include/sge/gui/layouts/row.hpp

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#ifndef SGE_GUI_LAYOUTS_ROW_HPP_INCLUDED
#define SGE_GUI_LAYOUTS_ROW_HPP_INCLUDED

#include "../layout.hpp"
#include "../../export.hpp"
#include "../size_policy.hpp"
#include <vector>
#include <cstddef>

namespace sge
{
namespace gui
{
class widget;
namespace layouts
{
class SGE_CLASS_SYMBOL row : public layout
{
    public:
    SGE_SYMBOL row(widgets::container &);
    SGE_SYMBOL void update();
    SGE_SYMBOL dim const size_hint() const;
    private:
    // NOTE: this is actually quite hacky, I first tried to return a reference to
    // the w() or h() component, but then you get const issues which _might_ be
    // resolved somehow virtual dim::size_type master(dim const &) const = 0;
    virtual std::size_t master() const = 0;
    std::size_t slave() const 
    { 
        return master() == static_cast<std::size_t>(0) 
            ? static_cast<std::size_t>(1) 
            : static_cast<std::size_t>(0); 
    }

    void adapt(dim const &,dim const &,axis_policy::type,std::size_t);
    void adapt_outer(dim const &,dim const &,std::size_t);
    void update_widgets(dim const &);
    void reset_cache();
    unsigned count_flags(axis_policy::type,std::size_t) const;

    typedef std::vector<std::pair<widget*,dim> > widget_map;
    //typedef std::map<widget*,dim> widget_map;
    widget_map sizes;
};
}
}
}

#endif

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