jro_apps/redmine Commit - r3771:701d2eaeacdf

1

# Redmine - project management software

1

# Redmine - project management software

2

3

#

3

#

4

# This program is free software; you can redistribute it and/or

4

# This program is free software; you can redistribute it and/or

5

# modify it under the terms of the GNU General Public License

5

# modify it under the terms of the GNU General Public License

6

# as published by the Free Software Foundation; either version 2

6

# as published by the Free Software Foundation; either version 2

7

# of the License, or (at your option) any later version.

7

# of the License, or (at your option) any later version.

8

#

8

#

9

# This program is distributed in the hope that it will be useful,

9

# This program is distributed in the hope that it will be useful,

10

# but WITHOUT ANY WARRANTY; without even the implied warranty of

10

# but WITHOUT ANY WARRANTY; without even the implied warranty of

11

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

11

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

12

# GNU General Public License for more details.

12

# GNU General Public License for more details.

13

#

13

#

14

# You should have received a copy of the GNU General Public License

14

# You should have received a copy of the GNU General Public License

15

# along with this program; if not, write to the Free Software

15

# along with this program; if not, write to the Free Software

16

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

16

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

17

18

module Redmine

18

module Redmine

19

module Helpers

19

module Helpers

20

# Simple class to handle gantt chart data

20

# Simple class to handle gantt chart data

21

class Gantt

21

class Gantt

22

attr_reader :year_from, :month_from, :date_from, :date_to, :zoom, :months, :events

22

attr_reader :year_from, :month_from, :date_from, :date_to, :zoom, :months, :events

23

24

def initialize(options={})

24

def initialize(options={})

25

options = options.dup

25

options = options.dup

26

@events = []

26

@events = []

27

28

if options[:year] && options[:year].to_i >0

28

if options[:year] && options[:year].to_i >0

29

@year_from = options[:year].to_i

29

@year_from = options[:year].to_i

30

if options[:month] && options[:month].to_i >=1 && options[:month].to_i <= 12

30

if options[:month] && options[:month].to_i >=1 && options[:month].to_i <= 12

31

@month_from = options[:month].to_i

31

@month_from = options[:month].to_i

32

else

32

else

33

@month_from = 1

33

@month_from = 1

34

end

34

end

35

else

35

else

36

@month_from ||= Date.today.month

36

@month_from ||= Date.today.month

37

@year_from ||= Date.today.year

37

@year_from ||= Date.today.year

38

end

38

end

39

40

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

40

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

41

@zoom = (zoom > 0 && zoom < 5) ? zoom : 2

41

@zoom = (zoom > 0 && zoom < 5) ? zoom : 2

42

months = (options[:months] || User.current.pref[:gantt_months]).to_i

42

months = (options[:months] || User.current.pref[:gantt_months]).to_i

43

@months = (months > 0 && months < 25) ? months : 6

43

@months = (months > 0 && months < 25) ? months : 6

44

45

# Save gantt parameters as user preference (zoom and months count)

45

# Save gantt parameters as user preference (zoom and months count)

46

if (User.current.logged? && (@zoom != User.current.pref[:gantt_zoom] || @months != User.current.pref[:gantt_months]))

46

if (User.current.logged? && (@zoom != User.current.pref[:gantt_zoom] || @months != User.current.pref[:gantt_months]))

47

User.current.pref[:gantt_zoom], User.current.pref[:gantt_months] = @zoom, @months

47

User.current.pref[:gantt_zoom], User.current.pref[:gantt_months] = @zoom, @months

48

User.current.preference.save

48

User.current.preference.save

49

end

49

end

50

51

@date_from = Date.civil(@year_from, @month_from, 1)

51

@date_from = Date.civil(@year_from, @month_from, 1)

52

@date_to = (@date_from >> @months) - 1

52

@date_to = (@date_from >> @months) - 1

53

end

53

end

54

55

56

def events=(e)

56

def events=(e)

57

@events = e

57

@events = e

58

# Adds all ancestors

58

# Adds all ancestors

59

root_ids = e.select {|i| i.is_a?(Issue) && i.parent_id? }.collect(&:root_id).uniq

59

root_ids = e.select {|i| i.is_a?(Issue) && i.parent_id? }.collect(&:root_id).uniq

60

if root_ids.any?

60

if root_ids.any?

61

# Retrieves all nodes

61

# Retrieves all nodes

62

parents = Issue.find_all_by_root_id(root_ids, :conditions => ["rgt - lft > 1"])

62

parents = Issue.find_all_by_root_id(root_ids, :conditions => ["rgt - lft > 1"])

63

# Only add ancestors

63

# Only add ancestors

64

@events += parents.select {|p| @events.detect {|i| i.is_a?(Issue) && p.is_ancestor_of?(i)}}

64

@events += parents.select {|p| @events.detect {|i| i.is_a?(Issue) && p.is_ancestor_of?(i)}}

65

end

65

end

66

@events.uniq!

66

@events.uniq!

67

# Sort issues by hierarchy and start dates

67

# Sort issues by hierarchy and start dates

68

@events.sort! {|x,y|

68

@events.sort! {|x,y|

69

if x.is_a?(Issue) && y.is_a?(Issue)

69

if x.is_a?(Issue) && y.is_a?(Issue)

70

gantt_issue_compare(x, y, @events)

70

gantt_issue_compare(x, y, @events)

71

else

71

else

72

gantt_start_compare(x, y)

72

gantt_start_compare(x, y)

73

end

73

end

74

}

74

}

75

# Removes issues that have no start or end date

75

# Removes issues that have no start or end date

76

@events.reject! {|i| i.is_a?(Issue) && (i.start_date.nil? || i.due_before.nil?) }

76

@events.reject! {|i| i.is_a?(Issue) && (i.start_date.nil? || i.due_before.nil?) }

77

@events

77

@events

78

end

78

end

79

80

def params

80

def params

81

{ :zoom => zoom, :year => year_from, :month => month_from, :months => months }

81

{ :zoom => zoom, :year => year_from, :month => month_from, :months => months }

82

end

82

end

83

84

def params_previous

84

def params_previous

85

{ :year => (date_from << months).year, :month => (date_from << months).month, :zoom => zoom, :months => months }

85

{ :year => (date_from << months).year, :month => (date_from << months).month, :zoom => zoom, :months => months }

86

end

86

end

87

88

def params_next

88

def params_next

89

{ :year => (date_from >> months).year, :month => (date_from >> months).month, :zoom => zoom, :months => months }

89

{ :year => (date_from >> months).year, :month => (date_from >> months).month, :zoom => zoom, :months => months }

90

end

90

end

91

92

# Generates a gantt image

92

# Generates a gantt image

93

# Only defined if RMagick is avalaible

93

# Only defined if RMagick is avalaible

94

def to_image(format='PNG')

94

def to_image(project, format='PNG')

95

date_to = (@date_from >> @months)-1

95

date_to = (@date_from >> @months)-1

96

show_weeks = @zoom > 1

96

show_weeks = @zoom > 1

97

show_days = @zoom > 2

97

show_days = @zoom > 2

98

99

subject_width = 320

99

subject_width = 400

100

header_heigth = 18

100

header_heigth = 18

101

# width of one day in pixels

101

# width of one day in pixels

102

zoom = @zoom*2

102

zoom = @zoom*2

103

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

103

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

104

g_height = 20 * events.length + 20

104

g_height = 20 * events.length + 20

105

headers_heigth = (show_weeks ? 2*header_heigth : header_heigth)

105

headers_heigth = (show_weeks ? 2*header_heigth : header_heigth)

106

height = g_height + headers_heigth

106

height = g_height + headers_heigth

107

108

imgl = Magick::ImageList.new

108

imgl = Magick::ImageList.new

109

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

109

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

110

gc = Magick::Draw.new

110

gc = Magick::Draw.new

111

112

# Subjects

112

# Subjects

113

top = headers_heigth + 20

113

top = headers_heigth + 20

114

gc.fill('black')

114

gc.fill('black')

115

gc.stroke('transparent')

115

gc.stroke('transparent')

116

gc.stroke_width(1)

116

gc.stroke_width(1)

117

events.each do |i|

117

events.each do |i|

118

gc.text(4, top + 2, (i.is_a?(Issue) ? i.subject : i.name))

118

text = ""

119

if i.is_a? Issue

120

text = "#{i.tracker} #{i.id}: #{i.subject}"

121

else

122

text = i.name

123

end

124

text = "#{i.project} - #{text}" unless project && project == i.project

125

gc.text(4, top + 2, text)

119

top = top + 20

126

top = top + 20

120

end

127

end

121

128

122

# Months headers

129

# Months headers

123

month_f = @date_from

130

month_f = @date_from

124

left = subject_width

131

left = subject_width

125

@months.times do

132

@months.times do

126

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

133

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

127

gc.fill('white')

134

gc.fill('white')

128

gc.stroke('grey')

135

gc.stroke('grey')

129

gc.stroke_width(1)

136

gc.stroke_width(1)

130

gc.rectangle(left, 0, left + width, height)

137

gc.rectangle(left, 0, left + width, height)

131

gc.fill('black')

138

gc.fill('black')

132

gc.stroke('transparent')

139

gc.stroke('transparent')

133

gc.stroke_width(1)

140

gc.stroke_width(1)

134

gc.text(left.round + 8, 14, "#{month_f.year}-#{month_f.month}")

141

gc.text(left.round + 8, 14, "#{month_f.year}-#{month_f.month}")

135

left = left + width

142

left = left + width

136

month_f = month_f >> 1

143

month_f = month_f >> 1

137

end

144

end

138

145

139

# Weeks headers

146

# Weeks headers

140

if show_weeks

147

if show_weeks

141

left = subject_width

148

left = subject_width

142

height = header_heigth

149

height = header_heigth

143

if @date_from.cwday == 1

150

if @date_from.cwday == 1

144

# date_from is monday

151

# date_from is monday

145

week_f = date_from

152

week_f = date_from

146

else

153

else

147

# find next monday after date_from

154

# find next monday after date_from

148

week_f = @date_from + (7 - @date_from.cwday + 1)

155

week_f = @date_from + (7 - @date_from.cwday + 1)

149

width = (7 - @date_from.cwday + 1) * zoom

156

width = (7 - @date_from.cwday + 1) * zoom

150

gc.fill('white')

157

gc.fill('white')

151

gc.stroke('grey')

158

gc.stroke('grey')

152

gc.stroke_width(1)

159

gc.stroke_width(1)

153

gc.rectangle(left, header_heigth, left + width, 2*header_heigth + g_height-1)

160

gc.rectangle(left, header_heigth, left + width, 2*header_heigth + g_height-1)

154

left = left + width

161

left = left + width

155

end

162

end

156

while week_f <= date_to

163

while week_f <= date_to

157

width = (week_f + 6 <= date_to) ? 7 * zoom : (date_to - week_f + 1) * zoom

164

width = (week_f + 6 <= date_to) ? 7 * zoom : (date_to - week_f + 1) * zoom

158

gc.fill('white')

165

gc.fill('white')

159

gc.stroke('grey')

166

gc.stroke('grey')

160

gc.stroke_width(1)

167

gc.stroke_width(1)

161

gc.rectangle(left.round, header_heigth, left.round + width, 2*header_heigth + g_height-1)

168

gc.rectangle(left.round, header_heigth, left.round + width, 2*header_heigth + g_height-1)

162

gc.fill('black')

169

gc.fill('black')

163

gc.stroke('transparent')

170

gc.stroke('transparent')

164

gc.stroke_width(1)

171

gc.stroke_width(1)

165

gc.text(left.round + 2, header_heigth + 14, week_f.cweek.to_s)

172

gc.text(left.round + 2, header_heigth + 14, week_f.cweek.to_s)

166

left = left + width

173

left = left + width

167

week_f = week_f+7

174

week_f = week_f+7

168

end

175

end

169

end

176

end

170

177

171

# Days details (week-end in grey)

178

# Days details (week-end in grey)

172

if show_days

179

if show_days

173

left = subject_width

180

left = subject_width

174

height = g_height + header_heigth - 1

181

height = g_height + header_heigth - 1

175

wday = @date_from.cwday

182

wday = @date_from.cwday

176

(date_to - @date_from + 1).to_i.times do

183

(date_to - @date_from + 1).to_i.times do

177

width = zoom

184

width = zoom

178

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

185

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

179

gc.stroke('grey')

186

gc.stroke('grey')

180

gc.stroke_width(1)

187

gc.stroke_width(1)

181

gc.rectangle(left, 2*header_heigth, left + width, 2*header_heigth + g_height-1)

188

gc.rectangle(left, 2*header_heigth, left + width, 2*header_heigth + g_height-1)

182

left = left + width

189

left = left + width

183

wday = wday + 1

190

wday = wday + 1

184

wday = 1 if wday > 7

191

wday = 1 if wday > 7

185

end

192

end

186

end

193

end

187

194

188

# border

195

# border

189

gc.fill('transparent')

196

gc.fill('transparent')

190

gc.stroke('grey')

197

gc.stroke('grey')

191

gc.stroke_width(1)

198

gc.stroke_width(1)

192

gc.rectangle(0, 0, subject_width+g_width, headers_heigth)

199

gc.rectangle(0, 0, subject_width+g_width, headers_heigth)

193

gc.stroke('black')

200

gc.stroke('black')

194

gc.rectangle(0, 0, subject_width+g_width, g_height+ headers_heigth-1)

201

gc.rectangle(0, 0, subject_width+g_width, g_height+ headers_heigth-1)

195

202

196

# content

203

# content

197

top = headers_heigth + 20

204

top = headers_heigth + 20

198

gc.stroke('transparent')

205

gc.stroke('transparent')

199

events.each do |i|

206

events.each do |i|

200

if i.is_a?(Issue)

207

if i.is_a?(Issue)

201

i_start_date = (i.start_date >= @date_from ? i.start_date : @date_from )

208

i_start_date = (i.start_date >= @date_from ? i.start_date : @date_from )

202

i_end_date = (i.due_before <= date_to ? i.due_before : date_to )

209

i_end_date = (i.due_before <= date_to ? i.due_before : date_to )

203

i_done_date = i.start_date + ((i.due_before - i.start_date+1)*i.done_ratio/100).floor

210

i_done_date = i.start_date + ((i.due_before - i.start_date+1)*i.done_ratio/100).floor

204

i_done_date = (i_done_date <= @date_from ? @date_from : i_done_date )

211

i_done_date = (i_done_date <= @date_from ? @date_from : i_done_date )

205

i_done_date = (i_done_date >= date_to ? date_to : i_done_date )

212

i_done_date = (i_done_date >= date_to ? date_to : i_done_date )

206

i_late_date = [i_end_date, Date.today].min if i_start_date < Date.today

213

i_late_date = [i_end_date, Date.today].min if i_start_date < Date.today

207

214

208

i_left = subject_width + ((i_start_date - @date_from)*zoom).floor

215

i_left = subject_width + ((i_start_date - @date_from)*zoom).floor

209

i_width = ((i_end_date - i_start_date + 1)*zoom).floor # total width of the issue

216

i_width = ((i_end_date - i_start_date + 1)*zoom).floor # total width of the issue

210

d_width = ((i_done_date - i_start_date)*zoom).floor # done width

217

d_width = ((i_done_date - i_start_date)*zoom).floor # done width

211

l_width = i_late_date ? ((i_late_date - i_start_date+1)*zoom).floor : 0 # delay width

218

l_width = i_late_date ? ((i_late_date - i_start_date+1)*zoom).floor : 0 # delay width

212

219

213

gc.fill('grey')

220

gc.fill('grey')

214

gc.rectangle(i_left, top, i_left + i_width, top - 6)

221

gc.rectangle(i_left, top, i_left + i_width, top - 6)

215

gc.fill('red')

222

gc.fill('red')

216

gc.rectangle(i_left, top, i_left + l_width, top - 6) if l_width > 0

223

gc.rectangle(i_left, top, i_left + l_width, top - 6) if l_width > 0

217

gc.fill('blue')

224

gc.fill('blue')

218

gc.rectangle(i_left, top, i_left + d_width, top - 6) if d_width > 0

225

gc.rectangle(i_left, top, i_left + d_width, top - 6) if d_width > 0

219

gc.fill('black')

226

gc.fill('black')

220

gc.text(i_left + i_width + 5,top + 1, "#{i.status.name} #{i.done_ratio}%")

227

gc.text(i_left + i_width + 5,top + 1, "#{i.status.name} #{i.done_ratio}%")

221

else

228

else

222

i_left = subject_width + ((i.start_date - @date_from)*zoom).floor

229

i_left = subject_width + ((i.start_date - @date_from)*zoom).floor

223

gc.fill('green')

230

gc.fill('green')

224

gc.rectangle(i_left, top, i_left + 6, top - 6)

231

gc.rectangle(i_left, top, i_left + 6, top - 6)

225

gc.fill('black')

232

gc.fill('black')

226

gc.text(i_left + 11, top + 1, i.name)

233

gc.text(i_left + 11, top + 1, i.name)

227

end

234

end

228

top = top + 20

235

top = top + 20

229

end

236

end

230

237

231

# today red line

238

# today red line

232

if Date.today >= @date_from and Date.today <= date_to

239

if Date.today >= @date_from and Date.today <= date_to

233

gc.stroke('red')

240

gc.stroke('red')

234

x = (Date.today-@date_from+1)*zoom + subject_width

241

x = (Date.today-@date_from+1)*zoom + subject_width

235

gc.line(x, headers_heigth, x, headers_heigth + g_height-1)

242

gc.line(x, headers_heigth, x, headers_heigth + g_height-1)

236

end

243

end

237

244

238

gc.draw(imgl)

245

gc.draw(imgl)

239

imgl.format = format

246

imgl.format = format

240

imgl.to_blob

247

imgl.to_blob

241

end if Object.const_defined?(:Magick)

248

end if Object.const_defined?(:Magick)

242

249

243

private

250

private

244

251

245

def gantt_issue_compare(x, y, issues)

252

def gantt_issue_compare(x, y, issues)

246

if x.parent_id == y.parent_id

253

if x.parent_id == y.parent_id

247

gantt_start_compare(x, y)

254

gantt_start_compare(x, y)

248

elsif x.is_ancestor_of?(y)

255

elsif x.is_ancestor_of?(y)

249

-1

256

-1

250

elsif y.is_ancestor_of?(x)

257

elsif y.is_ancestor_of?(x)

251

1

258

1

252

else

259

else

253

ax = issues.select {|i| i.is_a?(Issue) && i.is_ancestor_of?(x) && !i.is_ancestor_of?(y) }.sort_by(&:lft).first

260

ax = issues.select {|i| i.is_a?(Issue) && i.is_ancestor_of?(x) && !i.is_ancestor_of?(y) }.sort_by(&:lft).first

254

ay = issues.select {|i| i.is_a?(Issue) && i.is_ancestor_of?(y) && !i.is_ancestor_of?(x) }.sort_by(&:lft).first

261

ay = issues.select {|i| i.is_a?(Issue) && i.is_ancestor_of?(y) && !i.is_ancestor_of?(x) }.sort_by(&:lft).first

255

if ax.nil? && ay.nil?

262

if ax.nil? && ay.nil?

256

gantt_start_compare(x, y)

263

gantt_start_compare(x, y)

257

else

264

else

258

gantt_issue_compare(ax || x, ay || y, issues)

265

gantt_issue_compare(ax || x, ay || y, issues)

259

end

266

end

260

end

267

end

261

end

268

end

262

269

263

def gantt_start_compare(x, y)

270

def gantt_start_compare(x, y)

264

if x.start_date.nil?

271

if x.start_date.nil?

265

-1

272

-1

266

elsif y.start_date.nil?

273

elsif y.start_date.nil?

267

1

274

1

268

else

275

else

269

x.start_date <=> y.start_date

276

x.start_date <=> y.start_date

270

end

277

end

271

end

278

end

272

end

279

end

273

end

280

end

274

end

281

end

	Site-wide shortcuts
/	Use quick search box
g h	Goto home page
g g	Goto my private gists page
g G	Goto my public gists page
g 0-9	Goto bookmarked items from 0-9
n r	New repository page
n g	New gist page

	Repositories
g s	Goto summary page
g c	Goto changelog page
g f	Goto files page
g F	Goto files page with file search activated
g p	Goto pull requests page
g o	Goto repository settings
g O	Goto repository access permissions settings
t s	Toggle sidebar on some pages

             class GanttsController < ApplicationController
               before_filter :find_optional_project
               rescue_from Query::StatementInvalid, :with => :query_statement_invalid
               helper :issues
               helper :projects
               helper :queries
               include QueriesHelper
               helper :sort
               include SortHelper
               include Redmine::Export::PDF
               def show
                 @gantt = Redmine::Helpers::Gantt.new(params)
                 retrieve_query
                 @query.group_by = nil
                 if @query.valid?
                   events = []
                   # Issues that have start and due dates
                   events += @query.issues(:include => [:tracker, :assigned_to, :priority],
                                           :order => "start_date, due_date",
                                           :conditions => ["(((start_date>=? and start_date<=?) or (due_date>=? and due_date<=?) or (start_date<? and due_date>?)) and start_date is not null and due_date is not null)", @gantt.date_from, @gantt.date_to, @gantt.date_from, @gantt.date_to, @gantt.date_from, @gantt.date_to]
                                           )
                   # Issues that don't have a due date but that are assigned to a version with a date
                   events += @query.issues(:include => [:tracker, :assigned_to, :priority, :fixed_version],
                                           :order => "start_date, effective_date",
                                           :conditions => ["(((start_date>=? and start_date<=?) or (effective_date>=? and effective_date<=?) or (start_date<? and effective_date>?)) and start_date is not null and due_date is null and effective_date is not null)", @gantt.date_from, @gantt.date_to, @gantt.date_from, @gantt.date_to, @gantt.date_from, @gantt.date_to]
                                           )
                   # Versions
                   events += @query.versions(:conditions => ["effective_date BETWEEN ? AND ?", @gantt.date_from, @gantt.date_to])
                   @gantt.events = events
                 end
                 basename = (@project ? "#{@project.identifier}-" : '') + 'gantt'
                 respond_to do |format|
                   format.html { render :action => "show", :layout => !request.xhr? }
-                  format.png  { send_data(@gantt.to_image, :disposition => 'inline', :type => 'image/png', :filename => "#{basename}.png") } if @gantt.respond_to?('to_image')
+                  format.png  { send_data(@gantt.to_image(@project), :disposition => 'inline', :type => 'image/png', :filename => "#{basename}.png") } if @gantt.respond_to?('to_image')
                   format.pdf  { send_data(gantt_to_pdf(@gantt, @project), :type => 'application/pdf', :filename => "#{basename}.pdf") }
                 end
               end
             end

             # 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
                   attr_reader :year_from, :month_from, :date_from, :date_to, :zoom, :months, :events
                   def initialize(options={})
                     options = options.dup
                     @events = []
                     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
                   end
                   def events=(e)
                     @events = e
                     # Adds all ancestors
                     root_ids = e.select {|i| i.is_a?(Issue) && i.parent_id? }.collect(&:root_id).uniq
                     if root_ids.any?
                       # Retrieves all nodes
                       parents = Issue.find_all_by_root_id(root_ids, :conditions => ["rgt - lft > 1"])
                       # Only add ancestors
                       @events += parents.select {|p| @events.detect {|i| i.is_a?(Issue) && p.is_ancestor_of?(i)}}
                     end
                     @events.uniq!
                     # Sort issues by hierarchy and start dates
                     @events.sort! {|x,y|
                       if x.is_a?(Issue) && y.is_a?(Issue)
                         gantt_issue_compare(x, y, @events)
                       else
                         gantt_start_compare(x, y)
                       end
                     }
                     # Removes issues that have no start or end date
                     @events.reject! {|i| i.is_a?(Issue) && (i.start_date.nil? || i.due_before.nil?) }
                     @events
                   end
                   def params
                     { :zoom => zoom, :year => year_from, :month => month_from, :months => months }
                   end
                   def params_previous
                     { :year => (date_from << months).year, :month => (date_from << months).month, :zoom => zoom, :months => months }
                   end
                   def params_next
                     { :year => (date_from >> months).year, :month => (date_from >> months).month, :zoom => zoom, :months => months }
                   end
                   # Generates a gantt image
                   # Only defined if RMagick is avalaible
-                  def to_image(format='PNG')
+                  def to_image(project, format='PNG')
                     date_to = (@date_from >> @months)-1
                     show_weeks = @zoom > 1
                     show_days = @zoom > 2
-                    subject_width = 320
+                    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 * events.length + 20
                     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
                     top = headers_heigth + 20
                     gc.fill('black')
                     gc.stroke('transparent')
                     gc.stroke_width(1)
                     events.each do |i|
-                      gc.text(4, top + 2, (i.is_a?(Issue) ? i.subject : i.name))
+                      text = ""
+                      if i.is_a? Issue
+                        text = "#{i.tracker} #{i.id}: #{i.subject}"
+                      else
+                        text = i.name
+                      end
+                      text = "#{i.project} - #{text}" unless project && project == i.project
+                      gc.text(4, top + 2, text)
                       top = top + 20
                     end
                     # 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('grey')
                           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')
                     events.each do |i|
                       if i.is_a?(Issue)
                         i_start_date = (i.start_date >= @date_from ? i.start_date : @date_from )
                         i_end_date = (i.due_before <= date_to ? i.due_before : date_to )
                         i_done_date = i.start_date + ((i.due_before - i.start_date+1)*i.done_ratio/100).floor
                         i_done_date = (i_done_date <= @date_from ? @date_from : i_done_date )
                         i_done_date = (i_done_date >= date_to ? date_to : i_done_date )
                         i_late_date = [i_end_date, Date.today].min if i_start_date < Date.today
                         i_left = subject_width + ((i_start_date - @date_from)*zoom).floor
                         i_width = ((i_end_date - i_start_date + 1)*zoom).floor                  # total width of the issue
                         d_width = ((i_done_date - i_start_date)*zoom).floor                     # done width
                         l_width = i_late_date ? ((i_late_date - i_start_date+1)*zoom).floor : 0 # delay width
                         gc.fill('grey')
                         gc.rectangle(i_left, top, i_left + i_width, top - 6)
                         gc.fill('red')
                         gc.rectangle(i_left, top, i_left + l_width, top - 6) if l_width > 0
                         gc.fill('blue')
                         gc.rectangle(i_left, top, i_left + d_width, top - 6) if d_width > 0
                         gc.fill('black')
                         gc.text(i_left + i_width + 5,top + 1, "#{i.status.name} #{i.done_ratio}%")
                       else
                         i_left = subject_width + ((i.start_date - @date_from)*zoom).floor
                         gc.fill('green')
                         gc.rectangle(i_left, top, i_left + 6, top - 6)
                         gc.fill('black')
                         gc.text(i_left + 11, top + 1, i.name)
                       end
                       top = top + 20
                     end
                     # 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)
                   private
                   def gantt_issue_compare(x, y, issues)
                     if x.parent_id == y.parent_id
                       gantt_start_compare(x, y)
                     elsif x.is_ancestor_of?(y)
                       -1
                     elsif y.is_ancestor_of?(x)
                     else
                       ax = issues.select {|i| i.is_a?(Issue) && i.is_ancestor_of?(x) && !i.is_ancestor_of?(y) }.sort_by(&:lft).first
                       ay = issues.select {|i| i.is_a?(Issue) && i.is_ancestor_of?(y) && !i.is_ancestor_of?(x) }.sort_by(&:lft).first
                       if ax.nil? && ay.nil?
                         gantt_start_compare(x, y)
                       else
                         gantt_issue_compare(ax || x, ay || y, issues)
                       end
                     end
                   end
                   def gantt_start_compare(x, y)
                     if x.start_date.nil?
                       -1
                     elsif y.start_date.nil?
                     else
                       x.start_date <=> y.start_date
                     end
                   end
                 end
               end
             end