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from const import *
import widget
import app
class ProgressBar(widget.Widget):
"""A progress bar.
<pre>ProgressBar(value,min,max)</pre>
<dl>
<dt>value<dd>starting value
<dt>min<dd>minimum value rendered on the screen (usually 0)
<dt>max<dd>maximum value
</dl>
<strong>Example</strong>
<code>
w = gui.ProgressBar(0,0,100)
w.value = 25
</code>
"""
def __init__(self,value,min,max,**params):
params.setdefault('cls','progressbar')
widget.Widget.__init__(self,**params)
self.min,self.max,self.value = min,max,value
def paint(self,s):
r = pygame.rect.Rect(0,0,self.rect.w,self.rect.h)
r.w = r.w*(self.value-self.min)/(self.max-self.min)
self.bar = r
app.App.app.theme.render(s,self.style.bar,r)
def __setattr__(self,k,v):
if k == 'value':
v = int(v)
v = max(v,self.min)
v = min(v,self.max)
_v = self.__dict__.get(k,NOATTR)
self.__dict__[k]=v
if k == 'value' and _v != NOATTR and _v != v:
self.send(CHANGE)
self.repaint()
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