2 files changed, 142 insertions, 0 deletions
diff --git a/examples/tricks/anytzclock.py b/examples/tricks/anytzclock.py
new file mode 100644
index 0000000..9ae2b05
--- /dev/null
+++ b/examples/tricks/anytzclock.py
@@ -0,0 +1,78 @@
+# -*- python -*-
+
+# A xpybar configuration example that demonstrates how you can
+# write a configuration that lets you change the clock between
+# any timezone you want using the keyboard or terminal.
+
+# This example requires the package python-posix_ipc, and the
+# example command requires the package cmdipc.
+
+# Caveat: This example is only written to support local displays.
+# If the host part of $DISPLAY contains a dot, this example will
+# not work as expected.
+
+# Caveat: The IPC objects are not cleaned up on exit.
+# After exiting you may want to run
+#     cmdipc -PQrk "/~${USER}.xpybar.$(echo "${DISPLAY}" | cut -d . -f 1)"
+
+# To switch between UTC and localtime run the command
+#     cmdipc -PQk "/~${USER}.xpybar.$(echo "${DISPLAY}" | cut -d . -f 1)" send -- tz ${THE_TIMEZONE_YOU_WANT}
+# You may want to add an executable file in your ~/.local/bin
+# (which should you include in your $PATH) containing the code
+#     #!/bin/sh
+#     exec cmdipc -PQk "/~${USER}.xpybar.$(echo "${DISPLAY}" | cut -d . -f 1)" send -- tz "$@"
+# You can then add a hotkey to xbindkeys running that command
+# with a timezone as a argument, or run it in the terminal.
+# If the timezone is omitted, local time is used.
+
+import time
+import threading
+
+from plugins.clock import Clock
+from plugins.tzclock import TZClock
+
+
+OUTPUT, HEIGHT, YPOS, TOP = 0, 12, 24, True
+
+
+time_format = '%Y-(%m)%b-%d %T, %a w%V, %Z'
+
+local_clock = Clock(format = time_format, sync_to = Clock.SECONDS)
+my_clock = local_clock
+
+
+def mqueue_wait():
+    import posix_ipc
+    global my_clock
+    qkey = '/~%s.xpybar.%s' % (os.environ['USER'], os.environ['DISPLAY'].split('.')[0])
+    q = posix_ipc.MessageQueue(qkey, posix_ipc.O_CREAT, 0o600, 8, 128)
+    while True:
+        message = q.receive(None)[0].decode('utf-8', 'replace').split(' ')
+        if message[0] == 'tz':
+            old_clock = my_clock
+            tz = '/'.join(message[1:])
+            try:
+                my_clock = local_clock if tz == '' else TZClock(timezone = tz, format = time_format)
+            except:
+                try:
+                    my_clock = local_clock if tz == '' else TZClock(timezone = tz.upper(), format = time_format)
+                except:
+                    print('%s: unknown typezone: %s' % (sys.argv[0], tz), file = sys.stderr)
+                    continue
+            if old_clock is not local_clock:
+                del old_clock
+            bar.invalidate() # Optional, just to force redrawing before the next second
+
+
+start_ = start
+def start():
+    start_()
+    async(mqueue_wait)
+    async(lambda : local_clock.continuous_sync(lambda : bar.invalidate()))
+
+
+def redraw():
+    text = '%s' % my_clock.read()
+    bar.clear()
+    bar.draw_coloured_text(0, 10, 0, 2, text)
+
diff --git a/examples/tricks/localutcclock.py b/examples/tricks/localutcclock.py
new file mode 100644
index 0000000..129a1d1
--- /dev/null
+++ b/examples/tricks/localutcclock.py
@@ -0,0 +1,64 @@
+# -*- python -*-
+
+# A xpybar configuration example that demonstrates how you can
+# write a configuration that lets you change the clock between
+# local time and UTC using the keyboard.
+
+# This example requires the package python-posix_ipc, and the
+# example command requires the package cmdipc.
+
+# Caveat: This example is only written to support local displays.
+# If the host part of $DISPLAY contains a dot, this example will
+# not work as expected.
+
+# Caveat: The IPC objects are not cleaned up on exit.
+# After exiting you may want to run
+#     cmdipc -PQrk "/~${USER}.xpybar.$(echo "${DISPLAY}" | cut -d . -f 1)"
+
+# To switch between UTC and localtime run the command
+#     cmdipc -PQk "/~${USER}.xpybar.$(echo "${DISPLAY}" | cut -d . -f 1)" send -- clock
+# You may want to add an executable file in your ~/.local/bin
+# (which should you include in your $PATH) containing the code
+#     #!/bin/sh
+#     exec cmdipc -PQk "/~${USER}.xpybar.$(echo "${DISPLAY}" | cut -d . -f 1)" send -- clock
+# You can then add a hotkey to xbindkeys running that command.
+
+import time
+import threading
+
+from plugins.clock import Clock
+
+
+OUTPUT, HEIGHT, YPOS, TOP = 0, 12, 24, True
+
+
+local_clock = Clock(format = '%Y-(%m)%b-%d %T, %a w%V, %Z', utc = False, sync_to = Clock.SECONDS)
+utc_clock   = Clock(format = '%Y-(%m)%b-%d %T, %a w%V, %Z', utc = True)
+
+my_clock = local_clock
+
+
+def mqueue_wait():
+    import posix_ipc
+    global my_clock
+    qkey = '/~%s.xpybar.%s' % (os.environ['USER'], os.environ['DISPLAY'].split('.')[0])
+    q = posix_ipc.MessageQueue(qkey, posix_ipc.O_CREAT, 0o600, 8, 128)
+    while True:
+        message = q.receive(None)[0].decode('utf-8', 'replace')
+        if message == 'clock':
+            my_clock = utc_clock if (my_clock is not utc_clock) else local_clock
+            bar.invalidate() # Optional, just to force redrawing before the next second
+
+
+start_ = start
+def start():
+    start_()
+    async(mqueue_wait)
+    async(lambda : local_clock.continuous_sync(lambda : bar.invalidate()))
+
+
+def redraw():
+    text = '%s' % my_clock.read()
+    bar.clear()
+    bar.draw_coloured_text(0, 10, 0, 2, text)
+