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Picture.php
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Picture.php
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<?php
namespace Kinglozzer\SilverstripePicture;
use Exception;
use SilverStripe\Assets\Image;
use SilverStripe\ORM\ArrayList;
use SilverStripe\ORM\FieldType\DBHTMLText;
use SilverStripe\View\ViewableData;
class Picture extends ViewableData
{
/**
* A config array of available styles to be called in templates
*/
private static array $styles = [];
/**
* The underlying Silverstripe image
*/
protected Image $image;
/**
* The requested picture style
*/
protected string $style;
/**
* The config settings for the requested picture style
*/
protected ?array $styleConfig;
public function __construct(Image $image, string $style)
{
parent::__construct();
$this->image = $image;
$this->style = $style;
$styles = array_change_key_case($this->config()->get('styles'), CASE_LOWER);
$this->styleConfig = $styles[$this->style];
}
public function forTemplate(): DBHTMLText
{
return $this->renderWith(__CLASS__);
}
public function getSourceImage(): Image
{
return $this->image;
}
/**
* @throws Exception
*/
public function getDefaultImage(): Img
{
$defaultConfig = $this->styleConfig['default'] ?? null;
if (!$defaultConfig) {
throw new Exception("No default config set for style “{$this->style}”");
}
return Img::create($this->image, $defaultConfig);
}
/**
* @throws Exception
*/
public function getSources(): ArrayList
{
$sources = ArrayList::create();
$sourcesConfig = $this->styleConfig['sources'] ?? [];
if (empty($sourcesConfig)) {
return $sources;
}
foreach ($sourcesConfig as $media => $sourceConfig) {
$source = Source::create($this->image, $media, $sourceConfig);
$sources->push($source);
}
return $sources;
}
}