spk_nine_slice_background.hpp

#pragma once
 
#include "structure/graphics/painter/spk_texture_painter.hpp"
#include "structure/graphics/spk_extend_2d.hpp"
#include "structure/graphics/spk_sprite_sheet.hpp"
#include "structure/widget/spk_widget.hpp"
 
#include <optional>
 
namespace spk
{
    class NineSliceBackground
    {
    private:
        std::optional<spk::SpriteSheet> _spriteSheet;
        spk::Vector2UInt _cornerSize{8, 8};
        spk::Extend2D _geometry{};
 
        TextureMesh _mesh;
        TexturePainter _painter;
 
        void _validateSpriteSheet(const spk::SpriteSheet &p_spriteSheet) const;
        void _rebuildMesh();
 
    public:
        NineSliceBackground();

        void setTexture(const spk::SpriteSheet *p_spriteSheet);
        const spk::SpriteSheet *texture() const;

        void setCornerSize(const spk::Vector2UInt &p_cornerSize);
        const spk::Vector2UInt &cornerSize() const;

        void setGeometry(const spk::Extend2D &p_geometry);
        const spk::Extend2D &geometry() const;

        void setLayer(const float &p_layer);
        const float &layer() const;

        void render();
    };
}