Capacités des médias et des appareils du navigateur
Détection de palette de couleurs pour écran public

Réalisez la détection du schéma de couleurs du système dans le contexte d’un écran public : contenu réel, contrôles actionnables, retours d’état clairs et disposition adaptative à toutes les tailles.
Capacités des médias et des appareils du navigateurDétection du schéma de couleurs du systèmeHTMLCSSBrowser API
Après activation de JavaScript, ce cas peut être modifié, exécuté et enregistré. Code source fixe ci-dessous :
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    <header class="mast"><div><span class="eyebrow">minimal / détection du thème du système / INTERMEDIATE</span><h1>Détection de palette de couleurs pour écran public</h1><p class="intro">Réalisez la détection du schéma de couleurs du système dans le contexte d’un écran public : contenu réel, contrôles actionnables, retours d’état clairs et disposition adaptative à toutes les tailles.</p></div><span class="scenario">écran communautaire</span></header>
    <div class="composition-deck"><div class="deck-bar"><span>CONTROL DECK · 04</span><span>Détection du schéma de couleurs du système</span><span class="deck-lights" aria-hidden="true"><i></i><i></i><i></i></span></div><section class="demo" aria-label="Zone d’interaction de détection du thème couleur du système d’écran public"><div id="similarityShell" class="similarity-shell" data-review-state="focus"><header class="similarity-head"><div><span class="eyebrow">Salle publique / REVIEW STUDIO</span><h2>Bureau de vérification des détections du schéma de couleurs du système</h2><p>Placez le cas principal dans une enveloppe de révision séparée et consignez en plus le mode d’observation, les points de contrôle et la conclusion actuelle.</p></div><output id="similarityState">Prêt à lancer la révision</output></header><div class="similarity-layout"><aside class="similarity-console"><fieldset class="similarity-modes"><legend>Vue de réexamen</legend><button class="action primary" type="button" data-review-view="focus">Mettre au point la vue principale</button><button class="action" type="button" data-review-view="compare">Liste de contrôle</button><button class="action" type="button" data-review-view="audit">Consigner la scène</button></fieldset><label>Observer la densité<input id="similarityDensity" type="range" min="84" max="124" value="100"><output id="similarityDensityValue">100%</output></label><label class="similarity-pin"><input id="similarityPin" type="checkbox"> Figer le point de contrôle actuel</label><ol id="similarityChecklist" class="similarity-checklist"><li>Enregistrement écran public</li><li>Collaboration sur écran public</li><li>Progression de l’écran public</li><li>Alerte écran public</li></ol><button id="similarityCapture" class="action primary" type="button">Point de contrôle enregistré</button><ol id="similarityLog" class="similarity-log"><li>En attente du premier enregistrement de contrôle</li></ol></aside><section class="similarity-stage"><div id="similarityDeck" class="similarity-deck"><article data-active="true"><span>01</span><strong>Enregistrement écran public</strong><p>Vérifier si les changements d’état sont visibles</p></article><article><span>02</span><strong>Collaboration sur écran public</strong><p>Confirmer la cohérence entre l’entrée au clavier et le clic</p></article><article><span>03</span><strong>Progression de l’écran public</strong><p>Vérifiez si la disposition se replie sur les écrans étroits</p></article><article><span>04</span><strong>Alerte écran public</strong><p>Enregistrer la conclusion de la révision en cours</p></article></div><div id="similarityCoreShell" class="similarity-core-shell"><div class="workflow-dispatch"><aside class="dispatch-console"><span class="eyebrow">Écran public avec DISPATCH</span><h2>tableau de bord de l’écran public</h2><form id="workflowDispatchForm"><label>Type de tâche<select id="workflowDispatchKind"><option>Vérification des autorisations pour l’écran public</option><option>Enregistrement des capacités de l’écran public</option><option>Enregistrer localement sur l’écran public</option></select></label><label>Élément de détection<input id="workflowDispatchAmount" type="number" min="1" max="9999" value="42"><span>élément</span></label><fieldset><legend>Priorité de traitement</legend><label><input type="radio" name="workflowPriority" value="normal" checked>Standard</label><label><input type="radio" name="workflowPriority" value="urgent">Urgent</label></fieldset><button class="action primary" type="submit">Capacité d’enregistrement</button></form><label>Tâche en cours<select id="workflowDispatchActive" aria-label="Basculer la tâche en cours"><option value="1">Vérification des autorisations pour l’écran public</option><option value="2">Enregistrement des capacités de l’écran public</option></select></label><output id="workflowDispatchSummary">En attente de planification</output></aside><section id="workflowCore" class="workflow-core dispatch-workbench" data-dispatch-priority="normal"><!-- 11DZ_CORE_START:browser-media-device-color-scheme --><div id="schemeLab" class="scheme-lab" data-scheme="system"><aside><span class="eyebrow">COLOR SCHEME</span><h2>Prévisualisation des couleurs pour écran public</h2><fieldset id="schemeChoices"><legend>Mode d’affichage</legend><label><input type="radio" name="scheme" value="system" checked>Suivre le système</label><label><input type="radio" name="scheme" value="light">Forcer le mode clair</label><label><input type="radio" name="scheme" value="dark">Mode sombre forcé</label></fieldset><label><input id="schemeContrast" type="checkbox" data-core-bridge="browser-media-device-color-scheme">Renforcement du contraste des bords</label></aside><section><header><i></i><i></i><i></i><output id="schemeDetected">Détecter les préférences du système</output></header><article><span class="eyebrow">LIVE PREVIEW</span><h3>Le changement de thème conserve la structure du contenu</h3><p>Les rôles de couleur, les bordures et les styles de focus évoluent ensemble.</p><button id="schemeSample" class="action" type="button">Changer l’état de l’exemple</button></article><ul id="schemeTokens"><li><i></i>Page</li><li><i></i>Texte</li><li><i></i>Accentué</li></ul></section></div><!-- 11DZ_CORE_END --></section></div></div></section></div></div><p id="status" class="status" role="status" aria-live="polite"></p></section></div>
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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":"Vérification des autorisations pour l’écran public","amount":12,"priority":"normal","touches":0}],["2",{"label":"Enregistrement des capacités de l’écran public","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+' élément · '+bridge.summary;announce('Tâche en cours sur l’écran public :'+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'?' · Urgent':'');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+' élément · '+workflowBridgeSummary();});workflowDispatchRender('1',false);
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const similarityShell=document.querySelector('#similarityShell');const similarityState=document.querySelector('#similarityState');const similarityDensity=document.querySelector('#similarityDensity');const similarityDensityValue=document.querySelector('#similarityDensityValue');const similarityPin=document.querySelector('#similarityPin');const similarityChecklistItems=[...document.querySelectorAll('#similarityChecklist li')];const similarityDeckItems=[...document.querySelectorAll('#similarityDeck article')];const similarityLog=document.querySelector('#similarityLog');const similarityNotes=["Enregistrement écran public","Collaboration sur écran public","Progression de l’écran public","Alerte écran public"];const similarityCore=document.querySelector('#workflowCore');let similarityCaptures=0;function similaritySetActive(index){similarityDeckItems.forEach((item,itemIndex)=>{if(itemIndex===index)item.setAttribute('data-active','true');else item.removeAttribute('data-active');});}function similarityRender(reason){const version=similarityCore?.dataset.workflowVersion||'0';const density=Number(similarityDensity.value);similarityShell.style.setProperty('--similarity-density',String(density));similarityShell.dataset.pinned=String(similarityPin.checked);similarityDensityValue.textContent=density+'%';similarityChecklistItems.forEach((item,index)=>item.classList.toggle('is-done',index<similarityCaptures));similaritySetActive(Math.min(similarityDeckItems.length-1,similarityCaptures%similarityDeckItems.length));similarityState.textContent=reason+' · Version de base '+version+(similarityPin.checked?' · Épinglé':'');}document.querySelectorAll('[data-review-view]').forEach(button=>button.addEventListener('click',()=>{document.querySelectorAll('[data-review-view]').forEach(item=>item.classList.toggle('primary',item===button));similarityShell.dataset.reviewState=button.dataset.reviewView;similarityRender('Basculé vers'+button.textContent);announce('Vue de vérification :'+button.textContent);}));similarityDensity.addEventListener('input',()=>{similarityRender('La densité d’observation a été mise à jour');announce('Observer la densité '+similarityDensity.value+'%');});similarityPin.addEventListener('change',()=>{similarityRender(similarityPin.checked?'Le point de contrôle actuel est figé':'Le point de contrôle actuel est déverrouillé');announce(similarityPin.checked?'Point de contrôle actuel épinglé':'Point de contrôle fixé annulé');});document.querySelector('#similarityCapture').addEventListener('click',()=>{const note=similarityNotes[similarityCaptures%similarityNotes.length];const version=similarityCore?.dataset.workflowVersion||'0';similarityCaptures+=1;const item=document.createElement('li');item.textContent='Point de contrôle '+similarityCaptures+' · '+note+' · Version de base '+version;const empty=similarityLog.querySelector('li')?.textContent==='En attente du premier enregistrement de contrôle';if(empty)similarityLog.replaceChildren(item);else similarityLog.prepend(item);while(similarityLog.children.length>6)similarityLog.lastElementChild.remove();similarityRender('Point de contrôle enregistré '+similarityCaptures);announce('Point de contrôle enregistré '+similarityCaptures+' · '+note);});similarityCore?.addEventListener('focusin',()=>similarityRender('Vue principale focalisée'));similarityCore?.addEventListener('click',()=>similarityRender('Interaction sur la vue principale'));similarityRender('Prêt à lancer la révision');
  </script>
</body>
</html>