



This example demonstrates horizontal bar meters in a white coloring scheme.
ChartDirector 6.0 (Python Edition)
White Horizontal Linear Meters
Source Code Listing
#!/usr/bin/python from pychartdir import * def createChart(chartIndex) : # The value to display on the meter value = 74.25 # 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(250, 75, 0xeeeeee, 0xcccccc) m.setRoundedFrame(Transparent) m.setThickFrame(3) # 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) # 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 high low scale at the default position m.addColorScale(highLowColorScale) elif chartIndex == 2 : # 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) else : # Add the step color scale at the default position m.addColorScale(stepColorScale) # Add a blue (0x0000cc) pointer at the specified value m.addPointer(value, 0x0000cc) # Add a label left aligned to (10, 61) using 8pt Arial Bold font m.addText(10, 61, "Temperature C", "arialbd.ttf", 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 rounded border. t = m.addText(235, 61, m.formatValue(value, "2"), "arialbd.ttf", 8, 0xffffff, Right) t.setBackground(0x000000, 0x000000, -1) t.setRoundedCorners(3) # Output the chart m.makeChart("whitehlinearmeter%s.png" % chartIndex) createChart(0) createChart(1) createChart(2) createChart(3) |
#!/usr/bin/python from pychartdir import * import cgi, sys # Get HTTP query parameters query = cgi.FieldStorage() # This script can draw different charts depending on the chartIndex chartIndex = int(query["img"].value) # The value to display on the meter value = 74.25 # 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(250, 75, 0xeeeeee, 0xcccccc) m.setRoundedFrame(Transparent) m.setThickFrame(3) # 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) # 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 high low scale at the default position m.addColorScale(highLowColorScale) elif chartIndex == 2 : # 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) else : # Add the step color scale at the default position m.addColorScale(stepColorScale) # Add a blue (0x0000cc) pointer at the specified value m.addPointer(value, 0x0000cc) # Add a label left aligned to (10, 61) using 8pt Arial Bold font m.addText(10, 61, "Temperature C", "arialbd.ttf", 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 rounded border. t = m.addText(235, 61, m.formatValue(value, "2"), "arialbd.ttf", 8, 0xffffff, Right) t.setBackground(0x000000, 0x000000, -1) t.setRoundedCorners(3) # Output the chart print("Content-type: image/png\n") binaryPrint(m.makeChart2(PNG)) |