Linear Zone Meter

pythondemo\linearzonemeter.py
#!/usr/bin/python

# The ChartDirector for Python module is assumed to be in "../lib"
import sys, os
sys.path.insert(0, os.path.join(os.path.abspath(sys.path[0]), "..", "lib"))

from pychartdir import *

# The value to display on the meter
value = 85

# Create an LinearMeter object of size 210 x 45 pixels, using silver background with a 2 pixel black
# 3D depressed border.
m = LinearMeter(210, 45, silverColor(), 0, -2)

# Set the scale region top-left corner at (5, 5), with size of 200 x 20 pixels. The scale labels are
# located on the bottom (implies horizontal meter)
m.setMeter(5, 5, 200, 20, Bottom)

# Set meter scale from 0 - 100
m.setScale(0, 100)

# Add a title at the bottom of the meter with a 1 pixel raised 3D border
m.addTitle2(Bottom, "Battery Level", "Arial Bold", 8).setBackground(Transparent, -1, 1)

# Set 3 zones of different colors to represent Good/Weak/Bad data ranges
m.addZone(50, 100, 0x99ff99, "Good")
m.addZone(20, 50, 0xffff66, "Weak")
m.addZone(0, 20, 0xffcccc, "Bad")

# Add empty labels (just need the ticks) at 0/20/50/80 as separators for zones
m.addLabel(0, " ")
m.addLabel(20, " ")
m.addLabel(50, " ")
m.addLabel(100, " ")

# Add a semi-transparent blue (800000ff) pointer at the specified value, using triangular pointer
# shape
m.addPointer(value, 0x800000ff).setShape(TriangularPointer)

# Output the chart
m.makeChart("linearzonemeter.png")