[modules] re-enable layout-xkb

modules/core/layout-xkb.py

@@ -0,0 +1,65 @@
+# pylint: disable=C0111,R0903
+
+"""Displays the current keyboard layout using libX11
+
+Requires the following library:
+    * libX11.so.6
+and python module:
+    * xkbgroup
+
+Parameters:
+    * layout-xkb.showname: Boolean that indicate whether the full name should be displayed. Defaults to false (only the symbol will be displayed)
+    * layout-xkb.show_variant: Boolean that indecates whether the variant name should be displayed. Defaults to true.
+"""
+
+import bumblebee.input
+import bumblebee.output
+import bumblebee.engine
+
+has_xkb = True
+try:
+    from xkbgroup import *
+except ImportError:
+    has_xkb = False
+
+import logging
+log = logging.getLogger(__name__)
+
+class Module(bumblebee.engine.Module):
+    def __init__(self, engine, config):
+        super(Module, self).__init__(engine, config,
+            bumblebee.output.Widget(full_text=self.current_layout)
+        )
+        engine.input.register_callback(self, button=bumblebee.input.LEFT_MOUSE,
+            cmd=self._next_keymap)
+        engine.input.register_callback(self, button=bumblebee.input.RIGHT_MOUSE,
+            cmd=self._prev_keymap)
+        self._show_variant = bumblebee.util.asbool(self.parameter("show_variant", "true"))
+
+    def _next_keymap(self, event):
+        self._set_keymap(1)
+
+    def _prev_keymap(self, event):
+        self._set_keymap(-1)
+
+    def _set_keymap(self, rotation):
+        if not has_xkb: return
+
+        xkb = XKeyboard()
+        if xkb.groups_count < 2: return # nothing to doA
+        layouts = xkb.groups_symbols
+        idx = layouts.index(xkb.group_symbol)
+        xkb.group_symbol = str(layouts[(idx + rotation) % len(layouts)])
+
+    def current_layout(self, widget):
+        try:
+            xkb = XKeyboard()
+            log.debug("group num: {}".format(xkb.group_num))
+            name = xkb.group_name if bumblebee.util.asbool(self.parameter("showname")) else xkb.group_symbol
+            if self._show_variant:
+                return "{} ({})".format(name, xkb.group_variant) if xkb.group_variant else name
+            return name
+        except Exception:
+            return "n/a"
+
+# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4