src/pgu/gui/misc.py

   1 from const import *
   2 import widget
   3 import pguglobals
   4
   5 class ProgressBar(widget.Widget):
   6     """A progress bar.
   7
   8     <pre>ProgressBar(value,min,max)</pre>
   9
  10     <dl>
  11     <dt>value<dd>starting value
  12     <dt>min<dd>minimum value rendered on the screen (usually 0)
  13     <dt>max<dd>maximum value
  14     </dl>
  15
  16     <strong>Example</strong>
  17     <code>
  18     w = gui.ProgressBar(0,0,100)
  19     w.value = 25
  20     </code>
  21     """
  22
  23     def __init__(self,value,min,max,**params):
  24         params.setdefault('cls','progressbar')
  25         widget.Widget.__init__(self,**params)
  26         self.min,self.max,self.value = min,max,value
  27
  28     def paint(self,s):
  29         r = pygame.rect.Rect(0,0,self.rect.w,self.rect.h)
  30         r.w = r.w*(self.value-self.min)/(self.max-self.min)
  31         self.bar = r
  32         pguglobals.app.theme.render(s,self.style.bar,r)
  33
  34     def __setattr__(self,k,v):
  35         if k == 'value':
  36             v = int(v)
  37             v = max(v,self.min)
  38             v = min(v,self.max)
  39         _v = self.__dict__.get(k,NOATTR)
  40         self.__dict__[k]=v
  41         if k == 'value' and _v != NOATTR and _v != v:
  42             self.send(CHANGE)
  43             self.repaint()