function process_form()
{
$button = required_param('button', PARAM_TEXT);
switch ($button) {
case $this->buttonresize:
$size = required_param('size', PARAM_INT);
list($width, $height) = explode('x', $this->resizeoptions[$size]);
break;
case $this->buttonscale:
$scale = required_param('scale', PARAM_INT);
$imagesize = getimagesize($this->imagepath);
$width = $imagesize[0] * ($scale / 100);
$height = $imagesize[1] * ($scale / 100);
break;
}
$info = lightboxgallery_image_info($this->imagepath);
if ($im = lightboxgallery_imagecreatefromtype($info->imagesize[2], $this->imagepath)) {
$resized = lightboxgallery_resize_image($im, $info, $width, $height);
$this->save_image_resource($resized, $info->imagesize[2]);
}
}
function lightboxgallery_image_thumbnail($courseid, $gallery, $file, $offsetx = 0, $offsety = 0)
{
global $CFG;
// If anything fails when retrieving the thumbnail, we'll fallback to just printing a label
$fallback = '[' . $file . ']';
$oldpath = $CFG->dataroot . '/' . $courseid . '/' . $gallery->folder . '/' . $file;
$newpath = $courseid . '/' . $gallery->folder . '/_thumb/' . $file . '.jpg';
if (empty($CFG->gdversion)) {
return $fallback;
}
umask(00);
if (file_exists($CFG->dataroot . '/' . $newpath)) {
return lightboxgallery_make_img(lightboxgallery_get_image_url($gallery->id, $file, true));
} else {
$thumbdir = $CFG->dataroot . '/' . dirname($newpath);
if (!file_exists($thumbdir) && !mkdir($thumbdir, $CFG->directorypermissions)) {
return $fallback;
}
}
$info = lightboxgallery_image_info($oldpath);
if (!($im = lightboxgallery_imagecreatefromtype($info->imagesize[2], $oldpath))) {
return $fallback;
}
$thumb = lightboxgallery_resize_image($im, $info, THUMB_WIDTH, THUMB_HEIGHT, $offsetx, $offsety);
if (function_exists('ImageJpeg')) {
@touch($CFG->dataroot . '/' . $newpath);
if (ImageJpeg($thumb, $CFG->dataroot . '/' . $newpath, 90)) {
@chmod($CFG->dataroot . '/' . $newpath, 0666);
return lightboxgallery_make_img(lightboxgallery_get_image_url($gallery->id, $file, true));
}
} else {
return $fallback;
}
}
}
$resizeoption = 0;
if (in_array($gallery->autoresize, array(AUTO_RESIZE_UPLOAD, AUTO_RESIZE_BOTH))) {
$resizeoption = $gallery->resize;
} else {
if (isset($formdata->resize)) {
$resizeoption = $formdata->resize;
}
}
if ($resizeoption > 0) {
$resizeoptions = lightboxgallery_resize_options();
$fullpath = $CFG->dataroot . '/' . $uploaddir . '/' . $filename;
$info = lightboxgallery_image_info($fullpath);
if ($im = lightboxgallery_imagecreatefromtype($info->imagesize[2], $fullpath)) {
list($width, $height) = explode('x', $resizeoptions[$resizeoption]);
if ($resized = lightboxgallery_resize_image($im, $info, $width, $height)) {
switch ($info->imagesize[2]) {
case 1:
$function = 'ImageGIF';
break;
case 2:
$function = 'ImageJPEG';
break;
case 3:
$function = 'ImagePNG';
break;
}
if (function_exists($function)) {
$function($resized, $fullpath, $info->imagesize[2] == 3 ? 9 : 100);
}
}