Source Code for Module nukescripts.localisationprefs

 1  """ 
 2  Code for handling changes in the localization default in the preferences 
 3  and applying that as knob defaults on Read nodes. 
 4  """ 
 5   
 6  import nuke 
 7  from PySide2.QtCore import QTimer 
 8   
 9   
10  # Name of the localisation policy prefs knob 
11  kLocalizationPolicyDefaultKnob = "LocalizationPolicyDefault" 
12   
13   
14 -def updateReadKnobLocalisationDefaults(value): 
15    """ Set the knob defaults for the nodes with the cacheLocal knob. """ 
16    nuke.knobDefault("localizationPolicy", value) 
17   
18   
19 -def onPrefsKnobChanged(): 
20    """ Callback from the preferences node.  If the default localisation  
21    policy has changed, update it on the read nodes. 
22    """ 
23    knob = nuke.thisKnob() 
24    if knob.name() == kLocalizationPolicyDefaultKnob: 
25      updateReadKnobLocalisationDefaults(knob.value()) 
26   
27   
28 -def initCallbacks(): 
29    """ Get the default localisation policy from the preferences node and set 
30    up the knob changed callback. 
31    """ 
32    prefsNode = nuke.toNode("preferences") 
33    knob = prefsNode.knob(kLocalizationPolicyDefaultKnob) 
34    updateReadKnobLocalisationDefaults(knob.value()) 
35    nuke.addKnobChanged(onPrefsKnobChanged, node=prefsNode) 
36   
37   
38  # This script is imported before the prefs node is loaded.  To ensure we get 
39  # the correct initial value for the localisation policy, use a QTimer to defer 
40  # initialisation.  initCallbacks will be called once the Qt event loop is 
41  # running. 
42  QTimer.singleShot(0, initCallbacks) 
43