Palette.hh

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#ifndef __NCPP_PALETTE_HH
#define __NCPP_PALETTE_HH
 
#include "Root.hh"
#include "_helpers.hh"
 
namespace ncpp
{
    class NotCurses;
 
    class NCPP_API_EXPORT Palette : public Root
    {
    public:
        Palette (NotCurses *ncinst = nullptr)
            : Root (ncinst)
        {
            palette = ncpalette_new (get_notcurses ());
            if (palette == nullptr)
                throw init_error ("Notcurses failed to create a new palette");
        }
 
        ~Palette ()
        {
            ncpalette_free (palette);
        }
 
        operator ncpalette* () noexcept
        {
            return palette;
        }
 
        operator ncpalette const* () const noexcept
        {
            return palette;
        }
 
        bool set (int idx, int r, int g, int b) const NOEXCEPT_MAYBE
        {
            return error_guard (ncpalette_set_rgb8 (palette, idx, r, g, b), -1);
        }
 
        bool set (int idx, unsigned rgb) const NOEXCEPT_MAYBE
        {
            return error_guard (ncpalette_set (palette, idx, rgb), -1);
        }
 
        bool get (int idx, unsigned *r, unsigned *g, unsigned *b) const
        {
            if (r == nullptr)
                throw invalid_argument ("'r' must be a valid pointer");
            if (g == nullptr)
                throw invalid_argument ("'g' must be a valid pointer");
            if (b == nullptr)
                throw invalid_argument ("'b' must be a valid pointer");
 
            return get (idx, *r, *g, *b);
        }
 
        bool get (int idx, unsigned &r, unsigned &g, unsigned &b) const NOEXCEPT_MAYBE
        {
            return error_guard (ncpalette_get_rgb8 (palette, idx, &r, &g, &b), -1);
        }
 
    private:
        ncpalette *palette;
    };
}
#endif