function lightboxgallery_resize_upload($filename, $dimensions)
{
list($width, $height) = explode('x', $dimensions);
$image = new lightboxgallery_edit_image($filename);
return $image->resize($width, $height);
}
function lightboxgallery_index_thumbnail($courseid, $gallery, $file = '')
{
global $CFG;
$gallerypath = $CFG->dataroot . '/' . $courseid . '/' . $gallery->folder;
$indexpath = $gallerypath . '/_thumb/index.png';
$webpath = $courseid . '/' . $gallery->folder . '/_thumb/index.png';
if (!file_exists($indexpath) || !empty($file)) {
if (empty($file)) {
if (!($images = lightboxgallery_directory_images($gallerypath))) {
return;
}
$file = $images[0];
}
$thumbpath = $gallerypath . '/_thumb/' . $file . '.jpg';
if (!file_exists($thumbpath)) {
$thumbparent = new lightboxgallery_edit_image($gallerypath . '/' . $file);
if (!$thumbparent->create_thumbnail()) {
return;
}
}
$base = new lightboxgallery_edit_image('index.png');
$thumb = new lightboxgallery_edit_image($thumbpath);
$transparent = imagecolorat($base->image, 0, 0);
$shrunk = imagerotate($thumb->resize(48, 48, 0, 0, true), 351, $transparent, 0);
imagecolortransparent($base->image, $transparent);
imagecopy($base->image, $shrunk, 2, 3, 0, 0, imagesx($shrunk), imagesy($shrunk));
if (!$base->save_image($base->image, $indexpath)) {
return;
}
}
return lightboxgallery_make_img_tag($CFG->wwwroot . '/file.php' . ($CFG->slasharguments ? '/' : '?file=/') . $webpath);
}
