selectgroup.hpp

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#ifndef __SELECTGROUP__
#define __SELECTGROUP__

#include <tucano/gui/element.hpp>
#include <Eigen/Dense>

namespace Tucano
{

namespace GUI
{

class SelectGroup : public Tucano::GUI::Element {

protected:

    vector < Tucano::GUI::SelectButton* > buttons;

        int selected = -1;

        // position of bottom right corner
        Eigen::Vector2i end_position;

public:

    SelectGroup (void)
    {
        element_type = Tucano::GUI::SELECTGROUP;
        dimensions << 0, 0;
        position << 0, 0;
        end_position << 0, 0;
    }

    void add (SelectButton *el)
    {
        buttons.push_back(el);

                // redimension select group to contain all buttons
                if (el->position[0] < position[0] || buttons.size() == 1)
                        position[0] = el->position[0];
                if (el->position[1] < position[1] || buttons.size() == 1)
                        position[1] = el->position[1];

                if (el->position[0] + el->dimensions[0] > end_position[0])
                        end_position[0] = el->position[0] + el->dimensions[0];
                if (el->position[1] + el->dimensions[1] > end_position[1])
                        end_position[1] = el->position[1] + el->dimensions[1];

                dimensions = end_position - position;
        }

    int getType (void)
    {
        return Tucano::GUI::SELECTGROUP;
    }

        void resetSelection (void)
        {
                if (buttons.empty())
                        return;

            for (unsigned int i = 1; i < buttons.size(); ++i)
                {
                        if (buttons[i]->selected)
                        {
                                buttons[i]->clicked();
                        }
                }
                if (!buttons[0]->selected)
                        buttons[0]->clicked();

                selected = 0;
        }
 
        bool checkClicked (int x, int y)
        {
            for (unsigned int i = 0; i < buttons.size(); ++i)
        {
            if (buttons[i]->isVisible() && buttons[i]->isInside(x, y))
            {
                                if (selected != -1)
                                {
                                        buttons[selected]->clicked();
                                }
                                buttons[i]->clicked();
                                selected = i;
                                return true;
                        }
        }
                return false;
        }

    void render ( Tucano::Camera &camera_2d, Shader &shader )
    {        
                for (unsigned int i = 0; i < buttons.size(); ++i)
        {
            buttons[i]->render(camera_2d, shader);
        }
 
    }    

};
}
}
#endif