#!/usr/bin/python
from pychartdir import *
import cgi, os
# Get HTTP query parameters
query = cgi.FieldStorage()
# The value to display on the meter
value = 6.5
# Create an AugularMeter object of size 200 x 100 pixels with rounded corners
m = AngularMeter(200, 100)
m.setRoundedFrame()
# Set meter background according to a parameter
if query["img"].value == "0" :
# Use gold background color
m.setBackground(goldColor(), 0x000000, -2)
elif query["img"].value == "1" :
# Use silver background color
m.setBackground(silverColor(), 0x000000, -2)
elif query["img"].value == "2" :
# Use metallic blue (9898E0) background color
m.setBackground(metalColor(0x9898e0), 0x000000, -2)
elif query["img"].value == "3" :
# Use a wood pattern as background color
m.setBackground(m.patternColor2(os.path.join(os.path.dirname(sys.argv[0]),
"wood.png")), 0x000000, -2)
elif query["img"].value == "4" :
# Use a marble pattern as background color
m.setBackground(m.patternColor2(os.path.join(os.path.dirname(sys.argv[0]),
"marble.png")), 0x000000, -2)
else :
# Use a solid light purple (EEBBEE) background color
m.setBackground(0xeebbee, 0x000000, -2)
# Set the meter center at (100, 235), with radius 210 pixels, and span from -24 to
# +24 degress
m.setMeter(100, 235, 210, -24, 24)
# Meter scale is 0 - 100, with a tick every 1 unit
m.setScale(0, 10, 1)
# Set 0 - 6 as green (99ff99) zone, 6 - 8 as yellow (ffff00) zone, and 8 - 10 as red
# (ff3333) zone
m.addZone(0, 6, 0x99ff99, 0x808080)
m.addZone(6, 8, 0xffff00, 0x808080)
m.addZone(8, 10, 0xff3333, 0x808080)
# Add a title at the bottom of the meter using 10 pts Arial Bold font
m.addTitle2(Bottom, "OUTPUT POWER LEVEL\n", "arialbd.ttf", 10)
# Add a semi-transparent black (80000000) pointer at the specified value
m.addPointer(value, 0x80000000L)
# output the chart
print "Content-type: image/png\n"
binaryPrint(m.makeChart2(PNG)) |