%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
/**
* SPDX-FileCopyrightText: 2016 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
namespace OCA\Theming;
use Imagick;
use ImagickPixel;
use OCP\Files\SimpleFS\ISimpleFile;
class IconBuilder {
/** @var ThemingDefaults */
private $themingDefaults;
/** @var Util */
private $util;
/** @var ImageManager */
private $imageManager;
/**
* IconBuilder constructor.
*
* @param ThemingDefaults $themingDefaults
* @param Util $util
* @param ImageManager $imageManager
*/
public function __construct(
ThemingDefaults $themingDefaults,
Util $util,
ImageManager $imageManager
) {
$this->themingDefaults = $themingDefaults;
$this->util = $util;
$this->imageManager = $imageManager;
}
/**
* @param $app string app name
* @return string|false image blob
*/
public function getFavicon($app) {
if (!$this->imageManager->shouldReplaceIcons()) {
return false;
}
try {
$favicon = new Imagick();
$favicon->setFormat("ico");
$icon = $this->renderAppIcon($app, 128);
if ($icon === false) {
return false;
}
$icon->setImageFormat("png32");
$clone = clone $icon;
$clone->scaleImage(16, 0);
$favicon->addImage($clone);
$clone = clone $icon;
$clone->scaleImage(32, 0);
$favicon->addImage($clone);
$clone = clone $icon;
$clone->scaleImage(64, 0);
$favicon->addImage($clone);
$clone = clone $icon;
$clone->scaleImage(128, 0);
$favicon->addImage($clone);
$data = $favicon->getImagesBlob();
$favicon->destroy();
$icon->destroy();
$clone->destroy();
return $data;
} catch (\ImagickException $e) {
return false;
}
}
/**
* @param $app string app name
* @return string|false image blob
*/
public function getTouchIcon($app) {
try {
$icon = $this->renderAppIcon($app, 512);
if ($icon === false) {
return false;
}
$icon->setImageFormat("png32");
$data = $icon->getImageBlob();
$icon->destroy();
return $data;
} catch (\ImagickException $e) {
return false;
}
}
/**
* Render app icon on themed background color
* fallback to logo
*
* @param $app string app name
* @param $size int size of the icon in px
* @return Imagick|false
*/
public function renderAppIcon($app, $size) {
$appIcon = $this->util->getAppIcon($app);
if ($appIcon === false) {
return false;
}
if ($appIcon instanceof ISimpleFile) {
$appIconContent = $appIcon->getContent();
$mime = $appIcon->getMimeType();
} else {
$appIconContent = file_get_contents($appIcon);
$mime = mime_content_type($appIcon);
}
if ($appIconContent === false || $appIconContent === "") {
return false;
}
$color = $this->themingDefaults->getColorPrimary();
// generate background image with rounded corners
$cornerRadius = 0.2 * $size;
$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="' . $size . '" height="' . $size . '" xmlns:xlink="http://www.w3.org/1999/xlink">' .
'<rect x="0" y="0" rx="' . $cornerRadius . '" ry="' . $cornerRadius . '" width="' . $size. '" height="' . $size . '" style="fill:' . $color . ';" />' .
'</svg>';
// resize svg magic as this seems broken in Imagemagick
if ($mime === "image/svg+xml" || substr($appIconContent, 0, 4) === "<svg") {
if (substr($appIconContent, 0, 5) !== "<?xml") {
$svg = "<?xml version=\"1.0\"?>".$appIconContent;
} else {
$svg = $appIconContent;
}
$tmp = new Imagick();
$tmp->setBackgroundColor(new ImagickPixel('transparent'));
$tmp->setResolution(72, 72);
$tmp->readImageBlob($svg);
$x = $tmp->getImageWidth();
$y = $tmp->getImageHeight();
$tmp->destroy();
// convert svg to resized image
$appIconFile = new Imagick();
$resX = (int)(72 * $size / $x);
$resY = (int)(72 * $size / $y);
$appIconFile->setResolution($resX, $resY);
$appIconFile->setBackgroundColor(new ImagickPixel('transparent'));
$appIconFile->readImageBlob($svg);
/**
* invert app icons for bright primary colors
* the default nextcloud logo will not be inverted to black
*/
if ($this->util->isBrightColor($color)
&& !$appIcon instanceof ISimpleFile
&& $app !== "core"
) {
$appIconFile->negateImage(false);
}
} else {
$appIconFile = new Imagick();
$appIconFile->setBackgroundColor(new ImagickPixel('transparent'));
$appIconFile->readImageBlob($appIconContent);
}
// offset for icon positioning
$padding = 0.15;
$border_w = (int)($appIconFile->getImageWidth() * $padding);
$border_h = (int)($appIconFile->getImageHeight() * $padding);
$innerWidth = ($appIconFile->getImageWidth() - $border_w * 2);
$innerHeight = ($appIconFile->getImageHeight() - $border_h * 2);
$appIconFile->adaptiveResizeImage($innerWidth, $innerHeight);
// center icon
$offset_w = (int)($size / 2 - $innerWidth / 2);
$offset_h = (int)($size / 2 - $innerHeight / 2);
$finalIconFile = new Imagick();
$finalIconFile->setBackgroundColor(new ImagickPixel('transparent'));
$finalIconFile->readImageBlob($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->setImageFormat('png24');
if (defined("Imagick::INTERPOLATE_BICUBIC") === true) {
$filter = Imagick::INTERPOLATE_BICUBIC;
} else {
$filter = Imagick::FILTER_LANCZOS;
}
$finalIconFile->resizeImage($size, $size, $filter, 1, false);
$appIconFile->destroy();
return $finalIconFile;
}
/**
* @param $app string app name
* @param $image string relative path to svg file in app directory
* @return string|false content of a colorized svg file
*/
public function colorSvg($app, $image) {
$imageFile = $this->util->getAppImage($app, $image);
if ($imageFile === false || $imageFile === "") {
return false;
}
$svg = file_get_contents($imageFile);
if ($svg !== false && $svg !== "") {
$color = $this->util->elementColor($this->themingDefaults->getColorPrimary());
$svg = $this->util->colorizeSvg($svg, $color);
return $svg;
} else {
return false;
}
}
}
Zerion Mini Shell 1.0