crosspoint-reader/src/activities/boot_sleep/SleepActivity.h

#pragma once
#include "../Activity.h"

#include <Bitmap.h>

#include <string>

class SleepActivity final : public Activity {
 public:
  explicit SleepActivity(GfxRenderer& renderer, MappedInputManager& mappedInput)
      : Activity("Sleep", renderer, mappedInput) {}
  void onEnter() override;

 private:
  void renderPopup(const char* message) const;
  void renderDefaultSleepScreen() const;
  void renderCustomSleepScreen() const;
  void renderCoverSleepScreen() const;
  void renderBitmapSleepScreen(const Bitmap& bitmap, const std::string& bmpPath) const;
  void renderBlankSleepScreen() const;

  // Edge luminance caching helpers
  static std::string getEdgeCachePath(const std::string& bmpPath);
  EdgeLuminance getEdgeLuminance(const Bitmap& bitmap, const std::string& bmpPath) const;

  // Book-level edge cache helpers (for skipping book metadata loading)
  static std::string getBookEdgeCachePath(const std::string& bookPath);
  static std::string getCoverBmpPath(const std::string& cacheDir, const std::string& bookPath, bool cropped);
  bool tryRenderCachedCoverSleep(const std::string& bookPath, bool cropped) const;

  // Quantize luminance (0-255) to 4-level grayscale (0-3)
  static uint8_t quantizeGray(uint8_t lum);
};