display_device.h

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#pragma once
 
#include "pico/stdlib.h"
#include "sw/widget/canvas.h"
 
#include "FreeRTOS.h"
#include "task.h"
#include "queue.h"
#include "semphr.h"

enum class DisplayCommand
{
    CLEAR_SCREEN,
    SHOW_IMAGE
};

class DisplayDevice
{
private:
    /* data */
public:
    DisplayDevice(/* args */);
    virtual ~DisplayDevice();
};
 
class rtos_DisplayDevice;
class rtos_Widget;

struct struct_WidgetDataToGateKeeper
{
    DisplayCommand command{DisplayCommand::SHOW_IMAGE};
    rtos_DisplayDevice *display = nullptr;
    rtos_Widget *widget = nullptr;
};

class GraphicDisplayDevice : public DisplayDevice
{
protected:
public:
    size_t TFT_panel_width_in_pixel;
    size_t TFT_panel_height_in_pixel;

    virtual void check_display_device_compatibility(struct_ConfigGraphicWidget framebuffer_cfg, CanvasFormat canvas_format) = 0;

    virtual void show(Canvas *canvas, const uint8_t anchor_x, const uint8_t anchor_y) = 0;

    GraphicDisplayDevice(size_t screen_width,
                         size_t screen_height);

    virtual ~GraphicDisplayDevice();
};

class TerminalConsole : public DisplayDevice
{
private:
public:
    size_t number_of_column;
    size_t number_of_line;
    size_t text_buffer_size;
    char *text_buffer = nullptr;

    TerminalConsole(size_t number_of_char_width,
                    size_t number_of_char_hieght);
    virtual ~TerminalConsole();

    virtual void show();
};

class rtos_DisplayDevice
{
private:
    /* data */
public:
    SemaphoreHandle_t display_device_mutex;
    rtos_DisplayDevice(/* args */);
    ~rtos_DisplayDevice();

    virtual void show_widget(rtos_Widget *widget_to_show) = 0;

    virtual void clear_device_screen_buffer() = 0;
};

class rtos_GraphicDisplayDevice : public rtos_DisplayDevice
{
private:
    /* data */
public:
    rtos_GraphicDisplayDevice(/* args */);
    ~rtos_GraphicDisplayDevice();

    virtual void check_rtos_display_device_compatibility(struct_ConfigGraphicWidget framebuffer_cfg, CanvasFormat canvas_format) = 0;
};

class rtos_TerminalConsole : public rtos_DisplayDevice
{
private:
    /* data */
public:
    size_t number_of_column;
    size_t number_of_line;
    size_t text_buffer_size;

    void show_widget(rtos_Widget *widget_to_show);

    void clear_device_screen_buffer();

    rtos_TerminalConsole(size_t number_of_char_width,
                         size_t number_of_char_hight);
    virtual ~rtos_TerminalConsole();
};

class rtos_GraphicDisplayGateKeeper
{
private:
    SemaphoreHandle_t data_sent; // pour attendre la fin d'utilisation de la resource bus / display
public:
    QueueHandle_t graphic_widget_data;

    rtos_GraphicDisplayGateKeeper(/* args */);  
    ~rtos_GraphicDisplayGateKeeper();
    void send_clear_device_command(rtos_GraphicDisplayDevice *device);
    void send_widget_data(rtos_Widget *widget);
    void receive_widget_data(struct_WidgetDataToGateKeeper received_widget_data);
};