Add new ACP option to upload Touch Icon, #3668

Also added a number of fixes for mobile enhancements, such
as serving a manifest.json file for Android devices, and
serving proper link tags for all uploaded touch icons.

This commit also creates a new template helper for link tags.

public/src/admin/settings/general.js

@@ -8,6 +8,12 @@ define('admin/settings/general', ['admin/settings'], function(Settings) {
 		$('button[data-action="removeLogo"]').on('click', function() {
 			$('input[data-field="brand:logo"]').val('');
 		});
+		$('button[data-action="removeFavicon"]').on('click', function() {
+			$('input[data-field="brand:favicon"]').val('');
+		});
+		$('button[data-action="removeTouchIcon"]').on('click', function() {
+			$('input[data-field="brand:touchIcon"]').val('');
+		});
 	};
 
 	return Module;

public/src/modules/helpers.js

@@ -40,6 +40,16 @@
 		return '<meta ' + name + property + content + '/>';
 	};
 
+	helpers.buildLinkTag = function(tag) {
+		var link = tag.link ? 'link="' + tag.link + '" ' : '',
+			rel = tag.rel ? 'rel="' + tag.rel + '" ' : '',
+			type = tag.type ? 'type="' + tag.type + '" ' : '',
+			href = tag.href ? 'href="' + tag.href + '" ' : '',
+			sizes = tag.sizes ? 'sizes="' + tag.sizes + '" ' : '';
+
+		return '<link ' + link + rel + type + sizes + href + '/>';
+	};
+
 	helpers.stringify = function(obj) {
 		// Turns the incoming object into a JSON string
 		return JSON.stringify(obj).replace(/&/gm,"&amp;").replace(/</gm,"&lt;").replace(/>/gm,"&gt;").replace(/"/g, '&quot;');

src/controllers/admin/uploads.js

@@ -2,9 +2,11 @@
 
 var fs = require('fs'),
 	path = require('path'),
+	async = require('async'),
 	nconf = require('nconf'),
 	winston = require('winston'),
 	file = require('../../file'),
+	image = require('../../image'),
 	plugins = require('../../plugins');
 
 
@@ -52,6 +54,41 @@ uploadsController.uploadFavicon = function(req, res, next) {
 	}
 };
 
+uploadsController.uploadTouchIcon = function(req, res, next) {
+	var uploadedFile = req.files.files[0],
+		allowedTypes = ['image/png'],
+		sizes = [36, 48, 72, 96, 144, 192];
+
+	if (validateUpload(req, res, next, uploadedFile, allowedTypes)) {
+		file.saveFileToLocal('touchicon-orig.png', 'system', uploadedFile.path, function(err, imageObj) {
+			// Resize the image into squares for use as touch icons at various DPIs
+			async.each(sizes, function(size, next) {
+				async.series([
+					async.apply(file.saveFileToLocal, 'touchicon-' + size + '.png', 'system', uploadedFile.path),
+					async.apply(image.resizeImage, {
+						path: path.join(nconf.get('base_dir'), nconf.get('upload_path'), 'system', 'touchicon-' + size + '.png'),
+						extension: 'png',
+						width: size,
+						height: size
+					})
+				], next);
+			}, function(err) {
+				fs.unlink(uploadedFile.path, function(err) {
+					if (err) {
+						winston.error(err);
+					}
+				});
+
+				if (err) {
+					return next(err);
+				}
+
+				res.json([{name: uploadedFile.name, url: imageObj.url}]);
+			});
+		});
+	}
+};
+
 uploadsController.uploadLogo = function(req, res, next) {
 	upload('site-logo', req, res, next);
 };

src/controllers/index.js

@@ -186,6 +186,52 @@ Controllers.robots = function (req, res) {
 	}
 };
 
+Controllers.manifest = function(req, res) {
+	var manifest = {
+			name: meta.config.title || 'NodeBB',
+			start_url: nconf.get('relative_path') + '/',
+			display: 'standalone',
+			orientation: 'portrait',
+			icons: []
+		};
+
+	if (meta.config['brand:touchIcon']) {
+		manifest.icons.push({
+			src: nconf.get('relative_path') + '/uploads/system/touchicon-36.png',
+			sizes: '36x36',
+			type: 'image/png',
+			density: 0.75
+		}, {
+			src: nconf.get('relative_path') + '/uploads/system/touchicon-48.png',
+			sizes: '48x48',
+			type: 'image/png',
+			density: 1.0
+		}, {
+			src: nconf.get('relative_path') + '/uploads/system/touchicon-72.png',
+			sizes: '72x72',
+			type: 'image/png',
+			density: 1.5
+		}, {
+			src: nconf.get('relative_path') + '/uploads/system/touchicon-96.png',
+			sizes: '96x96',
+			type: 'image/png',
+			density: 2.0
+		}, {
+			src: nconf.get('relative_path') + '/uploads/system/touchicon-144.png',
+			sizes: '144x144',
+			type: 'image/png',
+			density: 3.0
+		}, {
+			src: nconf.get('relative_path') + '/uploads/system/touchicon-192.png',
+			sizes: '192x192',
+			type: 'image/png',
+			density: 4.0
+		})
+	}
+
+	res.status(200).json(manifest);
+};
+
 Controllers.outgoing = function(req, res, next) {
 	var url = req.query.url,
 		data = {

src/controllers/uploads.js

@@ -74,7 +74,12 @@ uploadsController.uploadThumb = function(req, res, next) {
 
 			if (uploadedFile.type.match(/image./)) {
 				var size = meta.config.topicThumbSize || 120;
-				image.resizeImage(uploadedFile.path, path.extname(uploadedFile.name), size, size, function(err) {
+				image.resizeImage({
+					path: uploadedFile.path,
+					extension: path.extname(uploadedFile.name),
+					width: size,
+					height: size
+				}, function(err) {
 					if (err) {
 						return next(err);
 					}

src/image.js

@@ -7,18 +7,18 @@ var fs = require('fs'),
 
 var image = {};
 
-image.resizeImage = function(path, extension, width, height, callback) {
+image.resizeImage = function(data, callback) {
 	if (plugins.hasListeners('filter:image.resize')) {
 		plugins.fireHook('filter:image.resize', {
-			path: path,
-			extension: extension,
-			width: width,
-			height: height
+			path: data.path,
+			extension: data.extension,
+			width: data.width,
+			height: data.height
 		}, function(err, data) {
 			callback(err);
 		});
 	} else {
-		new Jimp(path, function(err, image) {
+		new Jimp(data.path, function(err, image) {
 			if (err) {
 				return callback(err);
 			}
@@ -26,7 +26,7 @@ image.resizeImage = function(path, extension, width, height, callback) {
 			var w = image.bitmap.width,
 				h = image.bitmap.height,
 				origRatio = w/h,
-				desiredRatio = width/height,
+				desiredRatio = data.width/data.height,
 				x = 0,
 				y = 0,
 				crop;
@@ -47,10 +47,10 @@ image.resizeImage = function(path, extension, width, height, callback) {
 			async.waterfall([
 				crop,
 				function(image, next) {
-					image.resize(width, height, next);
+					image.resize(data.width, data.height, next);
 				},
 				function(image, next) {
-					image.write(path, next);
+					image.write(data.target || data.path, next);
 				}
 			], function(err) {
 				callback(err);

src/meta/tags.js

@@ -21,6 +21,9 @@ module.exports = function(Meta) {
 				}, {
 					name: 'apple-mobile-web-app-capable',
 					content: 'yes'
+				}, {
+					name: 'mobile-web-app-capable',
+					content: 'yes'
 				}, {
 					property: 'og:site_name',
 					content: Meta.config.title || 'NodeBB'
@@ -42,9 +45,41 @@ module.exports = function(Meta) {
 					type: "image/x-icon",
 					href: nconf.get('relative_path') + '/favicon.ico'
 				}, {
-					rel: 'apple-touch-icon',
-					href: nconf.get('relative_path') + '/apple-touch-icon'
+					rel: "manifest",
+					href: nconf.get('relative_path') + '/manifest.json'
 				}];
+
+				// Touch icons for mobile-devices
+				if (Meta.config['brand:touchIcon']) {
+					defaultLinks.push({
+						rel: 'apple-touch-icon',
+						href: nconf.get('relative_path') + '/apple-touch-icon'
+					}, {
+						rel: 'icon',
+						sizes: '36x36',
+						href: nconf.get('relative_path') + '/uploads/system/touchicon-36.png'
+					}, {
+						rel: 'icon',
+						sizes: '48x48',
+						href: nconf.get('relative_path') + '/uploads/system/touchicon-48.png'
+					}, {
+						rel: 'icon',
+						sizes: '72x72',
+						href: nconf.get('relative_path') + '/uploads/system/touchicon-72.png'
+					}, {
+						rel: 'icon',
+						sizes: '96x96',
+						href: nconf.get('relative_path') + '/uploads/system/touchicon-96.png'
+					}, {
+						rel: 'icon',
+						sizes: '144x144',
+						href: nconf.get('relative_path') + '/uploads/system/touchicon-144.png'
+					}, {
+						rel: 'icon',
+						sizes: '192x192',
+						href: nconf.get('relative_path') + '/uploads/system/touchicon-192.png'
+					});
+				}
 				plugins.fireHook('filter:meta.getLinkTags', defaultLinks, next);
 			}
 		}, function(err, results) {

src/routes/admin.js

@@ -13,6 +13,7 @@ function apiRoutes(router, middleware, controllers) {
 
 	router.post('/category/uploadpicture', middlewares, controllers.admin.uploads.uploadCategoryPicture);
 	router.post('/uploadfavicon', middlewares, controllers.admin.uploads.uploadFavicon);
+	router.post('/uploadTouchIcon', middlewares, controllers.admin.uploads.uploadTouchIcon);
 	router.post('/uploadlogo', middlewares, controllers.admin.uploads.uploadLogo);
 	router.post('/uploadgravatardefault', middlewares, controllers.admin.uploads.uploadGravatarDefault);
 }

src/routes/meta.js

@@ -33,5 +33,6 @@ module.exports = function(app, middleware, controllers) {
 	// app.get('/nodebb.min.js.map', middleware.addExpiresHeaders, sendJSSourceMap);
 	app.get('/sitemap.xml', controllers.sitemap);
 	app.get('/robots.txt', controllers.robots);
+	app.get('/manifest.json', controllers.manifest);
 	app.get('/css/previews/:theme', controllers.admin.themes.get);
 };

src/user/picture.js

@@ -37,7 +37,12 @@ module.exports = function(User) {
 				file.isFileTypeAllowed(picture.path, ['png', 'jpeg', 'jpg', 'gif'], next);
 			},
 			function(next) {
-				image.resizeImage(picture.path, extension, imageDimension, imageDimension, next);
+				image.resizeImage({
+					path: picture.path,
+					extension: extension,
+					width: imageDimension,
+					height: imageDimension
+				}, next);
 			},
 			function(next) {
 				if (convertToPNG) {

src/views/admin/settings/general.tpl

@@ -74,12 +74,33 @@
 				<input id="faviconUrl" type="text" class="form-control" placeholder="favicon.ico" data-field="brand:favicon" data-action="upload" data-target="faviconUrl" data-route="{config.relative_path}/api/admin/uploadfavicon" readonly />
 				<span class="input-group-btn">
 					<input data-action="upload" data-target="faviconUrl" data-route="{config.relative_path}/api/admin/uploadfavicon" type="button" class="btn btn-default" value="Upload"></input>
+					<button data-action="removeFavicon" type="button" class="btn btn-default btn-danger"><i class="fa fa-times"></i></button>
 				</span>
 			</div>
 		</div>
 	</div>
 </div>
 
+<div class="row">
+	<div class="col-sm-2 col-xs-12 settings-header">
+		Homescreen/Touch Icon
+	</div>
+	<div class="col-sm-10 col-xs-12">
+		<div class="form-group">
+			<div class="input-group">
+				<input id="touchIconUrl" type="text" class="form-control" data-field="brand:touchIcon" data-action="upload" data-target="touchIconUrl" data-route="{config.relative_path}/api/admin/uploadTouchIcon" readonly />
+				<span class="input-group-btn">
+					<input data-action="upload" data-target="touchIconUrl" data-route="{config.relative_path}/api/admin/uploadTouchIcon" type="button" class="btn btn-default" value="Upload"></input>
+					<button data-action="removeTouchIcon" type="button" class="btn btn-default btn-danger"><i class="fa fa-times"></i></button>
+				</span>
+			</div>
+			<p class="help-block">
+				Recommended size and format: 192x192, PNG format only. If no touch icon is specified, NodeBB will fall back to using the favicon.
+			</p>
+		</div>
+	</div>
+</div>
+
 <div class="row">
 	<div class="col-sm-2 col-xs-12 settings-header">Miscellaneous</div>
 	<div class="col-sm-10 col-xs-12">