import sys
class progressBar:
def __init__(self, minValue = 0, maxValue = 100, totalWidth=75):
""" Initializes the progress bar. """
self.progBar = "" # This holds the progress bar string
self.oldprogBar = ""
self.min = minValue
self.max = maxValue
self.span = maxValue - minValue
self.width = totalWidth
self.amount = 0 # When amount == max, we are 100% done
self.updateAmount(0) # Build progress bar string
def appendAmount(self, append):
""" Increases the current amount of the value of append and
updates the progress bar to new ammount. """
self.updateAmount(self.amount + append)
def updatePercentage(self, newPercentage):
""" Updates the progress bar to the new percentage. """
self.updateAmount((newPercentage * float(self.max)) / 100.0)
def updateAmount(self, newAmount = 0):
""" Update the progress bar with the new amount (with min and max
values set at initialization; if it is over or under, it takes the
min or max value as a default. """
if newAmount < self.min: newAmount = self.min
if newAmount > self.max: newAmount = self.max
self.amount = newAmount
# Figure out the new percent done, round to an integer
diffFromMin = float(self.amount - self.min)
percentDone = (diffFromMin / float(self.span)) * 100.0
percentDone = int(round(percentDone))
# Figure out how many hash bars the percentage should be
allFull = self.width - 2
numHashes = (percentDone / 100.0) * allFull
numHashes = int(round(numHashes))
# Build a progress bar with an arrow of equal signs; special cases for
# empty and full
if numHashes == 0:
self.progBar = "[>%s]" % (' '*(allFull-1))
elif numHashes == allFull:
self.progBar = "[%s]" % ('='*allFull)
else:
self.progBar = "[%s>%s]" % ('='*(numHashes-1), ' '*(allFull-numHashes))
# figure out where to put the percentage, roughly centered
percentPlace = (len(self.progBar) / 2) - len(str(percentDone))
percentString = str(percentDone) + "%"
# slice the percentage into the bar
self.progBar = ' '.join([self.progBar, percentString])
def draw(self):
""" Draws the progress bar if it has changed from it's previous value. """
if self.progBar != self.oldprogBar:
self.oldprogBar = self.progBar
sys.stdout.write(self.progBar + '\r')
sys.stdout.flush() # force updating of screen
def __str__(self):
""" Returns the current progress bar. """
return str(self.progBar)
Diff to Previous Revision
--- revision 4 2012-07-28 21:33:38
+++ revision 5 2012-08-09 17:39:10
@@ -1,7 +1,7 @@
import sys
class progressBar:
- def __init__(self, minValue = 0, maxValue = 100, totalWidth=77):
+ def __init__(self, minValue = 0, maxValue = 100, totalWidth=75):
""" Initializes the progress bar. """
self.progBar = "" # This holds the progress bar string
self.oldprogBar = ""
@@ -12,10 +12,14 @@
self.amount = 0 # When amount == max, we are 100% done
self.updateAmount(0) # Build progress bar string
- def appendAmount(self, append = 0):
- """ Increases the current amount of the value of append and calls
- updateAmount. """
+ def appendAmount(self, append):
+ """ Increases the current amount of the value of append and
+ updates the progress bar to new ammount. """
self.updateAmount(self.amount + append)
+
+ def updatePercentage(self, newPercentage):
+ """ Updates the progress bar to the new percentage. """
+ self.updateAmount((newPercentage * float(self.max)) / 100.0)
def updateAmount(self, newAmount = 0):
""" Update the progress bar with the new amount (with min and max
