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41 changes: 41 additions & 0 deletions
41
Modules/File/classes/ObjectProperties/FirstPageToTileImageFlavourDefintion.php
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,41 @@ | ||
| <?php | ||
|
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| /** | ||
| * This file is part of ILIAS, a powerful learning management system | ||
| * published by ILIAS open source e-Learning e.V. | ||
| * | ||
| * ILIAS is licensed with the GPL-3.0, | ||
| * see https://www.gnu.org/licenses/gpl-3.0.en.html | ||
| * You should have received a copy of said license along with the | ||
| * source code, too. | ||
| * | ||
| * If this is not the case or you just want to try ILIAS, you'll find | ||
| * us at: | ||
| * https://www.ilias.de | ||
| * https://github.com/ILIAS-eLearning | ||
| * | ||
| *********************************************************************/ | ||
|
|
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| declare(strict_types=1); | ||
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| use ILIAS\Object\Properties\CoreProperties\TileImage\ilObjectTileImageFlavourDefinition; | ||
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| class FirstPageToTileImageFlavourDefinition extends ilObjectTileImageFlavourDefinition | ||
| { | ||
| private const ID = 'b9b2f16325492412304989a9b3e32479e612957582f60ed667af31e7b36e50ed'; | ||
|
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| public function getId(): string | ||
| { | ||
| return self::ID; | ||
| } | ||
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| public function getFlavourMachineId(): string | ||
| { | ||
| return FirstPageToTileImageMachine::ID; | ||
| } | ||
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| public function getInternalName(): string | ||
| { | ||
| return 'first_page_tile_image'; | ||
| } | ||
| } |
125 changes: 125 additions & 0 deletions
125
Modules/File/classes/ObjectProperties/FirstPageToTileImageFlavourMachine.php
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,125 @@ | ||
| <?php | ||
|
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| /** | ||
| * This file is part of ILIAS, a powerful learning management system | ||
| * published by ILIAS open source e-Learning e.V. | ||
| * | ||
| * ILIAS is licensed with the GPL-3.0, | ||
| * see https://www.gnu.org/licenses/gpl-3.0.en.html | ||
| * You should have received a copy of said license along with the | ||
| * source code, too. | ||
| * | ||
| * If this is not the case or you just want to try ILIAS, you'll find | ||
| * us at: | ||
| * https://www.ilias.de | ||
| * https://github.com/ILIAS-eLearning | ||
| * | ||
| *********************************************************************/ | ||
|
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| declare(strict_types=1); | ||
|
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| use ILIAS\Object\Properties\CoreProperties\TileImage\ilObjectTileImageFlavourDefinition; | ||
| use ILIAS\Filesystem\Stream\FileStream; | ||
| use ILIAS\ResourceStorage\Flavour\Machine\DefaultMachines\CropRectangle; | ||
| use ILIAS\ResourceStorage\Flavour\Machine\DefaultMachines\ExtractPages; | ||
| use ILIAS\ResourceStorage\Flavour\Definition\FlavourDefinition; | ||
| use ILIAS\ResourceStorage\Flavour\Definition\CropToRectangle; | ||
| use ILIAS\ResourceStorage\Flavour\Definition\PagesToExtract; | ||
| use ILIAS\ResourceStorage\Flavour\Machine\FlavourMachine; | ||
| use ILIAS\ResourceStorage\Flavour\Machine\DefaultMachines\AbstractMachine; | ||
| use ILIAS\ResourceStorage\Flavour\Machine\Result; | ||
| use ILIAS\ResourceStorage\Information\FileInformation; | ||
| use ILIAS\ResourceStorage\Flavour\Engine\ImagickEngine; | ||
|
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| /** | ||
| * @author Thibeau Fuhrer <[email protected]> | ||
| * @noinspection AutoloadingIssuesInspection | ||
| */ | ||
| class FirstPageToTileImageMachine extends AbstractMachine implements FlavourMachine | ||
| { | ||
| public const ID = "be03e07e396a61f7d9b31a712f0913fe9c6cd43b009ce69d30aa0f10bd3500bd"; | ||
| private const FULL_QUALITY_SIZE_THRESHOLD = 100; | ||
| private ExtractPages $extract_pages; | ||
| private CropRectangle $crop; | ||
| private ?ilObjectTileImageFlavourDefinition $definition = null; | ||
| private ?FileInformation $information = null; | ||
|
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| public function __construct() | ||
| { | ||
| $this->extract_pages = new ExtractPages(); | ||
| $this->crop = new CropRectangle(); | ||
| } | ||
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| public function getId(): string | ||
| { | ||
| return self::ID; | ||
| } | ||
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| public function canHandleDefinition(FlavourDefinition $definition): bool | ||
| { | ||
| return $definition instanceof ilObjectTileImageFlavourDefinition; | ||
| } | ||
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| public function dependsOnEngine(): ?string | ||
| { | ||
| return ImagickEngine::class; | ||
| } | ||
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| public function processStream( | ||
| FileInformation $information, | ||
| FileStream $stream, | ||
| FlavourDefinition $for_definition | ||
| ): \Generator { | ||
| $this->definition = $for_definition; | ||
| $this->information = $information; | ||
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| $page_stream = $this->extract_pages->processStream( | ||
| $this->information, | ||
| $stream, | ||
| new PagesToExtract( | ||
| false, | ||
| $this->definition->getWidths()['xl'], | ||
| 1, | ||
| false, | ||
| 100 | ||
| ) | ||
| )->current()?->getStream(); | ||
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| if ($page_stream === null) { | ||
| return; | ||
| } | ||
|
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| $i = 0; | ||
| foreach ($for_definition->getWidths() as $width) { | ||
| yield new Result( | ||
| $for_definition, | ||
| $this->cropImage($page_stream, $width), | ||
| $i, | ||
| true | ||
| ); | ||
| $i++; | ||
| } | ||
| } | ||
|
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| protected function cropImage( | ||
| FileStream $stream, | ||
| int $width | ||
| ) { | ||
| $quality = $width <= self::FULL_QUALITY_SIZE_THRESHOLD | ||
| ? 100 // we take 100% jpeg quality for small resultions | ||
| : $this->definition->getQuality(); | ||
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| return $this->crop->processStream( | ||
| $this->information, | ||
| $stream, | ||
| new CropToRectangle( | ||
| false, | ||
| $width, | ||
| $this->definition->getRatio(), | ||
| $quality | ||
| ) | ||
| )->current()->getStream(); | ||
| } | ||
| } |
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