public static function create_favicon($dir_name, $image, $sizes = false)
{
it_classes_load('it-image-utility.php');
return ITImageUtility::create_favicon($dir_name, $image, $sizes);
}
public static function resize_image($file, $max_w = 0, $max_h = 0, $crop = true, $suffix = null, $dest_path = null, $jpeg_quality = 90)
{
it_classes_load('it-file-utility.php');
if (is_numeric($file)) {
$file_info = ITFileUtility::get_file_attachment($file);
if (false === $file_info) {
return new WP_Error('error_loading_image_attachment', "Could not find requested file attachment ({$file})");
}
$file = $file_info['file'];
} else {
$file_attachment_id = '';
}
if (preg_match('/\\.ico$/', $file)) {
return array('file' => $file, 'url' => ITFileUtility::get_url_from_file($file), 'name' => basename($file));
}
if (version_compare($GLOBALS['wp_version'], '3.4.9', '>')) {
// Compat code taken from pre-release 3.5.0 code.
if (!file_exists($file)) {
return new WP_Error('error_loading_image', sprintf(__('File “%s” doesn’t exist?'), $file));
}
if (!function_exists('imagecreatefromstring')) {
return new WP_Error('error_loading_image', __('The GD image library is not installed.'));
}
// Set artificially high because GD uses uncompressed images in memory
@ini_set('memory_limit', apply_filters('image_memory_limit', WP_MAX_MEMORY_LIMIT));
$image = imagecreatefromstring(file_get_contents($file));
if (!is_resource($image)) {
return new WP_Error('error_loading_image', sprintf(__('File “%s” is not an image.'), $file));
}
} else {
require_once ABSPATH . 'wp-admin/includes/image.php';
$image = wp_load_image($file);
if (!is_resource($image)) {
return new WP_Error('error_loading_image', $image);
}
}
list($orig_w, $orig_h, $orig_type) = getimagesize($file);
$dims = ITImageUtility::_image_resize_dimensions($orig_w, $orig_h, $max_w, $max_h, $crop);
if (!$dims) {
return new WP_Error('error_resizing_image', "Could not resize image");
}
list($dst_x, $dst_y, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h) = $dims;
if ($orig_w == $dst_w && $orig_h == $dst_h) {
return array('file' => $file, 'url' => ITFileUtility::get_url_from_file($file), 'name' => basename($file));
}
if (!$suffix) {
$suffix = "resized-image-{$dst_w}x{$dst_h}";
}
$info = pathinfo($file);
$dir = $info['dirname'];
$ext = $info['extension'];
$name = basename($file, ".{$ext}");
if (!is_null($dest_path) && ($_dest_path = realpath($dest_path))) {
$dir = $_dest_path;
}
$destfilename = "{$dir}/{$name}-{$suffix}.{$ext}";
if (file_exists($destfilename)) {
if (filemtime($file) > filemtime($destfilename)) {
unlink($destfilename);
} else {
return array('file' => $destfilename, 'url' => ITFileUtility::get_url_from_file($destfilename), 'name' => basename($destfilename));
}
}
// ImageMagick cannot resize animated PNG files yet, so this only works for
// animated GIF files.
$animated = false;
if (ITImageUtility::is_animated_gif($file)) {
$coalescefilename = "{$dir}/{$name}-coalesced-file.{$ext}";
if (!file_exists($coalescefilename)) {
system("convert {$file} -coalesce {$coalescefilename}");
}
if (file_exists($coalescefilename)) {
system("convert -crop {$src_w}x{$src_h}+{$src_x}+{$src_y}! {$coalescefilename} {$destfilename}");
if (file_exists($destfilename)) {
system("mogrify -resize {$dst_w}x{$dst_h} {$destfilename}");
system("convert -layers optimize {$destfilename}");
$animated = true;
}
}
}
if (!$animated) {
$newimage = imagecreatetruecolor($dst_w, $dst_h);
// preserve PNG transparency
if (IMAGETYPE_PNG == $orig_type && function_exists('imagealphablending') && function_exists('imagesavealpha')) {
imagealphablending($newimage, false);
imagesavealpha($newimage, true);
}
imagecopyresampled($newimage, $image, $dst_x, $dst_y, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h);
// we don't need the original in memory anymore
if ($orig_type == IMAGETYPE_GIF) {
if (!imagegif($newimage, $destfilename)) {
return new WP_Error('resize_path_invalid', __('Resize path invalid'));
}
} elseif ($orig_type == IMAGETYPE_PNG) {
if (!imagepng($newimage, $destfilename)) {
return new WP_Error('resize_path_invalid', __('Resize path invalid'));
}
} else {
// all other formats are converted to jpg
$destfilename = "{$dir}/{$name}-{$suffix}.jpg";
if (!imagejpeg($newimage, $destfilename, apply_filters('jpeg_quality', $jpeg_quality))) {
return new WP_Error('resize_path_invalid', __('Resize path invalid'));
}
}
imagedestroy($newimage);
}
imagedestroy($image);
// Set correct file permissions
$stat = stat(dirname($destfilename));
$perms = $stat['mode'] & 0666;
//same permissions as parent folder, strip off the executable bits
@chmod($destfilename, $perms);
return array('file' => $destfilename, 'url' => ITFileUtility::get_url_from_file($destfilename), 'name' => basename($destfilename));
}