Image.hpp

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/*
 * =====================================================================================
 *
 *       Filename:  Image.hpp
 *
 *    Description:
 *
 *        Created:  20/09/2014 16:21:56
 *
 *         Author:  Quentin Bazin, <gnidmoo@gmail.com>
 *
 * =====================================================================================
 */
#ifndef GK_IMAGE_HPP_
#define GK_IMAGE_HPP_

#include "gk/graphics/Color.hpp"
#include "gk/core/Rect.hpp"
#include "gk/gl/IDrawable.hpp"
#include "gk/gl/Transformable.hpp"
#include "gk/gl/VertexBuffer.hpp"

namespace gk {

class Image : public IDrawable, public Transformable {
    public:
        Image() = default;
        Image(const std::string &textureName);
        Image(const Texture &texture);

        void load(const Image &image);
        void load(const std::string &textureName);
        void load(const Texture &texture);

        const FloatRect &clipRect() const { return m_clipRect; }
        void setClipRect(float x, float y, u16 width, u16 height);

        const FloatRect &posRect() const { return m_posRect; }
        void setPosRect(float x, float y, u16 width, u16 height);

        u16 width() const { return m_width * getScale().x; }
        u16 height() const { return m_height * getScale().y; }

        void setColor(const Color &color) { m_color = color; updateVertexBuffer(); }
        void setAlphaMod(u8 alpha) { m_color.a = alpha / 255.0f; updateVertexBuffer(); }
        void setFlip(bool isFlipped) { m_isFlipped = isFlipped; }

    protected:
        void updateVertexBuffer() const;

        void draw(RenderTarget &target, RenderStates states) const override;

        const Texture *m_texture = nullptr;

        VertexBuffer m_vbo;

    private:
        u16 m_width = 0;
        u16 m_height = 0;

        FloatRect m_clipRect;
        FloatRect m_posRect;

        Color m_color;

        bool m_isFlipped = false;
};

} // namespace gk

#endif // GK_IMAGE_HPP_