doc/page.html

   1 <div>
   2 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
   3 <script type="text/javascript" src="../SVGAnimation.js"></script>
   4 <script type="text/javascript" src="../SVGPlayerOne.js"></script>
   5 <script type="text/javascript">
   6   function charge(i,p,a,b) {
   7     var anim = new Animation(i,p,a,b);
   8     anim.loopOnload();
   9     var player = new Controle(anim);
  10     player.connect();
  11   }
  12   function charge_anim2() {
  13     var a = new Animation('anim2','../ellipsographe/svg/ellipsographe-',1,91);
  14     a.loopOnload();
  15     var b = new Controle(a);
  16     b.connect();
  17   }
  18   $(window).load(function() {
  19     anim = new Animation('XXXX','../ellipsographe/svg/ellipsographe-',1,91);
  20     anim.loopOnload();
  21     player = new Controle(anim);
  22     player.connect();
  23     });
  24 </script>
  25 <p><strong>Participants :</strong> Chupin Maxime, Sarlat Jean-Michel.</p>
  26 <p><strong>Interface du d&#233;p&#244;t Git :</strong> <a href="http://melusine.eu.org/syracuse/G/git/?p=svganimation.git;a=summary" class="uri">http://melusine.eu.org/syracuse/G/git/?p=svganimation.git;a=summary</a></p>
  27 <p>L'objectif est de d&#233;velopper, en particulier, du code Javascript afin de pr&#233;senter des animations de fichiers SVG produits, en particulier, par MetaPost. Ce d&#233;veloppement n'&#233;tant pas tout &#224; fait pr&#233;d&#233;termin&#233;, il sera constitu&#233; &#224; partir de l'exploration de diff&#233;rents sc&#233;narios de pr&#233;sentation de ces animations et des modes de construction des fichiers SVG.</p>
  28 <div class="alert alert-warning">
  29 <p>
  30 Les diff&#233;rents exemples se charge en cliquant sur le bouton d&#233;di&#233;. Ceci <strong>n'est pas</strong> le comportement par d&#233;faut, c'est du code JavaScript qui permettra de choisir quand l'animation se charge. Il s'agit d'&#233;viter de charger toutes les animations pr&#233;sentes sur cette page, cela serait bien trop lourd.
  31 </p>
  32 <p>
  33 Nous pr&#233;sentons, dans la section XX, le code qui permet de charger l'animation sur demande.
  34 </p>
  35 </div>
  36 <h2 id="installation">Installation</h2>
  37 <p>Le fichier <code>SVGAnimation.js</code> (que l'on supposera dans un r&#233;pertoire nomm&#233; <code>js</code>) est &#224; charger dans la page <code>html</code> en mettant les lignes suivantes :</p>
  38 <pre><code>&lt;script type=&quot;text/javascript&quot; src=&quot;js/SVGAnimation.js&quot;&gt;&lt;/script&gt;</code></pre>
  39 <h2 id="principe">Principe</h2>
  40 <p>Le principe est simple : on dispose d'un ensemble d'images au format SVG qui constituent, par une suite chronologique, une animation &#224; visionner. La libraire <code>SVGAnimation</code> permet de visionner cette animation dans une page HTML gr&#226;ce &#224; JavaScript.</p>
  41 <h3 id="la-famille-dimages">La famille d'images</h3>
  42 <p>Les diff&#233;rentes images composant l'animation doivent se nommer avec un <em>prefixe</em> suivi d'un nombre (indice), celui-ci pouvant &#234;tre formater de diff&#233;rente fa&#231;ons :</p>
  43 <pre><code>monfichier-1.svg  monfichier-2.svg monfichier-3.svg ...</code></pre>
  44 <p>ou, autre exemple :</p>
  45 <pre><code>monfichier-001.svg  monfichier-002.svg monfichier-003.svg ...</code></pre>
  46 <p>Nous verrons comment g&#233;rer le formatage de l'indice des images dans les sections suivantes.</p>
  47 <div class="alert alert-info">
  48 <p>
  49 L'id&#233;e d'une telle librairie est venue du fait que le logiciel MetaPost permet de produire des images SVG, et nous l'utilisons abondamment pour la production d'animations.
  50 </p>
  51 </div>
  52 <h2 id="lutilisation">L'utilisation</h2>
  53 <h3 id="c&#244;t&#233;-html">C&#244;t&#233; HTML</h3>
  54 <p>La librairie <code>SVGAnimation</code> d&#233;finit le <em>prototype</em> javascript <code>Animation</code>. Pour l'utiliser il faut d&#233;clarer une balise HTML <code>div</code> avec un identifiant (<code>id</code>) unique. Choisissons pour l'exemple <code>XXXX</code>. &#192; l'int&#233;rieur de ces balises, il faut : * une balise <code>img</code> contenant un image <code>svg</code> qui servira de vignette &#224; l'animation; * une balise <code>div</code> avec l'identifiant <code>id=&quot;XXXX_message&quot;</code> o&#249; <code>XXXX</code> est l'identifiant de la balise englobante. Dans cette balise <em>message</em>, on y met, si on le souhaite, un message &#224; afficher avant le chargement de l'animation; * une balise <code>div</code> avec l'identifiant <code>id=&quot;XXXX_boutons&quot;</code>.</p>
  55 <p>En supposant que les images SVG se trouvent dans un r&#233;pertoire nomm&#233; <code>svg</code>, voici un exemple d'une telle structure :</p>
  56 <div class="sourceCode"><pre class="sourceCode html"><code class="sourceCode html"><span class="kw">&lt;div</span><span class="ot"> id=</span><span class="st">&quot;anim1&quot;</span><span class="kw">&gt;</span>
  57   <span class="kw">&lt;img</span><span class="ot"> src=</span><span class="st">&quot;svg/ellipsographe-1.svg&quot;</span><span class="ot"> alt=</span><span class="st">&quot;animation1&quot;</span><span class="kw">/&gt;</span>
  58   <span class="kw">&lt;div</span><span class="ot"> class=</span><span class="st">&quot;message&quot;</span><span class="ot"> id=</span><span class="st">&quot;anim1_message&quot;</span><span class="kw">&gt;</span>Chargement<span class="kw">&lt;/div&gt;</span>
  59   <span class="kw">&lt;div</span><span class="ot"> id=</span><span class="st">&quot;anim1_boutons&quot;</span><span class="kw">&gt;&lt;/div&gt;</span>
  60 <span class="kw">&lt;/div&gt;</span></code></pre></div>
  61 <h3 id="c&#244;t&#233;-javascript">C&#244;t&#233; JavaScript</h3>
  62 <p>Une fois qu'on a la structure HTML pr&#233;sent&#233;e ci-dessus, il est n&#233;cessaire d'ajouter un peu de code JavaScript pour permettre &#224; l'animation de se jouer.</p>
  63 <h4 id="construire-lobjet-animation">Construire l'objet <code>Animation</code></h4>
  64 <p>Le <em>constructeur</em> du prototype JavaScript s'utilise, pour l'exemple donn&#233; &#224; la section pr&#233;c&#233;dente, de la fa&#231;on suivante :</p>
  65 <div class="sourceCode"><pre class="sourceCode javascript"><code class="sourceCode javascript"><span class="kw">var</span> anim <span class="op">=</span> <span class="kw">new</span> <span class="at">Animation</span>(<span class="st">&#39;XXXX&#39;</span><span class="op">,</span><span class="st">&#39;svg/ellipsographe-&#39;</span><span class="op">,</span><span class="dv">1</span><span class="op">,</span><span class="dv">91</span>)<span class="op">;</span>
  66 <span class="va">anim</span>.<span class="at">loopOnload</span>()<span class="op">;</span></code></pre></div>
  67 <p><code>XXXX</code> est l'identifiant de la balise <code>div</code> HTML <em>englobante</em>, <code>svg/ellipsographe-</code> est le pr&#233;fixe dont on a parl&#233; plus haut, <code>1</code> est l'indice de la premi&#232;re image &#224; animer, et <code>91</code> l'indice de la derni&#232;re.</p>
  68 <p><code>anim.loopOnload()</code> permet le chargement de l'animation.</p>
  69 <p>Une fois celle-ci charg&#233;e, il faut en permettre la lecture qui se fait gr&#226;ce &#224; un nouvel objet nomm&#233; <code>Controle</code>. Ce contr&#244;le s'utilise en fait comme ceci :</p>
  70 <div class="sourceCode"><pre class="sourceCode javascript"><code class="sourceCode javascript"><span class="kw">var</span> anim <span class="op">=</span> <span class="kw">new</span> <span class="at">Animation</span>(<span class="st">&#39;XXXX&#39;</span><span class="op">,</span><span class="st">&#39;svg/ellipsographe-&#39;</span><span class="op">,</span><span class="dv">1</span><span class="op">,</span><span class="dv">91</span>)<span class="op">;</span>
  71 <span class="va">anim</span>.<span class="at">loopOnload</span>()<span class="op">;</span>
  72 <span class="kw">var</span> player <span class="op">=</span> <span class="kw">new</span> <span class="at">Controle</span>(anim)<span class="op">;</span>
  73 <span class="va">player</span>.<span class="at">connect</span>()<span class="op">;</span></code></pre></div>
  74 <p>Nous verrons par la suite comment personnaliser le contr&#244;le de la lecture de l'animation.</p>
  75 <p>Tout ceci n'est toujours pas suffisant car il faut ex&#233;cuter ce code JavaScript. Ceci peut &#234;tre fait gr&#226;ce &#224; <code>JQuery</code> par exemple, en ex&#233;cutant ces quatre lignes de code &#224; l'ouverture de la fen&#234;tre :</p>
  76 <div class="sourceCode"><pre class="sourceCode javascript"><code class="sourceCode javascript"><span class="at">$</span>(window).<span class="at">load</span>(<span class="kw">function</span>() <span class="op">{</span>
  77     <span class="kw">var</span> anim <span class="op">=</span> <span class="kw">new</span> <span class="at">Animation</span>(<span class="st">&#39;XXXX&#39;</span><span class="op">,</span><span class="st">&#39;svg/ellipsographe-&#39;</span><span class="op">,</span><span class="dv">1</span><span class="op">,</span><span class="dv">91</span>)<span class="op">;</span>
  78     <span class="va">anim</span>.<span class="at">loopOnload</span>()<span class="op">;</span>
  79     <span class="kw">var</span> player <span class="op">=</span> <span class="kw">new</span> <span class="at">Controle</span>(anim)<span class="op">;</span>
  80     <span class="va">player</span>.<span class="at">connect</span>()<span class="op">;</span>
  81 <span class="op">}</span>)<span class="op">;</span></code></pre></div>
  82 <p>Bien s&#251;r, ceci n&#233;cessite le chargement, dans la page HTML, de la librairie <code>JQuery</code>.</p>
  83 <h4 id="le-r&#233;sultat">Le r&#233;sultat</h4>
  84 <p>Tout ceci donne le code suivant</p>
  85 <div class="sourceCode"><pre class="sourceCode html"><code class="sourceCode html"><span class="kw">&lt;script</span><span class="ot"> src=</span><span class="st">&quot;https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js&quot;</span><span class="kw">&gt;&lt;/script&gt;</span>
  86 <span class="kw">&lt;script</span><span class="ot"> type=</span><span class="st">&quot;text/javascript&quot;</span><span class="ot"> src=</span><span class="st">&quot;../SVGAnimation.js&quot;</span><span class="kw">&gt;&lt;/script&gt;</span>
  87 <span class="kw">&lt;script</span><span class="ot"> type=</span><span class="st">&quot;text/javascript&quot;</span><span class="kw">&gt;</span>
  88 <span class="at">$</span>(window).<span class="at">load</span>(<span class="kw">function</span>() <span class="op">{</span>
  89     <span class="kw">var</span> anim <span class="op">=</span> <span class="kw">new</span> <span class="at">Animation</span>(<span class="st">&#39;XXXX&#39;</span><span class="op">,</span><span class="st">&#39;svg/ellipsographe-&#39;</span><span class="op">,</span><span class="dv">1</span><span class="op">,</span><span class="dv">91</span>)<span class="op">;</span>
  90     <span class="va">anim</span>.<span class="at">loopOnload</span>()<span class="op">;</span>
  91     <span class="kw">var</span> player <span class="op">=</span> <span class="kw">new</span> <span class="at">Controle</span>(anim)<span class="op">;</span>
  92     <span class="va">player</span>.<span class="at">connect</span>()<span class="op">;</span>
  93 <span class="op">}</span>)<span class="op">;</span>
  94 <span class="op">&lt;</span><span class="ss">/script&gt;</span>
  95 <span class="ss">&lt;!--</span><span class="sc">[...]</span><span class="ss">--&gt;</span>
  96 <span class="ss">&lt;div id=&quot;XXXX&quot;&gt;</span>
  97 <span class="ss">  &lt;img src=&quot;svg/ellipsographe</span><span class="fl">-1.</span>svg<span class="st">&quot; alt=&quot;</span>animation1<span class="st">&quot;/&gt;</span>
  98   <span class="op">&lt;</span>div <span class="kw">class</span><span class="op">=</span><span class="st">&quot;message&quot;</span> id<span class="op">=</span><span class="st">&quot;XXXX_message&quot;</span><span class="op">&gt;</span><span class="va">Chargement</span>...<span class="op">&lt;</span><span class="ss">/div&gt;</span>
  99 <span class="ss">  &lt;div id=&quot;XXXX_boutons&quot;&gt;&lt;/div</span><span class="op">&gt;</span>
 100 <span class="op">&lt;</span><span class="ss">/div&gt;</span></code></pre></div>
 101 <p>dont l'affichage est :</p>
 102 <div id="XXXX">
 103 <img src="../ellipsographe/svg/ellipsographe-1.svg" alt="animation1"/>
 104 <div id="XXXX_message" class="message">
 105 Chargement...
 106 </div>
 107 <div id="XXXX_boutons">
 108
 109 </div>
 110 </div>
 111 <p>Il est possible de diff&#233;rer le chargement de l'animation en cr&#233;ant une fonction Javascript.</p>
 112 <div class="sourceCode"><pre class="sourceCode javascript"><code class="sourceCode javascript"><span class="kw">function</span> <span class="at">charge_anim2</span>() <span class="op">{</span>
 113   <span class="kw">var</span> a <span class="op">=</span> <span class="kw">new</span> <span class="at">Animation</span>(<span class="st">&#39;anim2&#39;</span><span class="op">,</span><span class="st">&#39;svg/ellipsographe-&#39;</span><span class="op">,</span><span class="dv">1</span><span class="op">,</span><span class="dv">91</span>)<span class="op">;</span>
 114   <span class="va">a</span>.<span class="at">loopOnload</span>()<span class="op">;</span>
 115   <span class="kw">var</span> b <span class="op">=</span> <span class="kw">new</span> <span class="at">Controle</span>(a)<span class="op">;</span>
 116   <span class="va">b</span>.<span class="at">connect</span>()<span class="op">;</span>
 117 <span class="op">}</span></code></pre></div>
 118 <p>Fonction qui sera li&#233;e &#224; l'<em>&#233;v&#233;nement</em> <code>onclick</code> d'un bouton proposant, &#224; l'internaute, le chargement de l'animation...</p>
 119 <div class="sourceCode"><pre class="sourceCode html"><code class="sourceCode html"><span class="kw">&lt;div</span><span class="ot"> id=</span><span class="st">&quot;anim2&quot;</span>
 120 <span class="ot">  style=</span><span class="st">&quot;margin:10px auto;padding:10px;width:354px;border:2px solid #AAA;border-radius:4px&quot;</span><span class="kw">&gt;</span>
 121  <span class="kw">&lt;img</span><span class="ot"> src=</span><span class="st">&quot;../ellipsographe/svg/ellipsographe-1.svg&quot;</span><span class="ot"> alt=</span><span class="st">&quot;animation1&quot;</span><span class="ot"> style=</span><span class="st">&quot;width:330px;height:240px&quot;</span><span class="kw">/&gt;</span>
 122  <span class="kw">&lt;div</span><span class="ot"> class=</span><span class="st">&quot;message&quot;</span><span class="ot"> id=</span><span class="st">&quot;anim2_message&quot;</span><span class="kw">&gt;</span>Ellipsographe<span class="kw">&lt;/div&gt;</span>
 123  <span class="kw">&lt;div</span><span class="ot"> id=</span><span class="st">&quot;anim2_boutons&quot;</span><span class="kw">&gt;&lt;button</span><span class="ot"> onclick=</span><span class="st">&quot;charge_anim2();&quot;</span><span class="kw">&gt;</span>Charger l&#39;animation<span class="kw">&lt;/button&gt;&lt;/div&gt;</span>
 124 <span class="kw">&lt;/div&gt;</span></code></pre></div>
 125 <p>On peut en profiter pour adapter le <em>style</em> des &#233;l&#233;ments englobants.</p>
 126 <div id="anim2" style="margin:10px auto;padding:10px;width:350px;border:2px solid #AAA;border-radius:4px">
 127 <img src="../ellipsographe/svg/ellipsographe-1.svg" alt="animation1" style="width:330px;height:240px"/>
 128 <div id="anim2_message" class="message">
 129 Ellipsographe
 130 </div>
 131 <div id="anim2_boutons">
 132 <button onclick="charge_anim2()">
 133 Charger l'animation
 134 </button>
 135 </div>
 136 </div>
 137 <h3 id="les-param&#232;tres">Les param&#232;tres</h3>
 138 <h2 id="les-players">Les <em>players</em></h2>
 139 <h3 id="svgplayerone.js"><code>SVGPlayerOne.js</code></h3>
 140 <h3 id="svgplayerbuttons.js"><code>SVGPlayerButtons.js</code></h3>
 141 <h2 id="exemples-dutilisation">Exemples d'utilisation</h2>
 142 </div>
 143 <div id="TDM" class="tdm">
 144 <div style="text-align:center">
 145   <a href="javascript:tdmgauche();">&larr;</a>&nbsp;<b>Sections</b>&nbsp;<a href="javascript:tdmdroite();">&rarr;</a>
 146 </div>
 147  <ul>
 148  <li><a href="#installation">Installation</a></li>
 149  <li><a href="#principe">Principe</a><ul>
 150  <li><a href="#la-famille-dimages">La famille d'images</a></li>
 151  </ul></li>
 152  <li><a href="#lutilisation">L'utilisation</a><ul>
 153  <li><a href="#c&#244;t&#233;-html">C&#244;t&#233; HTML</a></li>
 154  <li><a href="#c&#244;t&#233;-javascript">C&#244;t&#233; JavaScript</a></li>
 155  <li><a href="#les-param&#232;tres">Les param&#232;tres</a></li>
 156  </ul></li>
 157  <li><a href="#les-players">Les <em>players</em></a><ul>
 158  <li><a href="#svgplayerone.js"><code>SVGPlayerOne.js</code></a></li>
 159  <li><a href="#svgplayerbuttons.js"><code>SVGPlayerButtons.js</code></a></li>
 160  </ul></li>
 161  <li><a href="#exemples-dutilisation">Exemples d'utilisation</a></li>
 162  </ul>
 163 </div>
 164 <div style="clear:both"></div>