touch.hpp

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// SPDX-License-Identifier: Apache-2.0
// Copyright 2026 Chris Leishman
 
#pragma once
 
#include <idfxx/gpio>
 
#include <cstdint>
#include <functional>
 
struct esp_lcd_touch_s;
typedef struct esp_lcd_touch_s esp_lcd_touch_t;
typedef esp_lcd_touch_t* esp_lcd_touch_handle_t;
 
namespace idfxx::lcd {
 
class touch {
public:
    typedef std::move_only_function<
        void(uint16_t* x, uint16_t* y, uint16_t* strength, uint8_t* point_num, uint8_t max_point_num)>
        process_coordinates_callback;
 
    struct config {
        uint16_t x_max = 0; 
        uint16_t y_max = 0; 
 
        gpio rst_gpio = gpio::nc(); 
        gpio int_gpio = gpio::nc(); 
 
        struct {
            gpio::level reset = gpio::level::low;     
            gpio::level interrupt = gpio::level::low; 
        } levels = {};
 
        struct {
            unsigned int swap_xy : 1 = 0;  
            unsigned int mirror_x : 1 = 0; 
            unsigned int mirror_y : 1 = 0; 
        } flags = {};
 
        process_coordinates_callback process_coordinates = nullptr;
    };
 
    virtual ~touch() = default;
 
    touch(const touch&) = delete;
    touch& operator=(const touch&) = delete;
 
    [[nodiscard]] virtual esp_lcd_touch_handle_t idf_handle() const = 0;
 
protected:
    touch() = default;
};
 
} // namespace idfxx::lcd