Learning Progress Donut Chart
Complete the donut chart in the learning progress scene: includes real content, interactive controls, clear status feedback, and responsive layout across sizes.
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<title>Learning Progress Donut Chart</title>
<style>
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<body data-aesthetic="organic" data-composition="field-index">
<main class="page">
<header class="mast"><div><span class="eyebrow">organic / ring percentage chart / BEGINNER</span><h1>Learning Progress Donut Chart</h1><p class="intro">Complete the donut chart in the learning progress scene: includes real content, interactive controls, clear status feedback, and responsive layout across sizes.</p></div><span class="scenario">Learning Progress</span></header>
<div class="composition-index"><section class="demo" aria-label="Learning Progress Donut Chart Interactive Area"><div class="workflow-session"><header class="session-command"><div><span class="eyebrow">Learning Progress SESSION</span><h2>Learning cycle timer</h2></div><output id="workflowSessionClock">00:45</output><label>Round Duration<input id="workflowSessionLength" type="range" min="15" max="90" step="15" value="45"><span>sec</span></label><button id="workflowSessionToggle" class="action primary" type="button">Start reviewing</button></header><div id="workflowSessionProgress" role="progressbar" aria-label="Learning Cycle Progress" aria-valuemin="0" aria-valuemax="100" aria-valuenow="0"><i></i></div><section id="workflowCore" class="workflow-core session-stage" data-session-phase="ready" tabindex="-1"><!-- 11DZ_CORE_START:drawing-data-viz-donut-chart --><div class="drawing-pattern drawing-pattern-2"><div class="canvas-shell"><canvas id="artboard" width="900" height="440" aria-label="Donut Chart Canvas" aria-describedby="canvasDescription"></canvas><div class="canvas-tools panel"><span class="eyebrow">CANVAS MODE 3</span><h2>Donut chart</h2><label>Complexity <input id="canvasAmount" type="range" min="4" max="28" value="16"></label><button id="redrawCanvas" class="action primary" type="button">Redraw</button><p id="canvasDescription" class="muted">On a dark canvas, create a donut chart using two high-contrast colors; a complexity slider determines the number of shapes, and everything is generated locally in the browser.</p></div></div><form id="donutAllocationForm" class="drawing-controller donut-controller"><header><span class="eyebrow">RATIO WORKBENCH</span><h3>Learning Progress Allocation</h3></header><div class="donut-fields"><label>Core<input data-donut-share type="number" min="0" max="100" value="45"></label><label>Supported<input data-donut-share type="number" min="0" max="100" value="35"></label><label>Other<input data-donut-share type="number" min="0" max="100" value="20"></label></div><label>Inner Ring Size<input id="donutHole" type="range" min="25" max="75" value="52" data-core-bridge="drawing-data-viz-donut-chart"></label><button class="action" type="submit">Balanced proportions</button><output id="donutAllocationTotal">Total 100%</output></form></div><!-- 11DZ_CORE_END --></section><footer class="session-log"><strong id="workflowSessionScore">0 interaction checkpoints</strong><ol id="workflowSessionLaps" aria-label="Round Log"></ol></footer></div><p id="status" class="status" role="status" aria-live="polite"></p></section><aside class="index-mark" aria-hidden="true"><strong>05</strong><span>Learning Progress FIELD INDEX</span></aside></div>
</main>
<script>
'use strict';
const statusOutput = document.querySelector('#status');
const announce = message => { statusOutput.textContent = message; };
/* 11DZ_CORE_SCRIPT_START:drawing-data-viz-donut-chart */
const canvas = document.querySelector('#artboard'); const context = canvas.getContext('2d'); const amount = document.querySelector('#canvasAmount'); let drawSeed = 2401424583;
function random(){ drawSeed = (drawSeed * 1664525 + 1013904223) >>> 0; return drawSeed / 4294967296; }
function drawCanvas(){ const rect = canvas.getBoundingClientRect(); const ratio = Math.min(2,window.devicePixelRatio || 1); canvas.width = Math.max(320,Math.round(rect.width * ratio)); canvas.height = Math.max(240,Math.round(rect.height * ratio)); context.setTransform(ratio,0,0,ratio,0,0); const width = rect.width; const height = rect.height; context.clearRect(0,0,width,height); context.fillStyle = '#18314f'; context.fillRect(0,0,width,height); const drawingFactor=Number(canvas.dataset.drawingFactor||1); const count=Math.max(1,Math.round(Number(amount.value)*drawingFactor)); drawSeed += 1+Number(canvas.dataset.drawingShift||0); context.globalCompositeOperation=canvas.dataset.drawingBlend||'source-over';
for(let index=0; index<count; index+=1){ const x=random()*width; const y=random()*height; const size=(10+random()*70)*Math.max(.45,drawingFactor); context.beginPath(); context.strokeStyle=index%2?'#ff6b5e':'#71c9b5'; context.fillStyle=context.strokeStyle+'88'; context.lineWidth=(2+random()*4)*Math.max(.6,drawingFactor);
context.arc(width/2,height/2,35+index*4,index*.31,index*.31+.24); context.lineWidth=12; context.stroke();
} context.globalCompositeOperation='source-over'; announce('Canvas generated ' + count + ' graphic elements'); }
document.querySelector('#redrawCanvas').addEventListener('click',drawCanvas); amount.addEventListener('input',drawCanvas); addEventListener('resize',drawCanvas,{passive:true}); drawCanvas();
const donutShares=[...document.querySelectorAll('[data-donut-share]')];const donutHole=document.querySelector('#donutHole');let donutAllocation=donutShares.map(input=>Number(input.value));function renderDonutAllocation(){donutAllocation=donutShares.map(input=>Math.max(0,Number(input.value)||0));const total=donutAllocation.reduce((sum,value)=>sum+value,0);const hole=Number(donutHole.value);document.querySelector('#donutAllocationTotal').textContent='Total '+total+'% · Inner ring '+hole+'%';canvas.dataset.drawingFactor=String(.6+total/220);canvas.dataset.drawingShift=String(hole);canvas.dataset.drawingBlend=total===100?'screen':'source-over';drawCanvas();}donutShares.forEach(input=>input.addEventListener('input',renderDonutAllocation));donutHole.addEventListener('input',renderDonutAllocation);document.querySelector('#donutAllocationForm').addEventListener('submit',event=>{event.preventDefault();const equal=Math.floor(100/donutShares.length);donutShares.forEach((input,index)=>{input.value=String(index===donutShares.length-1?100-equal*(donutShares.length-1):equal);});renderDonutAllocation();announce('Donut chart proportions have been balanced to one hundred percent');});renderDonutAllocation();
/* 11DZ_CORE_SCRIPT_END */
const workflowBridgeSpec={"name":"drawing-data-viz-donut-chart","selector":"[data-core-bridge=\"drawing-data-viz-donut-chart\"]","mode":"range","key":"ArrowRight"};const workflowBridgeCore=document.querySelector('#workflowCore');const workflowBridgeControl=workflowBridgeCore.querySelector(workflowBridgeSpec.selector);if(!workflowBridgeControl)throw new Error('Missing core bridge: '+workflowBridgeSpec.name);const workflowBridgeControlledId=workflowBridgeControl.getAttribute('aria-controls');const workflowBridgeControlled=workflowBridgeControlledId?document.getElementById(workflowBridgeControlledId):null;workflowBridgeCore.dataset.workflowBridge=workflowBridgeSpec.name;workflowBridgeCore.dataset.workflowVersion='0';function workflowBridgeSerialize(){const visualNode=workflowBridgeCore.firstElementChild||workflowBridgeCore;const visual=getComputedStyle(visualNode);const outputs=[...workflowBridgeCore.querySelectorAll('output,[role="status"],[aria-live],meter,progress')].map(node=>node.textContent.trim()+'|'+node.getAttribute('aria-valuenow')+'|'+node.getAttribute('value'));const canvas=[...workflowBridgeCore.querySelectorAll('canvas')].map(node=>{try{return node.toDataURL().slice(-160);}catch{return 'canvas-unavailable';}});return JSON.stringify({html:workflowBridgeCore.innerHTML,status:statusOutput.textContent,outputs,canvas,visual:[visual.display,visual.visibility,visual.opacity,visual.transform,visual.filter,visual.backgroundColor,visual.width,visual.height],scroll:workflowBridgeSpec.mode==='scroll'?workflowBridgeControl.scrollTop:null});}let workflowBridgeLastEffect=workflowBridgeSerialize();function workflowBridgeSummary(){const label=(workflowBridgeControl.getAttribute('aria-label')||workflowBridgeControl.textContent||workflowBridgeControl.value||workflowBridgeSpec.name).trim().replace(/\s+/g,' ').slice(0,72);return label+' · Core Version '+workflowBridgeCore.dataset.workflowVersion;}function workflowBridgeCommit(){const effect=workflowBridgeSerialize();if(effect===workflowBridgeLastEffect)return {changed:false,summary:workflowBridgeSummary()};workflowBridgeLastEffect=effect;workflowBridgeCore.dataset.workflowVersion=String(Number(workflowBridgeCore.dataset.workflowVersion||0)+1);return {changed:true,summary:workflowBridgeSummary()};}function workflowBridgeScheduleCommit(){queueMicrotask(workflowBridgeCommit);setTimeout(workflowBridgeCommit,0);}workflowBridgeControl.addEventListener("input",workflowBridgeScheduleCommit);workflowBridgeControl.addEventListener('change',workflowBridgeScheduleCommit);const workflowBridgeStateTargets=new Set(workflowBridgeCore.querySelectorAll('dialog'));if(workflowBridgeControlled&&workflowBridgeCore.contains(workflowBridgeControlled))workflowBridgeStateTargets.add(workflowBridgeControlled);workflowBridgeStateTargets.forEach(target=>['close','cancel','toggle'].forEach(eventName=>target.addEventListener(eventName,workflowBridgeScheduleCommit)));function workflowBridgeActivate(){workflowBridgeControl.focus();const step=Number(workflowBridgeControl.step)||1;const min=workflowBridgeControl.min===''?-Infinity:Number(workflowBridgeControl.min);const max=workflowBridgeControl.max===''?Infinity:Number(workflowBridgeControl.max);let next=Math.min(max,Math.max(min,(Number(workflowBridgeControl.value)||0)+step));if(next===Number(workflowBridgeControl.value))next=Math.max(min,Number(workflowBridgeControl.value)-step);workflowBridgeControl.value=String(next);workflowBridgeControl.dispatchEvent(new Event('input',{bubbles:true}));workflowBridgeControl.dispatchEvent(new Event('change',{bubbles:true}));const result=workflowBridgeCommit();setTimeout(workflowBridgeCommit,0);return result;}function workflowBridgeReset(){workflowBridgeCore.dataset.workflowVersion='0';workflowBridgeLastEffect=workflowBridgeSerialize();}
const workflowSessionCore=document.querySelector('#workflowCore');const workflowSessionToggle=document.querySelector('#workflowSessionToggle');const workflowSessionLength=document.querySelector('#workflowSessionLength');const workflowSessionState={phase:'ready',elapsed:0,limit:Number(workflowSessionLength.value),checkpoints:[],timer:null};function workflowSessionFormat(seconds){return String(Math.floor(seconds/60)).padStart(2,'0')+':'+String(seconds%60).padStart(2,'0');}function workflowSessionDrive(){const percent=Math.min(100,Math.round(workflowSessionState.elapsed/workflowSessionState.limit*100));document.querySelector('#workflowSessionClock').textContent=workflowSessionFormat(Math.max(0,workflowSessionState.limit-workflowSessionState.elapsed));const progress=document.querySelector('#workflowSessionProgress');progress.setAttribute('aria-valuenow',String(percent));progress.querySelector('i').style.width=percent+'%';workflowSessionCore.dataset.sessionPhase=workflowSessionState.phase;document.querySelector('#workflowSessionScore').textContent=workflowSessionState.checkpoints.length+' interactive checkpoints';}function workflowSessionLap(label){workflowSessionState.checkpoints.push({label,at:workflowSessionState.elapsed});const item=document.createElement('li');item.textContent=label+' · '+workflowSessionFormat(workflowSessionState.elapsed);document.querySelector('#workflowSessionLaps').append(item);workflowSessionDrive();}function workflowSessionStop(complete=false){clearInterval(workflowSessionState.timer);workflowSessionState.timer=null;workflowSessionState.phase=complete?'complete':'paused';workflowSessionToggle.textContent=complete?'Restart':'Continue round';workflowSessionToggle.setAttribute('aria-pressed','false');workflowSessionDrive();announce(complete?'Learning cycle round complete':'Round paused');}function workflowSessionStart(){if(workflowSessionState.phase==='complete'){workflowSessionState.elapsed=0;workflowSessionState.checkpoints=[];document.querySelector('#workflowSessionLaps').replaceChildren();}workflowSessionState.phase='running';workflowSessionToggle.textContent='Pause round';workflowSessionToggle.setAttribute('aria-pressed','true');const bridge=workflowBridgeActivate();workflowSessionLap(bridge.summary);clearInterval(workflowSessionState.timer);workflowSessionState.timer=setInterval(()=>{workflowSessionState.elapsed+=1;if(workflowSessionState.elapsed>=workflowSessionState.limit){workflowSessionStop(true);return;}workflowSessionDrive();},1000);workflowSessionDrive();announce('The learning cycle round has started · '+bridge.summary);}workflowSessionToggle.addEventListener('click',()=>workflowSessionState.phase==='running'?workflowSessionStop():workflowSessionStart());workflowSessionLength.addEventListener('input',()=>{workflowSessionState.limit=Number(workflowSessionLength.value);workflowSessionState.elapsed=Math.min(workflowSessionState.elapsed,workflowSessionState.limit);workflowSessionDrive();});workflowSessionCore.addEventListener('keydown',event=>{if(event.key==='Enter'||event.key===' '){workflowSessionLap('Keyboard Interaction');}});workflowSessionCore.addEventListener('click',event=>{if(event.target.closest('[data-core-bridge]'))workflowSessionLap('Core action · '+workflowBridgeSummary());});document.addEventListener('visibilitychange',()=>{if(document.hidden&&workflowSessionState.phase==='running')workflowSessionStop();});workflowSessionDrive();
workflowBridgeReset();
</script>
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