#pragma once #include "lvgl.h" namespace tt::hal { class Touch; class Display { public: virtual bool start() = 0; virtual bool stop() = 0; virtual void setPowerOn(bool turnOn) {} virtual bool isPoweredOn() const { return true; } virtual bool supportsPowerControl() const { return false; } virtual Touch* _Nullable createTouch() = 0; /** Set a value in the range [0, 255] */ virtual void setBacklightDuty(uint8_t backlightDuty) { /* NO-OP */ } virtual bool supportsBacklightDuty() const { return false; } /** Set a value in the range [0, 255] */ virtual void setGammaCurve(uint8_t index) { /* NO-OP */ } virtual uint8_t getGammaCurveCount() const { return 0; }; /** After start() returns true, this should return a valid pointer until stop() is called and returns true */ virtual lv_display_t* _Nullable getLvglDisplay() const = 0; }; }