Black Horizontal Linear Meters

pythondemo\blackhlinearmeter.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 *

def createChart(chartIndex) :

    # The value to display on the meter
    value = 75.35

    # Create a LinearMeter object of size 250 x 75 pixels with black background and rounded corners
    m = LinearMeter(250, 75, 0x000000)
    m.setRoundedFrame(Transparent)

    # Set the default text and line colors to white (0xffffff)
    m.setColor(TextColor, 0xffffff)
    m.setColor(LineColor, 0xffffff)

    # Set the scale region top-left corner at (14, 23), with size of 218 x 20 pixels. The scale
    # labels are located on the top (implies horizontal meter)
    m.setMeter(14, 23, 218, 20, Top)

    # Set meter scale from 0 - 100, with a tick every 10 units
    m.setScale(0, 100, 10)

    # The tick line width to 1 pixel
    m.setLineWidth(0, 1)

    # Demostrate different types of color scales and putting them at different positions
    smoothColorScale = [0, 0x0000ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xdddd00, 100, 0xff0000]
    stepColorScale = [0, 0x00cc00, 50, 0xeecc00, 80, 0xdd0000, 100]
    highLowColorScale = [0, 0x0000ff, 70, Transparent, 100, 0xff0000]

    if chartIndex == 0 :
        # Add the smooth color scale at the default position
        m.addColorScale(smoothColorScale)
    elif chartIndex == 1 :
        # Add the smooth color scale starting at y = 23 (top of scale) with zero width and ending at
        # y = 23 with 20 pixels width
        m.addColorScale(smoothColorScale, 23, 0, 23, 20)
    elif chartIndex == 2 :
        # Add the high low scale at the default position
        m.addColorScale(highLowColorScale)
    elif chartIndex == 3 :
        # Add the smooth color scale starting at y = 33 (center of scale) with zero width and ending
        # at y = 23 with 20 pixels width
        m.addColorScale(smoothColorScale, 33, 0, 23, 20)
    elif chartIndex == 4 :
        # Add the step color scale at the default position
        m.addColorScale(stepColorScale)
    else :
        # Add the smooth color scale starting at y = 43 (bottom of scale) with zero width and ending
        # at y = 23 with 20 pixels width
        m.addColorScale(smoothColorScale, 43, 0, 23, 20)

    # Add a blue (0x0000cc) pointer with white (0xffffff) border at the specified value
    m.addPointer(value, 0x0000cc, 0xffffff)

    # Add a label left aligned to (10, 61) using 8pt Arial Bold font
    m.addText(10, 61, "Temperature C", "Arial Bold", 8, TextColor, Left)

    # Add a text box right aligned to (235, 61). Display the value using white (0xffffff) 8pt Arial
    # Bold font on a black (0x000000) background with depressed grey (0x444444) rounded border.
    t = m.addText(235, 61, m.formatValue(value, "2"), "Arial Bold", 8, 0xffffff, Right)
    t.setBackground(0x000000, 0x444444, -1)
    t.setRoundedCorners(3)

    # Output the chart
    m.makeChart("blackhlinearmeter%s.png" % chartIndex)


createChart(0)
createChart(1)
createChart(2)
createChart(3)
createChart(4)
createChart(5)