image.class.php
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00001 <?php 00010 class helper_image extends helper_file { 00011 00017 protected $imgAct; 00018 00024 protected $imgTmp; 00025 00031 protected $info; 00032 00036 public function __destruct() { 00037 if ($this->imgAct && is_resource($this->imgAct)) 00038 @imagedestroy($this->imgAct); 00039 if ($this->imgTmp && is_resource($this->imgTmp)) 00040 @imagedestroy($this->imgTmp); 00041 } 00042 00051 public function upload($file, array $prm = array()) { 00052 $this->cfg->file = $file; 00053 if (!array_key_exists('fileSaveAdd', $prm)) 00054 $this->cfg->fileSave = $file; 00055 $this->cfg->setA($prm); 00056 $this->cfg->rebuild = true; 00057 return basename($this->build()); 00058 } 00059 00067 public function view($file, array $prm = array()) { 00068 $this->cfg->file = $this->addFilesRootIfNeeded($file); 00069 $this->cfg->setA($prm); 00070 $this->cfg->html = true; 00071 if ($this->cfg->originalView) { 00072 $this->cfg->fileSave = $this->cfg->file; 00073 $ret = $this->html(); 00074 } else { 00075 $this->cfg->fileSave = $this->makePath($this->cfg->file, $this->cfg->fileSaveAdd); 00076 $ret = $this->build(); 00077 } 00078 $fileWeb = str_replace($this->cfg->filesRoot, '', $this->cfg->fileSave); 00079 return str_replace( 00080 $this->cfg->fileSave, 00081 $this->cfg->webUri ? request::webUri($fileWeb) : request::uploadedUri($fileWeb), 00082 $ret); 00083 } 00084 00092 public function delete($file, array $prm=null) { 00093 file::delete($this->addFilesRootIfNeeded($file)); 00094 file::multipleDelete($this->addFilesRootIfNeeded($this->makePath($file, '*'))); 00095 } 00096 00104 public function makePath($file, $more=null) { 00105 if (is_null($more)) 00106 $more = md5($this->cfg->w.'_'.$this->cfg->h.'_'.$this->cfg->bgColor.'_'.$this->cfg->fit); 00107 if ($more) 00108 $more = '_'.$more; 00109 00110 return preg_replace( 00111 '/\.('.implode('|', $this->cfg->autoExt).')$/i', 00112 $more.'.'.file::getExt($file), 00113 $file); 00114 } 00115 00122 protected function addFilesRootIfNeeded($file) { 00123 if (strpos($file, $this->cfg->filesRoot) === false) 00124 $file = $this->cfg->filesRoot.$file; 00125 return $file; 00126 } 00127 00135 public function make(array $prm = array()) { 00136 $this->cfg->setA($prm); 00137 return $this->build(); 00138 } 00139 00140 public function valid(array $file, array $prm = array()) { 00141 $ret = parent::valid($file, $prm); 00142 if ($ret && count($file) && array_key_exists('tmp_name', $file) && file::exists($file['tmp_name'])) { 00143 $size = getimagesize($file['tmp_name']); 00144 if (!is_array($size) && $size[2] != IMAGETYPE_GIF && $size[2] != IMAGETYPE_JPEG && $size[2] != IMAGETYPE_PNG) 00145 return 'notValidImg'; 00146 } 00147 return $ret; 00148 } 00149 00155 protected function build() { 00156 $ret = null; 00157 if (file::exists($this->cfg->file)) { 00158 00159 if ($this->cfg->autoFileSave && empty($this->cfg->fileSave)) 00160 $this->cfg->fileSave = $this->makePath($this->cfg->file, $this->cfg->fileSaveAdd); 00161 00162 if ($this->cfg->rebuild || !file::exists($this->cfg->fileSave)) { 00163 $this->setImg($this->cfg->file); 00164 $change = false; 00165 if (is_array($this->cfg->crop)) { 00166 if ($this->crop($this->cfg->crop)) { 00167 // Save the new size 00168 $this->cfg->wAct = imagesx($this->imgAct); 00169 $this->cfg->hAct = imagesy($this->imgAct); 00170 $change = true; 00171 } 00172 } else { 00173 // Resize 00174 if ($this->cfg->resizeSmaller || 00175 ($this->cfg->w > 0 && $this->cfg->wAct > $this->cfg->w) || 00176 ($this->cfg->h > 0 && $this->cfg->hAct > $this->cfg->h)) { 00177 if ($this->resize(array( 00178 'w'=>$this->cfg->w, 00179 'h'=>$this->cfg->h, 00180 'bgColor'=>$this->cfg->bgColor, 00181 'fit'=>$this->cfg->fit 00182 ))) { 00183 // Save the new size 00184 $this->cfg->wAct = imagesx($this->imgAct); 00185 $this->cfg->hAct = imagesy($this->imgAct); 00186 if ($this->cfg->w || $this->cfg->h) 00187 $change = true; 00188 } 00189 } 00190 } 00191 00192 if (!empty($this->cfg->filters) && function_exists('imagefilter')) { 00193 foreach($this->cfg->filters as $prms) { 00194 if (!is_array($prms)) { 00195 $f = $prms; 00196 $prms = array(); 00197 } else 00198 $f = array_shift($prms); 00199 switch(count($prms)) { 00200 case 0: imagefilter($this->imgAct, $f); break; 00201 case 1: imagefilter($this->imgAct, $f, $prms[0]); break; 00202 case 2: imagefilter($this->imgAct, $f, $prms[0], $prms[1]); break; 00203 case 3: imagefilter($this->imgAct, $f, $prms[0], $prms[1], $prms[2]); break; 00204 default: imagefilter($this->imgAct, $f, $prms[0], $prms[1], $prms[2], $prms[3]); break; 00205 } 00206 } 00207 } 00208 00209 if ($this->cfg->grayFilter) { 00210 // Copy form $img to $imgDst With the parameter defined, with grayscale 00211 if (function_exists('imagefilter')) { 00212 imagefilter($this->imgAct, IMG_FILTER_GRAYSCALE); 00213 } else { 00214 // Manual Grayscale 00215 $imgTmp = $this->imgAct; 00216 $x = imagesx($imgTmp); 00217 $y = imagesy($imgTmp); 00218 $this->imgAct = imagecreatetruecolor($x, $y); 00219 imagecolorallocate($this->imgAct, 0, 0, 0); 00220 for ($i = 0; $i < $x; $i++) { 00221 for ($j = 0; $j < $y; $j++) { 00222 $rgb = imagecolorat($imgTmp, $i, $j); 00223 $r = ($rgb >> 16) & 0xFF; 00224 $g = ($rgb >> 8) & 0xFF; 00225 $b = $rgb & 0xFF; 00226 $color = max(array($r, $g, $b)); 00227 imagesetpixel($this->imgAct, $i, $j, imagecolorexact($this->imgAct, $color, $color, $color)); 00228 } 00229 } 00230 imagedestroy($imgTmp); 00231 } 00232 } 00233 00234 if (!empty($this->cfg->mask) && file::exists($this->cfg->mask)) { 00235 $this->mask($this->cfg->mask); 00236 $change = true; 00237 } 00238 00239 $ret = null; 00240 if (!$change) 00241 $this->cfg->fileSave = $this->cfg->file; 00242 00243 if (!empty($this->cfg->fileSave)) { 00244 if ($change) { 00245 if ($this->save($this->cfg->fileSave)) 00246 $ret = $this->cfg->fileSave; 00247 } else { 00248 if ($this->cfg->file != $this->cfg->fileSave) 00249 file::move($this->cfg->file, $this->cfg->fileSave); 00250 $ret = $this->cfg->fileSave; 00251 } 00252 } 00253 00254 if ($this->cfg->html) 00255 $ret = $this->html(); 00256 } else if ($this->cfg->html) { 00257 $ret = $this->html(); 00258 } else { 00259 $ret = $this->cfg->fileSave; 00260 } 00261 } 00262 00263 return $ret; 00264 } 00265 00271 protected function html(array $options = array()) { 00272 if (file::exists($this->cfg->fileSave)) { 00273 return utils::htmlTag('img', 00274 array_merge($options, $this->cfg->htmlDefOptions, array( 00275 'src'=>$this->cfg->fileSave, 00276 'alt'=>$this->cfg->alt, 00277 'width'=>$this->cfg->w ? $this->cfg->w : null, 00278 'height'=>$this->cfg->h ? $this->cfg->h : null, 00279 ))); 00280 } 00281 return null; 00282 } 00283 00290 public function setImg($file) { 00291 $this->cfg->img = $file; 00292 00293 $tmp = $this->createImage($file); 00294 if ($tmp) { 00295 $this->imgAct = $tmp[0]; 00296 $this->cfg->wAct = $tmp[1]; 00297 $this->cfg->hAct = $tmp[2]; 00298 return true; 00299 } else 00300 return false; 00301 } 00302 00308 public function save($file) { 00309 $ret = false; 00310 00311 switch (strtolower(file::getExt($file))) { 00312 case 'gif' : 00313 $ret = imagegif($this->imgAct, $file); 00314 break; 00315 case 'png' : 00316 $ret = imagepng($this->imgAct, $file); 00317 break; 00318 default: 00319 $ret = imagejpeg($this->imgAct, $file, $this->cfg->jpgQuality); 00320 break; 00321 } 00322 if ($ret) 00323 $this->cfg->fileSave = $file; 00324 return $ret; 00325 } 00326 00333 protected function createImage($file) { 00334 if (!file::exists($file) || ! is_file($file)) 00335 return false; 00336 $this->info = getimagesize($file); 00337 00338 $img = null; 00339 switch ($this->info[2]) { 00340 case IMAGETYPE_JPEG: 00341 $img = imagecreatefromjpeg($file); 00342 break; 00343 case IMAGETYPE_GIF: 00344 $img = imagecreatefromgif($file); 00345 imagealphablending($img, true); 00346 imagesavealpha($img, true); 00347 break; 00348 case IMAGETYPE_PNG: 00349 $img = imagecreatefrompng($file); 00350 imagealphablending($img, true); 00351 imagesavealpha($img, true); 00352 break; 00353 default: 00354 return false; 00355 } 00356 00357 return array(&$img, $this->info[0], $this->info[1]); 00358 } 00359 00371 protected function resize(array $prm = array()) { 00372 config::initTab($prm, array( 00373 'imgName'=>'Act', 00374 'w'=>0, 00375 'h'=>0, 00376 'fit'=>false, 00377 'bgColor'=>'ffffff' 00378 )); 00379 00380 $img = &$this->{'img'.$prm['imgName']}; 00381 $srcW = $this->cfg->get('w'.$prm['imgName']); 00382 $srcH = $this->cfg->get('h'.$prm['imgName']); 00383 00384 $srcX = 0; 00385 $srcY = 0; 00386 $dstX = 0; 00387 $dstY = 0; 00388 $scaleW = $prm['w'] / $srcW; 00389 $scaleH = $prm['h'] / $srcH; 00390 $dstW = $prm['w']; 00391 $dstH = $prm['h']; 00392 00393 if ($prm['w'] && $prm['h']) { 00394 // Dimensions are fixed 00395 if ($prm['fit']) { 00396 if ($scaleW > $scaleH) { 00397 $srcH = round($prm['h'] / $scaleW); 00398 $srcY = round(($this->cfg->get('h'.$prm['imgName']) - $srcH) / 2); 00399 } else { 00400 $srcW = round($prm['w'] / $scaleH); 00401 $srcX = round(($this->cfg->get('w'.$prm['imgName']) - $srcW) / 2); 00402 } 00403 } else { 00404 if ($scaleW > $scaleH) { 00405 $dstW = round($srcW * $scaleH); 00406 $dstX = round(($prm['w'] - $dstW) / 2); 00407 } else { 00408 $dstH = round($srcH * $scaleW); 00409 $dstY = round(($prm['h'] - $dstH) / 2); 00410 } 00411 } 00412 } else if ($prm['w']) { 00413 // Width is fixed 00414 $prm['h'] = round($srcH * $scaleW); 00415 $dstH = round($srcH * $scaleW); 00416 $prm['fit'] = true; 00417 } else if ($prm['h']) { 00418 // Height is fixed 00419 $prm['w'] = round($srcW * $scaleH); 00420 $dstW = round($srcW * $scaleH); 00421 $prm['fit'] = true; 00422 } else { 00423 // No dimensions requested, use the imgAct dimensions 00424 $prm['w'] = $this->cfg->wAct; 00425 $prm['h'] = $this->cfg->hAct; 00426 $dstW = $prm['w']; 00427 $dstH = $prm['h']; 00428 } 00429 00430 $imgDst = imagecreatetruecolor($prm['w'], $prm['h']); 00431 if ($this->info[2] == IMAGETYPE_GIF || $this->info[2] == IMAGETYPE_PNG) { 00432 imagealphablending($imgDst, true); 00433 imagesavealpha($imgDst, true); 00434 } 00435 00436 if (empty($prm['bgColor']) && ($this->info[2] == IMAGETYPE_GIF || $this->info[2] == IMAGETYPE_PNG)) { 00437 $transparency = imagecolortransparent($img); 00438 if ($transparency >= 0) { 00439 $trnprtIndex = imagecolortransparent($img); 00440 $transparentColor = imagecolorsforindex($img, $trnprtIndex); 00441 $transparency = imagecolorallocate($imgDst, $transparentColor['red'], $transparentColor['green'], $transparentColor['blue']); 00442 imagefill($imgDst, 0, 0, $transparency); 00443 imagecolortransparent($imgDst, $transparency); 00444 } else if ($this->info[2] == IMAGETYPE_PNG) { 00445 imagealphablending($imgDst, false); 00446 imagesavealpha($imgDst, true); 00447 $color = imagecolorallocatealpha($imgDst, 255, 255, 255, 127); 00448 imagefilledrectangle($imgDst, 0, 0, $prm['w'], $prm['h'], $color); 00449 } 00450 } else if (!$prm['fit']) { 00451 $cl = $this->hexa2dec($prm['bgColor']); 00452 $clR = imagecolorallocate($imgDst, $cl[0], $cl[1], $cl[2]); 00453 imagefill($imgDst, 0, 0, $clR); 00454 } 00455 00456 // Copy form $img to $imgDst With the parameter defined 00457 imagecopyresampled($imgDst, $img, $dstX, $dstY, $srcX, $srcY, $dstW, $dstH, $srcW, $srcH); 00458 00459 // Destroy the image ressource source 00460 imagedestroy($img); 00461 00462 // Store the new 00463 $this->{'img'.$prm['imgName']} = &$imgDst; 00464 00465 return true; 00466 } 00467 00473 public function mask($file) { 00474 // Create the mask image ressource 00475 $tmp = $this->createImage($file); 00476 if ($tmp) { 00477 $this->imgTmp = $tmp[0]; 00478 $this->cfg->wTmp = $tmp[1]; 00479 $this->cfg->hTmp = $tmp[2]; 00480 00481 // Resize the mask 00482 if ($this->resize(array( 00483 'imgName'=>'Tmp', 00484 'bgColor'=>false 00485 ))) { 00486 // Save the new size 00487 $this->cfg->wTmp = imagesx($this->imgTmp); 00488 $this->cfg->hTmp = imagesy($this->imgTmp); 00489 } 00490 00491 imagecopymerge($this->imgAct, $this->imgTmp, 0, 0, 0, 0, $this->cfg->wAct, $this->cfg->hAct, 100); 00492 } 00493 } 00494 00505 protected function crop(array $prm) { 00506 config::initTab($prm, array( 00507 'x'=>-1, 00508 'y'=>-1, 00509 'w'=>0, 00510 'h'=>0 00511 )); 00512 $x = $prm['x']; 00513 $y = $prm['y']; 00514 $w = $prm['w']; 00515 $h = $prm['h']; 00516 00517 if ($w + $h == 0) { 00518 $w = $this->cfg->w; 00519 $h = $this->cfg->h; 00520 } else { 00521 if ($w == 0) 00522 $w = $this->cfg->h * $h / $this->cfg->w; 00523 if ($h == 0) 00524 $h = $this->cfg->w * $w / $this->cfg->h; 00525 } 00526 00527 if ($x == -1) 00528 $x = round($this->cfg->wAct / 2 - $w / 2); 00529 00530 if ($y == -1) 00531 $y = round($this->cfg->hAct / 2 - $h / 2); 00532 00533 $this->imgTmp = imagecreatetruecolor($this->cfg->w, $this->cfg->h); 00534 imagecopyresampled($this->imgTmp, $this->imgAct, 0, 0, $x, $y, $this->cfg->w, $this->cfg->h, $w, $h); 00535 00536 $this->imgAct = $this->imgTmp; 00537 00538 return true; 00539 } 00540 00547 protected function hexa2dec($col) { 00548 return array( 00549 base_convert(substr($col, 0, 2), 16, 10), 00550 base_convert(substr($col, 2, 2), 16, 10), 00551 base_convert(substr($col, 4, 2), 16, 10) 00552 ); 00553 } 00554 00555 }
