From 465cc029ffc788c9e110decc156a2c9cbca9264b Mon Sep 17 00:00:00 2001
From: Arthur Tazhitdinov <lisnake@gmail.com>
Date: Tue, 3 Feb 2026 17:09:42 +0300
Subject: [PATCH] feat: add screen rotation functionality to Epub reader menu

---
 src/activities/reader/EpubReaderActivity.cpp  | 34 +++++++++++++++++++
 .../reader/EpubReaderMenuActivity.h           |  3 +-
 2 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/src/activities/reader/EpubReaderActivity.cpp b/src/activities/reader/EpubReaderActivity.cpp
index 5ccfb4fe..8afa8205 100644
--- a/src/activities/reader/EpubReaderActivity.cpp
+++ b/src/activities/reader/EpubReaderActivity.cpp
@@ -268,6 +268,40 @@ void EpubReaderActivity::onReaderMenuConfirm(EpubReaderMenuActivity::MenuAction
       xSemaphoreGive(renderingMutex);
       break;
     }
+    case EpubReaderMenuActivity::MenuAction::ROTATE_SCREEN: {
+      xSemaphoreTake(renderingMutex, portMAX_DELAY);
+      if (section) {
+        cachedSpineIndex = currentSpineIndex;
+        cachedChapterTotalPageCount = section->pageCount;
+        nextPageNumber = section->currentPage;
+      }
+
+      SETTINGS.orientation = (SETTINGS.orientation + 1) % CrossPointSettings::ORIENTATION_COUNT;
+      SETTINGS.saveToFile();
+
+      switch (SETTINGS.orientation) {
+        case CrossPointSettings::ORIENTATION::PORTRAIT:
+          renderer.setOrientation(GfxRenderer::Orientation::Portrait);
+          break;
+        case CrossPointSettings::ORIENTATION::LANDSCAPE_CW:
+          renderer.setOrientation(GfxRenderer::Orientation::LandscapeClockwise);
+          break;
+        case CrossPointSettings::ORIENTATION::INVERTED:
+          renderer.setOrientation(GfxRenderer::Orientation::PortraitInverted);
+          break;
+        case CrossPointSettings::ORIENTATION::LANDSCAPE_CCW:
+          renderer.setOrientation(GfxRenderer::Orientation::LandscapeCounterClockwise);
+          break;
+        default:
+          break;
+      }
+
+      section.reset();
+      exitActivity();
+      updateRequired = true;
+      xSemaphoreGive(renderingMutex);
+      break;
+    }
     case EpubReaderMenuActivity::MenuAction::GO_HOME: {
       // 2. Trigger the reader's "Go Home" callback
       if (onGoHome) {
diff --git a/src/activities/reader/EpubReaderMenuActivity.h b/src/activities/reader/EpubReaderMenuActivity.h
index bd253f81..7f7566f6 100644
--- a/src/activities/reader/EpubReaderMenuActivity.h
+++ b/src/activities/reader/EpubReaderMenuActivity.h
@@ -13,7 +13,7 @@
 
 class EpubReaderMenuActivity final : public ActivityWithSubactivity {
  public:
-  enum class MenuAction { SELECT_CHAPTER, GO_HOME, DELETE_CACHE };
+  enum class MenuAction { SELECT_CHAPTER, ROTATE_SCREEN, GO_HOME, DELETE_CACHE };
 
   explicit EpubReaderMenuActivity(GfxRenderer& renderer, MappedInputManager& mappedInput, const std::string& title,
                                   const std::function<void()>& onBack, const std::function<void(MenuAction)>& onAction)
@@ -33,6 +33,7 @@ class EpubReaderMenuActivity final : public ActivityWithSubactivity {
   };
 
   const std::vector<MenuItem> menuItems = {{MenuAction::SELECT_CHAPTER, "Go to Chapter"},
+                                           {MenuAction::ROTATE_SCREEN, "Rotate Screen"},
                                            {MenuAction::GO_HOME, "Go Home"},
                                            {MenuAction::DELETE_CACHE, "Delete Book Cache"}};