ArtboxImageHelper.php
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<?php
namespace common\components\artboximage;
use Yii;
use yii\base\Object;
use yii\helpers\ArrayHelper;
use yii\helpers\Html;
class ArtboxImageHelper extends Object {
/** @var ArtboxImage $imageDriver */
private static $imageDriver;
private static $presets;
public function getDriver() {
if (empty(self::$imageDriver)) {
self::$imageDriver = Yii::$app->artboximage;
}
return self::$imageDriver;
}
/**
* Returns the preset from config array
* @param $preset
*
* @return null
*/
public function getPreset($preset) {
if (empty(self::$presets)) {
self::$presets = self::getDriver()->presets;
}
return empty(self::$presets[$preset]) ? null : self::$presets[$preset];
}
/**
* Gets html image tag with needed image
* @param $file
* @param $preset
* @param array $imgOptions
*
* @return string
*/
public static function getImage($file, $preset, $imgOptions = []) {
$preset_alias = is_array($preset) ? array_keys($preset)[0] : null;
return Html::img(self::getImageSrc($file, $preset, $preset_alias), $imgOptions);
}
public static function getLazyDiv($file, $preset, $options = [], $content = '') {
$preset_alias = is_array($preset) ? array_keys($preset)[0] : null;
if(!empty($options['class'])) {
$options['class'] = $options['class'] . ' lazy';
} else {
$options['class'] = 'lazy';
}
$options['data-src'] = self::getImageSrc($file, $preset, $preset_alias);
return Html::tag('div', $content, $options);
}
/**
* Gets path to image with selected preset
* @param $file
* @param $preset
* @param null $preset_alias
*
* @return bool|mixed
*/
public static function getImageSrc($file, $preset, $preset_alias = null) {
if (is_string($preset)) {
$preset_alias = $preset;
$preset = self::getPreset($preset);
}
if (empty($preset) || empty($preset_alias)) {
return $file;
}
$filePath = self::getPathFromUrl($file);
if (!file_exists($filePath) || !preg_match('#^(.*)\.(' . self::getExtensionsRegexp() . ')$#', $file, $matches)) {
return $file;
}
return self::getPresetUrl($filePath, $preset, $preset_alias);
}
/**
* @param $model
* @param $modelField
* @param string $formField
* @param bool $multiple
*
* @return mixed
*/
public static function fileinputWidget($model, $modelField, $formField = 'fileUpload', $multiple = false) {
return Yii::$app->artboximage->fileinputWidget($model, $modelField, $formField, $multiple);
}
/**
* @param $url
*
* @return mixed
*/
private static function getPathFromUrl($url) {
return substr_replace($url, self::getDriver()->rootPath, 0, strlen(self::getDriver()->rootUrl));
}
/**
* @param $path
*
* @return mixed
*/
private static function getUrlFromPath($path) {
return substr_replace($path, self::getDriver()->rootUrl, 0, strlen(self::getDriver()->rootPath));
}
/**
* Gets path to image with preset
* @param $filePath
* @param $preset
* @param $preset_alias
*
* @return bool|mixed
*/
private static function getPresetUrl($filePath, $preset, $preset_alias) {
$pathinfo = pathinfo($filePath);
$presetPath = $pathinfo['dirname'] .'/styles/'. strtolower($preset_alias);
$presetFilePath = $presetPath .'/'. $pathinfo['basename'];
$presetUrl = self::getUrlFromPath($presetFilePath);
if (file_exists($presetFilePath)) {
return $presetUrl;
}
if (!file_exists($presetPath)) {
@mkdir($presetPath, 0777, true);
}
$output = self::createPresetImage($filePath, $preset, $preset_alias);
if ( !empty($output) ) {
$f = fopen($presetFilePath, 'w');
fwrite($f, $output);
fclose($f);
return $presetUrl;
}
return false;
}
/**
* Create new image from existing one and with selected preset
* @param $filePath
* @param $preset
* @param $preset_alias
*
* @return string
*/
private static function createPresetImage($filePath, $preset, $preset_alias)
{
$image = self::getDriver()->load($filePath);
foreach ($preset as $action => $data) {
switch($action) {
case 'resize':
$width = empty($data['width']) ? null : $data['width'];
$height = empty($data['height']) ? null : $data['height'];
$master = empty($data['master']) ? null : $data['master'];
$image->resize($width, $height, $master);
break;
case 'flip':
$image->flip(@$data['direction']);
break;
default:
break;
}
}
return $image->render();
}
/**
* Get extensions regexp
* @return string regexp
*/
private function getExtensionsRegexp()
{
$keys = array_keys(self::getDriver()->extensions);
return '(?i)' . join('|', $keys);
}
/**
* Get size from suffix
* @param string $suffix
* @return string size
*/
private function getSizeFromSuffix($suffix)
{
return array_search($suffix, $this->getSizeSuffixes());
}
/**
* Get suffix from size
* @param string $size
* @return string suffix
*/
private function getSufixFromSize($size)
{
return ArrayHelper::getValue($this->getSizeSuffixes(), $size);
}
private function getSizeSuffixes()
{
$suffixes = [];
foreach ($this->sizes as $size => $sizeConf) {
$suffixes[$size] = ArrayHelper::getValue($this->sizeSuffixes, $size, $this->defaultSizeSuffix . $size);
}
return $suffixes;
}
}