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@@ -25,4 +25,154 @@ module ProjectsHelper |
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:anchor => version.name |
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}, options |
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end |
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# Generates a gantt image |
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# Only defined if RMagick is avalaible |
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def gantt_image(events, date_from, months, zoom) |
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date_to = (date_from >> months)-1 |
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show_weeks = zoom > 1 |
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show_days = zoom > 2 |
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subject_width = 320 |
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header_heigth = 18 |
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# width of one day in pixels |
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zoom = zoom*2 |
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g_width = (date_to - date_from + 1)*zoom |
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g_height = 20 * events.length + 20 |
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headers_heigth = (show_weeks ? 2*header_heigth : header_heigth) |
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height = g_height + headers_heigth |
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imgl = Magick::ImageList.new |
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imgl.new_image(subject_width+g_width+1, height) |
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gc = Magick::Draw.new |
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# Subjects |
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top = headers_heigth + 20 |
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gc.fill('black') |
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gc.stroke('transparent') |
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gc.stroke_width(1) |
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events.each do |i| |
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gc.text(4, top + 2, (i.is_a?(Issue) ? i.subject : i.name)) |
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top = top + 20 |
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end |
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# Months headers |
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month_f = date_from |
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left = subject_width |
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months.times do |
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width = ((month_f >> 1) - month_f) * zoom |
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gc.fill('white') |
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gc.stroke('grey') |
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gc.stroke_width(1) |
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gc.rectangle(left, 0, left + width, height) |
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gc.fill('black') |
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gc.stroke('transparent') |
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gc.stroke_width(1) |
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gc.text(left.round + 8, 14, "#{month_f.year}-#{month_f.month}") |
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left = left + width |
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month_f = month_f >> 1 |
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end |
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# Weeks headers |
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if show_weeks |
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left = subject_width |
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height = header_heigth |
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if date_from.cwday == 1 |
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# date_from is monday |
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week_f = date_from |
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else |
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# find next monday after date_from |
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week_f = date_from + (7 - date_from.cwday + 1) |
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width = (7 - date_from.cwday + 1) * zoom |
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gc.fill('white') |
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gc.stroke('grey') |
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gc.stroke_width(1) |
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gc.rectangle(left, header_heigth, left + width, 2*header_heigth + g_height-1) |
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left = left + width |
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end |
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while week_f <= date_to |
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width = (week_f + 6 <= date_to) ? 7 * zoom : (date_to - week_f + 1) * zoom |
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gc.fill('white') |
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gc.stroke('grey') |
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gc.stroke_width(1) |
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gc.rectangle(left.round, header_heigth, left.round + width, 2*header_heigth + g_height-1) |
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gc.fill('black') |
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gc.stroke('transparent') |
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gc.stroke_width(1) |
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gc.text(left.round + 2, header_heigth + 14, week_f.cweek.to_s) |
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left = left + width |
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week_f = week_f+7 |
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end |
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end |
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# Days details (week-end in grey) |
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if show_days |
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left = subject_width |
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height = g_height + header_heigth - 1 |
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wday = date_from.cwday |
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(date_to - date_from + 1).to_i.times do |
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width = zoom |
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gc.fill(wday == 6 || wday == 7 ? '#eee' : 'white') |
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gc.stroke('grey') |
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gc.stroke_width(1) |
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gc.rectangle(left, 2*header_heigth, left + width, 2*header_heigth + g_height-1) |
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left = left + width |
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wday = wday + 1 |
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wday = 1 if wday > 7 |
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end |
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end |
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# border |
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gc.fill('transparent') |
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gc.stroke('grey') |
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gc.stroke_width(1) |
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gc.rectangle(0, 0, subject_width+g_width, headers_heigth) |
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gc.stroke('black') |
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gc.rectangle(0, 0, subject_width+g_width, g_height+ headers_heigth-1) |
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# content |
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top = headers_heigth + 20 |
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gc.stroke('transparent') |
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events.each do |i| |
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if i.is_a?(Issue) |
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i_start_date = (i.start_date >= date_from ? i.start_date : date_from ) |
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i_end_date = (i.due_date <= date_to ? i.due_date : date_to ) |
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i_done_date = i.start_date + ((i.due_date - i.start_date+1)*i.done_ratio/100).floor |
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i_done_date = (i_done_date <= date_from ? date_from : i_done_date ) |
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i_done_date = (i_done_date >= date_to ? date_to : i_done_date ) |
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i_late_date = [i_end_date, Date.today].min if i_start_date < Date.today |
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i_left = subject_width + ((i_start_date - date_from)*zoom).floor |
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i_width = ((i_end_date - i_start_date + 1)*zoom).floor # total width of the issue |
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d_width = ((i_done_date - i_start_date)*zoom).floor # done width |
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l_width = i_late_date ? ((i_late_date - i_start_date+1)*zoom).floor : 0 # delay width |
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gc.fill('grey') |
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gc.rectangle(i_left, top, i_left + i_width, top - 6) |
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gc.fill('red') |
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gc.rectangle(i_left, top, i_left + l_width, top - 6) if l_width > 0 |
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gc.fill('blue') |
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gc.rectangle(i_left, top, i_left + d_width, top - 6) if d_width > 0 |
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gc.fill('black') |
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gc.text(i_left + i_width + 5,top + 1, "#{i.status.name} #{i.done_ratio}%") |
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else |
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i_left = subject_width + ((i.start_date - date_from)*zoom).floor |
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gc.fill('green') |
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gc.rectangle(i_left, top, i_left + 6, top - 6) |
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gc.fill('black') |
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gc.text(i_left + 11, top + 1, i.name) |
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end |
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top = top + 20 |
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end |
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# today red line |
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if Date.today >= @date_from and Date.today <= @date_to |
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gc.stroke('red') |
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x = (Date.today-@date_from+1)*zoom + subject_width |
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gc.line(x, headers_heigth, x, headers_heigth + g_height-1) |
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end |
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gc.draw(imgl) |
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imgl |
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end if Object.const_defined?(:Magick) |
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end |