ChartDirector 6.0 (Ruby Edition)
Black Vertical Bar Meters
Source Code Listing
require("chartdirector") class BlackvbarmeterController < ApplicationController def index() @title = "Black Vertical 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 = 66.77 # Create a LinearMeter object of size 70 x 260 pixels with black background and rounded # corners m = ChartDirector::LinearMeter.new(70, 260, 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 (36, 30), with size of 20 x 196 pixels. The scale # labels are located on the left (default - implies vertical meter). m.setMeter(36, 30, 20, 196) # Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10) # Add the chart title at the top center title = m.addText(m.getWidth() / 2, 5, "Temp C", "arialbd.ttf", 8, ChartDirector::TextColor, ChartDirector::TopCenter) # Move the scale labels 8 pixels from the meter scale to make room for the color scale m.setLabelPos(false, 8) # Demostrate different types of color scales smoothColorScale = [0, 0x0000ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xdddd00, 100, 0xff0000] stepColorScale = [0, 0x00dd00, 50, 0xffff00, 80, 0xff0000, 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::Left), 4) # Add a 4-pixel thick smooth color scale at x = 29 (left of meter scale) m.addColorScale(smoothColorScale, 29, 4) elsif chartIndex == 1 # Add a yellow (0xCC9922) bar from 0 to value with bar lighting effect m.addBar(0, value, 0xcc9922, ChartDirector::barLighting()) # Add a 4-pixel thick smooth color scale at x = 29 (left of meter scale) m.addColorScale(smoothColorScale, 29, 4) # Set the title style to black text on a yellow (0xcc9922) background with rounded # corners title.setFontColor(0x000000) title.setBackground(0xcc9922) title.setRoundedCorners(2) elsif chartIndex == 2 # Add a grey (0xaaaaaa) bar from 0 to value with bar lighting effect m.addBar(0, value, 0xaaaaaa, ChartDirector::barLighting()) # Add a 4-pixel high/low color scale at x = 29 (left of meter scale) m.addColorScale(highLowColorScale, 29, 4) elsif chartIndex == 3 # Add a brown (0xbb6622) bar from 0 to value with cylinder lighting effect m.addBar(0, value, 0xbb6622, ChartDirector::cylinderEffect()) # Add a 4 pixel thick brown (0xbb6622) frame m.setThickFrame(4, 0xbb6622) # Add a high only color scale at x = 29 (left of meter scale) m.addColorScale(highColorScale, 29, 4) elsif chartIndex == 4 # Add a purple (0x7755ee) bar from 0 to value m.addBar(0, value, 0x7755ee) # Add a 4 pixel thick purple (0x880088) frame m.setThickFrame(4, 0x880088) # Add a 4-pixel high/low color scale at x = 29 (left of meter scale) m.addColorScale(highLowColorScale, 29, 4) else # Add a green (0x00bb00) bar from 0 to value with soft lighting effect and 4 pixel # rounded corners m.addBar(0, value, 0x00bb00, ChartDirector::softLighting(), 4) # Add a 4-pixel step color scale at x = 29 (left of meter scale) m.addColorScale(stepColorScale, 29, 4) end # Add a text box at the bottom-center. Display the value using white (0xffffff) 8pt Arial # Bold font on a black (0x000000) background with depressed grey (0x333333) rounded border. t = m.addText(m.getWidth() / 2, m.getHeight() - 7, m.formatValue(value, "2"), "arialbd.ttf", 8, 0xffffff, ChartDirector::BottomCenter) 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 = 66.77 # Create a LinearMeter object of size 70 x 260 pixels with black background and rounded corners m = ChartDirector::LinearMeter.new(70, 260, 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 (36, 30), with size of 20 x 196 pixels. The scale # labels are located on the left (default - implies vertical meter). m.setMeter(36, 30, 20, 196) # Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10) # Add the chart title at the top center title = m.addText(m.getWidth() / 2, 5, "Temp C", "arialbd.ttf", 8, ChartDirector::TextColor, ChartDirector::TopCenter) # Move the scale labels 8 pixels from the meter scale to make room for the color scale m.setLabelPos(false, 8) # Demostrate different types of color scales smoothColorScale = [0, 0x0000ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xdddd00, 100, 0xff0000] stepColorScale = [0, 0x00dd00, 50, 0xffff00, 80, 0xff0000, 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::Left), 4) # Add a 4-pixel thick smooth color scale at x = 29 (left of meter scale) m.addColorScale(smoothColorScale, 29, 4) elsif chartIndex == 1 # Add a yellow (0xCC9922) bar from 0 to value with bar lighting effect m.addBar(0, value, 0xcc9922, ChartDirector::barLighting()) # Add a 4-pixel thick smooth color scale at x = 29 (left of meter scale) m.addColorScale(smoothColorScale, 29, 4) # Set the title style to black text on a yellow (0xcc9922) background with rounded corners title.setFontColor(0x000000) title.setBackground(0xcc9922) title.setRoundedCorners(2) elsif chartIndex == 2 # Add a grey (0xaaaaaa) bar from 0 to value with bar lighting effect m.addBar(0, value, 0xaaaaaa, ChartDirector::barLighting()) # Add a 4-pixel high/low color scale at x = 29 (left of meter scale) m.addColorScale(highLowColorScale, 29, 4) elsif chartIndex == 3 # Add a brown (0xbb6622) bar from 0 to value with cylinder lighting effect m.addBar(0, value, 0xbb6622, ChartDirector::cylinderEffect()) # Add a 4 pixel thick brown (0xbb6622) frame m.setThickFrame(4, 0xbb6622) # Add a high only color scale at x = 29 (left of meter scale) m.addColorScale(highColorScale, 29, 4) elsif chartIndex == 4 # Add a purple (0x7755ee) bar from 0 to value m.addBar(0, value, 0x7755ee) # Add a 4 pixel thick purple (0x880088) frame m.setThickFrame(4, 0x880088) # Add a 4-pixel high/low color scale at x = 29 (left of meter scale) m.addColorScale(highLowColorScale, 29, 4) else # Add a green (0x00bb00) bar from 0 to value with soft lighting effect and 4 pixel rounded # corners m.addBar(0, value, 0x00bb00, ChartDirector::softLighting(), 4) # Add a 4-pixel step color scale at x = 29 (left of meter scale) m.addColorScale(stepColorScale, 29, 4) end # Add a text box at the bottom-center. Display the value using white (0xffffff) 8pt Arial Bold # font on a black (0x000000) background with depressed grey (0x333333) rounded border. t = m.addText(m.getWidth() / 2, m.getHeight() - 7, m.formatValue(value, "2"), "arialbd.ttf", 8, 0xffffff, ChartDirector::BottomCenter) t.setBackground(0x000000, 0x333333, -1) t.setRoundedCorners(3) # Output the chart m.makeChart("blackvbarmeter%s.png" % chartIndex) end createChart(0) createChart(1) createChart(2) createChart(3) createChart(4) createChart(5) |