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# Copyright (C) 2009, 2010 Roman Zimbelmann <romanz@lavabit.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
class Bar(object):
left = None
right = None
gap = None
def __init__(self, base_color_tag):
self.left = BarSide(base_color_tag)
self.right = BarSide(base_color_tag)
self.gap = BarSide(base_color_tag)
def add(self, *a, **kw):
self.left.add(*a, **kw)
def addright(self, *a, **kw):
self.right.add(*a, **kw)
def sumsize(self):
return self.left.sumsize() + self.right.sumsize()
def fixedsize(self):
return self.left.fixedsize() + self.right.fixedsize()
def shrink_by_removing(self, wid):
leftsize = self.left.sumsize()
rightsize = self.right.sumsize()
sumsize = leftsize + rightsize
# remove elemets from the left until it fits
if sumsize > wid:
while len(self.left) > 0:
leftsize -= len(self.left.pop(-1).string)
if leftsize + rightsize <= wid:
break
sumsize = leftsize + rightsize
# remove elemets from the right until it fits
if sumsize > wid:
while len(self.right) > 0:
rightsize -= len(self.right.pop(0).string)
if leftsize + rightsize <= wid:
break
sumsize = leftsize + rightsize
if sumsize < wid:
self.fill_gap(' ', (wid - sumsize), gapwidth=True)
def shrink_by_cutting(self, wid):
fixedsize = self.fixedsize()
if wid < fixedsize:
raise ValueError("Cannot shrink down to that size by cutting")
leftsize = self.left.sumsize()
rightsize = self.right.sumsize()
nonfixed_items = self.left.nonfixed_items()
itemsize = int(float(wid - rightsize - fixedsize) / nonfixed_items) + 1
for item in self.left:
if not item.fixed:
item.cut_off_to(itemsize)
self.fill_gap(' ', wid, gapwidth=False)
def fill_gap(self, char, wid, gapwidth=False):
del self.gap[:]
if not gapwidth:
wid = wid - self.sumsize()
if wid > 0:
self.gap.add(char * wid, 'space')
def combine(self):
return self.left + self.gap + self.right
class BarSide(list):
def __init__(self, base_color_tag):
self.base_color_tag = base_color_tag
def add(self, string, *lst, **kw):
cs = ColoredString(string, self.base_color_tag, *lst)
if 'fixedsize' in kw:
cs.fixed = kw['fixedsize']
self.append(cs)
def add_space(self, n=1):
self.add(' ' * n, 'space')
def sumsize(self):
return sum(len(item) for item in self)
def fixedsize(self):
n = 0
for item in self:
if item.fixed:
n += len(item)
else:
n += 1
return n
def nonfixed_items(self):
return sum(1 for item in self if not item.fixed)
class ColoredString(object):
fixed = False
def __init__(self, string, *lst):
self.string = string
self.lst = lst
def cut_off(self, n):
n = max(n, min(len(self.string), 1))
self.string = self.string[:-n]
def cut_off_to(self, n):
self.string = self.string[:n]
def __len__(self):
return len(self.string)
def __str__(self):
return self.string
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