/**
* Generate a layout thumbnail according to the configuration.
*
* @access public
*
* @param Layout $layout The layout to treate
* @param BBApplication $app The current instance of BBApplication
*
* @return mixed FALSE if something wrong, the ressource path of the thumbnail elsewhere
*/
public function generateThumbnail(Layout $layout, BBApplication $app)
{
// Is the layout valid ?
if (!$layout->isValid()) {
return false;
}
// Is some layout configuration existing ?
if (null === $app->getConfig()->getSection('layout')) {
return false;
}
$layoutconfig = $app->getConfig()->getSection('layout');
// Is some thumbnail configuration existing ?
if (!isset($layoutconfig['thumbnail'])) {
return false;
}
$thumbnailconfig = $layoutconfig['thumbnail'];
// Is gd available ?
if (!function_exists('gd_info')) {
return false;
}
$gd_info = gd_info();
// Is the selected format supported by gd ?
if (!isset($thumbnailconfig['format'])) {
return false;
}
if (true !== $gd_info[strtoupper($thumbnailconfig['format']) . ' Support']) {
return false;
}
// Is the template file existing ?
if (!isset($thumbnailconfig['template'])) {
return false;
}
$templatefile = $thumbnailconfig['template'];
$thumbnaildir = dirname($templatefile);
File::resolveFilepath($templatefile, null, array('include_path' => $app->getResourceDir()));
if (false === file_exists($templatefile) || false === is_readable($templatefile)) {
return false;
}
try {
$gd_function = 'imagecreatefrom' . strtolower($thumbnailconfig['format']);
$thumbnail = $gd_function($templatefile);
$thumbnailfile = $thumbnaildir . '/' . $layout->getUid() . '.' . strtolower($thumbnailconfig['format']);
// Is a background color existing ?
if (!isset($thumbnailconfig['background']) || !is_array($thumbnailconfig['background']) || 3 != count($thumbnailconfig['background'])) {
return false;
}
$background = imagecolorallocate($thumbnail, $thumbnailconfig['background'][0], $thumbnailconfig['background'][1], $thumbnailconfig['background'][2]);
// Is a clipping zone existing ?
if (!isset($thumbnailconfig['clip']) || !is_array($thumbnailconfig['clip']) || 4 != count($thumbnailconfig['clip'])) {
return false;
}
$gridcolumn = 12;
if (null !== ($lessconfig = $app->getConfig()->getSection('less'))) {
if (isset($lessconfig['gridcolumn'])) {
$gridcolumn = $lessconfig['gridcolumn'];
}
}
$domlayout = $layout->getDomDocument();
if (!$domlayout->hasChildNodes() || !$domlayout->firstChild->hasChildNodes()) {
$this->drawRect($thumbnail, $thumbnailconfig['clip'], $background);
} else {
$this->drawThumbnailZone($thumbnail, $domlayout->firstChild, $thumbnailconfig['clip'], $background, $gridcolumn);
}
imagesavealpha($thumbnail, true);
$thumbnaildir = dirname(File::normalizePath($app->getCurrentResourceDir() . '/' . $thumbnailfile));
if (false === is_dir($thumbnaildir)) {
mkdir($thumbnaildir, 0755, true);
}
imagepng($thumbnail, File::normalizePath($app->getCurrentResourceDir() . '/' . $thumbnailfile));
} catch (\Exception $e) {
return false;
}
$layout->setPicPath($thumbnailfile);
return $layout->getPicPath();
}