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HTML5 and Designing a Rich Internet Experience. Garth Colasurdo HSLIC Web and Applications Group gcolasurdo@salud.unm.edu. In This Presentation. HTML5 ≈ HTML 5 + CSS 3 + JavaScript Rich Internet Applications (RIA) HTML5 x 5 Caution and Progress Example and Reference Sites.
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HTML5 and Designing a Rich Internet Experience Garth Colasurdo HSLIC Web and Applications Group gcolasurdo@salud.unm.edu
In This Presentation • HTML5 ≈ HTML 5 + CSS 3 + JavaScript • Rich Internet Applications (RIA) • HTML5 x 5 • Caution and Progress • Example and Reference Sites
HTML5 ≈ HTML 5 + CSS 3 + JavaScript • HTML5 is a suite of tools for: • Markup (HTML 5) • Presentation (CSS 3) • Interaction (DOM, Ajax, APIs) • Brought on by the evolving use of the web http://slides.html5rocks.com/
A Rough History of Web Standards HTML 5 CSS
Rich Internet Applications (RIA) • Space between the internet and the desktop • Apps that look good and behave well • Adobe Air/Flash, Java, Silverlight, Gears • Availability • Anywhere a web browser is available • As a desktop widget or application • Part of a mobile application store
5 HTML Enhancements • HTML • Forms • CSS • Offline applications • Local storage
HTML Extended • Document Flow: div, section, article, nav, aside, header, footer • Audio, Video and Embed • Canvas: paths, gradients, image manipulation, events • Microdata for semantics and enhanced search engine results (Google Rich Snippets)
HTML Header Figure Navigation Image, Video, Quote, Table, etc… Aside Section Article Footer Article Footer Article Footer Legend Footer
Canvas <canvas id=“canvas” width=“150” height=“150”> </canvas> function draw() { var canvas = document.getElementById(“canvas”); if (canvas.getContext) { varctx = canvas.getContext(“2d”); ctx.fillStyle = “rgb(200,0,0)”; ctx.fillRect (10,10,55,50); ctx.fillStyle = “rgb(0,0,200)”; ctx.fillRect (30,30,55,50); } }
Form Enhancements • Placeholder text • Specific text input: email, URL, number, search • Slider • Date picker • User Agent validation
CSS Effects • Rounded corners • Gradients • Box and text shadows • Fonts • Transparencies • Multiple background images and border images • Multiple columns and grid layout • Box sizing • Stroke and outlines • Animation, movement and rotation • Improved selectors
CSS Effect Example .amazing { border: 1px solid blue; color: red; background-color: gold; -webkit-border-radius: 40px; -moz-border-radius: 40px; border-radius: 40px; -webkit-box-shadow: 8px 8px 6px #474747; -moz-box-shadow: 8px 8px 6px #474747; box-shadow: 8px 8px 6px #474747; text-shadow: 8px 8px 2px #595959; filter: dropshadow(color=#595959, offx=8, offy=8); } Amazing CSS Effects http://css3generator.com/
CSS Timelines http://mattbango.com/notebook/web-development/pure-css-timeline/
Programmer Tools • Offline Applications • Storage • Communication • Web Workers • Web Sockets • Desktop experience • Drag and Drop • Notifications • Geolocation
Offline Applications <html mainfest=“http://m.health.unm.edu/someapp.manifest”> … </html> CACHE MANIFEST #v1.01 #Explicitly cached files CACHE: index.html Stylesheet.css Images/logo.png NETWORK: Search.cfm Login.cfm /dynamicpages FALLBACK: /dynamicpage.cfm /static.html someapp.manifest http://www.whatwg.org/specs/web-apps/current-work/multipage/offline.html
Local Storage • Beyond cookies- local storage • Manipulated by JavaScript • Persistent • 5MB storage per “origin” • Secure (no communication out of the browser) • Session storage • Lasts as long as the browser is open • Each page and tab is a new session • Browser based SQLite or IndexedDB
Local Storage • Web storagewindow.localStorage[‘value’] = ‘Save this!’; • Session storagesessionStorage.useLater(‘fullname’, ‘Garth Colasurdo’);alert(“Hello ” + sessionStorage.fullname); • Database storagevar database = openDatabase(“Database Name”, “Database Version”);database.executeSql(“SELECT * FROM test”, function(result1) { …}); http://dev.w3.org/html5/webstorage/
Cautions • Browser implementation is fragmented • Standards are in development • HTML Candidate Recommendation is scheduled for 2012 • CSS3 is in multiple drafts and proposals • ECMA-262 (edition 3) (or JavaScript 1.5) • New markup and architecture design
Progress • Multiple support levels • HTML editors • CSS editors and frameworks • JavaScript libraries and frameworks • Astounding user agent development • JavaScript engines • Rendering engines • Device awareness • Widget adoption • Robust vendor competition and cooperation • Continue with progressive enhancement/graceful failure methods
Advocacy Sites • Total clearing house of HTML5 (start with the presentation)http://html5rocks.com • HTML5 Watch is a list of interesting RIA advanceshttp://html5watch.tumblr.com • CSS3 Bloghttp://www.css3.info
Demos and Experiments • Chrome Experimentshttp://www.chromeexperiments.com • Apple HTML5 Showcase http://www.apple.com/html5/ • Canvas Demoshttp://www.canvasdemos.com • RIA Demos with browser support listedhttp://html5demos.com • Our Solar Systemhttp://neography.com/experiment/circles/solarsystem/ • Pure CSS3 Animated AT-AT Walker from Star Wars http://blog.optimum7.com/anthony/website-design/pure-css3-animated-at-at-walker-from-star-wars-2.html
Developer Reference Sites • W3Chttp://dev.w3.org/html5/html-author/http://w3.org/TR/css3-roadmap/ • W3Schools HTML 5 Referencehttp://www.w3schools.com/html5/ • Dive Into HTML 5 (prerelease site for an O’Reilly book)http://diveintohtml5.org • WebKit (Safari and Chromium)http://developer.apple.com/safari/library/navigation/http://www.chromium/home/ • Mozillahttp://developer.mozilla.org/en/html/html5/ • IE 8 & 9http://msdn.microsoft.com/en-us/library/aa737439.aspxhttp://ie.microsoft.com/testdrive/