Class: Redmine::Helpers::Gantt

Inherits:
Object
  • Object
show all
Includes:
ERB::Util, I18n
Defined in:
lib/redmine/helpers/gantt.rb

Overview

Simple class to handle gantt chart data

Defined Under Namespace

Classes: PDF

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from I18n

#current_language, #day_name, #find_language, #format_date, #format_time, included, #l, #l_hours, #l_or_humanize, #ll, #month_name, #set_language_if_valid, #valid_languages

Constructor Details

#initialize(options = {}) ⇒ Gantt

Returns a new instance of Gantt


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# File 'lib/redmine/helpers/gantt.rb', line 39

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
      @month_from = 1
    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]))
    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
  end
end

Instance Attribute Details

#date_fromObject (readonly)

Returns the value of attribute date_from


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# File 'lib/redmine/helpers/gantt.rb', line 34

def date_from
  @date_from
end

#date_toObject (readonly)

Returns the value of attribute date_to


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# File 'lib/redmine/helpers/gantt.rb', line 34

def date_to
  @date_to
end

#max_rowsObject (readonly)

Returns the value of attribute max_rows


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# File 'lib/redmine/helpers/gantt.rb', line 34

def max_rows
  @max_rows
end

#month_fromObject (readonly)

Returns the value of attribute month_from


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# File 'lib/redmine/helpers/gantt.rb', line 34

def month_from
  @month_from
end

#monthsObject (readonly)

Returns the value of attribute months


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# File 'lib/redmine/helpers/gantt.rb', line 34

def months
  @months
end

#projectObject

Returns the value of attribute project


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# File 'lib/redmine/helpers/gantt.rb', line 36

def project
  @project
end

#queryObject

Returns the value of attribute query


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# File 'lib/redmine/helpers/gantt.rb', line 35

def query
  @query
end

#truncatedObject (readonly)

Returns the value of attribute truncated


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# File 'lib/redmine/helpers/gantt.rb', line 34

def truncated
  @truncated
end

#viewObject

Returns the value of attribute view


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# File 'lib/redmine/helpers/gantt.rb', line 37

def view
  @view
end

#year_fromObject (readonly)

Returns the value of attribute year_from


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# File 'lib/redmine/helpers/gantt.rb', line 34

def year_from
  @year_from
end

#zoomObject (readonly)

Returns the value of attribute zoom


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# File 'lib/redmine/helpers/gantt.rb', line 34

def zoom
  @zoom
end

Instance Method Details

#common_paramsObject


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# File 'lib/redmine/helpers/gantt.rb', line 82

def common_params
  { :controller => 'gantts', :action => 'show', :project_id => @project }
end

#issuesObject

Returns issues that will be rendered


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# File 'lib/redmine/helpers/gantt.rb', line 134

def issues
  @issues ||= @query.issues(
    :include => [:assigned_to, :tracker, :priority, :category, :fixed_version],
    :order => "#{Project.table_name}.lft ASC, #{Issue.table_name}.id ASC",
    :limit => @max_rows
  )
end

#line_for_issue(issue, options) ⇒ Object


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# File 'lib/redmine/helpers/gantt.rb', line 374

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 }%"

    case options[:format]
    when :html
      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
  else
    ActiveRecord::Base.logger.debug "GanttHelper#line_for_issue was not given an issue with a due_before"
    ''
  end
end

#line_for_project(project, options) ⇒ Object


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# File 'lib/redmine/helpers/gantt.rb', line 276

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)
    when :pdf
      pdf_task(options, coords, :label => label, :markers => true, :height => 0.8)
    end
  else
    ActiveRecord::Base.logger.debug "Gantt#line_for_project was not given a project with a start_date"
    ''
  end
end

#line_for_version(version, options) ⇒ Object


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# File 'lib/redmine/helpers/gantt.rb', line 314

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}%"
    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)
    when :pdf
      pdf_task(options, coords, :label => label, :markers => true, :height => 0.8)
    end
  else
    ActiveRecord::Base.logger.debug "Gantt#line_for_version was not given a version with a start_date"
    ''
  end
end

#lines(options = {}) ⇒ Object

Renders the lines of the Gantt chart, the right side


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# File 'lib/redmine/helpers/gantt.rb', line 128

def lines(options={})
  render(options.merge(:only => :lines)) unless @lines_rendered
  @lines
end

#number_of_rowsObject

Returns the number of rows that will be rendered on the Gantt chart


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# File 'lib/redmine/helpers/gantt.rb', line 99

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)}

  if @max_rows.present?
    rows > @max_rows ? @max_rows : rows
  else
    rows
  end
end

#number_of_rows_on_project(project) ⇒ Object

Returns the number of rows that will be used to list a project on the Gantt chart. This will recurse for each subproject.


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# File 'lib/redmine/helpers/gantt.rb', line 113

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

#paramsObject


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# File 'lib/redmine/helpers/gantt.rb', line 86

def params
  common_params.merge({  :zoom => zoom, :year => year_from, :month => month_from, :months => months })
end

#params_nextObject


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# File 'lib/redmine/helpers/gantt.rb', line 94

def params_next
  common_params.merge({:year => (date_from >> months).year, :month => (date_from >> months).month, :zoom => zoom, :months => months })
end

#params_previousObject


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# File 'lib/redmine/helpers/gantt.rb', line 90

def params_previous
  common_params.merge({:year => (date_from << months).year, :month => (date_from << months).month, :zoom => zoom, :months => months })
end

#project_issues(project) ⇒ Object

Returns the issues that belong to project


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# File 'lib/redmine/helpers/gantt.rb', line 160

def project_issues(project)
  @issues_by_project ||= issues.group_by(&:project)
  @issues_by_project[project] || []
end

#project_versions(project) ⇒ Object

Returns the distinct versions of the issues that belong to project


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# File 'lib/redmine/helpers/gantt.rb', line 166

def project_versions(project)
  project_issues(project).collect(&:fixed_version).compact.uniq
end

#projectsObject

Return all the project nodes that will be displayed


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# File 'lib/redmine/helpers/gantt.rb', line 143

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",
      :conditions => ["child.id IN (?)", ids],
      :order => "#{Project.table_name}.lft ASC"
    ).uniq
  else
    @projects = []
  end
end

#render(options = {}) ⇒ Object


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# File 'lib/redmine/helpers/gantt.rb', line 175

def render(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

#render_end(options = {}) ⇒ Object


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# File 'lib/redmine/helpers/gantt.rb', line 254

def render_end(options={})
  case options[:format]
  when :pdf
    options[:pdf].Line(15, options[:top], PDF::TotalWidth, options[:top])
  end
end

#render_issues(issues, options = {}) ⇒ Object


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# File 'lib/redmine/helpers/gantt.rb', line 220

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

#render_project(project, options = {}) ⇒ Object


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# File 'lib/redmine/helpers/gantt.rb', line 195

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

#render_version(project, version, options = {}) ⇒ Object


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# File 'lib/redmine/helpers/gantt.rb', line 235

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]
    render_issues(issues, options)
    options[:indent] -= options[:indent_increment]
  end
end

#subject_for_issue(issue, options) ⇒ Object


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# File 'lib/redmine/helpers/gantt.rb', line 338

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}'>"
    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
    end
    subject << view.link_to_issue(issue)
    subject << '</span>'
    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

#subject_for_project(project, options) ⇒ Object


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# File 'lib/redmine/helpers/gantt.rb', line 261

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

#subject_for_version(version, options) ⇒ Object


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# File 'lib/redmine/helpers/gantt.rb', line 299

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' : ''}'>"
    subject << view.link_to_version(version)
    subject << '</span>'
    html_subject(options, subject, :css => "version-name")
  when :image
    image_subject(options, version.to_s_with_project)
  when :pdf
    pdf_new_page?(options)
    pdf_subject(options, version.to_s_with_project)
  end
end

#subjects(options = {}) ⇒ Object

Renders the subjects of the Gantt chart, the left side.


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# File 'lib/redmine/helpers/gantt.rb', line 122

def subjects(options={})
  render(options.merge(:only => :subjects)) unless @subjects_rendered
  @subjects
end

#to_image(format = 'PNG') ⇒ Object


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# File 'lib/redmine/helpers/gantt.rb', line 396

def to_image(format='PNG')
  date_to = (@date_from >> @months)-1
  show_weeks = @zoom > 1
  show_days = @zoom > 2

  subject_width = 400
  header_heigth = 18
  # width of one day in pixels
  zoom = @zoom*2
  g_width = (@date_to - @date_from + 1)*zoom
  g_height = 20 * number_of_rows + 30
  headers_heigth = (show_weeks ? 2*header_heigth : header_heigth)
  height = g_height + headers_heigth

  imgl = Magick::ImageList.new
  imgl.new_image(subject_width+g_width+1, height)
  gc = Magick::Draw.new

  # Subjects
  gc.stroke('transparent')
  subjects(:image => gc, :top => (headers_heigth + 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.fill('white')
    gc.stroke('grey')
    gc.stroke_width(1)
    gc.rectangle(left, 0, left + width, height)
    gc.fill('black')
    gc.stroke('transparent')
    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_heigth
  	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_heigth, left + width, 2*header_heigth + 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_heigth, left.round + width, 2*header_heigth + g_height-1)
          gc.fill('black')
          gc.stroke('transparent')
          gc.stroke_width(1)
          gc.text(left.round + 2, header_heigth + 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_heigth - 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_heigth, left + width, 2*header_heigth + 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_heigth)
  gc.stroke('black')
  gc.rectangle(0, 0, subject_width+g_width, g_height+ headers_heigth-1)

  # content
  top = headers_heigth + 20

  gc.stroke('transparent')
  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_heigth, x, headers_heigth + g_height-1)
  end

  gc.draw(imgl)
  imgl.format = format
  imgl.to_blob
end

#to_pdfObject


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# File 'lib/redmine/helpers/gantt.rb', line 510

def to_pdf
  if ( current_language.to_s.downcase == 'ko'    ||
       current_language.to_s.downcase == 'ja'    ||
       current_language.to_s.downcase == 'zh'    ||
       current_language.to_s.downcase == 'zh-tw' ||
       current_language.to_s.downcase == 'th'    )
    pdf = ::Redmine::Export::PDF::IFPDF.new(current_language)
  else
    pdf = ::Redmine::Export::PDF::ITCPDF.new(current_language)
  end
  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.SetX(15)
  pdf.RDMCell(PDF::LeftPaneWidth, 20, project.to_s)
  pdf.Ln
  pdf.SetFontStyle('B',9)

  subject_width = PDF::LeftPaneWidth
  header_heigth = 5

  headers_heigth = header_heigth
  show_weeks = false
  show_days = false

  if self.months < 7
    show_weeks = true
    headers_heigth = 2*header_heigth
    if self.months < 3
      show_days = true
      headers_heigth = 3*header_heigth
    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_heigth

  y_start = pdf.GetY

  # Months headers
  month_f = self.date_from
  left = subject_width
  height = header_heigth
  self.months.times do
    width = ((month_f >> 1) - month_f) * zoom
    pdf.SetY(y_start)
    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_heigth
    if self.date_from.cwday == 1
      # self.date_from is monday
      week_f = self.date_from
    else
      # find next monday after self.date_from
      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_heigth)
      pdf.SetX(left)
      pdf.RDMCell(width + 1, height, "", "LTR")
      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_heigth)
      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

  # Days headers
  if show_days
    left = subject_width
    height = header_heigth
    wday = self.date_from.cwday
    pdf.SetFontStyle('B',7)
    (self.date_to - self.date_from + 1).to_i.times do
      width = zoom
      pdf.SetY(y_start + 2 * header_heigth)
      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_heigth, "", 1)

  # Tasks
  top = headers_heigth + y_start
  options = {
    :top => top,
    :zoom => zoom,
    :subject_width => subject_width,
    :g_width => g_width,
    :indent => 0,
    :indent_increment => 5,
    :top_increment => 5,
    :format => :pdf,
    :pdf => pdf
  }
  render(options)
  pdf.Output
end

#version_issues(project, version) ⇒ Object

Returns the issues that belong to project and are assigned to version


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# File 'lib/redmine/helpers/gantt.rb', line 171

def version_issues(project, version)
  project_issues(project).select {|issue| issue.fixed_version == version}
end