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<?php |
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|
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namespace AcyMailing\Helpers; |
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|
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use AcyMailing\Core\AcymObject; |
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|
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class ImageHelper extends AcymObject |
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{ |
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var $error; |
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var $maxHeight; |
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var $maxWidth; |
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var $destination; |
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|
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public function removePictures($text) |
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{ |
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$return = preg_replace('#< *img((?!content_main_image)[^>])*>#Ui', '', $text); |
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$return = preg_replace('#< *div[^>]*class="jce_caption"[^>]*>[^<]*(< *div[^>]*>[^<]*<\/div>)*[^<]*<\/div>#Ui', '', $return); |
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|
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return $return; |
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} |
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|
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public function available() |
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{ |
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if (!function_exists('gd_info')) { |
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$this->error = 'The GD library is not installed.'; |
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|
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return false; |
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} |
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if (!function_exists('getimagesize')) { |
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$this->error = 'Cound not find getimagesize function'; |
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|
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return false; |
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} |
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if (!function_exists('imagealphablending')) { |
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$this->error = "Please make sure you're using GD 2.0.1 or later version"; |
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|
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return false; |
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} |
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|
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return true; |
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} |
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|
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public function resizePictures($input) |
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{ |
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$this->destination = ACYM_MEDIA.'resized'.DS; |
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acym_createDir($this->destination); |
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$content = acym_absoluteURL($input); |
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|
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preg_match_all('#<img([^>]*)>#Ui', $content, $results); |
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if (empty($results[1])) { |
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return $input; |
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} |
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|
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$replace = []; |
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|
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foreach ($results[1] as $onepicture) { |
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if (strpos($onepicture, 'donotresize') !== false) { |
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continue; |
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} |
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|
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if (!preg_match('#src="([^"]*)"#Ui', $onepicture, $path)) { |
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continue; |
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} |
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$imageUrl = $path[1]; |
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|
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$imageUrl = preg_replace('/#joomlaImage.*/', '', $imageUrl); |
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|
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$imageUrl = acym_internalUrlToPath($imageUrl); |
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|
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$newPicture = $this->generateThumbnail($imageUrl); |
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|
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$newDimension = 'max-width:'.$this->maxWidth.'px;max-height:'.$this->maxHeight.'px;'; |
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|
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if (!$newPicture) { |
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if (strpos($onepicture, 'style="') !== false) { |
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$replace[$onepicture] = preg_replace('#style="([^"]*)"#Uis', 'style="'.$newDimension.'$1"', $onepicture); |
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} else { |
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$replace[$onepicture] = ' style="'.$newDimension.'" '.$onepicture; |
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} |
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continue; |
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} |
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|
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$newPicture['file'] = preg_replace('#^'.preg_quote(ACYM_ROOT, '#').'#i', ACYM_LIVE, $newPicture['file']); |
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$newPicture['file'] = str_replace(DS, '/', $newPicture['file']); |
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$replaceImage = []; |
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$replaceImage[$path[1]] = $newPicture['file']; |
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if (preg_match_all('#(width|height)(:|=) *"?([0-9]+)#i', $onepicture, $resultsSize)) { |
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foreach ($resultsSize[0] as $i => $oneArg) { |
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$newVal = (strtolower($resultsSize[1][$i]) == 'width') ? $newPicture['width'] : $newPicture['height']; |
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if ($newVal > $resultsSize[3][$i]) { |
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continue; |
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} |
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$replaceImage[$oneArg] = str_replace($resultsSize[3][$i], $newVal, $oneArg); |
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} |
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} |
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|
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$replace[$onepicture] = str_replace(array_keys($replaceImage), $replaceImage, $onepicture); |
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|
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if (strpos($replace[$onepicture], 'width') === false) { |
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if (strpos($onepicture, 'style="') !== false) { |
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$replace[$onepicture] = preg_replace('#style="([^"]*)"#Uis', 'style="'.$newDimension.'$1"', $replace[$onepicture]); |
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} else { |
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$replace[$onepicture] = ' style="'.$newDimension.'" '.$replace[$onepicture]; |
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} |
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} |
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} |
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|
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if (!empty($replace)) { |
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$input = str_replace(array_keys($replace), $replace, $content); |
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} |
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|
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return $input; |
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} |
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|
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public function generateThumbnail($picturePath) |
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{ |
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$paramsPos = strpos($picturePath, '?'); |
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if ($paramsPos !== false) $picturePath = substr($picturePath, 0, $paramsPos); |
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|
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[$currentwidth, $currentheight] = @getimagesize($picturePath); |
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if (empty($currentwidth) || empty($currentheight)) { |
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return false; |
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} |
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$factor = min($this->maxWidth / $currentwidth, $this->maxHeight / $currentheight); |
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if ($factor >= 1) { |
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return false; |
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} |
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$newWidth = round($currentwidth * $factor); |
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$newHeight = round($currentheight * $factor); |
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|
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if (strpos($picturePath, 'http') === 0) { |
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$filename = substr($picturePath, strrpos($picturePath, '/') + 1); |
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} else { |
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$filename = basename($picturePath); |
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} |
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|
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if (substr($picturePath, 0, 10) == 'data:image') { |
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preg_match('#data:image/([^;]{1,5});#', $picturePath, $resultextension); |
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if (empty($resultextension[1])) { |
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return false; |
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} |
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$extension = $resultextension[1]; |
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$name = md5($picturePath); |
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} else { |
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$extension = strtolower(substr($filename, strrpos($filename, '.') + 1)); |
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$name = strtolower(substr($filename, 0, strrpos($filename, '.'))); |
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$name .= substr(@filemtime($picturePath), -4); |
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} |
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|
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$newImage = md5($picturePath).'-'.$name.'thumb'.$this->maxWidth.'x'.$this->maxHeight.'.'.$extension; |
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if (empty($this->destination)) { |
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$newFile = dirname($picturePath).DS.$newImage; |
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} else { |
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$newFile = $this->destination.$newImage; |
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} |
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|
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if (file_exists($newFile)) { |
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return [ |
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'file' => $newFile, |
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'width' => $newWidth, |
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'height' => $newHeight, |
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]; |
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} |
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|
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if (function_exists('exif_imagetype')) { |
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$imageRealType = exif_imagetype($picturePath); |
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} else { |
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if ($extension === 'gif') { |
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$imageRealType = IMAGETYPE_GIF; |
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} elseif ($extension === 'jpg' || $extension === 'jpeg') { |
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$imageRealType = IMAGETYPE_JPEG; |
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} elseif ($extension === 'png') { |
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$imageRealType = IMAGETYPE_PNG; |
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} elseif ($extension === 'webp') { |
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$imageRealType = IMAGETYPE_WEBP; |
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} else { |
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return false; |
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} |
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} |
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|
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switch ($imageRealType) { |
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case IMAGETYPE_GIF: |
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$img = imagecreatefromgif($picturePath); |
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break; |
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case IMAGETYPE_JPEG: |
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$img = imagecreatefromjpeg($picturePath); |
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break; |
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case IMAGETYPE_PNG: |
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$img = imagecreatefrompng($picturePath); |
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break; |
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case IMAGETYPE_WEBP: |
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if (function_exists('imagecreatefromwebp')) { |
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$img = imagecreatefromwebp($picturePath); |
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} |
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break; |
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default: |
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return false; |
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} |
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|
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if (empty($img)) { |
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return false; |
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} |
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|
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$thumb = imagecreatetruecolor($newWidth, $newHeight); |
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|
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if (in_array($imageRealType, [IMAGETYPE_GIF, IMAGETYPE_PNG])) { |
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imagealphablending($thumb, false); |
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imagesavealpha($thumb, true); |
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} |
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|
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if (function_exists('imagecopyresampled')) { |
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imagecopyresampled($thumb, $img, 0, 0, 0, 0, $newWidth, $newHeight, $currentwidth, $currentheight); |
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} else { |
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ImageCopyResized($thumb, $img, 0, 0, 0, 0, $newWidth, $newHeight, $currentwidth, $currentheight); |
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} |
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|
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ob_start(); |
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switch ($imageRealType) { |
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case IMAGETYPE_GIF: |
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$status = imagegif($thumb); |
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break; |
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case IMAGETYPE_JPEG: |
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$status = imagejpeg($thumb, null, 100); |
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break; |
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case IMAGETYPE_PNG: |
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$status = imagepng($thumb, null, 0); |
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break; |
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case IMAGETYPE_WEBP: |
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$status = imagewebp($thumb, null, 100); |
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break; |
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} |
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$imageContent = ob_get_clean(); |
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|
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$status = $status && acym_writeFile($newFile, $imageContent); |
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imagedestroy($thumb); |
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imagedestroy($img); |
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|
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if (!$status) { |
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$newFile = $picturePath; |
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} |
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|
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return [ |
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'file' => $newFile, |
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'width' => $newWidth, |
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'height' => $newHeight, |
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]; |
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} |
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} |
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|
