicode(segment.get('contents'))
# Align segment contents
if segment['width'] and segment['width'] != 'auto':
if segment['align'] == 'l':
segment['contents'] = segment['contents'].ljust(segment['width'])
elif segment['align'] == 'r':
segment['contents'] = segment['contents'].rjust(segment['width'])
elif segment['align'] == 'c':
segment['contents'] = segment['contents'].center(segment['width'])
# We need to yield a copy of the segment, or else mode-dependent
# segment contents can’t be cached correctly e.g. when caching
# non-current window contents for vim statuslines
yield segment.copy()
except Exception as e:
self.pl.exception('Failed to compute segment: {0}', str(e))
fallback = get_fallback_segment()
fallback.update(side=side)
yield fallback
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