TouchGFX/gui/include/gui/containers/MenuElement.hpp

#ifndef MENUELEMENT_HPP
#define MENUELEMENT_HPP

#include <gui_generated/containers/MenuElementBase.hpp>
#include <BitmapDatabase.hpp>

class MenuElement : public MenuElementBase
{
public:
    MenuElement();
    virtual ~MenuElement() {}

    virtual void initialize();

    void setNumber(int no)
    {
        Unicode::itoa(no, textBuffer, TEXT_SIZE, 10);
        switch (no % 7)
        {
        case 0:
        icon.setBitmap(Bitmap(BITMAP_ICON00_ID));
            break;
        case 1:
        icon.setBitmap(Bitmap(BITMAP_ICON01_ID));
            break;
        case 2:
        icon.setBitmap(Bitmap(BITMAP_ICON02_ID));
            break;
        case 3:
        icon.setBitmap(Bitmap(BITMAP_ICON03_ID));
            break;
        case 4:
        icon.setBitmap(Bitmap(BITMAP_ICON04_ID));
            break;
        case 5:
        icon.setBitmap(Bitmap(BITMAP_ICON05_ID));
            break;
        case 6:
        icon.setBitmap(Bitmap(BITMAP_ICON06_ID));
            break;
        }
    }
protected:
};

#endif // MENUELEMENT_HPP


Screen1View.hpp

#ifndef SCREEN1VIEW_HPP
#define SCREEN1VIEW_HPP

#include <gui_generated/screen1_screen/Screen1ViewBase.hpp>
#include <gui/screen1_screen/Screen1Presenter.hpp>

class Screen1View : public Screen1ViewBase
{
public:
    Screen1View();
    virtual ~Screen1View() {}
    virtual void setupScreen();
    virtual void tearDownScreen();
    virtual void scrollWheelUpdateItem(MenuElement& item, int16_t itemIndex)
    {
        item.setNumber(itemIndex);
    }
protected:
};

#endif // SCREEN1VIEW_HPP


MenuElement.hpp

#ifndef MENUELEMENT_HPP
#define MENUELEMENT_HPP

#include <gui_generated/containers/MenuElementBase.hpp>
#include <BitmapDatabase.hpp>
#include <math.h>

class MenuElement : public MenuElementBase
{
public:
    MenuElement();
    virtual ~MenuElement() {}

    virtual void initialize();

    //Adjusts the position of the text and the icon, based in the calculated offset(x)
    void offset(int16_t x)
    {
        icon.setX(30 + x);
        text.setX(80 + x);
    }

    //The new declaration and implementation of the setY() function
    virtual void setY(int16_t y)
    {
        //set Y as normal
        MenuElementBase::setY(y);

        const int circleRadius = 250;

        //center around middle of background
        y = y + getHeight() / 2 - 390 /2;

        //calculate x
        float x_f = circleRadius - sqrtf((float)((circleRadius * circleRadius) - (y * y)));
        int16_t x = (int16_t)(x_f + 0.5f);

        offset(x);
    }

    ...