allow the user to specifiy min and max y values instead of a padding
[imager-graph.git] / lib / Imager / Graph / Vertical.pm
CommitLineData
2eac77fc 1package Imager::Graph::Vertical;
2
3=head1 NAME
4
5 Imager::Graph::Vertical- A super class for line/bar/column charts
6
7=cut
8
9use strict;
10use vars qw(@ISA);
11use Imager::Graph;
12@ISA = qw(Imager::Graph);
13
23a3585a 14use constant STARTING_MIN_VALUE => 99999;
2eac77fc 15=over 4
16
17=item add_data_series(\@data, $series_name)
18
19Add a data series to the graph, of the default type.
20
21=cut
22
23sub add_data_series {
24 my $self = shift;
25 my $data_ref = shift;
26 my $series_name = shift;
27
28 my $series_type = $self->_get_default_series_type();
29 $self->_add_data_series($series_type, $data_ref, $series_name);
30
31 return;
32}
33
34=item add_column_data_series(\@data, $series_name)
35
36Add a column data series to the graph.
37
38=cut
39
40sub add_column_data_series {
41 my $self = shift;
42 my $data_ref = shift;
43 my $series_name = shift;
44
45 $self->_add_data_series('column', $data_ref, $series_name);
46
47 return;
48}
49
50=item add_stacked_column_data_series(\@data, $series_name)
51
52Add a stacked column data series to the graph.
53
54=cut
55
56sub add_stacked_column_data_series {
57 my $self = shift;
58 my $data_ref = shift;
59 my $series_name = shift;
60
61 $self->_add_data_series('stacked_column', $data_ref, $series_name);
62
63 return;
64}
65
66=item add_line_data_series(\@data, $series_name)
67
68Add a line data series to the graph.
69
70=cut
71
72sub add_line_data_series {
73 my $self = shift;
74 my $data_ref = shift;
75 my $series_name = shift;
76
77 $self->_add_data_series('line', $data_ref, $series_name);
78
79 return;
80}
81
23a3585a
TC
82=item set_y_max($value)
83
84Sets the maximum y value to be displayed. This will be ignored if the y_max is lower than the highest value.
85
86=cut
87
88sub set_y_max {
89 $_[0]->{'custom_style'}->{'y_max'} = $_[1];
90}
91
92=item set_y_min($value)
93
94Sets the minimum y value to be displayed. This will be ignored if the y_min is higher than the lowest value.
95
96=cut
97
98sub set_y_min {
99 $_[0]->{'custom_style'}->{'y_min'} = $_[1];
100}
101
2eac77fc 102=item set_range_padding($percentage)
103
104Sets the padding to be used, as a percentage. For example, if your data ranges from 0 to 10, and you have a 20 percent padding, the y axis will go to 12.
105
23a3585a 106Defaults to 10. This attribute is ignored for positive numbers if set_y_max() has been called, and ignored for negative numbers if set_y_min() has been called.
2eac77fc 107
108=cut
109
110sub set_range_padding {
111 $_[0]->{'custom_style'}->{'range_padding'} = $_[1];
112}
113
23a3585a
TC
114=item set_negative_background($color)
115
116Sets the background color used below the x axis.
117
118=cut
119
120sub set_negative_background {
121 $_[0]->{'custom_style'}->{'negative_bg'} = $_[1];
122}
123
2eac77fc 124=item draw()
125
126Draw the graph
127
128=cut
129
130sub draw {
131 my ($self, %opts) = @_;
132
133 if (!$self->_valid_input()) {
134 return;
135 }
136
137 $self->_style_setup(\%opts);
138
139 my $style = $self->{_style};
140
141 my $img = $self->_get_image()
142 or return;
143
144 my @image_box = ( 0, 0, $img->getwidth-1, $img->getheight-1 );
145 $self->_set_image_box(\@image_box);
146
147 # Scale the graph box down to the widest graph that can cleanly hold the # of columns.
148 $self->_get_data_range();
149 my $column_count = $self->_get_column_count();
150
151 my $width = $self->_get_number('width');
152 my $height = $self->_get_number('height');
153 my $size = $self->_get_number('size');
154
155 my $bottom = ($height - $size) / 2;
156 my $left = ($width - $size) / 2;
157
158 my $col_width = int($size / $column_count) -1;
159 my $graph_width = $col_width * $column_count + 1;
160
161 my @graph_box = ( $left, $bottom, $left + $graph_width - 1, $bottom + $size - 1 );
162 $self->_set_graph_box(\@graph_box);
163
164 $self->_draw_legend();
165
166 $img->box(
167 color => $self->_get_color('outline.line'),
168 xmin => $left,
169 xmax => $left+$graph_width,
170 ymin => $bottom,
171 ymax => $bottom+$size,
172 );
173
174 $img->box(
175 color => $self->_get_color('bg'),
176 xmin => $left + 1,
177 xmax => $left+$graph_width - 1,
178 ymin => $bottom + 1,
179 ymax => $bottom+$size -1 ,
180 filled => 1,
181 );
182
183 my $min_value = $self->_get_min_value();
184 my $max_value = $self->_get_max_value();
185 my $value_range = $max_value - $min_value;
186
187 my $zero_position;
188 if ($value_range) {
189 $zero_position = $bottom + $size - (-1*$min_value / $value_range) * ($size -1);
190 }
191
192 if ($min_value < 0) {
193 $img->box(
194 color => $self->_get_color('negative_bg'),
195 xmin => $left + 1,
196 xmax => $left+$graph_width- 1,
197 ymin => $zero_position,
198 ymax => $bottom+$size -1,
199 filled => 1,
200 );
201 $img->line(
202 x1 => $left+1,
203 y1 => $zero_position,
204 x2 => $left + $graph_width,
205 y2 => $zero_position,
206 color => $self->_get_color('outline.line'),
207 );
208 }
209
210 if ($self->_get_data_series()->{'stacked_column'}) {
211 $self->_draw_stacked_columns();
212 }
213 if ($self->_get_data_series()->{'column'}) {
214 $self->_draw_columns();
215 }
216 if ($self->_get_data_series()->{'line'}) {
217 $self->_draw_lines();
218 }
219 return $self->_get_image();
220}
221
222sub _get_data_range {
223 my $self = shift;
224
225 my $max_value = 0;
226 my $min_value = 0;
227 my $column_count = 0;
228
229 my ($sc_min, $sc_max, $sc_cols) = $self->_get_stacked_column_range();
230 my ($c_min, $c_max, $c_cols) = $self->_get_column_range();
231 my ($l_min, $l_max, $l_cols) = $self->_get_line_range();
232
233 # These are side by side...
234 $sc_cols += $c_cols;
235
23a3585a 236 $min_value = $self->_min(STARTING_MIN_VALUE, $sc_min, $c_min, $l_min);
2eac77fc 237 $max_value = $self->_max(0, $sc_max, $c_max, $l_max);
238
23a3585a
TC
239 my $config_min = $self->_get_number('y_min');
240 my $config_max = $self->_get_number('y_max');
241
242 if (defined $config_max && $config_max < $max_value) {
243 $config_max = undef;
244 }
245 if (defined $config_min && $config_min > $min_value) {
246 $config_min = undef;
247 }
248
2eac77fc 249 my $range_padding = $self->_get_number('range_padding');
250 if (!defined $range_padding) {
251 $range_padding = 10;
252 }
23a3585a
TC
253 if (defined $config_min) {
254 $min_value = $config_min;
255 }
256 else {
257 if ($min_value > 0) {
258 $min_value = 0;
259 }
260 if ($range_padding && $min_value < 0) {
261 my $difference = $min_value * $range_padding / 100;
262 if ($min_value < -1 && $difference > -1) {
263 $difference = -1;
264 }
265 $min_value += $difference;
2eac77fc 266 }
2eac77fc 267 }
23a3585a
TC
268 if (defined $config_max) {
269 $max_value = $config_max;
270 }
271 else {
272 if ($range_padding && $max_value > 0) {
273 my $difference = $max_value * $range_padding / 100;
274 if ($max_value > 1 && $difference < 1) {
275 $difference = 1;
276 }
277 $max_value += $difference;
2eac77fc 278 }
2eac77fc 279 }
2eac77fc 280 $column_count = $self->_max(0, $sc_cols, $l_cols);
281
282 $self->_set_max_value($max_value);
283 $self->_set_min_value($min_value);
284 $self->_set_column_count($column_count);
285}
286
287sub _min {
288 my $self = shift;
289 my $min = shift;
290
291 foreach my $value (@_) {
23a3585a 292 next unless defined $value;
2eac77fc 293 if ($value < $min) { $min = $value; }
294 }
295 return $min;
296}
297
298sub _max {
299 my $self = shift;
300 my $min = shift;
301
302 foreach my $value (@_) {
23a3585a 303 next unless defined $value;
2eac77fc 304 if ($value > $min) { $min = $value; }
305 }
306 return $min;
307}
308
309sub _get_line_range {
310 my $self = shift;
311 my $series = $self->_get_data_series()->{'line'};
23a3585a 312 return (undef, undef, 0) unless $series;
2eac77fc 313
314 my $max_value = 0;
23a3585a 315 my $min_value = STARTING_MIN_VALUE;
2eac77fc 316 my $column_count = 0;
317
318 my @series = @{$series};
319 foreach my $series (@series) {
320 my @data = @{$series->{'data'}};
321
322 if (scalar @data > $column_count) {
323 $column_count = scalar @data;
324 }
325
326 foreach my $value (@data) {
327 if ($value > $max_value) { $max_value = $value; }
328 if ($value < $min_value) { $min_value = $value; }
329 }
330 }
331
332 return ($min_value, $max_value, $column_count);
333}
334
335sub _get_column_range {
336 my $self = shift;
337
338 my $series = $self->_get_data_series()->{'column'};
23a3585a 339 return (undef, undef, 0) unless $series;
2eac77fc 340
341 my $max_value = 0;
23a3585a 342 my $min_value = STARTING_MIN_VALUE;
2eac77fc 343 my $column_count = 0;
344
345 my @series = @{$series};
346 foreach my $series (@series) {
347 my @data = @{$series->{'data'}};
348
349 foreach my $value (@data) {
350 $column_count++;
351 if ($value > $max_value) { $max_value = $value; }
352 if ($value < $min_value) { $min_value = $value; }
353 }
354 }
355
356 return ($min_value, $max_value, $column_count);
357}
358
359sub _get_stacked_column_range {
360 my $self = shift;
361
362 my $max_value = 0;
23a3585a 363 my $min_value = STARTING_MIN_VALUE;
2eac77fc 364 my $column_count = 0;
365
23a3585a 366 return (undef, undef, 0) unless $self->_get_data_series()->{'stacked_column'};
2eac77fc 367 my @series = @{$self->_get_data_series()->{'stacked_column'}};
368
369 my @max_entries;
370 my @min_entries;
371 for (my $i = scalar @series - 1; $i >= 0; $i--) {
372 my $series = $series[$i];
373 my $data = $series->{'data'};
374
375 for (my $i = 0; $i < scalar @$data; $i++) {
376 my $value = 0;
377 if ($data->[$i] > 0) {
378 $value = $data->[$i] + ($max_entries[$i] || 0);
379 $data->[$i] = $value;
380 $max_entries[$i] = $value;
381 }
382 elsif ($data->[$i] < 0) {
383 $value = $data->[$i] + ($min_entries[$i] || 0);
384 $data->[$i] = $value;
385 $min_entries[$i] = $value;
386 }
387 if ($value > $max_value) { $max_value = $value; }
388 if ($value < $min_value) { $min_value = $value; }
389 }
390 if (scalar @$data > $column_count) {
391 $column_count = scalar @$data;
392 }
393 }
394
395 return ($min_value, $max_value, $column_count);
396}
397
398sub _draw_legend {
399 my $self = shift;
400 my $style = $self->{'_style'};
401
402 my @labels;
403 my $img = $self->_get_image();
404 if (my $series = $self->_get_data_series()->{'stacked_column'}) {
405 push @labels, map { $_->{'series_name'} } @$series;
406 }
407 if (my $series = $self->_get_data_series()->{'column'}) {
408 push @labels, map { $_->{'series_name'} } @$series;
409 }
410 if (my $series = $self->_get_data_series()->{'line'}) {
411 push @labels, map { $_->{'series_name'} } @$series;
412 }
413
414 if ($style->{features}{legend} && (scalar @labels)) {
415 $self->SUPER::_draw_legend($self->_get_image(), \@labels, $self->_get_image_box())
416 or return;
417 }
418 return;
419}
420
421sub _draw_flat_legend {
422 return 1;
423}
424
425sub _draw_lines {
426 my $self = shift;
427 my $style = $self->{'_style'};
428
429 my $img = $self->_get_image();
430
431 my $max_value = $self->_get_max_value();
432 my $min_value = $self->_get_min_value();
433 my $column_count = $self->_get_column_count();
434
435 my $value_range = $max_value - $min_value;
436
437 my $width = $self->_get_number('width');
438 my $height = $self->_get_number('height');
439 my $size = $self->_get_number('size');
440
441 my $bottom = ($height - $size) / 2;
442 my $left = ($width - $size) / 2;
443
444 my $zero_position = $bottom + $size - (-1*$min_value / $value_range) * ($size -1);
445
446 if ($self->_get_y_tics()) {
447 $self->_draw_y_tics();
448 }
449 if ($self->_get_labels()) {
450 $self->_draw_x_tics();
451 }
452
453 my $line_series = $self->_get_data_series()->{'line'};
454 my $series_counter = $self->_get_series_counter() || 0;
455
456 my $has_columns = (defined $self->_get_data_series()->{'column'} || $self->_get_data_series->{'stacked_column'}) ? 1 : 0;
457
458 my $col_width = int($size / $column_count) -1;
459 my $graph_width = $col_width * $column_count + 1;
460
461 foreach my $series (@$line_series) {
462 my @data = @{$series->{'data'}};
463 my $data_size = scalar @data;
464
465 my $interval;
466 if ($has_columns) {
467 $interval = $graph_width / ($data_size);
468 }
469 else {
470 $interval = $graph_width / ($data_size - 1);
471 }
472 my @fill = $self->_data_fill($series_counter, $self->_get_graph_box());
473 my $color = $self->_data_color($series_counter);
474 for (my $i = 0; $i < $data_size - 1; $i++) {
475 my $x1 = $left + $i * $interval;
476 my $x2 = $left + ($i + 1) * $interval;
477
478 $x1 += $has_columns * $interval / 2;
479 $x2 += $has_columns * $interval / 2;
480
481 my $y1 = $bottom + ($value_range - $data[$i] + $min_value)/$value_range * $size;
482 my $y2 = $bottom + ($value_range - $data[$i + 1] + $min_value)/$value_range * $size;
483
484 $img->line(x1 => $x1, y1 => $y1, x2 => $x2, y2 => $y2, aa => 1, color => $color) || die $img->errstr;
485 $img->circle(x => $x1, y => $y1, r => 3, aa => 1, filled => 1, @fill);
486 }
487
488 my $x2 = $left + ($data_size - 1) * $interval;
489 $x2 += $has_columns * $interval / 2;
490
491 my $y2 = $bottom + ($value_range - $data[$data_size - 1] + $min_value)/$value_range * $size;
492
493 $img->circle(x => $x2, y => $y2, r => 3, aa => 1, filled => 1, @fill);
494 $series_counter++;
495 }
496
497 $self->_set_series_counter($series_counter);
498 return;
499}
500
501sub _draw_columns {
502 my $self = shift;
503 my $style = $self->{'_style'};
504
505 my $img = $self->_get_image();
506
507 my $max_value = $self->_get_max_value();
508 my $min_value = $self->_get_min_value();
509 my $column_count = $self->_get_column_count();
510
511 my $value_range = $max_value - $min_value;
512
513 my $width = $self->_get_number('width');
514 my $height = $self->_get_number('height');
515 my $size = $self->_get_number('size');
516
517 my $bottom = ($height - $size) / 2;
518 my $left = ($width - $size) / 2 + 1;
519
520 my $zero_position = int($bottom + $size - (-1*$min_value / $value_range) * ($size -1));
521
522 if ($self->_get_y_tics()) {
523 $self->_draw_y_tics();
524 }
525 if ($self->_get_labels()) {
526 $self->_draw_x_tics();
527 }
528
529 my $bar_width = int(($size)/ $column_count - 2);
530
531 my $outline_color;
532 if ($style->{'features'}{'outline'}) {
533 $outline_color = $self->_get_color('outline.line');
534 }
535
536 my $series_counter = $self->_get_series_counter() || 0;
537 my $col_series = $self->_get_data_series()->{'column'};
538
539 # This tracks the series we're in relative to the starting series - this way colors stay accurate, but the columns don't start out too far to the right.
540 my $column_series = 0;
541
542 # If there are stacked columns, non-stacked columns need to start one to the right of where they would otherwise
543 my $has_stacked_columns = (defined $self->_get_data_series()->{'stacked_column'} ? 1 : 0);
544
545 for (my $series_pos = 0; $series_pos < scalar @$col_series; $series_pos++) {
546 my $series = $col_series->[$series_pos];
547 my @data = @{$series->{'data'}};
548 my $data_size = scalar @data;
549 my $color = $self->_data_color($series_counter);
550 for (my $i = 0; $i < $data_size; $i++) {
551 my $x1 = int($left + $bar_width * (scalar @$col_series * $i + $series_pos)) + scalar @$col_series * $i + $series_pos;
552 if ($has_stacked_columns) {
553 $x1 += ($i + 1) * $bar_width + $i + 1;
554 }
555 my $x2 = $x1 + $bar_width;
556
557 my $y1 = int($bottom + ($value_range - $data[$i] + $min_value)/$value_range * $size);
558
559 my $color = $self->_data_color($series_counter);
560
561 # my @fill = $self->_data_fill($series_counter, [$x1, $y1, $x2, $zero_position]);
562 if ($data[$i] > 0) {
563 $img->box(xmin => $x1, xmax => $x2, ymin => $y1, ymax => $zero_position-1, color => $color, filled => 1);
564 if ($style->{'features'}{'outline'}) {
565 $img->box(xmin => $x1, xmax => $x2, ymin => $y1, ymax => $zero_position, color => $outline_color);
566 }
567 }
568 else {
569 $img->box(xmin => $x1, xmax => $x2, ymin => $zero_position+1, ymax => $y1, color => $color, filled => 1);
570 if ($style->{'features'}{'outline'}) {
571 $img->box(xmin => $x1, xmax => $x2, ymin => $zero_position+1, ymax => $y1+1, color => $outline_color);
572 }
573 }
574 }
575
576 $series_counter++;
577 $column_series++;
578 }
579 $self->_set_series_counter($series_counter);
580 return;
581}
582
583sub _draw_stacked_columns {
584 my $self = shift;
585 my $style = $self->{'_style'};
586
587 my $img = $self->_get_image();
588
589 my $max_value = $self->_get_max_value();
590 my $min_value = $self->_get_min_value();
591 my $column_count = $self->_get_column_count();
592 my $value_range = $max_value - $min_value;
593
594 my $graph_box = $self->_get_graph_box();
595 my $left = $graph_box->[0] + 1;
596 my $bottom = $graph_box->[1];
597 my $size = $self->_get_number('size');
598
599 if ($self->_get_y_tics()) {
600 $self->_draw_y_tics();
601 }
602 if ($self->_get_labels()) {
603 $self->_draw_x_tics();
604 }
605
606 my $bar_width = int($size / $column_count -2);
607 my $column_series = 0;
608 if (my $column_series_data = $self->_get_data_series()->{'column'}) {
609 $column_series = (scalar @$column_series_data);
610 }
611 $column_series++;
612
613 my $outline_color;
614 if ($style->{'features'}{'outline'}) {
615 $outline_color = $self->_get_color('outline.line');
616 }
617
618 my $zero_position = $bottom + $size - (-1*$min_value / $value_range) * ($size -1);
619 my $col_series = $self->_get_data_series()->{'stacked_column'};
620 my $series_counter = $self->_get_series_counter() || 0;
621 foreach my $series (@$col_series) {
622 my @data = @{$series->{'data'}};
623 my $data_size = scalar @data;
624 my $color = $self->_data_color($series_counter);
625 for (my $i = 0; $i < $data_size; $i++) {
626 my $x1 = int($left + $bar_width * ($column_series * $i)) + $column_series * $i;
627# my $x1 = $left + $i * $size / ($data_size);
628 my $x2 = $x1 + $bar_width;
629
630 my $y1 = $bottom + ($value_range - $data[$i] + $min_value)/$value_range * $size;
631
632 if ($data[$i] > 0) {
633 $img->box(xmin => $x1, xmax => $x2, ymin => $y1, ymax => $zero_position-1, color => $color, filled => 1);
634 if ($style->{'features'}{'outline'}) {
635 $img->box(xmin => $x1, xmax => $x2, ymin => $y1, ymax => $zero_position, color => $outline_color);
636 }
637 }
638 else {
639 $img->box(xmin => $x1, xmax => $x2, ymin => $zero_position+1, ymax => $y1, color => $color, filled => 1);
640 if ($style->{'features'}{'outline'}) {
641 $img->box(xmin => $x1, xmax => $x2, ymin => $zero_position+1, ymax => $y1+1, color => $outline_color);
642 }
643 }
644 }
645
646 $series_counter++;
647 }
648 $self->_set_series_counter($series_counter);
649 return;
650}
651
652sub _add_data_series {
653 my $self = shift;
654 my $series_type = shift;
655 my $data_ref = shift;
656 my $series_name = shift;
657
658 my $graph_data = $self->{'graph_data'} || {};
659
660 my $series = $graph_data->{$series_type} || [];
661
662 push @$series, { data => $data_ref, series_name => $series_name };
663
664 $graph_data->{$series_type} = $series;
665
666 $self->{'graph_data'} = $graph_data;
667 return;
668}
669
670=over
671
672=item set_y_tics($count)
673
674Set the number of Y tics to use. Their value and position will be determined by the data range.
675
676=cut
677
678sub set_y_tics {
679 $_[0]->{'y_tics'} = $_[1];
680}
681
682sub _get_y_tics {
683 return $_[0]->{'y_tics'};
684}
685
686sub _draw_y_tics {
687 my $self = shift;
688 my $min = $self->_get_min_value();
689 my $max = $self->_get_max_value();
690 my $tic_count = $self->_get_y_tics();
691
692 my $img = $self->_get_image();
693 my $graph_box = $self->_get_graph_box();
694 my $image_box = $self->_get_image_box();
695
696 my $interval = ($max - $min) / ($tic_count - 1);
697
698 my %text_info = $self->_text_style('legend')
699 or return;
700
701 my $tic_distance = ($graph_box->[3] - $graph_box->[1]) / ($tic_count - 1);
702 for my $count (0 .. $tic_count - 1) {
703 my $x1 = $graph_box->[0] - 5;
704 my $x2 = $graph_box->[0] + 5;
23a3585a 705 my $y1 = $graph_box->[3] - ($count * $tic_distance) + 1;
2eac77fc 706
707 my $value = sprintf("%.2f", ($count*$interval)+$min);
23a3585a 708
2eac77fc 709 my @box = $self->_text_bbox($value, 'legend')
710 or return;
711
712 $img->line(x1 => $x1, x2 => $x2, y1 => $y1, y2 => $y1, aa => 1, color => '000000');
713
714 my $width = $box[2];
715 my $height = $box[3];
716
717 $img->string(%text_info,
718 x => ($x1 - $width - 3),
719 y => ($y1 + ($height / 2)),
720 text => $value
721 );
722 }
723
724}
725
726sub _draw_x_tics {
727 my $self = shift;
728
729 my $img = $self->_get_image();
730 my $graph_box = $self->_get_graph_box();
731 my $image_box = $self->_get_image_box();
732
733 my $labels = $self->_get_labels();
734
735 my $tic_count = (scalar @$labels) - 1;
736
737 my $has_columns = (defined $self->_get_data_series()->{'column'} || defined $self->_get_data_series()->{'stacked_column'});
738
739 # If we have columns, we want the x-ticks to show up in the middle of the column, not on the left edge
740 my $denominator = $tic_count;
741 if ($has_columns) {
742 $denominator ++;
743 }
744 my $tic_distance = ($graph_box->[2] - $graph_box->[0]) / ($denominator);
745 my %text_info = $self->_text_style('legend')
746 or return;
747
748 for my $count (0 .. $tic_count) {
749 my $label = $labels->[$count];
750 my $x1 = $graph_box->[0] + ($tic_distance * $count);
751
752 if ($has_columns) {
753 $x1 += $tic_distance / 2;
754 }
755 my $y1 = $graph_box->[3] + 5;
756 my $y2 = $graph_box->[3] - 5;
757
758 $img->line(x1 => $x1, x2 => $x1, y1 => $y1, y2 => $y2, aa => 1, color => '000000');
759
760 my @box = $self->_text_bbox($label, 'legend')
761 or return;
762
763 my $width = $box[2];
764 my $height = $box[3];
765
766 $img->string(%text_info,
767 x => ($x1 - ($width / 2)),
768 y => ($y1 + ($height + 5)),
769 text => $label
770 );
771
772 }
773}
774
775sub _valid_input {
776 my $self = shift;
777
778 if (!defined $self->_get_data_series() || !keys %{$self->_get_data_series()}) {
779 return $self->_error("No data supplied");
780 }
781
782 my $data = $self->_get_data_series();
783 if (defined $data->{'line'} && !scalar @{$data->{'line'}->[0]->{'data'}}) {
784 return $self->_error("No values in data series");
785 }
786 if (defined $data->{'column'} && !scalar @{$data->{'column'}->[0]->{'data'}}) {
787 return $self->_error("No values in data series");
788 }
789 if (defined $data->{'stacked_column'} && !scalar @{$data->{'stacked_column'}->[0]->{'data'}}) {
790 return $self->_error("No values in data series");
791 }
792
793 return 1;
794}
795
796sub _set_column_count { $_[0]->{'column_count'} = $_[1]; }
797sub _set_min_value { $_[0]->{'min_value'} = $_[1]; }
798sub _set_max_value { $_[0]->{'max_value'} = $_[1]; }
799sub _set_image_box { $_[0]->{'image_box'} = $_[1]; }
800sub _set_graph_box { $_[0]->{'graph_box'} = $_[1]; }
801sub _set_series_counter { $_[0]->{'series_counter'} = $_[1]; }
802sub _get_column_count { return $_[0]->{'column_count'} }
803sub _get_min_value { return $_[0]->{'min_value'} }
804sub _get_max_value { return $_[0]->{'max_value'} }
805sub _get_image_box { return $_[0]->{'image_box'} }
806sub _get_graph_box { return $_[0]->{'graph_box'} }
807sub _get_series_counter { return $_[0]->{'series_counter'} }
808
2eac77fc 8091;