progress bar convenience class for Maya

maya_progress_bar.py

__author__ = "[email protected]"
__created__ = "2022-08-11"

from maya import cmds


class ProgressBar(object):
    """
    Convenience class for showing a progress bar in Maya

    ---- simple example

    for i in range(20):
        ProgressBar("Waiting for something", total=20)
        time.sleep(0.3)


    ---- little more complex example

    example_list = range(20)
    
    for i in example_list:
        ProgressBar("ProgressTitle", total=len(example_list), status="example: {}".format(i), wide=True)
        time.sleep(0.3)


    """
    PROGRESS_BARS = {}
    
    def __new__(cls, title, total, status="", wide=True, *args, **kwargs):
        
        if ProgressBar.PROGRESS_BARS.get(title):
            current_amount = cmds.progressWindow(query=True, progress=True)
            new_amount = current_amount + 1
            if new_amount < total:
                cmds.progressWindow(edit=True, progress=new_amount, status=status)
                return None
            
            if new_amount == total:
                cmds.progressWindow(endProgress=True)
                ProgressBar.PROGRESS_BARS.pop(title)
                return None
        
        return super(ProgressBar, cls).__new__(cls, *args, **kwargs)
    
    def __init__(self, title, total, status="", wide=True):
        cmds.progressWindow(endProgress=True)
        
        if wide:
            init_status = " " * 250
        else:
            init_status = status
        
        cmds.progressWindow(title=title, progress=1, maxValue=total, status=init_status, isInterruptable=False)
        cmds.progressWindow(edit=True, status=status)
        
        ProgressBar.PROGRESS_BARS[title] = self



if __name__ == "__main__":
    
    import time
    
    example_list = range(100)
    
    for i in example_list:
        ProgressBar("Progress is being made...", total=len(example_list))
        time.sleep(0.03)

Example