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<?php declare(strict_types=1); |
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namespace Compolomus\Compomage; |
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use Compolomus\Compomage\Interfaces\ImageInterface; |
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class GD extends AbstractImage implements ImageInterface |
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{ |
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/** |
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* GD constructor. |
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* @param string $image |
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* @throws \Exception |
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*/ |
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public function __construct(string $image) |
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{ |
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$this->init($image); |
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} |
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/** |
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* @return resource |
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*/ |
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public function getImage() |
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{ |
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return $this->image; |
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} |
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/** |
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* @param string $source |
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* @return ImageInterface |
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* @throws \Exception |
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*/ |
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protected function tmp(string $source): ImageInterface |
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{ |
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$image = imagecreatefromstring($source); |
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if (!\is_resource($image)) { |
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throw new \InvalidArgumentException('Image create failed'); |
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} |
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$this->setImage($image); |
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$this->setSizes(); |
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// save transparent |
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imagesavealpha($this->getImage(), true); |
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imagealphablending($this->getImage(), false); |
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return $this; |
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} |
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public function flip(): ImageInterface |
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{ |
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imageflip($this->getImage(), IMG_FLIP_VERTICAL); |
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return $this; |
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} |
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public function flop(): ImageInterface |
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{ |
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imageflip($this->getImage(), IMG_FLIP_HORIZONTAL); |
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return $this; |
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} |
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public function grayscale(): ImageInterface |
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{ |
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imagefilter($this->getImage(), IMG_FILTER_GRAYSCALE); |
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return $this; |
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} |
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/** |
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* @param string $text |
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* @param string $font |
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* @param string $position |
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* @return $this |
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* @throws \Exception |
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*/ |
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public function copyright(string $text, string $font, string $position = 'SouthWest'): ImageInterface |
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{ |
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if (!array_key_exists(strtoupper($position), self::POSITIONS)) { |
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throw new \InvalidArgumentException('Wrong position'); |
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} |
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imagecopymerge( |
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$this->getImage(), |
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$image = $this->prepareImage($text, $font), |
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(int) ((($this->getWidth() - imagesx($image)) / 2) * self::POSITIONS[strtoupper($position)]['x']) + self::POSITIONS[strtoupper($position)]['padX'], |
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(int) ((($this->getHeight() - imagesy($image)) / 2) * self::POSITIONS[strtoupper($position)]['y']) + self::POSITIONS[strtoupper($position)]['padY'], |
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0, |
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0, |
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$this->getWidth(), |
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$this->getHeight(), |
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80 |
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); |
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return $this; |
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} |
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/** |
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* @param string $text |
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* @param string $font |
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* @return resource |
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* @throws \Exception |
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*/ |
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private function prepareImage(string $text, string $font) |
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{ |
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if (!$coordinates = imagettfbbox($fontSize = 15, 0, $font, $text)) { |
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throw new \InvalidArgumentException('Does not support font'); |
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} |
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$minX = min([$coordinates[0], $coordinates[2], $coordinates[4], $coordinates[6]]); |
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$maxX = max([$coordinates[0], $coordinates[2], $coordinates[4], $coordinates[6]]); |
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$minY = min([$coordinates[1], $coordinates[3], $coordinates[5], $coordinates[7]]); |
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$maxY = max([$coordinates[1], $coordinates[3], $coordinates[5], $coordinates[7]]); |
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$textX = (int) abs($minX) + 1; |
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$textY = (int) abs($minY) + 1; |
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$image = $this->newImage($maxX - $minX + 2, $maxY - $minY + 2); |
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imagecolortransparent($image, $white = imagecolorallocate($image, 0, 0, 0)); |
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imagefilledrectangle($image, 0, 0, $this->getWidth(), 20, $white); |
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imagettftext($image, $fontSize, 0, $textX, $textY, $white, $font, $text); |
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imagettftext($image, $fontSize, 0, $textX + 1, $textY + 1, $blue = imagecolorallocate($image, 0, 128, 128), $font, $text); |
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imagettftext($image, $fontSize, 0, $textX + 1, $textY + 1, $red = imagecolorallocate($image, 255, 0, 0), $font, $text); |
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imagettftext($image, $fontSize, 0, $textX + 2, $textY + 2, $black = imagecolorallocate($image, 255, 255, 255), $font, $text); |
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imagettftext($image, $fontSize, 0, $textX + 2, $textY + 2, $gray = imagecolorallocate($image, 128, 128, 128), $font, $text); |
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return $image; |
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} |
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protected function setSizes(): void |
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{ |
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$this->setWidth(imagesx($this->getImage())); |
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$this->setHeight(imagesy($this->getImage())); |
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} |
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private function newImage(int $width, int $height) |
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{ |
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$newimg = imagecreatetruecolor($width, $height); |
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$transparent = imagecolorallocatealpha($newimg, 255, 255, 255, 127); |
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imagefill($newimg, 0, 0, $transparent); |
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imagealphablending($newimg, true); |
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imagesavealpha($newimg, true); |
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return $newimg; |
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} |
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public function resize(int $width, int $height): ImageInterface |
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{ |
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$newimage = $this->newImage($width, $height); |
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imagecopyresampled($newimage, $this->getImage(), 0, 0, 0, 0, $width, $height, $this->getWidth() , $this->getHeight()); |
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$this->setImage($newimage); |
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$this->setSizes(); |
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return $this; |
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} |
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public function crop(int $width, int $height, int $x, int $y): ImageInterface |
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{ |
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$width -= $x; |
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$height -= $y; |
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$newimage = $this->newImage($width, $height); |
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imagecopyresampled($newimage, $this->getImage(), 0, 0, $x, $y, $width, $height, $width, $height); |
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$this->setImage($newimage); |
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$this->setSizes(); |
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return $this; |
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} |
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/** |
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* @param Image $watermark |
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* @param int $x |
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* @param int $y |
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* @return ImageInterface |
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*/ |
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protected function prepareWatermark(Image $watermark, int $x, int $y): ImageInterface |
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{ |
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imagealphablending($this->getImage(), true); |
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imagesavealpha($this->getImage(), true); |
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imagecopyresampled( |
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$this->getImage(), |
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$watermark->getImage(), |
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$x, |
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$y, |
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0, |
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0, |
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$width = $watermark->getWidth(), |
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$height = $watermark->getHeight(), |
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$width, |
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$height |
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); |
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return $this; |
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} |
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public function rotate(int $angle = 90): ImageInterface |
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{ |
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$transparent = imagecolorallocatealpha($this->image, 0, 0, 0, 127); |
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$rotate = imagerotate($this->getImage(), $angle, $transparent); |
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imagealphablending($rotate, true); |
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imagesavealpha($rotate, true); |
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$this->setImage($rotate); |
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$this->setSizes(); |
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return $this; |
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} |
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public function __toString(): string |
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{ |
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ob_start(); |
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imagepng($this->getImage(), null, 9, PNG_ALL_FILTERS); |
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$temp = ob_get_contents(); |
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ob_clean(); |
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return trim($temp); |
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} |
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public function save(string $filename): bool |
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{ |
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return true; |
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} |
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} |
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Compolomus /
Compomage
