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embed the bitmap in the SVG as Firefox can display that but not the linked-in PNG
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1<!DOCTYPE html>
2<html>
3<head>
4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
5 <meta name="Author" content="KaiRo - Robert Kaiser">
6 <title>Firefox OS Tricorder</title>
7 <link rel="stylesheet" type="text/css" href="slides.css">
8 <script type="text/javascript" src="slides.js"></script>
9 <link rel="contents" href="#index" title="Overview">
10 <link rel="index" id="link-toc" href="#toc" title="Contents">
11 <link rel="start" id="link-start" href="#index" title="Start">
12</head>
13<body onload="docLoaded();">
14<header id="header"><div id="header-text">Tricorder</div>
15 <div id="subheader-text"></div>
16 <a id="headerlogo" href="#index" title="Startseite">Mozilla</a>
17</header>
18<nav id="slidenav">
19 <a href="#toc" id="nav-toc" accesskey="t">toc</a> ||
20 <a href="#index" id="nav-start" accesskey="s">start</a> ||
21 <a href="#" id="nav-prev" accesskey="p" hidden>&lt; back</a>
22 <span id="nav-prev-nolink" class="nolink">&lt; back</span> |
23 <a href="#" id="nav-next" id="goNext" accesskey="n" hidden>fwd &gt;</a>
24 <span id="nav-next-nolink" class="nolink">fwd &gt;</span>
25</nav>
26
27<article id="toc" title="Table of Contents">
28<h1>Table of Contents</h1>
29<h2>Firefox OS Tricorder</h2>
30
31<div class="captionedbox">
32<p class="captionedbox-caption">The following slides are available in this presentation:</p>
33<div class="captionedbox-content">
34<ul id="toc-list">
35</ul>
36</article>
37
38<article id="index" title="Start Page">
39<h1>Firefox OS Tricorder</h1>
40<h2>Reading Device Sensor Data in JavaScript</h2>
41
42<div class="simplebox">
43<mark><a href="http://home.kairo.at/">Robert Kaiser</a></mark>,
44"KaiRo" &lt;kairo@kairo.at&gt;
45<br><small>Program Manager, Mozilla QA</small>
46</div>
47
48<div class="captionedbox">
49<p class="captionedbox-caption">Slides:
50 <a href="http://slides.kairo.at/fosdem2015/">http://slides.kairo.at/fosdem2015/</a></p>
51<div class="captionedbox-content small">
52<ul class="small">
53 <li>Created for
54 <a href="http://fosdem.org/2015/schedule/track/mozilla/">Mozilla
55 Developer Room</a> at <a href="http://www.fosdem.org/">FOSDEM 2015</a> in
56 Brussels.</li>
57 <li>Written in HTML 5 with CSS 3 and JavaScript.</li>
58 <li>Navigation via links on all slides, via access keys
59 (e.g. "n"/Alt+Shift+N for "next") or back/forward arrow keys</li>
60 <li><a href="#toc">Contents</a></li>
61 <li><a rel="license" href="http://creativecommons.org/licenses/by-sa/3.0/at/"><img
62 alt="Licensed under CC-BY-SA," style="border-width:0;vertical-align:bottom;"
63 src="cc-by-sa-80x15.png"></a> 01/2015 Robert Kaiser -
64 "Mozilla", "Firefox" and their logos are
65 <a href="http://www.mozilla.org/foundation/trademarks/list.html">trademarks
66 of the Mozilla Foundation</a>; <a href="http://www.startrek.com/">Star Trek</a>
67 and related items are trademarks of
68 <a href="http://www.paramount.com/">Paramount Pictures</a>.</li>
69</ul>
70</div>
71</div>
72</article>
73
74<article id="tricorder" title="Tricorder">
75<h1>What is a Tricorder?</h1>
76
77<div class="simplebox">
78<img src="starfleet_tricorder_2370.jpg" class="slidepic"
79 alt="Starfleet Tricorder, 2370">
80<p>Sensor device as seen on "Star Trek"</p>
81<p>Displays whatever data is needed at plot speeds and resolutions.</p>
82<p class="ensurepicinbox"></p>
83</div>
84</article>
85
86<article id="fxos-tricorder" title="Firefox OS Tricorder">
87<h1>Firefox OS Tricorder App</h1>
88
89<div class="simplebox">
90<p>Displays data from device sensors as exposed by WebAPIs</p>
91<p><a href="https://marketplace.firefox.com/app/tricorder/">marketplace.firefox.com/app/tricorder/</a></p>
92<p>Code: <a href="https://github.com/KaiRo-at/tricorder">github.com/KaiRo-at/tricorder</a></p>
93</div>
94</article>
95
96<article id="ui" title="UI">
97<h1>Firefox OS Tricorder UI</h1>
98
99<div class="simplebox cent">
100<img src="tricorder-ui.svg"
101 alt="Tricorder UI description">
102</div>
103</article>
104
105<article id="module" title="Module">
106<h1>Module</h1>
107
108<div class="simplebox">
109<ul>
110 <li>HTML (switch, display)</li>
111 <li>JS Object
112 <ul>
113 <li>2 Methods: activate(), deactivate()</li>
114 </ul>
115 </li>
116</ul>
117</div>
118</article>
119
120<article id="position" title="Position Module">
121<h1>Position Module</h1>
122
123<div class="simplebox">
124<p>GPS, WiFi/Cell Location</p>
125<p>API: Geolocation</p>
126<p>Permission: geolocation</p>
127</div>
128</article>
129
130<article id="position-code" title="Position: Code">
131<h1>Position: Code</h1>
132
133<div class="simplebox">
134<pre>
135 this.watchID = navigator.geolocation.watchPosition(
136 function(position) {
137 position.coords.latitude / .longitude / .accuracy / ...
138 },
139 function(error) { ... },
140 {enableHighAccuracy: true, maximumAge: 10000, timeout: 60000}
141 );
142
143 navigator.geolocation.clearWatch(this.watchID);
144</pre>
145</div>
146</article>
147
148<article id="gravity" title="Gravity Module">
149<h1>Gravity Module</h1>
150
151<div class="simplebox">
152<p>Accelerometer, Magnetometer</p>
153<p>APIs: deviceorientation, devicemotion events</p>
154<p>Permissions: ---</p>
155</div>
156</article>
157
158<article id="gravity-code" title="Gravity: Code">
159<h1>Gravity: Code</h1>
160
161<div class="simplebox">
162<pre>
163 window.addEventListener("deviceorientation", this.orientEvent, true);
164 window.addEventListener("devicemotion", this.motionEvent, true);
165
166 orientEvent: function(orientData) {
167 orientData.alpha / .beta / .gamma (in °)
168 },
169 motionEvent: function(event) {
170 event.accelerationIncludingGravity.x / .y / .z (in m/s²)
171 },
172
173 window.removeEventListener("deviceorientation", this.orientEvent, true);
174 window.removeEventListener("devicemotion", this.motionEvent, true);
175</pre>
176</div>
177</article>
178
179<article id="sound" title="Sound Module">
180<h1>Sound Module</h1>
181
182<div class="simplebox">
183<p>Microphone</p>
184<p>APIs: WebRTC(getUserMedia), WebAudio</p>
185<p>Permissions: audio-capture</p>
186</div>
187</article>
188
189<article id="sound-code" title="Sound: Code">
190<h1>Sound: Code</h1>
191
192<div class="simplebox">
193<pre>
194 navigator.getUserMedia({ audio: true },
195 function(aLocalMediaStream) {
196 gModSound.mAudio.stream = aLocalMediaStream;
197 gModSound.mAudio.context = new window.AudioContext();
198 gModSound.mAudio.input = gModSound.mAudio.context.createMediaStreamSource(gModSound.mAudio.stream);
199 gModSound.mAudio.analyzer = gModSound.mAudio.context.createAnalyser();
200 gModSound.mAudio.input.connect(gModSound.mAudio.analyzer);
201 },
202 function(err) { ... }
203 );
204
205 // in window.requestAnimationFrame():
206 var data = new Uint8Array(gModSound.mAudio.frequencySlices);
207 gModSound.mAudio.analyzer.getByteFrequencyData(data);
208 // ... do something with data ...
209
210 gModSound.mAudio.stream.stop();
211</pre>
212</div>
213</article>
214
215<article id="environment" title="Environment Module">
216<h1>Environment Module</h1>
217
218<div class="simplebox">
219<p>Light, Proximity; Flashlight</p>
220<p>APIs: devicelight, deviceproximity events; Camera API</p>
221<p>Permissions: ---; camera (for Flash)</p>
222</div>
223</article>
224
225<article id="environment-code" title="Environment: Code">
226<h1>Environment: Code</h1>
227
228<div class="simplebox">
229<pre>
230 window.addEventListener("devicelight", this.lightEvent, true);
231 window.addEventListener("deviceproximity", this.proxEvent, true);
232
233 lightEvent: function(lightData) {
234 lightData.value (in lux)
235 },
236 proxEvent: function(proxData) {
237 proxData.min &lt;= .value &lt;= .max (in cm)
238 },
239
240 window.removeEventListener("devicelight", this.lightEvent, true);
241 window.removeEventListener("deviceproximity", this.proxEvent, true);
242
243 // flash/torch code works via navigator.mozCameras.getCamera
244 // flaky and subject to change, please consult code on github
245</pre>
246</div>
247</article>
248
249<article id="device" title="Device Module">
250<h1>Device Module</h1>
251
252<div class="simplebox">
253<p>Battery</p>
254<p>APIs: Battery</p>
255<p>Permissions: ---</p>
256</div>
257</article>
258
259<article id="device-code" title="Device: Code">
260<h1>Device: Code</h1>
261
262<div class="simplebox">
263<pre>
264 (navigator.battery.level * 100).toFixed(1) + "%";
265
266 if (navigator.battery.charging) {
267 if (navigator.battery.chargingTime == 0 ||
268 navigator.battery.chargingTime == Infinity) {
269 "charging";
270 }
271 else {
272 "charging, " + navigator.battery.chargingTime + "s remaining";
273 }
274 }
275 else {
276 if (navigator.battery.dischargingTime == 0 ||
277 navigator.battery.dischargingTime == Infinity) {
278 "discharging";
279 }
280 else {
281 navigator.battery.dischargingTime + "s usage remaining";
282 }
283 }
284</pre>
285</div>
286</article>
287
288<article id="end" title="The End">
289
290<div class="simplebox">
291<h1 class="cent" style="position: relative; z-index: 3; color: #FFFFFF; font-size: 2.5em;">Questions?</h1>
292<img src="mister_tricorder.jpg" class="sshot"
293 style="width: 100%; margin-top: -4.5em; position: relative; z-index: 1;"
294 alt="Data &amp; Mister Tricorder">
295</div>
296</article>
297
298</body>
299</html>
KaiRo's slides for various talks, see slides.kairo.at