feat: EPUB阅读器搜索、注释、CFI模块及大书远距跳转优化

- 实现EPUB阅读器搜索功能及选中注释功能
- 优化CFI模块，修复代码审查发现的11个问题
- 实现大书远距目录跳转与后台补全优化方案
- 优化设置面板与章节运行时联动
- 重构及大量改进优化

Sources/RDReaderView/EPUBCore/Resources/epub-fixed-layout.html

@@ -89,6 +89,60 @@
         }
       }
 
+      function parseCssPixelValue(value) {
+        if (!value) { return 0; }
+        var match = String(value).match(/([0-9]+(?:\.[0-9]+)?)px?/);
+        return match ? Number.parseFloat(match[1]) : 0;
+      }
+
+      function sizeFromElement(element) {
+        if (!element) { return null; }
+        var width = parseCssPixelValue(element.style && element.style.width);
+        var height = parseCssPixelValue(element.style && element.style.height);
+        if (!width || !height) {
+          width = parseCssPixelValue(element.getAttribute && element.getAttribute('width'));
+          height = parseCssPixelValue(element.getAttribute && element.getAttribute('height'));
+        }
+        if (!width || !height) {
+          var rect = element.getBoundingClientRect ? element.getBoundingClientRect() : null;
+          if (rect) {
+            width = width || rect.width;
+            height = height || rect.height;
+          }
+        }
+        if (width > 1 && height > 1) {
+          return { width: width, height: height };
+        }
+        return null;
+      }
+
+      function parsePageSizeFromDocumentBox(iframe) {
+        try {
+          var doc = iframe.contentWindow.document;
+          return sizeFromElement(doc.body) ||
+            sizeFromElement(doc.documentElement) ||
+            sizeFromElement(doc.querySelector('[id$="_hype_container"]')) ||
+            sizeFromElement(doc.querySelector('iframe')) ||
+            null;
+        } catch (error) {
+          return null;
+        }
+      }
+
+      function parsePageSizeFromNestedFrame(iframe) {
+        try {
+          var nestedFrame = iframe.contentWindow.document.querySelector('iframe');
+          if (!nestedFrame || !nestedFrame.contentWindow || !nestedFrame.contentWindow.document) {
+            return null;
+          }
+          return parsePageSizeFromViewportMetaTag(nestedFrame) ||
+            parsePageSizeFromDocumentBox(nestedFrame) ||
+            parsePageSizeFromEmbeddedImage(nestedFrame);
+        } catch (error) {
+          return null;
+        }
+      }
+
       function parsePageSizeFromEmbeddedImage(iframe) {
         try {
           var img = iframe.contentWindow.document.querySelector('img');
@@ -176,9 +230,14 @@
         function onLoad() {
           iframe.__ssPageSize =
             parsePageSizeFromViewportMetaTag(iframe) ||
+            parsePageSizeFromDocumentBox(iframe) ||
+            parsePageSizeFromNestedFrame(iframe) ||
             parsePageSizeFromEmbeddedImage(iframe) ||
             pageViewportSize(iframe);
           layoutPage(iframe);
+          window.setTimeout(function() {
+            layoutPage(iframe);
+          }, 250);
           finalizeLoad();
         }
 
@@ -204,4 +263,4 @@
     })();
   </script>
 </body>
-</html>
+</html>