public function testCreationFromCached()
{
$sampleFile = '/' . $this->user . '/files/test.txt';
$this->rootView->file_put_contents($sampleFile, 'dummy file data');
// create base preview
$x = 150;
$y = 150;
$preview = new \OC\Preview($this->user, 'files/', 'test.txt', $x, $y);
$preview->getPreview();
$fileInfo = $this->rootView->getFileInfo($sampleFile);
$fileId = $fileInfo['fileid'];
$thumbCacheFile = '/' . $this->user . '/' . \OC\Preview::THUMBNAILS_FOLDER . '/' . $fileId . '/' . $x . '-' . $y . '.png';
$this->assertEquals($this->rootView->file_exists($thumbCacheFile), true);
// create smaller previews
$preview = new \OC\Preview($this->user, 'files/', 'test.txt', 50, 50);
$isCached = $preview->isCached($fileId);
$this->assertEquals($this->user . '/' . \OC\Preview::THUMBNAILS_FOLDER . '/' . $fileId . '/150-150.png', $isCached);
}
/**
* return a preview of a file
*
* @param string $file The path to the file where you want a thumbnail from
* @param int $maxX The maximum X size of the thumbnail. It can be smaller depending on the shape of the image
* @param int $maxY The maximum Y size of the thumbnail. It can be smaller depending on the shape of the image
* @param boolean $scaleUp Scale smaller images up to the thumbnail size or not. Might look ugly
* @return \OCP\IImage
*/
public function createPreview($file, $maxX = 100, $maxY = 75, $scaleUp = false)
{
$preview = new \OC\Preview('', '/', $file, $maxX, $maxY, $scaleUp);
return $preview->getPreview();
}
$root = \OC\Files\Filesystem::getPath($linkItem['file_source']) . '/';
$images = array_map(function ($image) use($root) {
return $root . $image;
}, $images);
} else {
$root = '';
OCP\JSON::checkLoggedIn();
$user = OCP\User::getUser();
}
session_write_close();
$eventSource = new OC_EventSource();
foreach ($images as $image) {
$height = 200 * $scale;
if ($square) {
$width = 200 * $scale;
} else {
$width = 400 * $scale;
}
$userView = new \OC\Files\View('/' . $user);
$preview = new \OC\Preview($user, 'files', '/' . $image, $width, $height);
$preview->setKeepAspect(!$square);
$fileInfo = $userView->getFileInfo('/files/' . $image);
// if the thumbnails is already cached, get it directly from the filesystem to avoid decoding and re-encoding the image
$imageName = substr($image, strlen($root));
if ($path = $preview->isCached($fileInfo->getId())) {
$eventSource->send('preview', array('image' => $imageName, 'preview' => base64_encode($userView->file_get_contents('/' . $path))));
} else {
$eventSource->send('preview', array('image' => $imageName, 'preview' => (string) $preview->getPreview()));
}
}
$eventSource->close();
public function testKeepAspectRatioCover()
{
$originalWidth = 1680;
$originalHeight = 1050;
$originalAspectRation = $originalWidth / $originalHeight;
$preview = new \OC\Preview(self::TEST_PREVIEW_USER1, 'files/', 'testimage.jpg', 150, 150);
$preview->setKeepAspect(true);
$preview->setMode(\OC\Preview::MODE_COVER);
$image = $preview->getPreview();
$aspectRatio = $image->width() / $image->height();
$this->assertEquals(round($originalAspectRation, 2), round($aspectRatio, 2));
$this->assertGreaterThanOrEqual(150, $image->width());
$this->assertGreaterThanOrEqual(150, $image->height());
}
/**
* Tests if unsupported previews return an empty object
*/
public function testUnsupportedPreviewsReturnEmptyObject()
{
$width = 400;
$height = 200;
// Previews for odt files are not enabled
$imgData = file_get_contents(\OC::$SERVERROOT . '/tests/data/testimage.odt');
$imgPath = '/' . self::TEST_PREVIEW_USER1 . '/files/testimage.odt';
$this->rootView->file_put_contents($imgPath, $imgData);
$preview = new \OC\Preview(self::TEST_PREVIEW_USER1, 'files/', 'testimage.odt', $width, $height);
$preview->getPreview();
$image = $preview->getPreview();
$this->assertSame(false, $image->valid());
}
public function testIsCached()
{
$sourceFile = __DIR__ . '/../data/testimage.png';
$userId = $this->getUniqueID();
$this->createUser($userId, 'pass');
$storage = new Temporary();
$storage->mkdir('files');
$this->registerMount($userId, $storage, '/' . $userId);
\OC_Util::tearDownFS();
\OC_Util::setupFS($userId);
$preview = new \OC\Preview($userId, 'files');
$view = new View('/' . $userId . '/files');
$view->file_put_contents('test.png', file_get_contents($sourceFile));
$info = $view->getFileInfo('test.png');
$preview->setFile('test.png', $info);
$preview->setMaxX(64);
$preview->setMaxY(64);
$this->assertFalse($preview->isCached($info->getId()));
$preview->getPreview();
$this->assertEquals('thumbnails/' . $info->getId() . '/64-64.png', $preview->isCached($info->getId()));
}
/**
* @dataProvider txtBlacklist
*
* @param $extension
* @param $data
* @param $expectedResult
*/
public function testIsTransparent($extension, $data, $expectedResult)
{
$x = 32;
$y = 32;
$sample = '/' . self::TEST_PREVIEW_USER1 . '/files/test.' . $extension;
$this->rootView->file_put_contents($sample, $data);
$preview = new \OC\Preview(self::TEST_PREVIEW_USER1, 'files/', 'test.' . $extension, $x, $y);
$image = $preview->getPreview();
$resource = $image->resource();
//http://stackoverflow.com/questions/5702953/imagecolorat-and-transparency
$colorIndex = imagecolorat($resource, 1, 1);
$colorInfo = imagecolorsforindex($resource, $colorIndex);
$this->assertSame($expectedResult, $colorInfo['alpha'] === 127, 'Failed asserting that only previews for text files are transparent.');
}
