# 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/>.
import _curses
from ranger.ext.iter_tools import flatten
from ranger.shared import SettingsAware
class CursesShortcuts(SettingsAware):
"""
This class defines shortcuts to faciliate operations with curses.
color(*keys) -- sets the color associated with the keys from
the current colorscheme.
color_at(y, x, wid, *keys) -- sets the color at the given position
color_reset() -- resets the color to the default
addstr(*args) -- failsafe version of self.win.addstr(*args)
"""
def addstr(self, *args):
try:
self.win.addstr(*args)
except (_curses.error, TypeError):
pass
def addnstr(self, *args):
try:
self.win.addnstr(*args)
except (_curses.error, TypeError):
pass
def color(self, *keys):
"""Change the colors from now on."""
keys = flatten(keys)
attr = self.settings.colorscheme.get_attr(*keys)
try:
self.win.attrset(attr)
except _curses.error:
pass
def color_at(self, y, x, wid, *keys):
"""Change the colors at the specified position"""
keys = flatten(keys)
attr = self.settings.colorscheme.get_attr(*keys)
try:
self.win.chgat(y, x, wid, attr)
except _curses.error:
pass
def color_reset(self):
"""Change the colors to the default colors"""
CursesShortcuts.color(self, 'reset')