init with kirby, vue and pagedjs interactive

src/App.vue

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+<script setup>
+import PagedJsWrapper from './components/PagedJsWrapper.vue';
+import { onMounted, ref, nextTick } from 'vue';
+import { Previewer } from 'pagedjs';
+
+const marginTop = ref(20);
+let sourceHTML = '';
+let editorUIElement = null;
+
+const renderPaged = async () => {
+  console.log('renderPaged called, marginTop:', marginTop.value);
+
+  // Update @page margin dynamically
+  let styleEl = document.getElementById('dynamic-page-style');
+  if (!styleEl) {
+    styleEl = document.createElement('style');
+    styleEl.id = 'dynamic-page-style';
+    document.head.appendChild(styleEl);
+  }
+  styleEl.textContent = `
+    @page {
+      size: A4;
+      margin: ${marginTop.value}mm 15mm 26mm 15mm;
+    }
+  `;
+
+  // Detach UI before PagedJS processes body
+  if (editorUIElement && editorUIElement.parentNode) {
+    editorUIElement.remove();
+  }
+
+  // Remove previous render
+  const existingPages = document.querySelector('.pagedjs_pages');
+  if (existingPages) existingPages.remove();
+
+  // Restore source content to body
+  const printSource = document.getElementById('print-source');
+  if (printSource && sourceHTML) {
+    printSource.innerHTML = sourceHTML;
+    printSource.style.display = 'block';
+  }
+
+  // Render
+  const paged = new Previewer();
+  try {
+    const flow = await paged.preview();
+    console.log('Rendered', flow.total, 'pages.');
+  } catch (e) {
+    console.error('PagedJS error:', e);
+  }
+
+  // Re-inject UI after PagedJS transforms the DOM
+  if (editorUIElement) {
+    document.body.appendChild(editorUIElement);
+    // Apply styles inline since PagedJS removes stylesheets
+    editorUIElement.style.cssText = `
+      position: fixed !important;
+      bottom: 1rem !important;
+      left: 1rem !important;
+      z-index: 9999 !important;
+      background: white;
+      padding: 0.5rem;
+      border-radius: 4px;
+      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
+    `;
+  }
+};
+
+const increaseMargin = () => {
+  marginTop.value += 5;
+  console.log('Button clicked, new margin:', marginTop.value);
+  renderPaged();
+};
+
+onMounted(async () => {
+  await nextTick();
+  // Store source HTML before first render
+  const source = document.getElementById('print-source');
+  if (source) {
+    sourceHTML = source.innerHTML;
+    console.log('Source HTML stored:', sourceHTML.substring(0, 100));
+  }
+  // Store UI element reference
+  editorUIElement = document.getElementById('editor-ui');
+  renderPaged();
+});
+</script>
+
+<template>
+  <!-- Source content -->
+  <div id="print-source">
+    <PagedJsWrapper />
+  </div>
+
+  <!-- Editor UI overlay -->
+  <div id="editor-ui">
+    <button id="increase-margin" @click="increaseMargin">+</button>
+  </div>
+</template>
+
+<style>
+/* PagedJS print styles */
+h2 {
+  break-before: page;
+}
+
+@page {
+  @bottom-center {
+    content: string(title);
+  }
+}
+
+.chapter > h2 {
+  string-set: title content(text);
+}
+</style>

src/assets/pagedjs-interface.css

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+/* CSS for Paged.js interface – v0.4 */
+
+/* Change the look */
+:root {
+  --color-background: whitesmoke;
+  --color-pageSheet: #cfcfcf;
+  --color-pageBox: violet;
+  --color-paper: white;
+  --color-marginBox: transparent;
+  --pagedjs-crop-color: black;
+  --pagedjs-crop-shadow: white;
+  --pagedjs-crop-stroke: 1px;
+}
+
+/* To define how the book look on the screen: */
+@media screen, pagedjs-ignore {
+  body {
+    background-color: var(--color-background);
+  }
+
+  .pagedjs_pages {
+    display: flex;
+    width: calc(var(--pagedjs-width) * 2);
+    flex: 0;
+    flex-wrap: wrap;
+    margin: 0 auto;
+  }
+
+  .pagedjs_page {
+    background-color: var(--color-paper);
+    box-shadow: 0 0 0 1px var(--color-pageSheet);
+    margin: 0;
+    flex-shrink: 0;
+    flex-grow: 0;
+    margin-top: 10mm;
+  }
+
+  .pagedjs_first_page {
+    margin-left: var(--pagedjs-width);
+  }
+
+  .pagedjs_page:last-of-type {
+    margin-bottom: 10mm;
+  }
+
+  .pagedjs_pagebox {
+    box-shadow: 0 0 0 1px var(--color-pageBox);
+  }
+
+  .pagedjs_left_page {
+    z-index: 20;
+    width: calc(
+      var(--pagedjs-bleed-left) + var(--pagedjs-pagebox-width)
+    ) !important;
+  }
+
+  .pagedjs_left_page .pagedjs_bleed-right .pagedjs_marks-crop {
+    border-color: transparent;
+  }
+
+  .pagedjs_left_page .pagedjs_bleed-right .pagedjs_marks-middle {
+    width: 0;
+  }
+
+  .pagedjs_right_page {
+    z-index: 10;
+    position: relative;
+    left: calc(var(--pagedjs-bleed-left) * -1);
+  }
+
+  /* show the margin-box */
+
+  .pagedjs_margin-top-left-corner-holder,
+  .pagedjs_margin-top,
+  .pagedjs_margin-top-left,
+  .pagedjs_margin-top-center,
+  .pagedjs_margin-top-right,
+  .pagedjs_margin-top-right-corner-holder,
+  .pagedjs_margin-bottom-left-corner-holder,
+  .pagedjs_margin-bottom,
+  .pagedjs_margin-bottom-left,
+  .pagedjs_margin-bottom-center,
+  .pagedjs_margin-bottom-right,
+  .pagedjs_margin-bottom-right-corner-holder,
+  .pagedjs_margin-right,
+  .pagedjs_margin-right-top,
+  .pagedjs_margin-right-middle,
+  .pagedjs_margin-right-bottom,
+  .pagedjs_margin-left,
+  .pagedjs_margin-left-top,
+  .pagedjs_margin-left-middle,
+  .pagedjs_margin-left-bottom {
+    box-shadow: 0 0 0 1px inset var(--color-marginBox);
+  }
+
+  /* uncomment this part for recto/verso book : ------------------------------------ */
+
+  /*
+  .pagedjs_pages {
+      flex-direction: column;
+      width: 100%;
+  }
+
+  .pagedjs_first_page {
+      margin-left: 0;
+  }
+
+  .pagedjs_page {
+      margin: 0 auto;
+      margin-top: 10mm;
+  } 
+
+  .pagedjs_left_page{
+      width: calc(var(--pagedjs-bleed-left) + var(--pagedjs-pagebox-width) + var(--pagedjs-bleed-left))!important;
+  }
+
+  .pagedjs_left_page .pagedjs_bleed-right .pagedjs_marks-crop{
+      border-color: var(--pagedjs-crop-color);
+  }
+
+  .pagedjs_left_page .pagedjs_bleed-right .pagedjs_marks-middle{
+      width: var(--pagedjs-cross-size)!important;
+  } 
+
+  .pagedjs_right_page{
+      left: 0; 
+  } 
+  */
+
+  /*--------------------------------------------------------------------------------------*/
+
+  /* uncomment this par to see the baseline : -------------------------------------------*/
+
+  /* .pagedjs_pagebox {
+      --pagedjs-baseline: 22px;
+      --pagedjs-baseline-position: 5px;
+      --pagedjs-baseline-color: cyan;
+      background: linear-gradient(transparent 0%, transparent calc(var(--pagedjs-baseline) - 1px), var(--pagedjs-baseline-color) calc(var(--pagedjs-baseline) - 1px), var(--pagedjs-baseline-color) var(--pagedjs-baseline)), transparent;
+      background-size: 100% var(--pagedjs-baseline);
+      background-repeat: repeat-y;
+      background-position-y: var(--pagedjs-baseline-position);
+  }  */
+
+  /*--------------------------------------------------------------------------------------*/
+}
+
+/* Marks (to delete when merge in paged.js) */
+
+.pagedjs_marks-crop {
+  z-index: 999999999999;
+}
+
+.pagedjs_bleed-top .pagedjs_marks-crop,
+.pagedjs_bleed-bottom .pagedjs_marks-crop {
+  box-shadow: 1px 0px 0px 0px var(--pagedjs-crop-shadow);
+}
+
+.pagedjs_bleed-top .pagedjs_marks-crop:last-child,
+.pagedjs_bleed-bottom .pagedjs_marks-crop:last-child {
+  box-shadow: -1px 0px 0px 0px var(--pagedjs-crop-shadow);
+}
+
+.pagedjs_bleed-left .pagedjs_marks-crop,
+.pagedjs_bleed-right .pagedjs_marks-crop {
+  box-shadow: 0px 1px 0px 0px var(--pagedjs-crop-shadow);
+}
+
+.pagedjs_bleed-left .pagedjs_marks-crop:last-child,
+.pagedjs_bleed-right .pagedjs_marks-crop:last-child {
+  box-shadow: 0px -1px 0px 0px var(--pagedjs-crop-shadow);
+}

src/components/PagedJsWrapper.vue

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+<template>
+  <section class="chapter">
+    <h2>About</h2>
+    <p>
+      Lorem ipsum dolor sit amet consectetur adipiscing elit. Duis nibh tortor
+    </p>
+  </section>
+
+  <section class="chapter">
+    <h2>Chapter 1</h2>
+    <p>Lorem ipsum dolor sit amet</p>
+  </section>
+
+  <section class="chapter">
+    <h2>Chapter 2</h2>
+    <p>consectetur adipiscing elit</p>
+  </section>
+
+  <section class="chapter">
+    <h2>Chapter 3</h2>
+    <p>Duis nibh tortor, pellentesque eu suscipit vel</p>
+  </section>
+</template>
+
+<script setup>
+</script>
+
+<style>
+</style>

src/main.js

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+import { createApp } from 'vue'
+import './style.css'
+import App from './App.vue'
+
+createApp(App).mount('#app')

src/style.css

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+@import url('./assets/pagedjs-interface.css');
+@import url('./assets/editor-ui.css');