From: Raphaël Gertz Date: Mon, 3 Oct 2022 00:52:45 +0000 (+0200) Subject: Add facebook util class X-Git-Tag: 0.2.1~15 X-Git-Url: https://git.rapsys.eu/packbundle/commitdiff_plain/df7b4f1cde5b1f7c3534df258047d1581f066134 Add facebook util class --- diff --git a/Util/FacebookUtil.php b/Util/FacebookUtil.php new file mode 100644 index 0000000..ea3393d --- /dev/null +++ b/Util/FacebookUtil.php @@ -0,0 +1,388 @@ + + * + * For the full copyright and license information, please view the LICENSE + * file that was distributed with this source code. + */ + +namespace Rapsys\PackBundle\Util; + +use Symfony\Component\Asset\PackageInterface; +use Symfony\Component\Filesystem\Exception\IOExceptionInterface; +use Symfony\Component\Filesystem\Filesystem; + +/** + * Helps manage facebook images + */ +class FacebookUtil { + /** + * The cache directory + * + * @var string + */ + protected $cache; + + /** + * The fonts array + * + * @var array + */ + protected $fonts; + + /** + * The public path + * + * @var string + */ + protected $path; + + /** + * The public url + * + * @var string + */ + protected $url; + + /** + * The package instance + * + * @var PackageInterface + */ + protected $package; + + /** + * The prefix + * + * @var string + */ + protected $prefix; + + /** + * The source + * + * @var string + */ + protected $source; + + /** + * Creates a new osm util + * + * @param PackageInterface $package The package instance + * @param string $cache The cache directory + * @param string $path The public path + * @param string $url The public url + * @param string $prefix The prefix + */ + function __construct(PackageInterface $package, string $cache, string $path, string $url, string $prefix = 'facebook', string $source = 'png/facebook.png', array $fonts = [ 'default' => 'ttf/default.ttf' ]) { + //Set cache + $this->cache = $cache.'/'.$prefix; + + //Set fonts + $this->fonts = $fonts; + + //Set path + $this->path = $path.'/'.$prefix; + + //Set url + $this->url = $url.'/'.$prefix; + + //Set package instance + $this->package = $package; + + //Set prefix key + $this->prefix = $prefix; + + //Set source + $this->source = $source; + } + + /** + * Return the facebook image + * + * Generate simple image in jpeg format or load it from cache + * + * @param string $pathInfo The request path info + * @param array $texts The image texts + * @param int $updated The updated timestamp + * @param ?string $source The image source + * @param int $width The width + * @param int $height The height + * @return array The image array + */ + public function getImage(string $pathInfo, array $texts, int $updated, ?string $source = null, int $width = 1200, int $height = 630): array { + //Set path file + $path = $this->path.$pathInfo.'.jpeg'; + + //Without existing path + if (!is_dir($dir = dirname($path))) { + //Create filesystem object + $filesystem = new Filesystem(); + + try { + //Create path + //XXX: set as 0775, symfony umask (0022) will reduce rights (0755) + $filesystem->mkdir($dir, 0775); + } catch (IOExceptionInterface $e) { + //Throw error + throw new \Exception(sprintf('Output path "%s" do not exists and unable to create it', $dir), 0, $e); + } + } + + //With path file + if (is_file($path) && ($mtime = stat($path)['mtime']) && $mtime >= $updated) { + #XXX: we used to drop texts with $data['canonical'] === true !!! + + //Return image data + return [ + #'og:image' => $this->package->getAbsoluteUrl('@RapsysAir/facebook/'.$mtime.$pathInfo.'.jpeg'), + 'og:image' => $this->package->getAbsoluteUrl($this->url.'/'.$mtime.$pathInfo.'.jpeg'), + 'og:image:alt' => str_replace("\n", ' ', implode(' - ', array_keys($texts))), + 'og:image:height' => $height, + 'og:image:width' => $width + ]; + } + + //Set cache path + $cache = $this->cache.$pathInfo.'.png'; + + //Without cache path + if (!is_dir($dir = dirname($cache))) { + //Create filesystem object + $filesystem = new Filesystem(); + + try { + //Create path + //XXX: set as 0775, symfony umask (0022) will reduce rights (0755) + $filesystem->mkdir($dir, 0775); + } catch (IOExceptionInterface $e) { + //Throw error + throw new \Exception(sprintf('Output directory "%s" do not exists and unable to create it', $dir), 0, $e); + } + } + + //Without source + if ($source === null) { + //Set source + $source = realpath($this->source); + } + + //Create image object + $image = new \Imagick(); + + //Without cache image + if (!is_file($cache) || stat($cache)['mtime'] < stat($source)['mtime']) { + //Check target directory + if (!is_dir($dir = dirname($cache))) { + //Create filesystem object + $filesystem = new Filesystem(); + + try { + //Create dir + //XXX: set as 0775, symfony umask (0022) will reduce rights (0755) + $filesystem->mkdir($dir, 0775); + } catch (IOExceptionInterface $e) { + //Throw error + throw new \Exception(sprintf('Output directory "%s" do not exists and unable to create it', $dir), 0, $e); + } + } + + //Read image + $image->readImage($source); + + //Crop using aspect ratio + //XXX: for better result upload image directly in aspect ratio :) + $image->cropThumbnailImage($width, $height); + + //Strip image exif data and properties + $image->stripImage(); + + //Save cache image + if (!$image->writeImage($cache)) { + //Throw error + throw new \Exception(sprintf('Unable to write image "%s"', $cache)); + } + //With cache + } else { + //Read image + $image->readImage($cache); + } + + //Create draw + $draw = new \ImagickDraw(); + + //Set stroke antialias + $draw->setStrokeAntialias(true); + + //Set text antialias + $draw->setTextAntialias(true); + + //Set align aliases + $aligns = [ + 'left' => \Imagick::ALIGN_LEFT, + 'center' => \Imagick::ALIGN_CENTER, + 'right' => \Imagick::ALIGN_RIGHT + ]; + + //Set default font + $defaultFont = 'dejavusans'; + + //Set default align + $defaultAlign = 'center'; + + //Set default size + $defaultSize = 60; + + //Set default stroke + $defaultStroke = '#00c3f9'; + + //Set default width + $defaultWidth = 15; + + //Set default fill + $defaultFill = 'white'; + + //Init counter + $i = 1; + + //Set text count + $count = count($texts); + + //Draw each text stroke + foreach($texts as $text => $data) { + //Set font + $draw->setFont($this->fonts[$data['font']??$defaultFont]); + + //Set font size + $draw->setFontSize($data['size']??$defaultSize); + + //Set stroke width + $draw->setStrokeWidth($data['width']??$defaultWidth); + + //Set text alignment + $draw->setTextAlignment($align = ($aligns[$data['align']??$defaultAlign])); + + //Get font metrics + $metrics = $image->queryFontMetrics($draw, $text); + + //Without y + if (empty($data['y'])) { + //Position verticaly each text evenly + $texts[$text]['y'] = $data['y'] = (($height + 100) / (count($texts) + 1) * $i) - 50; + } + + //Without x + if (empty($data['x'])) { + if ($align == \Imagick::ALIGN_CENTER) { + $texts[$text]['x'] = $data['x'] = $width/2; + } elseif ($align == \Imagick::ALIGN_LEFT) { + $texts[$text]['x'] = $data['x'] = 50; + } elseif ($align == \Imagick::ALIGN_RIGHT) { + $texts[$text]['x'] = $data['x'] = $width - 50; + } + } + + //Center verticaly + //XXX: add ascender part then center it back by half of textHeight + //TODO: maybe add a boundingbox ??? + $texts[$text]['y'] = $data['y'] += $metrics['ascender'] - $metrics['textHeight']/2; + + //Set stroke color + $draw->setStrokeColor(new \ImagickPixel($data['stroke']??$defaultStroke)); + + //Set fill color + $draw->setFillColor(new \ImagickPixel($data['stroke']??$defaultStroke)); + + //Add annotation + $draw->annotation($data['x'], $data['y'], $text); + + //Increase counter + $i++; + } + + //Create stroke object + $stroke = new \Imagick(); + + //Add new image + $stroke->newImage($width, $height, new \ImagickPixel('transparent')); + + //Draw on image + $stroke->drawImage($draw); + + //Blur image + //XXX: blur the stroke canvas only + $stroke->blurImage(5,3); + + //Set opacity to 0.5 + //XXX: see https://www.php.net/manual/en/image.evaluateimage.php + $stroke->evaluateImage(\Imagick::EVALUATE_DIVIDE, 1.5, \Imagick::CHANNEL_ALPHA); + + //Compose image + $image->compositeImage($stroke, \Imagick::COMPOSITE_OVER, 0, 0); + + //Clear stroke + $stroke->clear(); + + //Destroy stroke + unset($stroke); + + //Clear draw + $draw->clear(); + + //Set text antialias + $draw->setTextAntialias(true); + + //Draw each text + foreach($texts as $text => $data) { + //Set font + $draw->setFont($this->fonts[$data['font']??$defaultFont]); + + //Set font size + $draw->setFontSize($data['size']??$defaultSize); + + //Set text alignment + $draw->setTextAlignment($aligns[$data['align']??$defaultAlign]); + + //Set fill color + $draw->setFillColor(new \ImagickPixel($data['fill']??$defaultFill)); + + //Add annotation + $draw->annotation($data['x'], $data['y'], $text); + + //With canonical text + if (!empty($data['canonical'])) { + //Prevent canonical to finish in alt + unset($texts[$text]); + } + } + + //Draw on image + $image->drawImage($draw); + + //Strip image exif data and properties + $image->stripImage(); + + //Set image format + $image->setImageFormat('jpeg'); + + //Set progressive jpeg + $image->setInterlaceScheme(\Imagick::INTERLACE_PLANE); + + //Save image + if (!$image->writeImage($path)) { + //Throw error + throw new \Exception(sprintf('Unable to write image "%s"', $path)); + } + + //Return image data + return [ + 'og:image' => $this->package->getAbsoluteUrl($this->url.'/'.stat($path)['mtime'].$pathInfo.'.jpeg'), + 'og:image:alt' => str_replace("\n", ' ', implode(' - ', array_keys($texts))), + 'og:image:height' => $height, + 'og:image:width' => $width + ]; + } +}