gui.cpp

#include <SFML/Graphics.hpp>
#include <string>

#include "gui.hpp"

sf::Vector2f Gui::getSize()
{
    return sf::Vector2f(this->dimensions.x, this->dimensions.y * this->entries.size());
}

int Gui::getEntry(const sf::Vector2f mousePos)
{
    /* If there are no entries then outside the menu */
    if(entries.size() == 0) return -1;
    if(!this->visible) return -1;

    for(int i = 0; i < this->entries.size(); ++i)
    {
        /* Translate point to use the entry's local coordinates*/
        sf::Vector2f point = mousePos;
        point += this->entries[i].shape.getOrigin();
        point -= this->entries[i].shape.getPosition();

        if(point.x < 0 || point.x > this->entries[i].shape.getScale().x*this->dimensions.x) continue;
        if(point.y < 0 || point.y > this->entries[i].shape.getScale().y*this->dimensions.y) continue;
        return i;
    }

    return -1;
}

void Gui::setEntryText(int entry, std::string text)
{
    if(entry >= entries.size() || entry < 0) return;

    entries[entry].text.setString(text);

    return;
}

void Gui::setDimensions(sf::Vector2f dimensions)
{
    this->dimensions = dimensions;

    for(auto& entry : entries)
    {
        entry.shape.setSize(dimensions);
        entry.text.setCharacterSize(dimensions.y-style.borderSize-padding);
    }

    return;
}

void Gui::draw(sf::RenderTarget& target, sf::RenderStates states) const
{
    if(!visible) return;

    /* Draw each entry of the menu */
    for(auto entry : this->entries)
    {
        /* Draw the entry */
        target.draw(entry.shape);
        target.draw(entry.text);
    }

    return;
}

void Gui::show()
{
    sf::Vector2f offset(0.0f, 0.0f);

    this->visible = true;

    /* Draw each entry of the menu */
    for(auto& entry : this->entries)
    {
        /* Set the origin of the entry */
        sf::Vector2f origin = this->getOrigin();
        origin -= offset;
        entry.shape.setOrigin(origin);
        entry.text.setOrigin(origin);

        /* Compute the position of the entry */
        entry.shape.setPosition(this->getPosition());
        entry.text.setPosition(this->getPosition());

        if(this->horizontal) offset.x += this->dimensions.x;
        else offset.y += this->dimensions.y;
    }

    return;
}

void Gui::hide()
{
    this->visible = false;

    return;
}

/* Highlights an entry of the menu */
void Gui::highlight(const int entry)
{
    for(int i = 0; i < entries.size(); ++i)
    {
        if(i == entry) 
        {
            entries[i].shape.setFillColor(style.bodyHighlightCol);
            entries[i].shape.setOutlineColor(style.borderHighlightCol);
            entries[i].text.setColor(style.textHighlightCol);
        }
        else
        {
            entries[i].shape.setFillColor(style.bodyCol);
            entries[i].shape.setOutlineColor(style.borderCol);
            entries[i].text.setColor(style.textCol);
        }
    }

    return;
}

/* Return the message bound to the entry */
std::string Gui::activate(const int entry)
{
    if(entry == -1) return "null";
    return entries[entry].message;
}

std::string Gui::activate(sf::Vector2f mousePos)
{
    int entry = this->getEntry(mousePos);
    return this->activate(entry);
}