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| <?php | ||
| /** | ||
| * Copyright (C) 2019 Graham Breach | ||
| * | ||
| * This program is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU Lesser General Public License as published by | ||
| * the Free Software Foundation, either version 3 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 Lesser General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Lesser General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
| /** | ||
| * For more information, please contact <[email protected]> | ||
| */ | ||
|
|
||
| namespace Goat1000\SVGGraph; | ||
|
|
||
| class ArrayGraph extends Graph { | ||
|
|
||
| use MultiGraphTrait { | ||
| values as mgValues; | ||
| } | ||
|
|
||
| protected $inner_options; | ||
| protected $inner_types; | ||
| protected $raw_data; | ||
| protected $raw_settings; | ||
|
|
||
| public function __construct($w, $h, array $settings, array $fixed_settings = []) | ||
| { | ||
| $this->raw_settings = $settings; | ||
| parent::__construct($w, $h, $settings, $fixed_settings); | ||
| } | ||
|
|
||
| /** | ||
| * Stores raw values to make it easier to set up subgraphs | ||
| */ | ||
| public function values($values) | ||
| { | ||
| $this->raw_data = $values; | ||
| return $this->mgValues($values); | ||
| } | ||
|
|
||
| /** | ||
| * Now create the subgraphs | ||
| */ | ||
| public function checkValues() | ||
| { | ||
| parent::checkValues(); | ||
| $opt = [ | ||
| 'keep_colour_order' => true, | ||
| 'back_stroke_width' => 0, | ||
| 'back_colour' => 'none', | ||
| 'title' => null, | ||
| ]; | ||
| $opt = array_merge($this->raw_settings, $opt); | ||
|
|
||
| $graphs = $this->getLayout(); | ||
| foreach($graphs as $graph) { | ||
| $s = new Subgraph($graph['type'], $graph['x'], $graph['y'], | ||
| $graph['w'], $graph['h'], array_merge($opt, $graph['options'])); | ||
| $s->values($this->raw_data); | ||
| $s->setColours($this->colours); | ||
| $this->subgraphs[] = $s; | ||
| } | ||
| } | ||
|
|
||
| public function draw() | ||
| { | ||
| // all drawing is done by subgraphs | ||
| return $this->underShapes() . $this->overShapes(); | ||
| } | ||
|
|
||
| /** | ||
| * Returns the list of graphs to be drawn and where to draw them | ||
| */ | ||
| private function getLayout() | ||
| { | ||
| // find which datasets are going in each graph | ||
| $enabled_datasets = $this->multi_graph->getEnabledDatasets(); | ||
| $graph_datasets = $this->getOption('array_graph_dataset'); | ||
| if($graph_datasets === null) { | ||
|
|
||
| // default is one dataset per graph | ||
| $graph_datasets = []; | ||
| foreach($enabled_datasets as $d) { | ||
| $graph_datasets[] = [$d]; | ||
| } | ||
| } else { | ||
|
|
||
| // need to check each of the selected datasets is enabled | ||
| $new_outer = []; | ||
| foreach($graph_datasets as $gd) { | ||
| $new_inner = []; | ||
| if(is_array($gd)) { | ||
| foreach($gd as $d) { | ||
| if(!in_array($d, $enabled_datasets)) | ||
| continue; | ||
| $new_inner[] = $d; | ||
| } | ||
| } else { | ||
| if(!in_array($gd, $enabled_datasets)) | ||
| continue; | ||
| $new_inner[] = $gd; | ||
| } | ||
|
|
||
| if(count($new_inner) > 0) | ||
| $new_outer[] = $new_inner; | ||
| } | ||
| $graph_datasets = $new_outer; | ||
| } | ||
|
|
||
| $graph_count = count($graph_datasets); | ||
| $cols = $this->getOption('array_graph_columns'); | ||
| if($cols === null || $cols === 'auto') { | ||
| $cols = $this->calcCols($graph_count); | ||
| } else { | ||
| $cols = (int)$cols; | ||
| if($cols < 1) | ||
| throw new \Exception('Invalid array_graph_columns value: ' . $cols); | ||
| if($this->width / $cols < 20) | ||
| throw new \Exception('Option array_graph_columns too large: ' . $cols); | ||
| } | ||
| $rows = ceil($graph_count / $cols); | ||
| $w = $this->width / $cols; | ||
| $h = $this->height / $rows; | ||
|
|
||
| $inner_options = $this->getOption('array_graph_options'); | ||
| if($inner_options !== null) { | ||
| if(!is_array($inner_options)) | ||
| throw new \Exception('Option array_graph_options is not an array'); | ||
|
|
||
| // check if it is an array of arrays | ||
| if(!isset($inner_options[0]) || !is_array($inner_options[0])) { | ||
|
|
||
| // put single array into outer array | ||
| $inner_options = [ $inner_options ]; | ||
| } | ||
| } else { | ||
|
|
||
| // no special options | ||
| $inner_options = [ [ ] ]; | ||
| } | ||
| $o_count = count($inner_options); | ||
|
|
||
| $index = 0; | ||
| $layout = []; | ||
| $last_row_count = $graph_count % $cols; | ||
| $last_row_offset = 0; | ||
| $align = $this->getOption('array_graph_align'); | ||
| if($last_row_count && $align != 'left') { | ||
| $mult = $align == 'right' ? 1.0 : 0.5; | ||
| $last_row_offset = ($this->width - $last_row_count * $w) * $mult; | ||
| } | ||
|
|
||
| foreach($graph_datasets as $d) { | ||
| $col = $index % $cols; | ||
| $row = floor($index / $cols); | ||
| $x_offset = ($row == $rows - 1 ? $x_offset = $last_row_offset : 0); | ||
|
|
||
| $options = $inner_options[$index % $o_count]; | ||
| $options['dataset'] = $d; | ||
|
|
||
| $g = [ | ||
| 'x' => $x_offset + $w * $col, | ||
| 'y' => $h * $row, | ||
| 'w' => $w, | ||
| 'h' => $h, | ||
| 'type' => $this->getOption(['array_graph_type', $index], ['@', 'PieGraph']), | ||
| 'options' => $options, | ||
| ]; | ||
|
|
||
| $layout[] = $g; | ||
| ++$index; | ||
| } | ||
|
|
||
| return $layout; | ||
| } | ||
|
|
||
| /** | ||
| * Calculates the best number of columns | ||
| */ | ||
| private function calcCols($count) | ||
| { | ||
| if($count === 1) | ||
| return 1; | ||
|
|
||
| $w = $this->width; | ||
| $h = $this->height; | ||
| if($count === 2) | ||
| return $w > $h ? 2 : 1; | ||
|
|
||
| $matches = []; | ||
| for($c = 1; $c <= $count; ++$c) { | ||
| $r = ceil($count / $c); | ||
| $bw = $w / $c; | ||
| $bh = $h / $r; | ||
| $area = $bw * $bh; | ||
| $aspect = $bw < $bh ? $bw / $h : $bh / $bw; | ||
| $score = $area * ($aspect + 1); | ||
|
|
||
| $matches[] = [ | ||
| 'c' => $c, | ||
| 'r' => $r, | ||
| 'area' => $area, | ||
| 'aspect' => $aspect, | ||
| 'score' => $score, | ||
| ]; | ||
| } | ||
|
|
||
| usort($matches, function($a, $b) { return $a['score'] - $b['score']; }); | ||
| $winner = array_pop($matches); | ||
| return $winner['c']; | ||
| } | ||
|
|
||
| } | ||
|
|
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