fix: 修复slide分割/文字聚合/字号计算三个缺陷

bin/html2pptx.js

@@ -154,9 +154,17 @@ async function main() {
     // ------ 3. DOM extraction (in-browser) ------
     const slidesData = await page.evaluate(() => {
       // ----- Slide detection -----
-      let slides = document.querySelectorAll(
-        'section[data-slide], section.slide, section'
-      );
+      var slides;
+      // DashiAI format: .ppt-deck > .ppt-slide
+      var deck = document.querySelector('.ppt-deck');
+      if (deck) {
+        slides = deck.querySelectorAll('.ppt-slide');
+      }
+      if (!slides || slides.length <= 1) {
+        slides = document.querySelectorAll(
+          'section[data-slide], section.slide, section'
+        );
+      }
       if (slides.length <= 1) {
         slides = document.querySelectorAll('[data-slide]');
       }
@@ -165,40 +173,42 @@ async function main() {
         return r.width > 0 && r.height > 0;
       });
 
-      // Tags that are purely structural containers — skip when they have no direct text
-      var CONTAINER_TAGS = new Set([
-        'div', 'section', 'ul', 'ol', 'nav', 'header', 'footer',
-        'main', 'aside', 'article', 'form', 'fieldset', 'table',
-        'thead', 'tbody', 'tfoot', 'tr', 'figure',
+      // Tags whose full text content should be a single text box
+      var TEXT_BLOCK_TAGS = new Set([
+        'p', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6',
+        'li', 'td', 'th', 'blockquote', 'figcaption', 'dt', 'dd', 'caption',
       ]);
 
-      function hasDirectText(el) {
-        var nodes = el.childNodes;
-        for (var i = 0; i < nodes.length; i++) {
-          if (nodes[i].nodeType === 3 && nodes[i].textContent.trim()) return true;
-        }
-        return false;
-      }
-
       return slides.map(function (slide) {
         var slideRect = slide.getBoundingClientRect();
-        var allEls = slide.querySelectorAll('*');
         var elements = [];
 
-        for (var i = 0; i < allEls.length; i++) {
-          var el = allEls[i];
+        // Collect block-level text containers; each becomes one text box
+        var textBlocks = slide.querySelectorAll(
+          'p, h1, h2, h3, h4, h5, h6, li, td, th, blockquote, ' +
+          'figcaption, dt, dd, caption'
+        );
+
+        for (var i = 0; i < textBlocks.length; i++) {
+          var el = textBlocks[i];
+          // Skip if this block is nested inside another text block (e.g. li inside another li)
+          var parent = el.parentElement;
+          var skip = false;
+          while (parent && parent !== slide) {
+            if (TEXT_BLOCK_TAGS.has(parent.tagName.toLowerCase())) {
+              skip = true;
+              break;
+            }
+            parent = parent.parentElement;
+          }
+          if (skip) continue;
+
           var text = (el.textContent || '').trim();
           if (!text) continue;
 
           var rect = el.getBoundingClientRect();
           if (rect.width === 0 || rect.height === 0) continue;
 
-          var tag = el.tagName.toLowerCase();
-          var directText = hasDirectText(el);
-
-          // Skip structural containers that have no direct text (e.g. wrapper divs)
-          if (CONTAINER_TAGS.has(tag) && !directText) continue;
-
           var style = window.getComputedStyle(el);
 
           elements.push({
@@ -271,9 +281,8 @@ async function main() {
           var w = Math.max(el.width * scaleX, 0.3);
           var h = Math.max(el.height * scaleY, 0.2);
 
-          // Font size: proportional to slide height
-          // CSS px → inches at 96dpi → scaled to PPTX slide height → pt (/72 inches per pt)
-          var fontSize = el.fontSize * scaleY * 72;
+          // Font size: CSS px → pt (1pt = 1/72in, CSS 1px = 1/96in, so px × 72/96 = pt)
+          var fontSize = el.fontSize * 72 / 96;
           fontSize = Math.max(fontSize, 8);
 
           slide.addText(t, {