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caff1023ea
To continue this formatting madness, here's a tiny patch that adds unified formatting for control structures like if and loops as well as classes, their methods and anonymous functions. This basically forces the constructs to start on the same line. This is not exactly what PSR2 wants, but I think we can have a few exceptions with "our" style. The starting of braces on the same line is pracrically standard for our code. This also removes and empty lines from method/function bodies at the beginning and end. Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>
119 lines
3.5 KiB
PHP
119 lines
3.5 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
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* @author Joas Schilling <coding@schilljs.com>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Olivier Paroz <github@oparoz.com>
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* @author Robin Appelman <robin@icewind.nl>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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*
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OC\Preview;
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use Imagick;
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use OCP\Files\File;
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use OCP\IImage;
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use OCP\ILogger;
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/**
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* Creates a PNG preview using ImageMagick via the PECL extension
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*
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* @package OC\Preview
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*/
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abstract class Bitmap extends ProviderV2 {
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/**
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* {@inheritDoc}
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*/
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public function getThumbnail(File $file, int $maxX, int $maxY): ?IImage {
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$tmpPath = $this->getLocalFile($file);
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// Creates \Imagick object from bitmap or vector file
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try {
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$bp = $this->getResizedPreview($tmpPath, $maxX, $maxY);
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} catch (\Exception $e) {
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\OC::$server->getLogger()->logException($e, [
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'message' => 'File: ' . $file->getPath() . ' Imagick says:',
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'level' => ILogger::ERROR,
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'app' => 'core',
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]);
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return null;
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}
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$this->cleanTmpFiles();
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//new bitmap image object
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$image = new \OC_Image();
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$image->loadFromData($bp);
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//check if image object is valid
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return $image->valid() ? $image : null;
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}
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/**
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* Returns a preview of maxX times maxY dimensions in PNG format
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*
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* * The default resolution is already 72dpi, no need to change it for a bitmap output
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* * It's possible to have proper colour conversion using profileimage().
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* ICC profiles are here: http://www.color.org/srgbprofiles.xalter
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* * It's possible to Gamma-correct an image via gammaImage()
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*
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* @param string $tmpPath the location of the file to convert
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* @param int $maxX
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* @param int $maxY
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*
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* @return \Imagick
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*/
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private function getResizedPreview($tmpPath, $maxX, $maxY) {
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$bp = new Imagick();
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// Layer 0 contains either the bitmap or a flat representation of all vector layers
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$bp->readImage($tmpPath . '[0]');
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$bp = $this->resize($bp, $maxX, $maxY);
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$bp->setImageFormat('png');
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return $bp;
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}
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/**
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* Returns a resized \Imagick object
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*
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* If you want to know more on the various methods available to resize an
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* image, check out this link : @link https://stackoverflow.com/questions/8517304/what-the-difference-of-sample-resample-scale-resize-adaptive-resize-thumbnail-im
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*
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* @param \Imagick $bp
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* @param int $maxX
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* @param int $maxY
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*
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* @return \Imagick
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*/
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private function resize($bp, $maxX, $maxY) {
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list($previewWidth, $previewHeight) = array_values($bp->getImageGeometry());
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// We only need to resize a preview which doesn't fit in the maximum dimensions
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if ($previewWidth > $maxX || $previewHeight > $maxY) {
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// TODO: LANCZOS is the default filter, CATROM could bring similar results faster
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$bp->resizeImage($maxX, $maxY, imagick::FILTER_LANCZOS, 1, true);
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}
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return $bp;
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}
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}
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