fix xdisplay bug for the case where DISPLAY is not set + xdisplay demo

Signed-off-by: Mattias Andrée <maandree@operamail.com>

1 files changed, 38 insertions, 0 deletions

diff --git a/examples/plugins/xdisplay b/examples/plugins/xdisplay
new file mode 100644
index 0000000..4c90d90
--- /dev/null
+++ b/examples/plugins/xdisplay
@@ -0,0 +1,38 @@
+# -*- python -*-
+
+# A xpybar configuration example testing the features of plugins.xdisplay
+
+import time
+import threading
+
+from plugins.xdisplay import XDisplay
+from plugins.clock import Clock
+
+
+OUTPUT, HEIGHT, YPOS, TOP = 0, 12, 24, True
+
+
+clock = Clock(sync_to = 30 * Clock.MINUTES)
+
+start_ = start
+def start():
+    start_()
+    async(lambda : clock.continuous_sync(lambda : bar.invalidate()))
+
+
+def redraw():
+    x = XDisplay()
+    
+    text = 'No DISPLAY environment variable set'
+    if x.connection is not None:
+        text = 'Connection: %s │ %s │ Display: %i │ %s'
+        text %= (x.connection,
+                 'Default host' if x.host is None else ('Host: %s' % x.host),
+                 x.display,
+                 'Default screen' if x.screen is None else ('Screen: %i' % x.screen))
+    
+    text += ' │ VT: %i' % x.vt
+    
+    bar.clear()
+    bar.draw_coloured_text(0, 10, 0, 2, text)
+