Audio tablet pointer capability test
Complete pointer capability detection for an audio tablet scenario: includes real content, interactive controls, clear state feedback, and layouts across sizes.
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<header class="mast"><div><span class="eyebrow">magazine / pointer capability detection / INTERMEDIATE</span><h1>Audio tablet pointer capability test</h1><p class="intro">Complete pointer capability detection for an audio tablet scenario: includes real content, interactive controls, clear state feedback, and layouts across sizes.</p></div><span class="scenario">Audio Tablet</span></header>
<div class="composition-studio"><div class="studio-ruler" aria-hidden="true"></div><section class="demo" aria-label="Audio Tablet Pointer Capability Detection Interactive Area"><div id="workflowSpatial" class="workflow-spatial" style="--spatial-width:64%;--spatial-zoom:1"><header><div><span class="eyebrow">Audio Tablet SPATIAL CANVAS</span><h2>Audio tablet adjustment station</h2></div><label>Detection Item Share<input id="workflowSpatialWidth" type="range" min="38" max="82" value="64"><output id="workflowSpatialWidthValue">64%</output></label><label>Content Scaling<input id="workflowSpatialZoom" type="range" min="80" max="120" value="100"><output id="workflowSpatialZoomValue">100%</output></label></header><div class="spatial-grid"><section id="workflowCore" class="workflow-core spatial-core"><!-- 11DZ_CORE_START:browser-media-device-pointer-profile --><div class="pointer-profiler"><header><span class="eyebrow">POINTER PROFILER</span><h2>Audio Tablet Pointer Trail Board</h2><dl><div><dt>Primary Pointer</dt><dd id="pointerPrimary">—</dd></div><div><dt>Hover capability</dt><dd id="pointerHover">—</dd></div><div><dt>Activity Touchpoints</dt><dd id="pointerActive">0</dd></div></dl></header><section id="pointerPad" tabindex="0" aria-label="Move the mouse, stylus, or finger to sample the pointer"><i id="pointerDot"></i><output id="pointerCoordinates">x 0 · y 0</output><p>Move the pointer within this area; keyboard users can use the arrow keys to move the sampling point.</p></section><aside><label>Track retention<input id="pointerTrailLength" type="range" min="3" max="20" value="8" data-core-bridge="browser-media-device-pointer-profile"><output>8</output></label><button id="pointerClear" class="action" type="button">Clear Trail</button><ol id="pointerSamples"></ol></aside></div><!-- 11DZ_CORE_END --></section><input id="workflowSpatialHandle" class="spatial-handle" type="button" value="↔" aria-label="Drag to adjust the main case preview width"><aside><strong>Audio tablet permission check</strong><p>The audio tablet capability log and audio tablet local storage will be rearranged according to the canvas size.</p><output id="workflowSpatialStatus">Width 64%, zoom 100%</output><input id="workflowSpatialApply" class="action primary" type="button" value="Recording capability"></aside></div></div><p id="status" class="status" role="status" aria-live="polite"></p></section></div>
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<script>
'use strict';
const statusOutput = document.querySelector('#status');
const announce = message => { statusOutput.textContent = message; };
/* 11DZ_CORE_SCRIPT_START:browser-media-device-pointer-profile */
const pointerPad=document.querySelector('#pointerPad');const pointerDot=document.querySelector('#pointerDot');const pointerSamples=[];const activePointers=new Map();let pointerPosition={x:50,y:50};function describePointers(){document.querySelector('#pointerPrimary').textContent=matchMedia('(pointer:fine)').matches?'Detailed':'Rough or none';document.querySelector('#pointerHover').textContent=matchMedia('(hover:hover)').matches?'Supported':'Unsupported';document.querySelector('#pointerActive').textContent=String(activePointers.size);}function samplePointer(type,pressure){const limit=Number(document.querySelector('#pointerTrailLength').value);pointerSamples.unshift({type,x:Math.round(pointerPosition.x),y:Math.round(pointerPosition.y),pressure:Math.round((pressure||0)*100)});pointerSamples.splice(limit);document.querySelector('#pointerSamples').replaceChildren(...pointerSamples.map(sample=>{const item=document.createElement('li');item.textContent=sample.type+' · '+sample.x+','+sample.y+' · '+sample.pressure+'%';return item;}));}function movePointer(clientX,clientY,type='keyboard',pressure=0){const rect=pointerPad.getBoundingClientRect();pointerPosition={x:Math.max(0,Math.min(100,(clientX-rect.left)/rect.width*100)),y:Math.max(0,Math.min(100,(clientY-rect.top)/rect.height*100))};pointerDot.style.left=pointerPosition.x+'%';pointerDot.style.top=pointerPosition.y+'%';document.querySelector('#pointerCoordinates').textContent='x '+Math.round(pointerPosition.x)+' · y '+Math.round(pointerPosition.y);samplePointer(type,pressure);}pointerPad.addEventListener('pointerdown',event=>{activePointers.set(event.pointerId,event.pointerType);pointerPad.setPointerCapture(event.pointerId);movePointer(event.clientX,event.clientY,event.pointerType,event.pressure);describePointers();});pointerPad.addEventListener('pointermove',event=>movePointer(event.clientX,event.clientY,event.pointerType,event.pressure));pointerPad.addEventListener('pointerup',event=>{activePointers.delete(event.pointerId);describePointers();});pointerPad.addEventListener('keydown',event=>{if(!['ArrowLeft','ArrowRight','ArrowUp','ArrowDown'].includes(event.key))return;event.preventDefault();const rect=pointerPad.getBoundingClientRect();const x=rect.left+rect.width*(pointerPosition.x+(event.key==='ArrowRight'?4:event.key==='ArrowLeft'?-4:0))/100;const y=rect.top+rect.height*(pointerPosition.y+(event.key==='ArrowDown'?4:event.key==='ArrowUp'?-4:0))/100;movePointer(x,y);});document.querySelector('#pointerTrailLength').addEventListener('input',event=>{event.currentTarget.nextElementSibling.textContent=event.currentTarget.value;});document.querySelector('#pointerClear').addEventListener('click',()=>{pointerSamples.length=0;document.querySelector('#pointerSamples').replaceChildren();announce('Pointer trail cleared');});describePointers();
/* 11DZ_CORE_SCRIPT_END */
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workflowBridgeReset();
</script>
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