[modules]: introduce pamixer module

Signed-off-by: FraSharp <s23265@iisve.it>

bumblebee_status/modules/contrib/pamixer.py

@@ -0,0 +1,88 @@
+"""get volume level or control it
+
+Requires the following executable:
+    * pamixer
+
+Parameters:
+    * pamixer.percent_change: How much to change volume by when scrolling on the module (default is 4%)
+
+heavily based on amixer module
+"""
+import re
+
+import core.module
+import core.widget
+import core.input
+
+import util.cli
+import util.format
+
+class Module(core.module.Module):
+    def __init__(self, config, theme):
+        super().__init__(config, theme, core.widget.Widget(self.volume))
+
+        self.__level = "volume 0%"
+        self.__muted = True
+        self.__change = util.format.asint(
+            self.parameter("percent_change", "4%").strip("%"), 0, 200
+        )
+
+        events = [
+            {
+                "type": "mute",
+                "action": self.toggle,
+                "button": core.input.LEFT_MOUSE,
+            },
+            {
+                "type": "volume",
+                "action": self.increase_volume,
+                "button": core.input.WHEEL_UP,
+            },
+            {
+                "type": "volume",
+                "action": self.decrease_volume,
+                "button": core.input.WHEEL_DOWN,
+            },
+        ]
+
+        for event in events:
+            core.input.register(self, button=event["button"], cmd=event["action"])
+
+    def toggle(self, event):
+        self.set_parameter("--set-level 0")
+
+    def increase_volume(self, event):
+        self.set_parameter("--increase {}".format(self.__change))
+
+    def decrease_volume(self, event):
+        self.set_parameter("--decrease {}".format(self.__change))
+
+    def set_parameter(self, parameter):
+        util.cli.execute("pamixer {}".format(parameter))
+
+    def volume(self, widget):
+        if self.__level == "volume 0%":
+            self.__muted = True
+            return self.__level
+        m = re.search(r"([\d]+)\%", self.__level)
+        if m:
+            if m.group(1) != "0%" in self.__level:
+                self.__muted = False
+            return "volume {}%".format(m.group(1))
+        else:
+            return "volume 0%"
+
+    def update(self):
+        try:
+            volume = util.cli.execute("pamixer --get-volume-human".format())
+            self.__level = volume
+            self.__muted = False
+        except Exception as e:
+            self.__level = "volume 0%"
+
+    def state(self, widget):
+        if self.__muted:
+            return ["warning", "muted"]
+        return ["unmuted"]
+
+# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4