NTOG/carousel.html at main · heidihelena/NTOG · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>NTOG Carousel Builder</title>
<meta name="robots" content="noindex, follow">
<meta name="description" content="Internal NTOG tool for building social-media carousel slides. Not part of the public site content.">
<link rel="icon" href="/ntog-logo.svg" type="image/svg+xml">
<style>
@font-face{font-family:"Montserrat";src:url("/fonts/montserrat/Montserrat-VariableFont_wght.ttf") format("truetype");font-weight:100 900;font-display:swap;}
@font-face{font-family:"Open Sans";src:url("/fonts/open-sans/OpenSans-VariableFont_wdth%2Cwght.ttf") format("truetype");font-weight:100 900;font-display:swap;}
</style>
<style>
  :root{
    --navy:#003580; --navy-h:#002a5c; --red:#c8102e; --ink:#252525;
    --grey:#6e767e; --soft:#f7f7f8; --bd:#e5e7eb; --tint:#eff3fa;
  }
  *{box-sizing:border-box;}
  body{margin:0;font-family:"Open Sans",Arial,sans-serif;color:var(--ink);background:var(--soft);}
  header{background:#fff;border-bottom:4px solid var(--navy);padding:.7rem 1.2rem;display:flex;align-items:center;gap:.6rem;}
  header img{width:30px;height:30px;}
  header h1{font-family:"Montserrat",sans-serif;font-weight:800;font-size:1.1rem;margin:0;color:var(--navy);letter-spacing:.01em;}
  header .sub{font-size:.82rem;color:var(--grey);margin-left:auto;}
  .wrap{display:flex;gap:1.5rem;padding:1.5rem;align-items:flex-start;flex-wrap:wrap;}
  .panel{flex:1 1 360px;min-width:340px;background:#fff;border:1px solid var(--bd);border-radius:14px;padding:1.2rem 1.3rem;box-shadow:0 10px 25px rgba(15,23,42,.05);}
  .preview{flex:1 1 420px;min-width:360px;position:sticky;top:1.5rem;text-align:center;}
  canvas{width:100%;max-width:440px;height:auto;border:1px solid var(--bd);border-radius:12px;box-shadow:0 14px 35px rgba(15,23,42,.12);background:#fff;}
  h2{font-family:"Montserrat",sans-serif;font-weight:700;font-size:1rem;color:var(--navy);margin:0 0 .8rem;}
  label{display:block;font-weight:600;font-size:.82rem;margin:.7rem 0 .25rem;}
  input,textarea,select{width:100%;font-family:inherit;font-size:.9rem;padding:.5rem .6rem;border:1px solid var(--bd);border-radius:8px;background:#fff;color:var(--ink);}
  textarea{resize:vertical;line-height:1.4;}
  .hint{font-size:.74rem;color:var(--grey);margin:.2rem 0 0;}
  .row{display:flex;gap:.6rem;flex-wrap:wrap;}
  .row > *{flex:1;}
  .btn{font-family:"Montserrat",sans-serif;font-weight:700;font-size:.85rem;border:0;border-radius:999px;padding:.55rem 1.1rem;cursor:pointer;background:var(--navy);color:#fff;transition:background .15s;}
  .btn:hover{background:var(--navy-h);}
  .btn.sec{background:#fff;color:var(--navy);border:1.5px solid var(--navy);}
  .btn.sec:hover{background:var(--tint);}
  .btn.ghost{background:transparent;color:var(--grey);border:1.5px solid var(--bd);}
  .btn.sm{padding:.35rem .7rem;font-size:.78rem;}
  .toolbar{display:flex;gap:.5rem;flex-wrap:wrap;align-items:center;margin:.4rem 0 1rem;}
  .slidechips{display:flex;gap:.4rem;flex-wrap:wrap;margin:.5rem 0;}
  .chip{font-size:.78rem;font-weight:700;padding:.3rem .7rem;border-radius:999px;border:1.5px solid var(--bd);background:#fff;cursor:pointer;color:var(--grey);}
  .chip.on{border-color:var(--navy);color:var(--navy);background:var(--tint);}
  .seg{display:inline-flex;border:1.5px solid var(--bd);border-radius:999px;overflow:hidden;}
  .seg button{border:0;background:#fff;padding:.4rem .9rem;font:inherit;font-weight:700;font-size:.82rem;cursor:pointer;color:var(--grey);}
  .seg button.on{background:var(--navy);color:#fff;}
  .seg.red button.on{background:var(--red);}
  .note{background:var(--tint);border:1px solid #d7e0ef;border-radius:10px;padding:.6rem .8rem;font-size:.8rem;color:#33415c;margin-top:1rem;}
  fieldset{border:1px solid var(--bd);border-radius:10px;margin:.6rem 0 0;padding:.6rem .8rem;}
  legend{font-weight:700;font-size:.8rem;color:var(--navy);padding:0 .4rem;}
</style>
</head>
<body>
<header>
  <img src="/ntog-logo.svg" alt="NTOG">
  <h1>Carousel Builder</h1>
  <span class="sub">On-brand LinkedIn / Instagram slides · 1080×1350 · runs in your browser</span>
</header>

<div class="wrap">
  <!-- CONTROLS -->
  <div class="panel">
    <h2>Deck</h2>
    <div class="row">
      <div>
        <label>Theme</label>
        <div class="seg" id="themeSeg">
          <button data-theme="navy" class="on">Standard · Navy</button>
          <button data-theme="red">2027 · Red</button>
        </div>
      </div>
    </div>

    <div class="slidechips" id="slideChips"></div>
    <div class="toolbar">
      <button class="btn sm sec" id="addSlide">+ Slide</button>
      <button class="btn sm ghost" id="dupSlide">Duplicate</button>
      <button class="btn sm ghost" id="delSlide">Delete</button>
    </div>

    <h2 style="margin-top:1.2rem;">Slide</h2>
    <label>Layout</label>
    <select id="layout">
      <option value="cover">Cover</option>
      <option value="content">Content (bullets)</option>
      <option value="closing">Closing / CTA</option>
    </select>

    <label>Eyebrow (small label)</label>
    <input id="eyebrow" maxlength="40" placeholder="e.g. COLOUR USAGE">

    <label>Title</label>
    <textarea id="title" rows="2" placeholder="Slide headline"></textarea>

    <label>Lead / subtitle</label>
    <textarea id="lead" rows="2" placeholder="Supporting line"></textarea>

    <fieldset id="bulletsField">
      <legend>Bullets — one per line, "Head | description"</legend>
      <textarea id="bullets" rows="5" placeholder="Navy is the canvas | Dark hero or white&#10;Red is one accent | Never a wall of red"></textarea>
    </fieldset>

    <fieldset id="ctaField">
      <legend>Call to action</legend>
      <input id="cta" maxlength="40" placeholder="ntog.org">
    </fieldset>

    <div class="toolbar" style="margin-top:1.2rem;">
      <button class="btn" id="dlOne">Download this slide</button>
      <button class="btn sec" id="dlAll">Download all</button>
    </div>
    <div class="note">Tip: keep titles short and lead lines to one idea. Red is reserved for the 2027 theme and single accents — structure with navy + greys.</div>
  </div>

  <!-- PREVIEW -->
  <div class="preview">
    <canvas id="cv" width="2160" height="2700"></canvas>
    <p class="hint" id="pageInfo"></p>
  </div>
</div>

<script>
const S = 2, W = 1080, H = 1350, M = 80;             // base units; canvas is 2×
const C = {ink:"#252525", grey:"#6e767e", soft:"#f7f7f8", bd:"#e5e7eb",
           navy:"#003580", navyTint:"#eff3fa", red:"#c8102e", redTint:"#fbecee", white:"#ffffff"};
const cv = document.getElementById("cv"), ctx = cv.getContext("2d");

// transparent brand logo, embedded so canvas export works offline
const LOGO_SVG = `<svg width="1024" height="1024" viewBox="0 0 1024 1024" xmlns="http://www.w3.org/2000/svg"><defs><linearGradient id="r" x1="190" y1="400" x2="520" y2="190" gradientUnits="userSpaceOnUse"><stop offset="0" stop-color="#E6001F"/><stop offset="1" stop-color="#C8102E"/></linearGradient><linearGradient id="y" x1="520" y1="190" x2="835" y2="430" gradientUnits="userSpaceOnUse"><stop offset="0" stop-color="#FFD21A"/><stop offset="1" stop-color="#F2B400"/></linearGradient><linearGradient id="b" x1="210" y1="500" x2="850" y2="760" gradientUnits="userSpaceOnUse"><stop offset="0" stop-color="#0057B8"/><stop offset="0.55" stop-color="#004B9B"/><stop offset="1" stop-color="#002F63"/></linearGradient><linearGradient id="b2" x1="330" y1="810" x2="700" y2="810" gradientUnits="userSpaceOnUse"><stop offset="0" stop-color="#0057B8"/><stop offset="1" stop-color="#004B9B"/></linearGradient></defs><g fill="none" stroke-width="126"><path d="M 222 418 A 305 305 0 0 1 501 207" stroke="url(#r)"/><path d="M 539 208 A 305 305 0 0 1 805 428" stroke="url(#y)"/><path d="M 810 449 A 305 305 0 0 1 696 756" stroke="url(#b)"/><path d="M 665 776 A 305 305 0 0 1 360 776" stroke="url(#b2)"/><path d="M 324 753 A 305 305 0 0 1 211 471" stroke="url(#b)"/></g></svg>`;
const logoImg = new Image();
let logoReady = false;
logoImg.onload = () => { logoReady = true; render(); };
logoImg.src = "data:image/svg+xml;charset=utf-8," + encodeURIComponent(LOGO_SVG);

// ---- state ----
let theme = "navy";
let slides = [
  {layout:"cover", eyebrow:"Brand carousel", title:"NTOG\nCarousel Builder", lead:"Nordic Thoracic Oncology Group", bullets:"", cta:"ntog.org"},
  {layout:"content", eyebrow:"How to use colour", title:"Navy structures, red accents", lead:"",
   bullets:"Navy is the canvas | Dark hero gradient or white; navy for headings & primary buttons.\nRed is one accent | The 2027 theme, or a single focal word. Never a wall of red.\nGreys do the structure | Section greys, hairlines and ink carry the layout.", cta:""},
  {layout:"closing", eyebrow:"Find out more", title:"One Nordic home for lung-cancer guidance, tools & research", lead:"", bullets:"", cta:"ntog.org"}
];
let idx = 0;
const accent = () => theme === "red" ? C.red : C.navy;
const accentTint = () => theme === "red" ? C.redTint : C.navyTint;

// ---- canvas helpers (base units) ----
function font(family, weight, size){ ctx.font = `${weight} ${size}px "${family}"`; }
function rr(x,y,w,h,r){ ctx.beginPath(); ctx.roundRect(x,y,w,h,r); }
function wrap(text, maxW){
  const out=[];
  text.split("\n").forEach(par=>{
    const words=par.split(" "); let line="";
    words.forEach(w=>{
      const t=line?line+" "+w:w;
      if(ctx.measureText(t).width>maxW && line){ out.push(line); line=w; } else line=t;
    });
    out.push(line);
  });
  return out;
}
function eyebrow(x,y,txt){
  if(!txt) return y;
  font("Montserrat",700,14);
  const t=txt.toUpperCase().split("").join(" ");
  ctx.letterSpacing="2px";
  const tw=ctx.measureText(t).width, h=46;
  rr(x,y,tw+34,h,h/2);
  ctx.fillStyle=accentTint(); ctx.fill();
  ctx.lineWidth=2; ctx.strokeStyle=accent(); ctx.stroke();
  ctx.fillStyle=accent(); ctx.textBaseline="middle"; ctx.fillText(t,x+17,y+h/2+1);
  ctx.letterSpacing="0px"; ctx.textBaseline="alphabetic";
  return y+h;
}
function bulletSq(x,cy,color,size=12){ rr(x,cy-size/2,size,size,3); ctx.fillStyle=color; ctx.fill(); }
function footer(n){
  font("Open Sans",600,14); ctx.fillStyle=C.grey; ctx.textBaseline="alphabetic";
  ctx.fillText("ntog.org", M, H-44);
  const s=String(n+1).padStart(2,"0")+" / "+String(slides.length).padStart(2,"0");
  ctx.fillText(s, W-M-ctx.measureText(s).width, H-44);
}

// ---- layouts ----
function drawCover(s,n){
  if(logoReady) ctx.drawImage(logoImg, M, 150, 150, 150);
  let y=eyebrow(M,360,s.eyebrow)+44;
  font("Montserrat",800,84); ctx.fillStyle=accent(); ctx.textBaseline="top";
  wrap(s.title||"",W-2*M).forEach(l=>{ ctx.fillText(l,M,y); y+=92; });
  y+=14;
  if(s.lead){ font("Open Sans",600,24); ctx.fillStyle=C.ink; wrap(s.lead,W-2*M).forEach(l=>{ctx.fillText(l,M,y);y+=34;}); }
  // accent rule
  ctx.fillStyle=accent(); ctx.fillRect(M, H-150, 110, 8);
  if(s.cta){ font("Montserrat",700,24); ctx.fillStyle=accent(); const t=s.cta+" →"; ctx.fillText(t, W-M-ctx.measureText(t).width, H-168); }
  ctx.textBaseline="alphabetic"; footer(n);
}
function drawContent(s,n){
  let y=eyebrow(M,150,s.eyebrow)+40;
  font("Montserrat",800,48); ctx.fillStyle=C.ink; ctx.textBaseline="top";
  wrap(s.title||"",W-2*M).forEach(l=>{ ctx.fillText(l,M,y); y+=58; });
  y+=24;
  if(s.lead){ font("Open Sans",400,22); ctx.fillStyle=C.grey; wrap(s.lead,W-2*M).forEach(l=>{ctx.fillText(l,M,y);y+=32;}); y+=18; }
  const items=(s.bullets||"").split("\n").map(b=>b.trim()).filter(Boolean);
  items.forEach((raw,i)=>{
    if(i){ ctx.strokeStyle=C.bd; ctx.lineWidth=1; ctx.beginPath(); ctx.moveTo(M,y-18); ctx.lineTo(W-M,y-18); ctx.stroke(); }
    const [head,...rest]=raw.split("|"); const body=rest.join("|").trim();
    bulletSq(M, y+18, accent(), 13);
    font("Montserrat",700,26); ctx.fillStyle=accent(); ctx.textBaseline="top"; ctx.fillText(head.trim(), M+40, y);
    let yy=y+44;
    if(body){ font("Open Sans",400,20); ctx.fillStyle="#464c52"; wrap(body,W-2*M-40).forEach(l=>{ctx.fillText(l,M+40,yy);yy+=28;}); }
    y=yy+34;
  });
  ctx.textBaseline="alphabetic"; footer(n);
}
function drawClosing(s,n){
  let y=eyebrow(M,360,s.eyebrow)+44;
  font("Montserrat",800,60); ctx.fillStyle=accent(); ctx.textBaseline="top";
  wrap(s.title||"",W-2*M).forEach(l=>{ ctx.fillText(l,M,y); y+=72; });
  y+=30;
  if(s.lead){ font("Open Sans",400,24); ctx.fillStyle=C.grey; wrap(s.lead,W-2*M).forEach(l=>{ctx.fillText(l,M,y);y+=34;}); }
  if(s.cta){
    font("Montserrat",700,30); const t=s.cta+"  →"; const tw=ctx.measureText(t).width;
    rr(M, H-300, tw+72, 96, 48); ctx.fillStyle=accent(); ctx.fill();
    ctx.fillStyle="#fff"; ctx.textBaseline="middle"; ctx.fillText(t, M+36, H-300+50);
  }
  if(logoReady) ctx.drawImage(logoImg, W-M-120, 150, 120, 120);
  ctx.textBaseline="alphabetic"; footer(n);
}

function render(){
  ctx.setTransform(S,0,0,S,0,0);
  ctx.clearRect(0,0,W,H);
  ctx.fillStyle=C.white; ctx.fillRect(0,0,W,H);
  const s=slides[idx];
  if(s.layout==="cover") drawCover(s,idx);
  else if(s.layout==="closing") drawClosing(s,idx);
  else drawContent(s,idx);
  document.getElementById("pageInfo").textContent = `Slide ${idx+1} of ${slides.length} — ${s.layout}`;
}

// ---- UI binding ----
const $=id=>document.getElementById(id);
function syncForm(){
  const s=slides[idx];
  $("layout").value=s.layout; $("eyebrow").value=s.eyebrow||""; $("title").value=s.title||"";
  $("lead").value=s.lead||""; $("bullets").value=s.bullets||""; $("cta").value=s.cta||"";
  $("bulletsField").style.display = s.layout==="content" ? "" : "none";
  $("ctaField").style.display = (s.layout==="cover"||s.layout==="closing") ? "" : "none";
  renderChips();
}
function renderChips(){
  const c=$("slideChips"); c.innerHTML="";
  slides.forEach((s,i)=>{
    const b=document.createElement("button");
    b.className="chip"+(i===idx?" on":""); b.textContent=(i+1)+" · "+s.layout;
    b.onclick=()=>{idx=i;syncForm();render();}; c.appendChild(b);
  });
}
function bind(id,key){ $(id).addEventListener("input",e=>{ slides[idx][key]=e.target.value; if(key==="layout")syncForm(); render(); }); }
["eyebrow","title","lead","bullets","cta"].forEach(k=>bind(k,k));
$("layout").addEventListener("change",e=>{ slides[idx].layout=e.target.value; syncForm(); render(); });

$("themeSeg").addEventListener("click",e=>{
  const btn=e.target.closest("button"); if(!btn)return;
  theme=btn.dataset.theme;
  [...$("themeSeg").children].forEach(b=>b.classList.toggle("on",b===btn));
  $("themeSeg").classList.toggle("red", theme==="red");
  render();
});
$("addSlide").onclick=()=>{ slides.splice(idx+1,0,{layout:"content",eyebrow:"",title:"New slide",lead:"",bullets:"Point one | detail\nPoint two | detail",cta:""}); idx++; syncForm(); render(); };
$("dupSlide").onclick=()=>{ slides.splice(idx+1,0,JSON.parse(JSON.stringify(slides[idx]))); idx++; syncForm(); render(); };
$("delSlide").onclick=()=>{ if(slides.length>1){ slides.splice(idx,1); idx=Math.max(0,idx-1); syncForm(); render(); } };

function exportSlide(i){
  const keep=idx; idx=i; render();
  return new Promise(res=>cv.toBlob(b=>{
    const a=document.createElement("a"); a.href=URL.createObjectURL(b);
    a.download=`ntog-${theme}-slide-${String(i+1).padStart(2,"0")}.png`; a.click();
    URL.revokeObjectURL(a.href); idx=keep; render(); res();
  },"image/png"));
}
$("dlOne").onclick=()=>exportSlide(idx);
$("dlAll").onclick=async()=>{ for(let i=0;i<slides.length;i++){ await exportSlide(i); await new Promise(r=>setTimeout(r,350)); } };

document.fonts.ready.then(()=>{ syncForm(); render(); });
syncForm(); render();
</script>
</body>
</html>