SFML Cursor API

main.cpp

#include <SFML/Graphics.hpp>

struct Cursor
{
    Cursor() :
        changed{ false },
        current{ sf::Cursor::Arrow }
    {
        arrow.loadFromSystem(sf::Cursor::Arrow);
        hand.loadFromSystem(sf::Cursor::Hand);
        text.loadFromSystem(sf::Cursor::Text);
    }

    void set_type(const sf::Cursor::Type type)
    {
        changed = (current != type);
        current = type;
    }

    bool has_changed() const
    {
        return changed;
    }

    const sf::Cursor& get_current() const
    {
        changed = false;

        if (current == sf::Cursor::Arrow)
            return arrow;
        else if (current == sf::Cursor::Hand)
            return hand;
        else
            return text;
    }

private:
    sf::Cursor arrow;
    sf::Cursor hand;
    sf::Cursor text;
    mutable bool changed;
    sf::Cursor::Type current;
};

int main()
{
    sf::RenderWindow window{ {1280, 720}, "Cursors!" };
    window.setFramerateLimit(60);

    Cursor cursors;

    while (window.isOpen())
    {
        for (sf::Event event; window.pollEvent(event);)
        {
            if (event.type == sf::Event::Closed)
            {
                window.close();
            }
            else if (event.type == sf::Event::KeyReleased)
            {
                if (event.key.code == sf::Keyboard::Left)
                {
                    cursors.set_type(sf::Cursor::Hand);
                }
                else if (event.key.code == sf::Keyboard::Right)
                {
                    cursors.set_type(sf::Cursor::Arrow);
                }
            }
        }

        if (cursors.has_changed())
        {
            window.setMouseCursor(cursors.get_current());
        }

        window.clear();
        window.display();
    }
}