| 1 |
<?php |
| 2 |
|
| 3 |
namespace AcyMailing\Helpers; |
| 4 |
|
| 5 |
use AcyMailing\Core\AcymObject; |
| 6 |
|
| 7 |
class ImageHelper extends AcymObject |
| 8 |
{ |
| 9 |
public string $error = ''; |
| 10 |
// New Height the picture should be |
| 11 |
public int $maxHeight; |
| 12 |
// New Width the picture should be |
| 13 |
public int $maxWidth; |
| 14 |
// Folder where pictures should be stored |
| 15 |
public string $destination; |
| 16 |
|
| 17 |
public function removePictures(string $text): string |
| 18 |
{ |
| 19 |
$return = preg_replace('#< *img((?!content_main_image)[^>])*>#Ui', '', $text); |
| 20 |
|
| 21 |
// Clean JCE caption |
| 22 |
return preg_replace('#< *div[^>]*class="jce_caption"[^>]*>[^<]*(< *div[^>]*>[^<]*<\/div>)*[^<]*<\/div>#Ui', '', $return); |
| 23 |
} |
| 24 |
|
| 25 |
public function available(): bool |
| 26 |
{ |
| 27 |
if (!function_exists('gd_info')) { |
| 28 |
$this->error = 'The GD library is not installed.'; |
| 29 |
|
| 30 |
return false; |
| 31 |
} |
| 32 |
if (!function_exists('getimagesize')) { |
| 33 |
$this->error = 'Cound not find getimagesize function'; |
| 34 |
|
| 35 |
return false; |
| 36 |
} |
| 37 |
if (!function_exists('imagealphablending')) { |
| 38 |
$this->error = "Please make sure you're using GD 2.0.1 or later version"; |
| 39 |
|
| 40 |
return false; |
| 41 |
} |
| 42 |
|
| 43 |
return true; |
| 44 |
} |
| 45 |
|
| 46 |
//This function will check all images from the input and return an output with the pictures transformed with the right size |
| 47 |
public function resizePictures(string $input): string |
| 48 |
{ |
| 49 |
$this->destination = ACYM_MEDIA.'resized'.DS; |
| 50 |
acym_createDir($this->destination); |
| 51 |
$content = acym_absoluteURL($input); |
| 52 |
|
| 53 |
//regex take all images: |
| 54 |
preg_match_all('#<img([^>]*)>#Ui', $content, $results); |
| 55 |
if (empty($results[1])) { |
| 56 |
return $input; |
| 57 |
} |
| 58 |
|
| 59 |
$replace = []; |
| 60 |
|
| 61 |
foreach ($results[1] as $onepicture) { |
| 62 |
//Check if there the "donotresize" element inside, we don't resize it. |
| 63 |
//It can be either in the class or in the filename itself |
| 64 |
if (strpos($onepicture, 'donotresize') !== false) { |
| 65 |
continue; |
| 66 |
} |
| 67 |
|
| 68 |
//Take the path |
| 69 |
if (!preg_match('#src="([^"]*)"#Ui', $onepicture, $path)) { |
| 70 |
continue; |
| 71 |
} |
| 72 |
$imageUrl = $path[1]; |
| 73 |
|
| 74 |
//images paths on joomla 4 have some content like : #joomlaImage... , we delete it to get and resize the image without errors |
| 75 |
$imageUrl = preg_replace('/#joomlaImage.*/', '', $imageUrl); |
| 76 |
|
| 77 |
//We are nice guys... sometimes users use www. or not... so we convert both, same thing for httpS or http |
| 78 |
$imageUrl = acym_internalUrlToPath($imageUrl); |
| 79 |
|
| 80 |
$newPicture = $this->generateThumbnail($imageUrl); |
| 81 |
|
| 82 |
$newDimension = 'max-width:'.$this->maxWidth.'px;max-height:'.$this->maxHeight.'px;'; |
| 83 |
|
| 84 |
//Maybe we don't need to resize anything... |
| 85 |
if (empty($newPicture)) { |
| 86 |
if (strpos($onepicture, 'style="') !== false) { |
| 87 |
$replace[$onepicture] = preg_replace('#style="([^"]*)"#Uis', 'style="'.$newDimension.'$1"', $onepicture); |
| 88 |
} else { |
| 89 |
$replace[$onepicture] = ' style="'.$newDimension.'" '.$onepicture; |
| 90 |
} |
| 91 |
continue; |
| 92 |
} |
| 93 |
|
| 94 |
//Because the ACYM_ROOT may be empty, we only make sure to replace the first instance found. |
| 95 |
$newPicture['file'] = preg_replace('#^'.preg_quote(ACYM_ROOT, '#').'#i', ACYM_LIVE, $newPicture['file']); |
| 96 |
$newPicture['file'] = str_replace(DS, '/', $newPicture['file']); |
| 97 |
//replace the image url now with the new one... |
| 98 |
$replaceImage = []; |
| 99 |
$replaceImage[$path[1]] = $newPicture['file']; |
| 100 |
//replace information if we had some (height,width...) |
| 101 |
if (preg_match_all('#(width|height)(:|=) *"?([0-9]+)#i', $onepicture, $resultsSize)) { |
| 102 |
foreach ($resultsSize[0] as $i => $oneArg) { |
| 103 |
$newVal = (strtolower($resultsSize[1][$i]) == 'width') ? $newPicture['width'] : $newPicture['height']; |
| 104 |
if ($newVal > $resultsSize[3][$i]) { |
| 105 |
continue; |
| 106 |
} |
| 107 |
$replaceImage[$oneArg] = str_replace($resultsSize[3][$i], $newVal, $oneArg); |
| 108 |
} |
| 109 |
} |
| 110 |
|
| 111 |
$replace[$onepicture] = str_replace(array_keys($replaceImage), $replaceImage, $onepicture); |
| 112 |
|
| 113 |
// Make sure that we resized the image |
| 114 |
if (strpos($replace[$onepicture], 'width') === false) { |
| 115 |
if (strpos($onepicture, 'style="') !== false) { |
| 116 |
$replace[$onepicture] = preg_replace('#style="([^"]*)"#Uis', 'style="'.$newDimension.'$1"', $replace[$onepicture]); |
| 117 |
} else { |
| 118 |
$replace[$onepicture] = ' style="'.$newDimension.'" '.$replace[$onepicture]; |
| 119 |
} |
| 120 |
} |
| 121 |
} |
| 122 |
|
| 123 |
if (!empty($replace)) { |
| 124 |
$input = str_replace(array_keys($replace), $replace, $content); |
| 125 |
} |
| 126 |
|
| 127 |
return $input; |
| 128 |
} |
| 129 |
|
| 130 |
public function generateThumbnail(string $picturePath): array |
| 131 |
{ |
| 132 |
$paramsPos = strpos($picturePath, '?'); |
| 133 |
if ($paramsPos !== false) { |
| 134 |
$picturePath = substr($picturePath, 0, $paramsPos); |
| 135 |
} |
| 136 |
|
| 137 |
[$currentwidth, $currentheight] = @getimagesize($picturePath); |
| 138 |
if (empty($currentwidth) || empty($currentheight)) { |
| 139 |
return []; |
| 140 |
} |
| 141 |
$factor = min($this->maxWidth / $currentwidth, $this->maxHeight / $currentheight); |
| 142 |
if ($factor >= 1) { |
| 143 |
return []; |
| 144 |
} |
| 145 |
$newWidth = round($currentwidth * $factor); |
| 146 |
$newHeight = round($currentheight * $factor); |
| 147 |
|
| 148 |
if (strpos($picturePath, 'http') === 0) { |
| 149 |
$filename = substr($picturePath, strrpos($picturePath, '/') + 1); |
| 150 |
} else { |
| 151 |
$filename = basename($picturePath); |
| 152 |
} |
| 153 |
|
| 154 |
if (substr($picturePath, 0, 10) == 'data:image') { |
| 155 |
//It's a picture in base64 encoding... we will apply an extension name and name based on the content... |
| 156 |
preg_match('#data:image/([^;]{1,5});#', $picturePath, $resultextension); |
| 157 |
if (empty($resultextension[1])) { |
| 158 |
return []; |
| 159 |
} |
| 160 |
$extension = $resultextension[1]; |
| 161 |
$name = md5($picturePath); |
| 162 |
} else { |
| 163 |
$extension = strtolower(substr($filename, strrpos($filename, '.') + 1)); |
| 164 |
$name = strtolower(substr($filename, 0, strrpos($filename, '.'))); |
| 165 |
//We add the creation date of the file so if the file is modified, we will generate a new thumbnail |
| 166 |
//No need to use the full date, the last 4 characters will be enough! |
| 167 |
$name .= substr(@filemtime($picturePath), -4); |
| 168 |
} |
| 169 |
|
| 170 |
$newImage = md5($picturePath).'-'.$name.'thumb'.$this->maxWidth.'x'.$this->maxHeight.'.'.$extension; |
| 171 |
if (empty($this->destination)) { |
| 172 |
$newFile = dirname($picturePath).DS.$newImage; |
| 173 |
} else { |
| 174 |
$newFile = $this->destination.$newImage; |
| 175 |
} |
| 176 |
|
| 177 |
//The new file already exists, we don't have to create a new one |
| 178 |
if (file_exists($newFile)) { |
| 179 |
return [ |
| 180 |
'file' => $newFile, |
| 181 |
'width' => $newWidth, |
| 182 |
'height' => $newHeight, |
| 183 |
]; |
| 184 |
} |
| 185 |
|
| 186 |
// Checks the real file type as it can be renamed, but not available on all servers |
| 187 |
if (function_exists('exif_imagetype')) { |
| 188 |
$imageRealType = exif_imagetype($picturePath); |
| 189 |
} else { |
| 190 |
if ($extension === 'gif') { |
| 191 |
$imageRealType = IMAGETYPE_GIF; |
| 192 |
} elseif ($extension === 'jpg' || $extension === 'jpeg') { |
| 193 |
$imageRealType = IMAGETYPE_JPEG; |
| 194 |
} elseif ($extension === 'png') { |
| 195 |
$imageRealType = IMAGETYPE_PNG; |
| 196 |
} elseif ($extension === 'webp') { |
| 197 |
$imageRealType = IMAGETYPE_WEBP; |
| 198 |
} else { |
| 199 |
return []; |
| 200 |
} |
| 201 |
} |
| 202 |
|
| 203 |
switch ($imageRealType) { |
| 204 |
case IMAGETYPE_GIF: |
| 205 |
$img = imagecreatefromgif($picturePath); |
| 206 |
break; |
| 207 |
case IMAGETYPE_JPEG: |
| 208 |
$img = imagecreatefromjpeg($picturePath); |
| 209 |
break; |
| 210 |
case IMAGETYPE_PNG: |
| 211 |
$img = imagecreatefrompng($picturePath); |
| 212 |
break; |
| 213 |
case IMAGETYPE_WEBP: |
| 214 |
if (function_exists('imagecreatefromwebp')) { |
| 215 |
$img = imagecreatefromwebp($picturePath); |
| 216 |
} |
| 217 |
break; |
| 218 |
default: |
| 219 |
return []; |
| 220 |
} |
| 221 |
|
| 222 |
if (empty($img)) { |
| 223 |
return []; |
| 224 |
} |
| 225 |
|
| 226 |
$thumb = imagecreatetruecolor($newWidth, $newHeight); |
| 227 |
|
| 228 |
if (in_array($imageRealType, [IMAGETYPE_GIF, IMAGETYPE_PNG])) { |
| 229 |
imagealphablending($thumb, false); |
| 230 |
imagesavealpha($thumb, true); |
| 231 |
} |
| 232 |
|
| 233 |
if (function_exists('imagecopyresampled')) { |
| 234 |
imagecopyresampled($thumb, $img, 0, 0, 0, 0, $newWidth, $newHeight, $currentwidth, $currentheight); |
| 235 |
} else { |
| 236 |
ImageCopyResized($thumb, $img, 0, 0, 0, 0, $newWidth, $newHeight, $currentwidth, $currentheight); |
| 237 |
} |
| 238 |
|
| 239 |
ob_start(); |
| 240 |
switch ($imageRealType) { |
| 241 |
case IMAGETYPE_GIF: |
| 242 |
$status = imagegif($thumb); |
| 243 |
break; |
| 244 |
case IMAGETYPE_JPEG: |
| 245 |
$status = imagejpeg($thumb, null, 100); |
| 246 |
break; |
| 247 |
case IMAGETYPE_PNG: |
| 248 |
$status = imagepng($thumb, null, 0); |
| 249 |
break; |
| 250 |
case IMAGETYPE_WEBP: |
| 251 |
$status = imagewebp($thumb, null, 100); |
| 252 |
break; |
| 253 |
} |
| 254 |
$imageContent = ob_get_clean(); |
| 255 |
|
| 256 |
$status = $status && acym_writeFile($newFile, $imageContent); |
| 257 |
imagedestroy($thumb); |
| 258 |
imagedestroy($img); |
| 259 |
|
| 260 |
//We could not create the picture... so let's resize it anyway |
| 261 |
if (!$status) { |
| 262 |
$newFile = $picturePath; |
| 263 |
} |
| 264 |
|
| 265 |
return [ |
| 266 |
'file' => $newFile, |
| 267 |
'width' => $newWidth, |
| 268 |
'height' => $newHeight, |
| 269 |
]; |
| 270 |
} |
| 271 |
} |
| 272 |
|
