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<?php |
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namespace common\components; |
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use yii; |
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use Amenadiel\JpGraph\Graph as JpGraph; |
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use Amenadiel\JpGraph\Plot\Plot; |
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use Amenadiel\JpGraph\Plot\AccBarPlot; |
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use Amenadiel\JpGraph\Plot\GroupBarPlot; |
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use Amenadiel\JpGraph\Plot\BarPlot; |
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/** |
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* Graph is a collection of functions related to the behaviors chart that is used |
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* in the email report and when a user makes their check-in behaviors public |
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*/ |
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class Graph extends \yii\base\BaseObject { |
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private $user; |
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public function __construct(\common\interfaces\UserInterface $user, $config = []) { |
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$this->user = $user; |
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parent::__construct($config); |
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} |
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/** |
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* Returns the filepath location of the generated graph image |
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* |
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* @return string the graph image filepath |
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*/ |
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public function getFilepath() { |
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$path = Yii::getAlias('@graphImgPath'); |
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$filename = $this->user->getIdHash() . ".png"; |
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return $path. '/' . $filename; |
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} |
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/** |
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* Returns the URL of the generated graph image |
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* |
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* @return string the graph image URL |
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*/ |
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public function getUrl() { |
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$filename = $this->user->getIdHash() . ".png"; |
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return \yii\helpers\Url::to("@graphImgUrl/$filename", true); |
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} |
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/** |
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* Deletes the graph image |
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*/ |
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public function destroy() { |
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$filepath = $this->getFilepath(); |
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@unlink($filepath); |
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} |
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/** |
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* Creates the graph image |
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* |
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* Generates the graph image according to the values passed in by $values. It |
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* always returns the in-memory image, saving the image to disk is optionally |
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* specified with the $toDisk boolean. |
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* |
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* @param array $values an associative array of dates => check-in summary |
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* @param bool $toDisk used to specify whether or not to save the generated image to disk at the filepath returned by getFilepath(). Defaults to false. |
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* @return string the encoded image |
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*/ |
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public function create(array $checkins, bool $toDisk = false) { |
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if($toDisk) { |
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// wipe out the current image, if it exists |
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$this->destroy(); |
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} |
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// Create the graph |
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$graph = new JpGraph\Graph(800, 600, 'auto'); |
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$graph->title->Set("Last 30 Days of Selected Behaviors"); |
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$graph->title->SetFont(FF_ARIAL, FS_BOLD, 20); |
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$graph->SetImgFormat('png'); |
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$graph->img->SetImgFormat('png'); |
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$graph->SetScale("textlin"); |
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$graph->img->SetMargin(60, 60, 40, 140); |
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$graph->img->SetAntiAliasing(); |
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$graph->SetShadow(); |
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$graph->ygrid->SetFill(false); |
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// Setup dates as labels on the X-axis |
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$graph->xaxis->SetTickLabels(array_keys($checkins)); |
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$graph->xaxis->HideTicks(false,false); |
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$graph->yaxis->scale->SetAutoMin(0); |
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$graph->yaxis->HideLine(false); |
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$graph->yaxis->HideTicks(false,false); |
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$graph->xaxis->SetLabelAngle(45); |
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$graph->xaxis->SetFont(FF_ARIAL, FS_NORMAL, 10); |
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$graph->yaxis->SetFont(FF_ARIAL, FS_NORMAL, 15); |
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// format the data into something nicer |
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$accum = []; |
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foreach($checkins as $checkin_sum) { |
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for($i = 1; $i <= 7; $i ++) { |
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$accum[$i][] = array_key_exists($i, $checkin_sum) ? $checkin_sum[$i]['count'] : 0; |
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} |
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} |
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// Create the bar plots |
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$plots = []; |
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$category = Yii::$container->get(\common\interfaces\CategoryInterface::class); |
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foreach($accum as $category_key => $category_data) { |
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$bplot = new BarPlot($category_data); |
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$color = $category::$colors[$category_key]['color']; |
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$bplot->SetColor($color); |
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$bplot->SetFillColor($color); |
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$bplot->SetLegend(($category::getCategories())[$category_key]); |
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$plots[] = $bplot; |
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} |
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$gbbplot = new AccBarPlot($plots); |
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$graph->Add($gbbplot); |
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$graph->legend->SetColumns(3); |
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$graph->legend->SetPos(0.5,0.98,'center','bottom'); // position it at the center, just above the bottom edge |
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$img = $graph->Stroke(_IMG_HANDLER); |
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ob_start(); |
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imagepng($img); |
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$img_data = ob_get_clean(); |
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if($toDisk) { |
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$filepath = $this->getFilepath(); |
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if(!is_dir(dirname($filepath))) { |
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mkdir(dirname($filepath), 0766, true); |
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} |
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file_put_contents($filepath, $img_data, LOCK_EX); |
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} |
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return $img_data; |
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} |
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} |
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CorWatts /
fasterscale
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