Improvements to indicators and button interaction

src/ScreenComponents.cpp

@@ -99,19 +99,18 @@ void ScreenComponents::drawScrollIndicator(const GfxRenderer &renderer,
       contentTop + 60; // Offset to avoid overlapping side button hints
   const int indicatorBottom = contentTop + contentHeight - 30;
 
-  // Draw up arrow at top (triangle pointing up - wide at bottom, narrow at top)
+  // Draw up arrow at top (^) - narrow point at top, wide base at bottom
   for (int i = 0; i < arrowSize; ++i) {
-    const int lineWidth = 1 + (arrowSize - 1 - i) * 2;
+    const int lineWidth = 1 + i * 2;
-    const int startX = centerX - (arrowSize - 1 - i);
+    const int startX = centerX - i;
     renderer.drawLine(startX, indicatorTop + i, startX + lineWidth - 1,
                       indicatorTop + i);
   }
 
-  // Draw down arrow at bottom (triangle pointing down - narrow at top, wide at
+  // Draw down arrow at bottom (v) - wide base at top, narrow point at bottom
-  // bottom)
   for (int i = 0; i < arrowSize; ++i) {
-    const int lineWidth = 1 + i * 2;
+    const int lineWidth = 1 + (arrowSize - 1 - i) * 2;
-    const int startX = centerX - i;
+    const int startX = centerX - (arrowSize - 1 - i);
     renderer.drawLine(startX, indicatorBottom - arrowSize + 1 + i,
                       startX + lineWidth - 1,
                       indicatorBottom - arrowSize + 1 + i);

src/activities/home/MyLibraryActivity.cpp

@@ -269,25 +269,23 @@ void MyLibraryActivity::loop() {
     return;
   }
 
-  // Tab switching: Left/Right when selectorIndex == 0
+  // Tab switching: Left/Right always control tabs
-  if (selectorIndex == 0) {
+  if (leftReleased && currentTab == Tab::Files) {
-    if (leftReleased && currentTab == Tab::Files) {
+    currentTab = Tab::Recent;
-      currentTab = Tab::Recent;
+    selectorIndex = 0;
-      selectorIndex = 0;
+    updateRequired = true;
-      updateRequired = true;
+    return;
-      return;
+  }
-    }
+  if (rightReleased && currentTab == Tab::Recent) {
-    if (rightReleased && currentTab == Tab::Recent) {
+    currentTab = Tab::Files;
-      currentTab = Tab::Files;
+    selectorIndex = 0;
-      selectorIndex = 0;
+    updateRequired = true;
-      updateRequired = true;
+    return;
-      return;
-    }
   }
 
-  // Navigation: Up/Down moves through items, Left/Right also work as prev/next
+  // Navigation: Up/Down moves through items only
-  const bool prevReleased = upReleased || leftReleased;
+  const bool prevReleased = upReleased;
-  const bool nextReleased = downReleased || rightReleased;
+  const bool nextReleased = downReleased;
 
   if (prevReleased && itemCount > 0) {
     if (skipPage) {

src/activities/home/MyLibraryActivity.h

@@ -10,10 +10,10 @@
 #include "../Activity.h"
 
 class MyLibraryActivity final : public Activity {
- public:
+public:
   enum class Tab { Recent, Files };
 
- private:
+private:
   TaskHandle_t displayTaskHandle = nullptr;
   SemaphoreHandle_t renderingMutex = nullptr;
 
@@ -22,8 +22,9 @@ class MyLibraryActivity final : public Activity {
   bool updateRequired = false;
 
   // Recent tab state (from RecentBooksActivity)
-  std::vector<std::string> bookTitles;  // Display titles for each book
+  std::vector<std::string> bookTitles; // Display titles for each book
-  std::vector<std::string> bookPaths;   // Paths for each visible book (excludes missing)
+  std::vector<std::string>
+      bookPaths; // Paths for each visible book (excludes missing)
 
   // Files tab state (from FileSelectionActivity)
   std::string basepath = "/";
@@ -31,7 +32,7 @@ class MyLibraryActivity final : public Activity {
 
   // Callbacks
   const std::function<void()> onGoHome;
-  const std::function<void(const std::string& path)> onSelectBook;
+  const std::function<void(const std::string &path)> onSelectBook;
 
   // Number of items that fit on a page
   int getPageItems() const;
@@ -44,21 +45,20 @@ class MyLibraryActivity final : public Activity {
   void loadFiles();
 
   // Rendering
-  static void taskTrampoline(void* param);
+  static void taskTrampoline(void *param);
   [[noreturn]] void displayTaskLoop();
   void render() const;
   void renderRecentTab() const;
   void renderFilesTab() const;
 
- public:
+public:
-  explicit MyLibraryActivity(GfxRenderer& renderer, MappedInputManager& mappedInput,
+  explicit MyLibraryActivity(
-                             const std::function<void()>& onGoHome,
+      GfxRenderer &renderer, MappedInputManager &mappedInput,
-                             const std::function<void(const std::string& path)>& onSelectBook,
+      const std::function<void()> &onGoHome,
-                             Tab initialTab = Tab::Recent)
+      const std::function<void(const std::string &path)> &onSelectBook,
-      : Activity("MyLibrary", renderer, mappedInput),
+      Tab initialTab = Tab::Recent)
-        currentTab(initialTab),
+      : Activity("MyLibrary", renderer, mappedInput), currentTab(initialTab),
-        onGoHome(onGoHome),
+        onGoHome(onGoHome), onSelectBook(onSelectBook) {}
-        onSelectBook(onSelectBook) {}
   void onEnter() override;
   void onExit() override;
   void loop() override;