/**
*
* @param File|AssetContainer $file
* @return string URL to thumbnail
*/
protected function getThumbnailURLForFile(AssetContainer $file)
{
if (!$file->exists()) {
return null;
}
// Attempt to generate image at given size
$width = $this->getPreviewMaxWidth();
$height = $this->getPreviewMaxHeight();
if ($file->hasMethod('ThumbnailURL')) {
return $file->ThumbnailURL($width, $height);
}
if ($file->hasMethod('Thumbnail')) {
return $file->Thumbnail($width, $height)->getURL();
}
if ($file->hasMethod('Fit')) {
return $file->Fit($width, $height)->getURL();
}
// Check if unsized icon is available
if ($file->hasMethod('getIcon')) {
return $file->getIcon();
}
return null;
}
public function loadFromContainer(AssetContainer $assetContainer)
{
// If we're working with image resampling, things could take a while. Bump up the time-limit
increase_time_limit_to(300);
$this->resetResource();
// Skip non-existant files
if (!$assetContainer->exists()) {
return;
}
// Skip if failed before
$filename = $assetContainer->getFilename();
$hash = $assetContainer->getHash();
$variant = $assetContainer->getVariant();
if ($this->failedResample($filename, $hash, $variant)) {
return;
}
// Mark as potentially failed prior to creation, resetting this on success
$content = $assetContainer->getString();
$image = imagecreatefromstring($content);
if ($image === false) {
$this->markFailed($filename, $hash, $variant);
return;
}
imagealphablending($image, false);
imagesavealpha($image, true);
// save alphablending setting (important)
$this->setImageResource($image);
}
