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author | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:42:52 -0500 |
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committer | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:42:52 -0500 |
commit | 074785cea106179cb3305637055ab0a009ca74f2 (patch) | |
tree | e6ae371cccd642aa2b67f39752a2cdf1fd4eb040 /files/pt-br/web/api/canvasrenderingcontext2d/closepath | |
parent | da78a9e329e272dedb2400b79a3bdeebff387d47 (diff) | |
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Diffstat (limited to 'files/pt-br/web/api/canvasrenderingcontext2d/closepath')
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diff --git a/files/pt-br/web/api/canvasrenderingcontext2d/closepath/index.html b/files/pt-br/web/api/canvasrenderingcontext2d/closepath/index.html new file mode 100644 index 0000000000..62c72086f7 --- /dev/null +++ b/files/pt-br/web/api/canvasrenderingcontext2d/closepath/index.html @@ -0,0 +1,170 @@ +--- +title: CanvasRenderingContext2D.closePath() +slug: Web/API/CanvasRenderingContext2D/closePath +tags: + - API + - Canvas + - CanvasRenderingContext2D + - Referencia + - metodo +translation_of: Web/API/CanvasRenderingContext2D/closePath +--- +<div>{{APIRef}}</div> + +<p>O método <code><strong>CanvasRenderingContext2D</strong></code><strong><code>.closePath()</code></strong> da API Canvas 2D faz o ponto da caneta (<em>pen</em>) mover-se de volta para o início do sub-caminho (<em>sub-path</em>) atual. Tenta adicionar uma nova linha (mas não a desenha realmente) que conecta o ponto atual até o ponto inicial. Se a região (<em>shape</em>) já estiver fechada, ou tem somente um ponto na tela, esta função não funciona.</p> + +<h2 id="Sintaxe">Sintaxe</h2> + +<pre class="syntaxbox">void <var><em>ctx</em>.closePath();</var> +</pre> + +<h2 id="Exemplos">Exemplos</h2> + +<h3 id="Usando_o_método_beginPath">Usando o método <code>beginPath</code></h3> + +<p>Isto é só um simples trecho de código que usa o método <code>fillRect</code>.</p> + +<h4 id="HTML">HTML</h4> + +<pre class="brush: html"><canvas id="canvas"></canvas> +</pre> + +<h4 id="JavaScript">JavaScript</h4> + +<pre class="brush: js; highlight:[8]">var canvas = document.getElementById('canvas'); +var ctx = canvas.getContext('2d'); + +ctx.beginPath(); +ctx.moveTo(20, 20); +ctx.lineTo(200, 20); +ctx.lineTo(120, 120); +ctx.closePath(); // desenha a última linha do triângulo +ctx.stroke(); +</pre> + +<p>Edite o código abaixo e veja as alterações instantâneas no canvas:</p> + +<div style="display: none;"> +<h6 id="Playable_code">Playable code</h6> + +<pre class="brush: html"><canvas id="canvas" width="400" height="200" class="playable-canvas"></canvas> +<div class="playable-buttons"> + <input id="edit" type="button" value="Edit" /> + <input id="reset" type="button" value="Reset" /> +</div> +<textarea id="code" class="playable-code" style="height:140px;"> +ctx.beginPath(); +ctx.moveTo(20,20); +ctx.lineTo(200,20); +ctx.lineTo(120,120); +ctx.closePath(); // draws last line of the triangle +ctx.stroke();</textarea> +</pre> + +<pre class="brush: js">var canvas = document.getElementById("canvas"); +var ctx = canvas.getContext("2d"); +var textarea = document.getElementById("code"); +var reset = document.getElementById("reset"); +var edit = document.getElementById("edit"); +var code = textarea.value; + +function drawCanvas() { + ctx.clearRect(0, 0, canvas.width, canvas.height); + eval(textarea.value); +} + +reset.addEventListener("click", function() { + textarea.value = code; + drawCanvas(); +}); + +edit.addEventListener("click", function() { + textarea.focus(); +}) + +textarea.addEventListener("input", drawCanvas); +window.addEventListener("load", drawCanvas); +</pre> +</div> + +<p>{{ EmbedLiveSample('Playable_code', 700, 400) }}</p> + +<h2 id="Especificações">Especificações</h2> + +<table class="standard-table"> + <tbody> + <tr> + <th scope="col">Especificação</th> + <th scope="col">Estado</th> + <th scope="col">Comentário</th> + </tr> + <tr> + <td>{{SpecName('HTML WHATWG', "scripting.html#dom-context-2d-closepath", "CanvasRenderingContext2D.closePath")}}</td> + <td>{{Spec2('HTML WHATWG')}}</td> + <td> </td> + </tr> + </tbody> +</table> + +<h2 id="Compatibilidade_em_Navegadores">Compatibilidade em Navegadores</h2> + +<p>{{CompatibilityTable}}</p> + +<div id="compat-desktop"> +<table class="compat-table"> + <tbody> + <tr> + <th>Característica</th> + <th>Chrome</th> + <th>Edge</th> + <th>Firefox (Gecko)</th> + <th>Internet Explorer</th> + <th>Opera</th> + <th>Safari</th> + </tr> + <tr> + <td>Suporte básico</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + </tr> + </tbody> +</table> +</div> + +<div id="compat-mobile"> +<table class="compat-table"> + <tbody> + <tr> + <th>Característica</th> + <th>Android</th> + <th>Chrome para Android</th> + <th>Edge</th> + <th>Firefox Mobile (Gecko)</th> + <th>IE Mobile</th> + <th>Opera Mobile</th> + <th>Safari Mobile</th> + </tr> + <tr> + <td>Suporte básico</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + </tr> + </tbody> +</table> +</div> + +<h2 id="Veja_também">Veja também</h2> + +<ul> + <li>A definição da interface {{domxref("CanvasRenderingContext2D")}}</li> + <li>{{domxref("CanvasRenderingContext2D.beginPath()")}}</li> +</ul> |