io_mspgl/util.py

   1 class Progress:
   2         def __init__(self, context):
   3                 self.task = ""
   4                 self.start = 0.0
   5                 self.delta = 1.0
   6                 self.last = 0.0
   7                 self.stack = []
   8                 if context:
   9                         self.window_manager = context.window_manager
  10                         self.window_manager.progress_begin(0.0, 1.0)
  11                 else:
  12                         self.window_manager = None
  13
  14         def push_task(self, task, low, high):
  15                 self.stack.append((self.task, self.start, self.delta))
  16                 self.set_task(task, low, high)
  17
  18         def push_task_slice(self, task, index, count):
  19                 self.push_task(task, index/count, (index+1)/count)
  20
  21         def pop_task(self):
  22                 if not self.stack:
  23                         return
  24
  25                 self.set_progress(1.0)
  26                 self.task, self.start, self.delta = self.stack.pop()
  27
  28         def set_task(self, task, low, high):
  29                 if self.stack:
  30                         outer = self.stack[-1]
  31                         if outer[0]:
  32                                 task = "{}: {}".format(outer[0], task)
  33                         low = outer[1]+low*outer[2]
  34                         high = outer[1]+high*outer[2]
  35
  36                 self.task = task
  37                 self.start = low
  38                 self.delta = high-low
  39
  40                 self.set_progress(0.0)
  41
  42         def set_task_slice(self, task, index, count):
  43                 self.set_task(task, index/count, (index+1)/count)
  44
  45         def set_progress(self, value):
  46                 value = self.start+self.delta*value
  47                 if value>self.last+0.01:
  48                         if self.window_manager:
  49                                 self.window_manager.progress_update(value)
  50                         self.last = value