#include <SFML/Graphics.hpp>
#include <iostream>
#include <cmath>

int main()
{
    sf::RenderWindow window(sf::VideoMode(800, 600, 32), "test");
    sf::Event event;
    sf::Texture texture;
    sf::Sprite sprite;
    sf::Vector2f scale;

    if (!texture.loadFromFile("gradient.png"))
    {
        std::cout << "Texture loading failed.\n";
        return -1;
    }
    sprite.setTexture(texture);
    scale.x = window.getSize().x;
    scale.y = window.getSize().y;
    scale.x /= texture.getSize().x;
    scale.y /= texture.getSize().y;
    sprite.setScale(scale);

    while (window.isOpen())
    {
        while (window.pollEvent(event))
        {
            switch (event.type)
            {
            case sf::Event::Closed:
                window.close();
                break;
            case sf::Event::Resized:
                scale.x = event.size.width;
                scale.y = event.size.height;
                scale.x /= texture.getSize().x;
                scale.y /= texture.getSize().y;
                sprite.setScale(scale);

                std::cout << "Size: " << event.size.width << "x" << event.size.height << std::endl;
                std::cout << "Scale: " << scale.x << "x" << scale.y << std::endl;
                break;
            default:
                break;
            }
        }

        window.clear(sf::Color(128, 0, 0));
        window.draw(sprite);
        window.display();
    }

    return 0;
}