gui.hpp

#ifndef GUI_HPP
#define GUI_HPP

#include <vector>
#include <utility>
#include <string>

class GuiStyle
{
    public:

    sf::Color bodyCol;
    sf::Color bodyHighlightCol;
    sf::Color borderCol;
    sf::Color borderHighlightCol;
    sf::Color textCol;
    sf::Color textHighlightCol;
    sf::Font* font;

    float borderSize;

    GuiStyle(sf::Font* font, float borderSize,
        sf::Color bodyCol, sf::Color borderCol, sf::Color textCol,
        sf::Color bodyHighlightCol, sf::Color borderHighlightCol, sf::Color textHighlightCol)
    {
        this->bodyCol = bodyCol;
        this->borderCol = borderCol;
        this->textCol = textCol;
        this->bodyHighlightCol = bodyHighlightCol;
        this->borderHighlightCol = borderHighlightCol;
        this->textHighlightCol = textHighlightCol;
        this->font = font;
        this->borderSize = borderSize;
    }
    GuiStyle() { }
};

class GuiEntry
{
    public:

    /* Handles appearance of the entry */
    sf::RectangleShape shape;

    /* String returned when the entry is activated */
    std::string message;

    /* Text displayed on the entry */
    sf::Text text;

    GuiEntry(const std::string& message, sf::RectangleShape shape, sf::Text text)
    {
        this->message = message;
        this->shape = shape;
        this->text = text;
    }
    GuiEntry() { }
};

class Gui : public sf::Transformable, public sf::Drawable
{
    private:

    /* If true the menu entries will be horizontally, not vertically, adjacent */
    bool horizontal;

    GuiStyle style;

    sf::Vector2f dimensions;

    int padding;

    public:

    std::vector<GuiEntry> entries;

    bool visible;

    /* Constructor */
    Gui(sf::Vector2f dimensions, int padding, bool horizontal,
        GuiStyle& style, std::vector<std::pair<std::string, std::string>> entries)
    {
        visible = false;
        this->horizontal = horizontal;
        this->style = style;
        this->dimensions = dimensions;
        this->padding = padding;

        /* Construct the background shape */
        sf::RectangleShape shape;
        shape.setSize(dimensions);
        shape.setFillColor(style.bodyCol);
        shape.setOutlineThickness(-style.borderSize);
        shape.setOutlineColor(style.borderCol);

        /* Construct each gui entry */
        for(auto entry : entries)
        {
            /* Construct the text */
            sf::Text text;
            text.setString(entry.first);
            text.setFont(*style.font);
            text.setColor(style.textCol);
            text.setCharacterSize(dimensions.y-style.borderSize-padding);

            this->entries.push_back(GuiEntry(entry.second, shape, text));
        }
    }

    sf::Vector2f getSize();

    /* Return the entry that the mouse is hovering over. Returns
     * -1 if the mouse if outside of the Gui */
    int getEntry(const sf::Vector2f mousePos);

    /* Change the text of an entry */
    void setEntryText(int entry, std::string text);

    /* Change the entry dimensions */
    void setDimensions(sf::Vector2f dimensions);

    /* Draw the menu */
    virtual void draw(sf::RenderTarget& target, sf::RenderStates states) const;

    void show();

    void hide();

    /* Highlights an entry of the menu */
    void highlight(const int entry);

    /* Return the message bound to the entry */
    std::string activate(const int entry);
    std::string activate(const sf::Vector2f mousePos);
};

#endif /* GUI_HPP */