timeline_mod.py

########################################################
# modification of the regular timeline drag for maya   #
# by Tom Bailey - brimblashman@gmail.com               #
# only works for 'film' 24 fps                         #
# just run this in python, then click+drag on your     #
# timeline, alt+drag will smoothly scrub with no snap  #
# ctrl+drag will retime the timeline to snap to every  #
# 4 frames (6fps @ 24 fps)                             #
########################################################

import maya.mel
import pymel.core as pm
def beginDrag(*args):
    mods = pm.getModifiers()
    
    update = pm.timeControl( aPlayBackSliderPython, query=True, globalTime=True)
    print update
    if (mods & 1) > 0: print ' Shift'
    if (mods & 2) > 0: print ' CapsLock'
    if (mods & 4) > 0: # 'Ctrl
        cmds.currentUnit(time='6fps', updateAnimation=True)
    if (mods & 8) > 0: # 'alt'
        pm.timeControl( aPlayBackSliderPython, edit=True, snap=False)
    
def endDrag(*args):
    cmds.currentUnit(time='film', updateAnimation=True)
    snapState = pm.timeControl( aPlayBackSliderPython, query=True, snap=True)
    if not snapState:
        pm.timeControl( aPlayBackSliderPython, edit=True, snap=True)
        pm.setCurrentTime(int(pm.getCurrentTime()))


aPlayBackSliderPython = maya.mel.eval('$tmpVar=$gPlayBackSlider')
pm.timeControl( aPlayBackSliderPython, edit=True, pressCommand=beginDrag )
pm.timeControl( aPlayBackSliderPython, edit=True, releaseCommand=endDrag )