comparison lib/redmine/helpers/gantt.rb @ 1115:433d4f72a19b redmine-2.2

Update to Redmine SVN revision 11137 on 2.2-stable branch

 # Redmine - project management software
-# Copyright (C) 2006-2011  Jean-Philippe Lang
+# Copyright (C) 2006-2012  Jean-Philippe Lang
 #
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License
 # as published by the Free Software Foundation; either version 2
 # of the License, or (at your option) any later version.

   module Helpers
     # Simple class to handle gantt chart data
     class Gantt
       include ERB::Util
       include Redmine::I18n
+      include Redmine::Utils::DateCalculation
 
       # :nodoc:
       # Some utility methods for the PDF export
       class PDF
         MaxCharactorsForSubject = 45

       attr_accessor :project
       attr_accessor :view
 
       def initialize(options={})
         options = options.dup
-
         if options[:year] && options[:year].to_i >0
           @year_from = options[:year].to_i
           if options[:month] && options[:month].to_i >=1 && options[:month].to_i <= 12
             @month_from = options[:month].to_i
           else

           end
         else
           @month_from ||= Date.today.month
           @year_from ||= Date.today.year
         end
-
         zoom = (options[:zoom] || User.current.pref[:gantt_zoom]).to_i
         @zoom = (zoom > 0 && zoom < 5) ? zoom : 2
         months = (options[:months] || User.current.pref[:gantt_months]).to_i
         @months = (months > 0 && months < 25) ? months : 6
-
         # Save gantt parameters as user preference (zoom and months count)
-        if (User.current.logged? && (@zoom != User.current.pref[:gantt_zoom] || @months != User.current.pref[:gantt_months]))
+        if (User.current.logged? && (@zoom != User.current.pref[:gantt_zoom] ||
+              @months != User.current.pref[:gantt_months]))
           User.current.pref[:gantt_zoom], User.current.pref[:gantt_months] = @zoom, @months
           User.current.preference.save
         end
-
         @date_from = Date.civil(@year_from, @month_from, 1)
         @date_to = (@date_from >> @months) - 1
-
         @subjects = ''
         @lines = ''
         @number_of_rows = nil
-
         @issue_ancestors = []
-
         @truncated = false
         if options.has_key?(:max_rows)
           @max_rows = options[:max_rows]
         else
           @max_rows = Setting.gantt_items_limit.blank? ? nil : Setting.gantt_items_limit.to_i

       def common_params
         { :controller => 'gantts', :action => 'show', :project_id => @project }
       end
 
       def params
-        common_params.merge({  :zoom => zoom, :year => year_from, :month => month_from, :months => months })
+        common_params.merge({:zoom => zoom, :year => year_from,
+                             :month => month_from, :months => months})
       end
 
       def params_previous
-        common_params.merge({:year => (date_from << months).year, :month => (date_from << months).month, :zoom => zoom, :months => months })
+        common_params.merge({:year => (date_from << months).year,
+                             :month => (date_from << months).month,
+                             :zoom => zoom, :months => months})
       end
 
       def params_next
-        common_params.merge({:year => (date_from >> months).year, :month => (date_from >> months).month, :zoom => zoom, :months => months })
+        common_params.merge({:year => (date_from >> months).year,
+                             :month => (date_from >> months).month,
+                             :zoom => zoom, :months => months})
       end
 
       # Returns the number of rows that will be rendered on the Gantt chart
       def number_of_rows
         return @number_of_rows if @number_of_rows
-
         rows = projects.inject(0) {|total, p| total += number_of_rows_on_project(p)}
         rows > @max_rows ? @max_rows : rows
       end
 
       # Returns the number of rows that will be used to list a project on
       # the Gantt chart.  This will recurse for each subproject.
       def number_of_rows_on_project(project)
         return 0 unless projects.include?(project)
-
         count = 1
         count += project_issues(project).size
         count += project_versions(project).size
         count
       end

       end
 
       # Return all the project nodes that will be displayed
       def projects
         return @projects if @projects
-
         ids = issues.collect(&:project).uniq.collect(&:id)
         if ids.any?
           # All issues projects and their visible ancestors
           @projects = Project.visible.all(
             :joins => "LEFT JOIN #{Project.table_name} child ON #{Project.table_name}.lft <= child.lft AND #{Project.table_name}.rgt >= child.rgt",

       def version_issues(project, version)
         project_issues(project).select {|issue| issue.fixed_version == version}
       end
 
       def render(options={})
-        options = {:top => 0, :top_increment => 20, :indent_increment => 20, :render => :subject, :format => :html}.merge(options)
+        options = {:top => 0, :top_increment => 20,
+                   :indent_increment => 20, :render => :subject,
+                   :format => :html}.merge(options)
         indent = options[:indent] || 4
-
         @subjects = '' unless options[:only] == :lines
         @lines = '' unless options[:only] == :subjects
         @number_of_rows = 0
-
         Project.project_tree(projects) do |project, level|
           options[:indent] = indent + level * options[:indent_increment]
           render_project(project, options)
           break if abort?
         end
-
         @subjects_rendered = true unless options[:only] == :lines
         @lines_rendered = true unless options[:only] == :subjects
-
         render_end(options)
       end
 
       def render_project(project, options={})
         subject_for_project(project, options) unless options[:only] == :lines
         line_for_project(project, options) unless options[:only] == :subjects
-
         options[:top] += options[:top_increment]
         options[:indent] += options[:indent_increment]
         @number_of_rows += 1
         return if abort?
-
         issues = project_issues(project).select {|i| i.fixed_version.nil?}
         sort_issues!(issues)
         if issues
           render_issues(issues, options)
           return if abort?
         end
-
         versions = project_versions(project)
         versions.each do |version|
           render_version(project, version, options)
         end
-
         # Remove indent to hit the next sibling
         options[:indent] -= options[:indent_increment]
       end
 
       def render_issues(issues, options={})
         @issue_ancestors = []
-
         issues.each do |i|
           subject_for_issue(i, options) unless options[:only] == :lines
           line_for_issue(i, options) unless options[:only] == :subjects
-
           options[:top] += options[:top_increment]
           @number_of_rows += 1
           break if abort?
         end
-
         options[:indent] -= (options[:indent_increment] * @issue_ancestors.size)
       end
 
       def render_version(project, version, options={})
         # Version header
         subject_for_version(version, options) unless options[:only] == :lines
         line_for_version(version, options) unless options[:only] == :subjects
-
         options[:top] += options[:top_increment]
         @number_of_rows += 1
         return if abort?
-
         issues = version_issues(project, version)
         if issues
           sort_issues!(issues)
           # Indent issues
           options[:indent] += options[:indent_increment]

       end
 
       def subject_for_project(project, options)
         case options[:format]
         when :html
-          subject = "<span class='icon icon-projects #{project.overdue? ? 'project-overdue' : ''}'>".html_safe
-          subject << view.link_to_project(project).html_safe
-          subject << '</span>'.html_safe
+          html_class = ""
+          html_class << 'icon icon-projects '
+          html_class << (project.overdue? ? 'project-overdue' : '')
+          s = view.link_to_project(project).html_safe
+          subject = view.content_tag(:span, s,
+                                     :class => html_class).html_safe
           html_subject(options, subject, :css => "project-name")
         when :image
           image_subject(options, project.name)
         when :pdf
           pdf_new_page?(options)

       def line_for_project(project, options)
         # Skip versions that don't have a start_date or due date
         if project.is_a?(Project) && project.start_date && project.due_date
           options[:zoom] ||= 1
           options[:g_width] ||= (self.date_to - self.date_from + 1) * options[:zoom]
-
           coords = coordinates(project.start_date, project.due_date, nil, options[:zoom])
           label = h(project)
-
           case options[:format]
           when :html
             html_task(options, coords, :css => "project task", :label => label, :markers => true)
           when :image
             image_task(options, coords, :label => label, :markers => true, :height => 3)

       end
 
       def subject_for_version(version, options)
         case options[:format]
         when :html
-          subject = "<span class='icon icon-package #{version.behind_schedule? ? 'version-behind-schedule' : ''} #{version.overdue? ? 'version-overdue' : ''}'>".html_safe
-          subject << view.link_to_version(version).html_safe
-          subject << '</span>'.html_safe
+          html_class = ""
+          html_class << 'icon icon-package '
+          html_class << (version.behind_schedule? ? 'version-behind-schedule' : '') << " "
+          html_class << (version.overdue? ? 'version-overdue' : '')
+          s = view.link_to_version(version).html_safe
+          subject = view.content_tag(:span, s,
+                                     :class => html_class).html_safe
           html_subject(options, subject, :css => "version-name")
         when :image
           image_subject(options, version.to_s_with_project)
         when :pdf
           pdf_new_page?(options)

       def line_for_version(version, options)
         # Skip versions that don't have a start_date
         if version.is_a?(Version) && version.start_date && version.due_date
           options[:zoom] ||= 1
           options[:g_width] ||= (self.date_to - self.date_from + 1) * options[:zoom]
-
-          coords = coordinates(version.start_date, version.due_date, version.completed_pourcent, options[:zoom])
-          label = "#{h version } #{h version.completed_pourcent.to_i.to_s}%"
+          coords = coordinates(version.start_date,
+                               version.due_date, version.completed_pourcent,
+                               options[:zoom])
+          label = "#{h version} #{h version.completed_pourcent.to_i.to_s}%"
           label = h("#{version.project} -") + label unless @project && @project == version.project
-
           case options[:format]
           when :html
             html_task(options, coords, :css => "version task", :label => label, :markers => true)
           when :image
             image_task(options, coords, :label => label, :markers => true, :height => 3)

       def subject_for_issue(issue, options)
         while @issue_ancestors.any? && !issue.is_descendant_of?(@issue_ancestors.last)
           @issue_ancestors.pop
           options[:indent] -= options[:indent_increment]
         end
-
         output = case options[:format]
         when :html
           css_classes = ''
           css_classes << ' issue-overdue' if issue.overdue?
           css_classes << ' issue-behind-schedule' if issue.behind_schedule?
           css_classes << ' icon icon-issue' unless Setting.gravatar_enabled? && issue.assigned_to
-
-          subject = "<span class='#{css_classes}'>".html_safe
+          s = "".html_safe
           if issue.assigned_to.present?
             assigned_string = l(:field_assigned_to) + ": " + issue.assigned_to.name
-            subject << view.avatar(issue.assigned_to, :class => 'gravatar icon-gravatar', :size => 10, :title => assigned_string).to_s.html_safe
-          end
-          subject << view.link_to_issue(issue).html_safe
-          subject << '</span>'.html_safe
-          html_subject(options, subject, :css => "issue-subject", :title => issue.subject) + "\n"
+            s << view.avatar(issue.assigned_to,
+                             :class => 'gravatar icon-gravatar',
+                             :size => 10,
+                             :title => assigned_string).to_s.html_safe
+          end
+          s << view.link_to_issue(issue).html_safe
+          subject = view.content_tag(:span, s, :class => css_classes).html_safe
+          html_subject(options, subject, :css => "issue-subject",
+                       :title => issue.subject) + "\n"
         when :image
           image_subject(options, issue.subject)
         when :pdf
           pdf_new_page?(options)
           pdf_subject(options, issue.subject)
         end
-
         unless issue.leaf?
           @issue_ancestors << issue
           options[:indent] += options[:indent_increment]
         end
-
         output
       end
 
       def line_for_issue(issue, options)
         # Skip issues that don't have a due_before (due_date or version's due_date)
         if issue.is_a?(Issue) && issue.due_before
           coords = coordinates(issue.start_date, issue.due_before, issue.done_ratio, options[:zoom])
-          label = "#{ issue.status.name } #{ issue.done_ratio }%"
-
+          label = "#{issue.status.name} #{issue.done_ratio}%"
           case options[:format]
           when :html
-            html_task(options, coords, :css => "task " + (issue.leaf? ? 'leaf' : 'parent'), :label => label, :issue => issue, :markers => !issue.leaf?)
+            html_task(options, coords,
+                      :css => "task " + (issue.leaf? ? 'leaf' : 'parent'),
+                      :label => label, :issue => issue,
+                      :markers => !issue.leaf?)
           when :image
             image_task(options, coords, :label => label)
           when :pdf
             pdf_task(options, coords, :label => label)
         end

       end
 
       # Generates a gantt image
       # Only defined if RMagick is avalaible
       def to_image(format='PNG')
-        date_to = (@date_from >> @months)-1
+        date_to = (@date_from >> @months) - 1
         show_weeks = @zoom > 1
         show_days = @zoom > 2
-
         subject_width = 400
         header_height = 18
         # width of one day in pixels
-        zoom = @zoom*2
-        g_width = (@date_to - @date_from + 1)*zoom
+        zoom = @zoom * 2
+        g_width = (@date_to - @date_from + 1) * zoom
         g_height = 20 * number_of_rows + 30
-        headers_height = (show_weeks ? 2*header_height : header_height)
+        headers_height = (show_weeks ? 2 * header_height : header_height)
         height = g_height + headers_height
-
         imgl = Magick::ImageList.new
-        imgl.new_image(subject_width+g_width+1, height)
+        imgl.new_image(subject_width + g_width + 1, height)
         gc = Magick::Draw.new
-
+        gc.font = Redmine::Configuration['rmagick_font_path'] || ""
         # Subjects
         gc.stroke('transparent')
         subjects(:image => gc, :top => (headers_height + 20), :indent => 4, :format => :image)
-
         # Months headers
         month_f = @date_from
         left = subject_width
         @months.times do
           width = ((month_f >> 1) - month_f) * zoom

           gc.stroke_width(1)
           gc.text(left.round + 8, 14, "#{month_f.year}-#{month_f.month}")
           left = left + width
           month_f = month_f >> 1
         end
-
         # Weeks headers
         if show_weeks
-        	left = subject_width
-        	height = header_height
-        	if @date_from.cwday == 1
-        	    # date_from is monday
-                week_f = date_from
-        	else
-        	    # find next monday after date_from
-        		week_f = @date_from + (7 - @date_from.cwday + 1)
-        		width = (7 - @date_from.cwday + 1) * zoom
-                gc.fill('white')
-                gc.stroke('grey')
-                gc.stroke_width(1)
-                gc.rectangle(left, header_height, left + width, 2*header_height + g_height-1)
-        		left = left + width
-        	end
-        	while week_f <= date_to
-        		width = (week_f + 6 <= date_to) ? 7 * zoom : (date_to - week_f + 1) * zoom
-                gc.fill('white')
-                gc.stroke('grey')
-                gc.stroke_width(1)
-                gc.rectangle(left.round, header_height, left.round + width, 2*header_height + g_height-1)
-                gc.fill('black')
-                gc.stroke('transparent')
-                gc.stroke_width(1)
-                gc.text(left.round + 2, header_height + 14, week_f.cweek.to_s)
-        		left = left + width
-        		week_f = week_f+7
-        	end
-        end
-
+          left = subject_width
+          height = header_height
+          if @date_from.cwday == 1
+            # date_from is monday
+            week_f = date_from
+          else
+            # find next monday after date_from
+            week_f = @date_from + (7 - @date_from.cwday + 1)
+            width = (7 - @date_from.cwday + 1) * zoom
+            gc.fill('white')
+            gc.stroke('grey')
+            gc.stroke_width(1)
+            gc.rectangle(left, header_height, left + width, 2 * header_height + g_height - 1)
+            left = left + width
+          end
+          while week_f <= date_to
+            width = (week_f + 6 <= date_to) ? 7 * zoom : (date_to - week_f + 1) * zoom
+            gc.fill('white')
+            gc.stroke('grey')
+            gc.stroke_width(1)
+            gc.rectangle(left.round, header_height, left.round + width, 2 * header_height + g_height - 1)
+            gc.fill('black')
+            gc.stroke('transparent')
+            gc.stroke_width(1)
+            gc.text(left.round + 2, header_height + 14, week_f.cweek.to_s)
+            left = left + width
+            week_f = week_f + 7
+          end
+        end
         # Days details (week-end in grey)
         if show_days
-        	left = subject_width
-        	height = g_height + header_height - 1
-        	wday = @date_from.cwday
-        	(date_to - @date_from + 1).to_i.times do
-              width =  zoom
-              gc.fill(wday == 6 || wday == 7 ? '#eee' : 'white')
-              gc.stroke('#ddd')
-              gc.stroke_width(1)
-              gc.rectangle(left, 2*header_height, left + width, 2*header_height + g_height-1)
-              left = left + width
-              wday = wday + 1
-              wday = 1 if wday > 7
-        	end
-        end
-
+          left = subject_width
+          height = g_height + header_height - 1
+          wday = @date_from.cwday
+          (date_to - @date_from + 1).to_i.times do
+            width =  zoom
+            gc.fill(non_working_week_days.include?(wday) ? '#eee' : 'white')
+            gc.stroke('#ddd')
+            gc.stroke_width(1)
+            gc.rectangle(left, 2 * header_height, left + width, 2 * header_height + g_height - 1)
+            left = left + width
+            wday = wday + 1
+            wday = 1 if wday > 7
+          end
+        end
         # border
         gc.fill('transparent')
         gc.stroke('grey')
         gc.stroke_width(1)
-        gc.rectangle(0, 0, subject_width+g_width, headers_height)
+        gc.rectangle(0, 0, subject_width + g_width, headers_height)
         gc.stroke('black')
-        gc.rectangle(0, 0, subject_width+g_width, g_height+ headers_height-1)
-
+        gc.rectangle(0, 0, subject_width + g_width, g_height + headers_height - 1)
         # content
         top = headers_height + 20
-
         gc.stroke('transparent')
-        lines(:image => gc, :top => top, :zoom => zoom, :subject_width => subject_width, :format => :image)
-
+        lines(:image => gc, :top => top, :zoom => zoom,
+              :subject_width => subject_width, :format => :image)
         # today red line
         if Date.today >= @date_from and Date.today <= date_to
           gc.stroke('red')
-          x = (Date.today-@date_from+1)*zoom + subject_width
-          gc.line(x, headers_height, x, headers_height + g_height-1)
-        end
-
+          x = (Date.today - @date_from + 1) * zoom + subject_width
+          gc.line(x, headers_height, x, headers_height + g_height - 1)
+        end
         gc.draw(imgl)
         imgl.format = format
         imgl.to_blob
       end if Object.const_defined?(:Magick)
 

         pdf = ::Redmine::Export::PDF::ITCPDF.new(current_language)
         pdf.SetTitle("#{l(:label_gantt)} #{project}")
         pdf.alias_nb_pages
         pdf.footer_date = format_date(Date.today)
         pdf.AddPage("L")
-        pdf.SetFontStyle('B',12)
+        pdf.SetFontStyle('B', 12)
         pdf.SetX(15)
         pdf.RDMCell(PDF::LeftPaneWidth, 20, project.to_s)
         pdf.Ln
-        pdf.SetFontStyle('B',9)
-
+        pdf.SetFontStyle('B', 9)
         subject_width = PDF::LeftPaneWidth
         header_height = 5
-
         headers_height = header_height
         show_weeks = false
         show_days = false
-
         if self.months < 7
           show_weeks = true
-          headers_height = 2*header_height
+          headers_height = 2 * header_height
           if self.months < 3
             show_days = true
-            headers_height = 3*header_height
-          end
-        end
-
+            headers_height = 3 * header_height
+          end
+        end
         g_width = PDF.right_pane_width
         zoom = (g_width) / (self.date_to - self.date_from + 1)
         g_height = 120
         t_height = g_height + headers_height
-
         y_start = pdf.GetY
-
         # Months headers
         month_f = self.date_from
         left = subject_width
         height = header_height
         self.months.times do

           pdf.SetX(left)
           pdf.RDMCell(width, height, "#{month_f.year}-#{month_f.month}", "LTR", 0, "C")
           left = left + width
           month_f = month_f >> 1
         end
-
         # Weeks headers
         if show_weeks
           left = subject_width
           height = header_height
           if self.date_from.cwday == 1

             week_f = self.date_from + (7 - self.date_from.cwday + 1)
             width = (7 - self.date_from.cwday + 1) * zoom-1
             pdf.SetY(y_start + header_height)
             pdf.SetX(left)
             pdf.RDMCell(width + 1, height, "", "LTR")
-            left = left + width+1
+            left = left + width + 1
           end
           while week_f <= self.date_to
             width = (week_f + 6 <= self.date_to) ? 7 * zoom : (self.date_to - week_f + 1) * zoom
             pdf.SetY(y_start + header_height)
             pdf.SetX(left)
             pdf.RDMCell(width, height, (width >= 5 ? week_f.cweek.to_s : ""), "LTR", 0, "C")
             left = left + width
-            week_f = week_f+7
-          end
-        end
-
+            week_f = week_f + 7
+          end
+        end
         # Days headers
         if show_days
           left = subject_width
           height = header_height
           wday = self.date_from.cwday
-          pdf.SetFontStyle('B',7)
+          pdf.SetFontStyle('B', 7)
           (self.date_to - self.date_from + 1).to_i.times do
             width = zoom
             pdf.SetY(y_start + 2 * header_height)
             pdf.SetX(left)
             pdf.RDMCell(width, height, day_name(wday).first, "LTR", 0, "C")
             left = left + width
             wday = wday + 1
             wday = 1 if wday > 7
           end
         end
-
         pdf.SetY(y_start)
         pdf.SetX(15)
-        pdf.RDMCell(subject_width+g_width-15, headers_height, "", 1)
-
+        pdf.RDMCell(subject_width + g_width - 15, headers_height, "", 1)
         # Tasks
         top = headers_height + y_start
         options = {
           :top => top,
           :zoom => zoom,

 
       private
 
       def coordinates(start_date, end_date, progress, zoom=nil)
         zoom ||= @zoom
-
         coords = {}
         if start_date && end_date && start_date < self.date_to && end_date > self.date_from
           if start_date > self.date_from
             coords[:start] = start_date - self.date_from
             coords[:bar_start] = start_date - self.date_from

             coords[:end] = end_date - self.date_from
             coords[:bar_end] = end_date - self.date_from + 1
           else
             coords[:bar_end] = self.date_to - self.date_from + 1
           end
-
           if progress
             progress_date = start_date + (end_date - start_date + 1) * (progress / 100.0)
             if progress_date > self.date_from && progress_date > start_date
               if progress_date < self.date_to
                 coords[:bar_progress_end] = progress_date - self.date_from
               else
                 coords[:bar_progress_end] = self.date_to - self.date_from + 1
               end
             end
-
             if progress_date < Date.today
               late_date = [Date.today, end_date].min
               if late_date > self.date_from && late_date > start_date
                 if late_date < self.date_to
                   coords[:bar_late_end] = late_date - self.date_from + 1

                 end
               end
             end
           end
         end
-
         # Transforms dates into pixels witdh
         coords.keys.each do |key|
           coords[key] = (coords[key] * zoom).floor
         end
         coords
       end
 
       # Sorts a collection of issues by start_date, due_date, id for gantt rendering
       def sort_issues!(issues)
-        issues.sort! { |a, b| gantt_issue_compare(a, b, issues) }
+        issues.sort! { |a, b| gantt_issue_compare(a, b) }
       end
 
       # TODO: top level issues should be sorted by start date
-      def gantt_issue_compare(x, y, issues)
+      def gantt_issue_compare(x, y)
         if x.root_id == y.root_id
           x.lft <=> y.lft
         else
           x.root_id <=> y.root_id
         end

       end
 
       def html_subject(params, subject, options={})
         style = "position: absolute;top:#{params[:top]}px;left:#{params[:indent]}px;"
         style << "width:#{params[:subject_width] - params[:indent]}px;" if params[:subject_width]
-
-        output = view.content_tag 'div', subject, :class => options[:css], :style => style, :title => options[:title]
+        output = view.content_tag('div', subject,
+                                  :class => options[:css], :style => style,
+                                  :title => options[:title])
         @subjects << output
         output
       end
 
       def pdf_subject(params, subject, options={})
         params[:pdf].SetY(params[:top])
         params[:pdf].SetX(15)
-
         char_limit = PDF::MaxCharactorsForSubject - params[:indent]
-        params[:pdf].RDMCell(params[:subject_width]-15, 5, (" " * params[:indent]) +  subject.to_s.sub(/^(.{#{char_limit}}[^\s]*\s).*$/, '\1 (...)'), "LR")
-
+        params[:pdf].RDMCell(params[:subject_width] - 15, 5,
+                             (" " * params[:indent]) +
+                               subject.to_s.sub(/^(.{#{char_limit}}[^\s]*\s).*$/, '\1 (...)'),
+                              "LR")
         params[:pdf].SetY(params[:top])
         params[:pdf].SetX(params[:subject_width])
         params[:pdf].RDMCell(params[:g_width], 5, "", "LR")
       end
 

 
       def html_task(params, coords, options={})
         output = ''
         # Renders the task bar, with progress and late
         if coords[:bar_start] && coords[:bar_end]
-          output << "<div style='top:#{ params[:top] }px;left:#{ coords[:bar_start] }px;width:#{ coords[:bar_end] - coords[:bar_start] - 2}px;' class='#{options[:css]} task_todo'>&nbsp;</div>".html_safe
-
+          width = coords[:bar_end] - coords[:bar_start] - 2
+          style = ""
+          style << "top:#{params[:top]}px;"
+          style << "left:#{coords[:bar_start]}px;"
+          style << "width:#{width}px;"
+          output << view.content_tag(:div, '&nbsp;'.html_safe,
+                                     :style => style,
+                                     :class => "#{options[:css]} task_todo")
           if coords[:bar_late_end]
-            output << "<div style='top:#{ params[:top] }px;left:#{ coords[:bar_start] }px;width:#{ coords[:bar_late_end] - coords[:bar_start] - 2}px;' class='#{options[:css]} task_late'>&nbsp;</div>".html_safe
+            width = coords[:bar_late_end] - coords[:bar_start] - 2
+            style = ""
+            style << "top:#{params[:top]}px;"
+            style << "left:#{coords[:bar_start]}px;"
+            style << "width:#{width}px;"
+            output << view.content_tag(:div, '&nbsp;'.html_safe,
+                                       :style => style,
+                                       :class => "#{options[:css]} task_late")
           end
           if coords[:bar_progress_end]
-            output << "<div style='top:#{ params[:top] }px;left:#{ coords[:bar_start] }px;width:#{ coords[:bar_progress_end] - coords[:bar_start] - 2}px;' class='#{options[:css]} task_done'>&nbsp;</div>".html_safe
+            width = coords[:bar_progress_end] - coords[:bar_start] - 2
+            style = ""
+            style << "top:#{params[:top]}px;"
+            style << "left:#{coords[:bar_start]}px;"
+            style << "width:#{width}px;"
+            output << view.content_tag(:div, '&nbsp;'.html_safe,
+                                       :style => style,
+                                       :class => "#{options[:css]} task_done")
           end
         end
         # Renders the markers
         if options[:markers]
           if coords[:start]
-            output << "<div style='top:#{ params[:top] }px;left:#{ coords[:start] }px;width:15px;' class='#{options[:css]} marker starting'>&nbsp;</div>".html_safe
+            style = ""
+            style << "top:#{params[:top]}px;"
+            style << "left:#{coords[:start]}px;"
+            style << "width:15px;"
+            output << view.content_tag(:div, '&nbsp;'.html_safe,
+                                       :style => style,
+                                       :class => "#{options[:css]} marker starting")
           end
           if coords[:end]
-            output << "<div style='top:#{ params[:top] }px;left:#{ coords[:end] + params[:zoom] }px;width:15px;' class='#{options[:css]} marker ending'>&nbsp;</div>".html_safe
+            style = ""
+            style << "top:#{params[:top]}px;"
+            style << "left:#{coords[:end] + params[:zoom]}px;"
+            style << "width:15px;"
+            output << view.content_tag(:div, '&nbsp;'.html_safe,
+                                       :style => style,
+                                       :class => "#{options[:css]} marker ending")
           end
         end
         # Renders the label on the right
         if options[:label]
-          output << "<div style='top:#{ params[:top] }px;left:#{ (coords[:bar_end] || 0) + 8 }px;' class='#{options[:css]} label'>".html_safe
-          output << options[:label]
-          output << "</div>".html_safe
+          style = ""
+          style << "top:#{params[:top]}px;"
+          style << "left:#{(coords[:bar_end] || 0) + 8}px;"
+          style << "width:15px;"
+          output << view.content_tag(:div, options[:label],
+                                     :style => style,
+                                     :class => "#{options[:css]} label")
         end
         # Renders the tooltip
         if options[:issue] && coords[:bar_start] && coords[:bar_end]
-          output << "<div class='tooltip' style='position: absolute;top:#{ params[:top] }px;left:#{ coords[:bar_start] }px;width:#{ coords[:bar_end] - coords[:bar_start] }px;height:12px;'>".html_safe
-          output << '<span class="tip">'.html_safe
-          output << view.render_issue_tooltip(options[:issue]).html_safe
-          output << "</span></div>".html_safe
+          s = view.content_tag(:span,
+                               view.render_issue_tooltip(options[:issue]).html_safe,
+                               :class => "tip")
+          style = ""
+          style << "position: absolute;"
+          style << "top:#{params[:top]}px;"
+          style << "left:#{coords[:bar_start]}px;"
+          style << "width:#{coords[:bar_end] - coords[:bar_start]}px;"
+          style << "height:12px;"
+          output << view.content_tag(:div, s.html_safe,
+                                     :style => style,
+                                     :class => "tooltip")
         end
         @lines << output
         output
       end
 
       def pdf_task(params, coords, options={})
         height = options[:height] || 2
-
         # Renders the task bar, with progress and late
         if coords[:bar_start] && coords[:bar_end]
-          params[:pdf].SetY(params[:top]+1.5)
+          params[:pdf].SetY(params[:top] + 1.5)
           params[:pdf].SetX(params[:subject_width] + coords[:bar_start])
-          params[:pdf].SetFillColor(200,200,200)
+          params[:pdf].SetFillColor(200, 200, 200)
           params[:pdf].RDMCell(coords[:bar_end] - coords[:bar_start], height, "", 0, 0, "", 1)
-
           if coords[:bar_late_end]
-            params[:pdf].SetY(params[:top]+1.5)
+            params[:pdf].SetY(params[:top] + 1.5)
             params[:pdf].SetX(params[:subject_width] + coords[:bar_start])
-            params[:pdf].SetFillColor(255,100,100)
+            params[:pdf].SetFillColor(255, 100, 100)
             params[:pdf].RDMCell(coords[:bar_late_end] - coords[:bar_start], height, "", 0, 0, "", 1)
           end
           if coords[:bar_progress_end]
-            params[:pdf].SetY(params[:top]+1.5)
+            params[:pdf].SetY(params[:top] + 1.5)
             params[:pdf].SetX(params[:subject_width] + coords[:bar_start])
-            params[:pdf].SetFillColor(90,200,90)
+            params[:pdf].SetFillColor(90, 200, 90)
             params[:pdf].RDMCell(coords[:bar_progress_end] - coords[:bar_start], height, "", 0, 0, "", 1)
           end
         end
         # Renders the markers
         if options[:markers]
           if coords[:start]
             params[:pdf].SetY(params[:top] + 1)
             params[:pdf].SetX(params[:subject_width] + coords[:start] - 1)
-            params[:pdf].SetFillColor(50,50,200)
+            params[:pdf].SetFillColor(50, 50, 200)
             params[:pdf].RDMCell(2, 2, "", 0, 0, "", 1)
           end
           if coords[:end]
             params[:pdf].SetY(params[:top] + 1)
             params[:pdf].SetX(params[:subject_width] + coords[:end] - 1)
-            params[:pdf].SetFillColor(50,50,200)
+            params[:pdf].SetFillColor(50, 50, 200)
             params[:pdf].RDMCell(2, 2, "", 0, 0, "", 1)
           end
         end
         # Renders the label on the right
         if options[:label]

         end
       end
 
       def image_task(params, coords, options={})
         height = options[:height] || 6
-
         # Renders the task bar, with progress and late
         if coords[:bar_start] && coords[:bar_end]
           params[:image].fill('#aaa')
-          params[:image].rectangle(params[:subject_width] + coords[:bar_start], params[:top], params[:subject_width] + coords[:bar_end], params[:top] - height)
-
+          params[:image].rectangle(params[:subject_width] + coords[:bar_start],
+                                   params[:top],
+                                   params[:subject_width] + coords[:bar_end],
+                                   params[:top] - height)
           if coords[:bar_late_end]
             params[:image].fill('#f66')
-            params[:image].rectangle(params[:subject_width] + coords[:bar_start], params[:top], params[:subject_width] + coords[:bar_late_end], params[:top] - height)
+            params[:image].rectangle(params[:subject_width] + coords[:bar_start],
+                                     params[:top],
+                                     params[:subject_width] + coords[:bar_late_end],
+                                     params[:top] - height)
           end
           if coords[:bar_progress_end]
             params[:image].fill('#00c600')
-            params[:image].rectangle(params[:subject_width] + coords[:bar_start], params[:top], params[:subject_width] + coords[:bar_progress_end], params[:top] - height)
+            params[:image].rectangle(params[:subject_width] + coords[:bar_start],
+                                     params[:top],
+                                     params[:subject_width] + coords[:bar_progress_end],
+                                     params[:top] - height)
           end
         end
         # Renders the markers
         if options[:markers]
           if coords[:start]
             x = params[:subject_width] + coords[:start]
             y = params[:top] - height / 2
             params[:image].fill('blue')
-            params[:image].polygon(x-4, y, x, y-4, x+4, y, x, y+4)
+            params[:image].polygon(x - 4, y, x, y - 4, x + 4, y, x, y + 4)
           end
           if coords[:end]
             x = params[:subject_width] + coords[:end] + params[:zoom]
             y = params[:top] - height / 2
             params[:image].fill('blue')
-            params[:image].polygon(x-4, y, x, y-4, x+4, y, x, y+4)
+            params[:image].polygon(x - 4, y, x, y - 4, x + 4, y, x, y + 4)
           end
         end
         # Renders the label on the right
         if options[:label]
           params[:image].fill('black')
-          params[:image].text(params[:subject_width] + (coords[:bar_end] || 0) + 5,params[:top] + 1, options[:label])
+          params[:image].text(params[:subject_width] + (coords[:bar_end] || 0) + 5,
+                              params[:top] + 1,
+                              options[:label])
         end
       end
     end
   end
 end