Chris@0: # Redmine - project management software
Chris@0: # Copyright (C) 2006-2008  Jean-Philippe Lang
Chris@0: #
Chris@0: # This program is free software; you can redistribute it and/or
Chris@0: # modify it under the terms of the GNU General Public License
Chris@0: # as published by the Free Software Foundation; either version 2
Chris@0: # of the License, or (at your option) any later version.
Chris@0: # 
Chris@0: # This program is distributed in the hope that it will be useful,
Chris@0: # but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@0: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@0: # GNU General Public License for more details.
Chris@0: # 
Chris@0: # You should have received a copy of the GNU General Public License
Chris@0: # along with this program; if not, write to the Free Software
Chris@0: # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
Chris@0: 
Chris@0: module Redmine
Chris@0:   module Helpers
Chris@0:     # Simple class to handle gantt chart data
Chris@0:     class Gantt
chris@22:       include ERB::Util
chris@22:       include Redmine::I18n
chris@22: 
chris@22:       # :nodoc:
chris@22:       # Some utility methods for the PDF export
chris@22:       class PDF
chris@22:         MaxCharactorsForSubject = 45
chris@22:         TotalWidth = 280
chris@22:         LeftPaneWidth = 100
chris@22: 
chris@22:         def self.right_pane_width
chris@22:           TotalWidth - LeftPaneWidth
chris@22:         end
chris@22:       end
chris@22: 
Chris@117:       attr_reader :year_from, :month_from, :date_from, :date_to, :zoom, :months, :truncated, :max_rows
chris@22:       attr_accessor :query
chris@22:       attr_accessor :project
chris@22:       attr_accessor :view
chris@22:       
Chris@0:       def initialize(options={})
Chris@0:         options = options.dup
Chris@0:         
Chris@0:         if options[:year] && options[:year].to_i >0
Chris@0:           @year_from = options[:year].to_i
Chris@0:           if options[:month] && options[:month].to_i >=1 && options[:month].to_i <= 12
Chris@0:             @month_from = options[:month].to_i
Chris@0:           else
Chris@0:             @month_from = 1
Chris@0:           end
Chris@0:         else
Chris@0:           @month_from ||= Date.today.month
Chris@0:           @year_from ||= Date.today.year
Chris@0:         end
Chris@0:         
Chris@0:         zoom = (options[:zoom] || User.current.pref[:gantt_zoom]).to_i
Chris@0:         @zoom = (zoom > 0 && zoom < 5) ? zoom : 2    
Chris@0:         months = (options[:months] || User.current.pref[:gantt_months]).to_i
Chris@0:         @months = (months > 0 && months < 25) ? months : 6
Chris@0:         
Chris@0:         # Save gantt parameters as user preference (zoom and months count)
Chris@0:         if (User.current.logged? && (@zoom != User.current.pref[:gantt_zoom] || @months != User.current.pref[:gantt_months]))
Chris@0:           User.current.pref[:gantt_zoom], User.current.pref[:gantt_months] = @zoom, @months
Chris@0:           User.current.preference.save
Chris@0:         end
Chris@0:         
Chris@0:         @date_from = Date.civil(@year_from, @month_from, 1)
Chris@0:         @date_to = (@date_from >> @months) - 1
Chris@117:         
Chris@117:         @subjects = ''
Chris@117:         @lines = ''
Chris@117:         @number_of_rows = nil
Chris@117:         
Chris@117:         @issue_ancestors = []
Chris@117:         
Chris@117:         @truncated = false
Chris@117:         if options.has_key?(:max_rows)
Chris@117:           @max_rows = options[:max_rows]
Chris@117:         else
Chris@117:           @max_rows = Setting.gantt_items_limit.blank? ? nil : Setting.gantt_items_limit.to_i
Chris@117:         end
Chris@0:       end
chris@22: 
chris@22:       def common_params
chris@22:         { :controller => 'gantts', :action => 'show', :project_id => @project }
Chris@0:       end
Chris@0:       
Chris@0:       def params
chris@22:         common_params.merge({  :zoom => zoom, :year => year_from, :month => month_from, :months => months })
Chris@0:       end
Chris@0:       
Chris@0:       def params_previous
chris@22:         common_params.merge({:year => (date_from << months).year, :month => (date_from << months).month, :zoom => zoom, :months => months })
Chris@0:       end
Chris@0:       
Chris@0:       def params_next
chris@22:         common_params.merge({:year => (date_from >> months).year, :month => (date_from >> months).month, :zoom => zoom, :months => months })
Chris@0:       end
chris@22: 
chris@22:             ### Extracted from the HTML view/helpers
chris@22:       # Returns the number of rows that will be rendered on the Gantt chart
chris@22:       def number_of_rows
Chris@117:         return @number_of_rows if @number_of_rows
Chris@117:         
Chris@117:         rows = if @project
Chris@117:           number_of_rows_on_project(@project)
chris@22:         else
Chris@117:           Project.roots.visible.has_module('issue_tracking').inject(0) do |total, project|
chris@22:             total += number_of_rows_on_project(project)
chris@22:           end
chris@22:         end
Chris@117:         
Chris@117:         rows > @max_rows ? @max_rows : rows
chris@22:       end
chris@22: 
chris@22:       # Returns the number of rows that will be used to list a project on
chris@22:       # the Gantt chart.  This will recurse for each subproject.
chris@22:       def number_of_rows_on_project(project)
chris@22:         # Remove the project requirement for Versions because it will
chris@22:         # restrict issues to only be on the current project.  This
chris@22:         # ends up missing issues which are assigned to shared versions.
chris@22:         @query.project = nil if @query.project
chris@22: 
chris@22:         # One Root project
chris@22:         count = 1
chris@22:         # Issues without a Version
chris@22:         count += project.issues.for_gantt.without_version.with_query(@query).count
chris@22: 
chris@22:         # Versions
chris@22:         count += project.versions.count
chris@22: 
chris@22:         # Issues on the Versions
chris@22:         project.versions.each do |version|
chris@22:           count += version.fixed_issues.for_gantt.with_query(@query).count
chris@22:         end
chris@22: 
chris@22:         # Subprojects
Chris@117:         project.children.visible.has_module('issue_tracking').each do |subproject|
chris@22:           count += number_of_rows_on_project(subproject)
chris@22:         end
chris@22: 
chris@22:         count
chris@22:       end
chris@22: 
chris@22:       # Renders the subjects of the Gantt chart, the left side.
chris@22:       def subjects(options={})
Chris@117:         render(options.merge(:only => :subjects)) unless @subjects_rendered
Chris@117:         @subjects
chris@22:       end
chris@22: 
chris@22:       # Renders the lines of the Gantt chart, the right side
chris@22:       def lines(options={})
Chris@117:         render(options.merge(:only => :lines)) unless @lines_rendered
Chris@117:         @lines
Chris@117:       end
Chris@117:       
Chris@117:       def render(options={})
Chris@117:         options = {:indent => 4, :render => :subject, :format => :html}.merge(options)
Chris@117:         
Chris@117:         @subjects = '' unless options[:only] == :lines
Chris@117:         @lines = '' unless options[:only] == :subjects
Chris@117:         @number_of_rows = 0
Chris@117:         
chris@22:         if @project
Chris@117:           render_project(@project, options)
chris@22:         else
Chris@117:           Project.roots.visible.has_module('issue_tracking').each do |project|
Chris@117:             render_project(project, options)
Chris@117:             break if abort?
chris@22:           end
chris@22:         end
chris@22:         
Chris@117:         @subjects_rendered = true unless options[:only] == :lines
Chris@117:         @lines_rendered = true unless options[:only] == :subjects
Chris@117:         
Chris@117:         render_end(options)
chris@22:       end
chris@22: 
chris@22:       def render_project(project, options={})
chris@22:         options[:top] = 0 unless options.key? :top
chris@22:         options[:indent_increment] = 20 unless options.key? :indent_increment
chris@22:         options[:top_increment] = 20 unless options.key? :top_increment
chris@22: 
Chris@117:         subject_for_project(project, options) unless options[:only] == :lines
Chris@117:         line_for_project(project, options) unless options[:only] == :subjects
chris@22:         
chris@22:         options[:top] += options[:top_increment]
chris@22:         options[:indent] += options[:indent_increment]
Chris@117:         @number_of_rows += 1
Chris@117:         return if abort?
chris@22:         
chris@22:         # Second, Issues without a version
Chris@117:         issues = project.issues.for_gantt.without_version.with_query(@query).all(:limit => current_limit)
Chris@117:         sort_issues!(issues)
chris@22:         if issues
Chris@117:           render_issues(issues, options)
Chris@117:           return if abort?
chris@22:         end
chris@22: 
chris@22:         # Third, Versions
chris@22:         project.versions.sort.each do |version|
Chris@117:           render_version(version, options)
Chris@117:           return if abort?
chris@22:         end
chris@22: 
chris@22:         # Fourth, subprojects
Chris@117:         project.children.visible.has_module('issue_tracking').each do |project|
Chris@117:           render_project(project, options)
Chris@117:           return if abort?
Chris@117:         end unless project.leaf?
chris@22: 
chris@22:         # Remove indent to hit the next sibling
chris@22:         options[:indent] -= options[:indent_increment]
chris@22:       end
chris@22: 
chris@22:       def render_issues(issues, options={})
Chris@117:         @issue_ancestors = []
Chris@117:         
chris@22:         issues.each do |i|
Chris@117:           subject_for_issue(i, options) unless options[:only] == :lines
Chris@117:           line_for_issue(i, options) unless options[:only] == :subjects
Chris@117:           
chris@22:           options[:top] += options[:top_increment]
Chris@117:           @number_of_rows += 1
Chris@117:           break if abort?
chris@22:         end
Chris@117:         
Chris@117:         options[:indent] -= (options[:indent_increment] * @issue_ancestors.size)
chris@22:       end
chris@22: 
chris@22:       def render_version(version, options={})
chris@22:         # Version header
Chris@117:         subject_for_version(version, options) unless options[:only] == :lines
Chris@117:         line_for_version(version, options) unless options[:only] == :subjects
chris@22:         
chris@22:         options[:top] += options[:top_increment]
Chris@117:         @number_of_rows += 1
Chris@117:         return if abort?
Chris@117:         
chris@22:         # Remove the project requirement for Versions because it will
chris@22:         # restrict issues to only be on the current project.  This
chris@22:         # ends up missing issues which are assigned to shared versions.
chris@22:         @query.project = nil if @query.project
chris@22:         
Chris@117:         issues = version.fixed_issues.for_gantt.with_query(@query).all(:limit => current_limit)
chris@22:         if issues
Chris@117:           sort_issues!(issues)
chris@22:           # Indent issues
chris@22:           options[:indent] += options[:indent_increment]
Chris@117:           render_issues(issues, options)
chris@22:           options[:indent] -= options[:indent_increment]
chris@22:         end
Chris@117:       end
Chris@117:       
Chris@117:       def render_end(options={})
Chris@117:         case options[:format]
Chris@117:         when :pdf        
Chris@117:           options[:pdf].Line(15, options[:top], PDF::TotalWidth, options[:top])
Chris@117:         end
chris@22:       end
chris@22: 
chris@22:       def subject_for_project(project, options)
chris@22:         case options[:format]
chris@22:         when :html
Chris@117:           subject = "<span class='icon icon-projects #{project.overdue? ? 'project-overdue' : ''}'>"
Chris@117:           subject << view.link_to_project(project)
Chris@117:           subject << '</span>'
Chris@117:           html_subject(options, subject, :css => "project-name")
chris@22:         when :image
Chris@117:           image_subject(options, project.name)
chris@22:         when :pdf
Chris@117:           pdf_new_page?(options)
Chris@117:           pdf_subject(options, project.name)
chris@22:         end
chris@22:       end
chris@22: 
chris@22:       def line_for_project(project, options)
chris@37:         # Skip versions that don't have a start_date or due date
chris@37:         if project.is_a?(Project) && project.start_date && project.due_date
chris@22:           options[:zoom] ||= 1
chris@22:           options[:g_width] ||= (self.date_to - self.date_from + 1) * options[:zoom]
Chris@117:             
Chris@117:           coords = coordinates(project.start_date, project.due_date, nil, options[:zoom])
Chris@117:           label = h(project)
chris@22:           
chris@22:           case options[:format]
chris@22:           when :html
Chris@117:             html_task(options, coords, :css => "project task", :label => label, :markers => true)
chris@22:           when :image
Chris@117:             image_task(options, coords, :label => label, :markers => true, :height => 3)
chris@22:           when :pdf
Chris@117:             pdf_task(options, coords, :label => label, :markers => true, :height => 0.8)
chris@22:           end
chris@22:         else
chris@22:           ActiveRecord::Base.logger.debug "Gantt#line_for_project was not given a project with a start_date"
chris@22:           ''
chris@22:         end
chris@22:       end
chris@22: 
chris@22:       def subject_for_version(version, options)
chris@22:         case options[:format]
chris@22:         when :html
Chris@117:           subject = "<span class='icon icon-package #{version.behind_schedule? ? 'version-behind-schedule' : ''} #{version.overdue? ? 'version-overdue' : ''}'>"
Chris@117:           subject << view.link_to_version(version)
Chris@117:           subject << '</span>'
Chris@117:           html_subject(options, subject, :css => "version-name")
chris@22:         when :image
Chris@117:           image_subject(options, version.to_s_with_project)
chris@22:         when :pdf
Chris@117:           pdf_new_page?(options)
Chris@117:           pdf_subject(options, version.to_s_with_project)
chris@22:         end
chris@22:       end
chris@22: 
chris@22:       def line_for_version(version, options)
chris@22:         # Skip versions that don't have a start_date
chris@37:         if version.is_a?(Version) && version.start_date && version.due_date
chris@22:           options[:zoom] ||= 1
chris@22:           options[:g_width] ||= (self.date_to - self.date_from + 1) * options[:zoom]
Chris@117:           
Chris@117:           coords = coordinates(version.start_date, version.due_date, version.completed_pourcent, options[:zoom])
Chris@117:           label = "#{h version } #{h version.completed_pourcent.to_i.to_s}%"
Chris@117:           label = h("#{version.project} -") + label unless @project && @project == version.project
chris@22: 
chris@22:           case options[:format]
chris@22:           when :html
Chris@117:             html_task(options, coords, :css => "version task", :label => label, :markers => true)
chris@22:           when :image
Chris@117:             image_task(options, coords, :label => label, :markers => true, :height => 3)
chris@22:           when :pdf
Chris@117:             pdf_task(options, coords, :label => label, :markers => true, :height => 0.8)
chris@22:           end
chris@22:         else
chris@22:           ActiveRecord::Base.logger.debug "Gantt#line_for_version was not given a version with a start_date"
chris@22:           ''
chris@22:         end
chris@22:       end
chris@22: 
chris@22:       def subject_for_issue(issue, options)
Chris@117:         while @issue_ancestors.any? && !issue.is_descendant_of?(@issue_ancestors.last)
Chris@117:           @issue_ancestors.pop
Chris@117:           options[:indent] -= options[:indent_increment]
Chris@117:         end
Chris@117:           
Chris@117:         output = case options[:format]
chris@22:         when :html
Chris@117:           css_classes = ''
Chris@117:           css_classes << ' issue-overdue' if issue.overdue?
Chris@117:           css_classes << ' issue-behind-schedule' if issue.behind_schedule?
Chris@117:           css_classes << ' icon icon-issue' unless Setting.gravatar_enabled? && issue.assigned_to
Chris@117:           
Chris@117:           subject = "<span class='#{css_classes}'>"
Chris@117:           if issue.assigned_to.present?
Chris@117:             assigned_string = l(:field_assigned_to) + ": " + issue.assigned_to.name
Chris@117:             subject << view.avatar(issue.assigned_to, :class => 'gravatar icon-gravatar', :size => 10, :title => assigned_string)
Chris@117:           end
Chris@117:           subject << view.link_to_issue(issue)
Chris@117:           subject << '</span>'
Chris@117:           html_subject(options, subject, :css => "issue-subject") + "\n"
Chris@117:         when :image
Chris@117:           image_subject(options, issue.subject)
Chris@117:         when :pdf
Chris@117:           pdf_new_page?(options)
Chris@117:           pdf_subject(options, issue.subject)
Chris@117:         end
chris@22: 
Chris@117:         unless issue.leaf?
Chris@117:           @issue_ancestors << issue
Chris@117:           options[:indent] += options[:indent_increment]
Chris@117:         end
chris@22:         
Chris@117:         output
chris@22:       end
chris@22: 
chris@22:       def line_for_issue(issue, options)
chris@22:         # Skip issues that don't have a due_before (due_date or version's due_date)
chris@22:         if issue.is_a?(Issue) && issue.due_before
Chris@117:           coords = coordinates(issue.start_date, issue.due_before, issue.done_ratio, options[:zoom])
Chris@117:           label = "#{ issue.status.name } #{ issue.done_ratio }%"
Chris@117:           
chris@22:           case options[:format]
chris@22:           when :html
Chris@117:             html_task(options, coords, :css => "task " + (issue.leaf? ? 'leaf' : 'parent'), :label => label, :issue => issue, :markers => !issue.leaf?)
chris@22:           when :image
Chris@117:             image_task(options, coords, :label => label)
chris@22:           when :pdf
Chris@117:             pdf_task(options, coords, :label => label)
Chris@117:         end
chris@22:         else
chris@22:           ActiveRecord::Base.logger.debug "GanttHelper#line_for_issue was not given an issue with a due_before"
chris@22:           ''
chris@22:         end
chris@22:       end
chris@22: 
Chris@0:       # Generates a gantt image
Chris@0:       # Only defined if RMagick is avalaible
chris@22:       def to_image(format='PNG')
Chris@0:         date_to = (@date_from >> @months)-1    
Chris@0:         show_weeks = @zoom > 1
Chris@0:         show_days = @zoom > 2
Chris@0:         
Chris@1:         subject_width = 400
Chris@0:         header_heigth = 18
Chris@0:         # width of one day in pixels
Chris@0:         zoom = @zoom*2
Chris@0:         g_width = (@date_to - @date_from + 1)*zoom
chris@22:         g_height = 20 * number_of_rows + 30
Chris@0:         headers_heigth = (show_weeks ? 2*header_heigth : header_heigth)
Chris@0:         height = g_height + headers_heigth
Chris@0:             
Chris@0:         imgl = Magick::ImageList.new
Chris@0:         imgl.new_image(subject_width+g_width+1, height)
Chris@0:         gc = Magick::Draw.new
Chris@0:         
Chris@0:         # Subjects
Chris@117:         gc.stroke('transparent')
chris@22:         subjects(:image => gc, :top => (headers_heigth + 20), :indent => 4, :format => :image)
Chris@0:     
Chris@0:         # Months headers
Chris@0:         month_f = @date_from
Chris@0:         left = subject_width
Chris@0:         @months.times do 
Chris@0:           width = ((month_f >> 1) - month_f) * zoom
Chris@0:           gc.fill('white')
Chris@0:           gc.stroke('grey')
Chris@0:           gc.stroke_width(1)
Chris@0:           gc.rectangle(left, 0, left + width, height)
Chris@0:           gc.fill('black')
Chris@0:           gc.stroke('transparent')
Chris@0:           gc.stroke_width(1)
Chris@0:           gc.text(left.round + 8, 14, "#{month_f.year}-#{month_f.month}")
Chris@0:           left = left + width
Chris@0:           month_f = month_f >> 1
Chris@0:         end
Chris@0:         
Chris@0:         # Weeks headers
Chris@0:         if show_weeks
Chris@0:         	left = subject_width
Chris@0:         	height = header_heigth
Chris@0:         	if @date_from.cwday == 1
Chris@0:         	    # date_from is monday
Chris@0:                 week_f = date_from
Chris@0:         	else
Chris@0:         	    # find next monday after date_from
Chris@0:         		week_f = @date_from + (7 - @date_from.cwday + 1)
Chris@0:         		width = (7 - @date_from.cwday + 1) * zoom
Chris@0:                 gc.fill('white')
Chris@0:                 gc.stroke('grey')
Chris@0:                 gc.stroke_width(1)
Chris@0:                 gc.rectangle(left, header_heigth, left + width, 2*header_heigth + g_height-1)
Chris@0:         		left = left + width
Chris@0:         	end
Chris@0:         	while week_f <= date_to
Chris@0:         		width = (week_f + 6 <= date_to) ? 7 * zoom : (date_to - week_f + 1) * zoom
Chris@0:                 gc.fill('white')
Chris@0:                 gc.stroke('grey')
Chris@0:                 gc.stroke_width(1)
Chris@0:                 gc.rectangle(left.round, header_heigth, left.round + width, 2*header_heigth + g_height-1)
Chris@0:                 gc.fill('black')
Chris@0:                 gc.stroke('transparent')
Chris@0:                 gc.stroke_width(1)
Chris@0:                 gc.text(left.round + 2, header_heigth + 14, week_f.cweek.to_s)
Chris@0:         		left = left + width
Chris@0:         		week_f = week_f+7
Chris@0:         	end
Chris@0:         end
Chris@0:         
Chris@0:         # Days details (week-end in grey)
Chris@0:         if show_days
Chris@0:         	left = subject_width
Chris@0:         	height = g_height + header_heigth - 1
Chris@0:         	wday = @date_from.cwday
Chris@0:         	(date_to - @date_from + 1).to_i.times do 
Chris@0:               width =  zoom
Chris@0:               gc.fill(wday == 6 || wday == 7 ? '#eee' : 'white')
Chris@117:               gc.stroke('#ddd')
Chris@0:               gc.stroke_width(1)
Chris@0:               gc.rectangle(left, 2*header_heigth, left + width, 2*header_heigth + g_height-1)
Chris@0:               left = left + width
Chris@0:               wday = wday + 1
Chris@0:               wday = 1 if wday > 7
Chris@0:         	end
Chris@0:         end
Chris@0:     
Chris@0:         # border
Chris@0:         gc.fill('transparent')
Chris@0:         gc.stroke('grey')
Chris@0:         gc.stroke_width(1)
Chris@0:         gc.rectangle(0, 0, subject_width+g_width, headers_heigth)
Chris@0:         gc.stroke('black')
Chris@0:         gc.rectangle(0, 0, subject_width+g_width, g_height+ headers_heigth-1)
Chris@0:             
Chris@0:         # content
Chris@0:         top = headers_heigth + 20
Chris@117: 
Chris@117:         gc.stroke('transparent')
chris@22:         lines(:image => gc, :top => top, :zoom => zoom, :subject_width => subject_width, :format => :image)
Chris@0:         
Chris@0:         # today red line
Chris@0:         if Date.today >= @date_from and Date.today <= date_to
Chris@0:           gc.stroke('red')
Chris@0:           x = (Date.today-@date_from+1)*zoom + subject_width
Chris@0:           gc.line(x, headers_heigth, x, headers_heigth + g_height-1)      
Chris@0:         end    
Chris@0:         
Chris@0:         gc.draw(imgl)
Chris@0:         imgl.format = format
Chris@0:         imgl.to_blob
Chris@0:       end if Object.const_defined?(:Magick)
chris@22: 
chris@22:       def to_pdf
chris@22:         pdf = ::Redmine::Export::PDF::IFPDF.new(current_language)
chris@22:         pdf.SetTitle("#{l(:label_gantt)} #{project}")
chris@22:         pdf.AliasNbPages
chris@22:         pdf.footer_date = format_date(Date.today)
chris@22:         pdf.AddPage("L")
chris@22:         pdf.SetFontStyle('B',12)
chris@22:         pdf.SetX(15)
chris@22:         pdf.Cell(PDF::LeftPaneWidth, 20, project.to_s)
chris@22:         pdf.Ln
chris@22:         pdf.SetFontStyle('B',9)
chris@22:         
chris@22:         subject_width = PDF::LeftPaneWidth
chris@22:         header_heigth = 5
chris@22:         
chris@22:         headers_heigth = header_heigth
chris@22:         show_weeks = false
chris@22:         show_days = false
chris@22:         
chris@22:         if self.months < 7
chris@22:           show_weeks = true
chris@22:           headers_heigth = 2*header_heigth
chris@22:           if self.months < 3
chris@22:             show_days = true
chris@22:             headers_heigth = 3*header_heigth
chris@22:           end
chris@22:         end
chris@22:         
chris@22:         g_width = PDF.right_pane_width
chris@22:         zoom = (g_width) / (self.date_to - self.date_from + 1)
chris@22:         g_height = 120
chris@22:         t_height = g_height + headers_heigth
chris@22:         
chris@22:         y_start = pdf.GetY
chris@22:         
chris@22:         # Months headers
chris@22:         month_f = self.date_from
chris@22:         left = subject_width
chris@22:         height = header_heigth
chris@22:         self.months.times do 
chris@22:           width = ((month_f >> 1) - month_f) * zoom 
chris@22:           pdf.SetY(y_start)
chris@22:           pdf.SetX(left)
chris@22:           pdf.Cell(width, height, "#{month_f.year}-#{month_f.month}", "LTR", 0, "C")
chris@22:           left = left + width
chris@22:           month_f = month_f >> 1
chris@22:         end  
chris@22:         
chris@22:         # Weeks headers
chris@22:         if show_weeks
chris@22:           left = subject_width
chris@22:           height = header_heigth
chris@22:           if self.date_from.cwday == 1
chris@22:             # self.date_from is monday
chris@22:             week_f = self.date_from
chris@22:           else
chris@22:             # find next monday after self.date_from
chris@22:             week_f = self.date_from + (7 - self.date_from.cwday + 1)
chris@22:             width = (7 - self.date_from.cwday + 1) * zoom-1
chris@22:             pdf.SetY(y_start + header_heigth)
chris@22:             pdf.SetX(left)
chris@22:             pdf.Cell(width + 1, height, "", "LTR")
chris@22:             left = left + width+1
chris@22:           end
chris@22:           while week_f <= self.date_to
chris@22:             width = (week_f + 6 <= self.date_to) ? 7 * zoom : (self.date_to - week_f + 1) * zoom
chris@22:             pdf.SetY(y_start + header_heigth)
chris@22:             pdf.SetX(left)
chris@22:             pdf.Cell(width, height, (width >= 5 ? week_f.cweek.to_s : ""), "LTR", 0, "C")
chris@22:             left = left + width
chris@22:             week_f = week_f+7
chris@22:           end
chris@22:         end
chris@22:         
chris@22:         # Days headers
chris@22:         if show_days
chris@22:           left = subject_width
chris@22:           height = header_heigth
chris@22:           wday = self.date_from.cwday
chris@22:           pdf.SetFontStyle('B',7)
chris@22:           (self.date_to - self.date_from + 1).to_i.times do 
chris@22:             width = zoom
chris@22:             pdf.SetY(y_start + 2 * header_heigth)
chris@22:             pdf.SetX(left)
chris@22:             pdf.Cell(width, height, day_name(wday).first, "LTR", 0, "C")
chris@22:             left = left + width
chris@22:             wday = wday + 1
chris@22:             wday = 1 if wday > 7
chris@22:           end
chris@22:         end
chris@22:         
chris@22:         pdf.SetY(y_start)
chris@22:         pdf.SetX(15)
chris@22:         pdf.Cell(subject_width+g_width-15, headers_heigth, "", 1)
chris@22:         
chris@22:         # Tasks
chris@22:         top = headers_heigth + y_start
Chris@117:         options = {
Chris@117:           :top => top,
Chris@117:           :zoom => zoom,
Chris@117:           :subject_width => subject_width,
Chris@117:           :g_width => g_width,
Chris@117:           :indent => 0,
Chris@117:           :indent_increment => 5,
Chris@117:           :top_increment => 5,
Chris@117:           :format => :pdf,
Chris@117:           :pdf => pdf
Chris@117:         }
Chris@117:         render(options)
chris@22:         pdf.Output
chris@22:       end
Chris@0:       
Chris@0:       private
Chris@117:       
Chris@117:       def coordinates(start_date, end_date, progress, zoom=nil)
Chris@117:         zoom ||= @zoom
Chris@117:         
Chris@117:         coords = {}
Chris@117:         if start_date && end_date && start_date < self.date_to && end_date > self.date_from
Chris@117:           if start_date > self.date_from
Chris@117:             coords[:start] = start_date - self.date_from
Chris@117:             coords[:bar_start] = start_date - self.date_from
Chris@117:           else
Chris@117:             coords[:bar_start] = 0
Chris@117:           end
Chris@117:           if end_date < self.date_to
Chris@117:             coords[:end] = end_date - self.date_from
Chris@117:             coords[:bar_end] = end_date - self.date_from + 1
Chris@117:           else
Chris@117:             coords[:bar_end] = self.date_to - self.date_from + 1
Chris@117:           end
Chris@117:         
Chris@117:           if progress
Chris@117:             progress_date = start_date + (end_date - start_date) * (progress / 100.0)
Chris@117:             if progress_date > self.date_from && progress_date > start_date
Chris@117:               if progress_date < self.date_to
Chris@117:                 coords[:bar_progress_end] = progress_date - self.date_from + 1
Chris@117:               else
Chris@117:                 coords[:bar_progress_end] = self.date_to - self.date_from + 1
Chris@117:               end
Chris@117:             end
Chris@117:             
Chris@117:             if progress_date < Date.today
Chris@117:               late_date = [Date.today, end_date].min
Chris@117:               if late_date > self.date_from && late_date > start_date
Chris@117:                 if late_date < self.date_to
Chris@117:                   coords[:bar_late_end] = late_date - self.date_from + 1
Chris@117:                 else
Chris@117:                   coords[:bar_late_end] = self.date_to - self.date_from + 1
Chris@117:                 end
Chris@117:               end
Chris@117:             end
Chris@117:           end
Chris@117:         end
Chris@117:         
Chris@117:         # Transforms dates into pixels witdh
Chris@117:         coords.keys.each do |key|
Chris@117:           coords[key] = (coords[key] * zoom).floor
Chris@117:         end
Chris@117:         coords
Chris@117:       end
chris@22: 
Chris@117:       # Sorts a collection of issues by start_date, due_date, id for gantt rendering
Chris@117:       def sort_issues!(issues)
Chris@117:         issues.sort! { |a, b| gantt_issue_compare(a, b, issues) }
Chris@117:       end
Chris@117:   
Chris@117:       # TODO: top level issues should be sorted by start date
Chris@117:       def gantt_issue_compare(x, y, issues)
Chris@117:         if x.root_id == y.root_id
Chris@117:           x.lft <=> y.lft
Chris@0:         else
Chris@117:           x.root_id <=> y.root_id
Chris@117:         end
Chris@117:       end
Chris@117:       
Chris@117:       def current_limit
Chris@117:         if @max_rows
Chris@117:           @max_rows - @number_of_rows
Chris@117:         else
Chris@117:           nil
Chris@117:         end
Chris@117:       end
Chris@117:       
Chris@117:       def abort?
Chris@117:         if @max_rows && @number_of_rows >= @max_rows
Chris@117:           @truncated = true
Chris@117:         end
Chris@117:       end
Chris@117:       
Chris@117:       def pdf_new_page?(options)
Chris@117:         if options[:top] > 180
Chris@117:           options[:pdf].Line(15, options[:top], PDF::TotalWidth, options[:top])
Chris@117:           options[:pdf].AddPage("L")
Chris@117:           options[:top] = 15
Chris@117:           options[:pdf].Line(15, options[:top] - 0.1, PDF::TotalWidth, options[:top] - 0.1)
Chris@117:         end
Chris@117:       end
Chris@117:       
Chris@117:       def html_subject(params, subject, options={})
Chris@117:         output = "<div class=' #{options[:css] }' style='position: absolute;line-height:1.2em;height:16px;top:#{params[:top]}px;left:#{params[:indent]}px;overflow:hidden;'>"
Chris@117:         output << subject
Chris@117:         output << "</div>"
Chris@117:         @subjects << output
Chris@117:         output
Chris@117:       end
Chris@117:       
Chris@117:       def pdf_subject(params, subject, options={})
Chris@117:         params[:pdf].SetY(params[:top])
Chris@117:         params[:pdf].SetX(15)
Chris@117:         
Chris@117:         char_limit = PDF::MaxCharactorsForSubject - params[:indent]
Chris@117:         params[:pdf].Cell(params[:subject_width]-15, 5, (" " * params[:indent]) +  subject.to_s.sub(/^(.{#{char_limit}}[^\s]*\s).*$/, '\1 (...)'), "LR")
Chris@117:       
Chris@117:         params[:pdf].SetY(params[:top])
Chris@117:         params[:pdf].SetX(params[:subject_width])
Chris@117:         params[:pdf].Cell(params[:g_width], 5, "", "LR")
Chris@117:       end
Chris@117:       
Chris@117:       def image_subject(params, subject, options={})
Chris@117:         params[:image].fill('black')
Chris@117:         params[:image].stroke('transparent')
Chris@117:         params[:image].stroke_width(1)
Chris@117:         params[:image].text(params[:indent], params[:top] + 2, subject)
Chris@117:       end
Chris@117:       
Chris@117:       def html_task(params, coords, options={})
Chris@117:         output = ''
Chris@117:         # Renders the task bar, with progress and late
Chris@117:         if coords[:bar_start] && coords[:bar_end]
Chris@117:           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>"
Chris@117:           
Chris@117:           if coords[:bar_late_end]
Chris@117:             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>"
Chris@0:           end
Chris@117:           if coords[:bar_progress_end]
Chris@117:             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>"
Chris@117:           end
Chris@117:         end
Chris@117:         # Renders the markers
Chris@117:         if options[:markers]
Chris@117:           if coords[:start]
Chris@117:             output << "<div style='top:#{ params[:top] }px;left:#{ coords[:start] }px;width:15px;' class='#{options[:css]} marker starting'>&nbsp;</div>"
Chris@117:           end
Chris@117:           if coords[:end]
Chris@117:             output << "<div style='top:#{ params[:top] }px;left:#{ coords[:end] + params[:zoom] }px;width:15px;' class='#{options[:css]} marker ending'>&nbsp;</div>"
Chris@117:           end
Chris@117:         end
Chris@117:         # Renders the label on the right
Chris@117:         if options[:label]
Chris@117:           output << "<div style='top:#{ params[:top] }px;left:#{ (coords[:bar_end] || 0) + 8 }px;' class='#{options[:css]} label'>"
Chris@117:           output << options[:label]
Chris@117:           output << "</div>"
Chris@117:         end
Chris@117:         # Renders the tooltip
Chris@117:         if options[:issue] && coords[:bar_start] && coords[:bar_end]
Chris@117:           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;'>"
Chris@117:           output << '<span class="tip">'
Chris@117:           output << view.render_issue_tooltip(options[:issue])
Chris@117:           output << "</span></div>"
Chris@117:         end
Chris@117:         @lines << output
Chris@117:         output
Chris@117:       end
Chris@117:       
Chris@117:       def pdf_task(params, coords, options={})
Chris@117:         height = options[:height] || 2
Chris@117:         
Chris@117:         # Renders the task bar, with progress and late
Chris@117:         if coords[:bar_start] && coords[:bar_end]
Chris@117:           params[:pdf].SetY(params[:top]+1.5)
Chris@117:           params[:pdf].SetX(params[:subject_width] + coords[:bar_start])
Chris@117:           params[:pdf].SetFillColor(200,200,200)
Chris@117:           params[:pdf].Cell(coords[:bar_end] - coords[:bar_start], height, "", 0, 0, "", 1)
Chris@117:             
Chris@117:           if coords[:bar_late_end]
Chris@117:             params[:pdf].SetY(params[:top]+1.5)
Chris@117:             params[:pdf].SetX(params[:subject_width] + coords[:bar_start])
Chris@117:             params[:pdf].SetFillColor(255,100,100)
Chris@117:             params[:pdf].Cell(coords[:bar_late_end] - coords[:bar_start], height, "", 0, 0, "", 1)
Chris@117:           end
Chris@117:           if coords[:bar_progress_end]
Chris@117:             params[:pdf].SetY(params[:top]+1.5)
Chris@117:             params[:pdf].SetX(params[:subject_width] + coords[:bar_start])
Chris@117:             params[:pdf].SetFillColor(90,200,90)
Chris@117:             params[:pdf].Cell(coords[:bar_progress_end] - coords[:bar_start], height, "", 0, 0, "", 1)
Chris@117:           end
Chris@117:         end
Chris@117:         # Renders the markers
Chris@117:         if options[:markers]
Chris@117:           if coords[:start]
Chris@117:             params[:pdf].SetY(params[:top] + 1)
Chris@117:             params[:pdf].SetX(params[:subject_width] + coords[:start] - 1)
Chris@117:             params[:pdf].SetFillColor(50,50,200)
Chris@117:             params[:pdf].Cell(2, 2, "", 0, 0, "", 1) 
Chris@117:           end
Chris@117:           if coords[:end]
Chris@117:             params[:pdf].SetY(params[:top] + 1)
Chris@117:             params[:pdf].SetX(params[:subject_width] + coords[:end] - 1)
Chris@117:             params[:pdf].SetFillColor(50,50,200)
Chris@117:             params[:pdf].Cell(2, 2, "", 0, 0, "", 1) 
Chris@117:           end
Chris@117:         end
Chris@117:         # Renders the label on the right
Chris@117:         if options[:label]
Chris@117:           params[:pdf].SetX(params[:subject_width] + (coords[:bar_end] || 0) + 5)
Chris@117:           params[:pdf].Cell(30, 2, options[:label])
Chris@0:         end
Chris@0:       end
chris@22: 
Chris@117:       def image_task(params, coords, options={})
Chris@117:         height = options[:height] || 6
Chris@117:         
Chris@117:         # Renders the task bar, with progress and late
Chris@117:         if coords[:bar_start] && coords[:bar_end]
Chris@117:           params[:image].fill('#aaa')
Chris@117:           params[:image].rectangle(params[:subject_width] + coords[:bar_start], params[:top], params[:subject_width] + coords[:bar_end], params[:top] - height)
Chris@117:  
Chris@117:           if coords[:bar_late_end]
Chris@117:             params[:image].fill('#f66')
Chris@117:             params[:image].rectangle(params[:subject_width] + coords[:bar_start], params[:top], params[:subject_width] + coords[:bar_late_end], params[:top] - height)
Chris@117:           end
Chris@117:           if coords[:bar_progress_end]
Chris@117:             params[:image].fill('#00c600')
Chris@117:             params[:image].rectangle(params[:subject_width] + coords[:bar_start], params[:top], params[:subject_width] + coords[:bar_progress_end], params[:top] - height)
Chris@117:           end
Chris@117:         end
Chris@117:         # Renders the markers
Chris@117:         if options[:markers]
Chris@117:           if coords[:start]
Chris@117:             x = params[:subject_width] + coords[:start]
Chris@117:             y = params[:top] - height / 2
Chris@117:             params[:image].fill('blue')
Chris@117:             params[:image].polygon(x-4, y, x, y-4, x+4, y, x, y+4)
Chris@117:           end
Chris@117:           if coords[:end]
Chris@117:             x = params[:subject_width] + coords[:end] + params[:zoom]
Chris@117:             y = params[:top] - height / 2
Chris@117:             params[:image].fill('blue')
Chris@117:             params[:image].polygon(x-4, y, x, y-4, x+4, y, x, y+4)
Chris@117:           end
Chris@117:         end
Chris@117:         # Renders the label on the right
Chris@117:         if options[:label]
Chris@117:           params[:image].fill('black')
Chris@117:           params[:image].text(params[:subject_width] + (coords[:bar_end] || 0) + 5,params[:top] + 1, options[:label])
Chris@117:         end
Chris@117:       end
Chris@0:     end
Chris@0:   end
Chris@0: end