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responsive view - viennajs 2013-08

responsive view - viennajs 2013-08

slides from my talk about http://rv.k94n.com on the viennajs meetup

Klemens Gordon

August 28, 2013

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  1. whats already on the table bookletmarks, extensions, websites, … -http://responsinator.com/?url=k94n.com

    -http://lab.maltewassermann.com/viewport- resizer AND a lot of devices (booting, unlocking, browser, typing, wlan …)
  2. the initial plan show a website in different device sizes

    like real devices lying on a desk keep it webkit - because I love the dev tools
  3. let's-a go! a very basic solution. [[320,480],[320,500]].forEach(function(s){ var i =

    document.createElement('iframe'); i.height = s[1]; i.width = s[0]; i.src = 'http://k94n.com'; document.body.appendChild(i); }); http://jsfiddle.net/k9ordon/UR2WK
  4. limitations - changing urls - cross domain issues (no iframe

    to host connection) - size issues (iframe size is device pixel size) - cpu …
  5. use cases - open tool with a target page loads

    in every size - synced actions - change page from a device - scroll a device - focus a device - keydown
  6. device sizing one does not simply put a 15” viewport

    into a 11” screen easy, webkitTransform: scale(*) (scale does not resize the box model) device.js#L100
  7. the crossdomain issue - keep devices in sync (scroll, location

    …) => postMessage() => Weeeeeee chrome extension version! - no problem on initial load good for sharing without extension
  8. communicating across domains 1/5 chrome extensions contentscript injects a waiter

    "content_scripts": [{ "matches": ["http://*/*"], "js": ["config.js", "client.js"], "run_at": "document_idle", "all_frames": true }]
  9. communicating across domains 2/5 waiter sends handshake to top window

    & listens to messages top.postMessage({method: 'handshake', h: window.innerHeight, w: window.innerWidth, l: window.location.href, o:window.location. origin, r:document.referrer}, rv_host); client.js#L4
  10. communicating across domains 3/5 top runs an instance of _stage,

    validates the handshake and sends back a success handshake stage.js#L66
  11. communicating across domains 5/5 client has event listeners on iframe

    document + posts messages to top client.js#L55
  12. Way to go ... - user agents - more +

    custom device sets - rotateable devices - share/explore responsive sites - create sharable screenshots