Method render

src/activities/home/HomeActivity.cpp:210–271

}

void HomeActivity::render(RenderLock&&) {
  const auto& metrics = UITheme::getInstance().getMetrics();
  const auto pageWidth = renderer.getScreenWidth();
  const auto pageHeight = renderer.getScreenHeight();

  renderer.clearScreen();
  bool bufferRestored = coverBufferStored && restoreCoverBuffer();

  GUI.drawHeader(renderer, Rect{0, metrics.topPadding, pageWidth, metrics.homeTopPadding},
                 metrics.homeContinueReadingInMenu && !recentBooks.empty() ? recentBooks[0].title.c_str() : nullptr);

  // Record the tile rect so storeCoverBuffer (called from the theme) knows
  // which sub-region of the framebuffer to snapshot. ~16 KB in Portrait
  // instead of the 48 KB full framebuffer the previous bind captured.
  coverRectX = 0;
  coverRectY = metrics.homeTopPadding;
  coverRectW = pageWidth;
  coverRectH = metrics.homeCoverTileHeight;

  GUI.drawRecentBookCover(renderer, Rect{0, metrics.homeTopPadding, pageWidth, metrics.homeCoverTileHeight},
                          recentBooks, selectorIndex, coverRendered, coverBufferStored, bufferRestored,
                          std::bind(&HomeActivity::storeCoverBuffer, this));

  // Build menu items dynamically
  std::vector<const char*> menuItems = {tr(STR_BROWSE_FILES), tr(STR_MENU_RECENT_BOOKS), tr(STR_FILE_TRANSFER),
                                        tr(STR_SETTINGS_TITLE)};
  std::vector<UIIcon> menuIcons = {Folder, Recent, Transfer, Settings};

  if (hasOpdsServers) {
    menuItems.insert(menuItems.begin() + 2, tr(STR_OPDS_BROWSER));
    menuIcons.insert(menuIcons.begin() + 2, Library);
  }

  if (metrics.homeContinueReadingInMenu && !recentBooks.empty()) {
    // Insert Continue Reading at the top if enabled in theme
    menuItems.insert(menuItems.begin(), tr(STR_CONTINUE_READING));
    menuIcons.insert(menuIcons.begin(), Book);
  }

  GUI.drawButtonMenu(
      renderer,
      Rect{0, metrics.homeTopPadding + metrics.homeCoverTileHeight + metrics.homeMenuTopOffset, pageWidth,
           pageHeight - (metrics.headerHeight + metrics.homeTopPadding + metrics.verticalSpacing +
                         metrics.homeMenuTopOffset + metrics.buttonHintsHeight)},
      static_cast<int>(menuItems.size()),
      metrics.homeContinueReadingInMenu ? selectorIndex : selectorIndex - recentBooks.size(),
      [&menuItems](int index) { return std::string(menuItems[index]); },
      [&menuIcons](int index) { return menuIcons[index]; });

  const auto labels = mappedInput.mapLabels("", tr(STR_SELECT), tr(STR_DIR_UP), tr(STR_DIR_DOWN));
  GUI.drawButtonHints(renderer, labels.btn1, labels.btn2, labels.btn3, labels.btn4);

  renderer.displayBuffer();

  if (!firstRenderDone) {
    firstRenderDone = true;
    requestUpdate();
  } else if (!recentsLoaded && !recentsLoading) {