Demo for SFML text outline feature

SFML TextOutline Demo.cpp

// Jan Haller, 20.09.2015
#include <SFML/Graphics.hpp>
#include <locale>
#include <cmath>

int main()
{
    sf::RenderWindow window({1000, 600}, "Outline test");
    window.setVerticalSyncEnabled(true);

    sf::Font font;
    font.loadFromFile("C:/Windows/Fonts/arial.ttf");

    const std::locale loc("");
    sf::String string;
    unsigned int style = 0;
    float thickness = 4.f;

    sf::Text text("Simple editor!\nF1-F4:  style\nF5, F6:  outline", font, 100u);
    text.setPosition({20.f, 20.f});
    text.setFillColor(sf::Color::Blue);
    text.setOutlineColor(sf::Color::White);
    text.setOutlineThickness(thickness);

    for (;;)
    {
        sf::Event e;
        while (window.pollEvent(e))
        {
            if (e.type == sf::Event::Closed)
            {
                return 0;
            }
            else if (e.type == sf::Event::TextEntered)
            {
                sf::Uint32 ch = e.text.unicode;
                switch (ch)
                {
                    case '\b':
                        if (!string.isEmpty())
                            string.erase(string.getSize() - 1);
                        break;

                    case '\r':
                        string += '\n';
                        break;

                    default: 
                        if (std::isprint(ch, loc) || std::isblank(ch, loc) || std::isalnum(ch, loc))
                            string += ch;
                }

                text.setString(string);
            }
            else if (e.type == sf::Event::KeyPressed)
            {
                switch (e.key.code)
                {
                    case sf::Keyboard::F1:      style ^= sf::Text::Bold;                        break;
                    case sf::Keyboard::F2:      style ^= sf::Text::Italic;                      break;
                    case sf::Keyboard::F3:      style ^= sf::Text::Underlined;                  break;
                    case sf::Keyboard::F4:      style ^= sf::Text::StrikeThrough;               break;
                    case sf::Keyboard::F5:      thickness = std::min(thickness + 0.2f, 10.f);   break;
                    case sf::Keyboard::F6:      thickness = std::max(thickness - 0.2f, 0.f);    break;
                    case sf::Keyboard::Escape:  return 0;
                }

                text.setStyle(style);
                text.setOutlineThickness(thickness);
            }
        }

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