Current File : //snap/core22/current/usr/share/subiquity/subiquitycore/ui/anchors.py
# Copyright 2015 Canonical, Ltd.
#
# 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, version 3.
#
# 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/>.
import logging
from urwid import (
int_scale,
SolidFill,
Text,
)
from subiquitycore.ui.container import (
Columns,
Pile,
WidgetWrap,
)
from subiquitycore.ui.utils import Color
from subiquitycore.ui.width import widget_width
log = logging.getLogger('subiquitycore.ui.anchors')
class HeaderColumns(Columns):
# The idea is to render output like this:
#
# [ pad ][ message ][ btn ][ pad ]
#
# The constraints are:
#
# 1. pad + message + btn + pad = maxcol
#
# 2. pad is at least 1
#
# 3. btn is fixed
#
# 4. message + btn is 79% of maxcol or 76, whichever is greater.
def column_widths(self, size, focus=False):
maxcol = size[0]
btn = widget_width(self.contents[2][0])
center = max(int_scale(79, 101, maxcol + 1), 76)
message = center - btn
pad = (maxcol - center)//2
if pad <= 0:
pad = 1
message = maxcol - 2 - btn
return [pad, message, btn, pad]
class Header(WidgetWrap):
""" Header Widget """
def __init__(self, title, right_icon):
if isinstance(title, str):
title = Text(title)
title = HeaderColumns([
Text(""),
title,
right_icon,
Text(""),
])
super().__init__(
Pile([
(1, Color.frame_header_fringe(
SolidFill("\N{lower half block}"))),
Color.frame_header(title),
(1, Color.frame_header_fringe(
SolidFill("\N{upper half block}"))),
]))
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