Merge branch 'feat-indexing-feedback' of https://github.com/jpirnay/crosspoint-reader into mybuild

lib/Epub/Epub/parsers/ChapterHtmlSlimParser.cpp

@@ -1012,9 +1012,13 @@ bool ChapterHtmlSlimParser::parseAndBuildPages() {
     return false;
   }
 
-  // Get file size to decide whether to show indexing popup.
-  if (popupFn && file.size() >= MIN_SIZE_FOR_POPUP) {
-    popupFn();
+  const size_t totalFileSize = file.size();
+  size_t bytesRead = 0;
+  int lastReportedProgress = -1;
+
+  // Show initial progress popup for files above threshold.
+  if (progressFn && totalFileSize >= MIN_SIZE_FOR_POPUP) {
+    progressFn(0);
   }
 
   XML_SetUserData(parser, this);
@@ -1036,6 +1040,16 @@ bool ChapterHtmlSlimParser::parseAndBuildPages() {
     }
 
     const size_t len = file.read(buf, PARSE_BUFFER_SIZE);
+    bytesRead += len;
+
+    // Report progress in 5% increments to limit e-ink refreshes.
+    if (progressFn && totalFileSize >= MIN_SIZE_FOR_POPUP) {
+      const int progress = static_cast<int>(bytesRead * 100 / totalFileSize);
+      if (progress / 5 > lastReportedProgress / 5) {
+        lastReportedProgress = progress;
+        progressFn(progress);
+      }
+    }
 
     if (len == 0 && file.available() > 0) {
       LOG_ERR("EHP", "File read error");

lib/Epub/Epub/parsers/ChapterHtmlSlimParser.h

@@ -26,7 +26,7 @@ class ChapterHtmlSlimParser {
   const std::string& filepath;
   GfxRenderer& renderer;
   std::function<void(std::unique_ptr<Page>)> completePageFn;
-  std::function<void()> popupFn;  // Popup callback
+  std::function<void(int)> progressFn;  // Progress callback (0-100)
   int depth = 0;
   int skipUntilDepth = INT_MAX;
   int boldUntilDepth = INT_MAX;
@@ -110,7 +110,8 @@ class ChapterHtmlSlimParser {
                                  const std::function<void(std::unique_ptr<Page>)>& completePageFn,
                                  const bool embeddedStyle, const std::string& contentBase,
                                  const std::string& imageBasePath, const uint8_t imageRendering = 0,
-                                 const std::function<void()>& popupFn = nullptr, const CssParser* cssParser = nullptr)
+                                 const std::function<void(int)>& progressFn = nullptr,
+                                 const CssParser* cssParser = nullptr)
 
       : epub(epub),
         filepath(filepath),
@@ -123,7 +124,7 @@ class ChapterHtmlSlimParser {
         viewportHeight(viewportHeight),
         hyphenationEnabled(hyphenationEnabled),
         completePageFn(completePageFn),
-        popupFn(popupFn),
+        progressFn(progressFn),
         cssParser(cssParser),
         embeddedStyle(embeddedStyle),
         imageRendering(imageRendering),