display_manager.h

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#pragma once
 
#include "ersa/common/types.h"
#include "ersa/hal/display.h"
#include <stdint.h>
 
namespace ersa {
namespace services {
 
class DisplayManager {
public:
    static constexpr uint32_t MIN_REFRESH_INTERVAL_MS = 500;
    static constexpr uint16_t FULL_REFRESH_FRAME_COUNT = 360;
 
    explicit DisplayManager(hal::IDisplay& display);
 
    Result<void> init();
    void tick(uint32_t currentUptimeMs);
 
    void markDirty(bool fullRefresh = false);
    bool isDirty() const;
 
    // Trigger a refresh if dirty and interval has elapsed
    bool updateIfDirty(uint32_t currentUptimeMs);
 
    // Explicit force refresh
    void refresh(bool full = false, uint32_t currentUptimeMs = 0);
 
    void refreshRect(const Rect& bounds, bool forceFull, uint32_t currentUptimeMs);
 
    uint16_t getPartialFrameCount() const;
    void resetPartialFrameCount();
 
    hal::IDisplay& getDisplay();
 
    static DisplayManager& instance();
    static void setInstance(DisplayManager* instance);
 
private:
    hal::IDisplay& display_;
    bool dirty_{true};
    bool fullNeeded_{true};
    uint16_t partialFrames_{0};
    uint32_t lastRefreshTime_{0};
};
 
} // namespace services
} // namespace ersa