gs.content.favicon

The favicon for GroupServer

Authors:	Michael JasonSmith
Contact:	Michael JasonSmith <mpj17@onlinegroups.net>
Date:	2015-05-13
Organization:	GroupServer.org
Copyright:	This document is licensed under a Creative Commons Attribution-Share Alike 4.0 International License by OnlineGroups.Net.

Introduction

This product defines the favicon (also known as favourite icon, page icon, webpage icon, and shortcut icon) for GroupServer. It provides a resource directory, a viewlet, and a page — all of which contain the icon itself.

Resource directory

The resource directory favicon-20160321 provides the favicon at different sizes, including an SVG version. It maps onto the browser/images folder in this product.

Viewlet

The viewlet gs-content-favicon viewlet slots into the gs.content.layout.interfaces.IFavicon viewlet manager. It provides the elements necessary to link to the favicon from all HTML pages.

HTML 5:

Two <link> elements with rel="icon" attributes:

<link rel="icon" sizes="any" type="image/svg+xml"
      href="/++resource++favicon-20140624a/gs-logo.svg" />
<link rel="icon" sizes="256x256" type="image/png"
      href="/++resource++favicon-20140624a/gs-logo-256x256.png" />

Apple iOS:

One <link> element, with rel="apple-touch-icon":

<link rel="apple-touch-icon" sizes="152x152" type="image/png"
      href="/++resource++favicon-20140624a/gs-logo-152x152.png" />

Microsoft Windows 8:

Two <meta> elements for the badge (or tile):

<meta name="msapplication-TileColor" content="#CCCCCC" />
<meta name="msapplication-TileImage"
      content="/++resource++favicon-20140624a/gs-logo-144x144.png" />

Page

The page favicon.ico provides the favicon in Microsoft ICO format. An ICO is actually a container. The favicon.ico file provided by this product contains several PNG images at different resolutions. It is created by using the convert utility provided by ImageMagic:

$ convert gs-logo-16x16.png gs-logo-24x24.png gs-logo-32x32.png gs-logo-48x48.png gs-logo-64x64.png favicon.ico

The icon

The icon itself is an interlocking GS, in Helvetica, with the descender on the G removed. It was created in Inkscape; the original Inkscape SVG file is gs-logo-orig.svg, in the same browser/images directory as the other versions of the icon.

Acknowledgements

Thanks to Audrey Roy for the wonderful favicon-cheat-sheet.

Resources

• Code repository: https://github.com/groupserver/gs.content.favicon
• Questions and comments to http://groupserver.org/groups/development
• Report bugs at https://redmine.iopen.net/projects/groupserver