ChartDirector 6.0 (Ruby Edition)
Black Horizontal Bar Meters
Source Code Listing
require("chartdirector") class BlackhbarmeterController < ApplicationController def index() @title = "Black Horizontal Bar Meters" @ctrl_file = File.expand_path(__FILE__) @noOfCharts = 6 render :template => "templates/chartview" end # # Render and deliver the chart # def getchart() # This script can draw different charts depending on the chartIndex chartIndex = (params["img"]).to_i # The value to display on the meter value = 75.35 # Create a LinearMeter object of size 260 x 80 pixels with black background and rounded # corners m = ChartDirector::LinearMeter.new(260, 80, 0x000000) m.setRoundedFrame(ChartDirector::Transparent) # Set the default text and line colors to white (0xffffff) m.setColor(ChartDirector::TextColor, 0xffffff) m.setColor(ChartDirector::LineColor, 0xffffff) # Set the scale region top-left corner at (15, 24), with size of 228 x 20 pixels. The scale # labels are located on the top (implies horizontal meter) m.setMeter(15, 24, 228, 20, ChartDirector::Top) # Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10) # Demostrate different types of color scales smoothColorScale = [0, 0x0000ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xdddd00, 100, 0xff0000] stepColorScale = [0, 0x00dd00, 50, 0xffff00, 80, 0xff3333, 100] highLowColorScale = [0, 0x0000ff, 40, ChartDirector::Transparent, 60, ChartDirector::Transparent, 100, 0xff0000] highColorScale = [70, ChartDirector::Transparent, 100, 0xff0000] if chartIndex == 0 # Add a blue (0x0088ff) bar from 0 to value with glass effect and 4 pixel rounded # corners m.addBar(0, value, 0x0088ff, ChartDirector::glassEffect(ChartDirector::NormalGlare, ChartDirector::Top), 4) # Add a 5-pixel thick smooth color scale at y = 48 (below the meter scale) m.addColorScale(smoothColorScale, 48, 5) elsif chartIndex == 1 # Add a purple (0xaa66ff) bar from 0 to value m.addBar(0, value, 0xaa66ff) # Add a 4 pixel thick purple (0x880088) frame m.setThickFrame(4, 0x880088) # Add a 5-pixel thick high/low color scale at y = 48 (below the meter scale) m.addColorScale(highLowColorScale, 48, 5) elsif chartIndex == 2 # Add a green (0x00ee00) bar from 0 to value with right side soft lighting effect and 4 # pixel rounded corners m.addBar(0, value, 0x00ee00, ChartDirector::softLighting(ChartDirector::Right), 4) # Add a 5-pixel thick step color scale at y = 48 (below the meter scale) m.addColorScale(stepColorScale, 48, 5) elsif chartIndex == 3 # Add an orange (0xff8800) bar from 0 to value with cylinder lighting effect m.addBar(0, value, 0xff8800, ChartDirector::cylinderEffect()) # Add a 4 pixel thick brown (0xbb5500) frame m.setThickFrame(4, 0xbb5500) # Add a 5-pixel thick high only color scale at y = 48 (below the meter scale) m.addColorScale(highColorScale, 48, 5) elsif chartIndex == 4 # Add a magneta (0xdd00dd) bar from 0 to value with top side soft lighting effect and 4 # pixel rounded corners m.addBar(0, value, 0xdd00dd, ChartDirector::softLighting(ChartDirector::Top), 4) # Add a 5-pixel thick smooth color scale at y = 48 (below the meter scale) m.addColorScale(smoothColorScale, 48, 5) else # Add a red (0xff0000) bar from 0 to value with bar lighting effect m.addBar(0, value, 0xff0000, ChartDirector::barLighting()) # Add a 4 pixel thick red (0xaa0000) frame m.setThickFrame(4, 0xaa0000) # Add a 5-pixel thick high/low color scale at y = 48 (below the meter scale) m.addColorScale(highLowColorScale, 48, 5) end # Add a label left aligned to (12, 65) using 8pt Arial Bold font m.addText(12, 65, "Temperature C", "arialbd.ttf", 8, ChartDirector::TextColor, ChartDirector::Left) # Add a text box right aligned to (243, 65). Display the value using white (0xffffff) 8pt # Arial Bold font on a black (0x000000) background with depressed dark grey (0x333333) # rounded border. t = m.addText(243, 65, m.formatValue(value, "2"), "arial.ttf", 8, 0xffffff, ChartDirector::Right) t.setBackground(0x000000, 0x333333, -1) t.setRoundedCorners(3) # Output the chart send_data(m.makeChart2(ChartDirector::PNG), :type => "image/png", :disposition => "inline") end end |
<html> <body style="margin:5px 0px 0px 5px"> <!-- Title --> <div style="font-size:18pt; font-family:verdana; font-weight:bold"> <%= @title %> </div> <hr style="border:solid 1px #000080" /> <!-- Source Code Listing Link --> <div style="font-size:9pt; font-family:verdana; margin-bottom:1.5em"> <%= link_to "Source Code Listing", :controller => "cddemo", :action => "viewsource", :ctrl_file => @ctrl_file, :view_file => File.expand_path(__FILE__) %> </div> <!-- Create one or more IMG tags to display the demo chart(s) --> <% 0.upto(@noOfCharts - 1) do |i| %> <img src="<%= url_for(:action => "getchart", :img => i) %>"> <% end %> </body> </html> |
#!/usr/bin/env ruby require("chartdirector") def createChart(chartIndex) # The value to display on the meter value = 75.35 # Create a LinearMeter object of size 260 x 80 pixels with black background and rounded corners m = ChartDirector::LinearMeter.new(260, 80, 0x000000) m.setRoundedFrame(ChartDirector::Transparent) # Set the default text and line colors to white (0xffffff) m.setColor(ChartDirector::TextColor, 0xffffff) m.setColor(ChartDirector::LineColor, 0xffffff) # Set the scale region top-left corner at (15, 24), with size of 228 x 20 pixels. The scale # labels are located on the top (implies horizontal meter) m.setMeter(15, 24, 228, 20, ChartDirector::Top) # Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10) # Demostrate different types of color scales smoothColorScale = [0, 0x0000ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xdddd00, 100, 0xff0000] stepColorScale = [0, 0x00dd00, 50, 0xffff00, 80, 0xff3333, 100] highLowColorScale = [0, 0x0000ff, 40, ChartDirector::Transparent, 60, ChartDirector::Transparent, 100, 0xff0000] highColorScale = [70, ChartDirector::Transparent, 100, 0xff0000] if chartIndex == 0 # Add a blue (0x0088ff) bar from 0 to value with glass effect and 4 pixel rounded corners m.addBar(0, value, 0x0088ff, ChartDirector::glassEffect(ChartDirector::NormalGlare, ChartDirector::Top), 4) # Add a 5-pixel thick smooth color scale at y = 48 (below the meter scale) m.addColorScale(smoothColorScale, 48, 5) elsif chartIndex == 1 # Add a purple (0xaa66ff) bar from 0 to value m.addBar(0, value, 0xaa66ff) # Add a 4 pixel thick purple (0x880088) frame m.setThickFrame(4, 0x880088) # Add a 5-pixel thick high/low color scale at y = 48 (below the meter scale) m.addColorScale(highLowColorScale, 48, 5) elsif chartIndex == 2 # Add a green (0x00ee00) bar from 0 to value with right side soft lighting effect and 4 # pixel rounded corners m.addBar(0, value, 0x00ee00, ChartDirector::softLighting(ChartDirector::Right), 4) # Add a 5-pixel thick step color scale at y = 48 (below the meter scale) m.addColorScale(stepColorScale, 48, 5) elsif chartIndex == 3 # Add an orange (0xff8800) bar from 0 to value with cylinder lighting effect m.addBar(0, value, 0xff8800, ChartDirector::cylinderEffect()) # Add a 4 pixel thick brown (0xbb5500) frame m.setThickFrame(4, 0xbb5500) # Add a 5-pixel thick high only color scale at y = 48 (below the meter scale) m.addColorScale(highColorScale, 48, 5) elsif chartIndex == 4 # Add a magneta (0xdd00dd) bar from 0 to value with top side soft lighting effect and 4 # pixel rounded corners m.addBar(0, value, 0xdd00dd, ChartDirector::softLighting(ChartDirector::Top), 4) # Add a 5-pixel thick smooth color scale at y = 48 (below the meter scale) m.addColorScale(smoothColorScale, 48, 5) else # Add a red (0xff0000) bar from 0 to value with bar lighting effect m.addBar(0, value, 0xff0000, ChartDirector::barLighting()) # Add a 4 pixel thick red (0xaa0000) frame m.setThickFrame(4, 0xaa0000) # Add a 5-pixel thick high/low color scale at y = 48 (below the meter scale) m.addColorScale(highLowColorScale, 48, 5) end # Add a label left aligned to (12, 65) using 8pt Arial Bold font m.addText(12, 65, "Temperature C", "arialbd.ttf", 8, ChartDirector::TextColor, ChartDirector::Left) # Add a text box right aligned to (243, 65). Display the value using white (0xffffff) 8pt Arial # Bold font on a black (0x000000) background with depressed dark grey (0x333333) rounded border. t = m.addText(243, 65, m.formatValue(value, "2"), "arial.ttf", 8, 0xffffff, ChartDirector::Right ) t.setBackground(0x000000, 0x333333, -1) t.setRoundedCorners(3) # Output the chart m.makeChart("blackhbarmeter%s.png" % chartIndex) end createChart(0) createChart(1) createChart(2) createChart(3) createChart(4) createChart(5) |