function createThumbnail($path, $config, $k2_mode = false, $vm_mode = false, $img_rel = '')
{
// 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_gk4' . DS . 'cache' . DS;
// checking the special images
$check_result = NSP_GK4_Thumbs::checkSpecialImages(NSP_GK4_Thumbs::translateName($path, $config['module_id'], $k2_mode, $vm_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_GK4_Thumbs::checkCache(NSP_GK4_Thumbs::translateName($path, $config['module_id'], $k2_mode, $vm_mode, '_noscale'), $config['cache_time'], $config['module_id'])) {
return TRUE;
} else {
// file path
$file = NSP_GK4_Thumbs::getRealPath($path, $k2_mode, $vm_mode, '_noscale');
// filename
$filename = NSP_GK4_Thumbs::translateName($path, $config['module_id'], $k2_mode, $vm_mode, '_noscale');
// Getting informations about image
if (is_file($file)) {
$imageData = getimagesize($file);
$img_w = str_replace('px', '', str_replace('%', '', $config['img_width']));
$img_h = str_replace('px', '', str_replace('%', '', $config['img_height']));
// loading image depends from type of image
if ($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 . $filename);
}
// result
return TRUE;
} else {
return FALSE;
}
}
} else {
// cropped or normal image
if (NSP_GK4_Thumbs::checkCache(NSP_GK4_Thumbs::translateName($path, $config['module_id'], $k2_mode, $vm_mode, $check_result == 1 ? '_cropped' : ''), $config['cache_time'], $config['module_id'])) {
return TRUE;
} else {
// file path
$file = NSP_GK4_Thumbs::getRealPath($path, $k2_mode, $vm_mode, $check_result == 1 ? '_cropped' : '');
// filename
$filename = NSP_GK4_Thumbs::translateName($path, $config['module_id'], $k2_mode, $vm_mode, $check_result == 1 ? '_cropped' : '');
// Getting informations about image
if (is_file($file)) {
$imageData = getimagesize($file);
$img_w = str_replace('px', '', str_replace('%', '', $config['img_width']));
$img_h = str_replace('px', '', str_replace('%', '', $config['img_height']));
// loading image depends from type of image
if ($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);
// 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'] || $config['img_keep_aspect_ratio']) {
if ($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']) {
$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 + $bottom_crop));
// save image depends from MIME type
if ($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 TRUE;
} else {
return FALSE;
}
}
}
}