SoundSoftware Code Site

        case Setting.start_of_week.to_i

        when 1

          @first_dow ||= (1 - 1)%7 + 1

        when 7

          @first_dow ||= (7 - 1)%7 + 1

        else

# Redmine - project management software

#

# 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.

      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 ||= Date.today.month

          @year_from ||= Date.today.year

        end

        zoom = (options[:zoom] || User.current.pref[:gantt_zoom]).to_i

        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]

      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

      # 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 > @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)

        count = 1

        count

      end

        render(options.merge(:only => :lines)) unless @lines_rendered

        @lines

      end

      def render(options={})

        @subjects = '' unless options[:only] == :lines

        @lines = '' unless options[:only] == :subjects

        @number_of_rows = 0

        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?

        sort_issues!(issues)

        if issues

          render_issues(issues, options)

          return if abort?

        end

        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

        # 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?

        if issues

          sort_issues!(issues)

          # Indent issues

          options[:indent] -= options[:indent_increment]

        end

      end

      def render_end(options={})

        case options[:format]

          options[:pdf].Line(15, options[:top], PDF::TotalWidth, options[:top])

        end

      end

        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)

        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

          @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

          @issue_ancestors << issue

          options[:indent] += options[:indent_increment]

        end

        output

      end

        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?)

      # Generates a gantt image

      # Only defined if RMagick is avalaible

      def to_image(format='PNG')

        show_weeks = @zoom > 1

        show_days = @zoom > 2

        subject_width = 400

        # width of one day in pixels

        zoom = @zoom*2

        g_width = (@date_to - @date_from + 1)*zoom

        g_height = 20 * number_of_rows + 30

        imgl = Magick::ImageList.new

        imgl.new_image(subject_width+g_width+1, height)

        gc = Magick::Draw.new

        # Subjects

        gc.stroke('transparent')

        # Months headers

        month_f = @date_from

        left = subject_width

          width = ((month_f >> 1) - month_f) * zoom

          gc.fill('white')

          gc.stroke('grey')

          left = left + width

          month_f = month_f >> 1

        end

        # Weeks headers

        if show_weeks

        	left = subject_width

        	if @date_from.cwday == 1

        	    # date_from is monday

                week_f = date_from

                gc.fill('white')

                gc.stroke('grey')

                gc.stroke_width(1)

        		left = left + width

        	end

        	while week_f <= date_to

                gc.fill('white')

                gc.stroke('grey')

                gc.stroke_width(1)

                gc.fill('black')

                gc.stroke('transparent')

                gc.stroke_width(1)

        		left = left + width

        		week_f = week_f+7

        	end

        end

        # Days details (week-end in grey)

        if show_days

        	left = subject_width

        	wday = @date_from.cwday

              width =  zoom

              gc.fill(wday == 6 || wday == 7 ? '#eee' : 'white')

              gc.stroke('#ddd')

              gc.stroke_width(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.stroke('black')

        # content

        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.draw(imgl)

        imgl.format = format

        imgl.to_blob

      end if Object.const_defined?(:Magick)

      def to_pdf

        pdf.SetTitle("#{l(:label_gantt)} #{project}")

        pdf.footer_date = format_date(Date.today)

        pdf.AddPage("L")

        pdf.SetFontStyle('B',12)

        pdf.SetX(15)

        pdf.Ln

        pdf.SetFontStyle('B',9)

        subject_width = PDF::LeftPaneWidth

        show_weeks = false

        show_days = false

        if self.months < 7

          show_weeks = true

          if self.months < 3

            show_days = true

          end

        end

        g_width = PDF.right_pane_width

        zoom = (g_width) / (self.date_to - self.date_from + 1)

        g_height = 120

        y_start = pdf.GetY

        # Months headers

        month_f = self.date_from

        left = subject_width

          pdf.SetY(y_start)

          pdf.SetX(left)

          left = left + width

          month_f = month_f >> 1

        # Weeks headers

        if show_weeks

          left = subject_width

          if self.date_from.cwday == 1

            # self.date_from is monday

            week_f = self.date_from

            # 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.SetX(left)

            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.SetX(left)

            left = left + width

            week_f = week_f+7

          end

        end

        # Days headers

        if show_days

          left = subject_width

          wday = self.date_from.cwday

          pdf.SetFontStyle('B',7)

            width = zoom

            pdf.SetX(left)

            left = left + width

            wday = wday + 1

            wday = 1 if wday > 7

          end

        end

        pdf.SetY(y_start)

        pdf.SetX(15)

        # Tasks

        options = {

          :top => top,

          :zoom => zoom,

        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

          else

            coords[:bar_end] = self.date_to - self.date_from + 1

          end

          if progress

            if progress_date > self.date_from && progress_date > start_date

              if progress_date < self.date_to

              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

            end

          end

        end

        # Transforms dates into pixels witdh

        coords.keys.each do |key|

          coords[key] = (coords[key] * zoom).floor

      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.root_id <=> y.root_id

        end

      end

      def current_limit

        if @max_rows

          @max_rows - @number_of_rows

          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].Line(15, options[:top] - 0.1, PDF::TotalWidth, options[:top] - 0.1)

        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]

        @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].SetY(params[:top])

        params[:pdf].SetX(params[:subject_width])

      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'>&nbsp;</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'>&nbsp;</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)

          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)

          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)

          end

        end

        # Renders the markers

            params[:pdf].SetY(params[:top] + 1)

            params[:pdf].SetX(params[:subject_width] + coords[:start] - 1)

            params[:pdf].SetFillColor(50,50,200)

          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)

          end

        end

        # Renders the label on the right

        if options[:label]

          params[:pdf].SetX(params[:subject_width] + (coords[:bar_end] || 0) + 5)

        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)