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Saiba mais e junte-se à comunidade MDN Web Docs.</a></p></div></div><div class="main-wrapper"><div class="sidebar-container"><aside id="sidebar-quicklinks" class="sidebar" data-macro="DefaultAPISidebar"><button type="button" class="button action backdrop" aria-label="Collapse sidebar"><span class="button-wrap"></span></button><nav aria-label="Related Topics" class="sidebar-inner"><header class="sidebar-actions"><section class="sidebar-filter-container"><div class="sidebar-filter "><label id="sidebar-filter-label" class="sidebar-filter-label" for="sidebar-filter-input"><span class="icon icon-filter"></span><span class="visually-hidden">Filter sidebar</span></label><input id="sidebar-filter-input" autoComplete="off" class="sidebar-filter-input-field false" type="text" placeholder="Filter" value=""/><button type="button" class="button action has-icon clear-sidebar-filter-button"><span class="button-wrap"><span class="icon icon-cancel "></span><span class="visually-hidden">Clear filter input</span></span></button></div></section></header><div class="sidebar-inner-nav"><div class="in-nav-toc"><div class="document-toc-container"><section class="document-toc"><header><h2 class="document-toc-heading">Neste artigo</h2></header><ul class="document-toc-list"><li class="document-toc-item "><a class="document-toc-link" href="#exemplo_básico">Exemplo básico</a></li><li class="document-toc-item "><a class="document-toc-link" href="#referência">Referência</a></li><li class="document-toc-item "><a class="document-toc-link" href="#guias_e_tutoriais">Guias e Tutoriais</a></li><li class="document-toc-item "><a class="document-toc-link" href="#bibliotecas">Bibliotecas</a></li><li class="document-toc-item "><a class="document-toc-link" href="#especificações">Especificações</a></li><li class="document-toc-item "><a class="document-toc-link" href="#compatibilidade_com_navegadores">Compatibilidade com navegadores</a></li><li class="document-toc-item "><a class="document-toc-link" href="#ver_também">Ver também</a></li></ul></section></div></div><div class="sidebar-body"><ol><li class="section"><em><a href="/pt-BR/docs/Web/API/Canvas_API" aria-current="page">Canvas API</a></em></li><li class="toggle"><details open=""><summary>Guias</summary><ol><li><a href="/pt-BR/docs/Web/API/Canvas_API/Manipulating_video_using_canvas">Manipulating video using canvas</a></li></ol></details></li><li class="toggle"><details open=""><summary>Tutorial</summary><ol><li><a href="/pt-BR/docs/Web/API/Canvas_API/Tutorial">Canvas tutorial</a></li><li><a href="/pt-BR/docs/Web/API/Canvas_API/Tutorial/Basic_usage">Utilização básica do Canvas</a></li><li><a href="/pt-BR/docs/Web/API/Canvas_API/Tutorial/Drawing_shapes">Desenhando formas com canvas</a></li><li><a href="/pt-BR/docs/Web/API/Canvas_API/Tutorial/Applying_styles_and_colors">Aplicando estilos e cores</a></li><li><a href="/pt-BR/docs/Web/API/Canvas_API/Tutorial/Drawing_text">Drawing text</a></li><li><a href="/pt-BR/docs/Web/API/Canvas_API/Tutorial/Using_images">Using images</a></li><li><a href="/pt-BR/docs/Web/API/Canvas_API/Tutorial/Transformations">Transformations</a></li><li><a href="/pt-BR/docs/Web/API/Canvas_API/Tutorial/Compositing">Compositing and clipping</a></li><li><a href="/pt-BR/docs/Web/API/Canvas_API/Tutorial/Basic_animations">Basic animations</a></li><li><a href="/pt-BR/docs/Web/API/Canvas_API/Tutorial/Advanced_animations">Advanced animations</a></li><li><a href="/pt-BR/docs/Web/API/Canvas_API/Tutorial/Pixel_manipulation_with_canvas">Pixel manipulation with canvas</a></li><li><a href="/pt-BR/docs/Web/API/Canvas_API/Tutorial/Optimizing_canvas">Otimizando canvas</a></li><li><a href="/pt-BR/docs/Web/API/Canvas_API/Tutorial/Finale">Conclusão</a></li></ol></details></li><li class="toggle"><details open=""><summary>Interfaces</summary><ol><li><a href="/pt-BR/docs/Web/API/CanvasGradient"><code>CanvasGradient</code></a></li><li><a href="/pt-BR/docs/Web/API/CanvasPattern"><code>CanvasPattern</code></a></li><li><a href="/pt-BR/docs/Web/API/CanvasRenderingContext2D"><code>CanvasRenderingContext2D</code></a></li><li><a href="/pt-BR/docs/Web/API/HTMLCanvasElement"><code>HTMLCanvasElement</code></a></li><li><a href="/pt-BR/docs/Web/API/ImageBitmap"><code>ImageBitmap</code></a></li><li><a href="/pt-BR/docs/Web/API/ImageBitmapRenderingContext"><code>ImageBitmapRenderingContext</code></a></li><li><a href="/pt-BR/docs/Web/API/ImageData"><code>ImageData</code></a></li><li><a href="/pt-BR/docs/Web/API/OffscreenCanvas"><code>OffscreenCanvas</code></a></li><li><a href="/pt-BR/docs/Web/API/OffscreenCanvasRenderingContext2D"><code>OffscreenCanvasRenderingContext2D</code></a></li><li><a href="/pt-BR/docs/Web/API/Path2D"><code>Path2D</code></a></li><li><a href="/pt-BR/docs/Web/API/TextMetrics"><code>TextMetrics</code></a></li></ol></details></li><li class="toggle"><details open=""><summary>Métodos</summary><ol><li><a href="/pt-BR/docs/Web/API/Window/createImageBitmap"><code>Window.createImageBitmap()</code></a></li><li><a href="/pt-BR/docs/Web/API/WorkerGlobalScope/createImageBitmap"><code>WorkerGlobalScope.createImageBitmap()</code></a></li></ol></details></li></ol></div></div><section class="place side"></section></nav></aside><div class="toc-container"><aside class="toc"><nav><div class="document-toc-container"><section class="document-toc"><header><h2 class="document-toc-heading">Neste artigo</h2></header><ul class="document-toc-list"><li class="document-toc-item "><a class="document-toc-link" href="#exemplo_básico">Exemplo básico</a></li><li class="document-toc-item "><a class="document-toc-link" href="#referência">Referência</a></li><li class="document-toc-item "><a class="document-toc-link" href="#guias_e_tutoriais">Guias e Tutoriais</a></li><li class="document-toc-item "><a class="document-toc-link" href="#bibliotecas">Bibliotecas</a></li><li class="document-toc-item "><a class="document-toc-link" href="#especificações">Especificações</a></li><li class="document-toc-item "><a class="document-toc-link" href="#compatibilidade_com_navegadores">Compatibilidade com navegadores</a></li><li class="document-toc-item "><a class="document-toc-link" href="#ver_também">Ver também</a></li></ul></section></div></nav></aside><section class="place side"></section></div></div><main id="content" class="main-content "><article class="main-page-content" lang="pt-BR"><header><h1>Canvas</h1><details class="baseline-indicator high"><summary><span class="indicator" role="img" aria-label="Baseline Check"></span><h2>Baseline <span class="not-bold">Widely available</span></h2><div class="browsers"><span class="engine" title="Supported in Chrome and Edge"><span class="browser chrome supported" role="img" aria-label="Chrome check"></span><span class="browser edge supported" role="img" aria-label="Edge check"></span></span><span class="engine" title="Supported in Firefox"><span class="browser firefox supported" role="img" aria-label="Firefox check"></span></span><span class="engine" title="Supported in Safari"><span class="browser safari supported" role="img" aria-label="Safari check"></span></span></div><span class="icon icon-chevron "></span></summary><div class="extra"><p>This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.</p><ul><li><a href="/pt-BR/docs/Glossary/Baseline/Compatibility" data-glean="baseline_link_learn_more" target="_blank" class="learn-more">Learn more</a></li><li><a href="#compatibilidade_com_navegadores" data-glean="baseline_link_bcd_table">See full compatibility</a></li><li><a href="https://survey.alchemer.com/s3/7634825/MDN-baseline-feedback?page=%2Fpt-BR%2Fdocs%2FWeb%2FAPI%2FCanvas_API&level=high" data-glean="baseline_link_feedback" class="feedback-link" target="_blank" rel="noreferrer">Report feedback</a></li></ul></div></details></header><div class="section-content"><p>A <strong>Canvas API</strong> provê maneiras de desenhar gráficos via <a href="/pt-BR/docs/Web/JavaScript">JavaScript</a> e via elemento <a href="/pt-BR/docs/Web/HTML">HTML</a> <a href="/pt-BR/docs/Web/HTML/Element/canvas"><code><canvas></code></a>. Entre outras coisas, ele pode ser utilizado para animação, gráficos de jogos, visualização de dados, manipulação de fotos e processamento de vídeo em tempo real.</p> <p>A Canvas API foca amplamente em gráficos 2D. A <a href="/pt-BR/docs/Web/API/WebGL_API">WebGL API</a>, que também usa o elemento <code><canvas></code>, desenha gráficos 2D e 3D acelerados por hardware.</p></div><section aria-labelledby="exemplo_básico"><h2 id="exemplo_básico"><a href="#exemplo_básico">Exemplo básico</a></h2><div class="section-content"><p>Este exemplo simples desenha um retângulo verde para um canvas.</p></div></section><section aria-labelledby="html"><h3 id="html"><a href="#html">HTML</a></h3><div class="section-content"><div class="code-example"><div class="example-header"><span class="language-name">html</span></div><pre class="brush: html notranslate"><code><canvas id="canvas"></canvas> </code></pre></div></div></section><section aria-labelledby="javascript"><h3 id="javascript"><a href="#javascript">JavaScript</a></h3><div class="section-content"><p>O método <a href="/pt-BR/docs/Web/API/Document/getElementById"><code>Document.getElementById()</code></a> pega uma referência para o elemento HTML <code><canvas></code>. Em seguida, o método <a href="/pt-BR/docs/Web/API/HTMLCanvasElement/getContext"><code>HTMLCanvasElement.getContext()</code></a> pega o contexto daquele elemento - a coisa sobre a qual o desenho será renderizado.</p> <p>O desenho atual é feito usando a interface <a href="/pt-BR/docs/Web/API/CanvasRenderingContext2D"><code>CanvasRenderingContext2D</code></a>. A propriedade <a href="/pt-BR/docs/Web/API/CanvasRenderingContext2D/fillStyle" title="fillStyle"><code>fillStyle</code></a> faz o retângulo verde. O método <a href="/pt-BR/docs/Web/API/CanvasRenderingContext2D/fillRect" title="fillRect()"><code>fillRect()</code></a> coloca seu canto superior direito em (10, 10) e dá a ele o tamanho de 150 unidades de largura e 100 de altura.</p> <div class="code-example"><div class="example-header"><span class="language-name">js</span></div><pre class="brush: js notranslate"><code>const canvas = document.getElementById("canvas"); const ctx = canvas.getContext("2d"); ctx.fillStyle = "green"; ctx.fillRect(10, 10, 150, 100); </code></pre></div></div></section><section aria-labelledby="resultado"><h3 id="resultado"><a href="#resultado">Resultado</a></h3><div class="section-content"><div class="code-example"><div class="example-header"></div><iframe class="sample-code-frame" title="Exemplo básico sample" id="frame_exemplo_básico" width="700" height="180" src="about:blank" data-live-path="/pt-BR/docs/Web/API/Canvas_API" data-live-id="exemplo_básico" sandbox="allow-same-origin allow-scripts" loading="lazy"></iframe></div></div></section><section aria-labelledby="referência"><h2 id="referência"><a href="#referência">Referência</a></h2><div class="section-content"><ul> <li><a class="only-in-en-us" title="Esta página está disponível apenas em inglês no momento" href="/en-US/docs/Web/API/HTMLCanvasElement"><code>HTMLCanvasElement</code></a></li> <li><a href="/pt-BR/docs/Web/API/CanvasRenderingContext2D"><code>CanvasRenderingContext2D</code></a></li> <li><a class="only-in-en-us" title="Esta página está disponível apenas em inglês no momento" href="/en-US/docs/Web/API/CanvasGradient"><code>CanvasGradient</code></a></li> <li><a class="only-in-en-us" title="Esta página está disponível apenas em inglês no momento" href="/en-US/docs/Web/API/CanvasRenderingContext2D"><code>CanvasImageSource</code></a></li> <li><a class="only-in-en-us" title="Esta página está disponível apenas em inglês no momento" href="/en-US/docs/Web/API/CanvasPattern"><code>CanvasPattern</code></a></li> <li><a class="only-in-en-us" title="Esta página está disponível apenas em inglês no momento" href="/en-US/docs/Web/API/ImageBitmap"><code>ImageBitmap</code></a></li> <li><a class="only-in-en-us" title="Esta página está disponível apenas em inglês no momento" href="/en-US/docs/Web/API/ImageData"><code>ImageData</code></a></li> <li><a class="page-not-created" title="A documentação sobre isto ainda não foi escrita; por favor considere contribuir!"><code>RenderingContext</code></a></li> <li><a class="only-in-en-us" title="Esta página está disponível apenas em inglês no momento" href="/en-US/docs/Web/API/TextMetrics"><code>TextMetrics</code></a></li> <li><a class="only-in-en-us" title="Esta página está disponível apenas em inglês no momento" href="/en-US/docs/Web/API/OffscreenCanvas"><code>OffscreenCanvas</code></a> <abbr class="icon icon-experimental" title="Experimental. Expect behavior to change in the future."> <span class="visually-hidden">Experimental</span> </abbr></li> <li><a href="/pt-BR/docs/Web/API/Path2D"><code>Path2D</code></a> <abbr class="icon icon-experimental" title="Experimental. Expect behavior to change in the future."> <span class="visually-hidden">Experimental</span> </abbr></li> <li><a class="only-in-en-us" title="Esta página está disponível apenas em inglês no momento" href="/en-US/docs/Web/API/ImageBitmapRenderingContext"><code>ImageBitmapRenderingContext</code></a> <abbr class="icon icon-experimental" title="Experimental. Expect behavior to change in the future."> <span class="visually-hidden">Experimental</span> </abbr></li> </ul> <div class="notecard note"> <p><strong>Nota:</strong> As interfaces relacionadas ao <code>WebGLRenderingContext</code> são referenciadas sob <a href="/pt-BR/docs/Web/API/WebGL_API">WebGL</a>.</p> </div> <p><a class="only-in-en-us" title="Esta página está disponível apenas em inglês no momento" href="/en-US/docs/Web/API/CanvasCaptureMediaStreamTrack"><code>CanvasCaptureMediaStream</code></a> é uma interface relacionada.</p></div></section><section aria-labelledby="guias_e_tutoriais"><h2 id="guias_e_tutoriais"><a href="#guias_e_tutoriais">Guias e Tutoriais</a></h2><div class="section-content"><dl> <dt id="tutorial_canvas"><a href="/pt-BR/docs/Web/API/Canvas_API/Tutorial">Tutorial Canvas</a></dt> <dd> <p>Um tutorial compreensivo abordando o uso básico da API de Canvas e suas funcionalidades avançadas.</p> </dd> <dt id="mergulhando_no_canvas_html5"><a href="https://joshondesign.com/p/books/canvasdeepdive/title.html" class="external" target="_blank">Mergulhando no Canvas HTML5</a></dt> <dd> <p>Uma introdução prática e extensa à API Canvas e WebGL.</p> </dd> <dt id="guia_canvas"><a href="https://bucephalus.org/text/CanvasHandbook/CanvasHandbook.html" class="external" target="_blank">Guia Canvas</a></dt> <dd> <p>Uma referência acessível para a API Canvas.</p> </dd> <dt id="demonstração_um_ray-caster_básico"><a class="page-not-created" title="A documentação sobre isto ainda não foi escrita; por favor considere contribuir!" data-href="/pt-BR/docs/Web/API/Canvas_API/A_basic_ray-caster">Demonstração: Um <em>ray-caster</em> básico</a></dt> <dd> <p>Uma demonstração de animação <em>ray-tracing</em> usando canvas.</p> </dd> <dt id="manipulando_vídeos_usando_canvas"><a href="/en-US/docs/Web/API/Canvas_API/Manipulating_video_using_canvas" class="only-in-en-us" title="Esta página está disponível apenas em inglês no momento">Manipulando vídeos usando canvas</a></dt> <dd> <p>Combinando <a href="/pt-BR/docs/Web/HTML/Element/video"><code><video></code></a> e <a href="/pt-BR/docs/Web/HTML/Element/canvas"><code><canvas></code></a> para manipular dados de vídeo em tempo real.</p> </dd> </dl></div></section><section aria-labelledby="bibliotecas"><h2 id="bibliotecas"><a href="#bibliotecas">Bibliotecas</a></h2><div class="section-content"><p>A API Canvas é extremamente poderosa, mas nem sempre é simples de usar. As bibliotecas listadas abaixo podem fazer a criação de projetos baseados em canvas mais rápida e fácil.</p> <ul> <li><a href="https://www.createjs.com/easeljs" class="external" target="_blank">EaselJS</a> é uma biblioteca de código aberto que facilita criações de jogos, arte generativa e outras experiências altamente gráficas.</li> <li><a href="http://fabricjs.com/" class="external" target="_blank">Fabric.js</a> é uma biblioteca código aberto em canvas com suporte à SVG.</li> <li><a href="https://www.patrick-wied.at/static/heatmapjs/" class="external" target="_blank">heatmap.js</a> é uma biblioteca de código aberto para criar mapas de calor (heatmaps) baseados em canvas.</li> <li><a href="https://thejit.org/" class="external" target="_blank">JavaScript InfoVis Toolkit</a> cria visualizações de dados interativas.</li> <li><a href="https://konvajs.github.io/" class="external" target="_blank">Konva.js</a> é uma biblioteca de canvas 2D para aplicações <em>desktop</em> e móveis.</li> <li><a href="https://p5js.org/" class="external" target="_blank">p5.js</a> tem um conjunto completo de funcionalidades de desenho canvas para artistas, <em>designers</em>, educadores e iniciantes.</li> <li><a href="http://paperjs.org/" class="external" target="_blank">Paper.js</a> é um framework de código-aberto para scripting de vetores gŕaficos que funciona sobre o Canvas HTML5.</li> <li><a href="https://phaser.io/" class="external" target="_blank">Phaser</a> é um framework de código-aberto rápido, grátis e divertido para jogos de navegador desenvolvidos com Canvas e WebGL.</li> <li><a href="https://processingjs.org/" class="external" target="_blank">Processing.js</a> é um conversor da linguagem de visualização Processing.</li> <li><a href="https://ptsjs.org/" class="external" target="_blank">Pts.js</a> é uma biblioteca para codificação criativa e visualização em canvas e SVG.</li> <li><a href="https://github.com/jeremyckahn/rekapi" class="external" target="_blank">Rekapi</a> é uma API de animação <em>key-framing</em> para Canvas.</li> <li><a href="https://scrawl.rikweb.org.uk/" class="external" target="_blank">Scrawl-canvas</a> é uma biblioteca JavaScript de código aberto para criação e manipulação de elementos canvas 2D.</li> <li>O framework <a href="https://zimjs.com/" class="external" target="_blank">ZIM</a> provê conveniências, componentes e controles para programar criatividade no canvas - inclui acessibilidade e centenas de tutoriais cheios de cores.</li> </ul> <div class="notecard note"> <p><strong>Nota:</strong> Veja a <a href="/pt-BR/docs/Web/API/WebGL_API">WebGL API</a> para bibliotecas 2D e 3D que usam WebGL.</p> </div></div></section><h2 id="especificações"><a href="#especificações">Especificações</a></h2><table class="standard-table"><thead><tr><th scope="col">Specification</th></tr></thead><tbody><tr><td><a href="https://html.spec.whatwg.org/multipage/canvas.html#the-canvas-element">HTML Standard <br/><small># the-canvas-element</small></a></td></tr></tbody></table><h2 id="compatibilidade_com_navegadores"><a href="#compatibilidade_com_navegadores">Compatibilidade com navegadores</a></h2><p>BCD tables only load in the browser<noscript> with JavaScript enabled. 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Content available under <a href="/pt-BR/docs/MDN/Writing_guidelines/Attrib_copyright_license">a Creative Commons license</a>.</p></div></div></footer></div><script type="application/json" id="hydration">{"url":"/pt-BR/docs/Web/API/Canvas_API","doc":{"isMarkdown":true,"isTranslated":true,"isActive":true,"flaws":{},"title":"Canvas","mdn_url":"/pt-BR/docs/Web/API/Canvas_API","locale":"pt-BR","native":"Português (do Brasil)","browserCompat":["html.elements.canvas"],"baseline":{"baseline":"high","baseline_high_date":"2018-01-29","baseline_low_date":"2015-07-29","support":{"chrome":"1","chrome_android":"18","edge":"12","firefox":"1.5","firefox_android":"4","safari":"2","safari_ios":"1"}},"sidebarHTML":"<ol><li class=\"section\"><em><a href=\"/pt-BR/docs/Web/API/Canvas_API\" aria-current=\"page\">Canvas API</a></em></li><li class=\"toggle\"><details open=\"\"><summary>Guias</summary><ol><li><a href=\"/pt-BR/docs/Web/API/Canvas_API/Manipulating_video_using_canvas\">Manipulating video using canvas</a></li></ol></details></li><li class=\"toggle\"><details open=\"\"><summary>Tutorial</summary><ol><li><a href=\"/pt-BR/docs/Web/API/Canvas_API/Tutorial\">Canvas tutorial</a></li><li><a href=\"/pt-BR/docs/Web/API/Canvas_API/Tutorial/Basic_usage\">Utilização básica do Canvas</a></li><li><a href=\"/pt-BR/docs/Web/API/Canvas_API/Tutorial/Drawing_shapes\">Desenhando formas com canvas</a></li><li><a href=\"/pt-BR/docs/Web/API/Canvas_API/Tutorial/Applying_styles_and_colors\">Aplicando estilos e cores</a></li><li><a href=\"/pt-BR/docs/Web/API/Canvas_API/Tutorial/Drawing_text\">Drawing text</a></li><li><a href=\"/pt-BR/docs/Web/API/Canvas_API/Tutorial/Using_images\">Using images</a></li><li><a href=\"/pt-BR/docs/Web/API/Canvas_API/Tutorial/Transformations\">Transformations</a></li><li><a href=\"/pt-BR/docs/Web/API/Canvas_API/Tutorial/Compositing\">Compositing and clipping</a></li><li><a href=\"/pt-BR/docs/Web/API/Canvas_API/Tutorial/Basic_animations\">Basic animations</a></li><li><a href=\"/pt-BR/docs/Web/API/Canvas_API/Tutorial/Advanced_animations\">Advanced animations</a></li><li><a href=\"/pt-BR/docs/Web/API/Canvas_API/Tutorial/Pixel_manipulation_with_canvas\">Pixel manipulation with canvas</a></li><li><a href=\"/pt-BR/docs/Web/API/Canvas_API/Tutorial/Optimizing_canvas\">Otimizando canvas</a></li><li><a href=\"/pt-BR/docs/Web/API/Canvas_API/Tutorial/Finale\">Conclusão</a></li></ol></details></li><li class=\"toggle\"><details open=\"\"><summary>Interfaces</summary><ol><li><a href=\"/pt-BR/docs/Web/API/CanvasGradient\"><code>CanvasGradient</code></a></li><li><a href=\"/pt-BR/docs/Web/API/CanvasPattern\"><code>CanvasPattern</code></a></li><li><a href=\"/pt-BR/docs/Web/API/CanvasRenderingContext2D\"><code>CanvasRenderingContext2D</code></a></li><li><a href=\"/pt-BR/docs/Web/API/HTMLCanvasElement\"><code>HTMLCanvasElement</code></a></li><li><a href=\"/pt-BR/docs/Web/API/ImageBitmap\"><code>ImageBitmap</code></a></li><li><a href=\"/pt-BR/docs/Web/API/ImageBitmapRenderingContext\"><code>ImageBitmapRenderingContext</code></a></li><li><a href=\"/pt-BR/docs/Web/API/ImageData\"><code>ImageData</code></a></li><li><a href=\"/pt-BR/docs/Web/API/OffscreenCanvas\"><code>OffscreenCanvas</code></a></li><li><a href=\"/pt-BR/docs/Web/API/OffscreenCanvasRenderingContext2D\"><code>OffscreenCanvasRenderingContext2D</code></a></li><li><a href=\"/pt-BR/docs/Web/API/Path2D\"><code>Path2D</code></a></li><li><a href=\"/pt-BR/docs/Web/API/TextMetrics\"><code>TextMetrics</code></a></li></ol></details></li><li class=\"toggle\"><details open=\"\"><summary>Métodos</summary><ol><li><a href=\"/pt-BR/docs/Web/API/Window/createImageBitmap\"><code>Window.createImageBitmap()</code></a></li><li><a href=\"/pt-BR/docs/Web/API/WorkerGlobalScope/createImageBitmap\"><code>WorkerGlobalScope.createImageBitmap()</code></a></li></ol></details></li></ol>","sidebarMacro":"DefaultAPISidebar","body":[{"type":"prose","value":{"id":null,"title":null,"isH3":false,"content":"<p>A <strong>Canvas API</strong> provê maneiras de desenhar gráficos via <a href=\"/pt-BR/docs/Web/JavaScript\">JavaScript</a> e via elemento <a href=\"/pt-BR/docs/Web/HTML\">HTML</a> <a href=\"/pt-BR/docs/Web/HTML/Element/canvas\"><code><canvas></code></a>. Entre outras coisas, ele pode ser utilizado para animação, gráficos de jogos, visualização de dados, manipulação de fotos e processamento de vídeo em tempo real.</p>\n<p>A Canvas API foca amplamente em gráficos 2D. A <a href=\"/pt-BR/docs/Web/API/WebGL_API\">WebGL API</a>, que também usa o elemento <code><canvas></code>, desenha gráficos 2D e 3D acelerados por hardware.</p>"}},{"type":"prose","value":{"id":"exemplo_básico","title":"Exemplo básico","isH3":false,"content":"<p>Este exemplo simples desenha um retângulo verde para um canvas.</p>"}},{"type":"prose","value":{"id":"html","title":"HTML","isH3":true,"content":"<div class=\"code-example\"><div class=\"example-header\"><span class=\"language-name\">html</span></div><pre class=\"brush: html notranslate\"><code><canvas id=\"canvas\"></canvas>\n</code></pre></div>"}},{"type":"prose","value":{"id":"javascript","title":"JavaScript","isH3":true,"content":"<p>O método <a href=\"/pt-BR/docs/Web/API/Document/getElementById\"><code>Document.getElementById()</code></a> pega uma referência para o elemento HTML <code><canvas></code>. Em seguida, o método <a href=\"/pt-BR/docs/Web/API/HTMLCanvasElement/getContext\"><code>HTMLCanvasElement.getContext()</code></a> pega o contexto daquele elemento - a coisa sobre a qual o desenho será renderizado.</p>\n<p>O desenho atual é feito usando a interface <a href=\"/pt-BR/docs/Web/API/CanvasRenderingContext2D\"><code>CanvasRenderingContext2D</code></a>. A propriedade <a href=\"/pt-BR/docs/Web/API/CanvasRenderingContext2D/fillStyle\" title=\"fillStyle\"><code>fillStyle</code></a> faz o retângulo verde. O método <a href=\"/pt-BR/docs/Web/API/CanvasRenderingContext2D/fillRect\" title=\"fillRect()\"><code>fillRect()</code></a> coloca seu canto superior direito em (10, 10) e dá a ele o tamanho de 150 unidades de largura e 100 de altura.</p>\n<div class=\"code-example\"><div class=\"example-header\"><span class=\"language-name\">js</span></div><pre class=\"brush: js notranslate\"><code>const canvas = document.getElementById(\"canvas\");\nconst ctx = canvas.getContext(\"2d\");\n\nctx.fillStyle = \"green\";\nctx.fillRect(10, 10, 150, 100);\n</code></pre></div>"}},{"type":"prose","value":{"id":"resultado","title":"Resultado","isH3":true,"content":"<div class=\"code-example\"><div class=\"example-header\"></div><iframe class=\"sample-code-frame\" title=\"Exemplo básico sample\" id=\"frame_exemplo_básico\" width=\"700\" height=\"180\" src=\"about:blank\" data-live-path=\"/pt-BR/docs/Web/API/Canvas_API\" data-live-id=\"exemplo_básico\" sandbox=\"allow-same-origin allow-scripts\" loading=\"lazy\"></iframe></div>"}},{"type":"prose","value":{"id":"referência","title":"Referência","isH3":false,"content":"<ul>\n <li><a class=\"only-in-en-us\" title=\"Esta página está disponível apenas em inglês no momento\" href=\"/en-US/docs/Web/API/HTMLCanvasElement\"><code>HTMLCanvasElement</code></a></li>\n <li><a href=\"/pt-BR/docs/Web/API/CanvasRenderingContext2D\"><code>CanvasRenderingContext2D</code></a></li>\n <li><a class=\"only-in-en-us\" title=\"Esta página está disponível apenas em inglês no momento\" href=\"/en-US/docs/Web/API/CanvasGradient\"><code>CanvasGradient</code></a></li>\n <li><a class=\"only-in-en-us\" title=\"Esta página está disponível apenas em inglês no momento\" href=\"/en-US/docs/Web/API/CanvasRenderingContext2D\"><code>CanvasImageSource</code></a></li>\n <li><a class=\"only-in-en-us\" title=\"Esta página está disponível apenas em inglês no momento\" href=\"/en-US/docs/Web/API/CanvasPattern\"><code>CanvasPattern</code></a></li>\n <li><a class=\"only-in-en-us\" title=\"Esta página está disponível apenas em inglês no momento\" href=\"/en-US/docs/Web/API/ImageBitmap\"><code>ImageBitmap</code></a></li>\n <li><a class=\"only-in-en-us\" title=\"Esta página está disponível apenas em inglês no momento\" href=\"/en-US/docs/Web/API/ImageData\"><code>ImageData</code></a></li>\n <li><a class=\"page-not-created\" title=\"A documentação sobre isto ainda não foi escrita; por favor considere contribuir!\"><code>RenderingContext</code></a></li>\n <li><a class=\"only-in-en-us\" title=\"Esta página está disponível apenas em inglês no momento\" href=\"/en-US/docs/Web/API/TextMetrics\"><code>TextMetrics</code></a></li>\n <li><a class=\"only-in-en-us\" title=\"Esta página está disponível apenas em inglês no momento\" href=\"/en-US/docs/Web/API/OffscreenCanvas\"><code>OffscreenCanvas</code></a> <abbr class=\"icon icon-experimental\" title=\"Experimental. Expect behavior to change in the future.\">\n <span class=\"visually-hidden\">Experimental</span>\n</abbr></li>\n <li><a href=\"/pt-BR/docs/Web/API/Path2D\"><code>Path2D</code></a> <abbr class=\"icon icon-experimental\" title=\"Experimental. Expect behavior to change in the future.\">\n <span class=\"visually-hidden\">Experimental</span>\n</abbr></li>\n <li><a class=\"only-in-en-us\" title=\"Esta página está disponível apenas em inglês no momento\" href=\"/en-US/docs/Web/API/ImageBitmapRenderingContext\"><code>ImageBitmapRenderingContext</code></a> <abbr class=\"icon icon-experimental\" title=\"Experimental. Expect behavior to change in the future.\">\n <span class=\"visually-hidden\">Experimental</span>\n</abbr></li>\n</ul>\n<div class=\"notecard note\">\n <p><strong>Nota:</strong> As interfaces relacionadas ao <code>WebGLRenderingContext</code> são referenciadas sob <a href=\"/pt-BR/docs/Web/API/WebGL_API\">WebGL</a>.</p>\n</div>\n<p><a class=\"only-in-en-us\" title=\"Esta página está disponível apenas em inglês no momento\" href=\"/en-US/docs/Web/API/CanvasCaptureMediaStreamTrack\"><code>CanvasCaptureMediaStream</code></a> é uma interface relacionada.</p>"}},{"type":"prose","value":{"id":"guias_e_tutoriais","title":"Guias e Tutoriais","isH3":false,"content":"<dl>\n <dt id=\"tutorial_canvas\"><a href=\"/pt-BR/docs/Web/API/Canvas_API/Tutorial\">Tutorial Canvas</a></dt>\n <dd>\n <p>Um tutorial compreensivo abordando o uso básico da API de Canvas e suas funcionalidades avançadas.</p>\n </dd>\n <dt id=\"mergulhando_no_canvas_html5\"><a href=\"https://joshondesign.com/p/books/canvasdeepdive/title.html\" class=\"external\" target=\"_blank\">Mergulhando no Canvas HTML5</a></dt>\n <dd>\n <p>Uma introdução prática e extensa à API Canvas e WebGL.</p>\n </dd>\n <dt id=\"guia_canvas\"><a href=\"https://bucephalus.org/text/CanvasHandbook/CanvasHandbook.html\" class=\"external\" target=\"_blank\">Guia Canvas</a></dt>\n <dd>\n <p>Uma referência acessível para a API Canvas.</p>\n </dd>\n <dt id=\"demonstração_um_ray-caster_básico\"><a class=\"page-not-created\" title=\"A documentação sobre isto ainda não foi escrita; por favor considere contribuir!\" data-href=\"/pt-BR/docs/Web/API/Canvas_API/A_basic_ray-caster\">Demonstração: Um <em>ray-caster</em> básico</a></dt>\n <dd>\n <p>Uma demonstração de animação <em>ray-tracing</em> usando canvas.</p>\n </dd>\n <dt id=\"manipulando_vídeos_usando_canvas\"><a href=\"/en-US/docs/Web/API/Canvas_API/Manipulating_video_using_canvas\" class=\"only-in-en-us\" title=\"Esta página está disponível apenas em inglês no momento\">Manipulando vídeos usando canvas</a></dt>\n <dd>\n <p>Combinando <a href=\"/pt-BR/docs/Web/HTML/Element/video\"><code><video></code></a> e <a href=\"/pt-BR/docs/Web/HTML/Element/canvas\"><code><canvas></code></a> para manipular dados de vídeo em tempo real.</p>\n </dd>\n</dl>"}},{"type":"prose","value":{"id":"bibliotecas","title":"Bibliotecas","isH3":false,"content":"<p>A API Canvas é extremamente poderosa, mas nem sempre é simples de usar. As bibliotecas listadas abaixo podem fazer a criação de projetos baseados em canvas mais rápida e fácil.</p>\n<ul>\n <li><a href=\"https://www.createjs.com/easeljs\" class=\"external\" target=\"_blank\">EaselJS</a> é uma biblioteca de código aberto que facilita criações de jogos, arte generativa e outras experiências altamente gráficas.</li>\n <li><a href=\"http://fabricjs.com/\" class=\"external\" target=\"_blank\">Fabric.js</a> é uma biblioteca código aberto em canvas com suporte à SVG.</li>\n <li><a href=\"https://www.patrick-wied.at/static/heatmapjs/\" class=\"external\" target=\"_blank\">heatmap.js</a> é uma biblioteca de código aberto para criar mapas de calor (heatmaps) baseados em canvas.</li>\n <li><a href=\"https://thejit.org/\" class=\"external\" target=\"_blank\">JavaScript InfoVis Toolkit</a> cria visualizações de dados interativas.</li>\n <li><a href=\"https://konvajs.github.io/\" class=\"external\" target=\"_blank\">Konva.js</a> é uma biblioteca de canvas 2D para aplicações <em>desktop</em> e móveis.</li>\n <li><a href=\"https://p5js.org/\" class=\"external\" target=\"_blank\">p5.js</a> tem um conjunto completo de funcionalidades de desenho canvas para artistas, <em>designers</em>, educadores e iniciantes.</li>\n <li><a href=\"http://paperjs.org/\" class=\"external\" target=\"_blank\">Paper.js</a> é um framework de código-aberto para scripting de vetores gŕaficos que funciona sobre o Canvas HTML5.</li>\n <li><a href=\"https://phaser.io/\" class=\"external\" target=\"_blank\">Phaser</a> é um framework de código-aberto rápido, grátis e divertido para jogos de navegador desenvolvidos com Canvas e WebGL.</li>\n <li><a href=\"https://processingjs.org/\" class=\"external\" target=\"_blank\">Processing.js</a> é um conversor da linguagem de visualização Processing.</li>\n <li><a href=\"https://ptsjs.org/\" class=\"external\" target=\"_blank\">Pts.js</a> é uma biblioteca para codificação criativa e visualização em canvas e SVG.</li>\n <li><a href=\"https://github.com/jeremyckahn/rekapi\" class=\"external\" target=\"_blank\">Rekapi</a> é uma API de animação <em>key-framing</em> para Canvas.</li>\n <li><a href=\"https://scrawl.rikweb.org.uk/\" class=\"external\" target=\"_blank\">Scrawl-canvas</a> é uma biblioteca JavaScript de código aberto para criação e manipulação de elementos canvas 2D.</li>\n <li>O framework <a href=\"https://zimjs.com/\" class=\"external\" target=\"_blank\">ZIM</a> provê conveniências, componentes e controles para programar criatividade no canvas - inclui acessibilidade e centenas de tutoriais cheios de cores.</li>\n</ul>\n<div class=\"notecard note\">\n <p><strong>Nota:</strong> Veja a <a href=\"/pt-BR/docs/Web/API/WebGL_API\">WebGL API</a> para bibliotecas 2D e 3D que usam WebGL.</p>\n</div>"}},{"type":"specifications","value":{"title":"Especificações","id":"especificações","isH3":false,"specifications":[{"bcdSpecificationURL":"https://html.spec.whatwg.org/multipage/canvas.html#the-canvas-element","title":"HTML Standard"}],"query":"html.elements.canvas"}},{"type":"browser_compatibility","value":{"title":"Compatibilidade com navegadores","id":"compatibilidade_com_navegadores","isH3":false,"query":"html.elements.canvas"}},{"type":"prose","value":{"id":"ver_também","title":"Ver também","isH3":false,"content":"<ul>\n <li><a href=\"/pt-BR/docs/Web/API/WebGL_API\">WebGL</a></li>\n</ul>"}}],"toc":[{"text":"Exemplo básico","id":"exemplo_básico"},{"text":"Referência","id":"referência"},{"text":"Guias e Tutoriais","id":"guias_e_tutoriais"},{"text":"Bibliotecas","id":"bibliotecas"},{"text":"Especificações","id":"especificações"},{"text":"Compatibilidade com navegadores","id":"compatibilidade_com_navegadores"},{"text":"Ver também","id":"ver_também"}],"summary":"A Canvas API provê maneiras de desenhar gráficos via JavaScript e via elemento HTML <canvas>. Entre outras coisas, ele pode ser utilizado para animação, gráficos de jogos, visualização de dados, manipulação de fotos e processamento de vídeo em tempo real.","popularity":0,"modified":"2024-07-30T00:50:23.000Z","other_translations":[{"locale":"de","title":"Canvas API","native":"Deutsch"},{"locale":"en-US","title":"Canvas API","native":"English (US)"},{"locale":"es","title":"API Canvas","native":"Español"},{"locale":"fr","title":"API canvas","native":"Français"},{"locale":"ja","title":"キャンバス API","native":"日本語"},{"locale":"ko","title":"Canvas API","native":"한국어"},{"locale":"ru","title":"Canvas","native":"Русский"},{"locale":"zh-CN","title":"Canvas API","native":"中文 (简体)"},{"locale":"zh-TW","title":"Canvas API","native":"正體中文 (繁體)"}],"pageType":"unknown","source":{"folder":"pt-br/web/api/canvas_api","github_url":"https://github.com/mdn/translated-content/blob/main/files/pt-br/web/api/canvas_api/index.md","last_commit_url":"https://github.com/mdn/translated-content/commit/58237d8ebf368dd0cb5ab10001f66437dec3dcbb","filename":"index.md"},"short_title":"Canvas","parents":[{"uri":"/pt-BR/docs/Web","title":"Tecnologia Web para desenvolvedores"},{"uri":"/pt-BR/docs/Web/API","title":"APIs da Web"},{"uri":"/pt-BR/docs/Web/API/Canvas_API","title":"Canvas"}],"pageTitle":"Canvas - APIs da Web | MDN","noIndexing":false}}</script></body></html>