Plotador de forma de onda para qualidade do ar
Conclua um criador de formas de onda no cenário de qualidade do ar: com conteúdo real, controles acionáveis, feedback de estado claro e layout responsivo entre tamanhos.
É possível editar, executar e salvar este exemplo após ativar JavaScript. O código-fonte fixo é o seguinte:
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<html lang="pt-BR" dir="ltr">
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<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Plotador de forma de onda para qualidade do ar</title>
<style>
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<body data-aesthetic="playful" data-composition="gallery-frame">
<main class="page">
<header class="mast"><div><span class="eyebrow">playful / desenhador de formas de onda / ADVANCED</span><h1>Plotador de forma de onda para qualidade do ar</h1><p class="intro">Conclua um criador de formas de onda no cenário de qualidade do ar: com conteúdo real, controles acionáveis, feedback de estado claro e layout responsivo entre tamanhos.</p></div><span class="scenario">Qualidade do ar</span></header>
<figure class="composition-gallery"><section class="demo" aria-label="Área interativa do desenhador de forma de onda da qualidade do ar"><div class="workflow-dispatch"><aside class="dispatch-console"><span class="eyebrow">Qualidade do ar DISPATCH</span><h2>Painel de despacho das estações de ar</h2><form id="workflowDispatchForm"><label>Tipo de tarefa<select id="workflowDispatchKind"><option>estrada</option><option>Estação do Parque</option><option>Comunidade</option></select></label><label>AQI de referência<input id="workflowDispatchAmount" type="number" min="1" max="9999" value="45"><span>AQI</span></label><fieldset><legend>Prioridade de processamento</legend><label><input type="radio" name="workflowPriority" value="normal" checked>Padrão</label><label><input type="radio" name="workflowPriority" value="urgent">Urgente</label></fieldset><button class="action primary" type="submit">Iniciar monitoramento</button></form><label>Tarefa atual<select id="workflowDispatchActive" aria-label="Alternar tarefa atual"><option value="1">estrada</option><option value="2">Estação do Parque</option></select></label><output id="workflowDispatchSummary">Aguardando despacho</output></aside><section id="workflowCore" class="workflow-core dispatch-workbench" data-dispatch-priority="normal"><!-- 11DZ_CORE_START:drawing-data-viz-waveform --><div class="drawing-pattern drawing-pattern-9"><div class="canvas-shell"><canvas id="artboard" width="900" height="440" aria-label="Canvas do criador de formas de onda" aria-describedby="canvasDescription"></canvas><div class="canvas-tools panel"><span class="eyebrow">CANVAS MODE 10</span><h2>Desenhador de formas de onda</h2><label>Complexidade <input id="canvasAmount" type="range" min="4" max="28" value="37"></label><button id="redrawCanvas" class="action primary" type="button">Redesenhar</button><p id="canvasDescription" class="muted">Em uma tela escura, um desenhador de formas de onda é renderizado com duas cores de alto contraste, e o controle deslizante de complexidade determina o número de formas; a imagem é gerada inteiramente localmente no navegador.</p></div></div><section class="drawing-controller waveform-controller"><header><span class="eyebrow">SIGNAL DESK</span><h3>Sinal de forma de onda da qualidade do ar</h3></header><label>ganho de entrada<input id="waveformGain" type="range" min="20" max="180" value="100" data-core-bridge="drawing-data-viz-waveform"><output id="waveformGainValue">1.00×</output></label><label>Janela de observação<select id="waveformWindow"><option value="short">Janela curta</option><option value="medium" selected>Janela central</option><option value="long">Janela longa</option></select></label><button id="waveformFreeze" class="action" type="button" aria-pressed="false">Forma de onda congelada</button><output id="waveformReadout">Fluxo do sinal</output></section></div><!-- 11DZ_CORE_END --></section></div><p id="status" class="status" role="status" aria-live="polite"></p></section><figcaption class="gallery-caption"><strong>Qualidade do ar / GALLERY 03</strong></figcaption></figure>
</main>
<script>
'use strict';
const statusOutput = document.querySelector('#status');
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function random(){ drawSeed = (drawSeed * 1664525 + 1013904223) >>> 0; return drawSeed / 4294967296; }
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} context.globalCompositeOperation='source-over'; announce('O canvas foi gerado ' + count + ' elementos gráficos'); }
document.querySelector('#redrawCanvas').addEventListener('click',drawCanvas); amount.addEventListener('input',drawCanvas); addEventListener('resize',drawCanvas,{passive:true}); drawCanvas();
const waveformGain=document.querySelector('#waveformGain');const waveformWindow=document.querySelector('#waveformWindow');const waveformFreeze=document.querySelector('#waveformFreeze');const waveformState={gain:1,window:'medium',frozen:false,frames:0};function processWaveform(){waveformState.gain=Number(waveformGain.value)/100;waveformState.window=waveformWindow.value;document.querySelector('#waveformGainValue').textContent=waveformState.gain.toFixed(2)+'×';document.querySelector('#waveformReadout').textContent=(waveformState.frozen?'congelado':'Fluxo do sinal')+' · '+waveformState.window+' · quadro '+workflowSafeFrame();canvas.dataset.drawingFactor=String(waveformState.gain*({short:.7,medium:1,long:1.25}[waveformState.window]));canvas.dataset.drawingShift=String(waveformState.frames++);canvas.dataset.drawingBlend=waveformState.frozen?'source-over':'screen';drawCanvas();}function workflowSafeFrame(){return waveformState.frames%1000;}waveformGain.addEventListener('input',processWaveform);waveformWindow.addEventListener('change',processWaveform);waveformFreeze.addEventListener('click',()=>{waveformState.frozen=!waveformState.frozen;waveformFreeze.setAttribute('aria-pressed',String(waveformState.frozen));waveformFreeze.textContent=waveformState.frozen?'Continuar forma de onda':'Forma de onda congelada';processWaveform();announce(waveformState.frozen?'A forma de onda foi congelada':'A forma de onda continua sendo atualizada');});processWaveform();
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const workflowDispatchCore=document.querySelector('#workflowCore');const workflowDispatchForm=document.querySelector('#workflowDispatchForm');const workflowDispatchSelect=document.querySelector('#workflowDispatchActive');const workflowDispatchJobs=new Map([["1",{"label":"estrada","amount":12,"priority":"normal","touches":0}],["2",{"label":"Estação do Parque","amount":21,"priority":"urgent","touches":0}]]);let workflowDispatchSerial=workflowDispatchJobs.size;function workflowDispatchDrive(job,activate=false){workflowDispatchCore.dataset.dispatchPriority=job.priority;workflowDispatchCore.style.setProperty('--dispatch-load',Math.min(.95,.16+job.amount/120));const bridge=activate?workflowBridgeActivate():{changed:false,summary:workflowBridgeSummary()};document.querySelector('#workflowDispatchSummary').textContent=job.label+' · '+job.amount+' AQI · '+bridge.summary;announce('Tarefa atual da estação de ar:'+job.label);}function workflowDispatchRender(activeId,activate=false){workflowDispatchSelect.replaceChildren(...[...workflowDispatchJobs].map(([id,job])=>{const option=document.createElement('option');option.value=id;option.textContent=job.label+(job.priority==='urgent'?' · Urgente':'');return option;}));workflowDispatchSelect.value=activeId;workflowDispatchDrive(workflowDispatchJobs.get(activeId),activate);}workflowDispatchForm.addEventListener('submit',event=>{event.preventDefault();const data=new FormData(workflowDispatchForm);const id=String(++workflowDispatchSerial);workflowDispatchJobs.set(id,{label:document.querySelector('#workflowDispatchKind').value,amount:Math.max(1,Number(document.querySelector('#workflowDispatchAmount').value)||1),priority:data.get('workflowPriority'),touches:0});workflowDispatchRender(id,true);});workflowDispatchSelect.addEventListener('change',()=>workflowDispatchDrive(workflowDispatchJobs.get(workflowDispatchSelect.value),true));workflowDispatchCore.addEventListener('focusin',()=>{const job=workflowDispatchJobs.get(workflowDispatchSelect.value);if(!job)return;job.touches+=1;document.querySelector('#workflowDispatchSummary').textContent=job.label+' · '+job.amount+' AQI · '+workflowBridgeSummary();});workflowDispatchRender('1',false);
workflowBridgeReset();
</script>
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