ChartDirector 7.0 (Python Edition)

White Vertical Linear Meters


          

This example demonstrates vertical bar meters in a white coloring scheme.

Source Code Listing

pythondemo\whitevlinearmeter.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 very light grey (0xeeeeee) backgruond # and a light grey (0xccccccc) 3-pixel thick rounded frame m = LinearMeter(70, 260, 0xeeeeee, 0xcccccc) m.setRoundedFrame(Transparent) m.setThickFrame(3) # Set the scale region top-left corner at (28, 30), with size of 20 x 196 pixels. The scale # labels are located on the left (default - implies vertical meter) m.setMeter(28, 30, 20, 196) # Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10) # Demostrate different types of color scales and putting them at different positions smoothColorScale = [0, 0x6666ff, 25, 0x00bbbb, 50, 0x00ff00, 75, 0xffff00, 100, 0xff0000] stepColorScale = [0, 0x33ff33, 50, 0xffff33, 80, 0xff3333, 100] highLowColorScale = [0, 0x6666ff, 70, Transparent, 100, 0xff0000] if chartIndex == 0 : # Add the smooth color scale at the default position m.addColorScale(smoothColorScale) elif chartIndex == 1 : # Add the step color scale at the default position m.addColorScale(stepColorScale) 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 x = 28 (left of scale) with zero width and ending # at x = 28 with 20 pixels width m.addColorScale(smoothColorScale, 28, 0, 28, 20) elif chartIndex == 4 : # Add the smooth color scale starting at x = 38 (center of scale) with zero width and ending # at x = 28 with 20 pixels width m.addColorScale(smoothColorScale, 38, 0, 28, 20) else : # Add the smooth color scale starting at x = 48 (right of scale) with zero width and ending # at x = 28 with 20 pixels width m.addColorScale(smoothColorScale, 48, 0, 28, 20) # In this demo, we demostrate pointers of different shapes if chartIndex < 3 : # Add a blue (0x0000cc) pointer of default shape at the specified value m.addPointer(value, 0x0000cc) else : # Add a blue (0x0000cc) pointer of triangular shape the specified value m.addPointer(value, 0x0000cc).setShape(TriangularPointer, 0.7, 0.5) # Add a title using 8pt Arial Bold font with a border color background m.addTitle("Temp C", "Arial Bold", 8, TextColor).setBackground(0xcccccc) # Add a text box at the bottom-center. Display the value using white (0xffffff) 8pt Arial Bold # font on a black (0x000000) background with rounded border. t = m.addText(m.getWidth() / 2, m.getHeight() - 8, m.formatValue(value, "2"), "Arial Bold", 8, 0xffffff, Bottom) t.setBackground(0x000000) t.setRoundedCorners(3) t.setMargin2(5, 5, 2, 1) # Output the chart m.makeChart("whitevlinearmeter%s.png" % chartIndex) createChart(0) createChart(1) createChart(2) createChart(3) createChart(4) createChart(5)