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authorMattias Andrée <maandree@operamail.com>2014-03-04 18:21:37 +0100
committerMattias Andrée <maandree@operamail.com>2014-03-04 18:21:37 +0100
commit6e0f05cf58db011ea93b838cb2cf6d6d4cfcd01f (patch)
tree3c048800efa0ba9f540989d12906b741b899cff7 /examples/stored-settings
parent-r support for continuous mode in comprehensive example (diff)
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add example: stored-settings
Signed-off-by: Mattias Andrée <maandree@operamail.com>
Diffstat (limited to 'examples/stored-settings')
-rw-r--r--examples/stored-settings58
1 files changed, 58 insertions, 0 deletions
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+# -*- python -*-
+
+# This example demonstrates how settings can be stored
+# and be transition from later.
+
+import os
+import time
+
+
+uses_adhoc_opts = True
+'''
+:bool `True` if the configuration script parses the ad-hoc settings
+'''
+
+
+# Get --temperature from Blueshift ad-hoc settigns
+temperature_to = int(parser.opts['--temperature'][0])
+
+# Get old temperature setting
+temperature_from = 6500
+storage_file = '/dev/shm/.blueshift-conf-%s-%s' % (os.environ['DISPLAY'], os.environ['USER'])
+if os.path.exists(storage_file):
+ with open(storage_file, 'rb') as file:
+ temperature_from = int(file.read().decode('utf-8', 'replace').split('\n')[0])
+
+# Store new temperature
+with open(storage_file, 'wb') as file:
+ file.write(str(temperature_to).encode('utf-8'))
+ file.flush()
+
+# Calculate transition time
+fadein_time = abs(temperature_to - temperature_from) * 5 / (6500 - 3700)
+fadein_steps = fadein_time * 10
+
+# Function for setting the colour temperature
+def adjust(alpha):
+ temp = temperature_to * alpha + temperature_from * (1 - alpha)
+ start_over()
+ temperature(temp, lambda t : divide_by_maximum(cmf_10deg(t)))
+ randr(0)
+
+# Perform transition
+if not (panicgate or temperature_to == temperature_from):
+ signal.signal(signal.SIGTERM, signal_SIGTERM)
+ dtime = fadein_time / fadein_steps
+ df = 1 / fadein_steps
+ trans = 0
+ while running:
+ try:
+ trans += df
+ if trans > 1:
+ break
+ adjust(trans)
+ time.sleep(dtime)
+ except KeyboardInterrupt:
+ running = False
+adjust(1)
+