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Fixed: SVG::Graph raises an error when using external stylesheet (#1402)....
Jean-Philippe Lang -
r1510:cc9b8f78783b
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1 begin
1 begin
2 require 'zlib'
2 require 'zlib'
3 @@__have_zlib = true
3 @@__have_zlib = true
4 rescue
4 rescue
5 @@__have_zlib = false
5 @@__have_zlib = false
6 end
6 end
7
7
8 require 'rexml/document'
8 require 'rexml/document'
9
9
10 module SVG
10 module SVG
11 module Graph
11 module Graph
12 VERSION = '@ANT_VERSION@'
12 VERSION = '@ANT_VERSION@'
13
13
14 # === Base object for generating SVG Graphs
14 # === Base object for generating SVG Graphs
15 #
15 #
16 # == Synopsis
16 # == Synopsis
17 #
17 #
18 # This class is only used as a superclass of specialized charts. Do not
18 # This class is only used as a superclass of specialized charts. Do not
19 # attempt to use this class directly, unless creating a new chart type.
19 # attempt to use this class directly, unless creating a new chart type.
20 #
20 #
21 # For examples of how to subclass this class, see the existing specific
21 # For examples of how to subclass this class, see the existing specific
22 # subclasses, such as SVG::Graph::Pie.
22 # subclasses, such as SVG::Graph::Pie.
23 #
23 #
24 # == Examples
24 # == Examples
25 #
25 #
26 # For examples of how to use this package, see either the test files, or
26 # For examples of how to use this package, see either the test files, or
27 # the documentation for the specific class you want to use.
27 # the documentation for the specific class you want to use.
28 #
28 #
29 # * file:test/plot.rb
29 # * file:test/plot.rb
30 # * file:test/single.rb
30 # * file:test/single.rb
31 # * file:test/test.rb
31 # * file:test/test.rb
32 # * file:test/timeseries.rb
32 # * file:test/timeseries.rb
33 #
33 #
34 # == Description
34 # == Description
35 #
35 #
36 # This package should be used as a base for creating SVG graphs.
36 # This package should be used as a base for creating SVG graphs.
37 #
37 #
38 # == Acknowledgements
38 # == Acknowledgements
39 #
39 #
40 # Leo Lapworth for creating the SVG::TT::Graph package which this Ruby
40 # Leo Lapworth for creating the SVG::TT::Graph package which this Ruby
41 # port is based on.
41 # port is based on.
42 #
42 #
43 # Stephen Morgan for creating the TT template and SVG.
43 # Stephen Morgan for creating the TT template and SVG.
44 #
44 #
45 # == See
45 # == See
46 #
46 #
47 # * SVG::Graph::BarHorizontal
47 # * SVG::Graph::BarHorizontal
48 # * SVG::Graph::Bar
48 # * SVG::Graph::Bar
49 # * SVG::Graph::Line
49 # * SVG::Graph::Line
50 # * SVG::Graph::Pie
50 # * SVG::Graph::Pie
51 # * SVG::Graph::Plot
51 # * SVG::Graph::Plot
52 # * SVG::Graph::TimeSeries
52 # * SVG::Graph::TimeSeries
53 #
53 #
54 # == Author
54 # == Author
55 #
55 #
56 # Sean E. Russell <serATgermaneHYPHENsoftwareDOTcom>
56 # Sean E. Russell <serATgermaneHYPHENsoftwareDOTcom>
57 #
57 #
58 # Copyright 2004 Sean E. Russell
58 # Copyright 2004 Sean E. Russell
59 # This software is available under the Ruby license[LICENSE.txt]
59 # This software is available under the Ruby license[LICENSE.txt]
60 #
60 #
61 class Graph
61 class Graph
62 include REXML
62 include REXML
63
63
64 # Initialize the graph object with the graph settings. You won't
64 # Initialize the graph object with the graph settings. You won't
65 # instantiate this class directly; see the subclass for options.
65 # instantiate this class directly; see the subclass for options.
66 # [width] 500
66 # [width] 500
67 # [height] 300
67 # [height] 300
68 # [show_x_guidelines] false
68 # [show_x_guidelines] false
69 # [show_y_guidelines] true
69 # [show_y_guidelines] true
70 # [show_data_values] true
70 # [show_data_values] true
71 # [min_scale_value] 0
71 # [min_scale_value] 0
72 # [show_x_labels] true
72 # [show_x_labels] true
73 # [stagger_x_labels] false
73 # [stagger_x_labels] false
74 # [rotate_x_labels] false
74 # [rotate_x_labels] false
75 # [step_x_labels] 1
75 # [step_x_labels] 1
76 # [step_include_first_x_label] true
76 # [step_include_first_x_label] true
77 # [show_y_labels] true
77 # [show_y_labels] true
78 # [rotate_y_labels] false
78 # [rotate_y_labels] false
79 # [scale_integers] false
79 # [scale_integers] false
80 # [show_x_title] false
80 # [show_x_title] false
81 # [x_title] 'X Field names'
81 # [x_title] 'X Field names'
82 # [show_y_title] false
82 # [show_y_title] false
83 # [y_title_text_direction] :bt
83 # [y_title_text_direction] :bt
84 # [y_title] 'Y Scale'
84 # [y_title] 'Y Scale'
85 # [show_graph_title] false
85 # [show_graph_title] false
86 # [graph_title] 'Graph Title'
86 # [graph_title] 'Graph Title'
87 # [show_graph_subtitle] false
87 # [show_graph_subtitle] false
88 # [graph_subtitle] 'Graph Sub Title'
88 # [graph_subtitle] 'Graph Sub Title'
89 # [key] true,
89 # [key] true,
90 # [key_position] :right, # bottom or righ
90 # [key_position] :right, # bottom or righ
91 # [font_size] 12
91 # [font_size] 12
92 # [title_font_size] 16
92 # [title_font_size] 16
93 # [subtitle_font_size] 14
93 # [subtitle_font_size] 14
94 # [x_label_font_size] 12
94 # [x_label_font_size] 12
95 # [x_title_font_size] 14
95 # [x_title_font_size] 14
96 # [y_label_font_size] 12
96 # [y_label_font_size] 12
97 # [y_title_font_size] 14
97 # [y_title_font_size] 14
98 # [key_font_size] 10
98 # [key_font_size] 10
99 # [no_css] false
99 # [no_css] false
100 # [add_popups] false
100 # [add_popups] false
101 def initialize( config )
101 def initialize( config )
102 @config = config
102 @config = config
103
103
104 self.top_align = self.top_font = self.right_align = self.right_font = 0
104 self.top_align = self.top_font = self.right_align = self.right_font = 0
105
105
106 init_with({
106 init_with({
107 :width => 500,
107 :width => 500,
108 :height => 300,
108 :height => 300,
109 :show_x_guidelines => false,
109 :show_x_guidelines => false,
110 :show_y_guidelines => true,
110 :show_y_guidelines => true,
111 :show_data_values => true,
111 :show_data_values => true,
112
112
113 :min_scale_value => 0,
113 :min_scale_value => 0,
114
114
115 :show_x_labels => true,
115 :show_x_labels => true,
116 :stagger_x_labels => false,
116 :stagger_x_labels => false,
117 :rotate_x_labels => false,
117 :rotate_x_labels => false,
118 :step_x_labels => 1,
118 :step_x_labels => 1,
119 :step_include_first_x_label => true,
119 :step_include_first_x_label => true,
120
120
121 :show_y_labels => true,
121 :show_y_labels => true,
122 :rotate_y_labels => false,
122 :rotate_y_labels => false,
123 :stagger_y_labels => false,
123 :stagger_y_labels => false,
124 :scale_integers => false,
124 :scale_integers => false,
125
125
126 :show_x_title => false,
126 :show_x_title => false,
127 :x_title => 'X Field names',
127 :x_title => 'X Field names',
128
128
129 :show_y_title => false,
129 :show_y_title => false,
130 :y_title_text_direction => :bt,
130 :y_title_text_direction => :bt,
131 :y_title => 'Y Scale',
131 :y_title => 'Y Scale',
132
132
133 :show_graph_title => false,
133 :show_graph_title => false,
134 :graph_title => 'Graph Title',
134 :graph_title => 'Graph Title',
135 :show_graph_subtitle => false,
135 :show_graph_subtitle => false,
136 :graph_subtitle => 'Graph Sub Title',
136 :graph_subtitle => 'Graph Sub Title',
137 :key => true,
137 :key => true,
138 :key_position => :right, # bottom or right
138 :key_position => :right, # bottom or right
139
139
140 :font_size =>10,
140 :font_size =>10,
141 :title_font_size =>12,
141 :title_font_size =>12,
142 :subtitle_font_size =>14,
142 :subtitle_font_size =>14,
143 :x_label_font_size =>11,
143 :x_label_font_size =>11,
144 :x_title_font_size =>14,
144 :x_title_font_size =>14,
145 :y_label_font_size =>11,
145 :y_label_font_size =>11,
146 :y_title_font_size =>14,
146 :y_title_font_size =>14,
147 :key_font_size => 9,
147 :key_font_size => 9,
148
148
149 :no_css =>false,
149 :no_css =>false,
150 :add_popups =>false,
150 :add_popups =>false,
151 })
151 })
152
152
153 set_defaults if methods.include? "set_defaults"
153 set_defaults if methods.include? "set_defaults"
154
154
155 init_with config
155 init_with config
156 end
156 end
157
157
158
158
159 # This method allows you do add data to the graph object.
159 # This method allows you do add data to the graph object.
160 # It can be called several times to add more data sets in.
160 # It can be called several times to add more data sets in.
161 #
161 #
162 # data_sales_02 = [12, 45, 21];
162 # data_sales_02 = [12, 45, 21];
163 #
163 #
164 # graph.add_data({
164 # graph.add_data({
165 # :data => data_sales_02,
165 # :data => data_sales_02,
166 # :title => 'Sales 2002'
166 # :title => 'Sales 2002'
167 # })
167 # })
168 def add_data conf
168 def add_data conf
169 @data = [] unless defined? @data
169 @data = [] unless defined? @data
170
170
171 if conf[:data] and conf[:data].kind_of? Array
171 if conf[:data] and conf[:data].kind_of? Array
172 @data << conf
172 @data << conf
173 else
173 else
174 raise "No data provided by #{conf.inspect}"
174 raise "No data provided by #{conf.inspect}"
175 end
175 end
176 end
176 end
177
177
178
178
179 # This method removes all data from the object so that you can
179 # This method removes all data from the object so that you can
180 # reuse it to create a new graph but with the same config options.
180 # reuse it to create a new graph but with the same config options.
181 #
181 #
182 # graph.clear_data
182 # graph.clear_data
183 def clear_data
183 def clear_data
184 @data = []
184 @data = []
185 end
185 end
186
186
187
187
188 # This method processes the template with the data and
188 # This method processes the template with the data and
189 # config which has been set and returns the resulting SVG.
189 # config which has been set and returns the resulting SVG.
190 #
190 #
191 # This method will croak unless at least one data set has
191 # This method will croak unless at least one data set has
192 # been added to the graph object.
192 # been added to the graph object.
193 #
193 #
194 # print graph.burn
194 # print graph.burn
195 def burn
195 def burn
196 raise "No data available" unless @data.size > 0
196 raise "No data available" unless @data.size > 0
197
197
198 calculations if methods.include? 'calculations'
198 calculations if methods.include? 'calculations'
199
199
200 start_svg
200 start_svg
201 calculate_graph_dimensions
201 calculate_graph_dimensions
202 @foreground = Element.new( "g" )
202 @foreground = Element.new( "g" )
203 draw_graph
203 draw_graph
204 draw_titles
204 draw_titles
205 draw_legend
205 draw_legend
206 draw_data
206 draw_data
207 @graph.add_element( @foreground )
207 @graph.add_element( @foreground )
208 style
208 style
209
209
210 data = ""
210 data = ""
211 @doc.write( data, 0 )
211 @doc.write( data, 0 )
212
212
213 if @config[:compress]
213 if @config[:compress]
214 if @@__have_zlib
214 if @@__have_zlib
215 inp, out = IO.pipe
215 inp, out = IO.pipe
216 gz = Zlib::GzipWriter.new( out )
216 gz = Zlib::GzipWriter.new( out )
217 gz.write data
217 gz.write data
218 gz.close
218 gz.close
219 data = inp.read
219 data = inp.read
220 else
220 else
221 data << "<!-- Ruby Zlib not available for SVGZ -->";
221 data << "<!-- Ruby Zlib not available for SVGZ -->";
222 end
222 end
223 end
223 end
224
224
225 return data
225 return data
226 end
226 end
227
227
228
228
229 # Set the height of the graph box, this is the total height
229 # Set the height of the graph box, this is the total height
230 # of the SVG box created - not the graph it self which auto
230 # of the SVG box created - not the graph it self which auto
231 # scales to fix the space.
231 # scales to fix the space.
232 attr_accessor :height
232 attr_accessor :height
233 # Set the width of the graph box, this is the total width
233 # Set the width of the graph box, this is the total width
234 # of the SVG box created - not the graph it self which auto
234 # of the SVG box created - not the graph it self which auto
235 # scales to fix the space.
235 # scales to fix the space.
236 attr_accessor :width
236 attr_accessor :width
237 # Set the path to an external stylesheet, set to '' if
237 # Set the path to an external stylesheet, set to '' if
238 # you want to revert back to using the defaut internal version.
238 # you want to revert back to using the defaut internal version.
239 #
239 #
240 # To create an external stylesheet create a graph using the
240 # To create an external stylesheet create a graph using the
241 # default internal version and copy the stylesheet section to
241 # default internal version and copy the stylesheet section to
242 # an external file and edit from there.
242 # an external file and edit from there.
243 attr_accessor :style_sheet
243 attr_accessor :style_sheet
244 # (Bool) Show the value of each element of data on the graph
244 # (Bool) Show the value of each element of data on the graph
245 attr_accessor :show_data_values
245 attr_accessor :show_data_values
246 # The point at which the Y axis starts, defaults to '0',
246 # The point at which the Y axis starts, defaults to '0',
247 # if set to nil it will default to the minimum data value.
247 # if set to nil it will default to the minimum data value.
248 attr_accessor :min_scale_value
248 attr_accessor :min_scale_value
249 # Whether to show labels on the X axis or not, defaults
249 # Whether to show labels on the X axis or not, defaults
250 # to true, set to false if you want to turn them off.
250 # to true, set to false if you want to turn them off.
251 attr_accessor :show_x_labels
251 attr_accessor :show_x_labels
252 # This puts the X labels at alternative levels so if they
252 # This puts the X labels at alternative levels so if they
253 # are long field names they will not overlap so easily.
253 # are long field names they will not overlap so easily.
254 # Default it false, to turn on set to true.
254 # Default it false, to turn on set to true.
255 attr_accessor :stagger_x_labels
255 attr_accessor :stagger_x_labels
256 # This puts the Y labels at alternative levels so if they
256 # This puts the Y labels at alternative levels so if they
257 # are long field names they will not overlap so easily.
257 # are long field names they will not overlap so easily.
258 # Default it false, to turn on set to true.
258 # Default it false, to turn on set to true.
259 attr_accessor :stagger_y_labels
259 attr_accessor :stagger_y_labels
260 # This turns the X axis labels by 90 degrees.
260 # This turns the X axis labels by 90 degrees.
261 # Default it false, to turn on set to true.
261 # Default it false, to turn on set to true.
262 attr_accessor :rotate_x_labels
262 attr_accessor :rotate_x_labels
263 # This turns the Y axis labels by 90 degrees.
263 # This turns the Y axis labels by 90 degrees.
264 # Default it false, to turn on set to true.
264 # Default it false, to turn on set to true.
265 attr_accessor :rotate_y_labels
265 attr_accessor :rotate_y_labels
266 # How many "steps" to use between displayed X axis labels,
266 # How many "steps" to use between displayed X axis labels,
267 # a step of one means display every label, a step of two results
267 # a step of one means display every label, a step of two results
268 # in every other label being displayed (label <gap> label <gap> label),
268 # in every other label being displayed (label <gap> label <gap> label),
269 # a step of three results in every third label being displayed
269 # a step of three results in every third label being displayed
270 # (label <gap> <gap> label <gap> <gap> label) and so on.
270 # (label <gap> <gap> label <gap> <gap> label) and so on.
271 attr_accessor :step_x_labels
271 attr_accessor :step_x_labels
272 # Whether to (when taking "steps" between X axis labels) step from
272 # Whether to (when taking "steps" between X axis labels) step from
273 # the first label (i.e. always include the first label) or step from
273 # the first label (i.e. always include the first label) or step from
274 # the X axis origin (i.e. start with a gap if step_x_labels is greater
274 # the X axis origin (i.e. start with a gap if step_x_labels is greater
275 # than one).
275 # than one).
276 attr_accessor :step_include_first_x_label
276 attr_accessor :step_include_first_x_label
277 # Whether to show labels on the Y axis or not, defaults
277 # Whether to show labels on the Y axis or not, defaults
278 # to true, set to false if you want to turn them off.
278 # to true, set to false if you want to turn them off.
279 attr_accessor :show_y_labels
279 attr_accessor :show_y_labels
280 # Ensures only whole numbers are used as the scale divisions.
280 # Ensures only whole numbers are used as the scale divisions.
281 # Default it false, to turn on set to true. This has no effect if
281 # Default it false, to turn on set to true. This has no effect if
282 # scale divisions are less than 1.
282 # scale divisions are less than 1.
283 attr_accessor :scale_integers
283 attr_accessor :scale_integers
284 # This defines the gap between markers on the Y axis,
284 # This defines the gap between markers on the Y axis,
285 # default is a 10th of the max_value, e.g. you will have
285 # default is a 10th of the max_value, e.g. you will have
286 # 10 markers on the Y axis. NOTE: do not set this too
286 # 10 markers on the Y axis. NOTE: do not set this too
287 # low - you are limited to 999 markers, after that the
287 # low - you are limited to 999 markers, after that the
288 # graph won't generate.
288 # graph won't generate.
289 attr_accessor :scale_divisions
289 attr_accessor :scale_divisions
290 # Whether to show the title under the X axis labels,
290 # Whether to show the title under the X axis labels,
291 # default is false, set to true to show.
291 # default is false, set to true to show.
292 attr_accessor :show_x_title
292 attr_accessor :show_x_title
293 # What the title under X axis should be, e.g. 'Months'.
293 # What the title under X axis should be, e.g. 'Months'.
294 attr_accessor :x_title
294 attr_accessor :x_title
295 # Whether to show the title under the Y axis labels,
295 # Whether to show the title under the Y axis labels,
296 # default is false, set to true to show.
296 # default is false, set to true to show.
297 attr_accessor :show_y_title
297 attr_accessor :show_y_title
298 # Aligns writing mode for Y axis label.
298 # Aligns writing mode for Y axis label.
299 # Defaults to :bt (Bottom to Top).
299 # Defaults to :bt (Bottom to Top).
300 # Change to :tb (Top to Bottom) to reverse.
300 # Change to :tb (Top to Bottom) to reverse.
301 attr_accessor :y_title_text_direction
301 attr_accessor :y_title_text_direction
302 # What the title under Y axis should be, e.g. 'Sales in thousands'.
302 # What the title under Y axis should be, e.g. 'Sales in thousands'.
303 attr_accessor :y_title
303 attr_accessor :y_title
304 # Whether to show a title on the graph, defaults
304 # Whether to show a title on the graph, defaults
305 # to false, set to true to show.
305 # to false, set to true to show.
306 attr_accessor :show_graph_title
306 attr_accessor :show_graph_title
307 # What the title on the graph should be.
307 # What the title on the graph should be.
308 attr_accessor :graph_title
308 attr_accessor :graph_title
309 # Whether to show a subtitle on the graph, defaults
309 # Whether to show a subtitle on the graph, defaults
310 # to false, set to true to show.
310 # to false, set to true to show.
311 attr_accessor :show_graph_subtitle
311 attr_accessor :show_graph_subtitle
312 # What the subtitle on the graph should be.
312 # What the subtitle on the graph should be.
313 attr_accessor :graph_subtitle
313 attr_accessor :graph_subtitle
314 # Whether to show a key, defaults to false, set to
314 # Whether to show a key, defaults to false, set to
315 # true if you want to show it.
315 # true if you want to show it.
316 attr_accessor :key
316 attr_accessor :key
317 # Where the key should be positioned, defaults to
317 # Where the key should be positioned, defaults to
318 # :right, set to :bottom if you want to move it.
318 # :right, set to :bottom if you want to move it.
319 attr_accessor :key_position
319 attr_accessor :key_position
320 # Set the font size (in points) of the data point labels
320 # Set the font size (in points) of the data point labels
321 attr_accessor :font_size
321 attr_accessor :font_size
322 # Set the font size of the X axis labels
322 # Set the font size of the X axis labels
323 attr_accessor :x_label_font_size
323 attr_accessor :x_label_font_size
324 # Set the font size of the X axis title
324 # Set the font size of the X axis title
325 attr_accessor :x_title_font_size
325 attr_accessor :x_title_font_size
326 # Set the font size of the Y axis labels
326 # Set the font size of the Y axis labels
327 attr_accessor :y_label_font_size
327 attr_accessor :y_label_font_size
328 # Set the font size of the Y axis title
328 # Set the font size of the Y axis title
329 attr_accessor :y_title_font_size
329 attr_accessor :y_title_font_size
330 # Set the title font size
330 # Set the title font size
331 attr_accessor :title_font_size
331 attr_accessor :title_font_size
332 # Set the subtitle font size
332 # Set the subtitle font size
333 attr_accessor :subtitle_font_size
333 attr_accessor :subtitle_font_size
334 # Set the key font size
334 # Set the key font size
335 attr_accessor :key_font_size
335 attr_accessor :key_font_size
336 # Show guidelines for the X axis
336 # Show guidelines for the X axis
337 attr_accessor :show_x_guidelines
337 attr_accessor :show_x_guidelines
338 # Show guidelines for the Y axis
338 # Show guidelines for the Y axis
339 attr_accessor :show_y_guidelines
339 attr_accessor :show_y_guidelines
340 # Do not use CSS if set to true. Many SVG viewers do not support CSS, but
340 # Do not use CSS if set to true. Many SVG viewers do not support CSS, but
341 # not using CSS can result in larger SVGs as well as making it impossible to
341 # not using CSS can result in larger SVGs as well as making it impossible to
342 # change colors after the chart is generated. Defaults to false.
342 # change colors after the chart is generated. Defaults to false.
343 attr_accessor :no_css
343 attr_accessor :no_css
344 # Add popups for the data points on some graphs
344 # Add popups for the data points on some graphs
345 attr_accessor :add_popups
345 attr_accessor :add_popups
346
346
347
347
348 protected
348 protected
349
349
350 def sort( *arrys )
350 def sort( *arrys )
351 sort_multiple( arrys )
351 sort_multiple( arrys )
352 end
352 end
353
353
354 # Overwrite configuration options with supplied options. Used
354 # Overwrite configuration options with supplied options. Used
355 # by subclasses.
355 # by subclasses.
356 def init_with config
356 def init_with config
357 config.each { |key, value|
357 config.each { |key, value|
358 self.send( key.to_s+"=", value ) if methods.include? key.to_s
358 self.send( key.to_s+"=", value ) if methods.include? key.to_s
359 }
359 }
360 end
360 end
361
361
362 attr_accessor :top_align, :top_font, :right_align, :right_font
362 attr_accessor :top_align, :top_font, :right_align, :right_font
363
363
364 KEY_BOX_SIZE = 12
364 KEY_BOX_SIZE = 12
365
365
366 # Override this (and call super) to change the margin to the left
366 # Override this (and call super) to change the margin to the left
367 # of the plot area. Results in @border_left being set.
367 # of the plot area. Results in @border_left being set.
368 def calculate_left_margin
368 def calculate_left_margin
369 @border_left = 7
369 @border_left = 7
370 # Check for Y labels
370 # Check for Y labels
371 max_y_label_height_px = rotate_y_labels ?
371 max_y_label_height_px = rotate_y_labels ?
372 y_label_font_size :
372 y_label_font_size :
373 get_y_labels.max{|a,b|
373 get_y_labels.max{|a,b|
374 a.to_s.length<=>b.to_s.length
374 a.to_s.length<=>b.to_s.length
375 }.to_s.length * y_label_font_size * 0.6
375 }.to_s.length * y_label_font_size * 0.6
376 @border_left += max_y_label_height_px if show_y_labels
376 @border_left += max_y_label_height_px if show_y_labels
377 @border_left += max_y_label_height_px + 10 if stagger_y_labels
377 @border_left += max_y_label_height_px + 10 if stagger_y_labels
378 @border_left += y_title_font_size + 5 if show_y_title
378 @border_left += y_title_font_size + 5 if show_y_title
379 end
379 end
380
380
381
381
382 # Calculates the width of the widest Y label. This will be the
382 # Calculates the width of the widest Y label. This will be the
383 # character height if the Y labels are rotated
383 # character height if the Y labels are rotated
384 def max_y_label_width_px
384 def max_y_label_width_px
385 return font_size if rotate_y_labels
385 return font_size if rotate_y_labels
386 end
386 end
387
387
388
388
389 # Override this (and call super) to change the margin to the right
389 # Override this (and call super) to change the margin to the right
390 # of the plot area. Results in @border_right being set.
390 # of the plot area. Results in @border_right being set.
391 def calculate_right_margin
391 def calculate_right_margin
392 @border_right = 7
392 @border_right = 7
393 if key and key_position == :right
393 if key and key_position == :right
394 val = keys.max { |a,b| a.length <=> b.length }
394 val = keys.max { |a,b| a.length <=> b.length }
395 @border_right += val.length * key_font_size * 0.7
395 @border_right += val.length * key_font_size * 0.7
396 @border_right += KEY_BOX_SIZE
396 @border_right += KEY_BOX_SIZE
397 @border_right += 10 # Some padding around the box
397 @border_right += 10 # Some padding around the box
398 end
398 end
399 end
399 end
400
400
401
401
402 # Override this (and call super) to change the margin to the top
402 # Override this (and call super) to change the margin to the top
403 # of the plot area. Results in @border_top being set.
403 # of the plot area. Results in @border_top being set.
404 def calculate_top_margin
404 def calculate_top_margin
405 @border_top = 5
405 @border_top = 5
406 @border_top += title_font_size if show_graph_title
406 @border_top += title_font_size if show_graph_title
407 @border_top += 5
407 @border_top += 5
408 @border_top += subtitle_font_size if show_graph_subtitle
408 @border_top += subtitle_font_size if show_graph_subtitle
409 end
409 end
410
410
411
411
412 # Adds pop-up point information to a graph.
412 # Adds pop-up point information to a graph.
413 def add_popup( x, y, label )
413 def add_popup( x, y, label )
414 txt_width = label.length * font_size * 0.6 + 10
414 txt_width = label.length * font_size * 0.6 + 10
415 tx = (x+txt_width > width ? x-5 : x+5)
415 tx = (x+txt_width > width ? x-5 : x+5)
416 t = @foreground.add_element( "text", {
416 t = @foreground.add_element( "text", {
417 "x" => tx.to_s,
417 "x" => tx.to_s,
418 "y" => (y - font_size).to_s,
418 "y" => (y - font_size).to_s,
419 "visibility" => "hidden",
419 "visibility" => "hidden",
420 })
420 })
421 t.attributes["style"] = "fill: #000; "+
421 t.attributes["style"] = "fill: #000; "+
422 (x+txt_width > width ? "text-anchor: end;" : "text-anchor: start;")
422 (x+txt_width > width ? "text-anchor: end;" : "text-anchor: start;")
423 t.text = label.to_s
423 t.text = label.to_s
424 t.attributes["id"] = t.id.to_s
424 t.attributes["id"] = t.id.to_s
425
425
426 @foreground.add_element( "circle", {
426 @foreground.add_element( "circle", {
427 "cx" => x.to_s,
427 "cx" => x.to_s,
428 "cy" => y.to_s,
428 "cy" => y.to_s,
429 "r" => "10",
429 "r" => "10",
430 "style" => "opacity: 0",
430 "style" => "opacity: 0",
431 "onmouseover" =>
431 "onmouseover" =>
432 "document.getElementById(#{t.id}).setAttribute('visibility', 'visible' )",
432 "document.getElementById(#{t.id}).setAttribute('visibility', 'visible' )",
433 "onmouseout" =>
433 "onmouseout" =>
434 "document.getElementById(#{t.id}).setAttribute('visibility', 'hidden' )",
434 "document.getElementById(#{t.id}).setAttribute('visibility', 'hidden' )",
435 })
435 })
436
436
437 end
437 end
438
438
439
439
440 # Override this (and call super) to change the margin to the bottom
440 # Override this (and call super) to change the margin to the bottom
441 # of the plot area. Results in @border_bottom being set.
441 # of the plot area. Results in @border_bottom being set.
442 def calculate_bottom_margin
442 def calculate_bottom_margin
443 @border_bottom = 7
443 @border_bottom = 7
444 if key and key_position == :bottom
444 if key and key_position == :bottom
445 @border_bottom += @data.size * (font_size + 5)
445 @border_bottom += @data.size * (font_size + 5)
446 @border_bottom += 10
446 @border_bottom += 10
447 end
447 end
448 if show_x_labels
448 if show_x_labels
449 max_x_label_height_px = rotate_x_labels ?
449 max_x_label_height_px = rotate_x_labels ?
450 get_x_labels.max{|a,b|
450 get_x_labels.max{|a,b|
451 a.length<=>b.length
451 a.length<=>b.length
452 }.length * x_label_font_size * 0.6 :
452 }.length * x_label_font_size * 0.6 :
453 x_label_font_size
453 x_label_font_size
454 @border_bottom += max_x_label_height_px
454 @border_bottom += max_x_label_height_px
455 @border_bottom += max_x_label_height_px + 10 if stagger_x_labels
455 @border_bottom += max_x_label_height_px + 10 if stagger_x_labels
456 end
456 end
457 @border_bottom += x_title_font_size + 5 if show_x_title
457 @border_bottom += x_title_font_size + 5 if show_x_title
458 end
458 end
459
459
460
460
461 # Draws the background, axis, and labels.
461 # Draws the background, axis, and labels.
462 def draw_graph
462 def draw_graph
463 @graph = @root.add_element( "g", {
463 @graph = @root.add_element( "g", {
464 "transform" => "translate( #@border_left #@border_top )"
464 "transform" => "translate( #@border_left #@border_top )"
465 })
465 })
466
466
467 # Background
467 # Background
468 @graph.add_element( "rect", {
468 @graph.add_element( "rect", {
469 "x" => "0",
469 "x" => "0",
470 "y" => "0",
470 "y" => "0",
471 "width" => @graph_width.to_s,
471 "width" => @graph_width.to_s,
472 "height" => @graph_height.to_s,
472 "height" => @graph_height.to_s,
473 "class" => "graphBackground"
473 "class" => "graphBackground"
474 })
474 })
475
475
476 # Axis
476 # Axis
477 @graph.add_element( "path", {
477 @graph.add_element( "path", {
478 "d" => "M 0 0 v#@graph_height",
478 "d" => "M 0 0 v#@graph_height",
479 "class" => "axis",
479 "class" => "axis",
480 "id" => "xAxis"
480 "id" => "xAxis"
481 })
481 })
482 @graph.add_element( "path", {
482 @graph.add_element( "path", {
483 "d" => "M 0 #@graph_height h#@graph_width",
483 "d" => "M 0 #@graph_height h#@graph_width",
484 "class" => "axis",
484 "class" => "axis",
485 "id" => "yAxis"
485 "id" => "yAxis"
486 })
486 })
487
487
488 draw_x_labels
488 draw_x_labels
489 draw_y_labels
489 draw_y_labels
490 end
490 end
491
491
492
492
493 # Where in the X area the label is drawn
493 # Where in the X area the label is drawn
494 # Centered in the field, should be width/2. Start, 0.
494 # Centered in the field, should be width/2. Start, 0.
495 def x_label_offset( width )
495 def x_label_offset( width )
496 0
496 0
497 end
497 end
498
498
499 def make_datapoint_text( x, y, value, style="" )
499 def make_datapoint_text( x, y, value, style="" )
500 if show_data_values
500 if show_data_values
501 @foreground.add_element( "text", {
501 @foreground.add_element( "text", {
502 "x" => x.to_s,
502 "x" => x.to_s,
503 "y" => y.to_s,
503 "y" => y.to_s,
504 "class" => "dataPointLabel",
504 "class" => "dataPointLabel",
505 "style" => "#{style} stroke: #fff; stroke-width: 2;"
505 "style" => "#{style} stroke: #fff; stroke-width: 2;"
506 }).text = value.to_s
506 }).text = value.to_s
507 text = @foreground.add_element( "text", {
507 text = @foreground.add_element( "text", {
508 "x" => x.to_s,
508 "x" => x.to_s,
509 "y" => y.to_s,
509 "y" => y.to_s,
510 "class" => "dataPointLabel"
510 "class" => "dataPointLabel"
511 })
511 })
512 text.text = value.to_s
512 text.text = value.to_s
513 text.attributes["style"] = style if style.length > 0
513 text.attributes["style"] = style if style.length > 0
514 end
514 end
515 end
515 end
516
516
517
517
518 # Draws the X axis labels
518 # Draws the X axis labels
519 def draw_x_labels
519 def draw_x_labels
520 stagger = x_label_font_size + 5
520 stagger = x_label_font_size + 5
521 if show_x_labels
521 if show_x_labels
522 label_width = field_width
522 label_width = field_width
523
523
524 count = 0
524 count = 0
525 for label in get_x_labels
525 for label in get_x_labels
526 if step_include_first_x_label == true then
526 if step_include_first_x_label == true then
527 step = count % step_x_labels
527 step = count % step_x_labels
528 else
528 else
529 step = (count + 1) % step_x_labels
529 step = (count + 1) % step_x_labels
530 end
530 end
531
531
532 if step == 0 then
532 if step == 0 then
533 text = @graph.add_element( "text" )
533 text = @graph.add_element( "text" )
534 text.attributes["class"] = "xAxisLabels"
534 text.attributes["class"] = "xAxisLabels"
535 text.text = label.to_s
535 text.text = label.to_s
536
536
537 x = count * label_width + x_label_offset( label_width )
537 x = count * label_width + x_label_offset( label_width )
538 y = @graph_height + x_label_font_size + 3
538 y = @graph_height + x_label_font_size + 3
539 t = 0 - (font_size / 2)
539 t = 0 - (font_size / 2)
540
540
541 if stagger_x_labels and count % 2 == 1
541 if stagger_x_labels and count % 2 == 1
542 y += stagger
542 y += stagger
543 @graph.add_element( "path", {
543 @graph.add_element( "path", {
544 "d" => "M#{x} #@graph_height v#{stagger}",
544 "d" => "M#{x} #@graph_height v#{stagger}",
545 "class" => "staggerGuideLine"
545 "class" => "staggerGuideLine"
546 })
546 })
547 end
547 end
548
548
549 text.attributes["x"] = x.to_s
549 text.attributes["x"] = x.to_s
550 text.attributes["y"] = y.to_s
550 text.attributes["y"] = y.to_s
551 if rotate_x_labels
551 if rotate_x_labels
552 text.attributes["transform"] =
552 text.attributes["transform"] =
553 "rotate( 90 #{x} #{y-x_label_font_size} )"+
553 "rotate( 90 #{x} #{y-x_label_font_size} )"+
554 " translate( 0 -#{x_label_font_size/4} )"
554 " translate( 0 -#{x_label_font_size/4} )"
555 text.attributes["style"] = "text-anchor: start"
555 text.attributes["style"] = "text-anchor: start"
556 else
556 else
557 text.attributes["style"] = "text-anchor: middle"
557 text.attributes["style"] = "text-anchor: middle"
558 end
558 end
559 end
559 end
560
560
561 draw_x_guidelines( label_width, count ) if show_x_guidelines
561 draw_x_guidelines( label_width, count ) if show_x_guidelines
562 count += 1
562 count += 1
563 end
563 end
564 end
564 end
565 end
565 end
566
566
567
567
568 # Where in the Y area the label is drawn
568 # Where in the Y area the label is drawn
569 # Centered in the field, should be width/2. Start, 0.
569 # Centered in the field, should be width/2. Start, 0.
570 def y_label_offset( height )
570 def y_label_offset( height )
571 0
571 0
572 end
572 end
573
573
574
574
575 def field_width
575 def field_width
576 (@graph_width.to_f - font_size*2*right_font) /
576 (@graph_width.to_f - font_size*2*right_font) /
577 (get_x_labels.length - right_align)
577 (get_x_labels.length - right_align)
578 end
578 end
579
579
580
580
581 def field_height
581 def field_height
582 (@graph_height.to_f - font_size*2*top_font) /
582 (@graph_height.to_f - font_size*2*top_font) /
583 (get_y_labels.length - top_align)
583 (get_y_labels.length - top_align)
584 end
584 end
585
585
586
586
587 # Draws the Y axis labels
587 # Draws the Y axis labels
588 def draw_y_labels
588 def draw_y_labels
589 stagger = y_label_font_size + 5
589 stagger = y_label_font_size + 5
590 if show_y_labels
590 if show_y_labels
591 label_height = field_height
591 label_height = field_height
592
592
593 count = 0
593 count = 0
594 y_offset = @graph_height + y_label_offset( label_height )
594 y_offset = @graph_height + y_label_offset( label_height )
595 y_offset += font_size/1.2 unless rotate_y_labels
595 y_offset += font_size/1.2 unless rotate_y_labels
596 for label in get_y_labels
596 for label in get_y_labels
597 y = y_offset - (label_height * count)
597 y = y_offset - (label_height * count)
598 x = rotate_y_labels ? 0 : -3
598 x = rotate_y_labels ? 0 : -3
599
599
600 if stagger_y_labels and count % 2 == 1
600 if stagger_y_labels and count % 2 == 1
601 x -= stagger
601 x -= stagger
602 @graph.add_element( "path", {
602 @graph.add_element( "path", {
603 "d" => "M#{x} #{y} h#{stagger}",
603 "d" => "M#{x} #{y} h#{stagger}",
604 "class" => "staggerGuideLine"
604 "class" => "staggerGuideLine"
605 })
605 })
606 end
606 end
607
607
608 text = @graph.add_element( "text", {
608 text = @graph.add_element( "text", {
609 "x" => x.to_s,
609 "x" => x.to_s,
610 "y" => y.to_s,
610 "y" => y.to_s,
611 "class" => "yAxisLabels"
611 "class" => "yAxisLabels"
612 })
612 })
613 text.text = label.to_s
613 text.text = label.to_s
614 if rotate_y_labels
614 if rotate_y_labels
615 text.attributes["transform"] = "translate( -#{font_size} 0 ) "+
615 text.attributes["transform"] = "translate( -#{font_size} 0 ) "+
616 "rotate( 90 #{x} #{y} ) "
616 "rotate( 90 #{x} #{y} ) "
617 text.attributes["style"] = "text-anchor: middle"
617 text.attributes["style"] = "text-anchor: middle"
618 else
618 else
619 text.attributes["y"] = (y - (y_label_font_size/2)).to_s
619 text.attributes["y"] = (y - (y_label_font_size/2)).to_s
620 text.attributes["style"] = "text-anchor: end"
620 text.attributes["style"] = "text-anchor: end"
621 end
621 end
622 draw_y_guidelines( label_height, count ) if show_y_guidelines
622 draw_y_guidelines( label_height, count ) if show_y_guidelines
623 count += 1
623 count += 1
624 end
624 end
625 end
625 end
626 end
626 end
627
627
628
628
629 # Draws the X axis guidelines
629 # Draws the X axis guidelines
630 def draw_x_guidelines( label_height, count )
630 def draw_x_guidelines( label_height, count )
631 if count != 0
631 if count != 0
632 @graph.add_element( "path", {
632 @graph.add_element( "path", {
633 "d" => "M#{label_height*count} 0 v#@graph_height",
633 "d" => "M#{label_height*count} 0 v#@graph_height",
634 "class" => "guideLines"
634 "class" => "guideLines"
635 })
635 })
636 end
636 end
637 end
637 end
638
638
639
639
640 # Draws the Y axis guidelines
640 # Draws the Y axis guidelines
641 def draw_y_guidelines( label_height, count )
641 def draw_y_guidelines( label_height, count )
642 if count != 0
642 if count != 0
643 @graph.add_element( "path", {
643 @graph.add_element( "path", {
644 "d" => "M0 #{@graph_height-(label_height*count)} h#@graph_width",
644 "d" => "M0 #{@graph_height-(label_height*count)} h#@graph_width",
645 "class" => "guideLines"
645 "class" => "guideLines"
646 })
646 })
647 end
647 end
648 end
648 end
649
649
650
650
651 # Draws the graph title and subtitle
651 # Draws the graph title and subtitle
652 def draw_titles
652 def draw_titles
653 if show_graph_title
653 if show_graph_title
654 @root.add_element( "text", {
654 @root.add_element( "text", {
655 "x" => (width / 2).to_s,
655 "x" => (width / 2).to_s,
656 "y" => (title_font_size).to_s,
656 "y" => (title_font_size).to_s,
657 "class" => "mainTitle"
657 "class" => "mainTitle"
658 }).text = graph_title.to_s
658 }).text = graph_title.to_s
659 end
659 end
660
660
661 if show_graph_subtitle
661 if show_graph_subtitle
662 y_subtitle = show_graph_title ?
662 y_subtitle = show_graph_title ?
663 title_font_size + 10 :
663 title_font_size + 10 :
664 subtitle_font_size
664 subtitle_font_size
665 @root.add_element("text", {
665 @root.add_element("text", {
666 "x" => (width / 2).to_s,
666 "x" => (width / 2).to_s,
667 "y" => (y_subtitle).to_s,
667 "y" => (y_subtitle).to_s,
668 "class" => "subTitle"
668 "class" => "subTitle"
669 }).text = graph_subtitle.to_s
669 }).text = graph_subtitle.to_s
670 end
670 end
671
671
672 if show_x_title
672 if show_x_title
673 y = @graph_height + @border_top + x_title_font_size
673 y = @graph_height + @border_top + x_title_font_size
674 if show_x_labels
674 if show_x_labels
675 y += x_label_font_size + 5 if stagger_x_labels
675 y += x_label_font_size + 5 if stagger_x_labels
676 y += x_label_font_size + 5
676 y += x_label_font_size + 5
677 end
677 end
678 x = width / 2
678 x = width / 2
679
679
680 @root.add_element("text", {
680 @root.add_element("text", {
681 "x" => x.to_s,
681 "x" => x.to_s,
682 "y" => y.to_s,
682 "y" => y.to_s,
683 "class" => "xAxisTitle",
683 "class" => "xAxisTitle",
684 }).text = x_title.to_s
684 }).text = x_title.to_s
685 end
685 end
686
686
687 if show_y_title
687 if show_y_title
688 x = y_title_font_size + (y_title_text_direction==:bt ? 3 : -3)
688 x = y_title_font_size + (y_title_text_direction==:bt ? 3 : -3)
689 y = height / 2
689 y = height / 2
690
690
691 text = @root.add_element("text", {
691 text = @root.add_element("text", {
692 "x" => x.to_s,
692 "x" => x.to_s,
693 "y" => y.to_s,
693 "y" => y.to_s,
694 "class" => "yAxisTitle",
694 "class" => "yAxisTitle",
695 })
695 })
696 text.text = y_title.to_s
696 text.text = y_title.to_s
697 if y_title_text_direction == :bt
697 if y_title_text_direction == :bt
698 text.attributes["transform"] = "rotate( -90, #{x}, #{y} )"
698 text.attributes["transform"] = "rotate( -90, #{x}, #{y} )"
699 else
699 else
700 text.attributes["transform"] = "rotate( 90, #{x}, #{y} )"
700 text.attributes["transform"] = "rotate( 90, #{x}, #{y} )"
701 end
701 end
702 end
702 end
703 end
703 end
704
704
705 def keys
705 def keys
706 return @data.collect{ |d| d[:title] }
706 return @data.collect{ |d| d[:title] }
707 end
707 end
708
708
709 # Draws the legend on the graph
709 # Draws the legend on the graph
710 def draw_legend
710 def draw_legend
711 if key
711 if key
712 group = @root.add_element( "g" )
712 group = @root.add_element( "g" )
713
713
714 key_count = 0
714 key_count = 0
715 for key_name in keys
715 for key_name in keys
716 y_offset = (KEY_BOX_SIZE * key_count) + (key_count * 5)
716 y_offset = (KEY_BOX_SIZE * key_count) + (key_count * 5)
717 group.add_element( "rect", {
717 group.add_element( "rect", {
718 "x" => 0.to_s,
718 "x" => 0.to_s,
719 "y" => y_offset.to_s,
719 "y" => y_offset.to_s,
720 "width" => KEY_BOX_SIZE.to_s,
720 "width" => KEY_BOX_SIZE.to_s,
721 "height" => KEY_BOX_SIZE.to_s,
721 "height" => KEY_BOX_SIZE.to_s,
722 "class" => "key#{key_count+1}"
722 "class" => "key#{key_count+1}"
723 })
723 })
724 group.add_element( "text", {
724 group.add_element( "text", {
725 "x" => (KEY_BOX_SIZE + 5).to_s,
725 "x" => (KEY_BOX_SIZE + 5).to_s,
726 "y" => (y_offset + KEY_BOX_SIZE - 2).to_s,
726 "y" => (y_offset + KEY_BOX_SIZE - 2).to_s,
727 "class" => "keyText"
727 "class" => "keyText"
728 }).text = key_name.to_s
728 }).text = key_name.to_s
729 key_count += 1
729 key_count += 1
730 end
730 end
731
731
732 case key_position
732 case key_position
733 when :right
733 when :right
734 x_offset = @graph_width + @border_left + 10
734 x_offset = @graph_width + @border_left + 10
735 y_offset = @border_top + 20
735 y_offset = @border_top + 20
736 when :bottom
736 when :bottom
737 x_offset = @border_left + 20
737 x_offset = @border_left + 20
738 y_offset = @border_top + @graph_height + 5
738 y_offset = @border_top + @graph_height + 5
739 if show_x_labels
739 if show_x_labels
740 max_x_label_height_px = rotate_x_labels ?
740 max_x_label_height_px = rotate_x_labels ?
741 get_x_labels.max{|a,b|
741 get_x_labels.max{|a,b|
742 a.length<=>b.length
742 a.length<=>b.length
743 }.length * x_label_font_size :
743 }.length * x_label_font_size :
744 x_label_font_size
744 x_label_font_size
745 y_offset += max_x_label_height_px
745 y_offset += max_x_label_height_px
746 y_offset += max_x_label_height_px + 5 if stagger_x_labels
746 y_offset += max_x_label_height_px + 5 if stagger_x_labels
747 end
747 end
748 y_offset += x_title_font_size + 5 if show_x_title
748 y_offset += x_title_font_size + 5 if show_x_title
749 end
749 end
750 group.attributes["transform"] = "translate(#{x_offset} #{y_offset})"
750 group.attributes["transform"] = "translate(#{x_offset} #{y_offset})"
751 end
751 end
752 end
752 end
753
753
754
754
755 private
755 private
756
756
757 def sort_multiple( arrys, lo=0, hi=arrys[0].length-1 )
757 def sort_multiple( arrys, lo=0, hi=arrys[0].length-1 )
758 if lo < hi
758 if lo < hi
759 p = partition(arrys,lo,hi)
759 p = partition(arrys,lo,hi)
760 sort_multiple(arrys, lo, p-1)
760 sort_multiple(arrys, lo, p-1)
761 sort_multiple(arrys, p+1, hi)
761 sort_multiple(arrys, p+1, hi)
762 end
762 end
763 arrys
763 arrys
764 end
764 end
765
765
766 def partition( arrys, lo, hi )
766 def partition( arrys, lo, hi )
767 p = arrys[0][lo]
767 p = arrys[0][lo]
768 l = lo
768 l = lo
769 z = lo+1
769 z = lo+1
770 while z <= hi
770 while z <= hi
771 if arrys[0][z] < p
771 if arrys[0][z] < p
772 l += 1
772 l += 1
773 arrys.each { |arry| arry[z], arry[l] = arry[l], arry[z] }
773 arrys.each { |arry| arry[z], arry[l] = arry[l], arry[z] }
774 end
774 end
775 z += 1
775 z += 1
776 end
776 end
777 arrys.each { |arry| arry[lo], arry[l] = arry[l], arry[lo] }
777 arrys.each { |arry| arry[lo], arry[l] = arry[l], arry[lo] }
778 l
778 l
779 end
779 end
780
780
781 def style
781 def style
782 if no_css
782 if no_css
783 styles = parse_css
783 styles = parse_css
784 @root.elements.each("//*[@class]") { |el|
784 @root.elements.each("//*[@class]") { |el|
785 cl = el.attributes["class"]
785 cl = el.attributes["class"]
786 style = styles[cl]
786 style = styles[cl]
787 style += el.attributes["style"] if el.attributes["style"]
787 style += el.attributes["style"] if el.attributes["style"]
788 el.attributes["style"] = style
788 el.attributes["style"] = style
789 }
789 }
790 end
790 end
791 end
791 end
792
792
793 def parse_css
793 def parse_css
794 css = get_style
794 css = get_style
795 rv = {}
795 rv = {}
796 while css =~ /^(\.(\w+)(?:\s*,\s*\.\w+)*)\s*\{/m
796 while css =~ /^(\.(\w+)(?:\s*,\s*\.\w+)*)\s*\{/m
797 names_orig = names = $1
797 names_orig = names = $1
798 css = $'
798 css = $'
799 css =~ /([^}]+)\}/m
799 css =~ /([^}]+)\}/m
800 content = $1
800 content = $1
801 css = $'
801 css = $'
802
802
803 nms = []
803 nms = []
804 while names =~ /^\s*,?\s*\.(\w+)/
804 while names =~ /^\s*,?\s*\.(\w+)/
805 nms << $1
805 nms << $1
806 names = $'
806 names = $'
807 end
807 end
808
808
809 content = content.tr( "\n\t", " ")
809 content = content.tr( "\n\t", " ")
810 for name in nms
810 for name in nms
811 current = rv[name]
811 current = rv[name]
812 current = current ? current+"; "+content : content
812 current = current ? current+"; "+content : content
813 rv[name] = current.strip.squeeze(" ")
813 rv[name] = current.strip.squeeze(" ")
814 end
814 end
815 end
815 end
816 return rv
816 return rv
817 end
817 end
818
818
819
819
820 # Override and place code to add defs here
820 # Override and place code to add defs here
821 def add_defs defs
821 def add_defs defs
822 end
822 end
823
823
824
824
825 def start_svg
825 def start_svg
826 # Base document
826 # Base document
827 @doc = Document.new
827 @doc = Document.new
828 @doc << XMLDecl.new
828 @doc << XMLDecl.new
829 @doc << DocType.new( %q{svg PUBLIC "-//W3C//DTD SVG 1.0//EN" } +
829 @doc << DocType.new( %q{svg PUBLIC "-//W3C//DTD SVG 1.0//EN" } +
830 %q{"http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd"} )
830 %q{"http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd"} )
831 if style_sheet && style_sheet != ''
831 if style_sheet && style_sheet != ''
832 @doc << ProcessingInstruction.new( "xml-stylesheet",
832 @doc << Instruction.new( "xml-stylesheet",
833 %Q{href="#{style_sheet}" type="text/css"} )
833 %Q{href="#{style_sheet}" type="text/css"} )
834 end
834 end
835 @root = @doc.add_element( "svg", {
835 @root = @doc.add_element( "svg", {
836 "width" => width.to_s,
836 "width" => width.to_s,
837 "height" => height.to_s,
837 "height" => height.to_s,
838 "viewBox" => "0 0 #{width} #{height}",
838 "viewBox" => "0 0 #{width} #{height}",
839 "xmlns" => "http://www.w3.org/2000/svg",
839 "xmlns" => "http://www.w3.org/2000/svg",
840 "xmlns:xlink" => "http://www.w3.org/1999/xlink",
840 "xmlns:xlink" => "http://www.w3.org/1999/xlink",
841 "xmlns:a3" => "http://ns.adobe.com/AdobeSVGViewerExtensions/3.0/",
841 "xmlns:a3" => "http://ns.adobe.com/AdobeSVGViewerExtensions/3.0/",
842 "a3:scriptImplementation" => "Adobe"
842 "a3:scriptImplementation" => "Adobe"
843 })
843 })
844 @root << Comment.new( " "+"\\"*66 )
844 @root << Comment.new( " "+"\\"*66 )
845 @root << Comment.new( " Created with SVG::Graph " )
845 @root << Comment.new( " Created with SVG::Graph " )
846 @root << Comment.new( " SVG::Graph by Sean E. Russell " )
846 @root << Comment.new( " SVG::Graph by Sean E. Russell " )
847 @root << Comment.new( " Losely based on SVG::TT::Graph for Perl by"+
847 @root << Comment.new( " Losely based on SVG::TT::Graph for Perl by"+
848 " Leo Lapworth & Stephan Morgan " )
848 " Leo Lapworth & Stephan Morgan " )
849 @root << Comment.new( " "+"/"*66 )
849 @root << Comment.new( " "+"/"*66 )
850
850
851 defs = @root.add_element( "defs" )
851 defs = @root.add_element( "defs" )
852 add_defs defs
852 add_defs defs
853 if not(style_sheet && style_sheet != '') and !no_css
853 if not(style_sheet && style_sheet != '') and !no_css
854 @root << Comment.new(" include default stylesheet if none specified ")
854 @root << Comment.new(" include default stylesheet if none specified ")
855 style = defs.add_element( "style", {"type"=>"text/css"} )
855 style = defs.add_element( "style", {"type"=>"text/css"} )
856 style << CData.new( get_style )
856 style << CData.new( get_style )
857 end
857 end
858
858
859 @root << Comment.new( "SVG Background" )
859 @root << Comment.new( "SVG Background" )
860 @root.add_element( "rect", {
860 @root.add_element( "rect", {
861 "width" => width.to_s,
861 "width" => width.to_s,
862 "height" => height.to_s,
862 "height" => height.to_s,
863 "x" => "0",
863 "x" => "0",
864 "y" => "0",
864 "y" => "0",
865 "class" => "svgBackground"
865 "class" => "svgBackground"
866 })
866 })
867 end
867 end
868
868
869
869
870 def calculate_graph_dimensions
870 def calculate_graph_dimensions
871 calculate_left_margin
871 calculate_left_margin
872 calculate_right_margin
872 calculate_right_margin
873 calculate_bottom_margin
873 calculate_bottom_margin
874 calculate_top_margin
874 calculate_top_margin
875 @graph_width = width - @border_left - @border_right
875 @graph_width = width - @border_left - @border_right
876 @graph_height = height - @border_top - @border_bottom
876 @graph_height = height - @border_top - @border_bottom
877 end
877 end
878
878
879 def get_style
879 def get_style
880 return <<EOL
880 return <<EOL
881 /* Copy from here for external style sheet */
881 /* Copy from here for external style sheet */
882 .svgBackground{
882 .svgBackground{
883 fill:#ffffff;
883 fill:#ffffff;
884 }
884 }
885 .graphBackground{
885 .graphBackground{
886 fill:#f5f5f5;
886 fill:#f5f5f5;
887 }
887 }
888
888
889 /* graphs titles */
889 /* graphs titles */
890 .mainTitle{
890 .mainTitle{
891 text-anchor: middle;
891 text-anchor: middle;
892 fill: #555555;
892 fill: #555555;
893 font-size: #{title_font_size}px;
893 font-size: #{title_font_size}px;
894 font-family: "Verdana", sans-serif;
894 font-family: "Verdana", sans-serif;
895 font-weight: bold;
895 font-weight: bold;
896 }
896 }
897 .subTitle{
897 .subTitle{
898 text-anchor: middle;
898 text-anchor: middle;
899 fill: #999999;
899 fill: #999999;
900 font-size: #{subtitle_font_size}px;
900 font-size: #{subtitle_font_size}px;
901 font-family: "Verdana", sans-serif;
901 font-family: "Verdana", sans-serif;
902 font-weight: normal;
902 font-weight: normal;
903 }
903 }
904
904
905 .axis{
905 .axis{
906 stroke: #666666;
906 stroke: #666666;
907 stroke-width: 1px;
907 stroke-width: 1px;
908 }
908 }
909
909
910 .guideLines{
910 .guideLines{
911 stroke: #666666;
911 stroke: #666666;
912 stroke-width: 1px;
912 stroke-width: 1px;
913 stroke-dasharray:2,2,2;
913 stroke-dasharray:2,2,2;
914 }
914 }
915
915
916 .xAxisLabels{
916 .xAxisLabels{
917 text-anchor: middle;
917 text-anchor: middle;
918 fill: #000000;
918 fill: #000000;
919 font-size: #{x_label_font_size}px;
919 font-size: #{x_label_font_size}px;
920 font-family: "Verdana", sans-serif;
920 font-family: "Verdana", sans-serif;
921 font-weight: normal;
921 font-weight: normal;
922 }
922 }
923
923
924 .yAxisLabels{
924 .yAxisLabels{
925 text-anchor: end;
925 text-anchor: end;
926 fill: #000000;
926 fill: #000000;
927 font-size: #{y_label_font_size}px;
927 font-size: #{y_label_font_size}px;
928 font-family: "Verdana", sans-serif;
928 font-family: "Verdana", sans-serif;
929 font-weight: normal;
929 font-weight: normal;
930 }
930 }
931
931
932 .xAxisTitle{
932 .xAxisTitle{
933 text-anchor: middle;
933 text-anchor: middle;
934 fill: #ff0000;
934 fill: #ff0000;
935 font-size: #{x_title_font_size}px;
935 font-size: #{x_title_font_size}px;
936 font-family: "Verdana", sans-serif;
936 font-family: "Verdana", sans-serif;
937 font-weight: normal;
937 font-weight: normal;
938 }
938 }
939
939
940 .yAxisTitle{
940 .yAxisTitle{
941 fill: #ff0000;
941 fill: #ff0000;
942 text-anchor: middle;
942 text-anchor: middle;
943 font-size: #{y_title_font_size}px;
943 font-size: #{y_title_font_size}px;
944 font-family: "Verdana", sans-serif;
944 font-family: "Verdana", sans-serif;
945 font-weight: normal;
945 font-weight: normal;
946 }
946 }
947
947
948 .dataPointLabel{
948 .dataPointLabel{
949 fill: #000000;
949 fill: #000000;
950 text-anchor:middle;
950 text-anchor:middle;
951 font-size: 10px;
951 font-size: 10px;
952 font-family: "Verdana", sans-serif;
952 font-family: "Verdana", sans-serif;
953 font-weight: normal;
953 font-weight: normal;
954 }
954 }
955
955
956 .staggerGuideLine{
956 .staggerGuideLine{
957 fill: none;
957 fill: none;
958 stroke: #000000;
958 stroke: #000000;
959 stroke-width: 0.5px;
959 stroke-width: 0.5px;
960 }
960 }
961
961
962 #{get_css}
962 #{get_css}
963
963
964 .keyText{
964 .keyText{
965 fill: #000000;
965 fill: #000000;
966 text-anchor:start;
966 text-anchor:start;
967 font-size: #{key_font_size}px;
967 font-size: #{key_font_size}px;
968 font-family: "Verdana", sans-serif;
968 font-family: "Verdana", sans-serif;
969 font-weight: normal;
969 font-weight: normal;
970 }
970 }
971 /* End copy for external style sheet */
971 /* End copy for external style sheet */
972 EOL
972 EOL
973 end
973 end
974
974
975 end
975 end
976 end
976 end
977 end
977 end
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