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143
public/kirby/src/Image/Darkroom/GdLib.php
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143
public/kirby/src/Image/Darkroom/GdLib.php
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<?php
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namespace Kirby\Image\Darkroom;
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use claviska\SimpleImage;
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use Kirby\Filesystem\Mime;
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use Kirby\Image\Darkroom;
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use Kirby\Image\Focus;
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/**
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* GdLib
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*
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* @package Kirby Image
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* @author Bastian Allgeier <bastian@getkirby.com>
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* @link https://getkirby.com
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* @copyright Bastian Allgeier
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* @license https://opensource.org/licenses/MIT
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*/
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class GdLib extends Darkroom
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{
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/**
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* Processes the image with the SimpleImage library
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*/
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public function process(string $file, array $options = []): array
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{
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$options = $this->preprocess($file, $options);
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$mime = $this->mime($options);
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$image = new SimpleImage();
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$image->fromFile($file);
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$image = $this->resize($image, $options);
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$image = $this->autoOrient($image, $options);
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$image = $this->blur($image, $options);
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$image = $this->grayscale($image, $options);
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$image = $this->sharpen($image, $options);
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$image->toFile($file, $mime, $options);
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return $options;
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}
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/**
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* Activates the autoOrient option in SimpleImage
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* unless this is deactivated
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*/
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protected function autoOrient(SimpleImage $image, array $options): SimpleImage
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{
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if ($options['autoOrient'] === false) {
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return $image;
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}
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return $image->autoOrient();
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}
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/**
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* Wrapper around SimpleImage's resize and crop methods
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*/
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protected function resize(SimpleImage $image, array $options): SimpleImage
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{
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// just resize, no crop
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if ($options['crop'] === false) {
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return $image->resize($options['width'], $options['height']);
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}
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// crop based on focus point
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if (Focus::isFocalPoint($options['crop']) === true) {
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// get crop coords for focal point:
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// if image needs to be cropped, crop before resizing
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if ($focus = Focus::coords(
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$options['crop'],
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$options['sourceWidth'],
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$options['sourceHeight'],
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$options['width'],
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$options['height']
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)) {
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$image->crop(
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$focus['x1'],
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$focus['y1'],
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$focus['x2'],
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$focus['y2']
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);
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}
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return $image->thumbnail($options['width'], $options['height']);
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}
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// normal crop with crop anchor
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return $image->thumbnail(
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$options['width'],
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$options['height'] ?? $options['width'],
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$options['crop']
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);
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}
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/**
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* Applies the correct blur settings for SimpleImage
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*/
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protected function blur(SimpleImage $image, array $options): SimpleImage
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{
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if ($options['blur'] === false) {
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return $image;
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}
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return $image->blur('gaussian', (int)$options['blur']);
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}
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/**
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* Applies grayscale conversion if activated in the options.
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*/
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protected function grayscale(SimpleImage $image, array $options): SimpleImage
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{
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if ($options['grayscale'] === false) {
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return $image;
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}
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return $image->desaturate();
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}
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/**
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* Applies sharpening if activated in the options.
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*/
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protected function sharpen(SimpleImage $image, array $options): SimpleImage
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{
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if (is_int($options['sharpen']) === false) {
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return $image;
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}
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return $image->sharpen($options['sharpen']);
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}
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/**
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* Returns mime type based on `format` option
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*/
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protected function mime(array $options): string|null
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{
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if ($options['format'] === null) {
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return null;
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}
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return Mime::fromExtension($options['format']);
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}
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}
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246
public/kirby/src/Image/Darkroom/ImageMagick.php
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246
public/kirby/src/Image/Darkroom/ImageMagick.php
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<?php
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namespace Kirby\Image\Darkroom;
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use Exception;
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use Kirby\Filesystem\F;
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use Kirby\Image\Darkroom;
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use Kirby\Image\Focus;
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/**
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* ImageMagick
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*
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* @package Kirby Image
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* @author Bastian Allgeier <bastian@getkirby.com>
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* @link https://getkirby.com
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* @copyright Bastian Allgeier
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* @license https://opensource.org/licenses/MIT
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*/
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class ImageMagick extends Darkroom
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{
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/**
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* Activates imagemagick's auto-orient feature unless
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* it is deactivated via the options
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*/
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protected function autoOrient(string $file, array $options): string|null
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{
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if ($options['autoOrient'] === true) {
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return '-auto-orient';
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}
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return null;
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}
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/**
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* Applies the blur settings
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*/
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protected function blur(string $file, array $options): string|null
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{
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if ($options['blur'] !== false) {
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return '-blur ' . escapeshellarg('0x' . $options['blur']);
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}
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return null;
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}
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/**
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* Keep animated gifs
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*/
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protected function coalesce(string $file, array $options): string|null
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{
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if (F::extension($file) === 'gif') {
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return '-coalesce';
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}
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return null;
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}
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/**
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* Creates the convert command with the right path to the binary file
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*/
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protected function convert(string $file, array $options): string
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{
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$command = escapeshellarg($options['bin']);
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// default is limiting to single-threading to keep CPU usage sane
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$command .= ' -limit thread ' . escapeshellarg($options['threads']);
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// append input file
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return $command . ' ' . escapeshellarg($file);
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}
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/**
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* Returns additional default parameters for imagemagick
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*/
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protected function defaults(): array
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{
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return parent::defaults() + [
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'bin' => 'convert',
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'interlace' => false,
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'threads' => 1,
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];
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}
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/**
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* Applies the correct settings for grayscale images
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*/
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protected function grayscale(string $file, array $options): string|null
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{
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if ($options['grayscale'] === true) {
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return '-colorspace gray';
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}
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return null;
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}
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/**
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* Applies sharpening if activated in the options.
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*/
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protected function sharpen(string $file, array $options): string|null
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{
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if (is_int($options['sharpen']) === false) {
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return null;
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}
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$amount = max(1, min(100, $options['sharpen'])) / 100;
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return '-sharpen ' . escapeshellarg('0x' . $amount);
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}
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/**
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* Applies the correct settings for interlaced JPEGs if
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* activated via options
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*/
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protected function interlace(string $file, array $options): string|null
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{
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if ($options['interlace'] === true) {
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return '-interlace line';
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}
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return null;
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}
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/**
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* Creates and runs the full imagemagick command
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* to process the image
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*
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* @throws \Exception
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*/
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public function process(string $file, array $options = []): array
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{
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$options = $this->preprocess($file, $options);
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$command = [];
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$command[] = $this->convert($file, $options);
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$command[] = $this->strip($file, $options);
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$command[] = $this->interlace($file, $options);
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$command[] = $this->coalesce($file, $options);
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$command[] = $this->grayscale($file, $options);
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$command[] = $this->autoOrient($file, $options);
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$command[] = $this->resize($file, $options);
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$command[] = $this->quality($file, $options);
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$command[] = $this->blur($file, $options);
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$command[] = $this->sharpen($file, $options);
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$command[] = $this->save($file, $options);
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// remove all null values and join the parts
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$command = implode(' ', array_filter($command));
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// try to execute the command
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exec($command, $output, $return);
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// log broken commands
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if ($return !== 0) {
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throw new Exception('The imagemagick convert command could not be executed: ' . $command);
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}
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return $options;
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}
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/**
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* Applies the correct JPEG compression quality settings
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*/
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protected function quality(string $file, array $options): string
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{
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return '-quality ' . escapeshellarg($options['quality']);
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}
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/**
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* Creates the correct options to crop or resize the image
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* and translates the crop positions for imagemagick
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*/
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protected function resize(string $file, array $options): string
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{
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// simple resize
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if ($options['crop'] === false) {
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return '-thumbnail ' . escapeshellarg(sprintf('%sx%s!', $options['width'], $options['height']));
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}
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// crop based on focus point
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if (Focus::isFocalPoint($options['crop']) === true) {
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if ($focus = Focus::coords(
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$options['crop'],
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$options['sourceWidth'],
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$options['sourceHeight'],
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$options['width'],
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$options['height']
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)) {
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return sprintf(
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'-crop %sx%s+%s+%s -resize %sx%s^',
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$focus['width'],
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$focus['height'],
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$focus['x1'],
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$focus['y1'],
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$options['width'],
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$options['height']
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);
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}
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}
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// translate the gravity option into something imagemagick understands
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$gravity = match ($options['crop'] ?? null) {
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'top left' => 'NorthWest',
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'top' => 'North',
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'top right' => 'NorthEast',
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'left' => 'West',
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'right' => 'East',
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'bottom left' => 'SouthWest',
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'bottom' => 'South',
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'bottom right' => 'SouthEast',
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default => 'Center'
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};
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$command = '-thumbnail ' . escapeshellarg(sprintf('%sx%s^', $options['width'], $options['height']));
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$command .= ' -gravity ' . escapeshellarg($gravity);
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$command .= ' -crop ' . escapeshellarg(sprintf('%sx%s+0+0', $options['width'], $options['height']));
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return $command;
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}
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/**
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* Creates the option for the output file
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*/
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protected function save(string $file, array $options): string
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{
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if ($options['format'] !== null) {
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$file = pathinfo($file, PATHINFO_DIRNAME) . '/' . pathinfo($file, PATHINFO_FILENAME) . '.' . $options['format'];
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}
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return escapeshellarg($file);
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}
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/**
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* Removes all metadata from the image
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*/
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protected function strip(string $file, array $options): string
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{
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if (F::extension($file) === 'png') {
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// ImageMagick does not support keeping ICC profiles while
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// stripping other privacy- and security-related information,
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// such as GPS data; so discard all color profiles for PNG files
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// (tested with ImageMagick 7.0.11-14 Q16 x86_64 2021-05-31)
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return '-strip';
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}
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return '';
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}
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}
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