/**
* @return RokGallery_FileCreQueue
*/
public function &getInstance()
{
if (!isset(self::$_instance)) {
self::$_instance = new RokGallery_Queue_FileCreate();
}
return self::$_instance;
}
/**
* @param Doctrine_Event $event
*/
public function postTransactionRollback(Doctrine_Event $event)
{
RokGallery_Queue_FileDelete::clear();
RokGallery_Queue_DirectoryDelete::clear();
RokGallery_Queue_FileCreate::process();
RokGallery_Queue_DirectoryCreate::process();
}
/**
* Generates a thumbnail image for a slice
*
* @param $thumb_x
* @param $thumb_y
* @param bool $keep_aspect
* @param null $background_color
* @param string $extension
*
*/
public function generateThumbnail($thumb_x, $thumb_y, $keep_aspect = true, $background_color = null, $extension = "thumb")
{
$slices_dir = dirname($this->File->getFullPath());
$thumb_path = $this->getThumbFullPath($extension);
// get the slice image
RokGallery_Memory::adjustLimitForImage($this->xsize, $this->ysize);
$slice_image = WideImage::loadFromFile($this->getFullPath());
if ($background_color == 'transparent' || empty($background_color)) {
$background_color = null;
}
// if he image size is smaller then the thumbnail size
// resize the canvas with optioned color and place in center
if ($this->xsize < $thumb_x && $this->ysize < $thumb_y) {
// Resize canvas
RokGallery_Memory::adjustLimitForImage($thumb_x, $thumb_y);
$thumb_image = $slice_image->resizeCanvas($thumb_x, $thumb_y, 'center', 'center', $background_color == null ? $background_color : $slice_image->allocateColor(RokGallery_Helper::html2rgb($background_color)));
$slice_image->destroy();
unset($slice_image);
// write out image
$thumb_image->saveToFile($thumb_path, RokGallery_Helper::getImageQuality($this->File->type));
RokGallery_Queue_FileCreate::add($thumb_path);
$thumb_image->destroy();
unset($thumb_image);
} else {
if ($keep_aspect) {
// Keep the aspect Ratio
RokGallery_Memory::adjustLimitForImage($thumb_x, $thumb_y);
$thumb_image_after_resize = $slice_image->resize($thumb_x, $thumb_y);
$slice_image->destroy();
unset($slice_image);
// fill in blank space
RokGallery_Memory::adjustLimitForImage($thumb_x, $thumb_y);
$thumb_image = $thumb_image_after_resize->resizeCanvas($thumb_x, $thumb_y, 'center', 'center', $background_color == null ? $background_color : $thumb_image_after_resize->allocateColor(RokGallery_Helper::html2rgb($background_color)));
$thumb_image_after_resize->destroy();
unset($thumb_image_after_resize);
// write out image
$thumb_image->saveToFile($thumb_path, RokGallery_Helper::getImageQuality($this->File->type));
RokGallery_Queue_FileCreate::add($thumb_path);
$thumb_image->destroy();
unset($thumb_image);
} else {
// Create thumbnail but dont make thumbnail keep the aspect ratio
$source_aspect_ratio = $this->xsize / $this->ysize;
$desired_aspect_ratio = $thumb_x / $thumb_y;
$temp_width = $thumb_x;
$temp_height = $thumb_y;
$temp_left = 0;
$temp_top = 0;
if ($source_aspect_ratio > $desired_aspect_ratio) {
$temp_height = $thumb_y;
$temp_width = (int) round($thumb_y * $source_aspect_ratio);
$temp_left = (int) round(($temp_width - $thumb_x) / 2);
$temp_top = 0;
} elseif ($source_aspect_ratio < $desired_aspect_ratio) {
$temp_width = $thumb_x;
$temp_height = (int) round($thumb_x / $source_aspect_ratio);
$temp_left = 0;
$temp_top = (int) round(($temp_height - $thumb_y) / 2);
}
RokGallery_Memory::adjustLimitForImage($temp_width, $temp_height);
$thumb_image_after_resize = $slice_image->resize($temp_width, $temp_height);
$slice_image->destroy();
unset($slice_image);
RokGallery_Memory::adjustLimitForImage($thumb_x, $thumb_y);
$thumb_image = $thumb_image_after_resize->crop($temp_left, $temp_top, $thumb_x, $thumb_y);
$thumb_image_after_resize->destroy();
unset($thumb_image_after_resize);
// write out image
$thumb_image->saveToFile($thumb_path, RokGallery_Helper::getImageQuality($this->File->type));
RokGallery_Queue_FileCreate::add($thumb_path);
$thumb_image->destroy();
unset($thumb_image);
}
}
}
