layout2vector/jsbin-div-to-png-example.html at main · node-projects/layout2vector · 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" />
    <title>layout2vector JSBin Demo</title>
    <style>
      :root {
        --bg: #f3f6fb;
        --card: #ffffff;
        --ink: #1b2333;
        --accent: #0f7cda;
        --muted: #6a7487;
      }

      body {
        margin: 0;
        font-family: "Segoe UI", "Helvetica Neue", sans-serif;
        color: var(--ink);
        background: radial-gradient(circle at top right, #d9ebff 0%, var(--bg) 55%);
      }

      .page {
        max-width: 920px;
        margin: 24px auto;
        padding: 0 16px;
        display: grid;
        gap: 16px;
      }

      .panel {
        background: var(--card);
        border: 1px solid #dbe2ef;
        border-radius: 14px;
        padding: 16px;
        box-shadow: 0 8px 28px rgba(20, 34, 66, 0.08);
      }

      h1 {
        margin: 0 0 10px;
        font-size: 22px;
      }

      p {
        margin: 0;
        color: var(--muted);
      }

      #capture {
        margin-top: 16px;
        width: min(620px, 100%);
        min-height: 180px;
        border-radius: 20px;
        padding: 18px;
        color: #0a1b2e;
        background:
          linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(221, 236, 255, 0.95)),
          repeating-linear-gradient(-45deg, rgba(15, 124, 218, 0.08), rgba(15, 124, 218, 0.08) 12px, rgba(15, 124, 218, 0.02) 12px, rgba(15, 124, 218, 0.02) 24px);
        border: 2px solid rgba(15, 124, 218, 0.22);
      }

      #capture h2 {
        margin: 0;
        font-size: 26px;
      }

      #capture .badge {
        display: inline-block;
        margin-top: 10px;
        padding: 6px 10px;
        border-radius: 999px;
        background: #0f7cda;
        color: white;
        font-size: 12px;
        letter-spacing: 0.06em;
        text-transform: uppercase;
      }

      #capture .note {
        margin-top: 10px;
        font-size: 15px;
      }

      .controls {
        margin-top: 14px;
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
      }

      button {
        border: 0;
        border-radius: 10px;
        background: var(--accent);
        color: white;
        padding: 10px 14px;
        font-weight: 600;
        cursor: pointer;
      }

      button:hover {
        filter: brightness(1.08);
      }

      #status {
        margin-top: 10px;
        min-height: 1.3em;
        font-size: 14px;
        color: #274060;
      }

      #result {
        margin-top: 16px;
        max-width: 100%;
        border-radius: 12px;
        border: 1px solid #cfd9ea;
      }
    </style>
  </head>
  <body>
    <div class="page">
      <div class="panel">
        <h1>Div to PNG using @node-projects/layout2vector</h1>
        <p>
          This demo initializes getBoxQuads polyfill first (for Chromium), then extracts
          the target div and renders it to a PNG data URL.
        </p>

        <div id="capture">
          <h2>Hello JSBin</h2>
          <span class="badge">layout2vector</span>
          <p class="note">Export this card as PNG with gradients, text, and rounded corners.</p>
        </div>

        <div class="controls">
          <button id="convertBtn" type="button">Convert #capture to PNG</button>
        </div>
        <div id="status"></div>
        <img id="result" alt="Generated PNG preview" />
      </div>
    </div>

    <script type="module">
      import { addPolyfill } from "https://esm.sh/get-box-quads-polyfill@4";
      import { extractIR, renderIR, ImageWriter } from "https://esm.sh/@node-projects/layout2vector@5";

      // Required in Chromium where getBoxQuads is missing.
      addPolyfill(window);

      const convertBtn = document.getElementById("convertBtn");
      const capture = document.getElementById("capture");
      const status = document.getElementById("status");
      const result = document.getElementById("result");

      convertBtn.addEventListener("click", async () => {
        status.textContent = "Converting...";

        try {
          const bounds = capture.getBoundingClientRect();
          const ir = await extractIR(capture, {
            includeText: true,
            includeImages: true,
          });

          const writer = new ImageWriter({
            width: Math.max(1, Math.ceil(bounds.width)),
            height: Math.max(1, Math.ceil(bounds.height)),
            scale: Math.min(window.devicePixelRatio || 1, 2),
          });

          const pngResult = await renderIR(ir, writer);
          await pngResult.finalize();

          const dataUrl = pngResult.toDataURL("image/png");
          result.src = dataUrl;
          status.textContent = "Done. PNG generated below.";
        } catch (error) {
          console.error(error);
          status.textContent = `Conversion failed: ${error?.message || error}`;
        }
      });
    </script>
  </body>
</html>