# Redmine - project management software
# Copyright (C) 2006-2008 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.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
module Redmine
module Helpers
# Simple class to handle gantt chart data
class Gantt
include ERB::Util
include Redmine::I18n
# :nodoc:
# Some utility methods for the PDF export
class PDF
MaxCharactorsForSubject = 45
TotalWidth = 280
LeftPaneWidth = 100
def self.right_pane_width
TotalWidth - LeftPaneWidth
end
end
attr_reader :year_from, :month_from, :date_from, :date_to, :zoom, :months, :truncated, :max_rows
attr_accessor :query
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
@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
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 })
end
def params_previous
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 })
end
### Extracted from the HTML view/helpers
# 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 = if @project
number_of_rows_on_project(@project)
else
Project.roots.visible.has_module('issue_tracking').inject(0) do |total, project|
total += number_of_rows_on_project(project)
end
end
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)
# Remove the project requirement for Versions because it will
# restrict issues to only be on the current project. This
# ends up missing issues which are assigned to shared versions.
@query.project = nil if @query.project
# One Root project
count = 1
# Issues without a Version
count += project.issues.for_gantt.without_version.with_query(@query).count
# Versions
count += project.versions.count
# Issues on the Versions
project.versions.each do |version|
count += version.fixed_issues.for_gantt.with_query(@query).count
end
# Subprojects
project.children.visible.has_module('issue_tracking').each do |subproject|
count += number_of_rows_on_project(subproject)
end
count
end
# Renders the subjects of the Gantt chart, the left side.
def subjects(options={})
render(options.merge(:only => :subjects)) unless @subjects_rendered
@subjects
end
# Renders the lines of the Gantt chart, the right side
def lines(options={})
render(options.merge(:only => :lines)) unless @lines_rendered
@lines
end
def render(options={})
options = {:indent => 4, :render => :subject, :format => :html}.merge(options)
@subjects = '' unless options[:only] == :lines
@lines = '' unless options[:only] == :subjects
@number_of_rows = 0
if @project
render_project(@project, options)
else
Project.roots.visible.has_module('issue_tracking').each do |project|
render_project(project, options)
break if abort?
end
end
@subjects_rendered = true unless options[:only] == :lines
@lines_rendered = true unless options[:only] == :subjects
render_end(options)
end
def render_project(project, options={})
options[:top] = 0 unless options.key? :top
options[:indent_increment] = 20 unless options.key? :indent_increment
options[:top_increment] = 20 unless options.key? :top_increment
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?
# Second, Issues without a version
issues = project.issues.for_gantt.without_version.with_query(@query).all(:limit => current_limit)
sort_issues!(issues)
if issues
render_issues(issues, options)
return if abort?
end
# Third, Versions
project.versions.sort.each do |version|
render_version(version, options)
return if abort?
end
# Fourth, subprojects
project.children.visible.has_module('issue_tracking').each do |project|
render_project(project, options)
return if abort?
end unless project.leaf?
# 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(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?
# Remove the project requirement for Versions because it will
# restrict issues to only be on the current project. This
# ends up missing issues which are assigned to shared versions.
@query.project = nil if @query.project
issues = version.fixed_issues.for_gantt.with_query(@query).all(:limit => current_limit)
if issues
sort_issues!(issues)
# Indent issues
options[:indent] += options[:indent_increment]
render_issues(issues, options)
options[:indent] -= options[:indent_increment]
end
end
def render_end(options={})
case options[:format]
when :pdf
options[:pdf].Line(15, options[:top], PDF::TotalWidth, options[:top])
end
end
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
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
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
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
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)
end
subject << view.link_to_issue(issue)
subject << '</span>'
html_subject(options, subject, :css => "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 }%"
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
# Generates a gantt image
# Only defined if RMagick is avalaible
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 if Object.const_defined?(:Magick)
def to_pdf
pdf = ::Redmine::Export::PDF::IFPDF.new(current_language)
pdf.SetTitle("#{l(:label_gantt)} #{project}")
pdf.AliasNbPages
pdf.footer_date = format_date(Date.today)
pdf.AddPage("L")
pdf.SetFontStyle('B',12)
pdf.SetX(15)
pdf.Cell(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.Cell(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.Cell(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.Cell(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.Cell(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.Cell(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
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
else
coords[:bar_start] = 0
end
if end_date < self.date_to
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) * (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 + 1
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
else
coords[:bar_late_end] = self.date_to - 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) }
end
# TODO: top level issues should be sorted by start date
def gantt_issue_compare(x, y, issues)
if x.root_id == y.root_id
x.lft <=> y.lft
else
x.root_id <=> y.root_id
end
end
def current_limit
if @max_rows
@max_rows - @number_of_rows
else
nil
end
end
def abort?
if @max_rows && @number_of_rows >= @max_rows
@truncated = true
end
end
def pdf_new_page?(options)
if options[:top] > 180
options[:pdf].Line(15, options[:top], PDF::TotalWidth, options[:top])
options[:pdf].AddPage("L")
options[:top] = 15
options[:pdf].Line(15, options[:top] - 0.1, PDF::TotalWidth, options[:top] - 0.1)
end
end
def html_subject(params, subject, options={})
output = "<div class=' #{options[:css] }' style='position: absolute;line-height:1.2em;height:16px;top:#{params[:top]}px;left:#{params[:indent]}px;overflow:hidden;'>"
output << subject
output << "</div>"
@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].Cell(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].Cell(params[:g_width], 5, "", "LR")
end
def image_subject(params, subject, options={})
params[:image].fill('black')
params[:image].stroke('transparent')
params[:image].stroke_width(1)
params[:image].text(params[:indent], params[:top] + 2, subject)
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'> </div>"
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'> </div>"
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'> </div>"
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'> </div>"
end
if coords[:end]
output << "<div style='top:#{ params[:top] }px;left:#{ coords[:end] + params[:zoom] }px;width:15px;' class='#{options[:css]} marker ending'> </div>"
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'>"
output << options[:label]
output << "</div>"
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;'>"
output << '<span class="tip">'
output << view.render_issue_tooltip(options[:issue])
output << "</span></div>"
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].SetX(params[:subject_width] + coords[:bar_start])
params[:pdf].SetFillColor(200,200,200)
params[:pdf].Cell(coords[:bar_end] - coords[:bar_start], height, "", 0, 0, "", 1)
if coords[:bar_late_end]
params[:pdf].SetY(params[:top]+1.5)
params[:pdf].SetX(params[:subject_width] + coords[:bar_start])
params[:pdf].SetFillColor(255,100,100)
params[:pdf].Cell(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].SetX(params[:subject_width] + coords[:bar_start])
params[:pdf].SetFillColor(90,200,90)
params[:pdf].Cell(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].Cell(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].Cell(2, 2, "", 0, 0, "", 1)
end
end
# Renders the label on the right
if options[:label]
params[:pdf].SetX(params[:subject_width] + (coords[:bar_end] || 0) + 5)
params[:pdf].Cell(30, 2, 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)
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)
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)
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)
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)
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])
end
end
end
end
end