Added module for graphing cpu usage.

i3pystatus/cpu_usage_graph.py

@@ -0,0 +1,52 @@
+from i3pystatus.core.color import ColorRangeModule
+from i3pystatus.cpu_usage import CpuUsage
+from i3pystatus.core.util import make_graph
+
+
+class CpuUsageGraph(CpuUsage, ColorRangeModule):
+    """
+     Shows CPU usage as a Unicode graph.
+     The first output will be inacurate.
+
+     Linux only
+
+     Available formatters:
+
+     * {cpu_graph}   graph of cpu usage.
+     * {usage}       usage average of all cores
+     * {usage_cpu*}  usage of one specific core. replace "*" by core number starting at 0
+     * {usage_all}   usage of all cores separate. usess natsort when available(relevant for more than 10 cores)
+     """
+
+    settings = (
+        ("cpu", "cpu to monitor, choices are 'usage_cpu' for all or 'usage_cpu*'. R"
+                "eplace '*' by core number starting at 0."),
+        ("start_color", "Hex or English name for start of color range, eg '#00FF00' or 'green'"),
+        ("end_color", "Hex or English name for end of color range, eg '#FF0000' or 'red'")
+    )
+
+    graph_width = 15
+    format = '{cpu_graph}'
+    cpu = 'usage_cpu'
+
+    def init(self):
+        super().init()
+        self.cpu_readings = self.graph_width * [0]
+        self.colors = self.get_hex_color_range(self.start_color, self.end_color, int(100))
+
+    def run(self):
+        format_options = self.get_usage()
+        core_reading = format_options[self.cpu]
+
+        self.cpu_readings.insert(0, core_reading)
+        self.cpu_readings = self.cpu_readings[:self.graph_width]
+
+        graph = make_graph(self.cpu_readings, 100.0)
+        format_options.update({'cpu_graph': graph})
+
+        color = self.get_gradient(core_reading, self.colors)
+        self.output = {
+            "full_text": self.format.format_map(format_options),
+            'color': color
+        }
+