public function onUpload(Form $form)
{
/** @var UploadControl[] $form */
/** @var FileUpload $json */
/** @var FileUpload $audio */
$json = $form['json']->getValue();
$audio = $form['audio']->getValue();
$data = Json::decode($json->getContents(), Json::FORCE_ARRAY);
$blackboard = new Rme\Blackboard();
$this->orm->contents->attach($blackboard);
$blackboard->title = 'Nová nahrávka';
$blackboard->description = ' ';
$blackboard->hidden = TRUE;
$blackboard->duration = $data['duration'];
$blackboard->preview = 'https://placehold.it/480x320&text=...';
$blackboard->author = $this->userEntity;
$this->orm->flush();
$base = $this->paths->getBlackboards() . "/{$blackboard->id}";
$json->move("{$base}.json");
$audio->move("{$base}.wav");
$producer = $this->queue->getProducer('blackboardPreview');
$producer->publish(serialize(['blackboard' => new EntityPointer($blackboard)]));
$link = $this->link('BlackboardEditor:default', ['blackboardId' => $blackboard->id]);
$this->sendJson(['redirect' => $link]);
}
public function generate(Blackboard $bb, $outfile)
{
$raw = file_get_contents($this->paths->getBlackboards() . "/{$bb->id}.json");
$data = Json::decode($raw, Json::FORCE_ARRAY);
$min = ['width' => PHP_INT_MAX, 'height' => PHP_INT_MAX];
$max = ['width' => 0, 'height' => 0];
foreach ($data['data'] as $row) {
if ($row['type'] !== 'beginStroke' && $row['type'] !== 'strokeTo') {
continue;
}
$min['width'] = min($min['width'], $row['loc']['x']);
$min['height'] = min($min['height'], $row['loc']['y']);
$max['width'] = max($max['width'], $row['loc']['x']);
$max['height'] = max($max['height'], $row['loc']['y']);
}
$margin = 20;
$min['width'] -= $margin;
$min['height'] -= $margin;
$max['width'] += $margin;
$max['height'] += $margin;
$ratio = 2;
$canvas = imagecreatetruecolor(($max['width'] - $min['width']) * $ratio, ($max['height'] - $min['height']) * $ratio);
if (function_exists('imageantialias')) {
// this function is not in php5-gd and requires recompiling php
imageantialias($canvas, TRUE);
}
$last = NULL;
foreach ($data['data'] as $row) {
if ($row['type'] === 'beginStroke') {
$last = $row['loc'];
} else {
if ($row['type'] === 'strokeTo') {
$c = $row['color'];
$color = imagecolorallocate($canvas, $c['r'], $c['g'], $c['b']);
$this->imagelinethick($canvas, ($last['x'] - $min['width']) * $ratio, ($last['y'] - $min['height']) * $ratio, ($row['loc']['x'] - $min['width']) * $ratio, ($row['loc']['y'] - $min['height']) * $ratio, $color, 3);
$last = $row['loc'];
} else {
if ($row['type'] === 'erase') {
$color = imagecolorallocate($canvas, 0, 0, 0);
$radius = 11 * $ratio;
$x = ($row['loc']['x'] - $min['width']) * $ratio;
$y = ($row['loc']['y'] - $min['height']) * $ratio;
imagefilledarc($canvas, $x, $y, $radius, $radius, 0, 360, $color, IMG_ARC_PIE);
}
}
}
}
imagepng($canvas, $outfile, 9);
}
