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<?php
/**
* @copyright Copyright (c) 2016 Julius Haertl <jus@bitgrid.net>
*
* @author Julius Haertl <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\Controller;
use OCA\Theming\Template;
use OCP\AppFramework\Controller;
use OCP\AppFramework\Http;
use OCP\AppFramework\Http\DataResponse;
use OCP\AppFramework\Http\DataDisplayResponse;
use OCP\AppFramework\Http\StreamResponse;
use OCP\AppFramework\Utility\ITimeFactory;
use OCP\Files\IRootFolder;
use OCP\IConfig;
use OCP\IL10N;
use OCP\IRequest;
use OCA\Theming\Util;
use OCP\IURLGenerator;
use Imagick;
use ImagickPixel;
class IconController extends Controller {
/** @var Template */
private $template;
/** @var Util */
private $util;
/** @var ITimeFactory */
private $timeFactory;
/** @var IL10N */
private $l;
/** @var IConfig */
private $config;
/** @var IRootFolder */
private $rootFolder;
/**
* IconController constructor.
*
* @param string $appName
* @param IRequest $request
* @param IConfig $config
* @param Template $template
* @param Util $util
* @param ITimeFactory $timeFactory
* @param IL10N $l
* @param IRootFolder $rootFolder
*/
public function __construct(
$appName,
IRequest $request,
IConfig $config,
Template $template,
Util $util,
ITimeFactory $timeFactory,
IL10N $l,
IRootFolder $rootFolder
) {
parent::__construct($appName, $request);
$this->template = $template;
$this->util = $util;
$this->timeFactory = $timeFactory;
$this->l = $l;
$this->config = $config;
$this->rootFolder = $rootFolder;
}
/**
* @PublicPage
* @NoCSRFRequired
*
* @param $app app name
* @param $image image file name
* @return StreamResponse|DataResponse
*/
public function getThemedIcon($app, $image) {
$image = $this->getAppImage($app, $image);
$svg = file_get_contents($image);
$color = $this->template->getMailHeaderColor();
$svg = $this->colorizeSvg($svg, $color);
return new DataDisplayResponse($svg, Http::STATUS_OK, ['Content-Type' => 'image/svg+xml']);
}
/**
* Return a 32x32 favicon as png
*
* @PublicPage
* @NoCSRFRequired
*
* @param $app app name
* @return StreamResponse|DataResponse
*/
public function getFavicon($app) {
// TODO: we need caching here
$icon = $this->renderAppIcon($app);
$icon->resizeImage(32, 32, Imagick::FILTER_LANCZOS, 1);
$icon->setImageFormat("png24");
$response = new DataDisplayResponse($icon, Http::STATUS_OK, ['Content-Type' => 'image/x-icon']);
$response->cacheFor(3600);
$response->addHeader('Expires', date(\DateTime::RFC2822, $this->timeFactory->getTime()));
return $response;
}
private function renderAppIcon($app) {
$appIcon = $this->getAppIcon($app);
$color = $this->config->getAppValue($this->appName, 'color');
if ($color === "") {
$color = '#0082c9';
}
$svg = file_get_contents($appIcon);
if ($this->util->invertTextColor($color)) {
$svg = $this->svgInvert($svg);
}
// 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>';
$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);
$appIconFile->setImageFormat("png24");
// offset for icon positioning
$offset_w = (int)($appIconFile->getImageWidth() * 0.05);
$offset_h = (int)($appIconFile->getImageHeight() * 0.05);
// center icon if it is not square
if ($x > $y) {
$offset_h += 512 / 2 - $appIconFile->getImageHeight() / 2;
}
if ($y > $x) {
$offset_h += 512 / 2 - $appIconFile->getImageHeight() / 2;
}
$innerWidth = (int)($appIconFile->getImageWidth() - $offset_w * 2);
$innerHeight = (int)($appIconFile->getImageHeight() - $offset_h * 2);
$appIconFile->adaptiveResizeImage($innerWidth, $innerHeight);
$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);
$appIconFile->destroy();
return $finalIconFile;
}
private function getAppIcon($app) {
$appPath = \OC_App::getAppPath($app);
$icon = $appPath . '/img/' . $app . '.svg';
if(file_exists($icon)) {
return $icon;
}
$icon = $appPath . '/img/app.svg';
if(file_exists($icon)) {
return $icon;
}
return \OC::$SERVERROOT . '/core/img/logo.svg';
}
private function getAppImage($app, $image) {
// TODO: add support for images in core/img/
$appPath = \OC_App::getAppPath($app);
if($app==="core") {
$icon = \OC::$SERVERROOT . '/core/img/' . $image;
if(file_exists($icon)) {
return $icon;
}
}
$icon = $appPath . '/img/' . $image;
if(file_exists($icon)) {
return $icon;
}
$icon = $appPath . '/img/' . $image . '.svg';
if(file_exists($icon)) {
return $icon;
}
$icon = $appPath . '/img/' . $image . '.png';
if(file_exists($icon)) {
return $icon;
}
$icon = $appPath . '/img/' . $image . '.gif';
if(file_exists($icon)) {
return $icon;
}
$icon = $appPath . '/img/' . $image . '.jpg';
if(file_exists($icon)) {
return $icon;
}
}
private function svgInvert($svg) {
$svg = preg_replace('/#(f{3,6})/i', '#REPLACECOLOR', $svg);
$svg = preg_replace('/#(0{3,6})/i', '#ffffff', $svg);
$svg = preg_replace('/#(REPLACECOLOR)/i', '#000000', $svg);
return $svg;
}
private function colorizeSvg($svg, $color) {
$svg = preg_replace('/#0082c9/i', $color, $svg);
return $svg;
}
}
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