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| 1 | <?php |
| 2 | /** |
| 3 | * This file is part of PHPPresentation - A pure PHP library for reading and writing |
| 4 | * presentations documents. |
| 5 | * |
| 6 | * PHPPresentation is free software distributed under the terms of the GNU Lesser |
| 7 | * General Public License version 3 as published by the Free Software Foundation. |
| 8 | * |
| 9 | * For the full copyright and license information, please read the LICENSE |
| 10 | * file that was distributed with this source code. For the full list of |
| 11 | * contributors, visit https://github.com/PHPOffice/PHPPresentation/contributors. |
| 12 | * |
| 13 | * @see https://github.com/PHPOffice/PHPPresentation |
| 14 | * |
| 15 | * @license http://www.gnu.org/licenses/lgpl.txt LGPL version 3 |
| 16 | */ |
| 17 | |
| 18 | declare(strict_types=1); |
| 19 | |
| 20 | namespace PhpOffice\PhpPresentation\Writer\ODPresentation; |
| 21 | |
| 22 | use PhpOffice\Common\Adapter\Zip\ZipInterface; |
| 23 | |
| 24 | class ThumbnailsThumbnail extends AbstractDecoratorWriter |
| 25 | { |
| 26 | public function render(): ZipInterface |
| 27 | { |
| 28 | $pathThumbnail = $this->getPresentation()->getPresentationProperties()->getThumbnailPath(); |
| 29 | if ($pathThumbnail) { |
| 30 | // Size : 128x128 pixel |
| 31 | // PNG : 8bit, non-interlaced with full alpha transparency |
| 32 | $gdImage = imagecreatefromstring(file_get_contents($pathThumbnail)); |
| 33 | if ($gdImage) { |
| 34 | [$width, $height] = getimagesize($pathThumbnail); |
| 35 | |
| 36 | $gdRender = imagecreatetruecolor(128, 128); |
| 37 | $colorBgAlpha = imagecolorallocatealpha($gdRender, 0, 0, 0, 127); |
| 38 | imagecolortransparent($gdRender, $colorBgAlpha); |
| 39 | imagefill($gdRender, 0, 0, $colorBgAlpha); |
| 40 | imagecopyresampled($gdRender, $gdImage, 0, 0, 0, 0, 128, 128, $width, $height); |
| 41 | imagetruecolortopalette($gdRender, false, 255); |
| 42 | imagesavealpha($gdRender, true); |
| 43 | |
| 44 | ob_start(); |
| 45 | imagepng($gdRender); |
| 46 | $imageContents = ob_get_contents(); |
| 47 | ob_end_clean(); |
| 48 | |
| 49 | imagedestroy($gdRender); |
| 50 | imagedestroy($gdImage); |
| 51 | |
| 52 | $this->getZip()->addFromString('Thumbnails/thumbnail.png', $imageContents); |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | return $this->getZip(); |
| 57 | } |
| 58 | } |