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Diffstat (limited to 'apps/theming/lib/IconBuilder.php')
| -rw-r--r-- | apps/theming/lib/IconBuilder.php | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/apps/theming/lib/IconBuilder.php b/apps/theming/lib/IconBuilder.php new file mode 100644 index 00000000000..b61e12d9236 --- /dev/null +++ b/apps/theming/lib/IconBuilder.php @@ -0,0 +1,140 @@ +<?php +/** + * @copyright Copyright (c) 2016 Julius Härtl <jus@bitgrid.net> + * + * @author Julius Härtl <jus@bitgrid.net> + * + * @license GNU AGPL version 3 or any later version + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as + * published by the Free Software Foundation, either version 3 of the + * License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + */ + +namespace OCA\Theming; + +use Imagick; +use ImagickPixel; + +class IconBuilder { + /** @var ThemingDefaults */ + private $themingDefaults; + /** @var Util */ + private $util; + + /** + * IconBuilder constructor. + * + * @param ThemingDefaults $themingDefaults + * @param Util $util + */ + public function __construct( + ThemingDefaults $themingDefaults, + Util $util + ) { + $this->themingDefaults = $themingDefaults; + $this->util = $util; + } + + /** + * @param $app app name + * @return string image blob + */ + public function getFavicon($app) { + $icon = $this->renderAppIcon($app); + $icon->resizeImage(32, 32, Imagick::FILTER_LANCZOS, 1); + $icon->setImageFormat("png24"); + $data = $icon->getImageBlob(); + $icon->destroy(); + return $data; + } + + /** + * @param $app app name + * @return string image blob + */ + public function getTouchIcon($app) { + $icon = $this->renderAppIcon($app); + $icon->setImageFormat("png24"); + $data = $icon->getImageBlob(); + $icon->destroy(); + return $data; + } + + /** + * Render app icon on themed background color + * fallback to logo + * + * @param $app app name + * @return Imagick + */ + public function renderAppIcon($app) { + $appIcon = $this->util->getAppIcon($app); + + $color = $this->themingDefaults->getMailHeaderColor(); + $mime = mime_content_type($appIcon); + // generate background image with rounded corners + $background = '<?xml version="1.0" encoding="UTF-8"?>' . + '<svg xmlns="http://www.w3.org/2000/svg" version="1.1" xmlns:cc="http://creativecommons.org/ns#" width="512" height="512" xmlns:xlink="http://www.w3.org/1999/xlink">' . + '<rect x="0" y="0" rx="75" ry="75" width="512" height="512" style="fill:' . $color . ';" />' . + '</svg>'; + + // resize svg magic as this seems broken in Imagemagick + if($mime === "image/svg+xml") { + $svg = file_get_contents($appIcon); + + $tmp = new Imagick(); + $tmp->readImageBlob($svg); + $x = $tmp->getImageWidth(); + $y = $tmp->getImageHeight(); + $res = $tmp->getImageResolution(); + $tmp->destroy(); + + // convert svg to resized image + $appIconFile = new Imagick(); + $resX = (int)(512 * $res['x'] / $x * 2.53); + $resY = (int)(512 * $res['y'] / $y * 2.53); + $appIconFile->setResolution($resX, $resY); + $appIconFile->setBackgroundColor(new ImagickPixel('transparent')); + $appIconFile->readImageBlob($svg); + } else { + $appIconFile = new Imagick(); + $appIconFile->setBackgroundColor(new ImagickPixel('transparent')); + $appIconFile->readImageBlob(file_get_contents($appIcon)); + $appIconFile->scaleImage(512, 512, true); + } + + // offset for icon positioning + $border_w = (int)($appIconFile->getImageWidth() * 0.05); + $border_h = (int)($appIconFile->getImageHeight() * 0.05); + $innerWidth = (int)($appIconFile->getImageWidth() - $border_w * 2); + $innerHeight = (int)($appIconFile->getImageHeight() - $border_h * 2); + $appIconFile->adaptiveResizeImage($innerWidth, $innerHeight); + // center icon + $offset_w = 512 / 2 - $innerWidth / 2; + $offset_h = 512 / 2 - $innerHeight / 2; + + $appIconFile->setImageFormat("png24"); + + $finalIconFile = new Imagick(); + $finalIconFile->readImageBlob($background); + $finalIconFile->setImageVirtualPixelMethod(Imagick::VIRTUALPIXELMETHOD_TRANSPARENT); + $finalIconFile->setImageArtifact('compose:args', "1,0,-0.5,0.5"); + $finalIconFile->compositeImage($appIconFile, Imagick::COMPOSITE_ATOP, $offset_w, $offset_h); + $finalIconFile->resizeImage(512, 512, Imagick::FILTER_LANCZOS, 1); + + $appIconFile->destroy(); + return $finalIconFile; + } + +}
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