Add a new bar class to display bar in curse UI

glances/outputs/glances_bars.py

@@ -0,0 +1,73 @@
+# -*- coding: utf-8 -*-
+#
+# This file is part of Glances.
+#
+# Copyright (C) 2015 Nicolargo <nicolas@nicolargo.com>
+#
+# Glances is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Glances 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 Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+"""Manage bars for Glances output."""
+
+# Import system lib
+from math import modf
+
+# Global vars
+curses_bars = [" ", "▏", "▎", "▍", "▌", "▋", "▊", "▉", "█"]
+
+
+class Bar(object):
+    """Manage bar (progression or status)
+
+    import sys
+    import time
+    b = Bar(10)
+    for p in range(0, 100):
+        b.set_percent(p)
+        print("\r%s" % b),
+        time.sleep(0.1)
+        sys.stdout.flush()
+
+    """
+
+    def __init__(self, size):
+        # Bar size
+        self.__size = size
+        # Bar current percent
+        self.__percent = 0
+
+    def get_size(self):
+        return self.__size
+
+    def set_size(self, size):
+        self.__size = size
+        return self.__size
+
+    def get_percent(self):
+        return self.__percent
+
+    def set_percent(self, percent):
+        assert percent >= 0
+        assert percent <= 100
+        self.__percent = percent
+        return self.__percent
+
+    def __str__(self):
+        """Return the bars"""
+        frac, whole = modf(self.get_size() * self.get_percent() / 100.0)
+        ret = curses_bars[8] * int(whole)
+        if frac > 0:
+            ret += curses_bars[int(frac * 8)]
+            whole += 1
+        ret += '_' * int(self.get_size() - whole)
+        return ret