Add sleep screen information overlay

src/activities/boot_sleep/SleepActivity.cpp

@@ -137,6 +137,133 @@ void SleepActivity::renderDefaultSleepScreen() const {
   renderer.displayBuffer(HalDisplay::HALF_REFRESH);
 }
 
+std::string SleepActivity::getBookOverlayText(const std::string& bookPath) const {
+  std::string title;
+  std::string author;
+  std::string progressLine = "Reading...";  // Default progress text
+
+  // Extract metadata based on file type
+  if (StringUtils::checkFileExtension(bookPath, ".xtc") || StringUtils::checkFileExtension(bookPath, ".xtch")) {
+    // Handle XTC file
+    Xtc xtc(bookPath, "/.crosspoint");
+    if (xtc.load()) {
+      title = xtc.getTitle();
+      author = xtc.getAuthor();
+
+      // Load progress - XTC stores current page
+      FsFile f;
+      if (Storage.openFileForRead("SLP", xtc.getCachePath() + "/progress.bin", f)) {
+        uint8_t data[4];
+        if (f.read(data, 4) == 4) {
+          uint32_t currentPage = data[0] + (data[1] << 8) + (data[2] << 16) + (data[3] << 24);
+          uint32_t totalPages = xtc.getPageCount();
+          float progress = xtc.calculateProgress(currentPage) * 100.0f;
+          char progressStr[32];
+          snprintf(progressStr, sizeof(progressStr), "%lu/%u %.0f%%", (unsigned long)currentPage + 1, totalPages,
+                   progress);
+          progressLine = progressStr;
+        }
+        f.close();
+      }
+    }
+  } else if (StringUtils::checkFileExtension(bookPath, ".txt")) {
+    // Handle TXT file
+    Txt txt(bookPath, "/.crosspoint");
+    if (txt.load()) {
+      title = txt.getTitle();
+      // TXT files don't have author metadata
+
+      // Load progress - TXT stores current page
+      FsFile f;
+      if (Storage.openFileForRead("SLP", txt.getCachePath() + "/progress.bin", f)) {
+        uint8_t data[4];
+        if (f.read(data, 4) == 4) {
+          uint32_t currentPage = data[0] + (data[1] << 8);
+
+          // Load total pages from page index cache
+          uint32_t totalPages = 0;
+          FsFile indexFile;
+          if (Storage.openFileForRead("SLP", txt.getCachePath() + "/index.bin", indexFile)) {
+            // Read numPages directly (it's at a fixed offset after headers)
+            // Skip: magic(4) + version(4) + fileSize(4) + cachedWidth(4) + cachedLines(4) + fontId(4) + margin(4) +
+            // alignment(4) = 32 bytes
+            indexFile.seek(32);
+            if (indexFile.read(reinterpret_cast<uint8_t*>(&totalPages), sizeof(totalPages)) == sizeof(totalPages)) {
+              // Successfully read totalPages
+            }
+            indexFile.close();
+          }
+
+          if (totalPages > 0) {
+            float progress = (currentPage + 1) * 100.0f / totalPages;
+            char progressStr[32];
+            snprintf(progressStr, sizeof(progressStr), "%lu/%u %.0f%%", (unsigned long)currentPage + 1, totalPages,
+                     progress);
+            progressLine = progressStr;
+          } else {
+            char progressStr[16];
+            snprintf(progressStr, sizeof(progressStr), "Page %lu", (unsigned long)currentPage + 1);
+            progressLine = progressStr;
+          }
+        }
+        f.close();
+      }
+    }
+  } else if (StringUtils::checkFileExtension(bookPath, ".epub")) {
+    // Handle EPUB file
+    Epub epub(bookPath, "/.crosspoint");
+    if (epub.load(true, true)) {  // Skip CSS loading for metadata only
+      title = epub.getTitle();
+      author = epub.getAuthor();
+
+      // Load progress and get chapter information
+      FsFile f;
+      if (Storage.openFileForRead("SLP", epub.getCachePath() + "/progress.bin", f)) {
+        uint8_t data[6];
+        if (f.read(data, 6) == 6) {
+          int currentSpineIndex = data[0] + (data[1] << 8);
+          int currentPage = data[2] + (data[3] << 8);
+          int pageCount = data[4] + (data[5] << 8);
+          if (pageCount > 0) {
+            float chapterProgress = static_cast<float>(currentPage) / static_cast<float>(pageCount);
+            float bookProgress = epub.calculateProgress(currentSpineIndex, chapterProgress) * 100.0f;
+
+            // Get chapter name from TOC
+            const int tocIndex = epub.getTocIndexForSpineIndex(currentSpineIndex);
+            std::string chapterName;
+            if (tocIndex == -1) {
+              chapterName = "Unnamed Chapter";
+            } else {
+              const auto tocItem = epub.getTocItem(tocIndex);
+              chapterName = tocItem.title;
+            }
+
+            // Create chapter info line with chapter name and progress
+            char chapterProgressStr[128];
+            snprintf(chapterProgressStr, sizeof(chapterProgressStr), "%s: %d/%d %.0f%%", chapterName.c_str(),
+                     currentPage + 1, pageCount, bookProgress);
+            progressLine = chapterProgressStr;
+          }
+        }
+        f.close();
+      }
+    }
+  }
+
+  // Format overlay text (two lines)
+  std::string overlayText;
+  if (!title.empty()) {
+    overlayText = title;
+    if (!author.empty()) {
+      overlayText += " - " + author;
+    }
+    overlayText += "\n";  // New line
+    overlayText += progressLine;
+  }
+
+  return overlayText;
+}
+
 void SleepActivity::renderBitmapSleepScreen(const Bitmap& bitmap) const {
   int x, y;
   const auto pageWidth = renderer.getScreenWidth();
@@ -189,6 +316,38 @@ void SleepActivity::renderBitmapSleepScreen(const Bitmap& bitmap) const {
     renderer.invertScreen();
   }
 
+  // Draw overlay text if provided
+  const std::string overlayText = SETTINGS.sleepCoverOverlay ? getBookOverlayText(APP_STATE.openEpubPath) : "";
+  if (!overlayText.empty()) {
+    // Split text into lines
+    size_t newlinePos = overlayText.find('\n');
+    std::string line1 = (newlinePos != std::string::npos) ? overlayText.substr(0, newlinePos) : overlayText;
+    std::string line2 = (newlinePos != std::string::npos && newlinePos + 1 < overlayText.length())
+                            ? overlayText.substr(newlinePos + 1)
+                            : "";
+
+    // Truncate lines if too long for the screen
+    line1 = renderer.truncatedText(UI_10_FONT_ID, line1.c_str(), pageWidth - 20);
+    line2 = renderer.truncatedText(UI_10_FONT_ID, line2.c_str(), pageWidth - 20);
+
+    // Draw semi-transparent background rectangle at the bottom (taller for two lines)
+    const int overlayHeight = 50;
+    const int overlayY = pageHeight - overlayHeight - 20;             // Position 20 pixels higher from bottom
+    renderer.fillRect(0, overlayY, pageWidth, overlayHeight, false);  // White background
+
+    // First line - positioned higher in the overlay
+    const int line1Y = overlayY + 18;  // Position higher up
+    const int textX1 = (pageWidth - renderer.getTextWidth(UI_10_FONT_ID, line1.c_str())) / 2;
+    renderer.drawText(UI_10_FONT_ID, textX1, line1Y, line1.c_str(), true);  // Black text
+
+    // Second line - positioned lower in the overlay
+    if (!line2.empty()) {
+      const int line2Y = overlayY + 38;  // Position lower down with more space
+      const int textX2 = (pageWidth - renderer.getTextWidth(UI_10_FONT_ID, line2.c_str())) / 2;
+      renderer.drawText(UI_10_FONT_ID, textX2, line2Y, line2.c_str(), true);  // Black text
+    }
+  }
+
   renderer.displayBuffer(HalDisplay::HALF_REFRESH);
 
   if (hasGreyscale) {