Adding alt tag Dynamic labels according to actual presence and order of label axes Negative labels - reportable - Fork of reportable required by WarVox, from hdm/reportable.
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       ---
 (DIR) commit 11f18a2208ec2ba6e7983fba47a671290fbf3ac4
 (DIR) parent dd5ce7bf2dd86866f616621ed9798b5d259b37e3
 (HTM) Author: Jan Bromberger <janbromberger@JBMBP2-2.local>
       Date:   Tue, 29 Dec 2009 17:08:18 +0800
       
       Adding alt tag
       Dynamic labels according to actual presence and order of label axes
       Negative labels
       
       Diffstat:
         M lib/simplabs/reports_as_sparkline/… |      12 +++++++++---
       
       1 file changed, 9 insertions(+), 3 deletions(-)
       ---
 (DIR) diff --git a/lib/simplabs/reports_as_sparkline/sparkline_tag_helper.rb b/lib/simplabs/reports_as_sparkline/sparkline_tag_helper.rb
       @@ -17,18 +17,24 @@ module Simplabs #:nodoc:
              # * <tt>line_color</tt> - The line color of the sparkline (hex code)
              # * <tt>fill_color</tt> - The color to fill the area below the sparkline with (hex code)
              # * <tt>labels</tt> - The axes to render lables for (Array of <tt>:x</tt>, <tt>:y+</tt>, <tt>:r</tt>, <tt>:t</tt>; this is x axis, y axis, right, top)
       +      # * <tt>alt</tt> - The HTML img alt tag
              #
              # ==== Example
              # <tt><%= sparkline_tag(User.registrations_report, :width => 200, :height => 100, :color => '000') %></tt>
              def sparkline_tag(data, options = {})
       -        options.reverse_merge!({ :width => 300, :height => 34, :line_color => '0077cc', :fill_color => 'e6f2fa', :labels => [] })
       +        options.reverse_merge!({ :width => 300, :height => 34, :line_color => '0077cc', :fill_color => 'e6f2fa', :labels => [], :alt => '' })
                data = data.collect { |d| d[1] }
                labels = ""
                unless options[:labels].empty?
       -          labels = "&chxt=#{options[:labels].map(&:to_s).join(',')}&chxr=0,0,#{data.length}|1,0,#{data.max}|2,0,#{data.max}|3,0,#{data.length}"
       +          chxr = {}
       +          options[:labels].each_with_index do |l, i|
       +            chxr[l] = "#{i}," + ([:x, :t].include?(l) ? "0,#{data.length}" : "#{[data.min, 0].min},#{data.max}")
       +          end
       +          labels = "&chxt=#{options[:labels].map(&:to_s).join(',')}&chxr=#{options[:labels].collect{|l| chxr[l]}.join('|')}"
                end
                image_tag(
       -          "http://chart.apis.google.com/chart?cht=ls&chs=#{options[:width]}x#{options[:height]}&chd=t:#{data.join(',')}&chco=#{options[:line_color]}&chm=B,#{options[:fill_color]},0,0,0&chls=1,0,0&chds=#{data.min},#{data.max}#{labels}"
       +          "http://chart.apis.google.com/chart?cht=ls&chs=#{options[:width]}x#{options[:height]}&chd=t:#{data.join(',')}&chco=#{options[:line_color]}&chm=B,#{options[:fill_color]},0,0,0&chls=1,0,0&chds=#{data.min},#{data.max}#{labels}",
       +          :alt => options[:alt]
                )
              end