<?php /** * Helper class for generating thumbnails * @package News Show Pro GK5 * @Copyright (C) 2009-2013 Gavick.com * @ All rights reserved * @ Joomla! is Free Software * @license - http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL * @version $Revision: GK5 1.3.5 $ **/ // access restriction defined('_JEXEC') or die('Restricted access'); /* This class uses options of module: - cache time - quality - image width - image height - background color - image stretch */ class NSP_GK5_Thumbs { /* function to change file path to filename. For example: ./images/stories/demo.jpg will be translated to: stories.demo.jpg (in this situation mirror of ./images/ directory isn't necessary) */ static function translateName($name,$mod_id, $k2_mode = false, $vm_mode = false, $image_type = '', $downloaded = false, $filename = null, $links = false, $hikashop_mode = false, $solidres_mode = false) { // check the mode if($downloaded || stripos($name, 'http://') !== FALSE || stripos($name, 'https://') !== FALSE) { if($downloaded) { $name = 'downloaded.' . $filename; $ext = substr($name, -4); $name = substr($name, 0, -4); return $name . $mod_id . ($links ? '_links' : '') . $ext; } else { $slashpos = strrpos($name, '/'); $filename = substr($name, $slashpos + 1); $name = 'downloaded.' . $filename; $ext = substr($name, -4); $name = substr($name, 0, -4); return $name . $mod_id . ($links ? '_links' : '') . $ext; } } else { $name = NSP_GK5_Thumbs::getRealPath($name, $k2_mode, $vm_mode, $hikashop_mode); $start = ($k2_mode || $vm_mode || $hikashop_mode || $solidres_mode) ? (($k2_mode || $hikashop_mode || $solidres_mode) ? strpos($name, DS.'media'.DS) : strpos($name, DS.'components'.DS)) : strpos($name, DS.'images'.DS); $name = ($k2_mode || $vm_mode) ? (($k2_mode) ? substr($name, $start+7) : substr($name, $start+12)) : substr($name, $start+8); $ext = substr($name, -4); $name = substr($name, 0, -4); $name = str_replace(DS,'.',$name); $name .= $mod_id . $image_type . ($links ? '_links' : '') . $ext; return $name; } } // the same function for the output /*function translateNameOutput($name,$mod_id, $k2_mode = false, $vm_mode = false, $image_type = '') { $name = NSP_GK5_Thumbs::getRealPath($name, $k2_mode, $vm_mode); $start = ($k2_mode || $vm_mode) ? (($k2_mode) ? strpos($name, DS.'media'.DS) : strpos($name, DS.'components'.DS)) : strpos($name, DS.'images'.DS); $name = ($k2_mode || $vm_mode) ? (($k2_mode) ? substr($name, $start+7) : substr($name, $start+12)) : substr($name, $start+8); $ext = substr($name, -4); $name = substr($name, 0, -4); $name = str_replace(DS,'.',$name); $name .= $mod_id.$image_type.$ext; $special = NSP_GK5_Thumbs::checkSpecialImages($name); if($special > 0) { if($special == 1) { $name = substr($name, 0, -4); $name = str_replace(DS,'.',$name); $name .= '_cropped'.$ext; } if($special == 2) { $name = substr($name, 0, -4); $name = str_replace(DS,'.',$name); $name .= '_noscale'.$ext; } } return $name; }*/ // function used to get the custom media path static function getMediaPath() { $imagemanager = JComponentHelper::getParams('com_media'); $imagepath = $imagemanager->get('image_path', ''); return $imagepath; } // function to change file path to real path. static function getRealPath($path, $k2_mode = false, $vm_mode = false, $hikashop_mode = false, $solidres_mode = false) { $start = ($k2_mode || $vm_mode || $hikashop_mode || $solidres_mode) ? (($k2_mode || $hikashop_mode || $solidres_mode) ? strpos($path, 'media/') : strpos($path, 'components/')) : strpos($path, self::getMediaPath()); $path = './'.substr($path, $start); return realpath($path); } /* function to check cache this function checks if file exists in cache directory and checks if time of file life isn't too long */ static function checkCache($filename, $cache_time) { if($cache_time === FALSE) { $cache_time = 100 * 365 * 24 * 60 * 60; } $cache_dir = JPATH_ROOT.DS.'modules'.DS.'mod_news_pro_gk5'.DS.'cache'.DS; $file = $cache_dir.$filename; return (!is_file($file) || $cache_time == 0) ? FALSE : (filemtime($file) + 60 * $cache_time > time()); } /* function to check if _cropped / _noscale images exists return: 0 - when any images exist 1 - when _cropped image exists 2 - when _noscale image exists */ static function checkSpecialImages($path) { $cache_dir = JPATH_ROOT.DS.'modules'.DS.'mod_news_pro_gk5'.DS.'cache'.DS; // generate the names $ext = substr($path, -4); $path = substr($path, 0, -4); $path = str_replace(DS,'.',$path); $cropped_path = $path . '_cropped' . $ext; $noscale_path = $path . '_noscale' . $ext; // check if the specified files exists if(is_file($cache_dir . $cropped_path)) { return 1; } else if(is_file($cache_dir . $noscale_path)) { return 2; } else { return 0; } } // Creating thumbnails static function createThumbnail( $path, $config, $k2_mode = false, $vm_mode = false, $img_rel = '', $links = false, $hikashop_mode = false, $solidres_mode = false ) { if($config['use_curl_download'] == 0 && (stripos($path, 'http://') || stripos($path, 'https://'))) { return false; } // importing classes jimport('joomla.filesystem.file'); jimport('joomla.filesystem.folder'); jimport('joomla.filesystem.path'); //script configuration - increase memory limit to selected value ini_set('memory_limit', $config['memory_limit']); // cache dir $cache_dir = JPATH_ROOT.DS.'modules'.DS.'mod_news_pro_gk5'.DS.'cache'.DS; // downloaded and filename variables $downloaded = false; $imgname = ''; // check if the file is external if(strpos($path,'http://') !== FALSE || strpos($path,'https://') !== FALSE) { // check if the file was downloaded $imgname = ''; $slashpos = strrpos($path, '/'); $imgname = substr($path, $slashpos + 1); // check if the file exists if(!file_exists(JPATH_ROOT . DS . 'modules' . DS . 'mod_news_pro_gk5' . DS . 'cache' . DS . 'downloaded' . DS . $imgname)) { // if not - download the file if(function_exists('curl_init')) { // initializing connection $curl = curl_init(); // saves us before putting directly results of request curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE); // check the source of request curl_setopt($curl, CURLOPT_URL, $path); // timeout in seconds curl_setopt($curl, CURLOPT_TIMEOUT, 20); // useragent curl_setopt($curl, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']); // reading content $img_content = curl_exec($curl); // closing connection curl_close($curl); // check the results (curl_exec return FALSE on failure) and its length if($img_content !== FALSE && strlen($img_content) > 0) { // save the downloaded image $fp = fopen(JPATH_ROOT . DS . 'modules' . DS . 'mod_news_pro_gk5' . DS . 'cache' . DS . 'downloaded' . DS . $imgname, 'x'); fwrite($fp, $img_content); fclose($fp); // change the path to the downloaded file $path = 'modules' . DS . 'mod_news_pro_gk5' . DS . 'cache' . DS . 'downloaded' . DS . $imgname; $downloaded = true; } else { return false; } } else { return false; } } else { $path = 'modules' . DS . 'mod_news_pro_gk5' . DS . 'cache' . DS . 'downloaded' . DS . $imgname; $downloaded = true; } } // checking the special images $check_result = NSP_GK5_Thumbs::checkSpecialImages(NSP_GK5_Thumbs::translateName($path,$config['module_id'], $k2_mode, $vm_mode, '', $downloaded, $imgname, $links, $hikashop_mode, $solidres_mode)); // preparing an array with the image class values $img_rels = array(); // check if any classes exists in the image if($img_rel !== '') { $img_rels = explode(' ', $img_rel); } // no scale images if($check_result == 2) { // NOSCALE if(NSP_GK5_Thumbs::checkCache(NSP_GK5_Thumbs::translateName($path,$config['module_id'], $k2_mode, $vm_mode, '_noscale', $downloaded, $imgname, $links), false, $config['module_id'], $hikashop_mode, $solidres_mode)){ return array(TRUE, NSP_GK5_Thumbs::translateName($path,$config['module_id'], $k2_mode, $vm_mode, '_noscale', $downloaded, $imgname, $links, $hikashop_mode, $solidres_mode)); } else { // file path $file = NSP_GK5_Thumbs::getRealPath($path, $k2_mode, $vm_mode, '_noscale', $hikashop_mode, $solidres_mode); // filename $filename = NSP_GK5_Thumbs::translateName($path,$config['module_id'], $k2_mode, $vm_mode, '_noscale', $downloaded, $imgname, $links, $hikashop_mode, $solidres_mode); // Getting informations about image if(is_file($file)){ $imageData = getimagesize($file); $img_w = str_replace('px','',str_replace('%','', $links ? $config['links_img_width'] : $config['img_width'])); $img_h = str_replace('px','',str_replace('%','', $links ? $config['links_img_height'] : $config['img_height'])); // loading image depends from type of image if($imageData['mime'] == 'image/jpeg' || $imageData['mime'] == 'image/pjpeg' || $imageData['mime'] == 'image/jpg') $imageSource = @imagecreatefromjpeg($file); elseif($imageData['mime'] == 'image/gif') $imageSource = @imagecreatefromgif($file); else $imageSource = @imagecreatefrompng($file); // here can be exist an error when image is to big - then class return blank page // setting image size in variables $imageSourceWidth = imagesx($imageSource); $imageSourceHeight = imagesy($imageSource); $imageBG = imagecreatetruecolor($img_w, $img_h); // If image is JPG or GIF if($imageData['mime'] == 'image/png') { $imageBG = imagecreatetruecolor($img_w, $img_h); // enable transparent background if($config['img_bg'] == 'transparent'){ // create transparent color $rgb = imagecolorallocatealpha($imageBG, 0, 0, 0, 127); } else {// create normal color $bg = $config['img_bg']; // translate hex to RGB $hex_color = strtolower(trim($bg,'#;&Hh')); $bg = array_map('hexdec',explode('.',wordwrap($hex_color, ceil(strlen($hex_color)/3),'.',1))); // creating color $rgb = imagecolorallocate($imageBG, $bg[0], $bg[1], $bg[2]); } // filling the canvas imagefill($imageBG, 0, 0, $rgb); // enabling transparent settings for better quality imagealphablending($imageBG, false); imagesavealpha($imageBG, true); } // $imageSourceNWidth = $img_w; $imageSourceNHeight = $img_h; $base_x = 0; $base_y = 0; // copy image imagecopyresampled($imageBG, $imageSource, $base_x, $base_y, 0, 0, $imageSourceNWidth, $imageSourceNHeight, $imageSourceWidth, $imageSourceHeight); // save image depends from MIME type if($imageData['mime'] == 'image/jpeg' || $imageData['mime'] == 'image/pjpeg' || $imageData['mime'] == 'image/jpg') imagejpeg($imageBG,$cache_dir.$filename, $config['img_quality']); elseif($imageData['mime'] == 'image/gif') imagegif($imageBG, $cache_dir.$filename); else imagepng($imageBG, $cache_dir.$filename); // result return array(TRUE, $filename); } else { return FALSE; } } } else { // cropped or normal image if( NSP_GK5_Thumbs::checkCache( NSP_GK5_Thumbs::translateName( $path, $config['module_id'], $k2_mode, $vm_mode, ($check_result == 1) ? '_cropped' : '', $downloaded, $imgname, $links, $hikashop_mode, $solidres_mode ), isset($config['thumbs_cache_time']) ? $config['thumbs_cache_time'] : '60', $config['module_id'] )){ return array(TRUE, NSP_GK5_Thumbs::translateName($path, $config['module_id'], $k2_mode, $vm_mode, ($check_result == 1) ? '_cropped' : '', $downloaded, $imgname, $links, $hikashop_mode, $solidres_mode)); } else { // file path $file = NSP_GK5_Thumbs::getRealPath($path, $k2_mode, $vm_mode, ($check_result == 1) ? '_cropped' : '', $hikashop_mode, $solidres_mode); // filename $filename = NSP_GK5_Thumbs::translateName($path,$config['module_id'], $k2_mode, $vm_mode, ($check_result == 1) ? '_cropped' : '', $downloaded, $imgname, $links, $hikashop_mode, $solidres_mode); // Getting informations about image if(is_file($file)){ $imageData = getimagesize($file); $img_w = str_replace('px','',str_replace('%','', $links ? $config['links_img_width'] : $config['img_width'])); $img_h = str_replace('px','',str_replace('%','',$links ? $config['links_img_height'] : $config['img_height'])); // loading image depends from type of image if( $imageData['mime'] == 'image/jpeg' || $imageData['mime'] == 'image/pjpeg' || $imageData['mime'] == 'image/jpg' ) { $imageSource = @imagecreatefromjpeg($file); } elseif ($imageData['mime'] == 'image/gif') { $imageSource = @imagecreatefromgif($file); } else { $imageSource = @imagecreatefrompng($file); } // check if the proper image resource was created if(!$imageSource) return FALSE; // here can be exist an error when image is to big - then class return blank page // setting image size in variables $imageSourceWidth = imagesx($imageSource); $imageSourceHeight = imagesy($imageSource); // variables for cropping $top_crop = floor(($imageSourceHeight * $config['simple_crop_top']) / 100); $bottom_crop = floor(($imageSourceHeight * $config['simple_crop_bottom']) / 100); $left_crop = floor(($imageSourceWidth * $config['simple_crop_left']) / 100); $right_crop = floor(($imageSourceWidth * $config['simple_crop_right']) / 100); // get the cropping rules foreach($config['crop_rules'] as $rule) { if(is_string($rule['type']) && count($img_rels)) { foreach($img_rels as $rel) { if($rule['type'] == $rel) { $top_crop = $rule['top']; $bottom_crop = $rule['bottom']; $left_crop = $rule['left']; $right_crop = $rule['right']; break; } } } else { if( $rule['type']['width'] == $imageSourceWidth && $rule['type']['height'] == $imageSourceHeight) { $top_crop = $rule['top']; $bottom_crop = $rule['bottom']; $left_crop = $rule['left']; $right_crop = $rule['right']; break; } } } // Creating blank canvas if($config['img_keep_aspect_ratio']) { // calculate ratio for first scaling $ratio = ($imageSourceWidth > $imageSourceHeight) ? $img_w / $imageSourceWidth : $img_h / $imageSourceHeight; // calculate new image size $imageSourceNWidth = ($imageSourceWidth - ($left_crop + $right_crop)) * $ratio; $imageSourceNHeight = ($imageSourceHeight - ($top_crop + $bottom_crop)) * $ratio; // calculate ratio for second scaling if($img_w > $img_h){ if($imageSourceNHeight > $img_h){ $ratio2 = $img_h / $imageSourceNHeight; $imageSourceNHeight *= $ratio2; $imageSourceNWidth *= $ratio2; } } else { if($imageSourceNWidth > $img_w){ $ratio2 = $img_w / $imageSourceNWidth; $imageSourceNHeight *= $ratio2; $imageSourceNWidth *= $ratio2; } } $img_w = $imageSourceNWidth; $img_h = $imageSourceNHeight; } $imageBG = imagecreatetruecolor($img_w, $img_h); // If image is JPG or GIF if($imageData['mime'] == 'image/jpeg' || $imageData['mime'] == 'image/pjpeg' || $imageData['mime'] == 'image/jpg' || $imageData['mime'] == 'image/gif') { // when bg is set to transparent - use black background if($config['img_bg'] == 'transparent'){ $bgColorR = 0; $bgColorG = 0; $bgColorB = 0; } else { // in other situation - translate hex to RGB $bg = $config['img_bg']; if(strlen($bg) == 4) $bg = $bg[0].$bg[1].$bg[1].$bg[2].$bg[2].$bg[3].$bg[3]; $hex_color = strtolower(trim($bg,'#;&Hh')); $bg = array_map('hexdec',explode('.',wordwrap($hex_color, ceil(strlen($hex_color)/3),'.',1))); $bgColorR = $bg[0]; $bgColorG = $bg[1]; $bgColorB = $bg[2]; } // Creating color $rgb = imagecolorallocate($imageBG, $bgColorR, $bgColorG, $bgColorB); // filling canvas with new color imagefill($imageBG, 0, 0, $rgb); } else {// for PNG images if($config['img_keep_aspect_ratio']) { // calculate ratio for first scaling $ratio = ($imageSourceWidth > $imageSourceHeight) ? $img_w / $imageSourceWidth : $img_h / $imageSourceHeight; // calculate new image size $imageSourceNWidth = ($imageSourceWidth - ($left_crop + $right_crop)) * $ratio; $imageSourceNHeight = ($imageSourceHeight - ($top_crop + $bottom_crop)) * $ratio; // calculate ratio for second scaling if($img_w > $img_h){ if($imageSourceNHeight > $img_h){ $ratio2 = $img_h / $imageSourceNHeight; $imageSourceNHeight *= $ratio2; $imageSourceNWidth *= $ratio2; } } else { if($imageSourceNWidth > $img_w){ $ratio2 = $img_w / $imageSourceNWidth; $imageSourceNHeight *= $ratio2; $imageSourceNWidth *= $ratio2; } } $img_w = $imageSourceNWidth; $img_h = $imageSourceNHeight; } $imageBG = imagecreatetruecolor($img_w, $img_h); // enable transparent background if($config['img_bg'] == 'transparent'){ // create transparent color $rgb = imagecolorallocatealpha($imageBG, 0, 0, 0, 127); } else {// create normal color $bg = $config['img_bg']; // translate hex to RGB $hex_color = strtolower(trim($bg,'#;&Hh')); $bg = array_map('hexdec',explode('.',wordwrap($hex_color, ceil(strlen($hex_color)/3),'.',1))); // creating color $rgb = imagecolorallocate($imageBG, $bg[0], $bg[1], $bg[2]); } // filling the canvas imagefill($imageBG, 0, 0, $rgb); // enabling transparent settings for better quality imagealphablending($imageBG, false); imagesavealpha($imageBG, true); } // when stretching is disabled if(!$config['img_stretch']){ if($config['img_keep_aspect_ratio']) { $base_x = 0; $base_y = 0; $imageSourceNWidth = $img_w; $imageSourceNHeight = $img_h; } else { // if image auto-scale is enabled if($config['img_auto_scale'] && !$config['img_keep_aspect_ratio']) { $img_ratio = $imageSourceWidth / $imageSourceHeight; $thumb_ratio = $img_w / $img_h; // base variables $imageSourceNWidth = $img_w; $imageSourceNHeight = $img_h; $base_x = 0; $base_y = 0; // if img_ratio == thumb_ratio - no scale and cuts $left_crop = 0; $top_crop = 0; // two other cases if($img_ratio > $thumb_ratio) { // when source is wider than destination $ratio_h = $imageSourceHeight / $img_h; $new_w = $img_w * $ratio_h; $left_crop = floor(($imageSourceWidth - $new_w) / 2); // top_crop still 0 } else if($img_ratio < $thumb_ratio) { // when source is higher than destination $ratio_w = $imageSourceWidth / $img_w; $new_h = $img_h * $ratio_w; $top_crop = floor(($imageSourceHeight - $new_h) / 2); // left_crop still } // equal two other crop params $right_crop = $left_crop; $bottom_crop = $top_crop; } else { // if not - left unused areas of the image // calculate ratio for first scaling $ratio = (($imageSourceWidth - ($left_crop + $right_crop)) > ($imageSourceHeight - ($top_crop + $bottom_crop))) ? $img_w/($imageSourceWidth - ($left_crop + $right_crop)) : $img_h/($imageSourceHeight - ($top_crop + $bottom_crop)); // calculate new image size $imageSourceNWidth = ($imageSourceWidth - ($left_crop + $right_crop)) * $ratio; $imageSourceNHeight = ($imageSourceHeight - ($top_crop + $bottom_crop)) * $ratio; // calculate ratio for second scaling if($img_w > $img_h){ if($imageSourceNHeight > $img_h){ $ratio2 = $img_h / $imageSourceNHeight; $imageSourceNHeight *= $ratio2; $imageSourceNWidth *= $ratio2; } }else{ if($imageSourceNWidth > $img_w){ $ratio2 = $img_w / $imageSourceNWidth; $imageSourceNHeight *= $ratio2; $imageSourceNWidth *= $ratio2; } } // setting position of putting thumbnail on canvas $base_x = floor(($img_w - $imageSourceNWidth) / 2); $base_y = floor(($img_h - $imageSourceNHeight) / 2); } } } else { // when stretching is enable $imageSourceNWidth = $img_w; $imageSourceNHeight = $img_h; $base_x = 0; $base_y = 0; } // copy image imagecopyresampled( $imageBG, $imageSource, $base_x, $base_y, $left_crop, $top_crop, $imageSourceNWidth, $imageSourceNHeight, $imageSourceWidth - ($left_crop + $right_crop), $imageSourceHeight - ($top_crop + $bottom_crop) ); // // applying filters // // grayscale if($config['grayscale_filter'] || $config['sepia_filter']) { imagefilter($imageBG, IMG_FILTER_GRAYSCALE); } // sepia if($config['sepia_filter']) { imagefilter($imageBG, IMG_FILTER_COLORIZE, 90, 60, 40); } // blur if($config['blur_filter']) { imagefilter($imageBG, IMG_FILTER_GAUSSIAN_BLUR, $config['filter_arg']); } // brightness if($config['brightness_filter']) { imagefilter($imageBG, IMG_FILTER_BRIGHTNESS, $config['filter_arg']); } // smooth if($config['smooth_filter']) { imagefilter($imageBG, IMG_FILTER_SMOOTH, $config['filter_arg']); } // pixelate if($config['pixelate_filter']) { imagefilter($imageBG, IMG_FILTER_PIXELATE, $config['filter_arg'], true); } // contrast if($config['contrast_filter']) { imagefilter($imageBG, IMG_FILTER_CONTRAST, $config['filter_arg']); } // save image depends from MIME type if($imageData['mime'] == 'image/jpeg' || $imageData['mime'] == 'image/pjpeg' || $imageData['mime'] == 'image/jpg') imagejpeg($imageBG,$cache_dir.$filename, $config['img_quality']); elseif($imageData['mime'] == 'image/gif') imagegif($imageBG, $cache_dir.$filename); else imagepng($imageBG, $cache_dir.$filename); // result return array(TRUE, $filename); } else { return FALSE; } } } } } // EOF
